/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* ── Brand palette (Biotechnology Valley) ── */
  --teal:       #00B8D4;
  --teal-dark:  #0098B0;
  --teal-light: #22D4EC;
  --blue:       #0076B8;
  --blue-dark:  #005A96;
  --dark:       #093A56;   /* deep bg, replaces navy */
  --dark-mid:   #0D4D6E;

  /* Aliases so existing refs keep working */
  --red:       var(--teal);
  --red-dark:  var(--teal-dark);
  --navy:      var(--dark);
  --navy-mid:  var(--dark-mid);

  /* ── Neutrals ── */
  --gray-50:  #f9fafb;
  --gray-100: #f0f7fa;
  --gray-200: #daeaf0;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-700: #374151;
  --gray-900: #111827;
  --white:    #ffffff;

  --font:     'Inter', system-ui, sans-serif;
  --radius:   8px;
  --radius-lg:16px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.07);
  --shadow-md: 0 4px 20px rgba(0,0,0,.10);
  --shadow-lg: 0 12px 40px rgba(0,0,0,.14);

  --max-w:    1200px;
  --pad:      clamp(16px, 4vw, 48px);

  /* ── Brand gradient ── */
  --grad: linear-gradient(135deg, var(--dark) 0%, var(--blue) 55%, var(--teal) 100%);
  --grad-h: linear-gradient(135deg, var(--teal) 0%, var(--blue) 100%);
}

html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--gray-900); background: var(--white); line-height: 1.6; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
p + p { margin-top: .9em; }

.container { width: 100%; max-width: var(--max-w); margin-inline: auto; padding-inline: var(--pad); }

/* ===== SHARED LABELS ===== */
.section-label {
  display: inline-block;
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--red);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.6rem, 3.2vw, 2.25rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--dark);
  margin-bottom: 20px;
}

/* ===== TOP BAR ===== */
.top-bar {
  background: var(--dark);
  color: var(--white);
  font-size: .8rem;
  padding: 8px 0;
  border-bottom: 1px solid rgba(0,184,212,.2);
}
.top-bar__inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.top-bar__logos { display: flex; align-items: center; gap: 16px; }
.top-bar__logo { height: 30px; width: auto; filter: brightness(0) invert(1); }
.top-bar__actions { display: flex; align-items: center; gap: 10px; }
.top-bar__social { color: rgba(255,255,255,.65); transition: color .2s; display: flex; align-items: center; }
.top-bar__social:hover { color: var(--white); }
.top-bar__divider { width: 1px; height: 16px; background: rgba(255,255,255,.25); margin: 0 4px; }
.top-bar__lang { color: rgba(255,255,255,.55); font-weight: 500; font-size: .75rem; transition: color .2s; }
.top-bar__lang--active { color: var(--white); font-weight: 700; }
.top-bar__lang:hover { color: var(--white); }
.top-bar__lang-sep { color: rgba(255,255,255,.3); font-size: .7rem; }
.top-bar__flag { height: 18px; width: auto; border-radius: 2px; flex-shrink: 0; }
.top-bar__brand { font-size: .8rem; font-weight: 600; color: rgba(255,255,255,.85); letter-spacing: .02em; }
.top-bar__bio-logo { height: 28px; width: auto; filter: brightness(0) invert(1); }

/* ===== HEADER ===== */
.header {
  background: var(--white);
  border-bottom: 3px solid var(--teal);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}
.header__inner { display: flex; align-items: center; justify-content: space-between; padding-block: 14px; gap: 24px; }
.header__logo { display: flex; align-items: center; gap: 16px; }
.header__logo img { height: 44px; width: auto; }
.header__logo img:last-child { height: 64px; }
.header__logo-divider { width: 1px; height: 56px; background: var(--gray-200); flex-shrink: 0; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav__link {
  font-size: .875rem;
  font-weight: 500;
  color: var(--gray-700);
  padding: 8px 14px;
  border-radius: var(--radius);
  transition: background .18s, color .18s;
  white-space: nowrap;
}
.nav__link:hover { background: var(--gray-100); color: var(--red); }
.nav__link--cta {
  background: var(--red);
  color: var(--white) !important;
  font-weight: 600;
  margin-left: 8px;
}
.nav__link--cta:hover { background: var(--red-dark); }

.nav__mobile-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.nav__mobile-toggle span { display: block; width: 24px; height: 2px; background: var(--gray-700); border-radius: 2px; transition: transform .3s, opacity .3s; }

