:root{--bg: #241a5c;--bg-deep: #150e38;--bg-lift: #322475;--ink: #ffffff;--ink-dim: #a99fd6;--line: #443592;--a: #e8442f;--a-edge: #a72b1b;--b: #2b6fe0;--b-edge: #17458f;--right: #2fbf6b;--right-edge: #1d8049;--wrong: #6f6a90;--wrong-edge: #4b476a;--alert: #ffc93c;--danger: #ff4d5e;--radius: 22px;--edge: 8px;color-scheme:dark;font-family:system-ui,-apple-system,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;color:var(--ink);background:var(--bg-deep);background-image:radial-gradient(120% 80% at 15% 0%,var(--bg-lift) 0%,transparent 55%),radial-gradient(100% 70% at 100% 100%,#3a1d6e 0%,transparent 60%),linear-gradient(160deg,var(--bg) 0%,var(--bg-deep) 100%);background-attachment:fixed;-webkit-font-smoothing:antialiased;-webkit-text-size-adjust:100%;touch-action:manipulation}button{font:inherit;color:inherit;-webkit-tap-highlight-color:transparent}.muted{color:var(--ink-dim)}.small{font-size:.85rem}.tile{--tile: 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infinite}.quiz__media-hint{margin:0 0 10px;font-size:.9rem;font-weight:800;color:#5b5486}.answer{display:flex;flex-direction:column;gap:10px;padding:12px;border-radius:14px;background:#ffffff0d}.answer__row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.answer__choices,.answer__durations{display:flex;gap:8px;flex-wrap:wrap}.answer__pick{padding:10px 16px;border:1px solid var(--line);border-radius:12px;background:transparent;color:var(--ink-dim);font-weight:800}.answer__pick:disabled{opacity:.4}.answer__pick.is-set{border-color:transparent;background:#ffffff24;color:var(--ink)}.answer__pick--a.is-set{background:var(--a);color:#fff}.answer__pick--b.is-set{background:var(--b);color:#fff}.editor__tab--a{border-color:var(--a);color:var(--a)}.editor__tab--b{border-color:var(--b);color:var(--b)}.editor__tab.is-active{background:#ffffff24}.editor__pair{display:grid;grid-template-columns:1fr 2fr;gap:10px}@media (max-width: 620px){.editor__pair{grid-template-columns:1fr}}