*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #f4f7fc;
            color: #1e293b;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        :root {
            --primary: #e65100;
            --primary-dark: #bf360c;
            --secondary: #0d47a1;
            --accent: #ff6f00;
            --bg-dark: #1a1a2e;
            --bg-card: #ffffff;
            --text-dark: #1e293b;
            --text-light: #f8fafc;
            --border: #e2e8f0;
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            --radius: 12px;
        }
        .site-header {
            background: var(--bg-dark);
            color: var(--text-light);
            padding: 12px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px 20px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fff;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .my-logo span {
            color: var(--accent);
        }
        .my-logo i {
            color: var(--accent);
            font-size: 1.6rem;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 8px;
            transition: transform 0.2s;
        }
        .nav-toggle:hover {
            transform: scale(1.1);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 18px;
            list-style: none;
        }
        .nav-menu a {
            color: #e2e8f0;
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 6px 10px;
            border-radius: 6px;
            transition: background 0.25s, color 0.25s;
        }
        .nav-menu a:hover,
        .nav-menu a:focus {
            background: rgba(255, 111, 0, 0.2);
            color: #ffb74d;
        }
        .nav-menu a i {
            margin-right: 6px;
        }
        .breadcrumb {
            background: #eef2f7;
            padding: 10px 0;
            font-size: 0.88rem;
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 10px;
            color: #94a3b8;
            font-weight: 600;
        }
        .breadcrumb a {
            color: var(--secondary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .current {
            color: #64748b;
            font-weight: 500;
        }
        main {
            padding: 30px 0 50px;
        }
        article {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 30px 35px;
            box-shadow: var(--shadow);
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary-dark);
            line-height: 1.2;
            margin-bottom: 10px;
            letter-spacing: -0.5px;
        }
        h1 i {
            color: var(--accent);
        }
        .subtitle {
            font-size: 1.1rem;
            color: #475569;
            border-left: 4px solid var(--accent);
            padding-left: 16px;
            margin-bottom: 28px;
        }
        h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--secondary);
            margin-top: 48px;
            margin-bottom: 16px;
            padding-bottom: 6px;
            border-bottom: 3px solid var(--accent);
            display: inline-block;
        }
        h3 {
            font-size: 1.35rem;
            font-weight: 600;
            color: #1e293b;
            margin-top: 32px;
            margin-bottom: 12px;
        }
        h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: #334155;
            margin-top: 22px;
            margin-bottom: 8px;
        }
        p {
            margin-bottom: 18px;
            color: #334155;
        }
        .lead {
            font-size: 1.15rem;
            color: #1e293b;
            font-weight: 500;
        }
        strong {
            color: #0f172a;
        }
        .highlight {
            background: #fff3e0;
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
        }
        ul,
        ol {
            margin: 12px 0 20px 24px;
            color: #334155;
        }
        li {
            margin-bottom: 8px;
        }
        ul li::marker {
            color: var(--accent);
        }
        .featured-image {
            margin: 28px 0;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        }
        .featured-image img {
            width: 100%;
            height: auto;
            display: block;
            object-fit: cover;
        }
        .featured-image figcaption {
            background: #f1f5f9;
            padding: 10px 16px;
            font-size: 0.9rem;
            color: #475569;
            font-style: italic;
        }
        .info-box {
            background: #eef6ff;
            border-left: 5px solid var(--secondary);
            padding: 18px 22px;
            border-radius: 0 10px 10px 0;
            margin: 24px 0;
        }
        .info-box strong {
            color: var(--secondary);
        }
        .info-box.tip {
            background: #f1f8e9;
            border-left-color: #558b2f;
        }
        .info-box.tip strong {
            color: #33691e;
        }
        .info-box.warning {
            background: #fff8e1;
            border-left-color: #f57f17;
        }
        .info-box.warning strong {
            color: #e65100;
        }
        .link-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 10px 16px;
            background: #f8fafc;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 18px 22px;
            margin: 24px 0;
            list-style: none;
        }
        .link-grid li a {
            color: var(--secondary);
            text-decoration: none;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color 0.2s, transform 0.2s;
        }
        .link-grid li a:hover {
            color: var(--accent);
            transform: translateX(4px);
        }
        .link-grid li a i {
            font-size: 0.8rem;
            color: var(--accent);
        }
        .search-section {
            background: #f1f5f9;
            border-radius: var(--radius);
            padding: 22px 26px;
            margin: 32px 0 20px;
        }
        .search-section form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .search-section input[type="text"] {
            flex: 1;
            min-width: 180px;
            padding: 12px 18px;
            border: 2px solid var(--border);
            border-radius: 30px;
