:root {
    --bg: #0a0b0f;
    --bg-2: #12141b;
    --card: rgba(255, 255, 255, 0.05);
    --card-border: rgba(255, 255, 255, 0.09);
    --text: #f2f4f8;
    --muted: #9aa3b2;
    --accent: #3a8dff;
    --accent-2: #0057e7;
    --radius: 16px;
    --maxw: 860px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text);
    background:
        radial-gradient(1200px 600px at 50% -10%, rgba(58, 141, 255, 0.18), transparent 60%),
        linear-gradient(180deg, var(--bg-2), var(--bg));
    background-attachment: fixed;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.wrap {
    width: 100%;
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 20px;
}

/* Header / nav */
.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    backdrop-filter: saturate(140%) blur(12px);
    background: rgba(10, 11, 15, 0.6);
    border-bottom: 1px solid var(--card-border);
}
.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 12px 20px;
    max-width: var(--maxw);
    margin: 0 auto;
}
.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 650;
    color: var(--text);
    text-decoration: none;
    font-size: 1.05rem;
}
.brand img { width: 30px; height: 30px; border-radius: 8px; }
.nav-links { display: flex; gap: 20px; }
.nav-links a {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 550;
}
.nav-links a:hover { color: var(--text); }

/* Hero */
.hero { text-align: center; padding: 72px 0 48px; }
.hero img.app-icon {
    width: 112px; height: 112px;
    border-radius: 25px;
    box-shadow: 0 20px 50px rgba(0, 60, 160, 0.45);
    margin-bottom: 24px;
}
.hero h1 { font-size: clamp(2rem, 6vw, 3.1rem); margin: 0 0 10px; letter-spacing: -0.02em; }
.hero .tagline { font-size: clamp(1.05rem, 3vw, 1.35rem); color: var(--muted); margin: 0 auto 26px; max-width: 34ch; }

.badge {
    display: inline-block;
    padding: 9px 18px;
    border-radius: 999px;
    border: 1px solid var(--card-border);
    background: var(--card);
    color: var(--text);
    font-weight: 600;
    font-size: 0.92rem;
}

/* Sections */
section { padding: 34px 0; }
h2 { font-size: clamp(1.4rem, 4vw, 1.9rem); letter-spacing: -0.01em; margin: 0 0 18px; }
h3 { font-size: 1.1rem; margin: 26px 0 6px; }
p { color: var(--text); }
.muted { color: var(--muted); }
a { color: var(--accent); }

/* Feature grid */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
}
.card {
    background: var(--card);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    padding: 22px;
}
.card .ic { font-size: 1.5rem; margin-bottom: 8px; }
.card h3 { margin: 0 0 6px; font-size: 1.08rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.96rem; }

/* Privacy highlight banner */
.privacy-banner {
    background: linear-gradient(135deg, rgba(58, 141, 255, 0.16), rgba(0, 87, 231, 0.10));
    border: 1px solid rgba(58, 141, 255, 0.3);
    border-radius: var(--radius);
    padding: 26px;
    text-align: center;
}
.privacy-banner h2 { margin-top: 0; }
.privacy-banner p { color: var(--text); margin: 0 auto; max-width: 52ch; }

/* Legal / doc pages */
.doc { padding-top: 40px; }
.doc h1 { font-size: clamp(1.7rem, 5vw, 2.4rem); margin: 0 0 4px; }
.doc .effective { color: var(--muted); font-size: 0.9rem; margin: 0 0 28px; }
.doc h2 { margin-top: 34px; font-size: 1.25rem; }
.doc ul { padding-left: 20px; }
.doc li { margin: 6px 0; }
.doc .lead {
    background: var(--card);
    border: 1px solid var(--card-border);
    border-left: 3px solid var(--accent);
    border-radius: 12px;
    padding: 16px 18px;
}

/* FAQ */
.faq details {
    background: var(--card);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 4px 18px;
    margin: 10px 0;
}
.faq summary {
    cursor: pointer;
    font-weight: 600;
    padding: 14px 0;
    list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; float: right; color: var(--muted); font-weight: 400; }
.faq details[open] summary::after { content: "\2013"; }
.faq details p { margin: 0 0 14px; color: var(--muted); }

/* Buttons */
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 8px; }
.btn {
    display: inline-block;
    padding: 12px 22px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    border: 1px solid var(--card-border);
}
.btn.primary { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; border-color: transparent; }
.btn.ghost { background: var(--card); color: var(--text); }

/* Footer */
.site-footer {
    border-top: 1px solid var(--card-border);
    margin-top: 40px;
    padding: 28px 0 44px;
    text-align: center;
    color: var(--muted);
    font-size: 0.9rem;
}
.site-footer a { color: var(--muted); text-decoration: none; margin: 0 10px; }
.site-footer a:hover { color: var(--text); }
.site-footer .copy { margin-top: 10px; }

@media (max-width: 520px) {
    .nav-links { gap: 14px; }
    .hero { padding: 48px 0 32px; }
}