/* SymbioCI SEA · Design System · v3.0 · Mobile-first */

:root {
  --vermillion: #E85A2C;
  --emerald:    #18A878;
  --citrine:    #C9C236;

  --ink-000: #FBFAF6; --ink-100: #E6EAE8; --ink-200: #D3D9D6;
  --ink-300: #B3BCB8; --ink-400: #8C9893; --ink-500: #677571;
  --ink-600: #45574F; --ink-700: #2A3D38; --ink-900: #0E1A17;

  --paper-000: #FBFAF6; --paper-050: #F5F2EA;
  --paper-100: #EDE8DA; --paper-200: #DDD6C2; --paper-300: #B8AE92;

  --font-serif: 'IBM Plex Serif', Georgia, serif;
  --font-sans:  'IBM Plex Sans', system-ui, sans-serif;
  --font-mono:  'IBM Plex Mono', 'Courier New', monospace;

  /* Mobile-first type scale */
  --fs-d1:      clamp(1.875rem, 7vw, 4rem);
  --fs-d2:      clamp(1.625rem, 5.5vw, 3rem);
  --fs-h1:      clamp(1.375rem, 4.5vw, 2.25rem);
  --fs-h2:      clamp(1.25rem,  3.5vw, 1.75rem);
  --fs-h3:      clamp(1.0625rem,2.5vw, 1.25rem);
  --fs-body:    1rem;
  --fs-small:   0.875rem;
  --fs-eyebrow: 0.6875rem;

  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px;
  --sp-5:24px; --sp-6:32px; --sp-7:48px; --sp-8:64px;

  --r-xs:2px; --r-sm:6px; --r-md:10px; --r-lg:16px; --r-pill:999px;

  --shadow-xs: 0 0 0 1px rgba(14,26,23,.08);
  --shadow-sm: 0 1px 4px rgba(14,26,23,.06), 0 0 0 1px rgba(14,26,23,.06);
  --shadow-md: 0 4px 14px rgba(14,26,23,.10), 0 0 0 1px rgba(14,26,23,.06);
  --shadow-lg: 0 12px 32px rgba(14,26,23,.16), 0 0 0 1px rgba(14,26,23,.08);

  --ease-std: cubic-bezier(0.2,0,0,1);
  --ease-emp: cubic-bezier(0.3,0,0,1.1);
  --dur-fast: 120ms; --dur-base: 200ms; --dur-slow: 360ms;

  --max-w:  1160px;
  --nav-h:  60px;
  --gutter: clamp(1.125rem, 5vw, 3rem);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-font-smoothing: antialiased; text-size-adjust: 100%; }
body { font-family: var(--font-sans); background: var(--paper-000); color: var(--ink-900); line-height: 1.6; overflow-x: hidden; }
img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }

/* ── Typography ── */
h1,h2,h3,h4 { font-family: var(--font-serif); font-weight: 400; line-height: 1.2; letter-spacing: -.015em; }
.display-1 { font-size: var(--fs-d1); line-height: 1.08; letter-spacing: -.025em; }
.display-2 { font-size: var(--fs-d2); line-height: 1.12; letter-spacing: -.02em; }
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }

.hw { font-style: italic; color: var(--vermillion); }
.binomial { font-style: italic; }
.mono { font-family: var(--font-mono); font-feature-settings: 'tnum' 1; }

p { font-size: var(--fs-body); line-height: 1.7; }
.lead { font-size: clamp(1rem, 2.5vw, 1.125rem); line-height: 1.75; color: var(--ink-600); }

.eyebrow {
  display: block;
  font-family: var(--font-sans); font-size: var(--fs-eyebrow); font-weight: 600;
  letter-spacing: .12em; text-transform: uppercase; line-height: 1;
  color: var(--emerald);
}
.section--dark .eyebrow, .page-hero .eyebrow, .hero .eyebrow { color: var(--citrine); }

/* ── Layout ── */
.container { max-width: var(--max-w); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: clamp(3rem, 8vw, 6rem); }
.section--dark { background: var(--ink-900); color: var(--paper-000); }
.section--dark p, .section--dark .lead { color: var(--ink-300); }
.section--dark h2, .section--dark h3 { color: var(--paper-000); }
.section--paper { background: var(--paper-050); }

/* ── Responsive grid utilities ── */
/* Default: 1 column. Expands at breakpoints. */
.two-col {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 6vw, 4rem);
}
@media (min-width: 900px) {
  .two-col { grid-template-columns: 1fr 1fr; align-items: start; }
  .two-col.align-center { align-items: center; }
}

.three-col {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-5);
}
@media (min-width: 600px) {
  .three-col { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 960px) {
  .three-col { grid-template-columns: repeat(3, 1fr); }
}

.four-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-4);
}
@media (min-width: 900px) {
  .four-col { grid-template-columns: repeat(4, 1fr); }
}

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--sp-2);
  font-family: var(--font-sans); font-size: .9rem; font-weight: 600;
  line-height: 1; padding: .8rem 1.375rem; min-height: 44px;
  border-radius: var(--r-sm); border: 1.5px solid transparent;
  white-space: nowrap; text-align: center;
  transition: background var(--dur-fast) var(--ease-std),
              border-color var(--dur-fast) var(--ease-std),
              color var(--dur-fast) var(--ease-std),
              transform var(--dur-fast) var(--ease-std);
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--vermillion); border-color: var(--vermillion); color: #fff; }
.btn--primary:hover { background: #cf4f24; border-color: #cf4f24; }
.btn--outline { background: transparent; border-color: var(--ink-900); color: var(--ink-900); }
.btn--outline:hover { background: var(--ink-900); color: var(--paper-000); }
.btn--outline-light { background: transparent; border-color: rgba(251,250,246,.35); color: var(--paper-000); }
.btn--outline-light:hover { border-color: var(--paper-000); background: rgba(251,250,246,.08); }
.btn-group { display: flex; gap: var(--sp-3); flex-wrap: wrap; align-items: center; }

/* ── Navigation ── */
.nav {
  position: sticky; top: 0; height: var(--nav-h); z-index: 100;
  background: var(--ink-900); border-bottom: 1px solid rgba(255,255,255,.07);
}
.nav__inner {
  max-width: var(--max-w); margin-inline: auto; padding-inline: var(--gutter);
  height: 100%; display: flex; align-items: center;
  justify-content: space-between; gap: var(--sp-5);
}
.nav__brand { display: flex; align-items: center; gap: var(--sp-3); flex-shrink: 0; min-height: 44px; isolation: isolate; }
.nav__logo-mark { height: 28px; width: auto; mix-blend-mode: screen; display: block; }
.nav__logo-long  { height: 30px; width: auto; mix-blend-mode: screen; display: block; }
.nav__brand-divider { width: 1px; height: 22px; background: rgba(255,255,255,.15); flex-shrink: 0; }
.nav__wordmark {
  font-family: var(--font-serif); font-weight: 500; font-size: 1rem;
  color: var(--paper-000); display: flex; align-items: baseline; gap: 5px;
}
.nav__wordmark-sea { font-family: var(--font-sans); font-size: .6rem; font-weight: 600; letter-spacing: .1em; color: var(--ink-400); }
.nav__links { display: none; align-items: center; gap: var(--sp-6); }
.nav__link { font-size: .875rem; color: var(--ink-400); transition: color var(--dur-fast) var(--ease-std); min-height: 44px; display: flex; align-items: center; }
.nav__link:hover { color: var(--paper-000); }
.nav__link.is-active { color: var(--paper-000); font-weight: 500; }
@media (min-width: 860px) {
  .nav__links { display: flex; }
  .nav__hamburger { display: none !important; }
}

.nav__hamburger {
  display: flex; flex-direction: column; justify-content: center;
  gap: 5px; padding: var(--sp-2); min-height: 44px; min-width: 44px; align-items: center;
}
.nav__hamburger span {
  display: block; width: 22px; height: 1.5px; background: var(--paper-000);
  transition: transform var(--dur-base) var(--ease-std), opacity var(--dur-base) var(--ease-std);
}
.nav__mobile {
  display: flex; flex-direction: column;
  position: fixed; top: var(--nav-h); left: 0; right: 0; bottom: 0;
  background: var(--ink-900); padding: var(--sp-6) var(--gutter);
  gap: 0; border-top: 1px solid rgba(255,255,255,.07); z-index: 99;
  transform: translateX(100%); opacity: 0; pointer-events: none;
  transition: transform var(--dur-slow) var(--ease-std), opacity var(--dur-slow) var(--ease-std);
  overflow-y: auto;
}
.nav__mobile.is-open { transform: translateX(0); opacity: 1; pointer-events: auto; }
.nav__mobile-link {
  font-size: 1.125rem; font-weight: 500; color: var(--ink-300);
  padding-block: var(--sp-4); border-bottom: 1px solid rgba(255,255,255,.07);
  transition: color var(--dur-fast) var(--ease-std); min-height: 56px;
  display: flex; align-items: center;
}
.nav__mobile-link:last-of-type { border-bottom: none; }
.nav__mobile-link:hover, .nav__mobile-link:active { color: var(--paper-000); }
.nav__mobile .btn { margin-top: var(--sp-5); width: 100%; }

/* ── Hero ── */
.hero {
  background: var(--ink-900);
  padding-block: clamp(3.5rem, 9vw, 7rem);
  position: relative; overflow: hidden;
}
.hero__arcs { position: absolute; bottom: -12%; right: -6%; width: min(60%, 420px); aspect-ratio: 1; pointer-events: none; }
.hero__content { position: relative; z-index: 2; }
.hero h1 { color: var(--paper-000); margin-block: var(--sp-5); }
.hero .lead { color: var(--ink-300); margin-bottom: var(--sp-6); }
.hero .eyebrow { margin-bottom: var(--sp-4); }

/* ── Page hero ── */
.page-hero {
  background: var(--ink-900);
  padding-block: clamp(3rem, 7vw, 5.5rem);
  position: relative; overflow: hidden;
}
.page-hero__arcs { position: absolute; bottom: -20%; right: -5%; width: min(42%, 300px); aspect-ratio: 1; pointer-events: none; }
.page-hero__inner { position: relative; z-index: 2; }
.page-hero .eyebrow { margin-bottom: var(--sp-4); }
.page-hero h1 { color: var(--paper-000); margin-bottom: var(--sp-4); }
.page-hero .lead { color: var(--ink-300); }

/* ── Stat cards ── */
.stat-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-4);
}
@media (min-width: 600px) { .stat-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .stat-grid { grid-template-columns: repeat(3, 1fr); } }

.stat-card {
  background: var(--ink-700); border-radius: var(--r-md);
  padding: var(--sp-5); border: 1px solid rgba(255,255,255,.07);
  position: relative; overflow: hidden;
}
.stat-card::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse 80% 80% at 100% 0%, rgba(24,168,120,.1) 0%, transparent 60%);
  pointer-events: none;
}
.stat-card__num {
  font-family: var(--font-mono); font-feature-settings: 'tnum' 1;
  font-size: clamp(2rem, 5vw, 2.75rem); color: var(--paper-000);
  line-height: 1; margin-bottom: var(--sp-3); position: relative;
}
.stat-card__label { font-size: var(--fs-small); color: var(--ink-300); line-height: 1.6; margin-bottom: var(--sp-3); }
.stat-card__source { font-family: var(--font-mono); font-size: .6875rem; color: var(--ink-500); }

/* ── Strategy cards ── */
.strategy-grid {
  display: grid; grid-template-columns: 1fr; gap: var(--sp-5);
}
@media (min-width: 860px) { .strategy-grid { grid-template-columns: repeat(2, 1fr); } }

