:root{
  --blue:#0b63e5;
  --blue-deep:#0a3d91;
  --blue-soft:#eaf4ff;
  --cyan:#13a8b4;
  --green:#35a853;
  --violet:#7357e8;
  --text:#172033;
  --muted:#59657a;
  --line:#d9e6f6;
  --bg:#f7fbff;
  --white:#fff;
  --shadow:0 12px 32px rgba(22,67,140,.12);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",Arial,sans-serif;color:var(--text);background:#fff;line-height:1.65}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1180px,calc(100% - 40px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);border-bottom:1px solid #dbe8f7;backdrop-filter:blur(14px)}
.nav-bar{display:flex;align-items:center;justify-content:space-between;gap:28px;min-height:76px}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand img{width:48px;height:48px;object-fit:contain}
.brand strong{display:block;font-size:20px;line-height:1.2;color:#111827;white-space:nowrap}
.brand small{display:block;font-size:14px;color:#536276;margin-top:3px}
.nav-links{display:flex;align-items:center;gap:34px;font-size:16px;font-weight:650;white-space:nowrap}
.nav-links a{padding:7px 0;border-bottom:3px solid transparent}
.nav-links a:hover,.nav-links a.active{color:var(--blue);border-color:var(--blue)}
.hero{position:relative;overflow:hidden;background:linear-gradient(100deg,#f5fbff 0%,#e9f5ff 48%,#cfe8ff 100%);border-bottom:1px solid #d9e7f7}
.hero:before{content:"";position:absolute;inset:0;background:repeating-radial-gradient(ellipse at 4% 42%,rgba(36,119,224,.14) 0 1px,transparent 1px 16px);opacity:.45}
.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:36px;min-height:360px;padding:58px 0 40px}
.hero-copy{max-width:690px}
.eyebrow{margin:0 0 12px;color:var(--blue);font-weight:750}
h1,h2,h3,p{margin-top:0}
h1{font-size:42px;line-height:1.2;margin-bottom:18px;color:#0a2f78;letter-spacing:0}
.hero-text{font-size:19px;color:#24324a;max-width:720px;margin-bottom:24px}
.hero-actions{display:flex;gap:18px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 24px;border-radius:5px;font-weight:750;border:1px solid var(--blue);transition:.18s ease}
.btn.primary{background:var(--blue);color:#fff;box-shadow:0 10px 24px rgba(11,99,229,.22)}
.btn.secondary{background:#fff;color:var(--blue)}
.btn:hover{filter:brightness(.96);transform:translateY(-1px)}
.hero-visual{align-self:stretch;display:flex;align-items:flex-end;justify-content:flex-end}
.hero-visual img{width:min(520px,100%);max-height:300px;object-fit:contain;object-position:right bottom}
.section{padding:46px 0}
.section-title{text-align:center;margin-bottom:28px}
.section-title h2{font-size:28px;line-height:1.25;margin-bottom:7px;color:#14213d}
.section-title span{display:block;width:40px;height:3px;background:var(--blue);border-radius:99px;margin:0 auto}
.tool-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.tool-card{min-height:238px;padding:22px;background:#fff;border:1px solid #dce8f5;border-radius:6px;box-shadow:var(--shadow);transition:.18s ease}
.tool-card:hover{transform:translateY(-4px);box-shadow:0 16px 36px rgba(22,67,140,.16)}
.card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.icon{width:48px;height:48px;border-radius:6px;color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;box-shadow:0 10px 20px rgba(0,0,0,.12)}
.icon.blue{background:linear-gradient(135deg,#1559e6,#0b7df1)}
.icon.teal{background:linear-gradient(135deg,#0d9ead,#24c4bd)}
.icon.violet{background:linear-gradient(135deg,#6b54e6,#8c6df4)}
.icon.green{background:linear-gradient(135deg,#35a853,#6ac274)}
.badge{font-size:13px;font-weight:750;border-radius:4px;padding:3px 8px;white-space:nowrap}
.badge.online{color:#278044;background:#e5f6e9;border:1px solid #bee9c8}
.badge.planning{color:#c36f10;background:#fff1df;border:1px solid #ffd8a8}
.tool-card h3,.scene-item h3,.workflow-step h3{font-size:19px;margin-bottom:10px;color:#111827}
.tool-card p,.scene-item p,.workflow-step p{color:var(--muted);font-size:15px;margin-bottom:22px}
