/* roulang page: index */
:root {
            --color-primary: #1A1D1C;
            --color-accent: #C6F24E;
            --color-highlight: #D08C3C;
            --color-bg: #F7F5F0;
            --color-card: #FFFFFF;
            --color-border: #E8E5DE;
            --color-text: #4A4F4D;
            --color-heading: #111413;
            --color-dark-text: #F7F5F0;
            --color-dark-border: rgba(255, 255, 255, 0.14);
            --radius-card: 12px;
            --radius-btn: 8px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-card-hover: 0 12px 28px rgba(0, 0, 0, 0.10);
            --transition: 0.2s ease;
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --max-width: 1200px;
            --section-spacing: 96px;
            --section-spacing-mobile: 56px;
            --gutter: 24px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.9;
            color: var(--color-text);
            background-color: var(--color-bg);
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }

        a:hover {
            color: var(--color-accent);
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            max-width: var(--max-width);
            padding-left: var(--gutter);
            padding-right: var(--gutter);
        }

        @media (min-width: 1400px) {
            .container {
                max-width: 1280px;
            }
        }

        section {
            padding: var(--section-spacing) 0;
            position: relative;
        }

        @media (max-width: 767px) {
            section {
                padding: var(--section-spacing-mobile) 0;
            }
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--color-heading);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 0.75rem;
        }

        h1 {
            font-size: 48px;
            font-weight: 800;
        }

        h2 {
            font-size: 36px;
            font-weight: 700;
        }

        h3 {
            font-size: 24px;
            font-weight: 600;
        }

        p {
            margin-bottom: 1rem;
        }

        @media (max-width: 991px) {
            h1 {
                font-size: 38px;
            }
            h2 {
                font-size: 30px;
            }
            h3 {
                font-size: 22px;
            }
        }

        @media (max-width: 575px) {
            h1 {
                font-size: 32px;
            }
            h2 {
                font-size: 26px;
            }
            h3 {
                font-size: 20px;
            }
            body {
                font-size: 15px;
            }
        }

        .section-label {
            display: inline-block;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--color-highlight);
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 16px;
        }

        .section-desc {
            font-size: 17px;
            color: var(--color-text);
            max-width: 720px;
            line-height: 1.9;
        }

        @media (max-width: 991px) {
            .section-title {
                font-size: 30px;
            }
        }

        @media (max-width: 575px) {
            .section-title {
                font-size: 26px;
            }
            .section-desc {
                font-size: 15px;
            }
        }

        .btn {
            border-radius: var(--radius-btn);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 16px;
            transition: all var(--transition);
            border: 1px solid transparent;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn:focus,
        .btn:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            box-shadow: none;
        }

        .btn-primary-custom {
            background-color: var(--color-primary);
            color: #fff;
            border: 1px solid var(--color-primary);
        }

        .btn-primary-custom:hover {
            background-color: var(--color-accent);
            color: var(--color-primary);
            border-color: var(--color-accent);
            transform: translateY(-2px);
        }

        .btn-accent {
            background-color: var(--color-accent);
            color: var(--color-primary);
            border: 1px solid var(--color-accent);
        }

        .btn-accent:hover {
            background-color: var(--color-highlight);
            color: #fff;
            border-color: var(--color-highlight);
            transform: translateY(-2px);
        }

        .btn-outline-dark {
            background-color: transparent;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }

        .btn-outline-dark:hover {
            background-color: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            transform: translateY(-2px);
        }

        .btn-outline-light {
            background-color: transparent;
            color: var(--color-dark-text);
            border: 1px solid rgba(255, 255, 255, 0.5);
        }

        .btn-outline-light:hover {
            background-color: rgba(255, 255, 255, 0.12);
            color: var(--color-accent);
            border-color: var(--color-accent);
            transform: translateY(-2px);
        }

        .btn-read-more {
            background: none;
            border: none;
            padding: 0;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border-bottom: 2px solid var(--color-accent);
            border-radius: 0;
            padding-bottom: 2px;
            transition: all var(--transition);
        }

        .btn-read-more:hover {
            color: var(--color-highlight);
            border-bottom-color: var(--color-highlight);
            transform: translateX(4px);
        }

        .btn-read-more i {
            font-size: 13px;
            transition: transform var(--transition);
        }

        .btn-read-more:hover i {
            transform: translateX(3px);
        }

        /* Header / Navigation */
        .site-header {
            background-color: #fff;
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 1040;
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
        }

        .navbar {
            padding: 14px 0;
            background: transparent;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 22px;
            color: var(--color-primary);
            letter-spacing: 0.02em;
        }

        .navbar-brand:hover {
            color: var(--color-primary);
        }

        .brand-icon {
            width: 40px;
            height: 40px;
            background-color: var(--color-primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--color-accent);
            font-weight: 900;
            flex-shrink: 0;
        }

        .navbar-nav {
            gap: 4px;
        }

        .navbar-nav .nav-link {
            color: var(--color-text);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 6px;
            position: relative;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .navbar-nav .nav-link:hover {
            color: var(--color-primary);
            background-color: var(--color-bg);
        }

        .navbar-nav .nav-link.active {
            color: var(--color-primary);
            font-weight: 700;
            background-color: transparent;
        }

        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 14px;
            right: 14px;
            height: 3px;
            background-color: var(--color-accent);
            border-radius: 2px;
        }

        .navbar-nav .nav-link.active:hover {
            background-color: transparent;
        }

        .header-cta {
            margin-left: 12px;
            white-space: nowrap;
        }

        @media (max-width: 991px) {
            .navbar-collapse {
                background: #fff;
                border-radius: var(--radius-card);
                padding: 16px 20px;
                margin-top: 10px;
                box-shadow: var(--shadow-card-hover);
                max-height: calc(100vh - 80px);
                overflow-y: auto;
            }
            .navbar-nav .nav-link {
                padding: 10px 12px;
                font-size: 16px;
            }
            .navbar-nav .nav-link.active::after {
                left: 12px;
                right: auto;
                width: 4px;
                height: 100%;
                bottom: 0;
                top: 0;
                border-radius: 0 2px 2px 0;
            }
            .header-cta {
                margin-left: 0;
                margin-top: 10px;
            }
            .navbar-toggler {
                border: 1px solid var(--color-border);
                border-radius: 8px;
                padding: 8px 10px;
            }
            .navbar-toggler:focus {
                box-shadow: 0 0 0 2px var(--color-accent);
                outline: none;
            }
        }

        /* Hero - 矮横幅 */
        .hero-section {
            padding: 0;
            position: relative;
            background-color: var(--color-primary);
            min-height: 62vh;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 29, 28, 0.88) 0%, rgba(26, 29, 28, 0.62) 60%, rgba(26, 29, 28, 0.45) 100%);
            z-index: 1;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            z-index: 0;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            color: var(--color-dark-text);
            padding: 60px 0 50px;
            display: flex;
            align-items: center;
            min-height: 62vh;
        }

        .hero-text-wrap {
            max-width: 620px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(198, 242, 78, 0.14);
            border: 1px solid rgba(198, 242, 78, 0.35);
            color: var(--color-accent);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            letter-spacing: 0.04em;
            margin-bottom: 20px;
        }

        .hero-badge i {
            font-size: 12px;
        }

        .hero-title {
            color: #fff;
            font-size: 48px;
            font-weight: 800;
            margin-bottom: 18px;
            line-height: 1.25;
        }

        .hero-title span {
            color: var(--color-accent);
        }

        .hero-subtitle {
            font-size: 18px;
            color: rgba(247, 245, 240, 0.82);
            line-height: 1.85;
            margin-bottom: 28px;
            max-width: 560px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 32px;
        }

        .hero-stats {
            display: flex;
            gap: 36px;
            flex-wrap: wrap;
        }

        .hero-stat {
            display: flex;
            flex-direction: column;
        }

        .hero-stat-num {
            font-size: 32px;
            font-weight: 800;
            color: var(--color-accent);
            line-height: 1.2;
        }

        .hero-stat-label {
            font-size: 13px;
            color: rgba(247, 245, 240, 0.7);
            letter-spacing: 0.03em;
        }

        @media (max-width: 991px) {
            .hero-section,
            .hero-content {
                min-height: auto;
            }
            .hero-content {
                padding: 48px 0 40px;
            }
            .hero-title {
                font-size: 36px;
            }
            .hero-subtitle {
                font-size: 16px;
            }
            .hero-stat-num {
                font-size: 26px;
            }
        }

        @media (max-width: 575px) {
            .hero-content {
                padding: 36px 0 32px;
            }
            .hero-title {
                font-size: 28px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-actions {
                flex-direction: column;
                gap: 10px;
            }
            .hero-stats {
                gap: 20px;
            }
            .hero-stat-num {
                font-size: 22px;
            }
        }

        /* Cards */
        .content-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            overflow: hidden;
        }

        .content-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(198, 242, 78, 0.4);
            transform: translateY(-3px);
        }

        .card-img-wrap {
            border-radius: var(--radius-card) var(--radius-card) 0 0;
            overflow: hidden;
            position: relative;
            aspect-ratio: 16 / 9;
        }

        .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .content-card:hover .card-img-wrap img {
            transform: scale(1.04);
        }

        .card-body-content {
            padding: 20px 22px;
        }

        .card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.04em;
            color: var(--color-highlight);
            background: rgba(208, 140, 60, 0.1);
            border: 1px solid rgba(208, 140, 60, 0.25);
            padding: 3px 10px;
            border-radius: 4px;
            margin-bottom: 8px;
        }

        .card-title {
            font-size: 19px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 8px;
            line-height: 1.45;
        }

        .card-text {
            font-size: 15px;
            color: var(--color-text);
            line-height: 1.75;
            margin-bottom: 12px;
        }

        .card-meta {
            font-size: 13px;
            color: #8a8f8d;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        /* Feature groups */
        .feature-group {
            display: flex;
            align-items: center;
            gap: 48px;
            margin-bottom: 72px;
        }

        .feature-group:last-child {
            margin-bottom: 0;
        }

        .feature-group.reverse {
            flex-direction: row-reverse;
        }

        .feature-text {
            flex: 1;
        }

        .feature-visual {
            flex: 1;
            border-radius: var(--radius-card);
            overflow: hidden;
            position: relative;
            aspect-ratio: 4 / 3;
            box-shadow: var(--shadow-card);
        }

        .feature-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .feature-group:hover .feature-visual img {
            transform: scale(1.03);
        }

        .feature-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 16px;
        }

        .feature-body {
            font-size: 16px;
            color: var(--color-text);
            line-height: 1.9;
            margin-bottom: 16px;
        }

        .feature-list {
            list-style: none;
            padding: 0;
            margin: 0 0 18px;
        }

        .feature-list li {
            padding-left: 26px;
            position: relative;
            margin-bottom: 10px;
            font-size: 15px;
            color: var(--color-text);
            line-height: 1.7;
        }

        .feature-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 10px;
            width: 10px;
            height: 10px;
            background-color: var(--color-accent);
            border-radius: 2px;
        }

        @media (max-width: 991px) {
            .feature-group,
            .feature-group.reverse {
                flex-direction: column;
                gap: 28px;
                margin-bottom: 48px;
            }
            .feature-visual {
                width: 100%;
                aspect-ratio: 16 / 9;
            }
        }

        /* Scene section */
        .scene-section {
            background-color: var(--color-primary);
            color: var(--color-dark-text);
            position: relative;
            overflow: hidden;
        }

        .scene-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            z-index: 0;
        }

        .scene-section .container {
            position: relative;
            z-index: 1;
        }

        .scene-section .section-title {
            color: #fff;
        }

        .scene-section .section-desc {
            color: rgba(247, 245, 240, 0.8);
        }

        .scene-block {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--color-dark-border);
            border-radius: var(--radius-card);
            padding: 32px 36px;
            margin-bottom: 28px;
            transition: all var(--transition);
        }

        .scene-block:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(198, 242, 78, 0.4);
        }

        .scene-step {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 700;
            color: var(--color-accent);
            letter-spacing: 0.05em;
            margin-bottom: 12px;
        }

        .scene-title {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .scene-text {
            font-size: 16px;
            color: rgba(247, 245, 240, 0.8);
            line-height: 1.85;
            margin-bottom: 0;
        }

        /* Case studies */
        .case-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            border-left: 4px solid var(--color-accent);
            box-shadow: var(--shadow-card);
            padding: 28px 32px;
            transition: all var(--transition);
            height: 100%;
        }

        .case-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-left-color: var(--color-highlight);
            border-right-color: rgba(198, 242, 78, 0.4);
            border-top-color: rgba(198, 242, 78, 0.4);
            border-bottom-color: rgba(198, 242, 78, 0.4);
            transform: translateY(-3px);
        }

        .case-metric {
            font-size: 36px;
            font-weight: 800;
            color: var(--color-highlight);
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .case-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 10px;
        }

        .case-body {
            font-size: 15px;
            color: var(--color-text);
            line-height: 1.8;
            margin-bottom: 10px;
        }

        .case-quote {
            font-size: 14px;
            color: #6b706e;
            font-style: italic;
            border-left: 2px solid var(--color-accent);
            padding-left: 14px;
            margin-bottom: 0;
        }

        /* Pricing */
        .pricing-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            padding: 32px 28px;
            position: relative;
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .pricing-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .pricing-card.featured {
            background-color: var(--color-primary);
            border-color: var(--color-primary);
            color: var(--color-dark-text);
            box-shadow: 0 8px 30px rgba(26, 29, 28, 0.25);
            transform: scale(1.02);
        }

