:root{color:#1e2933;background:#f7f8fb;--app-max-width: 680px;--primary-column-width: 680px;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}*{box-sizing:border-box}body{min-width:320px;min-height:100vh;margin:0}button,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.48}.app-shell{width:min(var(--app-max-width),calc(100vw - 32px));min-height:100vh;margin:0 auto;padding:22px 0;display:flex;flex-direction:column;gap:14px}.app-header{display:flex;flex-direction:column;gap:14px}.clm-top-right{display:flex;flex-direction:column;gap:10px;width:100%}.feedback-trigger{min-height:34px;padding:0 12px;border:1px solid #d8e0e8;border-radius:999px;background:#ffffffdb;color:#344250;font-size:.84rem;font-weight:800;box-shadow:0 1px 2px #1827360f}.feedback-trigger:hover{background:#fff}.clm-mode-toggle-wrap,.clm-mode-toggle-wrap .mode-switch{width:100%}.clm-brand{--brand-icon-size: clamp(64px, 6vw, 84px);--brand-gap: 12px;display:flex;flex-direction:column;align-items:flex-start;min-width:0}.clm-header-row{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px}.clm-brand-row{display:flex;align-items:center;gap:var(--brand-gap);min-width:0}.clm-header-actions{display:flex;align-items:center;flex-shrink:0}.clm-brand-title{font-size:clamp(32px,4vw,44px);font-weight:700;line-height:1}.clm-brand-subtitle{font-size:12px;letter-spacing:1px;opacity:.7;margin:0 0 4px calc(var(--brand-icon-size) + var(--brand-gap));text-transform:uppercase}.clm-brand-icon-wrap{position:relative;display:block;flex-shrink:0;width:var(--brand-icon-size);height:var(--brand-icon-size)}.clm-brand-icon-wrap:before{position:absolute;inset:12%;border-radius:999px;background:radial-gradient(circle,#ffd26438,#42a5f500);content:"";opacity:0;transform:scale(.82);pointer-events:none}.clm-brand-icon-wrap.pulse:before{animation:brandRipple .72s ease-out}.clm-brand-icon-wrap.pulse .clm-brand-icon{animation:brandIconPulse .72s ease-out}.clm-brand-icon{width:var(--brand-icon-size);height:var(--brand-icon-size);display:block;object-fit:contain;transform-origin:center}.tool-description-panel{width:100%;padding:14px 16px;border:1px solid #dce4ec;border-radius:14px;background:#eef4f6;color:#344250}.tool-description-panel p{color:#5b6976;font-size:.86rem;line-height:1.42}.tool-description-panel p+p{margin-top:8px}@keyframes brandIconPulse{0%{filter:brightness(1) drop-shadow(0 0 0 rgb(255 210 100 / 0));transform:scale(1)}45%{filter:brightness(1.08) drop-shadow(0 0 10px rgb(255 210 100 / .35));transform:scale(1.04)}to{filter:brightness(1) drop-shadow(0 0 0 rgb(255 210 100 / 0));transform:scale(1)}}@keyframes brandRipple{0%{opacity:0;transform:scale(.82)}42%{opacity:.42}to{opacity:0;transform:scale(1.28)}}@media(prefers-reduced-motion:reduce){.clm-brand-icon-wrap.pulse:before,.clm-brand-icon-wrap.pulse .clm-brand-icon{animation:none}}h1,h2,p{margin:0}h1{color:#17212b;font-size:clamp(1.9rem,4vw,3.05rem);line-height:1}h2{color:#26333f;font-size:.95rem}.mode-switch{display:inline-grid;grid-template-columns:repeat(2,minmax(96px,1fr));padding:4px;border:1px solid #dbe1ea;border-radius:12px;background:#fff;box-shadow:0 1px 2px #1827360f}.mode-button{min-height:38px;border:0;border-radius:9px;background:transparent;color:#51606e;font-weight:700}.mode-button.active{background:#2f5f73;color:#fff}.content-grid{flex:1;display:grid;grid-template-columns:minmax(0,var(--primary-column-width));gap:16px;justify-content:center;min-height:0}.copy-toast{position:fixed;top:18px;left:50%;z-index:20;padding:7px 12px;border:1px solid rgb(216 224 232 / .9);border-radius:999px;background:#fffffff5;color:#26333f;font-size:.84rem;font-weight:800;box-shadow:0 