/* ══════════════════════════════════════════════════
   四时织锦·舟游四海 — nav.css  ·  升级版
   ══════════════════════════════════════════════════ */

.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-h);
  transition: background var(--transition), box-shadow var(--transition), backdrop-filter var(--transition);
}
.navbar.scrolled {
  background: rgba(12,32,12,.96);
  backdrop-filter: blur(20px) saturate(1.4);
  box-shadow: 0 2px 0 rgba(200,134,10,.25), 0 4px 32px rgba(0,0,0,.35);
}

/* 页面滚动进度条 */
.nav-progress {
  position: absolute;
  bottom: 0; left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(to right, var(--gold), var(--green-light));
  transition: width .1s linear;
  z-index: 10;
  border-radius: 0 2px 2px 0;
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 40px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ─── Logo ─── */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: 'Noto Serif SC', serif;
  font-weight: 700;
  color: var(--white);
  font-size: 1.05rem;
  letter-spacing: .05em;
  flex-shrink: 0;
  transition: opacity var(--transition);
}
.nav-logo:hover { opacity: .85; }
.logo-main { color: var(--white); }
.logo-sep  { color: var(--gold); margin: 0 1px; }
.logo-sub  { color: rgba(255,255,255,.65); font-size: .88rem; }

/* ─── Nav Links ─── */
.nav-links {
  display: flex;
  gap: 2px;
  align-items: center;
}
.nav-link {
  position: relative;
  font-size: .86rem;
  color: rgba(255,255,255,.78);
  padding: 7px 13px;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  letter-spacing: .03em;
  white-space: nowrap;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 3px; left: 13px; right: 13px;
  height: 1.5px;
  background: var(--gold-light);
  border-radius: 1px;
  transform: scaleX(0);
  transition: transform var(--transition);
}
.nav-link:hover {
  color: var(--white);
  background: rgba(255,255,255,.08);
}
.nav-link:hover::after { transform: scaleX(1); }
.nav-link.active {
  color: var(--gold-light);
  background: rgba(200,134,10,.12);
}
.nav-link.active::after { transform: scaleX(1); }

/* ─── Tourism 高亮导航项 ─── */
.nav-link--tourism {
  background: rgba(200,134,10,.16);
  color: var(--gold-light) !important;
  border: 1px solid rgba(200,134,10,.28);
  border-radius: var(--radius-xl);
}
.nav-link--tourism::after { display: none; }
.nav-link--tourism:hover {
  background: var(--gold);
  color: var(--white) !important;
  border-color: var(--gold);
  box-shadow: 0 4px 16px rgba(200,134,10,.4);
}

/* ─── Hamburger ─── */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }