/* ─────────────────────────────────────────────────────────────
   TECHMARK — shared design system
   v1 · extracted from car-fridge-hero-v3.html
   Reused by index.html, about.html, products.html, for-business.html, contact.html
   ───────────────────────────────────────────────────────────── */

:root {
  /* palette — graphite-tuned dark-mode primary */
  --ink:          #12151C;
  --ink-2:        #181C24;
  --ink-3:        #1E222C;
  --ink-4:        #272B36;
  --ink-soft:     #343947;

  /* light band — Apple intermission */
  --chalk:        #F5F5F7;
  --chalk-2:      #FFFFFF;
  --chalk-3:      #E8E8ED;
  --ink-on-chalk: #1D1D1F;
  --dim-on-chalk: #6E6E73;

  --line:         rgba(255,255,255,0.09);
  --line-bright:  rgba(255,255,255,0.16);
  --line-dark:    rgba(0,0,0,0.08);

  --paper:        #F5F6F9;
  --paper-dim:    #9B9CA5;
  --paper-dimmer: #6B6D77;

  /* accents */
  --cyan:         #6BD4FF;
  --cyan-bright:  #A8E6FF;
  --cyan-deep:    #2A7BA3;
  --cyan-ink:     #0E5375;
  --red:          #C8102E;
  --green:        #009A4E;

  /* type */
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Display', system-ui, sans-serif;
  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Text', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', 'SF Mono', Menlo, monospace;

  /* scale */
  --fs-micro:   0.75rem;
  --fs-caption: 0.875rem;
  --fs-body:    1rem;
  --fs-body-lg: 1.125rem;
  --fs-h4:      1.375rem;
  --fs-h3:      clamp(1.75rem, 2.5vw, 2.25rem);
  --fs-h2:      clamp(2.5rem, 4.5vw, 4rem);
  --fs-h1:      clamp(3.5rem, 8vw, 7.5rem);
  --fs-stat:    clamp(3rem, 7vw, 6rem);

  /* spacing */
  --sp-1: 0.25rem; --sp-2: 0.5rem; --sp-3: 0.75rem; --sp-4: 1rem;
  --sp-5: 1.5rem; --sp-6: 2rem; --sp-7: 3rem; --sp-8: 4rem;
  --sp-9: 6rem; --sp-10: 8rem; --sp-11: 10rem;

  /* layout */
  --container: 1280px;
  --container-wide: 1440px;
  --nav-h: 64px;

  /* radii */
  --r-sm: 6px; --r: 10px; --r-lg: 20px; --r-xl: 28px; --r-pill: 999px;

  /* motion */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --dur-fast: 180ms;
  --dur:      320ms;
  --dur-slow: 560ms;
}

/* ── reset + base — LIGHT DEFAULT (v8) ── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
body {
  margin: 0;
  background: var(--chalk-2);          /* white default — was --ink */
  color: var(--ink-on-chalk);          /* dark text default — was --paper */
  font-family: var(--font-body);
  font-size: var(--fs-body);
  font-weight: 400;
  line-height: 1.55;
  letter-spacing: -0.003em;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: transparent; color: inherit; }

.container      { width: 100%; max-width: var(--container);      margin: 0 auto; padding: 0 var(--sp-6); }
.container-wide { width: 100%; max-width: var(--container-wide); margin: 0 auto; padding: 0 var(--sp-6); }

