* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #e0e0e0;
            background-color: #0a0e17;
            background-image: radial-gradient(circle at 15% 50%, rgba(16, 64, 120, 0.1) 0%, transparent 20%), radial-gradient(circle at 85% 30%, rgba(72, 140, 200, 0.05) 0%, transparent 20%);
            max-width: 100vw;
            overflow-x: hidden;
        }
        a { color: #4dabf7; text-decoration: none; transition: color 0.3s ease, text-shadow 0.3s ease; }
        a:hover { color: #74c0fc; text-shadow: 0 0 8px rgba(116, 192, 252, 0.5); }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { padding-left: 2rem; margin: 1rem 0; }
        li { margin-bottom: 0.5rem; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .text-center { text-align: center; }
        .text-highlight { color: #4dabf7; font-weight: bold; }
        .bold { font-weight: 700; }
        .emoji { font-size: 1.2em; margin-right: 0.3rem; }
        .section-padding { padding: 4rem 0; }
        .bg-dark { background-color: rgba(10, 20, 35, 0.85); border-radius: 8px; padding: 2rem; margin: 2rem 0; border-left: 4px solid #4dabf7; }
        .site-header {
            background: linear-gradient(to bottom, rgba(5, 15, 30, 0.95) 0%, rgba(5, 15, 30, 0.8) 100%);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(72, 140, 200, 0.3);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 1rem 0;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Orbitron', 'Arial Black', sans-serif;
            font-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(90deg, #4dabf7, #339af0, #228be6);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
            letter-spacing: -0.5px;
        }
        .my-logo a { color: inherit; }
        .my-logo span { color: #ff6b6b; }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .nav-desktop { display: none; }
        }
        .nav-desktop a {
            color: #c0c0c0;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: #4dabf7;
            transition: width 0.3s ease;
        }
        .nav-desktop a:hover::after { width: 100%; }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #c0c0c0;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
        }
        .nav-mobile {
            position: fixed;
            top: 80px;
            right: -300px;
            width: 280px;
            height: calc(100vh - 80px);
            background: rgba(10, 20, 35, 0.98);
            backdrop-filter: blur(10px);
            border-left: 1px solid rgba(72, 140, 200, 0.3);
            padding: 2rem;
            transition: right 0.4s ease;
            z-index: 999;
            overflow-y: auto;
        }
        .nav-mobile.active { right: 0; }
        .nav-mobile a {
            display: block;
            color: #c0c0c0;
            padding: 1rem 0;
            border-bottom: 1px solid rgba(255,255,255,0.05);
            font-weight: 600;
        }
        .nav-mobile a:hover { color: #4dabf7; }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            color: #888;
            background-color: rgba(10, 20, 35, 0.5);
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }
        .breadcrumb a { color: #aaa; }
        .breadcrumb a:hover { color: #4dabf7; }
        .hero {
            padding: 3rem 0;
            text-align: center;
            background: radial-gradient(ellipse at center, rgba(25, 60, 110, 0.3) 0%, rgba(10, 14, 23, 0) 70%);
        }
        h1 {
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
            color: #fff;
            text-shadow: 0 0 15px rgba(77, 171, 247, 0.5);
            font-family: 'Orbitron', sans-serif;
            letter-spacing: -0.5px;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.5rem; }
        }
        .hero p {
            font-size: 1.3rem;
            color: #b0b0b0;
            max-width: 800px;
            margin: 0 auto 2rem;
        }
        .search-container {
            max-width: 600px;
            margin: 2rem auto;
            padding: 1rem;
        }
        .search-form {
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            border: 2px solid rgba(77, 171, 247, 0.5);
            background: rgba(20, 30, 48, 0.8);
        }
        .search-input {
            flex-grow: 1;
            padding: 1rem 1.5rem;
            background: transparent;
            border: none;
            color: #fff;
            font-size: 1rem;
        }
        .search-input:focus { outline: none; }
        .search-button {
            background: linear-gradient(90deg, #339af0, #228be6);
            color: white;
