*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#2775ff;
  --primary-dark:#1d5ce0;
  --primary-light:#639bff;
  --primary-gradient:linear-gradient(135deg,#2775ff 0%,#1a3dad 100%);
  --primary-gradient-light:linear-gradient(135deg,#2775ff 0%,#639bff 100%);
  --secondary:#2fbf88;
  --secondary-dark:#28a870;
  --secondary-light:#e8f8f2;
  --accent:#f59e0b;
  --accent-dark:#d97706;
  --accent-light:#fffbeb;
  --bg-white:#ffffff;
  --bg-light:#f5f7fa;
  --bg-lighter:#fafbfd;
  --text-primary:#1a1a2e;
  --text-secondary:#4a5568;
  --text-muted:#8896a6;
  --border-color:#e2e8f0;
  --border-light:#edf2f7;
  --shadow-sm:0 2px 8px rgba(39,117,255,0.08);
  --shadow-md:0 8px 32px rgba(39,117,255,0.12);
  --shadow-lg:0 20px 60px rgba(39,117,255,0.16);
  --shadow-xl:0 32px 80px rgba(39,117,255,0.2);
  --radius-sm:8px;
  --radius-md:12px;
  --radius-lg:20px;
  --radius-xl:28px;
  --transition:all .3s ease;
}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;color:var(--text-primary);background:var(--bg-white);overflow-x:hidden;line-height:1.7}
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:var(--bg-light)}
::-webkit-scrollbar-thumb{background:var(--primary);border-radius:3px}

.container{max-width:1200px;margin:0 auto;padding:0 24px}

.btn{display:inline-flex;align-items:center;gap:6px;padding:10px 22px;border-radius:var(--radius-sm);font-size:14px;font-weight:500;cursor:pointer;transition:var(--transition);text-decoration:none;border:none;font-family:inherit;white-space:nowrap}
.btn-primary{background:var(--primary-gradient-light);color:#fff;box-shadow:0 4px 16px rgba(39,117,255,0.3)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 8px 24px rgba(39,117,255,0.4)}
.btn-accent{background:linear-gradient(135deg,var(--accent),#fbbf24);color:#fff;box-shadow:0 4px 16px rgba(245,158,11,0.3)}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(245,158,11,0.45)}
.btn-outline{background:transparent;color:var(--primary);border:2px solid var(--primary)}
.btn-outline:hover{background:rgba(39,117,255,0.05)}
.btn-white{background:#fff;color:var(--primary);font-weight:700}
.btn-white:hover{background:#f0f4ff;transform:translateY(-2px)}
.btn-lg{padding:14px 32px;font-size:16px;border-radius:var(--radius-md)}
.btn-ghost{background:transparent;color:var(--text-primary);border:1.5px solid var(--border-color)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}

section{padding:100px 0}
.section-tag{display:inline-block;background:rgba(39,117,255,0.1);color:var(--primary);font-size:12px;font-weight:600;padding:5px 14px;border-radius:100px;margin-bottom:16px;letter-spacing:.5px}
.section-title{font-size:clamp(26px,3.5vw,40px);font-weight:700;color:var(--text-primary);line-height:1.25;margin-bottom:14px}
.section-title span{color:var(--primary)}
.section-sub{font-size:16px;color:var(--text-secondary);max-width:560px;line-height:1.7}
.section-head{margin-bottom:60px}
.section-head.center{text-align:center}
.section-head.center .section-sub{margin:0 auto}

.fade-in{opacity:0;transform:translateY(30px);transition:opacity .6s ease,transform .6s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}
.fade-in.d1{transition-delay:.1s}
.fade-in.d2{transition-delay:.2s}
.fade-in.d3{transition-delay:.3s}
.fade-in.d4{transition-delay:.4s}

.card{background:var(--bg-white);border:1.5px solid var(--border-color);border-radius:var(--radius-lg);transition:var(--transition)}
.card:hover{border-color:var(--primary);box-shadow:var(--shadow-lg);transform:translateY(-4px)}

.nav{position:fixed;top:0;left:0;right:0;z-index:1000;padding:16px 0;transition:var(--transition)}
.nav .logo-text{font-size:18px;font-weight:700;color:#fff}
.nav .logo-text span{color:var(--primary-light)}
.nav .nav-links a{color:#b8c0d0}
.nav .btn-ghost{color:#b8c0d0;border-color:rgba(255,255,255,0.2)}
.nav .btn-ghost:hover{color:#fff;border-color:rgba(255,255,255,0.5)}
.nav .ham span{background:#fff}
.nav.scrolled{background:rgba(255,255,255,0.96);backdrop-filter:blur(12px);box-shadow:var(--shadow-sm);padding:10px 0}
.nav.scrolled .logo-text{color:var(--text-primary)}
.nav.scrolled .logo-text span{color:var(--primary)}
.nav.scrolled .nav-links a{color:var(--text-secondary)}
.nav.scrolled .btn-ghost{color:var(--text-primary);border-color:var(--border-color)}
.nav.scrolled .btn-ghost:hover{color:var(--primary);border-color:var(--primary)}
.nav.scrolled .ham span{background:var(--text-primary)}
.nav-inner{max-width:1200px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none}
.logo-icon{width:38px;height:38px;background:var(--primary-gradient);border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:14px;font-weight:700}
.nav-links{display:flex;align-items:center;gap:32px;list-style:none}
.nav-links a{text-decoration:none;font-size:14px;font-weight:500;transition:color .2s}
.nav-links a:hover{color:var(--primary)}
.nav-cta{display:flex;gap:10px;align-items:center}
.ham{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:4px}
.ham span{display:block;width:22px;height:2px;border-radius:2px;transition:var(--transition)}
.mobile-menu{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:#fff;z-index:999;flex-direction:column;align-items:center;justify-content:center;gap:32px}
.mobile-menu.open{display:flex}
.mobile-menu a{font-size:20px;color:var(--text-primary);text-decoration:none;font-weight:500}
.mobile-close{position:absolute;top:24px;right:24px;font-size:28px;cursor:pointer;color:var(--text-secondary);background:none;border:none;font-family:inherit}

.notification{position:fixed;top:24px;right:24px;z-index:2000;background:#fff;border-radius:var(--radius-md);padding:20px 28px;box-shadow:var(--shadow-xl);display:flex;align-items:center;gap:14px;transform:translateX(calc(100% + 32px));transition:transform .4s cubic-bezier(.4,0,.2,1);max-width:400px}
.notification.show{transform:translateX(0)}
.notif-icon{width:40px;height:40px;border-radius:50%;background:var(--secondary-light);display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0}
.notif-content{flex:1}
.notif-title{font-size:14px;font-weight:700;color:var(--text-primary)}
.notif-sub{font-size:13px;color:var(--text-secondary);margin-top:2px}

.footer-dark{background:#1a1a2e;color:#8896a6;padding:64px 0 32px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:48px}
.footer-brand .logo{margin-bottom:14px;display:inline-flex}
.footer-brand .logo-text{color:#c8d0e0}
.footer-brand .logo-text span{color:var(--primary-light)}
.footer-brand p{font-size:14px;line-height:1.7;color:#6a7a90;max-width:280px;margin-bottom:20px}
.footer-contact{font-size:13px;color:#6a7a90;display:flex;flex-direction:column;gap:8px}
.footer-dark h4{font-size:14px;font-weight:700;color:#c8d0e0;margin-bottom:16px}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:8px}
.footer-col ul a{font-size:13px;color:#6a7a90;text-decoration:none;transition:color .2s}
.footer-col ul a:hover{color:var(--primary-light)}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.06);padding-top:24px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px}
.footer-bottom p,.footer-icp a{font-size:12px;color:#4a5a6a}

.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.5);z-index:3000;display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity .3s ease}
.modal-overlay.show{opacity:1;pointer-events:auto}
.modal-box{background:#fff;border-radius:var(--radius-xl);padding:40px 36px;text-align:center;max-width:420px;width:90%;box-shadow:0 32px 80px rgba(0,0,0,0.3);transform:translateY(20px);transition:transform .3s ease}
.modal-overlay.show .modal-box{transform:translateY(0)}
.modal-icon{font-size:48px;margin-bottom:16px}
.modal-box h2{font-size:22px;font-weight:700;color:var(--text-primary);margin-bottom:12px}
.modal-box .modal-desc{font-size:15px;color:var(--text-secondary);margin-bottom:24px;line-height:1.6}
.modal-phone{display:inline-block;font-size:32px;font-weight:700;color:var(--primary);letter-spacing:1px;text-decoration:none;margin-bottom:24px;transition:color .2s}
.modal-phone:hover{color:var(--primary-dark)}
.modal-close-btn{display:inline-block;padding:10px 36px;background:var(--primary-gradient-light);color:#fff;border:none;border-radius:var(--radius-sm);font-size:15px;font-weight:600;cursor:pointer;font-family:inherit;transition:var(--transition)}
.modal-close-btn:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(39,117,255,0.4)}

.page-hero{background:linear-gradient(160deg,#1a1a2e 0%,#1b2d5e 50%,#1a1a2e 100%);padding:140px 0 80px;text-align:center;position:relative;overflow:hidden}
.page-hero::before{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(39,117,255,0.04) 1px,transparent 1px),linear-gradient(90deg,rgba(39,117,255,0.04) 1px,transparent 1px);background-size:60px 60px;pointer-events:none}
.page-hero-orb{position:absolute;width:500px;height:500px;border-radius:50%;background:radial-gradient(circle,rgba(39,117,255,0.12) 0%,transparent 70%);top:-100px;right:-100px;pointer-events:none}
.page-hero h1{font-size:clamp(28px,4vw,46px);font-weight:700;color:#fff;margin-bottom:16px;position:relative;z-index:1}
.page-hero p{font-size:17px;color:#8a90b8;max-width:560px;margin:0 auto;position:relative;z-index:1}

@media(max-width:900px){
  .nav-links,.nav-cta{display:none}
  .ham{display:flex}
  section{padding:60px 0}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:600px){
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;text-align:center}
}