/* === ToDesk - 闪电极速紫风 === */
:root {
  --pri: #7c3aed;
  --pri-d: #6d28d9;
  --pri-l: #ede9fe;
  --bg: #fafafc;
  --bg2: #f3f0fa;
  --card: #fff;
  --bdr: #e5dfef;
  --txt: #0f0724;
  --txt2: #554572;
  --txt3: #9589b3;
  --r: 18px;--rs: 12px;
  --sh: 0 1px 3px rgba(124,58,237,.04),0 6px 20px rgba(124,58,237,.06);
  --sh-lg: 0 4px 6px rgba(124,58,237,.03),0 16px 40px rgba(124,58,237,.1);
  --fx: cubic-bezier(.34,1.56,.64,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--txt);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}img{max-width:100%}

.nav{position:fixed;top:0;left:0;right:0;z-index:999;background:rgba(255,255,255,.85);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--bdr)}
.nav-in{max-width:1280px;margin:0 auto;padding:0 36px;height:64px;display:flex;align-items:center;justify-content:space-between}
.nav-logo{display:flex;align-items:center;gap:8px;font-weight:900;font-size:20px;letter-spacing:-.5px;background:linear-gradient(135deg,var(--pri),#a78bfa);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.nav-logo .lg{font-size:26px;-webkit-text-fill-color:var(--pri)}
.nav-links{display:flex;align-items:center;gap:2px}
.nav-links a{padding:7px 14px;border-radius:8px;font-size:13px;font-weight:500;color:var(--txt2);transition:all .25s}
.nav-links a:hover{color:var(--txt);background:var(--bg2)}
.nav-links a.btn-nav{background:linear-gradient(135deg,var(--pri),#a78bfa);color:#fff;font-weight:700;padding:9px 22px;border-radius:24px;box-shadow:0 4px 18px rgba(124,58,237,.3)}
.nav-links a.btn-nav:hover{transform:translateY(-1px);box-shadow:0 8px 26px rgba(124,58,237,.45)}
.nav-tgl{display:none;background:none;border:none;color:var(--txt);font-size:24px;cursor:pointer}

.hero{padding:160px 0 100px;position:relative;overflow:hidden;background:radial-gradient(ellipse 60% 40% at 25% 10%,rgba(124,58,237,.05) 0%,transparent 55%),radial-gradient(ellipse 35% 35% at 75% 80%,rgba(167,139,250,.03) 0%,transparent 50%)}
.hero-in{max-width:1280px;margin:0 auto;padding:0 36px;display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:center;position:relative;z-index:1}
.hero-l .chip{display:inline-flex;align-items:center;gap:6px;padding:6px 16px;border-radius:20px;background:var(--pri-l);color:var(--pri);font-size:12px;font-weight:700;margin-bottom:28px}
.hero-l .chip .dot{width:6px;height:6px;border-radius:50%;background:var(--pri);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.3}}
.hero-l h1{font-size:clamp(34px,5.5vw,52px);font-weight:900;line-height:1.06;letter-spacing:-1.2px;margin-bottom:20px}
.hero-l h1 em{font-style:normal;background:linear-gradient(135deg,var(--pri),#a78bfa);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-l .desc{font-size:15px;color:var(--txt2);line-height:1.75;margin-bottom:36px;max-width:460px}
.hero-btns{display:flex;gap:12px;align-items:center;flex-wrap:wrap}

.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 28px;border-radius:24px;font-size:14px;font-weight:600;transition:all .3s var(--fx);cursor:pointer;border:none;white-space:nowrap}
.btn-pri{background:linear-gradient(135deg,var(--pri),#a78bfa);color:#fff;box-shadow:0 6px 22px rgba(124,58,237,.28)}
.btn-pri:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(124,58,237,.4)}
.btn-out{background:var(--card);color:var(--txt);border:1.5px solid var(--bdr)}
.btn-out:hover{border-color:var(--pri);color:var(--pri)}
.btn-ghost{background:var(--bg2);color:var(--txt2)}
.btn-ghost:hover{background:var(--bdr)}

.hero-r{position:relative;display:flex;justify-content:center}
.screen{background:var(--card);border:1px solid var(--bdr);border-radius:16px;overflow:hidden;width:100%;max-width:400px;box-shadow:var(--sh-lg)}
.screen-bar{padding:10px 16px;background:var(--bg2);border-bottom:1px solid var(--bdr);display:flex;align-items:center;gap:6px;font-size:10px;color:var(--txt3)}
.screen-bar .sd{width:10px;height:10px;border-radius:50%}
.screen-bar .sd:nth-child(1){background:#ef4444}.screen-bar .sd:nth-child(2){background:#f59e0b}.screen-bar .sd:nth-child(3){background:#22c55e}
.screen-body{padding:24px;text-align:center}
.screen-body .conn-icon{font-size:48px;margin-bottom:10px;animation:float 3s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.screen-body .conn-stat{font-size:13px;font-weight:700;color:var(--pri);margin-bottom:4px}
.screen-body .conn-info{font-size:10px;color:var(--txt3);line-height:1.8}
.screen-body .speed-row{display:flex;justify-content:center;gap:24px;margin-top:14px}
.speed-row .sp{text-align:center}
.sp .sp-num{font-size:22px;font-weight:900;color:var(--pri)}
.sp .sp-lbl{font-size:9px;color:var(--txt3)}

