html[data-page="collaborate"] {
  --on-night: #ffffff;
}

html[data-page="collaborate"][data-theme="dark"] {
  --on-night: #f5f1e8;
}

html[data-page="collaborate"] .site-header { background: var(--fog); }

.collab-hero {
  min-height: calc(100svh - 70px);
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr);
  align-items: center;
  gap: clamp(45px, 8vw, 130px);
  padding-block: clamp(72px, 10vw, 145px);
}

.collab-hero h1 {
  max-width: 920px;
  margin: 0;
  font: 780 clamp(3.8rem, 7.4vw, 8rem) / .86 var(--display);
  letter-spacing: -.075em;
}

.collab-hero-lede {
  max-width: 700px;
  margin: 34px 0 0;
  color: var(--ink-soft);
  font-size: clamp(1.08rem, 1.55vw, 1.36rem);
  line-height: 1.5;
}

.collab-signal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 46px;
  color: var(--muted);
  font: 600 .66rem / 1.2 var(--utility);
  letter-spacing: .11em;
}

.collab-signal b {
  color: var(--coral-dark);
  font: 700 1.1rem / 1 var(--display);
}

.collab-hero-note {
  position: relative;
  overflow: hidden;
  padding: clamp(30px, 4vw, 54px);
  border: 1px solid var(--ink);
  border-radius: 18px;
  background: var(--night);
  color: var(--on-night);
  box-shadow: var(--shadow);
  transform: rotate(2.2deg);
}

.collab-hero-note::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 10px;
  background: var(--coral);
}

.collab-note-label {
  margin: 0 0 34px;
  color: var(--coral);
  font: 600 .66rem / 1.2 var(--utility);
  letter-spacing: .11em;
  text-transform: uppercase;
}

.collab-note-question {
  max-width: 14ch;
  margin: 0;
  font: 720 clamp(1.85rem, 3.4vw, 3.6rem) / .96 var(--display);
  letter-spacing: -.05em;
}

.collab-note-rule {
  width: 64px;
  height: 4px;
  margin: 35px 0 25px;
  background: var(--coral);
  transform: rotate(-4deg);
}

.collab-note-answer {
  max-width: 32ch;
  margin: 0;
  color: var(--on-night);
  font: 400 1rem / 1.58 var(--body);
  opacity: .88;
}

.collab-offers { border-top: 1px solid var(--rule); background: var(--paper); }
.collab-offer-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.collab-offer-grid--single { grid-template-columns: minmax(0, 1fr); max-width: 920px; }
.collab-offer {
  --offer-accent: var(--coral);
  min-height: 510px;
  display: flex;
  flex-direction: column;
  padding: clamp(27px, 4vw, 50px);
  border: 1px solid var(--rule);
  border-top: 8px solid var(--offer-accent);
  border-radius: 12px;
  background: var(--fog);
  transition: transform .25s ease, box-shadow .25s ease;
}
.collab-offer--support { --offer-accent: var(--cobalt); background: var(--night); color: var(--on-night); }
.collab-offer:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.collab-offer-top { display: flex; justify-content: space-between; gap: 18px; align-items: center; }
.collab-offer-index { color: var(--offer-accent); font: 700 .75rem / 1 var(--utility); }
.collab-offer-kind { color: var(--muted); font: 600 .62rem / 1.2 var(--utility); letter-spacing: .08em; text-align: right; text-transform: uppercase; }
.collab-offer--support .collab-offer-kind { color: var(--on-night); }
.collab-offer h3 { max-width: 16ch; margin: 68px 0 0; font: 740 clamp(2.25rem, 4vw, 4.8rem) / .9 var(--display); letter-spacing: -.06em; }
.collab-offer > p { max-width: 52ch; margin: 25px 0 0; color: var(--ink-soft); font-size: 1.02rem; line-height: 1.55; }
.collab-offer--support > p { color: var(--on-night); }
.collab-offer ul { display: grid; gap: 10px; margin: 27px 0 0; padding: 0; list-style: none; }
.collab-offer li { position: relative; padding-left: 25px; color: var(--ink-soft); font-size: .92rem; line-height: 1.45; }
.collab-offer li::before { content: "→"; position: absolute; left: 0; color: var(--offer-accent); font: 700 1rem / 1 var(--display); }
.collab-text-link { display: inline-flex; align-items: center; gap: 12px; min-height: 44px; margin-top: auto; color: var(--ink); font: 700 .78rem / 1.4 var(--utility); text-underline-offset: 5px; }
.collab-text-link:hover { color: var(--offer-accent); }
.collab-offer--support .collab-text-link { color: var(--on-night); }
.collab-amount-line { display: flex; flex-wrap: wrap; align-items: baseline; gap: 9px; margin-top: 38px; color: var(--on-night); font: 700 clamp(1.45rem, 2.5vw, 2.5rem) / 1 var(--display); letter-spacing: -.04em; }
.collab-amount-line span { padding: 10px 12px; border: 1px solid var(--rule); border-radius: 7px; }
.collab-amount-line small { margin-left: 4px; color: var(--on-night); font: 600 .62rem / 1 var(--utility); letter-spacing: .1em; }
.collab-small-note { margin-top: 24px !important; font-size: .88rem !important; }

