.kp-hero .sub{max-width:640px}.kp-sec{padding-top:8px}.kp-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:28px;align-items:start}.kp-note{margin:12px 2px 0;font-size:14px;color:var(--text-muted);line-height:1.5}.kp-chapters{border:1px solid var(--border);border-radius:var(--r-lg);padding:16px 10px 10px;background:var(--bg-card,transparent)}.kp-chapters h2{font-size:17px;margin:0 8px 10px}.kp-chapters ol{list-style:none;margin:0;padding:0;max-height:62vh;overflow-y:auto}.kp-ch{display:flex;gap:12px;width:100%;padding:8px;border:0;border-radius:8px;background:none;cursor:pointer;text-align:left;font:inherit;color:inherit;line-height:1.35}.kp-ch:hover{background:var(--bg-alt,rgba(0,0,0,.04))}.kp-ch:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.kp-ch.on{background:var(--accent-soft,rgba(240,136,62,.12))}.kp-ch.on .kp-nm{font-weight:600}.kp-tc{flex:0 0 auto;min-width:38px;font-family:var(--font-mono);font-size:13px;color:var(--accent);padding-top:1px}.kp-nm{font-size:14.5px}@media (max-width:900px){.kp-grid{grid-template-columns:1fr}.kp-chapters ol{max-height:none}}