/* ============================================
   TOP BAR - 顶部信息栏
   ============================================ */
.topbar{
  background:#0A1628;
  color:rgba(255,255,255,0.75);
  font-size:13px;
  position:relative;
  z-index:100;
  border-bottom:1px solid rgba(255,255,255,0.08);
}
.topbar-inner{
  width:100%;
  padding:0 40px;
  height:44px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.topbar-left, .topbar-right{
  display:flex;
  align-items:center;
  gap:0;
}
.topbar a{
  color:rgba(255,255,255,0.75);
  padding:8px 14px;
  display:inline-flex;
  align-items:center;
  gap:8px;
  transition:all .2s ease;
  font-weight:500;
  white-space:nowrap;
  font-size:13px;
}
.topbar-left a{
  border-right:1px solid rgba(255,255,255,0.08);
}
.topbar-left a:first-child{padding-left:0}
.topbar-left a:last-child{border-right:none}
.topbar-right a{
  border-left:1px solid rgba(255,255,255,0.08);
}
.topbar-right a:last-child{padding-right:0}
.topbar a:hover{
  color:var(--gold);
  background:rgba(212,175,55,0.05);
}
.topbar i{font-size:13px;color:var(--gold);flex-shrink:0}

/* ============================================
   HEADER / NAV - 主导航
   ============================================ */
.header{
  position:sticky;
  top:0;
  z-index:95;
  background:rgba(255,255,255,0.98);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(10,22,40,0.08);
  box-shadow:0 1px 0 rgba(212,175,55,0.06);
  transition:box-shadow .3s ease, border-color .3s ease;
  width:100%;
  box-sizing:border-box;
}.header:hover{
  box-shadow:0 1px 0 rgba(212,175,55,0.15), 0 4px 20px rgba(10,22,40,0.04);
}
.header-inner{
  width:100%;
  padding:0 40px;
  height:88px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  position:relative;
}

/* === BRAND / LOGO === */
.brand{
  display:flex;
  align-items:center;
  gap:16px;
  flex-shrink:0;
  text-decoration:none;
  min-width:0;
}
.brand-mark{
  width:124px;       /* 60% of 206px */
  height:41px;       /* 60% of 68px */
  flex-shrink:0;
  display:flex;
  align-items:center;
  justify-content:center;
  background:transparent;
  transition:transform .3s ease;
  position:relative;
  overflow:hidden;
}
.brand:hover .brand-mark{
  transform:scale(1.05);
}
.brand-mark img{
  width:124px;       /* 60% of 206px */
  height:41px;       /* 60% of 68px */
  max-width:124px;
  max-height:41px;
  object-fit:contain;
  padding:0;
  display:block;
}
.brand-text{
  display:flex;
  flex-direction:column;
  gap:4px;
  min-width:0;
}
.brand-text strong{
  font-size:20px;
  font-weight:800;
  color:var(--navy);
  letter-spacing:-0.015em;
  transition:color .2s ease;
  line-height:1.15;
  white-space:nowrap;
}
.brand-text span{
  font-size:13px;
  color:var(--muted);
  letter-spacing:0.1em;
  font-weight:500;
  white-space:nowrap;
}
.brand:hover .brand-text strong{color:var(--gold)}

/* === NAVIGATION === */
.nav{
  display:flex;
  align-items:center;
  gap:0;
  flex:1;
  justify-content:center;
  min-width:0;
}
.nav-item{
  position:relative;
  flex-shrink:0;
}
.nav-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:10px 14px;
  font-size:14px;
  font-weight:600;
  color:var(--navy);
  position:relative;
  transition:color .2s ease;
  letter-spacing:0;
  white-space:nowrap;
}
.nav-link i{
  font-size:9px;
  opacity:0.5;
  margin-top:2px;
  transition:transform .2s ease, color .2s ease, opacity .2s ease;
}
.nav-item:hover .nav-link i{transform:rotate(180deg);color:var(--gold);opacity:1}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:4px;
  height:2px;
  background:var(--gold);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:center;
  transition:transform .25s ease;
}
.nav-link:hover{color:var(--gold)}
.nav-item:hover .nav-link{color:var(--gold)}
.nav-item:hover .nav-link::after{transform:scaleX(1)}

