:root {
  --bg: #f7fcff;
  --surface: #ffffff;
  --surface-soft: #e8f8ff;
  --text: #153243;
  --muted: #51677a;
  --border: #c9e8f2;
  --accent: #00a8e8;
  --accent-2: #ffb703;
  --accent-3: #2dc653;
  --accent-dark: #006d77;
  --accent-soft: #d9f6ff;
  --link: #0077b6;
  --shadow: 0 18px 45px rgba(0, 119, 182, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 10% -10%, rgba(0, 168, 232, 0.18), transparent 30rem),
    radial-gradient(circle at 90% 0%, rgba(255, 183, 3, 0.18), transparent 26rem),
    radial-gradient(circle at 48% 18rem, rgba(45, 198, 83, 0.1), transparent 30rem),
    linear-gradient(180deg, #ffffff 0%, var(--bg) 36rem);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
}

a {
  color: var(--link);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

a:hover,
a:focus-visible {
  color: var(--accent-dark);
}

p,
ul,
ol {
  margin-top: 0;
}

ul,
ol {
  padding-left: 1.25rem;
}

h1,
h2,
h3 {
  margin: 0 0 0.65rem;
  color: var(--accent-dark);
  line-height: 1.15;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(2.25rem, 6vw, 5rem);
}

h2 {
  font-size: clamp(1.45rem, 3vw, 2.25rem);
}

h3 {
  font-size: 1.08rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(14px);
}

.nav {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
}

.brand {
  color: var(--accent-dark);
  font-size: 1.25rem;
  font-weight: 800;
  text-decoration: none;
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.35rem;
}

.nav-links a {
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 650;
  padding: 0.42rem 0.7rem;
  text-decoration: none;
}

.nav-links a:hover {
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.language-switch {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #ffffff;
  padding: 0.2rem;
}

.language-switch a {
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 800;
  padding: 0.28rem 0.55rem;
  text-decoration: none;
}

.language-switch a.active {
  background: var(--accent);
  color: #ffffff;
}

.hero,
.section,
.site-footer {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
}

.hero {
  padding: clamp(3rem, 8vw, 6rem) 0 2rem;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(260px, 0.65fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
}

.eyebrow {
  margin: 0 0 0.65rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lead {
  color: var(--muted);
  font-size: clamp(1.08rem, 2vw, 1.28rem);
}

.campaign-full-name {
  max-width: 760px;
  color: var(--accent-dark);
  font-size: 1.08rem;
  font-weight: 720;
}

.hero-panel,
.card,
.program-card,
.publication-card,
.team-card,
.note {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow);
}

.hero-panel {
  padding: 1.2rem;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.metric {
  border-radius: 8px;
  background: var(--surface-soft);
  padding: 0.85rem;
}

.metric strong {
  display: block;
  color: var(--accent-dark);
  font-size: 1.25rem;
  line-height: 1.1;
}

.metric span {
  color: var(--muted);
  font-size: 0.88rem;
}

.section {
  padding: 2.25rem 0;
}

.section-intro {
  max-width: 820px;
  color: var(--muted);
  font-size: 1.08rem;
}

.card {
  padding: clamp(1.1rem, 3vw, 1.6rem);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
  margin-top: 1.25rem;
}

.program-card,
.publication-card,
.team-card,
.note {
  padding: 1rem;
}

.program-card,
.publication-card {
  border-top: 4px solid var(--program-color, var(--accent));
}

.program-card p,
.publication-card p,
.team-card p,
.note p {
  margin-bottom: 0;
}

.program-tag {
  display: inline-flex;
  margin-bottom: 0.6rem;
  border-radius: 999px;
  background: var(--program-soft, var(--accent-soft));
  color: var(--program-dark, var(--accent-dark));
  padding: 0.22rem 0.55rem;
  font-size: 0.82rem;
  font-weight: 750;
}

.program-quartet {
  --program-color: #2dc653;
  --program-soft: #e4fbe9;
  --program-dark: #167a37;
}

.program-mazurka {
  --program-color: #ffb703;
  --program-soft: #fff4cf;
  --program-dark: #8a5a00;
}

.program-polka {
  --program-color: #00a8e8;
  --program-soft: #daf5ff;
  --program-dark: #006d77;
}

.program-ballad {
  --program-color: #ff5d8f;
  --program-soft: #ffe2ec;
  --program-dark: #9b1748;
}

