* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #1a1a2e;
    color: #d4d4d4;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    line-height: 1.6;
}

.container {
    max-width: 1000px;
    padding: 40px 30px;
    background: #1e1e2f;
    border-radius: 12px;
    border: 1px solid #2a2a3e;
    box-shadow: 0 8px 32px rgba(0,0,0,0.6);
    text-align: center;
}

header h1 {
    font-size: 3.2rem;
    font-weight: 600;
    color: #ffffff;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

header h1 span {
    background: linear-gradient(135deg, #4a90d9, #6a5acd);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 1.1rem;
    color: #a0a0b8;
    margin-bottom: 40px;
}

.features {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
}

.feature-card {
    background: #2a2a3e;
    border-radius: 10px;
    padding: 24px 20px;
    flex: 1 1 180px;
    min-width: 160px;
    border: 1px solid #3a3a4e;
    transition: all 0.2s ease;
}

.feature-card:hover {
    border-color: #4a90d9;
    background: #2f2f45;
}

.feature-card h3 {
    font-size: 1.2rem;
    color: #ffffff;
    margin-bottom: 10px;
}

.feature-card p {
    color: #b0b0c8;
    font-size: 0.9rem;
}

.download-section {
    margin: 30px 0 20px;
}

.btn-primary {
    display: inline-block;
    background: #4a90d9;
    padding: 14px 44px;
    border-radius: 8px;
    font-size: 1.2rem;
    font-weight: 600;
    color: #ffffff;
    text-decoration: none;
    border: 1px solid #4a90d9;
    transition: all 0.2s ease;
    cursor: pointer;
}

.btn-primary:hover {
    background: #5a9ee9;
    border-color: #5a9ee9;
    transform: scale(1.02);
}

.version {
    display: block;
    margin-top: 14px;
    color: #8888a0;
    font-size: 0.85rem;
}

footer {
    margin-top: 50px;
    padding-top: 20px;
    border-top: 1px solid #2a2a3e;
    color: #6a6a80;
    font-size: 0.85rem;
}

footer a {
    color: #4a90d9;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

@media (max-width: 600px) {
    header h1 {
        font-size: 2rem;
    }
    .btn-primary {
        padding: 12px 28px;
        font-size: 1rem;
    }
}