/* roulang page: index */
:root {
            --color-primary: #1B3A5C;
            --color-primary-light: #2A5580;
            --color-primary-dark: #0F2640;
            --color-accent: #C8963E;
            --color-accent-hover: #B08432;
            --color-accent-light: #E8D5B0;
            --color-bg: #f7f5f0;
            --color-bg-alt: #EDE9E0;
            --color-surface: #ffffff;
            --color-text: #1a1a1a;
            --color-text-secondary: #5a5a5a;
            --color-text-muted: #7a7a7a;
            --color-border: #e0dcd4;
            --color-border-light: #ece8e0;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.12);
            --font-heading: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --container-max: 1200px;
            --nav-height: 72px;
        }

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

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

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            min-height: 100vh;
        }

        a {
            text-decoration: none;
            color: var(--color-primary);
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-primary-light);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 2px;
        }

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

        button:focus-visible,
        .btn:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text);
            margin-top: 0;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.6rem;
            color: var(--color-primary-dark);
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--color-text-secondary);
            margin-bottom: 2.5rem;
            font-weight: 400;
            max-width: 600px;
        }
        .section-title-group {
            text-align: center;
            margin-bottom: 3rem;
        }
        .section-title-group .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        .divider-accent {
            width: 48px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 2px;
            margin: 0.6rem auto 1.2rem;
        }
        .divider-accent.left {
            margin-left: 0;
            margin-right: auto;
        }

        /* ========== NAVIGATION ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .site-header .navbar {
            width: 100%;
            padding: 0 1.5rem;
            height: 100%;
            display: flex;
            align-items: center;
        }
        .navbar-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--color-primary-dark) !important;
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }
        .navbar-brand .brand-icon {
            width: 36px;
            height: 36px;
            background: var(--color-primary);
            color: #fff;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 700;
            flex-shrink: 0;
        }
        .navbar-nav .nav-link {
            font-weight: 500;
            color: var(--color-text) !important;
            padding: 0.5rem 1rem !important;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            font-size: 0.95rem;
            white-space: nowrap;
        }
        .navbar-nav .nav-link:hover {
            color: var(--color-primary) !important;
            background: rgba(27, 58, 92, 0.05);
        }
        .navbar-nav .nav-link.active {
            color: var(--color-primary) !important;
            background: rgba(27, 58, 92, 0.08);
            font-weight: 600;
        }
        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: var(--color-accent);
            color: #fff !important;
            padding: 0.55rem 1.4rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-base);
            white-space: nowrap;
            border: none;
            cursor: pointer;
            text-decoration: none !important;
        }
        .nav-cta-btn:hover {
            background: var(--color-accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(200, 150, 62, 0.35);
            color: #fff !important;
        }
        .navbar-toggler {
            border: none;
            padding: 0.4rem 0.6rem;
            font-size: 1.3rem;
            color: var(--color-text);
            box-shadow: none !important;
        }
        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }
        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: #fff;
                border-radius: var(--radius-md);
                box-shadow: var(--shadow-lg);
                padding: 1rem;
                margin-top: 0.5rem;
                border: 1px solid var(--color-border-light);
            }
            .navbar-nav .nav-link {
                padding: 0.7rem 1rem !important;
                border-radius: var(--radius-sm);
            }
            .nav-cta-btn {
                margin-top: 0.5rem;
                width: 100%;
                justify-content: center;
            }
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            min-height: 580px;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, #0F2640 0%, #1B3A5C 40%, #1e4268 100%);
            overflow: hidden;
        }
        .hero-bg-img {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            z-index: 0;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(200, 150, 62, 0.12) 0%, transparent 60%),
                        linear-gradient(180deg, rgba(15, 38, 64, 0.55) 0%, rgba(27, 58, 92, 0.7) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            padding: 3rem 0;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.22);
            color: #f0e6d3;
            padding: 0.4rem 1.1rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.03em;
            margin-bottom: 1.2rem;
            backdrop-filter: blur(4px);
        }
        .hero-title {
            font-size: 3rem;
            font-weight: 800;
            color: #ffffff;
            line-height: 1.25;
            margin-bottom: 1rem;
            letter-spacing: -0.015em;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
        }
        .hero-title .highlight {
            color: var(--color-accent);
            position: relative;
        }
        .hero-desc {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            margin-bottom: 2rem;
            max-width: 600px;
            text-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
        }
        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
        }
        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--color-accent);
            color: #fff;
            padding: 0.7rem 1.8rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition-base);
            text-decoration: none !important;
        }
        .btn-hero-primary:hover {
            background: #d4a44a;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(200, 150, 62, 0.4);
            color: #fff;
        }
        .btn-hero-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: transparent;
            color: #fff;
            padding: 0.7rem 1.8rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid rgba(255, 255, 255, 0.5);
            cursor: pointer;
            transition: all var(--transition-base);
            text-decoration: none !important;
        }
        .btn-hero-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            transform: translateY(-2px);
        }
        @media (max-width: 767.98px) {
            .hero-section {
                min-height: 440px;
            }
            .hero-title {
                font-size: 1.9rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
            .hero-btns {
                flex-direction: column;
            }
            .btn-hero-primary,
            .btn-hero-outline {
                width: 100%;
                justify-content: center;
            }
        }

        /* ========== SECTIONS ========== */
        .section-padding {
            padding: 4.5rem 0;
        }
        @media (max-width: 767.98px) {
            .section-padding {
                padding: 2.8rem 0;
            }
        }

        /* ========== STATS ========== */
        .stats-section {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
        }
        .stat-card {
            text-align: center;
            padding: 1.5rem 1rem;
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
        }
        .stat-card:hover {
            background: var(--color-bg);
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1;
            margin-bottom: 0.4rem;
            font-family: var(--font-heading);
        }
        .stat-number .stat-suffix {
            color: var(--color-accent);
            font-size: 1.6rem;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            font-weight: 500;
        }

