/* ==========================================================================
   QUANTUM METRICS — site.css
   Marketing + portal site styling, built on tokens.css semantic variables.
   No raw palette values here — only semantic tokens.
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }
/* Ink root background so overscroll/rubber-band at the top (dark hero) or bottom
   (dark footer) never flashes the white page background. */
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; background: var(--bg-ink); overscroll-behavior: none; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--fg-1);
  background: var(--bg-1);
  line-height: var(--lh-relaxed);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--fg-brand); text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
:focus-visible { outline: none; box-shadow: var(--ring-focus); border-radius: var(--radius-sm); }

/* --------------------------------------------------------------------------
   Layout primitives
   -------------------------------------------------------------------------- */
.container { width: 100%; max-width: var(--container-std); margin-inline: auto; padding-inline: var(--space-6); }
.container--wide { max-width: var(--container-wide); }
.section { padding-block: var(--space-24); }
.section--tight { padding-block: var(--space-16); }
.eyebrow {
  font-size: var(--text-xs); font-weight: var(--fw-semibold); line-height: 1;
  text-transform: uppercase; letter-spacing: var(--tracking-widest); color: var(--fg-brand);
  margin: 0 0 var(--space-4);
}
.eyebrow--on-dark { color: var(--qm-teal-300); }
.section__head { max-width: var(--container-prose); margin-bottom: var(--space-12); }
.section__title {
  font-family: var(--font-display); font-weight: var(--fw-regular);
  font-size: var(--text-3xl); line-height: var(--lh-snug); letter-spacing: var(--tracking-tight);
  margin: 0 0 var(--space-4);
}
.section__lede { font-size: var(--text-md); color: var(--fg-2); margin: 0; max-width: 60ch; text-wrap: pretty; }

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-size: var(--text-sm); font-weight: var(--fw-medium);
  padding: 10px 18px; border-radius: var(--radius-md); border: 1px solid transparent;
  transition: background var(--duration-fast) var(--ease-standard),
              border-color var(--duration-fast) var(--ease-standard),
              color var(--duration-fast) var(--ease-standard);
  white-space: nowrap;
}
.btn svg { width: 16px; height: 16px; }
.btn--lg { padding: 13px 24px; font-size: var(--text-base); }
.btn--primary { background: var(--bg-brand); color: var(--fg-invert); }
.btn--primary:hover { background: var(--qm-teal-700); }
.btn--ghost { background: transparent; color: var(--fg-1); border-color: var(--border-2); }
.btn--ghost:hover { border-color: var(--border-strong); background: var(--bg-3); }
.btn--ghost-dark { background: transparent; color: var(--fg-invert); border-color: rgba(255,255,255,0.28); }
.btn--ghost-dark:hover { border-color: rgba(255,255,255,0.55); background: rgba(255,255,255,0.06); }
.btn--block { width: 100%; justify-content: center; }

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: transparent; border-bottom: 1px solid transparent;
  transition: background var(--duration-normal) var(--ease-standard),
              border-color var(--duration-normal) var(--ease-standard),
              box-shadow var(--duration-normal) var(--ease-standard),
              backdrop-filter var(--duration-normal) var(--ease-standard);
}
/* Scrolled: condenses into a frosted glass bar */
.site-header.scrolled {
  background: rgba(255,255,255,0.82); backdrop-filter: blur(16px) saturate(1.5);
  border-bottom-color: var(--border-1);
  box-shadow: 0 1px 0 rgba(20,24,23,0.04), 0 6px 24px rgba(20,24,23,0.07);
}
/* Constant header height — changing it on scroll caused layout thrash and
   state flicker at the threshold. Only the background/logo colour changes now. */
.site-header__inner { display: flex; align-items: center; gap: var(--space-8); height: 74px; }
.site-header__brand { display: flex; align-items: center; margin-right: auto; }
/* Logo: white on the hero, natural teal once the bar turns glass. Larger for
   deliberate brand presence; PNG is 272×89 so ≤44px stays crisp (downscaling). */
.site-header__brand img { height: 42px; width: auto; filter: brightness(0) invert(1);
  transition: filter var(--duration-normal) var(--ease-standard); }
.site-header.scrolled .site-header__brand img { filter: none; }

