/* ------------------------------------------------------------------
   Tokens
   Brand colours are taken from the CSI logo: rich black + signal red.
------------------------------------------------------------------- */
:root{
  --paper:#F1F2F2;
  --surface:#FFFFFF;
  --ink:#231F20;
  --ink-2:#585A5D;
  --rule:#D3D5D6;
  --red:#E4202A;
  --red-text:#C8161F;
  --on-red:#FFFFFF;
  --band:#231F20;
  --on-band:#F4F4F2;
  --ph-a:#E4E6E7;
  --ph-b:#D2D5D7;
  --mark:rgba(35,31,32,.35);
  --grain-op:.45;
  --show-l:block;
  --show-d:none;
  --font:"Archivo","Helvetica Neue",Arial,system-ui,sans-serif;

  box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px);
  padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --paper:#141314;
    --surface:#1E1C1D;
    --ink:#F1F1EF;
    --ink-2:#A6A8AB;
    --rule:#343132;
    --red:#EA2A33;
    --red-text:#FF5A61;
    --band:#262324;
    --on-band:#F4F4F2;
    --ph-a:#2B2829;
    --ph-b:#201E1F;
    --mark:rgba(241,241,239,.3);
    --grain-op:.3;
    --show-l:none;
    --show-d:block;
  }
}
:root[data-theme="dark"]{
  --paper:#141314;
  --surface:#1E1C1D;
  --ink:#F1F1EF;
  --ink-2:#A6A8AB;
  --rule:#343132;
  --red:#EA2A33;
  --red-text:#FF5A61;
  --band:#262324;
  --on-band:#F4F4F2;
  --ph-a:#2B2829;
  --ph-b:#201E1F;
  --mark:rgba(241,241,239,.3);
  --grain-op:.3;
  --show-l:none;
  --show-d:block;
}

/* ------------------------------------------------------------------
   Base
------------------------------------------------------------------- */
*,*::before,*::after{box-sizing:border-box}
html{
  scroll-padding-top:calc(env(safe-area-inset-top,0px) + 84px);
  -webkit-text-size-adjust:100%;
}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font);
  font-size:1rem;
  line-height:1.6;
  font-stretch:100%;
  -webkit-font-smoothing:antialiased;
}
[hidden]{display:none !important}
img{max-width:100%;display:block}
a{color:inherit}
p{margin:0}
h1,h2,h3{margin:0;font-family:var(--font);letter-spacing:-.015em}
h1{font-size:clamp(2rem,4.3vw,3.6rem);line-height:1.06;font-weight:800;font-stretch:125%}
h2{font-size:clamp(1.55rem,2.9vw,2.35rem);line-height:1.12;font-weight:750;font-stretch:118%}
h3{font-size:1.1rem;line-height:1.3;font-weight:700;font-stretch:110%}
:focus-visible{outline:2px solid var(--red);outline-offset:3px;border-radius:2px}
.wrap{width:100%;max-width:1200px;margin-inline:auto;padding-inline:clamp(20px,4vw,48px)}
.sec{padding-block:clamp(56px,8vw,104px)}
.sec-tight{padding-block:clamp(40px,5vw,64px)}
.lede{font-size:clamp(1.05rem,1.4vw,1.2rem);line-height:1.6;color:var(--ink-2);max-width:56ch}
.muted{color:var(--ink-2)}

/* plaster texture, echoing the wall on the CSI visiting cards */
.grain{position:relative;isolation:isolate}
.grain::before{
  content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;opacity:var(--grain-op);
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='260' height='260'><filter id='n' x='0' y='0' width='100%' height='100%'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 .45  0 0 0 0 .45  0 0 0 0 .45  0 0 0 1.5 -.68'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

/* ------------------------------------------------------------------
   Buttons
------------------------------------------------------------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.85rem 1.4rem;border-radius:2px;border:1.5px solid transparent;
  font:600 .95rem/1.1 var(--font);font-stretch:108%;text-decoration:none;cursor:pointer;
  transition:background-color .15s,color .15s,border-color .15s;
}
.btn-red{background:var(--red);color:var(--on-red)}
.btn-red:hover{background:#c91a23}
.btn-line{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-line:hover{background:var(--ink);color:var(--paper)}
.btn-line-light{border-color:rgba(244,244,242,.6);color:var(--on-band);background:transparent}
.btn-line-light:hover{background:var(--on-band);color:var(--band)}
.btn-sm{padding:.65rem 1.05rem;font-size:.88rem}

