:root{
  --bg:#ffffff;
  --bg-soft:#f7f9fc;
  --border:#e5eaf2;
  --border-strong:#d3dbe7;
  --text:#1f2937;
  --text-2:#4b5563;
  --text-3:#8a94a6;
  --accent:#2563eb;
  --ink:#111827;
  --font:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
::selection{background:#dbe7ff;color:#1e3a8a}
a{color:inherit;text-decoration:none}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}

/* 导航 */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:100;
  background:rgba(17,24,39,.95);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav-inner{display:flex;align-items:center;height:64px;gap:32px}
.brand{display:flex;align-items:center;gap:10px;font-size:15.5px;font-weight:700;color:#fff;letter-spacing:.4px}
.brand .logo{width:32px;height:32px;flex:none}
.nav-links{display:flex;align-items:center;gap:24px;margin-left:auto}
.nav-links a{font-size:14px;color:#a7b0c0;transition:color .15s}
.nav-links a:hover,.nav-links a.active{color:#fff}
.nav-links a.active{color:#fff;font-weight:600}
.nav-burger{display:none;margin-left:auto;width:40px;height:40px;border:1px solid rgba(255,255,255,.22);border-radius:8px;background:transparent;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.nav-burger span{display:block;width:17px;height:2px;background:#d1d5db;border-radius:2px;transition:.25s}
.nav-burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-burger.open span:nth-child(2){opacity:0}
.nav-burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Hero */
.hero{
  position:relative;padding:136px 0 0;
  background:#f7f9fc;
  border-bottom:1px solid var(--border);
}
.hero .wrap{text-align:center}
.hero-logo{width:52px;height:52px;margin:0 auto 20px;display:block}
.hero h1{font-size:clamp(28px,3.6vw,38px);font-weight:700;color:var(--ink);letter-spacing:1px}
.hero-sub{
  max-width:720px;margin:18px auto 0;font-size:15.5px;color:var(--text-2);line-height:2;
}
.hero-facts{
  margin:24px auto 0;font-size:13px;color:var(--text-3);letter-spacing:.3px;line-height:2;
}
.hero-facts b{color:var(--text-2);font-weight:600}
.hero-actions{display:flex;justify-content:center;gap:12px;margin:34px 0 60px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:11px 24px;border-radius:8px;
  font-size:14px;font-weight:600;transition:background .15s,border-color .15s;cursor:pointer;
}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:#374151}
.btn-ghost{background:#fff;color:var(--text-2);border:1px solid var(--border-strong)}
.btn-ghost:hover{border-color:#9aa7ba;color:var(--ink)}

.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--border);
}
.hero-stat{padding:28px 16px;text-align:center;border-right:1px solid var(--border)}
.hero-stat:last-child{border-right:none}
.hero-stat b{display:block;font-size:28px;font-weight:700;color:var(--ink);letter-spacing:.5px}
.hero-stat span{display:block;font-size:12.5px;color:var(--text-3);margin-top:5px}

/* 子页面横幅 */
.page-hero{
  padding:124px 0 62px;
  background:#f7f9fc;
  border-bottom:1px solid var(--border);
  text-align:center;
}
.page-crumb{font-size:12.5px;color:var(--text-3);margin-bottom:14px}
.page-crumb a{color:var(--accent)}
.page-hero h1{font-size:clamp(24px,3vw,32px);font-weight:700;color:var(--ink);letter-spacing:.5px}
.page-hero p{max-width:680px;margin:14px auto 0;font-size:14.5px;color:var(--text-2);line-height:1.95}

/* 通用 section */
section{padding:88px 0}
.sec-head{max-width:760px;margin:0 auto 52px;text-align:center}
.sec-head h2{font-size:26px;font-weight:700;color:var(--ink);letter-spacing:.5px}
.sec-head p{font-size:14.5px;color:var(--text-2);margin-top:12px;line-height:1.95}
.sec-rule{width:36px;height:2px;background:var(--border-strong);margin:18px auto 0}
.soft{background:var(--bg-soft);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}

/* 产品概览 */
.values-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.value-card{
  padding:28px 26px;border:1px solid var(--border);border-radius:12px;background:#fff;
  transition:border-color .15s;
}
.value-card:hover{border-color:var(--border-strong)}
.value-card h3{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:10px}
.value-card p{font-size:13.5px;color:var(--text-2);line-height:1.95}

.arch-note{max-width:760px;margin:26px auto 0;text-align:center;color:var(--text-3);font-size:13px;line-height:2}

/* 首页亮点 */
.home-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.home-card{
  padding:26px 22px;border:1px solid var(--border);border-radius:10px;background:#fff;
  display:flex;flex-direction:column;transition:border-color .15s;
}
.home-card:hover{border-color:var(--border-strong)}
.home-card h3{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:8px}
.home-card p{font-size:13px;color:var(--text-2);line-height:1.9;flex:1}
.home-card .hl-link{margin-top:14px;font-size:13px;font-weight:600;color:var(--accent)}

/* 行动号召 */
.cta-band{
  background:var(--ink);color:#fff;text-align:center;
  padding:56px 32px;border-radius:12px;
}
.cta-band h2{font-size:clamp(20px,2.6vw,28px);font-weight:700;letter-spacing:.5px;margin-bottom:12px}
.cta-band p{color:#a7b0c0;font-size:14px;max-width:620px;margin:0 auto 26px;line-height:1.9}
.cta-band .hero-actions{margin:0}
.cta-band .btn-ghost{border-color:rgba(255,255,255,.35);color:#fff;background:transparent}
.cta-band .btn-ghost:hover{border-color:#fff;color:#fff}

/* 数据流转 */
.dataflow{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.df-node{position:relative;padding:24px 14px;border:1px solid var(--border);border-radius:10px;background:#fff;text-align:center;transition:border-color .15s}
.df-node:hover{border-color:var(--border-strong)}
.df-node::before{content:"";position:absolute;top:50%;right:-14px;transform:translateY(-50%);width:14px;height:1px;background:var(--border-strong)}
.df-node::after{content:"";position:absolute;top:50%;right:-14px;transform:translateY(-50%);width:0;height:0;border-top:5px solid transparent;border-bottom:5px solid transparent;border-left:9px solid var(--border-strong)}
.df-node:last-child::before,.df-node:last-child::after{display:none}
.df-num{width:28px;height:28px;margin:0 auto 9px;border-radius:50%;display:flex;align-items:center;justify-content:center;border:1px solid var(--border-strong);color:var(--text-2);font-size:12.5px;font-weight:600}
.df-node h4{font-size:14.5px;font-weight:700;color:var(--ink);margin-bottom:5px}
.df-node p{font-size:12px;color:var(--text-3);line-height:1.7}

/* 主要功能 */
.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.feat-card{
  padding:24px 22px;border:1px solid var(--border);border-radius:10px;background:#fff;
  transition:border-color .15s;
}
.feat-card:hover{border-color:var(--border-strong)}
.feat-card h3{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:8px}
.feat-card p{font-size:13px;color:var(--text-2);line-height:1.9}

/* 报文类型 */
.report-table{
  width:100%;border-collapse:collapse;border:1px solid var(--border);border-radius:10px;overflow:hidden;
  font-size:14px;background:#fff;
}
.report-table th{
  background:var(--bg-soft);color:var(--text-2);font-weight:600;text-align:left;
  padding:13px 18px;font-size:13px;letter-spacing:.3px;border-bottom:1px solid var(--border);
}
.report-table td{padding:14px 18px;border-bottom:1px solid var(--border);color:var(--text-2);vertical-align:middle}
.report-table tr:last-child td{border-bottom:none}
.report-table tr:hover td{background:var(--bg-soft)}
.code-badge{
  display:inline-block;padding:3px 10px;border-radius:6px;font-family:Consolas,Menlo,monospace;
  font-size:12.5px;font-weight:600;color:var(--accent);background:#eff4ff;border:1px solid #d6e2ff;
}
.report-table td b{color:var(--ink);font-weight:600}
.report-note{margin-top:16px;text-align:center;color:var(--text-3);font-size:12.5px}

/* 性能 */
.perf-wrap{display:grid;grid-template-columns:1.1fr 1fr;gap:18px;align-items:stretch}
.perf-table{border:1px solid var(--border);border-radius:10px;overflow:hidden;background:#fff}
.perf-row{display:grid;grid-template-columns:1fr 1fr 1fr;border-bottom:1px solid var(--border)}
.perf-row:last-child{border-bottom:none}
.perf-row div{padding:14px 18px;font-size:14px;color:var(--text-2)}
.perf-row.head{background:var(--bg-soft)}
.perf-row.head div{color:var(--text-2);font-weight:600;font-size:13px;letter-spacing:.3px}
.perf-row div b{color:var(--ink);font-size:15px;font-family:Consolas,Menlo,monospace;font-weight:600}
.perf-cards{display:flex;flex-direction:column;gap:10px}
.perf-card{flex:1;padding:18px 22px;border:1px solid var(--border);border-radius:10px;background:#fff}
.perf-card h4{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:4px}
.perf-card p{font-size:12.5px;color:var(--text-3);line-height:1.85}

