:root{--c-primary:#8e5bc0;--font:'Microsoft YaHei','PingFang SC',sans-serif;}
/* ============ 新细胞生物治疗 细胞圆泡风 ============ */
:root {
  --purple:#8e5bc0;
  --pink:#e07bb8;
  --white:#fbf8ff;
  --ink:#3d2a5a;
  --muted:#8a7aa5;
  --line:rgba(142,91,192,.16);
  --shadow:0 18px 44px rgba(142,91,192,.2);
  --grad:linear-gradient(135deg,var(--purple),var(--pink));
}
* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { font-family:"Microsoft YaHei","PingFang SC",sans-serif; color:var(--ink); background:var(--white); overflow-x:hidden; }
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; }

/* 细胞圆泡 */
.cell { position:absolute; border-radius:50%; background:radial-gradient(circle at 30% 28%, rgba(255,255,255,.95), rgba(224,123,184,.4) 45%, rgba(142,91,192,.32) 100%); border:1px solid rgba(142,91,192,.32); }
.cell::after { content:""; position:absolute; top:30%; left:30%; width:26%; height:26%; border-radius:50%; background:radial-gradient(circle at 35% 30%, #fff, rgba(142,91,192,.8)); box-shadow:0 0 12px rgba(142,91,192,.55); }
.cell.small { width:34px; height:34px; }
.cell.mid { width:56px; height:56px; }
.cell.large { width:96px; height:96px; }

/* ---------- 导航 ---------- */
.site-header { position:fixed; top:0; left:0; right:0; z-index:999; background:rgba(251,248,255,.94); backdrop-filter:blur(10px); box-shadow:0 2px 16px rgba(142,91,192,.14); }
.nav-wrap { display:flex; align-items:center; justify-content:space-between; height:72px; }
.logo { display:flex; align-items:center; gap:12px; }
.logo-mark { width:42px; height:42px; border-radius:50%; background:var(--grad); display:flex; align-items:center; justify-content:center; box-shadow:0 8px 20px rgba(142,91,192,.4); }
.logo-mark i { width:18px; height:18px; border-radius:50%; background:radial-gradient(circle at 32% 28%, #fff, var(--purple)); box-shadow:0 0 8px rgba(255,255,255,.6); }
.logo-text { display:flex; flex-direction:column; line-height:1.15; }
.logo-text b { font-size:20px; font-weight:800; color:var(--ink); letter-spacing:1px; }
.logo-text span { font-size:10px; letter-spacing:3px; color:var(--purple); font-weight:700; margin-top:2px; }
.main-nav { display:flex; gap:4px; }
.main-nav a { padding:10px 15px; font-size:15px; font-weight:600; color:var(--ink); border-radius:30px; transition:.3s; }
.main-nav a:hover { color:var(--purple); background:#f3eafd; }
.main-nav a.active { background:var(--grad); color:#fff; box-shadow:0 8px 20px rgba(142,91,192,.38); }
.nav-toggle { display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:8px; }
.nav-toggle span { width:24px; height:2px; background:var(--ink); border-radius:2px; transition:.3s; }

