:root {
  --paper: #d9dee6;
  --ink: #1a2332;
  --mist: #f4f6f8;
  --aperture: #1e2430;
  --brass: #a9782f;
  --brass-ink: #1a1408;
  --pine: #1f6b4a;
  --fail: #8e3b3b;
  --line: #c5ced8;
  --muted: #526070;
  --serif: "Noto Serif SC", "Songti SC", serif;
  --sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", sans-serif;
}

* { box-sizing: border-box; }

html { color-scheme: light; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
  -webkit-tap-highlight-color: transparent;
}

button, input, select, textarea { font: inherit; color: inherit; }
button, a, summary { touch-action: manipulation; }
button { cursor: pointer; }

:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--brass);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: 16px;
  top: -48px;
  z-index: 5;
  background: var(--mist);
  color: var(--ink);
  padding: 8px 12px;
  text-decoration: none;
}
.skip:focus { top: 12px; }

.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

h1, h2, h3 { font-family: var(--serif); font-weight: 500; text-wrap: pretty; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}