* { 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: #2c3e50;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 20px;
        }
        h1 { font-size: 2.8rem; color: #1a5276; margin: 1.5rem 0; border-bottom: 3px solid #3498db; padding-bottom: 0.5rem; }
        h2 { font-size: 2.2rem; color: #2874a6; margin: 1.8rem 0 1rem; }
        h3 { font-size: 1.8rem; color: #2e86c1; margin: 1.5rem 0 0.8rem; }
        h4 { font-size: 1.4rem; color: #5dade2; margin: 1.2rem 0 0.6rem; }
        p { margin-bottom: 1.2rem; text-align: justify; }
        a { color: #2980b9; text-decoration: none; transition: color 0.3s, background-color 0.3s; }
        a:hover { color: #1c5985; text-decoration: underline; }
        strong { color: #154360; }
        em { color: #7d3c98; }
        .container { display: grid; grid-template-columns: 1fr; gap: 2rem; }
        header { background: linear-gradient(to right, #1a5276, #2e86c1); color: white; padding: 1.5rem; border-radius: 0 0 12px 12px; margin-bottom: 2rem; }
        .header-top { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; }
        .my-logo { font-size: 2.5rem; font-weight: 800; letter-spacing: 1px; color: #fff; }
        .my-logo span { color: #f1c40f; }
        nav ul { display: flex; list-style: none; gap: 2rem; flex-wrap: wrap; }
        nav a { color: white; padding: 0.5rem 1rem; border-radius: 6px; }
        nav a:hover { background-color: rgba(255, 255, 255, 0.15); text-decoration: none; }
        .hamburger { display: none; font-size: 1.8rem; cursor: pointer; }
        .breadcrumb { background: #eaf2f8; padding: 1rem; border-radius: 8px; margin: 1rem 0; }
        .breadcrumb a { color: #2e86c1; }
        .breadcrumb a::after { content: " › "; margin: 0 8px; }
        .breadcrumb a:last-child::after { content: ""; }
        .search-box { background: white; padding: 1.5rem; border-radius: 10px; box-shadow: 0 5px 15px rgba(0,0,0,0.05); margin: 2rem 0; }
        .search-form { display: flex; gap: 10px; }
        .search-form input { flex-grow: 1; padding: 12px; border: 2px solid #d6eaf8; border-radius: 8px; font-size: 1rem; }
        .search-form button { background: #3498db; color: white; border: none; padding: 0 1.8rem; border-radius: 8px; cursor: pointer; transition: background 0.3s; }
        .search-form button:hover { background: #1c5985; }
        main { display: grid; grid-template-columns: 1fr 300px; gap: 2.5rem; }
        .content { background: white; padding: 2.5rem; border-radius: 12px; box-shadow: 0 8px 25px rgba(0,0,0,0.06); }
        .featured-img { width: 100%; border-radius: 12px; margin: 1.5rem 0; border: 3px solid #d6eaf8; }
        aside { background: #eaf2f8; padding: 1.8rem; border-radius: 12px; height: fit-content; }
        .widget { margin-bottom: 2rem; }
        .widget h3 { color: #1a5276; border-bottom: 2px solid #aed6f1; padding-bottom: 0.5rem; }
        .comment-section, .rating-section { background: #f8f9fa; padding: 1.8rem; border-radius: 10px; margin: 2rem 0; border: 1px solid #d6eaf8; }
        .comment-form, .rating-form { display: grid; gap: 1rem; margin-top: 1rem; }
        textarea, select, .rating-form input { width: 100%; padding: 12px; border: 2px solid #d6eaf8; border-radius: 8px; font-family: inherit; }
        .rating-stars { color: #f1c40f; font-size: 1.5rem; }
        .submit-btn { background: #2ecc71; color: white; border: none; padding: 12px 24px; border-radius: 8px; cursor: pointer; font-weight: bold; transition: background 0.3s; }
        .submit-btn:hover { background: #239b56; }
        footer { background: #1a5276; color: white; padding: 2.5rem; border-radius: 12px 12px 0 0; margin-top: 3rem; }
        .footer-content { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 2rem; }
        friend-link { display: block; margin: 0.5rem 0; }
        friend-link a { color: #aed6f1; }
        .copyright { text-align: center; margin-top: 2rem; padding-top: 1.5rem; border-top: 1px solid #2e86c1; color: #d6eaf8; font-size: 0.9rem; }
        @media (max-width: 992px) {
            main { grid-template-columns: 1fr; }
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
        }
        @media (max-width: 768px) {
            .header-top { flex-direction: column; gap: 1rem; }
            nav ul { display: none; flex-direction: column; width: 100%; background: #154360; border-radius: 8px; padding: 1rem; }
            nav ul.show { display: flex; }
            .hamburger { display: block; }
            .search-form { flex-direction: column; }
        }
        .highlight-box { background: linear-gradient(to right, #e3f2fd, #f3e5f5); border-left: 5px solid #9b59b6; padding: 1.5rem; margin: 1.5rem 0; border-radius: 0 8px 8px 0; }
        .tip { background: #fffde7; border: 1px dashed #f1c40f; padding: 1rem; border-radius: 8px; margin: 1rem 0; }
        .tag { display: inline-block; background: #d6eaf8; color: #1a5276; padding: 0.3rem 0.8rem; border-radius: 20px; font-size: 0.85rem; margin-right: 0.5rem; margin-bottom: 0.5rem; }
        .update-time { background: #e8f6f3; padding: 0.5rem 1rem; border-radius: 6px; font-size: 0.9rem; color: #0e6251; display: inline-block; margin-bottom: 1.5rem; }