* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: #f4f7fb;
            color: #1a2a3a;
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: #c0392b;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #e74c3c;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #1a2a3a 0%, #2c3e50 100%);
            color: #fff;
            padding: 0 0 12px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 20px;
            max-width: 1200px;
            margin: 0 auto;
            width: 100%;
        }
        .my-logo {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #f1c40f;
            text-shadow: 0 2px 8px rgba(241, 196, 15, 0.3);
            transition: transform 0.2s;
        }
        .my-logo:hover {
            transform: scale(1.02);
            color: #f39c12;
            text-decoration: none;
        }
        .my-logo i {
            margin-right: 8px;
            color: #e74c3c;
        }
        .my-logo span {
            font-weight: 300;
            color: #bdc3c7;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        nav {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px 6px;
        }
        .nav-list {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 18px;
            padding: 0;
            margin: 0;
        }
        .nav-list li a {
            color: #ecf0f1;
            font-size: 0.9rem;
            font-weight: 500;
            padding: 4px 0;
            border-bottom: 2px solid transparent;
            transition: all 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .nav-list li a:hover {
            color: #f1c40f;
            border-bottom-color: #f1c40f;
            text-decoration: none;
        }
        .nav-list li a i {
            font-size: 0.8rem;
            opacity: 0.7;
        }
        .breadcrumb {
            background: #fff;
            padding: 10px 20px;
            font-size: 0.85rem;
            border-bottom: 1px solid #e0e6ed;
            max-width: 1200px;
            margin: 0 auto;
            width: 100%;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 10px;
            padding: 0;
            margin: 0;
        }
        .breadcrumb ol li {
            display: flex;
            align-items: center;
            gap: 6px;
            color: #7f8c8d;
        }
        .breadcrumb ol li+li::before {
            content: "›";
            color: #bdc3c7;
            font-size: 1.2rem;
            margin-right: 4px;
        }
        .breadcrumb ol li a {
            color: #2980b9;
        }
        .breadcrumb ol li a:hover {
            color: #c0392b;
        }
        .breadcrumb ol li:last-child {
            color: #2c3e50;
            font-weight: 600;
        }
        main {
            padding: 30px 0 50px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
        }
        @media(max-width:992px) {
            .content-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }
        article {
            background: #fff;
            border-radius: 16px;
            padding: 30px 32px;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
        }
        @media(max-width:576px) {
            article {
                padding: 20px 16px;
            }
        }
        article h1 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #1a2a3a;
            line-height: 1.2;
            margin-bottom: 6px;
        }
        article h1 i {
            color: #e74c3c;
            margin-right: 10px;
        }
        .last-updated {
            display: block;
            font-size: 0.85rem;
            color: #95a5a6;
            margin-bottom: 20px;
            border-bottom: 1px solid #ecf0f1;
            padding-bottom: 14px;
        }
        .last-updated i {
            margin-right: 6px;
        }
        article h2 {
            font-size: 1.65rem;
            font-weight: 700;
            color: #2c3e50;
            margin: 40px 0 14px 0;
            padding-bottom: 8px;
            border-bottom: 3px solid #e74c3c;
            display: inline-block;
        }
        article h3 {
            font-size: 1.3rem;
            font-weight: 600;
            color: #34495e;
            margin: 28px 0 10px 0;
        }
        article h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: #2c3e50;
            margin: 20px 0 8px 0;
        }
        article p {
            margin-bottom: 16px;
            color: #2c3e50;
            font-size: 1.02rem;
        }
        article p strong {
            color: #1a2a3a;
        }
        article ul,
        article ol {
            margin: 0 0 18px 24px;
            color: #2c3e50;
        }
        article li {
            margin-bottom: 6px;
        }
        .feature-img {
            border-radius: 12px;
            overflow: hidden;
            margin: 20px 0 24px;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
            background: #ecf0f1;
        }
        .feature-img img {
            width: 100%;
            height: auto;
            aspect-ratio: 1200/630;
            object-fit: cover;
        }
        .feature-img figcaption {
            padding: 10px 16px;
            font-size: 0.85rem;
            color: #7f8c8d;
            background: #f8f9fa;
            border-top: 1px solid #ecf0f1;
        }
        .feature-img figcaption i {
            margin-right: 6px;
        }
        .highlight-box {
            background: #fef9e7;
            border-left: 5px solid #f1c40f;
            padding: 16px 20px;
            border-radius: 8px;
            margin: 20px 0;
            font-size: 1rem;
        }
        .highlight-box strong {
            color: #c0392b;
        }
        .stat-table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0 24px;
            font-size: 0.95rem;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        .stat-table thead {
            background: #2c3e50;
            color: #fff;
        }
        .stat-table th {
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
        }
        .stat-table td {
            padding: 10px 16px;
            border-bottom: 1px solid #ecf0f1;
        }
        .stat-table tbody tr:hover {
            background: #f8f9fa;
        }
        .stat-table tbody tr:nth-child(even) {
            background: #fafbfc;
        }
        .btn {
            display: inline-block;
            background: #e74c3c;
            color: #fff;
            padding: 10px 24px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
        }
        .btn:hover {
            background: #c0392b;
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
        }
        .btn i {
            margin-right: 8px;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 24px 22px;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
        }
        .sidebar-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: #2c3e50;
