:root{--bench:#f2f6fa;--card:#fff;--ink:#1d2b45;--ink-soft:#4e5d78;--ink-faint:#697b99;--bulb:#ffc02e;--blue:#2e7cf6;--green:#2fbf71;--red:#ff5a45;--line:#c3cedd;--shadow:4px 5px 0 var(--ink);color:var(--ink);background:var(--bench);font-synthesis:none;text-rendering:optimizeLegibility;scroll-behavior:smooth;--buncss-light:initial;--buncss-dark: ;color-scheme:light;font-family:Noto Sans SC,sans-serif}*{box-sizing:border-box}body{margin:0}button,input{font:inherit}button,a,input{-webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit}button:disabled{cursor:not-allowed;opacity:.45}a{color:inherit;text-decoration:none}button{touch-action:manipulation}button:focus-visible{outline:3px solid var(--blue);outline-offset:5px}a:focus-visible{outline:3px solid var(--blue);outline-offset:5px}summary:focus-visible{outline:3px solid var(--blue);outline-offset:5px}input:focus-visible{outline:3px solid var(--blue);outline-offset:5px}button:focus:not(:focus-visible){outline:none}::selection{background:var(--bulb);color:var(--ink)}p{line-height:1.8}h1,h2,h3,p{margin:0}h1,h2{text-wrap:balance;font-family:ZCOOL KuaiLe,Fredoka,sans-serif;font-weight:400}html[lang=en] h1,html[lang=en] h2{font-family:Fredoka,sans-serif;font-weight:500}h1{font-size:clamp(36px,3.8vw,56px);line-height:1.35}h2{font-size:38px;line-height:1.35}h3{font-size:19px;line-height:1.6}small{line-height:1.6}.muted{color:var(--ink-faint)}.section-width{width:min(1200px,100% - 96px);margin-inline-start:auto;margin-inline-end:auto}.panel{border:2.5px solid var(--ink);box-shadow:var(--shadow);background:#fff;border-radius:24px}.button{display:inline-flex;border:2px solid var(--ink);box-shadow:0 4px 0 var(--ink);border-radius:999px;justify-content:center;align-items: center;gap:11px;min-height:50px;padding:15px 24px;transition:transform .16s,box-shadow .16s,background .16s;font-size:15px;font-weight:700;line-height:1.5}@media (hover:hover) and (pointer:fine){.button:not(:disabled):hover{box-shadow:0 6px 0 var(--ink);transform:translateY(-2px)}}.button:not(:disabled):active{box-shadow:0 1px 0 var(--ink);transform:translateY(3px)}.button-primary{background:var(--blue);color:#fff}.button-yellow{background:var(--bulb)}.button-plain{background:#fff}.button-dark{background:var(--ink);color:#fff}.icon-button{display:inline-flex;background:0 0;border:0;border-radius:50%;flex-shrink:0;justify-content:center;align-items: center;width:40px;min-height:40px}.icon-button:hover,.language-button:hover{background:#e9eef4}.text-link{display:inline-flex;text-underline-offset:5px;background:0 0;border:0;align-items: center;gap:8px;padding:8px 0;font-size:14px;font-weight:600}.text-link:hover{text-decoration:underline}.brand{display:inline-flex;white-space:nowrap;align-items: center;gap:10px;font-family:Fredoka,sans-serif;font-size:29px;font-weight:600}.brand-symbol{display:grid;background:var(--bulb);border:2px solid var(--ink);box-shadow:2px 2px 0 var(--ink);border-radius:12px;place-items: center;width:39px;height:39px;transform:rotate(-7deg)}.brand-dot{color:var(--blue)}.site-header{height:96px}.header-inner{display:flex;justify-content:space-between;align-items: center;gap:24px;width:min(1200px,100% - 96px);height:100%;margin:auto}.desktop-nav{display:flex;color:var(--ink-soft);gap:32px;font-size:14px}.desktop-nav a:hover{color:var(--blue)}.header-actions{display:flex;align-items: center;gap:18px}.header-actions .button{min-height:45px;padding:10px 20px;font-size:13px}.language-button{display:flex;background:0 0;border:0;align-items: center;gap:6px;min-height:44px;padding:10px 5px;font-size:13px}.account-link{display:flex;background:0 0;border:0;align-items: center;gap:6px;min-height:44px;font-size:13px}.hero{display:grid;grid-template-columns:1fr 1fr;align-items: center;gap:70px;padding-block-start:75px;padding-block-end:87px}.hero-copy h1{letter-spacing:-.025em;font-size:48px;line-height:1.48}.underline-yellow{background:linear-gradient(#0000 76%,#ffc02e 76% 94%,#0000 94%);padding-bottom:2px}.hero-description{color:var(--ink-soft);max-width:510px;margin-top:26px;font-size:16px}.hero-facts{display:flex;flex-wrap:wrap;gap:10px;margin:25px 0 28px}.hero-facts span{border:1.5px solid var(--ink);box-shadow:0 2px 0 var(--ink);background:#fff;border-radius:99px;padding:6px 11px;font-size:12px}.hero-actions{display:flex;flex-wrap:wrap;align-items: center;gap:24px}.tiny-note{color:var(--ink-faint);margin-top:22px;font-size:11px}.machine-wrap{position:relative;min-width:0;padding-top:22px;padding-bottom:32px}.machine-tab{display:inline-flex;border:2px solid var(--ink);position:absolute;z-index:0;background:#e1edfe;border-radius:9px 9px 0 0;align-items: center;gap:8px;padding:7px 14px;font-size:12px;top:-10px;left:22px;transform:rotate(-4deg)}.mini-machine{position:relative;z-index:1;box-shadow:7px 8px 0 var(--ink);border-radius:23px;padding:16px 24px 19px}.machine-top{display:flex;justify-content:space-between;align-items: center;margin-bottom:10px;font-size:12px;font-weight:500}.machine-top>span{display:flex;align-items: center;gap:9px}.status-light{display:inline-block;background:var(--green);border-radius:50%;width:8px;height:8px;box-shadow:0 0 0 3px #dff5e8}.machine-screen{display:flex;background:var(--ink);color:#fff;position:relative;border-radius:13px;align-items: center;gap:16px;min-height:117px;padding:21px 24px}.screen-formula{white-space:nowrap;font-family:Fredoka,sans-serif;font-size:34px}.screen-formula>span{color:#9baecb;margin-left:10px}.screen-binary{letter-spacing:8px;color:#6ee9a4;margin-left:auto;font-family:Fredoka,sans-serif;font-size:65px;font-weight:500}.screen-caption{position:absolute;color:#b9c7df;display:flex;align-items: center;gap:7px;font-size:10px;bottom:10px;right:25px}.screen-caption b{color:#fff}.mini-circuit{position:relative;height:220px;margin-top:10px}.mini-circuit>svg{position:absolute;overflow:visible;width:100%;height:100%;inset:0}.wire{fill:none;stroke:#c3cedd;stroke-width:4;stroke-linejoin:round;stroke-linecap:round}.wire-hot{stroke:var(--red);stroke-dasharray:9 5;animation:1.8s linear infinite flow}.mini-inputs{position:absolute;display:flex;flex-direction:column;gap:48px;top:20px;left:0}.mini-switch{border:2px solid var(--ink);display:flex;background:#e9eef4;border-radius:12px;justify-content:space-between;align-items: center;width:105px;height:54px;padding:9px;font-family:Fredoka;font-size:20px;font-weight:500;box-shadow:0 3px #c3cedd}.mini-switch>i{display:grid;border:2px solid var(--ink);background:#fff;border-radius:20px;place-items: center;width:35px;height:33px;font-style:normal}.mini-switch.on>i{background:var(--green);color:#fff}.mini-gate{position:absolute;border:2px solid var(--ink);display:flex;box-shadow:0 3px 0 var(--ink);background:#e1edfe;border-radius:14px;flex-direction:column;align-items: center;width:72px;height:80px;top:63px;left:47%}.mini-gate>span{font-family:Fredoka;font-size:41px;line-height:1.25}.mini-gate>small{font-size:10px}.mini-lamps{position:absolute;display:flex;flex-direction:column;gap:12px;top:8px;right:0}.mini-lamps>div{display:flex;flex-direction:column;align-items: center;gap:3px}.bulb-small{display:grid;border:2.5px solid var(--ink);background:#e9eef4;border-radius:50%;place-items: center;width:60px;height:60px}.bulb-small.lit{background:var(--bulb);box-shadow:0 0 25px #ffc02e40}.mini-lamps small{color:var(--ink-soft);font-size:11px}.machine-foot{border-top:1px dashed var(--line);color:var(--ink-soft);display:flex;align-items: center;gap:8px;padding-top:14px;font-size:11px}.handwritten{font-family:ZCOOL KuaiLe;font-size:17px}.machine-note{position:absolute;color:var(--ink-soft);bottom:-6px;right:20px;transform:rotate(-3deg)}.machine-note>span{display:inline-block;vertical-align:middle;margin-left:10px;font-size:35px}.trust-strip{display:flex;color:var(--ink-soft);background:#eaf0f6;border-block-start:1px solid #d8e1ec;border-block-end:1px solid #d8e1ec;justify-content:center;align-items: center;gap:35px;padding:19px 24px;font-size:12px}.trust-strip>span{display:flex;align-items: center;gap:8px}.trust-strip>i{border-left:1px solid #bccbdc;height:16px}.section-heading{text-align:center;max-width:800px;margin:0 auto 42px}.section-heading p{color:var(--ink-soft);margin-top:14px;font-size:15px}.discover-section{padding-block-start:82px;padding-block-end:82px}.discovery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.discovery-card{border:2px solid var(--ink);box-shadow:0 4px 0 var(--ink);background:#fff;border-radius:20px;padding:27px 25px 30px}.feature-icon{display:grid;border:2px solid var(--ink);border-radius:17px;place-items: center;width:57px;height:57px;margin-bottom:20px;transform:rotate(-4deg)}.discovery-card.blue .feature-icon{background:#e1edfe}.discovery-card.yellow .feature-icon{background:#fff3d6}.discovery-card.green .feature-icon{background:#dff5e8}.discovery-card h3{font-size:18px}.discovery-card p{color:var(--ink-soft);margin-top:11px;font-size:13px}.gentle-note{grid-column:1/-1;display:flex;color:var(--ink-soft);justify-content:center;align-items: center;gap:8px;margin-top:8px;font-size:12px}.observe-section{background:var(--ink);color:#fff;padding-block-start:75px;padding-block-end:75px}.observe-layout{display:grid;grid-template-columns:1fr 1.2fr;align-items: center;gap:80px}.outline-lightbulb{display:grid;color:var(--bulb);border:2px solid #53627c;border-radius:50%;place-items: center;width:73px;height:73px;margin-bottom:25px}.observe-layout h2{font-size:37px;line-height:1.5}.observe-layout>div>p{color:#b7c6dc;max-width:390px;margin-top:19px;font-size:14px}.observation-list article{display:flex;border-bottom:1px solid #3a4c68;gap:23px;padding-block-start:20px;padding-block-end:20px}.observation-list article:first-child{padding-top:0}.observation-list article:last-child{border:0}.observation-number{color:var(--bulb);padding-top:3px;font-family:Fredoka;font-size:26px}.observation-list h3{font-size:17px}.observation-list p{color:#b7c6dc;margin-top:7px;font-size:12px}.journey-section{padding-block-start:85px;padding-block-end:85px}.journey-track{display:grid;grid-template-columns:repeat(6,1fr);position:relative;gap:20px}.journey-track:before{content:"";position:absolute;border-top:2px dashed #c3cedd;top:19px;left:10%;right:10%}.journey-step{position:relative;text-align:center;padding-top:0}.journey-number{position:relative;background:var(--bench);display:grid;color:#647894;border:2px solid #a4b4ca;border-radius:50%;place-items: center;width:38px;height:38px;margin:auto auto 20px;font-family:Fredoka}.free-step .journey-number{background:var(--bulb);border-color:var(--ink);color:var(--ink)}.journey-art{border:2px solid var(--ink);box-shadow:3px 4px 0 var(--ink);display:grid;background:#fff;border-radius:17px;place-items: center;width:96px;height:85px;margin:0 auto 20px;transform:rotate(3deg)}.free-step .journey-art{background:var(--bulb);transform:rotate(-5deg)}.journey-art>span{letter-spacing:2px;font-family:Fredoka;font-size:29px}.journey-step h3{font-size:15px}.journey-step p{color:var(--ink-soft);margin:8px 0 15px;font-size:12px}.free-label{display:inline-flex;color:#167a45;background:#dff5e8;border:0;border-radius:20px;align-items: center;gap:8px;padding:7px 12px;font-size:11px;font-weight:700}.route-note{text-align:center;color:var(--ink-soft);margin-top:30px;font-size:12px}.teaching-section{background:#fff;padding-block-start:78px;padding-block-end:78px}.teaching-layout{display:grid;grid-template-columns:1fr 1.1fr;align-items: center;gap:85px}.teaching-layout>div>p{color:var(--ink-soft);max-width:430px;margin:22px 0 26px;font-size:14px}.teaching-points article{display:flex;border-bottom:1px solid #dce4ee;gap:20px;padding:22px 0}.teaching-points article:last-child{border:0}.teaching-points article>span{display:grid;border:1.5px solid var(--ink);background:#fff3d6;border-radius:50%;flex-shrink:0;place-items: center;width:37px;height:37px;font-family:Fredoka;font-size:19px}.teaching-points h3{font-size:17px}.teaching-points p{color:var(--ink-soft);margin-top:8px;font-size:13px}.pricing-section{display:grid;grid-template-columns:1fr .85fr;align-items: center;gap:95px;padding-block-start:90px;padding-block-end:90px}.pricing-section>div>p{color:var(--ink-soft);max-width:430px;margin:23px 0;font-size:14px}.price-card{padding:30px 34px}.price-title{font-size:14px;font-weight:700}.price{margin-top:12px;font-family:Fredoka;font-size:66px;line-height:1.1}.price>span{margin-right:4px;font-size:30px}.price small{color:var(--ink-soft);font-family:inherit;font-size:17px}.price-card>p{margin:13px 0!important;font-size:14px!important}.price-card ul{list-style:none;border-top:1px solid #dce4ee;margin:14px 0;padding:16px 0 0}.price-card li{display:flex;align-items: center;gap:10px;padding:6px 0;font-size:12px}.price-card li svg{color:#167a45}.launch-note{background:#fff3d6;border-radius:10px;margin:18px 0 12px;padding:12px 15px;font-size:12px;line-height:1.7}.price-card>small{color:var(--ink-soft);font-size:10px}.faq-section{display:grid;grid-template-columns:.85fr 1.3fr;gap:60px;padding-bottom:85px}.faq-section h2{font-size:32px}.faq-section details{border-bottom:1px solid var(--line);padding:19px 0}.faq-section summary{display:flex;cursor:pointer;list-style:none;justify-content:space-between;align-items: center;gap:20px;font-size:15px;font-weight:500}.faq-section summary::-webkit-details-marker{display:none}.faq-section summary>svg{flex-shrink:0;transition:transform .2s}.faq-section details[open] summary>svg{transform:rotate(180deg)}.faq-section details p{color:var(--ink-soft);padding:17px 24px 4px 0;font-size:13px}.site-footer{background:var(--ink);color:#fff;display:flex;align-items: center;gap:35px;padding:35px max(48px,50vw - 600px)}.site-footer .brand-symbol{color:var(--ink)}.site-footer p{color:#b7c6dc;flex:1;font-size:12px}.site-footer>span{color:#b7c6dc;font-size:11px}.auth-page{min-height:100vh}.auth-header{display:flex;justify-content:space-between;align-items: center;width:min(1200px,100% - 96px);height:100px;margin:auto}.auth-layout{display:grid;grid-template-columns:1fr 1fr;align-items: center;gap:90px;width:calc(100% - 96px);max-width:1020px;margin:54px auto 80px}.auth-story h1{font-size:43px}.auth-story>p{color:var(--ink-soft);max-width:365px;margin-top:25px;font-size:15px}.auth-bulb{display:grid;background:var(--bulb);border:2.5px solid var(--ink);box-shadow:5px 5px 0 var(--ink);border-radius:28px;place-items: center;width:100px;height:100px;margin-bottom:37px;transform:rotate(-6deg)}.auth-promise{display:flex;color:var(--ink-soft);align-items: center;gap:10px;margin-top:34px;font-size:12px;line-height:1.8}.auth-promise>svg{flex-shrink:0}.auth-form{min-width:0;padding:34px 32px}.form-icon{display:grid;border:1.5px solid var(--ink);background:#e1edfe;border-radius:15px;place-items: center;width:52px;height:52px;margin-bottom:22px}.auth-form h2{font-size:28px}.auth-form>p{color:var(--ink-soft);margin-top:12px;font-size:12px}.auth-form form{margin-top:27px}.auth-form label{display:block;margin:18px 0 9px;font-size:12px;font-weight:600}.auth-form input{color:var(--ink);background:#f7f9fc;border:1.5px solid #b2c0d3;border-radius:11px;width:100%;min-height:49px;padding:13px 14px;font-size:14px}.auth-form input::placeholder{color:#697b99}.password-field{position:relative}.password-field