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

body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, sans-serif;
    background: linear-gradient(180deg, #f5f5f7 0%, #ffffff 100%);
    color: #1d1d1f;
    line-height: 1.5;
    min-height: 100vh;
}

.container {
    max-width: 980px;
    margin: 0 auto;
    padding: 80px 20px;
}

.hero {
    text-align: center;
    margin-bottom: 120px;
}

.app-icon {
    width: 120px;
    height: 120px;
    border-radius: 24px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    margin-bottom: 24px;
}

h1 {
    font-size: 48px;
    font-weight: 700;
    letter-spacing: -0.015em;
    margin-bottom: 16px;
}

.tagline {
    font-size: 21px;
    color: #86868b;
    font-weight: 400;
    margin-bottom: 32px;
}

.buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    padding: 14px 28px;
    border-radius: 24px;
    font-size: 17px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
}

.btn-primary {
    background: #0071e3;
    color: white;
}

.btn-primary:hover {
    background: #0077ed;
    transform: scale(1.02);
}

.btn-secondary {
    background: #e3e3e8;
    color: #1d1d1f;
}

.btn-secondary:hover {
    background: #dcdcdd;
}

.screenshots {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.screenshot-item {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease;
}

.screenshot-item:hover {
    transform: translateY(-4px);
}

.screenshot-item img {
    width: 100%;
    height: auto;
    display: block;
}

@media (max-width: 768px) {
    .container {
        padding: 60px 16px;
    }

    h1 {
        font-size: 36px;
    }

    .tagline {
        font-size: 18px;
    }

    .app-icon {
        width: 100px;
        height: 100px;
    }

    .screenshots {
        grid-template-columns: 1fr;
    }
}