/* M09K05 · Emission and absorption */
.ea-hero,.ea-foundation,.ea-lab-section,.ea-boundary{padding-block:clamp(4rem,8vw,7rem)}
.ea-hero{scroll-margin-top:calc(var(--header-h) + 24px);display:grid;grid-template-columns:minmax(0,1.18fr) minmax(320px,.82fr);gap:clamp(2rem,5vw,5rem);align-items:center}
.ea-hero-copy{min-width:0}.ea-hero :is(h1,h2){font-size:clamp(3rem,7vw,6.15rem);line-height:.94;letter-spacing:-.055em;max-width:13ch;margin:.55rem 0 1.15rem}.ea-hero :is(h1,h2) em{font-style:normal;color:var(--accent-2)}.ea-hero p{max-width:76ch;color:var(--muted);font-size:clamp(1rem,1.5vw,1.16rem);line-height:1.7}.ea-hero-actions{display:flex;flex-wrap:wrap;gap:.8rem;margin-top:1.6rem}
.ea-hero-card{border:1px solid var(--line);border-radius:1.35rem;padding:clamp(1.25rem,3vw,2rem);background:linear-gradient(160deg,color-mix(in srgb,var(--panel) 90%,var(--accent-2) 10%),var(--panel));box-shadow:var(--shadow);min-width:0}.ea-hero-card>span,.ea-card>span,.ea-boundary-grid article>span,.ea-control-head span,.ea-metric span,.ea-reading>span{display:block;color:var(--muted);font-size:.78rem;letter-spacing:.08em;text-transform:uppercase}.ea-equation{font-family:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;font-size:clamp(.92rem,1.75vw,1.2rem);margin:.72rem 0;overflow-wrap:anywhere}.ea-equation.large{font-size:clamp(1.05rem,2.25vw,1.55rem);color:var(--accent-2)}.ea-soft{color:var(--muted);font-size:.78em}.ea-mini-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.7rem;margin-top:1.2rem}.ea-mini-grid div{border:1px solid var(--line);border-radius:.8rem;padding:.78rem;min-width:0}.ea-mini-grid span{display:block;color:var(--muted);font-size:.72rem}.ea-mini-grid strong{display:block;margin-top:.2rem;font-size:.88rem;overflow-wrap:anywhere}
.ea-foundation-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;margin-top:2rem}.ea-card{border:1px solid var(--line);border-radius:1rem;padding:1.25rem;background:var(--panel);min-width:0}.ea-card.primary{background:linear-gradient(145deg,color-mix(in srgb,var(--panel) 86%,var(--accent-2) 14%),var(--panel))}.ea-card h3{margin:.45rem 0 .55rem;font-size:1.12rem}.ea-card p,.ea-note p,.ea-boundary-grid p{color:var(--muted);line-height:1.62;margin:0}.ea-note{margin-top:1rem;border-left:3px solid var(--accent-2);padding:1rem 1.15rem;background:color-mix(in srgb,var(--panel) 80%,transparent);border-radius:0 .8rem .8rem 0}.ea-note strong{display:block;margin-bottom:.35rem}
.ea-lab-shell{display:grid;grid-template-columns:minmax(290px,.8fr) minmax(0,2.2fr);gap:1rem;align-items:start;margin-top:2rem}.ea-controls{position:sticky;top:92px;display:grid;gap:.82rem;padding:1rem;border:1px solid var(--line);border-radius:1rem;background:var(--panel);min-width:0}.ea-control-head{display:flex;justify-content:space-between;align-items:flex-start;gap:.8rem}.ea-control-head strong{display:block}.ea-status{padding:.28rem .55rem;border:1px solid var(--line);border-radius:999px;text-align:right;max-width:12rem}.ea-controls label{display:grid;grid-template-columns:1fr auto;gap:.35rem .6rem;align-items:center;min-width:0}.ea-controls label>span{font-size:.82rem}.ea-controls output{font:600 .78rem/1.2 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;color:var(--accent-2);max-width:10.5rem;text-align:right;overflow-wrap:anywhere}.ea-controls input{grid-column:1/-1;width:100%;min-width:0}.ea-presets{margin:0;padding:.72rem;border:1px solid var(--line);border-radius:.8rem;min-width:0}.ea-presets legend{padding:0 .3rem;color:var(--muted);font-size:.76rem}.ea-presets div{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.45rem}.ea-presets button{min-width:0;padding:.58rem .48rem;border:1px solid var(--line);border-radius:.62rem;background:var(--panel-solid);color:var(--text);cursor:pointer}.ea-presets button.is-active{border-color:var(--accent-2);box-shadow:inset 0 0 0 1px var(--accent-2)}.ea-assumption{padding:.78rem;border-radius:.72rem;background:var(--panel-solid)}.ea-assumption p{margin:.28rem 0 0;color:var(--muted);font-size:.8rem;line-height:1.5}