.strategy-card {
  background: #fff; border-radius: var(--r-md);
  border: 1px solid var(--ink-100); padding: var(--sp-5);
  box-shadow: var(--shadow-sm);
}
.strategy-card__tag {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  background: #E4F4ED; color: var(--emerald);
  font-size: .75rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase;
  padding: var(--sp-1) var(--sp-3); border-radius: var(--r-pill); margin-bottom: var(--sp-4);
}
.strategy-card h3 { margin-bottom: var(--sp-3); }
.strategy-card > p { font-size: .9375rem; color: var(--ink-600); line-height: 1.7; margin-bottom: var(--sp-4); }
.strategy-card__detail { border-top: 1px solid var(--ink-100); padding-top: var(--sp-4); margin-top: var(--sp-2); }
.strategy-card__detail li {
  font-size: var(--fs-small); color: var(--ink-600);
  position: relative; padding-left: 1.25em;
  line-height: 1.6; margin-bottom: var(--sp-3);
}
.strategy-card__detail li::before { content: '→'; color: var(--emerald); position: absolute; left: 0; top: 0; }

/* ── Capability list ── */
.cap-list {
  display: grid; grid-template-columns: 1fr; gap: var(--sp-4);
}
@media (min-width: 760px) { .cap-list { grid-template-columns: repeat(2, 1fr); } }

.cap-item-row {
  display: flex; gap: var(--sp-4); align-items: flex-start;
  padding: var(--sp-5); background: #fff;
  border-radius: var(--r-md); border: 1px solid var(--ink-100);
  box-shadow: var(--shadow-sm);
}
.cap-item-row__icon { color: var(--emerald); flex-shrink: 0; margin-top: 2px; }
.cap-item-row__icon svg { width: 20px; height: 20px; stroke-width: 1.6; }
.cap-item-row h4 { font-family: var(--font-sans); font-size: .9375rem; font-weight: 600; color: var(--ink-900); margin-bottom: var(--sp-2); }
.cap-item-row p { font-size: var(--fs-small); color: var(--ink-600); line-height: 1.65; margin: 0; }

/* ── Dark diff block ── */
.diff-block {
  background: var(--ink-900); border-radius: var(--r-lg);
  padding: clamp(1.75rem, 5vw, 3.5rem);
  position: relative; overflow: hidden;
}
.diff-block__arcs { position: absolute; bottom: -10%; right: -5%; width: min(50%, 280px); aspect-ratio: 1; pointer-events: none; }
.diff-block__inner { position: relative; z-index: 1; }
.diff-block .eyebrow { margin-bottom: var(--sp-4); }
.diff-block h2 { color: var(--paper-000); margin-bottom: var(--sp-4); }
.diff-block__lead { color: var(--ink-300); margin-bottom: var(--sp-6); }
.diff-block__points {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: var(--sp-5);
  border-top: 1px solid rgba(255,255,255,.09);
  padding-top: var(--sp-5);
}
@media (min-width: 700px) { .diff-block__points { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1040px) { .diff-block__points { grid-template-columns: repeat(5, 1fr); } }
.footer__links a svg { transition: opacity var(--dur-fast) var(--ease-std); }
.footer__links a:hover svg { opacity: 1; }
.diff-point__label { font-size: var(--fs-eyebrow); font-weight: 600; letter-spacing: .10em; text-transform: uppercase; color: var(--citrine); margin-bottom: var(--sp-2); }
.diff-point p { font-size: var(--fs-small); color: var(--ink-300); line-height: 1.6; }

