*{margin:0;padding:0;box-sizing:border-box}
:root{
  --primary:#1a6dff;
  --primary-dark:#0d47a1;
  --primary-light:#e8f0ff;
  --dark:#1a2233;
  --gray:#6b7280;
  --light:#f6f8fc;
  --border:#e5e9f2;
  --accent:#ff6b35;
}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--dark);line-height:1.6;background:#fff;overflow-x:hidden}
a{text-decoration:none;color:inherit}
img{max-width:100%}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ===== Header ===== */
.header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);transition:box-shadow .3s}
.header.scrolled{box-shadow:0 2px 20px rgba(0,0,0,.08)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:700;color:var(--primary)}
.logo-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--primary),#6a3ef7);border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;font-weight:800}
.logo-img{height:40px;width:auto;display:block}
.footer-logo{height:44px;filter:brightness(0) invert(1);opacity:.9}
.footer-text-logo{color:#fff;font-size:24px;font-weight:700;letter-spacing:2px;margin-bottom:16px}
.nav-links{display:flex;gap:36px;list-style:none}
.nav-links a{font-size:15px;color:var(--dark);font-weight:500;transition:color .2s}
.nav-links a:hover{color:var(--primary)}
.nav-cta{background:var(--primary);color:#fff;padding:10px 24px;border-radius:6px;font-size:14px;font-weight:600;border:none;cursor:pointer;transition:all .2s}
.nav-cta:hover{background:var(--primary-dark);transform:translateY(-1px)}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none;padding:4px}
.hamburger span{width:24px;height:2px;background:var(--dark);transition:.3s}

/* ===== Hero ===== */
.hero{padding:160px 0 100px;background:linear-gradient(160deg,#eef4ff 0%,#f8faff 50%,#fff 100%);position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-200px;right:-200px;width:600px;height:600px;background:radial-gradient(circle,rgba(26,109,255,.08) 0%,transparent 70%);border-radius:50%}
.hero::after{content:'';position:absolute;bottom:-150px;left:-100px;width:400px;height:400px;background:radial-gradient(circle,rgba(106,62,247,.06) 0%,transparent 70%);border-radius:50%}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.2fr 1fr;gap:60px;align-items:center}
.hero-tag{display:inline-block;background:var(--primary-light);color:var(--primary);padding:6px 16px;border-radius:20px;font-size:13px;font-weight:600;margin-bottom:20px}
.hero h1{font-size:48px;line-height:1.2;font-weight:800;margin-bottom:20px;letter-spacing:-1px}
.hero h1 span{background:linear-gradient(135deg,var(--primary),#6a3ef7);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero p.sub{font-size:18px;color:var(--gray);margin-bottom:32px;max-width:520px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.btn-primary{background:var(--primary);color:#fff;padding:14px 36px;border-radius:8px;font-size:16px;font-weight:600;border:none;cursor:pointer;transition:all .2s}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 24px rgba(26,109,255,.3)}
.btn-outline{background:transparent;color:var(--primary);padding:14px 36px;border-radius:8px;font-size:16px;font-weight:600;border:2px solid var(--primary);cursor:pointer;transition:all .2s}
.btn-outline:hover{background:var(--primary-light)}
.hero-visual{position:relative;display:flex;justify-content:center;align-items:center}
.hero-card{background:#fff;border-radius:16px;box-shadow:0 20px 60px rgba(26,109,255,.12);padding:32px;width:100%;max-width:380px}
.hero-card h3{font-size:16px;color:var(--gray);margin-bottom:20px;font-weight:500}
.hero-stat-row{display:flex;justify-content:space-around;text-align:center}
.hero-stat-row .num{font-size:32px;font-weight:800;color:var(--primary)}
.hero-stat-row .label{font-size:13px;color:var(--gray);margin-top:4px}

/* ===== Stats Bar ===== */
.stats-bar{background:#fff;padding:60px 0;border-bottom:1px solid var(--border)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;text-align:center}
.stat-item .num{font-size:44px;font-weight:800;color:var(--primary);line-height:1}
.stat-item .num small{font-size:22px;font-weight:700}
.stat-item .label{font-size:15px;color:var(--gray);margin-top:8px}

