/* ChirPragya.ai marketing site
   Theme: locked dark. Accent: clinical teal (single accent, used everywhere).
   Radius system: cards 16px, buttons pill, inputs 10px.
   Type: Geist Sans (display + body), Geist Mono (numbers + small labels). */

/* ---------- Fonts (self-hosted) ---------- */
@font-face { font-family: 'Geist'; src: url('fonts/geist-sans-latin-400-normal.woff2') format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Geist'; src: url('fonts/geist-sans-latin-500-normal.woff2') format('woff2'); font-weight: 500; font-display: swap; }
@font-face { font-family: 'Geist'; src: url('fonts/geist-sans-latin-600-normal.woff2') format('woff2'); font-weight: 600; font-display: swap; }
@font-face { font-family: 'Geist'; src: url('fonts/geist-sans-latin-700-normal.woff2') format('woff2'); font-weight: 700; font-display: swap; }
@font-face { font-family: 'Geist Mono'; src: url('fonts/geist-mono-latin-400-normal.woff2') format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Geist Mono'; src: url('fonts/geist-mono-latin-500-normal.woff2') format('woff2'); font-weight: 500; font-display: swap; }

/* ---------- Tokens ---------- */
:root {
  --bg: #0b100f;            /* off-black, green undertone */
  --bg-raise: #101615;      /* raised surface */
  --bg-panel: #141b1a;      /* card surface */
  --line: rgba(148, 178, 170, 0.14);
  --line-strong: rgba(148, 178, 170, 0.26);
  --text: #eef4f2;
  --text-2: #a8b8b3;        /* secondary */
  --text-3: #6f7f7a;        /* tertiary */
  --accent: #3ecfa5;        /* clinical teal */
  --accent-deep: #178a6b;
  --accent-dim: rgba(62, 207, 165, 0.14);
  --accent-line: rgba(62, 207, 165, 0.35);
  --on-accent: #06231a;
  --radius-card: 16px;
  --radius-input: 10px;
  --font-sans: 'Geist', -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'Geist Mono', ui-monospace, 'SF Mono', monospace;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --nav-h: 68px;
  /* theme-aware media framing */
  --scrim-c: 11, 16, 15;          /* rgb triplet used by scrims over imagery */
  --nav-bg: rgba(11, 16, 15, 0.82);
  --menu-bg: rgba(11, 16, 15, 0.97);
  --soft: rgba(255, 255, 255, 0.03);   /* subtle raised fill */
  --input-bg: rgba(255, 255, 255, 0.04);
  --on-media: #c6d4cf;            /* secondary text over scrimmed imagery */
  --err: #ff9d8a;
  --err-line: #c96a55;
  /* z-scale: 10 nav, 20 mobile menu, 30 modal (unused) */
  color-scheme: dark;
}

[data-theme="light"] {
  --bg: #f3f6f5;
  --bg-raise: #fbfcfc;
  --bg-panel: #ffffff;
  --line: rgba(24, 66, 55, 0.13);
  --line-strong: rgba(24, 66, 55, 0.24);
  --text: #122019;
  --text-2: #47594f;
  --text-3: #75857c;
  --accent: #0f9d76;
  --accent-deep: #0b7a5c;
  --accent-dim: rgba(15, 157, 118, 0.10);
  --accent-line: rgba(15, 157, 118, 0.38);
  --on-accent: #f2fffa;
  --scrim-c: 243, 246, 245;
  --nav-bg: rgba(243, 246, 245, 0.85);
  --menu-bg: rgba(243, 246, 245, 0.98);
  --soft: rgba(18, 32, 25, 0.035);
  --input-bg: rgba(18, 32, 25, 0.04);
  --on-media: #3c4f47;
  --err: #b3361f;
  --err-line: #c96a55;
  color-scheme: light;
}
/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
::selection { background: var(--accent); color: var(--on-accent); }

.wrap { max-width: 1240px; margin: 0 auto; padding: 0 24px; }

h1, h2, h3 { font-weight: 600; letter-spacing: -0.03em; line-height: 1.08; text-wrap: balance; }
h1 { font-size: clamp(2.4rem, 5.4vw, 4.2rem); }
h2 { font-size: clamp(1.8rem, 3.6vw, 2.75rem); }
h3 { font-size: 1.15rem; letter-spacing: -0.01em; }
.lede { color: var(--text-2); font-size: 1.125rem; max-width: 58ch; }

.mono { font-family: var(--font-mono); }

/* Icons: Phosphor SVGs applied as CSS masks so currentColor tints them.
   Usage: <i class="icn" style="--icn:url(assets/icons/microphone.svg)"></i> */
.icn {
  display: inline-block; width: 22px; height: 22px; flex: none;
  background-color: currentColor;
  -webkit-mask: var(--icn) no-repeat center / contain;
  mask: var(--icn) no-repeat center / contain;
}

