/* ============================================================
   webbase CMS · 前台样式 v2
   加载顺序：bootstrap → custom.css → v2.css
   ============================================================ */

:root{
  --ink:#0a1c30;
  --ink-2:#1c2d42;
  --body:#46566c;
  --muted:#7b8798;
  --line:#e7eaf0;
  --line-soft:#eff1f5;
  --sand:#f6f6f3;
  --paper:#ffffff;
  --navy:#08192b;
  --accent:#1f6feb;
  --accent-deep:#1558c8;
  --radius:14px;
  --header-h:74px;
  --ff:-apple-system,BlinkMacSystemFont,"SF Pro Text","PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
}

/* ---------- 基础 ---------- */
body{
  font-family:var(--ff);
  color:var(--body);
  background:var(--paper);
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{color:var(--ink);font-weight:600;letter-spacing:-.01em;}
a{color:inherit;}
::selection{background:var(--accent);color:#fff;}

.wrap{width:min(1200px,100% - 48px);margin-inline:auto;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:var(--header-h);
  background:rgba(255,255,255,.88);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s, box-shadow .3s;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 1px 18px rgba(10,28,48,.05);}
.sh-inner{
  height:100%;width:min(1240px,100% - 40px);margin-inline:auto;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;}
.brand img{height:34px;width:auto;}
.brand .mark{
  width:32px;height:32px;border-radius:9px;display:grid;place-items:center;
  background:linear-gradient(145deg,#2a6bff,#0b3ed0);color:#fff;font-weight:700;font-size:.95rem;
  box-shadow:0 4px 12px rgba(31,111,235,.25);
}
.brand span{font-size:1.05rem;font-weight:700;color:var(--ink);letter-spacing:.01em;}

.site-nav{display:flex;align-items:center;gap:28px;}
.site-nav .nav-item{position:relative;}
.site-nav .nav-item > a{
  display:inline-block;padding:6px 0;font-size:.93rem;font-weight:500;color:var(--ink-2);
  text-decoration:none;position:relative;
}
.site-nav .nav-item > a::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:1.5px;background:var(--accent);
  transition:right .3s cubic-bezier(.22,.61,.36,1);
}
.site-nav .nav-item > a:hover,.site-nav .nav-item > a.active{color:var(--accent);}
.site-nav .nav-item > a:hover::after,.site-nav .nav-item > a.active::after{right:0;}

.site-nav .submenu{
  position:absolute;top:calc(100% + 14px);left:-14px;min-width:180px;
  background:#fff;border:1px solid var(--line);border-radius:12px;
  box-shadow:0 18px 40px rgba(10,28,48,.10);
  padding:8px;opacity:0;visibility:hidden;transform:translateY(6px);
  transition:.25s;
}
.site-nav .nav-item:hover .submenu{opacity:1;visibility:visible;transform:none;}
.site-nav .submenu a{display:block;padding:9px 12px;border-radius:8px;font-size:.9rem;text-decoration:none;color:var(--ink-2);}
.site-nav .submenu a:hover{background:var(--sand);color:var(--accent);}

.nav-cta{
  display:inline-flex;align-items:center;height:40px;padding:0 20px;border-radius:999px;
  background:var(--ink);color:#fff !important;font-size:.88rem;font-weight:600;text-decoration:none;
  transition:background .25s, transform .25s;
}
.nav-cta:hover{background:var(--accent);transform:translateY(-1px);}
.nav-cta::after{display:none;}

.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;
  background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:1.6px;background:var(--ink);transition:.3s;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg);}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  margin-top:var(--header-h);
  height:clamp(560px,86vh,820px);
  overflow:hidden;
  background:#8fd0ef;
}
.hero-media{position:absolute;inset:-2.5%;will-change:transform;}
.hero-zoom{
  position:absolute;inset:0;
  animation:heroBreathe 28s ease-in-out infinite alternate;
  transform-origin:50% 45%;
  will-change:transform;
}
.hero-media img{
  width:100%;height:100%;object-fit:cover;object-position:center 42%;display:block;
}
@keyframes heroBreathe{from{transform:scale(1.01)}to{transform:scale(1.075)}}

.hero-beam{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;overflow:visible;}

