/* fac16 founder pages (/, /example/, /start/, /method-access/), from the v4 founder homepage mock.
   Same tokens and values as the existing site; no new colours. */
:root{
  --ink:#0E1B2C; --ink-soft:#33415C; --mid:#5F6C85;
  --paper:#FFFFFF; --paper-alt:#F4F6FA; --rule:#E2E7F0;
  --mark:#0B4ED6; --mark-pressed:#0940AE; --white:#FFFFFF;
  --hero-bg:#E2EAFA;
  --band-bg:#0E1B2C; --band-text:#C4CFE4; --band-strong:#FFFFFF;
  --band-mid:#94A3C4; --band-accent:#8FB0F8; --band-rule:#26364F;
  --logo-pop:#0E1B2C; --logo-tail:#0B4ED6; --logo-pop-band:#FFFFFF; --logo-tail-band:var(--band-accent);
  --display:"IBM Plex Sans",system-ui,sans-serif;
  --body:"IBM Plex Sans",system-ui,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,monospace;
  --gut:28px; --sec:74px; --sec-wide:104px;
}
html[data-theme="dark"]{
  --ink:#E6EBF4; --ink-soft:#B7C3D8; --mid:#8494AD;
  --paper:#0E1B2C; --paper-alt:#16273B; --rule:#31435F;
  --mark:#6E9DF2; --mark-pressed:#8FB0F8; --white:#16273B;
  --hero-bg:#16273B;
  --band-bg:#16273B; --band-text:#B7C3D8; --band-strong:#E6EBF4;
  --band-mid:#8494AD; --band-accent:#8FB0F8; --band-rule:#31435F;
  --logo-pop:#E6EBF4; --logo-tail:var(--band-accent); --logo-pop-band:#E6EBF4; --logo-tail-band:var(--band-accent);
}
@media(max-width:860px){:root{--gut:20px;--sec:56px;--sec-wide:56px}}
html.theming,html.theming *{transition:background-color .22s ease,color .22s ease,border-color .22s ease,fill .22s ease!important}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.6;font-variant-numeric:tabular-nums;-webkit-font-smoothing:antialiased}
a{color:var(--mark)}
a:hover{color:var(--mark-pressed)}
:focus-visible{outline:2px solid var(--mark);outline-offset:3px}
.skip{position:absolute;left:-9999px;top:0;z-index:100;background:var(--mark);color:#fff;padding:12px 18px;border-radius:3px;font-size:15px;font-weight:600;text-decoration:none}
.skip:focus{left:20px;top:10px}
main{outline:none}
.wrap{max-width:1120px;margin:0 auto;padding:0 var(--gut)}
.read{max-width:820px}
p{margin:0 0 18px}
h1,h2{font-family:var(--display);font-weight:700;margin:0;color:var(--ink)}
h1:focus{outline:none}
.label{margin:0 0 14px;font-family:var(--mono);font-size:13px;letter-spacing:.06em;line-height:1.4;color:var(--ink-soft)}
.lead{font-size:20px;line-height:1.6;color:var(--ink-soft)}
.note{font-size:15px;line-height:1.6;color:var(--ink-soft)}
.actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px 32px}
.actions .fx-btn{padding:14px 26px}
.textlink{padding:12px 0;font-size:17px;font-weight:600;line-height:1.4;white-space:nowrap}

/* Logo (same construction as every existing page) */
.logo{display:inline-flex;flex-direction:column;align-items:flex-start;gap:3px;text-decoration:none;font-size:20px;flex-shrink:0;line-height:1.1}
.logo .row{display:flex;align-items:baseline;gap:.42em}
.logo .mk{font-family:var(--display);font-size:1em;font-weight:700;letter-spacing:-.022em;line-height:1.1;color:var(--logo-pop);white-space:nowrap}
.logo .sig{height:.92em;width:1.79em;align-self:baseline;display:block;flex-shrink:0}
.logo .sub{font-family:var(--mono);font-size:.45em;letter-spacing:.13em;text-transform:uppercase;color:var(--mid);white-space:nowrap;line-height:1.4}
@media(max-width:860px){.logo{font-size:17px}}

/* Hero */
.hero{background:var(--hero-bg);padding:72px 0 88px;overflow:hidden}
.hero .wrap{display:flex;flex-wrap:wrap;align-items:center;gap:56px}
.hero-copy{flex:1 1 400px;min-width:0}
.hero-copy .label{margin-bottom:28px}
.hero h1{font-size:clamp(44px,6.2vw,84px);letter-spacing:-.03em;line-height:1.0;text-wrap:balance}
.hero .lead{margin:32px 0 0;max-width:30em;text-wrap:pretty}
.hero .actions{margin-top:40px}
@media(max-width:860px){.hero{padding:48px 0 56px}}

