/* ─────────────── tokens: light is the complete set ─────────────── */
:root {
  --ink:        #0E1620;
  --ink-2:      #3A4859;
  --ink-3:      #67788D;
  --rule:       #D2DAE3;
  --rule-soft:  #E4EAF0;
  --ground:     #F2F5F8;
  --surface:    #FFFFFF;
  --surface-2:  #E9EEF3;
  --surface-3:  #DFE6ED;

  --accent:     #B0561F;
  --accent-ink: #8C4318;
  --accent-soft:#F7E7DC;

  --ok:         #0F7355;
  --ok-soft:    #DCEFE7;
  --wait:       #2F5FA8;
  --wait-soft:  #DEE8F7;
  --stop:       #A32338;
  --stop-soft:  #F8DEE3;

  --shadow:     0 1px 2px rgba(14,22,32,.06), 0 8px 24px -12px rgba(14,22,32,.18);

  --serif: "Iowan Old Style", "Charter", "Bitstream Charter", "Palatino Linotype", Georgia, serif;
  --sans: ui-sans-serif, -apple-system, "Segoe UI", system-ui, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", "JetBrains Mono", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ink:        #E7EDF4;
    --ink-2:      #AEBCCC;
    --ink-3:      #7E8DA1;
    --rule:       #2A343F;
    --rule-soft:  #202932;
    --ground:     #0F151B;
    --surface:    #161E26;
    --surface-2:  #1D2731;
    --surface-3:  #26323E;

    --accent:     #E0894C;
    --accent-ink: #EFA774;
    --accent-soft:#3A2415;

    --ok:         #48C89C;
    --ok-soft:    #11332A;
    --wait:       #78A8EF;
    --wait-soft:  #16273E;
    --stop:       #F0778A;
    --stop-soft:  #3A1A22;

    --shadow:     0 1px 2px rgba(0,0,0,.4), 0 10px 28px -14px rgba(0,0,0,.7);
  }
}
:root[data-theme="dark"] {
  --ink:        #E7EDF4;
  --ink-2:      #AEBCCC;
  --ink-3:      #7E8DA1;
  --rule:       #2A343F;
  --rule-soft:  #202932;
  --ground:     #0F151B;
  --surface:    #161E26;
  --surface-2:  #1D2731;
  --surface-3:  #26323E;

  --accent:     #E0894C;
  --accent-ink: #EFA774;
  --accent-soft:#3A2415;

  --ok:         #48C89C;
  --ok-soft:    #11332A;
  --wait:       #78A8EF;
  --wait-soft:  #16273E;
  --stop:       #F0778A;
  --stop-soft:  #3A1A22;

  --shadow:     0 1px 2px rgba(0,0,0,.4), 0 10px 28px -14px rgba(0,0,0,.7);
}

/* ─────────────── document ─────────────── */
* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap { width: min(1120px, 100% - 3rem); margin-inline: auto; }
.col  { width: min(68ch, 100%); }

a { color: var(--accent-ink); text-decoration-thickness: 1px; text-underline-offset: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 3px; }

.eyebrow {
  font-family: var(--mono);
  font-size: .69rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 0 .75rem;
}

/* ── nav ── */
.nav {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--ground) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule);
}
.nav__in { display: flex; align-items: center; gap: 1.5rem; height: 56px; }
.nav__mark {
  font-family: var(--mono); font-size: .78rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--ink); font-weight: 600;
  display: flex; align-items: center; gap: .55rem;
}
.nav__dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.nav__links { display: flex; gap: 1.35rem; margin-left: auto; }
.nav__links a {
  font-family: var(--sans); font-size: .82rem; color: var(--ink-2);
  text-decoration: none; padding: .3rem 0; border-bottom: 2px solid transparent;
}
.nav__links a:hover { color: var(--ink); border-bottom-color: var(--accent); }

/* ── masthead ── */
.mast { padding: 5.5rem 0 3.5rem; border-bottom: 1px solid var(--rule); }
.mast h1 {
  font-size: clamp(2.6rem, 6vw, 4.1rem);
  line-height: 1.02; letter-spacing: -.022em;
  margin: 0 0 1.5rem; text-wrap: balance; font-weight: 600;
}
.mast .lede { font-size: 1.24rem; color: var(--ink-2); margin: 0 0 2rem; }
.mast .lede strong { color: var(--ink); font-weight: 600; }
.mast__meta {
  display: flex; flex-wrap: wrap; gap: 2.25rem;
  padding-top: 1.75rem; border-top: 1px solid var(--rule-soft);
  font-family: var(--sans);
}
.mast__meta dt {
  font-family: var(--mono); font-size: .66rem; letter-spacing: .13em;
  text-transform: uppercase; color: var(--ink-3); margin-bottom: .3rem;
}
.mast__meta dd { margin: 0; font-size: .92rem; color: var(--ink); font-weight: 500; }

/* ── sections ── */
section { padding: 4.5rem 0; border-bottom: 1px solid var(--rule); }
section:last-of-type { border-bottom: 0; }

h2 {
  font-size: clamp(1.75rem, 3.4vw, 2.35rem);
  line-height: 1.14; letter-spacing: -.016em;
  margin: 0 0 1.1rem; font-weight: 600; text-wrap: balance;
}
h3 {
  font-size: 1.2rem; margin: 2.75rem 0 .7rem;
  letter-spacing: -.008em; font-weight: 600; text-wrap: balance;
}
h4 {
  font-family: var(--sans); font-size: .86rem; font-weight: 650;
  letter-spacing: .01em; margin: 1.75rem 0 .5rem; color: var(--ink);
}
p { margin: 0 0 1.1rem; }
.dek { font-size: 1.06rem; color: var(--ink-2); }

ul.plain { margin: 0 0 1.1rem; padding-left: 1.15rem; }
ul.plain li { margin-bottom: .45rem; }

code {
  font-family: var(--mono); font-size: .855em;
  background: var(--surface-2); padding: .1em .38em;
  border-radius: 4px; color: var(--ink);
}

pre {
  font-family: var(--mono); font-size: .8rem; line-height: 1.65;
  background: var(--surface); color: var(--ink-2);
  border: 1px solid var(--rule); border-radius: 9px;
  padding: 1.1rem 1.25rem; overflow-x: auto; margin: 0 0 1.4rem;
}
pre code { background: none; padding: 0; font-size: inherit; }
pre .k { color: var(--accent-ink); }
pre .c { color: var(--ink-3); font-style: italic; }

/* ── tables ── */
.tw { overflow-x: auto; margin: 0 0 1.6rem; border: 1px solid var(--rule); border-radius: 9px; background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-family: var(--sans); font-size: .855rem; }
th {
  text-align: left; font-family: var(--mono); font-size: .64rem;
  letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3);
  font-weight: 500; padding: .8rem 1rem; border-bottom: 1px solid var(--rule);
  white-space: nowrap;
}
td { padding: .82rem 1rem; border-bottom: 1px solid var(--rule-soft); color: var(--ink-2); vertical-align: top; }
tr:last-child td { border-bottom: 0; }
td strong { color: var(--ink); font-weight: 600; }
td.num { font-variant-numeric: tabular-nums; white-space: nowrap; }

/* ── callout ── */
.note {
  border-left: 2px solid var(--accent);
  background: var(--accent-soft);
  padding: 1rem 1.25rem; border-radius: 0 8px 8px 0;
  margin: 0 0 1.4rem; font-size: .96rem; color: var(--ink-2);
}
.note strong { color: var(--ink); }

/* ── architecture diagram ── */
.arch {
  display: grid; gap: 1rem; margin: 2rem 0 1.6rem;
  grid-template-columns: 1fr auto 1fr;
  align-items: stretch;
  font-family: var(--sans);
}
@media (max-width: 820px) { .arch { grid-template-columns: 1fr; } }

.arch__panel {
  background: var(--surface); border: 1px solid var(--rule);
  border-radius: 11px; padding: 1.15rem 1.25rem 1.25rem;
  display: flex; flex-direction: column; gap: .55rem;
}
.arch__panel--edge { border-color: var(--accent); }
.arch__cap {
  font-family: var(--mono); font-size: .63rem; letter-spacing: .13em;
  text-transform: uppercase; color: var(--ink-3);
}
.arch__panel--edge .arch__cap { color: var(--accent-ink); }
.arch__title { font-size: 1rem; font-weight: 650; color: var(--ink); margin-bottom: .2rem; }
.arch__row {
  display: flex; align-items: center; gap: .55rem;
  font-size: .83rem; color: var(--ink-2);
  padding: .42rem .6rem; background: var(--surface-2);
  border-radius: 6px;
}
.arch__row b { color: var(--ink); font-weight: 600; }
.arch__tag {
  font-family: var(--mono); font-size: .6rem; letter-spacing: .06em;
  color: var(--ink-3); margin-left: auto; text-transform: uppercase;
}
.arch__foot {
  margin-top: auto; padding-top: .7rem; font-size: .8rem;
  color: var(--ink-3); border-top: 1px dashed var(--rule);
}
.arch__panel--edge .arch__foot { color: var(--accent-ink); font-weight: 500; }

.arch__flow {
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; gap: .5rem; padding: 0 .4rem;
  min-width: 130px;
}
.arch__flow span {
  font-family: var(--mono); font-size: .6rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--ink-3); text-align: center;
}
.arch__arrow { color: var(--ink-3); }
@media (max-width: 820px) { .arch__arrow { transform: rotate(90deg); } }

/* ── phases ── */
.phases { display: flex; flex-direction: column; gap: 0; margin: 1.75rem 0 0; }
.phase {
  display: grid; grid-template-columns: 3.25rem 1fr; gap: 1.25rem;
  padding: 1.35rem 0; border-top: 1px solid var(--rule);
}
.phase:last-child { border-bottom: 1px solid var(--rule); }
.phase__n {
  font-family: var(--mono); font-size: .72rem; letter-spacing: .06em;
  color: var(--accent-ink); padding-top: .28rem; font-variant-numeric: tabular-nums;
}
.phase__b h4 { margin: 0 0 .35rem; font-size: 1.02rem; font-family: var(--serif); font-weight: 600; }
.phase__b p { margin: 0 0 .5rem; font-size: .94rem; color: var(--ink-2); }
.phase__b ul { margin: .5rem 0 0; padding-left: 1.1rem; font-size: .91rem; color: var(--ink-2); }
.phase__b li { margin-bottom: .3rem; }
.phase--later { opacity: .72; }
.phase__pill {
  display: inline-block; font-family: var(--mono); font-size: .58rem;
  letter-spacing: .1em; text-transform: uppercase; padding: .16rem .45rem;
  border-radius: 4px; margin-left: .5rem; vertical-align: 2px;
  background: var(--wait-soft); color: var(--wait);
}

/* ═══════════════ MOCKUPS ═══════════════ */
.frame {
  border: 1px solid var(--rule); border-radius: 11px; overflow: hidden;
  background: var(--surface); box-shadow: var(--shadow); margin: 0 0 1rem;
}
.frame__bar {
  display: flex; align-items: center; gap: .7rem;
  padding: .6rem .85rem; background: var(--surface-2);
  border-bottom: 1px solid var(--rule);
}
.frame__dots { display: flex; gap: 5px; flex: none; }
.frame__dots i { width: 9px; height: 9px; border-radius: 50%; background: var(--surface-3); display: block; }
.frame__url {
  flex: 1; font-family: var(--mono); font-size: .68rem; color: var(--ink-3);
  background: var(--surface); border: 1px solid var(--rule);
  padding: .25rem .6rem; border-radius: 5px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.frame__body { font-family: var(--sans); font-size: 14px; line-height: 1.5; color: var(--ink); }

.cap {
  font-family: var(--sans); font-size: .84rem; color: var(--ink-3);
  margin: 0 0 2.75rem; padding-left: .1rem;
}
.cap b { color: var(--ink-2); font-weight: 600; }

/* app chrome inside mockups */
.a-top {
  display: flex; align-items: center; gap: 1rem;
  padding: .8rem 1.15rem; border-bottom: 1px solid var(--rule);
  background: var(--surface);
}
.a-brand { display: flex; align-items: center; gap: .5rem; font-weight: 650; font-size: .88rem; letter-spacing: -.01em; }
.a-brand i { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); display: block; flex: none; }
.a-tabs { display: flex; gap: .25rem; margin-left: 1rem; }
.a-tabs a {
  font-size: .8rem; color: var(--ink-3); text-decoration: none;
  padding: .3rem .6rem; border-radius: 6px;
}
.a-tabs a.on { color: var(--ink); background: var(--surface-2); font-weight: 600; }
.a-right { margin-left: auto; display: flex; align-items: center; gap: .7rem; }
.a-avatar {
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--accent-soft); color: var(--accent-ink);
  display: grid; place-items: center; font-size: .68rem; font-weight: 700; flex: none;
}
.a-who { font-size: .78rem; color: var(--ink-2); }

.a-body { padding: 1.35rem 1.4rem 1.6rem; background: var(--ground); }
.a-h {
  display: flex; align-items: flex-end; gap: 1rem;
  margin-bottom: 1.1rem; flex-wrap: wrap;
}
.a-h h5 { margin: 0; font-family: var(--sans); font-size: 1.08rem; font-weight: 650; letter-spacing: -.012em; }
.a-h p { margin: .2rem 0 0; font-size: .8rem; color: var(--ink-3); font-family: var(--sans); }

