*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.75;
            color: #1a1a2e;
            background: #f8f9fc;
            padding: 0;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }
        :root {
            --primary: #2d3436;
            --accent: #6c5ce7;
            --accent-light: #a29bfe;
            --accent-dark: #4834d4;
            --bg: #ffffff;
            --bg-alt: #f0f2f8;
            --text: #1a1a2e;
            --text-light: #555;
            --text-muted: #777;
            --border: #e0e0e8;
            --shadow: 0 4px 20px rgba(0,0,0,0.06);
            --radius: 12px;
            --max-width: 1200px;
            --header-height: 72px;
        }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--primary); }
        h1 { font-size: 2.6rem; margin-bottom: 1rem; letter-spacing: -0.02em; }
        h2 { font-size: 2rem; margin-top: 3.2rem; margin-bottom: 1rem; border-bottom: 3px solid var(--accent-light); padding-bottom: 0.4rem; }
        h3 { font-size: 1.5rem; margin-top: 2.2rem; margin-bottom: 0.75rem; color: #2d3436; }
        h4 { font-size: 1.2rem; margin-top: 1.6rem; margin-bottom: 0.5rem; color: #3d3d5c; }
        p { margin-bottom: 1.2rem; color: var(--text); }
        a { color: var(--accent); text-decoration: none; transition: color 0.2s; }
        a:hover { color: var(--accent-dark); text-decoration: underline; }
        strong { font-weight: 700; color: #1a1a2e; }
        em { font-style: italic; }
        blockquote {
            border-left: 4px solid var(--accent);
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            background: var(--bg-alt);
            border-radius: 0 var(--radius) var(--radius) 0;
            font-style: italic;
            color: var(--text-light);
        }
        img { max-width: 100%; height: auto; border-radius: var(--radius); display: block; }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 1.5rem; }
        .content-wrapper { max-width: 860px; margin: 0 auto; }
        .site-header {
            background: var(--bg);
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-height);
            display: flex;
            align-items: center;
            border-bottom: 1px solid var(--border);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .my-logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.03em;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo:hover { text-decoration: none; color: var(--accent); }
        .my-logo i { color: var(--accent); font-size: 1.8rem; }
        .my-logo span { background: linear-gradient(135deg, var(--accent), var(--accent-dark)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .main-nav { display: flex; align-items: center; gap: 1.8rem; }
        .main-nav a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text);
            padding: 0.3rem 0;
            position: relative;
            transition: color 0.2s;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: width 0.3s;
        }
        .main-nav a:hover { color: var(--accent); text-decoration: none; }
        .main-nav a:hover::after { width: 100%; }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 4px;
            background: none;
            border: none;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
            transition: all 0.3s;
        }
        .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 6px); }
        .hamburger.active span:nth-child(2) { opacity: 0; }
        .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -6px); }
        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: var(--bg);
            box-shadow: 0 8px 30px rgba(0,0,0,0.1);
            padding: 1.5rem 2rem;
            z-index: 999;
            border-bottom: 2px solid var(--accent-light);
            max-height: calc(100vh - var(--header-height));
            overflow-y: auto;
        }
        .mobile-nav.open { display: block; }
        .mobile-nav a {
            display: block;
            padding: 0.8rem 0;
            font-size: 1.1rem;
            font-weight: 500;
            border-bottom: 1px solid var(--border);
        }
        .mobile-nav a:last-child { border-bottom: none; }
        .breadcrumbs {
            padding: 1rem 0 0.5rem;
            font-size: 0.9rem;
            color: var(--text-muted);
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
        }
        .breadcrumbs a { color: var(--accent); }
        .breadcrumbs a:hover { text-decoration: underline; }
        .breadcrumbs span { color: var(--text-light); }
        .hero {
            padding: 2.5rem 0 1.5rem;
            background: linear-gradient(135deg, #f0f2f8 0%, #e8e6f8 100%);
            border-radius: 0 0 var(--radius) var(--radius);
        }
        .hero h1 { font-size: 2.8rem; margin-bottom: 0.5rem; }
        .hero .subtitle { font-size: 1.2rem; color: var(--text-light); max-width: 700px; }
        .hero-meta { display: flex; flex-wrap: wrap; gap: 1.5rem; margin-top: 1rem; font-size: 0.95rem; color: var(--text-muted); }
        .hero-meta i { margin-right: 0.3rem; color: var(--accent); }
        .featured-image {
            margin: 2rem 0;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .featured-image img { width: 100%; height: auto; display: block; }
        .featured-image figcaption { padding: 0.75rem 1rem; background: var(--bg-alt); font-size: 0.9rem; color: var(--text-muted); text-align: center; }
        section { margin-bottom: 1.5rem; }
        .section-content { margin-top: 0.5rem; }
        .info-box {
            background: var(--bg-alt);
            border-radius: var(--radius);
            padding: 1.5rem 2rem;
            margin: 1.5rem 0;
            border-left: 5px solid var(--accent);
        }
        .info-box h4 { margin-top: 0; color: var(--accent-dark); }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 1.2rem;
