:root{--c-primary:#7a4fb8;--font:'Microsoft YaHei','PingFang SC',sans-serif;}
/* ============ 启生生物科技 DNA螺旋风 ============ */
:root {
  --purple:#7a4fb8;
  --purple-d:#5c3890;
  --green:#38b26a;
  --white:#f9f7ff;
  --dark:#2c2440;
  --text:#6a6182;
  --line:#e6e0f2;
  --bg2:#f1edf9;
  --shadow:0 16px 38px rgba(122,79,184,.14);
}
* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { font-family:"Microsoft YaHei","PingFang SC",sans-serif; color:var(--text); background:var(--white); overflow-x:hidden; font-size:17px; }
a { text-decoration:none; color:inherit; }
ul { list-style:none; }
img { max-width:100%; display:block; }
.container { max-width:1200px; margin:0 auto; padding:0 24px; }

/* ---------- 导航 ---------- */
.site-header { position:fixed; top:0; left:0; right:0; z-index:999; background:rgba(249,247,255,.95); backdrop-filter:blur(10px); box-shadow:0 2px 12px rgba(122,79,184,.12); }
.nav-wrap { display:flex; align-items:center; justify-content:space-between; height:78px; }
.logo { display:flex; align-items:center; gap:12px; }
.logo-dna { width:46px; height:46px; border-radius:50%; background:var(--white); border:2px solid var(--purple); position:relative; display:flex; align-items:center; justify-content:center; overflow:hidden; }
.logo-dna i { position:absolute; width:5px; height:34px; background:linear-gradient(var(--purple),var(--green)); border-radius:3px; transform:rotate(24deg); }
.logo-dna i:last-child { transform:rotate(-24deg); }
.logo-dna b { width:22px; height:5px; background:rgba(122,79,184,.25); transform:rotate(-24deg); position:relative; z-index:2; }
.logo-text { font-weight:800; font-size:22px; color:var(--dark); display:flex; flex-direction:column; line-height:1.15; }
.logo-text span { font-size:11px; font-weight:500; color:var(--green); letter-spacing:2px; }
.main-nav { display:flex; gap:6px; }
.main-nav a { padding:11px 17px; border-radius:12px; font-size:16px; font-weight:600; color:var(--dark); transition:.3s; }
.main-nav a:hover { color:var(--purple); background:#f0eafa; }
.main-nav a.active { color:#fff; background:linear-gradient(135deg,var(--purple),var(--green)); box-shadow:0 8px 18px rgba(122,79,184,.3); }
.nav-toggle { display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:8px; }
.nav-toggle span { width:26px; height:3px; background:var(--dark); border-radius:2px; transition:.3s; }

/* ---------- Hero ---------- */
.hero { position:relative; padding:180px 0 110px; background:linear-gradient(160deg,#f1ebfd 0%,var(--white) 55%,#eaf7f0 100%); overflow:hidden; }
.hero-dna-wrap { position:absolute; right:6%; top:50%; transform:translateY(-50%); width:300px; height:460px; display:flex; align-items:center; justify-content:center; perspective:900px; }
.dna-glow { position:absolute; width:300px; height:300px; border-radius:50%; background:radial-gradient(circle,rgba(122,79,184,.16),rgba(56,178,106,.1),transparent 70%); filter:blur(10px); }
.dna-svg { width:220px; height:460px; transform-style:preserve-3d; animation:dnaSpin 14s linear infinite; filter:drop-shadow(0 10px 20px rgba(122,79,184,.25)); }
@keyframes dnaSpin { from{ transform:rotateY(0deg);} to{ transform:rotateY(360deg);} }
.hero-inner { position:relative; }
.hero-text { max-width:620px; }
.hero-tag { display:inline-block; padding:9px 22px; background:#fff; border-radius:30px; font-size:15px; color:var(--purple); font-weight:700; box-shadow:0 6px 18px rgba(122,79,184,.14); margin-bottom:24px; }
.hero h1 { font-size:46px; line-height:1.35; color:var(--dark); font-weight:800; margin-bottom:22px; }
.hero h1 span { color:var(--green); position:relative; }
.hero h1 span::after { content:""; position:absolute; left:0; right:0; bottom:4px; height:12px; background:rgba(56,178,106,.22); border-radius:4px; z-index:-1; }
.hero-text p { font-size:18px; line-height:2; margin-bottom:32px; max-width:520px; }
.hero-actions { display:flex; gap:16px; }
.btn { display:inline-block; padding:15px 34px; border-radius:14px; font-weight:700; font-size:17px; transition:.3s; border:1px solid transparent; cursor:pointer; }
.btn-primary { background:linear-gradient(135deg,var(--purple),#8a5cc9); color:#fff; box-shadow:0 10px 24px rgba(122,79,184,.32); }
.btn-primary:hover { transform:translateY(-3px); box-shadow:0 16px 30px rgba(122,79,184,.4); }
.btn-outline { background:transparent; color:var(--purple); border-color:var(--purple); }
.btn-outline:hover { background:var(--purple); color:#fff; }
.btn-light { background:#fff; color:var(--purple); box-shadow:0 10px 24px rgba(0,0,0,.1); }
.btn-outline-light { background:transparent; border:1px solid rgba(255,255,255,.8); color:#fff; }
.btn-block { display:block; width:100%; text-align:center; }
.hero-meta { display:flex; gap:36px; margin-top:36px; flex-wrap:wrap; font-size:16px; color:var(--text); }
.hero-meta b { display:block; font-size:28px; color:var(--purple); font-weight:800; }
.hero-meta span { line-height:1.3; }

