:root{--brand: oklch(.58 .18 18);--brand-deep: oklch(.42 .16 18);--brand-muted: oklch(.85 .035 18);--brand-ghost: oklch(.95 .008 18);--sky: oklch(.5 .14 255);--sky-muted: oklch(.9 .025 255);--teal: oklch(.55 .15 175);--teal-muted: oklch(.9 .03 175);--amber: oklch(.72 .16 80);--amber-muted: oklch(.92 .06 85);--surface: oklch(.985 0 0);--surface-elevated: oklch(1 0 0);--surface-subtle: oklch(.972 .002 18);--ink: oklch(.14 .005 260);--ink-secondary: oklch(.42 .01 260);--ink-tertiary: oklch(.6 .01 260);--border: oklch(.9 .005 260);--shadow-xs: 0 1px 2px oklch(0 0 0 / .04);--shadow-sm: 0 1px 3px oklch(0 0 0 / .05);--shadow-md: 0 4px 20px oklch(0 0 0 / .07);--shadow-lg: 0 16px 48px oklch(0 0 0 / .09);--radius-sm: 8px;--radius-md: 14px;--radius-lg: 20px;--radius-xl: 28px;--radius-full: 999px;--sidebar-w: 200px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased}body{font-family:-apple-system,BlinkMacSystemFont,SF Pro 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#cf3f5061}.btn-lg{padding:14px 34px;font-size:1rem}.btn-secondary{background:var(--surface-elevated);color:var(--ink);padding:10px 20px;border-radius:var(--radius-full);font-size:.88rem;border:1px solid var(--border)}.btn-secondary:hover{border-color:var(--brand);color:var(--brand)}.btn-outline{background:transparent;color:var(--brand);padding:10px 20px;border-radius:var(--radius-full);font-size:.88rem;border:2px solid var(--brand)}.btn-outline:hover{background:var(--brand);color:#fff}.back-link{display:inline-flex;align-items:center;gap:6px;font-size:.85rem;color:var(--ink-tertiary);cursor:pointer;margin-bottom:16px;transition:color .15s;border:none;background:none;font-family:inherit}.back-link:hover{color:var(--brand)}.toast{position:fixed;bottom:32px;left:50%;transform:translate(-50%);padding:10px 22px;border-radius:var(--radius-full);background:var(--ink);color:#fff;font-size:.82rem;font-weight:600;z-index:1000;opacity:0;transition:opacity .3s;pointer-events:none}.toast.show{opacity:1}.app-layout{display:flex;min-height:100vh;position:relative;z-index:1}.sidebar{width:var(--sidebar-w);flex-shrink:0;background:#ffffffd1;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-right:1px solid var(--border);padding:24px 16px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}.sidebar-logo{font-size:1.35rem;font-weight:800;letter-spacing:-.03em;color:var(--brand);margin-bottom:28px;padding:0 8px;cursor:pointer}.sidebar-logo span{color:var(--ink)}.side-nav{display:flex;flex-direction:column;gap:4px;flex:1}.side-nav a{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:var(--radius-sm);text-decoration:none;color:var(--ink-secondary);font-size:.9rem;font-weight:500;transition:all .15s ease}.side-nav a:hover{background:var(--surface-subtle);color:var(--ink)}.side-nav a.active{background:var(--brand-ghost);color:var(--brand);font-weight:650}.side-nav a 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