/* ---------- Buttons (pill) ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px; border-radius: 999px;
  font-weight: 600; font-size: 0.95rem; white-space: nowrap;
  transition: transform 0.25s var(--ease-out), background 0.25s, border-color 0.25s, color 0.25s;
}
.btn:active { transform: translateY(1px) scale(0.98); }
.btn .icn { width: 17px; height: 17px; transition: transform 0.25s var(--ease-out); }
.btn:hover .icn { transform: translateX(3px); }
.btn-solid { background: var(--accent); color: var(--on-accent); }
.btn-solid:hover { filter: brightness(1.1); }
.btn-ghost { border: 1px solid var(--line-strong); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent-line); color: var(--accent); }
.btn-lg { padding: 15px 30px; font-size: 1.02rem; }

/* ---------- Nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 10;
  height: var(--nav-h);
  transition: background 0.3s, border-color 0.3s, backdrop-filter 0.3s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: var(--nav-bg);
  backdrop-filter: blur(14px) saturate(150%);
  -webkit-backdrop-filter: blur(14px) saturate(150%);
  border-bottom-color: var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: var(--nav-h); }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 1.05rem; letter-spacing: -0.02em; }
.brand small { color: var(--text-3); font-weight: 500; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { color: var(--text-2); font-size: 0.93rem; font-weight: 500; transition: color 0.2s; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text); }
.nav-cta { display: flex; align-items: center; gap: 16px; }
.nav-burger { display: none; padding: 8px; color: var(--text); }
.nav-burger .icn { width: 24px; height: 24px; }

/* Mobile menu */
.mobile-menu {
  display: none; position: fixed; inset: var(--nav-h) 0 auto 0; z-index: 20;
  background: var(--menu-bg); border-bottom: 1px solid var(--line);
  padding: 18px 24px 26px; flex-direction: column; gap: 4px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a { padding: 12px 4px; font-size: 1.05rem; color: var(--text-2); border-bottom: 1px solid var(--line); }
.mobile-menu a:last-child { border-bottom: 0; }

/* ---------- Cinematic hero ---------- */
.hero-cine {
  position: relative; min-height: 100dvh;
  display: flex; align-items: flex-end;
  overflow: hidden;
}
.hero-media { position: absolute; inset: 0; }
.hero-media video {
  width: 100%; height: 100%; object-fit: cover;
  transform: scale(1.04);
}
.hero-scrim {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(var(--scrim-c), 0.55) 0%, rgba(var(--scrim-c), 0.05) 34%, rgba(var(--scrim-c), 0.62) 74%, var(--bg) 100%),
    linear-gradient(90deg, rgba(var(--scrim-c), 0.66) 0%, rgba(var(--scrim-c), 0.18) 55%, rgba(var(--scrim-c), 0) 100%);
}
.hero-cine-inner {
  position: relative; width: 100%;
  padding-bottom: clamp(64px, 10vh, 120px);
}
.hero-cine h1 { max-width: 24ch; font-size: clamp(2.5rem, 4.9vw, 4.1rem); font-weight: 650; }
.hero-cine .lede { margin: 24px 0 36px; max-width: 46ch; color: var(--on-media); }
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; }

/* frosted-glass button (web glassmorphism approximation) for use over media */
.btn-glass {
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18);
}
.btn-glass:hover { background: rgba(255, 255, 255, 0.15); border-color: rgba(255, 255, 255, 0.42); }
@media (prefers-reduced-transparency: reduce) {
  .btn-glass { background: rgba(11, 16, 15, 0.9); backdrop-filter: none; -webkit-backdrop-filter: none; }
}

/* word-by-word headline reveal */
.split-words .w {
  display: inline-block; opacity: 0; transform: translateY(0.6em) rotate(1.5deg);
  transition: opacity 0.65s var(--ease-out), transform 0.65s var(--ease-out);
  transition-delay: calc(var(--wi) * 0.07s + 0.1s);
}
.split-words.in .w { opacity: 1; transform: none; }

/* ---------- Manifesto ---------- */
.manifesto { padding: 140px 0 120px; }
.manifesto-line {
  font-size: clamp(1.9rem, 4.2vw, 3.4rem);
  font-weight: 600; letter-spacing: -0.03em; line-height: 1.12;
  max-width: 22ch; text-wrap: balance;
}
.manifesto-sub { margin-top: 26px; color: var(--text-2); font-size: 1.1rem; max-width: 56ch; }

/* ---------- Chapters (sticky cinematic stack) ---------- */
.chapters { position: relative; }
.chapter { position: sticky; top: 0; min-height: 100dvh; display: flex; align-items: center; padding: 0; }
.chapter:nth-child(1) { z-index: 1; }
.chapter:nth-child(2) { z-index: 2; }
.chapter:nth-child(3) { z-index: 3; }
.chapter-card {
  position: relative; width: 100%; min-height: 100dvh;
  display: grid; grid-template-columns: minmax(340px, 44%) 1fr;
  align-items: center; overflow: hidden;
  background: var(--bg);
  border-top: 1px solid var(--line);
}
.chapter-media { position: absolute; inset: 0; }
.chapter-media img {
  width: 100%; height: 100%; object-fit: cover;
  transform: scale(1.06);
}
.chapter-card::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(var(--scrim-c), 0.94) 0%, rgba(var(--scrim-c), 0.74) 38%, rgba(var(--scrim-c), 0.12) 75%, rgba(var(--scrim-c), 0.35) 100%);
}
.chapter-copy {
  position: relative; z-index: 1;
  padding: 0 24px 0 max(24px, calc((100vw - 1240px) / 2 + 24px));
  max-width: 640px;
}
.chapter-copy h2 { font-size: clamp(1.9rem, 3.6vw, 2.9rem); margin-bottom: 18px; }
.chapter-copy p { color: var(--on-media); font-size: 1.08rem; max-width: 44ch; }
.chapter-copy h2, .chapter-copy p {
  opacity: 0; transform: translateY(28px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}
.chapter-copy p { transition-delay: 0.12s; }
.chapter.reveal-in .chapter-copy h2, .chapter.reveal-in .chapter-copy p { opacity: 1; transform: none; }

/* gentle parallax + settle on scroll where scroll-driven animations are supported */
@supports (animation-timeline: view()) {
  @media (prefers-reduced-motion: no-preference) {
    .chapter-media img {
      animation: chapterPan linear both;
      animation-timeline: view();
    }
    @keyframes chapterPan {
      from { transform: scale(1.12) translateY(3.5%); }
      to { transform: scale(1.06) translateY(-3.5%); }
    }
  }
}

/* ---------- CTA over cinematic still ---------- */
.cta-cine {
  background:
    linear-gradient(180deg, var(--bg) 0%, rgba(var(--scrim-c), 0.86) 30%, rgba(var(--scrim-c), 0.86) 100%),
    url('img/hero-poster.jpg') center 30% / cover no-repeat;
  border-top: 1px solid var(--line);
}

/* ---------- Live product preview (real scripted mini component) ---------- */
.demo {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-card);
  background: linear-gradient(165deg, var(--bg-panel), var(--bg-raise));
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.05);
  overflow: hidden;
}
.demo-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px; border-bottom: 1px solid var(--line);
}
.demo-title { display: flex; align-items: center; gap: 10px; font-size: 0.88rem; color: var(--text-2); font-weight: 500; }
.demo-title .icn { width: 18px; height: 18px; color: var(--accent); }
.demo-live { font-family: var(--font-mono); font-size: 0.72rem; color: var(--accent); letter-spacing: 0.08em; }
.demo-body { display: grid; grid-template-columns: 1fr 1fr; min-height: 380px; }
.demo-col { padding: 18px; }
.demo-col + .demo-col { border-left: 1px solid var(--line); }
.demo-label { font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-3); margin-bottom: 14px; }

/* waveform */
.wave { display: flex; align-items: center; gap: 3px; height: 34px; margin-bottom: 16px; }
.wave i {
  width: 3px; border-radius: 2px; background: var(--accent);
  height: 20%; opacity: 0.85;
  animation: waveMove 1.15s ease-in-out infinite;
  animation-delay: calc(var(--i) * 0.09s);
}
@keyframes waveMove { 0%, 100% { height: 14%; } 50% { height: var(--h, 80%); } }

.demo-lines { display: flex; flex-direction: column; gap: 10px; }
.demo-line {
  font-size: 0.86rem; color: var(--text-2); line-height: 1.5;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 12px; padding: 8px 12px;
  opacity: 0; transform: translateY(8px);
  transition: opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out);
}
.demo-line.show { opacity: 1; transform: none; }
.demo-line .who { color: var(--accent); font-weight: 600; font-size: 0.78rem; display: block; margin-bottom: 2px; }

.note-field { margin-bottom: 14px; opacity: 0.35; transition: opacity 0.5s; }
.note-field.filled { opacity: 1; }
.note-field b { display: block; font-size: 0.78rem; font-weight: 600; color: var(--text-3); margin-bottom: 5px; }
.note-field.filled b { color: var(--text-2); }
.note-val { font-size: 0.88rem; color: var(--text); min-height: 1.3em; }
.note-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  font-size: 0.78rem; padding: 4px 10px; border-radius: 999px;
  border: 1px solid var(--accent-line); background: var(--accent-dim); color: var(--accent);
  opacity: 0; transform: scale(0.9);
  transition: opacity 0.4s var(--ease-out), transform 0.4s var(--ease-out);
}
.chip.show { opacity: 1; transform: none; }
.demo-foot {
  padding: 12px 18px; border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-3);
}
.demo-foot .ok { color: var(--accent); }

/* ---------- Sections ---------- */
section { padding: 110px 0; position: relative; }
.sec-head { max-width: 720px; margin-bottom: 56px; }
.sec-head .lede { margin-top: 18px; }
.eyebrow {
  font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 16px; display: block;
}