/* === DROPDOWN MENU === */
.nav-item{position:relative}
/* 桥梁：在 nav-link 和下拉菜单之间，保持 hover 不会断 */
.nav-item::before{
  content:"";
  position:absolute;
  top:100%;
  left:-12px;right:-12px;
  height:18px;
  z-index:199;
  pointer-events:auto;
}
.dropdown{
  position:absolute;
  top:calc(100% + 6px);
  left:50%;
  transform:translateX(-50%);
  min-width:260px;
  max-width:360px;
  background:#fff;
  border:1px solid rgba(10,22,40,0.1);
  border-radius:12px;
  box-shadow:0 24px 60px rgba(10,22,40,0.2), 0 6px 16px rgba(10,22,40,0.08);
  padding:12px;
  display:none;
  z-index:200;
  animation:dropdown-in .2s ease forwards;
}
.dropdown::before{
  content:"";
  position:absolute;
  top:-8px;left:50%;
  transform:translateX(-50%) rotate(45deg);
  width:16px;height:16px;
  background:#fff;
  border-left:1px solid rgba(10,22,40,0.1);
  border-top:1px solid rgba(10,22,40,0.1);
}
@keyframes dropdown-in{
  from{opacity:0;transform:translateX(-50%) translateY(6px)}
  to{opacity:1;transform:translateX(-50%) translateY(0)}
}
.nav-item:hover > .dropdown{display:block}
.dropdown a{
  display:block;
  padding:10px 14px;
  font-size:13.5px;
  color:var(--ink-2);
  border-radius:8px;
  transition:all .15s ease;
  font-weight:500;
  line-height:1.4;
}
.dropdown a:hover{
  background:rgba(212,175,55,0.08);
  color:var(--gold);
  padding-left:18px;
}
.dropdown .all-link{
  font-weight:700;
  color:var(--gold);
  background:rgba(212,175,55,0.06);
  margin-bottom:4px;
}
.dropdown .all-link:hover{background:rgba(212,175,55,0.12)}

/* === HEADER CTA === */
.header-cta{
  display:flex;
  align-items:center;
  gap:14px;
  flex-shrink:0;
  min-width:0;
}
.header-cta .btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:12px 22px;
  background:var(--gold);
  color:var(--navy);
  border-radius:10px;
  font-size:13.5px;
  font-weight:700;
  transition:all .25s ease;
  box-shadow:0 4px 14px rgba(212,175,55,0.3);
  letter-spacing:0.02em;
  white-space:nowrap;
  border:1.5px solid var(--gold);
}
.header-cta .btn:hover{
  background:var(--gold-2);
  border-color:var(--gold-2);
  transform:translateY(-1px);
  box-shadow:0 6px 20px rgba(212,175,55,0.45);
  color:var(--navy);
}
.header-cta .btn i{font-size:12px}

/* === MOBILE MENU TOGGLE === */
.nav-toggle{
  display:none;
  width:46px;
  height:46px;
  background:#fff;
  border:1.5px solid rgba(10,22,40,0.12);
  border-radius:12px;
  cursor:pointer;
  padding:9px;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  gap:5px;
  transition:all .25s ease;
  box-shadow:0 2px 8px rgba(10,22,40,0.05);
}
.nav-toggle:hover{
  background:rgba(212,175,55,0.08);
  border-color:var(--gold);
  box-shadow:0 4px 12px rgba(212,175,55,0.2);
}
.nav-toggle:active{
  transform:scale(0.95);
}
.nav-toggle span{
  display:block;
  width:24px;
  height:2.5px;
  background:var(--navy);
  border-radius:2px;
  transition:all .3s ease;
}
.nav-toggle span:nth-child(2){width:18px}
.nav-toggle.active{
  background:rgba(212,175,55,0.1);
  border-color:var(--gold);
}
.nav-toggle.active span:nth-child(1){transform:translateY(8px) rotate(45deg);background:var(--gold);width:24px}
.nav-toggle.active span:nth-child(2){opacity:0;width:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-8px) rotate(-45deg);background:var(--gold);width:24px}

