:root {
  --bg: #ffffff;
  --ink: #203048;
  --muted: #66758b;
  --line: #dce7f2;
  --blue: #4f79e7;
  --blue-2: #2e6fd3;
  --teal: #37b9ad;
  --lavender: #8f7ae7;
  --soft: #f7fbff;
  --shadow: 0 18px 50px rgba(51, 82, 120, 0.10);
  --radius: 8px;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img, svg { max-width: 100%; display: block; }
button, input, textarea, select { font: inherit; }
.container { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }

.skip-link {
  position: absolute;
  top: -60px;
  left: 16px;
  z-index: 999;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--ink);
  color: white;
}
.skip-link:focus { top: 12px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(220,231,242,.9);
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(14px);
}
.nav-wrap {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand { display: inline-flex; align-items: center; gap: 6px; }
.brand-mark { width: 92px; height: 74px; object-fit: contain; flex: 0 0 auto; }
.brand-copy { display: flex; flex-direction: column; line-height: 1.08; }
.brand-copy strong { font-size: 1.42rem; letter-spacing: .12em; font-weight: 700; }
.brand-copy small {
  margin-top: 5px;
  max-width: 285px;
  color: var(--muted);
  font-size: .71rem;
  line-height: 1.25;
}

.main-nav { display: flex; align-items: center; gap: 24px; }
.main-nav a { color: #425168; font-size: .94rem; font-weight: 650; }
.main-nav a:not(.button):hover,
.main-nav a.active { color: var(--blue-2); }
.nav-toggle { display: none; border: 0; background: transparent; padding: 8px; cursor: pointer; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--ink); margin: 5px 0; border-radius: 999px; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 21px;
  border: 1px solid var(--blue);
  border-radius: 9px;
  background: linear-gradient(135deg, #5b82ee, #3877e7);
  color: white !important;
  font-weight: 700;
  box-shadow: 0 8px 22px rgba(61,112,220,.16);
  transition: transform .18s ease, box-shadow .18s ease;
}
.button:hover { transform: translateY(-1px); box-shadow: 0 11px 28px rgba(61,112,220,.22); }
.button-small { min-height: 40px; padding: 0 17px; }
.button-outline { background: white; color: var(--blue-2) !important; box-shadow: none; }

.hero {
  position: relative;
  overflow: hidden;
  padding: 58px 0 58px;
  background: linear-gradient(180deg, #fbfdff 0%, #ffffff 72%);
}
.hero-grid { display: grid; grid-template-columns: 1.03fr .97fr; gap: 54px; align-items: center; }
.eyebrow {
  display: inline-flex;
  padding: 7px 11px;
  border-radius: 8px;
  background: #eef4ff;
  border: 1px solid #d4e2ff;
  color: var(--blue-2);
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .02em;
}
h1, h2, h3 { margin: 0; line-height: 1.18; }
.hero-title {
  margin-top: 16px;
  max-width: 690px;
  font-size: clamp(1.95rem, 3.1vw, 2.85rem);
  line-height: 1.22;
  font-weight: 720;
  letter-spacing: 0;
}
h2 { font-size: clamp(1.7rem, 2.7vw, 2.45rem); letter-spacing: -.015em; }
h3 { font-size: 1.06rem; }
.hero-lead {
  margin: 20px 0 0;
  max-width: 620px;
  color: var(--muted);
  font-size: 1.02rem;
}
.hero-actions { display: flex; gap: 13px; margin-top: 25px; }
.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 9px 18px;
  margin-top: 24px;
  color: #52637a;
  font-size: .87rem;
  font-weight: 650;
}
.hero-trust span::before { content: "•"; color: var(--teal); margin-right: 8px; }
.hero-visual {
  width: min(100%, 500px);
  justify-self: end;
  overflow: hidden;
  border: 1px solid #dbe8f5;
  border-radius: 18px;
  box-shadow: 0 24px 44px rgba(53,83,110,.12);
  background: #fff;
}
.hero-visual img {
  display: block;
  width: 100%;
  height: clamp(285px, 31vw, 370px);
  object-fit: cover;
}

