:root{--bg:#071014;--bg2:#0b171c;--panel:#0d1c22;--panel2:#12262d;--text:#eef7f7;--muted:#9db3b7;--line:#234049;--accent:#65e6c4;--accent2:#ffd166;--max:1180px;--r:18px;--shadow:0 18px 50px rgba(0,0,0,.28)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 80% -10%,rgba(101,230,196,.12),transparent 32%),var(--bg);color:var(--text);font:16px/1.55 Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{color:inherit}.wrap{width:min(var(--max),calc(100% - 32px));margin:auto}.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:16px;z-index:99;background:#fff;color:#000;padding:10px;border-radius:8px}.site-header{position:sticky;top:0;z-index:20;background:rgba(7,16,20,.86);backdrop-filter:blur(18px);border-bottom:1px solid rgba(255,255,255,.07)}.nav{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:68px}.brand{display:flex;align-items:center;gap:10px;font-weight:800;text-decoration:none;letter-spacing:-.02em}.brand-mark{display:grid;place-items:center;width:34px;height:34px;border:1px solid var(--line);border-radius:50%;color:var(--accent);font-size:22px}.nav-links{display:flex;gap:18px;align-items:center}.nav-links a{text-decoration:none;color:var(--muted);font-weight:650}.nav-links a:hover,.nav-links a:focus{color:var(--text)}.menu-btn{display:none;background:none;border:1px solid var(--line);color:var(--text);border-radius:10px;padding:8px 10px}
.hero{padding:76px 0 36px}.hero-grid{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(280px,.55fr);gap:28px;align-items:center}.eyebrow{display:inline-flex;color:var(--accent);font-weight:750;font-size:.83rem;letter-spacing:.08em;text-transform:uppercase}.hero h1{font-size:clamp(2.7rem,7vw,6.6rem);line-height:.94;letter-spacing:-.065em;margin:14px 0 22px;max-width:950px}.hero p{max-width:760px;color:var(--muted);font-size:clamp(1.05rem,2vw,1.28rem);margin:0}.hero-card{position:relative;overflow:hidden;min-height:280px;background:linear-gradient(145deg,rgba(101,230,196,.1),rgba(255,209,102,.04));border:1px solid var(--line);border-radius:28px;padding:24px;box-shadow:var(--shadow)}.hero-card strong{font-size:1.25rem}.hero-card p{font-size:.98rem;margin-top:10px}.atom-orbit{position:absolute;right:-8px;bottom:-42px;font-size:150px;line-height:1;color:rgba(101,230,196,.12);transform:rotate(-12deg)}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}.trust-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}.trust-row span{border:1px solid var(--line);border-radius:999px;padding:6px 9px;color:var(--muted);font-size:.82rem}.btn{appearance:none;border:0;border-radius:12px;padding:12px 16px;font:inherit;font-weight:800;text-decoration:none;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;background:var(--accent);color:#042019}.btn.secondary{background:transparent;color:var(--text);border:1px solid var(--line)}
.section{padding:38px 0}.alt{background:linear-gradient(180deg,transparent,rgba(255,255,255,.018),transparent)}.section-head{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:20px}.section h2{font-size:clamp(1.7rem,3vw,2.7rem);letter-spacing:-.035em;margin:0}.section-head p{color:var(--muted);max-width:720px;margin:6px 0 0}.three{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.feature-card{display:block;text-decoration:none;border:1px solid var(--line);border-radius:18px;padding:21px;background:linear-gradient(180deg,rgba(255,255,255,.024),rgba(255,255,255,.01));transition:.15s}.feature-card:hover,.reactor-card:hover{transform:translateY(-2px);border-color:#39717b}.feature-card>span{font-size:.75rem;color:var(--accent);font-weight:800}.feature-card h3{margin:10px 0 6px}.feature-card p{color:var(--muted);margin:0}.text-link{color:var(--accent);font-weight:750;text-decoration:none;white-space:nowrap}
.tool-shell{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(320px,.95fr);gap:18px}.tool-panel,.result-panel{background:var(--panel);border:1px solid var(--line);border-radius:22px;padding:22px}.result-panel{background:linear-gradient(180deg,var(--panel2),var(--panel))}label{display:block;font-weight:700;margin-bottom:7px}.field{margin-bottom:16px}select,input[type=number],input[type=text],input[type=search]{width:100%;background:#071418;color:var(--text);border:1px solid var(--line);border-radius:11px;padding:12px 13px;font:inherit}.metrics{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.metric{padding:15px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.018)}.metric strong{display:block;font-size:1.5rem}.metric span{display:block;color:var(--muted);font-size:.85rem}.match{display:grid;grid-template-columns:1fr auto;gap:12px;padding:12px 0;border-top:1px solid var(--line)}.match:first-child{border-top:0}.match small{color:var(--muted)}.planner-results{margin-top:10px}.notice{border-left:3px solid var(--accent2);padding:12px 14px;background:rgba(255,209,102,.07);border-radius:9px;color:#e8dcc1}
.filters{display:grid;grid-template-columns:2fr 1fr 1fr;gap:10px;margin-bottom:14px}.reactor-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.reactor-card{border:1px solid var(--line);border-radius:16px;padding:17px;background:var(--panel);text-decoration:none;transition:.15s}.reactor-card .power{font-size:2rem;font-weight:850;color:var(--accent)}.reactor-card p{color:var(--muted);font-size:.93rem}.status{display:inline-block;border:1px solid var(--line);border-radius:999px;padding:4px 8px;font-size:.78rem;color:var(--muted)}.hidden{display:none!important}
.compare-controls{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;align-items:end;margin-bottom:16px}.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:16px}table{border-collapse:collapse;width:100%;min-width:760px;background:var(--panel)}th,td{text-align:left;padding:13px 14px;border-bottom:1px solid var(--line);vertical-align:top}th{font-size:.78rem;text-transform:uppercase;color:var(--muted)}.compare-table td:first-child,.compare-table th:first-child{position:sticky;left:0;background:#0d1c22;z-index:1}
.article{max-width:850px}.article h1{font-size:clamp(2.4rem,6vw,4.8rem);line-height:1;letter-spacing:-.05em;margin:22px 0}.article h2{margin-top:40px;font-size:1.7rem}.article p,.article li{color:#c2d2d5}.article a:not(.btn){color:var(--accent)}.source-list{padding-left:1.2rem}.source-list li{margin:10px 0}.specs{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:22px 0}.spec{border:1px solid var(--line);border-radius:14px;padding:14px;background:var(--panel)}.spec b{display:block;font-size:1.25rem}.spec span{color:var(--muted);font-size:.84rem}.tiny{font-size:.84rem;color:var(--muted)}
.footer{margin-top:60px;border-top:1px solid var(--line);padding:34px 0 50px;color:var(--muted)}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:24px}.footer a{color:var(--muted);text-decoration:none}.footer-links{display:grid;gap:7px}.footer strong,.footer .brand{color:var(--text)}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr}.hero-card{min-height:190px}.three,.reactor-grid{grid-template-columns:1fr 1fr}.tool-shell{grid-template-columns:1fr}.specs{grid-template-columns:1fr 1fr}.nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:#071014;border-bottom:1px solid var(--line);padding:16px}.nav-links.open{display:grid}.menu-btn{display:block}.filters{grid-template-columns:1fr 1fr}.filters input{grid-column:1/-1}}
@media(max-width:620px){.wrap{width:min(100% - 22px,var(--max))}.hero{padding-top:48px}.three,.reactor-grid,.compare-controls,.footer-grid{grid-template-columns:1fr}.hero-card{min-height:170px}.hero h1{font-size:clamp(2.5rem,14vw,4rem)}.metrics,.specs{grid-template-columns:1fr}.section-head{align-items:flex-start;flex-direction:column}.filters{grid-template-columns:1fr}.filters input{grid-column:auto}.tool-panel,.result-panel{padding:16px}}

/* Reader / explainer layer */
.learn-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.learn-card{display:block;text-decoration:none;border:1px solid var(--line);border-radius:20px;padding:22px;background:linear-gradient(160deg,rgba(101,230,196,.045),rgba(255,255,255,.012));min-height:180px}.learn-card:hover{border-color:#39717b;transform:translateY(-2px)}.learn-card .learn-icon{font-size:2rem;display:block;margin-bottom:14px}.learn-card h3{margin:0 0 8px;font-size:1.35rem}.learn-card p{margin:0;color:var(--muted)}
.explainer{border:1px solid var(--line);border-radius:24px;padding:22px;background:linear-gradient(180deg,var(--panel2),var(--panel));box-shadow:var(--shadow)}.flow-diagram{display:grid;grid-template-columns:repeat(5,minmax(120px,1fr));gap:10px;align-items:stretch}.flow-step{position:relative;border:1px solid var(--line);border-radius:16px;padding:18px 14px;background:#0a171c;text-align:center}.flow-step b{display:block;margin:7px 0 4px}.flow-step span{font-size:1.75rem}.flow-step small{color:var(--muted)}.flow-step:not(:last-child)::after{content:"→";position:absolute;right:-16px;top:50%;transform:translateY(-50%);z-index:2;color:var(--accent);font-weight:900;font-size:1.2rem}.cooling-loop{margin-top:12px;border:1px dashed #31515a;border-radius:14px;padding:12px 14px;color:var(--muted);text-align:center}
.steps{counter-reset:readerstep;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.step-card{counter-increment:readerstep;border:1px solid var(--line);border-radius:16px;padding:18px;background:var(--panel)}.step-card::before{content:counter(readerstep);display:grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--accent);color:#042019;font-weight:900;margin-bottom:12px}.step-card h3{margin:0 0 6px}.step-card p{margin:0;color:var(--muted)}
.scale-visual{display:grid;gap:14px}.scale-item{display:grid;grid-template-columns:150px 1fr 120px;gap:14px;align-items:center}.scale-label strong{display:block}.scale-label small{color:var(--muted)}.scale-track{height:18px;border-radius:999px;background:#071418;border:1px solid var(--line);overflow:hidden}.scale-fill{height:100%;min-width:4px;border-radius:999px;background:linear-gradient(90deg,var(--accent),#9cf3dd)}.scale-value{text-align:right;font-weight:800}.scale-note{color:var(--muted);font-size:.88rem}
.use-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.use-btn{appearance:none;border:1px solid var(--line);border-radius:14px;padding:14px;background:var(--panel);color:var(--text);text-align:left;font:inherit;cursor:pointer}.use-btn:hover,.use-btn[aria-pressed="true"]{border-color:var(--accent);background:rgba(101,230,196,.07)}.use-btn strong{display:block;margin-bottom:3px}.use-btn span{color:var(--muted);font-size:.86rem}.use-result{margin-top:14px;display:grid;grid-template-columns:1fr 1fr;gap:12px}.use-result .metric{min-height:96px}.use-result .full{grid-column:1/-1}
.reactor-scale-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.scale-card{border:1px solid var(--line);border-radius:20px;padding:20px;background:var(--panel)}.scale-card .big-number{font-size:clamp(2rem,5vw,3.6rem);font-weight:900;letter-spacing:-.05em;color:var(--accent)}.scale-card ul{padding-left:18px;color:var(--muted)}.scenario-row{display:flex;flex-wrap:wrap;gap:10px}.scenario-link{border:1px solid var(--line);border-radius:999px;padding:9px 13px;text-decoration:none;color:var(--text);font-weight:700}.scenario-link:hover{border-color:var(--accent);color:var(--accent)}
.safety-layers{display:grid;gap:10px;max-width:820px}.safety-layer{border:1px solid var(--line);border-radius:18px;padding:16px 18px;background:var(--panel);display:grid;grid-template-columns:44px 1fr;gap:12px;align-items:start}.safety-layer .n{display:grid;place-items:center;width:40px;height:40px;border-radius:50%;background:rgba(101,230,196,.12);border:1px solid var(--accent);color:var(--accent);font-weight:900}.safety-layer h3{margin:0 0 4px}.safety-layer p{margin:0;color:var(--muted)}
.simple-callout{border:1px solid var(--line);border-radius:18px;padding:18px;background:rgba(101,230,196,.04)}.simple-callout strong{color:var(--accent)}.source-box{margin-top:20px;padding:14px 16px;border-radius:14px;background:#08161a;border:1px solid var(--line)}.source-box p{margin:0 0 8px}.source-box a{color:var(--accent)}
@media(max-width:900px){.flow-diagram{grid-template-columns:1fr 1fr}.flow-step:not(:last-child)::after{display:none}.steps{grid-template-columns:1fr 1fr}.use-grid{grid-template-columns:1fr 1fr}.reactor-scale-cards{grid-template-columns:1fr}.scale-item{grid-template-columns:120px 1fr 90px}}
@media(max-width:620px){.learn-grid,.steps,.use-grid,.use-result{grid-template-columns:1fr}.flow-diagram{grid-template-columns:1fr}.scale-item{grid-template-columns:1fr}.scale-value{text-align:left}.use-result .full{grid-column:auto}}

/* Interactive reactor scale explorer */
.scale-explorer{border:1px solid var(--line);border-radius:26px;padding:24px;background:linear-gradient(155deg,rgba(101,230,196,.07),rgba(255,255,255,.012));box-shadow:var(--shadow)}
.scale-explorer-head{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:22px}.scale-explorer-head h2{margin:4px 0 6px}.scale-explorer-head p{margin:0;color:var(--muted);max-width:720px}.scale-live{min-width:170px;text-align:right}.scale-live strong{display:block;font-size:clamp(2rem,5vw,3.5rem);line-height:1;letter-spacing:-.05em;color:var(--accent)}.scale-live span{display:block;margin-top:6px;color:var(--muted);font-weight:700}
.scale-slider{width:100%;accent-color:var(--accent);cursor:pointer;margin:5px 0 0}.scale-axis{display:flex;justify-content:space-between;color:var(--muted);font-size:.78rem;margin-top:2px}
.scale-markers{position:relative;height:36px;margin:2px 8px 2px}.scale-markers::before{content:"";position:absolute;left:0;right:0;top:17px;height:1px;background:var(--line)}.scale-marker{position:absolute;top:7px;transform:translateX(-50%);appearance:none;border:0;background:transparent;padding:0;width:20px;height:20px;cursor:pointer}.scale-marker span{display:block;width:9px;height:9px;margin:5px auto;border-radius:50%;background:#42636a;border:1px solid #6a929a;transition:.15s}.scale-marker:hover span,.scale-marker:focus-visible span,.scale-marker.active span{width:15px;height:15px;margin:2px auto;background:var(--accent);border-color:var(--accent);box-shadow:0 0 0 5px rgba(101,230,196,.1)}
.scale-output-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:10px;margin-top:18px}.scale-output-grid .metric{min-height:118px}.scale-output-grid small{display:block;color:var(--muted);font-size:.78rem;margin-top:5px}.scale-error{border-color:#8a624b}
@media(max-width:900px){.scale-explorer-head{align-items:flex-start;flex-direction:column}.scale-live{text-align:left}.scale-output-grid{grid-template-columns:1fr 1fr}.scale-output-grid .metric:first-child{grid-column:1/-1}}
@media(max-width:620px){.scale-explorer{padding:18px}.scale-output-grid{grid-template-columns:1fr}.scale-output-grid .metric:first-child{grid-column:auto}.scale-axis{font-size:.68rem}.scale-live strong{font-size:2.4rem}}

/* Nuclear Records & Oddities */
.record-ladder{border:1px solid var(--line);border-radius:24px;padding:22px;background:linear-gradient(160deg,rgba(255,209,102,.06),rgba(101,230,196,.035));box-shadow:var(--shadow);margin-bottom:22px}.record-ladder-head h2{margin:4px 0 7px}.record-ladder-head p{margin:0;color:var(--muted);max-width:860px}.record-rail{position:relative;height:54px;margin:26px 10px 2px}.record-rail::before{content:"";position:absolute;left:0;right:0;top:25px;height:2px;background:linear-gradient(90deg,#31515a,var(--accent))}.record-pin{position:absolute;top:14px;transform:translateX(-50%);appearance:none;border:0;background:transparent;width:24px;height:24px;padding:0;cursor:pointer}.record-pin span{display:block;width:10px;height:10px;margin:7px;border-radius:50%;background:#46666d;border:1px solid #77969c;transition:.15s}.record-pin:hover span,.record-pin:focus-visible span,.record-pin.active span{width:17px;height:17px;margin:3.5px;background:var(--accent2);border-color:var(--accent2);box-shadow:0 0 0 6px rgba(255,209,102,.12)}.record-axis{display:flex;justify-content:space-between;color:var(--muted);font-size:.72rem}.record-selected{display:flex;justify-content:space-between;gap:18px;align-items:center;margin-top:18px;padding:16px;border:1px solid var(--line);border-radius:16px;background:rgba(0,0,0,.12)}.record-selected strong{display:block;font-size:1.2rem}.record-selected p{margin:4px 0 0;color:var(--muted)}
.record-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.record-card{overflow:hidden;border:1px solid var(--line);border-radius:22px;background:var(--panel);scroll-margin-top:88px}.record-art{height:170px;display:grid;place-items:center;background:radial-gradient(circle at 70% 20%,rgba(101,230,196,.12),transparent 42%),linear-gradient(180deg,#0d2127,#09161a);border-bottom:1px solid var(--line)}.record-art svg{width:min(88%,360px);height:140px}.sketch-line{fill:none;stroke:#c8d8da;stroke-width:3;stroke-linecap:round;stroke-linejoin:round}.sketch-dash{fill:none;stroke:#42636a;stroke-width:2;stroke-dasharray:6 6}.sketch-dot{fill:var(--accent2)}.sketch-accent{fill:none;stroke:var(--accent);stroke-width:3;stroke-linecap:round;stroke-linejoin:round}.sketch-fill{fill:rgba(101,230,196,.08);stroke:none}.record-body{padding:20px}.record-tag{display:inline-block;border:1px solid rgba(255,209,102,.4);background:rgba(255,209,102,.07);color:var(--accent2);border-radius:999px;padding:4px 8px;font-size:.73rem;font-weight:900;letter-spacing:.05em}.record-body h2{font-size:1.45rem;margin:10px 0 8px}.record-body>p{color:var(--muted);margin:0 0 16px}.record-facts{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:14px}.record-facts div{padding:10px;border:1px solid var(--line);border-radius:12px;background:rgba(255,255,255,.015)}.record-facts span{display:block;color:var(--muted);font-size:.72rem;text-transform:uppercase;letter-spacing:.06em}.record-facts strong{display:block;margin-top:3px;font-size:.9rem}
@media(max-width:820px){.record-grid{grid-template-columns:1fr}.record-selected{align-items:flex-start;flex-direction:column}.record-axis span:nth-child(2),.record-axis span:nth-child(4){display:none}}
@media(max-width:520px){.record-art{height:145px}.record-art svg{height:118px}.record-facts{grid-template-columns:1fr}.record-ladder{padding:16px}.record-axis{font-size:.64rem}}

/* Learn context navigation */
.context-bar{border-bottom:1px solid rgba(255,255,255,.055);background:rgba(255,255,255,.012)}
.breadcrumbs{display:flex;align-items:center;gap:9px;min-height:42px;color:var(--muted);font-size:.84rem;white-space:nowrap;overflow:hidden}
.breadcrumbs a{color:var(--accent);font-weight:800;text-decoration:none}
.breadcrumbs a:hover,.breadcrumbs a:focus{text-decoration:underline}
.breadcrumbs span[aria-current="page"]{overflow:hidden;text-overflow:ellipsis}
.reader-nav-section{padding:28px 0 4px}
.reader-nav{display:grid;grid-template-columns:1fr 1.35fr;gap:12px}
.reader-back,.reader-next{display:flex;align-items:center;gap:12px;min-height:78px;padding:14px 16px;border:1px solid var(--line);border-radius:16px;background:var(--panel);text-decoration:none;transition:.15s}
.reader-next{justify-content:space-between;background:linear-gradient(145deg,rgba(101,230,196,.06),var(--panel))}
.reader-back:hover,.reader-next:hover,.reader-back:focus-visible,.reader-next:focus-visible{border-color:var(--accent);transform:translateY(-1px)}
.reader-back>span:first-child,.reader-next>span:last-child{color:var(--accent);font-size:1.35rem;font-weight:900}
.reader-nav small{display:block;color:var(--muted);font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;margin-bottom:2px}
.reader-nav strong{display:block;color:var(--text)}
@media(max-width:620px){.context-bar{position:relative}.breadcrumbs{min-height:38px;font-size:.78rem}.reader-nav{grid-template-columns:1fr}.reader-back,.reader-next{min-height:68px}.reader-next{order:-1}}

/* CTA contrast + narrow-layout hardening */
.btn{transition:background-color .15s,border-color .15s,color .15s,transform .15s}
.btn:hover{background:#8ff0d6;color:#042019;transform:translateY(-1px)}
.btn:focus-visible{outline:3px solid rgba(101,230,196,.32);outline-offset:3px}
.btn.secondary:hover{background:rgba(101,230,196,.07);border-color:#4d7f87;color:var(--text)}
.article .hero-actions .btn{min-width:0;max-width:100%;text-align:center}
.record-context-section{padding-bottom:26px}
.record-purpose-section{padding-top:26px}
@media(max-width:700px){
 .article .hero-actions{display:grid;grid-template-columns:1fr;width:100%}
 .article .hero-actions .btn{width:100%}
}

/* Thin-page enrichment: category comparisons, tracker, detail context and trust pages */
.category-summary,.phase-grid,.detail-context,.source-summary{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:0 0 22px}
.category-summary .metric,.phase-grid .metric,.detail-context .metric,.source-summary .metric{min-height:104px}
.detail-context .metric small{display:block;color:var(--muted);font-size:.76rem;margin-top:5px}
.category-guide{margin:18px 0 28px;padding:22px;border:1px solid var(--line);border-radius:20px;background:linear-gradient(155deg,rgba(101,230,196,.055),rgba(255,255,255,.012))}
.category-guide h2{margin:5px 0 8px}.category-guide>div>p{color:var(--muted);max-width:850px}
.category-guide .three{margin-top:16px}.category-guide .feature-card{min-height:138px}.category-guide .feature-card p{font-size:.93rem}
.category-compare-head,.category-card-head,.calculator-head{margin-top:34px}
.category-table td:nth-child(2),.category-table th:nth-child(2){white-space:nowrap}
.phase-pill{display:inline-block;border:1px solid rgba(101,230,196,.32);background:rgba(101,230,196,.07);color:#9cf3dd;border-radius:999px;padding:3px 7px;font-size:.72rem;font-weight:800;line-height:1.35}
.tracker-controls{display:grid;grid-template-columns:1fr 1fr minmax(150px,.6fr);gap:10px;align-items:end;margin:20px 0 8px}
.tracker-count{border:1px solid var(--line);border-radius:14px;padding:11px 13px;background:var(--panel);min-height:69px}.tracker-count span{display:block;color:var(--muted);font-size:.78rem}.tracker-count strong{font-size:1.5rem}
.tracker-table tr[hidden]{display:none}
.calculator-chooser{margin-top:10px}.calculator-examples{margin-top:8px}
.detail-context{grid-template-columns:repeat(3,minmax(0,1fr));margin-top:2px}.detail-assumption{margin-top:-8px;margin-bottom:28px}
.attribute-table td:first-child{width:33%}
.neighbor-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:14px 0 24px}
.neighbor-card{display:flex;flex-direction:column;gap:6px;padding:16px;border:1px solid var(--line);border-radius:16px;background:var(--panel);text-decoration:none;transition:.15s}
.neighbor-card:hover,.neighbor-card:focus-visible{border-color:var(--accent);transform:translateY(-1px)}
.neighbor-card strong{font-size:1.05rem}.neighbor-card>span:not(.status),.neighbor-card small{color:var(--muted)}
.source-summary{grid-template-columns:repeat(3,minmax(0,1fr))}
.source-rules{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:12px 0 28px}.source-rules>div{border:1px solid var(--line);border-radius:15px;padding:16px;background:var(--panel)}.source-rules p{margin:6px 0 0;color:var(--muted)}
.utility-page h2{margin-top:34px}.utility-page h2:first-child{margin-top:0}.utility-page li{margin:7px 0}.utility-updated{margin-top:34px;padding-top:14px;border-top:1px solid var(--line)}
@media(max-width:900px){
 .category-summary,.phase-grid{grid-template-columns:1fr 1fr}
 .detail-context,.source-summary,.source-rules,.neighbor-grid{grid-template-columns:1fr 1fr}
 .tracker-controls{grid-template-columns:1fr 1fr}.tracker-count{grid-column:1/-1}
}
@media(max-width:620px){
 .category-summary,.phase-grid,.detail-context,.source-summary,.source-rules,.neighbor-grid,.tracker-controls{grid-template-columns:1fr}
 .tracker-count{grid-column:auto}
 .category-guide{padding:17px}.attribute-table td:first-child{width:auto}
}