/* ==========================================================================
   checkora.xyz — marketing site
   Colors: NexSum Labs palette. Flat surfaces, hairline borders, no gradients.
   Motion rule: every transition/animation is >= 300ms.
   ========================================================================== */

:root {
  --bg: #08090a;
  --bg-raise: #0e0f11;
  --bg-card: #101114;
  --bg-hover: #15161a;
  --ink: #f5f6f7;
  --ink-soft: rgba(245, 246, 247, 0.68);
  --ink-faint: rgba(245, 246, 247, 0.42);
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);
  --accent: #f0460e;
  --accent-bright: #ff7a3d;
  --accent-hover: #ff5a22;
  --accent-soft: rgba(240, 70, 14, 0.12);
  --good: #4ade80;

  --sans: "Geist", "Inter", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --mono: "Geist Mono", "JetBrains Mono", ui-monospace, "SF Mono", monospace;

  --ease: cubic-bezier(0.22, 0.7, 0.2, 1);
  --t: 320ms var(--ease);
  --t-slow: 640ms var(--ease);

  --max: 1240px;
  --gutter: clamp(20px, 4vw, 48px);
  --radius: 20px;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img, svg { display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
::selection { background: var(--accent); color: #fff; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }
.mono { font-family: var(--mono); }
.accent { color: var(--accent); }
.lucide { width: 18px; height: 18px; stroke-width: 1.8; flex: none; }

/* ------------------------------------------------------------ nav */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  transition: background-color var(--t), border-color var(--t), backdrop-filter var(--t);
  border-bottom: 1px solid transparent;
}
.nav.solid {
  background: rgba(8, 9, 10, 0.78);
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
  backdrop-filter: blur(18px) saturate(1.4);
  border-bottom-color: var(--line);
}
.nav-in { height: 72px; display: flex; align-items: center; gap: 32px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 17px; letter-spacing: -0.02em; }
.brand-mark { width: 30px; height: 30px; border-radius: 9px; background: var(--accent); display: grid; place-items: center; transition: transform var(--t); }
.brand:hover .brand-mark { transform: rotate(-8deg) scale(1.04); }
.nav-links { display: flex; gap: 4px; margin: 0 auto; }
.nav-links a {
  font-size: 14.5px; color: var(--ink-soft); padding: 8px 14px; border-radius: 999px;
  transition: color var(--t), background-color var(--t);
}
.nav-links a:hover { color: var(--ink); background: rgba(255, 255, 255, 0.05); }
.nav-cta { display: flex; gap: 10px; align-items: center; }

/* ------------------------------------------------------------ buttons */
.cta {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  height: 50px; padding: 0 24px; border-radius: 999px;
  font-size: 15px; font-weight: 500; letter-spacing: -0.005em; white-space: nowrap;
  transition: background-color var(--t), color var(--t), border-color var(--t), transform var(--t), box-shadow var(--t);
}
.cta .lucide { width: 17px; height: 17px; transition: transform var(--t); }
.cta-primary { background: var(--accent); color: #fff; }
.cta-primary:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: 0 10px 30px -10px rgba(240, 70, 14, 0.6); }
.cta-primary:hover .lucide { transform: translateY(1px); }
.cta-ghost { border: 1px solid var(--line-strong); color: var(--ink); }
.cta-ghost:hover { background: rgba(255, 255, 255, 0.06); border-color: rgba(255, 255, 255, 0.26); transform: translateY(-1px); }
.cta-ghost:hover .lucide { transform: translateX(3px); }
.cta-sm { height: 40px; padding: 0 18px; font-size: 14px; }
.cta-light { background: var(--ink); color: var(--bg); }
.cta-light:hover { background: #fff; transform: translateY(-1px); }

