/* roulang page: index */
:root {
            --color-primary: #1a3c34;
            --color-primary-light: #2a5c50;
            --color-accent: #c8a45c;
            --color-accent-light: #d4b87a;
            --color-bg: #fafaf7;
            --color-bg-alt: #f2efe8;
            --color-bg-dark: #1a2b28;
            --color-text: #2c2c2c;
            --color-text-light: #6b6b6b;
            --color-text-muted: #999999;
            --color-border: #e5e0d8;
            --color-border-light: #f0ece4;
            --color-white: #ffffff;
            --color-success: #4a8c6f;
            --font-serif: 'Georgia', 'Noto Serif SC', 'STSong', 'Songti SC', serif;
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 4px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.12);
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --transition-slow: 0.4s ease;
            --section-padding: 80px;
        }

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

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

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

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 768px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
            :root {
                --section-padding: 50px;
            }
        }

        /* ===== HEADER / NAV ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1040;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border-light);
            transition: box-shadow var(--transition-normal);
        }

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

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .brand-logo {
            font-family: var(--font-serif);
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--color-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
            transition: color var(--transition-fast);
            line-height: 1;
        }

        .brand-logo:hover {
            color: var(--color-accent);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li a {
            display: block;
            padding: 8px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text);
            border-radius: 20px;
            letter-spacing: 0.01em;
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }

        .nav-links li a:hover {
            color: var(--color-primary);
            background: rgba(26, 60, 52, 0.05);
        }

        .nav-links li a.active {
            color: var(--color-primary);
            font-weight: 600;
            background: rgba(26, 60, 52, 0.07);
        }

        .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 3px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2.5px;
            background: var(--color-accent);
            border-radius: 2px;
        }

        .nav-cta-btn {
            display: inline-block;
            padding: 9px 22px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-white) !important;
            background: var(--color-primary);
            border-radius: 24px;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            white-space: nowrap;
            margin-left: 6px;
        }

        .nav-cta-btn:hover {
            background: var(--color-primary-light);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
            color: var(--color-white) !important;
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--color-primary);
            cursor: pointer;
            padding: 8px;
            line-height: 1;
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 16px 24px;
                gap: 0;
                border-bottom: 1px solid var(--color-border-light);
                box-shadow: var(--shadow-lg);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li a {
                padding: 14px 16px;
                border-radius: 8px;
                font-size: 1rem;
            }
            .nav-links li a.active::after {
                display: none;
            }
            .nav-cta-btn {
                margin-left: 0;
                margin-top: 8px;
                text-align: center;
                width: 100%;
                border-radius: 8px;
            }
            .mobile-toggle {
                display: block;
            }
            .header-inner {
                height: 56px;
                padding: 0 16px;
            }
            .brand-logo {
                font-size: 1.15rem;
            }
        }

        /* ===== HERO ===== */
        .hero-section {
            position: relative;
            background: linear-gradient(135deg, rgba(26, 60, 52, 0.92) 0%, rgba(26, 43, 40, 0.85) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            min-height: 580px;
            display: flex;
            align-items: center;
            color: var(--color-white);
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: rgba(200, 164, 92, 0.08);
            pointer-events: none;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(200, 164, 92, 0.05);
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 700px;
            padding: 40px 0;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            color: var(--color-accent-light);
            border: 1px solid rgba(200, 164, 92, 0.4);
            border-radius: 20px;
            margin-bottom: 20px;
            background: rgba(200, 164, 92, 0.06);
        }

        .hero-section h1 {
            font-family: var(--font-serif);
            font-size: 2.8rem;
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: 0.03em;
            margin-bottom: 18px;
            color: #ffffff;
        }

        .hero-section .hero-subtitle {
            font-size: 1.15rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.82);
            margin-bottom: 32px;
            max-width: 560px;
        }

        .hero-buttons {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-hero-primary {
            display: inline-block;
            padding: 13px 32px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-primary);
            background: var(--color-accent);
            border-radius: 28px;
            letter-spacing: 0.02em;
            transition: all var(--transition-normal);
            border: none;
            cursor: pointer;
        }

        .btn-hero-primary:hover {
            background: var(--color-accent-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
            color: var(--color-primary);
        }

        .btn-hero-outline {
            display: inline-block;
            padding: 13px 32px;
            font-size: 1rem;
            font-weight: 500;
            color: #ffffff;
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.5);
            border-radius: 28px;
            letter-spacing: 0.02em;
            transition: all var(--transition-normal);
            cursor: pointer;
        }

        .btn-hero-outline:hover {
            border-color: #ffffff;
            background: rgba(255, 255, 255, 0.06);
            color: #ffffff;
        }

        @media (max-width: 768px) {
            .hero-section {
                min-height: 460px;
                text-align: center;
            }
            .hero-section h1 {
                font-size: 2rem;
            }
            .hero-section .hero-subtitle {
                font-size: 1rem;
                margin-left: auto;
                margin-right: auto;
            }
            .hero-buttons {
                justify-content: center;
            }
            .hero-content {
                max-width: 100%;
            }
        }

        @media (max-width: 520px) {
            .hero-section h1 {
                font-size: 1.6rem;
            }
            .hero-section {
                min-height: 400px;
            }
            .btn-hero-primary,
            .btn-hero-outline {
                padding: 11px 24px;
                font-size: 0.9rem;
            }
        }

        /* ===== SECTION GENERAL ===== */
        .section-pad {
            padding: var(--section-padding) 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--color-accent);
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .section-header h2 {
            font-family: var(--font-serif);
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.02em;
            margin-bottom: 10px;
        }

        .section-header .section-desc {
            font-size: 1.05rem;
            color: var(--color-text-light);
            max-width: 580px;
            margin: 0 auto;
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .section-header h2 {
                font-size: 1.6rem;
            }
            .section-header {
                margin-bottom: 32px;
            }
        }

        /* ===== KPI STRIP ===== */
        .kpi-strip {
            background: var(--color-white);
            border-top: 1px solid var(--color-border-light);
            border-bottom: 1px solid var(--color-border-light);
            padding: 36px 0;
        }

        .kpi-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
        }

        .kpi-item {
            padding: 16px;
        }

        .kpi-value {
            font-family: var(--font-serif);
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1;
            margin-bottom: 6px;
        }

        .kpi-label {
            font-size: 0.9rem;
            color: var(--color-text-light);
            letter-spacing: 0.02em;
        }

        @media (max-width: 768px) {
            .kpi-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .kpi-value {
                font-size: 1.7rem;
            }
        }

        @media (max-width: 520px) {
            .kpi-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .kpi-value {
                font-size: 1.4rem;
            }
        }

        /* ===== CATEGORY CARDS ===== */
        .cat-cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .cat-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-normal);
            cursor: pointer;
            display: block;
            color: inherit;
            text-decoration: none;
        }

        .cat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-border);
            color: inherit;
        }

        .cat-card-img {
            height: 200px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .cat-card-img::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 50%;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.35), transparent);
            pointer-events: none;
        }

        .cat-card-body {
            padding: 20px 22px 24px;
        }

        .cat-card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 6px;
            letter-spacing: 0.01em;
        }

        .cat-card-body p {
            font-size: 0.92rem;
            color: var(--color-text-light);
            line-height: 1.55;
            margin: 0;
        }

        .cat-card-arrow {
            display: inline-block;
            margin-top: 10px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent);
            letter-spacing: 0.02em;
        }

        @media (max-width: 768px) {
            .cat-cards-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .cat-card-img {
                height: 180px;
            }
        }

        /* ===== NEWS LIST ===== */
        .news-list-panel {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
        }

        .news-list-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            border-bottom: 1px solid var(--color-border-light);
            transition: background var(--transition-fast);
            text-decoration: none;
            color: inherit;
            gap: 16px;
        }

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

        .news-list-item:hover {
            background: rgba(26, 60, 52, 0.02);
            color: inherit;
        }

        .news-list-title {
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text);
            flex: 1;
            line-height: 1.4;
        }

        .news-list-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
            font-size: 0.85rem;
            color: var(--color-text-muted);
        }

        .news-tag {
            display: inline-block;
            padding: 3px 10px;
            font-size: 0.78rem;
            font-weight: 500;
            background: rgba(26, 60, 52, 0.06);
            color: var(--color-primary);
            border-radius: 12px;
            white-space: nowrap;
        }

        .news-empty {
            text-align: center;
            padding: 40px 20px;
            color: var(--color-text-muted);
            font-size: 0.95rem;
        }

        @media (max-width: 768px) {
            .news-list-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                padding: 14px 16px;
            }
            .news-list-meta {
                width: 100%;
                justify-content: flex-start;
            }
        }

        /* ===== SERVICE HIGHLIGHTS ===== */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .service-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-normal);
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }

        .service-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-border);
            transform: translateY(-2px);
        }

        .service-icon-circle {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(26, 60, 52, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 1.3rem;
            color: var(--color-primary);
        }

        .service-info h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 6px;
            letter-spacing: 0.01em;
        }

        .service-info p {
            font-size: 0.92rem;
            color: var(--color-text-light);
            line-height: 1.55;
            margin: 0;
        }

        @media (max-width: 768px) {
            .service-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .service-card {
                padding: 22px 18px;
                gap: 14px;
            }
            .service-icon-circle {
                width: 42px;
                height: 42px;
                font-size: 1.1rem;
            }
        }

        /* ===== TRUST SECTION ===== */
        .trust-section {
            background: var(--color-bg-dark);
            color: var(--color-white);
        }

        .trust-section .section-header h2 {
            color: #ffffff;
        }

        .trust-section .section-header .section-desc {
            color: rgba(255, 255, 255, 0.7);
        }

        .trust-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .trust-card {
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            text-align: center;
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all var(--transition-normal);
        }

        .trust-card:hover {
            background: rgba(255, 255, 255, 0.09);
            transform: translateY(-2px);
        }

        .trust-card .trust-icon {
            font-size: 2rem;
            color: var(--color-accent-light);
            margin-bottom: 14px;
        }

        .trust-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: #ffffff;
        }

        .trust-card p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.5;
            margin: 0;
        }

        @media (max-width: 768px) {
            .trust-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: var(--color-border);
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-primary);
            background: none;
            border: none;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            letter-spacing: 0.01em;
        }

        .faq-icon {
            flex-shrink: 0;
            font-size: 0.85rem;
            color: var(--color-accent);
            transition: transform var(--transition-fast);
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-normal);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 0.94rem;
            color: var(--color-text-light);
            line-height: 1.65;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            color: var(--color-white);
            text-align: center;
        }

        .cta-section h2 {
            font-family: var(--font-serif);
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .cta-section .cta-desc {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.78);
            margin-bottom: 28px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }

        .btn-cta-large {
            display: inline-block;
            padding: 14px 38px;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-primary);
            background: var(--color-accent);
            border-radius: 30px;
            letter-spacing: 0.03em;
            transition: all var(--transition-normal);
            border: none;
            cursor: pointer;
        }

        .btn-cta-large:hover {
            background: var(--color-accent-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-xl);
            color: var(--color-primary);
        }

        @media (max-width: 768px) {
            .cta-section h2 {
                font-size: 1.5rem;
            }
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: var(--color-bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 0 28px;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }

        .footer-brand-name {
            font-family: var(--font-serif);
            font-size: 1.3rem;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 8px;
            letter-spacing: 0.02em;
        }

        .footer-desc {
            font-size: 0.9rem;
            line-height: 1.6;
            color: rgba(255, 255, 255, 0.55);
            max-width: 280px;
        }

        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }

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

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

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-desc {
                max-width: 100%;
            }
        }

        /* ===== MISC ===== */
        .bg-alt {
            background: var(--color-bg-alt);
        }

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

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

        .divider-light {
            border-top: 1px solid var(--color-border-light);
            margin: 0;
        }

/* roulang page: article */
:root {
            --color-primary: #1a3c4a;
            --color-primary-light: #234d5e;
            --color-primary-dark: #0f2833;
            --color-accent: #2d8a6e;
            --color-accent-light: #3ca882;
            --color-accent-subtle: #e8f4f0;
            --color-gold: #c8a45a;
            --color-gold-light: #d9bc7c;
            --color-gold-subtle: #faf6ed;
            --color-bg: #f7f6f3;
            --color-bg-warm: #f0eee9;
            --color-white: #ffffff;
            --color-text: #2c2c2c;
            --color-text-secondary: #5a5f66;
            --color-text-muted: #8b9199;
            --color-border: #e2e0db;
            --color-border-light: #ece9e4;
            --color-border-subtle: #f0eeea;
            --color-danger: #c0392b;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(26, 60, 74, 0.06);
            --shadow-md: 0 4px 16px rgba(26, 60, 74, 0.08);
            --shadow-lg: 0 8px 32px rgba(26, 60, 74, 0.10);
            --shadow-card: 0 2px 12px rgba(26, 60, 74, 0.05);
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-sans: 'Inter', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --max-width-content: 780px;
            --max-width-wide: 1100px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            margin: 0;
            padding: 0;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        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;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }

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

        /* ===== HEADER / NAV ===== */
        .site-header {
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            background: rgba(255, 255, 255, 0.95);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0;
            max-width: var(--max-width-wide);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .logo-brand {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            color: var(--color-primary);
            white-space: nowrap;
            transition: color var(--transition-fast);
        }

        .logo-brand:hover {
            color: var(--color-accent);
        }

        .logo-brand .logo-accent {
            color: var(--color-accent);
            font-weight: 800;
        }

        .nav-links {
            list-style: none;
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 0;
            padding: 0;
        }

        .nav-links li {
            margin: 0;
        }

        .nav-links a {
            display: inline-block;
            padding: 9px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.02em;
            position: relative;
        }

        .nav-links a:hover {
            color: var(--color-primary);
            background: var(--color-accent-subtle);
        }

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

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 3px;
            left: 18px;
            right: 18px;
            height: 2.5px;
            background: var(--color-accent);
            border-radius: 2px;
        }

        .nav-links .nav-cta-btn {
            background: var(--color-accent);
            color: #fff !important;
            padding: 9px 22px;
            border-radius: 25px;
            font-weight: 600;
            letter-spacing: 0.03em;
            transition: all var(--transition-base);
            margin-left: 8px;
            box-shadow: 0 2px 8px rgba(45, 138, 110, 0.25);
        }

        .nav-links .nav-cta-btn:hover {
            background: var(--color-accent-light);
            box-shadow: 0 4px 16px rgba(45, 138, 110, 0.35);
            transform: translateY(-1px);
        }

        .nav-links .nav-cta-btn.active::after {
            display: none;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--color-primary);
            cursor: pointer;
            padding: 8px 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }

        .nav-toggle:hover {
            background: var(--color-accent-subtle);
        }

        /* ===== MAIN CONTENT AREA ===== */
        .main-content-wrapper {
            flex: 1;
            padding: 36px 20px 60px;
        }

        .article-container {
            max-width: var(--max-width-content);
            margin: 0 auto;
        }

        /* ===== BREADCRUMB ===== */
        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 0.875rem;
            color: var(--color-text-muted);
            margin-bottom: 24px;
            padding: 0;
            list-style: none;
        }

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

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

        .breadcrumb-custom .separator {
            color: var(--color-border);
            font-size: 0.7rem;
        }

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

        /* ===== ARTICLE CARD ===== */
        .article-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border-subtle);
        }

        .article-category-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--color-accent-subtle);
            color: var(--color-accent);
            font-size: 0.82rem;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            letter-spacing: 0.04em;
            margin-bottom: 18px;
            transition: all var(--transition-fast);
            text-transform: uppercase;
        }

        .article-category-tag .tag-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--color-accent);
            display: inline-block;
        }

        .article-title {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.35;
            color: var(--color-primary-dark);
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-wrap: wrap;
            font-size: 0.9rem;
            color: var(--color-text-muted);
            padding-bottom: 24px;
            border-bottom: 1px solid var(--color-border-subtle);
            margin-bottom: 28px;
        }

        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .article-meta .meta-icon {
            color: var(--color-accent);
            font-size: 0.85rem;
        }

        .article-featured-image {
            margin-bottom: 32px;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }

        .article-featured-image img {
            width: 100%;
            border-radius: var(--radius-md);
            transition: transform var(--transition-slow);
        }

        .article-featured-image:hover img {
            transform: scale(1.012);
        }

        /* ===== ARTICLE BODY TYPOGRAPHY ===== */
        .article-body {
            font-size: 1.0625rem;
            line-height: 1.85;
            color: var(--color-text);
            word-break: break-word;
        }

        .article-body h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-primary-dark);
            margin-top: 40px;
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--color-accent-subtle);
            letter-spacing: 0.02em;
        }

        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-top: 32px;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .article-body h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-text);
            margin-top: 24px;
            margin-bottom: 10px;
        }

        .article-body p {
            margin-bottom: 18px;
        }

        .article-body ul,
        .article-body ol {
            padding-left: 24px;
            margin-bottom: 18px;
        }

        .article-body li {
            margin-bottom: 8px;
        }

        .article-body blockquote {
            border-left: 4px solid var(--color-accent);
            background: var(--color-accent-subtle);
            padding: 18px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--color-primary);
            font-style: italic;
            font-size: 1.02rem;
        }

        .article-body blockquote p:last-child {
            margin-bottom: 0;
        }

        .article-body img {
            margin: 20px auto;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
        }

        .article-body a {
            color: var(--color-accent);
            text-decoration: underline;
            text-underline-offset: 3px;
            text-decoration-thickness: 1px;
            font-weight: 500;
        }

        .article-body a:hover {
            color: var(--color-accent-light);
        }

        .article-body code {
            background: #f4f3f0;
            padding: 3px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--color-primary-dark);
            font-family: 'SF Mono', 'Menlo', 'Consolas', monospace;
        }

        .article-body pre {
            background: #1e2d35;
            color: #e0e8ec;
            padding: 20px 24px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 20px 0;
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .article-body pre code {
            background: none;
            color: inherit;
            padding: 0;
            font-size: inherit;
        }

        .article-body hr {
            border: none;
            height: 1px;
            background: var(--color-border-light);
            margin: 32px 0;
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            font-size: 0.95rem;
        }

        .article-body table th,
        .article-body table td {
            border: 1px solid var(--color-border);
            padding: 10px 14px;
            text-align: left;
        }

        .article-body table th {
            background: var(--color-accent-subtle);
            color: var(--color-primary);
            font-weight: 600;
        }

        /* ===== ARTICLE FOOTER ===== */
        .article-footer-actions {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--color-border-subtle);
        }

        .btn-back-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            background: var(--color-primary);
            color: #fff;
            border-radius: 25px;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.03em;
            transition: all var(--transition-base);
            border: none;
            cursor: pointer;
            box-shadow: 0 2px 10px rgba(26, 60, 74, 0.2);
        }

        .btn-back-home:hover {
            background: var(--color-primary-light);
            color: #fff;
            box-shadow: 0 4px 18px rgba(26, 60, 74, 0.3);
            transform: translateY(-1px);
        }

        .article-share-hint {
            font-size: 0.875rem;
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        /* ===== RELATED SECTION ===== */
        .related-section {
            margin-top: 48px;
        }

        .related-section .section-label {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-primary-dark);
            margin-bottom: 20px;
            letter-spacing: 0.03em;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .related-section .section-label::before {
            content: '';
            width: 4px;
            height: 22px;
            background: var(--color-accent);
            border-radius: 2px;
            display: inline-block;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }

        .related-card {
            background: var(--color-white);
            border-radius: var(--radius-md);
            padding: 22px;
            border: 1px solid var(--color-border-subtle);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .related-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-border);
            transform: translateY(-2px);
        }

        .related-card .related-card-tag {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--color-accent);
            letter-spacing: 0.05em;
            text-transform: uppercase;
        }

        .related-card .related-card-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-primary-dark);
            line-height: 1.4;
        }

        .related-card .related-card-arrow {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            transition: transform var(--transition-fast);
            align-self: flex-start;
        }

        .related-card:hover .related-card-arrow {
            transform: translateX(4px);
            color: var(--color-accent);
        }

        /* ===== EMPTY STATE ===== */
        .empty-state {
            text-align: center;
            padding: 60px 30px;
            background: var(--color-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border-subtle);
        }

        .empty-state .empty-icon {
            font-size: 3.5rem;
            color: var(--color-border);
            margin-bottom: 20px;
        }

        .empty-state .empty-title {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--color-primary-dark);
            margin-bottom: 10px;
        }

        .empty-state .empty-desc {
            font-size: 1rem;
            color: var(--color-text-muted);
            margin-bottom: 28px;
            max-width: 420px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: var(--color-primary-dark);
            color: #c5cdd3;
            padding: 48px 0 24px;
            margin-top: auto;
        }

        .container-custom {
            max-width: var(--max-width-wide);
            margin: 0 auto;
            padding: 0 20px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-brand-name {
            font-size: 1.25rem;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 0.04em;
            margin-bottom: 10px;
        }

        .footer-desc {
            font-size: 0.9rem;
            line-height: 1.6;
            color: #adb8c0;
            margin: 0;
        }

