:root {
  --ground: #f2f5f0;
  --ground-2: #e8ede6;
  --ink: #1b2420;
  --ink-2: #4b5751;
  --muted: #7b867f;
  --line: #d6ddd4;
  --line-strong: #b9c4bb;
  --green: #25695a;
  --green-ink: #174c40;
  --green-soft: #dfeae3;
  --term: #17201c;
  --term-2: #1f2a25;
  --term-text: #e6ece7;
  --term-dim: #8b978f;
  --term-line: #2c3832;
  --bad: #b0412e;

  --codex: #3a63c9;
  --claude: #b8741a;
  --grok: #7a55c8;
  --gemini: #b53e7c;
  --human: #25695a;

  --sans: 'Hanken Grotesk', 'Helvetica Neue', Arial, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --measure: 62ch;
  --page: 1160px;
  --gutter: clamp(20px, 5vw, 64px);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    --ground: #121917;
    --ground-2: #19221e;
    --ink: #e4eae5;
    --ink-2: #b4bfb8;
    --muted: #7f8b84;
    --line: #26312c;
    --line-strong: #364540;
    --green: #5fb39c;
    --green-ink: #8ed0bc;
    --green-soft: #1b312a;
    --term: #0d1210;
    --term-2: #141b18;
    --term-line: #24302a;
    --codex: #7f9ff0;
    --claude: #e0a24a;
    --grok: #ad92ea;
    --gemini: #e07ab5;
    --human: #5fb39c;
    --bad: #e2725d;
  }
}
:root[data-theme='dark'] {
  --ground: #121917;
  --ground-2: #19221e;
  --ink: #e4eae5;
  --ink-2: #b4bfb8;
  --muted: #7f8b84;
  --line: #26312c;
  --line-strong: #364540;
  --green: #5fb39c;
  --green-ink: #8ed0bc;
  --green-soft: #1b312a;
  --term: #0d1210;
  --term-2: #141b18;
  --term-line: #24302a;
  --codex: #7f9ff0;
  --claude: #e0a24a;
  --grok: #ad92ea;
  --gemini: #e07ab5;
  --human: #5fb39c;
  --bad: #e2725d;
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  font-synthesis: none;
}
a {
  color: var(--green);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
  text-underline-offset: 0.18em;
}
:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
  border-radius: 2px;
}
::selection {
  background: #b8dbca;
  color: #132e23;
}
code {
  font-family: var(--mono);
  font-size: 0.86em;
  background: var(--ground-2);
  padding: 0.08em 0.38em;
  border-radius: 4px;
}
pre {
  margin: 0;
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.6;
}
pre code {
  background: none;
  padding: 0;
  font-size: inherit;
}
h1,
h2,
h3 {
  margin: 0;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.15;
}
h1 {
  font-size: clamp(40px, 5.6vw, 66px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.02;
}
h2 {
  font-size: clamp(28px, 3.2vw, 38px);
  letter-spacing: -0.02em;
  margin-bottom: 28px;
}
h3 {
  font-size: 19px;
  margin-bottom: 8px;
}
p {
  margin: 0 0 1em;
}

.skip {
  position: absolute;
  left: -999px;
  top: 8px;
  background: var(--ink);
  color: var(--ground);
  padding: 8px 12px;
}
.skip:focus {
  left: 8px;
  z-index: 10;
}

/* header */
.top {
  max-width: var(--page);
  margin: 0 auto;
  padding: 22px var(--gutter) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 700;
  font-size: 21px;
  letter-spacing: -0.02em;
}
.wordmark:hover {
  text-decoration: none;
}
.top nav {
  display: flex;
  gap: 26px;
  font-size: 15px;
  font-weight: 500;
}
.top nav a {
  color: var(--ink-2);
}
.top nav a:hover {
  color: var(--ink);
}

/* hero */
.hero {
  max-width: var(--page);
  margin: 0 auto;
  padding: clamp(56px, 8vw, 104px) var(--gutter) 40px;
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: start;
}
.hero-copy {
  max-width: 34rem;
}
.hero h1 {
  margin-bottom: 26px;
}
.lede {
  font-size: 19px;
  line-height: 1.5;
  color: var(--ink);
}
.lede.quiet {
  color: var(--ink-2);
}
.fine {
  font-size: 14px;
  color: var(--muted);
  margin: 12px 0 0;
}