/* ── NAV — LIGHT DEFAULT, .on-dark for hero / dark sections ── */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--nav-h);
  display: flex; align-items: center;
  z-index: 100;
  backdrop-filter: saturate(160%) blur(16px);
  -webkit-backdrop-filter: saturate(160%) blur(16px);
  background: rgba(255, 255, 255, 0.82);
  border-bottom: 1px solid var(--line-dark);
  color: var(--ink-on-chalk);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.nav.on-dark {
  background: rgba(18, 21, 28, 0.72);
  border-bottom-color: var(--line);
  color: var(--paper);
}
/* Legacy alias (kept for back-compat with existing pages using .on-light) */
.nav.on-light {
  background: rgba(255, 255, 255, 0.82);
  border-bottom-color: var(--line-dark);
  color: var(--ink-on-chalk);
}
.nav__inner {
  width: 100%; max-width: var(--container-wide); margin: 0 auto;
  padding: 0 var(--sp-6);
  display: flex; align-items: center; justify-content: space-between;
}
.nav__logo {
  display: flex; align-items: center;
  height: var(--nav-h);
}
.nav__logo-img {
  height: 30px; width: auto; display: block;
}
.nav__logo-img--dark { display: none; }
.nav.on-dark .nav__logo-img--light { display: none; }
.nav.on-dark .nav__logo-img--dark { display: block; }
/* Legacy text-mark fallback (kept for any inline use) */
.nav__logo-mark { display: inline-flex; align-items: baseline; line-height: 1; font-family: var(--font-display); font-weight: 800; letter-spacing: -0.02em; font-size: 1.125rem; }
.nav__logo-mark .h-accent-g { color: var(--green); }
.nav__logo-mark .h-accent-r { color: var(--red); }
.nav__links { display: flex; gap: var(--sp-6); font-size: var(--fs-caption); color: var(--dim-on-chalk); }
.nav.on-dark .nav__links { color: var(--paper-dim); }
.nav__links a { transition: color var(--dur-fast) var(--ease); }
.nav__links a:hover, .nav__links a.current { color: var(--ink-on-chalk); }
.nav.on-dark .nav__links a:hover, .nav.on-dark .nav__links a.current { color: var(--paper); }
.nav__cta {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  font-size: var(--fs-caption); color: var(--ink-on-chalk);
  padding: 0.5rem 0.875rem;
  border: 1px solid rgba(0,0,0,0.12);
  border-radius: var(--r-pill);
  transition: all var(--dur-fast) var(--ease);
}
.nav.on-dark .nav__cta { color: var(--paper); border-color: var(--line-bright); }
.nav__cta:hover { background: var(--ink-on-chalk); color: var(--chalk); border-color: var(--ink-on-chalk); }
.nav.on-dark .nav__cta:hover { background: var(--paper); color: var(--ink); border-color: var(--paper); }
@media (max-width: 820px) { .nav__links { display: none; } }

/* ── BUTTONS ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: var(--sp-2);
  padding: 0.95rem 1.5rem;
  font-size: var(--fs-caption); font-weight: 500;
  letter-spacing: 0.01em;
  border-radius: var(--r-pill);
  transition: all var(--dur) var(--ease);
  white-space: nowrap;
}
.btn--primary { background: var(--paper); color: var(--ink); }
.btn--primary:hover {
  background: var(--cyan-bright);
  box-shadow: 0 0 0 6px rgba(168, 230, 255, 0.12), 0 20px 40px -15px rgba(107, 212, 255, 0.45);
  transform: translateY(-1px);
}
.btn--ghost { color: var(--paper); border: 1px solid var(--line-bright); }
.btn--ghost:hover { background: rgba(255,255,255,0.06); border-color: var(--paper); }
.btn--ink { background: var(--ink-on-chalk); color: var(--chalk); }
.btn--ink:hover { background: #000; box-shadow: 0 12px 32px -12px rgba(0,0,0,0.4); transform: translateY(-1px); }
.btn--chalk-ghost { color: var(--ink-on-chalk); border: 1px solid rgba(0,0,0,0.14); }
.btn--chalk-ghost:hover { background: var(--ink-on-chalk); color: var(--chalk); border-color: var(--ink-on-chalk); }

