/* ==========================================================================
   RegenX.eco — site stylesheet

   Light palette. Every foreground/background pair below was checked against
   WCAG AA (4.5:1 for body text, 3:1 for large text and UI borders) rather than
   chosen by eye — the values in the token block are the ones that passed.
   ========================================================================== */

:root{
  /* Surfaces */
  --paper:     #FBFBF8;   /* page */
  --surface:   #FFFFFF;   /* cards, panels */
  --surface-2: #F2F4EE;   /* alternating sections */
  --surface-3: #E9EDE1;   /* deeper tint, stat wells */
  --footer:    #EDF0E7;

  /* Rules and hairlines */
  --line:    rgba(17,22,27,.14);
  --line-2:  rgba(17,22,27,.085);
  --line-3:  rgba(17,22,27,.045);

  /* Brand */
  --brand:      #76AD41;   /* sampled from the RegenX.eco wordmark — fills only */
  --brand-ink:  #4A7526;   /* brand as TEXT on light: 5.2:1 on paper */
  --brand-deep: #3C611E;
  --on-brand:   #10240A;   /* text on a brand fill: 6.1:1 */
  --brand-wash: #F1F7E8;
  --brand-edge: rgba(118,173,65,.42);

  /* Secondary accents, darkened for legibility on light */
  --water:      #17708A;
  --water-wash: #ECF5F8;
  --water-edge: rgba(23,112,138,.28);
  --amber:      #8A5E0E;
  --amber-wash: #FBF4E4;
  --amber-edge: rgba(138,94,14,.28);

  /* Text */
  --ink:    #11161B;
  --text:   #1F272E;
  --text-2: #46525D;
  --muted:  #5F6B77;
  --faint:  #6E7A86;

  /* Type */
  --display: "Urbanist", "Trebuchet MS", system-ui, sans-serif;
  --body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Rhythm */
  --gutter: clamp(20px, 5vw, 48px);
  --section: clamp(72px, 11vw, 140px);
  --radius: 14px;
  --radius-sm: 9px;

  --maxw: 1220px;
  --narrow: 880px;

  --shadow-sm: 0 1px 2px rgba(17,22,27,.05), 0 2px 8px rgba(17,22,27,.04);
  --shadow-md: 0 2px 4px rgba(17,22,27,.05), 0 12px 28px rgba(17,22,27,.07);

  --ease: cubic-bezier(.22,.61,.36,1);
}

/* ---------- reset ---------- */
*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){ html{ scroll-behavior:auto; } }

body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--body);
  font-size:16.5px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img,svg,video{ max-width:100%; height:auto; display:block; }
a{ color:inherit; }
button{ font:inherit; color:inherit; }
::selection{ background:var(--brand); color:var(--on-brand); }

:focus-visible{
  outline:2px solid var(--brand-deep);
  outline-offset:3px;
  border-radius:4px;
}

/* ---------- layout ---------- */
.wrap{ width:100%; max-width:var(--maxw); margin-inline:auto; padding-inline:var(--gutter); }
.narrow{ max-width:var(--narrow); }
.section{ padding-block:var(--section); position:relative; }
.section--tight{ padding-block:clamp(52px,7vw,88px); }
.section--alt{
  background:var(--surface-2);
  border-block:1px solid var(--line-3);
}

.hairline{ height:1px; background:linear-gradient(90deg,transparent,var(--line),transparent); border:0; margin:0; }

/* ---------- typography ---------- */
h1,h2,h3,h4{ font-family:var(--display); font-weight:700; line-height:1.08; letter-spacing:-.02em; margin:0 0 .5em; color:var(--ink); }

.display{ font-size:clamp(2.6rem, 6.4vw, 4.6rem); line-height:1.02; letter-spacing:-.033em; }
.h1{ font-size:clamp(2.1rem, 4.6vw, 3.4rem); letter-spacing:-.028em; }
.h2{ font-size:clamp(1.75rem, 3.3vw, 2.6rem); letter-spacing:-.024em; }
.h3{ font-size:clamp(1.18rem, 1.9vw, 1.45rem); letter-spacing:-.015em; line-height:1.25; }
.h4{ font-size:1.02rem; letter-spacing:-.008em; }

