@font-face {
  font-family: 'Sora';
  src: url('/Sora.ttf') format('truetype');
  font-weight: 100 800;
  font-display: swap;
}

:root {
  --bg: #0b0f22;
  --panel: #131935;
  --border: #252d52;
  --text: #e9ecfa;
  --muted: #8d96bd;
  --blue: #1f6bff;
  --blue-strong: #1857d6;
  --link: #74b4ff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.55 system-ui, -apple-system, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

header,
main,
footer {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 20px;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
}

header img {
  width: 170px;
  height: auto;
}

select {
  font: inherit;
  font-size: 15px;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 10px;
}

main {
  padding-top: 72px;
  padding-bottom: 56px;
}

h1,
h2,
h3 {
  font-family: 'Sora', system-ui, sans-serif;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 0;
}

h1 {
  font-size: clamp(34px, 6vw, 56px);
  font-weight: 600;
  max-width: 14em;
}

h2 {
  font-size: 28px;
  font-weight: 600;
  margin-top: 88px;
}

h3 {
  font-size: 19px;
  font-weight: 600;
}

.lead {
  font-size: 20px;
  color: var(--muted);
  max-width: 34em;
  margin: 20px 0 32px;
}

.muted {
  color: var(--muted);
  font-size: 15px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-block;
  padding: 12px 20px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
}

.button:hover {
  border-color: var(--link);
}

.button.primary {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
  font-weight: 600;
}

.button.primary:hover {
  background: var(--blue-strong);
  border-color: var(--blue-strong);
}

:is(a, select):focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 2px;
}

.columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin: 28px 0;
}

section {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 22px 24px;
}

ol {
  margin: 14px 0;
  padding-left: 22px;
}

li + li {
  margin-top: 8px;
}

pre {
  margin: 8px 0 0;
  padding: 10px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow-x: auto;
  font-size: 14px;
}

footer {
  padding-top: 20px;
  padding-bottom: 40px;
  color: var(--muted);
  font-size: 15px;
  border-top: 1px solid var(--border);
}

a {
  color: var(--link);
}