* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background: linear-gradient(135deg, #0f1c2e 0%, #1a2b3e 100%);
            color: #e0e0e0;
            line-height: 1.7;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: #4dabf7;
            text-decoration: none;
            transition: color 0.3s ease, transform 0.2s ease;
        }
        a:hover {
            color: #74c0fc;
            transform: translateY(-2px);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 10px;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: rgba(15, 28, 46, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 2px solid #2a3f5f;
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 15px 0;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2rem;
            font-weight: 800;
            background: linear-gradient(90deg, #ff6b6b, #4ecdc4, #45b7d1);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            display: flex;
            align-items: center;
        }
        .logo i {
            margin-right: 10px;
            color: #4ecdc4;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        nav a {
            font-weight: 600;
            padding: 8px 12px;
            border-radius: 5px;
        }
        nav a:hover {
            background: rgba(74, 144, 226, 0.2);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: #e0e0e0;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 15px 0;
            font-size: 0.9rem;
            color: #a0aec0;
        }
        .breadcrumb a {
            color: #a0aec0;
        }
        .breadcrumb a:hover {
            color: #4dabf7;
        }
        main {
            flex: 1;
            padding: 30px 0;
        }
        article {
            background: rgba(26, 43, 62, 0.7);
            border-radius: 15px;
            padding: 30px;
            margin-bottom: 30px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
            border: 1px solid #2a3f5f;
        }
        h1, h2, h3 {
            color: #ffffff;
            margin-bottom: 20px;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
            background: linear-gradient(90deg, #ffa726, #ff6b6b);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-align: center;
            margin-bottom: 30px;
        }
        h2 {
            font-size: 2rem;
            color: #4ecdc4;
            border-left: 5px solid #4ecdc4;
            padding-left: 15px;
            margin-top: 40px;
        }
        h3 {
            font-size: 1.5rem;
            color: #ffa726;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .highlight {
            background: rgba(255, 107, 107, 0.1);
            border-left: 4px solid #ff6b6b;
            padding: 15px;
            margin: 20px 0;
            border-radius: 0 8px 8px 0;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .tier-table {
            width: 100%;
            border-collapse: collapse;
            margin: 30px 0;
            background: rgba(15, 28, 46, 0.8);
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
        }
        .tier-table th, .tier-table td {
            padding: 15px;
            text-align: left;
            border-bottom: 1px solid #2a3f5f;
        }
        .tier-table th {
            background: #2a3f5f;
            color: #ffa726;
            font-size: 1.2rem;
        }
        .tier-table tr:hover {
            background: rgba(74, 144, 226, 0.1);
        }
        .tier-s {
            color: #ff6b6b;
            font-weight: bold;
        }
        .tier-a {
            color: #4ecdc4;
            font-weight: bold;
        }
        .tier-b {
            color: #45b7d1;
            font-weight: bold;
        }
        .interactive-section {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
            margin: 40px 0;
        }
        .card {
            background: rgba(15, 28, 46, 0.8);
            border-radius: 10px;
            padding: 25px;
            border: 1px solid #2a3f5f;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
        }
        .card h3 {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 15px;
            margin-top: 15px;
        }
        input, textarea, select {
            padding: 12px;
            border-radius: 8px;
            border: 1px solid #2a3f5f;
            background: rgba(26, 43, 62, 0.9);
            color: #e0e0e0;
            font-size: 1rem;
        }
        button {
            padding: 12px 25px;
            background: linear-gradient(90deg, #4ecdc4, #45b7d1);
            color: #0f1c2e;
            border: none;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        button:hover {
            background: linear-gradient(90deg, #45b7d1, #4ecdc4);
            transform: scale(1.05);
        }
        .stars {
            display: flex;
            gap: 5px;
            font-size: 1.5rem;
            color: #ffd700;
            margin: 10px 0;
        }
        .stars i {
            cursor: pointer;
            transition: color 0.2s;
        }
        .feature-img {
            margin: 30px auto;
            max-width: 800px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
        }
        .long-tail-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 20px;
            padding: 30px 0;
            border-top: 1px solid #2a3f5f;
            border-bottom: 1px solid #2a3f5f;
            margin-bottom: 30px;
        }
        .web-link {
            background: rgba(26, 43, 62, 0.7);
            padding: 10px 20px;
            border-radius: 50px;
            border: 1px solid #2a3f5f;
            transition: all 0.3s ease;
        }
        .web-link:hover {
            background: rgba(74, 144, 226, 0.2);
            border-color: #4dabf7;
        }
        footer {
            background: rgba(15, 28, 46, 0.95);
            text-align: center;
            padding: 30px 0;
            border-top: 2px solid #2a3f5f;
        }
        .footer-content {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 20px;
        }
        .copyright {
            color: #a0aec0;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-content {
                flex-wrap: wrap;
            }
            nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background: rgba(15, 28, 46, 0.98);
                position: absolute;
                top: 100%;
                left: 0;
                padding: 20px;
                border-top: 1px solid #2a3f5f;
            }
            nav.active ul {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .interactive-section {
                grid-template-columns: 1fr;
            }
            .long-tail-links {
                gap: 15px;
            }
            .web-link {
                padding: 8px 15px;
                font-size: 0.9rem;
            }
        }