/* ---------- Hero：细胞分裂动画 ---------- */
.hero { padding:150px 0 90px; position:relative; overflow:hidden; background:
  radial-gradient(500px 320px at 12% 16%, rgba(224,123,184,.2), transparent 60%),
  radial-gradient(600px 380px at 90% 80%, rgba(142,91,192,.22), transparent 60%),
  linear-gradient(180deg,#f4edfd 0%,var(--white) 100%); }
.hero .cell.small:nth-child(1){ top:40px; left:6%; animation:float 7s ease-in-out infinite; }
.hero .cell.mid:nth-child(2){ top:120px; right:8%; animation:float 9s ease-in-out 1s infinite; }
.hero .cell.small:nth-child(3){ bottom:80px; left:14%; animation:float 8s ease-in-out 2s infinite; }
.hero .cell.mid:nth-child(4){ bottom:40px; right:16%; animation:float 10s ease-in-out 1.5s infinite; }
.hero .cell.small:nth-child(5){ top:220px; left:40%; animation:float 8.5s ease-in-out .8s infinite; }
@keyframes float { 0%,100%{transform:translateY(0);} 50%{transform:translateY(-16px);} }
.hero-inner { display:grid; grid-template-columns:1fr 1fr; gap:40px; align-items:center; }
.hero-tag { display:inline-block; padding:8px 20px; background:#fff; border:1px solid var(--line); border-radius:30px; font-size:13px; font-weight:700; letter-spacing:2px; color:var(--purple); margin-bottom:24px; }
.hero h1 { font-size:48px; line-height:1.28; font-weight:800; color:var(--ink); margin-bottom:22px; letter-spacing:1px; }
.hero h1 em { font-style:normal; background:var(--grad); -webkit-background-clip:text; -webkit-text-fill-color:transparent; }
.hero-text p { font-size:16px; line-height:2; color:var(--muted); max-width:460px; margin-bottom:34px; }
.hero-actions { display:flex; gap:16px; }
.btn { display:inline-block; padding:14px 32px; font-weight:700; font-size:15px; border-radius:40px; transition:.3s; border:1px solid transparent; cursor:pointer; letter-spacing:1px; }
.btn-primary { background:var(--grad); color:#fff; box-shadow:0 12px 26px rgba(142,91,192,.42); }
.btn-primary:hover { transform:translateY(-3px); box-shadow:0 18px 34px rgba(142,91,192,.5); }
.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 22px rgba(0,0,0,.12); }
.btn-block { display:block; width:100%; text-align:center; }

/* 细胞分裂 */
.cell-divide { position:relative; width:380px; height:360px; margin:0 auto; }
.cell-divide .cell-a { top:50%; left:50%; width:140px; height:140px; margin:-70px 0 0 -70px; animation:divideA 7s ease-in-out infinite; }
.cell-divide .cell-b { top:50%; left:50%; width:120px; height:120px; margin:-60px 0 0 -60px; opacity:0; animation:divideB 7s ease-in-out infinite; }
@keyframes divideA {
  0%,14% { transform:translate(0,0) scale(1); opacity:1; }
  42%,100% { transform:translate(-110px,8px) scale(.82); opacity:1; }
}
@keyframes divideB {
  0%,20% { transform:translate(0,0) scale(.4); opacity:0; }
  45%,100% { transform:translate(96px,-6px) scale(1); opacity:1; }
}
.cell-divide .dot { position:absolute; width:8px; height:8px; border-radius:50%; background:var(--pink); animation:emit 7s ease-in-out infinite; }
.cell-divide .dot.d1 { top:44%; left:50%; }
.cell-divide .dot.d2 { top:54%; left:48%; animation-delay:.3s; background:var(--purple); }
.cell-divide .dot.d3 { top:58%; left:52%; animation-delay:.6s; }
@keyframes emit { 0%,30%{transform:translate(0,0) scale(0); opacity:0;} 46%{transform:translate(0,0) scale(1); opacity:1;} 100%{transform:translate(60px,-40px) scale(.4); opacity:0;} }
.cell-divide::before { content:""; position:absolute; top:50%; left:50%; width:240px; height:240px; margin:-120px 0 0 -120px; border-radius:50%; border:1px dashed rgba(142,91,192,.28); animation:spin 24s linear infinite; }
@keyframes spin { from{transform:rotate(0deg);} to{transform:rotate(360deg);} }
.cell-divide::after { content:""; position:absolute; top:50%; left:50%; width:180px; height:180px; margin:-90px 0 0 -90px; border-radius:50%; border:1px solid rgba(224,123,184,.22); }
.cell-note { position:absolute; bottom:6px; left:50%; transform:translateX(-50%); font-size:12px; letter-spacing:4px; color:var(--purple); font-weight:700; white-space:nowrap; }
.cell-note::before,.cell-note::after { content:"•"; margin:0 10px; color:var(--pink); }

/* ---------- 数据带 ---------- */
.stats-band { padding:0 0 80px; }
.stats-grid { background:#fff; border-radius:22px; border:1px solid var(--line); display:grid; grid-template-columns:repeat(4,1fr); box-shadow:var(--shadow); overflow:hidden; }
.stat { text-align:center; padding:34px 16px; border-right:1px solid var(--line); position:relative; }
.stat:last-child { border-right:none; }
.stat b { display:block; font-size:36px; font-weight:800; background:var(--grad); -webkit-background-clip:text; -webkit-text-fill-color:transparent; }
.stat b i { font-style:normal; }
.stat p { font-size:14px; color:var(--muted); margin-top:6px; }

