:root{--bg-canvas:#0b0b0d;--bg-surface:#1b1b20;--bg-surface-hover:#25252c;--text-primary:#f4f4f5;--text-muted:#c0c4cc;--accent-primary:#dc2626;--accent-secondary:#c0c4cc;--border-subtle:#45454e;--ease-kinetic:cubic-bezier(.16,1,.3,1);--shadow-elevation:0 12px 32px -4px rgba(0,0,0,.25);--glow-accent:0 0 24px -4px var(--accent-primary);--glass-backdrop:blur(16px) saturate(180%)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg-canvas);color:var(--text-primary);font:1rem/1.75 system-ui,"Segoe UI",Roboto,sans-serif;overflow-wrap:anywhere;hyphens:auto}body::before{content:"";position:fixed;inset:18px;border:1px solid #606068;pointer-events:none;z-index:20}a{color:var(--text-primary);text-decoration-color:#8f939c;text-underline-offset:5px;text-decoration-thickness:1px;transition:text-decoration-thickness .2s,color .2s}a:hover{text-decoration-thickness:3px;color:#fff}button,input,textarea,select{font:inherit}button{cursor:pointer}button,a,input,textarea,select{touch-action:manipulation}:focus-visible{outline:3px solid #f5b8b8;outline-offset:5px}button:disabled{cursor:default;opacity:.6}[hidden]{display:none!important}.shell{max-width:1200px;margin:0 auto;padding:0 38px}.site-header{position:relative;padding-top:36px;border-bottom:1px solid var(--border-subtle)}.tagline{font-size:.72rem;text-transform:uppercase;letter-spacing:.16em;color:var(--text-muted);margin:0 0 8px}.header-row{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-bottom:23px}.brand{display:inline-flex;align-items:center;gap:10px;font-size:1.14rem;font-weight:800;letter-spacing:-.04em;text-decoration:none;white-space:nowrap}.brand-mark{display:grid;grid-template-columns:repeat(2,7px);gap:3px;transform:rotate(-5deg)}.brand-mark i{height:14px;background:var(--accent-primary);display:block}.brand-mark i:last-child{height:9px;background:var(--accent-secondary)}nav{display:flex;gap:17px;align-items:center}nav a{font-size:.8rem;text-decoration:none;white-space:nowrap}nav a:hover,nav a[aria-current="page"]{text-decoration:underline;text-underline-offset:7px;text-decoration-color:var(--accent-primary)}.menu-toggle{display:none;background:transparent;border:1px solid var(--border-subtle);border-radius:4px;color:var(--text-primary);font-size:1.65rem;width:43px;height:43px;line-height:1}.skip-link{position:absolute;top:-90px;left:30px;z-index:100;background:var(--bg-surface);padding:10px}.skip-link:focus{top:25px}main{padding-top:45px;padding-bottom:65px}h1,h2,h3{font-weight:800;letter-spacing:-.045em;line-height:1.12;hyphens:none}h1{font-size:clamp(2.2rem,5.4vw,4.8rem);max-width:18ch;margin:14px 0 23px}h2{font-size:clamp(1.5rem,3vw,2.25rem);margin:0 0 20px}h3{font-size:1.18rem;margin:0 0 12px}p{margin:0 0 20px}.eyebrow{color:var(--text-muted);font-size:.74rem;letter-spacing:.14em;text-transform:uppercase}.lead{font-size:1.17rem;color:var(--text-muted);max-width:66ch}.button{display:inline-flex;align-items:center;justify-content:center;background:var(--accent-primary);color:white;border:1px solid var(--accent-primary);padding:12px 20px;border-radius:4px;text-decoration:none;font-weight:700;transition:transform .3s var(--ease-kinetic),box-shadow .3s var(--ease-kinetic)}.button:hover{color:white;transform:translateY(-5px) scale(1.015);box-shadow:var(--shadow-elevation),var(--glow-accent)}.text-button{border:0;padding:5px 