*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --bg-primary: #0d0f14;
            --bg-secondary: #151a22;
            --bg-card: #1c222e;
            --bg-input: #0d0f14;
            --text-primary: #e8edf5;
            --text-secondary: #9aa8c7;
            --text-muted: #6a7a9a;
            --accent: #f0c040;
            --accent-hover: #ffd866;
            --accent-dim: #b8912e;
            --border: #2a3346;
            --border-light: #3a4660;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
            --radius: 12px;
            --radius-sm: 6px;
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --font-mono: 'Cascadia Code', 'Fira Code', monospace;
            --transition: 0.2s ease;
            --max-width: 1200px;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus-visible {
            color: var(--accent-hover);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border);
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px 20px;
        }
        .my-logo {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--accent);
            text-transform: uppercase;
            background: linear-gradient(135deg, var(--accent), var(--accent-hover));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .my-logo small {
            font-size: 0.65rem;
            font-weight: 400;
            display: block;
            -webkit-text-fill-color: var(--text-muted);
            color: var(--text-muted);
            letter-spacing: 0.08em;
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 4px;
            flex-wrap: wrap;
        }
        .nav-list a {
            display: block;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: background var(--transition), color var(--transition);
        }
        .nav-list a:hover,
        .nav-list a:focus-visible {
            background: var(--bg-card);
            color: var(--accent);
            text-decoration: none;
        }
        .nav-list a.active {
            color: var(--accent);
            background: rgba(240, 192, 64, 0.1);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        .hamburger:hover {
            background: var(--bg-card);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }
        .breadcrumbs {
            padding: 12px 0 8px;
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            flex-wrap: wrap;
            gap: 4px 8px;
        }
        .breadcrumbs a {
            color: var(--text-secondary);
        }
        .breadcrumbs a:hover {
            color: var(--accent);
        }
        .breadcrumbs .sep {
            color: var(--border-light);
        }
        .hero {
            padding: 40px 0 24px;
        }
        .hero h1 {
            font-size: clamp(2rem, 5vw, 3.4rem);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #f0c040 0%, #ffd866 60%, #f0c040 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero .lead {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 780px;
            margin-bottom: 20px;
        }
        .hero .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 28px;
            font-size: 0.9rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }
        .hero .meta i {
            margin-right: 6px;
            color: var(--accent-dim);
        }
        .search-section {
            background: var(--bg-secondary);
            border-radius: var(--radius);
            padding: 28px 32px;
            margin: 32px 0;
            border: 1px solid var(--border);
        }
        .search-section h2 {
            font-size: 1.2rem;
            margin-bottom: 12px;
            color: var(--accent);
        }
        .search-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .search-form input[type="text"] {
            flex: 1;
            min-width: 200px;
            padding: 14px 18px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            background: var(--bg-input);
            color: var(--text-primary);
            font-size: 1rem;
            transition: border var(--transition);
        }
        .search-form input[type="text"]:focus {
            outline: none;
            border-color: var(--accent);
        }
        .search-form button {
            padding: 14px 32px;
            background: var(--accent);
            color: #0d0f14;
            border: none;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition);
        }
        .search-form button:hover {
            background: var(--accent-hover);
            transform: scale(1.02);
        }
        .content-area {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 24px 0 48px;
        }
        .content-main {
            min-width: 0;
        }
        .content-main h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin: 40px 0 16px;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--border);
            color: var(--accent);
        }
        .content-main h3 {
            font-size: 1.35rem;
            font-weight: 600;
            margin: 32px 0 12px;
            color: var(--text-primary);
        }
        .content-main h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin: 24px 0 8px;
            color: var(--text-secondary);
        }
        .content-main p {
            margin-bottom: 18px;
            color: var(--text-secondary);
            font-size: 1rem;
            line-height: 1.8;
        }
        .content-main p b,
        .content-main p strong {
            color: var(--text-primary);
            font-weight: 600;
        }
        .content-main ul,
        .content-main ol {
            margin: 16px 0 24px 24px;
            color: var(--text-secondary);
        }
        .content-main li {
            margin-bottom: 8px;
            line-height: 1.7;
        }
        .content-main li b {
            color: var(--text-primary);
        }
        .content-main .feature-image {
            margin: 32px 0;
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            background: var(--bg-secondary);
        }
        .content-main .feature-image img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .content-main .feature-image figcaption {
            padding: 12px 18px;
            font-size: 0.85rem;
            color: var(--text-muted);
            font-style: italic;
        }
        .content-main .highlight-box {
            background: var(--bg-card);
            border-left: 4px solid var(--accent);
            padding: 20px 24px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 24px 0;
        }
        .content-main .highlight-box p:last-child {
            margin-bottom: 0;
        }
        .content-main .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 16px;
            margin: 24px 0;
        }
