*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f8fafc;
            color: #1e293b;
            line-height: 1.75;
            padding: 0 1rem;
        }
        a {
            color: #1d4ed8;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #0f3b8e;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        p {
            margin-bottom: 1.25rem;
            font-size: 1.0625rem;
            word-break: break-word;
        }
        h1,
        h2,
        h3,
        h4 {
            font-weight: 700;
            line-height: 1.3;
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            color: #0f172a;
        }
        h1 {
            font-size: 2.25rem;
            border-bottom: 4px solid #2563eb;
            padding-bottom: 0.5rem;
            display: inline-block;
        }
        h2 {
            font-size: 1.75rem;
            border-left: 5px solid #2563eb;
            padding-left: 1rem;
            margin-top: 3rem;
        }
        h3 {
            font-size: 1.375rem;
            margin-top: 2rem;
            color: #1e293b;
        }
        h4 {
            font-size: 1.125rem;
            margin-top: 1.5rem;
            color: #334155;
        }
        ul,
        ol {
            margin: 0 0 1.5rem 1.75rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        strong,
        b {
            color: #0f172a;
            font-weight: 700;
        }
        em {
            font-style: italic;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            border-radius: 1.5rem 1.5rem 0 0;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            padding: 1.25rem 1.5rem 2rem;
        }
        @media (min-width: 768px) {
            .container {
                padding: 2rem 2.5rem 3rem;
            }
        }
        .site-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 1rem 0 0.75rem;
            border-bottom: 2px solid #e2e8f0;
            position: relative;
        }
        .my-logo {
            font-size: 1.75rem;
            font-weight: 800;
            background: linear-gradient(135deg, #1e3a8a, #2563eb);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.02em;
            display: inline-block;
            transition: transform 0.2s;
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
        }
        .logo-sub {
            font-size: 0.75rem;
            color: #64748b;
            display: block;
            font-weight: 400;
            -webkit-text-fill-color: #64748b;
            letter-spacing: 0.2px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid #1e293b;
            border-radius: 8px;
            font-size: 1.5rem;
            padding: 0.3rem 0.6rem;
            cursor: pointer;
            color: #1e293b;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: #e2e8f0;
        }
        .nav-menu {
            display: flex;
            flex-wrap: wrap;
            gap: 0.25rem 1.25rem;
            align-items: center;
            list-style: none;
            margin: 0;
        }
        .nav-menu li {
            margin: 0;
        }
        .nav-menu a {
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.3rem 0;
            color: #1e293b;
            border-bottom: 2px solid transparent;
            transition: border-color 0.2s, color 0.2s;
        }
        .nav-menu a:hover {
            border-bottom-color: #2563eb;
            color: #2563eb;
            text-decoration: none;
        }
        @media (max-width: 767px) {
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                padding: 1rem 0 0.5rem;
                gap: 0.5rem;
                border-top: 1px solid #e2e8f0;
                margin-top: 0.75rem;
            }
            .nav-menu.active {
                display: flex;
            }
            .nav-menu a {
                padding: 0.5rem 0;
                display: block;
                border-bottom: 1px solid #f1f5f9;
            }
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0.75rem 0 0.25rem;
            margin: 0 0 0.5rem;
            font-size: 0.875rem;
            color: #64748b;
        }
        .breadcrumb li+li::before {
            content: "›";
            padding: 0 0.5rem;
            color: #94a3b8;
        }
        .breadcrumb a {
            color: #475569;
        }
        .breadcrumb a:hover {
            color: #1d4ed8;
            text-decoration: none;
        }
        .breadcrumb .active {
            color: #0f172a;
            font-weight: 600;
        }
        .toc {
            background: #f1f5f9;
            border-radius: 1rem;
            padding: 1.25rem 1.75rem;
            margin: 1.5rem 0 2rem;
            border-left: 4px solid #2563eb;
        }
        .toc h3 {
            margin: 0 0 0.75rem;
            font-size: 1.2rem;
            border: none;
            padding: 0;
            color: #0f172a;
        }
        .toc ul {
            margin: 0;
            columns: 1;
            list-style: none;
        }
        .toc li {
            padding: 0.2rem 0;
        }
        .toc a {
            font-weight: 500;
        }
        @media (min-width: 600px) {
            .toc ul {
                columns: 2;
                column-gap: 2rem;
            }
        }
        .search-form {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            margin: 1.5rem 0 2rem;
            padding: 1.25rem;
            background: #f8fafc;
            border-radius: 1rem;
            border: 1px solid #e2e8f0;
        }
        .search-form label {
            font-weight: 600;
            font-size: 1rem;
            width: 100%;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-form input[type="text"] {
            flex: 1;
            min-width: 180px;
            padding: 0.7rem 1rem;
            border: 1px solid #cbd5e1;
            border-radius: 0.75rem;
            font-size: 1rem;
            outline: none;
            transition: border 0.2s;
        }
        .search-form input[type="text"]:focus {
            border-color: #2563eb;
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
        }
        .search-form button {
            padding: 0.7rem 1.5rem;
            background: #2563eb;
            color: #fff;
            border: none;
