:root{--bg:#edf2f8;--card:#fff;--ink:#071223;--muted:#637083;--line:#cfdae8;--navy:#071223;--blue:#0f4cff;--cyan:#02c2ff;--soft:#f6f9fd;--green:#0c9a70;--shadow:0 24px 70px rgba(7,18,35,.12);--radius:26px}
*{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;background:var(--bg);color:var(--ink);line-height:1.72}a{text-decoration:none;color:inherit}img{display:block;max-width:100%;height:auto}button{font:inherit}.container{width:min(1220px,calc(100% - 40px));margin:auto}
.frame-top{position:sticky;top:0;z-index:80;background:rgba(237,242,248,.9);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.nav-frame{min-height:78px;display:flex;align-items:center;gap:20px}.brand-block{display:flex;align-items:center;gap:12px}.brand-block img{width:42px;height:42px}.brand-block strong{display:block;font-size:16px}.brand-block em{display:block;font-size:11px;color:var(--muted);font-style:normal;letter-spacing:.14em}.nav-menu{display:flex;gap:16px;margin-left:auto}.nav-menu a{font-size:14px;font-weight:800;color:#26384a}.nav-menu a.on,.nav-menu a:hover{color:var(--blue)}.nav-buttons{display:flex;gap:10px}.btn{border:1px solid transparent;border-radius:999px;padding:12px 18px;font-weight:900;cursor:pointer;display:inline-flex;align-items:center;justify-content:center}.btn-accent{background:linear-gradient(135deg,var(--blue),var(--cyan));color:#fff;box-shadow:0 14px 34px rgba(15,76,255,.22)}.btn-dark{background:var(--navy);color:#fff}.btn-outline{background:#fff;border-color:var(--line);color:var(--navy)}.menu-toggle{display:none;background:transparent;border:0;flex-direction:column;gap:5px;margin-left:auto}.menu-toggle span{width:24px;height:2px;background:var(--navy)}
.breadcrumb{display:flex;gap:8px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:18px}.breadcrumb a{color:var(--blue)}.eyebrow{display:inline-flex;color:var(--blue);font-size:12px;letter-spacing:.18em;text-transform:uppercase;font-weight:950}
.hero-prism{padding:62px 0 24px;background:linear-gradient(135deg,#f8fbff 0%,#dfeaf8 100%)}.hero-prism-grid{display:grid;grid-template-columns:120px 1.1fr .9fr;gap:22px;align-items:stretch}.hero-ledger,.hero-main-copy,.hero-product-board,.shortcuts a,.shortcuts button,.device-item,.text-grid article,.sub-device,.compare-table,.process-strip article,.auth-grid article,.learning-grid article,.support-grid article,.qa-list details,.links-grid article{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.hero-ledger{display:flex;flex-direction:column;justify-content:space-between;align-items:center;text-align:center;padding:22px}.hero-ledger span{font-size:46px;font-weight:950;color:var(--blue)}.hero-ledger strong{writing-mode:vertical-rl;letter-spacing:.14em;font-size:13px}.hero-ledger small{color:var(--muted);font-size:12px}.hero-main-copy{padding:38px;display:flex;flex-direction:column;justify-content:center}.hero-main-copy h1,.title-stack h2,.section-head h2,.text-grid h2,.subpage h1{font-size:clamp(38px,5.5vw,74px);line-height:.98;letter-spacing:-.06em;margin:14px 0;color:var(--navy)}.hero-main-copy p,.architecture-copy p,.section-head p,.device-info p,.text-grid p,.subpage p,.process-strip p,.auth-grid p,.learning-grid p,.support-grid p,.qa-list p,.links-grid p{margin:0;color:var(--muted)}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.hero-product-board{position:relative;display:grid;place-items:center;min-height:560px;overflow:hidden;background:radial-gradient(circle at center,rgba(2,194,255,.18),transparent 42%),#fff}.main-device{max-width:68%;z-index:2}.orbit{position:absolute;background:#fff;border:1px solid var(--line);border-radius:22px;padding:12px;box-shadow:var(--shadow);width:118px;aspect-ratio:1/1;object-fit:contain}.orbit.one{right:20px;top:24px}.orbit.two{right:30px;bottom:42px}.orbit.three{left:24px;bottom:30px}
.section{padding:72px 0}.shortcut-section{padding-top:36px}.shortcuts{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}.shortcuts a,.shortcuts button{padding:18px;text-align:left;cursor:pointer}.shortcuts i{font-style:normal;color:var(--blue);font-weight:950}.shortcuts b{display:block;font-size:18px;margin:6px 0}.shortcuts span{font-size:13px;color:var(--muted)}
.architecture-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:30px;align-items:start}.device-wall{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}.device-item{padding:20px;display:grid;grid-template-columns:190px 1fr;gap:18px;align-items:center}.device-item.item-stax{grid-row:span 3;grid-template-columns:1fr}.device-visual{background:var(--soft);border:1px solid var(--line);border-radius:22px;padding:14px}.device-visual img{width:100%;aspect-ratio:1/1;object-fit:contain}.device-info span{font-size:12px;color:var(--blue);font-weight:950;letter-spacing:.12em}.device-info h3{font-size:30px;margin:8px 0;letter-spacing:-.04em}.chips{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}.chips b{font-size:13px;border:1px solid var(--line);background:var(--soft);border-radius:999px;padding:7px 10px}.text-system{background:#fff}.text-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.text-grid article{padding:22px}.text-grid h2{font-size:26px}
.subpage{padding:64px 0;background:linear-gradient(180deg,#f8fbff 0%,#edf2f8 100%)}.subpage-grid{display:grid;grid-template-columns:1fr .9fr;gap:28px;align-items:center}.sub-device{padding:26px;display:grid;place-items:center;min-height:360px}.sub-device img{max-height:320px;object-fit:contain}.logo-card img{max-height:180px}.compare-table{overflow:hidden}.compare-row{display:grid;grid-template-columns:1.15fr 1.05fr 1.6fr 1.15fr 1.3fr .7fr;gap:14px;align-items:center;padding:16px 20px;border-bottom:1px solid var(--line)}.compare-row:last-child{border-bottom:0}.compare-row.head{background:var(--navy);color:#fff;font-weight:900}.mini{border:1px solid var(--line);background:#fff;color:var(--blue);border-radius:999px;padding:9px 12px;font-weight:900;cursor:pointer}
.process-strip{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.process-strip article,.auth-grid article,.learning-grid article,.support-grid article,.links-grid article{padding:22px}.process-strip span,.learning-grid em{display:grid;place-items:center;width:44px;height:44px;border-radius:14px;background:var(--navy);color:#fff;font-weight:950;font-style:normal}.process-strip h2,.learning-grid h2,.support-grid h2,.links-grid h2{font-size:24px;line-height:1.1;margin:16px 0 8px}.auth-grid,.support-grid,.links-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.auth-grid b{font-size:23px}.learning-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.qa-list{display:grid;gap:12px}.qa-list details{padding:20px 22px}.qa-list summary{font-size:22px;font-weight:900;cursor:pointer;list-style:none}.qa-list summary::-webkit-details-marker{display:none}.qa-list p{margin-top:10px}.links-grid span{font-size:12px;color:var(--blue);font-weight:950;letter-spacing:.12em}
.footer{background:var(--navy);color:#fff;padding:32px 0 58px}.footer-grid{display:flex;justify-content:space-between;gap:26px}.footer-name{display:flex;gap:14px;align-items:flex-start}.footer-name img{border-radius:14px}.footer-name strong{font-size:22px}.footer-name p{max-width:650px;margin:8px 0 0;color:#dbe8ff}.footer-links{display:flex;flex-direction:column;gap:8px;align-items:flex-end}.footer-btn{border:1px solid rgba(255,255,255,.25);background:rgba(255,255,255,.1);color:#fff;border-radius:999px;padding:10px 14px;font-weight:900;cursor:pointer}.contact-modal{display:none;position:fixed;inset:0;z-index:999;align-items:center;justify-content:center}.contact-modal.open{display:flex}.modal-shade{position:absolute;inset:0;background:rgba(7,18,35,.58);backdrop-filter:blur(8px)}.modal-window{position:relative;z-index:2;width:min(430px,calc(100% - 28px));background:#fff;border-radius:30px;padding:28px;text-align:center;box-shadow:0 40px 100px rgba(0,0,0,.28)}.modal-close{position:absolute;right:16px;top:10px;border:0;background:transparent;font-size:30px;cursor:pointer}.modal-kicker{color:var(--blue);font-size:12px;letter-spacing:.16em;font-weight:950}.modal-window h2{margin:6px 0}.modal-window p{margin:0 0 16px;color:var(--muted)}.qr-wrap{border:1px solid var(--line);border-radius:22px;padding:10px}.qr-wrap img{width:100%;border-radius:14px}.modal-actions{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:16px}.modal-actions a{padding:10px 14px;background:var(--soft);border-radius:999px}.floating-contact{position:fixed;right:18px;bottom:18px;z-index:100;border:0;background:linear-gradient(135deg,var(--blue),var(--cyan));color:#fff;border-radius:999px;padding:14px 18px;font-weight:900;box-shadow:0 15px 34px rgba(15,76,255,.25);cursor:pointer}.lock{overflow:hidden}
@media(max-width:1180px){.nav-menu,.nav-buttons{display:none}.menu-toggle{display:flex}.hero-prism-grid,.architecture-grid,.subpage-grid{grid-template-columns:1fr}.hero-ledger{min-height:86px}.hero-ledger strong{writing-mode:horizontal-tb}.shortcuts,.text-grid,.process-strip{grid-template-columns:repeat(3,1fr)}.device-wall,.auth-grid,.learning-grid,.support-grid,.links-grid{grid-template-columns:repeat(2,1fr)}.device-item,.device-item.item-stax{grid-template-columns:1fr;grid-row:auto}.compare-row{grid-template-columns:1fr 1fr}.compare-row.head{display:none}.footer-grid{flex-direction:column}.footer-links{align-items:flex-start}}