/* chips */
.chip {
  display: inline-flex; align-items: center; gap: .35rem;
  font-size: .68rem; font-weight: 600; padding: .2rem .5rem;
  border-radius: 5px; white-space: nowrap; letter-spacing: .01em;
}
.chip i { width: 6px; height: 6px; border-radius: 50%; background: currentColor; display: block; flex: none; }
.chip--ok   { background: var(--ok-soft);   color: var(--ok); }
.chip--wait { background: var(--wait-soft); color: var(--wait); }
.chip--off  { background: var(--surface-3); color: var(--ink-3); }
.chip--stop { background: var(--stop-soft); color: var(--stop); }

/* buttons */
.btn {
  font-family: var(--sans); font-size: .8rem; font-weight: 600;
  padding: .48rem .95rem; border-radius: 7px; border: 1px solid transparent;
  cursor: pointer; display: inline-flex; align-items: center; gap: .4rem;
  background: var(--surface); color: var(--ink-2); border-color: var(--rule);
}
.btn--go { background: var(--accent); color: #fff; border-color: var(--accent); }
:root[data-theme="dark"] .btn--go { color: #1B1006; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .btn--go { color: #1B1006; } }
.btn--quiet { background: transparent; }
.btn--danger { color: var(--stop); border-color: var(--rule); background: var(--surface); }
.btn--wide { width: 100%; justify-content: center; padding: .6rem 1rem; }
.btn[disabled] { opacity: .45; cursor: not-allowed; }

/* cards */
.card {
  background: var(--surface); border: 1px solid var(--rule);
  border-radius: 10px; padding: 1rem 1.1rem;
}
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: .85rem; }

/* lab card */
.lab { display: flex; flex-direction: column; gap: .7rem; position: relative; }
.lab--live { border-color: var(--ok); }
.lab__top { display: flex; align-items: flex-start; gap: .7rem; }
.lab__ico {
  width: 34px; height: 34px; border-radius: 8px; flex: none;
  background: var(--surface-2); display: grid; place-items: center;
  font-family: var(--mono); font-size: .62rem; font-weight: 700; color: var(--ink-2);
  letter-spacing: -.02em;
}
.lab__name { font-weight: 650; font-size: .92rem; letter-spacing: -.01em; }
.lab__mode { font-size: .73rem; color: var(--ink-3); margin-top: .1rem; }
.lab__meta {
  display: flex; flex-wrap: wrap; gap: .3rem .9rem;
  font-size: .73rem; color: var(--ink-3);
  padding-top: .6rem; border-top: 1px dashed var(--rule);
  font-variant-numeric: tabular-nums;
}
.lab__meta b { color: var(--ink-2); font-weight: 600; }

/* stat tiles */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(148px, 1fr)); gap: .7rem; margin-bottom: 1.1rem; }
.stat { background: var(--surface); border: 1px solid var(--rule); border-radius: 9px; padding: .8rem .9rem; }
.stat__k {
  font-family: var(--mono); font-size: .59rem; letter-spacing: .11em;
  text-transform: uppercase; color: var(--ink-3); margin-bottom: .3rem;
}
.stat__v {
  font-size: 1.75rem; font-weight: 600; letter-spacing: -.028em;
  font-variant-numeric: tabular-nums; line-height: 1;
}
.stat__s { font-size: .71rem; color: var(--ink-3); margin-top: .3rem; }
.stat__s b { font-weight: 600; }

/* meters */
.meter { display: flex; flex-direction: column; gap: .3rem; }
.meter__h { display: flex; justify-content: space-between; font-size: .73rem; color: var(--ink-3); }
.meter__h b { color: var(--ink); font-weight: 600; font-variant-numeric: tabular-nums; }
.meter__t { height: 6px; background: var(--surface-3); border-radius: 3px; overflow: hidden; }
.meter__f { height: 100%; border-radius: 3px; background: var(--accent); }
.meter__f--ok { background: var(--ok); }

/* progress (image pull) */
.pull { display: flex; flex-direction: column; gap: .55rem; }
.pull__t { height: 7px; background: var(--surface-3); border-radius: 4px; overflow: hidden; }
.pull__f {
  height: 100%; width: 68%; border-radius: 4px; background: var(--accent);
  background-image: linear-gradient(115deg, rgba(255,255,255,.28) 25%, transparent 25% 50%, rgba(255,255,255,.28) 50% 75%, transparent 75%);
  background-size: 18px 18px;
  animation: slide 1s linear infinite;
}
@keyframes slide { to { background-position: 18px 0; } }
@media (prefers-reduced-motion: reduce) { .pull__f { animation: none; } }
.pull__rows { display: flex; flex-direction: column; gap: .3rem; font-family: var(--mono); font-size: .68rem; color: var(--ink-3); }
.pull__rows div { display: flex; justify-content: space-between; gap: 1rem; }
.pull__rows b { color: var(--ok); font-weight: 500; }

