*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --primary: #1a2a3a;
            --secondary: #e67e22;
            --accent: #f39c12;
            --bg: #f8f9fa;
            --card-bg: #ffffff;
            --text: #2c3e50;
            --text-light: #6c7a89;
            --border: #dee2e6;
            --success: #27ae60;
            --gold: #f1c40f;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --radius: 16px;
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --max-width: 1120px;
            --header-bg: linear-gradient(135deg, #0f1a2e 0%, #1a2a3a 100%);
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.8;
            padding-top: 70px;
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: color 0.25s;
        }
        a:hover {
            color: #d35400;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: var(--header-bg);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
            padding: 0 20px;
        }
        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            background: linear-gradient(135deg, #f39c12, #e67e22);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            -webkit-text-fill-color: initial;
            color: var(--gold);
            font-size: 1.4rem;
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 8px;
            align-items: center;
        }
        .nav-list li a {
            color: #e0e0e0;
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all 0.25s;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list li a:hover,
        .nav-list li a.active {
            background: rgba(230, 126, 34, 0.2);
            color: #f39c12;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px;
            z-index: 1100;
        }
        .hamburger span {
            width: 28px;
            height: 3px;
            background: #f0f0f0;
            border-radius: 4px;
            transition: 0.3s;
        }
        .hamburger.active span:nth-child(1) {
            transform: translateY(8px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-8px) rotate(-45deg);
        }
        .breadcrumb {
            background: #fff;
            padding: 14px 0 8px;
            font-size: 0.85rem;
            border-bottom: 1px solid var(--border);
            margin-bottom: 32px;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .breadcrumb ol li a {
            color: var(--text-light);
        }
        .breadcrumb ol li+li::before {
            content: "›";
            margin-right: 12px;
            color: #aaa;
        }
        .breadcrumb ol li:last-child {
            color: var(--secondary);
            font-weight: 600;
        }
        .main-content {
            padding: 20px 0 60px;
        }
        .article-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        @media(max-width:900px) {
            .article-wrapper {
                grid-template-columns: 1fr;
            }
        }
        .article-body h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.25;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .article-body h1 i {
            color: var(--gold);
        }
        .meta-line {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 24px;
            color: var(--text-light);
            font-size: 0.9rem;
            margin-bottom: 24px;
            border-bottom: 1px solid var(--border);
            padding-bottom: 16px;
        }
        .meta-line i {
            margin-right: 6px;
        }
        .last-updated {
            background: #fef9e7;
            padding: 4px 14px;
            border-radius: 30px;
            font-weight: 600;
            color: #b7950b;
        }
        .article-body h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
            margin: 40px 0 16px;
            border-left: 5px solid var(--secondary);
            padding-left: 16px;
        }
        .article-body h3 {
            font-size: 1.35rem;
            font-weight: 600;
            color: #1a2a3a;
            margin: 28px 0 12px;
        }
        .article-body h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: #2c3e50;
            margin: 20px 0 8px;
        }
        .article-body p {
            margin-bottom: 16px;
            color: #3d4a5a;
        }
        .article-body strong {
            color: var(--primary);
        }
        .article-body ul,
        .article-body ol {
            margin: 12px 0 20px 24px;
            color: #3d4a5a;
        }
        .article-body li {
            margin-bottom: 6px;
        }
        .article-body .code-box {
            background: #1a2a3a;
            color: #f1c40f;
            padding: 14px 20px;
            border-radius: 10px;
            font-family: 'Courier New', monospace;
            font-size: 0.95rem;
            overflow-x: auto;
            margin: 16px 0 24px;
            white-space: pre-wrap;
            word-break: break-all;
        }
        .article-body .highlight-card {
            background: linear-gradient(135deg, #fef9e7, #fdebd0);
            border-radius: var(--radius);
            padding: 20px 24px;
            margin: 20px 0 28px;
            border-left: 6px solid var(--secondary);
        }
        .article-body .highlight-card i {
            color: var(--secondary);
            margin-right: 8px;
        }
        .article-body .feature-img {
            margin: 24px 0 28px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .article-body .feature-img img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .article-body .feature-img figcaption {
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-light);
            margin-top: 8px;
            font-style: italic;
        }
        .sidebar {
            position: sticky;
            top: 90px;
            align-self: start;
        }
        .sidebar-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 20px;
            box-shadow: var(--shadow);
            margin-bottom: 24px;
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            margin-bottom: 12px;
            border-bottom: 2px solid var(--secondary);
            padding-bottom: 8px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-card ul li {
            padding: 6px 0;
            border-bottom: 1px solid #f0f0f0;
        }
        .sidebar-card ul li a {
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card ul li a i {
            color: var(--secondary);
            font-size: 0.8rem;
        }
        .search-section {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow);
            margin: 32px 0;
        }
        .search-section form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .search-section input[type="text"] {
            flex: 1;
            min-width: 200px;
            padding: 14px 20px;
