/* ===== 全局样式: 顶栏/导航/页脚/通用组件 ===== */

/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:"Source Han Sans SC","PingFang SC","Helvetica Neue",Arial,sans-serif;font-size:16px;line-height:1.8;color:#333;background:#fff;overflow-x:hidden}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .3s ease}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer;border:0;background:none}
h1,h2,h3,h4,h5{font-weight:700;line-height:1.3;color:#0f2b4a}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-head{text-align:center;margin-bottom:48px}
.section-head .subtitle{color:#c49a2c;font-size:16px;letter-spacing:3px;text-transform:uppercase;font-weight:600}
.section-head h2{font-size:38px;margin:8px 0 14px}
.section-head .desc{color:#666;max-width:720px;margin:0 auto;font-size:16px}
.text-gold{color:#d4a843!important}
/* ===== Preloader ===== */
#preloader{position:fixed;inset:0;background:#6B7B8D;z-index:10000;display:flex;align-items:center;justify-content:center;transition:opacity .5s ease,visibility .5s ease}
#preloader.hide{opacity:0;visibility:hidden}
#preloader .loader{width:60px;height:60px;border:4px solid rgba(255,255,255,.15);border-top-color:#d4a843;border-radius:50%;animation:spin 1s linear infinite}
#preloader .brand{position:absolute;color:#fff;font-size:14px;letter-spacing:4px;margin-top:110px}
@keyframes spin{to{transform:rotate(360deg)}}
/* ===== Top Bar ===== */
.top-bar{background:#546372;color:#ffffff;font-size:13px;padding:8px 0}
.top-bar .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:6px}
.top-bar a{color:#cfd8e3}
.top-bar a:hover{color:#d4a843}
.top-bar .tb-right{display:flex;align-items:center;gap:18px}
.top-bar .tb-item{display:inline-flex;align-items:center;gap:6px}
.top-bar .tb-item svg{width:14px;height:14px;fill:#d4a843}
.top-bar .lang-badge{border:1px solid rgba(212,168,67,.6);color:#d4a843;padding:1px 8px;border-radius:3px;font-weight:700;letter-spacing:1px}
/* ===== Header Nav ===== */
.site-header{position:sticky;top:0;z-index:9990;transition:all .3s ease;background:rgba(107,123,141,.95);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.site-header.scrolled{background:rgba(107,123,141,.92);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:0 6px 24px rgba(0,0,0,.18)}
.site-header.solid{background:rgba(107,123,141,.92)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:18px 0;transition:padding .3s ease}
.site-header.scrolled .header-inner{padding:10px 0}
.logo{display:flex;align-items:center;gap:10px}
.logo .logo-mark{width:42px;height:42px;background:linear-gradient(135deg,#d4a843,#c49a2c);border-radius:8px;display:flex;align-items:center;justify-content:center;font-weight:800;color:#0f2b4a;font-size:22px}
.logo .logo-text{color:#fff;font-size:22px;font-weight:800;letter-spacing:1px;line-height:1.1}
.logo .logo-text small{display:block;font-size:11px;color:#d4a843;font-weight:600;letter-spacing:3px}
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav>li{position:relative}
.main-nav>li>a{color:#fff;padding:10px 15px;display:block;font-size:15px;font-weight:600;letter-spacing:.5px;white-space:nowrap}
.main-nav>li>a:hover,.main-nav>li.active>a{color:#d4a843}
.main-nav>li.has-dropdown:hover .dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown{position:absolute;top:100%;left:0;min-width:230px;background:#fff;border-radius:6px;box-shadow:0 18px 40px rgba(0,0,0,.16);padding:10px 0;opacity:0;visibility:hidden;transform:translateY(10px);transition:all .25s ease;z-index:100}
.dropdown a{display:block;padding:10px 20px;color:#333;font-size:14px;font-weight:500;white-space:nowrap}
.dropdown a:hover{color:#c49a2c;background:#f8f9fa}
.dropdown .dd-group{position:relative}
.dropdown .dd-link{display:flex;align-items:center;justify-content:space-between;padding:10px 20px;color:#333;font-size:14px;font-weight:500}
.dropdown .dd-link:hover{color:#c49a2c;background:#f8f9fa}
.dropdown .dd-group:hover>.dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown .dropdown{top:-10px;left:100%;margin-left:0;min-width:225px}
