:root {
  color-scheme: light;
  --bg: #f6f8fb;
  --surface: #ffffff;
  --surface-soft: #f9fbfd;
  --border: #dce4ee;
  --text: #162033;
  --muted: #66758a;
  --blue: #2563eb;
  --blue-soft: #eaf1ff;
  --green-soft: #e9f8ef;
  --green: #168348;
  --orange-soft: #fff3e3;
  --orange: #b35a00;
  --purple-soft: #f2edff;
  --purple: #6d42c5;
  --shadow: 0 18px 48px rgba(22, 32, 51, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  font-size: 28px;
  font-weight: 750;
}

.primary-button {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border: 0;
  border-radius: 8px;
  color: #fff;
  background: var(--blue);
  font-weight: 650;
}

.tool-link,
.back-link {
  text-decoration: none;
}

.back-link {
  color: var(--blue);
  font-weight: 650;
}