:root{
    color-scheme: light;
    --navy:#0F213B;        /* per Daniel: AAA on white (16.14:1) */
    --navy-2:#0B1A30;
    --gold:#AD7D36;        /* display gold — large/graphical use; safe on navy (4.43:1) */
    --gold-deep:#AD7D36;
    --gold-text:#705223;   /* text gold — small gold text on light backgrounds only (7.19:1 on white) */
    --cream:#FBF8F1;
    --cream-2:#F4EEE1;
    --ink:#222a36;
    --ink-soft:#4a5564;
    --line:#e6ddca;
    --bg:#FBF8F1;          /* page background */
    --surface:#ffffff;     /* cards */
    --panel:#0F213B;       /* sidebar — stays navy in both themes */
    --on-gold:#0F213B;     /* dark text on gold buttons — stays dark in both themes */
    --sidebar-w:282px;
    --serif: Georgia, "Times New Roman", "Iowan Old Style", serif;
    --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  }

  /* ===== DARK MODE (Daniel's dark palette) ===== */
  :root[data-theme="dark"]{
    color-scheme: dark;
    --navy:#66A5FF;        /* blue as headings / links / brand on dark */
    --navy-2:#0B1A30;
    --gold:#DD9500;        /* both golds collapse to one on dark (7:1 on #191919) */
    --gold-deep:#DD9500;
    --gold-text:#DD9500;
    --bg:#191919;          /* field */
    --cream-2:#21262e;     /* dark surface for quote / belief */
    --surface:#1d2128;     /* cards */
    --ink:#ECEAE6;         /* strong text — neutral off-white */
    --ink-soft:#C7C5C0;    /* body text */
    --line:rgba(255,255,255,.14);
  }
  *{box-sizing:border-box;}
  html,body{margin:0;}
  body{
    background:var(--bg);color:var(--ink);font-family:var(--sans);
    line-height:1.6;-webkit-font-smoothing:antialiased;
  }
  .serif{font-family:var(--serif);}

  /* ===== ACCESSIBILITY GUARDRAILS ===== */
  /* visible keyboard focus on every interactive element */
  a:focus-visible, button:focus-visible{
    outline:2px solid var(--gold);outline-offset:3px;border-radius:2px;
  }
  /* skip-to-content link, revealed on focus */
  .skip-link{
    position:absolute;left:8px;top:-48px;z-index:200;
    background:var(--panel);color:var(--cream);padding:10px 16px;border-radius:0 0 4px 4px;
    text-decoration:none;font-size:14px;transition:top .2s;
  }
  .skip-link:focus{top:0;}
  /* honor reduced-motion preferences */
  @media (prefers-reduced-motion: reduce){
    *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
    .page{animation:none;}
  }

  /* ===== BRAND MARK / LOGO ===== */
  .vmark{display:block;}
  .logo-lockup{display:flex;flex-direction:column;gap:14px;margin:0 0 clamp(16px,2.6vh,30px);}
  .logo-lockup .logo-word{
    font-family:var(--serif);font-weight:600;letter-spacing:.15em;color:var(--navy);
    font-size:clamp(38px,6vw,60px);line-height:1;
  }
  .logo-lockup .logo-word .ai{color:var(--gold);}
  .logo-lockup .logo-tag{
    display:flex;align-items:center;gap:14px;font-size:clamp(11px,1.4vw,13px);
    letter-spacing:.26em;text-transform:uppercase;color:var(--navy);
  }
  .logo-lockup .logo-tag .rule{height:1px;width:38px;background:var(--gold);display:inline-block;}
  .overview .vmark{width:clamp(70px,9.5vh,96px);height:auto;color:var(--navy);}
  .sb-brand{display:flex;flex-direction:column;}
  .sb-vmark{width:42px;height:42px;color:var(--cream);margin-bottom:14px;}
  .tb-brand{display:flex;align-items:center;gap:9px;}
  .tb-vmark{width:26px;height:26px;color:var(--cream);}

