/* One Stair · Form Architects design system.
   Layout: white masthead with the four words, ground page, black footer. Mundial throughout.
   Ink for type, Form blue as one accent moment per page, graphic palette for drawings and maps only. Single light theme by design. */
@font-face{font-family:"Mundial";src:url("fonts/MundialLight.otf") format("opentype");font-weight:300;font-display:swap}
@font-face{font-family:"Mundial";src:url("fonts/MundialDemibold.otf") format("opentype");font-weight:600;font-display:swap}
@font-face{font-family:"Mundial";src:url("fonts/MundialBold.otf") format("opentype");font-weight:700;font-display:swap}
@font-face{font-family:"Mundial";src:url("fonts/MundialBlack.otf") format("opentype");font-weight:900;font-display:swap}
:root{
  --ground:#f1f2f2;--paper:#ffffff;--ink:#282829;--ink-muted:#5c5e5f;--rule:#282829;--rule-light:#dcdddd;--dim:#e4e5e4;
  --accent:#384e66;--on-accent:#f1f2f2;
  --blue:#779eba;--blue-light:#b5cee1;--indigo:#8d91bd;--indigo-light:#c3c7e3;--violet:#ad8baf;--violet-light:#d8c2d9;
  --green:#89a982;--green-light:#bed3ba;--red:#c8847e;--red-light:#e7c0bc;--yellow:#c3ab72;--yellow-light:#e5d4ad;--orange:#cf9a74;--orange-light:#e4c5b1;
  --grey:#9a9c9e;--grey-light:#cfd1d2;
  --map-ground:#ececea;--map-outside:#f7f7f6;--map-context:#cccccc;--map-street:#ffffff;--map-rail:#939393;--water:#dfe7ed;
  --font:"Mundial","Helvetica Neue",Arial,sans-serif;color-scheme:light;
}
*{box-sizing:border-box;border-radius:0}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
body{margin:0;background:var(--ground);color:var(--ink);font-family:var(--font);font-weight:300;font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased;min-height:100%;display:flex;flex-direction:column}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:40;background:var(--paper)}
a{color:inherit}
b,strong{font-weight:700}
h1,h2,h3{margin:0;text-wrap:balance;line-height:1.1}
h1{font-weight:900;text-transform:uppercase;font-size:clamp(44px,7vw,96px);line-height:.92;letter-spacing:-.01em}
h2{font-weight:900;text-transform:uppercase;font-size:clamp(30px,4.4vw,54px);line-height:.95;letter-spacing:-.01em}
h3{font-weight:700;font-size:21px;line-height:1.2}
p{margin:0;max-width:62ch}
.lede{font-size:clamp(18px,1.6vw,22px);line-height:1.45;max-width:56ch}
.kicker{font-weight:600;font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-muted)}
.muted{color:var(--ink-muted)}
.small{font-size:13.5px;line-height:1.5}
.num{font-variant-numeric:tabular-nums lining-nums}
svg text{font-family:var(--font)}
button{font-family:var(--font)}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--ink);outline-offset:2px}

/* masthead */
.mast{position:sticky;top:env(safe-area-inset-top,0px);z-index:30;background:var(--paper);border-bottom:3px solid var(--ink)}
.mast .in{display:flex;align-items:stretch;justify-content:space-between;gap:16px;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));min-height:64px}
@media(min-width:900px){.mast .in{padding-left:48px;padding-right:48px;min-height:72px}}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink)}
.brand svg{height:34px;width:auto;display:block}
.brand span{font-weight:900;font-size:15px;letter-spacing:.04em;line-height:1;text-transform:uppercase}
.words{display:flex;align-items:stretch;gap:0}
.words a{display:flex;align-items:center;gap:10px;padding:0 18px;text-decoration:none;font-weight:300;font-size:14px;letter-spacing:.18em;text-transform:uppercase;color:var(--ink);border-bottom:3px solid transparent;margin-bottom:-3px}
.words a i{font-style:normal;font-weight:300;font-size:12px;letter-spacing:0;color:var(--ink-muted)}
.words a:hover{color:var(--accent)}
.words a.on{color:var(--accent);border-bottom-color:var(--accent);font-weight:600}
@media(max-width:760px){.brand span{display:none}.words a{padding:0 9px;font-size:11px;letter-spacing:.12em}.words a i{display:none}}

