*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --bg: #0f0f1a;
            --surface: #1a1a2e;
            --surface2: #222240;
            --accent: #f5c542;
            --accent2: #e8a838;
            --text: #f0f0f5;
            --text2: #b8b8d0;
            --link: #7ec8e3;
            --link-hover: #f5c542;
            --border: #3a3a5a;
            --radius: 12px;
            --shadow: 0 8px 32px rgba(0, 0, 0, .5);
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --max-w: 1200px;
            --header-h: 70px;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: var(--link);
            text-decoration: none;
            transition: color .25s;
        }
        a:hover,
        a:focus-visible {
            color: var(--link-hover);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        ul,
        ol {
            padding-left: 1.4rem;
        }
        li {
            margin-bottom: .4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: #fff;
            margin-top: 1.8em;
            margin-bottom: .6em;
        }
        h1 {
            font-size: 2.4rem;
            margin-top: .2em;
        }
        h2 {
            font-size: 1.8rem;
            border-bottom: 2px solid var(--accent);
            padding-bottom: .3rem;
        }
        h3 {
            font-size: 1.35rem;
            color: var(--accent);
        }
        h4 {
            font-size: 1.1rem;
            color: var(--text2);
        }
        p {
            margin-bottom: 1.2rem;
        }
        .container {
            max-width: var(--max-w);
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(15, 15, 26, .92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            height: var(--header-h);
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-w);
            margin: 0 auto;
            padding: 0 20px;
            gap: 16px;
        }
        .my-logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--accent);
            letter-spacing: -.5px;
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .my-logo i {
            font-size: 1.8rem;
            color: var(--accent2);
        }
        .my-logo:hover {
            text-decoration: none;
            color: #fff;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
            transition: background .2s;
        }
        .nav-toggle:hover {
            background: var(--surface2);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .nav-menu a {
            padding: 6px 14px;
            border-radius: 8px;
            font-size: .9rem;
            font-weight: 500;
            color: var(--text2);
            transition: all .2s;
            white-space: nowrap;
        }
        .nav-menu a:hover,
        .nav-menu a.active {
            color: #fff;
            background: var(--surface2);
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            font-size: .82rem;
            color: var(--text2);
            padding: 14px 0 6px;
            margin-bottom: 4px;
        }
        .breadcrumb a {
            color: var(--link);
        }
        .breadcrumb a:hover {
            color: var(--link-hover);
        }
        .breadcrumb span.sep {
            color: var(--border);
        }
        .hero {
            padding: 30px 0 20px;
            text-align: center;
        }
        .hero h1 {
            font-size: 2.8rem;
            background: linear-gradient(135deg, #f5c542, #e8a838, #d4922a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: 1.15rem;
            color: var(--text2);
            max-width: 720px;
            margin: 12px auto 0;
        }
        .search-wrap {
            max-width: 560px;
            margin: 24px auto 0;
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            border: 2px solid var(--border);
            background: var(--surface);
            transition: border-color .3s;
        }
        .search-wrap:focus-within {
            border-color: var(--accent);
        }
        .search-wrap input {
            flex: 1;
            padding: 14px 20px;
            border: none;
            background: transparent;
            color: var(--text);
            font-size: 1rem;
            outline: none;
        }
        .search-wrap input::placeholder {
            color: var(--text2);
            opacity: .7;
        }
        .search-wrap button {
            padding: 14px 24px;
            border: none;
            background: var(--accent);
            color: #0f0f1a;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: background .3s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-wrap button:hover {
            background: var(--accent2);
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 20px 0 40px;
        }
        .main-content {
            min-width: 0;
        }
        .sidebar {
            position: sticky;
            top: calc(var(--header-h) + 20px);
            align-self: start;
            background: var(--surface);
            border-radius: var(--radius);
            padding: 20px;
            border: 1px solid var(--border);
            max-height: calc(100vh - var(--header-h) - 60px);
            overflow-y: auto;
        }
        .sidebar h3 {
            margin-top: 0;
            font-size: 1.1rem;
            border-bottom: 1px solid var(--border);
            padding-bottom: 10px;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
        }
        .sidebar li {
            padding: 6px 0;
            border-bottom: 1px solid rgba(255, 255, 255, .04);
        }
        .sidebar a {
            font-size: .9rem;
        }
        .feature-fig {
            margin: 24px 0;
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--surface);
            border: 1px solid var(--border);
        }
        .feature-fig img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .feature-fig figcaption {
            padding: 12px 18px;
            font-size: .88rem;
            color: var(--text2);
            font-style: italic;
            border-top: 1px solid var(--border);
