*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --primary: #6c2bd9;
            --primary-dark: #4a1a9e;
            --primary-light: #8f5ae8;
            --secondary: #ff6b9d;
            --accent: #00d4aa;
            --bg-dark: #0d0b1a;
            --bg-card: #1a1530;
            --bg-light: #f8f7fc;
            --text-light: #f0edf8;
            --text-muted: #b8b0d0;
            --text-dark: #1e1a2e;
            --border-glow: rgba(108, 43, 217, 0.3);
            --shadow-glow: 0 0 30px rgba(108, 43, 217, 0.15);
            --radius: 16px;
            --radius-sm: 8px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            --font-serif: Georgia, 'Times New Roman', Times, serif;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-light);
            line-height: 1.75;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus-visible {
            color: var(--accent);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0d0b1a 0%, #1a1530 100%);
            border-bottom: 1px solid rgba(108, 43, 217, 0.2);
            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;
            padding: 12px 0;
            flex-wrap: wrap;
            gap: 10px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--secondary), var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            -webkit-text-fill-color: var(--secondary);
            font-size: 1.6rem;
        }
        .my-logo:hover {
            opacity: 0.9;
            text-decoration: none;
        }
        .my-logo small {
            font-size: 0.7rem;
            font-weight: 400;
            -webkit-text-fill-color: var(--text-muted);
            display: block;
            letter-spacing: 1px;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .main-nav {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: var(--text-muted);
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .main-nav a:hover,
        .main-nav a:focus-visible {
            color: var(--text-light);
            background: rgba(108, 43, 217, 0.15);
            border-color: var(--border-glow);
            text-decoration: none;
        }
        .main-nav a.active {
            color: var(--text-light);
            background: rgba(108, 43, 217, 0.2);
            border-color: var(--primary);
        }
        .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:hover {
            background: rgba(108, 43, 217, 0.1);
        }
        .hamburger span {
            display: block;
            width: 28px;
            height: 2.5px;
            background: var(--text-light);
            border-radius: 4px;
            transition: all var(--transition);
        }
        .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);
        }
        .breadcrumb {
            padding: 12px 0 4px;
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            list-style: none;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .breadcrumb li+li::before {
            content: "›";
            color: var(--text-muted);
            font-size: 1.1rem;
        }
        .breadcrumb a {
            color: var(--primary-light);
        }
        .breadcrumb a:hover {
            color: var(--secondary);
        }
        .breadcrumb .current {
            color: var(--text-muted);
            font-weight: 500;
        }
        .hero {
            padding: 50px 0 40px;
            background: radial-gradient(ellipse at 30% 20%, rgba(108, 43, 217, 0.12) 0%, transparent 70%);
            text-align: center;
        }
        .hero h1 {
            font-size: clamp(2.2rem, 6vw, 3.8rem);
            font-weight: 800;
            line-height: 1.15;
            background: linear-gradient(135deg, #fff 30%, var(--primary-light), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 16px;
        }
        .hero .subhead {
            font-size: 1.2rem;
            color: var(--text-muted);
            max-width: 720px;
            margin: 0 auto 20px;
            font-weight: 400;
        }
        .hero .meta-line {
            font-size: 0.9rem;
            color: var(--text-muted);
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 20px;
        }
        .hero .meta-line i {
            margin-right: 6px;
            color: var(--primary-light);
        }
        .hero .badge {
            display: inline-block;
            background: rgba(108, 43, 217, 0.2);
            border: 1px solid var(--border-glow);
            padding: 4px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--primary-light);
            font-weight: 500;
            margin-bottom: 18px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 30px 0 60px;
        }
        .main-content {
            min-width: 0;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .section-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 28px;
            margin-bottom: 32px;
            border: 1px solid rgba(108, 43, 217, 0.08);
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .section-card:hover {
            border-color: rgba(108, 43, 217, 0.2);
            box-shadow: var(--shadow-glow);
        }
        .section-card h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 18px;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .section-card h2 i {
            color: var(--secondary);
            font-size: 1.4rem;
        }
        .section-card h3 {
            font-size: 1.35rem;
            font-weight: 600;
            margin: 24px 0 12px;
            color: var(--primary-light);
        }
        .section-card h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin: 18px 0 8px;
            color: var(--accent);
        }
        .section-card p {
            margin-bottom: 16px;
            color: var(--text-muted);
            font-size: 1rem;
            line-height: 1.8;
        }
        .section-card p strong {
            color: var(--text-light);
        }
        .section-card ul,
        .section-card ol {
            margin: 0 0 16px 24px;
            color: var(--text-muted);
        }
        .section-card li {
            margin-bottom: 8px;
            line-height: 1.7;
        }
        .section-card blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 20px;
            margin: 20px 0;
            background: rgba(108, 43, 217, 0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-light);
        }
        .section-card blockquote cite {
            display: block;
            margin-top: 8px;
            font-size: 0.9rem;
            color: var(--text-muted);
            font-style: normal;
        }
        .feature-image {
