:root{
  --blue:#0a5bb2;
  --blue-deep:#003b87;
  --navy:#0b1f3a;
  --blue-ink:#08294f;
  --blue-soft:#e8f1fb;
  --gray-bg:#f4f6f9;
  --line:#e3e8ef;
  --text:#222;
  --text-2:#5a6675;
  --white:#fff;
  --shadow:0 10px 30px rgba(8,41,79,.10);
  --radius:6px;
  --maxw:1200px;
  --header-h:72px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,sans-serif;color:var(--text);background:var(--white);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
ul,ol{list-style:none}
button{font:inherit;border:0;background:none;cursor:pointer}

.skip-link{position:absolute;left:-9999px;top:0;background:var(--blue);color:#fff;padding:8px 16px;z-index:999;border-radius:0 0 4px 0}
.skip-link:focus{left:0}

/* ===== 顶部信息条 ===== */
.topbar{background:var(--navy);color:#c3cede;font-size:12px}
.topbar .inner{max-width:var(--maxw);margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding:6px 20px;gap:12px}
.topbar .hotline{color:#fff}
.topbar .hotline b{color:#9ec9ff;font-weight:600}
.topbar .links{display:flex;gap:18px}
.topbar a:hover{color:#fff}

/* ===== 主导航 ===== */
.site-header{position:sticky;top:0;z-index:100;background:#fff;box-shadow:0 1px 0 var(--line);transition:box-shadow .25s}
.site-header.scrolled{box-shadow:0 6px 24px rgba(8,41,79,.12)}
.nav-inner{max-width:var(--maxw);margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:var(--header-h);padding:0 20px;gap:24px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo .mark{width:40px;height:40px;border-radius:8px;background:linear-gradient(135deg,var(--blue) 0%,var(--blue-deep) 100%);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:20px;letter-spacing:.5px}
.logo .text{line-height:1.15}
.logo .text .cn{font-size:18px;font-weight:700;color:var(--navy);letter-spacing:1px}
.logo .text .en{font-size:10px;color:var(--text-2);letter-spacing:2px;text-transform:uppercase}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a{padding:10px 14px;font-size:15px;color:var(--text-2);border-radius:4px;position:relative;white-space:nowrap}
.main-nav a:hover,.main-nav a:focus-visible{color:var(--blue-deep);background:var(--blue-soft)}
.main-nav a[aria-current="page"]{color:var(--blue-deep);font-weight:600}
.main-nav a[aria-current="page"]::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--blue);border-radius:2px}
.nav-search{flex-shrink:0}
.nav-search form{display:flex;border:1px solid var(--line);border-radius:20px;overflow:hidden;background:#fff}
.nav-search input{border:0;outline:none;width:150px;padding:8px 14px;font-size:13px;color:var(--text)}
.nav-search input::placeholder{color:#9aa5b1}
.nav-search button{padding:0 14px;color:var(--text-2);display:flex;align-items:center}
.nav-search button:hover{color:var(--blue)}
.nav-toggle{display:none;width:44px;height:44px;border-radius:6px;color:var(--navy);align-items:center;justify-content:center}
.nav-toggle svg{width:24px;height:24px}

/* ===== Hero 轮播 ===== */
.hero{position:relative;overflow:hidden;background:var(--navy)}
.slides{display:flex;transition:transform .6s ease}
.slide{min-width:100%;position:relative;height:560px}
.slide .art{position:absolute;inset:0;width:100%;height:100%}
.slide .caption{position:relative;z-index:2;max-width:var(--maxw);margin:0 auto;height:100%;display:flex;flex-direction:column;justify-content:center;padding:0 20px;color:#fff}
.slide .kicker{font-size:14px;letter-spacing:6px;color:#a8cdf5;margin-bottom:14px;text-transform:uppercase}
.slide h2{font-size:44px;font-weight:700;letter-spacing:2px;line-height:1.25;max-width:640px;text-shadow:0 2px 18px rgba(0,20,50,.35)}
.slide p{margin-top:16px;font-size:16px;color:#cfe0f4;max-width:560px}
.slide .cta{margin-top:30px;display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(255,255,255,.55);color:#fff;padding:11px 30px;border-radius:28px;font-size:15px;letter-spacing:2px;width:fit-content;transition:.25s}
.slide .cta:hover{background:#fff;color:var(--blue-deep)}
.slide .tag{position:absolute;right:24px;bottom:20px;z-index:2;font-size:12px;color:rgba(255,255,255,.65);letter-spacing:1px}
.hero .arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:10;width:48px;height:48px;border-radius:50%;background:rgba(8,41,79,.28);color:#fff;display:flex;align-items:center;justify-content:center;transition:.25s;backdrop-filter:blur(2px)}
.hero .arrow:hover{background:var(--blue)}
.hero .arrow svg{width:22px;height:22px}
.hero .prev{left:18px}
.hero .next{right:18px}
.dots{position:absolute;bottom:22px;left:50%;transform:translateX(-50%);z-index:10;display:flex;gap:10px}
.dots button{width:28px;height:4px;border-radius:2px;background:rgba(255,255,255,.4);transition:.25s}
.dots button[aria-selected="true"]{background:#fff;width:44px}

