/* FlowAgent marketing page.
   A calm, conventional light SaaS page — intentionally nothing like the
   SuperAI home page it used to copy. No fixed section rail, no drifting
   glow orbs, no grid/grain overlays, no scroll-triggered reveals, no
   full-viewport hero. There are no @keyframes in this file at all; the
   only motion is a 0.15s hover transition. */

:root{
  --ink:#0f172a; --ink-2:#334155; --muted:#64748b; --faint:#94a3b8;
  --line:#e6eaf0; --line-2:#d3dae4;
  --bg:#ffffff; --bg-alt:#f8fafc; --band:#101828;
  --accent:#2563eb; --ok:#059669;
  --sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,system-ui,sans-serif;
  --display:"Plus Jakarta Sans","Inter",system-ui,sans-serif;
  --wrap:1120px;
  --r:12px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink-2);font-family:var(--sans);
  font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
h1,h2,h3{font-family:var(--display);color:var(--ink);margin:0;letter-spacing:-.02em;line-height:1.15}
p{margin:0}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.9em;
  background:#eef2f7;border-radius:5px;padding:.1em .35em;color:var(--ink)}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.wrap-narrow{max-width:760px}
section[id]{scroll-margin-top:76px}

/* -------------------------------------------------------------- buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--display);font-weight:600;font-size:14.5px;letter-spacing:-.01em;
  padding:10px 18px;border-radius:9px;border:1px solid transparent;cursor:pointer;
  transition:background .15s,border-color .15s,color .15s;
}
.btn-lg{padding:13px 24px;font-size:15.5px}
.btn-sm{padding:7px 14px;font-size:13px;border-radius:8px}
.btn-solid{background:var(--ink);color:#fff}
.btn-solid:hover{background:#1e2b43}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line-2)}
.btn-ghost:hover{border-color:var(--ink);}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:#eef2f7}
.link-quiet{font-size:14.5px;font-weight:500;color:var(--ink-2)}
.link-quiet:hover{color:var(--ink)}

/* ------------------------------------------------------------------ nav */
.nav{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(140%) blur(8px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;gap:28px;height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;font-family:var(--display);
  font-weight:800;font-size:17px;color:var(--ink);letter-spacing:-.025em}
.brand-mark{width:28px;height:28px;border-radius:8px;background:var(--ink);color:#fff;
  display:grid;place-items:center;flex:none}
.brand-mark svg{width:15px;height:15px}
.nav-links{display:flex;gap:26px;margin-left:12px;font-size:14.5px;font-weight:500;color:var(--muted)}
.nav-links a:hover{color:var(--ink)}
.nav-cta{display:flex;align-items:center;gap:16px;margin-left:auto}

/* ----------------------------------------------------------------- hero */
.hero{padding:76px 0 84px;border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.92fr);
  gap:56px;align-items:center}
.pill{display:inline-block;font-size:12.5px;font-weight:600;color:var(--ink-2);
  background:var(--bg-alt);border:1px solid var(--line);border-radius:999px;padding:5px 13px;
  margin-bottom:22px;font-family:var(--display)}
.hero h1{font-size:clamp(34px,4.4vw,52px);font-weight:800;letter-spacing:-.035em}
.lede{margin-top:20px;font-size:17px;color:var(--ink-2);max-width:48ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-points{list-style:none;margin:28px 0 0;padding:0;display:flex;flex-direction:column;gap:9px}
.hero-points li{position:relative;padding-left:26px;font-size:14.5px;color:var(--muted)}
.hero-points li::before{
  content:"";position:absolute;left:0;top:7px;width:14px;height:14px;border-radius:50%;
  background:var(--ok);
  -webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M12 2a10 10 0 1 0 0 20 10 10 0 0 0 0-20zm-1 14.5-4-4 1.4-1.4 2.6 2.6 5.6-5.6L18 9.5z'/%3E%3C/svg%3E") center/contain no-repeat;
          mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M12 2a10 10 0 1 0 0 20 10 10 0 0 0 0-20zm-1 14.5-4-4 1.4-1.4 2.6 2.6 5.6-5.6L18 9.5z'/%3E%3C/svg%3E") center/contain no-repeat;
}

/* ------------------------------------------------------------ hero mock */
.mock{border:1px solid var(--line-2);border-radius:14px;background:#fff;overflow:hidden;
  box-shadow:0 1px 2px rgba(16,24,40,.04),0 12px 32px rgba(16,24,40,.08)}
.mock-bar{display:flex;align-items:center;gap:10px;padding:13px 16px;
  background:var(--bg-alt);border-bottom:1px solid var(--line)}
.mock-ref{font-size:12.5px;color:var(--faint);font-weight:600}
.mock-title{font-size:13.5px;font-weight:600;color:var(--ink);overflow:hidden;
  text-overflow:ellipsis;white-space:nowrap}
.tag{margin-left:auto;flex:none;font-size:11.5px;font-weight:600;padding:3px 10px;border-radius:999px}
.tag-live{background:#e8edfb;color:#1d4ed8}
.mock-estimate{display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:14px 16px;border-bottom:1px solid var(--line)}
.mock-label{display:block;font-size:11.5px;color:var(--faint);font-weight:600;margin-bottom:1px}
.mock-estimate strong{font-family:var(--display);font-size:16px;color:var(--ink)}
.mock-body{padding:16px;display:flex;flex-direction:column;gap:10px}
.mock-msg{font-size:13.5px;line-height:1.55;color:var(--ink-2);background:var(--bg-alt);
  border-radius:11px;padding:11px 13px}
.mock-who{display:block;font-size:11px;font-weight:700;color:var(--ink);margin-bottom:3px;
  font-family:var(--display)}
.mock-steps{display:inline-flex;align-items:center;gap:8px;align-self:flex-start;
  font-size:12.5px;color:var(--muted);border:1px solid var(--line);border-radius:8px;padding:6px 12px}
.chev{color:var(--faint);font-size:15px;line-height:1}
.mock-note{font-size:12px;color:var(--ok);background:#ecfdf5;border:1px solid #c9ece0;
  border-radius:8px;padding:8px 12px}

/* -------------------------------------------------------------- section */
.section{padding:84px 0}
.section-alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.head{max-width:620px;margin-bottom:46px}
.head h2{font-size:clamp(26px,3.1vw,34px);font-weight:700}
.head p{margin-top:14px;color:var(--muted);font-size:16px}

/* ---------------------------------------------------------------- steps */
.steps{list-style:none;margin:0;padding:0;display:grid;
  grid-template-columns:repeat(5,minmax(0,1fr));gap:22px;counter-reset:s}
.steps li{position:relative;padding-top:12px}
.steps li::after{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--line)}
.steps li:first-child::after{background:var(--ink)}
.step-n{display:inline-grid;place-items:center;width:25px;height:25px;border-radius:7px;
  background:var(--ink);color:#fff;font-family:var(--display);font-weight:700;font-size:12.5px;
  margin:14px 0 12px}
.steps h3{font-size:16px;font-weight:700;margin-bottom:7px}
.steps p{font-size:14px;color:var(--muted);line-height:1.6}

/* ---------------------------------------------------------------- cards */
.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px 22px;
  transition:border-color .15s,box-shadow .15s}
.card:hover{border-color:var(--line-2);box-shadow:0 6px 20px rgba(16,24,40,.06)}
.card h3{font-size:16.5px;font-weight:700;margin-bottom:9px}
.card p{font-size:14.5px;color:var(--muted)}

/* ----------------------------------------------------------------- band */
.band{background:var(--band);color:#cbd5e1;padding:84px 0}
.band-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:center}
.band h2{color:#fff;font-size:clamp(25px,3vw,32px);font-weight:700;max-width:17ch}
.band p{margin:18px 0 28px;color:#94a3b8;font-size:16px;max-width:46ch}
.trail{list-style:none;margin:0;padding:0;border-left:2px solid #253049;padding-left:22px;
  display:flex;flex-direction:column;gap:19px}
.trail li{position:relative;display:flex;gap:12px;align-items:flex-start}
.dot{position:absolute;left:-29px;top:5px;width:11px;height:11px;border-radius:50%;
  background:#334155;border:2px solid var(--band);flex:none}
.dot-ok{background:var(--ok)}
.trail strong{display:block;color:#f1f5f9;font-size:14.5px;font-weight:600;font-family:var(--display)}
.trail em{font-style:normal;font-size:13px;color:#7d8da6}

/* ------------------------------------------------------------------ faq */
details{border-bottom:1px solid var(--line);padding:18px 0}
details summary{
  font-family:var(--display);font-weight:600;font-size:16.5px;color:var(--ink);
  cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px;
}
details summary::-webkit-details-marker{display:none}
details summary::after{content:"+";color:var(--faint);font-size:20px;line-height:1;flex:none}
details[open] summary::after{content:"–"}
details p{margin-top:12px;color:var(--muted);font-size:15px;max-width:68ch}

/* ------------------------------------------------------------------ cta */
.cta{padding:88px 0 96px;text-align:center;border-top:1px solid var(--line);background:var(--bg-alt)}
.cta h2{font-size:clamp(27px,3.3vw,36px);font-weight:700}
.cta p{margin:16px auto 28px;max-width:44ch;color:var(--muted);font-size:16px}

/* --------------------------------------------------------------- footer */
.foot{border-top:1px solid var(--line);padding:26px 0}
.foot-in{display:flex;align-items:center;gap:24px;flex-wrap:wrap}
.brand-sm{font-size:15px}
.foot nav{display:flex;gap:20px;font-size:14px;color:var(--muted)}
.foot nav a:hover{color:var(--ink)}
.foot-note{margin-left:auto;font-size:13px;color:var(--faint)}

/* ---------------------------------------------------------- responsive */
@media (max-width:1000px){
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .lede{max-width:none}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}
  .cards{grid-template-columns:repeat(2,minmax(0,1fr))}
  .band-grid{grid-template-columns:1fr;gap:40px}
}
@media (max-width:760px){
  .nav-links{display:none}
  .hero{padding:52px 0 60px}
  .section,.band{padding:62px 0}
  .steps,.cards{grid-template-columns:1fr}
  .foot-in{flex-direction:column;align-items:flex-start;gap:14px}
  .foot-note{margin-left:0}
}