/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #f0b42a;
            --primary-dark: #d4941a;
            --primary-light: #fcd872;
            --secondary: #0b0f1a;
            --secondary-light: #151c2e;
            --accent: #00d4ff;
            --accent-dark: #0099cc;
            --danger: #e74c3c;
            --success: #2ecc71;
            --bg-dark: #080c14;
            --bg-card: #0f1625;
            --bg-section: #0b101c;
            --text-light: #f0f2f5;
            --text-muted: #8a93a8;
            --text-dim: #5a6278;
            --border-color: #1e2a3a;
            --border-glow: rgba(240, 180, 42, 0.15);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-glow: 0 0 30px rgba(240, 180, 42, 0.08);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-light);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }
        ::selection {
            background: var(--primary);
            color: var(--secondary);
        }

        /* ===== Container ===== */
        .container {
            max-width: 1200px;
            padding: 0 24px;
            margin: 0 auto;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Typography ===== */
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-light);
            letter-spacing: -0.01em;
        }
        h1 {
            font-size: clamp(2.2rem, 5vw, 3.8rem);
        }
        h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.8rem);
        }
        h3 {
            font-size: clamp(1.3rem, 2.5vw, 1.8rem);
        }
        h4 {
            font-size: clamp(1.1rem, 2vw, 1.4rem);
        }
        p {
            color: var(--text-muted);
            margin-bottom: 1rem;
        }
        .text-glow {
            color: var(--primary);
        }
        .text-accent {
            color: var(--accent);
        }
        .section-label {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.12em;
            color: var(--primary);
            background: rgba(240, 180, 42, 0.1);
            padding: 4px 16px;
            border-radius: 20px;
            border: 1px solid rgba(240, 180, 42, 0.2);
            margin-bottom: 12px;
        }

        /* ===== Header & Top Bar ===== */
        .top-bar {
            background: rgba(8, 12, 20, 0.95);
            border-bottom: 1px solid var(--border-color);
            padding: 6px 0;
            font-size: 0.8rem;
            color: var(--text-dim);
            backdrop-filter: blur(12px);
        }
        .top-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
        }
        .top-bar a {
            color: var(--text-dim);
            font-size: 0.78rem;
            margin-left: 18px;
            transition: var(--transition);
        }
        .top-bar a:hover {
            color: var(--primary);
        }
        .top-bar .top-right {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .top-bar .top-right i {
            margin-right: 4px;
        }
        @media (max-width: 520px) {
            .top-bar .container {
                justify-content: center;
                font-size: 0.7rem;
            }
            .top-bar a {
                margin-left: 10px;
                font-size: 0.7rem;
            }
        }

        /* ===== Navbar ===== */
        .navbar-main {
            background: rgba(11, 15, 26, 0.96);
            border-bottom: 1px solid rgba(30, 42, 58, 0.5);
            padding: 0;
            backdrop-filter: blur(16px);
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: var(--transition);
        }
        .navbar-main .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
        }
        .navbar-brand {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 0;
        }
        .navbar-brand .brand-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--secondary);
            font-weight: 900;
            flex-shrink: 0;
        }
        .navbar-brand:hover {
            color: var(--primary);
        }
        .navbar-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .navbar-nav .nav-item .nav-link {
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.9rem;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
        }
        .navbar-nav .nav-item .nav-link:hover {
            color: var(--text-light);
            background: rgba(240, 180, 42, 0.06);
        }
        .navbar-nav .nav-item .nav-link.active {
            color: var(--primary);
            background: rgba(240, 180, 42, 0.1);
        }
        .navbar-nav .nav-item .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }
        .nav-cta-btn {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--secondary) !important;
            font-weight: 700 !important;
            padding: 8px 24px !important;
            border-radius: var(--radius-sm) !important;
            margin-left: 8px;
            box-shadow: 0 4px 15px rgba(240, 180, 42, 0.25);
            transition: var(--transition);
        }
        .nav-cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(240, 180, 42, 0.35);
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
        }
        .navbar-toggler {
            background: transparent;
            border: 1px solid var(--border-color);
            color: var(--text-light);
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            font-size: 1.2rem;
            display: none;
        }
        .navbar-toggler:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        @media (max-width: 768px) {
            .navbar-toggler {
                display: block;
            }
            .navbar-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                padding: 16px 0;
                gap: 2px;
            }
            .navbar-nav.show {
                display: flex;
            }
            .navbar-main .container {
                flex-wrap: wrap;
                min-height: 60px;
            }
            .navbar-nav .nav-item .nav-link {
                padding: 10px 16px;
                width: 100%;
            }
            .nav-cta-btn {
                margin-left: 0;
                margin-top: 8px;
                text-align: center;
            }
            .navbar-nav .nav-item .nav-link.active::after {
                display: none;
            }
        }

