.lsn-page{max-width:1120px;margin:0 auto;padding:30px 24px 70px}.lsn-back{font-family:var(--mono);color:var(--altitude);border:1px solid var(--line-strong);border-radius:var(--radius-sm);margin-bottom:24px;padding:6px 12px;font-size:13px;text-decoration:none;display:inline-block}.lsn-header{max-width:680px;margin-bottom:28px}.lsn-eyebrow{font-family:var(--mono);letter-spacing:.24em;text-transform:uppercase;color:var(--accent);margin:0;font-size:12px}.lsn-title{letter-spacing:-.02em;margin:12px 0;font-size:clamp(30px,4.6vw,44px);font-weight:800;line-height:1.08}.lsn-title .accent{color:var(--altitude)}.lsn-lede{color:var(--text-dim);margin:0;font-size:15.5px;line-height:1.6}.lsn-grid{grid-template-columns:190px minmax(0,1fr);align-items:start;gap:34px;display:grid}.lsn-tracker{top:calc(var(--site-header-h) + 28px);align-self:start;position:sticky}.lsn-tracker-track{font-family:var(--mono);letter-spacing:.18em;text-transform:uppercase;color:var(--text-faint);margin:0;font-size:10px}.lsn-tracker-chapter{font-family:var(--mono);color:var(--accent);margin:6px 0 2px;font-size:12px}.lsn-tracker-bar{background:var(--line);border-radius:2px;height:3px;margin:10px 0 16px}.lsn-tracker-fill{background:var(--accent);border-radius:2px;height:100%}.lsn-tracker-list{flex-direction:column;gap:2px;display:flex}.lsn-tracker-item{background:0 0;border-radius:6px;align-items:center;gap:9px;padding:6px 8px;text-decoration:none;display:flex}.lsn-tracker-item--active{background:#7ecbff12}.lsn-tracker-dot{border:1.6px solid var(--line-strong);background:0 0;border-radius:50%;flex:none;width:9px;height:9px;margin:2px}.lsn-tracker-dot--active{border-color:var(--accent);background:var(--accent)}.lsn-tracker-label{color:var(--text-dim);font-size:12.5px}.lsn-tracker-item--active .lsn-tracker-label{color:var(--text);font-weight:600}.lsn-body{min-width:0}.lsn-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);margin-bottom:18px;padding:22px 26px 20px}.lsn-card-eyebrow{font-family:var(--mono);letter-spacing:.18em;align-items:center;gap:10px;margin:0 0 6px;font-size:10.5px;display:flex}.lsn-card-num{border:2px solid var(--accent);background:var(--navy-900);width:22px;height:22px;font-family:var(--mono);color:var(--accent);letter-spacing:0;border-radius:50%;flex:none;justify-content:center;align-items:center;font-size:10px;display:inline-flex}.lsn-card-label{color:var(--accent)}.lsn-card-title{margin:0 0 10px;font-size:21px}.lsn-card-prose{color:var(--text-dim);max-width:64ch;margin:0;font-size:15px;line-height:1.7}.lsn-card-prose strong,.lsn-card-prose em{color:var(--text)}.lsn-art-frame{border:1px solid var(--line);border-radius:var(--radius-sm);background:#060d1a73;margin:16px 0 0;padding:16px 18px 10px}.lsn-art-frame svg{width:100%;height:auto;display:block}.lsn-demo-panel{border:1px dashed var(--line-strong);border-radius:var(--radius-sm);align-items:center;gap:14px;margin-top:14px;padding:11px 16px;text-decoration:none;transition:border-color .15s,background .15s;display:flex}.lsn-demo-panel:hover{border-color:var(--lift);background:#3ddc840d}.lsn-demo-glyph{flex:none}.lsn-demo-crank{transform-box:view-box;transform-origin:20px 32px;animation:2.6s linear infinite hew-crank}.lsn-demo-piston{animation:2.6s ease-in-out infinite hew-piston}.lsn-demo-badge{font-family:var(--mono);letter-spacing:.16em;color:var(--lift);border:1px solid color-mix(in srgb, var(--lift) 50%, transparent);white-space:nowrap;border-radius:999px;align-items:center;gap:7px;padding:3px 9px;font-size:9.5px;display:inline-flex}.lsn-demo-dot{background:var(--lift);border-radius:50%;width:6px;height:6px;animation:2s