/* ==========================================================================
   海邦网 · 全球化小帮手  —  首页样式
   主色沿用原站主题色 #1e50ae
   ========================================================================== */

:root{
  --navy:#1e50ae;
  --navy-deep:#17406f;   /* 品牌字色 */
  --navy-dark:#123f8f;
  --link:#076ce0;
  --ink:#212121;
  --body:#4a4a4a;
  --gray:#8a8f99;
  --gray-2:#a5abb4;
  --line:#ebebeb;
  --line-2:#f2f4f7;
  --soft:#f7f9fc;
  --white:#fff;
  --radius:8px;
  --shadow-sm:0 2px 8px rgba(20,40,80,.04);
  --shadow-md:0 14px 34px rgba(20,50,110,.10);
  --shadow-lg:0 20px 48px rgba(20,50,110,.16);
  --font:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei","微软雅黑",system-ui,-apple-system,"Segoe UI",sans-serif;
  --wrap:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  color:var(--body);
  background:var(--white);
  font-size:15px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
h1,h2,h3,h4,p,ul{margin:0;}
ul{list-style:none;padding:0;}
button{font-family:inherit;cursor:pointer;border:0;background:none;}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px;}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:46px;padding:0 26px;border-radius:4px;
  font-size:15px;font-weight:500;letter-spacing:.02em;
  transition:all .25s ease;white-space:nowrap;
}
.btn-primary{
  background:var(--navy);color:#fff;
  box-shadow:0 8px 20px rgba(30,80,174,.24);
}
.btn-primary:hover{background:#17439b;box-shadow:0 12px 26px rgba(30,80,174,.32);transform:translateY(-1px);}
.btn-ghost{border:1px solid rgba(30,80,174,.35);color:var(--navy);background:#fff;}
.btn-ghost:hover{border-color:var(--navy);background:#f5f8fe;}
.btn-outline{border:1px solid #d8dee8;color:#5a6270;background:#fff;}
.btn-outline:hover{border-color:var(--navy);color:var(--navy);}
.btn-lg{height:50px;padding:0 34px;font-size:16px;}

/* ==========================================================================
   顶部导航
   ========================================================================== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff url("../img/header-bg.jpg") center center / 100% 100% no-repeat;
  border-bottom:1px solid var(--line-2);
  transition:box-shadow .3s ease;
}
.site-header.is-stuck{
  box-shadow:0 6px 22px rgba(20,40,80,.08);
  background:#fff url("../img/header-bg.jpg") center center / 100% 100% no-repeat;
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:88px;gap:24px;}

.brand{display:flex;align-items:baseline;gap:10px;flex-shrink:0;}
.brand-name{
  font-size:30px;font-weight:800;font-style:italic;
  color:var(--navy-deep);letter-spacing:.02em;line-height:1;
}
.brand-divider{color:#c9cfd8;font-size:16px;}
.brand-sub{font-size:15px;color:#4b4b4b;letter-spacing:.04em;}

.nav{display:flex;align-items:center;gap:6px;}
.nav-item{
  position:relative;
  padding:10px 14px;font-size:15px;color:#777;
  border-bottom:2px solid transparent;
  transition:color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.nav-item:hover{color:var(--link);}
.nav-item.is-active{color:var(--navy);font-weight:600;border-bottom-color:var(--navy);}

.nav-toggle{display:none;width:38px;height:34px;flex-direction:column;justify-content:center;gap:5px;padding:0 6px;}
.nav-toggle span{display:block;height:2px;background:#3a4a63;border-radius:2px;transition:transform .25s ease,opacity .25s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ==========================================================================
   首屏
   ========================================================================== */
.hero{
  position:relative;
  background:#fbfdff;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background:url("../img/hero_bg.jpg") no-repeat center top / cover;
  opacity:.95;
  -webkit-mask-image:linear-gradient(to bottom,#000 72%,rgba(0,0,0,0) 99%);
  mask-image:linear-gradient(to bottom,#000 72%,rgba(0,0,0,0) 99%);
}
.hero-inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.02fr .98fr;align-items:center;gap:40px;
  padding-top:70px;padding-bottom:70px;
}
.hero-eyebrow{
  display:inline-block;font-size:13px;letter-spacing:.16em;color:#7f8894;
  padding:6px 14px;border-radius:30px;background:rgba(30,80,174,.07);
  margin-bottom:22px;
}
.hero h1{
  font-size:52px;line-height:1.2;color:#1b2733;font-weight:800;letter-spacing:.01em;
}
.hero h1 .accent{color:var(--navy);}
.hero-lead{margin-top:18px;font-size:17px;color:#5c6672;}
.hero-points{margin-top:22px;display:grid;gap:10px;}
.hero-points li{
  display:flex;align-items:center;gap:14px;
  font-size:15px;color:#5c6672;
  padding-left:14px;border-left:3px solid rgba(30,80,174,.25);
}
.hero-points b{color:var(--navy-deep);font-weight:600;}
.hero-points span{color:#7a828c;}
.hero-actions{margin-top:34px;display:flex;gap:14px;flex-wrap:wrap;}

