/* ==========================================================================
   Insight into Impact: shared design system
   Bold monochrome (black / white / grey) + single gold accent
   ========================================================================== */

:root{
  --ink:#0b0b0b;
  --paper:#ffffff;
  --fog:#eeeeec;
  --mist:#f7f7f6;
  --slate:#6b6b6b;
  --line:#dddddb;
  --gold:#b8842a;
  --gold-light:#f3e6cf;
  --radius:14px;
  --container:1160px;
  --shadow:0 10px 30px rgba(0,0,0,0.08);
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;
  color:var(--ink);
  background:var(--paper);
  line-height:1.6;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  font-family:"Poppins","Inter",sans-serif;
  font-weight:700;
  line-height:1.15;
  margin:0 0 0.5em;
  letter-spacing:-0.01em;
}
h1{ font-size:clamp(2.1rem,4.5vw,3.4rem); }
h2{ font-size:clamp(1.6rem,3vw,2.3rem); }
h3{ font-size:1.3rem; }
p{ margin:0 0 1em; }
a{ color:var(--ink); text-decoration-color:var(--gold); text-underline-offset:3px; }
a:hover{ color:var(--gold); }
ul{ margin:0 0 1em; padding-left:1.2em; }
li{ margin-bottom:0.4em; }
img{ max-width:100%; display:block; }
.container{ max-width:var(--container); margin:0 auto; padding:0 24px; }

/* ---------- sections / bands ---------- */
.band{ padding:72px 0; }
.band-tight{ padding:48px 0; }
.band-dark{ background:var(--ink); color:var(--paper); }
.band-dark h1,.band-dark h2,.band-dark h3{ color:var(--paper); }
.band-dark a{ color:var(--paper); }
.band-dark a:hover{ color:var(--gold); }
.band-fog{ background:var(--fog); }
.band-mist{ background:var(--mist); }
.eyebrow{
  display:inline-block;
  font-size:0.78rem;
  font-weight:700;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--gold);
  margin-bottom:14px;
}
.band-dark .eyebrow{ color:var(--gold); }
.lede{ font-size:1.2rem; color:var(--slate); max-width:640px; }
.band-dark .lede{ color:#cfcfcf; }
.center{ text-align:center; margin-left:auto; margin-right:auto; }

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:14px 26px;
  border-radius:999px;
  font-weight:600;
  font-size:0.98rem;
  text-decoration:none;
  border:2px solid var(--ink);
  background:var(--ink);
  color:var(--paper);
  cursor:pointer;
  transition:transform .15s ease, background .15s ease, color .15s ease, border-color .15s ease;
}
.btn:hover{ background:var(--paper); color:var(--ink); transform:translateY(-1px); }
.btn-ghost{ background:transparent; color:var(--ink); border-color:var(--ink); }
.btn-ghost:hover{ background:var(--ink); color:var(--paper); }
.band-dark .btn{ border-color:var(--paper); background:var(--paper); color:var(--ink); }
.band-dark .btn:hover{ background:transparent; color:var(--paper); }
.band-dark .btn-ghost{ border-color:var(--paper); color:var(--paper); background:transparent; }
.band-dark .btn-ghost:hover{ background:var(--paper); color:var(--ink); }
.btn-gold{ border-color:var(--gold); background:var(--gold); color:var(--ink); }
.btn-gold:hover{ background:transparent; color:var(--gold); }
.btn-row{ display:flex; flex-wrap:wrap; gap:14px; margin-top:28px; }
.btn-small{ padding:9px 18px; font-size:0.85rem; }

/* ---------- header / nav ---------- */
.site-header{
  position:sticky; top:0; z-index:50;
  background:rgba(255,255,255,0.96);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
}
.site-header .container{ display:flex; align-items:center; justify-content:space-between; padding-top:14px; padding-bottom:14px; }
.brand{ display:flex; align-items:center; gap:10px; text-decoration:none; }
.brand img{ height:42px; width:auto; }
.brand span{ font-family:"Poppins",sans-serif; font-weight:700; font-size:1rem; color:var(--ink); }
.nav-links{ display:flex; align-items:center; gap:26px; list-style:none; margin:0; padding:0; }
.nav-links a{
  font-size:0.92rem; font-weight:600; text-decoration:none; color:var(--ink);
  padding:6px 0; border-bottom:2px solid transparent;
}
.nav-links a:hover, .nav-links a.active{ color:var(--ink); border-bottom-color:var(--gold); }
.nav-links a.nav-cta{ background:var(--ink); color:var(--paper)!important; padding:10px 20px!important; border-radius:999px; border-bottom:none!important; line-height:1.2; }
.nav-links a.nav-cta:hover{ background:var(--gold); color:var(--ink)!important; }
.nav-toggle{ display:none; background:none; border:2px solid var(--ink); border-radius:8px; padding:8px 10px; cursor:pointer; }
.nav-toggle span{ display:block; width:20px; height:2px; background:var(--ink); margin:4px 0; }

