:root{--primary:#1D94FF;--primary-dark:#0d7de8;--primary-light:#EBF5FF;--qingqu:#F8D548;--quhaom:#FE2E01;--text:#1d1d1f;--text2:#6e6e73;--text3:#86868b;--bg:#fff;--bg2:#f5f5f7;--bgc:#fff;--border:#d2d2d7;--border2:#e8e8ed;--r:16px;--rs:10px;--rx:6px;--sh:0 4px 16px rgba(0,0,0,.06);--shl:0 12px 40px rgba(0,0,0,.08);--t:.35s cubic-bezier(.4,0,.2,1);--tf:.2s cubic-bezier(.4,0,.2,1)}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body{font-family:'Noto Sans SC',-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden}
a{text-decoration:none;color:inherit}ul{list-style:none}img{max-width:100%;display:block}
.container{max-width:1120px;margin:0 auto;padding:0 24px}
.placeholder-svg{width:100%;height:auto;display:block}

/* Nav */
.navbar{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.85);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid rgba(0,0,0,.06);transition:var(--t)}
.nav-container{display:flex;align-items:center;justify-content:space-between;height:56px;gap:12px}
.logo{display:flex;align-items:center;gap:8px;min-width:0;overflow:hidden}
.logo-img{height:36px;width:auto;flex-shrink:0}
.logo-name{font-size:1.05rem;font-weight:600;color:#3a3b40;letter-spacing:.5px;border-right:1px solid var(--border2);padding-right:10px;margin-right:2px;line-height:1;white-space:nowrap;flex-shrink:0}
.logo-cert{font-size:.62rem;color:var(--text3);border:1px solid var(--border2);padding:3px 8px;border-radius:980px;white-space:nowrap;line-height:1;flex-shrink:0}
.nav-links{display:flex;gap:24px}
.nav-links a{font-size:.88rem;color:var(--text2);transition:var(--tf);padding:4px 0;position:relative}
.nav-links a:hover,.nav-links a.active-link{color:var(--text)}
.nav-links a::after{content:'';position:absolute;bottom:-2px;left:50%;width:0;height:1.5px;background:var(--primary);transition:var(--tf);transform:translateX(-50%)}
.nav-links a:hover::after,.nav-links a.active-link::after{width:100%}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px}
.nav-toggle span{width:20px;height:1.5px;background:var(--text);transition:var(--t)}
.nav-toggle.active span:nth-child(1){transform:rotate(45deg) translate(4.5px,4.5px)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(4.5px,-4.5px)}

/* Hero */
.hero{position:relative;padding:120px 0 0;overflow:hidden;background:linear-gradient(135deg,var(--primary-light) 0%,#F5F5F7 50%,#fff 100%)}
.hero-bg{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.hero-shape{position:absolute;border-radius:50%;opacity:.12}
.hero-shape-1{width:500px;height:500px;background:var(--primary);top:-150px;right:-100px}
.hero-shape-2{width:300px;height:300px;background:var(--qingqu);bottom:-80px;left:-60px}
.hero-inner{display:flex;align-items:center;gap:48px;position:relative;z-index:2}
.hero-text{flex:1}
.hero-tagline{font-size:.85rem;color:var(--primary);letter-spacing:4px;font-weight:600;margin-bottom:16px}
.hero-title{font-size:clamp(2rem,5vw,3.2rem);font-weight:900;line-height:1.2;margin-bottom:12px;letter-spacing:-.02em}
.hero-title .text-primary{color:var(--primary)}
.hero-sub{font-size:.95rem;color:var(--text2);margin-bottom:32px;line-height:1.7}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-visual{flex-shrink:0;width:300px}
.hero-visual img{width:100%;height:auto;border-radius:var(--r);box-shadow:var(--shl)}
.hero-stats-bar{position:relative;z-index:2;margin-top:48px;padding-bottom:48px}
.hero-stats{display:flex;background:var(--bgc);border-radius:var(--r);box-shadow:var(--shl);padding:28px 0;border:1px solid var(--border2)}
.h-stat{flex:1;text-align:center;padding:0 16px}
.h-stat-num{font-size:1.8rem;font-weight:700;display:inline;letter-spacing:-.02em}
.h-stat-unit{font-size:.85rem;color:var(--primary);font-weight:600}
.h-stat-label{display:block;font-size:.72rem;color:var(--text3);margin-top:2px}
.h-stat-line{width:1px;background:var(--border2)}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:6px;padding:12px 28px;border-radius:980px;font-size:.88rem;font-weight:500;transition:var(--t);border:none;cursor:pointer;font-family:inherit}
.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:var(--sh)}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--border)}.btn-ghost:hover{border-color:var(--text);background:var(--bg2)}
.btn-lg{padding:14px 36px;font-size:.92rem}

