/* ============================================================
   KAISON header / mega menu / contact rail / mobile buyer nav
   (approved production markup — keep selectors in sync with
   header.php and footer.php)
   ============================================================ */

:root{--polar-white:#f8fbfd;--white:#fff;--ink:#0e1621;--deep-graphite:#17212b;--slate:#394756;--cool-gray:#6b7a89;--line-gray:#d8e1e8;--mist:#eef4f7;--precision-blue:#0b66c3;--glacier-blue:#dceff7;--steel-cyan:#16a6b6;--signal-amber:#f5a524;--display:"Sora","Inter","Segoe UI",Arial,sans-serif;--body:"Inter","Segoe UI",Arial,sans-serif;--data:"JetBrains Mono",Consolas,monospace}
.kaison-container{width:min(1200px,calc(100% - 80px));margin:0 auto}
.kaison-header,.kaison-header *,.kaison-rail,.kaison-rail *,.kaison-mobile-buyer-nav,.kaison-mobile-buyer-nav *{box-sizing:border-box}
.kaison-header a,.kaison-rail a,.kaison-mobile-buyer-nav a{color:inherit;text-decoration:none}

/* ===== 页眉 ===== */
.kaison-header{position:sticky;top:0;z-index:50;border-bottom:1px solid rgba(216,225,232,.86);background:rgba(255,255,255,.96);font-family:var(--body);backdrop-filter:blur(18px)}
.kaison-nav-toggle{display:none}
.kaison-contact-strip{background:var(--deep-graphite);color:#d7e2ea;font-size:12px;font-weight:650}
.kaison-contact-strip-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:38px}
.kaison-company-line,.kaison-contact-line{display:flex;align-items:center;gap:18px;min-width:0}
.kaison-company-line strong{color:var(--white);font-family:var(--display);font-size:12px}
.kaison-contact-chip{display:inline-flex;align-items:center;gap:7px;color:#d7e2ea;white-space:nowrap}
.kaison-contact-chip:hover{color:var(--white)}
.kaison-nav{display:flex;align-items:center;justify-content:space-between;height:76px;gap:20px}
.kaison-brand{display:flex;align-items:center;flex:0 0 auto}
.kaison-logo{display:block;height:58px!important;width:auto!important;max-width:300px!important;object-fit:contain}
.kaison-navlinks{display:flex;align-items:center;justify-content:flex-end;gap:8px;flex:1 1 auto;padding-right:28px;color:var(--slate);font-size:14px;font-weight:550}
.kaison-nav-item{position:relative}
.kaison-nav-link{display:inline-flex;align-items:center;min-height:44px;padding:0 13px;border-radius:4px;color:var(--slate);white-space:nowrap;transition:background .16s,color .16s}
.kaison-nav-link:hover,.kaison-nav-item:focus-within .kaison-nav-link,.kaison-nav-item.is-open .kaison-nav-link,.kaison-nav-link.active{color:var(--precision-blue)}
.kaison-nav-link:hover,.kaison-nav-item:focus-within .kaison-nav-link,.kaison-nav-item.is-open .kaison-nav-link{background:var(--mist)}
.kaison-nav-link.has-menu::after{content:"";width:6px;height:6px;margin-left:7px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px)}
.kaison-header-tools{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.kaison-button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 20px;border-radius:4px;border:0!important;background:var(--precision-blue)!important;color:var(--white)!important;font-size:15px;font-weight:750;line-height:1;cursor:pointer;text-decoration:none!important}
.kaison-button:visited{color:var(--white)!important}
.kaison-button:hover,.kaison-button:focus{background:#0957a6!important;color:var(--white)!important}

/* ===== 大菜单 ===== */
.kaison-mega-menu{position:fixed;top:114px;left:50%;width:min(1000px,calc(100vw - 80px));padding:20px;border:1px solid var(--line-gray);border-radius:8px;background:var(--white);box-shadow:0 24px 60px rgba(14,22,33,.16);opacity:0;visibility:hidden;transform:translate(-50%,8px);transition:opacity .12s,transform .12s,visibility .12s}
.kaison-nav-item:focus-within .kaison-mega-menu,.kaison-nav-item.is-open .kaison-mega-menu{opacity:1;visibility:visible;transform:translate(-50%,0)}
.kaison-mega-menu::before{content:"";position:absolute;left:0;right:0;top:-20px;height:20px}
.kaison-mega-grid{display:grid;grid-template-columns:1fr 1fr .88fr;gap:18px}
.kaison-mega-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;color:var(--ink);font-family:var(--display);font-size:13px;font-weight:800;text-transform:uppercase}
.kaison-mega-title span{color:var(--precision-blue);font-family:var(--data);font-size:11px}
.kaison-mega-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:5px;margin:0;padding:0;list-style:none}
.kaison-mega-list.single{grid-template-columns:1fr}
.kaison-mega-list a{display:block;min-height:32px;padding:6px 9px;border-radius:4px;color:var(--slate);font-size:13px;line-height:20px;white-space:nowrap}
.kaison-mega-list a:hover{background:var(--mist);color:var(--precision-blue)}
.kaison-mega-feature{min-height:212px;padding:18px;border-radius:8px;border:1px solid var(--line-gray);background:linear-gradient(135deg,rgba(220,239,247,.78),rgba(255,255,255,0) 48%),var(--polar-white)}
.kaison-mega-feature strong{display:block;color:var(--ink);font-family:var(--display);font-size:18px;line-height:24px}
.kaison-mega-feature p{margin:10px 0 18px;color:var(--cool-gray);font-size:13px;line-height:21px}
.kaison-mobile-toggle,.kaison-mobile-panel{display:none}

