:root{
  --ink:#172033;--muted:#667085;--line:#dfe4ee;--paper:#fff;--wash:#f4f6fb;
  --purple:#6747f5;--purple-dark:#5234df;--purple-soft:#eeeaff;--green:#179c65;
  font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  color:var(--ink);background:var(--wash);font-synthesis:none
}
*{box-sizing:border-box}
body{margin:0;min-height:100vh;background:
  radial-gradient(circle at 14% 10%,rgba(103,71,245,.12),transparent 28rem),
  linear-gradient(180deg,#f8f9fd 0,#f3f5fa 100%);line-height:1.6}
button,input{font:inherit}
button{cursor:pointer}
.page-shell{width:min(1160px,calc(100% - 40px));margin:0 auto;padding:72px 0 44px;
  display:grid;grid-template-columns:minmax(0,1.03fr) minmax(380px,.82fr);gap:28px}
.hero{padding:42px 44px 36px;border-radius:28px;color:#fff;min-height:500px;position:relative;overflow:hidden;
  background:linear-gradient(145deg,#171f35 0%,#272346 50%,#5133c6 132%);
  box-shadow:0 28px 70px rgba(27,32,53,.16)}
.hero:after{content:"";position:absolute;width:360px;height:360px;border-radius:50%;right:-160px;bottom:-170px;
  border:72px solid rgba(255,255,255,.08)}
.brand-row{display:flex;align-items:center;gap:14px;position:relative;z-index:1}
.brand-mark{display:grid;place-items:center;width:52px;height:52px;border-radius:16px;font-weight:900;font-size:28px;
  background:linear-gradient(135deg,#876fff,#6540f4);box-shadow:0 12px 30px rgba(63,36,183,.4)}
.eyebrow,.brand-note{margin:0}.eyebrow{font-size:12px;font-weight:800;letter-spacing:.2em;color:#c9bfff}
.brand-note{font-size:14px;color:#b8c0d8}
.hero-copy{position:relative;z-index:1;margin-top:72px;max-width:610px}
.status-chip{display:inline-flex;align-items:center;gap:9px;margin:0 0 22px;padding:7px 12px;border-radius:99px;
  color:#dfe9ff;background:rgba(255,255,255,.09);font-size:13px;font-weight:700}
.status-chip span{width:8px;height:8px;border-radius:50%;background:#44d29c;box-shadow:0 0 0 5px rgba(68,210,156,.14)}
h1{font-size:clamp(38px,5vw,64px);line-height:1.08;letter-spacing:-.04em;margin:0 0 24px}
.lead{font-size:18px;line-height:1.8;color:#d3d8e7;margin:0;max-width:570px}
.trust-list{list-style:none;padding:0;margin:62px 0 0;display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1}
.trust-list li{padding:8px 12px;border:1px solid rgba(255,255,255,.14);border-radius:10px;color:#cbd1e1;font-size:13px}
.download-card,.install-panel{background:rgba(255,255,255,.96);border:1px solid rgba(216,222,234,.85);
  border-radius:28px;box-shadow:0 24px 65px rgba(33,42,69,.09)}
.download-card{padding:38px 38px 32px;align-self:start}
.step-label{font-size:12px;font-weight:800;letter-spacing:.12em;color:var(--purple);text-transform:uppercase}
h2{font-size:26px;line-height:1.3;margin:8px 0 8px;letter-spacing:-.02em}
.helper{font-size:14px;color:var(--muted);margin:0 0 26px}
label{display:block;font-size:14px;font-weight:800;margin-bottom:8px}
.input-wrap{display:flex;align-items:center;border:1px solid #cfd6e4;border-radius:14px;background:#fff;
  box-shadow:0 1px 2px rgba(16,24,40,.03);transition:.18s ease}
.input-wrap:focus-within{border-color:var(--purple);box-shadow:0 0 0 4px rgba(103,71,245,.11)}
input{width:100%;min-width:0;padding:15px 14px;border:0;outline:0;background:transparent;color:var(--ink);
  font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:14px;letter-spacing:.015em}
input::placeholder{color:#9ba5b5}
.ghost-button{border:0;background:transparent;color:var(--purple);font-size:13px;font-weight:800;padding:13px}
