.ad-page{background:var(--color-bg,#0a0a0f);min-height:100vh;color:var(--color-text,#ffffff)}.ad-toolbar{position:sticky;top:0;z-index:50;justify-content:space-between;padding:0 24px;height:52px;background:rgba(10,10,15,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.06)}.ad-toolbar,.ad-toolbar__back{display:flex;align-items:center}.ad-toolbar__back{gap:6px;font-family:var(--font-inter,"Inter",sans-serif);font-size:.8rem;font-weight:500;color:var(--color-text-muted,rgba(255,255,255,.7));text-decoration:none;transition:color .15s ease;letter-spacing:.01em}.ad-toolbar__back:hover{color:var(--color-text,#ffffff)}.ad-toolbar__right{display:flex;align-items:center;gap:10px}.ad-toolbar__badge{font-family:var(--font-inter,"Inter",sans-serif);font-size:.65rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:3px 10px;border-radius:100px;background:rgba(16,185,129,.12);color:var(--badge-color,#10B981);border:1px solid rgba(16,185,129,.2)}.ad-toolbar__badge--sub{background:rgba(255,255,255,.04);color:var(--color-text-subtle,rgba(255,255,255,.5));border:1px solid rgba(255,255,255,.08);--badge-color:rgba(255,255,255,0.5)}.ad-toolbar__immersive{display:flex;align-items:center;gap:6px;padding:6px 14px;border-radius:6px;border:1px solid rgba(0,168,150,.25);background:rgba(0,168,150,.08);color:#00D4AA;font-family:var(--font-inter,"Inter",sans-serif);font-size:.75rem;font-weight:500;letter-spacing:.02em;cursor:pointer;transition:all .2s ease}.ad-toolbar__immersive:hover{background:rgba(0,168,150,.15);border-color:rgba(0,168,150,.4);color:#2EECC8}.ad-hero{padding:80px 24px 48px;text-align:center;position:relative;overflow:hidden}.ad-hero:before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:600px;height:400px;background:radial-gradient(ellipse,rgba(0,168,150,.06) 0,transparent 70%);pointer-events:none}.ad-hero__inner{max-width:680px;margin:0 auto;position:relative}.ad-hero__provenance{display:flex;align-items:center;gap:16px;margin-bottom:28px;justify-content:center}.ad-hero__provenance-line{flex:1;max-width:64px;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.18),transparent)}.ad-hero__provenance-text{display:flex;align-items:center;gap:8px}.ad-hero__provenance-type{font-family:JetBrains Mono,Fira Code,monospace;font-size:.7rem;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:rgba(255,255,255,.7)}.ad-hero__provenance-sep{color:rgba(255,255,255,.2);font-size:.75rem;line-height:1}.ad-hero__provenance-template{font-family:var(--font-inter,"Inter",sans-serif);font-size:.7rem;font-weight:400;letter-spacing:.08em;text-transform:uppercase;color:rgba(255,255,255,.4)}.ad-hero__title{font-family:var(--font-literata,"Literata",Georgia,serif);font-size:clamp(2rem,4.5vw,3rem);font-weight:700;line-height:1.15;letter-spacing:-.02em;color:var(--color-text,#ffffff);margin:0 0 12px}.ad-hero__subtitle{font-family:var(--font-inter,"Inter",sans-serif);font-size:clamp(.95rem,1.8vw,1.1rem);font-weight:400;line-height:1.5;color:var(--color-text-muted,rgba(255,255,255,.7));margin:0 0 28px}.ad-hero__meta{display:flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap;margin-bottom:32px}.ad-hero__meta-item{display:flex;align-items:baseline;gap:4px}.ad-hero__meta-value{font-family:JetBrains Mono,Fira