        }
        .feedback-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            margin: 40px 0;
            padding: 28px;
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px solid var(--border);
        }
        .feedback-section h3 {
            margin-top: 0;
            font-size: 1.3rem;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 4px;
            font-size: .92rem;
            color: var(--text2);
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 14px;
            border-radius: 8px;
            border: 1px solid var(--border);
            background: var(--bg);
            color: var(--text);
            font-size: .95rem;
            transition: border .3s;
            font-family: inherit;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--accent);
            outline: none;
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            padding: 12px 28px;
            border: none;
            border-radius: 8px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: background .3s, transform .15s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary {
            background: var(--accent);
            color: #0f0f1a;
        }
        .btn-primary:hover {
            background: var(--accent2);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 4px;
            font-size: 1.6rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: var(--border);
            cursor: pointer;
            transition: color .2s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: var(--accent);
        }
        friend-link {
            display: block;
            padding: 24px 0;
            border-top: 2px solid var(--border);
            margin-top: 20px;
        }
        friend-link h3 {
            margin-top: 0;
            font-size: 1.2rem;
        }
        .friend-links-list {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            padding: 10px 0 0;
            list-style: none;
        }
        .friend-links-list li a {
            font-size: .92rem;
            padding: 4px 0;
            border-bottom: 1px solid transparent;
        }
        .friend-links-list li a:hover {
            border-bottom-color: var(--accent);
        }
        footer {
            background: var(--surface);
            border-top: 1px solid var(--border);
            padding: 32px 0 24px;
            margin-top: auto;
        }
        footer .container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }
        footer .copyright {
            font-size: .85rem;
            color: var(--text2);
        }
        footer .copyright strong {
            color: var(--text);
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: relative;
                top: 0;
                max-height: none;
                order: 2;
            }
            .feedback-section {
                grid-template-columns: 1fr;
            }
            .hero h1 {
                font-size: 2rem;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(15, 15, 26, .98);
                backdrop-filter: blur(16px);
                padding: 16px 20px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow);
                gap: 4px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 10px 16px;
                font-size: 1rem;
                width: 100%;
            }
            .hero h1 {
                font-size: 1.7rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .search-wrap {
                flex-direction: column;
                border-radius: 12px;
            }
            .search-wrap button {
                border-radius: 0 0 12px 12px;
                justify-content: center;
            }
            .header-inner {
                padding: 0 12px;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .my-logo i {
                font-size: 1.3rem;
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .feedback-section {
                padding: 18px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .hero h1 {
                font-size: 1.4rem;
            }
            .breadcrumb {
                font-size: .72rem;
            }
            .star-rating {
                font-size: 1.3rem;
            }
        }
        .text-accent {
            color: var(--accent);
        }
        .text-muted {
            color: var(--text2);
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .gap-1 {
            gap: 1rem;
        }
        .flex {
            display: flex;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }
        .items-center {
            align-items: center;
        }
        .justify-between {
            justify-content: space-between;
        }
        .last-updated {
            font-size: .85rem;
            color: var(--text2);
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 8px 0 18px;
        }
        .last-updated i {
            color: var(--accent);
        }
        .toc {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 18px 22px;
            border: 1px solid var(--border);
            margin-bottom: 28px;
        }
        .toc summary {
            font-weight: 700;
            font-size: 1.1rem;
            cursor: pointer;
            color: var(--accent);
        }
        .toc ol {
            margin-top: 12px;
            columns: 2;
            column-gap: 28px;
        }
        .toc ol li {
            break-inside: avoid;
            padding: 2px 0;
        }
        .toc a {
            font-size: .92rem;
        }
        @media (max-width: 600px) {
            .toc ol {
                columns: 1;
            }
        }
        .section-card {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 24px 28px;
            margin-bottom: 28px;
            border: 1px solid var(--border);
            transition: box-shadow .3s;
        }
        .section-card:hover {
            box-shadow: var(--shadow);
        }
        @media (max-width: 480px) {
            .section-card {
                padding: 16px 14px;
            }
        }