:root {
  --bg: #f4efe6;
  --bg-accent: #dce9f2;
  --surface: rgba(255, 252, 247, 0.88);
  --surface-strong: #fffdf8;
  --border: rgba(16, 36, 63, 0.12);
  --text: #162235;
  --muted: #526276;
  --accent: #d96d2a;
  --accent-deep: #9f4c1d;
  --ink: #10243f;
  --shadow: 0 24px 60px rgba(16, 36, 63, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(217, 109, 42, 0.14), transparent 32%),
    radial-gradient(circle at top right, rgba(74, 122, 168, 0.18), transparent 28%),
    linear-gradient(180deg, var(--bg) 0%, #f8f4ec 48%, #edf3f7 100%);
  font-family: "Manrope", sans-serif;
  line-height: 1.65;
}

a {
  color: inherit;
}

.page-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 48px;
}

.site-header,
.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.site-header {
  margin-bottom: 28px;
  padding: 16px 18px;
  background: rgba(255, 252, 247, 0.7);
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--ink), #245884);
  color: #fff;
  font-family: "IBM Plex Mono", monospace;
  font-weight: 600;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-copy strong {
  font-size: 1rem;
}

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

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.site-nav a,
.site-footer a {
  color: var(--ink);
  font-weight: 600;
  text-decoration: none;
}

.site-nav a:hover,
.site-footer a:hover {
  color: var(--accent-deep);
}

.hero {
  margin-bottom: 20px;
  padding: 28px;
  border-radius: 28px;
  background: linear-gradient(135deg, rgba(16, 36, 63, 0.96), rgba(36, 88, 132, 0.9));
  color: #f8f5ee;
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0 0 10px;
  color: rgba(248, 245, 238, 0.78);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0 0 10px;
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.05;
}

.hero-summary {
  margin: 0;
  max-width: 760px;
  font-size: 1.05rem;
  color: rgba(248, 245, 238, 0.9);
}

.content-card {
  padding: 30px;
  border: 1px solid var(--border);
  border-radius: 28px;
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.content-card h1,
.content-card h2,
.content-card h3 {
  color: var(--ink);
  line-height: 1.15;
}

.content-card h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
}

.content-card h2 {
  margin-top: 2.4rem;
  font-size: clamp(1.4rem, 3vw, 2rem);
}

.content-card h3 {
  margin-top: 1.6rem;
  font-size: 1.15rem;
}

.content-card p,
.content-card li {
  color: var(--text);
}

.content-card code,
.content-card pre {
  font-family: "IBM Plex Mono", monospace;
}

.content-card code {
  padding: 0.12rem 0.36rem;
  border-radius: 8px;
  background: rgba(16, 36, 63, 0.08);
}

.content-card pre {
  overflow-x: auto;
  padding: 18px;
  border-radius: 18px;
  background: #0f2038;
  color: #f7f4ee;
}

.content-card .mermaid {
  overflow-x: auto;
  margin: 1.5rem 0;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--surface-strong);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.content-card table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  overflow: hidden;
  border-radius: 18px;
  background: var(--surface-strong);
}

.content-card th,
.content-card td {
  padding: 12px 14px;
  border: 1px solid rgba(16, 36, 63, 0.08);
  text-align: left;
  vertical-align: top;
}

.content-card blockquote {
  margin: 1.5rem 0;
  padding: 12px 18px;
  border-left: 4px solid var(--accent);
  background: rgba(217, 109, 42, 0.08);
  color: var(--ink);
}

.doc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 1.5rem;
}

.doc-card {
  display: block;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--surface-strong);
  text-decoration: none;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    box-shadow 160ms ease;
}

.doc-card:hover {
  transform: translateY(-3px);
  border-color: rgba(217, 109, 42, 0.45);
  box-shadow: 0 18px 42px rgba(16, 36, 63, 0.1);
}

.doc-card strong {
  display: block;
  margin-bottom: 6px;
  color: var(--ink);
  font-size: 1.02rem;
}

.doc-card span {
  color: var(--muted);
}

.site-footer {
  margin-top: 18px;
  padding: 16px 6px;
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 720px) {
  .page-shell {
    width: min(100% - 20px, 1120px);
    padding-top: 14px;
  }

  .site-header,
  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }

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