:root {
  --ink: #111827;
  --muted: #52606d;
  --line: #dce3e5;
  --soft: #f5f8f7;
  --teal: #0f766e;
  --teal-dark: #0a5d57;
  --teal-light: #d9f1ed;
  --amber: #b7791f;
  --white: #ffffff;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; overflow-x: hidden; background: var(--white); color: var(--ink); font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; font-size: 17px; -webkit-font-smoothing: antialiased; }
main { overflow: hidden; }
a { color: inherit; }
button, input, select, textarea { font: inherit; }
:focus-visible { outline: 3px solid color-mix(in srgb, var(--teal) 34%, transparent); outline-offset: 3px; }

.site-header, main > section, .principles, footer { width: min(var(--max), calc(100% - 48px)); margin-inline: auto; }
.site-header { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 30px; border-bottom: 1px solid var(--line); }
.wordmark { display: inline-flex; align-items: center; gap: 12px; font-size: 16px; font-weight: 700; letter-spacing: -.02em; text-decoration: none; }
.wordmark-mark { width: 35px; height: 35px; display: block; flex: 0 0 35px; }
.wordmark-mark img { display: block; width: 100%; height: 100%; }
.site-header nav { display: flex; align-items: center; gap: 26px; }
.site-header nav a, .footer-links a { color: var(--muted); font-size: 13px; font-weight: 600; text-decoration: none; }
.site-header nav a:hover, .footer-links a:hover { color: var(--teal-dark); }

.eyebrow, .utility-label { margin: 0 0 22px; color: var(--teal-dark); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 11px; font-weight: 700; letter-spacing: .09em; text-transform: uppercase; }
.hero { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(400px, .82fr); gap: clamp(54px, 8vw, 112px); align-items: center; padding-block: 100px 92px; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 730px; margin-bottom: 30px; font-size: clamp(54px, 5.8vw, 78px); font-weight: 620; letter-spacing: -.062em; line-height: .99; }
.hero-lead { max-width: 680px; margin-bottom: 36px; color: var(--muted); font-size: 20px; line-height: 1.65; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 28px; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 48px; min-height: 50px; padding: 0 18px; font-size: 13px; font-weight: 700; text-decoration: none; }
.button-primary { background: var(--ink); color: var(--white); }
.button-primary:hover { background: var(--teal-dark); }
.text-link { color: var(--teal-dark); font-size: 13px; font-weight: 700; text-decoration-thickness: 1px; text-underline-offset: 5px; }

.coordination-ledger { position: relative; padding: 28px; border: 1px solid var(--line); background: var(--soft); box-shadow: 18px 18px 0 var(--teal-light); }
.coordination-ledger::before { content: "POLICY → ACTION → EVIDENCE"; position: absolute; top: -27px; right: 0; color: var(--muted); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 9px; letter-spacing: .08em; }
.ledger-head { display: flex; align-items: flex-start; justify-content: space-between; padding-bottom: 22px; border-bottom: 1px solid var(--ink); }
.ledger-head .utility-label { display: block; margin-bottom: 7px; font-size: 9px; }
.ledger-head strong { font-size: 18px; }
.version { padding: 5px 7px; border: 1px solid var(--line); background: var(--white); color: var(--muted); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 10px; }
.clause { display: grid; grid-template-columns: 64px 1fr; gap: 16px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.clause-id { align-self: start; padding: 5px 7px; background: var(--teal); color: var(--white); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 10px; text-align: center; }
.clause p { margin: 0; font-size: 14px; line-height: 1.55; }
.trail { padding: 20px 0 10px; }
.trail-step { position: relative; display: grid; grid-template-columns: 18px 1fr; gap: 13px; min-height: 54px; }
.trail-step > span { position: relative; z-index: 1; width: 10px; height: 10px; margin: 4px; border: 2px solid var(--teal); border-radius: 50%; background: var(--white); }
.trail-step:not(:last-child)::after { content: ""; position: absolute; top: 14px; bottom: -4px; left: 8px; width: 1px; background: #a9cfc9; }
.trail-step.complete > span { background: var(--teal); box-shadow: inset 0 0 0 2px var(--soft); }
.trail-step.current > span { border-color: var(--amber); box-shadow: 0 0 0 4px #f4e5c9; }
.trail-step small { display: block; margin-bottom: 4px; color: var(--muted); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 9px; letter-spacing: .06em; text-transform: uppercase; }
.trail-step strong { font-size: 13px; font-weight: 650; }
.ledger-foot { display: flex; flex-wrap: wrap; gap: 8px; padding-top: 16px; border-top: 1px solid var(--line); }
.ledger-foot span { padding: 5px 7px; border: 1px solid #b7d8d2; background: var(--white); color: var(--teal-dark); font-size: 9px; font-weight: 700; text-transform: uppercase; }

.principles { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); border-right: 0; }
.principles span { min-height: 76px; display: grid; place-items: center; padding: 18px; border-right: 1px solid var(--line); color: var(--muted); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 10px; font-weight: 700; letter-spacing: .06em; text-align: center; text-transform: uppercase; }

.problem, .human-boundary { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(60px, 10vw, 150px); padding-block: 118px; border-bottom: 1px solid var(--line); }
.problem h2, .section-heading h2, .human-boundary h2, .pilot h2 { margin-bottom: 0; font-size: clamp(42px, 4.7vw, 64px); font-weight: 620; letter-spacing: -.052em; line-height: 1.04; }
.problem-copy { align-self: end; }
.problem-copy p, .human-boundary p { color: var(--muted); font-size: 18px; line-height: 1.72; }
.problem-copy p:last-child, .human-boundary p:last-child { margin-bottom: 0; }

.how { padding-block: 112px; }
.section-heading { max-width: 850px; }
.section-heading > p:last-child { max-width: 730px; margin: 28px 0 0; color: var(--muted); font-size: 18px; line-height: 1.7; }
.sequence { width: min(900px, 100%); margin: 72px 0 0 auto; padding: 0; border-top: 1px solid var(--ink); list-style: none; }
.sequence li { display: grid; grid-template-columns: 62px 1fr; gap: 28px; padding: 31px 0; border-bottom: 1px solid var(--line); }
.sequence-number { padding-top: 5px; color: var(--teal-dark); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 11px; font-weight: 700; }
.sequence h3 { margin-bottom: 10px; font-size: 23px; font-weight: 650; letter-spacing: -.03em; }
.sequence p { max-width: 690px; margin-bottom: 0; color: var(--muted); font-size: 16px; line-height: 1.68; }

.human-boundary { width: 100%; max-width: none; display: block; padding-inline: max(24px, calc((100vw - var(--max)) / 2)); background: var(--ink); color: var(--white); }
.human-boundary .eyebrow { color: #7dd3c7; }
.boundary-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(60px, 10vw, 150px); }
.human-boundary p { color: #bac4cf; }
.boundary-note { padding-top: 22px; border-top: 1px solid #3a4553; color: #7dd3c7 !important; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 10px !important; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; }

