:root {
  --bg:#020817;
  --surface:#07142b;
  --surface-2:#0b1d3c;
  --line:#173766;
  --text:#f7fbff;
  --muted:#9db0d1;
  --blue:#227bff;
  --cyan:#37e7ff;
  --green:#21d99a;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:"Microsoft YaHei UI","PingFang SC",system-ui,sans-serif;overflow-x:hidden}
a{color:inherit;text-decoration:none}
button,a{-webkit-tap-highlight-color:transparent}
.ambient{position:fixed;z-index:-2;width:540px;height:540px;border-radius:50%;filter:blur(120px);opacity:.14;pointer-events:none}
.ambient-one{top:-240px;right:-170px;background:#1888ff}
.ambient-two{left:-280px;top:560px;background:#704cff}
.site-header{position:sticky;top:0;z-index:20;height:76px;display:flex;align-items:center;gap:48px;padding:0 max(5vw,32px);background:rgba(2,8,23,.78);border-bottom:1px solid rgba(93,145,225,.2);backdrop-filter:blur(20px)}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:.02em;white-space:nowrap}
.brand img{width:38px;height:38px;border-radius:11px}
.site-header nav{display:flex;gap:34px;margin-left:auto;color:#aabbd8;font-size:14px}
.site-header nav a{transition:.2s ease}
.site-header nav a:hover{color:white}
.header-download{margin-left:18px;padding:11px 20px;border:1px solid #2e82ff;border-radius:10px;background:#1467dc;font-size:14px;font-weight:700;box-shadow:0 10px 30px rgba(20,103,220,.22)}
.section-shell{width:min(1160px,calc(100% - 48px));margin:0 auto}
.hero{min-height:690px;display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:48px;padding-top:58px;padding-bottom:72px}
.eyebrow,.section-label,.section-heading>span,.download-card>div>span{display:flex;align-items:center;gap:10px;color:#6ddff8;font-size:12px;font-weight:800;letter-spacing:.16em}
.eyebrow span{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 18px #21d99a}
h1,h2,h3,p{margin-top:0}
h1{margin-bottom:24px;font-size:clamp(52px,6vw,82px);line-height:1.1;letter-spacing:-.055em}
h1 em,h2 em{font-style:normal;color:var(--cyan)}
.hero-lead{max-width:600px;margin-bottom:34px;color:#aabbd8;font-size:19px;line-height:1.9}
.hero-actions{display:flex;align-items:center;gap:25px}
.primary-action{min-width:300px;display:flex;align-items:center;gap:15px;padding:16px 21px;border-radius:14px;background:linear-gradient(135deg,#1978ff,#5b55ff);box-shadow:0 18px 48px rgba(32,109,255,.3);transition:transform .2s ease,box-shadow .2s ease}
.primary-action:hover{transform:translateY(-2px);box-shadow:0 22px 58px rgba(32,109,255,.4)}
.windows-mark{font-size:31px}
.primary-action b,.primary-action small{display:block}
.primary-action b{font-size:16px}
.primary-action small{margin-top:5px;color:#d9e7ff;font-size:11px;font-weight:400}
.text-action{color:#b8c7df;font-size:14px;font-weight:700}
.text-action span{margin-left:5px;color:var(--cyan)}
.trust-row{display:flex;gap:25px;margin-top:26px;color:#7289ad;font-size:12px}
.hero-visual{position:relative;min-height:520px;display:grid;place-items:center}
.orbit{position:absolute;border:1px solid rgba(71,151,255,.24);border-radius:50%;animation:spin 22s linear infinite}
.orbit:after{content:"";position:absolute;top:16%;right:4%;width:8px;height:8px;border-radius:50%;background:var(--cyan);box-shadow:0 0 22px var(--cyan)}
.orbit-large{width:460px;height:460px}
.orbit-small{width:330px;height:330px;animation-direction:reverse;animation-duration:16s}
.app-tile{position:relative;z-index:2;width:240px;height:240px;padding:18px;border-radius:54px;background:linear-gradient(145deg,rgba(23,97,213,.38),rgba(48,231,255,.09));border:1px solid rgba(87,173,255,.52);box-shadow:0 34px 90px rgba(0,84,255,.28),inset 0 1px rgba(255,255,255,.16)}
.app-tile img{width:100%;height:100%;border-radius:40px}
.status-card{position:absolute;z-index:3;display:flex;align-items:center;gap:12px;min-width:218px;padding:14px 17px;border:1px solid rgba(97,151,230,.36);border-radius:14px;background:rgba(8,23,48,.84);box-shadow:0 18px 48px rgba(0,0,0,.28);backdrop-filter:blur(18px)}
.status-card i{width:10px;height:10px;border-radius:50%;background:var(--green);box-shadow:0 0 15px var(--green)}
.status-card b,.status-card small{display:block}
.status-card b{font-size:13px}.status-card small{margin-top:5px;color:#7f95b8;font-size:10px}
.status-card-top{top:82px;right:-16px}.status-card-bottom{bottom:70px;left:-12px}
@keyframes spin{to{transform:rotate(360deg)}}
.signal-strip{display:grid;grid-template-columns:repeat(4,1fr);max-width:1280px;margin:0 auto;border-top:1px solid #14305a;border-bottom:1px solid #14305a;background:#061126}
.signal-strip div{min-height:110px;padding:28px 34px;border-right:1px solid #14305a}
.signal-strip div:last-child{border-right:0}
.signal-strip strong,.signal-strip span{display:block}
.signal-strip strong{font-size:18px}.signal-strip span{margin-top:9px;color:#7188ac;font-size:12px}
.advantages{display:grid;grid-template-columns:.8fr 1.2fr;gap:90px;padding-top:130px;padding-bottom:130px}
.section-heading h2,.performance h2{margin:16px 0 20px;font-size:clamp(38px,4.5vw,58px);line-height:1.22;letter-spacing:-.04em}
.section-heading p,.performance-copy p{color:#8fa3c4;line-height:1.85}
.advantage-list{border-top:1px solid var(--line)}
.advantage-list article{display:grid;grid-template-columns:70px 1fr;gap:20px;padding:28px 0;border-bottom:1px solid var(--line)}
.advantage-list .index{color:#2b8dff;font-size:13px;font-weight:800}
.advantage-list h3{margin-bottom:8px;font-size:23px}.advantage-list p{margin-bottom:0;color:#8fa3c4;line-height:1.65}
.performance{display:grid;grid-template-columns:.82fr 1.18fr;gap:70px;align-items:center;padding-top:110px;padding-bottom:120px}
.performance-panel{padding:36px;border:1px solid #1c3e70;border-radius:24px;background:linear-gradient(145deg,#081831,#061126);box-shadow:0 24px 80px rgba(0,0,0,.2)}
.metric-title,.bar-row{display:grid;grid-template-columns:110px 1fr 100px;gap:18px;align-items:center}
.metric-title{padding-bottom:20px;color:#7790b6;font-size:12px}.metric-title b{text-align:right}
.bar-row{margin:18px 0;color:#7388a8;font-size:13px;font-weight:700}
.bar-track{height:16px;overflow:hidden;border-radius:999px;background:#142c51}
.bar-track i{display:block;width:7%;height:100%;border-radius:inherit;background:#6f87a9}
.bar-row.active{color:white}.bar-row.active .bar-track i{width:100%;background:linear-gradient(90deg,#207bff,#37e7ff);box-shadow:0 0 25px rgba(55,231,255,.35)}
.bar-row b{text-align:right;font-size:15px}
.latency-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:32px;padding-top:26px;border-top:1px solid var(--line)}
.latency-row div{padding:18px;border-radius:14px;background:#0b1e3d}.latency-row span,.latency-row b{display:block}.latency-row span{color:#6f87a9;font-size:11px}.latency-row b{margin-top:8px;font-size:17px}
.install{padding-top:110px;padding-bottom:110px}.install-heading{max-width:590px}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:54px}
.steps article{min-height:250px;padding:32px;border:1px solid #173864;border-radius:20px;background:#061126;transition:.2s ease}.steps article:hover{transform:translateY(-4px);border-color:#2c77db}
.steps article>span{color:#38e1fa;font-size:13px;font-weight:800}.steps h3{margin:48px 0 14px;font-size:23px}.steps p{color:#8196b9;line-height:1.75}
