:root {
  --paper: #fbfaf7;
  --paper-soft: #f1f4ef;
  --ink: #1c1b18;
  --ink-soft: #5a574f;
  --ink-faint: #8b877e;
  --line: #dfdcd3;
  --green: #2f5d3a;
  --green-soft: #edf2ec;
  --amber: #9a6b22;
  --serif: "Songti SC", "STSong", "Noto Serif CJK SC", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 16px/1.75 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: inherit; }
.container { width: min(100% - 3rem, 1120px); margin-inline: auto; }
.skip-link { position: fixed; left: 1rem; top: -4rem; z-index: 30; padding: .55rem .8rem; background: var(--ink); color: white; }
.skip-link:focus { top: 0; }
.site-header { border-bottom: 1px solid var(--line); }
.header-inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { display: flex; align-items: center; gap: .65rem; text-decoration: none; }
.brand span { padding-left: .7rem; border-left: 1px solid var(--line); color: var(--ink-soft); font-size: .9rem; }
.back-link { color: var(--green); text-underline-offset: .25em; }
.intro { padding: 5.5rem 0 3.5rem; max-width: 780px; }
.eyebrow, .section-label { margin: 0 0 .45rem; color: var(--green); font-size: .72rem; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; }
h1, h2 { font-family: var(--serif); }
h1 { margin: 0 0 1.25rem; font-size: clamp(2.25rem, 5vw, 4.3rem); line-height: 1.2; letter-spacing: .04em; }
.lede { margin: 0; color: var(--ink-soft); font-size: 1.08rem; max-width: 680px; }
.status-row { display: grid; grid-template-columns: minmax(220px, 34%) 1fr; gap: 3rem; align-items: center; padding: 2rem 2.2rem; border: 1px solid var(--line); border-left: 4px solid var(--green); border-radius: 5px; background: var(--green-soft); }
.status-value { margin: 0; color: var(--green); font: 700 1.65rem/1.3 var(--serif); }
.status-value.unknown { color: var(--amber); }
.status-note { margin: 0; color: var(--ink-soft); }
.principles { display: grid; grid-template-columns: minmax(220px, 34%) 1fr; gap: 3rem; padding-block: 4.5rem; border-bottom: 1px solid var(--line); }
.principles h2, .privacy h2 { margin: 0; font-size: 1.55rem; letter-spacing: .04em; }
.principles ol { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.principles li { display: grid; grid-template-columns: 3rem 9rem 1fr; gap: 1rem; align-items: baseline; padding: 1.15rem 0; border-bottom: 1px solid var(--line); }
.principles li span { color: var(--green); font-family: var(--serif); }
.principles li p { margin: 0; color: var(--ink-soft); }
.privacy { display: grid; grid-template-columns: minmax(180px, 28%) 1fr; gap: 2rem 3rem; padding-block: 4rem; }
.privacy .section-label { grid-row: 1 / 3; }
.privacy p:last-child { margin: .8rem 0 0; color: var(--ink-soft); max-width: 690px; }
.site-footer { border-top: 1px solid var(--line); }
.footer-inner { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 1rem; color: var(--ink-faint); font-size: .84rem; }
.footer-inner p { margin: 0; }
:focus-visible { outline: 3px solid rgba(29, 95, 209, .45); outline-offset: 3px; }
@media (max-width: 700px) {
  .container { width: min(100% - 2rem, 1120px); }
  .brand span { display: none; }
  .intro { padding-block: 3.5rem 2.5rem; }
  .status-row, .principles, .privacy { grid-template-columns: 1fr; gap: 1rem; }
  .principles { padding-block: 3rem; }
  .principles li { grid-template-columns: 2.3rem 1fr; }
  .principles li p { grid-column: 2; }
  .privacy { padding-block: 3rem; }
  .privacy .section-label { grid-row: auto; }
  .footer-inner { min-height: 0; padding-block: 1.2rem; flex-direction: column; align-items: flex-start; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }