:root{
  --navy:#07182e;--navy-2:#0d2442;--blue:#2f7cf6;--cyan:#00b7a8;--ink:#10223d;
  --muted:#64748b;--line:#dbe5f0;--soft:#f3f7fb;--white:#fff;--warn:#fff7e6;
  --shadow:0 18px 60px rgba(14,35,64,.12);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:#fff;line-height:1.65}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1180px,calc(100% - 40px));margin:auto}
.site-header{position:sticky;top:0;z-index:40;background:rgba(7,24,46,.92);backdrop-filter:blur(16px);border-bottom:1px solid rgba(255,255,255,.08)}
.header-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px;color:#fff;font-weight:800;letter-spacing:.02em}
.brand img{width:38px;height:38px;border-radius:11px}
.brand small{display:block;font-weight:500;color:#9fb1c9;font-size:11px;letter-spacing:.08em}
.nav{display:flex;align-items:center;gap:26px;color:#c9d5e5;font-size:14px}
.nav a:hover,.nav a.active{color:#fff}
.header-actions{display:flex;gap:10px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:10px;padding:11px 18px;font-weight:700;border:1px solid transparent;cursor:pointer;transition:.2s;font-size:14px}
.btn-primary{background:linear-gradient(135deg,var(--blue),#5a8df7);color:#fff;box-shadow:0 10px 24px rgba(47,124,246,.25)}
.btn-primary:hover{transform:translateY(-1px)}
.btn-secondary{border-color:#b9c8dc;background:#fff;color:var(--ink)}
.btn-ghost{border-color:rgba(255,255,255,.2);color:#fff;background:rgba(255,255,255,.04)}
.btn-disabled{background:#e7edf4;color:#8695a8;cursor:not-allowed;border-color:#d7e0ea}
.mobile-toggle{display:none;background:none;border:0;color:#fff;font-size:26px}
.hero{background:
  radial-gradient(circle at 80% 18%,rgba(0,183,168,.19),transparent 30%),
  radial-gradient(circle at 15% 20%,rgba(47,124,246,.25),transparent 34%),
  linear-gradient(135deg,#061426,#0c2748 65%,#0a3150);
  color:#fff;padding:86px 0 72px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 10px;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);border-radius:999px;color:#bcd0e7;font-size:13px}
.hero h1{font-size:52px;line-height:1.12;margin:22px 0 20px;letter-spacing:-.04em}
.hero h1 span{background:linear-gradient(90deg,#8fc1ff,#5df0dc);-webkit-background-clip:text;color:transparent}
.hero p{font-size:18px;color:#c8d5e5;max-width:630px;margin:0 0 28px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-note{margin-top:18px;color:#8fa7c1;font-size:13px}
.app-window{position:relative;border-radius:18px;background:#fff;padding:9px;box-shadow:0 28px 90px rgba(0,0,0,.35);transform:perspective(1200px) rotateY(-4deg) rotateX(1deg)}
.app-window:after{content:"";position:absolute;inset:auto 9% -26px 9%;height:35px;background:rgba(0,183,168,.28);filter:blur(35px)}
.window-bar{height:32px;background:#f3f6fa;border-radius:11px 11px 4px 4px;display:flex;align-items:center;padding:0 12px;gap:6px}
.dot{width:9px;height:9px;border-radius:50%;background:#d0d8e3}
.app-window img{border-radius:4px 4px 12px 12px;aspect-ratio:16/9;object-fit:cover;object-position:top}
.stats{margin-top:-1px;background:#fff;border-bottom:1px solid var(--line)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:28px 24px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat strong{display:block;font-size:25px;color:var(--navy)}
.stat span{font-size:13px;color:var(--muted)}
.section{padding:86px 0}
.section-soft{background:var(--soft)}
.section-dark{background:var(--navy);color:#fff}
.section-head{max-width:760px;margin-bottom:38px}
.section-head.center{text-align:center;margin-left:auto;margin-right:auto}
.kicker{color:var(--blue);font-weight:800;font-size:13px;letter-spacing:.12em;text-transform:uppercase}
.section h2{font-size:38px;line-height:1.25;margin:10px 0 12px;letter-spacing:-.02em}
.section-head p{color:var(--muted);margin:0;font-size:17px}
.section-dark .section-head p{color:#aebfd2}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feature-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:25px;box-shadow:0 8px 24px rgba(15,40,70,.04)}
.feature-card .icon{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:#eaf2ff;color:var(--blue);font-weight:900;margin-bottom:18px}
.feature-card h3{margin:0 0 7px;font-size:18px}
.feature-card p{margin:0;color:var(--muted);font-size:14px}
.product-row{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:center;margin-top:62px}