/* The transparent header must sit OVER the dark hero, not reserve a white strip
   above it. Pull the first (dark) hero section up behind the sticky header and
   pad its content back down. Applies to every page's opening hero. */
.hero, .phero, .tool-hero, .bk-hero { margin-top: -80px; padding-top: 80px; }
.site-nav { display: flex; align-items: center; gap: var(--space-6); }
/* Light over the hero, dark once scrolled into the glass bar */
.site-nav a {
  color: rgba(255,255,255,0.80); font-size: var(--text-sm); font-weight: var(--fw-medium);
  padding-block: 6px; position: relative; transition: color var(--duration-fast);
}
.site-nav a:hover { color: #fff; }
.site-nav a[aria-current="page"] { color: #fff; }
.site-header.scrolled .site-nav a { color: var(--fg-2); }
.site-header.scrolled .site-nav a:hover,
.site-header.scrolled .site-nav a[aria-current="page"] { color: var(--fg-1); }
/* Login (ghost) + menu toggle adapt too */
.site-header:not(.scrolled) .btn--ghost { color: #fff; border-color: rgba(255,255,255,0.30); }
.site-header:not(.scrolled) .btn--ghost:hover { border-color: rgba(255,255,255,0.55); background: rgba(255,255,255,0.08); }
.site-header:not(.scrolled) .nav-toggle { color: #fff; border-color: rgba(255,255,255,0.30); }
/* Open mobile menu is a solid panel — keep its links dark */
.site-nav.is-open a { color: var(--fg-2); }
.site-nav.is-open a:hover { color: var(--fg-1); }
.site-header__actions { display: flex; align-items: center; gap: var(--space-3); }
.nav-toggle { display: none; background: transparent; border: 1px solid var(--border-2);
  border-radius: var(--radius-md); padding: 8px; color: var(--fg-1); }
.nav-toggle svg { width: 20px; height: 20px; }

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */
.hero { position: relative; background: var(--bg-ink); color: var(--fg-invert); overflow: hidden; isolation: isolate; }

/* Background layers */
.hero__bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.hero__video-stack { position: absolute; inset: 0; opacity: 0.30; filter: saturate(0.95); }
.hero__v { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  opacity: 0; transition: opacity 1.4s ease-in-out; will-change: opacity; }
.hero__v--on { opacity: 1; }
.hero__video-stack + .hero__grid { opacity: 0.5; }   /* video is the living mesh; ease the static grid */
@media (prefers-reduced-motion: reduce) { .hero__video-stack { display: none; } }
.hero__grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.045) 1px, transparent 1px);
  background-size: 66px 66px;
  -webkit-mask-image: radial-gradient(120% 110% at 72% 12%, #000 0%, rgba(0,0,0,0.35) 42%, transparent 72%);
          mask-image: radial-gradient(120% 110% at 72% 12%, #000 0%, rgba(0,0,0,0.35) 42%, transparent 72%);
}
.hero__glow {
  position: absolute; width: 820px; height: 820px; right: -180px; top: -220px;
  background: radial-gradient(circle at center, rgba(44,106,104,0.42), rgba(44,106,104,0.10) 45%, transparent 68%);
  filter: blur(24px); will-change: transform;
  animation: heroGlow 16s var(--ease-standard) infinite alternate;
}
@keyframes heroGlow {
  from { transform: translate(0,0) scale(1); opacity: 0.9; }
  to   { transform: translate(-70px, 46px) scale(1.16); opacity: 1; }
}
/* Watermark mark spans the content block: top aligns with the eyebrow line
   (hero top-pad 80 + inner top-pad), bottom aligns with the stats box (inner
   bottom-pad). Height follows from top/bottom, so it tracks the content. */
.hero__mark {
  position: absolute; right: -40px;
  top: calc(80px + var(--space-32) + 34px);   /* eyebrow line */
  bottom: calc(var(--space-24) - 25px);        /* bottom of the stats block */
  opacity: 0.15; will-change: transform; animation: heroFloat 12s var(--ease-standard) infinite alternate;
}
.hero__mark img { width: auto; height: 100%; filter: drop-shadow(0 0 60px rgba(44,106,104,0.28)); }
@keyframes heroFloat {
  from { transform: translateY(-7px); }
  to   { transform: translateY(7px); }
}
@media (max-width: 1100px) { .hero__mark { right: -24%; opacity: 0.12; } }

