:root {
  --ink: #14202b;
  --muted: #5c6b78;
  --rule: #d7dee5;
  --paper: #f5f7f8;
  --sea: #16324a;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; color: var(--ink); background: var(--paper); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
button, input, textarea { font: inherit; }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 2px solid var(--sea); outline-offset: 2px; }
.wrap { width: min(1040px, calc(100% - 48px)); margin: 0 auto; }
.top {
  height: 64px; display: flex; align-items: center;
  background: var(--sea); color: #f4f7fa;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 650; letter-spacing: -.01em; }
.mark {
  width: 28px; height: 28px; border-radius: 4px; background: #f4f7fa; color: var(--sea);
  display: grid; place-items: center; font-size: 13px; font-weight: 700;
}
.nav { display: flex; align-items: center; gap: 22px; margin-left: auto; font-size: 14px; color: #d5e0e8; }
.nav a:hover { color: #fff; }
.pill {
  display: inline-flex; align-items: center; justify-content: center;
  height: 40px; padding: 0 16px; border-radius: 4px; border: 1px solid transparent;
  cursor: pointer; background: transparent; font-weight: 600;
}
.pill-dark { background: var(--sea); color: #fff; }
.pill-ghost { border-color: var(--rule); background: #fff; color: var(--ink); }
.top .pill-ghost { border-color: rgba(255,255,255,.35); background: transparent; color: #fff; }
.menu { display: none; margin-left: 12px; }
.hero { background: var(--sea); color: #f4f7fa; padding: 28px 0 52px; }
.hero h1 {
  font-family: "Songti SC", "STSong", "SimSun", serif;
  font-size: 64px; line-height: 1.12; font-weight: 600; letter-spacing: -.03em; margin: 0;
}
.lead { max-width: 36em; margin: 18px 0 0; color: #c5d2dc; font-size: 18px; line-height: 1.7; }
.cta { display: flex; gap: 10px; margin-top: 28px; flex-wrap: wrap; }
.hero .pill-dark { background: #f4f7fa; color: var(--sea); }
.hero .pill-ghost { border-color: rgba(255,255,255,.4); background: transparent; color: #fff; }
.metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin-top: 48px; border-top: 1px solid rgba(255,255,255,.18); }
.metrics div { padding: 16px 20px 0 0; }
.metrics b { display: block; font-size: 15px; font-weight: 650; }
.metrics span { color: #c5d2dc; font-size: 13px; }
section { padding: 56px 0; }
h2 {
  font-family: "Songti SC", "STSong", "SimSun", serif;
  font-size: 32px; margin: 0; font-weight: 600; letter-spacing: -.02em;
}
.sub { color: var(--muted); margin: 8px 0 0; line-height: 1.6; }
.features { margin-top: 8px; }
.feature {
  display: grid; grid-template-columns: 148px 1fr; gap: 24px; align-items: baseline;
  padding: 18px 0; border-bottom: 1px solid var(--rule); background: none;
}
.feature h3 { margin: 0; font-size: 16px; font-family: inherit; }
.feature p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.6; }
.plans { margin-top: 20px; border-top: 1px solid var(--rule); }
.plan {
  display: grid; grid-template-columns: 160px 120px 1fr auto; gap: 16px; align-items: center;
  padding: 18px 0; border-bottom: 1px solid var(--rule); background: transparent;
}
.plan.year { background: #e7eef3; margin: 0 -12px; padding: 18px 12px; }
.tag { display: block; color: var(--muted); font-size: 12px; margin-bottom: 4px; }
.plan h3 { margin: 0; font-size: 18px; font-family: inherit; }
.price { margin: 0; font-size: 28px; font-weight: 650; letter-spacing: -.03em; }
.price small { font-size: 14px; color: var(--muted); font-weight: 500; }
.plan ul { display: flex; gap: 18px; margin: 0; padding: 0; list-style: none; color: #31414d; font-size: 14px; }
.band {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  border-top: 1px solid var(--rule); padding-top: 28px;
}
footer { color: var(--muted); font-size: 13px; }
.foot { display: flex; justify-content: space-between; padding: 8px 0 40px; }
.page { padding: 48px 0 72px; }
.card { background: #fff; border: 1px solid var(--rule); border-radius: 8px; padding: 20px; }