.collab-machine { overflow: hidden; border-top: 1px solid var(--rule); background: var(--coral); }
.collab-machine-heading { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr); gap: 50px; align-items: end; margin-bottom: 60px; }
.collab-machine-heading .section-label { color: var(--on-action); }
.collab-machine-heading h2 { max-width: 900px; margin: 0; font: 760 clamp(3rem, 6.2vw, 7rem) / .86 var(--display); letter-spacing: -.065em; }
.collab-machine-heading > p { max-width: 510px; margin: 0; color: var(--on-action); font-size: 1.02rem; line-height: 1.52; }
.collab-machine-grid { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(290px, .88fr); gap: 18px; align-items: stretch; }
.collab-route-list { display: grid; gap: 10px; }
.collab-route { position: relative; display: grid; grid-template-columns: minmax(220px, .9fr) minmax(0, 1fr) 30px; gap: 22px; align-items: center; min-height: 93px; padding: 18px 21px; border: 1px solid var(--ink); border-radius: 8px; background: var(--paper); color: var(--ink); text-decoration: none; }
.collab-route:hover { background: var(--ink); color: var(--on-action); }
.collab-route code { font: 600 .76rem / 1.3 var(--utility); overflow-wrap: anywhere; }
.collab-route span { color: var(--ink-soft); font-size: .9rem; line-height: 1.4; }
.collab-route:hover span { color: var(--on-action); }
.collab-route b { display: grid; width: 30px; height: 30px; place-items: center; border: 1px solid var(--rule); border-radius: 50%; font: 700 .9rem / 1 var(--display); }
.collab-status-box { min-height: 100%; display: flex; flex-direction: column; padding: clamp(26px, 3vw, 42px); border: 1px solid var(--ink); border-radius: 8px; background: var(--night); color: var(--on-night); }
.collab-status-code { color: var(--coral); font: 700 clamp(4rem, 7vw, 7.5rem) / .75 var(--display); letter-spacing: -.08em; }
.collab-status-box h3 { margin: 44px 0 0; font: 720 clamp(1.5rem, 2.6vw, 2.7rem) / .97 var(--display); letter-spacing: -.045em; }
.collab-status-box p { margin: 17px 0 0; color: var(--on-night); font-size: .93rem; line-height: 1.55; }
.collab-status-link { display: inline-flex; align-items: center; gap: 12px; min-height: 44px; margin-top: auto; padding-top: 25px; color: var(--on-night); font: 650 .72rem / 1.4 var(--utility); text-underline-offset: 4px; }
.collab-status-link:hover { color: var(--coral); }

.collab-process { border-top: 1px solid var(--rule); background: var(--fog); }
.collab-steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--rule); }
.collab-steps li { min-height: 260px; display: flex; flex-direction: column; gap: 50px; padding: 24px 25px 30px; border-right: 1px solid var(--rule); }
.collab-steps li:first-child { border-left: 1px solid var(--rule); }
.collab-steps li > span { color: var(--coral-dark); font: 700 .72rem / 1 var(--utility); }
.collab-steps h3 { margin: 0; font: 720 clamp(1.45rem, 2.1vw, 2.25rem) / .98 var(--display); letter-spacing: -.04em; }
.collab-steps p { margin: 14px 0 0; color: var(--ink-soft); font-size: .94rem; line-height: 1.5; }

.collab-close { padding-block: clamp(90px, 13vw, 190px); background: var(--night); color: var(--on-night); }
.collab-close-inner { display: grid; grid-template-columns: .55fr 1.5fr auto; gap: 42px; align-items: end; }
.collab-close .section-label { color: var(--coral); }
.collab-close h2 { max-width: 900px; margin: 0; font: 740 clamp(2.8rem, 6vw, 6.5rem) / .88 var(--display); letter-spacing: -.06em; }
.collab-close .button.light { white-space: nowrap; }

@media (max-width: 900px) {
  .collab-hero { grid-template-columns: minmax(0, 1fr) minmax(250px, .7fr); gap: 35px; }
  .collab-hero h1 { font-size: clamp(3.4rem, 7.5vw, 6rem); }
  .collab-offer h3 { margin-top: 48px; }
  .collab-machine-heading { grid-template-columns: minmax(0, 1fr) minmax(250px, .7fr); }
  .collab-machine-heading h2 { font-size: clamp(2.7rem, 5.3vw, 5rem); }
  .collab-route { grid-template-columns: 1fr; gap: 8px; }
  .collab-route b { position: absolute; top: 17px; right: 18px; }
  .collab-close-inner { grid-template-columns: .45fr 1.4fr auto; gap: 24px; }
}

@media (max-width: 650px) {
  .collab-hero { min-height: auto; grid-template-columns: 1fr; padding-block: 58px 82px; }
  .collab-hero h1 { font-size: clamp(3.25rem, 15vw, 5.6rem); }
  .collab-hero-note { max-width: 500px; margin: 12px 0 0 auto; transform: rotate(1deg); }
  .collab-offer-grid, .collab-machine-grid { grid-template-columns: 1fr; }
  .collab-offer { min-height: 0; }
  .collab-machine-heading { grid-template-columns: 1fr; gap: 25px; margin-bottom: 35px; }
  .collab-machine-heading h2 { font-size: clamp(2.8rem, 13vw, 5rem); }
  .collab-steps { grid-template-columns: 1fr; }
  .collab-steps li, .collab-steps li:first-child { min-height: 0; gap: 32px; border: 0; border-bottom: 1px solid var(--rule); }
  .collab-steps li:first-child { border-top: 1px solid var(--rule); }
  .collab-close-inner { grid-template-columns: 1fr; gap: 24px; }
  .collab-close h2 { font-size: clamp(2.8rem, 13vw, 5.4rem); }
  .collab-close .button { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .collab-offer { transition: none; }
  .collab-offer:hover { transform: none; }
}