@media (max-width:900px){
  .nav-links{
    position:absolute; top:100%; left:0; right:0; background:var(--paper);
    flex-direction:column; align-items:flex-start; gap:0; padding:10px 24px 20px;
    border-bottom:1px solid var(--line);
    display:none;
  }
  .nav-links.open{ display:flex; }
  .nav-links li{ width:100%; }
  .nav-links a{ display:block; padding:12px 0; width:100%; }
  .nav-links a.nav-cta{ display:inline-block; width:auto; padding:10px 20px!important; }
  .nav-toggle{ display:inline-block; }
}

/* ---------- footer ---------- */
.site-footer{ background:var(--ink); color:#cfcfcf; padding:56px 0 28px; }
.site-footer a{ color:#cfcfcf; }
.site-footer a:hover{ color:var(--gold); }
.footer-top{ display:flex; flex-wrap:wrap; justify-content:space-between; gap:32px; margin-bottom:36px; }
.footer-brand img{ height:46px; margin-bottom:14px; }
.footer-brand p{ max-width:280px; color:#a5a5a5; font-size:0.92rem; }
.footer-cols{ display:flex; gap:56px; flex-wrap:wrap; }
.footer-col h4{ color:var(--paper); font-size:0.82rem; letter-spacing:0.08em; text-transform:uppercase; margin-bottom:14px; }
.footer-col ul{ list-style:none; padding:0; margin:0; }
.footer-col li{ margin-bottom:9px; }
.footer-col a{ font-size:0.92rem; text-decoration:none; }
.footer-bottom{ border-top:1px solid #2b2b2b; padding-top:22px; display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px; font-size:0.82rem; color:#8a8a8a; }
.social-links{ display:flex; gap:14px; }
.social-links a{ width:36px; height:36px; border:1px solid #3a3a3a; border-radius:50%; display:flex; align-items:center; justify-content:center; }
.social-links a:hover{ border-color:var(--gold); }

/* ---------- hero ---------- */
.hero{ padding:88px 0 64px; }
.hero-split{ display:grid; grid-template-columns:1.15fr 0.85fr; gap:56px; align-items:center; }
@media (max-width:900px){ .hero-split{ grid-template-columns:1fr; } }
.ring-decor{
  width:220px; height:220px; border-radius:50%;
  border:2px solid var(--gold);
  position:relative;
}
.ring-decor::after{
  content:""; position:absolute; inset:22px; border-radius:50%; border:2px solid var(--line);
}

/* ---------- cards / grids ---------- */
.grid{ display:grid; gap:26px; }
.grid-2{ grid-template-columns:repeat(2,1fr); }
.grid-3{ grid-template-columns:repeat(3,1fr); }
.grid-4{ grid-template-columns:repeat(4,1fr); }
@media (max-width:900px){ .grid-2,.grid-3,.grid-4{ grid-template-columns:1fr; } }

.card{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:30px;
  transition:transform .15s ease, box-shadow .15s ease;
}
.card:hover{ transform:translateY(-3px); box-shadow:var(--shadow); }
.card .num{ font-family:"Poppins",sans-serif; font-weight:700; color:var(--gold); font-size:0.85rem; letter-spacing:0.1em; margin-bottom:10px; display:block; }
.card h3{ margin-bottom:10px; }
.card p{ color:var(--slate); margin-bottom:0; }
.card a.card-link{ display:inline-block; margin-top:14px; font-weight:600; font-size:0.92rem; }

.badge{
  display:inline-flex; align-items:center; gap:6px;
  background:var(--gold-light); color:#7a5a1c;
  border-radius:999px; padding:5px 14px; font-size:0.8rem; font-weight:700;
  letter-spacing:0.03em;
}
.band-dark .badge{ background:rgba(184,132,42,0.18); color:var(--gold); }

/* ---------- steps ---------- */
.steps{ counter-reset:step; display:grid; gap:20px; }
.step{
  display:grid; grid-template-columns:56px 1fr; gap:20px; align-items:start;
  padding:22px 0; border-top:1px solid var(--line);
}
.step:first-child{ border-top:none; }
.step-num{
  width:44px; height:44px; border-radius:50%; border:2px solid var(--gold);
  display:flex; align-items:center; justify-content:center;
  font-family:"Poppins",sans-serif; font-weight:700; color:var(--gold);
}
.band-dark .step{ border-top-color:#2b2b2b; }