.muted { color: var(--muted); }
.suburl {
  width: 100%; margin-top: 8px; border: 1px solid var(--rule); border-radius: 4px;
  padding: 10px 12px; background: #fff; color: var(--ink);
}
.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-top: 12px; }
.warn { background: #fdecea; color: #8a2418; border-radius: 4px; padding: 10px 12px; }
.ok { background: #e8f6ee; color: #14633a; border-radius: 4px; padding: 10px 12px; }
.split { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: start; }
.auth-body { min-height: 100vh; background: var(--paper); }
.auth { width: min(400px, calc(100% - 32px)); margin: 80px auto; }
.auth-card { background: #fff; border: 1px solid var(--rule); border-radius: 8px; padding: 8px 22px 22px; }
.auth-card h1 { font-family: "Songti SC", "STSong", "SimSun", serif; font-size: 28px; padding-top: 16px; }
label { display: block; margin-top: 14px; font-size: 13px; color: #31414d; }
input, textarea { width: 100%; margin-top: 6px; border: 1px solid #c9d2da; border-radius: 4px; padding: 10px 12px; background: #fff; }
.full { width: 100%; margin-top: 16px; }
.shell { min-height: 100vh; display: grid; grid-template-columns: 220px 1fr; background: var(--paper); }
.side {
  background: #fff; border-right: 1px solid var(--rule); padding: 20px 14px;
  display: flex; flex-direction: column; gap: 18px; position: sticky; top: 0; height: 100vh;
}
.side nav { display: flex; flex-direction: column; gap: 2px; }
.side nav a { padding: 9px 12px; color: #31414d; font-size: 14px; border-left: 2px solid transparent; }
.side nav a.on { border-left-color: var(--sea); color: var(--sea); font-weight: 650; }
.side-foot { margin-top: auto; }
.main { padding: 28px 32px 64px; max-width: 1040px; }
.app h1, .app h2 { font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; }
.app h1 { font-size: 22px; }
.hello { display: flex; justify-content: space-between; align-items: flex-end; gap: 12px; margin-bottom: 18px; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.stat b { display: block; margin-top: 6px; font-size: 20px; font-weight: 650; }
.layout { display: grid; grid-template-columns: 1.4fr 240px; gap: 12px; margin-top: 12px; }
.qr { display: grid; place-items: center; min-height: 220px; }
.qr img { border: 1px solid var(--rule); border-radius: 4px; background: #fff; }
.shop { display: grid; gap: 0; margin-top: 8px; }
.sku { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 12px 0; border-top: 1px solid var(--rule); }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 12px; }
.line { display: flex; justify-content: space-between; gap: 12px; padding: 10px 0; border-top: 1px solid var(--rule); font-size: 14px; }
.bar { height: 4px; background: #e3e8ec; margin-top: 8px; }
.bar span { display: block; height: 100%; background: var(--sea); }
.docs { display: grid; grid-template-columns: 160px 1fr; gap: 24px; }
.docnav a { display: block; padding: 8px 0; color: #31414d; font-size: 14px; }
.docnav a:hover { color: var(--sea); }
.doc { background: #fff; border: 1px solid var(--rule); border-radius: 8px; padding: 8px 22px 18px; }
.doc h2 { font-size: 18px; margin: 18px 0 8px; }
.doc p, .doc li { color: #31414d; line-height: 1.7; font-size: 15px; }
.doc ol { margin: 0; padding-left: 18px; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 10px 8px; border-top: 1px solid var(--rule); vertical-align: middle; }
@media (max-width: 860px) {
  .nav { display: none; }
  .menu { display: block; }
  .hero h1 { font-size: 40px; }
  .metrics, .split, .stats, .layout, .two, .docs, .shell { display: block; }
  .feature, .plan, .sku, .band { display: block; }
  .plan .pill, .band .pill, .sku .pill { margin-top: 10px; }
  .plan.year { margin: 0; }
  .side { position: static; height: auto; border-right: 0; border-bottom: 1px solid var(--rule); }
  .side nav { flex-direction: row; overflow: auto; }
  .plan, .card, .stat { margin-top: 10px; }
}