  /* ===== LAYOUT ===== */
  .app{display:flex;min-height:100vh;}

  /* ===== SIDEBAR ===== */
  .sidebar{
    width:var(--sidebar-w);flex:0 0 var(--sidebar-w);
    background:var(--panel);color:var(--cream);
    position:fixed;top:0;left:0;height:100vh;
    display:flex;flex-direction:column;padding:34px 26px 28px;
    border-right:1px solid rgba(255,255,255,.08);z-index:20;
  }
  .sidebar .wordmark{
    font-family:var(--serif);font-size:27px;letter-spacing:.14em;
    color:var(--cream);font-weight:600;
  }
  .sidebar .wordmark .ai{color:var(--gold);}
  .sidebar .tag{
    font-size:11px;letter-spacing:.18em;text-transform:uppercase;
    color:#9aa6bd;margin-top:8px;
  }
  .side-nav{margin-top:46px;display:flex;flex-direction:column;gap:2px;}
  .side-nav a{
    display:flex;align-items:center;gap:14px;text-decoration:none;
    color:#cdd5e4;font-size:15.5px;padding:13px 14px;border-radius:4px;
    transition:background .18s,color .18s;position:relative;
  }
  .side-nav a .num{
    font-family:var(--serif);font-size:12px;color:var(--gold);letter-spacing:.08em;
    min-width:20px;opacity:.85;
  }
  .side-nav a:hover{background:rgba(255,255,255,.06);color:#fff;}
  .side-nav a.active{background:rgba(173,125,54,.16);color:#fff;}
  .side-nav a.active::before{
    content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
    background:var(--gold);border-radius:0 2px 2px 0;
  }
  .side-foot{margin-top:auto;padding-top:24px;}
  .side-cta{
    display:block;text-align:center;background:var(--gold);color:var(--navy);
    font-size:13px;letter-spacing:.06em;text-transform:uppercase;font-weight:600;
    text-decoration:none;padding:13px;border-radius:3px;transition:background .2s;
    color:var(--on-gold);
  }
  .side-cta:hover{background:#C49245;}
  .side-foot .legal{font-size:11px;color:#7d8aa3;margin-top:16px;letter-spacing:.03em;}
  .theme-toggle{
    appearance:none;cursor:pointer;width:100%;margin-top:14px;
    background:transparent;border:1px solid rgba(255,255,255,.22);
    color:#cdd5e4;font-family:var(--sans);font-size:12.5px;letter-spacing:.06em;
    padding:9px 12px;border-radius:3px;display:flex;align-items:center;justify-content:center;gap:8px;
    transition:background .18s,border-color .18s,color .18s;
  }
  .theme-toggle:hover{background:rgba(255,255,255,.06);color:#fff;border-color:rgba(255,255,255,.4);}
  .theme-toggle .glyph{font-size:14px;line-height:1;}

  /* ===== MAIN / PAGES ===== */
  .main{margin-left:var(--sidebar-w);flex:1;min-width:0;min-height:100vh;display:flex;flex-direction:column;}
  .page{display:none;animation:fade .35s ease;flex:1;}
  .page.active{display:block;}
  .page:focus, .main:focus{outline:none;}
  @keyframes fade{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:none;}}

  .pad{max-width:820px;margin:0 auto;padding:78px 48px;}
  @media(max-width:600px){.pad{padding:48px 26px;}}

  .sec-label{
    font-size:13px;letter-spacing:.22em;text-transform:uppercase;color:var(--gold-text);
    margin:0 0 16px;display:flex;align-items:center;gap:12px;
  }
  .sec-label::before{content:"";width:30px;height:1px;background:var(--gold);display:inline-block;}
  h1{font-family:var(--serif);font-weight:600;color:var(--navy);font-size:clamp(32px,4.6vw,52px);line-height:1.12;margin:0 0 24px;}
  h1 .accent{color:var(--gold);}
  h2{font-family:var(--serif);font-weight:600;color:var(--navy);font-size:clamp(26px,3.6vw,40px);line-height:1.18;margin:0 0 22px;max-width:none;}
  .nb{white-space:nowrap;}
  .body-lg{font-size:18px;color:var(--ink-soft);max-width:74ch;}
  .body-lg strong{color:var(--ink);}
  p{margin:0 0 18px;}

