/* roulang page: index */
:root {
            --primary: #0F766E;
            --primary-dark: #134E4A;
            --primary-darker: #0F3D3A;
            --primary-light: #14B8A6;
            --accent: #D97706;
            --accent-light: #F59E0B;
            --warm-orange: #EA580C;
            --bg: #F8F9F7;
            --card-bg: #FFFFFF;
            --text-main: #1E293B;
            --text-body: #334155;
            --text-muted: #64748B;
            --border: #E2E8F0;
            --radius: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.12);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: var(--bg);
            color: var(--text-body);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            text-decoration: none;
            color: inherit;
        }

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

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }

        .wrap {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        @media (min-width: 640px) {
            .wrap {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }

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

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: #fff;
            border-bottom: 1px solid transparent;
            transition: box-shadow 0.3s ease, border-color 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
            border-bottom-color: var(--border);
        }

        .nav-link {
            position: relative;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            padding: 0.4rem 0;
            transition: color 0.2s;
        }

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

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

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -4px;
            width: 100%;
            height: 3px;
            border-radius: 99px;
            background: var(--primary);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            padding: 0.6rem 1.5rem;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid var(--primary);
            transition: all 0.25s ease;
            gap: 8px;
            line-height: 1.2;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }

        .btn-primary:focus-visible {
            outline: 3px solid rgba(15, 118, 110, 0.4);
            outline-offset: 2px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            padding: 0.6rem 1.5rem;
            background: #fff;
            color: var(--primary);
            border-radius: 10px;
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid var(--primary);
            transition: all 0.25s ease;
            gap: 8px;
            line-height: 1.2;
        }

        .btn-secondary:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            padding: 0.6rem 1.5rem;
            background: transparent;
            color: #fff;
            border-radius: 10px;
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid rgba(255, 255, 255, 0.65);
            transition: all 0.25s ease;
            gap: 8px;
        }

        .btn-ghost:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-2px);
        }

        .btn-accent {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 48px;
            padding: 0.7rem 2rem;
            background: var(--accent-light);
            color: #134E4A;
            border-radius: 10px;
            font-weight: 700;
            font-size: 1.05rem;
            border: 2px solid var(--accent-light);
            transition: all 0.25s ease;
            gap: 8px;
        }

        .btn-accent:hover {
            background: var(--accent);
            border-color: var(--accent);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .hero-section {
            position: relative;
            overflow: hidden;
            display: flex;
            align-items: center;
            min-height: 640px;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(15, 78, 74, 0.96) 0%, rgba(15, 78, 74, 0.88) 40%, rgba(15, 78, 74, 0.50) 100%);
        }

        .hero-title {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            line-height: 1.25;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.02em;
        }

        .hero-subtitle {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.8;
            max-width: 560px;
        }

        .hero-card {
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
        }

        .stats-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
            letter-spacing: -0.01em;
        }

        .stats-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 4px;
        }

        .section-tag {
            display: inline-block;
            background: rgba(15, 118, 110, 0.08);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            padding: 0.35rem 1rem;
            border-radius: 999px;
            margin-bottom: 1rem;
        }

        .section-tag-light {
            background: rgba(255, 255, 255, 0.15);
            color: var(--accent-light);
        }

        .section-title {
            font-size: clamp(1.4rem, 2.5vw, 2rem);
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.35;
            letter-spacing: -0.01em;
        }

        .section-desc {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-top: 0.75rem;
            line-height: 1.7;
        }

        .solution-card {
            display: block;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 1.75rem 1.5rem;
            transition: all 0.3s ease;
            position: relative;
            height: 100%;
        }

        .solution-card:hover {
            border-color: rgba(15, 118, 110, 0.4);
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }

        .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: rgba(217, 119, 6, 0.1);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 1.25rem;
            transition: background 0.3s ease;
        }

        .solution-card:hover .card-icon {
            background: rgba(217, 119, 6, 0.2);
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            color: var(--primary);
            font-size: 0.9rem;
            margin-top: 1rem;
            transition: color 0.2s;
        }

        .solution-card:hover .card-link {
            color: var(--primary-dark);
        }

        .data-card {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 12px;
            padding: 1.25rem;
            backdrop-filter: blur(4px);
            transition: background 0.3s ease, border-color 0.3s ease;
        }

        .data-card:hover {
            background: rgba(255, 255, 255, 0.14);
            border-color: rgba(255, 255, 255, 0.25);
        }

        .data-card-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            display: flex;
            align-items: center;
        }

        .data-card-text {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 0.4rem;
            line-height: 1.6;
        }

        .news-badge {
            display: inline-block;
            background: rgba(15, 118, 110, 0.1);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.25rem 0.75rem;
            border-radius: 999px;
            white-space: nowrap;
        }

        .line-clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 12px;
            overflow: hidden;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .faq-item.active {
            border-color: rgba(15, 118, 110, 0.3);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.25rem 1.5rem;
            background: transparent;
            border: none;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            text-align: left;
            transition: color 0.3s ease;
        }

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

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

        .faq-question .fa-chevron-down {
            transition: transform 0.3s ease;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .faq-item.active .faq-question .fa-chevron-down {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 1.5rem;
            color: var(--text-body);
            font-size: 0.95rem;
            line-height: 1.8;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding-bottom: 1.3rem;
        }

        .footer-links li {
            margin-bottom: 0.6rem;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: color 0.2s;
        }

        .footer-links a:hover {
            color: var(--accent-light);
        }

        .form-label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 0.35rem;
        }

        .form-input {
            width: 100%;
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 0.6rem 0.9rem;
            font-size: 0.95rem;
            background: #fff;
            color: var(--text-main);
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
            appearance: none;
        }

        .form-input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.1);
        }

        .modal-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            backdrop-filter: blur(4px);
            z-index: 90;
        }

        .modal-dialog {
            position: relative;
            background: #fff;
            border-radius: 16px;
            max-width: 480px;
            width: 100%;
            margin: 0 1rem;
            padding: 2rem;
            box-shadow: var(--shadow-lg);
            max-height: calc(100vh - 2rem);
            overflow-y: auto;
            z-index: 91;
        }

        .mobile-nav-link {
            display: block;
            font-size: 1.125rem;
            font-weight: 500;
            color: var(--text-main);
            padding: 0.85rem 0;
            border-bottom: 1px solid var(--border);
            transition: color 0.2s;
        }

        .mobile-nav-link:hover,
        .mobile-nav-link.active {
            color: var(--primary);
        }

        .cta-band {
            position: relative;
            overflow: hidden;
        }

        .cta-band::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(90deg, rgba(15, 78, 74, 0.98) 0%, rgba(19, 78, 74, 0.92) 100%);
        }

        .cta-band::after {
            content: '';
            position: absolute;
            right: -60px;
            top: -40px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.12);
            background: radial-gradient(circle, rgba(245, 158, 11, 0.18) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-band-content {
            position: relative;
            z-index: 2;
        }

        .privacy-note {
            background: rgba(255, 255, 255, 0.6);
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 0.9rem 1.1rem;
            font-size: 0.78rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .privacy-note strong {
            color: var(--text-body);
        }

        @media (max-width: 1023px) {
            .desktop-nav {
                display: none;
            }
        }

        @media (max-width: 640px) {
            .hero-section {
                min-height: 560px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #0F766E;
            --primary-dark: #134E4A;
            --primary-light: #14B8A6;
            --accent: #D97706;
            --accent-light: #F59E0B;
            --accent-orange: #EA580C;
            --bg: #F8F9F7;
            --surface: #FFFFFF;
            --text: #1F2937;
            --text-body: #374151;
            --text-weak: #6B7280;
            --border: #E5E7EB;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-sm: 8px;
            --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.12);
            --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text-body);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button {
            font-family: inherit;
            cursor: pointer;
        }
        .wrap {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }
        @media (min-width: 640px) {
            .wrap {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .wrap {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid transparent;
            transition: border-color .3s, box-shadow .3s;
        }
        .site-header.scrolled {
            border-color: var(--border);
            box-shadow: 0 1px 10px rgba(15, 118, 110, 0.06);
        }
        .nav-link {
            position: relative;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            padding: 0.5rem 0.25rem;
            transition: color .25s;
        }
        .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
            transition: width .25s ease;
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            width: 100%;
        }
        .mobile-nav-link {
            display: block;
            padding: 1rem 0.5rem;
            font-size: 1.1rem;
            font-weight: 500;
            color: var(--text-body);
            border-bottom: 1px solid #f3f4f6;
            transition: color .2s;
        }
        .mobile-nav-link:hover {
            color: var(--primary);
        }
        .mobile-nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }

        /* ===== Buttons ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            min-height: 44px;
            padding: 0.65rem 1.5rem;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            border: 1px solid transparent;
            transition: background .25s, box-shadow .25s, transform .15s;
            box-shadow: var(--shadow-sm);
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: #0b5e58;
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: var(--shadow-xs);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(15, 118, 110, 0.35);
            outline-offset: 2px;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            min-height: 44px;
            padding: 0.65rem 1.5rem;
            border-radius: var(--radius-sm);
            background: transparent;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.95rem;
            border: 1px solid rgba(15, 118, 110, 0.35);
            transition: background .25s, border-color .25s, transform .15s;
        }
        .btn-secondary:hover {
            background: rgba(15, 118, 110, 0.06);
            border-color: var(--primary);
        }
        .btn-secondary:active {
            transform: translateY(1px);
        }
        .btn-secondary:focus-visible {
            outline: 3px solid rgba(15, 118, 110, 0.3);
            outline-offset: 2px;
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            min-height: 44px;
            padding: 0.65rem 1.5rem;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            border: 1px solid rgba(255, 255, 255, 0.35);
            backdrop-filter: blur(4px);
            transition: background .25s, border-color .25s;
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.18);
            border-color: rgba(255, 255, 255, 0.6);
        }

        /* ===== Hero ===== */
        .hero-bg {
            background-image: linear-gradient(135deg, rgba(19, 78, 74, 0.88), rgba(15, 118, 110, 0.82)),
                url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            color: #fff;
            position: relative;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 0.35rem 0.9rem;
            border-radius: 999px;
            font-size: 0.82rem;
            font-weight: 500;
            backdrop-filter: blur(6px);
            letter-spacing: 0.02em;
        }

        /* ===== Sections ===== */
        .section {
            padding: 72px 0;
        }
        @media (min-width: 768px) {
            .section {
                padding: 96px 0;
            }
        }
        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--primary);
            margin-bottom: 0.6rem;
        }
        .section-title {
            font-size: clamp(1.4rem, 2.5vw, 2rem);
            font-weight: 700;
            color: var(--text);
            line-height: 1.3;
            letter-spacing: -0.01em;
        }
        .section-intro {
            color: var(--text-weak);
            font-size: 1rem;
            max-width: 620px;
            line-height: 1.75;
        }

        /* ===== Cards ===== */
        .feature-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 1.75rem;
            box-shadow: var(--shadow-xs);
            transition: box-shadow .3s, transform .3s, border-color .3s;
            height: 100%;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(15, 118, 110, 0.25);
        }
        .feature-icon {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            background: rgba(217, 119, 6, 0.1);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            margin-bottom: 1rem;
            transition: background .3s, color .3s;
        }
        .feature-card:hover .feature-icon {
            background: rgba(217, 119, 6, 0.2);
        }

        /* ===== List / Check ===== */
        .check-list {
            list-style: none;
            padding: 0;
        }
        .check-list li {
            display: flex;
            gap: 0.75rem;
            align-items: flex-start;
            padding: 0.55rem 0;
            color: var(--text-body);
            font-size: 0.95rem;
        }
        .check-list li i {
            color: var(--primary);
            margin-top: 0.25rem;
            font-size: 0.9rem;
        }
        .step-num {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: rgba(15, 118, 110, 0.1);
            color: var(--primary);
            font-weight: 700;
            font-size: 0.85rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            margin-top: 0.1rem;
        }

        /* ===== Trouble Card ===== */
        .trouble-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius);
            padding: 1.5rem;
            backdrop-filter: blur(4px);
            transition: background .3s, transform .3s;
            height: 100%;
        }
        .trouble-card:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-3px);
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 0.85rem;
            overflow: hidden;
            transition: border-color .3s, box-shadow .3s;
        }
        .faq-item.open {
            border-color: rgba(15, 118, 110, 0.35);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            width: 100%;
            padding: 1.1rem 1.25rem;
            background: none;
            border: none;
            text-align: left;
            font-size: 1rem;
            font-weight: 500;
            color: var(--text);
            transition: color .2s;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(15, 118, 110, 0.08);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            transition: background .3s, transform .3s;
        }
        .faq-item.open .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
        }
        .faq-answer-inner {
            padding: 0 1.25rem 1.25rem;
            color: var(--text-weak);
            font-size: 0.93rem;
            line-height: 1.75;
            border-top: 1px solid #f3f4f6;
            padding-top: 0.85rem;
        }