.hero__inner { position: relative; z-index: 1; padding-block: var(--space-32) var(--space-24); max-width: 780px; }
.hero__eyebrow { color: var(--qm-teal-300); display: inline-flex; align-items: center; gap: var(--space-2); }
.hero__ping { width: 7px; height: 7px; border-radius: 50%; background: var(--qm-teal-400); position: relative; flex: none; }
.hero__ping::after { content: ""; position: absolute; inset: 0; border-radius: 50%; background: var(--qm-teal-400);
  animation: ping 2.4s var(--ease-out) infinite; }
@keyframes ping { 0% { transform: scale(1); opacity: 0.7; } 70%, 100% { transform: scale(3.2); opacity: 0; } }

/* Hero entrance choreography */
.hero [data-hero] { opacity: 0; transform: translateY(18px); }
.hero.in [data-hero] { opacity: 1; transform: none;
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out); }
.hero.in [data-hero="1"] { transition-delay: 0.05s; }
.hero.in [data-hero="2"] { transition-delay: 0.15s; }
.hero.in [data-hero="3"] { transition-delay: 0.28s; }
.hero.in [data-hero="4"] { transition-delay: 0.40s; }
.hero.in [data-hero="5"] { transition-delay: 0.52s; }

/* Scroll cue */
.hero__scroll { position: absolute; left: 50%; bottom: var(--space-6); transform: translateX(-50%); z-index: 1;
  width: 26px; height: 42px; border: 1.5px solid rgba(255,255,255,0.28); border-radius: var(--radius-pill);
  display: flex; justify-content: center; padding-top: 8px; opacity: 0; transition: opacity 0.6s var(--ease-out) 1s; }
.hero.in .hero__scroll { opacity: 1; }
.hero__scroll span { width: 3px; height: 8px; border-radius: 2px; background: rgba(255,255,255,0.6);
  animation: scrollDot 1.8s var(--ease-standard) infinite; }
.hero__scroll:hover { border-color: rgba(255,255,255,0.5); }
@keyframes scrollDot { 0% { transform: translateY(0); opacity: 0; } 30% { opacity: 1; } 60% { transform: translateY(12px); opacity: 0; } 100% { opacity: 0; } }

@media (max-width: 680px) {
  .hero__mark { right: -22%; opacity: 0.10; }
  .hero__mark img { height: 380px; }
  .hero__scroll { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .hero__glow, .hero__mark, .hero__ping::after, .hero__scroll span { animation: none; }
  .hero [data-hero] { opacity: 1; transform: none; }
}
.hero__title {
  font-family: var(--font-display); font-weight: var(--fw-regular);
  font-size: clamp(var(--text-4xl), 6vw, var(--text-6xl));
  line-height: var(--lh-tight); letter-spacing: var(--tracking-tight);
  color: var(--fg-invert); margin: 0 0 var(--space-6);
}
.hero__lede { font-size: var(--text-lg); color: var(--qm-ink-300); max-width: 56ch; margin: 0 0 var(--space-8); text-wrap: pretty; }
.hero__actions { display: flex; flex-wrap: wrap; gap: var(--space-3); }
.hero__meta { display: flex; flex-wrap: wrap; gap: var(--space-8); margin-top: var(--space-16);
  padding-top: var(--space-8); border-top: 1px solid rgba(255,255,255,0.10); }
.hero__meta > div { }
.hero__meta .n { font-family: var(--font-display); font-size: var(--text-2xl);
  font-variant-numeric: tabular-nums; color: var(--fg-invert); }
.hero__meta .l { display: block; font-size: var(--text-xs); text-transform: uppercase;
  letter-spacing: var(--tracking-wide); color: var(--qm-ink-400); margin-top: 4px; }

