*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --primary: #1a2a4a;
            --primary-light: #2c4a7a;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --accent-dark: #d97706;
            --bg: #f8f8fc;
            --card-bg: #ffffff;
            --text: #1e293b;
            --text-light: #475569;
            --border: #e2e8f0;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            --radius: 16px;
            --radius-sm: 8px;
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-bg: #0f1a2e;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color 0.2s, border-color 0.2s;
        }
        a:hover {
            color: var(--accent-dark);
        }
        .skip-link {
            position: absolute;
            top: -100%;
            left: 16px;
            padding: 12px 20px;
            background: var(--accent);
            color: #000;
            border-radius: 0 0 var(--radius-sm) var(--radius-sm);
            z-index: 9999;
            font-weight: 700;
            transition: top 0.3s;
        }
        .skip-link:focus {
            top: 0;
        }
        .site-header {
            background: var(--header-bg);
            color: #fff;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 16px;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }
        .my-logo i {
            color: var(--accent);
            font-size: 1.4rem;
        }
        .my-logo span {
            color: var(--accent);
        }
        .my-logo:hover {
            color: var(--accent-light);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            font-size: 1.3rem;
            padding: 6px 12px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: border-color 0.2s;
        }
        .nav-toggle:hover {
            border-color: var(--accent);
        }
        .nav-toggle:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .nav-menu a {
            color: rgba(255, 255, 255, 0.85);
            padding: 6px 14px;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.2s, color 0.2s;
            white-space: nowrap;
        }
        .nav-menu a:hover,
        .nav-menu a.active {
            background: rgba(255, 255, 255, 0.12);
            color: var(--accent-light);
        }
        .breadcrumb-wrap {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 12px 20px 0;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px 10px;
            font-size: 0.85rem;
            color: var(--text-light);
            list-style: none;
            padding: 8px 0;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .breadcrumb li+li::before {
            content: "\f105";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            color: #94a3b8;
            font-size: 0.75rem;
        }
        .breadcrumb a {
            color: var(--primary-light);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .current {
            color: var(--text);
            font-weight: 600;
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 24px 20px 60px;
            flex: 1;
        }
        article {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 36px 32px 48px;
        }
        h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.25;
            color: var(--primary);
            margin-bottom: 8px;
        }
        h1 i {
            color: var(--accent);
            margin-right: 10px;
        }
        .last-updated {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 28px;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--border);
        }
        .last-updated i {
            color: var(--accent);
        }
        h2 {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--primary);
            margin-top: 44px;
            margin-bottom: 16px;
            padding-bottom: 6px;
            border-bottom: 3px solid var(--accent);
            display: inline-block;
        }
        h2 i {
            color: var(--accent);
            margin-right: 8px;
        }
        h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary-light);
            margin-top: 28px;
            margin-bottom: 10px;
        }
        h3 i {
            color: var(--accent);
            margin-right: 6px;
            font-size: 0.9em;
        }
        h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text);
            margin-top: 20px;
            margin-bottom: 8px;
        }
        h4 i {
            color: var(--accent);
            margin-right: 6px;
        }
        p {
            margin-bottom: 16px;
            color: var(--text);
        }
        .highlight-box {
            background: #fef9ec;
            border-left: 4px solid var(--accent);
            padding: 16px 20px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 20px 0;
        }
        .highlight-box strong {
            color: var(--accent-dark);
        }
        ul,
        ol {
            margin: 12px 0 16px 24px;
            color: var(--text);
        }
        li {
            margin-bottom: 6px;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            margin: 24px 0;
        }
        .feature-card {
            background: var(--bg);
            border-radius: var(--radius-sm);
            padding: 20px 16px;
            text-align: center;
            border: 1px solid var(--border);
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
        }
        .feature-card i {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 10px;
        }
        .feature-card h4 {
            margin-top: 0;
            font-size: 1rem;
        }
        .feature-card p {
            font-size: 0.9rem;
            margin-bottom: 0;
        }
        .content-img-wrap {
            margin: 28px 0;
            border-radius: var(--radius-sm);
            overflow: hidden;
            box-shadow: var(--shadow);
            background: #f1f5f9;
        }
        .content-img-wrap img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .content-img-wrap figcaption {
            padding: 10px 16px;
            font-size: 0.85rem;
            color: var(--text-light);
            background: #f8fafc;
            border-top: 1px solid var(--border);
        }
        .resource-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 10px;
            margin: 16px 0 20px;
            padding: 0;
            list-style: none;
        }
        .resource-links li {
            margin: 0;
        }
        .resource-links a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 14px;
            background: var(--bg);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            font-size: 0.9rem;
