/* Arbor presentation frame. Website identity observed 2026-10-06; layout adapted for briefs. */
@font-face{font-family:'Funnel Sans';font-style:normal;font-weight:300;font-display:swap;src:url('funnel-sans-light.ttf') format('truetype')}
@font-face{font-family:'Funnel Sans';font-style:normal;font-weight:400;font-display:swap;src:url('funnel-sans-regular.ttf') format('truetype')}
@font-face{font-family:'Funnel Sans';font-style:normal;font-weight:600;font-display:swap;src:url('funnel-sans-semibold.ttf') format('truetype')}
@font-face{font-family:'Roboto Mono';font-style:normal;font-weight:400;font-display:swap;src:url('roboto-mono-regular.ttf') format('truetype')}
:root{color-scheme:dark;--bg:#000;--panel:#080c08;--ink:#edf3e9;--muted:#b8c3b3;--accent:#beeaab;--line:rgba(190,234,171,.24);--font-body:'Funnel Sans',Arial,sans-serif;--font-label:'Roboto Mono',monospace;--content-width:1440px;--gutter:clamp(22px,4vw,64px)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.55 var(--font-body);-webkit-font-smoothing:antialiased}
a{color:inherit;text-underline-offset:5px}
button{font:inherit;cursor:pointer}
header{max-width:var(--content-width);margin:auto;min-height:90px;padding:24px var(--gutter);border:1px solid var(--line);border-top:0;display:flex;align-items:center;justify-content:space-between;gap:32px}
.brandlockup{display:flex;align-items:center;gap:24px;flex-shrink:0}
.brandlogo{display:inline-flex;text-decoration:none;line-height:1}
.brandlogo img{display:block;width:141px;height:auto}
.presenter{font:400 10px/1.6 var(--font-label);text-transform:uppercase;letter-spacing:1px;color:var(--muted);max-width:115px}
nav{display:flex;gap:22px;flex-wrap:wrap}
nav a{font:400 11px/1.5 var(--font-label);letter-spacing:.5px;text-transform:uppercase;text-decoration:none;padding:4px 0}
nav a:hover{color:var(--accent)}
main{max-width:var(--content-width);margin:auto;padding:56px var(--gutter) 40px;border-left:1px solid var(--line);border-right:1px solid var(--line)}
.intro{display:grid;grid-template-columns:1.5fr 1fr;gap:5vw;align-items:end;margin-bottom:44px}
.eyebrow,.label,.tag{font:400 11px/1.6 var(--font-label);text-transform:uppercase;letter-spacing:1.1px;color:var(--muted)}
.label{margin-bottom:10px}
h1,h2,h3{font-weight:300;overflow-wrap:break-word}
h1{font-size:clamp(40px,5vw,70px);line-height:1.03;letter-spacing:-1.8px;margin:16px 0 0;color:var(--accent);max-width:850px}
h2{font-size:clamp(31px,3.2vw,46px);line-height:1.1;letter-spacing:-1px;margin:16px 0 28px;color:var(--accent)}
h3{font-size:25px;line-height:1.2;letter-spacing:-.35px;margin:0 0 14px}
p{margin:0 0 18px}
b,strong{font-weight:600}
.muted{color:var(--muted)}
.intro p{font-size:18px;line-height:1.5}
.intro p:last-child{margin-bottom:0}
.draft{border:1px solid var(--line);padding:8px 12px;display:inline-block;margin-bottom:18px;color:var(--accent);font:400 11px/1.6 var(--font-label);text-transform:uppercase;letter-spacing:.6px}
.briefstatement{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:32px 0;display:grid;grid-template-columns:.65fr 2fr;gap:5vw}
.briefstatement p{font-size:clamp(26px,3vw,38px);font-weight:300;line-height:1.3;letter-spacing:-.5px;margin:0}
.briefstatement .label{color:var(--accent)}
section{padding-top:60px;scroll-margin-top:28px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:5vw}
.lead{font-size:23px;line-height:1.4;font-weight:300;max-width:690px}
.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border:1px solid var(--line)}
.card{padding:28px;border-right:1px solid var(--line)}
.card:last-child{border-right:0}
.card p{color:var(--muted);margin-bottom:0}
.card .label{color:var(--accent)}
.recommend{padding:28px 30px;border-left:2px solid var(--accent);background:var(--panel);margin-top:30px}
.recommend p:last-child{margin-bottom:0}
.recommend .label,.recommend strong{color:var(--accent)}
.rows article{border-top:1px solid var(--line);padding:24px 0;display:grid;grid-template-columns:.6fr 1.4fr;gap:30px}
.rows article h3,.rows article p{margin:0}
.rows article p{color:var(--muted)}
.scope{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.scope h3:not(:first-child){margin-top:28px}
details{border-top:1px solid var(--line);padding:20px 0}
summary{font-size:21px;font-weight:300;line-height:1.3;cursor:pointer;padding-right:8px}
summary:hover{color:var(--accent)}
details p{margin:16px 0 0;max-width:850px;color:var(--muted)}
details .label{margin-top:24px;color:var(--accent)}
details ul{color:var(--muted);padding-left:22px}
details li{margin:10px 0}
details h3{margin-top:22px;font-size:23px}
.referencegrid{display:grid;grid-template-columns:1fr 1fr;gap:18px 32px;margin-top:12px}
.referencegrid p{margin:6px 0 0}
.minor{font-size:14px;color:var(--muted)}
.alignment{padding:32px;border:1px solid var(--accent);background:var(--panel)}
.alignment ol{padding-left:22px;margin-bottom:0}
.alignment li{padding:7px 0}
footer{margin-top:64px;border-top:1px solid var(--line);padding-top:24px;display:flex;justify-content:space-between;gap:24px;color:var(--muted);font-size:14px}
.hidden{display:none}
button:focus-visible,a:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:6px}
@media(max-width:1080px){header{align-items:flex-start;flex-direction:column;gap:22px}.presenter{max-width:none}nav{gap:14px 24px}}
@media(max-width:850px){.intro,.split,.scope,.briefstatement,.rows article{grid-template-columns:1fr;gap:22px}.intro{margin-bottom:32px}.grid3{grid-template-columns:1fr}.card{border-right:0;border-bottom:1px solid var(--line)}.card:last-child{border-bottom:0}.intro p{max-width:600px}.briefstatement .label{margin-bottom:0}h1{letter-spacing:-1.1px}main{padding-top:36px}}
@media(max-width:650px){.referencegrid{grid-template-columns:1fr;gap:10px}footer{flex-direction:column}.brandlockup{gap:18px}.presenter{max-width:115px}nav{gap:12px 18px}nav a{font-size:10px}section{padding-top:46px}.alignment,.recommend{padding:24px}.card{padding:24px}.rows article{gap:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}