/* 万基 iOS 产品页公共样式：沿用官网设计语言（间距、配色、字重） */
:root { --text:#111827; --muted:#667085; --line:rgba(92,103,141,.14); --primary:#635bff; --ink:#1f2430; }
* { box-sizing:border-box; }
body { margin:0; color:var(--text); font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif; background:linear-gradient(180deg,#fff 0%,#f8faff 42%,#fff 100%); }
a { color:var(--primary); text-decoration:none; }
a:hover { text-decoration:underline; }
.site-header { position:sticky; top:0; z-index:10; border-bottom:1px solid rgba(229,233,244,.65); background:rgba(255,255,255,.82); backdrop-filter:blur(18px); }
.header-inner { display:flex; align-items:center; justify-content:space-between; gap:16px; width:min(880px,calc(100% - 40px)); min-height:68px; margin:0 auto; }
.brand { display:inline-flex; align-items:center; gap:10px; font-weight:800; color:var(--text); }
.brand-mark { width:28px; height:28px; background-color:var(--ink); -webkit-mask:url("/assets/images/brand-mark.svg?v=2") center/contain no-repeat; mask:url("/assets/images/brand-mark.svg?v=2") center/contain no-repeat; }
.brand-text { display:grid; line-height:1.05; }
.brand-text small { color:var(--muted); font-size:10px; font-weight:700; letter-spacing:.08em; }
.header-actions { display:flex; align-items:center; gap:14px; }
.back { font-size:14px; font-weight:650; white-space:nowrap; }
/* 语言切换器：选项由 i18n.js 按 LANGS 生成，加语言不用改样式 */
.lang-switch select {
  appearance:none; -webkit-appearance:none;
  padding:6px 30px 6px 12px; border:1px solid var(--line); border-radius:999px;
  background:rgba(255,255,255,.9) url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='%23667085' d='M4.5 6.5 8 10l3.5-3.5z'/%3E%3C/svg%3E") no-repeat right 8px center/14px;
  font-family:inherit; font-size:13px; font-weight:700; color:var(--ink); cursor:pointer;
}
.lang-switch select:focus-visible { outline:2px solid var(--primary); outline-offset:2px; }
main { width:min(880px,calc(100% - 40px)); margin:0 auto; padding:clamp(32px,5vw,56px) 0 64px; }
h1 { margin:0 0 6px; font-size:clamp(28px,4vw,38px); font-weight:900; }
.updated { margin:0 0 32px; color:var(--muted); font-size:14px; }
.lead { margin:0 0 28px; color:#3b4252; font-size:16px; line-height:1.9; }
h2 { margin:34px 0 12px; font-size:20px; font-weight:850; }
h3 { margin:22px 0 6px; font-size:16px; font-weight:800; }
p, li { color:#3b4252; font-size:15px; line-height:1.9; }
ul, ol { margin:10px 0; padding-left:22px; }
li { margin:6px 0; }
.contact { margin-top:14px; padding:18px 20px; border:1px solid var(--line); border-radius:14px; background:rgba(255,255,255,.9); }
.contact p { margin:6px 0; }
.note { margin-top:22px; padding:14px 18px; border-left:3px solid var(--primary); border-radius:0 10px 10px 0; background:rgba(99,91,255,.05); }
.note p { margin:0; font-size:14px; }
footer { border-top:1px solid rgba(229,233,244,.78); background:rgba(255,255,255,.8); }
.footer-inner { width:min(880px,calc(100% - 40px)); margin:0 auto; padding:24px 0; color:#7a8395; font-size:13px; display:flex; flex-wrap:wrap; gap:8px 18px; align-items:center; justify-content:space-between; }
.footer-inner a { color:#7a8395; }
@media (max-width:520px) { .header-inner { flex-wrap:wrap; padding:10px 0; } }