* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', 'Roboto', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #0a0a0f;
            color: #e0e0e0;
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }
        a {
            color: #00f0ff;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #ff00ff;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.2;
            color: #fff;
            margin-top: 1.8rem;
            margin-bottom: 0.8rem;
        }
        h1 {
            font-size: 2.6rem;
            background: linear-gradient(135deg, #ff00ff, #00f0ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        h2 {
            font-size: 2rem;
            border-left: 5px solid #ff00ff;
            padding-left: 1rem;
            margin-top: 2.8rem;
        }
        h3 {
            font-size: 1.5rem;
            color: #f0f0ff;
        }
        h4 {
            font-size: 1.2rem;
            color: #ccc;
        }
        p {
            margin-bottom: 1.2rem;
            color: #d0d0d0;
        }
        strong,
        b {
            color: #fff;
            font-weight: 700;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: #0a0a0f;
        }
        ::-webkit-scrollbar-thumb {
            background: #ff00ff66;
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #ff00ffaa;
        }
        header {
            background: #0d0d1a;
            border-bottom: 2px solid #ff00ff33;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.8rem 1.5rem;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 900;
            letter-spacing: 4px;
            text-transform: uppercase;
            background: linear-gradient(135deg, #ff00ff, #00f0ff, #ff00ff);
            background-size: 200% 200%;
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            animation: shimmer 4s ease-in-out infinite;
            display: inline-block;
            font-family: 'Segoe UI', 'Arial Black', sans-serif;
        }
        .my-logo small {
            font-size: 0.7rem;
            display: block;
            -webkit-text-fill-color: #888;
            letter-spacing: 1px;
            font-weight: 300;
        }
        @keyframes shimmer {
            0%,
            100% {
                background-position: 0% 50%;
            }
            50% {
                background-position: 100% 50%;
            }
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid #ff00ff66;
            color: #fff;
            font-size: 1.6rem;
            padding: 0.3rem 0.8rem;
            border-radius: 6px;
            cursor: pointer;
            transition: 0.2s;
        }
        .nav-toggle:hover {
            border-color: #ff00ff;
            background: #ff00ff11;
        }
        nav {
            display: flex;
            gap: 0.2rem 1.2rem;
            flex-wrap: wrap;
            align-items: center;
        }
        nav a {
            padding: 0.3rem 0.6rem;
            border-radius: 4px;
            font-weight: 500;
            font-size: 0.9rem;
            color: #ccc;
            transition: 0.2s;
        }
        nav a:hover {
            color: #fff;
            background: #ff00ff22;
            text-decoration: none;
        }
        .breadcrumb {
            padding: 0.6rem 0 0.2rem 0;
            font-size: 0.85rem;
            color: #999;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
        }
        .breadcrumb a {
            color: #00f0ff;
        }
        .breadcrumb span {
            color: #666;
        }
        .hero {
            padding: 2.5rem 0 1.5rem 0;
            text-align: center;
            background: radial-gradient(ellipse at center, #1a0a2e 0%, #0a0a0f 70%);
        }
        .hero h1 {
            margin-top: 0;
            font-size: 3rem;
        }
        .hero .sub {
            color: #aaa;
            font-size: 1.1rem;
            max-width: 700px;
            margin: 0.5rem auto 1.2rem;
        }
        .hero .meta {
            font-size: 0.9rem;
            color: #777;
            display: flex;
            justify-content: center;
            gap: 1.2rem;
            flex-wrap: wrap;
        }
        .hero .meta i {
            margin-right: 0.3rem;
        }
        .featured-image {
            margin: 2rem 0;
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid #ff00ff33;
            box-shadow: 0 0 40px #ff00ff11;
        }
        .featured-image img {
            width: 100%;
            height: auto;
            display: block;
        }
        .featured-image figcaption {
            background: #111;
            padding: 0.6rem 1rem;
            font-size: 0.85rem;
            color: #aaa;
            text-align: center;
            border-top: 1px solid #222;
        }
        .content-area {
            padding: 1.5rem 0 3rem;
        }
        .content-area .container {
            max-width: 880px;
        }
        .content-area p,
        .content-area li {
            font-size: 1.05rem;
        }
        .content-area blockquote {
            border-left: 4px solid #ff00ff;
            background: #1a0a2e44;
            padding: 0.8rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 8px 8px 0;
            font-style: italic;
            color: #c0c0c0;
        }
        .content-area blockquote cite {
            display: block;
            margin-top: 0.5rem;
            font-size: 0.85rem;
            color: #888;
        }
        .content-area .highlight-box {
            background: #111122;
            border: 1px solid #00f0ff33;
            border-radius: 10px;
            padding: 1.2rem 1.5rem;
            margin: 1.8rem 0;
        }
        .content-area .highlight-box h4 {
            margin-top: 0;
            color: #00f0ff;
        }
        .interactive-section {
            background: #0d0d1a;
            padding: 2.5rem 0;
            border-top: 1px solid #222;
            border-bottom: 1px solid #222;
        }
        .interactive-section .container {
            max-width: 880px;
        }
        .interactive-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 1.8rem;
