/* roulang page: index */
:root {
            --color-brand: #f59e0b;
            --color-brand-dark: #e8850c;
            --color-deep: #1B3A5C;
            --color-deep-dark: #152e4a;
            --color-bg: #f7f8fa;
            --color-white: #ffffff;
            --color-text: #1e293b;
            --color-text-soft: #64748b;
            --color-border: #e2e8f0;
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 12px 40px rgba(0, 0, 0, 0.13);
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

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

        input {
            font-family: inherit;
            outline: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

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

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 0.625rem;
            padding-bottom: 0.625rem;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--color-deep);
            letter-spacing: -0.02em;
            flex-shrink: 0;
            transition: opacity var(--transition-fast);
        }
        .logo-link:hover {
            opacity: 0.85;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, #f59e0b, #e8850c);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 900;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        /* Search bar in nav - visual center */
        .nav-search-wrap {
            flex: 1;
            max-width: 420px;
            min-width: 200px;
            position: relative;
        }
        .nav-search-wrap form {
            display: flex;
            align-items: center;
            background: #f1f5f9;
            border-radius: 2rem;
            border: 2px solid transparent;
            transition: all var(--transition-base);
            overflow: hidden;
        }
        .nav-search-wrap form:focus-within {
            border-color: var(--color-brand);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.08);
        }
        .nav-search-wrap input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 0.6rem 1rem;
            font-size: 0.9rem;
            color: var(--color-text);
            min-width: 0;
        }
        .nav-search-wrap input::placeholder {
            color: #94a3b8;
        }
        .nav-search-wrap button {
            background: var(--color-brand);
            color: #fff;
            padding: 0.6rem 1.1rem;
            border-radius: 0 2rem 2rem 0;
            font-size: 0.9rem;
            font-weight: 600;
            transition: all var(--transition-base);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 0.35rem;
        }
        .nav-search-wrap button:hover {
            background: var(--color-brand-dark);
            box-shadow: var(--shadow-btn);
        }

        /* Desktop nav links */
        .nav-links-desktop {
            display: none;
            align-items: center;
            gap: 0.25rem;
            flex-shrink: 0;
            flex-wrap: wrap;
        }
        @media (min-width: 1024px) {
            .nav-links-desktop {
                display: flex;
            }
        }
        .nav-links-desktop a {
            padding: 0.45rem 0.85rem;
            border-radius: 0.5rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-soft);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .nav-links-desktop a:hover {
            color: var(--color-deep);
            background: #f1f5f9;
        }
        .nav-links-desktop a.active-nav {
            color: var(--color-brand-dark);
            font-weight: 600;
            background: #fffbeb;
        }
        .nav-links-desktop a.active-nav::after {
            content: '';
            position: absolute;
            bottom: -0.625rem;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--color-brand);
            border-radius: 3px 3px 0 0;
        }

        /* Mobile nav toggle */
        .mobile-menu-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: #f1f5f9;
            color: var(--color-deep);
            font-size: 1.25rem;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }
        .mobile-menu-toggle:hover {
            background: #e2e8f0;
        }
        @media (min-width: 1024px) {
            .mobile-menu-toggle {
                display: none;
            }
        }

        /* Mobile nav panel */
        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: 0;
            right: 0;
            width: 280px;
            max-width: 85vw;
            height: 100vh;
            background: #fff;
            z-index: 2000;
            box-shadow: -4px 0 30px rgba(0, 0, 0, 0.15);
            padding: 1.5rem;
            overflow-y: auto;
            flex-direction: column;
            gap: 0.5rem;
        }
        .mobile-nav-panel.open {
            display: flex;
        }
        .mobile-nav-panel .close-btn {
            align-self: flex-end;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: #f1f5f9;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--color-text);
            transition: all var(--transition-fast);
            margin-bottom: 0.5rem;
        }
        .mobile-nav-panel .close-btn:hover {
            background: #e2e8f0;
        }
        .mobile-nav-panel a {
            display: block;
            padding: 0.7rem 1rem;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-soft);
            transition: all var(--transition-fast);
        }
        .mobile-nav-panel a:hover,
        .mobile-nav-panel a.active-nav {
            background: #fffbeb;
            color: var(--color-brand-dark);
            font-weight: 600;
        }
        .mobile-nav-panel .mobile-search {
            margin-top: 0.5rem;
            padding: 0.6rem 1rem;
            background: #f1f5f9;
            border-radius: 2rem;
            border: 1px solid var(--color-border);
            font-size: 0.9rem;
            width: 100%;
        }
        .mobile-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.4);
            z-index: 1500;
        }
        .mobile-overlay.show {
            display: block;
        }

        /* Hero Section */
        .hero-section {
            position: relative;
            background: url('assets/images/backpic/back-1.webp') center/cover no-repeat;
            min-height: 560px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(27, 58, 92, 0.88) 0%, rgba(21, 46, 74, 0.78) 40%, rgba(15, 30, 50, 0.72) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            padding: 4rem 0;
            color: #fff;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.25);
            padding: 0.4rem 1rem;
            border-radius: 2rem;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.02em;
            margin-bottom: 1.25rem;
        }
        .hero-title {
            font-size: 2.5rem;
            font-weight: 900;
            letter-spacing: -0.03em;
            line-height: 1.2;
            margin-bottom: 1rem;
        }
        .hero-title .highlight {
            color: #fbbf24;
        }
        .hero-subtitle {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            margin-bottom: 1.5rem;
            line-height: 1.7;
        }
        .hero-search-wrap {
            max-width: 500px;
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        .hero-search-wrap input {
            flex: 1;
            min-width: 200px;
            padding: 0.85rem 1.25rem;
            border-radius: 3rem;
            border: 2px solid rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(6px);
            color: #fff;
            font-size: 1rem;
            transition: all var(--transition-base);
        }
        .hero-search-wrap input::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }
        .hero-search-wrap input:focus {
            border-color: #fbbf24;
            background: rgba(255, 255, 255, 0.2);
            box-shadow: 0 0 0 4px rgba(251, 191, 36, 0.15);
        }
        .hero-search-wrap button {
            padding: 0.85rem 1.8rem;
            border-radius: 3rem;
            background: #f59e0b;
            color: #1B3A5C;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition-base);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .hero-search-wrap button:hover {
            background: #fbbf24;
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(245, 158, 11, 0.4);
        }
        @media (min-width: 768px) {
            .hero-title {
                font-size: 3.2rem;
            }
            .hero-subtitle {
                font-size: 1.2rem;
            }
            .hero-section {
                min-height: 620px;
            }
        }
        @media (min-width: 1024px) {
            .hero-title {
                font-size: 3.8rem;
            }
            .hero-section {
                min-height: 680px;
            }
        }

        /* Section common */
        .section-pad {
            padding: 3.5rem 0;
        }
        @media (min-width: 768px) {
            .section-pad {
                padding: 5rem 0;
            }
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: #e8850c;
            background: #fffbeb;
            padding: 0.3rem 0.9rem;
            border-radius: 2rem;
            margin-bottom: 0.75rem;
        }
        .section-title {
            font-size: 1.75rem;
            font-weight: 800;
            color: var(--color-deep);
            letter-spacing: -0.02em;
            margin-bottom: 0.75rem;
            line-height: 1.25;
        }
        .section-desc {
            font-size: 1rem;
            color: var(--color-text-soft);
            max-width: 660px;
            margin-bottom: 2rem;
            line-height: 1.7;
        }
        @media (min-width: 768px) {
            .section-title {
                font-size: 2.1rem;
            }
            .section-desc {
                font-size: 1.05rem;
            }
        }

        /* Stats cards */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1rem;
        }
        @media (min-width: 640px) {
            .stats-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 1.25rem;
            }
        }
        .stat-card {
            background: #fff;
            border-radius: var(--radius-xl);
            padding: 1.5rem 1.25rem;
            text-align: center;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-base);
            border: 1px solid transparent;
        }
        .stat-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
            border-color: #fde68a;
        }
        .stat-number {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--color-deep);
            letter-spacing: -0.02em;
            line-height: 1;
            margin-bottom: 0.4rem;
        }
        .stat-number .unit {
            font-size: 1rem;
            font-weight: 600;
            color: #e8850c;
        }
        .stat-label {
            font-size: 0.85rem;
            color: var(--color-text-soft);
            font-weight: 500;
        }
        @media (min-width: 768px) {
            .stat-number {
                font-size: 2.6rem;
            }
        }

        /* Advantage cards */
        .adv-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.25rem;
        }
        @media (min-width: 640px) {
            .adv-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .adv-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .adv-card {
            background: #fff;
            border-radius: var(--radius-xl);
            padding: 1.75rem 1.5rem;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-base);
            border: 1px solid transparent;
            position: relative;
            overflow: hidden;
        }
        .adv-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-xl);
            border-color: #fde68a;
        }
        .adv-card .adv-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background: #fffbeb;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: #e8850c;
            margin-bottom: 1rem;
            transition: all var(--transition-base);
        }
        .adv-card:hover .adv-icon {
            background: #fef3c7;
            transform: scale(1.06);
        }
        .adv-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-deep);
            margin-bottom: 0.5rem;
        }
        .adv-card p {
            font-size: 0.9rem;
            color: var(--color-text-soft);
            line-height: 1.6;
        }

        /* Category cards */
        .cat-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.25rem;
        }
        @media (min-width: 500px) {
            .cat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 768px) {
            .cat-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .cat-card {
            background: #fff;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-base);
            border: 1px solid transparent;
            display: flex;
            flex-direction: column;
        }
        .cat-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-xl);
            border-color: #fde68a;
        }
        .cat-card .cat-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
        }
        .cat-card .cat-body {
            padding: 1.25rem 1.25rem 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .cat-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-deep);
            margin-bottom: 0.4rem;
        }
        .cat-card p {
            font-size: 0.88rem;
            color: var(--color-text-soft);
            line-height: 1.55;
            flex: 1;
            margin-bottom: 1rem;
        }
        .cat-card .cat-link {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            font-weight: 600;
            font-size: 0.9rem;
            color: #e8850c;
            transition: all var(--transition-fast);
        }
        .cat-card .cat-link:hover {
            gap: 0.6rem;
            color: #c06b10;
        }
        @media (min-width: 768px) {
            .cat-card .cat-img {
                height: 200px;
            }
        }

        /* Brand story */
        .brand-story-block {
            background: #fff;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            display: grid;
            grid-template-columns: 1fr;
        }
        @media (min-width: 768px) {
            .brand-story-block {
                grid-template-columns: 1fr 1fr;
            }
        }
        .brand-story-img {
            width: 100%;
            height: 260px;
            object-fit: cover;
            display: block;
        }
        @media (min-width: 768px) {
            .brand-story-img {
                height: 100%;
                min-height: 360px;
            }
        }
        .brand-story-text {
            padding: 2rem 1.5rem;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .brand-story-text h2 {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--color-deep);
            margin-bottom: 0.75rem;
            letter-spacing: -0.02em;
        }
        .brand-story-text p {
            font-size: 0.95rem;
            color: var(--color-text-soft);
            line-height: 1.75;
        }
        @media (min-width: 768px) {
            .brand-story-text {
                padding: 2.5rem 2rem;
            }
            .brand-story-text h2 {
                font-size: 1.75rem;
            }
        }

