*,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --bg-primary: #0a0a0f;
            --bg-secondary: #12121a;
            --bg-card: #1a1a2e;
            --text-primary: #e8e8f0;
            --text-secondary: #a0a0b8;
            --accent-cyan: #00f0ff;
            --accent-magenta: #ff00ff;
            --accent-gold: #ffd700;
            --accent-green: #00ff88;
            --border-color: #2a2a4a;
            --font-mono: 'Courier New', Courier, monospace;
            --font-sans: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            --shadow-neon: 0 0 20px rgba(0, 240, 255, 0.15);
            --radius: 12px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        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;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent-magenta);
            text-shadow: 0 0 8px rgba(255, 0, 255, 0.3);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        ::selection {
            background: var(--accent-cyan);
            color: #000;
        }
        :focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
        }
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-primary);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--accent-cyan);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: var(--bg-secondary);
            border-bottom: 2px solid var(--border-color);
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(12px);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .my-logo {
            font-family: var(--font-mono);
            font-size: 1.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-magenta));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -1px;
            text-transform: uppercase;
            transition: transform var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .my-logo:hover {
            transform: scale(1.03);
        }
        .my-logo i {
            -webkit-text-fill-color: var(--accent-cyan);
            font-size: 1.6rem;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 8px;
            flex-wrap: wrap;
            align-items: center;
        }
        .nav-list a {
            padding: 8px 16px;
            border-radius: 6px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            border: 1px solid transparent;
            transition: all var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list a:hover,
        .nav-list a.active {
            color: var(--accent-cyan);
            border-color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.06);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.08);
        }
        .nav-list a i {
            font-size: 0.85rem;
        }
        .hamburger {
            display: none;
            background: none;
            border: 2px solid var(--border-color);
            color: var(--text-primary);
            font-size: 1.5rem;
            padding: 6px 12px;
            border-radius: 6px;
            cursor: pointer;
            transition: all var(--transition);
        }
        .hamburger:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
        }
        .breadcrumb {
            padding: 14px 0 6px;
            font-size: 0.85rem;
            color: var(--text-secondary);
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            align-items: center;
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--accent-cyan);
        }
        .breadcrumb span {
            color: var(--text-secondary);
            margin: 0 4px;
        }
        .breadcrumb .current {
            color: var(--accent-gold);
            font-weight: 600;
        }
        .hero {
            padding: 48px 0 32px;
            text-align: center;
            background: radial-gradient(ellipse at 50% 0%, rgba(0, 240, 255, 0.04), transparent 70%);
        }
        .hero h1 {
            font-size: clamp(2.2rem, 6vw, 4rem);
            font-weight: 900;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-magenta), var(--accent-gold));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.15;
            margin-bottom: 16px;
            letter-spacing: -1px;
        }
        .hero .subtitle {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 720px;
            margin: 0 auto 20px;
            font-weight: 300;
        }
        .hero .meta-badge {
            display: inline-flex;
            gap: 20px;
            flex-wrap: wrap;
            justify-content: center;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }
        .hero .meta-badge span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .hero .meta-badge i {
            color: var(--accent-cyan);
        }
        section {
            padding: 40px 0;
        }
        .section-title {
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
            font-weight: 800;
            color: var(--accent-cyan);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 12px;
            border-bottom: 2px solid var(--border-color);
            padding-bottom: 12px;
        }
        .section-title i {
            color: var(--accent-magenta);
            font-size: 1.4rem;
        }
        .section-subtitle {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin: 28px 0 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .section-subtitle i {
            font-size: 1rem;
            color: var(--accent-magenta);
        }
        .section-subsub {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-primary);
            margin: 20px 0 8px;
            padding-left: 12px;
            border-left: 3px solid var(--accent-magenta);
        }
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 20px;
            margin: 20px 0;
        }
        .card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 24px 20px;
            transition: all var(--transition);
        }
        .card:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-neon);
            transform: translateY(-4px);
        }
        .card h4 {
            font-size: 1.1rem;
            color: var(--accent-cyan);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
        }
        .feature-image {
            margin: 32px 0;
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-neon);
            background: var(--bg-card);
        }
        .feature-image img {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
        }
        .feature-image figcaption {
            padding: 12px 20px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            font-style: italic;
            border-top: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .feature-image figcaption i {
            color: var(--accent-gold);
        }
        .content p {
            margin-bottom: 16px;
            color: var(--text-secondary);
            font-size: 1rem;
            line-height: 1.8;
        }
        .content strong {
            color: var(--text-primary);
            font-weight: 700;
        }
        .content em {
            color: var(--accent-gold);
            font-style: italic;
        }
        .content ul,
        .content ol {
            margin: 12px 0 20px 24px;
            color: var(--text-secondary);
        }
        .content li {
            margin-bottom: 6px;
            line-height: 1.7;
        }
        .content .highlight-box {
            background: var(--bg-card);
            border-left: 4px solid var(--accent-cyan);
