:root {
  color-scheme: light;
  --bg: #f5f6f8;
  --panel: #ffffff;
  --text: #20252b;
  --muted: #5d6670;
  --line: #dfe3e8;
  --accent: #1f6feb;
  --max: 920px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.7;
}

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

.policy-header {
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}

.policy-header-inner,
.policy-main,
.policy-footer-inner {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.policy-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0;
}

.policy-brand {
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.policy-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 14px;
}

.policy-main {
  padding: 54px 0 72px;
}

.policy-intro {
  margin-bottom: 34px;
}

.policy-intro h1 {
  margin: 0 0 10px;
  font-size: clamp(30px, 5vw, 46px);
  line-height: 1.15;
  letter-spacing: 0;
}

.policy-intro p,
.policy-meta {
  margin: 0;
  color: var(--muted);
}

.policy-section {
  margin-top: 28px;
  padding: 26px 28px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.policy-section h2 {
  margin: 0 0 12px;
  font-size: 21px;
  line-height: 1.3;
}

.policy-section h3 {
  margin: 20px 0 8px;
  font-size: 17px;
}

.policy-section p {
  margin: 10px 0;
}

.policy-section ul {
  margin: 10px 0;
  padding-left: 22px;
}

.policy-footer {
  border-top: 1px solid var(--line);
  background: var(--panel);
}

.policy-footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  padding: 24px 0 30px;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 640px) {
  .policy-header-inner,
  .policy-main,
  .policy-footer-inner {
    width: min(var(--max), calc(100% - 28px));
  }

  .policy-header-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .policy-main {
    padding-top: 36px;
  }

  .policy-section {
    padding: 22px 20px;
  }
}