:root {
  --ink: #0e1c22;
  --ink-soft: #2a3f48;
  --mist: #f2f6f7;
  --mist-deep: #d8e4e8;
  --paper: #fafcfc;
  --signal: #0d7a6f;
  --signal-deep: #065a52;
  --signal-glow: rgba(13, 122, 111, 0.28);
  --line: rgba(14, 28, 34, 0.12);
  --max: 68rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --font-display: "Syne", system-ui, sans-serif;
  --font-body: "Literata", Georgia, serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(120% 80% at 80% -10%, #c8dde3 0%, transparent 55%),
    radial-gradient(90% 60% at -10% 20%, #b9d4cf 0%, transparent 50%),
    linear-gradient(180deg, var(--mist) 0%, var(--paper) 38%, var(--mist-deep) 100%);
  background-attachment: fixed;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--signal-deep);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--signal);
}

code {
  font-size: 0.9em;
  padding: 0.1em 0.35em;
  border-radius: 0.25rem;
  background: rgba(14, 28, 34, 0.06);
}

.grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 50;
  opacity: 0.045;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.top {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem clamp(1.25rem, 4vw, 2.5rem);
  backdrop-filter: blur(12px);
  background: rgba(242, 246, 247, 0.72);
  border-bottom: 1px solid var(--line);
}

.mark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.1rem;
  align-items: center;
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
}

.nav a {
  color: var(--ink-soft);
  text-decoration: none;
}

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

.nav-cta {
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  background: var(--ink);
  color: var(--mist) !important;
}

.nav-cta:hover {
  background: var(--signal-deep);
}

.hero {
  position: relative;
  min-height: min(100svh, 52rem);
  display: grid;
  align-items: end;
  overflow: hidden;
  isolation: isolate;
}

.hero-plane {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(180deg, transparent 35%, rgba(242, 246, 247, 0.92) 88%),
    linear-gradient(115deg, #1a3a42 0%, #0d5c55 42%, #2a5560 78%, #173038 100%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  opacity: 0.28;
  background-image:
    linear-gradient(rgba(242, 246, 247, 0.18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(242, 246, 247, 0.18) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 60% at 60% 40%, #000 20%, transparent 75%);
  animation: grid-drift 28s linear infinite;
}

.hero-glow {
  position: absolute;
  width: min(70vw, 36rem);
  height: min(70vw, 36rem);
  right: -8%;
  top: 8%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(180, 230, 220, 0.45) 0%, transparent 68%);
  animation: glow-breathe 7s var(--ease) infinite alternate;
}

.hero-scan {
  position: absolute;
  left: 0;
  right: 0;
  height: 35%;
  top: -40%;
  background: linear-gradient(
    180deg,
    transparent,
    rgba(242, 246, 247, 0.12),
    transparent
  );
  animation: scan 9s var(--ease) infinite;
}

.hero-copy {
  width: min(100% - 2.5rem, var(--max));
  margin: 0 auto;
  padding: 7rem 0 4.5rem;
}

.brand {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.4rem, 7vw, 4.6rem);
  line-height: 0.95;
  letter-spacing: -0.045em;
  color: var(--ink);
  animation: rise 0.9s var(--ease) both;
}

.headline {
  margin: 0 0 1rem;
  max-width: 16ch;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.45rem, 3.4vw, 2.15rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--ink-soft);
  animation: rise 0.9s var(--ease) 0.12s both;
}

.lede {
  margin: 0 0 1.75rem;
  max-width: 36rem;
  font-size: 1.08rem;
  color: var(--ink-soft);
  animation: rise 0.9s var(--ease) 0.22s both;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  animation: rise 0.9s var(--ease) 0.32s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.85rem;
  padding: 0.65rem 1.25rem;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.92rem;
  text-decoration: none;
  transition: transform 0.25s var(--ease), background 0.25s ease, color 0.25s ease,
    border-color 0.25s ease;
}

