.page-doc{
  min-height:100vh;
  background:linear-gradient(180deg,#f5f5f7 0%,#ebebf0 100%);
  color:var(--label);
}
.page-doc__bar{
  position:sticky;top:0;z-index:10;
  background:rgba(245,245,247,.78);
  backdrop-filter:var(--blur);
  -webkit-backdrop-filter:var(--blur);
  border-bottom:1px solid var(--separator);
}
.page-doc__bar-inner{
  max-width:760px;margin:0 auto;padding:12px 22px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.page-doc__brand{
  display:flex;align-items:center;gap:8px;
  font-size:18px;font-weight:600;letter-spacing:-.03em;color:var(--label);
  text-decoration:none;
}
.page-doc__brand .brand-num{color:var(--accent)}
.page-doc__actions{display:flex;align-items:center;gap:8px}
.page-doc__back{
  font-size:13px;color:var(--accent);text-decoration:none;font-weight:500;
}
.page-doc__lang{
  display:flex;gap:2px;background:var(--fill);border-radius:var(--radius-pill);padding:2px;
}
.page-doc__lang button{
  border:none;background:transparent;color:var(--label-secondary);
  font-size:12px;font-weight:600;padding:5px 10px;border-radius:var(--radius-pill);
}
.page-doc__lang button.on{background:#fff;color:var(--label);box-shadow:var(--shadow-sm)}

.page-doc__main{max-width:760px;margin:0 auto;padding:36px 22px 72px}
.page-doc__main h1{
  margin:0 0 10px;font-size:34px;font-weight:700;letter-spacing:-.04em;line-height:1.1;
}
.page-doc__meta{margin:0 0 28px;font-size:14px;color:var(--label-tertiary)}
.page-doc__main h2{
  margin:32px 0 10px;font-size:20px;font-weight:600;letter-spacing:-.02em;
}
.page-doc__main p,.page-doc__main li{
  font-size:15px;line-height:1.65;color:var(--label-secondary);letter-spacing:-.01em;
}
.page-doc__main ul,.page-doc__main ol{padding-left:20px;margin:0 0 16px}
.page-doc__main a{color:var(--accent)}
.page-doc__card{
  background:rgba(255,255,255,.82);border-radius:var(--radius-xl);
  padding:22px;box-shadow:var(--shadow-sm);margin:18px 0;
}
.page-doc__card--accent{border:1px solid rgba(0,113,227,.15);background:rgba(0,113,227,.04)}
.page-doc__card--warm{border:1px solid rgba(255,59,48,.15);background:rgba(255,59,48,.04)}
.page-doc__email{margin:0;font-size:17px;font-weight:600;letter-spacing:-.01em}
.page-doc__email a{color:var(--accent);text-decoration:none;word-break:break-all}
.page-doc__email a:hover{text-decoration:underline}
.page-doc__tag{
  display:inline-block;margin-left:8px;padding:2px 8px;
  font-size:11px;font-weight:600;color:var(--label-tertiary);
  background:var(--fill);border-radius:var(--radius-pill);vertical-align:middle;
}
.page-doc__qr-grid{
  display:flex;flex-wrap:wrap;gap:20px;margin:16px 0 8px;
}
.page-doc__qr{margin:0;text-align:center}
.page-doc__qr figcaption{
  margin-top:10px;font-size:13px;font-weight:500;color:var(--label-secondary);
}
.page-doc__qr-slot{
  width:160px;height:160px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:8px;
  background:rgba(255,255,255,.9);border:2px dashed var(--separator);
  border-radius:var(--radius-lg);color:var(--label-tertiary);
}
.page-doc__qr-slot img{display:block;width:100%;height:100%;object-fit:contain;border-radius:calc(var(--radius-lg) - 2px)}
.page-doc__qr-icon{font-size:15px;font-weight:600;color:var(--label-secondary)}
.page-doc__qr-hint{font-size:11px;line-height:1.4;padding:0 12px;text-align:center}
.page-doc__footer{
  max-width:760px;margin:0 auto;padding:0 22px 48px;
  font-size:12px;color:var(--label-tertiary);text-align:center;line-height:1.8;
}
.page-doc__footer a{color:var(--label-secondary);margin:0 6px}
.page-doc [data-lang]{display:none}
.page-doc[data-locale="zh"] [data-lang="zh"],
.page-doc[data-locale="en"] [data-lang="en"]{display:block}
.page-doc[data-locale="zh"] span[data-lang="zh"],
.page-doc[data-locale="en"] span[data-lang="en"]{display:inline}
.page-doc[data-locale="zh"] li[data-lang="zh"],
.page-doc[data-locale="en"] li[data-lang="en"]{display:list-item}

@media (max-width:720px){
  .page-doc__main h1{font-size:28px}
  .page-doc__qr-grid{justify-content:center}
}