/* ------------------------------------------------------------ hero */
.hero { padding: 168px 0 0; text-align: center; position: relative; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  height: 34px; padding: 0 16px 0 12px; border-radius: 999px;
  border: 1px solid var(--line-strong); background: var(--bg-raise);
  font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.04em; color: var(--ink-soft); white-space: nowrap;
  transition: border-color var(--t), color var(--t);
}
.eyebrow:hover { border-color: rgba(240, 70, 14, 0.5); color: var(--ink); }
.live-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); position: relative; flex: none; }
.live-dot::after {
  content: ""; position: absolute; inset: -4px; border-radius: 50%;
  border: 1.5px solid var(--accent); opacity: 0;
  animation: ping 1800ms var(--ease) infinite;
}
@keyframes ping { 0% { transform: scale(0.5); opacity: 0.9; } 100% { transform: scale(1.7); opacity: 0; } }

.hero h1 {
  margin: 28px auto 0; max-width: 980px;
  font-size: clamp(46px, 7.4vw, 96px); line-height: 0.98; font-weight: 600; letter-spacing: -0.052em;
}
.hero h1 .accent { display: inline-block; }
.hero .lede {
  margin: 28px auto 0; max-width: 660px;
  font-size: clamp(17px, 1.45vw, 20px); line-height: 1.6; color: var(--ink-soft);
}
.hero-ctas { margin-top: 40px; display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.hero-meta {
  margin: 26px auto 0; display: flex; gap: 10px 22px; justify-content: center; flex-wrap: wrap;
  font-family: var(--mono); font-size: 12.5px; color: var(--ink-faint); letter-spacing: 0.02em;
}
.hero-meta span { display: inline-flex; align-items: center; gap: 8px; }
.hero-meta .lucide { width: 14px; height: 14px; color: var(--accent); }

/* ------------------------------------------------------------ live demo */
.demo { margin-top: 88px; position: relative; }
.demo-tabs {
  display: flex; gap: 4px; justify-content: center; flex-wrap: wrap;
  width: fit-content; max-width: 100%; margin: 0 auto 20px;
  padding: 5px; border-radius: 999px; border: 1px solid var(--line); background: var(--bg-raise);
  position: relative;
}
.demo-tabs button {
  position: relative; z-index: 1;
  height: 36px; padding: 0 16px; border-radius: 999px;
  font-size: 13.5px; color: var(--ink-soft); white-space: nowrap;
  display: inline-flex; align-items: center; gap: 8px;
  transition: color var(--t), background-color var(--t);
}
.demo-tabs button .lucide { width: 15px; height: 15px; }
.demo-tabs button:hover { color: var(--ink); }
.demo-tabs button.on { color: var(--ink); background: rgba(255, 255, 255, 0.09); }
.demo-tabs button.on .lucide { color: var(--accent); }

.demo-frame {
  position: relative; margin: 0 auto; max-width: 1232px;
  padding: 12px; border-radius: 26px;
  border: 1px solid var(--line); background: var(--bg-raise);
}
.demo-screen {
  border-radius: 16px; overflow: hidden; background: #0b0c0e;
  border: 1px solid rgba(255, 255, 255, 0.05);
  padding: 0 0 22px;
}
.demo-stage { position: relative; width: 100%; }
.demo-stage > div { transform-origin: top left; width: 1180px; margin: 0 auto; }
.demo-stage .mac { margin: 0 auto; }
.demo-stage .mac-menubar { background: rgba(26, 27, 30, 0.96); }
.demo-stage .mac-desktop { padding: 18px 0 0; }
.demo-hint {
  margin: 20px auto 0; display: flex; gap: 8px; align-items: center; justify-content: center;
  font-family: var(--mono); font-size: 12.5px; color: var(--ink-faint);
}
.demo-hint .lucide { width: 14px; height: 14px; }
.demo-mobile-note { display: none; }