.pilot { display: grid; grid-template-columns: .82fr 1.18fr; gap: clamp(58px, 9vw, 128px); padding-block: 112px; border-bottom: 1px solid var(--line); }
.pilot-copy > p:not(.eyebrow, .founder-note) { margin: 28px 0; color: var(--muted); font-size: 18px; line-height: 1.7; }
.founder-note { padding-top: 22px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; line-height: 1.6; }
.founder-note strong { color: var(--ink); }
form { display: flex; flex-direction: column; gap: 18px; align-self: start; padding: 32px; border: 1px solid var(--line); background: var(--soft); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 17px; }
label { display: flex; flex-direction: column; gap: 8px; color: var(--ink); font-size: 12px; font-weight: 700; }
input, select, textarea { width: 100%; padding: 12px 13px; border: 1px solid #cbd4d7; border-radius: 0; background: var(--white); color: var(--ink); }
textarea { min-height: 116px; resize: vertical; }
.hidden-field { position: absolute; left: -10000px; }
.consent { display: grid; grid-template-columns: 18px 1fr; gap: 10px; color: var(--muted); font-size: 11px; font-weight: 500; line-height: 1.55; }
.consent input { width: 16px; height: 16px; margin: 2px 0 0; accent-color: var(--teal); }
.consent a { color: var(--teal-dark); }
form button { align-self: flex-start; display: inline-flex; align-items: center; gap: 45px; padding: 14px 17px; border: 0; border-radius: 0; background: var(--teal); color: var(--white); font-size: 13px; font-weight: 700; cursor: pointer; }
form button:hover { background: var(--teal-dark); }
form button:disabled { opacity: .65; cursor: wait; }
.form-note, .form-status { min-height: 17px; margin: 0; color: var(--muted); font-size: 11px; }
.form-status.success { color: var(--teal-dark); }
.form-status.error { color: #b42318; }

footer { min-height: 118px; display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 42px; color: var(--muted); font-size: 11px; }
footer > div:first-child { display: flex; flex-direction: column; gap: 5px; }
footer strong { color: var(--ink); font-size: 14px; }
.footer-links { display: flex; gap: 22px; }

.privacy-main { width: min(840px, calc(100% - 48px)); margin: 0 auto; padding-block: 84px 120px; }
.privacy-content section { padding: 0 0 46px; margin-bottom: 46px; border-bottom: 1px solid var(--line); }
.privacy-content section:last-child { margin-bottom: 0; }
.privacy-content h2 { margin-bottom: 18px; font-size: 25px; font-weight: 650; letter-spacing: -.035em; }
.privacy-content p, .privacy-content li { color: var(--muted); font-size: 16px; line-height: 1.75; }
.privacy-content ul { margin: 0 0 18px; padding-left: 21px; }
.privacy-content li { margin-bottom: 8px; padding-left: 4px; }
.privacy-content strong { color: var(--ink); }
.privacy-content a { color: var(--teal-dark); text-underline-offset: 4px; }
.privacy-contact { padding: 34px !important; border: 0 !important; background: var(--soft); }
.privacy-contact h2 { font-size: 34px; }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .coordination-ledger { width: min(560px, calc(100% - 18px)); margin-left: 0; }
  .problem, .pilot, .boundary-grid { grid-template-columns: 1fr; }
  footer { grid-template-columns: 1fr auto; }
  footer > span { display: none; }
}

@media (max-width: 620px) {
  .site-header, main > section, .principles, footer, .privacy-main { width: calc(100% - 32px); }
  .site-header { min-height: 72px; }
  .site-header nav { gap: 15px; }
  .site-header nav a:not(:last-child) { display: none; }
  .hero, .problem, .pilot, .boundary-grid { min-width: 0; }
  .hero > *, .problem > *, .pilot > *, .boundary-grid > * { min-width: 0; }
  .hero { padding-block: 78px 72px; }
  h1 { font-size: 47px; overflow-wrap: anywhere; }
  .hero-lead { font-size: 18px; }
  .coordination-ledger { padding: 22px; box-shadow: 10px 10px 0 var(--teal-light); }
  .principles { grid-template-columns: 1fr 1fr; }
  .principles span:nth-child(2) { border-bottom: 1px solid var(--line); }
  .problem, .how, .pilot { padding-block: 82px; }
  .problem h2, .section-heading h2, .human-boundary h2, .pilot h2 { font-size: 42px; }
  .human-boundary { padding: 82px 20px; }
  .sequence { margin-top: 50px; }
  .sequence li { grid-template-columns: 43px 1fr; gap: 14px; }
  form { padding: 22px; }
  .field-row { grid-template-columns: 1fr; }
  footer { min-height: 150px; grid-template-columns: 1fr; gap: 22px; padding-block: 28px; }
  .privacy-main { padding-block: 64px 92px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}