:root{
  --violet:#6A2FE0;--violet-ink:#6A2FE0;--surface:#FFFFFF;--raised:#F5F4F8;--ink:#14121C;--muted:#5F5B6B;--hair:#E4E2EA;
  --ok:#1F7A4D;--ok-bg:#E8F4EE;--no:#B3261E;--no-bg:#FBEAE8;
  --font:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --latin:"Manrope",system-ui,-apple-system,"Segoe UI",sans-serif;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--violet-ink:#B8A2FF;--surface:#0B0920;--raised:#16122E;--ink:#F4F2FA;--muted:#A6A1B8;--hair:#2A2640;--ok:#7AD3A4;--ok-bg:#12291F;--no:#FF9C93;--no-bg:#341613}}
:root[data-theme="dark"]{--violet-ink:#B8A2FF;--surface:#0B0920;--raised:#16122E;--ink:#F4F2FA;--muted:#A6A1B8;--hair:#2A2640;--ok:#7AD3A4;--ok-bg:#12291F;--no:#FF9C93;--no-bg:#341613}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0;background:var(--surface);color:var(--ink);font-family:var(--font);-webkit-text-size-adjust:100%}
body{min-height:100dvh;display:flex;flex-direction:column;padding-bottom:env(safe-area-inset-bottom)}
button{font:inherit;color:inherit}
.bar{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--hair);position:sticky;top:0;background:var(--surface);z-index:2}
.brand{font-weight:700;text-decoration:none;color:var(--ink);font-size:17px}
.brand span{font-family:var(--latin);font-weight:800;letter-spacing:.08em;color:var(--violet-ink);font-size:13px;margin-left:4px}
.ctl{display:flex;gap:8px;align-items:center}
.seg{display:flex;border:1px solid var(--hair);border-radius:999px;overflow:hidden}
.seg button,.aux{border:0;background:none;min-width:44px;min-height:36px;font-family:var(--latin);font-weight:700;font-size:13px;cursor:pointer}
.seg button[aria-pressed="true"]{background:var(--violet);color:#fff}
.aux{border:1px solid var(--hair);border-radius:999px;font-family:var(--font)}
.aux[aria-pressed="true"]{border-color:var(--violet);color:var(--violet-ink)}
.steps{padding:10px 16px 0}
.steps ol{list-style:none;margin:0;padding:0;display:flex;gap:6px}
.steps li{flex:1;height:3px;border-radius:2px;background:var(--hair)}
.steps li.on{background:var(--violet)}
.steps li span{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.main{flex:1;width:100%;max-width:560px;margin:0 auto;padding:16px 16px 24px;display:flex;flex-direction:column;gap:14px}
.boot{color:var(--muted)}
.kicker{font-size:12px;letter-spacing:.06em;color:var(--violet-ink);font-weight:700;margin:0}
h1{font-size:20px;line-height:1.45;margin:0;font-weight:700}
h1 .lat,.opt .lat{font-family:var(--latin)}
.zh{display:block;color:var(--muted);font-size:14px;font-weight:400;line-height:1.5;margin:4px 0 0}
.fig{margin:0;border-radius:12px;overflow:hidden;background:var(--raised);aspect-ratio:4/3;display:flex;align-items:center;justify-content:center}
.fig img{width:100%;height:100%;object-fit:contain;display:block}
.opts{display:flex;flex-direction:column;gap:10px;margin:0;padding:0;list-style:none}
.opt{width:100%;text-align:start;border:1px solid var(--hair);background:var(--surface);border-radius:12px;padding:14px 14px 14px 12px;display:flex;gap:12px;align-items:flex-start;min-height:56px;cursor:pointer;line-height:1.45}
.opt:focus-visible,.btn:focus-visible,.chip:focus-visible{outline:2px solid var(--violet);outline-offset:2px}
.opt b{flex:none;width:26px;height:26px;border-radius:50%;border:1px solid var(--hair);display:inline-flex;align-items:center;justify-content:center;font-family:var(--latin);font-size:13px}
.opt.right{border-color:var(--ok);background:var(--ok-bg)}
.opt.picked.wrong{border-color:var(--no);background:var(--no-bg)}
.opt[disabled]{cursor:default}
.verdict{margin:0;font-weight:700}
.verdict.ok{color:var(--ok)}.verdict.no{color:var(--no)}
.card{border:1px solid var(--hair);border-radius:14px;padding:14px;background:var(--raised);display:flex;flex-direction:column;gap:8px}
.card h2{font-size:16px;margin:0}
.card p{margin:0;line-height:1.6}
.lure{display:flex;flex-direction:column;gap:4px;padding-top:8px;border-top:1px solid var(--hair)}
.lure:first-of-type{border-top:0;padding-top:0}
.tag{display:inline-block;font-size:12px;font-weight:700;color:var(--violet-ink);border:1px solid currentColor;border-radius:999px;padding:1px 8px;margin-inline-end:6px}
.tag.weak{color:var(--muted)}
ol.reason{margin:0;padding-inline-start:20px;line-height:1.6;display:flex;flex-direction:column;gap:4px}
.chips{display:flex;flex-direction:column;gap:8px}
.chip{border:1px solid var(--hair);background:var(--surface);border-radius:12px;padding:12px;text-align:start;min-height:48px;cursor:pointer;line-height:1.4}
.chip[aria-pressed="true"]{border-color:var(--violet);color:var(--violet-ink)}
.pat{display:flex;justify-content:space-between;gap:12px;font-size:14px;padding:6px 0;border-top:1px solid var(--hair)}
.pat:first-child{border-top:0}
.pat em{font-style:normal;color:var(--muted);text-align:end}
.note{font-size:13px;color:var(--muted);line-height:1.5;margin:0}
.dock{position:sticky;bottom:0;background:linear-gradient(to top,var(--surface) 70%,transparent);padding:12px 0 calc(8px + env(safe-area-inset-bottom));display:flex;flex-direction:column;gap:8px;margin-top:auto}
.btn{width:100%;min-height:52px;border-radius:14px;border:0;background:var(--violet);color:#fff;font-weight:700;font-size:16px;cursor:pointer}
.btn.ghost{background:none;color:var(--ink);border:1px solid var(--hair)}
.foot{padding:12px 16px 20px;border-top:1px solid var(--hair)}
.foot p{max-width:560px;margin:0 auto;font-size:12px;color:var(--muted);line-height:1.5}