:root {
  --ledger: #c9d4c6;
  --ledger-deep: #b7c5b3;
  --ledger-pale: #e4ebe1;
  --paper: #f4f1e8;
  --paper-white: #fbf8f1;
  --ink: #2a312c;
  --ink-soft: #3d4740;
  --muted: #5f6b63;
  --line: rgba(42, 49, 44, .16);
  --rule: #8aa38a;
  --carbon-pink: #e8a8b0;
  --carbon-pink-deep: #c97984;
  --canary: #f3d66a;
  --canary-deep: #d4b445;
  --manila: #ead9b0;
  --ribbon: #b33a3a;
  --shadow: 8px 12px 0 rgba(42, 49, 44, .08);
  --mono: "IBM Plex Mono", "Courier New", ui-monospace, monospace;
  --sans: "IBM Plex Sans", "Segoe UI", sans-serif;
  --pad: clamp(18px, 4.2vw, 64px);
  --header: 74px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    repeating-linear-gradient(
      180deg,
      transparent 0 27px,
      rgba(138, 163, 138, .18) 27px 28px
    ),
    var(--ledger-pale);
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.58;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; color: inherit; }
button, select { cursor: pointer; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 {
  font-family: var(--mono);
  font-weight: 600;
  letter-spacing: -.03em;
  line-height: 1.15;
}
h1 { margin-bottom: 16px; font-size: clamp(1.85rem, 4.8vw, 3.35rem); }
h2 { max-width: 22ch; margin-bottom: 10px; font-size: clamp(1.45rem, 3.2vw, 2.15rem); }
h3 { margin-bottom: 8px; font-size: 1.05rem; }
img { max-width: 100%; }
[hidden] { display: none !important; }
address { font-style: normal; }

.skip-link {
  position: fixed;
  z-index: 1000;
  top: -80px;
  left: 16px;
  padding: 10px 14px;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 13px;
}
.skip-link:focus { top: 12px; }

.tab-kicker {
  margin: 0 0 10px;
  color: var(--carbon-pink-deep);
  font-family: var(--mono);
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.col-no {
  color: var(--rule);
  font-family: var(--mono);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -.06em;
  line-height: .9;
}
.section {
  position: relative;
  padding: 72px var(--pad);
  scroll-margin-top: 88px;
}
.section-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1.15fr) minmax(210px, .7fr);
  gap: 22px 36px;
  align-items: start;
  margin-bottom: 36px;
}
.section-head > p { color: var(--muted); margin: 0; }
.section-head.compact { grid-template-columns: auto 1fr; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 20px;
  min-height: var(--header);
  padding: 8px var(--pad);
  background: color-mix(in srgb, var(--ledger-pale) 90%, white);
  border-bottom: 3px double var(--ink);
  backdrop-filter: blur(12px);
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  width: max-content;
}
.file-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 28px;
  margin-top: 8px;
  background: var(--manila);
  color: var(--ink);
  font-family: var(--mono);
  font-size: .78rem;
  font-weight: 700;
  clip-path: polygon(10% 0, 90% 0, 100% 100%, 0 100%);
  box-shadow: 0 10px 0 var(--paper);
}
.brand-copy strong,
.brand-copy small { display: block; }
.brand-copy strong {
  font-family: var(--mono);
  font-size: 1rem;
  letter-spacing: .08em;
}
.brand-copy small {
  color: var(--muted);
  font-size: .72rem;
}
.desktop-nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 2px;
}
.desktop-nav a {
  padding: 6px 9px;
  border: 1px solid transparent;
  font-family: var(--mono);
  font-size: .72rem;
  font-weight: 500;
}
.desktop-nav a:hover,
.desktop-nav a.active {
  border-color: var(--ink);
  background: var(--canary);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.lang-switch {
  display: flex;
  border: 1px solid var(--ink);
}
.lang-btn {
  width: 42px;
  height: 32px;
  border: 0;
  background: transparent;
  font-family: var(--mono);
  font-size: .76rem;
  font-weight: 700;
}
.lang-btn.active {
  color: var(--paper);
  background: var(--ink);
}
.menu-toggle {
  display: none;
  width: 42px;
  height: 36px;
  border: 1px solid var(--ink);
  background: var(--paper);
}
.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  background: var(--ink);
  transition: .2s;
}
.menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(7px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-7px) rotate(-45deg); }
.mobile-menu {
  position: fixed;
  inset: var(--header) 0 0;
  z-index: 99;
  padding: 18px 22px 40px;
  background: var(--ledger-pale);
  overflow: auto;
  border-top: 1px solid var(--line);
}
.mobile-menu a {
  display: block;
  padding: 16px 4px;
  border-bottom: 1px dashed var(--line);
  font-family: var(--mono);
  font-size: 1.2rem;
  font-weight: 600;
}