            border: none;
            padding: 0 2rem;
            cursor: pointer;
            font-weight: bold;
            transition: background 0.3s ease;
        }
        .search-button:hover { background: linear-gradient(90deg, #4dabf7, #339af0); }
        .content-main { padding: 2rem 0; }
        h2 {
            font-size: 2.5rem;
            color: #4dabf7;
            margin: 3rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid rgba(77, 171, 247, 0.3);
            font-family: 'Orbitron', sans-serif;
        }
        h3 {
            font-size: 1.8rem;
            color: #74c0fc;
            margin: 2.5rem 0 1rem;
        }
        h4 {
            font-size: 1.4rem;
            color: #a5d8ff;
            margin: 2rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            hyphens: auto;
        }
        .infographic {
            float: right;
            margin: 1rem 0 1rem 2rem;
            max-width: 400px;
            border: 1px solid rgba(77, 171, 247, 0.3);
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 10px 20px rgba(0,0,0,0.3);
        }
        @media (max-width: 768px) {
            .infographic { float: none; margin: 1rem auto; max-width: 100%; }
        }
        .caption { font-size: 0.9rem; color: #888; text-align: center; margin-top: 0.5rem; }
        .data-box {
            background: linear-gradient(145deg, rgba(25, 50, 90, 0.7), rgba(15, 30, 60, 0.7));
            border: 1px solid rgba(77, 171, 247, 0.2);
            border-radius: 10px;
            padding: 1.5rem;
            margin: 2rem 0;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .data-box:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(77, 171, 247, 0.2);
        }
        .key-fact {
            background: rgba(77, 171, 247, 0.1);
            border-left: 5px solid #4dabf7;
            padding: 1rem;
            margin: 1.5rem 0;
        }
        .user-interaction {
            background: rgba(20, 30, 48, 0.8);
            border-radius: 10px;
            padding: 2rem;
            margin: 3rem 0;
            border-top: 4px solid #ff6b6b;
        }
        .interaction-title { color: #ff6b6b; margin-bottom: 1.5rem; }
        .rating-container {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 2rem;
            flex-wrap: wrap;
        }
        .star-rating { display: flex; gap: 0.5rem; }
        .star { color: #555; font-size: 2rem; cursor: pointer; transition: color 0.2s; }
        .star.active, .star:hover { color: #ffd43b; }
        .rating-form, .comment-form { margin-top: 1.5rem; }
        .form-group { margin-bottom: 1rem; }
        label { display: block; margin-bottom: 0.5rem; color: #ccc; }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem;
            background: rgba(255,255,255,0.05);
            border: 1px solid rgba(77, 171, 247, 0.3);
            border-radius: 5px;
            color: #fff;
            font-size: 1rem;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #4dabf7;
            box-shadow: 0 0 0 3px rgba(77, 171, 247, 0.2);
        }
        button[type="submit"] {
            background: linear-gradient(90deg, #40c057, #2f9e44);
            color: white;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 5px;
            cursor: pointer;
            font-weight: bold;
            transition: background 0.3s ease;
        }
        button[type="submit"]:hover { background: linear-gradient(90deg, #51cf66, #40c057); }
        .site-footer {
            background: rgba(5, 10, 20, 0.95);
            border-top: 1px solid rgba(72, 140, 200, 0.3);
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 { color: #4dabf7; margin-bottom: 1rem; }
        .footer-links a { display: block; margin-bottom: 0.5rem; color: #aaa; }
        .friend-links {
            background: rgba(10, 20, 35, 0.5);
            padding: 1.5rem;
            border-radius: 8px;
            margin: 2rem 0;
        }
        friend-link { display: inline-block; margin-right: 1.5rem; margin-bottom: 0.5rem; }
        .copyright {
            text-align: center;
            color: #666;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.05);
            font-size: 0.9rem;
        }
        .grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; }
        .grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 2rem; }
        @media print {
            .site-header, .search-container, .user-interaction, .site-footer, .hamburger { display: none; }
            body { background: white; color: black; }
            a { color: #0056b3; }
        }