.privacy-note{font-size:12px;color:#7a8494;margin:9px 2px 18px}
.primary-button{width:100%;min-height:54px;border:0;border-radius:14px;padding:13px 18px;color:#fff;font-weight:800;
  background:linear-gradient(135deg,#7252fa,#5e3aea);box-shadow:0 12px 28px rgba(103,71,245,.24);transition:.18s ease}
.primary-button:hover{background:linear-gradient(135deg,#6847f0,#5030d7);transform:translateY(-1px)}
.primary-button:disabled{cursor:wait;opacity:.72;transform:none}
.button-spinner{display:none;width:18px;height:18px;border-radius:50%;border:2px solid rgba(255,255,255,.35);
  border-top-color:#fff;animation:spin .7s linear infinite}
.primary-button.is-loading .button-label{display:none}.primary-button.is-loading .button-spinner{display:inline-block}
@keyframes spin{to{transform:rotate(360deg)}}
.message{min-height:22px;margin-top:12px;font-size:13px;font-weight:700}
.message.error{color:#c3374f}.message.success{color:var(--green)}
.card-divider{height:1px;background:var(--line);margin:25px 0 20px}
.support-row{display:flex;flex-direction:column;gap:3px;font-size:12px;color:#7a8494}
.support-row span:first-child{font-weight:800;color:#4c566a}
.install-panel{grid-column:1/-1;padding:36px 42px 34px}
.platform-tabs{display:flex;gap:8px;margin:22px 0 24px;padding:5px;background:#f1f3f8;border-radius:12px;width:max-content;max-width:100%}
.platform-tabs button{border:0;border-radius:9px;padding:9px 14px;background:transparent;color:#687286;font-size:13px;font-weight:800}
.platform-tabs button[aria-selected="true"]{background:#fff;color:var(--purple);box-shadow:0 2px 8px rgba(25,32,49,.1)}
.tab-panel ol{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;list-style:none;counter-reset:steps;margin:0;padding:0}
.tab-panel li{counter-increment:steps;padding:18px 18px 17px;border:1px solid var(--line);border-radius:14px;background:#fbfcfe}
.tab-panel li:before{content:counter(steps);display:grid;place-items:center;width:28px;height:28px;margin-bottom:12px;border-radius:9px;
  color:var(--purple);background:var(--purple-soft);font-weight:900;font-size:13px}
.tab-panel strong,.tab-panel span{display:block}.tab-panel strong{font-size:14px}.tab-panel span{font-size:13px;color:var(--muted);margin-top:5px}
code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.92em;color:#4d3ab0;word-break:break-word}
.update-note{margin-top:18px;padding:15px 17px;border-radius:13px;background:#f2efff;display:flex;gap:14px;align-items:flex-start}
.update-note strong{white-space:nowrap;color:#4c35c0}.update-note span{font-size:13px;color:#5d5876}
footer{width:min(1160px,calc(100% - 40px));margin:0 auto 30px;display:flex;justify-content:space-between;color:#8a93a3;font-size:12px}
@media(max-width:900px){
  .page-shell{grid-template-columns:1fr;padding-top:28px}.hero{min-height:auto}.hero-copy{margin-top:54px}
  .install-panel{grid-column:auto}.tab-panel ol{grid-template-columns:1fr}.trust-list{margin-top:44px}
}
@media(max-width:560px){
  .page-shell{width:min(100% - 24px,1160px);padding-top:12px;gap:14px}.hero,.download-card,.install-panel{border-radius:20px}
  .hero{padding:28px 24px}.download-card{padding:28px 22px}.install-panel{padding:28px 22px}
  .hero-copy{margin-top:46px}h1{font-size:38px}.lead{font-size:16px}.platform-tabs{width:100%;overflow:auto}
  .platform-tabs button{white-space:nowrap;flex:1}.trust-list{gap:7px}.trust-list li{font-size:11px}
  footer{width:min(100% - 30px,1160px);flex-direction:column;gap:4px}
}