* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #1a237e;
            --secondary: #ffab00;
            --accent: #00acc1;
            --light: #f5f7ff;
            --dark: #121212;
            --gray: #6c757d;
            --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: var(--light);
            color: var(--dark);
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            text-decoration: none;
            color: var(--accent);
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        ul { list-style: none; }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            background: linear-gradient(135deg, var(--secondary), #ff8f00);
            color: white;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow);
            color: white;
            background: linear-gradient(135deg, #ff8f00, var(--secondary));
        }
        section { padding: 60px 0; }
        header {
            background-color: var(--primary);
            color: white;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i { color: var(--secondary); }
        .my-logo:hover { color: var(--secondary); }
        nav.desktop-nav ul {
            display: flex;
            gap: 30px;
        }
        nav.desktop-nav a {
            color: white;
            font-weight: 500;
        }
        nav.desktop-nav a:hover {
            color: var(--secondary);
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background-color: var(--primary);
            padding: 20px;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            box-shadow: var(--shadow);
        }
        .mobile-nav.active { display: flex; }
        .mobile-nav a {
            color: white;
            padding: 15px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .mobile-nav a:hover {
            background-color: rgba(255, 255, 255, 0.05);
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 15px 20px;
            font-size: 0.9rem;
        }
        .breadcrumb a { color: var(--gray); }
        .breadcrumb a:hover { color: var(--primary); }
        .breadcrumb span { color: var(--gray); margin: 0 8px; }
        .hero {
            background: linear-gradient(rgba(26, 35, 126, 0.85), rgba(0, 172, 193, 0.85)), url('https://images.unsplash.com/photo-1614732414444-096e5f1122d5?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80') center/cover no-repeat;
            color: white;
            text-align: center;
            padding: 100px 20px;
        }
        .hero h1 {
            font-size: 3.2rem;
            margin-bottom: 20px;
            line-height: 1.2;
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 30px;
            opacity: 0.9;
        }
        .search-box {
            background-color: white;
            padding: 40px;
            border-radius: 15px;
            box-shadow: var(--shadow);
            margin: -50px auto 50px;
            max-width: 800px;
            position: relative;
            z-index: 2;
        }
        .search-box h2 {
            color: var(--primary);
            margin-bottom: 20px;
            text-align: center;
        }
        .search-form {
            display: flex;
            gap: 10px;
        }
        .search-form input {
            flex: 1;
            padding: 15px;
            border: 2px solid #ddd;
            border-radius: 50px;
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        .search-form input:focus {
            border-color: var(--accent);
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            align-items: start;
        }
        .content-area {
            background: white;
            padding: 40px;
            border-radius: 15px;
            box-shadow: var(--shadow);
        }
        .content-area h2, .content-area h3, .content-area h4 {
            color: var(--primary);
            margin-top: 30px;
            margin-bottom: 15px;
        }
        .content-area h2 { font-size: 2rem; border-left: 5px solid var(--secondary); padding-left: 15px; }
        .content-area h3 { font-size: 1.6rem; }
        .content-area h4 { font-size: 1.3rem; color: var(--accent); }
        .content-area p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .content-area strong {
            color: var(--primary);
            font-weight: 700;
        }
        .content-area em { color: var(--gray); }
        .feature-img {
            margin: 30px auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .feature-img figcaption {
            text-align: center;
            font-style: italic;
            padding: 10px;
            background-color: #f8f9fa;
            color: var(--gray);
        }
        .internal-links {
            background-color: #f8f9fa;
            border-left: 4px solid var(--secondary);
            padding: 20px;
            margin: 30px 0;
            border-radius: 0 10px 10px 0;
        }
        .internal-links ul li {
            margin-bottom: 10px;
            padding-left: 10px;
        }
        .internal-links ul li:before {
            content: "🔗";
            margin-right: 10px;
        }
        .sidebar {
            position: sticky;
            top: 100px;
        }
        .sidebar-widget {
            background: white;
            padding: 25px;
            border-radius: 15px;
            box-shadow: var(--shadow);
            margin-bottom: 25px;
        }
        .sidebar-widget h3 {
            color: var(--primary);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--light);
        }
        .rating-widget .stars {
            display: flex;
            justify-content: center;
            gap: 5px;
            margin: 20px 0;
            font-size: 1.8rem;
            color: #ffc107;
        }
        .rating-form input, .comment-form textarea, .comment-form input {
            width: 100%;
            padding: 12px;
            margin-bottom: 15px;
            border: 1px solid #ddd;
            border-radius: 8px;
        }
        .update-time {
            background-color: var(--primary);
            color: white;
            padding: 15px;
            border-radius: 10px;
            text-align: center;
            font-weight: 600;
        }
        .update-time i { margin-right: 10px; }
        footer {
            background-color: var(--dark);
            color: #bbb;
            margin-top: auto;
            padding-top: 60px;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            margin-bottom: 20px;
        }
        .footer-links h4 {
            color: white;
            margin-bottom: 20px;
            font-size: 1.2rem;
        }
        .footer-links ul li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #bbb;
        }
        .footer-links a:hover {
            color: var(--secondary);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: rgba(255, 255, 255, 0.05);
            padding: 15px;
            border-radius: 8px;
            margin-bottom: 10px;
            transition: var(--transition);
        }
        friend-link:hover {
            background-color: rgba(255, 255, 255, 0.1);
            transform: translateX(5px);
        }
        .copyright {
            text-align: center;
            padding: 25px;
            border-top: 1px solid #333;
            font-size: 0.9rem;
            color: #888;
        }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
            .sidebar { position: static; }
        }
        @media (max-width: 768px) {
            .hero h1 { font-size: 2.5rem; }
            .header-container { flex-wrap: wrap; }
            nav.desktop-nav { display: none; }
            .mobile-menu-btn { display: block; }
            .search-form { flex-direction: column; }
            .search-form input, .search-form button { width: 100%; }
            .content-area { padding: 25px; }
            .footer-container { grid-template-columns: 1fr; text-align: center; }
        }