:root{
  --primary:#0d9488; --primary-dark:#0f766e; --accent:#14b8a6;
  --ink:#0f172a; --muted:#64748b; --bg:#f8fafc; --alt:#eef6f5;
  --line:#e2e8f0; --white:#fff; --radius:14px; --shadow:0 6px 24px rgba(15,23,42,.08);
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:1140px;margin:0 auto;padding:0 20px}
.muted{color:var(--muted)}
.small{font-size:13px}
.center{text-align:center;margin-top:28px}

/* buttons */
.btn{display:inline-block;padding:12px 26px;border-radius:999px;font-weight:600;cursor:pointer;border:1px solid transparent;transition:.2s;font-size:15px}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark)}
.btn-ghost{background:transparent;border-color:var(--primary);color:var(--primary)}
.btn-ghost:hover{background:var(--primary);color:#fff}
.btn-sm{padding:7px 14px;font-size:13px}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:8px;font-weight:800;font-size:18px}
.brand-logo{height:56px;width:auto;display:block}
.brand-mark{color:var(--primary);font-size:20px}
.main-nav{display:flex;gap:26px}
.main-nav a{color:var(--ink);font-weight:500;padding:6px 0;position:relative}
.main-nav a.active,.main-nav a:hover{color:var(--primary)}
.main-nav a.active::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--primary)}
.nav-toggle{display:none;background:none;border:none;font-size:24px;cursor:pointer}

/* hero */
.hero{background:linear-gradient(135deg,#0f766e,#14b8a6);color:#fff;padding:84px 0 70px}
.hero h1{font-size:40px;line-height:1.25;max-width:760px}
.hero-sub{font-size:18px;opacity:.95;margin:18px 0 30px;max-width:680px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero .btn-ghost{color:#fff;border-color:#fff}
.hero .btn-ghost:hover{background:#fff;color:var(--primary)}

/* stats */
.stats{background:var(--white);border-bottom:1px solid var(--line)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:34px 20px}
.stat{text-align:center}
.stat-num{font-size:30px;font-weight:800;color:var(--primary)}
.stat-label{color:var(--muted);font-size:14px;margin-top:4px}

/* sections */
.section{padding:64px 0}
.section-alt{background:var(--alt)}
.section-head{text-align:center;margin-bottom:38px}
.section-head h2{font-size:30px}
.section-head .muted{margin-top:8px}
.section-intro{max-width:820px;margin:0 auto 30px;line-height:1.8;color:var(--muted)}
.case-meta{font-size:13px;color:var(--primary);margin-bottom:18px;font-weight:600}
.card p.muted{margin-top:2px;line-height:1.6;font-size:14px}

/* product list */
.product-group{margin-bottom:48px}
.product-cat{font-size:24px;margin-bottom:8px}
.product-list{margin-top:18px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--white)}
.product-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 18px;border-bottom:1px solid var(--line)}
.product-row:last-child{border-bottom:none}
.product-info{min-width:0}
.product-name{font-weight:600;font-size:15px}
.product-latin{font-size:13px;color:var(--muted);margin-top:2px;font-style:italic}
.product-empty{margin-top:18px}
.product-search{margin:14px 0 4px}
.product-search input{width:100%;max-width:380px;padding:10px 14px;border:1px solid var(--line);border-radius:var(--radius);font-size:14px;background:var(--white)}
.product-search input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(37,99,235,.12)}
.product-pager{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-top:16px}
.product-pager .pager-info{font-size:13px;color:var(--muted);margin-right:8px}
.product-pager button{min-width:34px;height:34px;padding:0 10px;border:1px solid var(--line);background:var(--white);border-radius:8px;cursor:pointer;font-size:13px;color:var(--text)}
.product-pager button:hover:not(:disabled){border-color:var(--accent)}
.product-pager button.active{background:var(--accent);color:#fff;border-color:var(--accent)}
.product-pager button:disabled{opacity:.45;cursor:not-allowed}
.btn-sm{font-size:13px;padding:6px 14px;border-radius:var(--radius)}
@media(max-width:600px){.product-row{flex-direction:column;align-items:flex-start;gap:10px}}

/* cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);transition:.2s}
.card:hover{transform:translateY(-4px);border-color:var(--primary)}
.card-icon{font-size:30px;margin-bottom:10px}
.card h3{font-size:19px;margin-bottom:8px}
.card-link{display:block;text-decoration:none;color:inherit}

/* two col */
.two-col{display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:start}
.about-aside{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
.badge{display:inline-block;background:var(--primary);color:#fff;font-weight:700;padding:6px 14px;border-radius:999px;margin-bottom:12px}

/* cta */
.cta{background:linear-gradient(135deg,#0f766e,#14b8a6);color:#fff;text-align:center;padding:60px 0}
.cta h2{font-size:28px}
.cta p{margin:12px 0 24px;opacity:.95}

/* page hero */
.page-hero{background:var(--white);border-bottom:1px solid var(--line);padding:48px 0}
.page-hero h1{font-size:32px}
.crumb{color:var(--muted);font-size:14px;margin-bottom:10px}
.crumb a{color:var(--primary)}
.svc-group{margin-bottom:40px;scroll-margin-top:88px}
.svc-cat{font-size:22px;margin-bottom:18px;padding-left:12px;border-left:4px solid var(--primary)}