/* Pillars: asymmetric 2-col */
.pillars { display: grid; grid-template-columns: 1.35fr 1fr; gap: 20px; }
.pillar {
  border: 1px solid var(--line); border-radius: var(--radius-card);
  padding: 34px; background: var(--bg-raise);
  display: flex; flex-direction: column; gap: 14px; justify-content: flex-end;
  min-height: 250px; position: relative; overflow: hidden;
}
.pillar .icn { width: 28px; height: 28px; color: var(--accent); }
.pillar h3 { font-size: 1.3rem; }
.pillar p { color: var(--text-2); font-size: 0.97rem; max-width: 48ch; }
.pillar-wide { grid-row: span 2; justify-content: flex-end; min-height: 0; background:
  radial-gradient(120% 90% at 85% 0%, rgba(62, 207, 165, 0.12), transparent 60%), var(--bg-raise); }
.pillar-tall { }

/* ---------- Modules bento ---------- */
.bento { display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px; }
.cell {
  border: 1px solid var(--line); border-radius: var(--radius-card);
  background: var(--bg-panel); padding: 28px;
  display: flex; flex-direction: column; gap: 12px;
  transition: border-color 0.3s, transform 0.35s var(--ease-out);
  position: relative; overflow: hidden;
}
.cell:hover { border-color: var(--accent-line); transform: translateY(-3px); }
.cell .icn { width: 26px; height: 26px; color: var(--accent); }
.cell h3 { margin-top: 4px; }
.cell p { color: var(--text-2); font-size: 0.93rem; }
.cell-3 { grid-column: span 3; }
.cell-2 { grid-column: span 2; }
.cell-4 { grid-column: span 4; }
.cell-feature {
  background: radial-gradient(130% 110% at 0% 0%, rgba(62, 207, 165, 0.14), transparent 55%), var(--bg-panel);
}
.cell-grid-bg {
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 26px 26px; background-color: var(--bg-panel);
}
.cell-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 8px; }
.cell-tags span {
  font-family: var(--font-mono); font-size: 0.72rem; padding: 4px 10px;
  border-radius: 999px; border: 1px solid var(--line-strong); color: var(--text-2);
}

/* ---------- Security ---------- */
.security-panel {
  border: 1px solid var(--line-strong); border-radius: var(--radius-card);
  background: linear-gradient(180deg, var(--bg-raise), var(--bg-panel));
  padding: 56px; display: grid; grid-template-columns: 1fr 1fr; gap: 56px;
}
.sec-list { display: flex; flex-direction: column; }
.sec-item { display: flex; gap: 16px; padding: 18px 0; border-top: 1px solid var(--line); }
.sec-item:first-child { border-top: 0; padding-top: 0; }
.sec-item .icn { width: 22px; height: 22px; color: var(--accent); margin-top: 3px; }
.sec-item h3 { font-size: 1rem; margin-bottom: 4px; }
.sec-item p { color: var(--text-2); font-size: 0.9rem; }

/* ---------- Deploy split ---------- */
.deploy { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.deploy-card {
  border: 1px solid var(--line); border-radius: var(--radius-card);
  padding: 38px; background: var(--bg-raise);
}
.deploy-card .icn { width: 26px; height: 26px; color: var(--accent); margin-bottom: 18px; }
.deploy-card h3 { font-size: 1.25rem; margin-bottom: 10px; }
.deploy-card p { color: var(--text-2); font-size: 0.95rem; margin-bottom: 18px; }
.deploy-card ul { list-style: none; display: flex; flex-direction: column; gap: 9px; }
.deploy-card li { display: flex; gap: 10px; align-items: flex-start; font-size: 0.9rem; color: var(--text-2); }
.deploy-card li .icn { width: 16px; height: 16px; margin: 4px 0 0; color: var(--accent); }
.deploy-note {
  margin-top: 18px; border: 1px solid var(--accent-line); border-radius: var(--radius-card);
  background: var(--accent-dim); padding: 22px 28px; display: flex; gap: 14px; align-items: center;
}
.deploy-note .icn { width: 22px; height: 22px; color: var(--accent); flex: none; }
.deploy-note p { font-size: 0.93rem; color: var(--text); }

/* ---------- CTA band ---------- */
.cta-band { text-align: center; padding: 130px 0; position: relative; overflow: hidden; }
.cta-band::before {
  content: ""; position: absolute; left: 50%; bottom: -320px; width: 780px; height: 620px;
  transform: translateX(-50%); border-radius: 50%;
  background: radial-gradient(circle, rgba(62, 207, 165, 0.16), transparent 62%);
  pointer-events: none;
}
.cta-band h2 { max-width: 16ch; margin: 0 auto 18px; }
.cta-band .lede { margin: 0 auto 36px; }

/* ---------- Footer ---------- */
footer { border-top: 1px solid var(--line); padding: 56px 0 40px; }
.foot-grid { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.foot-brand p { color: var(--text-3); font-size: 0.88rem; margin-top: 12px; max-width: 34ch; }
.foot-cols { display: flex; gap: 72px; flex-wrap: wrap; }
.foot-col h4 { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-3); margin-bottom: 14px; font-family: var(--font-mono); font-weight: 500; }
.foot-col a { display: block; color: var(--text-2); font-size: 0.92rem; padding: 5px 0; transition: color 0.2s; }
.foot-col a:hover { color: var(--text); }
.foot-base { margin-top: 48px; padding-top: 22px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; color: var(--text-3); font-size: 0.83rem; }

/* ---------- Pricing configurator ---------- */
.pricing-hero { padding: calc(var(--nav-h) + 90px) 0 40px; }
.config-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 26px; align-items: start; }
.config-group { margin-bottom: 34px; }
.config-group > h3 { margin-bottom: 6px; }
.config-group > p { color: var(--text-2); font-size: 0.92rem; margin-bottom: 18px; }
.opt-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.opt {
  border: 1px solid var(--line); border-radius: var(--radius-card);
  background: var(--bg-raise); padding: 20px; text-align: left;
  display: flex; gap: 14px; align-items: flex-start; width: 100%;
  transition: border-color 0.25s, background 0.25s, transform 0.3s var(--ease-out);
}
.opt:hover { border-color: var(--line-strong); }
.opt[aria-pressed="true"], .opt[aria-checked="true"] {
  border-color: var(--accent-line); background: var(--accent-dim);
}
.opt .icn { width: 22px; height: 22px; color: var(--accent); margin-top: 2px; }
.opt b { display: block; font-size: 0.98rem; font-weight: 600; margin-bottom: 3px; }
.opt span { display: block; color: var(--text-2); font-size: 0.85rem; line-height: 1.45; }
.opt .tick {
  margin-left: auto; width: 20px; height: 20px; border-radius: 50%;
  border: 1px solid var(--line-strong); flex: none; margin-top: 2px;
  display: grid; place-items: center; transition: background 0.2s, border-color 0.2s;
}
.opt .tick .icn { width: 12px; height: 12px; color: var(--on-accent); margin: 0; opacity: 0; }
.opt[aria-pressed="true"] .tick, .opt[aria-checked="true"] .tick { background: var(--accent); border-color: var(--accent); }
.opt[aria-pressed="true"] .tick .icn, .opt[aria-checked="true"] .tick .icn { opacity: 1; }

.summary {
  position: sticky; top: calc(var(--nav-h) + 20px);
  border: 1px solid var(--line-strong); border-radius: var(--radius-card);
  background: linear-gradient(175deg, var(--bg-panel), var(--bg-raise)); padding: 28px;
}
.summary h3 { margin-bottom: 4px; }
.summary > p { color: var(--text-2); font-size: 0.88rem; margin-bottom: 20px; }
.summary-list { display: flex; flex-direction: column; gap: 8px; margin-bottom: 24px; min-height: 120px; }
.summary-item {
  display: flex; align-items: center; gap: 10px; font-size: 0.9rem;
  color: var(--text-2); padding: 8px 12px; border-radius: var(--radius-input);
  background: var(--soft); border: 1px solid var(--line);
}
.summary-item .icn { width: 15px; height: 15px; color: var(--accent); }
.summary-empty { color: var(--text-3); font-size: 0.88rem; padding: 8px 2px; }
.summary .btn { width: 100%; justify-content: center; }
.summary-foot { margin-top: 14px; color: var(--text-3); font-size: 0.8rem; text-align: center; }

/* FAQ */
.faq { max-width: 760px; }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary {
  list-style: none; cursor: pointer; padding: 22px 0;
  display: flex; justify-content: space-between; align-items: center; gap: 20px;
  font-weight: 600; font-size: 1.02rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary .icn { width: 18px; height: 18px; color: var(--text-3); transition: transform 0.3s var(--ease-out); flex: none; }
.faq details[open] summary .icn { transform: rotate(45deg); color: var(--accent); }
.faq details p { color: var(--text-2); font-size: 0.95rem; padding: 0 0 22px; max-width: 62ch; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 64px; align-items: start; }
.contact-copy .lede { margin: 20px 0 34px; }
.contact-direct {
  border: 1px solid var(--line); border-radius: var(--radius-card);
  background: var(--bg-raise); padding: 24px; display: flex; gap: 16px; align-items: center;
}
.contact-direct .icn { width: 24px; height: 24px; color: var(--accent); flex: none; }
.contact-direct b { display: block; font-size: 0.9rem; }
.contact-direct a { color: var(--accent); font-size: 0.95rem; }