            border-radius: 0.75rem;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .search-form button:hover {
            background: #1d4ed8;
            transform: translateY(-1px);
        }
        .featured-image {
            margin: 2rem 0 2.5rem;
            border-radius: 1.25rem;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        }
        .featured-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 16/9;
        }
        .featured-image figcaption {
            padding: 0.75rem 1rem;
            font-size: 0.875rem;
            color: #475569;
            background: #f1f5f9;
            text-align: center;
        }
        .comment-section {
            margin: 2.5rem 0;
            padding: 1.5rem;
            background: #f8fafc;
            border-radius: 1.25rem;
            border: 1px solid #e2e8f0;
        }
        .comment-section h3 {
            margin-top: 0;
            border: none;
            padding: 0;
        }
        .comment-form {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
            margin-top: 1rem;
        }
        .comment-form input,
        .comment-form textarea {
            padding: 0.7rem 1rem;
            border: 1px solid #cbd5e1;
            border-radius: 0.75rem;
            font-size: 1rem;
            font-family: inherit;
            outline: none;
            transition: border 0.2s;
        }
        .comment-form input:focus,
        .comment-form textarea:focus {
            border-color: #2563eb;
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
        }
        .comment-form textarea {
            min-height: 100px;
            resize: vertical;
        }
        .comment-form button {
            align-self: flex-start;
            padding: 0.7rem 2rem;
            background: #0f172a;
            color: #fff;
            border: none;
            border-radius: 0.75rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
        }
        .comment-form button:hover {
            background: #1e293b;
        }
        .rating-section {
            margin: 2rem 0;
            padding: 1.5rem;
            background: #f1f5f9;
            border-radius: 1.25rem;
            border: 1px solid #e2e8f0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1rem 2rem;
        }
        .rating-section .stars {
            display: flex;
            gap: 0.25rem;
            font-size: 1.75rem;
            color: #f59e0b;
            cursor: pointer;
            transition: transform 0.1s;
        }
        .rating-section .stars i:hover,
        .rating-section .stars i.active {
            color: #d97706;
            transform: scale(1.1);
        }
        .rating-form button {
            padding: 0.6rem 1.5rem;
            background: #2563eb;
            color: #fff;
            border: none;
            border-radius: 0.75rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
        }
        .rating-form button:hover {
            background: #1d4ed8;
        }
        .last-updated {
            font-size: 0.85rem;
            color: #64748b;
            text-align: right;
            border-top: 1px solid #e2e8f0;
            padding-top: 1rem;
            margin-top: 2rem;
            display: flex;
            align-items: center;
            justify-content: flex-end;
            gap: 0.4rem;
        }
        .site-footer {
            max-width: 1200px;
            margin: 0 auto 1.5rem;
            background: #0f172a;
            color: #cbd5e1;
            border-radius: 1.25rem 1.25rem 1.25rem 1.25rem;
            padding: 2rem 1.5rem 1.5rem;
        }
        .site-footer a {
            color: #93c5fd;
        }
        .site-footer a:hover {
            color: #ffffff;
            text-decoration: underline;
        }
        friend-link {
            display: block;
            margin-bottom: 1.25rem;
        }
        friend-link ul {
            list-style: none;
            margin: 0.5rem 0 0;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem 1.5rem;
        }
        friend-link li {
            margin: 0;
        }
        friend-link a {
            font-weight: 500;
            padding: 0.2rem 0;
            border-bottom: 1px solid transparent;
        }
        friend-link a:hover {
            border-bottom-color: #93c5fd;
        }
        .copyright {
            border-top: 1px solid #1e293b;
            padding-top: 1.25rem;
            font-size: 0.875rem;
            text-align: center;
            color: #94a3b8;
        }
        .copyright strong {
            color: #e2e8f0;
        }
        @media (max-width: 480px) {
            h1 {
                font-size: 1.75rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            .container {
                padding: 1rem 1rem 1.5rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                width: 100%;
                justify-content: center;
            }
            .rating-section {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        .emoji-lg {
            font-size: 1.3em;
        }
        .highlight-box {
            background: #eef2ff;
            border-radius: 1rem;
            padding: 1.25rem 1.5rem;
            margin: 1.5rem 0;
            border-left: 4px solid #4f46e5;
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 1rem;
            margin: 1.5rem 0;
        }
        .stat-card {
            background: #ffffff;
            border: 1px solid #e2e8f0;
            border-radius: 1rem;
            padding: 1.25rem 1rem;
            text-align: center;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
        }
        .stat-card .number {
            font-size: 2rem;
            font-weight: 800;
            color: #2563eb;
            display: block;
        }
        .stat-card .label {
            font-size: 0.9rem;
            color: #475569;
            font-weight: 500;
        }
        .btn {
            display: inline-block;
            padding: 0.5rem 1.25rem;
            background: #2563eb;
            color: #fff;
            border-radius: 0.75rem;
            font-weight: 600;
            transition: background 0.2s;
        }
        .btn:hover {
            background: #1d4ed8;
            text-decoration: none;
            color: #fff;
        }