*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            background: #f5f7fa;
            color: #1e1e2a;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 10px;
        }
        a {
            color: #c0392b;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #e74c3c;
            text-decoration: underline;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin: 0.75rem 0;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: #1a1a2e;
            margin-top: 1.8rem;
            margin-bottom: 0.6rem;
        }
        h1 {
            font-size: 2.2rem;
            border-left: 6px solid #c0392b;
            padding-left: 1rem;
        }
        h2 {
            font-size: 1.7rem;
            border-bottom: 2px solid #e0e0e0;
            padding-bottom: 0.3rem;
        }
        h3 {
            font-size: 1.3rem;
        }
        h4 {
            font-size: 1.1rem;
            font-weight: 600;
        }
        p {
            margin: 0.75rem 0;
            text-align: justify;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: linear-gradient(135deg, #1a1a2e 0%, #2c2c44 100%);
            color: #fff;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: 1px;
            color: #fff;
            text-transform: uppercase;
            background: linear-gradient(135deg, #e74c3c, #f39c12);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo i {
            -webkit-text-fill-color: #e74c3c;
            font-size: 1.6rem;
        }
        .my-logo:hover {
            opacity: 0.9;
            text-decoration: none;
        }
        .my-logo small {
            font-size: 0.7rem;
            -webkit-text-fill-color: #aaa;
            display: block;
            font-weight: 400;
            letter-spacing: 0.5px;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 1.2rem;
            flex-wrap: wrap;
        }
        .nav-menu a {
            color: #ddd;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.4rem 0.2rem;
            border-bottom: 2px solid transparent;
            transition: all 0.25s;
            text-decoration: none;
        }
        .nav-menu a:hover {
            color: #fff;
            border-bottom-color: #e74c3c;
            text-decoration: none;
        }
        .nav-menu a i {
            margin-right: 0.3rem;
        }
        .hamburger {
            display: none;
            background: transparent;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.2rem 0.5rem;
            transition: transform 0.2s;
        }
        .hamburger:hover {
            transform: scale(1.1);
        }
        .nav-toggle {
            display: none;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding: 1rem 0 0.5rem 0;
                gap: 0.6rem;
                border-top: 1px solid #444;
                margin-top: 0.6rem;
            }
            .nav-menu a {
                width: 100%;
                padding: 0.5rem 0;
                border-bottom: 1px solid #333;
            }
            .nav-toggle:checked~.nav-menu {
                display: flex;
            }
        }
        .breadcrumb {
            background: #eceef2;
            padding: 0.6rem 0;
            font-size: 0.85rem;
            border-bottom: 1px solid #dcdde1;
        }
        .breadcrumb ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
            padding: 0;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.5rem;
            color: #888;
        }
        .breadcrumb a {
            color: #2c3e50;
        }
        .breadcrumb a:hover {
            color: #c0392b;
        }
        .breadcrumb .current {
            color: #7f8c8d;
            font-weight: 600;
        }
        .main-content {
            padding: 2rem 0 3rem;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-body {
            background: #fff;
            padding: 2rem 2.2rem;
            border-radius: 14px;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
        }
        @media (max-width: 600px) {
            .article-body {
                padding: 1.2rem;
            }
            h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.3rem;
            }
            h3 {
                font-size: 1.1rem;
            }
        }
        .hero-img {
            margin: 1.5rem 0 2rem;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.1);
        }
        .hero-img img {
            width: 100%;
            object-fit: cover;
        }
        .update-badge {
            display: inline-block;
            background: #2c3e50;
            color: #fff;
            padding: 0.3rem 1rem;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }
        .update-badge i {
            margin-right: 0.4rem;
        }
        .highlight-box {
            background: #fef9e7;
            border-left: 5px solid #f39c12;
            padding: 1rem 1.5rem;
            border-radius: 8px;
            margin: 1.5rem 0;
        }
        .highlight-box p {
            margin: 0.2rem 0;
        }
        .tip-box {
            background: #eafaf1;
            border-left: 5px solid #27ae60;
            padding: 1rem 1.5rem;
            border-radius: 8px;
            margin: 1.5rem 0;
        }
        .tip-box p {
            margin: 0.2rem 0;
        }
        .warning-box {
            background: #fdedec;
            border-left: 5px solid #e74c3c;
            padding: 1rem 1.5rem;
            border-radius: 8px;
            margin: 1.5rem 0;
        }
        .stat-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            font-size: 0.95rem;
        }
        .stat-table th {
            background: #2c3e50;
            color: #fff;
            padding: 0.65rem 1rem;
            text-align: left;
            font-weight: 600;
        }
        .stat-table td {
            padding: 0.6rem 1rem;
