*,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #0f1923;
            --secondary: #e94560;
            --accent: #ffa500;
            --light-bg: #f5f7fa;
            --card-bg: #ffffff;
            --text: #2c3e50;
            --text-light: #6c7a89;
            --border: #e1e8ed;
            --radius: 12px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            --transition: 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.75;
            color: var(--text);
            background: var(--light-bg);
            font-size: 16px;
            overflow-x: hidden;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0b1622 0%, #162b3c 100%);
            position: sticky;
            top: 0;
            z-index: 999;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 14px 20px;
            max-width: 1300px;
            margin: 0 auto;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 900;
            color: #fff;
            text-decoration: none;
            letter-spacing: -0.5px;
            background: linear-gradient(90deg, var(--secondary) 0%, var(--accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .my-logo i {
            background: var(--secondary);
            -webkit-background-clip: unset;
            -webkit-text-fill-color: #fff;
            font-size: 1.4rem;
            padding: 8px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--secondary), #ff6b6b);
        }
        .nav-menu {
            display: flex;
            list-style: none;
            gap: 4px;
        }
        .nav-menu li a {
            display: block;
            color: #cbd5e1;
            text-decoration: none;
            padding: 8px 14px;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .nav-menu li a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.12);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 0;
            color: #fff;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 4px;
        }
        .breadcrumb-wrap {
            background: #fff;
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 12px 20px;
            max-width: 1300px;
            margin: 0 auto;
            font-size: 0.85rem;
        }
        .breadcrumb li {
            color: var(--text-light);
        }
        .breadcrumb li+li::before {
            content: "→";
            margin: 0 8px;
            color: #aaa;
        }
        .breadcrumb li a {
            color: var(--secondary);
            text-decoration: none;
        }
        .hero {
            background: linear-gradient(135deg, #0f1923, #1a2a3a);
            color: #fff;
            padding: 60px 0 50px;
            position: relative;
            overflow: hidden;
        }
        .hero::after {
            content: "";
            position: absolute;
            right: -50px;
            top: -50px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(233, 69, 96, 0.3), transparent 70%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }
        .hero h1 {
            font-size: clamp(2rem, 5vw, 3rem);
            line-height: 1.2;
            margin-bottom: 16px;
            font-weight: 900;
        }
        .hero p.lead {
            font-size: 1.15rem;
            color: #b0c4de;
            margin-bottom: 24px;
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-top: 24px;
        }
        .hero-stat {
            background: rgba(255, 255, 255, 0.08);
            padding: 14px 24px;
            border-radius: 12px;
            text-align: center;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .hero-stat strong {
            display: block;
            font-size: 1.5rem;
            color: var(--accent);
        }
        .hero-stat span {
            font-size: 0.8rem;
            color: #94a3b8;
        }
        .main-wrapper {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            max-width: 1300px;
            margin: 40px auto;
            padding: 0 20px;
            align-items: start;
        }
        .main-content {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 40px;
            box-shadow: var(--shadow);
        }
        .sidebar {
            position: sticky;
            top: 80px;
        }
        .sidebar-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow);
            margin-bottom: 24px;
        }
        .sidebar-card h3 {
            font-size: 1rem;
            margin-bottom: 14px;
            color: var(--primary);
            border-left: 4px solid var(--secondary);
            padding-left: 12px;
        }
        .sidebar-card ul {
            list-style: none;
        }
        .sidebar-card ul li {
            margin-bottom: 10px;
        }
        .sidebar-card ul a {
            color: var(--text);
            text-decoration: none;
            font-size: 0.9rem;
            transition: var(--transition);
            display: block;
            padding: 6px 10px;
            border-radius: 6px;
        }
        .sidebar-card ul a:hover {
            background: var(--light-bg);
            color: var(--secondary);
            padding-left: 14px;
        }
        h1,
        h2,
        h3,
        h4 {
            color: var(--primary);
            line-height: 1.3;
        }
        h2 {
            font-size: 1.8rem;
            margin: 48px 0 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--border);
            position: relative;
        }
        h2::after {
            content: "";
            display: block;
            width: 60px;
            height: 3px;
            background: var(--secondary);
            margin-top: 8px;
            border-radius: 4px;
        }
        h3 {
            font-size: 1.3rem;
            margin: 32px 0 12px;
        }
        h4 {
            font-size: 1.05rem;
            margin: 24px 0 10px;
            color: var(--secondary);
        }
        p {
            margin-bottom: 16px;
        }
        .highlight-box {
            background: linear-gradient(135deg, #fdf0f3, #fff7ed);
            border-left: 4px solid var(--secondary);
            padding: 18px 20px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
        }
        .info-box {
            background: #f0f7ff;
            border-left: 4px solid #3b82f6;
            padding: 16px 18px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 16px;
            margin: 24px 0;
        }
        .stat-item {
            background: var(--light-bg);
            padding: 20px;
            border-radius: 10px;
            text-align: center;
        }
        .stat-item i {
            font-size: 2rem;
            color: var(--secondary);
            margin-bottom: 8px;
        }
        .stat-item strong {
            display: block;
