:root{
  color-scheme:dark;
  --bg:#03141d;
  --bg-soft:#061e2a;
  --panel:#082936;
  --panel-2:#0a3140;
  --line:#174d60;
  --line-bright:#1b7187;
  --cyan:#1dddf3;
  --blue:#3177ff;
  --text:#f2fcff;
  --muted:#9ac4ce;
  --green:#70edb0;
  --warning:#ffc26a;
  font-family:"Microsoft YaHei UI","PingFang SC","Segoe UI",system-ui,sans-serif;
  scroll-behavior:smooth;
}
*{box-sizing:border-box}
html{background:var(--bg)}
body{margin:0;overflow-x:hidden;color:var(--text);background:
  radial-gradient(circle at 80% 2%,rgba(24,119,151,.28),transparent 31rem),
  radial-gradient(circle at 15% 42%,rgba(20,91,122,.12),transparent 28rem),
  var(--bg);line-height:1.6}
a{color:var(--cyan);text-decoration:none}
button,input,select{font:inherit}
img{max-width:100%;display:block}
.container{width:min(1180px,calc(100% - 40px));margin-inline:auto}
.skip-link{position:fixed;left:12px;top:-80px;z-index:999;background:#fff;color:#001820;padding:10px 14px;border-radius:8px}
.skip-link:focus{top:12px}
.site-header{height:76px;position:sticky;top:0;z-index:50;background:rgba(3,20,29,.82);border-bottom:1px solid rgba(44,137,162,.28);backdrop-filter:blur(18px)}
.header-inner{height:100%;display:flex;align-items:center;gap:26px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;min-width:max-content}
.brand img{filter:drop-shadow(0 8px 18px rgba(14,170,218,.25))}
.brand span{display:flex;flex-direction:column;line-height:1.08}
.brand b{font-size:18px;font-weight:900;letter-spacing:.02em}
.brand small{font:700 9px/1.2 "Segoe UI",sans-serif;letter-spacing:.18em;color:#66dced;margin-top:5px}
nav{display:flex;align-items:center;gap:26px;margin-left:auto}
nav a{color:#bcdde4;font-size:14px}
nav a:hover{color:#fff}
.header-cta{padding:9px 15px;border:1px solid #1986a3;border-radius:10px;font-size:13px;font-weight:800;color:#dffcff;background:#0b3545}
.header-cta:hover{border-color:var(--cyan);transform:translateY(-1px)}

.hero{padding:88px 0 76px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(450px,.95fr);align-items:center;gap:72px}
.hero-copy,.product-visual,.window{min-width:0}
.eyebrow,.kicker{display:inline-flex;align-items:center;gap:9px;text-transform:uppercase;letter-spacing:.13em;font-size:12px;font-weight:900;color:#78eafa}
.eyebrow span{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 0 5px rgba(112,237,176,.11)}
.hero h1{font-size:clamp(50px,6vw,78px);line-height:1.04;letter-spacing:-.045em;margin:24px 0 24px;max-width:720px}
.hero h1 em{font-style:normal;background:linear-gradient(100deg,var(--cyan),#5a8dff);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:19px;line-height:1.85;color:#b6d7de;max-width:650px;margin:0}
.hero-actions{display:flex;align-items:center;gap:12px;margin-top:32px;flex-wrap:wrap}
.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:11px;padding:13px 20px;font-weight:900;color:#fff;transition:transform .2s ease,filter .2s ease,border-color .2s ease}
.button:hover{transform:translateY(-2px);filter:brightness(1.08)}
.button.primary{background:linear-gradient(105deg,#08bed9,#316df4);box-shadow:0 14px 34px rgba(13,128,205,.25)}
.button.secondary{background:#0b2d3a;border-color:#1b6379;color:#dffaff}
.button.wide{width:100%;margin-top:auto}
.microcopy{font-size:12px;color:#789faa;margin:13px 0 0}
.trust-row{display:flex;gap:18px;flex-wrap:wrap;margin-top:26px;color:#97c3cc;font-size:13px}
.trust-row span::first-letter{color:var(--green)}