/* ===== 通用 section ===== */
.section{padding:72px 0}
.section.alt{background:var(--gray-bg)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.sec-head{text-align:center;margin-bottom:44px}
.sec-head .zh{font-size:30px;font-weight:700;color:var(--navy);letter-spacing:2px}
.sec-head .en{margin-top:6px;font-size:13px;letter-spacing:5px;color:#9aa5b1;text-transform:uppercase}
.sec-head .more{margin-top:12px;font-size:13px;color:var(--blue)}
.sec-head .more:hover{text-decoration:underline}

/* ===== 业务生态 ===== */
.biz-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.biz-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:.3s}
.biz-card:hover{transform:translateY(-6px);box-shadow:0 18px 44px rgba(8,41,79,.16)}
.biz-card .cover{position:relative;height:240px;overflow:hidden}
.biz-card .cover svg{width:100%;height:100%;object-fit:cover}
.biz-card .cover .label{position:absolute;top:16px;left:16px;background:rgba(255,255,255,.92);color:var(--blue-deep);font-size:13px;font-weight:600;padding:5px 14px;border-radius:20px;letter-spacing:2px}
.biz-card .body{padding:26px 28px 30px;display:flex;flex-direction:column;flex:1}
.biz-card h3{font-size:22px;color:var(--navy);letter-spacing:1px;margin-bottom:12px}
.biz-card p{font-size:14px;color:var(--text-2);flex:1}
.biz-card .link{margin-top:18px;color:var(--blue);font-size:14px;font-weight:500}
.biz-card .link:hover{text-decoration:underline}

/* ===== 技术案例 ===== */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-auto-rows:230px;gap:18px}
.case-item{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);cursor:pointer}
.case-item.big{grid-column:span 2;grid-row:span 2}
.case-item .ph{position:absolute;inset:0;width:100%;height:100%}
.case-item .mask{position:absolute;inset:0;background:linear-gradient(to top,rgba(4,24,54,.82) 0%,rgba(4,24,54,.06) 55%,transparent 100%)}
.case-item .name{position:absolute;left:20px;right:20px;bottom:18px;color:#fff;z-index:2}
.case-item .name .t{font-size:17px;font-weight:600;letter-spacing:1px}
.case-item .name .s{font-size:12px;color:#b9cde6;margin-top:4px}
.case-item:hover .ph{transform:scale(1.05)}
.case-item .ph{transition:transform .5s ease}

/* ===== 新闻中心 ===== */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.news-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:.3s}
.news-card:hover{transform:translateY(-6px)}
.news-card .cover{height:170px;position:relative;overflow:hidden}
.news-card .cover svg{width:100%;height:100%}
.news-card .body{padding:20px 22px 24px;flex:1;display:flex;flex-direction:column}
.news-card .date{font-size:12px;color:#9aa5b1;margin-bottom:8px;letter-spacing:1px}
.news-card h3{font-size:16px;font-weight:600;color:var(--navy);line-height:1.5;flex:1}
.news-card h3 .ph-mark{color:#9aa5b1;font-weight:400;font-size:12px}
.news-card .more{margin-top:14px;font-size:13px;color:var(--blue)}
.news-card .more:hover{text-decoration:underline}

