* { 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, #0c1a2d 0%, #1a1a2e 50%, #16213e 100%);
            background-attachment: fixed;
            min-height: 100vh;
        }
        a { color: #4dabf7; text-decoration: none; transition: color 0.3s, transform 0.2s; }
        a:hover { color: #74c0fc; transform: translateY(-2px); }
        img { max-width: 100%; height: auto; display: block; border-radius: 8px; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            background: linear-gradient(90deg, #ff6b6b, #ff8e53);
            color: white;
            border: none;
            border-radius: 50px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(255, 107, 107, 0.4);
        }
        .btn:hover {
            background: linear-gradient(90deg, #ff8e53, #ff6b6b);
            transform: scale(1.05);
            box-shadow: 0 6px 20px rgba(255, 107, 107, 0.6);
        }
        .section-padding { padding: 60px 0; }
        .text-center { text-align: center; }
        .text-highlight { color: #ffd43b; font-weight: bold; }
        .site-header {
            background: rgba(10, 25, 47, 0.95);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 2px solid #00b4d8;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.5);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }
        .my-logo {
            font-family: 'Arial Black', sans-serif;
            font-size: 2rem;
            background: linear-gradient(45deg, #00b4d8, #90e0ef);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 2px 10px rgba(0, 180, 216, 0.3);
        }
        .my-logo:hover { transform: scale(1.05); }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #90e0ef;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .main-nav a {
            color: #caf0f8;
            font-weight: 600;
            padding: 8px 12px;
            border-radius: 5px;
        }
        .main-nav a:hover {
            background: rgba(0, 180, 216, 0.2);
            color: #ffffff;
        }
        .breadcrumb {
            padding: 15px 20px;
            background: rgba(20, 40, 70, 0.7);
            font-size: 0.9rem;
        }
        .breadcrumb a { color: #90e0ef; }
        .breadcrumb span { color: #adb5bd; }
        .hero {
            padding: 80px 20px;
            text-align: center;
            background: radial-gradient(circle at center, rgba(0, 119, 182, 0.15) 0%, transparent 70%);
        }
        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            background: linear-gradient(to right, #00b4d8, #ffd166);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 30px;
            color: #bde0fe;
        }
        .search-box {
            max-width: 600px;
            margin: 40px auto;
            padding: 20px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 15px;
            border: 1px solid #00b4d8;
        }
        .search-box form {
            display: flex;
            gap: 10px;
        }
        .search-box input {
            flex-grow: 1;
            padding: 15px;
            border: 2px solid #495057;
            border-radius: 50px;
            background: #1e2a47;
            color: #f8f9fa;
            font-size: 1rem;
        }
        .search-box input:focus {
            outline: none;
            border-color: #00b4d8;
        }
        .content-pyramid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 20px;
        }
        @media (max-width: 992px) {
            .content-pyramid { grid-template-columns: 1fr; }
        }
        article h2 {
            font-size: 2.5rem;
            color: #4cc9f0;
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 3px solid #4361ee;
        }
        article h3 {
            font-size: 1.8rem;
            color: #ffd166;
            margin: 30px 0 15px;
        }
        article h4 {
            font-size: 1.4rem;
            color: #06d6a0;
            margin: 25px 0 10px;
        }
        article p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            color: #ced4da;
            text-align: justify;
        }
        article emoji { font-size: 1.2em; margin-right: 5px; }
        .feature-img {
            margin: 30px auto;
            border: 3px solid #00b4d8;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
        }
        .info-box {
            background: linear-gradient(145deg, rgba(32, 58, 96, 0.8), rgba(19, 35, 58, 0.9));
            border-left: 5px solid #ff6b6b;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 10px 10px 0;
        }
        .sidebar {
            background: rgba(25, 45, 75, 0.7);
            padding: 25px;
            border-radius: 15px;
            border: 1px solid #495057;
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar h3 { color: #ffd166; margin-bottom: 20px; }
        .sidebar ul { list-style: none; }
        .sidebar li { margin-bottom: 15px; padding-bottom: 15px; border-bottom: 1px dashed #495057; }
        .update-time {
            background: #0c1a2d;
            padding: 15px;
            border-radius: 10px;
            margin-top: 20px;
            text-align: center;
            color: #06d6a0;
            font-weight: bold;
        }
        .interactive-section {
            background: rgba(30, 42, 71, 0.8);
            padding: 40px;
            border-radius: 15px;
            margin-top: 50px;
            border: 1px solid #00b4d8;
        }
        .rating-box {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-bottom: 30px;
            flex-wrap: wrap;
        }
        .stars { display: flex; gap: 5px; }
        .stars i { color: #ffd43b; font-size: 1.8rem; cursor: pointer; transition: color 0.2s; }
        .stars i:hover { color: #ffc107; }
        .interactive-section form {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .interactive-section input,
        .interactive-section textarea {
            padding: 15px;
            border-radius: 10px;
            border: 1px solid #495057;
            background: #1e2a47;
            color: #f8f9fa;
            font-size: 1rem;
        }
        .interactive-section textarea { min-height: 150px; resize: vertical; }
        .site-footer {
            background: #0a192f;
            padding: 50px 20px 20px;
            margin-top: 60px;
            border-top: 3px solid #00b4d8;
        }
        .footer-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
            margin-bottom: 40px;
        }
        friend-link {
            display: block;
            padding: 15px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 8px;
            margin-bottom: 10px;
            transition: background 0.3s;
        }
        friend-link:hover { background: rgba(0, 180, 216, 0.2); }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #495057;
            color: #adb5bd;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .hero h1 { font-size: 2.5rem; }
            .header-container { flex-wrap: wrap; }
            .nav-toggle { display: block; }
            .main-nav {
                display: none;
                width: 100%;
                margin-top: 20px;
            }
            .main-nav.active { display: block; }
            .main-nav ul {
                flex-direction: column;
                gap: 10px;
            }
            .content-pyramid { padding: 10px; }
            article h2 { font-size: 2rem; }
            .interactive-section { padding: 25px; }
        }