* { 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: #333;
            background: linear-gradient(135deg, #0a2e38 0%, #1a1a2e 100%);
            color: #f0f0f0;
            min-height: 100vh;
        }
        a { color: #4db5ff; text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #ffcc00; text-decoration: underline; }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        .site-header {
            background: rgba(10, 25, 47, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 2px solid #00d4ff;
            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: 'Georgia', serif;
            font-size: 2.2rem;
            font-weight: bold;
            background: linear-gradient(90deg, #00d4ff, #ffcc00);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
        }
        .my-logo:hover { text-decoration: none; opacity: 0.9; }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        .nav-desktop a {
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 5px;
        }
        .nav-desktop a:hover {
            background: rgba(77, 181, 255, 0.15);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background: rgba(10, 25, 47, 0.98);
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            border-top: 1px solid #00d4ff;
        }
        .nav-mobile.active { display: flex; }
        .nav-mobile a {
            padding: 1rem;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            color: #aaa;
        }
        .breadcrumb a { color: #4db5ff; }
        .breadcrumb span { color: #ffcc00; }
        main { padding: 2rem 0; background: rgba(255,255,255,0.03); border-radius: 10px; margin: 1rem 0; }
        .article-header { text-align: center; margin-bottom: 3rem; padding: 2rem; border-bottom: 2px dashed #00d4ff; }
        h1 {
            font-size: clamp(2.2rem, 5vw, 3.5rem);
            margin-bottom: 1rem;
            color: #00d4ff;
            text-shadow: 0 2px 10px rgba(0, 212, 255, 0.5);
        }
        .lead {
            font-size: 1.3rem;
            color: #ccc;
            max-width: 800px;
            margin: 0 auto;
        }
        h2 { font-size: 2rem; color: #ffcc00; margin: 2.5rem 0 1.5rem; padding-bottom: 0.5rem; border-bottom: 2px solid rgba(255, 204, 0, 0.3); }
        h3 { font-size: 1.6rem; color: #4db5ff; margin: 2rem 0 1rem; }
        h4 { font-size: 1.3rem; color: #a3d9ff; margin: 1.5rem 0 0.8rem; }
        p { margin-bottom: 1.2rem; text-align: justify; }
        .content-section {
            padding: 1.5rem;
            margin-bottom: 2rem;
            background: rgba(30, 40, 60, 0.6);
            border-radius: 10px;
            border-left: 5px solid #00d4ff;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
            transition: transform 0.3s ease;
        }
        .content-section:hover { transform: translateY(-5px); }
        .highlight { background: rgba(255, 204, 0, 0.1); padding: 1rem; border-radius: 8px; border-left: 4px solid #ffcc00; margin: 1.5rem 0; }
        .bold { font-weight: bold; color: #fff; }
        .emoji { font-size: 1.2em; margin-right: 5px; }
        .article-img {
            margin: 2rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0,0,0,0.5);
            border: 3px solid #00d4ff;
            max-width: 800px;
        }
        .caption { text-align: center; font-style: italic; color: #aaa; margin-top: 0.5rem; font-size: 0.9rem; }
        .interactive-module {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }
        .module {
            background: rgba(20, 30, 48, 0.8);
            padding: 2rem;
            border-radius: 10px;
            border: 1px solid #4db5ff;
        }
        .module h3 { text-align: center; margin-top: 0; }
        form { display: flex; flex-direction: column; gap: 1rem; }
        input, textarea, select {
            padding: 0.8rem;
            border-radius: 5px;
            border: 1px solid #555;
            background: rgba(255,255,255,0.1);
            color: #fff;
            font-size: 1rem;
        }
        button, .btn {
            background: linear-gradient(90deg, #00d4ff, #0099cc);
            color: white;
            border: none;
            padding: 0.9rem 1.5rem;
            border-radius: 5px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        button:hover, .btn:hover {
            background: linear-gradient(90deg, #ffcc00, #ff9900);
            transform: scale(1.03);
            box-shadow: 0 5px 15px rgba(255, 204, 0, 0.4);
        }
        .star-rating { display: flex; justify-content: center; gap: 0.5rem; font-size: 2rem; cursor: pointer; }
        .star { color: #555; transition: color 0.2s; }
        .star:hover, .star.active { color: #ffcc00; }
        .site-footer {
            background: rgba(5, 15, 30, 0.98);
            padding: 3rem 0 1.5rem;
            border-top: 2px solid #00d4ff;
            margin-top: 3rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        friend-link {
            display: inline-block;
            background: rgba(77, 181, 255, 0.1);
            padding: 0.8rem 1.2rem;
            margin: 0.5rem;
            border-radius: 5px;
            border: 1px solid #4db5ff;
            transition: all 0.3s;
        }
        friend-link:hover { background: rgba(77, 181, 255, 0.3); transform: translateY(-3px); }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .nav-desktop { display: none; }
            .hamburger { display: block; }
            .header-container { flex-wrap: wrap; }
            .interactive-module { grid-template-columns: 1fr; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            .content-section { padding: 1rem; }
            .article-header { padding: 1rem; }
        }