input{padding-right:47px}.password-field button{position:absolute;display:grid;background:0 0;border:0;place-items: center;width:39px;height:39px;top:5px;right:6px}.auth-form form>.button{width:100%;margin-top:24px}.form-note{color:var(--ink-soft);line-height:1.8;margin-top:13px!important;font-size:11px!important}.auth-switch{text-align:center;margin-top:24px!important}.auth-switch>a{color:#2364c5;font-weight:700}.back-link{display:flex;color:var(--ink-soft);justify-content:center;align-items: center;gap:7px;margin-top:26px;font-size:12px}.form-error{background:#fff3d6;border:1px solid #ddbd72;border-radius:10px;padding:12px 14px;line-height:1.8;color:#655019!important;font-size:12px!important}.account-email{overflow-wrap:anywhere;font-size:14px!important}.account-course{background:#f2f6fa;border:1px solid #c3cedd;border-radius:13px;margin:25px 0;padding:20px}.account-course>span{color:var(--ink-soft);font-size:10px}.account-course h3{margin-top:7px}.account-course p{color:var(--ink-soft);margin-top:8px;font-size:12px}.spinning{animation:1s linear infinite spin}@keyframes flow{to{stroke-dashoffset:-28}}@keyframes spin{to{transform:rotate(360deg)}}@media (width>=1500px){.hero{gap:90px}.hero-copy h1{font-size:52px}}@media (width<=1100px){.hero{gap:35px}.hero-copy h1{font-size:38px}.header-actions{gap:10px}.desktop-nav{gap:20px}.section-width,.header-inner{width:calc(100% - 64px)}.hero-description{font-size:14px}.observe-layout,.teaching-layout{gap:45px}.pricing-section{gap:55px}.screen-formula{font-size:28px}.screen-binary{font-size:56px}.machine-screen{padding-inline-start:18px;padding-inline-end:18px}.mini-machine{padding-inline-start:20px;padding-inline-end:20px}.auth-layout{gap:50px}}@media (width<=850px){.desktop-nav{display:none}.hero{grid-template-columns:1fr;gap:57px;max-width:650px;padding-block-start:40px;padding-block-end:60px}.hero-copy h1{font-size:45px}.hero-description{max-width:100%;font-size:16px}.hero-actions{justify-content:flex-start}.machine-wrap{width:100%;max-width:540px;margin:auto}.trust-strip{flex-wrap:wrap;gap:22px;font-size:11px}.trust-strip>i{display:none}.discovery-grid{gap:15px}.discovery-card{padding:22px 17px}.discovery-card h3{font-size:16px}.discover-section{padding-block-start:65px;padding-block-end:65px}.observe-layout,.teaching-layout{grid-template-columns:1fr;gap:35px}.observe-layout>div>p{max-width:none}.outline-lightbulb,.observe-layout h2 br{display:none}.observe-layout h2{font-size:32px}.journey-track{gap:8px}.journey-art{width:75px;height:70px}.journey-step h3{font-size:13px}.journey-step p{font-size:11px}.pricing-section{grid-template-columns:1fr 1fr;gap:35px}.price-card{padding:25px}.pricing-section h2{font-size:31px}.faq-section{grid-template-columns:1fr;gap:20px}.site-footer{flex-wrap:wrap;gap:20px;padding-inline-start:32px;padding-inline-end:32px}.site-footer>span{display:none}.auth-layout{gap:35px;width:calc(100% - 64px)}.auth-story h1{font-size:34px}.auth-form{padding:27px 23px}.auth-header{width:calc(100% - 64px)}.auth-layout{margin-top:25px}}@media (width<=580px){.section-width,.header-inner{width:calc(100% - 40px)}.site-header{height:79px}.brand{gap:8px;font-size:25px}.brand-symbol{border-radius:10px;width:32px;height:32px}.brand-symbol svg{width:20px}.header-inner{gap:8px}.header-actions{gap:9px}.header-actions>.button{display:none}.account-link{padding:8px 0;font-size:12px}.account-link svg{display:none}.language-button{gap:4px;font-size:12px}.language-button svg{width:15px}.hero{gap:45px;padding-top:30px;padding-bottom:50px}.hero-copy h1{font-size:35px;line-height:1.55}.hero-description{margin-top:20px;font-size:14px;line-height:1.9}.hero-facts{gap:7px;margin:22px 0}.hero-facts span{padding:5px 9px;font-size:10px}.hero-actions{gap:17px}.hero-actions .button{padding:13px 17px;font-size:13px}.hero-actions .text-link{font-size:11px}.tiny-note{margin-top:18px;font-size:10px}.machine-wrap{padding-bottom:30px}.machine-tab{font-size:10px;left:17px}.mini-machine{box-shadow:5px 6px 0 var(--ink);border-radius:20px;padding:13px 18px 17px}.machine-top{font-size:10px}.machine-screen{min-height:99px;padding:13px 17px}.screen-formula{font-size:30px}.screen-binary{font-size:57px}.screen-caption{font-size:9px}.mini-circuit{height:196px}.mini-switch{width:88px;height:48px;padding:7px;font-size:18px}.mini-inputs{gap:40px;top:14px}.mini-gate{width:61px;height:68px;top:53px;left:44%}.mini-gate>span{font-size:34px}.mini-gate>small{font-size:8px}.mini-lamps{gap:11px;top:5px}.bulb-small{width:49px;height:49px}.mini-lamps small{font-size:9px}.machine-foot{gap:6px;font-size:9px}.machine-note{font-size:14px;bottom:-5px;right:7px}.machine-note>span{font-size:28px}.trust-strip{flex-direction:column;align-items: flex-start;gap:12px;padding:20px}.trust-strip>span{justify-content:center;width:100%}.section-heading{text-align:left;margin-bottom:30px}.section-heading h2,h2{font-size:30px}.section-heading p{font-size:13px;line-height:1.8}.discover-section{padding-block-start:53px;padding-block-end:53px}.discovery-grid{grid-template-columns:1fr;gap:18px}.discovery-card{display:grid;grid-template-columns:48px 1fr;gap:7px 17px;padding:23px 23px 25px}.feature-icon{grid-row:1/3;width:48px;height:48px;margin:0}.feature-icon svg{width:26px}.discovery-card h3{font-size:15px}.discovery-card p{margin-top:0;font-size:12px}.gentle-note{align-items: flex-start;margin-top:7px;font-size:11px;line-height:1.8}.gentle-note>svg{flex-shrink:0;margin-top:3px}.observe-section{padding-block-start:50px;padding-block-end:50px}.observe-layout h2{font-size:28px}.observe-layout>div>p{margin-top:12px;font-size:12px}.observation-list article{gap:16px;padding:17px 0}.observation-list h3{font-size:15px}.observation-list p{font-size:12px}.observation-number{font-size:22px}.journey-section{padding-block-start:53px;padding-block-end:53px}.journey-track{grid-template-columns:1fr;gap:0}.journey-track:before{border-top:0;border-left:2px dashed #c3cedd;inset:20px auto 25px 18px}.journey-step{text-align:left;display:grid;grid-template-columns:37px 60px 1fr;align-items: center;column-gap:17px;padding:14px 0}.journey-number{grid-row:1/4;width:37px;height:37px;margin:0}.journey-art{grid-row:1/4;border-radius:12px;width:56px;height:56px;margin:0}.journey-art svg{width:27px}.journey-art>span{letter-spacing:0;font-size:21px}.journey-step h3{font-size:15px}.journey-step p{margin:3px 0;font-size:11px}.journey-step .free-label{justify-self:start;margin-top:5px;padding:5px 10px;font-size:10px}.journey-step>svg{display:none}.route-note{text-align:left;margin-top:22px;font-size:11px}.teaching-section{padding-block-start:50px;padding-block-end:50px}.teaching-layout{gap:17px}.teaching-layout>div>p{margin:18px 0 22px;font-size:13px}.teaching-points article{gap:15px;padding-block-start:19px;padding-block-end:19px}.teaching-points h3{font-size:15px}.teaching-points p{font-size:12px}.pricing-section{grid-template-columns:1fr;gap:36px;padding-block-start:53px;padding-block-end:53px}.pricing-section>div>p{margin:18px 0 22px;font-size:13px}.price-card{padding:27px}.price{font-size:61px}.faq-section{gap:16px;padding-bottom:50px}.faq-section h2{font-size:28px}.faq-section summary{font-size:13px}.faq-section details p{font-size:12px}.site-footer{flex-direction:column;align-items: start;gap:18px;padding:29px 20px}.site-footer p{font-size:11px}.site-footer .brand{font-size:25px}.auth-header{width:calc(100% - 40px);height:82px}.auth-layout{grid-template-columns:1fr;gap:26px;width:calc(100% - 40px);max-width:440px;margin:23px auto 50px}.auth-story{text-align:center}.auth-bulb{border-radius:18px;width:62px;height:62px;margin:0 auto 24px}.auth-bulb svg{width:36px}.auth-story h1{font-size:30px}.auth-story h1 br{display:none}.auth-story>p{max-width:none;margin-top:14px;font-size:12px}.auth-promise{justify-content:center;margin-top:16px;font-size:10px}.auth-form{padding:26px}.auth-form h2{font-size:27px}.form-icon{width:44px;height:44px;margin-bottom:17px}.auth-form>p,.auth-form label{font-size:12px}.auth-form input{font-size:16px}.auth-form form>.button{font-size:14px}}@media (prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;scroll-behavior:auto!important;transition:none!important}}.mini-circuit .wire{vector-effect:non-scaling-stroke}.mini-inputs{justify-content:space-between;gap:0;width:24%;top:10%;bottom:10%}.mini-switch{width:100%;height:26%;min-height:46px}.mini-gate{width:18%;height:36%;top:31%;left:48%}.mini-lamps{justify-content:space-around;gap:0;width:16%;top:0;bottom:0}.mini-lamps>div{justify-content:center;height:42%}.mini-lamps .bulb-small{width:clamp(46px,4.2vw,60px);height:clamp(46px,4.2vw,60px)}.audio-notice{position:fixed;z-index:30;display:flex;border:2px solid var(--ink);box-shadow:0 3px 0 var(--ink);background:#fff3d6;border-radius:14px;align-items: center;gap:14px;max-width:440px;padding:12px 14px 12px 18px;bottom:20px;right:20px}.audio-notice p{font-size:12px;line-height:1.7}.audio-notice button{display:grid;background:0 0;border:0;border-radius:50%;flex-shrink:0;place-items: center;width:38px;height:38px;font-size:23px}.audio-notice button:hover{background:#ffe9b0}@media (width<=580px){.audio-notice{max-width:none;bottom:12px;left:12px;right:12px}}.mini-card-demo{display:grid;gap:12px;padding:20px 0}.mini-card-row{display:flex;justify-content:center;gap:clamp(24px,5vw,56px)}.mini-card-group{display:grid;justify-items:center;gap:8px;font-size:16px}.mini-card-group>b{font-family:Fredoka,sans-serif;font-size:24px}.mini-dot-card{position:relative;display:grid;border:2px solid var(--ink);border-radius:12px;place-items: center;width:80px;height:98px}button.mini-dot-card:hover{transform:translateY(-2px)}.mini-dot-card.face-up{color:var(--ink);background:#fff}.mini-dot-card.face-down{color:#fff;background:var(--ink)}.mini-dot-card>small{position:absolute;font-family:Fredoka,sans-serif;font-size:18px;bottom:6px;right:10px}.mini-dots{display:flex;gap:10px}.mini-dot{display:block;background:var(--ink);border-radius:50%;width:12px;height:12px}.mini-add-symbol{text-align:center;color:var(--ink-soft);font-size:24px}.mini-machine .machine-foot{align-items: flex-start;font-size:16px}.mini-machine .machine-foot>svg{flex:none;margin-top:3px}@media (width>=701px) and (width<=1000px){.journey-track{grid-template-columns:repeat(3,1fr);row-gap:30px}.journey-track:before{display:none}}.site-page .course-main{width:min(1040px,100% - 80px);max-width:1040px;margin:0 auto;padding:52px 0 64px}.site-page .course-main>h1{margin:0 0 16px;font-size:clamp(32px,3.7vw,44px);line-height:1.2}.site-page .course-main>p{color:var(--ink-soft);max-width:68ch;font-size:15px;line-height:1.8}.site-page .course-list{display:grid;grid-template-columns:1fr;list-style:none;gap:0;margin:36px 0 24px;padding:0}.site-page .course-card{display:grid;grid-template-columns:48px minmax(0,1fr)165px auto;border:0;border-top:1px solid var(--line);box-shadow:none;background:0 0;border-radius:0;align-items: center;gap:20px 28px;min-width:0;padding:26px 0}.site-page .course-number{display:flex;color:var(--ink-faint);background:#ebefec;border-radius:50%;justify-content:center;align-items: center;width:38px;height:38px;font-family:Fredoka,sans-serif;font-size:20px;font-weight:500}.site-page .course-available .course-number,.site-page .course-free .course-number{color:var(--blue);background:#e6eefb}.site-page .course-copy{min-width:0}.site-page .course-card h2{text-wrap:initial;margin:0;font-family:inherit;font-size:20px;font-weight:650;line-height:1.4}.site-page .course-copy p{color:var(--ink-soft);margin-top:7px;font-size:13px;line-height:1.7}.site-page .course-badges{display:flex;color:var(--ink-faint);flex-wrap:wrap;align-content: center;gap:8px 14px;margin:0}.site-page .course-badges span{display:inline-flex;align-items: center;gap:6px;font-size:12px;line-height:1.5}.site-page .course-badges svg{flex-shrink:0;width:15px}.site-page .course-badges .course-completed{color:#287342}.site-page .course-badges .course-ready{color:var(--blue)}.site-page .course-available .button{color:var(--blue);background:#edf3fb;border-color:#b7cdee}.site-page .course-card .button{white-space:nowrap;padding:11px 16px;font-size:13px}.site-page .purchase-intro{max-width:62ch}.site-page .purchase-layout{display:grid;grid-template-columns:minmax(0,1fr)360px;align-items: start;gap:80px;margin-top:36px}.site-page .purchase-lessons{list-style:none;margin:0;padding:0}.site-page .purchase-lessons li{display:flex;border-bottom:1px solid var(--line);gap:18px;padding:22px 0}.site-page .purchase-lessons li:first-child{padding-top:6px}.site-page .purchase-lessons svg{color:#287342;flex-shrink:0;margin-top:4px}.site-page .purchase-lessons h2{text-wrap:initial;font-family:inherit;font-size:17px;font-weight:650;line-height:1.5}.site-page .purchase-lessons p{color:var(--ink-soft);margin-top:5px;font-size:13px;line-height:1.8}.site-page .purchase-summary{position:sticky;background:#fcf3d7;border:1px solid #e1d59f;border-radius:18px;padding:28px;top:32px}.site-page .purchase-summary h2{font-family:inherit;font-size:18px;font-weight:600}.site-page .purchase-summary .purchase-price{margin-top:14px;font-family:Fredoka,sans-serif;font-size:54px;font-weight:500;line-height:1.3}.site-page .purchase-price span{color:var(--ink-soft);font-family:Noto Sans SC,sans-serif;font-size:13px;font-weight:400}.site-page .purchase-summary .purchase-tax{color:var(--ink-soft);margin:8px 0 20px;font-size:12px}.site-page .purchase-summary>p{margin-top:16px;font-size:14px;line-height:1.7}.site-page .purchase-summary [role=note]{background:#f4e5b7}.site-page .purchase-summary>.button{width:100%;margin-top:24px}.site-page .purchase-summary>p:last-child{text-align:center;margin-top:8px}.site-page .purchase-summary [role=status]{border-top:1px solid #dfd3ab;padding:14px 0 0}.site-page .purchase-summary [role=alert] .text-link{display:block}.site-page .checkout-actions{display:flex;flex-wrap:wrap;gap:16px;margin-block-start:24px;margin-block-end:24px}.site-page .account-main,.site-page .utility-main{border:1px solid var(--line);background:#fff;border-radius:20px;flex:none;width:min(500px,100% - 40px);max-width:500px;margin:64px auto 80px;padding:32px}.site-page .account-main>h1,.site-page .utility-main>h1{margin-bottom:28px;font-family:inherit;font-size:28px;font-weight:650}.site-page .account-main form,.site-page .account-details form{display:grid;gap:16px}.site-page .account-main label,.site-page .account-details form label{display:grid;gap:8px;font-size:14px}.site-page .account-main input,.site-page .account-details input[type=password]{font:inherit;width:100%;min-height:48px;padding:10px 12px}.site-page .account-main>p{margin-top:24px;font-size:14px}.site-page .account-details{margin-block-start:24px;margin-block-end:24px}.site-page .account-details h3{margin-top:28px}.site-page .account-orders{list-style:none;padding:0}.site-page .account-orders li{display:grid;border-top:1px solid var(--line);gap:8px;padding-block-start:16px;padding-block-end:16px}.site-page .account-orders code{overflow-wrap:anywhere;font-size:12px}.site-page .account-details details{margin-block-start:24px;margin-block-end:24px}.site-page .account-details summary{cursor:pointer;padding:12px 0}.site-page .account-details form .delete-confirm{display:flex;align-items: flex-start}.site-page .email-preview{border-top:1px solid var(--line);padding-block-start:12px;padding-block-end:12px}.site-page .email-preview pre{font:inherit;white-space:pre-wrap;overflow-wrap:anywhere}.site-page .funnel-table{border-collapse:collapse;width:100%;margin:1rem 0 2rem;font-size:14px}.site-page .funnel-table th,.site-page .funnel-table td{text-align:left;border-bottom:1px solid var(--line);padding:16px 12px}.site-page .funnel-table thead{background:#edf1ed}.site-page .funnel-table tbody th{font-weight:500}.site-page .course-main select{border:1px solid var(--line);font:inherit;background:#fff;border-radius:8px;min-height:44px;margin-top:20px;padding:8px 16px}.site-page .legal-main{display:grid;grid-template-columns:180px minmax(0,1fr);align-items: start;gap:68px;max-width:1040px}.site-page .legal-nav{display:flex;position:sticky;flex-direction:column;gap:4px;padding-top:4px;top:36px}.site-page .legal-nav a{color:var(--ink-soft);border-radius:8px;padding:12px 16px;font-size:14px}.site-page .legal-nav a:hover{color:var(--blue)}.site-page .legal-nav a[aria-current]{color:var(--blue);background:#eaf0f7;font-weight:600}.site-page .legal-content>h1{text-wrap:initial;font-family:inherit;font-size:36px;font-weight:650;line-height:1.3}.site-page .legal-updated{color:var(--ink-faint);margin-top:12px;font-size:12px}.site-page .legal-document{overflow-wrap:anywhere;color:var(--ink-soft);max-width:68ch;margin-block-start:32px;margin-block-end:32px;font-size:15px;line-height:1.85}.site-page .legal-document>p{color:var(--ink);border-bottom:1px solid var(--line);padding-bottom:28px;font-size:16px}.site-page .legal-document section{margin-top:32px}.site-page .legal-document h2{color:var(--ink);text-wrap:initial;margin-bottom:12px;font-family:inherit;font-size:20px;font-weight:650;line-height:1.5}.site-page .legal-document p+p{margin-top:16px}.site-page .legal-document a{color:var(--blue);text-decoration:underline;text-underline-offset:3px}@media (width<=950px){.site-page .course-card{grid-template-columns:42px minmax(0,1fr)auto;gap:12px 20px}.site-page .course-badges{grid-column:2}.site-page .course-card>.button{grid-column:3;grid-row:1/span 2}.site-page .purchase-layout{grid-template-columns:minmax(0,1fr)320px;gap:40px}.site-page .legal-main{grid-template-columns:150px minmax(0,1fr);gap:36px}}@media (width<=700px){.site-page .course-main{width:calc(100% - 40px);padding-block-start:34px;padding-block-end:40px}.site-page .course-main>h1{font-size:34px}.site-page .course-main>p{font-size:14px}.site-page .course-card{gap:10px 16px;padding-block-start:24px;padding-block-end:24px}.site-page .course-card h2{font-size:18px}.site-page .course-number{width:32px;height:32px;font-size:17px}.site-page .course-card .button{padding-inline-start:12px;padding-inline-end:12px;font-size:12px}.site-page .course-card .button svg{width:16px}.site-page .purchase-layout{grid-template-columns:1fr;gap:32px;margin-top:28px}.site-page .purchase-summary{position:static;grid-row:1;padding:24px}.site-page .purchase-lessons li{padding-block-start:20px;padding-block-end:20px}.site-page .account-main,.site-page .utility-main{max-width:500px;margin:36px auto 60px;padding:28px 24px}.site-page .account-main>h1,.site-page .utility-main>h1{font-size:27px}.site-page .legal-main{grid-template-columns:1fr;gap:30px}.site-page .legal-nav{position:static;border-bottom:1px solid var(--line);flex-flow:wrap;gap:4px;padding:0 0 20px}.site-page .legal-nav a{padding:10px 12px;font-size:13px}.site-page .legal-content>h1{font-size:30px}.site-page .legal-document{font-size:14px}.site-page .legal-document>p{font-size:15px}}@media (width<=540px){.site-page .course-page>.course-list{margin-top:28px}.site-page .course-card{grid-template-columns:32px minmax(0,1fr)}.site-page .course-card>.button{grid-column:2;grid-row:auto;justify-self:start;margin-top:2px}.site-page .course-badges{grid-column:2}.site-page .funnel-table{table-layout:fixed;font-size:12px}.site-page .funnel-table th,.site-page .funnel-table td{overflow-wrap:anywhere;padding:10px 5px}.site-page .funnel-table th:first-child{width:54%}}.landing-v2 .hero{grid-template-columns:1.05fr 1fr;align-items: center;gap:72px;padding-block-start:64px;padding-block-end:76px}.landing-v2 .hero h1{letter-spacing:-.025em;text-wrap:balance;font-size:clamp(38px,4.2vw,58px);line-height:1.12}.landing-v2 .hero-description{max-width:460px;margin:24px 0 28px;font-size:16px;line-height:1.85}.landing-v2 .hero-actions{flex-wrap:wrap;gap:12px 26px}.landing-v2 .tiny-note{color:var(--ink-soft);max-width:385px;margin-top:20px;font-size:12px;line-height:1.8}.landing-v2 .machine-wrap{padding:0}.landing-v2 .machine-tab{position:relative;z-index:2;border-width:1.5px;margin-left:22px;padding:7px 13px;font-size:12px;top:auto;left:auto;transform:rotate(-3deg)translateY(3px)}.landing-v2 .mini-machine{border:1.5px solid var(--ink);background:#fff;border-radius:22px;padding:17px 20px 18px;box-shadow:5px 6px #d3dedc}.landing-v2 .machine-top{padding-bottom:0;font-size:11px}.landing-v2 .machine-top .icon-button{width:44px;min-height:44px}.landing-v2 .machine-screen{background:var(--ink);border-radius:12px;min-height:96px;padding:12px 18px}.landing-v2 .screen-formula{font-size:28px}.landing-v2 .screen-binary{font-size:52px}.landing-v2 .screen-caption{font-size:9px}.landing-v2 .mini-card-demo{display:grid;grid-template-columns:1fr 24px 1fr;align-items: center;gap:8px;padding:26px 0 20px}.landing-v2 .mini-card-row{align-items: end;gap:12px}.landing-v2 .mini-card-group{gap:8px}.landing-v2 .mini-card-group>span{white-space:nowrap;font-size:10px;font-weight:500}.landing-v2 .mini-card-group>b{font-size:20px}.landing-v2 .mini-dot-card{box-shadow:2px 3px 0 var(--ink);border-width:1.5px;border-radius:10px;width:62px;height:78px}.landing-v2 .mini-dot-card small{font-size:12px;bottom:5px}.landing-v2 .mini-dot{width:11px;height:11px}.landing-v2 .mini-dot-card>span:not(.mini-dots){font-size:28px}.landing-v2 .mini-add-symbol{padding-top:12px;font-size:25px;transform:rotate(-90deg)}.landing-v2 .mini-result-row{padding-top:23px}.landing-v2 .machine-foot{border-top:1px solid var(--line);gap:7px;padding-top:14px;font-size:11px}.landing-v2 .machine-foot svg{flex-shrink:0}.landing-v2 .machine-note{position:static;display:block;text-align:right;margin:16px 8px 0 0;font-size:14px;transform:none}.landing-v2 .machine-note>span{font-size:22px;line-height:1}.landing-v2 .landing-section{padding-block-start:64px;padding-block-end:64px;scroll-margin-top:24px}.landing-v2 .landing-section h2{letter-spacing:-.02em;margin-bottom:22px;font-size:clamp(29px,3vw,40px);line-height:1.15}.landing-v2 .landing-journey{border-top:1px solid var(--line);display:grid;grid-template-columns:280px 1fr;align-items: start;gap:80px}.landing-v2 .section-intro{position:sticky;padding-top:20px;top:32px}.landing-v2 .course-list{margin:0}.landing-v2 .course-card{grid-template-columns:42px 1fr auto 36px;gap:12px 20px;padding:24px 0}.landing-v2 .course-card:first-child{border-top:0}.landing-v2 .course-card h3{font-size:18px;font-weight:650;line-height:1.4}.landing-v2 .course-card h3 a:hover{color:var(--blue)}.landing-v2 .course-card p{color:var(--ink-soft);margin-top:6px;font-size:13px;line-height:1.7}.landing-v2 .course-access{color:var(--ink-soft);max-width:82px;font-size:11px;line-height:1.6}.landing-v2 .course-free .course-access{color:#216342;background:#e5f1e7;border-radius:6px;padding:4px 10px}.landing-v2 .course-open{display:flex;color:var(--blue);border-radius:50%;justify-content:center;align-items: center;min-width:44px;min-height:44px}.landing-v2 .course-open:hover{background:#edf3fb}.landing-v2 .landing-pricing{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line);align-items: center;gap:90px}.landing-v2 .landing-pricing>div>p{color:var(--ink-soft);font-size:15px;line-height:1.85}.landing-v2 .landing-pricing .text-link{margin-top:18px}.landing-v2 .landing-price-box{box-shadow:none;background:#fcf0c9;border:1px solid #e8d58e;border-radius:18px;padding:30px 34px}.landing-v2 .landing-price-box h3{font-size:18px}.landing-v2 .landing-price-box dl{margin:14px 0 8px}.landing-v2 .landing-price-box dl>div{display:flex;flex-direction:row-reverse;justify-content:flex-end;align-items:baseline;gap:12px}.landing-v2 .landing-price-box dt{color:var(--ink-soft);font-size:13px;font-weight:500}.landing-v2 .landing-price-box dd{margin:0;font-family:Fredoka,sans-serif;font-size:54px;font-weight:500;line-height:1.2}.landing-v2 .landing-price-box>p{font-size:13px}.landing-v2 .landing-price-box [role=note]{background:#f4e4ae;margin-top:18px}.landing-v2 .landing-price-box .button{background:var(--ink);color:#fff;border-color:var(--ink);width:100%;margin-top:24px}.landing-v2 .landing-price-box .button:hover{background:#314a5a}.landing-v2 .landing-faq{border-top:1px solid var(--line);display:grid;grid-template-columns:280px 1fr;align-items: start;gap:80px;max-width:1120px}.landing-v2 .landing-faq h2{margin-top:18px}.landing-v2 .landing-faq details{border-bottom:1px solid var(--line);padding:21px 0}.landing-v2 .landing-faq summary{cursor:pointer;padding-right:8px;font-size:15px;font-weight:600;line-height:1.6}.landing-v2 .landing-faq details p{color:var(--ink-soft);padding:16px 22px 2px;font-size:14px;line-height:1.85}@media (width<=1050px){.landing-v2 .hero{gap:40px}.landing-v2 .mini-machine{padding-inline-start:15px;padding-inline-end:15px}.landing-v2 .mini-card-row{gap:9px}.landing-v2 .mini-dot-card{width:52px;height:70px}.landing-v2 .landing-journey,.landing-v2 .landing-faq{grid-template-columns:230px 1fr;gap:44px}.landing-v2 .course-card{gap:12px}.landing-v2 .landing-pricing{gap:48px}}@media (width<=800px){.landing-v2 .hero{grid-template-columns:1fr;gap:40px;padding-block-start:44px;padding-block-end:56px}.landing-v2 .hero-copy{text-align:left;max-width:540px}.landing-v2 .hero h1{max-width:530px;font-size:46px}.landing-v2 .hero-description{margin-inline-start:0;margin-inline-end:0}.landing-v2 .hero-actions{justify-content:flex-start}.landing-v2 .machine-wrap{justify-self:center;width:min(100%,480px)}.landing-v2 .mini-machine{padding-inline-start:22px;padding-inline-end:22px}.landing-v2 .mini-dot-card{width:64px;height:80px}.landing-v2 .mini-card-row{gap:16px}.landing-v2 .landing-journey,.landing-v2 .landing-faq{grid-template-columns:1fr;gap:10px}.landing-v2 .section-intro{position:static;display:flex;justify-content:space-between;align-items:baseline;gap:24px;padding:0}.landing-v2 .section-intro h2{max-width:360px}.landing-v2 .section-intro .text-link{white-space:nowrap}.landing-v2 .landing-pricing{gap:30px}.landing-v2 .landing-price-box{padding:26px}}@media (width<=540px){.landing-v2 .hero{gap:34px;padding-block-start:34px;padding-block-end:48px}.landing-v2 .hero h1{font-size:39px;line-height:1.12}.landing-v2 .hero-description{margin:20px 0 22px;font-size:15px}.landing-v2 .hero-actions{gap:10px 22px}.landing-v2 .tiny-note{margin-top:14px}.landing-v2 .mini-machine{padding:14px 16px 16px}.landing-v2 .mini-card-demo{grid-template-columns:1fr 20px 1fr;gap:4px}.landing-v2 .mini-card-row{gap:10px}.landing-v2 .mini-dot-card{width:52px;height:70px}.landing-v2 .machine-note{font-size:12px}.landing-v2 .landing-section{padding-block-start:42px;padding-block-end:42px}.landing-v2 .section-intro{display:block}.landing-v2 .section-intro h2{max-width:290px;margin-bottom:8px}.landing-v2 .course-card{grid-template-columns:32px 1fr 34px;gap:10px 14px}.landing-v2 .course-copy{grid-column:2}.landing-v2 .course-card h3{font-size:17px}.landing-v2 .course-access{grid-column:2;justify-self:start;max-width:none}.landing-v2 .course-open{grid-column:3;grid-row:1/span 2}.landing-v2 .landing-pricing{grid-template-columns:1fr}.landing-v2 .landing-faq{gap:0}.landing-v2 .landing-faq details p{padding-inline-start:0;padding-inline-end:0}}@media (width<=360px){.landing-v2 .mini-machine{padding-inline-start:12px;padding-inline-end:12px}.landing-v2 .mini-card-row{gap:7px}.landing-v2 .mini-dot-card{width:44px;height:64px}.landing-v2 .mini-card-group>span{font-size:9px}.landing-v2 .screen-binary{font-size:42px}.landing-v2 .screen-formula{font-size:25px}}.site-page{--bench:#fafaf6;--ink:#203343;--ink-soft:#53616a;--ink-faint:#62717b;--blue:#245cce;--bulb:#f7c94c;--line:#dce2e1;display:flex;background:var(--bench);color:var(--ink);flex-direction:column;min-height:100svh}.site-page>main{flex:1;width:100%}.site-page .section-width{width:min(1120px,100% - 80px)}.site-page .button{box-shadow:none;border:1px solid #0000;border-radius:12px;min-height:48px;padding:12px 21px;transition:background .15s,border-color .15s,transform .15s;font-size:14px;font-weight:600}.site-page .button-primary{background:var(--blue);color:#fff}.site-page .button-plain{color:var(--ink);background:#fff;border-color:#cad3d7}.site-page .button:not(:disabled):hover{box-shadow:none;transform:translateY(-1px)}.site-page .button-primary:not(:disabled):hover{background:#194daf}.site-page .button-plain:not(:disabled):hover{background:#f0f4f5;border-color:#a2b2ba}.site-page .button:not(:disabled):active{transform:translateY(1px)}.site-page .text-link{color:var(--blue);min-height:44px}.site-page a:focus-visible{outline:3px solid var(--blue);outline-offset:4px}.site-page button:focus-visible{outline:3px solid var(--blue);outline-offset:4px}.site-page summary:focus-visible{outline:3px solid var(--blue);outline-offset:4px}.site-page input:focus-visible{outline:3px solid var(--blue);outline-offset:4px}.site-page select:focus-visible{outline:3px solid var(--blue);outline-offset:4px}.site-page .brand{gap:10px;font-size:27px}.site-page .brand-symbol{box-shadow:2px 2px 0 var(--ink);border-width:1.5px;border-radius:10px;width:34px;height:36px}.site-page .brand-symbol svg{width:21px}.site-page .language-button{min-height:44px;padding:8px 10px;font-size:13px}.site-page .page-header{border-bottom:1px solid var(--line);background:0 0;flex-shrink:0}.site-page .page-header-inner{display:flex;justify-content:space-between;align-items: center;gap:28px;width:min(1120px,100% - 80px);min-height:84px;margin:0 auto}.site-page .page-header nav{display:flex;align-items: center;gap:22px}.site-page .page-header-link{display:inline-flex;color:var(--ink-soft);white-space:nowrap;align-items: center;gap:7px;min-height:44px;font-size:14px;font-weight:500}.site-page .page-header-link:hover,.site-page .page-header-link[aria-current]{color:var(--blue)}.site-page .page-header-link[aria-current]{font-weight:650}.site-page .page-start{white-space:nowrap;min-height:44px;padding:10px 16px;font-size:13px}.site-page .site-footer{display:flex;color:var(--ink);border-top:1px solid var(--line);background:#eef1ed;flex-wrap:wrap;align-items: center;gap:22px 36px;margin-top:40px;padding:40px max(40px,50% - 560px) 28px}.site-page .site-footer>p{color:var(--ink-soft);flex:1;font-size:13px}.site-page .site-footer>span{color:var(--ink-soft);font-size:12px}.site-page .legal-links{display:flex;border-top:1px solid #d4dcd8;flex-wrap:wrap;gap:8px 26px;width:100%;padding-top:18px}.site-page .legal-links a{color:var(--ink-soft);overflow-wrap:anywhere;padding-block-start:8px;padding-block-end:8px;font-size:12px}.site-page .legal-links a:last-child{margin-left:auto}.site-page .legal-links a:hover{color:var(--blue);text-decoration:underline;text-underline-offset:4px}.site-page .auth-layout{grid-template-columns:1fr 1fr;align-items: center;gap:88px;width:min(960px,100% - 80px);margin:64px auto 72px}.site-page .auth-story h1{font-size:clamp(30px,3.3vw,42px);line-height:1.22}.site-page .auth-story>p{margin-top:24px;font-size:15px;line-height:1.8}.site-page .auth-bulb{border:1.5px solid var(--ink);box-shadow:3px 3px 0 var(--ink);border-radius:18px;width:70px;height:70px;margin-bottom:30px}.site-page .auth-bulb svg{width:38px}.site-page .auth-promise{color:var(--ink-soft);margin-top:28px;font-size:13px;line-height:1.7}.site-page .auth-promise svg{flex-shrink:0}.site-page .auth-form{border:1px solid var(--line);border-radius:20px;padding:32px;box-shadow:0 10px 35px #20334306}.site-page .auth-form h2{text-wrap:initial;font-family:inherit;font-size:25px;font-weight:650;line-height:1.35}.site-page .auth-form>p{font-size:14px;line-height:1.7}.site-page .form-icon{color:var(--blue);background:#edf3fb;border:0;border-radius:12px;width:44px;height:44px;margin-bottom:20px}.site-page .auth-form form{margin-top:26px}.site-page .auth-form label{font-size:13px;font-weight:600}.site-page .auth-form input,.site-page .account-main input,.site-page .account-details input[type=password]{color:var(--ink);background:#fff;border:1px solid #bac6cb;border-radius:10px;min-height:48px;font-size:16px}.site-page .auth-form input::placeholder{color:#728087}.site-page .auth-form .password-field button{width:44px;height:44px}.site-page .auth-form .button{width:100%}.site-page .auth-form .form-note{font-size:12px;line-height:1.7}.site-page .auth-switch{border-top:1px solid var(--line);margin-top:24px;padding-top:20px}.site-page .auth-form p a,.site-page .account-details a,.site-page .account-main p a{color:var(--blue);text-decoration:underline;text-underline-offset:3px}.site-page .auth-form .back-link{min-height:44px;margin-top:24px;font-size:13px}.site-page [role=alert]{color:#9b3433;background:#fff2ed;border-radius:10px;padding:14px 16px;font-size:14px;line-height:1.7}.site-page [role=note]{color:#665019;background:#fff4d0;border-radius:10px;padding:12px 15px;font-size:13px;line-height:1.6}.site-page.account-mode .auth-layout{display:block;max-width:800px;margin-top:48px}.site-page.account-mode .auth-form{box-shadow:none;background:0 0;border:0;padding:0}.site-page.account-mode .form-icon{float:right;margin-left:16px}.site-page.account-mode .auth-form>h1{font-family:inherit;font-size:32px;font-weight:650;line-height:1.35}.site-page.account-mode .account-email{color:var(--ink-soft);margin-top:10px}.site-page.account-mode .account-course{background:#edf3fb;border:1px solid #d3dfed;border-radius:16px;margin-top:32px;padding:24px 28px}.site-page.account-mode .account-course>span{color:var(--ink-soft);font-size:12px}.site-page.account-mode .account-course h3{margin:10px 0 8px;font-size:22px}.site-page.account-mode .account-course p{font-size:14px}.site-page.account-mode .auth-form>.button{width:auto;margin-top:16px}.site-page.account-mode .account-details{border-top:1px solid var(--line);margin-block-start:32px;margin-block-end:32px;padding-top:4px}.site-page.account-mode .account-details h3{margin:28px 0 8px;font-size:17px}.site-page.account-mode .account-details p{color:var(--ink-soft);font-size:14px}.site-page.account-mode .account-details .button{width:auto;margin-top:12px}.site-page .account-orders li{border-color:var(--line);grid-template-columns:1fr auto;gap:8px 24px;padding-block-start:20px;padding-block-end:20px;font-size:14px}.site-page .account-orders time{color:var(--ink-soft)}.site-page .account-orders code{color:var(--ink-faint)}.site-page .account-orders a{grid-column:2;grid-row:2}.site-page .account-details details{border-top:1px solid var(--line);padding-top:12px}.site-page .account-details summary{color:#87403b;font-size:14px}.site-page .account-details form .delete-confirm input{flex-shrink:0;width:20px;min-height:20px;margin:2px 0 0}@media (width<=1000px){.site-page .auth-layout{gap:44px}}@media (width<=700px){.site-page .section-width,.site-page .page-header-inner{width:calc(100% - 40px)}.site-page .page-header-inner{position:relative;display:grid;grid-template-columns:1fr;gap:8px;padding-block-start:10px;padding-block-end:12px}.site-page .page-header .brand{justify-self:start;min-height:44px}.site-page .brand{gap:8px;font-size:24px}.site-page .brand-symbol{width:30px;height:32px}.site-page .page-header nav{display:flex;flex-wrap:wrap;gap:8px 14px}.site-page .page-header-link{font-size:12px}.site-page .page-header .language-button{position:absolute;gap:5px;padding-inline-start:5px;padding-inline-end:5px;top:10px;right:0}.site-page .page-start{gap:8px;margin-left:auto;padding-inline-start:12px;padding-inline-end:12px;font-size:12px}.site-page .page-start svg{width:16px}.site-page .site-footer{gap:18px;padding:30px 20px 22px}.site-page .site-footer>p{flex-basis:calc(100% - 170px)}.site-page .site-footer>span{display:none}.site-page .legal-links{gap:4px 20px;padding-top:16px}.site-page .legal-links a:last-child{width:100%;margin-left:0}.site-page .auth-layout{display:flex;flex-direction:column-reverse;gap:32px;width:calc(100% - 40px);margin:32px auto 40px}.site-page .auth-story{text-align:left;margin-bottom:30px}.site-page .auth-story h1{font-size:30px}.site-page .auth-story>p{max-width:none;margin:14px 0 0;font-size:14px}.site-page .auth-bulb{display:none}.site-page .auth-promise{margin-top:16px}.site-page .auth-form{width:100%;padding:26px 22px}.site-page .auth-form h2{font-size:23px}.site-page.account-mode .auth-form>h1{font-size:27px}.site-page.account-mode .account-course{padding:22px}.site-page .account-orders li{grid-template-columns:1fr}.site-page .account-orders a{grid-column:auto;grid-row:auto}}@media (prefers-reduced-motion:reduce){.site-page .button{transition:none}}.site-page .learn-main{width:min(1040px,100% - 80px);margin:0 auto;padding:52px 0 76px}.learn-main{overflow-wrap:anywhere;font-size:16px;line-height:1.85}.learn-main h1,.learn-main h2,.learn-main h3{text-wrap:initial;color:var(--ink);font-family:inherit;font-weight:650}.learn-main h1{letter-spacing:-.025em;font-size:clamp(30px,4vw,44px);line-height:1.3}.learn-main h2{font-size:25px;line-height:1.45}.learn-main h3{font-size:19px;line-height:1.5}.learn-eyebrow{color:var(--blue);letter-spacing:.09em;margin-bottom:14px;font-size:12px;font-weight:650}.learn-intro{max-width:760px}.learn-lede{color:var(--ink-soft);margin-top:24px;font-size:18px;line-height:1.85}.learn-group{margin-top:52px}.learn-group>header>p{color:var(--ink-soft);max-width:68ch;margin-top:12px}.learn-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:24px}.learn-card{border:1px solid var(--line);display:flex;background:#fff;border-radius:16px;flex-direction:column;align-items: start;padding:28px}.learn-card h3 a{color:var(--ink)}.learn-card p{color:var(--ink-soft);flex:1;margin-top:15px;font-size:15px;line-height:1.8}.learn-card .text-link{display:inline-flex;align-items: center;gap:10px;margin-top:20px;font-size:14px}.learn-article{max-width:760px;margin:0 auto}.learn-breadcrumb{display:flex;color:var(--ink-faint);align-items: center;gap:12px;margin-bottom:30px;font-size:13px}.learn-main a:not(.button):hover{color:var(--blue);text-decoration:underline;text-underline-offset:4px}.learn-breadcrumb a,.learn-contents a,.learn-related a{color:var(--blue)}.learn-contents{border-block:1px solid var(--line);margin-top:34px;padding:24px 28px}.learn-contents h2{font-size:15px}.learn-contents ul{columns:2;column-gap:36px;margin-top:12px;padding-left:20px;font-size:14px}.learn-contents li{break-inside:avoid;padding-block-start:3px;padding-block-end:3px}.learn-section{color:var(--ink-soft);margin-top:46px;scroll-margin-top:24px}.learn-section h2{margin-bottom:18px}.learn-section p+p,.learn-section ul{margin-top:16px}.learn-section ul{padding-left:24px}.learn-section li{margin-block-start:8px;margin-block-end:8px;padding-left:4px}.learn-figure{border:1px solid var(--line);color:var(--ink);background:#fff;border-radius:16px;margin:28px 0;padding:26px}.learn-figure figcaption{color:var(--ink-soft);margin-top:20px;font-size:13px;line-height:1.8}.learn-diagram-label{display:block;color:var(--ink-soft);margin-bottom:12px;font-size:13px}.learn-card-row{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}.learn-bit-card{display:grid;grid-template-rows:auto 1fr auto;background:#edf0f2;border:1px solid #cbd5da;border-radius:10px;justify-items:center;min-height:154px;padding:10px 6px}.learn-bit-card.is-on{background:#fff2b9;border-color:#d9b449}.learn-bit-card>strong{font-size:18px}.learn-bit-card>span{color:var(--ink-soft);font-family:ui-monospace,monospace;font-size:16px}.learn-dots{display:grid;grid-template-columns:repeat(4,7px);place-content: center;gap:5px;margin:12px 0}.learn-dots i{background:var(--ink);border-radius:50%;width:7px;height:7px}.learn-dots .is-covered{visibility:hidden}.learn-equation{text-align:center;color:var(--ink);margin-top:20px;font-family:ui-monospace,monospace;font-size:clamp(14px,2vw,20px);font-weight:600}.learn-adder-pair{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.learn-adder-example{text-align:center}.learn-adder-example>p:not(.learn-equation){color:var(--ink-soft);margin:14px 0 8px;font-size:12px}.learn-signals{display:flex;flex-wrap:wrap;justify-content:center;gap:6px;font-family:ui-monospace,monospace;font-size:13px}.learn-signals span{background:#edf3fb;border:1px solid #d3e0f5;border-radius:6px;padding:4px 8px}.learn-machine-symbol{color:var(--blue);margin-block-start:10px;margin-block-end:10px;font-size:30px}.learn-adder-example .learn-equation{font-size:14px}.learn-table-scroll{overflow-x:auto;border:1px solid var(--line);background:#fff;border-radius:10px;max-width:100%;margin-top:24px}.learn-main table{border-collapse:collapse;font-variant-numeric:tabular-nums;width:100%;font-size:14px}.learn-main caption{text-align:left;color:var(--ink-soft);padding:16px;font-size:13px}.learn-main td,.learn-main th{text-align:left;border-bottom:1px solid var(--line);padding:11px 14px}.learn-main thead{color:var(--ink);background:#eff3f3}.learn-main tr:last-child td,.learn-main tr:last-child th{border-bottom:0}.learn-column-diagram .learn-equation{margin-top:0}.learn-column-diagram td,.learn-column-diagram th{text-align:center}.learn-column-diagram th:first-child{text-align:left;font-weight:500}.learn-column-diagram td{font-family:ui-monospace,monospace;font-size:17px}.learn-column-diagram .is-one{color:#194daf;background:#edf3fb;font-weight:700}.learn-carry-direction{text-align:center;color:var(--blue);margin-top:14px;font-size:13px}.learn-questions{padding-left:25px}.learn-questions>li{border-bottom:1px solid var(--line);padding:18px 0 20px 8px}.learn-questions>li>p{color:var(--ink)}.learn-questions summary{color:var(--blue);cursor:pointer;width:-moz-fit-content;width:fit-content;min-height:44px;padding-block-start:10px;padding-block-end:10px;font-size:14px}.learn-questions details>p{background:#edf1ed;border-radius:8px;margin:0;padding:14px 18px;font-size:15px}.learn-cta{background:#edf3fb;border-radius:14px;margin-top:48px;padding:28px}.learn-cta h2{font-size:22px}.learn-cta p{color:var(--ink-soft);margin-top:12px}.learn-cta .learn-access-note{font-size:13px}.learn-cta .button{margin-top:22px}.learn-related{margin-top:44px}.learn-related h2{font-size:19px}.learn-related ul{list-style:none;margin-top:15px;padding:0}.learn-related a{display:flex;border-bottom:1px solid var(--line);justify-content:space-between;align-items: center;gap:18px;min-height:52px;padding:10px 0}.learn-related svg{flex-shrink:0}.learn-print-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}.learn-print{display:none}.learn-download{margin-top:24px}.learn-printable-cards .learn-bit-card{grid-template-rows:auto 1fr;background:#fffaf0}.learn-state-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.learn-stage-examples{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.learn-state,.learn-stage-chain>li{border:1px solid var(--line);text-align:center;background:#f6f8fb;border-radius:10px;padding:16px}.learn-state h3,.learn-stage-example>h3{font-family:ui-monospace,monospace;font-size:16px}.learn-state p,.learn-stage-chain p{margin:8px 0 0;font-size:14px}.learn-stage-arrow,.learn-stage-chain span{color:var(--blue)}.learn-stage-chain{display:grid;grid-template-columns:1fr;list-style:none;gap:12px;margin-top:16px;padding:0}.learn-section .learn-stage-chain>li{margin:0;padding:14px 8px}.learn-stage-chain h4{font-size:13px}.learn-wide-equation{font-size:clamp(14px,2.8vw,18px)}@media (width<=700px){.site-page .learn-main{width:calc(100% - 40px);padding-block-start:32px;padding-block-end:52px}.learn-lede{font-size:16px}.learn-grid{grid-template-columns:1fr;gap:16px}.learn-card{padding:24px}.learn-contents{padding:22px 18px}.learn-contents ul{columns:1}.learn-figure{padding:18px 12px}.learn-card-row{gap:5px}.learn-bit-card{min-height:137px;padding-inline-start:2px;padding-inline-end:2px}.learn-dots{grid-template-columns:repeat(4,5px);gap:3px}.learn-dots i{width:5px;height:5px}.learn-stage-examples{grid-template-columns:1fr}.learn-stage-example+.learn-stage-example{border-top:1px solid var(--line);padding-top:24px}.learn-stage-chain{grid-template-columns:1fr;gap:10px}.learn-state-grid{gap:10px}.learn-state{padding:12px 6px}.learn-state h3{font-size:13px}.learn-adder-pair{grid-template-columns:1fr;gap:28px}.learn-main td,.learn-main th{padding:10px 8px}.learn-main table{font-size:12px}.learn-column-diagram td{font-size:15px}}@media print{body.learn-print-questions,body.learn-print-answers{background:#fff}.learn-page .page-header,.learn-page .site-footer,.learn-print-actions,.learn-download,.learn-breadcrumb,.learn-contents,.learn-cta,.learn-related{display:none!important}.site-page.learn-page,.site-page .learn-main{color:#111;display:block;background:#fff;width:100%;margin:0;padding:0}.learn-main h1{font-size:24pt}.learn-main h2{font-size:17pt}.learn-main .learn-print-title{font-size:24pt}.learn-main h3{font-size:13pt}.learn-main{font-size:11pt;line-height:1.6}.learn-main li,.learn-figure{break-inside:avoid}body:-webkit-any(.learn-print-questions,.learn-print-answers) .learn-screen{display:none}body:-moz-any(.learn-print-questions,.learn-print-answers) .learn-screen{display:none}body:is(.learn-print-questions,.learn-print-answers) .learn-screen{display:none}body:-webkit-any(.learn-print-questions,.learn-print-answers) .learn-print{display:block}body:-moz-any(.learn-print-questions,.learn-print-answers) .learn-print{display:block}body:is(.learn-print-questions,.learn-print-answers) .learn-print{display:block}.learn-print section{margin-top:24pt}.learn-print h2,.learn-print h3{break-after:avoid}.learn-print ol{padding-left:24px}.learn-print li{padding:10pt 0}.learn-print-questions .learn-print li{min-height:70pt}.learn-print-questions .learn-print-answer,.learn-print-questions .learn-answer-heading,.learn-print-answers .learn-question-heading{display:none}.learn-print-answer{margin-top:10pt}}.binary-cards-app{--bc-ink:#24364d;--bc-paper:#fffdf5;--bc-yellow:#ffcc56;--card-gap:18px;color:var(--bc-ink);background:#f3f2e9;min-height:100vh}.bc-header{display:flex;border-bottom:1px solid #d8dfd1;justify-content:space-between;align-items: center;max-width:1320px;height:74px;margin:auto;padding:0 34px}.bc-header>div{display:flex;align-items: center;gap:18px}.bc-header a{color:var(--bc-ink)}.bc-main{max-width:1320px;margin:auto;padding:25px 26px 44px}.bc-title{display:flex;justify-content:space-between;align-items: center;margin-bottom:22px}.bc-title h1{letter-spacing:-.025em;margin:8px 0 0;font-size:30px}.bc-route{display:flex;letter-spacing:.1em;color:#6f8273;cursor:pointer;background:0 0;border:0;align-items: center;gap:8px;min-height:30px;padding:0;font-size:11px;font-weight:800}.bc-route.lesson-route{cursor:default}.bc-title,.v2-title,.fa-title{flex-wrap:wrap;gap:10px}.bc-lesson-actions{display:flex;align-items: center;gap:6px;margin-left:auto}.bc-lesson-actions>button,.bc-lesson-actions>a{display:flex;white-space:nowrap;color:#4d6756;cursor:pointer;background:#f5f7ec;border:1px solid #c9d5c1;border-radius:12px;align-items: center;gap:6px;min-height:40px;padding:8px 12px;font-size:13px}.bc-lesson-actions>:-webkit-any(button,a):hover{background:#e8efdd}.bc-lesson-actions>:-moz-any(button,a):hover{background:#e8efdd}.bc-lesson-actions>:is(button,a):hover{background:#e8efdd}.bc-lesson-actions>:-webkit-any(button,a):focus-visible{outline:3px solid #3e718d;outline-offset:2px}.bc-lesson-actions>:-moz-any(button,a):focus-visible{outline:3px solid #3e718d;outline-offset:2px}.bc-lesson-actions>:is(button,a):focus-visible{outline:3px solid #3e718d;outline-offset:2px}.lesson-progress button:focus-visible{outline:3px solid #3e718d;outline-offset:2px}.lesson-progress{display:flex;gap:6px;margin:0 0 14px}.lesson-progress button{position:relative;cursor:pointer;background:0 0;border:0;flex:1;min-width:0;height:32px;padding:0}.lesson-progress button:before{content:"";position:absolute;background:#dfe5d5;border-radius:3px;inset:13px 0}.lesson-progress button.done:before{background:#789a80}.lesson-progress button[aria-current=step]:before{background:#b98529}.lesson-progress button:disabled{cursor:default}.bc-help,.bc-voice{color:#5e796d;display:grid;background:0 0;border:0;border-radius:50%;flex-shrink:0;place-items: center;width:44px;height:44px}.bc-help:hover,.bc-voice:hover{background:#e5ecd9}.bc-table{background:var(--bc-paper);border:2px solid var(--bc-ink);overflow:clip;background-image:radial-gradient(#879f781a 1px,#0000 1px);background-size:20px 20px;border-radius:27px;padding:24px 34px 25px;box-shadow:0 7px #d4dcce}.bc-guide{display:flex;text-align:left;border-bottom:1px solid #e1e5d8;align-items: center;gap:15px;min-height:68px;padding-bottom:17px}.bc-guide>img{object-fit:contain;width:48px;height:56px}.bc-guide>p{flex:1;margin:0;font-size:16px;font-weight:650;line-height:1.65}.bc-start{display:flex;color:#6a8072;justify-content:center;align-items: center;gap:25px;margin:27px 0 5px;font-size:13px}.bc-goal{display:flex;position:relative;z-index:2;justify-content:center;align-items: center;gap:12px;margin:25px 0 -28px;font-size:14px}.bc-goal>strong{display:grid;background:var(--bc-yellow);border:2px solid var(--bc-ink);border-radius:13px;place-items: center;width:49px;height:49px;font-size:28px}.bc-goal>svg{color:#2e9373}.bc-goal-reserved{visibility:hidden}.bc-deck{position:relative;margin:12px 0 8px}.bc-pending-lane{display:grid;grid-template-columns:repeat(var(--card-count,5),minmax(0,1fr));gap:var(--card-gap);position:relative;z-index:3;pointer-events:none;align-items: end;height:92px}.bc-pending-slot{display:flex;position:relative;justify-content:center;align-items: center;gap:5px;height:82px}.bc-pending-dots{background:0 0;border:1px solid #0000;border-radius:12px;width:54px;height:65px}.bc-pending-dots .bc-dots{width:100%;height:100%}.bc-pending-label{position:absolute;color:#85692c;white-space:nowrap;font-size:9px;font-weight:700;top:-3px}.bc-pending-slot>b{color:#947332;font:700 13px monospace}.bc-cards-row{display:grid;grid-template-columns:repeat(var(--card-count,5),minmax(0,1fr));gap:var(--card-gap);perspective:1400px;align-items: start}.bc-card-slot{position:relative;min-width:0}.bc-weight{display:flex;color:#667969;justify-content:center;align-items:baseline;gap:6px;margin-bottom:12px;font:700 23px/1.1 Fredoka,sans-serif}.bc-weight>small{color:#8a9789;font:11px/1.3 inherit}.bc-card{position:relative;display:block;aspect-ratio:.72;perspective:1000px;cursor:pointer;touch-action:manipulation;isolation:isolate;background:0 0;border:0;border-radius:17px;width:100%;padding:0}.bc-card:disabled{opacity:1;cursor:default}.bc-card-rotor{position:relative;transform-style:preserve-3d;will-change:transform;border-radius:17px;width:100%;height:100%}.bc-face{position:absolute;border:2px solid var(--bc-ink);backface-visibility:hidden;-webkit-backface-visibility:hidden;overflow:hidden;border-radius:17px;inset:0;box-shadow:0 5px #1c304c44,1px 8px 14px #1c304c0c}.bc-front{display:grid;background:linear-gradient(115deg,#fffefb,#fffbee);place-items: center;transform:rotateY(0)}.bc-back{display:grid;background:#365578 repeating-linear-gradient(45deg,#ffffff05 0 2px,#0000 2px 10px);place-items: center;transform:rotateY(180deg)}.bc-back-border{position:absolute;border:1px solid #adc8d074;border-radius:10px;inset:9px;box-shadow:inset 0 0 0 3px #a9c2c313}.bc-back-brand{display:flex;container-type:inline-size;flex-direction:column;align-items: center;gap:14px;width:86%}.bc-back-brand .brand-symbol{aspect-ratio:1;color:var(--bc-ink);background:var(--bc-yellow);border:2px solid var(--bc-ink);border-radius:28%;width:50%;height:auto;box-shadow:2px 3px #192e48}.bc-back-brand .brand-symbol svg{width:65%;height:65%}.bc-back-name{white-space:nowrap;color:#fff6db;letter-spacing:-.035em;font:600 clamp(9px,17cqi,24px)/1 Fredoka,sans-serif}.bc-back-name>span{color:var(--bc-yellow)}.bc-front>.bc-dots{fill:#284765;width:82%;height:78%}.bc-dots circle{fill:#284765}.bc-corner{position:absolute;color:#617676;font:700 16px/1 Fredoka,sans-serif;top:8px;left:11px}.bc-corner.bottom{inset:auto 11px 8px auto;transform:rotate(180deg)}.bc-card-slot.focused .bc-weight{color:#9b761f}.bc-card-slot.focused .bc-card:after{content:"";position:absolute;pointer-events:none;opacity:.75;border:3px solid #f0c45c;border-radius:22px;inset:-6px}.bc-card:not(:disabled):hover .bc-face{box-shadow:0 7px #1c304c44,1px 12px 18px #1c304c1b}.bc-card:focus-visible{outline:4px solid #467fcd;outline-offset:7px}.bc-bits{display:grid;grid-template-columns:repeat(var(--card-count,5),minmax(0,1fr));gap:var(--card-gap);text-align:center;margin-top:21px}.bc-bits.hidden{visibility:hidden}.bc-bits>div>span{display:inline-block;color:#334a5a;border-radius:9px;min-width:36px;padding:3px;font:700 30px/1.2 Fredoka,monospace}.bc-bits .emphasis>span{color:#604e26;background:#ffdfa0}.bc-bits small{display:block;color:#89968a;margin-top:3px;font-size:10px}.bc-result{display:flex;text-align:center;justify-content:center;align-items: center;gap:60px;min-height:62px;margin:19px auto 22px}.bc-equation>span,.bc-code>span{display:block;color:#7b8a79;letter-spacing:.05em;font-size:10px;font-weight:700}.bc-equation>p{margin:7px 0 0;font:500 21px/1.4 Fredoka,sans-serif}.bc-equation>p>span{color:#8d9a87;padding:0 5px}.bc-equation>p>strong{font-size:31px}.bc-code{border-left:1px solid #d8dfd0;min-width:190px;padding-left:55px}.bc-code code{letter-spacing:.14em;color:#385c63;display:block;margin-top:5px;font:700 26px/1.5 monospace}.bc-code .bc-not-finished{color:#967526;max-width:230px;margin:8px 0 0;font-size:12px;line-height:1.6}.bc-actions{display:flex;border-top:1px solid #e1e5d8;justify-content:flex-end;align-items: center;gap:13px;min-height:67px;padding-top:18px}.bc-actions>.button{min-height:48px;font-size:14px}.bc-playback{display:flex;border-top:1px solid #e1e5d8;flex-wrap:wrap;justify-content:space-between;align-items: center;gap:14px;min-height:68px;padding-top:16px}.bc-step-count{color:#8a9785;letter-spacing:.06em;font-size:10px;font-weight:700}.bc-playback-actions{display:flex;align-items: center;gap:8px}.bc-playback-actions>button:not(.button){display:flex;color:#526f61;background:#f4f5e9;border:1px solid #b7c5ae;border-radius:10px;align-items: center;gap:7px;min-height:44px;padding:10px 13px;font-size:12px}.bc-playback>.bc-playback-actions>.button{min-height:44px;padding:10px 14px;font-size:12px}.bc-playback>p{color:#9e793d;width:100%;margin:0;font-size:12px;line-height:1.6}.bc-examples{display:flex;justify-content:center;gap:18px;margin-top:18px}.bc-examples button,.bc-menu>a{color:#728871;text-decoration:underline;cursor:pointer;background:0 0;border:0;min-height:32px;font-size:11px}.bc-complete{display:flex;color:#2c8a6d;align-items: center;gap:8px;margin-right:auto;font-size:13px}.bc-next-story{color:#7c8976;text-align:center;margin:23px 0 0;font-size:12px;line-height:1.8}.bc-menu:not(:popover-open){display:none}.bc-menu{position:fixed;color:#435a4f;background:#fffdf5;border:1px solid #bdcab3;border-radius:16px;width:min(320px,100vw - 32px);margin:0;padding:20px;inset:115px auto auto max(24px,50vw - 560px);box-shadow:0 10px 28px #23394526}.bc-menu>b{font-size:13px}.bc-menu>p{padding:6px 0;font-size:13px}.bc-menu>button{display:block;color:#405c4c;background:#edf2e5;border:1px solid #b1c5af;border-radius:9px;min-height:44px;margin-bottom:12px;padding:10px 14px}.bc-help-dialog{border:2px solid var(--bc-ink);background:var(--bc-paper);color:var(--bc-ink);border-radius:20px;width:min(440px,100vw - 28px);max-height:calc(100dvh - 45px);margin:auto;padding:22px}.bc-help-dialog::backdrop{background:#23374869}.bc-help-dialog header{display:flex;justify-content:space-between;align-items: center;gap:15px}.bc-help-dialog h2{margin:0;font-size:19px}.bc-help-dialog header>button{display:grid;color:#405a4b;background:#eef1e5;border:0;border-radius:50%;place-items: center;width:40px;height:40px}.bc-help-dialog p{font-size:14px;line-height:1.85}.bc-help-dialog label{display:flex;align-items: flex-start;gap:9px;margin:20px 0;font-size:13px;line-height:1.7}.bc-help-dialog input{flex-shrink:0;width:18px;height:18px}.bc-help-dialog .bc-help-small{color:#758571;font-size:11px}.bc-save-warning{color:#9c6837;font-size:12px}.binary-cards-app~.audio-notice{pointer-events:none;max-width:300px;top:76px;bottom:auto}.binary-cards-app~.audio-notice button{pointer-events:auto}@media (width>=1000px) and (height<=800px){.bc-header{height:62px}.bc-main{padding-top:16px}.bc-title h1{font-size:26px}.bc-table{padding:18px 30px}.bc-title{margin-bottom:15px}.bc-pending-lane{height:75px}.bc-card{aspect-ratio:.82}.bc-bits{margin-top:16px}.bc-result{margin:12px auto 17px}}@media (width<=700px){.binary-cards-app{--card-gap:10px}.bc-header{height:64px;padding:0 20px}.bc-header>div{gap:13px}.bc-main{padding:18px 16px 35px}.bc-title h1{font-size:27px}.bc-table{border-radius:22px;padding:18px}.bc-guide{gap:10px}.bc-guide>p{font-size:14px}.bc-guide>img{width:38px;height:48px}.bc-goal{margin-top:19px;font-size:12px}.bc-goal>strong{width:42px;height:42px;font-size:25px}.bc-face,.bc-card-rotor{border-radius:12px}.bc-card-slot.focused .bc-card:after{border-width:2px;border-radius:16px;inset:-4px}.bc-weight{margin-bottom:10px;font-size:20px}.bc-weight>small{font-size:9px}.bc-back-border{border-radius:7px;inset:6px}.bc-corner{font-size:12px;top:6px;left:7px}.bc-corner.bottom{bottom:6px;right:7px}.bc-bits>div>span{font-size:26px}.bc-result{gap:30px}.bc-code{min-width:140px;padding-left:28px}.bc-actions>.button{min-height:45px;padding:11px 15px;font-size:12px}.bc-start{flex-direction:column;gap:13px}.bc-pending-slot{height:72px}.bc-pending-dots{width:45px;height:55px}.bc-pending-label{font-size:8px;top:0}.bc-pending-slot>b{font-size:10px}.bc-playback{gap:8px}.bc-playback-actions{gap:6px}.bc-playback-actions>button:not(.button){padding:9px 10px;font-size:11px}}@media (width<=450px){.binary-cards-app{--card-gap:7px}.bc-header{height:60px;padding:0 14px}.bc-header .brand{font-size:22px}.bc-header .brand-symbol{width:30px;height:30px}.bc-header>div{gap:10px}.bc-main{padding:13px 10px 28px}.bc-title{margin-bottom:15px}.bc-title h1{margin-top:6px;font-size:24px;line-height:1.2}.bc-route{min-height:26px;font-size:9px}.bc-table{border-radius:20px;padding:14px 10px 17px}.bc-guide{gap:6px;min-height:62px;padding-bottom:12px}.bc-guide>img{width:29px;height:38px}.bc-guide>p{font-size:12px;line-height:1.7}.bc-voice{width:32px;min-width:32px;height:40px}.bc-help{width:36px}.bc-deck{margin-top:8px}.bc-pending-lane{height:89px}.bc-card{aspect-ratio:.63}.bc-face{border-width:1.5px;border-radius:10px;box-shadow:0 4px #24364d33}.bc-card-rotor{border-radius:10px}.bc-corner{font-size:10px;top:5px;left:5px}.bc-corner.bottom{bottom:5px;right:5px}.bc-front>.bc-dots{width:86%;height:78%}.bc-weight{gap:3px;font-size:18px}.bc-weight>small{font-size:8px}.bc-back-border{border-radius:6px;inset:5px}.bc-bits{gap:7px;margin-top:16px}.bc-bits>div>span{min-width:28px;font-size:23px}.bc-bits small{font-size:8px}.bc-result{gap:16px;margin:16px auto 19px}.bc-equation>span,.bc-code>span{font-size:9px}.bc-equation>p{font-size:16px}.bc-equation>p>strong{font-size:25px}.bc-code{min-width:116px;padding-left:15px}.bc-code code{letter-spacing:.08em;font-size:20px}.bc-code .bc-not-finished{max-width:128px;font-size:10px}.bc-pending-label{font-size:7px;top:2px}.bc-pending-slot{gap:2px;height:72px}.bc-pending-dots{border-radius:8px;width:42px;height:51px}.bc-pending-slot>b{display:none}.bc-actions{flex-wrap:wrap;gap:8px;padding-top:14px}.bc-actions>.button{padding:10px 12px;font-size:11px}.bc-playback-actions{flex-wrap:wrap;justify-content:flex-end}.bc-playback{align-items: flex-start}.bc-playback-actions>button:not(.button){gap:5px;padding:8px;font-size:10px}.bc-playback-actions>.button{min-height:42px!important;font-size:10px!important}.bc-step-count{padding-top:14px;font-size:8px}.bc-complete{font-size:11px}.bc-menu{top:103px;left:14px}.bc-examples{gap:17px;margin-top:13px}.bc-next-story{font-size:11px}.bc-start{margin:20px 0 0;font-size:11px}}@media (prefers-reduced-motion:reduce){.bc-card-rotor{will-change:auto}}.bc-deck:not(.bc-reserve-pending) .bc-pending-lane{height:22px}.bc-bits.hidden{display:none}.bc-goal{margin-bottom:0}@media (width>=1000px) and (height>=801px){.bc-card{aspect-ratio:.84}.bc-header{height:64px}.bc-main{padding-top:14px}.bc-title{margin-bottom:14px}.bc-title h1{font-size:28px}}.bc-end-goal{text-align:center;color:#526f61;margin:22px 0 0;font-size:14px}@media (width<=450px){.bc-back-brand{gap:8px;width:92%}.bc-back-brand .brand-symbol{border-width:1px;box-shadow:1px 1px #192e48}}.bc-moving-dots{position:absolute;overflow:visible;pointer-events:none;z-index:5;width:100%;height:100%;inset:0}.bc-moving-dots circle{fill:#284765}.bc-dots-in-flight>.bc-dots,.bc-pending-in-flight .bc-dots,.bc-pending-in-flight>b,.bc-pending-in-flight .bc-pending-label{visibility:hidden}.bc-carry-evidence{display:flex;flex-wrap:wrap;justify-content:center;align-items: center;gap:12px;margin:16px 0 0}.bc-carry-evidence>div{display:grid;justify-items:center;gap:4px}.bc-carry-evidence span{color:#526f61;font-size:12px}.bc-carry-evidence b{font-size:16px}.bc-lesson .bc-deck{max-width:min(820px,max(580px,100dvh - 180px));margin-left:auto;margin-right:auto}@media (width>=701px){.bc-lesson .bc-header{height:58px}.bc-lesson .bc-main{padding-top:10px}.bc-lesson .bc-title,.bc-lesson .lesson-progress{margin-bottom:8px}.bc-lesson .bc-guide{min-height:62px;padding-bottom:12px}.bc-lesson .bc-guide>img{width:42px;height:48px}.bc-lesson .bc-reserve-pending .bc-pending-lane{height:76px}.bc-lesson .bc-table{padding-top:18px;padding-bottom:18px}.bc-lesson .bc-result{margin-top:12px;margin-bottom:12px}.bc-lesson .bc-bits{margin-top:12px}.bc-lesson :-webkit-any(.bc-actions,.bc-playback){min-height:58px;padding-top:10px}.bc-lesson :-moz-any(.bc-actions,.bc-playback){min-height:58px;padding-top:10px}.bc-lesson :is(.bc-actions,.bc-playback){min-height:58px;padding-top:10px}}@media (width<=700px){.bc-lesson .bc-main{padding-bottom:115px}.bc-lesson .bc-guide>p{font-size:14px}.bc-lesson :-webkit-any(.bc-actions,.bc-playback){position:fixed;bottom:max(8px,env(safe-area-inset-bottom));z-index:8;background:var(--bc-paper);border:1px solid #c9d5c1;border-radius:14px;min-height:64px;padding:10px;left:10px;right:10px;box-shadow:0 4px 18px #24374a20}.bc-lesson :-moz-any(.bc-actions,.bc-playback){position:fixed;bottom:max(8px,env(safe-area-inset-bottom));z-index:8;background:var(--bc-paper);border:1px solid #c9d5c1;border-radius:14px;min-height:64px;padding:10px;left:10px;right:10px;box-shadow:0 4px 18px #24374a20}.bc-lesson :is(.bc-actions,.bc-playback){position:fixed;bottom:max(8px,env(safe-area-inset-bottom));z-index:8;background:var(--bc-paper);border:1px solid #c9d5c1;border-radius:14px;min-height:64px;padding:10px;left:10px;right:10px;box-shadow:0 4px 18px #24374a20}.bc-lesson .bc-actions>.button{font-size:14px}}.bc-source-dots{display:flex;gap:5px}.bc-source-dots .bc-dots{background:#fffbee;border:1px solid #b7c5ae;border-radius:6px;width:36px;height:44px}@media (width<=450px){.bc-carry-evidence{gap:8px}.bc-carry-evidence span{font-size:12px}}.bc-lesson .bc-guide>p{font-size:18px}.v2-app{--v2-line:#bdcbb5}.v2-main{max-width:1320px;margin:auto;padding:14px 26px 28px}.v2-title{display:flex;justify-content:space-between;align-items: center;min-height:36px;margin-bottom:10px}.v2-title .bc-route{color:#26394a;letter-spacing:0;font-size:18px}.v2-step-count{color:#819178;font:600 12px Fredoka,sans-serif}.v2-subtitle{color:#7e8d76;font-size:11px}.v2-table{padding:18px 28px 20px}.v2-guide{display:flex;border-bottom:1px solid #dfe4d5;align-items: center;gap:14px;min-height:76px;margin-bottom:17px}.v2-guide img{object-fit:contain;width:40px;height:49px}.v2-guide p{flex:1;margin:0;font-size:16px;font-weight:600;line-height:1.65}.v2-board{position:relative;display:grid;grid-template-columns:.85fr 1.15fr;gap:76px;padding:28px 7px 0}.v2-board h2,.v2-toolbox h2{color:#72856d;text-align:center;margin:0 0 10px;font-size:11px;font-weight:650}.v2-inputs{align-self: center}.v2-input-cards{display:flex;position:relative;justify-content:center;gap:34px}.v2-input{text-align:center;width:105px;min-width:0}.v2-input>b{display:block;color:#7c8d77;margin-bottom:7px;font-size:12px}.v2-input>strong{display:block;margin-top:10px;font:600 23px Fredoka,sans-serif}.v2-plus{position:absolute;color:#7f8e78;font-size:23px;top:58%;left:50%;transform:translate(-50%,-50%)}.v2-board .bc-card{aspect-ratio:.8}.v2-board .bc-weight{margin-bottom:10px;font-size:20px}.v2-output-columns{display:flex;justify-content:center;gap:36px}.v2-output{width:124px;min-width:0}.v2-slot{position:relative;z-index:2;height:101px;margin:0 -5px 28px}.v2-slot-target{border:2px dashed var(--v2-line);display:flex;color:#627a60;cursor:pointer;background:#f9faef;border-radius:15px;flex-direction:column;justify-content:center;align-items: center;gap:2px;width:100%;height:77px;padding:7px;font-size:11px}.v2-slot-target:disabled{opacity:1;cursor:default}.v2-slot.occupied .v2-slot-target{background:#eaf1df;border-style:solid;box-shadow:0 3px #c8d8bb}.v2-slot.processing .v2-slot-target{background:#ffedac;border-color:#d5a236}.v2-slot.candidate .v2-slot-target{background:#fff4cd;border-color:#d9a73c}.v2-slot.locked{opacity:.22}.v2-empty-plus{font-size:28px;line-height:1}.v2-remove{color:#74876e;display:flex;cursor:pointer;background:0 0;border:0;justify-content:center;align-items: center;gap:3px;width:100%;height:25px;padding:0 4px;font-size:10px}.v2-owner{display:flex;color:#8e772e;white-space:nowrap;justify-content:center;align-items: center;gap:5px;min-height:28px;margin-top:10px;font-size:12px}.v2-owner.auto{color:#3d7d65}.v2-rule-face{display:flex;flex-direction:column;flex-shrink:0;justify-content:center;align-items: center;gap:3px;height:47px}.v2-rule-row{display:flex;align-items: center;gap:4px}.v2-rule-row>span:not(.v2-mini-card){color:#93a180;font-size:13px}.v2-mini-card{display:inline-grid;vertical-align:middle;border:1px solid #617367;border-radius:4px;place-items: center;width:17px;height:21px;font-size:10px}.v2-mini-card.up{color:#28445a;background:#ffe28b}.v2-mini-card.down{color:#eee8c1;background:#355575;border-color:#2a415a}.v2-mini-card.result-mini{background:#fffbee;font-size:14px}.v2-answer{display:flex;text-align:center;justify-content:center;align-items: center;gap:20px;min-height:59px;margin:10px 0 9px;font:600 27px Fredoka,sans-serif}.v2-answer small{color:#9b7838;font:500 11px sans-serif}.v2-mismatch{display:flex;gap:20px;font:500 12px sans-serif}.v2-mismatch b{padding-left:5px;font:600 26px Fredoka,sans-serif}.v2-bottom{display:flex;border-top:1px solid #dfe4d5;justify-content:space-between;gap:20px;min-height:126px;padding-top:12px}.v2-toolbox{min-width:250px}.v2-toolbox h2{text-align:left;margin-bottom:7px;font-size:10px}.v2-toolbox>div{display:flex;gap:10px}.v2-part{color:#354d43;cursor:pointer;display:grid;grid-template-columns:1fr;background:#eff3e6;border:1px solid #b8c8ac;border-radius:12px;justify-items:center;width:121px;min-height:84px;padding:6px}.v2-part>span:not(.v2-rule-face){font-size:11px;font-weight:700}.v2-part>small{font-size:9px;line-height:1.3}.v2-part.selected{background:#fff1bf;border:2px solid #d8aa42;padding:5px}.v2-part:disabled{opacity:.65;cursor:default}.v2-actions{display:flex;flex-direction:column;justify-content:center;align-items: flex-end;gap:10px;min-width:150px}.v2-actions .button{min-height:44px;padding:10px 19px;font-size:13px}.v2-record-button,.v2-link{display:flex;color:#6a8065;cursor:pointer;background:0 0;border:0;align-items: center;gap:5px;min-height:32px;padding:4px;font-size:12px}.v2-record-button:disabled{opacity:.35;cursor:default}.v2-playback{display:flex;gap:7px}.v2-playback button{display:grid;color:#506c5d;background:#f2f5e8;border:1px solid #c0cdb5;border-radius:9px;place-items: center;width:37px;height:34px}.v2-effects{position:absolute;pointer-events:none;overflow:visible;z-index:3;width:100%;height:100%;inset:0}.v2-wire{stroke:#a0baa0;stroke-width:2;fill:none}.v2-wire.empty{stroke:#c4cebb;stroke-dasharray:4 4}.v2-state-packet{fill:#fff8df;stroke:#c8a953;stroke-width:1}.v2-effects text{fill:#314b4b;font:600 10px monospace}.v2-pulse{fill:#edbb44;stroke:#b68e28}.v2-count-dot{fill:#294763;stroke:#fff5cf;stroke-width:1}.v2-count-checking .bc-dots{visibility:hidden}.v2-records{color:#294253;overflow:auto;background:#fffdf5;border:2px solid #294253;border-radius:20px;width:min(580px,100vw - 24px);max-height:calc(100dvh - 32px);margin:auto;padding:22px}.v2-records::backdrop{background:#24374780}.v2-records header{display:flex;justify-content:space-between;align-items: center;gap:12px}.v2-records h2{margin:0;font-size:20px}.v2-records header button{color:inherit;background:0 0;border:0;min-width:40px;min-height:40px}.v2-records h3{margin:16px 0 8px;font-size:14px}.v2-compare-controls{display:flex;align-items: center;gap:8px;font-size:12px}.v2-compare-controls button{color:inherit;background:#f1f4e7;border:1px solid #b8c9aa;border-radius:8px;min-width:36px;min-height:36px}.v2-compare-controls button[aria-pressed=true],.v2-compare-parts button[aria-pressed=true]{background:#ffedb0;border-color:#ba902f}.v2-compare-parts{display:flex;gap:8px;margin-top:10px}.v2-compare-parts button{display:flex;color:inherit;background:#f1f4e7;border:1px solid #b8c9aa;border-radius:10px;flex:1;justify-content:center;align-items: center;gap:9px;font-size:12px}.v2-records table{border-collapse:collapse;text-align:center;width:100%;margin-top:16px}.v2-records th{color:#75866f;padding:10px 5px;font-size:11px}.v2-records td{border-top:1px solid #dfe5d6;padding:11px 4px;font-size:16px}.v2-records td small{display:block;color:#7a8a72;margin-top:5px;font-size:10px}.v2-record-state{display:inline-flex;align-items: center;gap:6px}.concealed{visibility:hidden;pointer-events:none}.v2-board.manual-board .v2-wire{visibility:hidden}@media (width<=700px){.v2-main{padding:8px 10px 20px}.v2-table{padding:12px 14px 15px}.v2-title{min-height:30px;margin-bottom:5px}.v2-title>button{font-size:16px}.v2-subtitle{display:none}.v2-guide{gap:10px;min-height:76px;margin-bottom:0}.v2-guide p{font-size:13px;line-height:1.65}.v2-guide img{width:31px;height:41px}.v2-board{grid-template-columns:1fr;gap:42px;padding:9px 0 0}.v2-board h2{margin-bottom:6px;font-size:10px}.v2-input-cards{gap:35px}.v2-input{width:57px}.v2-input>b{margin-bottom:3px;font-size:10px}.v2-input>strong{margin-top:4px;font-size:17px}.v2-input .bc-weight{display:none}.v2-input .bc-card{aspect-ratio:.94}.v2-input .bc-corner{font-size:8px;top:3px;left:4px}.v2-input .bc-corner.bottom{bottom:3px;right:4px}.v2-plus{font-size:19px}.v2-output-columns{gap:46px}.v2-output{width:90px}.v2-slot{height:81px;margin-bottom:20px}.v2-slot-target{height:61px;padding:4px}.v2-slot-target .v2-rule-face{gap:2px;height:37px}.v2-slot-target .v2-mini-card{width:14px;height:17px;font-size:8px}.v2-remove{height:22px;font-size:9px}.v2-empty-plus{font-size:22px}.v2-output .bc-card{aspect-ratio:1.05}.v2-output .bc-weight{margin-bottom:6px;font-size:18px}.v2-owner{gap:3px;min-height:23px;margin-top:6px;font-size:10px}.v2-answer{min-height:37px;margin:5px 0;font-size:23px}.v2-mismatch{gap:13px;font-size:10px}.v2-mismatch b{font-size:23px}.v2-bottom{gap:10px;min-height:110px;padding-top:9px}.v2-toolbox{flex:1;min-width:0}.v2-toolbox>div{gap:6px}.v2-part{width:91px;min-height:81px;padding:4px}.v2-part.selected{padding:3px}.v2-part>small{font-size:8px}.v2-rule-face{height:42px}.v2-rule-row{gap:3px}.v2-mini-card{width:14px;height:18px}.v2-actions{gap:5px;min-width:103px}.v2-actions .button{min-height:41px;padding:9px 12px;font-size:11px}.v2-record-button,.v2-link{min-height:30px;font-size:10px}.v2-playback button{width:31px;height:31px}}@media (width>=701px) and (height<=800px){.v2-input{width:86px}.v2-output{width:103px}.v2-board{padding-top:25px}.v2-board .bc-card{aspect-ratio:.95}.v2-guide{min-height:62px;margin-bottom:7px}.v2-slot{height:87px;margin-bottom:23px}.v2-slot-target{height:65px}.v2-guide p{font-size:14px}.v2-answer{min-height:41px;margin:5px 0}.v2-owner{font-size:11px}.v2-bottom{min-height:113px;padding-top:9px}}@media (width<=700px) and (height<=780px){.v2-guide{min-height:64px}.v2-board{gap:28px}.v2-output .bc-card{aspect-ratio:1.2}.v2-answer{min-height:32px}.v2-main{padding-bottom:12px}.v2-bottom{padding-top:6px}}.v2-slot.occupied .v2-slot-target{overflow:hidden;display:grid;grid-template-rows:minmax(0,1fr)12px;justify-items:center;gap:4px;padding:7px}.v2-slot-target .v2-rule-face{gap:3px;height:auto;min-height:0}.v2-slot-target .v2-rule-row{line-height:1}.v2-slot-target .v2-mini-card{width:16px;height:18px;font-size:9px}.v2-slot-target>span:last-child:not(.v2-rule-face){line-height:12px}.v2-slot.drop-hover .v2-slot-target{background:#ffe8a4;border-style:solid;border-color:#be9028;box-shadow:0 0 0 4px #f4d27870}.v2-part{touch-action:none;user-select:none;-webkit-user-select:none;cursor:grab}.v2-part:active{cursor:grabbing}.v2-part>*{pointer-events:none}.v2-drag-preview{position:fixed;z-index:1000;pointer-events:none;display:flex;background:#fff1c5;border:2px solid #caa046;border-radius:14px;flex-direction:column;align-items: center;gap:6px;width:112px;padding:9px;transform:translate(-50%,-110%);box-shadow:0 8px 22px #26374735}.v2-drag-preview b{font-size:12px}@media (width<=700px),(height<=800px){.v2-slot.occupied .v2-slot-target{gap:3px;padding:5px 7px}.v2-slot-target .v2-mini-card{border-radius:3px;width:14px;height:15px;font-size:8px}.v2-slot-target .v2-rule-face{gap:3px}}@media (width<=700px){.v2-slot-target .v2-mini-card{height:14px}}.v2-definition{flex:1;min-width:0;max-width:440px}.v2-definition h2{color:#435e50;margin:0 0 4px;font-size:13px}.v2-definition p{color:#6f8068;margin:0 0 5px;font-size:11px;line-height:1.4}.v2-definition-legend{display:flex;color:#7b8b74;justify-content:center;gap:14px;margin-bottom:5px;font-size:9px}.v2-conditions{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.v2-conditions button{color:#3c554b;cursor:pointer;background:#f4f6e9;border:2px solid #bfccb4;border-radius:11px;padding:8px 4px;transition:background-color .12s,border-color .12s,box-shadow .12s}.v2-conditions button.chosen{background:#fff0b8;border-color:#c6a046}.v2-conditions button.mismatch{border-color:#ca9c37;box-shadow:inset 0 0 0 1px #ca9c37}.v2-conditions button:disabled{opacity:.65;cursor:default}.v2-conditions b{font:600 17px Fredoka,sans-serif}.v2-condition-result{display:flex;justify-content:center;align-items: center;gap:5px;margin-top:5px}.v2-condition-result>span:not(.v2-mini-card){color:#8d9b80;font-size:11px}.v2-definition>small{display:block;color:#87917b;margin-top:5px;font-size:9px;line-height:1.4}.v2-slot.defining-rule .v2-slot-target{background:#fff6d7;border-color:#d4ac51}.v2-slot.defining-rule .v2-rule-face{gap:2px;height:auto}.v2-slot.defining-rule.many-cases .v2-mini-card{border-radius:2px;width:11px;height:9px;font-size:6px}.v2-slot.defining-rule.many-cases .v2-rule-row>span:not(.v2-mini-card){font-size:9px}@media (width<=700px){.v2-defining{gap:8px}.v2-defining .v2-actions{min-width:94px}.v2-defining .v2-actions .button{max-width:106px;padding:9px}.v2-definition h2{font-size:11px}.v2-definition p{font-size:9px}.v2-definition-legend{gap:8px;font-size:8px}.v2-conditions{gap:5px}.v2-conditions button{padding:6px 2px}.v2-conditions b{font-size:14px}.v2-condition-result{gap:3px}.v2-condition-result .v2-mini-card{width:12px;height:16px}.v2-definition>small{font-size:8px}}.v2-slot.defining-rule .v2-slot-target{display:grid;grid-template-rows:minmax(0,1fr)12px;overflow:hidden;justify-items:center;gap:3px;padding:5px 7px}.v2-conditions b{display:flex;justify-content:center;align-items: center;gap:4px}.v2-condition-check{font-size:11px}.v2-hint-button{color:#526f5b;cursor:pointer;background:#f2f5e8;border:1px solid #bdcbb2;border-radius:9px;min-height:32px;padding:6px 10px;font-size:11px}.v2-hint-button:disabled{opacity:.45;cursor:default}.v2-example-comparison{background:#fff4d4;border-radius:12px;padding:9px 14px}@media (hover:hover) and (pointer:fine){.v2-conditions button:not(:disabled):hover{background:#eaf0df;border-color:#93a986}.v2-conditions button.chosen:not(:disabled):hover{background:#ffe6a0;border-color:#b79039}.v2-conditions button.mismatch:not(:disabled):hover{border-color:#ca9c37}}.v2-conditions button:focus-visible{outline:3px solid var(--blue);outline-offset:3px}@media (prefers-reduced-motion:reduce){.v2-conditions button{transition:none}}.v2-output-columns{position:relative;width:max-content;max-width:100%;margin-inline-start:auto;margin-inline-end:auto}.v2-output.reveal-focus .v2-slot-target{background:#fff0b5;border-color:#cda33e;box-shadow:0 