/* --------------------------------------------------------------------------
   Tools / capabilities showcase
   -------------------------------------------------------------------------- */
.tools { background: var(--bg-2); border-block: 1px solid var(--border-1); }
.tools__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-5); }
.tool-card {
  display: flex; flex-direction: column; gap: var(--space-3);
  background: var(--bg-1); border: 1px solid var(--border-1); border-radius: var(--radius-lg);
  padding: var(--space-6); box-shadow: var(--shadow-xs);
  transition: border-color var(--duration-fast), box-shadow var(--duration-fast);
}
.tool-card:hover { border-color: var(--border-2); box-shadow: var(--shadow-sm); }
.tool-card__icon {
  width: 44px; height: 44px; border-radius: var(--radius-md);
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--bg-brand-soft); color: var(--fg-brand); margin-bottom: var(--space-1);
}
.tool-card__icon svg { width: 22px; height: 22px; }
.tool-card h3 { font-family: var(--font-display); font-weight: var(--fw-regular);
  font-size: var(--text-xl); margin: 0; letter-spacing: -0.01em; }
.tool-card p { margin: 0; font-size: var(--text-sm); color: var(--fg-2); flex: 1; }
.tool-card__cta { font-size: var(--text-sm); font-weight: var(--fw-medium); color: var(--fg-brand);
  display: inline-flex; align-items: center; gap: 6px; }
.tool-card__cta svg { width: 15px; height: 15px; }
.tool-card--live { position: relative; }
.tool-card__badge {
  position: absolute; top: var(--space-5); right: var(--space-5);
  font-size: 10px; font-weight: var(--fw-semibold); letter-spacing: var(--tracking-wide);
  text-transform: uppercase; color: var(--status-positive);
  background: var(--status-positive-bg); padding: 3px 8px; border-radius: var(--radius-pill);
  display: inline-flex; align-items: center; gap: 5px;
}
.tool-card__badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--status-positive); animation: livePulse 2.2s var(--ease-out) infinite; }
@keyframes livePulse {
  0%   { box-shadow: 0 0 0 0 rgba(90,122,62,0.55); }
  70%, 100% { box-shadow: 0 0 0 7px rgba(90,122,62,0); }
}

/* Scroll progress indicator */
.scroll-progress { position: fixed; top: 0; left: 0; height: 3px; width: 0; z-index: 60;
  background: linear-gradient(90deg, var(--qm-teal-600), var(--qm-teal-400));
  box-shadow: 0 0 8px rgba(44,106,104,0.5); }

