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9px;font-size:11px;font-weight:700}.pq-tag.review{color:#9c6f11;background:#faf2e1;margin-bottom:6px;display:inline-block}.pq-tag.past{color:var(--muted);background:#efeff3;margin:0 6px 6px 0;display:inline-block}.pq-answer .choices{max-width:520px}.pq-bar{background:var(--card);border:1px solid var(--line);border-radius:14px;justify-content:space-between;align-items:center;gap:16px;margin-top:6px;padding:14px 16px;display:flex}.pq-bar>button:only-child{margin-left:auto}.pq-bar.ok{background:var(--ok-soft);border-color:#bfe0cf}.pq-bar.bad{background:var(--bad-soft);border-color:#efc7c3}.pq-verdict{flex-direction:column;gap:3px;line-height:1.45;display:flex}.pq-bar.ok .pq-verdict strong{color:var(--ok)}.pq-bar.bad .pq-verdict strong{color:var(--bad)}.learn-step{margin:0;font-size:16.5px;line-height:1.55}.learn-dots{gap:6px;display:flex}.learn-dots span{background:#dddbe6;border-radius:50%;width:8px;height:8px}.learn-dots span.past{background:var(--ok)}.learn-dots span.on{background:var(--accent)}.lesson-done{align-items:flex-start}.lesson-score{margin:0;font-size:17px}.app-page .path-node.optional{width:54px;height:54px;font-size:20px}.app-page .path-node.optional.open{color:var(--accent);border:2px solid var(--accent);background:#fff;box-shadow:0 4px #cfc6f5}.path-optional{color:var(--muted);letter-spacing:.06em;text-transform:uppercase;margin-top:2px;font-size:11px;font-style:normal;font-weight:600;display:block}.page.lesson.wide{max-width:1160px}.pq-wide .exercise.proof{box-shadow:none;background:0 0;border:0;padding:0}.pq-proof{flex-direction:column;gap:10px;display:flex}.pq-proof .givens{margin:0}.order{flex-direction:column;gap:14px;display:flex}.order-built{border:2px dashed var(--line);border-radius:12px;flex-direction:column;gap:6px;min-height:52px;margin:0;padding:10px;list-style:none;display:flex}.app-page .order-built li button{text-align:left;background:var(--accent-soft);white-space:normal;border:1px solid #d9d2f7;border-radius:10px;justify-content:flex-start;gap:10px;width:100%;padding:10px 12px;line-height:1.4}.app-page .order-built li.right button{background:var(--ok-soft);color:var(--ink);border-color:#bfe0cf}.app-page .order-built li.wrong button{background:var(--bad-soft);color:var(--ink);border-color:#efc7c3}.order-n{color:var(--accent);min-width:1.2em;font-weight:700}.order-empty{padding:6px 4px;font-size:14px}.order-bank{flex-direction:column;gap:6px;display:flex}.app-page .order-step{text-align:left;white-space:normal;background:var(--card);border:1px solid var(--line);border-radius:10px;justify-content:flex-start;padding:10px 12px;line-height:1.4}.app-page .order-step:hover:not(:disabled){border-color:var(--accent)}.app-page .order-step:disabled{color:#0000;opacity:1;background:#f1f0f5;border-style:dashed}.lesson-nav{gap:2px;display:inline-flex}.app-page .lesson-nav button{min-width:34px;min-height:34px;color:var(--accent);padding:0;font-size:22px;line-height:1}.app-page .lesson-nav button:disabled{color:#c9c7d4}.run-review{flex-direction:column;align-self:stretch;gap:4px;margin:0;padding:0;list-style:none;display:flex}.app-page .run-review button{text-align:left;background:var(--card);border:1px solid var(--line);white-space:normal;border-radius:10px;justify-content:flex-start;gap:10px;width:100%;padding:8px 10px;line-height:1.35}.run-review .mark{min-width:1.1em;font-weight:700}.run-review .mark.ok{color:var(--ok)}.run-review .mark.bad{color:var(--bad)}.run-review-prompt{font-size:14px}.path-practice{background:var(--card);border:1px solid var(--line);border-radius:14px;justify-content:space-between;align-items:center;gap:14px;margin:14px 0 0;padding:12px 16px;display:flex}.path-practice>div{flex-direction:column;gap:2px;display:flex}.path-practice .muted{font-size:13.5px}.endless-presets{flex-wrap:wrap;gap:8px;margin:12px 0 4px;display:flex}.app-page .endless-presets button{background:var(--card);border:1px solid var(--line);border-radius:20px;min-height:34px;padding:6px 14px}.endless-unit{margin:18px 0 0}.endless-unit-head{justify-content:space-between;align-items:baseline;gap:10px;display:flex}.endless-unit-head h2{margin:0 0 8px;font-size:16px}.endless-unit-head .path-unit-n{color:var(--muted);margin-right:6px}.endless-chips{flex-wrap:wrap;gap:7px;display:flex}.app-page .endless-chip,.endless-chip.locked{background:var(--card);border:1px solid var(--line);text-align:left;white-space:normal;border-radius:20px;align-items:center;gap:8px;min-height:36px;padding:7px 12px;font-size:14px;display:inline-flex}.app-page .endless-chip.on{background:var(--accent-soft);border-color:var(--accent);color:var(--accent)}.app-page .endless-chip.locked{color:#a3a1b3;-webkit-touch-callout:none;-webkit-user-select:none;user-select:none;cursor:default;background:#f4f4f7;border-style:dashed}.endless-due{text-transform:uppercase;letter-spacing:.05em;color:#9c6f11;font-size:11px;font-style:normal;font-weight:700}.strength{gap:2px;display:inline-flex}.strength i{background:#dddbe6;border-radius:2px;width:5px;height:11px}.strength i.on{background:var(--ok)}.endless-start{z-index:2;background:var(--card);border:1px solid var(--line);border-radius:14px;justify-content:space-between;align-items:center;gap:12px;margin:22px 0 0;padding:12px 16px;display:flex;position:sticky;bottom:0;box-shadow:0 -6px 18px #2538320f}.endless-tally{flex:1;font-size:15px;font-weight:600}.app-page .endless-stop{color:var(--accent)}.endless-summary{flex-direction:column;align-self:stretch;gap:6px;margin:0;padding:0;list-style:none;display:flex}.endless-summary 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