/* ---------- Section 通用（细胞链分隔） ---------- */
.section { padding:96px 0; position:relative; }
.cell-chain { height:26px; display:flex; align-items:center; justify-content:center; position:relative; }
.cell-chain::before { content:""; position:absolute; top:50%; left:50%; transform:translate(-50%,-50%); width:60%; height:2px; background:linear-gradient(90deg,transparent,rgba(142,91,192,.25),transparent); }
.cell-chain .cc { border-radius:50%; position:relative; z-index:2; background:radial-gradient(circle at 32% 28%, #fff, rgba(224,123,184,.5) 45%, rgba(142,91,192,.45) 100%); border:1px solid rgba(142,91,192,.35); margin:0 22px; }
.cell-chain .cc::after { content:""; position:absolute; top:28%; left:28%; width:30%; height:30%; border-radius:50%; background:rgba(142,91,192,.7); }
.cell-chain .cc:nth-child(1){ width:14px; height:14px; }
.cell-chain .cc:nth-child(2){ width:20px; height:20px; }
.cell-chain .cc:nth-child(3){ width:12px; height:12px; }
.cell-chain .cc:nth-child(4){ width:18px; height:18px; }
.cell-chain .cc:nth-child(5){ width:13px; height:13px; }
.section-head { text-align:center; max-width:640px; margin:0 auto 54px; }
.section-head .kicker { display:inline-block; font-size:13px; font-weight:700; letter-spacing:4px; color:var(--purple); margin-bottom:16px; }
.section-head h2 { font-size:34px; font-weight:800; color:var(--ink); margin-bottom:14px; }
.section-head h2 span { background:var(--grad); -webkit-background-clip:text; -webkit-text-fill-color:transparent; }
.section-head p { font-size:15px; color:var(--muted); line-height:1.9; }

/* ---------- 细胞科技 ---------- */
.tech { background:linear-gradient(180deg,var(--white),#f3ecfd); }
.tech-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:26px; }
.tech-card { background:#fff; border-radius:22px; padding:40px 30px; text-align:center; position:relative; overflow:hidden; border:1px solid var(--line); transition:.35s; }
.tech-card:hover { transform:translateY(-6px); box-shadow:var(--shadow); }
.tech-card .cell { position:absolute; width:70px; height:70px; right:-18px; top:-18px; opacity:.5; }
.tech-ico { width:80px; height:80px; margin:0 auto 20px; border-radius:50%; background:radial-gradient(circle at 32% 28%, #fff, rgba(224,123,184,.45) 50%, rgba(142,91,192,.35) 100%); border:1px solid rgba(142,91,192,.3); display:flex; align-items:center; justify-content:center; font-size:34px; box-shadow:0 10px 24px rgba(142,91,192,.25); }
.tech-card h3 { font-size:19px; color:var(--ink); margin-bottom:10px; }
.tech-card p { font-size:14px; color:var(--muted); line-height:1.9; }

/* ---------- 治疗项目（渐变圆泡边框） ---------- */
.treat { background:#fff; }
.treat-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:26px; }
.treat-card { background:#fff; border-radius:24px; padding:34px 28px; position:relative; transition:.35s; }
.treat-card::before { content:""; position:absolute; inset:0; border-radius:24px; padding:2px; background:var(--grad); -webkit-mask:linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0); -webkit-mask-composite:xor; mask-composite:exclude; pointer-events:none; }
.treat-card:hover { transform:translateY(-6px); box-shadow:var(--shadow); }
.treat-head { display:flex; align-items:center; gap:14px; margin-bottom:18px; }
.treat-ico { width:54px; height:54px; border-radius:50%; background:radial-gradient(circle at 32% 28%, #fff, rgba(224,123,184,.4) 50%, rgba(142,91,192,.3) 100%); border:1px solid rgba(142,91,192,.28); display:flex; align-items:center; justify-content:center; font-size:25px; }
.treat-card h3 { font-size:18px; color:var(--ink); }
.treat-card ul { margin-bottom:18px; }
.treat-card li { font-size:14px; color:var(--muted); padding:8px 0 8px 22px; position:relative; border-bottom:1px dashed var(--line); }
.treat-card li:last-child { border-bottom:none; }
.treat-card li::before { content:"•"; position:absolute; left:2px; color:var(--pink); font-weight:700; }
.treat-foot { display:flex; justify-content:space-between; align-items:center; }
.treat-foot b { font-size:22px; background:var(--grad); -webkit-background-clip:text; -webkit-text-fill-color:transparent; font-family:Consolas,monospace; }
.treat-foot a { font-size:13px; font-weight:700; color:var(--purple); }