.hero-art{position:relative;}
.hero-art img{width:100%;height:auto;filter:drop-shadow(0 18px 30px rgba(30,60,120,.12));}
.hero-art::after{
  content:"";position:absolute;inset:auto -6% -2% -6%;height:38%;
  background:radial-gradient(60% 100% at 50% 100%,rgba(30,80,174,.10),transparent 70%);
  z-index:-1;
}

/* ==========================================================================
   板块通用
   ========================================================================== */
.section{padding:76px 0;}
section[id],footer[id]{scroll-margin-top:92px;}

.section-head{text-align:center;margin-bottom:46px;}
.section-head h2{
  font-size:30px;font-weight:700;color:var(--ink);letter-spacing:.06em;
}
.section-head p{
  margin-top:10px;font-size:13px;color:#a9afb8;letter-spacing:.12em;
}
.services{padding-bottom:84px;}

/* ---------- 服务方案卡片 ---------- */
.service-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
}
.service-card{
  display:flex;flex-direction:column;align-items:center;text-align:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 18px 16px;min-height:300px;
  box-shadow:var(--shadow-sm);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.service-card:hover{
  transform:translateY(-6px);
  border-color:rgba(30,80,174,.22);
  box-shadow:var(--shadow-md);
}
.service-card h3{
  font-size:18px;font-weight:700;color:#333;letter-spacing:.02em;
}
.service-brand{
  margin-top:10px;font-size:13px;color:#9aa0a8;letter-spacing:.02em;
}
.service-brand b{
  display:inline-block;
  color:var(--navy);font-weight:700;font-size:15.5px;letter-spacing:.02em;
}
/* 注册商标符号：上标形式跟在品牌名后面 */
.service-brand b::after{
  content:"®";
  display:inline-block;
  font-family:"Times New Roman",Arial,sans-serif;
  font-size:15px;font-weight:400;line-height:1;
  vertical-align:super;
  margin-left:1px;
  letter-spacing:0;
}
/* 品牌名可点击：跳到该品牌独立站
   注意 b 是 inline-block，下划线画在 a 上不会穿透进去，必须直接画在 b 上 */
.service-brand a{color:inherit;text-decoration:none;}
.service-brand a:hover b{
  text-decoration:underline;
  text-decoration-color:var(--navy);
  text-underline-offset:4px;
  text-decoration-thickness:1px;
}

.service-art{
  margin-top:auto;padding-top:18px;
  display:flex;align-items:flex-end;justify-content:center;
  height:186px;width:100%;
}
.service-art img{
  max-height:168px;max-width:100%;width:auto;object-fit:contain;
  transition:transform .35s ease;
}
.service-art .art-svg{height:168px;width:auto;}
.service-card:hover .service-art img,
.service-card:hover .service-art .art-svg{transform:scale(1.05);}

/* ==========================================================================
   全球化资讯
   ========================================================================== */
.news{background:var(--soft);}
.news-tabs{
  display:flex;flex-wrap:wrap;justify-content:center;gap:10px;
  margin-bottom:38px;
}
.tab{
  height:38px;padding:0 20px;border-radius:20px;
  font-size:14px;color:#6b7480;background:#fff;border:1px solid #e6eaf1;
  transition:all .22s ease;
}
.tab:hover{color:var(--navy);border-color:rgba(30,80,174,.3);}
.tab.is-active{
  background:var(--navy);border-color:var(--navy);color:#fff;
  box-shadow:0 8px 18px rgba(30,80,174,.22);
}

/* ---------- 资讯分类标签 ---------- */
.news-cats{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:center;
  margin:-6px 0 34px;
}
.news-cat-btn{
  appearance:none;-webkit-appearance:none;
  font-family:inherit;font-size:13.5px;line-height:1;
  color:#5a6373;background:#fff;
  border:1px solid var(--line);border-radius:999px;
  padding:9px 16px;cursor:pointer;
  transition:color .22s ease,border-color .22s ease,background .22s ease,box-shadow .22s ease;
}
.news-cat-btn em{font-style:normal;font-size:11.5px;opacity:.55;margin-left:5px;}
.news-cat-btn:hover{
  color:var(--navy);border-color:rgba(30,80,174,.35);
  box-shadow:0 2px 10px rgba(30,80,174,.08);
}
.news-cat-btn.is-active{color:#fff;background:var(--navy);border-color:var(--navy);}
.news-cat-btn.is-active em{opacity:.8;}
.news-cat-btn:focus-visible{outline:2px solid rgba(30,80,174,.4);outline-offset:2px;}
.news-empty a{color:var(--navy);border-bottom:1px solid rgba(30,80,174,.3);}