            border-bottom: 1px solid #e0e0e0;
        }
        .stat-table tr:nth-child(even) {
            background: #f8f9fa;
        }
        .stat-table tr:hover {
            background: #eef2f7;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 1.8rem;
        }
        .sidebar-card {
            background: #fff;
            padding: 1.4rem 1.6rem;
            border-radius: 14px;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
        }
        .sidebar-card h3 {
            margin-top: 0;
            font-size: 1.1rem;
            border-bottom: 2px solid #eee;
            padding-bottom: 0.5rem;
            margin-bottom: 0.8rem;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-card ul li {
            padding: 0.4rem 0;
            border-bottom: 1px solid #f0f0f0;
        }
        .sidebar-card ul li a {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 500;
        }
        .sidebar-card ul li a i {
            color: #c0392b;
            width: 1.2rem;
        }
        .search-form {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0 0.5rem;
        }
        .search-form input {
            flex: 1;
            padding: 0.6rem 1rem;
            border: 2px solid #ddd;
            border-radius: 30px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.25s;
        }
        .search-form input:focus {
            border-color: #c0392b;
        }
        .search-form button {
            background: #c0392b;
            color: #fff;
            border: none;
            padding: 0 1.2rem;
            border-radius: 30px;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.25s;
        }
        .search-form button:hover {
            background: #e74c3c;
        }
        .comment-section,
        .rating-section {
            background: #fff;
            padding: 1.8rem 2rem;
            border-radius: 14px;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
            margin-top: 2rem;
        }
        .comment-section h2,
        .rating-section h2 {
            margin-top: 0;
        }
        .comment-form textarea,
        .comment-form input,
        .rating-form select,
        .rating-form input {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.25s;
            font-family: inherit;
            margin-bottom: 0.8rem;
        }
        .comment-form textarea:focus,
        .comment-form input:focus,
        .rating-form select:focus,
        .rating-form input:focus {
            border-color: #c0392b;
        }
        .comment-form textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            background: #c0392b;
            color: #fff;
            border: none;
            padding: 0.7rem 2rem;
            border-radius: 30px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn:hover {
            background: #e74c3c;
            transform: translateY(-2px);
        }
        .btn-secondary {
            background: #2c3e50;
        }
        .btn-secondary:hover {
            background: #34495e;
        }
        .rating-stars {
            display: flex;
            gap: 0.3rem;
            font-size: 1.8rem;
            color: #f1c40f;
            margin: 0.5rem 0;
        }
        .rating-stars i {
            cursor: pointer;
            transition: transform 0.15s;
        }
        .rating-stars i:hover {
            transform: scale(1.2);
        }
        .site-footer {
            background: #1a1a2e;
            color: #ccc;
            padding: 2.5rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
        }
        .footer-inner h4 {
            color: #fff;
            margin-top: 0;
            font-size: 1.1rem;
            border-bottom: 2px solid #333;
            padding-bottom: 0.4rem;
        }
        .footer-inner a {
            color: #bbb;
        }
        .footer-inner a:hover {
            color: #e74c3c;
        }
        .footer-inner ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-inner ul li {
            padding: 0.25rem 0;
        }
        friend-link {
            display: block;
            margin-top: 1.2rem;
            padding-top: 1.2rem;
            border-top: 1px solid #333;
            font-size: 0.9rem;
        }
        friend-link a {
            display: inline-block;
            margin: 0.2rem 0.8rem 0.2rem 0;
            padding: 0.2rem 0.6rem;
            background: #2c2c44;
            border-radius: 20px;
            font-size: 0.85rem;
            color: #ddd;
            transition: background 0.2s;
        }
        friend-link a:hover {
            background: #c0392b;
            color: #fff;
            text-decoration: none;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            margin-top: 1.5rem;
            border-top: 1px solid #333;
            font-size: 0.85rem;
            color: #888;
        }
        .copyright strong {
            color: #ddd;
        }
        .text-muted {
            color: #7f8c8d;
            font-size: 0.9rem;
        }
        .mt-2 {
            margin-top: 1.5rem;
        }
        .mb-1 {
            margin-bottom: 0.8rem;
        }
        .flex-between {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.6rem;
        }
        @media (max-width: 480px) {
            .header-inner {
                flex-wrap: nowrap;
            }
            .my-logo {
                font-size: 1.3rem;
            }
            .my-logo small {
                font-size: 0.6rem;
            }
            .article-body {
                padding: 0.8rem;
            }
            .comment-section,
            .rating-section {
                padding: 1rem;
            }
            .stat-table {
                font-size: 0.8rem;
            }
            .stat-table th,
            .stat-table td {
                padding: 0.4rem 0.5rem;
            }
        }