body {
    margin: 0;
    font-family: "Segoe UI", Arial, sans-serif;
    background: #f7f7fb;
    color: #222;
}

.hero {
    text-align: center;
    padding: 60px 20px 40px;
    background: linear-gradient(135deg, #fef3c7, #e0f2fe);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.logo {
    max-width: 260px;
    border-radius: 12px;
    margin-bottom: 20px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
}

h1 {
    font-size: 2.4rem;
    margin: 10px 0;
    letter-spacing: 0.04em;
}

.tagline {
    font-size: 1.1rem;
    color: #374151;
    margin-bottom: 24px;
}

.download-btn {
    display: inline-block;
    padding: 12px 26px;
    border-radius: 999px;
    background: #111827;
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    letter-spacing: 0.04em;
    box-shadow: 0 8px 18px rgba(15, 23, 42, 0.35);
    transition: 0.15s ease;
}

.download-btn:hover {
    background: #020617;
    transform: translateY(-2px);
    box-shadow: 0 12px 26px rgba(15, 23, 42, 0.45);
}

.about {
    max-width: 800px;
    margin: 40px auto;
    padding: 0 20px 40px;
    text-align: center;
}

.about h2 {
    font-size: 1.8rem;
    margin-bottom: 16px;
}

.about p {
    color: #4b5563;
    line-height: 1.6;
}

.footer {
    text-align: center;
    padding: 20px;
    background: #f9fafb;
    border-top: 1px solid rgba(0, 0, 0, 0.04);
    font-size: 0.85rem;
    color: #6b7280;
}