.lede{ font-size:clamp(1.06rem,1.55vw,1.28rem); line-height:1.62; color:var(--text-2); max-width:62ch; }
.muted{ color:var(--muted); }
.small{ font-size:.875rem; line-height:1.6; }
.xsmall{ font-size:.79rem; line-height:1.55; }

p{ margin:0 0 1.1em; max-width:74ch; }
p:last-child{ margin-bottom:0; }

.eyebrow{
  font-family:var(--mono);
  font-size:.705rem;
  font-weight:500;
  letter-spacing:.20em;
  text-transform:uppercase;
  color:var(--brand-ink);
  display:flex; align-items:center; gap:.7rem;
  margin:0 0 1.15rem;
}
.eyebrow::before{
  content:""; width:26px; height:1px; background:var(--brand); flex:none;
}
.eyebrow--plain::before{ display:none; }
@media (max-width:430px){ .eyebrow{ font-size:.655rem; letter-spacing:.155em; } }

.idx{ font-family:var(--mono); font-size:.7rem; letter-spacing:.18em; color:var(--muted); }

.accent{ color:var(--brand-ink); }
.accent-lime{ color:var(--brand-deep); }
mark{ background:var(--brand-wash); color:var(--brand-deep); font-weight:600; padding:0 .15em; }

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:.6rem;
  padding:.82rem 1.35rem;
  border-radius:100px;
  border:1px solid var(--line);
  font-family:var(--display);
  font-weight:600;
  font-size:.945rem;
  letter-spacing:-.01em;
  text-decoration:none;
  cursor:pointer;
  background:transparent;
  transition:background .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease),
             transform .25s var(--ease), box-shadow .25s var(--ease);
}
.btn:hover{ transform:translateY(-1px); }
.btn svg{ width:15px; height:15px; flex:none; transition:transform .25s var(--ease); }
.btn:hover svg{ transform:translateX(3px); }

.btn-primary{
  background:var(--brand); border-color:var(--brand); color:var(--on-brand);
  box-shadow:0 1px 2px rgba(60,97,30,.18), 0 6px 16px rgba(60,97,30,.14);
}
.btn-primary:hover{
  background:#6BA138; border-color:#6BA138;
  box-shadow:0 2px 4px rgba(60,97,30,.2), 0 10px 22px rgba(60,97,30,.18);
}

.btn-ghost{ color:var(--ink); border-color:var(--line); background:var(--surface); }
.btn-ghost:hover{ border-color:var(--brand); color:var(--brand-deep); background:var(--brand-wash); }

.btn-row{ display:flex; flex-wrap:wrap; gap:.75rem; margin-top:2rem; }

.txtlink{
  display:inline-flex; align-items:center; gap:.45rem;
  font-family:var(--display); font-weight:600; font-size:.93rem;
  color:var(--brand-ink); text-decoration:none;
  border-bottom:1px solid rgba(74,117,38,.35);
  padding-bottom:2px;
  transition:border-color .22s var(--ease), color .22s var(--ease);
}
.txtlink:hover{ border-color:var(--brand-deep); color:var(--brand-deep); }
.txtlink svg{ width:13px; height:13px; transition:transform .22s var(--ease); }
.txtlink:hover svg{ transform:translateX(3px); }

/* ---------- header ---------- */
.site-header{
  position:fixed; inset:0 0 auto 0; z-index:100;
  transition:background .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-stuck{
  background:rgba(251,251,248,.86);
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  border-bottom-color:var(--line-2);
  box-shadow:0 1px 14px rgba(17,22,27,.05);
}
.header-inner{ display:flex; align-items:center; justify-content:space-between; gap:1.5rem; height:76px; }

.brand{ display:flex; align-items:center; gap:.7rem; text-decoration:none; flex:none; }
.brand img{ height:31px; width:auto; }
.brand:hover img{ opacity:.82; }

