/* ===== 泰森循环科技 官网样式 ===== */
:root{
  --c-primary:#1a7f5a;
  --c-primary-dark:#0f5c40;
  --c-blue:#1f6fb2;
  --c-dark:#17323f;
  --c-text:#2c3e44;
  --c-muted:#7d8b91;
  --c-bg:#f5f8f7;
  --c-line:#e3ebe8;
  --c-white:#fff;
  --radius:10px;
  --shadow:0 6px 24px rgba(15,92,64,.08);
  --maxw:1200px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{font-family:"Microsoft YaHei","PingFang SC","Hiragino Sans GB","Segoe UI",Arial,sans-serif;color:var(--c-text);background:var(--c-white);line-height:1.75;font-size:15px}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* ---------- 顶部 ---------- */
.topbar{background:var(--c-primary-dark);color:#cfe6dc;font-size:12.5px;padding:6px 0;overflow:hidden;max-height:48px;transition:max-height .28s ease,padding .28s ease,opacity .2s ease}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.topbar a{color:#fff;margin-left:12px}
.lang-switch{cursor:pointer;user-select:none}
.lang-switch b{color:#ffd87a}

/* 导航 */
header.site{background:var(--c-white);box-shadow:0 2px 12px rgba(0,0,0,.06)}
/* 吸顶放在 #siteHeader 层级，否则 sticky 会被限制在自身高度内、滚动后整条头部消失 */
#siteHeader{position:sticky;top:0;z-index:99}
body.scrolled .topbar{max-height:0;padding-top:0;padding-bottom:0;opacity:0}
.nav-bar{display:flex;align-items:center;justify-content:space-between;height:74px}
.nav-logo{display:flex;align-items:center;gap:10px}
.nav-logo img{height:48px;width:auto}
.nav-logo .logo-text{font-size:19px;font-weight:700;color:var(--c-primary-dark);letter-spacing:1px}
nav.main{display:flex;align-items:center;gap:2px}
nav.main>div{position:relative}
nav.main>a,nav.main>div>a{display:block;padding:0 15px;line-height:74px;font-size:15.5px;font-weight:600;color:var(--c-text);position:relative}
nav.main>a:hover,nav.main>div:hover>a{color:var(--c-primary)}
nav.main>div>a::after{content:"";position:absolute;left:15px;right:15px;bottom:16px;height:2px;background:var(--c-primary);transform:scaleX(0);transition:.25s}
nav.main>div:hover>a::after{transform:scaleX(1)}
.submenu{position:absolute;top:74px;left:50%;transform:translateX(-50%) translateY(8px);background:var(--c-white);min-width:190px;border-radius:6px;box-shadow:0 10px 30px rgba(0,0,0,.12);opacity:0;visibility:hidden;transition:.22s;padding:8px 0}
nav.main>div:hover .submenu{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.submenu a{display:block;padding:9px 20px;font-size:14.5px;color:var(--c-text)}
.submenu a:hover{background:var(--c-bg);color:var(--c-primary)}
.nav-toggle{display:none;font-size:26px;background:none;border:0;color:var(--c-primary-dark);cursor:pointer;padding:6px 10px}
.nav-lang{flex:0 0 auto;margin-left:14px;padding:6px 14px;border:1px solid var(--c-line);border-radius:18px;font-size:13px;font-weight:700;color:var(--c-primary-dark);white-space:nowrap;transition:.2s;letter-spacing:.5px}
.nav-lang:hover{background:var(--c-primary);border-color:var(--c-primary);color:#fff}

/* ---------- Banner / 页头 ---------- */
.page-banner{position:relative;height:280px;display:flex;align-items:center;justify-content:center;overflow:hidden;color:#fff;text-align:center}
.page-banner img.bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.page-banner::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(15,92,64,.82),rgba(31,111,178,.55))}
.page-banner h1{position:relative;z-index:2;font-size:36px;letter-spacing:3px}
.page-banner p{position:relative;z-index:2;font-size:15px;opacity:.92;margin-top:8px}
.crumb{position:relative;z-index:2;font-size:13px;margin-top:14px;opacity:.9}