        /* ===== Hero ===== */
        .hero {
            min-height: 85vh;
            display: flex;
            align-items: center;
            position: relative;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8, 12, 20, 0.92) 0%, rgba(11, 15, 26, 0.7) 50%, rgba(8, 12, 20, 0.88) 100%);
            z-index: 1;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 200px;
            background: linear-gradient(to top, var(--bg-dark), transparent);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            padding-top: 40px;
            padding-bottom: 60px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(240, 180, 42, 0.1);
            border: 1px solid rgba(240, 180, 42, 0.2);
            border-radius: 30px;
            padding: 6px 20px 6px 12px;
            font-size: 0.8rem;
            color: var(--primary);
            margin-bottom: 24px;
            backdrop-filter: blur(8px);
        }
        .hero-badge .pulse-dot {
            width: 8px;
            height: 8px;
            background: var(--success);
            border-radius: 50%;
            display: inline-block;
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(0.8);
            }
        }
        .hero h1 {
            max-width: 860px;
            margin-bottom: 20px;
            background: linear-gradient(to right, var(--text-light) 0%, var(--primary-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero .lead {
            font-size: clamp(1rem, 1.6vw, 1.2rem);
            color: var(--text-muted);
            max-width: 680px;
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }
        .btn-primary-custom {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--secondary);
            font-weight: 700;
            padding: 14px 36px;
            border: none;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 6px 24px rgba(240, 180, 42, 0.3);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn-primary-custom:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(240, 180, 42, 0.4);
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            color: var(--secondary);
        }
        .btn-primary-custom:focus {
            outline: 3px solid var(--primary);
            outline-offset: 3px;
        }
        .btn-outline-custom {
            background: transparent;
            color: var(--text-light);
            font-weight: 600;
            padding: 13px 32px;
            border: 2px solid var(--border-color);
            border-radius: var(--radius-sm);
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn-outline-custom:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(240, 180, 42, 0.05);
            transform: translateY(-2px);
        }
        .btn-outline-custom:focus {
            outline: 3px solid var(--primary);
            outline-offset: 3px;
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            margin-top: 50px;
            padding-top: 30px;
            border-top: 1px solid rgba(30, 42, 58, 0.4);
        }
        .hero-stat-item h4 {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 2px;
        }
        .hero-stat-item h4 .counter-suffix {
            color: var(--primary);
        }
        .hero-stat-item p {
            font-size: 0.85rem;
            color: var(--text-dim);
            margin: 0;
        }
        @media (max-width: 768px) {
            .hero {
                min-height: 70vh;
            }
            .hero-stats {
                gap: 24px;
            }
            .hero-stat-item h4 {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 520px) {
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn-primary-custom,
            .hero-actions .btn-outline-custom {
                width: 100%;
                justify-content: center;
            }
            .hero-stats {
                gap: 16px;
                justify-content: space-between;
            }
        }

        /* ===== Section Common ===== */
        .section-padding {
            padding: 90px 0;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 60px 0;
            }
        }
        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-header h2 {
            margin-bottom: 12px;
        }
        .section-header p {
            max-width: 600px;
            margin: 0 auto;
            color: var(--text-dim);
        }
        .bg-section-alt {
            background: var(--bg-section);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .bg-card-dark {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            transition: var(--transition);
        }
        .bg-card-dark:hover {
            border-color: rgba(240, 180, 42, 0.2);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }

        /* ===== Features / Core Strengths ===== */
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            transition: var(--transition);
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--primary-dark));
            opacity: 0;
            transition: var(--transition);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-card:hover {
            border-color: rgba(240, 180, 42, 0.2);
            box-shadow: var(--shadow-glow);
            transform: translateY(-6px);
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            background: rgba(240, 180, 42, 0.1);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--primary);
            margin-bottom: 20px;
            transition: var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: rgba(240, 180, 42, 0.2);
            transform: scale(1.05);
        }
        .feature-card h4 {
            margin-bottom: 10px;
            font-size: 1.15rem;
        }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-dim);
            margin: 0;
        }

        /* ===== Stats / Data Panel ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 20px;
            text-align: center;
            transition: var(--transition);
        }
        .stat-item:hover {
            border-color: rgba(240, 180, 42, 0.15);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }
        .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--text-light);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .stat-number .stat-symbol {
            color: var(--primary);
        }
        .stat-label {
            font-size: 0.85rem;
            color: var(--text-dim);
            margin: 0;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-number {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-item {
                padding: 20px 12px;
            }
        }

        /* ===== Service / Intro Block ===== */
        .service-block {
            display: flex;
            align-items: center;
            gap: 50px;
            margin-bottom: 50px;
        }
        .service-block:last-child {
            margin-bottom: 0;
        }
        .service-block.reverse {
            flex-direction: row-reverse;
        }
        .service-image {
            flex: 1;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
        }
        .service-image img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            transition: var(--transition);
        }
        .service-image:hover img {
            transform: scale(1.03);
        }
        .service-content {
            flex: 1;
        }
        .service-content h3 {
            margin-bottom: 14px;
        }
        .service-content p {
            color: var(--text-dim);
            font-size: 0.95rem;
        }
        .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 16px;
        }
        .service-tag {
            background: rgba(240, 180, 42, 0.08);
            border: 1px solid rgba(240, 180, 42, 0.15);
            color: var(--primary);
            font-size: 0.78rem;
            padding: 4px 14px;
            border-radius: 20px;
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .service-block,
            .service-block.reverse {
                flex-direction: column;
                gap: 28px;
            }
            .service-image img {
                height: 220px;
            }
        }

