/* ============================================================
   B-Spec · field.css — the shared spine of the commercial wing
   ("the field": warm paper, field green). Page-specific
   components stay inline in each page; everything here is the
   spine no field page may override: tokens, type, nav, buttons,
   sections, footer, focus.  Counterpart: lab.css (research wing).
   Rules of the system:
   · measured figures are always --mono, tabular
   · radius 6px + top rule = a document · 12–14px = an interface
     · 999px = an action
   · --lab-teal appears in the field only where the research
     programme is speaking (e.g. engine-room notes)
   ============================================================ */
:root{
  color-scheme: light;
  --cream:#FBF6EE; --sand:#F4EBDC; --white:#FFFFFF;
  --ink:#2C2A25; --soft:#5F5B52; --faint:#948E81;
  --rule:rgba(44,42,37,.14); --rule-soft:rgba(44,42,37,.08);
  --green:#1E6B54; --green-deep:#14503E; --green-wash:rgba(30,107,84,.07);
  --lab-teal:#14707E;
  --wa:#25D366; --wa-ink:#0B3D22;
  --chat-bg:#EFE7DB; --bubble-in:#FFFFFF; --bubble-out:#DCF5C8;
  --nav-bg:rgba(251,246,238,.88); --ph-hd:#FFFFFF; --sys-bg:rgba(44,42,37,.07);
  --draft-bg:#FDFBF6; --draft-bd:rgba(30,107,84,.45);
  --qr-hov:#F2FBF0; --sugg-bg:#F2FBF0; --sugg-hov:#E7F7E2;
  --bad:#B4432A; --link:#1264A3; --cohort-bg:#14503E;
  --btn-hov:#14503E; --card-bd:transparent;
  --display:"Inter",-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --body:"Inter",-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,monospace;
  --gut:clamp(20px,4vw,60px); --maxw:1140px;
}
*{box-sizing:border-box;margin:0;padding:0}
img,svg{display:block;max-width:100%}
html{scroll-behavior:smooth}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
section{scroll-margin-top:78px}
/* Warm-dark theme: espresso paper — the version of dark this
   audience already knows from WhatsApp itself. */
:root[data-theme="dark"]{
  color-scheme:dark;
  --cream:#1B1714; --sand:#221C16; --white:#2A241D;
  --ink:#EFE9DD; --soft:#BFB5A5; --faint:#8F8679;
  --rule:rgba(239,233,221,.16); --rule-soft:rgba(239,233,221,.08);
  --green:#2F9173; --green-deep:#7FD3B0; --green-wash:rgba(127,211,176,.1);
  --lab-teal:#4EC3B5;
  --chat-bg:#0B141A; --bubble-in:#202C33; --bubble-out:#005C4B;
  --nav-bg:rgba(27,23,20,.86); --ph-hd:#1F2C34; --sys-bg:rgba(239,233,221,.09);
  --draft-bg:#17232B; --draft-bd:rgba(127,211,176,.45);
  --qr-hov:#26343D; --sugg-bg:rgba(127,211,176,.14); --sugg-hov:rgba(127,211,176,.22);
  --bad:#E57A57; --link:#6FB3E0; --btn-hov:#257A5F; --card-bd:rgba(239,233,221,.1);
}
body{background:var(--cream);color:var(--ink);font-family:var(--body);font-size:18px;line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--gut)}
.wrap--narrow{max-width:860px}
h1,h2,h3,h4{text-wrap:balance;overflow-wrap:break-word}
.h1{font-family:var(--display);font-weight:800;font-size:clamp(34px,4.6vw,56px);line-height:1.08;letter-spacing:-.03em}
.h2{font-family:var(--display);font-weight:700;font-size:clamp(28px,3.8vw,44px);line-height:1.12;letter-spacing:-.024em}
.h1 em,.h2 em{font-style:normal;font-weight:800;color:var(--green)}
.lede{font-size:clamp(17px,1.5vw,19px);line-height:1.62;color:var(--soft);max-width:50ch;margin:20px 0 0}
.lede b{color:var(--ink)}
.body{font-size:clamp(17px,1.4vw,19px);line-height:1.72;color:var(--soft);max-width:60ch}
.body+.body{margin-top:18px}
.body b{color:var(--ink);font-weight:600}
.kicker{font-weight:700;font-size:13px;letter-spacing:.09em;text-transform:uppercase;color:var(--green);margin-bottom:12px}

.nav{position:sticky;top:0;z-index:60;background:var(--nav-bg);backdrop-filter:blur(12px);border-bottom:1px solid var(--rule-soft)}
.nav__in{max-width:var(--maxw);margin:0 auto;padding:14px var(--gut);display:flex;align-items:center;gap:20px;justify-content:space-between}
.brand{display:flex;align-items:baseline;gap:10px;text-decoration:none}
.brand b{font-weight:800;font-size:21px;letter-spacing:-.03em}
.brand span{font-size:13px;color:var(--faint)}
@media(max-width:520px){.brand span{display:none}}
.nav__links{display:none;gap:26px}
@media(min-width:960px){.nav__links{display:flex}}
.nav__links a{font-size:15px;font-weight:500;color:var(--soft);text-decoration:none;padding:4px 0;border-bottom:2px solid transparent}
.nav__links a:hover,.nav__links a.is-here{border-bottom-color:var(--green);color:var(--ink)}
.nav .btn{padding:9px 16px;font-size:14px}
.nav__right{display:flex;align-items:center;gap:10px}
.theme-btn{width:40px;height:40px;border-radius:50%;border:1px solid var(--rule);background:transparent;color:var(--soft);font-size:16px;cursor:pointer;display:grid;place-items:center;transition:border-color .15s,color .15s;flex:none}
.theme-btn:hover{border-color:var(--green);color:var(--green-deep)}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:600;font-size:15px;text-decoration:none;padding:12px 22px;border:1px solid var(--green);background:var(--green);color:#fff;border-radius:999px;transition:background .18s,box-shadow .18s,transform .18s;cursor:pointer}
.btn:hover{background:var(--btn-hov);box-shadow:0 8px 24px rgba(30,107,84,.22);transform:translateY(-1px)}
.btn--ghost{background:transparent;color:var(--green-deep)}
.btn--ghost:hover{background:var(--green-wash);box-shadow:none}
.btn--lg{padding:14px 26px;font-size:15.5px}
.btn--wa{border-color:var(--wa);background:var(--wa);color:var(--wa-ink)}
.btn--wa:hover{background:#1fc25b;box-shadow:0 8px 24px rgba(37,211,102,.28)}
.btn--wa svg{flex:none}
:focus-visible{outline:2px solid var(--green);outline-offset:3px}

section{padding:clamp(58px,8vw,104px) 0}
.tint{background:var(--sand)}

footer{border-top:1px solid var(--rule-soft);padding:38px 0 48px;background:var(--sand)}
.foot__in{display:flex;flex-wrap:wrap;gap:14px 30px;align-items:center;justify-content:space-between;font-size:14px;color:var(--faint)}
.foot__links{display:flex;flex-wrap:wrap;gap:10px 18px;align-items:baseline}
.foot__links a{color:var(--soft);text-decoration:none}
.foot__links a:hover{color:var(--ink)}
.foot__sep{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--faint)}
.foot__sep--lab{color:var(--lab-teal)}

/* ============ v2 navigation — shared (dropdown panels + mobile burger).
   Split control: the label is a link to the page, the caret opens the panel. */
.nav__links--v2{display:flex;gap:4px;align-items:center}
.nd{position:relative}
.nd__t{display:flex;align-items:center;border-radius:8px}
.nd__t>a{font-family:var(--body);font-size:14.5px;font-weight:600;color:var(--soft);text-decoration:none;padding:9px 3px 9px 12px;border-radius:8px 0 0 8px}
.nd__c{font-family:var(--body);background:none;border:0;cursor:pointer;color:var(--faint);font-size:10px;line-height:1;padding:10px 10px 8px 3px;border-radius:0 8px 8px 0;transition:transform .15s}
.nd__t:hover,.nd.open .nd__t{background:var(--sys-bg)}
.nd__t:hover>a,.nd.open .nd__t>a{color:var(--ink)}
.nd.open .nd__c{transform:rotate(180deg)}
.nd__t.is-here>a{color:var(--green-deep)}
.nav__links--v2>a{font-size:14.5px;font-weight:600;color:var(--soft);text-decoration:none;padding:9px 12px;border-radius:8px}
.nav__links--v2>a:hover{color:var(--ink);background:var(--sys-bg)}
.nav__links--v2>a.is-here{color:var(--green-deep)}
.nd__p{position:absolute;top:calc(100% + 8px);left:0;min-width:240px;background:var(--white);border:1px solid var(--rule);border-top:3px solid var(--green);border-radius:3px;box-shadow:0 20px 50px rgba(44,42,37,.18);padding:8px;display:none;flex-direction:column;z-index:60}
.nd.open .nd__p{display:flex}
.nd__p a{font-size:14.5px;font-weight:500;color:var(--ink);text-decoration:none;padding:10px 12px;border-radius:8px;display:flex;justify-content:space-between;gap:14px}
.nd__p a:hover{background:var(--green-wash);color:var(--green-deep)}
.nd__p a small{font-size:12px;color:var(--faint);font-weight:400}
.nd__p .nd__sep{height:1px;background:var(--rule-soft);margin:6px 10px}
.nav__burger{display:none;background:none;border:1px solid var(--rule);border-radius:8px;width:38px;height:38px;cursor:pointer;color:var(--ink);font-size:17px;line-height:1}
@media(max-width:919px){
  .nav__links--v2{display:none}
  .nav__burger{display:grid;place-items:center}
  .nav.m-open .nav__links--v2{display:flex;flex-direction:column;align-items:stretch;position:absolute;top:100%;left:0;right:0;background:var(--white);border-bottom:1px solid var(--rule);box-shadow:0 30px 60px rgba(44,42,37,.2);padding:14px var(--gut) 22px;gap:2px}
  .nd__p{position:static;box-shadow:none;border:0;border-left:2px solid var(--rule-soft);border-radius:0;padding:2px 0 4px 10px;margin:0 0 4px 12px}
  .nav.m-open .nd .nd__p{display:flex}
  .nd__t{width:100%}
  .nd__t>a{flex:1}
  .nd__c{display:none}
}