:root {
  color-scheme: light dark;
  --bg: #f7fafb;
  --bg-strong: #ffffff;
  --text: #1f2428;
  --muted: #697177;
  --line: rgba(31, 36, 40, 0.12);
  --panel: rgba(255, 255, 255, 0.82);
  --blue: #0a84ff;
  --cyan: #18c6d8;
  --green: #34c759;
  --shadow: rgba(10, 34, 50, 0.14);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #151718;
    --bg-strong: #1d2023;
    --text: #f5f7f8;
    --muted: #a7adb2;
    --line: rgba(255, 255, 255, 0.12);
    --panel: rgba(255, 255, 255, 0.06);
    --shadow: rgba(0, 0, 0, 0.34);
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 8%, color-mix(in srgb, var(--cyan) 20%, transparent), transparent 32%),
    radial-gradient(circle at 88% 16%, color-mix(in srgb, var(--green) 14%, transparent), transparent 30%),
    var(--bg);
}

a {
  color: inherit;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 74px;
  padding: 0 clamp(20px, 5vw, 58px);
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg-strong) 88%, transparent);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font-weight: 800;
  text-decoration: none;
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 9px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-weight: 650;
}

.nav-links a {
  text-decoration: none;
}

.nav-links a:hover {
  color: var(--text);
}

.button {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border-radius: 999px;
  color: white;
  background: linear-gradient(145deg, var(--blue), var(--cyan));
  font-weight: 800;
  text-decoration: none;
  box-shadow: 0 14px 34px color-mix(in srgb, var(--blue) 30%, transparent);
}

.page {
  width: min(100% - 40px, 980px);
  margin: 0 auto;
  padding: clamp(54px, 8vw, 90px) 0;
}

.hero {
  max-width: 760px;
  margin-bottom: 36px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--blue);
  background: var(--panel);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

h1 {
  margin: 18px 0 14px;
  font-size: clamp(42px, 6vw, 68px);
  line-height: 1;
  letter-spacing: 0;
}

h2 {
  margin: 0 0 14px;
  font-size: 28px;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 8px;
  font-size: 19px;
}

p,
li {
  color: var(--muted);
  line-height: 1.65;
  font-size: 17px;
}

.lead {
  font-size: 20px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.panel,
.notice {
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--panel);
  box-shadow: 0 18px 52px var(--shadow);
  backdrop-filter: blur(18px);
}

.panel {
  padding: 24px;
}

.notice {
  padding: 18px 20px;
  margin: 24px 0;
}

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

.content section {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: color-mix(in srgb, var(--panel) 78%, transparent);
}

.content ul {
  margin: 12px 0 0;
  padding-left: 22px;
}

.content ol {
  margin: 14px 0 0;
  padding-left: 24px;
}

.meta {
  color: var(--muted);
  font-weight: 650;
}

.split-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.button.secondary {
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: none;
}

.facts {
  display: grid;
  gap: 12px;
  margin: 24px 0;
}

.fact-row {
  display: grid;
  grid-template-columns: minmax(160px, 0.45fr) minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: color-mix(in srgb, var(--panel) 72%, transparent);
}

.fact-row strong {
  color: var(--text);
}

.fact-row span,
.fact-row code {
  color: var(--muted);
  line-height: 1.5;
}

code {
  padding: 0.08em 0.35em;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--text);
  background: color-mix(in srgb, var(--panel) 82%, transparent);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92em;
}

.steps {
  counter-reset: guide-step;
  display: grid;
  gap: 14px;
  margin: 18px 0 0;
}

.step {
  counter-increment: guide-step;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 16px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: color-mix(in srgb, var(--panel) 78%, transparent);
}

.step::before {
  content: counter(guide-step);
  width: 42px;
  height: 42px;
  display: inline-grid;
  place-items: center;
  border-radius: 50%;
  color: white;
  background: linear-gradient(145deg, var(--blue), var(--cyan));
  font-weight: 850;
}

.step h3 {
  margin-top: 2px;
}

.step p {
  margin: 0;
}

.callout {
  border-left: 4px solid var(--blue);
}

.source-list {
  display: grid;
  gap: 10px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.source-list a {
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.source-list a:hover {
  color: var(--blue);
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: var(--panel);
  font-size: 14px;
  font-weight: 760;
}

footer {
  border-top: 1px solid var(--line);
  padding: 38px clamp(20px, 5vw, 58px);
  background: color-mix(in srgb, var(--bg-strong) 72%, transparent);
}

.footer-inner {
  width: min(100%, 1180px);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 26px;
  color: var(--muted);
}

.footer-inner strong {
  color: var(--text);
}

.footer-links {
  display: grid;
  gap: 10px;
}

.footer-links a,
.credit a {
  color: var(--text);
  text-decoration: none;
}

.footer-links a:hover,
.credit a:hover {
  color: var(--blue);
}

.credit {
  margin: 12px 0 0;
}

@media (max-width: 760px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding-top: 18px;
    padding-bottom: 18px;
  }

  .nav-links {
    flex-wrap: wrap;
  }

  .grid,
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .fact-row,
  .step {
    grid-template-columns: 1fr;
  }
}