:root {
  --ink: #17211c;
  --muted: #5d6861;
  --paper: #f4f0e7;
  --sheet: #fffdf7;
  --line: #c8c8bc;
  --green: #155d46;
  --green-dark: #0d3e30;
  --orange: #d46732;
  --signal: #e7b95d;
  --blueprint: #dfe8e3;
  --radius: 14px;
  --shadow: 0 22px 70px rgba(23, 33, 28, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(rgba(23, 33, 28, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 33, 28, 0.035) 1px, transparent 1px),
    var(--paper);
  background-size: 28px 28px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

a { color: inherit; }
button, input, select, textarea { font: inherit; }
button, .button { min-height: 46px; }
:focus-visible { outline: 3px solid var(--signal); outline-offset: 3px; }
.skip-link { position: absolute; left: -999px; top: 0; z-index: 30; background: var(--ink); color: white; padding: 0.75rem 1rem; }
.skip-link:focus { left: 1rem; top: 1rem; }
.shell { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(23, 33, 28, 0.12);
  background: rgba(244, 240, 231, 0.9);
  backdrop-filter: blur(18px);
}
.nav { min-height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.brand { display: inline-flex; align-items: center; gap: 0.75rem; text-decoration: none; font-weight: 800; letter-spacing: -0.03em; font-size: 1.15rem; }
.brand-mark { width: 38px; height: 38px; display: grid; place-items: center; border: 2px solid var(--ink); border-radius: 50%; font: 700 0.65rem/1 ui-monospace, monospace; }
.nav-links { display: flex; align-items: center; gap: 1.4rem; font-size: 0.92rem; }
.nav-links a { text-decoration: none; }
.nav-links a:hover { text-decoration: underline; text-underline-offset: 5px; }

.button { display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; border: 1px solid var(--green); border-radius: 999px; padding: 0.72rem 1.1rem; background: var(--green); color: white; text-decoration: none; font-weight: 750; cursor: pointer; }
.button:hover { background: var(--green-dark); }
.button.secondary { color: var(--ink); background: transparent; border-color: var(--ink); }
.button.secondary:hover { background: var(--ink); color: white; }

.hero { padding: 7rem 0 5rem; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: clamp(3rem, 7vw, 7rem); align-items: center; }
.eyebrow { margin: 0 0 1rem; color: var(--green); font: 800 0.78rem/1.3 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: 0.11em; text-transform: uppercase; }
h1, h2, h3 { line-height: 1.03; letter-spacing: -0.045em; }
h1 { margin: 0; font-size: clamp(3.4rem, 7.8vw, 7rem); font-weight: 780; max-width: 12ch; }
h2 { margin: 0; font-size: clamp(2.3rem, 4.6vw, 4.5rem); max-width: 15ch; }
h3 { font-size: 1.35rem; }
.lede { margin: 1.6rem 0 0; max-width: 60ch; color: var(--muted); font-size: clamp(1.05rem, 1.6vw, 1.3rem); }
.hero-actions { display: flex; gap: 0.8rem; flex-wrap: wrap; margin-top: 2rem; }
.trust-line { display: flex; flex-wrap: wrap; gap: 1rem 2rem; margin-top: 2.5rem; padding: 1rem 0 0; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.86rem; }

.packet { position: relative; min-height: 570px; }
.sheet-card { position: absolute; background: var(--sheet); border: 1px solid var(--line); border-radius: 8px; box-shadow: var(--shadow); }
.sheet-back { inset: 7% 8% 10% 14%; transform: rotate(5deg); background: var(--blueprint); }
.sheet-mid { inset: 4% 13% 13% 8%; transform: rotate(-4deg); }
.sheet-front { inset: 10% 3% 2% 11%; padding: clamp(1.3rem, 3vw, 2.2rem); }
.sheet-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; border-bottom: 2px solid var(--ink); padding-bottom: 1rem; }
.sheet-kicker { font: 700 0.7rem/1.3 ui-monospace, monospace; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
.sheet-title { margin: 0.2rem 0 0; font: 780 clamp(1.5rem, 3vw, 2.2rem)/1 ui-sans-serif, sans-serif; letter-spacing: -0.04em; }
.status-stamp { border: 2px solid var(--green); color: var(--green); border-radius: 999px; padding: 0.35rem 0.55rem; font: 750 0.67rem/1 ui-monospace, monospace; white-space: nowrap; }
.source-strip { display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 1rem 0; }
.source-chip { border: 1px solid var(--line); border-radius: 4px; background: white; padding: 0.35rem 0.5rem; font: 650 0.68rem/1.2 ui-monospace, monospace; }
.handoff-row { display: grid; grid-template-columns: 1fr auto; gap: 1rem; padding: 0.85rem 0; border-top: 1px solid var(--line); }
.handoff-row strong { display: block; font-size: 0.9rem; }
.handoff-row span { color: var(--muted); font-size: 0.8rem; }
.source-ref { align-self: center; border-left: 3px solid var(--orange); padding-left: 0.6rem; font: 650 0.67rem/1.3 ui-monospace, monospace; color: var(--muted); }
.flag { margin-top: 1rem; padding: 0.8rem; border-left: 4px solid var(--orange); background: #f8e9dc; font-size: 0.82rem; }

section { padding: 6rem 0; }
.section-intro { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 3rem; margin-bottom: 3rem; align-items: end; }
.section-intro p { margin: 0; color: var(--muted); font-size: 1.1rem; max-width: 60ch; }
.process { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--ink); }
.process article { padding: 2rem 2rem 2rem 0; border-right: 1px solid var(--line); }
.process article + article { padding-left: 2rem; }
.process article:last-child { border-right: 0; }
.step-number { font: 750 0.72rem/1 ui-monospace, monospace; color: var(--orange); }
.process p, .boundary p, .proof-list p { color: var(--muted); }

