:root {
  color-scheme: light;
  --page: #f5f7fa;
  --surface: #ffffff;
  --ink: #1d1d1f;
  --body: #424245;
  --muted: #6e6e73;
  --line: #d9dce1;
  --blue: #0066cc;
  --blue-soft: #edf5ff;
  --focus: 0 0 0 3px rgba(0, 102, 204, 0.2);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--page);
  color: var(--body);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.8;
}

a {
  color: var(--blue);
  text-underline-offset: 3px;
}

a:hover {
  text-decoration-thickness: 2px;
}

a:focus-visible {
  outline: 0;
  box-shadow: var(--focus);
  border-radius: 3px;
}

.skip-link {
  position: fixed;
  z-index: 10;
  top: 10px;
  left: 10px;
  transform: translateY(-150%);
  padding: 9px 12px;
  border-radius: 6px;
  background: var(--ink);
  color: #fff;
}

.skip-link:focus {
  transform: translateY(0);
}

.legal-header {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.92);
}

.legal-nav,
.legal-main,
.legal-footer-inner {
  width: min(100% - 40px, 860px);
  margin-inline: auto;
}

.legal-nav {
  display: flex;
  min-height: 58px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.legal-brand {
  color: var(--ink);
  font-size: 17px;
  font-weight: 700;
  text-decoration: none;
}

.legal-nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 14px;
}

.legal-main {
  margin-block: 48px 64px;
  padding: clamp(28px, 5vw, 56px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.legal-kicker {
  display: block;
  margin-bottom: 8px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
}

h1,
h2,
h3 {
  color: var(--ink);
}

h1 {
  margin: 0;
  font-size: clamp(32px, 7vw, 48px);
  line-height: 1.2;
}

.legal-meta {
  margin: 14px 0 34px;
  color: var(--muted);
  font-size: 14px;
}

.legal-summary {
  margin: 0 0 38px;
  padding: 18px 20px;
  border-left: 3px solid var(--blue);
  background: var(--blue-soft);
  color: var(--ink);
}

.legal-section {
  padding-top: 30px;
  border-top: 1px solid var(--line);
}

.legal-section + .legal-section {
  margin-top: 30px;
}

.legal-section h2 {
  margin: 0 0 12px;
  font-size: 22px;
  line-height: 1.4;
}

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

.legal-section p,
.legal-section ul,
.legal-section ol {
  margin: 10px 0;
}

.legal-section ul,
.legal-section ol {
  padding-left: 1.4em;
}

.legal-section li + li {
  margin-top: 8px;
}

.legal-contact {
  overflow-wrap: anywhere;
}

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

.legal-footer-inner {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 640px) {
  .legal-nav,
  .legal-main,
  .legal-footer-inner {
    width: min(100% - 24px, 860px);
  }

  .legal-nav {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
    padding-block: 12px;
  }

  .legal-nav-links {
    width: 100%;
    justify-content: space-between;
  }

  .legal-main {
    margin-block: 20px 36px;
    padding: 24px 18px;
  }

  .legal-footer-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
    padding-block: 18px;
  }
}