:root {
  --gs31-primary: #183b2d;
  --gs31-accent: #90b34b;
  --gs31-bg: #f6f4ee;
  --gs31-white: #fff;
  --gs31-text: #243228;
  --gs31-muted: #6f786f;
  --gs31-border: #e5e3da;
  --gs31-max: 1180px;
  --gs31-shadow: 0 18px 50px rgba(24,59,45,.07);
  --gs31-font-ja: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", YuGothic, Meiryo, sans-serif;
  --gs31-font-en: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
}
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--gs31-bg);
  color: var(--gs31-text);
  font-family: var(--gs31-font-ja);
  font-size: 15px;
  line-height: 1.9;
  font-weight: 400;
  letter-spacing: .015em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
*, *::before, *::after { box-sizing: border-box; }
img { max-width: 100%; height: auto; }
a { color: inherit; }
button, input, select, textarea { font: inherit; }
h1, h2, h3, h4, h5, h6 { font-family: var(--gs31-font-ja); }
::selection { background: rgba(144,179,75,.28); }