        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 0.04em;
            margin-bottom: 14px;
        }

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

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

        .footer-col ul li a {
            color: #c5cdd3;
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: #ffffff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: #8b959e;
            letter-spacing: 0.02em;
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .article-card {
                padding: 30px 28px;
            }

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

        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
                gap: 12px;
            }

            .nav-links {
                flex-wrap: wrap;
                gap: 3px;
                width: 100%;
                justify-content: flex-start;
            }

            .nav-links a {
                padding: 7px 12px;
                font-size: 0.85rem;
            }

            .nav-links .nav-cta-btn {
                padding: 7px 16px;
                font-size: 0.85rem;
                margin-left: 2px;
            }

            .nav-links a.active::after {
                left: 12px;
                right: 12px;
                bottom: 1px;
                height: 2px;
            }

            .article-card {
                padding: 24px 18px;
            }

            .article-title {
                font-size: 1.45rem;
            }

            .article-body {
                font-size: 1rem;
                line-height: 1.75;
            }

            .article-body h2 {
                font-size: 1.3rem;
            }

            .article-body h3 {
                font-size: 1.12rem;
            }

            .related-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .article-meta {
                gap: 10px;
                font-size: 0.82rem;
            }

            .article-footer-actions {
                flex-direction: column;
                align-items: flex-start;
            }

            .btn-back-home {
                width: 100%;
                justify-content: center;
            }

            .main-content-wrapper {
                padding: 20px 14px 40px;
            }

            .breadcrumb-custom {
                font-size: 0.8rem;
                gap: 5px;
                margin-bottom: 16px;
            }
        }

        @media (max-width: 520px) {
            .nav-links {
                gap: 1px;
            }

            .nav-links a {
                padding: 6px 9px;
                font-size: 0.78rem;
            }

            .nav-links .nav-cta-btn {
                padding: 6px 12px;
                font-size: 0.78rem;
            }

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

            .article-card {
                padding: 18px 12px;
                border-radius: var(--radius-md);
            }

            .article-title {
                font-size: 1.25rem;
            }

            .article-body {
                font-size: 0.95rem;
                line-height: 1.7;
            }

            .article-featured-image {
                margin-bottom: 20px;
                border-radius: var(--radius-sm);
            }

            .article-featured-image img {
                border-radius: var(--radius-sm);
            }

            .empty-state {
                padding: 40px 16px;
            }

            .empty-state .empty-icon {
                font-size: 2.8rem;
            }
        }

        @media (max-width: 400px) {
            .nav-links a {
                padding: 5px 7px;
                font-size: 0.72rem;
                letter-spacing: 0.01em;
            }

            .nav-links .nav-cta-btn {
                padding: 5px 10px;
                font-size: 0.72rem;
            }

            .logo-brand {
                font-size: 1.05rem;
            }
        }

        /* Bootstrap overrides */
        .btn:focus {
            box-shadow: none;
        }

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

/* roulang page: category1 */
:root {
            --color-primary: #2c5f5b;
            --color-primary-dark: #1e4542;
            --color-primary-light: #3a7d76;
            --color-accent: #c49b6c;
            --color-accent-hover: #b0855a;
            --color-bg: #f9fafb;
            --color-bg-alt: #f1f4f3;
            --color-surface: #ffffff;
            --color-text: #1a1d1c;
            --color-text-secondary: #5a5f5e;
            --color-text-muted: #8a8f8e;
            --color-border: #e2e5e4;
            --color-border-light: #eef0ef;
            --color-success: #3a8a6e;
            --color-warning: #d4a853;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.07), 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 10px 32px rgba(0, 0, 0, 0.09), 0 4px 10px rgba(0, 0, 0, 0.05);
            --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.11), 0 8px 18px rgba(0, 0, 0, 0.06);
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', -apple-system, BlinkMacSystemFont, 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 {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            margin: 0;
            padding: 0;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

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

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

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

        .container-custom {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.92);
            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 {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--color-text);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: color var(--transition-fast);
        }

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

        .logo-icon {
            width: 34px;
            height: 34px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.85rem;
            font-weight: 700;
            flex-shrink: 0;
        }

        .nav-links {
            list-style: none;
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 0;
            padding: 0;
        }

        .nav-links li a {
            display: inline-block;
            padding: 8px 16px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-radius: 20px;
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }

        .nav-links li a:hover {
            color: var(--color-primary);
            background: rgba(44, 95, 91, 0.05);
        }

        .nav-links li a.active {
            color: var(--color-primary);
            font-weight: 600;
        }

        .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2.5px;
            background: var(--color-primary);
            border-radius: 4px;
        }

        .nav-cta-btn {
            background: var(--color-primary) !important;
            color: #fff !important;
            padding: 9px 22px !important;
            border-radius: 22px !important;
            font-weight: 600 !important;
            transition: all var(--transition-fast) !important;
            box-shadow: 0 2px 8px rgba(44, 95, 91, 0.25);
        }

        .nav-cta-btn:hover {
            background: var(--color-primary-dark) !important;
            box-shadow: 0 4px 14px rgba(44, 95, 91, 0.35) !important;
            transform: translateY(-1px);
            color: #fff !important;
        }

        .nav-cta-btn.active::after {
            display: none !important;
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--color-text);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
            cursor: pointer;
        }

        .mobile-toggle:hover {
            background: var(--color-bg-alt);
        }

        /* Hero Section */
        .hero-section {
            position: relative;
            background: linear-gradient(170deg, #1a3c38 0%, #1e4542 30%, #2c5f5b 100%);
            color: #fff;
            padding: 80px 0 90px;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            pointer-events: none;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: 50%;
            transform: translateX(-50%);
            width: 120%;
            height: 80px;
            background: var(--color-bg);
            border-radius: 50% 50% 0 0;
            pointer-events: none;
        }

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

        .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            padding: 6px 18px;
            border-radius: 20px;
            font-size: 0.88rem;
            font-weight: 500;
            letter-spacing: 0.03em;
            margin-bottom: 22px;
        }

        .hero-section h1 {
            font-size: 3rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 18px;
            color: #fff;
        }

        .hero-subtitle {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.6;
            margin-bottom: 32px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-buttons {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-primary-custom {
            display: inline-block;
            padding: 13px 32px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 28px;
            background: var(--color-accent);
            color: #fff;
            transition: all var(--transition-base);
            box-shadow: 0 4px 16px rgba(196, 155, 108, 0.35);
            border: none;
            cursor: pointer;
            text-decoration: none;
        }

        .btn-primary-custom:hover {
            background: var(--color-accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(196, 155, 108, 0.45);
            color: #fff;
        }

        .btn-outline-custom {
            display: inline-block;
            padding: 13px 32px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 28px;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.55);
            transition: all var(--transition-base);
            cursor: pointer;
            text-decoration: none;
        }

        .btn-outline-custom:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        /* Section Common */
        .section {
            padding: 72px 0;
        }

        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--color-primary);
            background: rgba(44, 95, 91, 0.07);
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            color: var(--color-text);
            margin-bottom: 14px;
            line-height: 1.25;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            max-width: 640px;
            margin-bottom: 40px;
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header .section-desc {
            margin-left: auto;
            margin-right: auto;
        }