/* ------------------------------------------------------------ sections */
section { position: relative; }
.section { padding: clamp(96px, 12vw, 160px) 0 0; }
.kicker { font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent); }
.h2 { margin: 16px 0 0; font-size: clamp(36px, 4.6vw, 60px); line-height: 1.04; font-weight: 600; letter-spacing: -0.045em; }
.h2 .dim { color: var(--ink-faint); }
.sub { margin: 20px 0 0; max-width: 600px; font-size: 18px; color: var(--ink-soft); }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.section-head > .sub { max-width: 440px; margin-bottom: 6px; }
.section-head.center { flex-direction: column; align-items: center; text-align: center; }
.section-head.center .sub { margin-left: auto; margin-right: auto; }

/* replaces strip */
.replaces { padding-top: 120px; text-align: center; }
.replaces .label { font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-faint); }
.chips { margin: 22px auto 0; max-width: 980px; display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.chip {
  display: inline-flex; align-items: center; gap: 8px; height: 40px; padding: 0 16px;
  border-radius: 999px; border: 1px solid var(--line); background: var(--bg-raise);
  font-size: 14.5px; color: var(--ink-soft);
  transition: border-color var(--t), color var(--t), background-color var(--t), transform var(--t);
}
.chip .lucide { width: 15px; height: 15px; color: var(--ink-faint); transition: color var(--t); }
.chip s { text-decoration: none; }
.chip:hover { border-color: rgba(240, 70, 14, 0.45); color: var(--ink); transform: translateY(-2px); }
.chip:hover .lucide { color: var(--accent); }

/* audiences */
.duo { margin-top: 56px; display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.panel {
  position: relative; border-radius: var(--radius); border: 1px solid var(--line); background: var(--bg-raise);
  padding: clamp(28px, 3.4vw, 48px); display: flex; flex-direction: column; gap: 22px;
  transition: border-color var(--t), background-color var(--t);
}
.panel:hover { border-color: var(--line-strong); }
.panel-top { display: flex; align-items: center; justify-content: space-between; }
.panel-num { font-family: var(--mono); font-size: 12.5px; color: var(--ink-faint); letter-spacing: 0.08em; }
.panel-icon { width: 48px; height: 48px; border-radius: 14px; border: 1px solid var(--line-strong); display: grid; place-items: center; color: var(--accent); }
.panel-icon .lucide { width: 22px; height: 22px; }
.panel h3 { margin: 0; font-size: clamp(26px, 2.4vw, 34px); line-height: 1.12; letter-spacing: -0.035em; font-weight: 600; }
.panel p { margin: 0; color: var(--ink-soft); font-size: 16.5px; }
.ticks { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 12px; }
.ticks li { display: flex; gap: 12px; align-items: flex-start; font-size: 15.5px; color: var(--ink); line-height: 1.5; }
.ticks li .lucide { width: 18px; height: 18px; color: var(--accent); margin-top: 2px; }
.ticks li span { color: var(--ink-soft); }
.panel .go {
  margin-top: auto; align-self: flex-start;
  display: inline-flex; align-items: center; gap: 10px; font-size: 15px; font-weight: 500; color: var(--ink);
  padding: 12px 0 0; border-top: 1px solid var(--line); width: 100%;
  transition: color var(--t);
}
.panel .go .lucide { width: 17px; height: 17px; transition: transform var(--t); color: var(--accent); }
.panel .go:hover { color: var(--accent-bright); }
.panel .go:hover .lucide { transform: translateX(4px); }

/* feature index */
.col-stack { display: flex; flex-direction: column; gap: 16px; }
.index { margin-top: 56px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.group {
  border-radius: var(--radius); border: 1px solid var(--line); background: var(--bg-raise);
  padding: 22px 12px 12px; display: flex; flex-direction: column;
}
.group-h { display: flex; align-items: baseline; justify-content: space-between; padding: 0 12px 12px; }
.group-h b { font-size: 15px; font-weight: 600; letter-spacing: -0.01em; }
.group-h span { font-family: var(--mono); font-size: 12px; color: var(--ink-faint); }
.tool {
  display: grid; grid-template-columns: 36px 1fr 18px; gap: 12px; align-items: center;
  text-align: left; padding: 11px 12px; border-radius: 12px;
  transition: background-color var(--t);
}
.tool:hover { background: rgba(255, 255, 255, 0.045); }
.tool-ic { width: 36px; height: 36px; border-radius: 10px; background: var(--bg-card); border: 1px solid var(--line); display: grid; place-items: center; color: var(--ink-soft); transition: color var(--t), border-color var(--t); }
.tool-ic .lucide { width: 17px; height: 17px; }
.tool:hover .tool-ic { color: var(--accent); border-color: rgba(240, 70, 14, 0.4); }
.tool b { display: block; font-size: 14.5px; font-weight: 500; letter-spacing: -0.005em; line-height: 1.3; }
.tool small { display: block; font-size: 13px; color: var(--ink-faint); line-height: 1.4; margin-top: 2px; }
.tool > .lucide { width: 16px; height: 16px; color: var(--ink-faint); opacity: 0; transform: translateX(-4px); transition: opacity var(--t), transform var(--t), color var(--t); }
.tool:hover > .lucide { opacity: 1; transform: none; color: var(--accent); }

/* numbers band */
.band { margin-top: clamp(96px, 12vw, 160px); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.band-in { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { padding: 44px 28px; border-left: 1px solid var(--line); }
.stat:first-child { border-left: 0; }
.stat b { display: block; font-size: clamp(44px, 5vw, 72px); font-weight: 600; letter-spacing: -0.05em; line-height: 1; font-variant-numeric: tabular-nums; }
.stat span { display: block; margin-top: 12px; color: var(--ink-soft); font-size: 15px; }

/* privacy */
.trio { margin-top: 56px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.cell { border-radius: var(--radius); border: 1px solid var(--line); background: var(--bg-raise); padding: 32px; transition: border-color var(--t); }
.cell:hover { border-color: var(--line-strong); }
.cell .lucide { width: 22px; height: 22px; color: var(--accent); }
.cell h4 { margin: 22px 0 8px; font-size: 19px; letter-spacing: -0.02em; font-weight: 600; }
.cell p { margin: 0; color: var(--ink-soft); font-size: 15.5px; }

/* pricing */
.price-wrap { margin-top: 56px; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 16px; align-items: stretch; }
.price-card { border-radius: 24px; border: 1px solid var(--line-strong); background: var(--bg-raise); padding: clamp(32px, 4vw, 52px); display: flex; flex-direction: column; }
.price-top { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.tag { font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); border: 1px solid rgba(240, 70, 14, 0.4); background: var(--accent-soft); padding: 6px 12px; border-radius: 999px; }
.price { margin-top: 30px; display: flex; align-items: flex-end; gap: 14px; }
.price b { font-size: clamp(76px, 9vw, 120px); line-height: 0.85; font-weight: 600; letter-spacing: -0.06em; }
.price span { color: var(--ink-soft); font-size: 16px; padding-bottom: 8px; line-height: 1.4; }
.price-card .ticks { margin-top: 34px; display: grid; grid-template-columns: 1fr 1fr; gap: 14px 24px; }
.price-ctas { margin-top: 40px; display: flex; gap: 12px; flex-wrap: wrap; }
.price-note { margin-top: 18px; font-size: 13.5px; color: var(--ink-faint); }
.side-card { border-radius: 24px; border: 1px solid var(--line); background: var(--bg-raise); padding: clamp(28px, 3vw, 40px); display: flex; flex-direction: column; gap: 18px; }
.side-card h4 { margin: 0; font-size: 20px; font-weight: 600; letter-spacing: -0.02em; }
.cmp { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.cmp td { padding: 12px 0; border-top: 1px solid var(--line); color: var(--ink-soft); }
.cmp td:last-child { text-align: right; color: var(--ink); font-variant-numeric: tabular-nums; font-family: var(--mono); font-size: 13.5px; }
.cmp tr.total td { color: var(--ink); font-weight: 600; }
.cmp tr.us td { color: var(--accent); font-weight: 600; }
.side-card small { color: var(--ink-faint); font-size: 12.5px; line-height: 1.5; }

/* faq */
.faq { margin-top: 48px; border-top: 1px solid var(--line); }
.qa { border-bottom: 1px solid var(--line); }
.qa button {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px;
  text-align: left; padding: 26px 0; font-size: clamp(17px, 1.5vw, 20px); font-weight: 500; letter-spacing: -0.015em;
  transition: color var(--t);
}
.qa button:hover { color: var(--accent-bright); }
.qa .pm { width: 34px; height: 34px; flex: none; border-radius: 50%; border: 1px solid var(--line-strong); display: grid; place-items: center; transition: transform var(--t), border-color var(--t), background-color var(--t); }
.qa .pm .lucide { width: 16px; height: 16px; }
.qa.open .pm { transform: rotate(45deg); border-color: var(--accent); background: var(--accent); color: #fff; }
.qa .a { display: grid; grid-template-rows: 0fr; transition: grid-template-rows var(--t-slow); }
.qa.open .a { grid-template-rows: 1fr; }
.qa .a > div { overflow: hidden; }
.qa .a p { margin: 0; padding: 0 64px 28px 0; color: var(--ink-soft); font-size: 16.5px; opacity: 0; transform: translateY(-6px); transition: opacity var(--t), transform var(--t); }
.qa.open .a p { opacity: 1; transform: none; }
.qa .a p b { color: var(--ink); font-weight: 500; }
.faq-grid { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 64px; align-items: start; }
.faq-grid .faq { margin-top: 8px; }

/* final cta */
.final { margin-top: clamp(96px, 12vw, 160px); text-align: center; border-top: 1px solid var(--line); padding: clamp(96px, 11vw, 150px) 0; }
.final h2 { margin: 0 auto; max-width: 900px; font-size: clamp(40px, 6vw, 80px); line-height: 1; letter-spacing: -0.05em; font-weight: 600; }
.final p { margin: 24px auto 0; color: var(--ink-soft); max-width: 520px; }
.final .hero-ctas { margin-top: 36px; }

/* footer */
footer { border-top: 1px solid var(--line); padding: 36px 0 44px; }
.foot { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.foot-links { display: flex; gap: 6px; flex-wrap: wrap; }
.foot-links a { font-size: 14px; color: var(--ink-faint); padding: 6px 12px; border-radius: 999px; transition: color var(--t), background-color var(--t); }
.foot-links a:hover { color: var(--ink); background: rgba(255, 255, 255, 0.05); }
.foot small { color: var(--ink-faint); font-size: 13px; }
.foot small a { color: var(--ink-soft); transition: color var(--t); }
.foot small a:hover { color: var(--accent); }

/* reveal on scroll */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 700ms var(--ease), transform 700ms var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: 80ms; }
.reveal.d2 { transition-delay: 160ms; }
.reveal.d3 { transition-delay: 240ms; }
.hero .reveal { transition-duration: 900ms; }

/* legal pages */
.legal { padding: 150px 0 40px; }
.legal .wrap { max-width: 780px; }
.legal h1 { margin: 16px 0 8px; font-size: clamp(40px, 5vw, 60px); line-height: 1.04; letter-spacing: -0.045em; font-weight: 600; }
.legal .updated { font-family: var(--mono); font-size: 12.5px; color: var(--ink-faint); letter-spacing: 0.04em; }
.legal .body { margin-top: 48px; border-top: 1px solid var(--line); padding-top: 12px; }
.legal h2 { margin: 40px 0 10px; font-size: 21px; letter-spacing: -0.02em; font-weight: 600; }
.legal p, .legal li { color: var(--ink-soft); font-size: 16.5px; }
.legal li { margin: 6px 0; }
.legal b { color: var(--ink); font-weight: 500; }
.legal a { color: var(--accent-bright); border-bottom: 1px solid rgba(255, 122, 61, 0.35); transition: border-color var(--t), color var(--t); }
.legal a:hover { color: var(--ink); border-color: var(--ink); }

