*{margin:0;padding:0;box-sizing:border-box;}
:root{
  --tb-blue:#1565c0;
  --tb-blue-dark:#0d47a1;
  --tb-blue-light:#e3f2fd;
  --tb-blue-soft:#f5f9ff;
  --tb-cyan:#0288d1;
  --tb-bg:#fafcff;
  --tb-text:#1a237e;
  --tb-text-light:#455a64;
  --tb-border:#bbdefb;
  --tb-white:#fff;
}
body{font-family:'Noto Sans SC',-apple-system,sans-serif;color:var(--tb-text);background:var(--tb-bg);line-height:1.75;}
.tb-container{max-width:1200px;margin:0 auto;padding:0 20px;}
a{text-decoration:none;color:inherit;}
img{max-width:100%;display:block;}

/* top */
.tb-top{background:var(--tb-blue-dark);color:#bbdefb;font-size:13px;}
.tb-top .tb-container{display:flex;justify-content:space-between;align-items:center;height:36px;}
.tb-teltop{color:#fff;font-weight:700;}

/* nav */
.tb-navwrap{background:var(--tb-white);position:sticky;top:0;z-index:100;box-shadow:0 2px 10px rgba(21,101,192,.08);border-bottom:3px solid var(--tb-blue);}
.tb-navinner{display:flex;justify-content:space-between;align-items:center;height:80px;gap:14px;}
.tb-logo{font-size:21px;font-weight:900;color:var(--tb-blue-dark);}
.tb-logo span{display:block;font-size:11px;color:var(--tb-cyan);font-weight:400;margin-top:2px;letter-spacing:.5px;}
.tb-nav{display:flex;gap:2px;flex-wrap:wrap;}
.tb-nav a{padding:8px 12px;font-size:13px;color:var(--tb-text-light);font-weight:500;border-bottom:3px solid transparent;transition:.2s;margin-bottom:-3px;}
.tb-nav a:hover{color:var(--tb-blue);border-bottom-color:var(--tb-blue);}
.tb-burger{display:none;background:none;border:none;font-size:22px;color:var(--tb-blue);cursor:pointer;}

/* hero */
.tb-hero{background:linear-gradient(120deg,#e3f2fd 0%,#bbdefb 50%,#90caf9 100%);padding:70px 0;}
.tb-herogrid{display:grid;grid-template-columns:1.05fr 1fr;gap:50px;align-items:center;}
.tb-pill{display:inline-block;background:var(--tb-white);color:var(--tb-blue-dark);padding:6px 16px;border-radius:0;font-size:12px;font-weight:700;margin-bottom:20px;border-left:4px solid var(--tb-blue);letter-spacing:1px;}
.tb-hero h1{font-size:42px;color:var(--tb-blue-dark);line-height:1.25;font-weight:900;margin-bottom:20px;}
.tb-hero p{font-size:16px;color:var(--tb-text-light);margin-bottom:28px;}
.tb-herobtns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:20px;}
.tb-btn{display:inline-block;padding:13px 28px;background:var(--tb-blue);color:#fff;font-weight:700;font-size:15px;border:none;cursor:pointer;transition:.2s;font-family:inherit;}
.tb-btn:hover{background:var(--tb-blue-dark);transform:translateY(-2px);box-shadow:0 6px 20px rgba(21,101,192,.3);}
.tb-btn-light{background:var(--tb-white);color:var(--tb-blue-dark);border:2px solid var(--tb-blue);}
.tb-btn-light:hover{background:var(--tb-blue-light);}
.tb-btn-lg{padding:15px 38px;font-size:16px;}
.tb-herotel{display:inline-block;font-size:18px;font-weight:700;color:var(--tb-cyan);}
.tb-heroimg img{border-radius:0;box-shadow:0 20px 50px rgba(21,101,192,.2);}

/* pipes stat */
.tb-pipes{background:var(--tb-white);padding:44px 0;}
.tb-pipesgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.tb-pipecard{background:var(--tb-blue-soft);padding:24px;text-align:center;border:2px solid var(--tb-border);border-radius:0;transition:.2s;}
.tb-pipecard:hover{background:var(--tb-blue);color:#fff;border-color:var(--tb-blue);}
.tb-pipecard:hover p{color:rgba(255,255,255,.9);}
.tb-pipenum{font-size:30px;font-weight:900;color:var(--tb-blue);margin-bottom:8px;}
.tb-pipecard:hover .tb-pipenum{color:#fff;}
.tb-pipecard p{font-size:13px;color:var(--tb-text-light);line-height:1.6;}