/* ---------- 螺旋分隔条 ---------- */
.helix-divider { height:40px; background:linear-gradient(180deg,#eaf7f0,#fff); }
.helix-divider svg { width:100%; height:100%; display:block; }
.helix-rev { background:linear-gradient(180deg,#fff,#f1edf9); }

/* ---------- 通用 Section ---------- */
.section { padding:96px 0; }
.section-head { text-align:center; max-width:680px; margin:0 auto 56px; }
.kicker { display:inline-block; font-size:15px; font-weight:700; letter-spacing:3px; color:var(--green); margin-bottom:14px; }
.section-head h2 { font-size:40px; font-weight:800; color:var(--dark); margin-bottom:16px; line-height:1.35; }
.section-head h2 span { color:var(--purple); }
.section-head p { font-size:17px; color:var(--text); opacity:.9; }

/* ---------- 生命科学 ---------- */
.life { background:linear-gradient(180deg,#fff,var(--white)); }
.life-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:26px; }
.life-card { background:#fff; border-radius:26px; padding:40px 26px; text-align:center; box-shadow:var(--shadow); transition:.35s; position:relative; overflow:hidden; }
.life-card::before { content:""; position:absolute; top:-40px; right:-40px; width:90px; height:90px; border-radius:50%; background:radial-gradient(circle,rgba(122,79,184,.14),transparent 70%); }
.life-card:hover { transform:translateY(-8px); }
.mol-ic { width:64px; height:56px; margin-bottom:18px; }
.life-card h3 { font-size:20px; color:var(--dark); margin-bottom:12px; }
.life-card p { font-size:15px; line-height:1.9; opacity:.88; }

/* ---------- 研发管线 ---------- */
.rnd { background:linear-gradient(180deg,var(--white),var(--bg2)); }
.pipeline-wrap { max-width:980px; margin:0 auto; }
.pipe-track { display:grid; grid-template-columns:repeat(4,1fr); gap:20px; text-align:center; }
.pipe-stage { position:relative; background:#fff; border-radius:20px; padding:26px 14px; box-shadow:var(--shadow); }
.ps-dot { display:block; width:22px; height:22px; border-radius:50%; background:linear-gradient(135deg,var(--purple),var(--green)); margin:0 auto 14px; box-shadow:0 0 0 8px rgba(122,79,184,.12); }
.pipe-stage h3 { font-size:17px; color:var(--dark); margin-bottom:6px; }
.pipe-stage p { font-size:14px; color:var(--purple); font-weight:700; }
.pipe-bar { height:16px; background:var(--line); border-radius:8px; margin:34px 0; position:relative; overflow:hidden; }
.pipe-bar i { position:absolute; inset:0; width:70%; background:linear-gradient(90deg,var(--purple),var(--green)); border-radius:8px; }
.pipe-projects { display:grid; grid-template-columns:repeat(3,1fr); gap:26px; }
.pj-card { background:#fff; border-radius:24px 24px 24px 6px; padding:30px 26px; box-shadow:var(--shadow); transition:.35s; }
.pj-card:hover { transform:translateY(-6px); }
.pj-tag { display:inline-block; font-size:13px; font-weight:800; padding:7px 18px; border-radius:20px; margin-bottom:14px; }
.tag-1 { background:#f2eafd; color:var(--purple); }
.tag-2 { background:#e6f6ed; color:var(--green); }
.tag-3 { background:#e9f2ff; color:#2a7bd5; }
.pj-card h3 { font-size:19px; color:var(--dark); margin-bottom:12px; }
.pj-card p { font-size:15px; line-height:1.9; opacity:.88; }

/* ---------- 实验室 ---------- */
.lab { background:linear-gradient(180deg,var(--bg2),#fff); }
.lab-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; }
.lab-card { background:#fff; border-radius:22px; overflow:hidden; box-shadow:var(--shadow); transition:.35s; }
.lab-card:hover { transform:translateY(-6px); }
.lab-card img { width:100%; height:180px; object-fit:cover; }
.lab-cap { padding:22px; }
.lab-cap h3 { font-size:18px; color:var(--dark); margin-bottom:8px; }
.lab-cap p { font-size:14px; line-height:1.8; opacity:.88; }

/* ---------- 新闻 ---------- */
.news { background:linear-gradient(180deg,#fff,var(--white)); }
.news-row { display:grid; grid-template-columns:repeat(3,1fr); gap:28px; }
.news-card { background:#fff; border-radius:24px; overflow:hidden; box-shadow:var(--shadow); transition:.35s; }
.news-card:hover { transform:translateY(-6px); }
.news-card img { width:100%; height:200px; object-fit:cover; }
.news-body { padding:26px; }
.news-body time { font-size:14px; color:var(--green); font-weight:700; }
.news-body h3 { font-size:19px; color:var(--dark); margin:12px 0; line-height:1.6; }
.news-body p { font-size:15px; line-height:1.9; opacity:.88; }
.center-btn { text-align:center; margin-top:44px; }

/* ---------- CTA ---------- */
.cta-dna { background:linear-gradient(135deg,var(--purple),#6a3aa5 55%,var(--green)); border-radius:30px 30px 30px 8px; padding:60px; text-align:center; color:#fff; position:relative; overflow:hidden; box-shadow:0 24px 50px rgba(122,79,184,.32); }
.cta-helix { position:absolute; right:-40px; top:50%; transform:translateY(-50%); width:220px; height:140px; opacity:.7; }
.cta-dna h2 { font-size:34px; font-weight:800; margin-bottom:16px; position:relative; }
.cta-dna p { font-size:17px; opacity:.95; margin-bottom:32px; position:relative; }
.cta-actions { display:flex; gap:16px; justify-content:center; position:relative; }

/* ---------- 页脚 ---------- */
.site-footer { background:var(--dark); color:#cdc2e3; padding:60px 0 0; }
.footer-grid { display:grid; grid-template-columns:1.4fr 1fr 1.2fr; gap:40px; padding-bottom:36px; }
.footer-brand h3 { font-size:21px; color:#fff; margin-bottom:14px; }
.footer-brand p { font-size:16px; line-height:1.9; opacity:.85; }
.footer-links h4 { font-size:17px; color:#fff; margin-bottom:16px; }
.footer-links a { display:block; font-size:16px; padding:7px 0; opacity:.85; transition:.3s; }
.footer-links a:hover { color:#8fe3b0; padding-left:6px; }
.footer-links p { font-size:16px; padding:5px 0; opacity:.85; line-height:1.8; }
.footer-bottom { border-top:1px solid rgba(255,255,255,.14); padding:20px 0; text-align:center; font-size:15px; opacity:.75; }

/* ---------- 内页 ---------- */
.page-hero { padding:180px 0 84px; text-align:center; background:linear-gradient(160deg,#f1ebfd,var(--white)); position:relative; overflow:hidden; }
.page-hero::after { content:""; position:absolute; width:560px; height:120px; left:50%; bottom:-80px; transform:translateX(-50%); border-radius:50%; background:radial-gradient(50% 50% at 50% 50%,rgba(122,79,184,.1),transparent 70%); }
.page-hero .container { position:relative; }
.page-hero .kicker { color:var(--green); }
.page-hero h1 { font-size:44px; color:var(--dark); font-weight:800; margin:8px 0 16px; }
.page-hero h1 span { color:var(--purple); }
.page-hero p { font-size:18px; color:var(--text); opacity:.9; }

/* about */
.about-grid { display:grid; grid-template-columns:1fr 1.1fr; gap:56px; align-items:center; }
.about-img { position:relative; }
.about-img img { width:100%; height:430px; object-fit:cover; border-radius:26px 26px 26px 6px; box-shadow:var(--shadow); }
.img-badge { position:absolute; top:20px; left:20px; background:linear-gradient(135deg,var(--purple),var(--green)); color:#fff; font-weight:800; letter-spacing:2px; font-size:14px; padding:10px 22px; border-radius:30px; box-shadow:0 8px 20px rgba(0,0,0,.2); }
.about-text h2 { font-size:32px; color:var(--dark); margin-bottom:18px; }
.about-text h2 span { color:var(--purple); }
.about-text p { font-size:17px; line-height:2; margin-bottom:16px; }
.about-note { background:#fff; border-radius:20px; padding:24px; border-left:6px solid var(--green); margin-top:18px; box-shadow:var(--shadow); }
.about-note p { margin:0; }

/* team */
.team-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:30px; max-width:860px; margin:0 auto; }
.team-card { background:#fff; border-radius:26px; overflow:hidden; box-shadow:var(--shadow); transition:.35s; display:grid; grid-template-columns:210px 1fr; }
.team-card:hover { transform:translateY(-6px); }
.team-card img { width:100%; height:100%; min-height:240px; object-fit:cover; }
.team-body { padding:30px; }
.team-body h3 { font-size:21px; color:var(--dark); margin-bottom:6px; }
.team-body span { font-size:14px; color:var(--purple); font-weight:700; }
.team-body p { font-size:15px; line-height:1.9; margin-top:14px; opacity:.9; }

/* value */
.value-row { display:grid; grid-template-columns:repeat(3,1fr); gap:28px; }
.value-item { text-align:center; background:#fff; border-radius:26px; padding:44px 28px; box-shadow:var(--shadow); position:relative; overflow:hidden; }
.vi-no { font-size:44px; font-weight:800; color:rgba(122,79,184,.16); display:block; margin-bottom:10px; }
.value-item h3 { font-size:21px; color:var(--dark); margin-bottom:14px; }
.value-item p { font-size:15px; line-height:1.9; opacity:.88; }

/* products */
.prod-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:28px; }
.prod-card { background:#fff; border-radius:26px 26px 26px 6px; overflow:hidden; box-shadow:var(--shadow); transition:.35s; }
.prod-card:hover { transform:translateY(-6px); }
.prod-mol { height:170px; display:flex; align-items:center; justify-content:center; background:linear-gradient(135deg,var(--purple),var(--green)); }
.prod-mol .mol-ic { width:70px; height:60px; margin:0; filter:drop-shadow(0 6px 14px rgba(0,0,0,.2)); }
.prod-body { padding:28px 26px; }
.prod-tag { display:inline-block; font-size:13px; font-weight:800; padding:7px 18px; border-radius:20px; background:#f2eafd; color:var(--purple); margin-bottom:14px; }
.prod-body h3 { font-size:20px; color:var(--dark); margin-bottom:12px; line-height:1.5; }
.prod-body p { font-size:15px; line-height:1.9; opacity:.88; }

/* svc */
.svc-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; }
.svc-card { background:#fff; border-radius:24px; padding:34px 24px; text-align:center; box-shadow:var(--shadow); transition:.35s; }
.svc-card:hover { transform:translateY(-6px); }
.svc-ic { display:inline-flex; width:68px; height:68px; border-radius:50%; background:linear-gradient(135deg,#f1ebfd,#e7f6ee); align-items:center; justify-content:center; font-size:32px; margin-bottom:18px; }
.svc-card h3 { font-size:19px; color:var(--dark); margin-bottom:12px; }
.svc-card p { font-size:15px; line-height:1.9; opacity:.88; }

/* news grid */
.news-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:28px; }

