* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #0f172a;
            color: #f1f5f9;
            line-height: 1.8;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: #60a5fa;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #38bdf8;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
            padding: 20px 0;
            border-bottom: 3px solid #3b82f6;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .logo a.my-logo {
            font-size: 2.5rem;
            font-weight: 800;
            background: linear-gradient(90deg, #3b82f6, #8b5cf6);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
        }
        .logo a.my-logo:hover {
            background: linear-gradient(90deg, #8b5cf6, #3b82f6);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: #1e293b;
            border-radius: 30px;
            padding: 10px 20px;
            border: 1px solid #475569;
        }
        .search-box input {
            background: transparent;
            border: none;
            color: #f1f5f9;
            padding: 8px;
            width: 250px;
            outline: none;
        }
        .search-box button {
            background: #3b82f6;
            border: none;
            color: white;
            padding: 8px 15px;
            border-radius: 20px;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-box button:hover {
            background: #2563eb;
        }
        nav {
            margin-top: 20px;
        }
        .breadcrumb {
            padding: 10px 0;
            font-size: 0.9rem;
            color: #94a3b8;
        }
        .breadcrumb a {
            color: #cbd5e1;
        }
        .breadcrumb a:hover {
            color: #60a5fa;
        }
        .nav-links {
            display: flex;
            list-style: none;
            background: #1e293b;
            border-radius: 10px;
            padding: 15px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .nav-links li {
            margin: 0 15px;
        }
        .nav-links a {
            font-weight: 600;
            padding: 8px 15px;
            border-radius: 5px;
            display: block;
        }
        .nav-links a:hover {
            background: #334155;
            color: #38bdf8;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #3b82f6;
            background: none;
            border: none;
        }
        main {
            flex: 1;
            padding: 40px 0;
        }
        article {
            background: #1e293b;
            border-radius: 15px;
            padding: 40px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
            margin-bottom: 40px;
        }
        h1 {
            font-size: 3rem;
            color: #60a5fa;
            margin-bottom: 20px;
            text-align: center;
            border-bottom: 3px solid #3b82f6;
            padding-bottom: 15px;
        }
        h2 {
            font-size: 2.2rem;
            color: #38bdf8;
            margin-top: 30px;
            margin-bottom: 15px;
            padding-left: 10px;
            border-left: 5px solid #8b5cf6;
        }
        h3 {
            font-size: 1.8rem;
            color: #a78bfa;
            margin-top: 25px;
            margin-bottom: 12px;
        }
        h4 {
            font-size: 1.4rem;
            color: #c4b5fd;
            margin-top: 20px;
            margin-bottom: 10px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
            padding: 0 10px;
            color: #e2e8f0;
        }
        .highlight {
            background: #334155;
            padding: 20px;
            border-radius: 10px;
            border-left: 4px solid #3b82f6;
            margin: 20px 0;
        }
        .highlight strong {
            color: #60a5fa;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            border: 3px solid #475569;
            display: block;
            margin: 30px auto;
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.5);
        }
        .update-time {
            text-align: right;
            font-style: italic;
            color: #94a3b8;
            margin-bottom: 20px;
            padding-right: 10px;
        }
        .interactive {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin: 40px 0;
        }
        .card {
            background: #334155;
            padding: 25px;
            border-radius: 12px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 12px 24px rgba(0, 0, 0, 0.6);
        }
        .card h3 {
            color: #38bdf8;
            margin-top: 0;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            color: #cbd5e1;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px;
            background: #1e293b;
            border: 1px solid #475569;
            border-radius: 8px;
            color: #f1f5f9;
            outline: none;
            transition: border-color 0.3s;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #3b82f6;
        }
        .btn {
            background: linear-gradient(90deg, #3b82f6, #8b5cf6);
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: 8px;
            cursor: pointer;
            font-weight: 600;
            transition: background 0.3s;
        }
        .btn:hover {
            background: linear-gradient(90deg, #8b5cf6, #3b82f6);
        }
        .rating {
            display: flex;
            gap: 10px;
            margin: 15px 0;
        }
        .rating input {
            display: none;
        }
        .rating label {
            font-size: 2rem;
            color: #94a3b8;
            cursor: pointer;
            transition: color 0.3s;
        }
        .rating input:checked ~ label,
        .rating label:hover,
        .rating label:hover ~ label {
            color: #fbbf24;
        }
        footer {
            background: #1e293b;
            padding: 40px 0;
            border-top: 3px solid #3b82f6;
            margin-top: auto;
        }
        .friend-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin-bottom: 30px;
        }
        friend-link {
            display: block;
            background: #334155;
            padding: 15px;
            border-radius: 8px;
            text-align: center;
            transition: background 0.3s;
        }
        friend-link:hover {
            background: #475569;
        }
        .copyright {
            text-align: center;
            color: #94a3b8;
            padding-top: 20px;
            border-top: 1px solid #475569;
        }
        @media (max-width: 768px) {
            .header-top {
                flex-direction: column;
                gap: 20px;
            }
            .search-box input {
                width: 200px;
            }
            .hamburger {
                display: block;
                margin-top: 10px;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                padding: 20px;
            }
            .nav-links.active {
                display: flex;
            }
            .nav-links li {
                margin: 10px 0;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            article {
                padding: 25px;
            }
            .interactive {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            .logo a.my-logo {
                font-size: 2rem;
            }
            .search-box input {
                width: 150px;
            }
            h1 {
                font-size: 1.8rem;
            }
            p {
                padding: 0 5px;
            }
        }