        /* Advantage Cards */
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .advantage-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

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

        .advantage-card .card-icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            background: rgba(44, 95, 91, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.5rem;
            color: var(--color-primary);
            transition: all var(--transition-base);
        }

        .advantage-card:hover .card-icon-wrap {
            background: var(--color-primary);
            color: #fff;
            transform: scale(1.06);
        }

        .advantage-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 8px;
        }

        .advantage-card p {
            font-size: 0.92rem;
            color: var(--color-text-muted);
            line-height: 1.55;
            margin: 0;
        }

        /* KPI Stats */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }

        .stat-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-border);
        }

        .stat-number {
            font-size: 2.6rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.03em;
            line-height: 1;
            margin-bottom: 6px;
        }

        .stat-unit {
            font-size: 1rem;
            font-weight: 500;
            color: var(--color-primary-light);
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin-top: 4px;
        }

        /* Process Steps */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            position: relative;
        }

        .process-step {
            text-align: center;
            position: relative;
            padding: 24px 16px;
        }

        .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.15rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            position: relative;
            z-index: 2;
            transition: all var(--transition-base);
        }

        .process-step:hover .step-number {
            background: var(--color-accent);
            transform: scale(1.1);
            box-shadow: var(--shadow-md);
        }

        .process-step h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 6px;
        }

        .process-step p {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            line-height: 1.5;
            margin: 0;
        }

        /* Scenario Tags */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 12px;
        }

        .scenario-tag {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md);
            padding: 16px 14px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text);
            transition: all var(--transition-fast);
            cursor: default;
        }

        .scenario-tag:hover {
            border-color: var(--color-primary-light);
            background: rgba(44, 95, 91, 0.03);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }

        .scenario-tag i {
            color: var(--color-primary);
            font-size: 1rem;
            flex-shrink: 0;
        }

        /* FAQ Accordion */
        .faq-accordion .accordion-item {
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md) !important;
            margin-bottom: 10px;
            overflow: hidden;
            background: var(--color-surface);
        }

        .faq-accordion .accordion-button {
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text);
            background: var(--color-surface);
            padding: 18px 22px;
            box-shadow: none !important;
            border-radius: var(--radius-md) !important;
            transition: all var(--transition-fast);
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--color-primary);
            background: rgba(44, 95, 91, 0.03);
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(44, 95, 91, 0.12) !important;
            border-color: var(--color-primary-light);
        }

        .faq-accordion .accordion-body {
            padding: 18px 22px 22px;
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(160deg, #1e4542 0%, #2c5f5b 100%);
            color: #fff;
            padding: 64px 0;
            text-align: center;
            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: 0.1;
            pointer-events: none;
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            max-width: 640px;
            margin: 0 auto;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 14px;
        }

        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 28px;
            line-height: 1.6;
        }

        /* Footer */
        .site-footer {
            background: #1a1d1c;
            color: #b0b5b4;
            padding: 52px 0 24px;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-brand-name {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .footer-desc {
            font-size: 0.9rem;
            line-height: 1.6;
            color: #8a8f8e;
            max-width: 320px;
        }

        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

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

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

        .footer-col ul li a {
            color: #8a8f8e;
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 18px;
            font-size: 0.82rem;
            color: #6a6f6e;
            text-align: center;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .advantage-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenario-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .hero-section h1 {
                font-size: 2.4rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 60px;
            }

            .mobile-toggle {
                display: block;
            }

            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.97);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 12px 20px;
                border-bottom: 1px solid var(--color-border-light);
                box-shadow: var(--shadow-lg);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: all var(--transition-base);
                z-index: 1049;
            }

            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .nav-links li a {
                display: block;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                text-align: center;
                font-size: 1rem;
            }

            .nav-links li a.active::after {
                display: none;
            }

            .nav-links li a.active {
                background: rgba(44, 95, 91, 0.08);
                border-radius: var(--radius-sm);
            }

            .nav-cta-btn {
                margin-top: 6px;
                text-align: center;
            }

            .hero-section {
                padding: 56px 0 64px;
            }

            .hero-section h1 {
                font-size: 2rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.55rem;
            }
            .advantage-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .process-steps {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .scenario-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-section h2 {
                font-size: 1.55rem;
            }
        }

        @media (max-width: 520px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
            .hero-section h1 {
                font-size: 1.65rem;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }
            .btn-primary-custom,
            .btn-outline-custom {
                width: 100%;
                text-align: center;
                max-width: 280px;
            }
            .advantage-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-number {
                font-size: 2rem;
            }
            .process-steps {
                grid-template-columns: 1fr;
                gap: 8px;
            }
            .scenario-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .section {
                padding: 38px 0;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #2c3e50;
            --color-primary-dark: #1a2c3b;
            --color-accent: #5a8f8f;
            --color-accent-light: #7ab5b5;
            --color-accent-subtle: #e8f3f3;
            --color-bg: #f8f7f4;
            --color-bg-warm: #fdfbf7;
            --color-surface: #ffffff;
            --color-text: #1a1a1a;
            --color-text-secondary: #5c5c5c;
            --color-text-light: #8a8a8a;
            --color-border: #e8e5e0;
            --color-border-light: #f0ede8;
            --color-success: #4a9e7b;
            --color-warning: #c4a265;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 8px 36px rgba(0, 0, 0, 0.09);
            --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.10);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --section-gap: 80px;
            --section-gap-sm: 56px;
        }

        *,
        *::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-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg-warm);
            overflow-x: hidden;
            min-height: 100vh;
        }

        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,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }
        ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        h1, h2, h3, h4, h5, h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--color-text);
        }

        .container-custom {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border-light);
            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;
            height: 64px;
        }
        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 18px;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .logo-text {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--color-primary);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }
        .logo-text span {
            color: var(--color-accent);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .nav-links li a {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .nav-links li a:hover {
            color: var(--color-primary);
            background: rgba(44, 62, 80, 0.04);
        }
        .nav-links li a.active {
            color: var(--color-accent);
            font-weight: 600;
            background: var(--color-accent-subtle);
        }
        .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 22px;
            height: 3px;
            border-radius: 3px;
            background: var(--color-accent);
        }
        .nav-cta-btn {
            background: var(--color-accent) !important;
            color: #fff !important;
            font-weight: 600 !important;
            padding: 9px 22px !important;
            border-radius: 30px !important;
            transition: all var(--transition-base) !important;
            box-shadow: 0 2px 10px rgba(90, 143, 143, 0.25);
        }
        .nav-cta-btn:hover {
            background: var(--color-accent-light) !important;
            box-shadow: 0 4px 18px rgba(90, 143, 143, 0.35) !important;
            transform: translateY(-1px);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--color-text);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }
        .nav-toggle:hover {
            background: rgba(0, 0, 0, 0.04);
        }
        @media (max-width: 860px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--color-border);
                padding: 16px 20px;
                gap: 4px;
                box-shadow: var(--shadow-lg);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
                z-index: 999;
            }
            .nav-links.show {
                display: flex;
            }
            .nav-links li a {
                width: 100%;
                border-radius: var(--radius-sm);
                padding: 12px 18px;
                font-size: 1rem;
            }
            .nav-links li a.active::after {
                display: none;
            }
            .nav-cta-btn {
                text-align: center;
                justify-content: center;
                margin-top: 6px;
            }
            .nav-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
        }

        /* ========== HERO ========== */
        .page-hero {
            position: relative;
            min-height: 440px;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, rgba(44, 62, 80, 0.88) 0%, rgba(44, 62, 80, 0.72) 40%, rgba(90, 143, 143, 0.55) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            background-position: center 30%;
            overflow: hidden;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--color-bg-warm), transparent);
            z-index: 2;
            pointer-events: none;
        }
        .page-hero .hero-content {
            position: relative;
            z-index: 3;
            padding: 70px 0 60px;
        }
        .page-hero .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.16);
            backdrop-filter: blur(10px);
            color: #fff;
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.88rem;
            font-weight: 500;
            letter-spacing: 0.6px;
            margin-bottom: 20px;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .page-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.3px;
            margin-bottom: 16px;
            line-height: 1.25;
        }
        .page-hero .hero-subtitle {
            font-size: 1.18rem;
            color: rgba(255, 255, 255, 0.9);
            max-width: 620px;
            line-height: 1.65;
            margin-bottom: 28px;
        }
        .page-hero .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            color: var(--color-primary);
            font-weight: 700;
            padding: 13px 28px;
            border-radius: 30px;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-md);
            text-decoration: none;
        }
        .btn-hero-primary:hover {
            background: #f0f0f0;
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
            color: var(--color-primary);
        }
        .btn-hero-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            padding: 12px 26px;
            border-radius: 30px;
            font-size: 1rem;
            border: 2px solid rgba(255, 255, 255, 0.55);
            cursor: pointer;
            transition: all var(--transition-base);
            text-decoration: none;
        }
        .btn-hero-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
        }
        @media (max-width: 768px) {
            .page-hero {
                min-height: 360px;
            }
            .page-hero h1 {
                font-size: 2rem;
            }
            .page-hero .hero-subtitle {
                font-size: 1.02rem;
            }
            .page-hero .hero-content {
                padding: 50px 0 40px;
            }
        }
        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.6rem;
            }
            .page-hero .hero-subtitle {
                font-size: 0.95rem;
            }
            .btn-hero-primary,
            .btn-hero-outline {
                width: 100%;
                justify-content: center;
                padding: 12px 20px;
                font-size: 0.95rem;
            }
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: var(--section-gap) 0;
        }
        .section-sm {
            padding: var(--section-gap-sm) 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header .section-label {
            display: inline-block;
            font-size: 0.84rem;
            font-weight: 600;
            letter-spacing: 1.2px;
            text-transform: uppercase;
            color: var(--color-accent);
            margin-bottom: 10px;
        }
        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -0.2px;
            margin-bottom: 12px;
        }
        .section-header .section-desc {
            font-size: 1.05rem;
            color: var(--color-text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .section-header h2 {
                font-size: 1.7rem;
            }
            .section {
                padding: var(--section-gap-sm) 0;
            }
        }

        /* ========== SERVICE CARDS ========== */
        .service-card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .service-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            padding: 32px 28px;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--color-accent);
            opacity: 0;
            transition: opacity var(--transition-base);
            border-radius: 0 0 var(--radius-sm) var(--radius-sm);
        }
        .service-card:hover {
            border-color: var(--color-border);
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .service-card:hover::before {
            opacity: 1;
        }
        .service-card .card-icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            background: var(--color-accent-subtle);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            font-size: 1.5rem;
            color: var(--color-accent);
            flex-shrink: 0;
            transition: all var(--transition-base);
        }
        .service-card:hover .card-icon-wrap {
            background: var(--color-accent);
            color: #fff;
            transform: scale(1.05);
        }
        .service-card h3 {
            font-size: 1.18rem;
            font-weight: 700;
            margin-bottom: 10px;
            letter-spacing: -0.1px;
        }
        .service-card .card-desc {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin-bottom: 18px;
            flex-grow: 1;
        }
        .service-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.92rem;
            color: var(--color-accent);
            transition: gap var(--transition-fast);
            margin-top: auto;
        }
        .service-card .card-link:hover {
            gap: 10px;
        }
        .service-card .card-image {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: var(--radius-md);
            margin-bottom: 20px;
        }
        @media (max-width: 992px) {
            .service-card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (max-width: 640px) {
            .service-card-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .service-card {
                padding: 24px 20px;
            }
        }

        /* ========== SCENARIO CARDS ========== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .scenario-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .scenario-card .scenario-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .scenario-card .scenario-body {
            padding: 24px 28px 28px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }
        .scenario-card .scenario-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            background: var(--color-accent-subtle);
            color: var(--color-accent);
            margin-bottom: 12px;
            width: fit-content;
        }
        .scenario-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .scenario-card p {
            font-size: 0.93rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            flex-grow: 1;
        }
        @media (max-width: 768px) {
            .scenario-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .scenario-card .scenario-img {
                height: 160px;
            }
        }

        /* ========== PROCESS / STEPS ========== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }
        .process-step {
            text-align: center;
            position: relative;
            padding: 30px 18px;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            counter-increment: step;
        }
        .process-step:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--color-accent);
        }
        .process-step .step-number {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--color-accent-subtle);
            color: var(--color-accent);
            font-weight: 800;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            transition: all var(--transition-base);
        }
        .process-step:hover .step-number {
            background: var(--color-accent);
            color: #fff;
            box-shadow: 0 6px 20px rgba(90, 143, 143, 0.35);
        }
        .process-step h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            line-height: 1.55;
        }
        .process-connector {
            display: none;
        }
        @media (min-width: 769px) {
            .process-steps {
                position: relative;
            }
            .process-steps::before {
                content: '';
                position: absolute;
                top: 50px;
                left: 12%;
                right: 12%;
                height: 2px;
                background: var(--color-border);
                z-index: 0;
            }
        }
        @media (max-width: 768px) {
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .process-steps::before {
                display: none;
            }
        }
        @media (max-width: 480px) {
            .process-steps {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .process-step {
                padding: 22px 16px;
            }
        }