.download-card{position:relative;display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center;margin-bottom:120px;padding:52px 56px;border:1px solid #2a63ae;border-radius:26px;background:linear-gradient(135deg,#0a2044,#07142b);overflow:hidden}
.download-card:before{content:"";position:absolute;right:-80px;top:-140px;width:330px;height:330px;border-radius:50%;background:#1978ff;filter:blur(110px);opacity:.25}
.download-card h2{margin:12px 0 8px;font-size:35px}.download-card p{margin:0;color:#879bbb}
.download-card>a{position:relative;z-index:1;padding:17px 28px;border-radius:12px;background:white;color:#08152d;font-weight:800}.download-card>a span{margin-left:16px;color:#2378f5}
.download-card details{grid-column:1 / -1;color:#7890b6;font-size:11px}.download-card summary{cursor:pointer}.download-card code{display:block;margin-top:12px;overflow-wrap:anywhere;color:#9fb3d2}
footer{display:flex;align-items:center;gap:28px;padding:26px max(5vw,32px);border-top:1px solid #142d50;color:#63799c;font-size:11px}footer p{margin:0 auto}.footer-brand img{width:30px;height:30px}.footer-brand span{color:#b7c7df;font-size:13px}
.floating-download{display:none}
@media(max-width:900px){.site-header nav{display:none}.hero,.advantages,.performance{grid-template-columns:1fr}.hero{padding-top:78px}.hero-copy{text-align:center}.hero-lead{margin-left:auto;margin-right:auto}.hero-actions,.trust-row{justify-content:center}.hero-visual{min-height:450px}.advantages,.performance{gap:46px}.signal-strip{grid-template-columns:1fr 1fr}.signal-strip div:nth-child(2){border-right:0}.signal-strip div:nth-child(-n+2){border-bottom:1px solid #14305a}.steps{grid-template-columns:1fr}.download-card{grid-template-columns:1fr;text-align:center}.download-card>a{justify-self:center}.download-card details{grid-column:auto}}
@media(max-width:600px){.site-header{height:66px;padding:0 18px}.site-header .brand span{font-size:14px}.brand img{width:34px;height:34px}.header-download{display:none}.section-shell{width:min(100% - 30px,1160px)}.hero{min-height:auto;padding-top:62px;padding-bottom:45px}.eyebrow{justify-content:center}h1{font-size:47px}.hero-lead{font-size:16px;line-height:1.75}.hero-actions{flex-direction:column}.primary-action{min-width:100%;justify-content:center}.trust-row{flex-wrap:wrap;gap:10px 18px}.hero-visual{min-height:390px}.orbit-large{width:350px;height:350px}.orbit-small{width:260px;height:260px}.app-tile{width:190px;height:190px;border-radius:44px}.app-tile img{border-radius:32px}.status-card{min-width:182px}.status-card-top{top:44px;right:-4px}.status-card-bottom{bottom:35px;left:-3px}.signal-strip{grid-template-columns:1fr 1fr}.signal-strip div{padding:22px 18px}.advantages,.performance,.install{padding-top:82px;padding-bottom:82px}.section-heading h2,.performance h2{font-size:39px}.advantage-list article{grid-template-columns:50px 1fr}.performance-panel{padding:24px}.metric-title,.bar-row{grid-template-columns:78px 1fr 72px;gap:10px}.latency-row{grid-template-columns:1fr}.steps article{min-height:220px}.download-card{margin-bottom:90px;padding:38px 24px}.download-card h2{font-size:29px}footer{padding-bottom:88px;align-items:flex-start;flex-direction:column;gap:12px}footer p{margin:0}.floating-download{position:fixed;z-index:30;display:block;left:15px;right:15px;bottom:14px;padding:15px;border-radius:12px;background:linear-gradient(135deg,#1978ff,#5b55ff);text-align:center;font-weight:800;box-shadow:0 15px 45px rgba(0,0,0,.4)}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}.orbit{animation:none}.primary-action,.steps article{transition:none}}