* {
            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: 1.8;
            font-size: 1.1rem;
            overflow-x: hidden;
        }
        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-color: #1e293b;
            padding: 20px 0;
            border-bottom: 3px solid #3b82f6;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2.5rem;
            font-weight: 800;
            color: #3b82f6;
            text-transform: uppercase;
            letter-spacing: 2px;
            text-shadow: 0 2px 4px rgba(0,0,0,0.5);
        }
        .my-logo:hover {
            color: #60a5fa;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #e2e8f0;
            font-size: 1.8rem;
            cursor: pointer;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        nav ul li a {
            color: #cbd5e1;
            font-weight: 600;
            padding: 10px 15px;
            border-radius: 5px;
        }
        nav ul li a:hover {
            background-color: #334155;
            text-decoration: none;
        }
        .breadcrumb {
            margin-top: 15px;
            font-size: 0.9rem;
            color: #94a3b8;
        }
        .breadcrumb a {
            color: #94a3b8;
        }
        .breadcrumb a:hover {
            color: #e2e8f0;
        }
        main {
            padding: 40px 0;
            background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
        }
        article {
            background-color: #1e293b;
            padding: 40px;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.3);
            margin-bottom: 40px;
        }
        h1 {
            font-size: 3.2rem;
            color: #3b82f6;
            margin-bottom: 25px;
            text-align: center;
            line-height: 1.2;
            border-bottom: 3px solid #3b82f6;
            padding-bottom: 15px;
        }
        h2 {
            font-size: 2.4rem;
            color: #60a5fa;
            margin: 40px 0 20px;
            padding-left: 15px;
            border-left: 5px solid #3b82f6;
        }
        h3 {
            font-size: 1.8rem;
            color: #93c5fd;
            margin: 30px 0 15px;
        }
        h4 {
            font-size: 1.4rem;
            color: #bfdbfe;
            margin: 25px 0 10px;
        }
        p {
            margin-bottom: 25px;
            text-align: justify;
            padding: 0 10px;
        }
        .highlight {
            background-color: #334155;
            padding: 25px;
            border-radius: 10px;
            border-left: 5px solid #3b82f6;
            margin: 30px 0;
        }
        .emoji {
            font-size: 1.5rem;
            margin-right: 10px;
        }
        b, strong {
            color: #fbbf24;
        }
        .image-wrapper {
            text-align: center;
            margin: 40px 0;
        }
        .image-wrapper img {
            border: 3px solid #3b82f6;
            box-shadow: 0 5px 15px rgba(59, 130, 246, 0.3);
        }
        .updated-time {
            text-align: right;
            font-style: italic;
            color: #94a3b8;
            margin-top: 20px;
            font-size: 0.9rem;
        }
        .form-section {
            background-color: #334155;
            padding: 30px;
            border-radius: 10px;
            margin: 40px 0;
        }
        .form-title {
            color: #60a5fa;
            margin-bottom: 20px;
            font-size: 1.8rem;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        label {
            margin-bottom: 8px;
            color: #cbd5e1;
            font-weight: 600;
        }
        input, textarea, select {
            padding: 15px;
            border: 2px solid #475569;
            border-radius: 8px;
            background-color: #1e293b;
            color: #e2e8f0;
            font-size: 1rem;
            transition: border 0.3s ease;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #3b82f6;
        }
        button {
            padding: 15px 30px;
            background-color: #3b82f6;
            color: white;
            border: none;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 700;
            cursor: pointer;
            transition: background-color 0.3s ease, transform 0.2s ease;
            align-self: flex-start;
        }
        button:hover {
            background-color: #2563eb;
            transform: translateY(-3px);
        }
        .rating-stars {
            display: flex;
            gap: 10px;
            font-size: 2rem;
            color: #fbbf24;
            margin-top: 10px;
        }
        .rating-stars i {
            cursor: pointer;
            transition: color 0.3s ease;
        }
        .rating-stars i:hover {
            color: #f59e0b;
        }
        footer {
            background-color: #1e293b;
            padding: 40px 0 20px;
            border-top: 3px solid #3b82f6;
            text-align: center;
        }
        friend-link {
            display: block;
            margin-bottom: 30px;
        }
        .friend-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 20px;
            margin-bottom: 30px;
        }
        .friend-links a {
            background-color: #334155;
            padding: 15px 25px;
            border-radius: 8px;
            font-weight: 600;
            transition: background-color 0.3s ease;
        }
        .friend-links a:hover {
            background-color: #475569;
            text-decoration: none;
        }
        .copyright {
            color: #94a3b8;
            font-size: 0.9rem;
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid #475569;
        }
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                align-items: flex-start;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 25px;
                right: 20px;
            }
            nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background-color: #334155;
                padding: 20px;
                border-radius: 10px;
                margin-top: 20px;
            }
            nav ul.active {
                display: flex;
            }
            h1 {
                font-size: 2.5rem;
            }
            h2 {
                font-size: 2rem;
            }
            h3 {
                font-size: 1.6rem;
            }
            article {
                padding: 25px;
            }
            .form-section {
                padding: 20px;
            }
        }
        .content-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin: 40px 0;
        }
        .card {
            background-color: #334155;
            padding: 25px;
            border-radius: 10px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.4);
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 15px;
        }