* { 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: #333;
            background: linear-gradient(135deg, #0a2e38 0%, #1a1a2e 100%);
            color: #f0f0f0;
            min-height: 100vh;
        }
        a { color: #4fc3f7; text-decoration: none; transition: color 0.3s, transform 0.2s; }
        a:hover { color: #03a9f4; transform: translateY(-2px); }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
        .site-header {
            background: rgba(10, 25, 35, 0.95);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 1rem 0;
            border-bottom: 2px solid #0d7377;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Trebuchet MS', sans-serif;
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(to right, #ffcc00, #ff9900);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 2px 4px rgba(0,0,0,0.3);
        }
        .my-logo:hover { transform: scale(1.05); }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #bbbbbb;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover,
        .main-nav a.active { color: #fff; }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: #0d7377;
            transition: width 0.3s;
        }
        .main-nav a:hover::after { width: 100%; }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav {
                position: fixed;
                top: 70px;
                left: -100%;
                width: 80%;
                height: calc(100vh - 70px);
                background: rgba(10, 25, 35, 0.98);
                transition: left 0.4s ease;
                padding: 2rem;
                overflow-y: auto;
            }
            .main-nav.active { left: 0; }
            .main-nav ul {
                flex-direction: column;
                gap: 1.5rem;
            }
        }
        .breadcrumb {
            padding: 1rem 0;
            background: rgba(255,255,255,0.05);
            margin-bottom: 2rem;
            font-size: 0.9rem;
        }
        .breadcrumb ul {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 0.5rem;
            color: #888;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
        }
        .article-content {
            background: rgba(30, 40, 50, 0.8);
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid #444;
            font-size: 0.9rem;
            color: #aaa;
        }
        .update-time { color: #4fc3f7; }
        h1 {
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            color: #fff;
            line-height: 1.2;
            text-shadow: 0 2px 5px rgba(0,0,0,0.5);
        }
        h2 {
            font-size: 2rem;
            margin: 2.5rem 0 1rem;
            color: #ffcc00;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #0d7377;
        }
        h3 {
            font-size: 1.6rem;
            margin: 2rem 0 0.8rem;
            color: #4fc3f7;
        }
        h4 {
            font-size: 1.3rem;
            margin: 1.5rem 0 0.6rem;
            color: #a5d6a7;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.2rem;
            background: rgba(13, 115, 119, 0.2);
            padding: 1.5rem;
            border-left: 5px solid #0d7377;
            border-radius: 0 10px 10px 0;
            margin-bottom: 2rem;
        }
        .highlight {
            background: rgba(255, 204, 0, 0.1);
            border-left: 4px solid #ffcc00;
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 8px 8px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .stat-card {
            background: rgba(255,255,255,0.05);
            padding: 1.5rem;
            border-radius: 10px;
            text-align: center;
            border: 1px solid #444;
        }
        .stat-card i { font-size: 2.5rem; color: #ff9900; margin-bottom: 1rem; }
        .stat-card h4 { color: #fff; margin-top: 0; }
        .feature-img {
            margin: 2.5rem auto;
            border-radius: 12px;
            overflow: hidden;
            border: 3px solid #0d7377;
            max-width: 800px;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: rgba(30, 40, 50, 0.8);
            padding: 1.5rem;
            border-radius: 10px;
            border: 1px solid #444;
        }
        .sidebar-widget h3 {
            font-size: 1.3rem;
            margin-top: 0;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid #555;
        }
        .search-form {
            display: flex;
        }
        .search-input {
            flex-grow: 1;
            padding: 0.8rem;
            border: 1px solid #555;
            background: #222;
            color: #fff;
            border-radius: 5px 0 0 5px;
        }
        .search-btn {
            background: #0d7377;
            color: white;
            border: none;
            padding: 0 1.2rem;
            border-radius: 0 5px 5px 0;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-btn:hover { background: #0a5a5e; }
        .rating-widget {
            text-align: center;
        }
        .stars {
            font-size: 2rem;
            color: #ffcc00;
            margin: 1rem 0;
            cursor: pointer;
        }
        .stars i { transition: color 0.2s; }
        .stars i:hover,
        .stars i.active { color: #ff9900; }
        .comment-form textarea {
            width: 100%;
            padding: 0.8rem;
            background: #222;
            border: 1px solid #555;
            color: #fff;
            border-radius: 5px;
            resize: vertical;
            min-height: 100px;
            margin-bottom: 1rem;
        }
        .submit-btn {
            width: 100%;
            padding: 0.8rem;
            background: #0d7377;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-weight: bold;
            transition: background 0.3s;
        }
        .submit-btn:hover { background: #0a5a5e; }
        .site-footer {
            background: rgba(10, 20, 30, 0.95);
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
            border-top: 2px solid #0d7377;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin: 1rem 0;
        }
        friend-link {
            display: inline-block;
            background: rgba(255,255,255,0.05);
            padding: 0.5rem 1rem;
            border-radius: 5px;
            border: 1px solid #444;
            transition: all 0.3s;
        }
        friend-link:hover {
            background: rgba(13, 115, 119, 0.3);
            border-color: #0d7377;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #444;
            color: #888;
            font-size: 0.9rem;
        }
        .text-center { text-align: center; }
        .mb-2 { margin-bottom: 2rem; }
        .bold { font-weight: 800; color: #ffcc00; }
        .emoji { font-size: 1.2em; margin-right: 0.3rem; }