/* ==========================================================================
   BIO
   Brand-driven corporate site
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=Open+Sans:wght@300;400;500;600;700&family=Archivo+Narrow:wght@400;500;600;700&display=swap');

/* ---------- Tokens ------------------------------------------------------ */
:root {
  --bio-navy:        #1B2C6C;
  --bio-navy-2:      #1F3D6B;
  --bio-navy-deep:   #0F1B47;
  --bio-navy-ink:    #0A1438;
  --bio-red:         #CC261B;
  --bio-red-2:       #951D28;
  --bio-steel:       #353F59;
  --bio-paper:       #FAFAF8;       /* off-white, hint cálido */
  --bio-paper-2:     #F1F0EB;       /* section alterna, sutil */
  --bio-line:        rgba(15, 27, 71, 0.10);
  --bio-mute:        #6A6F80;
  --bio-white:       #FFFFFF;

  --font-display:    'Bebas Neue', 'Archivo Narrow', system-ui, sans-serif;
  --font-condensed:  'Archivo Narrow', 'Bebas Neue', system-ui, sans-serif;
  --font-body:       'Open Sans', system-ui, -apple-system, sans-serif;

  --maxw:            1320px;
  --gutter:          clamp(20px, 4vw, 56px);
  --radius-lg:       28px;
  --radius-md:       18px;
  --radius-sm:       10px;

  --ease:            cubic-bezier(0.16, 1, 0.3, 1);
  --t-fast:          240ms var(--ease);
  --t-med:           480ms var(--ease);
  --t-slow:          900ms var(--ease);
}

/* ---------- Reset ------------------------------------------------------- */
*,*::before,*::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--bio-navy-ink);
  background: var(--bio-paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
button { font: inherit; border: 0; background: 0; cursor: pointer; color: inherit; }
a { color: inherit; text-decoration: none; }
input, textarea, select { font: inherit; color: inherit; }

/* ---------- Typography -------------------------------------------------- */
.eyebrow {
  font-family: var(--font-display);
  letter-spacing: 0.22em;
  font-size: 12px;
  text-transform: uppercase;
  color: var(--bio-red);
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.eyebrow::before {
  content: "";
  width: 28px; height: 1px;
  background: var(--bio-red);
  display: inline-block;
}
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 0.92;
  letter-spacing: -0.005em;
  color: var(--bio-navy-ink);
}
h1.display {
  font-size: clamp(64px, 11vw, 192px);
  letter-spacing: -0.02em;
}
h2.section-title {
  font-size: clamp(35px, 5.2vw, 83px);
  letter-spacing: -0.01em;
}
h3 {
  font-size: clamp(22px, 2.9vw, 38px);
  letter-spacing: 0;
}
.lead {
  font-size: clamp(17px, 1.4vw, 21px);
  max-width: 60ch;
  color: var(--bio-steel);
  line-height: 1.55;
}
p { max-width: 65ch; color: var(--bio-steel); }

/* ---------- Layout primitives ------------------------------------------ */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  padding: 0 var(--gutter);
  margin: 0 auto;
}
.section { padding: clamp(72px, 10vw, 144px) 0; position: relative; }
.section--tight { padding: clamp(48px, 6vw, 88px) 0; }
.section--dark  { background: var(--bio-navy-ink); color: var(--bio-paper); }
.section--dark p { color: rgba(244, 241, 234, 0.7); }
.section--dark h1, .section--dark h2, .section--dark h3 { color: var(--bio-paper); }
.section--paper { background: var(--bio-paper-2); }

/* ---------- Buttons ----------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  border-radius: 999px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.02em;
  transition: transform var(--t-fast), background var(--t-fast), color var(--t-fast), box-shadow var(--t-fast);
  will-change: transform;
}
.btn:active { transform: translateY(1px) scale(0.98); }
.btn--primary {
  background: var(--bio-red);
  color: #fff;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.18), 0 10px 30px -12px rgba(204, 38, 27, 0.55);
}
.btn--primary:hover { background: var(--bio-red-2); }
.btn--ghost {
  background: transparent;
  color: var(--bio-navy-ink);
  border: 1px solid var(--bio-line);
}
.btn--ghost:hover { background: rgba(15,27,71,0.05); }
.btn--invert {
  background: var(--bio-paper);
  color: var(--bio-navy-ink);
}
.btn .arrow { transition: transform var(--t-fast); }
.btn:hover .arrow { transform: translateX(4px); }

/* ---------- BIO signal-arc motif --------------------------------------- */
.signal {
  display: inline-block;
  --c: var(--bio-red);
}
.signal svg { width: 100%; height: 100%; overflow: visible; }
.signal path { fill: none; stroke: var(--c); stroke-width: 6; stroke-linecap: round; }

@keyframes signal-pulse {
  0%   { opacity: 0.55; transform: scale(1);   }
  50%  { opacity: 1;    transform: scale(1.03);}
  100% { opacity: 0.55; transform: scale(1);   }
}
.signal--animated path:nth-child(1) { animation: signal-pulse 2.6s var(--ease) infinite; }
.signal--animated path:nth-child(2) { animation: signal-pulse 2.6s var(--ease) infinite; animation-delay: 0.25s; }
.signal--animated path:nth-child(3) { animation: signal-pulse 2.6s var(--ease) infinite; animation-delay: 0.5s; }