        /* ===== CTA Banner ===== */
        .cta-banner {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            position: relative;
            overflow: hidden;
        }
        .cta-banner::after {
            content: "";
            position: absolute;
            right: -40px;
            top: -40px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }
        .cta-banner::before {
            content: "";
            position: absolute;
            right: 40px;
            bottom: -60px;
            width: 120px;
            height: 120px;
            border-radius: 50%;
            background: rgba(245, 158, 11, 0.12);
        }

        /* ===== Footer ===== */
        .footer-links {
            list-style: none;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 0.55rem;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: color .25s, padding-left .25s;
        }
        .footer-links a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }

        /* ===== Modal ===== */
        .modal-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            backdrop-filter: blur(4px);
            z-index: 999;
            display: none;
            align-items: center;
            justify-content: center;
            padding: 1rem;
        }
        .modal-overlay.active {
            display: flex;
        }
        .modal-card {
            background: #fff;
            border-radius: var(--radius-lg);
            width: 100%;
            max-width: 480px;
            max-height: 92vh;
            overflow-y: auto;
            box-shadow: var(--shadow-lg);
            animation: modalIn .3s ease;
        }
        @keyframes modalIn {
            from {
                opacity: 0;
                transform: translateY(24px) scale(0.96);
            }
            to {
                opacity: 1;
                transform: translateY(0) scale(1);
            }
        }
        .form-control {
            width: 100%;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 0.7rem 0.9rem;
            font-size: 0.94rem;
            color: var(--text);
            background: #fafaf9;
            transition: border-color .25s, box-shadow .25s, background .25s;
            outline: none;
        }
        .form-control:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12);
        }
        .privacy-note {
            font-size: 0.78rem;
            color: var(--text-weak);
            line-height: 1.65;
            background: rgba(15, 118, 110, 0.04);
            border-left: 3px solid rgba(15, 118, 110, 0.3);
            padding: 0.75rem 0.9rem;
            border-radius: 0 8px 8px 0;
        }

        /* ===== Misc ===== */
        .divider-dot {
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--accent);
            display: inline-block;
            margin: 0 0.4rem;
            vertical-align: middle;
        }
        .img-card {
            border-radius: var(--radius);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            border: 1px solid var(--border);
        }
        .img-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .ticker-bar {
            background: rgba(255, 255, 255, 0.06);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .section-grid-bg {
            background-image: linear-gradient(rgba(15, 118, 110, 0.04) 1px, transparent 1px),
                linear-gradient(90deg, rgba(15, 118, 110, 0.04) 1px, transparent 1px);
            background-size: 32px 32px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .desktop-nav {
                display: none !important;
            }
            .nav-cta {
                display: none !important;
            }
        }
        @media (max-width: 640px) {
            .section {
                padding: 60px 0;
            }
            .cta-banner {
                padding: 1.8rem;
            }
            .feature-card {
                padding: 1.4rem;
            }
        }
        @media (max-width: 480px) {
            .hero-title {
                font-size: 1.6rem;
                line-height: 1.4;
            }
            .btn-primary,
            .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
        }

/* roulang page: article */
:root {
  --primary: #0F766E;
  --primary-dark: #134E4A;
  --primary-light: #14B8A6;
  --accent: #D97706;
  --accent-light: #F59E0B;
  --warm: #EA580C;
  --bg: #F8F9F7;
  --card: #FFFFFF;
  --text: #1F2937;
  --text-body: #4B5563;
  --text-muted: #9CA3AF;
  --border: #E5E7EB;
  --radius: 14px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
  --font-sans: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text-body);
  font-family: var(--font-sans);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; transition: color .2s ease, background .2s ease, border-color .2s ease, transform .2s ease; }
button { font-family: inherit; cursor: pointer; }

.wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 1rem;
  padding-right: 1rem;
}
@media (min-width: 640px) { .wrap { padding-left: 1.5rem; padding-right: 1.5rem; } }
@media (min-width: 1024px) { .wrap { padding-left: 2rem; padding-right: 2rem; } }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, box-shadow .3s;
}
.site-header.scrolled {
  border-bottom-color: rgba(15, 118, 110, 0.12);
  box-shadow: 0 2px 16px rgba(15, 118, 110, 0.06);
}

.nav-link {
  position: relative;
  font-weight: 500;
  font-size: 0.92rem;
  color: var(--text-body);
  padding: 0.4rem 0;
  transition: color .2s;
  white-space: nowrap;
}
.nav-link:hover { color: var(--primary); }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  border-radius: 2px;
  background: var(--primary);
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  font-size: 0.92rem;
  padding: 0.7rem 1.5rem;
  border-radius: 10px;
  min-height: 44px;
  border: none;
  transition: all .25s;
  box-shadow: 0 2px 8px rgba(15, 118, 110, 0.18);
}
.btn-primary:hover { background: #0B5C56; box-shadow: 0 4px 14px rgba(15, 118, 110, 0.25); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:focus-visible { outline: 3px solid rgba(15, 118, 110, 0.35); outline-offset: 2px; }

.btn-white {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: #fff;
  color: var(--primary-dark);
  font-weight: 600;
  font-size: 0.92rem;
  padding: 0.7rem 1.5rem;
  border-radius: 10px;
  min-height: 44px;
  transition: all .25s;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}
.btn-white:hover { background: rgba(255, 255, 255, 0.92); transform: translateY(-1px); box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12); }
.btn-white:focus-visible { outline: 3px solid rgba(255, 255, 255, 0.5); outline-offset: 2px; }

/* Mobile nav */
.mobile-nav-link {
  display: block;
  padding: 0.9rem 0;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text-body);
  border-bottom: 1px solid var(--border);
  transition: color .2s;
}
.mobile-nav-link:hover { color: var(--primary); }
.mobile-nav-link.active { color: var(--primary); font-weight: 600; }

/* Breadcrumb */
.breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 0.4rem; font-size: 0.85rem; }
.breadcrumb a { color: rgba(255, 255, 255, 0.75); transition: color .2s; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .sep { color: rgba(255, 255, 255, 0.4); }
.breadcrumb .current { color: rgba(255, 255, 255, 0.95); font-weight: 500; }

/* Article content */
.article-content { font-size: 1rem; line-height: 1.8; color: var(--text-body); }
.article-content p { margin: 0 0 1.5em; }
.article-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  margin: 2.2em 0 0.8em;
  padding-bottom: 0.4em;
  border-bottom: 1px solid var(--border);
  line-height: 1.35;
}
.article-content h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text);
  margin: 1.8em 0 0.6em;
  line-height: 1.4;
}
.article-content ul,
.article-content ol { margin: 0 0 1.5em; padding-left: 1.5em; }
.article-content ul li,
.article-content ol li { margin-bottom: 0.5em; }
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content blockquote {
  margin: 1.5em 0;
  padding: 1em 1.5em;
  border-left: 4px solid var(--primary);
  background: rgba(15, 118, 110, 0.06);
  border-radius: 0 10px 10px 0;
  color: var(--text);
}
.article-content img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: 14px;
  margin: 1.8em auto;
  box-shadow: var(--shadow-md);
}
.article-content figure { margin: 1.8em 0; text-align: center; }
.article-content figcaption { font-size: 0.85rem; color: var(--text-muted); margin-top: 0.6em; }
.article-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.article-content a:hover { color: var(--accent); }
.article-content hr { border: none; border-top: 1px solid var(--border); margin: 2em 0; }
.article-content code { background: rgba(15, 118, 110, 0.08); padding: 0.15em 0.45em; border-radius: 6px; font-size: 0.9em; }
.article-content pre { background: #0F172A; color: #E2E8F0; padding: 1.2em 1.5em; border-radius: 12px; overflow-x: auto; margin: 1.8em 0; font-size: 0.9rem; }
.article-content pre code { background: none; padding: 0; border-radius: 0; color: inherit; }

/* Tag */
.tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary);
  background: rgba(15, 118, 110, 0.08);
  border-radius: 999px;
  padding: 0.25em 0.8em;
  letter-spacing: 0.02em;
}

/* Rec card */
.rec-card {
  display: block;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  transition: all .3s ease;
  height: 100%;
}
.rec-card:hover {
  border-color: rgba(15, 118, 110, 0.4);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.rec-card img {
  width: 100%;
  height: 10rem;
  object-fit: cover;
  border-radius: 10px;
  transition: transform .5s ease;
}
.rec-card:hover img { transform: scale(1.04); }

/* FAQ */
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color .25s, box-shadow .25s;
}
.faq-item.open { border-color: rgba(15, 118, 110, 0.35); box-shadow: var(--shadow-sm); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: none;
  border: none;
  padding: 1.2rem 1.4rem;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  transition: color .2s;
}
.faq-question:hover { color: var(--primary); }
.faq-question .fa-chevron-down { color: var(--primary); transition: transform .3s ease; flex-shrink: 0; }
.faq-item.open .fa-chevron-down { transform: rotate(180deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-answer p { padding: 0 1.4rem 1.3rem; margin: 0; opacity: 0; transition: opacity .3s ease; color: var(--text-body); font-size: 0.95rem; line-height: 1.8; }
.faq-item.open .faq-answer { max-height: 400px; }
.faq-item.open .faq-answer p { opacity: 1; }

/* Footer links */
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 0.7rem; font-size: 0.9rem; }
.footer-links a { color: rgba(255, 255, 255, 0.6); font-size: 0.9rem; transition: color .2s; }
.footer-links a:hover { color: var(--accent-light); }

/* Arrow icon helper */
.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
  color: var(--primary);
  font-size: 0.9rem;
  transition: gap .25s ease;
}
.arrow-link:hover { gap: 0.65rem; color: var(--accent); }

/* Focus visible helper */
a:focus-visible, button:focus-visible {
  outline: 3px solid rgba(15, 118, 110, 0.35);
  outline-offset: 2px;
  border-radius: 6px;
}

/* roulang page: category2 */
:root {
            --primary: #0F766E;
            --primary-dark: #134E4A;
            --primary-light: #17A398;
            --accent: #D97706;
            --accent-light: #F0B35C;
            --warm-bg: #F8F9F7;
            --card-bg: #FFFFFF;
            --text-heading: #1F2937;
            --text-body: #4B5563;
            --text-muted: #9CA3AF;
            --border: #E5E7EB;
            --border-light: #F0F1EF;
            --radius-lg: 14px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, .06);
            --shadow-md: 0 4px 14px rgba(0, 0, 0, .08);
            --transition: all .25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
            background: var(--warm-bg);
            color: var(--text-body);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        .wrap {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 640px) {
            .wrap {
                padding: 0 16px;
            }
        }

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

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

        button {
            font-family: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5 {
            color: var(--text-heading);
            line-height: 1.35;
            font-weight: 700;
        }

        /* ===== Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(255, 255, 255, .95);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid transparent;
            transition: var(--transition);
        }

        .site-header.scrolled {
            border-color: var(--border);
            box-shadow: var(--shadow-sm);
        }

        .nav-link {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            padding: 6px 2px;
            letter-spacing: .02em;
        }

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

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

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            border-radius: 2px;
            background: var(--accent);
        }

        .mobile-nav-link {
            display: block;
            font-size: 18px;
            font-weight: 500;
            color: var(--text-body);
            padding: 14px 0;
            border-bottom: 1px solid var(--border-light);
        }

        .mobile-nav-link:hover,
        .mobile-nav-link.active {
            color: var(--primary);
        }

        /* ===== Buttons ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 44px;
            padding: 10px 24px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .btn-primary:hover {
            background: #0d6a63;
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-primary:focus {
            outline: 3px solid rgba(15, 118, 110, .3);
            outline-offset: 2px;
        }

        .btn-primary.btn-light {
            background: #fff;
            color: var(--primary);
        }

        .btn-primary.btn-light:hover {
            background: #f8faf9;
            color: var(--primary-dark);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 44px;
            padding: 10px 24px;
            border-radius: 10px;
            background: transparent;
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            border: 1.5px solid rgba(255, 255, 255, .5);
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-ghost:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, .1);
        }

        .btn-ghost:focus {
            outline: 3px solid rgba(255, 255, 255, .25);
            outline-offset: 2px;
        }

        /* ===== Category Hero ===== */
        .category-hero {
            position: relative;
            padding: 140px 0 90px;
            background-position: center;
            background-size: cover;
            background-color: var(--primary-dark);
            isolation: isolate;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(19, 78, 74, .92) 0%, rgba(15, 118, 110, .78) 100%);
            z-index: 1;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background-image: radial-gradient(rgba(255, 255, 255, .06) 1px, transparent 1px);
            background-size: 32px 32px;
            z-index: 1;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(240, 179, 92, .18);
            border: 1px solid rgba(240, 179, 92, .35);
            color: var(--accent-light);
            font-size: 13px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 999px;
            margin-bottom: 22px;
            letter-spacing: .03em;
        }

        .category-hero h1 {
            font-size: clamp(1.9rem, 4.2vw, 3rem);
            color: #fff;
            line-height: 1.25;
            font-weight: 800;
            letter-spacing: -0.01em;
            margin-bottom: 20px;
            text-shadow: 0 2px 12px rgba(0, 0, 0, .18);
        }

        .category-hero h1 span {
            color: var(--accent-light);
        }

        .hero-sub {
            font-size: clamp(1rem, 1.6vw, 1.15rem);
            color: rgba(255, 255, 255, .85);
            max-width: 640px;
            line-height: 1.8;
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 22px;
        }

        .hero-note {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, .65);
            font-size: 14px;
        }

        .hero-note i {
            color: var(--accent-light);
        }

        /* ===== Content Sections ===== */
        .content-section {
            padding: 88px 0;
        }

        .content-section.alt {
            background: #fff;
        }

        .content-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .content-text h2 {
            font-size: clamp(1.45rem, 2.4vw, 1.9rem);
            margin-bottom: 20px;
            color: var(--text-heading);
            position: relative;
            padding-bottom: 16px;
        }

        .content-text h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 48px;
            height: 3px;
            border-radius: 3px;
            background: var(--accent);
        }

        .content-text p {
            font-size: 15.5px;
            line-height: 1.85;
            color: var(--text-body);
            margin-bottom: 16px;
        }

        .content-text p:last-child {
            margin-bottom: 0;
        }

        .content-image {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }

        .content-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 280px;
        }

        .content-image::after {
            content: '';
            position: absolute;
            inset: 0;
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: var(--radius-lg);
            pointer-events: none;
        }

        .content-points {
            margin-top: 12px;
        }

        .content-points li {
            display: flex;
            gap: 10px;
            align-items: flex-start;
            padding: 8px 0;
            font-size: 15px;
            color: var(--text-body);
        }

        .content-points li i {
            color: var(--primary);
            margin-top: 4px;
            flex-shrink: 0;
        }

        /* ===== Data Band ===== */
        .data-band {
            background: linear-gradient(160deg, var(--primary-dark) 0%, #0b3b37 100%);
            padding: 68px 0;
            position: relative;
            overflow: hidden;
        }

        .data-band::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(240, 179, 92, .08);
        }

        .data-item {
            text-align: center;
            padding: 20px 12px;
            position: relative;
        }

        .data-item+.data-item::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 1px;
            height: 56px;
            background: rgba(255, 255, 255, .15);
        }

        @media (max-width: 767px) {
            .data-item+.data-item::before {
                display: none;
            }
        }

        .data-num {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
            font-feature-settings: 'tnum';
        }

        .data-num span {
            color: var(--accent-light);
        }

        .data-label {
            font-size: 14px;
            color: rgba(255, 255, 255, .65);
            margin-top: 8px;
            letter-spacing: .04em;
        }

        /* ===== Steps ===== */
        .steps-section {
            padding: 88px 0;
            background: #fff;
        }

        .section-title {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 56px;
        }

        .section-title h2 {
            font-size: clamp(1.5rem, 2.6vw, 2.1rem);
            margin-bottom: 16px;
        }

        .section-title p {
            color: var(--text-body);
            font-size: 15.5px;
            line-height: 1.8;
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }

        @media (max-width: 1023px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 580px) {
            .steps-grid {
                grid-template-columns: 1fr;
            }
        }

        .step-card {
            background: var(--warm-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 32px 26px;
            position: relative;
            transition: var(--transition);
        }

        .step-card:hover {
            border-color: rgba(15, 118, 110, .25);
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(15, 118, 110, .1);
            color: var(--primary);
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 18px;
            font-variant-numeric: tabular-nums;
        }

        .step-card h3 {
            font-size: 17px;
            margin-bottom: 10px;
        }

        .step-card p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* ===== CTA Band ===== */
        .cta-band {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            padding: 56px 0;
        }

        .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
            flex-wrap: wrap;
        }

        .cta-inner h2 {
            color: #fff;
            font-size: clamp(1.3rem, 2vw, 1.7rem);
            margin-bottom: 6px;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, .8);
            font-size: 15px;
        }

        @media (max-width: 767px) {
            .cta-inner {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 88px 0;
        }

        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item.open {
            border-color: rgba(15, 118, 110, .3);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 15.5px;
            font-weight: 600;
            color: var(--text-heading);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }

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

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--warm-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            color: var(--primary);
            flex-shrink: 0;
            transition: var(--transition);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
        }

        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 14.5px;
            line-height: 1.8;
            color: var(--text-body);
            border-top: 1px solid var(--border-light);
            padding-top: 16px;
            margin: 0 24px 20px;
            padding-left: 0;
            padding-right: 0;
        }

        .faq-answer-inner p {
            margin-bottom: 8px;
        }

        .faq-answer-inner p:last-child {
            margin-bottom: 0;
        }

        /* ===== Final CTA ===== */
        .final-cta {
            padding: 72px 0 88px;
            text-align: center;
            background: var(--warm-bg);
        }

        .final-cta h2 {
            font-size: clamp(1.4rem, 2.4vw, 1.9rem);
            margin-bottom: 14px;
        }

        .final-cta p {
            color: var(--text-body);
            max-width: 560px;
            margin: 0 auto 28px;
            font-size: 15.5px;
        }

        /* ===== Privacy Note ===== */
        .privacy-note {
            background: #fff;
            border-top: 1px solid var(--border);
            padding: 20px 0;
        }

        .privacy-note p {
            font-size: 13px;
            color: var(--text-muted);
            text-align: center;
            line-height: 1.6;
            max-width: 820px;
            margin: 0 auto;
        }

        /* ===== Footer ===== */
        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, .55);
            font-size: 14px;
        }

        .footer-links a:hover {
            color: var(--accent-light);
        }

        .footer-links li i {
            color: var(--accent-light);
        }

        /* ===== Modal ===== */
        .modal-mask {
            position: fixed;
            inset: 0;
            z-index: 200;
            background: rgba(0, 0, 0, .5);
            backdrop-filter: blur(4px);
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }

        .modal-mask.hidden {
            display: none;
        }

        .modal-panel {
            background: #fff;
            border-radius: 16px;
            width: 100%;
            max-width: 480px;
            padding: 36px 32px;
            box-shadow: 0 20px 50px rgba(0, 0, 0, .18);
            max-height: 90vh;
            overflow-y: auto;
        }

        .modal-panel h3 {
            font-size: 1.4rem;
            margin-bottom: 6px;
            color: var(--text-heading);
        }

        .modal-panel .modal-sub {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .modal-close {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: none;
            background: var(--warm-bg);
            color: var(--text-body);
            font-size: 18px;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .modal-close:hover {
            background: #e8ece9;
            color: var(--text-heading);
        }

        .modal-panel form input,
        .modal-panel form select,
        .modal-panel form textarea {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border);
            border-radius: 10px;
            font-size: 14.5px;
            font-family: inherit;
            color: var(--text-heading);
            background: #fcfcfd;
            margin-bottom: 14px;
            transition: var(--transition);
        }

        .modal-panel form input:focus,
        .modal-panel form select:focus,
        .modal-panel form textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(15, 118, 110, .1);
            background: #fff;
        }

        .modal-panel form textarea {
            resize: vertical;
            min-height: 80px;
        }

        .modal-panel form select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16' fill='none'%3E%3Cpath d='M4 6l4 4 4-4' stroke='%239CA3AF' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
        }

        .privacy-check {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
            margin-bottom: 18px;
            cursor: pointer;
        }

        .privacy-check input {
            width: auto;
            margin-top: 3px;
            accent-color: var(--primary);
        }

        /* ===== Mobile Menu Animation ===== */
        #mobileMenu {
            transition: opacity .3s ease;
        }

        #mobileMenu.hidden {
            display: none;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1023px) {
            .content-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }

            .content-image {
                order: -1;
            }
        }

        @media (max-width: 767px) {
            .category-hero {
                padding: 120px 0 64px;
            }

            .content-section,
            .steps-section,
            .faq-section {
                padding: 60px 0;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .hero-actions .btn-primary,
            .hero-actions .btn-ghost {
                width: 100%;
            }
        }

        @media (max-width: 480px) {
            .data-num {
                font-size: 2rem;
            }

            .step-card {
                padding: 24px 20px;
            }

            .modal-panel {
                padding: 28px 20px;
                margin: 0 10px;
            }
        }