0;color:var(--text-primary);background:none;text-decoration:underline;text-underline-offset:5px}.text-button:hover{text-decoration-thickness:3px}.hero-intro{display:grid;grid-template-columns:1.3fr 1fr;gap:45px;align-items:end;margin-bottom:34px}.hero-visual{position:relative;margin:0 0 60px;min-height:375px}.hero-visual>img{display:block;width:100%;height:420px;object-fit:cover;border-radius:4px;filter:brightness(.72)}.hero-visual::before{content:"";position:absolute;inset:-8px 18px 8px -8px;border:1px solid #65656e;pointer-events:none}.fact-panel{position:absolute;bottom:25px;right:25px;background:rgba(27,27,32,.95);backdrop-filter:var(--glass-backdrop);border:1px solid #777780;border-radius:4px;padding:22px;max-width:365px;box-shadow:var(--shadow-elevation)}.fact-panel h2{font-size:1.1rem;letter-spacing:-.02em}.fact-panel ol{padding-left:22px;margin:0;color:var(--text-muted);font-size:.9rem}.fact-panel li+li{margin-top:10px}.section{padding:40px 0;border-top:1px solid var(--border-subtle)}.section-grid{display:grid;grid-template-columns:1fr 1.6fr;gap:46px}.index-row{display:grid;grid-template-columns:36px 1fr auto;align-items:start;gap:16px;padding:23px 0;border-top:1px solid var(--border-subtle)}.index-row:last-child{border-bottom:1px solid var(--border-subtle)}.index-row p{margin:7px 0 0;color:var(--text-muted)}.index-icon{font-size:.85rem;color:var(--text-muted);font-weight:800;line-height:2}.row-link{font-size:.9rem;white-space:nowrap}.strip{display:flex;flex-wrap:wrap;gap:10px 28px;padding:15px 0;border-top:1px solid var(--border-subtle);border-bottom:1px solid var(--border-subtle);font-size:.82rem;color:var(--text-muted);margin:25px 0}.strip 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var(--accent-primary);padding-top:18px;color:var(--text-muted);font-size:.9rem}.guide-aside ul{padding-left:18px}.guide-aside li{margin-bottom:13px}.guide-image{display:block;width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:4px}.narrow{max-width:74ch;margin:0 auto}.narrow h1{font-size:clamp(2.2rem,4.5vw,3.6rem)}.narrow h2{margin-top:38px}.tabs{margin:26px 0}.tab-list{display:flex;flex-wrap:wrap;gap:5px;border-bottom:1px solid var(--border-subtle);margin-bottom:22px}.tab-list button{border:0;border-bottom:3px solid transparent;background:none;color:var(--text-muted);padding:11px 15px;border-radius:4px 4px 0 0}.tab-list button[aria-selected="true"]{border-bottom-color:var(--accent-primary);color:var(--text-primary);background:var(--bg-surface)}.tab-list button:hover{background:var(--bg-surface-hover)}.tab-panel{padding:4px 0}.tab-panel p:last-child{margin-bottom:0}.comparison-row{display:grid;grid-template-columns:145px 1fr 1fr;gap:20px;padding:18px 0;border-bottom:1px solid var(--border-subtle)}.comparison-row span{color:var(--text-muted)}.comparison-row strong{font-size:.9rem}details{border-top:1px solid var(--border-subtle);padding:18px 0}details:last-child{border-bottom:1px solid var(--border-subtle)}summary{font-weight:700;cursor:pointer;padding-right:15px;line-height:1.5}details[open] summary{margin-bottom:16px}details p{max-width:70ch;color:var(--text-muted);margin-bottom:10px}.sources{padding-left:20px}.sources li{margin-bottom:12px}.glossary{margin:24px 0}.glossary dt{font-weight:800;border-top:1px solid var(--border-subtle);padding-top:17px}.glossary dd{margin:5px 0 18px;color:var(--text-muted)}label{display:block;font-weight:700;margin:17px 0 7px}input,textarea,select{width:100%;background:var(--bg-surface);border:1px solid #686872;border-radius:4px;padding:12px;color:var(--text-primary)}textarea{min-height:180px;resize:vertical}.