/* ------------------------------------------------------------------
   Header
------------------------------------------------------------------- */
.site-header{
  position:sticky;top:env(safe-area-inset-top,0px);z-index:50;
  background:color-mix(in srgb,var(--paper) 88%,transparent);
  -webkit-backdrop-filter:saturate(1.4) blur(12px);backdrop-filter:saturate(1.4) blur(12px);
  border-bottom:1px solid var(--rule);
}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px}
.logo-l,.logo-d{
  width:148px;aspect-ratio:720/231;background-size:contain;background-repeat:no-repeat;background-position:left center;flex:none;
}
.logo-l{background-image:url("logo-light.png");display:var(--show-l)}
.logo-d{background-image:url("logo-dark.png");display:var(--show-d)}
.brand{display:block;line-height:0}
.nav{display:flex;align-items:center;gap:clamp(18px,3vw,36px)}
.nav a.link{
  text-decoration:none;font-weight:600;font-size:.95rem;font-stretch:106%;padding:.4rem 0;
  border-bottom:2px solid transparent;color:var(--ink-2);transition:color .15s,border-color .15s;
}
.nav a.link:hover{color:var(--ink)}
.nav a.link[aria-current="page"]{color:var(--ink);border-bottom-color:var(--red)}
.menu-btn{
  display:none;background:none;border:1.5px solid var(--ink);color:var(--ink);border-radius:2px;
  width:44px;height:44px;cursor:pointer;align-items:center;justify-content:center;
}
.menu-btn svg{width:20px;height:20px}
@media (max-width:820px){
  .menu-btn{display:inline-flex}
  .nav{
    position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;gap:0;
    background:var(--paper);border-bottom:1px solid var(--rule);padding:8px clamp(20px,4vw,48px) 20px;
    display:none;
  }
  .nav.open{display:flex}
  .nav a.link{padding:1rem 0;border-bottom:1px solid var(--rule);font-size:1.05rem}
  .nav a.link[aria-current="page"]{border-bottom-color:var(--red)}
  .nav .btn{margin-top:16px}
}

/* ------------------------------------------------------------------
   Image placeholders
   Replace by adding a file path or data URI to the PHOTOS object in the
   script at the bottom of this page.
------------------------------------------------------------------- */
.ph{
  position:relative;overflow:hidden;width:100%;
  background:linear-gradient(135deg,var(--ph-a),var(--ph-b));
  aspect-ratio:var(--ar,4/3);
  display:flex;align-items:center;justify-content:center;text-align:center;
  color:var(--ink-2);
  border-radius:2px;
}
.ph::before{
  content:"";position:absolute;inset:14px;pointer-events:none;z-index:1;
  background:
    linear-gradient(var(--mark),var(--mark)) top left/18px 1px no-repeat,
    linear-gradient(var(--mark),var(--mark)) top left/1px 18px no-repeat,
    linear-gradient(var(--mark),var(--mark)) top right/18px 1px no-repeat,
    linear-gradient(var(--mark),var(--mark)) top right/1px 18px no-repeat,
    linear-gradient(var(--mark),var(--mark)) bottom left/18px 1px no-repeat,
    linear-gradient(var(--mark),var(--mark)) bottom left/1px 18px no-repeat,
    linear-gradient(var(--mark),var(--mark)) bottom right/18px 1px no-repeat,
    linear-gradient(var(--mark),var(--mark)) bottom right/1px 18px no-repeat;
}
.ph img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.ph-in{display:grid;gap:4px;justify-items:center;padding:0 24px;max-width:90%}
.ph-in svg{width:30px;height:30px;stroke:currentColor;opacity:.75;margin-bottom:6px}
.ph-in strong{font-size:.82rem;font-weight:650;color:var(--ink);font-stretch:108%}
.ph-in span{font-size:.8rem;line-height:1.3}
.ph-in em{font-style:normal;font-size:.74rem;opacity:.8}
/* red wedge taken from the dot of the "i" in the CSI mark */
.ph.cut::after{
  content:"";position:absolute;top:0;right:0;z-index:2;background:var(--red);
  width:var(--wedge,26px);height:var(--wedge,26px);
  clip-path:polygon(0 0,100% 0,100% 100%);
}

/* ------------------------------------------------------------------
   Home: hero
------------------------------------------------------------------- */
.hero{padding-block:clamp(40px,6vw,88px) clamp(40px,5vw,72px)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:clamp(28px,5vw,72px);align-items:center}
.hero h1{max-width:15ch}
.hero .lede{margin-top:clamp(18px,2vw,26px)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:clamp(24px,3vw,36px)}
.hero-media{position:relative}
.hero-media .ph{--ar:4/5;--wedge:clamp(56px,9vw,104px)}
.hero-cap{
  position:absolute;left:0;bottom:0;z-index:3;background:var(--surface);color:var(--ink);
  padding:14px 18px;max-width:78%;border-top-right-radius:2px;
}
.hero-cap b{display:block;font-size:.92rem;font-stretch:108%;font-weight:700;line-height:1.3}
.hero-cap span{font-size:.82rem;color:var(--ink-2)}
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr}
  .hero h1{max-width:20ch}
  .hero-media .ph{--ar:4/3}
}
/* one deliberate moment on load: the image wipes in and the wedge lands */
@media (prefers-reduced-motion:no-preference){
  .hero-media .ph{animation:wipe .9s cubic-bezier(.2,.7,.2,1) both}
  .hero-media .ph.cut::after{animation:wedge .5s .75s cubic-bezier(.3,1.4,.5,1) both;transform-origin:top right}
  @keyframes wipe{from{clip-path:inset(0 0 100% 0)}to{clip-path:inset(0 0 0 0)}}
  @keyframes wedge{from{transform:scale(0)}to{transform:scale(1)}}
}

/* facts strip */
.facts{border-block:1px solid var(--rule)}
.facts .wrap{display:grid;grid-template-columns:repeat(4,1fr)}
.fact{padding:clamp(20px,2.6vw,32px) clamp(12px,2vw,28px);border-left:1px solid var(--rule)}
.fact:first-child{border-left:0;padding-left:0}
.fact b{display:block;font-size:clamp(1.6rem,3vw,2.4rem);line-height:1;font-weight:800;font-stretch:125%;letter-spacing:-.02em}
.fact span{display:block;margin-top:8px;font-size:.9rem;color:var(--ink-2);line-height:1.35}
@media (max-width:700px){
  .facts .wrap{grid-template-columns:1fr 1fr}
  .fact:nth-child(3){border-left:0;padding-left:0}
  .fact:nth-child(n+3){border-top:1px solid var(--rule)}
}

/* ------------------------------------------------------------------
   Home: scope of work
------------------------------------------------------------------- */
.scope-grid{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:clamp(28px,6vw,88px);align-items:start}
.scope-intro{position:sticky;top:calc(env(safe-area-inset-top,0px) + 108px)}
.scope-intro .lede{margin-top:18px}
.scope-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--ink)}
.scope-list li{
  display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.3fr);gap:8px 32px;
  padding:22px 0;border-bottom:1px solid var(--rule);
}
.scope-list p{color:var(--ink-2);font-size:.98rem}
@media (max-width:900px){
  .scope-grid{grid-template-columns:1fr}
  .scope-intro{position:static}
}
@media (max-width:560px){
  .scope-list li{grid-template-columns:1fr}
}

/* ------------------------------------------------------------------
   Home: selected work register
------------------------------------------------------------------- */
.work{background:var(--surface);border-block:1px solid var(--rule)}
.work-head{display:flex;flex-wrap:wrap;align-items:end;justify-content:space-between;gap:16px 32px;margin-bottom:clamp(28px,4vw,48px)}
.work-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:clamp(28px,6vw,88px);align-items:start}
.reg{list-style:none;margin:0;padding:0;border-top:1px solid var(--ink)}
.reg a{
  position:relative;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px 20px;align-items:baseline;
  padding:20px 0 20px 0;border-bottom:1px solid var(--rule);text-decoration:none;
  color:var(--ink-2);transition:color .15s,padding-left .2s;
}
.reg a::before{
  content:"";position:absolute;left:0;top:50%;width:10px;height:10px;margin-top:-5px;background:var(--red);
  clip-path:polygon(0 0,100% 0,100% 100%);opacity:0;transition:opacity .15s;
}
.reg a .n{font-size:clamp(1.05rem,1.7vw,1.35rem);font-weight:700;font-stretch:112%;line-height:1.25;letter-spacing:-.01em}
.reg a .c{font-size:.85rem;text-align:right}
.reg a:hover,.reg a.on,.reg a:focus-visible{color:var(--ink);padding-left:22px}
.reg a:hover::before,.reg a.on::before,.reg a:focus-visible::before{opacity:1}
.preview{position:sticky;top:calc(env(safe-area-inset-top,0px) + 108px)}
.preview .ph{--ar:4/5;--wedge:64px}
.preview-cap{margin-top:14px}
.preview-cap b{display:block;font-stretch:110%;font-weight:700}
.preview-cap span{font-size:.92rem;color:var(--ink-2)}
@media (max-width:900px){
  .work-grid{grid-template-columns:1fr}
  .preview{display:none}
  .reg a{padding-left:0 !important}
  .reg a::before{display:none}
}

/* ------------------------------------------------------------------
   CTA band
------------------------------------------------------------------- */
.band{position:relative;overflow:hidden;background:var(--band);color:var(--on-band)}
.band::after{
  content:"";position:absolute;top:0;right:0;width:clamp(120px,22vw,300px);aspect-ratio:1;background:var(--red);
  clip-path:polygon(0 0,100% 0,100% 100%);
}
.band .wrap{position:relative;z-index:1}
.band h2{max-width:20ch}
.band p{margin-top:16px;max-width:52ch;color:rgba(244,244,242,.78)}
.band .hero-actions{margin-top:28px}

/* ------------------------------------------------------------------
   Page header (inner pages)
------------------------------------------------------------------- */
.page-head{padding-block:clamp(40px,6vw,80px) clamp(24px,3vw,40px)}
.page-head h1{max-width:18ch}
.page-head .lede{margin-top:18px}

/* ------------------------------------------------------------------
   Projects page
------------------------------------------------------------------- */
.filters{display:flex;flex-wrap:wrap;gap:6px 26px;border-bottom:1px solid var(--rule);margin-bottom:clamp(28px,4vw,44px)}
.filters button{
  background:none;border:0;border-bottom:2px solid transparent;margin-bottom:-1px;padding:12px 0;cursor:pointer;
  font:600 .95rem/1.2 var(--font);font-stretch:106%;color:var(--ink-2);
}
.filters button:hover{color:var(--ink)}
.filters button[aria-pressed="true"]{color:var(--ink);border-bottom-color:var(--red)}
.filters small{font-size:.78rem;font-weight:500;margin-left:6px;color:var(--ink-2)}
.tiles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(28px,3.5vw,44px) clamp(20px,2.5vw,32px)}
.tile .ph{--ar:4/3;--wedge:26px}
.tile h3{margin-top:14px;font-size:1.02rem}
.tile-meta{display:flex;justify-content:space-between;gap:12px;margin-top:4px;font-size:.88rem;color:var(--ink-2)}
.tile-meta span:last-child{text-align:right;flex:none}
@media (max-width:980px){.tiles{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:600px){.tiles{grid-template-columns:1fr}}
.note{margin-top:clamp(36px,5vw,56px);padding-top:20px;border-top:1px solid var(--rule);font-size:.9rem;color:var(--ink-2);max-width:70ch}

/* ------------------------------------------------------------------
   Company page
------------------------------------------------------------------- */
.about-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:clamp(28px,6vw,88px);align-items:start}
.about-grid .ph{--ar:4/3;--wedge:56px}
.about-copy p+p{margin-top:16px}
.about-copy p{color:var(--ink-2);max-width:60ch}
.about-copy p.big{color:var(--ink);font-size:clamp(1.15rem,1.9vw,1.45rem);line-height:1.5;font-weight:500;max-width:34ch;font-stretch:104%}
@media (max-width:900px){.about-grid{grid-template-columns:1fr}}