@media(max-width:760px){.container{width:min(100%,calc(100% - 24px))}.hero-prism,.section,.subpage{padding:48px 0}.shortcuts,.text-grid,.process-strip,.device-wall,.auth-grid,.learning-grid,.support-grid,.links-grid{grid-template-columns:1fr}.hero-main-copy{padding:24px}.hero-main-copy h1,.title-stack h2,.section-head h2,.text-grid h2,.subpage h1{font-size:38px}.hero-product-board{min-height:400px}.orbit{position:static;margin:8px;width:100px}.compare-row{grid-template-columns:1fr}.footer-name{flex-direction:column}}


/* Official polished upgrade */
body{
  background:
    radial-gradient(circle at 78% 6%, rgba(15,76,255,.12), transparent 26%),
    radial-gradient(circle at 8% 18%, rgba(2,194,255,.10), transparent 22%),
    linear-gradient(180deg,#f7faff 0%,#eef3fa 42%,#f7faff 100%);
}
.frame-top{
  background:rgba(255,255,255,.78);
  box-shadow:0 10px 40px rgba(7,18,35,.06);
}
.nav-frame{min-height:82px}
.brand-block img{
  width:46px;height:46px;border-radius:16px;
  box-shadow:0 14px 34px rgba(7,18,35,.12);
}
.nav-menu a{
  position:relative;
  padding:8px 0;
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  transform:scaleX(0);
  transform-origin:center;
  background:linear-gradient(90deg,var(--blue),var(--cyan));
  transition:.22s ease;
}
.nav-menu a.on::after,.nav-menu a:hover::after{transform:scaleX(1)}
.hero-prism{
  padding:78px 0 38px;
  background:
    radial-gradient(circle at 72% 8%, rgba(2,194,255,.22), transparent 30%),
    linear-gradient(135deg,#ffffff 0%,#eef5ff 54%,#eaf1fb 100%);
}
.hero-prism-grid{
  grid-template-columns:96px 1.08fr .98fr;
}
.hero-ledger{
  border-color:rgba(15,76,255,.18);
  background:linear-gradient(180deg,#ffffff 0%,#edf5ff 100%);
}
.hero-main-copy{
  border:1px solid rgba(15,76,255,.16);
  background:linear-gradient(180deg,rgba(255,255,255,.96),rgba(255,255,255,.86));
  backdrop-filter:blur(18px);
}
.hero-main-copy h1{
  max-width:860px;
}
.hero-product-board{
  border:1px solid rgba(15,76,255,.16);
  background:
    radial-gradient(circle at center,rgba(15,76,255,.16),transparent 38%),
    linear-gradient(180deg,#ffffff 0%,#f4f8ff 100%);
}
.main-device{filter:drop-shadow(0 26px 34px rgba(7,18,35,.14))}
.orbit{transition:.22s ease}
.orbit:hover{transform:translateY(-4px)}
.shortcuts a,.shortcuts button,.device-item,.text-grid article,.sub-device,.compare-table,.process-strip article,.auth-grid article,.learning-grid article,.support-grid article,.qa-list details,.links-grid article{
  border-color:rgba(15,76,255,.13);
}
.shortcuts a:hover,.shortcuts button:hover,.device-item:hover,.text-grid article:hover{
  transform:translateY(-3px);
  box-shadow:0 30px 80px rgba(7,18,35,.14);
}
.shortcuts a,.shortcuts button,.device-item,.text-grid article{
  transition:.24s ease;
}
.architecture{
  background:linear-gradient(180deg,rgba(255,255,255,.65),rgba(237,242,248,.25));
}
.title-stack h2{
  background:linear-gradient(135deg,#071223 0%,#0f4cff 72%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.device-section{
  background:linear-gradient(180deg,#ffffff 0%,#f3f7fc 100%);
}
.device-wall{
  align-items:stretch;
}
.device-item.item-stax{
  background:
    radial-gradient(circle at 84% 16%,rgba(2,194,255,.14),transparent 26%),
    linear-gradient(180deg,#ffffff 0%,#f7fbff 100%);
}
.device-visual{
  background:
    radial-gradient(circle at center,rgba(15,76,255,.10),transparent 46%),
    #f8fbff;
}
.chips b{
  background:#ffffff;
}
.text-system{
  background:
    radial-gradient(circle at 10% 10%,rgba(15,76,255,.08),transparent 24%),
    linear-gradient(180deg,#071223 0%,#0b2344 100%);
}
.text-system .eyebrow{color:#82d7ff}
.text-system h2{color:#fff}
.text-system p{color:#d7e4f6}
.text-grid article{
  background:rgba(255,255,255,.08);
  border-color:rgba(255,255,255,.14);
  box-shadow:none;
  backdrop-filter:blur(18px);
}
.footer{
  background:linear-gradient(135deg,#061225 0%,#0b2b6f 72%,#0f4cff 100%);
}
.modal-window{
  border:1px solid rgba(15,76,255,.14);
}
.float-contact,.floating-contact{
  background:linear-gradient(135deg,#071223,#0f4cff 60%,#02c2ff);
}
@media(max-width:760px){
  .hero-prism-grid{grid-template-columns:1fr}
  .hero-ledger{min-height:74px}
}