:root{
  --black:#050505;--surface:#0c0c0c;--surface-raised:#111;--white:#fff;--grey:#a3a3a3;--grey-dim:#7a7a7a;--accent:#22d3ee;
  --positive:#86efac;--negative:#fca5a5;--caution:#fcd34d;--line:rgba(255,255,255,.16);--line-faint:rgba(255,255,255,.07);
  --font-display:'Space Grotesk',system-ui,sans-serif;--font-mono:'JetBrains Mono',ui-monospace,monospace;
  --dur-fast:150ms;--ease-out:cubic-bezier(.16,1,.3,1)
}
*{box-sizing:border-box;border-radius:0!important}
html{scroll-behavior:smooth}
body{margin:0;background:var(--black);color:var(--white);font-family:var(--font-display);min-height:100vh;padding:48px;line-height:1.6}
a{color:inherit}.wrap{max-width:1100px;margin:0 auto}
.skip{position:absolute;left:-9999px;top:8px;background:var(--white);color:var(--black);padding:8px 12px;z-index:20}.skip:focus{left:8px}
.back{display:inline-block;margin-bottom:40px;color:var(--grey);font:500 12px/1 var(--font-mono);letter-spacing:.08em;text-decoration:none;text-transform:uppercase}.back:hover{color:var(--white)}
.demo-label,.guide-label{display:flex;align-items:center;gap:16px;margin-bottom:48px;color:var(--grey);font:12px/1.4 var(--font-mono);letter-spacing:.08em;text-transform:uppercase}.demo-label::after,.guide-label::after{content:"";flex:1;height:1px;background:var(--line-faint)}.demo-label b,.guide-label b{color:var(--white);font-weight:500}
.plus-frame{position:relative;max-width:900px;margin:0 auto;padding:40px}.pf-line{position:absolute;display:block;background:var(--line)}.pf-top{top:0;left:0;width:100%;height:1px;transform-origin:left center}.pf-bottom{bottom:0;left:0;width:100%;height:1px;transform-origin:left center}.pf-left{top:0;left:0;width:1px;height:100%;transform-origin:center top}.pf-right{top:0;right:0;width:1px;height:100%;transform-origin:center top}.pf-plus{position:absolute;padding:1px 2px;z-index:2;background:var(--black);color:var(--white);font:12px/1 var(--font-mono)}.pf-tl{top:-7px;left:-5px}.pf-tr{top:-7px;right:-5px}.pf-bl{bottom:-7px;left:-5px}.pf-br{right:-5px;bottom:-7px}
.hero-grid{display:grid;grid-template-columns:minmax(250px,.9fr) 1.1fr;gap:40px;align-items:center}.structure{margin:0}.structure-panel{display:grid;place-items:center;min-height:280px;padding:16px;background:#fff;border:1px solid var(--line)}.structure img{display:block;width:100%;height:280px;object-fit:contain}.structure figcaption{margin-top:10px;color:var(--grey-dim);font:11px/1.5 var(--font-mono)}
.k,.eyebrow{display:block;margin-bottom:16px;color:var(--grey);font:12px/1.5 var(--font-mono);letter-spacing:.08em;text-transform:uppercase}.identity h1{margin:0;font-size:clamp(2rem,6vw,4.5rem);font-weight:500;letter-spacing:-.045em;line-height:.95}.chemical-name{max-width:52ch;margin:20px 0 0;color:var(--grey);font-size:.9rem;overflow-wrap:anywhere}.status-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}.pill{border:1px solid var(--line);padding:6px 9px;color:var(--grey);font:10px/1 var(--font-mono);letter-spacing:.06em;text-transform:uppercase}.pill.grade{border-color:rgba(252,211,77,.45);color:var(--caution)}
.replay{display:block;width:fit-content;margin:32px auto 0;padding:8px 16px;background:none;border:1px solid var(--line);color:var(--white);cursor:pointer;font:12px/1 var(--font-mono);letter-spacing:.08em;text-transform:uppercase;transition:border-color var(--dur-fast) var(--ease-out)}.replay:hover{border-color:var(--white)}.replay:focus-visible,.back:focus-visible,a:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.evidence-callout{max-width:900px;margin:56px auto 0;padding:20px 24px;border-left:2px solid var(--caution);background:rgba(252,211,77,.05)}.evidence-callout b{display:block;margin-bottom:6px;color:var(--caution);font:11px/1.4 var(--font-mono);letter-spacing:.08em;text-transform:uppercase}.evidence-callout p{margin:0;color:var(--grey);font-size:.92rem}
