*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --bg: #0d0f14;
            --surface: #161a22;
            --surface2: #1e2530;
            --primary: #f59e0b;
            --primary-dim: #d97706;
            --accent: #10b981;
            --text: #e8edf5;
            --text-dim: #9ca3af;
            --text-muted: #6b7280;
            --border: #2a3140;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
            --radius: 12px;
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --max-width: 1120px;
            --header-h: 72px;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            padding-top: var(--header-h);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #fbbf24;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        h1,
        h2,
        h3,
        h4 {
            font-weight: 700;
            line-height: 1.3;
            color: #fff;
            margin-top: 1.8em;
            margin-bottom: 0.6em;
        }
        h1 {
            font-size: 2.6rem;
            margin-top: 0.2em;
            background: linear-gradient(135deg, #f59e0b, #f97316);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        h2 {
            font-size: 2rem;
            border-left: 5px solid var(--primary);
            padding-left: 1rem;
            color: #fde68a;
        }
        h3 {
            font-size: 1.5rem;
            color: #fcd34d;
        }
        h4 {
            font-size: 1.2rem;
            color: #fbbf24;
        }
        p {
            margin-bottom: 1.4em;
            color: var(--text);
        }
        ul,
        ol {
            margin: 1em 0 1.6em 1.8em;
            color: var(--text);
        }
        li {
            margin-bottom: 0.5em;
        }
        b,
        strong {
            color: #fff;
            font-weight: 700;
        }
        hr {
            border: none;
            border-top: 2px solid var(--border);
            margin: 2.5rem 0;
        }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-h);
            background: rgba(13, 15, 20, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            display: flex;
            align-items: center;
        }
        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            background: linear-gradient(135deg, #f59e0b, #f97316);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo i {
            -webkit-text-fill-color: var(--primary);
            font-size: 1.4rem;
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.9;
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 0.4rem;
            margin: 0;
            padding: 0;
        }
        .nav-list a {
            padding: 0.5rem 1rem;
            border-radius: 8px;
            color: var(--text-dim);
            font-weight: 500;
            font-size: 0.9rem;
            transition: background 0.25s, color 0.25s;
        }
        .nav-list a:hover {
            background: var(--surface2);
            color: #fff;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 0.2rem 0.4rem;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: var(--surface2);
        }
        .breadcrumb {
            max-width: var(--max-width);
            margin: 1.2rem auto 0.8rem;
            padding: 0 1.5rem;
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .breadcrumb li+li::before {
            content: "›";
            margin: 0 0.6rem;
            color: var(--text-muted);
        }
        .breadcrumb a {
            color: var(--text-dim);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .active {
            color: var(--primary);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem 3rem;
            flex: 1;
        }
        .featured-img {
            margin: 1.8rem 0 2.4rem;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .featured-img img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .img-caption {
            font-size: 0.85rem;
            color: var(--text-muted);
            text-align: center;
            margin-top: 0.6rem;
            font-style: italic;
        }
        .search-section {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 1.8rem 2rem;
            margin: 2rem 0 2.4rem;
            border: 1px solid var(--border);
        }
        .search-form {
            display: flex;
            gap: 0.6rem;
            flex-wrap: wrap;
        }
        .search-form input {
            flex: 1;
            min-width: 180px;
            padding: 0.8rem 1.2rem;
            border-radius: 8px;
            border: 1px solid var(--border);
            background: var(--bg);
            color: #fff;
            font-size: 1rem;
            outline: none;
            transition: border 0.2s;
        }
        .search-form input:focus {
            border-color: var(--primary);
        }
        .search-form button {
            padding: 0.8rem 1.8rem;
            background: var(--primary);
            color: #0d0f14;
            border: none;
            border-radius: 8px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-form button:hover {
            background: var(--primary-dim);
            transform: scale(1.02);
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.8rem;
            margin: 2.4rem 0;
        }
        .interaction-card {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 1.8rem 2rem;
            border: 1px solid var(--border);
        }
        .interaction-card h3 {
            margin-top: 0;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .interaction-card form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            margin-top: 0.8rem;
        }
        .interaction-card textarea,
        .interaction-card input {
            padding: 0.7rem 1rem;
            border-radius: 8px;
            border: 1px solid var(--border);
            background: var(--bg);
            color: #fff;
            font-size: 0.95rem;
            font-family: var(--font);
            outline: none;
            resize: vertical;
            transition: border 0.2s;
        }
        .interaction-card textarea:focus,
        .interaction-card input:focus {
            border-color: var(--primary);
        }
        .interaction-card textarea {
            min-height: 90px;
        }
        .interaction-card button {
            padding: 0.7rem 1.5rem;
            background: var(--primary);
            color: #0d0f14;
            border: none;
            border-radius: 8px;
            font-weight: 700;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.2s;
            align-self: flex-start;
        }
        .interaction-card button:hover {
            background: var(--primary-dim);
        }