Code,monospace;font-size:.85rem;font-weight:600;color:var(--color-text,#ffffff)}.ad-hero__meta-label{font-family:var(--font-inter,"Inter",sans-serif);font-size:.75rem;color:var(--color-text-subtle,rgba(255,255,255,.5))}.ad-hero__meta-dot{width:3px;height:3px;border-radius:50%;background:var(--color-text-faint,rgba(255,255,255,.3));flex-shrink:0}.ad-hero__actions{display:flex;align-items:center;justify-content:center;gap:12px}.ad-hero__cta{display:inline-flex;align-items:center;gap:6px;padding:10px 24px;border-radius:8px;font-family:var(--font-inter,"Inter",sans-serif);font-size:.85rem;font-weight:500;letter-spacing:.01em;cursor:pointer;transition:all .2s ease;text-decoration:none;border:none}.ad-hero__cta--primary{background:#00A896;color:#ffffff}.ad-hero__cta--primary:hover{background:#009485;box-shadow:0 4px 16px rgba(0,168,150,.3)}.ad-hero__cta--secondary{background:rgba(255,255,255,.04);color:var(--color-text-muted,rgba(255,255,255,.7));border:1px solid rgba(255,255,255,.1)}.ad-hero__cta--secondary:hover{background:rgba(255,255,255,.08);color:var(--color-text,#ffffff);border-color:rgba(255,255,255,.18)}.ad-spec{padding:0 24px;max-width:960px;margin:0 auto 48px}.ad-spec__inner{border:1px solid rgba(255,255,255,.06);border-radius:12px;background:rgba(255,255,255,.02);overflow:hidden}.ad-spec__toggle{display:flex;align-items:center;justify-content:space-between;width:100%;padding:14px 20px;border:none;background:transparent;cursor:pointer;color:var(--color-text-muted,rgba(255,255,255,.7));transition:color .15s ease}.ad-spec__toggle:hover{color:var(--color-text,#ffffff)}.ad-spec__toggle-label{font-family:var(--font-inter,"Inter",sans-serif);font-size:.7rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase}.ad-spec__toggle-icon{transition:transform .25s ease}.ad-spec__toggle-icon--open{transform:rotate(180deg)}.ad-spec__content{max-height:0;overflow:hidden;transition:max-height .4s ease,padding .3s ease;padding:0 20px}.ad-spec__content--open{max-height:800px;padding:0 20px 24px}.ad-spec__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:20px}.ad-spec__card{padding:14px 16px;background:rgba(255,255,255,.03);border-radius:8px;border:1px solid rgba(255,255,255,.04)}.ad-spec__card-label{font-size:.6rem;letter-spacing:.08em;text-transform:uppercase;color:var(--color-text-faint,rgba(255,255,255,.3));margin-bottom:6px}.ad-spec__card-label,.ad-spec__card-value{font-family:var(--font-inter,"Inter",sans-serif);font-weight:500}.ad-spec__card-value{font-size:.85rem;color:var(--color-text,#ffffff)}.ad-spec__section{margin-bottom:16px}.ad-spec__section:last-child{margin-bottom:0}.ad-spec__section-label{font-family:var(--font-inter,"Inter",sans-serif);font-size:.6rem;font-weight:500;letter-spacing:.08em;text-transform:uppercase;color:var(--color-text-faint,rgba(255,255,255,.3));margin-bottom:10px}.ad-spec__palette{display:flex;flex-wrap:wrap;gap:8px}.ad-spec__palette-chip{display:flex;align-items:center;gap:8px;padding:6px 12px;background:rgba(255,255,255,.03);border-radius:6px;border:1px solid rgba(255,255,255,.04)}.ad-spec__palette-swatch{width:12px;height:12px;border-radius:3px;flex-shrink:0}.ad-spec__palette-name{font-family:var(--font-inter,"Inter",sans-serif);font-size:.75rem;color:var(--color-text-muted,rgba(255,255,255,.7))}.ad-spec__palette-hex{font-family:JetBrains Mono,monospace;font-size:.65rem;color:var(--color-text-faint,rgba(255,255,255,.3))}.ad-spec__viz-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:6px}.ad-spec__viz-item{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;background:rgba(255,255,255,.02);border-radius:6px;border:1px solid rgba(255,255,255,.03)}.ad-spec__viz-name{font-family:var(--font-inter,"Inter",sans-serif);font-size:.78rem;color:var(--color-text-muted,rgba(255,255,255,.7))}.ad-spec__viz-type{font-family:JetBrains Mono,monospace;font-size:.6rem;color:var(--color-text-faint,rgba(255,255,255,.3));letter-spacing:.02em}.ad-spec__sources{display:flex;flex-wrap:wrap;gap:6px}.ad-spec__source-tag{font-family:var(--font-inter,"Inter",sans-serif);font-size:.72rem;padding:4px 10px;background:rgba(0,168,150,.06);border:1px solid rgba(0,168,150,.12);border-radius:100px;color:#00D4AA}.ad-spec__source-tag--more{background:rgba(255,255,255,.03);border-color:rgba(255,255,255,.06);color:var(--color-text-subtle,rgba(255,255,255,.5))}.ad-content{max-width:1200px;margin:0 auto;padding:0 24px 64px}.ad-content__frame{border-radius:16px;overflow:hidden;border:1px solid rgba(255,255,255,.06);box-shadow:0 8px 40px rgba(0,0,0,.4),inset 0 0 0 1px rgba(255,255,255,.02);position:relative}.ad-content__frame .bh-essay{min-height:auto;border-radius:16px}.ad-footer{border-top:1px solid rgba(255,255,255,.06);padding:24px;background:rgba(255,255,255,.01)}.ad-footer__inner{max-width:960px;margin:0 auto;display:flex;align-items:center;justify-content:space-between}.ad-footer__link{display:flex;align-items:center;gap:6px;font-family:var(--font-inter,"Inter",sans-serif);font-size:.8rem;font-weight:500;color:var(--color-text-muted,rgba(255,255,255,.7));text-decoration:none;transition:color .15s ease}.ad-footer__link:hover{color:var(--color-text,#ffffff)}.ad-footer__meta{display:flex;align-items:center;gap:8px;font-family:JetBrains Mono,monospace;font-size:.65rem;color:var(--color-text-faint,rgba(255,255,255,.3));letter-spacing:.02em}.ad-footer__dot{color:var(--color-text-faint,rgba(255,255,255,.15))}.ad-footer__immersive{display:flex;align-items:center;gap:6px;padding:6px 14px;border-radius:6px;border:1px solid rgba(255,255,255,.08);background:transparent;color:var(--color-text-muted,rgba(255,255,255,.7));font-family:var(--font-inter,"Inter",sans-serif);font-size:.75rem;font-weight:500;cursor:pointer;transition:all .2s ease}.ad-footer__immersive:hover{background:rgba(255,255,255,.04);color:var(--color-text,#ffffff);border-color:rgba(255,255,255,.15)}.ad-immersive{position:relative}.ad-immersive__exit{position:fixed;top:16px;left:16px;z-index:100;display:flex;align-items:center;gap:6px;padding:8px 14px;border-radius:8px;border:1px solid rgba(255,255,255,.1);background:rgba(10,10,15,.85);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);color:rgba(255,255,255,.5);font-family:var(--font-inter,"Inter",sans-serif);font-size:.72rem;font-weight:500;letter-spacing:.02em;cursor:pointer;transition:all .25s ease;opacity:.4}.ad-immersive__exit:hover{opacity:1;background:rgba(10,10,15,.95);border-color:rgba(255,255,255,.2);color:rgba(255,255,255,.9)}.ad-immersive__exit-text{display:inline}@media (max-width:1023px){.ad-spec__grid{grid-template-columns:repeat(2,1fr)}.ad-spec__viz-list{grid-template-columns:1fr}}@media (max-width:768px){.ad-toolbar{padding:0 16px;height:48px}.ad-toolbar__badge--sub,.ad-toolbar__immersive-label{display:none}.ad-hero{padding:48px 16px 36px}.ad-hero__meta{gap:6px}.ad-hero__actions{flex-direction:column;gap:10px}.ad-hero__cta{width:100%;justify-content:center}.ad-spec{padding:0 16px;margin-bottom:32px}.ad-spec__grid{grid-template-columns:1fr 1fr;gap:8px}.ad-spec__palette{gap:6px}.ad-spec__palette-hex{display:none}.ad-content{padding:0 0 48px}.ad-content__frame{border-radius:0;border-left:none;border-right:none}.ad-content__frame .bh-essay{border-radius:0}.ad-footer__inner{flex-direction:column;gap:16px;text-align:center}.ad-footer__meta{flex-wrap:wrap;justify-content:center}.ad-immersive__exit{top:12px;left:12px;padding:6px 10px}.ad-immersive__exit-text{display:none}}@media (max-width:480px){.ad-hero__title{font-size:1.75rem}.ad-hero__subtitle{font-size:.9rem}.ad-spec__grid{grid-template-columns:1fr}}@media (prefers-reduced-motion:reduce){.ad-footer__immersive,.ad-hero__cta,.ad-immersive__exit,.ad-spec__content,.ad-spec__toggle-icon,.ad-toolbar__immersive{transition:none}}:root{--bh-void:#050508;--bh-void-elevated:#0a0a10;--bh-text-primary:#e0dcd8;--bh-text-secondary:#8a8580;--bh-text-caption:#6a6560;--bh-accretion-gold:#c4922a;--bh-accretion-gold-dim:#8a6820;--bh-lensing-blue:#3d7ec7;--bh-lensing-blue-dim:#2a5a8f;--bh-quantum-violet:#6b4fa0;--bh-quantum-violet-dim:#4a3670;--bh-horizon-teal:#1a9e8f;--bh-danger-red:#b5382a;--bh-danger-red-dim:#7a2820;--bh-diagram-line:#4a4a5a;--bh-diagram-line-hover:#7a7a8a;--bh-singularity-white:#ffffff;--bh-glow-gold:0 0 20px rgba(196,146,42,0.3);--bh-glow-blue:0 0 15px rgba(61,126,199,0.25);--bh-glow-violet:0 0 15px rgba(107,79,160,0.25);--bh-glow-teal:0 0 12px rgba(26,158,143,0.2)}.bh-essay{background-color:var(--bh-void);color:var(--bh-text-primary);font-family:Newsreader,"Source Serif Pro",Georgia,Times New Roman,serif;font-size:clamp(1.05rem,1.8vw,1.2rem);line-height:1.85;letter-spacing:0;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh;overflow-x:hidden}.bh-title{font-size:clamp(2.5rem,5vw,3.5rem);font-weight:700;line-height:1.1;letter-spacing:-.02em;color:var(--bh-text-primary);margin:0 0 .5em}.bh-subtitle,.bh-title{font-family:Newsreader,"Source Serif Pro",Georgia,serif;text-align:center}.bh-subtitle{font-size:clamp(1.1rem,2vw,1.35rem);font-weight:400;font-style:italic;line-height:1.4;color:var(--bh-text-secondary);margin:0 0 3rem}.bh-section-heading{font-family:Newsreader,"Source Serif Pro",Georgia,serif;font-size:clamp(1.75rem,3.5vw,2.25rem);font-weight:600;line-height:1.2;letter-spacing:-.01em;color:var(--bh-text-primary);margin:0 0 1.5rem}.bh-prose p{margin:0 0 1.5em;max-width:680px}.bh-caption{font-family:JetBrains Mono,IBM Plex Mono,Fira Code,monospace;font-size:clamp(.7rem,1.2vw,.8rem);font-weight:400;line-height:1.5;letter-spacing:.04em;text-transform:uppercase;color:var(--bh-text-secondary)}.bh-citation{font-family:JetBrains Mono,IBM Plex Mono,monospace;font-size:.7rem;font-weight:400;color:var(--bh-text-caption);opacity:.8}.bh-pull-quote{font-family:Newsreader,"Source Serif Pro",Georgia,serif;font-size:clamp(1.3rem,2.5vw,1.6rem);font-weight:400;font-style:italic;line-height:1.5;color:var(--bh-accretion-gold);border-left:3px solid var(--bh-accretion-gold-dim);padding:.5rem 0 .5rem 1.5rem;margin:3rem 0;max-width:600px}.bh-container{max-width:1400px;margin:0 auto;padding:0 24px}.bh-prose-container{max-width:680px;margin:0 auto}.bh-vis-container{max-width:1000px;margin:0 auto;padding:2rem 0}.bh-vis-container--3d{max-width:100%;padding:0}.bh-vis-caption{max-width:680px;margin:1rem auto 0;padding:0 24px;font-size:.85rem;line-height:1.6;color:var(--bh-text-caption);text-align:center;font-style:italic}.bh-spacetime-viz{width:100%;position:relative;border-radius:8px;overflow:hidden;background:#050508}.bh-spacetime-viz canvas{display:block;width:100%!important;height:100%!important}.bh-spacetime-viz__labels{position:absolute;bottom:16px;left:16px;display:flex;flex-direction:column;gap:6px;z-index:2;pointer-events:none}.bh-spacetime-viz__label{display:flex;align-items:center;gap:8px;font-family:JetBrains