/* ── Page shell ── */
.page-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding-bottom: 72px;
}

/* ── Topbar ── */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
  margin-bottom: 24px;
  backdrop-filter: blur(16px);
}

.brand,
.nav a,
.quick-links a {
  text-decoration: none;
}

.brand {
  font-family: "Instrument Serif", serif;
  font-size: 1.9rem;
}

.nav {
  display: flex;
  gap: 18px;
  font-size: 0.95rem;
  color: var(--muted);
}

/* ── Section spacing ── */
.hero,
.section,
.intro-grid {
  margin-bottom: 28px;
}

/* ── Hero layout ── */
.hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: start;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
}

.hero-metrics dt {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--warm);
  margin-bottom: 8px;
}

.hero-metrics dd {
  margin: 0;
  font-weight: 700;
  line-height: 1.45;
}

/* ── Section layout ── */
.section {
  padding: 28px;
  background: rgba(255, 250, 244, 0.58);
  border: 1px solid var(--line);
  border-radius: 32px;
}

.section-heading {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-end;
  margin-bottom: 22px;
}



.section-heading-compact {
  margin-bottom: 16px;
}

.section-heading-compact h2 {
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  max-width: 22ch;
}

/* ── Grid systems ── */
.intro-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.paper-grid,
.results-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  align-items: start;
}

.results-layout-secondary {
  margin-top: 18px;
}

/* ── Task / scenario rows ── */
.task-suite,
.scenario-suite {
  display: grid;
  gap: 18px;
}

.task-row,
.scenario-row {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 18px;
  align-items: stretch;
}

.task-media-pair,
.inline-media-grid {
  display: grid;
  gap: 14px;
}

.task-media-pair,
.inline-media-grid-two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.inline-media-grid-three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 14px;
}

.inline-media-grid-recording {
  grid-template-columns: 0.8fr 1.4fr 0.8fr;
}

@media (max-width: 1080px) {
  .inline-media-grid-recording {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .inline-media-grid-recording .media-card:nth-child(2) {
    grid-column: 1 / -1;
  }
}

/* ── Pipeline split layout ── */
.feature-split .split-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  align-items: start;
}

.text-panel {
  display: grid;
  gap: 14px;
  align-content: start;
}

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

.pipeline-steps {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  align-content: start;
}

/* ── Evaluation / protocol grids ── */
.protocol-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.protocol-card-wide {
  grid-column: span 4;
}

.evaluation-example {
  margin-top: 18px;
}

.example-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.example-card-wide {
  grid-column: span 2;
}

/* ── Resource grid ── */
.resource-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

/* ── Recovery grid ── */
.recovery-section {
  margin-top: 24px;
}

.recovery-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

/* ── Support panel ── */
.support-panel {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 22px;
  align-items: center;
}

/* ── Misc layout ── */
.visual-panel {
  align-self: start;
}

.visual-panel-tight {
  padding: 18px;
}

.visual-panel-tight img,
.hero-media img {
  width: 100%;
  height: auto;
}

.support-panel img {
  border-radius: 18px;
  border: 1px solid rgba(31, 41, 55, 0.08);
}

/* ── Old pipeline (5-column) ── */
.pipeline {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

/* ── Responsive ── */
@media (max-width: 1080px) {
  .pipeline-steps,
  .recovery-grid,
  .task-media-pair,
  .inline-media-grid-three,
  .example-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .task-row,
  .scenario-row {
    grid-template-columns: 1fr;
  }

  .protocol-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .protocol-card-wide {
    grid-column: span 2;
  }

  .pipeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .page-shell {
    width: min(100% - 20px, 1180px);
  }

  .topbar,
  .section-heading,
  .nav,
  .hero-metrics,
  .intro-grid,
  .paper-grid,
  .results-layout,
  .task-grid,
  .resource-grid,
  .protocol-grid,
  .pipeline,
  .pipeline-steps,
  .recovery-grid,
  .task-media-pair,
  .inline-media-grid,
  .example-grid {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: flex-start;
  }

  .topbar {
    position: static;
  }

  .nav {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
  }

  .hero-copy,
  .hero-media,
  .section,
  .visual-panel,
  .text-panel,
  .support-panel {
    padding: 20px;
  }

  .protocol-card-wide {
    grid-column: span 1;
  }

  .example-card-wide {
    grid-column: span 1;
  }

  .media-frame video {
    min-height: 280px;
  }

  .support-panel img {
    width: 100%;
  }
}