.float-card{position:absolute;bottom:-14px;left:-16px;background:var(--card);border:1px solid var(--bdr);border-radius:10px;padding:12px 18px;box-shadow:var(--sh);display:flex;align-items:center;gap:10px}
.float-card .fc-i{width:34px;height:34px;border-radius:8px;background:var(--pri-l);display:grid;place-items:center;font-size:14px}
.float-card .fc-t strong{display:block;font-size:11px;color:var(--txt)}
.float-card .fc-t span{font-size:9px;color:var(--txt3)}

.strip{max-width:1280px;margin:0 auto;padding:0 36px 80px;position:relative;z-index:1}
.strip-in{display:flex;align-items:center;justify-content:center;gap:48px;flex-wrap:wrap;background:var(--card);border:1px solid var(--bdr);border-radius:var(--r);padding:32px 48px;box-shadow:var(--sh)}
.st{padding:0 28px;text-align:center;border-right:1px solid var(--bg2)}
.st:last-child{border-right:none}
.st .st-num{font-size:32px;font-weight:900;color:var(--pri)}
.st .st-lbl{font-size:11px;color:var(--txt3);margin-top:4px}

.sec{max-width:1280px;margin:0 auto;padding:60px 36px}
.sec-hd{text-align:center;margin-bottom:52px}
.sec-hd .badge{display:inline-block;padding:5px 14px;border-radius:20px;background:var(--pri-l);color:var(--pri);font-size:12px;font-weight:700;letter-spacing:.6px;margin-bottom:16px}
.sec-hd h2{font-size:clamp(26px,4vw,38px);font-weight:800;letter-spacing:-.5px;margin-bottom:10px}
.sec-hd p{color:var(--txt3);font-size:14px;max-width:500px;margin:0 auto}

.feat-wrap{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feat{background:var(--card);border:1px solid var(--bdr);border-radius:var(--r);padding:30px 24px;text-align:center;transition:all .3s var(--fx);position:relative;overflow:hidden}
.feat::after{content:'';position:absolute;bottom:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--pri),#a78bfa);transform:scaleX(0);transition:transform .35s var(--fx)}
.feat:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);border-color:transparent}
.feat:hover::after{transform:scaleX(1)}
.feat .f-ico{font-size:36px;margin-bottom:14px;display:block}
.feat h3{font-size:15px;font-weight:700;margin-bottom:6px}
.feat p{font-size:12px;color:var(--txt3);line-height:1.6}

.perf-zone{background:var(--bg2);border-top:1px solid var(--bdr);border-bottom:1px solid var(--bdr)}
.perf-row{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.perf{background:var(--card);border:1px solid var(--bdr);border-radius:var(--r);padding:28px 22px;text-align:center;transition:all .3s}
.perf:hover{transform:translateY(-3px);box-shadow:var(--sh);border-color:rgba(124,58,237,.12)}
.perf .p-num{font-size:42px;font-weight:900;color:var(--pri);line-height:1.1}
.perf .p-unit{font-size:14px;font-weight:600;color:var(--txt2)}
.perf .p-lbl{font-size:11px;color:var(--txt3);margin-top:6px}

.scenes{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.sc{background:var(--card);border:1px solid var(--bdr);border-radius:var(--rs);padding:24px 18px;text-align:center;transition:all .3s}
.sc:hover{transform:translateY(-2px);box-shadow:var(--sh);border-color:rgba(124,58,237,.12)}
.sc .sc-ico{font-size:30px;margin-bottom:8px;display:block}
.sc h4{font-size:13px;font-weight:700}

.faq{max-width:720px;margin:0 auto;display:flex;flex-direction:column;gap:8px}
.faq-item{background:var(--card);border:1px solid var(--bdr);border-radius:var(--rs);overflow:hidden}
.faq-q{width:100%;padding:18px 24px;background:none;border:none;font-family:inherit;font-size:14px;font-weight:600;color:var(--txt);text-align:left;cursor:pointer;display:flex;justify-content:space-between;align-items:center}
.faq-q .arr{font-size:12px;color:var(--pri);transition:transform .3s}
.faq-a{font-size:13px;color:var(--txt2);line-height:1.8;padding:0 24px 18px;display:none}
.faq-item.open .faq-a{display:block}
.faq-item.open .arr{transform:rotate(180deg)}

