:root{
  --bg:#020817; --fg:#f8fafc; --primary:#4827ec; --primary-2:#6d4dff;
  --muted:#94a3b8; --border:#1e293b; --card:#0b1425; --ok:#22c55e; --bad:#ef4444;
  --accent:#6d4dff;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);font-family:Inter,system-ui,-apple-system,sans-serif;
     line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:inherit}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:50;background:rgba(2,8,23,.88);backdrop-filter:blur(14px);
     border-bottom:1px solid var(--border)}
.nav .inner{max-width:1160px;margin:0 auto;padding:12px 22px;display:flex;align-items:center;gap:14px}
.brand{font-family:'Instrument Sans',sans-serif;font-weight:800;font-size:17px;letter-spacing:-.01em;
       text-decoration:none;white-space:nowrap}
.brand span{color:var(--accent)}
.links{display:flex;gap:2px;align-items:center;overflow-x:auto;scrollbar-width:none;margin-left:8px}
.links::-webkit-scrollbar{display:none}
.links a{color:var(--muted);text-decoration:none;font-size:14.5px;font-weight:500;padding:8px 11px;
         border-radius:9px;white-space:nowrap;transition:.15s}
.links a:hover{color:var(--fg);background:rgba(148,163,184,.09)}
.links a[aria-current="page"]{color:var(--fg);background:rgba(109,77,255,.16)}
.nav .cta{margin-left:auto}

/* ---------- buttons ---------- */
.btn{display:inline-block;background:var(--primary);color:#fff;text-decoration:none;font-weight:600;
     padding:13px 22px;border-radius:12px;font-size:15px;border:1px solid transparent;cursor:pointer;
     transition:.15s;font-family:inherit}
.btn:hover{background:var(--primary-2);transform:translateY(-1px)}
.btn.ghost{background:transparent;border-color:var(--border);color:var(--fg)}
.btn.ghost:hover{border-color:var(--accent);background:rgba(109,77,255,.08)}
.btn.sm{padding:9px 16px;font-size:14px;border-radius:10px}

/* ---------- layout ---------- */
.wrap{max-width:1160px;margin:0 auto;padding:0 22px;position:relative}
section{padding:60px 0;border-top:1px solid var(--border)}
.eyebrow{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.13em;text-transform:uppercase;
         color:var(--accent);margin-bottom:14px}
h1{font-family:'Instrument Sans',sans-serif;font-weight:800;font-size:clamp(31px,5vw,54px);line-height:1.06;
   letter-spacing:-.028em;margin:0 0 18px;max-width:16ch}
h1 em{color:var(--accent);font-style:normal}
h2{font-family:'Instrument Sans',sans-serif;font-size:clamp(23px,3.2vw,34px);letter-spacing:-.022em;
   margin:0 0 14px;line-height:1.15}
h3{font-family:'Instrument Sans',sans-serif;font-size:17.5px;margin:0 0 8px}
p{color:#cbd5e1}
.sub{color:var(--muted);font-size:16px}

/* ---------- hero ---------- */
.hero{position:relative;padding:82px 0 70px;overflow:hidden;border-bottom:1px solid var(--border)}
.hero .mesh{position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(760px 380px at 12% -8%,color-mix(in srgb,var(--accent) 26%,transparent),transparent 70%),
    radial-gradient(620px 320px at 88% 4%,rgba(72,39,236,.20),transparent 72%)}
.hero .grid{position:absolute;inset:0;opacity:.5;pointer-events:none;
  background-image:linear-gradient(rgba(148,163,184,.075) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(148,163,184,.075) 1px,transparent 1px);
  background-size:58px 58px;
  mask-image:radial-gradient(circle at 50% 12%,#000 12%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 50% 12%,#000 12%,transparent 72%)}
.hero .wrap{position:relative}
.lead{color:#cbd5e1;font-size:18.5px;margin:0 0 30px;max-width:70ch}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.cta-note{color:var(--muted);font-size:13.5px;margin-top:16px}

/* ---------- cards ---------- */
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.grid3{display:grid;grid-template-columns:repeat(auto-fit,minmax(268px,1fr));gap:20px}
.grid4{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}
.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:22px;position:relative}
.card h3{font-family:'Instrument Sans',sans-serif}
.card p{margin:0;font-size:15px}
.card .tag{font-size:11.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);
           display:block;margin-bottom:10px}
.card.pain{border-color:rgba(239,68,68,.34)}
.card.pain .tag{color:#f87171}
.card.fix{border-color:rgba(34,197,94,.34)}
.card.fix .tag{color:#4ade80}
.card.accent{border-left:3px solid var(--accent)}
.card.link{text-decoration:none;display:block;transition:.18s}
.card.link:hover{transform:translateY(-3px);border-color:var(--accent);background:#0d1730}
.card .go{color:var(--accent);font-weight:600;font-size:14.5px;margin-top:14px;display:block}
.moment{font-size:17px;color:#e2e8f0}
.steps{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(226px,1fr))}
.step{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:18px}
.step b{font-family:'Instrument Sans',sans-serif;display:block;margin-bottom:6px;font-size:15.5px}
.step b i{color:var(--accent);font-style:normal;margin-right:6px}
.step span{color:var(--muted);font-size:14.5px}

/* ---------- capture demo ---------- */
.demo-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:22px;align-items:start}
.panel{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:20px}
.panel-head{display:flex;align-items:center;gap:10px;margin-bottom:14px;font-weight:600;font-size:15px}
.dot{width:9px;height:9px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px rgba(34,197,94,.16);
     animation:pulse 2s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 4px rgba(34,197,94,.16)}50%{box-shadow:0 0 0 7px rgba(34,197,94,.05)}}
.transcript{min-height:236px;display:flex;flex-direction:column;gap:11px}
.line{display:flex;gap:10px;opacity:0;transform:translateY(6px);transition:.35s}
.line.show{opacity:1;transform:none}
.line .who{flex:0 0 46px;font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;
           color:var(--muted);padding-top:3px}
.line.ai .who{color:var(--accent)}
.line .said{background:#101c33;border:1px solid var(--border);border-radius:11px;padding:9px 13px;font-size:14.5px;
            color:#e2e8f0}
.line.ai .said{border-color:rgba(109,77,255,.34)}
.hint{color:var(--muted);font-size:13.5px;margin-top:16px;display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.field{margin-bottom:13px}
.field label{display:block;font-size:12.5px;font-weight:600;color:var(--muted);margin-bottom:6px;
             letter-spacing:.02em}
.field input,.field select,.field textarea{width:100%;background:#0a1122;border:1px solid var(--border);
  border-radius:10px;padding:11px 13px;color:var(--fg);font-family:inherit;font-size:14.5px;transition:.2s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(109,77,255,.16)}
.field.filled input,.field.filled select,.field.filled textarea{border-color:rgba(34,197,94,.55);
  background:rgba(34,197,94,.05)}
.field.flash{animation:flash .7s}
@keyframes flash{0%{background:rgba(34,197,94,.20)}100%{background:rgba(34,197,94,.05)}}
.form-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.note{font-size:13px;color:var(--muted);margin-top:12px}
.terms{background:rgba(72,39,236,.09);border:1px solid rgba(109,77,255,.3);border-radius:14px;padding:18px;
       margin-top:20px}
.terms b{font-family:'Instrument Sans',sans-serif;font-size:14px}
.terms p{font-size:13px;margin:8px 0 0;color:#cbd5e1}

/* ---------- calculator ---------- */
.calc-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;align-items:start}
.slider{margin-bottom:20px}
.slider .row{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:8px}
.slider label{font-size:14px;color:#cbd5e1;font-weight:500}
.slider .val{font-family:'Instrument Sans',sans-serif;font-weight:700;color:var(--accent);font-size:15.5px}
input[type=range]{width:100%;-webkit-appearance:none;appearance:none;height:5px;border-radius:5px;
  background:linear-gradient(90deg,var(--accent) var(--pct,50%),#1e293b var(--pct,50%));outline:none}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:19px;height:19px;border-radius:50%;
  background:#fff;border:4px solid var(--primary);cursor:pointer;box-shadow:0 2px 8px rgba(0,0,0,.4)}
input[type=range]::-moz-range-thumb{width:15px;height:15px;border-radius:50%;background:#fff;
  border:4px solid var(--primary);cursor:pointer}
.out{background:linear-gradient(160deg,#101c33,#0b1425);border:1px solid var(--border);border-radius:16px;
     padding:24px}
.out .k{color:var(--muted);font-size:13.5px;margin:0}
.big{font-family:'Instrument Sans',sans-serif;font-size:clamp(34px,6vw,50px);font-weight:800;
     letter-spacing:-.03em;line-height:1.05;margin:2px 0 20px;color:#fff}
.big em{color:var(--ok);font-style:normal}
.out .rowline{display:flex;justify-content:space-between;padding:11px 0;border-top:1px solid var(--border);
              font-size:14.5px;color:#cbd5e1}
.out .rowline b{font-family:'Instrument Sans',sans-serif}

/* ---------- footer / final ---------- */
.final{text-align:center;padding:66px 0 76px}
.final .lead{margin:0 auto 26px}
footer{border-top:1px solid var(--border);padding:30px 0 46px;color:var(--muted);font-size:13.5px}
footer .wrap{display:flex;gap:18px;flex-wrap:wrap;align-items:center}
footer a{color:var(--muted);text-decoration:none}
footer a:hover{color:var(--fg)}
.skip{position:absolute;left:-9999px}
.skip:focus{left:8px;top:8px;z-index:99;background:var(--primary);color:#fff;padding:10px 16px;border-radius:8px}

@media(max-width:900px){
  .demo-grid,.calc-grid,.grid2{grid-template-columns:1fr}
  .hero{padding:60px 0 54px}
  .links{gap:0}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .line{opacity:1;transform:none}
  html{scroll-behavior:auto}
}