:root {
  --bg: #fafaf8;
  --surface: #f2f3ef;
  --card: #ffffff;
  --text: #0b0f0e;
  --muted: #5b625f;
  --line: #e2e4de;
  --accent: #0f766e;
  --accent-2: #0e7490;
  --logo-ink: #0c243c;
  --coil-1a: #22a6d8;
  --coil-1b: #0c243c;
  --coil-2a: #46d3f6;
  --coil-2b: #0cb4e4;
  --coil-3a: #1c80aa;
  --coil-3b: #0c243c;
  --coil-4a: #47c6f2;
  --coil-4b: #0aa2da;
  --on-accent: #ffffff;
  --chip-bg: #e3f3ef;
  --grid: rgba(11, 15, 14, 0.055);
  --glow: rgba(16, 185, 129, 0.20);
  --glow-2: rgba(14, 116, 144, 0.14);
  --shadow: 0 1px 2px rgba(11, 15, 14, 0.04), 0 12px 40px -12px rgba(11, 15, 14, 0.18);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #090c0b;
    --surface: #0d1211;
    --card: #111817;
    --text: #eef2f0;
    --muted: #97a39f;
    --line: #1e2926;
    --accent: #5eead4;
    --accent-2: #67e8f9;
    --logo-ink: #eef2f0;
    --coil-1a: #4cc0ec;
    --coil-1b: #1a6c9c;
    --coil-2a: #8ee6fb;
    --coil-2b: #3cc8f0;
    --coil-3a: #45aee0;
    --coil-3b: #1a6c9c;
    --coil-4a: #9be9fc;
    --coil-4b: #4cc9f2;
    --on-accent: #04201b;
    --chip-bg: rgba(94, 234, 212, 0.12);
    --grid: rgba(255, 255, 255, 0.045);
    --glow: rgba(45, 212, 191, 0.16);
    --glow-2: rgba(103, 232, 249, 0.10);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 20px 50px -20px rgba(0, 0, 0, 0.8);
  }
}

* { box-sizing: border-box; margin: 0; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
}

a { color: var(--accent); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.wrap {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.skip {
  position: absolute;
  left: -9999px;
}

.skip:focus {
  left: 16px;
  top: 16px;
  z-index: 20;
  padding: 8px 12px;
  background: var(--card);
}

/* Header */

.top {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--bg);
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--line);
}

.top-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 64px;
}

.mark {
  display: inline-flex;
  align-items: baseline;
  color: var(--logo-ink);
  font-size: 25px;
  font-weight: 650;
  letter-spacing: -0.02em;
  line-height: 1;
  text-decoration: none;
  margin-right: auto;
}

/* The "o" in the logo: a coil spring ("kofetz" means "jumps"), traced from the
   reference design. Four tilted rings, each shaded top to bottom. */
.coil {
  height: 0.74em;
  width: auto;
  margin-right: -0.02em;
  overflow: visible;
  fill: none;
  stroke-width: 5.5;
}

.coil .s1a { stop-color: var(--coil-1a); }
.coil .s1b { stop-color: var(--coil-1b); }
.coil .s2a { stop-color: var(--coil-2a); }
.coil .s2b { stop-color: var(--coil-2b); }
.coil .s3a { stop-color: var(--coil-3a); }
.coil .s3b { stop-color: var(--coil-3b); }
.coil .s4a { stop-color: var(--coil-4a); }
.coil .s4b { stop-color: var(--coil-4b); }

.foot .coil { height: 15px; margin: 0; }

.nav { display: none; gap: 28px; }

.nav a {
  font-size: 15px;
  color: var(--muted);
  text-decoration: none;
}

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

/* Type */

h1, h2 {
  font-weight: 650;
  letter-spacing: -0.035em;
}

h1 {
  font-size: clamp(42px, 7vw, 76px);
  line-height: 1.02;
  margin-bottom: 24px;
}

h2 {
  font-size: clamp(30px, 4.4vw, 46px);
  line-height: 1.08;
  max-width: 18em;
  margin-bottom: 48px;
}

h3 {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.3;
  margin-bottom: 8px;
}

.grad {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.eyebrow {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

.lede {
  font-size: clamp(18px, 2.2vw, 21px);
  color: var(--muted);
  max-width: 32em;
  margin-bottom: 36px;
}

/* Buttons */

.button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 22px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: var(--on-accent);
  font-weight: 600;
  text-decoration: none;
  box-shadow: 0 8px 24px -8px var(--glow);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.button:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 30px -8px var(--glow);
}

.button-small {
  padding: 9px 14px;
  font-size: 14px;
  border-radius: 8px;
}

.button-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
  box-shadow: none;
}

