:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,Arial,sans-serif;color:#283f32;background:#f8f9f5;font-synthesis:none;--green:#245442;--muted:#7c8b70;--line:#e1e7d9}*{box-sizing:border-box}body{margin:0}button,input{font:inherit}button{color:inherit;cursor:pointer;transition:background .18s,border-color .18s,transform .15s}button:disabled{cursor:default;opacity:.5}button:active:not(:disabled){transform:translateY(1px)}button:focus-visible,a:focus-visible,input:focus-visible,[tabindex]:focus-visible{outline:3px solid #a7c26d;outline-offset:3px}h1,h2,h3,p{margin:0}a{color:inherit}.app-shell{min-height:100vh}.sidebar{position:fixed;inset:0 auto 0 0;width:218px;z-index:30;background:#f1f3ec;border-right:1px solid var(--line);display:flex;flex-direction:column;padding:30px 18px 0}.brand{display:flex;align-items:center;gap:10px;font-size:26px;font-weight:750;letter-spacing:-1px;color:#245442;text-decoration:none;padding-left:9px}.brand-dot{color:#c48361}.sidebar-caption{font-size:6.5px;letter-spacing:1px;color:#8a977a;margin:17px 0 46px 10px;white-space:nowrap}.nav-label,.path-label{font-size:8px;letter-spacing:1.7px;font-weight:600;color:#8d987f;padding:0 12px;margin-bottom:14px}.nav-item{border:0;background:transparent;display:flex;align-items:center;width:100%;text-align:left;gap:12px;padding:14px 12px;border-radius:8px;font-size:11px;margin:4px 0;color:#75846a}.nav-item:hover{background:#e7edde}.nav-item.active{background:var(--green);color:#fff}.nav-active-dot{width:5px;height:5px;border-radius:50%;background:#cfe7ab;margin-left:auto}.sidebar-path{margin:38px 12px 0}.path-label{padding:0;font-size:7px}.mini-progress{height:4px;background:#dde4d1;border-radius:3px;margin:16px 0 10px;overflow:hidden}.mini-progress>div{height:100%;background:#77965a}.sidebar-path p{font-size:9px;color:#8e9a7e}.sidebar-path b{font-size:9px;color:#647d51}.sidebar-path>button{display:flex;align-items:center;gap:6px;border:0;background:none;padding:13px 0;font-size:9px;color:#728664}.sidebar-bottom{margin-top:auto}.encouragement{display:flex;align-items:center;gap:10px;margin:36px 9px 25px;padding-top:24px;border-top:1px solid #e0e6d5}.encouragement>span{font-size:34px;color:#a7bf87}.encouragement p{font-size:10px;color:#8c997e;line-height:1.6}.guest-profile{display:flex;align-items:center;gap:9px;border:0;border-top:1px solid #dfe6d5;background:#ebefe3;text-align:left;padding:19px 18px;width:calc(100% + 36px);margin-left:-18px}.avatar{display:grid;place-items:center;background:#e1e8d5;width:30px;height:30px;border-radius:50%;font-size:10px;color:#82956d}.guest-profile>span:nth-child(2){flex:1}.guest-profile b{font-size:9px;display:block;font-weight:600}.guest-profile small{font-size:7px;display:block;color:#94a080;margin-top:4px}.guest-profile>svg{color:#8e9b7c}.main-shell{margin-left:218px}.topbar{height:70px;background:#fcfcf9;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 36px}.breadcrumb{display:flex;align-items:center;gap:11px;font-size:10px;color:#8e9982}.breadcrumb b{font-weight:500;color:#5e7153}.breadcrumb>svg{color:#bdc7af}.top-actions{display:flex;align-items:center;gap:16px}.model-tag{display:flex;align-items:center;gap:7px;background:#eff3e7;border:1px solid #e0e7d6;padding:7px 9px;border-radius:5px;font-size:9px;font-weight:500}.model-tag>i{width:5px;height:5px;border-radius:50%;background:#7a9a59}.model-tag>svg{color:#92a17e}.icon-button{border:0;background:none;color:#7f8f71;display:inline-flex;align-items:center;justify-content:center;padding:5px}.icon-button:hover{background:#e9efdf;border-radius:5px;color:#315936}.keyboard-button{display:flex;align-items:center;gap:7px;border:0;background:none;font-size:9px;color:#829273}.mobile-toggle{display:none}main{padding:30px 36px 0;max-width:1540px;margin:auto}.page-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:25px}.eyebrow{display:flex;align-items:center;gap:6px;font-size:8px;letter-spacing:1.7px;font-weight:600;color:#879573;margin-bottom:12px}.eyebrow>i{width:5px;height:5px;border-radius:50%;background:#cf8764}h1{font-size:34px;letter-spacing:-1.4px;line-height:1.3;font-weight:650;color:#2b4435}h1>span{color:#c7825e}.page-heading p{font-size:11px;line-height:1.8;color:#7e8d70;margin-top:9px}.heading-progress{display:flex;align-items:center;gap:11px;border:0;background:none;text-align:left;flex-shrink:0}.progress-ring{position:relative;width:42px;height:42px;border-radius:50%;display:grid;place-items:center}.progress-ring:before{content:"";position:absolute;inset:4px;border-radius:50%;background:#f8f9f5}.progress-ring>svg{z-index:1;color:#7c925f}.heading-progress b{display:block;font-size:17px;color:#5b7449}.heading-progress em{font-style:normal;font-weight:400;font-size:12px;color:#a3af91}.heading-progress small{display:block;font-size:8px;color:#92a07f;margin-top:3px}.module-strip{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #dfe6d5;margin-bottom:21px}.module-tabs{display:flex;gap:6px}.module-tabs>button{display:flex;align-items:center;gap:8px;border:0;background:none;padding:12px 13px 15px;position:relative;font-size:10px;color:#829372}.module-tabs>button:hover{background:#f0f4e8}.module-tabs>button.selected{font-weight:600;color:#3f663e}.module-tabs>button.selected:after{content:"";position:absolute;bottom:-1px;left:10px;right:10px;height:2px;background:#597e48}.module-tabs>button>span{font-size:7px;padding:1px 5px;border-radius:3px;background:#edf2e3;color:#92a478}.module-tabs>button.selected>span{background:#e4edda;color:#718f52}.text-button{display:inline-flex;align-items:center;justify-content:center;gap:7px;border:0;background:none;padding:5px 