/* Coffer landing page. Lacquer palette, Source Serif 4 / IBM Plex. */

:root {
  --ground: #F6F3EE;
  --recess: #E7E1D7;
  --stone: #ECE6DC;
  --surface: #FBF9F4;
  --paper: #FFFFFF;
  --ink: #1E1A17;
  --ink-2: #3E3A34;
  --muted: #5E564D;
  --lacquer: #2A221D;
  --bronze: #A47A4A;
  --owed: #9A5B13;
  --rule: rgba(60, 48, 30, .14);
  --rule-2: rgba(60, 48, 30, .25);
  --serif: "Source Serif 4", Georgia, serif;
  --sans: "IBM Plex Sans", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --gutter: clamp(16px, 4vw, 40px);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font: 400 17px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, p, ul, ol, dl, dd, figure { margin: 0; padding: 0; }
ul, ol { list-style: none; }
a { color: var(--ink); text-decoration-color: var(--bronze); text-underline-offset: 3px; }
:focus-visible { outline: 2px solid var(--lacquer); outline-offset: 3px; border-radius: 2px; }
.num { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.muted { color: var(--muted); }

.wrap { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 var(--gutter); }
.narrow { max-width: 820px; }

h1, h2, h3 { font-family: var(--serif); font-weight: 500; color: var(--ink); letter-spacing: -0.01em; }
h1 { font-size: clamp(36px, 5.6vw, 64px); line-height: 1.06; letter-spacing: -0.02em; }
h2 { font-size: clamp(28px, 3.6vw, 42px); line-height: 1.14; max-width: 24ch; }
h3 { font-size: 22px; line-height: 1.25; }
/* Section mark: one open coffer above each heading that seals when the section scrolls into view
   (same drawing as the hero ceiling, at full strength). */
.seal { display: block; width: 30px; height: 30px; margin-bottom: 26px; }
.seal svg { display: block; overflow: visible; }
.seal .t-frame { fill: transparent; stroke: rgba(42, 34, 29, .45); stroke-width: 1.5; stroke-dasharray: 2.4 2.2; transition: fill .6s ease, stroke .6s ease; }
.seal .t-s1, .seal .t-s2, .seal .t-c {
  transform-box: fill-box; transform-origin: center; opacity: 0; transform: scale(1.4);
  transition: opacity .5s ease, transform .8s cubic-bezier(.2, .8, .2, 1);
}
.seal .t-s1 { fill: none; stroke: var(--lacquer); stroke-width: 1.1; }
.seal .t-s2 { fill: none; stroke: var(--lacquer); stroke-width: 1; transition-delay: .1s; }
.seal .t-c { fill: var(--lacquer); transition-delay: .2s; }
.seal.sealed .t-frame { fill: var(--stone); stroke: var(--lacquer); stroke-dasharray: none; }
.seal.sealed .t-s1, .seal.sealed .t-s2, .seal.sealed .t-c { opacity: 1; transform: scale(1); }
.sec-cta .seal.sealed .t-frame { fill: var(--ground); }
.body-l { font-size: 19px; color: var(--ink-2); max-width: 62ch; margin-top: 22px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 0 22px;
  border-radius: 6px; border: 1px solid transparent;
  font: 500 16px/1 var(--sans); text-decoration: none; cursor: pointer;
  transition: background .15s, border-color .15s, transform .15s;
}
.btn:active { transform: translateY(1px); }
.btn-dark { background: var(--lacquer); color: var(--ground); }
.btn-dark:hover { background: #000; color: #fff; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--rule-2); }
.btn-ghost:hover { border-color: var(--ink); }
.btn-sm { min-height: 40px; padding: 0 16px; font-size: 15px; }
.btn-block { width: 100%; }
.btn[disabled] { opacity: .6; cursor: progress; }

/* ---------- Top: nav + hero over the coffer ceiling ---------- */
.top { position: relative; overflow: hidden; border-bottom: 1px solid var(--rule); }
.nav, .hero, .ceiling-caption { position: relative; z-index: 1; }
.nav {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding-top: 20px; padding-bottom: 20px;
}
.brand { display: inline-flex; align-items: center; gap: 14px; text-decoration: none; }
.brand-mark { display: block; flex: none; }
.brand-word { font: 600 28px/1 var(--serif); letter-spacing: -0.015em; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a:not(.btn) { color: var(--ink-2); text-decoration: none; font-size: 15px; }
.nav-links a:not(.btn):hover { color: var(--ink); text-decoration: underline; text-decoration-color: var(--bronze); }