            margin: 1.8rem 0;
        }
        .stat-card {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 1.5rem 1rem;
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .stat-card:hover { transform: translateY(-4px); box-shadow: 0 8px 30px rgba(0,0,0,0.08); }
        .stat-card .stat-number { font-size: 2rem; font-weight: 800; color: var(--accent); }
        .stat-card .stat-label { font-size: 0.95rem; color: var(--text-light); margin-top: 0.3rem; }
        .link-list { list-style: none; padding: 0; margin: 1rem 0; }
        .link-list li { padding: 0.4rem 0; border-bottom: 1px dashed var(--border); }
        .link-list li:last-child { border-bottom: none; }
        .link-list a { font-weight: 500; }
        .link-list a i { margin-right: 0.4rem; color: var(--accent-light); }
        .form-card {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 2rem;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            margin: 2rem 0;
        }
        .form-card h3 { margin-top: 0; }
        .form-group { margin-bottom: 1.2rem; }
        .form-group label { display: block; font-weight: 600; margin-bottom: 0.4rem; color: var(--primary); }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.75rem 1rem;
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 1rem;
            font-family: inherit;
            transition: border-color 0.2s, box-shadow 0.2s;
            background: #fafafa;
        }
        .form-group input:focus,
        .form-group textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(108,92,231,0.15); background: #fff; }
        .form-group textarea { min-height: 100px; resize: vertical; }
        .btn {
            display: inline-block;
            padding: 0.75rem 2rem;
            background: var(--accent);
            color: #fff;
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            font-family: inherit;
        }
        .btn:hover { background: var(--accent-dark); transform: translateY(-1px); color: #fff; text-decoration: none; }
        .btn:active { transform: translateY(0); }
        .btn i { margin-right: 0.5rem; }
        .star-rating { display: flex; gap: 0.3rem; font-size: 1.8rem; cursor: pointer; direction: rtl; }
        .star-rating input { display: none; }
        .star-rating label { color: #ddd; transition: color 0.2s; cursor: pointer; }
        .star-rating label:hover,
        .star-rating label:hover ~ label,
        .star-rating input:checked ~ label { color: #f1c40f; }
        .comment-item {
            padding: 1.2rem 0;
            border-bottom: 1px solid var(--border);
        }
        .comment-item:last-child { border-bottom: none; }
        .comment-author { font-weight: 700; color: var(--primary); }
        .comment-date { font-size: 0.85rem; color: var(--text-muted); margin-left: 0.8rem; }
        .comment-body { margin-top: 0.4rem; color: var(--text); }
        .site-footer {
            background: var(--primary);
            color: #ddd;
            padding: 3rem 0 2rem;
            margin-top: 4rem;
            border-top: 4px solid var(--accent);
        }
        .site-footer a { color: var(--accent-light); }
        .site-footer a:hover { color: #fff; text-decoration: underline; }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-grid h4 { color: #fff; font-size: 1.1rem; margin-top: 0; margin-bottom: 0.8rem; border-bottom: 1px solid rgba(255,255,255,0.15); padding-bottom: 0.5rem; }
        .footer-grid ul { list-style: none; padding: 0; }
        .footer-grid li { padding: 0.3rem 0; }
        .footer-grid a { font-size: 0.95rem; }
        friend-link { display: block; margin-top: 0.5rem; }
        friend-link a { display: inline-block; margin-right: 1.2rem; margin-bottom: 0.4rem; }
        .copyright { text-align: center; padding-top: 1.5rem; border-top: 1px solid rgba(255,255,255,0.1); font-size: 0.9rem; color: #aaa; }
        @media (max-width: 768px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            h3 { font-size: 1.3rem; }
            .hero h1 { font-size: 2rem; }
            .main-nav { display: none; }
            .hamburger { display: flex; }
            .header-inner { padding: 0 1rem; }
            .container { padding: 0 1rem; }
            .form-card { padding: 1.2rem; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr; }
            .breadcrumbs { font-size: 0.8rem; }
            .hero-meta { flex-direction: column; gap: 0.5rem; }
        }
        @media (max-width: 480px) {
            h1 { font-size: 1.7rem; }
            h2 { font-size: 1.4rem; }
            h3 { font-size: 1.15rem; }
            .stats-grid { grid-template-columns: 1fr; }
            .hero h1 { font-size: 1.7rem; }
            .my-logo { font-size: 1.2rem; }
            .my-logo i { font-size: 1.4rem; }
        }
        .scroll-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            background: var(--accent);
            color: #fff;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            box-shadow: 0 4px 16px rgba(108,92,231,0.3);
            cursor: pointer;
            border: none;
            z-index: 99;
            transition: background 0.2s, transform 0.2s;
            opacity: 0;
            pointer-events: none;
        }
        .scroll-top.visible { opacity: 1; pointer-events: auto; }
        .scroll-top:hover { background: var(--accent-dark); transform: translateY(-3px); }
        .text-center { text-align: center; }
        .mt-1 { margin-top: 1rem; }
        .mt-2 { margin-top: 2rem; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .flex { display: flex; flex-wrap: wrap; gap: 1rem; }
        .gap-1 { gap: 1rem; }
        .align-center { align-items: center; }
        .schema-hidden { display: none; }