* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
            max-width: 100%;
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        h1, h2, h3, h4 { color: #1a365d; margin-bottom: 0.75em; font-weight: 700; line-height: 1.2; }
        h1 { font-size: 2.8rem; margin-top: 1em; }
        h2 { font-size: 2.2rem; padding-top: 1em; border-top: 3px solid #e2e8f0; margin-top: 1.5em; }
        h3 { font-size: 1.8rem; color: #2d3748; }
        h4 { font-size: 1.4rem; color: #4a5568; }
        p { margin-bottom: 1.25em; font-size: 1.125rem; }
        a { color: #2b6cb0; text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #1a202c; text-decoration: underline; }
        strong { color: #1a365d; }
        em { font-style: italic; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .main-content { display: grid; grid-template-columns: 1fr 300px; gap: 40px; padding: 30px 0; }
        @media (max-width: 992px) { .main-content { grid-template-columns: 1fr; } }
        header { background: linear-gradient(135deg, #1a365d 0%, #2d3748 100%); color: white; padding: 1rem 0; position: sticky; top: 0; z-index: 1000; box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
        .header-container { display: flex; justify-content: space-between; align-items: center; }
        .logo a { font-size: 2rem; font-weight: 900; color: #fff; text-decoration: none; letter-spacing: -1px; }
        .logo a:hover { color: #63b3ed; }
        .my-logo::after { content: " 🎸"; }
        nav ul { display: flex; list-style: none; }
        nav li { margin-left: 2rem; }
        nav a { color: #cbd5e0; font-weight: 500; padding: 0.5rem 0; position: relative; }
        nav a:hover { color: #fff; }
        nav a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: #63b3ed; transition: width 0.3s; }
        nav a:hover::after { width: 100%; }
        .hamburger { display: none; font-size: 1.8rem; background: none; border: none; color: white; cursor: pointer; }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            nav ul { 
                flex-direction: column; 
                position: absolute; 
                top: 100%; left: 0; 
                width: 100%; 
                background: #2d3748; 
                padding: 1rem; 
                display: none; 
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
            }
            nav.active ul { display: flex; }
            nav li { margin: 0.75rem 0; margin-left: 0; }
        }
        .breadcrumb { padding: 1rem 0; background: #edf2f7; font-size: 0.95rem; }
        .breadcrumb a { color: #4a5568; }
        .breadcrumb a:hover { color: #1a365d; }
        .breadcrumb span { color: #718096; }
        .sidebar { background: #fff; padding: 25px; border-radius: 10px; box-shadow: 0 5px 15px rgba(0,0,0,0.05); height: fit-content; position: sticky; top: 140px; }
        .sidebar h3 { margin-top: 0; }
        .sidebar ul { list-style: none; }
        .sidebar li { margin-bottom: 0.75rem; }
        .sidebar a { color: #4a5568; display: block; padding: 0.5rem; border-radius: 5px; }
        .sidebar a:hover { background: #e2e8f0; color: #1a365d; }
        .widget { margin-bottom: 2rem; }
        .search-box, .comment-form, .rating-form { margin-bottom: 2rem; }
        .search-box input, .comment-form input, .comment-form textarea, .rating-form select { width: 100%; padding: 12px; margin-bottom: 10px; border: 1px solid #cbd5e0; border-radius: 5px; font-size: 1rem; }
        .search-box button, .comment-form button, .rating-form button { background: #2b6cb0; color: white; border: none; padding: 12px 20px; border-radius: 5px; cursor: pointer; width: 100%; font-weight: bold; transition: background 0.3s; }
        .search-box button:hover, .comment-form button:hover, .rating-form button:hover { background: #1a365d; }
        .star-rating { display: flex; justify-content: space-around; font-size: 1.5rem; color: #e2e8f0; margin-bottom: 15px; }
        .star-rating span { cursor: pointer; transition: color 0.2s; }
        .star-rating span:hover, .star-rating span.active { color: #f6ad55; }
        article { background: white; padding: 40px; border-radius: 10px; box-shadow: 0 5px 15px rgba(0,0,0,0.05); }
        .intro { font-size: 1.3rem; color: #4a5568; background: #ebf8ff; padding: 25px; border-left: 5px solid #4299e1; border-radius: 5px; margin-bottom: 2.5rem; }
        .featured-img { width: 100%; border-radius: 10px; overflow: hidden; margin: 2rem 0; box-shadow: 0 10px 20px rgba(0,0,0,0.1); }
        .highlight-box { background: #fefcbf; border: 1px solid #f6ad55; padding: 1.5rem; border-radius: 8px; margin: 2rem 0; }
        .link-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 15px; margin: 2rem 0; padding: 1.5rem; background: #f7fafc; border-radius: 8px; }
        .link-list a { display: block; padding: 12px; background: white; border-radius: 5px; border: 1px solid #e2e8f0; transition: transform 0.3s, box-shadow 0.3s; }
        .link-list a:hover { transform: translateY(-3px); box-shadow: 0 7px 14px rgba(0,0,0,0.1); text-decoration: none; }
        .update-time { text-align: right; font-size: 0.9rem; color: #718096; margin-top: 3rem; padding-top: 1rem; border-top: 1px dashed #cbd5e0; }
        footer { background: #1a202c; color: #cbd5e0; padding: 3rem 0 1.5rem; margin-top: 3rem; }
        .footer-container { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 2rem; }
        .footer-section h4 { color: #fff; margin-bottom: 1.5rem; }
        friend-link { display: block; margin-bottom: 1rem; }
        friend-link a { color: #90cdf4; }
        .copyright { text-align: center; padding-top: 2rem; margin-top: 2rem; border-top: 1px solid #2d3748; font-size: 0.9rem; color: #a0aec0; }
        .text-center { text-align: center; }
        .emoji { font-size: 1.2em; }
        .btn { display: inline-block; background: #4299e1; color: white; padding: 0.75rem 1.5rem; border-radius: 5px; font-weight: bold; transition: all 0.3s; }
        .btn:hover { background: #3182ce; transform: scale(1.05); text-decoration: none; }