* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #e0e0e0;
            background: linear-gradient(135deg, #0a0a0f 0%, #1a1a2e 50%, #16213e 100%);
            background-attachment: fixed;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a { color: #4fc3f7; text-decoration: none; transition: color 0.3s, transform 0.2s; }
        a:hover { color: #29b6f6; transform: translateY(-2px); }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: rgba(10, 10, 20, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid #333;
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 15px 0;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Orbitron', sans-serif;
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(90deg, #ff6b6b, #4ecdc4, #45b7d1);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: 1px;
        }
        .my-logo:hover { transform: scale(1.05); }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .main-nav a {
            font-weight: 600;
            font-size: 1.1rem;
            padding: 8px 5px;
            border-bottom: 2px solid transparent;
        }
        .main-nav a:hover, .main-nav a.active {
            border-bottom-color: #4fc3f7;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #fff;
            background: none;
            border: none;
        }
        .breadcrumb {
            padding: 15px 0;
            font-size: 0.9rem;
            color: #aaa;
            background: rgba(30, 30, 46, 0.7);
        }
        .breadcrumb a { color: #aaa; }
        .breadcrumb a:hover { color: #4fc3f7; }
        .breadcrumb span { margin: 0 8px; }
        .search-container {
            background: rgba(40, 40, 60, 0.8);
            padding: 20px 0;
            margin: 20px 0;
            border-radius: 10px;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-input {
            flex-grow: 1;
            padding: 15px 20px;
            border: none;
            border-radius: 50px 0 0 50px;
            background: #2a2a3e;
            color: #fff;
            font-size: 1rem;
        }
        .search-btn {
            padding: 0 25px;
            background: linear-gradient(90deg, #ff6b6b, #ff8e53);
            color: white;
            border: none;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            font-weight: bold;
            transition: opacity 0.3s;
        }
        .search-btn:hover { opacity: 0.9; }
        main {
            flex: 1;
            padding: 30px 0;
        }
        .article-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        @media (max-width: 992px) {
            .article-grid { grid-template-columns: 1fr; }
        }
        .article-content {
            background: rgba(25, 25, 35, 0.85);
            border-radius: 15px;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
        }
        .article-sidebar {
            background: rgba(30, 30, 45, 0.85);
            border-radius: 15px;
            padding: 25px;
            align-self: start;
            position: sticky;
            top: 120px;
        }
        h1, h2, h3, h4 {
            color: #fff;
            margin-top: 1.8em;
            margin-bottom: 0.7em;
            line-height: 1.3;
        }
        h1 {
            font-size: 3rem;
            background: linear-gradient(90deg, #4ecdc4, #45b7d1);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            border-bottom: 3px solid #333;
            padding-bottom: 15px;
            margin-top: 0;
        }
        h2 { font-size: 2.2rem; color: #ffcc80; }
        h3 { font-size: 1.8rem; color: #a5d6a7; }
        h4 { font-size: 1.4rem; color: #ce93d8; }
        .article-intro {
            font-size: 1.3rem;
            color: #bbbbbb;
            margin: 25px 0;
            padding: 20px;
            background: rgba(40, 40, 60, 0.5);
            border-left: 5px solid #4fc3f7;
            border-radius: 0 10px 10px 0;
        }
        p {
            margin-bottom: 1.5em;
            text-align: justify;
        }
        .key-point {
            background: rgba(255, 193, 7, 0.1);
            border-left: 4px solid #ffc107;
            padding: 15px;
            margin: 20px 0;
            border-radius: 0 5px 5px 0;
        }
        .key-point i { color: #ffc107; margin-right: 10px; }
        .highlight {
            background: linear-gradient(120deg, rgba(79, 195, 247, 0.3) 0%, transparent 100%);
            padding: 2px 6px;
            border-radius: 3px;
            font-weight: bold;
        }
        blockquote {
            font-style: italic;
            color: #b0bec5;
            border-left: 4px solid #ff6b6b;
            padding-left: 20px;
            margin: 25px 0;
        }
        .featured-image {
            width: 100%;
            border-radius: 10px;
            overflow: hidden;
            margin: 30px 0;
            border: 2px solid #444;
            position: relative;
        }
        .featured-image img {
            width: 100%;
            transition: transform 0.5s;
        }
        .featured-image:hover img { transform: scale(1.03); }
        .img-caption {
            text-align: center;
            font-size: 0.9rem;
            color: #aaa;
            padding: 10px;
            background: rgba(0,0,0,0.7);
        }
        .interactive-box {
            background: rgba(50, 50, 70, 0.8);
            border-radius: 10px;
            padding: 25px;
            margin: 30px 0;
            border: 1px solid #555;
        }
        .rating-stars {
            display: flex;
            gap: 10px;
            margin: 15px 0;
        }
        .star {
            font-size: 2rem;
            color: #555;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover, .star.active { color: #ffc107; }
        .comment-form textarea, .comment-form input {
            width: 100%;
            padding: 12px;
            margin-bottom: 15px;
            background: #2a2a3e;
            border: 1px solid #444;
            border-radius: 5px;
            color: #fff;
            font-family: inherit;
        }
        .submit-btn {
            background: linear-gradient(90deg, #4caf50, #2e7d32);
            color: white;
            padding: 12px 30px;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-weight: bold;
            transition: opacity 0.3s;
        }
        .submit-btn:hover { opacity: 0.9; }
        .sidebar-widget {
            margin-bottom: 30px;
            padding-bottom: 20px;
            border-bottom: 1px solid #444;
        }
        .sidebar-widget:last-child { border-bottom: none; }
        .widget-title {
            color: #ffcc80;
            font-size: 1.4rem;
            margin-bottom: 15px;
            padding-bottom: 8px;
            border-bottom: 2px solid #ffcc80;
        }
        .related-links li {
            list-style: none;
            margin-bottom: 12px;
            padding-left: 20px;
            position: relative;
        }
        .related-links li:before {
            content: '➤';
            position: absolute;
            left: 0;
            color: #4fc3f7;
        }
        .update-time {
            font-size: 0.9rem;
            color: #81c784;
            background: rgba(129, 199, 132, 0.1);
            padding: 10px;
            border-radius: 5px;
            text-align: center;
        }
        .site-footer {
            background: rgba(10, 10, 20, 0.98);
            padding: 40px 0 20px;
            margin-top: 50px;
            border-top: 1px solid #333;
        }
        .footer-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 40px;
        }
        .footer-section { flex: 1; min-width: 250px; }
        .footer-section h3 {
            color: #4fc3f7;
            font-size: 1.3rem;
            margin-bottom: 20px;
        }
        .footer-links li {
            list-style: none;
            margin-bottom: 10px;
        }
        friend-link {
            display: block;
            background: rgba(60, 60, 80, 0.5);
            padding: 15px;
            margin: 10px 0;
            border-radius: 5px;
            transition: background 0.3s;
        }
        friend-link:hover { background: rgba(79, 195, 247, 0.2); }
        .copyright {
            text-align: center;
            padding-top: 20px;
            margin-top: 30px;
            border-top: 1px solid #444;
            color: #888;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav {
                position: fixed;
                top: 80px;
                left: -100%;
                width: 80%;
                height: calc(100vh - 80px);
                background: rgba(10, 10, 20, 0.98);
                flex-direction: column;
                padding: 30px;
                transition: left 0.4s;
                z-index: 999;
            }
            .main-nav.active { left: 0; }
            .main-nav ul {
                flex-direction: column;
                gap: 20px;
            }
            .header-container { padding: 0 15px; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            .article-content { padding: 25px; }
            .article-sidebar { position: static; }
        }