/* Nexus Family — shared styles
   Self-contained: system fonts only, no external requests (privacy-first). */

:root {
  color-scheme: light dark;
  --ink: #1a1a2e;
  --ink-soft: #4a4a63;
  --bg: #fbfbfd;
  --surface: #ffffff;
  --line: rgba(70, 80, 160, .14);
  --accent: #3b5bdb;
  --accent-2: #7048e8;
  --accent-soft: rgba(112, 72, 232, .09);
  --accent-ring: rgba(112, 72, 232, .22);
  --radius: 16px;
  --shadow: 0 12px 40px rgba(40, 45, 90, .10);
  --maxw: 1040px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e7e7ef;
    --ink-soft: #a6a6bd;
    --bg: #0e0e18;
    --surface: #17172a;
    --line: rgba(140, 150, 230, .16);
    --accent: #8ab4ff;
    --accent-2: #b197fc;
    --accent-soft: rgba(140, 130, 255, .10);
    --accent-ring: rgba(140, 130, 255, .28);
    --shadow: 0 14px 44px rgba(0, 0, 0, .45);
  }
}

* { box-sizing: border-box; }

body {
  font: 17px/1.65 var(--font);
  color: var(--ink);
  background: var(--bg);
  margin: 0;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }
.narrow { max-width: 720px; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 10;
  backdrop-filter: saturate(1.4) blur(12px);
  -webkit-backdrop-filter: saturate(1.4) blur(12px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 62px;
}
.brand { display: flex; align-items: center; gap: 9px; font-weight: 600; letter-spacing: .04em; color: var(--ink); }
.brand:hover { text-decoration: none; }
.brand .star { color: var(--accent-2); font-size: 20px; }
.brand b { letter-spacing: .16em; font-size: .95rem; }
.nav a { color: var(--ink-soft); margin-left: 22px; font-size: .95rem; }
.nav a:hover { color: var(--ink); text-decoration: none; }

/* ---------- hero ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: 84px 0 68px;
  background: radial-gradient(1200px 460px at 50% -8%, var(--accent-soft), transparent 70%);
}
.hero .wrap { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.badge {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: .8rem; font-weight: 600; letter-spacing: .02em;
  color: var(--accent-2);
  background: var(--accent-soft); border: 1px solid var(--accent-ring);
  padding: 5px 13px; border-radius: 999px; margin-bottom: 20px;
}
.hero h1 { font-size: clamp(2.1rem, 5vw, 3.1rem); line-height: 1.08; letter-spacing: -.02em; margin: 0 0 16px; }
.hero h1 .grad {
  background: linear-gradient(100deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.lead { font-size: 1.18rem; color: var(--ink-soft); max-width: 34rem; margin: 0 0 28px; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 600; font-size: .98rem;
  padding: 12px 20px; border-radius: 12px; border: 1px solid transparent;
  transition: transform .12s ease, box-shadow .12s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: linear-gradient(100deg, var(--accent), var(--accent-2)); color: #fff; box-shadow: 0 8px 24px var(--accent-ring); }
.btn-ghost { color: var(--ink); border-color: var(--line); background: var(--surface); }

/* phone mockup */
.phone {
  justify-self: center;
  width: 248px; aspect-ratio: 9 / 19;
  border-radius: 34px; padding: 12px;
  background: linear-gradient(160deg, #2a2a44, #12121f);
  box-shadow: var(--shadow), inset 0 0 0 1px rgba(255,255,255,.06);
}
.phone-screen {
  height: 100%; border-radius: 24px; overflow: hidden;
  background: radial-gradient(circle at 50% 12%, #f3f4ff, #fbfbfd);
  padding: 20px 16px; display: flex; flex-direction: column; gap: 11px;
}
@media (prefers-color-scheme: dark) { .phone-screen { background: radial-gradient(circle at 50% 12%, #1c1c34, #101020); } }
.phone-screen .p-star { color: var(--accent-2); font-size: 20px; text-align: center; }
.phone-screen .p-title { text-align: center; font-weight: 700; letter-spacing: .12em; font-size: .74rem; color: var(--ink); margin-bottom: 4px; }
.p-card { background: var(--accent-soft); border: 1px solid var(--accent-ring); border-radius: 12px; padding: 10px 12px; }
.p-card .t { font-size: .72rem; font-weight: 600; color: var(--ink); }
.p-card .s { font-size: .66rem; color: var(--ink-soft); }
.p-card.warn { background: rgba(240, 140, 60, .12); border-color: rgba(240, 140, 60, .32); }
.p-card.warn .t { color: #b45309; }
@media (prefers-color-scheme: dark) { .p-card.warn .t { color: #fbbf6b; } }