.product-row.reverse .product-copy{order:2}
.product-row.reverse .product-visual{order:1}
.product-copy h3{font-size:30px;margin:0 0 14px}
.product-copy p{color:var(--muted)}
.checks{display:grid;gap:11px;margin:24px 0 0;padding:0;list-style:none}
.checks li{position:relative;padding-left:28px;color:#33465f}
.checks li:before{content:"✓";position:absolute;left:0;top:0;color:var(--cyan);font-weight:900}
.product-visual{background:#fff;border-radius:18px;padding:10px;box-shadow:var(--shadow);border:1px solid var(--line)}
.product-visual img{border-radius:11px;aspect-ratio:16/9;object-fit:cover;object-position:top}
.download-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.download-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px}
.download-card .platform{font-size:36px}
.download-card h3{margin:10px 0 6px}
.download-card p{color:var(--muted);font-size:14px;min-height:46px}
.status{display:inline-flex;padding:5px 9px;border-radius:999px;background:var(--warn);color:#9a5b00;font-size:12px;font-weight:800;margin-bottom:18px}
.notice{border-left:4px solid var(--blue);background:#edf4ff;padding:17px 20px;border-radius:4px 12px 12px 4px;color:#385171}
.custom-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:36px}
.service-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.service-item{padding:18px;border:1px solid rgba(255,255,255,.12);border-radius:14px;background:rgba(255,255,255,.04)}
.service-item strong{display:block;margin-bottom:5px}
.service-item span{color:#aebfd2;font-size:14px}
.contact-panel{background:#fff;color:var(--ink);border-radius:18px;padding:30px}
.contact-panel h3{margin-top:0}
.contact-panel p{color:var(--muted)}
.about-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:start}
.company-card{background:linear-gradient(145deg,var(--navy),#123a66);color:#fff;border-radius:20px;padding:32px;min-height:310px}
.company-card .logo-large{width:64px;height:64px;border-radius:18px;margin-bottom:24px}
.company-card h3{font-size:26px;margin:0 0 8px}
.company-card p{color:#b8c9dc}
.company-copy p{color:#566a82;font-size:16px}
.values{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:25px}
.value{background:var(--soft);border-radius:13px;padding:18px}
.value strong{display:block}
.value span{font-size:13px;color:var(--muted)}
.cta{background:linear-gradient(135deg,#eaf3ff,#e8fffb);border:1px solid #cfe3f5;border-radius:22px;padding:44px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.cta h2{margin:0 0 8px;font-size:30px}
.cta p{margin:0;color:var(--muted)}
.site-footer{background:#061426;color:#9fb0c4;padding:46px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,.7fr);gap:36px}
.footer-grid h4{color:#fff;margin:0 0 12px}
.footer-grid a{display:block;margin:8px 0;font-size:14px}
.footer-brand p{max-width:460px}
.copyright{border-top:1px solid rgba(255,255,255,.09);margin-top:34px;padding-top:20px;font-size:12px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.page-hero{background:linear-gradient(135deg,#07182e,#123c6c);color:#fff;padding:70px 0}
.page-hero h1{font-size:42px;margin:0 0 10px}
.page-hero p{color:#b9c9dc;max-width:720px}
.content{padding:68px 0}
.prose{max-width:900px}
.prose h2{font-size:28px;margin-top:42px}
.prose h3{font-size:20px;margin-top:28px}
.prose p,.prose li{color:#4d627a}
.prose ul{padding-left:20px}
.table-wrap{overflow:auto}
.table{width:100%;border-collapse:collapse;margin:20px 0}
.table th,.table td{border:1px solid var(--line);padding:13px;text-align:left;vertical-align:top}
.table th{background:var(--soft)}
.release-card{border:1px solid var(--line);border-radius:16px;padding:24px;margin-bottom:18px}
.release-card h3{margin-top:0}
.badge{display:inline-block;background:#eaf2ff;color:var(--blue);padding:4px 8px;border-radius:7px;font-size:12px;font-weight:800}
@media(max-width:940px){
  .nav{display:none}.nav.open{display:flex;position:absolute;top:72px;left:0;right:0;background:var(--navy);padding:18px 24px;flex-direction:column;align-items:flex-start}
  .mobile-toggle{display:block}.header-actions .btn-ghost{display:none}
  .hero-grid,.product-row,.custom-grid,.about-grid{grid-template-columns:1fr}
  .hero h1{font-size:42px}.app-window{transform:none}
  .feature-grid,.download-grid{grid-template-columns:1fr 1fr}