            padding: 20px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .content .highlight-box.gold {
            border-left-color: var(--accent-gold);
        }
        .content .highlight-box.magenta {
            border-left-color: var(--accent-magenta);
        }
        .content .highlight-box.green {
            border-left-color: var(--accent-green);
        }
        .search-section {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 28px;
            margin: 40px 0;
            border: 1px solid var(--border-color);
        }
        .search-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            align-items: center;
        }
        .search-form input {
            flex: 1;
            min-width: 200px;
            padding: 14px 18px;
            border-radius: 6px;
            border: 1px solid var(--border-color);
            background: var(--bg-primary);
            color: var(--text-primary);
            font-size: 1rem;
            transition: border-color var(--transition);
        }
        .search-form input:focus {
            border-color: var(--accent-cyan);
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.1);
        }
        .search-form button {
            padding: 14px 28px;
            border: none;
            border-radius: 6px;
            background: linear-gradient(135deg, var(--accent-cyan), #0090aa);
            color: #000;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: all var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            transform: scale(1.03);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.3);
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin: 40px 0;
        }
        .interaction-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 28px 24px;
        }
        .interaction-card h3 {
            font-size: 1.2rem;
            color: var(--accent-cyan);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .interaction-card textarea {
            width: 100%;
            padding: 14px 16px;
            border-radius: 6px;
            border: 1px solid var(--border-color);
            background: var(--bg-primary);
            color: var(--text-primary);
            font-size: 0.95rem;
            resize: vertical;
            min-height: 100px;
            font-family: var(--font-sans);
            transition: border-color var(--transition);
        }
        .interaction-card textarea:focus {
            border-color: var(--accent-cyan);
            outline: none;
        }
        .interaction-card input[type="text"],
        .interaction-card input[type="number"] {
            width: 100%;
            padding: 12px 16px;
            border-radius: 6px;
            border: 1px solid var(--border-color);
            background: var(--bg-primary);
            color: var(--text-primary);
            font-size: 0.95rem;
            transition: border-color var(--transition);
        }
        .interaction-card input:focus {
            border-color: var(--accent-cyan);
            outline: none;
        }
        .interaction-card .btn {
            padding: 12px 24px;
            border: none;
            border-radius: 6px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 12px;
        }
        .interaction-card .btn-primary {
            background: linear-gradient(135deg, var(--accent-cyan), #0090aa);
            color: #000;
        }
        .interaction-card .btn-primary:hover {
            transform: scale(1.02);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.25);
        }
        .interaction-card .btn-magenta {
            background: linear-gradient(135deg, var(--accent-magenta), #aa00aa);
            color: #fff;
        }
        .interaction-card .btn-magenta:hover {
            transform: scale(1.02);
            box-shadow: 0 0 20px rgba(255, 0, 255, 0.25);
        }
        .score-display {
            display: flex;
            align-items: center;
            gap: 12px;
            margin: 12px 0;
            font-size: 1.2rem;
        }
        .score-display .stars {
            color: var(--accent-gold);
            letter-spacing: 2px;
        }
        .score-display .value {
            font-weight: 700;
            color: var(--text-primary);
        }
        .site-footer {
            background: var(--bg-secondary);
            border-top: 2px solid var(--border-color);
            padding: 40px 0 24px;
            margin-top: 48px;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
        }
        .footer-inner h4 {
            font-size: 1.1rem;
            color: var(--accent-cyan);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-inner p,
        .footer-inner a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.8;
        }
        .footer-inner a:hover {
            color: var(--accent-cyan);
        }
        friend-link {
            display: block;
            margin-top: 8px;
        }
        friend-link a {
            display: inline-block;
            padding: 4px 0;
        }
        .copyright {
            margin-top: 32px;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-secondary);
        }
        .copyright strong {
            color: var(--accent-gold);
        }
        @media (max-width: 900px) {
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
            .interaction-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-list {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--bg-secondary);
                padding: 16px 0;
                border-top: 1px solid var(--border-color);
                margin-top: 12px;
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list a {
                padding: 12px 20px;
                width: 100%;
                border-radius: 0;
                border: none;
                border-left: 3px solid transparent;
            }
            .nav-list a:hover {
                border-left-color: var(--accent-cyan);
                background: rgba(0, 240, 255, 0.04);
            }
            .header-inner {
                align-items: center;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form input {
                width: 100%;
                min-width: unset;
            }
            .search-form button {
                width: 100%;
                justify-content: center;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .section-title {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .hero {
                padding: 28px 0 20px;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            section {
                padding: 24px 0;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .interaction-card {
                padding: 20px 16px;
            }
        }
        .text-gradient {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-magenta));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .mt-20 {
            margin-top: 20px;
        }
        .mb-20 {
            margin-bottom: 20px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .text-center {
            text-align: center;
        }
        .fade-in {
            animation: fadeIn 0.6s ease forwards;
        }
        @keyframes fadeIn {
            0% {
                opacity: 0;
                transform: translateY(12px);
            }
            100% {
                opacity: 1;
                transform: translateY(0);
            }
        }