@import url("https://fonts.googleapis.com/css2?family=Archivo:wght@400;500;600;700;800&family=Space+Grotesk:wght@400;500;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap");

:root {
  --bg: #dfe7ea;
  --paper: #f7f4ed;
  --paper-strong: #efe5d7;
  --ink: #1f2a33;
  --muted: #5f6974;
  --line: rgba(31, 42, 51, 0.14);
  --accent: #f26b3a;
  --accent-strong: #ba4d24;
  --warning: #2d7c84;
  --shadow: 0 24px 60px rgba(31, 42, 51, 0.09);
  --max: 1180px;
  --radius: 28px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(45, 124, 132, 0.14), transparent 26%),
    linear-gradient(180deg, rgba(242, 107, 58, 0.08), transparent 22%),
    linear-gradient(90deg, rgba(31, 42, 51, 0.035) 1px, transparent 1px),
    linear-gradient(rgba(31, 42, 51, 0.035) 1px, transparent 1px),
    var(--bg);
  background-size: auto, 28px 28px, 28px 28px, auto;
  color: var(--ink);
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

p {
  margin: 0;
  color: var(--muted);
  line-height: 1.72;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--ink);
}

.container {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(18px);
  background: rgba(223, 231, 234, 0.84);
  border-bottom: 1px solid var(--line);
}

.nav-shell {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 24px;
  align-items: center;
  min-height: 84px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border: 1px solid var(--ink);
  border-radius: 16px;
  background: var(--ink);
  color: #fff3ea;
  font-family: "Archivo", sans-serif;
  font-weight: 800;
  font-size: 1.25rem;
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.04);
}

.brand-copy {
  display: grid;
  gap: 3px;
}

.brand-copy strong {
  font-family: "Archivo", sans-serif;
  font-size: 1rem;
  letter-spacing: -0.03em;
}

.brand-copy span {
  font-family: "IBM Plex Mono", monospace;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.72rem;
  color: var(--muted);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.site-nav a {
  padding: 11px 14px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.11em;
}

.site-nav a:hover,
.site-nav a.is-active {
  border-color: var(--ink);
  background: var(--paper);
}

main {
  padding-bottom: 72px;
}

.masthead {
  padding: 42px 0 22px;
}

.hero-manual {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 24px;
  align-items: stretch;
}

.manual-panel,
.side-sheet,
.section-card,
.ledger-panel,
.contact-block,
.faq-card,
.policy-block,
.plain-panel,
.quote-panel,
.stat-band,
.strip-grid article,
.chapter-card {
  background: rgba(251, 250, 246, 0.88);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.manual-panel {
  padding: 32px;
  border-radius: 34px 34px 10px 34px;
  display: grid;
  gap: 22px;
}

.manual-topline,
.micro-label,
.section-label,
.chapter-label,
.policy-label {
  font-family: "IBM Plex Mono", monospace;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.72rem;
  color: var(--muted);
}

.manual-code {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.manual-code span,
.tag-row span,
.pill-row span {
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.74rem;
  color: var(--muted);
}

.display-title {
  font-family: "Archivo", sans-serif;
  font-size: clamp(2.7rem, 5vw, 5.65rem);
  line-height: 0.98;
  letter-spacing: -0.06em;
  max-width: 11ch;
}

.display-title em {
  font-style: normal;
  color: var(--warning);
}

.lead-copy {
  max-width: 64ch;
  font-size: 1.04rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid var(--ink);
  font-weight: 600;
}

.button-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fffaf4;
}

.button-secondary {
  background: transparent;
}

.manual-notes {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.manual-notes article {
  padding: 16px;
  border-top: 4px solid var(--ink);
  background: var(--paper);
}

.manual-notes strong,
.rail-title,
.section-card h3,
.faq-card h3,
.chapter-card h3 {
  display: block;
  margin-bottom: 10px;
  font-family: "Archivo", sans-serif;
  font-size: 1.1rem;
  letter-spacing: -0.03em;
}

.side-sheet {
  padding: 20px;
  border-radius: 14px 34px 34px 34px;
  display: grid;
  gap: 18px;
}

.sheet-banner {
  padding: 20px;
  border-radius: 18px;
  background: linear-gradient(145deg, var(--ink), #35505c);
  color: var(--paper);
}

.sheet-banner p,
.quote-panel p {
  color: rgba(251, 250, 246, 0.78);
}

.sheet-banner strong {
  display: block;
  margin: 10px 0 12px;
  font-family: "Archivo", sans-serif;
  font-size: 1.5rem;
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.rail-list {
  display: grid;
  gap: 12px;
}

