/* Deadfront landing page. Same palette as the apps. The design rule here is the
   user's: access first. Launch links live in the sticky bar, the hero, every
   half card, the closing block, and the footer — you are never hunting for the app. */

:root {
  --bg: #07131c;
  --panel: #0b1a24;
  --panel-2: #10252f;
  --edge: rgba(41, 199, 255, 0.22);
  --ink: #f2fbff;
  --ink-dim: #9db9c7;
  --accent: #29c7ff;
  --violet: #a278ff;
  --good: #34d17b;
  --warn: #ffb82e;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(1100px 620px at 78% -8%, rgba(41, 199, 255, 0.12), transparent 60%),
    radial-gradient(900px 520px at 12% 4%, rgba(162, 120, 255, 0.1), transparent 58%),
    var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

a { color: inherit; }

/* ── Sticky launch bar ─────────────────────────────────────────────────────── */

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 20px;
  background: rgba(7, 19, 28, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--edge);
}
.brand { display: flex; align-items: center; gap: 9px; text-decoration: none; font-size: 17px; letter-spacing: -0.01em; }
.brand-mark { color: var(--accent); font-size: 19px; }
.nav-launch { display: flex; gap: 9px; }
.launch {
  text-decoration: none;
  font-size: 14px;
  font-weight: 700;
  padding: 9px 16px;
  border-radius: 10px;
  border: 1px solid var(--edge);
}
.launch.field { background: var(--accent); color: #04202e; border-color: var(--accent); }
.launch.sim { background: rgba(162, 120, 255, 0.16); color: #d9caff; border-color: rgba(162, 120, 255, 0.45); }

/* ── Layout ────────────────────────────────────────────────────────────────── */

main { max-width: 960px; margin: 0 auto; padding: 0 20px; }
.section-title { font-size: 13px; font-weight: 800; letter-spacing: 0.14em; color: var(--accent); text-transform: uppercase; text-align: center; margin: 0 0 26px; }

/* ── Hero ──────────────────────────────────────────────────────────────────── */

.hero { text-align: center; padding: 62px 0 40px; }
.eyebrow { display: inline-block; font-size: 11.5px; font-weight: 800; letter-spacing: 0.15em; color: var(--violet); margin-bottom: 20px; padding: 6px 13px; border: 1px solid rgba(162, 120, 255, 0.4); border-radius: 999px; }
.hero h1 { font-size: clamp(28px, 6vw, 46px); line-height: 1.08; letter-spacing: -0.025em; margin: 0 0 20px; }
.hero-sub { font-size: clamp(15px, 2.4vw, 18px); color: var(--ink-dim); max-width: 620px; margin: 0 auto 32px; line-height: 1.6; }

.hero-launch { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.cta {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  text-align: left;
  padding: 16px 22px;
  border-radius: 15px;
  min-width: 250px;
  border: 1px solid var(--edge);
  transition: transform 140ms ease, border-color 140ms ease;
}
.cta:hover { transform: translateY(-2px); }
.cta-icon { font-size: 28px; line-height: 1; }
.cta b { display: block; font-size: 17px; font-weight: 750; }
.cta small { display: block; font-size: 12.5px; opacity: 0.82; margin-top: 2px; }
.cta.field { background: var(--accent); color: #04202e; border-color: var(--accent); }
.cta.field small { color: rgba(4, 32, 46, 0.75); }
.cta.sim { background: rgba(162, 120, 255, 0.16); color: #ece4ff; border-color: rgba(162, 120, 255, 0.5); }
.cta.sim .cta-icon { color: var(--violet); }
.cta.sim small { color: rgba(217, 202, 255, 0.75); }

.hero-note { font-size: 12.5px; color: var(--ink-dim); margin: 18px 0 0; }

/* ── Definition strip ──────────────────────────────────────────────────────── */

.def { margin: 8px auto 12px; padding: 22px 24px; max-width: 760px; border-left: 3px solid var(--violet); background: rgba(162, 120, 255, 0.07); border-radius: 0 12px 12px 0; }
.def p { margin: 0; font-size: 15px; line-height: 1.65; color: var(--ink-dim); }
.def b { color: var(--ink); }

/* ── Halves ────────────────────────────────────────────────────────────────── */

.halves { padding: 52px 0 20px; }
.halves-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 720px) { .halves-grid { grid-template-columns: 1fr; } }
.half { background: var(--panel); border: 1px solid var(--edge); border-radius: 18px; padding: 24px; }
.half-tag { display: inline-block; font-size: 10.5px; font-weight: 800; letter-spacing: 0.12em; padding: 4px 10px; border-radius: 7px; margin-bottom: 14px; }
.field-tag { background: rgba(41, 199, 255, 0.18); color: var(--accent); }
.sim-tag { background: rgba(162, 120, 255, 0.2); color: var(--violet); }
.half h3 { font-size: 21px; margin: 0 0 10px; letter-spacing: -0.01em; }
.half p { font-size: 14.5px; color: var(--ink-dim); margin: 0 0 14px; line-height: 1.6; }
.half ul { margin: 0 0 18px; padding: 0; list-style: none; }
.half li { position: relative; font-size: 13.5px; color: var(--ink-dim); padding: 5px 0 5px 22px; line-height: 1.45; }
.half li::before { content: "→"; position: absolute; left: 0; color: var(--accent); font-weight: 700; }
.half-launch { display: inline-block; text-decoration: none; font-size: 15px; font-weight: 750; color: var(--accent); }
.sim-tag ~ .half-launch, .half:last-child .half-launch { color: var(--violet); }

/* ── How it works ──────────────────────────────────────────────────────────── */

.how { padding: 56px 0 20px; }
.how-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 720px) { .how-grid { grid-template-columns: 1fr; } }
.how-card { background: var(--panel-2); border: 1px solid transparent; border-radius: 15px; padding: 22px; }
.how-card h4 { font-size: 16px; margin: 0 0 9px; letter-spacing: -0.01em; }
.how-card p { font-size: 13.5px; color: var(--ink-dim); margin: 0; line-height: 1.6; }
.how-card.safety { border-color: rgba(255, 184, 46, 0.4); background: rgba(255, 184, 46, 0.07); }
.how-card.safety h4 { color: var(--warn); }

/* ── Closing ───────────────────────────────────────────────────────────────── */

.closing { text-align: center; padding: 60px 0 40px; }
.closing h2 { font-size: 27px; margin: 0 0 8px; letter-spacing: -0.02em; }
.closing p { color: var(--ink-dim); font-size: 15px; margin: 0 0 28px; }

/* ── Footer ────────────────────────────────────────────────────────────────── */

.foot { border-top: 1px solid var(--edge); margin-top: 30px; padding: 30px 0 50px; text-align: center; }
.foot-brand { font-size: 16px; font-weight: 700; margin-bottom: 12px; }
.foot-brand span { color: var(--accent); }
.foot p { font-size: 11.5px; color: rgba(157, 185, 199, 0.7); max-width: 600px; margin: 0 auto 16px; line-height: 1.55; }
.foot-links { display: flex; gap: 20px; justify-content: center; }
.foot-links a { color: var(--accent); text-decoration: none; font-size: 13.5px; font-weight: 700; }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .cta { transition: none; } }