.form-card {
  border: 1px solid var(--line-strong); border-radius: var(--radius-card);
  background: linear-gradient(175deg, var(--bg-panel), var(--bg-raise)); padding: 36px;
}
.field { margin-bottom: 20px; }
.field label { display: block; font-size: 0.88rem; font-weight: 600; margin-bottom: 7px; }
.field .hint { font-size: 0.8rem; color: var(--text-3); margin-top: 6px; }
.field .err { display: none; font-size: 0.8rem; color: var(--err); margin-top: 6px; }
.field.invalid .err { display: block; }
.field.invalid input, .field.invalid textarea { border-color: var(--err-line); }
input, textarea, select {
  width: 100%; background: var(--input-bg);
  border: 1px solid var(--line-strong); border-radius: var(--radius-input);
  color: var(--text); padding: 12px 14px; font: inherit; font-size: 0.95rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}
input::placeholder, textarea::placeholder { color: var(--text-3); }
input:focus, textarea:focus, select:focus {
  outline: none; border-color: var(--accent-line);
  box-shadow: 0 0 0 3px rgba(62, 207, 165, 0.15);
}
textarea { resize: vertical; min-height: 120px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ---------- Theme toggle ---------- */
.theme-toggle {
  width: 40px; height: 40px; border-radius: 999px;
  border: 1px solid var(--line-strong);
  display: grid; place-items: center; color: var(--text-2);
  transition: color 0.2s, border-color 0.2s, transform 0.3s var(--ease-out);
}
.theme-toggle:hover { color: var(--accent); border-color: var(--accent-line); }
.theme-toggle:active { transform: scale(0.92); }
.theme-toggle .icn { width: 18px; height: 18px; }
.theme-toggle .i-sun { display: none; }
.theme-toggle .i-moon { display: inline-block; }
[data-theme="light"] .theme-toggle .i-sun { display: inline-block; }
[data-theme="light"] .theme-toggle .i-moon { display: none; }

/* ---------- Manifesto emphasis ---------- */
.manifesto-line em { font-style: italic; color: var(--accent); }

/* ---------- Advantages ledger ---------- */
.ledger { border-top: 1px solid var(--line); }
.ledger-row {
  display: grid; grid-template-columns: minmax(240px, 0.8fr) 1.5fr auto;
  gap: 16px 40px; align-items: baseline;
  padding: 36px 0; border-bottom: 1px solid var(--line);
}
.ledger-row h3 { font-size: clamp(1.35rem, 2.4vw, 1.9rem); letter-spacing: -0.02em; }
.ledger-row p { color: var(--text-2); font-size: 0.98rem; max-width: 56ch; }
.ledger-who {
  font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--text-3); white-space: nowrap;
}

/* ---------- WhatsApp section ---------- */
.wa-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 64px; align-items: center; }
.wa-grid .lede { margin-top: 18px; }
.wa-grid h2 + .lede { margin-top: 22px; }
.phone {
  max-width: 350px; width: 100%; margin: 0 auto;
  border: 1px solid var(--line-strong); border-radius: 30px;
  background: var(--bg-panel); padding: 12px;
  box-shadow: 0 26px 70px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}
.phone-screen { border-radius: 20px; background: var(--bg-raise); overflow: hidden; border: 1px solid var(--line); }
.phone-head {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 16px; border-bottom: 1px solid var(--line);
}
.phone-avatar {
  width: 34px; height: 34px; border-radius: 50%; flex: none;
  background: var(--accent); color: var(--on-accent);
  display: grid; place-items: center; font-weight: 700; font-size: 0.95rem;
}
.phone-head b { display: block; font-size: 0.92rem; line-height: 1.2; }
.phone-head small { color: var(--text-3); font-size: 0.75rem; }
.phone-body { padding: 16px 14px 20px; display: flex; flex-direction: column; gap: 9px; min-height: 300px; }
.msg-in {
  align-self: flex-start; background: var(--soft); border: 1px solid var(--line);
  color: var(--text); font-size: 0.86rem; max-width: 88%;
}
.msg-out {
  align-self: flex-end; background: var(--accent-dim); border: 1px solid var(--accent-line);
  color: var(--text); font-size: 0.86rem; max-width: 88%;
}
.msg-doc { font-family: var(--font-mono); font-size: 0.78rem; color: var(--accent); }

/* ---------- Gateway (one nervous system) ---------- */
.gateway-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 56px; align-items: center; }
.gateway-copy .lede { margin-top: 18px; }
.ask {
  margin-top: 30px; border: 1px solid var(--line-strong); border-radius: var(--radius-card);
  background: var(--bg-panel); overflow: hidden;
}
.ask-head {
  padding: 11px 16px; border-bottom: 1px solid var(--line);
  font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--text-3);
}
.ask-body { padding: 16px; display: flex; flex-direction: column; gap: 10px; }
.ask-msg {
  font-size: 0.9rem; padding: 10px 14px; border-radius: 12px; max-width: 92%;
  opacity: 0; transform: translateY(8px);
  transition: opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out);
}
.ask-msg.show { opacity: 1; transform: none; }
.ask-user { align-self: flex-end; background: var(--accent-dim); border: 1px solid var(--accent-line); color: var(--text); }
.ask-sys { align-self: flex-start; background: var(--soft); border: 1px solid var(--line); color: var(--text-2); }
.ask-sys .ok { color: var(--accent); font-weight: 600; }

