:root {
  color-scheme: dark;
  --bg: #07080c;
  --bg-elevated: #10131a;
  --bg-card: #151922;
  --line: rgba(255, 255, 255, 0.08);
  --text: #f3f5f8;
  --muted: #9aa3b5;
  --accent: #7ee0c8;
  --accent-dim: rgba(126, 224, 200, 0.14);
  --gold: #e8c07a;
  --danger: #ff8b8b;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  --radius: 20px;
  --max: 1080px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", sans-serif;
  line-height: 1.5;
}

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

.skip {
  position: absolute;
  left: -999px;
  top: 8px;
}
.skip:focus {
  left: 12px;
  background: var(--bg-card);
  padding: 8px 12px;
  border-radius: 8px;
}

.site-header, .site-footer {
  border-bottom: 1px solid var(--line);
}
.site-footer { border-bottom: 0; border-top: 1px solid var(--line); }

.nav, .foot, .wrap {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 650;
  letter-spacing: -0.03em;
  text-decoration: none;
}
.brand:hover { text-decoration: none; color: var(--text); }

.mark {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  color: var(--muted);
  font-size: 0.92rem;
}
.nav-links a { color: var(--muted); }
.nav-links a[aria-current="page"] { color: var(--text); }

.hero {
  padding: 64px 0 32px;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.kicker {
  color: var(--accent);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 650;
  margin: 0 0 14px;
}

h1 {
  font-size: clamp(2.1rem, 4.4vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: -0.045em;
  margin: 0 0 16px;
  font-weight: 700;
}

.lede {
  font-size: 1.12rem;
  color: var(--muted);
  max-width: 36rem;
  margin: 0 0 28px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
}
.btn:hover { text-decoration: none; }
.btn-primary {
  background: var(--accent);
  color: #06251d;
}
.btn-primary:hover { filter: brightness(1.05); }
.btn-ghost {
  border-color: var(--line);
  color: var(--text);
  background: transparent;
}
.btn-ghost:hover { background: var(--bg-elevated); }

.phone {
  position: relative;
  aspect-ratio: 9 / 16;
  max-width: 280px;
  margin: 0 auto;
  border-radius: 36px;
  padding: 12px;
  background: linear-gradient(180deg, #1c2230, #0c0f16);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.phone-screen {
  height: 100%;
  border-radius: 26px;
  overflow: hidden;
  background:
    radial-gradient(120% 80% at 20% 0%, rgba(126, 224, 200, 0.18), transparent 50%),
    linear-gradient(180deg, #243044, #10141c 55%, #0a0c11);
  display: flex;
  flex-direction: column;
  padding: 22px 16px;
}
.phone-bar {
  height: 6px;
  width: 78px;
  border-radius: 999px;
  background: rgba(255,255,255,0.18);
  margin: 0 auto 18px;
}
.phone-live {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
}
.phone-title {
  margin: 8px 0 18px;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
}
.chip-row { display: flex; flex-direction: column; gap: 8px; }
.chip {
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 12px;
  font-size: 0.85rem;
}
.chip strong { display: block; font-size: 0.78rem; color: var(--accent); font-weight: 650; }

.section { padding: 28px 0 8px; }
.section h2 {
  font-size: 1.45rem;
  letter-spacing: -0.03em;
  margin: 0 0 10px;
}
.section p.intro { color: var(--muted); max-width: 40rem; }

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 24px 0 8px;
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 20px 22px;
}
.card h3 {
  margin: 0 0 8px;
  font-size: 1.02rem;
  letter-spacing: -0.02em;
}
.card p { margin: 0; color: var(--muted); font-size: 0.95rem; }

.steps {
  display: grid;
  gap: 0;
  margin: 20px 0 40px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-elevated);
}
.step {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 8px;
  padding: 18px 20px;
  border-top: 1px solid var(--line);
}
.step:first-child { border-top: 0; }
.step-n {
  color: var(--accent);
  font-weight: 700;
  letter-spacing: -0.04em;
}
.step h3 { margin: 0 0 4px; font-size: 1rem; }
.step p { margin: 0; color: var(--muted); }

.prose { padding: 40px 0 72px; max-width: 720px; }
.prose h1 { font-size: 2rem; }
.prose h2 { margin-top: 1.8em; font-size: 1.15rem; }
.prose p, .prose li { color: var(--muted); }
.prose ul { padding-left: 1.2rem; }
.prose code {
  font-size: 0.88em;
  background: var(--bg-card);
  padding: 0.1em 0.35em;
  border-radius: 6px;
}

.share-main { padding: 36px 0 72px; max-width: 720px; }
.share-main h1 { font-size: 1.5rem; }
.share-main video {
  width: 100%;
  border-radius: 16px;
  background: #000;
  margin: 20px 0;
  border: 1px solid var(--line);
}
.report {
  white-space: pre-wrap;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  overflow-x: auto;
  color: var(--muted);
}
.meta { color: var(--muted); }
.meta code { font-size: 0.85rem; }

.foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding: 28px 0 40px;
  color: var(--muted);
  font-size: 0.88rem;
}
.foot nav { display: flex; gap: 16px; }

@media (max-width: 840px) {
  .hero { grid-template-columns: 1fr; padding-top: 36px; }
  .phone { max-width: 240px; }
  .grid { grid-template-columns: 1fr; }
  .nav { flex-wrap: wrap; }
}