@font-face{font-family:Barlow;src:url('../assets/iyh-navigation/BarlowCondensed-SemiBold.ttf') format('truetype');font-weight:600;font-display:swap}
@font-face{font-family:Barlow;src:url('../assets/iyh-navigation/BarlowCondensed-BoldItalic.ttf') format('truetype');font-weight:700;font-style:italic;font-display:swap}
:root{color-scheme:light;--paper:#f0f3f7;--ink:#25344b;--muted:#59667a;--orange:#ff9c36;--line:#d1dae5;--blue:#176199;font-family:'Avenir Next',Avenir,'Segoe UI',sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}html{scroll-padding-top:90px}body{margin:0;font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;background:linear-gradient(118deg,#e2eaf5,transparent 520px) no-repeat}.wrap{width:min(1240px,calc(100% - 96px));margin-inline:auto}a{color:var(--blue);text-underline-offset:5px}a:hover{color:var(--ink)}a:focus-visible,button:focus-visible,video:focus-visible{outline:3px solid var(--blue);outline-offset:4px}.site-header{background:#fff;border-bottom:1px solid var(--line)}.header-row{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:84px}.identity{display:flex;align-items:center;gap:13px;font-size:17px;font-weight:650;color:var(--ink);text-decoration:none}.monogram{display:grid;place-items:center;width:46px;height:46px;background:var(--ink);color:white;border-bottom:4px solid var(--orange);transform:skew(-7deg);font:italic 700 28px Barlow,sans-serif}.site-header nav{display:flex;gap:27px}.site-header nav a{display:inline-flex;align-items:center;min-height:44px;text-decoration:none;color:var(--ink);font-size:14px;font-weight:550}.hero{padding:44px 0 32px}.context{font-size:13px;color:var(--muted);margin:0 0 14px}h1{font:italic 700 clamp(48px,6vw,76px)/1.04 Barlow,'Arial Narrow',sans-serif;letter-spacing:0;margin:0 0 18px}p{margin:0 0 18px}.lead{font-size:20px;line-height:1.5;max-width:780px;margin:0}.hero .tools{font-size:13px;color:var(--muted);margin:20px 0 0}.demo{background:white;border:1px solid var(--line);border-top:4px solid var(--orange);border-radius:3px;box-shadow:0 4px 0 #e2e7ee}.demo-tabs{display:flex;flex-wrap:wrap;gap:4px 20px;padding:12px 20px;border-bottom:1px solid var(--line)}button{font:600 14px/1.4 'Avenir Next',Avenir,'Segoe UI',sans-serif;min-height:44px;padding:8px 2px;border:0;border-bottom:3px solid transparent;color:var(--muted);background:transparent;cursor:pointer}button[aria-pressed=true]{color:var(--ink);border-bottom-color:var(--orange)}button:hover{color:var(--blue)}video{display:block;width:100%;aspect-ratio:16/9;object-fit:contain;background:#1b2739}.caption{font-size:12px;color:var(--muted);padding:12px 20px;margin:0}.system{margin-top:48px;padding-top:28px;border-top:1px solid var(--line)}.section-heading{display:grid;grid-template-columns:260px minmax(0,1fr);gap:32px;margin-bottom:24px}.section-heading p{max-width:780px;margin:0}h2{font:600 36px/1.05 Barlow,'Arial Narrow',sans-serif;margin:0}h3{font:600 25px/1.15 Barlow,'Arial Narrow',sans-serif;margin:0 0 10px}.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));list-style:none;margin:30px 0;padding:0;border:1px solid var(--line);background:#fff}.flow li{padding:20px 24px;border-right:1px solid var(--line);position:relative}.flow li:last-child{border:0}.flow li:not(:last-child)::after{content:'→';position:absolute;right:-10px;top:23px;z-index:1;background:#fff;color:var(--blue);font-size:20px}.flow b{display:block;font:600 25px Barlow,sans-serif;margin-bottom:7px}.flow span{display:block;font-size:13px;color:var(--muted)}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;text-align:left;font-size:14px}th{font-size:12px;color:var(--muted);font-weight:650}td,th{padding:14px 18px 14px 0;border-bottom:1px solid var(--line);vertical-align:top}td:first-child{font-weight:600;min-width:135px}code{font:12px/1.6 Consolas,monospace;color:#365574;overflow-wrap:anywhere}.design-notes{display:grid;grid-template-columns:1fr 1fr;gap:48px;margin-top:30px}.design-notes p{font-size:15px;color:var(--muted);max-width:600px}.credit{display:grid;grid-template-columns:260px minmax(0,1fr);gap:32px;border-top:1px solid var(--line);padding-top:28px;margin-top:30px}.credit p{max-width:780px;font-size:15px}.links{display:flex;flex-wrap:wrap;gap:12px 28px;font-size:14px}.links a{min-height:44px;display:inline-flex;align-items:center;font-weight:600}.note{font-size:12px!important;color:var(--muted)}footer{display:flex;justify-content:space-between;gap:24px;border-top:1px solid var(--line);padding:26px 0;margin-top:38px!important;font-size:13px}footer a{min-height:44px;display:inline-flex;align-items:center}.skip{position:fixed;top:-100px;left:20px;background:var(--ink);color:white;padding:12px;z-index:10}.skip:focus{top:12px}
@media(max-width:800px){.wrap{width:calc(100% - 48px)}.section-heading,.credit{grid-template-columns:1fr;gap:16px}.flow{grid-template-columns:1fr 1fr}.flow li:nth-child(2){border-right:0}.flow li:nth-child(-n+2){border-bottom:1px solid var(--line)}.flow li:nth-child(2)::after{display:none}.design-notes{gap:28px}.hero{padding-top:32px}}
@media(max-width:550px){.wrap{width:calc(100% - 36px)}.header-row{min-height:74px;gap:12px}.identity{font-size:14px;gap:9px}.monogram{width:36px;height:38px;font-size:24px}.site-header nav{gap:16px}.site-header nav a{font-size:12px}.lead{font-size:17px}.hero{padding-bottom:26px}.demo-tabs{gap:4px 16px;padding:8px 12px}button{font-size:12px}.caption{padding:10px 12px}.system{margin-top:32px}.flow li{padding:16px}.flow b{font-size:23px}.flow span{font-size:12px}.design-notes{grid-template-columns:1fr;gap:12px}h2{font-size:32px}td,th{padding-right:12px}td:first-child{min-width:100px}table{font-size:13px}.table-wrap code{font-size:11px}.credit{margin-top:18px}footer{flex-wrap:wrap;gap:4px}}