/* Decorative giant arcs (used as backgrounds) */
.arc-stage {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}
.arc-stage svg { position: absolute; overflow: visible; }

/* ---------- Navigation -------------------------------------------------- */
.nav {
  position: fixed;
  inset: 16px 16px auto 16px;
  z-index: 80;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px 12px 22px;
  background: rgba(244, 241, 234, 0.78);
  backdrop-filter: saturate(160%) blur(18px);
  -webkit-backdrop-filter: saturate(160%) blur(18px);
  border: 1px solid rgba(15,27,71,0.06);
  border-radius: 999px;
  box-shadow: 0 24px 50px -28px rgba(15,27,71,0.25), inset 0 1px 0 rgba(255,255,255,0.6);
  transition: background var(--t-med), border-color var(--t-med);
}
.nav.is-dark {
  background: rgba(10, 20, 56, 0.6);
  border-color: rgba(255,255,255,0.08);
  color: var(--bio-paper);
}
.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.nav__logo {
  height: 28px;
  width: auto;
  display: block;
  transition: opacity var(--t-fast);
}
.nav__brand:hover .nav__logo { opacity: 0.85; }
.nav.is-dark .nav__logo,
.footer .nav__logo { filter: brightness(0) invert(1); opacity: 0.92; }
.nav.is-dark .nav__brand:hover .nav__logo,
.footer .nav__brand:hover .nav__logo { opacity: 0.78; }
.footer .nav__logo { height: 30px; }

.nav__list {
  display: flex;
  gap: 4px;
  list-style: none;
  padding: 0;
}
.nav__list a, .nav__list button {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  border-radius: 999px;
  transition: background var(--t-fast), color var(--t-fast);
}
.nav__list a:hover, .nav__list button:hover { background: rgba(15,27,71,0.06); }
.nav.is-dark .nav__list a:hover, .nav.is-dark .nav__list button:hover { background: rgba(255,255,255,0.08); }
.nav__list .is-active { color: var(--bio-red); }
.nav__list .caret {
  width: 10px; height: 10px;
  border-right: 1.6px solid currentColor;
  border-bottom: 1.6px solid currentColor;
  transform: rotate(45deg) translate(-2px, -2px);
}

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bio-navy);
  color: var(--bio-paper);
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  transition: background var(--t-fast), transform var(--t-fast);
}
.nav__cta:hover { background: var(--bio-red); transform: translateY(-1px); }

/* Mega menu panel */
.megamenu {
  position: fixed;
  top: 76px; left: 50%;
  transform: translate(-50%, -12px);
  width: min(960px, calc(100vw - 32px));
  background: var(--bio-paper);
  border: 1px solid var(--bio-line);
  border-radius: var(--radius-lg);
  box-shadow: 0 50px 90px -40px rgba(15,27,71,0.35);
  padding: 28px;
  z-index: 79;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-fast), transform var(--t-med);
}
.megamenu.is-open {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, 0);
}
.megamenu__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
.megamenu__col h5 {
  font-family: var(--font-display);
  color: var(--bio-red);
  font-size: 13px;
  letter-spacing: 0.22em;
  margin-bottom: 14px;
}
.megamenu__col ul { list-style: none; padding: 0; display: grid; gap: 4px; }
.megamenu__col a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 12px;
  border-radius: 12px;
  font-size: 15px;
  transition: background var(--t-fast);
}
.megamenu__col a:hover { background: rgba(15,27,71,0.05); }
.megamenu__col a .num {
  font-family: var(--font-condensed);
  font-size: 12px;
  color: var(--bio-mute);
}

/* Mobile nav toggle */
.nav__burger { display: none; }
.mobile-drawer { display: none; }

/* ---------- Hero -------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100dvh;
  display: grid;
  align-items: end;
  padding: 140px 0 60px;
  background: var(--bio-paper);
  overflow: hidden;
}
.hero__grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 56px;
  align-items: end;
}
.hero__logo {
  display: block;
  height: clamp(34px, 3.6vw, 56px);
  width: auto;
  max-width: 280px;
  margin-bottom: 22px;
}
.hero__title {
  font-size: clamp(54px, 10.4vw, 176px);
  letter-spacing: -0.03em;
  line-height: 0.88;
  color: var(--bio-navy-ink);
}
.hero__title em {
  font-style: normal;
  color: var(--bio-red);
  display: inline-block;
  position: relative;
}
.hero__title em::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0.05em;
  height: 6px;
  background: var(--bio-red);
  opacity: 0.18;
  border-radius: 4px;
}
.hero__sub {
  font-size: clamp(16px, 1.5vw, 19px);
  color: var(--bio-steel);
  margin: 20px 0 28px;
  max-width: 44ch;
}
.hero__ctas { display: flex; gap: 12px; flex-wrap: wrap; }

.hero__aside {
  display: grid;
  gap: 12px;
}
.hero__metric {
  border-top: 1px solid var(--bio-line);
  padding: 18px 4px;
}
.hero__metric .num {
  font-family: var(--font-display);
  font-size: clamp(40px, 5vw, 64px);
  color: var(--bio-navy);
  letter-spacing: -0.01em;
}
.hero__metric .lbl {
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--bio-mute);
}

