:root{
  --nb-blue:#0D56A6;
  --nb-blue-light:#4186D3;
  --nb-blue-deep:#0A437F;
  --nb-orange:#FF7400;
  --nb-orange-light:#FFB273;
  --nb-ink:#1F2937;
  --nb-gray:#6B7280;
  --nb-bg:#F5F7FA;
  --nb-line:#E5E9F0;
  --maxw:1120px;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;overflow-x:hidden;}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  color:var(--nb-ink);background:#fff;line-height:1.7;font-size:16px;
}
a{color:inherit;text-decoration:none;}
.screen{scroll-snap-align:start;}

/* ===== Header (minimal) ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;
  height:72px;padding:0 24px;
  background:transparent;transition:background .25s ease, box-shadow .25s ease;
}
.site-header.solid{background:#fff;box-shadow:0 1px 0 var(--nb-line);}
.brand{display:inline-flex;align-items:center;}
.site-header.solid .brand{background:transparent;}
.logo-img{height:40px;width:auto;max-width:min(46vw,360px);display:block;}
.logo-color{display:none;}
.site-header.solid .logo-white{display:none;}
.site-header.solid .logo-color{display:block;}
.nav{display:flex;align-items:center;gap:28px;}
.nav a{color:#fff;font-size:15px;opacity:.92;transition:color .2s;position:relative;}
.site-header.solid .nav a{color:var(--nb-ink);}
.nav a:hover{color:var(--nb-orange);}
.lang{font-size:14px;font-weight:600;padding:6px 12px;border:1px solid rgba(255,255,255,.6);border-radius:999px;color:#fff;transition:.2s;}
.site-header.solid .lang{border-color:var(--nb-line);color:var(--nb-blue);}
.lang:hover{background:var(--nb-orange);border-color:var(--nb-orange);color:#fff;}

/* ===== Hero ===== */
.hero{
  min-height:100vh;display:flex;flex-direction:column;justify-content:center;align-items:center;
  text-align:center;padding:120px 24px 80px;color:#fff;position:relative;overflow:hidden;
  background:
    radial-gradient(1200px 600px at 70% -10%, rgba(65,134,211,.55), transparent 60%),
    radial-gradient(900px 500px at 10% 110%, rgba(255,116,0,.18), transparent 55%),
    linear-gradient(160deg,var(--nb-blue-deep),var(--nb-blue) 55%,var(--nb-blue-light));
}
.hero .eyebrow{font-size:14px;margin-bottom:18px;}
.hero .eyebrow .mark{text-transform:none;letter-spacing:normal;font-weight:600;}
.hero .eyebrow .dot{opacity:.6;margin:0 6px;}
.hero .eyebrow .desc{text-transform:uppercase;letter-spacing:4px;opacity:.85;}
.hero h1{font-size:clamp(34px,6vw,64px);font-weight:800;line-height:1.15;margin-bottom:18px;letter-spacing:1px;}
.hero p.lead{font-size:clamp(16px,2.4vw,20px);max-width:680px;opacity:.92;margin-bottom:34px;}
.hero .actions{display:flex;gap:16px;flex-wrap:wrap;justify-content:center;}
.btn{display:inline-block;padding:13px 30px;border-radius:999px;font-size:16px;font-weight:600;transition:.2s;cursor:pointer;}
.btn-primary{background:#fff;color:var(--nb-blue);}
.btn-primary:hover{background:var(--nb-orange);color:#fff;transform:translateY(-2px);}
.btn-ghost{border:1px solid rgba(255,255,255,.7);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;}
.scroll-hint{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);color:#fff;opacity:.7;font-size:13px;animation:bob 1.8s infinite;}
@keyframes bob{0%,100%{transform:translate(-50%,0);}50%{transform:translate(-50%,8px);}}

/* ===== Generic section ===== */
.section{padding:96px 24px;}
.section .wrap{max-width:var(--maxw);margin:0 auto;}
.section.alt{background:var(--nb-bg);}
.section.tight{padding:72px 24px;}
.sec-head{text-align:center;margin-bottom:48px;}
.sec-head .kicker{color:var(--nb-orange);font-weight:700;letter-spacing:2px;font-size:13px;}
.sec-head h2{font-size:clamp(26px,4vw,38px);font-weight:800;margin-top:8px;color:var(--nb-ink);}
.sec-head p{color:var(--nb-gray);margin-top:12px;max-width:620px;margin-left:auto;margin-right:auto;}
#about .sec-head p{text-align:justify;text-indent:2em;max-width:760px;color:var(--nb-ink);line-height:1.9;}