/* ===== 侧边联系栏 ===== */
.kaison-rail{--rail-btn:52px;--rail-icon:23px;position:fixed;right:18px;top:50%;z-index:80;display:flex;flex-direction:column;gap:6px;padding:8px;border:1px solid rgba(216,225,232,.9);border-radius:16px;background:rgba(255,255,255,.96);box-shadow:0 18px 46px rgba(14,22,33,.16);transform:translateY(-50%);backdrop-filter:blur(14px)}
/* !important 重置：防全局 button 样式把 <button> 项撑大 */
a.kaison-rail-item,button.kaison-rail-item{appearance:none!important;-webkit-appearance:none!important;position:relative;display:inline-flex!important;align-items:center!important;justify-content:center!important;width:var(--rail-btn)!important;height:var(--rail-btn)!important;min-width:0!important;min-height:0!important;margin:0!important;padding:0!important;border:0!important;border-radius:10px!important;background:transparent!important;color:var(--deep-graphite)!important;box-shadow:none!important;font-size:0!important;line-height:1!important;cursor:pointer;text-decoration:none!important;transition:background .18s,color .18s,transform .18s}
a.kaison-rail-item:hover,button.kaison-rail-item:hover{background:var(--precision-blue)!important;color:var(--white)!important;transform:translateY(-2px)}
.kaison-rail-item svg{width:var(--rail-icon)!important;height:var(--rail-icon)!important;display:block;flex:0 0 auto}
.kaison-rail-divider{height:1px;margin:2px 7px;background:var(--line-gray)}
.kaison-rail-tip,.kaison-rail-card{position:absolute;right:calc(100% + 12px);top:50%;opacity:0;pointer-events:none;transform:translateY(-50%) translateX(8px);transition:opacity .18s,transform .18s}
.kaison-rail-tip{padding:9px 13px;border-radius:8px;background:var(--deep-graphite);color:var(--white);font-size:13px;font-weight:750;white-space:nowrap;box-shadow:0 12px 28px rgba(14,22,33,.24)}
.kaison-rail-card{width:188px;padding:14px;border:1px solid var(--line-gray);border-radius:12px;background:var(--white);color:var(--ink);box-shadow:0 18px 44px rgba(14,22,33,.18);text-align:center}
.kaison-qr-placeholder{display:grid;place-items:center;width:150px;height:150px;margin:0 auto;border-radius:8px;background:linear-gradient(90deg,rgba(11,102,195,.14) 1px,transparent 1px),linear-gradient(rgba(11,102,195,.14) 1px,transparent 1px),var(--polar-white);background-size:12px 12px;color:var(--precision-blue);font-family:var(--display);font-size:15px;font-weight:800}
.kaison-rail-card span{display:block;margin-top:9px;color:var(--slate);font-size:12px;font-weight:750;line-height:18px}
.kaison-rail-item:hover .kaison-rail-tip,.kaison-rail-item:hover .kaison-rail-card{opacity:1;pointer-events:auto;transform:translateY(-50%) translateX(0)}

/* 切换提示小字（仅手机端显示） */
.kaison-bar-hint{display:none;position:absolute;top:5px;left:50%;transform:translateX(-50%);color:var(--cool-gray);font-size:10px;font-weight:750;letter-spacing:.04em;line-height:1;white-space:nowrap;pointer-events:none}