/* === MOBILE NAVIGATION PANEL === */
.nav-mobile{
  display:none;
  position:absolute;
  top:100%;
  left:0;
  right:0;
  background:#fff;
  border-bottom:1px solid rgba(10,22,40,0.08);
  box-shadow:0 20px 40px rgba(10,22,40,0.12);
  max-height:calc(100vh - 88px);
  overflow-y:auto;
  z-index:999;
  padding:12px 0;
  border-top:3px solid var(--gold);
  -webkit-overflow-scrolling:touch;
}
.nav-mobile.active{display:block;animation:navMobileSlide .25s ease}
@keyframes navMobileSlide{
  from{opacity:0;transform:translateY(-12px)}
  to{opacity:1;transform:translateY(0)}
}
.nav-mobile .nav-link{
  display:flex;
  align-items:center;
  padding:16px 32px;
  font-size:15.5px;
  font-weight:600;
  color:var(--navy);
  border-bottom:1px solid rgba(10,22,40,0.05);
  transition:all .15s ease;
  width:100%;
  position:relative;
}
.nav-mobile .nav-link::before{
  content:"";
  display:inline-block;
  width:4px;
  height:4px;
  border-radius:50%;
  background:rgba(212,175,55,0.4);
  margin-right:12px;
  flex-shrink:0;
  transition:all .15s ease;
}
.nav-mobile .nav-link:last-child{border-bottom:none}
.nav-mobile .nav-link:hover{
  background:rgba(212,175,55,0.08);
  color:var(--gold);
  padding-left:40px;
}
.nav-mobile .nav-link:hover::before{background:var(--gold);width:8px;height:8px}
.nav-mobile .nav-link::after{display:none}

/* ============================================
   BREADCRUMBS - 面包屑
   ============================================ */
.breadcrumbs{
  padding:18px 0;
  background:var(--bg-soft);
  border-bottom:1px solid rgba(10,22,40,0.06);
}
.breadcrumbs .container{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13.5px;
  color:var(--muted);
}
.breadcrumbs a{
  color:var(--ink-2);
  display:inline-flex;
  align-items:center;
  gap:6px;
  transition:color .2s ease;
  font-weight:500;
}
.breadcrumbs a:hover{color:var(--gold)}
.breadcrumbs a i{font-size:11px;color:var(--gold)}
.breadcrumbs .sep{
  color:var(--muted-2);
  margin:0 4px;
  font-weight:400;
}
.breadcrumbs .current{
  color:var(--gold);
  font-weight:600;
}

/* ============================================
   FOOTER - 页脚
   ============================================ */
.footer{
  background:#0A1628;
  color:rgba(255,255,255,0.7);
  margin-top:0;
  position:relative;
}
.footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(212,175,55,0.4),transparent);
  pointer-events:none;
}
.footer-top{
  display:grid;
  grid-template-columns:1.5fr 1fr 1.1fr 1.2fr;
  gap:48px;
  padding:72px 40px 56px;
  max-width:none;
  margin:0 auto;
  border-bottom:1px solid rgba(255,255,255,0.08);
  position:relative;
}
.footer-top > div:first-child{min-width:0}

/* Footer brand */
.footer-top .brand{gap:12px;margin-bottom:20px}
.footer-top .brand-mark{height:28px}
.footer-top .brand-mark img{max-height:28px}
.footer-top .brand-text strong{
  color:#fff;
  font-size:18px;
}
.footer-top .brand-text span{
  color:rgba(255,255,255,0.45);
  font-size:12px;
  letter-spacing:0.08em;
}

.footer-desc{
  color:rgba(255,255,255,0.55);
  font-size:14px;
  line-height:1.7;
  margin-top:4px;
  max-width:100%;
}

.footer h4{
  color:#fff;
  font-size:13px;
  font-weight:700;
  text-transform:uppercase;
  letter-spacing:0.12em;
  margin-bottom:20px;
  padding-bottom:12px;
  position:relative;
}
.footer h4::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:36px;height:2px;
  background:var(--gold);
  border-radius:1px;
}

