*,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', 'Roboto', system-ui, -apple-system, sans-serif;
            background: #0b0e14;
            color: #e8edf5;
            line-height: 1.75;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: #7aa9ff;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #b0ccff;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 600;
            line-height: 1.3;
            color: #f0f4fe;
            margin-top: 1.8em;
            margin-bottom: 0.6em;
        }
        h1 {
            font-size: 2.4rem;
            margin-top: 0.4em;
            border-bottom: 2px solid #2a3a5c;
            padding-bottom: 0.3em;
        }
        h2 {
            font-size: 1.8rem;
            border-left: 4px solid #4f7df3;
            padding-left: 0.75rem;
        }
        h3 {
            font-size: 1.35rem;
            color: #d0e0ff;
        }
        h4 {
            font-size: 1.1rem;
            color: #b8ceff;
        }
        p {
            margin-bottom: 1.2em;
        }
        ul,
        ol {
            margin: 0.8em 0 1.2em 1.8em;
        }
        li {
            margin-bottom: 0.4em;
        }
        blockquote {
            border-left: 4px solid #4f7df3;
            background: #141b26;
            padding: 1em 1.5em;
            margin: 1.5em 0;
            border-radius: 0 8px 8px 0;
            font-style: italic;
            color: #c8d8f0;
        }
        strong {
            color: #ffd866;
            font-weight: 700;
        }
        .container {
            max-width: 1120px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: #111820;
            border-bottom: 1px solid #2a3650;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(8px);
            background: rgba(11, 14, 20, 0.96);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 700;
            color: #f0f4fe;
            background: linear-gradient(135deg, #7aa9ff, #c084fc);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            transition: opacity 0.2s;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid #3a4a6a;
            color: #e8edf5;
            font-size: 1.5rem;
            padding: 0.3rem 0.8rem;
            border-radius: 6px;
            cursor: pointer;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: #1f2a3a;
        }
        .main-nav {
            display: flex;
            gap: 1.2rem;
            align-items: center;
            flex-wrap: wrap;
        }
        .main-nav a {
            font-size: 0.95rem;
            color: #b8ceff;
            padding: 0.3rem 0.6rem;
            border-radius: 4px;
            transition: background 0.2s, color 0.2s;
        }
        .main-nav a:hover {
            background: #1f2a3a;
            color: #fff;
            text-decoration: none;
        }
        .breadcrumb {
            padding: 0.6rem 0;
            font-size: 0.85rem;
            color: #7a8aaa;
            border-bottom: 1px solid #1e2838;
            margin-bottom: 1.2rem;
        }
        .breadcrumb a {
            color: #7aa9ff;
        }
        .breadcrumb a:hover {
            color: #b0ccff;
        }
        .breadcrumb span {
            color: #5a6a8a;
        }
        .search-section {
            background: #141b26;
            border-radius: 12px;
            padding: 1.6rem 2rem;
            margin: 1.8rem 0;
            border: 1px solid #2a3650;
        }
        .search-section form {
            display: flex;
            gap: 0.8rem;
            flex-wrap: wrap;
            align-items: center;
        }
        .search-section input[type="text"] {
            flex: 1;
            min-width: 200px;
            padding: 0.75rem 1.2rem;
            border-radius: 8px;
            border: 1px solid #3a4a6a;
            background: #0b0e14;
            color: #e8edf5;
            font-size: 1rem;
            transition: border 0.2s;
        }
        .search-section input[type="text"]:focus {
            outline: none;
            border-color: #7aa9ff;
        }
        .search-section button {
            padding: 0.75rem 1.6rem;
            border-radius: 8px;
            border: none;
            background: #4f7df3;
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-section button:hover {
            background: #3b66d9;
            transform: scale(1.02);
        }
        .interaction-panel {
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
            margin: 2rem 0;
            padding: 2rem;
            background: #141b26;
            border-radius: 12px;
            border: 1px solid #2a3650;
        }
        .rating-box,
        .comment-box {
            flex: 1 1 280px;
        }
        .rating-box h3,
        .comment-box h3 {
            margin-top: 0;
            font-size: 1.2rem;
            border: none;
            padding: 0;
        }
        .star-rating {
            display: flex;
            gap: 0.3rem;
            font-size: 1.8rem;
            color: #4a5a7a;
            cursor: pointer;
            direction: rtl;
            justify-content: flex-end;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            transition: color 0.2s, transform 0.1s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #ffb347;
            transform: scale(1.1);
        }
        .rating-form button,
        .comment-box button {
            margin-top: 0.8rem;
            padding: 0.6rem 1.4rem;
            border-radius: 8px;
            border: none;
            background: #4f7df3;
            color: #fff;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
        }
