* { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.8; color: #222; background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%); }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        header { background: linear-gradient(90deg, #003366 0%, #0066cc 100%); color: white; box-shadow: 0 4px 12px rgba(0,0,0,0.1); position: sticky; top: 0; z-index: 1000; }
        .header-inner { display: flex; justify-content: space-between; align-items: center; padding: 1rem 0; }
        .my-logo { font-size: 2.2rem; font-weight: 900; text-decoration: none; color: white; text-shadow: 2px 2px 4px rgba(0,0,0,0.3); transition: color 0.3s; }
        .my-logo:hover { color: #ffcc00; }
        nav { display: flex; align-items: center; }
        .nav-links { display: flex; list-style: none; }
        .nav-links li { margin-left: 2rem; }
        .nav-links a { color: white; text-decoration: none; font-weight: 600; padding: 0.5rem 1rem; border-radius: 4px; transition: background 0.3s; }
        .nav-links a:hover { background: rgba(255,255,255,0.2); }
        .hamburger { display: none; font-size: 1.8rem; cursor: pointer; }
        .breadcrumb { padding: 1rem 0; background: #e6f0ff; font-size: 0.9rem; }
        .breadcrumb ul { display: flex; list-style: none; flex-wrap: wrap; }
        .breadcrumb li { margin-right: 0.5rem; }
        .breadcrumb a { color: #0066cc; text-decoration: none; }
        .breadcrumb a:hover { text-decoration: underline; }
        main { padding: 2rem 0; }
        article { background: white; border-radius: 12px; padding: 3rem; box-shadow: 0 6px 20px rgba(0,0,0,0.1); }
        h1 { font-size: 3rem; color: #003366; margin-bottom: 1rem; text-align: center; }
        h2 { font-size: 2.2rem; color: #0066cc; margin-top: 3rem; margin-bottom: 1rem; border-bottom: 3px solid #ffcc00; padding-bottom: 0.5rem; }
        h3 { font-size: 1.8rem; color: #003366; margin-top: 2rem; margin-bottom: 0.8rem; }
        h4 { font-size: 1.4rem; color: #555; margin-top: 1.5rem; margin-bottom: 0.5rem; }
        p { margin-bottom: 1.5rem; text-align: justify; font-size: 1.1rem; }
        .highlight { background: linear-gradient(90deg, #fffacd 0%, #f0f8ff 100%); padding: 1.5rem; border-left: 6px solid #ffcc00; margin: 2rem 0; border-radius: 8px; }
        .emoji { font-size: 1.2rem; margin-right: 0.5rem; }
        .form-section { margin: 3rem 0; padding: 2rem; border: 2px solid #c3cfe2; border-radius: 10px; background: #f9fbff; }
        form { display: grid; grid-template-columns: 1fr; gap: 1rem; }
        input, textarea, select { padding: 0.8rem; border: 1px solid #ccc; border-radius: 6px; font-size: 1rem; }
        button { padding: 0.8rem 1.5rem; background: linear-gradient(90deg, #0066cc 0%, #003366 100%); color: white; border: none; border-radius: 6px; cursor: pointer; font-weight: bold; transition: transform 0.2s; }
        button:hover { transform: scale(1.05); }
        img { max-width: 100%; height: auto; border-radius: 10px; margin: 2rem auto; display: block; box-shadow: 0 4px 12px rgba(0,0,0,0.2); }
        footer { background: linear-gradient(90deg, #003366 0%, #001a33 100%); color: white; padding: 3rem 0; margin-top: 3rem; }
        .friend-links { display: flex; justify-content: center; flex-wrap: wrap; gap: 2rem; margin-bottom: 2rem; }
        friend-link { font-size: 1.1rem; }
        friend-link a { color: #ffcc00; text-decoration: none; padding: 0.5rem 1rem; border: 1px solid #ffcc00; border-radius: 6px; transition: all 0.3s; }
        friend-link a:hover { background: #ffcc00; color: #003366; }
        .copyright { text-align: center; font-size: 0.9rem; opacity: 0.8; margin-top: 2rem; }
        .update-time { font-style: italic; color: #666; margin-bottom: 2rem; }
        @media (max-width: 768px) {
            .header-inner { flex-wrap: wrap; }
            .nav-links { display: none; flex-direction: column; position: absolute; top: 100%; left: 0; width: 100%; background: #003366; padding: 1rem; }
            .nav-links.active { display: flex; }
            .nav-links li { margin: 0.5rem 0; }
            .hamburger { display: block; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            article { padding: 1.5rem; }
        }