* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: #4a6ee0;
            text-decoration: none;
            transition: color 0.3s ease, transform 0.2s ease;
        }
        a:hover {
            color: #ff6b9d;
            transform: translateY(-1px);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 8px;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(90deg, #1a237e, #4a148c);
            color: white;
            padding: 1rem 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;
        }
        .my-logo {
            font-family: 'Arial Black', sans-serif;
            font-size: 2.2rem;
            background: linear-gradient(to right, #ff9a9e, #fad0c4);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0 2px 4px rgba(0,0,0,0.2);
        }
        .my-logo:hover {
            transform: scale(1.05);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #e1f5fe;
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: 4px;
        }
        .main-nav a:hover, .main-nav a.active {
            background-color: rgba(255, 255, 255, 0.15);
            color: #fff;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 1rem 20px;
            background-color: #e8eaf6;
            font-size: 0.9rem;
            border-bottom: 1px solid #d1d9e6;
        }
        .breadcrumb a { color: #5c6bc0; }
        .breadcrumb span { color: #78909c; }
        main {
            flex: 1;
            padding: 2rem 0;
        }
        .article-container {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            .article-container { grid-template-columns: 1fr; }
        }
        .content-area {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        }
        .sidebar {
            background: white;
            padding: 1.5rem;
            border-radius: 12px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
            align-self: start;
            position: sticky;
            top: 100px;
        }
        h1 {
            font-size: 2.8rem;
            color: #2d3748;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-left: 6px solid #ff6b9d;
            padding-left: 1rem;
        }
        h2 {
            font-size: 2rem;
            color: #4a5568;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed #c5cae9;
        }
        h3 {
            font-size: 1.5rem;
            color: #5a67d8;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.2rem;
            color: #718096;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            color: #4a5568;
            font-weight: 500;
            background: #f0f4ff;
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 4px solid #4a6ee0;
        }
        .highlight {
            background: linear-gradient(120deg, #ffecd2 0%, #fcb69f 100%);
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .feature-img {
            margin: 2.5rem auto;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            overflow: hidden;
        }
        .feature-img:hover {
            transform: translateY(-5px);
            transition: transform 0.4s ease;
        }
        blockquote {
            font-style: italic;
            color: #555;
            border-left: 4px solid #9c27b0;
            padding-left: 1.5rem;
            margin: 2rem 0;
            background: #f9f9f9;
            padding: 1.5rem;
            border-radius: 0 8px 8px 0;
        }
        .interactive-module {
            background: #f8f9fa;
            border: 1px solid #e2e8f0;
            border-radius: 10px;
            padding: 1.8rem;
            margin: 2.5rem 0;
        }
        .module-title {
            font-size: 1.4rem;
            color: #2d3748;
            margin-bottom: 1.2rem;
            display: flex;
            align-items: center;
            gap: 0.7rem;
        }
        .module-title i { color: #4a6ee0; }
        .search-box, .comment-form, .rating-form {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
        }
        input, textarea, select {
            padding: 0.8rem 1rem;
            border: 1px solid #cbd5e0;
            border-radius: 6px;
            font-family: inherit;
            flex: 1;
            min-width: 200px;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #4a6ee0;
            box-shadow: 0 0 0 3px rgba(74, 110, 224, 0.2);
        }
        button, .btn {
            background: linear-gradient(90deg, #4a6ee0, #6a5af9);
            color: white;
            border: none;
            padding: 0.8rem 1.8rem;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        button:hover, .btn:hover {
            background: linear-gradient(90deg, #3a5ecf, #5a4ae9);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(74, 110, 224, 0.3);
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #ffd700;
            cursor: pointer;
            margin: 0.5rem 0;
        }
        .stars i:hover { transform: scale(1.2); }
        .update-time {
            font-size: 0.9rem;
            color: #718096;
            text-align: right;
            margin-top: 2rem;
            padding-top: 1rem;
            border-top: 1px solid #e2e8f0;
        }
        .site-footer {
            background: linear-gradient(90deg, #1a237e, #4a148c);
            color: #e1f5fe;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 2rem;
        }
        .footer-section {
            flex: 1;
            min-width: 250px;
        }
        .footer-section h3 {
            color: #ffcc80;
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
            border-bottom: 1px solid #5c6bc0;
            padding-bottom: 0.5rem;
        }
        friend-link {
            display: block;
            margin-bottom: 0.8rem;
            color: #bbdefb;
            padding: 0.4rem 0;
            border-radius: 4px;
            padding-left: 0.5rem;
            transition: all 0.3s;
        }
        friend-link:hover {
            background-color: rgba(255,255,255,0.1);
            color: white;
            padding-left: 1rem;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #5c6bc0;
            color: #b0bec5;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.7rem; }
            .content-area { padding: 1.5rem; }
            .header-container { flex-wrap: wrap; }
            .hamburger { display: block; }
            .main-nav {
                width: 100%;
                display: none;
                margin-top: 1rem;
            }
            .main-nav.active { display: block; }
            .main-nav ul {
                flex-direction: column;
                gap: 0.5rem;
            }
            .main-nav a {
                display: block;
                padding: 0.8rem;
                background: rgba(255,255,255,0.05);
            }
        }