/* krwetatnt.net 设计系统 - 蓝橙竞速主题 */
:root {
  --primary: #1a56db;
  --primary-dark: #1e40af;
  --primary-light: #3b82f6;
  --secondary: #2563eb;
  --accent: #f97316;
  --accent-dark: #ea580c;
  --danger: #dc2626;
  --dark: #1e293b;
  --bg: #f8fafc;
  --text: #1e293b;
  --muted: #64748b;
  --border: #e2e8f0;
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
}
*{box-sizing:border-box;margin:0;padding:0;}
body{font-family:'Inter','PingFang SC','Microsoft YaHei',sans-serif;background:var(--bg);color:var(--text);min-height:100vh;line-height:1.6;}
a{color:var(--primary);text-decoration:none;transition:color .2s;}
a:hover{color:var(--accent);}
img{max-width:100%;height:auto;border-radius:8px;}
.container{max-width:1100px;margin:0 auto;padding:0 20px;}

/* Header */
.header{position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid var(--border);box-shadow:0 1px 3px rgba(0,0,0,0.04);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px;max-width:1100px;margin:0 auto;padding:0 20px;}
.logo{display:flex;align-items:center;gap:8px;font-size:20px;font-weight:800;color:var(--dark)!important;}
.logo-icon{color:var(--primary);font-size:24px;}
.mobile-toggle{display:none;background:none;border:1px solid var(--border);color:var(--text);font-size:22px;width:44px;height:44px;border-radius:8px;cursor:pointer;}
.nav-links{display:flex;gap:2px;}
.nav-links a{padding:10px 14px;font-size:14px;font-weight:500;color:#475569;border-radius:8px;transition:all .2s;white-space:nowrap;}
.nav-links a:hover,.nav-links a.active{background:#eef2ff;color:var(--primary);}

/* Hero */
.page-hero{padding:60px 0 80px;background:linear-gradient(135deg,#1a56db 0%,#3b82f6 100%);color:#fff;}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;}
.hero-label{font-size:12px;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:#fcd34d;margin-bottom:4px;}
.hero-title{font-size:clamp(26px,4.2vw,44px);font-weight:900;margin:10px 0 16px;line-height:1.2;}
.hero-desc{font-size:15px;opacity:0.9;margin-bottom:24px;line-height:1.7;}
.hero-btn-group{display:flex;gap:12px;flex-wrap:wrap;}
.hero-img img{border-radius:12px;box-shadow:0 12px 40px rgba(0,0,0,0.15);}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:12px 28px;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;transition:all .3s;border:none;text-decoration:none!important;min-height:44px;}
.btn-primary{background:var(--primary);color:#fff!important;}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);}
.btn-accent{background:var(--accent);color:#fff!important;}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-1px);}
.btn-outline{background:transparent;border:2px solid rgba(255,255,255,0.3);color:#fff!important;}
.btn-outline:hover{background:rgba(255,255,255,0.1);border-color:#fff;}
.btn-sm{padding:8px 18px;font-size:12px;min-height:36px;}
.btn-ghost{background:#eef2ff;color:var(--primary)!important;}
.btn-ghost:hover{background:#dbeafe;}

/* Sections */
.section{padding:60px 0;}
.section-alt{background:#f1f5f9;}
.section-header{text-align:center;margin-bottom:36px;}
.section-label{display:inline-block;font-size:11px;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--primary);margin-bottom:6px;}
.section-title{font-size:clamp(22px,3vw,34px);font-weight:800;color:var(--dark);}
.section-desc{color:var(--muted);font-size:14px;max-width:600px;margin:8px auto 0;}

/* Breadcrumb */
.breadcrumb{display:flex;gap:6px;align-items:center;font-size:12px;opacity:0.8;margin-bottom:20px;}
.breadcrumb a{color:rgba(255,255,255,0.7);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .sep{color:rgba(255,255,255,0.4);}

/* Cards */
.card{background:#fff;border:1px solid var(--border);border-radius:12px;padding:24px;transition:all .3s;box-shadow:0 1px 3px rgba(0,0,0,0.04);}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow);}
.card p{font-size:13px;color:var(--muted);line-height:1.6;}

/* Grids */
.g2{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.g3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.g4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}

/* Stats */
.stats-section{padding:50px 0;background:linear-gradient(135deg,#eef2ff,#f8fafc);border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.stats-grid{display:grid;gap:24px;text-align:center;}
.stats-grid .stat-number{font-size:clamp(28px,4vw,42px);font-weight:900;color:var(--primary);display:block;line-height:1.2;font-variant-numeric:tabular-nums;}
.stats-grid .stat-label{font-size:13px;color:var(--muted);margin-top:4px;}

