:root {
  --bg: #f7fbff;
  --surface: #ffffff;
  --surface-strong: #ffffff;
  --text: #1a1d24;
  --muted: #6d7687;
  --line: rgba(10, 132, 255, 0.14);
  --brand: #0a84ff;
  --brand-dark: #0066d6;
  --brand-soft: rgba(10, 132, 255, 0.1);
  --shadow: 0 12px 28px rgba(15, 50, 100, 0.08);
  --radius-lg: 20px;
  --radius-md: 14px;
  --content-width: 1120px;
  --font-display: "Avenir Next", "Segoe UI", sans-serif;
  --font-body: "Avenir Next", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: var(--font-body);
  background:
    radial-gradient(circle at top left, rgba(10, 132, 255, 0.08), transparent 28%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.78), transparent 240px),
    var(--bg);
}

a {
  color: inherit;
}

.page-shell {
  min-height: 100vh;
}

.site-header {
  background: rgba(247, 251, 255, 0.94);
  border-bottom: 1px solid var(--line);
}

.site-header-inner,
.site-footer-inner,
.section,
.hero,
.page-hero {
  width: min(calc(100% - 32px), var(--content-width));
  margin: 0 auto;
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 68px;
}

.site-brand {
  text-decoration: none;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.site-brand small {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

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

.site-nav a {
  text-decoration: none;
  padding: 10px 14px;
  border-radius: 10px;
  color: var(--muted);
}

.site-nav a:hover,
.site-nav a:focus-visible {
  background: var(--brand-soft);
  color: var(--brand);
}

.hero,
.page-hero {
  padding: 44px 0 24px;
}

.hero-card,
.page-card,
.card,
.stack-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.hero-card,
.page-card {
  padding: 30px;
  position: relative;
  overflow: hidden;
}

.hero-card::before,
.page-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: linear-gradient(90deg, var(--brand) 0%, #82c2ff 100%);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--brand-dark);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.01em;
}

h1,
h2,
h3 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  letter-spacing: -0.04em;
}

h1 {
  max-width: 12ch;
  font-size: clamp(2.3rem, 7vw, 4.3rem);
  line-height: 0.98;
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  line-height: 1.05;
}

h3 {
  font-size: 1.2rem;
}

p,
li {
  color: var(--muted);
  font-size: 1.03rem;
  line-height: 1.68;
}

.lead {
  max-width: 54ch;
  font-size: 1.08rem;
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 700;
  border: 1px solid transparent;
}

.button-primary {
  color: #fff;
  background: linear-gradient(180deg, #2a9bff 0%, var(--brand) 100%);
}

.button-secondary {
  background: #eef6ff;
  border-color: var(--line);
}

.section {
  padding: 24px 0 56px;
}

.grid {
  display: grid;
  gap: 20px;
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card,
.stack-card {
  padding: 22px;
}

.tag-list,
.link-list,
.bullet-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
  margin: 18px 0 0;
  list-style: none;
}

.tag-list li {
  padding: 9px 12px;
  border-radius: 999px;
  background: #eef6ff;
  border: 1px solid var(--line);
  font-size: 0.95rem;
  color: var(--text);
}

.bullet-list {
  display: block;
  margin-top: 10px;
}

.bullet-list li {
  margin: 8px 0;
}

.app-card-title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
}

.app-card-title span {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--brand-dark);
  background: var(--brand-soft);
  padding: 8px 10px;
  border-radius: 999px;
}

.meta {
  display: grid;
  gap: 16px;
}

.meta strong {
  display: block;
  margin-bottom: 6px;
  color: var(--text);
}

.site-footer {
  padding: 28px 0 50px;
}

.site-footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: space-between;
  align-items: center;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

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

.site-footer a {
  text-decoration: none;
  color: var(--muted);
}

.note {
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: #eef6ff;
  border: 1px solid var(--line);
}

.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

@media (max-width: 860px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .hero-card,
  .page-card,
  .card,
  .stack-card {
    padding: 20px;
  }

  .site-header-inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 0;
  }
}