        /* ========== FEATURE CARDS ========== */
        .feature-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 2rem 1.6rem;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            height: 100%;
            display: flex;
            flex-direction: column;
            position: relative;
            overflow: hidden;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-accent-light);
        }
        .feature-card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 1.2rem;
            flex-shrink: 0;
        }
        .feature-card .card-icon.blue {
            background: rgba(27, 58, 92, 0.1);
            color: var(--color-primary);
        }
        .feature-card .card-icon.gold {
            background: rgba(200, 150, 62, 0.12);
            color: var(--color-accent);
        }
        .feature-card .card-icon.teal {
            background: rgba(42, 130, 130, 0.1);
            color: #2a8282;
        }
        .feature-card h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .feature-card p {
            color: var(--color-text-secondary);
            font-size: 0.93rem;
            margin-bottom: 0;
            flex-grow: 1;
        }
        .feature-card .card-link {
            margin-top: 1rem;
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            color: var(--color-accent);
            transition: gap var(--transition-fast);
        }
        .feature-card .card-link:hover {
            gap: 0.6rem;
            color: var(--color-accent-hover);
        }
        .feature-card-cover {
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .feature-card-cover:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .feature-card-cover .card-img-wrap {
            height: 200px;
            overflow: hidden;
            flex-shrink: 0;
        }
        .feature-card-cover .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .feature-card-cover:hover .card-img-wrap img {
            transform: scale(1.05);
        }
        .feature-card-cover .card-body-custom {
            padding: 1.4rem 1.4rem 1.2rem;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }
        .feature-card-cover h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
        }
        .feature-card-cover p {
            color: var(--color-text-secondary);
            font-size: 0.9rem;
            margin-bottom: 0;
            flex-grow: 1;
        }

        /* ========== CMS LIST ========== */
        .cms-list-section {
            background: var(--color-bg-alt);
        }
        .cms-list-item {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 1rem 1.2rem;
            background: var(--color-surface);
            border-radius: var(--radius-md);
            margin-bottom: 0.6rem;
            border: 1px solid transparent;
            transition: all var(--transition-fast);
            text-decoration: none !important;
            color: var(--color-text) !important;
        }
        .cms-list-item:hover {
            border-color: var(--color-accent-light);
            box-shadow: var(--shadow-md);
            transform: translateX(3px);
        }
        .cms-list-meta {
            flex-shrink: 0;
            background: var(--color-primary);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.3rem 0.7rem;
            border-radius: 50px;
            white-space: nowrap;
        }
        .cms-list-title {
            font-weight: 600;
            font-size: 0.98rem;
            flex-grow: 1;
            line-height: 1.4;
        }
        .cms-list-date {
            flex-shrink: 0;
            color: var(--color-text-muted);
            font-size: 0.82rem;
            white-space: nowrap;
        }
        .cms-empty-msg {
            text-align: center;
            color: var(--color-text-muted);
            padding: 3rem 1rem;
            font-size: 1rem;
        }

        /* ========== HIGHLIGHT CARDS ========== */
        .highlight-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .highlight-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .highlight-card .hl-img-wrap {
            height: 220px;
            overflow: hidden;
            flex-shrink: 0;
        }
        .highlight-card .hl-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .highlight-card:hover .hl-img-wrap img {
            transform: scale(1.06);
        }
        .highlight-card .hl-body {
            padding: 1.4rem;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }
        .highlight-card .hl-tag {
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--color-accent);
            text-transform: uppercase;
            letter-spacing: 0.04em;
            margin-bottom: 0.4rem;
        }
        .highlight-card h4 {
            font-size: 1.08rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
        }
        .highlight-card p {
            color: var(--color-text-secondary);
            font-size: 0.9rem;
            flex-grow: 1;
        }

        /* ========== TRUST SECTION ========== */
        .trust-section {
            background: var(--color-surface);
        }
        .trust-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 2rem;
            align-items: center;
        }
        .trust-item {
            text-align: center;
            padding: 1.2rem;
            flex: 0 0 auto;
            min-width: 120px;
        }
        .trust-item .trust-icon {
            font-size: 2.2rem;
            color: var(--color-primary-light);
            margin-bottom: 0.5rem;
        }
        .trust-item .trust-label {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-text);
        }
        .trust-item .trust-sub {
            font-size: 0.78rem;
            color: var(--color-text-muted);
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: var(--color-bg);
        }
        .accordion-faq .accordion-item {
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md) !important;
            margin-bottom: 0.7rem;
            overflow: hidden;
            background: var(--color-surface);
            transition: all var(--transition-fast);
        }
        .accordion-faq .accordion-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .accordion-faq .accordion-button {
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text);
            background: transparent;
            box-shadow: none !important;
            padding: 1.1rem 1.3rem;
            border-radius: var(--radius-md) !important;
            transition: all var(--transition-fast);
        }
        .accordion-faq .accordion-button:not(.collapsed) {
            color: var(--color-primary);
            background: rgba(27, 58, 92, 0.03);
        }
        .accordion-faq .accordion-button::after {
            background-size: 1rem;
            transition: transform var(--transition-base);
        }
        .accordion-faq .accordion-body {
            padding: 0.6rem 1.3rem 1.3rem;
            color: var(--color-text-secondary);
            font-size: 0.93rem;
            line-height: 1.7;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-primary-light) 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 3.5rem 1rem;
        }
        .cta-content h2 {
            color: #fff;
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
        }
        .cta-content p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.05rem;
            margin-bottom: 1.8rem;
            max-width: 550px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-cta-large {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--color-accent);
            color: #fff;
            padding: 0.75rem 2.2rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition-base);
            text-decoration: none !important;
        }
        .btn-cta-large:hover {
            background: #d4a44a;
            transform: translateY(-2px);
            box-shadow: 0 10px 32px rgba(200, 150, 62, 0.45);
            color: #fff;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-primary-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 3rem 0 1.5rem;
        }
        .site-footer .footer-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.2rem;
            color: #fff;
            margin-bottom: 0.6rem;
            display: inline-block;
        }
        .site-footer .footer-desc {
            font-size: 0.88rem;
            line-height: 1.6;
            max-width: 360px;
            color: rgba(255, 255, 255, 0.6);
        }
        .site-footer .footer-heading {
            font-weight: 600;
            font-size: 0.95rem;
            color: #fff;
            margin-bottom: 0.8rem;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 0.4rem;
        }
        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.88rem;
            transition: color var(--transition-fast);
        }
        .site-footer ul li a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            margin-top: 2rem;
            padding-top: 1.2rem;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
        }

        /* ========== UTILITY ========== */
        .text-accent {
            color: var(--color-accent) !important;
        }
        .bg-surface {
            background: var(--color-surface);
        }
        .bg-alt {
            background: var(--color-bg-alt);
        }

        @media (max-width: 767.98px) {
            .section-title {
                font-size: 1.55rem;
            }
            .stat-number {
                font-size: 2rem;
            }
            .feature-card,
            .feature-card-cover,
            .highlight-card {
                margin-bottom: 1rem;
            }
            .cms-list-item {
                flex-wrap: wrap;
                gap: 0.5rem;
            }
            .cms-list-title {
                width: 100%;
                order: 3;
            }
            .trust-grid {
                gap: 1rem;
            }
            .trust-item {
                min-width: 80px;
                padding: 0.8rem;
            }
            .cta-content h2 {
                font-size: 1.5rem;
            }
        }
        @media (min-width: 768px) and (max-width: 991.98px) {
            .hero-title {
                font-size: 2.2rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #1a3c5e;
            --color-primary-dark: #0f2a45;
            --color-primary-light: #2a5a8a;
            --color-accent: #c8963e;
            --color-accent-light: #e0b865;
            --color-accent-dark: #a0782e;
            --color-bg: #f8f9fb;
            --color-bg-alt: #edf2f7;
            --color-bg-dark: #1a2332;
            --color-surface: #ffffff;
            --color-text: #2d3748;
            --color-text-light: #5a6c7d;
            --color-text-muted: #8899aa;
            --color-border: #e2e8f0;
            --color-border-light: #f0f3f7;
            --color-success: #38a169;
            --color-warning: #d69e2e;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 14px 48px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 22px 64px rgba(0, 0, 0, 0.13);
            --shadow-accent: 0 8px 28px rgba(200, 150, 62, 0.22);
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
            --font-heading: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', -apple-system, sans-serif;
            --font-body: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', -apple-system, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-body);
            font-weight: 400;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            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;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-heading);
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-primary-dark);
            margin-top: 0;
        }

        .container,
        .container-fluid {
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== HEADER & NAV ===== */
        .site-header {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-smooth);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }

        .navbar {
            padding: 14px 0;
        }

        .navbar-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--color-primary) !important;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 0.02em;
            transition: color var(--transition-fast);
        }

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

        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 1.1rem;
            font-weight: 700;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(26, 60, 94, 0.25);
        }

        .navbar-nav {
            gap: 6px;
        }

        .nav-link {
            padding: 10px 18px !important;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.98rem;
            color: var(--color-text-light) !important;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

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

        .nav-link.active {
            color: var(--color-primary) !important;
            background: rgba(26, 60, 94, 0.07);
            font-weight: 600;
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 11px 24px;
            background: var(--color-accent);
            color: #fff !important;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.01em;
            transition: all var(--transition-smooth);
            box-shadow: 0 4px 16px rgba(200, 150, 62, 0.30);
            white-space: nowrap;
        }

        .nav-cta-btn:hover {
            background: var(--color-accent-dark);
            box-shadow: 0 8px 28px rgba(200, 150, 62, 0.42);
            transform: translateY(-2px);
            color: #fff !important;
        }

        .nav-cta-btn:active {
            transform: translateY(0);
            box-shadow: 0 3px 10px rgba(200, 150, 62, 0.28);
        }

        .navbar-toggler {
            border: 1.5px solid var(--color-border);
            border-radius: var(--radius-sm);
            padding: 8px 12px;
            color: var(--color-primary);
            transition: all var(--transition-fast);
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(26, 60, 94, 0.12);
            outline: none;
        }

        .navbar-toggler:hover {
            border-color: var(--color-primary);
            background: rgba(26, 60, 94, 0.03);
        }

        /* ===== SECTION BASICS ===== */
        .section-block {
            padding: 72px 0;
        }

        .section-block.alt-bg {
            background: var(--color-bg-alt);
        }

        .section-block.dark-bg {
            background: var(--color-bg-dark);
            color: #e8ecf1;
        }

        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--color-accent);
            margin-bottom: 12px;
            background: rgba(200, 150, 62, 0.08);
            padding: 6px 16px;
            border-radius: 50px;
        }

        .section-title {
            font-size: 2.4rem;
            font-weight: 700;
            margin-bottom: 18px;
            color: var(--color-primary-dark);
            letter-spacing: 0.01em;
        }

        .section-subtitle {
            font-size: 1.08rem;
            color: var(--color-text-light);
            max-width: 680px;
            margin: 0 auto 36px;
            line-height: 1.75;
        }

        .dark-bg .section-title {
            color: #ffffff;
        }

        .dark-bg .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        .text-center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== HERO ===== */
        .hero-category {
            position: relative;
            padding: 100px 0 110px;
            background: var(--color-primary-dark);
            overflow: hidden;
            z-index: 1;
        }