0 0 4px #f9d77c55}.v2-machine-frame,.v2-machine-cover{position:absolute;border:2px solid #769a8a;border-radius:22px;height:109px;inset:-12px -16px auto}.v2-machine-frame{pointer-events:none;z-index:1;animation:.8s ease-out both v2-enclose;background:#eaf1df55}.v2-machine-cover{z-index:4;display:flex;color:#26394a;cursor:pointer;animation:.9s ease-out both v2-enclose;background:#f9dfa0;border-color:#344d53;flex-direction:column;justify-content:center;align-items: center;gap:5px;width:calc(100% + 32px);box-shadow:0 5px #bdcbb5}.v2-machine-cover strong{font-size:20px}.v2-machine-cover small{font-size:11px}.v2-machine-cover:disabled{opacity:1;cursor:default}.machine-closed .v2-slot{visibility:hidden}@keyframes v2-enclose{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}@media (width<=700px){.v2-machine-frame,.v2-machine-cover{height:91px;left:-10px;right:-10px}.v2-machine-cover{gap:2px;width:calc(100% + 20px)}.v2-machine-cover strong{font-size:17px}.v2-slot-target>span:not(.v2-empty-plus){font-size:10px}}@media (prefers-reduced-motion:reduce){.v2-machine-frame,.v2-machine-cover{animation:none}}.v2-board h2{color:#435e50;font-size:22px}.v2-region-label{text-align:center;color:#435e50;margin:-4px 0 16px;font-size:15px;font-weight:600}.manual-board .v2-inputs,.manual-board .v2-outputs{border:2px solid #91aa99;border-radius:20px;align-self:stretch;padding:18px 12px}.manual-board .v2-outputs{background:#fff6da55;border-color:#c8a04a}.manual-board .v2-inputs{background:#edf3e455}.manual-board .v2-slot{display:none}.manual-board .v2-input-cards{padding-top:21px}.v2-conditions .v2-rule-face{height:40px}.v2-definition{max-width:520px}.v2-definition h2{font-size:16px}.v2-definition p{font-size:13px}@media (width>=701px){.v2-table:has(.v2-defining) .v2-guide{min-height:62px;margin-bottom:8px}.v2-table:has(.v2-defining) .v2-board{padding-top:12px}.v2-table:has(.v2-defining) .v2-slot{height:85px;margin-bottom:12px}.v2-table:has(.v2-defining) .v2-output .bc-card{aspect-ratio:.9}}.v2-machine-cover{cursor:default}.v2-addition-summary{text-align:center;margin:0 0 16px}.v2-addition-summary h2{color:#435e50;margin:0 0 8px;font-size:16px}.v2-addition-summary>div{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 20px}.v2-addition-summary span{border:2px solid #0000;border-radius:8px;padding:6px 12px;font:500 23px Fredoka,sans-serif}.v2-addition-summary span.active{background:#fff0b8;border-color:#c6a046}@media (width<=700px){.v2-board h2{font-size:18px}.v2-region-label{margin-bottom:8px;font-size:13px}.manual-board .v2-inputs,.manual-board .v2-outputs{padding:10px}.manual-board .v2-input-cards{padding-top:0}.v2-board.manual-board{gap:14px}.v2-defining{flex-wrap:wrap}.v2-definition{flex-basis:100%}.v2-defining .v2-actions{flex-flow:wrap;justify-content:flex-end;width:100%}.v2-definition h2{font-size:15px}.v2-definition p{font-size:12px}.v2-addition-summary span{padding:4px 8px;font-size:19px}.v2-addition-summary>div{gap:4px}.v2-conditions button{min-height:72px}}.v2-output-bit{display:block;text-align:center;margin-top:8px;font:600 26px Fredoka,sans-serif}.v2-table:has(.v2-machine-cover) .v2-toolbox{display:none}.v2-table:has(.v2-machine-cover) .v2-bottom{justify-content:flex-end;min-height:0}@media (width<=700px){.v2-table:has(.v2-defining) .v2-guide{min-height:64px}.v2-table:has(.v2-defining) .v2-board{gap:12px}.v2-table:has(.v2-defining) .v2-slot{height:61px;margin-bottom:8px}.v2-table:has(.v2-defining) .v2-output .bc-card{aspect-ratio:1.2}}.v2-table:has(.v2-machine-cover) .v2-owner{display:none}.v2-table:has(.v2-machine-cover) .v2-actions{flex-flow:wrap;align-items: center}.v2-extra-one{display:flex;color:#435e50;justify-content:center;align-items: center;gap:14px;margin-top:22px}.v2-extra-plus{font-size:28px}.v2-extra-card{text-align:center;flex:0 0 70px}.v2-extra-card .bc-card{aspect-ratio:1;outline:3px solid #c6a046;outline-offset:4px}.v2-extra-card .bc-weight{display:none}.v2-extra-card>strong{display:block;margin-top:8px;font:600 23px Fredoka,sans-serif}.v2-extra-one b,.v2-extra-one small{display:block}.v2-extra-one b{font-size:16px}.v2-extra-one small{margin-top:6px;font-size:13px}.v2-extra-question{text-align:center;margin:4px 0 14px}.v2-extra-question h2{color:#435e50;margin:0 0 6px;font-size:16px}.v2-extra-question>strong{font:600 30px Fredoka,sans-serif}.v2-extra-question em{background:#fff0b8;border-radius:6px;padding:2px 8px;font-style:normal}@media (width<=700px){.v2-board.v2-third-input{gap:28px}.v2-extra-one{gap:12px;margin-top:14px}.v2-extra-card{flex-basis:50px}.v2-extra-one b{font-size:14px}.v2-extra-one small{font-size:12px}.v2-extra-card>strong{font-size:18px}.v2-third-input .v2-outputs>h2{margin-bottom:18px}.v2-third-input .v2-slot{margin-bottom:12px}.v2-third-input .v2-outputs>h2{position:relative;z-index:4;background:var(--bc-paper);width:-moz-fit-content;width:fit-content;margin-inline-start:auto;margin-inline-end:auto;padding-inline-start:6px;padding-inline-end:6px}}.v2-read-cue{display:grid;color:#435e50;cursor:pointer;background:#f2f5e8;border:1px solid #bdcbb5;border-radius:50%;flex:0 0 40px;place-items: center;width:40px;height:40px;padding:0}.v2-read-cue:disabled{opacity:.4;cursor:default}.v2-audio-problem{max-width:280px;font-size:12px}.v2-audio-problem p{margin:0 0 6px}.v2-audio-problem button+button{margin-left:6px}.v2-mini-card.bc-front,.v2-mini-card.bc-back{position:relative;overflow:hidden;border:1px solid var(--bc-ink);transform:none;box-shadow:0 1px #1c304c44}.v2-mini-card.bc-front{background:linear-gradient(115deg,#fffefb,#fffbee)}.v2-mini-card svg{fill:var(--bc-ink);width:100%;height:100%}.v2-mini-card.bc-back{background-color:#365578}.v2-mini-card .brand-symbol{opacity:.8;width:65%;height:65%}.v2-mini-border{position:absolute;border:1px solid #adc8d074;border-radius:2px;inset:2px}.v2-rule-legend{display:flex;flex-wrap:wrap;justify-content:center;align-items: center;gap:6px;margin:6px 0;font-size:12px}.v2-hint-button{color:#28445a;background:#fff3bd;border:2px solid #879c67;min-height:42px;padding:8px 14px;font-size:14px;font-weight:700}.v2-slot-target:not(:disabled){cursor:pointer}.v2-slot-target:not(:disabled):focus-visible{outline:3px solid #d59821;outline-offset:3px}.v2-zero-rule{display:flex;background:#edf0e8;border:1px solid #b3bdac;border-radius:12px;flex-wrap:wrap;justify-content:center;align-items: center;gap:10px;margin-top:8px;padding:10px;font-size:16px}.v2-remove{color:#294d3c;background:#f0f3e8;border:1px solid #b6c3a7;border-radius:8px;min-height:36px;padding:6px 8px;font-size:14px}.v2-toolbox .v2-part small,.v2-slot-target small,.v2-rule-legend,.v2-definition>p{font-size:16px;line-height:1.4}.v2-definition .v2-mini-card{width:24px;height:32px}.v2-hint-button{background:#eef3e8}.v2-remove{min-height:44px;font-size:16px}.v2-machine-cover small{font-size:16px;line-height:1.4}.v2-guide p{font-size:18px}.v2-zero-rule span,.v2-rule-legend{font-size:16px;line-height:1.4}.v2-third-input .v2-outputs>h2{white-space:nowrap}.fa-app{--fa-green:#55705d;--fa-muted:#5d725d;--fa-line:#b6c6a9;--fa-cell:clamp(78px,9vh,94px);--fa-tag:22px;--fa-weight:24px;--fa-plus:26px;--fa-aspect:.84}.fa-main{max-width:1320px;margin:auto;padding:18px 26px 28px}.fa-title{display:flex;justify-content:space-between;align-items: center;gap:20px;margin-bottom:12px}.fa-title .bc-route{letter-spacing:0;color:var(--bc-ink);text-align:left;gap:9px;min-height:38px;font-size:21px}.fa-title .bc-route svg{color:var(--fa-muted);flex-shrink:0}.fa-subtitles{color:var(--fa-muted);font-size:12px}.fa-table{overflow:visible;padding:16px 24px 12px}.fa-guide{display:flex;border-bottom:1px solid #dbe2d2;align-items: center;gap:16px;min-height:76px;padding-bottom:14px}.fa-guide img{object-fit:contain;flex:0 0 44px;width:44px;height:54px}.fa-guide p{max-width:76ch;margin:0;font-size:18px;font-weight:600;line-height:1.65}.fa-guide.is-error p{color:#97583e}.fa-board{overflow-x:auto;overscroll-behavior-x:contain;scrollbar-width:thin;scrollbar-color:#9dae92 #edf1e5;scroll-padding:18px;min-width:0;padding:20px 12px 14px}.fa-board:focus-visible{outline:3px solid #3e718d;outline-offset:2px;border-radius:12px}.fa-board::-webkit-scrollbar{height:9px}.fa-board::-webkit-scrollbar-track{background:#edf1e5;border-radius:6px}.fa-board::-webkit-scrollbar-thumb{background:#9dae92;border:2px solid #edf1e5;border-radius:6px}.fa-pan-hint{display:flex;color:var(--fa-muted);justify-content:center;align-items: center;gap:7px;margin:3px 0 8px;font-size:12px}.fa-tree.fa-landscape{display:flex;align-items: flex-start;gap:18px;width:max-content;margin-inline-start:auto;margin-inline-end:auto;padding:6px}.fa-stage{display:flex;align-items:stretch;gap:12px}.fa-mid{display:flex;flex-direction:column;align-items: flex-start}.fa-pair{display:flex;flex-direction:column;align-items: center}.fa-join{display:flex;align-items: center;gap:9px}.fa-cell{width:var(--fa-cell);flex:0 0 var(--fa-cell);display:flex;position:relative;text-align:center;flex-direction:column;align-items:stretch}.fa-cell .bc-card-slot{width:100%}.fa-tag{height:var(--fa-tag);min-height:var(--fa-tag);display:flex;color:#4f6757;white-space:nowrap;justify-content:center;align-items: center;margin:0 0 3px;font-size:13px;font-weight:650;line-height:1.25}.fa-cell .bc-weight{color:#435e50;height:var(--fa-weight);min-height:var(--fa-weight);font-size:18px;line-height:var(--fa-weight);display:flex;justify-content:center;align-items: center;gap:4px;margin:0 0 5px}.fa-cell .bc-weight small{font-size:.68em}.fa-app .bc-card,.fa-ghost-card{aspect-ratio:var(--fa-aspect)}.fa-app .bc-card-slot{container-type:inline-size}.fa-app .bc-card{border-radius:17em;font-size:1.11111cqi}.fa-app .bc-card-rotor,.fa-app .bc-face{border-radius:17em}.fa-app .bc-face{border-width:2em;box-shadow:0 5em #1c304c44,1em 8em 14em #1c304c0c}.fa-app .bc-back{background-image:repeating-linear-gradient(45deg,#ffffff05 0 2em,#0000 2em 10em)}.fa-app .bc-back-border{border-width:1em;border-radius:10em;inset:9em;box-shadow:inset 0 0 0 3em #a9c2c313}.fa-app .bc-back-brand{gap:14em;width:86%}.fa-app .bc-back-brand .brand-symbol{border-width:2em;box-shadow:2em 3em #192e48}.fa-app .bc-back-name{font-size:17cqi}.fa-app .bc-front>.bc-dots{width:82%}.fa-app .bc-corner{font-size:12em;top:.666667em;left:.916667em}.fa-app .bc-corner.bottom{inset:auto .916667em .666667em auto}.fa-landscape .fa-input>strong{display:none}.fa-plus{height:var(--fa-plus);min-height:var(--fa-plus);display:grid;color:#788e73;place-items: center;font:600 22px/1 Fredoka,sans-serif}.fa-plus.fa-silent{visibility:hidden}.fa-still{color:#82652f;margin:6px 0 0;font-size:12px}.fa-brace{margin:var(--fa-tag)0 6px;position:relative;border:2px solid #78907a;border-left:0;border-radius:0 13px 13px 0;flex:0 0 17px;align-self:stretch;width:17px}.fa-brace i{position:absolute;background:#78907a;width:10px;height:2px;top:50%;right:-10px}.fa-brace-or{border-color:#5f7d68;margin-block-start:0;margin-block-end:0}.fa-ha{box-sizing:border-box;display:flex;text-align:center;color:#344f42;background:#edf2e4;border:2px solid #a7b99c;border-radius:14px;flex-direction:column;flex-shrink:0;justify-content:center;align-items: center;gap:6px;width:78px;padding:13px 7px;font-size:14px;font-weight:700}.fa-ha>span,.fa-ha>small{display:block;line-height:1.35}.fa-ha>small{font-size:12px;font-weight:600}.fa-ha svg{color:#6a866d}.fa-ha-choice{position:relative;cursor:pointer}.fa-ha-choice:hover:not(:disabled),.fa-ha-choice.is-selected{background:#fff0bb;border-color:#9a7425}.fa-ha-choice.is-selected{box-shadow:0 0 0 3px #e7c964}.fa-ha-choice:focus-visible{outline:3px solid #3e718d;outline-offset:4px}.fa-ha-choice:disabled{cursor:default}.fa-ha .fa-ha-check{position:absolute;color:#fff;background:#52775f;border-radius:50%;padding:2px;top:4px;right:4px}.fa-or-spacer{visibility:hidden;pointer-events:none}.fa-ghost-card{display:grid;color:#758970;background:#f6f7eb;border:2px dashed #aebda2;border-radius:17px;place-items: center;width:100%;font:500 32px Fredoka,sans-serif}.fa-slot.is-source,.fa-slot.is-missing{position:relative;isolation:isolate}.fa-slot.is-source:before,.fa-slot.is-missing:before{content:"";position:absolute;z-index:-1;background:#fff0be;border-radius:14px;inset:-4px -6px -6px}.fa-slot.is-source:before{background:#e5eedc}.fa-slot.is-missing:before{outline:2px dashed #ad5638;background:#fbe2d4}.fa-slot.is-missing>.fa-tag{color:#943f28;font-weight:750}.fa-stage.pulse,.fa-pair.pulse,.fa-slot.pulse{outline:2px solid #d3ab48;outline-offset:6px;border-radius:17px}.fa-input.guided .bc-card{outline:3px solid #d3ab48;outline-offset:5px}.fa-app .bc-card:not(:disabled){transition:transform .13s}@media (hover:hover){.fa-app .bc-card:not(:disabled):hover{transform:translateY(-3px)}.fa-link:not(:disabled):hover,.fa-playback button:hover{background:#edf2e4}}.fa-app .bc-card:not(:disabled):active{transform:translateY(1px)}.fa-tree-manual{display:grid;grid-template-columns:1.35fr 1fr;--manual-card:108px;align-items:stretch;gap:32px;width:min(970px,100%);margin:4px auto 8px}.fa-inputs,.fa-results{background:#f2f6e855;border:1.5px solid #aec0a3;border-radius:18px;min-width:0;padding:18px}.fa-results{background:#fff6dc55;border-color:#c8ab56}.fa-tree h2{color:#435e50;text-align:center;margin:0 0 16px;font-size:22px;line-height:1.4}.fa-input-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));justify-items:center;gap:22px}.fa-results>div{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));justify-items:center;gap:22px}.fa-tree-manual .fa-input,.fa-tree-manual .fa-result{max-width:var(--manual-card);width:100%}.fa-input-cards>.fa-input{position:relative}.fa-input-cards>.fa-input:not(:last-child):after{content:"+";position:absolute;color:#7a8d75;font:500 23px Fredoka,sans-serif;top:58%;right:-18px}.fa-input>strong,.fa-result>strong{display:block;text-align:center;margin-top:10px;font:600 28px Fredoka,sans-serif}.fa-result{text-align:center}.fa-result .bc-weight{color:#435e50;height:var(--fa-weight);display:flex;justify-content:center;align-items: center;gap:4px;margin:0 0 5px;font-size:18px}.fa-result>small{display:flex;color:var(--fa-muted);justify-content:center;align-items: center;gap:5px;min-height:28px;margin-top:7px;font-size:12px}.fa-tree-boxed{display:grid;grid-template-columns:minmax(0,1.15fr)minmax(260px,320px)minmax(0,.85fr);--boxed-card:90px;align-items: center;gap:28px;width:min(1060px,100%);margin:12px auto}.fa-boxed-inputs,.fa-boxed-results{align-self: start;min-width:0}.fa-tree-inputs,.fa-tree-results{display:flex;justify-content:center;gap:12px}.fa-tree-boxed .fa-cell,.fa-tree-boxed .fa-result{width:var(--boxed-card);flex:0 1 var(--boxed-card);min-width:0}.fa-whole-cover{display:grid;grid-template-columns:42px minmax(0,1fr)58px;text-align:center;background:#f9e3aa;border:2px solid #5e7964;border-radius:20px;align-items: center;gap:10px;min-height:210px;padding:18px 12px}.fa-whole-cover>div{display:flex;flex-direction:column;align-items: center;gap:12px;min-width:0}.fa-whole-cover h2{color:var(--bc-ink);margin:0;font-size:27px}.fa-whole-cover p{margin:0;font-size:12px;line-height:1.4}.fa-whole-cover span{display:flex;background:#fff8e0;border:1px solid #bdaa70;border-radius:8px;align-items: center;gap:5px;min-width:36px;padding:7px;font:500 14px