/* --------------------------------------------------------------------------
   Live demo widget (embedded interactive dashboard)
   -------------------------------------------------------------------------- */
.demo {
  margin-top: var(--space-12);
  background: var(--bg-1); border: 1px solid var(--border-1); border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md); overflow: hidden;
}
.demo__chrome { display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-3) var(--space-5); border-bottom: 1px solid var(--border-1); background: var(--bg-2); }
.demo__dots { display: flex; gap: 6px; }
.demo__dots span { width: 10px; height: 10px; border-radius: 50%; background: var(--border-2); }
.demo__url { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--fg-3);
  background: var(--bg-1); border: 1px solid var(--border-1); border-radius: var(--radius-sm);
  padding: 4px 10px; margin-inline: auto; }
.demo__tag { font-size: var(--text-xs); color: var(--fg-3); }
.demo__body { padding: var(--space-6); }
.demo__toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-4);
  margin-bottom: var(--space-6); }
.demo__toolbar .field { display: flex; flex-direction: column; gap: 6px; }
.demo__toolbar label { font-size: var(--text-xs); font-weight: var(--fw-semibold);
  text-transform: uppercase; letter-spacing: var(--tracking-wide); color: var(--fg-3); }
.demo__scenarios { display: inline-flex; background: var(--bg-3); border: 1px solid var(--border-1);
  border-radius: var(--radius-md); padding: 3px; gap: 2px; }
.demo__scenarios button { border: none; background: transparent; color: var(--fg-2);
  font-size: var(--text-sm); font-weight: var(--fw-medium); padding: 7px 14px; border-radius: var(--radius-sm); }
.demo__scenarios button.is-active { background: var(--bg-1); color: var(--fg-1); box-shadow: var(--shadow-xs); }
.demo__slider { display: flex; align-items: center; gap: var(--space-3); min-width: 240px; }
.demo__slider input[type=range] { flex: 1; accent-color: var(--fg-brand); }
.demo__slider .val { font-family: var(--font-mono); font-variant-numeric: tabular-nums;
  font-size: var(--text-sm); color: var(--fg-1); min-width: 48px; text-align: right; }

.kpi-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-4); margin-bottom: var(--space-6); }
.kpi { background: var(--bg-2); border: 1px solid var(--border-1); border-radius: var(--radius-lg); padding: var(--space-5); }
.kpi__label { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: var(--tracking-wide);
  color: var(--fg-3); margin: 0 0 var(--space-2); }
.kpi__value { font-family: var(--font-display); font-size: var(--text-3xl); line-height: 1;
  font-variant-numeric: tabular-nums; color: var(--fg-1); }
.kpi__delta { font-size: var(--text-sm); font-variant-numeric: tabular-nums; margin-top: var(--space-2);
  display: inline-flex; align-items: center; gap: 5px; }
.kpi__delta svg { width: 14px; height: 14px; }
.kpi__delta.pos { color: var(--status-positive); }
.kpi__delta.neg { color: var(--status-risk); }
.kpi__delta.warn { color: var(--status-warn); }

.demo__panels { display: grid; grid-template-columns: 1.6fr 1fr; gap: var(--space-5); }
.panel { border: 1px solid var(--border-1); border-radius: var(--radius-lg); background: var(--bg-1); }
.panel__head { display: flex; align-items: baseline; justify-content: space-between;
  padding: var(--space-4) var(--space-5); border-bottom: 1px solid var(--border-1); }
.panel__head h4 { font-family: var(--font-display); font-weight: var(--fw-regular);
  font-size: var(--text-md); margin: 0; }
.panel__head .hint { font-size: var(--text-xs); color: var(--fg-3); }
.panel__body { padding: var(--space-5); }

/* mini register table */
.reg { width: 100%; border-collapse: collapse; font-size: var(--text-sm); }
.reg th { text-align: left; font-size: var(--text-xs); text-transform: uppercase;
  letter-spacing: var(--tracking-wide); color: var(--fg-3); font-weight: var(--fw-semibold);
  padding: 8px 10px; border-bottom: 1px solid var(--border-1); }
.reg td { padding: 10px; border-bottom: 1px solid var(--border-1); color: var(--fg-2);
  font-variant-numeric: tabular-nums; }
.reg tr:last-child td { border-bottom: none; }
.reg .num { text-align: right; color: var(--fg-1); }
.pill { display: inline-flex; align-items: center; gap: 5px; font-size: var(--text-xs);
  font-weight: var(--fw-medium); padding: 3px 9px; border-radius: var(--radius-pill); }
.pill.ontrack { color: var(--status-positive); background: var(--status-positive-bg); }
.pill.watch { color: var(--status-warn); background: var(--status-warn-bg); }
.pill.risk { color: var(--status-risk); background: var(--status-risk-bg); }

