:root {
  color-scheme: light dark;
  --paper: #f3f0e4;
  --paper-raised: #fbf8ed;
  --ink: #20352b;
  --muted: #5f6e65;
  --sprout: #5f9158;
  --terracotta: #a75838;
  --dew: #d4e9e1;
  --sun: #f2c14e;
  --line: color-mix(in srgb, var(--ink) 20%, transparent);
  --display: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  --body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", sans-serif;
  --utility: ui-rounded, "SF Pro Rounded", "PingFang SC", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(90deg, transparent 0 3.2rem, color-mix(in srgb, var(--terracotta) 18%, transparent) 3.2rem 3.26rem, transparent 3.26rem),
    var(--paper);
  color: var(--ink);
  font-family: var(--body);
  line-height: 1.72;
  overflow-wrap: anywhere;
}

a {
  color: currentColor;
  text-underline-offset: 0.2em;
  text-decoration-thickness: 0.08em;
}

a:hover {
  color: var(--terracotta);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--sun);
  outline-offset: 4px;
}

.site-header {
  align-items: center;
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 2rem;
  justify-content: space-between;
  margin-left: 3.25rem;
  min-height: 5.25rem;
  padding: 1rem clamp(1.25rem, 4vw, 4.5rem);
}

.brand {
  align-items: baseline;
  display: inline-flex;
  gap: 0.75rem;
  text-decoration: none;
}

.brand strong {
  font-family: var(--display);
  font-size: 1.8rem;
  letter-spacing: 0.08em;
}

.brand span,
.eyebrow,
.stamp,
.meta,
.site-nav {
  font-family: var(--utility);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.brand span,
.meta {
  color: var(--muted);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 1.2rem;
}

.site-nav a {
  text-decoration: none;
}

main {
  margin-left: 3.25rem;
}

.hero {
  display: grid;
  gap: clamp(2rem, 6vw, 6rem);
  grid-template-columns: minmax(0, 1.25fr) minmax(18rem, 0.75fr);
  margin: 0 auto;
  max-width: 82rem;
  min-height: min(43rem, calc(100vh - 5.25rem));
  padding: clamp(4rem, 9vw, 8rem) clamp(1.25rem, 5vw, 5.5rem);
}

.hero-copy {
  align-self: center;
  min-width: 0;
}

.eyebrow {
  color: var(--terracotta);
  margin: 0 0 1.1rem;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  font-family: var(--display);
  font-weight: 700;
  line-height: 1.18;
  margin-top: 0;
}

h1 {
  font-size: clamp(3rem, 8vw, 7.5rem);
  letter-spacing: -0.035em;
  margin-bottom: 1.4rem;
  max-width: 9ch;
}

.hero-lead {
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  max-width: 36rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.action {
  border: 1px solid var(--ink);
  display: inline-flex;
  font-weight: 700;
  padding: 0.75rem 1.05rem;
  text-decoration: none;
}

.action.primary {
  background: var(--ink);
  color: var(--paper-raised);
}

.action:hover {
  background: var(--terracotta);
  border-color: var(--terracotta);
  color: white;
}

.vein-index {
  align-self: center;
  min-width: 0;
  padding-left: 2.4rem;
  position: relative;
}

.vein-index::before {
  background: var(--sprout);
  content: "";
  inset: 0 auto 0 0.7rem;
  position: absolute;
  transform: rotate(-1deg);
  width: 2px;
}

.vein-item {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  margin: 0 0 1.1rem;
  padding: 1rem 1.15rem;
  position: relative;
}

.vein-item:nth-child(even) {
  transform: translateX(1rem);
}

.vein-item::before {
  background: var(--sprout);
  border: 4px solid var(--paper);
  border-radius: 50%;
  content: "";
  height: 0.8rem;
  left: -2.16rem;
  position: absolute;
  top: 1.35rem;
  width: 0.8rem;
}

.vein-item strong {
  display: block;
  font-family: var(--display);
  font-size: 1.2rem;
}

.vein-item span {
  color: var(--muted);
  display: block;
  font-size: 0.9rem;
}

.content-shell {
  display: grid;
  gap: clamp(2rem, 6vw, 6rem);
  grid-template-columns: minmax(13rem, 0.35fr) minmax(0, 1fr);
  margin: 0 auto;
  max-width: 76rem;
  padding: clamp(3rem, 7vw, 6rem) clamp(1.25rem, 5vw, 5.5rem) 7rem;
}

.folio {
  align-self: start;
  position: sticky;
  top: 2rem;
}

.folio h1 {
  font-size: clamp(2.6rem, 5vw, 5.2rem);
  max-width: 7ch;
}

.stamp {
  border: 2px solid var(--terracotta);
  color: var(--terracotta);
  display: inline-block;
  margin-bottom: 1.5rem;
  padding: 0.35rem 0.55rem;
  transform: rotate(-2deg);
}

.document {
  min-width: 0;
}

.document section {
  border-top: 1px solid var(--line);
  padding: 2rem 0 2.5rem;
}

.document section:first-child {
  border-top-width: 3px;
}

.document h2 {
  font-size: clamp(1.6rem, 3vw, 2.5rem);
  margin-bottom: 1rem;
}

.document h3 {
  font-size: 1.15rem;
  margin: 1.5rem 0 0.4rem;
}

.document p,
.document li {
  max-width: 47rem;
}

.document li + li {
  margin-top: 0.55rem;
}

.notice {
  background: var(--dew);
  border-left: 4px solid var(--sprout);
  padding: 1rem 1.2rem;
}

.support-grid {
  display: grid;
  gap: 1px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  background: var(--line);
  border: 1px solid var(--line);
  margin: 1.5rem 0;
}

.support-card {
  background: var(--paper-raised);
  min-width: 0;
  padding: 1.4rem;
}

.support-card h3 {
  margin-top: 0;
}

.site-footer {
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 2rem;
  justify-content: space-between;
  margin-left: 3.25rem;
  padding: 1.7rem clamp(1.25rem, 4vw, 4.5rem) 2.2rem;
}

.site-footer p {
  color: var(--muted);
  margin: 0;
}

@media (max-width: 760px) {
  body {
    background: var(--paper);
  }

  .site-header,
  .site-footer,
  main {
    margin-left: 0;
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.6rem;
  }

  .hero,
  .content-shell {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero {
    min-height: auto;
    padding-top: 3.5rem;
  }

  h1 {
    font-size: clamp(3rem, 17vw, 5rem);
  }

  .folio {
    position: static;
  }

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

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #17241e;
    --paper-raised: #203229;
    --ink: #eef2e7;
    --muted: #b6c1b8;
    --sprout: #8fbd82;
    --terracotta: #e4936d;
    --dew: #294c44;
    --sun: #f2c14e;
    --line: color-mix(in srgb, var(--ink) 22%, transparent);
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}