/* 产品优势 */
.tech-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.tech-card{padding:20px 18px;border:1px solid var(--border);border-radius:10px;background:#fff}
.tech-card:hover{border-color:var(--border-strong)}
.tech-card h4{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:5px}
.tech-card p{font-size:12.5px;color:var(--text-3);line-height:1.8}

/* 部署 */
.deploy-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.deploy-card{padding:26px 24px;border:1px solid var(--border);border-radius:12px;background:#fff}
.deploy-card:hover{border-color:var(--border-strong)}
.deploy-card h3{font-size:15.5px;font-weight:700;color:var(--ink);margin-bottom:8px}
.deploy-card p{font-size:13px;color:var(--text-2);line-height:1.9}
.deploy-card ul{margin-top:10px;list-style:none}
.deploy-card li{font-size:12.5px;color:var(--text-3);padding:3.5px 0 3.5px 16px;position:relative;line-height:1.75}
.deploy-card li::before{content:"";position:absolute;left:2px;top:11px;width:4px;height:4px;border-radius:50%;background:var(--border-strong)}

/* 安全 */
.sec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.sec-item{padding:22px 24px;border:1px solid var(--border);border-radius:10px;background:#fff}
.sec-item:hover{border-color:var(--border-strong)}
.sec-item h4{font-size:14.5px;font-weight:700;color:var(--ink);margin-bottom:5px}
.sec-item p{font-size:12.5px;color:var(--text-3);line-height:1.85}

/* Footer */
footer{border-top:1px solid rgba(255,255,255,.08);padding:34px 0 30px;background:#111827}
.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:14px;color:#fff}
.footer-brand .logo{width:28px;height:28px}
.footer-meta{color:#8e98a9;font-size:12.5px;text-align:right;line-height:1.9}

/* 客服组件 */
.qr-float{
  position:fixed;right:26px;bottom:112px;z-index:90;width:176px;padding:14px 14px 12px;
  background:#fff;border:1px solid var(--border);border-radius:12px;text-align:center;
  box-shadow:0 6px 16px rgba(17,24,39,.10);
}
.qr-float.hidden{display:none}
.qr-close{
  position:absolute;top:8px;right:8px;width:22px;height:22px;border:none;background:none;
  color:var(--text-3);cursor:pointer;display:flex;align-items:center;justify-content:center;border-radius:50%;
}
.qr-close:hover{background:var(--bg-soft);color:var(--ink)}
.qr-float img{width:142px;height:auto;border-radius:6px;display:block;margin:0 auto 8px;border:1px solid var(--border)}
.qr-float b{display:block;font-size:13px;color:var(--ink)}
.qr-float small{display:block;font-size:11.5px;color:var(--text-3);margin-top:2px}