            border-radius: var(--radius-sm);
            margin: 24px 0;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
            width: 100%;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 24px 20px;
            margin-bottom: 24px;
            border: 1px solid rgba(108, 43, 217, 0.08);
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 14px;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h3 i {
            color: var(--secondary);
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-card li {
            margin-bottom: 8px;
        }
        .sidebar-card li a {
            color: var(--text-muted);
            font-size: 0.92rem;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 4px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            transition: color var(--transition), padding-left var(--transition);
        }
        .sidebar-card li a:hover {
            color: var(--secondary);
            padding-left: 6px;
            text-decoration: none;
        }
        .sidebar-card li a i {
            font-size: 0.7rem;
            color: var(--primary-light);
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-weight: 500;
            margin-bottom: 6px;
            color: var(--text-light);
            font-size: 0.95rem;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 16px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-sm);
            color: var(--text-light);
            font-family: var(--font-sans);
            font-size: 0.95rem;
            transition: border-color var(--transition), background var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--primary);
            background: rgba(108, 43, 217, 0.08);
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border: none;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all var(--transition);
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
        }
        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(108, 43, 217, 0.3);
        }
        .btn-secondary {
            background: linear-gradient(135deg, var(--secondary), #e0557a);
        }
        .btn-secondary:hover {
            box-shadow: 0 8px 30px rgba(255, 107, 157, 0.3);
        }
        .btn-accent {
            background: linear-gradient(135deg, var(--accent), #00b894);
        }
        .btn-accent:hover {
            box-shadow: 0 8px 30px rgba(0, 212, 170, 0.3);
        }
        .star-rating {
            display: flex;
            gap: 6px;
            font-size: 1.6rem;
            cursor: pointer;
            direction: rtl;
            justify-content: flex-end;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: rgba(255, 255, 255, 0.15);
            transition: color var(--transition);
            cursor: pointer;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #ffc107;
        }
        .comment-item {
            padding: 16px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .comment-item:last-child {
            border-bottom: none;
        }
        .comment-item .author {
            font-weight: 600;
            color: var(--text-light);
        }
        .comment-item .date {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-left: 12px;
        }
        .comment-item .text {
            margin-top: 6px;
            color: var(--text-muted);
        }
        friend-link {
            display: block;
            padding: 24px 0 16px;
        }
        friend-link .friend-list {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            list-style: none;
            padding: 0;
            margin: 12px 0 0;
        }
        friend-link .friend-list li a {
            color: var(--text-muted);
            font-size: 0.92rem;
            padding: 4px 0;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        friend-link .friend-list li a:hover {
            color: var(--secondary);
        }
        friend-link .friend-list li a::before {
            content: "🔗";
            font-size: 0.8rem;
        }
        .site-footer {
            background: linear-gradient(135deg, #0d0b1a, #1a1530);
            border-top: 1px solid rgba(108, 43, 217, 0.15);
            padding: 30px 0 20px;
            margin-top: auto;
            text-align: center;
        }
        .site-footer .copyright {
            color: var(--text-muted);
            font-size: 0.85rem;
            margin-top: 16px;
        }
        .site-footer .copyright a {
            color: var(--primary-light);
        }
        @media (max-width: 960px) {
            .content-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .sidebar {
                position: static;
                order: 2;
            }
            .main-content {
                order: 1;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                padding: 10px 0;
            }
            .hamburger {
                display: flex;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--bg-card);
                border-radius: var(--radius);
                padding: 16px;
                margin-top: 8px;
                border: 1px solid rgba(108, 43, 217, 0.15);
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 10px 16px;
                border-radius: var(--radius-sm);
            }
            .section-card {
                padding: 24px 18px;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero .subhead {
                font-size: 1rem;
            }
            .breadcrumb {
                font-size: 0.78rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 14px;
            }
            .section-card {
                padding: 18px 14px;
            }
            .hero {
                padding: 30px 0 24px;
            }
            .hero .meta-line {
                flex-direction: column;
                gap: 6px;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .star-rating {
                font-size: 1.3rem;
            }
        }
        .text-accent {
            color: var(--accent);
        }
        .text-secondary {
            color: var(--secondary);
        }
        .text-muted {
            color: var(--text-muted);
        }
        .mt-8 {
            margin-top: 8px;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .flex {
            display: flex;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }
        .gap-8 {
            gap: 8px;
        }
        .gap-16 {
            gap: 16px;
        }
        .items-center {
            align-items: center;
        }
        .justify-between {
            justify-content: space-between;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }