* { margin: 0; padding: 0; box-sizing: border-box; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #222;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            min-height: 100vh;
        }
        a { color: #0066cc; text-decoration: none; transition: color 0.3s; }
        a:hover { color: #ff6600; text-decoration: underline; }
        .container { 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; }
        header { background: #001b4d; color: #fff; padding: 15px 0; box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
        .header-inner { display: flex; justify-content: space-between; align-items: center; }
        .my-logo { font-size: 2.2rem; font-weight: 900; color: #00ccff; text-transform: uppercase; letter-spacing: 1px; }
        .my-logo:hover { color: #ffcc00; text-shadow: 0 0 10px rgba(255,204,0,0.7); }
        .main-nav { display: flex; align-items: center; }
        .nav-list { display: flex; list-style: none; }
        .nav-list li { margin-left: 25px; }
        .nav-list a { color: #fff; font-weight: 600; padding: 8px 12px; border-radius: 5px; }
        .nav-list a:hover, .nav-list a.active { background: #00ccff; color: #001b4d; }
        .hamburger { display: none; font-size: 1.8rem; cursor: pointer; color: #fff; }
        .breadcrumb { background: #e6f2ff; padding: 12px 0; font-size: 0.95rem; }
        .breadcrumb a { color: #0066cc; }
        .breadcrumb span { color: #666; }
        main { padding: 30px 0; }
        article { background: #fff; border-radius: 12px; padding: 30px; box-shadow: 0 6px 20px rgba(0,0,0,0.08); }
        h1 { font-size: 2.8rem; color: #001b4d; margin-bottom: 15px; text-align: center; border-bottom: 3px solid #00ccff; padding-bottom: 15px; }
        h2 { font-size: 2.2rem; color: #003366; margin: 35px 0 15px; padding-bottom: 8px; border-bottom: 2px dashed #00ccff; }
        h3 { font-size: 1.8rem; color: #00509e; margin: 25px 0 10px; }
        h4 { font-size: 1.4rem; color: #0077cc; margin: 20px 0 8px; }
        p { margin-bottom: 20px; text-align: justify; font-size: 1.1rem; }
        .highlight { background: #fffacd; padding: 3px 6px; border-radius: 3px; font-weight: bold; }
        .emoji { font-size: 1.2em; }
        .update-time { text-align: right; font-style: italic; color: #666; margin-bottom: 25px; }
        .content-block { margin-bottom: 35px; }
        .img-wrapper { text-align: center; margin: 25px 0; }
        .article-img { max-width: 100%; height: auto; border-radius: 10px; box-shadow: 0 5px 15px rgba(0,0,0,0.1); border: 2px solid #00ccff; }
        .caption { font-size: 0.9rem; color: #666; margin-top: 8px; }
        ul, ol { margin-left: 25px; margin-bottom: 20px; }
        li { margin-bottom: 8px; }
        blockquote { border-left: 5px solid #00ccff; padding-left: 20px; margin: 25px 0; font-style: italic; color: #444; background: #f9fdff; padding: 15px; border-radius: 0 8px 8px 0; }
        .note { background: #e6f7ff; border-left: 4px solid #1890ff; padding: 12px; margin: 20px 0; border-radius: 0 5px 5px 0; }
        .form-section { background: #f0f8ff; padding: 25px; border-radius: 10px; margin: 30px 0; border: 1px solid #cce7ff; }
        .form-title { color: #003366; margin-bottom: 15px; }
        .form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 25px; }
        .form-group { margin-bottom: 15px; }
        label { display: block; margin-bottom: 5px; font-weight: 600; }
        input, textarea, select { width: 100%; padding: 12px; border: 1px solid #aaa; border-radius: 6px; font-size: 1rem; }
        button { background: linear-gradient(to right, #0066cc, #00ccff); color: #fff; border: none; padding: 12px 25px; border-radius: 6px; font-size: 1rem; font-weight: bold; cursor: pointer; transition: all 0.3s; }
        button:hover { background: linear-gradient(to right, #0052a3, #00b3e6); transform: translateY(-2px); box-shadow: 0 4px 8px rgba(0,102,204,0.3); }
        .stars { display: flex; gap: 5px; margin: 10px 0; }
        .star { font-size: 1.8rem; color: #ccc; cursor: pointer; }
        .star.active { color: #ffcc00; }
        footer { background: #001b4d; color: #fff; padding: 40px 0 20px; margin-top: 40px; }
        .footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 30px; margin-bottom: 30px; }
        .footer-col h3 { color: #00ccff; font-size: 1.5rem; margin-bottom: 15px; }
        .friend-links { list-style: none; }
        .friend-links li { margin-bottom: 10px; }
        .friend-links a { color: #a3d5ff; }
        .friend-links a:hover { color: #ffcc00; }
        .copyright { text-align: center; padding-top: 20px; border-top: 1px solid #003366; color: #a3d5ff; font-size: 0.9rem; }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .nav-list { display: none; flex-direction: column; position: absolute; top: 70px; left: 0; width: 100%; background: #001b4d; padding: 15px; z-index: 1000; box-shadow: 0 5px 10px rgba(0,0,0,0.2); }
            .nav-list.active { display: flex; }
            .nav-list li { margin: 10px 0; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            .header-inner { flex-wrap: wrap; }
            .form-grid { grid-template-columns: 1fr; }
        }