.product-visual{position:relative;min-height:500px;display:grid;place-items:center}
.visual-glow{position:absolute;width:420px;height:420px;border-radius:50%;background:rgba(12,163,212,.18);filter:blur(55px)}
.window{position:relative;width:100%;background:linear-gradient(145deg,#0b3443,#061e2a);border:1px solid #21687d;border-radius:19px;box-shadow:0 35px 90px rgba(0,0,0,.42);overflow:hidden;transform:perspective(1000px) rotateY(-3deg) rotateX(1deg)}
.window::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(120deg,rgba(255,255,255,.06),transparent 25%)}
.window-top{height:61px;display:flex;align-items:center;justify-content:space-between;padding:0 18px;border-bottom:1px solid #174e61;background:#082735}
.window-brand{display:flex;align-items:center;gap:9px;font-size:13px;font-weight:900}
.pro-chip{font-size:10px;letter-spacing:.15em;border:1px solid #1f8299;color:#79efff;padding:5px 8px;border-radius:99px}
.window-body{display:grid;grid-template-columns:128px 1fr;min-height:330px}
.window aside{padding:18px 12px;border-right:1px solid #174e61;display:flex;flex-direction:column;gap:8px;color:#7faab3;font-size:11px}
.window aside b{color:#c8edf3;margin:0 6px 8px}
.window aside span{padding:8px 9px;border-radius:7px}
.window aside .active{background:#0d4355;color:#76ecff;border-left:2px solid var(--cyan)}
.dash{padding:20px}
.dash-head{display:flex;justify-content:space-between;align-items:center;font-size:13px}
.dash-head small{font-size:9px;color:#719ba5}
.metric-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:14px 0}
.metric-grid div{border:1px solid #17566a;background:#082936;border-radius:9px;padding:11px}
.metric-grid strong{display:block;color:var(--cyan);font-size:20px}
.metric-grid span{font-size:9px;color:#85b2bb}
.task{padding:12px 0;border-top:1px solid rgba(33,104,125,.55)}
.task div{display:flex;justify-content:space-between;gap:10px;font-size:10px}
.task div span{color:#75ddeb}
.task i{display:block;height:5px;background:#031821;border-radius:99px;margin-top:8px;overflow:hidden}
.task em{display:block;height:100%;background:linear-gradient(90deg,var(--cyan),var(--blue));border-radius:inherit}
.floating-card{position:absolute;background:rgba(8,44,57,.96);border:1px solid #1d6f85;border-radius:12px;padding:11px 14px;box-shadow:0 15px 35px #0008;display:flex;flex-direction:column;font-size:10px;color:#8bbac3}
.floating-card strong{font-size:15px;color:#fff;margin-top:1px}
.floating-card.one{right:-24px;top:74px}
.floating-card.two{left:-25px;bottom:62px}

.proof-strip{border-block:1px solid rgba(38,115,136,.45);background:rgba(5,27,38,.72)}
.proof-grid{display:grid;grid-template-columns:repeat(4,1fr);padding:25px 0}
.proof-grid div{padding:0 24px;border-right:1px solid #174657}
.proof-grid div:first-child{padding-left:0}
.proof-grid div:last-child{border:0}
.proof-grid strong,.proof-grid span{display:block}
.proof-grid strong{font-size:17px}
.proof-grid span{font-size:12px;color:#7faab4;margin-top:3px}

.section{padding:104px 0}
.section-heading{max-width:720px;margin-bottom:42px}
.section-heading.compact{margin-bottom:28px}
.section-heading h2{font-size:clamp(34px,4vw,50px);line-height:1.15;letter-spacing:-.035em;margin:12px 0 14px}
.section-heading p{color:var(--muted);font-size:16px;line-height:1.8;margin:0}
.kicker{color:var(--cyan)}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.feature-card{min-height:230px;position:relative;display:flex;flex-direction:column;justify-content:space-between;background:linear-gradient(145deg,rgba(9,44,57,.94),rgba(5,29,40,.94));border:1px solid #174f61;border-radius:16px;padding:24px;overflow:hidden}
.feature-card::before{content:"";position:absolute;width:130px;height:130px;border-radius:50%;right:-65px;top:-65px;background:rgba(23,135,168,.1)}
.feature-card.featured{border-color:#23839a;background:linear-gradient(145deg,#0c4050,#072331)}
.feature-num{font:900 12px/1 "Segoe UI",sans-serif;letter-spacing:.15em;color:#58dced}
.feature-card h3{font-size:20px;margin:26px 0 8px}
.feature-card p{margin:0;color:#9fc5cd;font-size:14px;line-height:1.8}
.tag{align-self:flex-start;margin-top:20px;font-size:10px;color:#9feeff;border:1px solid #1f687b;border-radius:99px;padding:5px 9px}