/* sections */
section{padding:66px 0;}
.tb-h2{text-align:center;font-size:30px;font-weight:900;color:var(--tb-blue-dark);margin-bottom:12px;}
.tb-subtitle{text-align:center;font-size:15px;color:var(--tb-text-light);max-width:780px;margin:0 auto 44px;line-height:1.8;}

/* about */
.tb-aboutgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.tb-aboutcard{background:var(--tb-white);padding:28px;border:1px solid var(--tb-border);border-left:5px solid var(--tb-blue);}
.tb-aboutcard h3{font-size:17px;color:var(--tb-blue-dark);font-weight:700;margin-bottom:14px;}
.tb-aboutcard ul{list-style:none;}
.tb-aboutcard ul li{font-size:13px;color:var(--tb-text-light);padding:6px 0;padding-left:18px;position:relative;line-height:1.7;}
.tb-aboutcard ul li::before{content:"▹";color:var(--tb-cyan);position:absolute;left:0;}
.tb-aboutcard ul li strong{color:var(--tb-blue);}

/* cause */
.tb-cause{background:var(--tb-blue-soft);}
.tb-causegrid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.tb-causecard{background:var(--tb-white);padding:26px;border-radius:0;border-bottom:4px solid var(--tb-blue);transition:.2s;}
.tb-causecard:hover{box-shadow:0 10px 24px rgba(21,101,192,.1);transform:translateY(-3px);}
.tb-causeicon{font-size:34px;margin-bottom:12px;}
.tb-causecard h3{font-size:16px;color:var(--tb-blue-dark);margin-bottom:10px;font-weight:700;}
.tb-causecard p{font-size:13px;color:var(--tb-text-light);line-height:1.8;}
.tb-causecard p strong{color:var(--tb-blue);}

/* check */
.tb-checkgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-bottom:28px;}
.tb-checkcard{background:var(--tb-white);padding:28px;border:1px solid var(--tb-border);position:relative;border-top:5px solid var(--tb-blue);}
.tb-checktag{position:absolute;top:-1px;right:20px;padding:6px 14px;font-size:12px;color:#fff;font-weight:700;}
.tb-tag-blue{background:var(--tb-blue);}
.tb-tag-purple{background:#7b1fa2;}
.tb-tag-green{background:#2e7d32;}
.tb-tag-orange{background:#ef6c00;}
.tb-checkcard h3{font-size:18px;color:var(--tb-blue-dark);margin-bottom:14px;padding-right:100px;font-weight:700;}
.tb-checkcard p{font-size:13px;color:var(--tb-text-light);margin-bottom:8px;line-height:1.8;}
.tb-checkcard p strong{color:var(--tb-blue);}
.tb-xraynote{background:var(--tb-blue-light);padding:24px 28px;border-left:5px solid var(--tb-blue);}
.tb-xraynote h4{font-size:16px;color:var(--tb-blue-dark);margin-bottom:12px;font-weight:700;}
.tb-xraynote ul{list-style:none;columns:2;gap:30px;}
.tb-xraynote ul li{font-size:13px;color:var(--tb-text-light);padding:5px 0;padding-left:20px;position:relative;line-height:1.7;break-inside:avoid;}
.tb-xraynote ul li::before{content:"✓";color:var(--tb-blue);position:absolute;left:0;font-weight:700;}

/* treatment decision */
.tb-decision{max-width:1000px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.tb-decision-row{display:grid;grid-template-columns:260px 1fr;background:var(--tb-white);border:1px solid var(--tb-border);border-left:5px solid var(--tb-blue);}
.tb-dcase{background:var(--tb-blue-light);padding:18px 22px;border-right:2px solid var(--tb-border);display:flex;align-items:center;}
.tb-dcase h4{font-size:15px;color:var(--tb-blue-dark);font-weight:700;line-height:1.5;}
.tb-dplan{padding:18px 22px;font-size:13px;color:var(--tb-text-light);line-height:1.8;}
.tb-dplan strong{color:var(--tb-blue);}

/* surgery */
.tb-surgery{background:var(--tb-blue-soft);}
.tb-surggrid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.tb-surgcard{background:var(--tb-white);padding:26px;border:1px solid var(--tb-border);}
.tb-surgcard h3{font-size:17px;color:var(--tb-blue-dark);margin-bottom:14px;padding-bottom:10px;border-bottom:3px solid var(--tb-blue-light);font-weight:700;}
.tb-surgcard ul{list-style:none;}
.tb-surgcard ul li{font-size:13px;color:var(--tb-text-light);padding:6px 0;padding-left:18px;position:relative;line-height:1.7;}
.tb-surgcard ul li::before{content:"●";color:var(--tb-cyan);font-size:8px;position:absolute;left:0;top:12px;}
.tb-surgcard ul li strong{color:var(--tb-blue);}