/* ===== 子品牌矩阵 ===== */
.brand-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.brand-cell{background:#fff;border:1px solid var(--line);border-radius:var(--radius);height:86px;display:flex;align-items:center;justify-content:center;text-align:center;padding:8px;transition:.25s;cursor:default}
.brand-cell span{font-size:15px;font-weight:600;color:var(--text-2);letter-spacing:2px}
.brand-cell:hover{border-color:var(--blue);box-shadow:0 8px 20px rgba(10,91,178,.12)}
.brand-cell:hover span{color:var(--blue-deep)}

/* ===== 联系横幅 ===== */
.contact-band{background:linear-gradient(120deg,var(--blue-deep) 0%,var(--blue) 100%);color:#fff;padding:60px 0}
.contact-band .wrap{display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap}
.contact-band h2{font-size:28px;font-weight:700;letter-spacing:2px}
.contact-band p{margin-top:10px;color:#cfe0f4;font-size:14px}
.contact-band .btn{background:#fff;color:var(--blue-deep);padding:13px 38px;border-radius:30px;font-size:15px;font-weight:600;letter-spacing:2px;transition:.25s;white-space:nowrap}
.contact-band .btn:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,0,0,.18)}

/* ===== 页脚 ===== */
.site-footer{background:var(--navy);color:#93a3b8;font-size:13px}
.footer-main{max-width:var(--maxw);margin:0 auto;padding:52px 20px 40px;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px}
.footer-brand .logo .text .cn{color:#fff}
.footer-brand .logo .text .en{color:#6c7f97}
.footer-brand p{margin-top:18px;font-size:13px;line-height:1.8;color:#7c8ea6}
.site-footer h4{color:#fff;font-size:15px;letter-spacing:2px;margin-bottom:18px;font-weight:600}
.site-footer li{margin-bottom:10px}
.site-footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08)}
.footer-bottom .inner{max-width:var(--maxw);margin:0 auto;padding:18px 20px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12px;color:#6c7f97}
.footer-bottom .beian{color:#5a6b82}

/* 免责声明 */
.disclaimer{max-width:var(--maxw);margin:0 auto;padding:0 20px 26px;font-size:12px;color:#8c97a3;line-height:1.8}
.disclaimer b{color:#6a7684}

/* ===== 回到顶部 ===== */
.back-top{position:fixed;right:26px;bottom:34px;width:46px;height:46px;border-radius:50%;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 22px rgba(10,91,178,.4);opacity:0;visibility:hidden;transform:translateY(10px);transition:.3s;z-index:90}
.back-top.show{opacity:1;visibility:visible;transform:none}
.back-top:hover{background:var(--blue-deep)}
.back-top svg{width:20px;height:20px}

/* ===== 响应式 ===== */
@media (max-width:1360px){
  .nav-inner{gap:16px}
  .main-nav{gap:2px}
  .main-nav a{padding:10px 11px}
  .nav-search input{width:130px}
}
@media (max-width:1024px){
  .slide h2{font-size:36px}
  .footer-main{grid-template-columns:1fr 1fr}
}
@media (max-width:860px){
  .main-nav{position:fixed;top:0;right:-300px;width:280px;height:100vh;background:#fff;flex-direction:column;align-items:stretch;padding:84px 18px 24px;gap:2px;box-shadow:-8px 0 30px rgba(8,41,79,.15);transition:right .3s ease;overflow-y:auto;z-index:120}
  .main-nav.open{right:0}
  .main-nav a{padding:13px 14px;font-size:16px}
  .nav-toggle{display:flex;z-index:130;flex-shrink:0}
  .logo{min-width:0;flex-shrink:1}
  .logo .text .cn{display:block;font-size:14px;max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .logo .text .en{display:none}
  .nav-search{display:none}
  .nav-mask{position:fixed;inset:0;background:rgba(11,31,58,.4);opacity:0;visibility:hidden;transition:.3s;z-index:110}
  .nav-mask.show{opacity:1;visibility:visible}
  .slide{height:440px}
  .slide h2{font-size:28px}
  .biz-grid,.news-grid{grid-template-columns:1fr}
  .case-grid{grid-template-columns:repeat(2,1fr);grid-auto-rows:180px}
  .case-item.big{grid-column:span 2}
  .brand-grid{grid-template-columns:repeat(3,1fr)}
  .footer-main{grid-template-columns:1fr 1fr}
  .section{padding:54px 0}
}
@media (max-width:390px){
  .topbar .links{display:none}
  .slide{height:400px}
  .slide h2{font-size:24px}
  .slide p{font-size:14px}
  .sec-head .zh{font-size:24px}
  .brand-grid{grid-template-columns:repeat(2,1fr)}
  .footer-main{grid-template-columns:1fr}
  .hero .arrow{width:38px;height:38px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}
}

