/* 泽溪源生物 lifetein.com.cn — unified stylesheet (2026) */
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:15px/1.75 -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;color:#1f2933;background:#f4f6f8}
a{color:#0b63b6;text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto;vertical-align:middle}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}

/* header */
.top{background:#fff;border-bottom:3px solid #0b63b6;position:sticky;top:0;z-index:50;box-shadow:0 1px 4px rgba(0,0,0,.06)}
.top .wrap{display:flex;align-items:center;gap:24px;min-height:68px}
.brand{display:flex;flex-direction:column;line-height:1.2;color:#0b3d6e;text-decoration:none!important}
.brand-cn{font-size:24px;font-weight:700;letter-spacing:2px}
.brand-sub{font-size:12px;color:#6b7785;letter-spacing:1px}
.nav{margin-left:auto}
.nav>ul{list-style:none;margin:0;padding:0;display:flex}
.nav li{position:relative}
.nav>ul>li>a{display:block;padding:22px 14px;color:#1f2933;font-size:15px}
.nav>ul>li>a:hover,.nav>ul>li:hover>a{color:#0b63b6;text-decoration:none}
.nav .has-sub>a:after{content:"";display:inline-block;margin-left:5px;border:4px solid transparent;border-top-color:currentColor;vertical-align:-1px}
.nav li ul{list-style:none;margin:0;padding:6px 0;position:absolute;left:0;top:100%;min-width:170px;background:#fff;border:1px solid #e3e8ee;border-top:3px solid #0b63b6;box-shadow:0 6px 18px rgba(0,0,0,.08);display:none}
.nav li:hover>ul,.nav li:focus-within>ul{display:block}
.nav li ul a{display:block;padding:7px 18px;color:#1f2933;white-space:nowrap}
.nav li ul a:hover{background:#eef5fc;color:#0b63b6;text-decoration:none}
.search{display:flex}
.search input[type=text]{width:130px;padding:6px 10px;border:1px solid #cfd8e3;border-radius:4px 0 0 4px;font-size:13px}
.search button{padding:6px 12px;border:0;background:#0b63b6;color:#fff;border-radius:0 4px 4px 0;cursor:pointer;font-size:13px}
.menu-btn{display:none;margin-left:auto;font-size:24px;background:none;border:0;cursor:pointer;color:#0b3d6e}

/* layout */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:28px;padding-top:28px;padding-bottom:40px}
.layout-full,.layout-home{grid-template-columns:minmax(0,1fr)}
.content{background:#fff;border-radius:6px;padding:28px 34px;box-shadow:0 1px 3px rgba(0,0,0,.05);overflow-wrap:break-word}
.content h1{font-size:26px;color:#0b3d6e;margin:0 0 18px;padding-bottom:12px;border-bottom:1px solid #e3e8ee;line-height:1.4}
.content h2{font-size:20px;color:#0b3d6e;margin:28px 0 12px;line-height:1.4}
.content h3{font-size:17px;color:#16324f;margin:22px 0 10px}
.content p{margin:0 0 14px}
.content ul,.content ol{padding-left:1.6em;margin:0 0 14px}
.content table{border-collapse:collapse;margin:12px 0 18px;max-width:100%;font-size:14px}
.content td,.content th{border:1px solid #dfe5ec;padding:6px 10px;vertical-align:top}
.content th{background:#eef3f8}
.content table.imgtable td{border:0;padding:6px 8px;vertical-align:middle}
.content table.imgtable{width:100%}
.content .center{text-align:center}
.content .center table{margin-left:auto;margin-right:auto}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
.tabs section{border-top:1px solid #e3e8ee;margin-top:22px}
.content img{border-radius:3px}

/* sidebar */
.side .box{background:#fff;border-radius:6px;padding:18px 20px;margin-bottom:20px;box-shadow:0 1px 3px rgba(0,0,0,.05)}
.side h3{margin:0 0 10px;font-size:16px;color:#0b3d6e;border-left:4px solid #0b63b6;padding-left:10px}
.side ul{list-style:none;margin:0;padding:0}
.side li a{display:block;padding:7px 0;border-bottom:1px dashed #e3e8ee;color:#1f2933}
.side li a:hover{color:#0b63b6}
.side .contact p{font-size:14px;margin:0 0 10px}
.side .contact img{display:block;max-width:150px;margin:0 auto}