/* FAQ */
.faq-item{border:1px solid var(--border);border-radius:8px;margin-bottom:10px;overflow:hidden;background:#fff;}
.faq-question{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;cursor:pointer;font-size:14px;font-weight:600;transition:background .2s;}
.faq-question:hover{background:#f8fafc;}
.faq-question i{transition:transform .3s;font-size:12px;color:var(--muted);}
.faq-item.active .faq-question i{transform:rotate(180deg);}
.faq-answer{padding:0 20px;max-height:0;overflow:hidden;transition:all .3s;}
.faq-item.active .faq-answer{max-height:300px;padding:0 20px 16px;}
.faq-answer p{font-size:13px;color:var(--muted);line-height:1.7;}

/* Badges */
.badge{display:inline-block;padding:3px 10px;border-radius:20px;font-size:11px;font-weight:600;}
.badge-blue{background:#dbeafe;color:var(--primary);}
.badge-orange{background:#fff7ed;color:var(--accent);}
.badge-green{background:#d1fae5;color:#059669;}
.badge-red{background:#fef2f2;color:#dc2626;}

/* Step */
.step-circle{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:16px;margin:0 auto 8px;}

/* Timeline */
.timeline{display:flex;flex-direction:column;gap:10px;}
.timeline-item{display:flex;gap:14px;align-items:flex-start;padding:16px;background:#fff;border:1px solid var(--border);border-radius:10px;}
.timeline-dot{width:10px;height:10px;border-radius:50%;background:var(--primary);margin-top:6px;flex-shrink:0;}

/* Footer */
.footer{padding:60px 0 30px;background:var(--dark);color:#94a3b8;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:30px;margin-bottom:30px;}
.footer-brand .logo{color:#fff!important;font-size:18px;margin-bottom:8px;display:inline-flex;}
.footer-brand .logo-icon{color:var(--primary);}
.footer-brand p{font-size:13px;color:#94a3b8;margin-top:6px;}
.footer-col h4{font-size:13px;font-weight:700;color:#fff;margin-bottom:12px;letter-spacing:0.5px;}
.footer-col a{display:block;font-size:13px;color:#94a3b8;padding:4px 0;transition:color .2s;}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:20px;border-top:1px solid #334155;font-size:12px;}
.footer-links{display:flex;gap:16px;}
.footer-links a{color:#94a3b8;}
.footer-links a:hover{color:var(--accent);}

/* CTA Banner */
.cta-banner{background:linear-gradient(135deg,var(--primary),var(--primary-dark));text-align:center;padding:60px 20px;color:#fff;}
.cta-banner h2{font-size:clamp(24px,3.5vw,38px);font-weight:900;color:#fff;margin-bottom:10px;}
.cta-banner p{color:rgba(255,255,255,0.85);font-size:15px;margin-bottom:20px;}
.cta-banner .btn-outline{border-color:rgba(255,255,255,0.3);}
.cta-banner .btn-outline:hover{border-color:#fff;}

/* Contact Card */
.contact-card{max-width:480px;margin:0 auto;text-align:center;padding:36px 24px;border:2px solid var(--border);border-radius:12px;background:#fff;}
.contact-card i{font-size:40px;color:var(--primary);margin-bottom:12px;}
.contact-card h3{font-size:18px;margin-bottom:6px;}
.contact-card p{font-size:14px;color:var(--muted);}

/* Responsive */
@media(max-width:768px){
  .mobile-toggle{display:flex;}
  .nav-links{display:none;position:fixed;top:64px;left:0;right:0;padding:16px;background:#fff;flex-direction:column;gap:4px;border-bottom:1px solid var(--border);z-index:99;box-shadow:0 4px 12px rgba(0,0,0,0.08);}
  .nav-links.open{display:flex;}
  .nav-links a{padding:14px;font-size:14px;width:100%;}
  .hero-grid{grid-template-columns:1fr!important;}
  .hero-grid .hero-img{order:-1;}
  .hero-btn-group .btn{width:100%;text-align:center;}
  .g2,.g3,.g4{grid-template-columns:1fr!important;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;text-align:center;}
  .section{padding:40px 0;}
  .page-hero{padding:40px 0 50px;}
  .stats-grid{grid-template-columns:repeat(2,1fr)!important;}
}
@media(max-width:480px){
  .container{padding:0 14px;}
  .hero-title{font-size:26px;}
}