        .hero-category .hero-bg-img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.28;
            z-index: -1;
            filter: brightness(0.7) saturate(0.9);
        }

        .hero-category .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg,
                    rgba(15, 42, 69, 0.82) 0%,
                    rgba(26, 60, 94, 0.70) 40%,
                    rgba(26, 60, 94, 0.88) 100%);
            z-index: -1;
        }

        .hero-category .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 780px;
            margin: 0 auto;
        }

        .hero-category .hero-badge {
            display: inline-block;
            background: rgba(200, 150, 62, 0.18);
            color: var(--color-accent-light);
            border: 1px solid rgba(200, 150, 62, 0.35);
            padding: 7px 20px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            margin-bottom: 22px;
        }

        .hero-category h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 20px;
            letter-spacing: 0.02em;
            line-height: 1.25;
        }

        .hero-category .hero-desc {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 36px;
            line-height: 1.8;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-category .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 15px 36px;
            background: var(--color-accent);
            color: #fff;
            font-weight: 700;
            font-size: 1.05rem;
            border-radius: 50px;
            border: none;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-accent);
            letter-spacing: 0.02em;
        }

        .btn-hero-primary:hover {
            background: var(--color-accent-light);
            transform: translateY(-3px);
            box-shadow: 0 14px 38px rgba(200, 150, 62, 0.48);
            color: #fff;
        }

        .btn-hero-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 15px 36px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 1.05rem;
            border-radius: 50px;
            border: 2px solid rgba(255, 255, 255, 0.45);
            transition: all var(--transition-smooth);
            letter-spacing: 0.02em;
        }

        .btn-hero-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.75);
            color: #fff;
            transform: translateY(-3px);
        }

        /* ===== FEATURE CARDS ===== */
        .feature-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 36px 30px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
            height: 100%;
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
            border-radius: 4px 4px 0 0;
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }

        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
            border-color: transparent;
        }

        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-card .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 20px;
            background: rgba(26, 60, 94, 0.06);
            color: var(--color-primary);
            transition: all var(--transition-smooth);
        }

        .feature-card:hover .feature-icon {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 8px 22px rgba(26, 60, 94, 0.28);
        }

        .feature-card h3 {
            font-size: 1.22rem;
            margin-bottom: 10px;
            color: var(--color-primary-dark);
        }

        .feature-card p {
            color: var(--color-text-light);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== INSIGHT CARDS ===== */
        .insight-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .insight-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-5px);
            border-color: transparent;
        }

        .insight-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--color-bg-alt);
        }

        .insight-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        .insight-card .card-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--color-accent);
            color: #fff;
            padding: 5px 14px;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            z-index: 2;
        }

        .insight-card .card-body-custom {
            padding: 22px 20px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .insight-card .card-body-custom h3 {
            font-size: 1.08rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-primary-dark);
            line-height: 1.45;
        }

        .insight-card .card-body-custom p {
            color: var(--color-text-light);
            font-size: 0.9rem;
            line-height: 1.65;
            margin-bottom: 16px;
            flex: 1;
        }

        .insight-card .card-meta {
            font-size: 0.82rem;
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .insight-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--color-primary);
            font-weight: 600;
            font-size: 0.92rem;
            transition: gap var(--transition-fast);
        }

        .insight-card .card-link:hover {
            color: var(--color-primary-light);
            gap: 10px;
        }

        /* ===== STATS BAR ===== */
        .stats-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            justify-content: center;
            text-align: center;
        }

        .stat-item {
            min-width: 120px;
        }

        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1.1;
            letter-spacing: -0.02em;
        }

        .stat-label {
            font-size: 0.92rem;
            color: var(--color-text-light);
            margin-top: 6px;
            font-weight: 500;
        }

        .dark-bg .stat-number {
            color: var(--color-accent-light);
        }

        .dark-bg .stat-label {
            color: rgba(255, 255, 255, 0.65);
        }

        /* ===== SCENARIO CARDS ===== */
        .scenario-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 32px 26px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
            height: 100%;
            text-align: center;
        }

        .scenario-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--color-accent);
        }

        .scenario-card .scenario-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 18px;
            background: rgba(200, 150, 62, 0.08);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--color-accent);
            transition: all var(--transition-smooth);
        }

        .scenario-card:hover .scenario-icon {
            background: var(--color-accent);
            color: #fff;
            box-shadow: 0 10px 28px rgba(200, 150, 62, 0.3);
        }

        .scenario-card h4 {
            font-size: 1.05rem;
            margin-bottom: 8px;
            color: var(--color-primary-dark);
        }

        .scenario-card p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.65;
            margin: 0;
        }

        /* ===== PROCESS / TIMELINE ===== */
        .process-steps {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            justify-content: center;
            position: relative;
        }

        .process-step {
            flex: 1 1 200px;
            max-width: 260px;
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .process-step .step-number {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-weight: 800;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 6px 20px rgba(26, 60, 94, 0.3);
            position: relative;
            z-index: 2;
        }

        .process-step h4 {
            font-size: 1.05rem;
            margin-bottom: 6px;
            color: var(--color-primary-dark);
        }

        .process-step p {
            font-size: 0.88rem;
            color: var(--color-text-light);
            line-height: 1.6;
            margin: 0;
        }

        .process-connector {
            display: none;
        }

        @media (min-width: 768px) {
            .process-steps {
                gap: 0;
            }

            .process-step {
                padding: 0 12px;
            }

            .process-step::after {
                content: '';
                position: absolute;
                top: 26px;
                left: 50%;
                width: 100%;
                height: 2px;
                background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 50%, var(--color-primary) 100%);
                z-index: 0;
                opacity: 0.3;
            }

