/* 绝影官网 · 导航与页脚样式（全站注入，含业务站）
 * 本文件只定义 .site-nav / .nav-* / .site-footer / .footer-* 前缀的类，
 * 不与业务站自带的 .hero/.section/.card 等样式冲突。
 * 改备案号与导航项请改 nav.js，改这里只影响外观。
 */
:root {
  --primary: #07C160;
  --primary-dark: #06AD56;
  --text: #1A1A1A;
  --text-secondary: #555555;
  --border: #E5E5E5;
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  --radius: 12px;
  --nav-h: 58px;
}

/* 为固定导航留出空间 */
body { padding-top: var(--nav-h); }

/* 业务站自带的吸顶顶栏让位，避免与全站导航重叠 */
.header { top: var(--nav-h) !important; }

/* ---------- 顶部导航 ---------- */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: rgba(255, 255, 255, 0.97);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  display: flex;
  align-items: center;
}
.nav-inner {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.nav-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.nav-logo img {
  height: 34px;
  width: auto;
  display: block;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.nav-menu::-webkit-scrollbar { display: none; }
.nav-link {
  font-size: 15px;
  color: var(--text-secondary);
  padding: 7px 11px;
  border-radius: 7px;
  white-space: nowrap;
  transition: color 0.15s, background 0.15s;
}
.nav-link:hover { color: var(--primary); background: #F0FAF4; }
.nav-link.active { color: var(--primary); font-weight: 600; background: #E6FFF0; }
.nav-cta {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: var(--primary);
  padding: 8px 16px;
  border-radius: 20px;
  white-space: nowrap;
}

/* 导航「免费报名」CTA（PC 端显示，移动端由悬浮按钮承接） */
.nav-cta-signup {
  margin-left: 10px;
  background: linear-gradient(135deg, #07C160, #06AD56);
  box-shadow: 0 3px 10px rgba(7, 193, 96, 0.30);
}
.nav-cta-signup:hover { background: linear-gradient(135deg, #06AD56, #059a4c); }

/* 全站报名悬浮按钮 */
.signup-fab {
  position: fixed;
  right: 20px;
  bottom: 24px;
  z-index: 9999;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, #07C160, #06AD56);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  padding: 13px 19px;
  border-radius: 999px;
  box-shadow: 0 6px 20px rgba(7, 193, 96, 0.35);
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s;
}
.signup-fab:hover {
  transform: translateY(-2px);
  box-shadow: 0 9px 26px rgba(7, 193, 96, 0.45);
  color: #fff;
}
.signup-fab-ico { font-size: 18px; }

@media (max-width: 767px) {
  .nav-cta-signup { display: none; }
  .signup-fab { right: 14px; bottom: 16px; font-size: 14px; padding: 11px 15px; }
  .signup-fab-ico { font-size: 16px; }
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: #2B2B2B;
  color: #CCCCCC;
  padding: 30px 0 24px;
  margin-top: 20px;
  font-size: 15px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}
.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 10px;
}
.footer-col p, .footer-col a {
  font-size: 15px;
  color: #BBBBBB;
  line-height: 2;
  display: block;
}
.footer-col a:hover { color: var(--primary); }
.footer-bottom {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid #444;
  font-size: 14px;
  color: #999;
  text-align: center;
  line-height: 2;
}
.footer-bottom a { color: #999; }
.footer-bottom a:hover { color: var(--primary); }

/* ---------- PC 断点 ---------- */
@media (min-width: 768px) {
  :root { --nav-h: 64px; }
  .nav-inner { padding: 0 24px; }
  .nav-logo { font-size: 18px; }
  .nav-link { font-size: 15px; padding: 8px 14px; }
  .footer-grid { grid-template-columns: repeat(3, 1fr); gap: 30px; }
  .site-footer { padding: 44px 0 28px; }
}