* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            max-width: 100vw;
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: #2c5282; transition: color 0.3s; }
        a:hover { color: #1a365d; text-decoration: underline; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: #1a202c;
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            font-family: 'Trebuchet MS', sans-serif;
            background: linear-gradient(90deg, #ffd700, #ffed4e);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: 1px;
        }
        .my-logo:hover { text-decoration: none; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #e2e8f0;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover { color: #ffd700; }
        .main-nav a::after {
            content: '';
            position: absolute;
            width: 0;
            height: 3px;
            background: #ffd700;
            bottom: 0;
            left: 0;
            transition: width 0.3s;
        }
        .main-nav a:hover::after { width: 100%; }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background: #fff;
            border-radius: 2px;
            transition: 0.3s;
        }
        .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .hamburger.active span:nth-child(2) { opacity: 0; }
        .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(7px, -6px); }
        .breadcrumb {
            background: #edf2f7;
            padding: 1rem 20px;
            font-size: 0.9rem;
            border-bottom: 1px solid #cbd5e0;
        }
        .breadcrumb a { color: #4a5568; }
        .breadcrumb a:hover { color: #2d3748; }
        .breadcrumb span { color: #718096; }
        .hero {
            background: linear-gradient(rgba(26, 32, 44, 0.85), rgba(26, 32, 44, 0.9)), url('https://images.unsplash.com/photo-1591799264318-7e6ef8ddb7ea?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80') center/cover no-repeat;
            color: white;
            text-align: center;
            padding: 4rem 2rem;
            margin-bottom: 3rem;
            border-radius: 0 0 20px 20px;
        }
        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }
        .hero p {
            font-size: 1.3rem;
            max-width: 800px;
            margin: 0 auto 2rem;
            color: #e2e8f0;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 2rem 0;
        }
        article { background: white; padding: 2.5rem; border-radius: 15px; box-shadow: 0 10px 30px rgba(0,0,0,0.08); }
        .sidebar { background: #f8f9fa; padding: 2rem; border-radius: 15px; border: 1px solid #e2e8f0; }
        h1, h2, h3, h4 { color: #2d3748; margin-top: 2rem; margin-bottom: 1rem; line-height: 1.3; }
        h1 { font-size: 3rem; border-bottom: 4px solid #ffd700; padding-bottom: 0.5rem; }
        h2 { font-size: 2.2rem; color: #2c5282; border-left: 6px solid #ffd700; padding-left: 1rem; }
        h3 { font-size: 1.8rem; color: #4a5568; }
        h4 { font-size: 1.4rem; color: #718096; }
        p { margin-bottom: 1.8rem; text-align: justify; }
        .lead { font-size: 1.2rem; font-weight: 500; color: #4a5568; }
        .highlight { background: #fffacd; padding: 1.5rem; border-left: 5px solid #ffd700; border-radius: 0 10px 10px 0; margin: 2rem 0; }
        .stats-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
            margin: 3rem 0;
        }
        .stat-item {
            background: #ebf8ff;
            padding: 1.5rem;
            border-radius: 10px;
            text-align: center;
            border: 2px solid #bee3f8;
        }
        .stat-number { font-size: 2.5rem; font-weight: 900; color: #2b6cb0; }
        .stat-label { font-size: 1rem; color: #4a5568; }
        .article-img {
            width: 100%;
            border-radius: 12px;
            margin: 2rem auto;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
            border: 5px solid white;
        }
        .content-links { margin: 2rem 0; }
        .content-links ul { list-style: none; display: flex; flex-wrap: wrap; gap: 1rem; }
        .content-links li { background: #e6fffa; padding: 0.8rem 1.5rem; border-radius: 50px; border: 1px solid #81e6d9; }
        .content-links a { color: #285e61; font-weight: 600; }
        .user-interaction { background: #f7fafc; padding: 2rem; border-radius: 12px; margin: 3rem 0; border: 1px dashed #cbd5e0; }
        .form-group { margin-bottom: 1.5rem; }
        label { display: block; margin-bottom: 0.5rem; font-weight: 600; color: #4a5568; }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 1px solid #cbd5e0;
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #4299e1;
            box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.2);
        }
        button, .btn {
            background: linear-gradient(90deg, #2b6cb0, #4299e1);
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 8px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        button:hover, .btn:hover { background: #2c5282; transform: translateY(-3px); box-shadow: 0 7px 14px rgba(50, 50, 93, 0.1); }
        .rating { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
        .stars { display: flex; gap: 0.3rem; }
        .stars i { color: #ffd700; font-size: 1.5rem; cursor: pointer; transition: transform 0.2s; }
        .stars i:hover { transform: scale(1.2); }
        .comment { background: white; padding: 1.5rem; border-radius: 10px; margin-bottom: 1.5rem; border-left: 4px solid #4299e1; box-shadow: 0 3px 10px rgba(0,0,0,0.05); }
        .comment-header { display: flex; justify-content: space-between; margin-bottom: 0.8rem; }
        .comment-author { font-weight: 700; color: #2d3748; }
        .comment-date { color: #a0aec0; font-size: 0.9rem; }
        .sidebar h3 { margin-top: 0; }
        .sidebar ul { list-style: none; }
        .sidebar li { margin-bottom: 1rem; padding-bottom: 1rem; border-bottom: 1px solid #e2e8f0; }
        .sidebar a { display: block; padding: 0.5rem 0; font-weight: 500; }
        .site-footer {
            background: #1a202c;
            color: #cbd5e0;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-container { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 3rem; }
        .footer-section { flex: 1; min-width: 250px; }
        .footer-section h3 { color: #ffd700; margin-bottom: 1.5rem; font-size: 1.4rem; }
        friend-link {
            display: block;
            margin-bottom: 0.8rem;
            color: #90cdf4;
        }
        friend-link:hover { color: #63b3ed; text-decoration: underline; }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid #4a5568;
            color: #a0aec0;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
            .hero h1 { font-size: 2.8rem; }
        }
        @media (max-width: 768px) {
            .hamburger { display: flex; }
            .main-nav ul {
                position: fixed;
                top: 80px;
                left: 0;
                width: 100%;
                background: #2d3748;
                flex-direction: column;
                align-items: center;
                padding: 2rem;
                clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
                transition: clip-path 0.4s ease-in-out;
            }
            .main-nav.active ul {
                clip-path: polygon(0 0, 100% 0, 100% 100%, 0% 100%);
            }
            .hero h1 { font-size: 2.3rem; }
            .hero p { font-size: 1.1rem; }
            h1 { font-size: 2.5rem; }
            h2 { font-size: 1.9rem; }
        }