/* TechEXO® · 共用样式 · shared base styles */
:root{
  --brand-blue:#7FB5DA;
  --brand-mint:#6DC3B0;
  --brand-teal:#4AA8A3;
  --brand-sage:#A8D5C0;
  --ink:#1E3647;
  --ink-2:#2A4858;
  --body:#4B6476;
  --muted:#6B8598;
  --line:#E3EAF2;
  --bg:#FAFCFD;
  --bg-soft:#EDF6F4;
  --grad-hero:linear-gradient(180deg,#E8F3F5 0%,#D4E9E4 50%,#C3DDD5 100%);
  --grad-brand:linear-gradient(135deg,var(--brand-blue) 0%,var(--brand-mint) 100%);
  --grad-brand-v:linear-gradient(180deg,var(--brand-blue) 0%,var(--brand-mint) 100%);
  --shadow-card:0 10px 24px rgba(127,181,218,.12);
  --shadow-card-hover:0 18px 36px rgba(109,195,176,.22);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:'Inter','HarmonyOS Sans','PingFang SC','Microsoft YaHei',sans-serif;
  color:var(--ink);
  background:var(--bg);
  font-size:16px;
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
.container{max-width:1440px;margin:0 auto;padding:0 80px}
.gradient-text{background:var(--grad-brand-v);-webkit-background-clip:text;background-clip:text;color:transparent}
.material-symbols-outlined{font-variation-settings:'FILL' 0,'wght' 300,'GRAD' 0,'opsz' 24}

/* ===== NAV ===== */
.nav{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;padding:0 80px;
  position:relative;z-index:10;
  background:#fff;
  border-bottom:1px solid var(--line);
}
.nav.nav-on-hero{background:transparent;border-bottom:none}
.logo{display:flex;align-items:center;gap:10px}
.logo-mark{width:34px;height:34px;border-radius:999px;background:var(--grad-brand);display:flex;align-items:center;justify-content:center}
.logo-mark::after{content:'';width:12px;height:12px;border-radius:50%;background:#fff}
.logo-text{font-size:22px;font-weight:700;letter-spacing:-.5px;color:var(--ink)}
.logo-badge{font-size:12px;color:var(--brand-teal);margin-left:-4px}
.logo-img{height:34px;width:auto;display:block;object-fit:contain}
.nav-links{display:flex;gap:36px;align-items:center}
.nav-links > a,.nav-links > .has-sub > a{font-size:14px;font-weight:500;color:var(--body)}
.nav-links a.active{color:var(--ink);font-weight:600}
.nav-cta{padding:10px 20px;border-radius:999px;background:var(--grad-brand);color:#fff;font-weight:600;font-size:13px;box-shadow:0 6px 16px rgba(109,195,176,.4)}

/* ===== NAV DROPDOWN (二级菜单) ===== */
.nav-links .has-sub{position:relative;display:inline-flex;align-items:center;height:72px}
.nav-links .has-sub > a{display:inline-flex;align-items:center;height:100%}
.nav-links .subnav{
  position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);
  min-width:220px;padding:10px 0;
  background:#fff;border:1px solid var(--line);border-radius:12px;
  box-shadow:0 14px 32px rgba(30,54,71,.12);
  display:flex;flex-direction:column;
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .18s ease, transform .18s ease, visibility .18s ease;
  z-index:50;
}
.nav-links .has-sub:hover .subnav,
.nav-links .has-sub:focus-within .subnav{
  opacity:1;visibility:visible;pointer-events:auto;
  transform:translateX(-50%) translateY(0);
}
.nav-links .subnav a{
  display:block;padding:10px 18px;
  font-size:13px;font-weight:500;color:var(--body);white-space:nowrap;
}
.nav-links .subnav a:hover{background:var(--bg-soft);color:var(--brand-teal)}
/* 在 hero 透明导航下，二级菜单仍保持白底 */
.nav.nav-on-hero .subnav{background:#fff}

