/* ============================================================
   853114.com - 全站共享 CSS（about/contact/privacy/terms 等静态页面）
   从 4 个页面中提取的去重公共样式
   Updated: 2026-07-07
   ============================================================ */

:root {
  --blue: #1a3a6e;
  --orange: #f58420;
  --gray: #f5f6fa;
  --gray-2: #888;
  --white: #fff;
  --shadow: 0 2px 12px rgba(26,58,110,0.08);
  --radius: 14px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--gray);
  color: #222;
  line-height: 1.7;
}

/* ---- 顶部导航 ---- */
.top-nav {
  background: var(--blue);
  color: var(--white);
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 48px;
  position: sticky;
  top: 0;
  z-index: 100;
}
.top-nav-logo {
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}
.top-nav-logo img { width: 32px; height: 32px; }
.top-nav-links { display: flex; gap: 16px; }
.top-nav-links a {
  color: rgba(255,255,255,0.85);
  text-decoration: none;
  font-size: 13px;
}
.top-nav-links a:hover { color: var(--orange); }

/* ---- 主内容区 ---- */
.main-wrap { max-width: 800px; margin: 0 auto; padding: 24px 16px; }
.page-title { font-size: 24px; color: var(--blue); margin-bottom: 8px; }
.page-subtitle { font-size: 14px; color: var(--gray-2); margin-bottom: 32px; }

/* ---- 内容区块（通用） ---- */
.section,
.about-section {
  background: var(--white);
  border-radius: var(--radius);
  padding: 28px 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow);
}
.section h2,
.about-section h2 {
  font-size: 18px;
  color: var(--blue);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--orange);
}
.section h3,
.about-section h3 { font-size: 15px; color: var(--blue); margin: 20px 0 10px; }
.section p,
.about-section p { font-size: 14px; line-height: 1.8; margin-bottom: 12px; }
.section ul,
.about-section ul { padding-left: 20px; margin-bottom: 12px; }
.section ul li,
.about-section ul li { font-size: 14px; line-height: 1.8; margin-bottom: 6px; }

/* ---- 底部 ---- */
.footer {
  background: var(--blue);
  color: rgba(255,255,255,0.8);
  padding: 32px 16px;
  text-align: center;
  font-size: 12px;
  line-height: 1.8;
}
.footer a { color: rgba(255,255,255,0.8); text-decoration: none; }
.footer a:hover { color: var(--orange); }
.footer-links {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

/* ---- 响应式 ---- */
@media (max-width: 600px) {
  .page-title { font-size: 20px; }
}
/* skip link */
.skip-link{position:absolute;top:-100%;left:16px;background:var(--orange);color:#fff;padding:8px 16px;border-radius:8px;font-size:14px;font-weight:600;z-index:9999;transition:top 0.2s;}.skip-link:focus{top:8px;}
/* prefers-reduced-motion */
@media(prefers-reduced-motion:reduce){*{transition-duration:0.01ms!important;animation-duration:0.01ms!important;}}
/* focus-visible */
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:4px;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--orange);outline-offset:2px;}