/* 延续 App 的系统字体、留白与番茄橙；法律正文优先可读性。 */
:root {
  color-scheme: light dark;
  --background: #fff;
  --text: #272727;
  --muted: #686868;
  --line: #e8e8e8;
  --accent: #b94913;
  --button: #ff732d;
  --button-text: #351605;
  --soft: #fafafa;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
* { box-sizing: border-box; }
html { scroll-padding-top: 32px; }
body { margin: 0; background: var(--background); color: var(--text); line-height: 1.7; }
a { color: inherit; text-underline-offset: 4px; }
a:hover { color: var(--accent); }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; border-radius: 4px; }
img { display: block; max-width: 100%; }
h1, h2, p { margin: 0; }
.skip-link { position: absolute; left: 24px; top: -80px; padding: 8px 16px; background: var(--background); z-index: 2; }
.skip-link:focus { top: 16px; }
.site-header { max-width: 1088px; margin: auto; padding: 28px 32px; display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-size: 16px; font-weight: 600; white-space: nowrap; }
.brand img { border-radius: 7px; }
.site-header nav { display: flex; gap: 28px; align-items: center; font-size: 14px; color: var(--muted); }
.site-header nav a { text-decoration: none; padding: 8px 0; }
.product-main { max-width: 896px; padding: 0 32px; margin: auto; }
.hero { padding: 64px 0 72px; }
.app-icon { border-radius: 20px; margin-bottom: 28px; }
h1 { font-size: 48px; line-height: 1.25; font-weight: 600; letter-spacing: -2px; }
.hero h1 span { color: var(--accent); }
.hero-description { margin-top: 24px; font-size: 18px; line-height: 1.8; color: var(--muted); }
.download { margin-top: 32px; display: inline-flex; align-items: center; justify-content: center; gap: 16px; min-height: 48px; padding: 12px 20px; border-radius: 12px; background: var(--button); color: var(--button-text); font-size: 15px; font-weight: 600; text-decoration: none; }
.download:hover { color: var(--button-text); background: #ff8548; }
.download svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.download-note { color: var(--muted); font-size: 12px; margin-top: 12px; }
.features { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.features li { display: grid; grid-template-columns: 1fr 2fr; gap: 40px; padding: 28px 0; border-bottom: 1px solid var(--line); }
.features h2 { font-size: 18px; font-weight: 600; line-height: 1.7; }
.features p { font-size: 16px; color: var(--muted); }
.pro-note { font-size: 12px; color: var(--muted); margin-top: 16px; }
.support { padding: 56px 0 64px; }
.support h2 { font-size: 22px; font-weight: 600; }
.support p { margin: 10px 0 14px; color: var(--muted); font-size: 15px; }
.support > a { font-size: 15px; }
.site-footer { max-width: 1024px; margin: auto; padding: 28px 32px 32px; border-top: 1px solid var(--line); font-size: 13px; color: var(--muted); }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 8px 24px; margin-bottom: 20px; }
.site-footer a { text-decoration: none; }
.site-footer a[aria-current] { color: var(--text); }
.colophon { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; font-size: 12px; }
.legal-main { max-width: 784px; padding: 40px 32px 72px; margin: auto; }
.back-link { font-size: 13px; color: var(--muted); text-decoration: none; }
.legal h1 { margin-top: 32px; font-size: 40px; letter-spacing: -1px; }
.updated { font-size: 13px; color: var(--muted); margin-top: 14px; }
.legal-intro { margin-top: 32px; }
.legal p + p { margin-top: 16px; }
.contents { margin-top: 32px; padding: 24px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.contents > p { font-size: 12px; color: var(--muted); margin-bottom: 12px; }
.contents > div { display: flex; flex-wrap: wrap; gap: 8px 24px; font-size: 14px; }
.contents a { text-decoration: none; }
.legal section { margin-top: 40px; }
.legal h2 { font-size: 21px; font-weight: 600; margin-bottom: 16px; line-height: 1.5; }
.legal h3 { font-size: 17px; font-weight: 600; margin: 24px 0 12px; }
.legal p, .legal li { overflow-wrap: anywhere; }
.legal li + li { margin-top: 10px; }
.legal ul, .legal ol { padding-left: 24px; margin: 16px 0; }
.legal a { color: var(--accent); }
.not-found { max-width: 784px; margin: 100px auto; padding: 32px; }
.not-found h1 { font-size: 36px; margin: 16px 0; }
.not-found > p { margin-bottom: 24px; color: var(--muted); }
@media (prefers-color-scheme: dark) {
  :root { --background: #171717; --text: #ededed; --muted: #a5a5a5; --line: #333; --accent: #ff975e; --soft: #202020; }
}
@media (max-width: 600px) {
  .site-header { padding: 20px 24px; gap: 16px; }
  .site-header nav { gap: 20px; font-size: 13px; }
  .brand { font-size: 15px; gap: 8px; }
  .brand img { width: 24px; height: 24px; border-radius: 6px; }
  .product-main { padding: 0 24px; }
  .hero { padding: 44px 0 48px; }
  .app-icon { width: 64px; height: 64px; border-radius: 16px; margin-bottom: 24px; }
  h1 { font-size: 36px; letter-spacing: -1px; }
  .hero-description { font-size: 16px; margin-top: 20px; }
  .download { margin-top: 28px; }
  .features li { grid-template-columns: 1fr; gap: 8px; padding: 24px 0; }
  .features h2 { font-size: 17px; }
  .features p { font-size: 15px; }
  .support { padding: 44px 0 48px; }
  .support h2 { font-size: 20px; }
  .site-footer { padding: 24px; }
  .site-footer nav { gap: 12px 20px; }
  .colophon { flex-direction: column; }
  .legal-main { padding: 28px 24px 48px; }
  .legal h1 { font-size: 32px; margin-top: 28px; }
  .legal h2 { font-size: 19px; }
  .legal { font-size: 15px; }
  .legal section { margin-top: 32px; }
  .contents > div { gap: 10px 20px; }
}
@media (max-width: 360px) {
  .site-header { padding-left: 20px; padding-right: 20px; }
  .site-header nav { gap: 12px; }
  .brand { font-size: 14px; }
  .brand img { display: none; }
  h1 { font-size: 32px; }
}