* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background: linear-gradient(135deg, #0c1a2d 0%, #1a3a5f 100%);
            color: #e0e0e0;
            line-height: 1.7;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: #4dabf7;
            text-decoration: none;
            transition: color 0.3s, transform 0.2s;
        }
        a:hover {
            color: #a5d8ff;
            transform: translateY(-1px);
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .section-padding {
            padding: 60px 0;
        }
        .text-center { text-align: center; }
        .bold { font-weight: 700; }
        .highlight {
            background: linear-gradient(90deg, rgba(77, 171, 247, 0.2) 0%, transparent 100%);
            padding: 2px 8px;
            border-left: 4px solid #4dabf7;
        }
        .site-header {
            background: rgba(12, 26, 45, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 2px solid #2a4a6e;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(90deg, #ff9a00, #ffdd00);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 2px 10px rgba(255, 154, 0, 0.3);
            letter-spacing: 1px;
        }
        .my-logo:hover {
            transform: scale(1.03);
        }
        .nav-desktop {
            display: flex;
            gap: 30px;
        }
        .nav-desktop a {
            color: #c2e0ff;
            font-weight: 600;
            padding: 8px 0;
            position: relative;
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: #ff9a00;
            transition: width 0.3s;
        }
        .nav-desktop a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: #ffdd00;
            cursor: pointer;
            padding: 5px;
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background: rgba(20, 40, 70, 0.98);
            padding: 20px;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            border-top: 1px solid #2a4a6e;
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            padding: 15px;
            border-bottom: 1px solid #2a4a6e;
            color: #c2e0ff;
            font-weight: 600;
        }
        .nav-mobile a:last-child {
            border-bottom: none;
        }
        .breadcrumb {
            padding: 15px 20px;
            background: rgba(20, 40, 70, 0.6);
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #a5d8ff;
        }
        .breadcrumb span {
            color: #ccc;
            margin: 0 8px;
        }
        main {
            flex: 1;
        }
        .article-header {
            padding: 60px 20px;
            background: radial-gradient(ellipse at center, #1a3a5f 0%, #0c1a2d 100%);
            border-bottom: 3px solid #ff9a00;
        }
        .article-header h1 {
            font-size: 3.2rem;
            margin-bottom: 20px;
            color: #ffffff;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
            line-height: 1.2;
        }
        .meta-info {
            display: flex;
            gap: 20px;
            color: #aaa;
            font-size: 0.95rem;
            margin-top: 25px;
        }
        .content-section {
            padding: 40px 0;
            border-bottom: 1px solid #2a4a6e;
        }
        h2 {
            font-size: 2.5rem;
            color: #ffdd00;
            margin-bottom: 25px;
            padding-bottom: 10px;
            border-bottom: 2px dashed #4dabf7;
        }
        h3 {
            font-size: 1.9rem;
            color: #a5d8ff;
            margin: 30px 0 15px;
        }
        h4 {
            font-size: 1.5rem;
            color: #80c2ff;
            margin: 25px 0 12px;
        }
        p {
            margin-bottom: 22px;
            font-size: 1.1rem;
            text-align: justify;
        }
        .image-wrapper {
            margin: 35px auto;
            max-width: 900px;
            position: relative;
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #aaa;
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .feature-box {
            background: rgba(30, 60, 100, 0.4);
            border-radius: 15px;
            padding: 30px;
            margin: 40px 0;
            border-left: 5px solid #ff9a00;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
        }
        .feature-box h3 {
            margin-top: 0;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #c2e0ff;
        }
        .form-control {
            width: 100%;
            padding: 12px 16px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid #4dabf7;
            border-radius: 8px;
            color: #fff;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-control:focus {
            outline: none;
            border-color: #ffdd00;
            background: rgba(255, 255, 255, 0.15);
        }
        textarea.form-control {
            min-height: 120px;
            resize: vertical;
        }
        .btn {
            background: linear-gradient(90deg, #ff9a00, #ffdd00);
            color: #0c1a2d;
            border: none;
            padding: 14px 28px;
            border-radius: 8px;
            font-weight: 700;
            font-size: 1.1rem;
            cursor: pointer;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(255, 154, 0, 0.4);
        }
        .rating-stars {
            display: flex;
            gap: 10px;
            margin: 15px 0;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            font-size: 2rem;
            color: #555;
            cursor: pointer;
            transition: color 0.3s;
        }
        .rating-stars input:checked ~ label,
        .rating-stars label:hover,
        .rating-stars label:hover ~ label {
            color: #ffdd00;
        }
        .site-footer {
            background: #0a1525;
            padding: 50px 0 30px;
            margin-top: 60px;
            border-top: 3px solid #2a4a6e;
        }
        .footer-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
            margin-bottom: 40px;
        }
        .footer-links h4 {
            color: #ffdd00;
            margin-bottom: 20px;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        friend-link {
            display: inline-block;
            background: rgba(77, 171, 247, 0.15);
            padding: 10px 20px;
            border-radius: 6px;
            margin: 5px;
            border: 1px solid #4dabf7;
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #2a4a6e;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .article-header h1 { font-size: 2.7rem; }
            h2 { font-size: 2.2rem; }
        }
        @media (max-width: 768px) {
            .nav-desktop { display: none; }
            .hamburger { display: block; }
            .article-header h1 { font-size: 2.2rem; }
            h2 { font-size: 1.9rem; }
            h3 { font-size: 1.6rem; }
            .header-container, .breadcrumb { padding: 15px; }
            .feature-box { padding: 20px; }
            .meta-info { flex-direction: column; gap: 10px; }
        }
        @media (max-width: 480px) {
            .article-header h1 { font-size: 1.9rem; }
            .btn { width: 100%; }
        }