* { 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: linear-gradient(135deg, #f9f9f9 0%, #f0f4f8 100%);
            min-height: 100vh;
        }
        img { max-width: 100%; height: auto; display: block; }
        h1, h2, h3, h4 { font-weight: 700; color: #2c3e50; margin-bottom: 1rem; line-height: 1.3; }
        h1 { font-size: 2.8rem; text-align: center; margin-top: 2rem; color: #1a5276; border-bottom: 3px solid #e74c3c; padding-bottom: 1rem; }
        h2 { font-size: 2.2rem; color: #2874a6; border-left: 5px solid #f39c12; padding-left: 15px; margin-top: 3rem; }
        h3 { font-size: 1.8rem; color: #3498db; margin-top: 2.5rem; }
        h4 { font-size: 1.5rem; color: #5dade2; margin-top: 2rem; }
        p { margin-bottom: 1.5rem; font-size: 1.1rem; text-align: justify; }
        a { color: #2980b9; text-decoration: none; transition: color 0.3s, background 0.3s; }
        a:hover { color: #e74c3c; }
        strong { color: #c0392b; font-weight: 700; }
        em { font-style: italic; color: #7d6608; }
        .lead { font-size: 1.3rem; color: #555; font-weight: 500; background: #eaf2f8; padding: 1.5rem; border-radius: 10px; margin: 2rem 0; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin-top: 2rem;
        }
        @media (max-width: 992px) {
            .main-grid { grid-template-columns: 1fr; }
        }
        .site-header {
            background: linear-gradient(90deg, #1b4f72 0%, #2c3e50 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-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-family: 'Trebuchet MS', sans-serif;
            font-size: 2rem;
            font-weight: 900;
            color: #f1c40f;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
            letter-spacing: 1px;
        }
        .my-logo a { color: inherit; }
        .my-logo span { color: #3498db; }
        .nav-toggle { display: none; }
        .nav-toggle-label {
            display: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 1.5rem;
        }
        .main-nav a {
            color: #ecf0f1;
            padding: 0.5rem 1rem;
            border-radius: 5px;
            font-weight: 600;
        }
        .main-nav a:hover,
        .main-nav a:focus {
            background: #3498db;
            color: white;
        }
        @media (max-width: 768px) {
            .nav-toggle-label { display: block; }
            .main-nav {
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #2c3e50;
                clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
                transition: clip-path 0.4s ease;
            }
            .nav-toggle:checked ~ .main-nav {
                clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
            }
            .main-nav ul {
                flex-direction: column;
                padding: 1rem;
                gap: 0;
            }
            .main-nav li { border-bottom: 1px solid #34495e; }
            .main-nav a {
                display: block;
                padding: 1rem;
            }
        }
        .breadcrumb {
            padding: 1rem 0;
            background: #edf2f7;
            border-radius: 5px;
            margin: 1rem 0;
        }
        .breadcrumb ul {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "›";
            margin: 0 10px;
            color: #7f8c8d;
        }
        .breadcrumb a { color: #555; }
        .search-module {
            background: white;
            padding: 2rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            margin: 2rem 0;
            text-align: center;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-input {
            flex-grow: 1;
            padding: 15px;
            border: 2px solid #3498db;
            border-radius: 30px 0 0 30px;
            font-size: 1rem;
        }
        .search-btn {
            background: linear-gradient(to right, #3498db, #2980b9);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 30px 30px 0;
            cursor: pointer;
            font-size: 1.1rem;
            transition: background 0.3s;
        }
        .search-btn:hover { background: linear-gradient(to right, #2980b9, #1c6ea4); }
        .content-card {
            background: white;
            border-radius: 12px;
            padding: 2rem;
            margin-bottom: 2.5rem;
            box-shadow: 0 8px 25px rgba(0,0,0,0.08);
            border-top: 5px solid #f39c12;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .content-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.12);
        }
        .highlight-box {
            background: linear-gradient(135deg, #fff9e6 0%, #ffeaa7 100%);
            border-left: 6px solid #f1c40f;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 10px 10px 0;
        }
        .figure-wrapper {
            margin: 2.5rem auto;
            text-align: center;
            max-width: 800px;
        }
        .figure-wrapper img {
            border-radius: 12px;
            box-shadow: 0 10px 20px rgba(0,0,0,0.15);
            border: 1px solid #ddd;
        }
        .figcaption {
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .sidebar-title {
            color: #2c3e50;
            border-bottom: 2px solid #3498db;
            padding-bottom: 0.5rem;
            margin-bottom: 1rem;
            font-size: 1.4rem;
        }
        .link-list {
            list-style: none;
        }
        .link-list li {
            margin-bottom: 0.8rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px dashed #eee;
        }
        .link-list a {
            display: block;
            padding: 0.5rem;
            border-radius: 5px;
        }
        .link-list a:hover {
            background: #f8f9fa;
            padding-left: 15px;
        }
        .interaction-module {
            background: white;
            padding: 2.5rem;
            border-radius: 15px;
            margin: 3rem 0;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }
        .rating-container {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 2rem;
        }
        .stars {
            display: flex;
            gap: 5px;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover,
        .star.active { color: #f1c40f; }
        .comment-form,
        .score-form {
            display: grid;
            gap: 1.2rem;
            margin-top: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        .form-control {
            width: 100%;
            padding: 12px;
            border: 2px solid #bdc3c7;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-control:focus {
            border-color: #3498db;
            outline: none;
        }
        .submit-btn {
            background: linear-gradient(to right, #2ecc71, #27ae60);
            color: white;
            border: none;
            padding: 15px 30px;
            border-radius: 30px;
            font-size: 1.1rem;
            font-weight: 700;
            cursor: pointer;
            transition: background 0.3s;
            justify-self: start;
        }
        .submit-btn:hover { background: linear-gradient(to right, #27ae60, #219653); }
        .site-footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-logo { font-size: 1.8rem; color: #f1c40f; margin-bottom: 1rem; }
        .footer-nav ul { list-style: none; }
        .footer-nav a { color: #bdc3c7; line-height: 2; }
        .footer-nav a:hover { color: #f1c40f; }
        friend-link {
            display: block;
            padding: 0.8rem;
            background: #34495e;
            margin-bottom: 0.5rem;
            border-radius: 5px;
            transition: background 0.3s;
        }
        friend-link:hover { background: #3d566e; }
        friend-link a { color: #ecf0f1; display: block; }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #4a6278;
            color: #95a5a6;
            font-size: 0.95rem;
        }
        .text-center { text-align: center; }
        .mt-2 { margin-top: 2rem; }
        .mb-2 { margin-bottom: 2rem; }
        .update-time {
            background: #e8f6f3;
            padding: 1rem;
            border-radius: 8px;
            font-size: 0.95rem;
            color: #27ae60;
            margin: 1rem 0;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .emoji { font-size: 1.2em; margin-right: 5px; }