.hero { padding-top: clamp(56px, 10vw, 120px); padding-bottom: clamp(40px, 6vw, 72px); }
.hero h1, .h2-wide { text-wrap: balance; }
@media (min-width: 1200px) { .hero h1 span, .h2-wide span { display: inline-block; } }
.h2-wide { max-width: none; }
.hero .lede { font-size: clamp(19px, 1.8vw, 23px); color: var(--ink-2); max-width: 52ch; margin-top: 24px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }

.ceiling-caption {
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding-bottom: 22px; font-size: 13px; color: var(--muted);
}
.cap-count { color: var(--ink-2); }

/* The ceiling: a field of coffers that seal on their own. Built by main.js. */
.ceiling {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  -webkit-mask-image: linear-gradient(90deg, rgba(0,0,0,.14) 0%, rgba(0,0,0,.16) 42%, rgba(0,0,0,.6) 75%, rgba(0,0,0,.75) 100%),
                      linear-gradient(180deg, rgba(0,0,0,.5) 0%, #000 22%, #000 70%, rgba(0,0,0,.3) 100%);
  -webkit-mask-composite: source-in;
  mask-image: linear-gradient(90deg, rgba(0,0,0,.14) 0%, rgba(0,0,0,.16) 42%, rgba(0,0,0,.6) 75%, rgba(0,0,0,.75) 100%),
              linear-gradient(180deg, rgba(0,0,0,.5) 0%, #000 22%, #000 70%, rgba(0,0,0,.3) 100%);
  mask-composite: intersect;
}
.tile { position: absolute; display: block; overflow: visible; }
.tile .t-frame { fill: transparent; stroke: rgba(42, 34, 29, .30); stroke-width: 1.2; stroke-dasharray: 2.4 2.2; transition: fill .6s ease, stroke .6s ease; }
.tile .t-s1, .tile .t-s2, .tile .t-c {
  transform-box: fill-box; transform-origin: center;
  opacity: 0; transform: scale(1.35);
  transition: opacity .5s ease, transform .7s cubic-bezier(.2, .8, .2, 1);
}
.tile .t-s1 { fill: none; stroke: rgba(42, 34, 29, .30); stroke-width: 1; }
.tile .t-s2 { fill: none; stroke: rgba(42, 34, 29, .28); stroke-width: .9; transition-delay: .08s; }
.tile .t-c { fill: rgba(42, 34, 29, .30); transition-delay: .16s; }
.tile.sealed .t-frame { fill: rgba(236, 230, 220, .9); stroke: rgba(42, 34, 29, .34); stroke-dasharray: none; }
.tile.sealed .t-s1, .tile.sealed .t-s2, .tile.sealed .t-c { opacity: 1; transform: scale(1); }

/* The logo settles into place once on load */
.brand-mark .m-s1, .brand-mark .m-s2, .brand-mark .m-c { transform-box: fill-box; transform-origin: center; animation: settle .9s cubic-bezier(.2, .8, .2, 1) both; }
.brand-mark .m-s2 { animation-delay: .1s; }
.brand-mark .m-c { animation-delay: .22s; }
@keyframes settle { from { opacity: 0; transform: scale(1.4); } to { opacity: 1; transform: scale(1); } }

@media (prefers-reduced-motion: reduce) {
  .tile *, .seal * { transition: none !important; }
  .brand-mark * { animation: none !important; }
}

/* ---------- Sections ---------- */
.sec { padding: clamp(72px, 10vw, 128px) 0; border-bottom: 1px solid var(--rule); }
.sec-alt { background: var(--surface); }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 32px 56px; margin-top: 32px; max-width: 1000px; }
.two-col p { color: var(--ink-2); font-size: 18px; }

/* Cooperative contract chain */
.chain { margin-top: 64px; }
.chain-nodes { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; }
.chain-nodes li {
  background: var(--paper); border: 1px solid var(--rule); border-radius: 8px;
  padding: 18px 16px; min-width: 0;
}
.chain-nodes li.is-us-edge { background: var(--stone); border-color: var(--rule-2); }
.n-role { display: block; font: 500 18px/1.25 var(--serif); }
.n-desc { display: block; font-size: 14px; color: var(--muted); margin-top: 6px; line-height: 1.45; }

.chain-flows { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); column-gap: 12px; row-gap: 14px; margin-top: 18px; }
.flow { position: relative; height: 34px; font-size: 13px; color: var(--muted); min-width: 0; }
.flow span { position: absolute; left: 0; right: 0; top: 0; text-align: center; line-height: 1.2; }
.flow::before { content: ""; position: absolute; left: 0; right: 0; bottom: 6px; border-top: 1.5px solid var(--rule-2); }
.flow::after { content: ""; position: absolute; bottom: 2px; width: 0; height: 0; border-top: 5px solid transparent; border-bottom: 5px solid transparent; }
/* left-pointing arrows (money/paper flows back up the chain) */
.flow-report::after, .flow-gap::after, .flow-po::after { left: -2px; border-right: 8px solid var(--rule-2); }
.flow-contract::after { right: -2px; border-left: 8px solid var(--rule-2); }