/* ===== HERO BANNER ===== */
.hero {
  position: relative;
  height: 480px;
  width: 100%;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center 30%;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    to right,
    rgba(9,58,86,.18) 0%,
    rgba(9,58,86,.08) 40%,
    rgba(9,58,86,.04) 100%
  );
}

.hero__inner {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  align-items: center;
}

/* White card — like German Pavilion */
.hero__card {
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(4px);
  padding: 36px 40px 40px;
  max-width: 420px;
  box-shadow: 0 8px 40px rgba(9,58,86,.18);
}

.hero__card-accent {
  width: 48px;
  height: 4px;
  background: var(--grad-h);
  margin-bottom: 20px;
  border-radius: 2px;
}

.hero__eyebrow {
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--teal);
  margin-bottom: 10px;
}

.hero__title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  color: var(--dark);
  line-height: 1.1;
  letter-spacing: -.02em;
}

.hero__card-divider {
  width: 100%;
  height: 2px;
  background: var(--grad-h);
  margin: 18px 0;
  opacity: .25;
}

.hero__subtitle {
  font-size: .95rem;
  color: var(--gray-700);
  font-weight: 500;
  margin-bottom: 20px;
  line-height: 1.5;
}

.hero__meta {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-bottom: 28px;
}
.hero__meta li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .82rem;
  color: var(--gray-700);
  font-weight: 500;
}
.hero__meta svg { color: var(--teal); flex-shrink: 0; }

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--grad-h);
  color: var(--white);
  font-size: .78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  padding: 12px 22px;
  transition: opacity .2s, transform .2s;
}
.hero__cta:hover { opacity: .88; transform: translateX(2px); }

/* ===== EVENT STRIP ===== */
.event-strip {
  background: var(--grad);
  padding: 22px 0;
}
.event-strip__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
}
.event-strip__item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 32px;
  color: var(--white);
}
.event-strip__item svg { color: var(--red); flex-shrink: 0; }
.event-strip__item strong { display: block; font-size: .7rem; text-transform: uppercase; letter-spacing: .08em; color: rgba(255,255,255,.55); font-weight: 600; margin-bottom: 2px; }
.event-strip__item span { font-size: .9rem; font-weight: 500; }
.event-strip__divider { width: 1px; height: 40px; background: rgba(255,255,255,.12); }

/* ===== ABOUT ===== */
.about { padding: 96px 0; background: var(--white); }
.about__inner { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 64px; align-items: start; }

.about__lead {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--gray-900);
  line-height: 1.7;
  margin-bottom: 16px;
}
.about__body { color: var(--gray-700); font-size: .95rem; line-height: 1.8; }

.about__scope {
  margin-top: 32px;
  padding: 24px;
  background: var(--gray-100);
  border-left: 4px solid var(--teal);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.about__scope-title {
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--teal);
  margin-bottom: 12px;
}
.about__scope p { font-size: .9rem; color: var(--gray-700); line-height: 1.7; }

.about__image-col { position: relative; }
.about__image { width: 100%; border-radius: var(--radius-lg); object-fit: cover; aspect-ratio: 4/3; box-shadow: var(--shadow-lg); }
.about__bio-logo-wrap {
  position: absolute;
  bottom: -20px;
  right: -16px;
  background: var(--white);
  border-radius: var(--radius);
  padding: 12px 16px;
  box-shadow: var(--shadow-md);
}
.about__bio-logo { height: 36px; width: auto; }

/* ===== STATS ===== */
.stats { background: var(--grad); padding: 56px 0; }
.stats__label-top {
  text-align: center;
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: rgba(255,255,255,.7);
  margin-bottom: 36px;
}
.stats__grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
  text-align: center;
}
.stats__item { padding: 8px; display: flex; flex-direction: column; align-items: center; justify-content: flex-start; }
.stats__number {
  display: block;
  font-size: clamp(1.4rem, 2.4vw, 2.2rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 8px;
  letter-spacing: -.02em;
  min-height: 2.5em;
  display: flex;
  align-items: center;
  justify-content: center;
}
.stats__desc { font-size: .78rem; color: rgba(255,255,255,.8); font-weight: 500; line-height: 1.35; }