/* home */
.hero{background:linear-gradient(120deg,#0b3d6e,#0b63b6 60%,#2a8bd8);color:#fff;border-radius:8px;padding:56px 48px;position:relative;overflow:hidden}
.hero h1{font-size:38px;margin:0 0 10px;line-height:1.3}
.hero p.lead{font-size:20px;margin:0 0 26px;opacity:.95}
.hero ul{margin:0 0 28px;padding-left:1.2em;font-size:16px}
.btn{display:inline-block;padding:10px 26px;border-radius:4px;background:#fff;color:#0b63b6;font-weight:600}
.btn:hover{text-decoration:none;background:#eef5fc}
.btn-blue{background:#0b63b6;color:#fff}
.btn-blue:hover{background:#094f92}
.section{margin-top:36px}
.section>h2{text-align:center;font-size:26px;color:#0b3d6e;margin:0 0 6px}
.section>p.sub{text-align:center;color:#6b7785;margin:0 0 24px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{background:#fff;border-radius:8px;padding:26px;box-shadow:0 1px 3px rgba(0,0,0,.06);text-align:center}
.card img{height:110px;object-fit:contain;margin-bottom:10px}
.card h3{margin:6px 0 10px;color:#0b3d6e}
.card ul{list-style:none;padding:0;margin:0 0 18px;color:#4a5866}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.tile{display:block;background:#fff;border-radius:8px;overflow:hidden;box-shadow:0 1px 3px rgba(0,0,0,.06);color:#1f2933}
.tile img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block}
.tile span{display:block;padding:10px 12px;font-weight:600;text-align:center}
.tile:hover{text-decoration:none;color:#0b63b6}
.band{background:#fff;border-radius:8px;padding:30px;box-shadow:0 1px 3px rgba(0,0,0,.06)}
.reasons{display:grid;grid-template-columns:repeat(2,1fr);gap:18px 30px}
.reasons h3{margin:0 0 4px;font-size:17px;color:#0b3d6e}
.reasons p{margin:0;color:#4a5866}
.stats{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;text-align:center;margin-top:10px}
.stats b{display:block;font-size:30px;color:#0b63b6}
.promo{display:flex;align-items:center;justify-content:space-between;gap:20px;background:#fff7e6;border:1px solid #ffd591;border-radius:8px;padding:22px 28px}
.promo h2{margin:0;font-size:22px;color:#ad4e00}
.pubs li{margin-bottom:10px}
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.contact-grid .box{border:1px solid #e3e8ee;border-radius:6px;padding:18px 22px}
.contact-grid h2{margin-top:0}

/* footer */
.foot{background:#0b2540;color:#b8c4d1;padding:26px 0;font-size:13px;text-align:center}
.foot p{margin:4px 0}
.foot a{color:#dbe6f2}

@media (max-width:960px){
 .layout{grid-template-columns:minmax(0,1fr)}
 .side{display:grid;grid-template-columns:1fr 1fr;gap:16px}
 .cards{grid-template-columns:1fr 1fr}
 .grid4{grid-template-columns:repeat(2,1fr)}
 .stats{grid-template-columns:repeat(3,1fr)}
 .search{display:none}
}
@media (max-width:760px){
 .menu-btn{display:block}
 .top .wrap{flex-wrap:wrap}
 .nav{display:none;width:100%;margin:0 0 10px}
 .nav.open{display:block}
 .nav>ul{flex-direction:column}
 .nav>ul>li>a{padding:10px 4px;border-top:1px solid #eef1f4}
 .nav li ul{position:static;display:block;border:0;box-shadow:none;padding:0 0 6px 14px}
 .nav li ul a{padding:5px 4px;color:#4a5866}
 .content{padding:20px 16px}
 .content h1{font-size:22px}
 .side{grid-template-columns:1fr}
 .cards,.reasons,.contact-grid{grid-template-columns:1fr}
 .hero{padding:34px 22px}
 .hero h1{font-size:28px}
 .promo{flex-direction:column;text-align:center}
}