/* Hero giant arc backdrop */
.hero .arc-stage svg.arc-big {
  top: -10%; right: -12%; width: 90vw; max-width: 1200px;
  opacity: 0.85;
}
.hero .arc-stage svg.arc-big circle {
  stroke: var(--bio-navy);
  stroke-width: 1.2;
  fill: transparent;
  opacity: 0.07;
  transform-box: fill-box;
  transform-origin: center;
  -webkit-transform-origin: center;
  animation: signal-wave 11s var(--ease) infinite;
  will-change: opacity, transform;
}
.hero .arc-stage svg.arc-big circle:nth-child(1) { animation-delay: 0s; }
.hero .arc-stage svg.arc-big circle:nth-child(2) { animation-delay: 1.1s; }
.hero .arc-stage svg.arc-big circle:nth-child(3) { animation-delay: 2.2s; }
.hero .arc-stage svg.arc-big circle:nth-child(4) { animation-delay: 3.3s; }
.hero .arc-stage svg.arc-big circle:nth-child(5) { animation-delay: 4.4s; }

/* Pulso radar: emerge desde el centro y se desvanece (muy tenue, muy lento) */
.hero .arc-stage svg.arc-big .signal-pulse {
  stroke: var(--bio-navy);
  stroke-width: 1.5;
  fill: transparent;
  opacity: 0;
  transform-box: fill-box;
  transform-origin: center;
  -webkit-transform-origin: center;
  animation: signal-pulse-out 12s cubic-bezier(0.16, 1, 0.3, 1) infinite;
  will-change: opacity, transform;
}
.hero .arc-stage svg.arc-big .signal-pulse--2 { animation-delay: 3s; }
.hero .arc-stage svg.arc-big .signal-pulse--3 { animation-delay: 6s; }
.hero .arc-stage svg.arc-big .signal-pulse--4 { animation-delay: 9s; }
@keyframes signal-pulse-out {
  0%   { opacity: 0;    transform: scale(0.6); stroke-width: 2.5; }
  10%  { opacity: 0.28; }
  100% { opacity: 0;    transform: scale(8.5); stroke-width: 0.2; }
}

.hero .arc-stage svg.arc-red {
  bottom: -28%; left: -8%; width: 70vw; max-width: 900px;
  opacity: 0.9;
}
.hero .arc-stage svg.arc-red circle {
  stroke: var(--bio-red);
  stroke-width: 1;
  fill: transparent;
  opacity: 0.07;
  transform-box: fill-box;
  transform-origin: center;
  -webkit-transform-origin: center;
  animation: signal-wave 11s var(--ease) infinite;
  will-change: opacity, transform;
}
.hero .arc-stage svg.arc-red circle:nth-child(1) { animation-delay: 5.5s; }
.hero .arc-stage svg.arc-red circle:nth-child(2) { animation-delay: 6.6s; }
.hero .arc-stage svg.arc-red circle:nth-child(3) { animation-delay: 7.7s; }
.hero .arc-stage svg.arc-red circle:nth-child(4) { animation-delay: 8.8s; }

@keyframes signal-wave {
  0%, 70%, 100% { opacity: 0.22; transform: scale(1); }
  18%           { opacity: 0.50; transform: scale(1.012); }
}

.hero .arc-stage .radar-line {
  position: absolute;
  top: 42%;
  right: 12%;
  width: min(42vw, 520px);
  height: 2px;
  transform-origin: 0 50%;
  background: linear-gradient(90deg, rgba(27,44,108,0), rgba(27,44,108,0.16));
  border-radius: 999px;
  opacity: 0.72;
  animation: radar-line-rotate 18s linear infinite;
  will-change: transform;
}
@keyframes radar-line-rotate {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}


/* Pagehead arcs — mismo efecto radar en páginas internas (lento + tenue) */
.pagehead .arc-stage svg circle {
  fill: none;
  stroke: rgba(244,241,234,0.22);
  stroke-width: 1;
  opacity: 0.12;
  transform-box: fill-box;
  transform-origin: center;
  -webkit-transform-origin: center;
  animation: signal-wave-dark 12s var(--ease) infinite;
  will-change: opacity, transform;
}
.pagehead .arc-stage svg circle:nth-child(1) { animation-delay: 0s; }
.pagehead .arc-stage svg circle:nth-child(2) { animation-delay: 1.2s; }
.pagehead .arc-stage svg circle:nth-child(3) { animation-delay: 2.4s; }
.pagehead .arc-stage svg circle:nth-child(4) { animation-delay: 3.6s; }
.pagehead .arc-stage svg circle:nth-child(5) { animation-delay: 4.8s; }

@keyframes signal-wave-dark {
  0%, 70%, 100% { opacity: 0.10; transform: scale(1); }
  20%           { opacity: 0.30; transform: scale(1.012); }
}

/* Floating signal mark in hero */
.hero__signal {
  position: absolute;
  right: 6vw;
  top: 22%;
  width: clamp(180px, 22vw, 320px);
  opacity: 0.9;
  z-index: 1;
}

/* Scroll cue */
.scroll-cue {
  position: absolute;
  left: var(--gutter);
  bottom: 40px;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-display);
  letter-spacing: 0.22em;
  font-size: 12px;
  color: var(--bio-mute);
  z-index: 3;
}
.scroll-cue .line {
  width: 60px; height: 1px;
  background: var(--bio-mute);
  position: relative;
  overflow: hidden;
}
.scroll-cue .line::after {
  content: ""; position: absolute; inset: 0;
  background: var(--bio-red);
  transform: translateX(-100%);
  animation: cue 2.4s var(--ease) infinite;
}
@keyframes cue { 0%{transform:translateX(-100%)}50%{transform:translateX(0)}100%{transform:translateX(100%)} }

/* ---------- About brief ------------------------------------------------ */
.about-brief {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 60px;
  align-items: end;
}
.about-brief__offices {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-top: 36px;
  border-top: 1px solid var(--bio-line);
  padding-top: 24px;
}
.about-brief__office-label {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--bio-mute);
}
.about-brief__office-address {
  margin-top: 6px;
}

/* ---------- Marquee ---------------------------------------------------- */
.marquee {
  border-top: 1px solid var(--bio-line);
  border-bottom: 1px solid var(--bio-line);
  padding: 22px 0;
  overflow: hidden;
  background: var(--bio-paper);
  position: relative;
}
.marquee__track {
  display: flex;
  gap: 60px;
  width: max-content;
  animation: scroll-x 38s linear infinite;
}
.marquee__track span {
  font-family: var(--font-display);
  font-size: clamp(20px, 2.4vw, 28px);
  color: var(--bio-navy);
  letter-spacing: 0.08em;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 60px;
}
.marquee__track span::after {
  content: "•";
  color: var(--bio-red);
}
@keyframes scroll-x { from{transform:translateX(0)} to{transform:translateX(-50%)} }

/* ---------- Bento grid (Units) ----------------------------------------- */
.bento {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 18px;
}
.bento__card {
  position: relative;
  background: var(--bio-white);
  border: 1px solid var(--bio-line);
  border-radius: var(--radius-lg);
  padding: 36px;
  overflow: hidden;
  transition: transform var(--t-med), box-shadow var(--t-med);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 360px;
  isolation: isolate;
}
.bento__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 30px 60px -30px rgba(15,27,71,0.25);
}
.bento__card .num {
  font-family: var(--font-condensed);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--bio-mute);
  text-transform: uppercase;
}
.bento__card h3 {
  margin: 24px 0 10px;
}
.bento__card p { font-size: 15px; color: var(--bio-steel); }
.bento__card .more {
  font-family: var(--font-display);
  letter-spacing: 0.2em;
  font-size: 13px;
  display: inline-flex;
  gap: 10px;
  color: var(--bio-red);
  margin-top: 18px;
}
.bento__card .more .arrow { transition: transform var(--t-fast); }
.bento__card:hover .more .arrow { transform: translate(4px, -4px); }
.bento__card .deco {
  position: absolute;
  inset: auto -10% -30% auto;
  width: 60%;
  opacity: 0.55;
  z-index: -1;
  transition: transform var(--t-slow);
}
.bento__card:hover .deco { transform: rotate(-8deg) scale(1.06); }

.bento .b-1 { grid-column: span 7; min-height: 460px; background: var(--bio-navy-ink); color: var(--bio-paper); }
.bento .b-1 h3 { color: var(--bio-paper); font-size: clamp(29px, 3.7vw, 51px); }
.bento .b-1 p  { color: rgba(244,241,234,0.7); }
.bento .b-1 .num { color: rgba(244,241,234,0.5); }
.bento .b-1 .more { color: var(--bio-red); }

.bento .b-2 { grid-column: span 5; background: var(--bio-red); color: var(--bio-paper); }
.bento .b-2 h3 { color: var(--bio-paper); }
.bento .b-2 p  { color: rgba(255,255,255,0.85); }
.bento .b-2 .num { color: rgba(255,255,255,0.65); }
.bento .b-2 .more { color: var(--bio-paper); }

.bento .b-3 { grid-column: span 5; }
.bento .b-4 { grid-column: span 7; background: var(--bio-paper-2); }

/* ---------- Stats strip ------------------------------------------------ */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--bio-line);
  border-bottom: 1px solid var(--bio-line);
}
.stats__cell {
  padding: 40px 24px;
  border-right: 1px solid var(--bio-line);
  display: grid;
  gap: 8px;
}
.stats__cell:last-child { border-right: 0; }
.stats__cell .num {
  font-family: var(--font-display);
  font-size: clamp(48px, 6vw, 88px);
  line-height: 1;
  color: var(--bio-red);
  letter-spacing: -0.01em;
}
.stats__cell .lbl {
  font-size: 13px;
  color: var(--bio-mute);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

/* ---------- Service rows (zig-zag) ------------------------------------- */
.zigzag {
  display: grid;
  gap: clamp(56px, 8vw, 120px);
}
.zigzag__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.zigzag__row:nth-child(even) .zigzag__media { order: -1; }
.zigzag__media {
  aspect-ratio: 4/5;
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  background: var(--bio-paper-2);
  box-shadow: 0 30px 60px -30px rgba(15,27,71,0.25);
}
.zigzag__media img,
.zigzag__video {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 1.6s var(--ease);
}
.zigzag__video {
  display: block;
  background: var(--bio-navy-ink);
}
.zigzag__row:hover .zigzag__media img,
.zigzag__row:hover .zigzag__video { transform: scale(1.04); }
.zigzag__media::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(10,20,56,0.45) 100%);
}
.zigzag__media .tag {
  position: absolute;
  top: 18px; left: 18px;
  z-index: 2;
  background: rgba(244,241,234,0.92);
  color: var(--bio-navy);
  font-family: var(--font-display);
  letter-spacing: 0.18em;
  font-size: 12px;
  padding: 8px 12px;
  border-radius: 999px;
}
.zigzag__content h3 { font-size: clamp(26px, 3.4vw, 45px); margin-bottom: 18px; }
.zigzag__content p { margin-bottom: 22px; }
.zigzag__content ul {
  list-style: none; padding: 0;
  display: grid; gap: 10px;
  font-size: 15px;
}
.zigzag__content li {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 10px;
  padding: 12px 0;
  border-top: 1px solid var(--bio-line);
}
.zigzag__content li::before {
  content: "";
  width: 8px; height: 8px;
  margin-top: 8px;
  background: var(--bio-red);
  border-radius: 50%;
  display: inline-block;
}
.zigzag__content li:last-child { border-bottom: 1px solid var(--bio-line); }

/* ---------- Service video ---------------------------------------------- */
.service-video-section {
  background: var(--bio-paper);
}
.service-video {
  display: grid;
  grid-template-columns: minmax(240px, 0.46fr) minmax(0, 1fr);
  gap: clamp(24px, 4vw, 56px);
  align-items: center;
}
.service-video__copy h2 {
  font-size: clamp(34px, 5vw, 70px);
  line-height: 0.95;
  margin-top: 18px;
}
.service-video__copy p {
  margin-top: 20px;
  max-width: 420px;
}
.service-video__player {
  width: 100%;
  aspect-ratio: 16 / 9;
  display: block;
  border: 1px solid rgba(15,27,71,0.12);
  border-radius: var(--radius-lg);
  background: var(--bio-navy-ink);
  box-shadow: 0 30px 60px -30px rgba(15,27,71,0.3);
}

/* ---------- Sticky scroll capabilities (page-internal) ----------------- */
.sticky-stage {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
}
.sticky-stage__nav {
  position: sticky;
  top: 100px;
  align-self: start;
}
.sticky-stage__nav h2 { margin-bottom: 24px; }

/* ---------- Page heads (inner pages) ----------------------------------- */
.pagehead {
  position: relative;
  background: var(--bio-navy-ink);
  color: var(--bio-paper);
  padding: 180px 0 120px;
  overflow: hidden;
}
.pagehead .crumbs {
  font-family: var(--font-display);
  letter-spacing: 0.22em;
  font-size: 12px;
  color: var(--bio-red);
  margin-bottom: 24px;
  display: inline-flex; align-items: center; gap: 8px;
}
.pagehead .crumbs a, .pagehead .crumbs span { color: rgba(244,241,234,0.6); }
.pagehead .crumbs a:hover { color: var(--bio-paper); }
.pagehead h1 {
  font-size: clamp(48px, 7.2vw, 115px);
  color: var(--bio-paper);
  letter-spacing: -0.015em;
  max-width: 14ch;
}
.pagehead p.lead { color: rgba(244,241,234,0.75); margin-top: 20px; max-width: 60ch; }
.pagehead .arc-stage svg path { stroke: rgba(244,241,234,0.18); }

.pagehead__meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 80px;
  border-top: 1px solid rgba(244,241,234,0.12);
}
.pagehead__meta .cell {
  padding: 22px 24px;
  border-right: 1px solid rgba(244,241,234,0.12);
}
.pagehead__meta .cell:first-child { padding-left: 0; }
.pagehead__meta .cell:last-child { padding-right: 0; }
.pagehead__meta .cell:last-child { border-right: 0; }
.pagehead__meta .k {
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(244,241,234,0.5);
}
.pagehead__meta .v {
  font-family: var(--font-display);
  font-size: clamp(19px, 2.1vw, 29px);
  margin-top: 6px;
  color: var(--bio-paper);
}

/* ---------- Case study card ------------------------------------------- */
.cases {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.case {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bio-navy-ink);
  color: var(--bio-paper);
  min-height: 420px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 32px;
  isolation: isolate;
}
.case img {
  position: absolute; inset: 0; z-index: -1;
  width: 100%; height: 100%; object-fit: cover;
  opacity: 0.55;
  transition: transform 1.4s var(--ease), opacity var(--t-med);
}
.case::after {
  content: "";
  position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(180deg, rgba(10,20,56,0.05) 0%, rgba(10,20,56,0.85) 75%);
}
.case:hover img { transform: scale(1.05); opacity: 0.7; }
.case .client {
  font-family: var(--font-display);
  letter-spacing: 0.22em;
  font-size: 12px;
  color: var(--bio-red);
  margin-bottom: 12px;
}
.case h4 {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.9vw, 35px);
  color: var(--bio-paper);
  margin-bottom: 10px;
  letter-spacing: -0.005em;
}
.case p { color: rgba(244,241,234,0.75); font-size: 14px; max-width: 50ch; }

/* ---------- Quote / CTA ban ------------------------------------------- */
.cta-band {
  background: var(--bio-red);
  color: var(--bio-paper);
  border-radius: var(--radius-lg);
  padding: clamp(48px, 6vw, 88px);
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.cta-band::after {
  content: "";
  position: absolute;
  inset: auto -20% -60% auto;
  width: 70%;
  aspect-ratio: 1/1;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.18);
  box-shadow:
    inset 0 0 0 80px rgba(255,255,255,0.04),
    inset 0 0 0 160px rgba(255,255,255,0.02);
}
.cta-band h2 { color: var(--bio-paper); font-size: clamp(32px, 4vw, 64px); }
.cta-band p { color: rgba(255,255,255,0.85); font-size: 17px; }
.cta-band .btn--invert:hover { background: #fff; }

/* ---------- Logos cloud ----------------------------------------------- */
.logos {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1px;
  background: var(--bio-line);
  border: 1px solid var(--bio-line);
}
.logos__cell {
  background: var(--bio-paper);
  aspect-ratio: 2/1;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: 0.08em;
  color: var(--bio-navy);
  transition: background var(--t-fast), color var(--t-fast);
}
.logos__cell:hover { background: var(--bio-navy-ink); color: var(--bio-paper); }

.client-wall {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
}
.client-logo-card {
  min-height: 138px;
  padding: 18px 14px 14px;
  border: 1px solid var(--bio-line);
  border-radius: var(--radius-md);
  background: var(--bio-white);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  text-align: center;
  gap: 10px;
  transition: transform var(--t-fast), box-shadow var(--t-fast), border-color var(--t-fast);
}
.client-logo-card:hover {
  transform: translateY(-2px);
  border-color: rgba(204,38,27,0.28);
  box-shadow: 0 20px 45px -34px rgba(15,27,71,0.3);
}
.client-logo-card__mark {
  width: 86px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.client-logo-card__mark img {
  max-width: 86px;
  max-height: 42px;
  width: auto;
  height: auto;
  display: block;
  object-fit: contain;
}
.client-logo-card__mark--text {
  font-family: var(--font-display);
  font-size: 24px;
  letter-spacing: 0.04em;
  color: var(--bio-navy-ink);
}
.client-logo-card__name {
  min-height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 15px;
  line-height: 1.05;
  color: var(--bio-navy-ink);
}
.client-logo-card__sector {
  font-family: var(--font-condensed);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--bio-mute);
}

.sector-logo-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin-top: 22px;
}
.sector-logo-strip__item {
  min-height: 58px;
  padding: 10px;
  border: 1px solid var(--bio-line);
  border-radius: 6px;
  background: var(--bio-white);
  display: flex;
  align-items: center;
  justify-content: center;
}
.sector-logo-strip__item img {
  max-width: 96px;
  max-height: 34px;
  width: auto;
  height: auto;
  object-fit: contain;
  display: block;
}

/* ---------- Footer ---------------------------------------------------- */
.footer {
  background: var(--bio-navy-ink);
  color: var(--bio-paper);
  padding: 80px 0 32px;
  position: relative;
  overflow: hidden;
}
.footer .arc-stage svg path { stroke: rgba(244,241,234,0.12); }
.footer__top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 60px;
  position: relative;
  z-index: 2;
}
.footer h4 {
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.22em;
  color: var(--bio-red);
  margin-bottom: 18px;
}
.footer ul { list-style: none; padding: 0; display: grid; gap: 8px; }
.footer ul a { color: rgba(244,241,234,0.78); font-size: 14px; transition: color var(--t-fast); }
.footer ul a:hover { color: var(--bio-paper); }
.footer__brand .nav__brand strong { color: var(--bio-paper); }
.footer__brand p { color: rgba(244,241,234,0.7); margin-top: 14px; font-size: 14px; max-width: 36ch; }
.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  padding-top: 24px;
  border-top: 1px solid rgba(244,241,234,0.12);
  color: rgba(244,241,234,0.55);
  font-size: 12px;
  letter-spacing: 0.08em;
  position: relative; z-index: 2;
}
.footer__bottom .qc {
  color: rgba(244,241,234,0.75);
  border-bottom: 1px solid rgba(244,241,234,0.25);
  padding-bottom: 1px;
  transition: color var(--t-fast), border-color var(--t-fast);
}
.footer__bottom .qc:hover { color: var(--bio-red); border-color: var(--bio-red); }

/* Giant footer wordmark */
.footer__wordmark {
  font-family: var(--font-display);
  font-size: clamp(96px, 18vw, 280px);
  line-height: 0.85;
  letter-spacing: -0.04em;
  color: rgba(244,241,234,0.06);
  text-align: center;
  margin: 0 auto 40px;
  user-select: none;
}

/* ---------- Forms ----------------------------------------------------- */
.form {
  display: grid;
  gap: 16px;
  max-width: 520px;
}
.form .field { display: grid; gap: 6px; }
.form label {
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--bio-mute);
}
.form input, .form textarea, .form select {
  background: var(--bio-paper);
  border: 1px solid var(--bio-line);
  border-radius: 12px;
  padding: 14px 16px;
  outline: 0;
  transition: border-color var(--t-fast), background var(--t-fast);
}
.form input:focus, .form textarea:focus, .form select:focus {
  border-color: var(--bio-red);
  background: var(--bio-white);
}
.form textarea { min-height: 140px; resize: vertical; }

/* ---------- Reveal animations ----------------------------------------- */
.reveal {
  transition: opacity 900ms var(--ease), transform 900ms var(--ease);
}
.js-on .reveal:not(.in) {
  opacity: 0;
  transform: translateY(28px);
}
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal[data-delay="1"] { transition-delay: 80ms; }
.reveal[data-delay="2"] { transition-delay: 160ms; }
.reveal[data-delay="3"] { transition-delay: 240ms; }
.reveal[data-delay="4"] { transition-delay: 320ms; }
.reveal[data-delay="5"] { transition-delay: 400ms; }