/* ===== SECTION BASICS ===== */
section{padding:120px 0}
.section-head{display:flex;gap:80px;align-items:flex-start}
.section-head.centered{flex-direction:column;align-items:center;text-align:center;gap:16px}
.section-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 12px 6px 10px;border-radius:999px;
  background:rgba(109,195,176,.14);
  color:var(--brand-teal);font-size:12px;font-weight:600;letter-spacing:1px;
}
.section-tag .d{width:6px;height:6px;border-radius:50%;background:var(--brand-teal)}
h3.section-title{font-size:48px;font-weight:700;letter-spacing:-1.5px;line-height:1.15;margin:20px 0 0;color:var(--ink)}
.section-title-sm{font-size:44px;font-weight:700;letter-spacing:-1.2px;line-height:1.2;margin:0;color:var(--ink)}
.section-desc{font-size:15px;line-height:1.7;color:var(--body);max-width:720px;margin:0}

/* ===== SUBPAGE HERO ===== */
.subhero{
  background:var(--grad-hero);
  padding:80px 0 64px;
  position:relative;overflow:hidden;
}
.subhero::before{
  content:'';position:absolute;top:-100px;right:-150px;width:600px;height:600px;border-radius:50%;
  background:radial-gradient(circle,rgba(109,195,176,.4) 0%,transparent 70%);
  pointer-events:none;
}
.subhero-inner{position:relative;z-index:2;max-width:900px}
.subhero .crumbs{font-size:12px;font-weight:600;letter-spacing:1.5px;color:var(--muted);margin-bottom:18px}
.subhero .crumbs a{color:var(--brand-teal)}
.subhero h1{font-size:56px;font-weight:700;letter-spacing:-1.8px;line-height:1.1;margin:0 0 18px;color:var(--ink)}
.subhero .lead{font-size:17px;line-height:1.7;color:var(--body);max-width:780px;margin:0}
.subhero-art{position:absolute;top:0;right:0;bottom:0;width:58%;max-width:820px;z-index:1;-webkit-mask-image:linear-gradient(90deg,transparent 0%,#000 38%,#000 100%);mask-image:linear-gradient(90deg,transparent 0%,#000 38%,#000 100%)}
.subhero-art img{width:100%;height:100%;object-fit:cover;object-position:center right;opacity:.9;display:block}
@media(max-width:960px){.subhero-art{display:none}}

/* 技术管线二级页：顶部统一纯色（品牌薄荷） —— 不再使用顶部图片 */
.subhero--flat{background:var(--brand-mint)}
.subhero--flat::before{display:none}
.subhero--flat .crumbs{color:rgba(255,255,255,.78)}
.subhero--flat .crumbs a{color:#fff}
.subhero--flat h1{color:#fff}
.subhero--flat .lead{color:rgba(255,255,255,.92)}
.subhero--flat .tech-hero-meta .pill{background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.45);color:#fff}