.nav{ display:flex; align-items:center; gap:2rem; }
.nav a{
  text-decoration:none; font-size:.925rem; font-weight:500; color:var(--text-2);
  position:relative; padding-block:.35rem;
  transition:color .22s var(--ease);
}
.nav a::after{
  content:""; position:absolute; left:0; right:0; bottom:0; height:2px;
  background:var(--brand); transform:scaleX(0); transform-origin:left;
  transition:transform .28s var(--ease);
}
.nav a:hover{ color:var(--ink); }
.nav a:hover::after, .nav a[aria-current="page"]::after{ transform:scaleX(1); }
.nav a[aria-current="page"]{ color:var(--ink); font-weight:600; }

.header-cta{ display:inline-flex; }

.burger{
  display:none; background:var(--surface); border:1px solid var(--line);
  border-radius:9px; width:42px; height:42px; cursor:pointer;
  align-items:center; justify-content:center; flex:none;
}
.burger span{ display:block; width:17px; height:1.5px; background:var(--ink); position:relative; transition:background .2s; }
.burger span::before,.burger span::after{
  content:""; position:absolute; left:0; width:17px; height:1.5px; background:var(--ink);
  transition:transform .3s var(--ease), top .25s var(--ease);
}
.burger span::before{ top:-5.5px; }
.burger span::after{ top:5.5px; }
.burger[aria-expanded="true"] span{ background:transparent; }
.burger[aria-expanded="true"] span::before{ top:0; transform:rotate(45deg); }
.burger[aria-expanded="true"] span::after{ top:0; transform:rotate(-45deg); }

.drawer{
  position:fixed; inset:76px 0 auto 0; z-index:99;
  background:rgba(251,251,248,.985);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
  box-shadow:0 12px 28px rgba(17,22,27,.09);
  display:none; flex-direction:column;
  padding:1.1rem var(--gutter) 1.9rem;
  max-height:calc(100dvh - 76px); overflow-y:auto;
}
.drawer.is-open{ display:flex; animation:drawerIn .28s var(--ease); }
@keyframes drawerIn{ from{ opacity:0; transform:translateY(-8px);} to{ opacity:1; transform:none; } }
.drawer a{
  text-decoration:none; font-family:var(--display); font-weight:600;
  font-size:1.16rem; padding:.86rem 0; border-bottom:1px solid var(--line-2);
  color:var(--text);
}
.drawer a:hover, .drawer a[aria-current="page"]{ color:var(--brand-deep); }
.drawer .btn{ margin-top:1.4rem; justify-content:center; }

@media (max-width:980px){
  .nav, .header-cta{ display:none; }
  .burger{ display:flex; }
}

/* ---------- hero ---------- */
.hero{
  position:relative;
  min-height:min(100svh, 940px);
  display:flex; align-items:center;
  padding-block:clamp(130px,17vh,180px) clamp(70px,10vh,110px);
  overflow:hidden;
  border-bottom:1px solid var(--line-3);
  background:
    radial-gradient(120% 90% at 78% 8%, #F4F8EC 0%, rgba(244,248,236,0) 58%),
    linear-gradient(180deg, #FDFDFB 0%, var(--paper) 62%);
}
.hero__canvas{
  position:absolute; inset:0; width:100%; height:100%;
  z-index:0; opacity:.9;
  mask-image:radial-gradient(120% 90% at 72% 42%, #000 18%, transparent 78%);
  -webkit-mask-image:radial-gradient(120% 90% at 72% 42%, #000 18%, transparent 78%);
}
.hero__grid{
  position:absolute; inset:0; z-index:0; pointer-events:none;
  background-image:
    linear-gradient(to right, rgba(17,22,27,.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(17,22,27,.035) 1px, transparent 1px);
  background-size:78px 78px;
  mask-image:radial-gradient(100% 80% at 50% 40%, #000, transparent 75%);
  -webkit-mask-image:radial-gradient(100% 80% at 50% 40%, #000, transparent 75%);
}
.hero__glow{
  position:absolute; z-index:0; pointer-events:none;
  width:min(900px,95vw); aspect-ratio:1; border-radius:50%;
  right:-14%; top:-22%;
  background:radial-gradient(circle, rgba(118,173,65,.16) 0%, rgba(23,112,138,.05) 44%, transparent 68%);
  filter:blur(22px);
}
.hero__inner{ position:relative; z-index:2; width:100%; }
.hero h1{ max-width:16ch; margin-bottom:1.5rem; }
.hero .lede{ max-width:56ch; }