/* login */
.login { padding: 3rem 1.4rem; background: var(--ground); display: grid; place-items: center; }
.login__card {
  width: min(360px, 100%); background: var(--surface);
  border: 1px solid var(--rule); border-radius: 12px;
  padding: 1.9rem 1.7rem; box-shadow: var(--shadow);
}
.login__mark { display: flex; align-items: center; gap: .5rem; margin-bottom: 1.4rem; }
.login__mark i { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); display: block; }
.login__mark span { font-family: var(--mono); font-size: .68rem; letter-spacing: .13em; text-transform: uppercase; color: var(--ink-3); }
.login__card h6 { margin: 0 0 .3rem; font-family: var(--sans); font-size: 1.3rem; font-weight: 650; letter-spacing: -.02em; }
.login__card > p { margin: 0 0 1.5rem; font-size: .82rem; color: var(--ink-3); font-family: var(--sans); }

.field { margin-bottom: .85rem; }
.field label {
  display: block; font-size: .72rem; font-weight: 600;
  color: var(--ink-2); margin-bottom: .32rem; letter-spacing: .01em;
}
.input {
  width: 100%; padding: .55rem .7rem; font-size: .84rem; font-family: var(--sans);
  border: 1px solid var(--rule); border-radius: 7px;
  background: var(--surface); color: var(--ink);
}
.input--ph { color: var(--ink-3); }
.input--mono { font-family: var(--mono); font-size: .78rem; }
select.input { appearance: none; background-image: none; }
.hint { font-size: .7rem; color: var(--ink-3); margin-top: .3rem; }

/* steps */
.steps { display: flex; flex-direction: column; gap: 0; }
.step { display: grid; grid-template-columns: 1.6rem 1fr; gap: .75rem; padding: .75rem 0; border-top: 1px solid var(--rule-soft); }
.step:first-child { border-top: 0; padding-top: 0; }
.step__n {
  width: 1.35rem; height: 1.35rem; border-radius: 50%;
  background: var(--surface-2); color: var(--ink-2);
  display: grid; place-items: center; font-size: .68rem; font-weight: 700;
  font-family: var(--mono); flex: none;
}
.step--done .step__n { background: var(--ok-soft); color: var(--ok); }
.step--now .step__n { background: var(--accent); color: #fff; }
:root[data-theme="dark"] .step--now .step__n { color: #1B1006; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .step--now .step__n { color: #1B1006; } }
.step__t { font-size: .84rem; font-weight: 600; margin-bottom: .12rem; }
.step__d { font-size: .77rem; color: var(--ink-3); }

/* token box */
.token {
  display: flex; align-items: center; gap: .6rem;
  background: var(--surface-2); border: 1px dashed var(--rule);
  border-radius: 7px; padding: .55rem .7rem; margin-top: .6rem;
}
.token code { background: none; padding: 0; font-size: .78rem; color: var(--ink); letter-spacing: .02em; flex: 1; overflow: hidden; text-overflow: ellipsis; }

/* mock tables */
.mt { width: 100%; border-collapse: collapse; font-size: .8rem; font-family: var(--sans); }
.mt th {
  font-family: var(--mono); font-size: .59rem; letter-spacing: .11em;
  padding: .55rem .8rem; color: var(--ink-3); border-bottom: 1px solid var(--rule);
}
.mt td { padding: .62rem .8rem; border-bottom: 1px solid var(--rule-soft); color: var(--ink-2); }
.mt tr:last-child td { border-bottom: 0; }
.mt td b { color: var(--ink); font-weight: 600; }
.mt .num { font-variant-numeric: tabular-nums; white-space: nowrap; }
.mtw { background: var(--surface); border: 1px solid var(--rule); border-radius: 10px; overflow: hidden; }
.mtw--scroll { overflow-x: auto; }

/* countdown */
.cd {
  display: flex; align-items: baseline; gap: .4rem;
  font-variant-numeric: tabular-nums;
}
.cd b { font-size: 1.6rem; font-weight: 600; letter-spacing: -.03em; }
.cd span { font-size: .75rem; color: var(--ink-3); }

.split { display: grid; grid-template-columns: 1.35fr 1fr; gap: .85rem; }
@media (max-width: 700px) { .split { grid-template-columns: 1fr; } }

.foot { padding: 3rem 0 4rem; font-family: var(--sans); font-size: .8rem; color: var(--ink-3); }