  .product-row.reverse .product-copy,.product-row.reverse .product-visual{order:initial}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  .container{width:min(100% - 24px,1180px)}
  .hero{padding:62px 0}.hero h1{font-size:36px}
  .stats-grid,.feature-grid,.download-grid,.service-list,.values{grid-template-columns:1fr}
  .stat{border-right:0;border-bottom:1px solid var(--line)}
  .section{padding:62px 0}.section h2{font-size:31px}
  .cta{display:block;padding:30px}.cta .btn{margin-top:20px}
  .footer-grid{grid-template-columns:1fr}
}
/* V1.1 account pages */
.auth-shell{min-height:calc(100vh - 72px);background:radial-gradient(circle at 15% 10%,rgba(47,124,246,.18),transparent 33%),radial-gradient(circle at 90% 20%,rgba(0,183,168,.13),transparent 30%),var(--soft);padding:64px 0}
.auth-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:34px;align-items:start}.auth-intro{padding:38px 20px 20px 0}.auth-intro h1{font-size:42px;line-height:1.2;margin:12px 0}.auth-intro p{color:var(--muted);font-size:17px}.auth-points{display:grid;gap:12px;margin-top:26px}.auth-point{display:flex;gap:12px;align-items:flex-start;color:#425770}.auth-point i{width:26px;height:26px;border-radius:8px;background:#e4efff;color:var(--blue);font-style:normal;display:grid;place-items:center;font-weight:800;flex:0 0 auto}
.auth-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:34px;box-shadow:var(--shadow);max-width:590px;width:100%;justify-self:end}.auth-card h2{margin:0 0 6px;font-size:28px}.auth-card>.sub{margin:0 0 24px;color:var(--muted)}.form-field{margin-bottom:16px}.form-field label{display:block;font-weight:700;font-size:14px;margin-bottom:7px}.form-field input{width:100%;border:1px solid #cbd8e7;border-radius:10px;padding:12px 13px;font:inherit;outline:none;background:#fff}.form-field input:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(47,124,246,.12)}.form-check{display:flex;gap:9px;align-items:flex-start;color:var(--muted);font-size:13px;margin:12px 0 20px}.form-check input{margin-top:4px}.form-check a,.auth-links a{color:var(--blue)}.auth-card .btn{width:100%}.auth-links{display:flex;justify-content:space-between;gap:12px;margin-top:18px;font-size:14px}.form-message{display:none;margin:0 0 16px;padding:11px 13px;border-radius:9px;font-size:14px}.form-message.show{display:block}.form-message.error{background:#fff1f2;color:#9f1239;border:1px solid #fecdd3}.form-message.success{background:#ecfdf5;color:#065f46;border:1px solid #a7f3d0}
.account-layout{display:grid;grid-template-columns:260px 1fr;gap:24px}.account-side,.account-panel{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px}.account-side h2{font-size:20px;margin:0 0 4px}.account-side p{font-size:13px;color:var(--muted);overflow-wrap:anywhere}.account-nav{display:grid;gap:6px;margin-top:22px}.account-nav a{padding:10px 12px;border-radius:9px;color:#445b76}.account-nav a.active{background:#eaf2ff;color:var(--blue);font-weight:800}.account-panel h1{margin:0 0 8px;font-size:28px}.account-panel .lead{color:var(--muted);margin:0 0 24px}.account-kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:26px}.account-kpi{background:var(--soft);border-radius:12px;padding:16px}.account-kpi span{display:block;font-size:12px;color:var(--muted)}.account-kpi strong{display:block;margin-top:6px}.device-list{display:grid;gap:10px}.device-row{display:grid;grid-template-columns:1fr auto;gap:16px;align-items:center;border:1px solid var(--line);border-radius:12px;padding:15px}.device-row h3{font-size:15px;margin:0 0 4px}.device-row p{font-size:12px;color:var(--muted);margin:0}.danger-zone{margin-top:34px;border:1px solid #fecaca;background:#fff7f7;border-radius:12px;padding:18px}.danger-zone h3{color:#991b1b;margin-top:0}.btn-danger{background:#b91c1c;color:#fff}.inline-form{display:grid;grid-template-columns:1fr 1fr auto;gap:10px;align-items:end}.small-note{font-size:12px;color:var(--muted)}
@media(max-width:940px){.auth-grid,.account-layout{grid-template-columns:1fr}.auth-card{justify-self:stretch;max-width:none}.auth-intro{padding:0}.account-kpis{grid-template-columns:1fr 1fr}.inline-form{grid-template-columns:1fr}}
@media(max-width:640px){.auth-shell{padding:34px 0}.auth-intro h1{font-size:34px}.auth-card{padding:24px}.account-kpis{grid-template-columns:1fr}.auth-links{display:grid}.header-actions [data-auth-login]{display:none}}