/* ===== Partners (三方共建) ===== */
.partners{margin-top:56px;padding-top:48px;border-top:1px solid var(--nb-line);}
.partners-head{text-align:center;margin-bottom:36px;}
.partners-head .kicker{color:var(--nb-orange);font-weight:700;letter-spacing:2px;font-size:13px;}
.partners-head h3{font-size:clamp(22px,3.4vw,30px);font-weight:800;margin-top:8px;color:var(--nb-ink);}
.partners-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.partner{display:flex;flex-direction:column;align-items:center;background:#fff;border:1px solid var(--nb-line);border-radius:16px;padding:32px 28px;text-align:center;transition:.25s;text-decoration:none;color:inherit;cursor:pointer;}
.partner:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(13,86,166,.10);border-color:var(--nb-blue-light);}
.partner .go{margin-top:auto;padding-top:16px;color:var(--nb-orange);font-size:13px;font-weight:700;letter-spacing:.02em;transition:.2s;}
.partner:hover .go{color:var(--nb-blue);}
.partner .logo-box{height:80px;display:flex;align-items:center;justify-content:center;margin-bottom:20px;}
.partner .logo-box img{max-height:64px;width:auto;max-width:100%;object-fit:contain;}
.partner h4{font-size:18px;font-weight:800;margin-bottom:12px;color:var(--nb-ink);}
.partner p{font-size:14px;color:var(--nb-gray);line-height:1.85;text-align:justify;}

/* ===== Services grid (创业服务) ===== */
.svc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:8px;}
.svc{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:6px;background:#fff;border:1px solid var(--nb-line);border-radius:14px;padding:30px 16px;min-height:118px;transition:.2s;color:var(--nb-ink);}
.svc:hover{border-color:var(--nb-orange);transform:translateY(-3px);box-shadow:0 12px 26px rgba(13,86,166,.10);}
.svc .t{font-size:16px;font-weight:700;}
.svc:hover .t{color:var(--nb-blue);}

/* ===== Party doc (党员服务页) ===== */
.party-doc{max-width:840px;margin:0 auto;color:var(--nb-ink);}
.party-doc h3{font-size:24px;margin:4px 0 18px;color:var(--nb-blue);}
.party-doc h4{font-size:19px;margin:26px 0 12px;color:var(--nb-blue);}
.party-doc h5{font-size:16px;margin:16px 0 8px;font-weight:700;}
.party-doc p{margin:10px 0;color:var(--nb-gray);line-height:1.9;}
.party-doc ul,.party-doc ol{margin:10px 0 12px 24px;}
.party-doc li{margin:6px 0;color:var(--nb-gray);line-height:1.8;}
.party-doc .note{background:var(--nb-bg);border-left:3px solid var(--nb-orange);padding:12px 16px;border-radius:0 8px 8px 0;color:var(--nb-ink);}
.party-doc strong{color:var(--nb-ink);}
@media (max-width:880px){.svc-grid{grid-template-columns:repeat(2,1fr);}}

/* ===== Founder cards ===== */
.cards3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{background:#fff;border:1px solid var(--nb-line);border-radius:16px;padding:32px 28px;transition:.25s;}
.section.alt .card{background:#fff;}
.card:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(13,86,166,.12);border-color:var(--nb-blue-light);}
.card .ico{width:46px;height:46px;border-radius:12px;background:var(--nb-blue);color:#fff;display:grid;place-items:center;font-size:20px;font-weight:800;margin-bottom:16px;}
.card h3{font-size:20px;margin-bottom:8px;color:var(--nb-blue);}
.card p{color:var(--nb-gray);font-size:15px;}

/* ===== Ecosystem 6 ===== */
.grid6{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.cell{background:#fff;border:1px solid var(--nb-line);border-radius:14px;padding:24px;display:flex;gap:14px;align-items:flex-start;transition:.2s;}
.cell:hover{border-color:var(--nb-orange);background:#fff;}
.cell .n{font-size:22px;font-weight:800;color:var(--nb-orange);min-width:34px;}
.cell h4{font-size:17px;color:var(--nb-ink);margin-bottom:4px;}
.cell p{font-size:14px;color:var(--nb-gray);}

/* ===== Stats ===== */
.stats{background:linear-gradient(135deg,var(--nb-blue-deep),var(--nb-blue));color:#fff;}
.stats .grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center;}
.stats .num{font-size:clamp(34px,5vw,52px);font-weight:800;line-height:1;}
.stats .num small{font-size:20px;font-weight:700;margin-left:2px;}
.stats .lab{margin-top:10px;opacity:.9;font-size:15px;}