.news-list{
  display:grid;grid-template-columns:1fr;
  width:100%;max-width:none;margin:0;
}
.news-item{
  position:relative;
  padding:22px 0;
  border-bottom:1px solid #eef1f6;
  transition:background-color .25s ease;
}
.news-item:first-child{padding-top:6px;}
.news-item:last-child{border-bottom-color:transparent;}
/* 鼠标移上整条高亮：底色铺满整个模块宽度 */
.news-item:hover{
  background:#f4f8ff;
  border-bottom-color:transparent;
}
.news-item::before{
  content:"";position:absolute;left:-14px;top:16px;bottom:16px;width:3px;
  border-radius:3px;background:var(--navy);
  opacity:0;transform:scaleY(.4);
  transition:opacity .25s ease,transform .25s ease;
}
.news-item:hover::before{opacity:1;transform:scaleY(1);}
.news-item-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;}
.news-item h3{
  font-size:16px;font-weight:600;color:#2c3542;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s ease;
}
.news-item:hover h3{color:var(--navy);}
.news-date{font-size:13px;color:#aab0b9;flex-shrink:0;padding-top:2px;letter-spacing:.02em;transition:color .25s ease;}
.news-item:hover .news-date{color:#7f8b9c;}
.news-desc{
  margin-top:8px;font-size:13.5px;color:#8d949e;line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-empty{grid-column:1/-1;padding:40px 0;text-align:center;color:#a5abb4;font-size:14px;}
.news-more{margin-top:40px;text-align:center;}

/* ==========================================================================
   服务咨询
   ========================================================================== */
.cta{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,#1a4899 0%,#2a6ad0 55%,#1e50ae 100%);
  color:#fff;
}
.cta::before{
  content:"";position:absolute;right:-8%;top:-60%;width:46%;height:220%;
  background:radial-gradient(closest-side,rgba(255,255,255,.16),transparent);
  transform:rotate(12deg);pointer-events:none;
}
.cta-inner{
  position:relative;z-index:1;
  display:flex;align-items:center;justify-content:space-between;gap:30px;
  padding-top:56px;padding-bottom:56px;flex-wrap:wrap;
}
.cta h2{font-size:28px;font-weight:700;letter-spacing:.06em;}
.cta p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.82);}
.cta .btn-primary{background:#fff;color:var(--navy);box-shadow:0 12px 26px rgba(0,0,0,.18);}
.cta .btn-primary:hover{background:#f2f7ff;}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer{background:#000;color:#9aa0a6;}
.footer-main{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr auto;gap:40px;
  padding-top:66px;padding-bottom:56px;
}
.brand-light .brand-name{color:#fff;font-size:26px;}
.brand-light .brand-divider{color:#3a3f45;}
.brand-light .brand-sub{color:#b9bfc6;font-size:14px;}
.footer-tag{margin-top:16px;font-size:13.5px;color:#7d838a;line-height:1.8;max-width:260px;}
.footer-mail{margin-top:26px;font-size:13px;color:#6f757c;line-height:1.9;}
.footer-mail a{color:#c9ced5;border-bottom:1px solid rgba(255,255,255,.18);padding-bottom:1px;}
.footer-mail a:hover{color:#fff;}

.footer-col h4,.footer-qr h4{
  font-size:15px;color:#fff;font-weight:600;margin-bottom:20px;letter-spacing:.04em;
}
.footer-col a{
  display:block;font-size:13.5px;color:#8a9098;line-height:2.3;
}
.footer-col a:hover{color:#fff;}

.qr-box{
  width:104px;height:104px;background:#fff;border-radius:6px;padding:6px;
}
.qr-box img{width:100%;height:100%;object-fit:contain;}

.footer-bottom{border-top:1px solid #1b1b1b;padding:22px 0 26px;}
.footer-note{font-size:12.5px;color:#5f656c;line-height:1.9;max-width:900px;}
.footer-meta{
  margin-top:14px;display:flex;flex-wrap:wrap;gap:18px;
  font-size:12.5px;color:#5f656c;
}
.footer-meta a:hover{color:#c9ced5;}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;right:26px;bottom:30px;z-index:50;
  width:44px;height:44px;border-radius:50%;
  background:rgba(30,80,174,.92);color:#fff;font-size:18px;
  box-shadow:0 10px 24px rgba(30,80,174,.35);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:all .28s ease;
}
.to-top.is-show{opacity:1;visibility:visible;transform:none;}
.to-top:hover{background:var(--navy);}