/* ---------- 临床研究 ---------- */
.research { background:linear-gradient(180deg,#f3ecfd,var(--white)); }
.research-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:26px; }
.rs-card { background:#fff; border-radius:22px; padding:34px 28px; border:1px solid var(--line); transition:.35s; }
.rs-card:hover { transform:translateY(-6px); box-shadow:var(--shadow); }
.rs-top { display:flex; justify-content:space-between; align-items:center; margin-bottom:20px; }
.rs-ico { width:56px; height:56px; border-radius:16px; background:#f6effe; border:1px solid var(--line); display:flex; align-items:center; justify-content:center; font-size:26px; }
.rs-num { font-size:30px; font-weight:800; background:var(--grad); -webkit-background-clip:text; -webkit-text-fill-color:transparent; font-family:Consolas,monospace; }
.rs-card h3 { font-size:18px; color:var(--ink); margin-bottom:10px; }
.rs-card p { font-size:14px; color:var(--muted); line-height:1.9; }
.rs-bar { height:8px; border-radius:6px; background:#efe8fa; overflow:hidden; margin-top:16px; }
.rs-bar i { display:block; height:100%; width:0; border-radius:6px; background:var(--grad); transition:width 1.4s ease; }

/* ---------- 页脚 ---------- */
.site-footer { background:linear-gradient(160deg,#3a1f66,#8e5bc0); color:#e6d9f8; padding:64px 0 0; }
.footer-grid { display:grid; grid-template-columns:1.4fr 1fr 1.2fr; gap:40px; padding-bottom:38px; }
.footer-brand h3 { font-size:20px; color:#fff; margin-bottom:14px; letter-spacing:1px; }
.footer-brand p { font-size:14px; line-height:2; opacity:.85; }
.footer-links h4 { font-size:15px; color:#fff; margin-bottom:16px; letter-spacing:2px; }
.footer-links a { display:block; font-size:14px; padding:6px 0; opacity:.85; transition:.3s; }
.footer-links a:hover { color:#f3b8e0; padding-left:6px; }
.footer-links p { font-size:14px; padding:4px 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:13px; opacity:.75; }

/* ---------- 子页 Hero ---------- */
.page-hero { padding:150px 0 66px; background:
  radial-gradient(460px 300px at 14% 20%, rgba(224,123,184,.22), transparent 60%),
  radial-gradient(520px 320px at 88% 75%, rgba(142,91,192,.24), transparent 60%),
  linear-gradient(180deg,#f4edfd,var(--white)); text-align:center; position:relative; overflow:hidden; }
.page-hero .cell.small:nth-child(1){ top:40px; left:10%; animation:float 7s ease-in-out infinite; }
.page-hero .cell.mid:nth-child(2){ bottom:30px; right:12%; animation:float 9s ease-in-out 1s infinite; }
.page-hero .cell.small:nth-child(3){ top:80px; right:22%; animation:float 8s ease-in-out 2s infinite; }
.page-hero .kicker { display:inline-block; font-size:13px; font-weight:700; letter-spacing:4px; color:var(--purple); margin-bottom:14px; }
.page-hero h1 { font-size:40px; font-weight:800; color:var(--ink); margin-bottom:14px; letter-spacing:1px; }
.page-hero h1 span { background:var(--grad); -webkit-background-clip:text; -webkit-text-fill-color:transparent; }
.page-hero p { font-size:15px; color:var(--muted); }

/* about */
.about-grid { display:grid; grid-template-columns:1fr 1.1fr; gap:56px; align-items:center; }
.about-imgs { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.about-imgs img { height:230px; object-fit:cover; width:100%; border-radius:18px; box-shadow:var(--shadow); }
.about-imgs img:nth-child(3){ grid-column:span 2; height:270px; }
.about-text h2 { font-size:30px; color:var(--ink); margin-bottom:20px; }
.about-text h2 span { background:var(--grad); -webkit-background-clip:text; -webkit-text-fill-color:transparent; }
.about-text p { font-size:15px; line-height:2.1; color:var(--muted); margin-bottom:14px; }
.data-table { width:100%; border-collapse:collapse; margin-top:14px; }
.data-table th { background:var(--grad); color:#fff; padding:13px; font-size:14px; }
.data-table td { padding:13px; border:1px solid var(--line); font-size:14px; text-align:center; color:var(--muted); background:#fff; }
.data-table tr:nth-child(even) td { background:#f6effe; }

/* products */
.prod-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:40px; }
.prod-card { background:#fff; border-radius:22px; overflow:hidden; border:1px solid var(--line); transition:.35s; }
.prod-card:hover { transform:translateY(-6px); box-shadow:var(--shadow); }
.prod-card img { height:200px; width:100%; object-fit:cover; }
.prod-body { padding:26px; }
.prod-body h3 { font-size:19px; color:var(--ink); margin-bottom:8px; }
.prod-body p { font-size:14px; color:var(--muted); line-height:1.9; margin-bottom:16px; }
.prod-price { display:flex; justify-content:space-between; align-items:center; }
.prod-price b { font-size:22px; background:var(--grad); -webkit-background-clip:text; -webkit-text-fill-color:transparent; font-family:Consolas,monospace; }
.prod-price a { color:var(--purple); font-size:13px; font-weight:700; }
.flow { background:#fff; }
.flow-track { display:grid; grid-template-columns:repeat(4,1fr); gap:20px; }
.flow-step { background:#f6effe; border-radius:20px; padding:30px 20px; text-align:center; transition:.3s; position:relative; }
.flow-step:hover { background:var(--grad); }
.flow-step:hover h4,.flow-step:hover p { color:#fff; }
.flow-num { display:inline-flex; width:52px; height:52px; border-radius:50%; background:#fff; border:1px solid var(--line); color:var(--purple); font-weight:800; font-size:16px; align-items:center; justify-content:center; margin-bottom:14px; font-family:Consolas,monospace; }
.flow-step:hover .flow-num { color:var(--purple); }
.flow-step h4 { font-size:16px; color:var(--ink); margin-bottom:6px; }
.flow-step p { font-size:12px; color:var(--muted); line-height:1.7; }

/* news */
.news-feature { display:grid; grid-template-columns:1.2fr 1fr; gap:0; background:#fff; border-radius:22px; overflow:hidden; box-shadow:var(--shadow); margin-bottom:44px; }
.news-feature img { width:100%; height:340px; object-fit:cover; }
.news-feature-body { padding:40px; }
.date-badge { display:inline-block; background:var(--grad); color:#fff; font-size:12px; padding:6px 16px; border-radius:30px; margin-bottom:18px; }
.news-feature-body h3 { font-size:24px; color:var(--ink); margin-bottom:14px; line-height:1.5; }
.news-feature-body p { font-size:15px; color:var(--muted); line-height:2; margin-bottom:22px; }
.news-list { display:grid; grid-template-columns:repeat(2,1fr); gap:26px; }
.news-item { display:flex; gap:18px; background:#fff; border-radius:18px; padding:16px; border:1px solid var(--line); transition:.3s; }
.news-item:hover { box-shadow:var(--shadow); }
.news-item img { width:150px; height:118px; object-fit:cover; border-radius:12px; }
.news-item h4 { font-size:16px; color:var(--ink); margin-bottom:8px; line-height:1.5; }
.news-item p { font-size:13px; color:var(--muted); line-height:1.8; }
.news-item time { font-size:12px; color:var(--purple); font-family:Consolas,monospace; }