.card-link,.text-button{font:inherit;font-weight:750;color:var(--blue);background:none;border:0;padding:0}
.card-link:after{content:" →"}
.text-button:disabled{color:#6b7280;cursor:not-allowed}
.scenarios{background:linear-gradient(180deg,#fff 0%,#f8fbff 100%)}
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.scene-item{display:flex;align-items:flex-start;gap:16px}
.line-icon{width:46px;height:46px;flex:0 0 46px;color:var(--blue);border:2px solid currentColor;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:26px;line-height:1}
.service-callout{padding-top:10px}
.callout{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:26px;background:linear-gradient(100deg,#eef7ff,#f9fcff);border:1px solid #cfe3fa;border-radius:6px;padding:28px 34px}
.callout.compact{grid-template-columns:1fr auto}
.building-icon{width:62px;height:62px;color:var(--blue);border:3px solid currentColor;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:34px}
.callout h2{font-size:25px;margin-bottom:8px;color:#14336f}
.callout p{margin:0;color:#334155}
.site-footer{margin-top:20px;background:linear-gradient(90deg,#2f80ed 0%,#4aa3ff 100%);color:#fff;padding:24px 0}
.footer-grid{display:grid;grid-template-columns:1fr 1.8fr;gap:14px 28px;align-items:center}
.footer-brand strong,.footer-brand span{display:block}
.footer-brand span{opacity:.92;margin-top:4px}
.footer-contact,.footer-records{display:flex;align-items:center;justify-content:flex-end;gap:22px;flex-wrap:wrap}
.footer-contact span,.footer-records span{white-space:normal}
.beian{display:inline-flex;align-items:center;gap:6px}
.beian img{width:18px;height:18px;object-fit:contain}
.tool-hero{background:linear-gradient(100deg,#f4fbff,#e6f3ff);border-bottom:1px solid #d8e7f8}
.tool-hero-grid{display:grid;grid-template-columns:1fr 330px;gap:34px;align-items:center;padding:56px 0}
.tool-hero h1{margin-bottom:12px}
.tool-hero p{font-size:18px;color:#32425c;margin-bottom:22px}
.status-card{background:#fff;border:1px solid #cfe3f8;border-radius:6px;box-shadow:var(--shadow);padding:24px}
.status-card strong{display:block;color:var(--blue-deep);font-size:20px;margin-bottom:8px}
.status-card p{font-size:15px;color:var(--muted);margin:0}
.workflow{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.workflow-step{position:relative;background:#fff;border:1px solid var(--line);border-radius:6px;padding:24px;box-shadow:var(--shadow);min-height:230px}
.workflow-step span{display:inline-flex;width:34px;height:34px;border-radius:50%;align-items:center;justify-content:center;background:var(--blue-soft);color:var(--blue);font-weight:800;margin-bottom:14px}
.workflow-step button{border:1px solid #d5dfeb;background:#f5f7fb;color:#758195;border-radius:5px;padding:8px 14px;font:inherit;cursor:not-allowed}
@media(max-width:1024px){
  .nav-bar{align-items:flex-start;flex-direction:column;padding:12px 0}
  .nav-links{width:100%;overflow-x:auto;gap:22px;padding-bottom:2px}
  .hero-grid,.tool-hero-grid{grid-template-columns:1fr}
  .hero-grid{padding-top:38px}
  .hero-visual{justify-content:center}
  .tool-grid,.scene-grid,.workflow{grid-template-columns:repeat(2,1fr)}
  .callout{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-contact,.footer-records{justify-content:flex-start}
}
@media(max-width:640px){
  .container{width:min(100% - 28px,1180px)}
  .brand img{width:40px;height:40px}
  .brand strong{font-size:17px;white-space:normal}
  .brand small{font-size:13px}
  .nav-links{font-size:15px;gap:18px}
  h1{font-size:31px}
  .hero-text,.tool-hero p{font-size:16px}
  .hero-grid,.tool-hero-grid{padding:34px 0}
  .tool-grid,.scene-grid,.workflow{grid-template-columns:1fr}
  .scene-item{padding:0 2px}
  .callout{padding:24px 20px}
  .btn{width:100%}
  .footer-contact,.footer-records{display:block}
  .footer-contact span,.footer-records span{display:block;margin-top:7px}
  .beian{display:flex}
}