* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary-blue: #1a6cc9;
            --secondary-blue: #4aa3ff;
            --accent-orange: #ff9a3d;
            --light-bg: #f0f9ff;
            --dark-text: #1a365d;
            --light-text: #4a5568;
            --card-bg: #ffffff;
            --shadow: 0 4px 12px rgba(26, 54, 93, 0.08);
            --border-radius: 12px;
            --transition: all 0.3s ease;
        }
        body {
            background-color: var(--light-bg);
            color: var(--dark-text);
            line-height: 1.7;
            overflow-x: hidden;
        }
        header {
            background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
            color: white;
            padding: 1rem 2rem;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            transition: var(--transition);
        }
        .my-logo:hover {
            transform: scale(1.05);
            color: #ffeb3b;
        }
        .my-logo i {
            color: var(--accent-orange);
        }
        nav {
            display: flex;
            align-items: center;
            gap: 2rem;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .nav-links a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: 6px;
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover,
        .nav-links a.active {
            background-color: rgba(255, 255, 255, 0.2);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 10%;
            width: 0;
            height: 3px;
            background-color: var(--accent-orange);
            transition: width 0.3s ease;
        }
        .nav-links a:hover::after {
            width: 80%;
        }
        .search-box {
            display: flex;
            background: white;
            border-radius: 50px;
            overflow: hidden;
            padding: 0.3rem;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        }
        .search-box input {
            border: none;
            padding: 0.7rem 1rem;
            outline: none;
            min-width: 250px;
            color: var(--dark-text);
        }
        .search-box button {
            background: var(--accent-orange);
            border: none;
            color: white;
            padding: 0.7rem 1.5rem;
            border-radius: 50px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-box button:hover {
            background-color: #e6891e;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            background: none;
            border: none;
            color: white;
        }
        .breadcrumb {
            max-width: 1400px;
            margin: 1rem auto 0.5rem;
            padding: 0 2rem;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--primary-blue);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            color: var(--light-text);
        }
        main {
            max-width: 1400px;
            margin: 2rem auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        .article-container {
            background-color: var(--card-bg);
            border-radius: var(--border-radius);
            padding: 3rem;
            box-shadow: var(--shadow);
        }
        .article-header {
            border-bottom: 3px solid var(--secondary-blue);
            padding-bottom: 1.5rem;
            margin-bottom: 3rem;
        }
        h1 {
            font-size: 3rem;
            line-height: 1.2;
            color: var(--dark-text);
            margin-bottom: 1rem;
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            color: var(--light-text);
            font-size: 0.95rem;
        }
        .update-time {
            background-color: #e6f7ff;
            padding: 0.5rem 1rem;
            border-radius: 6px;
            color: var(--primary-blue);
            font-weight: 600;
        }
        .featured-image {
            width: 100%;
            border-radius: var(--border-radius);
            overflow: hidden;
            margin: 2.5rem 0;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
        }
        .featured-image img {
            width: 100%;
            height: auto;
            display: block;
            transition: transform 0.5s ease;
        }
        .featured-image:hover img {
            transform: scale(1.02);
        }
        h2 {
            font-size: 2.2rem;
            color: var(--primary-blue);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed #cce5ff;
        }
        h3 {
            font-size: 1.7rem;
            color: var(--secondary-blue);
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: var(--dark-text);
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            color: var(--light-text);
        }
        .highlight {
            background: linear-gradient(120deg, #ffecb3 0%, #ffecb3 100%);
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .content-block {
            margin-bottom: 3rem;
            padding: 1.5rem;
            background-color: #f8fbff;
            border-radius: var(--border-radius);
            border-left: 5px solid var(--accent-orange);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .stat-card {
            background: white;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            text-align: center;
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.12);
        }
        .stat-card i {
            font-size: 2.5rem;
            color: var(--accent-orange);
            margin-bottom: 1rem;
        }
        .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary-blue);
            display: block;
        }
        .stat-desc {
            font-size: 1rem;
            color: var(--light-text);
        }
        .quote {
            font-style: italic;
            font-size: 1.3rem;
            color: var(--primary-blue);