        .star-rating {
            display: flex;
            gap: 0.3rem;
            font-size: 1.6rem;
            color: var(--text-muted);
            cursor: pointer;
            direction: rtl;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            transition: color 0.2s;
            color: var(--text-muted);
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: var(--primary);
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.8rem 0;
            background: var(--surface);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
        }
        .data-table th,
        .data-table td {
            padding: 0.9rem 1.2rem;
            text-align: left;
            border-bottom: 1px solid var(--border);
        }
        .data-table th {
            background: var(--surface2);
            color: #fcd34d;
            font-weight: 700;
            font-size: 0.95rem;
        }
        .data-table td {
            color: var(--text);
        }
        .data-table tr:last-child td {
            border-bottom: none;
        }
        .data-table tr:hover td {
            background: rgba(245, 158, 11, 0.05);
        }
        blockquote {
            border-left: 4px solid var(--primary);
            background: var(--surface);
            padding: 1.2rem 1.8rem;
            margin: 1.8rem 0;
            border-radius: 0 var(--radius) var(--radius) 0;
            font-style: italic;
            color: var(--text-dim);
        }
        blockquote cite {
            display: block;
            margin-top: 0.6rem;
            font-style: normal;
            color: var(--primary);
            font-weight: 600;
        }
        .tip-box {
            background: linear-gradient(135deg, rgba(16, 185, 129, 0.12), rgba(5, 150, 105, 0.05));
            border-left: 5px solid var(--accent);
            padding: 1.2rem 1.8rem;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 1.6rem 0;
        }
        .tip-box strong {
            color: var(--accent);
        }
        .link-cluster {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1.2rem;
            margin: 1.2rem 0;
            padding: 0;
            list-style: none;
        }
        .link-cluster li a {
            background: var(--surface2);
            padding: 0.3rem 1rem;
            border-radius: 20px;
            font-size: 0.9rem;
            border: 1px solid var(--border);
            transition: background 0.2s, border-color 0.2s;
        }
        .link-cluster li a:hover {
            background: var(--primary);
            color: #0d0f14;
            border-color: var(--primary);
            text-decoration: none;
        }
        .site-footer {
            background: var(--surface);
            border-top: 1px solid var(--border);
            padding: 2.4rem 1.5rem 1.8rem;
            margin-top: 3rem;
        }
        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 2rem;
        }
        .footer-inner friend-link {
            display: flex;
            flex-direction: column;
            gap: 0.4rem;
        }
        .footer-inner friend-link a {
            color: var(--text-dim);
            font-size: 0.9rem;
            padding: 0.2rem 0;
        }
        .footer-inner friend-link a:hover {
            color: var(--primary);
        }
        .copyright {
            grid-column: 1 / -1;
            text-align: center;
            padding-top: 1.6rem;
            border-top: 1px solid var(--border);
            margin-top: 1.2rem;
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        .copyright strong {
            color: var(--text-dim);
        }
        .last-updated {
            color: var(--text-muted);
            font-size: 0.85rem;
            text-align: right;
            margin-top: 0.4rem;
        }
        @media (max-width: 820px) {
            .interaction-grid {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
            :root {
                --header-h: 64px;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            h3 {
                font-size: 1.25rem;
            }
            .nav-list {
                display: none;
                position: absolute;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(13, 15, 20, 0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 0.8rem 1.5rem 1.5rem;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow);
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list a {
                padding: 0.7rem 0.8rem;
                font-size: 1rem;
            }
            .hamburger {
                display: block;
            }
            .header-inner {
                padding: 0 1rem;
            }
            .container {
                padding: 0 1rem 2rem;
            }
            .breadcrumb {
                padding: 0 1rem;
            }
            .search-section {
                padding: 1.2rem 1.2rem;
            }
            .interaction-card {
                padding: 1.2rem 1.2rem;
            }
            .data-table {
                font-size: 0.85rem;
            }
            .data-table th,
            .data-table td {
                padding: 0.6rem 0.8rem;
            }
        }
        @media (max-width: 480px) {
            h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.3rem;
            }
            h3 {
                font-size: 1.1rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                width: 100%;
                justify-content: center;
            }
            .star-rating {
                font-size: 1.3rem;
            }
        }
        .fade-in {
            animation: fadeIn 0.6s ease;
        }
        @keyframes fadeIn {
            0% {
                opacity: 0;
                transform: translateY(16px);
            }
            100% {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .article-body p,
        .article-body h2,
        .article-body h3,
        .article-body h4,
        .article-body blockquote,
        .article-body .tip-box,
        .article-body .data-table,
        .article-body ul,
        .article-body ol {
            animation: fadeIn 0.5s ease both;
        }
        .article-body>*:nth-child(1) {
            animation-delay: 0.02s;
        }
        .article-body>*:nth-child(2) {
            animation-delay: 0.04s;
        }
        .article-body>*:nth-child(3) {
            animation-delay: 0.06s;
        }
        .article-body>*:nth-child(4) {
            animation-delay: 0.08s;
        }
        .article-body>*:nth-child(5) {
            animation-delay: 0.10s;
        }
        .article-body>*:nth-child(6) {
            animation-delay: 0.12s;
        }