/* ------------------------------------------------------------ responsive */
@media (max-width: 1080px) {
  .index { grid-template-columns: 1fr 1fr; }
  .price-wrap { grid-template-columns: 1fr; }
  .faq-grid { grid-template-columns: 1fr; gap: 16px; }
}
@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-cta { margin-left: auto; }
  .duo, .trio { grid-template-columns: 1fr; }
  .band-in { grid-template-columns: 1fr 1fr; }
  .stat:nth-child(3) { border-left: 0; }
  .stat:nth-child(n + 3) { border-top: 1px solid var(--line); }
  .demo-tabs { border-radius: 20px; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .hero { padding-top: 132px; }
  .eyebrow { font-size: 11px; letter-spacing: 0; padding: 0 12px 0 10px; gap: 8px; }
  .hero-meta { font-size: 11.5px; }
  .index { grid-template-columns: 1fr; }
  .price-card .ticks { grid-template-columns: 1fr; }
  .stat { padding: 32px 20px; }
  .nav-cta .cta-ghost { display: none; }
  .demo-tabs { display: none; }
  .demo-frame { padding: 6px; border-radius: 16px; }
  .demo-screen { border-radius: 11px; padding-bottom: 8px; }
  .demo-mobile-note { display: flex; }
  .qa .a p { padding-right: 0; }
  .hero-ctas .cta { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { transform: none; transition: opacity 400ms linear; }
  .live-dot::after { animation: none; }
}

/* ==========================================================================
   Ambient background — soft radial light so the page never feels empty.
   All motion here is slow (>= 300ms, mostly 14–22s drifts).
   ========================================================================== */
main { position: relative; isolation: isolate; overflow-x: clip; }
html, body { overflow-x: clip; }

/* hero: orange key light from the top + faint grid texture */
.hero { isolation: isolate; }
.hero::before {
  content: ""; position: absolute; z-index: -2; pointer-events: none;
  left: 50%; top: -260px; width: 1800px; height: 1400px; transform: translateX(-50%);
  background:
    radial-gradient(38% 30% at 50% 22%, rgba(240, 70, 14, 0.26), transparent 70%),
    radial-gradient(26% 22% at 78% 30%, rgba(255, 122, 61, 0.12), transparent 70%),
    radial-gradient(24% 20% at 22% 34%, rgba(255, 255, 255, 0.05), transparent 70%);
  animation: glowDrift 18s ease-in-out infinite alternate;
}
.hero::after {
  content: ""; position: absolute; z-index: -1; pointer-events: none;
  inset: 0 0 auto 0; height: 980px;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  background-position: center top;
  -webkit-mask-image: radial-gradient(60% 55% at 50% 30%, #000 20%, transparent 75%);
  mask-image: radial-gradient(60% 55% at 50% 30%, #000 20%, transparent 75%);
}
@keyframes glowDrift {
  0% { transform: translateX(-50%) translateY(0) scale(1); opacity: 0.9; }
  100% { transform: translateX(-48%) translateY(40px) scale(1.06); opacity: 1; }
}

/* the app sits on a pool of warm light */
.demo { isolation: isolate; }
.demo::before {
  content: ""; position: absolute; z-index: -1; pointer-events: none;
  left: 50%; top: 18%; width: 1500px; height: 1000px; transform: translateX(-50%);
  background:
    radial-gradient(45% 40% at 50% 50%, rgba(240, 70, 14, 0.22), transparent 70%),
    radial-gradient(30% 25% at 50% 95%, rgba(255, 122, 61, 0.10), transparent 70%);
}
.demo-frame { box-shadow: 0 40px 120px -30px rgba(240, 70, 14, 0.35), 0 0 0 1px rgba(255, 255, 255, 0.02); }

/* section key lights */
#checkup::before, #tools::before, #privacy::before, #pricing::before, #faq::before, .final::before, .replaces::before {
  content: ""; position: absolute; z-index: -1; pointer-events: none;
}
.replaces::before {
  left: 50%; top: 40px; width: 1100px; height: 420px; transform: translateX(-50%);
  background: radial-gradient(50% 50% at 50% 50%, rgba(255, 255, 255, 0.06), transparent 70%);
}
#checkup::before {
  left: -320px; top: 60px; width: 1100px; height: 900px;
  background: radial-gradient(50% 50% at 50% 50%, rgba(240, 70, 14, 0.2), transparent 70%);
}
#tools::before {
  right: -360px; top: 180px; width: 1200px; height: 1100px;
  background:
    radial-gradient(45% 40% at 50% 40%, rgba(240, 70, 14, 0.17), transparent 70%),
    radial-gradient(35% 30% at 20% 80%, rgba(255, 255, 255, 0.05), transparent 70%);
}
#privacy::before {
  left: -260px; top: 120px; width: 1000px; height: 800px;
  background: radial-gradient(50% 50% at 50% 50%, rgba(255, 122, 61, 0.15), transparent 70%);
}
#pricing::before {
  left: 50%; top: 220px; width: 1500px; height: 1000px; transform: translateX(-50%);
  background:
    radial-gradient(38% 38% at 38% 50%, rgba(240, 70, 14, 0.18), transparent 70%),
    radial-gradient(28% 30% at 75% 45%, rgba(255, 255, 255, 0.04), transparent 70%);
}
#faq::before {
  right: -300px; top: 100px; width: 1000px; height: 900px;
  background: radial-gradient(50% 50% at 50% 50%, rgba(240, 70, 14, 0.13), transparent 70%);
}
.final { position: relative; overflow: hidden; isolation: isolate; }
.final::before {
  left: 50%; bottom: -520px; width: 1700px; height: 1100px; transform: translateX(-50%);
  background:
    radial-gradient(40% 42% at 50% 50%, rgba(240, 70, 14, 0.30), transparent 70%),
    radial-gradient(22% 22% at 50% 40%, rgba(255, 122, 61, 0.14), transparent 70%);
  animation: glowDrift 22s ease-in-out infinite alternate;
}
.final::after {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 64px 64px; background-position: center center;
  -webkit-mask-image: radial-gradient(55% 60% at 50% 100%, #000 10%, transparent 75%);
  mask-image: radial-gradient(55% 60% at 50% 100%, #000 10%, transparent 75%);
}
.band { position: relative; isolation: isolate; }
.band::before {
  content: ""; position: absolute; inset: -80px 0; z-index: -1; pointer-events: none;
  background: radial-gradient(40% 60% at 50% 50%, rgba(240, 70, 14, 0.12), transparent 70%);
}

/* cards: soft top-left sheen + orange corner light on the price card */
.panel, .group, .cell, .side-card {
  background: radial-gradient(120% 90% at 0% 0%, rgba(255, 255, 255, 0.035), transparent 55%), var(--bg-raise);
}
.price-card {
  position: relative;
  background:
    radial-gradient(90% 70% at 100% 0%, rgba(240, 70, 14, 0.16), transparent 60%),
    radial-gradient(80% 60% at 0% 100%, rgba(255, 255, 255, 0.03), transparent 60%),
    var(--bg-raise);
}

/* cursor spotlight on cards */
.spot { position: relative; overflow: hidden; }
.spot > * { position: relative; z-index: 1; }
.spot::before {
  content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background: radial-gradient(380px circle at var(--mx, 50%) var(--my, 50%), rgba(240, 70, 14, 0.12), transparent 65%);
  opacity: 0; transition: opacity 420ms var(--ease);
}
.spot:hover::before { opacity: 1; }

@media (max-width: 860px) {
  .hero::before { width: 1100px; height: 1000px; }
  .demo::before { width: 900px; height: 700px; }
}
@media (prefers-reduced-motion: reduce) {
  .hero::before, .final::before { animation: none; }
}