:root {
  color-scheme: dark;
  --bg: #060708;
  --surface: #0b0d0e;
  --raised: #111516;
  --line: #2a3330;
  --ink: #e4ebe8;
  --muted: #a4b0ac;
  --signal: #c6ff3d;
  --on-signal: #0a0f02;
  --sans: "PingFang SC","Noto Sans SC",system-ui,sans-serif;
  --mono: ui-monospace,Menlo,monospace
}
* {
  box-sizing: border-box
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 24px
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.7 var(--sans)
}
a {
  color: inherit;
  text-underline-offset: 5px
}
button,a {
  -webkit-tap-highlight-color: transparent
}
button {
  font: inherit;
  cursor: pointer
}
a:focus-visible,button:focus-visible,summary:focus-visible {
  outline: 3px solid var(--signal);
  outline-offset: 5px
}
button:disabled {
  cursor: wait;
  opacity: .6
}
[hidden] {
  display: none!important
}
.skip {
  position: absolute;
  top: -80px;
  left: 12px;
  padding: 12px;
  background: var(--signal);
  color: var(--on-signal);
  z-index: 2
}
.skip:focus {
  top: 12px
}
header,footer {
  max-width: 1200px;
  margin: auto;
  padding: 24px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px
}
header {
  border-bottom: 1px solid var(--line)
}
nav {
  display: flex;
  gap: 24px;
  flex-wrap: wrap
}
nav a {
  text-decoration: none;
  color: var(--muted);
  font-size: 14px
}
nav a:hover,a.text-link:hover {
  color: var(--signal)
}
.brand {
  display: inline-flex;
  gap: 12px;
  align-items: center;
  text-decoration: none;
  font: 700 27px var(--mono);
  letter-spacing: -1px
}
.face {
  display: inline-block;
  position: relative;
  flex: none;
  width: 48px;
  height: 48px;
  background: var(--signal);
  clip-path: polygon(0 0,41px 0,48px 7px,48px 100%,0 100%)
}
.face i,.face b,.face em {
  position: absolute;
  background: var(--on-signal)
}
.face i,.face b {
  top: 15px;
  width: 7px;
  height: 9px
}
.face i {
  left: 13px
}
.face b {
  left: 28px
}
.face em {
  left: 17px;
  top: 31px;
  width: 14px;
  height: 3px
}
.brand .face {
  width: 24px;
  height: 24px;
  clip-path: polygon(0 0,20px 0,24px 4px,24px 100%,0 100%)
}
.brand .face i,.brand .face b {
  top: 7px;
  width: 3px;
  height: 4px
}
.brand .face i {
  left: 6px
}
.brand .face b {
  left: 13px
}
.brand .face em {
  left: 8px;
  top: 16px;
  width: 7px;
  height: 2px
}
main {
  max-width: 1120px;
  margin: auto;
  padding: 0 40px
}
h1,h2,p {
  margin-top: 0
}
h1 {
  font-size: clamp(36px,6.5vw,76px);
  line-height: 1.18;
  letter-spacing: -.04em;
  margin-bottom: 28px;
  font-weight: 650
}
h2 {
  font-size: 24px;
  line-height: 1.4;
  letter-spacing: -.02em
}
h1 span {
  color: var(--signal)
}
p {
  color: var(--muted)
}
.eyebrow {
  display: block;
  font: 12px/1.5 var(--mono);
  letter-spacing: .13em;
  color: var(--signal);
  margin-bottom: 26px
}
.hero {
  position: relative;
  padding: 88px 0 96px
}
.hero .lead {
  max-width: 620px
}
.lead {
  font-size: 19px;
  line-height: 1.8;
  max-width: 700px
}
.actions {
  display: flex;
  gap: 20px;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 28px
}
.button,.secondary {
  display: inline-block;
  padding: 12px 20px;
  line-height: 1.5;
  text-align: center;
  text-decoration: none;
  font-weight: 600;
  border: 1px solid var(--signal);
  color: var(--on-signal);
  background: var(--signal)
}
.button {
  clip-path: polygon(0 0,calc(100% - 8px) 0,100% 8px,100% 100%,0 100%)
}
.button:hover {
  background: #d7ff7a
}
.secondary {
  background: transparent;
  border-color: var(--muted);
  color: var(--ink)
}
.secondary:hover {
  border-color: var(--signal);
  color: var(--signal)
}
.text-link {
  font-size: 15px
}
.hero-stamp {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 56px;
  font: 12px/1.8 var(--mono);
  color: var(--muted)
}
.hero-stamp strong {
  font-weight: 400;
  color: var(--ink)
}
.steps {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-bottom: 64px;
  gap: 30px;
  padding: 40px 0
}
.steps .eyebrow {
  color: var(--muted);
  margin-bottom: 18px
}
.steps p {
  font-size: 15px;
  margin-bottom: 0
}
.panel {
  border: 1px solid var(--line);
  background: var(--surface);
  padding: 36px;
  margin: 0 0 64px
}
.panel h2 {
  font-size: 28px
}
.command {
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 16px;
  border: 1px solid var(--line);
  background: var(--bg)
}
code {
  font: 13px/1.7 var(--mono);
  overflow-wrap: anywhere;
  flex: 1;
  color: var(--signal)
