:root{--font-sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;--font-display:'Outfit',-apple-system,BlinkMacSystemFont,sans-serif;--font-serif:'Playfair Display',Georgia,serif;--font-mono:'JetBrains Mono',monospace;--bg-canvas:#f8fafc;--surface-0:#f1f5f9;--surface-1:#ffffff;--surface-2:#f8fafc;--surface-3:#e2e8f0;--border-color:rgba(15, 23, 42, 0.08);--border-strong:rgba(15, 23, 42, 0.15);--border-subtle:#cbd5e1;--text-main:#0f172a;--text-muted:#64748b;--text-subtle:#94a3b8;--primary:#2563eb;--primary-hover:#1d4ed8;--primary-subtle:#eff6ff;--primary-border:#bfdbfe;--success:#10b981;--warning:#f59e0b;--danger:#e11d48;--stamp-color:#2563eb;--radius-xs:4px;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:22px;--radius-full:9999px;--shadow-sm:0 1px 2px 0 rgba(0, 0, 0, 0.04);--shadow-md:0 4px 12px -2px rgba(0, 0, 0, 0.05),0 2px 4px -2px rgba(0, 0, 0, 0.03);--shadow-lg:0 12px 24px -4px rgba(0, 0, 0, 0.07),0 4px 6px -2px rgba(0, 0, 0, 0.04);--shadow-xl:0 20px 32px -6px rgba(0, 0, 0, 0.1),0 8px 12px -4px rgba(0, 0, 0, 0.05);--transition-fast:0.15s cubic-bezier(0.4, 0, 0.2, 1);--transition-bounce:0.25s cubic-bezier(0.34, 1.56, 0.64, 1)}*,::after,::before{box-sizing:border-box;margin:0;padding:0}html{font-size:15px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;scroll-behavior:smooth}body{font-family:var(--font-sans);background-color:var(--bg-canvas);color:var(--text-main);line-height:1.5;min-height:100vh;display:flex;flex-direction:column}.app-main{flex:1;padding:24px;max-width:1440px;margin:0 auto;width:100%}.view-section{display:none}.view-section.active-view{display:block;animation:.2s ease-out fadeIn}@keyframes fadeIn{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.toast-container{position:fixed;bottom:24px;right:24px;z-index:2000;display:flex;flex-direction:column;gap:8px}.toast{background:#0f172a;color:#fff;padding:10px 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