.rail-item {
  padding: 16px;
  border-radius: 16px;
  background: var(--paper-strong);
  border-left: 8px solid var(--accent-strong);
}

.rail-item:nth-child(2) {
  border-left-color: var(--warning);
}

.rail-item:nth-child(3) {
  border-left-color: var(--warning);
}

.chapter-grid {
  padding: 26px 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.chapter-card {
  padding: 22px;
  border-radius: 22px;
  display: grid;
  gap: 14px;
}

.chapter-number {
  display: inline-flex;
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--ink);
  border-radius: 999px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.78rem;
  background: var(--paper);
}

.chapter-layout {
  padding: 24px 0;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
}

.section-card {
  padding: 26px;
  border-radius: 30px;
  display: grid;
  gap: 18px;
}

.section-card h2,
.ledger-panel h2,
.plain-panel h2,
.policy-block h2 {
  font-family: "Archivo", sans-serif;
  font-size: clamp(1.7rem, 3vw, 3rem);
  line-height: 1.02;
  letter-spacing: -0.05em;
}

.grid-two,
.grid-three,
.strip-grid {
  display: grid;
  gap: 16px;
}

.grid-two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.strip-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.strip-grid article,
.mini-ledger {
  padding: 18px;
  border-radius: 18px;
}

.mini-ledger strong,
.contact-line strong {
  display: block;
  margin-bottom: 8px;
  font-family: "Archivo", sans-serif;
}

.ledger-panel {
  padding: 28px;
  border-radius: 18px 28px 28px 28px;
  background: linear-gradient(180deg, #243744, #1f2a33);
  color: var(--paper);
  display: grid;
  gap: 18px;
}

.ledger-panel .section-label,
.ledger-panel p,
.ledger-panel .micro-label {
  color: rgba(251, 250, 246, 0.78);
}

.ledger-list {
  display: grid;
  gap: 14px;
}

.ledger-item {
  display: grid;
  grid-template-columns: 74px 1fr;
  gap: 14px;
  align-items: start;
  padding-top: 14px;
  border-top: 1px solid rgba(251, 250, 246, 0.18);
}

.ledger-code {
  font-family: "IBM Plex Mono", monospace;
  color: #ffd8c9;
  font-size: 0.74rem;
}

.faq-grid,
.policy-grid,
.contact-grid {
  display: grid;
  gap: 18px;
}

.faq-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.contact-grid {
  grid-template-columns: 1.1fr 0.9fr;
}

.contact-block,
.faq-card,
.policy-block,
.plain-panel,
.quote-panel,
.stat-band {
  padding: 24px;
  border-radius: 24px;
}

.quote-panel {
  background: linear-gradient(160deg, #244551, #1f2a33);
  color: var(--paper);
}

.quote-panel strong {
  display: block;
  margin: 12px 0;
  font-family: "Archivo", sans-serif;
  font-size: 1.35rem;
  line-height: 1.15;
}

.contact-line {
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.contact-line a {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.84rem;
  word-break: break-all;
}

.stat-band {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.stat-item strong {
  display: block;
  font-family: "Archivo", sans-serif;
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  letter-spacing: -0.06em;
  margin-bottom: 8px;
}

.policy-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.policy-block {
  display: grid;
  gap: 14px;
}

.footer-shell {
  padding: 28px 0 56px;
}

.footer-card {
  padding: 28px;
  border-radius: 30px;
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
}

.footer-nav a {
  font-family: "IBM Plex Mono", monospace;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  color: var(--muted);
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .nav-shell,
  .hero-manual,
  .chapter-layout,
  .contact-grid,
  .footer-card {
    grid-template-columns: 1fr;
  }

  .manual-notes,
  .grid-three,
  .strip-grid,
  .stat-band,
  .policy-grid {
    grid-template-columns: 1fr 1fr;
  }

  .faq-grid,
  .grid-two,
  .chapter-grid {
    grid-template-columns: 1fr;
  }

  .site-nav {
    justify-content: flex-start;
    padding-bottom: 14px;
  }
}

@media (max-width: 680px) {
  .container {
    width: min(var(--max), calc(100% - 20px));
  }

  .manual-panel,
  .side-sheet,
  .section-card,
  .ledger-panel,
  .contact-block,
  .faq-card,
  .policy-block,
  .plain-panel,
  .quote-panel,
  .stat-band,
  .footer-card {
    padding: 18px;
    border-radius: 22px;
  }

  .manual-notes,
  .grid-three,
  .strip-grid,
  .stat-band,
  .policy-grid {
    grid-template-columns: 1fr;
  }

  .display-title {
    max-width: none;
  }

  .ledger-item {
    grid-template-columns: 1fr;
  }
}