* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background: linear-gradient(135deg, #0c2a4d 0%, #1a3d6c 100%);
            color: #e0e0e0;
            line-height: 1.7;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: #4da6ff;
            text-decoration: none;
            transition: color 0.3s ease, transform 0.2s ease;
        }
        a:hover {
            color: #80c1ff;
            transform: translateY(-2px);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 8px;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: rgba(12, 42, 77, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 2px solid #2a5285;
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 15px 0;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(90deg, #ffd700, #ffa500);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: 1px;
        }
        .logo a:hover {
            transform: scale(1.05);
        }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .desktop-nav a {
            font-weight: 600;
            padding: 8px 15px;
            border-radius: 20px;
            font-size: 1.05rem;
        }
        .desktop-nav a:hover {
            background: rgba(77, 166, 255, 0.15);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #ffd700;
        }
        .mobile-nav {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            background: rgba(12, 42, 77, 0.98);
            flex-direction: column;
            padding: 20px;
            border-top: 1px solid #2a5285;
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav ul {
            list-style: none;
        }
        .mobile-nav li {
            margin: 15px 0;
        }
        .mobile-nav a {
            display: block;
            padding: 12px;
            border-radius: 8px;
            font-size: 1.1rem;
        }
        .mobile-nav a:hover {
            background: rgba(77, 166, 255, 0.2);
        }
        .breadcrumb {
            background: rgba(20, 50, 90, 0.6);
            padding: 12px 0;
            margin-bottom: 25px;
            font-size: 0.95rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin: 0 10px;
            color: #aaa;
        }
        .breadcrumb a {
            color: #b3d9ff;
        }
        .search-section {
            background: rgba(30, 60, 100, 0.5);
            padding: 25px;
            border-radius: 12px;
            margin: 30px 0;
            text-align: center;
            border: 1px solid #3a6ba5;
        }
        .search-section h2 {
            margin-bottom: 15px;
            color: #ffd700;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-form input {
            flex: 1;
            padding: 15px 20px;
            border: 2px solid #2a5285;
            border-radius: 30px 0 0 30px;
            background: #0c2a4d;
            color: white;
            font-size: 1rem;
        }
        .search-form button {
            padding: 0 30px;
            background: linear-gradient(90deg, #ff8c00, #ffd700);
            border: none;
            border-radius: 0 30px 30px 0;
            color: #0c2a4d;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .search-form button:hover {
            background: linear-gradient(90deg, #ffd700, #ff8c00);
        }
        main {
            flex: 1;
            padding: 30px 0 50px;
        }
        article {
            background: rgba(20, 40, 70, 0.8);
            border-radius: 16px;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
            border: 1px solid #355d8c;
        }
        h1 {
            font-size: 2.8rem;
            color: #ffd700;
            margin-bottom: 25px;
            line-height: 1.2;
            text-align: center;
            border-bottom: 3px solid #ff8c00;
            padding-bottom: 20px;
        }
        h2 {
            font-size: 2rem;
            color: #4da6ff;
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px dashed #3a6ba5;
        }
        h3 {
            font-size: 1.6rem;
            color: #80c1ff;
            margin: 30px 0 15px;
        }
        h4 {
            font-size: 1.3rem;
            color: #a3d5ff;
            margin: 25px 0 12px;
        }
        p {
            margin-bottom: 22px;
            font-size: 1.1rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.25rem;
            background: rgba(42, 82, 133, 0.3);
            padding: 25px;
            border-left: 5px solid #ffd700;
            border-radius: 0 10px 10px 0;
            margin-bottom: 35px;
        }
        .highlight {
            background: linear-gradient(90deg, rgba(255, 215, 0, 0.15), transparent);
            padding: 20px;
            border-radius: 10px;
            border: 1px solid rgba(255, 215, 0, 0.3);
            margin: 25px 0;
        }
        .featured-image {
            margin: 35px auto;
            max-width: 900px;
            box-shadow: 0 15px 25px rgba(0, 0, 0, 0.5);
            border: 3px solid #ffd700;
        }
        .featured-image figcaption {
            text-align: center;
            font-style: italic;
            margin-top: 10px;
            color: #aaa;
        }
        .content-link {
            font-weight: 600;
            border-bottom: 1px dotted #4da6ff;
        }
        .interactive-box {
            background: rgba(30, 60, 100, 0.7);
            border-radius: 12px;
            padding: 25px;
            margin: 30px 0;
            border-left: 6px solid #ff8c00;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .interactive-box:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 20px rgba(0, 0, 0, 0.5);
        }
        .user-feedback {
            background: rgba(25, 55, 95, 0.9);
            border-radius: 16px;
            padding: 35px;
            margin-top: 50px;
            border: 1px solid #4a7bb5;
        }
        .rating-section, .comment-section {
            margin-bottom: 35px;
        }
        .stars {
            display: flex;
            gap: 10px;
            margin: 15px 0;
        }
        .star {
            font-size: 2rem;
            color: #555;
            cursor: pointer;
            transition: color 0.2s, transform 0.2s;
        }
        .star:hover,
        .star.active {
            color: #ffd700;
            transform: scale(1.2);
        }
        .feedback-form input,
        .feedback-form textarea {
            width: 100%;
            padding: 15px;
            margin: 10px 0 20px;
            background: #0c2a4d;
            border: 2px solid #2a5285;
            border-radius: 8px;
            color: white;
            font-size: 1rem;
        }
        .feedback-form button {
            padding: 15px 35px;
            background: linear-gradient(90deg, #00cc66, #00b359);
            border: none;
            border-radius: 30px;
            color: white;
            font-weight: bold;
            font-size: 1.1rem;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .feedback-form button:hover {
            background: linear-gradient(90deg, #00b359, #00994d);
            transform: scale(1.05);
        }
        footer {
            background: #0a1f3a;
            border-top: 3px solid #2a5285;
            padding: 40px 0 20px;
            margin-top: 60px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 30px;
        }
        .footer-section h3 {
            color: #ffd700;
            margin-bottom: 20px;
            font-size: 1.4rem;
        }
        friend-link {
            display: block;
            background: rgba(42, 82, 133, 0.4);
            padding: 15px;
            margin: 10px 0;
            border-radius: 8px;
            transition: background 0.3s;
        }
        friend-link:hover {
            background: rgba(42, 82, 133, 0.8);
        }
        .copyright {
            text-align: center;
            padding-top: 25px;
            border-top: 1px solid #2a5285;
            color: #aaa;
            font-size: 0.95rem;
        }
        .update-time {
            background: rgba(255, 215, 0, 0.1);
            padding: 10px 20px;
            border-radius: 20px;
            display: inline-block;
            margin: 20px 0;
            font-size: 0.95rem;
            color: #ffd700;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.8rem; }
            .desktop-nav { display: none; }
            .hamburger { display: block; }
            .header-container { padding: 0 15px; }
            article { padding: 30px 20px; }
        }
        @media (max-width: 768px) {
            .container { padding: 0 15px; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            .search-form { flex-direction: column; }
            .search-form input, .search-form button { border-radius: 30px; margin: 5px 0; }
            .footer-content { grid-template-columns: 1fr; }
        }
        @media (max-width: 480px) {
            h1 { font-size: 1.8rem; }
            .intro { font-size: 1.1rem; padding: 20px; }
            .user-feedback { padding: 25px 15px; }
        }