:root {
  color-scheme: light;
  --ink: #182828;
  --muted: #506361;
  --accent: #1b645b;
  --paper: #f3f6f2;
  --line: #d7e2da;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.8;
}
a { color: var(--accent); text-underline-offset: 0.2em; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }
.wrap { width: min(100% - 40px, 1000px); margin-inline: auto; }
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-block: 28px;
  border-bottom: 1px solid var(--line);
}
.brand { font-weight: 700; color: var(--ink); text-decoration: none; }
nav { display: flex; gap: 22px; font-size: 14px; }
nav a { text-decoration: none; }
nav a[aria-current="page"] { font-weight: 700; text-decoration: underline; }
.hero { padding: 68px 0 44px; max-width: 780px; }
.eyebrow {
  margin: 0 0 16px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.07em;
}
h1 { margin: 0 0 24px; font-size: clamp(32px, 5vw, 48px); line-height: 1.35; letter-spacing: -0.02em; }
h2 { margin: 0 0 16px; font-size: 21px; line-height: 1.5; }
p { margin: 0 0 16px; }
p:last-child { margin-bottom: 0; }
.lead { font-size: 19px; line-height: 1.9; }
.scope-note, .small { color: var(--muted); font-size: 14px; }
.panel { margin-bottom: 22px; padding: 30px; background: #fff; border: 1px solid var(--line); border-radius: 16px; }
.steps { padding: 0; margin: 0 0 20px; list-style: none; counter-reset: steps; display: grid; gap: 18px; }
.steps li { counter-increment: steps; display: grid; grid-template-columns: 34px 1fr; column-gap: 14px; }
.steps li::before {
  content: counter(steps);
  grid-row: 1 / 3;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  color: var(--accent);
  background: #eaf3ed;
  border-radius: 50%;
  font-size: 14px;
  font-weight: 700;
}
.steps strong, .steps span { grid-column: 2; }
.steps span { color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.contact { background: #eaf3ed; }
.text-link { font-weight: 700; text-decoration: none; }
.english-summary { padding: 20px 0 42px; color: var(--muted); font-size: 14px; }
.english-summary h2 { font-size: 17px; }
.site-footer { display: flex; justify-content: space-between; gap: 18px; padding-block: 26px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.policy { max-width: 820px; }
.policy-heading { padding: 58px 0 32px; }
.policy-heading .lead { font-size: 18px; }
code { font-size: 0.94em; overflow-wrap: anywhere; }
.skip-link { position: absolute; top: -70px; left: 20px; z-index: 1; padding: 8px 16px; background: #fff; }
.skip-link:focus { top: 8px; }
@media (max-width: 640px) {
  .wrap { width: min(100% - 32px, 1000px); }
  .site-header { align-items: flex-start; flex-direction: column; gap: 12px; padding-block: 20px; }
  nav { gap: 20px; }
  .hero { padding: 42px 0 30px; }
  .lead { font-size: 17px; }
  .panel { padding: 22px; border-radius: 12px; }
  .grid { grid-template-columns: 1fr; gap: 0; }
  h2 { font-size: 19px; }
  .policy-heading { padding-top: 38px; }
  .site-footer { flex-direction: column; gap: 6px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }