:root {
  --bg: #f4efe4;
  --bg-accent: #e4dccb;
  --ink: #1f1f19;
  --muted: #5b5b4c;
  --line: rgba(31, 31, 25, 0.14);
  --card: rgba(255, 251, 245, 0.86);
  --brand: #0b6e4f;
  --brand-soft: #d9efe7;
  --shadow: 0 24px 80px rgba(38, 33, 20, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(11, 110, 79, 0.10), transparent 28%),
    radial-gradient(circle at top right, rgba(169, 103, 27, 0.12), transparent 24%),
    linear-gradient(180deg, var(--bg) 0%, #fbf7ef 100%);
  font-family: "IBM Plex Sans", sans-serif;
  line-height: 1.7;
}

.page-shell {
  width: min(1100px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0 4rem;
}

.hero {
  padding: 4rem 0 2rem;
}

.hero__eyebrow {
  display: inline-block;
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.55);
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero__title {
  margin: 1rem 0 0;
  font-family: "IBM Plex Serif", serif;
  font-size: clamp(2.5rem, 6vw, 4.8rem);
  line-height: 0.95;
}

.hero__description {
  max-width: 44rem;
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.content-card {
  padding: clamp(1.25rem, 4vw, 3rem);
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--card);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.content-card h1,
.content-card h2,
.content-card h3,
.content-card h4 {
  font-family: "IBM Plex Serif", serif;
  line-height: 1.15;
  scroll-margin-top: 1.5rem;
}

.content-card h1 {
  font-size: clamp(2rem, 4vw, 3rem);
}

.content-card h2 {
  margin-top: 2.8rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}

.content-card a {
  color: var(--brand);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.16em;
}

.content-card p code,
.content-card li code,
.content-card td code,
.content-card th code {
  padding: 0.12rem 0.38rem;
  border-radius: 0.45rem;
  background: var(--brand-soft);
  font-size: 0.94em;
}

.content-card pre {
  overflow-x: auto;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #171711;
  color: #f9f6ef;
}

.content-card pre code {
  padding: 0;
  background: transparent;
  color: inherit;
}

.content-card img {
  max-width: 100%;
  height: auto;
  border-radius: 18px;
}

.content-card .figure-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 1.4rem 0 2rem;
}

.content-card .figure-card {
  flex: 1 1 280px;
  min-width: min(100%, 280px);
  margin: 0;
  padding: 0.85rem;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.62);
  box-shadow: 0 10px 30px rgba(38, 33, 20, 0.08);
}

.content-card .figure-card img {
  display: block;
  width: 100%;
  border: 1px solid rgba(31, 31, 25, 0.08);
}

.content-card .figure-card figcaption {
  margin-top: 0.85rem;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.55;
}

.content-card .figure-card strong {
  display: block;
  margin-bottom: 0.2rem;
  color: var(--ink);
}

.content-card blockquote {
  margin: 1.5rem 0;
  padding: 0.8rem 1rem;
  border-left: 4px solid var(--brand);
  background: rgba(11, 110, 79, 0.08);
}

.content-card table {
  display: block;
  overflow-x: auto;
  width: 100%;
  border-collapse: collapse;
}

.content-card th,
.content-card td {
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--line);
}

@media (max-width: 700px) {
  .page-shell {
    width: min(100% - 1rem, 1100px);
    padding-top: 1rem;
  }

  .hero {
    padding-top: 2rem;
  }

  .content-card {
    border-radius: 22px;
  }

  .content-card .figure-card {
    flex-basis: 100%;
  }
}