.og-guide{--og-pad:clamp(22px,4.5vw,72px);--og-gap:clamp(32px,5vw,72px)}
.og-hero{padding:34px var(--og-pad) 64px;max-width:1600px;margin:auto}
.og-breadcrumb{display:flex;flex-wrap:wrap;gap:14px;color:var(--muted);font-size:12px;margin-bottom:55px}.og-breadcrumb a{text-decoration:underline;text-underline-offset:4px}
.og-hero-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:var(--og-gap);align-items:center}.og-hero-grid>div,.og-hero-grid>figure{min-width:0}
.og-hero h1{font:clamp(57px,6.7vw,102px)/1.02 var(--display);letter-spacing:-.052em;margin:25px 0}.og-hero h1 em{color:var(--aqua);font-weight:400}.og-deck{font-size:clamp(17px,1.5vw,22px);line-height:1.65;max-width:38ch;color:#c5d0ce}.og-byline{display:flex;flex-wrap:wrap;gap:10px 25px;color:var(--muted);font-size:12px;line-height:1.6;margin:25px 0 32px}.og-byline a{text-decoration:underline}
.og-hero-diagram{margin:0}.og-hero-diagram img{width:100%;height:auto}.og-hero-diagram figcaption,.og-figure figcaption{color:var(--muted);font-size:13px;line-height:1.65;margin-top:16px;max-width:75ch}
.og-jump{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));padding:0 var(--og-pad);max-width:1600px;margin:0 auto 16px}.og-jump a{border-top:1px solid var(--line);padding:17px 8px 18px 0;display:flex;gap:10px;font-size:12px;line-height:1.4}.og-jump a span{color:var(--copper);font-size:10px}.og-jump a:hover{color:var(--aqua)}
.og-section{padding:clamp(54px,6vw,90px) var(--og-pad);max-width:1600px;margin:auto;border-top:1px solid var(--line);scroll-margin-top:24px}.og-section h2{font:clamp(35px,4.5vw,66px)/1.08 var(--display);letter-spacing:-.04em;margin:15px 0 32px}.og-section h2 em{font-weight:400;color:var(--aqua)}.og-section h3{font:clamp(23px,2vw,31px)/1.2 var(--display);letter-spacing:-.02em}
.og-reading{display:grid;grid-template-columns:minmax(240px,340px) minmax(0,1fr);gap:var(--og-gap)}.og-section-intro{align-self:start;min-width:0}.og-prose{min-width:0;max-width:80ch}.og-prose p{font-size:17px;line-height:1.85;color:#c8d2cf;margin-bottom:25px}.og-prose>.text-link{line-height:1.6;white-space:normal}
.og-citations{white-space:nowrap;font-size:.76em}.og-citations a{color:var(--copper);text-decoration:underline;text-underline-offset:3px}.og-figure{margin:32px 0}.og-figure img{width:100%;height:auto;border:1px solid var(--line);background:#0c171e}
.og-definition-grid,.og-evidence-grid,.og-open-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.og-definition-grid>article,.og-evidence-grid>article,.og-open-grid>article{min-width:0;padding:28px;border:1px solid var(--line);background:var(--panel)}.og-definition-grid p,.og-evidence-grid p,.og-open-grid p,.og-note p,.og-section-lead{font-size:16px;line-height:1.8;color:#c5cfcd}.og-key{display:inline-block;font-size:12px;letter-spacing:.13em;border-bottom:3px solid;padding-bottom:8px;margin-bottom:20px}.og-key-horizon{color:var(--copper)}.og-key-photon{color:var(--aqua)}.og-key-orbit{color:#c1afd9}
.og-note{margin-top:30px;padding:25px 28px;border-left:3px solid var(--copper);background:#14232b}.og-note strong{font-weight:500;color:var(--cream)}.og-note p{max-width:105ch;margin:13px 0 0}.og-section-lead{max-width:90ch;margin:20px 0 32px}.og-evidence-grid>article>span,.og-source-grid>article>span,.og-reading-grid>a>span{font-size:10px;letter-spacing:.16em;color:var(--copper)}.og-evidence-grid h3,.og-open-grid h3{margin:20px 0}.og-evidence-grid a{font-size:13px;text-decoration:underline;text-underline-offset:4px;line-height:1.65}
.og-questions{max-width:1250px}.og-questions details{border-top:1px solid var(--line);padding:0 4px}.og-questions summary{font-size:18px;cursor:pointer;min-height:54px;padding:18px 0;color:var(--cream);line-height:1.6}.og-questions details p{max-width:80ch;line-height:1.85;font-size:16px;color:#c5cfcd;padding:0 22px 18px}.og-reading-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.og-reading-grid>a{display:flex;flex-direction:column;padding:28px;border:1px solid var(--line);background:var(--panel);min-width:0;transition:border-color .2s,background .2s}.og-reading-grid>a:hover{border-color:var(--copper);background:#17262e}.og-reading-grid h3{margin:22px 0 18px}.og-reading-grid p{font-size:15px;line-height:1.8;color:#bfcac7}.og-reading-grid b{font-size:12px;font-weight:500;color:var(--aqua);margin-top:auto;padding-top:15px;line-height:1.6}
.og-source-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,340px),1fr));gap:22px}.og-source-grid article{min-width:0;padding:26px;border:1px solid var(--line);scroll-margin-top:25px}.og-source-grid article:target{border:2px solid var(--copper);background:#1b292e;padding:25px}.og-source-grid article:target>span{font-weight:700;color:#f2d2aa}.og-source-grid h3{font-size:24px;margin:17px 0;overflow-wrap:anywhere}.og-source-grid p{font-size:14px;line-height:1.8;color:var(--muted)}.og-source-return{display:inline-block;text-decoration:underline;text-underline-offset:4px;font-size:12px;line-height:1.6;margin-top:7px}.og-update-note{color:var(--muted);max-width:90ch;font-size:13px;line-height:1.8;margin:30px 0 0}.og-guide :focus-visible{outline:2px solid var(--aqua);outline-offset:5px}
@media(min-width:960px) and (min-height:640px){.og-section-intro{position:sticky;top:28px}}
@media(max-width:1100px){.og-jump{grid-template-columns:repeat(4,minmax(0,1fr))}.og-reading-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.og-definition-grid,.og-evidence-grid,.og-open-grid{grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr))}}
@media(max-width:959px){.og-hero-grid,.og-reading{grid-template-columns:1fr}.og-hero h1{font-size:clamp(56px,9vw,88px)}.og-hero h1 br:last-child{display:none}.og-hero-diagram{max-width:580px;margin:auto}.og-hero{padding-bottom:40px}.og-section-intro h2{margin-bottom:0}.og-prose{max-width:85ch}.og-tool-live{grid-template-columns:1fr}.og-source-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:700px){.og-breadcrumb{margin-bottom:36px}.og-jump{grid-template-columns:repeat(3,minmax(0,1fr))}.og-jump a{font-size:11px;gap:7px}.og-definition-grid,.og-evidence-grid,.og-open-grid,.og-reading-grid,.og-source-grid,.og-slider-grid{grid-template-columns:1fr}.og-presets{gap:8px}.og-presets button{padding:12px 10px;font-size:12px}.og-presets button span{font-size:11px;line-height:1.5}.og-tool-controls{padding:17px}.og-tool-live>div{padding:21px}.og-prose p{font-size:16px}.og-section{scroll-margin-top:15px}.og-section h2{font-size:41px}.og-section h3{font-size:26px}.og-questions summary{font-size:17px}.og-byline{flex-direction:column;gap:7px}}
@media(max-width:370px){.og-jump{grid-template-columns:repeat(2,minmax(0,1fr))}.og-presets{grid-template-columns:1fr}.og-hero h1{font-size:50px}}
@media(prefers-reduced-motion:reduce){.og-reading-grid>a{transition:none}}
@media print{.og-jump,.og-tool-controls,.og-tool-live,.og-hero .button{display:none!important}.og-hero-grid,.og-reading{display:block}.og-section-intro{position:static}.og-source-grid,.og-reading-grid{grid-template-columns:1fr}.og-section{break-inside:auto}.og-guide{color:#111}.og-section p{color:#222}}

.og-filters[hidden],.og-filter-status[hidden],.og-evidence-grid>[hidden]{display:none}
.og-filters{display:flex;flex-wrap:wrap;gap:12px;margin:30px 0 16px}.og-filters button{min-height:48px;padding:12px 20px;border:1px solid #688c95;background:#0b1922;color:var(--cream);font:14px var(--sans);cursor:pointer}.og-filters button[aria-pressed=true]{background:#224553;border-color:#ace2e6;color:#fff}.og-filter-status{color:var(--aqua);font-size:14px;line-height:1.6;margin-bottom:24px;min-height:1.6em}
.og-evidence-grid article{display:flex;flex-direction:column}.og-evidence-grid dl{margin:0}.og-evidence-grid dt{font-size:10px;text-transform:uppercase;letter-spacing:.12em;color:var(--aqua);margin:20px 0 7px}.og-evidence-grid dd{margin:0;color:#c5cfcd;font-size:15px;line-height:1.8}.og-evidence-grid dd:last-child{padding-top:2px}.og-evidence-grid h3{min-height:2.4em}.og-table-scroll{margin-bottom:30px}.og-table-scroll table{width:100%;min-width:780px;border-collapse:collapse;font-size:15px}.og-table-scroll caption{text-align:left;padding:17px;line-height:1.7;color:var(--muted);font-size:13px}.og-table-scroll th,.og-table-scroll td{vertical-align:top;text-align:left;padding:20px;border-top:1px solid var(--line);line-height:1.8}.og-table-scroll thead th{font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:var(--aqua)}.og-table-scroll tbody th{font-family:var(--display);font-size:23px;min-width:140px}.og-table-scroll a{text-decoration:underline;text-underline-offset:4px}.og-update-note a{color:var(--aqua);text-decoration:underline;text-underline-offset:4px}.og-index-hero>p:not(.eyebrow),.og-index-reading>p:not(.eyebrow){max-width:75ch;line-height:1.85}.og-index-hero h1{font-size:clamp(46px,5.8vw,84px)}
@media(max-width:700px){.og-filters{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.og-filters button{font-size:13px;padding:12px 9px}.og-evidence-grid h3{min-height:0}.og-hero h1{font-size:clamp(49px,11vw,72px)}}
@media print{.og-filters,.og-filter-status{display:none!important}.og-evidence-grid>[hidden]{display:block!important}.og-table-scroll{overflow:visible}.og-table-scroll table{min-width:0;font-size:10px}.og-table-scroll th,.og-table-scroll td{padding:8px}.og-evidence-grid{grid-template-columns:1fr}}