*,
        *::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: #f5f7fa;
            color: #1a1a2e;
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: #e63946;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover,
        a:focus {
            color: #b71c1c;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
            color: #fff;
            padding: 0 0 4px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 12px 0;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #f9d423, #e63946);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: none;
            display: inline-block;
        }
        .my-logo:hover {
            opacity: 0.9;
            text-decoration: none;
        }
        .my-logo small {
            font-size: 0.7rem;
            -webkit-text-fill-color: #aaa;
            color: #aaa;
            display: block;
            font-weight: 400;
            letter-spacing: 1px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 12px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-menu {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            align-items: center;
        }
        .nav-menu a {
            color: #e0e0e0;
            padding: 6px 14px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all 0.2s;
            white-space: nowrap;
        }
        .nav-menu a:hover,
        .nav-menu a:focus {
            background: rgba(230, 57, 70, 0.2);
            color: #f9d423;
            text-decoration: none;
        }
        .nav-menu a i {
            margin-right: 6px;
        }
        .breadcrumb {
            background: #e9ecef;
            padding: 10px 0;
            font-size: 0.85rem;
            border-bottom: 1px solid #dee2e6;
        }
        .breadcrumb ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
        }
        .breadcrumb ul li+li::before {
            content: "›";
            margin-right: 12px;
            color: #888;
        }
        .breadcrumb a {
            color: #e63946;
        }
        .breadcrumb .current {
            color: #555;
            font-weight: 600;
        }
        .hero {
            background: linear-gradient(135deg, #1a1a2e 0%, #2d2d44 100%);
            color: #fff;
            padding: 50px 0 40px;
            text-align: center;
            border-bottom: 4px solid #f9d423;
        }
        .hero h1 {
            font-size: clamp(2rem, 6vw, 3.6rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
        }
        .hero h1 span {
            background: linear-gradient(135deg, #f9d423, #e63946);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: 1.15rem;
            max-width: 750px;
            margin: 0 auto 20px;
            color: #ccc;
        }
        .hero-meta {
            display: flex;
            justify-content: center;
            gap: 24px;
            flex-wrap: wrap;
            font-size: 0.9rem;
            color: #aaa;
        }
        .hero-meta i {
            margin-right: 6px;
            color: #f9d423;
        }
        .last-updated {
            background: rgba(249, 212, 35, 0.15);
            padding: 4px 16px;
            border-radius: 30px;
            font-weight: 600;
            color: #f9d423;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 40px 0;
        }
        .main-content {
            min-width: 0;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
            max-height: calc(100vh - 120px);
            overflow-y: auto;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 24px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            margin-bottom: 24px;
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            margin-bottom: 12px;
            border-left: 4px solid #e63946;
            padding-left: 12px;
        }
        .sidebar-card ul {
            list-style: none;
        }
        .sidebar-card ul li {
            padding: 6px 0;
            border-bottom: 1px solid #f0f0f0;
        }
        .sidebar-card ul li a {
            font-size: 0.9rem;
        }
        .article-section {
            background: #fff;
            border-radius: 20px;
            padding: 32px 36px;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
            margin-bottom: 32px;
        }
        .article-section h2 {
            font-size: 1.9rem;
            font-weight: 700;
            margin: 28px 0 16px 0;
            color: #1a1a2e;
            border-bottom: 3px solid #f9d423;
            padding-bottom: 8px;
            display: inline-block;
        }
        .article-section h3 {
            font-size: 1.4rem;
            font-weight: 600;
            margin: 24px 0 12px 0;
            color: #2d2d44;
        }
        .article-section h4 {
            font-size: 1.15rem;
            font-weight: 600;
            margin: 18px 0 8px 0;
            color: #444;
        }
        .article-section p {
            margin-bottom: 16px;
            color: #2c2c3a;
        }
        .article-section ul,
        .article-section ol {
            margin: 12px 0 20px 30px;
        }
        .article-section li {
            margin-bottom: 6px;
        }
        .highlight-box {
            background: #fef9e7;
            border-left: 6px solid #f9d423;
            padding: 16px 20px;
            border-radius: 0 12px 12px 0;
            margin: 20px 0;
        }
        .highlight-box strong {
            color: #b71c1c;
        }
        .insight-box {
            background: #e8f0fe;
            border-left: 6px solid #1a73e8;
            padding: 16px 20px;
            border-radius: 0 12px 12px 0;
            margin: 20px 0;
