* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #f8f9fa;
            max-width: 100vw;
            overflow-x: hidden;
        }
        h1, h2, h3, h4 {
            font-family: 'Georgia', serif;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 1rem;
            color: #2c3e50;
        }
        h1 {
            font-size: 2.8rem;
            border-bottom: 4px solid #3498db;
            padding-bottom: 0.5rem;
            margin-top: 1.5rem;
        }
        h2 {
            font-size: 2.2rem;
            color: #2980b9;
            margin-top: 2.5rem;
            padding-left: 0.5rem;
            border-left: 5px solid #e74c3c;
        }
        h3 {
            font-size: 1.8rem;
            color: #16a085;
            margin-top: 2rem;
        }
        h4 {
            font-size: 1.4rem;
            color: #8e44ad;
            margin-top: 1.5rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            hyphens: auto;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin-top: 2rem;
        }
        .site-header {
            background: linear-gradient(135deg, #1a2980, #26d0ce);
            color: white;
            padding: 1.2rem 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;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:hover {
            color: #f1c40f;
            transform: scale(1.03);
            transition: transform 0.3s ease;
        }
        .my-logo i {
            font-size: 2.5rem;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .main-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0.8rem;
            border-radius: 6px;
            transition: all 0.3s ease;
        }
        .main-nav a:hover {
            background-color: rgba(255,255,255,0.15);
            transform: translateY(-2px);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: #ecf0f1;
            padding: 0.8rem 20px;
            font-size: 0.95rem;
            margin-top: 0.2rem;
        }
        .breadcrumb a {
            color: #3498db;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            color: #7f8c8d;
        }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0,0,0,0.05);
        }
        .featured-image {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: 10px;
            margin: 1.5rem 0;
            border: 5px solid #bdc3c7;
        }
        .highlight {
            background-color: #fffacd;
            padding: 1.5rem;
            border-left: 5px solid #f39c12;
            margin: 1.8rem 0;
            border-radius: 0 8px 8px 0;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .internal-link {
            color: #e74c3c;
            font-weight: 600;
            text-decoration: none;
            border-bottom: 2px dotted #e74c3c;
        }
        .internal-link:hover {
            color: #c0392b;
            border-bottom-style: solid;
        }
        .sidebar {
            background: white;
            padding: 1.8rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0,0,0,0.05);
            align-self: start;
            position: sticky;
            top: 140px;
        }
        .widget {
            margin-bottom: 2.5rem;
        }
        .widget-title {
            font-size: 1.4rem;
            color: #2c3e50;
            border-bottom: 2px solid #3498db;
            padding-bottom: 0.5rem;
            margin-bottom: 1.2rem;
        }
        .search-form {
            display: flex;
        }
        .search-input {
            flex: 1;
            padding: 0.8rem;
            border: 2px solid #3498db;
            border-radius: 6px 0 0 6px;
            font-size: 1rem;
        }
        .search-button {
            background-color: #3498db;
            color: white;
            border: none;
            padding: 0 1.2rem;
            border-radius: 0 6px 6px 0;
            cursor: pointer;
            font-size: 1.1rem;
            transition: background 0.3s;
        }
        .search-button:hover {
            background-color: #2980b9;
        }
        .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .form-input, .form-textarea {
            padding: 0.8rem;
            border: 1px solid #bdc3c7;
            border-radius: 6px;
            font-size: 1rem;
            width: 100%;
        }
        .form-textarea {
            min-height: 120px;
            resize: vertical;
        }
        .submit-button {
            background-color: #2ecc71;
            color: white;
            border: none;
            padding: 0.9rem;
            border-radius: 6px;
            font-size: 1.1rem;
            cursor: pointer;
            transition: background 0.3s;
        }
        .submit-button:hover {
            background-color: #27ae60;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #f1c40f;
            cursor: pointer;
        }
        .star:hover {
            transform: scale(1.2);
        }
        .site-footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: white;
            margin-bottom: 1rem;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .footer-links a {
            color: #bdc3c7;
            text-decoration: none;
        }
        .footer-links a:hover {
            color: #3498db;
        }
        friend-link {
            display: inline-block;
            background: #34495e;
            color: white;
            padding: 0.6rem 1.2rem;
            margin: 0.5rem;
            border-radius: 6px;
            text-decoration: none;
            transition: all 0.3s;
        }
        friend-link:hover {
            background: #3498db;
            transform: translateY(-3px);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #34495e;
            font-size: 0.9rem;
            color: #95a5a6;
        }
        .last-updated {
            font-style: italic;
            color: #7f8c8d;
            text-align: right;
            margin-top: 2rem;
            padding-top: 1rem;
            border-top: 1px dashed #bdc3c7;
        }
        @media (max-width: 992px) {
            .main-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
        }
        @media (max-width: 768px) {
            .header-content {
                flex-wrap: wrap;
            }
            .main-nav {
                display: none;
                width: 100%;
                order: 3;
                margin-top: 1rem;
            }
            .main-nav.active {
                display: block;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 0;
            }
            .main-nav a {
                display: block;
                padding: 0.8rem;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            .hamburger {
                display: block;
            }
            .article-content {
                padding: 1.5rem;
            }
            .footer-content {
                flex-direction: column;
            }
        }
        @media (max-width: 480px) {
            html { font-size: 14px; }
            .container { padding: 0 15px; }
            h1 { font-size: 2rem; }
        }
        .tooltip {
            position: relative;
            border-bottom: 1px dotted #3498db;
            cursor: help;
        }
        .tooltip:hover::after {
            content: attr(data-tooltip);
            position: absolute;
            bottom: 100%;
            left: 50%;
            transform: translateX(-50%);
            background: #2c3e50;
            color: white;
            padding: 0.5rem;
            border-radius: 4px;
            white-space: nowrap;
            z-index: 10;
            font-size: 0.9rem;
        }
        .pulse {
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0% { box-shadow: 0 0 0 0 rgba(52, 152, 219, 0.7); }
            70% { box-shadow: 0 0 0 10px rgba(52, 152, 219, 0); }
            100% { box-shadow: 0 0 0 0 rgba(52, 152, 219, 0); }
        }
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            background: white;
            box-shadow: 0 3px 10px rgba(0,0,0,0.05);
        }
        th, td {
            padding: 1rem;
            border: 1px solid #ddd;
            text-align: left;
        }
        th {
            background: #3498db;
            color: white;
            font-weight: 600;
        }
        tr:nth-child(even) {
            background: #f9f9f9;
        }
        tr:hover {
            background: #e3f2fd;
        }