.cmd {
  position: relative;
  margin-top: 24px;
  background: var(--term);
  color: var(--term-text);
  border-radius: 8px;
}
.cmd pre {
  color: var(--term-text);
  padding: 14px 96px 14px 18px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.copy {
  position: absolute;
  top: 10px;
  right: 10px;
  font: 500 13px var(--sans);
  color: var(--term-text);
  background: var(--term-2);
  border: 1px solid var(--term-line);
  border-radius: 6px;
  padding: 5px 10px;
  cursor: pointer;
}
.copy:hover {
  border-color: var(--term-dim);
}
.copy.done {
  color: #9fd8c3;
}

/* terminal */
.term {
  margin: 0;
  background: var(--term);
  color: var(--term-text);
  border-radius: 10px;
  border: 1px solid var(--term-line);
  box-shadow: 0 24px 60px -30px rgba(23, 32, 28, 0.5);
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 1.55;
  min-height: 520px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.term-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--term-line);
  color: var(--term-dim);
  font-size: 12.5px;
}
.term-title {
  color: var(--term-text);
  font-weight: 600;
}
.replay {
  margin-left: auto;
  font: 500 12px var(--sans);
  color: var(--term-text);
  background: var(--term-2);
  border: 1px solid var(--term-line);
  border-radius: 6px;
  padding: 4px 9px;
  cursor: pointer;
}
.term-body {
  padding: 12px 16px 14px;
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
}
.term-meta {
  color: var(--term-dim);
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.strip {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 0;
  color: var(--term-dim);
  font-size: 12.5px;
  margin: 4px 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--term-line);
}
.strip span + span::before {
  content: '│';
  margin: 0 12px;
  color: var(--term-line);
}
.strip b {
  font-weight: 600;
}
.strip i {
  font-style: normal;
}
.strip [data-agent].busy i {
  color: var(--term-text);
}
.strip [data-agent].busy i::after {
  content: '…';
}
.transcript {
  flex: 1;
  white-space: pre-wrap;
  word-break: break-word;
}
.msg {
  margin-bottom: 14px;
}
.msg .head {
  font-weight: 600;
}
.msg .body {
  padding-left: 2ch;
  color: var(--term-text);
}
.msg .deliv {
  padding-left: 2ch;
  color: var(--term-dim);
  font-size: 12.5px;
}
.msg .deliv span + span::before {
  content: '   ';
  white-space: pre;
}
.msg .deliv .rationale {
  color: var(--term-dim);
}
.msg.streaming .body::after {
  content: '▍';
  color: var(--term-dim);
}
.divider {
  color: var(--term-dim);
  font-size: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
}
.divider::before {
  content: '─';
}
.divider::after {
  content: '';
  flex: 1;
  border-top: 1px solid var(--term-line);
}
.composer {
  padding: 8px 0 4px;
  display: flex;
  align-items: baseline;
  gap: 1ch;
  min-height: 2.4em;
}
.prompt {
  color: var(--human);
  font-weight: 600;
  white-space: nowrap;
}
.composer .draft {
  white-space: pre-wrap;
}
.caret {
  display: inline-block;
  width: 0.6ch;
  height: 1.1em;
  background: var(--term-text);
  vertical-align: text-bottom;
  animation: blink 1.1s steps(1) infinite;
}
.hint {
  color: var(--term-dim);
  font-size: 11.5px;
}
@keyframes blink {
  50% {
    opacity: 0;
  }
}

/* participant colours, everywhere */
[data-agent='codex'] {
  --p: var(--codex);
}
[data-agent='claude'] {
  --p: var(--claude);
}
[data-agent='grok'] {
  --p: var(--grok);
}
[data-agent='gemini'] {
  --p: var(--gemini);
}
[data-agent='human'] {
  --p: var(--human);
}
.strip [data-agent] b,
.msg[data-agent] .head,
.msg .deliv span[data-agent] b,
.b-msg[data-agent] .b-head b,
.b-deliv [data-agent] {
  color: var(--p);
}
.a-codex {
  color: var(--codex) !important;
}
.a-claude {
  color: var(--claude) !important;
}
.a-gemini {
  color: var(--gemini) !important;
}
.tag {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--p);
}

