* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #f8f9fa;
            background-image: linear-gradient(to bottom right, #f0f4ff, #ffffff);
        }
        a { color: #2563eb; text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #1d4ed8; text-decoration: underline; }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            background: linear-gradient(90deg, #fbbf24, #f59e0b);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 2px 4px rgba(0,0,0,0.2);
        }
        .my-logo a { color: inherit; text-decoration: none; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #dbeafe;
            font-weight: 600;
            padding: 0.5rem 0.75rem;
            border-radius: 0.375rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .main-nav a:hover {
            background-color: rgba(255, 255, 255, 0.15);
            color: white;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: #e2e8f0;
            padding: 0.75rem 20px;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '>';
            margin: 0 0.5rem;
            color: #64748b;
        }
        .search-module {
            background: white;
            padding: 2rem;
            border-radius: 1rem;
            box-shadow: 0 6px 15px rgba(0, 0, 0, 0.08);
            margin: 2rem auto;
            max-width: 800px;
        }
        .search-form {
            display: flex;
            gap: 0.5rem;
        }
        .search-form input {
            flex: 1;
            padding: 1rem;
            border: 2px solid #cbd5e1;
            border-radius: 0.5rem;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        .search-form input:focus {
            outline: none;
            border-color: #2563eb;
        }
        .search-form button {
            background: linear-gradient(135deg, #10b981, #059669);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 0.5rem;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.3s, box-shadow 0.3s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-form button:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(16, 185, 129, 0.3);
        }
        .content-area {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin: 2rem 0;
        }
        @media (max-width: 992px) {
            .content-area { grid-template-columns: 1fr; }
        }
        .main-content { background: white; padding: 2.5rem; border-radius: 1rem; box-shadow: 0 8px 25px rgba(0, 0, 0, 0.05); }
        .sidebar { background: white; padding: 1.5rem; border-radius: 1rem; box-shadow: 0 6px 18px rgba(0, 0, 0, 0.05); align-self: start; }
        h1, h2, h3, h4 {
            color: #1e293b;
            line-height: 1.3;
            margin-top: 2rem;
            margin-bottom: 1rem;
            font-weight: 700;
        }
        h1 { font-size: 2.8rem; color: #1e3a8a; border-bottom: 4px solid #fbbf24; padding-bottom: 0.5rem; }
        h2 { font-size: 2.2rem; color: #2563eb; padding-left: 1rem; border-left: 6px solid #10b981; }
        h3 { font-size: 1.8rem; color: #059669; }
        h4 { font-size: 1.4rem; color: #7c3aed; }
        p { margin-bottom: 1.5rem; font-size: 1.125rem; }
        .lead { font-size: 1.3rem; color: #475569; font-weight: 500; }
        .highlight { background-color: #fef3c7; padding: 1.5rem; border-radius: 0.75rem; border-left: 6px solid #f59e0b; margin: 2rem 0; }
        .tip { background-color: #dbeafe; padding: 1rem; border-radius: 0.5rem; margin: 1.5rem 0; display: flex; align-items: flex-start; gap: 1rem; }
        .tip i { color: #2563eb; font-size: 1.5rem; }
        .article-img {
            margin: 2rem auto;
            border-radius: 1rem;
            overflow: hidden;
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
            max-width: 800px;
        }
        .article-img figcaption {
            text-align: center;
            font-style: italic;
            color: #64748b;
            padding: 0.75rem;
            background-color: #f8fafc;
        }
        .link-list {
            background: #f1f5f9;
            padding: 1.5rem;
            border-radius: 0.75rem;
            margin: 2rem 0;
        }
        .link-list h3 { margin-top: 0; }
        .link-list ul { list-style: none; }
        .link-list li { margin-bottom: 0.75rem; padding-left: 1.5rem; position: relative; }
        .link-list li::before {
            content: '→';
            position: absolute;
            left: 0;
            color: #2563eb;
            font-weight: bold;
        }
        .rating-module, .comment-module {
            background: white;
            padding: 2rem;
            border-radius: 1rem;
            box-shadow: 0 6px 15px rgba(0, 0, 0, 0.08);
            margin: 3rem 0;
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .star-rating {
            display: flex;
            gap: 0.5rem;
            font-size: 2rem;
            color: #cbd5e1;
            cursor: pointer;
        }
        .star-rating .star:hover,
        .star-rating .star.active { color: #fbbf24; }
        .form-group { display: flex; flex-direction: column; gap: 0.5rem; }
        .form-group label { font-weight: 600; color: #475569; }
        .form-group input,
        .form-group textarea,
        .form-group select {
            padding: 1rem;
            border: 2px solid #cbd5e1;
            border-radius: 0.5rem;
            font-size: 1rem;
            font-family: inherit;
            transition: border-color 0.3s;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: #2563eb;
        }
        .submit-btn {
            align-self: flex-start;
            background: linear-gradient(135deg, #8b5cf6, #7c3aed);
            color: white;
            border: none;
            padding: 1rem 2.5rem;
            border-radius: 0.5rem;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .submit-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 16px rgba(139, 92, 246, 0.3);
        }
        .sidebar-widget { margin-bottom: 2.5rem; }
        .sidebar-widget h3 {
            font-size: 1.4rem;
            color: #1e293b;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid #fbbf24;
            margin-bottom: 1rem;
        }
        .update-time {
            background: #dcfce7;
            padding: 1rem;
            border-radius: 0.5rem;
            text-align: center;
            font-weight: 600;
            color: #065f46;
        }
        .site-footer {
            background: linear-gradient(135deg, #1e293b, #0f172a);
            color: #cbd5e1;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section { flex: 1; min-width: 250px; }
        .footer-section h4 {
            color: #fbbf24;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .footer-section ul { list-style: none; }
        .footer-section li { margin-bottom: 0.75rem; }
        .footer-section a { color: #94a3b8; }
        .footer-section a:hover { color: #fbbf24; }
        friend-link {
            display: block;
            background: rgba(251, 191, 36, 0.1);
            padding: 1rem;
            border-radius: 0.5rem;
            margin: 1rem 0;
            border-left: 4px solid #fbbf24;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #334155;
            color: #94a3b8;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #1e3a8a;
                padding: 1rem;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
            }
            .main-nav.active ul { display: flex; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            .header-inner, .footer-inner { flex-direction: column; }
            .search-form { flex-direction: column; }
            .search-form button { justify-content: center; }
        }