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.py{font-size:1.5rem;font-weight:600}.flash .gl{max-width:520px;font-size:1.15rem}.flash .prompt{letter-spacing:.06em;text-transform:uppercase;color:var(--ink-3);font-size:.82rem;font-weight:700}.flash .ex{background:var(--surface-2);text-align:left;border-radius:14px;max-width:560px;margin-top:8px;padding:12px 14px}.grade{grid-template-columns:repeat(4,1fr);gap:8px;display:grid}.grade button{border:0;border-radius:14px;flex-direction:column;justify-content:center;align-items:center;gap:2px;min-height:60px;padding:10px 4px;font-weight:700;display:flex}.grade button small{opacity:.75;font-size:.74rem;font-weight:600}.grade .g1{color:#b3261e;background:#fde2df}.grade .g2{color:#9a5b00;background:#fdf0d8}.grade .g3{color:#1f6b3d;background:#dff1e5}.grade .g4{color:#1b5aa6;background:#dcebfb}:root[data-theme=dark] .grade .g1{color:#ff9a90;background:#3d1f1d}:root[data-theme=dark] .grade .g2{color:#f2b95c;background:#3a2c14}:root[data-theme=dark] .grade .g3{color:#7fd3a0;background:#1f3327}:root[data-theme=dark] .grade .g4{color:#8cbcf5;background:#1a2b40}@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .grade .g1{color:#ff9a90;background:#3d1f1d}:root:not([data-theme=light]) .grade .g2{color:#f2b95c;background:#3a2c14}:root:not([data-theme=light]) .grade .g3{color:#7fd3a0;background:#1f3327}:root:not([data-theme=light]) .grade .g4{color:#8cbcf5;background:#1a2b40}}.play-circle{background:var(--accent-soft);width:96px;height:96px;color:var(--accent);border:0;border-radius:50%;justify-content:center;align-items:center;display:flex}.play-circle svg{width:44px;height:44px}.session-bar{color:var(--ink-3);align-items:center;gap:10px;font-size:.82rem;display:flex}.session-bar .n{font-weight:700}.session-bar .n.l{color:var(--accent)}.session-bar .n.r{color:var(--good)}.session-bar .n.nw{color:var(--t4)}.entry-row{color:inherit;align-items:baseline;gap:12px;padding:12px 4px;display:flex}.entry-row .hz{font-family:var(--zh-font);white-space:nowrap;font-size:1.45rem}.entry-row .py{font-size:.95rem;font-weight:600}.entry-row .df{color:var(--ink-2);text-overflow:ellipsis;-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:.9rem;display:-webkit-box;overflow:hidden}.entry-big{font-family:var(--zh-font);font-size:4rem;line-height:1.1}.serif .entry-big{font-family:var(--zh-serif)}.def-list{margin:8px 0 0;padding-left:22px}.def-list li{margin:4px 0}.stroke-box{background:var(--surface-2);border-radius:16px;width:180px;height:180px;position:relative}.stroke-box svg.grid-bg,.stroke-box .hw{position:absolute;inset:0}.tone-grid{grid-template-columns:repeat(5,1fr);gap:8px;display:grid}.tone-grid button{border:1px solid var(--line);background:var(--surface);border-radius:12px;min-height:54px;font-size:1.2rem;font-weight:700}.tone-grid button.picked{background:var(--ink);color:var(--bg)}.tone-grid button.right{background:var(--good);color:#fff;border-color:var(--good)}.tone-grid button.wrong{color:#fff;background:#d64545;border-color:#d64545}.opt{text-align:left;border:1px solid var(--line);background:var(--surface);border-radius:14px;width:100%;padding:14px 16px;font-weight:500}.opt:hover{background:var(--surface-2)}.opt.right{background:var(--good-soft);border-color:var(--good)}.opt.wrong{background:#fbe1df;border-color:#d64545}:root[data-theme=dark] .opt.wrong{background:#3d1f1d}.word-bank{flex-wrap:wrap;gap:8px;min-height:58px;display:flex}.word-tile{border:1px solid var(--line);background:var(--surface);box-shadow:0 2px 0 var(--line);font-family:var(--zh-font);border-radius:12px;flex-direction:column;align-items:center;padding:8px 12px;font-size:1.35rem;line-height:1.2;display:flex}.word-tile small{font-family:var(--ui-font);color:var(--ink-3);font-size:.72rem}.word-tile.used{opacity:.25;pointer-events:none}.answer-line{border-bottom:2px solid var(--line);flex-wrap:wrap;gap:8px;min-height:64px;padding:6px 0;display:flex}.feedback{border-radius:14px;padding:12px 14px;font-weight:600}.feedback.ok{background:var(--good-soft);color:var(--good)}.feedback.bad{color:#b3261e;background:#fbe1df}:root[data-theme=dark] .feedback.bad{color:#ff8a80;background:#3d1f1d}.empty{text-align:center;color:var(--ink-3);padding:40px 16px}.empty .zh{color:var(--surface-3);margin-bottom:8px;font-size:3rem;display:block}.kbd{border:1px solid var(--line);color:var(--ink-3);border-bottom-width:2px;border-radius:5px;padding:0 5px;font:600 .72rem ui-monospace,monospace}@media (hover:none){.kbd{display:none}}.ring{display:inline-flex;position:relative}.ring .ring-label{justify-content:center;align-items:center;font-size:.9rem;font-weight:800;display:flex;position:absolute;inset:0}.bars{align-items:flex-end;gap:4px;height:80px;display:flex}.bars span{background:var(--accent);opacity:.85;border-radius:4px 4px 0 0;flex:1;min-height:2px}.spinner{border:3px solid var(--surface-3);border-top-color:var(--accent);border-radius:50%;width:22px;height:22px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.toast{left:50%;bottom:calc(var(--tabbar-h) + var(--safe-b) + 90px);z-index:90;background:var(--ink);color:var(--bg);box-shadow:var(--shadow-lg);border-radius:12px;max-width:calc(100vw - 32px);padding:10px 16px;font-size:.9rem;font-weight:600;animation:.15s fade;position:fixed;transform:translate(-50%)}.gram{border-left:3px solid var(--accent);margin:10px 0;padding:4px 0 4px 12px}.gram .pat{font-family:var(--zh-font);font-weight:700}.prose h3{margin-top:18px}.prose p,.prose li{color:var(--ink-2)}.prose li{margin:6px 0}.method-cite{color:var(--ink-3);font-size:.78rem}details.fold summary{cursor:pointer;padding:6px 0;font-weight:600;list-style:none}details.fold summary::-webkit-details-marker{display:none}