/* sections */
.section {
  max-width: var(--page);
  margin: 0 auto;
  padding: clamp(56px, 7vw, 96px) var(--gutter) 0;
}
.section + .section {
  border-top: 0;
}
.section::before {
  content: '';
  display: block;
  border-top: 1px solid var(--line);
  margin-bottom: clamp(48px, 6vw, 80px);
}
.hero + .section::before {
  margin-top: 24px;
}
.wide {
  max-width: var(--measure);
  font-size: 18px;
  color: var(--ink-2);
}
.prose {
  max-width: 36rem;
}
.prose p {
  color: var(--ink-2);
}
.cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 40px;
  max-width: 100%;
}
.cols p {
  color: var(--ink-2);
  font-size: 16px;
}
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: start;
}

/* delivery states */
.delivery {
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px dashed var(--line-strong);
}
.delivery-intro {
  max-width: var(--measure);
  color: var(--ink-2);
  font-size: 16px;
}
.states {
  list-style: none;
  padding: 0;
  margin: 24px 0 8px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 0;
  font-family: var(--mono);
  font-size: 14px;
}
.states > li {
  display: inline-flex;
  align-items: center;
}
.states > li + li::before {
  content: '';
  width: 28px;
  border-top: 1px solid var(--line-strong);
}
.states > li > span,
.states .fork span {
  padding: 6px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--ground-2);
}
.states .fork {
  gap: 8px;
  flex-wrap: wrap;
}
.states .fork::before {
  margin-right: 0;
}
.states .fork span:first-child {
  margin-left: 0;
}
.states .ok {
  color: var(--green-ink);
  background: var(--green-soft) !important;
  border-color: transparent !important;
}
.states .bad {
  color: var(--bad);
}

/* browser preview */
.browser {
  margin-top: 32px;
  display: grid;
  grid-template-columns: 232px minmax(0, 1fr);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: #fff;
  color: #292f2d;
  font-size: 13px;
  line-height: 1.45;
  min-height: 420px;
}
:root[data-theme='dark'] .browser {
  border-color: var(--line-strong);
}
.browser aside {
  background: #f0f2ee;
  border-right: 1px solid #e1e6df;
  padding: 18px 14px;
}
.b-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 16px;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.b-ws {
  border: 1px solid #e1e6df;
  border-radius: 8px;
  background: #fafbf9;
  padding: 9px 10px;
  margin-bottom: 18px;
}
.b-ws small {
  display: block;
  color: #778078;
  font-size: 11px;
}
.b-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-bottom: 22px;
  color: #778078;
}
.b-nav span {
  padding: 7px 10px;
  border-radius: 6px;
}
.b-nav .on {
  color: #25695a;
  background: #e2eae1;
  font-weight: 600;
}
.b-agents {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.b-agent {
  display: grid;
  grid-template-columns: 10px 1fr;
  grid-template-areas: 'dot name' 'dot state' 'dot meter' 'dot ctx';
  column-gap: 8px;
  padding: 9px 10px;
  border: 1px solid #e1e6df;
  border-radius: 8px;
  background: #fff;
}
.b-agent .dot {
  grid-area: dot;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--p);
  margin-top: 6px;
}
.b-agent strong {
  color: var(--p);
}
.b-agent small {
  display: block;
  color: #778078;
  font-size: 11px;
}
.b-agent em {
  grid-area: state;
  font-style: normal;
  font-size: 12px;
  margin-top: 4px;
}
.b-agent meter {
  grid-area: meter;
  width: 100%;
  height: 6px;
  margin-top: 6px;
}
.b-agent .ctx {
  grid-area: ctx;
  margin-top: 3px;
}
.b-main {
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.b-toolbar {
  display: flex;
  gap: 8px;
  padding: 12px 18px;
  border-bottom: 1px solid #e1e6df;
}
.b-toolbar span {
  border: 1px solid #e1e6df;
  border-radius: 7px;
  padding: 5px 11px;
  background: #fff;
}
.b-toolbar .right {
  margin-left: auto;
}
.b-msgs {
  flex: 1;
  padding: 18px 22px 8px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.b-msg p {
  margin: 4px 0;
  max-width: 62ch;
}
.b-msg code {
  background: #f4f6f2;
}
.b-head {
  font-size: 12.5px;
  color: #778078;
}
.b-head b {
  font-size: 13.5px;
}
.b-deliv {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
  font-size: 12px;
  color: #778078;
  margin-top: 4px;
}
.b-msg.draft p::after {
  content: '▍';
  color: #778078;
}
.b-composer {
  margin: 12px 18px 18px;
  border: 1px solid #e1e6df;
  border-radius: 9px;
  background: #fafbf9;
  padding: 10px 12px;
  display: flex;
  gap: 12px;
}
.b-composer > span {
  color: #25695a;
  font-weight: 600;
}
.b-caret {
  display: inline-block;
  width: 1px;
  height: 1em;
  background: #292f2d;
  vertical-align: text-bottom;
  animation: blink 1.1s steps(1) infinite;
}