        /* Service cards */
        .service-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.25rem;
        }
        @media (min-width: 640px) {
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .service-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .service-card {
            background: #fff;
            border-radius: var(--radius-xl);
            padding: 1.5rem;
            box-shadow: var(--shadow-md);
            display: flex;
            gap: 1rem;
            align-items: flex-start;
            transition: all var(--transition-base);
            border: 1px solid transparent;
        }
        .service-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
            border-color: #fde68a;
        }
        .service-icon-circle {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: #fef3c7;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #e8850c;
            font-size: 1.2rem;
        }
        .service-card h4 {
            font-weight: 700;
            color: var(--color-deep);
            margin-bottom: 0.3rem;
            font-size: 1rem;
        }
        .service-card p {
            font-size: 0.85rem;
            color: var(--color-text-soft);
            line-height: 1.55;
        }

        /* Testimonials */
        .testimonial-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.25rem;
        }
        @media (min-width: 640px) {
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .testimonial-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .testimonial-card {
            background: #fff;
            border-radius: var(--radius-xl);
            padding: 1.5rem;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-base);
            border: 1px solid transparent;
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: #fde68a;
        }
        .testimonial-card .stars {
            color: #f59e0b;
            font-size: 0.85rem;
            margin-bottom: 0.6rem;
        }
        .testimonial-card .quote {
            font-size: 0.9rem;
            color: var(--color-text-soft);
            line-height: 1.6;
            margin-bottom: 1rem;
            font-style: italic;
        }
        .testimonial-card .author {
            font-weight: 600;
            color: var(--color-deep);
            font-size: 0.85rem;
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            width: 100%;
            padding: 1.1rem 1.25rem;
            text-align: left;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--color-deep);
            background: transparent;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            transition: all var(--transition-fast);
        }
        .faq-question:hover {
            background: #fafbfc;
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: #f1f5f9;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            transition: all var(--transition-base);
            color: var(--color-text-soft);
        }
        .faq-item.open .faq-question .faq-icon {
            background: #fef3c7;
            color: #e8850c;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 1.25rem 1.25rem;
        }
        .faq-answer p {
            font-size: 0.9rem;
            color: var(--color-text-soft);
            line-height: 1.7;
        }

        /* News cards */
        .news-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.25rem;
        }
        @media (min-width: 640px) {
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .news-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .news-card {
            background: #fff;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-base);
            border: 1px solid transparent;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-xl);
            border-color: #fde68a;
        }
        .news-card .news-img {
            width: 100%;
            height: 170px;
            object-fit: cover;
            display: block;
        }
        .news-card .news-body {
            padding: 1.25rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card .news-date {
            font-size: 0.78rem;
            color: #94a3b8;
            margin-bottom: 0.4rem;
        }
        .news-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-deep);
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }
        .news-card p {
            font-size: 0.85rem;
            color: var(--color-text-soft);
            line-height: 1.55;
            flex: 1;
            margin-bottom: 1rem;
        }
        .news-card .read-more {
            font-weight: 600;
            font-size: 0.85rem;
            color: #e8850c;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            transition: all var(--transition-fast);
        }
        .news-card .read-more:hover {
            gap: 0.55rem;
            color: #c06b10;
        }
        @media (min-width: 768px) {
            .news-card .news-img {
                height: 190px;
            }
        }

        /* CTA Section */
        .cta-section {
            background: url('assets/images/backpic/back-3.webp') center/cover no-repeat;
            position: relative;
            padding: 4rem 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(27, 58, 92, 0.9) 0%, rgba(21, 46, 74, 0.85) 100%);
            z-index: 1;
        }
        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
        }
        .cta-content h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 0.75rem;
            letter-spacing: -0.02em;
        }
        .cta-content p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 550px;
            margin: 0 auto 1.5rem;
            line-height: 1.65;
        }
        .cta-btn-group {
            display: flex;
            gap: 0.75rem;
            flex-wrap: wrap;
            justify-content: center;
        }
        .btn-cta-primary {
            padding: 0.85rem 2rem;
            border-radius: 3rem;
            background: #f59e0b;
            color: #1B3A5C;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .btn-cta-primary:hover {
            background: #fbbf24;
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(245, 158, 11, 0.45);
        }
        .btn-cta-outline {
            padding: 0.85rem 2rem;
            border-radius: 3rem;
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.5);
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .btn-cta-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }
        @media (min-width: 768px) {
            .cta-content h2 {
                font-size: 2.2rem;
            }
        }

        /* Footer */
        .site-footer {
            background: var(--color-deep-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 3rem 0 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        @media (min-width: 640px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1fr;
            }
        }
        .footer-brand .footer-logo {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.5rem;
            display: inline-block;
        }
        .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.6;
            opacity: 0.7;
        }
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.75rem;
            letter-spacing: 0.02em;
        }
        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            padding: 0.25rem 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: #fbbf24;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.8rem;
            opacity: 0.6;
        }

        /* Utility */
        .text-brand {
            color: #e8850c;
        }
        .bg-soft-warm {
            background: #fffbeb;
        }
        .bg-soft-cool {
            background: #f0f4f8;
        }

        /* Focus visible */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid #f59e0b;
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* Animation for stats */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-fade-in-up {
            animation: fadeInUp 0.6s ease forwards;
        }
        .delay-100 {
            animation-delay: 0.1s;
        }
        .delay-200 {
            animation-delay: 0.2s;
        }
        .delay-300 {
            animation-delay: 0.3s;
        }

/* roulang page: category4 */
:root {
            --color-primary: #1a56db;
            --color-primary-dark: #143fa8;
            --color-primary-light: #3b82f6;
            --color-accent: #f59e0b;
            --color-accent-dark: #d97706;
            --color-bg: #f8fafc;
            --color-surface: #ffffff;
            --color-text: #1e293b;
            --color-text-weak: #64748b;
            --color-text-muted: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-success: #10b981;
            --color-warning: #f59e0b;
            --color-danger: #ef4444;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 9999px;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.12);
            --shadow-card-hover: 0 12px 36px rgba(26, 86, 219, 0.14);
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
            min-height: 100vh;
            -webkit-tap-highlight-color: transparent;
        }

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

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

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

        input {
            font-family: inherit;
            outline: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* Header */
        .site-header {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }

        .header-inner {
            display: flex;
            align-items: center;
            gap: 20px;
            width: 100%;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--color-primary);
            white-space: nowrap;
            flex-shrink: 0;
            transition: opacity var(--transition-fast);
        }
        .logo-link:hover {
            opacity: 0.85;
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            color: #fff;
            border-radius: var(--radius-md);
            font-size: 1.1rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .nav-search-wrap {
            flex: 1;
            max-width: 420px;
            min-width: 200px;
        }
        .nav-search-wrap form {
            display: flex;
            align-items: center;
            background: var(--color-bg);
            border: 1.5px solid var(--color-border);
            border-radius: var(--radius-full);
            overflow: hidden;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        .nav-search-wrap form:focus-within {
            border-color: var(--color-primary-light);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
        }
        .nav-search-wrap input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 10px 16px;
            font-size: 0.95rem;
            color: var(--color-text);
            min-width: 0;
        }
        .nav-search-wrap input::placeholder {
            color: var(--color-text-muted);
        }
        .nav-search-wrap button {
            background: var(--color-primary);
            color: #fff;
            padding: 10px 18px;
            font-size: 0.9rem;
            font-weight: 600;
            white-space: nowrap;
            border-radius: 0 var(--radius-full) var(--radius-full) 0;
            transition: background var(--transition-fast);
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .nav-search-wrap button:hover {
            background: var(--color-primary-dark);
        }

        .nav-links-desktop {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-shrink: 0;
            flex-wrap: wrap;
        }
        .nav-links-desktop a {
            display: inline-block;
            padding: 8px 13px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-weak);
            border-radius: var(--radius-sm);
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
        }
        .nav-links-desktop a:hover {
            color: var(--color-primary);
            background: rgba(26, 86, 219, 0.05);
        }
        .nav-links-desktop a.active-nav {
            color: var(--color-primary);
            background: rgba(26, 86, 219, 0.08);
            font-weight: 600;
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--color-text);
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }
        .mobile-menu-toggle:hover {
            background: var(--color-border-light);
        }

        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--color-surface);
            z-index: 999;
            padding: 20px;
            overflow-y: auto;
            flex-direction: column;
            gap: 4px;
            box-shadow: var(--shadow-lg);
        }
        .mobile-nav-panel.open {
            display: flex;
        }
        .mobile-nav-panel a {
            display: block;
            padding: 14px 16px;
            font-size: 1rem;
            font-weight: 500;
            color: var(--color-text);
            border-radius: var(--radius-md);
            transition: background var(--transition-fast), color var(--transition-fast);
        }
        .mobile-nav-panel a:hover {
            background: rgba(26, 86, 219, 0.06);
            color: var(--color-primary);
        }
        .mobile-nav-panel a.active-nav {
            background: rgba(26, 86, 219, 0.1);
            color: var(--color-primary);
            font-weight: 600;
        }

        /* Page Banner */
        .page-banner {
            position: relative;
            padding: 60px 0 56px;
            background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 40%, #1a4b8c 100%);
            overflow: hidden;
            color: #fff;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.25;
            z-index: 0;
        }
        .page-banner .container {
            position: relative;
            z-index: 1;
        }
        .page-banner .banner-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.18);
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            padding: 6px 16px;
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 16px;
            backdrop-filter: blur(6px);
        }
        .page-banner h1 {
            font-size: 2.4rem;
            font-weight: 800;
            margin: 0 0 14px;
            letter-spacing: -0.3px;
            line-height: 1.25;
        }
        .page-banner .banner-desc {
            font-size: 1.08rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            line-height: 1.7;
        }

        /* Section */
        .section {
            padding: 60px 0;
        }
        .section-sm {
            padding: 40px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-header h2 {
            font-size: 1.85rem;
            font-weight: 700;
            margin: 0 0 10px;
            color: var(--color-text);
            letter-spacing: -0.2px;
        }
        .section-header .section-subtitle {
            color: var(--color-text-weak);
            font-size: 1rem;
            max-width: 560px;
            margin: 0 auto;
        }

        /* Stats Row */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            text-align: center;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border-light);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .stat-card .stat-icon {
            font-size: 2rem;
            color: var(--color-primary);
            margin-bottom: 10px;
        }
        .stat-card .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-text);
            letter-spacing: -0.5px;
        }
        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-weak);
            margin-top: 4px;
        }

