:root {
            --primary: #7c3aed;
            --primary-dark: #5b21b6;
            --secondary: #f59e0b;
            --accent: #10b981;
            --dark: #1e1b4b;
            --light: #f5f3ff;
            --gray: #6b7280;
            --white: #ffffff;
            --border: #e5e7eb;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
            --radius: 16px;
            --max-width: 1200px;
        }
        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.7;
            color: var(--dark);
            background: var(--white);
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: var(--primary);
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--white);
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
            border-bottom: 2px solid var(--light);
        }
        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            -webkit-text-fill-color: var(--primary);
            font-size: 2rem;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--primary);
            cursor: pointer;
            padding: 8px;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 24px;
            list-style: none;
        }
        .nav-menu a {
            font-weight: 500;
            color: var(--dark);
            padding: 8px 12px;
            border-radius: 8px;
            transition: background 0.2s, color 0.2s;
        }
        .nav-menu a:hover {
            background: var(--light);
            color: var(--primary);
            text-decoration: none;
        }
        .nav-menu .active {
            color: var(--primary);
            font-weight: 600;
        }
        .breadcrumb {
            background: var(--light);
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
            font-size: 0.875rem;
        }
        .breadcrumb-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .separator {
            color: var(--gray);
        }
        .breadcrumb .current {
            color: var(--dark);
            font-weight: 500;
        }
        .main-wrapper {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 30px 20px;
            display: grid;
            grid-template-columns: 1fr 280px;
            gap: 40px;
        }
        .article-content {
            min-width: 0;
        }
        .sidebar {
            min-width: 0;
        }
        h1 {
            font-size: 2.5rem;
            line-height: 1.2;
            margin-bottom: 16px;
            color: var(--dark);
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary-dark), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin: 40px 0 16px;
            padding-bottom: 12px;
            border-bottom: 3px solid var(--light);
            color: var(--dark);
            position: relative;
        }
        h2::after {
            content: '';
            position: absolute;
            bottom: -3px;
            left: 0;
            width: 60px;
            height: 3px;
            background: var(--secondary);
            border-radius: 3px;
        }
        h3 {
            font-size: 1.4rem;
            font-weight: 600;
            margin: 28px 0 12px;
            color: var(--dark);
        }
        h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin: 20px 0 10px;
            color: var(--primary-dark);
        }
        p {
            margin-bottom: 16px;
            color: #374151;
        }
        .hero-image {
            width: 100%;
            border-radius: var(--radius);
            margin: 20px 0 30px;
            box-shadow: var(--shadow-lg);
        }
        .hero-figure {
            margin: 24px 0 32px;
            text-align: center;
        }
        .hero-figure figcaption {
            font-size: 0.85rem;
            color: var(--gray);
            margin-top: 8px;
            font-style: italic;
        }
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin: 24px 0;
        }
        .card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .card i {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .card h4 {
            margin-bottom: 8px;
        }
        .callout {
            background: var(--light);
            border-left: 4px solid var(--primary);
            padding: 20px 24px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 24px 0;
        }
        .callout p {
            margin-bottom: 8px;
        }
        .callout strong {
            color: var(--primary-dark);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin: 24px 0;
        }
        .stat-item {
            text-align: center;
            padding: 20px;
            background: linear-gradient(135deg, var(--light), var(--white));
            border-radius: var(--radius);
            border: 1px solid var(--border);
        }
        .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
        }
        .stat-label {
            font-size: 0.85rem;
            color: var(--gray);
            margin-top: 4px;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            font-size: 0.9rem;
        }
        .data-table th,
        .data-table td {
            padding: 12px 16px;
            border: 1px solid var(--border);
            text-align: left;
        }
        .data-table th {
            background: var(--light);
            font-weight: 600;
        }
        .data-table tr:nth-child(even) {
            background: #faf9ff;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 12px;
            overflow: hidden;
        }
        .faq-question {
            padding: 16px 20px;
            background: var(--light);
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .faq-answer {
            padding: 16px 20px;
            border-top: 1px solid var(--border);
        }
        .form-section {
            background: var(--light);
            border-radius: var(--radius);
            padding: 24px;
            margin: 30px 0;
            border: 1px solid var(--border);
        }
        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-top: 16px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        .form-group.full-width {
            grid-column: 1 / -1;
        }
        .form-group label {
            font-weight: 500;
            margin-bottom: 6px;
            font-size: 0.9rem;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            padding: 10px 14px;
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 0.95rem;
            font-family: inherit;
            transition: border-color 0.2s;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--primary);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            background: var(--primary);
            color: var(--white);
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 500;
            cursor: pointer;
            transition: background 0.2s, transform 0.2s;
        }
        .btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
        }
        .rating-stars {
            display: flex;
            gap: 4px;
            font-size: 1.5rem;
            color: var(--secondary);
            cursor: pointer;
        }
        .rating-stars i {
            transition: transform 0.2s;
        }
        .rating-stars i:hover {
            transform: scale(1.2);
        }
        .sidebar-widget {
            background: var(--white);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            margin-bottom: 24px;
        }
        .sidebar-widget h3 {
            font-size: 1.1rem;
            margin-bottom: 12px;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--light);
        }
        .sidebar-widget ul {
            list-style: none;
        }
        .sidebar-widget li {
            margin-bottom: 8px;
            padding-left: 20px;
            position: relative;
        }
        .sidebar-widget li::before {
            content: '→';
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: 600;
        }
        .sidebar-widget a {
            color: var(--dark);
        }
        .sidebar-widget a:hover {
            color: var(--primary);
            text-decoration: none;
        }
        .search-box {
            display: flex;
            gap: 8px;
        }
        .search-box input {
            flex: 1;
            padding: 10px 14px;
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 0.9rem;
        }
        .search-box button {
            background: var(--primary);
            color: var(--white);
            border: none;
            border-radius: 8px;
            padding: 10px 16px;
            cursor: pointer;
        }
        .site-footer {
            background: var(--dark);
            color: var(--white);
            margin-top: 60px;
            padding: 40px 0 20px;
        }
        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 30px;
        }
        .footer-about p {
            color: #9ca3af;
            font-size: 0.9rem;
            margin-top: 12px;
        }
        .footer-links h4 {
            color: var(--white);
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #9ca3af;
            font-size: 0.9rem;
            display: block;
            margin-bottom: 8px;
        }
        .footer-links a:hover {
            color: var(--secondary);
            text-decoration: none;
        }
        .footer-bottom {
            border-top: 1px solid #374151;
            margin-top: 30px;
            padding-top: 20px;
            text-align: center;
            color: #9ca3af;
            font-size: 0.85rem;
        }
        .footer-bottom p {
            color: #9ca3af;
            font-size: 0.85rem;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 8px;
            padding: 16px;
            margin: 16px 0;
            font-size: 0.9rem;
            color: #9ca3af;
        }
        friend-link a {
            color: var(--secondary);
            margin: 0 4px;
        }
        @media (max-width: 1024px) {
            .main-wrapper {
                grid-template-columns: 1fr;
            }
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                height: 60px;
            }
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                background: var(--white);
                flex-direction: column;
                padding: 20px;
                box-shadow: var(--shadow-lg);
                border-bottom: 2px solid var(--light);
                gap: 8px;
            }
            .nav-menu.open {
                display: flex;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr;
            }
        }