.dropdown .dd-arrow{font-style:normal;font-size:14px;color:#999;margin-left:18px}
.header-cta{display:flex;align-items:center;gap:14px}
.btn-quote{background:linear-gradient(135deg,#d4a843,#c49a2c);color:#0f2b4a;font-weight:700;padding:10px 22px;border-radius:30px;font-size:14px;transition:all .3s ease;white-space:nowrap}
.btn-quote:hover{transform:scale(1.05);filter:brightness(1.08);box-shadow:0 6px 18px rgba(212,168,67,.4)}
.btn-explore{color:#fff;font-weight:600;padding:10px 20px;border-radius:30px;font-size:14px;border:1px solid rgba(255,255,255,.65);transition:all .3s ease;white-space:nowrap}
.btn-explore:hover{background:#fff;color:#6B7B8D;transform:scale(1.05)}
.hamburger{display:none;flex-direction:column;gap:5px;width:40px;height:40px;align-items:center;justify-content:center;background:rgba(255,255,255,.12);border-radius:6px}
.hamburger span{width:22px;height:2px;background:#fff;transition:all .3s ease}
.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)}
/* ===== Mobile Nav ===== */
.mobile-nav{position:fixed;inset:0;background:rgba(84,99,114,.97);z-index:9989;padding:80px 24px 30px;overflow-y:auto;transform:translateX(100%);transition:transform .35s ease;display:none}
.mobile-nav.open{transform:translateX(0)}
.mobile-nav>li{border-bottom:1px solid rgba(255,255,255,.08)}
.mobile-nav>li>a{color:#fff;padding:16px 0;display:flex;justify-content:space-between;align-items:center;font-size:17px;font-weight:600}
.mobile-nav .m-sub{display:none;padding:0 0 12px}
.mobile-nav .m-sub.open{display:block}
.mobile-nav .m-sub a{display:block;color:#b9c4d1;padding:9px 0 9px 16px;font-size:15px}
.mobile-nav .m-sub a:hover{color:#d4a843}
.mobile-nav .m-item a{display:block;color:#b9c4d1;padding:9px 0 9px 16px;font-size:15px}
.mobile-nav .m-group a{display:flex;justify-content:space-between;align-items:center;color:#cfd8e2;padding:10px 0 10px 16px;font-size:15px}
.mobile-nav .m-sub .m-sub{display:none}
.mobile-nav .m-sub .m-sub.open{display:block}
.mobile-nav .m-group .m-toggle span{color:#d4a843;margin-left:8px}
/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;padding:13px 30px;border-radius:4px;font-size:15px;transition:all .3s ease}
.btn:hover{transform:scale(1.05)}
.btn-gold{background:linear-gradient(135deg,#d4a843,#c49a2c);color:#0f2b4a}
.btn-blue{background:#6B7B8D;color:#fff}
.btn-outline{border:2px solid rgba(255,255,255,.85);color:#fff}
.btn-outline:hover{background:#fff;color:#6B7B8D}
/* ===== 分页 Banner ===== */
body .page-hero{position:relative;display:flex;flex-direction:column;padding:0;background:#fff;text-align:center}
body .page-hero::before{content:'';width:100%;height:350px;flex:0 0 auto;background:url('/storage/page-banner.jpg') center calc(50% + 15px) / 1910px 350px no-repeat #6B7B8D}
body .page-hero::after{display:none}
body .page-hero .container{width:100%;max-width:none;background:#fff;padding:22px 24px;margin:0}
body .page-hero h1{color:#0f2b4a}
body .page-hero .breadcrumb{color:#666}
body .page-hero .breadcrumb a{color:#c49a2c}
body .page-hero .meta{color:#888}
@media(max-width:991px){body .page-hero::before{height:250px}}
@media(max-width:576px){body .page-hero::before{height:150px}}
/* ===== Reveal animation ===== */
.reveal{opacity:0;transform:translateY(40px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:translateY(0)}
/* ===== Back to top ===== */
#backTop{position:fixed;bottom:24px;left:24px;width:46px;height:46px;background:linear-gradient(135deg,#d4a843,#c49a2c);border-radius:8px;color:#0f2b4a;display:flex;align-items:center;justify-content:center;font-size:20px;z-index:9990;opacity:0;visibility:hidden;transform:translateY(10px);transition:all .35s ease;box-shadow:0 8px 20px rgba(212,168,67,.4)}
#backTop.show{opacity:1;visibility:visible;transform:translateY(0)}
#backTop:hover{transform:translateY(-3px)}
/* ===== Floating social ===== */
.social-float{position:fixed;bottom:100px;right:20px;z-index:9999;display:flex;flex-direction:column-reverse;align-items:flex-end;gap:8px}