.hub-wrap { position: relative; }
.hub-svg { width: 100%; height: auto; }
.hub-svg .spoke {
  stroke: var(--line-strong); stroke-width: 1.5; fill: none;
}
.hub-svg .pulse-line {
  stroke: var(--accent); stroke-width: 1.5; fill: none;
  stroke-dasharray: 10 130;
  animation: hubFlow 3.2s linear infinite;
  animation-delay: calc(var(--fd, 0) * 0.45s);
  opacity: 0.9;
}
@keyframes hubFlow { from { stroke-dashoffset: 140; } to { stroke-dashoffset: 0; } }
.hub-svg .hub-core { fill: var(--accent); }
.hub-svg .hub-ring {
  fill: none; stroke: var(--accent); stroke-width: 1;
  transform-origin: 300px 230px;
  animation: hubPulse 3s var(--ease-out) infinite;
  opacity: 0;
}
.hub-svg .hub-ring.r2 { animation-delay: 1.5s; }
@keyframes hubPulse { 0% { transform: scale(0.4); opacity: 0.7; } 100% { transform: scale(1.6); opacity: 0; } }
.hub-node { }
.hub-node rect { fill: var(--bg-panel); stroke: var(--line-strong); rx: 12; }
.hub-node text { fill: var(--text-2); font-family: var(--font-sans); font-size: 13px; font-weight: 500; }
.hub-node .icn-dot { fill: var(--accent); }
.hub-label { fill: var(--text); font-family: var(--font-sans); font-size: 14.5px; font-weight: 600; }
.hub-sub { fill: var(--text-3); font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.12em; }

/* ---------- Intake flow (animated journey graphic) ---------- */
.flow { position: relative; }
.flow-track {
  position: absolute; left: 4%; right: 4%; top: 30px; height: 2px;
  background: var(--line);
}
.flow-track i {
  position: absolute; inset: 0; transform-origin: left;
  background: var(--accent); transform: scaleX(0);
  transition: transform 2.6s linear;
}
.flow.play .flow-track i { transform: scaleX(1); }
.flow-stages { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; position: relative; }
.flow-stage { padding-top: 62px; position: relative; }
.flow-dot {
  position: absolute; top: 19px; left: 0; width: 24px; height: 24px; border-radius: 50%;
  border: 2px solid var(--line-strong); background: var(--bg);
  transition: border-color 0.4s, background 0.4s, box-shadow 0.4s;
}
.flow-stage.lit .flow-dot { border-color: var(--accent); background: var(--accent); box-shadow: 0 0 0 6px var(--accent-dim); }
.flow-stage .icn { width: 26px; height: 26px; color: var(--text-3); margin-bottom: 12px; transition: color 0.4s; }
.flow-stage.lit .icn { color: var(--accent); }
.flow-stage h3 { font-size: 1.05rem; margin-bottom: 8px; }
.flow-stage p { color: var(--text-2); font-size: 0.9rem; }
.flow-stage .flow-detail {
  margin-top: 14px; border: 1px solid var(--line); border-radius: 12px;
  background: var(--bg-panel); padding: 12px 14px;
  font-size: 0.82rem; color: var(--text-2);
  opacity: 0.4; transform: translateY(6px);
  transition: opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out), border-color 0.4s;
}
.flow-stage.lit .flow-detail { opacity: 1; transform: none; border-color: var(--accent-line); }
.flow-detail b { color: var(--text); display: block; margin-bottom: 3px; font-size: 0.82rem; }

/* ---------- IPD product section ---------- */
.ipd-hero {
  position: relative; border-radius: var(--radius-card); overflow: hidden;
  border: 1px solid var(--line-strong);
  min-height: 460px; display: flex; align-items: flex-end;
}
.ipd-hero img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.ipd-hero::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(var(--scrim-c), 0.1) 0%, rgba(var(--scrim-c), 0.55) 55%, rgba(var(--scrim-c), 0.95) 100%);
}
.ipd-hero-copy { position: relative; z-index: 1; padding: 44px; max-width: 640px; }
.ipd-hero-copy h2 { margin-bottom: 14px; }
.ipd-hero-copy p { color: var(--on-media); font-size: 1.05rem; }
.ipd-feats {
  margin-top: 44px;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px 44px;
}
.ipd-feat { display: flex; gap: 14px; align-items: flex-start; }
.ipd-feat .icn { width: 22px; height: 22px; color: var(--accent); margin-top: 3px; }
.ipd-feat h3 { font-size: 0.98rem; margin-bottom: 4px; }
.ipd-feat p { color: var(--text-2); font-size: 0.88rem; }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out); transition-delay: var(--d, 0s); }
.reveal-in { opacity: 1; transform: none; }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .split-words .w { opacity: 1; transform: none; transition: none; }
  .chapter-copy h2, .chapter-copy p { opacity: 1; transform: none; transition: none; }
  .hub-svg .pulse-line, .hub-svg .hub-ring { animation: none; }
  .ask-msg { opacity: 1; transform: none; transition: none; }
  .flow-track i { transition: none; }
  .flow-stage .flow-detail { opacity: 1; transform: none; transition: none; }
  .wave i { animation: none; height: 45%; }
  .demo-line, .chip, .note-field { transition: none; }
  .btn, .cell, .opt { transition: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .nav-links { display: none; }
  .nav-burger { display: block; }
  .nav-cta .btn { display: none; }
  .security-panel { grid-template-columns: 1fr; padding: 36px; gap: 36px; }
  .config-grid { grid-template-columns: 1fr; }
  .summary { position: static; }
  .contact-grid { grid-template-columns: 1fr; gap: 44px; }
}
@media (max-width: 768px) {
  section { padding: 76px 0; }
  .pillars { grid-template-columns: 1fr; }
  .bento { grid-template-columns: 1fr; }
  .cell-3, .cell-2, .cell-4 { grid-column: auto; }
  .deploy { grid-template-columns: 1fr; }
  .opt-grid { grid-template-columns: 1fr; }
  .field-row { grid-template-columns: 1fr; }
  .demo-body { grid-template-columns: 1fr; }
  .demo-col + .demo-col { border-left: 0; border-top: 1px solid var(--line); }
  .form-card { padding: 26px; }
  .manifesto { padding: 90px 0 70px; }
  .gateway-grid { grid-template-columns: 1fr; gap: 40px; }
  .ledger-row { grid-template-columns: 1fr; gap: 8px; padding: 26px 0; }
  .wa-grid { grid-template-columns: 1fr; gap: 40px; }
  .flow-track { display: none; }
  .flow-stages { grid-template-columns: 1fr; gap: 30px; }
  .flow-stage { padding-top: 0; }
  .flow-dot { display: none; }
  .ipd-hero { min-height: 380px; }
  .ipd-hero-copy { padding: 26px; }
  .ipd-feats { grid-template-columns: 1fr; gap: 24px; }
  .chapter, .chapter-card { min-height: 88dvh; }
  .chapter-card { grid-template-columns: 1fr; align-items: end; }
  .chapter-card::after {
    background: linear-gradient(180deg, rgba(var(--scrim-c), 0.25) 0%, rgba(var(--scrim-c), 0.55) 45%, rgba(var(--scrim-c), 0.94) 78%);
  }
  .chapter-copy { padding: 0 24px 56px; }
}

/* ---------- Icon classes (URLs resolve relative to this stylesheet) ---------- */
.i-arrow-right { --icn: url(icons/arrow-right.svg); }
.i-arrows-clockwise { --icn: url(icons/arrows-clockwise.svg); }
.i-bed { --icn: url(icons/bed.svg); }
.i-buildings { --icn: url(icons/buildings.svg); }
.i-caret-down { --icn: url(icons/caret-down.svg); }
.i-chart-line-up { --icn: url(icons/chart-line-up.svg); }
.i-check { --icn: url(icons/check.svg); }
.i-clock-countdown { --icn: url(icons/clock-countdown.svg); }
.i-cloud { --icn: url(icons/cloud.svg); }
.i-cpu { --icn: url(icons/cpu.svg); }
.i-database { --icn: url(icons/database.svg); }
.i-device-tablet { --icn: url(icons/device-tablet.svg); }
.i-envelope-simple { --icn: url(icons/envelope-simple.svg); }
.i-file-text { --icn: url(icons/file-text.svg); }
.i-first-aid { --icn: url(icons/first-aid.svg); }
.i-globe-hemisphere-east { --icn: url(icons/globe-hemisphere-east.svg); }
.i-hard-drives { --icn: url(icons/hard-drives.svg); }
.i-heartbeat { --icn: url(icons/heartbeat.svg); }
.i-hospital { --icn: url(icons/hospital.svg); }
.i-key { --icn: url(icons/key.svg); }
.i-list { --icn: url(icons/list.svg); }
.i-lock-key { --icn: url(icons/lock-key.svg); }
.i-microphone { --icn: url(icons/microphone.svg); }
.i-minus { --icn: url(icons/minus.svg); }
.i-plugs-connected { --icn: url(icons/plugs-connected.svg); }
.i-plus { --icn: url(icons/plus.svg); }
.i-prescription { --icn: url(icons/prescription.svg); }
.i-printer { --icn: url(icons/printer.svg); }
.i-pulse { --icn: url(icons/pulse.svg); }
.i-qr-code { --icn: url(icons/qr-code.svg); }
.i-shield-check { --icn: url(icons/shield-check.svg); }
.i-stethoscope { --icn: url(icons/stethoscope.svg); }
.i-translate { --icn: url(icons/translate.svg); }
.i-users-three { --icn: url(icons/users-three.svg); }
.i-waveform { --icn: url(icons/waveform.svg); }
.i-wifi-slash { --icn: url(icons/wifi-slash.svg); }
.i-x { --icn: url(icons/x.svg); }
.i-chats-circle { --icn: url(icons/chats-circle.svg); }
.i-megaphone { --icn: url(icons/megaphone.svg); }
.i-map-trifold { --icn: url(icons/map-trifold.svg); }
.i-phone { --icn: url(icons/phone.svg); }
.i-flask { --icn: url(icons/flask.svg); }
.i-pill { --icn: url(icons/pill.svg); }
.i-monitor { --icn: url(icons/monitor.svg); }
.i-bell-ringing { --icn: url(icons/bell-ringing.svg); }
.i-drop { --icn: url(icons/drop.svg); }
.i-sun { --icn: url(icons/sun.svg); }
.i-moon { --icn: url(icons/moon.svg); }