.hero__meta{
  display:flex; flex-wrap:wrap; gap:.55rem 1.6rem;
  margin-top:2.6rem; padding-top:1.5rem;
  border-top:1px solid var(--line-2);
  font-family:var(--mono); font-size:.715rem; letter-spacing:.1em;
  text-transform:uppercase; color:var(--muted);
}
.hero__meta span{ display:inline-flex; align-items:center; gap:.5rem; }
.hero__meta span::before{ content:""; width:4px; height:4px; border-radius:50%; background:var(--brand); flex:none; }

.scroll-hint{
  position:absolute; left:var(--gutter); bottom:26px; z-index:2;
  font-family:var(--mono); font-size:.66rem; letter-spacing:.2em; text-transform:uppercase;
  color:var(--faint); display:flex; align-items:center; gap:.65rem;
}
.scroll-hint::after{
  content:""; width:1px; height:26px;
  background:linear-gradient(180deg,var(--brand),transparent);
  animation:hint 2.4s var(--ease) infinite;
}
@keyframes hint{ 0%,100%{ opacity:.3; transform:scaleY(.5); transform-origin:top; } 50%{ opacity:1; transform:scaleY(1); } }
@media (max-width:640px){ .scroll-hint{ display:none; } }

/* page hero (interior pages) */
.pagehero{
  position:relative; overflow:hidden;
  padding-block:clamp(128px,17vh,172px) clamp(46px,6vw,72px);
  border-bottom:1px solid var(--line-2);
  background:linear-gradient(180deg, #F5F8EF 0%, var(--paper) 100%);
}
.pagehero::after{
  content:""; position:absolute; inset:0; pointer-events:none;
  background:
    radial-gradient(70% 120% at 88% 0%, rgba(118,173,65,.14), transparent 62%),
    linear-gradient(to right, rgba(17,22,27,.028) 1px, transparent 1px) 0 0/72px 72px,
    linear-gradient(to bottom, rgba(17,22,27,.028) 1px, transparent 1px) 0 0/72px 72px;
  mask-image:linear-gradient(180deg,#000,transparent);
  -webkit-mask-image:linear-gradient(180deg,#000,transparent);
}
.pagehero > *{ position:relative; z-index:1; }
.pagehero .lede{ margin-top:1.1rem; }

/* ---------- stats ---------- */
.stat-grid{
  display:grid; gap:1px;
  grid-template-columns:repeat(auto-fit,minmax(190px,1fr));
  background:var(--line-2);
  border:1px solid var(--line-2);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
}
.stat{ background:var(--surface); padding:1.6rem 1.4rem; }
.stat__num{
  font-family:var(--display); font-weight:700;
  font-size:clamp(1.85rem,3.1vw,2.5rem); line-height:1;
  letter-spacing:-.03em; color:var(--ink);
  display:flex; align-items:baseline; gap:.14em;
}
.stat__num .unit{ font-size:.46em; font-weight:600; color:var(--brand-ink); letter-spacing:0; }
.stat__label{
  margin-top:.7rem; font-size:.795rem; line-height:1.5; color:var(--muted);
  max-width:24ch;
}

/* ---------- cards ---------- */
.grid{ display:grid; gap:clamp(16px,2vw,22px); }
/* Explicit column counts, not auto-fit: auto-fit silently promotes a two-up
   card row to three-up on a wide viewport and orphans the fourth card. */
.grid-2{ grid-template-columns:repeat(2,minmax(0,1fr)); }
.grid-3{ grid-template-columns:repeat(3,minmax(0,1fr)); }
.grid-4{ grid-template-columns:repeat(4,minmax(0,1fr)); }
@media (max-width:1040px){ .grid-4{ grid-template-columns:repeat(2,minmax(0,1fr)); } }
@media (max-width:920px){ .grid-3{ grid-template-columns:repeat(2,minmax(0,1fr)); } }
@media (max-width:760px){ .grid-2,.grid-3{ grid-template-columns:1fr; } }
@media (max-width:560px){ .grid-4{ grid-template-columns:1fr; } }

.card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line-2);
  border-radius:var(--radius);
  padding:1.7rem 1.55rem;
  box-shadow:var(--shadow-sm);
  transition:border-color .3s var(--ease), transform .3s var(--ease), box-shadow .3s var(--ease);
  overflow:hidden;
}
.card::before{
  content:""; position:absolute; left:0; top:0; height:3px; width:100%;
  background:linear-gradient(90deg,var(--brand),rgba(118,173,65,0));
  transform:scaleX(0); transform-origin:left;
  transition:transform .45s var(--ease);
}
.card:hover{ border-color:var(--brand-edge); transform:translateY(-3px); box-shadow:var(--shadow-md); }
.card:hover::before{ transform:scaleX(1); }
.card .h3{ margin-bottom:.6rem; }
.card p{ color:var(--text-2); font-size:.92rem; }

.card__idx{
  font-family:var(--mono); font-size:.68rem; letter-spacing:.17em;
  color:var(--muted); display:block; margin-bottom:1.1rem;
}

/* case study card */
.case{
  display:flex; flex-direction:column;
  text-decoration:none; color:inherit;
  min-height:100%;
}
.case__media{
  position:relative; aspect-ratio:16/9; border-radius:var(--radius-sm);
  overflow:hidden; margin:-.25rem 0 1.35rem;
  background:var(--surface-3);
  border:1px solid var(--line-2);
}
.case__media img{ width:100%; height:100%; object-fit:cover; }
.case__tags{ display:flex; flex-wrap:wrap; gap:.4rem; margin-bottom:.95rem; }
.tag{
  font-family:var(--mono); font-size:.655rem; letter-spacing:.13em; text-transform:uppercase;
  padding:.3rem .6rem; border-radius:5px;
  border:1px solid var(--line); color:var(--muted);
  background:var(--paper);
  white-space:nowrap;
}
.tag--brand{ border-color:var(--brand-edge); color:var(--brand-ink); background:var(--brand-wash); }
.tag--water{ border-color:var(--water-edge); color:var(--water); background:var(--water-wash); }
.tag--amber{ border-color:var(--amber-edge); color:var(--amber); background:var(--amber-wash); }
.case__foot{ margin-top:auto; padding-top:1.2rem; display:flex; align-items:center; gap:.45rem;
  font-family:var(--display); font-weight:600; font-size:.88rem; color:var(--brand-ink); }
.case__foot svg{ width:13px; height:13px; transition:transform .25s var(--ease); }
.case:hover .case__foot svg{ transform:translateX(4px); }

/* ---------- panels ---------- */
.panel{
  background:var(--surface);
  border:1px solid var(--line-2);
  border-radius:var(--radius);
  padding:clamp(1.5rem,3vw,2.2rem);
  box-shadow:var(--shadow-sm);
}
.panel--brand{ border-color:var(--brand-edge); background:var(--brand-wash); }
.panel--amber{ border-color:var(--amber-edge); background:var(--amber-wash); }
.panel--water{ border-color:var(--water-edge); background:var(--water-wash); }

.panel__label{
  font-family:var(--mono); font-size:.68rem; letter-spacing:.16em; text-transform:uppercase;
  color:var(--brand-ink); margin-bottom:.95rem; display:block;
}
.panel--amber .panel__label{ color:var(--amber); }
.panel--water .panel__label{ color:var(--water); }

/* ---------- lists ---------- */
.ticks{ list-style:none; margin:0; padding:0; display:grid; gap:.85rem; }
.ticks li{ position:relative; padding-left:1.7rem; color:var(--text-2); font-size:.93rem; line-height:1.58; }
.ticks li::before{
  content:""; position:absolute; left:0; top:.55em;
  width:8px; height:8px; border-radius:2px;
  background:var(--brand);
}
.ticks--amber li::before{ background:var(--amber); }
.ticks--water li::before{ background:var(--water); }
.ticks strong{ color:var(--ink); font-weight:600; }

.dl{ display:grid; gap:0; margin:0; }
.dl__row{
  display:grid; grid-template-columns:minmax(0,1fr) auto; gap:1.5rem;
  padding:.92rem 0; border-bottom:1px solid var(--line-2); align-items:baseline;
}
.dl__row:last-child{ border-bottom:0; }
.dl__k{ color:var(--text-2); font-size:.92rem; }
.dl__v{ font-family:var(--display); font-weight:700; font-size:1.06rem; letter-spacing:-.01em; color:var(--ink); text-align:right; }
.dl__v em{ font-style:normal; color:var(--brand-ink); }

/* steps */
.steps{ counter-reset:step; display:grid; gap:1px; background:var(--line-2); border:1px solid var(--line-2);
  border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow-sm); }
.step{ background:var(--surface); padding:1.5rem 1.5rem 1.6rem; position:relative; }
.step__n{
  font-family:var(--mono); font-size:.68rem; letter-spacing:.16em; color:var(--brand-ink);
  display:block; margin-bottom:.85rem;
}
.step h3{ margin-bottom:.5rem; }
.step p{ color:var(--text-2); font-size:.905rem; }

/* ---------- tables ---------- */
.tablewrap{ overflow-x:auto; border:1px solid var(--line-2); border-radius:var(--radius);
  background:var(--surface); box-shadow:var(--shadow-sm); -webkit-overflow-scrolling:touch; }
table{ width:100%; border-collapse:collapse; font-size:.895rem; min-width:520px; }
thead th{
  text-align:left; font-family:var(--mono); font-weight:500;
  font-size:.68rem; letter-spacing:.14em; text-transform:uppercase; color:var(--muted);
  padding:.95rem 1.1rem; background:var(--surface-2); border-bottom:1px solid var(--line-2);
  white-space:nowrap;
}
tbody td{ padding:.9rem 1.1rem; border-bottom:1px solid var(--line-2); color:var(--text-2); vertical-align:top; }
tbody tr:last-child td{ border-bottom:0; }
tbody tr:hover td{ background:var(--brand-wash); }
td strong{ color:var(--ink); font-weight:600; }
td .num{ font-family:var(--display); font-weight:700; color:var(--ink); letter-spacing:-.01em; }

/* ---------- team ---------- */
.person{
  display:flex; flex-direction:column; gap:1.25rem;
  background:var(--surface);
  border:1px solid var(--line-2); border-radius:var(--radius);
  padding:1.9rem 1.7rem;
  box-shadow:var(--shadow-sm);
  transition:border-color .3s var(--ease), transform .3s var(--ease), box-shadow .3s var(--ease);
}
.person:hover{ border-color:var(--brand-edge); transform:translateY(-3px); box-shadow:var(--shadow-md); }
/* Let each card take its own height: a card without a biography should look
   deliberately short, not like one with a hole in it. */
.team-grid{ align-items:start; }
.avatar{
  width:64px; height:64px; border-radius:50%;
  display:grid; place-items:center; flex:none;
  font-family:var(--display); font-weight:700; font-size:1.42rem; letter-spacing:-.02em;
  color:var(--brand-deep);
  background:var(--brand-wash);
  border:1px solid var(--brand-edge);
}
.person__name{ font-family:var(--display); font-weight:700; font-size:1.22rem; letter-spacing:-.018em; margin:0 0 .2rem; color:var(--ink); }
.person__role{ font-family:var(--mono); font-size:.695rem; letter-spacing:.14em; text-transform:uppercase; color:var(--brand-ink); }
.person__links{ display:flex; flex-wrap:wrap; gap:.5rem; margin-top:auto; padding-top:.4rem; }
.chip{
  display:inline-flex; align-items:center; gap:.45rem;
  font-size:.8rem; text-decoration:none; color:var(--text-2);
  border:1px solid var(--line); border-radius:100px; padding:.42rem .85rem;
  background:var(--paper);
  transition:border-color .22s var(--ease), color .22s var(--ease), background .22s var(--ease);
  word-break:break-all;
}
.chip:hover{ border-color:var(--brand); color:var(--brand-deep); background:var(--brand-wash); }
.chip svg{ width:13px; height:13px; flex:none; }