Mono,Fira Code,monospace;font-size:.7rem;color:var(--bh-text-secondary);letter-spacing:.03em}.bh-spacetime-viz__label-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0}.bh-hero{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:85vh;padding:4rem 24px;text-align:center;position:relative}.bh-section{padding:100px 24px;position:relative}.bh-section--quantum{background:linear-gradient(180deg,var(--bh-void) 0,#080510 50%,var(--bh-void) 100%)}.bh-eht-diagram{position:relative;width:100%;max-width:700px;aspect-ratio:7/5;margin:3rem auto}.bh-eht-diagram__ring{position:absolute;width:46%;aspect-ratio:1;top:50%;left:50%;transform:translate(-50%,-50%)}.bh-eht-ring__outer{position:absolute;inset:0;border-radius:50%;background:radial-gradient(circle,transparent 35%,#1a1008 40%,#c4922a 45%,#d4a63a 50%,#c4922a 55%,#1a1008 60%,transparent 65%);box-shadow:var(--bh-glow-gold),0 0 60px rgba(196,146,42,.15);animation:bh-ring-pulse 4s ease-in-out infinite}.bh-eht-ring__shadow{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:40%;height:40%;border-radius:50%;background:var(--bh-void)}.bh-eht-ring__asymmetry{position:absolute;inset:0;border-radius:50%;background:linear-gradient(0deg,rgba(212,166,58,.35),transparent 55%);animation:bh-doppler-breathe 6s ease-in-out infinite}.bh-eht-diagram__ring:after{content:"";position:absolute;inset:0;border-radius:50%;background:conic-gradient(from 0deg,transparent 0deg,transparent 340deg,rgba(212,166,58,.08) 348deg,rgba(255,210,100,.14) 355deg,rgba(212,166,58,.08) 358deg,transparent 1turn);mask-image:radial-gradient(circle,transparent 36%,black 42%,black 58%,transparent 64%);-webkit-mask-image:radial-gradient(circle,transparent 36%,black 42%,black 58%,transparent 64%);animation:bh-ring-orbit 90s linear infinite;pointer-events:none;z-index:1}@keyframes bh-ring-pulse{0%,to{opacity:.9}50%{opacity:1}}@keyframes bh-ring-orbit{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}@keyframes bh-doppler-breathe{0%,to{opacity:.8}50%{opacity:1}}@media (prefers-reduced-motion:reduce){.bh-eht-ring__asymmetry,.bh-eht-ring__outer{animation:none}.bh-eht-diagram__ring:after{animation:none;opacity:0}}.bh-eht-diagram__svg{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:2}.bh-eht-diagram__leader{opacity:0;stroke-dasharray:200;stroke-dashoffset:200;transition:opacity .4s ease,stroke-dashoffset .8s ease}.bh-eht-diagram__leader--visible{opacity:1;stroke-dashoffset:0}.bh-eht-diagram__dot{opacity:0;transition:opacity .4s ease}.bh-eht-diagram__dot--visible{opacity:.8}.bh-eht-diagram__label{position:absolute;max-width:200px;opacity:0;transition:opacity .6s ease;z-index:3}.bh-eht-diagram__label--visible{opacity:1}.bh-eht-diagram__label-title{display:block;font-family:JetBrains Mono,monospace;font-size:.8rem;font-weight:600;color:var(--bh-accretion-gold);margin-bottom:.25em}.bh-eht-diagram__label-desc{display:block;font-family:JetBrains Mono,monospace;font-size:.72rem;line-height:1.45;color:var(--bh-text-secondary)}.bh-observer-split{display:grid;grid-template-columns:1fr 1fr;gap:2px;max-width:900px;margin:3rem auto;border-radius:8px;overflow:hidden}.bh-observer-panel{background:var(--bh-void-elevated);padding:2rem;min-height:300px;display:flex;flex-direction:column;justify-content:center;transition:background-color .4s ease}.bh-observer-panel--external{border-right:1px solid var(--bh-diagram-line)}.bh-observer-panel__title{font-family:JetBrains