:root {
  --bg: #f4efe5;
  --panel: rgba(255, 250, 242, 0.82);
  --panel-strong: rgba(255, 248, 238, 0.96);
  --ink: #26170e;
  --muted: #67503f;
  --line: rgba(76, 47, 24, 0.14);
  --accent: #a44d2f;
  --accent-soft: #f0c7b1;
  --accent-alt: #264653;
  --shadow: 0 24px 60px rgba(70, 42, 20, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(224, 163, 92, 0.22), transparent 28%),
    radial-gradient(circle at top right, rgba(98, 144, 124, 0.18), transparent 24%),
    linear-gradient(180deg, #fbf7f0 0%, #efe4d5 100%);
  font-family: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
}

.page-shell {
  width: min(1180px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 32px 0 80px;
}

.hero,
.stage-panel {
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(12px);
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.hero {
  display: grid;
  gap: 24px;
  grid-template-columns: 1.6fr 0.9fr;
  padding: 32px;
}

.eyebrow {
  margin: 0 0 8px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.76rem;
  color: var(--accent);
  font-weight: 700;
}

h1,
h2,
h3 {
  margin: 0;
  font-weight: 700;
}

h1 {
  font-size: clamp(2.2rem, 4vw, 4.4rem);
  line-height: 0.95;
  max-width: 12ch;
}

h2 {
  font-size: clamp(1.4rem, 2.8vw, 2.2rem);
}

.lede {
  max-width: 58ch;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.hero-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
  max-width: 760px;
}

.hero-pills span {
  flex: 0 0 auto;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 248, 238, 0.88);
  border: 1px solid var(--line);
  color: var(--accent-alt);
  font-size: 0.9rem;
}

.hero-meta {
  display: grid;
  gap: 16px;
  align-content: start;
}

.meta-card,
.step-card,
.data-card,
.plot-card,
.report-card {
  background: var(--panel-strong);
  border: 1px solid var(--line);
  border-radius: 22px;
}

.meta-card {
  padding: 18px 20px;
}

.meta-label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.stage-panel {
  margin-top: 22px;
  padding: 28px;
}

.section-heading {
  margin-bottom: 18px;
}

.steps-grid,
.preview-grid,
.plot-grid,
.metrics-band {
  display: grid;
  gap: 18px;
}

.steps-grid {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.step-card {
  padding: 18px;
}

.step-number {
  display: inline-flex;
  width: 34px;
  height: 34px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--accent);
  color: #fff8f0;
  font-size: 0.88rem;
  margin-bottom: 14px;
}

.step-card p,
.plot-card p,
.report-card p {
  color: var(--muted);
  line-height: 1.6;
}

.preview-grid {
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.intro-band {
  background:
    linear-gradient(135deg, rgba(255, 249, 241, 0.94), rgba(243, 232, 217, 0.78)),
    var(--panel);
}

.intro-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.intro-card {
  padding: 20px;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: rgba(255, 251, 245, 0.94);
}

.intro-card p {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.65;
}

.data-card,
.plot-card,
.report-card {
  overflow: hidden;
}

.card-header {
  padding: 18px 20px 0;
}

.table-shell {
  overflow-x: auto;
  padding: 14px 18px 20px;
}

.artifact-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.artifact-table th,
.artifact-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  white-space: nowrap;
}

.artifact-table th {
  color: var(--accent-alt);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.metrics-band {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin-bottom: 18px;
}

.metric-card {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(255, 249, 241, 0.98), rgba(244, 228, 210, 0.74));
}

.metric-card strong {
  display: block;
  font-size: 1.55rem;
  margin-top: 8px;
}

.metric-card span {
  color: var(--muted);
  font-size: 0.9rem;
}

.plot-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.architecture-panel {
  background:
    radial-gradient(circle at top left, rgba(163, 77, 47, 0.08), transparent 26%),
    linear-gradient(180deg, rgba(255, 250, 244, 0.96), rgba(247, 237, 224, 0.82));
}

.architecture-flow {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 44px minmax(0, 1fr) 44px minmax(0, 1fr) 44px minmax(0, 1fr) 44px minmax(0, 1fr);
  gap: 6px;
  align-items: center;
}

.flow-node {
  min-height: 150px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(255, 251, 244, 0.95);
}

.flow-node span {
  display: inline-flex;
  width: 30px;
  height: 30px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--accent-alt);
  color: #fff;
  font-size: 0.82rem;
  margin-bottom: 12px;
}

.flow-node strong {
  display: block;
  margin-bottom: 8px;
}

.flow-node p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.flow-arrow {
  text-align: center;
  font-size: 1.55rem;
  color: var(--accent);
}

.plot-card img {
  width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
  background: #fff;
}

.plot-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.plot-card header {
  padding: 18px 20px;
}

.plot-card .plot-media {
  height: 230px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #fff;
}

.plot-card footer {
  padding: 18px 20px;
}

.plot-card footer {
  color: var(--muted);
  font-size: 0.94rem;
}

.report-section .section-heading {
  margin-bottom: 14px;
}

.report-tabs {
  margin-bottom: 18px;
}

.report-layout {
  display: grid;
  gap: 18px;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: stretch;
}

.report-layout .report-card {
  height: 100%;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}

.tab-button {
  border: 1px solid var(--line);
  background: #fff8f1;
  color: var(--ink);
  padding: 10px 14px;
  border-radius: 999px;
  cursor: pointer;
  font: inherit;
}

.tab-button.active {
  background: var(--accent);
  color: #fff8f0;
  border-color: var(--accent);
}

.report-card {
  padding: 20px;
}

.note-text {
  margin: 16px 0 0;
  line-height: 1.7;
  font-size: 0.98rem;
  color: #35231a;
}

.markdown-note > :first-child {
  margin-top: 0;
}

.markdown-note h1,
.markdown-note h2,
.markdown-note h3,
.markdown-note h4 {
  margin: 1rem 0 0.45rem;
  line-height: 1.2;
}

.markdown-note p {
  margin: 0 0 0.85rem;
}

.markdown-note ul {
  margin: 0 0 1rem;
  padding-left: 1.2rem;
}

.markdown-note li {
  margin: 0.28rem 0;
}

.markdown-note strong {
  color: #1f130d;
}

.empty-state {
  padding: 18px;
  border: 1px dashed var(--line);
  border-radius: 18px;
  color: var(--muted);
  background: rgba(255, 250, 242, 0.72);
}

.showcase-footer {
  padding: 26px 10px 0;
  text-align: center;
  color: var(--muted);
  line-height: 1.7;
}

.footer-signoff {
  margin-top: 10px;
  color: var(--accent);
  font-size: 0.95rem;
  letter-spacing: 0.04em;
}

@media (max-width: 900px) {
  .hero,
  .report-layout {
    grid-template-columns: 1fr;
  }

  .page-shell {
    width: min(100vw - 20px, 1180px);
    padding-top: 18px;
  }

  .hero,
  .stage-panel {
    padding: 22px;
    border-radius: 22px;
  }

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

  .flow-node {
    min-height: auto;
  }

  .flow-arrow {
    transform: rotate(90deg);
  }

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

@media (max-width: 640px) {
  .plot-grid {
    grid-template-columns: 1fr;
  }

  .plot-card .plot-media {
    height: auto;
    min-height: 180px;
  }
}