* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4efe9 100%);
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 15px;
        }
        a { color: #2a5c82; text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #d35400; }
        img { max-width: 100%; height: auto; display: block; }
        .container { width: 100%; padding-right: 15px; padding-left: 15px; margin-right: auto; margin-left: auto; }
        .site-header {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 1.5rem 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;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(to right, #f39c12, #e74c3c);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            padding: 5px 0;
        }
        .my-logo a { color: inherit; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #bdc3c7;
            font-weight: 600;
            padding: 8px 12px;
            border-radius: 4px;
        }
        .main-nav a:hover,
        .main-nav a.active {
            background: #34495e;
            color: #f39c12;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: #ecf0f1;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            color: #7f8c8d;
            background: #f8f9fa;
            border-radius: 5px;
            margin: 1rem 0;
        }
        .breadcrumb a { color: #3498db; }
        .breadcrumb span { margin: 0 8px; color: #95a5a6; }
        .search-section {
            background: #ffffff;
            padding: 2rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            margin: 2rem 0;
            text-align: center;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-input {
            flex-grow: 1;
            padding: 15px 20px;
            border: 2px solid #3498db;
            border-radius: 50px 0 0 50px;
            font-size: 1.1rem;
            outline: none;
        }
        .search-btn {
            background: #3498db;
            color: white;
            border: none;
            padding: 0 30px;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            font-size: 1.1rem;
            transition: background 0.3s;
        }
        .search-btn:hover { background: #2980b9; }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin: 2rem 0;
        }
        @media (max-width: 992px) {
            main { grid-template-columns: 1fr; }
        }
        .content-area {
            background: #fff;
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
        }
        .sidebar {
            background: #fff;
            padding: 1.5rem;
            border-radius: 15px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        h1 {
            font-size: 2.8rem;
            color: #2c3e50;
            margin-bottom: 1.5rem;
            line-height: 1.3;
            border-left: 6px solid #e74c3c;
            padding-left: 20px;
        }
        h2 {
            font-size: 2rem;
            color: #34495e;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 8px;
            border-bottom: 2px dashed #bdc3c7;
        }
        h3 {
            font-size: 1.6rem;
            color: #16a085;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #8e44ad;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .lead {
            font-size: 1.3rem;
            color: #2c3e50;
            font-weight: 500;
            background: #f8f9fa;
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 5px solid #f39c12;
        }
        .highlight {
            background: linear-gradient(120deg, #a1e3ff 0%, #a1e3ff 100%);
            padding: 0.2rem 0.4rem;
            border-radius: 3px;
            font-weight: 600;
        }
        b, strong { color: #2c3e50; }
        .emoji { font-size: 1.2em; margin-right: 5px; }
        .feature-img {
            width: 100%;
            border-radius: 12px;
            box-shadow: 0 15px 25px rgba(0,0,0,0.1);
            margin: 2rem auto;
            border: 5px solid #fff;
            outline: 1px solid #eee;
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #7f8c8d;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .links-box {
            background: #e8f4fc;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        .links-box h3 { color: #2c3e50; margin-top: 0; }
        .links-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            list-style: none;
        }
        .links-list a {
            display: block;
            padding: 12px 15px;
            background: #fff;
            border-radius: 6px;
            border-left: 4px solid #3498db;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .links-list a:hover {
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(52, 152, 219, 0.2);
            border-left-color: #e74c3c;
        }
        .user-feedback {
            background: #f8f9fa;
            padding: 2rem;
            border-radius: 12px;
            margin: 3rem 0;
            border: 1px solid #e9ecef;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }
        .feedback-form h3 { margin-top: 0; }
        .form-group { margin-bottom: 1.2rem; }
        .form-label { display: block; margin-bottom: 0.5rem; font-weight: 600; color: #495057; }
        .form-input, .form-textarea {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ced4da;
            border-radius: 6px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-input:focus, .form-textarea:focus {
            border-color: #80bdff;
            outline: 0;
            box-shadow: 0 0 0 0.2rem rgba(0,123,255,0.25);
        }
        .form-textarea { min-height: 120px; resize: vertical; }
        .rating-stars {
            display: flex;
            gap: 5px;
            direction: rtl;
        }
        .rating-stars input { display: none; }
        .rating-stars label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.3s;
        }
        .rating-stars input:checked ~ label,
        .rating-stars label:hover,
        .rating-stars label:hover ~ label { color: #f39c12; }
        .submit-btn {
            background: #27ae60;
            color: white;
            border: none;
            padding: 14px 28px;
            border-radius: 6px;
            font-size: 1.1rem;
            cursor: pointer;
            transition: background 0.3s;
        }
        .submit-btn:hover { background: #219653; }
        .widget {
            margin-bottom: 2.5rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px solid #eee;
        }
        .widget:last-child { border-bottom: none; }
        .widget-title {
            font-size: 1.4rem;
            color: #2c3e50;
            margin-bottom: 1rem;
            padding-bottom: 8px;
            border-bottom: 2px solid #f39c12;
        }
        .update-time {
            font-size: 0.95rem;
            color: #7f8c8d;
            background: #f8f9fa;
            padding: 1rem;
            border-radius: 6px;
            text-align: center;
        }
        .update-time i { color: #e74c3c; margin-right: 8px; }
        .site-footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
            border-radius: 15px 15px 0 0;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-logo { font-size: 1.8rem; font-weight: 700; color: #f39c12; }
        .footer-links h4 { color: #f39c12; margin-bottom: 1.2rem; }
        .footer-links ul { list-style: none; }
        .footer-links li { margin-bottom: 0.8rem; }
        .footer-links a { color: #bdc3c7; }
        .footer-links a:hover { color: #f39c12; padding-left: 5px; }
        friend-link {
            display: inline-block;
            background: #34495e;
            color: #ecf0f1;
            padding: 8px 15px;
            border-radius: 4px;
            margin-right: 10px;
            margin-bottom: 10px;
            transition: all 0.3s;
        }
        friend-link:hover {
            background: #f39c12;
            color: #2c3e50;
            transform: scale(1.05);
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #34495e;
            color: #95a5a6;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-container { flex-direction: column; align-items: flex-start; }
            .main-nav { width: 100%; margin-top: 1rem; display: none; }
            .main-nav.active { display: block; }
            .main-nav ul { flex-direction: column; gap: 0.5rem; }
            .main-nav a { display: block; padding: 12px; }
            .hamburger { display: block; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            .content-area, .sidebar { padding: 1.5rem; }
            .feedback-grid { grid-template-columns: 1fr; }
            .search-form { flex-direction: column; }
            .search-input { border-radius: 50px; margin-bottom: 10px; }
            .search-btn { border-radius: 50px; padding: 15px; }
        }