/* ---------- sections ---------- */
section.band { padding: 66px 0; border-top: 1px solid var(--line); }
.eyebrow { text-transform: uppercase; letter-spacing: .14em; font-size: .78rem; font-weight: 700; color: var(--accent-2); margin: 0 0 10px; }
h2.sec { font-size: clamp(1.5rem, 3.2vw, 2rem); letter-spacing: -.01em; margin: 0 0 8px; }
.sec-sub { color: var(--ink-soft); max-width: 40rem; margin: 0 0 34px; font-size: 1.05rem; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 18px; }
.feature {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow);
}
.feature .ic {
  width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center;
  font-size: 20px; background: var(--accent-soft); border: 1px solid var(--accent-ring); margin-bottom: 14px;
}
.feature h3 { font-size: 1.08rem; margin: 0 0 6px; }
.feature p { color: var(--ink-soft); font-size: .97rem; margin: 0; }

/* privacy strip */
.privacy-band { background: var(--accent-soft); }
.privacy-band .grid { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.pill { display: flex; gap: 12px; align-items: flex-start; }
.pill .ic { flex: none; font-size: 20px; }
.pill .t { font-weight: 600; }
.pill .s { color: var(--ink-soft); font-size: .95rem; }

/* steps */
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 22px; }
.step { position: relative; padding-left: 4px; }
.step .n {
  width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center;
  font-weight: 700; color: #fff; background: linear-gradient(100deg, var(--accent), var(--accent-2));
  margin-bottom: 12px;
}
.step h3 { font-size: 1.05rem; margin: 0 0 5px; }
.step p { color: var(--ink-soft); font-size: .96rem; margin: 0; }

/* faq */
.faq details {
  border: 1px solid var(--line); border-radius: 12px; background: var(--surface);
  padding: 4px 18px; margin-bottom: 12px;
}
.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(--accent-2); font-weight: 400; font-size: 1.3rem; line-height: 1; }
.faq details[open] summary::after { content: "\2013"; }
.faq details p { color: var(--ink-soft); margin: 0 0 16px; }

/* cta */
.cta { text-align: center; }
.cta .card {
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff;
  border-radius: 24px; padding: 52px 28px; box-shadow: var(--shadow);
}
.cta h2 { color: #fff; font-size: clamp(1.6rem, 3.5vw, 2.2rem); margin: 0 0 10px; }
.cta p { color: rgba(255,255,255,.86); max-width: 34rem; margin: 0 auto 24px; }
.cta .btn-ghost { background: rgba(255,255,255,.14); color: #fff; border-color: rgba(255,255,255,.35); }

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--line); padding: 34px 0; color: var(--ink-soft); font-size: .92rem; }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 12px 26px; align-items: center; justify-content: space-between; }
.site-footer a { color: var(--ink-soft); }
.site-footer a:hover { color: var(--ink); }
.site-footer .fnav a { margin-left: 20px; }
.site-footer .fnav a:first-child { margin-left: 0; }

/* ---------- article (privacy / support) ---------- */
.article { padding: 54px 0 80px; }
.article h1 { font-size: 2rem; letter-spacing: -.01em; margin: 0 0 4px; }
.article .updated { color: var(--ink-soft); font-size: .95rem; margin-bottom: 30px; }
.article h2 { font-size: 1.2rem; margin: 2.2rem 0 .5rem; }
.article p { color: var(--ink); }
.article .lead { font-size: 1.15rem; color: var(--ink-soft); }
.article strong { color: var(--ink); }
.card {
  background: var(--accent-soft); border: 1px solid var(--accent-ring);
  border-radius: 14px; padding: 20px 22px; margin: 24px 0;
}

@media (max-width: 760px) {
  .hero { padding: 56px 0 44px; }
  .hero .wrap { grid-template-columns: 1fr; gap: 34px; text-align: center; }
  .hero p.lead { margin-left: auto; margin-right: auto; }
  .cta-row { justify-content: center; }
  .badge { margin-inline: auto; }
  .nav a:not(.nav-cta) { display: none; }
  section.band { padding: 48px 0; }
}