/* ivf */
.tb-ivfgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.tb-ivfcard{background:var(--tb-white);padding:26px;border-radius:0;border-top:4px solid var(--tb-blue);}
.tb-ivfcard h4{font-size:16px;color:var(--tb-blue-dark);margin-bottom:14px;font-weight:700;}
.tb-ivfcard ul{list-style:none;margin-bottom:8px;}
.tb-ivfcard ul li{font-size:13px;color:var(--tb-text-light);padding:5px 0;padding-left:16px;position:relative;line-height:1.7;}
.tb-ivfcard ul li::before{content:"✓";color:var(--tb-blue);font-weight:700;position:absolute;left:0;}
.tb-ivfcard p{font-size:13px;color:var(--tb-text-light);line-height:1.8;margin-bottom:8px;}

/* process */
.tb-procline{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.tb-prostep{background:var(--tb-white);padding:26px;border:1px solid var(--tb-border);position:relative;padding-left:70px;}
.tb-pro-badge{position:absolute;left:20px;top:24px;width:38px;height:38px;background:var(--tb-blue);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:17px;}
.tb-prostep h4{font-size:15px;color:var(--tb-blue-dark);margin-bottom:10px;font-weight:700;}
.tb-prostep p{font-size:13px;color:var(--tb-text-light);line-height:1.7;}

/* faq */
.tb-faqlist{max-width:940px;margin:0 auto;}
.tb-faqitem{background:var(--tb-white);border:1px solid var(--tb-border);margin-bottom:10px;}
.tb-faqitem summary{padding:16px 22px;cursor:pointer;font-weight:700;color:var(--tb-blue-dark);font-size:15px;list-style:none;position:relative;padding-right:44px;background:var(--tb-blue-soft);}
.tb-faqitem summary::after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:22px;color:var(--tb-blue);font-weight:900;transition:.2s;}
.tb-faqitem[open] summary::after{content:"−";}
.tb-faqitem p{padding:16px 22px;font-size:14px;color:var(--tb-text-light);line-height:1.8;}

/* about */
.tb-aboutbox{background:linear-gradient(135deg,var(--tb-blue-light),#fff);padding:50px 40px;text-align:center;border:1px solid var(--tb-border);}
.tb-aboutbox h2{font-size:28px;font-weight:900;color:var(--tb-blue-dark);margin-bottom:14px;}
.tb-aboutbox > p{font-size:15px;color:var(--tb-text-light);max-width:760px;margin:0 auto 36px;}
.tb-about-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;text-align:left;}
.tb-about-grid > div{background:var(--tb-white);padding:24px;border-left:4px solid var(--tb-blue);}
.tb-about-grid h4{font-size:15px;color:var(--tb-blue-dark);margin-bottom:10px;font-weight:700;}
.tb-about-grid p{font-size:13px;color:var(--tb-text-light);line-height:1.7;}

/* news — 强制保留ul.article-cards Grid */
ul.article-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px;list-style:none;margin:0;padding:0;width:100%;box-sizing:border-box;}
ul.article-cards > li.article-card{min-width:0;width:auto;max-width:none;margin:0;float:none;box-sizing:border-box;background:var(--tb-white);overflow:hidden;border:1px solid var(--tb-border);transition:.3s;}
ul.article-cards > li.article-card:hover{transform:translateY(-4px);box-shadow:0 10px 24px rgba(21,101,192,.12);}
.article-card .card-thumb{width:100%;overflow:hidden;}
.article-card .card-thumb img{display:block;width:100%;max-width:100%;height:180px;object-fit:cover;}
.article-card .card-title{overflow-wrap:anywhere;font-size:15px;font-weight:700;color:var(--tb-blue-dark);padding:14px 16px 8px;}
.article-card .card-date{display:block;font-size:12px;color:var(--tb-cyan);padding:0 16px 8px;}
.article-card .card-summary{overflow-wrap:anywhere;font-size:13px;color:var(--tb-text-light);padding:0 16px 16px;line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