/* prose */
.prose{max-width:820px}
.prose p{margin:14px 0}
.prose .indent{margin-left:18px;color:var(--ink)}
.refs{margin:10px 0 0 20px}
.refs li{margin:6px 0;color:var(--muted);font-size:14px}
/* service table */
.svc-table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14px;line-height:1.6;background:#fff}
.svc-table caption{font-weight:600;color:var(--ink);text-align:left;padding:6px 0 10px;font-size:15px}
.svc-table th,.svc-table td{border:1px solid #e2e6ee;padding:12px 14px;vertical-align:top;text-align:left}
.svc-table thead th{background:var(--primary);color:#fff;font-weight:600;white-space:nowrap}
.svc-table tbody tr:nth-child(even){background:#f7f9fc}
.svc-table tbody tr:hover{background:#eef3fb}
.svc-table .svc-yeast{font-weight:600;color:var(--ink);white-space:nowrap}
.svc-table .svc-yeast br{line-height:1.3}
.tag{display:inline-block;background:var(--alt);color:var(--primary);font-size:12px;padding:3px 10px;border-radius:999px;margin-bottom:8px}

/* contact */
.contact-list{list-style:none;margin-top:16px}
.contact-list li{margin:10px 0}
.contact-form{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.contact-form label{display:block;font-weight:600;margin:14px 0 6px}
.contact-form input,.contact-form textarea{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:10px;font:inherit;font-weight:400}
.contact-form .btn{margin-top:18px}
.alert{background:#fef3c7;color:#92400e;padding:12px 16px;border-radius:10px;margin:14px 0}
.alert.ok{background:#dcfce7;color:#166534}
.qr-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:20px}
.qr-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:20px;text-align:center;box-shadow:var(--shadow)}
.qr-card img{width:150px;height:auto;display:block;margin:0 auto 10px;image-rendering:pixelated}
.qr-card p{margin:0;font-size:14px;color:var(--muted)}
.footer-qr-group{display:flex;gap:10px;flex-wrap:wrap;margin-top:8px}

/* lab / 设备展示 */
.lab-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.lab-photo{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow)}
.equipment-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.equipment-card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);background:#fff;display:flex;flex-direction:column}
.equipment-photo{aspect-ratio:4/3;overflow:hidden;background:#0f172a}
.equipment-photo img{width:100%;height:100%;object-fit:cover;display:block}
.equipment-info{padding:16px 18px 20px}
.equipment-info h3{font-size:16px;margin:0 0 4px;line-height:1.35}
.equipment-brand{font-size:12px;color:var(--accent);font-weight:700;letter-spacing:.3px;margin-bottom:8px}
.equipment-info p{font-size:13.5px;color:#475569;margin:0;line-height:1.65}

/* footer */
.site-footer{background:var(--ink);color:#cbd5e1;padding:48px 0 24px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px}
.footer-brand{font-size:18px;font-weight:800;color:#fff;margin-bottom:10px}
.site-footer h4{color:#fff;margin-bottom:12px}
.site-footer p{margin:6px 0;font-size:14px}
.site-footer a:hover{color:var(--accent)}
.footer-qr{width:100px;height:auto;margin-top:10px;border-radius:8px;border:1px solid #334155}
.footer-bottom{display:flex;justify-content:space-between;border-top:1px solid #334155;margin-top:30px;padding-top:18px;font-size:13px;color:#94a3b8}

/* admin */
.login-wrap{min-height:80vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#0f766e,#14b8a6)}
.login-box{background:#fff;border-radius:var(--radius);padding:36px;width:340px;box-shadow:var(--shadow)}
.login-box .brand{font-size:20px;font-weight:800;margin-bottom:18px}
.login-box label{display:block;font-weight:600;margin:14px 0 6px;font-size:14px}
.login-box input{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;font:inherit}
.login-box .btn{width:100%;margin-top:18px}
.admin-bar{background:var(--ink);color:#fff;padding:14px 0}
.admin-bar-in{display:flex;justify-content:space-between;align-items:center}
.admin-bar a{color:#fff}
.admin-main{padding:34px 0 70px}
.admin-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin-bottom:22px;box-shadow:var(--shadow)}
.json-editor{width:100%;height:440px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px;line-height:1.5;padding:14px;border:1px solid var(--line);border-radius:10px;background:#0f172a;color:#e2e8f0;white-space:pre}
.pw-form label{display:block;font-weight:600;margin:10px 0 6px;font-size:14px}
.pw-form input{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;font:inherit}
.pw-form .btn{margin-top:14px}

/* case detail */
.case-body{margin-top:10px}
.case-section{margin:30px 0}
.case-section h2{font-size:22px;color:var(--ink);margin-bottom:14px;padding-bottom:8px;border-bottom:2px solid var(--line)}
.case-section p{line-height:1.9;color:var(--text)}
.case-section ul,.case-section ol{margin:10px 0 10px 22px}
.case-section li{margin:8px 0;line-height:1.8}
.case-section strong{color:var(--ink)}
.case-section em{font-style:italic;color:#334155}
.case-gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:18px}
.case-figure{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:var(--shadow)}
.case-figure img{width:100%;height:180px;object-fit:cover;display:block}
.case-figure figcaption{padding:10px 12px;font-size:13px;color:var(--muted);text-align:center;background:#f8fafc}

/* responsive */
@media(max-width:860px){
  .nav-toggle{display:block}
  .main-nav{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;padding:14px 20px;border-bottom:1px solid var(--line)}
  .main-nav.open{display:flex}
  .hero h1{font-size:30px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .cards{grid-template-columns:1fr}
  .two-col{grid-template-columns:1fr}
  .lab-grid{grid-template-columns:1fr}
  .equipment-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .case-gallery{grid-template-columns:1fr}
}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:10px;margin-top:8px}
.faq-item{border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:0 16px;box-shadow:var(--shadow)}
.faq-item summary{cursor:pointer;font-weight:600;padding:14px 4px;list-style:none;outline:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"+";display:inline-block;width:20px;color:var(--brand);font-weight:700}
.faq-item[open] summary::before{content:"\2212"}
.faq-item p{margin:0 4px 14px;color:var(--text);line-height:1.8}