/* ─────────────────────────────────────────────────────
   QADR BIOTECHNOLOGY — Design System
   ───────────────────────────────────────────────────── */

/* ── VARIABLES ─────────────────────────────────────── */
:root {
  --color-bg:          #F7F6F2;
  --color-bg-dark:     #0D0E0C;
  --color-surface:     #F0EFE9;
  --color-surface-2:   #E8E6DE;
  --color-text:        #1C1A14;
  --color-text-muted:  #6B6963;
  --color-text-faint:  #B0AEA8;
  --color-text-invert: #F7F6F2;
  --color-accent:      #016B70;
  --color-accent-dim:  #0A4A4F;
  --color-accent-glow: #01969D;
  --color-border:      rgba(28, 26, 20, 0.10);
  --color-border-dark: rgba(247, 246, 242, 0.10);
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 8rem;
  --w-narrow:  640px;
  --w-default: 960px;
  --w-wide:    1200px;
  --nav-h: 64px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg:          #111210;
    --color-bg-dark:     #0A0B09;
    --color-surface:     #181917;
    --color-surface-2:   #21221F;
    --color-text:        #F0EEE6;
    --color-text-muted:  #9C9A94;
    --color-text-faint:  #6B6963;
    --color-border:      rgba(247, 246, 242, 0.08);
    --color-border-dark: rgba(247, 246, 242, 0.10);
  }
}

/* ── RESET ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Satoshi', system-ui, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
svg { display: block; }
img { display: block; max-width: 100%; }

/* ── TYPOGRAPHY TOKENS ──────────────────────────────── */
.t-eyebrow {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.t-hero {
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: clamp(3.5rem, 5vw + 1rem, 7.5rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
}
.t-page {
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: clamp(2.5rem, 4vw, 5rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
}
.t-section {
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: clamp(2rem, 3vw + 0.5rem, 4rem);
  line-height: 1.1;
  letter-spacing: -0.015em;
}
.t-sub {
  font-size: clamp(1.125rem, 1.5vw, 1.5rem);
  font-weight: 600;
  line-height: 1.4;
}
.t-body {
  font-size: clamp(1rem, 1.1vw, 1.125rem);
  line-height: 1.75;
  color: var(--color-text-muted);
}
.t-mono {
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
}

/* ── LAYOUT ─────────────────────────────────────────── */
.wrap       { width: 100%; max-width: var(--w-default);  margin: 0 auto; padding: 0 var(--space-md); }
.wrap--wide { width: 100%; max-width: var(--w-wide);     margin: 0 auto; padding: 0 var(--space-md); }
.wrap--nar  { width: 100%; max-width: var(--w-narrow);   margin: 0 auto; padding: 0 var(--space-md); }

.section-pad { padding: var(--space-xl) 0; }
.section-pad--sm { padding: var(--space-lg) 0; }

.s-hdr { margin-bottom: var(--space-lg); }
.s-hdr .t-eyebrow { margin-bottom: var(--space-sm); }
.s-hdr .t-section { margin-top: 0.4rem; }

