:root {
  --paper: #f6f0e6;
  --panel: #fffaf0;
  --ink: #17130f;
  --muted: #6d665c;
  --line: #dacdb8;
  --copper: #c55624;
  --copper-dark: #8f351a;
  --sage: #537667;
  --sage-soft: #e4eee6;
  --stone: #2f312d;
  --smoke: #ebe3d7;
  --shadow: 0 22px 70px rgba(47, 49, 45, 0.14);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    linear-gradient(90deg, rgba(23,19,15,.045) 1px, transparent 1px),
    linear-gradient(rgba(23,19,15,.04) 1px, transparent 1px),
    var(--paper);
  background-size: 72px 72px;
  color: var(--ink);
  font-family: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.78;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(246, 240, 230, .88);
  border-bottom: 1px solid rgba(218, 205, 184, .8);
}
.topbar-inner {
  max-width: 1220px;
  margin: 0 auto;
  height: 68px;
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  min-width: 0;
}
.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid var(--ink);
  color: var(--ink);
  font-family: Georgia, serif;
  font-size: 17px;
  letter-spacing: .02em;
  background: rgba(255, 250, 240, .72);
}
.brand-copy strong {
  display: block;
  font-family: Georgia, "Noto Serif SC", serif;
  font-size: 16px;
  line-height: 1.05;
  font-weight: 500;
}
.brand-copy span {
  display: block;
  margin-top: 3px;
  font-size: 10px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}
.nav {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 13px;
  color: var(--muted);
}
.nav a {
  text-decoration: none;
}
.nav a:hover { color: var(--copper); }
.nav-cta {
  padding: 10px 15px;
  border: 1px solid var(--copper);
  color: var(--copper);
  background: rgba(197, 86, 36, .06);
}
.hero {
  max-width: 1220px;
  margin: 0 auto;
  padding: 74px 28px 34px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(380px, .72fr);
  gap: 42px;
  align-items: stretch;
}
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--copper);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .22em;
  text-transform: uppercase;
}
.kicker::before {
  content: "";
  width: 46px;
  height: 1px;
  background: var(--copper);
}
h1, h2, h3 {
  font-family: Georgia, "Noto Serif SC", serif;
  font-weight: 500;
  letter-spacing: 0;
}
h1 {
  margin: 18px 0 22px;
  font-size: clamp(42px, 7vw, 92px);
  line-height: .98;
  max-width: 850px;
}
.lead {
  max-width: 720px;
  color: #514b43;
  font-size: 18px;
  line-height: 1.92;
  margin: 0;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid var(--line);
  background: rgba(255,250,240,.68);
  text-decoration: none;
  font-size: 14px;
  font-weight: 800;
}
.btn.primary {
  background: var(--copper);
  border-color: var(--copper);
  color: #fffaf0;
}
.btn:hover { transform: translateY(-1px); }
.hero-panel {
  background: var(--stone);
  color: #f7efe2;
  border: 1px solid #201d18;
  box-shadow: var(--shadow);
  min-height: 510px;
  padding: 26px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.panel-top {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid rgba(246,240,230,.18);
  padding-bottom: 18px;
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: rgba(247,239,226,.62);
}
.signal {
  color: #a6c6b2;
}
.route-board {
  display: grid;
  gap: 10px;
  margin: 26px 0;
}
.route-row {
  display: grid;
  grid-template-columns: 44px 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 14px;
  border: 1px solid rgba(246,240,230,.14);
  background: rgba(246,240,230,.045);
}
.route-row b {
  color: #fffaf0;
  font-size: 15px;
}
.route-row span, .route-row em {
  color: rgba(247,239,226,.58);
  font-size: 12px;
  font-style: normal;
}
.route-no {
  font-family: Georgia, serif;
  color: #e2a27d;
  font-size: 18px;
}
.panel-foot {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid rgba(246,240,230,.18);
  padding-top: 18px;
}
.metric {
  border-right: 1px solid rgba(246,240,230,.15);
  padding-right: 12px;
}
.metric:last-child { border-right: 0; }
.metric strong {
  display: block;
  font-family: Georgia, serif;
  font-size: 28px;
  line-height: 1;
  color: #fffaf0;
}
.metric span {
  display: block;
  margin-top: 8px;
  color: rgba(247,239,226,.56);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.wrap {
  max-width: 1220px;
  margin: 0 auto;
