* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            min-height: 100vh;
            max-width: 100vw;
            overflow-x: hidden;
        }
        h1, h2, h3, h4 { font-weight: 800; color: #1a237e; margin-bottom: 1rem; }
        h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); line-height: 1.2; }
        h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); border-left: 5px solid #ffd600; padding-left: 15px; margin-top: 2.5rem; }
        h3 { font-size: 1.6rem; color: #283593; margin-top: 2rem; }
        h4 { font-size: 1.3rem; color: #3949ab; margin-top: 1.5rem; }
        p { margin-bottom: 1.5rem; text-align: justify; }
        a { color: #1a73e8; text-decoration: none; transition: color 0.3s; }
        a:hover { color: #0d47a1; text-decoration: underline; }
        strong { color: #d32f2f; }
        em { font-style: italic; color: #555; }
        .highlight { background-color: #fff9c4; padding: 2px 5px; border-radius: 3px; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(90deg, #1a237e 0%, #283593 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;
        }
        .my-logo {
            font-family: 'Arial Black', sans-serif;
            font-size: 1.8rem;
            color: #ffd600;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i { font-size: 2rem; }
        .my-logo:hover { color: #ffea00; text-decoration: none; }
        .main-nav { display: flex; align-items: center; }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .nav-list a {
            color: white;
            font-weight: 600;
            padding: 8px 12px;
            border-radius: 4px;
            transition: background 0.3s;
        }
        .nav-list a:hover { background: rgba(255, 255, 255, 0.15); text-decoration: none; }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            background: #e8eaf6;
            padding: 12px 0;
            margin-bottom: 2rem;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 10px;
        }
        .breadcrumb li:not(:last-child)::after {
            content: ">";
            margin-left: 10px;
            color: #666;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
        }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0,0,0,0.08);
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 2px dashed #e0e0e0;
            color: #666;
            font-size: 0.95rem;
        }
        .last-updated { color: #388e3c; font-weight: 600; }
        .featured-image {
            width: 100%;
            border-radius: 10px;
            margin: 2rem 0;
            box-shadow: 0 8px 16px rgba(0,0,0,0.1);
            transition: transform 0.5s;
        }
        .featured-image:hover { transform: scale(1.01); }
        .info-box {
            background: #e3f2fd;
            border-left: 5px solid #2196f3;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .info-box h3 { margin-top: 0; }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .sidebar-widget {
            background: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.07);
        }
        .sidebar-widget h3 {
            font-size: 1.3rem;
            margin-bottom: 1rem;
            color: #1a237e;
            padding-bottom: 8px;
            border-bottom: 2px solid #ffd600;
        }
        .search-form, .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .form-group { display: flex; flex-direction: column; }
        .form-group label { margin-bottom: 5px; font-weight: 600; color: #555; }
        input, textarea, select {
            padding: 12px;
            border: 2px solid #ddd;
            border-radius: 6px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #1a73e8;
        }
        .btn {
            background: linear-gradient(to right, #ff9800, #ffb300);
            color: white;
            border: none;
            padding: 14px 24px;
            border-radius: 6px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s;
            text-align: center;
        }
        .btn:hover {
            background: linear-gradient(to right, #f57c00, #ffa000);
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0,0,0,0.15);
            text-decoration: none;
        }
        .stars {
            display: flex;
            gap: 10px;
            justify-content: center;
            margin: 1rem 0;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover, .star.active { color: #ffd600; }
        .related-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            margin: 2rem 0;
        }
        .link-card {
            background: #f5f5f5;
            padding: 1.2rem;
            border-radius: 8px;
            transition: transform 0.3s, background 0.3s;
        }
        .link-card:hover {
            background: #e0e0e0;
            transform: translateY(-3px);
        }
        .site-footer {
            background: #1a237e;
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 { color: #ffd600; margin-bottom: 1.2rem; }
        .footer-section ul { list-style: none; }
        .footer-section li { margin-bottom: 0.8rem; }
        .footer-section a { color: #bbdefb; }
        .footer-section a:hover { color: white; }
        friend-link {
            display: block;
            padding: 10px;
            background: #283593;
            margin: 10px 0;
            border-radius: 5px;
            transition: background 0.3s;
        }
        friend-link:hover { background: #303f9f; }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #3949ab;
            color: #9fa8da;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-content { flex-wrap: wrap; }
            .nav-list {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #283593;
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1rem;
                box-shadow: 0 10px 15px rgba(0,0,0,0.2);
            }
            .nav-list.active { display: flex; }
            .hamburger { display: block; }
            .article-content { padding: 1.5rem; }
            .related-links { grid-template-columns: 1fr; }
        }
        .text-center { text-align: center; }
        .mb-2 { margin-bottom: 2rem; }
        .mt-2 { margin-top: 2rem; }
        .emoji { font-size: 1.2em; margin-right: 5px; }