        /* ========== KPI / DATA STRIP ========== */
        .kpi-strip {
            background: var(--color-primary);
            padding: 48px 0;
            border-radius: var(--radius-xl);
            margin: 0 16px;
        }
        .kpi-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            text-align: center;
        }
        .kpi-item .kpi-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -1px;
            line-height: 1;
            margin-bottom: 6px;
        }
        .kpi-item .kpi-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.75);
            font-weight: 500;
            letter-spacing: 0.3px;
        }
        .kpi-item .kpi-suffix {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--color-accent-light);
        }
        @media (max-width: 768px) {
            .kpi-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .kpi-item .kpi-number {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 480px) {
            .kpi-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .kpi-item .kpi-number {
                font-size: 1.8rem;
            }
            .kpi-strip {
                margin: 0 8px;
                border-radius: var(--radius-lg);
                padding: 36px 0;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            background: var(--color-surface);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--color-border);
            box-shadow: var(--shadow-xs);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            text-align: left;
            padding: 20px 24px;
            font-weight: 600;
            font-size: 1.02rem;
            color: var(--color-text);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            transition: color var(--transition-fast);
            line-height: 1.5;
        }
        .faq-question:hover {
            color: var(--color-accent);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--color-accent-subtle);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            color: var(--color-accent);
            transition: all var(--transition-base);
        }
        .faq-item.open .faq-icon {
            background: var(--color-accent);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 24px;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(145deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-accent) 100%);
            padding: 64px 0;
            text-align: center;
            border-radius: var(--radius-xl);
            margin: 0 16px 40px;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -40px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.03);
            pointer-events: none;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .cta-section .cta-desc {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.05rem;
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
            max-width: 540px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-section .btn-cta-large {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            color: var(--color-primary);
            font-weight: 700;
            padding: 15px 36px;
            border-radius: 30px;
            font-size: 1.08rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-lg);
            text-decoration: none;
            position: relative;
            z-index: 1;
        }
        .cta-section .btn-cta-large:hover {
            background: #f0f0f0;
            transform: translateY(-3px);
            box-shadow: var(--shadow-xl);
            color: var(--color-primary);
        }
        @media (max-width: 768px) {
            .cta-section {
                margin: 0 8px 30px;
                padding: 48px 20px;
                border-radius: var(--radius-lg);
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
        }

        /* ========== CMS CONTENT STRIP ========== */
        .cms-mini-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .cms-mini-card {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            padding: 22px 20px;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .cms-mini-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--color-border);
        }
        .cms-mini-card .mini-date {
            font-size: 0.8rem;
            color: var(--color-text-light);
            margin-bottom: 8px;
            letter-spacing: 0.3px;
        }
        .cms-mini-card h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.45;
        }
        .cms-mini-card p {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            line-height: 1.5;
            flex-grow: 1;
            margin-bottom: 12px;
        }
        .cms-mini-card .mini-link {
            font-weight: 600;
            font-size: 0.88rem;
            color: var(--color-accent);
            margin-top: auto;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition-fast);
        }
        .cms-mini-card .mini-link:hover {
            gap: 8px;
        }
        @media (max-width: 768px) {
            .cms-mini-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 520px) {
            .cms-mini-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.8);
            padding: 48px 0 28px;
            font-size: 0.93rem;
            margin-top: 20px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand-name {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }
        .footer-desc {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.6;
            max-width: 360px;
        }
        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.4px;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            text-align: center;
            font-size: 0.84rem;
            color: rgba(255, 255, 255, 0.45);
            letter-spacing: 0.2px;
        }
        @media (max-width: 768px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }
        @media (max-width: 520px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        /* ========== UTILS ========== */
        .bg-soft {
            background: var(--color-bg);
        }
        .bg-surface {
            background: var(--color-surface);
        }
        .text-accent {
            color: var(--color-accent);
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border-width: 0;
        }

/* roulang page: category3 */
:root {
            --color-primary: #1e2d3d;
            --color-primary-light: #2a3f54;
            --color-accent: #4a7c74;
            --color-accent-light: #5b948b;
            --color-accent-subtle: #e8f2f0;
            --color-cta: #c4946c;
            --color-cta-hover: #b07d55;
            --color-cta-light: #fdf6f0;
            --color-bg: #fafaf8;
            --color-surface: #ffffff;
            --color-text: #1a1a1a;
            --color-text-secondary: #5a6070;
            --color-text-muted: #8b919e;
            --color-border: #e5e7ea;
            --color-border-light: #f0f1f3;
            --color-success: #5b8c5a;
            --color-warning: #d4a853;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.03);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06), 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.08), 0 3px 10px rgba(0, 0, 0, 0.05);
            --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.10), 0 6px 18px rgba(0, 0, 0, 0.06);
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.40s ease;
            --font-heading: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, sans-serif;
            --font-body: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

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

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

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

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

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

        input {
            font-family: var(--font-body);
        }
        input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

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

        p {
            margin-top: 0;
            margin-bottom: 1rem;
        }

        .container-custom {
            max-width: var(--max-width);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 768px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--color-border-light);
            height: var(--header-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
            border-bottom-color: transparent;
        }
        .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-icon {
            width: 40px;
            height: 40px;
            background: var(--color-primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .logo-text {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--color-primary);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: inherit;
        }
        .logo-link:hover {
            color: inherit;
            opacity: 0.85;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li {
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            display: inline-block;
            padding: 8px 16px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            text-decoration: none;
            border-radius: var(--radius-sm);
            transition: color var(--transition-fast), background var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
            transform: scaleX(0);
            transition: transform var(--transition-base);
            transform-origin: center;
        }
        .nav-links a:hover {
            color: var(--color-primary);
            background: rgba(0, 0, 0, 0.03);
        }
        .nav-links a:hover::after {
            transform: scaleX(1);
        }
        .nav-links a.active {
            color: var(--color-accent);
            font-weight: 600;
            background: transparent;
        }
        .nav-links a.active::after {
            transform: scaleX(1);
            background: var(--color-accent);
        }
        .nav-cta-btn {
            background: var(--color-cta) !important;
            color: #fff !important;
            font-weight: 600 !important;
            padding: 10px 22px !important;
            border-radius: var(--radius-md) !important;
            transition: all var(--transition-base) !important;
            box-shadow: 0 2px 8px rgba(196, 148, 108, 0.3);
            margin-left: 8px;
        }
        .nav-cta-btn:hover {
            background: var(--color-cta-hover) !important;
            box-shadow: 0 4px 16px rgba(196, 148, 108, 0.4) !important;
            transform: translateY(-1px);
        }
        .nav-cta-btn::after {
            display: none !important;
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--color-primary);
            padding: 8px;
            cursor: pointer;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
            line-height: 1;
        }
        .mobile-menu-btn:hover {
            background: rgba(0, 0, 0, 0.04);
        }
        @media (max-width: 900px) {
            .mobile-menu-btn {
                display: block;
            }
            .nav-links {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 12px 16px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-lg);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: transform var(--transition-base), opacity var(--transition-base);
                z-index: 1049;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links a {
                display: block;
                padding: 14px 16px;
                font-size: 1rem;
                border-radius: var(--radius-sm);
                text-align: center;
            }
            .nav-links a::after {
                display: none;
            }
            .nav-links a.active {
                background: var(--color-accent-subtle);
                color: var(--color-accent);
            }
            .nav-cta-btn {
                margin-left: 0;
                margin-top: 6px;
                text-align: center;
            }
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            padding: 80px 0 90px;
            background: var(--color-primary);
            background-image: linear-gradient(180deg, rgba(30, 45, 61, 0.82) 0%, rgba(30, 45, 61, 0.92) 100%), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            color: #fff;
            text-align: center;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(74, 124, 116, 0.3) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -50px;
            left: -60px;
            width: 260px;
            height: 260px;
            background: radial-gradient(circle, rgba(196, 148, 108, 0.22) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            padding: 7px 18px;
            border-radius: 50px;
            font-size: 0.88rem;
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-bottom: 24px;
            backdrop-filter: blur(6px);
            position: relative;
            z-index: 2;
        }
        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fff;
            margin-bottom: 20px;
            position: relative;
            z-index: 2;
            line-height: 1.25;
        }
        .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            margin: 0 auto 36px;
            position: relative;
            z-index: 2;
            line-height: 1.7;
        }
        .hero-cta-group {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }
        .btn-cta-primary {
            display: inline-block;
            background: var(--color-cta);
            color: #fff;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            text-decoration: none;
            transition: all var(--transition-base);
            box-shadow: 0 4px 18px rgba(196, 148, 108, 0.4);
            border: none;
            font-size: 1rem;
            letter-spacing: 0.3px;
        }
        .btn-cta-primary:hover {
            background: var(--color-cta-hover);
            color: #fff;
            box-shadow: 0 6px 24px rgba(196, 148, 108, 0.5);
            transform: translateY(-2px);
        }
        .btn-cta-outline {
            display: inline-block;
            background: transparent;
            color: #fff;
            font-weight: 500;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            text-decoration: none;
            transition: all var(--transition-base);
            border: 2px solid rgba(255, 255, 255, 0.55);
            font-size: 1rem;
            letter-spacing: 0.3px;
        }
        .btn-cta-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.8);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 56px 0 60px;
            }
            .hero-title {
                font-size: 1.9rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .btn-cta-primary,
            .btn-cta-outline {
                padding: 12px 24px;
                font-size: 0.95rem;
            }
        }

