* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: #f5f7fa;
            color: #1e293b;
            line-height: 1.75;
            font-size: 16px;
        }
        a {
            color: #2563eb;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #1e40af;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.75rem;
            font-weight: 800;
            color: #facc15;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            color: #f97316;
            font-size: 1.8rem;
        }
        .my-logo:hover {
            text-decoration: none;
            color: #fbbf24;
        }
        .my-logo small {
            font-size: 0.7rem;
            color: #94a3b8;
            font-weight: 400;
            display: block;
            letter-spacing: 0.3px;
        }
        nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        nav a {
            color: #e2e8f0;
            padding: 8px 14px;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.2s, color 0.2s;
        }
        nav a:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #facc15;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #facc15;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
        }
        #nav-toggle {
            display: none;
        }
        #nav-toggle:checked~.nav-links {
            display: flex;
            flex-direction: column;
            width: 100%;
            margin-top: 12px;
            background: #1e293b;
            padding: 12px 0;
            border-radius: 12px;
        }
        #nav-toggle:checked~.nav-links a {
            padding: 10px 20px;
        }
        .breadcrumb {
            background: #e9edf2;
            padding: 10px 0;
            font-size: 0.85rem;
            color: #475569;
        }
        .breadcrumb a {
            color: #2563eb;
        }
        .breadcrumb a:hover {
            color: #1e40af;
        }
        .breadcrumb span {
            margin: 0 4px;
            color: #94a3b8;
        }
        main {
            padding: 32px 0 48px;
            background: #fff;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        .article-body h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #0f172a;
            margin-bottom: 8px;
            line-height: 1.2;
        }
        .article-body h1 i {
            color: #f97316;
        }
        .last-updated {
            display: block;
            color: #64748b;
            font-size: 0.85rem;
            margin-bottom: 20px;
            border-bottom: 1px solid #e2e8f0;
            padding-bottom: 12px;
        }
        .article-body h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #0f172a;
            margin-top: 48px;
            margin-bottom: 16px;
            border-left: 5px solid #f97316;
            padding-left: 16px;
        }
        .article-body h3 {
            font-size: 1.35rem;
            font-weight: 600;
            color: #1e293b;
            margin-top: 32px;
            margin-bottom: 12px;
        }
        .article-body h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: #334155;
            margin-top: 20px;
            margin-bottom: 8px;
        }
        .article-body p {
            margin-bottom: 18px;
            color: #334155;
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 20px;
            padding-left: 24px;
            color: #334155;
        }
        .article-body li {
            margin-bottom: 6px;
        }
        .article-body strong {
            color: #0f172a;
        }
        .feature-img {
            margin: 28px 0;
            border-radius: 14px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        }
        .highlight-box {
            background: #fef9e7;
            border-left: 5px solid #facc15;
            padding: 20px 24px;
            border-radius: 8px;
            margin: 24px 0;
        }
        .highlight-box p {
            margin-bottom: 0;
        }
        .insight-box {
            background: #eef2ff;
            border-left: 5px solid #6366f1;
            padding: 20px 24px;
            border-radius: 8px;
            margin: 24px 0;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 24px 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        table th {
            background: #1e293b;
            color: #f8fafc;
            padding: 12px 16px;
            text-align: left;
        }
        table td {
            padding: 10px 16px;
            border-bottom: 1px solid #e2e8f0;
        }
        table tr:hover td {
            background: #f8fafc;
        }
        .sidebar {
            background: #f8fafc;
            border-radius: 16px;
            padding: 24px;
            border: 1px solid #e2e8f0;
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #0f172a;
            margin-bottom: 16px;
            border-bottom: 2px solid #facc15;
            padding-bottom: 8px;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
        }
        .sidebar ul li {
            margin-bottom: 10px;
        }
        .sidebar ul li a {
            display: block;
            padding: 8px 12px;
            background: #fff;
            border-radius: 8px;
            border: 1px solid #e2e8f0;
            font-size: 0.9rem;
            transition: all 0.2s;
        }
        .sidebar ul li a:hover {
            background: #f1f5f9;
            border-color: #f97316;
            text-decoration: none;
        }
        .sidebar .rating-widget {
            margin-top: 20px;
