* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', sans-serif;
            background: #0b0e14;
            color: #e8edf5;
            line-height: 1.8;
            padding: 0 16px;
            max-width: 1280px;
            margin: 0 auto;
            min-height: 100vh;
        }
        a {
            color: #7ec8e3;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: #b3e4ff;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            margin-top: 1.8em;
            margin-bottom: 0.5em;
            color: #f0f6fc;
            letter-spacing: 0.01em;
        }
        h1 {
            font-size: 2.6rem;
            border-bottom: 3px solid #e94560;
            padding-bottom: 0.3em;
            margin-top: 0.6em;
        }
        h2 {
            font-size: 2rem;
            border-left: 6px solid #e94560;
            padding-left: 18px;
            margin-top: 2.2em;
        }
        h3 {
            font-size: 1.5rem;
            color: #cbd9e8;
            margin-top: 1.8em;
        }
        h4 {
            font-size: 1.2rem;
            color: #b0c4db;
            margin-top: 1.4em;
        }
        p {
            margin-bottom: 1.2em;
            font-size: 1.05rem;
            color: #d6e0ed;
        }
        ul,
        ol {
            margin: 0.8em 0 1.5em 1.8em;
            color: #d6e0ed;
        }
        li {
            margin-bottom: 0.5em;
        }
        strong {
            color: #f5c842;
            font-weight: 700;
        }
        em {
            color: #b3d9ff;
            font-style: italic;
        }
        hr {
            border: none;
            border-top: 1px solid #2a3344;
            margin: 3em 0;
        }
        blockquote {
            border-left: 5px solid #e94560;
            background: #141c28;
            padding: 1.2em 1.8em;
            margin: 1.8em 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #c8d9ec;
        }
        code {
            background: #1e2738;
            padding: 0.2em 0.6em;
            border-radius: 6px;
            font-size: 0.9em;
            color: #f5c842;
        }
        header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 20px 0 14px;
            border-bottom: 1px solid #2a3344;
            position: relative;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            background: linear-gradient(135deg, #e94560, #f5c842);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.03em;
            text-transform: uppercase;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            font-size: 1.8rem;
            -webkit-text-fill-color: #e94560;
            color: #e94560;
        }
        .my-logo:hover {
            opacity: 0.9;
            text-decoration: none;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 8px 20px;
            flex-wrap: wrap;
            margin: 0;
            padding: 0;
        }
        .nav-list li a {
            padding: 6px 10px;
            border-radius: 8px;
            font-weight: 500;
            font-size: 0.95rem;
            color: #c8d9ec;
            transition: background 0.2s, color 0.2s;
        }
        .nav-list li a:hover {
            background: #1e2a3a;
            color: #f5c842;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #e8edf5;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 8px;
            transition: color 0.2s;
        }
        .hamburger:hover {
            color: #f5c842;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 12px 0 8px;
            margin: 0;
            font-size: 0.9rem;
            color: #8899b0;
        }
        .breadcrumb li+li::before {
            content: "›";
            padding: 0 10px;
            color: #556;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #7ec8e3;
        }
        .breadcrumb li.active {
            color: #f5c842;
        }
        .search-section {
            background: #111a26;
            border-radius: 16px;
            padding: 28px 32px;
            margin: 28px 0 32px;
            border: 1px solid #253040;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
        }
        .search-section label {
            font-weight: 600;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            gap: 8px;
            color: #b3d9ff;
        }
        .search-form {
            display: flex;
            flex: 1 1 300px;
            gap: 8px;
        }
        .search-form input {
            flex: 1;
            padding: 12px 18px;
            border-radius: 40px;
            border: 1px solid #2a3a4e;
            background: #0d141f;
            color: #e8edf5;
            font-size: 1rem;
            outline: none;
            transition: border 0.3s;
        }
        .search-form input:focus {
            border-color: #e94560;
        }
        .search-form button {
            background: #e94560;
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 12px 28px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .search-form button:hover {
            background: #d63c54;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin: 20px 0 40px;
        }
        .main-article {
            min-width: 0;
        }
        .sidebar {
            position: sticky;
            top: 30px;
            align-self: start;
            background: #111a26;
            border-radius: 16px;
            padding: 24px 20px;
            border: 1px solid #253040;
            max-height: calc(100vh - 80px);
            overflow-y: auto;
        }
        .sidebar h3 {
            font-size: 1.2rem;
            margin-top: 0;
            color: #f5c842;
            border-bottom: 1px solid #2a3a4e;
            padding-bottom: 10px;
        }
        .sidebar ul {
            list-style: none;
            margin: 12px 0 0;
            padding: 0;
        }
        .sidebar ul li {
            padding: 6px 0;
            border-bottom: 1px solid #1a2535;
        }
        .sidebar ul li a {
            font-size: 0.95rem;
        }
        .featured-figure {
            margin: 2em 0;
            border-radius: 14px;
            overflow: hidden;
            background: #0d141f;
            padding: 6px;
            border: 1px solid #2a3a4e;
        }
        .featured-figure img {