.guide{max-width:1100px;margin:96px auto 0;border-top:1px solid var(--line);padding-top:32px}.section-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--line-faint);border:1px solid var(--line-faint)}.research-card{min-width:0;padding:30px;background:var(--surface)}.research-card.wide{grid-column:1/-1}.research-card h2,.method h2,.sources h2{margin:0 0 14px;color:var(--grey);font:500 12px/1.4 var(--font-mono);letter-spacing:.08em;text-transform:uppercase}.research-card p{margin:0;color:var(--grey);font-size:.95rem}.research-card p+p{margin-top:14px}.research-card strong{color:var(--white);font-weight:500}.research-card.positive h2{color:var(--positive)}.research-card.negative h2{color:var(--negative)}.research-card.safety h2{color:var(--caution)}
.spec{display:grid;grid-template-columns:9rem 1fr;gap:10px 24px;margin:0}.spec dt{color:var(--grey);font:11px/1.5 var(--font-mono);letter-spacing:.06em;text-transform:uppercase}.spec dd{margin:0;color:var(--white);font:12px/1.55 var(--font-mono);overflow-wrap:anywhere}
.cite{color:var(--accent);font:500 10px/1 var(--font-mono);text-decoration:none;vertical-align:super}.cite:hover{text-decoration:underline}
.method,.sources{max-width:1100px;margin:64px auto 0;padding-top:32px;border-top:1px solid var(--line)}.method-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}.method p,.method li,.sources li{color:var(--grey);font-size:.82rem}.method ul{margin:12px 0 0;padding-left:18px}.coverage{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-top:20px}.coverage-item{padding:12px 14px;border:1px solid var(--line-faint);color:var(--grey);font:11px/1.5 var(--font-mono)}.coverage-item b{color:var(--white);font-weight:500}.coverage-item .not-found{color:var(--grey-dim)}
.sources ol{margin:0;padding-left:22px}.sources li{padding:9px 0;border-bottom:1px solid var(--line-faint);overflow-wrap:anywhere}.sources a{color:var(--white);text-decoration-color:var(--grey-dim);text-underline-offset:3px}.sources a:hover{color:var(--accent)}
.disclaimer{max-width:1100px;margin:48px auto 0;padding:18px 20px;border:1px solid var(--line);color:var(--grey);font:11px/1.6 var(--font-mono);text-transform:uppercase}.report-footer{max-width:1100px;margin:48px auto 0;padding-top:24px;border-top:1px solid var(--line-faint);display:flex;justify-content:space-between;gap:20px;color:var(--grey-dim);font:10px/1.5 var(--font-mono);letter-spacing:.06em;text-transform:uppercase}
@media(max-width:780px){body{padding:32px 20px}.hero-grid,.section-grid,.method-grid{grid-template-columns:1fr}.research-card.wide{grid-column:auto}.plus-frame{padding:28px 22px}.structure-panel{min-height:220px}.structure img{height:220px}.identity h1{font-size:clamp(2.35rem,14vw,4rem)}.guide{margin-top:72px}.spec{grid-template-columns:1fr;gap:4px}.spec dd{margin-bottom:10px}.coverage{grid-template-columns:1fr}.report-footer{display:block}.report-footer span{display:block;margin-top:8px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
@media print{body{padding:20px;background:#fff;color:#111}.back,.replay{display:none}.pf-plus{background:#fff;color:#111}.pf-line,.guide,.method,.sources,.report-footer{border-color:#ccc}.demo-label,.guide-label,.research-card p,.method p,.method li,.sources li,.chemical-name,.structure figcaption{color:#444}.research-card{background:#fff}.section-grid{background:#ddd;border-color:#ccc}.identity h1,.sources a,.spec dd{color:#111}.plus-frame{max-width:none}.guide{margin-top:40px}.sources li{break-inside:avoid}.research-card{break-inside:avoid}}