:root {
  color-scheme: light;
  --ink: #111827;
  --muted: #5d6676;
  --soft: #eef3f7;
  --line: #d7dde5;
  --blue: #0957b8;
  --blue-dark: #07346d;
  --paper: #ffffff;
  --graphite: #15191f;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

img {
  display: block;
  width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: fixed;
  z-index: 50;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 22px clamp(22px, 4vw, 58px);
  color: #fff;
  background: linear-gradient(180deg, rgba(6, 14, 27, 0.76), rgba(6, 14, 27, 0));
}

.brand,
.site-header nav {
  display: flex;
  align-items: center;
}

.brand {
  gap: 12px;
  font-weight: 800;
  letter-spacing: 0;
}

.spbu-seal {
  width: 46px;
  height: 46px;
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 50%;
  background: radial-gradient(circle at 38% 28%, #c9473d 0%, #9f211c 64%, #681514 100%);
  border: 2px solid rgba(255, 255, 255, 0.74);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
}

.spbu-seal img {
  width: 68%;
  height: 68%;
  object-fit: contain;
  filter: brightness(0) invert(1);
}

.site-header nav {
  gap: clamp(14px, 2.5vw, 34px);
  font-size: 14px;
  font-weight: 600;
}

.hero {
  min-height: 96vh;
  position: relative;
  display: grid;
  align-items: end;
  overflow: hidden;
  color: #fff;
  background: var(--graphite);
}

.hero picture,
.hero picture::after {
  position: absolute;
  inset: 0;
}

.hero picture::after {
  content: "";
  background:
    linear-gradient(90deg, rgba(5, 11, 21, 0.86) 0%, rgba(5, 11, 21, 0.46) 48%, rgba(5, 11, 21, 0.12) 100%),
    linear-gradient(0deg, rgba(5, 11, 21, 0.78) 0%, rgba(5, 11, 21, 0) 42%);
}

.hero img {
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-copy {
  position: relative;
  width: min(980px, calc(100% - 44px));
  margin: 0 auto;
  padding: 150px 0 82px;
}

.institution-label {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  max-width: 840px;
  margin-bottom: 24px;
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.34);
  color: rgba(255, 255, 255, 0.88);
  font-size: 15px;
  font-weight: 800;
  text-transform: uppercase;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 13px 22px;
  margin-bottom: 24px;
  font-size: 13px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.82);
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 920px;
  margin-bottom: 24px;
  font-family: "Playfair Display", Georgia, serif;
  font-size: clamp(42px, 6.2vw, 82px);
  line-height: 0.98;
  font-weight: 700;
}

.hero-copy p {
  max-width: 760px;
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.86);
  font-size: clamp(17px, 2vw, 21px);
}

section {
  padding: clamp(74px, 10vw, 128px) clamp(22px, 4vw, 58px);
}

.summary,
.institution,
.analysis-method,
.timeline,
.team,
.reports,
.supplement,
.certificate,
.open-access {
  max-width: calc(var(--max) + 116px);
  margin: 0 auto;
}

.section-kicker {
  margin-bottom: 18px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.summary-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: clamp(38px, 7vw, 90px);
  align-items: start;
}

h2 {
  margin-bottom: 24px;
  font-family: "Playfair Display", Georgia, serif;
  font-size: clamp(34px, 4vw, 56px);
  line-height: 1.04;
  font-weight: 700;
  color: var(--graphite);
}

.lead,
.section-heading p,
.supplement p,
.open-access p {
  color: var(--muted);
  font-size: 18px;
}

.facts {
  margin: 8px 0 0;
  border-top: 1px solid var(--line);
}

.facts div {
  display: grid;
  grid-template-columns: 0.55fr 1fr;
  gap: 20px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.facts dt {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
}

.facts dd {
  margin: 0;
  color: var(--graphite);
  font-weight: 800;
}

.institution {
  padding-top: 34px;
  padding-bottom: 88px;
}

.institution-card {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: clamp(34px, 6vw, 78px);
  align-items: start;
  padding: clamp(32px, 5vw, 58px) 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.spbu-seal.large {
  width: 164px;
  height: 164px;
  justify-self: center;
  align-self: start;
  border-width: 4px;
}

.institution-card h2 {
  max-width: 890px;
}

.institution-card p {
  max-width: 850px;
  color: var(--muted);
  font-size: 18px;
}

.panorama {
  max-width: none;
  padding: 0;
  background: var(--graphite);
}

.panorama img {
  height: min(70vh, 680px);
  min-height: 420px;
  object-fit: cover;
  object-position: center;
}

.analysis-method {
  padding-bottom: 44px;
}

.analysis-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.analysis-columns article {
  padding: 30px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.analysis-columns h3 {
  margin-bottom: 12px;
  color: var(--graphite);
  font-size: 22px;
}

.analysis-columns p {
  margin: 0;
  color: var(--muted);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 48px;
}

.section-heading.wide {
  max-width: none;
  display: grid;
  grid-template-columns: 1fr minmax(280px, 470px);
  gap: 48px;
  align-items: end;
}

.stage-list {
  display: grid;
  gap: 28px;
}

.stage {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: clamp(24px, 4vw, 56px);
  padding: 38px 0;
  border-top: 1px solid var(--line);
}

.stage:last-child {
  border-bottom: 1px solid var(--line);
}

.stage-number {
  color: var(--blue);
  font-family: "Playfair Display", Georgia, serif;
  font-size: 54px;
  line-height: 1;
  font-weight: 700;
}

