* { 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%, #e4e8ed 100%);
            background-attachment: fixed;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a { color: #2c5aa0; text-decoration: none; transition: all 0.3s ease; }
        a:hover { color: #e63946; text-decoration: underline; }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(90deg, #1a237e 0%, #283593 50%, #3949ab 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-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Arial Black', sans-serif;
            font-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(to right, #4fc3f7, #00e5ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0 2px 4px rgba(0,0,0,0.2);
        }
        .my-logo:hover { text-decoration: none; transform: scale(1.03); }
        .main-nav { display: flex; align-items: center; }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .nav-list a {
            color: #e3f2fd;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
        }
        .nav-list a:hover {
            background: rgba(255,255,255,0.15);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            background: none;
            border: none;
            color: white;
        }
        .breadcrumb {
            padding: 1rem 0;
            background: #f1f5fd;
            font-size: 0.9rem;
        }
        .breadcrumb a { color: #555; }
        .breadcrumb a:last-child { color: #1a237e; font-weight: bold; }
        .main-content {
            flex: 1;
            padding: 2rem 0;
        }
        .article-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            .article-grid { grid-template-columns: 1fr; }
        }
        article {
            background: white;
            border-radius: 12px;
            padding: 2.5rem;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
        }
        h1 {
            font-size: 2.8rem;
            color: #1a237e;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-left: 6px solid #e63946;
            padding-left: 1rem;
        }
        h2 {
            font-size: 2rem;
            color: #283593;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed #c5cae9;
        }
        h3 {
            font-size: 1.6rem;
            color: #3949ab;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #5c6bc0;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .highlight-box {
            background: linear-gradient(135deg, #e3f2fd, #f3e5f5);
            border-left: 5px solid #7e57c2;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
            box-shadow: 0 5px 15px rgba(0,0,0,0.03);
        }
        .feature-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .feature-card {
            background: #f8f9fa;
            border: 1px solid #e9ecef;
            border-radius: 10px;
            padding: 1.5rem;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
        }
        .feature-card i {
            color: #2c5aa0;
            font-size: 2rem;
            margin-bottom: 1rem;
        }
        .article-image {
            width: 100%;
            border-radius: 10px;
            margin: 2rem auto;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
            border: 3px solid #e3f2fd;
        }
        .sidebar {
            background: white;
            border-radius: 12px;
            padding: 2rem;
            box-shadow: 0 8px 20px rgba(0,0,0,0.06);
            align-self: start;
        }
        .widget { margin-bottom: 2.5rem; }
        .widget-title {
            font-size: 1.4rem;
            color: #1a237e;
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #c5cae9;
        }
        .search-form {
            display: flex;
            margin-bottom: 1rem;
        }
        .search-input {
            flex: 1;
            padding: 0.9rem 1rem;
            border: 2px solid #c5cae9;
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
        }
        .search-btn {
            background: #2c5aa0;
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-btn:hover { background: #1a237e; }
        .rating-widget {
            text-align: center;
            padding: 1.5rem;
            background: #f9f9ff;
            border-radius: 10px;
        }
        .stars { font-size: 1.8rem; color: #ffc107; margin-bottom: 1rem; }
        .stars i { cursor: pointer; margin: 0 2px; }
        .comment-form textarea {
            width: 100%;
            padding: 1rem;
            border: 2px solid #c5cae9;
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
            margin-bottom: 1rem;
            resize: vertical;
            min-height: 120px;
        }
        .submit-btn {
            background: linear-gradient(90deg, #e63946, #d90429);
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            width: 100%;
            transition: opacity 0.3s;
        }
        .submit-btn:hover { opacity: 0.9; }
        .related-links {
            background: #f1f5fd;
            padding: 1.5rem;
            border-radius: 10px;
            margin-top: 2rem;
        }
        .related-links ul { list-style: none; }
        .related-links li { margin-bottom: 0.8rem; padding-left: 1.2rem; position: relative; }
        .related-links li:before { content: '🏍️'; position: absolute; left: 0; }
        .site-footer {
            background: #1a237e;
            color: #e3f2fd;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-links a {
            color: #bbdefb;
            display: block;
            margin-bottom: 0.7rem;
        }
        .friend-link {
            background: rgba(255,255,255,0.05);
            padding: 1.5rem;
            border-radius: 8px;
            margin: 1.5rem 0;
            border-left: 4px solid #4fc3f7;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #3949ab;
            font-size: 0.95rem;
            color: #90caf9;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .nav-list {
                position: fixed;
                top: 70px;
                right: -100%;
                flex-direction: column;
                background: #1a237e;
                width: 80%;
                height: calc(100vh - 70px);
                padding: 2rem;
                transition: right 0.4s ease;
                box-shadow: -5px 0 15px rgba(0,0,0,0.2);
                z-index: 999;
            }
            .nav-list.active { right: 0; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            article, .sidebar { padding: 1.8rem; }
        }
        .last-updated {
            font-style: italic;
            color: #666;
            background: #f9f9f9;
            padding: 0.5rem 1rem;
            border-radius: 6px;
            display: inline-block;
            margin-bottom: 1.5rem;
        }
        .keyword { font-weight: bold; color: #1a237e; background-color: #e3f2fd; padding: 0 4px; border-radius: 3px; }
        .emoji { font-size: 1.2em; margin-right: 5px; }
        .text-center { text-align: center; }
        .mb-3 { margin-bottom: 3rem; }