*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f5f7fc;
            color: #1a1a2e;
            line-height: 1.75;
            padding: 0;
            margin: 0;
        }
        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;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin-bottom: 1.2rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: #0f0f1a;
            margin-top: 0;
        }
        p {
            margin-bottom: 1.2rem;
        }
        strong {
            color: #c0392b;
            font-weight: 700;
        }
        .container {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0f0f1a 0%, #1a1a2e 100%);
            padding: 0 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 20px;
            max-width: 1140px;
            margin: 0 auto;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 900;
            color: #f1c40f;
            text-transform: uppercase;
            letter-spacing: 2px;
            text-shadow: 0 0 20px rgba(241, 196, 15, 0.3);
            transition: transform 0.3s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            font-size: 2rem;
            color: #e74c3c;
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
            color: #f1c40f;
        }
        .my-logo small {
            font-size: 0.7rem;
            color: #aaa;
            letter-spacing: 1px;
            font-weight: 400;
            display: block;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 12px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #e0e0e0;
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all 0.25s;
            white-space: nowrap;
        }
        .main-nav a:hover {
            background: rgba(241, 196, 15, 0.15);
            color: #f1c40f;
            text-decoration: none;
        }
        .main-nav a.active {
            background: #c0392b;
            color: #fff;
        }
        .breadcrumb-wrap {
            background: #fff;
            border-bottom: 1px solid #e8ecf4;
            padding: 10px 0;
            font-size: 0.85rem;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin: 0 8px;
            color: #999;
            font-size: 1.2rem;
        }
        .breadcrumb a {
            color: #555;
        }
        .breadcrumb a:hover {
            color: #c0392b;
        }
        .breadcrumb .current {
            color: #c0392b;
            font-weight: 600;
        }
        .hero {
            background: linear-gradient(145deg, #1a1a2e, #16213e);
            padding: 48px 0 40px;
            color: #fff;
            text-align: center;
            border-bottom: 4px solid #f1c40f;
        }
        .hero h1 {
            font-size: 2.8rem;
            color: #f1c40f;
            margin-bottom: 12px;
            text-shadow: 0 2px 20px rgba(241, 196, 15, 0.2);
        }
        .hero p {
            font-size: 1.15rem;
            max-width: 750px;
            margin: 0 auto 16px;
            color: #cfd8e6;
        }
        .hero-meta {
            display: flex;
            justify-content: center;
            gap: 30px;
            flex-wrap: wrap;
            font-size: 0.95rem;
            color: #aab;
            margin-top: 16px;
        }
        .hero-meta i {
            margin-right: 6px;
            color: #f1c40f;
        }
        .last-updated {
            background: rgba(241, 196, 15, 0.12);
            padding: 4px 16px;
            border-radius: 30px;
            color: #f1c40f;
            font-weight: 600;
        }
        .content-area {
            padding: 40px 0 50px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
        }
        .main-content {
            background: #fff;
            border-radius: 20px;
            padding: 36px 40px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 24px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
            margin-bottom: 24px;
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            border-bottom: 2px solid #f1c40f;
            padding-bottom: 8px;
            margin-bottom: 14px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-card li {
            padding: 6px 0;
            border-bottom: 1px solid #f0f0f5;
        }
        .sidebar-card li:last-child {
            border-bottom: none;
        }
        .sidebar-card a {
            color: #2c3e50;
            font-weight: 500;
        }
        .sidebar-card a:hover {
            color: #c0392b;
        }
        .code-table-wrap {
            overflow-x: auto;
            margin: 24px 0 32px;
            border-radius: 12px;
            border: 1px solid #e8ecf4;
        }
        .code-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
            min-width: 520px;
        }
        .code-table th {
            background: #1a1a2e;
            color: #f1c40f;
            padding: 14px 18px;
            text-align: left;
            font-weight: 600;
        }
        .code-table td {
            padding: 12px 18px;
            border-bottom: 1px solid #eee;
        }
        .code-table tr:last-child td {
            border-bottom: none;
        }
        .code-table tr:hover td {
            background: #faf8f0;
        }
        .code-badge {
            background: #27ae60;
            color: #fff;
            padding: 2px 12px;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 700;
            display: inline-block;
        }
        .code-badge.expired {
            background: #888;
        }
        .code-badge.new {
            background: #e74c3c;
            animation: pulse-badge 1.5s infinite;
        }
        @keyframes pulse-badge {
            0%,
            100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.05);
            }
        }
        .copy-btn {
            background: #f1c40f;
            border: none;
            padding: 4px 14px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.8rem;
            cursor: pointer;
            transition: background 0.2s;
            color: #1a1a2e;
        }
        .copy-btn:hover {
            background: #e0b50e;
        }
        .search-box {
            display: flex;
            gap: 10px;
            margin: 24px 0 30px;
            flex-wrap: wrap;
        }
        .search-box input {
            flex: 1;
            min-width: 180px;
