:root {
  --paper: #f4f0e7;
  --paper-2: #fbf9f4;
  --white: #fffefa;
  --ink: #17201d;
  --muted: #5f6763;
  --forest: #0d332c;
  --forest-2: #17483e;
  --brass: #9a7437;
  --brass-light: #d4b77a;
  --line: rgba(23, 32, 29, .14);
  --serif: "Songti SC", "STSong", "Noto Serif CJK SC", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 86px; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0;
}

a { color: inherit; }
button { font: inherit; }

:focus-visible {
  outline: 3px solid #bf7d39;
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: 12px;
  z-index: 100;
  padding: 10px 14px;
  color: var(--white);
  background: var(--forest);
  border-radius: 6px;
  transform: translateY(-140%);
}

.skip-link:focus { transform: translateY(0); }

.container { width: min(960px, calc(100% - 40px)); margin: 0 auto; }

.site-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(251, 249, 244, .96);
  backdrop-filter: blur(14px);
}

.nav-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  gap: 10px;
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 700;
  text-decoration: none;
}

.brand-mark {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border: 1px solid var(--forest);
  border-radius: 50%;
  font-family: var(--sans);
  font-size: 10px;
}

.nav-back {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 6px 0;
  color: var(--forest);
  font-weight: 700;
  text-decoration: none;
}

.page-hero {
  padding: 92px 0 70px;
  color: var(--white);
  background: var(--forest);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--brass-light);
  font-size: 13px;
  font-weight: 750;
}

h1, h2, h3 {
  font-family: var(--serif);
  line-height: 1.12;
  letter-spacing: 0;
  text-wrap: balance;
}

h1 { max-width: 820px; margin: 0 0 20px; font-size: 58px; }
h2 { margin: 0 0 18px; font-size: 36px; }
h3 { margin: 0 0 10px; font-size: 24px; }

.page-hero p { max-width: 720px; margin: 0; color: rgba(255, 254, 250, .72); font-size: 18px; }

.content { padding: 68px 0 90px; }

.notice {
  margin: 0 0 44px;
  padding: 18px 20px;
  border-left: 3px solid var(--brass);
  background: rgba(255, 254, 250, .68);
}

.policy-section,
.support-section {
  scroll-margin-top: 90px;
  padding: 34px 0 40px;
  border-top: 1px solid var(--line);
}

.policy-section:first-of-type,
.support-section:first-of-type { border-top: 0; }

.policy-section p,
.support-section p { max-width: 72ch; color: var(--muted); }

.policy-section ul,
.support-section ul { margin: 18px 0 0; padding-left: 20px; }
.policy-section li,
.support-section li { margin-bottom: 10px; }

.support-actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 24px 0 10px;
}

.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--forest);
  border-radius: 6px;
  padding: 12px 16px;
  color: var(--white);
  background: var(--forest);
  font-weight: 750;
  line-height: 1.3;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}

.button:hover { background: var(--forest-2); }
.button.secondary { color: var(--forest); background: var(--white); }

.copy-status { min-height: 25px; color: var(--brass); font-size: 14px; }

.details-list {
  margin: 28px 0;
  border-top: 1px solid var(--line);
}

.details-row {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 30px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.details-row strong { font-family: var(--serif); font-size: 20px; }
.details-row p { margin: 0; }

.site-footer {
  padding: 30px 0;
  color: rgba(255, 254, 250, .62);
  background: var(--forest);
  font-size: 13px;
}

.footer-inner { display: flex; justify-content: space-between; gap: 24px; }
.footer-inner a { color: var(--white); }

@media (max-width: 720px) {
  .container { width: min(100% - 28px, 620px); }
  h1 { font-size: 42px; }
  h2 { font-size: 32px; }
  .page-hero { padding: 66px 0 54px; }
  .content { padding: 46px 0 66px; }
  .support-actions { grid-template-columns: 1fr; }
  .details-row { grid-template-columns: 1fr; gap: 6px; }
  .footer-inner { flex-direction: column; }
}