            border-radius: 10px;
            width: 100%;
        }
        .featured-figure figcaption {
            text-align: center;
            padding: 12px 10px 6px;
            font-size: 0.9rem;
            color: #8899b0;
            font-style: italic;
        }
        .interaction-area {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            margin: 3em 0 2em;
        }
        .rating-box,
        .comment-box {
            background: #111a26;
            border-radius: 16px;
            padding: 24px 28px;
            border: 1px solid #253040;
        }
        .rating-box h3,
        .comment-box h3 {
            margin-top: 0;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            gap: 10px;
            color: #f5c842;
        }
        .star-rating {
            display: flex;
            gap: 6px;
            font-size: 2rem;
            margin: 12px 0 16px;
            cursor: pointer;
            direction: rtl;
            justify-content: flex-end;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: #3a4a5e;
            transition: color 0.2s;
            cursor: pointer;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f5c842;
        }
        .rating-box form,
        .comment-box form {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .rating-box form input,
        .comment-box form input,
        .comment-box form textarea {
            padding: 10px 16px;
            border-radius: 10px;
            border: 1px solid #2a3a4e;
            background: #0d141f;
            color: #e8edf5;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.3s;
            width: 100%;
        }
        .rating-box form input:focus,
        .comment-box form input:focus,
        .comment-box form textarea:focus {
            border-color: #e94560;
        }
        .comment-box form textarea {
            min-height: 90px;
            resize: vertical;
        }
        .btn-submit {
            background: #e94560;
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 12px 24px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s;
            align-self: flex-start;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .btn-submit:hover {
            background: #d63c54;
        }
        footer {
            border-top: 1px solid #2a3344;
            padding: 32px 0 28px;
            margin-top: 48px;
        }
        friend-link {
            display: block;
            background: #111a26;
            border-radius: 14px;
            padding: 22px 28px;
            border: 1px solid #253040;
            margin-bottom: 24px;
        }
        friend-link::before {
            content: "🌐 Friendly Links";
            display: block;
            font-size: 1.2rem;
            font-weight: 700;
            color: #f5c842;
            margin-bottom: 14px;
        }
        friend-link a {
            display: inline-block;
            margin: 4px 12px 4px 0;
            padding: 4px 14px;
            background: #1a2535;
            border-radius: 30px;
            font-size: 0.9rem;
            transition: background 0.2s, color 0.2s;
        }
        friend-link a:hover {
            background: #e94560;
            color: #fff;
            text-decoration: none;
        }
        .copyright {
            text-align: center;
            color: #6a7a90;
            font-size: 0.9rem;
            padding: 12px 0 4px;
            border-top: 1px solid #1e2738;
            margin-top: 12px;
        }
        .copyright strong {
            color: #b3d9ff;
        }
        @media (max-width: 900px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                max-height: none;
                order: 2;
                margin-top: 20px;
            }
            .interaction-area {
                grid-template-columns: 1fr;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            h3 {
                font-size: 1.3rem;
            }
        }
        @media (max-width: 700px) {
            .nav-list {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #0d141f;
                border-radius: 12px;
                padding: 16px 12px;
                margin-top: 12px;
                border: 1px solid #2a3a4e;
            }
            .nav-list.open {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .nav-wrapper {
                width: 100%;
                justify-content: space-between;
            }
            .search-section {
                flex-direction: column;
                align-items: stretch;
                padding: 20px;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                justify-content: center;
            }
            header {
                flex-wrap: wrap;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .breadcrumb {
                font-size: 0.8rem;
            }
            .star-rating {
                font-size: 1.6rem;
            }
            friend-link a {
                display: block;
                margin: 6px 0;
            }
        }
        @media (max-width: 480px) {
            body {
                padding: 0 10px;
            }
            h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.3rem;
                padding-left: 12px;
            }
            h3 {
                font-size: 1.1rem;
            }
            .rating-box,
            .comment-box {
                padding: 18px 16px;
            }
        }
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: #0b0e14;
        }
        ::-webkit-scrollbar-thumb {
            background: #2a3a4e;
            border-radius: 8px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #3a4a5e;
        }
        .last-updated {
            display: inline-block;
            background: #1a2535;
            padding: 4px 16px;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #8899b0;
            margin-bottom: 16px;
        }
        .toc-list {
            background: #0d141f;
            border-radius: 12px;
            padding: 16px 20px 16px 36px;
            border: 1px solid #1e2738;
            margin: 1.2em 0 2em;
        }
        .toc-list li {
            margin-bottom: 0.3em;
        }
        .toc-list a {
            font-weight: 500;
        }