        /* Tool Cards Grid */
        .tools-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .tool-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border-light);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .tool-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
        }
        .tool-card .tool-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .tool-card .tool-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .tool-card:hover .tool-img img {
            transform: scale(1.06);
        }
        .tool-card .tool-body {
            padding: 22px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .tool-card .tool-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: var(--radius-full);
            background: rgba(26, 86, 219, 0.08);
            color: var(--color-primary);
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .tool-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin: 0 0 8px;
            color: var(--color-text);
        }
        .tool-card p {
            font-size: 0.93rem;
            color: var(--color-text-weak);
            margin: 0 0 16px;
            line-height: 1.6;
            flex: 1;
        }
        .tool-card .tool-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-primary);
            transition: gap var(--transition-fast), color var(--transition-fast);
        }
        .tool-card .tool-link:hover {
            gap: 10px;
            color: var(--color-primary-dark);
        }
        .tool-card .tool-link i {
            font-size: 0.8rem;
        }

        /* Feature Block */
        .feature-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .feature-block.reverse {
            direction: rtl;
        }
        .feature-block.reverse>* {
            direction: ltr;
        }
        .feature-block .feature-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .feature-block .feature-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }
        .feature-block .feature-content h3 {
            font-size: 1.55rem;
            font-weight: 700;
            margin: 0 0 12px;
            color: var(--color-text);
        }
        .feature-block .feature-content p {
            color: var(--color-text-weak);
            font-size: 0.98rem;
            line-height: 1.75;
            margin: 0 0 16px;
        }
        .feature-block .feature-list {
            list-style: none;
            padding: 0;
            margin: 0 0 16px;
        }
        .feature-block .feature-list li {
            padding: 6px 0;
            font-size: 0.93rem;
            color: var(--color-text-weak);
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }
        .feature-block .feature-list li i {
            color: var(--color-success);
            margin-top: 4px;
            flex-shrink: 0;
        }

        /* Steps */
        .steps-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }
        .step-item {
            text-align: center;
            position: relative;
        }
        .step-item .step-circle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-weight: 800;
            font-size: 1.3rem;
            margin-bottom: 14px;
            box-shadow: 0 6px 20px rgba(26, 86, 219, 0.3);
            position: relative;
            z-index: 2;
        }
        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin: 0 0 6px;
            color: var(--color-text);
        }
        .step-item p {
            font-size: 0.88rem;
            color: var(--color-text-weak);
            margin: 0;
            line-height: 1.5;
        }

        /* FAQ */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: box-shadow var(--transition-fast);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            background: none;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            text-align: left;
            gap: 12px;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-question i {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            transition: transform var(--transition-base), color var(--transition-fast);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--color-primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 20px;
        }
        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 20px 18px;
        }
        .faq-answer p {
            margin: 0;
            font-size: 0.93rem;
            color: var(--color-text-weak);
            line-height: 1.75;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            color: #fff;
            padding: 56px 0;
            text-align: center;
            border-radius: var(--radius-xl);
            margin: 0 20px;
        }
        .cta-section h3 {
            font-size: 1.7rem;
            font-weight: 700;
            margin: 0 0 10px;
        }
        .cta-section p {
            font-size: 1rem;
            opacity: 0.9;
            margin: 0 0 22px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            color: var(--color-primary);
            padding: 13px 30px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 1rem;
            transition: transform var(--transition-fast), box-shadow var(--transition-fast);
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.2);
        }
        .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 32px rgba(0, 0, 0, 0.28);
        }

        /* Footer */
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 50px 0 28px;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        .footer-logo {
            font-size: 1.35rem;
            font-weight: 700;
            color: #fff;
            display: inline-block;
            margin-bottom: 10px;
        }
        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.7;
            color: #94a3b8;
            margin: 0;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin: 0 0 12px;
        }
        .footer-col a {
            display: block;
            font-size: 0.88rem;
            color: #94a3b8;
            padding: 5px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: #fff;
        }
        .footer-col a i {
            margin-right: 6px;
            width: 16px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: #64748b;
        }
        .footer-bottom p {
            margin: 0;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .nav-links-desktop {
                display: none;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .nav-search-wrap {
                max-width: 300px;
            }
            .tools-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-block {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .feature-block.reverse {
                direction: ltr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .page-banner h1 {
                font-size: 1.9rem;
            }
        }

        @media (max-width: 768px) {
            .nav-search-wrap {
                max-width: 220px;
            }
            .nav-search-wrap button span {
                display: none;
            }
            .nav-search-wrap button {
                padding: 10px 14px;
            }
            .tools-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .tool-card .tool-img {
                height: 150px;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .steps-row {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .cta-section {
                margin: 0 10px;
                border-radius: var(--radius-lg);
                padding: 40px 20px;
            }
            .cta-section h3 {
                font-size: 1.4rem;
            }
            .section {
                padding: 40px 0;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .page-banner {
                padding: 40px 0 36px;
            }
            .page-banner h1 {
                font-size: 1.6rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                gap: 10px;
            }
            .logo-link {
                font-size: 1.1rem;
                gap: 6px;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.9rem;
                border-radius: var(--radius-sm);
            }
            .nav-search-wrap {
                max-width: 140px;
            }
            .nav-search-wrap input {
                padding: 8px 10px;
                font-size: 0.82rem;
            }
            .nav-search-wrap button {
                padding: 8px 10px;
                font-size: 0.8rem;
            }
            .tools-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .tool-card .tool-img {
                height: 180px;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-card {
                padding: 18px 14px;
            }
            .stat-card .stat-number {
                font-size: 1.5rem;
            }
            .steps-row {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .page-banner h1 {
                font-size: 1.35rem;
            }
            .page-banner .banner-desc {
                font-size: 0.9rem;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 14px 16px;
            }
            .faq-answer {
                padding: 0 16px;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 14px;
            }
            .container {
                padding-left: 14px;
                padding-right: 14px;
            }
        }

/* roulang page: category3 */
:root {
            --brand: #ee4d2b;
            --brand-dark: #ba2c19;
            --brand-light: #fde5d8;
            --accent: #f5a500;
            --accent-dark: #d97e00;
            --bg: #fcfaf9;
            --surface: #ffffff;
            --text: #282321;
            --text-soft: #72645c;
            --text-muted: #b3a69d;
            --border: #e0dbd7;
            --border-light: #f0eeec;
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(40, 35, 33, 0.06);
            --shadow: 0 4px 16px rgba(40, 35, 33, 0.08);
            --shadow-lg: 0 8px 32px rgba(40, 35, 33, 0.12);
            --shadow-xl: 0 16px 48px rgba(40, 35, 33, 0.16);
            --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            min-height: 100vh;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
        }

        input {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        @media (min-width: 640px) {
            .container {
                padding-left: 1.75rem;
                padding-right: 1.75rem;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        /* ===== Header ===== */
        .site-header {
            background: var(--surface);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-sm);
        }

        .header-inner {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding-top: 0.7rem;
            padding-bottom: 0.7rem;
            flex-wrap: wrap;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--brand);
            white-space: nowrap;
            flex-shrink: 0;
            letter-spacing: -0.01em;
        }
        .logo-link:hover {
            color: var(--brand-dark);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, #ee4d2b, #f1704b);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 800;
            font-size: 0.9rem;
            letter-spacing: 0;
            flex-shrink: 0;
        }

        /* Search */
        .nav-search-wrap {
            flex: 1;
            min-width: 200px;
            max-width: 420px;
            order: 3;
        }
        @media (min-width: 768px) {
            .nav-search-wrap {
                order: 2;
            }
        }
        .nav-search-wrap form {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1.5px solid var(--border);
            border-radius: 999px;
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .nav-search-wrap form:focus-within {
            border-color: var(--brand);
            box-shadow: 0 0 0 3px rgba(238, 77, 43, 0.08);
        }
        .nav-search-wrap input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 0.55rem 1rem;
            font-size: 0.9rem;
            outline: none;
            color: var(--text);
            min-width: 0;
        }
        .nav-search-wrap input::placeholder {
            color: var(--text-muted);
        }
        .nav-search-wrap button {
            background: var(--brand);
            color: #fff;
            border: none;
            padding: 0.55rem 1.1rem;
            font-size: 0.85rem;
            font-weight: 600;
            white-space: nowrap;
            transition: background var(--transition);
            border-radius: 0 999px 999px 0;
        }
        .nav-search-wrap button:hover {
            background: var(--brand-dark);
        }

        /* Desktop nav */
        .nav-links-desktop {
            display: none;
            align-items: center;
            gap: 0.15rem;
            flex-wrap: wrap;
            order: 4;
        }
        @media (min-width: 1024px) {
            .nav-links-desktop {
                display: flex;
                order: 3;
            }
        }
        .nav-links-desktop a {
            display: inline-block;
            padding: 0.45rem 0.85rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-soft);
            border-radius: 999px;
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }
        .nav-links-desktop a:hover {
            color: var(--brand);
            background: var(--brand-light);
        }
        .nav-links-desktop a.active-nav {
            color: #fff;
            background: var(--brand);
            font-weight: 600;
        }
        .nav-links-desktop a.active-nav:hover {
            background: var(--brand-dark);
            color: #fff;
        }

        /* Mobile toggle */
        .mobile-menu-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: var(--bg);
            border: 1.5px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 1.2rem;
            color: var(--text-soft);
            order: 2;
            flex-shrink: 0;
            transition: all var(--transition);
        }
        @media (min-width: 1024px) {
            .mobile-menu-toggle {
                display: none;
            }
        }
        .mobile-menu-toggle:hover {
            background: var(--brand-light);
            border-color: var(--brand);
            color: var(--brand);
        }