0;font-size:9px;font-weight:500;color:#819470}.text-button:hover{color:#31572d}.learning-workspace{display:grid;grid-template-columns:minmax(350px,1.12fr) minmax(310px,1fr);gap:23px;align-items:stretch}.calculator-lab{border:1px solid #e0e7d7;border-radius:14px;background:#edf1e8;overflow:hidden;display:flex;flex-direction:column}.lab-header{display:flex;align-items:center;justify-content:space-between;padding:14px 17px 11px}.lab-header>span{display:flex;align-items:center;gap:7px;font-size:8px;letter-spacing:1.3px;color:#839775;font-weight:600}.live-dot{display:inline-block;width:5px;height:5px;border:1px solid #8ca676;border-radius:50%}.lab-header>div{display:flex;gap:6px}.calculator-stage{flex:1;display:flex;justify-content:center;align-items:center;padding:7px 16px 23px;background-image:radial-gradient(#b5c4a333 .65px,transparent .8px);background-size:15px 15px}.calculator-body{width:304px;flex-shrink:0;background:#303238;border:1px solid #24272c;border-radius:24px 24px 40px 40px;padding:15px 14px 10px;box-shadow:0 18px 30px -15px #213b2b66,0 3px 3px #17291c22,inset 0 1px 1px #ffffff2b;position:relative}.calculator-brand{display:flex;align-items:center;justify-content:space-between;color:#eceeea;font:600 13px Arial,sans-serif;letter-spacing:-.3px;margin:0 3px 11px}.calculator-brand em{color:#e59b72;font-style:normal;font-size:12px}.calc-small-brand{font-size:5.5px;color:#8e9c92;letter-spacing:1.2px;font-weight:400}.lcd-bezel{padding:5px;border-radius:6px;background:#202429;border:1px solid #454a4d;box-shadow:inset 0 1px 3px #0007}.lcd{aspect-ratio:4/3;width:100%;background:#f6f8f3;overflow:hidden;font:500 12px Courier New,monospace;color:#25342a;position:relative;box-shadow:inset 0 0 4px #7b867222}.lcd.off{background:#282e2a}.lcd-status{height:19px;background:#e7ece3;border-bottom:1px solid #d9e1d3;display:flex;align-items:center;justify-content:space-between;padding:0 5px;font-size:6px;white-space:nowrap}.lcd-status>span:last-child{display:flex;align-items:center;gap:3px}.battery-icon{width:9px;height:5px;border:1px solid #7f8b77;display:inline-block;background:#a4b39a}.lcd-content{height:calc(100% - 19px);position:relative;overflow:hidden}.home-display{padding:7px;display:flex;flex-direction:column;justify-content:flex-end;max-height:100%;overflow:hidden;gap:4px}.history-entry{font-size:12px;line-height:1.4;flex-shrink:0}.history-answer{text-align:right;margin:3px 0;font-size:15px}.input-line{min-height:18px;white-space:nowrap;display:flex;align-items:center}.token-line{display:inline-flex;align-items:center;min-height:14px;vertical-align:middle;white-space:nowrap;position:relative}.calc-cursor{display:inline-block;width:6px;height:13px;background:#304b31;flex-shrink:0;vertical-align:middle;animation:blink 1.2s step-end infinite}.stacked-fraction{display:inline-flex;flex-direction:column;text-align:center;align-items:stretch;vertical-align:middle;min-width:11px;margin:1px 3px;line-height:1.1}.stacked-fraction>span:first-child{border-bottom:1px solid #2f442b;padding:0 2px 1px}.stacked-fraction>span:last-child{padding:1px 2px 0}.fraction-empty{font-size:10px;color:#829575}.top-key-row{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:7px;margin-top:5px}.calc-key{height:37px;display:flex;flex-direction:column;justify-content:flex-end;position:relative;min-width:0;border:0;background:none;padding:0;user-select:none;touch-action:manipulation}.key-legends{height:11px;line-height:9px;display:flex;align-items:flex-start;justify-content:center;gap:3px;font:400 6.5px Arial,sans-serif;color:#7cabc2;white-space:nowrap}.key-legends>span:last-child{color:#98ac82;font-size:6.3px}.key-face{display:flex;align-items:center;justify-content:center;width:100%;height:27px;border:1px solid #23272a;border-top-color:#62666b;border-radius:5px 5px 8px 8px;background:#474b52;color:#f2f3f0;font:500 12px Arial,sans-serif;box-shadow:0 2px 1px #1c202580,inset 0 1px 1px #ffffff15}.calc-key:hover .key-face{background:#596067}.calc-key:active .key-face{transform:translateY(1px);box-shadow:none}.top-key-row .calc-key{height:35px}.top-key-row .key-face{height:24px;font-size:7.5px;background:#545a60}.top-key-row .key-legends{font-size:5.4px}.navigation-keys{display:flex;gap:10px;margin:4px 0 3px}.modifier-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:2px 7px;width:calc(60% - 3px)}.modifier-grid .calc-key{height:35px}.modifier-grid .key-face{height:25px;font-size:8.5px}.modifier-grid .second-key .key-face{background:#7ca6bb;color:#173c4d;border-color:#4d7386;border-top-color:#a9c6d0;font-size:11px}.modifier-grid .alpha-key .key-face{background:#a0b28b;color:#2f4526;border-color:#758760;border-top-color:#c8d1b8;font-size:9px}.dpad{position:relative;width:38%;height:68px;margin:5px 3px 0}.dpad-disc{position:absolute;inset:0 2px;border-radius:50%;background:#4c5158;border:1px solid #252a31;box-shadow:inset 0 2px 2px #737c8488,0 2px 2px #181d21}.dpad-key{position:absolute;border:0;background:none;color:#e9ede7;padding:0;width:31%;height:35%;display:grid;place-items:center;z-index:1}.dpad-key:hover{background:#ffffff15}.dpad-key.up{top:0;left:35%}.dpad-key.down{bottom:0;left:35%}.dpad-key.left{left:0;top:34%}.dpad-key.right{right:0;top:34%}.dpad-center{position:absolute;inset:32% 33%;border:1px solid #606970;border-radius:3px;background:#3a4146}.science-keys{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:1px 7px}.numeric .key-face{background:#d9dfda;color:#293b2d;border-color:#acb6ac;border-top-color:#f0f3ef;font-size:15px;font-weight:500}.numeric:hover .key-face{background:#f0f3ec}.operation .key-face{background:#5a686b;border-top-color:#818d8e;font-size:16px}.enter-key .key-face{background:#9eaf8d;color:#294126;border-color:#6d8060;border-top-color:#c8d2bc;font-size:8.5px;font-weight:700}.calc-key[data-key=on] .key-face{font-size:9px}.calc-key[data-key=sto] .key-face{font-size:10px}.key-highlight>.key-face{outline:2px solid #d6e9af;outline-offset:2px;box-shadow:0 0 12px #cee99d55}.modifier-on>.key-face{outline:2px solid #d6e9af;outline-offset:1px}.calculator-foot{text-align:center;font-size:5px;letter-spacing:1.1px;color:#80907f;margin-top:10px}.lab-bottom{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;background:#e8eee0;border-top:1px solid #dae3d1;font-size:7px;color:#8d9d7a;gap:5px}.lab-bottom>span{display:flex;align-items:center;gap:5px}.lab-bottom>span>i{width:4px;height:4px;background:#91a977;border-radius:50%}.lab-bottom button{display:flex;gap:5px;align-items:center;border:0;background:none;padding:0;color:#82966c;font-size:7px}.lesson-panel{background:#fff;border:1px solid #e0e7d7;border-radius:14px;padding:25px 25px 0;display:flex;flex-direction:column;overflow:hidden}.lesson-meta{display:flex;align-items:center;gap:8px;font-size:8px;letter-spacing:1px;font-weight:600;color:#8a9c74;margin-bottom:14px}.lesson-number{padding:5px 7px;background:#edf3e2;border-radius:4px;font-size:8px;letter-spacing:.4px;color:#7d975f}.difficulty{margin-left:auto;font-size:8px;letter-spacing:0;color:#8ba174;font-weight:400}.lesson-panel h2{font-size:25px;font-weight:650;letter-spacing:-.9px;line-height:1.35}.lesson-time{display:flex;align-items:center;gap:5px;margin-top:10px;font-size:9px;color:#90a07d}.lesson-time>span{font-size:7px;padding:0 4px;color:#becbad}.lesson-progress{height:4px;border-radius:3px;overflow:hidden;background:#edf2e5;margin:23px 0 25px;flex-shrink:0}.lesson-progress>div{height:100%;background:#7f9c5c;transition:width .3s}.step-meta{display:flex;justify-content:space-between;align-items:center;font-size:8px;letter-spacing:1px;font-weight:600;color:#80966a;margin-bottom:12px}.step-meta>span:last-child{font-size:9px;font-weight:400;color:#9dae8a;letter-spacing:0}.instruction-card{display:flex;align-items:flex-start;gap:10px;padding:18px 15px 19px 13px;min-height:144px;background:#f2f6eb;border:1px solid #dce6cf;border-radius:9px}.instruction-number{display:grid;place-items:center;border:1px solid #d0debf;background:#f7faef;width:23px;min-width:23px;height:23px;border-radius:50%;font-size:8px;color:#7e9860;margin-top:1px}.instruction-card>div{min-width:0}.instruction-card h3{font-size:13px;font-weight:600;color:#3d5b32;line-height:1.5;margin:2px 0 6px}.instruction-card p{font-size:11px;color:#72845f;line-height:1.85}.key-sequence{display:flex;flex-wrap:wrap;align-items:center;gap:4px;margin-top:13px;row-gap:7px}.key-sequence>span{display:flex;align-items:center;gap:4px}.key-sequence i{font-size:11px;font-style:normal;color:#acbc95}.key-sequence kbd{display:inline-block;font-family:inherit;font-size:9px;line-height:22px;height:24px;min-width:21px;text-align:center;background:#fff;border:1px solid #d2ddc5;border-bottom:2px solid #c6d3b6;border-radius:4px;padding:0 6px;color:#6a8253;white-space:nowrap}.instruction-card.passed{background:#edf6e4;border-color:#aecb94}.instruction-card.passed .instruction-number{background:#dfeecd;border-color:#bad3a1}.listening,.success-feedback{display:flex;align-items:center;gap:6px;font-size:8.5px;line-height:1.7;color:#8a9b73;margin:15px 0 18px;min-height:18px}.listening>i{width:4px;height:4px;border-radius:50%;background:#9ab781;box-shadow:0 0 0 3px #edf4e4;flex-shrink:0;margin:0 2px}.success-feedback{color:#789e55}.primary-button{display:flex;align-items:center;justify-content:center;gap:10px;background:#285744;color:#fff;border:1px solid #285744;border-radius:6px;min-height:42px;padding:11px 16px;font-size:11px;font-weight:500;box-shadow:0 3px 3px #1f472411}.primary-button:hover:not(:disabled){background:#1d4634}.primary-button:disabled{opacity:1;background:#e8eedf;border-color:#dee7d2;color:#9aaa87;box-shadow:none}.next-step{width:100%;justify-content:space-between}.lesson-tools{display:flex;align-items:center;justify-content:space-between;margin:13px 0 12px}.lesson-tools>button{display:flex;align-items:center;gap:5px;padding:5px 0;border:0;background:none;color:#879a6e;font-size:9px}.lesson-tools>button:first-child{color:#aa8c55}.demonstrate-button{display:flex;justify-content:center;align-items:center;gap:6px;border:1px solid #e9efdf;background:none;border-radius:5px;padding:11px 4px;font-size:9px;color:#879b6b}.demonstrate-button:hover{background:#f7faef}.demonstrate-button>span{font-size:8px;color:#a4b392;border-left:1px solid #e0e8d5;padding-left:7px;margin-left:2px}.why-card{margin-top:auto;border-top:1px solid #edf2e4;padding:23px 0 20px;min-height:139px}.demonstrate-button+.why-card{margin-top:24px}.why-card>div{display:flex;align-items:center;gap:7px;color:#899d70}.why-card b{font-size:10px;font-weight:500}.why-card p{font-size:10px;line-height:1.9;color:#82966c;margin-top:10px}.lesson-panel-footer{display:flex;align-items:flex-start;gap:6px;background:#fafcf5;border-top:1px solid #edf2e4;color:#a0b08a;font-size:7px;line-height:1.7;padding:12px 17px;margin:0 -25px}.lesson-panel-footer>svg{flex-shrink:0;color:#98ac80}.hint-box{display:flex;align-items:flex-start;gap:8px;background:#fbf4e5;color:#a28b55;border-radius:6px;padding:13px;font-size:10px;line-height:1.8;margin-bottom:12px}.hint-box>svg{flex-shrink:0;margin-top:3px}.lesson-feedback{background:#fcf2e1;color:#ad8850;border-radius:6px;font-size:10px;line-height:1.8;padding:10px 12px;margin:13px 0 16px}.workspace-under{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:14px 0 0}.key-history{display:flex;flex-wrap:wrap;align-items:center;gap:5px;min-height:24px}.key-history>span{font-size:7px;letter-spacing:1px;color:#a2b08e;margin-right:7px}.key-history>small{font-size:8px;color:#acb999}.key-history kbd{font-family:inherit;font-size:8px;line-height:11px;min-width:18px;text-align:center;padding:4px 5px;border:1px solid #dfe8d1;border-radius:3px;background:#f0f5e7;color:#8a9e72}.workspace-under>.text-button{font-size:8px;white-space:nowrap;color:#9bad87}.more-lessons{margin-top:30px}.section-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.section-title h2{font-size:18px;font-weight:650;letter-spacing:-.5px}.section-title p{font-size:10px;color:#9bab87;margin-top:5px}.lesson-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.lesson-card{background:#fff;border:1px solid #e1e8d7;border-radius:10px;display:flex;flex-direction:column;text-align:left;padding:18px}.lesson-card:hover{border-color:#abc392;transform:translateY(-2px);box-shadow:0 6px 20px #35532b0a}.lesson-card-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.card-icon{width:35px;height:35px;border-radius:9px;background:#edf3df;color:#98ae75;display:grid;place-items:center}.tone-1{background:#f9ede3;color:#c79671}.tone-2{background:#e7f1e9;color:#7b9f88}.lesson-card-top>span:last-child{display:flex;align-items:center;gap:4px;color:#9bad88;font-size:8px}.lesson-card>small{color:#97aa80;font-size:7px;letter-spacing:1.2px;margin-bottom:8px}.lesson-card h3{font-size:12px;line-height:1.6;font-weight:600;margin-bottom:7px}.lesson-card p{font-size:10px;line-height:1.8;color:#859a6e;margin-bottom:17px}.card-bottom{margin-top:auto;border-top:1px solid #edf2e4;padding-top:12px;display:flex;align-items:center;justify-content:space-between;font-size:8px;color:#8a9f70}.page-footer{display:flex;align-items:center;justify-content:space-between;gap:20px;border-top:1px solid #e1e9d6;margin-top:31px;padding:19px 0 23px;color:#92a47b;font-size:8px}.page-footer>span{display:flex;align-items:center;gap:7px}.page-footer svg{color:#9eaf8a}.page-footer button{border:0;background:none;padding:0;font-size:inherit;color:inherit}.secondary-button{display:flex;align-items:center;justify-content:center;gap:7px;padding:10px 14px;background:#fff;border:1px solid #d9e5cd;border-radius:6px;color:#849b6c;font-size:10px}.secondary-button:hover{border-color:#a3bd89}.quiz-panel h3{font-size:17px;letter-spacing:-.3px;line-height:1.6;margin:16px 0 19px}.quiz-panel>button{display:flex;align-items:center;gap:10px;text-align:left;width:100%;padding:13px 11px;margin:9px 0;background:#fff;border:1px solid #e0e9d5;border-radius:7px;font-size:11px;line-height:1.6}.quiz-panel>button:hover{background:#f2f8e9;border-color:#aec897}.quiz-panel>button>span{min-width:25px;height:25px;border-radius:4px;background:#eff5e6;color:#8aa96b;font-size:10px;display:grid;place-items:center}.quiz-panel>button>svg{margin-left:auto;color:#b5c8a4;flex-shrink:0}.completion-panel{text-align:center;padding:10px 0 18px}.completion-icon{display:grid;place-items:center;width:64px;height:64px;margin:0 auto 19px;border-radius:50%;background:#e6f2d7;color:#7da15a}.completion-panel .eyebrow{display:block;font-size:7px;letter-spacing:1.2px}.completion-panel h3{font-size:22px;letter-spacing:-.6px;line-height:1.4;margin-bottom:13px}.completion-panel p{font-size:10px;line-height:1.9;color:#91a17f;margin-bottom:20px}.completion-panel>.primary-button{width:100%;margin-bottom:10px}.completion-panel>.text-button{font-size:9px}.section-icon{display:grid;place-items:center;width:43px;height:43px;border-radius:12px;background:#e7f1da;color:#829e64;margin-bottom:16px}.explore-panel{background:#fff;border:1px solid #e1e8d6;border-radius:14px;padding:30px;display:flex;flex-direction:column;align-items:flex-start}.explore-panel>.eyebrow{font-size:8px;margin-top:12px}.explore-panel h2{font-size:29px;line-height:1.4;letter-spacing:-.9px;margin:5px 0 18px}.explore-panel>p{font-size:12px;line-height:1.8;color:#8a9d79}.explore-suggestions{margin:29px 0 25px}.explore-suggestions h3{font-size:11px;margin-bottom:17px}.explore-suggestions>div{display:flex;align-items:flex-start;gap:10px;margin:19px 0}.explore-suggestions>div>svg{color:#8da875;flex-shrink:0;margin-top:2px}.explore-suggestions b{font-size:11px;font-weight:500}.explore-suggestions p{font-size:10px;line-height:1.8;color:#96aa81;margin-top:5px}.explore-panel>.primary-button{width:100%;margin-top:auto}.explore-panel>.text-button{width:100%;margin-top:12px}.reference-search{max-width:750px;display:flex;align-items:center;gap:12px;background:#fff;border:1px solid #dae5cc;border-radius:8px;padding:13px 16px;margin-bottom:23px;color:#9caf88}.reference-search input{width:100%;background:none;border:0;outline:0;font-size:12px;color:#536f3e}.reference-search input::placeholder{color:#a1b28d}.reference-search kbd{font-family:inherit;font-size:8px;white-space:nowrap;background:#f2f7e9;color:#a2b48d;border-radius:3px;padding:4px 6px}.reference-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.reference-card{display:flex;align-items:flex-start;gap:16px;padding:22px;background:#fff;border:1px solid #e1e8d6;border-radius:10px;text-align:left}.reference-card:hover{border-color:#a6c08d;box-shadow:0 