* { 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, #f5f7fa 0%, #e4edf5 100%);
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 15px;
            box-shadow: 0 0 30px rgba(0, 0, 0, 0.05);
            min-height: 100vh;
        }
        a { color: #2a5db0; text-decoration: none; transition: color 0.3s, transform 0.2s; }
        a:hover { color: #e63946; transform: translateY(-1px); }
        img { max-width: 100%; height: auto; display: block; border-radius: 8px; }
        .site-header {
            background: linear-gradient(90deg, #1a2980 0%, #26d0ce 100%);
            color: white;
            padding: 1.5rem 0;
            border-bottom: 5px solid #e63946;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            padding: 0 1rem;
        }
        .my-logo {
            font-size: 2.4rem;
            font-weight: 800;
            text-shadow: 3px 3px 0 #000;
            letter-spacing: 1px;
            background: linear-gradient(45deg, #FFD700, #FFA500);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .my-logo a { background: none; -webkit-text-fill-color: inherit; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 5px;
        }
        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.2);
            color: #FFD700;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .breadcrumb {
            padding: 1rem;
            background: #edf2f7;
            border-radius: 8px;
            margin: 1rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb a::after {
            content: " › ";
            margin: 0 8px;
            color: #888;
        }
        .breadcrumb a:last-child::after { display: none; }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2rem 0;
        }
        @media (max-width: 1024px) {
            main { grid-template-columns: 1fr; }
        }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
        }
        h1 {
            font-size: 2.8rem;
            color: #1a2980;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-left: 8px solid #e63946;
            padding-left: 1.5rem;
        }
        h2 {
            font-size: 2.2rem;
            color: #2a5db0;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px dashed #26d0ce;
        }
        h3 {
            font-size: 1.8rem;
            color: #1d4e89;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.4rem;
            color: #555;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            hyphens: auto;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 500;
            color: #444;
            background: #f0f9ff;
            padding: 1.5rem;
            border-radius: 10px;
            border-left: 5px solid #2a5db0;
        }
        .highlight {
            background: linear-gradient(120deg, #a8edea 0%, #fed6e3 100%);
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
            border: 2px solid #26d0ce;
        }
        .key-term {
            font-weight: 800;
            color: #e63946;
            font-style: italic;
        }
        .stats-box {
            background: #1a2980;
            color: white;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
            text-align: center;
            box-shadow: 0 5px 15px rgba(26, 41, 128, 0.4);
        }
        .stats-box h3 { color: #FFD700; border: none; }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li { margin-bottom: 0.7rem; }
        .sidebar {
            background: white;
            padding: 1.8rem;
            border-radius: 15px;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .widget {
            margin-bottom: 2.5rem;
        }
        .widget h3 {
            font-size: 1.4rem;
            color: #1a2980;
            border-bottom: 2px solid #e63946;
            padding-bottom: 0.5rem;
            margin-bottom: 1.2rem;
        }
        .search-form, .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        input, textarea, select {
            padding: 0.9rem;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #2a5db0;
            box-shadow: 0 0 0 3px rgba(42, 93, 176, 0.2);
        }
        button {
            background: linear-gradient(90deg, #e63946, #ff6b6b);
            color: white;
            border: none;
            padding: 1rem 1.5rem;
            border-radius: 8px;
            font-weight: 700;
            cursor: pointer;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        button:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(230, 57, 70, 0.4);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 5px;
        }
        .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: #FFD700; }
        .site-footer {
            background: #1a1a2e;
            color: #ccc;
            padding: 3rem 2rem;
            margin-top: 3rem;
            border-radius: 15px 15px 0 0;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-widget h4 {
            color: #26d0ce;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        friend-link {
            display: block;
            padding: 0.8rem;
            background: #2a2a40;
            margin-bottom: 0.8rem;
            border-radius: 5px;
            border-left: 4px solid #e63946;
            transition: background 0.3s;
        }
        friend-link:hover { background: #3a3a50; }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #444;
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 768px) {
            .header-container { flex-direction: column; align-items: flex-start; }
            .main-nav { width: 100%; margin-top: 1rem; }
            .main-nav ul {
                flex-direction: column;
                gap: 0;
                display: none;
            }
            .main-nav.active ul {
                display: flex;
            }
            .hamburger { display: block; }
            .article-content { padding: 1.5rem; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            main { gap: 1.5rem; }
            .sidebar { position: static; }
        }