:root{--bg:#f6f7fb;--fg:#1c2230;--card:#fff;--mut:#6b7385;--line:#e3e6ee;--pri:#1f6feb;--s1:#e8a317;--s2:#2da44e;--warn:#c4521a;--r:14px}
[data-theme=dark]{--bg:#0f1218;--fg:#e6e9f0;--card:#191e28;--mut:#8d95a8;--line:#2a3140;--pri:#4d8dff}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.5 system-ui,-apple-system,"PingFang TC","Microsoft JhengHei",sans-serif}
body{padding-bottom:calc(70px + env(safe-area-inset-bottom))}
.hidden{display:none!important}
.top{position:sticky;top:0;z-index:5;display:flex;justify-content:space-between;align-items:center;padding:10px 16px;background:var(--card);border-bottom:1px solid var(--line)}
.top h1{margin:0;font-size:20px}.top h1 span{color:var(--pri)}
.top-r{display:flex;gap:6px;align-items:center}
.badge{font-size:12px;padding:2px 8px;border-radius:99px;background:var(--warn);color:#fff}
main,#auth{max-width:820px;margin:0 auto;padding:12px}
button,select,input{font:inherit;color:inherit;border-radius:10px;border:1px solid var(--line);background:var(--card);padding:9px 12px}
button{cursor:pointer}button:active{transform:scale(.97)}
button.icon{border:none;background:none;font-size:20px;padding:4px 8px}
.primary{background:var(--pri);color:#fff;border-color:var(--pri)}
.s1{border-color:var(--s1);color:var(--s1)}.s2{border-color:var(--s2);color:var(--s2)}
.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.row>select{flex:1;min-width:110px}
.center{justify-content:center;text-align:center}
.filters{display:flex;flex-direction:column;gap:8px;margin-bottom:10px}
.filters.row{flex-direction:row}
#q{width:100%}
.muted{color:var(--mut)}.small{font-size:13px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px;margin-bottom:12px}
.auth-card{max-width:380px;margin:40px auto}.auth-card form{display:flex;flex-direction:column;gap:10px}
.msg{min-height:1.4em;margin:4px 0;color:var(--warn)}.msg.ok{color:var(--s2)}
.switch{text-align:center}a{color:var(--pri)}
.list{list-style:none;margin:0;padding:0}
.list li{display:flex;gap:10px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:10px 12px;margin-bottom:6px;cursor:pointer}
.list .w{font-weight:600;min-width:120px}.list .z{flex:1;color:var(--mut);font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tag{font-size:11px;padding:1px 7px;border-radius:99px;background:var(--line);color:var(--mut);white-space:nowrap}
.dot{width:10px;height:10px;border-radius:50%;background:var(--line);flex:none}.dot.st1{background:var(--s1)}.dot.st2{background:var(--s2)}
.warn{color:var(--warn);font-size:14px}
.flash{perspective:1000px;height:300px;margin:8px 0 14px;touch-action:pan-y}
.flash-inner{position:relative;width:100%;height:100%;transition:transform .45s;transform-style:preserve-3d;cursor:pointer}
.flash.flipped .flash-inner{transform:rotateY(180deg)}
.face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;background:var(--card);border:1px solid var(--line);border-radius:20px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:10px;padding:20px;text-align:center;overflow:auto}
.back{transform:rotateY(180deg)}
.big{font-size:40px;font-weight:700}.zh{font-size:26px;font-weight:600}
.hint{position:absolute;bottom:12px;font-size:12px;color:var(--mut)}
.qq{font-size:24px;font-weight:600;margin:10px 0 16px}
.opts{display:grid;gap:8px}.opts button{text-align:left;padding:12px}
.opts .right{background:var(--s2);color:#fff;border-color:var(--s2)}.opts .wrong{background:var(--warn);color:#fff;border-color:var(--warn)}
.bar{height:10px;background:var(--line);border-radius:99px;overflow:hidden;display:flex}
.bar i{display:block;height:100%}.bar .b2{background:var(--s2)}.bar .b1{background:var(--s1)}
.subrow{display:grid;grid-template-columns:70px 1fr 70px;gap:10px;align-items:center;margin:8px 0;font-size:14px}
.overall{font-size:32px;font-weight:700}
dialog{border:none;border-radius:var(--r);background:var(--card);color:var(--fg);width:min(92vw,520px);padding:20px}
dialog::backdrop{background:#0008}
dialog h2{margin:0 0 4px}dialog .row{margin-top:14px}.close{margin-top:10px;width:100%}
.tabs{position:fixed;bottom:0;left:0;right:0;display:flex;background:var(--card);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom);z-index:5}
.tabs button{flex:1;border:none;border-radius:0;background:none;display:flex;flex-direction:column;align-items:center;font-size:20px;padding:8px 0;color:var(--mut)}
.tabs button span{font-size:12px}.tabs button.on{color:var(--pri)}
@media (min-width:900px){.tabs{top:56px;bottom:auto;left:calc(50% - 410px - 110px);right:auto;width:100px;flex-direction:column;border:1px solid var(--line);border-radius:var(--r)}body{padding-bottom:20px}}