.contact-widget{position:fixed;right:26px;bottom:26px;z-index:99}
.cw-open{
  display:flex;align-items:center;gap:8px;padding:13px 20px;border:none;border-radius:8px;
  background:#111827;color:#fff;font-size:14px;font-weight:600;cursor:pointer;
  transition:background .15s;
}
.cw-open:hover{background:#1f2937}
.cw-panel{
  position:absolute;right:0;bottom:64px;width:344px;max-width:calc(100vw - 36px);
  background:#fff;border:1px solid var(--border);border-radius:14px;overflow:hidden;
  box-shadow:0 12px 32px rgba(17,24,39,.14);display:none;
}
.contact-widget.open .cw-panel{display:block}
.cw-head{display:flex;justify-content:space-between;align-items:center;padding:15px 18px;background:#111827;color:#fff}
.cw-head b{font-size:15px;display:block}
.cw-head small{font-size:11.5px;color:#a7b0c0}
.cw-close{background:none;border:none;color:#c6cdd9;cursor:pointer;padding:4px;display:flex}
.cw-close:hover{color:#fff}
.cw-tabs{display:flex;border-bottom:1px solid var(--border);background:#fff}
.cw-tab{
  flex:1;padding:11px 0;background:none;border:none;font-size:13.5px;color:var(--text-2);
  cursor:pointer;border-bottom:2px solid transparent;
}
.cw-tab:hover{color:var(--ink)}
.cw-tab.on{color:var(--ink);font-weight:600;border-bottom-color:#111827}
.cw-pane{display:none;padding:18px}
.cw-pane.on{display:block}
.cw-qr{text-align:center;padding:8px 0 4px}
.cw-qr img{width:190px;height:auto;border-radius:8px;display:block;margin:0 auto;border:1px solid var(--border)}
.cw-qr b{display:block;font-size:14px;color:var(--ink);margin-top:12px}
.cw-qr span{display:block;font-size:12px;color:var(--text-3);margin-top:3px}
.chat-log{height:236px;overflow-y:auto;display:flex;flex-direction:column;gap:9px;padding:2px 0}
.msg{max-width:84%;padding:9px 13px;border-radius:10px;font-size:13.5px;line-height:1.7;white-space:pre-wrap}
.msg.bot{background:#f3f5f9;color:var(--text);align-self:flex-start;border-top-left-radius:3px}
.msg.user{background:#111827;color:#fff;align-self:flex-end;border-top-right-radius:3px}
.msg.typing{display:flex;gap:4px;align-items:center;padding:12px 14px}
.msg.typing i{width:6px;height:6px;border-radius:50%;background:#9aa7ba;animation:typing 1.2s infinite}
.msg.typing i:nth-child(2){animation-delay:.2s}
.msg.typing i:nth-child(3){animation-delay:.4s}
.msg.offline{background:#fff;color:var(--text-2);border:1px solid var(--border)}
@keyframes typing{0%,60%,100%{opacity:.3}30%{opacity:1}}
.chat-quick{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0 10px}
.chat-quick button{
  padding:6px 12px;border:1px solid var(--border-strong);border-radius:8px;background:#fff;
  font-size:12px;color:var(--text-2);cursor:pointer;transition:border-color .15s,color .15s;
}
.chat-quick button:hover{border-color:#111827;color:#111827}
.chat-input-row{display:flex;gap:8px}
.chat-input-row input{
  flex:1;min-width:0;border:1px solid var(--border-strong);border-radius:8px;padding:10px 12px;
  font-size:13.5px;color:var(--text);outline:none;font-family:var(--font);
}
.chat-input-row input:focus{border-color:#9aa7ba}
.chat-input-row button{
  width:44px;flex:none;border:none;border-radius:8px;background:#111827;color:#fff;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
}
.chat-input-row button:disabled{opacity:.5;cursor:default}
@media(max-width:640px){
  .qr-float{right:16px;bottom:100px}
  .contact-widget{right:16px;bottom:16px}
  .cw-panel{right:0;width:calc(100vw - 32px)}
}

/* 响应式 */
@media(max-width:1080px){
  .values-grid,.deploy-grid,.sec-grid{grid-template-columns:repeat(2,1fr)}
  .feat-grid,.tech-grid{grid-template-columns:repeat(2,1fr)}
  .home-grid{grid-template-columns:repeat(2,1fr)}
  .perf-wrap{grid-template-columns:1fr}
  .dataflow{grid-template-columns:repeat(3,1fr);row-gap:12px}
  .df-node::before,.df-node::after{display:none}
}
@media(max-width:860px){
  .nav-links{
    position:fixed;top:64px;left:0;right:0;flex-direction:column;gap:0;
    background:#111827;border-bottom:1px solid rgba(255,255,255,.08);
    padding:6px 24px 14px;transform:translateY(-130%);transition:transform .3s;align-items:flex-start;
  }
  .nav-links.open{transform:none}
  .nav-links a{width:100%;padding:11px 0;border-bottom:1px solid rgba(255,255,255,.08)}
  .nav-burger{display:flex}
  .hero{padding:118px 0 0}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .hero-stat:nth-child(2){border-right:none}
  .hero-stat{border-bottom:1px solid var(--border)}
  .report-table{font-size:13px}
  .report-table th,.report-table td{padding:11px 12px}
}
@media(max-width:640px){
  section{padding:64px 0}
  .page-hero{padding:100px 0 46px}
  .values-grid,.deploy-grid,.sec-grid,.feat-grid,.tech-grid,.home-grid{grid-template-columns:1fr}
  .dataflow{grid-template-columns:repeat(2,1fr)}
  .perf-row div{padding:11px 12px;font-size:13px}
  .cta-band{padding:40px 20px}
  .footer-inner{flex-direction:column;text-align:center}
  .footer-meta{text-align:center}
}