/* ===== CTA / FOOTER (shared) ===== */
.cta{
  background:linear-gradient(105deg,#E8F3F5 0%,#D4E9E4 50%,var(--brand-mint) 100%);
  padding:80px 0;position:relative;overflow:hidden;
}
.cta::before{
  content:'';position:absolute;top:-200px;left:-200px;width:800px;height:800px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.53) 0%,transparent 70%);pointer-events:none;z-index:1;
}
/* 真实生物照片背景层 —— 替换 images/cta-bg.jpg 即可，缺图自动回退到 DNA */
.cta-art{position:absolute;inset:0;z-index:0;overflow:hidden}
.cta-art img{width:100%;height:100%;object-fit:cover;display:block;opacity:.45}
.cta-art::after{content:'';position:absolute;inset:0;background:linear-gradient(105deg,rgba(232,243,245,.86) 0%,rgba(212,233,228,.74) 45%,rgba(109,195,176,.62) 100%)}
.cta-inner{display:flex;gap:60px;align-items:center;position:relative;z-index:2}
.cta-left{flex:1;display:flex;flex-direction:column;gap:20px}
.cta-eye{font-size:12px;font-weight:600;letter-spacing:2px;color:var(--brand-teal)}
.cta-left h3{font-size:44px;font-weight:700;letter-spacing:-1.2px;line-height:1.15;margin:0;color:var(--ink)}
.cta-left p{font-size:15px;line-height:1.7;color:var(--body);max-width:520px;margin:0}
.cta-form{
  width:480px;background:rgba(255,255,255,.68);backdrop-filter:blur(20px);
  border:1px solid rgba(109,195,176,.35);border-radius:16px;padding:32px;
  display:flex;flex-direction:column;gap:16px;
  box-shadow:0 20px 40px rgba(109,195,176,.22);
}
.cta-form h4{font-size:17px;font-weight:700;margin:0;color:var(--ink)}
.cta-form p{font-size:13px;color:var(--body);margin:0}
.cta-form input,.cta-form textarea{
  width:100%;padding:12px 16px;border-radius:10px;
  background:rgba(255,255,255,.78);border:1px solid rgba(109,195,176,.35);
  font-size:13px;color:var(--ink);font-family:inherit;resize:none;
}
.cta-form input::placeholder,.cta-form textarea::placeholder{color:#8598AD}
.cta-submit{
  padding:14px 20px;border-radius:10px;background:var(--grad-brand);
  color:#fff;font-size:14px;font-weight:700;border:none;cursor:pointer;
  box-shadow:0 8px 24px rgba(109,195,176,.45);
}
.cta-qrs{
  width:480px;background:rgba(255,255,255,.68);backdrop-filter:blur(20px);
  border:1px solid rgba(109,195,176,.35);border-radius:16px;padding:32px;
  display:flex;gap:32px;justify-content:center;align-items:flex-start;
  box-shadow:0 20px 40px rgba(109,195,176,.22);
}
.cta-qr{margin:0;display:flex;flex-direction:column;align-items:center;gap:12px}
.cta-qr img{width:180px;height:180px;display:block;border-radius:8px;background:#fff;padding:6px;box-shadow:0 4px 12px rgba(20,40,60,.08)}
.cta-qr figcaption{font-size:14px;font-weight:600;color:var(--ink);letter-spacing:.5px}

.footer{background:linear-gradient(180deg,var(--ink) 0%,var(--ink-2) 100%);color:#A0B2C4;padding:64px 0 40px}
.footer-top{display:flex;gap:80px}
.footer-brand{width:360px;display:flex;flex-direction:column;gap:16px}
.footer-brand .logo{margin-bottom:0}
.footer-brand .logo-text{color:#fff}
.footer-brand .tag{font-size:13px;color:#7EA0BE}
.footer-brand .phone{font-size:20px;font-weight:700;color:var(--brand-mint)}
.footer-brand .addr,.footer-brand .email{font-size:12px;color:#7EA0BE}
.footer-cols{display:flex;gap:40px;flex:1}
.footer-col{display:flex;flex-direction:column;gap:14px}
.footer-col h5{font-size:12px;font-weight:700;letter-spacing:1.5px;color:#fff;margin:0}
.footer-col a{font-size:13px;color:#A0B2C4}
.footer-col a:hover{color:#fff}
.footer-divider{height:1px;background:rgba(255,255,255,.1);margin:48px 0 20px}
.footer-bottom{display:flex;justify-content:space-between;align-items:center}
.footer-bottom .copy{font-size:11px;color:#6B7A8B}
.footer-bottom .copy a{color:#7EA0BE}
.footer-bottom .copy a:hover{color:#fff;text-decoration:underline}
.footer-bottom .links{display:flex;gap:20px}
.footer-bottom .links a{font-size:11px;color:#7EA0BE}

