:root {
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.7;
  color: #1f2937;
  background: #ffffff;
}

.page {
  max-width: 860px;
  margin: 0 auto;
  padding: 56px 20px 80px;
}

.hero {
  margin-bottom: 42px;
  border-bottom: 1px solid #e5e7eb;
  padding-bottom: 28px;
}

.eyebrow {
  margin: 0;
  font-size: 0.84rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #6b7280;
}

h1 {
  margin: 10px 0 12px;
  font-size: clamp(2rem, 3.6vw, 2.8rem);
  line-height: 1.2;
  color: #111827;
}

h2 {
  margin: 34px 0 10px;
  font-size: 1.5rem;
  line-height: 1.35;
  color: #111827;
}

.meta {
  margin: 2px 0;
  color: #4b5563;
  font-size: 0.96rem;
}

.lead {
  margin-top: 16px;
  font-size: 1.15rem;
  color: #111827;
}

.equation {
  margin-top: 8px;
  padding: 10px 12px;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  background: #f9fafb;
  font-size: 0.96rem;
}

p,
ol,
ul {
  margin: 0 0 12px;
}

a {
  color: #1d4ed8;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

figure {
  margin: 18px 0 16px;
}

img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  border: 1px solid #e5e7eb;
}

figcaption {
  margin-top: 8px;
  font-size: 0.9rem;
  color: #6b7280;
}

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

.table-wrap {
  overflow-x: auto;
  margin: 12px 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}

caption {
  text-align: left;
  margin-bottom: 8px;
  color: #4b5563;
  font-size: 0.95rem;
}

th,
td {
  border: 1px solid #e5e7eb;
  padding: 8px 10px;
  text-align: left;
  font-size: 0.92rem;
}

th {
  background: #f9fafb;
  color: #111827;
}

@media (max-width: 760px) {
  .page {
    padding-top: 42px;
  }

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