.pricing-section{background:linear-gradient(180deg,rgba(6,29,40,.15),rgba(9,48,63,.5),rgba(6,29,40,.12));border-block:1px solid rgba(33,101,119,.25)}
.pricing-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;align-items:stretch}
.price-card{position:relative;display:flex;flex-direction:column;background:#082936;border:1px solid #174f61;border-radius:17px;padding:25px;min-height:472px}
.price-card.popular{border-color:var(--cyan);box-shadow:0 18px 55px rgba(8,166,199,.14);transform:translateY(-8px)}
.popular-label{position:absolute;right:18px;top:-12px;background:linear-gradient(90deg,#0ebbd7,#3175f8);color:#fff;border-radius:99px;padding:5px 11px;font-size:11px;font-weight:900}
.price-top{display:flex;align-items:center;justify-content:space-between}
.price-top span{font-size:18px;font-weight:900}
.price-top small{color:#72dced;border:1px solid #1c6579;border-radius:99px;padding:4px 8px}
.price{display:flex;align-items:flex-end;min-height:88px;margin:10px 0}
.price sup{font-size:18px;color:#a9d0d8;margin:0 5px 16px 0}
.price strong{font-size:52px;line-height:1;letter-spacing:-.05em}
.price>small{font-size:12px;color:#789faa;margin:0 0 8px 6px}
.price-card>p{min-height:50px;color:#9fc4cc;font-size:13px;line-height:1.75;margin:0 0 18px}
.price-card ul{list-style:none;padding:0;margin:0 0 24px;display:grid;gap:10px;color:#c5e0e5;font-size:13px}
.price-card li::before{content:"✓";color:var(--green);margin-right:8px}
.price-note{text-align:center;color:#78a5af;font-size:12px;margin:24px auto 0;max-width:880px}
.price-note a{margin-inline:4px;text-decoration:underline;text-underline-offset:3px}

.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,1fr);gap:12px;counter-reset:steps}
.steps li{display:flex;gap:15px;background:#071f2a;border:1px solid #174b5d;border-radius:15px;padding:22px}
.steps>li>span{color:#4ee5f7;font:900 12px/1.5 "Segoe UI",sans-serif}
.steps h3{margin:0 0 7px;font-size:16px}
.steps p{margin:0;color:#84abb4;font-size:12px;line-height:1.7}

.faq-section{padding-top:90px}
.faq-grid{display:grid;grid-template-columns:.75fr 1.25fr;gap:80px;align-items:start}
.sticky-heading{position:sticky;top:110px;margin:0}
.faq-list{display:grid;gap:10px}
details{background:#07232f;border:1px solid #174d5f;border-radius:13px;padding:0 18px}
summary{cursor:pointer;list-style:none;padding:19px 30px 19px 0;font-weight:800;position:relative}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:0;font-size:20px;color:var(--cyan);line-height:1}
details[open] summary::after{content:"−"}
details p{color:#93bac3;font-size:13px;line-height:1.85;margin:0;padding:0 24px 18px 0}

.final-cta{padding:36px 0 92px}
.final-inner{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:46px;background:
  radial-gradient(circle at 80% 20%,rgba(37,117,255,.26),transparent 18rem),
  linear-gradient(120deg,#0b4252,#082634);border:1px solid #26778b;border-radius:20px}
.final-inner h2{font-size:clamp(28px,4vw,42px);margin:10px 0 5px}
.final-inner p{margin:0;color:#9bc3cb}
.final-inner .button{min-width:max-content}

footer{border-top:1px solid #123f4e;background:#021018;padding:54px 0 30px}
.footer-grid{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:55px}
.footer-brand p{max-width:360px;color:#729aa4;font-size:13px;margin-top:18px}
.footer-grid>div:not(.footer-brand){display:flex;flex-direction:column;gap:8px}
.footer-grid>div>b{font-size:13px;margin-bottom:7px}
.footer-grid>div>a{color:#7faab4;font-size:12px}
.footer-grid>div>a:hover{color:#fff}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:28px;margin-top:36px;border-top:1px solid #123b49;color:#5e8790;font-size:11px}
.mobile-install{display:none}