        .rating-form button:hover,
        .comment-box button:hover {
            background: #3b66d9;
        }
        .comment-box textarea {
            width: 100%;
            padding: 0.8rem 1rem;
            border-radius: 8px;
            border: 1px solid #3a4a6a;
            background: #0b0e14;
            color: #e8edf5;
            font-size: 0.95rem;
            min-height: 100px;
            resize: vertical;
            font-family: inherit;
        }
        .comment-box textarea:focus {
            outline: none;
            border-color: #7aa9ff;
        }
        .feature-image {
            margin: 2rem 0;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.6);
        }
        .feature-image img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .feature-image figcaption {
            padding: 0.6rem 1rem;
            background: #141b26;
            font-size: 0.85rem;
            color: #8a9ab8;
            text-align: center;
            border-top: 1px solid #2a3650;
        }
        .site-footer {
            margin-top: auto;
            background: #0d121c;
            border-top: 1px solid #2a3650;
            padding: 2.5rem 0 1.5rem;
        }
        .footer-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 2rem;
        }
        friend-link {
            display: block;
            padding: 1.2rem 1.6rem;
            background: #141b26;
            border-radius: 10px;
            border: 1px solid #2a3650;
            font-style: normal;
        }
        friend-link a {
            display: inline-block;
            margin: 0.3rem 1rem 0.3rem 0;
            color: #7aa9ff;
        }
        friend-link a:hover {
            color: #b0ccff;
        }
        .copyright {
            margin-top: 1.5rem;
            text-align: center;
            font-size: 0.85rem;
            color: #5a6a8a;
            border-top: 1px solid #1e2838;
            padding-top: 1.2rem;
        }
        .copyright a {
            color: #7aa9ff;
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 0.4rem;
                padding: 0.8rem 0 0.4rem;
                border-top: 1px solid #2a3650;
                margin-top: 0.6rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.5rem 0.8rem;
                border-radius: 4px;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .interaction-panel {
                padding: 1.2rem;
                gap: 1.5rem;
            }
            .search-section {
                padding: 1.2rem;
            }
            .search-section form {
                flex-direction: column;
            }
            .search-section input[type="text"] {
                min-width: auto;
                width: 100%;
            }
            .search-section button {
                width: 100%;
                justify-content: center;
            }
            .star-rating {
                font-size: 1.5rem;
                justify-content: center;
            }
            .footer-inner {
                flex-direction: column;
                gap: 1.2rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            h1 {
                font-size: 1.5rem;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
        }
        .text-muted {
            color: #7a8aaa;
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .flex-center {
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .gap-1 {
            gap: 1rem;
        }
        .last-updated {
            display: inline-block;
            font-size: 0.85rem;
            color: #6a7a9a;
            background: #141b26;
            padding: 0.2rem 1rem;
            border-radius: 20px;
            border: 1px solid #2a3650;
        }
        .content-article {
            background: #0f1520;
            border-radius: 16px;
            padding: 2rem 2.4rem;
            border: 1px solid #1e2838;
        }
        .content-article p,
        .content-article li {
            font-size: 1.02rem;
            color: #dce4f0;
        }
        .content-article ul,
        .content-article ol {
            padding-left: 0.8rem;
        }
        .content-article .emoji-big {
            font-size: 1.4rem;
            margin-right: 0.3rem;
        }
        .highlight-box {
            background: #1a2438;
            border-left: 4px solid #ffb347;
            padding: 1.2rem 1.6rem;
            border-radius: 0 10px 10px 0;
            margin: 1.6rem 0;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.6rem 0;
        }
        .table-wrap table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        .table-wrap th,
        .table-wrap td {
            padding: 0.7rem 1rem;
            border: 1px solid #2a3650;
            text-align: left;
        }
        .table-wrap th {
            background: #1a2438;
            color: #b0ccff;
            font-weight: 600;
        }
        .table-wrap td {
            background: #0f1520;
        }
        .toc {
            background: #141b26;
            border-radius: 10px;
            padding: 1.2rem 1.8rem;
            border: 1px solid #2a3650;
            margin: 1.6rem 0;
        }
        .toc h3 {
            margin-top: 0;
            font-size: 1.1rem;
            border: none;
            padding: 0;
        }
        .toc ul {
            list-style: none;
            margin: 0.6em 0 0;
            padding: 0;
        }
        .toc li {
            padding: 0.2rem 0;
        }
        .toc a {
            color: #8ab0ff;
        }
        .toc a:hover {
            color: #b0ccff;
        }
        .schema-hidden {
            display: none;
        }