.cta-wrap{max-width:1280px;margin:0 auto;padding:60px 36px}
.cta{background:linear-gradient(135deg,var(--pri-l),rgba(167,139,250,.12));border:1px solid rgba(124,58,237,.08);border-radius:var(--r);padding:64px 48px;text-align:center}
.cta h2{font-size:clamp(26px,4vw,34px);font-weight:800;margin-bottom:12px}
.cta p{color:var(--txt2);font-size:15px;margin-bottom:28px}
.cta-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

.ft{background:var(--bg2);border-top:1px solid var(--bdr)}
.ft-grid{max-width:1280px;margin:0 auto;padding:56px 36px 32px;display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:48px}
.ft-b .ft-logo{font-size:18px;font-weight:900;letter-spacing:-.3px;margin-bottom:12px;background:linear-gradient(135deg,var(--pri),#a78bfa);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.ft-b p{font-size:12px;color:var(--txt3);line-height:1.7;max-width:240px}
.ft-c h4{font-size:12px;font-weight:700;margin-bottom:14px;color:var(--txt2)}
.ft-c a{display:block;font-size:12px;color:var(--txt3);padding:5px 0;transition:color .2s}
.ft-c a:hover{color:var(--pri)}
.ft-btm{max-width:1280px;margin:0 auto;padding:16px 36px;border-top:1px solid var(--bdr);display:flex;justify-content:space-between;font-size:11px;color:var(--txt3);flex-wrap:wrap;gap:8px}

/* Download */
.dl-hero{padding:140px 0 60px;text-align:center}
.dl-hero h1{font-size:clamp(28px,4vw,40px);font-weight:900;margin-bottom:12px}
.dl-hero .dl-sub{color:var(--txt2);font-size:15px;margin-bottom:20px}
.dl-meta{display:inline-flex;gap:20px;font-size:12px;color:var(--txt3);flex-wrap:wrap;justify-content:center}
.dl-grid{max-width:1280px;margin:0 auto 56px;padding:0 36px;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.dl-card{background:var(--card);border:1px solid var(--bdr);border-radius:var(--r);padding:30px 22px;text-align:center;transition:all .3s var(--fx);display:flex;flex-direction:column;gap:12px}
.dl-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);border-color:var(--pri)}
.dl-card .dl-ico{font-size:36px}
.dl-card h3{font-size:15px;font-weight:700}
.dl-card .dl-ver{font-size:10px;color:var(--txt3);padding:4px 10px;background:var(--bg2);border-radius:6px;align-self:center}
.dl-card .dl-btns .btn{justify-content:center;width:100%}
.dl-spec{max-width:800px;margin:0 auto;background:var(--card);border:1px solid var(--bdr);border-radius:var(--r);overflow:hidden}
.dl-spec .sr{display:grid;grid-template-columns:140px 1fr;border-bottom:1px solid var(--bdr)}
.dl-spec .sr:last-child{border-bottom:none}
.dl-spec .sl{padding:14px 20px;background:var(--pri-l);font-size:12px;font-weight:700;color:var(--pri)}
.dl-spec .sv{padding:14px 20px;font-size:12px;color:var(--txt2)}

.err-page{min-height:100vh;display:grid;place-items:center;background:var(--bg);padding:24px}
.err-box{max-width:500px;text-align:center;background:var(--card);border:1px solid var(--bdr);border-radius:var(--r);padding:60px 48px;box-shadow:var(--sh-lg)}
.err-box .e404{font-size:clamp(80px,14vw,130px);font-weight:900;color:var(--pri);line-height:1;margin-bottom:4px}
.err-box h1{font-size:20px;font-weight:700;margin-bottom:10px}
.err-box p{color:var(--txt3);font-size:13px;line-height:1.7;margin-bottom:28px}
.err-box .e-btns{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}

@media(max-width:1024px){
  .hero-in{grid-template-columns:1fr;gap:48px;text-align:center}
  .hero-l .desc{margin-inline:auto}.hero-btns{justify-content:center}.hero-r{display:none}
  .feat-wrap{grid-template-columns:repeat(2,1fr)}.perf-row{grid-template-columns:repeat(2,1fr)}
  .scenes{grid-template-columns:repeat(2,1fr)}.dl-grid{grid-template-columns:repeat(2,1fr)}
  .ft-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .nav-links{display:none}.nav-tgl{display:block}
  .nav-links.open{display:flex;flex-direction:column;position:absolute;top:64px;left:0;right:0;background:var(--card);border-bottom:1px solid var(--bdr);padding:12px 20px;gap:4px;z-index:99}
  .hero{padding:130px 0 60px}
  .feat-wrap,.perf-row,.scenes{grid-template-columns:1fr}.dl-grid{grid-template-columns:1fr}
  .ft-grid{grid-template-columns:1fr;gap:32px}.sec{padding:48px 20px}
  .cta{padding:44px 24px}.strip-in{flex-direction:column;gap:24px;padding:28px 32px}
  .st{border-right:none;border-bottom:1px solid var(--bg2);padding:12px 0}.st:last-child{border-bottom:none}
}