.hero {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: clamp(24px, 5vw, 60px);
  align-items: center;
  min-height: calc(100vh - var(--header));
  padding: 40px var(--pad) 56px;
}
.hero-lead {
  max-width: 42rem;
  color: var(--ink-soft);
  font-size: clamp(1.02rem, 1.4vw, 1.16rem);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  margin: 26px 0 24px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--mono);
  font-size: .84rem;
  font-weight: 600;
  letter-spacing: .04em;
}
.button.primary {
  background: var(--ribbon);
  border-color: var(--ribbon);
  color: #fff;
}
.button:hover { box-shadow: 4px 4px 0 var(--ink); }
.mail-link {
  padding-bottom: 2px;
  border-bottom: 2px solid var(--ribbon);
  font-family: var(--mono);
  font-weight: 600;
  color: var(--ribbon);
}
.hero-facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
  background: var(--paper-white);
  border: 1px solid var(--ink);
}
.hero-facts div {
  padding: 12px 14px;
  border-right: 1px solid var(--line);
}
.hero-facts div:last-child { border-right: 0; }
.hero-facts dt {
  color: var(--muted);
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.hero-facts dd {
  margin: 4px 0 0;
  font-family: var(--mono);
  font-weight: 600;
}

.desk-scene {
  position: relative;
  min-height: 430px;
  padding: 18px 18px 14px;
  background:
    linear-gradient(180deg, var(--ledger) 0 72px, #cbb892 72px 86px, #d7c49a 86px);
  border: 1px solid var(--ink);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.file-rail {
  display: flex;
  gap: 8px;
  padding-left: 8px;
}
.hang-tab {
  display: grid;
  place-items: center;
  min-width: 86px;
  padding: 7px 10px 9px;
  background: var(--manila);
  text-align: center;
  clip-path: polygon(8% 0, 92% 0, 100% 100%, 0 100%);
  box-shadow: 0 10px 0 rgba(42, 49, 44, .08);
}
.hang-tab.green { background: #a8c4a6; }
.hang-tab.pink { background: var(--carbon-pink); }
.hang-tab.yellow { background: var(--canary); }
.hang-tab b {
  font-family: var(--mono);
  font-size: .78rem;
}
.hang-tab small {
  font-size: .68rem;
  letter-spacing: .03em;
}
.carbon-stack {
  position: relative;
  height: 290px;
  margin-top: 18px;
}
.copy-sheet {
  position: absolute;
  width: min(86%, 340px);
  min-height: 210px;
  padding: 16px 18px;
  border: 1px solid var(--ink);
}
.copy-sheet.yellow {
  top: 42px;
  left: 46px;
  background: var(--canary);
  transform: rotate(3.2deg);
}
.copy-sheet.pink {
  top: 24px;
  left: 24px;
  background: var(--carbon-pink);
  transform: rotate(1.4deg);
}
.copy-sheet.original {
  top: 4px;
  left: 6px;
  min-height: 250px;
  background:
    repeating-linear-gradient(
      180deg,
      var(--paper-white) 0 23px,
      rgba(138, 163, 138, .28) 23px 24px
    );
}
.copy-sheet.yellow span,
.copy-sheet.pink span {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .12em;
}
.sheet-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
  font-family: var(--mono);
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .08em;
}
.sheet-lines {
  margin: 0;
  padding: 0;
  list-style: none;
}
.sheet-lines li {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 10px;
  padding: 6px 0;
  border-top: 1px dotted var(--line);
  font-size: .92rem;
}
.sheet-lines b { font-family: var(--mono); color: var(--ribbon); }
.sheet-stamp {
  margin: 16px 0 0;
  color: var(--ribbon);
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .12em;
}
.scene-note {
  margin: 12px 4px 0;
  color: var(--ink-soft);
  font-size: .88rem;
}

