* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: #333;
            background-color: #f8f9fa;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        a { color: #2a5db0; text-decoration: none; transition: color 0.3s; }
        a:hover { color: #e63946; text-decoration: underline; }
        img { max-width: 100%; height: auto; display: block; }
        .site-header {
            background: linear-gradient(135deg, #1a237e, #283593);
            color: white;
            padding: 1.5rem 0;
            border-radius: 0 0 12px 12px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: #ffde03;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        .my-logo:hover { color: #fff; text-decoration: none; }
        .main-nav { display: flex; align-items: center; }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .nav-list a {
            color: #e8eaf6;
            font-weight: 600;
            padding: 0.5rem 0;
            border-bottom: 2px solid transparent;
        }
        .nav-list a:hover,
        .nav-list a.active { color: #ffde03; border-bottom-color: #ffde03; text-decoration: none; }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            color: #666;
        }
        .breadcrumb a { color: #555; }
        .breadcrumb span { color: #888; }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin: 2rem 0;
        }
        article { background: white; padding: 2.5rem; border-radius: 12px; box-shadow: 0 5px 15px rgba(0,0,0,0.05); }
        aside {
            background: white;
            padding: 1.5rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        h1 {
            font-size: 2.8rem;
            color: #1a237e;
            margin-bottom: 1.5rem;
            line-height: 1.3;
            border-left: 6px solid #e63946;
            padding-left: 1rem;
        }
        h2 {
            font-size: 2rem;
            color: #283593;
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e8eaf6;
        }
        h3 {
            font-size: 1.5rem;
            color: #3949ab;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.2rem;
            color: #5c6bc0;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 500;
            color: #444;
            background: #f1f8ff;
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 4px solid #2a5db0;
            margin-bottom: 2rem;
        }
        .highlight {
            background: linear-gradient(120deg, #ffde0377 0%, #ffde0377 100%);
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .stats-box {
            background: #e8f4fd;
            border: 2px dashed #2a5db0;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        blockquote {
            font-style: italic;
            color: #555;
            border-left: 4px solid #e63946;
            padding-left: 1.5rem;
            margin: 2rem 0;
        }
        .content-img {
            width: 80%;
            margin: 2rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
        }
        .img-caption {
            text-align: center;
            font-size: 0.9rem;
            color: #666;
            margin-top: 0.5rem;
        }
        .update-time {
            text-align: right;
            font-size: 0.9rem;
            color: #888;
            font-style: italic;
            margin-top: 3rem;
            padding-top: 1rem;
            border-top: 1px solid #eee;
        }
        .search-box, .comment-form, .rating-form {
            background: #f9f9f9;
            padding: 1.5rem;
            border-radius: 10px;
            margin-bottom: 2rem;
        }
        .form-group {
            margin-bottom: 1rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #444;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #ccc;
            border-radius: 6px;
            font-family: inherit;
            font-size: 1rem;
        }
        button, .btn {
            background: linear-gradient(to right, #2a5db0, #1a237e);
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            display: inline-block;
            text-align: center;
        }
        button:hover, .btn:hover {
            background: linear-gradient(to right, #e63946, #c1121f);
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0,0,0,0.2);
            text-decoration: none;
        }
        .star-rating {
            display: flex;
            gap: 0.5rem;
            margin: 0.5rem 0;
        }
        .star-rating input { display: none; }
        .star-rating label {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label { color: #ffde03; }
        .sidebar-widget {
            margin-bottom: 2rem;
        }
        .sidebar-widget h3 {
            font-size: 1.3rem;
            color: #1a237e;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid #eee;
        }
        .related-links {
            list-style: none;
        }
        .related-links li {
            margin-bottom: 0.8rem;
            padding-left: 1rem;
            border-left: 3px solid transparent;
            transition: all 0.3s;
        }
        .related-links li:hover {
            border-left-color: #2a5db0;
            padding-left: 1.5rem;
        }
        .site-footer {
            background: #1a237e;
            color: #e8eaf6;
            padding: 2.5rem 0;
            border-radius: 12px 12px 0 0;
            margin-top: 3rem;
        }
        .footer-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 2rem;
        }
        .footer-section { flex: 1; min-width: 250px; }
        .footer-section h3 {
            color: #ffde03;
            margin-bottom: 1.2rem;
            font-size: 1.3rem;
        }
        friend-link {
            display: inline-block;
            background: rgba(255,255,255,0.1);
            padding: 0.5rem 1rem;
            margin: 0.3rem;
            border-radius: 5px;
            transition: background 0.3s;
        }
        friend-link a { color: #e8eaf6; }
        friend-link:hover { background: rgba(255,255,255,0.2); }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            color: #b0b7d6;
        }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
            aside { position: static; }
        }
        @media (max-width: 768px) {
            .header-container { flex-direction: column; align-items: flex-start; }
            .main-nav { width: 100%; margin-top: 1rem; }
            .nav-list {
                flex-direction: column;
                width: 100%;
                display: none;
                gap: 0;
            }
            .nav-list.active { display: flex; }
            .nav-list li { width: 100%; border-bottom: 1px solid rgba(255,255,255,0.1); }
            .nav-list a { display: block; padding: 1rem; }
            .hamburger { display: block; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            .lead { font-size: 1.1rem; }
        }
        @media (max-width: 480px) {
            article, aside { padding: 1.5rem; }
            h1 { font-size: 1.8rem; }
            .footer-container { flex-direction: column; }
        }