/* ── Prof Xi card ── */
.xi-card {
  background: var(--ink-900); border-radius: var(--r-lg);
  padding: clamp(1.75rem, 5vw, 3rem);
  display: grid; grid-template-columns: 1fr;
  gap: var(--sp-6);
  position: relative; overflow: hidden;
}
@media (min-width: 700px) {
  .xi-card { grid-template-columns: 160px 1fr; align-items: start; }
}
.xi-card__glow {
  position: absolute; top: -30%; right: -10%; width: 55%; aspect-ratio: 1;
  background: radial-gradient(ellipse, rgba(24,168,120,.12) 0%, transparent 68%);
  pointer-events: none;
}
.xi-card__photo {
  border-radius: var(--r-md); background: var(--ink-700);
  aspect-ratio: 3/4; display: flex; align-items: center; justify-content: center;
  border: 1px solid rgba(255,255,255,.07);
  overflow: hidden;
  max-width: 200px;
}
.xi-card__photo img { width: 100%; height: 100%; object-fit: cover; object-position: center top; display: block; border-radius: var(--r-md); }
@media (max-width: 699px) { .xi-card__photo { max-width: 160px; aspect-ratio: 1; } }
.xi-card__photo-text { font-family: var(--font-mono); font-size: .6875rem; color: var(--ink-500); text-align: center; line-height: 1.6; padding: var(--sp-4); }
.xi-card__body { position: relative; z-index: 1; }
.xi-card__body .eyebrow { margin-bottom: var(--sp-3); }
.xi-name { font-family: var(--font-serif); font-size: var(--fs-h2); color: var(--paper-000); margin-bottom: var(--sp-2); }
.xi-title { font-family: var(--font-mono); font-size: .8125rem; color: var(--ink-400); line-height: 1.55; margin-bottom: var(--sp-5); }
.xi-card__body p { font-size: .9375rem; color: var(--ink-300); line-height: 1.7; margin-bottom: var(--sp-4); }
.xi-firsts {
  display: flex; flex-wrap: wrap; gap: var(--sp-3); margin-top: var(--sp-4);
}
.xi-first-item {
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.10);
  border-radius: var(--r-sm); padding: var(--sp-2) var(--sp-4);
}
.xi-first-item__label { font-family: var(--font-serif); font-style: italic; font-size: 1rem; color: var(--paper-200); margin-bottom: var(--sp-1); }
.xi-first-item__species { font-size: .8125rem; color: var(--ink-400); line-height: 1.5; }

/* ── Process steps ── */
.process { display: flex; flex-direction: column; }
.process-step { display: grid; grid-template-columns: 40px 1fr; gap: var(--sp-4); padding-bottom: var(--sp-6); }
.process-step:last-child { padding-bottom: 0; }
.process-step__num-col { display: flex; flex-direction: column; align-items: center; }
.process-step__num {
  width: 36px; height: 36px; border-radius: 50%;
  border: 1.5px solid var(--ink-200);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: .8125rem; color: var(--emerald);
  background: var(--paper-000); flex-shrink: 0;
}
.section--dark .process-step__num { border-color: rgba(255,255,255,.15); background: var(--ink-900); color: var(--citrine); }
.process-step__line { flex: 1; width: 1px; background: var(--ink-100); margin-top: var(--sp-2); }
.section--dark .process-step__line { background: rgba(255,255,255,.08); }
.process-step:last-child .process-step__line { display: none; }
.process-step__body { padding-top: .3rem; }
.process-step__body h4 { font-family: var(--font-sans); font-size: .9375rem; font-weight: 600; color: var(--ink-900); margin-bottom: var(--sp-2); }
.section--dark .process-step__body h4 { color: var(--paper-000); }
.process-step__body p { font-size: var(--fs-small); color: var(--ink-600); line-height: 1.65; }
.section--dark .process-step__body p { color: var(--ink-300); }