/* --------------------------------------------------------------------------
   Sectors band
   -------------------------------------------------------------------------- */
.sectors { background: var(--bg-1); border-bottom: 1px solid var(--border-1); }
.sectors__inner { display: flex; align-items: center; gap: var(--space-8) var(--space-10);
  padding-block: var(--space-6); flex-wrap: wrap; }
.sectors__label { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: var(--tracking-widest);
  color: var(--fg-3); font-weight: var(--fw-semibold); flex: none; }
.sectors__list { display: flex; gap: var(--space-6) var(--space-8); flex-wrap: wrap; }
.sectors__item { display: inline-flex; align-items: center; gap: var(--space-2); font-size: var(--text-sm);
  color: var(--fg-2); font-weight: var(--fw-medium); }
.sectors__item svg { width: 18px; height: 18px; color: var(--fg-brand); }

/* --------------------------------------------------------------------------
   How we work — approach
   -------------------------------------------------------------------------- */
.approach { background: var(--bg-2); border-block: 1px solid var(--border-1); }
.approach__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }
.approach__step { padding-top: var(--space-5); position: relative; }
.approach__step::before { content: ""; position: absolute; top: 0; left: 0; height: 2px; width: 100%;
  background: var(--border-brand); transform: scaleX(0); transform-origin: left;
  transition: transform 0.7s var(--ease-out); transition-delay: var(--d, 0s); }
.approach__step.is-in::before { transform: scaleX(1); }
.approach__n { font-family: var(--font-display); font-size: var(--text-xl); font-variant-numeric: tabular-nums;
  color: var(--fg-brand); display: block; margin-bottom: var(--space-3); }
.approach__step h3 { font-family: var(--font-display); font-weight: var(--fw-regular); font-size: var(--text-lg);
  margin: 0 0 var(--space-2); letter-spacing: -0.01em; }
.approach__step p { margin: 0; font-size: var(--text-sm); color: var(--fg-2); }

/* --------------------------------------------------------------------------
   Closing CTA band
   -------------------------------------------------------------------------- */
.cta-band { background: var(--bg-ink); color: var(--fg-invert); }
.cta-band__inner { display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-8); padding-block: var(--space-16); flex-wrap: wrap; }
.cta-band__title { font-family: var(--font-display); font-weight: var(--fw-regular);
  font-size: var(--text-3xl); letter-spacing: var(--tracking-tight); color: var(--fg-invert);
  margin: 0; line-height: var(--lh-snug); max-width: 20ch; }
.cta-band__lede { color: var(--qm-ink-300); font-size: var(--text-md); margin: var(--space-3) 0 0; max-width: 42ch; }
.cta-band__actions { display: flex; gap: var(--space-3); flex-wrap: wrap; }

/* --------------------------------------------------------------------------
   Services
   -------------------------------------------------------------------------- */
.svc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-5); }
.svc {
  background: var(--bg-1); border: 1px solid var(--border-1); border-radius: var(--radius-lg);
  padding: var(--space-6); box-shadow: var(--shadow-xs);
  transition: border-color var(--duration-fast), box-shadow var(--duration-fast);
}
.svc:hover { border-color: var(--border-2); box-shadow: var(--shadow-sm); }
.svc__icon { color: var(--fg-brand); margin-bottom: var(--space-4); }
.svc__icon svg { width: 26px; height: 26px; }
.svc h3 { font-family: var(--font-display); font-weight: var(--fw-regular); font-size: var(--text-xl);
  margin: 0 0 var(--space-2); letter-spacing: -0.01em; }
.svc__tag { font-style: italic; color: var(--fg-brand); font-size: var(--text-sm); margin: 0 0 var(--space-3); }
.svc__body { font-size: var(--text-sm); color: var(--fg-2); margin: 0; }

/* --------------------------------------------------------------------------
   About
   -------------------------------------------------------------------------- */
.about { background: var(--bg-ink); color: var(--fg-invert); position: relative; overflow: hidden; isolation: isolate; }
.about > .container { position: relative; z-index: 1; }
.about__grid { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: var(--space-16); align-items: start; }

/* Shared depth for dark sections — faint grid + teal glow */
.about::before, .cta-band::before {
  content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 66px 66px;
  -webkit-mask-image: radial-gradient(90% 120% at 88% 0%, #000 0%, transparent 60%);
          mask-image: radial-gradient(90% 120% at 88% 0%, #000 0%, transparent 60%);
}
.about::after, .cta-band::after {
  content: ""; position: absolute; z-index: 0; pointer-events: none;
  width: 560px; height: 560px; right: -140px; top: -160px; border-radius: 50%;
  background: radial-gradient(circle, rgba(44,106,104,0.30), transparent 66%); filter: blur(20px);
}
.cta-band { position: relative; overflow: hidden; isolation: isolate; }
.cta-band > .container { position: relative; z-index: 1; }
.about__title { font-family: var(--font-display); font-weight: var(--fw-regular);
  font-size: var(--text-3xl); letter-spacing: var(--tracking-tight); color: var(--fg-invert); margin: 0; }
.about__body p { color: var(--qm-ink-300); font-size: var(--text-md); margin: 0 0 var(--space-5); text-wrap: pretty; }
.about__stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6);
  margin-top: var(--space-8); padding-top: var(--space-8); border-top: 1px solid rgba(255,255,255,0.10); }
.about__stats .n { font-family: var(--font-display); font-size: var(--text-3xl);
  font-variant-numeric: tabular-nums; color: var(--qm-teal-300); }
.about__stats .l { display: block; font-size: var(--text-sm); color: var(--qm-ink-400); margin-top: var(--space-1); }

/* --------------------------------------------------------------------------
   Contact
   -------------------------------------------------------------------------- */
.contact__grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: var(--space-16); align-items: start; }
.contact__details { list-style: none; padding: 0; margin: var(--space-8) 0 0; display: grid; gap: var(--space-4); }
.contact__details li { display: flex; align-items: center; gap: var(--space-3); color: var(--fg-2); font-size: var(--text-base); }
.contact__details svg { width: 18px; height: 18px; color: var(--fg-brand); flex: none; }
.form { display: grid; gap: var(--space-4); background: var(--bg-2); border: 1px solid var(--border-1);
  border-radius: var(--radius-lg); padding: var(--space-8); }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
.form label { display: grid; gap: 6px; font-size: var(--text-sm); font-weight: var(--fw-medium); color: var(--fg-2); }
.form input, .form textarea, .form select {
  font-family: inherit; font-size: var(--text-base); color: var(--fg-1);
  background: var(--bg-1); border: 1px solid var(--border-2); border-radius: var(--radius-sm);
  padding: 10px 12px; box-shadow: var(--shadow-inset); transition: border-color var(--duration-fast), box-shadow var(--duration-fast);
}
.form input:focus, .form textarea:focus, .form select:focus { outline: none; border-color: var(--border-brand); box-shadow: var(--ring-brand); }
.chips { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.chip { font-size: var(--text-sm); color: var(--fg-2); background: var(--bg-1); border: 1px solid var(--border-2);
  border-radius: var(--radius-pill); padding: 6px 14px; transition: all var(--duration-fast); }
.chip.is-active { background: var(--bg-brand); color: var(--fg-invert); border-color: var(--bg-brand); }
.form__toast { font-size: var(--text-sm); color: var(--status-positive); }

