@charset "UTF-8";
:root{color-scheme:dark;--bg:#0c1423;--panel:#13202f;--ink:#edf3f4;--muted:#a7b6c3;--line:#ffffff17;--mint:#b5efd1;--blue:#94cfff;--gold:#f1cf97}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:radial-gradient(ellipse at 85% 0,#22473f55,transparent 42%),var(--bg);color:var(--ink);font:16px/1.9 system-ui,-apple-system,"Segoe UI",sans-serif}a{color:var(--mint);text-underline-offset:4px}button{font:inherit}a:focus-visible,button:focus-visible{outline:3px solid var(--mint);outline-offset:5px}a,button{-webkit-tap-highlight-color:transparent}.wrap{max-width:1160px;padding:0 40px;margin:auto}.skip{position:fixed;top:-100px;padding:10px;background:var(--mint);color:var(--bg);z-index:20}.skip:focus{top:8px}.site-header{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:28px 0;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:11px;color:var(--ink);text-decoration:none;font-size:12px;line-height:1.4;font-weight:700;flex-shrink:0}.languages{display:flex;gap:4px;flex-wrap:wrap;justify-content:flex-end}.languages a{font-size:12px;line-height:1.6;text-decoration:none;color:var(--muted);padding:8px 10px;border:1px solid transparent;border-radius:20px}.languages a[aria-current]{background:#b5efd114;border-color:#b5efd133;color:var(--mint)}.eyebrow,.section-number{color:var(--mint);font-size:12px;font-weight:700;letter-spacing:.08em}.hub-hero{display:grid;grid-template-columns:1.2fr 1fr;gap:64px;padding:72px 0;align-items:center}h1{font-size:clamp(34px,4.2vw,57px);line-height:1.4;letter-spacing:-.04em;margin:16px 0 24px;text-wrap:balance}.lead{font-size:17px;color:var(--muted);line-height:1.9;max-width:58ch}.button{display:inline-flex;justify-content:center;align-items:center;gap:10px;min-height:48px;border:1px solid #b5efd155;border-radius:10px;padding:11px 19px;background:var(--mint);color:#10251d;text-decoration:none;font-size:14px;font-weight:700;cursor:pointer}.button.secondary{background:transparent;color:var(--mint)}.hub-hero .button{margin-top:16px}.building{padding:20px 20px 0;border:1px solid #b5efd12b;border-radius:28px 28px 8px 8px;background:linear-gradient(155deg,#b5efd114,#94cfff08)}.building-floor{display:flex;align-items:center;gap:18px;padding:20px 12px;border-bottom:1px solid var(--line);text-decoration:none;color:var(--ink)}.building-floor>span{font-size:32px;line-height:1;font-weight:750;color:var(--floor)}.building-floor strong{display:block;font-size:17px}.building-floor small{display:block;font-size:12px;color:var(--muted);line-height:1.6;margin-top:4px}.building-floor b{margin-left:auto;color:var(--floor)}.building>p{font-size:10px;letter-spacing:.15em;color:var(--muted);text-align:center;margin:14px}.floor-1{--floor:var(--mint)}.floor-2{--floor:var(--blue)}.floor-3{--floor:var(--gold)}.primer{display:flex;justify-content:space-between;align-items:center;gap:30px;padding:26px 30px;border:1px solid var(--line);border-radius:16px;background:#b5efd108}.primer .eyebrow{margin:0}.primer h2{font-size:22px;margin:6px 0}.primer p:last-child{font-size:14px;margin:0;color:var(--muted)}.primer .button{flex-shrink:0}.floor{padding:60px 0;border-bottom:1px solid var(--line)}.floor-heading{display:flex;align-items:center;gap:22px;margin-bottom:28px}.floor-number{font-size:48px;font-weight:750;color:var(--floor);line-height:1.3}.floor-heading h2{font-size:27px;line-height:1.4;margin:0 0 7px}.floor-heading p{color:var(--muted);font-size:14px;margin:0}.topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.topic-card{display:flex;flex-direction:column;min-width:0;padding:24px;border:1px solid var(--line);border-radius:18px;text-decoration:none;background:var(--panel);color:var(--ink);transition:transform .15s,border-color .15s}.topic-card:hover{transform:translateY(-3px);border-color:var(--floor)}.card-top{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:11px}.card-top span:first-child{font-size:27px}.topic-card h3{font-size:21px;line-height:1.6;margin:18px 0 12px;text-wrap:balance}.topic-card p{color:var(--muted);font-size:14px;line-height:1.8;margin:0 0 24px}.read{display:flex;justify-content:space-between;margin-top:auto;font-size:13px;font-weight:700;color:var(--floor)}.tool-links{display:flex;gap:14px;flex-wrap:wrap;padding:44px 0;align-items:center}.tool-links h2{flex-basis:100%;font-size:24px;line-height:1.6;margin:0 0 8px}footer{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;padding:28px 0 38px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}.breadcrumb{display:flex;gap:10px;flex-wrap:wrap;font-size:12px;color:var(--muted);margin:26px 0}.article{max-width:790px;margin:0 auto}.article-hero{padding:25px 0 24px}.article-hero h1{font-size:clamp(30px,3.7vw,46px)}.answer{padding:24px 28px;border-left:3px solid var(--mint);border-radius:0 14px 14px 0;background:#b5efd10a;margin:0 0 34px}.answer>span{font-size:12px;font-weight:700;color:var(--mint)}.answer p{margin:10px 0 0;font-size:17px}.article-body section{padding:28px 0;border-bottom:1px solid var(--line)}.article-body .section-number{margin:0}.article-body h2{font-size:25px;line-height:1.6;margin:8px 0 18px;text-wrap:balance}.article-body p{color:var(--muted);margin:0;line-height:2.1}.checklist{background:var(--panel);padding:26px 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figcaption,.caption{font-size:12px;color:var(--muted);line-height:1.8}.watt-choices{display:flex;gap:10px;flex-wrap:wrap;margin:20px 0}.watt-choices button{padding:8px 18px;min-height:44px;border:1px solid var(--line);border-radius:9px;background:var(--panel);color:var(--muted);cursor:pointer}.watt-choices button[aria-pressed=true]{background:var(--mint);color:#10251d}.power-path,.role-path{display:flex;align-items:center;gap:16px;justify-content:space-between;margin:28px 0}.power-path>div,.role-path>div{min-width:0;flex:1}.power-path small{display:block;color:var(--muted);font-size:11px}.power-path strong{font-size:25px;line-height:1.5;color:var(--mint);display:block}.role-path h3{font-size:18px;line-height:1.5;margin:0 0 8px}.role-path p{font-size:12px;color:var(--mint);margin:0}.role-path>strong{font-size:30px}.protocol-steps{display:grid;grid-template-columns:1fr 1fr;gap:16px;list-style:none;margin:22px 0 0;padding:0}.protocol-steps li{display:flex;gap:12px;padding:14px;background:var(--panel);border-radius:10px;min-width:0}.protocol-steps li>span{color:var(--mint);font-weight:750}.protocol-steps li div{min-width:0}.protocol-steps b{display:block;font-size:14px}.protocol-steps code{display:block;overflow-wrap:anywhere;font:11px/1.6 ui-monospace,monospace;color:var(--blue);margin-top:7px}.history-line{list-style:none;padding:0 0 0 18px;margin:0;border-left:2px solid var(--gold)}.history-line li{font-size:15px;padding:12px 0;color:var(--ink)}[hidden]{display:none!important}@media(max-width:800px){.wrap{padding:0 24px}.hub-hero{gap:30px;padding:44px 0;grid-template-columns:1fr}.building{max-width:540px;width:100%}.topic-grid{grid-template-columns:1fr}.topic-card{padding:23px}.topic-card h3{margin-top:12px}.topic-card p{margin-bottom:16px}.primer{align-items:start;flex-direction:column;gap:18px}.floor{padding:42px 0}.floor-heading h2{font-size:24px}.site-header{align-items:flex-start;gap:14px}.languages{max-width:245px}.languages a{font-size:10px;padding:6px 8px}.brand{font-size:10px;gap:7px}.brand img{width:28px;height:28px}.article-hero{padding-top:12px}.answer,.illustration,.checklist{padding:20px}.article-body h2{font-size:22px}.protocol-steps{grid-template-columns:1fr}.power-path{gap:9px}.power-path strong{font-size:19px}.role-path{gap:10px}.role-path h3{font-size:15px}.role-path p{font-size:11px}.article-next{flex-direction:column}.article-next>a:last-child{max-width:none;text-align:left}.tool-links .button{width:100%}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.topic-card{transition:none}.topic-card:hover{transform:none}}