/* ── NAV ────────────────────────────────────────────── */
#nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background 0.3s, backdrop-filter 0.3s, box-shadow 0.3s;
}
#nav.scrolled {
  background: rgba(247, 246, 242, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--color-border);
}
@media (prefers-color-scheme: dark) {
  #nav.scrolled { background: rgba(17, 18, 16, 0.92); }
}
.nav-inner {
  display: flex; align-items: center; gap: var(--space-md);
  height: var(--nav-h);
  max-width: var(--w-wide); margin: 0 auto; padding: 0 var(--space-md);
}
.wm { display: flex; align-items: baseline; gap: 0.35em; flex-shrink: 0; white-space: nowrap; }
.wm-q { font-size: 1.05rem; font-weight: 700; color: var(--color-text); transition: color 0.3s; }
.wm-b { font-size: 0.85rem; font-weight: 400; color: var(--color-text-muted); transition: color 0.3s; white-space: nowrap; }
#nav.on-dark:not(.scrolled) .wm-q { color: var(--color-text-invert); }
#nav.on-dark:not(.scrolled) .wm-b { color: var(--color-text-faint); }
.nav-links { display: flex; align-items: center; gap: 2rem; margin-left: auto; }
.nav-links a {
  font-size: 0.875rem; font-weight: 500;
  color: var(--color-text-muted);
  position: relative; padding-bottom: 2px;
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--color-text); }
.nav-links a.active { color: var(--color-accent); }
.nav-links a.active::after {
  content: ''; position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 2px; background: var(--color-accent); border-radius: 1px;
}
#nav.on-dark:not(.scrolled) .nav-links a { color: var(--color-text-faint); }
#nav.on-dark:not(.scrolled) .nav-links a:hover { color: var(--color-text-invert); }
#nav.on-dark:not(.scrolled) .nav-links a.active { color: var(--color-accent-glow); }
#nav.on-dark:not(.scrolled) .nav-links a.active::after { background: var(--color-accent-glow); }
.nav-cta {
  font-size: 0.8rem; font-weight: 600;
  padding: 0.45rem 1.1rem;
  background: var(--color-accent); color: #fff; border-radius: 3px;
  white-space: nowrap; flex-shrink: 0;
  transition: background 0.15s;
}
.nav-cta:hover { background: var(--color-accent-dim); }
.ham { display: none; flex-direction: column; gap: 5px; padding: 6px; margin-left: auto; }
.ham span { display: block; width: 20px; height: 1.5px; background: var(--color-text); transition: background 0.3s; }
#nav.on-dark:not(.scrolled) .ham span { background: var(--color-text-invert); }

/* ── MOBILE MENU ────────────────────────────────────── */
#mob-menu {
  display: none; position: fixed; inset: 0;
  background: var(--color-bg-dark); z-index: 99;
  flex-direction: column; align-items: center; justify-content: center;
  gap: var(--space-md);
  opacity: 0; pointer-events: none; transition: opacity 0.2s;
}
#mob-menu.open { opacity: 1; pointer-events: all; }
#mob-menu a {
  font-family: 'Instrument Serif', serif;
  font-size: 2.5rem; color: var(--color-text-invert);
  transition: color 0.15s;
}
#mob-menu a:hover { color: var(--color-accent-glow); }
#mob-menu .mob-close {
  position: absolute; top: 18px; right: 24px;
  font-size: 1.6rem; color: var(--color-text-faint); cursor: pointer;
}

/* ── BUTTONS ────────────────────────────────────────── */
.btn {
  display: inline-block; font-size: 0.875rem; font-weight: 600;
  padding: 0.75rem 1.75rem; border-radius: 3px; transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.btn-teal { background: var(--color-accent); color: #fff; }
.btn-teal:hover { background: var(--color-accent-dim); }
.btn-ghost-dk { border: 1px solid rgba(247,246,242,0.25); color: var(--color-text-invert); }
.btn-ghost-dk:hover { border-color: rgba(247,246,242,0.5); background: rgba(247,246,242,0.04); }
.btn-ghost-lt { border: 1px solid var(--color-border); color: var(--color-text); }
.btn-ghost-lt:hover { border-color: var(--color-accent); color: var(--color-accent); }
.tlink { font-size: 0.9rem; font-weight: 600; color: var(--color-accent); transition: opacity 0.15s; }
.tlink:hover { opacity: 0.65; }
.tlink-inv { color: var(--color-text-faint); }
.tlink-inv:hover { color: var(--color-text-invert); opacity: 1; }

/* ── BADGES / TAGS ──────────────────────────────────── */
.badge {
  display: inline-block; font-size: 0.68rem; font-weight: 600;
  letter-spacing: 0.06em; text-transform: uppercase;
  padding: 0.2rem 0.6rem; border-radius: 2px;
  background: rgba(1,107,112,0.15); color: var(--color-accent-glow);
  border: 1px solid rgba(1,107,112,0.25);
}

/* ── SCROLL REVEAL ──────────────────────────────────── */
/* Elements are visible by default. JS sets inline opacity:0 on below-fold elements only. */
.rv { transition: opacity 0.44s ease-out, transform 0.44s ease-out; }
.rv.vis { opacity: 1 !important; transform: none !important; }

/* ── PAGE TRANSITIONS ───────────────────────────────── */
@keyframes pg-in  { from { opacity: 0; } to { opacity: 1; } }
@keyframes pg-out { from { opacity: 1; } to { opacity: 0; } }
.pg-enter { animation: pg-in  0.15s ease-out forwards; }
.pg-exit  { animation: pg-out 0.15s ease-out forwards; }