        .pricing-card.featured:hover {
            transform: scale(1.02) translateY(-3px);
        }

        .pricing-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.05em;
            color: var(--color-highlight);
            background: rgba(208, 140, 60, 0.12);
            border: 1px solid rgba(208, 140, 60, 0.3);
            padding: 4px 12px;
            border-radius: 4px;
            margin-bottom: 14px;
            align-self: flex-start;
        }

        .pricing-card.featured .pricing-tag {
            background: rgba(198, 242, 78, 0.16);
            border-color: rgba(198, 242, 78, 0.4);
            color: var(--color-accent);
        }

        .pricing-name {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 6px;
        }

        .pricing-card.featured .pricing-name {
            color: #fff;
        }

        .pricing-price {
            font-size: 42px;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1.1;
            margin-bottom: 4px;
        }

        .pricing-card.featured .pricing-price {
            color: var(--color-accent);
        }

        .pricing-price small {
            font-size: 16px;
            font-weight: 500;
            color: #8a8f8d;
        }

        .pricing-desc {
            font-size: 14px;
            color: var(--color-text);
            margin-bottom: 18px;
        }

        .pricing-card.featured .pricing-desc {
            color: rgba(247, 245, 240, 0.75);
        }

        .pricing-features {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
            flex-grow: 1;
        }

        .pricing-features li {
            padding-left: 26px;
            position: relative;
            margin-bottom: 10px;
            font-size: 14px;
            color: var(--color-text);
            line-height: 1.6;
        }

        .pricing-features li::before {
            content: '\f00c';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 2px;
            font-size: 13px;
            color: var(--color-accent);
        }

        .pricing-card.featured .pricing-features li {
            color: rgba(247, 245, 240, 0.85);
        }

        .pricing-card.featured .pricing-features li::before {
            color: var(--color-accent);
        }

        /* Hot recommendations */
        .hot-big-card {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            aspect-ratio: 16 / 9;
            cursor: pointer;
            display: block;
        }

        .hot-big-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .hot-big-card:hover img {
            transform: scale(1.04);
        }

        .hot-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(26, 29, 28, 0.15) 0%, rgba(26, 29, 28, 0.85) 100%);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 24px 28px;
            transition: background var(--transition);
        }

        .hot-big-card:hover .hot-overlay {
            background: linear-gradient(180deg, rgba(26, 29, 28, 0.1) 0%, rgba(26, 29, 28, 0.92) 100%);
        }

        .hot-tag {
            display: inline-block;
            background: var(--color-accent);
            color: var(--color-primary);
            font-size: 12px;
            font-weight: 800;
            padding: 4px 10px;
            border-radius: 4px;
            letter-spacing: 0.04em;
            margin-bottom: 8px;
            align-self: flex-start;
        }

        .hot-title {
            color: #fff;
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .hot-desc {
            color: rgba(247, 245, 240, 0.75);
            font-size: 14px;
            margin-bottom: 0;
        }

        .hot-small-card {
            display: flex;
            gap: 14px;
            background: var(--color-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            padding: 14px 16px;
            transition: all var(--transition);
            cursor: pointer;
            margin-bottom: 14px;
        }

        .hot-small-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(198, 242, 78, 0.4);
            transform: translateX(4px);
        }

        .hot-small-thumb {
            width: 100px;
            height: 68px;
            border-radius: 8px;
            overflow: hidden;
            flex-shrink: 0;
        }

        .hot-small-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .hot-small-content {
            flex: 1;
        }

        .hot-small-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-heading);
            margin-bottom: 4px;
            line-height: 1.4;
        }

        .hot-small-meta {
            font-size: 12px;
            color: #8a8f8d;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        /* Vertical cards */
        .vertical-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: all var(--transition);
            cursor: pointer;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .vertical-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: rgba(198, 242, 78, 0.4);
        }

        .vertical-img {
            aspect-ratio: 3 / 4;
            overflow: hidden;
            position: relative;
        }

        .vertical-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .vertical-card:hover .vertical-img img {
            transform: scale(1.05);
        }

        .vertical-body {
            padding: 16px 18px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .vertical-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-heading);
            margin-bottom: 6px;
            line-height: 1.45;
        }

        .vertical-desc {
            font-size: 13px;
            color: var(--color-text);
            line-height: 1.6;
            margin-bottom: 10px;
            flex-grow: 1;
        }

        .vertical-cta {
            font-size: 13px;
            font-weight: 700;
            color: var(--color-highlight);
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        /* News list */
        .news-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 18px 0;
            border-bottom: 1px solid var(--color-border);
            transition: all var(--transition);
            cursor: pointer;
        }

        .news-item:hover {
            background-color: var(--color-bg);
            border-bottom-color: rgba(198, 242, 78, 0.5);
            padding-left: 8px;
        }

        .news-date {
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: 8px;
            padding: 10px 14px;
            text-align: center;
            min-width: 72px;
            flex-shrink: 0;
        }

        .news-date-month {
            font-size: 12px;
            font-weight: 600;
            color: var(--color-highlight);
            display: block;
            letter-spacing: 0.05em;
        }

        .news-date-day {
            font-size: 22px;
            font-weight: 800;
            color: var(--color-primary);
            display: block;
            line-height: 1.2;
        }

        .news-content {
            flex: 1;
        }

        .news-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-heading);
            margin-bottom: 4px;
            line-height: 1.5;
        }

        .news-excerpt {
            font-size: 14px;
            color: var(--color-text);
            margin-bottom: 0;
            line-height: 1.7;
        }

        .news-action {
            flex-shrink: 0;
        }

        @media (max-width: 767px) {
            .news-item {
                flex-wrap: wrap;
                gap: 12px;
            }
            .news-action {
                width: 100%;
                text-align: right;
            }
        }

        /* Brand intro */
        .brand-intro-wrap {
            display: flex;
            gap: 48px;
            align-items: center;
        }

        .brand-intro-text {
            flex: 1;
        }

        .brand-intro-visual {
            flex: 1;
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--color-border);
            aspect-ratio: 4 / 3;
            box-shadow: var(--shadow-card);
        }

        .brand-intro-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        @media (max-width: 991px) {
            .brand-intro-wrap {
                flex-direction: column;
                gap: 28px;
            }
            .brand-intro-visual {
                width: 100%;
                aspect-ratio: 16 / 9;
            }
        }

        /* FAQ */
        .accordion-custom .accordion-item {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
        }

        .accordion-custom .accordion-item:focus-within {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 2px rgba(198, 242, 78, 0.3);
        }

        .accordion-custom .accordion-button {
            background: transparent;
            border: none;
            box-shadow: none;
            padding: 18px 22px;
            font-size: 17px;
            font-weight: 600;
            color: var(--color-heading);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            width: 100%;
            text-align: left;
            transition: color var(--transition);
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            color: var(--color-primary);
            background: transparent;
            box-shadow: none;
        }

        .accordion-custom .accordion-button:focus {
            box-shadow: none;
            outline: none;
        }

        .accordion-custom .accordion-button::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 14px;
            color: var(--color-text);
            transition: transform var(--transition);
            background-image: none;
        }

        .accordion-custom .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: var(--color-highlight);
        }

        .accordion-custom .accordion-body {
            padding: 0 22px 18px;
            font-size: 15px;
            color: var(--color-text);
            line-height: 1.8;
        }

        /* CTA section */
        .cta-section {
            background-color: var(--color-primary);
            color: var(--color-dark-text);
            position: relative;
            overflow: hidden;
            padding: 60px 0;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 29, 28, 0.95) 0%, rgba(26, 29, 28, 0.8) 100%);
            z-index: 0;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }

        .cta-title {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

        .cta-desc {
            font-size: 17px;
            color: rgba(247, 245, 240, 0.8);
            max-width: 560px;
            margin: 0 auto 26px;
            line-height: 1.8;
        }

        /* Footer */
        .site-footer {
            background-color: #111413;
            color: rgba(247, 245, 240, 0.75);
            padding-top: 60px;
            padding-bottom: 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand-title {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-brand-desc {
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 16px;
            max-width: 320px;
        }

        .footer-heading {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 8px;
        }

        .footer-links a {
            color: rgba(247, 245, 240, 0.65);
            font-size: 14px;
            transition: color var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-links a:hover {
            color: var(--color-accent);
        }

        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
            font-size: 14px;
        }

        .footer-contact li {
            margin-bottom: 10px;
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: rgba(247, 245, 240, 0.65);
        }

        .footer-contact i {
            color: var(--color-accent);
            margin-top: 4px;
            font-size: 14px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            margin-top: 40px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: rgba(247, 245, 240, 0.55);
        }

        .footer-bottom a {
            color: rgba(247, 245, 240, 0.55);
        }

        .footer-bottom a:hover {
            color: var(--color-accent);
        }

        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        @media (max-width: 767px) {
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .footer-bottom-links {
                justify-content: center;
            }
        }

        /* Animations */
        .fade-up {
            opacity: 0;
            transform: translateY(12px);
            transition: opacity 0.3s ease, transform 0.3s ease;
        }

        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }
            .fade-up {
                opacity: 1;
                transform: none;
            }
        }

        /* Utility */
        .text-accent {
            color: var(--color-accent);
        }

        .text-highlight {
            color: var(--color-highlight);
        }

        .bg-primary-custom {
            background-color: var(--color-primary);
        }

        .divider {
            height: 1px;
            background-color: var(--color-border);
            border: none;
            margin: 0;
        }

        .divider-light {
            height: 1px;
            background-color: var(--color-dark-border);
            border: none;
            margin: 0;
        }

        .mb-section {
            margin-bottom: 40px;
        }

        .gap-24 {
            gap: 24px;
        }

        /* Section header pattern */
        .section-header {
            margin-bottom: 40px;
        }

        .section-header .section-desc {
            margin-top: 0;
        }

        @media (max-width: 767px) {
            .section-header {
                margin-bottom: 28px;
            }
        }