/* ===== SUBPAGE CONTENT ===== */
.subpage{padding:80px 0 100px;background:#fff}
.subpage .lede{font-size:16px;line-height:1.8;color:var(--body);max-width:860px;margin:0 0 48px}
.subpage h2{font-size:32px;font-weight:700;letter-spacing:-1px;line-height:1.25;margin:48px 0 18px;color:var(--ink)}
.subpage h3{font-size:22px;font-weight:700;margin:32px 0 12px;color:var(--ink)}
.subpage p{font-size:15px;line-height:1.85;color:var(--body);margin:0 0 16px}
.subpage ul{padding-left:20px;color:var(--body);font-size:15px;line-height:1.85}
.subpage li{margin-bottom:8px}
.subpage .meta{display:flex;gap:32px;flex-wrap:wrap;background:var(--bg-soft);border:1px solid rgba(109,195,176,.2);border-radius:14px;padding:24px 28px;margin:32px 0}
.subpage .meta .item{display:flex;flex-direction:column;gap:4px}
.subpage .meta .k{font-size:11px;font-weight:600;letter-spacing:1px;color:var(--muted)}
.subpage .meta .v{font-size:18px;font-weight:700;color:var(--ink)}

.back-link{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--brand-teal);font-weight:600;margin-top:32px}

/* ===== TECH PAGE LAB FIGURES ===== */
.lab-figures{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin:40px 0}
.lab-figures figure{margin:0;border-radius:14px;overflow:hidden;background:var(--bg-soft);border:1px solid rgba(109,195,176,.18);box-shadow:0 8px 18px rgba(127,181,218,.10)}
.lab-figures img{width:100%;height:280px;object-fit:cover;display:block;background:#EDF6F4}
.lab-figures figcaption{padding:14px 18px;font-size:13px;color:var(--body);line-height:1.55}
@media(max-width:700px){.lab-figures{grid-template-columns:1fr;gap:14px;margin:28px 0}.lab-figures img{height:220px}}

/* ===== TECH PAGE 2-COLUMN (text + lab photo) ===== */
.tech-2col{display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:start;margin-bottom:40px}
.tech-2col__text p{font-size:15px;line-height:1.85;color:var(--body);margin:0}
.tech-2col__photo{border-radius:18px;overflow:hidden;box-shadow:0 14px 32px rgba(127,181,218,.16);border:1px solid rgba(109,195,176,.18);background:var(--bg-soft)}
.tech-2col__photo img{width:100%;height:380px;object-fit:cover;display:block}
@media(max-width:900px){
  .tech-2col{grid-template-columns:1fr;gap:24px}
  .tech-2col__photo img{height:280px}
}

/* ===== HONORS PAGE ===== */
.honor-section{margin-bottom:72px}
.honor-section-head{text-align:center;margin:48px 0 32px}
.honor-section-head .honor-section-en{
  font-size:14px;font-weight:500;letter-spacing:2px;
  color:var(--muted);text-transform:uppercase;margin:0 0 6px;
}
.honor-section-head h2{
  font-size:32px;font-weight:700;letter-spacing:-.5px;
  color:var(--ink);margin:0 0 14px;
}
.honor-section-head .honor-section-desc{
  font-size:15px;line-height:1.7;color:var(--body);
  max-width:760px;margin:0 auto;
}
.honors-page-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:32px}
.honor-page-card{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px;
  display:flex;flex-direction:column;gap:12px;
  box-shadow:0 8px 20px rgba(109,195,176,.10);
  transition:transform .25s ease, box-shadow .25s ease;
}
.honor-page-card:hover{transform:translateY(-4px);box-shadow:0 16px 32px rgba(109,195,176,.20)}
.honor-page-card .honor-img{
  width:100%;height:220px;border-radius:12px;overflow:hidden;
  background:#fff;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  padding:12px;
}
.honor-page-card .honor-img img{
  max-width:100%;max-height:100%;width:auto;height:auto;
  object-fit:contain;display:block;
}
.honor-page-card .honor-img--empty{
  display:flex;align-items:center;justify-content:center;width:100%;height:100%;
  color:var(--brand-teal);
}
.honor-page-card .honor-img--empty .material-symbols-outlined{font-size:64px;opacity:.55}
.honor-page-card .year{
  display:inline-block;font-size:11px;font-weight:600;letter-spacing:.8px;
  color:var(--brand-teal);text-transform:uppercase;
}
.honor-page-card h4{font-size:15px;font-weight:700;margin:0;color:var(--ink);line-height:1.45;padding:0 4px}
.honor-page-card p{font-size:13px;line-height:1.6;color:var(--body);margin:0;padding:0 4px 4px}