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

.btn-primary {
  background: var(--ink);
  color: var(--mist);
}

.btn-primary:hover {
  background: var(--signal-deep);
  color: var(--mist);
}

.btn-ghost {
  border: 1px solid var(--line);
  background: rgba(250, 252, 252, 0.55);
  color: var(--ink);
}

.btn-ghost:hover {
  border-color: var(--signal);
  color: var(--signal-deep);
}

.section {
  width: min(100% - 2.5rem, var(--max));
  margin: 0 auto;
  padding: 5.5rem 0;
}

.section-alt {
  width: 100%;
  max-width: none;
  padding-left: max(1.25rem, calc((100% - var(--max)) / 2));
  padding-right: max(1.25rem, calc((100% - var(--max)) / 2));
  background: rgba(14, 28, 34, 0.04);
  border-block: 1px solid var(--line);
}

.section-head {
  max-width: 36rem;
  margin-bottom: 2.75rem;
}

.section-head h2 {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.section-head p {
  margin: 0;
  color: var(--ink-soft);
}

.pieces {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.piece {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 1rem 1.25rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--line);
}

.piece:last-child {
  border-bottom: 1px solid var(--line);
}

.piece-idx {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  color: var(--signal);
  padding-top: 0.35rem;
}

.piece h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.piece p {
  margin: 0;
  max-width: 40rem;
  color: var(--ink-soft);
}

.flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem 0.35rem;
  margin-bottom: 1.75rem;
}

.flow-step {
  min-width: 7.5rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: 0.35rem;
  background: rgba(250, 252, 252, 0.7);
}

.flow-step-accent {
  border-color: rgba(13, 122, 111, 0.35);
  box-shadow: 0 0 0 4px var(--signal-glow);
}

.flow-step span {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.flow-step small {
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.flow-arrow {
  width: 1.6rem;
  height: 1px;
  background: var(--ink-soft);
  opacity: 0.45;
  position: relative;
}

.flow-arrow::after {
  content: "";
  position: absolute;
  right: 0;
  top: -3px;
  border: 4px solid transparent;
  border-left-color: var(--ink-soft);
}

.flow-note {
  margin: 0;
  max-width: 40rem;
  color: var(--ink-soft);
}

.truths {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.25rem;
  max-width: 40rem;
}

.truths li {
  padding-left: 1.1rem;
  border-left: 3px solid var(--signal);
  color: var(--ink-soft);
}

.truths strong {
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 700;
}

.section-cta {
  text-align: center;
  padding-bottom: 6rem;
}

.section-cta h2 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3.5vw, 2.35rem);
  letter-spacing: -0.03em;
}

.section-cta p {
  margin: 0 auto 1.75rem;
  max-width: 32rem;
  color: var(--ink-soft);
}

.section-cta .cta-row {
  justify-content: center;
}

.foot {
  padding: 2rem clamp(1.25rem, 4vw, 2.5rem) 2.5rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  justify-content: space-between;
  align-items: baseline;
}

.foot-brand {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
}

.foot-meta {
  margin: 0;
  font-size: 0.92rem;
  color: var(--ink-soft);
}

[data-reveal] {
  opacity: 0;
  transform: translateY(1.1rem);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(1.25rem);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes glow-breathe {
  from {
    transform: scale(1);
    opacity: 0.75;
  }
  to {
    transform: scale(1.12);
    opacity: 1;
  }
}

@keyframes scan {
  0% {
    top: -40%;
  }
  100% {
    top: 110%;
  }
}

@keyframes grid-drift {
  from {
    background-position: 0 0;
  }
  to {
    background-position: 48px 48px;
  }
}

@media (max-width: 720px) {
  .nav a:not(.nav-cta) {
    display: none;
  }

  .hero-copy {
    padding-top: 5.5rem;
  }

  .flow-arrow {
    display: none;
  }

  .flow-step {
    flex: 1 1 42%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .hero-grid,
  .hero-glow,
  .hero-scan,
  .brand,
  .headline,
  .lede,
  .cta-row {
    animation: none;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}