:root {
  color-scheme: light dark;
  --ink: #10151c;
  --paper: #f3f2ec;
  --paper-raised: #ffffff;
  --line: #dcdad0;
  --muted: #5c6570;
  --amber: #c9781f;
  --amber-soft: #f4e3c8;
  --teal: #1f7d6f;
  --focus: #2563eb;
  --mono: "SFMono-Regular", "JetBrains Mono", Consolas, "Liberation Mono", Menlo, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --edge: clamp(20px, 5vw, 72px);
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #eceae2;
    --paper: #0d1117;
    --paper-raised: #151b23;
    --line: #2a323d;
    --muted: #8b93a1;
    --amber: #e8a33d;
    --amber-soft: #3a2c15;
    --teal: #4fc7b3;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

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

a { color: inherit; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

/* ---- nav ---- */

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px var(--edge);
  gap: 16px;
}
.logo {
  font-family: var(--mono);
  font-weight: 600;
  font-size: 16px;
  letter-spacing: -0.02em;
  text-decoration: none;
}
.cursor { color: var(--amber); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 36px;
  height: 36px;
  background: none;
  border: 1px solid var(--line);
  border-radius: 6px;
  cursor: pointer;
}
.nav-toggle span { display: block; height: 2px; background: var(--ink); margin: 0 7px; }

.nav nav {
  display: flex;
  gap: 28px;
  align-items: center;
}
.nav nav a:not(.btn) {
  text-decoration: none;
  color: var(--muted);
  font-size: 14px;
}
.nav nav a:not(.btn):hover { color: var(--ink); }

/* ---- buttons ---- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 18px;
  border-radius: 6px;
  border: 1px solid var(--line);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  background: transparent;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, transform 0.1s;
}
.btn:hover { border-color: var(--ink); }
.btn:active { transform: translateY(1px); }
.btn-ghost { border-color: transparent; }
.btn-ghost:hover { border-color: var(--line); }
.btn-primary { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn-primary:hover { opacity: 0.88; }
.btn-lg { padding: 13px 26px; font-size: 15px; }
.btn-block { display: flex; width: 100%; margin-top: 20px; }
.btn:disabled { opacity: 0.6; cursor: default; }

/* ---- layout shell ---- */

main { width: 100%; }
section { padding: clamp(48px, 8vw, 96px) var(--edge); }

.section-head { max-width: 640px; margin-bottom: 40px; }
.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--amber);
  margin: 0 0 12px;
}
.section-sub { color: var(--muted); margin: 4px 0 0; }

/* ---- hero ---- */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
  padding-top: clamp(56px, 9vw, 108px);
  padding-bottom: clamp(56px, 9vw, 108px);
}
.hero-copy h1 {
  font-size: clamp(34px, 4.4vw, 56px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
}
.subhead {
  color: var(--muted);
  font-size: clamp(16px, 1.6vw, 19px);
  max-width: 46ch;
  margin: 0 0 28px;
}
.hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 24px; }
.dogfood-note {
  font-size: 13px;
  color: var(--muted);
  max-width: 480px;
  margin: 0;
  padding: 10px 14px;
  border-left: 2px solid var(--amber);
  background: var(--paper-raised);
}

.hero-signature { min-width: 0; }
.terminal {
  background: var(--ink);
  color: var(--paper);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 24px 64px -24px rgba(0, 0, 0, 0.4);
  font-family: var(--mono);
  font-size: 12.5px;
}
.terminal-head {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: color-mix(in srgb, var(--ink) 80%, #000 20%);
}
.dot { width: 9px; height: 9px; border-radius: 50%; background: color-mix(in srgb, var(--paper) 25%, transparent); }
.terminal-title { margin-left: 8px; color: color-mix(in srgb, var(--paper) 55%, transparent); font-size: 11px; }
.terminal-body { padding: 18px 16px 20px; }
.terminal-body p { margin: 0 0 4px; white-space: pre-wrap; word-break: break-word; }
.t-agent { color: var(--amber); }
.t-time { float: right; color: color-mix(in srgb, var(--paper) 45%, transparent); }
.t-decision { color: color-mix(in srgb, var(--paper) 80%, transparent); margin-bottom: 14px !important; padding-left: 4px; }
.t-decision.t-dim { color: color-mix(in srgb, var(--paper) 45%, transparent); }
.t-decision.t-new { color: var(--teal); }
.t-decision em { font-style: normal; color: inherit; font-weight: 600; }
.t-cursor { color: var(--amber); animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* ---- how it works ---- */

.how-it-works { border-top: 1px solid var(--line); background: var(--paper-raised); }
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.card { background: var(--paper-raised); padding: 28px; }
.how-it-works .card { background: var(--paper); }
.card-num {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--amber);
  display: block;
  margin-bottom: 12px;
}
.card h3 { margin: 0 0 10px; font-size: 17px; }
.card p { color: var(--muted); font-size: 14px; margin: 0; line-height: 1.6; }

/* ---- pricing ---- */

.pricing { border-top: 1px solid var(--line); }
.pricing-cards { grid-template-columns: repeat(3, 1fr); }
.plan { display: flex; flex-direction: column; }
.plan h3 { margin: 0; font-size: 15px; font-weight: 600; color: var(--muted); }
.plan .price { font-family: var(--mono); font-size: 36px; font-weight: 600; margin: 12px 0 18px; }
.plan .price span { font-size: 14px; font-weight: 400; color: var(--muted); }
.plan ul { list-style: none; padding: 0; margin: 0 0 4px; font-size: 14px; color: var(--muted); flex-grow: 1; }
.plan ul li { padding: 5px 0; padding-left: 20px; position: relative; }
.plan ul li::before { content: "→"; color: var(--amber); position: absolute; left: 0; }
.plan-featured { background: var(--amber-soft); position: relative; }
.plan-featured h3 { color: var(--ink); }
.badge {
  position: absolute; top: 20px; right: 20px;
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.04em; text-transform: uppercase;
  background: var(--amber); color: var(--paper); padding: 4px 9px; border-radius: 4px;
}
.pricing-note { color: var(--muted); font-size: 13px; margin: 32px 0 0; max-width: 640px; }
.pricing-note a { text-decoration: underline; }

/* ---- cta band ---- */

.cta-band {
  border-top: 1px solid var(--line);
  background: var(--ink);
  color: var(--paper);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.cta-band h2 { font-size: clamp(20px, 2.6vw, 28px); margin: 0; max-width: 32ch; }

footer {
  padding: 24px var(--edge);
  color: var(--muted);
  font-size: 13px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 10px;
}
.footer-links { display: flex; justify-content: center; gap: 16px; }
.footer-links a { color: var(--muted); text-decoration: none; }
.footer-links a:hover { color: var(--ink); }

/* ---- responsive ---- */

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .hero-signature { order: -1; max-width: 480px; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .pricing-cards { grid-template-columns: repeat(2, 1fr); }
  .pricing-cards .plan:first-child { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .nav-toggle { display: flex; }
  .nav nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    padding: 8px var(--edge) 16px;
    display: none;
  }
  .nav nav.open { display: flex; }
  .nav nav a:not(.btn) { padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
  .nav nav .btn { margin-top: 12px; }

  .cards { grid-template-columns: 1fr; }
  .pricing-cards { grid-template-columns: 1fr; }
  .pricing-cards .plan:first-child { grid-column: auto; }
  .plan-featured { order: -1; }

  .cta-band { flex-direction: column; align-items: flex-start; }
  .cta-band .btn { width: 100%; }
}