* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background: #f8fafc;
            color: #1e293b;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: #2563eb;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #1d4ed8;
            text-decoration: underline;
        }
        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(145deg, #0f172a, #1e293b);
            padding: 18px 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #facc15;
            letter-spacing: 1px;
            text-shadow: 0 2px 8px rgba(250, 204, 21, 0.25);
        }
        .my-logo i {
            color: #f97316;
            margin-right: 8px;
        }
        .my-logo:hover {
            color: #fde047;
            text-decoration: none;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid #facc15;
            color: #facc15;
            font-size: 1.6rem;
            padding: 4px 14px;
            border-radius: 8px;
            cursor: pointer;
            transition: 0.2s;
        }
        .nav-toggle:hover {
            background: #facc15;
            color: #0f172a;
        }
        nav {
            display: flex;
            gap: 8px 20px;
            flex-wrap: wrap;
            align-items: center;
        }
        nav a {
            color: #e2e8f0;
            font-weight: 500;
            padding: 6px 6px;
            border-bottom: 2px solid transparent;
            transition: 0.2s;
            font-size: 0.95rem;
        }
        nav a:hover {
            color: #facc15;
            border-bottom-color: #facc15;
            text-decoration: none;
        }
        .breadcrumb {
            background: #e2e8f0;
            padding: 10px 0;
            font-size: 0.88rem;
            color: #475569;
        }
        .breadcrumb a {
            color: #2563eb;
        }
        .breadcrumb a:hover {
            color: #1e40af;
        }
        .breadcrumb span {
            margin: 0 6px;
            color: #94a3b8;
        }
        main {
            padding: 40px 0 60px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        .article-body h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #0f172a;
            line-height: 1.2;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .article-body h1 i {
            color: #f97316;
        }
        .article-body .meta {
            color: #64748b;
            font-size: 0.95rem;
            margin-bottom: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            border-bottom: 1px solid #e2e8f0;
            padding-bottom: 16px;
        }
        .article-body .meta i {
            margin-right: 6px;
            color: #f97316;
        }
        .article-body h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: #0f172a;
            margin-top: 48px;
            margin-bottom: 16px;
            padding-bottom: 8px;
            border-bottom: 3px solid #facc15;
            display: inline-block;
        }
        .article-body h3 {
            font-size: 1.45rem;
            font-weight: 600;
            color: #1e293b;
            margin-top: 32px;
            margin-bottom: 12px;
        }
        .article-body h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: #334155;
            margin-top: 24px;
            margin-bottom: 8px;
        }
        .article-body p {
            margin-bottom: 18px;
            font-size: 1.05rem;
            color: #1e293b;
        }
        .article-body p b,
        .article-body p strong {
            color: #0f172a;
            font-weight: 700;
        }
        .article-body ul,
        .article-body ol {
            margin: 12px 0 20px 28px;
        }
        .article-body li {
            margin-bottom: 8px;
            font-size: 1.02rem;
        }
        .article-body img {
            max-width: 100%;
            border-radius: 16px;
            margin: 28px 0;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
            border: 1px solid #e2e8f0;
        }
        .article-body .feature-box {
            background: #f1f5f9;
            border-left: 5px solid #f97316;
            padding: 20px 24px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
        }
        .article-body .feature-box i {
            color: #f97316;
            margin-right: 10px;
        }
        .highlight-card {
            background: linear-gradient(135deg, #fef9c3, #fde68a);
            padding: 24px 28px;
            border-radius: 16px;
            margin: 24px 0;
            box-shadow: 0 4px 16px rgba(250, 204, 21, 0.2);
        }
        .highlight-card i {
            color: #d97706;
        }
        .sidebar {
            position: sticky;
            top: 120px;
            align-self: start;
        }
        .sidebar-card {
            background: #ffffff;
            border-radius: 16px;
            padding: 24px 20px;
            margin-bottom: 24px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            border: 1px solid #e2e8f0;
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #0f172a;
            margin-bottom: 12px;
            border-bottom: 2px solid #facc15;
            padding-bottom: 8px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card ul li {
            margin-bottom: 10px;
        }
        .sidebar-card ul li a {
            font-weight: 500;
            font-size: 0.95rem;
        }
        .sidebar-card ul li a i {
            color: #f97316;
            margin-right: 8px;
            font-size: 0.8rem;
        }
        .search-form {
            display: flex;
            gap: 8px;
            margin-top: 8px;
        }
        .search-form input {
            flex: 1;
            padding: 10px 16px;
            border: 2px solid #e2e8f0;
            border-radius: 40px;
            font-size: 0.95rem;
            outline: none;
            transition: 0.2s;
        }
        .search-form input:focus {
            border-color: #f97316;
        }
        .search-form button {
            background: #f97316;
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 10px 20px;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
        }
        .search-form button:hover {