/* roulang page: category1 */
:root {
      --color-primary: #1A1D1C;
      --color-accent: #C6F24E;
      --color-highlight: #D08C3C;
      --color-bg: #F7F5F0;
      --color-card: #FFFFFF;
      --color-border: #E8E5DE;
      --color-text: #4A4F4D;
      --color-heading: #111413;
      --color-dark-text: #F7F5F0;
      --color-dark-border: rgba(255, 255, 255, 0.14);
      --radius-card: 12px;
      --radius-btn: 8px;
      --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.04);
      --shadow-card-hover: 0 12px 28px rgba(0, 0, 0, 0.10);
      --transition: 0.2s ease;
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
      --max-width: 1200px;
      --section-spacing: 96px;
      --section-spacing-mobile: 56px;
      --gutter: 24px;
    }
    html {
      scroll-behavior: smooth;
      -webkit-text-size-adjust: 100%;
    }
    body {
      font-family: var(--font-stack);
      font-size: 16px;
      line-height: 1.9;
      color: var(--color-text);
      background-color: var(--color-bg);
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
      border-radius: var(--radius-card);
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: color var(--transition);
    }
    a:hover {
      color: var(--color-accent);
    }
    button {
      font-family: inherit;
      cursor: pointer;
      border: none;
      background: none;
    }
    .container {
      max-width: 1280px;
      padding-left: var(--gutter);
      padding-right: var(--gutter);
    }
    section {
      padding: var(--section-spacing) 0;
      position: relative;
    }
    @media (max-width: 991.98px) {
      section {
        padding: var(--section-spacing-mobile) 0;
      }
      body {
        font-size: 15px;
      }
    }
    .section-label {
      display: inline-block;
      font-size: 14px;
      font-weight: 600;
      letter-spacing: 0.06em;
      color: var(--color-highlight);
      text-transform: uppercase;
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 36px;
      font-weight: 700;
      color: var(--color-heading);
      margin-bottom: 16px;
    }
    .section-desc {
      font-size: 17px;
      color: var(--color-text);
      max-width: 720px;
      line-height: 1.9;
    }
    @media (max-width: 575.98px) {
      .section-title {
        font-size: 26px;
      }
      .section-desc {
        font-size: 15px;
      }
    }
    .btn {
      border-radius: var(--radius-btn);
      padding: 12px 28px;
      font-weight: 600;
      font-size: 16px;
      transition: all var(--transition);
      border: 1px solid transparent;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .btn:focus,
    .btn:focus-visible {
      outline: 2px solid var(--color-accent);
      outline-offset: 3px;
      box-shadow: none;
    }
    .btn-primary-custom {
      background-color: var(--color-primary);
      color: #fff;
      border: 1px solid var(--color-primary);
    }
    .btn-primary-custom:hover {
      background-color: var(--color-accent);
      color: var(--color-primary);
      border-color: var(--color-accent);
      transform: translateY(-2px);
    }
    .btn-accent {
      background-color: var(--color-accent);
      color: var(--color-primary);
      border: 1px solid var(--color-accent);
    }
    .btn-accent:hover {
      background-color: var(--color-highlight);
      color: #fff;
      border-color: var(--color-highlight);
      transform: translateY(-2px);
    }
    .btn-outline-dark {
      background-color: transparent;
      color: var(--color-primary);
      border: 1px solid var(--color-primary);
    }
    .btn-outline-dark:hover {
      background-color: var(--color-primary);
      color: #fff;
      border-color: var(--color-primary);
      transform: translateY(-2px);
    }
    .btn-outline-light {
      background-color: transparent;
      color: var(--color-dark-text);
      border: 1px solid rgba(255, 255, 255, 0.5);
    }
    .btn-outline-light:hover {
      background-color: rgba(255, 255, 255, 0.12);
      color: var(--color-accent);
      border-color: var(--color-accent);
      transform: translateY(-2px);
    }
    .btn-read-more {
      background: none;
      border: none;
      padding: 0;
      font-size: 15px;
      font-weight: 600;
      color: var(--color-primary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      border-bottom: 2px solid var(--color-accent);
      border-radius: 0;
      padding-bottom: 2px;
      transition: all var(--transition);
    }
    .btn-read-more:hover {
      color: var(--color-highlight);
      border-bottom-color: var(--color-highlight);
      transform: translateX(4px);
    }
    .btn-read-more i {
      font-size: 13px;
      transition: transform var(--transition);
    }
    .btn-read-more:hover i {
      transform: translateX(3px);
    }
    /* Header / Navigation */
    .site-header {
      background-color: #fff;
      border-bottom: 1px solid var(--color-border);
      position: sticky;
      top: 0;
      z-index: 1030;
      transition: box-shadow var(--transition);
    }
    .site-header.scrolled {
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    }
    .navbar {
      padding: 0.75rem 0;
    }
    .navbar-brand {
      font-weight: 700;
      font-size: 1.5rem;
      color: var(--color-primary);
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .navbar-brand:hover {
      color: var(--color-primary);
    }
    .brand-icon {
      width: 36px;
      height: 36px;
      background: var(--color-primary);
      color: var(--color-accent);
      border-radius: 8px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 18px;
    }
    .navbar-nav .nav-link {
      color: var(--color-text);
      font-weight: 600;
      font-size: 16px;
      padding: 0.5rem 1rem;
      position: relative;
      transition: color var(--transition);
    }
    .navbar-nav .nav-link:hover,
    .navbar-nav .nav-link.active {
      color: var(--color-primary);
    }
    .navbar-nav .nav-link.active::after {
      content: '';
      position: absolute;
      left: 1rem;
      right: 1rem;
      bottom: 0;
      height: 2px;
      background-color: var(--color-accent);
    }
    .header-cta {
      background-color: var(--color-accent);
      color: var(--color-primary);
      border: 1px solid var(--color-accent);
      border-radius: var(--radius-btn);
      padding: 0.5rem 1.5rem;
      font-weight: 600;
    }
    .header-cta:hover {
      background-color: var(--color-highlight);
      color: #fff;
      border-color: var(--color-highlight);
      transform: translateY(-2px);
    }
    .navbar-toggler {
      border: none;
      padding: 0;
      font-size: 1.5rem;
    }
    .navbar-toggler:focus {
      box-shadow: none;
    }
    @media (max-width: 991.98px) {
      .navbar-collapse {
        background: #fff;
        padding: 1rem;
        border-radius: 0 0 12px 12px;
        box-shadow: 0 8px 20px rgba(0,0,0,0.08);
        margin-top: 0.5rem;
      }
      .navbar-nav .nav-link {
        padding: 0.75rem 1rem;
      }
      .header-cta {
        margin-top: 0.5rem;
        display: inline-block;
      }
    }
    /* Breadcrumb */
    .breadcrumb-section {
      padding: 2rem 0 0;
      background: transparent;
    }
    .breadcrumb {
      margin: 0;
      padding: 0;
      background: transparent;
      font-size: 14px;
      color: var(--color-text);
    }
    .breadcrumb-item a {
      color: var(--color-text);
    }
    .breadcrumb-item a:hover {
      color: var(--color-accent);
    }
    .breadcrumb-item.active {
      color: var(--color-primary);
      font-weight: 600;
    }
    /* Hero */
    .hero-category {
      position: relative;
      padding: 4rem 0 5rem;
      background: linear-gradient(135deg, rgba(26,29,28,0.88), rgba(26,29,28,0.65)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      color: var(--color-dark-text);
      overflow: hidden;
    }
    .hero-category::after {
      content: '';
      position: absolute;
      bottom: -1px;
      left: 0;
      right: 0;
      height: 80px;
      background: var(--color-bg);
      clip-path: polygon(0 100%, 100% 0, 100% 100%);
    }
    .hero-category .container {
      position: relative;
      z-index: 2;
    }
    .hero-category h1 {
      font-size: 48px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 1rem;
    }
    .hero-category .lead {
      font-size: 19px;
      color: rgba(255,255,255,0.9);
      max-width: 700px;
      line-height: 1.9;
    }
    .hero-cta-group {
      margin-top: 2rem;
      display: flex;
      gap: 1rem;
      flex-wrap: wrap;
    }
    .hero-stats {
      margin-top: 3rem;
      display: flex;
      gap: 2rem;
      flex-wrap: wrap;
    }
    .stat-item {
      flex: 1;
      min-width: 150px;
    }
    .stat-number {
      font-size: 32px;
      font-weight: 700;
      color: var(--color-accent);
      line-height: 1.2;
    }
    .stat-label {
      font-size: 15px;
      color: rgba(255,255,255,0.7);
    }
    @media (max-width: 575.98px) {
      .hero-category h1 {
        font-size: 32px;
      }
      .hero-category .lead {
        font-size: 16px;
      }
      .hero-stats {
        gap: 1rem;
      }
    }
    /* Feature highlights */
    .feature-highlights {
      background: var(--color-bg);
    }
    .feature-item {
      display: flex;
      gap: 1rem;
      align-items: flex-start;
      padding: 1rem 0;
    }
    .feature-icon {
      width: 48px;
      height: 48px;
      background: var(--color-card);
      border: 1px solid var(--color-border);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--color-accent);
      font-size: 1.3rem;
      flex-shrink: 0;
      box-shadow: var(--shadow-card);
    }
    .feature-text h3 {
      font-size: 20px;
      font-weight: 600;
      color: var(--color-heading);
      margin-bottom: 0.25rem;
    }
    .feature-text p {
      font-size: 15px;
      color: var(--color-text);
      margin-bottom: 0;
    }
    /* Main content: standard double column */
    .content-section {
      background: var(--color-bg);
      padding-top: 2rem;
      padding-bottom: var(--section-spacing);
    }
    .list-card {
      display: flex;
      flex-direction: row;
      background: var(--color-card);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      transition: box-shadow var(--transition), transform var(--transition);
      margin-bottom: 1.5rem;
    }
    .list-card:hover {
      box-shadow: var(--shadow-card-hover);
      transform: translateY(-3px);
    }
    .list-card-img {
      width: 35%;
      min-height: 180px;
      object-fit: cover;
      flex-shrink: 0;
    }
    .list-card-body {
      padding: 1.5rem 1.75rem;
      flex: 1;
    }
    .list-card-meta {
      display: flex;
      align-items: center;
      gap: 1rem;
      font-size: 14px;
      color: var(--color-highlight);
      margin-bottom: 0.5rem;
    }
    .list-card-meta .badge-tag {
      background: rgba(198,242,78,0.15);
      color: var(--color-primary);
      font-weight: 600;
      padding: 0.2rem 0.8rem;
      border-radius: 20px;
      font-size: 12px;
    }
    .list-card-title {
      font-size: 20px;
      font-weight: 700;
      color: var(--color-heading);
      margin-bottom: 0.75rem;
    }
    .list-card-desc {
      font-size: 15px;
      color: var(--color-text);
      margin-bottom: 1rem;
    }
    @media (max-width: 767.98px) {
      .list-card {
        flex-direction: column;
      }
      .list-card-img {
        width: 100%;
        height: 180px;
      }
    }
    /* Sidebar */
    .sidebar-card {
      background: var(--color-card);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      padding: 1.5rem;
      box-shadow: var(--shadow-card);
      margin-bottom: 1.5rem;
    }
    .sidebar-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--color-heading);
      margin-bottom: 1rem;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .sidebar-title i {
      color: var(--color-accent);
    }
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 0.5rem;
    }
    .tag-cloud a {
      background: var(--color-bg);
      border: 1px solid var(--color-border);
      border-radius: 20px;
      padding: 0.25rem 0.9rem;
      font-size: 13px;
      color: var(--color-text);
      transition: all var(--transition);
    }
    .tag-cloud a:hover {
      background: var(--color-accent);
      color: var(--color-primary);
      border-color: var(--color-accent);
    }
    .subscribe-form input {
      width: 100%;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-btn);
      padding: 0.7rem 1rem;
      font-size: 15px;
      background: var(--color-bg);
      color: var(--color-primary);
      transition: border-color var(--transition);
    }
    .subscribe-form input:focus {
      outline: none;
      border-color: var(--color-accent);
      box-shadow: 0 0 0 3px rgba(198,242,78,0.2);
    }
    .subscribe-form button {
      margin-top: 0.75rem;
      width: 100%;
    }
    /* FAQ */
    .accordion-item {
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      margin-bottom: 0.75rem;
      background: var(--color-card);
      overflow: hidden;
    }
    .accordion-header {
      margin: 0;
    }
    .accordion-button {
      background: var(--color-card);
      color: var(--color-heading);
      font-weight: 600;
      font-size: 18px;
      padding: 1.25rem 1.5rem;
      border: none;
      box-shadow: none;
    }
    .accordion-button:not(.collapsed) {
      background: var(--color-card);
      color: var(--color-primary);
      box-shadow: none;
      border-bottom: 1px solid var(--color-border);
    }
    .accordion-button:focus {
      box-shadow: none;
      border-color: var(--color-accent);
    }
    .accordion-button::after {
      background-size: 1.2rem;
      transition: transform 0.2s ease;
    }
    .accordion-body {
      padding: 1.25rem 1.5rem;
      font-size: 15px;
      color: var(--color-text);
    }
    /* CTA area */
    .cta-section {
      background: var(--color-primary);
      color: var(--color-dark-text);
    }
    .cta-section h2 {
      font-size: 32px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 1rem;
    }
    .cta-section p {
      font-size: 17px;
      color: rgba(255,255,255,0.85);
      max-width: 700px;
      margin-bottom: 2rem;
    }
    /* Footer */
    .site-footer {
      background: var(--color-primary);
      color: var(--color-dark-text);
      padding: 4rem 0 2rem;
      font-size: 15px;
    }
    .footer-brand-title {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.5rem;
      font-weight: 700;
      margin-bottom: 1rem;
    }
    .footer-brand-desc {
      color: rgba(255,255,255,0.75);
      line-height: 1.8;
      max-width: 300px;
    }
    .footer-heading {
      font-size: 16px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 1rem;
      letter-spacing: 0.04em;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 0.5rem;
    }
    .footer-links a {
      color: rgba(255,255,255,0.75);
      transition: color var(--transition);
    }
    .footer-links a:hover {
      color: var(--color-accent);
    }
    .footer-contact {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-contact li {
      margin-bottom: 0.75rem;
      color: rgba(255,255,255,0.75);
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .footer-bottom {
      border-top: 1px solid var(--color-dark-border);
      margin-top: 2rem;
      padding-top: 1.5rem;
      text-align: center;
      font-size: 13px;
      color: rgba(255,255,255,0.7);
    }
    .footer-bottom a {
      color: rgba(255,255,255,0.7);
    }
    .footer-bottom a:hover {
      color: var(--color-accent);
    }
    @media (max-width: 767.98px) {
      .site-footer {
        padding: 3rem 0 1.5rem;
      }
    }
    /* Reduce motion */
    @media (prefers-reduced-motion: reduce) {
      *,
      *::before,
      *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
      }
    }

/* roulang page: category2 */
:root {
            --color-primary: #1A1D1C;
            --color-accent: #C6F24E;
            --color-highlight: #D08C3C;
            --color-bg: #F7F5F0;
            --color-card: #FFFFFF;
            --color-border: #E8E5DE;
            --color-text: #4A4F4D;
            --color-heading: #111413;
            --color-dark-text: #F7F5F0;
            --color-dark-border: rgba(255, 255, 255, 0.14);
            --radius-card: 12px;
            --radius-btn: 8px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-card-hover: 0 12px 28px rgba(0, 0, 0, 0.10);
            --transition: 0.2s ease;
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --max-width: 1200px;
            --section-spacing: 96px;
            --section-spacing-mobile: 56px;
            --gutter: 24px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.9;
            color: var(--color-text);
            background-color: var(--color-bg);
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }

        a:hover {
            color: var(--color-accent);
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            max-width: 1280px;
            padding-left: var(--gutter);
            padding-right: var(--gutter);
        }

        section {
            padding: var(--section-spacing-mobile) 0;
            position: relative;
        }

        @media (min-width: 992px) {
            section {
                padding: var(--section-spacing) 0;
            }
        }

        body {
            font-size: 15px;
        }

        @media (min-width: 768px) {
            body {
                font-size: 16px;
            }
        }

        .section-label {
            display: inline-block;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--color-highlight);
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 16px;
            line-height: 1.35;
        }

        @media (min-width: 768px) {
            .section-title {
                font-size: 30px;
            }
        }

        @media (min-width: 992px) {
            .section-title {
                font-size: 36px;
            }
        }

        .section-desc {
            font-size: 15px;
            color: var(--color-text);
            max-width: 720px;
            line-height: 1.9;
        }

        @media (min-width: 768px) {
            .section-desc {
                font-size: 17px;
            }
        }

        .btn {
            border-radius: var(--radius-btn);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 16px;
            transition: all var(--transition);
            border: 1px solid transparent;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn:focus,
        .btn:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            box-shadow: none;
        }

        .btn-primary-custom {
            background-color: var(--color-primary);
            color: #fff;
            border: 1px solid var(--color-primary);
        }

