* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-dark: #0a1a2d;
            --primary-blue: #1a5fbf;
            --accent-orange: #ff6b35;
            --text-light: #f0f8ff;
            --text-gray: #b8c7d9;
            --card-bg: rgba(26, 39, 59, 0.8);
            --border-color: #2a4365;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-light);
            background: linear-gradient(135deg, var(--primary-dark) 0%, #162a4a 100%);
            background-attachment: fixed;
            min-height: 100vh;
        }
        a {
            color: var(--accent-orange);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #ff8c5a;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            background: linear-gradient(90deg, var(--accent-orange), #ff8c00);
            color: white;
            border: none;
            border-radius: 6px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s ease;
            text-align: center;
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(255, 107, 53, 0.3);
            text-decoration: none;
        }
        .section {
            padding: 60px 0;
        }
        header {
            background-color: rgba(10, 26, 45, 0.95);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 2px solid var(--border-color);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }
        .my-logo {
            font-family: 'Arial Black', Impact, sans-serif;
            font-size: 2.2rem;
            background: linear-gradient(90deg, #1a5fbf, var(--accent-orange));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-decoration: none;
            font-weight: 900;
            letter-spacing: 1px;
        }
        .my-logo:hover {
            text-decoration: none;
        }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .desktop-nav a {
            color: var(--text-light);
            font-weight: 600;
            padding: 8px 5px;
            border-bottom: 2px solid transparent;
        }
        .desktop-nav a:hover {
            border-bottom-color: var(--accent-orange);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: var(--text-light);
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            background-color: var(--primary-dark);
            padding: 20px;
            border-top: 1px solid var(--border-color);
        }
        .mobile-nav.active {
            display: block;
        }
        .mobile-nav ul {
            list-style: none;
        }
        .mobile-nav li {
            margin-bottom: 15px;
        }
        .mobile-nav a {
            color: var(--text-light);
            font-size: 1.1rem;
            display: block;
            padding: 10px;
            border-radius: 5px;
        }
        .mobile-nav a:hover {
            background-color: var(--card-bg);
        }
        .breadcrumb {
            padding: 15px 20px;
            background-color: rgba(26, 39, 59, 0.5);
            font-size: 0.9rem;
            color: var(--text-gray);
        }
        .breadcrumb a {
            color: var(--text-gray);
        }
        .hero {
            padding: 80px 20px;
            text-align: center;
            background: radial-gradient(circle at 20% 50%, rgba(26, 95, 191, 0.2) 0%, transparent 50%), radial-gradient(circle at 80% 20%, rgba(255, 107, 53, 0.15) 0%, transparent 50%);
        }
        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 25px;
            line-height: 1.2;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }
        .hero p {
            font-size: 1.3rem;
            max-width: 800px;
            margin: 0 auto 35px;
            color: var(--text-gray);
        }
        .search-section {
            background-color: var(--card-bg);
            border-radius: 12px;
            padding: 30px;
            margin: 40px auto;
            max-width: 800px;
            border: 1px solid var(--border-color);
        }
        .search-form {
            display: flex;
            gap: 10px;
        }
        .search-input {
            flex-grow: 1;
            padding: 15px 20px;
            border: 2px solid var(--border-color);
            border-radius: 8px;
            background-color: rgba(10, 26, 45, 0.7);
            color: var(--text-light);
            font-size: 1rem;
        }
        .search-input:focus {
            outline: none;
            border-color: var(--accent-orange);
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        article {
            background-color: var(--card-bg);
            border-radius: 12px;
            padding: 40px;
            border: 1px solid var(--border-color);
            margin-bottom: 30px;
        }
        article h2 {
            font-size: 2.5rem;
            color: var(--accent-orange);
            margin-bottom: 25px;
            padding-bottom: 15px;
            border-bottom: 3px solid var(--border-color);
        }
        article h3 {
            font-size: 1.8rem;
            color: #4fc3f7;
            margin: 35px 0 20px;
        }
        article h4 {
            font-size: 1.4rem;
            color: var(--text-gray);
            margin: 25px 0 15px;
        }
        article p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight-box {
            background: linear-gradient(135deg, rgba(26, 95, 191, 0.2), rgba(255, 107, 53, 0.1));
            border-left: 5px solid var(--accent-orange);
            padding: 25px;
            border-radius: 0 10px 10px 0;
            margin: 30px 0;
        }
        .feature-img {
            width: 100%;
            border-radius: 10px;
            border: 3px solid var(--border-color);
            margin: 30px auto;
            box-shadow: 0 10px 30px rgba(0,0,0,0.5);
        }
        .related-links {
            background-color: rgba(10, 26, 45, 0.6);
            padding: 20px;
            border-radius: 10px;
            margin: 30px 0;
        }
        .related-links h4 {
            color: var(--accent-orange);
            margin-bottom: 15px;
        }
        .related-links ul {
            list-style-type: square;
            padding-left: 25px;
            columns: 2;
        }
        .related-links li {
            margin-bottom: 10px;
        }
        aside {
            position: sticky;
            top: 120px;
            align-self: start;
        }
        .sidebar-card {
            background-color: var(--card-bg);
            border-radius: 12px;
            padding: 25px;
            margin-bottom: 25px;
            border: 1px solid var(--border-color);
        }
        .sidebar-card h3 {
            font-size: 1.5rem;
            color: var(--accent-orange);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .stars {
            display: flex;
            gap: 5px;
            font-size: 1.8rem;
            color: #ffd700;
            cursor: pointer;
        }
        .star:hover ~ .star,
        .star:hover {
            color: #ffd700;
        }
        textarea, input[type="text"], input[type="email"] {
            padding: 12px 15px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            background-color: rgba(10, 26, 45, 0.7);
            color: var(--text-light);
            font-family: inherit;
        }
        .comment-list {
            margin-top: 30px;
        }
        .comment-item {
            background-color: rgba(10, 26, 45, 0.5);
            padding: 20px;
            border-radius: 8px;
            margin-bottom: 20px;
            border-left: 4px solid var(--primary-blue);
        }
        .comment-author {
            font-weight: bold;
            color: var(--accent-orange);
            margin-bottom: 5px;
        }
        .comment-date {
            font-size: 0.9rem;
            color: var(--text-gray);
        }
        footer {
            background-color: rgba(5, 15, 30, 0.98);
            padding: 60px 0 30px;
            border-top: 2px solid var(--border-color);
            margin-top: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h4 {
            color: var(--accent-orange);
            margin-bottom: 25px;
            font-size: 1.3rem;
        }
        friend-link {
            display: block;
            margin-bottom: 10px;
            padding: 10px;
            background-color: rgba(255,255,255,0.05);
            border-radius: 6px;
            transition: background-color 0.3s;
        }
        friend-link:hover {
            background-color: rgba(255,107,53,0.2);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid var(--border-color);
            color: var(--text-gray);
            font-size: 0.9rem;
        }
        .update-time {
            color: var(--accent-orange);
            font-weight: bold;
            margin-top: 5px;
        }
        @media (max-width: 1024px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            aside {
                position: static;
            }
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .hero h1 {
                font-size: 2.5rem;
            }
            article {
                padding: 25px;
            }
            article h2 {
                font-size: 2rem;
            }
            .search-form {
                flex-direction: column;
            }
            .related-links ul {
                columns: 1;
            }
            .header-container {
                padding: 12px 20px;
            }
        }