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:root{--background:#fff;--foreground:#171717;--color-primary:#2563eb;--color-primary-hover:#1d4ed8;--color-success:#16a34a;--color-success-bg:#f0fdf4;--color-success-border:#86efac;--color-warning:#d97706;--color-warning-bg:#fffbeb;--color-warning-border:#f59e0b;--color-accent-orange:#f97316;--color-accent-orange-hover:#ea580c;--color-danger:#dc2626;--color-danger-bg:#fef2f2;--color-danger-border:#fecaca;--color-neutral:#6b7280;--color-border:#d1d5db;--color-bg-subtle:#f9fafb;--radius:8px;--color-formula-bg:#33291c;--color-formula-ink:#f5e6cc}html{height:100%}html,body{max-width:100vw;overflow-x:hidden}body{min-height:100%;color:var(--foreground);background:var(--background);font-family:var(--font-geist-sans), system-ui, Arial, sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;flex-direction:column;font-size:16px;line-height:1.5;display:flex}*{box-sizing:border-box;margin:0;padding:0}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3{font-weight:600;line-height:1.3}.page{width:100%;max-width:480px;margin:20px auto;padding:16px 16px 88px}label{color:var(--color-neutral);margin-top:12px;margin-bottom:4px;font-size:14px;display:block}button{border-radius:var(--radius);border:1px solid var(--color-border);color:var(--foreground);cursor:pointer;background:#fff;padding:10px 18px;font-family:inherit;font-size:15px;transition:background-color .15s,border-color .15s}button:hover:not(:disabled){background:var(--color-bg-subtle)}button:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--color-primary);border-color:var(--color-primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--color-primary-hover);border-color:var(--color-primary-hover)}.btn-danger{background:var(--color-danger-bg);border-color:var(--color-danger-border);color:var(--color-danger);font-weight:600}.btn-danger:hover:not(:disabled){background:var(--color-danger-border)}.btn-orange{background:var(--color-accent-orange);border-color:var(--color-accent-orange);color:#fff}.btn-orange:hover:not(:disabled){background:var(--color-accent-orange-hover);border-color:var(--color-accent-orange-hover)}.settings-block{border:1px solid var(--color-border);border-radius:var(--radius);background:#fff;margin-bottom:16px;padding:18px;box-shadow:0 1px 3px #0000000d}.settings-block-title{letter-spacing:.05em;text-transform:uppercase;color:var(--color-neutral);margin-bottom:12px;font-size:12px;font-weight:700}input:not([type=checkbox]):not([type=radio]):not([type=file]),textarea,select{border-radius:var(--radius);border:1px solid var(--color-border);width:100%;color:var(--foreground);background:#fff;padding:10px 12px;font-family:inherit;font-size:15px;display:block}input:not([type=checkbox]):not([type=radio]):not([type=file]):focus,textarea:focus,select:focus{outline:2px solid var(--color-primary);outline-offset:1px}textarea{resize:vertical;font-family:inherit}input[type=checkbox],input[type=radio]{accent-color:var(--color-primary)}.library-panel{border:1px solid var(--color-border);border-radius:var(--radius);background:#fff;padding:16px}.tab-row{border-bottom:1px solid var(--color-border);-webkit-overflow-scrolling:touch;scrollbar-width:none;gap:8px;margin-bottom:20px;display:flex;overflow-x:auto}.tab-row::-webkit-scrollbar{display:none}.tab-item{color:var(--color-neutral);white-space:nowrap;border-bottom:2px solid #0000;border-radius:6px 6px 0 0;flex-shrink:0;margin-bottom:-1px;padding:10px 10px 12px;font-size:16px;font-weight:600;text-decoration:none}.tab-item:hover{color:var(--foreground);text-decoration:none}.tab-item.active{color:var(--color-primary);border-bottom-color:var(--color-primary)}.quick-tile-anim{transition:background-color .6s}@media (prefers-reduced-motion:reduce){.quick-tile-anim{transition:none}}.formula-box{background:var(--color-formula-bg);color:var(--color-formula-ink);border-radius:var(--radius);margin:4px 0;padding:10px 14px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px;display:inline-block}.section-label{letter-spacing:.04em;text-transform:uppercase;color:var(--color-accent-orange);margin-bottom:4px;font-size:12px;font-weight:700;display:block}.bottom-nav{border-top:1px solid var(--color-border);z-index:40;background:#fff;height:64px;position:fixed;bottom:0;left:0;right:0}.bottom-nav-inner{justify-content:space-around;align-items:center;max-width:480px;height:100%;margin:0 auto;display:flex}.bottom-nav-tab{color:var(--color-neutral);flex-direction:column;align-items:center;gap:2px;padding:8px 16px;display:flex}.bottom-nav-tab:hover{text-decoration:none}.bottom-nav-tab.active{color:var(--color-primary)}.bottom-nav-icon{font-size:22px;line-height:1}.bottom-nav-label{font-size:11px;font-weight:500}