/* ── PARTICLES ──────────────────────────────────────── */
.ptcl-field { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
.ptcl {
  position: absolute; border-radius: 50%;
  background: var(--color-accent-glow); opacity: 0;
  animation: drift linear infinite;
}
@keyframes drift {
  0%   { transform: translate(0,0); opacity: 0; }
  10%  { opacity: 0.11; }
  90%  { opacity: 0.07; }
  100% { transform: translate(var(--dx),var(--dy)); opacity: 0; }
}

/* ── DARK SECTIONS ──────────────────────────────────── */
.dk { background: var(--color-bg-dark); }
.lt { background: var(--color-bg); }
.sf { background: var(--color-surface); }

/* ── HOME HERO ──────────────────────────────────────── */
.hero-home {
  min-height: 100vh; position: relative; overflow: hidden;
  display: flex; align-items: center;
}
.hero-home__in {
  display: grid; grid-template-columns: 3fr 2fr;
  gap: var(--space-xl); align-items: center;
  max-width: var(--w-wide); margin: 0 auto;
  padding: calc(var(--nav-h) + var(--space-xl)) var(--space-md) var(--space-xl);
  position: relative; z-index: 1;
}
.hero-home .t-eyebrow { color: var(--color-accent-glow); margin-bottom: var(--space-sm); }
.hero-home .t-hero { color: var(--color-text-invert); margin-bottom: var(--space-sm); }
.hero-home .subln {
  font-size: clamp(1rem,1.4vw,1.2rem); font-weight: 600;
  color: var(--color-text-faint); margin-bottom: var(--space-md);
}
.hero-home .t-body { color: var(--color-text-faint); max-width: 500px; margin-bottom: var(--space-md); }
.hero-ctas { display: flex; gap: var(--space-sm); flex-wrap: wrap; }

/* Bio network SVG */
.bio-net { width: 100%; max-width: 340px; opacity: 0.85; }
@keyframes nring { 0%,100%{transform:scale(1);opacity:.08} 50%{transform:scale(1.7);opacity:0} }
.nring { transform-box: fill-box; transform-origin: center; animation: nring var(--dur,4s) ease-in-out infinite var(--dly,0s); }

/* ── OPERATING THESIS ───────────────────────────────── */
.thesis-inner {
  max-width: var(--w-narrow); margin: 0 auto;
  padding: var(--space-xl) var(--space-md);
  text-align: center;
}
.thesis-inner .t-eyebrow { margin-bottom: var(--space-sm); }
.thesis-inner .t-section { margin-bottom: var(--space-sm); }
.thesis-inner .t-body { max-width: 500px; margin: 0 auto; }

/* ── OPERATING SEQUENCE ─────────────────────────────── */
.seq-wrap { padding: var(--space-xl) var(--space-md); position: relative; }
.seq-hdr { text-align: center; margin-bottom: var(--space-lg); }
.seq-hdr .t-eyebrow { color: var(--color-accent-glow); margin-bottom: var(--space-sm); }
.seq-hdr .t-section { color: var(--color-text-invert); }

/* Desktop circuit SVG */
.circ-dt { display: block; width: 100%; overflow: visible; }
.circ-mb { display: none; }
.cpath {
  fill: none; stroke: var(--color-accent-glow); stroke-width: 1.5;
  stroke-linecap: round; stroke-linejoin: round;
}
@keyframes cring { 0%,100%{r:18;opacity:.18} 50%{r:26;opacity:.05} }
.cring { animation: cring var(--dur,4s) ease-in-out infinite var(--dly,0s); fill: none; stroke: var(--color-accent-glow); stroke-width:1; }
.cdot { fill: var(--color-accent); transition: fill 0.3s; }
.cdot.lit { fill: var(--color-accent-glow); }