/* ── EYEBROW PILL — works on light or dark ── */
.eyebrow {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  padding: 0.375rem 0.75rem;
  background: rgba(200, 16, 46, 0.10);
  border: 1px solid rgba(200, 16, 46, 0.28);
  border-radius: var(--r-pill);
  font-size: var(--fs-micro); font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--red);
  margin-bottom: var(--sp-5);
}
.eyebrow__dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 0 0 rgba(200, 16, 46, 0.6);
  animation: pulse 2s var(--ease) infinite;
}
.eyebrow--cyan {
  background: rgba(14, 83, 117, 0.08);
  border-color: rgba(14, 83, 117, 0.28);
  color: var(--cyan-ink);
}
.eyebrow--cyan .eyebrow__dot { background: var(--cyan-ink); box-shadow: 0 0 0 0 rgba(14, 83, 117, 0.5); }
/* Brighter cyan eyebrow for use INSIDE dark sections */
.section--ink .eyebrow--cyan, .hero .eyebrow--cyan, .philosophy .eyebrow--cyan, .finalcta .eyebrow--cyan {
  background: rgba(107, 212, 255, 0.10);
  border-color: rgba(107, 212, 255, 0.32);
  color: var(--cyan-bright);
}
.section--ink .eyebrow--cyan .eyebrow__dot, .hero .eyebrow--cyan .eyebrow__dot, .philosophy .eyebrow--cyan .eyebrow__dot, .finalcta .eyebrow--cyan .eyebrow__dot { background: var(--cyan); }
.eyebrow--ink {
  background: rgba(0,0,0,0.05);
  border-color: rgba(0,0,0,0.1);
  color: var(--ink-on-chalk);
}
.eyebrow--ink .eyebrow__dot { background: var(--ink-on-chalk); box-shadow: 0 0 0 0 rgba(0,0,0,0.3); }
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(200,16,46,0.55); }
  70%  { box-shadow: 0 0 0 10px rgba(200,16,46,0); }
  100% { box-shadow: 0 0 0 0 rgba(200,16,46,0); }
}

/* ── SECTION COMMONS — light default, dark = accent ── */
section { position: relative; }
.section { padding: var(--sp-11) 0; }
.section--light, .section--chalk { background: var(--chalk); color: var(--ink-on-chalk); }   /* slight tint */
.section--white { background: var(--chalk-2); color: var(--ink-on-chalk); }                  /* pure white */
.section--ink { background: var(--ink); color: var(--paper); }
.section--ink-2 { background: var(--ink-2); color: var(--paper); }

/* Default kicker / h2 / intro on LIGHT bg */
.section__kicker {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  font-size: var(--fs-micro); font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--cyan-ink); margin-bottom: var(--sp-4);
}
.section__kicker::before {
  content: ''; width: 18px; height: 1px; background: var(--cyan-ink);
}
.section__h2 {
  font-family: var(--font-display);
  font-size: var(--fs-h2); font-weight: 700;
  line-height: 1.02; letter-spacing: -0.035em;
  margin: 0 0 var(--sp-5);
  max-width: 22ch;
  color: var(--ink-on-chalk);
}
.section__h2 em { font-style: normal; color: var(--cyan-ink); }
.section__intro {
  font-size: var(--fs-body-lg);
  color: var(--dim-on-chalk);
  max-width: 50ch;
  margin: 0;
}

/* Inverted on dark sections */
.section--ink .section__kicker, .section--ink-2 .section__kicker { color: var(--cyan); }
.section--ink .section__kicker::before, .section--ink-2 .section__kicker::before { background: var(--cyan); }
.section--ink .section__h2, .section--ink-2 .section__h2 { color: var(--paper); }
.section--ink .section__h2 em, .section--ink-2 .section__h2 em { color: var(--cyan); }
.section--ink .section__intro, .section--ink-2 .section__intro { color: var(--paper-dim); }

/* ── STATUS PILL (Now Live / Coming Soon / Available in India / etc) ── */
.pill {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  padding: 0.25rem 0.625rem;
  border-radius: var(--r-pill);
  font-size: var(--fs-micro); font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
}
.pill--live {
  background: rgba(0, 154, 78, 0.1);
  border: 1px solid rgba(0, 154, 78, 0.3);
  color: var(--green);
}
.pill--soon {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  color: var(--paper-dim);
}
.pill--global {
  background: rgba(107, 212, 255, 0.08);
  border: 1px solid rgba(107, 212, 255, 0.22);
  color: var(--cyan);
}
.section--light .pill--soon { background: rgba(0,0,0,0.04); border-color: rgba(0,0,0,0.1); color: var(--dim-on-chalk); }
.section--light .pill--global { color: var(--cyan-ink); }

