:root{
    --ink: #1F333D;
    --ridge: #48626F;
    --ridge-soft: #7690A0;
    --ice: #EAF3F8;
    --ice-2: #DCEBF3;
    --sky-top: #EAF3F8;
    --sky-bottom: #9FC3D6;
    --ember: #E8B96B;
    --ember-deep: #C9924A;
    --snow: #FFFFFF;
    --deep: #16242B;
    --deep-2: #1D323C;
    --font-display: Georgia, 'Times New Roman', serif;
    --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  }

  *{ box-sizing: border-box; }
  html{ scroll-behavior: smooth; }
  body{
    margin:0;
    font-family: var(--font-body);
    color: var(--ink);
    background: var(--snow);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }
  img,svg{ display:block; max-width:100%; }
  a{ color: inherit; }

  /* ---------- Accessibility: focus states & skip link ---------- */
  a:focus-visible,
  button:focus-visible,
  .btn:focus-visible{
    outline: 3px solid var(--ember);
    outline-offset: 3px;
    border-radius: 2px;
  }
  .skip-link{
    position: absolute;
    left: 12px;
    top: -60px;
    background: var(--snow);
    color: var(--ink);
    padding: 12px 18px;
    font-family: var(--font-body);
    font-size: .92rem;
    font-weight: 600;
    border-radius: 3px;
    box-shadow: 0 2px 10px rgba(0,0,0,.2);
    z-index: 200;
    transition: top .2s ease;
  }
  .skip-link:focus{
    top: 12px;
  }

  .wrap{ max-width: 1120px; margin: 0 auto; padding: 0 32px; }
  .prose{ max-width: 640px; }
  .center{ text-align:center; margin-left:auto; margin-right:auto; }

  h1,h2,h3{ font-family: var(--font-display); font-weight:700; margin:0; color: var(--ink); }
  p{ margin: 0 0 1.1em; }
  p:last-child{ margin-bottom:0; }

  /* ---------- Nav ---------- */
  .nav{
    position: fixed; top:0; left:0; right:0; z-index: 50;
    display:flex; align-items:center; justify-content:space-between;
    padding: 20px 32px;
    transition: background .35s ease, box-shadow .35s ease, padding .35s ease;
  }
  .nav.solid{
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(6px);
    box-shadow: 0 1px 0 rgba(31,51,61,0.08);
    padding: 12px 32px;
  }
  .brand{ display:flex; align-items:center; gap:10px; text-decoration:none; }
  .brand svg{ width:30px; height:30px; }
  .brand-text{ font-family: var(--font-display); font-weight:700; font-size: 1rem; color: var(--ink); }
  .nav.solid .brand-text, .nav.solid .navlinks a{ color: var(--ink); }
  .navlinks{ display:flex; gap:28px; align-items:center; }
  .navlinks a{
    text-decoration:none; font-size: .92rem; color: var(--ink);
    opacity: .85;
  }
  .navlinks a:hover{ opacity:1; }
  .nav:not(.solid) .brand-text, .nav:not(.solid) .navlinks a{ color: var(--ink); }
  .btn{
    display:inline-block; text-decoration:none; font-family: var(--font-body);
    font-size: .92rem; font-weight:600; padding: 11px 22px; border-radius: 3px;
    border: 1.5px solid var(--ink); color: var(--ink);
    transition: background .25s ease, color .25s ease, border-color .25s ease;
  }
  .btn:hover{ background: var(--ink); color: var(--snow); }
  .btn.filled{ background: var(--ink); color: var(--snow); }
  .btn.filled:hover{ background: var(--deep-2); border-color: var(--deep-2); }
  .btn.on-dark{ border-color: rgba(255,255,255,.7); color: var(--snow); }
  .btn.on-dark:hover{ background: var(--snow); color: var(--ink); }