        /* Mobile nav panel */
        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(40, 35, 33, 0.5);
            z-index: 200;
            opacity: 0;
            transition: opacity var(--transition);
        }
        .mobile-nav-panel.open {
            display: block;
            opacity: 1;
        }
        .mobile-nav-panel-inner {
            position: absolute;
            top: 0;
            right: 0;
            width: 280px;
            max-width: 85vw;
            height: 100%;
            background: var(--surface);
            padding: 1.5rem;
            overflow-y: auto;
            box-shadow: var(--shadow-xl);
            transform: translateX(100%);
            transition: transform var(--transition);
        }
        .mobile-nav-panel.open .mobile-nav-panel-inner {
            transform: translateX(0);
        }
        .mobile-nav-close {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1.5px solid var(--border);
            background: var(--surface);
            font-size: 1rem;
            color: var(--text-soft);
            margin-bottom: 1rem;
            transition: all var(--transition);
        }
        .mobile-nav-close:hover {
            background: var(--brand-light);
            border-color: var(--brand);
            color: var(--brand);
        }
        .mobile-nav-panel-inner a {
            display: block;
            padding: 0.7rem 0.8rem;
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-soft);
            border-radius: var(--radius-sm);
            margin-bottom: 0.25rem;
            transition: all var(--transition);
        }
        .mobile-nav-panel-inner a:hover,
        .mobile-nav-panel-inner a.active-nav {
            color: var(--brand);
            background: var(--brand-light);
            font-weight: 600;
        }
        .mobile-nav-panel-inner a.active-nav {
            color: #fff;
            background: var(--brand);
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            background: linear-gradient(160deg, #2d1f1a 0%, #4a2a1e 30%, #3d1f14 60%, #1a0f0a 100%);
            padding: 3.5rem 0;
            overflow: hidden;
            isolation: isolate;
        }
        @media (min-width: 768px) {
            .page-banner {
                padding: 5rem 0;
            }
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.3;
            z-index: 0;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(45, 31, 26, 0.55) 0%, rgba(26, 15, 10, 0.8) 100%);
            z-index: 1;
        }
        .page-banner-content {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
        }
        .page-banner-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #ffc71b;
            padding: 0.35rem 1rem;
            border-radius: 999px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 1rem;
            backdrop-filter: blur(4px);
        }
        .page-banner h1 {
            font-size: 2rem;
            font-weight: 800;
            margin: 0 0 0.75rem;
            letter-spacing: -0.02em;
            line-height: 1.25;
        }
        @media (min-width: 640px) {
            .page-banner h1 {
                font-size: 2.6rem;
            }
        }
        @media (min-width: 1024px) {
            .page-banner h1 {
                font-size: 3rem;
            }
        }
        .page-banner p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 620px;
            margin: 0 auto 1.5rem;
            line-height: 1.75;
        }
        @media (min-width: 640px) {
            .page-banner p {
                font-size: 1.1rem;
            }
        }

        /* ===== Section Styles ===== */
        .section {
            padding: 3rem 0;
        }
        @media (min-width: 768px) {
            .section {
                padding: 4.5rem 0;
            }
        }
        .section-header {
            text-align: center;
            margin-bottom: 2.5rem;
        }
        @media (min-width: 768px) {
            .section-header {
                margin-bottom: 3rem;
            }
        }
        .section-header h2 {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 0.6rem;
            letter-spacing: -0.01em;
        }
        @media (min-width: 640px) {
            .section-header h2 {
                font-size: 2rem;
            }
        }
        .section-header .section-subtitle {
            font-size: 0.95rem;
            color: var(--text-soft);
            max-width: 500px;
            margin: 0 auto;
        }
        .section-divider {
            width: 48px;
            height: 3px;
            background: var(--brand);
            border-radius: 999px;
            margin: 0.75rem auto;
        }

        /* ===== Cards ===== */
        .card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--border);
        }
        .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--brand-light);
        }
        .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .card:hover .card-img-wrap img {
            transform: scale(1.04);
        }
        .card-body {
            padding: 1.25rem 1.25rem 1.5rem;
        }
        .card-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.2rem 0.65rem;
            border-radius: 999px;
            margin-bottom: 0.65rem;
            letter-spacing: 0.02em;
        }
        .card-tag-beginner {
            background: #e8f5e9;
            color: #2e7d32;
        }
        .card-tag-advanced {
            background: #fff3e0;
            color: #e65100;
        }
        .card-tag-strategy {
            background: #e3f2fd;
            color: #1565c0;
        }
        .card-tag-hot {
            background: #fce4ec;
            color: #c62828;
        }
        .card h3 {
            font-size: 1.1rem;
            font-weight: 650;
            color: var(--text);
            margin: 0 0 0.5rem;
            line-height: 1.4;
        }
        .card p {
            font-size: 0.875rem;
            color: var(--text-soft);
            margin: 0 0 0.8rem;
            line-height: 1.6;
        }
        .card-meta {
            font-size: 0.78rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        /* ===== Strategy cards (icon-based) ===== */
        .strategy-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.25rem;
        }
        @media (min-width: 540px) {
            .strategy-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .strategy-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .strategy-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 1.75rem 1.25rem;
            text-align: center;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .strategy-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-2px);
            border-color: var(--border);
        }
        .strategy-card-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 1rem;
            flex-shrink: 0;
        }
        .strategy-card-icon.orange {
            background: #fff3e0;
            color: #e65100;
        }
        .strategy-card-icon.blue {
            background: #e3f2fd;
            color: #1565c0;
        }
        .strategy-card-icon.green {
            background: #e8f5e9;
            color: #2e7d32;
        }
        .strategy-card-icon.purple {
            background: #f3e5f5;
            color: #6a1b9a;
        }
        .strategy-card h3 {
            font-size: 1.05rem;
            font-weight: 650;
            color: var(--text);
            margin: 0 0 0.4rem;
        }
        .strategy-card p {
            font-size: 0.85rem;
            color: var(--text-soft);
            margin: 0;
            line-height: 1.55;
        }

        /* ===== Article list ===== */
        .article-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.25rem;
        }
        @media (min-width: 640px) {
            .article-list {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .article-list {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        /* ===== Steps ===== */
        .steps-list {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
            counter-reset: step;
        }
        .step-item {
            display: flex;
            gap: 1rem;
            align-items: flex-start;
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .step-item:hover {
            box-shadow: var(--shadow);
        }
        .step-num {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--brand);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
        }
        .step-body h4 {
            font-size: 1.05rem;
            font-weight: 650;
            color: var(--text);
            margin: 0 0 0.35rem;
        }
        .step-body p {
            font-size: 0.89rem;
            color: var(--text-soft);
            margin: 0;
            line-height: 1.6;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(150deg, #2d1f1a 0%, #4a2a1e 50%, #3d1f14 100%);
            color: #fff;
            text-align: center;
            border-radius: var(--radius-xl);
            padding: 2.5rem 1.5rem;
            position: relative;
            overflow: hidden;
            isolation: isolate;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.2;
            z-index: 0;
        }
        .cta-section>* {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin: 0 0 0.75rem;
        }
        @media (min-width: 640px) {
            .cta-section h2 {
                font-size: 2rem;
            }
        }
        .cta-section p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 520px;
            margin: 0 auto 1.5rem;
        }
        .btn-cta {
            display: inline-block;
            background: #ffc71b;
            color: #3d1f14;
            font-weight: 700;
            padding: 0.75rem 2rem;
            border-radius: 999px;
            font-size: 1rem;
            transition: all var(--transition);
            border: none;
            letter-spacing: 0.01em;
        }
        .btn-cta:hover {
            background: #ffda46;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(255, 199, 27, 0.35);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .faq-item {
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            text-align: left;
            padding: 1.1rem 1.25rem;
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 0.75rem;
            cursor: pointer;
            line-height: 1.45;
        }
        .faq-question i {
            flex-shrink: 0;
            font-size: 0.8rem;
            color: var(--text-muted);
            transition: transform var(--transition);
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--brand);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
        }
        .faq-answer-inner {
            padding: 0 1.25rem 1.25rem;
            font-size: 0.9rem;
            color: var(--text-soft);
            line-height: 1.7;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #1a1513;
            color: #ccc3bd;
            padding: 3rem 0 0;
            margin-top: 2rem;
        }
        @media (min-width: 768px) {
            .site-footer {
                padding: 4rem 0 0;
            }
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
        }
        @media (min-width: 640px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1.4fr 1fr 1fr 1fr;
            }
        }
        .footer-brand .footer-logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            display: inline-block;
            margin-bottom: 0.75rem;
        }
        .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.7;
            color: #b3a69d;
            margin: 0;
            max-width: 340px;
        }
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 650;
            color: #fff;
            margin: 0 0 0.85rem;
            letter-spacing: 0.02em;
        }
        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: #b3a69d;
            padding: 0.3rem 0;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: #ffc71b;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 2.5rem;
            padding: 1.25rem 0;
            text-align: center;
            font-size: 0.8rem;
            color: #8a7a6f;
        }

        /* ===== Animations ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-in {
            animation: fadeInUp 0.6s ease forwards;
        }

/* roulang page: category1 */
:root {
            --color-primary: #2563eb;
            --color-primary-dark: #1d4ed8;
            --color-primary-light: #3b82f6;
            --color-accent: #0d9488;
            --color-accent-dark: #0f766e;
            --color-highlight: #f59e0b;
            --color-highlight-dark: #d97706;
            --color-surface: #ffffff;
            --color-surface-alt: #f8fafc;
            --color-surface-muted: #f1f5f9;
            --color-content: #1e293b;
            --color-content-soft: #475569;
            --color-content-muted: #64748b;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --radius-card: 1rem;
            --radius-btn: 0.625rem;
            --radius-pill: 9999px;
            --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.06), 0 4px 16px rgba(0, 0, 0, 0.04);
            --shadow-card-hover: 0 4px 12px rgba(0, 0, 0, 0.08), 0 8px 32px rgba(0, 0, 0, 0.06);
            --shadow-nav: 0 1px 3px rgba(0, 0, 0, 0.04), 0 2px 8px rgba(0, 0, 0, 0.03);
            --shadow-btn: 0 2px 8px rgba(37, 99, 235, 0.18);
            --shadow-btn-hover: 0 4px 16px rgba(37, 99, 235, 0.28);
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.7;
            color: var(--color-content);
            background-color: var(--color-surface-alt);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

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

        input {
            font-family: inherit;
        }

        :focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ========== Container ========== */
        .container {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        @media (min-width: 640px) {
            .container {
                padding-left: 1.75rem;
                padding-right: 1.75rem;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        /* ========== Header / Nav ========== */
        .site-header {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-nav);
        }
        .header-inner {
            display: flex;
            align-items: center;
            gap: 1rem;
            height: 64px;
            flex-wrap: nowrap;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--color-content);
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--transition-fast);
            letter-spacing: -0.01em;
        }
        .logo-link:hover {
            color: var(--color-primary);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            color: #fff;
            border-radius: 8px;
            font-weight: 800;
            font-size: 0.95rem;
            flex-shrink: 0;
        }
        .nav-search-wrap {
            flex: 1 1 auto;
            max-width: 420px;
            min-width: 180px;
        }
        .nav-search-wrap form {
            display: flex;
            align-items: center;
            background: var(--color-surface-muted);
            border-radius: var(--radius-pill);
            border: 1.5px solid transparent;
            transition: all var(--transition-base);
            overflow: hidden;
        }
        .nav-search-wrap form:focus-within {
            border-color: var(--color-primary);
            background: var(--color-surface);
            box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.08);
        }
        .nav-search-wrap input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 0.55rem 1rem;
            font-size: 0.9rem;
            color: var(--color-content);
            min-width: 0;
        }
        .nav-search-wrap input::placeholder {
            color: var(--color-content-muted);
        }
        .nav-search-wrap input:focus {
            outline: none;
        }
        .nav-search-wrap button {
            padding: 0.55rem 1.1rem;
            background: var(--color-primary);
            color: #fff;
            font-size: 0.85rem;
            font-weight: 600;
            white-space: nowrap;
            transition: background var(--transition-fast);
            border-radius: 0 var(--radius-pill) var(--radius-pill) 0;
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .nav-search-wrap button:hover {
            background: var(--color-primary-dark);
        }
        .nav-links-desktop {
            display: none;
            align-items: center;
            gap: 0.15rem;
            flex-shrink: 0;
            white-space: nowrap;
        }
        @media (min-width: 1024px) {
            .nav-links-desktop {
                display: flex;
            }
        }
        .nav-links-desktop a {
            padding: 0.45rem 0.75rem;
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--color-content-soft);
            border-radius: var(--radius-btn);
            transition: all var(--transition-fast);
            position: relative;
        }
        .nav-links-desktop a:hover {
            color: var(--color-primary);
            background: rgba(37, 99, 235, 0.04);
        }
        .nav-links-desktop a.active-nav {
            color: var(--color-primary);
            font-weight: 600;
            background: rgba(37, 99, 235, 0.07);
        }
        .mobile-menu-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            font-size: 1.3rem;
            color: var(--color-content-soft);
            border-radius: var(--radius-btn);
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }
        .mobile-menu-toggle:hover {
            background: var(--color-surface-muted);
            color: var(--color-primary);
        }
        @media (min-width: 1024px) {
            .mobile-menu-toggle {
                display: none;
            }
        }

        /* Mobile nav panel */
        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--color-surface);
            z-index: 999;
            padding: 1rem 1.25rem;
            flex-direction: column;
            gap: 0.25rem;
            overflow-y: auto;
            border-top: 1px solid var(--color-border);
        }
        .mobile-nav-panel.is-open {
            display: flex;
        }
        .mobile-nav-panel a {
            display: block;
            padding: 0.75rem 1rem;
            font-size: 1rem;
            font-weight: 500;
            color: var(--color-content-soft);
            border-radius: var(--radius-btn);
            transition: all var(--transition-fast);
        }
        .mobile-nav-panel a:hover,
        .mobile-nav-panel a.active-nav {
            color: var(--color-primary);
            background: rgba(37, 99, 235, 0.06);
            font-weight: 600;
        }
        @media (min-width: 1024px) {
            .mobile-nav-panel.is-open {
                display: none;
            }
        }

        /* ========== Page Banner ========== */
        .page-banner {
            position: relative;
            padding: 3rem 0;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            min-height: 260px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(30, 41, 59, 0.82) 0%, rgba(30, 41, 59, 0.65) 40%, rgba(37, 99, 235, 0.45) 100%);
            z-index: 1;
        }
        .page-banner .banner-content {
            position: relative;
            z-index: 2;
            color: #fff;
            max-width: 700px;
        }
        .page-banner .banner-content h1 {
            font-size: 2rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 0.6rem;
            line-height: 1.25;
        }
        .page-banner .banner-content p {
            font-size: 1.05rem;
            opacity: 0.9;
            line-height: 1.6;
            margin-bottom: 1.25rem;
        }
        .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            background: rgba(255, 255, 255, 0.18);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            padding: 0.4rem 1rem;
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
            font-weight: 500;
            color: #fff;
            margin-bottom: 1rem;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        @media (min-width: 640px) {
            .page-banner {
                padding: 4rem 0;
                min-height: 300px;
            }
            .page-banner .banner-content h1 {
                font-size: 2.4rem;
            }
        }
        @media (min-width: 1024px) {
            .page-banner {
                padding: 5rem 0;
                min-height: 340px;
            }
            .page-banner .banner-content h1 {
                font-size: 2.8rem;
            }
        }

        /* ========== Section Spacing ========== */
        .section-py {
            padding-top: 2.5rem;
            padding-bottom: 2.5rem;
        }
        @media (min-width: 640px) {
            .section-py {
                padding-top: 3.5rem;
                padding-bottom: 3.5rem;
            }
        }
        @media (min-width: 1024px) {
            .section-py {
                padding-top: 4.5rem;
                padding-bottom: 4.5rem;
            }
        }
        .section-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-content);
            letter-spacing: -0.02em;
            margin-bottom: 0.5rem;
        }
        .section-subtitle {
            font-size: 0.95rem;
            color: var(--color-content-muted);
            margin-bottom: 2rem;
            max-width: 600px;
        }
        @media (min-width: 640px) {
            .section-title {
                font-size: 1.75rem;
            }
        }
        @media (min-width: 1024px) {
            .section-title {
                font-size: 2rem;
            }
        }

        /* ========== Cards ========== */
        .card-base {
            background: var(--color-surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            overflow: hidden;
        }
        .card-base:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .card-stat {
            text-align: center;
            padding: 1.5rem 1rem;
        }
        .card-stat .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: -0.03em;
            line-height: 1.1;
        }
        .card-stat .stat-label {
            font-size: 0.9rem;
            color: var(--color-content-muted);
            margin-top: 0.35rem;
        }
        @media (min-width: 640px) {
            .card-stat .stat-number {
                font-size: 2.6rem;
            }
        }

        /* ========== Draw Data Table ========== */
        .draw-table-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            background: var(--color-surface);
        }
        .draw-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 640px;
            font-size: 0.9rem;
        }
        .draw-table thead th {
            background: var(--color-surface-muted);
            padding: 0.85rem 1rem;
            font-weight: 600;
            color: var(--color-content-soft);
            text-align: center;
            white-space: nowrap;
            border-bottom: 2px solid var(--color-border);
            font-size: 0.85rem;
            letter-spacing: 0.02em;
        }
        .draw-table tbody td {
            padding: 0.8rem 1rem;
            text-align: center;
            border-bottom: 1px solid var(--color-border-light);
            color: var(--color-content);
        }
        .draw-table tbody tr {
            transition: background var(--transition-fast);
        }
        .draw-table tbody tr:hover {
            background: rgba(37, 99, 235, 0.03);
        }
        .draw-table tbody tr:last-child td {
            border-bottom: none;
        }
        .draw-num {
            display: inline-block;
            width: 34px;
            height: 34px;
            line-height: 34px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            color: #fff;
            font-weight: 700;
            font-size: 0.85rem;
            margin: 0 2px;
            text-align: center;
        }
        .draw-num.accent {
            background: linear-gradient(135deg, var(--color-highlight), #fbbf24);
            color: #1e293b;
        }
        .badge-status {
            display: inline-block;
            padding: 0.25rem 0.7rem;
            border-radius: var(--radius-pill);
            font-size: 0.78rem;
            font-weight: 600;
        }
        .badge-status.live {
            background: #dcfce7;
            color: #166534;
        }
        .badge-status.done {
            background: #f1f5f9;
            color: #64748b;
        }

        /* ========== Feature Cards ========== */
        .feature-card {
            padding: 1.5rem;
            background: var(--color-surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
            height: 100%;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--color-primary-light);
        }
        .feature-card .fc-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.35rem;
            flex-shrink: 0;
        }
        .fc-icon.blue {
            background: rgba(37, 99, 235, 0.1);
            color: var(--color-primary);
        }
        .fc-icon.green {
            background: rgba(13, 148, 136, 0.1);
            color: var(--color-accent);
        }
        .fc-icon.amber {
            background: rgba(245, 158, 11, 0.1);
            color: var(--color-highlight);
        }
        .feature-card h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-content);
        }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--color-content-muted);
            line-height: 1.6;
        }

        /* ========== Timeline ========== */
        .timeline-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0;
            position: relative;
            padding-left: 2rem;
        }
        .timeline-list::before {
            content: '';
            position: absolute;
            left: 14px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--color-border);
        }
        .timeline-list li {
            position: relative;
            padding-bottom: 1.5rem;
            padding-left: 0.5rem;
        }
        .timeline-list li::before {
            content: '';
            position: absolute;
            left: -1.6rem;
            top: 6px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--color-primary);
            border: 2px solid #fff;
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.18);
            z-index: 1;
        }
        .timeline-list li:last-child {
            padding-bottom: 0;
        }
        .timeline-list .tl-time {
            font-size: 0.8rem;
            color: var(--color-content-muted);
            font-weight: 500;
            margin-bottom: 0.2rem;
        }
        .timeline-list .tl-title {
            font-weight: 600;
            color: var(--color-content);
            font-size: 0.95rem;
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .faq-item {
            background: var(--color-surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--color-primary-light);
            box-shadow: var(--shadow-card);
        }
        .faq-q {
            width: 100%;
            text-align: left;
            padding: 1.1rem 1.25rem;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-content);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            background: transparent;
            border: none;
            cursor: pointer;
            transition: color var(--transition-fast);
        }
        .faq-q:hover {
            color: var(--color-primary);
        }
        .faq-q i {
            font-size: 0.85rem;
            color: var(--color-content-muted);
            transition: transform var(--transition-base);
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
            color: var(--color-primary);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 1.25rem;
            font-size: 0.9rem;
            color: var(--color-content-soft);
            line-height: 1.7;
            border-top: 1px solid transparent;
        }
        .faq-item.open .faq-a {
            max-height: 400px;
            padding: 1rem 1.25rem;
            border-top-color: var(--color-border-light);
        }

        /* ========== CTA Banner ========== */
        .cta-banner {
            background: linear-gradient(135deg, var(--color-primary) 0%, #1d4ed8 40%, var(--color-accent) 100%);
            border-radius: var(--radius-card);
            padding: 2rem 1.5rem;
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-banner::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            pointer-events: none;
        }
        .cta-banner h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            position: relative;
            z-index: 1;
        }
        .cta-banner p {
            opacity: 0.9;
            margin-bottom: 1.25rem;
            position: relative;
            z-index: 1;
            font-size: 0.95rem;
        }
        .btn-cta-white {
            display: inline-block;
            padding: 0.7rem 2rem;
            background: #fff;
            color: var(--color-primary);
            font-weight: 600;
            border-radius: var(--radius-pill);
            font-size: 0.95rem;
            transition: all var(--transition-base);
            position: relative;
            z-index: 1;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
        }
        .btn-cta-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.18);
            background: #f8fafc;
        }
        @media (min-width: 640px) {
            .cta-banner {
                padding: 2.5rem 2rem;
            }
            .cta-banner h3 {
                font-size: 1.6rem;
            }
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #1e293b;
            color: #cbd5e1;
            margin-top: auto;
            padding-top: 3rem;
            padding-bottom: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            padding-bottom: 2rem;
        }
        @media (min-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (min-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1.8fr 1fr 1fr 1.3fr;
            }
        }
        .footer-brand .footer-logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            display: inline-block;
            margin-bottom: 0.6rem;
            letter-spacing: -0.01em;
        }
        .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.7;
            color: #94a3b8;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 0.8rem;
            letter-spacing: 0.01em;
        }
        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: #94a3b8;
            padding: 0.3rem 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: #fff;
        }
        .footer-col a i {
            width: 1.1rem;
            text-align: center;
            margin-right: 0.3rem;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 1.25rem 0;
            text-align: center;
            font-size: 0.8rem;
            color: #64748b;
        }

