* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
            max-width: 100vw;
            overflow-x: hidden;
        }
        .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        header { background: linear-gradient(135deg, #1a237e 0%, #4a148c 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-content { display: flex; justify-content: space-between; align-items: center; }
        .logo a { font-size: 1.8rem; font-weight: 800; color: #ffeb3b; text-decoration: none; letter-spacing: -0.5px; }
        .logo a:hover { color: #fff; text-shadow: 0 0 8px rgba(255, 235, 59, 0.7); }
        nav ul { display: flex; list-style: none; gap: 2rem; }
        nav a { color: #e3f2fd; text-decoration: none; font-weight: 600; padding: 0.5rem 1rem; border-radius: 4px; transition: all 0.3s ease; }
        nav a:hover, nav a.active { background-color: rgba(255, 255, 255, 0.15); color: #ffeb3b; }
        .hamburger { display: none; font-size: 1.5rem; background: none; border: none; color: white; cursor: pointer; }
        .breadcrumb { padding: 1rem 0; background-color: #e8eaf6; font-size: 0.9rem; }
        .breadcrumb ol { display: flex; flex-wrap: wrap; list-style: none; }
        .breadcrumb li:not(:last-child)::after { content: '›'; margin: 0 0.5rem; color: #666; }
        .breadcrumb a { color: #1a237e; text-decoration: none; }
        .breadcrumb a:hover { text-decoration: underline; }
        main { padding: 2rem 0; display: grid; grid-template-columns: 1fr 300px; gap: 3rem; }
        @media (max-width: 992px) { main { grid-template-columns: 1fr; } }
        .content-area { background: white; padding: 2.5rem; border-radius: 12px; box-shadow: 0 5px 15px rgba(0,0,0,0.05); }
        h1 { color: #1a237e; font-size: 2.8rem; margin-bottom: 1.5rem; line-height: 1.2; border-left: 6px solid #ff9800; padding-left: 1rem; }
        h2 { color: #4a148c; font-size: 2rem; margin: 2.5rem 0 1rem; padding-bottom: 0.5rem; border-bottom: 2px solid #e1bee7; }
        h3 { color: #6a1b9a; font-size: 1.6rem; margin: 2rem 0 1rem; }
        h4 { color: #8e24aa; font-size: 1.3rem; margin: 1.5rem 0 0.8rem; }
        p { margin-bottom: 1.5rem; font-size: 1.05rem; text-align: justify; }
        strong { color: #d81b60; }
        .intro { font-size: 1.2rem; background: #f3e5f5; padding: 1.5rem; border-radius: 8px; margin-bottom: 2rem; border-left: 4px solid #9c27b0; }
        a.content-link { color: #1e88e5; text-decoration: none; border-bottom: 1px dotted #1e88e5; }
        a.content-link:hover { color: #0d47a1; border-bottom-style: solid; }
        .feature-box { background: linear-gradient(to right, #e3f2fd, #fce4ec); padding: 1.5rem; border-radius: 10px; margin: 2rem 0; border-left: 5px solid #2196f3; }
        .interactive-box { background: #f5f5f5; padding: 2rem; border-radius: 10px; margin: 2rem 0; }
        .interactive-box h3 { margin-top: 0; }
        .form-group { margin-bottom: 1rem; }
        label { display: block; margin-bottom: 0.5rem; font-weight: 600; }
        input, textarea, select { width: 100%; padding: 0.8rem; border: 1px solid #ccc; border-radius: 6px; font-family: inherit; }
        button { background: linear-gradient(to right, #1a237e, #4a148c); color: white; border: none; padding: 0.9rem 2rem; border-radius: 6px; font-weight: bold; cursor: pointer; transition: transform 0.2s, box-shadow 0.2s; }
        button:hover { transform: translateY(-2px); box-shadow: 0 5px 15px rgba(26, 35, 126, 0.3); }
        .rating { display: flex; gap: 0.5rem; font-size: 1.8rem; color: #ffc107; margin: 1rem 0; }
        .rating i { cursor: pointer; }
        aside { background: white; padding: 2rem; border-radius: 12px; box-shadow: 0 5px 15px rgba(0,0,0,0.05); align-self: start; position: sticky; top: 120px; }
        .sidebar-widget { margin-bottom: 2.5rem; }
        .sidebar-widget h3 { font-size: 1.3rem; color: #5e35b1; margin-bottom: 1rem; padding-bottom: 0.5rem; border-bottom: 1px solid #d1c4e9; }
        .link-list { list-style: none; }
        .link-list li { margin-bottom: 0.8rem; }
        .link-list a { display: block; padding: 0.8rem; background: #f3e5f5; border-radius: 6px; text-decoration: none; color: #4a148c; transition: all 0.3s; }
        .link-list a:hover { background: #e1bee7; transform: translateX(5px); }
        .update-info { background: #e8f5e9; padding: 1rem; border-radius: 8px; font-size: 0.9rem; color: #2e7d32; }
        .article-img { width: 100%; height: auto; border-radius: 12px; margin: 2rem 0; box-shadow: 0 8px 20px rgba(0,0,0,0.1); transition: transform 0.5s ease; }
        .article-img:hover { transform: scale(1.01); }
        footer { background: #1a237e; color: #bbdefb; padding: 3rem 0 1.5rem; margin-top: 3rem; }
        .footer-content { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 2.5rem; }
        .footer-section h3 { color: #ffeb3b; margin-bottom: 1.5rem; font-size: 1.3rem; }
        friend-link { display: block; margin-bottom: 0.8rem; }
        friend-link a { color: #bbdefb; text-decoration: none; }
        friend-link a:hover { color: #ffeb3b; text-decoration: underline; }
        .copyright { text-align: center; padding-top: 2rem; margin-top: 2rem; border-top: 1px solid #3949ab; font-size: 0.9rem; color: #90caf9; }
        @media (max-width: 768px) {
            .header-content { flex-wrap: wrap; }
            nav ul { display: none; flex-direction: column; width: 100%; background: #4a148c; position: absolute; top: 100%; left: 0; padding: 1rem; gap: 0; }
            nav ul.active { display: flex; }
            nav li { width: 100%; }
            nav a { display: block; padding: 1rem; border-bottom: 1px solid rgba(255,255,255,0.1); }
            .hamburger { display: block; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            .content-area { padding: 1.5rem; }
        }
        .text-center { text-align: center; }
        .mb-3 { margin-bottom: 3rem; }
        .emoji { font-size: 1.2em; vertical-align: middle; }