* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #0f172a;
            color: #e2e8f0;
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: #60a5fa;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #38bdf8;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
            padding: 1rem 0;
            border-bottom: 2px solid #334155;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(90deg, #3b82f6, #8b5cf6);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo a:hover {
            text-decoration: none;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        nav a {
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0.8rem;
            border-radius: 6px;
        }
        nav a:hover {
            background-color: rgba(96, 165, 250, 0.15);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: #e2e8f0;
            border-radius: 2px;
        }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            color: #94a3b8;
        }
        .breadcrumb a {
            color: #cbd5e1;
        }
        main {
            flex: 1;
            padding: 2rem 0;
        }
        .article-header {
            text-align: center;
            margin-bottom: 3rem;
            padding-bottom: 2rem;
            border-bottom: 1px solid #334155;
        }
        h1 {
            font-size: 3rem;
            color: #f8fafc;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article-meta {
            color: #94a3b8;
            font-size: 0.95rem;
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            flex-wrap: wrap;
        }
        .article-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            .article-content {
                grid-template-columns: 1fr;
            }
        }
        .content-main h2 {
            font-size: 2.2rem;
            color: #e2e8f0;
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #3b82f6;
        }
        .content-main h3 {
            font-size: 1.8rem;
            color: #cbd5e1;
            margin-top: 2rem;
            margin-bottom: 0.8rem;
        }
        .content-main h4 {
            font-size: 1.4rem;
            color: #94a3b8;
            margin-top: 1.5rem;
            margin-bottom: 0.5rem;
        }
        .content-main p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight-box {
            background: #1e293b;
            border-left: 5px solid #3b82f6;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .highlight-box strong {
            color: #60a5fa;
        }
        .sidebar {
            background: #1e293b;
            padding: 1.5rem;
            border-radius: 12px;
            height: fit-content;
            border: 1px solid #334155;
        }
        .sidebar-widget {
            margin-bottom: 2rem;
        }
        .sidebar-widget h3 {
            font-size: 1.3rem;
            margin-bottom: 1rem;
            color: #f8fafc;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid #475569;
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex: 1;
            padding: 0.8rem;
            border: 1px solid #475569;
            background: #0f172a;
            color: #e2e8f0;
            border-radius: 6px 0 0 6px;
        }
        .search-form button {
            background: #3b82f6;
            color: white;
            border: none;
            padding: 0.8rem 1.2rem;
            border-radius: 0 6px 6px 0;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-form button:hover {
            background: #2563eb;
        }
        .link-list {
            list-style: none;
        }
        .link-list li {
            margin-bottom: 0.8rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px dashed #475569;
        }
        .link-list a {
            display: block;
            padding: 0.5rem;
            border-radius: 4px;
        }
        .link-list a:hover {
            background-color: rgba(96, 165, 250, 0.1);
        }
        .user-interaction {
            background: #1e293b;
            padding: 2rem;
            border-radius: 12px;
            margin-top: 3rem;
            border: 1px solid #334155;
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }
        .rating-form label, .comment-form label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            margin-bottom: 1rem;
        }
        .star {
            font-size: 1.5rem;
            color: #475569;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star.active {
            color: #fbbf24;
        }
        .rating-form textarea, .comment-form textarea, .comment-form input {
            width: 100%;
            padding: 0.8rem;
            background: #0f172a;
            border: 1px solid #475569;
            color: #e2e8f0;
            border-radius: 6px;
            margin-bottom: 1rem;
        }
        .rating-form button, .comment-form button {
            background: #10b981;
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 6px;
            cursor: pointer;
            font-weight: 600;
            transition: background 0.3s;
        }
        .rating-form button:hover, .comment-form button:hover {
            background: #059669;
        }
        footer {
            background: #1e293b;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
            border-top: 2px solid #334155;
        }
        .footer-container {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            justify-content: center;
            padding: 1.5rem;
            background: #0f172a;
            border-radius: 8px;
        }
        friend-link a {
            background: #334155;
            padding: 0.6rem 1.2rem;
            border-radius: 20px;
            font-size: 0.9rem;
        }
        friend-link a:hover {
            background: #475569;
            text-decoration: none;
        }
        .copyright {
            text-align: center;
            color: #94a3b8;
            font-size: 0.9rem;
            padding-top: 1.5rem;
            border-top: 1px solid #334155;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
            .header-container {
                flex-direction: column;
                align-items: flex-start;
            }
            nav {
                width: 100%;
                display: none;
                margin-top: 1rem;
            }
            nav.active {
                display: block;
            }
            nav ul {
                flex-direction: column;
                gap: 0.5rem;
            }
            .hamburger {
                display: flex;
                position: absolute;
                top: 1.2rem;
                right: 20px;
            }
            .article-content {
                gap: 2rem;
            }
            .interaction-grid {
                grid-template-columns: 1fr;
            }
        }