/* roulang page: index */
:root {
            --color-primary: #1e3a5f;
            --color-primary-light: #2c5f8a;
            --color-accent: #c49b4c;
            --color-accent-light: #d9b868;
            --color-accent-dark: #a07830;
            --color-bg: #fafaf8;
            --color-bg-alt: #f3f1ec;
            --color-bg-dark: #1a2d3d;
            --color-surface: #ffffff;
            --color-text: #2d2d2d;
            --color-text-soft: #6e6e6e;
            --color-text-light: #9a9a9a;
            --color-border: #e8e5df;
            --color-border-light: #f0ede8;
            --color-success: #3a8c5e;
            --color-warm: #d4824a;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --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);
            --transition-fast: 0.15s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.4s ease;
            --font-heading: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }

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

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

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            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,
        input,
        select,
        textarea {
            font-family: inherit;
        }

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

        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border-light);
            transition: box-shadow var(--transition-base);
            height: var(--nav-height);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
        }
        .logo-brand {
            font-family: var(--font-heading);
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo-brand a {
            color: inherit;
            text-decoration: none;
        }
        .logo-brand a:hover {
            color: var(--color-primary-light);
        }
        .logo-dot {
            display: inline-block;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--color-accent);
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 36px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li {
            margin: 0;
        }
        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-soft);
            text-decoration: none;
            padding: 8px 0;
            position: relative;
            transition: color var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--color-accent);
            border-radius: 1px;
            transform: scaleX(0);
            transition: transform var(--transition-base);
        }
        .nav-links a:hover {
            color: var(--color-primary);
        }
        .nav-links a:hover::after {
            transform: scaleX(1);
        }
        .nav-links a.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .nav-links a.active::after {
            transform: scaleX(1);
            background: var(--color-primary);
        }
        .nav-cta-btn {
            display: inline-block;
            padding: 10px 22px;
            background: var(--color-primary);
            color: #fff !important;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-base);
            letter-spacing: 0.02em;
            border: none;
            cursor: pointer;
            text-decoration: none;
            white-space: nowrap;
        }
        .nav-cta-btn:hover {
            background: var(--color-primary-light);
            color: #fff !important;
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }
        .nav-cta-btn::after {
            display: none !important;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            color: var(--color-primary);
            font-size: 1.6rem;
            line-height: 1;
        }
        .mobile-toggle:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            min-height: 620px;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, rgba(26, 45, 61, 0.88) 0%, rgba(30, 58, 95, 0.82) 40%, rgba(44, 95, 138, 0.78) 100%), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            background-blend-mode: overlay;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(196, 155, 76, 0.15) 0%, transparent 60%);
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
            padding: 60px 0;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 50px;
            color: #e8dcc8;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }
        .hero-title {
            font-size: 3rem;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: -0.02em;
            margin-bottom: 18px;
            line-height: 1.2;
        }
        .hero-subtitle {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 560px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn-hero-primary {
            display: inline-block;
            padding: 14px 32px;
            background: var(--color-accent);
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition-base);
            text-decoration: none;
            letter-spacing: 0.02em;
            border: none;
            cursor: pointer;
        }
        .btn-hero-primary:hover {
            background: var(--color-accent-light);
            color: #fff;
            box-shadow: 0 8px 28px rgba(196, 155, 76, 0.35);
            transform: translateY(-2px);
        }
        .btn-hero-outline {
            display: inline-block;
            padding: 14px 32px;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.55);
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition-base);
            text-decoration: none;
            letter-spacing: 0.02em;
        }
        .btn-hero-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
        }

        /* ========== SECTION COMMONS ========== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--color-bg-alt);
        }
        .section-dark {
            background: var(--color-bg-dark);
            color: #e0dcd5;
        }
        .section-dark h2,
        .section-dark h3 {
            color: #ffffff;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-accent);
            margin-bottom: 10px;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--color-primary);
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--color-text-soft);
            max-width: 620px;
            margin-bottom: 40px;
            line-height: 1.7;
        }
        .section-dark .section-subtitle {
            color: #c4bfb4;
        }
        .text-center {
            text-align: center;
        }
        .mx-auto {
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== VALUE CARDS ========== */
        .value-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            height: 100%;
            text-align: center;
        }
        .value-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .value-icon-circle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: rgba(30, 58, 95, 0.06);
            color: var(--color-primary);
            font-size: 1.5rem;
            margin-bottom: 18px;
            transition: all var(--transition-base);
        }
        .value-card:hover .value-icon-circle {
            background: var(--color-primary);
            color: #fff;
        }
        .value-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-primary);
        }
        .value-card p {
            font-size: 0.95rem;
            color: var(--color-text-soft);
            margin: 0;
            line-height: 1.6;
        }

        /* ========== STATS ========== */
        .stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            justify-content: center;
        }
        .stat-item {
            flex: 1 1 180px;
            text-align: center;
            padding: 28px 20px;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }
        .stat-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .stat-number {
            font-size: 2.6rem;
            font-weight: 700;
            color: var(--color-accent);
            letter-spacing: -0.02em;
            line-height: 1;
            margin-bottom: 6px;
        }
        .stat-label {
            font-size: 0.95rem;
            color: var(--color-text-soft);
        }
        .section-dark .stat-item {
            background: rgba(255, 255, 255, 0.05);
            border-color: rgba(255, 255, 255, 0.1);
            color: #e0dcd5;
        }
        .section-dark .stat-number {
            color: var(--color-accent-light);
        }
        .section-dark .stat-label {
            color: #c4bfb4;
        }

        /* ========== SERVICE CARDS ========== */
        .service-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-base);
            height: 100%;
        }
        .service-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .service-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .service-card-body {
            padding: 22px 20px;
        }
        .service-card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--color-primary);
        }
        .service-card-body p {
            font-size: 0.92rem;
            color: var(--color-text-soft);
            margin: 0;
            line-height: 1.6;
        }
        .service-card-tag {
            display: inline-block;
            padding: 3px 10px;
            background: rgba(196, 155, 76, 0.1);
            color: var(--color-accent-dark);
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }

        /* ========== CMS LIST ========== */
        .cms-list-item {
            display: flex;
            align-items: flex-start;
            gap: 18px;
            padding: 18px 0;
            border-bottom: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
        }
        .cms-list-item:first-child {
            padding-top: 0;
        }
        .cms-list-item:last-child {
            border-bottom: none;
        }
        .cms-list-item:hover {
            background: rgba(255, 255, 255, 0.04);
            padding-left: 8px;
            border-radius: var(--radius-sm);
        }
        .cms-list-date {
            flex-shrink: 0;
            font-size: 0.82rem;
            color: var(--color-text-light);
            min-width: 90px;
            padding-top: 2px;
            letter-spacing: 0.02em;
        }
        .cms-list-content {
            flex: 1;
            min-width: 0;
        }
        .cms-list-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 4px;
            display: block;
            text-decoration: none;
            line-height: 1.4;
        }
        .cms-list-title:hover {
            color: var(--color-accent-dark);
        }
        .cms-list-summary {
            font-size: 0.88rem;
            color: var(--color-text-soft);
            margin: 0;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .cms-empty {
            text-align: center;
            padding: 40px 20px;
            color: var(--color-text-soft);
            font-size: 0.95rem;
        }

        /* ========== PROCESS / TIMELINE ========== */
        .process-steps {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            position: relative;
        }
        .process-step {
            flex: 1 1 200px;
            text-align: center;
            position: relative;
            padding: 20px 16px;
        }
        .process-step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            margin-bottom: 14px;
            position: relative;
            z-index: 2;
            transition: all var(--transition-base);
        }
        .process-step:hover .process-step-num {
            background: var(--color-accent);
            transform: scale(1.1);
        }
        .process-step h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 4px;
        }
        .process-step p {
            font-size: 0.88rem;
            color: var(--color-text-soft);
            margin: 0;
            line-height: 1.5;
        }
        .section-dark .process-step h4 {
            color: #fff;
        }
        .section-dark .process-step p {
            color: #c4bfb4;
        }
        .process-connector {
            display: none;
        }
        @media (min-width: 768px) {
            .process-steps {
                gap: 0;
            }
            .process-step {
                flex: 1;
            }
            .process-step::after {
                content: '';
                position: absolute;
                top: 44px;
                left: 60%;
                width: 80%;
                height: 2px;
                background: var(--color-border);
                z-index: 1;
            }
            .process-step:last-child::after {
                display: none;
            }
            .section-dark .process-step::after {
                background: rgba(255, 255, 255, 0.2);
            }
        }

        /* ========== FAQ ACCORDION ========== */
        .faq-accordion {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .faq-accordion .accordion-item {
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md);
            margin-bottom: 10px;
            overflow: hidden;
            background: var(--color-surface);
            transition: all var(--transition-fast);
        }
        .faq-accordion .accordion-item:hover {
            border-color: var(--color-border);
        }
        .faq-accordion .accordion-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-primary);
            padding: 18px 22px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            text-decoration: none;
            transition: all var(--transition-fast);
            line-height: 1.4;
        }
        .faq-accordion .accordion-title:hover {
            color: var(--color-primary-light);
            background: rgba(30, 58, 95, 0.02);
        }
        .faq-accordion .accordion-title::after {
            content: '\f107';
            font-family: 'FontAwesome';
            font-size: 1rem;
            color: var(--color-text-light);
            transition: transform var(--transition-base);
            flex-shrink: 0;
            margin-left: 12px;
        }
        .faq-accordion .is-active .accordion-title::after {
            transform: rotate(180deg);
            color: var(--color-accent);
        }
        .faq-accordion .accordion-content {
            padding: 0 22px 18px;
            color: var(--color-text-soft);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-accordion .is-active .accordion-title {
            color: var(--color-accent-dark);
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            padding: 70px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 30%, rgba(196, 155, 76, 0.2) 0%, transparent 55%);
            pointer-events: none;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.05rem;
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-cta-large {
            display: inline-block;
            padding: 16px 38px;
            background: var(--color-accent);
            color: #fff;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            transition: all var(--transition-base);
            text-decoration: none;
            letter-spacing: 0.03em;
            position: relative;
            z-index: 1;
            border: none;
            cursor: pointer;
        }
        .btn-cta-large:hover {
            background: #fff;
            color: var(--color-primary);
            box-shadow: 0 10px 32px rgba(0, 0, 0, 0.2);
            transform: translateY(-2px);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #141e28;
            color: #b0aca5;
            padding: 50px 0 30px;
            font-size: 0.9rem;
            line-height: 1.7;
        }
        .footer-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            justify-content: space-between;
            margin-bottom: 32px;
        }
        .footer-col {
            flex: 1 1 200px;
            min-width: 160px;
        }
        .footer-col h4 {
            color: #ffffff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 6px;
        }
        .footer-col ul li a {
            color: #b0aca5;
            text-decoration: none;
            transition: color var(--transition-fast);
            font-size: 0.9rem;
        }
        .footer-col ul li a:hover {
            color: #ffffff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: #8a8680;
            letter-spacing: 0.02em;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 2.4rem;
            }
            .hero-section {
                min-height: 500px;
            }
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .nav-links {
                gap: 24px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --nav-height: 60px;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                gap: 0;
                padding: 12px 24px;
                box-shadow: var(--shadow-lg);
                border-bottom: 1px solid var(--color-border-light);
                z-index: 999;
            }
            .nav-links.is-open {
                display: flex;
            }
            .nav-links a {
                padding: 14px 0;
                border-bottom: 1px solid var(--color-border-light);
                width: 100%;
                font-size: 1rem;
            }
            .nav-links a::after {
                display: none;
            }
            .nav-links a.active {
                color: var(--color-accent);
            }
            .nav-cta-btn {
                margin-top: 8px;
                text-align: center;
                width: 100%;
                display: block;
                border-radius: var(--radius-md);
            }
            .hero-title {
                font-size: 1.9rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .hero-section {
                min-height: 440px;
            }
            .hero-content {
                padding: 40px 0;
            }
            .section {
                padding: 44px 0;
            }
            .section-title {
                font-size: 1.55rem;
            }
            .btn-hero-primary,
            .btn-hero-outline {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .stat-number {
                font-size: 2rem;
            }
            .service-card-img {
                height: 160px;
            }
            .cms-list-item {
                flex-direction: column;
                gap: 4px;
            }
            .cms-list-date {
                min-width: auto;
            }
            .footer-grid {
                gap: 20px;
            }
            .footer-col {
                flex: 1 1 140px;
            }
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
        }
        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.55rem;
            }
            .hero-subtitle {
                font-size: 0.9rem;
            }
            .hero-actions {
                flex-direction: column;
                gap: 10px;
            }
            .hero-actions .btn-hero-primary,
            .hero-actions .btn-hero-outline {
                width: 100%;
                text-align: center;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .value-card {
                padding: 20px 16px;
            }
            .process-step::after {
                display: none !important;
            }
            .process-steps {
                flex-direction: column;
                align-items: center;
            }
            .process-step {
                flex: 1 1 auto;
            }
            .stat-item {
                flex: 1 1 120px;
                padding: 18px 12px;
            }
            .stat-number {
                font-size: 1.6rem;
            }
            .footer-grid {
                flex-direction: column;
                gap: 16px;
            }
            .footer-col {
                flex: 1 1 auto;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #1a3a4a;
            --color-primary-light: #1e5f5f;
            --color-accent: #c8963e;
            --color-accent-light: #e0b865;
            --color-bg: #fafaf8;
            --color-bg-warm: #f5f2ec;
            --color-bg-dark: #1a2d36;
            --color-text: #2c2c2c;
            --color-text-weak: #6b6b6b;
            --color-text-light: #9a9790;
            --color-border: #e5e1da;
            --color-border-light: #ede9e3;
            --color-white: #ffffff;
            --color-success: #3a7d5f;
            --color-card-shadow: rgba(26, 58, 74, 0.06);
            --color-card-shadow-hover: rgba(26, 58, 74, 0.14);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(26, 58, 74, 0.05);
            --shadow-md: 0 4px 18px rgba(26, 58, 74, 0.07);
            --shadow-lg: 0 8px 32px rgba(26, 58, 74, 0.10);
            --shadow-xl: 0 14px 44px rgba(26, 58, 74, 0.13);
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-heading: 'PingFang SC', 'Hiragino Sans GB', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
            --font-body: 'PingFang SC', 'Hiragino Sans GB', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
            --nav-height: 68px;
            --section-gap-lg: 80px;
            --section-gap-md: 56px;
            --section-gap-sm: 40px;
        }

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

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

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

        a { text-decoration: none; color: inherit; transition: color var(--transition-fast); }
        a:hover { color: var(--color-accent); }
        img { max-width: 100%; height: auto; display: block; }
        button { cursor: pointer; font-family: inherit; }
        ul, ol { list-style: none; padding: 0; margin: 0; }
        input, textarea, select { font-family: inherit; }

        .container-custom {
            max-width: 1180px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ========== HEADER & NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--color-border-light);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-base);
        }
        .site-header.scrolled { box-shadow: var(--shadow-md); }
        .header-inner { display: flex; align-items: center; justify-content: space-between; width: 100%; }
        .logo-wrap { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
        .logo-wrap a {
            font-family: var(--font-heading);
            font-size: 1.22rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            color: var(--color-primary);
            white-space: nowrap;
            transition: color var(--transition-fast);
        }
        .logo-wrap a:hover { color: var(--color-primary-light); }
        .logo-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-accent);
            flex-shrink: 0;
        }
        .nav-links { display: flex; align-items: center; gap: 6px; }
        .nav-links li a {
            display: inline-block;
            padding: 8px 16px;
            font-size: 0.92rem;
            font-weight: 500;
            letter-spacing: 0.02em;
            color: var(--color-text-weak);
            border-radius: 20px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .nav-links li a:hover { color: var(--color-primary); background: rgba(26, 58, 74, 0.04); }
        .nav-links li a.active {
            color: var(--color-primary);
            font-weight: 600;
            background: rgba(26, 58, 74, 0.06);
        }
        .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2.5px;
            border-radius: 2px;
            background: var(--color-accent);
        }
        .nav-cta-btn {
            background: var(--color-accent) !important;
            color: #fff !important;
            font-weight: 600 !important;
            padding: 9px 20px !important;
            border-radius: 22px !important;
            transition: all var(--transition-base) !important;
            box-shadow: 0 2px 8px rgba(200, 150, 62, 0.22);
        }
        .nav-cta-btn:hover {
            background: var(--color-accent-light) !important;
            box-shadow: 0 4px 16px rgba(200, 150, 62, 0.35) !important;
            transform: translateY(-1px);
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--color-primary);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }
        .mobile-menu-toggle:hover { background: rgba(26, 58, 74, 0.05); }
        @media (max-width: 768px) {
            .nav-links { display: none; flex-direction: column; position: absolute; top: var(--nav-height); left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--color-border-light); padding: 12px 0; gap: 2px; box-shadow: var(--shadow-lg); }
            .nav-links.show { display: flex; }
            .nav-links li a { display: block; padding: 12px 24px; border-radius: 0; font-size: 0.95rem; }
            .nav-links li a.active::after { display: none; }
            .nav-links li a.active { border-left: 3px solid var(--color-accent); background: rgba(26, 58, 74, 0.03); }
            .nav-cta-btn { margin: 8px 20px; text-align: center; border-radius: 22px !important; }
            .mobile-menu-toggle { display: block; }
        }

        /* ========== SECTION BASE ========== */
        .section { padding: var(--section-gap-lg) 0; }
        .section-sm { padding: var(--section-gap-sm) 0; }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-accent);
            background: rgba(200, 150, 62, 0.08);
            padding: 5px 14px;
            border-radius: 20px;
            margin-bottom: 14px;
        }
        .section-title {
            font-family: var(--font-heading);
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.02em;
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--color-text-weak);
            line-height: 1.7;
            max-width: 620px;
        }
        .text-center { text-align: center; }
        .mx-auto { margin-left: auto; margin-right: auto; }
        @media (max-width: 768px) {
            .section { padding: var(--section-gap-md) 0; }
            .section-title { font-size: 1.6rem; }
            .section-subtitle { font-size: 0.95rem; }
        }

        /* ========== HERO ========== */
        .hero-category {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background: var(--color-bg-dark);
            padding: 80px 0;
        }
        .hero-category .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center 35%;
            opacity: 0.38;
            z-index: 0;
        }
        .hero-category .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(160deg, rgba(26, 45, 54, 0.82) 0%, rgba(26, 58, 74, 0.55) 45%, rgba(30, 95, 95, 0.40) 100%);
            z-index: 1;
        }
        .hero-category .hero-content {
            position: relative;
            z-index: 2;
            max-width: 700px;
        }
        .hero-category .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--color-accent-light);
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.18);
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: 18px;
        }
        .hero-category .hero-badge i { font-size: 0.7rem; }
        .hero-category h1 {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.03em;
            line-height: 1.25;
            margin-bottom: 16px;
        }
        .hero-category .hero-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.82);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 540px;
        }
        .hero-category .hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 12px 26px;
            border-radius: 26px;
            border: none;
            letter-spacing: 0.03em;
            transition: all var(--transition-base);
            box-shadow: 0 4px 14px rgba(200, 150, 62, 0.30);
        }
        .btn-primary:hover { background: var(--color-accent-light); transform: translateY(-2px); box-shadow: 0 6px 22px rgba(200, 150, 62, 0.40); color: #fff; }
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            background: transparent;
            color: #fff;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 12px 24px;
            border-radius: 26px;
            border: 1.5px solid rgba(255, 255, 255, 0.45);
            letter-spacing: 0.03em;
            transition: all var(--transition-base);
        }
        .btn-outline-light:hover { background: rgba(255, 255, 255, 0.10); border-color: rgba(255, 255, 255, 0.7); color: #fff; }
        @media (max-width: 768px) {
            .hero-category { min-height: 400px; padding: 50px 0; }
            .hero-category h1 { font-size: 1.8rem; }
            .hero-category .hero-desc { font-size: 0.95rem; }
        }

        /* ========== SERVICE CARDS ========== */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }
        .service-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-slow);
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-border);
        }
        .service-card .card-img-wrap {
            position: relative;
            height: 180px;
            overflow: hidden;
        }
        .service-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .service-card:hover .card-img-wrap img { transform: scale(1.04); }
        .service-card .card-img-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--color-primary);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            padding: 4px 10px;
            border-radius: 11px;
        }
        .service-card .card-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
        .service-card .card-body h3 {
            font-family: var(--font-heading);
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
            letter-spacing: 0.02em;
        }
        .service-card .card-body p {
            font-size: 0.88rem;
            color: var(--color-text-weak);
            line-height: 1.6;
            flex: 1;
        }
        .service-card .card-link {
            margin-top: 14px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent);
            letter-spacing: 0.03em;
            transition: color var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .service-card .card-link:hover { color: var(--color-primary-light); }
        @media (max-width: 1024px) { .services-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 520px) { .services-grid { grid-template-columns: 1fr; } }