/* Labels grid */
.clabels {
  display: flex; justify-content: space-between;
  margin-top: var(--space-md);
  gap: var(--space-sm);
}
.cninfo { flex: 1; text-align: center; padding: 0 0.5rem; }
.cninfo .t-mono { color: var(--color-accent-glow); display: block; margin-bottom: 0.5rem; text-transform: uppercase; font-weight: 500; }
.cninfo > p { font-size: 0.82rem; color: var(--color-text-faint); line-height: 1.55; }
.cninfo .dtext {
  font-size: 0.78rem; color: var(--color-text-faint); line-height: 1.5; margin-top: 0.75rem;
  max-height: 0; overflow: hidden; transition: max-height 0.35s ease-out;
}
.cninfo.xp .dtext { max-height: 300px; }
.cninfo[data-exp] { cursor: pointer; }
.cninfo[data-exp] .t-mono::after { content: ' ↓'; opacity: 0.45; font-size: 0.65rem; }
.cninfo[data-exp].xp .t-mono::after { content: ' ↑'; }

.seq-foot { text-align: center; margin-top: var(--space-lg); }

/* Mobile vertical circuit */
.csteps { display: flex; flex-direction: column; gap: 0; }
.cstep { display: flex; gap: 1.5rem; }
.cstep__ind { display: flex; flex-direction: column; align-items: center; flex-shrink: 0; }
.cstep__dot { width: 14px; height: 14px; border-radius: 50%; background: var(--color-accent); flex-shrink: 0; margin-top: 2px; }
.cstep__line { width: 1.5px; flex: 1; min-height: 48px; background: linear-gradient(to bottom, var(--color-accent-glow), transparent); opacity: 0.3; }
.cstep:last-child .cstep__line { display: none; }
.cstep__body { padding-bottom: var(--space-md); }
.cstep__body .t-mono { color: var(--color-accent-glow); display: block; margin-bottom: 0.35rem; text-transform: uppercase; }
.cstep__body p { font-size: 0.85rem; color: var(--color-text-faint); line-height: 1.55; }

/* ── THREE PILLARS ──────────────────────────────────── */
.pillar-wrap { padding: var(--space-xl) var(--space-md); }
.pillar-hdr { margin-bottom: var(--space-lg); }
.pillar {
  display: grid; grid-template-columns: 200px 1fr 48px;
  align-items: center; gap: var(--space-md);
  padding: var(--space-md) 0;
  border-top: 1px solid var(--color-border);
}
.pillar:last-child { border-bottom: 1px solid var(--color-border); }
.pillar-lbl { font-size: 0.72rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-accent); }
.pillar-body { font-size: clamp(0.875rem,1.1vw,1rem); color: var(--color-text-muted); line-height: 1.65; }
.pillar-icon { opacity: 0.35; }

/* ── VENTURE TILES (Home) ───────────────────────────── */
.vc-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 1px; background: var(--color-border);
  border: 1px solid var(--color-border);
  margin-top: var(--space-lg);
}
.vtile {
  background: #1C1A14; padding: var(--space-lg) var(--space-md);
  display: flex; flex-direction: column; gap: 0.75rem;
  transition: background 0.2s;
}
.vtile:hover { background: #242219; }
.vtile__nm { font-family: 'Instrument Serif', serif; font-size: clamp(1.5rem,2.5vw,2.25rem); color: var(--color-text-invert); line-height: 1.1; }
.vtile__cat { font-size: 0.68rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-accent-glow); }
.vtile__desc { font-size: 0.85rem; color: var(--color-text-faint); margin-top: auto; line-height: 1.5; }

/* ── MANIFESTO CLOSE ────────────────────────────────── */
.manifesto { padding: var(--space-xl) var(--space-md); text-align: center; }
.manifesto .t-section { color: var(--color-text-invert); max-width: 780px; margin: 0 auto var(--space-sm); }
.manifesto .msub { font-size: 1rem; color: var(--color-text-faint); }

/* ── PAGE HEROES ────────────────────────────────────── */
.page-hero {
  padding: calc(var(--nav-h) + var(--space-xl)) var(--space-md) var(--space-xl);
  max-width: var(--w-wide); margin: 0 auto;
}
.page-hero .t-eyebrow { color: var(--color-accent-glow); margin-bottom: var(--space-sm); }
.page-hero .t-page { color: var(--color-text-invert); margin-bottom: var(--space-sm); }
.page-hero .t-body { color: var(--color-text-faint); max-width: 680px; }
.page-hero--lt .t-eyebrow { color: var(--color-accent); }
.page-hero--lt .t-page { color: var(--color-text); }
.page-hero--lt .t-body { color: var(--color-text-muted); }