            background: #ea580c;
        }
        .comment-section,
        .rating-section {
            background: #ffffff;
            border-radius: 16px;
            padding: 28px 24px;
            margin-top: 40px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            border: 1px solid #e2e8f0;
        }
        .comment-section h2,
        .rating-section h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: #0f172a;
            margin-bottom: 16px;
            border-bottom: 2px solid #facc15;
            padding-bottom: 8px;
            display: inline-block;
        }
        .comment-form textarea,
        .comment-form input,
        .rating-form select,
        .rating-form input {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #e2e8f0;
            border-radius: 12px;
            font-size: 1rem;
            margin-bottom: 12px;
            outline: none;
            transition: 0.2s;
            font-family: inherit;
        }
        .comment-form textarea:focus,
        .comment-form input:focus,
        .rating-form select:focus,
        .rating-form input:focus {
            border-color: #f97316;
        }
        .comment-form textarea {
            min-height: 100px;
            resize: vertical;
        }
        .comment-form button,
        .rating-form button {
            background: #2563eb;
            color: #fff;
            border: none;
            padding: 12px 32px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.2s;
        }
        .comment-form button:hover,
        .rating-form button:hover {
            background: #1d4ed8;
            transform: translateY(-2px);
        }
        .rating-form select {
            max-width: 200px;
        }
        .star-display {
            color: #facc15;
            font-size: 1.2rem;
            letter-spacing: 2px;
        }
        friend-link {
            display: block;
            background: #1e293b;
            color: #e2e8f0;
            padding: 28px 24px;
            border-radius: 16px;
            margin-top: 40px;
        }
        friend-link h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: #facc15;
            margin-bottom: 16px;
        }
        friend-link ul {
            list-style: none;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
        }
        friend-link ul li a {
            color: #94a3b8;
            font-weight: 500;
            transition: 0.2s;
        }
        friend-link ul li a:hover {
            color: #facc15;
            text-decoration: none;
        }
        footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 24px 0;
            text-align: center;
            font-size: 0.9rem;
            border-top: 1px solid #1e293b;
        }
        footer p {
            margin: 4px 0;
        }
        footer a {
            color: #facc15;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                order: 2;
            }
            .article-body h1 {
                font-size: 2rem;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                padding-top: 16px;
                gap: 6px;
            }
            nav.show {
                display: flex;
            }
            nav a {
                padding: 10px 0;
                border-bottom: 1px solid #334155;
                width: 100%;
            }
            .header-inner {
                align-items: center;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .article-body h1 {
                font-size: 1.7rem;
            }
            .article-body h2 {
                font-size: 1.5rem;
            }
            .article-body h3 {
                font-size: 1.2rem;
            }
            .container {
                padding: 0 14px;
            }
            .breadcrumb {
                font-size: 0.78rem;
            }
            .sidebar-card ul li a {
                font-size: 0.9rem;
            }
        }
        @media (max-width: 480px) {
            .article-body h1 {
                font-size: 1.4rem;
            }
            .article-body p {
                font-size: 0.98rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                width: 100%;
            }
            .comment-form button,
            .rating-form button {
                width: 100%;
            }
        }
        html {
            scroll-behavior: smooth;
        }
        .schema-hidden {
            display: none;
        }
        .emoji-lg {
            font-size: 1.6rem;
            margin-right: 6px;
        }
        .badge {
            background: #facc15;
            color: #0f172a;
            padding: 2px 14px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.8rem;
            display: inline-block;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 24px 0;
        }
        .table-wrap table {
            width: 100%;
            border-collapse: collapse;
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
        }
        .table-wrap th {
            background: #0f172a;
            color: #facc15;
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
        }
        .table-wrap td {
            padding: 10px 16px;
            border-bottom: 1px solid #e2e8f0;
        }
        .table-wrap tr:last-child td {
            border-bottom: none;
        }
        .table-wrap tr:hover td {
            background: #f8fafc;
        }
        .btn-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: #f97316;
            color: #fff;
            border: none;
            border-radius: 50%;
            width: 48px;
            height: 48px;
            font-size: 1.3rem;
            cursor: pointer;
            box-shadow: 0 4px 16px rgba(249, 115, 22, 0.4);
            transition: 0.2s;
            z-index: 99;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .btn-top:hover {
            background: #ea580c;
            transform: translateY(-4px);
        }
        @media (max-width: 480px) {
            .btn-top {
                bottom: 16px;
                right: 16px;
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
        }