* { 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: #2c3e50;
            background-color: #f8f9fa;
            max-width: 100vw;
            overflow-x: hidden;
        }
        a { color: #2980b9; text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #e74c3c; }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .text-center { text-align: center; }
        .bold { font-weight: 700; }
        .emoji { font-size: 1.2em; }
        .site-header {
            background: linear-gradient(135deg, #1a237e 0%, #283593 100%);
            color: white;
            padding: 1.5rem 0;
            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;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 900;
            color: white;
            text-decoration: none;
            font-family: 'Georgia', serif;
            letter-spacing: 1px;
            background: linear-gradient(to right, #ffcc80, #ffab91);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .logo a:hover { opacity: 0.9; }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .nav-desktop { display: none; }
        }
        .nav-desktop a {
            color: #ecf0f1;
            font-weight: 600;
            padding: 0.5rem 0.75rem;
            border-radius: 4px;
        }
        .nav-desktop a:hover {
            background-color: rgba(255, 255, 255, 0.15);
            color: #ffcc80;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background-color: #1a237e;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: 0 5px 10px rgba(0,0,0,0.2);
            z-index: 999;
        }
        .nav-mobile.active { display: flex; }
        .nav-mobile a {
            color: white;
            padding: 0.75rem 1rem;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .nav-mobile a:last-child { border-bottom: none; }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #f1f8ff;
            font-size: 0.9rem;
            border-bottom: 1px solid #e0e0e0;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin: 0 10px;
            color: #7f8c8d;
        }
        .breadcrumb a { color: #3498db; }
        .search-section {
            background-color: #e3f2fd;
            padding: 2rem 0;
            margin-bottom: 2rem;
        }
        .search-form {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
        }
        .search-input {
            flex: 1;
            padding: 1rem 1.5rem;
            border: none;
            font-size: 1rem;
            outline: none;
        }
        .search-button {
            background-color: #1a237e;
            color: white;
            border: none;
            padding: 0 1.8rem;
            cursor: pointer;
            font-size: 1.1rem;
            transition: background 0.3s;
        }
        .search-button:hover { background-color: #283593; }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
        }
        .article-body { background-color: white; padding: 2.5rem; border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,0.05); }
        .sidebar { background-color: white; padding: 1.5rem; border-radius: 12px; box-shadow: 0 5px 15px rgba(0,0,0,0.05); }
        h1 { font-size: 2.8rem; color: #1a237e; margin-bottom: 1.5rem; line-height: 1.2; }
        h2 { font-size: 2rem; color: #283593; margin: 2.5rem 0 1rem; padding-bottom: 0.5rem; border-bottom: 2px solid #ffcc80; }
        h3 { font-size: 1.5rem; color: #3949ab; margin: 2rem 0 0.8rem; }
        p { margin-bottom: 1.5rem; font-size: 1.1rem; }
        .lead { font-size: 1.3rem; color: #5a6268; font-weight: 300; }
        .highlight-box {
            background: linear-gradient(120deg, #e3f2fd 0%, #fce4ec 100%);
            border-left: 5px solid #1a237e;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .term { font-weight: bold; color: #d32f2f; }
        .rule-emoji::before { content: "⚡ "; }
        .article-image {
            margin: 2.5rem auto;
            text-align: center;
            max-width: 800px;
        }
        .article-image img {
            border-radius: 10px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
            border: 3px solid #ffffff;
        }
        .image-caption {
            font-style: italic;
            color: #666;
            margin-top: 0.75rem;
            font-size: 0.95rem;
        }
        .rating-section, .comments-section {
            margin-top: 3rem;
            padding: 2rem;
            background-color: #f8f9fa;
            border-radius: 12px;
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
            margin-top: 1rem;
        }
        .star-rating {
            direction: rtl;
            display: inline-block;
            font-size: 2rem;
        }
        .star-rating input { display: none; }
        .star-rating label {
            color: #ddd;
            cursor: pointer;
            padding: 0 2px;
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label { color: #ffcc00; }
        .form-group { display: flex; flex-direction: column; }
        .form-group label { font-weight: 600; margin-bottom: 0.5rem; }
        .form-input, .form-textarea {
            padding: 0.9rem;
            border: 1px solid #bdc3c7;
            border-radius: 6px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-input:focus, .form-textarea:focus {
            outline: none;
            border-color: #1a237e;
            box-shadow: 0 0 0 3px rgba(26, 35, 126, 0.1);
        }
        .form-textarea { min-height: 120px; resize: vertical; }
        .submit-button {
            background: linear-gradient(to right, #1a237e, #283593);
            color: white;
            border: none;
            padding: 1rem 2rem;
            font-size: 1.1rem;
            border-radius: 6px;
            cursor: pointer;
            align-self: flex-start;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .submit-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 7px 14px rgba(26, 35, 126, 0.3);
        }
        .sidebar-widget {
            margin-bottom: 2rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px solid #eee;
        }
        .sidebar-widget:last-child { border-bottom: none; }
        .sidebar-widget h4 {
            color: #1a237e;
            margin-bottom: 1rem;
            font-size: 1.3rem;
        }
        .widget-links { list-style: none; }
        .widget-links li { margin-bottom: 0.75rem; }
        .widget-links a { color: #555; display: block; padding: 0.4rem 0; }
        .widget-links a:hover { color: #1a237e; padding-left: 5px; }
        .longtail-links {
            background-color: #1a237e;
            color: white;
            padding: 2.5rem 0;
            margin-top: 3rem;
        }
        .web-link-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.2rem;
        }
        .web-link {
            background-color: rgba(255,255,255,0.08);
            padding: 1rem;
            border-radius: 6px;
            transition: background 0.3s;
        }
        .web-link:hover { background-color: rgba(255,255,255,0.15); }
        .web-link a { color: #ffcc80; font-weight: 600; }
        .site-footer {
            background-color: #0d1531;
            color: #b0bec5;
            padding: 2.5rem 0 1.5rem;
            text-align: center;
        }
        .footer-container { display: flex; flex-direction: column; align-items: center; }
        .copyright {
            margin-top: 1.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid #2c3e50;
            width: 100%;
            font-size: 0.9rem;
            color: #95a5a6;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.7rem; }
            .article-body { padding: 1.5rem; }
            .main-content { gap: 1.5rem; }
            .rating-section, .comments-section { padding: 1.5rem; }
        }