.flow-contract { grid-row: 1; grid-column: 1 / 6; margin: 0 10%; }
.flow-report   { grid-row: 2; grid-column: 2 / 4; margin: 0 25%; }
.flow-gap      { grid-row: 2; grid-column: 3 / 5; margin: 0 25%; color: var(--owed); }
.flow-gap::before { border-top: 1.5px dashed var(--owed); }
.flow-gap::after { border-right-color: var(--owed); }
.flow-po       { grid-row: 2; grid-column: 4 / 6; margin: 0 25%; }

.flow-coffer   { grid-row: 3; grid-column: 3 / 5; margin: 0 25%; height: 40px; }
.flow-coffer::before { top: 0; bottom: auto; height: 12px; border: 1.5px solid var(--lacquer); border-top: 0; border-radius: 0 0 4px 4px; }
.flow-coffer::after { display: none; }
.flow-coffer span { top: 18px; font: 600 15px/1 var(--serif); color: var(--ink); }

.chain figcaption { margin-top: 28px; color: var(--ink-2); max-width: 64ch; font-size: 16px; }

/* Problem cards */
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin-top: 48px; }
.card { background: var(--paper); border: 1px solid var(--rule); border-radius: 10px; padding: 28px; }
.card h3 { margin-bottom: 10px; }
.card p { color: var(--ink-2); font-size: 16px; }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 32px; margin-top: 56px; counter-reset: s; }
.step { border-top: 1.5px solid var(--lacquer); padding-top: 22px; min-width: 0; }
.step-n { display: block; font-size: 13px; color: var(--muted); margin-bottom: 14px; }
.step h3 { margin-bottom: 12px; }
.step p { color: var(--ink-2); font-size: 16px; }

/* Checks ledger */
.ledger { margin-top: 72px; background: var(--paper); border: 1px solid var(--rule); border-radius: 10px; overflow: hidden; }
.ledger-head { padding: 26px 28px; border-bottom: 1px solid var(--rule); display: flex; justify-content: space-between; align-items: baseline; gap: 12px 32px; flex-wrap: wrap; }
.ledger-head p { font-size: 15px; }
.ledger-rows li { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 16px; padding: 15px 28px; border-bottom: 1px solid var(--rule); }
.ledger-rows li:last-child { border-bottom: 0; }
.ledger-rows li:nth-child(even) { background: var(--surface); }
.lr-k { font: 500 14px/1.6 var(--mono); color: var(--ink); }
.lr-v { color: var(--ink-2); font-size: 16px; }

.control { display: flex; gap: 18px; align-items: flex-start; margin-top: 32px; padding: 24px 28px; border-radius: 10px; background: var(--stone); }
.control-mark { flex: none; margin-top: 2px; }
.control p { color: var(--ink-2); font-size: 16px; }
.control strong { color: var(--ink); font-weight: 600; }

/* Audiences */
.audiences { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 48px; }
.aud { background: var(--paper); border: 1px solid var(--rule); border-radius: 10px; padding: 32px; min-width: 0; }
.aud-tag { font: 500 13px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin-bottom: 14px; }
.aud h3 { font-size: 24px; margin-bottom: 20px; max-width: 22ch; }
.ticks li { position: relative; padding-left: 28px; margin-top: 12px; color: var(--ink-2); font-size: 16px; }
.ticks li::before {
  content: ""; position: absolute; left: 0; top: 6px; width: 13px; height: 13px;
  border: 1.5px solid var(--lacquer); border-radius: 2px;
  background: linear-gradient(var(--bronze), var(--bronze)) center / 5px 5px no-repeat;
}
.privacy {
  margin-top: 20px; padding: 28px 32px; border-radius: 10px; background: var(--lacquer); color: var(--ground);
  display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 16px 48px; align-items: center;
}
.privacy h3 { color: var(--ground); font-size: 24px; }
.privacy ul { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px 28px; align-items: stretch; }
.privacy li { display: flex; align-items: center; min-height: 44px; font-size: 16px; font-weight: 500; line-height: 1.35; color: var(--ground); padding-left: 20px; border-left: 1px solid rgba(246, 243, 238, .25); }
@media (max-width: 960px) {
  .privacy { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .privacy { padding: 22px; }
  .privacy ul { grid-template-columns: 1fr; }
}