            padding: 14px 20px;
            border: 2px solid #ddd;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: border 0.3s;
            background: #f9fafc;
        }
        .search-box input:focus {
            border-color: #c0392b;
        }
        .search-box button {
            padding: 14px 32px;
            background: #c0392b;
            color: #fff;
            border: none;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-box button:hover {
            background: #a93226;
        }
        .comment-section,
        .rating-section {
            margin-top: 40px;
            padding-top: 32px;
            border-top: 2px solid #e8ecf4;
        }
        .comment-section h3,
        .rating-section h3 {
            font-size: 1.4rem;
            margin-bottom: 18px;
        }
        .comment-form textarea,
        .comment-form input {
            width: 100%;
            padding: 14px 18px;
            border: 2px solid #ddd;
            border-radius: 12px;
            font-size: 1rem;
            font-family: inherit;
            margin-bottom: 14px;
            resize: vertical;
            transition: border 0.3s;
            background: #f9fafc;
        }
        .comment-form textarea:focus,
        .comment-form input:focus {
            border-color: #c0392b;
            outline: none;
        }
        .comment-form textarea {
            min-height: 110px;
        }
        .comment-form button,
        .rating-form button {
            padding: 12px 32px;
            background: #1a1a2e;
            color: #fff;
            border: none;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s;
        }
        .comment-form button:hover,
        .rating-form button:hover {
            background: #c0392b;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 6px;
            font-size: 2rem;
            margin-bottom: 16px;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            cursor: pointer;
            color: #ddd;
            transition: color 0.2s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f1c40f;
        }
        .featured-image {
            margin: 28px 0 32px;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
        }
        .featured-image img {
            width: 100%;
            height: auto;
            display: block;
        }
        .featured-image figcaption {
            padding: 12px 18px;
            background: #f5f7fc;
            font-size: 0.85rem;
            color: #555;
            text-align: center;
            border-top: 1px solid #e8ecf4;
        }
        .site-footer {
            background: #0f0f1a;
            color: #b0b0c8;
            padding: 40px 0 20px;
            border-top: 4px solid #c0392b;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 20px 30px;
        }
        .footer-inner h4 {
            color: #f1c40f;
            font-size: 1.1rem;
            margin-bottom: 14px;
        }
        .footer-inner a {
            color: #b0b0c8;
        }
        .footer-inner a:hover {
            color: #f1c40f;
            text-decoration: underline;
        }
        .footer-inner ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-inner li {
            padding: 4px 0;
        }
        friend-link {
            display: block;
            margin-top: 8px;
        }
        friend-link a {
            display: inline-block;
            margin-right: 16px;
            padding: 4px 0;
        }
        .copyright {
            text-align: center;
            padding: 20px 20px 0;
            border-top: 1px solid #2a2a40;
            font-size: 0.85rem;
            color: #777;
            max-width: 1140px;
            margin: 0 auto;
        }
        .copyright strong {
            color: #aaa;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                order: 2;
            }
            .main-content {
                order: 1;
                padding: 28px 24px;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding: 16px 0 8px;
                gap: 4px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 16px;
                border-radius: 8px;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .hero-meta {
                flex-direction: column;
                gap: 8px;
            }
            .main-content {
                padding: 20px 16px;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .code-table {
                font-size: 0.85rem;
            }
            .code-table th,
            .code-table td {
                padding: 10px 12px;
            }
            .search-box button {
                padding: 12px 20px;
                font-size: 0.9rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .my-logo i {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 480px) {
            .hero h1 {
                font-size: 1.6rem;
            }
            .container {
                padding: 0 12px;
            }
            .main-content {
                padding: 16px 12px;
            }
            .star-rating {
                font-size: 1.6rem;
            }
        }
        .text-muted {
            color: #777;
            font-size: 0.9rem;
        }
        .mt-1 {
            margin-top: 8px;
        }
        .mt-2 {
            margin-top: 16px;
        }
        .mt-3 {
            margin-top: 24px;
        }
        .mb-2 {
            margin-bottom: 16px;
        }
        .mb-3 {
            margin-bottom: 24px;
        }
        .tag {
            display: inline-block;
            background: #f0f0f5;
            padding: 2px 12px;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 600;
            color: #555;
            margin-right: 4px;
        }
        .tag.legend {
            background: #f1c40f;
            color: #1a1a2e;
        }
        .tag.pro {
            background: #3498db;
            color: #fff;
        }
        .highlight-box {
            background: #fef9e7;
            border-left: 4px solid #f1c40f;
            padding: 18px 22px;
            border-radius: 0 12px 12px 0;
            margin: 20px 0;
        }
        .highlight-box strong {
            color: #c0392b;
        }
        .tip-icon {
            color: #f1c40f;
            margin-right: 6px;
        }