.scope {
  display: grid;
  grid-template-columns: auto 1.2fr .8fr;
  gap: 28px;
  align-items: start;
  background: color-mix(in srgb, var(--ledger) 42%, transparent);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.scope-copy p { margin-bottom: 0; color: var(--ink-soft); }
.scope-chips,
.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.scope-chips li,
.chip-row li {
  padding: 6px 10px;
  background: var(--paper);
  border: 1px solid var(--ink);
  font-family: var(--mono);
  font-size: .78rem;
}

.code-grid,
.note-grid,
.people-grid {
  display: grid;
  gap: 12px;
}
.code-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); margin-bottom: 28px; }
.code-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.note-grid.three,
.people-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.note-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.code-card,
.note-grid article,
.people-grid article,
.two-notes article,
.ledger-card,
.notice-card,
.builder-form,
.builder-output,
.contact-form,
.faq-list details {
  background: var(--paper-white);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.code-card,
.note-grid article,
.people-grid article,
.two-notes article,
.ledger-card,
.notice-card {
  padding: 18px 18px 16px;
}
.code-card.primary {
  background:
    linear-gradient(90deg, var(--canary) 0 8px, var(--paper-white) 8px);
}
.code-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
  font-family: var(--mono);
  font-weight: 700;
}
.code-meta span,
.people-grid span,
.ledger-card > span,
.notice-card > span {
  color: var(--carbon-pink-deep);
  font-family: var(--mono);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .1em;
}
.code-card p,
.note-grid p,
.people-grid p,
.two-notes p { color: var(--muted); margin-bottom: 0; }
.code-card a {
  display: inline-block;
  margin-top: 12px;
  color: var(--ribbon);
  font-family: var(--mono);
  font-size: .8rem;
  font-weight: 600;
}

.split-body {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 28px;
  align-items: start;
}
.plain-list {
  margin: 0;
  padding-left: 1.15rem;
  color: var(--ink-soft);
}
.plain-list li + li { margin-top: 8px; }
.plain-list.numbered { padding-left: 1.3rem; }
.ledger-card dl { margin: 14px 0 0; }
.ledger-card div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 0;
  border-top: 1px dashed var(--line);
  font-size: .95rem;
}
.ledger-card dt { color: var(--muted); }
.two-notes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.notice-card.pink { background: color-mix(in srgb, var(--carbon-pink) 35%, var(--paper-white)); }
.notice-card.yellow { background: color-mix(in srgb, var(--canary) 40%, var(--paper-white)); }
.press .chip-row,
#tech .chip-row { margin-top: 16px; }
.step-row,
.process-line {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.step-row { grid-template-columns: repeat(3, 1fr); }
.process-line { grid-template-columns: repeat(5, 1fr); margin-bottom: 32px; }
.process-line.four { grid-template-columns: repeat(4, 1fr); }
.step-row li,
.process-line li {
  padding: 16px;
  background: var(--paper-white);
  border-top: 6px solid var(--carbon-pink);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.step-row b,
.note-grid.four b,
.process-line b {
  display: inline-block;
  margin-bottom: 10px;
  color: var(--ribbon);
  font-family: var(--mono);
}
.docs,
.mixed,
.faq { background: color-mix(in srgb, var(--ledger) 28%, transparent); }

.builder-layout {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 20px;
}
.builder-form,
.builder-output,
.contact-form { padding: 22px; }
fieldset {
  margin: 0 0 16px;
  padding: 0;
  border: 0;
}
legend,
.field > span,
.contact-form label > span {
  display: block;
  margin-bottom: 8px;
  font-family: var(--mono);
  font-size: .84rem;
  font-weight: 600;
}
.choice-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.choice-grid label {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  padding: 10px 12px;
  border: 1px solid var(--line);
  background: #fff;
}
.choice-grid input { margin-top: 3px; accent-color: var(--ribbon); }
.field { display: block; margin-bottom: 12px; }
input[type="text"],
input[type="email"],
textarea,
select {
  width: 100%;
  padding: 11px 12px;
  border: 1px solid var(--ink);
  border-radius: 0;
  background: #fff;
}
.output-head {
  display: flex;
  justify-content: space-between;
  margin-bottom: 12px;
  color: var(--ribbon);
  font-family: var(--mono);
  font-weight: 700;
  letter-spacing: .08em;
}
pre {
  min-height: 230px;
  margin: 0 0 14px;
  padding: 14px;
  overflow: auto;
  background:
    repeating-linear-gradient(
      180deg,
      var(--paper-white) 0 21px,
      rgba(138, 163, 138, .22) 21px 22px
    );
  border: 1px dashed var(--ink);
  white-space: pre-wrap;
  font-family: var(--mono);
  font-size: .86rem;
}
.output-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.output-actions button,
.output-actions a {
  min-height: 40px;
  padding: 0 14px;
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--ink);
  background: #fff;
  font-family: var(--mono);
  font-size: .8rem;
  font-weight: 600;
}
.output-actions a.disabled { opacity: .45; pointer-events: none; }
.builder-output p { color: var(--muted); font-size: .9rem; }
.builder-output .plain-list { margin: 0 0 14px; }
.contact-form label { display: block; margin-bottom: 12px; }
.contact-form .consent { display: flex; margin-bottom: 16px; }