/* 专利墙 hero —— 整张装饰拼图 */
.patent-hero{
  margin-top:32px;border-radius:18px;overflow:hidden;
  background:linear-gradient(180deg,#fff 0%,var(--bg-soft) 100%);
  border:1px solid var(--line);
  box-shadow:0 14px 32px rgba(127,181,218,.14);
  padding:24px;
}
.patent-hero img{width:100%;height:auto;display:block;border-radius:8px}

/* 专利墙 —— 多张专利证书拼贴 */
.patent-wall{
  display:grid;grid-template-columns:repeat(6,1fr);gap:16px;margin-top:32px;
}
.patent-cert{
  aspect-ratio:3/4;border-radius:10px;overflow:hidden;
  background:#fff;border:1px solid var(--line);
  box-shadow:0 6px 14px rgba(127,181,218,.10);
  transition:transform .25s ease, box-shadow .25s ease;
}
.patent-cert:hover{transform:translateY(-3px);box-shadow:0 14px 28px rgba(109,195,176,.18)}
.patent-cert img{width:100%;height:100%;object-fit:cover;display:block}
.patent-cert--empty{
  width:100%;height:100%;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:10px;padding:14px;
  background:linear-gradient(180deg,#fff 0%,var(--bg-soft) 100%);
  color:var(--brand-teal);text-align:center;
}
.patent-cert--empty .material-symbols-outlined{font-size:42px;opacity:.6}
.patent-cert--empty .t{font-size:11px;font-weight:600;color:var(--ink);line-height:1.35}

/* ===== MILESTONES PAGE ===== */
.ms-list{margin-top:32px;position:relative;padding-left:32px}
.ms-list::before{content:'';position:absolute;left:8px;top:8px;bottom:8px;width:2px;background:linear-gradient(180deg,var(--brand-mint),var(--brand-blue))}
.ms-item{position:relative;padding-bottom:48px}
.ms-item::before{content:'';position:absolute;left:-32px;top:8px;width:18px;height:18px;border-radius:50%;background:#fff;border:3px solid var(--brand-teal);box-shadow:0 0 0 4px rgba(109,195,176,.18)}
.ms-item .y{font-size:36px;font-weight:700;letter-spacing:-1px;color:var(--ink);margin:0 0 12px}
.ms-item ul{margin:0;padding-left:20px;color:var(--body);font-size:15px;line-height:1.85}
.ms-item ul li{margin-bottom:8px}

/* ===== NEWS LIST ===== */
.news-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:32px}
.news-list-card{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;display:flex;flex-direction:column;transition:transform .25s ease, box-shadow .25s ease}
.news-list-card:hover{transform:translateY(-4px);box-shadow:0 14px 28px rgba(109,195,176,.18)}
.news-list-card .img{position:relative;height:180px;overflow:hidden;display:flex;align-items:flex-end;padding:14px}
.news-list-card .img > img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block;z-index:0}
.news-list-card .chip{position:relative;z-index:1;padding:4px 10px;border-radius:999px;background:rgba(255,255,255,.85);color:var(--ink);font-size:10px;font-weight:700;letter-spacing:.5px}
.news-list-card .body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-list-card .date{font-size:11px;font-weight:600;letter-spacing:1px;color:var(--muted)}
.news-list-card h4{font-size:17px;font-weight:700;line-height:1.4;margin:0;color:var(--ink)}
.news-list-card p{font-size:13px;line-height:1.6;color:var(--body);margin:0}

