* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.7;
            color: #2d3748;
            background-color: #f8fafc;
            max-width: 100vw;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: #3b82f6;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #1d4ed8;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul, ol {
            padding-left: 1.5rem;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .text-center { text-align: center; }
        .bold { font-weight: 700; }
        .italic { font-style: italic; }
        .highlight {
            background: linear-gradient(120deg, #a5b4fc30 0%, #a5b4fc30 100%);
            padding: 2px 6px;
            border-radius: 4px;
        }
        .site-header {
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #60a5fa;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .my-logo span {
            color: #fbbf24;
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .nav-desktop { display: none; }
        }
        .nav-desktop a {
            color: #cbd5e1;
            font-weight: 500;
        }
        .nav-desktop a:hover {
            color: #60a5fa;
        }
        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .hamburger-btn { display: block; }
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: #1e293b;
            padding: 1rem;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            box-shadow: 0 5px 10px rgba(0,0,0,0.2);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            color: #cbd5e1;
            padding: 0.75rem 0;
            border-bottom: 1px solid #334155;
        }
        .mobile-nav a:last-child {
            border-bottom: none;
        }
        .breadcrumb {
            background-color: #e2e8f0;
            padding: 0.75rem 0;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .breadcrumb a {
            color: #4b5563;
        }
        .breadcrumb a:hover {
            color: #3b82f6;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-area {
            background: white;
            border-radius: 12px;
            padding: 2.5rem;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);
        }
        h1 {
            font-size: 2.8rem;
            color: #1e293b;
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
        }
        h2 {
            font-size: 2rem;
            color: #334155;
            margin-top: 3rem;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid #dbeafe;
        }
        h3 {
            font-size: 1.5rem;
            color: #475569;
            margin-top: 2.5rem;
            margin-bottom: 0.8rem;
        }
        h4 {
            font-size: 1.2rem;
            color: #64748b;
            margin-top: 2rem;
            margin-bottom: 0.5rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.05rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.2rem;
            color: #4b5563;
            background: #f0f9ff;
            padding: 1.5rem;
            border-left: 4px solid #3b82f6;
            border-radius: 0 8px 8px 0;
            margin-bottom: 2.5rem;
        }
        .quote {
            font-style: italic;
            color: #6b7280;
            border-left: 4px solid #cbd5e1;
            padding-left: 1.5rem;
            margin: 2rem 0;
        }
        .featured-image {
            margin: 2.5rem 0;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #6b7280;
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .widget {
            background: white;
            border-radius: 12px;
            padding: 1.5rem;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        .widget h3 {
            font-size: 1.3rem;
            margin-top: 0;
            color: #1e293b;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-form {
            display: flex;
            margin-top: 1rem;
        }
        .search-input {
            flex-grow: 1;
            padding: 0.75rem;
            border: 2px solid #d1d5db;
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
        }
        .search-btn {
            background: #3b82f6;
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-btn:hover {
            background: #2563eb;
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #d1d5db;
            cursor: pointer;
        }
        .stars .active {
            color: #fbbf24;
        }
        .form-input, .form-textarea {
            width: 100%;
            padding: 0.75rem;
            border: 2px solid #d1d5db;
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
        }
        .form-textarea {
            min-height: 120px;
            resize: vertical;
        }
        .submit-btn {
            background: #10b981;
            color: white;
            border: none;
            padding: 0.9rem;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s;
        }
        .submit-btn:hover {
            background: #059669;
        }
        .related-links ul {
            list-style: none;
            padding-left: 0;
        }
        .related-links li {
            margin-bottom: 0.8rem;
            padding-left: 0;
        }
        .related-links a {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            color: #4b5563;
        }
        .related-links a:hover {
            color: #3b82f6;
        }
        .update-time {
            font-size: 0.9rem;
            color: #6b7280;
            text-align: center;
        }
        .site-footer {
            background: #1e293b;
            color: #cbd5e1;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section {
            flex: 1;
            min-width: 250px;
        }
        .footer-section h4 {
            color: #f8fafc;
            margin-bottom: 1.2rem;
            font-size: 1.1rem;
        }
        friend-link {
            display: block;
            color: #60a5fa;
            margin-bottom: 0.5rem;
        }
        friend-link a {
            color: inherit;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #334155;
            font-size: 0.9rem;
            color: #94a3b8;
        }
        .interactive-box {
            background: linear-gradient(135deg, #e0f2fe 0%, #f0f9ff 100%);
            border: 2px dashed #38bdf8;
            border-radius: 12px;
            padding: 1.5rem;
            margin: 2rem 0;
        }
        .tip {
            background: #fef3c7;
            border-left: 4px solid #f59e0b;
            padding: 1rem;
            margin: 1.5rem 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .stat-card {
            background: white;
            border-radius: 10px;
            padding: 1.5rem;
            text-align: center;
            box-shadow: 0 4px 10px rgba(0,0,0,0.05);
            border-top: 4px solid #8b5cf6;
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: #1e293b;
            line-height: 1;
        }
        .stat-label {
            color: #64748b;
            margin-top: 0.5rem;
        }
        @media (max-width: 768px) {
            .article-area {
                padding: 1.5rem;
            }
            .widget {
                padding: 1.25rem;
            }
            .footer-content {
                flex-direction: column;
            }
        }