.hero-inner{
  position:relative;z-index:2;height:100%;
  width:min(1200px,100% - 48px);margin-inline:auto;
  display:flex;flex-direction:column;justify-content:flex-start;align-items:center;
  padding-top:clamp(44px,7vh,80px);
}
.hero-copy{max-width:720px;text-align:center;}
.hero-kicker{
  display:inline-flex;align-items:center;gap:12px;margin:0 0 18px;
  font-size:.74rem;letter-spacing:.24em;text-transform:uppercase;color:rgba(6,40,66,.62);
}
.hero-kicker::before{content:"";width:36px;height:1px;background:#c05a3f;}
.hero h1{
  margin:0 0 16px;color:#062a46;
  font-size:clamp(2rem,4.2vw,3.4rem);line-height:1.16;letter-spacing:-.02em;font-weight:700;
  text-shadow:0 1px 0 rgba(255,255,255,.35);
}
.hero-lede{margin:0 auto 26px;max-width:30em;color:#15506f;font-size:clamp(.92rem,1.02vw,1rem);line-height:1.85;}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;justify-content:center;}
.btn-solid,.btn-ghost,.btn-line{
  display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 26px;
  border-radius:999px;font-size:.94rem;font-weight:600;text-decoration:none;
  transition:transform .25s,background .25s,border-color .25s,box-shadow .25s;
}
.btn-solid{background:#0d3350;color:#fff;box-shadow:0 10px 26px rgba(6,42,70,.22);}
.btn-solid:hover{background:#0a2942;transform:translateY(-2px);color:#fff;}
.btn-ghost{color:#0d3350;border:1px solid rgba(9,45,72,.32);background:rgba(255,255,255,.4);}
.btn-ghost:hover{background:#fff;color:#0d3350;}

.hero-meta{
  position:absolute;left:0;right:0;bottom:0;z-index:2;padding:16px 0;
  border-top:1px solid rgba(255,255,255,.18);
  background:linear-gradient(0deg,rgba(8,40,28,.5),transparent);
}
.hero-meta .in{
  width:min(1200px,100% - 48px);margin-inline:auto;display:flex;justify-content:space-between;gap:20px;
  font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:rgba(255,255,255,.75);
}

/* ---------- 通用 section ---------- */
.section{padding-block:clamp(64px,8vw,110px);}
.section--sand{background:var(--sand);}
.section-head{margin-bottom:clamp(32px,4vw,52px);}
.section-index{
  display:flex;align-items:baseline;gap:14px;margin:0 0 18px;
  font-size:.76rem;font-weight:600;letter-spacing:.16em;color:var(--muted);text-transform:uppercase;
}
.section-index b{color:var(--accent);font-weight:600;}
.section-index::after{content:"";flex:1;height:1px;background:var(--line);align-self:center;}
.section-head h2{font-size:clamp(1.8rem,3.2vw,2.6rem);line-height:1.25;margin:0 0 14px;}
.section-head p{color:var(--body);margin:0;max-width:44em;}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;}
.text-link{
  display:inline-flex;align-items:center;gap:8px;font-size:.88rem;font-weight:600;color:var(--ink);
  text-decoration:none;border-bottom:1px solid var(--ink);padding-bottom:3px;white-space:nowrap;
  transition:gap .25s,color .25s,border-color .25s;
}
.text-link:hover{gap:13px;color:var(--accent);border-color:var(--accent);}

/* 业务 */
.split{display:grid;grid-template-columns:.85fr 1.25fr;gap:clamp(36px,6vw,88px);align-items:start;}
.split .section-head{margin:0;}
.rich{font-size:.98rem;line-height:1.95;color:var(--body);}
.rich p{margin:0 0 1.1em;}
.rich p:last-child{margin-bottom:0;}
.rich h2,.rich h3{font-size:1.15rem;margin:1.6em 0 .6em;color:var(--ink);}