/* Animations */
.anim-fade-up{opacity:0;transform:translateY(24px);animation:fadeUp .8s cubic-bezier(.25,.46,.45,.94) forwards}
.d1{animation-delay:.12s}.d2{animation-delay:.24s}.d3{animation-delay:.36s}.d4{animation-delay:.48s}
@keyframes fadeUp{to{opacity:1;transform:translateY(0)}}
.anim-item{opacity:0;transform:translateY(20px);transition:opacity .6s cubic-bezier(.25,.46,.45,.94),transform .6s cubic-bezier(.25,.46,.45,.94)}
.anim-item.visible{opacity:1;transform:translateY(0)}

/* Section */
.section{padding:88px 0}
.sec-head{text-align:center;margin-bottom:48px}
.sec-tag{font-size:.68rem;letter-spacing:4px;color:var(--primary);text-transform:uppercase;font-weight:600;display:block;margin-bottom:6px}
.sec-head h2{font-size:clamp(1.5rem,3.5vw,2rem);font-weight:700;letter-spacing:-.02em;margin-bottom:8px}
.sec-head p{font-size:.9rem;color:var(--text2);max-width:520px;margin:0 auto;font-weight:300}
.sec-cta{text-align:center;margin-top:32px}

/* Feature Grid */
.feat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.feat-grid.cols-3{grid-template-columns:repeat(3,1fr)}
.feat-grid.cols-4{grid-template-columns:repeat(4,1fr)}
.feat-card{background:var(--bgc);border:1px solid var(--border2);border-radius:var(--r);padding:28px 24px;transition:var(--t)}
.feat-card:hover{transform:translateY(-4px);box-shadow:var(--shl);border-color:rgba(29,148,255,.2)}
.feat-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:14px;background:var(--primary-light)}
.feat-icon svg{stroke:var(--primary)}
.feat-card h4{font-size:1rem;font-weight:600;margin-bottom:6px}
.feat-card p{font-size:.82rem;color:var(--text2);line-height:1.6}

/* Mode Grid */
.mode-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.mode-card{background:var(--bgc);border:1px solid var(--border2);border-radius:var(--r);padding:28px 24px;transition:var(--t);position:relative}
.mode-card:hover{transform:translateY(-4px);box-shadow:var(--shl)}
.mode-tag{position:absolute;top:16px;right:16px;font-size:.7rem;font-weight:700;padding:3px 10px;border-radius:980px;background:var(--primary);color:#fff}
.mode-card h4{font-size:1.05rem;font-weight:700;margin-bottom:10px}
.mode-card ul{list-style:none}
.mode-card li{font-size:.82rem;color:var(--text2);padding:3px 0 3px 14px;position:relative;line-height:1.6}
.mode-card li::before{content:'';position:absolute;left:0;top:10px;width:4px;height:4px;background:var(--primary);border-radius:50%}

/* Biz Row */
.biz-row{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.biz-block{display:block;background:var(--bgc);border:1px solid var(--border2);border-radius:var(--r);padding:32px 28px;transition:var(--t);border-top:3px solid var(--primary)}
.biz-block:hover{transform:translateY(-6px);box-shadow:var(--shl)}
.biz-block-head{display:flex;align-items:center;gap:10px;margin-bottom:10px;flex-wrap:wrap}
.biz-no{font-size:2.2rem;font-weight:900;opacity:.12;color:var(--primary);line-height:1}
.biz-block-head h3{font-size:1.15rem;font-weight:700}
.biz-slogan{font-size:.85rem;font-weight:500;color:var(--primary);margin-bottom:12px}
.biz-points li{font-size:.82rem;color:var(--text2);line-height:1.7;padding:3px 0 3px 16px;position:relative}
.biz-points li::before{content:'';position:absolute;left:0;top:11px;width:5px;height:5px;border-radius:50%;background:var(--primary)}

/* Flow Images */
.flow-images{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-bottom:32px}
.flow-img-card{background:var(--bgc);border:1px solid var(--border2);border-radius:var(--r);overflow:hidden;transition:var(--t);text-align:center}
.flow-img-card:hover{box-shadow:var(--shl);transform:translateY(-4px)}
.flow-img-card img{width:100%;height:auto;display:block}
.flow-img-card p{padding:14px;font-size:.88rem;font-weight:600}