/* contact */
.contact-wrap { display:grid; grid-template-columns:1fr 1.15fr; gap:50px; align-items:start; }
.contact-info-item { display:flex; gap:16px; padding:18px 0; border-bottom:1px dashed var(--line); }
.ci-icon { width:48px; height:48px; border-radius:50%; background:radial-gradient(circle at 32% 28%, #fff, rgba(224,123,184,.4) 55%, rgba(142,91,192,.3) 100%); border:1px solid rgba(142,91,192,.3); display:flex; align-items:center; justify-content:center; font-size:20px; flex:0 0 48px; }
.contact-info-item h4 { font-size:16px; color:var(--ink); margin-bottom:4px; }
.contact-info-item p { font-size:14px; color:var(--muted); line-height:1.7; }
.map-box { border-radius:18px; overflow:hidden; box-shadow:var(--shadow); margin-top:26px; }
.map-box img { width:100%; height:240px; object-fit:cover; }
.form-box { background:#fff; border-radius:22px; padding:38px; box-shadow:var(--shadow); border:1px solid var(--line); }
.form-box h3 { font-size:22px; color:var(--ink); margin-bottom:24px; }
.form-grid { display:grid; grid-template-columns:1fr 1fr; gap:18px; }
.form-field { margin-bottom:18px; }
.form-field label { display:block; font-size:14px; font-weight:700; color:var(--ink); margin-bottom:8px; }
.form-field input,.form-field select,.form-field textarea { width:100%; padding:13px 15px; border:1px solid var(--line); border-radius:14px; font-size:14px; font-family:inherit; background:#fbf8ff; 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(142,91,192,.14); background:#fff; }
.form-field.full { grid-column:span 2; }
.form-error { color:#e0485a; font-size:12px; 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:16px; font-weight:700; }
.form-success .ok-icon { font-size:52px; display:block; margin-bottom:12px; }

/* CTA */
.cta-box { background:linear-gradient(120deg,var(--purple),var(--pink)); border-radius:24px; padding:60px; text-align:center; color:#fff; position:relative; overflow:hidden; }
.cta-box::before { content:""; position:absolute; width:90px; height:90px; top:-30px; left:-20px; border-radius:50%; background:radial-gradient(circle at 32% 28%, rgba(255,255,255,.85), rgba(255,255,255,.25)); opacity:.5; }
.cta-box::after { content:""; position:absolute; width:60px; height:60px; bottom:-20px; right:40px; border-radius:50%; background:radial-gradient(circle at 32% 28%, rgba(255,255,255,.85), rgba(255,255,255,.2)); opacity:.45; }
.cta-box h2 { font-size:32px; font-weight:800; margin-bottom:14px; position:relative; }
.cta-box p { font-size:15px; opacity:.94; margin-bottom:30px; position:relative; }
.cta-actions { display:flex; gap:16px; justify-content:center; position:relative; }

/* 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-inner { grid-template-columns:1fr; }
  .cell-divide { display:none; }
  .stats-grid { grid-template-columns:repeat(2,1fr); }
  .stat:nth-child(2){ border-right:none; }
  .tech-grid,.treat-grid,.research-grid,.prod-grid { grid-template-columns:repeat(2,1fr); }
  .flow-track { grid-template-columns:repeat(2,1fr); }
  .about-grid,.contact-wrap { grid-template-columns:1fr; }
  .news-list { grid-template-columns:1fr; }
  .news-feature { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr 1fr; }
}
@media (max-width:768px){
  .main-nav { position:fixed; top:72px; 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:120px 0 60px; }
  .hero h1 { font-size:30px; }
  .tech-grid,.treat-grid,.research-grid,.prod-grid { grid-template-columns:1fr; }
  .stats-grid { grid-template-columns:1fr; }
  .stat { border-right:none; border-bottom:1px solid var(--line); }
  .flow-track { grid-template-columns:1fr; }
  .form-grid { grid-template-columns:1fr; }
  .form-field.full { grid-column:span 1; }
  .footer-grid { grid-template-columns:1fr; }
  .cta-box { padding:44px 24px; }
  .section { padding:70px 0; }
  .section-head h2 { font-size:26px; }
  .news-item { flex-direction:column; }
  .news-item img { width:100%; height:180px; }
}


/* ===== CMS 表单提交反馈 ===== */
.form-success.show { display:block; }
.form-alert { padding:14px 18px; border-radius:10px; margin-bottom:20px; font-size:14px; line-height:1.8; }
.form-alert-err { background:rgba(192,57,43,.08); border:1px solid #c0392b; color:#c0392b; }
.form-success.show { padding:14px 18px; border-radius:10px; margin-bottom:20px; background:rgba(39,174,96,.1); border:1px solid #27ae60; color:#27ae60; }