.learn-page{width:100%;max-width:1200px;margin:0 auto;padding:52px 28px 20px}.learn-intro{justify-content:space-between;align-items:flex-end;gap:24px;padding-bottom:37px;display:flex}.learn-eyebrow{color:#a6bb8a;letter-spacing:.22em;font-size:10px;font-weight:600}.learn-intro h1{letter-spacing:-.04em;margin:15px 0 16px;font-size:clamp(36px,4.2vw,51px);font-weight:500;line-height:1.09}.learn-intro h1 span{color:#d8f94e}.learn-intro p:not(.learn-eyebrow){color:#9aa7b6;font-size:14px;line-height:1.65}.learn-free-note{color:#d7e4cc;border-left:1px solid #d8f94e30;align-items:center;gap:13px;margin-bottom:5px;padding:17px 20px;font-size:14px;display:flex}.learn-free-note>span{color:#d8f94e;font-size:33px}.learn-free-note small{color:#97a296;margin-top:5px;font-size:11px;display:block}.learn-workspaces{background:#0f141c;border:1px solid #ffffff0d;border-radius:16px;grid-template-columns:repeat(3,1fr);gap:6px;margin-bottom:26px;padding:6px;display:grid}.learn-workspaces button{text-align:left;color:#9aa7b6;border:1px solid #0000;border-radius:11px;align-items:center;gap:13px;padding:16px 21px;font-size:13px;transition:background .18s,color .18s;display:flex}.learn-workspaces button.is-selected{color:#e0ebca;background:#c1e1700e;border-color:#d8f94e25}.learn-workspaces button:hover{background:#ffffff05}.learn-workspaces small{color:#91a093;margin-top:3px;font-size:10px;display:block}.learn-workspace-icon{font-family:var(--font-mono);color:#b9d685;width:25px;font-size:25px;line-height:1}.learn-workspace{animation:.22s both lab-appear}.learn-loading{color:#a7b48f;background:#10151c;border:1px solid #ffffff0d;border-radius:18px;place-items:center;min-height:450px;display:grid}.lab-layout{background:#0c1119;border:1px solid #ffffff10;border-radius:18px;grid-template-columns:325px minmax(0,1fr);display:grid;overflow:hidden}.lab-sidebar{background:#101620;border-right:1px solid #ffffff0c;min-width:0;padding:25px}.lab-section-title{justify-content:space-between;align-items:center;gap:10px;display:flex}.lab-section-title h2,.lab-section-title h3{font-size:15px;font-weight:500}.lab-section-title>span{color:#a1aa97;letter-spacing:.11em;white-space:nowrap;font-size:8px}.lab-help{color:#9ba9ba;margin-top:12px;font-size:12px;line-height:1.8}.equation-rows{gap:12px;margin-top:21px;display:grid}.equation-row{background:#080d1480;border:1px solid #ffffff0f;border-left-width:2px;border-radius:9px;padding:10px 11px 8px}.equation-row-top{justify-content:space-between;align-items:center;gap:8px;margin-bottom:7px;display:flex}.equation-visibility{color:#a6b1c0;align-items:center;gap:7px;min-height:24px;font-size:10px;display:inline-flex}.equation-visibility>span{border-radius:50%;width:7px;height:7px;display:block}.equation-remove{color:#a6b1c0;border-radius:4px;width:26px;height:26px;font-size:19px;line-height:1}.equation-remove:hover{background:#ffffff09}.equation-remove:disabled{opacity:.25;cursor:not-allowed}.equation-row input{color:#e6ebdf;width:100%;font-family:var(--font-mono);background:0 0;border:none;outline:none;padding:5px 0;font-size:12px}.equation-row input:focus{box-shadow:0 1px #cce58b}.equation-row input::placeholder{color:#647487}.equation-status{color:#8a99a8;min-height:21px;padding-top:7px;font-size:9px;line-height:1.5}.lab-error{color:#ff9ead}.lab-add{color:#bac7a4;border:1px dashed #c3d69230;border-radius:8px;width:100%;margin-top:12px;padding:11px;font-size:11px}.lab-add:disabled{opacity:.35;cursor:not-allowed}.lab-tools{gap:7px;margin-top:18px;display:flex}.lab-tools button{color:#c6d0db;background:#ffffff03;border:1px solid #ffffff14;border-radius:7px;flex:1;padding:9px 5px;font-size:10px}.lab-tools button:hover,.lab-reset:hover{border-color:#d8f94e50}.lab-notice{color:#94a58a;min-height:36px;margin-top:12px;font-size:10px;line-height:1.6}.lab-reference{border-top:1px solid #ffffff10;margin-top:20px;padding-top:16px}.lab-reference summary{color:#bbc6d2;cursor:pointer;font-size:11px}.lab-reference p{color:#9ba9ba;margin-top:11px;font-size:11px;line-height:1.9}.lab-reference code{font-family:var(--font-mono);color:#c9dbaf;font-size:10px}.lab-graph-area{min-width:0}.lab-graph-toolbar{color:#9fafbf;border-bottom:1px solid #ffffff0c;justify-content:space-between;align-items:center;gap:14px;padding:17px 