        /* ========== PROCESS PATH ========== */
        .process-section { background: var(--color-bg-warm); }
        .process-path {
            display: flex;
            align-items: flex-start;
            gap: 0;
            position: relative;
            flex-wrap: wrap;
            justify-content: center;
        }
        .process-step {
            flex: 1;
            min-width: 190px;
            max-width: 240px;
            text-align: center;
            position: relative;
            padding: 20px 16px;
        }
        .process-step .step-node {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: #fff;
            border: 3px solid var(--color-primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--color-primary-light);
            position: relative;
            z-index: 2;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
        }
        .process-step:hover .step-node {
            background: var(--color-primary-light);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: scale(1.06);
        }
        .process-step .step-connector {
            position: absolute;
            top: 50px;
            left: calc(50% + 30px);
            width: calc(100% - 60px);
            height: 2px;
            border-top: 2px dashed var(--color-border);
            z-index: 1;
        }
        .process-step:last-child .step-connector { display: none; }
        .process-step h4 {
            font-family: var(--font-heading);
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 6px;
        }
        .process-step p {
            font-size: 0.84rem;
            color: var(--color-text-weak);
            line-height: 1.5;
        }
        @media (max-width: 768px) {
            .process-path { flex-direction: column; align-items: center; gap: 20px; }
            .process-step { max-width: 100%; }
            .process-step .step-connector {
                top: auto;
                bottom: -14px;
                left: 50%;
                transform: translateX(-50%);
                width: 2px;
                height: 28px;
                border-top: none;
                border-left: 2px dashed var(--color-border);
            }
        }

        /* ========== ADVANTAGES STRIP ========== */
        .advantages-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .advantage-item {
            text-align: center;
            padding: 28px 16px;
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }
        .advantage-item:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
        .advantage-item .adv-icon {
            font-size: 2rem;
            color: var(--color-accent);
            margin-bottom: 10px;
        }
        .advantage-item .adv-number {
            font-family: var(--font-heading);
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.02em;
        }
        .advantage-item .adv-label {
            font-size: 0.9rem;
            color: var(--color-text-weak);
            margin-top: 4px;
        }
        @media (max-width: 768px) { .advantages-strip { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 480px) { .advantages-strip { grid-template-columns: 1fr; } }

        /* ========== SCENARIO CARDS ========== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }
        .scenario-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-slow);
        }
        .scenario-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
        .scenario-card .sc-img-wrap { height: 170px; overflow: hidden; position: relative; }
        .scenario-card .sc-img-wrap img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition-slow); }
        .scenario-card:hover .sc-img-wrap img { transform: scale(1.03); }
        .scenario-card .sc-img-wrap .sc-region-tag {
            position: absolute;
            bottom: 12px;
            right: 12px;
            background: rgba(26, 58, 74, 0.85);
            color: #fff;
            font-size: 0.72rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            padding: 4px 10px;
            border-radius: 12px;
            backdrop-filter: blur(4px);
        }
        .scenario-card .sc-body { padding: 20px; }
        .scenario-card .sc-body h4 {
            font-family: var(--font-heading);
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 7px;
        }
        .scenario-card .sc-body p {
            font-size: 0.85rem;
            color: var(--color-text-weak);
            line-height: 1.6;
        }
        @media (max-width: 768px) { .scenario-grid { grid-template-columns: 1fr 1fr; } }
        @media (max-width: 480px) { .scenario-grid { grid-template-columns: 1fr; } }

        /* ========== FAQ ========== */
        .faq-section { background: var(--color-bg-warm); }
        .faq-list { max-width: 780px; margin: 0 auto; }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            margin-bottom: 10px;
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover { box-shadow: var(--shadow-sm); }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            text-align: left;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-primary);
            letter-spacing: 0.02em;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: background var(--transition-fast);
            font-family: var(--font-heading);
        }
        .faq-question:hover { background: rgba(26, 58, 74, 0.02); }
        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 0.8rem;
            color: var(--color-accent);
            transition: transform var(--transition-base);
        }
        .faq-item.open .faq-question .faq-icon { transform: rotate(45deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 22px;
        }
        .faq-item.open .faq-answer { max-height: 300px; padding: 0 22px 18px; }
        .faq-answer p { font-size: 0.9rem; color: var(--color-text-weak); line-height: 1.7; }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: var(--color-primary);
            color: #fff;
            text-align: center;
            padding: 70px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            z-index: 0;
        }
        .cta-section .cta-inner { position: relative; z-index: 1; }
        .cta-section h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.78);
            max-width: 520px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }
        .btn-cta-large {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-accent);
            color: #fff;
            font-weight: 700;
            font-size: 1.02rem;
            padding: 14px 34px;
            border-radius: 28px;
            border: none;
            letter-spacing: 0.04em;
            transition: all var(--transition-base);
            box-shadow: 0 6px 20px rgba(200, 150, 62, 0.35);
        }
        .btn-cta-large:hover { background: var(--color-accent-light); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(200, 150, 62, 0.45); color: #fff; }
        @media (max-width: 768px) {
            .cta-section { padding: 48px 0; }
            .cta-section h2 { font-size: 1.5rem; }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #1a252c;
            color: #c5c0b8;
            padding: 50px 0 0;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 32px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-col h4 {
            font-family: var(--font-heading);
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.04em;
            margin-bottom: 14px;
        }
        .footer-col ul li { margin-bottom: 7px; }
        .footer-col ul li a { color: #b0aca5; font-size: 0.87rem; transition: color var(--transition-fast); }
        .footer-col ul li a:hover { color: var(--color-accent-light); }
        .footer-bottom {
            text-align: center;
            padding: 18px 0;
            color: #8a857e;
            font-size: 0.8rem;
            letter-spacing: 0.03em;
        }
        @media (max-width: 768px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
        @media (max-width: 480px) { .footer-grid { grid-template-columns: 1fr; } }