            border: 2px solid var(--border);
            border-radius: 50px;
            font-size: 1rem;
            outline: none;
            transition: 0.3s;
        }
        .search-section input[type="text"]:focus {
            border-color: var(--secondary);
        }
        .search-section button {
            background: var(--secondary);
            color: #fff;
            border: none;
            padding: 14px 32px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: 0.3s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-section button:hover {
            background: #d35400;
            transform: scale(1.02);
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin: 40px 0;
        }
        @media(max-width:700px) {
            .interaction-grid {
                grid-template-columns: 1fr;
            }
        }
        .interaction-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow);
        }
        .interaction-card h3 {
            font-size: 1.2rem;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .interaction-card textarea,
        .interaction-card input[type="text"],
        .interaction-card input[type="number"] {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid var(--border);
            border-radius: 10px;
            font-size: 0.95rem;
            outline: none;
            transition: 0.3s;
            font-family: var(--font);
            resize: vertical;
        }
        .interaction-card textarea:focus,
        .interaction-card input:focus {
            border-color: var(--secondary);
        }
        .interaction-card textarea {
            min-height: 90px;
            margin-bottom: 12px;
        }
        .interaction-card .btn-submit {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            transition: 0.3s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .interaction-card .btn-submit:hover {
            background: #2c3e50;
            transform: scale(1.02);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            gap: 4px;
            justify-content: flex-end;
            margin: 12px 0 16px;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: 0.2s;
        }
        .star-rating input:checked~label,
        .star-rating label:hover,
        .star-rating label:hover~label {
            color: var(--gold);
        }
        .site-footer {
            background: var(--primary);
            color: #ccc;
            padding: 40px 0 24px;
            margin-top: 60px;
        }
        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        @media(max-width:600px) {
            .footer-inner {
                grid-template-columns: 1fr;
            }
        }
        .footer-inner h4 {
            color: #f0f0f0;
            font-size: 1.1rem;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-inner ul {
            list-style: none;
            padding: 0;
        }
        .footer-inner ul li {
            padding: 4px 0;
        }
        .footer-inner ul li a {
            color: #aaa;
            font-size: 0.9rem;
        }
        .footer-inner ul li a:hover {
            color: var(--gold);
        }
        .footer-bottom {
            text-align: center;
            padding-top: 24px;
            margin-top: 24px;
            border-top: 1px solid #2a3a4a;
            font-size: 0.85rem;
            color: #888;
            max-width: var(--max-width);
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .footer-bottom .copyright {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 8px 20px;
        }
        friend-link {
            display: block;
            margin-top: 12px;
            font-size: 0.9rem;
        }
        friend-link a {
            color: var(--gold);
        }
        friend-link a:hover {
            text-decoration: underline;
        }
        @media(max-width:768px) {
            .hamburger {
                display: flex;
            }
            .nav-list {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: var(--primary);
                flex-direction: column;
                padding: 80px 24px 30px;
                transition: right 0.35s ease;
                box-shadow: -10px 0 30px rgba(0, 0, 0, 0.3);
                gap: 4px;
                align-items: stretch;
                overflow-y: auto;
            }
            .nav-list.open {
                right: 0;
            }
            .nav-list li a {
                padding: 12px 16px;
                font-size: 1rem;
                border-radius: 10px;
            }
            .article-body h1 {
                font-size: 1.8rem;
            }
            .article-body h2 {
                font-size: 1.4rem;
            }
            .article-body h3 {
                font-size: 1.15rem;
            }
            .meta-line {
                font-size: 0.8rem;
                gap: 10px;
            }
            .breadcrumb ol {
                font-size: 0.8rem;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .sidebar {
                position: static;
            }
        }
        @media(max-width:480px) {
            .article-body h1 {
                font-size: 1.5rem;
            }
            .container {
                padding: 0 14px;
            }
            .search-section form {
                flex-direction: column;
            }
            .search-section button {
                justify-content: center;
            }
            .interaction-card .btn-submit {
                width: 100%;
                justify-content: center;
            }
        }
        .text-gold {
            color: var(--gold);
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-wrap {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
        }
        .mt-20 {
            margin-top: 20px;
        }
        .mb-20 {
            margin-bottom: 20px;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 20px 0 24px;
        }
        .table-wrap table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.92rem;
        }
        .table-wrap th {
            background: var(--primary);
            color: #fff;
            padding: 10px 14px;
            text-align: left;
        }
        .table-wrap td {
            padding: 10px 14px;
            border-bottom: 1px solid var(--border);
        }
        .table-wrap tr:hover td {
            background: #fef9e7;
        }
        .badge {
            display: inline-block;
            background: var(--success);
            color: #fff;
            padding: 2px 12px;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 700;
        }
        .badge.expired {
            background: #e74c3c;
        }
        .badge.new {
            background: #3498db;
        }