.section { padding: 72px 0; }
.section.soft {
  background: var(--soft);
  border-top: 1px solid #edf3f8;
  border-bottom: 1px solid #edf3f8;
}
.section-heading { max-width: 760px; margin: 0 auto 38px; text-align: center; }
.section-heading h2 { margin-top: 13px; }
.section-heading p { margin: 14px 0 0; color: var(--muted); font-size: 1.02rem; }
#workflow .section-heading { margin-bottom: 22px; }

.core-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.core-card {
  padding: 28px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: white;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.core-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: #c9d9eb; }
.core-card h3 { margin-top: 18px; font-size: 1.16rem; }
.core-card p { margin: 10px 0 0; color: var(--muted); font-size: .94rem; }
.icon-circle {
  width: 58px;
  height: 58px;
  border-radius: 50%;
  display: grid;
  place-items: center;
}
.icon-circle svg { width: 32px; height: 32px; }
.icon-circle.blue { color: #4673df; background: #edf2ff; }
.icon-circle.teal { color: #2d9f98; background: #e8f7f5; }
.icon-circle.lavender { color: #7c6add; background: #f0edff; }

.support-strip {
  width: fit-content;
  margin: 18px auto 0;
  padding: 14px 16px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 12px;
  border: 1px solid #dce8f2;
  border-radius: 8px;
  background: #fbfdff;
}
.support-strip span + span::before {
  content: "·";
  margin-right: 12px;
  color: #94a4b8;
  font-weight: 800;
}
.support-strip span {
  color: #52647b;
  font-size: .85rem;
  font-weight: 700;
}

.workflow-diagram {
  width: min(100%, 800px);
  margin: 0 auto;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  box-shadow: 0 18px 36px rgba(45,72,96,.08);
}
.workflow-diagram img {
  display: block;
  width: 100%;
  height: auto;
}

.research-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}
.research-copy h2 {
  margin-top: 13px;
  font-size: clamp(1.45rem, 2.2vw, 2rem);
}
.research-copy p { margin: 14px 0 0; color: var(--muted); }
.research-tags {
  display: grid;
  gap: 10px;
}
.research-tags div {
  padding: 14px 15px;
  border: 1px solid #dce8f2;
  border-radius: 8px;
  background: #fbfdff;
}
.research-tags span,
.research-tags strong {
  display: block;
}
.research-tags span {
  color: var(--ink);
  font-size: .93rem;
  font-weight: 800;
}
.research-tags strong {
  margin-top: 4px;
  color: var(--muted);
  font-size: .82rem;
  font-weight: 700;
}

.responsible-block {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 34px;
  align-items: center;
  padding: 24px 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}
.responsible-block h2 {
  margin-top: 12px;
  font-size: clamp(1.45rem, 2.2vw, 2rem);
}
.responsible-copy strong {
  display: block;
  color: var(--ink);
  font-size: .95rem;
}
.responsible-copy p {
  margin: 9px 0 0;
  color: var(--muted);
  font-size: .95rem;
}

.cta-section { padding: 0 0 78px; }
.cta-card {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 46px;
  padding: 38px;
  border: 1px solid #cbe8e4;
  border-radius: 8px;
  background: linear-gradient(135deg, #f4fbff 0%, #f0fbf8 100%);
}
.cta-card h2 {
  margin-top: 13px;
  font-size: clamp(1.6rem, 2.2vw, 2.1rem);
  line-height: 1.22;
}
.cta-card p { color: var(--muted); }
.text-link { color: var(--blue-2); font-weight: 700; }
.text-link:hover { text-decoration: underline; }

.contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.contact-form label { display: grid; gap: 6px; }
.contact-form label span { font-size: .78rem; color: #53657a; font-weight: 700; }
.contact-form input,
.contact-form textarea,
.contact-form select {
  width: 100%;
  border: 1px solid #cfddeb;
  border-radius: 9px;
  padding: 12px 13px;
  background: white;
  color: var(--ink);
  outline: none;
}
.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(79,121,231,.10);
}
.contact-form .full { grid-column: 1 / -1; }
.form-note { margin: 0; color: #278a7e !important; font-size: .86rem; }