/* ===== CMS 动态内容适配 ===== */
.slide .art{background:linear-gradient(120deg,#062b5e 0%,#0a4da3 60%,#0e63bd 100%) center/cover no-repeat}
.case-item .ph{background:linear-gradient(135deg,#0a4da3 0%,#062b5e 100%) center/cover no-repeat}
.news-card .cover{background:#e8f1fb center/cover no-repeat}
.hero{min-height:420px;background:linear-gradient(120deg,#062b5e,#0a4da3)}
.brand-cell span{font-size:14px}
.flink{max-width:var(--maxw);margin:0 auto;padding:0 20px 10px;font-size:12px;color:#6c7f97;display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.flink a{color:#8fa2ba}
.flink a:hover{color:#fff}

/* ===== 子页：通栏Banner（gree.com 风格） ===== */
.page-head{position:relative;color:#fff;padding:88px 0 66px;text-align:center;background:linear-gradient(135deg,#041e50 0%,#095dd0 100%);overflow:hidden}
.page-head::before{content:'';position:absolute;left:50%;top:-140px;width:620px;height:620px;transform:translateX(-50%);border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.13) 0%,transparent 62%);pointer-events:none}
.page-head::after{content:'';position:absolute;right:-90px;bottom:-160px;width:460px;height:460px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.09) 0%,transparent 65%);pointer-events:none}
.page-head .zh{position:relative;font-size:40px;font-weight:700;letter-spacing:10px;text-indent:10px}
.page-head .crumb{position:relative;margin-top:18px;font-size:13px;color:rgba(255,255,255,.75);letter-spacing:1px}
.page-head .crumb a{color:rgba(255,255,255,.88)}
.page-head .crumb a:hover{color:#fff}

/* ===== 子页：资讯列表（gree infoList 风格：横条卡片+分隔线） ===== */
.list-section{padding:52px 0 72px}
.art-list{display:flex;flex-direction:column}
.art-item{display:flex;gap:30px;padding:30px 0;border-bottom:1px solid #ececec}
.art-item:last-child{border-bottom:0}
.art-item .cover{flex-shrink:0;width:300px;height:184px;border-radius:6px;background:#eef2f7 center/cover no-repeat;display:block;transition:.25s}
.art-item:hover .cover{box-shadow:0 12px 30px rgba(9,93,208,.2)}
.art-item .body{flex:1;display:flex;flex-direction:column;min-width:0;align-self:center}
.art-item h3{font-size:21px;font-weight:600;color:#222;line-height:1.55}
.art-item h3 a{color:inherit;transition:.2s}
.art-item h3 a:hover{color:#095dd0}
.art-item .desc{margin-top:10px;font-size:14px;color:#888;line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.art-item .meta{margin-top:14px;display:flex;justify-content:space-between;align-items:center;font-size:13px;color:#9aa5b1}
.art-item .meta a{color:#095dd0;letter-spacing:1px}
.art-item .meta a:hover{text-decoration:underline}

/* ===== 子页：图文卡片网格（gree videoCenter 风格） ===== */
.img-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.grid-item{background:#fff;border-radius:8px;overflow:hidden;border:1px solid #ececec;transition:.3s}
.grid-item:hover{transform:translateY(-6px);box-shadow:0 16px 40px rgba(4,30,80,.12);border-color:transparent}
.grid-item .cover{display:block;height:210px;background:#eef2f7 center/cover no-repeat}
.grid-item .name{padding:16px 18px 18px}
.grid-item .name a{font-size:16px;font-weight:600;color:#222;display:block;line-height:1.5}
.grid-item .name a:hover{color:#095dd0}
.grid-item .name span{font-size:12px;color:#9aa5b1;margin-top:6px;display:block}