/* yaml */
.yaml {
  background: var(--term);
  color: var(--term-text);
  border-radius: 8px;
  padding: 18px 20px;
  overflow-x: auto;
}
.yaml .k {
  color: #9fd8c3;
}
.yaml .off {
  color: #e0a24a;
}
.perm .yaml {
  margin-bottom: 18px;
}
.perm-list {
  list-style: none;
  padding: 0;
  margin: 0 0 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 15.5px;
  color: var(--ink-2);
}
.perm-list b {
  font-family: var(--mono);
  font-size: 13.5px;
  color: var(--ink);
  display: inline-block;
  min-width: 9.5ch;
}

/* tables */
.table-wrap {
  margin-top: 48px;
  overflow-x: auto;
}
.split .table-wrap {
  margin-top: 0;
}
.table-wrap + .wide {
  margin-top: 28px;
}
table {
  border-collapse: collapse;
  width: 100%;
  font-size: 15.5px;
}
caption {
  text-align: left;
  font-weight: 600;
  padding-bottom: 12px;
  color: var(--ink);
}
th,
td {
  text-align: left;
  padding: 11px 16px 11px 0;
  border-bottom: 1px solid var(--line);
  vertical-align: baseline;
}
.providers {
  min-width: 640px;
}
th {
  font-weight: 600;
  color: var(--muted);
  font-size: 14px;
}
td:last-child,
th:last-child {
  padding-right: 0;
}
.commands td:first-child {
  white-space: nowrap;
  width: 1%;
}
.versions td:last-child {
  font-family: var(--mono);
  font-size: 14px;
  text-align: right;
}

/* steps */
.steps {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}
.steps > li {
  counter-increment: step;
  position: relative;
  padding-left: 40px;
  margin-bottom: 28px;
}
.steps > li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  color: var(--ink);
  font-size: 13px;
  font-weight: 600;
  display: grid;
  place-items: center;
}
.steps > li > span {
  display: block;
  color: var(--ink-2);
}
.steps .cmd {
  margin-top: 12px;
}

/* footer */
.foot {
  max-width: var(--page);
  margin: clamp(72px, 9vw, 120px) auto 0;
  padding: 32px var(--gutter) 48px;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 40px;
  font-size: 15px;
  color: var(--ink-2);
}
.foot p {
  max-width: 52ch;
  margin: 0;
}
.foot nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* responsive */
@media (max-width: 1000px) {
  .hero {
    grid-template-columns: 1fr;
  }
  .hero-copy {
    max-width: 40rem;
  }
  .cols {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .split {
    grid-template-columns: 1fr;
  }
  .browser {
    grid-template-columns: 1fr;
  }
  .browser aside {
    border-right: 0;
    border-bottom: 1px solid #e1e6df;
  }
  .b-agents {
    flex-direction: row;
    flex-wrap: wrap;
  }
  .b-agent {
    flex: 1 1 160px;
  }
  .foot {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 600px) {
  body {
    font-size: 16px;
  }
  .top nav {
    gap: 16px;
    font-size: 14px;
  }
  .top nav a:nth-child(1) {
    display: none;
  }
  .term {
    min-height: 460px;
    font-size: 12.5px;
  }
  .b-toolbar span:not(.right) {
    padding: 5px 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .caret,
  .b-caret {
    animation: none;
  }
}