.stage h3,
.role-grid h3,
.caption h3 {
  margin-bottom: 8px;
  color: var(--graphite);
  font-size: 24px;
  line-height: 1.16;
}

.date,
.role-title {
  margin-bottom: 16px;
  color: var(--blue-dark);
  font-size: 14px;
  font-weight: 800;
  text-transform: uppercase;
}

.stage p,
.stage li,
.role-grid p,
.caption p {
  color: var(--muted);
}

.stage ul {
  display: grid;
  gap: 8px;
  margin: 20px 0 0;
  padding-left: 18px;
}

.role-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.role-grid article {
  min-height: 360px;
  padding: 28px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.role-grid p:last-child {
  margin-bottom: 0;
  font-size: 15px;
}

.reports {
  padding-top: 40px;
}

.photo-story {
  display: grid;
  gap: 24px;
}

.photo-story figure {
  margin: 0;
  background: var(--soft);
  overflow: hidden;
}

.photo-story img {
  height: 100%;
  object-fit: cover;
}

.photo-story.feature {
  grid-template-columns: minmax(0, 1.35fr) minmax(320px, 0.65fr);
  align-items: stretch;
  margin-bottom: 54px;
}

.photo-story.feature figure {
  min-height: 620px;
}

.caption {
  align-self: end;
  padding: 0 0 10px;
}

.caption span {
  display: block;
  margin-bottom: 16px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.analysis-points {
  display: grid;
  gap: 16px;
  margin: 22px 0;
  padding: 22px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.analysis-points.compact {
  gap: 12px;
  margin: 18px 0;
  padding: 16px 0;
}

.analysis-points div {
  display: grid;
  grid-template-columns: 118px 1fr;
  gap: 18px;
}

.analysis-points dt {
  color: var(--blue);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.analysis-points dd {
  margin: 0;
  color: #303a48;
  font-size: 15px;
}

.feature .analysis-points dd {
  font-size: 16px;
}

.caption p {
  margin-bottom: 14px;
}

.caption p[lang="en"] {
  color: #2f3a49;
  font-style: italic;
}

.story-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 34px 24px;
}

.story-grid figure {
  aspect-ratio: 4 / 3;
  margin-bottom: 22px;
}

.story-grid .tall {
  grid-row: span 2;
}

.story-grid .tall figure {
  aspect-ratio: 3 / 4;
}

.supplement {
  display: grid;
  grid-template-columns: minmax(260px, 0.8fr) minmax(360px, 1.2fr);
  gap: clamp(34px, 6vw, 80px);
  align-items: center;
  border-top: 1px solid var(--line);
}

.supplement-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.supplement-grid img {
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(0.92);
}

.certificate {
  padding-top: 40px;
  border-top: 1px solid var(--line);
}

.certificate-frame {
  margin: 0;
  padding: clamp(14px, 2vw, 24px);
  background: #f7f4fb;
  border: 1px solid #ddd2e8;
}

.certificate-frame img {
  max-width: 1040px;
  margin: 0 auto;
  box-shadow: 0 22px 70px rgba(36, 20, 51, 0.14);
}

.certificate-frame figcaption {
  max-width: 1040px;
  margin: 18px auto 0;
  color: var(--muted);
  font-size: 14px;
}

.open-access {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 34px;
  margin-bottom: 78px;
  padding-top: 58px;
  padding-bottom: 58px;
  color: #fff;
  background: var(--graphite);
}

.access-copy {
  max-width: 770px;
}

.open-access h2,
.open-access p {
  color: #fff;
}

.open-access p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.78);
}

.access-link {
  flex: 0 0 auto;
  padding: 15px 24px;
  border: 1px solid rgba(255, 255, 255, 0.46);
  font-size: 14px;
  font-weight: 800;
}

footer {
  padding: 34px clamp(22px, 4vw, 58px);
  border-top: 1px solid var(--line);
  color: var(--muted);
  text-align: center;
}

footer p {
  margin: 0;
}

@media (max-width: 1050px) {
  .role-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .role-grid article {
    min-height: auto;
  }

  .story-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 780px) {
  .site-header {
    position: absolute;
    align-items: flex-start;
  }

  .site-header nav {
    display: none;
  }

  .hero {
    min-height: 92vh;
  }

  .hero-copy {
    padding-bottom: 52px;
  }

  .summary-grid,
  .institution-card,
  .section-heading.wide,
  .photo-story.feature,
  .supplement,
  .open-access {
    grid-template-columns: 1fr;
  }

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

  .analysis-points div {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .role-grid,
  .story-grid,
  .supplement-grid {
    grid-template-columns: 1fr;
  }

  .photo-story.feature figure {
    min-height: 380px;
  }

  .panorama img {
    min-height: 340px;
  }

  .open-access {
    display: grid;
  }
}

@media (max-width: 520px) {
  h1 {
    font-size: 38px;
  }

  h2 {
    font-size: 32px;
  }

  .facts div {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .hero-meta {
    font-size: 12px;
  }

  .role-grid article {
    padding: 24px 0;
    border-left: 0;
    border-right: 0;
  }

  .role-grid {
    border-left: 0;
  }

  .institution-label {
    align-items: flex-start;
    font-size: 12px;
  }

  .spbu-seal {
    width: 42px;
    height: 42px;
  }
}