:root {
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
  --ink: #263238;
  --muted: #607d8b;
  --line: #d9e2e7;
  --paper: #fffdf8;
  --surface: #ffffff;
  --surface-soft: #f7fbfa;
  --brand: #1f6f78;
  --brand-strong: #174f58;
  --accent: #b55d3d;
  --gold: #c99b4a;
  --success: #2e7d62;
  --danger: #b44343;
  --shadow: 0 18px 48px rgba(31, 68, 76, 0.14);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-sans);
  letter-spacing: 0;
}

body {
  margin: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input {
  font: inherit;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.62;
}

:focus-visible {
  outline: 3px solid rgba(31, 111, 120, 0.28);
  outline-offset: 3px;
}