/* ===== Section Common ===== */
.section{padding:100px 0}
.section.gray{background:var(--light)}
.section-head{text-align:center;max-width:700px;margin:0 auto 60px}
.section-head .tag{display:inline-block;color:var(--primary);font-size:14px;font-weight:700;letter-spacing:2px;text-transform:uppercase;margin-bottom:12px}
.section-head h2{font-size:36px;font-weight:800;margin-bottom:16px;line-height:1.3}
.section-head p{font-size:16px;color:var(--gray)}

/* ===== About ===== */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.about-text h3{font-size:28px;font-weight:700;margin-bottom:20px;line-height:1.4}
.about-text p{font-size:16px;color:var(--gray);margin-bottom:16px;line-height:1.8}
.about-points{list-style:none;margin-top:24px}
.about-points li{padding:8px 0;font-size:15px;color:var(--dark);display:flex;align-items:center;gap:10px}
.about-points li::before{content:'✓';color:var(--primary);font-weight:700;width:22px;height:22px;background:var(--primary-light);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:13px;flex-shrink:0}
.about-visual{background:linear-gradient(135deg,#1a6dff,#6a3ef7);border-radius:20px;padding:50px;color:#fff;min-height:340px;display:flex;flex-direction:column;justify-content:center}
.about-visual h4{font-size:22px;margin-bottom:16px}
.about-visual p{font-size:15px;opacity:.9;line-height:1.8}
.about-visual .big-num{font-size:56px;font-weight:800;line-height:1;margin-bottom:8px}

/* ===== Services ===== */
.services-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.service-card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:40px;transition:all .3s;cursor:pointer}
.service-card:hover{border-color:var(--primary);box-shadow:0 12px 40px rgba(26,109,255,.1);transform:translateY(-4px)}
.service-num{font-size:14px;font-weight:700;color:var(--primary);margin-bottom:16px;letter-spacing:1px}
.service-icon{width:56px;height:56px;border-radius:12px;background:var(--primary-light);display:flex;align-items:center;justify-content:center;margin-bottom:20px;font-size:28px}
.service-card h3{font-size:20px;font-weight:700;margin-bottom:12px}
.service-card p{font-size:14px;color:var(--gray);line-height:1.8}

/* ===== Platforms ===== */
.platforms-row{display:flex;flex-wrap:wrap;justify-content:center;gap:20px}
.platform-item{background:#fff;border:1px solid var(--border);border-radius:12px;padding:18px 28px;display:flex;align-items:center;justify-content:center;min-height:70px;transition:all .3s;cursor:pointer}
.platform-item:hover{border-color:var(--primary);box-shadow:0 8px 24px rgba(26,109,255,.1);transform:translateY(-2px)}
.platform-item img{max-height:36px;max-width:140px;display:block;object-fit:contain}
.platform-text{font-size:15px;font-weight:600;color:var(--dark);white-space:nowrap}
.alipay-item{gap:8px}
.alipay-icon{width:32px;height:32px;background:#1677ff;color:#fff;border-radius:6px;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700}

/* ===== Industries ===== */
.industries-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.industry-card{background:#fff;border-radius:12px;padding:28px;text-align:center;border:1px solid var(--border);transition:all .3s;cursor:pointer}
.industry-card:hover{border-color:var(--primary);box-shadow:0 8px 24px rgba(26,109,255,.08)}
.industry-card .icon{font-size:36px;margin-bottom:12px}
.industry-card h4{font-size:16px;font-weight:600}
.industry-card p{font-size:13px;color:var(--gray);margin-top:6px}

/* ===== Advantages ===== */
.adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.adv-item{text-align:center;padding:30px 20px;border-radius:12px;transition:all .3s;cursor:pointer}
.adv-item:hover{background:#fff;box-shadow:0 8px 30px rgba(0,0,0,.06)}
.adv-item .icon{width:60px;height:60px;margin:0 auto 16px;background:linear-gradient(135deg,var(--primary),#6a3ef7);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:26px;color:#fff}
.adv-item h4{font-size:17px;font-weight:700;margin-bottom:8px}
.adv-item p{font-size:14px;color:var(--gray);line-height:1.6}

/* ===== Contact / CTA ===== */
.contact-section{background:linear-gradient(135deg,#0d47a1 0%,#1a6dff 100%);color:#fff;padding:80px 0}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.contact-info h2{font-size:36px;font-weight:800;margin-bottom:20px;line-height:1.3}
.contact-info p{font-size:16px;opacity:.9;margin-bottom:30px;line-height:1.8}
.contact-detail{display:flex;flex-direction:column;gap:16px}
.contact-detail .row{display:flex;align-items:center;gap:12px;font-size:16px}
.contact-detail .row .icon{width:40px;height:40px;background:rgba(255,255,255,.15);border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:18px}
.wechat-qr-card{margin-top:16px;background:#fff;border-radius:12px;padding:16px;text-align:center;display:inline-block;width:fit-content}
.wechat-qr-card img{width:140px;height:140px;display:block;margin:0 auto}
.wechat-qr-card p{font-size:13px;color:var(--gray);margin-top:8px}
.contact-form{background:#fff;border-radius:16px;padding:40px;color:var(--dark)}
.contact-form h3{font-size:22px;font-weight:700;margin-bottom:24px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:14px;font-weight:600;margin-bottom:6px;color:var(--dark)}
.form-group input,.form-group select{width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:8px;font-size:15px;outline:none;transition:border .2s}
.form-group input:focus,.form-group select:focus{border-color:var(--primary)}
.form-submit{width:100%;background:var(--primary);color:#fff;padding:14px;border-radius:8px;font-size:16px;font-weight:600;border:none;cursor:pointer;transition:all .2s}
.form-submit:hover{background:var(--primary-dark)}
.form-tip{font-size:12px;color:var(--gray);text-align:center;margin-top:12px}

/* ===== Footer ===== */
.footer{background:#0f172a;color:#94a3b8;padding:50px 0 30px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand .logo{color:#fff;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8}
.footer h5{color:#fff;font-size:15px;margin-bottom:16px}
.footer ul{list-style:none}
.footer ul li{padding:4px 0;font-size:14px}
.footer-bottom{border-top:1px solid #1e293b;padding-top:24px;text-align:center;font-size:13px}

/* ===== Floating Buttons ===== */
.float-bar{position:fixed;right:20px;top:50%;transform:translateY(-50%);z-index:999;display:flex;flex-direction:column;gap:0;background:#fff;border-radius:12px;box-shadow:0 4px 24px rgba(0,0,0,.12);overflow:hidden}
.float-btn{display:flex;flex-direction:column;align-items:center;padding:14px 16px;cursor:pointer;border:none;background:none;font-size:12px;color:var(--dark);transition:all .2s;border-bottom:1px solid var(--border)}
.float-btn:last-child{border-bottom:none}
.float-btn:hover{background:var(--primary-light);color:var(--primary)}
.float-btn .icon{font-size:22px;margin-bottom:4px}
.float-btn.highlight{background:var(--primary);color:#fff}
.float-btn.highlight:hover{background:var(--primary-dark)}

/* ===== Section Clickable ===== */
.clickable-section{cursor:pointer;transition:background .2s}
.clickable-section:hover{background:#f0f6ff}

/* ===== Responsive ===== */
@media(max-width:968px){
  .hero{padding:120px 0 60px}
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero h1{font-size:32px}
  .hero p.sub{font-size:16px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:24px}
  .stat-item .num{font-size:32px}
  .about-grid{grid-template-columns:1fr;gap:40px}
  .services-grid{grid-template-columns:1fr}
  .industries-grid{grid-template-columns:repeat(2,1fr)}
  .adv-grid{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .section{padding:60px 0}
  .section-head h2{font-size:26px}
  .nav-links{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;padding:20px 24px;gap:16px;border-bottom:1px solid var(--border);box-shadow:0 8px 24px rgba(0,0,0,.08)}
  .nav-links.open{display:flex}
  .hamburger{display:flex}
  .nav-cta{display:none}
  .float-bar{right:10px}
  .float-btn{padding:10px 12px;font-size:11px}
  .float-btn .icon{font-size:18px}
}
@media(max-width:568px){
  .hero h1{font-size:26px}
  .hero-visual{display:none}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .industries-grid{grid-template-columns:1fr}
  .adv-grid{grid-template-columns:1fr}
  .container{padding:0 16px}
}