:root {
  color-scheme: light;
  --lime: #f6fb9a;
  --plum: #452d40;
  --ink: #0b0b0b;
  --white: #ffffff;
  --cream: #fefbd6;
  --warm-gray: #e8e7db;
  --mint: #b3fcb2;
  --mist: #ced9de;
  --muted: #545454;
  --line: rgba(11, 11, 11, 0.2);
  --shadow: 0 20px 60px rgba(69, 45, 64, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 17px;
  line-height: 1.65;
}
a { color: inherit; }
code {
  overflow-wrap: anywhere;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}
.skip-link {
  position: fixed;
  left: 16px;
  top: -80px;
  z-index: 10;
  padding: 12px 16px;
  background: var(--plum);
  color: var(--white);
}
.skip-link:focus { top: 16px; }
.site-header {
  max-width: 1240px;
  margin: 0 auto;
  padding: 28px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand { display: inline-flex; padding: 10px 0; }
.brand img { display: block; width: 178px; height: auto; }
.status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
}
.status span { color: #157f22; }
main { overflow: hidden; }
.hero {
  max-width: 1240px;
  min-height: 650px;
  margin: 0 auto;
  padding: 64px 32px 80px;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(300px, 0.75fr);
  gap: 64px;
  align-items: center;
  position: relative;
}
.hero::before {
  content: "";
  position: absolute;
  width: 430px;
  height: 430px;
  right: -120px;
  top: 40px;
  border: 84px solid var(--lime);
  border-radius: 50%;
  z-index: -1;
}
.eyebrow {
  margin: 0 0 12px;
  font-family: "Arial Narrow", "PingFang SC", sans-serif;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.14em;
}
h1, h2, h3 { margin-top: 0; line-height: 1.08; }
h1 {
  margin-bottom: 28px;
  font-size: clamp(48px, 6.8vw, 92px);
  letter-spacing: -0.055em;
}
h2 { margin-bottom: 18px; font-size: clamp(30px, 4vw, 52px); letter-spacing: -0.035em; }
h3 { margin-bottom: 12px; font-size: 25px; }
.lede { max-width: 650px; margin: 0; font-size: 20px; color: #333; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.button {
  min-height: 48px;
  padding: 13px 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--plum);
  border-radius: 10px;
  font-weight: 700;
  text-decoration: none;
}
.button.primary { background: var(--plum); color: var(--white); }
.button.secondary { background: var(--white); color: var(--plum); }
.button:hover { transform: translateY(-1px); }
a:focus-visible { outline: 4px solid #e4cd46; outline-offset: 4px; }
.bridge-card {
  padding: 30px;
  background: var(--lime);
  border: 2px solid var(--ink);
  border-radius: 16px;
  box-shadow: var(--shadow);
  transform: rotate(1deg);
}
.bridge-label { margin: 0 0 4px; font-size: 13px; font-weight: 800; letter-spacing: 0.13em; }
.bridge-card > strong {
  display: block;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: clamp(28px, 4vw, 46px);
  letter-spacing: -0.04em;
}
.bridge-card dl { margin: 28px 0 0; }
.bridge-card dl div { padding: 14px 0; border-top: 1px solid rgba(11, 11, 11, 0.35); }
.bridge-card dt { font-size: 13px; font-weight: 700; }
.bridge-card dd { margin: 3px 0 0; font-weight: 650; }
.boundary {
  padding: 64px max(32px, calc((100vw - 1176px) / 2));
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
  background: var(--plum);
  color: var(--white);
}
.boundary p { margin: 0; font-size: 19px; }
.boundary code { color: var(--lime); }
.resources { max-width: 1240px; margin: 0 auto; padding: 96px 32px; }
.section-heading { max-width: 700px; margin-bottom: 40px; }
.resource-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.resource-card {
  min-height: 290px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--white);
}
.resource-card:nth-child(3n + 1) { background: var(--cream); }
.resource-card:nth-child(3n + 2) { background: #f6f6f2; }
.resource-card:nth-child(3n) { background: #eef8ee; }
.resource-kicker { margin: 0 0 22px; font-size: 12px; font-weight: 800; letter-spacing: 0.1em; color: var(--muted); }
.resource-card > p:not(.resource-kicker) { margin: 0; color: #333; }
.resource-card a { margin-top: auto; padding-top: 24px; font-weight: 800; color: var(--plum); }
.resource-card code { display: block; margin-top: 10px; color: var(--muted); font-size: 12px; line-height: 1.45; }
.principles {
  max-width: 1176px;
  margin: 0 auto 96px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 2px solid var(--ink);
  background: var(--lime);
}
.principles p {
  margin: 0;
  padding: 28px 20px;
  text-align: center;
  font-size: clamp(28px, 4vw, 46px);
  font-weight: 800;
  border-right: 2px solid var(--ink);
}
.principles p:nth-child(3) { border-right: 0; }
.principles span {
  grid-column: 1 / -1;
  padding: 12px 20px;
  text-align: center;
  border-top: 2px solid var(--ink);
  font-weight: 700;
}
.site-footer {
  padding: 32px max(24px, calc((100vw - 1176px) / 2));
  display: flex;
  justify-content: space-between;
  gap: 24px;
  background: var(--ink);
  color: var(--white);
  font-size: 14px;
}
.site-footer p { margin: 0; }

@media (max-width: 760px) {
  body { font-size: 16px; }
  .site-header { padding: 20px 20px; align-items: flex-start; }
  .brand img { width: 132px; }
  .status { max-width: 122px; padding: 7px 10px; font-size: 12px; }
  .hero { min-height: auto; padding: 56px 20px 64px; grid-template-columns: 1fr; gap: 36px; }
  .hero::before { width: 260px; height: 260px; right: -150px; top: 120px; border-width: 52px; }
  h1 { font-size: 50px; }
  .lede { font-size: 18px; }
  .hero-actions { flex-direction: column; }
  .button { width: 100%; }
  .bridge-card { padding: 24px; transform: none; }
  .bridge-card > strong { font-size: 29px; }
  .boundary { padding: 48px 20px; grid-template-columns: 1fr; gap: 12px; }
  .resources { padding: 72px 20px; }
  .resource-grid { grid-template-columns: 1fr; }
  .resource-card { min-height: 270px; }
  .principles { margin: 0 20px 72px; }
  .principles p { padding: 20px 8px; font-size: 27px; }
  .principles span { font-size: 14px; }
  .site-footer { padding: 28px 20px; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button:hover { transform: none; }
}