:root {
    --bg: #0A0A0F;
    --bg-card: #121218;
    --bg-card-hover: #1A1A24;
    --cyan: #17A2B8;
    --cyan-dark: #138496;
    --cyan-light: #00D5E5;
    --text: #EAEAEA;
    --text-dim: #8A8A99;
    --border: #2A2A33;
    --radius: 16px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(160deg, #0A0A0F 0%, #12121A 100%);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.6;
}

.container { max-width: 960px; margin: 0 auto; padding: 0 20px; }

.hero {
    text-align: center;
    padding: 70px 20px 50px;
    border-bottom: 1px solid var(--border);
}
.logo { font-size: 3rem; font-weight: 800; letter-spacing: -1px; }
.logo span { color: var(--cyan); }
.tagline { color: var(--text-dim); font-size: 1.2rem; margin-top: 8px; }
.stats { margin-top: 16px; color: var(--cyan-light); font-size: 0.95rem; }

.products {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    padding: 48px 0;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: transform 0.2s, border-color 0.2s, background 0.2s;
}
.card:hover {
    transform: translateY(-4px);
    border-color: var(--cyan);
    background: var(--bg-card-hover);
}

.card-icon { font-size: 2.5rem; margin-bottom: 12px; }
.card h2 { font-size: 1.5rem; display: flex; align-items: center; gap: 10px; }
.badge {
    font-size: 0.7rem;
    background: var(--cyan);
    color: #fff;
    padding: 3px 10px;
    border-radius: 20px;
    font-weight: 600;
    letter-spacing: 0.5px;
}
.desc { color: var(--text-dim); margin: 12px 0 18px; font-size: 0.95rem; }
.version {
    font-size: 0.85rem;
    color: var(--cyan-light);
    margin-bottom: 16px;
    font-weight: 500;
}

.os-tabs { display: flex; gap: 8px; margin-bottom: 16px; }
.os-tab {
    flex: 1;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-dim);
    padding: 8px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s;
}
.os-tab:hover { border-color: var(--cyan); color: var(--text); }
.os-tab.active { background: var(--cyan); color: #fff; border-color: var(--cyan); }

.download-row { display: flex; gap: 10px; }
.btn {
    flex: 1;
    text-align: center;
    padding: 13px 18px;
    border-radius: 12px;
    font-weight: 600;
    text-decoration: none;
    font-size: 0.95rem;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}
.btn-primary {
    background: linear-gradient(135deg, var(--cyan) 0%, var(--cyan-dark) 100%);
    color: #fff;
}
.btn-primary:hover { filter: brightness(1.1); transform: scale(1.02); }
.btn-ghost {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
    flex: 0 0 auto;
    padding: 13px 18px;
}
.btn-ghost:hover { border-color: var(--cyan); }

.platform-note { margin-top: 14px; font-size: 0.8rem; color: var(--text-dim); }

footer {
    text-align: center;
    padding: 40px 20px;
    border-top: 1px solid var(--border);
    color: var(--text-dim);
    font-size: 0.85rem;
}
footer a { color: var(--cyan); text-decoration: none; }

@media (max-width: 640px) {
    .logo { font-size: 2.2rem; }
    .download-row { flex-direction: column; }
    .btn-ghost { flex: 1; }
}