/* ---------- Responsive ------------------------------------------------- */
/* Tablet landscape & below: tighten hero + arcs */
@media (max-width: 1366px) {
  .hero { padding: 120px 0 50px; min-height: auto; }
  .hero__title { font-size: clamp(40px, 5.6vw, 88px) !important; line-height: 0.95; }
  .hero__logo { height: clamp(28px, 2.4vw, 36px) !important; max-width: 220px; margin-bottom: 16px; }
  .hero__sub { font-size: 15px; }
  .hero__signal { width: clamp(110px, 14vw, 170px); right: 4vw; top: 18%; opacity: 0.85; }
  .hero__metric .num { font-size: clamp(30px, 3.4vw, 48px); }
  .hero .arc-stage svg.arc-big { top: -2%; right: -4%; width: 80vw; max-width: 900px; }
  .hero .arc-stage svg.arc-red { bottom: -18%; left: -10%; width: 70vw; max-width: 700px; }
  .nav__logo { height: 26px; }
  .nav__list a, .nav__list button { font-size: 13px; padding: 7px 12px; }
}

@media (max-width: 1024px) {
  .nav__list { display: none; }
  .nav__burger {
    display: inline-flex;
    width: 40px; height: 40px;
    border-radius: 999px;
    background: rgba(15,27,71,0.06);
    align-items: center; justify-content: center;
  }
  .nav__burger span {
    width: 16px; height: 1.6px; background: currentColor;
    position: relative;
  }
  .nav__burger span::before, .nav__burger span::after {
    content: ""; position: absolute; left: 0; width: 16px; height: 1.6px;
    background: currentColor;
  }
  .nav__burger span::before { top: -6px; }
  .nav__burger span::after  { top: 6px; }

  .megamenu { display: none; }
  .mobile-drawer {
    display: block;
    position: fixed;
    inset: 0;
    background: var(--bio-paper);
    z-index: 90;
    padding: 100px 24px 40px;
    transform: translateY(-100%);
    transition: transform var(--t-med);
    overflow-y: auto;
  }
  .mobile-drawer.is-open { transform: translateY(0); }
  .mobile-drawer h5 { font-family: var(--font-display); letter-spacing: 0.22em; color: var(--bio-red); font-size: 12px; margin: 28px 0 10px; }
  .mobile-drawer a { display: block; padding: 14px 0; border-bottom: 1px solid var(--bio-line); font-family: var(--font-display); font-size: 24px; letter-spacing: 0.02em; }
}
@media (max-width: 980px) {
  .hero { padding: 120px 0 40px; min-height: auto; }
  .hero__grid { grid-template-columns: 1fr; gap: 28px; }
  .hero__title { font-size: clamp(44px, 9.2vw, 110px); }
  .hero__logo { height: clamp(30px, 6vw, 48px); margin-bottom: 18px; }
  .hero__aside { grid-template-columns: repeat(3, 1fr); display: grid; gap: 0; border-top: 1px solid var(--bio-line); padding-top: 18px; }
  .hero__metric { border-top: 0; border-right: 1px solid var(--bio-line); padding: 14px 12px; }
  .hero__metric:last-child { border-right: 0; }
  .hero__metric .num { font-size: clamp(28px, 5vw, 40px); }
  .hero__metric .lbl { font-size: 10px; }
  .hero__signal { right: 4vw; top: 14%; width: clamp(100px, 22vw, 180px); opacity: 0.7; }
  .hero .arc-stage svg.arc-big { top: -5%; right: -25%; width: 130vw; }
  .hero .arc-stage svg.arc-red { bottom: -40%; left: -20%; width: 100vw; }

  .bento { grid-template-columns: 1fr; }
  .bento .b-1, .bento .b-2, .bento .b-3, .bento .b-4 { grid-column: 1 / -1; }
  .bento .b-1 { order: 1; }
  .bento .b-2 { order: 2; }
  .bento .b-4 { order: 3; }
  .bento .b-3 { order: 4; }
  .bento .b-4.reveal[data-delay="3"] { transition-delay: 160ms; }
  .bento .b-3.reveal[data-delay="2"] { transition-delay: 240ms; }
  .section .wrap > [style*="grid-template-columns:0.9fr 1.1fr"] {
    grid-template-columns: 1fr !important;
    gap: 30px !important;
  }
  .section .wrap > [style*="grid-template-columns:0.9fr 1.1fr"] .section-title {
    max-width: 12ch;
  }
  .section .wrap > [style*="grid-template-columns:0.9fr 1.1fr"] .lead {
    max-width: 44ch;
  }

  .stats { grid-template-columns: 1fr 1fr; }
  .stats__cell:nth-child(2) { border-right: 0; }
  .stats__cell:nth-child(1), .stats__cell:nth-child(2) { border-bottom: 1px solid var(--bio-line); }

  .zigzag__row { grid-template-columns: 1fr; gap: 28px; }
  .zigzag__row:nth-child(even) .zigzag__media { order: 0; }
  .service-video { grid-template-columns: 1fr; }
  .about-brief {
    grid-template-columns: 1fr;
    gap: 30px;
    align-items: start;
  }