/* ---------- Hero ---------- */
.hero{position:relative;height:620px;overflow:hidden}
.hero .slide{position:absolute;inset:0;opacity:0;transition:opacity 1s;display:flex;align-items:center}
.hero .slide.on{opacity:1}
.hero .slide .img{position:absolute;inset:0;background-size:cover;background-position:center}
.hero .slide::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(9,44,31,.78) 0%,rgba(9,44,31,.35) 60%,rgba(9,44,31,.1) 100%)}
.hero .txt{position:relative;z-index:2;max-width:var(--maxw);margin:0 auto;padding:0 20px;width:100%;color:#fff}
.hero .txt h2{font-size:46px;line-height:1.25;letter-spacing:2px;margin-bottom:16px;text-shadow:0 2px 14px rgba(0,0,0,.3)}
.hero .txt p{font-size:19px;opacity:.95;letter-spacing:1px}
.hero .dots{position:absolute;bottom:26px;left:0;right:0;display:flex;justify-content:center;gap:10px;z-index:3}
.hero .dots i{width:34px;height:4px;background:rgba(255,255,255,.4);border-radius:2px;cursor:pointer;transition:.3s}
.hero .dots i.on{background:#fff}

/* ---------- 统计 ---------- */
.stats{background:var(--c-primary-dark);color:#fff;padding:46px 0}
.stats .grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:26px;text-align:center}
.stats .num{font-size:42px;font-weight:700;font-family:Arial,Helvetica,sans-serif;color:#8fe0c0;line-height:1}
.stats .unit{font-size:17px;margin-left:3px;color:#cfeee0}
.stats .label{font-size:14px;margin-top:10px;opacity:.9}

/* ---------- 通用板块 ---------- */
section.sec{padding:76px 0}
section.sec.alt{background:var(--c-bg)}
.sec-head{text-align:center;margin-bottom:48px}
.sec-head h2{font-size:31px;color:var(--c-dark);letter-spacing:2px}
.sec-head .en{font-size:13px;letter-spacing:3px;color:var(--c-primary);text-transform:uppercase;margin-top:6px}
.sec-head .sub{color:var(--c-muted);margin-top:10px;font-size:15px}
.sec-head::after{content:"";display:block;width:52px;height:3px;background:var(--c-primary);margin:16px auto 0;border-radius:2px}

/* 首页简介 */
.intro .flex{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.intro .pic{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.intro .pic img{width:100%;height:360px;object-fit:cover}
.intro .txt p{margin-bottom:12px;color:var(--c-text);text-align:justify}
.btn{display:inline-block;margin-top:16px;padding:11px 34px;border-radius:30px;background:var(--c-primary);color:#fff;font-size:15px;transition:.25s;border:1px solid var(--c-primary)}
.btn:hover{background:var(--c-primary-dark)}
.btn.ghost{background:transparent;color:var(--c-primary)}
.btn.ghost:hover{background:var(--c-primary);color:#fff}

/* 优势卡片 */
.adv-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:22px}
.adv-card{background:var(--c-white);border-radius:var(--radius);padding:34px 26px;box-shadow:var(--shadow);transition:.3s;position:relative;overflow:hidden}
.adv-card:hover{transform:translateY(-6px)}
.adv-card .idx{position:absolute;right:16px;top:6px;font-size:56px;font-weight:800;color:rgba(26,127,90,.09)}
.adv-card h3{font-size:19px;color:var(--c-primary-dark);margin-bottom:6px}
.adv-card .en{font-size:11.5px;color:var(--c-muted);letter-spacing:1px;text-transform:uppercase;margin-bottom:14px}
.adv-card p{font-size:14px;color:var(--c-muted);line-height:1.8}

/* 表格 */
.tbl-wrap{overflow-x:auto;border-radius:var(--radius);box-shadow:var(--shadow);background:#fff}
table.tbl{width:100%;border-collapse:collapse;font-size:14.5px;min-width:640px}
table.tbl th{background:var(--c-primary);color:#fff;padding:14px 16px;text-align:left;font-weight:600;white-space:nowrap}
table.tbl td{padding:13px 16px;border-bottom:1px solid var(--c-line)}
table.tbl tr:nth-child(even) td{background:#fafdfc}
table.tbl tr:last-child td{border-bottom:0}
table.tbl td.hl{color:var(--c-primary);font-weight:700}

/* CTA */
.cta{background:linear-gradient(100deg,var(--c-primary-dark),var(--c-blue));color:#fff;padding:56px 0;text-align:center}
.cta h3{font-size:26px;letter-spacing:2px;margin-bottom:12px}
.cta p{opacity:.92;max-width:760px;margin:0 auto 20px}

/* 卡片网格（主营业务 / 产品） */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:24px}
.card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.3s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-6px)}
.card .pic{height:200px;overflow:hidden}
.card .pic img{width:100%;height:100%;object-fit:cover;transition:.4s}
.card:hover .pic img{transform:scale(1.06)}
.card .body{padding:22px 22px 26px;flex:1}
.card h3{font-size:18px;color:var(--c-dark);margin-bottom:8px}
.card p{font-size:13.5px;color:var(--c-muted)}
.card .more{display:inline-block;margin-top:14px;color:var(--c-primary);font-size:13.5px}

/* 业务分块（左图右文） */
.biz-block{display:grid;grid-template-columns:460px 1fr;gap:40px;align-items:center;margin-bottom:54px;scroll-margin-top:100px}
.biz-block.rev{grid-template-columns:1fr 460px}
.biz-block .pic{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.biz-block .pic img{width:100%;height:300px;object-fit:cover}
.biz-block h3{font-size:24px;color:var(--c-dark);margin-bottom:6px}
.biz-block .en{font-size:12.5px;color:var(--c-primary);letter-spacing:1px;margin-bottom:14px}
.biz-block p{color:var(--c-text);text-align:justify}

/* 团队 */
.team-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:26px}
.team-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);text-align:center;transition:.3s}
.team-card:hover{transform:translateY(-5px)}
.team-card .pic{height:270px;overflow:hidden;background:#eef3f1}
.team-card .pic img{width:100%;height:100%;object-fit:cover;object-position:top}
.team-card .body{padding:22px}
.team-card h3{font-size:19px;color:var(--c-dark)}
.team-card .role{font-size:13px;color:var(--c-primary);margin:6px 0 12px}
.team-card p{font-size:13px;color:var(--c-muted);text-align:justify}

/* 发展历程 */
.timeline{position:relative;max-width:860px;margin:0 auto;padding-left:30px}
.timeline::before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;background:var(--c-line)}
.tl-item{position:relative;margin-bottom:30px}
.tl-item::before{content:"";position:absolute;left:-27px;top:8px;width:14px;height:14px;border-radius:50%;background:var(--c-primary);border:3px solid #fff;box-shadow:0 0 0 2px var(--c-primary)}
.tl-item .year{font-size:19px;font-weight:700;color:var(--c-primary-dark)}
.tl-item p{color:var(--c-text);margin-top:6px;font-size:14.5px}

/* 荣誉 */
.honor-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:20px}
.honor-card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;transition:.3s}
.honor-card:hover{transform:translateY(-4px)}
.honor-card .pic{height:170px;background:#fff;display:flex;align-items:center;justify-content:center;padding:12px}
.honor-card .pic img{max-height:100%;object-fit:contain}
.honor-card .cap{padding:14px;font-size:13px;color:var(--c-text);line-height:1.6;text-align:center;border-top:1px solid var(--c-line)}

/* 可持续 */
.sus-block{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:38px;margin-bottom:30px;scroll-margin-top:100px}
.sus-block h3{font-size:22px;color:var(--c-primary-dark);display:flex;align-items:center;gap:12px;margin-bottom:14px}
.sus-block h3 .ic{width:38px;height:38px;border-radius:8px;background:var(--c-bg);color:var(--c-primary);display:flex;align-items:center;justify-content:center;font-size:20px}
.sus-block>p{color:var(--c-text);margin-bottom:16px}
.sus-item{border-left:3px solid var(--c-primary);padding:2px 0 2px 18px;margin-bottom:16px}
.sus-item .y{font-weight:700;color:var(--c-dark);font-size:15.5px}
.sus-item p{font-size:14px;color:var(--c-muted);margin-top:4px}

/* 新闻 */
.news-list{max-width:900px;margin:0 auto}
.news-item{display:flex;gap:24px;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;margin-bottom:22px;transition:.3s;align-items:flex-start}
.news-item:hover{transform:translateX(4px)}
.news-item .date{min-width:86px;text-align:center;background:var(--c-bg);border-radius:8px;padding:12px 6px}
.news-item .date b{display:block;font-size:26px;color:var(--c-primary-dark);line-height:1.1}
.news-item .date span{font-size:12.5px;color:var(--c-muted)}
.news-item h3{font-size:17.5px;color:var(--c-dark);margin-bottom:6px}
.news-item p{font-size:13.5px;color:var(--c-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-item .tag{display:inline-block;font-size:11.5px;color:var(--c-primary);background:rgba(26,127,90,.1);padding:2px 10px;border-radius:20px;margin-bottom:8px}
.news-item .pic{width:180px;height:120px;border-radius:8px;overflow:hidden;flex-shrink:0}
.news-item .pic img{width:100%;height:100%;object-fit:cover}
.article{max-width:860px;margin:0 auto;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:44px 48px}
.article h1{font-size:26px;color:var(--c-dark);line-height:1.5;margin-bottom:14px}
.article .meta{font-size:13px;color:var(--c-muted);padding-bottom:20px;border-bottom:1px solid var(--c-line);margin-bottom:26px}
.article img{border-radius:8px;margin:18px auto}
.article p{margin-bottom:14px;text-align:justify}

/* 合作伙伴 */
.partner-cols{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.partner-box{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:32px}
.partner-box h3{font-size:20px;color:var(--c-primary-dark);margin-bottom:6px}
.partner-box>.sub{font-size:13.5px;color:var(--c-muted);margin-bottom:18px}
.partner-box ul li{padding:10px 0 10px 22px;border-bottom:1px dashed var(--c-line);font-size:14.5px;position:relative}
.partner-box ul li:last-child{border-bottom:0}
.partner-box ul li::before{content:"";position:absolute;left:2px;top:19px;width:8px;height:8px;border-radius:50%;background:var(--c-primary)}

/* 招聘 */
.job-item{display:flex;justify-content:space-between;align-items:center;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:20px 26px;margin-bottom:16px}
.job-item h3{font-size:17px;color:var(--c-dark)}
.job-item .meta{font-size:13px;color:var(--c-muted)}

/* 联系 */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.contact-info .blk{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:26px 28px;margin-bottom:18px}
.contact-info .blk h3{font-size:18px;color:var(--c-primary-dark);margin-bottom:12px}
.contact-info .blk p{font-size:14.5px;color:var(--c-text)}
.contact-info .blk .lb{display:inline-block;width:44px;color:var(--c-muted);font-size:13.5px}
form.cform{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:30px}
form.cform h3{font-size:20px;color:var(--c-primary-dark);margin-bottom:18px}
form.cform input,form.cform textarea{width:100%;border:1px solid var(--c-line);border-radius:6px;padding:11px 14px;font-size:14.5px;margin-bottom:14px;font-family:inherit}
form.cform textarea{min-height:120px;resize:vertical}
form.cform input:focus,form.cform textarea:focus{outline:none;border-color:var(--c-primary)}

/* 产品/流程大图 */
.bigpic{border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;background:#fff}
.bigpic img{width:100%}
.flow-note{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:28px 32px;margin-top:22px}
.flow-note p{margin-bottom:10px;text-align:justify}

/* 专利表 */
.ip-sum{background:linear-gradient(100deg,var(--c-primary-dark),var(--c-primary));color:#fff;border-radius:var(--radius);padding:26px 32px;margin-bottom:28px;font-size:16px}

/* 页脚 */
footer{background:#10261f;color:#9db8ad;padding:52px 0 0;font-size:14px}
footer .cols{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:34px;padding-bottom:36px}
footer h4{color:#fff;font-size:16px;margin-bottom:16px;letter-spacing:1px}
footer a:hover{color:#8fe0c0}
footer .fnav li{margin-bottom:8px}
footer .fnav a{color:#9db8ad;font-size:13.5px}
footer .copy{border-top:1px solid rgba(255,255,255,.08);padding:18px 0;text-align:center;font-size:12.5px;color:#7d948a}
footer .copy a{color:#7d948a}
footer .copy a:hover{color:#8fe0c0}

/* 回到顶部 */
#toTop{position:fixed;right:26px;bottom:34px;width:44px;height:44px;border-radius:50%;background:var(--c-primary);color:#fff;border:0;font-size:18px;cursor:pointer;box-shadow:var(--shadow);opacity:0;visibility:hidden;transition:.3s;z-index:98}
#toTop.on{opacity:1;visibility:visible}
#toTop:hover{background:var(--c-primary-dark)}

/* 响应式 */
@media(max-width:960px){
  nav.main{display:none;position:absolute;top:74px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:8px 0 16px;box-shadow:0 14px 24px rgba(0,0,0,.1)}
  nav.main.open{display:flex}
  nav.main>a,nav.main>div>a{line-height:52px}
  nav.main>div:hover>a::after{display:none}
  .submenu{position:static;transform:none;opacity:1;visibility:visible;box-shadow:none;padding:0 0 6px 26px;display:none}
  nav.main>div:hover .submenu{display:block}
  .nav-toggle{display:block}
  .nav-lang{margin-left:auto;padding:5px 12px;font-size:12.5px}
  .nav-toggle{order:10}
  .intro .flex,.contact-grid,.partner-cols{grid-template-columns:1fr}
  .biz-block,.biz-block.rev{grid-template-columns:1fr}
  .biz-block.rev .pic{order:-1}
  .hero{height:460px}
  .hero .txt h2{font-size:29px}
  .hero .txt p{font-size:15px}
  .stats .num{font-size:32px}
  section.sec{padding:52px 0}
  .page-banner{height:200px}
  .page-banner h1{font-size:26px}
  .article{padding:28px 22px}
  footer .cols{grid-template-columns:1fr 1fr}
  .news-item .pic{display:none}
}
@media(max-width:600px){
  footer .cols{grid-template-columns:1fr}
  .news-item{flex-direction:column}
  .news-item .date{min-width:0;display:flex;gap:8px;justify-content:center}
  .partner-cols{grid-template-columns:1fr}
}

/* ---------- 视频中心 ---------- */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:26px}
.video-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);cursor:pointer;transition:.25s}
.video-card:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(15,92,64,.14)}
.video-card .pic{position:relative;padding-top:56.25%;background:#0d1f18;overflow:hidden}
.video-card .pic img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.86;transition:.3s}
.video-card:hover .pic img{opacity:1;transform:scale(1.04)}
.video-card .play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:62px;height:62px;line-height:60px;text-align:center;border-radius:50%;background:rgba(26,127,90,.92);color:#fff;font-size:21px;padding-left:5px;transition:.25s;box-sizing:border-box}
.video-card:hover .play{background:#fff;color:var(--c-primary)}
.video-card .play.dim{width:auto;height:auto;line-height:1.4;border-radius:20px;font-size:13px;padding:7px 16px;background:rgba(0,0,0,.55)}
.video-card .body{padding:16px 18px 20px}
.video-card .body h3{font-size:16.5px;color:var(--c-dark);margin-bottom:6px}
.video-card .body p{font-size:13.5px;color:var(--c-muted);line-height:1.65}
.vmodal{position:fixed;inset:0;background:rgba(6,20,14,.92);z-index:2000;display:none;align-items:center;justify-content:center;padding:24px}
.vmodal.on{display:flex}
.vmodal .vinner{position:relative;width:min(1080px,94vw)}
.vmodal #vbox{position:relative;background:#000;border-radius:var(--radius);overflow:hidden;aspect-ratio:16/9}
.vmodal #vbox video,.vmodal #vbox iframe{width:100%;height:100%;border:0;display:block}
.vmodal .vloading{position:absolute;left:0;top:0;right:0;bottom:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;color:#dfeee7;font-size:15px;text-align:center;background:rgba(0,0,0,.35);pointer-events:none}
.vmodal .vloading small{font-size:12px;opacity:.75}
.vmodal .vloading::before{content:'';width:34px;height:34px;border-radius:50%;border:3px solid rgba(255,255,255,.25);border-top-color:#3d8b66;animation:vspin 1s linear infinite}
@keyframes vspin{to{transform:rotate(360deg)}}
.vmodal .vtitle{color:#eaf6f0;text-align:center;margin-top:14px;font-size:15px}
.vmodal .vclose{position:absolute;right:-6px;top:-46px;width:38px;height:38px;border-radius:50%;border:0;background:rgba(255,255,255,.16);color:#fff;font-size:22px;line-height:1;cursor:pointer}
.vmodal .vclose:hover{background:rgba(255,255,255,.32)}
@media(max-width:600px){
  .video-grid{grid-template-columns:1fr}
  .vmodal .vclose{right:0;top:-42px}
  .vmodal #vbox{aspect-ratio:auto;height:56vw}
}