*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background: #f8fafc;
            color: #1e293b;
            line-height: 1.7;
            padding: 0;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: #1a73e8;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #0d47a1;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        :root {
            --primary: #1a73e8;
            --primary-dark: #0d47a1;
            --secondary: #7c3aed;
            --accent: #f59e0b;
            --bg-light: #f8fafc;
            --bg-card: #ffffff;
            --text-dark: #1e293b;
            --text-muted: #475569;
            --border-light: #e2e8f0;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.10);
            --radius: 16px;
            --radius-sm: 8px;
            --transition: 0.25s ease;
        }
        .site-header {
            background: var(--bg-card);
            border-bottom: 2px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 20px;
            max-width: 1200px;
            margin: 0 auto;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            color: var(--accent);
            background: none;
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.9;
        }
        .nav-bar {
            display: flex;
            align-items: center;
            gap: 24px;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 20px;
            align-items: center;
        }
        .nav-links li a {
            font-weight: 600;
            color: var(--text-dark);
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: border-color 0.2s, color 0.2s;
            font-size: 0.95rem;
        }
        .nav-links li a:hover {
            color: var(--primary);
            border-bottom-color: var(--primary);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--text-dark);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: #f1f5f9;
        }
        .nav-toggle {
            display: none;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--bg-card);
                padding: 16px 0 20px;
                border-top: 1px solid var(--border-light);
                gap: 12px;
            }
            .nav-links li a {
                font-size: 1.05rem;
                padding: 8px 20px;
                display: block;
            }
            .nav-toggle:checked~.nav-links {
                display: flex;
            }
            .header-inner {
                padding: 10px 16px;
            }
            .my-logo {
                font-size: 1.5rem;
            }
        }
        .breadcrumb-wrap {
            background: var(--bg-card);
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 6px 12px;
            font-size: 0.85rem;
            color: var(--text-muted);
            padding: 0 20px;
            max-width: 1200px;
            margin: 0 auto;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 10px;
            color: #94a3b8;
            font-weight: 700;
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb .current {
            color: var(--text-muted);
            font-weight: 500;
        }
        .hero {
            background: linear-gradient(145deg, #eef2ff 0%, #ede9fe 100%);
            padding: 40px 20px 50px;
            border-radius: 0 0 40px 40px;
            margin-bottom: 32px;
        }
        .hero-content {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
            align-items: center;
        }
        .hero-text {
            flex: 1 1 55%;
        }
        .hero-text h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            color: var(--text-dark);
        }
        .hero-text h1 span {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .hero-text p {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 640px;
            margin-bottom: 20px;
        }
        .hero-img {
            flex: 1 1 38%;
            border-radius: var(--radius);
            box-shadow: var(--shadow-md);
            background: #fff;
            padding: 8px;
        }
        .hero-img img {
            border-radius: 12px;
            width: 100%;
        }
        .hero-badge {
            display: inline-block;
            background: var(--accent);
            color: #1e293b;
            padding: 4px 16px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 0.8rem;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }
        @media (max-width: 768px) {
            .hero-text h1 {
                font-size: 1.8rem;
            }
            .hero-content {
                flex-direction: column;
            }
            .hero {
                padding: 24px 16px 32px;
            }
        }
        main {
            padding: 0 20px 60px;
        }
        .content-grid {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 36px;
            box-shadow: var(--shadow-sm);
        }
        @media (max-width: 600px) {
            .article-body {
                padding: 20px 16px;
            }
        }
        .article-body h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-top: 40px;
            margin-bottom: 16px;
            color: var(--text-dark);
            border-left: 6px solid var(--secondary);
            padding-left: 18px;
        }
        .article-body h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin-top: 32px;
            margin-bottom: 12px;
            color: #1e293b;
        }
        .article-body h4 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-top: 24px;
            margin-bottom: 8px;
            color: #334155;
        }
        .article-body p {
            margin-bottom: 18px;
            color: var(--text-muted);
            font-size: 1.02rem;
        }
        .article-body strong {
            color: var(--text-dark);
            font-weight: 700;
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 20px;
            padding-left: 28px;
            color: var(--text-muted);
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body .highlight-box {
            background: #f1f5ff;