/* Status */
.status { margin-top: 40px; border-top: 1px solid var(--rule); }
.status > div { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--rule); }
.status dt { font: 500 14px/1.6 var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.status dd { color: var(--ink-2); }

/* CTA + form */
.sec-cta { background: var(--recess); border-bottom: 0; }
.cta-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 420px); gap: 48px 72px; align-items: center; }
.form { background: var(--paper); border: 1px solid var(--rule); border-radius: 12px; padding: 32px; display: grid; gap: 16px; }
.field { display: grid; gap: 7px; min-width: 0; border: 0; padding: 0; margin: 0; }
.field > span, .field legend { font-size: 14px; font-weight: 500; color: var(--ink); padding: 0; }
.field em { font-style: normal; color: var(--muted); font-weight: 400; margin-left: 4px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
input[type=email], input[type=text], textarea {
  width: 100%; font: 400 16px/1.4 var(--sans); color: var(--ink);
  background: var(--surface); border: 1px solid var(--rule-2); border-radius: 6px; padding: 11px 12px;
}
textarea { resize: vertical; min-height: 84px; }
input:focus, textarea:focus { outline: none; border-color: var(--lacquer); box-shadow: 0 0 0 3px rgba(42, 34, 29, .12); background: var(--paper); }
input[aria-invalid=true] { border-color: #A23B2A; }
.roles { display: flex; flex-wrap: wrap; gap: 8px; }
.roles legend { margin-bottom: 9px; width: 100%; }
.roles label {
  display: inline-flex; align-items: center; gap: 8px; cursor: pointer;
  padding: 8px 12px; border: 1px solid var(--rule-2); border-radius: 999px; font-size: 14px; background: var(--surface);
}
.roles label:has(input:checked) { border-color: var(--lacquer); background: var(--stone); }
.roles input { accent-color: var(--lacquer); margin: 0; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-note { font-size: 14px; color: var(--muted); }
.form-note.ok { color: var(--ink); }
.form-note.err { color: #A23B2A; }
.form.done .field, .form.done .field-row, .form.done button { display: none; }
.form.done .form-note { font-size: 17px; }

/* Footer */
.foot { padding: 32px 0 40px; }
.foot-row { display: flex; justify-content: space-between; align-items: center; gap: 12px; font-size: 14px; }
.foot-brand { display: inline-flex; align-items: center; gap: 10px; font: 600 17px/1 var(--serif); }
.foot-note { margin-top: 14px; font-size: 13px; color: var(--muted); }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .cards { grid-template-columns: 1fr; gap: 20px; }
  .steps { grid-template-columns: 1fr 1fr; gap: 36px 32px; }
  .audiences, .cta-grid { grid-template-columns: 1fr; }
  .chain-flows { display: none; }
  .chain-nodes { grid-template-columns: 1fr; gap: 0; }
  .chain-nodes li { border-radius: 0; margin-top: -1px; display: grid; grid-template-columns: minmax(0, 200px) minmax(0, 1fr); gap: 4px 20px; align-items: baseline; }
  .chain-nodes li:first-child { border-radius: 8px 8px 0 0; }
  .chain-nodes li:last-child { border-radius: 0 0 8px 8px; }
  .n-desc { margin-top: 0; }
  .chain-nodes li.is-us-edge + li.is-us-edge { position: relative; }
  .chain-nodes li.is-us-edge + li.is-us-edge::before {
    content: "Coffer sits here"; position: absolute; right: 12px; top: -11px;
    font: 500 12px/1 var(--mono); color: var(--owed); background: var(--paper);
    border: 1px dashed var(--owed); border-radius: 999px; padding: 4px 9px;
  }
}
@media (max-width: 720px) {
  .nav-links a:not(.btn) { display: none; }
  .two-col, .field-row, .steps { grid-template-columns: 1fr; }
  .ledger-rows li { grid-template-columns: 1fr; gap: 2px; padding: 14px 20px; }
  .ledger-head { padding: 22px 20px; }
  .chain-nodes li { grid-template-columns: 1fr; }
  .status > div { grid-template-columns: 1fr; gap: 4px; }
  .aud, .card, .form { padding: 22px; }
  .control { padding: 20px; }
  /* Text covers the whole width on phones, so keep the ceiling quiet everywhere */
  .ceiling {
    -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,.3), rgba(0,0,0,.22) 70%, rgba(0,0,0,.12));
    mask-image: linear-gradient(180deg, rgba(0,0,0,.3), rgba(0,0,0,.22) 70%, rgba(0,0,0,.12));
  }
}
@media (max-width: 420px) {
  .btn-sm { padding: 0 12px; font-size: 14px; }
  .brand-word { font-size: 24px; }
}