/* roulang page: index */
:root {
            --brand: #1a56db;
            --brand-dark: #1239a0;
            --brand-light: #60a5fa;
            --accent: #f59e0b;
            --accent-dark: #b45309;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --text-primary: #1e293b;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --border-light: #e2e8f0;
            --radius: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 10px 40px rgba(0,0,0,0.10);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Inter', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            color: var(--text-primary);
            background: var(--bg-light);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .section-padding { padding: 80px 0; }
        .section-title { font-size: 2rem; font-weight: 700; margin-bottom: 0.75rem; letter-spacing: -0.02em; }
        .section-subtitle { font-size: 1.1rem; color: var(--text-secondary); max-width: 640px; margin-bottom: 2.5rem; line-height: 1.7; }
        .card-hover { transition: var(--transition); }
        .card-hover:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
        .gradient-brand { background: linear-gradient(135deg, #1a56db 0%, #3b82f6 100%); }
        .gradient-warm { background: linear-gradient(135deg, #f59e0b 0%, #f97316 100%); }
        .text-gradient { background: linear-gradient(135deg, #1a56db, #60a5fa); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .btn-primary {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 12px 32px; border-radius: 9999px;
            background: linear-gradient(135deg, #1a56db, #3b82f6);
            color: #fff; font-weight: 600; font-size: 1rem;
            border: none; cursor: pointer;
            transition: var(--transition); box-shadow: 0 4px 16px rgba(26,86,219,0.35);
        }
        .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(26,86,219,0.45); }
        .btn-primary:focus-visible { outline: 3px solid #93c5fd; outline-offset: 2px; }
        .btn-secondary {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 12px 32px; border-radius: 9999px;
            background: transparent; color: var(--brand);
            font-weight: 600; font-size: 1rem;
            border: 2px solid var(--brand); cursor: pointer;
            transition: var(--transition);
        }
        .btn-secondary:hover { background: var(--brand); color: #fff; transform: translateY(-2px); }
        .btn-secondary:focus-visible { outline: 3px solid #93c5fd; outline-offset: 2px; }
        .badge {
            display: inline-block; padding: 4px 14px; border-radius: 9999px;
            font-size: 0.8rem; font-weight: 500; background: #dbeafe; color: #1a56db;
        }
        .badge-accent { background: #fef3c7; color: #b45309; }
        .badge-green { background: #d1fae5; color: #065f46; }
        .fade-in { animation: fadeIn 0.8s ease forwards; }
        @keyframes fadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
        .hero-overlay { background: linear-gradient(135deg, rgba(15,23,42,0.75) 0%, rgba(30,58,138,0.55) 100%); }
        .nav-blur { backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); }
        .mobile-menu-open { display: flex !important; }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item summary { list-style: none; cursor: pointer; }
        .faq-item[open] summary .faq-icon { transform: rotate(180deg); }
        .stat-number { font-size: 2.8rem; font-weight: 800; line-height: 1.1; }
        .step-connector { position: absolute; top: 40px; left: 60%; width: 80%; height: 2px; background: linear-gradient(90deg, var(--brand-light), transparent); }
        @media (max-width: 768px) {
            .section-padding { padding: 48px 0; }
            .section-title { font-size: 1.6rem; }
            .stat-number { font-size: 2rem; }
            .step-connector { display: none; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .btn-primary, .btn-secondary { padding: 10px 24px; font-size: 0.9rem; }
            .section-title { font-size: 1.4rem; }
        }
        .grid-card { display: grid; gap: 24px; }
        @media (min-width: 769px) { .grid-3 { grid-template-columns: repeat(3, 1fr); } .grid-2 { grid-template-columns: repeat(2, 1fr); } .grid-4 { grid-template-columns: repeat(4, 1fr); } }
        @media (max-width: 768px) { .grid-3, .grid-2, .grid-4 { grid-template-columns: 1fr; } }
        .cms-card { border: 1px solid var(--border-light); border-radius: var(--radius); overflow: hidden; background: var(--bg-white); transition: var(--transition); }
        .cms-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
        .cms-card img { width: 100%; height: 200px; object-fit: cover; }
        .cms-card-body { padding: 20px; }
        .cms-card-title { font-size: 1.1rem; font-weight: 600; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .cms-card-excerpt { font-size: 0.9rem; color: var(--text-secondary); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 12px; }
        .cms-card-meta { font-size: 0.8rem; color: var(--text-muted); display: flex; gap: 16px; flex-wrap: wrap; }
        .cms-empty { text-align: center; padding: 48px 24px; color: var(--text-muted); font-size: 1.05rem; background: var(--bg-white); border-radius: var(--radius); border: 1px dashed var(--border-light); }
        footer a:hover { color: var(--brand-light); }
        .nav-link { position: relative; font-weight: 500; padding: 8px 0; }
        .nav-link::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: var(--brand); transition: var(--transition); border-radius: 2px; }
        .nav-link:hover::after, .nav-link.active::after { width: 100%; }
        .nav-link.active { color: var(--brand); }
        @media (max-width: 768px) {
            .nav-menu { display: none; position: absolute; top: 100%; left: 0; right: 0; background: var(--bg-white); box-shadow: var(--shadow-lg); border-radius: 0 0 var(--radius) var(--radius); padding: 16px 24px; flex-direction: column; gap: 12px; }
            .nav-menu.open { display: flex; }
            .nav-link::after { display: none; }
        }

/* roulang page: article */
:root {
            --brand-50: #f0f7ff;
