/* ====== Reset & Base ====== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;-webkit-font-smoothing:antialiased}
:root{
  --primary:#FF6B40;
  --primary-dark:#E85D35;
  --primary-light:#FFF0EA;
  --blue:#1a56db;
  --blue-dark:#0f3a9e;
  --blue-light:#ebf5ff;
  --dark:#1a1a2e;
  --darker:#0f0f23;
  --gray:#6b7280;
  --gray-light:#f3f4f6;
  --white:#fff;
  --gradient1:linear-gradient(135deg,#FF6B40 0%,#FF9B6A 100%);
  --gradient2:linear-gradient(135deg,#1a56db 0%,#3b82f6 100%);
  --gradient3:linear-gradient(135deg,#0f0f23 0%,#1a1a2e 50%,#16213e 100%);
  --shadow:0 4px 20px rgba(0,0,0,.08);
  --shadow-lg:0 10px 40px rgba(0,0,0,.12);
  --radius:12px;
  --radius-sm:8px;
  --max-w:1200px
}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans SC",sans-serif;color:#333;line-height:1.6;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.container{width:100%;max-width:var(--max-w);margin:0 auto;padding:0 20px}
.text-center{text-align:center}
.mt-3{margin-top:40px}

/* ====== Buttons ====== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border-radius:50px;font-weight:600;cursor:pointer;transition:all .3s ease;border:2px solid transparent;text-align:center}
.btn-sm{padding:8px 20px;font-size:14px}
.btn-lg{padding:14px 32px;font-size:16px}
.btn-primary{background:var(--gradient1);color:var(--white);border-color:var(--primary)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(255, 107, 64,.35)}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{background:var(--primary);color:var(--white)}
.btn-block{display:flex;width:100%}
.btn-dark{background:var(--dark);color:var(--white);border-color:var(--dark)}
.btn-dark:hover{background:#2d2d4a}
.pulse-anim{animation:pulse 2s ease-in-out infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(255, 107, 64,.4)}50%{box-shadow:0 0 0 12px rgba(255, 107, 64,0)}}

/* ====== Header ====== */
.header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-bottom:1px solid rgba(0,0,0,.06);transition:all .3s ease}
.header.scrolled{box-shadow:0 2px 20px rgba(0,0,0,.1)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700}
.logo-icon{font-size:28px}
.logo-text{font-size:18px;color:var(--dark)}
.logo-sub{font-size:13px;color:var(--primary);font-weight:500;margin-left:4px}
.nav{display:flex;gap:4px}
.nav-link{padding:8px 16px;font-size:14px;font-weight:500;color:#555;border-radius:var(--radius-sm);transition:all .25s ease}
.nav-link:hover,.nav-link.active{color:var(--primary);background:var(--primary-light)}
.header-actions{display:flex;gap:8px}
.mobile-toggle{display:none;background:none;border:none;font-size:28px;cursor:pointer;color:var(--dark);padding:4px}

/* ====== Hero ====== */
.hero{position:relative;padding:140px 0 80px;background:var(--gradient3);overflow:hidden;min-height:100vh;display:flex;align-items:center}
.hero-bg{position:absolute;top:0;left:0;right:0;bottom:0;background:radial-gradient(circle at 30% 50%,rgba(255, 107, 64,.15) 0%,transparent 50%),radial-gradient(circle at 70% 30%,rgba(59,130,246,.1) 0%,transparent 50%)}
.hero-inner{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;position:relative;z-index:1}
.hero-badge{display:inline-block;background:rgba(255, 107, 64,.15);color:#FF9B6A;padding:8px 18px;border-radius:50px;font-size:14px;font-weight:600;margin-bottom:24px;border:1px solid rgba(255, 107, 64,.2)}
.hero-title{font-size:48px;line-height:1.2;color:var(--white);margin-bottom:20px;font-weight:800}
.gradient-text{background:var(--gradient1);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-subtitle{font-size:17px;color:rgba(255,255,255,.75);line-height:1.7;margin-bottom:32px}
.hero-subtitle strong{color:var(--white)}
.hero-buttons{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:28px}
.hero-trust{display:flex;gap:20px;flex-wrap:wrap;font-size:14px;color:rgba(255,255,255,.6)}
.hero-trust span{display:flex;align-items:center;gap:6px}
.hero-visual{display:flex;flex-direction:column;gap:16px}
.hero-card{background:rgba(255,255,255,.06);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);padding:24px;transition:all .3s ease}
.hero-card:hover{background:rgba(255,255,255,.1);transform:translateX(8px)}
.hero-card-icon{font-size:36px;margin-bottom:8px}
.hero-card h3{color:var(--white);font-size:18px;margin-bottom:4px}
.hero-card p{color:rgba(255,255,255,.6);font-size:14px}
.hero-card-2{margin-left:20px}
.hero-card-3{margin-left:40px}

