/* ============================================================
   Reseek 官网 · 导航栏 + 页脚
   ============================================================ */

/* —— 导航栏（毛玻璃） —— */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: var(--z-nav);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem var(--gutter);
  transition: all 0.5s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(5, 7, 10, 0.72);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom-color: var(--line);
  padding-block: 0.85rem;
}

/* —— Logo —— */
.nav-logo {
  display: flex;
  align-items: baseline;
  gap: 0.5em;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.02em;
  color: var(--text);
}
.nav-logo .dot {
  color: var(--cyan);
  text-shadow: 0 0 12px var(--cyan-glow);
}
.nav-logo .sub {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--text-mute);
  font-weight: 400;
}

/* —— 导航菜单 —— */
.nav-menu {
  display: flex;
  align-items: center;
  gap: clamp(1.2rem, 2.5vw, 2.4rem);
  list-style: none;
}
.nav-menu a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  position: relative;
  padding: 0.3em 0;
  transition: color 0.3s var(--ease);
}
.nav-menu a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 1px;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan-glow);
  transition: width 0.4s var(--ease);
}
.nav-menu a:hover,
.nav-menu a.active { color: var(--text); }
.nav-menu a.active::after,
.nav-menu a:hover::after { width: 100%; }

.nav-cta { display: flex; align-items: center; gap: 1rem; }

/* —— 汉堡菜单（移动端） —— */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span {
  width: 24px; height: 1.5px;
  background: var(--text);
  transition: all 0.35s var(--ease);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

@media (max-width: 860px) {
  .nav-toggle { display: flex; z-index: calc(var(--z-nav) + 2); }
  .nav-menu {
    position: fixed;
    inset: 0;
    flex-direction: column;
    justify-content: center;
    gap: 2rem;
    background: rgba(5, 7, 10, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transform: translateX(100%);
    transition: transform 0.5s var(--ease);
    z-index: calc(var(--z-nav) + 1);
  }
  .nav-menu.open { transform: translateX(0); }
  .nav-menu a { font-size: 1.1rem; }
  .nav-cta .btn:not(.btn-primary) { display: none; }
}

/* —— 页脚 —— */
.footer {
  position: relative;
  z-index: 1;
  background: var(--void);
  border-top: 1px solid var(--line);
  padding: clamp(3rem, 6vw, 5rem) 0 2.5rem;
}
.footer-tick { margin-bottom: clamp(2rem, 4vw, 3rem); } /* 收尾刻度母题，与全站板块首尾呼应 */
.footer-beian {
  color: var(--text-mute);
  transition: color 0.3s var(--ease);
}
.footer-beian:hover { color: var(--cyan); }
.footer-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2rem;
  align-items: flex-start;
}
.footer-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--text);
}
.footer-logo .dot { color: var(--cyan); }
.footer-tagline {
  color: var(--text-mute);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  margin-top: 0.6rem;
  text-transform: uppercase;
}
.footer-contact {
  display: grid;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-dim);
}
.footer-contact .row { display: flex; gap: 0.8em; align-items: center; }
.footer-contact .k { color: var(--text-mute); min-width: 3.5em; }
.footer-bottom {
  margin-top: clamp(2.5rem, 5vw, 4rem);
  padding-top: 1.6rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--text-mute);
  text-transform: uppercase;
}