        /* ===== CMS / Content List ===== */
        .content-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .content-card:hover {
            border-color: rgba(240, 180, 42, 0.2);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }
        .content-card .card-img {
            height: 200px;
            object-fit: cover;
            width: 100%;
            border-bottom: 1px solid var(--border-color);
        }
        .content-card .card-body {
            padding: 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .content-card .card-body .card-category {
            font-size: 0.72rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--primary);
            margin-bottom: 6px;
        }
        .content-card .card-body .card-title {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .content-card .card-body .card-title a {
            color: var(--text-light);
        }
        .content-card .card-body .card-title a:hover {
            color: var(--primary);
        }
        .content-card .card-body .card-text {
            font-size: 0.88rem;
            color: var(--text-dim);
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
            margin-bottom: 14px;
        }
        .content-card .card-body .card-meta {
            font-size: 0.78rem;
            color: var(--text-dim);
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid rgba(30, 42, 58, 0.4);
            padding-top: 12px;
            margin-top: auto;
        }
        .content-card .card-body .card-meta .date {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .content-card .card-body .card-meta .read-more {
            color: var(--primary);
            font-weight: 600;
            font-size: 0.8rem;
        }
        .content-card .card-body .card-meta .read-more:hover {
            color: var(--primary-light);
        }
        .empty-cms {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 20px;
            color: var(--text-dim);
            background: var(--bg-card);
            border: 1px dashed var(--border-color);
            border-radius: var(--radius-md);
        }
        .empty-cms i {
            font-size: 2.4rem;
            color: var(--text-dim);
            margin-bottom: 16px;
            display: block;
        }

        /* ===== Process / Steps ===== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .process-step {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 24px 28px;
            text-align: center;
            position: relative;
            transition: var(--transition);
            counter-increment: step;
        }
        .process-step:hover {
            border-color: rgba(240, 180, 42, 0.2);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }
        .process-step .step-number {
            width: 48px;
            height: 48px;
            background: rgba(240, 180, 42, 0.12);
            border: 2px solid var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--primary);
            margin: 0 auto 18px;
            transition: var(--transition);
        }
        .process-step:hover .step-number {
            background: var(--primary);
            color: var(--secondary);
        }
        .process-step .step-icon {
            font-size: 1.6rem;
            color: var(--accent);
            margin-bottom: 12px;
            display: block;
        }
        .process-step h5 {
            margin-bottom: 8px;
            font-size: 1.05rem;
        }
        .process-step p {
            font-size: 0.85rem;
            color: var(--text-dim);
            margin: 0;
        }
        .process-step::after {
            content: '→';
            position: absolute;
            right: -18px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 1.6rem;
            color: var(--text-dim);
            font-weight: 300;
            opacity: 0.3;
        }
        .process-step:last-child::after {
            display: none;
        }
        @media (max-width: 768px) {
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .process-step::after {
                display: none;
            }
        }
        @media (max-width: 520px) {
            .process-steps {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-accordion .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm) !important;
            margin-bottom: 12px;
            overflow: hidden;
        }
        .faq-accordion .accordion-item:last-child {
            margin-bottom: 0;
        }
        .faq-accordion .accordion-header {
            margin: 0;
        }
        .faq-accordion .accordion-button {
            background: var(--bg-card);
            color: var(--text-light);
            font-weight: 600;
            font-size: 0.98rem;
            padding: 18px 24px;
            border: none;
            box-shadow: none;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            width: 100%;
            text-align: left;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
        }
        .faq-accordion .accordion-button::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 1.1rem;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
            background: none;
            width: auto;
            height: auto;
            margin-left: 12px;
        }
        .faq-accordion .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            background: rgba(240, 180, 42, 0.04);
            color: var(--primary);
        }
        .faq-accordion .accordion-button:focus {
            outline: 2px solid var(--primary);
            outline-offset: -2px;
        }
        .faq-accordion .accordion-body {
            padding: 0 24px 20px;
            color: var(--text-dim);
            font-size: 0.92rem;
            line-height: 1.8;
            border-top: 1px solid rgba(30, 42, 58, 0.3);
        }
        .faq-accordion .accordion-body p {
            margin-bottom: 0;
            padding-top: 16px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(240, 180, 42, 0.05), rgba(0, 212, 255, 0.03)), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            position: relative;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(8, 12, 20, 0.85);
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            color: var(--text-light);
        }
        .cta-section p {
            color: var(--text-dim);
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--secondary);
            border-top: 1px solid var(--border-color);
            padding: 56px 0 32px;
        }
        .footer-brand {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        .footer-brand .brand-icon-sm {
            width: 30px;
            height: 30px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            color: var(--secondary);
            font-weight: 900;
            flex-shrink: 0;
        }
        .footer p {
            font-size: 0.88rem;
            color: var(--text-dim);
            max-width: 360px;
        }
        .footer h6 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 14px;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }
        .footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer ul li {
            margin-bottom: 8px;
        }
        .footer ul li a {
            color: var(--text-dim);
            font-size: 0.88rem;
            transition: var(--transition);
        }
        .footer ul li a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            margin-top: 40px;
            text-align: center;
            font-size: 0.82rem;
            color: var(--text-dim);
        }
        .footer .social-links {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }
        .footer .social-links a {
            width: 40px;
            height: 40px;
            background: rgba(240, 180, 42, 0.06);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-dim);
            font-size: 1rem;
            transition: var(--transition);
        }
        .footer .social-links a:hover {
            background: rgba(240, 180, 42, 0.12);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .footer .row>div {
                margin-bottom: 32px;
            }
            .footer .footer-bottom {
                margin-top: 20px;
            }
        }