  @media (max-width: 720px){
    .navlinks a:not(.btn){ display:none; }
  }

  /* ---------- Hero ---------- */
  .hero{
    position: relative;
    min-height: 100vh;
    display:flex; align-items:flex-end;
    overflow:hidden;
    background: linear-gradient(var(--sky-top), var(--sky-bottom));
  }
  .hero-art{
    position:absolute; inset:0; width:100%; height:100%;
  }
  .hero-art svg{ width:100%; height:100%; }
  .hero-scrim{
    position:absolute; inset:0; z-index:1; pointer-events:none;
    background: linear-gradient(to bottom,
      rgba(234,243,248,0) 0%,
      rgba(234,243,248,0) 38%,
      rgba(238,246,250,0.55) 60%,
      rgba(242,248,251,0.88) 76%,
      rgba(242,248,251,0.96) 100%);
  }
  .hero-content{
    position:relative; z-index:2;
    width:100%;
    padding: 0 32px 96px;
    text-align:center;
  }
  .hero-eyebrow{
    font-family: var(--font-body); font-size: .82rem; letter-spacing: .18em;
    color: var(--deep); opacity:.85; margin-bottom: 18px;
    text-shadow: 0 1px 2px rgba(255,255,255,.7), 0 2px 14px rgba(255,255,255,.6);
  }
  .hero h1{
    font-size: clamp(2.4rem, 6vw, 4.4rem);
    line-height: 1.08;
    color: var(--deep);
    max-width: 900px;
    margin: 0 auto 28px;
    letter-spacing: -0.01em;
    text-shadow: 0 0 2px rgba(255,255,255,.85), 0 1px 4px rgba(255,255,255,.8), 0 3px 22px rgba(255,255,255,.6);
  }
  .hero p.lede{
    max-width: 560px; margin: 0 auto 34px; color: var(--ridge); font-size: 1.05rem;
    text-shadow: 0 1px 2px rgba(255,255,255,.6), 0 2px 16px rgba(255,255,255,.55);
  }
  .hero-ctas{ display:flex; gap:16px; justify-content:center; flex-wrap:wrap; }

  .hero-fade-in{ opacity:0; transform: translateY(16px); animation: rise .9s ease forwards; }
  .hero-fade-in.d1{ animation-delay: .15s; }
  .hero-fade-in.d2{ animation-delay: .32s; }
  .hero-fade-in.d3{ animation-delay: .48s; }
  @keyframes rise{ to{ opacity:1; transform:none; } }
  @media (prefers-reduced-motion: reduce){
    .hero-fade-in{ opacity:1; transform:none; animation:none; }
    html{ scroll-behavior:auto; }
  }

  /* ---------- Ridge divider ---------- */
  .ridge-divider{ width:100%; display:block; }
  .ridge-divider.flip{ transform: scaleY(-1); }

  /* ---------- Sections ---------- */
  section{ padding: 108px 0; }
  .section-ice{ background: var(--ice); }
  .section-white{ background: var(--snow); }
  .section-deep{ background: var(--deep); color: var(--ice); }
  .section-deep h2, .section-deep h3{ color: var(--snow); }
  .section-deep p{ color: #C5D6DE; }

  .eyebrow-label{
    font-size: .82rem; color: var(--ridge-soft); margin-bottom: 14px;
    font-weight:600;
  }
  .section-deep .eyebrow-label{ color: var(--ember); }

  h2.section-title{ font-size: clamp(1.9rem, 3.6vw, 2.6rem); margin-bottom: 22px; }

  .purpose-quote{
    font-family: var(--font-display); font-size: clamp(1.3rem, 2.4vw, 1.65rem);
    line-height: 1.55; color: var(--ink); font-style: italic;
  }
  .purpose-sub{ margin-top: 26px; color: var(--ridge); font-size: 1.02rem; }