            --brand-100: #e0effe;
            --brand-200: #b9dffd;
            --brand-300: #7cc5fb;
            --brand-400: #36a9f5;
            --brand-500: #0c8ee7;
            --brand-600: #0070cc;
            --brand-700: #015ba8;
            --brand-800: #064d8b;
            --brand-900: #0b4173;
            --brand-950: #072949;
            --accent-400: #fbbf24;
            --accent-500: #f59e0b;
            --accent-600: #d97706;
            --gray-50: #f9fafb;
            --gray-100: #f3f4f6;
            --gray-200: #e5e7eb;
            --gray-300: #d1d5db;
            --gray-400: #9ca3af;
            --gray-500: #6b7280;
            --gray-600: #4b5563;
            --gray-700: #374151;
            --gray-800: #1f2937;
            --gray-900: #111827;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background-color: #ffffff;
            color: var(--gray-800);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .gradient-brand {
            background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
        }
        .gradient-accent {
            background: linear-gradient(135deg, var(--accent-400), var(--accent-600));
        }
        .gradient-hero {
            background: linear-gradient(135deg, #0b4173 0%, #0070cc 50%, #0c8ee7 100%);
        }
        .text-gradient {
            background: linear-gradient(135deg, var(--brand-600), var(--brand-400));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-link {
            position: relative;
            font-weight: 500;
            color: var(--gray-600);
            padding: 0.25rem 0;
            transition: color 0.2s ease;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--brand-500);
            transition: width 0.3s ease;
            border-radius: 2px;
        }
        .nav-link:hover {
            color: var(--brand-600);
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .nav-link.active {
            color: var(--brand-600);
        }
        .nav-link.active::after {
            width: 100%;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.625rem 1.5rem;
            border-radius: 0.5rem;
            font-weight: 600;
            font-size: 0.875rem;
            background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
            color: #ffffff;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 14px rgba(12, 142, 231, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(12, 142, 231, 0.4);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--brand-500);
            outline-offset: 2px;
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.625rem 1.5rem;
            border-radius: 0.5rem;
            font-weight: 600;
            font-size: 0.875rem;
            background: transparent;
            color: var(--brand-600);
            border: 2px solid var(--brand-500);
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .btn-outline:hover {
            background: var(--brand-50);
            transform: translateY(-2px);
            box-shadow: 0 4px 14px rgba(12, 142, 231, 0.15);
        }
        .btn-outline:focus-visible {
            outline: 2px solid var(--brand-500);
            outline-offset: 2px;
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .card {
            background: #ffffff;
            border-radius: 1rem;
            border: 1px solid var(--gray-200);
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .card:hover {
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
            transform: translateY(-4px);
            border-color: var(--gray-300);
        }
        .badge {
            display: inline-block;
            padding: 0.25rem 0.75rem;
            border-radius: 9999px;
            font-size: 0.75rem;
            font-weight: 500;
            background: var(--brand-100);
            color: var(--brand-700);
        }
        .badge-accent {
            background: #fef3c7;
            color: #b45309;
        }
        .badge-green {
            background: #d1fae5;
            color: #065f46;
        }
        .tag {
            display: inline-block;
            padding: 0.2rem 0.6rem;
            border-radius: 0.375rem;
            font-size: 0.75rem;
            font-weight: 500;
            background: var(--gray-100);
            color: var(--gray-600);
            transition: all 0.2s ease;
        }
        .tag:hover {
            background: var(--brand-100);
            color: var(--brand-700);
        }
        .section-title {
            font-size: 1.875rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--gray-900);
            line-height: 1.2;
        }
        .section-subtitle {
            font-size: 1.125rem;
            color: var(--gray-500);
            max-width: 600px;
            line-height: 1.6;
        }
        .faq-item {
            border-bottom: 1px solid var(--gray-200);
            padding: 1.25rem 0;
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-question {
            font-weight: 600;
            font-size: 1.0625rem;
            color: var(--gray-800);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: color 0.2s ease;
        }
        .faq-question:hover {
            color: var(--brand-600);
        }
        .faq-answer {
            font-size: 0.9375rem;
            color: var(--gray-500);
            margin-top: 0.75rem;
            line-height: 1.7;
        }
        .article-content {
            font-size: 1.0625rem;
            line-height: 1.85;
            color: var(--gray-700);
        }
        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--gray-900);
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            letter-spacing: -0.01em;
        }
        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--gray-800);
            margin-top: 2rem;
            margin-bottom: 0.75rem;
        }
        .article-content p {
            margin-bottom: 1.25rem;
        }
        .article-content ul,
        .article-content ol {
            margin-bottom: 1.25rem;
            padding-left: 1.5rem;
        }
        .article-content li {
            margin-bottom: 0.5rem;
        }
        .article-content a {
            color: var(--brand-600);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-content a:hover {
            color: var(--brand-800);
        }
        .article-content blockquote {
            border-left: 4px solid var(--brand-400);
            padding: 0.75rem 1.25rem;
            margin: 1.5rem 0;
            background: var(--gray-50);
            border-radius: 0 0.5rem 0.5rem 0;
            color: var(--gray-600);
            font-style: italic;
        }
        .article-content img {
            border-radius: 0.75rem;
            margin: 1.5rem 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
        }
        .article-content pre {
            background: var(--gray-900);
            color: #e5e7eb;
            padding: 1.25rem;
            border-radius: 0.75rem;
            overflow-x: auto;
            font-size: 0.875rem;
            line-height: 1.6;
            margin: 1.5rem 0;
        }
        .article-content code {
            background: var(--gray-100);
            padding: 0.15rem 0.4rem;
            border-radius: 0.25rem;
            font-size: 0.875rem;
            color: var(--gray-800);
        }
        .article-content pre code {
            background: transparent;
            padding: 0;
            color: inherit;
        }
        .article-meta-item {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.875rem;
            color: var(--gray-500);
        }
        .article-meta-item i {
            color: var(--gray-400);
            width: 1rem;
            text-align: center;
        }
        .footer-link {
            color: var(--gray-500);
            font-size: 0.875rem;
            transition: color 0.2s ease;
        }
        .footer-link:hover {
            color: #ffffff;
        }
        .footer-heading {
            font-size: 0.875rem;
            font-weight: 600;
            color: #ffffff;
            letter-spacing: 0.03em;
            text-transform: uppercase;
            margin-bottom: 1rem;
        }
        @media (max-width: 768px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-subtitle {
                font-size: 1rem;
            }
            .article-content {
                font-size: 1rem;
            }
            .article-content h2 {
                font-size: 1.25rem;
            }
            .article-content h3 {
                font-size: 1.125rem;
            }
            .nav-mobile {
                display: block;
            }
            .nav-desktop {
                display: none;
            }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
            .nav-mobile {
                display: none;
            }
            .nav-desktop {
                display: flex;
            }
        }
        @media (min-width: 1025px) {
            .nav-mobile {
                display: none;
            }
            .nav-desktop {
                display: flex;
            }
        }
        @media (max-width: 520px) {
            .section-title {
                font-size: 1.25rem;
            }
            .btn-primary, .btn-outline {
                padding: 0.5rem 1.125rem;
                font-size: 0.8125rem;
            }
            .article-content {
                font-size: 0.9375rem;
            }
            .article-content h2 {
                font-size: 1.125rem;
            }
        }
        .scrollbar-thin::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }
        .scrollbar-thin::-webkit-scrollbar-track {
            background: var(--gray-100);
            border-radius: 3px;
        }
        .scrollbar-thin::-webkit-scrollbar-thumb {
            background: var(--gray-300);
            border-radius: 3px;
        }
        .scrollbar-thin::-webkit-scrollbar-thumb:hover {
            background: var(--gray-400);
        }
        .animate-fade-in {
            animation: fadeIn 0.6s ease forwards;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(12px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .mobile-menu-open {
            max-height: 500px !important;
            opacity: 1 !important;
            padding-top: 0.75rem !important;
            padding-bottom: 0.75rem !important;
        }

/* roulang page: category1 */
:root {
            --brand-50: #eef2ff;
            --brand-100: #e0e7ff;
            --brand-200: #c7d2fe;
            --brand-300: #a5b4fc;
            --brand-400: #818cf8;
            --brand-500: #6366f1;
            --brand-600: #4f46e5;
            --brand-700: #4338ca;
            --brand-800: #3730a3;
            --brand-900: #312e81;
            --accent-500: #f59e0b;
            --accent-600: #d97706;
            --gray-50: #f9fafb;
            --gray-100: #f3f4f6;
            --gray-200: #e5e7eb;
            --gray-300: #d1d5db;
            --gray-400: #9ca3af;
            --gray-500: #6b7280;
            --gray-600: #4b5563;
            --gray-700: #374151;
            --gray-800: #1f2937;
            --gray-900: #111827;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
            --shadow: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
            --transition: all 0.25s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            background: #ffffff;
            color: var(--gray-800);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
            transition: var(--transition);
        }
        input {
            font-family: inherit;
            outline: none;
            border: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .gradient-brand {
            background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
        }
        .gradient-hero {
            background: linear-gradient(135deg, rgba(99,102,241,0.12), rgba(79,70,229,0.06));
        }
        .text-gradient {
            background: linear-gradient(135deg, var(--brand-600), var(--brand-800));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-link {
            position: relative;
            font-weight: 500;
            padding: 6px 0;
            color: var(--gray-600);
            transition: var(--transition);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--brand-500);
