:root {
            --primary: #2c3e50;
            --secondary: #3498db;
            --accent: #e74c3c;
            --light: #ecf0f1;
            --dark: #1a252f;
            --gray: #7f8c8d;
            --shadow: 0 4px 12px rgba(0,0,0,0.08);
            --transition: all 0.3s ease;
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a { color: var(--secondary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { padding-left: 1.5rem; margin: 1rem 0; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .btn {
            display: inline-block;
            background: var(--secondary);
            color: white;
            padding: 0.75rem 1.5rem;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn:hover { background: var(--primary); color: white; transform: translateY(-2px); }
        .section-padding { padding: 3rem 0; }
        .text-center { text-align: center; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .mb-3 { margin-bottom: 3rem; }
        .mt-2 { margin-top: 2rem; }
        .mt-3 { margin-top: 3rem; }
        .bold { font-weight: 700; }
        .italic { font-style: italic; }
        .highlight { background-color: #fffacd; padding: 0.2rem 0.4rem; border-radius: 3px; }
        header {
            background-color: var(--primary);
            color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            color: white;
            text-transform: uppercase;
            letter-spacing: 2px;
            font-family: 'Arial Black', sans-serif;
            background: linear-gradient(to right, #3498db, #2ecc71);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .my-logo:hover { opacity: 0.9; }
        .search-box {
            display: flex;
            flex-grow: 1;
            max-width: 400px;
            margin: 0 2rem;
        }
        .search-box input {
            flex-grow: 1;
            padding: 0.7rem 1rem;
            border: 2px solid transparent;
            border-radius: 30px 0 0 30px;
            font-size: 1rem;
        }
        .search-box button {
            background: var(--accent);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 30px 30px 0;
            cursor: pointer;
        }
        .search-box button:hover { background: #c0392b; }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        nav {
            background-color: var(--dark);
            padding: 0.8rem 0;
        }
        .nav-menu {
            display: flex;
            justify-content: center;
            list-style: none;
            gap: 2rem;
        }
        .nav-menu a {
            color: var(--light);
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
        }
        .nav-menu a:hover { background-color: rgba(255,255,255,0.1); }
        .breadcrumb {
            background-color: #f8f9fa;
            padding: 1rem 0;
            font-size: 0.9rem;
            color: var(--gray);
        }
        .breadcrumb a { color: var(--gray); }
        .breadcrumb a:hover { color: var(--secondary); }
        main { flex: 1; }
        .article-header {
            background: linear-gradient(rgba(44, 62, 80, 0.85), rgba(44, 62, 80, 0.9)), url('https://images.unsplash.com/photo-1519681393784-d120267933ba?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80') center/cover no-repeat;
            color: white;
            padding: 4rem 0;
            margin-bottom: 3rem;
            border-radius: 0 0 15px 15px;
        }
        .article-header h1 {
            font-size: 3.2rem;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .meta-info {
            display: flex;
            gap: 2rem;
            font-size: 0.95rem;
            color: #ddd;
        }
        .meta-info i { margin-right: 0.5rem; }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        article h2 {
            font-size: 2.2rem;
            color: var(--primary);
            margin: 2.5rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid var(--secondary);
        }
        article h3 {
            font-size: 1.8rem;
            color: var(--dark);
            margin: 2rem 0 1rem;
        }
        article h4 {
            font-size: 1.4rem;
            color: var(--gray);
            margin: 1.5rem 0 0.8rem;
        }
        article p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .feature-img {
            margin: 2.5rem 0;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .feature-img figcaption {
            text-align: center;
            font-style: italic;
            padding: 0.8rem;
            background: #f8f9fa;
            color: var(--gray);
        }
        blockquote {
            border-left: 5px solid var(--secondary);
            padding-left: 2rem;
            margin: 2rem 0;
            font-style: italic;
            color: var(--primary);
            background: #f8f9fa;
            padding: 2rem;
            border-radius: 0 10px 10px 0;
        }
        .link-list {
            background: #f1f8ff;
            padding: 2rem;
            border-radius: 10px;
            margin: 2.5rem 0;
        }
        .link-list h3 { margin-top: 0; }
        .link-list ul { list-style: none; padding-left: 0; }
        .link-list li { margin-bottom: 0.8rem; padding-left: 1.5rem; position: relative; }
        .link-list li:before { content: '🔗'; position: absolute; left: 0; }
        aside {
            background: white;
            padding: 2rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 140px;
        }
        .widget { margin-bottom: 2.5rem; }
        .widget h3 {
            color: var(--primary);
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--light);
        }
        .rating-widget .stars {
            color: #f1c40f;
            font-size: 1.5rem;
            margin-bottom: 1rem;
        }
        .rating-widget select, .comment-widget textarea, .comment-widget input {
            width: 100%;
            padding: 0.8rem;
            margin-bottom: 1rem;
            border: 1px solid #ddd;
            border-radius: 5px;
        }
        .weather-card {
            background: linear-gradient(to bottom right, #3498db, #2c3e50);
            color: white;
            padding: 1.5rem;
            border-radius: 10px;
            text-align: center;
        }
        .weather-card i { font-size: 3rem; margin-bottom: 1rem; }
        .weather-card .temp { font-size: 2.5rem; font-weight: bold; }
        footer {
            background-color: var(--dark);
            color: #ccc;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 {
            color: white;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.05);
            padding: 2rem;
            border-radius: 8px;
            margin-top: 2rem;
        }
        friend-link h4 { color: #2ecc71; }
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .friend-links a {
            background: rgba(255,255,255,0.1);
            padding: 0.5rem 1rem;
            border-radius: 4px;
            color: #ddd;
        }
        .friend-links a:hover { background: var(--secondary); color: white; }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #444;
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 992px) {
            .content-grid { grid-template-columns: 1fr; }
            aside { position: static; }
            .article-header h1 { font-size: 2.6rem; }
        }
        @media (max-width: 768px) {
            .header-top { flex-wrap: wrap; }
            .search-box { order: 3; max-width: 100%; margin: 1rem 0 0; }
            .hamburger { display: block; }
            nav { display: none; }
            .nav-menu {
                flex-direction: column;
                text-align: center;
                padding: 1rem;
            }
            .nav-active { display: block; }
            .article-header h1 { font-size: 2.2rem; }
            h2 { font-size: 1.9rem; }
            h3 { font-size: 1.6rem; }
            .footer-content { grid-template-columns: 1fr; }
        }