/* App Showcase */
.app-showcase{display:flex;align-items:center;gap:40px;background:var(--bgc);border:1px solid var(--border2);border-radius:var(--r);padding:36px;box-shadow:var(--sh)}
.app-showcase-img{flex-shrink:0;width:240px}
.app-showcase-img img{width:100%;height:auto;border-radius:var(--rs);box-shadow:var(--shl)}
.app-showcase-info{flex:1}
.app-showcase-info h3{font-size:1.3rem;font-weight:700;margin-bottom:8px}
.app-showcase-info p{font-size:.88rem;color:var(--text2);line-height:1.7}

/* Industry Tags */
.tag-list{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:8px}
.ind-tag{padding:8px 20px;border:1px solid var(--primary);color:var(--primary);border-radius:980px;font-size:.82rem;font-weight:500;transition:var(--t)}
.ind-tag:hover{background:var(--primary);color:#fff}

/* CTA Banner */
.sec-cta-banner{background:var(--bg);padding:48px 0 88px}
.cta-banner{background:linear-gradient(135deg,var(--primary),#4da8ff);border-radius:var(--r);padding:48px 40px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-text h2{font-size:1.5rem;font-weight:700;color:#fff;margin-bottom:6px}
.cta-text p{font-size:.9rem;color:rgba(255,255,255,.8)}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta-actions .btn-primary{background:#fff;color:var(--primary)}.cta-actions .btn-primary:hover{background:#f0f0f0}
.cta-actions .btn-ghost{border-color:rgba(255,255,255,.5);color:#fff}.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.1)}

/* Footer */
.footer{background:var(--text);color:rgba(255,255,255,.7);padding:56px 0 0}
.footer-main{display:flex;gap:40px;padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.1);align-items:flex-start}
.footer-logo-img{height:28px;width:auto;margin-bottom:8px}
.footer-brand p{font-size:.82rem;line-height:1.6}
.footer-warn{font-size:.72rem;color:rgba(255,255,255,.4);margin-top:4px}
.footer-cols{display:flex;gap:48px;flex:1}
.footer-col{display:flex;flex-direction:column;gap:6px}
.footer-col h6{font-size:.78rem;font-weight:600;color:#fff;margin-bottom:4px}
.footer-col a,.footer-col span{font-size:.78rem;color:rgba(255,255,255,.5);transition:var(--tf);display:block;line-height:1.5}
.footer-col a:hover{color:var(--primary)}
.footer-qr{flex-shrink:0;text-align:center}
.qr-box{width:100px;height:100px;border-radius:var(--rx);overflow:hidden;border:1px solid rgba(255,255,255,.1)}
.footer-qr p{font-size:.68rem;color:rgba(255,255,255,.4);margin-top:6px}
.footer-links{padding:16px 0;font-size:.72rem;color:rgba(255,255,255,.35);display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.footer-links a{color:rgba(255,255,255,.45);transition:var(--tf)}.footer-links a:hover{color:var(--primary)}
.footer-bottom{padding:16px 0;border-top:1px solid rgba(255,255,255,.06);text-align:center}
.footer-bottom p{font-size:.68rem;color:rgba(255,255,255,.3)}
.footer-bottom a{color:inherit}

/* Back to Top */
.back-to-top{position:fixed;bottom:32px;right:32px;z-index:900;width:44px;height:44px;border-radius:50%;background:var(--bgc);border:1px solid var(--border2);box-shadow:var(--sh);display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;transform:translateY(10px);transition:var(--t);pointer-events:none}
.back-to-top.visible{opacity:1;transform:translateY(0);pointer-events:all}

/* Float Consult */
.float-consult{position:fixed;right:32px;bottom:90px;z-index:900;display:flex;align-items:center;gap:6px;padding:12px 20px;background:var(--primary);color:#fff;border-radius:980px;font-size:.85rem;font-weight:600;cursor:pointer;box-shadow:0 4px 20px rgba(29,148,255,.4);transition:var(--t);border:none}
.float-consult:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(29,148,255,.5)}

