*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:'Segoe UI','MiSans','Microsoft YaHei UI','Microsoft YaHei','PingFang SC',system-ui,sans-serif;
  color:#1f2d3d;background:#f4f5f6;-webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit}
.lp-nav{
  height:68px;display:flex;align-items:center;gap:34px;padding:0 6vw;
  background:rgba(255,255,255,.94);backdrop-filter:blur(12px);
  border-bottom:1px solid #dce2e6;position:sticky;top:0;z-index:20;
}
.lp-brand{display:flex;align-items:center;gap:10px}
.lp-brand img{width:118px;height:auto;display:block}
.lp-brand span{font-size:15px;font-weight:700;letter-spacing:.2px;color:#142438}
.lp-links{display:flex;gap:26px;font-size:12.5px;color:#5d6a78}
.lp-links a:hover{color:#b52b3a}
.lp-actions{margin-left:auto;display:flex;align-items:center;gap:16px}
.lp-login{font-size:12.5px;color:#3d4c5c}
.lp-register{font-size:12.5px;color:#b52b3a;font-weight:600}
.lp-nav-cta,.lp-btn{display:inline-flex;align-items:center;justify-content:center;height:38px;padding:0 17px;border-radius:5px;background:#b52b3a;color:#fff;font-size:12.5px;font-weight:600}
.lp-nav-cta:hover,.lp-btn.primary:hover{background:#982330}
.lp-hero{
  display:grid;grid-template-columns:1.02fr .98fr;gap:40px;align-items:center;
  padding:64px 6vw 70px;background:
    radial-gradient(800px 500px at 12% 0%,rgba(181,43,58,.28),transparent 60%),
    radial-gradient(700px 500px at 95% 90%,rgba(44,118,100,.12),transparent 60%),
    #0d1a29;color:#fff;
}
.lp-hero-copy{max-width:600px}
.lp-badge{display:inline-block;font-size:10px;letter-spacing:.16em;font-weight:700;color:#e08a92;border:1px solid rgba(224,138,146,.35);border-radius:4px;padding:5px 9px;margin-bottom:20px}
.lp-hero h1{font-size:clamp(34px,4.2vw,54px);line-height:1.12;letter-spacing:-1.6px;margin:0 0 18px;font-weight:700}
.lp-hero h1 em{font-style:normal;color:#e08a92}
.lp-hero p{color:#b9c6d3;font-size:14px;line-height:1.85;max-width:520px;margin:0 0 26px}
.lp-hero-actions{display:flex;gap:10px;margin-bottom:34px}
.lp-btn{height:42px;padding:0 22px;font-size:13px}
.lp-btn.ghost{background:transparent;border:1px solid #64768a;color:#f0f4f7}
.lp-btn.ghost:hover{background:#20364c}
.lp-stats{display:flex;gap:38px}
.lp-stats b{display:block;font-size:23px;letter-spacing:-.4px}
.lp-stats span{font-size:11px;color:#8fa3b6}
.lp-hero-ui{position:relative;padding:18px 0 26px}
.lp-window{background:#fff;border-radius:9px;overflow:hidden;box-shadow:0 30px 80px rgba(0,0,0,.5);color:#1f2d3d;transform:rotate(-.6deg)}
.lp-winbar{height:30px;background:#e9ebf0;display:flex;align-items:center;gap:6px;padding:0 11px;border-bottom:1px solid #dce2e6}
.lp-winbar i{width:8px;height:8px;border-radius:50%;background:#d1d6dd}
.lp-winbar i:nth-child(1){background:#ff5f57}.lp-winbar i:nth-child(2){background:#febc2e}.lp-winbar i:nth-child(3){background:#28c840}
.lp-winbar span{margin-left:8px;font-size:9px;color:#7b8794}
.lp-chat{padding:14px 16px 12px;background:#fbfbfd;min-height:360px;display:flex;flex-direction:column}
.lp-chat-top{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.lp-model-chip{display:inline-flex;align-items:center;gap:6px;font-size:9.5px;border:1px solid #dce2e6;background:#fff;border-radius:999px;padding:5px 9px;color:#3d4c5c}
.lp-model-chip i{width:6px;height:6px;border-radius:50%;background:#2c7664}
.lp-model-chip b{color:#b52b3a;font-weight:600}
.lp-tools{margin-left:auto;font-size:9px;color:#8b98a6}
.lp-msg{font-size:10.5px;line-height:1.65;margin-bottom:11px;max-width:88%}
.lp-msg.user{align-self:flex-end;background:#b52b3a;color:#fff;padding:8px 11px;border-radius:11px 11px 3px 11px}
.lp-msg.ai{display:flex;gap:8px;align-items:flex-start;background:#fff;border:1px solid #e3e7ec;border-radius:11px;padding:9px 11px}
.lp-ai{width:20px;height:20px;border-radius:6px;background:#f5e6e8;color:#982330;font-size:8px;font-weight:700;display:grid;place-items:center;flex:none}
.lp-msg pre{background:#f2f4f7;border-radius:5px;padding:7px 8px;font-family:Consolas,monospace;font-size:8.5px;line-height:1.55;margin:6px 0;overflow:hidden}
.lp-msg code{background:#f2f4f7;border-radius:3px;padding:0 3px;font-family:Consolas,monospace;font-size:9px}
.lp-input{margin-top:auto;display:flex;align-items:center;gap:8px;border-top:1px solid #e8ebf0;padding-top:10px}
.lp-input span{flex:1;height:30px;border:1px solid #dce2e6;border-radius:7px;display:flex;align-items:center;padding:0 10px;font-size:9px;color:#aab3bf;background:#fff}
.lp-input button{width:30px;height:30px;border:0;border-radius:7px;background:#b52b3a;color:#fff;font-size:13px}
.lp-float{position:absolute;right:-10px;bottom:-4px;display:flex;align-items:center;gap:9px;background:#fff;border:1px solid #dce2e6;border-radius:7px;padding:9px 12px;box-shadow:0 12px 30px rgba(0,0,0,.18)}
.lp-dot{width:7px;height:7px;border-radius:50%;background:#2c7664;box-shadow:0 0 8px #2c7664}
.lp-float b{display:block;font-size:10px;color:#142438}
.lp-float small{display:block;font-size:8px;color:#8b98a6;margin-top:1px}
.lp-models{display:flex;align-items:center;gap:26px;padding:22px 6vw;background:#fff;border-bottom:1px solid #dce2e6;flex-wrap:wrap}
.lp-label{font-size:9px;letter-spacing:.18em;font-weight:800;color:#b52b3a}
.lp-model-row{display:flex;gap:9px;flex-wrap:wrap}
.lp-model-row span{font-size:10.5px;color:#4a5968;border:1px solid #e0e5ea;background:#fafbfc;border-radius:999px;padding:5px 11px}
.lp-section{padding:64px 6vw}
.lp-section.alt{background:#fff;border-top:1px solid #e3e7ec;border-bottom:1px solid #e3e7ec}
.lp-section-head{max-width:620px;margin-bottom:32px}
.lp-section-head h2{font-size:31px;letter-spacing:-.8px;margin:10px 0 7px;color:#142438}
.lp-section-head p{font-size:12.5px;color:#687482;line-height:1.7;margin:0}
.lp-download-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.lp-download{border:1px solid #dce2e6;background:#fff;padding:24px;display:flex;flex-direction:column;border-radius:6px}
.lp-dl-icon{width:42px;height:42px;border-radius:9px;display:grid;place-items:center;color:#fff;font-size:17px;font-weight:700;margin-bottom:16px}
.lp-dl-icon.android{background:#2c7664}.lp-dl-icon.ios{background:#142438}.lp-dl-icon.win{background:#b52b3a}
.lp-download h3{margin:0 0 5px;font-size:17px;color:#142438}
.lp-download p{margin:0 0 18px;font-size:11.5px;color:#687482}
.lp-download button{height:38px;border:0;border-radius:5px;background:#142438;color:#fff;font-size:12px;font-weight:600;cursor:pointer}
.lp-download button:hover{background:#20364c}
.lp-download a{margin-top:10px;font-size:11px;color:#b52b3a}
.lp-note{margin-top:14px;font-size:10.5px;color:#8b98a6}
.lp-features{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid #dce2e6;border-bottom:1px solid #dce2e6}
.lp-features>div{padding:24px 22px;border-left:1px solid #dce2e6}
.lp-features>div:first-child{border-left:0}
.lp-features b{display:block;font-size:14px;color:#142438;margin-bottom:7px}
.lp-features span{display:block;font-size:11.5px;color:#687482;line-height:1.7}
.lp-cta{margin:20px 6vw 64px;padding:36px 40px;background:#142438;border-radius:8px;display:flex;align-items:center;gap:24px;color:#fff}
.lp-cta h2{margin:0 0 6px;font-size:25px;letter-spacing:-.5px}
.lp-cta p{margin:0;font-size:12px;color:#aebdca}
.lp-cta .lp-btn{margin-left:auto;flex:none}
.lp-footer{padding:36px 6vw 40px;background:#fff;border-top:1px solid #dce2e6;text-align:center}
.lp-brand.small{justify-content:center}
.lp-brand.small img{width:150px}
.lp-footer p{font-size:10.5px;color:#8b98a6;margin:9px 0 0}
.lp-footer .lp-copy{color:#aab3bf;font-size:9.5px}
.lp-toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,12px);background:#142438;color:#fff;padding:11px 17px;border-radius:7px;font-size:12px;opacity:0;pointer-events:none;transition:.2s;z-index:50}
.lp-toast.show{opacity:1;transform:translate(-50%,0)}
@media(max-width:980px){
  .lp-hero{grid-template-columns:1fr;padding-top:44px}
  .lp-hero-ui{max-width:560px;margin:0 auto;width:100%}
  .lp-download-grid{grid-template-columns:1fr}
  .lp-features{grid-template-columns:1fr 1fr}
  .lp-features>div:nth-child(3){border-left:0;border-top:1px solid #dce2e6}
  .lp-features>div:nth-child(4){border-top:1px solid #dce2e6}
  .lp-cta{flex-direction:column;align-items:flex-start}
  .lp-cta .lp-btn{margin-left:0}
}
@media(max-width:640px){
  .lp-nav{padding:0 18px;gap:14px;height:60px}
  .lp-brand img{width:92px}
  .lp-brand span{display:none}
  .lp-links{display:none}
  .lp-login{display:none}
  .lp-hero{padding:36px 18px 44px}
  .lp-section{padding:44px 18px}
  .lp-models{padding:18px}
  .lp-features{grid-template-columns:1fr}
  .lp-features>div{border-left:0;border-top:1px solid #dce2e6}
  .lp-features>div:first-child{border-top:0}
  .lp-cta{margin:10px 18px 44px;padding:26px}
  .lp-stats{gap:22px}
  .lp-float{right:0}
}