:root{
  color-scheme:light;
  --bg:#f5f5f7;
  --surface:#ffffff;
  --surface-soft:#fbfbfd;
  --surface-strong:#ffffff;
  --line:rgba(0,0,0,.08);
  --line-bright:rgba(0,113,227,.22);
  --text:#1d1d1f;
  --muted:#6e6e73;
  --blue:#0071e3;
  --blue-bright:#2997ff;
  --cyan:#00a8c8;
  --green:#34c759;
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
body{
  margin:0;min-width:320px;color:var(--text);
  background:
    radial-gradient(circle at 10% -4%,rgba(41,151,255,.09),transparent 32rem),
    radial-gradient(circle at 92% 2%,rgba(0,168,200,.07),transparent 28rem),
    var(--bg);
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Segoe UI","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  line-height:1.6;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
button,a{-webkit-tap-highlight-color:transparent}
.shell{width:min(calc(100% - 40px),var(--max));margin:0 auto}
.site-header{
  position:sticky;top:0;z-index:20;
  border-bottom:1px solid rgba(0,0,0,.06);
  background:rgba(255,255,255,.78);
  backdrop-filter:saturate(180%) blur(20px);
}
.nav{height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:inline-flex;align-items:center;gap:11px;font-size:16px;font-weight:700;letter-spacing:-.01em}
.brand-mark{
  width:36px;height:36px;display:block;flex:0 0 auto;
  border-radius:11px;overflow:hidden;
  box-shadow:0 5px 14px rgba(0,113,227,.14);
}
.brand-mark img{display:block;width:100%;height:100%}
.brand-copy{display:grid;line-height:1.05;gap:2px}
.brand-copy strong{font-size:15px;letter-spacing:-.02em}
.brand-copy small{font-size:10px;font-weight:600;color:#86868b;letter-spacing:.05em}
.nav-links{display:flex;align-items:center;gap:26px;color:#515154;font-size:13px}
.nav-links a{transition:color .2s ease}.nav-links a:hover{color:var(--blue)}

.button{
  min-height:44px;padding:0 18px;display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid rgba(0,0,0,.08);border-radius:999px;
  background:#fff;color:#1d1d1f;font-size:14px;font-weight:650;
  box-shadow:0 1px 2px rgba(0,0,0,.03);
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease;
}
.button:hover{transform:translateY(-1px);background:#fafafa;border-color:rgba(0,0,0,.13);box-shadow:0 6px 18px rgba(0,0,0,.06)}
.button:active{transform:scale(.985)}
.button.primary{border-color:var(--blue);background:var(--blue);color:#fff;box-shadow:none}
.button.primary:hover{background:#0077ed;border-color:#0077ed}
.button.maintenance,.button.maintenance:hover{border-color:#e1e1e6;background:#e8e8ed;color:#86868b;box-shadow:none;transform:none;cursor:not-allowed;pointer-events:none;user-select:none}
.button.compact{min-height:38px;padding:0 15px}
.button svg{width:17px;height:17px}

.hero{position:relative;padding:112px 0 92px;overflow:hidden}
.hero::before{
  content:"";position:absolute;width:520px;height:520px;right:max(-190px,calc((100vw - var(--max))/2 - 260px));top:-160px;
  border-radius:50%;background:radial-gradient(circle,rgba(0,113,227,.09),rgba(0,113,227,0) 68%);
}
.hero-grid{position:relative;display:grid;grid-template-columns:minmax(0,1.08fr) minmax(360px,.92fr);align-items:center;gap:72px}
.eyebrow{margin:0 0 18px;color:#6e6e73;font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase}
h1{margin:0;max-width:780px;font-size:clamp(46px,6vw,78px);line-height:1.03;letter-spacing:-.05em;font-weight:760}
.gradient-text{color:var(--text);background:none}
.hero-copy{max-width:670px;margin:26px 0 0;color:#6e6e73;font-size:clamp(17px,1.7vw,20px);line-height:1.75}
.hero-actions{margin-top:34px;display:flex;flex-wrap:wrap;gap:12px}
.meta-row{margin-top:22px;display:flex;flex-wrap:wrap;gap:18px;color:#86868b;font-size:12px}
.meta-row span{display:inline-flex;align-items:center;gap:7px}
.meta-row span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--green)}

.product-window,.portal-card,.info-panel{
  border:1px solid var(--line);border-radius:28px;background:rgba(255,255,255,.92);
  box-shadow:0 20px 60px rgba(0,0,0,.07),0 2px 10px rgba(0,0,0,.03);
}
.product-window{position:relative;padding:16px}
.window-bar{height:34px;display:flex;align-items:center;gap:7px;padding:0 4px 12px}
.window-dot{width:8px;height:8px;border-radius:50%;background:#d2d2d7}.window-dot.active{background:#34c759}
.mock-body{border:1px solid var(--line);border-radius:16px;padding:22px;background:#fafafa}
.mock-tabs{display:grid;grid-template-columns:1fr 1fr;gap:8px}.mock-tab{height:36px;border-radius:9px;background:#ececf0}.mock-tab.active{background:#dceeff}
.mock-input{margin-top:17px;height:48px;display:grid;grid-template-columns:1fr 64px;gap:9px}
.mock-input::before,.mock-input::after{content:"";border-radius:9px;background:#f1f1f4;border:1px solid var(--line)}
.mock-input::after{background:var(--blue);border-color:var(--blue)}
.mock-list{margin-top:18px;display:grid;gap:9px}.mock-list i{height:54px;display:block;border-radius:10px;background:#f4f4f6;border:1px solid var(--line)}
.mock-list i:first-child{border-color:rgba(0,113,227,.2);background:#eef6ff}
.floating-note{position:absolute;right:-22px;bottom:-28px;padding:16px 18px;border:1px solid rgba(52,199,89,.16);border-radius:14px;background:rgba(255,255,255,.9);backdrop-filter:blur(14px);box-shadow:0 16px 40px rgba(0,0,0,.08)}
.floating-note strong{display:block;font-size:14px}.floating-note span{color:#86868b;font-size:12px}