        /* ===== Scroll to Top ===== */
        .scroll-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 48px;
            height: 48px;
            background: var(--primary);
            color: var(--secondary);
            border: none;
            border-radius: 50%;
            font-size: 1.2rem;
            cursor: pointer;
            box-shadow: 0 6px 20px rgba(240, 180, 42, 0.3);
            transition: var(--transition);
            z-index: 1060;
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
        }
        .scroll-top.visible {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .scroll-top:hover {
            background: var(--primary-light);
            transform: translateY(-4px);
            box-shadow: 0 10px 30px rgba(240, 180, 42, 0.4);
        }
        .scroll-top:focus {
            outline: 3px solid var(--primary);
            outline-offset: 3px;
        }

        /* ===== Animations ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-fade-up {
            animation: fadeInUp 0.7s ease forwards;
        }
        .animate-delay-1 {
            animation-delay: 0.1s;
        }
        .animate-delay-2 {
            animation-delay: 0.2s;
        }
        .animate-delay-3 {
            animation-delay: 0.3s;
        }
        .animate-delay-4 {
            animation-delay: 0.4s;
        }

        /* ===== Responsive fine-tune ===== */
        @media (max-width: 576px) {
            .section-padding {
                padding: 44px 0;
            }
            .section-header {
                margin-bottom: 36px;
            }
            .service-image img {
                height: 180px;
            }
            .content-card .card-img {
                height: 160px;
            }
        }

        /* ===== Utility ===== */
        .border-glow {
            border-color: rgba(240, 180, 42, 0.15) !important;
        }
        .shadow-glow-sm {
            box-shadow: var(--shadow-glow);
        }
        .gap-8 {
            gap: 8px;
        }
        .gap-12 {
            gap: 12px;
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #0f1a2e;
            --primary-light: #1a2d4a;
            --primary-dark: #080f1a;
            --accent: #e8a832;
            --accent-hover: #d4942a;
            --accent-glow: rgba(232, 168, 50, 0.25);
            --bg-body: #f4f6fb;
            --bg-card: #ffffff;
            --bg-dark: #0b1322;
            --bg-section-alt: #eef1f7;
            --text-primary: #0f1a2e;
            --text-secondary: #3d4a5e;
            --text-light: #8a95a8;
            --text-white: #f0f2f5;
            --border-color: #dce1ea;
            --border-light: #e8ecf2;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(15, 26, 46, 0.06);
            --shadow-md: 0 8px 24px rgba(15, 26, 46, 0.08);
            --shadow-lg: 0 16px 40px rgba(15, 26, 46, 0.12);
            --shadow-accent: 0 4px 20px rgba(232, 168, 50, 0.35);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-top-height: 40px;
            --nav-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-family);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 1rem;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent-hover);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }
        button,
        input,
        textarea {
            font-family: inherit;
        }
        ul,
        ol {
            padding-left: 0;
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ===== Top Bar ===== */
        .top-bar {
            background: var(--primary-dark);
            color: var(--text-light);
            font-size: 0.82rem;
            padding: 6px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .top-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px 16px;
        }
        .top-bar .top-left span {
            margin-right: 18px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .top-bar .top-left i {
            color: var(--accent);
            font-size: 0.75rem;
        }
        .top-bar .top-right a {
            color: var(--text-light);
            font-size: 0.82rem;
            margin-left: 14px;
            transition: color var(--transition);
        }
        .top-bar .top-right a:hover {
            color: var(--accent);
        }

        /* ===== Navbar ===== */
        .navbar-main {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 1050;
            min-height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .navbar-main .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.3px;
            text-decoration: none;
        }
        .navbar-brand:hover {
            color: var(--primary);
        }
        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--accent), #d4942a);
            color: #0f1a2e;
            border-radius: var(--radius-sm);
            font-size: 1.3rem;
            font-weight: 800;
            box-shadow: 0 2px 10px rgba(232, 168, 50, 0.3);
        }
        .navbar-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-item {
            margin: 0;
        }
        .nav-link {
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.92rem;
            color: var(--text-secondary);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--accent);
            background: rgba(232, 168, 50, 0.08);
        }
        .nav-link.active {
            color: var(--accent);
            background: rgba(232, 168, 50, 0.12);
        }
        .nav-cta-btn {
            background: linear-gradient(135deg, var(--accent), #d4942a);
            color: #0f1a2e !important;
            padding: 8px 22px !important;
            border-radius: 50px !important;
            font-weight: 700;
            box-shadow: 0 4px 14px rgba(232, 168, 50, 0.35);
            transition: all var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(232, 168, 50, 0.45);
            background: linear-gradient(135deg, #f0b840, #d4942a);
            color: #0f1a2e !important;
        }
        .navbar-toggler {
            display: none;
            background: none;
            border: 2px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 6px 12px;
            font-size: 1.3rem;
            color: var(--text-primary);
            cursor: pointer;
            transition: all var(--transition);
        }
        .navbar-toggler:hover {
            border-color: var(--accent);
            color: var(--accent);
        }

        /* ===== Article Hero ===== */
        .article-hero {
            background: var(--primary-dark);
            position: relative;
            padding: 60px 0 50px;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 19, 34, 0.92) 0%, rgba(11, 19, 34, 0.7) 100%);
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
        }
        .article-hero .breadcrumb-custom {
            font-size: 0.85rem;
            color: var(--text-light);
            margin-bottom: 16px;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .article-hero .breadcrumb-custom a {
            color: var(--accent);
            opacity: 0.85;
        }
        .article-hero .breadcrumb-custom a:hover {
            opacity: 1;
            color: var(--accent);
        }
        .article-hero .breadcrumb-custom span {
            color: var(--text-light);
        }
        .article-hero h1 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.25;
            max-width: 900px;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .article-hero .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 28px;
            color: var(--text-light);
            font-size: 0.9rem;
            margin-top: 8px;
        }
        .article-hero .article-meta i {
            color: var(--accent);
            margin-right: 6px;
            opacity: 0.8;
        }
        .article-hero .article-meta span {
            display: inline-flex;
            align-items: center;
        }

        /* ===== Article Content ===== */
        .article-section {
            padding: 60px 0 80px;
        }
        .article-wrapper {
            max-width: 860px;
            margin: 0 auto;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 48px 56px;
            border: 1px solid var(--border-light);
        }
        .article-body {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-secondary);
        }
        .article-body h2,
        .article-body h3,
        .article-body h4 {
            margin-top: 1.8em;
            margin-bottom: 0.6em;
            color: var(--text-primary);
        }
        .article-body h2 {
            font-size: 1.6rem;
            border-bottom: 2px solid var(--border-light);
            padding-bottom: 0.3em;
        }
        .article-body h3 {
            font-size: 1.3rem;
        }
        .article-body p {
            margin-bottom: 1.2em;
        }
        .article-body ul,
        .article-body ol {
            padding-left: 1.5em;
            list-style: disc;
            margin-bottom: 1.2em;
        }
        .article-body ul li,
        .article-body ol li {
            margin-bottom: 0.4em;
        }
        .article-body a {
            color: var(--accent);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-body a:hover {
            color: var(--accent-hover);
        }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 1.5em 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body blockquote {
            border-left: 4px solid var(--accent);
            padding: 12px 20px;
            margin: 1.5em 0;
            background: rgba(232, 168, 50, 0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-secondary);
        }
        .article-body code {
            background: var(--bg-section-alt);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--primary-light);
        }
        .article-body pre {
            background: var(--primary-dark);
            color: var(--text-white);
            padding: 20px 24px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            font-size: 0.9rem;
            margin: 1.5em 0;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .article-body pre code {
            background: none;
            color: inherit;
            padding: 0;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
        }
        .article-tags .tag {
            background: var(--bg-section-alt);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            border: 1px solid var(--border-light);
        }
        .article-tags .tag:hover {
            background: var(--accent);
            color: #0f1a2e;
            border-color: var(--accent);
        }
        .article-not-found {
            text-align: center;
            padding: 60px 20px;
        }
        .article-not-found .not-found-icon {
            font-size: 4rem;
            color: var(--text-light);
            margin-bottom: 20px;
        }
        .article-not-found h2 {
            font-size: 1.8rem;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .article-not-found p {
            color: var(--text-secondary);
            margin-bottom: 24px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .article-not-found .btn-back {
            background: var(--accent);
            color: #0f1a2e;
            padding: 10px 32px;
            border-radius: 50px;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition);
        }
        .article-not-found .btn-back:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: var(--shadow-accent);
        }

