* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-dark: #0a0e17;
            --primary-blue: #1a34ff;
            --accent-cyan: #00f7ff;
            --accent-purple: #8a2be2;
            --text-light: #f0f8ff;
            --text-gray: #b0b8c5;
            --bg-card: rgba(26, 52, 255, 0.05);
            --border-glow: rgba(0, 247, 255, 0.3);
            --transition-fast: 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            background-color: var(--primary-dark);
            color: var(--text-light);
            line-height: 1.8;
            overflow-x: hidden;
            background-image:
                radial-gradient(circle at 20% 30%, rgba(26, 52, 255, 0.1) 0%, transparent 20%),
                radial-gradient(circle at 80% 70%, rgba(138, 43, 226, 0.08) 0%, transparent 20%);
        }
        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: #ffffff;
            text-shadow: 0 0 8px var(--accent-cyan);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }
        .site-header {
            background: rgba(10, 14, 23, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-glow);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 15px 0;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(90deg, var(--primary-blue), var(--accent-cyan));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .my-logo:hover {
            filter: drop-shadow(0 0 10px var(--primary-blue));
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 30px;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        .nav-link {
            font-weight: 600;
            padding: 8px 0;
            position: relative;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-cyan);
            transition: width var(--transition-fast);
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .search-form {
            display: flex;
        }
        .search-input {
            padding: 10px 15px;
            border: 1px solid var(--primary-blue);
            background: rgba(255, 255, 255, 0.05);
            border-radius: 4px 0 0 4px;
            color: white;
            min-width: 220px;
        }
        .search-btn {
            background: var(--primary-blue);
            color: white;
            border: none;
            padding: 10px 18px;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
            transition: background var(--transition-fast);
        }
        .search-btn:hover {
            background: var(--accent-purple);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 15px 0;
            font-size: 0.9rem;
            color: var(--text-gray);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .breadcrumb a {
            color: var(--text-gray);
        }
        .breadcrumb a:hover {
            color: var(--accent-cyan);
        }
        main {
            padding: 40px 0;
        }
        article {
            background: var(--bg-card);
            border-radius: 12px;
            padding: 40px;
            border: 1px solid var(--border-glow);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
        }
        .article-header {
            text-align: center;
            margin-bottom: 50px;
            padding-bottom: 30px;
            border-bottom: 2px dashed var(--border-glow);
        }
        h1 {
            font-size: 3.2rem;
            margin-bottom: 20px;
            background: linear-gradient(to right, #fff, var(--accent-cyan));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            justify-content: center;
            gap: 30px;
            color: var(--text-gray);
            font-size: 0.95rem;
            margin-top: 20px;
        }
        .last-updated {
            color: var(--accent-cyan);
            font-weight: 600;
        }
        h2 {
            font-size: 2.2rem;
            color: var(--accent-cyan);
            margin: 50px 0 20px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border-glow);
        }
        h3 {
            font-size: 1.8rem;
            color: #a3d9ff;
            margin: 40px 0 15px;
        }
        h4 {
            font-size: 1.4rem;
            color: var(--text-gray);
            margin: 30px 0 10px;
        }
        p {
            margin-bottom: 25px;
            text-align: justify;
        }
        .highlight {
            background: rgba(0, 247, 255, 0.1);
            border-left: 4px solid var(--accent-cyan);
            padding: 20px;
            margin: 30px 0;
            border-radius: 0 8px 8px 0;
        }
        .info-box {
            background: rgba(138, 43, 226, 0.08);
            border: 1px solid var(--accent-purple);
            border-radius: 10px;
            padding: 25px;
            margin: 30px 0;
            display: grid;
            grid-template-columns: auto 1fr;
            gap: 20px;
            align-items: start;
        }
        .info-box i {
            color: var(--accent-purple);
            font-size: 1.8rem;
            margin-top: 5px;
        }
        .image-wrapper {
            margin: 40px 0;
            text-align: center;
        }
        .article-img {
            border-radius: 10px;
            border: 2px solid transparent;
