:root {
  --bg: #eef3ea;
  --panel: #fffef8;
  --panel-edge: #d8dfd1;
  --text: #17301f;
  --muted: #5c6e61;
  --accent: #246b45;
  --accent-strong: #17462e;
  --accent-soft: #dcecdf;
  --shadow: 0 18px 50px rgba(23, 48, 31, 0.08);
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 64px;
}

* {
  box-sizing: border-box;
}

.author-link {
  color: var(--accent);
  text-decoration: underline;
}

.nav-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.nav-pills a {
  display: inline-block;
  text-decoration: none;
  color: var(--accent);
  font-size: 0.92rem;
  font-weight: 700;
  padding: 10px 22px;
  border: 1px solid var(--panel-edge);
  border-radius: 12px;
  background: linear-gradient(180deg, #fffef9 0%, #f7faf5 100%);
  box-shadow: 0 2px 6px rgba(23, 48, 31, 0.06);
  transition: transform 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.nav-pills a:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(36, 107, 69, 0.18);
}

body {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(36, 107, 69, 0.14), transparent 34%),
    linear-gradient(180deg, #f7fbf5 0%, var(--bg) 100%);
  min-height: 100vh;
}

.page {
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0 64px;
}

.hero {
  margin-bottom: 24px;
}

.eyebrow {
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.8rem;
  color: var(--accent);
}

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

h1 {
  font-size: clamp(2rem, 5vw, 3.6rem);
  line-height: 1.02;
  margin-bottom: 12px;
}

.intro {
  max-width: 760px;
  font-size: 1.05rem;
  color: var(--muted);
  line-height: 1.6;
}

.citation {
  margin-bottom: 0;
  max-width: 760px;
  color: var(--accent);
  font-size: 0.98rem;
  line-height: 1.5;
}

.panel {
  background: rgba(255, 254, 248, 0.92);
  border: 1px solid var(--panel-edge);
  border-radius: 20px;
  box-shadow: var(--shadow);
  padding: 24px;
  margin-top: 20px;
  backdrop-filter: blur(8px);
}

.controls-header,
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 18px;
}

.controls-header p,
.section-head p {
  color: var(--muted);
  max-width: 540px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.sample-figure {
  margin: 0;
  text-align: center;
}

.sample-figure img {
  max-width: 100%;
  border-radius: 14px;
}

.sample-figure figcaption {
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

.overview-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.overview-card {
  padding: 18px;
  border: 1px solid var(--panel-edge);
  border-radius: 16px;
  background: linear-gradient(180deg, #fffef9 0%, #f7faf5 100%);
}

.overview-card h3 {
  margin-bottom: 10px;
}

.overview-card p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.6;
}

.overview-note {
  margin: 18px 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field span {
  font-weight: 700;
}

input,
select,
button {
  width: 100%;
  border-radius: 12px;
  border: 1px solid #bfd0c1;
  padding: 12px 14px;
  font: inherit;
}

input,
select {
  background: #fff;
}

button {
  width: auto;
  min-width: 190px;
  background: var(--accent);
  color: #fff;
  border: 0;
  cursor: pointer;
  transition: transform 160ms ease, background 160ms ease;
}

button:hover {
  background: var(--accent-strong);
  transform: translateY(-1px);
}

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.status {
  margin: 16px 0 0;
  min-height: 24px;
  color: var(--muted);
}

.chart-wrap {
  position: relative;
  min-height: 360px;
}

.table-wrap {
  overflow: auto;
  border: 1px solid var(--panel-edge);
  border-radius: 14px;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}

th,
td {
  padding: 12px 14px;
  border-bottom: 1px solid #ebefe8;
  text-align: left;
  white-space: nowrap;
}

thead {
  background: var(--accent-soft);
}

tbody tr:nth-child(even) {
  background: #fbfcf8;
}

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

@media (max-width: 760px) {
  .page {
    width: min(100% - 20px, 1080px);
    padding-top: 28px;
  }

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

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

  .controls-header,
  .section-head {
    flex-direction: column;
  }

  button {
    width: 100%;
  }
}