/* NetAI Services — Linear dark-technical adaptation, house accent: emerald
   Sources: popular-web-designs/templates/linear.app.md + house navy->charcoal
   System: luminance elevation (no drop shadows), whisper borders, 1 accent  */
:root {
  --bg0: #090b11; --panel: #0e1119;
  --s2: rgba(255,255,255,.02); --s3: rgba(255,255,255,.04); --s4: rgba(255,255,255,.055);
  --t1: #f7f8f8; --t2: #d0d6e0; --t3: #8a8f98; --t4: #62666d;
  --b1: rgba(255,255,255,.05); --b2: rgba(255,255,255,.08);
  --acc: #34d399; --acc-h: #6ee7b7; --acc-ink: #06120c;
  --amber: #d97706; --red: #ef4444;
  --r-btn: 6px; --r-card: 8px; --r-panel: 12px;
  --ease: cubic-bezier(.16,1,.3,1);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg0); color: var(--t2);
  font: 400 16px/1.6 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  font-feature-settings: "cv01","ss03";
  -webkit-font-smoothing: antialiased;
}
.mono { font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, 'Liberation Mono', monospace; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
a { color: inherit; text-decoration: none; }
::selection { background: rgba(52,211,153,.25); }

/* ---------- nav ---------- */
nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(14,17,25,.82); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--b1);
}
nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.mark { font: 500 14px/1 'JetBrains Mono', monospace; color: var(--t1); letter-spacing: .02em; }
.mark b { color: var(--acc); font-weight: 500; }
.nav-r { display: flex; align-items: center; gap: 26px; }
.nav-r a.lnk { font-size: 13.5px; font-weight: 500; color: var(--t3); transition: color .15s var(--ease); }
.nav-r a.lnk:hover { color: var(--t1); }

/* ---------- buttons (Linear: near-transparent or single accent) ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 14px; font-weight: 600; letter-spacing: -.01em;
  padding: 10px 18px; border-radius: var(--r-btn); border: 0; cursor: pointer;
  transition: background .15s var(--ease), transform .12s var(--ease), border-color .15s var(--ease);
}
.btn:active { transform: translateY(1px); }
.btn.acc { background: var(--acc); color: var(--acc-ink); }
.btn.acc:hover { background: var(--acc-h); }
.btn.ghost { background: var(--s2); color: var(--t2); border: 1px solid var(--b2); }
.btn.ghost:hover { background: var(--s4); color: var(--t1); }
.btn.lg { padding: 13px 24px; font-size: 15px; }

/* ---------- hero ---------- */
.hero { position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(55% 45% at 72% -5%, rgba(52,211,153,.075), transparent 70%),
    radial-gradient(40% 35% at 12% 8%, rgba(94,140,255,.05), transparent 70%);
}
.hero .wrap {
  position: relative; display: grid; grid-template-columns: 1.02fr .98fr;
  gap: 56px; align-items: center; padding-top: 88px; padding-bottom: 72px;
}
.pill {
  display: inline-flex; align-items: center; gap: 8px;
  font: 500 11.5px/1 'JetBrains Mono', monospace; letter-spacing: .06em;
  color: var(--t2); padding: 6px 12px 6px 8px;
  border: 1px solid #23252a; border-radius: 9999px; background: var(--s2);
}
.pill i { width: 6px; height: 6px; border-radius: 50%; background: var(--acc); display: inline-block; }
h1 {
  font-size: clamp(34px, 4.6vw, 54px); font-weight: 500; color: var(--t1);
  line-height: 1.04; letter-spacing: -.028em; margin: 22px 0 0;
}
.hero .sub { font-size: 17.5px; line-height: 1.6; color: var(--t3); margin: 20px 0 30px; max-width: 46ch; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; }
.hero .under { margin-top: 18px; font-size: 12.5px; color: var(--t4); }

/* ---------- live calculator card (the hero visual: real widget) ---------- */
.calc {
  background: var(--panel); border: 1px solid var(--b2); border-radius: var(--r-panel);
  overflow: hidden;
  box-shadow: 0 0 0 1px rgba(0,0,0,.2), 0 24px 64px rgba(0,0,0,.4);
}
.calc .bar {
  display: flex; align-items: center; gap: 8px; padding: 11px 16px;
  border-bottom: 1px solid var(--b1); background: var(--s2);
}
.calc .bar .dot { width: 9px; height: 9px; border-radius: 50%; background: #23252a; }
.calc .bar .ttl { font: 500 11.5px/1 'JetBrains Mono', monospace; color: var(--t4); margin-left: 6px; }
.calc .body { padding: 18px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px 14px; }
.fld label { display: block; font-size: 11px; font-weight: 500; color: var(--t4); margin-bottom: 5px; letter-spacing: .01em; }
.fld input {
  width: 100%; background: var(--s2); border: 1px solid var(--b2); border-radius: var(--r-btn);
  color: var(--t1); font: 500 13.5px/1 'JetBrains Mono', monospace; padding: 9px 10px;
  transition: border-color .15s var(--ease);
}
.fld input:focus { outline: none; border-color: rgba(52,211,153,.55); }
.fld input:hover { border-color: #34343a; }
.calc .out {
  grid-column: 1 / -1; display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 10px; margin-top: 4px; padding-top: 14px; border-top: 1px solid var(--b1);
}
.kpi .k { font: 500 10.5px/1.3 'JetBrains Mono', monospace; color: var(--t4); letter-spacing: .04em; }
.kpi .v { font: 500 20px/1.15 'Inter', sans-serif; color: var(--t1); letter-spacing: -.02em; margin-top: 3px; font-variant-numeric: tabular-nums; }
.kpi .v.dscr-good { color: var(--acc); }
.kpi .v.dscr-thin { color: var(--amber); }
.kpi .v.dscr-bad { color: var(--red); }
.verdict {
  grid-column: 1 / -1; font-size: 13px; color: var(--t3); line-height: 1.5;
  padding: 10px 12px; border-radius: var(--r-card); background: var(--s2); border: 1px solid var(--b1);
}
.verdict b { color: var(--t1); font-weight: 600; }
.calc .note { grid-column: 1 / -1; font-size: 11px; color: var(--t4); }

/* ---------- stat strip ---------- */
.strip { border-top: 1px solid var(--b1); border-bottom: 1px solid var(--b1); background: var(--panel); }
.strip .wrap {
  display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap;
  padding-top: 18px; padding-bottom: 18px;
  font: 500 12px/1.5 'JetBrains Mono', monospace; color: var(--t3); letter-spacing: .02em;
}
.strip b { color: var(--t1); font-weight: 500; }

/* ---------- sections ---------- */
section { padding: 88px 0; }
.head { max-width: 640px; }
h2 { font-size: clamp(26px, 3vw, 36px); font-weight: 500; color: var(--t1); letter-spacing: -.022em; line-height: 1.12; }
.head p { color: var(--t3); margin-top: 12px; font-size: 16px; }

/* bento: 1 tall + 4 */
.bento { display: grid; grid-template-columns: 1.25fr 1fr 1fr; grid-template-rows: auto auto; gap: 14px; margin-top: 44px; }
.cell {
  background: var(--s2); border: 1px solid var(--b2); border-radius: var(--r-panel);
  padding: 26px 24px; transition: background .2s var(--ease), border-color .2s var(--ease);
}
.cell:hover { background: var(--s3); border-color: #34343a; }
.cell.tall { grid-row: span 2; display: flex; flex-direction: column; }
.cell h3 { font-size: 17px; font-weight: 600; color: var(--t1); letter-spacing: -.01em; }
.cell p { font-size: 14px; color: var(--t3); margin-top: 8px; line-height: 1.6; }
.cell .art { margin-top: auto; padding-top: 22px; }
.mini-sheet { font: 500 12px/1.9 'JetBrains Mono', monospace; color: var(--t3); }
.mini-sheet .row { display: flex; justify-content: space-between; gap: 16px; padding: 3px 10px; border-radius: 4px; }
.mini-sheet .row.hl { background: var(--s4); color: var(--t1); }
.mini-sheet .row.hl .n { color: var(--acc); }
.mini-sheet .row .neg { color: var(--red); }
.spark { width: 100%; height: 54px; display: block; }
.gauge-wrap { display: flex; align-items: baseline; gap: 10px; }
.gauge-wrap .big { font: 500 34px/1 'Inter', sans-serif; color: var(--acc); letter-spacing: -.03em; }

/* formula / lender table section */
.formula-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 44px; }
.fcard { background: var(--s2); border: 1px solid var(--b2); border-radius: var(--r-panel); padding: 26px 24px; }
.fcard h3 { font-size: 16px; font-weight: 600; color: var(--t1); }
.fcard .eq { font: 500 14px/1.7 'JetBrains Mono', monospace; color: var(--t2); background: var(--panel); border: 1px solid var(--b1); border-radius: var(--r-card); padding: 14px 16px; margin-top: 14px; }
.fcard .eq em { color: var(--acc); font-style: normal; }
.fcard p { font-size: 13.5px; color: var(--t3); margin-top: 12px; line-height: 1.65; }
table.lend { width: 100%; border-collapse: collapse; margin-top: 14px; font-size: 13.5px; }
table.lend td { padding: 9px 10px; border-bottom: 1px solid var(--b1); color: var(--t3); }
table.lend td:last-child { text-align: right; font-family: 'JetBrains Mono', monospace; color: var(--t2); }
table.lend tr:last-child td { border-bottom: 0; }

/* steps rail */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 44px; }
.step { border-left: 2px solid var(--acc); padding: 2px 0 2px 20px; }
.step .n { font: 500 11px/1 'JetBrains Mono', monospace; color: var(--acc); letter-spacing: .08em; }
.step h3 { font-size: 16.5px; font-weight: 600; color: var(--t1); margin: 8px 0 6px; }
.step p { font-size: 14px; color: var(--t3); line-height: 1.6; }

/* faq */
.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 44px; }
.faq-grid details { background: var(--s2); border: 1px solid var(--b2); border-radius: var(--r-card); padding: 16px 18px; }
.faq-grid summary { cursor: pointer; font-size: 14.5px; font-weight: 600; color: var(--t1); list-style: none; }
.faq-grid summary::-webkit-details-marker { display: none; }
.faq-grid summary::before { content: "+"; color: var(--acc); font-weight: 500; margin-right: 10px; font-family: 'JetBrains Mono', monospace; }
.faq-grid details[open] summary::before { content: "-"; }
.faq-grid details p { font-size: 13.5px; color: var(--t3); margin-top: 10px; line-height: 1.65; }

/* final cta */
.final { border-top: 1px solid var(--b1); background: var(--panel); }
.final .wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; padding-top: 88px; padding-bottom: 88px; }
.final h2 { font-size: clamp(26px, 3vw, 34px); }
.final p.d { color: var(--t3); margin-top: 14px; max-width: 48ch; }
.wl { display: flex; gap: 10px; margin-top: 24px; }
.wl input {
  flex: 1; background: var(--s2); border: 1px solid var(--b2); border-radius: var(--r-btn);
  color: var(--t1); font-size: 14px; padding: 12px 14px;
}
.wl input::placeholder { color: var(--t4); }
.wl input:focus { outline: none; border-color: rgba(52,211,153,.55); }
.wl label { position: absolute; left: -9999px; }
.form-note { font-size: 12px; color: var(--t4); margin-top: 10px; }
.ok-note { display: none; font-size: 14px; color: var(--acc); font-weight: 600; margin-top: 12px; }
.cta-card { background: var(--s2); border: 1px solid var(--b2); border-radius: var(--r-panel); padding: 28px; }
.cta-card .t { font-size: 16px; font-weight: 600; color: var(--t1); }
.cta-card ul { list-style: none; margin-top: 16px; }
.cta-card li { font-size: 14px; color: var(--t3); padding: 7px 0; display: flex; gap: 10px; }
.cta-card li::before { content: "~>"; font-family: 'JetBrains Mono', monospace; color: var(--acc); font-size: 12px; }
.cta-card .btn { margin-top: 20px; width: 100%; justify-content: center; }

/* footer */
footer { border-top: 1px solid var(--b1); padding: 30px 0; }
footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font: 500 12px/1.6 'JetBrains Mono', monospace; color: var(--t4); }
footer a { color: var(--t3); }
footer a:hover { color: var(--t1); }

/* ---------- motion: scroll reveal (JS-gated: no-JS visitors see full page) ---------- */
.js .rv { opacity: 0; transform: translateY(14px); transition: opacity .55s var(--ease), transform .55s var(--ease); }
.js .rv.in { opacity: 1; transform: none; }
.rv.d1 { transition-delay: .06s; } .rv.d2 { transition-delay: .12s; } .rv.d3 { transition-delay: .18s; }

/* ---------- responsive ---------- */
@media (max-width: 960px) {
  .hero .wrap, .final .wrap, .formula-grid { grid-template-columns: 1fr; }
  .hero .wrap { padding-top: 56px; padding-bottom: 48px; gap: 40px; }
  .bento { grid-template-columns: 1fr 1fr; }
  .cell.tall { grid-row: auto; grid-column: 1 / -1; }
  .steps { grid-template-columns: 1fr; gap: 22px; }
  .faq-grid { grid-template-columns: 1fr; }
  section { padding: 64px 0; }
}
@media (max-width: 640px) {
  .bento { grid-template-columns: 1fr; }
  .calc .body { grid-template-columns: 1fr; }
  .calc .out { grid-template-columns: 1fr; }
  .nav-r a.lnk { display: none; }
  .strip .wrap { flex-direction: column; gap: 6px; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
  .rv { opacity: 1; transform: none; }
}