.v5-hirota-migration-backdrop{position:fixed;inset:0;z-index:99;display:flex;pointer-events:auto;align-items:flex-end;justify-content:center;background:rgba(14,15,12,.42);padding:18px 0 0}.v5-hirota-migration-sheet{box-sizing:border-box;width:min(100vw,var(--v5-home-max,480px));max-height:min(86vh,720px);max-height:min(86dvh,720px);margin:0 auto;overflow:auto;border:1px solid var(--v5-map-feature-border,rgba(24,61,43,.14));border-radius:var(--claude-radius-sheet,22px) var(--claude-radius-sheet,22px) 0 0;background:var(--v5-map-cefr-guide-bg,#fbfdf9);padding:12px 20px calc(22px + env(safe-area-inset-bottom));box-shadow:0 -16px 34px rgba(14,15,12,.2);text-align:center}.v5-hirota-migration-icon{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;margin-top:6px;border-radius:50%;background:var(--v5-green-100,#e3f2e6);color:var(--v5-green-700,#1f6b40)}.v5-hirota-migration-title{margin:12px 0 0;font-size:18px;font-weight:700;line-height:1.4;color:var(--v5-ink-900,#16241b)}.v5-hirota-migration-desc{margin:16px 0 0;font-size:14px;line-height:1.65;color:var(--v5-ink-700,#3a4b40)}.v5-hirota-migration-desc strong{color:var(--v5-green-700,#1f6b40);font-weight:700}.v5-hirota-migration-actions{display:flex;flex-direction:column;gap:10px;margin-top:20px}.v5-hirota-migration-confirm,.v5-hirota-migration-dismiss{box-sizing:border-box;width:100%;min-height:46px;border-radius:14px;font-size:15px;font-weight:600;cursor:pointer}.v5-hirota-migration-confirm{border:none;background:var(--v5-green-600,#2a7d4c);color:#fff}.v5-hirota-migration-dismiss{border:1px solid var(--v5-map-feature-border,rgba(24,61,43,.14));background:transparent;color:var(--v5-ink-600,#51625a)}.v5-hirota-migration-confirm:disabled,.v5-hirota-migration-dismiss:disabled{opacity:.6;cursor:default}