* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #1a2a3a;
            --primary-light: #2c3e50;
            --accent: #e67e22;
            --accent-hover: #d35400;
            --bg: #f4f6f9;
            --card-bg: #ffffff;
            --text: #2c3e50;
            --text-light: #5a6c7d;
            --border: #dce1e8;
            --success: #27ae60;
            --radius: 12px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --transition: all 0.25s ease;
            --max-width: 1200px;
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-hover);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: var(--primary);
            color: #fff;
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .my-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.5px;
        }
        .my-logo i {
            color: var(--accent);
            font-size: 1.8rem;
        }
        .my-logo:hover {
            color: var(--accent);
            text-decoration: none;
        }
        .my-logo span {
            font-weight: 300;
            color: #b0c4d8;
            font-size: 0.75rem;
            display: block;
            margin-top: -2px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            font-size: 1.4rem;
            padding: 6px 14px;
            border-radius: 8px;
            cursor: pointer;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            border-color: var(--accent);
            color: var(--accent);
        }
        nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        nav a {
            color: #e0e8f0;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition);
            white-space: nowrap;
        }
        nav a:hover {
            background: rgba(255, 255, 255, 0.1);
            color: var(--accent);
            text-decoration: none;
        }
        nav a i {
            margin-right: 6px;
            font-size: 0.85rem;
        }
        .breadcrumb {
            background: #fff;
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
            font-size: 0.85rem;
            color: var(--text-light);
        }
        .breadcrumb .container {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb i {
            font-size: 0.7rem;
            color: #b0b8c4;
        }
        main {
            padding: 40px 0;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        .article-body h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 12px;
            color: var(--primary);
        }
        .article-body h1 i {
            color: var(--accent);
            margin-right: 10px;
        }
        .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            color: var(--text-light);
            font-size: 0.9rem;
            margin-bottom: 24px;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--border);
        }
        .meta i {
            margin-right: 6px;
        }
        .article-body h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-top: 48px;
            margin-bottom: 16px;
            color: var(--primary);
            border-left: 5px solid var(--accent);
            padding-left: 16px;
        }
        .article-body h3 {
            font-size: 1.35rem;
            font-weight: 600;
            margin-top: 32px;
            margin-bottom: 12px;
            color: var(--primary-light);
        }
        .article-body h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-top: 24px;
            margin-bottom: 8px;
            color: var(--text);
        }
        .article-body p {
            margin-bottom: 18px;
            color: var(--text);
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 18px;
            padding-left: 24px;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body blockquote {
            background: #f0f4fa;
            border-left: 5px solid var(--accent);
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius) var(--radius) 0;
            font-style: italic;
            color: var(--text-light);
        }
        .article-body blockquote strong {
            color: var(--text);
        }
        .highlight-box {
            background: linear-gradient(135deg, #fef9f0, #fff6e5);
            border: 1px solid #f0dcc0;
            border-radius: var(--radius);
            padding: 20px 24px;
            margin: 24px 0;
        }
        .highlight-box i {
            color: var(--accent);
            margin-right: 10px;
        }
        .featured-image {
            margin: 32px 0;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .featured-image figcaption {
            padding: 12px 16px;
            background: #fff;
            font-size: 0.85rem;
            color: var(--text-light);
            border-top: 1px solid var(--border);
        }
        .featured-image figcaption i {
            margin-right: 6px;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 20px;
            margin-bottom: 24px;
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--primary);
            border-bottom: 2px solid var(--accent);
            padding-bottom: 8px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card ul li {
            padding: 8px 0;
            border-bottom: 1px solid var(--border);
            font-size: 0.9rem;
        }
        .sidebar-card ul li:last-child {
            border-bottom: none;
        }
        .sidebar-card ul li a {
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card ul li a:hover {
            color: var(--accent);
            text-decoration: none;
        }
        .sidebar-card ul li a i {
            color: var(--accent);
            font-size: 0.8rem;
        }
        .search-box {
            display: flex;
            gap: 8px;
        }
        .search-box input {
            flex: 1;
            padding: 10px 16px;
            border: 2px solid var(--border);
            border-radius: 8px;
            font-size: 0.95rem;
            outline: none;
            transition: var(--transition);
        }
        .search-box input:focus {
            border-color: var(--accent);
        }
        .search-box button {
            background: var(--accent);
            color: #fff;
            border: none;
            padding: 10px 18px;
            border-radius: 8px;
            cursor: pointer;
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-box button:hover {
            background: var(--accent-hover);
        }
        .comment-section,
        .rating-section {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 28px 32px;
            margin-top: 48px;
        }
        .comment-section h2,
        .rating-section h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 20px;
            border-left: 5px solid var(--accent);
            padding-left: 16px;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 4px;
            font-size: 0.95rem;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 10px 16px;
            border: 2px solid var(--border);
            border-radius: 8px;
            font-size: 0.95rem;
            font-family: var(--font-sans);
            outline: none;
            transition: var(--transition);
            background: #fafbfc;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--accent);
            background: #fff;
        }
        .form-group textarea {
            min-height: 120px;
            resize: vertical;
        }
        .btn-submit {
            background: var(--accent);
            color: #fff;
            border: none;
            padding: 12px 32px;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-submit:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
        }
        .rating-stars {
            display: flex;
            gap: 8px;
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
        }
        .rating-stars i {
            transition: var(--transition);
        }
        .rating-stars i:hover,
        .rating-stars i.active {
            color: #f1c40f;
        }
        footer {
            background: var(--primary);
            color: #c8d4e0;
            padding: 40px 0 24px;
            margin-top: 60px;
        }
        footer .container {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        footer h4 {
            color: #fff;
            font-size: 1.1rem;
            margin-bottom: 14px;
            font-weight: 600;
        }
        footer a {
            color: #b0c4d8;
        }
        footer a:hover {
            color: var(--accent);
        }
        footer ul {
            list-style: none;
            padding: 0;
        }
        footer ul li {
            padding: 4px 0;
            font-size: 0.9rem;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 32px;
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: #8a9aa8;
        }
        friend-link {
            display: block;
            margin-top: 12px;
            font-size: 0.9rem;
        }
        friend-link a {
            color: var(--accent);
            margin: 0 6px;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            footer .container {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                background: var(--primary-light);
                padding: 12px;
                border-radius: var(--radius);
                margin-top: 8px;
            }
            nav.open {
                display: flex;
            }
            nav a {
                padding: 10px 12px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }
            nav a:last-child {
                border-bottom: none;
            }
            .article-body h1 {
                font-size: 1.7rem;
            }
            .article-body h2 {
                font-size: 1.4rem;
            }
            .article-body h3 {
                font-size: 1.15rem;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            footer .container {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .comment-section,
            .rating-section {
                padding: 20px;
            }
            .meta {
                font-size: 0.8rem;
                gap: 10px;
            }
        }
        @media (max-width: 480px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .article-body h1 {
                font-size: 1.4rem;
            }
            .container {
                padding: 0 12px;
            }
            .rating-stars {
                font-size: 1.6rem;
            }
        }
        .text-accent {
            color: var(--accent);
        }
        .fw-bold {
            font-weight: 700;
        }
        .mt-2 {
            margin-top: 16px;
        }
        .mb-2 {
            margin-bottom: 16px;
        }
        .gap-1 {
            gap: 8px;
        }
        .flex {
            display: flex;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }
        .align-center {
            align-items: center;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 24px 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        table th {
            background: var(--primary);
            color: #fff;
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
        }
        table td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--border);
        }
        table tr:last-child td {
            border-bottom: none;
        }
        table tr:hover td {
            background: #f8fafc;
        }
        .tag {
            display: inline-block;
            background: #eef2f7;
            color: var(--text-light);
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
        }