* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }
        body { background: linear-gradient(135deg, #0c1e3e 0%, #152642 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: #80ccff; transform: translateY(-2px); }
        img { max-width: 100%; height: auto; border-radius: 10px; box-shadow: 0 5px 15px rgba(0,0,0,0.5); }
        .site-header { background: rgba(12, 30, 62, 0.95); backdrop-filter: blur(10px); padding: 1rem 2rem; position: sticky; top: 0; z-index: 1000; border-bottom: 2px solid #4da6ff; }
        .header-container { display: flex; justify-content: space-between; align-items: center; max-width: 1400px; margin: 0 auto; width: 100%; }
        .my-logo { font-size: 2.5rem; font-weight: 900; color: #4da6ff; text-shadow: 0 0 10px #4da6ff; letter-spacing: 2px; }
        .my-logo:hover { color: #80ccff; }
        .main-nav ul { display: flex; list-style: none; gap: 2rem; }
        .main-nav a { color: #b3d9ff; font-weight: 600; padding: 0.5rem 1rem; border-radius: 5px; }
        .main-nav a:hover { background: rgba(77, 166, 255, 0.2); }
        .hamburger { display: none; font-size: 1.8rem; color: #4da6ff; cursor: pointer; }
        .breadcrumb { padding: 1rem 2rem; background: rgba(20, 40, 70, 0.8); font-size: 0.9rem; max-width: 1400px; margin: 0 auto; width: 100%; }
        .breadcrumb a { color: #b3d9ff; }
        .breadcrumb a::after { content: ' › '; margin: 0 5px; }
        .breadcrumb a:last-child::after { content: ''; }
        main { flex: 1; max-width: 1400px; margin: 2rem auto; padding: 0 2rem; width: 100%; }
        article { background: rgba(25, 45, 80, 0.7); padding: 2.5rem; border-radius: 15px; border: 1px solid #2a4a7a; }
        h1 { color: #4da6ff; font-size: 3rem; margin-bottom: 1.5rem; text-align: center; text-shadow: 0 2px 5px rgba(0,0,0,0.7); }
        h2 { color: #66b3ff; font-size: 2.2rem; margin: 2.5rem 0 1rem; border-left: 5px solid #4da6ff; padding-left: 15px; }
        h3 { color: #99ccff; font-size: 1.8rem; margin: 2rem 0 0.8rem; }
        h4 { color: #c2e0ff; font-size: 1.4rem; margin: 1.5rem 0 0.6rem; }
        p { margin-bottom: 1.5rem; font-size: 1.1rem; text-align: justify; }
        .highlight { background: rgba(77, 166, 255, 0.1); border-left: 4px solid #4da6ff; padding: 1rem; margin: 1.5rem 0; border-radius: 0 8px 8px 0; }
        .emoji { font-size: 1.2em; margin-right: 5px; }
        .update-time { text-align: center; color: #99ccff; font-style: italic; margin-bottom: 2rem; font-size: 0.95rem; }
        .featured-image { text-align: center; margin: 2.5rem 0; }
        .featured-image figcaption { font-size: 0.9rem; color: #aaa; margin-top: 0.5rem; }
        .interactive-section { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; margin: 3rem 0; }
        .form-box { background: rgba(30, 50, 90, 0.8); padding: 1.8rem; border-radius: 10px; border: 1px solid #3a5a9a; }
        .form-box h3 { color: #66b3ff; margin-top: 0; }
        .form-box input, .form-box textarea, .form-box select { width: 100%; padding: 0.8rem; margin: 0.8rem 0; background: rgba(20, 40, 70, 0.9); border: 1px solid #4da6ff; border-radius: 5px; color: #e0e0e0; }
        .form-box button { background: linear-gradient(to right, #4da6ff, #0066cc); color: white; border: none; padding: 0.9rem 1.5rem; border-radius: 5px; cursor: pointer; font-weight: bold; transition: all 0.3s ease; }
        .form-box button:hover { background: linear-gradient(to right, #66b3ff, #0080ff); transform: scale(1.05); }
        .star-rating { display: flex; gap: 5px; margin: 0.8rem 0; }
        .star-rating input { display: none; }
        .star-rating label { font-size: 1.8rem; color: #666; cursor: pointer; transition: color 0.3s; }
        .star-rating input:checked ~ label, .star-rating label:hover, .star-rating label:hover ~ label { color: #ffcc00; }
        footer { background: #0c1e3e; padding: 3rem 2rem 1.5rem; margin-top: 3rem; border-top: 2px solid #4da6ff; }
        .footer-content { max-width: 1400px; margin: 0 auto; display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 2rem; }
        friend-link { display: block; background: rgba(20, 40, 70, 0.8); padding: 1rem; border-radius: 8px; margin-bottom: 1rem; }
        friend-link a { color: #99ccff; font-weight: 600; }
        .copyright { text-align: center; padding-top: 2rem; color: #888; font-size: 0.9rem; border-top: 1px solid #2a4a7a; margin-top: 2rem; }
        @media (max-width: 768px) {
            .header-container { flex-wrap: wrap; }
            .main-nav { display: none; width: 100%; order: 3; margin-top: 1rem; }
            .main-nav.active { display: block; }
            .main-nav ul { flex-direction: column; gap: 0.5rem; }
            .hamburger { display: block; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            article { padding: 1.5rem; }
            .interactive-section { grid-template-columns: 1fr; }
        }