:root{color-scheme:light dark;--bg:#edf3f1;--surface:#fff;--surface2:#f5f8f7;--border:#d4e1dc;--text:#17343d;--muted:#657b81;--primary:#1c434f;--accent:#10954f;--danger:#b33c4a;--warning:#ad7200;--shadow:0 18px 50px rgba(22,55,63,.1)}
@media(prefers-color-scheme:dark){:root{--bg:#0b1519;--surface:#132229;--surface2:#182c33;--border:#2b4249;--text:#edf7f4;--muted:#a9bbb6;--primary:#5ea9ba;--accent:#35c77d;--danger:#ff7d89;--warning:#f0bd5d;--shadow:0 18px 50px rgba(0,0,0,.3)}}
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@media(max-width:900px){.installer-grid{grid-template-columns:1fr}.requirement-grid{grid-template-columns:repeat(2,1fr)}.review-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:650px){.installer-shell{width:min(100% - 18px,1120px);margin:15px auto}.installer-hero{align-items:flex-start;flex-direction:column;padding:20px}.installer-hero aside{width:100%}.installer-steps{grid-template-columns:1fr 1fr}.requirement-grid,.form-grid,.review-grid,.installer-lock dl{grid-template-columns:1fr}.is-wide{grid-column:auto}.installer-card,.installer-lock{padding:16px}}