            padding-top: 16px;
            border-top: 1px solid #e2e8f0;
        }
        .sidebar .rating-widget .stars {
            font-size: 1.5rem;
            color: #facc15;
            cursor: pointer;
            display: flex;
            gap: 4px;
        }
        .sidebar .rating-widget .stars i {
            transition: transform 0.15s;
        }
        .sidebar .rating-widget .stars i:hover {
            transform: scale(1.2);
        }
        .search-section {
            background: #f1f5f9;
            padding: 20px;
            border-radius: 12px;
            margin-bottom: 24px;
        }
        .search-section form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        .search-section input[type="text"] {
            flex: 1;
            min-width: 180px;
            padding: 12px 18px;
            border: 2px solid #e2e8f0;
            border-radius: 10px;
            font-size: 1rem;
            outline: none;
            transition: border 0.2s;
        }
        .search-section input[type="text"]:focus {
            border-color: #f97316;
        }
        .search-section button {
            padding: 12px 28px;
            background: #f97316;
            color: #fff;
            border: none;
            border-radius: 10px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
        }
        .search-section button:hover {
            background: #ea580c;
        }
        .search-section button:active {
            transform: scale(0.97);
        }
        .comment-section {
            margin-top: 48px;
            padding-top: 32px;
            border-top: 2px solid #e2e8f0;
        }
        .comment-section h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 20px;
        }
        .comment-section form {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 700px;
        }
        .comment-section input,
        .comment-section textarea {
            padding: 12px 16px;
            border: 2px solid #e2e8f0;
            border-radius: 10px;
            font-size: 1rem;
            font-family: inherit;
            outline: none;
            transition: border 0.2s;
        }
        .comment-section input:focus,
        .comment-section textarea:focus {
            border-color: #f97316;
        }
        .comment-section textarea {
            min-height: 120px;
            resize: vertical;
        }
        .comment-section button {
            align-self: flex-start;
            padding: 12px 32px;
            background: #2563eb;
            color: #fff;
            border: none;
            border-radius: 10px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
        }
        .comment-section button:hover {
            background: #1d4ed8;
        }
        .rating-section {
            margin-top: 32px;
            padding: 20px 24px;
            background: #fef9e7;
            border-radius: 12px;
            display: inline-block;
        }
        .rating-section .stars-input {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            color: #d1d5db;
            cursor: pointer;
            margin: 8px 0;
        }
        .rating-section .stars-input i.active {
            color: #facc15;
        }
        .rating-section .stars-input i:hover {
            color: #facc15;
        }
        footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 40px 0 20px;
        }
        footer a {
            color: #facc15;
        }
        footer a:hover {
            color: #fbbf24;
        }
        footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 32px;
            margin-bottom: 32px;
        }
        footer h4 {
            color: #f8fafc;
            font-size: 1.1rem;
            margin-bottom: 12px;
            border-bottom: 1px solid #334155;
            padding-bottom: 6px;
        }
        footer ul {
            list-style: none;
            padding: 0;
        }
        footer ul li {
            margin-bottom: 8px;
        }
        footer ul li a {
            font-size: 0.9rem;
        }
        friend-link {
            display: block;
            padding: 16px 0;
            border-top: 1px solid #334155;
            margin-top: 16px;
            font-size: 0.9rem;
            color: #94a3b8;
        }
        friend-link a {
            margin: 0 4px;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #334155;
            font-size: 0.85rem;
            color: #64748b;
        }
        @media (max-width: 900px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                margin-top: 32px;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-links {
                display: none;
                width: 100%;
            }
            .nav-links a {
                width: 100%;
                text-align: left;
                padding: 12px 16px;
            }
            .header-inner {
                align-items: center;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .article-body h1 {
                font-size: 1.6rem;
            }
            .article-body h2 {
                font-size: 1.35rem;
            }
            .article-body h3 {
                font-size: 1.15rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
            .search-section form {
                flex-direction: column;
            }
            .search-section input[type="text"] {
                min-width: auto;
            }
        }
        .hidden-schema {
            display: none;
        }