/* ===== News / 创业资讯 ===== */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-more-wrap{text-align:center;margin-top:40px;}
.news-follow{margin:22px 0 2px;text-align:center;color:var(--nb-gray);font-size:14px;letter-spacing:.3px;}
.news-more{display:inline-block;padding:12px 30px;border:1px solid var(--nb-blue);color:var(--nb-blue);border-radius:999px;font-weight:700;font-size:15px;transition:.2s;}
.news-more:hover{background:var(--nb-blue);color:#fff;transform:translateY(-2px);}
.pager{display:flex;justify-content:center;align-items:center;gap:12px;margin-top:44px;flex-wrap:wrap;}
.pager a,.pager span{padding:9px 16px;border:1px solid var(--nb-line);border-radius:10px;color:var(--nb-ink);font-size:14px;transition:.2s;line-height:1;}
.pager a:hover{background:var(--nb-blue);color:#fff;border-color:var(--nb-blue);}
.pager .cur{background:var(--nb-blue);color:#fff;border-color:var(--nb-blue);font-weight:700;}
.pager .disabled{color:#b8c0cc;cursor:not-allowed;}
.news-card{background:#fff;border:1px solid var(--nb-line);border-radius:16px;overflow:hidden;transition:.25s;display:flex;flex-direction:column;color:var(--nb-ink);}
.news-card:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(13,86,166,.12);border-color:var(--nb-blue-light);}
.news-card .cover{aspect-ratio:16/9;background:linear-gradient(135deg,var(--nb-blue-light),var(--nb-blue));overflow:hidden;}
.news-card .cover img{width:100%;height:100%;object-fit:cover;display:block;}
.news-card .body{padding:20px 22px;flex:1;display:flex;flex-direction:column;gap:8px;}
.news-card .date{color:var(--nb-gray);font-size:13px;font-weight:600;}
.news-card h4{font-size:17px;font-weight:800;color:var(--nb-ink);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card .body p{color:var(--nb-gray);font-size:14px;line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-card .cat{display:inline-block;align-self:flex-start;background:rgba(13,86,166,.08);color:var(--nb-blue);font-size:12px;font-weight:700;letter-spacing:.02em;padding:3px 11px;border-radius:999px;margin-bottom:4px;}
/* 每篇统一为带封面区的模块卡（有图用图，无图用品牌渐变占位） */
.news-card .cover-ph{display:grid;place-items:center;}
.news-card .cover-ph span{color:#fff;font-size:15px;font-weight:800;letter-spacing:.04em;padding:0 16px;text-align:center;}
.news-empty{grid-column:1/-1;text-align:center;color:var(--nb-gray);background:var(--nb-bg);border:1px dashed var(--nb-line);border-radius:16px;padding:48px 20px;font-size:15px;}

/* ===== CTA band ===== */
.cta{background:var(--nb-orange);color:#fff;text-align:center;padding:80px 24px;}
.cta h2{font-size:clamp(24px,4vw,36px);font-weight:800;margin-bottom:14px;}
.cta p{opacity:.95;margin-bottom:28px;font-size:17px;}
.cta .btn-white{background:#fff;color:var(--nb-orange);}
.cta .btn-white:hover{background:var(--nb-blue);color:#fff;transform:translateY(-2px);}
.cta-row{display:flex;align-items:center;justify-content:center;gap:48px;flex-wrap:wrap;}
.cta-qr img{width:120px;height:120px;border-radius:12px;background:#fff;padding:8px;}

/* ===== QR codes ===== */
.qr{display:flex;flex-direction:column;align-items:center;gap:8px;}
.qr img{width:96px;height:96px;border-radius:10px;background:#fff;padding:6px;box-shadow:0 4px 12px rgba(0,0,0,.12);}
.qr span{font-size:13px;color:inherit;opacity:.95;}
.qr-grid{display:flex;gap:18px;}
.qr-row{display:flex;justify-content:center;align-items:flex-start;gap:48px;flex-wrap:wrap;margin-top:36px;}
.qr-row .qr img{width:120px;height:120px;border-radius:12px;background:#fff;padding:8px;box-shadow:0 6px 18px rgba(0,0,0,.18);}

/* ===== Footer ===== */
.footer{background:#111827;color:#cbd5e1;padding:64px 24px 32px;}
.footer .wrap{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.footer h5{color:#fff;font-size:16px;margin-bottom:14px;}
.footer p,.footer a{color:#9aa6b8;font-size:14px;line-height:1.9;}
.footer a:hover{color:var(--nb-orange-light);}
.footer .copy{grid-column:1/-1;border-top:1px solid #1f2937;margin-top:24px;padding-top:18px;color:#6b7280;font-size:13px;}
.footer .copy a{color:#6b7280;text-decoration:none;border-bottom:1px solid transparent;transition:color .2s,border-color .2s;}
.footer .copy a:hover{color:#4186d3;border-bottom-color:#4186d3;}

/* ===== Responsive ===== */
@media (max-width:1100px){
  .news-grid{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:880px){
  .cards3,.grid6,.news-grid,.stats .grid4,.partners-grid{grid-template-columns:1fr 1fr;}
  .footer .wrap{grid-template-columns:1fr 1fr;}
  .cta-row{gap:28px;}
  .qr-row{gap:24px;}
  .qr-row .qr img{width:96px;height:96px;}
  .logo-img{height:30px;max-width:min(50vw,300px);}
  .brand{padding:0;}
}
@media (max-width:620px){
  .nav{display:none;}
  .cards3,.grid6,.news,.stats .grid4,.partners-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .footer .wrap{grid-template-columns:1fr;}
  .section{padding:64px 20px;}
  .hero{padding:110px 20px 70px;}
  .partner{padding:28px 22px;}
}