/* ===== BIOTECHNOLOGY VALLEY ===== */
.biotech { padding: 96px 0; background: var(--gray-100); }
.biotech__inner { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 64px; align-items: center; }
.biotech__video-col { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); aspect-ratio: 16/9; background: var(--dark); }
.biotech__video { width: 100%; height: 100%; object-fit: cover; display: block; }
.biotech__subtitle {
  font-size: 1rem;
  font-weight: 600;
  color: var(--red);
  margin-bottom: 20px;
  margin-top: -8px;
}
.biotech__text p { font-size: .95rem; color: var(--gray-700); line-height: 1.8; }
.biotech__features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 28px;
}
.biotech__feature {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 12px 14px;
  font-size: .85rem;
  font-weight: 500;
  color: var(--gray-700);
}
.biotech__feature-icon { flex-shrink: 0; display: flex; align-items: center; color: var(--blue); }

/* ===== INVEST ===== */
.invest { padding: 96px 0; background: var(--white); }
.invest__header { text-align: center; max-width: 680px; margin: 0 auto 56px; }
.invest__intro { font-size: 1rem; color: var(--gray-700); line-height: 1.75; }
.invest__grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
}
.invest__card {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: box-shadow .2s, transform .2s;
}
.invest__card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.invest__card--wide { grid-column: 1 / -1; display: grid; grid-template-columns: auto 1fr; gap: 20px 24px; align-items: start; }
.invest__card--wide h3 { grid-column: 2; }
.invest__card--wide p { grid-column: 2; }
.invest__card-icon {
  width: 52px; height: 52px;
  background: rgba(0,184,212,.1);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  color: var(--teal);
  flex-shrink: 0;
}
.invest__card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 16px; color: var(--dark); }
.invest__card--wide .invest__card-icon { grid-row: 1 / 3; }
.invest__card p { font-size: .9rem; color: var(--gray-700); line-height: 1.7; }
.invest__list { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.invest__list li {
  font-size: .875rem;
  color: var(--gray-700);
  padding-left: 18px;
  position: relative;
  line-height: 1.5;
}
.invest__card--image {
  padding: 0;
  overflow: hidden;
  border: none;
}
.invest__card--image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  min-height: 200px;
}

.invest__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--teal);
}

/* ===== BOXES BACKGROUND ===== */
.boxes-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}
.boxes-bg__inner {
  position: absolute;
  left: 10%;
  top: -40%;
  display: flex;
  width: 140%;
  height: 160%;
  padding: 16px;
  transform: translate(-40%, -40%) skewX(-48deg) skewY(14deg) scale(0.675) translateZ(0);
  pointer-events: none;
}
.boxes-row {
  width: 64px;
  flex-shrink: 0;
  position: relative;
  border-left: 1px solid rgba(0,184,212,.15);
}
.boxes-cell {
  width: 64px;
  height: 32px;
  border-right: 1px solid rgba(0,184,212,.15);
  border-top: 1px solid rgba(0,184,212,.15);
  position: relative;
  pointer-events: all;
  transition: background-color 2s ease;
  cursor: default;
}
.boxes-cell:hover { transition: background-color 0s; }
.boxes-plus {
  position: absolute;
  width: 40px;
  height: 24px;
  top: -14px;
  left: -22px;
  color: rgba(0,184,212,.25);
  pointer-events: none;
}

/* ===== PROJECTS ===== */
.projects { padding: 96px 0; background: var(--dark); position: relative; overflow: hidden; }
.projects .section-label { color: var(--teal-light); }
.projects .section-title { color: var(--white); }
.projects > .container { position: relative; z-index: 1; pointer-events: none; }
.projects__header { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.projects__intro { font-size: .95rem; color: rgba(255,255,255,.7); line-height: 1.8; }

.projects__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.project-card {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: background .2s, border-color .2s;
}
.project-card:hover { background: rgba(255,255,255,.09); border-color: rgba(255,255,255,.2); }
.project-card--wide { grid-column: 1 / -1; }
.project-card__tag {
  display: inline-block;
  font-size: .68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .09em;
  color: var(--teal-light);
  background: rgba(0,184,212,.15);
  padding: 3px 8px;
  border-radius: 99px;
  margin-bottom: 14px;
}
.project-card__title { font-size: 1.1rem; font-weight: 700; color: var(--white); margin-bottom: 4px; }
.project-card__sub { font-size: .8rem; color: rgba(255,255,255,.5); margin-bottom: 14px; font-style: italic; }
.project-card__desc { font-size: .875rem; color: rgba(255,255,255,.72); line-height: 1.7; }
.project-card__desc strong { color: rgba(255,255,255,.9); font-weight: 600; }