        .content-main .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 18px 16px;
            text-align: center;
        }
        .content-main .stat-card .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            display: block;
        }
        .content-main .stat-card .label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px 20px;
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--accent);
            margin-bottom: 12px;
            border-bottom: 1px solid var(--border);
            padding-bottom: 8px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-card li {
            margin-bottom: 10px;
        }
        .sidebar-card li a {
            font-size: 0.92rem;
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-secondary);
            transition: color var(--transition), padding-left var(--transition);
        }
        .sidebar-card li a:hover {
            color: var(--accent);
            padding-left: 4px;
            text-decoration: none;
        }
        .sidebar-card li a i {
            width: 18px;
            color: var(--accent-dim);
            font-size: 0.8rem;
        }
        .interaction-section {
            margin: 40px 0;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .interaction-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 24px;
        }
        .interaction-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--accent);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .interaction-card form {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .interaction-card input,
        .interaction-card textarea,
        .interaction-card select {
            padding: 12px 16px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            background: var(--bg-input);
            color: var(--text-primary);
            font-size: 0.95rem;
            font-family: var(--font-sans);
            transition: border var(--transition);
        }
        .interaction-card input:focus,
        .interaction-card textarea:focus,
        .interaction-card select:focus {
            outline: none;
            border-color: var(--accent);
        }
        .interaction-card textarea {
            min-height: 100px;
            resize: vertical;
        }
        .interaction-card button {
            padding: 12px 24px;
            background: var(--accent);
            color: #0d0f14;
            border: none;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition);
            align-self: flex-start;
        }
        .interaction-card button:hover {
            background: var(--accent-hover);
            transform: scale(1.02);
        }
        .rating-stars {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 4px;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            font-size: 1.8rem;
            color: var(--border-light);
            cursor: pointer;
            transition: color var(--transition);
        }
        .rating-stars label:hover,
        .rating-stars label:hover~label,
        .rating-stars input:checked~label {
            color: var(--accent);
        }
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border);
            padding: 40px 0 24px;
            margin-top: 48px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 28px;
        }
        .footer-grid h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--accent);
            margin-bottom: 12px;
        }
        .footer-grid p,
        .footer-grid a {
            font-size: 0.9rem;
            color: var(--text-secondary);
        }
        .footer-grid ul {
            list-style: none;
            padding: 0;
        }
        .footer-grid li {
            margin-bottom: 6px;
        }
        .footer-grid li a:hover {
            color: var(--accent);
        }
        friend-link {
            display: block;
            margin-top: 8px;
            font-size: 0.9rem;
        }
        friend-link a {
            color: var(--text-secondary);
        }
        friend-link a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 18px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        @media (max-width: 1024px) {
            .content-area {
                grid-template-columns: 1fr;
            }
            .sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .interaction-section {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-list {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--bg-secondary);
                border: 1px solid var(--border);
                border-radius: var(--radius-sm);
                padding: 8px 0;
                margin-top: 8px;
            }
            .nav-list.open {
                display: flex;
            }
            .hamburger {
                display: flex;
            }
            .header-inner {
                align-items: center;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                width: 100%;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .stat-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 14px;
            }
            .hero h1 {
                font-size: 1.5rem;
            }
            .content-main h2 {
                font-size: 1.4rem;
            }
            .content-main h3 {
                font-size: 1.15rem;
            }
            .stat-grid {
                grid-template-columns: 1fr;
            }
            .interaction-card {
                padding: 20px 16px;
            }
            .search-section {
                padding: 20px 18px;
            }
        }
        .scroll-offset {
            scroll-margin-top: 100px;
        }
        .emoji {
            font-style: normal;
        }
        .content-main table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 0.95rem;
        }
        .content-main th,
        .content-main td {
            padding: 12px 16px;
            text-align: left;
            border-bottom: 1px solid var(--border);
        }
        .content-main th {
            background: var(--bg-card);
            color: var(--accent);
            font-weight: 600;
        }
        .content-main td {
            color: var(--text-secondary);
        }
        .content-main tr:hover td {
            background: rgba(240, 192, 64, 0.04);
        }
        .content-main code {
            font-family: var(--font-mono);
            background: var(--bg-card);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--accent);
        }
        .content-main pre {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 18px 20px;
            overflow-x: auto;
            margin: 20px 0;
            font-family: var(--font-mono);
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }