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#2b4257;background:linear-gradient(#0b1c2e,#081421);border-radius:8px;padding:22px;display:flex;flex-direction:column}.sim-panel-heading{display:flex;justify-content:space-between;align-items:start;gap:8px;margin-bottom:27px}.sim-panel-heading h2{font-size:20px;margin:8px 0 0}.status-pulse{font:700 9px var(--mono);color:#67deb8;border:1px solid #23785c;padding:5px 6px}.control-group{margin-bottom:22px}.control-group label{display:flex;justify-content:space-between;gap:12px;align-items:center;color:#d9e8f5;font-size:12px;font-weight:650;margin-bottom:12px}.control-group output{font:700 12px var(--mono);color:#7bdcf9}.control-group small{font-size:10px;color:#7692aa}.control-group input[type=range]{display:block;width:100%;appearance:none;height:4px;border-radius:4px;background:linear-gradient(90deg,#378bbd,#64e0f4);margin:10px 0 10px;accent-color:#6de0fd}.control-group input[type=range]::-webkit-slider-thumb{appearance:none;width:13px;height:13px;border:2px solid #fff;background:#6cddfa;border-radius:50%;box-shadow:0 0 14px #40d6ff7c}.control-group input[type=range]::-moz-range-thumb{width:11px;height:11px;background:#6cddfa;border:2px solid #fff;border-radius:50%}.panel-divider{height:1px;background:#25394d;margin:2px 0 19px}.telemetry-head{display:flex;justify-content:space-between;gap:8px;align-items:center}.telemetry-head>span:last-child{font:700 8px var(--mono);color:#57748d}.telemetry{margin-top:13px}.telemetry>div{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:8px;background:#0e2638;padding:9px 11px}.telemetry span{font-size:11px;color:#a6c0d3}.telemetry strong{font:700 15px var(--mono);color:#a0efff}.sim-action-row{display:flex;gap:8px;margin-top:15px}.btn-small{min-height:35px;padding:8px 12px;flex:1;font-size:11px;gap:4px}.sim-caution{font-size:10px;line-height:1.65;color:#7290a7;margin:15px 0 0}.sim-caution span{font-size:14px;color:#75c5dc}.sim-stages-section{padding-top:36px;padding-bottom:60px}.sim-stages-heading h2{font-size:29px;margin:9px 0 8px}.sim-stages-heading p{font-size:13px}.stage-pills{display:flex;flex-wrap:wrap;gap:7px;margin:23px 0 17px}.stage-pills button{border:1px solid #2a455d;background:#0b1a2b;color:#839fb5;padding:10px 13px;font:700 10px var(--mono);letter-spacing:.025em;transition:all .2s}.stage-pills button.is-active,.stage-pills button:hover{color:#031a29;background:#6dd8f2;border-color:#6dd8f2}.stage-detail{display:flex;gap:20px;align-items:center;background:#0b1d2d;border:1px solid #234056;padding:20px;flex-wrap:wrap}.stage-detail span{font:700 10px var(--mono);color:#72cbe8}.stage-detail strong{font-size:14px}.stage-detail p{font-size:12px;margin:0;flex:1;min-width:230px}
.site-footer{border-top:1px solid #21364c;background:#070d18;padding-top:75px;position:relative;z-index:2}.footer-top{display:grid;grid-template-columns:1fr 1.4fr;gap:90px;padding-bottom:70px}.footer-brand p{max-width:340px;font-size:13px;line-height:1.85;margin-top:22px}.footer-links{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.footer-links div{display:flex;flex-direction:column;gap:11px}.footer-links span{color:#7abfdf;font:700 10px var(--mono);letter-spacing:.12em;margin-bottom:12px}.footer-links a{font-size:12px;color:#9cabbe}.footer-links a:hover{color:#79d9ff}.footer-bottom{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;border-top:1px solid #1b2e43;padding:24px 0 28px;color:#637e94;font:600 9px var(--mono);letter-spacing:.06em}.guide-trigger{position:fixed;z-index:81;bottom:23px;right:24px;display:flex;align-items:center;gap:11px;border:1px solid #48b7dc;border-radius:30px;padding:9px 17px 9px 9px;background:#0f3852;color:#d8f7ff;box-shadow:0 7px 36px #0009,0 0 18px #37baf326;font:700 12px var(--sans)}.guide-symbol{width:30px;height:30px;display:grid;place-items:center;border-radius:50%;background:#62dcff;color:#08334d;font-size:22px}.guide-trigger:hover{background:#14506e;color:#fff}.guide-panel{position:fixed;right:24px;bottom:83px;width:min(390px,calc(100vw - 32px));height:min(560px,calc(100dvh - 110px));z-index:82;background:#091726;border:1px solid #355571;box-shadow:0 13px 65px #000d;display:flex;flex-direction:column;border-radius:11px;overflow:hidden}.guide-panel[hidden]{display:none}.guide-header{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #264056;padding:15px 18px;background:#10243a}.guide-header strong{font-size:14px;margin-left:7px}.guide-header small{display:block;color:#7ba8c2;font:10px var(--mono);margin-top:4px}.guide-header button{background:transparent;color:#a4cada;font-size:24px;border:0}.guide-messages{flex:1;overflow:auto;display:flex;flex-direction:column;gap:13px;padding:17px}.guide-bubble{padding:11px 14px;max-width:88%;font-size:12px;line-height:1.75;border-radius:10px}.guide-bubble.assistant{background:#173249;align-self:flex-start;color:#d0e5f5}.guide-bubble.user{background:#236589;color:#f2fbff;align-self:flex-end}.guide-suggestions{display:flex;gap:5px;padding:0 15px 14px;flex-wrap:wrap}.guide-suggestions button{font:700 10px var(--mono);background:#0b2136;border:1px solid #32536b;color:#a7d4e7;border-radius:15px;padding:7px 10px}.guide-form{display:flex;margin:0 15px;gap:7px}.guide-form input{flex:1;min-width:0;background:#07111f;color:#eefaff;border:1px solid #315571;border-radius:5px;padding:11px;font-size:12px}.guide-form button{border:0;background:#6cdbf8;color:#07233b;padding:0 15px;border-radius:5px;font-size:20px}.guide-footnote{margin:8px 16px 11px;font:10px var(--mono);color:#688aa4}
@media(max-width:1100px){.site-nav{gap:17px}.site-nav>a:not(.nav-cta){font-size:12px}.hero-copy h1{font-size:clamp(52px,5vw,70px)}.sim-workspace{grid-template-columns:minmax(0,1fr) 295px}.hero-visual{right:-14%;width:72%}}
@media(max-width:870px){.shell{width:min(100% - 42px,1220px)}.header-inner{height:70px}.nav-toggle{display:flex}.site-nav{display:none;position:absolute;top:70px;left:0;right:0;flex-direction:column;align-items:stretch;padding:20px;background:#071320;border-bottom:1px solid #315071;gap:0}.site-nav.is-open{display:flex}.site-nav>a:not(.nav-cta){font-size:15px;padding:12px}.site-nav .nav-cta{justify-content:center;margin-top:12px}.home-hero{min-height:850px;display:block;padding-top:65px}.hero-copy{max-width:650px}.hero-visual{top:325px;right:-8%;width:100%;height:525px;opacity:.72}.hero-label-top{top:25%}.hero-scroll{display:none}.metric-row{grid-template-columns:repeat(2,1fr)}.metric-row>div{border-bottom:1px solid #18283c;padding:23px 22px}.metric-row>div:first-child{padding-left:22px}.metric-row>div:nth-child(2){border-right:0}.metric-row>div:nth-child(n+3){border-bottom:0}.three-grid{grid-template-columns:repeat(2,1fr)}.mechanism-grid{grid-template-columns:repeat(2,1fr)}.feature-band-inner{grid-template-columns:1fr}.feature-band-inner>div:first-child{padding-block:65px 0}.demo-illustration{min-height:310px;max-height:370px}.demo-illustration img{max-height:420px;object-fit:contain}.sim-workspace{grid-template-columns:1fr}.sim-viewer,#sim-canvas{min-height:490px}.sim-panel{display:grid;grid-template-columns:repeat(2,1fr);gap:12px 20px}.sim-panel-heading,.panel-divider,.telemetry-head,.telemetry,.sim-action-row,.sim-caution{grid-column:1/-1}.sim-panel-heading{margin-bottom:5px}.control-group{margin-bottom:8px}.sim-intro-note{display:none}.article-layout{grid-template-columns:1fr;gap:30px}.article-aside{position:static}.aside-inner{display:none}}
@media(max-width:650px){.shell{width:calc(100% - 34px)}.section-space{padding-block:65px}.home-hero{min-height:750px;padding-block:55px 75px}.hero-copy h1{font-size:clamp(46px,10.5vw,66px)}.hero-copy h1>span{font-size:.69em;white-space:normal}.hero-lead{font-size:14px}.hero-visual{top:370px;right:-28%;width:140%;height:350px;opacity:.66}.hero-label{display:none}.hero-proof{font-size:8px;margin-top:27px}.hero-actions .btn{width:100%;justify-content:space-between}.metric-row strong{font-size:30px}.metric-row span{font-size:8px}.split-head{display:block}.split-head .outline-link{margin-top:15px}.section-heading h2{font-size:39px}.mechanism-grid,.three-grid,.number-grid,.truth-section,.model-notes,.glossary-grid{grid-template-columns:1fr}.mechanism-tile{min-height:300px}.visual-glyph{height:130px}.feature-card{min-height:260px}.feature-card h3{margin-top:25px}.feature-band h2{font-size:42px}.truth-section{gap:12px}.cta-inner{padding:32px 26px;display:block}.cta-inner .btn{margin-top:25px;width:100%;justify-content:space-between}.cta-inner h2{font-size:33px}.page-intro{padding-top:65px;padding-bottom:30px}.page-intro h1{font-size:clamp(43px,10vw,62px)}.page-intro .lead{font-size:14px}.status-line{font-size:9px}.stage-row{grid-template-columns:48px 1fr 15px;gap:10px}.stage-row h3{font-size:18px}.stage-row p{font-size:13px}.reading-note{display:block}.reading-note strong{display:block;margin-bottom:7px}.explainer-banner{display:block;padding:25px}.explainer-banner h2{font-size:23px}.explainer-banner .btn{margin-top:20px}.spec-hero{grid-template-columns:1fr;min-height:410px;padding:28px}.spec-hero img{max-height:240px}.sim-intro h1{font-size:clamp(48px,12vw,75px)}.sim-viewer,#sim-canvas{min-height:410px}.sim-overlay-stage{left:12px;bottom:72px;max-width:90%}.sim-bottomline,.sim-topline{left:12px;right:12px;font-size:8px}.sim-bottomline>span{display:none}.sim-camera{margin-left:auto}.sim-panel{grid-template-columns:1fr}.sim-panel-heading,.panel-divider,.telemetry-head,.telemetry,.sim-action-row,.sim-caution{grid-column:1}.stage-detail{gap:10px}.article-meta{gap:6px}.article-meta span{font-size:9px}.prose h2{font-size:29px}.test-row{grid-template-columns:44px 1fr;gap:10px}.test-row h2{font-size:21px}.faq-item summary{grid-template-columns:28px 1fr 18px;font-size:15px;gap:8px}.faq-item p{margin-left:35px;margin-right:12px}.footer-top{grid-template-columns:1fr;gap:40px}.footer-links{grid-template-columns:repeat(2,1fr)}.footer-bottom{font-size:8px}.guide-trigger{right:12px;bottom:12px}.guide-panel{right:12px;bottom:70px}.model-notes h2{font-size:38px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.001ms!important;transition-duration:.001ms!important}}
@media(max-width:650px){.hero-proof{position:relative;z-index:4;background:#071222df;border:1px solid #253b50;padding:9px 10px;line-height:1.8;width:fit-content;max-width:100%}}

/* Editorial art: page-specific, responsive, and explicitly labeled as concept illustrations. */
.hero-visual picture,.demo-illustration picture,.spec-hero picture{display:block;width:100%;min-width:0}
.hero-visual picture img{display:block;width:112%;height:auto}
.demo-illustration picture img{width:100%;height:auto;display:block}
.spec-hero picture img{display:block;width:100%;height:auto}
.showcase-section{padding-bottom:35px}
.editorial-visual{margin:0;position:relative;background:#071425;border:1px solid #25425e;border-radius:8px;overflow:hidden}
.editorial-visual picture{display:block;aspect-ratio:16/9;overflow:hidden}
.editorial-visual img{display:block;width:100%;height:100%;object-fit:cover}
.editorial-visual figcaption{display:flex;gap:14px;align-items:baseline;padding:15px 20px 17px;background:#0b1b2d;color:#9ab9d0;font-size:12px;line-height:1.6}
.editorial-visual figcaption span{flex:0 0 auto;color:#80dbfa;font:700 10px var(--mono);letter-spacing:.09em}
.sim-showcase{padding-bottom:55px}
@media(max-width:870px){.demo-illustration picture{display:flex;justify-content:center}.demo-illustration picture img{max-height:420px;object-fit:contain}}
@media(max-width:650px){.showcase-section{padding-bottom:25px}.editorial-visual figcaption{display:block;padding:13px 14px;font-size:11px}.editorial-visual figcaption span{display:block;margin-bottom:5px}.hero-visual picture img{width:112%}}
/* Orbital artwork and ambient gradients intentionally extend past the canvas; never create horizontal page scroll. */
html,body{max-width:100%;overflow-x:clip}

/* HIBE detailed engineering concept plates (raster only; no SVG artwork). */
.hibe-plates{display:grid;grid-template-columns:1fr;gap:27px;margin-top:26px}
.hibe-plate{margin:0;border:1px solid #27485f;border-radius:9px;overflow:hidden;background:#091625}
.hibe-plate>a{display:block;overflow:hidden}
.hibe-plate img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:contain;background:#071321}
.hibe-plate figcaption{display:flex;align-items:center;flex-wrap:wrap;gap:14px;padding:16px 22px;color:#a4bfd0;font-size:12px;line-height:1.7}
.hibe-plate figcaption strong{color:#74def4;font-size:14px}
.hibe-plate figcaption span{flex:1;min-width:190px}
.hibe-plate figcaption a{color:#c8eefa;text-decoration:underline;text-underline-offset:4px}
@media(max-width:650px){.hibe-plate figcaption{display:block;padding:14px}.hibe-plate figcaption span,.hibe-plate figcaption a{display:block;margin-top:8px}}

/* v1.4.0 user-supplied raster blueprint atlas. No SVG artwork generated. */
.schematic-intro{padding-block:8px 20px}
.schematic-jumps{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-top:30px}
.schematic-jumps span{font:700 11px var(--mono);color:#6fa5bc;letter-spacing:.15em;margin-right:10px}
.schematic-jumps a{color:#b7d8ec;background:#0c1d30;border:1px solid #31516b;border-radius:4px;padding:11px 14px;font-size:12px;text-decoration:none}
.schematic-jumps a:hover,.schematic-jumps a:focus-visible{border-color:#62def4;color:#fff}
.schematic-group{scroll-margin-top:95px;padding-top:55px}
.blueprint-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.blueprint-feature-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.blueprint-card{min-width:0;background:#0a192a;border:1px solid #29435c;border-radius:9px;overflow:hidden;transition:border-color .2s,transform .2s}
.blueprint-card:hover,.blueprint-card:focus-within{border-color:#60c5e3;transform:translateY(-3px)}
.blueprint-card-image{display:block;position:relative;aspect-ratio:16/9;overflow:hidden;background:#030a14}
.blueprint-card-image img{display:block;width:100%;height:100%;object-fit:contain}
.blueprint-image-hint{position:absolute;bottom:12px;right:12px;background:#03121be8;border:1px solid #547c94;padding:7px 9px;color:#d2f6ff;font:700 10px var(--mono);letter-spacing:.07em}
.blueprint-card-copy{padding:23px 24px 26px}
.blueprint-card-copy h3{color:#e6f5ff;font-size:clamp(20px,2vw,27px);line-height:1.2;letter-spacing:-.035em;margin:12px 0}
.blueprint-card-copy h3 a{color:inherit;text-decoration:none}
.blueprint-card-copy p{color:#99b4c9;font-size:13px;line-height:1.8;margin:0 0 19px}
.blueprint-card-copy .text-link{font-size:12px}
.blueprint-card-compact .blueprint-card-copy{padding:17px 18px 22px}
.blueprint-card-compact .blueprint-card-copy h3{font-size:21px}
.blueprint-teaser .split-head{margin-bottom:30px}
.schematic-detail-head{padding-top:75px;padding-bottom:42px;max-width:1200px}
.schematic-back{display:flex;align-items:center;gap:12px;color:#779bb4;font:600 11px var(--mono);letter-spacing:.08em;margin-bottom:35px}
.schematic-back a{color:#79dffa}
.schematic-detail-head h1{font-size:clamp(43px,6vw,78px);line-height:1.04;letter-spacing:-.055em;max-width:1150px;margin:12px 0 26px;color:#f3faff}
.schematic-detail-head .lead{font-size:17px;line-height:1.85;color:#a4c3d6;max-width:850px}
.schematic-detail-head .status-line{margin-top:24px}
.schematic-master{margin:0;border:1px solid #375776;border-radius:8px;overflow:hidden;background:#030b16}
.schematic-master>a{display:block}
.schematic-master img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:contain}
.schematic-master figcaption{display:flex;justify-content:space-between;gap:15px;align-items:center;padding:16px 22px;color:#a6c1d2;font-size:12px;line-height:1.5;background:#091b2c}
.schematic-master figcaption a{color:#8ee9ff;text-decoration:underline;text-underline-offset:3px}
.schematic-image-disclaimer{display:flex;gap:24px;padding:20px 24px;margin-top:12px;background:#0c1a2a;border-left:3px solid #e3b466;color:#adc2d1;font-size:12px;line-height:1.7}
.schematic-image-disclaimer strong{color:#f7ca85;min-width:185px;font:700 11px var(--mono);letter-spacing:.08em}
.schematic-image-disclaimer p{margin:0}
.schematic-explanation{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(290px,1fr);gap:clamp(35px,6vw,100px);align-items:start}
.schematic-prose h2,.schematic-parts h2{font-size:clamp(27px,3vw,41px);letter-spacing:-.035em;line-height:1.19;color:#f3faff;margin:12px 0 19px}
.schematic-prose p{font-size:15px;color:#aac4d6;line-height:1.95;margin:0 0 43px}
.schematic-open-question{border:1px solid #345775;background:#0a2133;padding:25px 27px;border-radius:5px}
.schematic-open-question p{margin:13px 0 0;color:#dcf4fd;font-size:16px;line-height:1.7}
.schematic-parts{border:1px solid #29455e;background:#0a1829;padding:30px 32px;border-radius:6px}
.schematic-parts ol{padding-left:25px;margin:22px 0 35px;counter-reset:part}
.schematic-parts li{font-size:13px;line-height:1.8;color:#b4cfe0;padding:7px 0 7px 5px;border-bottom:1px solid #203f56}
.schematic-parts li::marker{color:#6fdef4;font-family:var(--mono)}
.schematic-research-note{border-top:1px solid #39576d;padding-top:25px}
.schematic-research-note strong{color:#8fe4fd}
.schematic-research-note p{font-size:13px;line-height:1.8;color:#9bb8cb}
.schematic-related{padding-top:30px}
.schematic-related .split-head{margin-bottom:30px}
.stage-blueprint-link{display:inline-block;color:#8de4fa;font:700 11px var(--mono);letter-spacing:.045em;text-decoration:underline;text-underline-offset:5px;margin-top:9px}
@media(max-width:980px){.blueprint-feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.schematic-explanation{grid-template-columns:1fr}.schematic-parts{max-width:100%}}
@media(max-width:650px){.blueprint-grid,.blueprint-feature-grid{grid-template-columns:1fr;gap:17px}.blueprint-card-copy{padding:18px}.schematic-jumps a{padding:9px;font-size:11px}.schematic-detail-head{padding-top:45px}.schematic-detail-head h1{font-size:clamp(37px,10vw,59px)}.schematic-master figcaption{display:block}.schematic-master figcaption span{display:block;margin-top:6px}.schematic-image-disclaimer{display:block}.schematic-image-disclaimer strong{display:block;margin-bottom:9px}.schematic-parts{padding:22px}}
/* Keep the additional Atlas navigation item within compact desktop widths. */
@media(min-width:871px) and (max-width:1100px){.site-nav{gap:10px}.site-nav>a:not(.nav-cta){font-size:11px}.nav-cta{font-size:11px;padding:10px 11px}.brand>span{font-size:13px}}

/* v1.5 technical handbook, source-caveat review and progressive blueprint search */
.system-lead,.design-review-lead{padding-top:25px}
.system-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.system-card{display:flex;flex-direction:column;background:linear-gradient(150deg,#0b1b2f,#091525);border:1px solid #27435d;border-radius:7px;padding:30px;min-width:0}
.system-card-top{display:flex;align-items:center;justify-content:space-between;gap:20px}
.system-card .stage-number{font-size:32px}
.system-card h3{font-size:clamp(23px,2.4vw,32px);margin:20px 0 14px}
.system-card h3 a:hover{color:var(--cyan)}
.system-card p{font-size:14px;line-height:1.85;flex:1}
.system-card-actions{display:flex;gap:15px;flex-wrap:wrap;padding-top:10px}
.system-card-actions .text-link{font-size:12px}
.system-summary-table{border:1px solid #314e68;border-radius:8px;padding:45px;background:#0a1b2d;margin-bottom:50px}
.system-summary-table h2{font-size:clamp(25px,3vw,42px);max-width:750px}
.system-summary-table p{max-width:850px;line-height:1.9}
.system-links{display:flex;gap:15px;flex-wrap:wrap;margin-top:24px}
.system-head{padding-bottom:18px}
.system-detail-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(280px,.75fr);gap:clamp(30px,5vw,80px);align-items:start}
.system-read-block{padding:0 0 36px;margin-bottom:37px;border-bottom:1px solid #223c54}
.system-read-block h2{font-size:clamp(27px,3vw,42px);margin:13px 0 18px}
.system-read-block p,.system-flow-list{font-size:15px;line-height:1.95;color:#bbd0e2;margin-bottom:0}
.system-read-block.established{border-left:3px solid #6dcaed;padding-left:22px}
.system-unknown{background:#142332;padding:22px 26px 30px;border-left:3px solid #d0a267}
.system-unknown .eyebrow{color:#efc88d}
.system-flow-list{padding-left:27px}
.system-flow-list li{margin-bottom:14px;padding-left:7px}
.system-flow-list li::marker{color:#70d8f3;font-weight:800}
.system-source-label{font-size:12px;color:#91aabe;line-height:1.8}
.system-aside{position:sticky;top:105px;border:1px solid #27455e;background:#0b1a2a;padding:23px;border-radius:8px}
.system-aside h2{font-size:27px;margin:10px 0 25px}
.system-side-plate{display:block;margin-bottom:25px;border-bottom:1px solid #29455d;padding-bottom:17px;color:#d4effa;font-size:13px;font-weight:700}
.system-side-plate:hover{color:#65d8fa}
.system-side-plate img{display:block;width:100%;aspect-ratio:16/9;object-fit:cover;margin-bottom:10px;border-radius:5px;border:1px solid #375d79}
.system-aside-note{border:1px solid #3c5466;background:#101f30;padding:20px;font-size:12px;line-height:1.8;color:#bdd1dc}
.system-aside-note strong{color:#f1f9fc}
.system-aside-note p{font-size:12px;line-height:1.8;margin-top:9px}
.system-chapter-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;padding:30px 0 50px;border-top:1px solid #284258}
.system-chapter-nav>div:last-child{text-align:right}
.system-chapter-nav span,.system-chapter-nav a{display:block}
.system-chapter-nav a{font-size:16px;color:#b0edff;margin-top:9px}
.design-review-list{padding-top:44px}
.design-issue{scroll-margin-top:115px;display:grid;grid-template-columns:190px minmax(0,1fr);gap:35px;padding:42px 0;border-top:1px solid #294056}
.design-issue:last-child{border-bottom:1px solid #294056}
.design-issue-index .stage-number{display:block;font-size:33px}
.issue-status{font:700 10px var(--mono);color:#ecc18a;display:block;margin-top:12px;letter-spacing:.08em}
.design-issue h2{font-size:clamp(26px,3.2vw,41px);margin:13px 0 20px}
.design-issue p{color:#aec6d9;line-height:1.85;font-size:14px}
.issue-sub{border-left:2px solid #46728d;padding-left:17px;margin-top:23px}
.issue-sub strong{color:#d5edff;font-size:13px}
.issue-sub p{margin:5px 0 0}
.design-issue .issue-source{margin:20px 0 0;color:#93aac0;font-size:12px}
.issue-actions{display:flex;gap:22px;flex-wrap:wrap;margin-top:18px}
.issue-actions a{color:#80dfff;font-size:13px;font-weight:700}
.schematic-filter{margin-top:28px;background:#0c1e31;border:1px solid #35506a;border-radius:6px;padding:22px 26px}
.schematic-filter label{display:block;font-size:13px;color:#daedfa;font-weight:750;margin-bottom:12px}
.schematic-filter-controls{display:flex;gap:13px;align-items:center}
.schematic-filter input{min-width:0;flex:1;background:#061321;border:1px solid #3d5d77;color:white;border-radius:5px;padding:13px 16px}
.schematic-filter input::placeholder{color:#8da7bd}
.schematic-filter .btn{min-height:44px}
.schematic-filter-status{color:#a4bbcb;margin:10px 0 0;font-size:12px}
.blueprint-card[hidden],.schematic-group[hidden]{display:none!important}
@media(max-width:980px){.system-detail-grid{grid-template-columns:1fr}.system-aside{position:static;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.system-aside>.eyebrow,.system-aside h2,.system-aside-note{grid-column:1/-1}}
@media(max-width:700px){.system-grid{grid-template-columns:1fr}.system-card{padding:22px}.system-summary-table{padding:24px}.system-aside{display:block}.design-issue{grid-template-columns:1fr;gap:15px;padding:34px 0}.design-issue-index{display:flex;align-items:center;gap:20px}.design-issue-index .stage-number{font-size:25px}.issue-status{margin:0}.system-chapter-nav a{font-size:13px}.schematic-filter{padding:18px}.schematic-filter-controls{flex-wrap:wrap}.schematic-filter-controls input{flex-basis:100%}}
/* Give the expanded primary navigation a usable compact menu on mid-size desktop screens. */
@media(min-width:871px) and (max-width:1140px){
 .nav-toggle{display:flex}
 .site-nav{display:none;position:absolute;top:82px;left:0;right:0;flex-direction:column;align-items:stretch;padding:20px;background:#071320;border-bottom:1px solid #315071;gap:0}
 .site-nav.is-open{display:flex}
 .site-nav>a:not(.nav-cta){font-size:15px;padding:12px}
 .site-nav .nav-cta{justify-content:center;margin-top:12px}
}