:root {
  color-scheme: dark;
  --bg: #050608;
  --bg-soft: #0c1015;
  --ink: #f7f5ef;
  --muted: #b9c0c7;
  --subtle: #7f8b96;
  --line: rgba(255, 255, 255, 0.12);
  --panel: rgba(255, 255, 255, 0.065);
  --panel-strong: rgba(255, 255, 255, 0.095);
  --gold: #f0c96b;
  --cyan: #80d7e8;
  --red: #f1918d;
  --green: #80d7b0;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.38);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--bg);
  scroll-behavior: smooth;
}

body {
  min-height: 100%;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 18% 12%, rgba(128, 215, 232, 0.18), transparent 26rem),
    radial-gradient(circle at 82% 2%, rgba(240, 201, 107, 0.16), transparent 28rem),
    linear-gradient(180deg, #050608 0%, #0b1015 48%, #07090c 100%);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

a {
  color: inherit;
  text-decoration: none;
}

.page-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  background: rgba(5, 6, 8, 0.86);
  backdrop-filter: blur(18px);
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 1.05rem;
  font-weight: 800;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid rgba(240, 201, 107, 0.48);
  border-radius: 8px;
  background: rgba(240, 201, 107, 0.13);
  color: var(--gold);
  font-size: 0.78rem;
  font-weight: 900;
}

.site-nav {
  display: flex;
  gap: 22px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
}

.site-nav a {
  transition: color 160ms ease;
}

.site-nav a:hover {
  color: var(--ink);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(340px, 0.95fr);
  gap: 48px;
  align-items: center;
  min-height: calc(100vh - 80px);
  padding: 56px 0 72px;
}

.hero-copy {
  max-width: 720px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--gold);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: 5.6rem;
  line-height: 0.95;
  letter-spacing: 0;
}

.lede {
  max-width: 680px;
  margin-bottom: 18px;
  color: #edf2f6;
  font-size: 1.42rem;
  line-height: 1.42;
}

.summary,
.section-copy p,
.card-grid p,
.mistake-grid p,
.site-footer p {
  color: var(--muted);
  line-height: 1.68;
}

.summary {
  max-width: 690px;
  margin-bottom: 0;
  font-size: 1.04rem;
}

.decision-panel {
  display: grid;
  gap: 18px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.045)),
    rgba(9, 13, 18, 0.9);
  box-shadow: var(--shadow);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.panel-header p {
  margin-bottom: 0;
  color: var(--subtle);
  font-size: 0.78rem;
  font-weight: 850;
  text-transform: uppercase;
}

.panel-header span {
  border: 1px solid rgba(128, 215, 176, 0.34);
  border-radius: 8px;
  padding: 8px 10px;
  background: rgba(128, 215, 176, 0.1);
  color: #bbf0d1;
  font-size: 0.74rem;
  font-weight: 850;
  text-transform: uppercase;
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.signal-grid article,
.card-grid article,
.mistake-grid article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.signal-grid article {
  min-height: 132px;
  padding: 18px;
}

.signal-grid strong,
.signal-grid span {
  display: block;
}

.signal-grid strong {
  margin-bottom: 10px;
  color: var(--gold);
  font-size: 0.85rem;
  text-transform: uppercase;
}

.signal-grid span {
  color: #d9e1e7;
  font-size: 0.98rem;
  line-height: 1.42;
}

.risk-note {
  border: 1px solid rgba(241, 145, 141, 0.36);
  border-radius: 8px;
  padding: 20px;
  background: rgba(241, 145, 141, 0.1);
}

.risk-note strong {
  color: #ffc8c4;
  font-size: 0.76rem;
  text-transform: uppercase;
}

.risk-note p {
  margin: 10px 0 0;
  color: #f7eeee;
  font-size: 1.2rem;
  font-weight: 750;
  line-height: 1.4;
}

.section-band {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: 42px;
  padding: 66px 0;
  border-top: 1px solid var(--line);
}

.section-band.dark {
  display: block;
}

.section-copy {
  max-width: 560px;
}

.section-copy.compact {
  max-width: 720px;
}

h2 {
  margin-bottom: 18px;
  font-size: 3.1rem;
  line-height: 1.04;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 12px;
  font-size: 1.25rem;
  line-height: 1.24;
  letter-spacing: 0;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.card-grid article,
.mistake-grid article {
  padding: 22px;
}

.card-grid article {
  min-height: 186px;
}

.card-grid h3 {
  color: #ffffff;
}

.mistake-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 30px;
}

.mistake-grid article {
  min-height: 238px;
  background: rgba(255, 255, 255, 0.052);
}

.mistake-grid span {
  display: inline-flex;
  margin-bottom: 20px;
  color: var(--red);
  font-size: 0.76rem;
  font-weight: 850;
  text-transform: uppercase;
}

.mistake-grid h3 {
  font-size: 1.52rem;
  line-height: 1.28;
}

.output-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.output-list span {
  min-height: 64px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  background: var(--panel-strong);
  color: #f4f7f9;
  font-weight: 760;
}

.site-footer {
  max-width: 900px;
  padding: 30px 0 40px;
  border-top: 1px solid var(--line);
}

.site-footer p {
  margin-bottom: 0;
  font-size: 0.94rem;
}

@media (max-width: 900px) {
  .page-shell {
    width: min(100% - 24px, 720px);
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero,
  .section-band,
  .card-grid,
  .mistake-grid,
  .output-list {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding: 44px 0 58px;
  }

  h1 {
    font-size: 3.55rem;
  }

  h2 {
    font-size: 2.55rem;
  }
}

@media (max-width: 480px) {
  .page-shell {
    width: min(100% - 20px, 420px);
  }

  .site-nav {
    width: 100%;
    justify-content: space-between;
    gap: 10px;
  }

  h1 {
    font-size: 2.8rem;
  }

  h2 {
    font-size: 2.08rem;
  }

  .lede {
    font-size: 1.17rem;
  }

  .signal-grid {
    grid-template-columns: 1fr;
  }

  .decision-panel,
  .card-grid article,
  .mistake-grid article {
    padding: 18px;
  }
}