.site-footer { border-top: 1px solid var(--line); padding: 28px 0 22px; }
.footer-brand-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.footer-brand {
  flex: 0 0 auto;
  min-width: 420px;
}
.footer-brand .brand-copy small {
  max-width: none;
  line-height: 1.35;
  white-space: nowrap;
}
.footer-funding-side {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 16px;
  text-align: right;
}
.footer-funding-side img {
  width: auto;
  height: 55px;
  flex: 0 0 auto;
  object-fit: contain;
}
.footer-funding-side p {
  margin: 0;
  color: var(--muted);
  font-size: .84rem;
  max-width: 360px;
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .79rem;
}
.footer-bottom p:last-child { max-width: 650px; text-align: right; }

.page-hero {
  padding: 58px 0 38px;
  background: linear-gradient(180deg, #fbfdff 0%, #ffffff 72%);
}
.page-hero-copy {
  max-width: 780px;
}
.page-hero-copy h1 {
  margin-top: 16px;
  font-size: clamp(1.95rem, 3vw, 2.85rem);
  line-height: 1.2;
  font-weight: 720;
  letter-spacing: 0;
}
.page-hero-copy p {
  margin: 18px 0 0;
  max-width: 680px;
  color: var(--muted);
}
.resource-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.resource-card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}
.resource-card p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: .94rem;
}
.publication-list {
  display: grid;
  gap: 16px;
}
.publication-item {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}
.publication-meta {
  margin-bottom: 8px;
  color: var(--blue-2);
  font-size: .78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .03em;
}
.publication-item p {
  margin: 8px 0 0;
  color: var(--muted);
}
.publication-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 15px;
}
.publication-actions button {
  min-height: 36px;
  padding: 0 13px;
  border: 1px solid #cfddeb;
  border-radius: 8px;
  background: #f5f8fb;
  color: #7b8999;
  font: inherit;
  font-size: .83rem;
  font-weight: 700;
  cursor: not-allowed;
}
.bibtex {
  overflow-x: auto;
  margin: 15px 0 0;
  padding: 14px;
  border: 1px solid #e1eaf3;
  border-radius: 8px;
  background: #f8fbfd;
  color: #4f5f73;
  font-size: .78rem;
  line-height: 1.55;
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .55s ease, transform .55s ease;
}
.reveal.visible { opacity: 1; transform: none; }

@media (max-width: 1050px) {
  .main-nav { gap: 16px; }
  .hero-grid { gap: 38px; }
  .resource-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 820px) {
  .container { width: min(100% - 28px, var(--max)); }
  .nav-toggle { display: block; }
  .main-nav {
    position: absolute;
    left: 14px;
    right: 14px;
    top: 70px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    border: 1px solid var(--line);
  border-radius: 8px;
    background: white;
    box-shadow: var(--shadow);
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 7px 4px; }
  .main-nav .button { margin-top: 4px; }

  .hero { padding-top: 40px; }
  .hero-grid,
  .research-card,
  .responsible-block,
  .cta-card { grid-template-columns: 1fr; }
  .core-grid { grid-template-columns: 1fr; }
  .hero-copy { order: 1; }
  .hero-visual {
    order: 2;
    width: 100%;
    justify-self: stretch;
  }
  .hero-visual img {
    height: auto;
    aspect-ratio: 3 / 2;
  }
  .footer-brand-line {
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 20px;
  }
  .footer-funding-side { margin-left: auto; }
  .footer-bottom { flex-direction: column; }
  .footer-bottom p:last-child { text-align: left; }
}

@media (max-width: 560px) {
  .brand-copy small { display: none; }
  .nav-wrap { min-height: 68px; }
  .brand-mark { width: 78px; height: 62px; }
  .hero { padding: 34px 0 48px; }
  .hero-title { font-size: 1.85rem; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .section { padding: 58px 0; }
  .resource-grid,
  .contact-form { grid-template-columns: 1fr; }
  .workflow-diagram { width: 100%; }
  .contact-form .full { grid-column: auto; }
  .cta-card,
  .responsible-block { padding: 26px 20px; }
  .footer-brand {
    min-width: 0;
    width: 100%;
  }
  .footer-brand .brand-copy small { white-space: normal; }
  .footer-brand-line { flex-direction: column; }
  .footer-funding-side {
    margin-left: 0;
    justify-content: flex-start;
    text-align: left;
  }
  .footer-funding-side img { height: 48px; }
}