/* 案例 */
.case-grid{display:grid;grid-template-columns:repeat(var(--case-cols,3),minmax(0,1fr));gap:24px;}
.case-item{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;text-decoration:none;color:inherit;
  transition:transform .35s cubic-bezier(.22,.61,.36,1),box-shadow .35s,border-color .35s;
}
.case-item:hover{transform:translateY(-6px);border-color:#d5dbe5;box-shadow:0 22px 44px rgba(10,28,48,.10);color:inherit;}
.case-thumb{position:relative;aspect-ratio:4/3;overflow:hidden;background:#eef2f6;}
.case-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.22,.61,.36,1);}
.case-item:hover .case-thumb img{transform:scale(1.04);}
.case-tag{
  position:absolute;left:14px;top:14px;padding:3px 10px;border-radius:999px;
  background:rgba(8,25,43,.72);color:#fff;font-size:.7rem;letter-spacing:.08em;backdrop-filter:blur(4px);
}
.case-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;}
.case-body h3{font-size:1.06rem;line-height:1.5;margin:0 0 8px;}
.case-body p{margin:0;color:var(--body);font-size:.9rem;flex:1;}
.case-more{margin-top:18px;font-size:.84rem;font-weight:600;color:var(--accent);display:inline-flex;align-items:center;gap:6px;}

/* 文化 */
.culture{background:var(--navy);color:rgba(255,255,255,.72);position:relative;overflow:hidden;}
.culture::before{
  content:"";position:absolute;right:-10%;bottom:-60%;width:640px;height:640px;
  background:radial-gradient(closest-side,rgba(31,111,235,.25),transparent);pointer-events:none;
}
.culture .section-index{color:rgba(255,255,255,.45);}
.culture .section-index::after{background:rgba(255,255,255,.14);}
.culture .section-head h2{color:#fff;}
.culture .rich{color:rgba(255,255,255,.62);columns:2;column-gap:48px;}
.culture .rich p{break-inside:avoid;}
.culture .split{grid-template-columns:1fr;max-width:900px;}

/* 资讯 */
.news-list{border-top:1px solid var(--line);}
.news-item{
  display:grid;grid-template-columns:120px 1fr 24px;gap:26px;align-items:start;
  padding:26px 0;border-bottom:1px solid var(--line);text-decoration:none;color:inherit;
  transition:padding-left .3s,background .3s;
}
.news-item:hover{padding-left:10px;color:inherit;}
.news-item time{font-size:.78rem;color:var(--muted);font-variant-numeric:tabular-nums;padding-top:5px;letter-spacing:.04em;}
.news-item h3{font-size:1.06rem;line-height:1.55;margin:0 0 6px;transition:color .25s;}
.news-item:hover h3{color:var(--accent);}
.news-item p{margin:0;font-size:.88rem;color:var(--muted);}
.news-item .arr{color:#c2c9d4;transition:transform .3s,color .3s;margin-top:6px;}
.news-item:hover .arr{transform:translateX(4px);color:var(--accent);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--navy);color:rgba(255,255,255,.55);padding-top:62px;margin-top:0;}
.site-footer h5{color:#fff;font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;margin-bottom:18px;font-weight:600;}
.site-footer p{font-size:.9rem;line-height:1.9;color:rgba(255,255,255,.6);}
.site-footer ul{list-style:none;padding:0;margin:0;}
.site-footer li{margin-bottom:10px;}
.site-footer a{color:rgba(255,255,255,.62);text-decoration:none;font-size:.9rem;transition:color .2s;}
.site-footer a:hover{color:#fff;}
.site-footer .brand span{color:#fff;}
.footer-bottom{
  margin-top:44px;padding:20px 0;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:.78rem;color:rgba(255,255,255,.4);
}

/* ---------- 内页通用 ---------- */
.page-header{
  background:var(--navy);color:#fff;padding:calc(var(--header-h) + 64px) 0 64px;position:relative;overflow:hidden;
}
.page-header::after{
  content:"";position:absolute;right:-8%;top:-40%;width:520px;height:520px;
  background:radial-gradient(closest-side,rgba(31,111,235,.28),transparent);
}
.page-header h1{color:#fff;font-size:clamp(1.8rem,3.4vw,2.6rem);margin:0 0 10px;position:relative;}
.page-header .crumb{font-size:.82rem;color:rgba(255,255,255,.5);position:relative;}
.page-header .crumb a{color:rgba(255,255,255,.7);text-decoration:none;}
.page-content{padding:clamp(48px,6vw,80px) 0;}
.article-body{max-width:820px;margin-inline:auto;font-size:1.02rem;line-height:2;color:var(--body);}
.article-body img{max-width:100%;height:auto;border-radius:12px;}