.ea-stage{min-width:0;display:grid;gap:1rem}.ea-metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.65rem}.ea-metric,.ea-check-grid>div{border:1px solid var(--line);border-radius:.72rem;background:var(--panel);padding:.75rem;min-width:0}.ea-metric strong,.ea-check-grid strong{display:block;margin-top:.22rem;font-size:.84rem;overflow-wrap:anywhere}.ea-top-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}.ea-panel,.ea-reading,.ea-boundary-grid article{border:1px solid var(--line);border-radius:1rem;background:var(--panel);padding:1rem;min-width:0}.ea-panel h3{margin:0 0 .65rem;font-size:1rem}.ea-panel svg{display:block;width:100%;height:auto;overflow:visible}.ea-check-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:.65rem}.ea-reading>strong{display:block;margin:.35rem 0 .5rem}.ea-reading p{margin:0;color:var(--muted);line-height:1.62}.ea-boundary-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;margin-top:2rem}.ea-boundary-grid strong{display:block;margin:.35rem 0 .45rem}.ea-upcoming{margin-top:clamp(3rem,7vw,6rem)}
.ea-svg-axis{stroke:var(--muted);stroke-width:1.5}.ea-svg-grid{stroke:var(--line);stroke-width:1}.ea-svg-in{stroke:var(--text);stroke-width:9;stroke-linecap:round}.ea-svg-abs{stroke:var(--warm);fill:var(--warm)}.ea-svg-ref{stroke:var(--accent-2);fill:var(--accent-2)}.ea-svg-trans{stroke:var(--accent);fill:var(--accent)}.ea-svg-bb{fill:var(--muted)}.ea-svg-real{fill:var(--warm)}.ea-svg-bath{fill:var(--accent)}.ea-svg-surface{fill:var(--panel-solid);stroke:var(--line);stroke-width:2}.ea-svg-label{fill:var(--text);font-size:15px;font-weight:700}.ea-svg-small{fill:var(--muted);font-size:12px}.ea-svg-value{fill:var(--text);font-size:13px;font-weight:700}.ea-svg-note{fill:var(--muted);font-size:12px}
@media(max-width:1080px){.ea-metrics{grid-template-columns:repeat(2,minmax(0,1fr))}.ea-check-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:980px){.ea-hero,.ea-lab-shell{grid-template-columns:1fr}.ea-controls{position:static}.ea-foundation-grid,.ea-boundary-grid,.ea-top-grid{grid-template-columns:1fr}}
@media(max-width:640px){.ea-hero{padding-top:2.5rem}.ea-hero :is(h1,h2){font-size:clamp(2.3rem,12vw,3.8rem)}.ea-mini-grid,.ea-metrics,.ea-check-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.ea-panel{padding:.65rem}.ea-controls{padding:.85rem}.ea-equation{font-size:.82rem}.ea-equation.large{font-size:.9rem}.ea-partition-svg,.ea-kirchhoff-svg{aspect-ratio:1.4}}
@media(max-width:380px){.ea-mini-grid,.ea-metrics,.ea-check-grid,.ea-presets div{grid-template-columns:1fr}.ea-controls output{max-width:8rem}.ea-hero :is(h1,h2),.ea-foundation .section-heading h2,.ea-boundary .section-heading h2{overflow-wrap:anywhere}}
.ea-controls,.ea-control-head,.ea-stage,.ea-panel,.ea-metrics,.ea-top-grid,.ea-foundation-grid,.ea-boundary-grid{min-width:0;max-width:100%}.ea-foundation .section-heading h2,.ea-boundary .section-heading h2{min-width:0;overflow-wrap:anywhere;word-break:break-word}
/* C126 adversarial localization hardening: long German check labels must shrink/wrap. */
.ea-check-grid > div,.ea-check-grid span{min-width:0;overflow-wrap:anywhere;word-break:break-word}