/* ===== VISIT US ===== */
.visit { padding: 96px 0; background: var(--white); }
.visit__inner { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.visit__text .section-title { margin-bottom: 16px; }
.visit__text p { font-size: .95rem; color: var(--gray-700); line-height: 1.75; }
.visit__details { margin: 28px 0; display: flex; flex-direction: column; gap: 12px; }
.visit__detail { display: flex; gap: 16px; font-size: .9rem; }
.visit__detail-label { font-weight: 700; color: var(--dark); min-width: 100px; }
.visit__detail span:last-child { color: var(--gray-700); }
.visit__image { width: 100%; border-radius: var(--radius-lg); object-fit: cover; aspect-ratio: 4/3; box-shadow: var(--shadow-lg); }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: .9rem;
  font-weight: 600;
  transition: background .2s, color .2s, border-color .2s;
  cursor: pointer;
  border: 2px solid transparent;
}
.btn--red { background: var(--grad-h); color: var(--white); }
.btn--red:hover { background: var(--blue-dark); }
.btn--white { background: var(--white); color: var(--navy); }
.btn--white:hover { background: var(--gray-100); }
.btn--outline-white { background: transparent; color: var(--white); border-color: rgba(255,255,255,.4); }
.btn--outline-white:hover { background: rgba(255,255,255,.1); border-color: var(--white); }

/* ===== EVENT PROGRAM ===== */
.program { padding: 96px 0; background: var(--gray-50); }
.program__header { text-align: center; max-width: 680px; margin: 0 auto 56px; }
.program__intro { font-size: .95rem; color: var(--gray-500); line-height: 1.75; }
.program__note { margin-top: 40px; font-size: .85rem; color: var(--gray-500); text-align: center; font-style: italic; }

.program__schedule { display: flex; flex-direction: column; gap: 0; border: 1px solid var(--gray-200); border-radius: var(--radius-lg); overflow: hidden; }

.program__day { display: grid; grid-template-columns: 100px 1fr; }
.program__day + .program__day { border-top: 2px solid var(--gray-200); }

.program__day-label {
  background: var(--grad);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px 16px;
  border-right: 1px solid rgba(255,255,255,.06);
}
.program__day-date { font-size: 2.5rem; font-weight: 800; color: var(--white); line-height: 1; }
.program__day-month { font-size: .75rem; font-weight: 600; text-transform: uppercase; letter-spacing: .1em; color: rgba(255,255,255,.55); margin-top: 4px; }

.program__day-sessions { display: flex; flex-direction: column; }

.program__session {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 0;
  padding: 24px 28px;
  border-bottom: 1px solid var(--gray-100);
  transition: background .15s;
}
.program__session:last-child { border-bottom: none; }
.program__session:hover { background: var(--gray-50); }

.program__session-time {
  font-size: .82rem;
  font-weight: 700;
  color: var(--teal);
  padding-top: 3px;
  padding-right: 16px;
  white-space: nowrap;
}
.program__session-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--dark);
  line-height: 1.4;
  margin-bottom: 6px;
}
.program__session-speaker {
  font-size: .82rem;
  color: var(--gray-500);
}
.program__session-speaker em { font-style: italic; }

/* ===== EXHIBITORS ===== */
.exhibitors { padding: 80px 0; background: var(--gray-50); }
.exhibitors__inner { text-align: center; }
.exhibitors__note { max-width: 600px; margin: 0 auto 40px; font-size: .95rem; color: var(--gray-700); line-height: 1.75; }
.exhibitors__placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 48px;
  border: 2px dashed var(--gray-200);
  border-radius: var(--radius-lg);
  color: var(--gray-400);
  max-width: 400px;
  margin: 0 auto;
}
.exhibitors__placeholder p { font-size: .9rem; font-weight: 500; }