/* ── Evidence list ── */
.evidence-list { display: flex; flex-direction: column; gap: var(--sp-4); }
.evidence-item {
  background: #fff; border: 1px solid var(--ink-100); border-radius: var(--r-md);
  padding: var(--sp-5); box-shadow: var(--shadow-sm);
  display: grid; grid-template-columns: 1fr;
  gap: var(--sp-4);
}
@media (min-width: 560px) {
  .evidence-item { grid-template-columns: 160px 1fr; align-items: start; }
}
.evidence-item__num { font-family: var(--font-mono); font-feature-settings: 'tnum' 1; font-size: clamp(1.5rem, 4vw, 2.25rem); color: var(--ink-900); line-height: 1.1; margin-bottom: var(--sp-1); overflow-wrap: break-word; word-break: break-word; }
.evidence-item__num-label { font-family: var(--font-mono); font-size: .6875rem; color: var(--ink-500); }
.evidence-item h4 { font-family: var(--font-sans); font-weight: 600; font-size: .9375rem; margin-bottom: var(--sp-2); }
.evidence-item p { font-size: var(--fs-small); color: var(--ink-600); line-height: 1.65; margin-bottom: var(--sp-2); }
.evidence-item__source { font-family: var(--font-mono); font-size: .6875rem; color: var(--ink-500); }

/* ── CTA section ── */
.cta-section {
  background: var(--ink-600);
  text-align: center;
  padding-block: clamp(3.5rem, 8vw, 6rem);
  position: relative; overflow: hidden;
}
.cta-section::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 70% at 50% 50%, rgba(24,168,120,.08) 0%, transparent 70%);
  pointer-events: none;
}
.cta-section__inner { position: relative; z-index: 1; }
.cta-section .eyebrow { margin-bottom: var(--sp-4); }
.cta-section h2 { color: var(--paper-000); margin-bottom: var(--sp-4); max-width: 24ch; margin-inline: auto; }
.cta-section p { color: var(--ink-300); margin: 0 auto var(--sp-6); max-width: 52ch; }
.cta-section .btn-group { justify-content: center; }

/* ── Footer ── */
.footer { background: var(--ink-700); color: var(--ink-300); padding-block: clamp(2.5rem, 6vw, 4rem); border-top: 2px solid rgba(255,255,255,.10); }
.footer__grid { display: grid; grid-template-columns: 1fr; gap: var(--sp-6); }
@media (min-width: 600px) { .footer__grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 960px) { .footer__grid { grid-template-columns: 2fr 1fr 1fr; gap: var(--sp-7); } }
.footer__brand-img { height: 26px; width: auto; mix-blend-mode: screen; margin-bottom: var(--sp-3); }
.footer__tagline { font-size: var(--fs-small); line-height: 1.65; color: var(--ink-400); max-width: 30ch; }
.footer__col-label { display: block; font-size: var(--fs-eyebrow); font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-500); margin-bottom: var(--sp-4); }
.footer__links { display: flex; flex-direction: column; gap: var(--sp-3); }
.footer__links a { font-size: var(--fs-small); color: var(--ink-300); transition: color var(--dur-fast) var(--ease-std); }
.footer__links a:hover { color: var(--paper-000); }
.footer__links span { font-size: var(--fs-small); }
.footer__bottom {
  border-top: 1px solid rgba(255,255,255,.08); margin-top: var(--sp-6); padding-top: var(--sp-5);
  font-size: .8125rem; color: var(--ink-500); text-align: center;
}

/* ── Modal ── */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(14,26,23,.82); z-index: 200;
  display: flex; align-items: flex-end; justify-content: center;
  padding: 0; opacity: 0; visibility: hidden;
  transition: opacity var(--dur-slow) var(--ease-std), visibility var(--dur-slow) var(--ease-std);
}
@media (min-width: 600px) {
  .modal-overlay { align-items: center; padding: var(--sp-5); }
}
.modal-overlay.is-open { opacity: 1; visibility: visible; }
.modal {
  background: var(--paper-000); border-radius: var(--r-lg) var(--r-lg) 0 0;
  box-shadow: var(--shadow-lg); width: 100%;
  max-height: 92vh; overflow-y: auto;
  padding: clamp(1.25rem, 5vw, 2.25rem);
  transform: translateY(24px);
  transition: transform var(--dur-slow) var(--ease-std);
  position: relative;
}
@media (min-width: 600px) {
  .modal { max-width: 500px; border-radius: var(--r-lg); transform: translateY(16px); }
}
.modal-overlay.is-open .modal { transform: translateY(0); }
.modal__close {
  position: absolute; top: var(--sp-4); right: var(--sp-4);
  color: var(--ink-500); padding: var(--sp-2); min-height: 44px; min-width: 44px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; line-height: 1;
  transition: color var(--dur-fast) var(--ease-std);
}
.modal__close:hover { color: var(--ink-900); }
.modal .eyebrow { margin-bottom: var(--sp-3); }
.modal h2 { margin-bottom: var(--sp-5); }