/* ---------- CTA band ---------- */
.cta{
  position:relative; overflow:hidden;
  border:1px solid var(--brand-edge);
  border-radius:calc(var(--radius) + 4px);
  padding:clamp(2.2rem,5vw,3.6rem);
  background:linear-gradient(135deg, #F2F8E8 0%, #FFFFFF 58%, #EDF5F7 100%);
  box-shadow:var(--shadow-sm);
}
.cta::after{
  content:""; position:absolute; inset:0; pointer-events:none;
  background-image:
    linear-gradient(to right, rgba(17,22,27,.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(17,22,27,.03) 1px, transparent 1px);
  background-size:52px 52px;
  mask-image:radial-gradient(80% 100% at 80% 20%, #000, transparent 72%);
  -webkit-mask-image:radial-gradient(80% 100% at 80% 20%, #000, transparent 72%);
}
.cta > *{ position:relative; z-index:1; }

/* ---------- footer ---------- */
.site-footer{ border-top:1px solid var(--line-2); background:var(--footer); padding-block:clamp(48px,6vw,72px) 32px; }
.footer-grid{ display:grid; gap:2.6rem; grid-template-columns:minmax(0,1.5fr) repeat(auto-fit,minmax(150px,1fr)); }
.footer-col h2{ font-family:var(--mono); font-size:.68rem; font-weight:500; letter-spacing:.16em;
  text-transform:uppercase; color:var(--muted); margin:0 0 1.1rem; }
.footer-col ul{ list-style:none; margin:0; padding:0; display:grid; gap:.68rem; }
.footer-col a{ text-decoration:none; color:var(--text-2); font-size:.89rem; transition:color .2s var(--ease); }
.footer-col a:hover{ color:var(--brand-deep); }
.footer-brand img{ height:29px; margin-bottom:1.1rem; }
.footer-brand p{ font-size:.875rem; color:var(--muted); max-width:36ch; }
.footer-bottom{
  margin-top:3rem; padding-top:1.5rem; border-top:1px solid var(--line-2);
  display:flex; flex-wrap:wrap; gap:.8rem 1.6rem; justify-content:space-between;
  font-size:.79rem; color:var(--muted);
}
.footer-bottom a{ color:var(--muted); text-decoration:none; }
.footer-bottom a:hover{ color:var(--ink); }

address{ font-style:normal; font-size:.875rem; color:var(--muted); line-height:1.7; }

/* ---------- forms ---------- */
.field{ display:grid; gap:.5rem; margin-bottom:1.15rem; }
.field label{ font-family:var(--mono); font-size:.68rem; letter-spacing:.14em; text-transform:uppercase; color:var(--muted); }
.field input, .field textarea, .field select{
  width:100%; padding:.82rem 1rem;
  background:var(--surface);
  border:1px solid var(--line); border-radius:var(--radius-sm);
  color:var(--text); font-family:var(--body); font-size:.95rem;
  transition:border-color .22s var(--ease), box-shadow .22s var(--ease);
}
.field textarea{ min-height:145px; resize:vertical; }
.field input:focus, .field textarea:focus, .field select:focus{
  outline:none; border-color:var(--brand); box-shadow:0 0 0 3px rgba(118,173,65,.18);
}
/* --muted (5.4:1 on white), not --faint: placeholder text is often the only
   hint of the expected format, so it is treated as real content here. */
.field input::placeholder, .field textarea::placeholder{ color:var(--muted); opacity:1; }

/* ---------- reveal ---------- */
.reveal{ opacity:0; transform:translateY(20px); transition:opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-in{ opacity:1; transform:none; }
@media (prefers-reduced-motion: reduce){
  .reveal{ opacity:1; transform:none; transition:none; }
  .scroll-hint::after{ animation:none; }
}

/* ---------- utilities ---------- */
.mt-0{ margin-top:0; } .mt-1{ margin-top:.85rem; } .mt-2{ margin-top:1.6rem; }
.mt-3{ margin-top:2.4rem; } .mt-4{ margin-top:3.2rem; } .mt-5{ margin-top:4.2rem; }
.mb-2{ margin-bottom:1.6rem; } .mb-3{ margin-bottom:2.4rem; } .mb-4{ margin-bottom:3.2rem; }
.center{ text-align:center; } .center .lede, .center p{ margin-inline:auto; }
.center .eyebrow{ justify-content:center; }
.maxw-60{ max-width:60ch; } .maxw-52{ max-width:52ch; }

.split{ display:grid; gap:clamp(28px,4.5vw,64px); grid-template-columns:minmax(0,1fr) minmax(0,1fr); align-items:start; }
.split--sticky > :first-child{ position:sticky; top:104px; }
@media (max-width:900px){
  .split{ grid-template-columns:1fr; }
  .split--sticky > :first-child{ position:static; }
}

.sr-only{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px;
  overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap; border:0;
}
.skip{
  position:absolute; left:-9999px; top:0; z-index:200;
  background:var(--brand); color:var(--on-brand); padding:.7rem 1.1rem; border-radius:0 0 8px 0;
  font-weight:600; text-decoration:none;
}
.skip:focus{ left:0; }

/* ---------- case-study specifics ---------- */
.coords{ display:flex; flex-wrap:wrap; gap:.5rem .4rem; margin-top:1.8rem; }
.coords span{
  font-family:var(--mono); font-size:.7rem; letter-spacing:.06em;
  padding:.4rem .75rem; border:1px solid var(--line); border-radius:6px;
  color:var(--text-2); background:var(--surface);
}
.coords span b{ color:var(--brand-ink); font-weight:500; }

.finding{
  border-left:3px solid var(--brand);
  padding:.2rem 0 .2rem 1.35rem;
  margin:1.9rem 0;
}
.finding p{ font-family:var(--display); font-weight:600; font-size:clamp(1.1rem,1.9vw,1.36rem);
  line-height:1.4; letter-spacing:-.018em; color:var(--ink); }
.finding--amber{ border-left-color:var(--amber); }

.prose h2{ margin-top:3.2rem; }
.prose h3{ margin-top:2.2rem; }
.prose > :first-child{ margin-top:0; }
.prose ul{ padding-left:1.15rem; color:var(--text-2); }
.prose li{ margin-bottom:.55rem; }
.prose strong{ color:var(--ink); }

.note{
  font-size:.83rem; color:var(--muted); line-height:1.6;
  border-top:1px solid var(--line-2); padding-top:1.1rem; margin-top:2rem;
}

/* index-page case list */
.caselist{ display:grid; gap:1px; background:var(--line-2); border:1px solid var(--line-2);
  border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow-sm); }
.caserow{
  background:var(--surface); padding:1.6rem clamp(1.1rem,2.2vw,1.8rem);
  display:grid; grid-template-columns:minmax(0,2.1fr) minmax(0,1.35fr) auto;
  gap:1.5rem; align-items:center; text-decoration:none; color:inherit;
  transition:background .25s var(--ease);
}
.caserow:hover{ background:var(--brand-wash); }
.caserow__t{ font-family:var(--display); font-weight:700; font-size:1.08rem; letter-spacing:-.017em; margin:0 0 .3rem; color:var(--ink); }
.caserow__d{ font-size:.855rem; color:var(--muted); margin:0; }
.caserow__m{ font-size:.855rem; color:var(--text-2); }
.caserow__m b{ color:var(--brand-ink); font-weight:600; }
.caserow__a{ color:var(--faint); transition:color .25s var(--ease), transform .25s var(--ease); }
.caserow:hover .caserow__a{ color:var(--brand-deep); transform:translateX(4px); }
@media (max-width:760px){
  .caserow{ grid-template-columns:1fr; gap:.85rem; }
  .caserow__a{ display:none; }
}

figure img{ box-shadow:var(--shadow-md); }