        /* ========== Utility ========== */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        .text-center {
            text-align: center;
        }
        .mb-1 {
            margin-bottom: 0.5rem;
        }
        .mb-2 {
            margin-bottom: 1rem;
        }
        .mb-3 {
            margin-bottom: 1.5rem;
        }
        @media (max-width: 1023px) {
            .hide-mobile-nav {
                display: none !important;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #1a56db;
            --color-primary-dark: #1347b5;
            --color-primary-light: #e8f0fe;
            --color-accent: #f59e0b;
            --color-accent-dark: #d97706;
            --color-surface: #ffffff;
            --color-surface-alt: #f8fafc;
            --color-surface-muted: #f1f5f9;
            --color-text: #1e293b;
            --color-text-soft: #64748b;
            --color-text-muted: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --radius-2xl: 1.5rem;
            --shadow-card: 0 1px 3px 0 rgba(0, 0, 0, 0.06), 0 4px 12px 0 rgba(0, 0, 0, 0.04);
            --shadow-card-hover: 0 4px 20px 0 rgba(0, 0, 0, 0.1), 0 1px 4px 0 rgba(0, 0, 0, 0.06);
            --shadow-nav: 0 2px 16px 0 rgba(0, 0, 0, 0.06);
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: #fafbfc;
            min-height: 100vh;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
        }

        input {
            font-family: inherit;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-nav);
            padding: 0 1rem;
        }

        .header-inner {
            max-width: 1280px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            gap: 1.25rem;
            height: 64px;
            flex-wrap: nowrap;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--color-primary);
            white-space: nowrap;
            flex-shrink: 0;
            transition: opacity var(--transition-fast);
        }
        .logo-link:hover {
            opacity: 0.82;
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--color-primary), #3b82f6);
            color: #fff;
            border-radius: var(--radius-md);
            font-weight: 800;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .nav-search-wrap {
            flex: 1 1 auto;
            max-width: 420px;
            min-width: 180px;
            display: flex;
            align-items: center;
        }
        .nav-search-wrap form {
            display: flex;
            width: 100%;
            background: var(--color-surface-muted);
            border-radius: 999px;
            overflow: hidden;
            border: 2px solid transparent;
            transition: all var(--transition-base);
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
        }
        .nav-search-wrap form:focus-within {
            border-color: var(--color-primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(26, 86, 219, 0.08);
        }
        .nav-search-wrap input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 0.6rem 1.1rem;
            font-size: 0.9rem;
            outline: none;
            color: var(--color-text);
            min-width: 0;
        }
        .nav-search-wrap input::placeholder {
            color: var(--color-text-muted);
        }
        .nav-search-wrap button {
            border: none;
            background: var(--color-primary);
            color: #fff;
            padding: 0.6rem 1.2rem;
            font-size: 0.88rem;
            font-weight: 600;
            white-space: nowrap;
            transition: background var(--transition-fast);
            border-radius: 0;
            display: flex;
            align-items: center;
            gap: 0.35rem;
        }
        .nav-search-wrap button:hover {
            background: var(--color-primary-dark);
        }

        .nav-links-desktop {
            display: flex;
            align-items: center;
            gap: 0.35rem;
            flex-shrink: 0;
            white-space: nowrap;
        }
        .nav-links-desktop a {
            display: inline-block;
            padding: 0.45rem 0.85rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-soft);
            border-radius: 999px;
            transition: all var(--transition-fast);
            position: relative;
        }
        .nav-links-desktop a:hover {
            color: var(--color-primary);
            background: var(--color-primary-light);
        }
        .nav-links-desktop a.active-nav {
            color: #fff;
            background: var(--color-primary);
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(26, 86, 219, 0.3);
        }
        .nav-links-desktop a.active-nav:hover {
            background: var(--color-primary-dark);
            color: #fff;
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--color-text);
            padding: 0.4rem;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
            flex-shrink: 0;
        }
        .mobile-menu-toggle:hover {
            background: var(--color-surface-muted);
        }

        .mobile-nav-panel {
            display: none;
            position: absolute;
            top: 64px;
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
            padding: 1rem;
            z-index: 99;
            flex-direction: column;
            gap: 0.3rem;
        }
        .mobile-nav-panel.open {
            display: flex;
        }
        .mobile-nav-panel a {
            display: block;
            padding: 0.7rem 1rem;
            border-radius: var(--radius-md);
            font-weight: 500;
            color: var(--color-text-soft);
            transition: all var(--transition-fast);
            font-size: 0.95rem;
        }
        .mobile-nav-panel a:hover,
        .mobile-nav-panel a.active-nav {
            background: var(--color-primary-light);
            color: var(--color-primary);
            font-weight: 600;
        }

        /* ===== Section base ===== */
        .section-block {
            padding: 3.5rem 1rem;
        }
        .section-block-sm {
            padding: 2.5rem 1rem;
        }
        .container-page {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--color-primary);
            background: var(--color-primary-light);
            padding: 0.3rem 0.85rem;
            border-radius: 999px;
            margin-bottom: 0.75rem;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 0.5rem;
            line-height: 1.3;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--color-text-soft);
            max-width: 680px;
            line-height: 1.7;
        }

        /* ===== Card base ===== */
        .card-base {
            background: #fff;
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
        }
        .card-base:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--color-surface-muted);
        }
        .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .card-base:hover .card-img-wrap img {
            transform: scale(1.04);
        }
        .card-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.25rem 0.65rem;
            border-radius: 999px;
            background: var(--color-primary-light);
            color: var(--color-primary);
        }
        .card-tag.accent {
            background: #fef3c7;
            color: #b45309;
        }

        /* ===== Stat card ===== */
        .stat-card {
            background: #fff;
            border-radius: var(--radius-xl);
            padding: 1.75rem 1.5rem;
            text-align: center;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1.1;
            letter-spacing: -0.02em;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-soft);
            margin-top: 0.4rem;
        }

        /* ===== FAQ ===== */
        .faq-item {
            border-bottom: 1px solid var(--color-border-light);
            padding: 1.2rem 0;
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .faq-item:first-child {
            border-top: 1px solid var(--color-border-light);
        }
        .faq-q {
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--color-text);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
        }
        .faq-q i {
            transition: transform var(--transition-base);
            color: var(--color-text-muted);
            font-size: 0.8rem;
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
            color: var(--color-primary);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
            color: var(--color-text-soft);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-a {
            max-height: 400px;
            padding-top: 0.7rem;
        }

        /* ===== CTA section ===== */
        .cta-section {
            background: linear-gradient(135deg, #1a3c6e 0%, #1a56db 40%, #2563eb 100%);
            border-radius: var(--radius-2xl);
            padding: 3rem 2rem;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 220px;
            height: 220px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 160px;
            height: 160px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section>* {
            position: relative;
            z-index: 1;
        }
        .cta-title {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }
        .cta-desc {
            font-size: 1rem;
            opacity: 0.88;
            max-width: 520px;
            margin: 0 auto 1.75rem;
        }
        .btn-cta-white {
            display: inline-block;
            background: #fff;
            color: var(--color-primary);
            font-weight: 700;
            padding: 0.8rem 2rem;
            border-radius: 999px;
            font-size: 1rem;
            transition: all var(--transition-base);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
        }
        .btn-cta-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.28);
            background: #f0f7ff;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #1e293b;
            color: #cbd5e1;
            padding: 3rem 1rem 1.5rem;
            margin-top: 2rem;
        }
        .footer-grid {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 2rem;
        }
        .footer-brand .footer-logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            display: inline-block;
            margin-bottom: 0.6rem;
        }
        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.65;
            color: #94a3b8;
        }
        .footer-col h4 {
            color: #fff;
            font-weight: 600;
            margin-bottom: 0.75rem;
            font-size: 0.95rem;
        }
        .footer-col a {
            display: block;
            font-size: 0.88rem;
            color: #94a3b8;
            padding: 0.25rem 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: #fff;
        }
        .footer-bottom {
            max-width: 1200px;
            margin: 2rem auto 0;
            padding-top: 1.25rem;
            border-top: 1px solid #334155;
            text-align: center;
            font-size: 0.82rem;
            color: #64748b;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .nav-links-desktop {
                gap: 0.15rem;
            }
            .nav-links-desktop a {
                padding: 0.4rem 0.6rem;
                font-size: 0.82rem;
            }
            .nav-search-wrap {
                max-width: 280px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .section-title {
                font-size: 1.7rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links-desktop {
                display: none;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .nav-search-wrap {
                max-width: 100%;
                flex: 1;
            }
            .header-inner {
                gap: 0.75rem;
                height: 56px;
            }
            .logo-link {
                font-size: 1.15rem;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.85rem;
            }
            .section-block {
                padding: 2.5rem 0.75rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-desc {
                font-size: 0.95rem;
            }
            .cta-section {
                padding: 2rem 1.25rem;
                border-radius: var(--radius-xl);
            }
            .cta-title {
                font-size: 1.4rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .stat-number {
                font-size: 2rem;
            }
        }

        @media (max-width: 520px) {
            .nav-search-wrap input {
                padding: 0.5rem 0.7rem;
                font-size: 0.82rem;
            }
            .nav-search-wrap button {
                padding: 0.5rem 0.8rem;
                font-size: 0.78rem;
            }
            .header-inner {
                gap: 0.5rem;
                height: 50px;
            }
            .logo-link {
                font-size: 1rem;
            }
            .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 0.75rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .card-base {
                border-radius: var(--radius-lg);
            }
            .stat-card {
                padding: 1.25rem 1rem;
            }
            .stat-number {
                font-size: 1.7rem;
            }
            .cta-title {
                font-size: 1.2rem;
            }
            .btn-cta-white {
                padding: 0.65rem 1.5rem;
                font-size: 0.9rem;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #1e40af;
            --primary-light: #3b82f6;
            --primary-dark: #1a3090;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --accent-light: #fef3c7;
            --surface: #ffffff;
            --bg-light: #f8fafc;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --border-light: #e2e8f0;
            --radius-xl: 12px;
            --radius-2xl: 16px;
            --radius-3xl: 20px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.06);
            --shadow-card-hover: 0 12px 36px rgba(0, 0, 0, 0.10);
            --shadow-nav: 0 2px 16px rgba(0, 0, 0, 0.05);
            --transition-base: 0.25s ease;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background-color: var(--bg-light);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

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

        input {
            font-family: inherit;
            outline: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        /* Header & Navigation */
        .site-header {
            background: var(--surface);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-nav);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: box-shadow var(--transition-base);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 12px 0;
            flex-wrap: wrap;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            white-space: nowrap;
            flex-shrink: 0;
            transition: opacity var(--transition-base);
        }
        .logo-link:hover {
            opacity: 0.85;
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-size: 1.1rem;
            font-weight: 800;
            flex-shrink: 0;
        }