/* ── Forms ── */
.form-group { margin-bottom: var(--sp-4); }
.form-label { display: block; font-size: .8125rem; font-weight: 600; color: var(--ink-600); letter-spacing: .02em; margin-bottom: var(--sp-2); }
.form-input, .form-select, .form-textarea {
  width: 100%; background: #fff; border: 1.5px solid var(--ink-200);
  border-radius: var(--r-xs); padding: .75rem; font-size: 1rem;
  font-family: var(--font-sans); color: var(--ink-900); outline: none;
  -webkit-appearance: none; appearance: none;
  transition: border-color var(--dur-fast) var(--ease-std), box-shadow var(--dur-fast) var(--ease-std);
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--vermillion);
  box-shadow: 0 0 0 3px rgba(232,90,44,.18);
}
.form-textarea { resize: vertical; min-height: 110px; line-height: 1.55; }
.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23677571' fill='none' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right .75rem center; padding-right: 2.25rem; cursor: pointer;
}
.form-btn { width: 100%; margin-top: var(--sp-2); justify-content: center; }
.form-note { font-size: .8125rem; color: var(--ink-500); text-align: center; margin-top: var(--sp-3); }
.hidden { display: none !important; }

/* ── Contact split ── */
.contact-split { display: grid; grid-template-columns: 1fr; }
@media (min-width: 860px) {
  .contact-split { grid-template-columns: 1fr 1fr; min-height: calc(100vh - var(--nav-h)); }
}
.contact-split__info {
  background: var(--ink-900);
  padding: clamp(2.5rem, 7vw, 5rem) var(--gutter);
  position: relative; overflow: hidden;
}
.contact-split__arcs { position: absolute; bottom: -20%; right: -15%; width: 70%; aspect-ratio: 1; pointer-events: none; }
.contact-split__info-inner { position: relative; z-index: 1; }
.contact-split__info h1 { color: var(--paper-000); margin-bottom: var(--sp-4); }
.contact-split__info .lead { color: var(--ink-300); }
.contact-split__form {
  background: var(--paper-050);
  padding: clamp(2.5rem, 7vw, 5rem) var(--gutter);
}
.contact-split__form h2 { margin-bottom: var(--sp-5); }
.contact-split__form-inner { max-width: 440px; }
.contact-info-list { display: flex; flex-direction: column; gap: var(--sp-5); margin-top: var(--sp-6); }
.contact-info-item { display: flex; align-items: flex-start; gap: var(--sp-4); }
.contact-info-item__icon { color: var(--emerald); flex-shrink: 0; margin-top: 2px; }
.contact-info-item__icon svg { width: 20px; height: 20px; stroke-width: 1.6; }
.contact-info-item h4 { font-family: var(--font-sans); font-size: .8125rem; font-weight: 600; color: var(--paper-000); margin-bottom: var(--sp-1); }
.contact-info-item p { font-size: var(--fs-small); color: var(--ink-400); }
.contact-info-item a { color: var(--ink-300); transition: color var(--dur-fast) var(--ease-std); }
.contact-info-item a:hover { color: var(--vermillion); }

/* ── Info cards (about page) ── */
.info-card {
  background: var(--paper-050); border-radius: var(--r-md);
  padding: var(--sp-5); border: 1px solid var(--ink-100);
}
.info-card .eyebrow { margin-bottom: var(--sp-3); }
.info-card__value { font-family: var(--font-serif); font-size: 1.375rem; color: var(--ink-900); margin-bottom: var(--sp-2); line-height: 1.2; }
.info-card p { font-size: var(--fs-small); color: var(--ink-600); margin: 0; }