            border-left: 5px solid var(--primary);
            padding: 18px 24px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
            font-style: normal;
        }
        .article-body .highlight-box strong {
            color: var(--primary-dark);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 24px 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--text-dark);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card ul li {
            padding: 6px 0;
            border-bottom: 1px solid #f1f5f9;
        }
        .sidebar-card ul li a {
            font-weight: 500;
            font-size: 0.95rem;
        }
        .search-form {
            display: flex;
            gap: 8px;
            margin-top: 6px;
        }
        .search-form input {
            flex: 1;
            padding: 10px 14px;
            border: 2px solid var(--border-light);
            border-radius: 40px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.2s;
        }
        .search-form input:focus {
            border-color: var(--primary);
        }
        .search-form button {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 10px 18px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .search-form button:hover {
            background: var(--primary-dark);
        }
        .comment-area {
            margin-top: 40px;
            padding-top: 28px;
            border-top: 2px solid var(--border-light);
        }
        .comment-area h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .comment-form textarea,
        .comment-form input {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid var(--border-light);
            border-radius: var(--radius-sm);
            font-size: 1rem;
            margin-bottom: 12px;
            font-family: inherit;
            transition: border 0.2s;
            resize: vertical;
        }
        .comment-form textarea:focus,
        .comment-form input:focus {
            border-color: var(--primary);
            outline: none;
        }
        .comment-form .form-row {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .comment-form .form-row input {
            flex: 1;
            min-width: 140px;
        }
        .comment-form button {
            background: var(--secondary);
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .comment-form button:hover {
            background: #6d28d9;
            transform: translateY(-1px);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 4px;
            margin-bottom: 16px;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #d1d5db;
            cursor: pointer;
            transition: color 0.15s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: var(--accent);
        }
        .rating-text {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-left: 8px;
        }
        .site-footer {
            background: #1e293b;
            color: #cbd5e1;
            padding: 40px 20px 24px;
            margin-top: 40px;
        }
        .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 36px;
        }
        @media (max-width: 768px) {
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        .footer-inner h4 {
            color: #fff;
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .footer-inner p,
        .footer-inner a {
            color: #94a3b8;
            font-size: 0.9rem;
            line-height: 1.8;
        }
        .footer-inner a:hover {
            color: #fff;
        }
        .footer-links {
            list-style: none;
            padding: 0;
        }
        .footer-links li {
            padding: 4px 0;
        }
        friend-link {
            display: block;
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid #334155;
            font-size: 0.9rem;
        }
        friend-link a {
            color: #93c5fd;
            margin: 0 6px;
        }
        .copyright {
            text-align: center;
            padding-top: 28px;
            margin-top: 28px;
            border-top: 1px solid #334155;
            color: #64748b;
            font-size: 0.85rem;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
        }
        .copyright strong {
            color: #94a3b8;
        }
        @media (max-width: 480px) {
            .article-body h2 {
                font-size: 1.5rem;
                padding-left: 12px;
            }
            .article-body h3 {
                font-size: 1.2rem;
            }
            .hero-text h1 {
                font-size: 1.5rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                justify-content: center;
            }
        }
        .last-updated {
            display: inline-block;
            background: #eef2ff;
            padding: 4px 14px;
            border-radius: 40px;
            font-size: 0.8rem;
            color: var(--primary-dark);
            font-weight: 600;
            margin-bottom: 20px;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 20px 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        table th {
            background: #f1f5f9;
            text-align: left;
            padding: 10px 14px;
            font-weight: 600;
        }
        table td {
            padding: 10px 14px;
            border-bottom: 1px solid var(--border-light);
        }
        .author-bio {
            display: flex;
            gap: 16px;
            align-items: center;
            background: #f8fafc;
            padding: 16px 20px;
            border-radius: 12px;
            margin: 24px 0;
        }
        .author-bio img {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            object-fit: cover;
        }
        .author-bio strong {
            font-size: 1rem;
        }
        .eeat-badge {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin: 16px 0;
        }
        .eeat-badge span {
            background: #eef2ff;
            padding: 4px 14px;
            border-radius: 40px;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary-dark);
            border: 1px solid #dbeafe;
        }