/* page */
main{flex:1}
.wrap{max-width:1200px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));padding-block:56px 72px;display:flex;flex-direction:column;gap:80px}
@media(min-width:900px){.wrap{padding-left:48px;padding-right:48px}}
.wrap > *{min-width:0}
section{display:flex;flex-direction:column;gap:24px}
.title{display:grid;grid-template-columns:1fr;gap:18px;align-items:end}
@media(min-width:900px){.title{grid-template-columns:3fr 2fr;gap:48px}}
.title .no{font-weight:900;font-size:clamp(80px,14vw,180px);line-height:.8;letter-spacing:-.03em;color:var(--accent)}
.shead{font-weight:700;font-size:11px;letter-spacing:.06em;text-transform:uppercase;border-top:1px solid var(--rule);padding-top:8px}
.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:32px}
.grid3{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}
.grid2 > *,.grid3 > *{min-width:0}
figure{margin:0;display:flex;flex-direction:column;gap:10px}
figure svg{display:block;width:100%;height:auto}
figcaption{font-size:13px;line-height:1.45;color:var(--ink-muted)}
figcaption b{color:var(--ink);font-weight:600;letter-spacing:.12em;text-transform:uppercase;font-size:10px;margin-right:8px}
.plate{background:var(--paper);padding:20px}
.figures{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:28px;border-top:2px solid var(--rule);padding-top:20px}
.figures > div{display:flex;flex-direction:column;gap:8px;min-width:0}
.fig{font-weight:900;font-size:clamp(40px,4.4vw,56px);line-height:.9;letter-spacing:-.01em;white-space:nowrap}
.fig.accent{color:var(--accent)}
.figures h3{font-size:16px}
.figures p{font-size:14px;color:var(--ink-muted)}
.btn{display:inline-flex;align-items:center;gap:10px;background:var(--ink);color:var(--ground);text-decoration:none;font-weight:700;font-size:12px;letter-spacing:.16em;text-transform:uppercase;padding:14px 22px;border:1px solid var(--ink);cursor:pointer}
.btn.ghost{background:transparent;color:var(--ink)}
.btn.accent{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}
.btn[disabled]{opacity:.4;cursor:default}
.tag{display:inline-block;font-weight:600;font-size:11px;letter-spacing:.08em;text-transform:uppercase;padding:2px 7px;border:.5px solid var(--ink);white-space:nowrap}
.tag.soft{border-color:var(--rule-light);color:var(--ink-muted)}
table{border-collapse:collapse;width:100%;font-size:14.5px}
th,td{text-align:left;vertical-align:top;padding:9px 12px 9px 0;border-bottom:.5px solid var(--rule-light)}
thead th{font-weight:600;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-muted);border-bottom:1px solid var(--rule);padding-bottom:6px;white-space:nowrap}
tbody th{font-weight:700}
td.n,th.n{text-align:right;white-space:nowrap;font-variant-numeric:tabular-nums}
tr.total th,tr.total td{font-weight:700;border-top:1px solid var(--rule);border-bottom:0}
.tbl{overflow-x:auto}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:2px}
.steps > div{background:var(--paper);padding:20px;display:flex;flex-direction:column;gap:8px;min-width:0}
.steps b{font-weight:900;font-size:28px;line-height:1}
.steps span{font-size:14.5px;line-height:1.45}
.steps i{font-style:normal;font-weight:600;font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-muted)}
.next{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;border-top:3px solid var(--ink);padding-top:20px}
.next a.big{text-decoration:none;font-weight:900;text-transform:uppercase;font-size:clamp(28px,4vw,44px);line-height:1;letter-spacing:-.01em;display:flex;align-items:baseline;gap:14px}
.next a.big i{font-style:normal;font-weight:300;font-size:16px;letter-spacing:.2em;color:var(--ink-muted)}
.next a.big:hover{color:var(--accent)}

/* footer */
footer{background:var(--ink);color:var(--ground);margin-top:auto}
footer .in{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px 32px;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));padding-block:22px calc(22px + env(safe-area-inset-bottom,0px));font-size:12.5px;letter-spacing:.04em}
@media(min-width:900px){footer .in{padding-left:48px;padding-right:48px}}
footer img{height:26px;width:auto;display:block}
footer .f{display:flex;flex-wrap:wrap;gap:8px 28px;align-items:center}
footer .f span{color:#a3a5a6}
footer a{color:var(--ground);text-decoration:none;font-weight:600;letter-spacing:.14em;text-transform:uppercase;font-size:11px}
footer a:hover{text-decoration:underline}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}