        .nav-search-wrap {
            flex: 1 1 280px;
            max-width: 420px;
            min-width: 200px;
        }
        .nav-search-wrap form {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border: 2px solid var(--border-light);
            border-radius: 50px;
            overflow: hidden;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .nav-search-wrap form:focus-within {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.08);
        }
        .nav-search-wrap input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 10px 18px;
            font-size: 0.95rem;
            color: var(--text-main);
            min-width: 0;
        }
        .nav-search-wrap input::placeholder {
            color: #94a3b8;
        }
        .nav-search-wrap button {
            background: var(--primary);
            color: #fff;
            padding: 10px 18px;
            font-size: 0.9rem;
            font-weight: 600;
            white-space: nowrap;
            transition: background var(--transition-base);
            border-radius: 0 50px 50px 0;
        }
        .nav-search-wrap button:hover {
            background: var(--primary-dark);
        }

        .nav-links-desktop {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            flex-shrink: 0;
        }
        .nav-links-desktop a {
            display: inline-block;
            padding: 8px 14px;
            border-radius: 8px;
            font-size: 0.93rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: all var(--transition-base);
            white-space: nowrap;
        }
        .nav-links-desktop a:hover {
            color: var(--primary);
            background: #eff6ff;
        }
        .nav-links-desktop a.active-nav {
            color: var(--primary);
            background: #eff6ff;
            font-weight: 700;
            position: relative;
        }
        .nav-links-desktop a.active-nav::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }

        .mobile-menu-toggle {
            display: none;
            background: transparent;
            font-size: 1.5rem;
            color: var(--text-main);
            padding: 8px;
            border-radius: 8px;
            transition: background var(--transition-base);
        }
        .mobile-menu-toggle:hover {
            background: var(--bg-light);
        }

        /* Banner */
        .banner-section {
            position: relative;
            background: url('assets/images/backpic/back-2.webp') center/cover no-repeat;
            padding: 80px 0;
            min-height: 360px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .banner-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(30, 64, 175, 0.88) 0%, rgba(30, 64, 175, 0.72) 100%);
            z-index: 1;
        }
        .banner-content {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
        }
        .banner-badge {
            display: inline-block;
            background: var(--accent);
            color: #1a1a1a;
            padding: 6px 16px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }

        /* Section styles */
        .section-padding {
            padding: 64px 0;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-main);
            text-align: center;
            margin-bottom: 8px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            text-align: center;
            margin-bottom: 40px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        /* Card base */
        .card-promo {
            background: var(--surface);
            border-radius: var(--radius-2xl);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all var(--transition-base);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card-promo:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .card-promo-image {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: #e2e8f0;
        }
        .card-promo-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .card-promo:hover .card-promo-image img {
            transform: scale(1.05);
        }
        .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--accent);
            color: #1a1a1a;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 700;
            z-index: 2;
            letter-spacing: 0.3px;
        }
        .card-tag-hot {
            background: #ef4444;
            color: #fff;
        }
        .card-tag-new {
            background: #10b981;
            color: #fff;
        }
        .card-promo-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-promo-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin: 0 0 8px;
            color: var(--text-main);
        }
        .card-promo-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin: 0 0 16px;
            flex: 1;
            line-height: 1.6;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.93rem;
            transition: all var(--transition-base);
            white-space: nowrap;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-btn, 0 4px 14px rgba(30, 64, 175, 0.25));
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 20px rgba(30, 64, 175, 0.35);
            transform: translateY(-2px);
        }
        .btn-accent {
            background: var(--accent);
            color: #1a1a1a;
            box-shadow: 0 4px 14px rgba(245, 158, 11, 0.30);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            color: #fff;
            box-shadow: 0 6px 20px rgba(245, 158, 11, 0.40);
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
        }
        .btn-sm {
            padding: 7px 16px;
            font-size: 0.82rem;
        }
        .btn-lg {
            padding: 14px 30px;
            font-size: 1.05rem;
        }

        /* Step list */
        .step-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 20px;
            background: var(--surface);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
        }
        .step-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            flex-shrink: 0;
        }

        /* FAQ */
        .faq-item {
            background: var(--surface);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-card);
            margin-bottom: 12px;
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: #cbd5e1;
        }
        .faq-question {
            padding: 18px 22px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            color: var(--text-main);
            user-select: none;
            transition: color var(--transition-base);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            transition: transform var(--transition-base);
            color: var(--text-muted);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 22px 18px;
        }
        .faq-answer p {
            margin: 0;
            font-size: 0.93rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* CTA section */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-3xl);
            padding: 48px 40px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 160px;
            height: 160px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section>* {
            position: relative;
            z-index: 1;
        }

        /* Footer */
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 48px 0 20px;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            margin: 12px 0 0;
            color: #94a3b8;
        }
        .footer-logo {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 700;
            margin: 0 0 14px;
        }
        .footer-col a {
            display: block;
            font-size: 0.88rem;
            color: #94a3b8;
            padding: 5px 0;
            transition: color var(--transition-base);
        }
        .footer-col a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 16px;
            text-align: center;
            font-size: 0.82rem;
            color: #64748b;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .header-inner {
                gap: 14px;
            }
            .nav-links-desktop a {
                padding: 6px 10px;
                font-size: 0.85rem;
            }
            .nav-search-wrap {
                max-width: 300px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .banner-section {
                padding: 60px 0;
                min-height: 280px;
            }
            .section-title {
                font-size: 1.7rem;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: nowrap;
                gap: 10px;
                padding: 10px 0;
            }
            .nav-search-wrap {
                order: 3;
                flex: 1 1 100%;
                max-width: 100%;
                min-width: 0;
            }
            .nav-links-desktop {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--surface);
                flex-direction: column;
                padding: 12px 20px;
                gap: 2px;
                border-bottom: 2px solid var(--border-light);
                box-shadow: var(--shadow-card-hover);
                z-index: 999;
            }
            .nav-links-desktop.show {
                display: flex;
            }
            .nav-links-desktop a {
                width: 100%;
                padding: 10px 14px;
                border-radius: 8px;
                font-size: 0.95rem;
            }
            .mobile-menu-toggle {
                display: block;
                flex-shrink: 0;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .banner-section {
                padding: 44px 0;
                min-height: 240px;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-padding {
                padding: 40px 0;
            }
            .cta-section {
                padding: 32px 20px;
                border-radius: var(--radius-xl);
            }
            .card-promo-body {
                padding: 16px 18px 20px;
            }
        }

        @media (max-width: 520px) {
            .logo-link {
                font-size: 1.2rem;
                gap: 6px;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.9rem;
                border-radius: 8px;
            }
            .nav-search-wrap input {
                padding: 8px 12px;
                font-size: 0.85rem;
            }
            .nav-search-wrap button {
                padding: 8px 14px;
                font-size: 0.8rem;
            }
            .banner-section {
                padding: 32px 0;
                min-height: 200px;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .section-subtitle {
                font-size: 0.9rem;
                margin-bottom: 28px;
            }
            .btn-lg {
                padding: 12px 22px;
                font-size: 0.9rem;
            }
            .step-item {
                flex-direction: column;
                gap: 10px;
                padding: 16px;
            }
        }

/* roulang page: category6 */
:root {
            --color-primary: #2563eb;
            --color-primary-dark: #1d4ed8;
            --color-primary-light: #dbeafe;
            --color-accent: #f59e0b;
            --color-accent-dark: #d97706;
            --color-text: #1e293b;
            --color-text-weak: #64748b;
            --color-text-muted: #94a3b8;
            --color-bg: #f8fafc;
            --color-surface: #ffffff;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 12px -2px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 28px -6px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 20px 40px -10px rgba(0, 0, 0, 0.16);
            --transition-fast: 180ms ease;
            --transition-base: 240ms ease;
            --transition-slow: 350ms ease;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
        }

        input {
            font-family: inherit;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ========== HEADER ========== */
        .site-header {
            background: #ffffff;
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: box-shadow var(--transition-fast);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding-top: 12px;
            padding-bottom: 12px;
            flex-wrap: wrap;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.35rem;
            color: #1e293b;
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--transition-fast);
        }
        .logo-link:hover {
            color: var(--color-primary);
        }
        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 800;
            font-size: 1.1rem;
            flex-shrink: 0;
            box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
        }
        .nav-search-wrap {
            flex: 1;
            max-width: 420px;
            min-width: 200px;
        }
        .nav-search-wrap form {
            display: flex;
            align-items: center;
            background: #f1f5f9;
            border-radius: 999px;
            overflow: hidden;
            border: 2px solid transparent;
            transition: all var(--transition-fast);
        }
        .nav-search-wrap form:focus-within {
            border-color: var(--color-primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.08);
        }
        .nav-search-wrap input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 10px 16px;
            font-size: 0.9rem;
            color: #1e293b;
            outline: none;
            min-width: 0;
        }
        .nav-search-wrap input::placeholder {
            color: #94a3b8;
        }
        .nav-search-wrap button {
            background: var(--color-primary);
            color: #fff;
            border: none;
            padding: 10px 18px;
            font-size: 0.85rem;
            font-weight: 600;
            white-space: nowrap;
            transition: background var(--transition-fast);
            border-radius: 0 999px 999px 0;
        }
        .nav-search-wrap button:hover {
            background: var(--color-primary-dark);
        }
        .nav-links-desktop {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }
        .nav-links-desktop a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 0.9rem;
            font-weight: 500;
            color: #475569;
            border-radius: 999px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .nav-links-desktop a:hover {
            color: var(--color-primary);
            background: #eff6ff;
        }
        .nav-links-desktop a.active-nav {
            color: #ffffff;
            background: var(--color-primary);
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
        }
        .nav-links-desktop a.active-nav:hover {
            background: var(--color-primary-dark);
            color: #ffffff;
        }
        .mobile-menu-toggle {
            display: none;
            background: transparent;
            border: 2px solid #e2e8f0;
            border-radius: var(--radius-sm);
            padding: 8px 12px;
            font-size: 1.3rem;
            color: #475569;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }
        .mobile-menu-toggle:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: #eff6ff;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 0.85rem;
            color: #94a3b8;
            padding: 5px 0;
            align-items: center;
        }
        .breadcrumb a {
            color: #64748b;
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--color-primary);
        }
        .breadcrumb .sep {
            color: #cbd5e1;
            font-size: 0.7rem;
        }
        .breadcrumb .current {
            color: #1e293b;
            font-weight: 500;
        }

        /* ========== BANNER ========== */
        .page-banner {
            position: relative;
            background-size: cover;
            background-position: center 30%;
            background-repeat: no-repeat;
            padding: 70px 0;
            border-radius: var(--radius-xl);
            overflow: hidden;
            margin-bottom: 32px;
            box-shadow: var(--shadow-lg);
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.82) 0%, rgba(30, 41, 59, 0.7) 50%, rgba(15, 23, 42, 0.78) 100%);
            z-index: 1;
        }
        .page-banner .banner-content {
            position: relative;
            z-index: 2;
            color: #fff;
            max-width: 700px;
        }
        .page-banner .banner-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.18);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-bottom: 16px;
        }
        .page-banner h1 {
            font-size: 2.5rem;
            font-weight: 800;
            margin: 0 0 12px;
            line-height: 1.25;
            letter-spacing: -0.02em;
        }
        .page-banner .banner-desc {
            font-size: 1.1rem;
            opacity: 0.9;
            line-height: 1.7;
            margin: 0;
        }