/* 列表页卡片（文章/案例） */
.card{border:1px solid var(--line);border-radius:var(--radius);box-shadow:none;}
.card-img-top{aspect-ratio:4/3;object-fit:cover;}
.card-body{padding:22px;}
.card-title{font-size:1.05rem;}
.btn-outline-primary{
  color:var(--accent);border-color:#c9d7ea;border-radius:999px;font-size:.84rem;padding:.35rem 1rem;
}
.btn-outline-primary:hover{background:var(--accent);border-color:var(--accent);}
.tag{display:inline-block;padding:2px 10px;border-radius:999px;background:#eef3fb;color:var(--accent);font-size:.7rem;margin-bottom:8px;}

/* 表单 */
.form-control{border-radius:10px;border-color:var(--line);padding:.7rem .9rem;}
.form-control:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(31,111,235,.12);}
.btn-submit{
  background:var(--accent);color:#fff;border:0;border-radius:999px;height:48px;padding:0 30px;font-weight:600;
}
.btn-submit:hover{background:var(--accent-deep);}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .split{grid-template-columns:1fr;}
  .case-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .culture .rich{columns:1;}
}
@media (max-width:860px){
  .nav-toggle{display:flex;}
  .site-nav{
    position:fixed;top:var(--header-h);left:0;right:0;bottom:0;
    display:none;flex-direction:column;align-items:stretch;gap:0;
    background:#fff;padding:10px 24px 30px;overflow:auto;
    border-top:1px solid var(--line);
  }
  .site-nav.is-open{display:flex;}
  .site-nav .nav-item{border-bottom:1px solid var(--line-soft);}
  .site-nav .nav-item > a{padding:15px 0;font-size:1rem;display:block;}
  .site-nav .nav-item > a::after{display:none;}
  .site-nav .submenu{
    position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:0;
    padding:0 0 10px 14px;min-width:0;
  }
  .site-nav .submenu a{padding:8px 0;font-size:.92rem;color:var(--muted);}
  .nav-cta{margin-top:18px;align-self:flex-start;}

  .hero{margin-top:var(--header-h);height:auto;min-height:0;padding-bottom:0;background:#fff;}
  .hero-media{position:relative;inset:auto;height:52vw;min-height:240px;max-height:380px;overflow:hidden;}
  .hero-media img{height:100%;object-position:26% 40%;}
  .hero-inner{height:auto;width:100%;padding:30px 20px 44px;align-items:stretch;}
  .hero-copy{text-align:left;max-width:none;}
  .hero-kicker{justify-content:flex-start;margin-bottom:12px;}
  .hero h1{font-size:clamp(1.8rem,7vw,2.2rem);}
  .hero-lede{margin-left:0;margin-right:0;font-size:.92rem;}
  .hero-actions{justify-content:flex-start;}
  .hero-actions a{flex:1;}
  .hero-meta{display:none;}

  .head-row{flex-direction:column;align-items:flex-start;gap:14px;}
  .case-grid{grid-template-columns:1fr;}
  .news-item{grid-template-columns:1fr 20px;gap:8px 14px;}
  .news-item time{grid-column:1;}
  .news-item > div{grid-column:1;}
  .news-item .arr{grid-column:2;grid-row:1;}
  .section{padding-block:56px;}
}

@media (prefers-reduced-motion: reduce){
  .hero-zoom{animation:none;}
}

/* ---------- 内页头部（去掉波浪） ---------- */
.page-header > svg{display:none;}
.page-header .breadcrumb{background:none;padding:0;margin:0;font-size:.82rem;}
.page-header .breadcrumb-item,.page-header .breadcrumb-item a{color:rgba(255,255,255,.6);text-decoration:none;}
.page-header .breadcrumb-item.active{color:rgba(255,255,255,.9);}
.page-header .breadcrumb-item + .breadcrumb-item::before{color:rgba(255,255,255,.35);}

/* ---------- 联系我们 ---------- */
.contact-page{padding:clamp(48px,6vw,80px) 0 clamp(64px,8vw,100px);}
.contact-info-card,.contact-form-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:clamp(24px,3vw,34px);height:100%;
  box-shadow:0 10px 30px rgba(10,28,48,.04);
}
.contact-info-card h3,.contact-form-card h4{font-size:1.1rem;margin:0 0 18px;}
.contact-info-item{display:flex;gap:14px;align-items:flex-start;padding:14px 0;border-bottom:1px solid var(--line-soft);}
.contact-info-item:last-child{border-bottom:0;padding-bottom:0;}
.contact-info-item i{color:var(--accent);font-size:1.05rem;line-height:1.6;}
.contact-info-item strong{display:block;font-size:.74rem;letter-spacing:.1em;color:var(--muted);text-transform:uppercase;font-weight:600;margin-bottom:2px;}
.contact-info-item span{display:block;color:var(--ink);font-size:.94rem;}