/* cta */
.tb-cta{background:linear-gradient(135deg,var(--tb-blue),var(--tb-blue-dark));color:#fff;text-align:center;padding:70px 0;}
.tb-cta h2{font-size:28px;font-weight:900;margin-bottom:14px;}
.tb-cta p{font-size:15px;opacity:.95;margin-bottom:28px;max-width:640px;margin-left:auto;margin-right:auto;}
.tb-cta .tb-btn{background:#fff;color:var(--tb-blue-dark);font-weight:900;}
.tb-cta .tb-btn:hover{background:var(--tb-blue-light);}

/* detail */
.tb-detail{padding:40px 0 60px;background:var(--tb-bg);}
.tb-article{max-width:820px;margin:40px auto 0;background:var(--tb-white);padding:44px;box-shadow:0 4px 20px rgba(21,101,192,.08);border-top:4px solid var(--tb-blue);}
.tb-article h1{font-size:28px;color:var(--tb-blue-dark);font-weight:900;margin-bottom:14px;line-height:1.4;}
.tb-meta{font-size:13px;color:var(--tb-cyan);margin-bottom:24px;padding-bottom:14px;border-bottom:1px dashed var(--tb-border);}
.tb-cover{margin-bottom:24px;}
.tb-cover img{width:100%;height:auto;}
.tb-summary{background:var(--tb-blue-light);padding:18px 22px;border-left:4px solid var(--tb-blue);font-size:15px;color:var(--tb-text-light);margin-bottom:28px;line-height:1.8;}
.tb-content{font-size:15px;line-height:1.9;color:var(--tb-text);}
.tb-content h2,.tb-content h3{color:var(--tb-blue-dark);font-weight:700;margin:28px 0 14px;}
.tb-content h2{font-size:22px;}
.tb-content h3{font-size:18px;}
.tb-content p{margin-bottom:14px;}
.tb-content img{max-width:100%;margin:14px 0;}
.tb-disclaimer{margin-top:36px;padding:20px;background:#fff8e1;border-left:4px solid #ffa000;font-size:13px;color:#795548;}
.tb-disclaimer h4{color:#f57c00;margin-bottom:8px;}
.tb-related{margin-top:40px;padding-top:30px;border-top:1px solid var(--tb-border);}
.tb-related h4{font-size:17px;color:var(--tb-blue-dark);margin-bottom:16px;font-weight:700;}
.tb-rlinks{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:24px;}
.tb-rlinks a{padding:12px;background:var(--tb-blue-light);font-size:14px;color:var(--tb-blue-dark);text-align:center;font-weight:600;}
.tb-rlinks a:hover{background:var(--tb-blue);color:#fff;}
.tb-rcta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}

/* footer */
.tb-footer{background:var(--tb-blue-dark);color:#bbdefb;padding:60px 0 20px;}
.tb-footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:40px;margin-bottom:40px;}
.tb-fbrand h3{color:#fff;font-size:19px;font-weight:900;margin-bottom:14px;}
.tb-fbrand p{font-size:13px;line-height:1.8;margin-bottom:18px;}
.tb-ftel{color:#90caf9;font-size:18px;font-weight:700;}
.tb-footer-grid h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:700;}
.tb-footer-grid a{display:block;font-size:13px;color:#90caf9;padding:5px 0;}
.tb-footer-grid a:hover{color:#fff;}
.tb-copy{border-top:1px solid #1565c0;padding-top:20px;font-size:12px;display:flex;gap:24px;flex-wrap:wrap;justify-content:center;}
.tb-copy a{color:#90caf9;}
.tb-copy a:hover{color:#fff;}

@media(max-width:960px){
  .tb-burger{display:block;}
  .tb-nav{display:none;position:absolute;top:80px;left:0;right:0;background:var(--tb-white);flex-direction:column;padding:10px 20px;gap:0;box-shadow:0 4px 16px rgba(0,0,0,.08);}
  .tb-nav.tb-open{display:flex;}
  .tb-nav a{padding:12px 0;border-bottom:1px solid var(--tb-border);margin-bottom:0;}
  .tb-herogrid{grid-template-columns:1fr;}
  .tb-hero h1{font-size:32px;}
  .tb-pipesgrid,.tb-aboutgrid,.tb-causegrid,.tb-checkgrid,.tb-surggrid,.tb-ivfgrid,.tb-procline,.tb-about-grid,.tb-rlinks,.tb-footer-grid{grid-template-columns:1fr!important;}
  .tb-decision-row{grid-template-columns:1fr!important;}
  .tb-dcase{border-right:none;border-bottom:2px solid var(--tb-border);}
  .tb-xraynote ul{columns:1!important;}
  .tb-article{padding:24px;}
  section{padding:50px 0;}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;}}