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer { background: var(--bg-ink-2); color: var(--qm-ink-300); padding-block: var(--space-16) var(--space-8);
  position: relative; border-top: 1px solid rgba(255,255,255,0.06); }
.site-footer::before { content: ""; position: absolute; top: -1px; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--qm-teal-600), transparent); opacity: 0.6; }
.site-footer a { transition: color var(--duration-fast) var(--ease-standard); }
.site-footer__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: var(--space-8); }
.site-footer h5 { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: var(--tracking-wide);
  color: var(--qm-ink-400); margin: 0 0 var(--space-4); font-weight: var(--fw-semibold); }
.site-footer a { display: block; color: var(--qm-ink-300); font-size: var(--text-sm); padding-block: 5px; }
.site-footer a:hover { color: var(--fg-invert); }
.site-footer__brand img { height: 32px; margin-bottom: var(--space-3); }
.site-footer__tagline { font-size: var(--text-sm); color: var(--qm-ink-400); margin: 0; max-width: 30ch; }
.site-footer__copy { margin-top: var(--space-12); padding-top: var(--space-6);
  border-top: 1px solid rgba(255,255,255,0.08); font-size: var(--text-xs); color: var(--qm-ink-500);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: var(--space-4); }

/* --------------------------------------------------------------------------
   Scroll reveal
   -------------------------------------------------------------------------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s var(--ease-out),
  transform 0.6s var(--ease-out); transition-delay: var(--d, 0s); }
.reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
  .btn svg, .site-nav a::after { transition: none; }
  .tool-card__badge::before { animation: none; }
  .approach__step::before { transform: scaleX(1); transition: none; }
}

/* --------------------------------------------------------------------------
   Motion polish — micro-interactions
   -------------------------------------------------------------------------- */
.btn svg { transition: transform var(--duration-fast) var(--ease-standard); }
.btn:hover svg { transform: translateX(3px); }
.btn--primary { position: relative; overflow: hidden; }
.btn--primary::after { content: ""; position: absolute; inset: 0; background:
  linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.16) 50%, transparent 70%);
  transform: translateX(-120%); transition: transform 0.6s var(--ease-standard); }
.btn--primary:hover::after { transform: translateX(120%); }

/* animated nav underline */
.site-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 1.5px;
  background: var(--fg-brand); transition: right var(--duration-normal) var(--ease-standard); }
.site-nav a:hover::after { right: 0; }

/* card hover — value shift only (no transform, per brand) with smoother glide */
.tool-card, .svc, .gcard--live, .kpi, .panel { transition: border-color var(--duration-normal) var(--ease-standard),
  box-shadow var(--duration-normal) var(--ease-standard), background var(--duration-normal) var(--ease-standard); }
.svc:hover .svc__icon { color: var(--fg-brand-hover); }

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 960px) {
  .tools__grid, .svc-grid { grid-template-columns: repeat(2, 1fr); }
  .approach__grid { grid-template-columns: repeat(2, 1fr); }
  .kpi-row { grid-template-columns: repeat(2, 1fr); }
  .demo__panels { grid-template-columns: 1fr; }
  .about__grid, .contact__grid { grid-template-columns: 1fr; gap: var(--space-8); }
  .site-footer__grid { grid-template-columns: 1fr 1fr; }
  .cta-band__inner { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 680px) {
  .section { padding-block: var(--space-16); }
  .site-nav, .site-header__actions .btn--ghost { display: none; }
  .nav-toggle { display: inline-flex; }
  .site-nav.is-open { display: flex; position: absolute; top: 68px; left: 0; right: 0; flex-direction: column;
    background: var(--bg-1); border-bottom: 1px solid var(--border-1); padding: var(--space-4) var(--space-6); gap: var(--space-2); }
  .tools__grid, .svc-grid, .approach__grid, .kpi-row, .form__row, .site-footer__grid { grid-template-columns: 1fr; }
  .hero__inner { padding-block: var(--space-20) var(--space-16); }
  .demo__toolbar { flex-direction: column; align-items: stretch; }
}