            font-size: 1rem;
            outline: none;
            transition: border 0.3s;
        }
        .search-section input[type="text"]:focus {
            border-color: var(--accent);
        }
        .search-section button {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-section button:hover {
            background: var(--primary-dark);
            transform: scale(1.02);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin: 36px 0 20px;
        }
        .feedback-card {
            background: #f8fafc;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 22px 24px;
        }
        .feedback-card h3 {
            margin-top: 0;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--secondary);
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .feedback-card input,
        .feedback-card textarea,
        .feedback-card select {
            padding: 10px 14px;
            border: 2px solid var(--border);
            border-radius: 8px;
            font-size: 0.95rem;
            font-family: inherit;
            outline: none;
            transition: border 0.3s;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus,
        .feedback-card select:focus {
            border-color: var(--accent);
        }
        .feedback-card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .feedback-card button {
            background: var(--secondary);
            color: #fff;
            border: none;
            padding: 10px 20px;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
            align-self: flex-start;
        }
        .feedback-card button:hover {
            background: #0a3a7a;
            transform: scale(1.02);
        }
        .rating-stars {
            display: flex;
            gap: 4px;
            font-size: 1.6rem;
            color: #f59e0b;
            cursor: pointer;
            direction: rtl;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            cursor: pointer;
            transition: transform 0.15s, color 0.2s;
        }
        .rating-stars label:hover,
        .rating-stars label:hover~label {
            color: #f59e0b;
            transform: scale(1.15);
        }
        .rating-stars label i {
            pointer-events: none;
        }
        .site-footer {
            background: var(--bg-dark);
            color: #cbd5e1;
            padding: 36px 0 20px;
            margin-top: 40px;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 30px;
        }
        .site-footer h4 {
            color: #f8fafc;
            font-weight: 600;
            margin-bottom: 12px;
            font-size: 1.1rem;
        }
        .site-footer a {
            color: #94a3b8;
            text-decoration: none;
            transition: color 0.25s;
        }
        .site-footer a:hover {
            color: var(--accent);
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 18px;
            margin-top: 28px;
            text-align: center;
            font-size: 0.9rem;
            color: #94a3b8;
        }
        .footer-bottom .copyright {
            font-weight: 400;
        }
        friend-link {
            display: block;
            background: #1e293b;
            border-radius: 8px;
            padding: 14px 18px;
            margin: 16px 0 8px;
            font-weight: 500;
            color: #e2e8f0;
        }
        friend-link a {
            color: #fbbf24;
            text-decoration: none;
        }
        friend-link a:hover {
            text-decoration: underline;
        }
        @media (max-width: 900px) {
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
            article {
                padding: 20px 18px;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 700px) {
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #0f172a;
                padding: 14px 0;
                border-radius: 0 0 12px 12px;
                gap: 6px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 10px 20px;
                width: 100%;
                text-align: left;
            }
            .header-inner {
                position: relative;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .link-grid {
                grid-template-columns: 1fr;
            }
            .search-section form {
                flex-direction: column;
            }
            .search-section button {
                width: 100%;
                justify-content: center;
            }
            h1 {
                font-size: 1.7rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .breadcrumb ol {
                font-size: 0.8rem;
            }
        }
        @media (max-width: 480px) {
            article {
                padding: 14px 12px;
            }
            h1 {
                font-size: 1.4rem;
            }
            h2 {
                font-size: 1.25rem;
            }
            h3 {
                font-size: 1.1rem;
            }
            .feedback-card {
                padding: 16px 14px;
            }
        }
        .nav-menu.open {
            display: flex;
        }
        .schema-hidden {
            display: none;
        }
        .last-updated {
            display: inline-block;
            background: #e2e8f0;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            color: #475569;
            margin-bottom: 20px;
        }
        .last-updated i {
            margin-right: 6px;
        }
        .emoji-big {
            font-size: 1.4em;
            margin-right: 4px;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 20px 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            background: #f8fafc;
            border-radius: 8px;
            overflow: hidden;
        }
        th,
        td {
            padding: 12px 16px;
            text-align: left;
            border-bottom: 1px solid var(--border);
        }
        th {
            background: var(--bg-dark);
            color: #f8fafc;
            font-weight: 600;
        }
        tr:last-child td {
            border-bottom: none;
        }
        tr:hover td {
            background: #f1f5f9;
        }