:root {
  color-scheme: light;
  --ink: #1d2925;
  --body: #53615c;
  --muted: #73807a;
  --bg: #f5f2eb;
  --panel: #fffdf8;
  --line: #d9ded8;
  --accent: #1e6b55;
  --accent-soft: #e2efe9;
  --warning: #8a5b1c;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  color: var(--body);
  background: var(--bg);
  font-family: Arial, "Microsoft YaHei", sans-serif;
  line-height: 1.7;
}
a { color: var(--accent); }
.page-shell { width: min(1120px, calc(100% - 36px)); margin: 0 auto; }
.site-header {
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  position: sticky;
  top: 0;
  z-index: 5;
  backdrop-filter: blur(14px);
}
.header-inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 11px; color: var(--ink); text-decoration: none; font-weight: 700; }
.brand img { width: 38px; height: 38px; border-radius: 50%; object-fit: contain; }
.brand small { display: block; color: var(--muted); font-size: 11px; letter-spacing: .08em; font-weight: 600; }
.nav { display: flex; flex-wrap: wrap; gap: 18px; font-size: 14px; }
.nav a { color: var(--body); text-decoration: none; }
.nav a:hover { color: var(--ink); }
.hero { padding: 72px 0 52px; }
.eyebrow { color: var(--accent); font-size: 12px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; }
h1, h2, h3 { color: var(--ink); line-height: 1.2; margin: 0; }
h1 { max-width: 800px; font-size: clamp(2.25rem, 6vw, 4.4rem); letter-spacing: -.035em; }
h2 { font-size: clamp(1.75rem, 3vw, 2.7rem); letter-spacing: -.025em; }
h3 { font-size: 1.18rem; }
.hero p { max-width: 720px; font-size: 1.08rem; }
.lede { color: var(--body); margin: 22px 0 0; }
.actions { display: flex; flex-wrap: wrap; gap: 11px; margin-top: 28px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 42px; padding: 8px 16px; border: 1px solid var(--line); border-radius: 7px; text-decoration: none; color: var(--ink); background: var(--panel); font-size: 14px; font-weight: 700; }
.button.primary { border-color: var(--accent); color: #fff; background: var(--accent); }
.section { padding: 56px 0; border-top: 1px solid var(--line); }
.section-head { max-width: 720px; margin-bottom: 26px; }
.section-head p { margin: 12px 0 0; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.panel { padding: 23px; border: 1px solid var(--line); border-radius: 7px; background: var(--panel); }
.panel p { margin: 9px 0 0; }
.panel ul { margin: 12px 0 0; padding-left: 20px; }
.signal { border-left: 4px solid var(--accent); background: var(--accent-soft); }
.notice { border-left: 4px solid #c58b39; background: #fff5df; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 7px; background: var(--panel); }
table { width: 100%; border-collapse: collapse; min-width: 600px; }
th, td { padding: 13px 15px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--ink); font-size: 13px; background: #f0f3ed; }
tr:last-child td { border-bottom: 0; }
code { padding: 2px 5px; border-radius: 4px; background: #e9eee8; color: #1c4f3f; font-size: .92em; }
pre { overflow-x: auto; margin: 14px 0 0; padding: 16px; border-radius: 6px; background: #1f2925; color: #f2f5ef; font-size: 13px; line-height: 1.6; }
.footer { padding: 36px 0 58px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 10px; }
.footer a { color: var(--body); }
@media (max-width: 720px) {
  .page-shell { width: min(100% - 28px, 1120px); }
  .header-inner { align-items: flex-start; padding: 14px 0; flex-direction: column; gap: 9px; }
  .nav { gap: 10px 15px; }
  .hero { padding: 48px 0 38px; }
  .grid, .grid.two { grid-template-columns: 1fr; }
  .section { padding: 42px 0; }
}