/* ── FOOTER (shared across all pages) ── */
.footer {
  background: var(--ink);
  color: var(--paper);
  border-top: 1px solid var(--line);
  padding: var(--sp-10) 0 var(--sp-7);
}
.footer__tagline {
  font-family: var(--font-display);
  font-size: var(--fs-h2); font-weight: 700;
  line-height: 1.02; letter-spacing: -0.035em;
  margin: 0 0 var(--sp-8);
  max-width: 18ch;
}
.footer__tagline em { font-style: normal; color: var(--cyan); }
.footer__grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1fr;
  gap: var(--sp-6);
  padding-top: var(--sp-8);
  border-top: 1px solid var(--line);
}
@media (max-width: 820px) { .footer__grid { grid-template-columns: 1fr 1fr; } }
.footer__col h5 {
  font-size: var(--fs-micro); font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--paper-dim);
  margin: 0 0 var(--sp-4);
}
.footer__col ul { list-style: none; padding: 0; margin: 0; display: grid; gap: var(--sp-2); }
.footer__col a {
  font-size: var(--fs-caption); color: var(--paper);
  transition: color var(--dur-fast) var(--ease);
}
.footer__col a:hover { color: var(--cyan); }
.footer__brand-logo {
  margin-bottom: var(--sp-4);
}
.footer__brand-logo img {
  height: 56px; width: auto; display: block;
}
/* Legacy text-mark fallback */
.footer__brand-logo .h-accent-g { color: var(--green); }
.footer__brand-logo .h-accent-r { color: var(--red); }
.footer__sig {
  font-size: var(--fs-caption); color: var(--paper-dim);
  max-width: 28ch; line-height: 1.5;
}
.footer__legal {
  margin-top: var(--sp-8);
  padding-top: var(--sp-5);
  border-top: 1px solid var(--line);
  display: flex; justify-content: space-between;
  gap: var(--sp-5);
  font-size: var(--fs-micro); color: var(--paper-dimmer);
  flex-wrap: wrap;
}

/* ── REVEAL (entrance animation) ── */
@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(16px); transition: opacity 700ms var(--ease), transform 700ms var(--ease); }
  .reveal.is-in { opacity: 1; transform: none; }
}

/* ── PAGE HERO — light by default, .page-hero--dark for cinematic ── */
.page-hero {
  position: relative;
  padding-top: calc(var(--nav-h) + var(--sp-10));
  padding-bottom: var(--sp-10);
  overflow: hidden;
  isolation: isolate;
  color: var(--ink-on-chalk);
}
.page-hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(70% 60% at 80% 20%, rgba(107, 212, 255, 0.18), transparent 70%),
    linear-gradient(180deg, var(--chalk-2) 0%, var(--chalk) 100%);
  z-index: -1;
}
.page-hero--dark { color: var(--paper); }
.page-hero--dark::before {
  background:
    radial-gradient(60% 50% at 75% 30%, rgba(107, 212, 255, 0.10), transparent 70%),
    linear-gradient(180deg, var(--ink) 0%, var(--ink-2) 100%);
}
.page-hero__h1 {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6.5vw, 6rem);
  font-weight: 700;
  line-height: 0.96;
  letter-spacing: -0.04em;
  margin: 0 0 var(--sp-5);
  max-width: 16ch;
  color: inherit;
}
.page-hero__h1 em { font-style: normal; background: linear-gradient(135deg, var(--cyan-deep), var(--cyan-ink)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.page-hero--dark .page-hero__h1 em { background: linear-gradient(135deg, var(--cyan-bright), var(--c