            font-size: 1.6rem;
            color: var(--primary);
        }
        .stat-item span {
            font-size: 0.85rem;
            color: var(--text-light);
        }
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 0.9rem;
            border-radius: 8px;
            overflow: hidden;
        }
        table th,
        table td {
            border: 1px solid var(--border);
            padding: 12px 16px;
            text-align: left;
        }
        table th {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        table tr:nth-child(even) {
            background: #f8fafc;
        }
        table tr:hover {
            background: #f1f5f9;
        }
        .content-image {
            margin: 32px 0;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .content-image img {
            width: 100%;
            height: auto;
            display: block;
        }
        .content-image figcaption {
            background: var(--primary);
            color: #fff;
            font-size: 0.85rem;
            text-align: center;
            padding: 8px;
        }
        .search-form {
            display: flex;
            margin: 24px 0;
            gap: 8px;
        }
        .search-form input {
            flex: 1;
            padding: 12px 16px;
            border: 2px solid var(--border);
            border-radius: 8px;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        .search-form input:focus {
            outline: none;
            border-color: var(--secondary);
        }
        .search-form button {
            background: var(--secondary);
            color: #fff;
            border: none;
            padding: 12px 20px;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: #c0392b;
        }
        .comment-section,
        .rating-section {
            margin-top: 48px;
            border-top: 1px solid var(--border);
            padding-top: 32px;
        }
        .comment-list {
            list-style: none;
            margin: 20px 0;
        }
        .comment-item {
            background: var(--light-bg);
            border-radius: 10px;
            padding: 16px;
            margin-bottom: 12px;
        }
        .comment-item strong {
            color: var(--primary);
        }
        .comment-item .meta {
            font-size: 0.8rem;
            color: var(--text-light);
        }
        .comment-form textarea {
            width: 100%;
            padding: 14px;
            border: 2px solid var(--border);
            border-radius: 8px;
            margin: 12px 0;
            font-family: inherit;
            resize: vertical;
            min-height: 100px;
        }
        .btn {
            display: inline-block;
            background: var(--secondary);
            color: #fff;
            padding: 12px 28px;
            border: none;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn:hover {
            background: #c0392b;
            transform: translateY(-2px);
        }
        .star-rating {
            display: flex;
            gap: 4px;
            font-size: 1.6rem;
            margin: 16px 0;
            color: var(--border);
        }
        .star-rating .fa-star {
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating .fa-star.active {
            color: var(--accent);
        }
        .site-footer {
            background: var(--primary);
            color: #94a3b8;
            padding: 48px 0 20px;
            margin-top: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .footer-grid h3 {
            color: #fff;
            margin-bottom: 16px;
            font-size: 1rem;
        }
        .footer-grid ul {
            list-style: none;
        }
        .footer-grid ul a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 0.9rem;
            display: block;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-grid ul a:hover {
            color: var(--accent);
        }
        friend-link {
            display: block;
            margin: 24px auto 0;
            max-width: 1300px;
            padding: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.85rem;
            color: #64748b;
        }
        friend-link a {
            color: #94a3b8;
            text-decoration: none;
            margin: 0 8px 0 4px;
        }
        friend-link a:hover {
            color: var(--accent);
        }
        .copyright {
            text-align: center;
            padding: 20px 0 0;
            font-size: 0.85rem;
            color: #64748b;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            margin-top: 20px;
        }
        @media (max-width: 1024px) {
            .main-wrapper {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
        }
        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                padding: 12px 0;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-toggle {
                display: block;
            }
            .main-content {
                padding: 24px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .hero {
                padding: 40px 0 30px;
                text-align: center;
            }
            .hero-stats {
                justify-content: center;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            .my-logo {
                font-size: 1.3rem;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .stat-grid {
                grid-template-columns: 1fr 1fr;
            }
            table {
                font-size: 0.8rem;
            }
            table th,
            table td {
                padding: 8px 10px;
            }
        }
        .toc {
            background: var(--light-bg);
            border-radius: 10px;
            padding: 20px 24px;
            margin: 24px 0;
            border: 1px solid var(--border);
        }
        .toc h4 {
            margin: 0 0 12px;
        }
        .toc ol {
            margin-left: 20px;
        }
        .toc a {
            color: var(--text);
            text-decoration: none;
            font-size: 0.9rem;
        }
        .toc a:hover {
            color: var(--secondary);
            text-decoration: underline;
        }
        blockquote {
            background: #f8fafc;
            border-left: 4px solid var(--accent);
            padding: 16px 20px;
            margin: 24px 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: var(--text-light);
        }
        .pro-tip {
            background: linear-gradient(135deg, #fff7ed, #fef9c3);
            border-radius: 12px;
            padding: 18px 20px;
            margin: 24px 0;
            border: 1px solid #fcd34d;
        }
        .pro-tip h4 {
            margin: 0 0 8px;
            color: #92400e;
        }