.app-main[data-v-e11d7173]{flex:1;width:100%}:root{--ink: #1a2230;--ink-2: #4b5566;--ink-3: #8b94a3;--paper: #f4f1ea;--paper-2: #ece7db;--card: #ffffff;--line: #e2ddd0;--brand: #1f3a5f;--brand-2: #2d5380;--brand-soft: #e6ecf3;--amber: #c2620c;--amber-soft: #fbeedd;--ok: #15803d;--ok-soft: #def0e3;--bad: #b91c1c;--bad-soft: #f8e0e0;--radius: 14px;--radius-sm: 9px;--shadow: 0 1px 2px rgba(26,34,48,.04), 0 6px 22px -10px rgba(26,34,48,.14);--shadow-lg: 0 12px 40px -12px rgba(26,34,48,.24);--space: 16px;--maxw: 760px;--tabbar-h: 62px;--safe-b: env(safe-area-inset-bottom, 0px);--font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;--mono: "SF Mono", "JetBrains Mono", "Roboto Mono", ui-monospace, monospace}@media (prefers-color-scheme: dark){:root{--ink: #e8ecf2;--ink-2: #aab4c2;--ink-3: #6b7585;--paper: #11161f;--paper-2: #0c111a;--card: #1a2230;--line: #2a3343;--brand: #6fa8d6;--brand-2: #8cc0e6;--brand-soft: #1e2d40;--amber: #e0a44e;--amber-soft: #2a2418;--ok: #5fc788;--ok-soft: #16291d;--bad: #ef6b6b;--bad-soft: #2a181a;--shadow: 0 1px 2px rgba(0,0,0,.3), 0 8px 26px -10px rgba(0,0,0,.5)}}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body,#app{height:100%}body{margin:0;font-family:var(--font);color:var(--ink);background:var(--paper);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;font-size:16px;line-height:1.6}h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em}p{margin:0}a{color:var(--brand);text-decoration:none}button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}input,select,textarea{font-family:inherit;font-size:16px}.app-shell{min-height:100%;display:flex;flex-direction:column}.view{width:100%;max-width:var(--maxw);margin:0 auto;padding:16px 16px calc(var(--tabbar-h) + var(--safe-b) + 24px);flex:1}.topbar{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--paper) 88%,transparent);-webkit-backdrop-filter:saturate(180%) blur(12px);backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line)}.topbar-inner{max-width:var(--maxw);margin:0 auto;padding:12px 16px;display:flex;align-items:center;gap:12px}.topbar h1{font-size:18px}.topbar .sub{font-size:12px;color:var(--ink-3)}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}.stack>*+*{margin-top:12px}.row{display:flex;align-items:center;gap:10px}.between{justify-content:space-between}.muted{color:var(--ink-3)}.small{font-size:13px}.tiny{font-size:12px}.mono{font-family:var(--mono)}.bold{font-weight:700}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 18px;border-radius:var(--radius-sm);font-weight:600;font-size:15px;transition:transform .08s,background .15s;min-height:44px}.btn:active{transform:scale(.98)}.btn-primary{background:var(--brand);color:#fff}.btn-primary:disabled{opacity:.45}.btn-ghost{background:var(--brand-soft);color:var(--brand)}.btn-line{background:var(--card);border:1px solid var(--line);color:var(--ink)}.btn-block{width:100%}.btn-danger{background:var(--bad-soft);color:var(--bad)}.tag{display:inline-flex;align-items:center;padding:2px 9px;border-radius:20px;font-size:12px;font-weight:600;background:var(--paper-2);color:var(--ink-2)}.tag-brand{background:var(--brand-soft);color:var(--brand)}.tag-ok{background:var(--ok-soft);color:var(--ok)}.tag-bad{background:var(--bad-soft);color:var(--bad)}.tag-amber{background:var(--amber-soft);color:var(--amber)}.q-stem{font-size:17px;line-height:1.75;color:var(--ink);white-space:pre-wrap;word-break:break-word}.q-meta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}.options{display:flex;flex-direction:column;gap:10px;margin-top:16px}.option{display:flex;gap:12px;align-items:flex-start;width:100%;text-align:left;padding:14px 16px;border-radius:var(--radius-sm);background:var(--card);border:1.5px solid var(--line);transition:border-color .12s,background .12s,transform .08s;line-height:1.55}.option:active{transform:scale(.995)}.option .letter{flex:0 0 26px;height:26px;border-radius:50%;display:grid;place-items:center;font-weight:700;font-size:14px;background:var(--paper-2);color:var(--ink-2);margin-top:1px}.option.selected{border-color:var(--brand);background:var(--brand-soft)}.option.selected .letter{background:var(--brand);color:#fff}.option.correct{border-color:var(--ok);background:var(--ok-soft)}.option.correct .letter{background:var(--ok);color:#fff}.option.wrong{border-color:var(--bad);background:var(--bad-soft)}.option.wrong .letter{background:var(--bad);color:#fff}.option.disabled{cursor:default}.tabbar{position:fixed;left:0;right:0;bottom:0;z-index:30;background:color-mix(in srgb,var(--card) 92%,transparent);-webkit-backdrop-filter:saturate(180%) blur(12px);backdrop-filter:saturate(180%) blur(12px);border-top:1px solid var(--line);padding-bottom:var(--safe-b)}.tabbar-inner{max-width:var(--maxw);margin:0 auto;display:flex;height:var(--tabbar-h)}.tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;color:var(--ink-3);font-size:11px;font-weight:600;transition:color .12s}.tabbar a.router-link-active{color:var(--brand)}.tabbar .ic{font-size:20px;line-height:1}.bar{height:8px;background:var(--paper-2);border-radius:99px;overflow:hidden}.bar>i{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand-2));border-radius:99px;transition:width .4s}.ring{--p: 0;width:84px;height:84px;border-radius:50%;display:grid;place-items:center;background:conic-gradient(var(--brand) calc(var(--p)*1%),var(--paper-2) 0)}.ring:before{content:"";position:absolute;width:66px;height:66px;border-radius:50%;background:var(--card)}.ring span{position:relative;font-weight:700;font-size:18px}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:12px}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.stat{text-align:center}.stat .num{font-size:24px;font-weight:800;font-family:var(--mono);letter-spacing:-.02em}.stat .lbl{font-size:12px;color:var(--ink-3);margin-top:2px}.divider{height:1px;background:var(--line);margin:14px 0}.empty{text-align:center;color:var(--ink-3);padding:40px 20px}.empty .big{font-size:40px;margin-bottom:8px}.skel{background:linear-gradient(90deg,var(--paper-2),var(--paper),var(--paper-2));background-size:200% 100%;animation:sk 1.2s infinite;border-radius:var(--radius-sm)}@keyframes sk{to{background-position:-200% 0}}.fade-enter-active,.fade-leave-active{transition:opacity .18s}.fade-enter-from,.fade-leave-to{opacity:0}.countdown{font-family:var(--mono);font-weight:800;letter-spacing:-.02em}.countdown .unit{font-size:12px;font-weight:600;color:var(--ink-3);margin-left:1px}