/* ===== 子页：正文/单页（gree newsDetail 风格：白底窄栏） ===== */
.article-wrap{max-width:820px;margin:0 auto}
.article-head h1{font-size:28px;font-weight:700;color:#1a1a1a;line-height:1.5}
.article-head .meta{margin-top:14px;font-size:13px;color:#9aa5b1;display:flex;gap:22px;flex-wrap:wrap;padding-bottom:22px;border-bottom:1px solid #ececec}
.article-body,.single-body{margin-top:30px;font-size:16px;line-height:1.95;color:#333;word-wrap:break-word;overflow-x:auto}
.article-body p,.single-body p{margin:14px 0}
.article-body img,.single-body img{height:auto;margin:12px auto}
.article-body table,.single-body table{max-width:100%}
.article-body h1,.article-body h2,.article-body h3,.single-body h1,.single-body h2,.single-body h3{margin:20px 0 12px;color:#041e50}
.article-body a,.single-body a{color:#095dd0}
.article-body ul,.article-body ol,.single-body ul,.single-body ol{padding-left:22px;list-style:disc}
.prenext{margin-top:44px;padding-top:22px;border-top:1px solid #ececec;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:14px;color:#9aa5b1}
.prenext a{color:#095dd0}
.prenext a:hover{text-decoration:underline}

/* ===== 子页：分页 ===== */
.pages{margin-top:44px;display:flex;justify-content:center;gap:8px;flex-wrap:wrap;font-size:14px}
.pages a,.pages span,.pages li{display:inline-flex;min-width:36px;height:36px;align-items:center;justify-content:center;padding:0 10px;border:1px solid #e3e3e3;border-radius:4px;color:#555;background:#fff;list-style:none}
.pages a:hover{border-color:#095dd0;color:#095dd0}
.pages .current{background:#095dd0;border-color:#095dd0;color:#fff;font-weight:600}

/* ===== 子页：搜索（gree videoCenter 居中搜索框） ===== */
.search-bar{margin:0 auto 36px;max-width:640px}
.search-bar form{display:flex;border-radius:24px;overflow:hidden;background:#fff;border:1px solid #e3e3e3;box-shadow:0 6px 20px rgba(4,30,80,.08)}
.search-bar form:focus-within{border-color:#095dd0}
.search-bar input{flex:1;border:0;outline:none;padding:14px 24px;font-size:15px;color:#333}
.search-bar input::placeholder{color:#9aa5b1}
.search-bar button{padding:0 32px;background:#095dd0;color:#fff;font-size:15px;letter-spacing:3px;text-indent:3px}
.search-bar button:hover{background:#0478c8}

/* ===== 子页：留言/联系 ===== */
.guestbook-tip{font-size:16px;color:#333;line-height:1.9;text-align:center;max-width:640px;margin:0 auto}
.guestbook-note{margin-top:28px;font-size:12px;color:#9aa5b1;line-height:1.8;text-align:center}
.contact-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:36px}
.contact-card{background:#fff;border-radius:8px;border:1px solid #ececec;padding:34px 24px;text-align:center;transition:.25s}
.contact-card:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(4,30,80,.1)}
.contact-card .t{font-size:14px;color:#9aa5b1;letter-spacing:3px;text-indent:3px}
.contact-card .v{margin-top:12px;font-size:21px;font-weight:700;color:#041e50;word-break:break-all}
.contact-card .v.v-sm{font-size:16px;line-height:1.6}
.contact-card .v a{color:#095dd0}
.contact-card .v a:hover{text-decoration:underline}
.empty-tip{padding:70px 0;text-align:center;color:#9aa5b1;font-size:15px}

/* ===== 子页响应式 ===== */
@media (max-width:1024px){
  .contact-cards{grid-template-columns:1fr 1fr}
}
@media (max-width:860px){
  .page-head{padding:56px 0 44px}
  .page-head .zh{font-size:26px;letter-spacing:6px;text-indent:6px}
  .list-section{padding:36px 0 56px}
  .art-item{flex-direction:column;gap:16px;padding:24px 0}
  .art-item .cover{width:100%;height:180px}
  .art-item h3{font-size:17px}
  .img-grid{grid-template-columns:repeat(2,1fr)}
  .contact-cards{grid-template-columns:1fr}
  .article-head h1{font-size:20px}
  .article-body,.single-body{font-size:15px}
}
@media (max-width:390px){
  .img-grid{grid-template-columns:1fr}
  .art-item .cover{height:150px}
}