.footer ul li{margin-bottom:10px}
.footer ul a{
  color:rgba(255,255,255,0.55);
  font-size:14px;
  transition:transform .25s ease, color .25s ease, opacity .25s ease;
  display:inline-flex;
  align-items:center;
  gap:6px;
  transform:translateX(0);
}
.footer ul a::before{
  content:"";
  width:5px;height:5px;
  background:var(--gold);
  border-radius:50%;
  opacity:0;
  transform:translateX(-6px);
  transition:all .25s ease;
  flex-shrink:0;
}
.footer ul a:hover{
  color:var(--gold);
  transform:translateX(4px);
}
.footer ul a:hover::before{opacity:1;transform:translateX(0)}

.footer-contact li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14px;
  line-height:1.6;
  margin-bottom:12px;
}
.footer-contact i{
  color:var(--gold);
  font-size:14px;
  flex-shrink:0;
  margin-top:2px;
  width:16px;
  text-align:center;
}
.footer-contact a{
  color:rgba(255,255,255,0.6);
  font-size:14px;
  transition:color .2s ease;
}
.footer-contact a:hover{color:var(--gold)}

/* === SOCIAL ICONS === */
.social{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:28px;
}
.social a{
  width:40px;
  height:40px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:rgba(255,255,255,0.05);
  color:rgba(255,255,255,0.6);
  border-radius:10px;
  font-size:14px;
  transition:all .25s ease;
  border:1px solid rgba(255,255,255,0.08);
}
.social a:hover{
  background:var(--gold);
  color:var(--navy);
  transform:translateY(-2px);
  box-shadow:0 6px 16px rgba(212,175,55,0.3);
  border-color:var(--gold);
}

.footer-bottom{
  max-width:none;
  margin:0 auto;
  padding:22px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  font-size:14px;
  color:rgba(255,255,255,0.65);
  flex-wrap:wrap;
}

/* ============================================
   RESPONSIVE - 响应式
   ============================================ */

/* --- Extra Large Desktop >= 1440px --- */
@media (max-width:1440px){
  .nav-link{padding:10px 12px;font-size:13.5px}
  .footer-top{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}
}

/* --- Large Desktop < 1360px - Compact nav --- */
@media (max-width:1360px){
  .header-inner{padding:0 28px;gap:20px}
  .nav-link{padding:10px 8px;font-size:13px}
  .brand-mark{width:115px;height:38px}
  .brand-mark img{width:115px;height:38px;max-width:115px;max-height:38px}
  .brand-text strong{font-size:17.5px}
  .header-cta .btn{padding:11px 18px;font-size:12.5px}
}

/* --- Desktop < 1280px - switch to mobile nav + hide CTA button --- */
@media (max-width:1280px){
  .topbar-inner, .header-inner, .footer-top, .footer-bottom{padding-left:24px;padding-right:24px}

  .nav{display:none !important}
  .nav-toggle{display:flex !important}

  .brand-mark{height:36px}
  .brand-mark img{max-height:36px}
  .brand-text strong{font-size:17px}
  .brand-text span{font-size:11.5px;letter-spacing:0.05em}

  /* Hide Request Quote button - only show hamburger when in mobile nav mode */
  .header-cta .btn{display:none !important}

  .nav-mobile{max-height:calc(100vh - 88px)}

  .footer-top{
    grid-template-columns:1fr 1fr;
    gap:40px;
    padding:64px 20px 40px;
  }
  .footer-bottom{padding:20px}
}

/* --- Tablet < 900px - show contact info in topbar, compact header --- */
@media (max-width:900px){
  .topbar{display:block}
  .topbar-inner{padding:6px 14px;height:auto;min-height:40px;gap:8px;flex-wrap:wrap}
  .topbar-right{display:none !important}
  .topbar-left{width:100%;justify-content:center;gap:10px;flex-wrap:wrap}
  .topbar-left a{padding:6px 10px;border-right:none;font-size:12.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;gap:4px}
  .topbar-left a i{font-size:12px}

  .header-inner{padding:0 18px;height:64px;gap:10px}
  .brand-mark{height:30px;flex-shrink:1}
  .brand-mark img{max-height:30px}
  .brand-text strong{font-size:15px}
  .brand-text span{font-size:11px;letter-spacing:0.02em}

  .header-cta .btn{display:none !important}
  .nav-toggle{display:flex !important;width:42px;height:42px;padding:8px;flex-shrink:0}
  .nav-toggle span{width:22px}