4px 15px #244f3410}.reference-icon{display:grid;place-items:center;width:40px;height:40px;border-radius:10px;background:#eef4e3;color:#91ab74;flex-shrink:0}.reference-card small{font-size:8px;color:#8da379}.reference-card h3{font-size:13px;font-weight:600;margin:5px 0 9px}.reference-card p{font-size:10px;color:#80966d;line-height:1.8}.reference-card>svg{margin-left:auto;color:#a5ba92;flex-shrink:0}.empty-state{text-align:center;padding:65px 20px;color:#9aad87}.empty-state h3{font-size:18px;margin:15px 0 10px}.empty-state p{font-size:12px}.progress-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:27px}.progress-stats>div{background:#fff;border:1px solid #dfe8d3;border-radius:12px;padding:23px}.progress-stats svg{display:block;color:#8ba66d;margin-bottom:24px}.progress-stats b{font-size:35px;letter-spacing:-1px}.progress-stats em{font-style:normal;font-size:18px;font-weight:400;color:#a1b48d;margin-left:5px}.progress-stats p{font-size:11px;color:#859d6d;margin-top:8px}.progress-modules{display:grid;grid-template-columns:1fr 1fr;gap:20px}.progress-modules>section{background:#fff;border:1px solid #dfe8d3;border-radius:12px;padding:20px 22px}.progress-module-title{display:flex;align-items:center;gap:10px;color:#85a066;margin-bottom:18px}.progress-module-title h2{font-size:15px;color:#506f3e}.progress-module-title>span{font-size:8px;color:#a1b68a;margin-left:auto}.progress-modules>section>button{display:flex;align-items:center;gap:10px;width:100%;text-align:left;background:none;border:0;border-top:1px solid #edf3e3;padding:13px 0;font-size:10px}.progress-modules>section>button:hover{color:#769e55}.progress-check{display:grid;place-items:center;min-width:25px;height:25px;border:1px solid #e1ebd5;border-radius:50%;font-size:7px;color:#9aaf83}.progress-check.done{background:#e5f1d6;border-color:#d1e3bb;color:#83a65f}.progress-modules small{margin-left:auto;font-size:7px;color:#a0b38b;text-align:right}.progress-modules>section>button>svg{color:#9cb387;flex-shrink:0}.mode-display,.field-display,.y-display{padding:5px 6px;font-size:11px}.lcd-row{display:flex;align-items:center;gap:6px;min-height:24px;white-space:nowrap;font-size:9px}.lcd-row.focused,.active-field{background:#e1eada}.setting-selected{background:#2e452b;color:#fff;padding:1px 2px}.function-line{display:flex;align-items:center;gap:2px;min-height:30px;font-size:12px;white-space:nowrap}.function-line.current{background:#edf3e5}.function-name{font-size:10px}.fn-enabled{background:#29578a;color:#fff;padding:1px}.selected-equals{outline:1px solid #344a2b;outline-offset:2px}.field-display>strong{display:block;font-size:11px;margin-bottom:6px}.field-display>div{min-height:21px;line-height:21px}.lcd-tabs{display:flex;gap:3px;background:#e4ecdc;border-bottom:1px solid #c8d4bc;line-height:22px;margin-bottom:5px;font-size:9px}.lcd-tabs>span{padding:0 4px}.lcd-tabs>.selected{background:#2b4429;color:#fff}.lcd-menu-item{font-size:10px;line-height:21px;padding:0 5px}.lcd-menu-item.selected{background:#dfe9d5}.graph-display{height:100%}.plot{width:100%;height:calc(100% - 21px);display:block}.graph-footer{padding:2px 4px;display:flex;align-items:center;white-space:nowrap;overflow:hidden;height:21px;font-size:9px}.table-row{display:grid;grid-template-columns:1fr 1fr;text-align:center;min-height:23px;font-size:10px}.table-row>span,.table-row>b{padding:4px;border-right:1px solid #bdcdb0}.table-row:first-child{border-bottom:1px solid #b4c6a5;background:#e4edda}.list-row{display:grid;grid-template-columns:repeat(3,1fr);min-height:23px;font-size:10px}.list-row>span,.list-row>b{padding:4px;text-align:right;overflow:hidden;min-width:0;border-right:1px solid #c1d1b3}.list-row>b{text-align:center;background:#e7efde;border-bottom:1px solid #c1d1b3;font-weight:400}.selected-list{background:#dce8cf;outline:1px solid #a2b48c;outline-offset:-1px}.list-entry-label{height:24px;border-top:1px solid #c1d1b3;padding:4px;white-space:nowrap;display:flex;align-items:center;font-size:10px}.statistics-display{padding:5px 7px;font-size:11px;line-height:22px}.statistics-display>b{font-size:11px}.statistics-display>div{display:grid;grid-template-columns:38px 1fr;line-height:22px}.error-display{padding:9px;font-size:11px}.error-display>b{font-size:13px}.error-display p{font-size:10px;line-height:1.7;margin-top:12px}.error-display>span{display:block;font-size:9px;margin-top:16px}.toast{position:fixed;z-index:110;left:50%;bottom:25px;transform:translate(-36%);max-width:550px;width:calc(100% - 48px);display:flex;align-items:flex-start;gap:10px;background:#fff;border:1px solid #d5e3c7;box-shadow:0 10px 50px #1e3e2926;border-radius:10px;padding:17px 18px;font-size:12px;line-height:1.7;color:#667e52}.toast>svg{flex-shrink:0;margin-top:1px}.toast>button{margin-left:auto;align-self:center;background:none;border:0;padding:0;color:#849c70}.storage-warning{background:#fbf1d9;border:1px solid #ead9a6;padding:12px 15px;font-size:11px;line-height:1.8;color:#a18b4d;border-radius:6px;margin-bottom:20px}.modal-backdrop{position:fixed;inset:0;z-index:90;padding:30px;display:flex;align-items:center;justify-content:center;background:#1b332480;backdrop-filter:blur(5px)}.modal{position:relative;max-height:calc(100dvh - 60px);width:550px;max-width:100%;overflow:auto;padding:35px;background:#fafcf6;border:1px solid #dfe9d2;border-radius:16px;box-shadow:0 35px 100px #11271c40}.modal-close{position:absolute;top:16px;right:16px}.modal h2{font-size:25px;letter-spacing:-.8px;line-height:1.45;margin:3px 20px 13px 0}.modal>p{font-size:12px;line-height:1.8;color:#81986c;margin-bottom:23px}.modal>small{font-size:9px;line-height:1.8;display:block;color:#92a87c;margin-top:20px}.shortcut-list>div{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 0;border-top:1px solid #e1ebd5;color:#809b6b;font-size:11px}.shortcut-list kbd{font-family:inherit;font-size:10px;padding:5px 7px;border:1px solid #d7e4c8;background:#fff;color:#718b59;border-radius:4px}.note-box{display:flex;align-items:flex-start;gap:9px;padding:14px;background:#edf5e2;border:1px solid #dbe9cb;border-radius:7px;font-size:10px;color:#8ba373;line-height:1.8;margin-top:20px}.note-box>svg{flex-shrink:0}.about-capabilities h3{font-size:12px;color:#77955d;margin:22px 0 8px}.about-capabilities p{font-size:11px;line-height:1.85;color:#839c6d}.settings-actions>button{display:flex;align-items:center;gap:15px;width:100%;text-align:left;padding:17px;background:#fff;border:1px solid #dce7d0;border-radius:8px;margin:11px 0;color:#8ca775}.settings-actions>button>span{flex:1}.settings-actions b{font-size:12px;display:block;font-weight:500;color:#75915e}.settings-actions small{font-size:9px;display:block;color:#9bb186;margin-top:5px}.settings-actions .danger{color:#b89577;margin-top:25px}.settings-actions .danger b{color:#b89577}.path-modal{width:780px}.path-groups{display:grid;grid-template-columns:1fr 1fr;gap:24px}.path-groups h3{display:flex;align-items:center;gap:8px;font-size:12px;color:#85a066;margin-bottom:12px}.path-groups section>button,.search-results>button{display:flex;align-items:center;gap:10px;width:100%;text-align:left;background:none;border:0;border-top:1px solid #e2ecd7;padding:12px 0}.path-groups section>button:hover,.search-results>button:hover{color:#7da45e}.path-groups section>button>span{display:grid;place-items:center;width:25px;min-width:25px;height:25px;border:1px solid #deead1;border-radius:50%;font-size:8px;color:#a1b58c}.path-groups section>button>div,.search-results>button>div{flex:1}.path-groups b,.search-results b{display:block;font-size:11px;font-weight:500}.path-groups small,.search-results small{display:block;font-size:8px;color:#9bb185;margin-top:5px}.path-groups section>button>svg,.search-results>button>svg{color:#a2bb8d;flex-shrink:0}.path-groups section>button>.path-done{background:#e2f0d2;color:#85a961}.search-results{max-height:55vh;overflow:auto}.search-results>button>span{font-size:9px;padding:6px;background:#eaf3dd;color:#94b178;border-radius:4px}.reference-steps{margin:15px 0 28px}.reference-steps>div{display:flex;align-items:flex-start;gap:12px;padding:15px 0;border-top:1px solid #dfead2}.reference-steps>div>span{display:grid;place-items:center;width:25px;min-width:25px;height:25px;border-radius:50%;background:#e7f1da;color:#91ab74;font-size:10px}.reference-steps b{font-size:12px;font-weight:500}.reference-steps p{font-size:11px;line-height:1.8;color:#8fa779;margin-top:8px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.expanded-calculator .calculator-lab{position:fixed;inset:15px;z-index:70;box-shadow:0 0 0 30px #182b1ca6}.expanded-calculator .calculator-stage{padding:10px;overflow:auto}.expanded-calculator .calculator-body{width:340px}.expanded-calculator .calc-key{height:42px}.expanded-calculator .top-key-row .calc-key{height:39px}.expanded-calculator .modifier-grid .calc-key{height:38px}.expanded-calculator .lab-bottom,.expanded-calculator .lab-header{flex-shrink:0}@keyframes blink{0%,48%{opacity:1}49%,to{opacity:0}}@media(min-width:1500px){.calculator-body{width:335px}.calc-key{height:42px}.key-face{height:30px}.modifier-grid .calc-key{height:38px}.top-key-row .calc-key{height:39px}.top-key-row .key-face{height:26px}.dpad{height:74px}.lesson-panel{padding:30px 30px 0}.lesson-panel-footer{margin:0 -30px}.lesson-panel h2{font-size:29px}.instruction-card{padding:21px 18px;min-height:160px}.instruction-card p{font-size:12px}.instruction-card h3{font-size:15px}.why-card p{font-size:11px}.page-heading h1{font-size:38px}.page-heading p{font-size:12px}.module-tabs>button{font-size:12px}}@media(max-width:1150px){.sidebar{width:190px;padding:27px 13px 0}.brand{font-size:24px;gap:8px}.sidebar-caption{font-size:5.5px;letter-spacing:.9px}.nav-item{font-size:10px;gap:9px;padding:13px 11px}.sidebar-path{margin-left:10px;margin-right:10px}.guest-profile{width:calc(100% + 26px);margin-left:-13px;padding:17px 13px;gap:7px}.guest-profile b{font-size:8px}.guest-profile small{font-size:6.5px}.main-shell{margin-left:190px}.topbar{padding:0 24px}.top-actions{gap:11px}main{padding:26px 24px 0}.learning-workspace{grid-template-columns:minmax(315px,1fr) minmax(282px,1fr);gap:17px}.calculator-body{width:288px;padding:14px 13px 10px}.calculator-stage{padding:6px 12px 20px}.calc-key{height:36px}.key-face{height:26px}.key-legends{font-size:6px}.top-key-row .key-face{font-size:6.8px}.top-key-row .key-legends{font-size:5px}.lesson-panel{padding:22px 20px 0}.lesson-panel-footer{margin:0 -20px;padding-left:15px;padding-right:15px}.lesson-panel h2{font-size:23px}.instruction-card{padding:16px 12px;gap:8px}.instruction-card p{font-size:10.5px}.instruction-card h3{font-size:12px}.lab-header>span{font-size:7px}.lab-bottom{font-size:6.5px;padding:11px}.lab-bottom button{font-size:6.5px}.module-tabs>button{font-size:10px;padding:11px 9px 14px;gap:6px}.module-strip>.text-button{font-size:8px}.heading-progress{display:none}.page-heading h1{font-size:29px}.page-heading p{font-size:10px}.lesson-card{padding:14px}.lesson-card h3{font-size:11px}.progress-modules{gap:15px}.progress-modules>section{padding:18px 15px}.progress-modules small{display:none}}@media(max-width:900px){.sidebar{width:76px;padding:26px 10px 0}.brand{padding-left:12px}.brand>span,.sidebar-caption,.nav-label,.nav-item>span,.sidebar-path,.encouragement,.guest-profile>span:nth-child(2),.guest-profile>svg{display:none}.sidebar nav{margin-top:45px}.nav-item{justify-content:center;padding:12px;margin-bottom:11px}.guest-profile{width:calc(100% + 20px);margin-left:-10px;padding:20px;justify-content:center}.main-shell{margin-left:76px}.top-actions{gap:12px}.keyboard-button{font-size:8px}.learning-workspace{grid-template-columns:minmax(310px,1fr) minmax(275px,.95fr);gap:16px}.module-strip>.text-button{display:none}.module-tabs{width:100%;gap:0;justify-content:space-between}.module-tabs>button{font-size:10px;padding-left:9px;padding-right:9px}.lesson-panel{padding:20px 18px 0}.lesson-panel-footer{margin-left:-18px;margin-right:-18px;font-size:6.5px}.lesson-meta{font-size:7px;gap:6px;letter-spacing:.5px}.difficulty{font-size:7px}.instruction-card{padding:15px 11px;gap:7px}.instruction-number{width:19px;min-width:19px;height:19px;font-size:7px}.instruction-card p{font-size:10px}.instruction-card h3{font-size:11px}.key-sequence kbd{font-size:8px;min-width:18px;padding:0 5px}.key-sequence{gap:3px}.key-sequence>span{gap:3px}.step-meta{font-size:7px}.step-meta>span:last-child{font-size:8px}.demonstrate-button{font-size:8px}.demonstrate-button>span{font-size:7px}.why-card p,.why-card b{font-size:9px}.reference-card{padding:18px;gap:10px}.reference-card h3{font-size:12px}.progress-stats{gap:14px}.progress-stats>div{padding:18px}.progress-stats p{font-size:9px}.explore-panel{padding:23px}.explore-panel h2{font-size:25px}}@media(max-width:720px){.sidebar{display:none;width:226px;padding:28px 19px 0;box-shadow:15px 0 100px #1837225c}.sidebar.mobile-open{display:flex}.mobile-open .brand{padding-left:9px}.mobile-open .brand>span,.mobile-open .sidebar-caption,.mobile-open .nav-label,.mobile-open .nav-item>span,.mobile-open .sidebar-path,.mobile-open .guest-profile>span:nth-child(2),.mobile-open .guest-profile>svg{display:initial}.mobile-open .encouragement{display:flex}.mobile-open .sidebar-caption{font-size:6.5px;margin-bottom:40px}.mobile-open nav{margin-top:0}.mobile-open .nav-item{justify-content:flex-start;font-size:12px;gap:12px}.mobile-open .guest-profile{width:calc(100% + 38px);margin-left:-19px;padding:20px 19px}.main-shell{margin-left:0}.topbar{height:60px;padding:0 18px}.breadcrumb{gap:8px;font-size:9px}.mobile-toggle{display:flex;margin-left:-5px}.keyboard-button,.top-actions>.icon-button:last-child{display:none}.top-actions{gap:8px}.model-tag{font-size:8px;padding:6px;gap:5px}.model-tag>svg{display:none}main{padding:27px 18px 0}.page-heading h1{font-size:27px;letter-spacing:-1px}.page-heading p{font-size:11px;max-width:360px}.eyebrow{font-size:7px;letter-spacing:1.3px}.module-strip{margin-bottom:17px;overflow:auto}.module-tabs>button{font-size:9px;padding:10px 7px 14px;gap:5px;white-space:nowrap}.module-tabs>button>svg{width:13px}.module-tabs>button>span{font-size:7px;padding:0 4px}.learning-workspace{display:flex;flex-direction:column;gap:17px}.calculator-lab{order:1}.lesson-panel{order:0;padding:21px 21px 0}.lesson-meta{font-size:8px;letter-spacing:.8px;margin-bottom:12px}.difficulty{font-size:8px}.lesson-panel h2{font-size:25px}.lesson-time{font-size:9px;margin-top:8px}.lesson-progress{margin:18px 0 19px}.step-meta{font-size:8px}.instruction-card{padding:16px;gap:10px;min-height:0}.instruction-number{width:23px;min-width:23px;height:23px;font-size:8px}.instruction-card h3{font-size:13px}.instruction-card p{font-size:12px;line-height:1.75}.key-sequence{gap:4px;margin-top:14px}.key-sequence>span{gap:4px}.key-sequence kbd{height:26px;line-height:24px;min-width:23px;padding:0 7px;font-size:10px}.listening{font-size:9px;margin:12px 0 14px}.next-step{height:43px;font-size:12px}.lesson-tools{margin:9px 0}.lesson-tools>button{font-size:10px;padding:8px 0}.demonstrate-button{font-size:10px;padding:11px 5px;margin-bottom:16px}.demonstrate-button>span{font-size:8px}.why-card{display:none}.lesson-panel-footer{margin:0 -21px;padding:11px 17px;font-size:7px}.calculator-body{width:324px;padding:16px 15px 10px}.calc-key{height:42px}.key-face{height:30px}.top-key-row .calc-key{height:39px}.top-key-row .key-face{height:26px;font-size:8px}.top-key-row .key-legends{font-size:6px}.modifier-grid .calc-key{height:39px}.modifier-grid .key-face{height:27px}.dpad{height:74px}.science-keys{gap:2px 7px}.key-legends{font-size:6.9px}.calculator-brand{font-size:14px}.calculator-stage{padding:8px 12px 26px}.lab-header{padding:15px 18px 10px}.lab-header>span{font-size:8px}.lab-bottom{font-size:8px;padding:13px 15px}.lab-bottom button{font-size:8px}.workspace-under{align-items:flex-start;margin-top:13px}.workspace-under>.text-button{display:none}.key-history{gap:4px}.lesson-cards{grid-template-columns:1fr;gap:12px}.lesson-card{padding:18px}.lesson-card h3{font-size:15px}.lesson-card p{font-size:11px}.lesson-card>small{font-size:8px}.lesson-card-top>span:last-child{font-size:10px}.card-bottom{font-size:10px;padding-top:13px}.section-title h2{font-size:19px}.page-footer{flex-direction:column;align-items:flex-start;gap:12px;font-size:8px;margin-top:25px}.page-heading>.secondary-button{font-size:8px;padding:9px;white-space:nowrap}.explore-panel{order:2;padding:25px}.explore-panel h2{font-size:28px}.explore-panel>.primary-button{height:44px}.reference-grid{grid-template-columns:1fr}.reference-card{padding:22px;gap:15px}.reference-card