* { 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%, #e4edf5 100%);
            min-height: 100vh;
        }
        a { color: #2c5282; text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #1a365d; text-decoration: underline; }
        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, #1a365d 0%, #2a4365 100%);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .my-logo span { color: #63b3ed; }
        .nav-desktop { display: flex; gap: 1.5rem; }
        .nav-desktop a {
            color: #e2e8f0;
            font-weight: 600;
            padding: 0.5rem;
            border-radius: 4px;
        }
        .nav-desktop a:hover {
            background: rgba(255, 255, 255, 0.1);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background: #2a4365;
            padding: 1rem;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            box-shadow: 0 5px 10px rgba(0,0,0,0.2);
        }
        .nav-mobile.active { display: flex; }
        .nav-mobile a {
            color: #e2e8f0;
            padding: 0.75rem;
            border-bottom: 1px solid #4a5568;
        }
        .breadcrumb {
            background: #edf2f7;
            padding: 0.75rem 0;
            font-size: 0.9rem;
            color: #4a5568;
        }
        .breadcrumb a { color: #2d3748; }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
        }
        article { background: white; padding: 2.5rem; border-radius: 12px; box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08); }
        h1 { color: #1a365d; font-size: 2.8rem; margin-bottom: 1.5rem; line-height: 1.2; border-left: 5px solid #63b3ed; padding-left: 1rem; }
        h2 { color: #2d3748; font-size: 2rem; margin: 2.5rem 0 1rem; padding-bottom: 0.5rem; border-bottom: 2px solid #e2e8f0; }
        h3 { color: #4a5568; font-size: 1.5rem; margin: 1.8rem 0 0.8rem; }
        h4 { color: #718096; font-size: 1.2rem; margin: 1.5rem 0 0.5rem; }
        p { margin-bottom: 1.2rem; text-align: justify; }
        .lead { font-size: 1.2rem; color: #2d3748; font-weight: 500; background: #f7fafc; padding: 1rem; border-radius: 8px; border-left: 4px solid #4299e1; }
        .highlight { background: #fffacd; padding: 0.2rem 0.4rem; border-radius: 3px; font-weight: 600; }
        .emoji { font-size: 1.2em; margin-right: 0.3rem; }
        .inline-link { font-weight: 600; color: #2b6cb0; border-bottom: 1px dashed; }
        .feature-img {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: 10px;
            margin: 2rem 0;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
            border: 5px solid white;
        }
        .info-box {
            background: #ebf8ff;
            border-left: 5px solid #3182ce;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .stat-card {
            background: #f8f9fa;
            padding: 1.5rem;
            border-radius: 10px;
            text-align: center;
            border-top: 4px solid #4299e1;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        .stat-card i { font-size: 2.5rem; color: #2b6cb0; margin-bottom: 1rem; }
        .update-time {
            font-size: 0.9rem;
            color: #718096;
            text-align: right;
            margin-top: 3rem;
            padding-top: 1rem;
            border-top: 1px solid #e2e8f0;
        }
        .sidebar { background: white; padding: 1.5rem; border-radius: 12px; box-shadow: 0 5px 15px rgba(0,0,0,0.05); }
        .widget { margin-bottom: 2rem; }
        .widget h3 { font-size: 1.3rem; margin-top: 0; }
        .search-form { display: flex; }
        .search-form input {
            flex: 1;
            padding: 0.75rem;
            border: 1px solid #cbd5e0;
            border-radius: 6px 0 0 6px;
            font-size: 1rem;
        }
        .search-form button {
            background: #3182ce;
            color: white;
            border: none;
            padding: 0 1.2rem;
            border-radius: 0 6px 6px 0;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-form button:hover { background: #2c5282; }
        .interaction-form { background: #f7fafc; padding: 1.5rem; border-radius: 8px; }
        .interaction-form label { display: block; margin-top: 1rem; font-weight: 600; }
        .interaction-form input, .interaction-form textarea, .interaction-form select {
            width: 100%;
            padding: 0.75rem;
            margin-top: 0.3rem;
            border: 1px solid #cbd5e0;
            border-radius: 6px;
            font-family: inherit;
        }
        .interaction-form button {
            background: #38a169;
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            margin-top: 1rem;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            width: 100%;
            transition: background 0.3s;
        }
        .interaction-form button:hover { background: #2f855a; }
        .star-rating { display: flex; gap: 0.5rem; margin: 0.5rem 0; }
        .star-rating input { display: none; }
        .star-rating label { font-size: 1.5rem; color: #cbd5e0; cursor: pointer; margin: 0; }
        .star-rating input:checked ~ label { color: #ecc94b; }
        .star-rating label:hover,
        .star-rating label:hover ~ label { color: #f6e05e; }
        .site-footer {
            background: #1a202c;
            color: #a0aec0;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-logo { font-size: 1.8rem; color: white; margin-bottom: 1rem; }
        friend-link {
            display: block;
            background: #2d3748;
            color: #63b3ed;
            padding: 1rem;
            margin: 0.5rem 0;
            border-radius: 6px;
            transition: background 0.3s;
        }
        friend-link:hover {
            background: #4a5568;
            text-decoration: none;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #2d3748;
            font-size: 0.9rem;
            color: #718096;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .nav-desktop { display: none; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.7rem; }
            article { padding: 1.5rem; }
            .header-container, .footer-container { flex-direction: column; text-align: center; }
        }