/* 内页(Support / Terms / Privacy)专用样式;与首页(Vite+Svelte)同一套 Linear 风 token */
:root {
  color-scheme: light;
  --bg: #ffffff;
  --bg-subtle: #f9f9fa;
  --text: #08090a;
  --muted: #6b6f76;
  --line: #e9eaec;
  --live: #00a05a;
  --radius: 14px;
  --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

::selection {
  background: rgb(8 9 10 / 8%);
}

/* ── 头:悬浮毛玻璃,细线压底(与首页同构) ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 60px;
  padding: 0 clamp(20px, 4vw, 48px);
  background: rgb(255 255 255 / 78%);
  backdrop-filter: saturate(1.6) blur(14px);
  -webkit-backdrop-filter: saturate(1.6) blur(14px);
  border-bottom: 1px solid var(--line);
}

.brand,
.nav-links,
.site-footer nav {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.nav-links,
.site-footer nav {
  gap: clamp(14px, 2vw, 26px);
  color: var(--muted);
  font-size: 14px;
  font-weight: 550;
}

.nav-links a:hover,
.site-footer nav a:hover {
  color: var(--text);
}

/* ── 内页排版:窄栏文档,Linear docs 的密度 ── */
.page {
  max-width: 820px;
  margin: 0 auto;
  min-height: calc(100vh - 150px);
  padding: clamp(56px, 9vh, 104px) 24px clamp(72px, 10vh, 120px);
}

.eyebrow {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.page h1 {
  margin: 0;
  font-size: clamp(34px, 4.6vw, 52px);
  line-height: 1.08;
  font-weight: 750;
  letter-spacing: -0.025em;
}

.page-lede {
  max-width: 36em;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.75;
}

.content-block {
  margin-top: clamp(40px, 6vh, 64px);
}

.content-block h2 {
  margin: 38px 0 10px;
  font-size: 21px;
  font-weight: 650;
  letter-spacing: -0.012em;
}

.content-block h3 {
  margin: 28px 0 8px;
  font-size: 16.5px;
  font-weight: 650;
  letter-spacing: -0.008em;
}

.content-block p {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

.content-block a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 联系卡:细边框浅底,与首页特性卡同款 */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 16px;
}

.contact-grid a {
  display: grid;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-subtle);
  padding: 22px 20px;
  text-decoration: none;
  transition: border-color 0.15s ease;
}

.contact-grid a:hover {
  border-color: #d5d7db;
}

.contact-grid span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.contact-grid strong {
  color: var(--text);
  font-size: 16px;
  font-weight: 650;
  letter-spacing: -0.008em;
}

.faq-item {
  border-top: 1px solid var(--line);
  padding-top: 20px;
  margin-top: 20px;
}

.legal-block p strong {
  display: inline-block;
  min-width: 42px;
  color: var(--text);
  font-weight: 650;
}

.legal-block ul {
  margin: 10px 0 16px;
  padding-left: 22px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

.muted {
  color: var(--muted);
}

/* ── 尾:细线压顶(与首页同构) ── */
.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  max-width: 820px;
  margin: 0 auto;
  min-height: 84px;
  padding: 0 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

/* ── 响应式 ── */
@media (max-width: 620px) {
  .nav-links {
    gap: 14px;
    font-size: 13px;
  }

  .brand {
    font-size: 16px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding-block: 22px;
  }

  .site-footer nav {
    flex-wrap: wrap;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }
}