  padding: 26px 28px 80px;
}
.section {
  margin-top: 34px;
  padding: 36px;
  background: rgba(255,250,240,.72);
  border: 1px solid var(--line);
  box-shadow: 0 16px 48px rgba(47,49,45,.06);
}
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 24px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 18px;
}
.section-label {
  color: var(--copper);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  font-weight: 900;
}
.section h2 {
  margin: 6px 0 0;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.14;
}
.section-head p {
  max-width: 430px;
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.card, .step, .note, .faq-item {
  background: #fffdf7;
  border: 1px solid var(--line);
}
.card {
  padding: 22px;
}
.card small {
  color: var(--copper);
  font-weight: 900;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.card h3 {
  margin: 10px 0 10px;
  font-size: 22px;
}
.card p, .step p, .note p, .faq-item p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}
.timeline {
  display: grid;
  gap: 10px;
}
.step {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
  padding: 16px;
}
.step-num {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  color: var(--copper);
  font-family: Georgia, serif;
  background: var(--paper);
}
.step h3 {
  margin: 0 0 3px;
  font-size: 18px;
}
.tag {
  white-space: nowrap;
  border: 1px solid var(--line);
  padding: 5px 9px;
  color: var(--sage);
  background: var(--sage-soft);
  font-size: 12px;
  font-weight: 800;
}
.matrix {
  overflow-x: auto;
  border: 1px solid var(--line);
  background: #fffdf7;
}
table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
  font-size: 14px;
}
th, td {
  text-align: left;
  vertical-align: top;
  padding: 15px;
  border-bottom: 1px solid var(--line);
}
th {
  font-size: 12px;
  color: var(--copper);
  letter-spacing: .12em;
  text-transform: uppercase;
  background: #f3eadc;
}
td { color: #4d473f; }
tr:last-child td { border-bottom: 0; }
.chain {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.chain div {
  background: #fffdf7;
  padding: 18px;
  min-height: 142px;
}
.chain b {
  display: block;
  margin-bottom: 10px;
  font-family: Georgia, "Noto Serif SC", serif;
  font-size: 19px;
}
.chain span {
  color: var(--muted);
  font-size: 13px;
}
.note {
  padding: 22px;
  border-left: 5px solid var(--copper);
}
.note strong {
  display: block;
  margin-bottom: 8px;
  color: var(--ink);
}
.faq {
  display: grid;
  gap: 12px;
}
.faq-item {
  padding: 20px;
}
.faq-item h3 {
  margin: 0 0 8px;
  font-size: 18px;
}
.cta-panel {
  margin-top: 34px;
  padding: 34px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 22px;
  align-items: center;
  background: var(--stone);
  color: #fffaf0;
}
.cta-panel h2 {
  margin: 0 0 8px;
  font-size: 30px;
}
.cta-panel p {
  margin: 0;
  color: rgba(255,250,240,.68);
}
.cta-panel .btn {
  border-color: rgba(255,250,240,.3);
  background: #fffaf0;
  color: var(--ink);
}
.source {
  margin-top: 20px;
  color: var(--muted);
  font-size: 12px;
}
.footer {
  border-top: 1px solid var(--line);
  padding: 28px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}
@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; padding-top: 44px; }
  .hero-panel { min-height: auto; }
  .grid-3, .grid-2, .chain { grid-template-columns: 1fr; }
  .section-head, .cta-panel { display: block; }
  .section-head p { margin-top: 12px; }
  .cta-panel .hero-actions { margin-top: 22px; }
}
@media (max-width: 680px) {
  body { background-size: 46px 46px; }
  .topbar-inner { height: auto; padding: 14px 16px; align-items: flex-start; }
  .nav { gap: 12px; overflow-x: auto; padding-bottom: 4px; }
  .nav a:not(.nav-cta) { display: none; }
  .hero, .wrap { padding-left: 16px; padding-right: 16px; }
  h1 { font-size: clamp(40px, 15vw, 62px); }
  .lead { font-size: 16px; }
  .section { padding: 22px 16px; }
  .step { grid-template-columns: 42px 1fr; }
  .step .tag { grid-column: 2; justify-self: start; }
  .panel-foot { grid-template-columns: 1fr; gap: 16px; }
  .metric { border-right: 0; border-bottom: 1px solid rgba(246,240,230,.15); padding-bottom: 14px; }
  .metric:last-child { border-bottom: 0; padding-bottom: 0; }
}