:root{
  --bg:#070b0e;
  --panel:#0a1116;
  --panel2:#0b151d;
  --line:rgba(113,143,158,.46);
  --line-soft:rgba(113,143,158,.20);
  --text:#eef2f4;
  --muted:#9caab2;
  --accent:#59c6ff;
  --grid-small:rgba(90,114,126,.055);
  --grid-large:rgba(90,114,126,.09);
}
*{box-sizing:border-box}
html{background:var(--bg)}
body{
  margin:0;
  min-width:320px;
  color:var(--text);
  font-family:"Space Mono","Consolas",monospace;
  background-color:var(--bg);
  background-image:
    linear-gradient(var(--grid-large) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid-large) 1px,transparent 1px),
    linear-gradient(var(--grid-small) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid-small) 1px,transparent 1px);
  background-size:64px 64px,64px 64px,16px 16px,16px 16px;
  background-position:-1px -1px;
}
a{color:inherit;text-decoration:none}
.page-frame{
  position:fixed;
  inset:26px;
  pointer-events:none;
  z-index:99;
  background:
    linear-gradient(var(--muted),var(--muted)) left top/18px 1px no-repeat,
    linear-gradient(var(--muted),var(--muted)) left top/1px 18px no-repeat,
    linear-gradient(var(--muted),var(--muted)) right top/18px 1px no-repeat,
    linear-gradient(var(--muted),var(--muted)) right top/1px 18px no-repeat,
    linear-gradient(var(--muted),var(--muted)) left bottom/18px 1px no-repeat,
    linear-gradient(var(--muted),var(--muted)) left bottom/1px 18px no-repeat,
    linear-gradient(var(--muted),var(--muted)) right bottom/18px 1px no-repeat,
    linear-gradient(var(--muted),var(--muted)) right bottom/1px 18px no-repeat;
  opacity:.9;
}
.shell{width:min(1120px,calc(100% - 72px));margin:0 auto;padding:34px 0 28px}
.topbar{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding:0 0 22px}
.brand{font-family:"Michroma",sans-serif;font-size:22px;letter-spacing:.19em}
.back{font-size:11px;color:var(--accent)}
.hero{padding:58px 0 38px}
.eyebrow{color:var(--accent);font-size:12px;letter-spacing:.12em;margin-bottom:14px}
h1{font-family:"Michroma",sans-serif;font-size:clamp(34px,5vw,64px);font-weight:400;letter-spacing:.06em;margin:0;line-height:1.1}
.lead{max-width:760px;color:#aab6bd;font-size:14px;line-height:1.8;margin:22px 0 0}
.download-card{border:1px solid rgba(89,198,255,.55);background:linear-gradient(180deg,rgba(10,17,22,.95),rgba(8,14,18,.96));display:grid;grid-template-columns:88px 1fr;min-height:270px}
.card-mark{border-right:1px solid var(--line-soft);display:flex;align-items:flex-start;justify-content:center;padding-top:26px;color:var(--accent);font-size:13px}
.card-main{padding:28px 34px 32px}
.system{font-size:11px;color:#748996;letter-spacing:.12em;margin-bottom:8px}
h2{font-family:"Michroma",sans-serif;font-size:30px;font-weight:400;letter-spacing:.08em;margin:0 0 16px}
.card-main p{color:#aab6bd;font-size:13px;margin:0 0 27px}
.download-button{display:inline-flex;align-items:center;gap:13px;border:1px solid var(--accent);color:var(--accent);padding:16px 22px;font-size:13px;letter-spacing:.04em;transition:.18s ease}
.download-button span{font-size:20px;line-height:1}
.download-button:hover{background:rgba(89,198,255,.10);box-shadow:0 0 24px rgba(89,198,255,.10)}
.filename{margin-top:12px;color:#6f828d;font-size:10px}
.steps{margin-top:28px;border-top:1px solid var(--line);padding-top:24px}
.steps-head{display:flex;align-items:center;gap:16px;color:#b9c3c8;font-size:12px}.steps-head i{display:block;height:1px;background:var(--accent);width:44px}
.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:18px}
.step-grid article{border:1px solid var(--line-soft);background:rgba(8,14,18,.72);padding:22px;min-height:170px}
.step-grid b{display:block;color:var(--accent);font-size:12px;font-weight:400;margin-bottom:24px}
.step-grid h3{font-family:"Michroma",sans-serif;font-size:15px;font-weight:400;letter-spacing:.04em;margin:0 0 12px}
.step-grid p{color:#93a2aa;font-size:12px;line-height:1.65;margin:0}
.note{margin-top:18px;border-left:2px solid var(--accent);background:rgba(8,14,18,.66);padding:14px 18px;color:#99a8b0;font-size:11px;line-height:1.6}.note span{color:var(--accent);margin-right:12px}
footer{border-top:1px solid var(--line-soft);margin-top:42px;padding-top:18px;display:flex;justify-content:space-between;color:#687a84;font-size:10px}
@media(max-width:700px){
  .shell{width:calc(100% - 28px);padding-top:18px}.page-frame{inset:10px}.topbar{padding-bottom:16px}.brand{font-size:18px}.back{font-size:9px}.hero{padding:42px 0 28px}.lead{font-size:12px}.download-card{grid-template-columns:52px 1fr}.card-main{padding:24px 20px 26px}.card-mark{padding-top:24px}.download-button{width:100%;justify-content:center}.step-grid{grid-template-columns:1fr}.step-grid article{min-height:0}footer{gap:16px;flex-direction:column}
}