.section{padding:96px 0}.section.compact{padding:72px 0}
.section-head{display:grid;grid-template-columns:1fr minmax(300px,.65fr);align-items:end;gap:40px;margin-bottom:40px}
.kicker{margin:0 0 10px;color:#86868b;font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase}
h2{margin:0;font-size:clamp(32px,4vw,50px);line-height:1.1;letter-spacing:-.04em;font-weight:720}
.section-head>p{margin:0;color:var(--muted)}

.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feature-card{
  min-height:230px;padding:30px;border:1px solid var(--line);border-radius:24px;background:#fff;
  box-shadow:0 8px 30px rgba(0,0,0,.04);
  transition:transform .2s ease,box-shadow .2s ease;
}
.feature-card:hover{transform:translateY(-3px);box-shadow:0 16px 38px rgba(0,0,0,.07)}
.icon-box{width:46px;height:46px;display:grid;place-items:center;border-radius:14px;background:#f0f7ff;color:var(--blue)}
.icon-box svg{width:22px;height:22px}
.feature-card h3{margin:24px 0 9px;font-size:19px;letter-spacing:-.02em}
.feature-card p{margin:0;color:#6e6e73;font-size:14px}

.download-panel{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.download-card{padding:32px;border:1px solid var(--line);border-radius:24px;background:#fff;box-shadow:0 8px 30px rgba(0,0,0,.04)}
.download-top{display:flex;align-items:flex-start;justify-content:space-between;gap:20px}
.platform{display:flex;align-items:center;gap:14px}.platform h3{margin:0;font-size:20px}.platform p{margin:2px 0 0;color:#86868b;font-size:12px}
.version{padding:5px 9px;border-radius:999px;color:var(--blue);background:#edf6ff;font-size:11px}
.download-card>p{min-height:50px;margin:22px 0;color:#6e6e73;font-size:14px}.download-card .button{width:100%}

.notice,.product-note{
  padding:26px 28px;border:1px solid rgba(191,120,0,.14);border-radius:20px;background:#fff8e8;color:#7a5a16;
}
.notice h3{margin:0 0 5px;font-size:17px}.notice p{margin:0;color:#7a6a47;font-size:14px}

.faq{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.faq details{border:1px solid var(--line);border-radius:16px;padding:0 20px;background:#fff}
.faq summary{padding:19px 0;cursor:pointer;font-weight:650;list-style:none}.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--blue);font-size:20px;font-weight:400}.faq details[open] summary::after{content:"−"}
.faq p{margin:-4px 0 20px;color:#6e6e73;font-size:13px}

.cta{
  margin:30px auto 92px;padding:46px;display:grid;grid-template-columns:1fr auto;align-items:center;gap:36px;
  border:1px solid var(--line);border-radius:28px;background:#fff;box-shadow:0 12px 40px rgba(0,0,0,.05);
}
.cta h2{font-size:clamp(28px,3vw,40px)}.cta p{margin:8px 0 0;color:#6e6e73}.cta-actions{display:flex;gap:10px}

.site-footer{border-top:1px solid rgba(0,0,0,.07);padding:34px 0 40px;color:#86868b;font-size:12px;background:#f5f5f7}
.footer-grid{display:flex;align-items:center;justify-content:space-between;gap:24px}.footer-links{display:flex;flex-wrap:wrap;gap:20px}
.footer-links a:hover{color:#1d1d1f}.disclaimer{margin:17px 0 0;max-width:760px;color:#9b9ba0}

.legal-main{min-height:calc(100vh - 200px);padding:72px 0 90px}
.legal-card{width:min(100%,860px);margin:0 auto;padding:44px;border:1px solid var(--line);border-radius:28px;background:#fff;box-shadow:0 10px 36px rgba(0,0,0,.05)}
.legal-card h1{font-size:clamp(34px,5vw,52px)}.legal-meta{margin:12px 0 34px;color:#86868b;font-size:13px}
.legal-card h2{margin-top:32px;font-size:21px;letter-spacing:-.02em}.legal-card p,.legal-card li{color:#6e6e73;font-size:14px}
.legal-card ul{padding-left:22px}.legal-card a{color:var(--blue)}

@media(max-width:900px){
  .nav-links a:not(.button){display:none}.hero{padding-top:76px}.hero-grid{grid-template-columns:1fr;gap:58px}
  .section-head{grid-template-columns:1fr;gap:14px}.feature-grid{grid-template-columns:1fr}.download-panel{grid-template-columns:1fr}
  .cta{grid-template-columns:1fr}.cta-actions{flex-wrap:wrap}
}
@media(max-width:620px){
  .shell{width:min(calc(100% - 28px),var(--max))}.nav{height:62px}.nav .button{display:none}.hero{padding:64px 0 58px}
  h1{font-size:clamp(40px,14vw,58px)}.hero-copy{font-size:16px}.hero-actions .button{width:100%}.section{padding:72px 0}
  .faq{grid-template-columns:1fr}.cta{margin-bottom:68px;padding:30px}.cta-actions .button{width:100%}
  .footer-grid{align-items:flex-start;flex-direction:column}.legal-main{padding-top:42px}.legal-card{padding:28px 22px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}*,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}
}