/* ── Feature cards (3-up) ── */
.feature-card {
  background: #fff; border: 1px solid var(--ink-100); border-radius: var(--r-md);
  padding: var(--sp-5); box-shadow: var(--shadow-sm);
}
.feature-card__icon { color: var(--emerald); margin-bottom: var(--sp-4); }
.feature-card__icon svg { width: 22px; height: 22px; stroke-width: 1.6; }
.feature-card h3 { margin-bottom: var(--sp-3); }
.feature-card p { font-size: var(--fs-small); color: var(--ink-600); line-height: 1.65; }

/* ── Scroll reveal ── */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity var(--dur-slow) var(--ease-std), transform var(--dur-slow) var(--ease-std); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ── Spacing utilities ── */
.mb-3{margin-bottom:var(--sp-3)} .mb-4{margin-bottom:var(--sp-4)}
.mb-5{margin-bottom:var(--sp-5)} .mb-6{margin-bottom:var(--sp-6)}
.mb-7{margin-bottom:var(--sp-7)} .mt-4{margin-top:var(--sp-4)}
.mt-5{margin-top:var(--sp-5)} .mt-6{margin-top:var(--sp-6)}
.mt-7{margin-top:var(--sp-7)} .text-center{text-align:center}

/* ── Section intro ── */
.section-intro { margin-bottom: var(--sp-7); }
.section-intro .eyebrow { margin-bottom: var(--sp-4); }
.section-intro h2 { margin-bottom: var(--sp-4); }
.section-intro .lead { margin-top: var(--sp-4); }

/* ── Brand patterns ── */

/* Life-lattice: emerald dots on paper, used as subtle section bg */
.pattern-lattice {
  background-color: var(--paper-050);
  background-image: radial-gradient(circle at 50% 50%, rgba(24,168,120,0.22) 1px, transparent 1.2px);
  background-size: 22px 22px;
}

/* Production 4-col collapses to 2-col on mobile */
@media (max-width: 720px) {
  .prod-specs { grid-template-columns: repeat(2, 1fr) !important; }
}
@media (max-width: 440px) {
  .prod-specs { grid-template-columns: 1fr !important; }
}

/* ── Beyond public health footer strip ── */
.beyond-strip {
  background: var(--ink-700);
  padding-block: clamp(2rem, 5vw, 3rem);
  position: relative;
  overflow: hidden;
}
.beyond-strip__arcs {
  position: absolute;
  left: -80px;
  top: 50%;
  transform: translateY(-50%);
  width: 320px;
  height: 320px;
  pointer-events: none;
  opacity: .55;
}
.beyond-strip__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-5);
  padding: var(--sp-5) var(--sp-6);
  border: 1px solid rgba(24,168,120,.35);
  border-radius: var(--r-lg);
  background: rgba(24,168,120,.07);
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}
.beyond-strip__eyebrow {
  font-size: var(--fs-eyebrow);
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--emerald);
  margin-bottom: var(--sp-1);
}
.beyond-strip__title {
  font-size: 1rem;
  font-weight: 500;
  color: var(--paper-000);
  margin-bottom: var(--sp-1);
}
.beyond-strip__desc {
  font-size: var(--fs-small);
  color: var(--ink-300);
}
.beyond-strip__link {
  font-size: var(--fs-small);
  color: var(--emerald);
  border: 1px solid var(--emerald);
  padding: var(--sp-2) var(--sp-5);
  border-radius: var(--r-sm);
  white-space: nowrap;
  transition: background var(--dur-fast) var(--ease-std), color var(--dur-fast) var(--ease-std);
  flex-shrink: 0;
}
.beyond-strip__link:hover {
  background: var(--emerald);
  color: var(--ink-900);
}