* {
            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: #e2e8f0;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: #60a5fa;
            text-decoration: none;
            transition: color 0.3s ease, transform 0.2s ease;
        }
        a:hover {
            color: #93c5fd;
            transform: translateY(-1px);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 8px;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
            padding: 1.5rem 0;
            border-bottom: 3px solid #3b82f6;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(to right, #60a5fa, #a78bfa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: 1px;
        }
        .my-logo a {
            background: none;
            -webkit-text-fill-color: unset;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 1rem;
            border-radius: 6px;
        }
        .main-nav a:hover {
            background-color: rgba(96, 165, 250, 0.15);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #60a5fa;
            background: none;
            border: none;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #1e293b;
            font-size: 0.95rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "›";
            margin: 0 10px;
            color: #94a3b8;
        }
        main {
            padding: 2rem 0;
            background-color: #0f172a;
        }
        .article-header {
            text-align: center;
            margin-bottom: 3rem;
            padding-bottom: 2rem;
            border-bottom: 2px solid #334155;
        }
        h1 {
            font-size: 3.2rem;
            margin-bottom: 1rem;
            background: linear-gradient(90deg, #60a5fa, #c084fc);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
        }
        .meta-info {
            color: #94a3b8;
            font-size: 0.95rem;
            margin-top: 1.5rem;
        }
        .content-section {
            margin-bottom: 3.5rem;
            background-color: #1e293b;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .content-section:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 24px rgba(0, 0, 0, 0.4);
        }
        h2 {
            font-size: 2.5rem;
            color: #38bdf8;
            margin-bottom: 1.5rem;
            border-left: 5px solid #3b82f6;
            padding-left: 1rem;
        }
        h3 {
            font-size: 2rem;
            color: #a78bfa;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.5rem;
            color: #67e8f9;
            margin: 1.5rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.15rem;
            text-align: justify;
        }
        .highlight {
            background-color: rgba(96, 165, 250, 0.15);
            border-left: 4px solid #60a5fa;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .feature-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .feature-card {
            background: linear-gradient(145deg, #1e293b, #334155);
            padding: 1.8rem;
            border-radius: 10px;
            border: 1px solid #475569;
        }
        .interactive-box {
            background-color: #0f172a;
            border: 2px solid #3b82f6;
            border-radius: 12px;
            padding: 2rem;
            margin: 3rem 0;
        }
        .interactive-box h3 {
            margin-top: 0;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
            max-width: 600px;
        }
        input, textarea, select {
            padding: 1rem;
            border-radius: 8px;
            border: 1px solid #475569;
            background-color: #1e293b;
            color: #e2e8f0;
            font-size: 1rem;
        }
        button {
            background: linear-gradient(90deg, #3b82f6, #8b5cf6);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 8px;
            font-weight: bold;
            font-size: 1.1rem;
            cursor: pointer;
            transition: all 0.3s ease;
            align-self: flex-start;
        }
        button:hover {
            background: linear-gradient(90deg, #2563eb, #7c3aed);
            transform: scale(1.05);
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            font-size: 2rem;
            color: #fbbf24;
            margin: 1rem 0;
        }
        .rating-stars i {
            cursor: pointer;
            transition: transform 0.2s;
        }
        .rating-stars i:hover {
            transform: scale(1.2);
        }
        .article-image {
            margin: 2.5rem auto;
            max-width: 900px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #94a3b8;
            margin-top: 0.8rem;
            font-size: 0.95rem;
        }
        .site-footer {
            background-color: #1e293b;
            padding: 3rem 0 1.5rem;
            border-top: 3px solid #3b82f6;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-section h4 {
            color: #60a5fa;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        friend-link {
            display: block;
            background-color: #334155;
            padding: 1rem;
            margin-bottom: 1rem;
            border-radius: 6px;
            transition: background-color 0.3s;
        }
        friend-link:hover {
            background-color: #475569;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #475569;
            color: #94a3b8;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.8rem; }
            h2 { font-size: 2.2rem; }
            .main-nav ul { gap: 1rem; }
            .content-section { padding: 2rem; }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav {
                position: fixed;
                top: 90px;
                left: -100%;
                width: 100%;
                background-color: #1e293b;
                padding: 2rem;
                transition: left 0.4s ease;
                z-index: 999;
                border-top: 2px solid #334155;
            }
            .main-nav.active {
                left: 0;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 1.5rem;
            }
            .header-content {
                flex-wrap: wrap;
            }
            .feature-list {
                grid-template-columns: 1fr;
            }
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
            h3 { font-size: 1.7rem; }
        }
        @media (max-width: 480px) {
            .container { padding: 0 15px; }
            h1 { font-size: 2rem; }
            .content-section { padding: 1.5rem; }
            .interactive-box { padding: 1.5rem; }
        }
        .text-center { text-align: center; }
        .mb-3 { margin-bottom: 3rem; }
        .mt-3 { margin-top: 3rem; }
        .emoji { font-size: 1.3rem; margin-right: 5px; }
        .keyword { font-weight: bold; color: #a78bfa; }