21px;font-size:10px;display:flex}.lab-graph-toolbar>span{align-items:center;gap:7px;display:flex}.lab-graph-toolbar i,.surface-caption i{border-radius:50%;width:7px;height:7px;display:inline-block}.lab-live-dot{background:#d8f94e;border-radius:50%;width:5px;height:5px;margin-right:3px;display:inline-block}.lab-calculator-graph{height:440px;margin:12px}.lab-graph-note{color:#95a0af;flex-wrap:wrap;justify-content:space-between;gap:8px;margin:0 23px 20px;font-size:10px;display:flex}.lab-table-wrap{padding:0 23px 22px;overflow-x:auto}.lab-value-table{text-align:center;border-collapse:collapse;width:100%;font-family:var(--font-mono);color:#bcc8d5;font-size:10px}.lab-value-table caption{text-align:left;font-family:var(--font-sans);color:#8d9faf;margin-bottom:8px;font-size:10px}.lab-value-table td,.lab-value-table th{border:1px solid #ffffff0c;padding:8px}.lab-value-table th{color:#d8f94e;background:#ffffff03;font-weight:400}.lab-gallery{margin-top:39px}.lab-gallery h2{letter-spacing:-.025em;margin-top:10px;font-size:23px;font-weight:500}.lab-gallery p:not(.learn-eyebrow){color:#99a7b7;margin-top:8px;font-size:12px}.lab-gallery-cards{grid-template-columns:repeat(3,1fr);gap:12px;margin-top:21px;display:grid}.lab-gallery-cards button{text-align:left;background:#ffffff02;border:1px solid #ffffff10;border-radius:12px;padding:19px;transition:border-color .18s,transform .18s;position:relative;overflow:hidden}.lab-gallery-cards button:hover{border-color:#d8f94e40;transform:translateY(-2px)}.lab-gallery-number{color:#9daf81;font-family:var(--font-mono);font-size:10px}.lab-gallery-cards strong{color:#d4deca;margin:16px 0 7px;font-size:13px;font-weight:500;display:block}.lab-gallery-cards code{color:#8ea2b2;font-size:10px;font-family:var(--font-mono);overflow-wrap:anywhere}.lab-gallery-arrow{color:#9eb47c;position:absolute;top:18px;right:17px}.lesson-topline{color:#a1aebd;justify-content:space-between;align-items:center;gap:16px;margin:0 0 17px;font-size:12px;display:flex}.lesson-progress{color:#c5dc94;white-space:nowrap;border:1px solid #d8f94e25;border-radius:18px;padding:7px 11px;font-size:10px}.lesson-picker{grid-template-columns:repeat(6,1fr);gap:8px;margin-bottom:20px;display:grid}.lesson-picker button{color:#a4b2c0;background:#ffffff02;border:1px solid #ffffff10;border-radius:11px;flex-direction:column;align-items:center;gap:9px;padding:15px 6px;font-size:10px;display:flex;position:relative}.lesson-picker button.is-selected{color:#d9e7c1;background:#d8f94e09;border-color:#d8f94e60}.lesson-picker button>span:first-child{font-size:23px;font-family:var(--font-mono);color:#bdd18f;line-height:1.4}.lesson-check{color:#d8f94e;position:absolute;top:7px;right:9px}.transform-title{letter-spacing:-.03em;margin-top:10px;font-size:23px;font-weight:500;line-height:1.2}.lesson-rule{color:#d5e6b5;font-family:var(--font-mono);overflow-wrap:anywhere;background:#d8f94e07;border:1px solid #d8f94e18;border-radius:7px;margin:18px 0 23px;padding:13px;font-size:11px;line-height:1.8;display:block}.lab-slider{margin-top:20px;display:block}.lab-slider>span{color:#c1ccd8;justify-content:space-between;align-items:center;font-size:11px;display:flex}.lab-slider code{font-family:var(--font-mono);color:#8e9f7b;margin-left:7px;font-size:10px}.lab-slider output{color:#cce698;text-align:center;min-width:40px;font-family:var(--font-mono);background:#d8f94e0b;border-radius:5px;padding:2px 7px;font-size:10px}.lab-slider input{accent-color:#cbe887;cursor:pointer;width:100%;height:22px;margin-top:8px}.lab-slider small{color:#92a1b1;font-size:9px;line-height:1.5;display:block}.lab-reset{color:#c0ceac;border:1px solid #c0ceac25;border-radius:7px;margin-top:21px;padding:9px 12px;font-size:10px}.lab-transform-graph{height:380px;margin:12px}.live-equation{background:#d8f94e05;border:1px solid #d8f94e20;border-radius:8px;margin:0 23px;padding:15px 17px}.live-equation>span{color:#98ab7e;letter-spacing:.16em;margin-bottom:8px;font-size:8px;display:block}.live-equation code{color:#d7e7ba;font-size:13px;font-family:var(--font-mono);overflow-wrap:anywhere}.lab-insight{gap:12px;margin:22px 23px;display:flex}.lab-insight>span{color:#d8f94e;font-size:24px}.lab-insight strong{color:#c3d0b9;font-size:11px;font-weight:500}.lab-insight