Mono,monospace;font-size:.75rem;letter-spacing:.06em;text-transform:uppercase;color:var(--bh-text-secondary);margin-bottom:1.5rem}.bh-observer-panel__scene{display:flex;flex-direction:column;align-items:center;gap:1rem;margin-bottom:1.5rem}.bh-observer-panel__clock{font-family:JetBrains Mono,monospace;font-size:1.5rem;color:var(--bh-text-primary);transition:all .3s ease}.bh-observer-panel__clock--frozen{color:var(--bh-danger-red);opacity:.4}.bh-observer-panel__description{font-size:.95rem;line-height:1.6;color:var(--bh-text-secondary)}.bh-crossing{position:relative;height:600px;display:flex;flex-direction:column;align-items:center;justify-content:center;overflow:hidden}.bh-crossing__starfield{position:absolute;inset:0;transition:transform .3s linear}.bh-crossing__star{position:absolute;width:2px;height:2px;background:var(--bh-text-primary);border-radius:50%;opacity:.6;transition:all .5s ease}.bh-crossing__horizon-line{width:100%;height:1px;background:var(--bh-horizon-teal);opacity:0;transition:opacity .2s ease;position:absolute;top:50%}.bh-crossing__horizon-line--flash{opacity:.6;box-shadow:var(--bh-glow-teal)}.bh-crossing__label{font-family:JetBrains Mono,monospace;font-size:.8rem;color:var(--bh-text-secondary);text-align:center;position:relative;z-index:1}.bh-vis-container--penrose3d{max-width:720px;margin:2rem auto 3rem}.bh-penrose-3d{position:relative;border-radius:12px;overflow:hidden;border:1px solid rgba(61,126,199,.1);background:#050508}.bh-penrose-3d__canvas{width:100%;min-height:420px}.bh-penrose-3d__canvas canvas{display:block;width:100%!important;height:auto!important;border-radius:12px}.bh-penrose-3d__hint{position:absolute;bottom:0;left:0;right:0;padding:12px 20px;background:linear-gradient(transparent,rgba(5,5,8,.9));font-family:JetBrains Mono,monospace;font-size:.72rem;color:var(--bh-lensing-blue,#3d7ec7);text-align:center;line-height:1.5;letter-spacing:.02em;pointer-events:none}@media (max-width:768px){.bh-vis-container--penrose3d{max-width:100%;margin:1.5rem 0 2rem}.bh-penrose-3d__canvas{min-height:320px}.bh-penrose-3d__hint{font-size:.65rem;padding:10px 16px}}.bh-tidal-comparison{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;max-width:900px;margin:3rem auto}.bh-tidal-card{background:var(--bh-void-elevated);border-radius:12px;padding:2rem 1.5rem;text-align:center;border:1px solid rgba(74,74,90,.2);transition:border-color .3s ease}.bh-tidal-card:hover{border-color:rgba(74,74,90,.4)}.bh-tidal-card__name{font-family:JetBrains Mono,monospace;font-size:.7rem;letter-spacing:.06em;text-transform:uppercase;color:var(--bh-text-secondary);margin-bottom:.5rem}.bh-tidal-card__mass{font-size:1.1rem;font-weight:600;color:var(--bh-text-primary);margin-bottom:.25rem}.bh-tidal-card__radius{font-family:JetBrains Mono,monospace;font-size:.7rem;color:var(--bh-text-caption);margin-bottom:1.25rem}.bh-tidal-card__figure{height:200px;display:flex;align-items:center;justify-content:center;margin-bottom:1rem}.bh-tidal-card__verdict{font-size:.9rem;line-height:1.5;color:var(--bh-text-secondary)}.bh-tidal-card__verdict--lethal{color:var(--bh-danger-red)}.bh-tidal-card__verdict--safe{color:var(--bh-horizon-teal)}.bh-info-flow{display:grid;grid-template-columns:1fr auto 1fr;gap:1.5rem 2rem;align-items:center;max-width:960px;margin:3rem auto;padding:2rem}.bh-info-flow__column-label{font-family:JetBrains