* { 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, #f5f7fa 0%, #e4e8ed 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a { color: #d32f2f; text-decoration: none; transition: color 0.3s ease, border-bottom 0.3s ease; border-bottom: 1px solid transparent; }
        a:hover { color: #9a0007; border-bottom: 1px solid #9a0007; }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(90deg, #1a1a1a 0%, #2c3e50 100%);
            color: #fff;
            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;
        }
        .my-logo {
            font-family: 'Rock Salt', cursive;
            font-size: 2.2rem;
            font-weight: 700;
            color: #ffcc00;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
            letter-spacing: 1px;
        }
        .my-logo:hover { color: #ffdb4d; text-shadow: 3px 3px 6px rgba(0,0,0,0.7); }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #ecf0f1;
            font-weight: 600;
            font-size: 1.1rem;
            border-bottom: 2px solid transparent;
            padding: 0.5rem 0;
        }
        .main-nav a:hover,
        .main-nav a.active { color: #ffcc00; border-bottom: 2px solid #ffcc00; }
        .breadcrumb {
            background: #ecf0f1;
            padding: 0.8rem 0;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .breadcrumb ul {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after { content: "›"; margin-left: 0.5rem; color: #7f8c8d; }
        .main-content { flex: 1; padding: 2rem 0; }
        article { background: #fff; border-radius: 12px; padding: 3rem; box-shadow: 0 6px 20px rgba(0,0,0,0.08); margin-bottom: 2rem; }
        h1 { font-size: 3.2rem; color: #2c3e50; margin-bottom: 1.5rem; border-left: 6px solid #d32f2f; padding-left: 1rem; }
        h2 { font-size: 2.4rem; color: #34495e; margin: 2.5rem 0 1rem; padding-bottom: 0.5rem; border-bottom: 3px solid #3498db; }
        h3 { font-size: 1.8rem; color: #2c3e50; margin: 2rem 0 1rem; }
        h4 { font-size: 1.4rem; color: #5d6d7e; margin: 1.5rem 0 0.8rem; }
        p { margin-bottom: 1.5rem; text-align: justify; hyphens: auto; }
        .lead { font-size: 1.3rem; font-weight: 300; color: #555; line-height: 1.9; }
        .highlight { background-color: #fffacd; padding: 0.2rem 0.4rem; border-radius: 3px; font-weight: 600; }
        .img-container {
            margin: 2rem auto;
            text-align: center;
            max-width: 800px;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        .img-container img { width: 100%; transition: transform 0.5s ease; }
        .img-container img:hover { transform: scale(1.02); }
        .img-caption { font-style: italic; color: #7f8c8d; margin-top: 0.5rem; font-size: 0.95rem; }
        .content-links { background: #f8f9fa; border-left: 4px solid #3498db; padding: 1.5rem; margin: 2rem 0; border-radius: 0 8px 8px 0; }
        .content-links h3 { margin-top: 0; }
        .content-links ul { list-style: none; display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 0.8rem; }
        .content-links li:before { content: "🎸"; margin-right: 0.5rem; }
        .update-time { text-align: right; font-size: 0.9rem; color: #95a5a6; margin-top: 3rem; padding-top: 1rem; border-top: 1px dashed #bdc3c7; }
        .interactive-module {
            background: #f1f8ff;
            border-radius: 10px;
            padding: 2rem;
            margin: 3rem 0;
            border: 1px solid #d1e9ff;
        }
        .module-title { color: #1a73e8; margin-bottom: 1.5rem; display: flex; align-items: center; gap: 0.8rem; }
        .module-title i { font-size: 1.5rem; }
        form { display: grid; gap: 1.2rem; max-width: 600px; }
        .form-group { display: flex; flex-direction: column; }
        label { font-weight: 600; margin-bottom: 0.5rem; color: #444; }
        input, textarea, select {
            padding: 0.8rem 1rem;
            border: 1px solid #ccc;
            border-radius: 6px;
            font-family: inherit;
            font-size: 1rem;
            transition: border 0.3s, box-shadow 0.3s;
        }
        input:focus, textarea:focus, select:focus { outline: none; border-color: #1a73e8; box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.2); }
        button, .btn {
            background: linear-gradient(90deg, #d32f2f 0%, #b71c1c 100%);
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 6px;
            font-weight: 700;
            font-size: 1.1rem;
            cursor: pointer;
            transition: all 0.3s ease;
            justify-self: start;
            display: inline-flex;
            align-items: center;
            gap: 0.7rem;
        }
        button:hover, .btn:hover { background: linear-gradient(90deg, #b71c1c 0%, #9a0007 100%); transform: translateY(-2px); box-shadow: 0 6px 12px rgba(183, 28, 28, 0.3); }
        .rating { display: flex; gap: 0.5rem; align-items: center; flex-wrap: wrap; }
        .star { font-size: 1.8rem; color: #ddd; cursor: pointer; transition: color 0.2s; }
        .star:hover, .star.active { color: #ffcc00; }
        .site-footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 0 1.5rem;
            margin-top: auto;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
        }
        .footer-logo { font-size: 2rem; margin-bottom: 1rem; }
        .footer-section h3 { color: #ffcc00; margin-bottom: 1.2rem; font-size: 1.4rem; }
        .footer-section ul { list-style: none; }
        .footer-section li { margin-bottom: 0.7rem; }
        .footer-section a { color: #bdc3c7; border-bottom: 1px dotted #7f8c8d; }
        .footer-section a:hover { color: #ffcc00; border-bottom: 1px solid #ffcc00; }
        friend-link {
            display: block;
            background: #34495e;
            padding: 1rem;
            border-radius: 6px;
            margin-top: 0.5rem;
            font-weight: 600;
        }
        friend-link a { color: #ffcc00; }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #4a6572;
            color: #95a5a6;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .nav-toggle { display: block; }
            .main-nav { display: none; width: 100%; }
            .main-nav.active { display: block; margin-top: 1rem; }
            .main-nav ul { flex-direction: column; gap: 0; }
            .main-nav li { border-bottom: 1px solid #4a6572; }
            .main-nav a { display: block; padding: 1rem; }
            h1 { font-size: 2.5rem; }
            h2 { font-size: 2rem; }
            h3 { font-size: 1.6rem; }
            article { padding: 1.5rem; }
            .header-container, .footer-container { flex-direction: column; text-align: center; }
            .content-links ul { grid-template-columns: 1fr; }
        }