:root {
  --paper: #f4efe4;
  --paper-2: #ebe3d3;
  --sheet: #fffaf1;
  --ink: #1b1713;
  --ink-soft: #3f3831;
  --muted: #6f675d;
  --line: #d8cdb8;
  --line-strong: #c4b59a;
  --copper: #c05621;
  --copper-dark: #8d3914;
  --pine: #1f4d40;
  --pine-2: #2b6756;
  --sand: #e8c39a;
  --focus: #1f4d40;
  --radius: 22px;
  --wrap: 1120px;
  --header: 76px;
  --shadow: 0 18px 40px rgba(31, 28, 22, 0.08);
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Times New Roman", serif;
  --sans: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink-soft);
  background:
    radial-gradient(circle at 12% -10%, rgba(232, 195, 154, 0.35), transparent 28%),
    radial-gradient(circle at 100% 0%, rgba(31, 77, 64, 0.08), transparent 32%),
    repeating-linear-gradient(90deg, rgba(196, 181, 154, 0.18) 0 1px, transparent 1px 72px),
    var(--paper);
  font: 17px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
a { color: var(--pine); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--copper-dark); }
button { font: inherit; }
:focus-visible {
  outline: 3px solid var(--sand);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 20;
  background: var(--pine);
  color: #fff;
  padding: 10px 16px;
}
.skip-link:focus { left: 12px; top: 12px; }

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(14px);
  background: rgba(244, 239, 228, 0.88);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  min-height: var(--header);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.03em;
}
.brand small {
  display: block;
  margin-top: 1px;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.brand-mark {
  width: 38px;
  height: 38px;
  flex: none;
}
.nav-toggle {
  display: none;
  border: 1px solid var(--line-strong);
  background: var(--sheet);
  border-radius: 999px;
  padding: 10px 14px;
  color: var(--ink);
}
.mainnav {
  display: flex;
  align-items: center;
  gap: 22px;
}
.mainnav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 15px;
}
.mainnav a[aria-current="page"],
.mainnav a:hover { color: var(--copper-dark); }
.header-cta { white-space: nowrap; }
.mainnav .nav-cta { display: none; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 650;
  font-size: 15px;
  transition: transform .15s ease, background .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--copper); color: #fff; }
.btn-primary:hover { background: var(--copper-dark); color: #fff; }
.btn-ghost {
  background: transparent;
  color: var(--pine);
  border: 1px solid var(--pine);
}
.btn-ghost:hover { background: var(--pine); color: #fff; }

.hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 36px;
  align-items: center;
  padding: 54px 0 28px;
}
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  color: var(--copper-dark);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.kicker::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--copper);
}
h1, h2, h3 { color: var(--ink); font-family: var(--serif); letter-spacing: -0.03em; }
h1 {
  margin: 0 0 18px;
  font-size: clamp(34px, 6vw, 62px);
  line-height: 1.08;
  max-width: 14ch;
}
.lead {
  max-width: 62ch;
  margin: 0 0 26px;
  font-size: 19px;
  color: var(--ink-soft);
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-card {
  background: var(--sheet);
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: var(--shadow);
  padding: 26px;
  position: relative;
  overflow: hidden;
}
.hero-card::after {
  content: "";
  position: absolute;
  right: -40px;
  top: -50px;
  width: 180px;
  height: 180px;
  border: 2px dashed var(--sand);
  border-radius: 50%;
}
.hero-card h2 { margin: 0 0 14px; font-size: 22px; }
.route-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.route-list li {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 10px;
  align-items: start;
  padding: 10px 0;
  border-top: 1px dashed var(--line);
}
.route-list li:first-child { border-top: 0; }
.num {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--pine);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin: 18px 0 10px;
}
.stat {
  background: rgba(255, 250, 241, 0.72);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 18px;
}
.stat b {
  display: block;
  color: var(--copper-dark);
  font-family: var(--serif);
  font-size: 30px;
  line-height: 1;
  margin-bottom: 8px;
}

.section { padding: 56px 0; }
.section h2 {
  margin: 0 0 12px;
  font-size: clamp(28px, 4vw, 42px);
  max-width: 18ch;
}
.section-intro {
  max-width: 68ch;
  margin: 0 0 28px;
  color: var(--muted);
}

.grid-3, .grid-4, .grid-2 { display: grid; gap: 16px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: 1.1fr 0.9fr; }

.card, .prose-card {
  background: var(--sheet);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}
.card h3, .format h3 { margin: 10px 0 8px; font-size: 22px; }
.tag {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(31, 77, 64, 0.1);
  color: var(--pine);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.steps { counter-reset: step; display: grid; gap: 14px; }
.step {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 16px;
  padding: 8px 0;
}
.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  font-family: var(--serif);
  font-size: 28px;
  color: var(--copper);
}

.format {
  min-height: 220px;
  padding: 24px;
  border-radius: 24px;
  color: #f7f1e6;
}
.format p { color: rgba(247, 241, 230, 0.84); }
.format-1 { background: #1f4d40; }
.format-2 { background: #8d3914; }
.format-3 { background: #3b332b; }
.format-4 { background: #245e73; }