            .process-step:last-child::after {
                display: none;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-sm);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }

        .faq-question {
            padding: 20px 24px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-weight: 600;
            font-size: 1.02rem;
            color: var(--color-primary-dark);
            transition: color var(--transition-fast);
            user-select: none;
        }

        .faq-question:hover {
            color: var(--color-primary);
        }

        .faq-question .faq-toggle-icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--color-bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-smooth);
            font-size: 0.75rem;
            color: var(--color-text-light);
        }

        .faq-item.open .faq-question .faq-toggle-icon {
            background: var(--color-primary);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease;
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 22px;
        }

        .faq-answer p {
            color: var(--color-text-light);
            font-size: 0.95rem;
            line-height: 1.75;
            margin: 0;
        }

        /* ===== CTA SECTION ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(160deg, var(--color-primary-dark) 0%, #0f2640 40%, var(--color-primary) 100%);
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(200, 150, 62, 0.13) 0%, transparent 70%);
            border-radius: 50%;
            top: -120px;
            right: -150px;
            z-index: 0;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(200, 150, 62, 0.10) 0%, transparent 70%);
            border-radius: 50%;
            bottom: -100px;
            left: -120px;
            z-index: 0;
        }

        .cta-section .cta-content {
            position: relative;
            z-index: 1;
            max-width: 650px;
            margin: 0 auto;
        }

        .cta-section h2 {
            font-size: 2.5rem;
            color: #fff;
            margin-bottom: 16px;
            font-weight: 800;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.08rem;
            margin-bottom: 32px;
            line-height: 1.7;
        }

        .btn-cta-large {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 42px;
            background: var(--color-accent);
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            border-radius: 50px;
            border: none;
            transition: all var(--transition-smooth);
            box-shadow: 0 10px 34px rgba(200, 150, 62, 0.38);
            letter-spacing: 0.02em;
        }

        .btn-cta-large:hover {
            background: var(--color-accent-light);
            transform: translateY(-4px);
            box-shadow: 0 18px 48px rgba(200, 150, 62, 0.52);
            color: #fff;
        }

        .btn-cta-large:active {
            transform: translateY(-1px);
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: #101a26;
            color: rgba(255, 255, 255, 0.65);
            padding: 56px 0 32px;
            font-size: 0.92rem;
            line-height: 1.8;
        }

        .site-footer .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            display: inline-block;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .site-footer .footer-desc {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
        }

        .site-footer .footer-heading {
            font-weight: 700;
            font-size: 0.95rem;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
            text-transform: uppercase;
        }

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

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

        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.5);
            transition: color var(--transition-fast);
        }

        .site-footer ul li a:hover {
            color: var(--color-accent-light);
        }

        .site-footer .footer-bottom {
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            text-align: center;
            color: rgba(255, 255, 255, 0.35);
            font-size: 0.85rem;
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .hero-category h1 {
                font-size: 2.6rem;
            }

            .section-title {
                font-size: 2rem;
            }

            .cta-section h2 {
                font-size: 2rem;
            }

            .stat-number {
                font-size: 2.5rem;
            }

            .section-block {
                padding: 56px 0;
            }
        }

        @media (max-width: 768px) {
            .hero-category {
                padding: 70px 0 80px;
            }

            .hero-category h1 {
                font-size: 2rem;
            }

            .hero-category .hero-desc {
                font-size: 1rem;
            }

            .hero-category .hero-actions {
                flex-direction: column;
                align-items: center;
                gap: 12px;
            }

            .btn-hero-primary,
            .btn-hero-outline {
                width: 100%;
                max-width: 320px;
                justify-content: center;
                padding: 14px 28px;
                font-size: 1rem;
            }

            .section-title {
                font-size: 1.7rem;
            }

            .section-subtitle {
                font-size: 0.95rem;
            }

            .section-block {
                padding: 44px 0;
            }

            .feature-card {
                padding: 26px 20px;
            }

            .feature-card h3 {
                font-size: 1.08rem;
            }

            .insight-card .card-body-custom {
                padding: 16px 16px 20px;
            }

            .insight-card .card-body-custom h3 {
                font-size: 1rem;
            }

            .stats-bar {
                gap: 20px;
            }

            .stat-number {
                font-size: 2rem;
            }

            .stat-label {
                font-size: 0.82rem;
            }

            .process-step {
                flex: 1 1 140px;
                max-width: 180px;
            }

            .process-step h4 {
                font-size: 0.95rem;
            }

            .process-step p {
                font-size: 0.82rem;
            }

            .cta-section {
                padding: 56px 0;
            }

            .cta-section h2 {
                font-size: 1.6rem;
            }

            .cta-section p {
                font-size: 0.95rem;
            }

            .btn-cta-large {
                padding: 14px 32px;
                font-size: 1rem;
                width: 100%;
                max-width: 340px;
                justify-content: center;
            }

            .faq-question {
                font-size: 0.95rem;
                padding: 16px 18px;
            }

            .faq-item.open .faq-answer {
                padding: 0 18px 18px;
            }

            .site-footer {
                padding: 40px 0 24px;
                font-size: 0.85rem;
            }

            .site-footer .footer-brand {
                font-size: 1.15rem;
            }

            .navbar {
                padding: 10px 0;
            }

            .navbar-brand {
                font-size: 1.15rem;
            }

            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 0.95rem;
            }

            .nav-link {
                padding: 8px 14px !important;
                font-size: 0.9rem;
            }

            .nav-cta-btn {
                padding: 9px 18px;
                font-size: 0.88rem;
                margin-top: 6px;
            }
        }

        @media (max-width: 520px) {
            .hero-category h1 {
                font-size: 1.6rem;
            }

