:root {
  color-scheme: light;
  --content-bg: #f4f7fb;
  --content-surface: #fff;
  --content-text: #111827;
  --content-muted: #667085;
  --content-border: #e4e7ec;
  --content-accent: #0f766e;
  --text: var(--content-text);
  --muted: var(--content-muted);
  --surface: var(--content-surface);
  --border: var(--content-border);
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--content-text);
  background:
    radial-gradient(circle at 88% 2%, rgba(20, 184, 166, .1), transparent 26rem),
    var(--content-bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

a {
  color: var(--content-accent);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(15, 118, 110, .28);
  outline-offset: 3px;
}

.content-main {
  min-height: 68vh;
  padding-block: clamp(3rem, 8vw, 6rem);
}

.content-hero {
  max-width: 780px;
  margin-bottom: 2rem;
}

.content-kicker {
  color: var(--content-accent);
  font-size: .76rem;
  font-weight: 850;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.content-hero h1 {
  margin: .7rem 0 1rem;
  font-size: clamp(2.45rem, 7vw, 4.8rem);
  line-height: 1;
  letter-spacing: -.055em;
}

.content-hero p {
  margin: 0;
  color: var(--content-muted);
  font-size: clamp(1rem, 2vw, 1.16rem);
}

.content-card {
  max-width: 900px;
  padding: clamp(1.35rem, 4vw, 2.5rem);
  background: var(--content-surface);
  border: 1px solid var(--content-border);
  border-radius: 22px;
  box-shadow: 0 18px 48px rgba(15, 23, 42, .07);
}

.content-card + .content-card {
  margin-top: 1rem;
}

.content-card h2 {
  margin: 0 0 .65rem;
  font-size: clamp(1.3rem, 3vw, 1.7rem);
  line-height: 1.2;
}

.content-card h3 {
  margin: 1.5rem 0 .45rem;
  font-size: 1.05rem;
}

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

.content-card p:last-child {
  margin-bottom: 0;
}

.content-card ul {
  padding-left: 1.25rem;
}

.content-meta {
  margin-top: 1rem;
  color: var(--content-muted);
  font-size: .82rem;
}

.content-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: 1.4rem;
}

.content-button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: .72rem 1rem;
  color: #fff;
  background: var(--content-accent);
  border-radius: 12px;
  text-decoration: none;
  font-weight: 800;
}

.content-button--quiet {
  color: var(--content-text);
  background: var(--content-surface);
  border: 1px solid var(--content-border);
}

.error-code {
  display: block;
  margin-bottom: .4rem;
  color: var(--content-accent);
  font-size: clamp(3rem, 16vw, 8rem);
  font-weight: 900;
  line-height: .8;
  letter-spacing: -.08em;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --content-bg: #080f1d;
  --content-surface: #101a2b;
  --content-text: #e8eef7;
  --content-muted: #9fb0c7;
  --content-border: #28374d;
  --content-accent: #2dd4bf;
}