.boundary { background: var(--ink); color: white; }
.boundary-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 4rem; }
.boundary h2 { color: white; }
.boundary p { color: #c7d0ca; }
.line-items { border-top: 1px solid #526158; }
.line-item { display: grid; grid-template-columns: 1fr auto; gap: 1rem; padding: 1.15rem 0; border-bottom: 1px solid #526158; }
.line-item span:last-child { color: #b5c3bb; font: 700 0.72rem/1.4 ui-monospace, monospace; text-transform: uppercase; }

.review-grid { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 5rem; align-items: start; }
.review-card { position: sticky; top: 105px; background: var(--sheet); padding: 2rem; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.review-card ol { padding-left: 1.3rem; color: var(--muted); }
.review-card li + li { margin-top: 0.7rem; }
.review-form { padding: 2rem; border: 1px solid var(--ink); border-radius: var(--radius); background: rgba(255, 253, 247, 0.72); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
label { display: block; font-weight: 720; font-size: 0.85rem; }
input, select, textarea { width: 100%; margin-top: 0.4rem; padding: 0.8rem 0.9rem; color: var(--ink); background: white; border: 1px solid #7f8a83; border-radius: 7px; }
textarea { min-height: 130px; resize: vertical; }
.full { grid-column: 1 / -1; }
.consent { display: grid; grid-template-columns: auto 1fr; gap: 0.65rem; align-items: start; font-weight: 500; color: var(--muted); }
.consent input { width: auto; margin: 0.2rem 0 0; }
.fine-print { color: var(--muted); font-size: 0.76rem; }
.form-status { min-height: 1.5rem; margin: 1rem 0; font-weight: 700; }
.form-status.error { color: #9a2f19; }
.form-status.success { color: var(--green); }
.honeypot { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.proof-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.proof-list article { padding: 1.5rem; background: var(--sheet); border: 1px solid var(--line); border-radius: var(--radius); }
.proof-list h3 { margin-top: 0; }
.resource-card { display: block; text-decoration: none; transition: transform 150ms ease, box-shadow 150ms ease; }
.resource-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }

.article-hero { padding: 6rem 0 3rem; }
.article-hero h1 { font-size: clamp(3rem, 7vw, 6rem); max-width: 14ch; }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 290px; gap: 5rem; align-items: start; padding-bottom: 7rem; }
.article-copy { max-width: 760px; }
.article-copy h2 { margin: 4rem 0 1.2rem; font-size: clamp(2rem, 4vw, 3.4rem); }
.article-copy h3 { margin-top: 2.4rem; }
.article-copy p, .article-copy li { color: #3f4b44; }
.article-copy li + li { margin-top: 0.6rem; }
.aside-card { position: sticky; top: 105px; padding: 1.3rem; background: var(--sheet); border: 1px solid var(--line); border-radius: var(--radius); }
.aside-card h2 { font-size: 1.35rem; margin-bottom: 1rem; }

.site-footer { border-top: 1px solid var(--line); padding: 3rem 0; background: rgba(255, 253, 247, 0.5); }
.footer-grid { display: grid; grid-template-columns: 1fr auto; gap: 2rem; align-items: end; }
.footer-meta { color: var(--muted); font-size: 0.78rem; }
.footer-links { display: flex; gap: 1rem; flex-wrap: wrap; font-size: 0.82rem; }

@media (max-width: 900px) {
  .nav-links a:not(.button) { display: none; }
  .hero { padding-top: 4rem; }
  .hero-grid, .section-intro, .boundary-grid, .review-grid, .article-layout { grid-template-columns: 1fr; }
  .packet { min-height: 520px; }
  .process, .proof-list { grid-template-columns: 1fr; }
  .process article, .process article + article { padding: 1.5rem 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .review-card, .aside-card { position: static; }
}

@media (max-width: 620px) {
  .shell { width: min(100% - 24px, 1180px); }
  .brand-mark { width: 34px; height: 34px; }
  .nav .button { padding-inline: 0.8rem; font-size: 0.78rem; }
  .hero { padding-top: 3rem; }
  h1 { font-size: clamp(3rem, 16vw, 4.5rem); }
  .packet { min-height: 480px; margin-inline: -0.3rem; }
  .sheet-front { inset: 8% 0 0 3%; }
  .sheet-back { inset: 4% 3% 12% 10%; }
  .sheet-mid { inset: 2% 7% 10% 2%; }
  .source-ref { display: none; }
  .handoff-row { grid-template-columns: 1fr; }
  section { padding: 4.5rem 0; }
  .form-grid { grid-template-columns: 1fr; }
  .full { grid-column: auto; }
  .review-form { padding: 1.25rem; }
  .footer-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}