p{color:#96a7b9;margin-top:4px;font-size:11px;line-height:1.8}.lesson-bottom{grid-template-columns:.8fr 1.2fr;gap:18px;margin-top:23px;display:grid}.lesson-experiment,.lesson-quiz{background:#ffffff02;border:1px solid #ffffff10;border-radius:14px;padding:25px}.lesson-experiment h3{color:#d5e2c4;margin-top:14px;font-size:19px;font-weight:500;line-height:1.5}.lesson-experiment p,.lesson-quiz p{color:#98a7b8;margin-top:12px;font-size:12px;line-height:1.8}.lesson-answers{flex-wrap:wrap;gap:8px;margin-top:16px;display:flex}.lesson-answers button{color:#c4cfdd;border:1px solid #ffffff16;border-radius:8px;padding:9px 11px;font-size:11px}.lesson-answers button.is-correct{color:#d8f94e;background:#d8f94e0d;border-color:#d8f94e60}.lesson-answers button.is-incorrect{color:#ffc595;border-color:#ffc59555}.lesson-feedback{min-height:56px}.lesson-feedback p{color:#a7b8c4;font-size:11px}.lesson-feedback .is-correct{color:#bbd792}.lesson-achievement{background:#d8f94e08;border:1px solid #d8f94e30;border-radius:14px;align-items:center;gap:20px;margin-top:24px;padding:23px;display:flex}.lesson-achievement>span{color:#d8f94e;font-size:36px}.lesson-achievement strong{color:#d4e9ae;font-size:16px;font-weight:500}.lesson-achievement p{color:#a0b093;margin-top:4px;font-size:12px}.lesson-achievement a{color:#d8f94e;margin-left:auto;font-size:12px}.surface-select{color:#a4b2c0;margin-top:23px;font-size:10px;display:block}.surface-select select{color:#d2ddc5;background:#080d15;border:1px solid #ffffff20;border-radius:8px;width:100%;margin-top:8px;padding:11px;font-size:12px;display:block}.surface-formula{font-size:10px}.surface-keyboard{color:#94a2b4;margin-top:25px;font-size:10px;line-height:1.8}.surface-canvas{background:radial-gradient(#adc8630b,#0000 70%);height:450px;margin:12px}.surface-caption{color:#9faec0;flex-wrap:wrap;justify-content:center;align-items:center;gap:16px;padding:12px 14px 20px;font-size:10px;display:flex}.surface-caption span{align-items:center;gap:6px;display:inline-flex}.surface-caption span:last-child{color:#8a99aa}.learn-footer{color:#8497aa;border-top:1px solid #ffffff0f;flex-wrap:wrap;justify-content:space-between;gap:14px;margin-top:46px;padding:25px 0;font-size:11px;display:flex}.learn-footer a{color:#c2d899}.learn-page button:focus-visible,.learn-page input:focus-visible,.learn-page select:focus-visible,.learn-page a:focus-visible,.learn-page summary:focus-visible{outline-offset:3px;outline:2px solid #d8f94e}@keyframes lab-appear{0%{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}@media (max-width:950px){.lab-layout{grid-template-columns:290px minmax(0,1fr)}.lab-sidebar{padding:20px}.learn-workspaces button{gap:10px;padding:14px}.learn-workspaces small{font-size:9px}.learn-free-note{padding-inline:14px 0}.lab-gallery-cards{grid-template-columns:repeat(2,1fr)}}@media (max-width:720px){.learn-page{padding:34px 17px 16px}.learn-intro{display:block}.learn-free-note{margin-top:24px;padding-block:8px}.learn-workspaces{gap:4px;padding:4px}.learn-workspaces button{text-align:center;flex-direction:column;gap:8px;padding:12px 5px;font-size:10px}.learn-workspaces small{display:none}.learn-workspace-icon{font-size:22px}.lab-layout{grid-template-columns:1fr}.lab-sidebar{border-bottom:1px solid #ffffff10;border-right:0}.lab-calculator-graph{height:350px;margin:7px}.lab-transform-graph{height:335px;margin:7px}.lab-graph-toolbar{padding:15px;font-size:9px}.lab-graph-note{margin-inline:15px}.lesson-picker{grid-template-columns:repeat(3,1fr)}.lesson-picker button{flex-direction:row;justify-content:center;padding:10px 7px;font-size:10px}.lesson-picker button>span:first-child{font-size:18px}.lesson-topline{align-items:flex-start;font-size:11px}.lesson-bottom{grid-template-columns:1fr}.lesson-experiment,.lesson-quiz{padding:20px}.surface-canvas{height:360px;margin:7px}.lesson-achievement{flex-wrap:wrap;gap:12px;padding:18px}.lesson-achievement a{margin-left:0}.lab-gallery-cards{gap:9px}.lab-gallery-cards button{padding:15px}.lab-gallery-cards strong{font-size:12px}.lab-notice{min-height:20px}}@media (prefers-reduced-motion:reduce){.learn-workspace{animation:none}.learn-workspaces button,.lab-gallery-cards button{transition:none}.lab-gallery-cards button:hover{transform:none}}