:root{--os-font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--os-font-display: var(--os-font-sans);--os-font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;--os-background: #ffffff;--os-foreground: #313a46;--os-card: #ffffff;--os-card-foreground: #313a46;--os-popover: #ffffff;--os-popover-foreground: #313a46;--os-muted: #f6f7fb;--os-muted-foreground: #6c757d;--os-faint: #98a2ab;--os-accent: #f7f7fb;--os-accent-foreground: #313a46;--os-sidebar-active: #e2e6f1;--os-panel-hover: #eceef6;--os-row-hover: rgb(0 0 0 / .02);--os-border: #edf2f9;--os-border-strong: #dfe3ea;--os-input: #e7e9eb;--os-ring: #1ab394;--os-primary: #1ab394;--os-primary-foreground: #ffffff;--os-secondary: #e8f7f4;--os-secondary-foreground: #1ab394;--os-success: #0acf97;--os-success-foreground: #ffffff;--os-success-soft: #e2faf2;--os-warning: #d98c2b;--os-warning-foreground: #ffffff;--os-warning-soft: #fef3e2;--os-destructive: #ed5565;--os-destructive-foreground: #ffffff;--os-destructive-soft: #fdeaec;--os-info: #23c6c8;--os-info-foreground: #ffffff;--os-info-soft: #e4f8f8;--os-chart-3: #d98c2b;--os-dialog-overlay: #22292f;--os-shadow-elev: 0 2px 8px rgb(49 58 70 / .1);--os-radius-sm: .375rem;--os-radius-md: .5rem;--os-radius-lg: .625rem}[role=dialog]{--os-input: #b8bcc3}:root{color-scheme:light}body{margin:0;background:var(--os-background);color:var(--os-foreground);font-family:var(--os-font-sans);font-size:14px}h1,h2,h3{font-family:var(--os-font-display);font-weight:600}a{color:var(--os-primary);text-decoration:none}a:hover{text-decoration:underline}button{display:inline-flex;align-items:center;gap:6px;font-family:inherit;font-size:13px;font-weight:500;background:var(--os-card);color:var(--os-foreground);border:1px solid color-mix(in srgb,var(--os-muted-foreground) 22%,transparent);border-radius:var(--os-radius-sm);padding:6px 12px;cursor:pointer;transition:background-color .12s,border-color 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90%,#000)}.btn-danger{background:var(--os-destructive);color:var(--os-destructive-foreground);border-color:var(--os-destructive);font-weight:600}.btn-danger:hover:not(:disabled){background:color-mix(in srgb,var(--os-destructive) 90%,#000)}.btn-ghost{background:transparent;border-color:transparent;color:var(--os-muted-foreground)}.btn-ghost:hover:not(:disabled){background:var(--os-accent)}.btn-row{display:inline-flex;gap:6px}.ota-state{padding:28px 16px;text-align:center;color:var(--os-faint);border:1px dashed var(--os-border);border-radius:var(--os-radius-md);font-size:13px}.ota-error{padding:10px 14px;border-radius:var(--os-radius-md);background:var(--os-destructive-soft);color:var(--os-destructive);border:1px solid var(--os-destructive);font-size:13px;display:flex;justify-content:space-between;align-items:center;gap:12px}.ota-spinner{display:inline-block;width:14px;height:14px;border:2px solid var(--os-border-strong);border-top-color:var(--os-primary);border-radius:50%;animation:ota-spin .7s linear infinite;vertical-align:-2px}@keyframes ota-spin{to{transform:rotate(360deg)}}.ota-overlay{position:fixed;inset:0;background:color-mix(in srgb,var(--os-dialog-overlay) 55%,transparent);display:flex;align-items:center;justify-content:center;padding:24px;z-index:50}.ota-modal{width:min(520px,92vw);max-height:calc(100vh - 48px);display:flex;flex-direction:column;background:var(--os-popover);color:var(--os-popover-foreground);border:1px solid var(--os-border);border-radius:var(--os-radius-lg);box-shadow:var(--os-shadow-elev)}.ota-modal-head{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;border-bottom:1px solid var(--os-border)}.ota-modal-head 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12px;font-size:14px;color:var(--os-popover-foreground);cursor:pointer;white-space:nowrap}.ota-combo-option:hover{background:var(--os-panel-hover)}.ota-combo-option.selected{font-weight:600;color:var(--os-primary)}