/* ── PLATFORM PAGE ──────────────────────────────────── */
.platform-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-xl); align-items: start; }
.platform-prose { font-size: clamp(0.95rem,1.1vw,1rem); color: var(--color-text-muted); line-height: 1.8; }
.cap-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--color-border); border: 1px solid var(--color-border); margin-top: var(--space-lg); }
.cap-item { background: var(--color-bg); padding: var(--space-md); }
.cap-item h3 { font-size: 0.875rem; font-weight: 700; margin-bottom: 0.5rem; }
.cap-item p { font-size: 0.8rem; color: var(--color-text-muted); line-height: 1.55; }

/* ── VENTURES PAGE ──────────────────────────────────── */
.vfeature { padding: var(--space-xl) var(--space-md); }
.vfeature__in { max-width: var(--w-default); margin: 0 auto; }
.vfeature__tag { font-size: 0.68rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-accent-glow); margin-bottom: var(--space-sm); }
.vfeature__nm { font-family: 'Instrument Serif', serif; font-size: clamp(2.5rem,5vw,5rem); line-height: 1.05; margin-bottom: var(--space-sm); }
.dk .vfeature__nm { color: var(--color-text-invert); }
.lt .vfeature__nm, .sf .vfeature__nm { color: var(--color-text); }
.vfeature__hl { font-size: clamp(1rem,1.5vw,1.2rem); font-weight: 600; margin-bottom: var(--space-sm); }
.dk .vfeature__hl { color: var(--color-text-invert); }
.lt .vfeature__hl, .sf .vfeature__hl { color: var(--color-text); }
.vfeature__body { max-width: 580px; line-height: 1.75; margin-bottom: var(--space-md); }
.dk .vfeature__body { color: var(--color-text-faint); }
.lt .vfeature__body, .sf .vfeature__body { color: var(--color-text-muted); }
.vfeature__ent { font-family: 'JetBrains Mono', monospace; font-size: 0.68rem; color: var(--color-text-faint); margin-bottom: var(--space-md); letter-spacing: 0.04em; }

/* ── ABOUT PAGE ─────────────────────────────────────── */
.about-hero { padding: calc(var(--nav-h) + var(--space-xl)) var(--space-md) var(--space-xl); max-width: var(--w-default); margin: 0 auto; }
.about-hero .t-eyebrow { margin-bottom: var(--space-sm); }
.about-hero .t-page { margin-bottom: var(--space-sm); color: var(--color-text); }

.struct-cols { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-lg); border: 1px solid var(--color-border); padding: var(--space-lg); border-radius: 2px; margin-top: var(--space-lg); }
.struct-col h3 { font-size: 0.875rem; font-weight: 700; margin-bottom: 0.5rem; }
.struct-col p { font-size: 0.875rem; color: var(--color-text-muted); line-height: 1.7; }
.struct-col + .struct-col { border-left: 1px solid var(--color-border); padding-left: var(--space-lg); }

.pull-q {
  font-family: 'Instrument Serif', serif; font-style: italic;
  font-size: clamp(1.4rem,2.2vw,2.2rem); text-align: center;
  max-width: 680px; margin: var(--space-lg) auto; line-height: 1.35;
  color: var(--color-text);
}

.team-ph { display: inline-block; border: 1px solid var(--color-border); padding: var(--space-md) var(--space-lg); border-radius: 2px; margin-top: var(--space-md); }
.team-ph .prole { font-size: 0.68rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-accent); display: block; margin-bottom: 0.3rem; }
.team-ph .ptitle { font-size: 0.875rem; color: var(--color-text-muted); }

