:root {
  --cream: #f6f1e8;
  --ink: #202521;
  --muted: #73786e;
  --green: #22332a;
  --orange: #ff7a45;
  --line: #e5dccd;
  --card: #fffdf8;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 88% 4%, rgba(255, 122, 69, .10), transparent 30%),
    radial-gradient(circle at 4% 96%, rgba(111, 139, 114, .10), transparent 32%),
    var(--cream);
  color: var(--ink);
  font-family: "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Microsoft YaHei", sans-serif;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--green); text-decoration-color: rgba(34, 51, 42, .35); }

.topbar {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 253, 248, .72);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar-inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--green);
  font-weight: 700;
  text-decoration: none;
  font-size: 15px;
}

.brand svg { width: 26px; height: 26px; border-radius: 7px; display: block; }

.topnav { display: flex; gap: 16px; font-size: 13px; }
.topnav a { color: var(--muted); text-decoration: none; }
.topnav a[aria-current="page"] { color: var(--green); font-weight: 700; }

.doc {
  max-width: 860px;
  margin: 0 auto;
  padding: 36px 20px 64px;
}

h1 {
  font-size: 30px;
  line-height: 1.35;
  letter-spacing: -.5px;
  margin: 0 0 10px;
}

.meta {
  color: var(--muted);
  font-size: 13px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  margin-bottom: 6px;
}

.lead {
  margin: 18px 0 8px;
  padding: 16px 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  font-size: 14.5px;
  color: #3c443d;
}

h2 {
  font-size: 19px;
  margin: 40px 0 12px;
  padding-left: 12px;
  border-left: 4px solid var(--orange);
  line-height: 1.4;
}

h3 {
  font-size: 15.5px;
  margin: 24px 0 8px;
}

p, li { font-size: 14.5px; }

ul, ol { padding-left: 22px; }
li { margin: 6px 0; }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 14px 0;
  font-size: 13.5px;
  background: var(--card);
  display: block;
  overflow-x: auto;
}

th, td {
  border: 1px solid var(--line);
  padding: 9px 11px;
  text-align: left;
  vertical-align: top;
  min-width: 90px;
}

th { background: #f1eadf; font-weight: 700; white-space: nowrap; }

.callout {
  margin: 16px 0;
  padding: 14px 16px;
  border-radius: 14px;
  background: #fff8ef;
  border: 1px solid var(--line);
  font-size: 14px;
}

.callout strong { color: var(--green); }

.steps { counter-reset: step; list-style: none; padding-left: 0; }
.steps li { position: relative; padding-left: 34px; margin: 10px 0; }
.steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0;
  top: 2px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--green);
  color: #fff8ef;
  font-size: 12px;
  font-weight: 700;
  display: grid;
  place-items: center;
}

.page-footer {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12.5px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  align-items: center;
}

.page-footer a { color: var(--muted); }

@media (max-width: 560px) {
  h1 { font-size: 24px; }
  .doc { padding: 26px 16px 56px; }
  .topbar-inner { padding: 12px 16px; }
  .topnav { gap: 12px; font-size: 12.5px; }
  table { font-size: 12.5px; }
  th, td { padding: 7px 9px; }
}