  /* ---------- Principles ---------- */
  .principle-groups{
    display:grid; grid-template-columns: repeat(3, 1fr); gap: 48px;
    margin-top: 56px;
  }
  @media (max-width: 860px){ .principle-groups{ grid-template-columns: 1fr; gap:40px; } }
  .pgroup-title{
    font-family: var(--font-display); font-style:italic; color: var(--ember);
    font-size: 1.15rem; margin-bottom: 18px; padding-bottom: 14px;
    border-bottom: 1px solid rgba(255,255,255,0.18);
  }
  .pgroup ul{ list-style:none; margin:0; padding:0; }
  .pgroup li{
    padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,0.08);
    font-size: .98rem;
  }
  .pgroup li:last-child{ border-bottom:none; }
  .pgroup li strong{ color: var(--snow); display:block; margin-bottom:3px; font-family: var(--font-display); font-size:1.02rem;}
  .pgroup li span{ color: #A9BFC9; }

  /* ---------- Work areas ---------- */
  .work-list{ margin-top: 48px; }
  .work-row{
    display:grid; grid-template-columns: 220px 1fr; gap: 40px;
    padding: 30px 0; border-top: 1px solid var(--ice-2);
  }
  .work-row:last-child{ border-bottom: 1px solid var(--ice-2); }
  @media (max-width: 700px){ .work-row{ grid-template-columns: 1fr; gap:8px; } }
  .work-name{ font-family: var(--font-display); font-size: 1.2rem; color: var(--ink); }
  .work-desc{ color: var(--ridge); font-size: .98rem; max-width: 560px; }

  /* ---------- Flow diagrams ---------- */
  .flow-block{ margin-top: 26px; }
  .flow-title{ font-family: var(--font-display); font-size: 1.2rem; margin-bottom: 18px; }
  .flow{
    display:flex; flex-wrap:wrap; align-items:center; gap: 10px;
    padding: 22px 26px; background: var(--snow); border: 1px solid var(--ice-2);
    border-left: 3px solid var(--ember-deep);
  }
  .flow-step{ font-weight:600; font-size: .95rem; color: var(--ink); white-space:nowrap; }
  .flow-arrow{ color: var(--ember-deep); font-size: 1rem; }
  .flows-wrap{ display:grid; gap: 32px; margin-top: 48px; }

  /* ---------- Call ---------- */
  .call-tags{
    display:flex; flex-wrap:wrap; gap: 12px 14px; margin-top: 40px;
  }
  .call-tag{
    font-size: .95rem; padding: 9px 16px; border: 1px solid rgba(255,255,255,.28);
    border-radius: 999px; color: var(--ice);
  }
  .call-close{ margin-top: 72px; text-align:center; }
  .call-close .line{ font-family: var(--font-display); font-style:italic; color: #C5D6DE; font-size: 1.15rem; margin-bottom: 8px;}
  .call-close .final{ font-family: var(--font-display); color: var(--snow); font-size: clamp(1.5rem, 3vw, 2.1rem); margin-top: 14px; }

  /* ---------- Get involved ---------- */
  .involve{
    display:grid; grid-template-columns: 1.1fr .9fr; gap: 64px; align-items:start;
  }
  @media (max-width: 800px){ .involve{ grid-template-columns:1fr; gap:40px; } }
  .contact-card{
    background: var(--ice); padding: 36px; border-left: 3px solid var(--ink);
  }
  .contact-card h3{ font-size:1.2rem; margin-bottom: 14px; }
  .contact-card p{ color: var(--ridge); font-size: .96rem; }
  .contact-line{ margin-top:18px; font-size: .96rem; }
  .contact-line strong{ display:inline-block; width: 88px; color: var(--ink); }

  /* ---------- Footer ---------- */
  footer{
    background: var(--deep); color: #8FA6B1; padding: 56px 0 40px;
    font-size: .88rem;
  }
  .footer-top{
    display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:24px;
    padding-bottom: 32px; border-bottom: 1px solid rgba(255,255,255,.12);
    margin-bottom: 28px;
  }
  .footer-brand{ display:flex; align-items:center; gap:12px; }
  .footer-brand svg{ width:28px; height:28px; }
  .footer-brand-text{ font-family: var(--font-display); color: var(--snow); font-size: 1rem; }
  .footer-tagline{ font-style: italic; color: #A9BFC9; }
  .footer-bottom{ display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px; }