  .nav-mobile{max-height:calc(100vh - 120px);padding:10px 0}
  .nav-mobile .nav-link{padding:14px 24px;font-size:15px}

  .footer-top{
    grid-template-columns:1fr 1fr;
    gap:32px;
    padding:56px 18px 32px;
  }
  .footer-bottom{padding:18px;flex-direction:column;text-align:center}
}

/* --- Mobile < 720px - compact topbar, only hamburger in header --- */
@media (max-width:720px){
  .topbar-inner{padding:6px 10px;gap:6px}
  .topbar-left{gap:8px}
  .topbar-left a{padding:4px 8px;font-size:12px;gap:3px}
  .topbar-left a i{font-size:11px}

  .header-inner{padding:0 14px;height:60px;gap:10px}
  .brand{flex-shrink:1;min-width:0}
  .brand-mark{height:28px;flex-shrink:1}
  .brand-mark img{max-height:28px}
  .brand-text strong{font-size:14px}
  .brand-text span{display:none}

  .header-cta .btn{display:none !important}
  .nav-toggle{display:flex !important;width:40px;height:40px;padding:8px;border-radius:10px;flex-shrink:0}
  .nav-toggle span{width:20px;height:2.5px;gap:4px}

  .nav-mobile{
    max-height:calc(100vh - 120px);
    padding:8px 0;
  }
  .nav-mobile .nav-link{padding:14px 20px;font-size:14.5px}

  .footer-top{
    grid-template-columns:1fr;
    gap:36px;
    padding:48px 16px 32px;
  }
  .footer-desc{max-width:420px}
  .social{margin-top:24px}
}

/* --- Narrow Mobile < 560px - very compact topbar --- */
@media (max-width:560px){
  .topbar-inner{padding:5px 8px;gap:4px}
  .topbar-left{gap:6px}
  .topbar-left a{padding:3px 6px;font-size:11.5px;max-width:calc(50% - 3px);gap:3px}
  .topbar-left a i{font-size:10px}

  .header-inner{padding:0 12px;height:56px;gap:8px}
  .brand{gap:8px;flex-shrink:1;min-width:0}
  .brand-mark{height:26px;width:auto;min-width:0;flex-shrink:1}
  .brand-mark img{max-height:26px;width:auto;max-width:100px}
  .brand-text strong{font-size:13px;letter-spacing:-0.01em;overflow:hidden;text-overflow:ellipsis}
  .brand-text span{display:none}

  .header-cta .btn{display:none !important}
  .nav-toggle{display:flex !important;width:38px;height:38px;padding:6px;border-radius:10px;flex-shrink:0}
  .nav-toggle span{width:18px;height:2.5px}

  .nav-mobile{
    max-height:calc(100vh - 110px);
    padding:8px 0;
  }
  .nav-mobile .nav-link{padding:12px 18px;font-size:14px}
}

/* --- Small Phone < 480px - most compact, multi-line topbar --- */
@media (max-width:480px){
  .topbar-inner{padding:4px 6px;gap:4px}
  .topbar-left{gap:2px}
  .topbar-left a{padding:3px 6px;font-size:11px;max-width:calc(50% - 2px);min-width:0;flex:1 1 auto;text-align:center;gap:2px}
  .topbar-left a i{font-size:9px}

  .header-inner{padding:0 10px;height:56px;gap:6px}
  .brand{gap:6px;flex-shrink:1;min-width:0}
  .brand-mark{height:28px;flex-shrink:1}
  .brand-mark img{max-height:28px;max-width:96px}
  .brand-text strong{font-size:12.5px;letter-spacing:-0.01em;overflow:hidden;text-overflow:ellipsis}
  .header-cta .btn{display:none !important}
  .nav-toggle{display:flex !important;width:38px;height:38px;padding:6px;border-radius:8px;flex-shrink:0}
  .nav-toggle span{width:18px;height:2.5px}
  .nav-mobile{
    max-height:calc(100vh - 108px);
    padding:8px 0;
  }
  .nav-mobile .nav-link{padding:12px 16px;font-size:13.5px}
}

/* Firefox scrollbar fix */
@-moz-document url-prefix(){
  .nav-mobile{scrollbar-width:thin}
}