:root {
  color-scheme: dark;
  --bg: #080b12;
  --bg-soft: #111827;
  --panel: rgba(17, 24, 39, 0.78);
  --panel-strong: #172033;
  --text: #f8fafc;
  --muted: #a7b0c0;
  --line: rgba(255, 255, 255, 0.14);
  --green: #30f2a3;
  --blue: #67e8f9;
  --orange: #fb923c;
  --pink: #f472b6;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.4);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 18% 10%, rgba(48, 242, 163, 0.18), transparent 28rem),
    radial-gradient(circle at 80% 4%, rgba(103, 232, 249, 0.16), transparent 30rem),
    linear-gradient(180deg, #080b12 0%, #101827 54%, #080b12 100%);
  color: var(--text);
  line-height: 1.6;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(18px);
  background: rgba(8, 11, 18, 0.76);
  border-bottom: 1px solid var(--line);
}

.nav {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand,
.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
}

.brand { font-weight: 800; letter-spacing: -0.03em; }

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(48, 242, 163, 0.55);
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(48, 242, 163, 0.2), rgba(103, 232, 249, 0.1));
  color: var(--green);
}

.nav-links {
  color: var(--muted);
  font-size: 0.95rem;
}

.nav-links a:hover { color: var(--text); }

.nav-cta {
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text) !important;
  background: rgba(255, 255, 255, 0.06);
}

.section {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 92px 0;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  align-items: center;
  gap: 58px;
  min-height: calc(100vh - 72px);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--green);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

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

h1,
h2 {
  line-height: 1;
  letter-spacing: -0.06em;
}

h1 {
  max-width: 760px;
  margin-bottom: 24px;
  font-size: clamp(3.2rem, 9vw, 7rem);
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(2.1rem, 5vw, 4.2rem);
}

h3 {
  margin-bottom: 8px;
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.hero-text,
.split p,
.open-source p {
  color: var(--muted);
  font-size: 1.18rem;
  max-width: 680px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 34px 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 800;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.button:hover { transform: translateY(-2px); }

.button.primary {
  color: #03120c;
  background: linear-gradient(135deg, var(--green), var(--blue));
  box-shadow: 0 12px 30px rgba(48, 242, 163, 0.22);
}

.button.secondary {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.06);
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  max-width: 520px;
  margin: 0;
}

.stats div {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.05);
}

.stats dt {
  font-size: 2rem;
  font-weight: 900;
  line-height: 1;
  color: var(--blue);
}

.stats dd {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.card-stack {
  position: relative;
  min-height: 520px;
}

.game-card {
  position: absolute;
  width: min(340px, 82vw);
  min-height: 430px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.04));
  box-shadow: var(--shadow);
}

.game-card::after {
  content: "";
  position: absolute;
  inset: auto 24px 24px;
  height: 92px;
  border-radius: 18px;
  opacity: 0.5;
  background: repeating-linear-gradient(45deg, transparent 0 9px, rgba(255, 255, 255, 0.12) 9px 10px);
}

.game-card h2 { font-size: 2.2rem; }
.game-card p { color: rgba(255, 255, 255, 0.78); }

.card-type {
  display: inline-flex;
  margin-bottom: 42px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  font-size: 0.74rem;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.attack-card {
  right: 66px;
  top: 14px;
  z-index: 3;
  border-color: rgba(251, 146, 60, 0.48);
}

.mitigation-card {
  right: 8px;
  top: 82px;
  z-index: 2;
  transform: rotate(8deg);
  border-color: rgba(48, 242, 163, 0.45);
}

.progress-card {
  right: 126px;
  top: 136px;
  z-index: 1;
  transform: rotate(-10deg);
  border-color: rgba(103, 232, 249, 0.42);
}

.trust-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--muted);
}

.trust-strip strong {
  color: var(--text);
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.07);
}

.split {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 54px;
  align-items: start;
}

.split.reverse { grid-template-columns: 1.1fr 0.9fr; }

.steps,
.stage-grid {
  display: grid;
  gap: 16px;
}

.steps { grid-template-columns: repeat(3, 1fr); }

.steps article,
.stage-grid article,
.panel,
.open-source,
.cta {
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--panel);
  box-shadow: 0 20px 70px rgba(0, 0, 0, 0.18);
}

.steps article,
.stage-grid article,
.panel { padding: 24px; }

.steps span,
.stage-grid span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  margin-bottom: 28px;
  border-radius: 12px;
  color: #04110d;
  background: var(--green);
  font-weight: 900;
}

.steps p,
.stage-grid p,
.panel li { color: var(--muted); }

.stage-grid {
  grid-template-columns: repeat(5, 1fr);
  margin-top: 30px;
}

.stage-grid article { min-height: 220px; }

.check-list {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 30px;
  margin: 14px 0;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--green);
  font-weight: 900;
}

.open-source {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 34px;
  align-items: center;
  padding: 34px;
}

pre {
  margin: 0;
  overflow-x: auto;
  padding: 24px;
  border: 1px solid rgba(48, 242, 163, 0.24);
  border-radius: 20px;
  background: #05070b;
  color: var(--green);
  font-size: 0.98rem;
}

.cta {
  text-align: center;
  padding: 58px 24px;
}

.cta h2 { max-width: 780px; margin-left: auto; margin-right: auto; }

.site-footer {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 44px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.site-footer p { margin: 0; }
.site-footer a { color: var(--green); }

@media (max-width: 940px) {
  .nav { align-items: flex-start; padding: 16px 0; flex-direction: column; }
  .nav-links { flex-wrap: wrap; }
  .hero,
  .split,
  .split.reverse,
  .open-source { grid-template-columns: 1fr; }
  .hero { padding-top: 56px; min-height: auto; }
  .card-stack { min-height: 460px; }
  .steps { grid-template-columns: 1fr; }
  .stage-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 620px) {
  .section { padding: 64px 0; }
  .nav-links a:not(.nav-cta) { display: none; }
  .stats { grid-template-columns: 1fr; }
  .card-stack { min-height: 420px; }
  .game-card { min-height: 360px; }
  .attack-card { right: 0; }
  .mitigation-card { right: 0; top: 62px; }
  .progress-card { right: 0; top: 112px; }
  .stage-grid { grid-template-columns: 1fr; }
  .site-footer { flex-direction: column; }
}