/* ===== 底部快捷栏（仅手机端） ===== */
.kaison-mobile-buyer-nav{display:none;position:fixed;left:0;right:0;bottom:0;z-index:94;grid-template-columns:repeat(5,1fr);gap:4px;min-height:74px;padding:22px 10px calc(6px + env(safe-area-inset-bottom));border-top:1px solid rgba(216,225,232,.9);border-radius:16px 16px 0 0;background:rgba(255,255,255,.98);box-shadow:0 -10px 30px rgba(14,22,33,.14);transition:transform .32s,opacity .22s}
.kaison-mobile-buyer-nav.is-hidden{transform:translateY(calc(100% + 10px));opacity:0;box-shadow:none}
.kaison-buyer-nav-link{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;min-height:46px;border-radius:10px;color:var(--slate);font-size:10px;font-weight:800;line-height:1;transition:background .18s,color .18s}
.kaison-buyer-nav-link svg{width:21px;height:21px}
.kaison-buyer-nav-link:hover,.kaison-buyer-nav-link.quote{color:var(--precision-blue);background:rgba(11,102,195,.1)}

/* ===== 响应式 ===== */
@media (max-width:1220px) and (min-width:1025px){
  .kaison-navlinks{font-size:13px;gap:4px;padding-right:18px}
  .kaison-nav-link{padding:0 9px}
}
@media (max-width:1024px){
  .kaison-container{width:min(1200px,calc(100% - 56px))}
  .kaison-navlinks,.kaison-header-tools,.kaison-contact-line,.kaison-company-line .kaison-contact-chip{display:none}
  .kaison-company-line{width:100%;justify-content:center}
  .kaison-mobile-toggle{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border:1px solid var(--line-gray);border-radius:4px;background:var(--white);color:var(--ink);cursor:pointer}
  .kaison-mobile-toggle span,.kaison-mobile-toggle span::before,.kaison-mobile-toggle span::after{display:block;width:18px;height:2px;background:currentColor;content:""}
  .kaison-mobile-toggle span{position:relative}
  .kaison-mobile-toggle span::before{position:absolute;top:-6px}
  .kaison-mobile-toggle span::after{position:absolute;top:6px}
  .kaison-mobile-panel{display:none;border-top:1px solid var(--line-gray);background:var(--white)}
  .kaison-nav-toggle:checked ~ .kaison-mobile-panel{display:block}
  .kaison-mobile-menu{display:grid;gap:8px;padding:16px 0 22px}
  .kaison-mobile-menu a,.kaison-mobile-menu summary{display:flex;align-items:center;justify-content:space-between;min-height:44px;padding:0 12px;border-radius:4px;background:var(--polar-white);color:var(--slate);font-size:14px;font-weight:750;list-style:none}
  .kaison-mobile-menu summary::-webkit-details-marker{display:none}
  .kaison-mobile-submenu{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px;padding:8px 0 4px}
  .kaison-mobile-submenu a{min-height:38px;background:var(--white);border:1px solid var(--line-gray);color:var(--cool-gray);font-size:13px}
}
@media (max-width:767px){
  .kaison-container{width:calc(100% - 40px)}
  .kaison-contact-strip{display:none}
  .kaison-nav{height:64px}
  .kaison-logo{height:44px!important}
  .kaison-mobile-submenu{grid-template-columns:1fr}
  /* 侧边栏贴底横排，压在快捷栏下层（z 90 < 94） */
  .kaison-rail{--rail-btn:44px;--rail-icon:21px;left:0;right:0;bottom:0;top:auto;z-index:90;flex-direction:row;justify-content:space-around;align-items:center;min-height:74px;gap:2px;padding:22px 10px calc(7px + env(safe-area-inset-bottom));border-left:0;border-right:0;border-bottom:0;border-radius:16px 16px 0 0;transform:none;box-shadow:0 -10px 30px rgba(14,22,33,.14)}
  .kaison-rail-divider{width:1px;height:26px;margin:0 4px}
  .kaison-rail-tip,.kaison-rail-card{right:auto;left:50%;top:auto;bottom:calc(100% + 12px);transform:translateX(-50%) translateY(8px)}
  .kaison-rail-item:hover .kaison-rail-tip,.kaison-rail-item:hover .kaison-rail-card{transform:translateX(-50%) translateY(0)}
  .kaison-mobile-buyer-nav{display:grid}
  .kaison-bar-hint{display:block}
  body{padding-bottom:calc(84px + env(safe-area-inset-bottom))}
}

/* ============================================================
   KAISON footer
   ============================================================ */

.kaison-footer-wrap{--fw-ink:#0e1621;--fw-graphite:#17212b;--fw-line:rgba(216,225,232,.16);--fw-text:#d7e2ea;--fw-dim:#8fa1b0;--fw-blue:#0b66c3;--fw-amber:#f2a33c;--fw-display:"Sora","Inter","Segoe UI",Arial,sans-serif;--fw-body:"Inter","Segoe UI",Arial,sans-serif;--fw-data:"JetBrains Mono",Consolas,monospace;
  background:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px),var(--fw-graphite);background-size:44px 44px;color:var(--fw-text);font-family:var(--fw-body)}
.kaison-footer-wrap *{box-sizing:border-box}
.kaison-footer-wrap a{color:inherit;text-decoration:none!important}
.kaison-footer-container{width:min(1200px,calc(100% - 80px));margin:0 auto}