.program-duet {
  --program-color: #2563eb;
  --program-soft: #dbeafe;
  --program-dark: #1d4ed8;
}

.program-unassigned {
  --program-color: #111827;
  --program-soft: #f3f4f6;
  --program-dark: #111827;
}

.program-card h3 {
  color: var(--program-dark, var(--accent-dark));
}

.program-full-name {
  color: var(--program-dark, var(--accent-dark));
  font-weight: 720;
  margin-bottom: 0.6rem;
}

.program-publications {
  border-top: 1px solid var(--border);
  margin-top: 0.85rem;
  padding-top: 0.75rem;
}

.program-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.visualization-link {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--program-color, var(--accent));
  border-radius: 999px;
  background: var(--program-soft, var(--accent-soft));
  color: var(--program-dark, var(--accent-dark));
  padding: 0.28rem 0.62rem;
  text-decoration: none;
}

.visualization-link:hover,
.visualization-link:focus-visible {
  background: var(--program-color, var(--accent));
  color: #ffffff;
}

.program-publications-title {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  margin-bottom: 0.4rem;
  text-transform: uppercase;
}

.program-publications ul {
  display: grid;
  gap: 0.35rem;
  list-style: none;
  margin: 0;
  padding-left: 0;
}

.program-publications li {
  color: var(--muted);
  font-size: 0.92rem;
}

.muted {
  color: var(--muted);
}

.logic-list {
  display: grid;
  gap: 0.85rem;
  padding-left: 0;
  list-style: none;
}

.logic-list li {
  border-left: 4px solid var(--accent);
  padding-left: 0.9rem;
}

.logic-figure,
.publication-figure {
  margin: 1rem 0 0;
}

.logic-figure img,
.publication-figure img {
  display: block;
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.logic-figure figcaption {
  color: var(--muted);
  font-size: 0.92rem;
  margin-top: 0.45rem;
}

.publication-figure {
  margin-top: 0.25rem;
}

.publication-card {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.publication-card time,
.publication-card .scale,
.publication-phase,
.publication-program {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 650;
}

.publication-topline,
.publication-tags,
.publication-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  justify-content: space-between;
}

.publication-phase {
  border-radius: 999px;
  background: var(--surface-soft);
  padding: 0.12rem 0.45rem;
}

.publication-tags {
  justify-content: flex-start;
}

.publication-program {
  border-left: 1px solid var(--border);
  padding-left: 0.5rem;
}

.publication-card .publication-program {
  color: var(--program-dark, var(--muted));
}

.publication-card a {
  font-weight: 760;
}

.publication-title {
  color: var(--accent-dark);
  font-weight: 720;
}

.publication-links {
  justify-content: flex-start;
  font-size: 0.88rem;
}

.flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.flow-step {
  position: relative;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  padding: 1rem;
}

.flow-step::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -0.7rem;
  width: 0.7rem;
  height: 2px;
  background: var(--border);
}

.flow-step:last-child::after {
  display: none;
}

.team-list {
  column-count: 3;
  column-gap: 2rem;
  margin: 1rem 0 0;
  padding-left: 1rem;
}

.team-list li {
  break-inside: avoid;
  margin-bottom: 0.35rem;
}

.team-etal {
  color: var(--muted);
  font-style: italic;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.2rem;
}

.button,
.pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--accent-dark);
  font-weight: 750;
  padding: 0.55rem 0.85rem;
  text-decoration: none;
}

.button {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #ffffff;
  border-color: var(--accent);
}

.button:hover {
  background: linear-gradient(135deg, var(--accent-dark), #004e64);
  color: #ffffff;
  text-decoration: none;
}

.pill:hover {
  background: var(--accent-soft);
  text-decoration: none;
}

.site-footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  padding: 1.4rem 0 2rem;
  font-size: 0.92rem;
}

.site-footer p {
  margin-bottom: 0.25rem;
}

@media (max-width: 820px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    justify-content: flex-start;
  }

  .language-switch {
    align-self: flex-start;
  }

  .hero {
    grid-template-columns: 1fr;
    padding-top: 2.5rem;
  }

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

  .flow-step::after {
    display: none;
  }

  .team-list {
    column-count: 1;
  }
}

@media (max-width: 560px) {
  body {
    font-size: 15px;
  }

  .hero,
  .section,
  .site-footer,
  .nav {
    width: min(100%, calc(100% - 1rem));
  }

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