Mono,monospace;font-size:.65rem;letter-spacing:.1em;text-transform:uppercase;color:var(--bh-text-caption);margin-bottom:.5rem}.bh-info-flow__input{display:flex;flex-direction:column;gap:.75rem}.bh-info-flow__item{display:flex;align-items:center;gap:.75rem;padding:.75rem 1rem;background:var(--bh-void-elevated);border-radius:8px;border:1px solid rgba(74,74,90,.25)}.bh-info-flow__item-icon{flex-shrink:0;display:flex;align-items:center;justify-content:center}.bh-info-flow__svg-icon{display:block}.bh-info-flow__item-text{display:flex;flex-direction:column;gap:.1rem}.bh-info-flow__item-label{font-size:.9rem;color:var(--bh-text-primary);font-weight:500}.bh-info-flow__item-sublabel{font-family:JetBrains Mono,monospace;font-size:.7rem;color:var(--bh-text-caption)}.bh-info-flow__center{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:.25rem}.bh-info-flow__conv-arrows,.bh-info-flow__div-arrows{flex-shrink:0}.bh-info-flow__hole-wrap{position:relative;width:90px;height:90px;display:flex;align-items:center;justify-content:center}.bh-info-flow__accretion-ring{position:absolute;inset:-6px;border-radius:50%;background:radial-gradient(circle,transparent 40%,rgba(196,146,42,.12) 55%,transparent 70%);box-shadow:0 0 30px rgba(196,146,42,.08);animation:bh-ring-pulse 4s ease-in-out infinite}.bh-info-flow__hole{width:70px;height:70px;border-radius:50%;background:var(--bh-void);border:1.5px solid var(--bh-diagram-line);box-shadow:inset 0 0 20px rgba(0,0,0,.9),0 0 15px rgba(0,0,0,.5);position:relative;z-index:1}.bh-info-flow__center-label{flex-basis:100%;text-align:center;margin-top:.25rem}.bh-info-flow__output{display:flex;flex-direction:column;gap:.75rem}.bh-info-flow__thermal-box{aspect-ratio:1;max-width:180px;background:var(--bh-void-elevated);border-radius:8px;border:1px solid rgba(74,74,90,.15);padding:.5rem;opacity:.7}.bh-info-flow__thermal-desc{display:flex;flex-direction:column;gap:.15rem}.bh-info-flow__thermal-title{font-family:JetBrains Mono,monospace;font-size:.75rem;color:var(--bh-quantum-violet);letter-spacing:.04em}.bh-info-flow__thermal-detail{font-size:.8rem;color:var(--bh-text-caption);line-height:1.4}.bh-info-flow__paradox{grid-column:1/-1;text-align:center;padding:1.5rem;border:1px solid var(--bh-quantum-violet-dim);border-radius:8px;background:rgba(107,79,160,.05);margin-top:.5rem}.bh-info-flow__paradox-label{font-family:JetBrains Mono,monospace;font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--bh-quantum-violet);margin-bottom:.5rem}.bh-info-flow__paradox-text{font-size:.95rem;line-height:1.6;color:var(--bh-text-secondary);max-width:600px;margin:0 auto}.bh-info-flow__input{opacity:0;transition:opacity .4s ease}.bh-info-flow--active .bh-info-flow__input{opacity:1}.bh-info-flow__item{opacity:0;transform:translateX(-20px);transition:opacity .5s ease,transform .5s ease}.bh-info-flow--active .bh-info-flow__item{opacity:1;transform:translateX(0)}.bh-info-flow--active .bh-info-flow__item--book{transition-delay:.2s}.bh-info-flow--active .bh-info-flow__item--person{transition-delay:.4s}.bh-info-flow--active .bh-info-flow__item--star{transition-delay:.6s}.bh-info-flow__center{opacity:0;transition:opacity .5s ease}.bh-info-flow--active .bh-info-flow__center{opacity:1;transition-delay:.4s}.bh-info-flow__output{opacity:0;transition:opacity .5s ease}.bh-info-flow--active .bh-info-flow__output{opacity:1;transition-delay:.8s}.bh-info-flow__paradox{opacity:0;transform:translateY(10px);transition:opacity .6s ease,transform .6s ease}.bh-info-flow--active .bh-info-flow__paradox{opacity:1;transform:translateY(0);transition-delay:1.4s}.bh-info-flow--active .bh-info-flow__icon--book{animation:bh-icon-rock 3s ease-in-out 1s infinite}@keyframes bh-icon-rock{0%,to{transform:rotate(0deg)}30%{transform:rotate(-5deg)}70%{transform:rotate(5deg)}}.bh-info-flow--active .bh-info-flow__icon--person{animation:bh-icon-spin 6s linear 1.2s infinite}@keyframes bh-icon-spin{0%{transform:rotateY(0deg)}to{transform:rotateY(1turn)}}.bh-info-flow--active .bh-info-flow__icon--star{animation:bh-icon-pulse 2.5s ease-in-out 1.4s infinite}@keyframes bh-icon-pulse{0%,to{transform:scale(1)}50%{transform:scale(1.15)}}.bh-info-flow--active .bh-info-flow__thermal-box svg{animation:bh-thermal-drift 8s linear 1.2s infinite}@keyframes bh-thermal-drift{0%{transform:translate(0)}25%{transform:translate(2px,-2px)}50%{transform:translateY(-3px)}75%{transform:translate(-2px,-2px)}to{transform:translate(0)}}.bh-info-flow--active .bh-info-flow__conv-arrows{animation:bh-arrow-in 2.5s ease-in-out .6s infinite}@keyframes bh-arrow-in{0%,to{opacity:.3;transform:translateX(0)}50%{opacity:.8;transform:translateX(3px)}}.bh-info-flow--active .bh-info-flow__div-arrows{animation:bh-arrow-out 3s ease-in-out 1s infinite}@keyframes bh-arrow-out{0%,to{opacity:.15;transform:translateX(0)}50%{opacity:.35;transform:translateX(3px)}}.bh-sources{border-top:1px solid rgba(74,74,90,.2);padding:4rem 24px;max-width:680px;margin:0 auto}.bh-sources__title{font-family:JetBrains Mono,monospace;font-size:.75rem;letter-spacing:.06em;text-transform:uppercase;color:var(--bh-text-secondary);margin-bottom:1.5rem}.bh-sources__list{display:flex;flex-direction:column;gap:.5rem}.bh-sources__item{font-size:.85rem;line-height:1.5;color:var(--bh-text-caption)}.bh-progress{position:fixed;top:0;left:0;width:100%;height:2px;z-index:100;background:transparent}.bh-progress__bar{height:100%;background:var(--bh-accretion-gold);transform-origin:left;transition:transform .1s linear}.bh-fade-in{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}.bh-fade-in--visible{opacity:1;transform:translateY(0)}@media (max-width:768px){.bh-observer-split{grid-template-columns:1fr}.bh-observer-panel--external{border-right:none;border-bottom:1px solid var(--bh-diagram-line)}.bh-tidal-comparison{grid-template-columns:1fr;max-width:400px}.bh-info-flow{grid-template-columns:1fr;text-align:center}.bh-info-flow__center{flex-direction:row;justify-content:center;flex-wrap:wrap}.bh-info-flow__thermal-box{max-width:140px;margin:0 auto}.bh-section{padding:60px 20px}.bh-hero{min-height:70vh;padding:3rem 20px}.bh-pull-quote{padding-left:1rem;margin:2rem 0}.bh-eht-diagram{max-width:500px}.bh-eht-diagram__label{max-width:150px}.bh-eht-diagram__label-title{font-size:.7rem}.bh-eht-diagram__label-desc{font-size:.65rem}}@media (max-width:480px){.bh-eht-diagram{max-width:360px}.bh-eht-diagram__label{max-width:110px}.bh-eht-diagram__label-title{font-size:.65rem}.bh-eht-diagram__label-desc{font-size:.6rem}}@media (prefers-reduced-motion:reduce){.bh-fade-in{opacity:1;transform:none;transition:none}@keyframes bh-ring-pulse{0%,to{opacity:1}}.bh-crossing__horizon-line,.bh-crossing__star,.bh-observer-panel{transition:none}.bh-info-flow__center,.bh-info-flow__input,.bh-info-flow__item,.bh-info-flow__output,.bh-info-flow__paradox{opacity:1!important;transform:none!important;transition:none!important}.bh-info-flow__conv-arrows,.bh-info-flow__div-arrows,.bh-info-flow__icon--book,.bh-info-flow__icon--person,.bh-info-flow__icon--star,.bh-info-flow__thermal-box svg{animation:none!important}}