/* ---------- proof table ---------- */
.proof-table{ width:100%; border-collapse:collapse; margin-top:10px; }
.proof-table th,.proof-table td{ text-align:left; padding:16px 18px; border-bottom:1px solid var(--line); vertical-align:top; }
.proof-table th{ font-family:"Poppins",sans-serif; font-size:0.78rem; letter-spacing:0.08em; text-transform:uppercase; color:var(--slate); }
.proof-table tr:hover td{ background:var(--mist); }
@media (max-width:700px){
  .proof-table thead{ display:none; }
  .proof-table, .proof-table tbody, .proof-table tr, .proof-table td{ display:block; width:100%; }
  .proof-table tr{ border:1px solid var(--line); border-radius:10px; margin-bottom:14px; padding:8px 4px; }
  .proof-table td{ border:none; padding:8px 14px; }
  .proof-table td::before{ content:attr(data-label); display:block; font-weight:700; font-size:0.72rem; letter-spacing:0.06em; text-transform:uppercase; color:var(--gold); margin-bottom:2px; }
}

/* ---------- forms ---------- */
.form-field{ margin-bottom:18px; }
.form-field label{ display:block; font-weight:600; font-size:0.9rem; margin-bottom:6px; }
.form-field input,.form-field select,.form-field textarea{
  width:100%; padding:13px 16px; border:1.5px solid var(--line); border-radius:10px;
  font-family:inherit; font-size:1rem; background:var(--paper); color:var(--ink);
}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  outline:none; border-color:var(--gold);
}
.form-row{ display:grid; grid-template-columns:1fr 1fr; gap:18px; }
@media (max-width:700px){ .form-row{ grid-template-columns:1fr; } }
.form-hint{ font-size:0.82rem; color:var(--slate); margin-top:-10px; margin-bottom:18px; }
.form-note{ font-size:0.85rem; color:var(--slate); margin-top:12px; }
.form-success, .form-error{ display:none; padding:16px 18px; border-radius:10px; margin-bottom:20px; font-weight:600; }
.form-success{ background:#e9f5ec; color:#1e6b34; }
.form-error{ background:#fbe9e7; color:#a33323; }

/* ---------- collapsible (methodology band) ---------- */
.collapsible summary{
  cursor:pointer; list-style:none; font-family:"Poppins",sans-serif; font-weight:700;
  display:flex; align-items:center; gap:10px; font-size:1.05rem;
}
.collapsible summary::-webkit-details-marker{ display:none; }
.collapsible summary::after{
  content:"+"; margin-left:auto; font-size:1.4rem; color:var(--gold); font-weight:400;
}
.collapsible[open] summary::after{ content:"–"; }
.collapsible{ border:1px solid var(--line); border-radius:var(--radius); padding:22px 26px; background:var(--mist); }
.collapsible .collapsible-body{ padding-top:18px; }

.callout{
  border:1.5px solid var(--gold); background:var(--gold-light); border-radius:var(--radius);
  padding:22px 26px; font-weight:600; margin:20px 0;
}
.callout strong{ color:#7a5a1c; }

.divider{ border:none; border-top:1px solid var(--line); margin:0; }
.two-col{ display:grid; grid-template-columns:1fr 1fr; gap:40px; }
@media (max-width:900px){ .two-col{ grid-template-columns:1fr; } }

.tag-list{ display:flex; flex-wrap:wrap; gap:10px; margin-top:16px; }
.tag{ border:1px solid var(--line); border-radius:999px; padding:6px 16px; font-size:0.85rem; font-weight:600; }

.team-card{ text-align:left; }
.team-photo{
  width:100%; aspect-ratio:1/1; border-radius:var(--radius); background:var(--fog);
  display:flex; align-items:center; justify-content:center; color:var(--slate);
  font-size:0.85rem; text-align:center; padding:20px; margin-bottom:18px; border:1px dashed #bdbdbb;
}
.team-photo-img{
  width:100%; aspect-ratio:1/1; border-radius:var(--radius); background:var(--fog);
  object-fit:cover; object-position:center top; margin-bottom:18px;
}
.placeholder-note{ background:var(--gold-light); color:#7a5a1c; border-radius:10px; padding:10px 16px; font-size:0.85rem; margin-top:10px; }

.skip-link{ position:absolute; left:-999px; top:0; background:var(--ink); color:var(--paper); padding:10px 16px; z-index:100; }
.skip-link:focus{ left:10px; top:10px; }