            .hero-category .hero-desc {
                font-size: 0.9rem;
            }

            .section-title {
                font-size: 1.4rem;
            }

            .section-subtitle {
                font-size: 0.88rem;
            }

            .feature-card {
                padding: 22px 16px;
            }

            .feature-card .feature-icon {
                width: 44px;
                height: 44px;
                font-size: 1.2rem;
                margin-bottom: 14px;
            }

            .feature-card h3 {
                font-size: 1rem;
            }

            .feature-card p {
                font-size: 0.85rem;
            }

            .insight-card .card-body-custom h3 {
                font-size: 0.92rem;
            }

            .insight-card .card-body-custom p {
                font-size: 0.82rem;
            }

            .stats-bar {
                gap: 14px;
                flex-direction: column;
                align-items: center;
            }

            .stat-number {
                font-size: 1.8rem;
            }

            .process-step {
                flex: 1 1 100%;
                max-width: 100%;
            }

            .process-step::after {
                display: none;
            }

            .scenario-card {
                padding: 22px 16px;
            }

            .scenario-card .scenario-icon {
                width: 50px;
                height: 50px;
                font-size: 1.3rem;
            }

            .scenario-card h4 {
                font-size: 0.95rem;
            }

            .cta-section h2 {
                font-size: 1.35rem;
            }

            .btn-cta-large {
                font-size: 0.95rem;
                padding: 12px 26px;
            }
        }

        /* ===== UTILITY ===== */
        .text-accent {
            color: var(--color-accent) !important;
        }

        .bg-accent-soft {
            background: rgba(200, 150, 62, 0.06);
        }

        .fw-800 {
            font-weight: 800;
        }

        .letter-spacing-tight {
            letter-spacing: -0.01em;
        }

/* roulang page: article */
:root {
            --color-primary: #1a3c5e;
            --color-primary-light: #234b74;
            --color-primary-dark: #0f2942;
            --color-accent: #c9a063;
            --color-accent-light: #d9b87c;
            --color-accent-dark: #b08845;
            --color-bg: #fafaf8;
            --color-bg-alt: #f2f1ed;
            --color-bg-dark: #1a1f2b;
            --color-text: #2c3038;
            --color-text-weak: #6b7280;
            --color-text-light: #9ca3af;
            --color-border: #e5e4df;
            --color-border-light: #f0efe9;
            --color-white: #ffffff;
            --color-success: #10b981;
            --color-warning: #f59e0b;
            --color-danger: #ef4444;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08), 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.10), 0 4px 12px rgba(0, 0, 0, 0.05);
            --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.12), 0 8px 20px rgba(0, 0, 0, 0.06);
            --container-max: 1200px;
            --content-max: 760px;
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.3s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-serif: 'Noto Serif SC', 'STSong', 'SimSun', 'Georgia', 'Times New Roman', serif;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-primary-light);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 3px;
        }

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

        button {
            cursor: pointer;
        }
        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 1050;
            padding: 0;
        }

        .navbar {
            padding: 0.6rem 0;
            min-height: 62px;
        }

        .navbar-brand {
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--color-primary) !important;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            letter-spacing: 0.02em;
            transition: opacity var(--transition-fast);
            white-space: nowrap;
        }
        .navbar-brand:hover {
            opacity: 0.85;
        }
        .navbar-brand .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--color-primary);
            color: var(--color-white);
            border-radius: var(--radius-sm);
            font-size: 1.1rem;
            font-weight: 700;
            flex-shrink: 0;
        }

        .navbar-nav {
            gap: 0.25rem;
        }

        .nav-link {
            color: var(--color-text) !important;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.5rem 1rem !important;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            position: relative;
        }
        .nav-link:hover {
            color: var(--color-primary) !important;
            background: rgba(26, 60, 94, 0.04);
        }
        .nav-link.active {
            color: var(--color-primary) !important;
            font-weight: 600;
            background: rgba(26, 60, 94, 0.06);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 2px;
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            background: var(--color-accent);
            color: #fff !important;
            font-weight: 600;
            font-size: 0.9rem;
            padding: 0.55rem 1.35rem;
            border-radius: 50px;
            transition: all var(--transition-smooth);
            white-space: nowrap;
        }
        .nav-cta-btn:hover {
            background: var(--color-accent-dark);
            color: #fff !important;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .nav-cta-btn i {
            font-size: 0.8rem;
            transition: transform var(--transition-fast);
        }
        .nav-cta-btn:hover i {
            transform: translateX(3px);
        }

        .navbar-toggler {
            border: 1.5px solid var(--color-border);
            border-radius: var(--radius-sm);
            padding: 0.45rem 0.7rem;
            color: var(--color-primary);
            background: var(--color-white);
            transition: all var(--transition-fast);
        }
        .navbar-toggler:hover {
            background: var(--color-bg-alt);
            border-color: var(--color-primary);
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(26, 60, 94, 0.12);
            outline: none;
        }
        .navbar-toggler i {
            font-size: 1.25rem;
        }

        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: var(--color-white);
                border-radius: var(--radius-md);
                box-shadow: var(--shadow-lg);
                padding: 0.75rem 1rem;
                margin-top: 0.5rem;
                border: 1px solid var(--color-border);
            }
            .nav-cta-btn {
                margin-top: 0.35rem;
                justify-content: center;
                width: 100%;
                text-align: center;
            }
            .nav-link {
                padding: 0.6rem 1rem !important;
            }
        }

        @media (max-width: 520px) {
            .navbar-brand {
                font-size: 1.1rem;
            }
            .navbar-brand .brand-icon {
                width: 32px;
                height: 32px;
                font-size: 0.95rem;
            }
            .navbar {
                padding: 0.45rem 0;
                min-height: 54px;
            }
        }