            margin-top: 1.5rem;
        }
        @media (max-width: 820px) {
            .interactive-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 540px) {
            .interactive-grid {
                grid-template-columns: 1fr;
            }
        }
        .card-form {
            background: #111122;
            border-radius: 12px;
            padding: 1.5rem;
            border: 1px solid #222244;
            transition: 0.3s;
        }
        .card-form:hover {
            border-color: #ff00ff44;
            box-shadow: 0 0 30px #ff00ff08;
        }
        .card-form h3 {
            margin-top: 0;
            font-size: 1.3rem;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .card-form h3 i {
            color: #ff00ff;
        }
        .card-form input,
        .card-form textarea,
        .card-form select {
            width: 100%;
            padding: 0.7rem 0.9rem;
            margin-bottom: 0.8rem;
            border-radius: 6px;
            border: 1px solid #333;
            background: #0a0a15;
            color: #eee;
            font-size: 0.95rem;
            transition: 0.2s;
        }
        .card-form input:focus,
        .card-form textarea:focus,
        .card-form select:focus {
            outline: none;
            border-color: #ff00ff;
            box-shadow: 0 0 0 3px #ff00ff22;
        }
        .card-form textarea {
            min-height: 80px;
            resize: vertical;
        }
        .card-form .btn {
            background: linear-gradient(135deg, #ff00ff, #cc00cc);
            color: #fff;
            border: none;
            padding: 0.7rem 1.5rem;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
            font-size: 0.95rem;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .card-form .btn:hover {
            transform: scale(1.02);
            box-shadow: 0 0 20px #ff00ff44;
        }
        .card-form .btn:active {
            transform: scale(0.98);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.2rem;
            margin-bottom: 0.8rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #444;
            cursor: pointer;
            transition: 0.2s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #ffd700;
        }
        friend-link {
            display: block;
            padding: 2rem 0 1.5rem;
            border-top: 1px solid #222;
        }
        friend-link .container {
            max-width: 880px;
        }
        friend-link h3 {
            margin-top: 0;
            font-size: 1.2rem;
            color: #999;
            text-transform: uppercase;
            letter-spacing: 2px;
        }
        friend-link ul {
            list-style: none;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem 1.8rem;
            margin-top: 0.8rem;
        }
        friend-link li {
            margin-bottom: 0.2rem;
        }
        friend-link a {
            color: #888;
            font-size: 0.9rem;
            transition: 0.2s;
        }
        friend-link a:hover {
            color: #00f0ff;
        }
        footer {
            background: #080812;
            padding: 1.8rem 0;
            border-top: 1px solid #181828;
            text-align: center;
            font-size: 0.85rem;
            color: #666;
        }
        footer .container {
            max-width: 880px;
        }
        footer a {
            color: #888;
        }
        footer a:hover {
            color: #00f0ff;
        }
        footer .copyright {
            margin-top: 0.3rem;
            letter-spacing: 0.5px;
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: inline-block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding: 0.8rem 0 0.2rem;
                gap: 0.3rem;
            }
            nav.open {
                display: flex;
            }
            nav a {
                padding: 0.5rem 0.8rem;
                border-bottom: 1px solid #1a1a2e;
            }
            .header-inner {
                align-items: center;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
            .content-area p,
            .content-area li {
                font-size: 0.95rem;
            }
            .interactive-grid {
                gap: 1rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 0.9rem;
            }
            .hero {
                padding: 1.5rem 0 1rem;
            }
            .hero .meta {
                flex-direction: column;
                gap: 0.3rem;
            }
            .star-rating label {
                font-size: 1.4rem;
            }
            .card-form {
                padding: 1rem;
            }
            friend-link ul {
                flex-direction: column;
                gap: 0.3rem;
            }
        }
        .text-gradient {
            background: linear-gradient(135deg, #ff00ff, #00f0ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .gap-1 {
            gap: 1rem;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .toc {
            background: #0d0d1a;
            border: 1px solid #222244;
            border-radius: 10px;
            padding: 1.2rem 1.8rem;
            margin: 1.8rem 0 2.2rem;
        }
        .toc h3 {
            margin-top: 0;
            font-size: 1.2rem;
            color: #00f0ff;
        }
        .toc ul {
            list-style: none;
            padding: 0;
            columns: 2;
            column-gap: 2rem;
        }
        .toc li {
            margin-bottom: 0.3rem;
            break-inside: avoid;
        }
        .toc a {
            color: #bbb;
            font-size: 0.9rem;
        }
        .toc a:hover {
            color: #ff00ff;
        }
        @media (max-width: 600px) {
            .toc ul {
                columns: 1;
            }
        }
        .tag {
            display: inline-block;
            background: #ff00ff11;
            color: #ff00ff;
            border: 1px solid #ff00ff33;
            border-radius: 20px;
            padding: 0.1rem 0.9rem;
            font-size: 0.75rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
        }