* {
            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: 1.6;
            overflow-x: hidden;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        a {
            color: #60a5fa;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #38bdf8;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        header {
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
            padding: 20px 0;
            border-bottom: 2px solid #334155;
            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: 900;
            background: linear-gradient(90deg, #fbbf24, #f87171);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-transform: uppercase;
            letter-spacing: 2px;
        }
        .my-logo a {
            background: none;
            -webkit-text-fill-color: inherit;
        }
        .main-nav {
            display: flex;
            gap: 30px;
        }
        .main-nav a {
            font-weight: 600;
            padding: 8px 12px;
            border-radius: 6px;
        }
        .main-nav a:hover {
            background-color: #334155;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #fbbf24;
        }
        .breadcrumb {
            padding: 15px 0;
            font-size: 0.9rem;
            color: #94a3b8;
        }
        .breadcrumb a {
            color: #cbd5e1;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background-color: #1e293b;
                padding: 20px;
                border-radius: 8px;
                margin-top: 15px;
            }
            .main-nav.active {
                display: flex;
            }
        }
        main {
            padding: 40px 0;
        }
        .article-content {
            background-color: #1e293b;
            border-radius: 12px;
            padding: 40px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
            margin-bottom: 40px;
        }
        h1 {
            font-size: 3rem;
            color: #fbbf24;
            margin-bottom: 20px;
            text-align: center;
        }
        h2 {
            font-size: 2.2rem;
            color: #60a5fa;
            margin: 30px 0 15px;
            padding-bottom: 10px;
            border-bottom: 2px solid #334155;
        }
        h3 {
            font-size: 1.8rem;
            color: #38bdf8;
            margin: 25px 0 12px;
        }
        h4 {
            font-size: 1.4rem;
            color: #a78bfa;
            margin: 20px 0 10px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .highlight {
            background-color: #334155;
            padding: 25px;
            border-left: 5px solid #fbbf24;
            border-radius: 8px;
            margin: 25px 0;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .feature-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
            margin: 40px 0;
        }
        .feature-card {
            background: linear-gradient(145deg, #1e293b, #0f172a);
            padding: 25px;
            border-radius: 10px;
            border: 1px solid #475569;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
        }
        .form-section {
            background-color: #0f172a;
            padding: 30px;
            border-radius: 10px;
            margin: 40px 0;
            border: 1px solid #475569;
        }
        .form-group {
            margin-bottom: 20px;
        }
        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
        }
        input, textarea, select {
            width: 100%;
            padding: 12px;
            background-color: #1e293b;
            border: 1px solid #475569;
            border-radius: 6px;
            color: #e2e8f0;
            font-size: 1rem;
        }
        button {
            background: linear-gradient(90deg, #f59e0b, #dc2626);
            color: white;
            border: none;
            padding: 14px 28px;
            border-radius: 8px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        button:hover {
            transform: scale(1.05);
            box-shadow: 0 5px 15px rgba(245, 158, 11, 0.4);
        }
        .article-image {
            margin: 30px auto;
            max-width: 800px;
            border-radius: 12px;
            overflow: hidden;
            border: 3px solid #475569;
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #94a3b8;
            margin-top: 10px;
        }
        footer {
            background-color: #0f172a;
            padding: 50px 0 30px;
            border-top: 2px solid #334155;
            margin-top: 60px;
        }
        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 40px;
        }
        .footer-section {
            flex: 1;
            min-width: 250px;
        }
        .footer-section h3 {
            color: #fbbf24;
            margin-bottom: 20px;
        }
        friend-link {
            display: block;
            padding: 10px 0;
            border-bottom: 1px dotted #475569;
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            margin-top: 30px;
            border-top: 1px solid #334155;
            color: #94a3b8;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.5rem; }
            h2 { font-size: 2rem; }
            h3 { font-size: 1.6rem; }
            .article-content { padding: 30px; }
        }
        @media (max-width: 576px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.7rem; }
            .container { padding: 0 15px; }
            .article-content { padding: 20px; }
            .form-section { padding: 20px; }
        }
        .text-center { text-align: center; }
        .bold { font-weight: 700; color: #fbbf24; }
        .last-updated { color: #94a3b8; font-size: 0.9rem; margin-top: 20px; }