:root {
  --purple: #8B3FC4;
  --purple-light: #F4ECFB;
  --purple-deep: #5E1E86;
  --text: #1C1B1F;
  --text-2: #5A5763;
  --bg: #FFFFFF;
  --bg-soft: #F8F5FC;
  --line: #E8E2F0;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--purple); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 24px; }
nav { border-bottom: 1px solid var(--line); background: rgba(255,255,255,.9); position: sticky; top: 0; z-index: 10; }
nav .wrap { display: flex; align-items: center; gap: 12px; height: 60px; }
nav img { width: 30px; height: 30px; border-radius: 7px; }
nav .name { font-weight: 500; font-size: 15px; }
nav .links { margin-left: auto; display: flex; gap: 20px; font-size: 14px; }
nav .links a { color: var(--text-2); }
nav .links a:hover { color: var(--purple); text-decoration: none; }
header.hero { padding: 64px 0 48px; text-align: center; background: linear-gradient(180deg, var(--bg-soft), #fff); }
header.hero img.app { width: 108px; height: 108px; border-radius: 24px; }
header.hero h1 { font-size: 34px; font-weight: 500; margin: 22px 0 10px; letter-spacing: .5px; }
header.hero p.sub { font-size: 16px; color: var(--text-2); margin: 0 auto; max-width: 520px; }
.badge { display: inline-block; margin-top: 22px; font-size: 13px; color: var(--purple-deep); background: var(--purple-light); padding: 7px 16px; border-radius: 999px; }
section { padding: 40px 0; }
h2 { font-size: 20px; font-weight: 500; margin: 0 0 18px; }
h3 { font-size: 15px; font-weight: 500; margin: 26px 0 6px; }
p, li { font-size: 14.5px; color: var(--text-2); }
ul { padding-left: 20px; }
li { margin: 6px 0; }
.shot { width: 100%; border-radius: 12px; border: 1px solid var(--line); display: block; margin: 8px 0 0; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 14px; }
.card { background: var(--bg-soft); border-radius: 12px; padding: 18px 20px; }
.card strong { display: block; font-size: 14.5px; font-weight: 500; color: var(--text); margin-bottom: 4px; }
.card span { font-size: 13.5px; color: var(--text-2); }
table { width: 100%; border-collapse: collapse; font-size: 14px; margin: 10px 0; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); color: var(--text-2); }
th { color: var(--text); font-weight: 500; font-size: 13px; background: var(--bg-soft); }
footer { border-top: 1px solid var(--line); padding: 28px 0 40px; font-size: 13px; color: var(--text-2); }
footer .wrap { display: flex; flex-wrap: wrap; gap: 16px; }
footer a { color: var(--text-2); }
.muted { font-size: 13px; color: #8A8790; }
.actions { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--purple); color: #fff; font-size: 15px; font-weight: 500;
  padding: 12px 26px; border-radius: 10px; border: 1px solid var(--purple);
  transition: background .18s ease, transform .18s ease;
}
.btn:hover { background: var(--purple-deep); border-color: var(--purple-deep); text-decoration: none; transform: translateY(-1px); }
.btn.ghost { background: #fff; color: var(--purple); border-color: var(--line); }
.btn.ghost:hover { background: var(--purple-light); border-color: var(--purple); color: var(--purple-deep); }
.dl { background: var(--bg-soft); border: 1px solid var(--line); border-radius: 16px; padding: 26px 28px; }
.dl-head { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.dl-head strong { font-size: 16px; font-weight: 500; }
.dl-head .tag { font-size: 12px; color: var(--purple-deep); background: #fff; border: 1px solid var(--line); padding: 3px 10px; border-radius: 999px; }
.dl-meta { margin: 10px 0 18px; font-size: 13px; color: #8A8790; }
.dl-meta code { font-size: 12px; background: #fff; border: 1px solid var(--line); border-radius: 6px; padding: 2px 6px; word-break: break-all; }
.steps { counter-reset: step; list-style: none; padding: 0; margin: 14px 0 0; }
.steps li { counter-increment: step; position: relative; padding-left: 34px; margin: 12px 0; }
.steps li::before {
  content: counter(step); position: absolute; left: 0; top: 3px;
  width: 22px; height: 22px; border-radius: 50%; background: #fff; border: 1px solid var(--line);
  color: var(--purple); font-size: 12px; display: flex; align-items: center; justify-content: center;
}
.note { margin-top: 18px; font-size: 13px; color: var(--text-2); background: #fff; border-left: 3px solid var(--purple); border-radius: 0 8px 8px 0; padding: 12px 16px; }
.doc { padding: 36px 0 60px; }
.doc h1 { font-size: 26px; font-weight: 500; margin: 0 0 6px; }
.doc .date { font-size: 13px; color: #8A8790; margin-bottom: 28px; }
@media (max-width: 560px) {
  header.hero h1 { font-size: 26px; }
  nav .links { gap: 14px; font-size: 13px; }
}