.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-top:1px solid var(--ink)}
.steps li{padding:24px 24px 0 0}
.steps li+li{padding-left:24px;border-left:1px solid var(--rule)}
.steps .k{display:block;font-size:2rem;line-height:1;font-weight:800;font-stretch:125%;color:var(--red-text);margin-bottom:18px}
.steps p{margin-top:8px;color:var(--ink-2);font-size:.95rem}
@media (max-width:900px){
  .steps{grid-template-columns:1fr 1fr}
  .steps li{padding:22px 20px 26px 0;border-bottom:1px solid var(--rule)}
  .steps li+li{padding-left:0;border-left:0}
  .steps li:nth-child(even){padding-left:20px;border-left:1px solid var(--rule)}
}
@media (max-width:520px){
  .steps{grid-template-columns:1fr}
  .steps li:nth-child(even){padding-left:0;border-left:0}
}

.contact-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(28px,6vw,88px);align-items:start}
.people{display:grid;gap:0;margin-top:28px;border-top:1px solid var(--ink)}
.person{display:grid;grid-template-columns:56px 1fr;gap:16px;align-items:center;padding:18px 0;border-bottom:1px solid var(--rule)}
.avatar{
  width:56px;height:56px;border-radius:50%;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--ph-a),var(--ph-b));color:var(--ink);font-weight:700;font-stretch:112%;font-size:.95rem;
  border:1px dashed var(--mark);
}
.person b{display:block;font-stretch:108%}
.person a{color:var(--ink-2);text-decoration:none;font-size:.95rem}
.person a:hover{color:var(--red-text);text-decoration:underline}
.details{margin:28px 0 0;padding:0;list-style:none;display:grid;gap:18px}
.details li{display:grid;grid-template-columns:96px 1fr;gap:12px}
.details dt,.details .lab{font-size:.88rem;color:var(--ink-2)}
.details a{text-decoration:none;border-bottom:1px solid var(--rule)}
.details a:hover{border-bottom-color:var(--red)}
.map{margin-top:32px}
.map .ph{--ar:16/10}

.form{background:var(--surface);border:1px solid var(--rule);padding:clamp(22px,3vw,36px);border-radius:2px;position:relative}
.form h2{font-size:clamp(1.3rem,2.2vw,1.7rem)}
.form>p{margin-top:8px;color:var(--ink-2);font-size:.95rem}
.field{margin-top:20px}
.field label{display:block;font-size:.88rem;font-weight:600;margin-bottom:6px;font-stretch:104%}
.field input,.field select,.field textarea{
  width:100%;font:inherit;font-size:1rem;color:var(--ink);background:var(--paper);
  border:1px solid var(--rule);border-radius:2px;padding:.75rem .85rem;
}
.field textarea{min-height:130px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--red);outline-offset:1px;border-color:var(--red)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:560px){.row2{grid-template-columns:1fr}}
.form .btn{margin-top:24px}
.status{margin-top:14px;font-size:.9rem;color:var(--ink-2);min-height:1.4em}
@media (max-width:900px){.contact-grid{grid-template-columns:1fr}}

/* ------------------------------------------------------------------
   Footer
------------------------------------------------------------------- */
.site-footer{border-top:1px solid var(--rule);padding-block:clamp(40px,5vw,64px) 28px}
.foot-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:32px 48px}
.site-footer h4{margin:0 0 12px;font-size:.9rem;font-weight:700;font-stretch:108%}
.site-footer ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.site-footer a{text-decoration:none;color:var(--ink-2);font-size:.95rem}
.site-footer a:hover{color:var(--ink);text-decoration:underline}
.site-footer address{font-style:normal;color:var(--ink-2);font-size:.95rem;line-height:1.55}
.foot-brand p{margin-top:16px;color:var(--ink-2);font-size:.95rem;max-width:34ch}
.copy{margin-top:40px;padding-top:20px;border-top:1px solid var(--rule);font-size:.85rem;color:var(--ink-2)}
@media (max-width:760px){.foot-grid{grid-template-columns:1fr}}

/* Tiles without a photo yet: quiet fallback showing the project type */
.ph-in.quiet{gap:0}
.ph-in.quiet strong{font-size:clamp(.95rem,1.4vw,1.15rem);font-weight:700;font-stretch:118%;color:var(--ink-2);letter-spacing:-.01em}
.map-btn{margin-top:28px}