/* contact */
.contact-wrap { display:grid; grid-template-columns:1fr 1.15fr; gap:50px; align-items:start; }
.ct-card { display:flex; gap:16px; padding:20px; background:#fff; border-radius:20px; box-shadow:var(--shadow); margin-bottom:18px; }
.ct-dna { width:56px; height:56px; border-radius:50%; background:linear-gradient(135deg,#f1ebfd,#e7f6ee); display:flex; align-items:center; justify-content:center; font-size:26px; flex:0 0 56px; }
.ct-card h4 { font-size:18px; color:var(--dark); margin-bottom:6px; }
.ct-card p { font-size:15px; opacity:.9; line-height:1.7; }
.map-box { border-radius:20px; overflow:hidden; box-shadow:var(--shadow); }
.map-box img { width:100%; height:220px; object-fit:cover; }
.form-box { background:#fff; border-radius:28px; padding:40px; box-shadow:var(--shadow); }
.form-box h3 { font-size:24px; color:var(--dark); margin-bottom:26px; }
.form-grid { display:grid; grid-template-columns:1fr 1fr; gap:18px; }
.form-field { margin-bottom:18px; }
.form-field label { display:block; font-size:15px; font-weight:700; color:var(--dark); margin-bottom:8px; }
.form-field input,.form-field select,.form-field textarea { width:100%; padding:14px 16px; border:1px solid var(--line); border-radius:14px; font-size:15px; font-family:inherit; background:#fbfaff; transition:.3s; outline:none; }
.form-field textarea { min-height:120px; resize:vertical; }
.form-field input:focus,.form-field select:focus,.form-field textarea:focus { border-color:var(--purple); box-shadow:0 0 0 3px rgba(122,79,184,.12); background:#fff; }
.form-field.full { grid-column:span 2; }
.form-error { color:#e0485a; font-size:14px; margin-top:6px; display:none; }
.form-field.error input,.form-field.error textarea,.form-field.error select { border-color:#e0485a; }
.form-field.error .form-error { display:block; }
.form-success { display:none; text-align:center; padding:30px 0; color:var(--purple); font-size:18px; font-weight:700; }
.form-success .ok-icon { font-size:52px; display:block; margin-bottom:12px; }

/* reveal */
.reveal { opacity:0; transform:translateY(34px); transition:opacity .8s ease, transform .8s ease; }
.reveal.visible { opacity:1; transform:none; }

/* ---------- 响应式 ---------- */
@media (max-width:992px){
  .hero-dna-wrap { display:none; }
  .hero-text { max-width:100%; }
  .hero { padding:160px 0 90px; }
  .life-grid { grid-template-columns:repeat(2,1fr); }
  .lab-grid { grid-template-columns:repeat(2,1fr); }
  .news-row,.news-grid,.prod-grid { grid-template-columns:repeat(2,1fr); }
  .pipe-track { grid-template-columns:repeat(2,1fr); }
  .pipe-projects { grid-template-columns:repeat(2,1fr); }
  .svc-grid { grid-template-columns:repeat(2,1fr); }
  .value-row { grid-template-columns:1fr; }
  .contact-wrap,.about-grid { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr 1fr; }
  .team-card { grid-template-columns:1fr; }
  .team-card img { height:220px; }
}
@media (max-width:768px){
  .main-nav { position:fixed; top:78px; left:0; right:0; background:#fff; flex-direction:column; padding:18px 24px 26px; gap:10px; box-shadow:0 16px 30px rgba(0,0,0,.12); transform:translateY(-140%); transition:.4s; }
  .main-nav.open { transform:none; }
  .nav-toggle { display:flex; }
  .hero { padding:140px 0 80px; }
  .hero h1 { font-size:34px; }
  .life-grid,.lab-grid,.news-row,.news-grid,.prod-grid,.svc-grid,.pipe-projects { grid-template-columns:1fr; }
  .pipe-track { grid-template-columns:1fr; }
  .pipe-bar { display:none; }
  .form-grid { grid-template-columns:1fr; }
  .form-field.full { grid-column:span 1; }
  .footer-grid { grid-template-columns:1fr; }
  .cta-dna { padding:48px 24px; }
  .section { padding:70px 0; }
  .section-head h2 { font-size:30px; }
  .hero-meta { gap:22px; }
}