        /* ========== SECTION COMMON ========== */
        .section-padding {
            padding: 72px 0;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 48px 0;
            }
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 10px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 12px;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--color-text-secondary);
            max-width: 620px;
            margin: 0 auto;
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.5rem;
            }
            .section-desc {
                font-size: 0.95rem;
            }
        }

        /* ========== TOPIC CARDS GRID ========== */
        .topics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        @media (max-width: 992px) {
            .topics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .topics-grid {
                grid-template-columns: 1fr;
            }
        }
        .topic-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            text-align: center;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .topic-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: transparent;
            transform: translateY(-4px);
        }
        .topic-card-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.5rem;
            background: var(--color-accent-subtle);
            color: var(--color-accent);
            transition: all var(--transition-base);
        }
        .topic-card:hover .topic-card-icon {
            background: var(--color-accent);
            color: #fff;
            transform: scale(1.05);
        }
        .topic-card h4 {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
        }
        .topic-card p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.6;
        }

        /* ========== KPI STRIP ========== */
        .kpi-strip {
            background: var(--color-primary);
            padding: 48px 0;
            color: #fff;
        }
        .kpi-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        @media (max-width: 768px) {
            .kpi-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (max-width: 480px) {
            .kpi-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        .kpi-item {
            padding: 16px 10px;
        }
        .kpi-number {
            font-size: 2.6rem;
            font-weight: 800;
            letter-spacing: -1px;
            color: #fff;
            margin-bottom: 6px;
            line-height: 1.1;
        }
        .kpi-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            letter-spacing: 0.4px;
        }
        .kpi-unit {
            font-size: 1.2rem;
            font-weight: 500;
            color: var(--color-cta);
        }

        /* ========== FEATURED INSIGHTS ========== */
        .insights-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        @media (max-width: 992px) {
            .insights-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 600px) {
            .insights-grid {
                grid-template-columns: 1fr;
            }
        }
        .insight-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .insight-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: transparent;
            transform: translateY(-4px);
        }
        .insight-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .insight-card-body {
            padding: 20px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .insight-card-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--color-accent);
            background: var(--color-accent-subtle);
            padding: 4px 10px;
            border-radius: 50px;
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .insight-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .insight-card p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin-bottom: 14px;
            flex: 1;
            line-height: 1.6;
        }
        .insight-card-meta {
            font-size: 0.82rem;
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .insight-card-meta i {
            font-size: 0.75rem;
        }

        /* ========== VALUE PROPS ========== */
        .value-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        @media (max-width: 768px) {
            .value-list {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }
        .value-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: 20px;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }
        .value-item:hover {
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .value-icon {
            width: 48px;
            height: 48px;
            min-width: 48px;
            border-radius: var(--radius-md);
            background: var(--color-accent-subtle);
            color: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
        }
        .value-content h5 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 4px;
        }
        .value-content p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.6;
        }

        /* ========== SUBSCRIBE CTA ========== */
        .subscribe-section {
            background: var(--color-accent-subtle);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .subscribe-section::before {
            content: '';
            position: absolute;
            top: -30px;
            right: -40px;
            width: 180px;
            height: 180px;
            background: radial-gradient(circle, rgba(74, 124, 116, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .subscribe-title {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
            position: relative;
            z-index: 1;
        }
        .subscribe-desc {
            font-size: 1rem;
            color: var(--color-text-secondary);
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
        }
        .subscribe-form {
            display: flex;
            gap: 10px;
            max-width: 480px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
            flex-wrap: wrap;
            justify-content: center;
        }
        .subscribe-input {
            flex: 1;
            min-width: 220px;
            padding: 13px 18px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            background: #fff;
            transition: border var(--transition-fast), box-shadow var(--transition-fast);
        }
        .subscribe-input:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 4px rgba(74, 124, 116, 0.1);
            outline: none;
        }
        .subscribe-btn {
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            padding: 13px 28px;
            border-radius: var(--radius-md);
            border: none;
            font-size: 0.95rem;
            transition: all var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.3px;
        }
        .subscribe-btn:hover {
            background: var(--color-accent-light);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            background: var(--color-surface);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 20px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-primary);
            text-align: left;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: color var(--transition-fast);
            gap: 12px;
        }
        .faq-question:hover {
            color: var(--color-accent);
        }
        .faq-icon {
            min-width: 28px;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-accent-subtle);
            color: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            transition: all var(--transition-base);
            flex-shrink: 0;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--color-accent);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
        }
        .faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ========== BOTTOM CTA ========== */
        .bottom-cta-section {
            text-align: center;
            padding: 56px 0;
            background: var(--color-primary);
            color: #fff;
            border-radius: var(--radius-xl);
            margin: 0 24px 72px;
            position: relative;
            overflow: hidden;
        }
        @media (max-width: 768px) {
            .bottom-cta-section {
                margin: 0 12px 48px;
                padding: 40px 20px;
            }
        }
        .bottom-cta-section::before {
            content: '';
            position: absolute;
            bottom: -50px;
            right: -60px;
            width: 250px;
            height: 250px;
            background: radial-gradient(circle, rgba(196, 148, 108, 0.25) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .bottom-cta-title {
            font-size: 1.7rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .bottom-cta-desc {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #1a1f26;
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 0 24px;
            font-size: 0.93rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        .footer-brand-name {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.2rem;
            color: #fff;
            margin-bottom: 8px;
            letter-spacing: 0.3px;
        }
        .footer-desc {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.6;
            margin: 0;
        }
        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            transition: color var(--transition-fast);
            font-size: 0.9rem;
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 18px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ========== UTILITY ========== */
        .text-accent {
            color: var(--color-accent) !important;
        }
        .bg-subtle {
            background: var(--color-accent-subtle);
        }
        .visually-hidden-focusable:focus {
            position: static !important;
            width: auto !important;
            height: auto !important;
        }