.registry-sheet {
  display: grid;
  grid-template-columns: 1.4fr .6fr;
  gap: 18px;
  margin-top: 28px;
}
.registry-sheet dl {
  display: grid;
  gap: 0;
  margin: 0;
  background: var(--paper-white);
  border: 1px solid var(--ink);
}
.registry-sheet dl div {
  display: grid;
  grid-template-columns: .78fr 1.22fr;
  gap: 14px;
  padding: 11px 14px;
  border-top: 1px solid var(--line);
}
.registry-sheet dl div:first-child { border-top: 0; }
.registry-sheet dt {
  color: var(--muted);
  font-family: var(--mono);
  font-size: .82rem;
}
.registry-stamp {
  display: grid;
  place-content: center;
  text-align: center;
  min-height: 220px;
  background:
    repeating-linear-gradient(180deg, transparent 0 17px, rgba(201, 121, 132, .2) 17px 18px),
    var(--carbon-pink);
  border: 1px solid var(--ink);
  color: var(--ink);
  font-family: var(--mono);
}
.registry-stamp b { font-size: 1.7rem; }
.people-grid article b,
.people-grid h3 { font-family: var(--mono); }
.people-follow { margin-top: 18px; }
.contact-side {
  display: grid;
  gap: 12px;
  align-content: start;
}
.contact-people {
  margin: 12px 0 18px;
  font-family: var(--mono);
  font-size: .92rem;
}
.faq-list { display: grid; gap: 8px; }
.faq-list details { padding: 2px 16px; box-shadow: none; }
.faq-list summary {
  padding: 14px 0;
  font-family: var(--mono);
  font-weight: 600;
  cursor: pointer;
}
.faq-list p { color: var(--muted); }

.contact {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 24px;
  background: color-mix(in srgb, var(--canary) 22%, transparent);
}
.contact-email {
  display: inline-block;
  margin: 8px 0 16px;
  color: var(--ribbon);
  font-family: var(--mono);
  font-size: clamp(1.35rem, 3vw, 2rem);
  font-weight: 700;
}
.contact-copy p,
.contact-copy address { color: var(--ink-soft); }
.consent {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin: 8px 0 16px;
}
.form-status { min-height: 1.4em; color: var(--ribbon); }

footer {
  display: grid;
  grid-template-columns: 1fr 1.4fr auto;
  gap: 20px;
  align-items: start;
  padding: 26px var(--pad) 34px;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--mono);
  font-size: .86rem;
}
footer span,
footer p { color: #d5ddd4; }
footer a { color: var(--canary); font-weight: 700; }
footer strong { display: block; margin-bottom: 4px; letter-spacing: .08em; }

@media (max-width: 1100px) {
  .section-head,
  .hero,
  .scope,
  .split-body,
  .builder-layout,
  .registry-sheet,
  .contact,
  footer {
    grid-template-columns: 1fr;
  }
  .code-grid,
  .code-grid.two,
  .note-grid.four,
  .process-line,
  .process-line.four,
  .hero-facts {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 760px) {
  .desktop-nav { display: none; }
  .menu-toggle { display: block; }
  .site-header {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px;
    padding: 8px 12px;
  }
  .brand { min-width: 0; }
  .brand-copy small { display: none; }
  .lang-btn { width: 36px; height: 28px; }
  .hero-facts,
  .code-grid,
  .code-grid.two,
  .note-grid.three,
  .note-grid.four,
  .people-grid,
  .two-notes,
  .step-row,
  .process-line,
  .process-line.four,
  .choice-grid {
    grid-template-columns: 1fr;
  }
  .copy-sheet { width: 88%; }
  h2 { max-width: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .menu-toggle span { transition: none; }
}