.social-float-toggle{width:48px;height:48px;background:#d4a843;color:#fff;border:none;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 4px 15px rgba(212,168,67,.3);transition:all .3s}
.social-float-toggle:hover{transform:scale(1.1)}
.social-float-toggle svg{fill:#fff}
.social-float-buttons{display:flex;flex-direction:column;gap:8px}
.social-btn{width:48px;height:48px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;text-decoration:none;position:relative;transition:all .3s;box-shadow:0 3px 10px rgba(0,0,0,.2)}
.social-btn:hover{transform:scale(1.15) translateX(-5px)}
.social-btn svg{width:20px;height:20px;fill:#fff}
.social-btn .social-label{position:absolute;right:56px;background:#fff;color:#1e293b;font-size:12px;padding:5px 12px;border-radius:4px;white-space:nowrap;opacity:0;visibility:hidden;transition:all .3s;box-shadow:0 2px 8px rgba(0,0,0,.1)}
.social-btn:hover .social-label{opacity:1;visibility:visible}
.social-btn.messenger{background:#0078FF}
.social-btn.whatsapp{background:#25D366}
.social-btn.skype{background:#00AFF0}
.social-btn.telegram{background:#0088CC}
.social-btn.facebook{background:#1877F2}
.social-btn.instagram{background:linear-gradient(45deg,#F58529,#DD2A7B,#8134AF)}
.social-btn.youtube{background:#FF0000}
.social-btn.tiktok{background:#000}
@media(max-width:576px){
  .social-float{bottom:80px;right:12px}
  .social-btn,.social-float-toggle{width:40px;height:40px}
  .social-btn svg{width:18px;height:18px}
}
/* ===== Footer ===== */
.site-footer{background:#546372;color:#b9c4d1;margin-top:0}
.footer-top{padding:64px 0 40px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px}
.footer-col h4{color:#fff;font-size:17px;margin-bottom:20px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:'';position:absolute;left:0;bottom:0;width:34px;height:2px;background:#d4a843}
.footer-about{margin-top:16px;font-size:14px;line-height:1.8;color:#b9c4d1}
.footer-social{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.soc-icon{width:38px;height:38px;border-radius:50%;background:rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center;color:#fff;transition:all .3s ease}
.soc-icon svg{width:18px;height:18px;fill:#fff;transition:transform .3s}
.soc-icon:hover{background:#d4a843}
.soc-icon:hover svg{animation:iconBounce .5s ease}
@keyframes iconBounce{0%,100%{transform:translateY(0)}25%{transform:translateY(-4px)}50%{transform:translateY(0)}75%{transform:translateY(-2px)}}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{color:#b9c4d1;font-size:14px}
.footer-col ul li a:hover{color:#d4a843;padding-left:6px}
.footer-contact li{font-size:14px;line-height:1.7}
.footer-contact strong{color:#d4a843}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;text-align:center}
.footer-bottom p{font-size:13px;color:#aab8c6}
.footer-bottom strong{color:#d4a843}
@media(max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;gap:30px}}
@media(max-width:576px){.footer-grid{grid-template-columns:1fr}.footer-top{padding:44px 0 30px}}
/* ===== Responsive ===== */
@media(max-width:991px){
  .main-nav,.header-cta .btn-quote,.header-cta .btn-explore{display:none}
  .hamburger{display:flex}
  .mobile-nav{display:block}
  .section{padding:60px 0}
  .section-head h2{font-size:32px}
}
@media(max-width:768px){
  .top-bar .container{justify-content:center;text-align:center}
  .section{padding:48px 0}
  .section-head h2{font-size:28px}
  .logo .logo-text{font-size:19px}
}
@media(max-width:576px){
  .container{padding:0 16px}
  .top-bar .tb-right{gap:10px}
  .btn{padding:12px 22px;font-size:14px}
}

/* ===== 性能与体验增强 ===== */
::selection{background:#d4a843;color:#0f2b4a}
section[id]{scroll-margin-top:90px}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid #d4a843;outline-offset:2px}
/* 图片容器占位, 防止加载时布局抖动(CLS) */
.prod-img,.case-img,.news-img,.prod-list-card .img,.case-card .img,.news-card .img,.related-card .img,.search-card .thumb,.about-thumb,.about-images img,.manufacturer-item img,.gallery-main{position:relative}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none!important;transition:none!important}
  html{scroll-behavior:auto}
}