            border-radius: 2px;
            transition: var(--transition);
        }
        .nav-link:hover {
            color: var(--brand-600);
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .nav-link.active {
            color: var(--brand-600);
        }
        .nav-link.active::after {
            width: 100%;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius-sm);
            box-shadow: 0 4px 16px rgba(99,102,241,0.35);
            transition: var(--transition);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(99,102,241,0.45);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(99,102,241,0.3);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border: 2px solid var(--brand-500);
            color: var(--brand-600);
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius-sm);
            background: transparent;
            transition: var(--transition);
        }
        .btn-outline:hover {
            background: var(--brand-500);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 4px 16px rgba(99,102,241,0.25);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .card {
            background: #ffffff;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--gray-200);
            transition: var(--transition);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            background: var(--brand-100);
            color: var(--brand-700);
        }
        .badge-accent {
            background: #fef3c7;
            color: #b45309;
        }
        .badge-green {
            background: #d1fae5;
            color: #065f46;
        }
        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--gray-900);
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        .section-sub {
            font-size: 16px;
            color: var(--gray-500);
            max-width: 640px;
            line-height: 1.7;
        }
        .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
            flex-shrink: 0;
        }
        .faq-item {
            border-bottom: 1px solid var(--gray-200);
            padding: 20px 0;
            cursor: pointer;
        }
        .faq-item:first-child {
            border-top: 1px solid var(--gray-200);
        }
        .faq-question {
            font-weight: 600;
            font-size: 17px;
            color: var(--gray-800);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }
        .faq-question .icon {
            font-size: 20px;
            color: var(--brand-500);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question .icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding-top: 0;
            color: var(--gray-600);
            font-size: 15px;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-top: 14px;
        }
        .hero-overlay {
            position: relative;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }
        .hero-overlay::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(17,24,39,0.82), rgba(17,24,39,0.60));
            z-index: 1;
        }
        .hero-overlay > * {
            position: relative;
            z-index: 2;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 28px 16px;
            background: rgba(255,255,255,0.06);
            border-radius: var(--radius);
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255,255,255,0.08);
        }
        .stat-number {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
        }
        .stat-label {
            font-size: 14px;
            color: rgba(255,255,255,0.7);
            margin-top: 6px;
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: #fff;
            background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
            flex-shrink: 0;
        }
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }
            .section-title {
                font-size: 28px;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            .section-title {
                font-size: 24px;
            }
            .section-sub {
                font-size: 15px;
            }
            .stat-number {
                font-size: 28px;
            }
            .step-number {
                width: 40px;
                height: 40px;
                font-size: 17px;
            }
            .faq-question {
                font-size: 15px;
            }
            .hero-overlay {
                background-position: center center;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item {
                padding: 20px 12px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 12px;
            }
            .section-title {
                font-size: 20px;
            }
            .section-sub {
                font-size: 14px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-number {
                font-size: 24px;
            }
            .stat-label {
                font-size: 12px;
            }
            .feature-icon {
                width: 44px;
                height: 44px;
                font-size: 18px;
            }
            .btn-primary, .btn-outline {
                padding: 10px 20px;
                font-size: 14px;
            }
            .step-number {
                width: 36px;
                height: 36px;
                font-size: 15px;
            }
            .faq-question {
                font-size: 14px;
            }
            .faq-question .icon {
                font-size: 18px;
            }
        }
        .smooth-scroll {
            scroll-behavior: smooth;
        }
        .focus-ring:focus-visible {
            outline: 2px solid var(--brand-500);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .hover-lift {
            transition: var(--transition);
        }
        .hover-lift:hover {
            transform: translateY(-2px);
        }
        .card-img-top {
            width: 100%;
            height: 200px;
            object-fit: cover;
            object-position: center;
            border-radius: var(--radius) var(--radius) 0 0;
        }
        @media (max-width: 768px) {
            .card-img-top {
                height: 160px;
            }
        }