* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-dark: #2c3e50;
            --primary-light: #3498db;
            --accent-warm: #e74c3c;
            --accent-cool: #9b59b6;
            --text-primary: #333;
            --text-secondary: #555;
            --background-light: #f9f9f9;
            --background-card: #fff;
            --border-color: #e1e1e1;
            --shadow: 0 4px 12px rgba(0,0,0,0.08);
            --transition: all 0.3s ease;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--background-light);
            max-width: 120rem;
            margin: 0 auto;
        }
        h1, h2, h3, h4 {
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 1rem;
            color: var(--primary-dark);
        }
        h1 { font-size: clamp(2.5rem, 5vw, 3.5rem); margin-top: 2rem; }
        h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); margin-top: 3rem; border-bottom: 2px solid var(--accent-cool); padding-bottom: 0.5rem; }
        h3 { font-size: clamp(1.5rem, 3vw, 2rem); margin-top: 2.5rem; color: var(--accent-warm); }
        h4 { font-size: 1.3rem; margin-top: 2rem; color: var(--primary-light); }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
        }
        .container {
            width: 95%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        .site-header {
            background-color: var(--primary-dark);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .my-logo span {
            color: var(--accent-warm);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
            transition: var(--transition);
        }
        .main-nav a:hover {
            color: var(--accent-warm);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--accent-warm);
            transition: var(--transition);
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: var(--background-card);
            padding: 1rem 0;
            border-bottom: 1px solid var(--border-color);
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--primary-light);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 3rem 0;
        }
        article {
            background-color: var(--background-card);
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: var(--shadow);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .widget {
            background-color: var(--background-card);
            padding: 1.8rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        .interactive-section {
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            border-left: 5px solid var(--primary-light);
            padding: 2rem;
            margin: 2.5rem 0;
            border-radius: 8px;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
        }
        input, textarea, select {
            padding: 0.9rem;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 1rem;
            font-family: inherit;
        }
        button, .btn {
            background-color: var(--primary-light);
            color: white;
            border: none;
            padding: 1rem 1.8rem;
            border-radius: 6px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            text-align: center;
            text-decoration: none;
            display: inline-block;
        }
        button:hover, .btn:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .rating-widget {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 1rem;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #ffc107;
            cursor: pointer;
        }
        .stars i:hover {
            transform: scale(1.2);
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            box-shadow: var(--shadow);
        }
        .data-table th, .data-table td {
            padding: 1.2rem;
            text-align: left;
            border-bottom: 1px solid var(--border-color);
        }
        .data-table th {
            background-color: var(--primary-dark);
            color: white;
            font-weight: 600;
        }
        .data-table tr:hover {
            background-color: #f1f8ff;
        }
        .article-image {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: 10px;
            margin: 2rem 0;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .article-image:hover {
            transform: scale(1.01);
        }
        .internal-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin: 2rem 0;
            padding: 1.5rem;
            background-color: #f0f7ff;
            border-radius: 10px;
        }
        .internal-links a {
            color: var(--primary-light);
            text-decoration: none;
            padding: 0.5rem 1rem;
            background-color: white;
            border-radius: 20px;
            border: 1px solid var(--primary-light);
            transition: var(--transition);
        }
        .internal-links a:hover {
            background-color: var(--primary-light);
            color: white;
        }
        .site-footer {
            background-color: var(--primary-dark);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 2rem;
        }
        friend-link {
            display: block;
            margin: 1rem 0;
        }
        friend-link a {
            color: #ddd;
            text-decoration: none;
            transition: var(--transition);
        }
        friend-link a:hover {
            color: var(--accent-warm);
            padding-left: 0.5rem;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
            .main-nav ul {
                gap: 1.5rem;
            }
        }
        @media (max-width: 768px) {
            .header-content {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            .main-nav {
                width: 100%;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.5s ease;
            }
            .main-nav.active {
                max-height: 300px;
                margin-top: 1rem;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 1rem;
            }
            .interactive-section {
                padding: 1.5rem;
            }
            article {
                padding: 1.8rem;
            }
        }
        .highlight {
            background-color: #fffacd;
            padding: 0.2rem 0.4rem;
            border-radius: 3px;
            font-weight: 600;
        }
        .update-time {
            font-style: italic;
            color: var(--text-secondary);
            margin-bottom: 2rem;
            display: block;
            font-size: 0.95rem;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.3rem;
        }
        blockquote {
            border-left: 4px solid var(--accent-cool);
            padding-left: 1.5rem;
            margin: 2rem 0;
            font-style: italic;
            color: var(--text-secondary);
            background-color: #f9f9f9;
            padding: 1.5rem;
            border-radius: 0 8px 8px 0;
        }