  /* pager (prev / next) */
  .pager{display:flex;justify-content:space-between;gap:14px;border-top:1px solid var(--line);margin-top:8px;padding:26px 0 0;}
  .pager a{
    text-decoration:none;color:var(--navy);font-size:14px;display:flex;flex-direction:column;gap:3px;
    padding:10px 0;transition:color .2s;max-width:46%;
  }
  .pager a.next{text-align:right;margin-left:auto;}
  .pager a .dir{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--gold-text);}
  .pager a .ttl{font-family:var(--serif);font-size:18px;}
  .pager a:hover .ttl{color:var(--gold-text);}
  .pager-wrap{max-width:820px;margin:0 auto;padding:0 48px 60px;}
  @media(max-width:600px){.pager-wrap{padding:0 26px 44px;}}

  /* ===== OVERVIEW PAGE ===== */
  /* Overview is sized to fit one laptop screen without scrolling */
  .overview.active{display:flex;flex-direction:column;}
  .overview .pad{flex:1;padding-top:clamp(24px,4.5vh,52px);padding-bottom:clamp(16px,3vh,32px);display:flex;flex-direction:column;justify-content:center;}
  .overview .eyebrow{margin:0 0 clamp(10px,1.6vh,18px);}
  .overview h1{font-size:clamp(28px,3.9vw,46px);margin:0 0 clamp(12px,1.8vh,20px);}
  .eyebrow{font-size:13px;letter-spacing:.22em;text-transform:uppercase;color:var(--gold-text);margin:0 0 22px;}
  .lede{font-size:clamp(16px,1.9vw,19px);line-height:1.5;color:var(--ink-soft);max-width:74ch;margin:0 0 clamp(16px,2.4vh,28px);}
  .actions{display:flex;flex-wrap:wrap;gap:14px;}
  .btn{font-size:14px;letter-spacing:.06em;text-transform:uppercase;text-decoration:none;padding:13px 24px;border-radius:3px;display:inline-block;transition:.2s;cursor:pointer;border:none;font-family:var(--sans);}
  .btn-gold{background:var(--gold);color:var(--on-gold);font-weight:600;}
  .btn-gold:hover{background:#C49245;}
  .btn-ghost{border:1px solid var(--navy);color:var(--navy);background:none;}
  .btn-ghost:hover{background:var(--navy);color:var(--cream);}
  .quote{
    margin-top:clamp(20px,3.4vh,40px);background:var(--cream-2);border-left:3px solid var(--gold);
    padding:clamp(18px,2.6vh,26px) 26px;border-radius:0 4px 4px 0;
  }
  blockquote{margin:0;font-family:var(--serif);font-size:clamp(16px,1.9vw,20px);line-height:1.38;color:var(--navy);}
  .quote .mk{color:var(--gold);}
  blockquote cite{display:block;margin-top:12px;font-style:normal;font-size:13.5px;letter-spacing:.05em;color:var(--ink-soft);}
  /* hide the bottom pager on Overview so the hero fits the first screen; sidebar + buttons handle nav */
  .overview .pager-wrap{display:none;}

  /* cards */
  .grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:42px;}
  @media(max-width:820px){.grid3{grid-template-columns:1fr;}}
  .card{background:var(--surface);border:1px solid var(--line);border-top:3px solid var(--gold);border-radius:4px;padding:24px 22px;}
  .card h3{font-family:var(--serif);color:var(--navy);font-size:19px;margin:0 0 10px;line-height:1.25;}
  .card p{font-size:15px;color:var(--ink-soft);margin:0;}

  /* pillars — framed boxes */
  .pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:42px;align-items:stretch;}
  @media(max-width:760px){.pillars{grid-template-columns:1fr;}}
  .pillar{
    background:var(--surface);border:1px solid var(--line);border-top:3px solid var(--gold);
    border-radius:4px;padding:24px 22px;display:flex;flex-direction:column;
  }
  .pillar .n{font-family:var(--serif);color:var(--gold-text);font-size:14px;letter-spacing:.1em;}
  .pillar h3{font-family:var(--serif);color:var(--navy);font-size:19px;margin:9px 0 8px;}
  .pillar p{color:var(--ink-soft);font-size:15px;line-height:1.55;margin:0;}
  .pillar .step{font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--gold-text);display:block;margin-bottom:6px;}
  .pillar strong{color:var(--navy);}
  .loop-note{margin-top:20px;font-size:14.5px;color:var(--gold-text);letter-spacing:.02em;display:flex;align-items:center;gap:10px;}
  .loop-note .glyph{font-size:18px;line-height:1;}

  /* opportunity reasons — horizontal boxes (heading visible up top, detail below) */
  .opportunity .pad{max-width:1040px;}
  .opp-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:56px;align-items:stretch;}
  @media(max-width:900px){.opp-grid{grid-template-columns:repeat(2,1fr);}}
  @media(max-width:520px){.opp-grid{grid-template-columns:1fr;}}
  .opp-box{
    background:var(--surface);border:1px solid var(--line);border-top:3px solid var(--gold);
    border-radius:4px;padding:20px 18px;display:flex;flex-direction:column;
  }
  .opp-box h3{font-family:var(--serif);color:var(--navy);font-size:17px;margin:0 0 11px;line-height:1.28;min-height:2.56em;}
  .opp-box p{color:var(--ink-soft);font-size:14.5px;line-height:1.55;margin:0;}
  .belief{background:var(--cream-2);border-left:3px solid var(--gold);padding:28px 32px;border-radius:0 4px 4px 0;margin-top:36px;}
  .belief p{font-family:var(--serif);font-size:clamp(19px,2.3vw,24px);color:var(--navy);margin:0;line-height:1.4;}
  .placeholder{border:1px dashed var(--gold-deep);background:#fffdf6;border-radius:4px;padding:14px 18px;font-size:14px;color:var(--gold-text);margin-top:26px;}
  .placeholder b{color:var(--gold-text);}
  .status{border:1px solid var(--line);background:var(--surface);border-left:3px solid var(--gold);border-radius:0 4px 4px 0;padding:16px 20px;font-size:14.5px;line-height:1.55;color:var(--ink-soft);margin-top:26px;}
  .status b{color:var(--navy);}

  /* engage */
  .engage .pad{text-align:left;}
  .engage h2{margin:0 0 18px;max-width:none;}
  .engage .body-lg{margin:0 0 32px;max-width:74ch;}
  .engage .actions{justify-content:flex-start;}

  /* ===== MOBILE TOPBAR ===== */
  .topbar{display:none;}
  @media(max-width:860px){
    :root{--sidebar-w:0px;}
    .app{flex-direction:column;}
    .sidebar{
      position:fixed;transform:translateX(-100%);width:280px;flex-basis:280px;
      transition:transform .3s cubic-bezier(.22,.61,.36,1);box-shadow:8px 0 32px rgba(0,0,0,.25);
    }
    body.nav-open .sidebar{transform:translateX(0);}
    .main{margin-left:0;}
    .topbar{
      display:flex;align-items:center;justify-content:space-between;
      padding:14px 20px;background:var(--panel);color:var(--cream);
      position:sticky;top:0;z-index:15;
    }
    .topbar .wordmark{font-family:var(--serif);font-size:21px;letter-spacing:.13em;color:var(--cream);}
    .topbar .wordmark .ai{color:var(--gold);}
    .hamburger{appearance:none;background:none;border:none;cursor:pointer;width:40px;height:40px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:6px;padding:0;}
    .hamburger span{display:block;width:24px;height:2px;background:var(--cream);border-radius:2px;transition:transform .28s,opacity .2s;}
    body.nav-open .hamburger span:nth-child(1){transform:translateY(8px) rotate(45deg);}
    body.nav-open .hamburger span:nth-child(2){opacity:0;}
    body.nav-open .hamburger span:nth-child(3){transform:translateY(-8px) rotate(-45deg);}
    .nav-overlay{position:fixed;inset:0;background:rgba(20,30,52,.45);opacity:0;visibility:hidden;transition:opacity .28s;z-index:18;}
    body.nav-open .nav-overlay{opacity:1;visibility:visible;}
    .pad{padding-top:48px;}
  }
  @media(min-width:861px){.nav-overlay{display:none;}}