        .btn-primary-custom:hover {
            background-color: var(--color-accent);
            color: var(--color-primary);
            border-color: var(--color-accent);
            transform: translateY(-2px);
        }

        .btn-accent {
            background-color: var(--color-accent);
            color: var(--color-primary);
            border: 1px solid var(--color-accent);
        }

        .btn-accent:hover {
            background-color: var(--color-highlight);
            color: #fff;
            border-color: var(--color-highlight);
            transform: translateY(-2px);
        }

        .btn-outline-dark {
            background-color: transparent;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }

        .btn-outline-dark:hover {
            background-color: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            transform: translateY(-2px);
        }

        .btn-outline-light {
            background-color: transparent;
            color: var(--color-dark-text);
            border: 1px solid rgba(255, 255, 255, 0.5);
        }

        .btn-outline-light:hover {
            background-color: rgba(255, 255, 255, 0.12);
            color: var(--color-accent);
            border-color: var(--color-accent);
            transform: translateY(-2px);
        }

        .btn-read-more {
            background: none;
            border: none;
            padding: 0;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border-bottom: 2px solid var(--color-accent);
            border-radius: 0;
            padding-bottom: 2px;
            transition: all var(--transition);
        }

        .btn-read-more:hover {
            color: var(--color-highlight);
            border-bottom-color: var(--color-highlight);
            transform: translateX(4px);
        }

        .btn-read-more i {
            font-size: 13px;
            transition: transform var(--transition);
        }

        .btn-read-more:hover i {
            transform: translateX(3px);
        }

        /* Header / Navigation */
        .site-header {
            background-color: #fff;
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.07);
        }

        .navbar {
            padding: 14px 0;
        }

        .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.02em;
        }

        .navbar-brand:hover {
            color: var(--color-primary);
        }

        .brand-icon {
            width: 36px;
            height: 36px;
            background: var(--color-primary);
            color: var(--color-accent);
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .navbar .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            padding: 8px 14px;
            transition: color var(--transition);
            position: relative;
        }

        .navbar .nav-link:hover {
            color: var(--color-primary);
        }

        .navbar .nav-link.active {
            color: var(--color-primary);
            font-weight: 600;
        }

        .navbar .nav-link.active::after {
            content: '';
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 0;
            height: 3px;
            background-color: var(--color-accent);
            border-radius: 2px;
        }

        .header-cta {
            font-size: 14px;
            padding: 10px 20px;
            white-space: nowrap;
        }

        .navbar-toggler {
            border: none;
            padding: 6px;
        }

        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 6px;
        }

        @media (max-width: 991.98px) {
            .navbar-collapse {
                background-color: #fff;
                border-radius: var(--radius-card);
                padding: 16px;
                margin-top: 12px;
                box-shadow: var(--shadow-card-hover);
                border: 1px solid var(--color-border);
            }
            .navbar .nav-item {
                margin-bottom: 4px;
            }
            .navbar .nav-link.active::after {
                left: 0;
                right: auto;
                width: 3px;
                height: auto;
                top: 8px;
                bottom: 8px;
                background-color: var(--color-accent);
                border-radius: 2px;
            }
            .navbar .nav-link.active {
                padding-left: 18px;
            }
            .header-cta {
                margin-top: 10px;
                width: 100%;
                justify-content: center;
            }
        }

        /* Breadcrumb */
        .breadcrumb-wrapper {
            padding: 28px 0 8px;
            background-color: transparent;
        }

        .breadcrumb-custom {
            margin: 0;
            padding: 0;
            list-style: none;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text);
        }

        .breadcrumb-custom li {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb-custom li + li::before {
            content: '/';
            color: var(--color-border);
            font-size: 13px;
            margin-right: 4px;
        }

        .breadcrumb-custom a {
            color: var(--color-text);
            transition: color var(--transition);
        }

        .breadcrumb-custom a:hover {
            color: var(--color-highlight);
        }

        .breadcrumb-custom .current {
            color: var(--color-primary);
            font-weight: 600;
        }

        /* Category Page Header */
        .category-page-header {
            padding: 48px 0 40px;
        }

        .category-h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 16px;
            line-height: 1.35;
        }

        @media (min-width: 768px) {
            .category-h1 {
                font-size: 38px;
            }
        }

        @media (min-width: 992px) {
            .category-h1 {
                font-size: 44px;
            }
        }

        .category-intro {
            font-size: 16px;
            color: var(--color-text);
            max-width: 780px;
            line-height: 1.95;
            margin-bottom: 0;
        }

        /* Large Image Card Grid */
        .activity-card-grid {
            padding-top: 16px;
        }

        .activity-card {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            min-height: 380px;
            display: flex;
            align-items: flex-end;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            isolation: isolate;
            background-color: var(--color-primary);
            cursor: pointer;
        }

        .activity-card::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(26, 29, 28, 0.05) 0%, rgba(26, 29, 28, 0.55) 45%, rgba(26, 29, 28, 0.85) 100%);
            z-index: 1;
            transition: background 0.3s ease;
            pointer-events: none;
        }

        .activity-card:hover::before {
            background: linear-gradient(180deg, rgba(26, 29, 28, 0.15) 0%, rgba(26, 29, 28, 0.65) 45%, rgba(26, 29, 28, 0.92) 100%);
        }

        .activity-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 0;
            transition: transform 0.5s ease;
        }

        .activity-card:hover img {
            transform: scale(1.06);
        }

        .activity-card-body {
            position: relative;
            z-index: 2;
            padding: 28px 24px;
            color: var(--color-dark-text);
            width: 100%;
        }

        .activity-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.04em;
            padding: 4px 12px;
            border-radius: 4px;
            background-color: var(--color-accent);
            color: var(--color-primary);
            margin-bottom: 12px;
            text-transform: uppercase;
        }

        .activity-card-title {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            line-height: 1.45;
        }

        @media (min-width: 768px) {
            .activity-card-title {
                font-size: 22px;
            }
        }

        .activity-card-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.82);
            line-height: 1.7;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .activity-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            flex-wrap: wrap;
        }

        .activity-card-meta .date {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .activity-card-meta .btn-read-more {
            color: var(--color-accent);
            border-bottom-color: var(--color-accent);
            font-size: 13px;
        }

        .activity-card-meta .btn-read-more:hover {
            color: #fff;
            border-bottom-color: #fff;
        }

        @media (max-width: 575.98px) {
            .activity-card {
                min-height: 300px;
            }
        }

        /* Feature Activity Banner */
        .feature-activity {
            background-color: var(--color-primary);
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
        }

        .feature-activity::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 29, 28, 0.92) 0%, rgba(26, 29, 28, 0.65) 100%);
            z-index: 1;
        }

        .feature-activity .container {
            position: relative;
            z-index: 2;
        }

        .feature-activity-content {
            padding: 64px 0;
            max-width: 620px;
        }

        .feature-activity-content .section-label {
            color: var(--color-accent);
        }

        .feature-activity-content .section-title {
            color: var(--color-dark-text);
        }

        .feature-activity-content p {
            color: rgba(247, 245, 240, 0.85);
            font-size: 16px;
            line-height: 1.95;
            margin-bottom: 24px;
        }

        .feature-activity-content .btn-accent {
            font-size: 16px;
            padding: 14px 32px;
        }

        @media (max-width: 767.98px) {
            .feature-activity-content {
                padding: 48px 0;
            }
        }

        /* Steps */
        .steps-wrapper {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-top: 40px;
        }

        .step-item {
            flex: 1 1 220px;
            background-color: var(--color-card);
            border-radius: var(--radius-card);
            padding: 28px 22px;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            position: relative;
        }

        .step-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-accent);
        }

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background-color: var(--color-primary);
            color: var(--color-accent);
            border-radius: 8px;
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 14px;
        }

        .step-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-heading);
            margin-bottom: 8px;
        }

        .step-desc {
            font-size: 14px;
            color: var(--color-text);
            line-height: 1.8;
            margin: 0;
        }

        /* FAQ */
        .accordion-custom .accordion-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card) !important;
            margin-bottom: 12px;
            overflow: hidden;
            background-color: var(--color-card);
            box-shadow: var(--shadow-card);
        }

        .accordion-custom .accordion-button {
            background-color: var(--color-card);
            color: var(--color-heading);
            font-size: 17px;
            font-weight: 600;
            padding: 20px 24px;
            border-radius: 0 !important;
            box-shadow: none !important;
            transition: all var(--transition);
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background-color: var(--color-card);
            color: var(--color-primary);
            border-bottom: 1px solid var(--color-border);
        }

        .accordion-custom .accordion-button:focus {
            outline: 2px solid var(--color-accent);
            outline-offset: -2px;
            box-shadow: none;
        }

        .accordion-custom .accordion-button::after {
            background-size: 16px;
            transition: transform var(--transition);
        }

        .accordion-custom .accordion-body {
            padding: 20px 24px;
            font-size: 15px;
            color: var(--color-text);
            line-height: 1.9;
            background-color: #fff;
        }

        /* CTA Section */
        .cta-section {
            background-color: var(--color-primary);
            padding: 64px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(198, 242, 78, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
        }

        .cta-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-dark-text);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        @media (min-width: 768px) {
            .cta-title {
                font-size: 34px;
            }
        }

        .cta-desc {
            font-size: 16px;
            color: rgba(247, 245, 240, 0.8);
            max-width: 600px;
            line-height: 1.9;
            margin-bottom: 28px;
        }

        /* Footer */
        .site-footer {
            background-color: var(--color-primary);
            color: rgba(247, 245, 240, 0.78);
            padding: 60px 0 24px;
            font-size: 14px;
        }

        .footer-brand-title {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--color-dark-text);
            margin-bottom: 16px;
        }

        .footer-brand-desc {
            font-size: 14px;
            line-height: 1.85;
            color: rgba(247, 245, 240, 0.7);
            margin-bottom: 20px;
            max-width: 340px;
        }

        .footer-heading {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-dark-text);
            margin-bottom: 16px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 8px;
        }

        .footer-links a {
            color: rgba(247, 245, 240, 0.7);
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition);
        }

        .footer-links a:hover {
            color: var(--color-accent);
            transform: translateX(3px);
        }

        .footer-links i {
            font-size: 11px;
            color: var(--color-accent);
        }

        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-bottom: 10px;
            font-size: 14px;
            color: rgba(247, 245, 240, 0.7);
        }

        .footer-contact i {
            color: var(--color-accent);
            font-size: 14px;
            margin-top: 4px;
            flex-shrink: 0;
        }

        .footer-bottom {
            border-top: 1px solid var(--color-dark-border);
            margin-top: 40px;
            padding-top: 20px;
            font-size: 13px;
            color: rgba(247, 245, 240, 0.6);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }

        .footer-bottom a {
            color: rgba(247, 245, 240, 0.6);
            transition: color var(--transition);
        }

        .footer-bottom a:hover {
            color: var(--color-accent);
        }

        @media (max-width: 575.98px) {
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

        /* Reduced motion */
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }
            html {
                scroll-behavior: auto;
            }
            .activity-card img,
            .activity-card:hover img {
                transform: none;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #1A1D1C;
            --color-accent: #C6F24E;
            --color-highlight: #D08C3C;
            --color-bg: #F7F5F0;
            --color-card: #FFFFFF;
            --color-border: #E8E5DE;
            --color-text: #4A4F4D;
            --color-heading: #111413;
            --color-dark-text: #F7F5F0;
            --color-dark-border: rgba(255, 255, 255, 0.14);
            --radius-card: 12px;
            --radius-btn: 8px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-card-hover: 0 12px 28px rgba(0, 0, 0, 0.10);
            --transition: 0.2s ease;
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --max-width: 1200px;
            --section-spacing: 96px;
            --section-spacing-mobile: 56px;
            --gutter: 24px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.9;
            color: var(--color-text);
            background-color: var(--color-bg);
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }

        a:hover {
            color: var(--color-highlight);
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            max-width: var(--max-width);
            padding-left: var(--gutter);
            padding-right: var(--gutter);
        }

        section {
            padding: var(--section-spacing) 0;
            position: relative;
        }

        .section-label {
            display: inline-block;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--color-highlight);
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 16px;
        }

        .section-desc {
            font-size: 17px;
            color: var(--color-text);
            max-width: 720px;
            line-height: 1.9;
        }

        .btn {
            border-radius: var(--radius-btn);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 16px;
            transition: all var(--transition);
            border: 1px solid transparent;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn:focus,
        .btn:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            box-shadow: none;
        }

        .btn-primary-custom {
            background-color: var(--color-primary);
            color: #fff;
            border: 1px solid var(--color-primary);
        }

        .btn-primary-custom:hover {
            background-color: var(--color-accent);
            color: var(--color-primary);
            border-color: var(--color-accent);
            transform: translateY(-2px);
        }

        .btn-accent {
            background-color: var(--color-accent);
            color: var(--color-primary);
            border: 1px solid var(--color-accent);
        }

        .btn-accent:hover {
            background-color: var(--color-highlight);
            color: #fff;
            border-color: var(--color-highlight);
            transform: translateY(-2px);
        }

        .btn-outline-dark {
            background-color: transparent;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }

        .btn-outline-dark:hover {
            background-color: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            transform: translateY(-2px);
        }

        .btn-outline-light {
            background-color: transparent;
            color: var(--color-dark-text);
            border: 1px solid rgba(255, 255, 255, 0.5);
        }

        .btn-outline-light:hover {
            background-color: rgba(255, 255, 255, 0.12);
            color: var(--color-accent);
            border-color: var(--color-accent);
            transform: translateY(-2px);
        }