        /* ========== SECTION TITLES ========== */
        .section-header {
            margin-bottom: 32px;
        }
        .section-header .section-label {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--color-primary);
            background: var(--color-primary-light);
            padding: 5px 14px;
            border-radius: 999px;
            margin-bottom: 10px;
        }
        .section-header h2 {
            font-size: 1.75rem;
            font-weight: 700;
            color: #1e293b;
            margin: 0;
            line-height: 1.3;
        }
        .section-header .section-subtitle {
            font-size: 0.95rem;
            color: #64748b;
            margin-top: 6px;
        }

        /* ========== NEWS LIST ========== */
        .news-list-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 20px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid #f1f5f9;
            transition: all var(--transition-base);
            cursor: pointer;
        }
        .news-list-item:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: #e2e8f0;
        }
        .news-list-item .news-thumb {
            width: 140px;
            height: 100px;
            flex-shrink: 0;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: #e2e8f0;
        }
        .news-list-item .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .news-list-item:hover .news-thumb img {
            transform: scale(1.06);
        }
        .news-list-item .news-body {
            flex: 1;
            min-width: 0;
        }
        .news-list-item .news-date {
            font-size: 0.8rem;
            color: #94a3b8;
            margin-bottom: 4px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .news-list-item .news-date i {
            font-size: 0.7rem;
        }
        .news-list-item .news-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: #1e293b;
            margin: 0 0 8px;
            line-height: 1.4;
        }
        .news-list-item .news-excerpt {
            font-size: 0.88rem;
            color: #64748b;
            line-height: 1.6;
            margin: 0 0 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 999px;
            letter-spacing: 0.02em;
        }
        .news-tag.update {
            background: #dbeafe;
            color: #1d4ed8;
        }
        .news-tag.notice {
            background: #fef3c7;
            color: #b45309;
        }
        .news-tag.report {
            background: #dcfce7;
            color: #15803d;
        }
        .news-tag.feature {
            background: #ede9fe;
            color: #6d28d9;
        }

        /* ========== FEATURED CARDS ========== */
        .featured-card {
            position: relative;
            border-radius: var(--radius-xl);
            overflow: hidden;
            height: 260px;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-base);
            cursor: pointer;
            display: flex;
            align-items: flex-end;
        }
        .featured-card:hover {
            box-shadow: var(--shadow-xl);
            transform: translateY(-3px);
        }
        .featured-card .fc-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            transition: transform var(--transition-slow);
        }
        .featured-card:hover .fc-bg {
            transform: scale(1.08);
        }
        .featured-card .fc-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 23, 42, 0.9) 0%, rgba(15, 23, 42, 0.35) 50%, rgba(15, 23, 42, 0.1) 100%);
        }
        .featured-card .fc-content {
            position: relative;
            z-index: 2;
            padding: 24px;
            color: #fff;
            width: 100%;
        }
        .featured-card .fc-tag {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 700;
            background: rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 8px;
            letter-spacing: 0.04em;
        }
        .featured-card .fc-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin: 0 0 4px;
            line-height: 1.35;
        }
        .featured-card .fc-date {
            font-size: 0.78rem;
            opacity: 0.75;
        }

        /* ========== TAG CLOUD ========== */
        .tag-cloud-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag-pill {
            display: inline-block;
            padding: 9px 20px;
            font-size: 0.88rem;
            font-weight: 500;
            border-radius: 999px;
            background: #fff;
            border: 1.5px solid #e2e8f0;
            color: #475569;
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .tag-pill:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: #eff6ff;
            box-shadow: 0 2px 8px rgba(37, 99, 235, 0.1);
        }
        .tag-pill.active-tag {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            font-weight: 600;
            box-shadow: 0 2px 10px rgba(37, 99, 235, 0.3);
        }

        /* ========== STATS ROW ========== */
        .stat-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid #f1f5f9;
            transition: all var(--transition-base);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .stat-card .stat-icon {
            font-size: 2rem;
            margin-bottom: 8px;
            display: block;
        }
        .stat-card .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: #1e293b;
            letter-spacing: -0.02em;
            line-height: 1.1;
        }
        .stat-card .stat-label {
            font-size: 0.85rem;
            color: #64748b;
            margin-top: 4px;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(135deg, #1e3a8a 0%, #1d4ed8 50%, #2563eb 100%);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            color: #fff;
            text-align: center;
            box-shadow: var(--shadow-lg);
            position: relative;
            overflow: hidden;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 200px;
            height: 200px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin: 0 0 10px;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            opacity: 0.85;
            margin: 0 0 24px;
            position: relative;
            z-index: 1;
            font-size: 1rem;
        }
        .cta-section .cta-form {
            display: flex;
            gap: 10px;
            max-width: 480px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }
        .cta-section .cta-form input {
            flex: 1;
            padding: 12px 18px;
            border-radius: 999px;
            border: none;
            font-size: 0.95rem;
            outline: none;
            min-width: 0;
        }
        .cta-section .cta-form button {
            padding: 12px 28px;
            border-radius: 999px;
            border: none;
            background: #f59e0b;
            color: #1e293b;
            font-weight: 700;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .cta-section .cta-form button:hover {
            background: #fbbf24;
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.4);
        }

        /* ========== FAQ ========== */
        .faq-item {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 22px 26px;
            box-shadow: var(--shadow-sm);
            border: 1px solid #f1f5f9;
            transition: all var(--transition-base);
            cursor: pointer;
            margin-bottom: 12px;
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
            border-color: #e2e8f0;
        }
        .faq-item .faq-question {
            font-weight: 700;
            font-size: 1.05rem;
            color: #1e293b;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }
        .faq-item .faq-question .faq-icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: #eff6ff;
            color: #2563eb;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            transition: all var(--transition-fast);
        }
        .faq-item .faq-answer {
            margin-top: 14px;
            font-size: 0.92rem;
            color: #64748b;
            line-height: 1.75;
            display: none;
            padding-top: 14px;
            border-top: 1px solid #f1f5f9;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-icon {
            background: #2563eb;
            color: #fff;
            transform: rotate(45deg);
        }

        /* ========== RELATED SERVICES ========== */
        .related-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 22px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid #f1f5f9;
            transition: all var(--transition-base);
            cursor: pointer;
            display: block;
        }
        .related-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: #e2e8f0;
        }
        .related-card .rc-icon {
            font-size: 2.4rem;
            margin-bottom: 10px;
            display: block;
        }
        .related-card .rc-title {
            font-weight: 700;
            font-size: 1rem;
            color: #1e293b;
        }
        .related-card .rc-desc {
            font-size: 0.82rem;
            color: #94a3b8;
            margin-top: 4px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #1e293b;
            color: #cbd5e1;
            padding: 48px 0 24px;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand .footer-logo {
            font-size: 1.35rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            display: inline-block;
            transition: color var(--transition-fast);
        }
        .footer-brand .footer-logo:hover {
            color: #60a5fa;
        }
        .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.7;
            color: #94a3b8;
            margin: 0;
        }
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #e2e8f0;
            margin: 0 0 14px;
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }
        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: #94a3b8;
            padding: 5px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: #fff;
        }
        .footer-col a i {
            width: 20px;
            text-align: center;
            margin-right: 4px;
            font-size: 0.8rem;
        }
        .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 18px;
            text-align: center;
            font-size: 0.8rem;
            color: #64748b;
        }
        .footer-bottom p {
            margin: 0;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .nav-search-wrap {
                max-width: 300px;
            }
            .nav-links-desktop a {
                padding: 6px 10px;
                font-size: 0.82rem;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .page-banner {
                padding: 50px 0;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
                gap: 10px;
                padding-top: 10px;
                padding-bottom: 10px;
            }
            .logo-link {
                font-size: 1.15rem;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 0.95rem;
            }
            .nav-search-wrap {
                order: 3;
                flex: 1 1 100%;
                max-width: 100%;
            }
            .nav-links-desktop {
                display: none;
                order: 4;
                flex: 1 1 100%;
                flex-direction: column;
                gap: 2px;
                background: #fff;
                border-radius: var(--radius-md);
                padding: 8px;
                box-shadow: var(--shadow-md);
                border: 1px solid #e2e8f0;
            }
            .nav-links-desktop.mobile-open {
                display: flex;
            }
            .nav-links-desktop a {
                padding: 10px 16px;
                border-radius: var(--radius-sm);
                font-size: 0.9rem;
            }
            .mobile-menu-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .page-banner {
                padding: 40px 20px;
                border-radius: var(--radius-lg);
            }
            .page-banner h1 {
                font-size: 1.6rem;
            }
            .page-banner .banner-desc {
                font-size: 0.9rem;
            }
            .news-list-item {
                flex-direction: column;
                gap: 14px;
                padding: 16px;
            }
            .news-list-item .news-thumb {
                width: 100%;
                height: 180px;
            }
            .featured-card {
                height: 200px;
            }
            .featured-card .fc-title {
                font-size: 1rem;
            }
            .stat-card .stat-number {
                font-size: 1.6rem;
            }
            .cta-section {
                padding: 36px 20px;
                border-radius: var(--radius-lg);
            }
            .cta-section .cta-form {
                flex-direction: column;
                gap: 10px;
            }
            .cta-section .cta-form button {
                width: 100%;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .faq-item {
                padding: 16px 18px;
            }
            .faq-item .faq-question {
                font-size: 0.95rem;
            }
        }
        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 1.35rem;
            }
            .page-banner {
                padding: 30px 16px;
                border-radius: var(--radius-md);
                margin-bottom: 20px;
            }
            .container {
                padding: 0 12px;
            }
            .news-list-item .news-thumb {
                height: 140px;
            }
            .news-list-item .news-title {
                font-size: 0.95rem;
            }
            .news-list-item .news-excerpt {
                font-size: 0.8rem;
            }
            .tag-pill {
                padding: 7px 14px;
                font-size: 0.78rem;
            }
            .featured-card {
                height: 170px;
            }
            .featured-card .fc-content {
                padding: 16px;
            }
            .featured-card .fc-title {
                font-size: 0.9rem;
            }
            .stat-card {
                padding: 20px 16px;
            }
            .stat-card .stat-number {
                font-size: 1.4rem;
            }
            .section-header h2 {
                font-size: 1.2rem;
            }
            .cta-section h3 {
                font-size: 1.25rem;
            }
            .faq-item .faq-question {
                font-size: 0.88rem;
            }
            .footer-bottom {
                font-size: 0.72rem;
            }
        }

        /* Utility animations */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-fade-in-up {
            animation: fadeInUp 0.5s ease forwards;
        }