:root {
  color-scheme: light;
  --bg-top: #f4f8ff;
  --bg-bottom: #ffffff;
  --ink: #162035;
  --muted: #56627a;
  --line: rgba(22, 32, 53, 0.1);
  --line-strong: rgba(22, 32, 53, 0.16);
  --surface: rgba(255, 255, 255, 0.82);
  --surface-strong: rgba(255, 255, 255, 0.94);
  --brand: #2f67d8;
  --brand-soft: rgba(47, 103, 216, 0.12);
  --brand-soft-strong: rgba(47, 103, 216, 0.18);
  --warn: #a85a12;
  --warn-bg: rgba(168, 90, 18, 0.1);
  --ok: #1b7f4a;
  --shadow: 0 18px 50px rgba(27, 43, 78, 0.08);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --content-width: 1040px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Avenir Next", "Segoe UI", "Helvetica Neue", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(47, 103, 216, 0.14), transparent 28%),
    linear-gradient(180deg, var(--bg-top), var(--bg-bottom));
}

a {
  color: var(--brand);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.shell {
  width: min(calc(100% - 32px), var(--content-width));
  margin: 0 auto;
}

.topbar {
  padding: 20px 0 10px;
}

.topbar .shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  text-decoration: none;
}

.brand-mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, #2f67d8, #8db5ff);
  color: #fff;
  font-size: 20px;
  box-shadow: var(--shadow);
}

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

.brand-title {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.brand-subtitle {
  color: var(--muted);
  font-size: 12px;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.nav a {
  padding: 10px 14px;
  border-radius: 999px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid transparent;
  text-decoration: none;
}

.nav a.is-active,
.nav a:hover {
  color: var(--ink);
  border-color: var(--line);
  background: var(--surface);
}

.hero {
  padding: 22px 0 30px;
}

.hero-card,
.panel,
.feature-card,
.list-card,
.callout,
.table-card {
  border: 1px solid var(--line);
  background: var(--surface);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.hero-card {
  border-radius: var(--radius-xl);
  padding: 34px;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.9fr);
  gap: 26px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  padding: 7px 12px;
  background: var(--brand-soft);
  color: var(--brand);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  letter-spacing: -0.03em;
}

h1 {
  margin-top: 16px;
  font-size: clamp(2.2rem, 4vw, 4rem);
  line-height: 0.98;
}

h2 {
  font-size: clamp(1.45rem, 2vw, 2rem);
}

h3 {
  font-size: 1.05rem;
}

.lede,
.hero-card p,
.section-copy,
.muted,
li,
td,
th {
  color: var(--muted);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.button,
.button-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  border: 1px solid transparent;
}

.button {
  color: #fff;
  background: linear-gradient(135deg, #2f67d8, #2456be);
}

.button-secondary {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.72);
  border-color: var(--line);
}

.stack {
  display: grid;
  gap: 18px;
}

.stats {
  display: grid;
  gap: 14px;
}

.stat {
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--surface-strong);
  padding: 18px;
}

.stat-label {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-value {
  margin-top: 8px;
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--ink);
}

.main-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(12, 1fr);
  padding-bottom: 50px;
}

.panel {
  border-radius: var(--radius-xl);
  padding: 28px;
  grid-column: span 12;
}

.panel.tight {
  padding: 22px;
}

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

.feature-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 18px;
}

.feature-card {
  border-radius: var(--radius-lg);
  padding: 18px;
}

.feature-card strong {
  display: block;
  margin-bottom: 7px;
  color: var(--ink);
  font-size: 1rem;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  color: var(--ink);
  font-size: 13px;
  font-weight: 600;
}

.list-card,
.table-card,
.callout {
  border-radius: var(--radius-lg);
}

.list-card {
  padding: 18px 20px;
}

.list-card ul,
.panel ul,
.panel ol {
  margin: 12px 0 0;
  padding-left: 18px;
}

.list-card li + li,
.panel li + li {
  margin-top: 8px;
}

.callout {
  padding: 16px 18px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.8));
}

.callout.warn {
  border-color: rgba(168, 90, 18, 0.22);
  background: linear-gradient(180deg, rgba(255, 248, 240, 0.96), rgba(255, 244, 234, 0.88));
}

.callout.ok {
  border-color: rgba(27, 127, 74, 0.18);
  background: linear-gradient(180deg, rgba(243, 252, 247, 0.96), rgba(239, 250, 244, 0.88));
}

.callout-title {
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 6px;
}

.contact-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 18px;
}

.contact-card {
  border-radius: var(--radius-lg);
  padding: 18px;
  border: 1px solid var(--line);
  background: var(--surface-strong);
}

.contact-card span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.contact-card strong {
  color: var(--ink);
  font-size: 1rem;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  text-align: left;
  padding: 12px 0;
  vertical-align: top;
}

thead th {
  color: var(--ink);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

tbody tr + tr td,
tbody tr + tr th {
  border-top: 1px solid var(--line);
}

code,
.code {
  font-family: ui-monospace, "SFMono-Regular", "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.93em;
}

.footer {
  padding: 24px 0 40px;
}

.footer .shell {
  color: var(--muted);
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

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

.kicker {
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 12px;
  font-weight: 700;
}

.placeholder {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 999px;
  background: var(--warn-bg);
  color: var(--warn);
  font-weight: 700;
  font-size: 12px;
}

.repo-link {
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 920px) {
  .hero-card,
  .panel.two-up,
  .feature-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .topbar .shell,
  .section-header,
  .footer .shell {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-card,
  .panel {
    padding: 22px;
  }

  .shell {
    width: min(calc(100% - 20px), var(--content-width));
  }
}