/* ============================================================
   ujoffshore.com · common.css —— 公共层（头部/导航/页脚/波浪/悬浮组件/动画）
   冻结文件，页面代理禁止修改；差异化一律进 css/page-xxx.css
   ============================================================ */

/* ---------- 头部 ---------- */
body{padding-top:112px;transition:padding-top .3s var(--ease)}
.site-header{position:fixed;top:0;left:0;right:0;z-index:100}
.topbar{background:var(--c-cream-deep);color:var(--c-ink-soft);overflow:hidden;max-height:40px;transition:max-height .35s var(--ease),padding .35s var(--ease)}
.topbar-in{display:flex;justify-content:space-between;align-items:center;gap:16px;min-height:40px;font-size:.84rem}
.topbar-tip{margin:0;letter-spacing:.04em}
.topbar-tip::before{content:"";display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--c-pink-deep);margin-right:8px;vertical-align:1px}
.topbar-contact{display:flex;align-items:center;gap:18px}
.tb-item{display:inline-flex;align-items:center;gap:6px;color:var(--c-ink-soft);font-weight:600}
.tb-item svg{color:var(--c-pink-deep)}
.tb-item:hover{color:var(--c-pink-deep)}
.navbar{background:rgba(255,251,245,.92);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--c-line-soft);transition:box-shadow .3s var(--ease)}
.nav-in{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px}
body.scrolled .topbar{max-height:0}
body.scrolled .navbar{box-shadow:var(--sh-1)}

.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink)}
.brand:hover{color:var(--c-ink)}
.brand img{border-radius:12px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-family:var(--f-serif);font-size:1.28rem;letter-spacing:.12em;color:var(--c-ink)}
.brand-text i{font-style:normal;font-size:.64rem;letter-spacing:.2em;color:var(--c-brown)}

.site-nav{display:flex;align-items:center;gap:4px}
.site-nav a{position:relative;padding:.55em .82em;color:var(--c-ink-soft);font-weight:600;font-size:.98rem;border-radius:var(--r-sm)}
.site-nav a::after{content:"";position:absolute;left:.82em;right:.82em;bottom:.2em;height:3px;border-radius:3px;background:var(--c-pink);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}
.site-nav a:hover{color:var(--c-ink)}
.site-nav a:hover::after{transform:scaleX(1)}
body[data-nav="home"] .site-nav a[data-nav="home"],
body[data-nav="services"] .site-nav a[data-nav="services"],
body[data-nav="industry"] .site-nav a[data-nav="industry"],
body[data-nav="cases"] .site-nav a[data-nav="cases"],
body[data-nav="news"] .site-nav a[data-nav="news"],
body[data-nav="about"] .site-nav a[data-nav="about"],
body[data-nav="contact"] .site-nav a[data-nav="contact"]{color:var(--c-pink-deep)}
body[data-nav="home"] .site-nav a[data-nav="home"]::after,
body[data-nav="services"] .site-nav a[data-nav="services"]::after,
body[data-nav="industry"] .site-nav a[data-nav="industry"]::after,
body[data-nav="cases"] .site-nav a[data-nav="cases"]::after,
body[data-nav="news"] .site-nav a[data-nav="news"]::after,
body[data-nav="about"] .site-nav a[data-nav="about"]::after,
body[data-nav="contact"] .site-nav a[data-nav="contact"]::after{transform:scaleX(1)}