        /* ===== Related / CTA ===== */
        .article-cta-section {
            background: var(--primary-dark);
            padding: 60px 0;
            position: relative;
            overflow: hidden;
        }
        .article-cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center center / cover no-repeat;
            opacity: 0.08;
        }
        .article-cta-section .container {
            position: relative;
            z-index: 2;
        }
        .article-cta-section .cta-box {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: center;
            backdrop-filter: blur(6px);
        }
        .article-cta-section .cta-box h3 {
            font-size: 1.8rem;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .article-cta-section .cta-box p {
            color: var(--text-light);
            max-width: 620px;
            margin: 0 auto 28px;
            font-size: 1.05rem;
        }
        .article-cta-section .cta-box .btn-cta {
            background: linear-gradient(135deg, var(--accent), #d4942a);
            color: #0f1a2e;
            padding: 14px 40px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: 0 6px 24px rgba(232, 168, 50, 0.35);
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            border: none;
        }
        .article-cta-section .cta-box .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 32px rgba(232, 168, 50, 0.45);
            background: linear-gradient(135deg, #f0b840, #d4942a);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--primary-dark);
            color: var(--text-light);
            padding: 56px 0 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }
        .footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .footer .brand-icon-sm {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--accent), #d4942a);
            color: #0f1a2e;
            border-radius: var(--radius-sm);
            font-size: 1.1rem;
            font-weight: 800;
        }
        .footer p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 16px;
            max-width: 360px;
        }
        .footer .social-links {
            display: flex;
            gap: 12px;
            margin-top: 8px;
        }
        .footer .social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-light);
            font-size: 1.1rem;
            transition: all var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer .social-links a:hover {
            background: var(--accent);
            color: #0f1a2e;
            border-color: var(--accent);
            transform: translateY(-3px);
        }
        .footer h6 {
            color: var(--text-white);
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer ul li {
            margin-bottom: 10px;
        }
        .footer ul li a {
            color: var(--text-light);
            font-size: 0.9rem;
            transition: color var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer ul li a:hover {
            color: var(--accent);
        }
        .footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 20px;
            margin-top: 36px;
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-light);
        }
        .footer .footer-bottom a {
            color: var(--text-light);
        }
        .footer .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-hero h1 {
                font-size: 1.9rem;
            }
            .article-wrapper {
                padding: 36px 32px;
            }
        }
        @media (max-width: 768px) {
            .top-bar .container {
                justify-content: center;
                text-align: center;
                font-size: 0.78rem;
            }
            .top-bar .top-right a {
                margin-left: 10px;
            }
            .navbar-toggler {
                display: block;
            }
            .navbar-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--bg-card);
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                padding: 16px 20px;
                box-shadow: var(--shadow-lg);
                border-bottom: 2px solid var(--border-light);
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                gap: 4px;
            }
            .navbar-nav.show {
                display: flex;
            }
            .nav-link {
                padding: 12px 16px;
                width: 100%;
                text-align: left;
            }
            .nav-cta-btn {
                justify-content: center;
                margin-top: 8px;
            }
            .article-hero {
                padding: 40px 0 36px;
            }
            .article-hero h1 {
                font-size: 1.6rem;
            }
            .article-hero .article-meta {
                gap: 10px 18px;
                font-size: 0.82rem;
            }
            .article-wrapper {
                padding: 28px 20px;
                border-radius: var(--radius-md);
            }
            .article-body {
                font-size: 1rem;
            }
            .article-body h2 {
                font-size: 1.35rem;
            }
            .article-body h3 {
                font-size: 1.15rem;
            }
            .article-cta-section .cta-box {
                padding: 32px 20px;
            }
            .article-cta-section .cta-box h3 {
                font-size: 1.4rem;
            }
            .footer .footer-brand {
                font-size: 1.2rem;
            }
            .footer .social-links a {
                width: 36px;
                height: 36px;
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .article-hero h1 {
                font-size: 1.35rem;
            }
            .article-wrapper {
                padding: 20px 16px;
            }
            .article-body {
                font-size: 0.95rem;
            }
            .article-body h2 {
                font-size: 1.2rem;
            }
            .article-cta-section .cta-box h3 {
                font-size: 1.2rem;
            }
            .article-cta-section .cta-box .btn-cta {
                padding: 12px 28px;
                font-size: 1rem;
            }
            .footer {
                padding: 36px 0 16px;
            }
        }

        /* ===== Utility ===== */
        .text-accent {
            color: var(--accent);
        }
        .bg-accent {
            background: var(--accent);
        }
        .gap-2 {
            gap: 8px;
        }
        .gap-3 {
            gap: 16px;
        }
        .me-2 {
            margin-right: 8px;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .mt-3 {
            margin-top: 16px;
        }
        .mt-4 {
            margin-top: 24px;
        }

/* roulang page: category1 */
/* ========== 设计变量 ========== */
        :root {
            --primary: #c8a84e;
            --primary-dark: #a8882e;
            --primary-light: #e8c86e;
            --secondary: #1a1a2e;
            --secondary-light: #2a2a3e;
            --accent: #e74c3c;
            --accent-dark: #c0392b;
            --bg-dark: #0c0c18;
            --bg-card: #14142a;
            --bg-section: #111127;
            --text-light: #f0ece4;
            --text-muted: #a09888;
            --text-dark: #d0c8b8;
            --border-color: rgba(200, 168, 78, 0.2);
            --border-glow: rgba(200, 168, 78, 0.15);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(200, 168, 78, 0.06);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(200, 168, 78, 0.15);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ========== Reset / Base ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-base);
            background: var(--bg-dark);
            color: var(--text-light);
            line-height: 1.7;
            font-size: 1rem;
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-light);
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

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

        ::selection {
            background: var(--primary);
            color: var(--bg-dark);
        }

        /* ========== 容器 ========== */
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
            margin: 0 auto;
        }

        .container-sm {
            max-width: 920px;
        }

        /* ========== 导航 ========== */
        .navbar-main {
            background: rgba(12, 12, 24, 0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: var(--transition);
        }

        .navbar-main .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.45rem;
            font-weight: 700;
            color: var(--text-light);
            letter-spacing: 0.5px;
            text-decoration: none;
            transition: var(--transition);
        }
        .navbar-brand:hover {
            color: var(--primary);
        }

        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--bg-dark);
            font-size: 1.3rem;
            font-weight: 800;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }

        .navbar-toggler {
            display: none;
            background: none;
            border: 1px solid var(--border-color);
            color: var(--text-light);
            font-size: 1.4rem;
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
        }
        .navbar-toggler:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .navbar-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-item {
            position: relative;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            text-decoration: none;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--text-light);
            background: rgba(200, 168, 78, 0.08);
        }
        .nav-link.active {
            color: var(--primary);
            background: rgba(200, 168, 78, 0.12);
            box-shadow: inset 0 -2px 0 var(--primary);
        }
        .nav-link:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .nav-cta-btn {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--bg-dark) !important;
            font-weight: 600;
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            box-shadow: 0 4px 16px rgba(200, 168, 78, 0.25);
        }
        .nav-cta-btn:hover {
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            color: var(--bg-dark) !important;
            box-shadow: 0 6px 24px rgba(200, 168, 78, 0.35);
            transform: translateY(-1px);
        }

        /* ========== Hero ========== */
        .hero-category {
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: var(--bg-dark);
            overflow: hidden;
            padding: 100px 0 80px;
        }

        .hero-category .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
            transform: scale(1.05);
            filter: saturate(0.7) brightness(0.6);
        }

        .hero-category .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(12, 12, 24, 0.3) 0%, var(--bg-dark) 80%);
            z-index: 1;
        }

        .hero-category .container {
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 20px;
            background: rgba(200, 168, 78, 0.15);
            border: 1px solid rgba(200, 168, 78, 0.3);
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--primary);
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 24px;
            backdrop-filter: blur(6px);
        }

        .hero-title {
            font-size: clamp(2.4rem, 6vw, 4.2rem);
            font-weight: 800;
            line-height: 1.15;
            color: var(--text-light);
            margin-bottom: 20px;
            text-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }
        .hero-title .highlight {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-sub {
            font-size: clamp(1.05rem, 1.6vw, 1.25rem);
            color: var(--text-muted);
            max-width: 720px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }

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

        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--bg-dark);
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border: none;
            border-radius: var(--radius-sm);
            box-shadow: 0 4px 20px rgba(200, 168, 78, 0.3);
            transition: var(--transition);
            text-decoration: none;
            cursor: pointer;
        }
        .btn-primary-custom:hover {
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            color: var(--bg-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(200, 168, 78, 0.4);
        }
        .btn-primary-custom:active {
            transform: translateY(0);
        }

        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-light);
            background: transparent;
            border: 1.5px solid rgba(200, 168, 78, 0.4);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            text-decoration: none;
            cursor: pointer;
        }
        .btn-outline-custom:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(200, 168, 78, 0.08);
            transform: translateY(-2px);
        }
        .btn-outline-custom:active {
            transform: translateY(0);
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: center;
            margin-top: 50px;
            padding-top: 40px;
            border-top: 1px solid var(--border-color);
        }
        .hero-stat-item {
            text-align: center;
        }
        .hero-stat-item .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .hero-stat-item .label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ========== 通用板块 ========== */
        .section-padding {
            padding: 90px 0;
        }

        .section-title {
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 680px;
            margin-bottom: 48px;
            line-height: 1.7;
        }

        .section-divider {
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--primary-light));
            border-radius: 4px;
            margin-bottom: 24px;
        }

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

        .bg-section-card {
            background: var(--bg-card);
        }

        /* ========== 卡片 ========== */
        .card-feature {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            height: 100%;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }
        .card-feature:hover {
            border-color: rgba(200, 168, 78, 0.3);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .card-feature .icon-wrap {
            width: 54px;
            height: 54px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(200, 168, 78, 0.12);
            border-radius: var(--radius-sm);
            font-size: 1.6rem;
            color: var(--primary);
            margin-bottom: 20px;
            transition: var(--transition);
        }
        .card-feature:hover .icon-wrap {
            background: rgba(200, 168, 78, 0.2);
            transform: scale(1.05);
        }
        .card-feature h5 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 10px;
        }
        .card-feature p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 0;
            line-height: 1.7;
        }

        .card-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            background: var(--bg-card);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            height: 100%;
        }
        .card-image:hover {
            border-color: rgba(200, 168, 78, 0.25);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .card-image .card-img-top {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .card-image .card-body {
            padding: 20px 24px 24px;
        }
        .card-image .card-body h5 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 8px;
        }
        .card-image .card-body p {
            color: var(--text-muted);
            font-size: 0.92rem;
            margin-bottom: 0;
            line-height: 1.7;
        }

        .card-step {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            text-align: center;
            height: 100%;
            transition: var(--transition);
            position: relative;
        }
        .card-step:hover {
            border-color: rgba(200, 168, 78, 0.3);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .card-step .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--bg-dark);
            font-size: 1.3rem;
            font-weight: 800;
            margin-bottom: 18px;
            transition: var(--transition);
        }
        .card-step:hover .step-num {
            transform: scale(1.08);
        }
        .card-step h5 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 8px;
        }
        .card-step p {
            color: var(--text-muted);
            font-size: 0.92rem;
            margin-bottom: 0;
            line-height: 1.7;
        }
        .card-step .step-connector {
            position: absolute;
            top: 48px;
            right: -30px;
            width: 60px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), transparent);
            opacity: 0.3;
        }
        .card-step:last-child .step-connector {
            display: none;
        }

        /* ========== 徽章 / 标签 ========== */
        .badge-custom {
            display: inline-block;
            padding: 4px 14px;
            font-size: 0.78rem;
            font-weight: 600;
            border-radius: 50px;
            background: rgba(200, 168, 78, 0.15);
            color: var(--primary);
            border: 1px solid rgba(200, 168, 78, 0.2);
            letter-spacing: 0.3px;
        }
        .badge-accent {
            background: rgba(231, 76, 60, 0.15);
            color: var(--accent);
            border-color: rgba(231, 76, 60, 0.2);
        }

        /* ========== 统计数字 ========== */
        .stat-block {
            display: flex;
            flex-wrap: wrap;
            gap: 30px 60px;
            justify-content: center;
            padding: 40px 0;
        }
        .stat-item {
            text-align: center;
        }
        .stat-item .stat-num {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-item .stat-label {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ========== 图文区块 ========== */
        .content-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 40px;
        }
        .content-row .content-text {
            flex: 1 1 45%;
        }
        .content-row .content-image {
            flex: 1 1 45%;
        }
        .content-row .content-image img {
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
            width: 100%;
            height: auto;
        }

        /* ========== FAQ ========== */
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(200, 168, 78, 0.2);
        }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1.02rem;
            color: var(--text-light);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: var(--transition);
            user-select: none;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            font-size: 1.2rem;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question[aria-expanded="true"] .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.8;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-card), var(--secondary));
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 60px 40px;
            text-align: center;
            box-shadow: var(--shadow-card);
        }
        .cta-section h3 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 16px;
        }
        .cta-section p {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

        /* ========== 页脚 ========== */
        .footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
            margin-top: 20px;
        }
        .footer .footer-brand {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .brand-icon-sm {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--bg-dark);
            font-weight: 800;
            border-radius: 4px;
            font-size: 1.05rem;
        }
        .footer p {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .footer h6 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer ul li {
            margin-bottom: 8px;
        }
        .footer ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer ul li a:hover {
            color: var(--primary);
        }
        .social-links {
            display: flex;
            gap: 14px;
            margin-top: 16px;
        }
        .social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: rgba(200, 168, 78, 0.08);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-size: 1.15rem;
            transition: var(--transition);
        }
        .social-links a:hover {
            background: rgba(200, 168, 78, 0.18);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            margin-top: 40px;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--primary);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .card-step .step-connector {
                display: none;
            }
            .hero-category {
                min-height: 60vh;
                padding: 80px 0 60px;
            }
        }

        @media (max-width: 768px) {
            .navbar-toggler {
                display: block;
            }
            .navbar-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                padding: 16px 0 20px;
                gap: 4px;
                background: rgba(12, 12, 24, 0.98);
                border-top: 1px solid var(--border-color);
            }
            .navbar-nav.show {
                display: flex;
            }
            .navbar-main .container {
                flex-wrap: wrap;
                min-height: 64px;
            }
            .nav-link {
                padding: 12px 16px;
                width: 100%;
                justify-content: flex-start;
            }
            .nav-cta-btn {
                margin-top: 8px;
                text-align: center;
                justify-content: center;
            }

            .hero-category {
                min-height: auto;
                padding: 60px 0 50px;
            }
            .hero-title {
                font-size: 2rem;
            }
            .hero-sub {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 24px;
                padding-top: 28px;
            }
            .hero-stat-item .num {
                font-size: 1.5rem;
            }

            .section-padding {
                padding: 60px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }

            .card-feature {
                padding: 24px 20px;
            }
            .card-image .card-img-top {
                height: 160px;
            }

            .content-row {
                flex-direction: column;
            }
            .content-row .content-text,
            .content-row .content-image {
                flex: 1 1 100%;
            }

            .cta-section {
                padding: 40px 24px;
            }

            .stat-block {
                gap: 20px 32px;
            }
            .stat-item .stat-num {
                font-size: 2rem;
            }

            .footer {
                padding: 40px 0 20px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .hero-title {
                font-size: 1.6rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn-primary-custom,
            .hero-actions .btn-outline-custom {
                justify-content: center;
            }
            .hero-stats {
                gap: 16px;
            }
            .hero-stat-item .num {
                font-size: 1.3rem;
            }

            .section-title {
                font-size: 1.35rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 32px;
            }

            .card-feature {
                padding: 20px 16px;
            }
            .card-feature .icon-wrap {
                width: 44px;
                height: 44px;
                font-size: 1.3rem;
            }

            .cta-section h3 {
                font-size: 1.3rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }

            .faq-question {
                padding: 14px 16px;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.9rem;
            }

            .footer .footer-brand {
                font-size: 1.15rem;
            }
            .stat-item .stat-num {
                font-size: 1.6rem;
            }
        }

        /* ========== 辅助 ========== */
        .text-primary-custom {
            color: var(--primary);
        }
        .border-primary-custom {
            border-color: var(--primary);
        }
        .gap-sm {
            gap: 8px;
        }
        .gap-md {
            gap: 16px;
        }
        .gap-lg {
            gap: 32px;
        }
        .mt-30 {
            margin-top: 30px;
        }
        .mb-30 {
            margin-bottom: 30px;
        }
        .fw-700 {
            font-weight: 700;
        }