:root{--ink:#121826;--muted:#667085;--paper:#fbfaf7;--card:#fff;--line:#d8dce3;--ni:#f3b61f;--blue:#183153}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.62 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{color:inherit}
header{padding:22px max(22px,calc((100vw - 1120px)/2));background:#101319;color:#fff;display:flex;align-items:center;gap:24px;flex-wrap:wrap}.logo{display:flex;align-items:center;gap:12px;text-decoration:none;margin-right:auto}.logo>span:last-child{font-weight:800;font-size:20px}.logo small{display:block;color:#aeb6c5;font-weight:500;font-size:12px}.logo-mark{height:42px;min-width:66px;border:2px solid currentColor;display:flex;align-items:center;padding:6px;gap:3px;transform:skew(-7deg)}.logo-mark b{font-size:17px;letter-spacing:-.06em;margin-right:2px}.logo-mark em{width:5px;height:19px;background:var(--ni);transform:skew(-8deg)}
nav{width:100%;display:flex;gap:8px;overflow:auto}nav a,.languages summary{border:1px solid #3a404b;border-radius:99px;padding:7px 13px;text-decoration:none;white-space:nowrap;font-size:14px}nav a[aria-current=page]{background:var(--ni);border-color:var(--ni);color:#111;font-weight:800}.languages{position:relative}.languages summary{cursor:pointer}.languages div{position:absolute;right:0;z-index:2;background:#fff;color:#111;padding:10px;border-radius:12px;box-shadow:0 12px 35px #0003;display:grid;grid-template-columns:repeat(2,minmax(120px,1fr))}.languages a{padding:5px}
main{max-width:920px;margin:auto;padding:72px 22px 100px}.hero{padding:34px 0}.eyebrow{font-weight:900;letter-spacing:.16em;color:#9a6500}h1{font-size:clamp(38px,7vw,72px);line-height:1.02;letter-spacing:-.045em;max-width:850px;margin:.2em 0}h2{font-size:30px;line-height:1.15;margin-top:2.2em}h3{line-height:1.2}.lead{font-size:clamp(20px,2.5vw,27px);line-height:1.45;color:#364152;max-width:800px}.button{display:inline-block;background:var(--ink);color:#fff;text-decoration:none;padding:12px 18px;border-radius:9px;font-weight:800}.text-link,.download{font-weight:750}
.scale{display:grid;grid-template-columns:repeat(7,1fr);gap:8px;margin:26px 0}.scale a{min-width:0;border:1px solid var(--line);background:var(--card);border-radius:12px;padding:15px 10px;text-decoration:none;text-align:center}.scale b,.scale span{display:block}.scale b{font-size:22px}.scale span{color:var(--muted);font-size:12px}.note,.placeholder,.formula{border-left:5px solid var(--ni);background:#fff7dd;padding:18px 20px;border-radius:3px 12px 12px 3px;margin:28px 0}.formula{font-size:25px;border-color:var(--blue);background:#eef4fb}.sources li{margin:.7em 0}.version{color:var(--muted)}
.media-hero{padding:20px 0 45px}.media-hero>.ni-rail{margin:28px 0 24px;transform:scale(1.35);transform-origin:left center}.media-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap}.ni-rail{display:inline-flex;align-items:center;gap:7px;border:2px solid var(--ink);background:#fff;color:var(--ink);padding:5px 8px 5px 7px;line-height:1;font-weight:900;white-space:nowrap}.ni-rail>b{font-size:15px;letter-spacing:-.08em}.ni-rail>i{display:grid;place-items:center;background:var(--ink);color:#fff;font:900 14px/1 system-ui;width:20px;height:20px;font-style:normal}.ni-rail>span{display:flex;gap:3px}.ni-rail em{display:block;width:5px;height:18px;background:#d7dbe2;transform:skew(-10deg)}.ni-rail em.on{background:var(--ni)}
.badge-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(185px,1fr));gap:12px;margin:24px 0}.badge-grid article{display:grid;justify-items:start;gap:16px;background:#fff;border:1px solid var(--line);padding:22px;border-radius:12px}.download{font-size:14px}.rules{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.rules article{border-top:4px solid var(--ni);background:#fff;padding:20px}.rules article>b{color:#976300;font-size:13px}.rules h3{margin:.4em 0}.rules p{color:var(--muted);font-size:15px}
.size-demo{display:flex;align-items:end;gap:28px;background:#fff;border:1px solid var(--line);padding:28px;overflow:auto}.size-demo>div{display:grid;gap:8px}.size-demo>div>span{font-size:12px;color:var(--muted)}.size-demo .small .ni-rail{transform:scale(.7);transform-origin:left bottom;margin-right:-28px}.size-demo .micro strong{font-size:16px;border:1.5px solid;padding:2px 4px;line-height:1}.colour-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.swatch{min-height:130px;padding:18px;font-weight:900;display:flex;flex-direction:column;justify-content:end}.swatch code{font-weight:500}.swatch.ink{background:var(--ink);color:#fff}.swatch.gold{background:var(--ni)}.swatch.paper{background:var(--paper);border:1px solid var(--line)}
footer{background:#101319;color:#aeb6c5;padding:32px max(22px,calc((100vw - 920px)/2));font-size:14px}.language-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px}.language-grid a{padding:18px;background:#fff;border:1px solid var(--line);border-radius:10px}
@media(max-width:700px){main{padding-top:42px}.scale{grid-template-columns:repeat(2,1fr)}h1{font-size:42px}.languages div{right:-10px}.rules{grid-template-columns:1fr}.colour-grid{grid-template-columns:1fr}.swatch{min-height:95px}}