/* ===== GALLERY STRIP ===== */
.gallery-strip { overflow: hidden; background: var(--navy); height: 170px; }
.gallery-strip__track {
  display: flex;
  height: 100%;
  gap: 4px;
  animation: galleryScroll 32s linear infinite;
  width: max-content;
}
.gallery-strip__track:hover { animation-play-state: paused; }
.gallery-strip__track img { height: 100%; width: auto; object-fit: cover; flex-shrink: 0; opacity: .8; transition: opacity .3s; }
.gallery-strip__track img:hover { opacity: 1; }
@keyframes galleryScroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ===== FOOTER ===== */
.footer { background: var(--dark); padding: 56px 0 0; }
.footer__inner {
  display: grid;
  grid-template-columns: auto auto 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.08);
  align-items: start;
}
.footer__logo { height: 80px; width: auto; margin-bottom: 12px; }
.footer__tagline { font-size: .8rem; color: rgba(255,255,255,.5); }
.footer__bio-logo { height: 60px; width: auto; margin-bottom: 12px; }
.footer__event { font-size: .85rem; color: rgba(255,255,255,.6); line-height: 1.7; }
.footer__mini-contact { list-style: none; margin-top: 12px; display: flex; flex-direction: column; gap: 6px; }
.footer__mini-contact li { display: flex; align-items: center; gap: 6px; font-size: .78rem; color: rgba(255,255,255,.45); }
.footer__mini-contact svg { flex-shrink: 0; color: rgba(255,255,255,.35); }
.footer__mini-contact a { color: rgba(255,255,255,.55); transition: color .2s; }
.footer__mini-contact a:hover { color: var(--white); }
.footer__links { text-align: right; }
.footer__nav, .footer__legal { display: flex; gap: 20px; justify-content: flex-end; flex-wrap: wrap; }
.footer__nav { margin-bottom: 16px; }
.footer__nav a { font-size: .875rem; color: rgba(255,255,255,.65); transition: color .2s; }
.footer__nav a:hover { color: var(--white); }
.footer__legal a { font-size: .78rem; color: rgba(255,255,255,.4); transition: color .2s; }
.footer__legal a:hover { color: rgba(255,255,255,.7); }
.footer__bottom { padding: 20px 0; }
.footer__bottom p { font-size: .78rem; color: rgba(255,255,255,.35); text-align: center; line-height: 1.6; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .stats__grid { grid-template-columns: repeat(3, 1fr); }
  .invest__grid { grid-template-columns: 1fr 1fr; }
  .invest__card--wide { grid-column: auto; display: block; }
  .invest__card--wide .invest__card-icon { margin-bottom: 16px; }
  .projects__grid { grid-template-columns: 1fr 1fr; }
  .project-card--wide { grid-column: auto; }
  .footer__inner { grid-template-columns: 1fr 1fr; }
  .footer__links { text-align: left; grid-column: 1 / -1; }
  .footer__nav, .footer__legal { justify-content: flex-start; }
}

@media (max-width: 768px) {
  .nav { display: none; }
  .nav__mobile-toggle { display: flex; }
  .nav.is-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: var(--white);
    border-top: 1px solid var(--gray-200);
    padding: 12px;
    box-shadow: var(--shadow-md);
  }

  .event-strip__inner { gap: 0; flex-direction: column; align-items: center; }
  .event-strip__item { padding: 8px 16px; width: 100%; max-width: 320px; justify-content: flex-start; }
  .event-strip__divider { display: none; }

  .about__inner,
  .biotech__inner,
  .visit__inner { grid-template-columns: 1fr; gap: 40px; }
  .about__image-col { order: -1; }
  .about__bio-logo-wrap { display: none; }

  .stats__grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }

  .invest__grid { grid-template-columns: 1fr; }

  .projects__grid { grid-template-columns: 1fr; }

  .footer__inner { grid-template-columns: 1fr; gap: 32px; }
  .footer__links { text-align: left; }

  .hero { height: auto; min-height: 320px; }
  .hero__bg { position: relative; height: 240px; }
  .hero__overlay { position: absolute; }
  .hero__inner { position: relative; padding-block: 0; }
  .hero__card { max-width: 100%; margin: -40px 0 0; position: relative; z-index: 3; }

  .program__day { grid-template-columns: 72px 1fr; }
  .program__day-date { font-size: 1.8rem; }
  .program__session { grid-template-columns: 110px 1fr; padding: 18px 16px; }
}

@media (max-width: 480px) {
  .hero__meta { flex-direction: column; align-items: flex-start; gap: 6px; }
  .hero__meta-sep { display: none; }
  .biotech__features { grid-template-columns: 1fr; }
  .stats__grid { grid-template-columns: 1fr 1fr; }
}

/* ===== SCROLL TO TOP ===== */
.scroll-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 999;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--blue);
  color: var(--white);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0,0,0,.2);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .25s, transform .25s, background .2s;
  pointer-events: none;
}
.scroll-top.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.scroll-top:hover { background: var(--teal); }