h3{font-size:14px}.reference-card p{font-size:11px}.reference-search{padding:12px}.reference-search input{font-size:11px}.reference-search kbd{display:none}.progress-stats{gap:9px}.progress-stats>div{padding:14px 10px;border-radius:8px}.progress-stats b{font-size:26px}.progress-stats em{font-size:13px;margin-left:2px}.progress-stats svg{margin-bottom:18px}.progress-stats p{font-size:8px;line-height:1.6}.progress-modules{grid-template-columns:1fr;gap:15px}.progress-modules>section{padding:20px}.progress-modules>section>button{font-size:11px;padding:15px 0}.modal-backdrop{padding:15px}.modal{padding:28px 24px;max-height:calc(100dvh - 30px);border-radius:13px}.modal h2{font-size:23px}.modal>p{font-size:11px}.path-groups{grid-template-columns:1fr;gap:22px}.path-groups b{font-size:12px}.path-groups small{font-size:9px}.path-groups section>button{padding:14px 0}.path-groups h3{font-size:14px}.toast{left:18px;right:18px;bottom:18px;width:auto;transform:none;font-size:11px}.completion-panel{padding:15px 0 22px}.completion-panel p{font-size:11px}.completion-panel h3{font-size:23px}.completion-panel .primary-button{height:45px}.quiz-panel{padding-bottom:20px}.quiz-panel>button{font-size:12px;padding:14px 11px}.expanded-calculator .calculator-body{width:324px;margin-top:12px}.expanded-calculator .calculator-stage{align-items:flex-start}.expanded-calculator .calculator-lab{inset:9px}.reference-steps .key-sequence kbd{font-size:9px}}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}.nav-count{margin-left:auto;min-width:18px;height:18px;padding:0 5px;border-radius:9px;background:#d9a441;color:#fff;font-size:10px;font-weight:600;display:grid;place-items:center}.nav-item.active .nav-count{background:#fff;color:var(--green)}.preview-badge{font-size:8px;letter-spacing:.3px;color:#8a6d2f;background:#fbf1d9;border:1px solid #ead9a6;border-radius:10px;padding:2px 7px;cursor:help}.lesson-tools{flex-wrap:wrap;gap:4px 12px}.lesson-tools>button:disabled{opacity:.45;cursor:not-allowed}.hint-box ol{margin:0;padding-left:16px;display:grid;gap:6px}.hint-box li b{color:#8a6d2f;font-weight:600}.completion-panel>.new-numbers{width:100%;margin-bottom:10px;font-size:11px}.retained{opacity:.7}.review-page{display:grid;grid-template-columns:minmax(0,1fr);gap:20px;max-width:820px}.review-section{background:#fff;border:1px solid #dfe8d3;border-radius:12px;padding:20px 22px}.review-section h2{font-size:16px;margin-bottom:8px}.review-row{display:flex;align-items:center;gap:12px;width:100%;text-align:left;background:none;border:0;border-top:1px solid #edf3e3;padding:14px 0;font-size:12px;color:inherit}button.review-row:hover{color:#769e55}.review-row.muted{color:#8b9a7c}.review-text{display:grid;gap:3px}.review-text small{font-size:10px;color:#94a582}.review-cta{margin-left:auto;display:flex;align-items:center;gap:6px;font-size:11px;color:var(--green);font-weight:600}.empty-note,.review-note{font-size:12px;line-height:1.7;color:#7c8b70}.compat-page{display:grid;grid-template-columns:minmax(0,1fr);gap:20px}.compat-reference{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.compat-reference>div{background:#fff;border:1px solid #dfe8d3;border-radius:12px;padding:16px 18px;display:grid;gap:5px;align-content:start}.compat-reference small{font-size:10px;letter-spacing:.6px;text-transform:uppercase;color:#94a582}.compat-reference b{font-size:14px}.compat-reference span{font-size:11px;line-height:1.6;color:#8a6d2f}.compat-reference code,.compat-group code{display:block;font-size:10px;color:#94a582;margin-top:3px;overflow-wrap:anywhere}.compat-group{background:#fff;border:1px solid #dfe8d3;border-radius:12px;padding:18px 20px}.compat-group h2{font-size:15px;margin-bottom:10px}.compat-table-wrap{overflow-x:auto}.compat-group table{width:100%;border-collapse:collapse;font-size:11.5px;line-height:1.6;min-width:560px}.compat-group th{text-align:left;font-size:10px;letter-spacing:.5px;text-transform:uppercase;color:#94a582;font-weight:500;padding:6px 10px 6px 0;border-bottom:1px solid #edf3e3}.compat-group td{vertical-align:top;padding:10px 10px 10px 0;border-bottom:1px solid #f1f5ea}.compat-group td:first-child{width:30%}.compat-group td:last-child{width:14%;color:#7c8b70}.status-chip{display:inline-block;white-space:nowrap;font-size:10px;padding:2px 8px;border-radius:10px;border:1px solid}.status-chip:before{margin-right:4px}.status-verified{color:#2f6b3f;background:#e5f1d6;border-color:#c5dcae}.status-verified:before{content:"✓"}.status-implemented-unverified{color:#4d5e43;background:#f1f4ec;border-color:#d9e2cf}.status-implemented-unverified:before{content:"○"}.status-approximate{color:#8a6d2f;background:#fbf1d9;border-color:#ead9a6}.status-approximate:before{content:"≈"}.status-unsupported{color:#8c4a3c;background:#f8e7e2;border-color:#e8c8bf}.status-unsupported:before{content:"×"}@media(max-width:900px){.compat-reference{grid-template-columns:1fr}}@media(max-width:720px){.review-section,.compat-group{padding:16px}.lesson-tools>button{font-size:11px}}@media(max-width:720px){.compat-group table{min-width:0}.compat-group thead{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}.compat-group table,.compat-group tbody,.compat-group tr,.compat-group td{display:block;width:auto!important}.compat-group tr{padding:12px 0;border-bottom:1px solid #edf3e3}.compat-group td{border:0;padding:3px 0}.compat-group td[data-label]:before{content:attr(data-label) ": ";font-size:10px;letter-spacing:.4px;text-transform:uppercase;color:#94a582}}