        .btn-read-more {
            background: none;
            border: none;
            padding: 0;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border-bottom: 2px solid var(--color-accent);
            border-radius: 0;
            padding-bottom: 2px;
            transition: all var(--transition);
        }

        .btn-read-more:hover {
            color: var(--color-highlight);
            border-bottom-color: var(--color-highlight);
            transform: translateX(4px);
        }

        .btn-read-more i {
            font-size: 13px;
            transition: transform var(--transition);
        }

        .btn-read-more:hover i {
            transform: translateX(3px);
        }

        /* Header / Navigation */
        .site-header {
            background-color: #fff;
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 1030;
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
        }

        .navbar {
            padding: 12px 0;
        }

        .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--color-heading);
            transition: color var(--transition);
        }

        .navbar-brand:hover {
            color: var(--color-primary);
        }

        .brand-icon {
            width: 36px;
            height: 36px;
            background: var(--color-primary);
            color: var(--color-accent);
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .navbar-nav .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            padding: 8px 16px;
            position: relative;
            transition: color var(--transition);
            border-radius: 6px;
        }

        .navbar-nav .nav-link:hover {
            color: var(--color-heading);
            background-color: var(--color-bg);
        }

        .navbar-nav .nav-link.active {
            color: var(--color-heading);
            font-weight: 600;
            background-color: rgba(198, 242, 78, 0.18);
        }

        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 1px;
        }

        .header-cta {
            padding: 10px 22px;
            font-size: 15px;
            font-weight: 600;
            white-space: nowrap;
        }

        .navbar-toggler {
            border: none;
            padding: 6px 8px;
        }

        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
        }

        /* Breadcrumb */
        .breadcrumb-wrapper {
            background-color: var(--color-bg);
            padding: 16px 0;
            border-bottom: 1px solid var(--color-border);
        }

        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text);
            margin: 0;
            list-style: none;
            padding: 0;
            flex-wrap: wrap;
        }

        .breadcrumb-custom li {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb-custom li + li::before {
            content: '/';
            color: var(--color-border);
            font-size: 13px;
        }

        .breadcrumb-custom a {
            color: var(--color-text);
            transition: color var(--transition);
        }

        .breadcrumb-custom a:hover {
            color: var(--color-highlight);
        }

        .breadcrumb-custom .current {
            color: var(--color-heading);
            font-weight: 600;
        }

        /* Category Hero */
        .category-hero {
            background-color: var(--color-card);
            border-bottom: 1px solid var(--color-border);
            padding: 48px 0;
        }

        .category-hero h1 {
            font-size: 42px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .category-hero .category-desc {
            font-size: 17px;
            color: var(--color-text);
            max-width: 720px;
            line-height: 1.9;
        }

        .category-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 18px;
        }

        .tag-chip {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            background-color: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text);
            transition: all var(--transition);
        }

        .tag-chip:hover {
            background-color: var(--color-accent);
            color: var(--color-primary);
            border-color: var(--color-accent);
        }

        /* Main Content Layout */
        .category-main {
            padding: 48px 0 80px;
        }

        .sidebar-sticky {
            position: sticky;
            top: 90px;
        }

        .sidebar-card {
            background-color: var(--color-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            padding: 24px;
            margin-bottom: 24px;
            box-shadow: var(--shadow-card);
        }

        .sidebar-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--color-accent);
            display: inline-block;
        }

        .sidebar-nav-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .sidebar-nav-list li {
            margin-bottom: 4px;
        }

        .sidebar-nav-list a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 12px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            transition: all var(--transition);
        }

        .sidebar-nav-list a:hover {
            background-color: var(--color-bg);
            color: var(--color-heading);
        }

        .sidebar-nav-list a i {
            font-size: 14px;
            color: var(--color-highlight);
            width: 18px;
            text-align: center;
            flex-shrink: 0;
        }

        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .sidebar-tags .tag-link {
            padding: 6px 14px;
            background-color: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: 20px;
            font-size: 13px;
            color: var(--color-text);
            transition: all var(--transition);
        }

        .sidebar-tags .tag-link:hover {
            background-color: var(--color-accent);
            color: var(--color-primary);
            border-color: var(--color-accent);
        }

        .subscribe-box {
            margin-top: 16px;
        }

        .subscribe-box .form-control {
            border-radius: var(--radius-btn);
            border: 1px solid var(--color-border);
            padding: 10px 16px;
            font-size: 14px;
            background-color: var(--color-bg);
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .subscribe-box .form-control:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(198, 242, 78, 0.2);
            outline: none;
        }

        .subscribe-box .btn-subscribe {
            width: 100%;
            margin-top: 10px;
            background-color: var(--color-primary);
            color: #fff;
            border-radius: var(--radius-btn);
            padding: 10px 16px;
            font-weight: 600;
            font-size: 14px;
            transition: all var(--transition);
        }

        .subscribe-box .btn-subscribe:hover {
            background-color: var(--color-accent);
            color: var(--color-primary);
        }

        /* Article List */
        .article-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .article-list-item {
            display: flex;
            gap: 20px;
            padding: 24px 0;
            border-bottom: 1px solid var(--color-border);
            transition: background-color var(--transition), padding-left var(--transition);
            border-radius: 8px;
        }

        .article-list-item:first-child {
            padding-top: 0;
        }

        .article-list-item:last-child {
            border-bottom: none;
        }

        .article-list-item:hover {
            background-color: rgba(247, 245, 240, 0.6);
            padding-left: 12px;
        }

        .article-thumb {
            flex-shrink: 0;
            width: 180px;
            height: 120px;
            border-radius: var(--radius-card);
            overflow: hidden;
            background-color: var(--color-bg);
            border: 1px solid var(--color-border);
        }

        .article-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition);
        }

        .article-list-item:hover .article-thumb img {
            transform: scale(1.05);
        }

        .article-content {
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 8px;
        }

        .article-date {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-highlight);
            letter-spacing: 0.03em;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .article-date i {
            font-size: 13px;
        }

        .article-tag {
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            background-color: rgba(198, 242, 78, 0.2);
            color: var(--color-primary);
            border-radius: 14px;
            letter-spacing: 0.03em;
        }

        .article-title-link {
            font-size: 19px;
            font-weight: 700;
            color: var(--color-heading);
            line-height: 1.5;
            margin-bottom: 8px;
            transition: color var(--transition);
            display: inline-block;
        }

        .article-title-link:hover {
            color: var(--color-highlight);
        }

        .article-excerpt {
            font-size: 15px;
            color: var(--color-text);
            line-height: 1.8;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-footer-actions {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: auto;
        }

        /* Deep CTA Section */
        .cta-section {
            background-color: var(--color-primary);
            padding: 64px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 240px;
            height: 240px;
            background: rgba(198, 242, 78, 0.08);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-content {
            position: relative;
            z-index: 1;
        }

        .cta-content h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-dark-text);
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .cta-content p {
            font-size: 17px;
            color: rgba(247, 245, 240, 0.8);
            max-width: 640px;
            line-height: 1.9;
            margin-bottom: 24px;
        }

        /* FAQ Section */
        .faq-section {
            background-color: var(--color-card);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

        .accordion-custom .accordion-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            margin-bottom: 16px;
            overflow: hidden;
            background-color: var(--color-card);
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .accordion-custom .accordion-item:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-card);
        }

        .accordion-custom .accordion-button {
            background-color: var(--color-card);
            font-size: 17px;
            font-weight: 600;
            color: var(--color-heading);
            padding: 18px 24px;
            border: none;
            box-shadow: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: color var(--transition);
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background-color: var(--color-card);
            color: var(--color-heading);
            box-shadow: none;
            border-bottom: 1px solid var(--color-border);
        }

        .accordion-custom .accordion-button::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            background: none;
            font-size: 14px;
            color: var(--color-highlight);
            transition: transform var(--transition);
        }

        .accordion-custom .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: var(--color-accent);
        }

        .accordion-custom .accordion-body {
            padding: 18px 24px;
            font-size: 16px;
            color: var(--color-text);
            line-height: 1.9;
            background-color: var(--color-card);
        }

        /* Footer */
        .site-footer {
            background-color: var(--color-primary);
            color: rgba(247, 245, 240, 0.75);
            padding: 64px 0 0;
            margin-top: 0;
        }

        .footer-brand-title {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--color-dark-text);
            margin-bottom: 16px;
        }

        .footer-brand-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(247, 245, 240, 0.65);
            max-width: 320px;
        }

        .footer-heading {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-dark-text);
            margin-bottom: 18px;
            letter-spacing: 0.03em;
        }

        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            font-size: 14px;
            color: rgba(247, 245, 240, 0.65);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color var(--transition);
        }

        .footer-links a:hover {
            color: var(--color-accent);
        }

        .footer-links a i {
            font-size: 11px;
            color: var(--color-accent);
        }

        .footer-contact {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-contact li {
            font-size: 14px;
            color: rgba(247, 245, 240, 0.65);
            margin-bottom: 10px;
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }

        .footer-contact i {
            font-size: 14px;
            color: var(--color-accent);
            margin-top: 3px;
            flex-shrink: 0;
        }

        .footer-bottom {
            border-top: 1px solid var(--color-dark-border);
            padding: 20px 0;
            margin-top: 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(247, 245, 240, 0.55);
        }

        .footer-bottom-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-bottom-links a {
            color: rgba(247, 245, 240, 0.55);
            transition: color var(--transition);
        }

        .footer-bottom-links a:hover {
            color: var(--color-accent);
        }

        /* Responsive */
        @media (max-width: 991.98px) {
            .category-hero h1 {
                font-size: 34px;
            }
            .article-thumb {
                width: 140px;
                height: 100px;
            }
            .article-list-item {
                flex-direction: column;
                gap: 14px;
            }
            .article-thumb {
                width: 100%;
                height: 200px;
            }
            .sidebar-sticky {
                position: static;
                margin-bottom: 32px;
            }
        }

        @media (max-width: 767.98px) {
            section {
                padding: var(--section-spacing-mobile) 0;
            }
            .category-hero {
                padding: 32px 0;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .category-hero .category-desc {
                font-size: 15px;
            }
            .category-main {
                padding: 32px 0 56px;
            }
            .article-list-item {
                padding: 18px 0;
            }
            .article-thumb {
                height: 180px;
            }
            .article-title-link {
                font-size: 17px;
            }
            .cta-section {
                padding: 48px 0;
            }
            .cta-content h2 {
                font-size: 26px;
            }
            .cta-content p {
                font-size: 15px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
            .footer-bottom-links {
                justify-content: center;
            }
            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
            .navbar-brand {
                font-size: 19px;
            }
        }

        @media (max-width: 575.98px) {
            .category-hero h1 {
                font-size: 24px;
                line-height: 1.4;
            }
            .article-thumb {
                height: 160px;
            }
            .article-title-link {
                font-size: 16px;
            }
            .article-excerpt {
                font-size: 14px;
            }
            .article-meta {
                gap: 8px;
            }
            .breadcrumb-custom {
                font-size: 12px;
            }
            .sidebar-card {
                padding: 18px 16px;
            }
            .accordion-custom .accordion-button {
                font-size: 15px;
                padding: 14px 18px;
            }
            .accordion-custom .accordion-body {
                font-size: 14px;
                padding: 14px 18px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            html {
                scroll-behavior: auto;
            }
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
        }

/* roulang page: category4 */
:root {
            --color-primary: #1A1D1C;
            --color-accent: #C6F24E;
            --color-highlight: #D08C3C;
            --color-bg: #F7F5F0;
            --color-card: #FFFFFF;
            --color-border: #E8E5DE;
            --color-text: #4A4F4D;
            --color-heading: #111413;
            --color-dark-text: #F7F5F0;
            --color-dark-border: rgba(255, 255, 255, 0.14);
            --radius-card: 12px;
            --radius-btn: 8px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-card-hover: 0 12px 28px rgba(0, 0, 0, 0.10);
            --transition: 0.2s ease;
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --max-width: 1200px;
            --section-spacing: 96px;
            --section-spacing-mobile: 56px;
            --gutter: 24px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.9;
            color: var(--color-text);
            background-color: var(--color-bg);
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--color-accent);
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        .container {
            max-width: 1280px;
            padding-left: var(--gutter);
            padding-right: var(--gutter);
        }
        section {
            padding: var(--section-spacing) 0;
            position: relative;
        }
        .section-label {
            display: inline-block;
            font-size: 14px;
            font-weight: 700;
            letter-spacing: 0.08em;
            color: var(--color-highlight);
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 16px;
            line-height: 1.35;
        }
        .section-desc {
            font-size: 17px;
            color: var(--color-text);
            max-width: 720px;
            line-height: 1.9;
        }