/* ---------- 案例详情 ---------- */
.case-detail{padding:clamp(40px,5vw,72px) 0 clamp(64px,8vw,110px);}
.case-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:clamp(32px,4vw,56px);align-items:start;}
.case-main{min-width:0;}
.case-cover{margin:0 0 28px;border-radius:16px;overflow:hidden;background:#eef2f7;}
.case-cover img{width:100%;height:auto;display:block;}
.case-video{position:relative;aspect-ratio:16/9;border-radius:16px;overflow:hidden;background:#0a1624;margin-bottom:28px;}
.case-video iframe{position:absolute;inset:0;width:100%;height:100%;border:0;}
.case-lead{font-size:1.05rem;color:var(--body);margin:0 0 24px;line-height:1.9;}
.case-content{max-width:none;margin-bottom:8px;}

.case-gallery-block{margin-top:40px;padding-top:28px;border-top:1px solid var(--line);}
.case-gallery-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:18px;}
.case-gallery-head h2{font-size:1.25rem;margin:0;}
.case-gallery-head span{font-size:.8rem;color:var(--muted);letter-spacing:.08em;}
.case-gallery{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;}
.gallery-item{position:relative;margin:0;aspect-ratio:4/3;border-radius:12px;overflow:hidden;cursor:zoom-in;background:#eef2f7;}
.gallery-item img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s cubic-bezier(.22,.61,.36,1);}
.gallery-item:hover img{transform:scale(1.05);}
.gallery-item figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:18px 12px 8px;
  font-size:.72rem;color:#fff;background:linear-gradient(0deg,rgba(0,0,0,.55),transparent);
}

.case-side{position:sticky;top:calc(var(--header-h) + 24px);}
.case-card{background:var(--sand);border-radius:16px;padding:24px;}
.case-card h6{font-size:.76rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin:0 0 14px;}
.case-card dl{margin:0 0 20px;}
.case-card dt{font-size:.74rem;color:var(--muted);margin-top:12px;}
.case-card dt:first-child{margin-top:0;}
.case-card dd{margin:2px 0 0;font-size:.94rem;color:var(--ink);}
.case-cta{width:100%;}

@media (max-width:1024px){
  .case-layout{grid-template-columns:1fr;}
  .case-side{position:static;order:-1;}
  .case-gallery{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:640px){
  .case-gallery{grid-template-columns:1fr 1fr;}
  .case-card{padding:18px;}
}

.case-video video{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;background:#000;}
.case-video-link{margin:-18px 0 26px;font-size:.82rem;}
.case-video-link a{color:var(--muted);}

/* ---------- 分类资讯 tabs ---------- */
.news-tabbar{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:4px;overflow-x:auto;scrollbar-width:none;}
.news-tabbar::-webkit-scrollbar{display:none;}
.news-tab{
  border:0;background:none;padding:13px 18px;font-size:.92rem;font-weight:500;
  color:var(--muted);cursor:pointer;white-space:nowrap;position:relative;
  transition:color .2s;
}
.news-tab::after{
  content:"";position:absolute;left:14px;right:14px;bottom:-1px;height:2px;
  background:transparent;transition:background .2s;
}
.news-tab:hover{color:var(--ink);}
.news-tab.is-active{color:var(--ink);font-weight:600;}
.news-tab.is-active::after{background:var(--accent);}
.news-panel{display:none;}
.news-panel.is-active{display:block;}

.news-panel .case-grid{margin-top:4px;}
.news-panel .case-grid + .case-grid{margin-top:24px;}

/* ---------- 分类小标签 / 元信息 ---------- */
.cat-pill{
  display:inline-block;padding:2px 10px;border-radius:999px;
  background:#eef3fb;color:var(--accent);font-size:.7rem;font-weight:600;letter-spacing:.02em;
}
.news-meta{display:flex;align-items:center;gap:10px;margin-bottom:6px;}
.case-meta-line{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 0 10px;font-size:.74rem;color:var(--muted);}
.case-meta-line time{letter-spacing:.04em;font-variant-numeric:tabular-nums;}