        /* ========== UTILITY ========== */
        .section-header { text-align: center; margin-bottom: 40px; }
        .section-header .section-title { margin-bottom: 8px; }
        .fade-up {
            opacity: 0;
            transform: translateY(28px);
            animation: fadeUpIn 0.7s ease forwards;
        }
        @keyframes fadeUpIn {
            to { opacity: 1; transform: translateY(0); }
        }
        .delay-1 { animation-delay: 0.1s; }
        .delay-2 { animation-delay: 0.2s; }
        .delay-3 { animation-delay: 0.3s; }
        .delay-4 { animation-delay: 0.4s; }

/* roulang page: article */
:root {
            --color-primary: #1a3655;
            --color-primary-light: #234b73;
            --color-accent: #b8863c;
            --color-accent-light: #d4a55a;
            --color-bg: #fafaf7;
            --color-surface: #ffffff;
            --color-text: #1e1e1e;
            --color-text-soft: #5c5c5c;
            --color-text-muted: #8a8780;
            --color-border: #e4e0d8;
            --color-border-light: #f0ede6;
            --color-shadow: rgba(26,54,85,0.06);
            --color-shadow-md: rgba(26,54,85,0.10);
            --color-shadow-lg: rgba(26,54,85,0.16);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --font-display: 'Georgia', 'Times New Roman', 'Noto Serif SC', serif;
            --font-body: 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            --transition-fast: 0.18s ease;
            --transition-md: 0.28s ease;
            --transition-slow: 0.40s ease;
            --max-width-main: 1140px;
            --max-width-article: 760px;
        }

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

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

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-body);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            overflow-x: hidden;
        }

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

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

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

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

        h1, h2, h3, h4, h5, h6 {
            margin: 0 0 0.6em;
            line-height: 1.35;
            color: var(--color-primary);
            font-weight: 700;
        }
        h1 { font-size: clamp(1.6rem, 3.5vw, 2.2rem); }
        h2 { font-size: clamp(1.35rem, 2.8vw, 1.75rem); }
        h3 { font-size: clamp(1.1rem, 2.2vw, 1.35rem); }
        h4 { font-size: 1.05rem; }

        .container-custom {
            max-width: var(--max-width-main);
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--color-border-light);
            padding: 0;
            transition: box-shadow var(--transition-md);
        }
        .site-header.scrolled {
            box-shadow: 0 2px 18px var(--color-shadow-md);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: var(--max-width-main);
            margin: 0 auto;
            padding: 0.7rem 1.5rem;
            gap: 1.5rem;
        }

        .logo-wrap {
            flex-shrink: 0;
        }
        .logo-text {
            font-family: var(--font-display);
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }
        .logo-text:hover {
            color: var(--color-accent);
        }
        .logo-dot {
            display: inline-block;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--color-accent);
            margin-left: 3px;
            vertical-align: middle;
            position: relative;
            top: -2px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 1.8rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            font-size: 0.93rem;
            font-weight: 500;
            color: var(--color-text-soft);
            position: relative;
            padding: 0.35rem 0;
            transition: color var(--transition-fast);
            white-space: nowrap;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
            transition: width var(--transition-md);
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--color-primary);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-cta-btn {
            display: inline-block;
            padding: 0.5rem 1.3rem !important;
            background: var(--color-accent);
            color: #fff !important;
            border-radius: 30px;
            font-weight: 600 !important;
            font-size: 0.88rem !important;
            transition: all var(--transition-md) !important;
            box-shadow: 0 3px 12px rgba(184,134,60,0.28);
        }
        .nav-cta-btn:hover {
            background: var(--color-accent-light) !important;
            box-shadow: 0 5px 20px rgba(184,134,60,0.40);
            transform: translateY(-1px);
            color: #fff !important;
        }
        .nav-cta-btn::after { display: none !important; }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: 6px;
            cursor: pointer;
            z-index: 110;
        }
        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--color-primary);
            border-radius: 3px;
            transition: all var(--transition-fast);
        }
        .nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-bar {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            padding: 0.7rem 0;
        }
        .breadcrumb-list {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-wrap: wrap;
            list-style: none;
            margin: 0;
            padding: 0;
            font-size: 0.85rem;
        }
        .breadcrumb-list li {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            color: var(--color-text-muted);
        }
        .breadcrumb-list a {
            color: var(--color-text-soft);
            transition: color var(--transition-fast);
        }
        .breadcrumb-list a:hover {
            color: var(--color-accent);
        }
        .breadcrumb-sep {
            color: var(--color-border);
            font-size: 0.7rem;
        }

