* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.7;
            color: #e0e0e0;
            background: #0a0a12;
            background-image: radial-gradient(circle at 15% 50%, rgba(30, 60, 114, 0.15) 0%, transparent 55%);
        }
        img { max-width: 100%; height: auto; display: block; }
        h1, h2, h3, h4 { font-family: 'Trebuchet MS', 'Arial Black', sans-serif; color: #4da6ff; margin-bottom: 1rem; line-height: 1.3; }
        h1 { font-size: clamp(2.5rem, 5vw, 4rem); text-align: center; margin-top: 1.5rem; color: #00ccff; text-shadow: 0 0 15px rgba(0, 204, 255, 0.5); }
        h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); border-left: 5px solid #ff9900; padding-left: 15px; margin-top: 2.5rem; }
        h3 { font-size: clamp(1.4rem, 3vw, 1.9rem); color: #66ffcc; margin-top: 2rem; }
        h4 { font-size: 1.2rem; color: #ffcc66; margin-top: 1.5rem; }
        p { margin-bottom: 1.5rem; text-align: justify; }
        .lead { font-size: 1.2rem; font-weight: 300; color: #b3d9ff; }
        .highlight { background: linear-gradient(90deg, transparent, rgba(255, 153, 0, 0.2), transparent); padding: 0.3rem 0.8rem; border-radius: 4px; }
        .emoji { font-size: 1.2em; margin-right: 5px; }
        .last-updated { font-style: italic; color: #aaa; text-align: right; margin-bottom: 2rem; padding-top: 1rem; border-top: 1px dashed #444; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        main .container { padding-top: 2rem; }
        .site-header {
            background: rgba(10, 15, 30, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 2px solid #1a3a5f;
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 1rem 0;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo a {
            font-family: 'Orbitron', sans-serif;
            font-size: 2rem;
            font-weight: 900;
            color: #00ccff;
            text-decoration: none;
            background: linear-gradient(45deg, #00ccff, #0066ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0 0 10px rgba(0, 102, 255, 0.3);
        }
        .my-logo a:hover { text-shadow: 0 0 20px rgba(0, 204, 255, 0.7); }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #ccd9ff;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 5px;
            transition: all 0.3s ease;
        }
        .main-nav a:hover, .main-nav a:focus {
            background: #1a3a5f;
            color: #ffffff;
            box-shadow: 0 0 10px #4da6ff;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #00ccff;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 1rem 0;
            color: #8899cc;
            font-size: 0.9rem;
        }
        .breadcrumb a { color: #4da6ff; text-decoration: none; }
        .breadcrumb a:hover { text-decoration: underline; }
        .article-content {
            background: rgba(15, 20, 35, 0.7);
            border-radius: 15px;
            padding: 2.5rem;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
            margin-bottom: 3rem;
        }
        .feature-img {
            width: 80%;
            margin: 2rem auto;
            border: 3px solid #4da6ff;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 20px rgba(0, 100, 255, 0.4);
        }
        .feature-img img { width: 100%; transition: transform 0.5s ease; }
        .feature-img img:hover { transform: scale(1.03); }
        .interactive-module {
            background: rgba(25, 40, 70, 0.6);
            border-radius: 10px;
            padding: 2rem;
            margin: 3rem 0;
            border-left: 5px solid #ff9900;
        }
        .module-title { color: #ffcc00; margin-bottom: 1.5rem; display: flex; align-items: center; gap: 10px; }
        form { display: grid; gap: 1.2rem; }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem 1rem;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid #4da6ff;
            border-radius: 8px;
            color: white;
            font-size: 1rem;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #ff9900;
            box-shadow: 0 0 10px rgba(255, 153, 0, 0.5);
        }
        button {
            padding: 0.9rem 2rem;
            background: linear-gradient(45deg, #0066ff, #00ccff);
            color: white;
            border: none;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
            justify-self: start;
        }
        button:hover {
            background: linear-gradient(45deg, #ff9900, #ffcc00);
            box-shadow: 0 0 15px rgba(255, 153, 0, 0.7);
            transform: translateY(-2px);
        }
        .star-rating { display: flex; gap: 0.5rem; font-size: 1.8rem; color: #ffcc00; cursor: pointer; }
        .star-rating span:hover { color: #ff9900; }
        .site-footer {
            background: #050510;
            padding: 3rem 0 1.5rem;
            border-top: 2px solid #1a3a5f;
            margin-top: 4rem;
        }
        friend-link {
            display: block;
            background: rgba(30, 60, 120, 0.3);
            padding: 1.5rem;
            border-radius: 10px;
            margin-bottom: 2rem;
        }
        friend-link h3 { color: #66ffcc; margin-bottom: 1rem; }
        .friend-links-list {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
        }
        .friend-links-list a {
            color: #4da6ff;
            text-decoration: none;
            padding: 0.5rem 1rem;
            border: 1px solid #4da6ff;
            border-radius: 5px;
            transition: all 0.3s ease;
        }
        .friend-links-list a:hover {
            background: #4da6ff;
            color: #0a0a12;
            box-shadow: 0 0 10px #4da6ff;
        }
        .copyright {
            text-align: center;
            color: #8899aa;
            font-size: 0.9rem;
            padding-top: 2rem;
            border-top: 1px solid #333;
        }
        @media (max-width: 768px) {
            .header-content { flex-wrap: wrap; }
            .main-nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background: rgba(10, 15, 30, 0.98);
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1rem;
                border-top: 1px solid #1a3a5f;
            }
            .main-nav.active ul { display: flex; }
            .hamburger { display: block; }
            .article-content { padding: 1.5rem; }
            .feature-img { width: 100%; }
            .interactive-module { padding: 1.5rem; }
            .friend-links-list { flex-direction: column; }
        }
        .content-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 2rem 0;
        }
        .flex-center { display: flex; align-items: center; justify-content: center; }