.nav-cta{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;width:44px;height:44px;border:1.5px solid var(--c-line);border-radius:12px;background:var(--c-white);cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.nav-toggle span{width:20px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform .3s var(--ease),opacity .3s var(--ease)}
body.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
body.nav-open .nav-toggle span:nth-child(2){opacity:0}
body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* 移动端导航抽屉 */
@media (max-width:1024px){
  .nav-toggle{display:flex}
  .site-nav{
    position:fixed;top:72px;right:0;bottom:0;left:0;z-index:99;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--c-white);padding:18px var(--gutter) 40px;
    transform:translateX(105%);transition:transform .4s var(--ease);
    overflow-y:auto;
  }
  body.nav-open .site-nav{transform:none}
  .site-nav a{font-size:1.12rem;padding:1em .4em;border-bottom:1px solid var(--c-line-soft)}
  .site-nav a::after{display:none}
  .nav-cta .btn{display:none}
}
@media (max-width:720px){
  body{padding-top:72px}
  .topbar{display:none}
}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;background:var(--c-cream);margin-top:0}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px;padding-block:clamp(46px,6vw,76px) 10px}
.footer-brand p{font-size:.92rem;color:var(--c-ink-soft);margin-top:14px}
.footer-contact{list-style:none;padding:0;margin:18px 0 0}
.footer-contact li{padding:.32em 0;font-size:.94rem;color:var(--c-ink-soft)}
.footer-contact a{color:var(--c-ink-soft);font-weight:600}
.footer-contact a:hover{color:var(--c-pink-deep)}
.footer-col h4{font-size:.98rem;letter-spacing:.14em;position:relative;padding-bottom:10px;margin-bottom:14px}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:30px;height:2.5px;border-radius:2px;background:var(--c-pink)}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li a{display:inline-block;padding:.32em 0;color:var(--c-ink-soft);font-size:.92rem}
.footer-col li a:hover{color:var(--c-pink-deep);transform:translateX(4px)}
.footer-col li a{transition:transform .25s var(--ease),color .25s var(--ease)}
.footer-wave{width:100%;overflow:hidden;line-height:0}
.footer-wave svg{width:100%;height:auto;display:block}
.footer-bottom{background:var(--c-cream-deep)}
.footer-bottom-in{display:flex;flex-wrap:wrap;gap:10px 26px;justify-content:space-between;align-items:center;padding-block:18px;font-size:.86rem;color:var(--c-ink-faint)}
.footer-bottom p{margin:0}
.footer-bottom a{color:var(--c-ink-faint)}
.footer-bottom a:hover{color:var(--c-pink-deep)}
.footer-legal{display:flex;gap:18px;list-style:none;padding:0;margin:0}
.beian a{color:var(--c-ink-faint);font-size:.84rem}
@media (min-width:820px){
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr}
}

/* ---------- 波浪分割 ---------- */
.wave-div{width:100%;overflow:hidden;line-height:0;display:block;pointer-events:none}
.wave-div svg{width:100%;height:auto;display:block}

/* ---------- 悬浮联系 ---------- */
.float-contact{position:fixed;right:18px;bottom:22px;z-index:90;display:flex;flex-direction:column;gap:10px}
.fc-item{
  width:54px;height:54px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:var(--c-pink-deep);color:#FFF6EA;box-shadow:var(--sh-2);
  font-size:.74rem;font-weight:700;letter-spacing:.05em;text-align:center;line-height:1.15;
  transition:transform .3s var(--ease),background .3s var(--ease);
}
.fc-item:hover{transform:translateY(-4px) scale(1.05);background:var(--c-pink);color:#fff}
.fc-tel{background:var(--c-accent)}
.fc-item svg{width:20px;height:20px}
@media (max-width:720px){
  .float-contact{right:12px;bottom:16px}
  .fc-item{width:48px;height:48px}
}

/* ---------- 页面载入与滚动渐入 ---------- */
body{animation:pageIn .6s var(--ease) both}
@keyframes pageIn{from{opacity:0}to{opacity:1}}
.js [data-reveal]{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.js [data-reveal="fade-in"]{transform:none}
.js [data-reveal="slide-l"]{transform:translateX(-34px)}
.js [data-reveal="slide-r"]{transform:translateX(34px)}
.js [data-reveal="zoom"]{transform:scale(.92)}
.js [data-reveal].revealed{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .js [data-reveal]{opacity:1;transform:none;transition:none}
  body{animation:none}
}

/* ---------- 弹层提示 ---------- */
.toast{
  position:fixed;left:50%;bottom:34px;transform:translateX(-50%) translateY(20px);
  background:var(--c-ink);color:#FBF5EC;padding:.85em 1.6em;border-radius:var(--r-full);
  font-size:.92rem;box-shadow:var(--sh-2);opacity:0;pointer-events:none;
  transition:opacity .35s var(--ease),transform .35s var(--ease);z-index:200;max-width:88vw;text-align:center;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---------- 卡片链接悬停通用 ---------- */
.card-link{position:absolute;inset:0;z-index:2;border-radius:inherit}