.sound-prep-page{background:var(--paper);color:var(--ink);min-height:100dvh}
.sound-prep-topbar{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:24px 32px;border-bottom:1px solid var(--line)}
.sound-prep-toolbar{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.sound-prep-page a{color:inherit;text-underline-offset:4px}
.sound-prep-page a.primary{color:var(--paper);display:inline-flex;align-items:center;justify-content:center;text-decoration:none;min-height:44px}
.sound-prep-page a[hidden]{display:none}
.sound-prep-shell{max-width:1300px;margin:auto;padding:40px 32px}
.sound-prep-intro{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(260px,1fr);gap:48px;padding-bottom:36px}
.sound-prep-platform{font-size:13px;color:var(--ink-70);margin:0 0 12px}
.sound-prep-intro h1{font-size:clamp(36px,5vw,64px);line-height:1.08;letter-spacing:-.04em;margin:0 0 24px}
.sound-prep-lead{font-size:22px;font-weight:600;line-height:1.5}
.sound-prep-intro p,.sound-prep-shell li p{line-height:1.7;max-width:65ch}
.sound-prep-account{border-left:1px solid var(--line);padding-left:32px;display:flex;flex-direction:column;align-items:flex-start;gap:12px;overflow-wrap:anywhere}
.sound-prep-account p{margin:0;font-size:14px;color:var(--ink-70)}
.sound-prep-guide,.sound-prep-plans,.sound-prep-devices{border-top:1px solid var(--line);padding:28px 0;scroll-margin-top:24px}
.sound-prep-shell h2{font-size:24px;line-height:1.4;margin:0 0 16px}
.sound-prep-guide ol{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;padding-left:20px;margin:24px 0}
.sound-prep-guide li{padding-left:4px}.sound-prep-guide li p{font-size:14px;color:var(--ink-70)}
.sound-prep-note{color:var(--ink-70);font-size:14px;line-height:1.7}
#plans{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border:1px solid var(--line);margin:24px 0;scroll-margin-top:24px}
#plans>section{display:flex;flex-direction:column;gap:12px;padding:24px;border-right:1px solid var(--line);min-width:0}
#plans>section:last-child{border:0}#plans h3{font-size:18px;margin:0}#plans .plan-price{font-size:28px;font-weight:650;line-height:1.3;margin:0}#plans .plan-term{font-size:13px;color:var(--ink-70);margin:0 0 8px;flex:1}#plans button{min-height:44px}
#devices>p{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}#devices button{min-height:44px}
.sound-prep-footer{display:flex;gap:12px 24px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:24px;font-size:14px}
.sound-prep-page :focus-visible{outline:2px solid var(--ink);outline-offset:4px}
@media(max-width:850px){.sound-prep-intro{grid-template-columns:1fr;gap:24px}.sound-prep-account{border-left:0;border-top:1px solid var(--line);padding:24px 0 0}.sound-prep-guide ol{grid-template-columns:1fr;gap:8px}#plans{grid-template-columns:1fr}#plans>section{border-right:0;border-bottom:1px solid var(--line)}}
@media(max-width:600px){.sound-prep-topbar{padding:20px 16px;align-items:flex-start;flex-direction:column}.sound-prep-toolbar{gap:12px;justify-content:space-between;width:100%;font-size:13px}.sound-prep-shell{padding:28px 16px}.sound-prep-lead{font-size:20px}.sound-prep-topbar .theme-picker select{max-width:140px}}