*{margin:0;padding:0;box-sizing:border-box;}
body{font-family:"微软雅黑","Microsoft YaHei",sans-serif;color:#26384b;line-height:1.85;background:#fff;}
a{color:#0066cc;}
.top{background:#0066cc;color:#fff;padding:10px 14px;text-align:center;}
.header{width:min(1200px,calc(100% - 40px));margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding:20px 0;}
.logo{font-size:28px;font-weight:bold;color:#0066cc;}
.nav a{margin:0 15px;text-decoration:none;color:#333;font-size:16px;}
.nav a:hover{color:#0066cc;}
.menu-toggle{display:none;border:1px solid #cfe2ff;background:#fff;color:#0066cc;border-radius:6px;padding:8px 12px;font-size:16px;font-weight:bold;line-height:1;cursor:pointer;}
.hero{position:relative;min-height:340px;display:flex;align-items:center;background:linear-gradient(90deg,rgba(0,42,88,.94),rgba(0,102,204,.78) 56%,rgba(0,102,204,.46)),url("../images/vr-safety-hall-render.webp") center/cover no-repeat;color:#fff;}
.hero-inner{width:min(1200px,calc(100% - 40px));margin:0 auto;padding:58px 0;}
.breadcrumb{margin-bottom:18px;font-size:14px;color:#dceeff;}
.breadcrumb a{color:#fff;text-decoration:none;}
.hero h1{max-width:900px;font-size:40px;line-height:1.35;margin-bottom:18px;}
.hero p{max-width:850px;font-size:18px;color:#eef7ff;}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px;}
.button{display:inline-block;padding:11px 24px;border-radius:6px;background:#fff;color:#0066cc;text-decoration:none;font-weight:bold;}
.button.secondary{border:1px solid rgba(255,255,255,.65);background:rgba(0,51,102,.32);color:#fff;}
.layout{width:min(1200px,calc(100% - 40px));margin:46px auto;display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:34px;align-items:start;}
.content{min-width:0;}
.content section{margin-bottom:42px;scroll-margin-top:18px;}
.content h2{font-size:28px;line-height:1.4;color:#0066cc;margin-bottom:16px;padding-bottom:10px;border-bottom:2px solid #e2efff;}
.content h3{font-size:20px;color:#174f86;margin:22px 0 9px;}
.content p{margin-bottom:14px;}
.content ul,.content ol{padding-left:24px;margin:12px 0 18px;}
.content li{margin:7px 0;}
.lead{font-size:18px;color:#405b76;background:#f3f8ff;border-left:4px solid #0066cc;border-radius:0 8px 8px 0;padding:20px 22px;margin-bottom:34px;}
.info-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:20px 0;}
.info-card{padding:22px;border:1px solid #dcecff;border-radius:10px;background:#f7fbff;}
.info-card h3{margin-top:0;color:#0066cc;}
.table-wrap{overflow-x:auto;margin:20px 0;}
table{width:100%;border-collapse:collapse;min-width:660px;background:#fff;}
th,td{padding:13px 15px;border:1px solid #dce7f3;text-align:left;vertical-align:top;}
th{background:#edf6ff;color:#174f86;}
.tip{margin:20px 0;padding:17px 20px;border-radius:8px;background:#fff8e8;border:1px solid #f5d891;color:#6b531d;}
.steps{counter-reset:step;display:grid;gap:14px;margin:18px 0;}
.step{position:relative;padding:18px 20px 18px 64px;border:1px solid #dcecff;border-radius:8px;background:#fff;box-shadow:0 5px 16px rgba(0,51,102,.04);}
.step::before{counter-increment:step;content:counter(step);position:absolute;left:18px;top:18px;width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:#0066cc;color:#fff;font-weight:bold;}
.faq details{border:1px solid #dcecff;border-radius:8px;background:#fff;margin-bottom:12px;padding:0 18px;}
.faq summary{cursor:pointer;padding:16px 0;color:#174f86;font-weight:bold;}
.faq details p{padding:0 0 16px;margin:0;color:#4d6073;}
.sidebar{position:sticky;top:18px;}
.side-card{border:1px solid #dcecff;border-radius:10px;background:#f7fbff;padding:22px;margin-bottom:18px;}
.side-card h2{font-size:20px;color:#0066cc;margin-bottom:12px;}
.side-card ul{list-style:none;}
.side-card li{border-bottom:1px solid #e2edf8;padding:8px 0;}
.side-card li:last-child{border-bottom:0;}
.side-card a{text-decoration:none;}
.contact-card{background:linear-gradient(135deg,#0058b3,#0084dc);color:#fff;}
.contact-card h2,.contact-card a{color:#fff;}
.contact-card .button{margin-top:14px;color:#0066cc;}
.related{width:min(1200px,calc(100% - 40px));margin:0 auto 52px;}
.related h2{text-align:center;color:#0066cc;font-size:28px;margin-bottom:24px;}
.related-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;}
.related-card{display:block;padding:20px;border:1px solid #dcecff;border-radius:9px;background:#f7fbff;text-decoration:none;color:#26384b;}
.related-card strong{display:block;color:#0066cc;font-size:17px;margin-bottom:8px;}
.related-card:hover{border-color:#8fc5ff;box-shadow:0 9px 22px rgba(0,70,145,.09);}
.footer{background:#003366;color:#fff;text-align:center;padding:30px 14px;margin-top:50px;line-height:1.8;}
.footer a{color:#fff;text-decoration:none;}
@media(max-width:900px){
  .layout{grid-template-columns:1fr;}
  .sidebar{position:static;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media(max-width:768px){
  body{overflow-x:hidden;}
  .header{width:100%;padding:16px 14px;position:relative;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;}
  .logo{font-size:24px;line-height:1.3;}
  .menu-toggle{display:inline-flex;align-items:center;justify-content:center;min-width:48px;min-height:40px;margin-left:auto;}
  .nav{display:none;width:100%;margin-top:12px;padding:10px 0 0;border-top:1px solid #e5f1ff;background:#fff;}
  .nav.is-open{display:flex;flex-direction:column;align-items:stretch;}
  .nav a{display:block;margin:0;padding:11px 4px;font-size:16px;border-bottom:1px solid #f0f4f8;}
  .hero{min-height:310px;}
  .hero-inner{width:calc(100% - 28px);min-width:0;padding:42px 0;}
  .hero h1{max-width:100%;font-size:27px;line-height:1.42;overflow-wrap:anywhere;word-break:break-word;}
  .hero p{max-width:100%;font-size:16px;overflow-wrap:anywhere;word-break:break-word;}
  .hero-actions{gap:10px;}
  .hero-actions .button{padding:10px 16px;}
  .layout{width:calc(100% - 28px);min-width:0;margin:34px auto;}
  .content,.content section,.lead,.keyword-note,.custom-capability{min-width:0;max-width:100%;overflow-wrap:anywhere;word-break:break-word;}
  .content h2{font-size:24px;}
  .info-grid{grid-template-columns:1fr;}
  .related{width:calc(100% - 28px);}
  .related-grid{grid-template-columns:1fr;}
}