        /* ========== ARTICLE HEADER ========== */
        .article-header-section {
            padding: 2.5rem 0 1rem;
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
        }
        .article-meta-row {
            display: flex;
            align-items: center;
            gap: 1rem;
            flex-wrap: wrap;
            margin-bottom: 0.8rem;
        }
        .article-category-tag {
            display: inline-block;
            padding: 0.3rem 0.85rem;
            background: rgba(184,134,60,0.10);
            color: var(--color-accent);
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.03em;
        }
        .article-date-text {
            font-size: 0.85rem;
            color: var(--color-text-muted);
        }
        .article-date-text i {
            margin-right: 4px;
        }
        .article-hero-image {
            width: 100%;
            max-height: 460px;
            object-fit: cover;
            border-radius: var(--radius-lg);
            margin-top: 1.2rem;
            box-shadow: 0 4px 22px var(--color-shadow-md);
        }

        /* ========== ARTICLE BODY ========== */
        .article-body-section {
            padding: 2.5rem 0 3rem;
        }
        .article-content-wrapper {
            max-width: var(--max-width-article);
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .article-body {
            font-size: 1.06rem;
            line-height: 1.85;
            color: var(--color-text);
        }
        .article-body h2 {
            margin-top: 2.2rem;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--color-border-light);
            color: var(--color-primary);
        }
        .article-body h3 {
            margin-top: 1.6rem;
            margin-bottom: 0.7rem;
            color: var(--color-primary-light);
        }
        .article-body p {
            margin-bottom: 1.15rem;
        }
        .article-body ul,
        .article-body ol {
            margin: 0.8rem 0 1.2rem 1.5rem;
        }
        .article-body ul {
            list-style: disc;
        }
        .article-body ol {
            list-style: decimal;
        }
        .article-body li {
            margin-bottom: 0.45rem;
            padding-left: 0.3rem;
        }
        .article-body blockquote {
            margin: 1.5rem 0;
            padding: 1.2rem 1.6rem;
            background: rgba(26,54,85,0.025);
            border-left: 4px solid var(--color-accent);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--color-text-soft);
            font-style: italic;
        }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 1.5rem auto;
            box-shadow: 0 3px 16px var(--color-shadow);
        }
        .article-body a {
            color: var(--color-accent);
            font-weight: 500;
            text-decoration: underline;
            text-underline-offset: 3px;
            text-decoration-color: rgba(184,134,60,0.3);
        }
        .article-body a:hover {
            text-decoration-color: var(--color-accent);
        }
        .article-body code {
            background: #f5f3ee;
            padding: 0.18em 0.45em;
            border-radius: 4px;
            font-size: 0.9em;
            color: #8b5a2b;
        }
        .article-body pre {
            background: #f9f8f5;
            padding: 1.2rem 1.5rem;
            border-radius: var(--radius-md);
            overflow-x: auto;
            border: 1px solid var(--color-border);
            margin: 1.2rem 0;
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .article-divider {
            margin: 2rem 0;
            border: none;
            height: 1px;
            background: var(--color-border-light);
        }
        .article-back-link {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-primary);
            margin-top: 1.5rem;
            transition: color var(--transition-fast), gap var(--transition-fast);
        }
        .article-back-link:hover {
            color: var(--color-accent);
            gap: 0.65rem;
        }
        .article-back-link i {
            font-size: 0.8rem;
        }

        /* Not Found State */
        .not-found-state {
            text-align: center;
            padding: 3rem 1.5rem;
            max-width: 520px;
            margin: 0 auto;
        }
        .not-found-icon {
            font-size: 3.5rem;
            color: var(--color-border);
            margin-bottom: 1rem;
        }
        .not-found-state h2 {
            color: var(--color-text-soft);
            margin-bottom: 0.6rem;
        }
        .not-found-state p {
            color: var(--color-text-muted);
            margin-bottom: 1.5rem;
        }

        /* ========== RELATED SERVICES ========== */
        .related-section {
            padding: 3rem 0;
            background: var(--color-surface);
            border-top: 1px solid var(--color-border-light);
        }
        .related-section .section-label {
            text-align: center;
            font-size: 0.82rem;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-accent);
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        .related-section .section-title {
            text-align: center;
            margin-bottom: 2.2rem;
            color: var(--color-primary);
        }
        .service-card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
            max-width: var(--max-width-main);
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .service-card {
            background: var(--color-bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 2px 14px var(--color-shadow);
            transition: all var(--transition-md);
            border: 1px solid var(--color-border-light);
        }
        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 30px var(--color-shadow-lg);
            border-color: var(--color-border);
        }
        .service-card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .service-card-body {
            padding: 1.2rem 1.3rem 1.4rem;
        }
        .service-card-body h4 {
            margin-bottom: 0.4rem;
            font-size: 1.05rem;
            color: var(--color-primary);
        }
        .service-card-body p {
            font-size: 0.88rem;
            color: var(--color-text-soft);
            line-height: 1.55;
            margin-bottom: 0.8rem;
        }
        .service-card-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            transition: gap var(--transition-fast);
        }
        .service-card-link:hover {
            gap: 0.55rem;
            color: var(--color-accent-light);
        }
        .service-card-link i {
            font-size: 0.7rem;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: 3.5rem 0;
            background: linear-gradient(135deg, var(--color-primary) 0%, #0f2840 100%);
            color: #fff;
            text-align: center;
            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: 0.10;
            pointer-events: none;
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            max-width: 600px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .cta-inner h2 {
            color: #fff;
            margin-bottom: 0.8rem;
            font-size: clamp(1.4rem, 3vw, 1.8rem);
        }
        .cta-inner p {
            color: rgba(255,255,255,0.78);
            margin-bottom: 1.6rem;
            font-size: 1rem;
            line-height: 1.7;
        }
        .cta-btn-group {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-primary-cta {
            display: inline-block;
            padding: 0.75rem 2rem;
            background: var(--color-accent);
            color: #fff;
            border-radius: 30px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition-md);
            box-shadow: 0 4px 16px rgba(184,134,60,0.35);
            border: none;
        }
        .btn-primary-cta:hover {
            background: var(--color-accent-light);
            box-shadow: 0 6px 24px rgba(184,134,60,0.50);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-outline-cta {
            display: inline-block;
            padding: 0.75rem 2rem;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.5);
            border-radius: 30px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition-md);
        }
        .btn-outline-cta:hover {
            border-color: #fff;
            background: rgba(255,255,255,0.08);
            color: #fff;
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: 3rem 0;
            background: var(--color-bg);
        }
        .faq-section .section-label {
            text-align: center;
            font-size: 0.82rem;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-accent);
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        .faq-section .section-title {
            text-align: center;
            margin-bottom: 2rem;
            color: var(--color-primary);
        }
        .faq-grid {
            max-width: 760px;
            margin: 0 auto;
            padding: 0 1.5rem;
            display: flex;
            flex-direction: column;
            gap: 0.85rem;
        }
        .faq-item {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--color-border);
            box-shadow: 0 2px 10px var(--color-shadow);
        }
        .faq-question {
            padding: 1rem 1.3rem;
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--color-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--color-accent);
        }
        .faq-question i {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            transition: transform var(--transition-fast);
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--color-accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 1.3rem;
            font-size: 0.92rem;
            color: var(--color-text-soft);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 1.3rem 1.1rem;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #14181d;
            color: #c5c0b8;
            padding: 3rem 0 1.5rem;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.3fr;
            gap: 2rem;
            max-width: var(--max-width-main);
            margin: 0 auto;
            padding: 0 1.5rem 2rem;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-col h4 {
            color: #e8e4db;
            margin-bottom: 1rem;
            font-size: 1rem;
            font-weight: 600;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 0.5rem;
        }
        .footer-col ul li a {
            color: #b0aca5;
            font-size: 0.88rem;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent-light);
        }
        .footer-col p {
            color: #b0aca5;
            font-size: 0.88rem;
            line-height: 1.6;
            margin: 0;
        }
        .footer-bottom {
            text-align: center;
            padding: 1.5rem 1.5rem 0;
            color: #7a7670;
            font-size: 0.82rem;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .service-card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .nav-links {
                gap: 1.2rem;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                padding: 0.6rem 1rem;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-links {
                position: fixed;
                top: 0;
                right: -100%;
                width: 75%;
                max-width: 360px;
                height: 100vh;
                background: #fff;
                flex-direction: column;
                align-items: flex-start;
                padding: 5rem 2rem 2rem;
                gap: 1.5rem;
                box-shadow: -4px 0 30px rgba(0,0,0,0.15);
                transition: right var(--transition-slow);
                z-index: 105;
            }
            .nav-links.open {
                right: 0;
            }
            .nav-links a {
                font-size: 1rem;
            }
            .nav-cta-btn {
                align-self: flex-start;
            }
            .mobile-overlay {
                position: fixed;
                inset: 0;
                background: rgba(0,0,0,0.45);
                z-index: 104;
                display: none;
            }
            .mobile-overlay.show {
                display: block;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .service-card-grid {
                grid-template-columns: 1fr;
                max-width: 440px;
                margin: 0 auto;
            }
            .article-body {
                font-size: 1rem;
                line-height: 1.75;
            }
            .article-hero-image {
                max-height: 260px;
                border-radius: var(--radius-md);
            }
            .cta-btn-group {
                flex-direction: column;
                align-items: center;
            }
            .cta-btn-group .btn-primary-cta,
            .cta-btn-group .btn-outline-cta {
                width: 100%;
                max-width: 280px;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container-custom {
                padding: 0 1rem;
            }
            .article-content-wrapper {
                padding: 0 1rem;
            }
            .article-header-section {
                padding: 1.5rem 0 0.5rem;
            }
            .article-body-section {
                padding: 1.5rem 0 2rem;
            }
            .service-card-grid {
                padding: 0 1rem;
            }
            .faq-grid {
                padding: 0 1rem;
            }
            .logo-text {
                font-size: 1.15rem;
            }
            .article-hero-image {
                max-height: 200px;
            }
        }