}
.command button {
  white-space: nowrap;
  font-size: 13px;
  padding: 8px 12px
}
.small {
  font-size: 13px;
  line-height: 1.8;
  max-width: 720px;
  margin-top: 18px
}
.muted {
  color: var(--muted);
  font-size: 14px
}
details {
  margin-top: 24px;
  border-top: 1px solid var(--line);
  padding-top: 24px;
  font-size: 14px;
  color: var(--muted)
}
summary {
  color: var(--ink);
  cursor: pointer
}
details p {
  margin-top: 18px
}
footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  padding-top: 30px;
  padding-bottom: 36px
}
footer .brand {
  font-size: 20px
}
footer .brand .face {
  display: none
}
.invite-hero {
  padding: 72px 0 56px;
  max-width: 820px
}
.invite-hero>.face {
  margin-bottom: 26px
}
.invite-hero h1 {
  font-size: clamp(32px,5vw,52px);
  overflow-wrap: anywhere
}
.invite-hero dl {
  display: flex;
  gap: 36px;
  margin-top: 28px;
  flex-wrap: wrap
}
dt {
  font-size: 12px;
  color: var(--muted)
}
dd {
  margin: 6px 0 0;
  font: 14px/1.7 var(--mono);
  overflow-wrap: anywhere
}
.legal {
  max-width: 760px;
  margin: 64px auto 80px
}
.legal h1 {
  font-size: 44px
}
.legal h2 {
  margin-top: 40px;
  font-size: 22px
}
.notice {
  border-left: 3px solid var(--signal);
  background: var(--raised);
  padding: 20px;
  font-size: 15px
}
.legal p {
  line-height: 1.95
}
#handoff-status {
  color: var(--ink)
}
@media(max-width:700px) {
  header,footer {
    padding: 20px 24px
  }
  main {
    padding: 0 24px
  }
  .hero {
    padding: 60px 0
  }
  .hero h1 {
    font-size: clamp(36px,8vw,56px)
  }
  .steps {
    grid-template-columns: 1fr;
    gap: 32px;
    margin-bottom: 36px
  }
  .panel {
    padding: 24px;
    margin-bottom: 40px
  }
  .panel h2 {
    font-size: 24px
  }
  .command {
    align-items: stretch;
    flex-direction: column
  }
  .command button {
    align-self: flex-start
  }
  .lead {
    font-size: 17px
  }
  footer {
    align-items: flex-start;
    flex-wrap: wrap
  }
  footer>span {
    display: none
  }
  .invite-hero {
    padding-top: 48px
  }
  .legal {
    margin-top: 44px
  }
  .legal h1 {
    font-size: 36px
  }
}
@media(prefers-reduced-motion:reduce) {
  html {
    scroll-behavior: auto
  }
}
/* The same four modes as the desktop login illustration; explicit controls, no auto-play. */
.launch-hero { display:grid; grid-template-columns:1fr 1fr; gap:36px; align-items:center; padding:76px 0 80px }
.launch-hero h1 { font-size:clamp(36px,4.3vw,58px) }
.launch-hero .lead { font-size:17px; max-width:480px }
.work-scene { margin:0; border:1px solid var(--line); background:var(--surface); min-width:0; padding:22px 18px 18px }
.scene-heading { display:flex; justify-content:space-between; gap:12px; font-size:13px; color:var(--muted) }
.scene-heading .eyebrow { font-size:10px; margin:0 }
.work-scene svg { display:block; width:100%; height:auto; margin:14px 0 }
.work-scene svg text { fill:var(--ink); font:14px var(--sans) }
.scene-input rect,.scene-card { fill:var(--raised); stroke:var(--line) }
.scene-line,.scene-feedback { fill:none; stroke:var(--signal); stroke-width:2 }
.scene-feedback { stroke-dasharray:4 6; opacity:.3 }
.scene-acky>path { fill:var(--signal) }
.scene-features { fill:var(--on-signal) }
.scene-track { stroke:var(--line); stroke-width:5 }
.scene-progress { stroke:var(--signal); stroke-width:5; opacity:.45 }
.scene-modes { display:grid; grid-template-columns:repeat(4,1fr); gap:4px }
.scene-modes button { border:1px solid var(--line); background:transparent; color:var(--muted); padding:9px 4px; font-size:12px }
.scene-modes button[aria-pressed=true] { border-color:var(--signal); color:var(--signal); background:var(--raised) }
.work-scene figcaption { min-height:44px; margin:16px 0 0; font-size:13px; color:var(--muted) }
[data-mode=coordinate] .scene-progress { opacity:1 }
[data-mode=review] .scene-feedback { stroke:#bd9bff; opacity:1; stroke-dasharray:none }
[data-mode=review] .scene-card { stroke:#bd9bff }
[data-mode=watch] .scene-card { stroke:#f7c66a }
[data-mode=watch] .scene-feedback { stroke:#f7c66a; opacity:1 }
@media(max-width:900px) { .launch-hero { grid-template-columns:1fr; padding:52px 0; gap:28px } .work-scene { max-width:590px; width:100% } }
@media(max-width:400px) { header,footer { padding:18px 16px } main { padding:0 16px } .work-scene { padding:16px 10px } .scene-heading .eyebrow { display:none } .panel { padding:20px } }