:root {
  --ink: #0b1c22;
  --ink-soft: #243b44;
  --mute: #5b737c;
  --paper: #e7f0f2;
  --paper-2: #d3e4e8;
  --line: #b7c0c8;
  --teal: #0f766e;
  --cyan: #0891b2;
  --glow: #5eead4;
  --font-display: "Syne", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-display);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
  overflow-x: hidden;
}

a {
  color: var(--cyan);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

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

.bg-mesh {
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(900px 520px at 85% -5%, rgba(14, 116, 144, 0.18), transparent 60%),
    radial-gradient(700px 480px at -10% 30%, rgba(15, 118, 110, 0.14), transparent 55%),
    radial-gradient(600px 400px at 50% 110%, rgba(94, 234, 212, 0.16), transparent 50%),
    var(--paper);
}

.bg-lanes {
  position: fixed;
  inset: 0;
  z-index: -1;
  opacity: 0.35;
  background-image: repeating-linear-gradient(
    105deg,
    transparent 0 46px,
    rgba(11, 28, 34, 0.04) 46px 48px
  );
  mask-image: linear-gradient(to bottom, black 0%, transparent 70%);
  pointer-events: none;
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: 1120px;
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
}

.brand-mark {
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.25rem;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

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

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

.nav-github {
  padding: 0.45rem 0.75rem;
  border: 1px solid rgba(11, 28, 34, 0.18);
  border-radius: 6px;
  color: var(--ink) !important;
}

.hero {
  max-width: 1120px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4.5rem;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2.5rem;
  align-items: center;
  min-height: calc(100vh - 5rem);
}

.eyebrow {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal);
}

.brand-hero {
  margin: 0;
  font-size: clamp(3.4rem, 9vw, 6.2rem);
  line-height: 0.92;
  letter-spacing: -0.045em;
  font-weight: 800;
}

.lede {
  margin: 1.25rem 0 0;
  max-width: 34rem;
  font-size: 1.15rem;
  color: var(--ink-soft);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.15rem;
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

.btn:hover {
  transform: translateY(-1px);
}

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

.btn-primary:hover {
  background: #143039;
  color: var(--glow);
}

.btn-ghost {
  border: 1px solid rgba(11, 28, 34, 0.22);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.35);
}

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

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

.runner {
  width: min(100%, 380px);
  filter: drop-shadow(0 18px 40px rgba(8, 145, 178, 0.18));
}

.runner-figure {
  transform-origin: 210px 390px;
  animation: stride 1.05s ease-in-out infinite;
}

.arm-l,
.leg-r {
  transform-origin: center;
  animation: swing-a 1.05s ease-in-out infinite;
}

.arm-r,
.leg-l {
  transform-origin: center;
  animation: swing-b 1.05s ease-in-out infinite;
}

.stripe {
  animation: belt 1.4s linear infinite;
}

@keyframes stride {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

@keyframes swing-a {
  0%,
  100% {
    transform: rotate(-4deg);
  }
  50% {
    transform: rotate(5deg);
  }
}

@keyframes swing-b {
  0%,
  100% {
    transform: rotate(5deg);
  }
  50% {
    transform: rotate(-4deg);
  }
}

@keyframes belt {
  from {
    stroke-dashoffset: 0;
  }
  to {
    stroke-dashoffset: -40;
  }
}

.metric-float {
  position: absolute;
  padding: 0.65rem 0.85rem;
  border: 1px solid rgba(11, 28, 34, 0.12);
  border-radius: 10px;
  background: rgba(231, 240, 242, 0.82);
  backdrop-filter: blur(8px);
  font-family: var(--font-mono);
  box-shadow: 0 10px 30px rgba(11, 28, 34, 0.06);
  animation: float 4.5s ease-in-out infinite;
}

.metric-float span {
  display: block;
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mute);
}

.metric-float strong {
  font-size: 1rem;
  font-weight: 500;
  color: var(--ink);
}

.m1 {
  top: 12%;
  left: 0;
  animation-delay: 0s;
}

.m2 {
  top: 38%;
  right: 0;
  animation-delay: 0.6s;
}

.m3 {
  bottom: 16%;
  left: 8%;
  animation-delay: 1.1s;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-7px);
  }
}

.section {
  max-width: 1120px;
  margin: 0 auto;
  padding: 4.5rem 1.5rem;
}

.section-alt {
  background: rgba(211, 228, 232, 0.45);
  max-width: none;
  padding-left: max(1.5rem, calc((100% - 1120px) / 2 + 1.5rem));
  padding-right: max(1.5rem, calc((100% - 1120px) / 2 + 1.5rem));
}

.section h2 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  letter-spacing: -0.03em;
  max-width: 18ch;
}

.section-lede {
  margin: 0.9rem 0 0;
  max-width: 40rem;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.pipeline {
  list-style: none;
  margin: 2.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.25rem;
  counter-reset: none;
}

.pipeline li {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  column-gap: 1rem;
  row-gap: 0.15rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(11, 28, 34, 0.12);
}

.pipeline .step {
  grid-row: 1 / span 2;
  align-self: start;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--teal);
  letter-spacing: 0.08em;
  padding-top: 0.2rem;
}

.pipeline strong {
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.pipeline li > span:last-child {
  color: var(--mute);
}

.views {
  list-style: none;
  margin: 2.25rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.75rem;
}

@media (min-width: 800px) {
  .pipeline {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
  }

  .pipeline li {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
    border-top: none;
    border-left: 1px solid rgba(11, 28, 34, 0.12);
    padding: 0 0 0 1rem;
  }

  .pipeline .step {
    grid-row: auto;
  }

  .views {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }
}

.view-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--teal);
}

.view-title {
  margin: 0.35rem 0 0.5rem;
  font-size: 1.6rem;
  letter-spacing: -0.03em;
  font-weight: 700;
}

.views p:last-child {
  margin: 0;
  color: var(--ink-soft);
}

.code {
  margin: 1.75rem 0 0;
  padding: 1.25rem 1.35rem;
  overflow-x: auto;
  border-radius: 10px;
  background: var(--ink);
  color: #cffafe;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1.65;
  border: 1px solid rgba(94, 234, 212, 0.2);
}

.after-code {
  margin: 1rem 0 0;
  color: var(--mute);
}

.footer {
  max-width: 1120px;
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
  border-top: 1px solid rgba(11, 28, 34, 0.1);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--mute);
}

.footer a {
  color: inherit;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 700ms ease, transform 700ms ease;
}

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

@media (max-width: 880px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 1.5rem;
  }

  .hero-stage {
    order: -1;
    min-height: 340px;
  }

  .metric-float.m1 {
    left: 4%;
  }

  .metric-float.m2 {
    right: 4%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .runner-figure,
  .arm-l,
  .arm-r,
  .leg-l,
  .leg-r,
  .stripe,
  .metric-float {
    animation: none;
  }

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