body.page-math {
  padding: 0;
}

body.page-math .layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  min-height: 100vh;
}

body.page-math aside {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 24px 18px;
  border-right: 1px solid var(--line);
  background: var(--panel);
  overflow-y: auto;
}

body.page-math aside h1 {
  margin: 0 0 8px;
  font-size: 1.15rem;
}

body.page-math aside p {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 0.9rem;
}

body.page-math aside nav a {
  display: block;
  padding: 8px 10px;
  margin: 3px 0;
  border-radius: 9px;
  color: var(--text);
  text-decoration: none;
  font-size: 0.93rem;
}

body.page-math aside nav a:hover,
body.page-math aside nav a:focus-visible {
  background: var(--accent-soft);
  color: var(--accent);
  outline: none;
}

body.page-math main {
  width: min(1100px, calc(100% - 40px));
  margin: 0 auto;
  padding: 42px 0 80px;
}

body.page-math .hero {
  margin-bottom: 26px;
}

body.page-math .hero h2 {
  margin: 0 0 8px;
  font-size: clamp(1.9rem, 5vw, 3.2rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

body.page-math .hero p {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

body.page-math section {
  scroll-margin-top: 90px;
  margin: 34px 0;
}

body.page-math section h3 {
  margin: 0 0 12px;
  font-size: 1.4rem;
}

body.page-math .table-card {
  overflow-x: auto;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

body.page-math table {
  min-width: 760px;
}

body.page-math th,
body.page-math td {
  padding: 13px 15px;
}

body.page-math th {
  position: sticky;
  top: 0;
  background: var(--panel);
}

body.page-math .symbol {
  width: 122px;
  text-align: center;
  font-family: "STIX Two Math", "Cambria Math", "Noto Sans Math", serif;
  font-size: 1.2rem;
  white-space: nowrap;
}

body.page-math code {
  background: var(--code);
  border-radius: 6px;
  padding: 0.12rem 0.35rem;
  font-size: 0.92em;
}

body.page-math math {
  font-size: 1.05em;
}

body.page-math math[display="inline"] {
  margin: 0;
  font-size: 1.05em;
  vertical-align: -0.08em;
}

body.page-math .note {
  padding: 16px 18px;
  border-left: 4px solid var(--accent);
  border-radius: 10px;
  background: var(--accent-soft);
  margin: 18px 0;
}

body.page-math .math-block {
  display: block;
  overflow-x: auto;
  margin-top: 16px;
  padding: 18px 14px;
  text-align: center;
  font-size: 1.1rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

body.page-math .math-block math {
  margin: 0.3rem auto;
  font-size: 1.2rem;
}

body.page-math .math-block > p {
  width: 100%;
}

body.page-math .formula-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}

body.page-math .formula-card {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
}

body.page-math .formula-card h4 {
  margin: 0 0 10px;
  font-size: 1rem;
}

body.page-math .formula-card p {
  margin: 0;
  color: var(--muted);
}

body.page-math .formula-list {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 8px;
}

body.page-math .exercise-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px;
}

body.page-math .exercise-card {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
}

body.page-math .exercise-card h4 {
  margin: 0 0 10px;
  font-size: 1rem;
}

body.page-math .exercise-card p {
  margin: 0 0 10px;
  color: var(--text);
}

body.page-math details {
  border-top: 1px solid var(--line);
  padding-top: 10px;
}

body.page-math summary {
  cursor: pointer;
  list-style: none;
  font-weight: 650;
  color: var(--accent);
}

body.page-math summary::-webkit-details-marker {
  display: none;
}

body.page-math .exercise-solution {
  margin-top: 10px;
  padding: 12px 14px;
  border-radius: var(--radius);
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 18%, var(--line));
}

body.page-math .exercise-solution p {
  margin: 0 0 8px;
  color: var(--text);
}

body.page-math .exercise-solution p:last-child {
  margin-bottom: 0;
}

body.page-polynomials .ruffini-card {
  max-width: 700px;
  margin: 18px auto;
}

body.page-polynomials .ruffini-table {
  min-width: 520px;
  text-align: center;
}

body.page-polynomials .ruffini-table th {
  width: 130px;
  text-align: left;
}

body.page-polynomials .ruffini-table tr:last-child th,
body.page-polynomials .ruffini-table tr:last-child td {
  border-top: 2px solid var(--text);
  font-weight: 700;
}

body.page-polynomials .strategy-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: strategy;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

body.page-polynomials .strategy-list li {
  display: grid;
  grid-template-columns: minmax(150px, 0.35fr) 1fr;
  gap: 18px;
  padding: 14px 18px;
  counter-increment: strategy;
}

body.page-polynomials .strategy-list li + li {
  border-top: 1px solid var(--line);
}

body.page-polynomials .strategy-list strong::before {
  content: counter(strategy) ". ";
  color: var(--accent);
}

body.page-polynomials .strategy-list span {
  color: var(--muted);
}

body.page-functions .concept-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 14px;
  margin-top: 20px;
}

body.page-functions .concept-figure {
  margin: 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

body.page-functions .concept-diagram,
body.page-functions .composition-diagram {
  display: block;
  width: 100%;
  height: auto;
  color: var(--text);
}

body.page-functions .diagram-set {
  fill: var(--panel-alt);
  stroke: var(--muted);
  stroke-width: 1.5;
}

body.page-functions .diagram-arrow {
  stroke: currentColor;
  stroke-width: 1.6;
}

body.page-functions .diagram-composed-arrow {
  fill: none;
  stroke: var(--accent);
  stroke-width: 2.2;
  stroke-dasharray: 7 6;
}

body.page-functions .diagram-arrowhead {
  fill: currentColor;
}

body.page-functions .diagram-accent-arrowhead {
  fill: var(--accent);
}

body.page-functions .diagram-domain-dot {
  fill: var(--text);
  stroke: var(--panel);
  stroke-width: 2;
}

body.page-functions .diagram-codomain-dot {
  fill: var(--accent);
  stroke: var(--panel);
  stroke-width: 2;
}

body.page-functions .diagram-unused-dot,
body.page-functions .diagram-shared-dot {
  fill: #c2413b;
  stroke: var(--panel);
  stroke-width: 2;
}

body.page-functions .diagram-set-label,
body.page-functions .diagram-point-label,
body.page-functions .diagram-arrow-label,
body.page-functions .diagram-accent-label {
  fill: var(--text);
  font-family: Georgia, "Times New Roman", serif;
}

body.page-functions .diagram-set-label {
  font-size: 17px;
  font-weight: 700;
  text-anchor: middle;
}

body.page-functions .diagram-point-label {
  font-size: 18px;
  font-style: italic;
  text-anchor: middle;
}

body.page-functions .diagram-arrow-label {
  font-size: 19px;
  font-style: italic;
  text-anchor: middle;
}

body.page-functions .diagram-accent-label {
  fill: var(--accent);
  font-size: 19px;
  font-weight: 700;
  text-anchor: middle;
}

body.page-functions .concept-figure figcaption {
  display: grid;
  gap: 3px;
  padding: 10px 4px 2px;
  border-top: 1px solid var(--line);
}

body.page-functions .concept-figure figcaption span {
  color: var(--muted);
  font-size: 0.9rem;
}

body.page-functions .diagram-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.86rem;
}

body.page-functions .diagram-legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

body.page-functions .legend-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
}

body.page-functions .legend-dot--domain {
  background: var(--text);
}

body.page-functions .legend-dot--codomain {
  background: var(--accent);
}

body.page-functions .legend-dot--warning {
  background: #c2413b;
}

body.page-functions .concept-figure--wide {
  margin: 20px 0;
  overflow-x: auto;
}

body.page-functions .composition-diagram {
  min-width: 680px;
}

@media (max-width: 850px) {
  body.page-math .layout {
    display: block;
  }

  body.page-math aside {
    position: static;
    width: auto;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  body.page-math aside nav {
    display: flex;
    gap: 6px;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  body.page-math aside nav a {
    white-space: nowrap;
  }

  body.page-math main {
    width: min(100% - 24px, 1100px);
    padding-top: 28px;
  }
}

@media (max-width: 600px) {
  body.page-math {
    padding: 0;
  }

  body.page-math table {
    min-width: 640px;
  }

  body.page-polynomials .strategy-list li {
    grid-template-columns: 1fr;
    gap: 3px;
  }
}

@media print {
  body.page-math {
    padding: 0;
    background: #fff;
  }

  body.page-math aside {
    display: none;
  }

  body.page-math .layout {
    display: block;
  }

  body.page-math main {
    width: 100%;
    padding: 0;
  }

  body.page-math section {
    break-inside: avoid;
  }

  body.page-math .table-card,
  body.page-math .formula-card,
  body.page-math .math-block {
    box-shadow: none;
  }
}