        /* ========== MAIN CONTENT WRAPPER ========== */
        .main-content {
            flex: 1;
            padding-bottom: 3rem;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-bar {
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border-light);
            padding: 0.75rem 0;
        }
        .breadcrumb-custom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.4rem;
            list-style: none;
            margin: 0;
            padding: 0;
            font-size: 0.9rem;
        }
        .breadcrumb-custom li {
            display: inline-flex;
            align-items: center;
            color: var(--color-text-weak);
        }
        .breadcrumb-custom li a {
            color: var(--color-text-weak);
            transition: color var(--transition-fast);
        }
        .breadcrumb-custom li a:hover {
            color: var(--color-primary);
        }
        .breadcrumb-custom .separator {
            margin: 0 0.35rem;
            color: var(--color-text-light);
            font-size: 0.75rem;
        }
        .breadcrumb-custom .current {
            color: var(--color-text);
            font-weight: 500;
            max-width: 340px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        /* ========== ARTICLE HEADER AREA ========== */
        .article-header-section {
            background: var(--color-white);
            padding: 2.5rem 0 1.5rem;
            border-bottom: 1px solid var(--color-border-light);
        }
        .article-meta-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.8rem 1.5rem;
            margin-bottom: 1.2rem;
            font-size: 0.9rem;
            color: var(--color-text-weak);
        }
        .article-meta-row .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .article-meta-row .meta-item i {
            font-size: 0.85rem;
            color: var(--color-accent);
        }
        .article-category-tag {
            display: inline-block;
            background: rgba(201, 160, 99, 0.12);
            color: var(--color-accent-dark);
            font-weight: 600;
            font-size: 0.82rem;
            padding: 0.3rem 0.8rem;
            border-radius: 50px;
            transition: all var(--transition-fast);
        }
        .article-category-tag:hover {
            background: rgba(201, 160, 99, 0.22);
            color: var(--color-accent-dark);
        }
        .article-h1 {
            font-family: var(--font-serif);
            font-size: 2.2rem;
            font-weight: 700;
            line-height: 1.35;
            color: var(--color-primary-dark);
            margin: 0 0 0.6rem;
            letter-spacing: 0.01em;
        }
        .article-excerpt-block {
            font-size: 1.08rem;
            color: var(--color-text-weak);
            line-height: 1.7;
            margin-top: 0.6rem;
        }

        @media (max-width: 768px) {
            .article-header-section {
                padding: 1.8rem 0 1rem;
            }
            .article-h1 {
                font-size: 1.6rem;
            }
            .article-meta-row {
                font-size: 0.82rem;
                gap: 0.5rem 1rem;
            }
        }
        @media (max-width: 520px) {
            .article-h1 {
                font-size: 1.35rem;
            }
            .article-excerpt-block {
                font-size: 0.95rem;
            }
            .breadcrumb-custom {
                font-size: 0.8rem;
            }
            .breadcrumb-custom .current {
                max-width: 180px;
            }
        }

        /* ========== ARTICLE FEATURED IMAGE ========== */
        .article-featured-img-wrap {
            max-width: var(--content-max);
            margin: 1.5rem auto 0;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .article-featured-img-wrap img {
            width: 100%;
            height: auto;
            object-fit: cover;
            display: block;
        }

        /* ========== ARTICLE BODY ========== */
        .article-body-container {
            max-width: var(--content-max);
            margin: 0 auto;
            padding: 2rem 1rem 1.5rem;
        }

        .article-body {
            font-family: var(--font-sans);
            font-size: 1.08rem;
            line-height: 1.85;
            color: var(--color-text);
        }
        .article-body h2 {
            font-family: var(--font-serif);
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-primary-dark);
            margin: 2.2rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--color-border);
            line-height: 1.4;
        }
        .article-body h3 {
            font-family: var(--font-serif);
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--color-primary);
            margin: 1.8rem 0 0.8rem;
            line-height: 1.4;
        }
        .article-body h4 {
            font-size: 1.12rem;
            font-weight: 600;
            color: var(--color-text);
            margin: 1.4rem 0 0.6rem;
        }
        .article-body p {
            margin-bottom: 1.1rem;
        }
        .article-body img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius-md);
            margin: 1.5rem auto;
            box-shadow: var(--shadow-sm);
            display: block;
        }
        .article-body blockquote {
            border-left: 4px solid var(--color-accent);
            background: rgba(201, 160, 99, 0.05);
            padding: 1rem 1.4rem;
            margin: 1.6rem 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--color-text-weak);
            font-style: italic;
            font-size: 1.02rem;
        }
        .article-body ul,
        .article-body ol {
            margin: 1rem 0 1.3rem;
            padding-left: 1.8rem;
        }
        .article-body li {
            margin-bottom: 0.5rem;
        }
        .article-body a {
            color: var(--color-primary);
            text-decoration: underline;
            text-decoration-color: rgba(26, 60, 94, 0.25);
            text-underline-offset: 4px;
            transition: all var(--transition-fast);
        }
        .article-body a:hover {
            color: var(--color-primary-light);
            text-decoration-color: var(--color-primary);
        }
        .article-body code {
            background: var(--color-bg-alt);
            padding: 0.15em 0.45em;
            border-radius: 3px;
            font-size: 0.9em;
            color: var(--color-primary-dark);
            font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
        }
        .article-body pre {
            background: var(--color-bg-dark);
            color: #e2e8f0;
            padding: 1.2rem 1.5rem;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 1.5rem 0;
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .article-body pre code {
            background: none;
            padding: 0;
            color: inherit;
            font-size: inherit;
        }