/* ====== Stats Bar ====== */
.stats-bar{background:var(--white);padding:40px 0;border-bottom:1px solid var(--gray-light)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-item{text-align:center}
.stat-num{font-size:42px;font-weight:800;background:var(--gradient1);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.stat-unit{font-size:18px;font-weight:600;color:var(--primary);margin-left:2px}
.stat-label{display:block;font-size:14px;color:var(--gray);margin-top:4px}

/* ====== Sections ====== */
.section{padding:80px 0}
.section-dark{background:var(--gradient3);color:var(--white)}
.section-blue{background:var(--gradient2);color:var(--white)}
.section-white{background:var(--white)}
.section-what{background:var(--white)}
.section-header{text-align:center;margin-bottom:50px;max-width:700px;margin-left:auto;margin-right:auto}
.section-tag{display:inline-block;background:var(--primary-light);color:var(--primary);padding:4px 14px;border-radius:50px;font-size:12px;font-weight:600;letter-spacing:1px;margin-bottom:12px}
.section-tag-light{background:rgba(255,255,255,.1);color:rgba(255,255,255,.9)}
.section-title{font-size:34px;font-weight:800;margin-bottom:14px;line-height:1.3}
.section-desc{font-size:16px;color:var(--gray);line-height:1.7}
.section-dark .section-desc,.section-blue .section-desc{color:rgba(255,255,255,.65)}

/* ====== Grids ====== */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}

/* ====== Feature Card ====== */
.feature-card{background:var(--white);border:1px solid var(--gray-light);border-radius:var(--radius);padding:32px 24px;text-align:center;transition:all .3s ease}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.feature-icon{font-size:48px;margin-bottom:16px}
.feature-card h3{font-size:18px;color:var(--dark);margin-bottom:10px}
.feature-card p{font-size:14px;color:var(--gray);line-height:1.7}

/* ====== Product Card ====== */
.product-card{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);padding:30px 24px;text-align:center;transition:all .3s ease;position:relative}
.product-card:hover{background:rgba(255,255,255,.12);transform:translateY(-4px)}
.product-badge{position:absolute;top:-10px;right:16px;background:var(--gradient1);padding:4px 14px;border-radius:50px;font-size:12px;font-weight:700;color:#fff}
.product-icon{font-size:44px;margin-bottom:12px}
.product-card h3{font-size:20px;margin-bottom:6px}
.product-desc{font-size:14px;color:rgba(255,255,255,.65);margin-bottom:16px}
.product-features{list-style:none;text-align:left;margin-bottom:20px;font-size:14px;line-height:2.2;color:rgba(255,255,255,.8)}
.product-card .btn-outline{color:rgba(255,255,255,.9);border-color:rgba(255,255,255,.4)}
.product-card .btn-outline:hover{background:var(--white);color:var(--dark);border-color:var(--white)}

/* ====== Solution Card ====== */
.solution-card{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);padding:30px;transition:all .3s ease}
.solution-card:hover{background:rgba(255,255,255,.12);transform:translateY(-4px)}
.solution-number{font-size:36px;font-weight:800;background:var(--gradient1);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:8px}
.solution-card h3{font-size:20px;margin-bottom:10px}
.solution-card p{font-size:14px;color:rgba(255,255,255,.7);line-height:1.7;margin-bottom:14px}
.solution-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.solution-tags span{background:rgba(255,255,255,.1);padding:4px 12px;border-radius:50px;font-size:12px;color:rgba(255,255,255,.75)}
.link-arrow{display:inline-flex;align-items:center;font-weight:600;font-size:14px;color:var(--primary);transition:gap .3s ease;gap:4px}
.link-arrow:hover{gap:8px}
.section-dark .link-arrow,.section-blue .link-arrow{color:#FF9B6A}

/* ====== Case Card ====== */
.case-card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:all .3s ease;border:1px solid var(--gray-light)}
.case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.case-img{height:180px;display:flex;align-items:center;justify-content:center}
.case-placeholder{font-size:56px}
.case-body{padding:24px}
.case-tag{display:inline-block;background:var(--primary-light);color:var(--primary);padding:2px 12px;border-radius:50px;font-size:12px;font-weight:600;margin-bottom:10px}
.case-body h3{font-size:17px;color:var(--dark);margin-bottom:8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.case-body p{font-size:14px;color:var(--gray);line-height:1.7;margin-bottom:14px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}

/* ====== About ====== */
.about-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:50px;align-items:start}
.about-content h3{font-size:24px;margin-bottom:16px}
.about-content p{font-size:15px;color:rgba(255,255,255,.75);line-height:1.8;margin-bottom:14px}
.about-check-list{display:flex;flex-direction:column;gap:10px;margin:20px 0;font-size:15px;color:rgba(255,255,255,.85)}
.about-stats{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.about-stat-card{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);padding:24px;text-align:center}
.about-stat-num{display:block;font-size:32px;font-weight:800;background:var(--gradient1);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.about-stat-label{font-size:14px;color:rgba(255,255,255,.65);margin-top:4px}

/* ====== Industry ====== */
.industry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.industry-item{background:var(--gray-light);border-radius:var(--radius);padding:28px 20px;text-align:center;transition:all .3s ease;cursor:default}
.industry-item:hover{background:var(--primary-light);transform:translateY(-4px)}
.industry-icon{font-size:40px;margin-bottom:10px}
.industry-item h3{font-size:17px;color:var(--dark);margin-bottom:6px}
.industry-item p{font-size:13px;color:var(--gray)}

/* ====== Service Card ====== */
.service-card{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);padding:32px 24px;text-align:center;transition:all .3s ease}
.service-card:hover{background:rgba(255,255,255,.12);transform:translateY(-4px)}
.service-icon{font-size:42px;margin-bottom:14px}
.service-card h3{font-size:18px;margin-bottom:8px}
.service-card p{font-size:14px;color:rgba(255,255,255,.7);line-height:1.7}

/* ====== Articles ====== */
.article-list{max-width:800px;margin:0 auto}
.article-empty{text-align:center;padding:60px 20px;color:var(--gray);font-size:16px}

/* ====== Contact ====== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.contact-info{display:flex;flex-direction:column;gap:24px}
.contact-item{display:flex;gap:16px;align-items:flex-start}
.contact-icon{font-size:28px;flex-shrink:0;margin-top:2px}
.contact-item h4{font-size:16px;margin-bottom:2px;color:rgba(255,255,255,.9)}
.contact-item p{font-size:14px;color:rgba(255,255,255,.65)}
.contact-link{font-size:20px;font-weight:700;color:#FF9B6A;transition:color .3s}
.contact-link:hover{color:#FFB088}
.contact-tip{font-size:12px!important;color:rgba(255,255,255,.45)!important;margin-top:2px!important}
.wechat-qr-placeholder{width:140px;height:140px;background:rgba(255,255,255,.08);border:2px dashed rgba(255,255,255,.2);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;margin-top:8px;color:rgba(255,255,255,.4);font-size:13px}
.cta-card{background:var(--white);border-radius:var(--radius);padding:32px;color:#333}
.cta-card h3{font-size:22px;margin-bottom:10px;color:var(--dark)}
.cta-card>p{font-size:14px;color:var(--gray);margin-bottom:20px;line-height:1.7}
.cta-card .btn-primary{background:var(--gradient1);border-color:var(--primary);color:#fff}
.cta-card .btn-outline{color:var(--primary);border-color:var(--primary)}
.divider{display:flex;align-items:center;margin:16px 0;gap:12px;color:var(--gray);font-size:13px}
.divider::before,.divider::after{content:"";flex:1;height:1px;background:var(--gray-light)}
.qr-tip{text-align:center;font-size:14px;color:var(--gray);margin-bottom:12px!important}
.qr-code-box{text-align:center;margin-bottom:16px}
.cta-reminder{text-align:center;font-size:13px;color:var(--gray);margin-top:12px!important}
.cta-reminder a{color:var(--primary);font-weight:600}

/* ====== Footer ====== */
.footer{background:var(--darker);color:rgba(255,255,255,.7);padding:60px 0 30px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.3fr;gap:40px;margin-bottom:40px}
.footer-col h4{color:var(--white);font-size:16px;margin-bottom:16px}
.footer-col p{font-size:14px;line-height:1.8}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.6);padding:4px 0;transition:color .3s}
.footer-col a:hover{color:#FF9B6A}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:24px;text-align:center;font-size:13px}

/* ====== Back to Top ====== */
.back-to-top{position:fixed;bottom:90px;right:20px;width:44px;height:44px;border-radius:50%;background:var(--gradient1);color:#fff;border:none;font-size:20px;cursor:pointer;box-shadow:0 4px 15px rgba(255, 107, 64,.4);transition:all .3s;opacity:0;visibility:hidden;z-index:999}
.back-to-top.show{opacity:1;visibility:visible}
.back-to-top:hover{transform:translateY(-3px)}

/* ====== Float Bar ====== */
.float-bar{position:fixed;bottom:24px;right:20px;display:flex;flex-direction:column;gap:8px;z-index:998}
.float-item{width:48px;height:48px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:22px;box-shadow:0 4px 15px rgba(0,0,0,.15);transition:all .3s ease;cursor:pointer;color:#fff}
.float-item:hover{transform:scale(1.1)}
.float-phone{background:var(--gradient1)}
.float-trial{background:var(--gradient2)}
.float-contact{background:#10b981}

/* ====== Responsive ====== */
@media(max-width:992px){
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-title{font-size:36px}
  .hero-visual{flex-direction:row;flex-wrap:wrap}
  .hero-card{flex:1;min-width:200px;margin-left:0!important}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .about-grid{grid-template-columns:1fr;gap:30px}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .industry-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:16px}
}
@media(max-width:768px){
  .mobile-toggle{display:block}
  .nav{position:fixed;top:68px;left:0;right:0;background:var(--white);flex-direction:column;padding:16px;border-bottom:1px solid var(--gray-light);display:none;box-shadow:var(--shadow-lg);max-height:calc(100vh-68px);overflow-y:auto}
  .nav.open{display:flex}
  .header-actions{display:none}
  .hero{padding:100px 0 50px}
  .hero-title{font-size:28px}
  .hero-subtitle{font-size:15px}
  .hero-buttons{flex-direction:column}
  .hero-buttons .btn{width:100%}
  .section-title{font-size:26px}
  .grid-4,.grid-3,.grid-2{grid-template-columns:1fr}
  .industry-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .about-stats{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .stat-num{font-size:32px}
  .back-to-top{bottom:80px}
  .float-item{width:42px;height:42px;font-size:18px}
}
@media(max-width:480px){
  .hero-title{font-size:24px}
  .section{padding:50px 0}
  .section-title{font-size:22px}
  .hero-card{padding:16px}
}

/* ====== 留资表单 (Lead Form) ====== */
.lead-form{background:var(--white);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);margin-bottom:24px}
.lead-form h3{font-size:20px;margin-bottom:6px;color:var(--dark)}
.lead-form .lead-sub{font-size:13px;color:var(--gray);margin-bottom:18px}
.form-group{margin-bottom:14px}
.form-group label{display:block;font-size:13px;font-weight:600;color:var(--dark);margin-bottom:6px}
.form-group label .req{color:#e74c3c}
.form-control{width:100%;padding:11px 14px;border:1px solid #d1d5db;border-radius:8px;font-size:14px;transition:border-color .2s,box-shadow .2s}
.form-control:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(255,107,64,.12)}
textarea.form-control{resize:vertical;min-height:64px}
.lead-form .btn{width:100%;margin-top:4px}
.lead-tip{font-size:12px;color:#9ca3af;margin-top:10px;text-align:center}
.lead-success{display:none;text-align:center;padding:16px 8px}
.lead-success .ok-icon{font-size:40px;display:block;margin-bottom:8px}
.lead-success p{color:var(--dark);font-weight:600;margin-bottom:4px}
.lead-success small{color:var(--gray)}