.button-ghost:hover {
  border-color: var(--muted);
  box-shadow: none;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 32px;
}

.facts {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  font-size: 14px;
  color: var(--muted);
}

.facts li::before {
  content: "✓";
  color: var(--accent);
  margin-right: 8px;
}

/* Hero */

.hero {
  position: relative;
  isolation: isolate;
  padding: 72px 0 88px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(600px 400px at 15% 10%, var(--glow), transparent 70%),
    radial-gradient(500px 400px at 85% 40%, var(--glow-2), transparent 70%),
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: auto, auto, 48px 48px, 48px 48px;
  -webkit-mask-image: linear-gradient(to bottom, #000 60%, transparent);
  mask-image: linear-gradient(to bottom, #000 60%, transparent);
}

.hero-grid {
  display: grid;
  gap: 56px;
  align-items: center;
}

.hero-grid > * { min-width: 0; }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  margin-bottom: 28px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
}

.pulse {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2.4s ease-out infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 var(--accent); }
  70% { box-shadow: 0 0 0 7px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}

/* Demo window */

.demo { margin: 0; }

.demo-window {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--card);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.demo-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}

.demo-title { font-weight: 600; }

.demo-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 12px;
}

.demo-body {
  display: grid;
  gap: 12px;
  padding: 18px;
  font-size: 14px;
  line-height: 1.5;
}

.bubble {
  max-width: 85%;
  padding: 10px 14px;
  border-radius: 14px;
}

.bubble-in {
  background: var(--surface);
  border: 1px solid var(--line);
  border-bottom-left-radius: 4px;
}

.bubble-out {
  justify-self: end;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: var(--on-accent);
  border-bottom-right-radius: 4px;
}

.summary {
  margin-top: 4px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--bg);
}

.summary-head {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  margin-bottom: 10px;
}

.spark { color: var(--accent); }

.summary dl { display: grid; gap: 6px; }

.summary dl div {
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.summary dt { color: var(--muted); }

.summary dd { text-align: right; }

.summary-foot { margin-top: 12px; }

.chip {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--chip-bg);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
}

.demo figcaption {
  margin-top: 12px;
  font-size: 13px;
  color: var(--muted);
  text-align: center;
}

/* Sections */

.section { padding: 96px 0; }

.section-tight { padding: 64px 0; }

.section-alt {
  background: var(--surface);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

section[id] { scroll-margin-top: 64px; }

/* Steps */

.steps {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 16px;
}

.steps li {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--card);
}

.step-num {
  display: block;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 13px;
  color: var(--accent);
  margin-bottom: 24px;
}

.steps p, .card p, .services p { color: var(--muted); }

/* Cards */

.cards {
  display: grid;
  gap: 16px;
  margin-bottom: 24px;
}

.card {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--card);
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.icon {
  width: 40px;
  height: 40px;
  padding: 9px;
  margin-bottom: 20px;
  border-radius: 10px;
  background: var(--chip-bg);
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.control {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: 14px;
  background: var(--card);
}

.control .icon { flex: none; margin: 0; }

/* Services */

.services {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 32px;
}

.services li {
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

/* About */

.about-text {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.35;
  max-width: 28em;
}

/* Contact */

.cta {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 64px 24px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--card);
  text-align: center;
}

.cta-glow {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(500px 260px at 50% 0%, var(--glow), transparent 70%),
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: auto, 40px 40px, 40px 40px;
  -webkit-mask-image: radial-gradient(ellipse at 50% 0%, #000 30%, transparent 75%);
  mask-image: radial-gradient(ellipse at 50% 0%, #000 30%, transparent 75%);
}

.cta h2 { margin: 0 auto 16px; }

.cta p {
  max-width: 32em;
  margin: 0 auto 32px;
  color: var(--muted);
}

/* Footer */

.foot {
  border-top: 1px solid var(--line);
  font-size: 14px;
  color: var(--muted);
}

.foot-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  padding-top: 32px;
  padding-bottom: 40px;
}

.foot p { display: inline-flex; align-items: center; gap: 10px; }

.foot a { color: inherit; }

/* Wider screens */

@media (min-width: 720px) {
  .nav { display: flex; }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .services { grid-template-columns: repeat(4, 1fr); }
  .section { padding: 128px 0; }
  .section-tight { padding: 88px 0; }
  .cta { padding: 88px 48px; }
}

@media (min-width: 980px) {
  .hero { padding: 104px 0 120px; }
  .hero-grid { grid-template-columns: 1.15fr 1fr; gap: 64px; }
}