        .btn {
            border-radius: var(--radius-btn);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 16px;
            transition: all var(--transition);
            border: 1px solid transparent;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn:focus,
        .btn:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            box-shadow: none;
        }
        .btn-primary-custom {
            background-color: var(--color-primary);
            color: #fff;
            border: 1px solid var(--color-primary);
        }
        .btn-primary-custom:hover {
            background-color: var(--color-accent);
            color: var(--color-primary);
            border-color: var(--color-accent);
            transform: translateY(-2px);
        }
        .btn-accent {
            background-color: var(--color-accent);
            color: var(--color-primary);
            border: 1px solid var(--color-accent);
        }
        .btn-accent:hover {
            background-color: var(--color-highlight);
            color: #fff;
            border-color: var(--color-highlight);
            transform: translateY(-2px);
        }
        .btn-outline-dark {
            background-color: transparent;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }
        .btn-outline-dark:hover {
            background-color: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            transform: translateY(-2px);
        }
        .btn-outline-light {
            background-color: transparent;
            color: var(--color-dark-text);
            border: 1px solid rgba(255, 255, 255, 0.5);
        }
        .btn-outline-light:hover {
            background-color: rgba(255, 255, 255, 0.12);
            color: var(--color-accent);
            border-color: var(--color-accent);
            transform: translateY(-2px);
        }
        .btn-read-more {
            background: none;
            border: none;
            padding: 0;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border-bottom: 2px solid var(--color-accent);
            border-radius: 0;
            padding-bottom: 2px;
            transition: all var(--transition);
        }
        .btn-read-more:hover {
            color: var(--color-highlight);
            border-bottom-color: var(--color-highlight);
            transform: translateX(4px);
        }
        .btn-read-more i {
            font-size: 13px;
            transition: transform var(--transition);
        }
        .btn-read-more:hover i {
            transform: translateX(3px);
        }

        /* Header / Navigation */
        .site-header {
            background-color: #fff;
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 1030;
            padding: 0;
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
        }
        .navbar {
            padding: 14px 0;
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 20px;
            color: var(--color-heading);
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 0.01em;
        }
        .navbar-brand:hover {
            color: var(--color-primary);
        }
        .brand-icon {
            width: 36px;
            height: 36px;
            background: var(--color-accent);
            color: var(--color-primary);
            border-radius: 9px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 18px;
            flex-shrink: 0;
        }
        .navbar .nav-link {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            padding: 8px 14px;
            position: relative;
            transition: color var(--transition);
            letter-spacing: 0.01em;
        }
        .navbar .nav-link:hover {
            color: var(--color-primary);
        }
        .navbar .nav-link.active {
            color: var(--color-primary);
            font-weight: 700;
        }
        .navbar .nav-link.active::after {
            content: '';
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 2px;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 2px;
        }
        .header-cta {
            font-size: 14px;
            padding: 10px 20px;
            white-space: nowrap;
        }
        .navbar-toggler {
            border: none;
            padding: 6px 8px;
        }
        .navbar-toggler:focus {
            box-shadow: none;
        }

        /* Breadcrumb */
        .breadcrumb-bar {
            background: #fff;
            border-bottom: 1px solid var(--color-border);
            padding: 16px 0;
        }
        .breadcrumb {
            margin: 0;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text);
            --bs-breadcrumb-divider-color: #aaa;
        }
        .breadcrumb-item a {
            color: var(--color-text);
        }
        .breadcrumb-item a:hover {
            color: var(--color-highlight);
        }
        .breadcrumb-item.active {
            color: var(--color-primary);
            font-weight: 600;
        }

        /* Page Hero */
        .page-hero {
            background: linear-gradient(135deg, rgba(26,29,28,0.88), rgba(26,29,28,0.62)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            padding: 88px 0 80px;
            position: relative;
            color: var(--color-dark-text);
        }
        .page-hero .section-label {
            color: var(--color-accent);
        }
        .page-hero .section-title {
            color: #fff;
            font-size: 44px;
            margin-bottom: 18px;
        }
        .page-hero .section-desc {
            color: rgba(247, 245, 240, 0.85);
            max-width: 680px;
            font-size: 17px;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            margin-top: 28px;
        }
        .hero-meta-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            font-weight: 500;
            color: rgba(247, 245, 240, 0.9);
        }
        .hero-meta-item i {
            color: var(--color-accent);
            font-size: 18px;
        }

        /* Quick highlights */
        .quick-highlights {
            background: #fff;
            border-bottom: 1px solid var(--color-border);
            padding: 36px 0;
        }
        .quick-highlight-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 12px 0;
        }
        .quick-highlight-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: var(--color-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--color-highlight);
            flex-shrink: 0;
        }
        .quick-highlight-text h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 2px;
        }
        .quick-highlight-text p {
            font-size: 14px;
            color: var(--color-text);
            margin: 0;
        }

        /* Timeline Section */
        .timeline-section {
            background: var(--color-bg);
            padding-bottom: var(--section-spacing);
        }
        .timeline-wrapper {
            position: relative;
            padding-left: 48px;
        }
        .timeline-wrapper::before {
            content: '';
            position: absolute;
            left: 19px;
            top: 8px;
            bottom: 8px;
            width: 2px;
            background: var(--color-border);
            border-radius: 2px;
        }
        .timeline-item {
            position: relative;
            margin-bottom: 40px;
            display: grid;
            grid-template-columns: 100px 1fr;
            gap: 32px;
            align-items: start;
        }
        .timeline-item:last-child {
            margin-bottom: 0;
        }
        .timeline-node {
            display: flex;
            flex-direction: column;
            align-items: flex-end;
            gap: 6px;
            padding-top: 4px;
        }
        .timeline-date {
            font-size: 14px;
            font-weight: 700;
            color: var(--color-highlight);
            letter-spacing: 0.04em;
            white-space: nowrap;
        }
        .timeline-dot {
            position: absolute;
            left: -48px;
            top: 10px;
            width: 40px;
            height: 40px;
            background: var(--color-card);
            border: 2px solid var(--color-accent);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--color-primary);
            font-weight: 700;
            box-shadow: 0 2px 10px rgba(0,0,0,0.06);
            z-index: 2;
        }
        .timeline-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 0;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .timeline-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .timeline-card-img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            display: block;
            transition: transform 0.4s ease;
        }
        .timeline-card:hover .timeline-card-img {
            transform: scale(1.03);
        }
        .timeline-card-body {
            padding: 28px 32px 30px;
        }
        .timeline-card-body .tag-row {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 14px;
        }
        .tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            background: var(--color-bg);
            color: var(--color-text);
            letter-spacing: 0.02em;
        }
        .tag.tag-accent {
            background: rgba(198, 242, 78, 0.25);
            color: #3a4a12;
        }
        .tag.tag-highlight {
            background: rgba(208, 140, 60, 0.18);
            color: #8a5c24;
        }
        .timeline-card-body h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 12px;
            line-height: 1.4;
        }
        .timeline-card-body p {
            font-size: 16px;
            color: var(--color-text);
            line-height: 1.9;
            margin-bottom: 18px;
        }
        .timeline-card-body .promo-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 14px;
            color: var(--color-text);
            margin-bottom: 18px;
            padding-top: 14px;
            border-top: 1px solid var(--color-border);
        }
        .timeline-card-body .promo-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .timeline-card-body .promo-meta i {
            color: var(--color-highlight);
        }

        /* Side card */
        .side-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
        }
        .side-card h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 16px;
        }
        .side-card .form-control {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            padding: 12px 16px;
            font-size: 15px;
            background: var(--color-bg);
            color: var(--color-heading);
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .side-card .form-control:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(198, 242, 78, 0.2);
            outline: none;
        }
        .side-card .btn {
            width: 100%;
            justify-content: center;
        }
        .hot-tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .hot-tag-list a {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            background: var(--color-bg);
            color: var(--color-text);
            border: 1px solid var(--color-border);
            transition: all var(--transition);
        }
        .hot-tag-list a:hover {
            background: var(--color-accent);
            color: var(--color-primary);
            border-color: var(--color-accent);
        }

        /* FAQ */
        .faq-section {
            background: #fff;
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        .accordion-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card) !important;
            margin-bottom: 16px;
            overflow: hidden;
            background: #fff;
            box-shadow: var(--shadow-card);
        }
        .accordion-button {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-heading);
            padding: 20px 24px;
            background: #fff;
            transition: all var(--transition);
        }
        .accordion-button:not(.collapsed) {
            background-color: var(--color-bg);
            color: var(--color-primary);
            box-shadow: none;
            border-bottom: 2px solid var(--color-accent);
        }
        .accordion-button:focus {
            box-shadow: none;
            border-color: var(--color-accent);
        }
        .accordion-button::after {
            background-image: none;
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 14px;
            color: var(--color-highlight);
        }
        .accordion-button:not(.collapsed)::after {
            background-image: none;
            content: '\f077';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            color: var(--color-highlight);
        }
        .accordion-body {
            font-size: 16px;
            line-height: 1.9;
            color: var(--color-text);
            padding: 20px 24px;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, rgba(26,29,28,0.92), rgba(26,29,28,0.72)), url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            padding: 80px 0;
            color: var(--color-dark-text);
            text-align: center;
        }
        .cta-section h2 {
            font-size: 34px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 17px;
            color: rgba(247, 245, 240, 0.85);
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-section .btn {
            margin: 0 8px;
        }

        /* Footer */
        .site-footer {
            background-color: var(--color-primary);
            color: rgba(247, 245, 240, 0.75);
            padding: 72px 0 30px;
        }
        .site-footer h4 {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }
        .footer-brand-title {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(247, 245, 240, 0.7);
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: rgba(247, 245, 240, 0.7);
            font-size: 14px;
            transition: color var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-links a:hover {
            color: var(--color-accent);
        }
        .footer-links i {
            font-size: 12px;
            color: var(--color-highlight);
        }
        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-contact li {
            margin-bottom: 12px;
            font-size: 14px;
            color: rgba(247, 245, 240, 0.7);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-contact i {
            color: var(--color-accent);
            width: 16px;
        }
        .footer-bottom {
            border-top: 1px solid var(--color-dark-border);
            margin-top: 48px;
            padding-top: 24px;
            font-size: 13px;
            color: rgba(247, 245, 240, 0.65);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }
        .footer-bottom a {
            color: rgba(247, 245, 240, 0.65);
            transition: color var(--transition);
        }
        .footer-bottom a:hover {
            color: var(--color-accent);
        }

        /* Animations */
        .reveal {
            opacity: 0;
            transform: translateY(12px);
            transition: opacity 0.3s ease, transform 0.3s ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
            .reveal {
                opacity: 1;
                transform: none;
            }
        }

        /* Responsive */
        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: #fff;
                border-radius: 12px;
                padding: 16px;
                margin-top: 12px;
                box-shadow: 0 8px 24px rgba(0,0,0,0.08);
                border: 1px solid var(--color-border);
            }
            .navbar .nav-link.active::after {
                display: none;
            }
            .navbar .nav-link.active {
                background: rgba(198, 242, 78, 0.15);
                border-radius: 8px;
            }
            .header-cta {
                margin-top: 8px;
                width: 100%;
                justify-content: center;
            }
        }
        @media (max-width: 767.98px) {
            section {
                padding: var(--section-spacing-mobile) 0;
            }
            .page-hero {
                padding: 56px 0 48px;
            }
            .page-hero .section-title {
                font-size: 32px;
            }
            .timeline-wrapper {
                padding-left: 36px;
            }
            .timeline-wrapper::before {
                left: 13px;
            }
            .timeline-dot {
                left: -36px;
                width: 30px;
                height: 30px;
                font-size: 13px;
                top: 6px;
            }
            .timeline-item {
                grid-template-columns: 1fr;
                gap: 10px;
                margin-bottom: 28px;
            }
            .timeline-node {
                align-items: flex-start;
                padding-left: 6px;
            }
            .timeline-card-img {
                height: 180px;
            }
            .timeline-card-body {
                padding: 20px;
            }
            .timeline-card-body h3 {
                font-size: 18px;
            }
            .section-title {
                font-size: 26px;
            }
            .cta-section h2 {
                font-size: 26px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 575.98px) {
            body {
                font-size: 15px;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .page-hero .section-title {
                font-size: 28px;
            }
            .page-hero .section-desc {
                font-size: 15px;
            }
            .hero-meta {
                gap: 16px;
                flex-direction: column;
            }
            .timeline-card-img {
                height: 160px;
            }
        }

/* roulang page: category5 */
:root {
            --color-primary: #1A1D1C;
            --color-accent: #C6F24E;
            --color-highlight: #D08C3C;
            --color-bg: #F7F5F0;
            --color-card: #FFFFFF;
            --color-border: #E8E5DE;
            --color-text: #4A4F4D;
            --color-heading: #111413;
            --color-dark-text: #F7F5F0;
            --color-dark-border: rgba(255, 255, 255, 0.14);
            --radius-card: 12px;
            --radius-btn: 8px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-card-hover: 0 12px 28px rgba(0, 0, 0, 0.10);
            --transition: 0.2s ease;
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --max-width: 1200px;
            --section-spacing: 96px;
            --section-spacing-mobile: 56px;
            --gutter: 24px;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.9;
            color: var(--color-text);
            background-color: var(--color-bg);
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }

        a:hover {
            color: var(--color-accent);
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            max-width: 1200px;
            padding-left: var(--gutter);
            padding-right: var(--gutter);
        }

        @media (min-width: 1200px) {
            .container {
                max-width: 1200px;
            }
        }

        .section-label {
            display: inline-block;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--color-highlight);
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .section-desc {
            font-size: 17px;
            color: var(--color-text);
            max-width: 720px;
            line-height: 1.9;
        }

        .btn {
            border-radius: var(--radius-btn);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 16px;
            transition: all var(--transition);
            border: 1px solid transparent;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn:focus,
        .btn:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            box-shadow: none;
        }

        .btn-primary-custom {
            background-color: var(--color-primary);
            color: #fff;
            border: 1px solid var(--color-primary);
        }

        .btn-primary-custom:hover {
            background-color: var(--color-accent);
            color: var(--color-primary);
            border-color: var(--color-accent);
            transform: translateY(-2px);
        }

        .btn-accent {
            background-color: var(--color-accent);
            color: var(--color-primary);
            border: 1px solid var(--color-accent);
        }

