:root {
  --ink: #0e0e0e;
  --ink-soft: #1c1c1c;
  --muted: #4a4a4a;
  --faint: #7a7a7a;
  --paper: #f7f4eb;
  --bg: #0f1210;
  --bg-mid: #171c18;
  --lime: #d9f24e;
  --lime-soft: rgba(217, 242, 78, 0.14);
  --line: rgba(247, 244, 235, 0.12);
  --up: #3dcf7a;
  --pass: #e85a5a;
  --peach: #f4c9a5;
  --display: "Bricolage Grotesque", system-ui, sans-serif;
  --body: "IBM Plex Sans", system-ui, sans-serif;
  --max: 1080px;
  --hero-max: 1160px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--paper);
  background:
    radial-gradient(900px 520px at 90% -5%, rgba(217, 242, 78, 0.18), transparent 55%),
    radial-gradient(700px 480px at -5% 25%, rgba(244, 201, 165, 0.1), transparent 50%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-mid) 45%, #121612 100%);
  font-family: var(--body);
  line-height: 1.55;
  min-height: 100vh;
}

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

.site-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem clamp(1rem, 4vw, 2.5rem);
  backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  border-bottom: 1px solid var(--line);
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.nav-mark {
  width: 2.1rem;
  height: 2.1rem;
  display: grid;
  place-items: center;
  background: var(--ink);
  color: var(--lime);
  border: 2.5px solid var(--lime);
  border-radius: 0.65rem;
  font-family: var(--display);
  font-weight: 800;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
}

.nav-word {
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -0.03em;
}

.nav-cta,
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.15rem;
  background: var(--lime);
  color: var(--ink);
  font-family: var(--display);
  font-weight: 800;
  font-size: 0.92rem;
  letter-spacing: -0.02em;
  border-radius: 999px;
  border: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.nav-cta:hover,
.btn-primary:hover {
  transform: translateY(-1px) scale(1.02);
  box-shadow: 0 10px 28px rgba(217, 242, 78, 0.25);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  padding: 0.7rem 0.4rem;
  color: color-mix(in srgb, var(--paper) 78%, transparent);
  font-family: var(--display);
  font-weight: 650;
  font-size: 0.95rem;
  border-bottom: 1.5px solid color-mix(in srgb, var(--lime) 55%, transparent);
}

.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
  max-width: var(--hero-max);
  margin: 0 auto;
  min-height: calc(100vh - 4.2rem);
  padding: clamp(2.5rem, 7vw, 5rem) clamp(1rem, 4vw, 2.5rem) clamp(3rem, 8vw, 5rem);
}

.brand-lockup {
  margin: 0 0 1rem;
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(1.35rem, 2.4vw, 1.7rem);
  letter-spacing: -0.04em;
  color: var(--lime);
}

.hero h1,
.section h2,
.closing h2,
.coming-panel h2 {
  margin: 0;
  font-family: var(--display);
  font-weight: 800;
  letter-spacing: -0.045em;
  line-height: 1.05;
}

.hero h1 {
  font-size: clamp(2.6rem, 6.2vw, 4.4rem);
  max-width: 11ch;
}

.hero-sub {
  margin: 1.15rem 0 0;
  max-width: 36ch;
  font-size: 1.08rem;
  color: color-mix(in srgb, var(--paper) 72%, transparent);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.4rem;
  margin-top: 1.75rem;
}

.hero-stage {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 420px;
}

.card-stack {
  position: relative;
  width: min(100%, 340px);
  height: 420px;
}

.demo-card {
  position: absolute;
  inset: auto 0 0;
  margin: auto;
  width: 100%;
  padding: 1.25rem 1.3rem 1.35rem;
  border-radius: 1.5rem;
  border: 1px solid rgba(14, 14, 14, 0.08);
  background: var(--paper);
  color: var(--ink);
  box-shadow: 0 24px 50px rgba(0, 0, 0, 0.35);
}

.card-back {
  transform: translate(18px, -34px) rotate(7deg) scale(0.94);
  opacity: 0.55;
  animation: float-back 7s ease-in-out infinite;
}

