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.v{font-family:var(--f-display);font-size:1.85rem;font-weight:700;font-variant-numeric:tabular-nums;line-height:1.1;margin-top:4px}.stat .v small{font-size:1rem;color:var(--muted);font-weight:500}.stat .s{color:var(--muted);font-size:.84rem}label.label{display:block}.label{font-family:var(--f-ui);font-size:.72rem;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);margin:0 0 8px;font-weight:700}.chips{display:flex;flex-wrap:wrap;gap:6px}.pick{border:1px solid var(--line);background:var(--surface);border-radius:999px;padding:7px 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summary:after{content:"+";margin-inline-start:auto;color:var(--muted);font-weight:400;font-size:1.2rem}.howto[open] summary:after,.ch-intro[open] summary:after{content:"\2212"}.howto[open] summary,.ch-intro[open] summary{margin-bottom:12px}.lib{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(320px,100%),1fr));gap:14px}.lib-item{display:flex;gap:14px;align-items:center;padding:12px;border-radius:16px;background:var(--surface);border:1px solid var(--line);text-decoration:none;color:var(--ink)}.lib-item:hover{border-color:var(--muted)}.lib-art{width:84px;height:84px;border-radius:12px;overflow:hidden;flex:none}.lib-b{display:flex;flex-direction:column;gap:3px;min-width:0;flex:1}.lib-b .label{margin:0}.lib-t{font-weight:600;line-height:1.25}.lib-m{color:var(--muted);font-size:.74rem;display:flex;align-items:center;gap:4px}.lib-m .ic,.ch-meta .ic{width:14px;height:14px}.ch-hero{display:grid;grid-template-columns:minmax(180px,280px) 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var(--line)}.track{display:flex;align-items:center;gap:8px;border-bottom:1px solid var(--line)}.track-play{width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:var(--surface);display:flex;align-items:center;justify-content:center;flex:none;color:var(--ink)}.track-play .ic{width:16px;height:16px}.track.now .track-play{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}.track-b{flex:1;min-width:0;display:grid;grid-template-columns:auto minmax(0,1fr);column-gap:10px;row-gap:2px;align-items:baseline;text-align:start;border:0;background:none;padding:14px 4px;color:var(--ink)}.track-n{color:var(--muted);font-size:.8rem;grid-row:span 2}.track-t{font-weight:500;line-height:1.3}.track-m{color:var(--muted);font-size:.72rem}.track.done .track-t{color:var(--muted)}.track-s{width:24px;color:var(--good);flex:none;display:flex;justify-content:center}.track-s 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.L{font-family:var(--f-mono);font-weight:500;min-width:28px;height:28px;border-radius:8px;display:inline-flex;align-items:center;justify-content:center;background:var(--sunk);flex:none}.opt[aria-pressed=true]{border-color:var(--accent);background:var(--accent-soft)}.opt[aria-pressed=true] .L{background:var(--accent);color:var(--accent-ink)}.opt.right{border-color:var(--good);background:var(--good-soft)}.opt.right .L{background:var(--good);color:var(--surface)}.opt.wrong{border-color:var(--bad);background:var(--bad-soft)}.opt.wrong .L{background:var(--bad);color:var(--surface)}.opt[disabled]{cursor:default}.feedback{margin-top:18px;border-radius:14px;padding:16px 18px;background:var(--sunk);font-family:var(--f-read);font-size:1.02rem;line-height:1.6}.feedback .verdict{font-family:var(--f-ui);font-weight:600;margin-bottom:6px}.feedback.ok .verdict{color:var(--good)}.feedback.no .verdict{color:var(--bad)}.feedback p{margin:0 0 .6em}.refs{font-family:var(--f-ui);font-size:.88rem;margin:8px 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