/* Apple 官网风格：浅灰底、系统字体、大标题、白色大圆角卡片、蓝色胶囊按钮，深色模式自动适配 */
:root{
  --bg:#f5f5f7;--card:#ffffff;--ink:#1d1d1f;--muted:#6e6e73;--line:#d2d2d7;--hair:#e8e8ed;
  --blue:#0071e3;--blue-h:#0077ed;--ring:rgba(0,113,227,.22);--seg:rgba(118,118,128,.12);
  --ok:#248a3d;--ok-bg:#e8f5ec;--warn:#b25000;--warn-bg:#fff4e5;--bad:#d70015;--nav:rgba(251,251,253,.8);
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Text","SF Pro Display","PingFang SC","Helvetica Neue","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --num:-apple-system,BlinkMacSystemFont,"SF Pro Display","Helvetica Neue",sans-serif;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#000000;--card:#1c1c1e;--ink:#f5f5f7;--muted:#a1a1a6;--line:#424245;--hair:#2c2c2e;
  --blue:#2997ff;--blue-h:#47a6ff;--ring:rgba(41,151,255,.3);--seg:rgba(118,118,128,.24);
  --ok:#30d158;--ok-bg:rgba(48,209,88,.14);--warn:#ff9f0a;--warn-bg:rgba(255,159,10,.14);--bad:#ff453a;--nav:rgba(22,22,23,.8);color-scheme:dark}}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0}
body{background:var(--bg);color:var(--ink);font:17px/1.47 var(--font);letter-spacing:-.022em;-webkit-font-smoothing:antialiased}
.num{font-family:var(--num);font-variant-numeric:tabular-nums}

.gnav{position:sticky;top:0;z-index:5;background:var(--nav);-webkit-backdrop-filter:saturate(180%) blur(20px);backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid var(--hair);padding-top:env(safe-area-inset-top,0px)}
.gnav-in{max-width:980px;margin:0 auto;height:44px;display:flex;align-items:center;justify-content:space-between;
  padding:0 max(22px,env(safe-area-inset-right,0px)) 0 max(22px,env(safe-area-inset-left,0px));font-size:14px}
.brand{font-weight:600;color:var(--ink);text-decoration:none}.gnav-r{color:var(--muted)}
.shop{color:var(--blue);text-decoration:none}.shop::after{content:" ›"}.shop:hover,.brand:hover{text-decoration:underline}
a.btn{display:block;text-align:center;text-decoration:none;box-sizing:border-box}

main{max-width:600px;margin:0 auto;padding:28px max(20px,env(safe-area-inset-right,0px)) 40px max(20px,env(safe-area-inset-left,0px))}
.step{margin:0 0 6px;text-align:center;font-size:14px;color:var(--muted)}
section{display:flex;flex-direction:column;gap:16px}
.hero{text-align:center;padding:12px 0 18px}
.hero h1{margin:0;font-size:clamp(34px,7vw,48px);line-height:1.08;font-weight:600;letter-spacing:-.015em;text-wrap:balance}
.hero .sub{margin:12px auto 0;max-width:30em;font-size:clamp(17px,2.4vw,21px);line-height:1.38;color:var(--muted);text-wrap:balance}
h2{margin:0;font-size:19px;font-weight:600}

.card{background:var(--card);border-radius:18px;padding:26px;display:flex;flex-direction:column;gap:12px}
.row{display:flex;justify-content:space-between;align-items:center;gap:10px}

.seg{display:grid;grid-template-columns:1fr 1fr;background:var(--seg);border-radius:9px;padding:2px;margin-bottom:6px}
.seg button{border:0;background:transparent;font:inherit;font-size:15px;padding:8px;border-radius:7px;color:var(--ink);cursor:pointer}
.seg button[aria-pressed="true"]{background:var(--card);font-weight:600;box-shadow:0 3px 8px rgba(0,0,0,.12),0 3px 1px rgba(0,0,0,.04)}

.f{font-size:14px;font-weight:600;margin:6px 0 -4px}
.i{font:inherit;font-size:17px;padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:var(--card);color:var(--ink);width:100%;transition:border-color .15s,box-shadow .15s}
.i::placeholder{color:var(--muted)}
.i:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 4px var(--ring)}
.i.bad{border-color:var(--bad)}
.upper{text-transform:uppercase}
.hint{margin:0;font-size:14px;color:var(--muted)}
.center{text-align:center}
.err{margin:0;font-size:14px;color:var(--bad)}.ok{margin:0;font-size:14px;color:var(--ok)}

.btn{font:inherit;font-size:17px;font-weight:400;border:0;border-radius:980px;padding:14px 22px;min-height:50px;background:var(--blue);color:#fff;cursor:pointer;width:100%;transition:background .15s}
.btn:hover{background:var(--blue-h)}
.btn:disabled{opacity:.36;cursor:not-allowed}
.btn.loading{opacity:.7}
.link{font:inherit;font-size:17px;border:0;background:transparent;color:var(--blue);cursor:pointer;padding:6px;align-self:center}
.link:hover{text-decoration:underline}
.link::after{content:" ›"}
.btn:focus-visible,.link:focus-visible,.seg button:focus-visible{outline:2px solid var(--blue);outline-offset:3px}

.kv{display:grid;grid-template-columns:auto minmax(0,1fr);gap:10px 18px;margin:0;font-size:15px}
.kv dt{color:var(--muted)}.kv dd{margin:0;text-align:right;min-width:0;overflow-wrap:anywhere}
.kv.lines{gap:0}
.kv.lines dt,.kv.lines dd{padding:12px 0;border-top:1px solid var(--hair)}
.kv.lines dt:first-of-type,.kv.lines dd:first-of-type{border-top:0;padding-top:0}
.strong{font-weight:600;font-size:19px}
.wrap{overflow-wrap:anywhere}
.pill{font-size:12px;font-weight:600;border-radius:980px;padding:3px 10px}
.pill.ok{background:var(--ok-bg);color:var(--ok)}.pill.warn{background:var(--warn-bg);color:var(--warn)}

.amount-card{text-align:center;align-items:center;padding:34px 26px}
.eyebrow{margin:0;font-size:13px;color:var(--muted);font-weight:600;letter-spacing:0}
.big{margin:4px 0 0;font-size:clamp(48px,11vw,64px);line-height:1.05;font-weight:600;letter-spacing:-.02em}
.cap{margin:2px 0 0;font-size:15px;color:var(--ink)}
.compare{display:grid;grid-template-columns:1fr 1fr;width:100%;margin-top:14px;padding-top:18px;border-top:1px solid var(--hair)}
.mid{margin:2px 0 0;font-size:21px;font-weight:600}

.consent{flex-direction:row;align-items:flex-start;gap:12px;font-size:15px;line-height:1.5;cursor:pointer}
.consent input{width:20px;height:20px;margin:1px 0 0;flex:none;accent-color:var(--blue)}

.check{margin:0 auto 14px;width:64px;height:64px}
.check svg{width:100%;height:100%}
.check circle{fill:var(--ok)}
.check path{fill:none;stroke:#fff;stroke-width:4;stroke-linecap:round;stroke-linejoin:round}
.check.pending circle{fill:var(--blue)}
.check.rejected circle{fill:var(--muted)}

.note-box{margin:0;padding:16px 20px;border-radius:14px;background:var(--warn-bg);color:var(--warn);font-size:15px}
.tl{list-style:none;margin:4px 0 0;padding:0;display:grid}
.tl li{display:grid;grid-template-columns:22px 1fr;gap:10px;padding-bottom:14px;font-size:15px}
.tl li::before{content:"";width:10px;height:10px;border-radius:50%;background:var(--line);margin:6px 0 0 5px}
.tl li.done::before{background:var(--ok)}
.tl li.on::before{background:var(--blue);box-shadow:0 0 0 5px var(--ring)}
.tl small{display:block;color:var(--muted);font-size:13px}
.foot-note{margin:0;text-align:center;font-size:14px;color:var(--muted)}
.foot{text-align:center;font-size:12px;color:var(--muted);padding:20px 20px calc(24px + env(safe-area-inset-bottom,0px));border-top:1px solid var(--hair);max-width:980px;margin:0 auto}
@media (max-width:480px){.card{padding:22px 20px;border-radius:16px}.hero{padding:8px 0 10px}}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}