  .sticky-stage { grid-template-columns: 1fr; }
  .sticky-stage__nav { position: static; }

  .features {
    grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
  }
  .features > * {
    min-width: 0;
  }

  .cases { grid-template-columns: 1fr; }
  .cta-band { grid-template-columns: 1fr; padding: 40px; }
  .footer__top { grid-template-columns: 1fr 1fr; }
  .logos { grid-template-columns: repeat(3, 1fr); }
  .client-wall { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .sector-logo-strip { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .pagehead { padding: 140px 0 80px; }
  .pagehead__meta { grid-template-columns: 1fr; }
  .pagehead__meta .cell {
    border-right: 0;
    border-bottom: 1px solid rgba(244,241,234,0.12);
    padding: 22px 0;
  }
}

/* Phone */
@media (max-width: 640px) {
  .nav { inset: 10px 10px auto 10px; padding: 10px 12px 10px 16px; }
  .hero { padding: 110px 0 32px; }
  .hero__title { font-size: clamp(40px, 11.5vw, 78px); line-height: 0.95; }
  .hero__logo { display: none; }
  .hero__sub { font-size: 15px; margin: 16px 0 22px; }
  .hero__ctas { flex-direction: column; align-items: stretch; }
  .hero__ctas .btn { justify-content: center; }
  .hero__aside { grid-template-columns: 1fr; }
  .hero__metric { border-right: 0; border-bottom: 1px solid var(--bio-line); padding: 14px 0; }
  .hero__metric:last-child { border-bottom: 0; }
  .hero__signal {
    display: block;
    right: 6vw;
    top: 16%;
    width: clamp(120px, 36vw, 170px);
    opacity: 0.62;
    z-index: 1;
  }
  .hero .arc-stage svg.arc-big { top: -24%; right: -34%; width: 130vw; }
  .hero .arc-stage svg.arc-red { bottom: -34%; left: -42%; width: 120vw; }
  .bento__card h3,
  .bento .b-1 h3 {
    font-size: clamp(30px, 9vw, 42px);
    line-height: 0.95;
  }
  .about-brief {
    gap: 22px;
  }
  .about-brief .section-title {
    font-size: clamp(42px, 13vw, 58px);
    line-height: 0.95;
    max-width: 100%;
  }
  .about-brief .lead {
    font-size: 22px;
    line-height: 1.42;
    max-width: 100%;
  }
  .about-brief__offices {
    grid-template-columns: 1fr;
    gap: 18px;
    margin-top: 28px;
    padding-top: 20px;
  }
  .about-brief__office-address {
    font-size: 20px;
    line-height: 1.35;
  }
  .stats { grid-template-columns: 1fr; }
  .stats__cell { border-right: 0; border-bottom: 1px solid var(--bio-line); padding: 26px 16px; }
  .stats__cell:last-child { border-bottom: 0; }
  .logos { grid-template-columns: repeat(2, 1fr); }
  .client-wall { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .client-logo-card { min-height: 126px; padding: 16px 10px 12px; }
  .client-logo-card__name { font-size: 14px; }
  .sector-logo-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .sector-logo-strip__item { min-height: 54px; padding: 8px; }
  .sector-logo-strip__item img { max-width: 86px; max-height: 30px; }
  .section .wrap > [style*="grid-template-columns:0.9fr 1.1fr"] {
    gap: 24px !important;
  }
  .section .wrap > [style*="grid-template-columns:0.9fr 1.1fr"] .section-title {
    font-size: clamp(42px, 13vw, 58px);
    line-height: 0.96;
    max-width: 9ch;
  }
  .section .wrap > [style*="grid-template-columns:0.9fr 1.1fr"] .lead {
    font-size: 20px;
    line-height: 1.45;
    max-width: 100%;
  }
  .section .wrap > [style*="grid-template-columns:0.9fr 1.1fr"] p:not(.lead) {
    font-size: 15px;
    line-height: 1.7;
    max-width: 100%;
  }
  .section .wrap > [style*="grid-template-columns:1fr 1fr"] {
    grid-template-columns: 1fr !important;
    gap: 18px !important;
  }
  .section .wrap > [style*="grid-template-columns:1fr 1fr"] > [style*="border-radius:var(--radius-lg)"] {
    padding: 24px !important;
    border-radius: var(--radius-md) !important;
  }
  .section .wrap > [style*="grid-template-columns:1fr 1fr"] h3 {
    font-size: clamp(28px, 8.5vw, 38px);
    line-height: 0.98;
  }
  .section .wrap > [style*="grid-template-columns:1fr 1fr"] p {
    font-size: 16px !important;
    line-height: 1.75 !important;
    max-width: 100%;
  }
  .features {
    grid-template-columns: 1fr !important;
    gap: 14px !important;
  }
  .features > * {
    padding: 22px !important;
    min-height: auto !important;
    border-radius: var(--radius-md) !important;
  }
  .features h4 {
    font-size: 26px !important;
    line-height: 0.98 !important;
    max-width: 12ch;
  }
  .features p {
    font-size: 16px !important;
    line-height: 1.55 !important;
    max-width: 28ch;
  }
  .footer__top { grid-template-columns: 1fr; gap: 24px; }
  .footer__bottom { font-size: 11px; }
  .pagehead h1 { font-size: clamp(40px, 11vw, 80px); }
  .cta-band { padding: 32px; }
}

/* Reduce motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}