/* ==========================================================================
   进场动画
   ========================================================================== */
.reveal{opacity:0;transform:translateY(20px);}
.reveal.is-in{
  opacity:1;transform:none;
  transition:opacity .7s cubic-bezier(.22,.61,.36,1),transform .7s cubic-bezier(.22,.61,.36,1);
}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width:1080px){
  .hero h1{font-size:42px;}
  .hero-inner{gap:24px;}
  .footer-main{grid-template-columns:1.4fr 1fr 1fr auto;}
  .footer-qr{grid-column:4;}
}

@media (max-width:960px){
  .header-inner{height:74px;}
  /* 窄屏下背景图改为 cover，避免横向过度压缩 */
  .site-header,
  .site-header.is-stuck{background-size:cover;background-position:center;}
  .nav-toggle{display:flex;}
  .nav{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:0 18px 30px rgba(20,40,80,.10);
    max-height:0;overflow:hidden;transition:max-height .32s ease;
  }
  .nav.is-open{max-height:420px;}
  .nav-item{padding:15px 24px;border-bottom:1px solid var(--line-2);border-left:0;}
  .nav-item.is-active{background:#f5f8fe;border-bottom-color:var(--line-2);}

  .hero-inner{grid-template-columns:1fr;padding-top:48px;padding-bottom:68px;text-align:left;}
  .hero-art{order:-1;max-width:440px;margin:6px auto 14px;}
  .hero h1{font-size:38px;}

  .service-grid{grid-template-columns:repeat(2,1fr);}
  .news-list{grid-template-columns:1fr;}
  .footer-main{grid-template-columns:1fr 1fr;gap:34px;}
  .footer-qr{grid-column:2;}
}

@media (max-width:640px){
  .wrap{padding:0 18px;}
  .brand-name{font-size:24px;}
  .brand-sub{font-size:13px;}
  .hero-art{max-width:330px;}
  .hero h1{font-size:31px;}
  .hero-lead{font-size:15px;}
  .hero-points li{font-size:13.5px;flex-direction:column;align-items:flex-start;gap:2px;}
  .hero-actions{gap:10px;margin-top:30px;}
  .hero{padding-bottom:18px;}
  .btn{height:42px;padding:0 20px;font-size:14px;}

  .section{padding:54px 0;}
  .section-head h2{font-size:24px;}
  /* 移动端：服务卡片一行两块 */
  .service-grid{grid-template-columns:repeat(2,1fr);gap:12px;}
  .service-card{min-height:auto;padding:20px 10px 14px;}
  .service-card h3{font-size:16px;letter-spacing:0;}
  .service-brand{margin-top:8px;font-size:11.5px;letter-spacing:0;}
  .service-brand b{font-size:13px;}
  .service-brand b::after{font-size:11px;}
  .service-art{height:118px;padding-top:12px;}
  .service-art img{max-height:106px;}
  .service-art .art-svg{height:106px;}

  .cta-inner{padding-top:40px;padding-bottom:40px;flex-direction:column;align-items:flex-start;}
  .cta h2{font-size:23px;}

  .footer-main{grid-template-columns:1fr;gap:30px;padding-top:44px;padding-bottom:36px;}
  .footer-qr{grid-column:1;}
  .footer-note{font-size:12px;}
}

/* ==========================================================================
   资讯条目：整条可点击 / 加载骨架
   ========================================================================== */
a.news-item{display:block;color:inherit;}
a.news-item:hover .news-item-head h3{color:var(--navy);}
.news-item.is-loading{pointer-events:none;border-bottom-color:transparent;}
.sk-line{
  display:block;border-radius:4px;
  background:linear-gradient(90deg,#eef1f6 25%,#f8fafc 37%,#eef1f6 63%);
  background-size:400% 100%;animation:skShine 1.4s ease infinite;
}
.sk-title{width:70%;height:16px;}
.sk-desc{margin-top:12px;width:92%;height:12px;}
@keyframes skShine{0%{background-position:100% 50%}100%{background-position:0 50%}}

/* ---------- 资讯分类标签 · 移动端自动换行（全部可见） ---------- */
@media (max-width:640px){
  .news-cats{
    flex-wrap:wrap;overflow:visible;justify-content:center;
    gap:8px;margin:0 0 24px;padding-bottom:0;
  }
  .news-cat-btn{
    flex:0 0 auto;
    font-size:12.5px;line-height:1;
    padding:7px 12px;
  }
  .news-cat-btn em{font-size:11px;margin-left:4px;}
}