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 16px;
            margin: 20px 0;
        }
        .stat-card {
            background: #f8f9fa;
            border-radius: 12px;
            padding: 18px;
            text-align: center;
            border: 1px solid #eee;
        }
        .stat-card .num {
            font-size: 2rem;
            font-weight: 800;
            color: #e63946;
        }
        .stat-card .label {
            font-size: 0.85rem;
            color: #666;
        }
        .feature-icon {
            font-size: 2rem;
            margin-bottom: 8px;
        }
        .image-caption {
            font-size: 0.85rem;
            color: #777;
            text-align: center;
            margin-top: 6px;
        }
        .search-form {
            display: flex;
            gap: 8px;
            margin: 16px 0 24px;
            max-width: 500px;
        }
        .search-form input {
            flex: 1;
            padding: 12px 18px;
            border: 2px solid #ddd;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: border 0.2s;
        }
        .search-form input:focus {
            border-color: #e63946;
        }
        .search-form button {
            background: #e63946;
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 0 28px;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            background: #b71c1c;
        }
        .comment-section {
            background: #fff;
            border-radius: 20px;
            padding: 32px 36px;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
            margin-bottom: 32px;
        }
        .comment-section h2 {
            font-size: 1.6rem;
            margin-bottom: 20px;
        }
        .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: 12px 16px;
            border: 2px solid #ddd;
            border-radius: 12px;
            font-size: 1rem;
            font-family: inherit;
            transition: border 0.2s;
            background: #fafafa;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #e63946;
            outline: none;
            background: #fff;
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            background: #e63946;
            color: #fff;
            border: none;
            padding: 12px 32px;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn:hover {
            background: #b71c1c;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(230, 57, 70, 0.3);
        }
        .rating-stars {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            cursor: pointer;
            direction: rtl;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            color: #ddd;
            transition: color 0.2s;
            cursor: pointer;
        }
        .rating-stars label:hover,
        .rating-stars label:hover~label,
        .rating-stars input:checked~label {
            color: #f9d423;
        }
        .link-list a {
            display: block;
            padding: 8px 0;
            border-bottom: 1px solid #f0f0f0;
            font-size: 0.9rem;
        }
        .link-list a i {
            margin-right: 8px;
            color: #e63946;
            width: 18px;
        }
        .site-footer {
            background: #1a1a2e;
            color: #ccc;
            padding: 40px 0 20px;
            margin-top: auto;
            border-top: 4px solid #f9d423;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-grid h4 {
            color: #f9d423;
            margin-bottom: 12px;
            font-size: 1.1rem;
        }
        .footer-grid a {
            color: #bbb;
            display: block;
            padding: 3px 0;
            font-size: 0.9rem;
        }
        .footer-grid a:hover {
            color: #f9d423;
        }
        friend-link {
            display: block;
            padding: 12px 0;
        }
        friend-link a {
            color: #f9d423;
            margin: 0 8px;
        }
        .copyright {
            border-top: 1px solid #333;
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: #888;
        }
        @media (max-width: 992px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                max-height: none;
                overflow: visible;
            }
            .article-section {
                padding: 24px 18px;
            }
            .comment-section {
                padding: 24px 18px;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding: 12px 0 4px;
                gap: 4px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 10px 16px;
                border-radius: 8px;
            }
            .header-inner {
                padding: 8px 0;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .stat-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .article-section {
                padding: 18px 12px;
            }
            .hero {
                padding: 30px 0;
            }
            .stat-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                justify-content: center;
                padding: 12px;
            }
        }
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: #f1f1f1;
        }
        ::-webkit-scrollbar-thumb {
            background: #e63946;
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #b71c1c;
        }
        .text-center {
            text-align: center;
        }
        .mt-20 {
            margin-top: 20px;
        }
        .mb-20 {
            margin-bottom: 20px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .gap-8 {
            gap: 8px;
        }
        .fw-700 {
            font-weight: 700;
        }
        .color-accent {
            color: #e63946;
        }