        .btn-accent:hover {
            background-color: var(--color-highlight);
            color: #fff;
            border-color: var(--color-highlight);
            transform: translateY(-2px);
        }

        .btn-outline-dark {
            background-color: transparent;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }

        .btn-outline-dark:hover {
            background-color: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            transform: translateY(-2px);
        }

        .btn-outline-light {
            background-color: transparent;
            color: var(--color-dark-text);
            border: 1px solid rgba(255, 255, 255, 0.5);
        }

        .btn-outline-light:hover {
            background-color: rgba(255, 255, 255, 0.12);
            color: var(--color-accent);
            border-color: var(--color-accent);
            transform: translateY(-2px);
        }

        .btn-read-more {
            background: none;
            border: none;
            padding: 0;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border-bottom: 2px solid var(--color-accent);
            border-radius: 0;
            padding-bottom: 2px;
            transition: all var(--transition);
        }

        .btn-read-more:hover {
            color: var(--color-highlight);
            border-bottom-color: var(--color-highlight);
            transform: translateX(4px);
        }

        .btn-read-more i {
            font-size: 13px;
            transition: transform var(--transition);
        }

        .btn-read-more:hover i {
            transform: translateX(3px);
        }

        /* Header / Navigation */
        .site-header {
            background-color: #fff;
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 1030;
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }

        .site-header .navbar {
            padding: 14px 0;
        }

        .navbar-brand {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-primary);
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 0.04em;
        }

        .navbar-brand:hover {
            color: var(--color-primary);
        }

        .brand-icon {
            width: 36px;
            height: 36px;
            background: var(--color-primary);
            color: var(--color-accent);
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0;
        }

        .navbar-nav .nav-item {
            margin: 0 2px;
        }

        .navbar-nav .nav-link {
            color: var(--color-text);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 14px !important;
            border-radius: 6px;
            transition: all var(--transition);
            position: relative;
        }

        .navbar-nav .nav-link:hover {
            color: var(--color-primary);
            background-color: rgba(198, 242, 78, 0.2);
        }

        .navbar-nav .nav-link.active {
            color: var(--color-primary);
            background-color: rgba(198, 242, 78, 0.25);
            font-weight: 600;
        }

        .navbar-nav .nav-link.active::after {
            content: '';
            display: block;
            position: absolute;
            bottom: 2px;
            left: 14px;
            right: 14px;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 1px;
        }

        .navbar-toggler {
            border: none;
            padding: 6px 10px;
            font-size: 20px;
        }

        .navbar-toggler:focus {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            box-shadow: none;
        }

        .header-cta {
            padding: 10px 22px;
            font-size: 15px;
            white-space: nowrap;
        }

        /* Breadcrumb */
        .breadcrumb-section {
            background-color: #fff;
            border-bottom: 1px solid var(--color-border);
            padding: 16px 0;
            margin-bottom: 0;
        }

        .breadcrumb-custom {
            margin: 0;
            padding: 0;
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: var(--color-text);
        }

        .breadcrumb-custom li {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .breadcrumb-custom li a {
            color: var(--color-text);
            font-weight: 500;
        }

        .breadcrumb-custom li a:hover {
            color: var(--color-highlight);
        }

        .breadcrumb-custom li.current {
            color: var(--color-primary);
            font-weight: 600;
        }

        .breadcrumb-custom .separator {
            color: #c0bdb5;
            font-size: 12px;
        }

        /* Category Hero */
        .category-hero {
            background-color: #fff;
            padding: 48px 0 40px;
            border-bottom: 1px solid var(--color-border);
        }

        .category-hero .category-title {
            font-size: 40px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 14px;
            line-height: 1.3;
        }

        .category-hero .category-desc {
            font-size: 16px;
            color: var(--color-text);
            max-width: 760px;
            line-height: 1.9;
            margin-bottom: 0;
        }

        .category-hero .hero-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 18px;
            font-size: 14px;
            color: #8a8f8d;
        }

        .category-hero .hero-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        /* Featured Article (头条大图) */
        .featured-article-section {
            padding: 48px 0 40px;
        }

        .featured-article-card {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            min-height: 380px;
            background-color: var(--color-primary);
            display: flex;
            align-items: flex-end;
        }

        .featured-article-card .featured-bg {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-size: cover;
            background-position: center;
            transition: transform 0.6s ease;
        }

        .featured-article-card:hover .featured-bg {
            transform: scale(1.03);
        }

        .featured-article-card .overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(135deg, rgba(26, 29, 28, 0.85) 0%, rgba(26, 29, 28, 0.55) 50%, rgba(26, 29, 28, 0.35) 100%);
            z-index: 1;
        }

        .featured-article-card .featured-content {
            position: relative;
            z-index: 2;
            padding: 40px 44px 36px;
            max-width: 780px;
        }

        .featured-article-card .featured-tag {
            display: inline-block;
            background-color: var(--color-accent);
            color: var(--color-primary);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 4px;
            margin-bottom: 14px;
            letter-spacing: 0.04em;
        }

        .featured-article-card .featured-title {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            line-height: 1.35;
        }

        .featured-article-card .featured-summary {
            font-size: 16px;
            color: rgba(247, 245, 240, 0.88);
            line-height: 1.8;
            margin-bottom: 18px;
            max-width: 620px;
        }

        .featured-article-card .featured-date {
            font-size: 14px;
            color: rgba(247, 245, 240, 0.7);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .featured-article-card .btn-read-more-light {
            background: none;
            border: none;
            padding: 0;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border-bottom: 2px solid var(--color-accent);
            border-radius: 0;
            padding-bottom: 2px;
            transition: all var(--transition);
            margin-top: 6px;
        }

        .featured-article-card .btn-read-more-light:hover {
            color: #fff;
            border-bottom-color: #fff;
            transform: translateX(4px);
        }

        /* Sub Articles Grid (两列小条目) */
        .sub-articles-section {
            padding: 12px 0 60px;
        }

        .sub-articles-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .sub-article-card {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
        }

        .sub-article-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: rgba(198, 242, 78, 0.6);
        }

        .sub-article-card .article-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: #f0ede6;
            position: relative;
        }

        .sub-article-card .article-img img,
        .sub-article-card .article-img .img-placeholder {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .sub-article-card:hover .article-img img {
            transform: scale(1.03);
        }

        .img-placeholder {
            background-color: #e5e1d7;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #b5b0a5;
            font-size: 28px;
            font-weight: 600;
        }

        .sub-article-card .article-body {
            padding: 22px 24px 24px;
            display: flex;
            flex-direction: column;
            flex-grow: 1;
        }

        .sub-article-card .article-tag-row {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 10px;
            flex-wrap: wrap;
        }

        .sub-article-card .article-tag {
            display: inline-block;
            background-color: rgba(198, 242, 78, 0.25);
            color: var(--color-primary);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 4px;
            letter-spacing: 0.04em;
        }

        .sub-article-card .article-tag.highlight-tag {
            background-color: rgba(208, 140, 60, 0.18);
            color: var(--color-highlight);
        }

        .sub-article-card .article-date {
            font-size: 13px;
            color: #8a8f8d;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .sub-article-card .article-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 8px;
            line-height: 1.45;
        }

        .sub-article-card .article-summary {
            font-size: 14px;
            color: var(--color-text);
            line-height: 1.75;
            margin-bottom: 14px;
            flex-grow: 1;
        }

        .sub-article-card .article-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
        }

        /* CTA Section */
        .cta-section {
            background-color: var(--color-primary);
            padding: 64px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section .cta-bg-pattern {
            position: absolute;
            top: -80px;
            right: -80px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background-color: rgba(198, 242, 78, 0.08);
            pointer-events: none;
        }

        .cta-section .cta-bg-pattern-2 {
            position: absolute;
            bottom: -60px;
            left: 10%;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background-color: rgba(208, 140, 60, 0.1);
            pointer-events: none;
        }

        .cta-section .cta-content {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }

        .cta-section .cta-text {
            max-width: 560px;
        }

        .cta-section .cta-title {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .cta-section .cta-desc {
            font-size: 15px;
            color: rgba(247, 245, 240, 0.8);
            line-height: 1.8;
            margin-bottom: 0;
        }

        .cta-section .cta-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* Footer */
        .site-footer {
            background-color: var(--color-primary);
            color: rgba(247, 245, 240, 0.8);
            padding: 64px 0 28px;
            border-top: 1px solid var(--color-dark-border);
        }

        .footer-brand-title {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
            letter-spacing: 0.04em;
        }

        .footer-brand-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(247, 245, 240, 0.7);
            max-width: 320px;
        }

        .footer-heading {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }

        .footer-links,
        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li,
        .footer-contact li {
            margin-bottom: 8px;
        }

        .footer-links a,
        .footer-contact a {
            font-size: 14px;
            color: rgba(247, 245, 240, 0.7);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition);
        }

        .footer-links a:hover,
        .footer-contact a:hover {
            color: var(--color-accent);
        }

        .footer-links i,
        .footer-contact i {
            font-size: 11px;
            color: var(--color-accent);
        }

        .footer-contact li {
            font-size: 14px;
            color: rgba(247, 245, 240, 0.7);
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }

        .footer-contact i {
            margin-top: 5px;
            color: var(--color-accent);
        }

        .footer-bottom {
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid var(--color-dark-border);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(247, 245, 240, 0.6);
        }

        .footer-bottom a {
            color: rgba(247, 245, 240, 0.6);
            transition: color var(--transition);
        }

        .footer-bottom a:hover {
            color: var(--color-accent);
        }

        .footer-bottom .legal-links {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* Responsive */
        @media (max-width: 991.98px) {
            .navbar-nav .nav-link {
                padding: 10px 16px !important;
            }
            .navbar-collapse {
                padding: 16px 0 8px;
                border-top: 1px solid var(--color-border);
                margin-top: 12px;
            }
            .header-cta {
                margin-top: 12px;
                width: 100%;
                justify-content: center;
            }
            .category-hero .category-title {
                font-size: 32px;
            }
            .featured-article-card .featured-title {
                font-size: 24px;
            }
            .featured-article-card .featured-content {
                padding: 28px 24px 24px;
            }
            .sub-articles-grid {
                gap: 18px;
            }
        }

        @media (max-width: 767.98px) {
            .section-title {
                font-size: 28px;
            }
            .category-hero .category-title {
                font-size: 28px;
            }
            .category-hero {
                padding: 36px 0 30px;
            }
            .featured-article-card {
                min-height: 300px;
            }
            .featured-article-card .featured-title {
                font-size: 20px;
            }
            .featured-article-card .featured-summary {
                font-size: 14px;
            }
            .sub-articles-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .cta-section .cta-content {
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

        @media (max-width: 575.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .category-hero .category-title {
                font-size: 24px;
            }
            .category-hero .category-desc {
                font-size: 14px;
            }
            .featured-article-card {
                min-height: 260px;
            }
            .featured-article-card .featured-title {
                font-size: 18px;
            }
            .featured-article-card .featured-content {
                padding: 20px 16px 18px;
            }
            .sub-article-card .article-body {
                padding: 16px 18px 18px;
            }
            .sub-article-card .article-title {
                font-size: 16px;
            }
            .cta-section {
                padding: 48px 0;
            }
            .cta-section .cta-title {
                font-size: 24px;
            }
            .site-footer {
                padding: 48px 0 20px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }
        }

/* roulang page: category6 */
:root {
            --color-primary: #1A1D1C;
            --color-accent: #C6F24E;
            --color-highlight: #D08C3C;
            --color-bg: #F7F5F0;
            --color-card: #FFFFFF;
            --color-border: #E8E5DE;
            --color-text: #4A4F4D;
            --color-heading: #111413;
            --color-dark-text: #F7F5F0;
            --color-dark-border: rgba(255, 255, 255, 0.14);
            --radius-card: 12px;
            --radius-btn: 8px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-card-hover: 0 12px 28px rgba(0, 0, 0, 0.10);
            --transition: 0.2s ease;
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --max-width: 1200px;
            --section-spacing: 96px;
            --section-spacing-mobile: 56px;
            --gutter: 24px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.9;
            color: var(--color-text);
            background-color: var(--color-bg);
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--color-accent);
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        .container {
            max-width: var(--max-width);
            padding-left: var(--gutter);
            padding-right: var(--gutter);
        }
        section {
            padding: var(--section-spacing) 0;
            position: relative;
        }
        .btn {
            border-radius: var(--radius-btn);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 16px;
            transition: all var(--transition);
            border: 1px solid transparent;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn:focus,
        .btn:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            box-shadow: none;
        }
        .btn-primary-custom {
            background-color: var(--color-primary);
            color: #fff;
            border: 1px solid var(--color-primary);
        }
        .btn-primary-custom:hover {
            background-color: var(--color-accent);
            color: var(--color-primary);
            border-color: var(--color-accent);
            transform: translateY(-2px);
        }
        .btn-accent {
            background-color: var(--color-accent);
            color: var(--color-primary);
            border: 1px solid var(--color-accent);
        }
        .btn-accent:hover {
            background-color: var(--color-highlight);
            color: #fff;
            border-color: var(--color-highlight);
            transform: translateY(-2px);
        }
        .btn-outline-dark {
            background-color: transparent;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }
        .btn-outline-dark:hover {
            background-color: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            transform: translateY(-2px);
        }
        .btn-outline-light {
            background-color: transparent;
            color: var(--color-dark-text);
            border: 1px solid rgba(255, 255, 255, 0.5);
        }
        .btn-outline-light:hover {
            background-color: rgba(255, 255, 255, 0.12);
            color: var(--color-accent);
            border-color: var(--color-accent);
            transform: translateY(-2px);
        }
        .btn-read-more {
            background: none;
            border: none;
            padding: 0;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border-bottom: 2px solid var(--color-accent);
            border-radius: 0;
            padding-bottom: 2px;
            transition: all var(--transition);
        }
        .btn-read-more:hover {
            color: var(--color-highlight);
            border-bottom-color: var(--color-highlight);
            transform: translateX(4px);
        }
        .btn-read-more i {
            font-size: 13px;
            transition: transform var(--transition);
        }
        .btn-read-more:hover i {
            transform: translateX(3px);
        }
        .btn-load-more {
            background-color: transparent;
            color: var(--color-primary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            padding: 12px 32px;
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-load-more:hover {
            background-color: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            transform: translateY(-2px);
        }
        .section-label {
            display: inline-block;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--color-highlight);
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 16px;
        }
        .section-desc {
            font-size: 17px;
            color: var(--color-text);
            max-width: 720px;
            line-height: 1.9;
        }
        /* Header Navigation */
        .site-header {
            background-color: #fff;
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 1030;
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
        }
        .site-header .navbar {
            padding: 14px 0;
        }
        .site-header .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 22px;
            color: var(--color-primary);
        }
        .site-header .navbar-brand:hover {
            color: var(--color-primary);
        }
        .brand-icon {
            width: 36px;
            height: 36px;
            background: var(--color-primary);
            color: var(--color-accent);
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .site-header .navbar-nav .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            padding: 8px 14px;
            position: relative;
            transition: color var(--transition);
        }
        .site-header .navbar-nav .nav-link:hover {
            color: var(--color-primary);
        }
        .site-header .navbar-nav .nav-link.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .site-header .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 0;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 1px;
        }
        .header-cta {
            font-size: 15px;
            padding: 10px 22px;
            white-space: nowrap;
        }
        .navbar-toggler {
            border: 1px solid var(--color-border);
            padding: 6px 10px;
            border-radius: 6px;
        }
        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--color-accent);
        }
        /* Breadcrumb */
        .breadcrumb-section {
            background-color: var(--color-bg);
            padding: 20px 0 12px;
        }
        .custom-breadcrumb {
            margin: 0;
            padding: 0;
            list-style: none;
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text);
            flex-wrap: wrap;
        }
        .custom-breadcrumb li {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .custom-breadcrumb li a {
            color: var(--color-text);
            font-weight: 500;
        }
        .custom-breadcrumb li a:hover {
            color: var(--color-highlight);
        }
        .custom-breadcrumb li.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .custom-breadcrumb li .separator {
            color: var(--color-border);
            font-size: 12px;
        }
        /* Category Hero */
        .category-hero {
            background-image: linear-gradient(135deg, rgba(26, 29, 28, 0.85), rgba(26, 29, 28, 0.62)), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 84px 0 72px;
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
        }
        .category-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(198, 242, 78, 0.16);
            border: 1px solid rgba(198, 242, 78, 0.4);
            color: var(--color-accent);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.04em;
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: 18px;
        }
        .category-hero h1 {
            font-size: 48px;
            font-weight: 700;
            color: var(--color-dark-text);
            margin-bottom: 20px;
            line-height: 1.25;
        }
        .category-hero .hero-desc {
            font-size: 18px;
            color: rgba(247, 245, 240, 0.85);
            max-width: 680px;
            line-height: 1.95;
            margin-bottom: 0;
        }
        .hero-stat-row {
            display: flex;
            gap: 40px;
            margin-top: 32px;
            flex-wrap: wrap;
        }
        .hero-stat {
            display: flex;
            flex-direction: column;
        }
        .hero-stat .stat-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-accent);
            line-height: 1.2;
        }
        .hero-stat .stat-label {
            font-size: 14px;
            color: rgba(247, 245, 240, 0.7);
            font-weight: 400;
        }
        /* Community Topics List */
        .topics-list-section {
            background-color: var(--color-bg);
            padding-top: 48px;
            padding-bottom: 60px;
        }
        .topics-toolbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 28px;
        }
        .topics-toolbar .topics-count {
            font-size: 15px;
            color: var(--color-text);
            font-weight: 500;
        }
        .topics-toolbar .topics-count strong {
            color: var(--color-primary);
            font-weight: 700;
        }
        .topics-filter {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .filter-chip {
            font-size: 13px;
            font-weight: 500;
            padding: 6px 16px;
            border-radius: 20px;
            border: 1px solid var(--color-border);
            background: #fff;
            color: var(--color-text);
            transition: all var(--transition);
            cursor: pointer;
        }
        .filter-chip:hover {
            border-color: var(--color-accent);
            color: var(--color-primary);
        }
        .filter-chip.active {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }
        .topic-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            margin-bottom: 20px;
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .topic-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(198, 242, 78, 0.5);
            transform: translateY(-3px);
        }
        .topic-card-inner {
            display: flex;
            flex-wrap: wrap;
            gap: 0;
        }
        .topic-card-image {
            flex: 0 0 280px;
            position: relative;
            overflow: hidden;
            min-height: 200px;
        }
        .topic-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }
        .topic-card:hover .topic-card-image img {
            transform: scale(1.04);
        }
        .topic-card-body {
            flex: 1;
            padding: 24px 28px;
            display: flex;
            flex-direction: column;
        }
        .topic-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 10px;
        }
        .topic-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 4px;
            background: rgba(198, 242, 78, 0.2);
            color: var(--color-primary);
            letter-spacing: 0.03em;
        }
        .topic-tag.highlight-tag {
            background: rgba(208, 140, 60, 0.16);
            color: var(--color-highlight);
        }
        .topic-date {
            font-size: 13px;
            color: #7A7F7D;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .topic-replies {
            font-size: 13px;
            color: #7A7F7D;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .topic-card-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 10px;
            line-height: 1.45;
        }
        .topic-card-excerpt {
            font-size: 15px;
            color: var(--color-text);
            line-height: 1.85;
            margin-bottom: 16px;
            flex: 1;
        }
        .topic-card-footer-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .topic-poster {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: #7A7F7D;
        }
        .poster-avatar {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-primary);
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 600;
            flex-shrink: 0;
        }
        /* Load More Area */
        .load-more-area {
            text-align: center;
            padding: 28px 0 8px;
        }
        .pagination-indicator {
            font-size: 14px;
            color: var(--color-text);
            margin-top: 12px;
        }
        .pagination-indicator span {
            color: var(--color-highlight);
            font-weight: 600;
        }
        /* FAQ */
        .faq-section {
            background-color: var(--color-card);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        .accordion-custom {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            margin-top: 28px;
        }
        .accordion-custom .accordion-item {
            border: none;
            border-bottom: 1px solid var(--color-border);
            background: #fff;
        }
        .accordion-custom .accordion-item:last-child {
            border-bottom: none;
        }
        .accordion-custom .accordion-button {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-heading);
            padding: 20px 24px;
            background: #fff;
            border: none;
            box-shadow: none;
            transition: all var(--transition);
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            background: rgba(198, 242, 78, 0.08);
            color: var(--color-primary);
            box-shadow: none;
        }
        .accordion-custom .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid var(--color-accent);
            outline-offset: -2px;
        }
        .accordion-custom .accordion-button::after {
            width: 16px;
            height: 16px;
            background-size: 16px;
            transition: transform 0.25s ease;
        }
        .accordion-custom .accordion-body {
            font-size: 16px;
            color: var(--color-text);
            line-height: 1.9;
            padding: 0 24px 20px;
        }
        /* CTA Section */
        .community-cta {
            background-color: var(--color-primary);
            background-image: linear-gradient(135deg, rgba(26, 29, 28, 0.92), rgba(26, 29, 28, 0.78)), url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            padding: 84px 0;
            position: relative;
        }
        .community-cta .cta-inner {
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }
        .community-cta .section-label {
            color: var(--color-accent);
        }
        .community-cta .section-title {
            color: var(--color-dark-text);
            font-size: 38px;
        }
        .community-cta .cta-desc {
            color: rgba(247, 245, 240, 0.8);
            font-size: 17px;
            line-height: 1.95;
            margin-bottom: 32px;
        }
        .community-cta .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        /* Footer */
        .site-footer {
            background-color: var(--color-primary);
            color: rgba(247, 245, 240, 0.75);
            padding: 72px 0 0;
            font-size: 15px;
        }
        .site-footer .footer-brand-title {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--color-dark-text);
            margin-bottom: 16px;
        }
        .site-footer .footer-brand-desc {
            font-size: 15px;
            line-height: 1.95;
            color: rgba(247, 245, 240, 0.7);
            margin-bottom: 0;
        }
        .site-footer .footer-heading {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-dark-text);
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 10px;
        }
        .site-footer .footer-links a {
            color: rgba(247, 245, 240, 0.7);
            font-size: 14px;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .site-footer .footer-links a:hover {
            color: var(--color-accent);
            transform: translateX(3px);
        }
        .site-footer .footer-links a i {
            font-size: 10px;
            color: var(--color-accent);
        }
        .site-footer .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-bottom: 12px;
            font-size: 14px;
            color: rgba(247, 245, 240, 0.7);
        }
        .site-footer .footer-contact li i {
            color: var(--color-accent);
            font-size: 14px;
            margin-top: 5px;
            flex-shrink: 0;
        }
        .site-footer .footer-contact li a {
            color: rgba(247, 245, 240, 0.7);
        }
        .site-footer .footer-contact li a:hover {
            color: var(--color-accent);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid var(--color-dark-border);
            padding: 20px 0;
            margin-top: 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(247, 245, 240, 0.6);
        }
        .site-footer .footer-bottom a {
            color: rgba(247, 245, 240, 0.6);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--color-accent);
        }
        .site-footer .footer-bottom .beian-info {
            display: flex;
            gap: 16px;
            align-items: center;
            flex-wrap: wrap;
        }
        .site-footer .footer-bottom .footer-links-row {
            display: flex;
            gap: 16px;
            align-items: center;
        }
        /* Responsive */
        @media (max-width: 991px) {
            .site-header .navbar-nav {
                padding-top: 12px;
                border-top: 1px solid var(--color-border);
                margin-top: 8px;
            }
            .site-header .navbar-nav .nav-link {
                padding: 12px 4px;
                font-size: 16px;
            }
            .site-header .navbar-nav .nav-link.active::after {
                display: none;
            }
            .site-header .navbar-nav .nav-link.active {
                border-left: 3px solid var(--color-accent);
                padding-left: 16px;
            }
            .header-cta {
                margin-top: 12px;
                width: 100%;
                justify-content: center;
            }
            .category-hero h1 {
                font-size: 34px;
            }
            .category-hero .hero-desc {
                font-size: 16px;
            }
            .category-hero {
                min-height: 300px;
                padding: 60px 0 52px;
            }
            .topic-card-image {
                flex: 0 0 100%;
                min-height: 200px;
                max-height: 240px;
            }
            .topic-card-body {
                padding: 20px 20px;
            }
            .section-title {
                font-size: 28px;
            }
            .community-cta .section-title {
                font-size: 28px;
            }
            .hero-stat-row {
                gap: 24px;
            }
            .hero-stat .stat-number {
                font-size: 26px;
            }
        }
        @media (max-width: 767px) {
            section {
                padding: var(--section-spacing-mobile) 0;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .category-hero .hero-desc {
                font-size: 15px;
                line-height: 1.85;
            }
            .category-hero {
                min-height: auto;
                padding: 48px 0 40px;
            }
            .hero-stat-row {
                gap: 20px;
                margin-top: 24px;
            }
            .hero-stat .stat-number {
                font-size: 22px;
            }
            .hero-stat .stat-label {
                font-size: 12px;
            }
            .topic-card-image {
                flex: 0 0 100%;
                min-height: 180px;
                max-height: 220px;
            }
            .topic-card-body {
                padding: 16px 16px;
            }
            .topic-card-title {
                font-size: 17px;
            }
            .topic-card-excerpt {
                font-size: 14px;
            }
            .section-title {
                font-size: 24px;
            }
            .section-desc {
                font-size: 15px;
            }
            .community-cta .section-title {
                font-size: 24px;
            }
            .community-cta {
                padding: 56px 0;
            }
            .site-footer {
                padding: 48px 0 0;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
                padding: 16px 0;
            }
            .site-footer .footer-bottom .beian-info {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            .topics-toolbar {
                flex-direction: column;
                align-items: flex-start;
            }
            .filter-chip {
                font-size: 12px;
                padding: 5px 12px;
            }
        }
        @media (max-width: 575px) {
            body {
                font-size: 15px;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .category-hero .hero-badge {
                font-size: 12px;
                padding: 4px 12px;
            }
            .topic-card-image {
                min-height: 160px;
                max-height: 200px;
            }
            .topic-meta {
                gap: 10px;
                margin-bottom: 6px;
            }
            .topic-tag {
                font-size: 11px;
                padding: 2px 8px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
            .btn-load-more {
                padding: 10px 24px;
                font-size: 14px;
            }
            .site-footer .footer-brand-desc {
                font-size: 14px;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            html {
                scroll-behavior: auto;
            }
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
            .topic-card:hover {
                transform: none;
            }
            .topic-card:hover .topic-card-image img {
                transform: none;
            }
            .btn-accent:hover,
            .btn-primary-custom:hover,
            .btn-outline-dark:hover,
            .btn-outline-light:hover {
                transform: none;
            }
        }