* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #0f172a;
            color: #f1f5f9;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: #60a5fa;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #93c5fd;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            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: 1.5rem 0;
            border-bottom: 2px solid #334155;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(90deg, #3b82f6, #8b5cf6);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            display: flex;
            align-items: center;
        }
        .logo a i {
            margin-right: 10px;
            color: #8b5cf6;
        }
        .logo a:hover {
            opacity: 0.9;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav a {
            color: #cbd5e1;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        nav a:hover {
            color: #60a5fa;
        }
        nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: #60a5fa;
            transition: width 0.3s ease;
        }
        nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #cbd5e1;
        }
        .breadcrumb {
            background-color: #1e293b;
            padding: 1rem 0;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '>';
            margin: 0 10px;
            color: #64748b;
        }
        .breadcrumb a {
            color: #94a3b8;
        }
        .breadcrumb a:hover {
            color: #60a5fa;
        }
        main {
            padding: 2rem 0;
            background-color: #0f172a;
        }
        .article-header {
            margin-bottom: 3rem;
            text-align: center;
            padding: 2rem;
            background: linear-gradient(rgba(30, 41, 59, 0.8), rgba(15, 23, 42, 0.9)), url('https://images.unsplash.com/photo-1519681393784-d120267933ba?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80') center/cover no-repeat;
            border-radius: 12px;
        }
        h1 {
            font-size: 3.2rem;
            margin-bottom: 1rem;
            color: #e2e8f0;
            line-height: 1.2;
            text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
        }
        .article-meta {
            color: #94a3b8;
            font-size: 0.95rem;
            margin-bottom: 1.5rem;
        }
        .article-meta i {
            margin-right: 5px;
        }
        .lead {
            font-size: 1.3rem;
            color: #cbd5e1;
            max-width: 800px;
            margin: 0 auto 2rem;
        }
        .content-section {
            margin-bottom: 3rem;
            padding: 2rem;
            background-color: #1e293b;
            border-radius: 12px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
            transition: transform 0.3s ease;
        }
        .content-section:hover {
            transform: translateY(-5px);
        }
        h2 {
            font-size: 2.4rem;
            color: #38bdf8;
            margin-bottom: 1.5rem;
            border-left: 5px solid #3b82f6;
            padding-left: 15px;
        }
        h3 {
            font-size: 1.8rem;
            color: #7dd3fc;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.4rem;
            color: #bae6fd;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            color: #e2e8f0;
            text-align: justify;
        }
        .highlight {
            background-color: rgba(56, 189, 248, 0.1);
            border-left: 4px solid #38bdf8;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .highlight p {
            margin-bottom: 0;
        }
        .image-container {
            margin: 2rem auto;
            text-align: center;
        }
        .image-container figcaption {
            font-style: italic;
            color: #94a3b8;
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
            color: #cbd5e1;
        }
        li {
            margin-bottom: 0.5rem;
        }
        strong {
            color: #fbbf24;
            font-weight: 700;
        }
        em {
            color: #86efac;
            font-style: italic;
        }
        .interactive-box {
            background: linear-gradient(145deg, #1e40af, #1e1b4b);
            padding: 2rem;
            border-radius: 12px;
            margin: 3rem 0;
            text-align: center;
        }
        .interactive-box h3 {
            color: #fff;
            margin-bottom: 1.5rem;
        }
        form {
            display: grid;
            gap: 1rem;
            max-width: 600px;
            margin: 0 auto;
        }
        input, textarea, select {
            padding: 0.8rem 1rem;
            border: 1px solid #475569;
            border-radius: 8px;
            background-color: #0f172a;
            color: #f1f5f9;
            font-size: 1rem;
            width: 100%;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #60a5fa;
            box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.2);
        }
        button {
            background: linear-gradient(90deg, #3b82f6, #6366f1);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 8px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 1rem;
        }
        button:hover {
            background: linear-gradient(90deg, #6366f1, #3b82f6);
            transform: scale(1.03);
        }
        .star-rating {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin: 1rem 0;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #475569;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label {
            color: #fbbf24;
        }
        footer {
            background-color: #0f172a;
            border-top: 2px solid #334155;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 {
            color: #38bdf8;
            margin-bottom: 1rem;
            font-size: 1.3rem;
        }
        .footer-section p, .footer-section a {
            color: #94a3b8;
            margin-bottom: 0.5rem;
            display: block;
        }
        .footer-section a:hover {
            color: #60a5fa;
        }
        friend-link {
            display: inline-block;
            background-color: #1e293b;
            padding: 0.5rem 1rem;
            border-radius: 6px;
            margin-right: 0.5rem;
            margin-bottom: 0.5rem;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #334155;
            color: #64748b;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.8rem; }
            h2 { font-size: 2.2rem; }
            .header-container { flex-wrap: wrap; }
            nav ul { gap: 1rem; }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background-color: #1e293b;
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1rem;
                border-top: 1px solid #334155;
                box-shadow: 0 10px 15px rgba(0,0,0,0.2);
            }
            nav ul.active {
                display: flex;
            }
            nav li {
                margin: 0.5rem 0;
            }
            .header-container {
                padding: 0 1rem;
            }
            .content-section {
                padding: 1.5rem;
            }
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
            h3 { font-size: 1.6rem; }
        }
        @media (max-width: 480px) {
            h1 { font-size: 2rem; }
            .lead { font-size: 1.1rem; }
            .interactive-box { padding: 1.5rem; }
        }
        .text-center { text-align: center; }
        .mb-2 { margin-bottom: 2rem; }
        .mt-2 { margin-top: 2rem; }
        .emoji { font-size: 1.2em; margin-right: 5px; }