/* Situations: illustrative portraits with a rotating caption card */
.sits:focus-visible{outline:2px solid var(--mark);outline-offset:4px}
.sits{flex:1 1 320px;max-width:460px;min-width:0;position:relative;margin:0 auto}
.sits-frame{position:relative;aspect-ratio:3/4;overflow:hidden;border-radius:3px;background:var(--paper-alt)}
.sits-frame img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block;opacity:0;transition:opacity .85s ease}
.sits-frame img.on{opacity:1}
.sits-tag{position:absolute;top:12px;left:12px;margin:0;background:var(--paper);color:var(--ink-soft);font-family:var(--mono);font-size:11px;letter-spacing:.08em;line-height:1.4;padding:4px 8px;border-radius:3px}
.sit{position:absolute;left:12px;bottom:28px;width:min(300px,calc(100% - 24px));background:var(--paper);border:1px solid var(--rule);border-radius:3px;padding:18px 20px;opacity:0;transform:translateY(14px);transition:opacity .3s ease,transform .3s ease}
.sit.on{opacity:1;transform:none;transition:opacity .5s ease .35s,transform .85s cubic-bezier(.22,.9,.3,1) .35s}
@media(min-width:1100px){.sit{left:-56px}}
.sit p{margin:0}
.sit .m{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;line-height:1.4;color:var(--ink-soft)}
.sit .q{margin-top:8px;font-size:17px;font-weight:600;line-height:1.4;color:var(--ink)}
.sit .pr{margin-top:14px;padding-top:12px;border-top:1px solid var(--rule)}
.sit .pl{font-family:var(--mono);font-size:11px;letter-spacing:.06em;line-height:1.4;color:var(--ink-soft)}
.sit .pv{margin-top:4px;font-size:14px;line-height:1.4;color:var(--ink)}
@media(prefers-reduced-motion:reduce){.sits-frame img,.sit,.sit.on{transition:none}}

/* How it works */
.how{padding:var(--sec-wide) 0}
.how-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:16px 40px}
.how-head h2{font-size:clamp(30px,3.6vw,44px);letter-spacing:-.022em;line-height:1.1}
.how-head a{padding:12px 0;font-size:15px;font-weight:600;line-height:1.4}
.steps{list-style:none;margin:48px 0 0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr));gap:40px 24px}
.steps li{border-top:1px solid var(--ink);padding-top:20px}
.steps p{margin:0}
.steps .n{font-size:56px;font-weight:700;letter-spacing:-.03em;line-height:1.0;color:var(--mark)}
.steps .t{margin-top:20px;font-size:23px;font-weight:700;letter-spacing:-.022em;line-height:1.4}
.steps .d{margin-top:6px;color:var(--ink-soft)}
.how .actions{margin-top:64px}

/* Inner pages: example, start, method access */
.page{padding:var(--sec) 0 var(--sec-wide)}
.page h1{font-size:clamp(26px,3.2vw,38px);letter-spacing:-.022em;line-height:1.1}
.page h1.big{font-size:clamp(36px,5.2vw,60px)}
.page .back{display:inline-block;padding:12px 0;font-size:15px;line-height:1.4}
.result{margin-top:36px;border:1px solid var(--rule);border-radius:3px;background:var(--paper)}
.result dl{margin:0;padding:0 26px}
.result dl>div{display:grid;grid-template-columns:190px minmax(0,1fr);gap:6px 24px;padding:22px 0}
.result dl>div+div{border-top:1px solid var(--rule)}
.result dt{font-family:var(--mono);font-size:12px;letter-spacing:.06em;line-height:1.6;color:var(--ink-soft)}
.result dd{margin:0;min-width:0}
.result dd.pri{font-size:23px;font-weight:600;line-height:1.4;border-left:12px solid var(--mark);padding-left:14px;margin-left:-26px}
.result dd.q{font-weight:600}
@media(max-width:620px){.result dl{padding:0 20px}.result dl>div{grid-template-columns:1fr}.result dd.pri{margin-left:-20px;padding-left:8px}}
.caveat{margin-top:28px;padding-top:20px;border-top:1px solid var(--rule);max-width:40em}
.facts{margin:36px 0 0;border-top:1px solid var(--rule)}
.facts>div{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px 24px;padding:16px 0;border-bottom:1px solid var(--rule)}
.facts dd{margin:0}
.tbc{font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:var(--ink-soft);border:1px dashed var(--mid);border-radius:3px;padding:3px 8px}
.proto{margin:0 0 28px;padding:12px 16px;border:1px solid var(--rule);border-radius:3px;background:var(--paper-alt);font-family:var(--mono);font-size:12px;letter-spacing:.06em;line-height:1.5;color:var(--ink-soft)}
button.fx-btn[disabled]{opacity:.55;cursor:not-allowed}
.access-form{margin-top:32px}
.btns{display:flex;gap:14px;flex-wrap:wrap}