            padding: 2rem;
            background-color: #e6f2ff;
            border-radius: var(--border-radius);
            margin: 2.5rem 0;
            position: relative;
            border-left: 5px solid var(--accent-orange);
        }
        .quote::before {
            content: "\201C";
            font-size: 4rem;
            color: var(--secondary-blue);
            position: absolute;
            top: -10px;
            left: 15px;
            opacity: 0.5;
        }
        .internal-links {
            background-color: #f0f7ff;
            padding: 2rem;
            border-radius: var(--border-radius);
            margin: 3rem 0;
        }
        .internal-links h3 {
            margin-top: 0;
        }
        .links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1rem;
            margin-top: 1.5rem;
        }
        .link-item {
            background: white;
            padding: 1rem;
            border-radius: 8px;
            box-shadow: 0 3px 8px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
        }
        .link-item:hover {
            background-color: var(--secondary-blue);
            transform: translateX(5px);
        }
        .link-item:hover a {
            color: white;
        }
        .link-item a {
            color: var(--primary-blue);
            text-decoration: none;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 0.7rem;
        }
        .link-item i {
            font-size: 0.9rem;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background-color: var(--card-bg);
            border-radius: var(--border-radius);
            padding: 1.8rem;
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            font-size: 1.4rem;
            margin-top: 0;
            padding-bottom: 0.8rem;
            border-bottom: 2px solid #e6f2ff;
            margin-bottom: 1.5rem;
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            font-size: 2rem;
            color: #ffc107;
            margin: 1rem 0;
        }
        .stars i {
            cursor: pointer;
            transition: var(--transition);
        }
        .stars i:hover {
            transform: scale(1.2);
        }
        .rating-form button {
            background: var(--accent-orange);
            color: white;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            width: 100%;
            margin-top: 1rem;
            transition: var(--transition);
        }
        .rating-form button:hover {
            background-color: #e6891e;
        }
        .comment-form textarea {
            width: 100%;
            padding: 1rem;
            border: 1px solid #cce5ff;
            border-radius: 8px;
            resize: vertical;
            min-height: 120px;
            margin-bottom: 1rem;
            font-size: 1rem;
        }
        .comment-form input {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #cce5ff;
            border-radius: 8px;
            margin-bottom: 1rem;
        }
        .comment-form button {
            background: var(--primary-blue);
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            width: 100%;
            transition: var(--transition);
        }
        .comment-form button:hover {
            background-color: #1557a0;
        }
        footer {
            background: linear-gradient(135deg, #0d2b4e, var(--dark-text));
            color: white;
            padding: 3rem 2rem 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
        }
        .footer-logo {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 1rem;
            color: white;
        }
        .footer-links h4 {
            color: white;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #cce5ff;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent-orange);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.1);
            padding: 1rem;
            border-radius: 8px;
            margin-bottom: 1rem;
            transition: var(--transition);
        }
        friend-link:hover {
            background: rgba(255, 255, 255, 0.2);
        }
        friend-link a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            display: block;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #a0c8ff;
            font-size: 0.9rem;
            max-width: 1400px;
            margin-left: auto;
            margin-right: auto;
        }
        @media (max-width: 1024px) {
            main {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .sidebar {
                order: -1;
            }
            h1 {
                font-size: 2.5rem;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                align-items: stretch;
            }
            nav {
                flex-direction: column;
                align-items: stretch;
                gap: 1rem;
            }
            .nav-links {
                flex-direction: column;
                gap: 0.5rem;
                display: none;
            }
            .nav-links.active {
                display: flex;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 1.5rem;
                right: 2rem;
            }
            .search-box input {
                min-width: auto;
                width: 100%;
            }
            .article-container {
                padding: 1.5rem;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .breadcrumb, main {
                padding: 0 1rem;
            }
        }
        .emoji {
            font-size: 1.3em;
            margin-right: 0.3rem;
        }
        .bold {
            font-weight: 800;
            color: var(--dark-text);
        }
        .text-center {
            text-align: center;
        }
        .mb-3 {
            margin-bottom: 3rem;
        }