* { 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: linear-gradient(135deg, #0a0f1c 0%, #1a2332 100%);
            background-attachment: fixed;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a { color: #4dabf7; text-decoration: none; transition: color 0.3s, transform 0.2s; }
        a:hover { color: #74c0fc; transform: translateY(-1px); }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: rgba(10, 15, 28, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 2px solid #2a3d5f;
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 15px 0;
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Arial Black', Impact, sans-serif;
            font-size: 2.2rem;
            background: linear-gradient(to right, #00a8ff, #00ffcc);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 0 15px rgba(0, 168, 255, 0.3);
            letter-spacing: 1px;
        }
        .my-logo:hover { transform: scale(1.03); }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        .main-nav a {
            color: #b0d0ff;
            font-weight: 600;
            padding: 8px 5px;
            border-bottom: 2px solid transparent;
        }
        .main-nav a:hover, .main-nav a.active {
            color: #00ffcc;
            border-bottom-color: #00ffcc;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            color: #00a8ff;
            cursor: pointer;
            background: none;
            border: none;
        }
        .breadcrumb {
            padding: 15px 0;
            background: rgba(26, 35, 50, 0.7);
            font-size: 0.9rem;
            margin-bottom: 30px;
        }
        .breadcrumb a { color: #8ab4f8; }
        .breadcrumb span { color: #aaa; }
        .content-main {
            flex: 1;
            padding: 30px 0;
        }
        .article-body {
            background: rgba(20, 27, 40, 0.8);
            border-radius: 15px;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
            border: 1px solid #2a3d5f;
        }
        h1, h2, h3, h4 {
            color: #ffffff;
            margin-top: 1.8em;
            margin-bottom: 0.7em;
            line-height: 1.3;
        }
        h1 {
            font-size: 3.2rem;
            text-align: center;
            background: linear-gradient(90deg, #00a8ff, #00ffcc);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-top: 0;
            padding-bottom: 15px;
            border-bottom: 3px solid #2a3d5f;
        }
        h2 { font-size: 2.4rem; color: #4dabf7; border-left: 5px solid #00ffcc; padding-left: 15px; }
        h3 { font-size: 1.8rem; color: #74c0fc; }
        h4 { font-size: 1.4rem; color: #a5d8ff; }
        p { margin-bottom: 1.5em; text-align: justify; }
        .lead {
            font-size: 1.3rem;
            color: #b0d0ff;
            font-weight: 500;
            text-align: center;
            margin: 25px auto;
            max-width: 900px;
        }
        .highlight {
            background: linear-gradient(90deg, rgba(0, 168, 255, 0.1), rgba(0, 255, 204, 0.1));
            border-left: 4px solid #00ffcc;
            padding: 20px;
            border-radius: 0 10px 10px 0;
            margin: 25px 0;
        }
        .emoji { font-size: 1.2em; margin-right: 5px; }
        strong { color: #ffffff; font-weight: 700; }
        .feature-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
            margin: 40px 0;
        }
        .feature-card {
            background: rgba(42, 61, 95, 0.6);
            border-radius: 10px;
            padding: 25px;
            border: 1px solid #3a506b;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .feature-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 25px rgba(0, 168, 255, 0.2);
            border-color: #00a8ff;
        }
        .feature-card h3 { margin-top: 0; }
        form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        input, textarea, select {
            padding: 14px;
            border-radius: 8px;
            border: 1px solid #3a506b;
            background: rgba(15, 23, 36, 0.8);
            color: #e0e0e0;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #00a8ff;
            box-shadow: 0 0 10px rgba(0, 168, 255, 0.5);
        }
        button, .btn {
            background: linear-gradient(90deg, #0066cc, #00a8ff);
            color: white;
            border: none;
            padding: 14px 25px;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s;
            text-align: center;
            display: inline-block;
        }
        button:hover, .btn:hover {
            background: linear-gradient(90deg, #00a8ff, #00ffcc);
            box-shadow: 0 5px 15px rgba(0, 168, 255, 0.4);
            transform: scale(1.03);
        }
        .stars {
            display: flex;
            gap: 8px;
            margin: 10px 0;
        }
        .star {
            font-size: 1.8rem;
            color: #555;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star.active, .star:hover { color: #ffcc00; }
        .article-image {
            margin: 35px auto;
            max-width: 900px;
            border-radius: 12px;
            overflow: hidden;
            border: 3px solid #3a506b;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.7);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #aaa;
            padding: 10px;
            background: rgba(26, 35, 50, 0.7);
        }
        .site-footer {
            background: rgba(10, 15, 28, 0.98);
            border-top: 2px solid #2a3d5f;
            margin-top: 60px;
            padding: 40px 0 20px;
        }
        .footer-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 30px;
            margin-bottom: 30px;
        }
        friend-link {
            display: inline-block;
            padding: 10px 20px;
            background: rgba(42, 61, 95, 0.5);
            border-radius: 6px;
            border: 1px solid #3a506b;
        }
        .copyright {
            text-align: center;
            color: #8ab4f8;
            font-size: 0.9rem;
            padding-top: 20px;
            border-top: 1px solid #2a3d5f;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.8rem; }
            h2 { font-size: 2.1rem; }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(10, 15, 28, 0.98);
                padding: 20px;
                border-top: 2px solid #2a3d5f;
                border-bottom: 2px solid #2a3d5f;
            }
            .main-nav.active ul { display: flex; }
            .header-inner { flex-wrap: wrap; }
            .article-body { padding: 25px; }
            .feature-box { grid-template-columns: 1fr; }
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.9rem; }
            .lead { font-size: 1.1rem; }
        }
        @media (max-width: 480px) {
            .container { padding: 0 15px; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.7rem; }
            .article-body { padding: 20px; }
        }