.cat-tabs{display:flex;gap:8px;padding:6px;border-radius:999px;background:var(--bg-soft);width:fit-content}
.cat-tab{padding:8px 16px;border-radius:999px;font-size:13px;font-weight:500;color:var(--body)}
.cat-tab.active{background:var(--grad-brand);color:#fff;font-weight:600}

/* ===== TECH PAGE ===== */
.tech-hero-meta{display:flex;gap:14px;margin-top:18px;flex-wrap:wrap}
.tech-hero-meta .pill{padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.7);border:1px solid rgba(109,195,176,.4);font-size:12px;font-weight:600;color:var(--brand-teal);letter-spacing:.5px}
.tech-hl{
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:40px 0;
}
.tech-hl .item{background:var(--bg-soft);border:1px solid rgba(109,195,176,.2);border-radius:14px;padding:22px;display:flex;flex-direction:column;gap:6px}
.tech-hl .k{font-size:12px;font-weight:600;letter-spacing:.8px;color:var(--brand-teal)}
.tech-hl .v{font-size:22px;font-weight:700;color:var(--ink);letter-spacing:-.4px}

/* ================================================================ */
/* RESPONSIVE                                                       */
/* ================================================================ */
@media (max-width:1100px){
  .container{padding:0 40px}
  .nav{padding:0 40px}
  section{padding:80px 0}
  h3.section-title{font-size:36px}
  .section-title-sm{font-size:32px}
  .subhero h1{font-size:42px}
  .honors-page-grid{grid-template-columns:repeat(3,1fr)}
  .news-list{grid-template-columns:repeat(2,1fr)}
  .patent-wall{grid-template-columns:repeat(4,1fr)}
  .honor-section-head h2{font-size:28px}
  .tech-hl{grid-template-columns:repeat(2,1fr)}
  .cta-inner{flex-direction:column;gap:24px}
  .footer-top{flex-direction:column;gap:40px}
  .footer-brand{width:auto}
  .footer-cols{flex-wrap:wrap;gap:32px}
}

@media (max-width:700px){
  html,body{overflow-x:hidden}
  .container{padding:0 20px}
  .nav{padding:0 20px;height:60px}
  .nav-links{display:none}
  .logo-text{font-size:18px}
  .nav-cta{padding:8px 14px;font-size:12px}
  section{padding:64px 0}
  .subhero{padding:48px 0 40px}
  .subhero h1{font-size:30px;letter-spacing:-1px}
  .subhero .lead{font-size:14px}
  h3.section-title,.section-title-sm{font-size:26px;letter-spacing:-.8px;line-height:1.25}
  .section-desc{font-size:14px}
  .subpage{padding:48px 0 64px}
  .subpage h2{font-size:24px}
  .subpage h3{font-size:18px}
  .subpage p,.subpage ul{font-size:14px}
  .honors-page-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .news-list{grid-template-columns:1fr;gap:14px}
  .patent-wall{grid-template-columns:repeat(3,1fr);gap:10px}
  .honor-page-card{padding:14px}
  .honor-page-card .honor-img{height:180px;padding:10px}
  .honor-section{margin-bottom:48px}
  .honor-section-head{margin:32px 0 20px}
  .honor-section-head h2{font-size:24px}
  .honor-section-head .honor-section-en{font-size:12px;letter-spacing:1.4px}
  .tech-hl{grid-template-columns:1fr 1fr;gap:10px}
  .tech-hl .item{padding:14px}
  .tech-hl .v{font-size:17px}
  .ms-list{padding-left:24px}
  .ms-item .y{font-size:26px}
  .cta{padding:56px 0}
  .cta-left h3{font-size:28px}
  .cta-form{width:100%;padding:24px}
  .cta-qrs{width:100%;padding:24px;gap:20px}
  .cta-qr img{width:140px;height:140px}
  .footer{padding:48px 0 24px}
  .footer-cols{flex-direction:column;gap:24px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px}
}