            background: linear-gradient(var(--primary-dark), var(--primary-dark)) padding-box,
                        linear-gradient(135deg, var(--primary-blue), var(--accent-purple)) border-box;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
            transition: transform 0.5s ease;
        }
        .article-img:hover {
            transform: scale(1.01);
        }
        .img-caption {
            font-style: italic;
            color: var(--text-gray);
            margin-top: 10px;
            font-size: 0.9rem;
        }
        ul, ol {
            margin-left: 30px;
            margin-bottom: 25px;
        }
        li {
            margin-bottom: 10px;
        }
        strong {
            color: var(--accent-cyan);
            font-weight: 700;
        }
        em {
            color: #ffb347;
        }
        .link-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 20px;
            margin: 40px 0;
        }
        .link-card {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 8px;
            padding: 20px;
            transition: all var(--transition-fast);
        }
        .link-card:hover {
            border-color: var(--accent-cyan);
            transform: translateY(-5px);
        }
        .user-feedback {
            margin-top: 60px;
            padding-top: 40px;
            border-top: 2px solid var(--border-glow);
        }
        .feedback-section {
            background: rgba(10, 14, 23, 0.7);
            border-radius: 12px;
            padding: 30px;
            margin-bottom: 40px;
        }
        .feedback-section h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .rating-widget {
            display: flex;
            align-items: center;
            gap: 15px;
            margin: 20px 0;
        }
        .star-rating {
            display: flex;
            direction: row;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #444;
            cursor: pointer;
            transition: color var(--transition-fast);
        }
        .star-rating label:hover,
        .star-rating label:hover ~ label,
        .star-rating input:checked ~ label {
            color: #ffcc00;
        }
        form {
            display: grid;
            gap: 20px;
            margin-top: 20px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        label {
            margin-bottom: 8px;
            font-weight: 600;
        }
        input, textarea, select {
            padding: 14px;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 6px;
            color: white;
            font-size: 1rem;
            transition: border var(--transition-fast);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--accent-cyan);
            box-shadow: 0 0 0 2px rgba(0, 247, 255, 0.2);
        }
        .submit-btn {
            background: linear-gradient(90deg, var(--primary-blue), var(--accent-purple));
            color: white;
            border: none;
            padding: 16px 30px;
            border-radius: 6px;
            font-weight: 700;
            font-size: 1.1rem;
            cursor: pointer;
            transition: transform var(--transition-fast), box-shadow var(--transition-fast);
            justify-self: start;
        }
        .submit-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(26, 52, 255, 0.4);
        }
        footer {
            background: rgba(5, 9, 15, 0.95);
            border-top: 1px solid var(--border-glow);
            padding: 50px 0 30px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h4 {
            color: var(--accent-cyan);
            margin-bottom: 25px;
            font-size: 1.3rem;
        }
        friend-link {
            display: inline-block;
            background: rgba(255, 255, 255, 0.03);
            padding: 10px 20px;
            border-radius: 6px;
            margin: 0 10px 10px 0;
            transition: all var(--transition-fast);
        }
        friend-link:hover {
            background: rgba(0, 247, 255, 0.1);
            transform: scale(1.05);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            color: var(--text-gray);
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.8rem; }
            h2 { font-size: 2rem; }
            .nav-list { gap: 18px; }
            .search-input { min-width: 180px; }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav .nav-list {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--primary-dark);
                flex-direction: column;
                padding: 20px;
                border-top: 1px solid var(--border-glow);
                box-shadow: 0 10px 20px rgba(0,0,0,0.5);
            }
            .main-nav .nav-list.active {
                display: flex;
            }
            .search-form { order: 1; }
            .header-container { flex-wrap: wrap; }
            .article-header, article { padding: 25px; }
            .feedback-section { padding: 25px; }
            .link-list { grid-template-columns: 1fr; }
        }
        @media (max-width: 480px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            .article-meta { flex-direction: column; gap: 10px; align-items: center; }
            .container { padding: 0 15px; }
        }