* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #0a0e17;
            color: #e0e0e0;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: #4fc3f7;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #29b6f6;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .section-padding {
            padding: 60px 0;
        }
        .text-center { text-align: center; }
        .text-highlight { color: #ffcc00; font-weight: bold; }
        .site-header {
            background: linear-gradient(135deg, #1a237e 0%, #0d47a1 100%);
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(to right, #ffcc00, #ff5722);
            -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: 30px;
        }
        .main-nav a {
            color: #bbdefb;
            font-weight: 600;
            padding: 8px 5px;
            border-bottom: 2px solid transparent;
        }
        .main-nav a:hover, .main-nav a.active {
            color: #ffffff;
            border-bottom-color: #ffcc00;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: #fff;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 15px 0;
            background-color: #111827;
            font-size: 0.9rem;
        }
        .breadcrumb ul {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin: 0 10px;
            color: #78909c;
        }
        .breadcrumb a {
            color: #b0bec5;
        }
        .hero {
            background: linear-gradient(rgba(10, 14, 23, 0.9), rgba(10, 14, 23, 0.9)), url('https://images.unsplash.com/photo-1575361204480-aadea25e6e68?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80') center/cover no-repeat;
            padding: 80px 0;
            text-align: center;
        }
        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            color: #ffffff;
            text-shadow: 2px 2px 4px #000;
        }
        .hero p {
            font-size: 1.3rem;
            max-width: 800px;
            margin: 0 auto 30px;
            color: #cfd8dc;
        }
        .search-box {
            max-width: 600px;
            margin: 40px auto;
            background: #1e293b;
            padding: 20px;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.3);
        }
        .search-box h3 {
            margin-bottom: 15px;
            color: #ffcc00;
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex-grow: 1;
            padding: 12px 15px;
            border: 2px solid #334155;
            border-radius: 5px 0 0 5px;
            background: #0f172a;
            color: #fff;
            font-size: 1rem;
        }
        .search-form button {
            background: #1e88e5;
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: 0 5px 5px 0;
            cursor: pointer;
            font-weight: bold;
            transition: background 0.3s;
        }
        .search-form button:hover {
            background: #1565c0;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin: 40px 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: #111827;
            padding: 40px;
            border-radius: 10px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.5);
        }
        .sidebar {
            background: #1e293b;
            padding: 25px;
            border-radius: 10px;
            align-self: start;
        }
        .sidebar h3 {
            color: #ffcc00;
            border-bottom: 2px solid #334155;
            padding-bottom: 10px;
            margin-bottom: 20px;
        }
        .sidebar ul {
            list-style: none;
        }
        .sidebar li {
            margin-bottom: 12px;
            padding-bottom: 12px;
            border-bottom: 1px dashed #334155;
        }
        h1, h2, h3, h4 {
            color: #ffffff;
            margin-top: 1.5em;
            margin-bottom: 0.7em;
            line-height: 1.3;
        }
        h1 { font-size: 2.8rem; }
        h2 { font-size: 2.2rem; color: #4fc3f7; border-left: 5px solid #1e88e5; padding-left: 15px; }
        h3 { font-size: 1.8rem; color: #ffcc00; }
        h4 { font-size: 1.4rem; color: #a5d6a7; }
        p {
            margin-bottom: 1.5em;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 300;
            color: #bbdefb;
        }
        strong {
            color: #ffcc00;
            font-weight: 700;
        }
        .featured-image {
            margin: 30px auto;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 15px 30px rgba(0,0,0,0.7);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #90a4ae;
            margin-top: 10px;
            font-size: 0.9rem;
        }
        blockquote {
            border-left: 4px solid #ff9800;
            padding-left: 20px;
            margin: 30px 0;
            font-style: italic;
            color: #b0bec5;
            background: #1a237e20;
            padding: 20px;
            border-radius: 0 8px 8px 0;
        }
        ul, ol {
            margin-left: 25px;
            margin-bottom: 1.5em;
        }
        .content-highlight {
            background: linear-gradient(90deg, #1a237e30, #0d47a130);
            padding: 25px;
            border-radius: 10px;
            border: 1px solid #283593;
            margin: 25px 0;
        }
        .interactive-module {
            background: #1e293b;
            padding: 30px;
            border-radius: 10px;
            margin-top: 50px;
        }
        .module-title {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #ffcc00;
            margin-bottom: 25px;
        }
        .rating-box {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 30px;
            flex-wrap: wrap;
        }
        .stars {
            display: flex;
            gap: 5px;
        }
        .star {
            font-size: 2rem;
            color: #555;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover,
        .star.active {
            color: #ffcc00;
        }
        .comment-form, .rating-form {
            display: grid;
            gap: 15px;
            margin-top: 20px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        .form-group label {
            margin-bottom: 8px;
            font-weight: 600;
            color: #bbdefb;
        }
        .form-control {
            padding: 12px;
            border-radius: 5px;
            border: 1px solid #334155;
            background: #0f172a;
            color: #fff;
            font-size: 1rem;
        }
        textarea.form-control {
            min-height: 150px;
            resize: vertical;
        }
        .btn-submit {
            background: linear-gradient(135deg, #1e88e5, #0d47a1);
            color: white;
            border: none;
            padding: 15px 25px;
            border-radius: 5px;
            font-weight: bold;
            cursor: pointer;
            transition: transform 0.3s, box-shadow 0.3s;
            justify-self: start;
        }
        .btn-submit:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(30, 136, 229, 0.4);
        }
        .site-footer {
            background: #111827;
            padding: 60px 0 30px;
            margin-top: 80px;
            border-top: 3px solid #1e88e5;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            color: #ffcc00;
            margin-bottom: 15px;
        }
        friend-link {
            display: block;
            background: #1e293b;
            padding: 15px;
            margin: 10px 0;
            border-radius: 5px;
            transition: background 0.3s;
            color: #4fc3f7;
        }
        friend-link:hover {
            background: #283593;
            text-decoration: none;
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #334155;
            color: #90a4ae;
            font-size: 0.9rem;
        }
        .update-time {
            color: #ffcc00;
            font-weight: bold;
            margin: 20px 0;
            padding: 10px;
            background: #1a237e50;
            border-radius: 5px;
            display: inline-block;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav {
                position: fixed;
                top: 80px;
                left: -100%;
                width: 80%;
                height: calc(100vh - 80px);
                background: #1a237e;
                flex-direction: column;
                padding: 30px;
                transition: left 0.4s ease;
                box-shadow: 5px 0 15px rgba(0,0,0,0.5);
            }
            .main-nav.active { left: 0; }
            .main-nav ul {
                flex-direction: column;
                gap: 20px;
            }
            .hero h1 { font-size: 2.5rem; }
            h2 { font-size: 1.8rem; }
            .article-content { padding: 25px; }
            .header-inner { padding: 0 15px; }
        }
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(30px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeInUp 0.8s ease forwards;
        }