            transition: background 0.2s, border-color 0.2s;
        }
        .resource-links a:hover {
            background: #fef9ec;
            border-color: var(--accent);
        }
        .resource-links a i {
            color: var(--accent);
            font-size: 0.85rem;
        }
        .search-section {
            margin: 32px 0 24px;
            padding: 24px 20px;
            background: linear-gradient(135deg, #f8fafc, #eef2f7);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
        }
        .search-section h3 {
            margin-top: 0;
        }
        .search-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-top: 12px;
        }
        .search-form input {
            flex: 1;
            min-width: 180px;
            padding: 12px 18px;
            border: 2px solid var(--border);
            border-radius: 40px;
            font-size: 0.95rem;
            outline: none;
            transition: border-color 0.2s;
        }
        .search-form input:focus {
            border-color: var(--accent);
        }
        .search-form button {
            padding: 12px 28px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            background: var(--primary-light);
        }
        .search-form button:active {
            transform: scale(0.97);
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin: 32px 0 16px;
        }
        @media (max-width: 700px) {
            .interaction-grid {
                grid-template-columns: 1fr;
            }
        }
        .comment-box,
        .rating-box {
            background: var(--bg);
            border-radius: var(--radius-sm);
            padding: 20px 22px;
            border: 1px solid var(--border);
        }
        .comment-box h3,
        .rating-box h3 {
            margin-top: 0;
            font-size: 1.1rem;
        }
        .comment-form textarea,
        .rating-form select {
            width: 100%;
            padding: 10px 14px;
            border: 2px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-family: var(--font);
            outline: none;
            transition: border-color 0.2s;
            margin-top: 6px;
        }
        .comment-form textarea {
            min-height: 80px;
            resize: vertical;
        }
        .comment-form textarea:focus,
        .rating-form select:focus {
            border-color: var(--accent);
        }
        .comment-form button,
        .rating-form button {
            margin-top: 10px;
            padding: 10px 24px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
        }
        .comment-form button:hover,
        .rating-form button:hover {
            background: var(--primary-light);
        }
        .rating-stars {
            display: flex;
            gap: 6px;
            font-size: 1.6rem;
            color: #d1d5db;
            margin: 6px 0 10px;
            cursor: pointer;
        }
        .rating-stars i.active {
            color: var(--accent);
        }
        .rating-stars i:hover {
            color: var(--accent-light);
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            font-size: 0.9rem;
        }
        .data-table th {
            background: var(--primary);
            color: #fff;
            padding: 10px 14px;
            text-align: left;
            font-weight: 600;
        }
        .data-table td {
            padding: 10px 14px;
            border-bottom: 1px solid var(--border);
        }
        .data-table tr:nth-child(even) {
            background: #f8fafc;
        }
        .data-table tr:hover {
            background: #fef9ec;
        }
        .site-footer {
            background: var(--header-bg);
            color: rgba(255, 255, 255, 0.8);
            padding: 40px 20px 28px;
            margin-top: auto;
        }
        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
        }
        @media (max-width: 720px) {
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        .footer-inner h4 {
            color: #fff;
            font-size: 1.1rem;
            margin-bottom: 12px;
            border-bottom: 2px solid var(--accent);
            padding-bottom: 6px;
            display: inline-block;
        }
        .footer-inner p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 6px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
            transition: color 0.2s;
        }
        .footer-links a:hover {
            color: var(--accent-light);
        }
        friend-link {
            display: block;
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
        }
        friend-link a {
            color: var(--accent-light);
            margin: 0 4px;
        }
        friend-link a:hover {
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            margin-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }
        .copyright i {
            color: var(--accent);
        }
        @media (max-width: 768px) {
            .header-inner {
                height: 56px;
                padding: 0 14px;
            }
            .my-logo {
                font-size: 1.3rem;
            }
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 56px;
                left: 0;
                right: 0;
                background: var(--header-bg);
                flex-direction: column;
                padding: 16px 20px 20px;
                gap: 4px;
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
                border-top: 1px solid rgba(255, 255, 255, 0.05);
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 10px 14px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            article {
                padding: 20px 16px 32px;
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.3rem;
            }
            h3 {
                font-size: 1.1rem;
            }
            .breadcrumb-wrap {
                padding: 8px 14px 0;
            }
            .breadcrumb {
                font-size: 0.78rem;
            }
            .container {
                padding: 16px 12px 40px;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                justify-content: center;
            }
            .resource-links {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 480px) {
            .resource-links {
                grid-template-columns: 1fr;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .data-table {
                font-size: 0.78rem;
            }
            .data-table th,
            .data-table td {
                padding: 6px 8px;
            }
        }
        :focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
        }