ease-out infinite hew-pulse}.lsn-demo-text{flex:1;min-width:0}.lsn-demo-name{color:var(--text);font-size:14px;font-weight:650;display:block}.lsn-demo-line{color:var(--text-dim);margin-top:1px;font-size:12.5px;display:block}.lsn-demo-open{font-family:var(--mono);color:var(--altitude);white-space:nowrap;font-size:12px}@keyframes hew-crank{to{transform:rotate(360deg)}}@keyframes hew-piston{0%,to{transform:translateY(0)}50%{transform:translateY(7px)}}@keyframes hew-pulse{0%{box-shadow:0 0 #3ddc8473}70%{box-shadow:0 0 0 6px #3ddc8400}to{box-shadow:0 0 #3ddc8400}}.lsn-takeaway{border-top:1px dashed var(--line);align-items:flex-start;gap:10px;margin-top:16px;padding-top:12px;display:flex}.lsn-takeaway svg{flex:none;margin-top:2px}.lsn-takeaway p{color:var(--text);margin:0;font-size:13.5px;line-height:1.55}.lsn-takeaway-tag{font-family:var(--mono);letter-spacing:.14em;color:var(--lift);margin-right:8px;font-size:10px}.lsn-factoid{margin-top:14px}.lsn-factoid-pill{border:1px solid var(--line);cursor:pointer;font-family:var(--mono);letter-spacing:.14em;color:#ffd166;background:0 0;border-radius:999px;align-items:center;gap:8px;padding:5px 12px;font-size:10.5px;display:inline-flex;position:relative}.lsn-factoid-pill:before{content:"";position:absolute;inset:-10px}.lsn-factoid-pill span{font-size:12px;line-height:1}.lsn-factoid-text{max-width:58ch;color:var(--text-dim);border-left:2px solid #ffd166;margin:10px 0 0;padding-left:10px;font-size:12.5px;line-height:1.6}.lsn-strip{border:1px solid var(--line-strong);border-radius:var(--radius);background:linear-gradient(120deg,#8fd3ff12,#3ddc840d);align-items:baseline;gap:14px;margin:0 0 18px;padding:14px 20px;display:flex}.lsn-strip-tag{font-family:var(--mono);letter-spacing:.16em;color:var(--altitude);white-space:nowrap;font-size:10px}.lsn-strip p{color:var(--text-dim);margin:0;font-size:13.5px;line-height:1.6}.lsn-remember{border:1px solid color-mix(in srgb, var(--lift) 40%, transparent);border-radius:var(--radius);background:#3ddc840d;margin-bottom:18px;padding:22px 26px}.lsn-remember-eyebrow{font-family:var(--mono);letter-spacing:.18em;color:var(--lift);margin:0 0 4px;font-size:10.5px}.lsn-remember-title{margin:0 0 14px;font-size:21px}.lsn-remember ol{flex-direction:column;gap:9px;margin:0;padding:0;list-style:none;display:flex}.lsn-remember li{align-items:baseline;gap:12px;display:flex}.lsn-remember-num{font-family:var(--mono);color:var(--lift);flex:none;font-size:11px}.lsn-remember-text{color:var(--text);font-size:14px;line-height:1.55}.lsn-quiz-pill{font-family:var(--mono);color:#081221;background:#7ecbff;border-radius:999px;margin-top:16px;padding:8px 16px;font-size:12.5px;font-weight:600;text-decoration:none;display:inline-block}.lsn-quiz-pill span{opacity:.75;font-weight:400}.lsn-next{border:1px solid var(--line-strong);border-radius:var(--radius);background:linear-gradient(120deg,#8fd3ff12,#3ddc840d);align-items:center;gap:14px;padding:16px 20px;text-decoration:none;display:flex}.lsn-next-tag{font-family:var(--mono);letter-spacing:.16em;color:var(--text-faint);white-space:nowrap;font-size:11px}.lsn-next-body{flex:1;min-width:0}.lsn-next-title{color:var(--text);font-size:15.5px;font-weight:650;display:block}.lsn-next-line{color:var(--text-dim);margin-top:2px;font-size:12.5px;display:block}.lsn-next-arrow{font-family:var(--mono);color:var(--accent)}@media (max-width:860px){.lsn-grid{grid-template-columns:1fr;gap:22px}.lsn-tracker{position:static}.lsn-tracker-list{flex-flow:wrap;gap:4px}}@media (max-width:640px){.lsn-card{padding:18px 18px 16px}.lsn-demo-panel{flex-wrap:wrap}}