.card-mid {
  transform: translate(-14px, -18px) rotate(-5deg) scale(0.97);
  opacity: 0.78;
  animation: float-mid 6.2s ease-in-out infinite;
}

.card-front {
  z-index: 2;
  animation: float-front 5.4s ease-in-out infinite;
}

.demo-mono,
.demo-name {
  font-family: var(--display);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.demo-mono {
  font-size: 1.5rem;
}

.demo-tag {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.demo-top {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 0.85rem;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--faint);
  font-weight: 600;
}

.live-dot {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--up);
  box-shadow: 0 0 0 0 rgba(61, 207, 122, 0.55);
  animation: pulse 2s ease-out infinite;
}

.demo-name {
  margin: 0;
  font-size: 2rem;
}

.demo-type {
  margin: 0.25rem 0 0;
  font-family: var(--display);
  font-weight: 700;
  font-size: 0.95rem;
  color: color-mix(in srgb, var(--ink) 70%, #6a7a20);
}

.demo-bio {
  margin: 0.7rem 0 0;
  font-size: 0.95rem;
  color: var(--muted);
}

.demo-flags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1rem;
}

.flag-g,
.flag-r {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.28rem 0.55rem;
  border-radius: 999px;
}

.flag-g {
  background: #ddeee0;
  color: #0f6b3d;
}

.flag-r {
  background: #f6dcdc;
  color: #8f2f2f;
}

.demo-actions {
  display: flex;
  gap: 0.55rem;
  margin-top: 1.2rem;
}

.act {
  flex: 1;
  text-align: center;
  padding: 0.55rem 0.4rem;
  border-radius: 999px;
  font-family: var(--display);
  font-weight: 800;
  font-size: 0.85rem;
}

.act.pass {
  background: #f6dcdc;
  color: var(--pass);
}

.act.like {
  background: var(--lime);
  color: var(--ink);
}

.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(3.5rem, 9vw, 6.5rem) clamp(1rem, 4vw, 2.5rem);
}

.eyebrow {
  margin: 0 0 0.85rem;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--lime);
}

.section h2 {
  font-size: clamp(1.85rem, 4vw, 2.85rem);
  max-width: 18ch;
}

.lead {
  margin: 1.15rem 0 0;
  max-width: 58ch;
  font-size: 1.08rem;
  color: color-mix(in srgb, var(--paper) 74%, transparent);
}

.muted-para {
  margin-top: 1rem;
  color: color-mix(in srgb, var(--paper) 58%, transparent);
}

.persona-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem 1.5rem;
  margin-top: 2.4rem;
}

.persona-block h3 {
  margin: 0;
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: -0.03em;
}

.persona-block p {
  margin: 0.45rem 0 0;
  color: color-mix(in srgb, var(--paper) 62%, transparent);
  max-width: 34ch;
}

.swipe-legend {
  list-style: none;
  margin: 2.2rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.1rem;
}

.swipe-legend li {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 1rem;
  align-items: start;
}

.chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.4rem;
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  font-family: var(--display);
  font-weight: 800;
  font-size: 0.85rem;
}

.chip.pass {
  background: rgba(232, 90, 90, 0.18);
  color: #ff9b9b;
}

.chip.like {
  background: var(--lime-soft);
  color: var(--lime);
}

.chip.super {
  background: rgba(244, 201, 165, 0.18);
  color: var(--peach);
}

.swipe-legend strong {
  display: block;
  font-family: var(--display);
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.swipe-legend p {
  margin: 0.25rem 0 0;
  color: color-mix(in srgb, var(--paper) 62%, transparent);
}

.learn-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.15rem;
  margin-top: 2.3rem;
}

.learn-card {
  padding: 1.25rem 1.2rem 1.35rem;
  border-radius: 1.15rem;
  border: 1px solid color-mix(in srgb, var(--lime) 28%, var(--line));
  background: linear-gradient(160deg, rgba(217, 242, 78, 0.1), transparent 55%);
}