        @media (max-width: 768px) {
            .article-body-container {
                padding: 1.5rem 0.75rem 1rem;
            }
            .article-body {
                font-size: 1rem;
                line-height: 1.75;
            }
            .article-body h2 {
                font-size: 1.35rem;
            }
            .article-body h3 {
                font-size: 1.15rem;
            }
        }
        @media (max-width: 520px) {
            .article-body {
                font-size: 0.95rem;
            }
            .article-body h2 {
                font-size: 1.2rem;
            }
        }

        /* ========== NOT FOUND STATE ========== */
        .not-found-block {
            text-align: center;
            padding: 4rem 1.5rem;
            max-width: 560px;
            margin: 0 auto;
        }
        .not-found-block .nf-icon {
            font-size: 4rem;
            color: var(--color-text-light);
            margin-bottom: 1.2rem;
        }
        .not-found-block h2 {
            font-size: 1.6rem;
            color: var(--color-text);
            margin-bottom: 0.8rem;
        }
        .not-found-block p {
            color: var(--color-text-weak);
            margin-bottom: 1.8rem;
            font-size: 1rem;
        }
        .btn-back-home {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--color-primary);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.7rem 1.8rem;
            border-radius: 50px;
            transition: all var(--transition-smooth);
            border: none;
        }
        .btn-back-home:hover {
            background: var(--color-primary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        /* ========== ARTICLE FOOTER AREA (tags / share) ========== */
        .article-footer-meta {
            max-width: var(--content-max);
            margin: 0 auto 1.5rem;
            padding: 1rem 1rem 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.8rem 1.5rem;
            border-top: 1px solid var(--color-border-light);
            padding-top: 1.5rem;
        }
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            align-items: center;
        }
        .tag-list .tag-label {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-text);
            margin-right: 0.2rem;
        }
        .tag-pill {
            display: inline-block;
            background: var(--color-bg-alt);
            color: var(--color-text-weak);
            font-size: 0.82rem;
            padding: 0.3rem 0.85rem;
            border-radius: 50px;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
        }
        .tag-pill:hover {
            background: var(--color-white);
            border-color: var(--color-accent);
            color: var(--color-accent-dark);
        }
        .back-to-list-link {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-weight: 500;
            font-size: 0.9rem;
            color: var(--color-primary);
            margin-left: auto;
        }
        .back-to-list-link:hover {
            color: var(--color-primary-light);
        }
        .back-to-list-link i {
            font-size: 0.8rem;
        }

        /* ========== RELATED ARTICLES ========== */
        .related-section {
            background: var(--color-bg-alt);
            padding: 3rem 0;
            border-top: 1px solid var(--color-border-light);
        }
        .related-section .section-label {
            text-align: center;
            font-size: 0.85rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--color-accent-dark);
            margin-bottom: 0.5rem;
        }
        .related-section .section-title {
            text-align: center;
            font-family: var(--font-serif);
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--color-primary-dark);
            margin-bottom: 2rem;
        }
        .related-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-smooth);
            height: 100%;
            display: flex;
            flex-direction: column;
            border: 1px solid var(--color-border-light);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-border);
        }
        .related-card .card-img-wrap {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            position: relative;
            background: var(--color-bg-alt);
        }
        .related-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .related-card:hover .card-img-wrap img {
            transform: scale(1.04);
        }
        .related-card .card-body-content {
            padding: 1.2rem 1.3rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card .card-body-content h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 0.5rem;
            line-height: 1.45;
        }
        .related-card .card-body-content p {
            font-size: 0.9rem;
            color: var(--color-text-weak);
            margin: 0 0 0.8rem;
            flex: 1;
            line-height: 1.6;
        }
        .related-card .card-meta {
            font-size: 0.8rem;
            color: var(--color-text-light);
        }
        .related-card .card-link-overlay {
            position: absolute;
            inset: 0;
            z-index: 2;
        }

        @media (max-width: 768px) {
            .related-section {
                padding: 2rem 0;
            }
            .related-section .section-title {
                font-size: 1.4rem;
            }
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: var(--color-primary);
            background-image: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            padding: 3.5rem 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.03);
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.025);
            pointer-events: none;
        }
        .cta-section .cta-inner {
            position: relative;
            z-index: 1;
            max-width: 640px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        .cta-section h3 {
            font-family: var(--font-serif);
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.8rem;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.05rem;
            margin-bottom: 1.8rem;
            line-height: 1.7;
        }
        .btn-cta-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            padding: 0.75rem 2.2rem;
            border-radius: 50px;
            transition: all var(--transition-smooth);
            border: none;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
        }
        .btn-cta-primary:hover {
            background: var(--color-accent-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(0, 0, 0, 0.35);
        }
        .btn-cta-primary i {
            transition: transform var(--transition-fast);
        }
        .btn-cta-primary:hover i {
            transform: translateX(4px);
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 2.5rem 0;
            }
            .cta-section h3 {
                font-size: 1.4rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 3rem 0 1.5rem;
            font-size: 0.92rem;
        }
        .site-footer .footer-brand {
            font-weight: 700;
            font-size: 1.2rem;
            color: #fff;
            display: inline-block;
            margin-bottom: 0.6rem;
        }
        .site-footer .footer-desc {
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.7;
            font-size: 0.9rem;
            max-width: 360px;
        }
        .site-footer .footer-heading {
            font-weight: 600;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 0.45rem;
        }
        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition-fast);
            font-size: 0.9rem;
        }
        .site-footer ul li a:hover {
            color: var(--color-accent-light);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 2rem;
            padding-top: 1.25rem;
            text-align: center;
            color: rgba(255, 255, 255, 0.35);
            font-size: 0.82rem;
        }

        @media (max-width: 768px) {
            .site-footer {
                padding: 2rem 0 1rem;
                font-size: 0.85rem;
            }
            .site-footer .footer-desc {
                max-width: 100%;
            }
        }