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:0 24px}.form-grid>div{min-width:0}.help,.status{font-size:.88rem;color:var(--text-muted)}.status{min-height:1.75em;margin:14px 0}.actions{display:flex;gap:24px;align-items:center;flex-wrap:wrap;margin:22px 0}.review-output{white-space:pre-wrap;font:inherit;background:var(--bg-surface);border:1px solid var(--border-subtle);padding:20px;border-radius:4px;max-height:450px;overflow:auto}.site-footer{padding-top:15px;padding-bottom:40px;font-size:.85rem;color:var(--text-muted)}.footer-row{display:flex;flex-wrap:wrap;align-items:baseline;gap:10px 23px;padding:16px 0;border-top:1px solid var(--border-subtle)}.footer-row p{margin:0}.footer-row .copyright{margin-left:auto}.js .reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease-kinetic),transform .7s var(--ease-kinetic)}.js .reveal-visible{opacity:1;transform:translateY(0)}@keyframes gradientShift{0%,100%{background-position:0 50%}50%{background-position:100% 50%}}
@media(min-width:1025px){.guide-aside{position:sticky;top:25px}.hero-intro .lead{padding-bottom:7px}}
@media(min-width:769px) and (max-width:1024px){.shell{padding:0 34px}.header-row{gap:15px;flex-wrap:wrap}nav{gap:22px}.hero-intro{gap:25px}.guide-layout{grid-template-columns:minmax(0,1fr) 190px;gap:30px}}
@media(min-width:481px) and (max-width:768px){.shell{padding:0 28px}.hero-intro,.section-grid{grid-template-columns:1fr;gap:15px}.guide-layout{grid-template-columns:1fr}.guide-aside{margin-top:20px}.hero-visual>img{height:420px}.comparison-row{grid-template-columns:110px 1fr 1fr;gap:12px}}
@media(max-width:767px){body::before{inset:9px}.site-header{padding-top:25px}.header-row{flex-wrap:nowrap}.menu-toggle{display:block;flex-shrink:0}.site-nav{display:none;position:absolute;top:100%;left:20px;right:20px;z-index:15;background:var(--bg-surface);border:1px solid #74747d;border-radius:4px;box-shadow:var(--shadow-elevation);padding:12px 20px}.site-nav.is-open{display:flex;flex-direction:column;align-items:stretch;gap:0}.site-nav a{padding:12px 0;border-bottom:1px solid var(--border-subtle)}.site-nav a:last-child{border:0}.tagline{font-size:.64rem}.index-row{grid-template-columns:28px 1fr}.row-link{grid-column:2}.footer-row .copyright{margin-left:0}.form-grid{grid-template-columns:1fr}}
@media(max-width:480px){.shell{padding:0 24px}.brand{font-size:1rem}.brand-mark{grid-template-columns:repeat(2,6px)}.header-row{gap:10px}main{padding-top:28px}.hero-intro,.section-grid,.guide-layout{grid-template-columns:1fr;gap:20px}h1{font-size:2.5rem}.hero-visual{min-height:0;margin-bottom:35px}.hero-visual>img{height:245px}.fact-panel{position:relative;bottom:auto;right:auto;margin:-25px 10px 0;padding:20px;max-width:none}.section{padding:30px 0}.comparison-row{grid-template-columns:1fr;gap:8px}.diagram-cell{padding:9px;min-height:90px}.tab-list button{padding:10px;font-size:.9rem}.guide-aside{margin-top:20px}.strip{gap:8px 18px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}.js .reveal{opacity:1;transform:none}.button:hover{transform:none}}