/* ===== CTA 条 ===== */
.kaison-footer-cta{display:flex;align-items:center;justify-content:space-between;gap:32px;padding:64px 0 48px;border-bottom:1px solid var(--fw-line)}
.kaison-footer-kicker{display:flex;align-items:center;gap:12px;color:#9fb2c0;font-size:12px;font-weight:750;letter-spacing:.08em;text-transform:uppercase}
.kaison-footer-kicker::before{content:"";width:34px;height:2px;background:#16a6b6}
.kaison-footer-cta h2{margin:14px 0 0!important;color:#fff!important;font-family:var(--fw-display)!important;font-size:clamp(22px,2.6vw,34px)!important;font-weight:800;line-height:1.25!important}
.kaison-footer-cta p{margin:14px 0 0;max-width:640px;color:var(--fw-text);font-size:15px;line-height:1.7}
.kaison-footer-quote-btn{display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;min-height:50px;padding:0 26px!important;border:0!important;border-radius:4px!important;background:var(--fw-amber)!important;color:var(--fw-ink)!important;font-size:15px;font-weight:800;line-height:1!important;white-space:nowrap}
.kaison-footer-quote-btn:hover,.kaison-footer-quote-btn:focus,.kaison-footer-quote-btn:visited{background:#e0932e!important;color:var(--fw-ink)!important}

/* ===== 主体栏目 ===== */
.kaison-footer-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr 1fr 1.15fr;gap:36px;padding:52px 0 46px}
.kaison-footer-logo-chip{display:inline-flex;align-items:center;padding:10px 14px;border-radius:8px;background:#fff}
.kaison-footer-logo-chip img{display:block;height:40px!important;width:auto!important;max-width:190px!important;object-fit:contain}
.kaison-footer-brand p{margin:18px 0 0;color:var(--fw-text);font-size:13.5px;line-height:1.75}
.kaison-footer-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.kaison-footer-badges span{display:inline-flex;align-items:center;min-height:26px;padding:0 10px;border:1px solid var(--fw-line);border-radius:4px;color:#b9c9d6;font-family:var(--fw-data);font-size:11px;letter-spacing:.04em}
.kaison-footer-social{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.kaison-footer-social a{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border:1px solid var(--fw-line);border-radius:8px;color:#b9c9d6!important;transition:background .18s,border-color .18s,color .18s,transform .18s}
.kaison-footer-social a:hover{background:var(--fw-blue);border-color:var(--fw-blue);color:#fff!important;transform:translateY(-2px)}
.kaison-footer-social svg{width:18px;height:18px;display:block}
.kaison-footer-col-title{margin:0 0 16px!important;color:#fff!important;font-family:var(--fw-display)!important;font-size:13px!important;font-weight:800;letter-spacing:.08em;text-transform:uppercase}
.kaison-footer-links{display:grid;gap:4px;margin:0;padding:0;list-style:none}
.kaison-footer-links a{display:inline-flex;min-height:32px;align-items:center;color:var(--fw-text)!important;font-size:13.5px;transition:color .16s}
.kaison-footer-links a:hover{color:#fff!important}
.kaison-footer-contact-label{margin:0 0 4px;color:var(--fw-dim);font-size:11px;font-weight:750;letter-spacing:.08em;text-transform:uppercase}
.kaison-footer-contact-item{margin:0 0 16px;color:var(--fw-text);font-size:13.5px;line-height:1.65}
.kaison-footer-contact-item a:hover{color:#fff!important}

/* ===== 底栏 ===== */
.kaison-footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 0 26px;border-top:1px solid var(--fw-line);color:var(--fw-dim);font-size:12.5px}
.kaison-footer-bottom-links{display:flex;gap:22px}
.kaison-footer-bottom-links a{color:var(--fw-dim)!important}
.kaison-footer-bottom-links a:hover{color:#fff!important}

@media (max-width:1024px){
  .kaison-footer-container{width:min(1200px,calc(100% - 56px))}
  .kaison-footer-grid{grid-template-columns:1fr 1fr;gap:32px 28px}
  .kaison-footer-brand{grid-column:1 / -1}
}
@media (max-width:767px){
  .kaison-footer-container{width:calc(100% - 40px)}
  .kaison-footer-cta{flex-direction:column;align-items:flex-start;gap:22px;padding:44px 0 36px}
  .kaison-footer-cta p{font-size:14px}
  .kaison-footer-quote-btn{width:100%}
  .kaison-footer-grid{grid-template-columns:1fr 1fr;gap:26px 20px;padding:38px 0 30px}
  .kaison-footer-links a{font-size:13px;min-height:34px}
  .kaison-footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;padding-bottom:22px}
}