            margin-bottom: 14px;
            border-bottom: 2px solid #ecf0f1;
            padding-bottom: 10px;
        }
        .sidebar-card h3 i {
            color: #e74c3c;
            margin-right: 8px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-card ul li {
            padding: 6px 0;
            border-bottom: 1px solid #f4f6f8;
        }
        .sidebar-card ul li:last-child {
            border-bottom: none;
        }
        .sidebar-card ul li a {
            color: #2980b9;
            font-size: 0.92rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card ul li a:hover {
            color: #c0392b;
        }
        .search-form {
            display: flex;
            gap: 8px;
            margin-top: 4px;
        }
        .search-form input {
            flex: 1;
            padding: 10px 14px;
            border: 2px solid #e0e6ed;
            border-radius: 8px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.2s;
        }
        .search-form input:focus {
            border-color: #e74c3c;
        }
        .search-form button {
            background: #2c3e50;
            color: #fff;
            border: none;
            border-radius: 8px;
            padding: 10px 18px;
            cursor: pointer;
            font-size: 1rem;
            transition: background 0.2s;
        }
        .search-form button:hover {
            background: #1a2a3a;
        }
        .rating-stars {
            display: flex;
            gap: 6px;
            font-size: 1.6rem;
            color: #dcdde1;
            cursor: pointer;
            margin: 10px 0 6px;
            flex-wrap: wrap;
        }
        .rating-stars i {
            transition: color 0.15s, transform 0.1s;
        }
        .rating-stars i:hover,
        .rating-stars i.active {
            color: #f1c40f;
            transform: scale(1.1);
        }
        .rating-stars i.selected {
            color: #f39c12;
        }
        .rating-result {
            font-size: 0.9rem;
            color: #7f8c8d;
            margin-top: 4px;
        }
        .comment-form textarea {
            width: 100%;
            padding: 12px 14px;
            border: 2px solid #e0e6ed;
            border-radius: 8px;
            font-size: 0.95rem;
            font-family: inherit;
            resize: vertical;
            min-height: 80px;
            outline: none;
            transition: border 0.2s;
            margin-bottom: 10px;
        }
        .comment-form textarea:focus {
            border-color: #e74c3c;
        }
        .comment-form .btn {
            width: 100%;
        }
        .comment-list {
            margin-top: 14px;
            max-height: 260px;
            overflow-y: auto;
        }
        .comment-item {
            background: #f8f9fa;
            padding: 12px 14px;
            border-radius: 8px;
            margin-bottom: 8px;
            font-size: 0.92rem;
            border-left: 3px solid #e74c3c;
        }
        .comment-item .meta {
            font-size: 0.78rem;
            color: #95a5a6;
            margin-top: 4px;
        }
        friend-link {
            display: block;
            padding: 30px 0 10px;
            border-top: 1px solid #ecf0f1;
            margin-top: 30px;
        }
        friend-link h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #2c3e50;
            margin-bottom: 14px;
        }
        friend-link ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 8px 20px;
        }
        friend-link ul li a {
            color: #2980b9;
            font-size: 0.9rem;
        }
        friend-link ul li a:hover {
            color: #c0392b;
        }
        footer {
            background: #1a2a3a;
            color: #bdc3c7;
            padding: 30px 20px;
            text-align: center;
            font-size: 0.9rem;
            border-top: 4px solid #e74c3c;
        }
        footer .copyright {
            max-width: 1200px;
            margin: 0 auto;
        }
        footer .copyright p {
            margin-bottom: 6px;
        }
        footer .copyright a {
            color: #f1c40f;
        }
        footer .copyright a:hover {
            color: #f39c12;
        }
        @media(max-width:768px) {
            .hamburger {
                display: block;
            }
            .nav-list {
                display: none;
                flex-direction: column;
                gap: 4px;
                padding: 10px 0 14px;
                width: 100%;
            }
            .nav-list.active {
                display: flex;
            }
            .nav-list li a {
                padding: 8px 0;
                border-bottom: none;
                font-size: 0.95rem;
            }
            .nav-list li a:hover {
                border-bottom: none;
                color: #f1c40f;
            }
            article h1 {
                font-size: 1.6rem;
            }
            article h2 {
                font-size: 1.35rem;
            }
            article h3 {
                font-size: 1.1rem;
            }
            .header-top {
                padding: 12px 16px;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .breadcrumb {
                padding: 8px 16px;
                font-size: 0.78rem;
            }
            .stat-table {
                font-size: 0.82rem;
            }
            .stat-table th,
            .stat-table td {
                padding: 8px 10px;
            }
            .sidebar-card {
                padding: 18px 16px;
            }
            .content-grid {
                gap: 20px;
            }
        }
        @media(max-width:480px) {
            article {
                padding: 16px 12px;
            }
            article h1 {
                font-size: 1.35rem;
            }
            .rating-stars {
                font-size: 1.4rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                width: 100%;
            }
        }
        html {
            scroll-behavior: smooth;
        }
        @media print {
            header,
            .breadcrumb,
            .sidebar,
            .search-form,
            .comment-form,
            .rating-stars,
            footer {
                display: none !important;
            }
            .content-grid {
                grid-template-columns: 1fr;
            }
            article {
                box-shadow: none;
                padding: 0;
            }
            body {
                background: #fff;
            }
        }
        .comment-list::-webkit-scrollbar {
            width: 5px;
        }
        .comment-list::-webkit-scrollbar-track {
            background: #ecf0f1;
            border-radius: 10px;
        }
        .comment-list::-webkit-scrollbar-thumb {
            background: #bdc3c7;
            border-radius: 10px;
        }