8px 24px #1f31441f;transform:translate(-50%)}.feedback-modal-overlay{position:fixed;inset:0;z-index:30;display:grid;place-items:center;padding:18px;background:#15202b70;backdrop-filter:blur(4px)}.feedback-modal{width:min(100%,520px);display:flex;flex-direction:column;gap:12px;padding:20px;border:1px solid #dce3eb;border-radius:18px;background:#fff;box-shadow:0 24px 60px #1f31443d}.feedback-modal h2{font-size:1.1rem}.feedback-modal-instructions{color:#5b6976;font-size:.93rem;line-height:1.5}.feedback-modal-label{color:#344250;font-size:.9rem;font-weight:800}.feedback-textarea{width:100%;resize:vertical;min-height:168px;padding:14px;border:1px solid #d7e0e9;border-radius:14px;outline:none;background:#fff;color:#17212b;line-height:1.55;box-shadow:inset 0 1px 2px #1f31440a}.feedback-textarea:focus{border-color:#6a9bb0;box-shadow:0 0 0 4px #6a9bb029}.feedback-modal-error{color:#a23f2c;font-size:.88rem;font-weight:700}.feedback-modal-actions{display:flex;justify-content:flex-end;gap:8px}.primary-column,.workspace-panel{min-height:0}.workspace-panel{height:100%;display:flex;flex-direction:column;gap:12px}.action-row{display:flex;align-items:center;flex-wrap:wrap;gap:8px}.action-button{min-height:38px;padding:0 14px;border:1px solid #d8e0e8;border-radius:10px;background:#fff;color:#26333f;font-weight:750;box-shadow:0 1px 2px #1827360f}.action-button.primary{border-color:#2f5f73;background:#2f5f73;color:#fff}.action-button.quiet{color:#6b5763}.tool-section{display:flex;flex-direction:column;gap:9px;padding:12px;border:1px solid #dce3eb;border-radius:14px;background:#fff}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:10px}.section-heading.compact{margin-bottom:10px}.math-tool-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:8px}.more-tools{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:8px}.math-tool,.secondary-tool{min-height:46px;width:100%;border:1px solid #d9e1e9;border-radius:10px;background:#f9fbfd;color:#24313d;font-size:1.08rem;font-weight:800;display:grid;place-items:center}.more-tool{color:#40505f;font-size:.95rem}.secondary-tool{min-height:46px;font-size:1.08rem;background:#fff}.clm-graph-section{margin-top:24px}.clm-section-title{font-weight:600;margin-bottom:8px}.clm-desmos{width:100%;height:400px;border:1px solid rgb(0 0 0 / .1);border-radius:12px;overflow:hidden}.workspace-shell{flex:1;min-height:420px;display:flex;flex-direction:column;gap:8px}.workspace-label{color:#344250;font-size:.9rem;font-weight:800}.workspace-editor{flex:1;min-height:420px;width:100%;resize:none;padding:18px;border:1px solid #d7e0e9;border-radius:16px;outline:none;background:#fff;color:#17212b;font-size:1.02rem;line-height:1.6;box-shadow:0 8px 28px #1f314412}.workspace-editor:focus{border-color:#6a9bb0;box-shadow:0 0 0 4px #6a9bb02e,0 8px 28px #1f314412}.math-editor{background:#fff;font-family:SF Mono,Menlo,Consolas,monospace;font-size:1.05rem;line-height:1.65;text-align:left;white-space:pre-wrap}@media(max-width:900px){.app-shell{width:min(100vw - 24px,var(--primary-column-width))}.tool-description-panel,.mode-switch{width:100%}.content-grid{grid-template-columns:1fr}.math-tool-grid,.more-tools{grid-template-columns:repeat(4,minmax(58px,1fr))}.workspace-shell,.workspace-editor{min-height:52vh}}@media(max-width:520px){.app-shell{width:min(100vw - 18px,var(--primary-column-width));padding:14px 0}.clm-header-row{gap:12px}.action-row{display:grid;grid-template-columns:1fr 1fr}.math-tool-grid,.more-tools{grid-template-columns:repeat(3,minmax(58px,1fr))}.feedback-modal{padding:16px}.feedback-modal-actions{display:grid;grid-template-columns:1fr 1fr}}