:root{--canvas: #f7f7f8;--sidebar: #fafafa;--surface: #ffffff;--surface-subtle: #fafafa;--surface-hover: #f0f0f2;--ink: #202023;--muted: #626269;--subtle: #707078;--border: rgb(24 24 27 / 12%);--border-strong: rgb(24 24 27 / 24%);--primary: #255ad6;--primary-hover: #1e4ebf;--primary-soft: #f0f4fd;--primary-fill: linear-gradient(to bottom, color-mix(in srgb, var(--primary) 93%, white), var(--primary));--primary-fill-hover: linear-gradient(to bottom, color-mix(in srgb, var(--primary) 86%, white), var(--primary));--primary-line: color-mix(in srgb, var(--primary) 55%, var(--border));--control-shadow: 0 0 0 1px var(--border), 0 1px 2px rgb(24 24 27 / 5%);--primary-shadow: 0 0 0 1px var(--primary-hover), inset 0 1px 0 rgb(255 255 255 / 24%), 0 1px 2px rgb(24 24 27 / 8%);--panel-shadow: 0 0 0 1px var(--border), 0 2px 3px rgb(24 24 27 / 3%);--success: oklch(.51 .112 152);--success-soft: oklch(.95 .027 152);--warning: oklch(.61 .125 82);--warning-soft: oklch(.965 .031 82);--danger: oklch(.54 .175 27);--danger-soft: oklch(.96 .028 27);--shadow-float: 0 4px 8px rgb(24 24 27 / 6%), 0 12px 24px rgb(24 24 27 / 8%);--focus-ring: color-mix(in oklch, var(--primary) 18%, transparent);--ease-out: cubic-bezier(.16, 1, .3, 1);--radius-control: 8px;--radius-option: 6px;--radius-panel: 12px;--radius-large: 12px;--bg: var(--canvas);--text: var(--ink);--text-strong: var(--ink);--text-muted: var(--muted);--text-subtle: var(--subtle);--accent: var(--primary);--accent-strong: var(--primary-hover);--accent-soft: var(--primary-soft);--accent-muted: oklch(.58 .008 260);--radius-card: var(--radius-panel);--radius-pill: 999px;--shadow-md: var(--shadow-float);--color-parchment: var(--canvas);--color-vellum: var(--surface-subtle);--color-chalk: var(--surface);--color-ink: var(--ink);--color-graphite: var(--ink);--color-slate: var(--muted);--color-ash: var(--subtle);--color-silver-mist: var(--border);--color-linen: var(--surface-hover);--color-blueprint: var(--primary);--color-electric-sky: 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#18181b29}.ui-button-ghost{background:transparent;color:var(--muted);box-shadow:none}.ui-button-ghost:hover:not(:disabled),.ui-button-ghost[aria-expanded=true]{background:var(--surface-hover);color:var(--ink)}.ui-button-danger{background:var(--danger);color:#fff;box-shadow:0 0 0 1px color-mix(in srgb,var(--danger) 85%,black),inset 0 1px #ffffff26,0 1px 2px #18181b0d}.ui-button-danger:hover:not(:disabled){background:color-mix(in srgb,var(--danger) 90%,black)}.ui-button:focus-visible{box-shadow:none}.button.danger{color:var(--danger);background:var(--danger-soft)}.button:disabled,.link-button:disabled,.tip-btn:disabled{opacity:.45}.button,.ui-button{text-decoration:none;transition:transform .1s 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