/* ── CONTACT PAGE ───────────────────────────────────── */
.ctrack {
  padding: var(--space-md) 0;
  border-top: 1px solid var(--color-border);
  display: grid; grid-template-columns: 220px 1fr 260px;
  align-items: start; gap: var(--space-md);
  max-width: var(--w-default); margin: 0 auto;
}
.ctrack:last-of-type { border-bottom: 1px solid var(--color-border); }
.ctrack__lbl { font-size: 0.72rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-accent); padding-top: 0.15rem; }
.ctrack__body { font-size: 0.875rem; color: var(--color-text-muted); line-height: 1.65; }
.ctrack__link { font-size: 0.82rem; color: var(--color-text-muted); line-height: 1.9; }
.ctrack__link a { color: var(--color-accent); transition: opacity 0.15s; }
.ctrack__link a:hover { opacity: 0.65; }
.ent-block { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-lg); background: var(--color-surface); padding: var(--space-lg); border-radius: 2px; margin-top: var(--space-lg); }
.ent-col h3 { font-size: 0.85rem; font-weight: 700; margin-bottom: 0.4rem; }
.ent-col p { font-size: 0.85rem; color: var(--color-text-muted); line-height: 1.6; }
.ent-col + .ent-col { border-left: 1px solid var(--color-border); padding-left: var(--space-lg); }

/* ── PROSE ──────────────────────────────────────────── */
.prose { padding: var(--space-xl) var(--space-md); }
.prose__in { max-width: var(--w-narrow); margin: 0 auto; }
.prose__in p { font-size: clamp(1rem,1.1vw,1.1rem); color: var(--color-text-muted); line-height: 1.8; }
.prose__in p + p { margin-top: var(--space-md); }

/* ── CTA SECTION ────────────────────────────────────── */
.cta-sec { padding: var(--space-xl) var(--space-md); text-align: center; }
.cta-sec .t-section { margin-bottom: var(--space-sm); }
.cta-sec .t-body { max-width: 460px; margin: 0 auto var(--space-lg); }
.cta-btns { display: flex; gap: var(--space-sm); justify-content: center; flex-wrap: wrap; }

/* ── ORG CHART / SCHEMATICS ─────────────────────────── */
.org-svg text { font-family: 'Satoshi', sans-serif; }

/* ── FOOTER ─────────────────────────────────────────── */
#footer {
  background: var(--color-bg-dark);
  border-top: 1px solid var(--color-border-dark);
  padding: var(--space-xl) var(--space-md) var(--space-md);
}
.foot-top {
  display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-lg); max-width: var(--w-wide); margin: 0 auto;
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border-dark);
}
.foot-wm .wm-q { color: var(--color-text-invert); font-size: 1.15rem; }
.foot-wm .wm-b { color: var(--color-text-faint); }
.foot-col h4 { font-size: 0.7rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-text-faint); margin-bottom: var(--space-sm); }
.foot-col ul { display: flex; flex-direction: column; gap: 0.5rem; }
.foot-col a { font-size: 0.825rem; color: var(--color-text-faint); transition: color 0.15s; }
.foot-col a:hover { color: var(--color-text-invert); }
.foot-col .femail { font-size: 0.825rem; color: var(--color-text-faint); }
.foot-bot { max-width: var(--w-wide); margin: var(--space-md) auto 0; text-align: center; }
.foot-legal { font-size: 0.72rem; color: var(--color-text-faint); line-height: 2; }

/* ── RESPONSIVE ─────────────────────────────────────── */
@media (max-width: 960px) {
  .hero-home__in { grid-template-columns: 1fr; }
  .bio-net { display: none; }
  .platform-grid { grid-template-columns: 1fr; }
  .cap-grid { grid-template-columns: 1fr; }
  .struct-cols { grid-template-columns: 1fr; }
  .struct-col + .struct-col { border-left: none; padding-left: 0; border-top: 1px solid var(--color-border); padding-top: var(--space-lg); }
  .ent-block { grid-template-columns: 1fr; }
  .ent-col + .ent-col { border-left: none; padding-left: 0; border-top: 1px solid var(--color-border); padding-top: var(--space-md); }
  .foot-top { grid-template-columns: 1fr 1fr; }
  .vc-grid { grid-template-columns: 1fr; }
  .circ-dt { display: none; }
  .circ-mb { display: block; }
  .clabels { display: none; }
  .pillar { grid-template-columns: 1fr; }
  .pillar-icon { display: none; }
  .ctrack { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .nav-links, .nav-cta { display: none; }
  .ham { display: flex; }
  #mob-menu { display: flex; }
  .foot-top { grid-template-columns: 1fr; }
  :root { --space-xl: 5rem; --space-lg: 3rem; }
}

/* ── ACCESSIBILITY ──────────────────────────────────── */
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 3px; }

/* ── REDUCED MOTION ─────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .rv { opacity: 1; transform: none; }
}