* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #4a6fa5;
            --primary-dark: #3a5985;
            --secondary: #ff6b6b;
            --accent: #51cf66;
            --dark: #2d3436;
            --light: #f8f9fa;
            --gray: #adb5bd;
            --transition: all 0.3s ease;
            --shadow: 0 5px 15px rgba(0,0,0,0.08);
            --border-radius: 10px;
            --max-width: 1200px;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--dark);
            background-color: #fff;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .btn {
            display: inline-block;
            background: var(--primary);
            color: white;
            padding: 0.8rem 1.8rem;
            border-radius: 50px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }
        .btn:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }
        .section-padding {
            padding: 4rem 0;
        }
        .site-header {
            background: white;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .my-logo i {
            color: var(--secondary);
        }
        .my-logo span {
            color: var(--accent);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            font-weight: 600;
            font-size: 1rem;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            cursor: pointer;
            color: var(--dark);
        }
        .breadcrumb {
            background: #f1f3f5;
            padding: 1rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "›";
            margin: 0 0.7rem;
            color: var(--gray);
        }
        .hero {
            background: linear-gradient(135deg, #4a6fa5 0%, #3a5985 100%);
            color: white;
            padding: 4rem 0;
            text-align: center;
        }
        .hero h1 {
            font-size: 3rem;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 700px;
            margin: 0 auto 2rem;
            opacity: 0.9;
        }
        .search-box {
            max-width: 600px;
            margin: 2rem auto;
            background: white;
            border-radius: var(--border-radius);
            padding: 0.5rem;
            display: flex;
            box-shadow: var(--shadow);
        }
        .search-box input {
            flex: 1;
            border: none;
            padding: 1rem;
            font-size: 1rem;
            outline: none;
        }
        .search-box button {
            background: var(--secondary);
            color: white;
            border: none;
            padding: 0 2rem;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: 600;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin: 3rem auto;
        }
        article {
            font-size: 1.1rem;
        }
        article h2 {
            font-size: 2.2rem;
            margin: 2.5rem 0 1.5rem;
            color: var(--primary-dark);
            border-bottom: 3px solid var(--accent);
            padding-bottom: 0.5rem;
        }
        article h3 {
            font-size: 1.7rem;
            margin: 2rem 0 1rem;
            color: var(--dark);
        }
        article h4 {
            font-size: 1.4rem;
            margin: 1.5rem 0 0.8rem;
            color: var(--primary);
        }
        article p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        article strong {
            color: var(--primary-dark);
            font-weight: 700;
        }
        article em {
            color: var(--secondary);
            font-style: italic;
        }
        .highlight-box {
            background: #e9f7ff;
            border-left: 5px solid var(--primary);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .sidebar-widget {
            background: #f8f9fa;
            padding: 2rem;
            border-radius: var(--border-radius);
            margin-bottom: 2rem;
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            margin-bottom: 1.5rem;
            color: var(--primary-dark);
            font-size: 1.5rem;
        }
        .rating-widget .stars {
            display: flex;
            gap: 0.3rem;
            margin-bottom: 1rem;
            font-size: 1.5rem;
            color: #ffc107;
        }
        .rating-widget form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .rating-widget input, .rating-widget select {
            padding: 0.8rem;
            border: 1px solid var(--gray);
            border-radius: 5px;
        }
        .comment-list {
            list-style: none;
        }
        .comment-list li {
            padding: 1rem 0;
            border-bottom: 1px solid #eee;
        }
        .comment-author {
            font-weight: bold;
            color: var(--primary);
        }
        .comment-date {
            font-size: 0.85rem;
            color: var(--gray);
        }
        .site-footer {
            background: var(--dark);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 3rem;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 1rem;
        }
        friend-link {
            display: block;
            margin: 1rem 0;
        }
        friend-link a {
            color: var(--accent);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #444;
            font-size: 0.9rem;
            color: var(--gray);
        }
        .update-time {
            background: var(--accent);
            color: white;
            padding: 0.5rem 1rem;
            border-radius: 50px;
            font-size: 0.9rem;
            display: inline-block;
            margin: 1rem 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
            .hero h1 {
                font-size: 2.5rem;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav ul {
                position: fixed;
                top: 80px;
                left: 0;
                background: white;
                width: 100%;
                flex-direction: column;
                padding: 2rem;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
                transform: translateY(-150%);
                opacity: 0;
                transition: var(--transition);
                z-index: 999;
            }
            .main-nav.active ul {
                transform: translateY(0);
                opacity: 1;
            }
            .hero h1 {
                font-size: 2rem;
            }
            article h2 {
                font-size: 1.8rem;
            }
            article h3 {
                font-size: 1.5rem;
            }
            :root {
                font-size: 15px;
            }
        }