@media(max-width:1050px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-copy{max-width:760px}
  .product-visual{max-width:680px;width:100%;margin:auto}
  .pricing-grid{grid-template-columns:repeat(2,1fr)}
  .price-card.popular{transform:none}
}
@media(max-width:820px){
  nav{display:none}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .proof-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .proof-grid div{border:0;padding:0}
  .steps{grid-template-columns:repeat(2,1fr)}
  .faq-grid{grid-template-columns:1fr;gap:30px}
  .sticky-heading{position:static}
  .footer-grid{grid-template-columns:2fr 1fr 1fr}
  .footer-grid>div:last-child{grid-column:2}
}
@media(max-width:600px){
  .container{width:min(100% - 28px,1180px)}
  .site-header{height:68px}
  .header-cta{display:none}
  .brand b{font-size:16px}
  .hero{padding:62px 0 50px}
  .hero h1{font-size:46px}
  .lead{font-size:16px}
  .hero-actions{align-items:stretch;flex-direction:column}
  .button{width:100%}
  .microcopy{line-height:1.7}
  .trust-row{gap:9px 14px}
  .product-visual{min-height:390px}
  .window{transform:none}
  .window-body{grid-template-columns:90px 1fr}
  .window aside{padding:14px 7px}
  .dash{padding:14px}
  .metric-grid{gap:5px}
  .metric-grid div{padding:8px 6px}
  .metric-grid strong{font-size:16px}
  .dash-head small{display:none}
  .floating-card{display:none}
  .proof-grid{padding:23px 0}
  .proof-grid strong{font-size:15px}
  .section{padding:72px 0}
  .section-heading{margin-bottom:28px}
  .section-heading h2{font-size:34px}
  .feature-grid,.pricing-grid,.steps{grid-template-columns:1fr}
  .feature-card{min-height:205px}
  .price-card{min-height:auto}
  .price-card>p{min-height:auto}
  .final-inner{padding:28px;flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-brand{grid-column:1/-1}
  .footer-grid>div:last-child{grid-column:auto}
  .footer-bottom{flex-direction:column}
  .mobile-install{display:flex;position:fixed;z-index:60;left:12px;right:12px;bottom:10px;align-items:center;justify-content:center;gap:8px;background:linear-gradient(105deg,#08bed9,#316df4);color:#fff;border:1px solid rgba(255,255,255,.2);border-radius:12px;padding:13px 16px;font-weight:900;box-shadow:0 12px 34px rgba(0,0,0,.45)}
  footer{padding-bottom:88px}
}
@media(prefers-reduced-motion:reduce){
  *{scroll-behavior:auto!important;transition:none!important}
}

.doc-page{background:radial-gradient(circle at 80% 0,rgba(20,112,145,.22),transparent 30rem),var(--bg)}
.doc-shell{padding:70px 0 90px;max-width:940px}
.doc-title{margin-bottom:28px}
.doc-title>a{font-size:13px;color:#79cddb}
.doc-title h1{font-size:clamp(38px,5vw,58px);letter-spacing:-.04em;margin:18px 0 8px}
.doc-title>p{margin:0;color:var(--muted);font-size:16px}
.doc-card{background:linear-gradient(145deg,rgba(9,44,57,.98),rgba(5,27,37,.98));border:1px solid #19566a;border-radius:18px;padding:clamp(24px,5vw,48px);box-shadow:0 24px 70px rgba(0,0,0,.2)}
.doc-card h2{color:#55e7f8;font-size:22px;margin:36px 0 10px;padding-top:8px}
.doc-card h2:first-of-type{margin-top:20px}
.doc-card p,.doc-card li{color:#b4d2d8;font-size:14px;line-height:1.9}
.doc-card ul,.doc-card ol{padding-left:22px}
.doc-meta{border:1px solid #1a586b;border-radius:9px;background:#082633;padding:10px 13px;color:#7faab4!important;font-size:12px!important}
.doc-nav{display:flex;justify-content:center;flex-wrap:wrap;gap:16px;margin-top:25px}
.doc-nav a{font-size:12px;color:#80acb5}
.doc-nav a:hover{color:#fff}
.doc-footer{background:#021018;border-top:1px solid #123f4e;padding:0 0 28px}
.doc-footer .footer-bottom{margin-top:0}
.doc-price-list{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0}
.doc-price-list div{display:grid;gap:3px;background:#061f2a;border:1px solid #19556a;border-radius:12px;padding:18px}
.doc-price-list b{font-size:15px}
.doc-price-list span{font-size:30px;font-weight:900;color:#fff}
.doc-price-list small{color:#7fb2bc}
.support-actions{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:26px}
@media(max-width:600px){
  .doc-shell{padding:48px 0 70px}
  .doc-card{padding:22px}
  .doc-price-list{grid-template-columns:1fr}
  .support-actions{flex-direction:column}
}