.method {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 28px;
  align-items: center;
  background: var(--pine);
  color: #efe7d8;
  border-radius: 32px;
  padding: 36px;
}
.method h2, .method h3 { color: #fffaf1; }
.chain {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chain span {
  background: rgba(255,250,241,.12);
  border: 1px solid rgba(232,195,154,.35);
  border-radius: 999px;
  padding: 8px 12px;
  font-size: 14px;
}

.guides { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.guide {
  display: grid;
  gap: 8px;
  text-decoration: none;
  color: inherit;
}
.guide:hover { border-color: var(--copper); }
.guide time, .meta { color: var(--muted); font-size: 13px; }
.guide h3 { margin: 0; font-size: 24px; }

.faq details {
  background: var(--sheet);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px 18px;
  margin: 10px 0;
}
.faq summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 20px;
}
.faq p { margin: 10px 0 0; }

.compare {
  width: 100%;
  border-collapse: collapse;
  background: var(--sheet);
  border-radius: 18px;
  overflow: hidden;
}
.compare th, .compare td {
  text-align: left;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.compare th {
  background: var(--pine);
  color: #fff;
  font-weight: 650;
}
.compare tr:last-child td { border-bottom: 0; }

.crumbs {
  padding: 22px 0 0;
  color: var(--muted);
  font-size: 14px;
}
.crumbs ol { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; margin: 0; padding: 0; }
.crumbs li { display: flex; align-items: center; gap: 8px; }
.crumbs li + li::before { content: "→"; color: var(--line-strong); }

.page-hero { padding: 24px 0 8px; }
.page-hero h1 { max-width: 18ch; font-size: clamp(32px, 5vw, 52px); }
.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 36px;
  padding: 18px 0 50px;
}
.prose { max-width: 72ch; }
.prose h2 { margin: 34px 0 12px; font-size: 30px; }
.prose h3 { margin: 24px 0 8px; font-size: 22px; }
.prose p, .prose li { font-size: 17px; }
.prose ul, .prose ol { padding-left: 22px; }
.prose li + li { margin-top: 6px; }
.aside { position: sticky; top: 92px; display: grid; gap: 14px; height: max-content; }
.aside-card h2 { margin: 0 0 10px; font-size: 18px; }
.aside-links { display: grid; gap: 8px; }
.article-meta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 18px;
}

.site-footer {
  margin-top: 20px;
  background: #171411;
  color: #cfc4b3;
  padding: 42px 0 28px;
}
.site-footer a { color: #ead9c0; text-decoration: none; }
.site-footer a:hover { color: #fff; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 28px;
}
.footer-brand {
  font-family: var(--serif);
  font-size: 28px;
  color: #fffaf1;
}
.footer-note { max-width: 48ch; }
.legal {
  margin-top: 28px;
  padding-top: 16px;
  border-top: 1px solid rgba(232, 195, 154, 0.18);
  font-size: 13px;
  color: #9d9386;
}

.layers { display: grid; gap: 12px; }
.layer {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 16px;
  padding: 18px;
  background: var(--sheet);
  border: 1px solid var(--line);
  border-radius: 20px;
}
.layer b {
  font-family: var(--serif);
  font-size: 28px;
  color: var(--copper);
}
.sheet {
  width: 100%;
  border-collapse: collapse;
  background: var(--sheet);
}
.sheet th, .sheet td {
  border: 1px solid var(--line);
  padding: 12px;
  vertical-align: top;
}
.sheet th { background: var(--pine); color: #fff; }
.sheet td input, .sheet td textarea {
  width: 100%;
  border: 0;
  background: transparent;
  font: inherit;
  color: inherit;
  min-height: 42px;
}
.glossary dt {
  font-family: var(--serif);
  font-size: 22px;
  color: var(--ink);
  margin-top: 22px;
}
.glossary dd { margin: 6px 0 0; }
.print-hint { color: var(--muted); font-size: 14px; }
@media print {
  .site-header, .site-footer, .hero-actions, .skip-link { display: none !important; }
  body { background: #fff; }
  .sheet { break-inside: avoid; }
}

@media (max-width: 900px) {
  .hero, .grid-3, .grid-4, .grid-2, .stats, .guides, .method, .layout, .footer-grid {
    grid-template-columns: 1fr;
  }
  h1 { max-width: none; }
  .nav-toggle { display: inline-flex; }
  .mainnav, .header-cta { display: none; }
  body.nav-open .mainnav {
    display: grid;
    position: absolute;
    left: 16px;
    right: 16px;
    top: calc(var(--header) + 8px);
    background: var(--sheet);
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 16px;
    gap: 12px;
    box-shadow: var(--shadow);
  }
  body.nav-open .mainnav .nav-cta { display: inline-flex; justify-content: center; }
  .header-inner { position: relative; }
  .step { grid-template-columns: 1fr; }
}