.learn-card h3 {
  margin: 0;
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.03em;
  color: var(--lime);
}

.learn-card p {
  margin: 0.45rem 0 0;
  color: color-mix(in srgb, var(--paper) 68%, transparent);
  max-width: 28ch;
}

.steps {
  list-style: none;
  margin: 2.4rem 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.step {
  display: grid;
  grid-template-columns: 4.2rem 1fr;
  gap: 1rem;
  padding: 1.35rem 0;
  border-top: 1px solid var(--line);
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

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

.step.in {
  opacity: 1;
  transform: none;
}

.step-num {
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--lime);
  letter-spacing: -0.03em;
}

.step h3 {
  margin: 0;
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: -0.03em;
}

.step p {
  margin: 0.4rem 0 0;
  max-width: 52ch;
  color: color-mix(in srgb, var(--paper) 64%, transparent);
}

.coming-panel {
  margin-top: 0.5rem;
  padding: clamp(1.6rem, 4vw, 2.4rem);
  border: 1px solid color-mix(in srgb, var(--lime) 35%, var(--line));
  border-radius: 1.4rem;
  background:
    linear-gradient(145deg, rgba(217, 242, 78, 0.08), transparent 45%),
    color-mix(in srgb, var(--bg-mid) 80%, #000);
}

.soon-badge {
  display: inline-block;
  margin-bottom: 0.9rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: var(--lime);
  color: var(--ink);
  font-family: var(--display);
  font-weight: 800;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.coming-panel h2 {
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  max-width: 16ch;
}

.coming-panel > p {
  margin: 1rem 0 0;
  max-width: 52ch;
  color: color-mix(in srgb, var(--paper) 72%, transparent);
}

.coming-list {
  margin: 1.25rem 0 0;
  padding-left: 1.15rem;
  color: color-mix(in srgb, var(--paper) 68%, transparent);
}

.coming-list li {
  margin: 0.35rem 0;
}

.coming-note {
  margin-top: 1.25rem !important;
  font-size: 0.92rem;
  color: color-mix(in srgb, var(--paper) 52%, transparent) !important;
}

.closing {
  text-align: center;
  padding: clamp(4rem, 10vw, 7rem) clamp(1rem, 4vw, 2.5rem);
  background:
    radial-gradient(600px 280px at 50% 100%, rgba(217, 242, 78, 0.16), transparent 70%);
}

.closing h2 {
  margin: 0.4rem auto 0;
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  max-width: 16ch;
}

.closing .hero-sub {
  margin-left: auto;
  margin-right: auto;
}

.closing .btn-primary {
  margin-top: 1.6rem;
}

.site-foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  padding: 1.4rem clamp(1rem, 4vw, 2.5rem) 2rem;
  border-top: 1px solid var(--line);
  color: color-mix(in srgb, var(--paper) 48%, transparent);
  font-size: 0.88rem;
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.in {
  opacity: 1;
  transform: none;
}

@keyframes float-front {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes float-mid {
  0%, 100% { transform: translate(-14px, -18px) rotate(-5deg) scale(0.97); }
  50% { transform: translate(-14px, -28px) rotate(-4deg) scale(0.97); }
}

@keyframes float-back {
  0%, 100% { transform: translate(18px, -34px) rotate(7deg) scale(0.94); }
  50% { transform: translate(18px, -42px) rotate(8deg) scale(0.94); }
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(61, 207, 122, 0.55); }
  70% { box-shadow: 0 0 0 10px rgba(61, 207, 122, 0); }
  100% { box-shadow: 0 0 0 0 rgba(61, 207, 122, 0); }
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 2.2rem;
  }

  .hero h1 {
    max-width: none;
  }

  .hero-stage {
    order: -1;
    min-height: 360px;
  }

  .card-stack {
    height: 380px;
    width: min(100%, 300px);
  }

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

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

  .swipe-legend li {
    grid-template-columns: 1fr;
    gap: 0.55rem;
  }
}

@media (max-width: 520px) {
  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .step {
    grid-template-columns: 3rem 1fr;
  }
}