/* Consult Modal */
.consult-overlay{position:fixed;inset:0;z-index:10000;background:rgba(0,0,0,.45);backdrop-filter:blur(10px);display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity .3s ease;padding:24px}
.consult-overlay.active{opacity:1;pointer-events:all}
.consult-modal{background:var(--bgc);border-radius:20px;max-width:400px;width:100%;box-shadow:0 24px 80px rgba(0,0,0,.15);position:relative;transform:scale(.92) translateY(16px);transition:transform .35s cubic-bezier(.25,.46,.45,.94)}
.consult-overlay.active .consult-modal{transform:scale(1) translateY(0)}
.consult-close{position:absolute;top:12px;right:12px;background:var(--bg2);border:none;border-radius:50%;width:32px;height:32px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:var(--t);z-index:10}
.consult-body{padding:32px 28px;text-align:center}
.consult-qr{width:160px;height:160px;margin:0 auto 20px;border-radius:var(--rs);overflow:hidden;border:1px solid var(--border2)}
.consult-qr img{width:100%;height:100%;object-fit:contain}
.consult-body h3{font-size:1.2rem;font-weight:700;margin-bottom:4px}
.consult-desc{font-size:.82rem;color:var(--text3);margin-bottom:20px}
.consult-items{display:flex;flex-direction:column;gap:10px;text-align:left}
.consult-item{display:flex;align-items:center;gap:10px;padding:12px 16px;background:var(--bg2);border-radius:var(--rs);font-size:.85rem;color:var(--text);transition:var(--tf);text-decoration:none;border:1px solid transparent}
.consult-item:hover{border-color:rgba(29,148,255,.2);background:var(--primary-light)}
.wechat-id{font-weight:600;flex:1}
.copy-btn{padding:4px 14px;background:var(--primary);color:#fff;border:none;border-radius:980px;font-size:.72rem;font-weight:600;cursor:pointer;font-family:inherit}
.toast{position:fixed;bottom:80px;left:50%;transform:translateX(-50%) translateY(20px);background:var(--text);color:#fff;padding:12px 28px;border-radius:980px;font-size:.85rem;z-index:10001;opacity:0;pointer-events:none;transition:opacity .3s,transform .3s}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* Responsive */
@media(max-width:1024px){
  .feat-grid,.feat-grid.cols-3,.feat-grid.cols-4{grid-template-columns:repeat(2,1fr)}
  .biz-row{grid-template-columns:1fr}
  .mode-grid{grid-template-columns:repeat(2,1fr)}
  .hero-inner{flex-direction:column;text-align:center}
  .hero-text{order:1}.hero-visual{order:0;width:240px}
  .hero-actions{justify-content:center}
  .footer-main{flex-wrap:wrap}.footer-cols{flex-wrap:wrap;gap:32px}
  .footer-qr{display:none}
  .app-showcase{flex-direction:column;text-align:center;padding:24px}
  .app-showcase-img{width:180px}
  .logo-name{font-size:.92rem}.logo-cert{font-size:.55rem;padding:2px 6px}
}
@media(max-width:768px){
  .nav-toggle{display:flex}
  .logo-img{height:30px}.logo-name{font-size:.92rem;padding-right:6px;border-right:none}.logo-cert{font-size:.65rem;padding:2px 6px;display:inline}
  .nav-links{position:fixed;top:56px;left:0;right:0;background:rgba(255,255,255,.98);backdrop-filter:blur(20px);flex-direction:column;padding:12px 24px;gap:0;transform:translateY(-120%);opacity:0;transition:var(--t);pointer-events:none;border-bottom:1px solid var(--border2);max-height:70vh;overflow-y:auto}
  .nav-links.active{transform:translateY(0);opacity:1;pointer-events:all}
  .nav-links li{border-bottom:1px solid var(--border2)}
  .nav-links a{display:block;padding:12px 0;font-size:.92rem}
  .hero{padding:90px 0 0}.hero-visual{width:180px}
  .hero-stats{flex-direction:column;gap:0;padding:20px}
  .h-stat{padding:10px 0}.h-stat-line{width:100%;height:1px}
  .section{padding:56px 0}
  .feat-grid,.feat-grid.cols-3,.feat-grid.cols-4,.biz-row,.mode-grid{grid-template-columns:1fr}
  .flow-images{grid-template-columns:1fr}
  .cta-banner{flex-direction:column;text-align:center;padding:32px 24px}
  .footer-main{flex-direction:column;gap:24px}.footer-cols{gap:24px}
  .float-consult{right:16px;bottom:70px;padding:10px 16px;font-size:.8rem}
  .float-consult span{display:none}
  .back-to-top{bottom:20px;right:20px;width:40px;height:40px}
}