Fredoka,sans-serif}.fa-whole-cover .fa-box-port{flex-direction:column;gap:3px;min-width:52px}.fa-box-port small{font-size:10px}.fa-box-port b{font:600 23px Fredoka,sans-serif}.fa-equation{text-align:center;min-height:42px;margin:8px 0 14px;font:600 29px/1.4 Fredoka,sans-serif}.fa-equation b{font-weight:600}.fa-mismatch{display:grid;grid-template-columns:auto auto auto auto;background:#fbe9de;border-radius:12px;justify-content:center;align-items: center;gap:6px 24px;width:-moz-fit-content;width:fit-content;max-width:100%;margin:0 auto;padding:8px 20px}.fa-mismatch-title{color:#943f28;max-width:120px;font-size:15px}.fa-mismatch>span{display:flex;color:#6e603e;flex-direction:column;align-items: center;gap:3px;font-size:14px}.fa-mismatch small{font-size:inherit}.fa-mismatch>i{color:#943f28;font-style:normal}.fa-mismatch b{color:var(--bc-ink);font:600 30px Fredoka,sans-serif}.fa-mismatch-actual b{color:#943f28}.fa-answer-row{display:flex;background:#fff0be;border-radius:14px;justify-content:center;align-items: center;gap:28px;width:-moz-fit-content;width:fit-content;max-width:100%;margin:12px auto;padding:10px 18px}.fa-answer-row>.fa-equation{margin:0}.fa-final-result{display:flex;color:#705624;--fa-cell:52px;--fa-weight:18px;border-radius:14px;flex-shrink:0;align-items: center;gap:18px}.fa-final-result h2{display:flex;justify-content:center;align-items: center;gap:8px;max-width:100px;margin:0;font-size:17px}.fa-final-cards{display:flex;text-align:center;justify-content:center;gap:20px}.fa-final-cards .fa-tag{display:none}.fa-final-cards strong{display:block;color:var(--bc-ink);margin-top:5px;font:600 24px Fredoka,sans-serif}.fa-final-result.pulse{outline:2px solid #b68c2c;outline-offset:3px}@media (width>=761px) and (height<=900px){.fa-board:not(.fa-boxed){--fa-cell:62px;--fa-tag:18px;--fa-weight:18px;--fa-plus:20px}.fa-table.has-final .fa-tree.fa-landscape{padding-top:0}}@media (width<=760px){.fa-answer-row{flex-wrap:wrap;gap:12px}.fa-answer-row .fa-equation{margin:0}}.fa-bottom{display:flex;background:var(--bc-paper);position:sticky;z-index:4;border-top:1px solid #dbe2d2;justify-content:space-between;align-items: center;gap:18px;min-height:70px;padding:12px 0 8px;bottom:0}.fa-context{color:#536c58;min-width:0;font-size:13px;line-height:1.5}.fa-actions{display:flex;flex-wrap:wrap;justify-content:flex-end;align-items: center;gap:10px;margin-left:auto}.fa-actions .button{white-space:nowrap;min-height:46px;padding:11px 20px;font-size:15px}.fa-link{display:inline-flex;color:#526b56;cursor:pointer;background:0 0;border:0;border-radius:8px;justify-content:center;align-items: center;gap:6px;min-height:42px;padding:7px 10px;font-size:13px}.fa-link:disabled{opacity:.45;cursor:default}.fa-playback{display:flex;gap:7px}.fa-playback button{display:grid;color:#4f6b55;cursor:pointer;background:#f1f5e8;border:1px solid #b7c8a9;border-radius:10px;place-items: center;width:42px;height:42px}.fa-carry-records{display:flex;flex-wrap:wrap;gap:6px 18px}.fa-carry-records span{display:flex;align-items: center;gap:8px;font:500 14px Fredoka,sans-serif}.fa-carry-records b{color:var(--fa-muted);font:600 12px sans-serif}.fa-record-dialog{color:#24364d;background:#fffdf5;border:2px solid #24364d;border-radius:20px;width:min(450px,100vw - 32px);padding:24px}.fa-record-dialog::backdrop{background:#24364d55}.fa-record-dialog header{display:flex;justify-content:space-between;align-items: center;gap:20px}.fa-record-dialog h2{margin:0;font-size:19px}.fa-record-dialog header button{display:grid;cursor:pointer;background:0 0;border:0;border-radius:8px;place-items: center;width:40px;height:40px}.fa-record-dialog p{text-align:center;font:600 31px Fredoka,sans-serif}.fa-record-dialog .fa-carry-records{flex-direction:column;gap:10px}.fa-app button:focus-visible{outline:3px solid #3e718d;outline-offset:4px}.fa-app a:focus-visible{outline:3px solid #3e718d;outline-offset:4px}.fa-app ::selection{color:#24364d;background:#ffe396}@media (width<=1049px){.fa-main{padding:12px 16px 22px}.fa-table{padding-inline-start:18px;padding-inline-end:18px}.fa-app{--fa-cell:86px}.fa-tree-boxed{grid-template-columns:1fr;gap:20px;max-width:420px}.fa-boxed-inputs,.fa-boxed-results{justify-self:stretch}.fa-whole-cover{width:min(360px,100%);min-height:185px;margin:auto}}@media (width<=760px){.fa-main{padding:10px 10px 18px}.fa-title{gap:10px}.fa-title .bc-route{font-size:17px}.fa-subtitles{display:none}.fa-table{border-radius:22px;padding:12px 12px 8px}.fa-guide{gap:10px;min-height:70px;padding-bottom:12px}.fa-guide img{flex-basis:33px;width:33px;height:42px}.fa-guide p{font-size:18px;line-height:1.6}.fa-app{--fa-cell:76px;--fa-tag:20px;--fa-weight:21px;--fa-plus:24px}.fa-tag{font-size:12px}.fa-cell .bc-weight{font-size:16px}.fa-board{padding:16px 8px 12px}.fa-tree.fa-landscape{gap:12px}.fa-stage{gap:9px}.fa-join{gap:7px}.fa-ha{width:66px;padding:11px 6px;font-size:13px}.fa-ha>small{font-size:11px}.fa-brace{flex-basis:13px;width:13px}.fa-tree-manual{--manual-card:80px;gap:16px;margin-block-start:2px;margin-block-end:2px}.fa-inputs,.fa-results{border-radius:14px;padding:12px}.fa-tree h2{margin-bottom:12px;font-size:19px}.fa-input-cards,.fa-results>div{gap:14px}.fa-input-cards>.fa-input:not(:last-child):after{font-size:18px;right:-12px}.fa-input>strong,.fa-result>strong{margin-top:8px;font-size:23px}.fa-result>small{gap:3px;min-height:25px;font-size:11px}.fa-tree-boxed{--boxed-card:78px}.fa-equation{min-height:38px;margin:8px 0 10px;font-size:26px}.fa-bottom{flex-wrap:wrap;gap:8px;min-height:65px;padding:10px 0 6px}.fa-context{font-size:12px}.fa-actions{gap:6px}.fa-actions .button{padding:10px 15px;font-size:13px}.fa-link{padding-inline-start:6px;padding-inline-end:6px;font-size:12px}.fa-playback{gap:5px}.fa-playback button{width:40px;height:40px}.fa-carry-records{gap:4px 12px}.fa-carry-records span{font-size:12px}.fa-carry-records b{font-size:11px}.fa-mismatch{grid-template-columns:auto auto auto;gap:6px 12px;padding:7px 12px}.fa-mismatch-title{grid-column:1/-1;max-width:none}.fa-mismatch b{font-size:24px}}@media (width<=480px){.fa-tree-manual{grid-template-columns:1.4fr 1fr;--manual-card:56px;gap:10px}.fa-tree-manual .fa-inputs,.fa-tree-manual .fa-results{padding:10px 7px}.fa-tree-manual .fa-input-cards{gap:8px}.fa-tree-manual .fa-results>div{gap:10px}.fa-tree-manual .fa-input-cards>.fa-input:not(:last-child):after{font-size:15px;right:-8px}.fa-tree-manual .fa-tag{font-size:11px}.fa-tree-manual .bc-weight{font-size:15px}.fa-tree-manual .fa-result>small{gap:2px;font-size:10px}}@media (width>=761px) and (height<=900px){.fa-app{--fa-cell:76px;--fa-tag:18px;--fa-weight:20px;--fa-plus:20px}.fa-main{padding-top:10px}.fa-table{padding-top:12px}.fa-guide{min-height:62px}.fa-board{padding-top:14px;padding-bottom:8px}.fa-guide p{font-size:16px}.fa-tree-manual{--manual-card:90px}.fa-equation{min-height:36px;margin-block-start:5px;margin-block-end:5px;font-size:26px}.fa-bottom{min-height:60px;padding-block-start:8px;padding-block-end:8px}}@media (prefers-reduced-motion:reduce){.fa-app .bc-card{transition:none}}.fa-tree-first .fa-mid{position:relative;isolation:isolate}.fa-tree-first .fa-mid:before{content:"";position:absolute;z-index:-1;background:#edf2e4;border-radius:14px;inset:-14px}.fa-tree-third .fa-next-pair,.fa-tree-second .fa-stage-second{position:relative;outline:2px solid #c29b3e;outline-offset:10px;background:#fff2c755;border-radius:14px}.fa-tree-third .fa-next-pair{outline-style:dashed}.fa-group-label{position:absolute;z-index:1;background:var(--bc-paper);color:#765b22;white-space:nowrap;padding:1px 7px;font-size:13px;font-weight:650;top:-28px;left:-3px}.fa-tree-first .fa-group-label{color:#435e50}.fa-tree.fa-landscape:not(.has-or){margin-inline-start:auto;margin-inline-end:auto;padding-top:24px}.fa-landscape:not(.has-or) .fa-mid{display:grid;grid-template-columns:var(--fa-cell)auto;align-items: start;gap:26px}.fa-landscape:not(.has-or) .fa-mid>.fa-plus{display:none}.fa-tree-first .fa-mid{align-self: flex-start}.fa-tree-first .fa-mid>.fa-group-label{grid-column:1/-1}.fa-actions>.button{order:1}.fa-tree.fa-landscape.fa-tree-first{gap:0;padding-top:40px}.fa-first-output-link{--output-center:calc((var(--fa-cell)/.84 + var(--fa-tag) + var(--fa-weight) + 8px)/2);position:relative;color:#6a866d;flex:0 0 102px;align-self:stretch}.fa-first-output-link svg{position:absolute;left:0;top:var(--output-center);height:calc(50% - var(--output-center));overflow:visible;fill:none;stroke:currentColor;stroke-width:2;width:72px}.fa-first-output-link path{vector-effect:non-scaling-stroke}.fa-first-output-link i{position:absolute;left:66px;top:calc(var(--output-center) - 4px);border-top:2px solid;border-right:2px solid;width:8px;height:8px;transform:rotate(45deg)}.fa-tree-first .fa-group-label{text-align:center;white-space:normal;background:0 0;max-width:100%;padding:0;line-height:1.4;inset:auto 0 calc(100% + 22px)}.fa-handoff-card{position:relative}.fa-handoff-target{position:absolute;cursor:pointer;background:0 0;border:3px solid #c09320;border-radius:14px;inset:0}.fa-handoff-target>span{position:absolute;white-space:nowrap;color:#28445a;background:#fff0b2;border:1px solid #c09320;border-radius:8px;padding:6px 8px;font-size:16px;top:calc(100% + 8px);left:50%;transform:translate(-50%)}.fa-handoff-target:focus-visible{outline:3px solid #365d8c;outline-offset:3px}.fa-tree-third .fa-next-pair.fa-handed-over{outline-style:solid;background:#ecf3e5}.fa-first-results{display:flex;gap:16px}.fa-handoff-origin,.fa-remainder-receiver{width:var(--fa-cell);min-width:var(--fa-cell)}.fa-moving-remainder{position:relative;z-index:2}.fa-landscape.has-handoff .fa-mid{grid-template-columns:calc(2*var(--fa-cell) + 16px)auto}.fa-tree.has-handoff{padding-bottom:48px}.fa-tree.has-handoff .fa-first-results{padding-bottom:42px}.fa-box-port small{white-space:nowrap}.fa-whole-cover{grid-template-columns:42px minmax(0,1fr)max-content}@media (width<=480px){.fa-guide p{font-size:18px;line-height:1.5}.fa-guide{min-height:76px}.fa-board:has(.fa-landscape:-webkit-any(.has-second,.has-handoff)){overflow-x:visible;padding-inline-start:0;padding-inline-end:0}.fa-board:has(.fa-landscape:-moz-any(.has-second,.has-handoff)){overflow-x:visible;padding-inline-start:0;padding-inline-end:0}.fa-board:has(.fa-landscape:is(.has-second,.has-handoff)){overflow-x:visible;padding-inline-start:0;padding-inline-end:0}.fa-tree.fa-landscape:-webkit-any(.has-second,.has-handoff){--fa-cell:clamp(40px,calc((100vw - 160px)/4),56px);display:grid;grid-template-columns:minmax(0,1fr)auto;box-sizing:border-box;gap:24px 8px;width:100%;padding:28px 0 4px}.fa-tree.fa-landscape:-moz-any(.has-second,.has-handoff){--fa-cell:clamp(40px,calc((100vw - 160px)/4),56px);display:grid;grid-template-columns:minmax(0,1fr)auto;box-sizing:border-box;gap:24px 8px;width:100%;padding:28px 0 4px}.fa-tree.fa-landscape:is(.has-second,.has-handoff){--fa-cell:clamp(40px,calc((100vw - 160px)/4),56px);display:grid;grid-template-columns:minmax(0,1fr)auto;box-sizing:border-box;gap:24px 8px;width:100%;padding:28px 0 4px}.fa-tree.fa-landscape:-webkit-any(.has-second,.has-handoff) .fa-mid{display:contents}.fa-tree.fa-landscape:-moz-any(.has-second,.has-handoff) .fa-mid{display:contents}.fa-tree.fa-landscape:is(.has-second,.has-handoff) .fa-mid{display:contents}.fa-tree.fa-landscape:-webkit-any(.has-second,.has-handoff) .fa-stage-first{grid-column:1;grid-row:1;align-items: center;gap:6px}.fa-tree.fa-landscape:-moz-any(.has-second,.has-handoff) .fa-stage-first{grid-column:1;grid-row:1;align-items: center;gap:6px}.fa-tree.fa-landscape:is(.has-second,.has-handoff) .fa-stage-first{grid-column:1;grid-row:1;align-items: center;gap:6px}.fa-tree.fa-landscape:-webkit-any(.has-second,.has-handoff) .fa-first-results{grid-column:2;grid-row:1;align-self: start;gap:8px}.fa-tree.fa-landscape:-moz-any(.has-second,.has-handoff) .fa-first-results{grid-column:2;grid-row:1;align-self: start;gap:8px}.fa-tree.fa-landscape:is(.has-second,.has-handoff) .fa-first-results{grid-column:2;grid-row:1;align-self: start;gap:8px}.fa-tree.fa-landscape:-webkit-any(.has-second,.has-handoff) .fa-stage-first>.fa-pair{flex-direction:row;gap:4px}.fa-tree.fa-landscape:-moz-any(.has-second,.has-handoff) .fa-stage-first>.fa-pair{flex-direction:row;gap:4px}.fa-tree.fa-landscape:is(.has-second,.has-handoff) .fa-stage-first>.fa-pair{flex-direction:row;gap:4px}.fa-tree.fa-landscape:-webkit-any(.has-second,.has-handoff) .fa-next-pair{flex-direction:row;gap:4px}.fa-tree.fa-landscape:-moz-any(.has-second,.has-handoff) .fa-next-pair{flex-direction:row;gap:4px}.fa-tree.fa-landscape:is(.has-second,.has-handoff) .fa-next-pair{flex-direction:row;gap:4px}.fa-tree.fa-landscape:-webkit-any(.has-second,.has-handoff) .fa-stage-second>.fa-pair{flex-direction:row;gap:4px}.fa-tree.fa-landscape:-moz-any(.has-second,.has-handoff) .fa-stage-second>.fa-pair{flex-direction:row;gap:4px}.fa-tree.fa-landscape:is(.has-second,.has-handoff) .fa-stage-second>.fa-pair{flex-direction:row;gap:4px}.fa-tree.fa-landscape.has-handoff .fa-stage-first>.fa-pair{flex-direction:column}.fa-tree.fa-landscape:-webkit-any(.has-second,.has-handoff) .fa-plus{flex:0 0 14px;width:14px;height:auto;min-height:0;font-size:18px}.fa-tree.fa-landscape:-moz-any(.has-second,.has-handoff) .fa-plus{flex:0 0 14px;width:14px;height:auto;min-height:0;font-size:18px}.fa-tree.fa-landscape:is(.has-second,.has-handoff) .fa-plus{flex:0 0 14px;width:14px;height:auto;min-height:0;font-size:18px}.fa-tree.fa-landscape:-webkit-any(.has-second,.has-handoff) .fa-stage-second{grid-column:1/-1;grid-row:2;display:grid;grid-template-columns:auto auto;justify-content:center;align-items: center;gap:10px}.fa-tree.fa-landscape:-moz-any(.has-second,.has-handoff) .fa-stage-second{grid-column:1/-1;grid-row:2;display:grid;grid-template-columns:auto auto;justify-content:center;align-items: center;gap:10px}.fa-tree.fa-landscape:is(.has-second,.has-handoff) .fa-stage-second{grid-column:1/-1;grid-row:2;display:grid;grid-template-columns:auto auto;justify-content:center;align-items: center;gap:10px}.fa-tree.fa-landscape:-webkit-any(.has-second,.has-handoff) .fa-stage-second>.fa-pair:last-child{grid-column:1/-1;justify-self:center}.fa-tree.fa-landscape:-moz-any(.has-second,.has-handoff) .fa-stage-second>.fa-pair:last-child{grid-column:1/-1;justify-self:center}.fa-tree.fa-landscape:is(.has-second,.has-handoff) .fa-stage-second>.fa-pair:last-child{grid-column:1/-1;justify-self:center}.fa-tree.fa-landscape:-webkit-any(.has-second,.has-handoff) .fa-mid>.fa-plus{display:none}.fa-tree.fa-landscape:-moz-any(.has-second,.has-handoff) .fa-mid>.fa-plus{display:none}.fa-tree.fa-landscape:is(.has-second,.has-handoff) .fa-mid>.fa-plus{display:none}.fa-tree.fa-landscape:-webkit-any(.has-second,.has-handoff) .fa-ha{width:64px;padding:8px 4px;font-size:16px}.fa-tree.fa-landscape:-moz-any(.has-second,.has-handoff) .fa-ha{width:64px;padding:8px 4px;font-size:16px}.fa-tree.fa-landscape:is(.has-second,.has-handoff) .fa-ha{width:64px;padding:8px 4px;font-size:16px}.fa-tree.fa-landscape:-webkit-any(.has-second,.has-handoff) .fa-join{gap:4px}.fa-tree.fa-landscape:-moz-any(.has-second,.has-handoff) .fa-join{gap:4px}.fa-tree.fa-landscape:is(.has-second,.has-handoff) .fa-join{gap:4px}.fa-tree.fa-landscape:-webkit-any(.has-second,.has-handoff) .fa-brace{flex-basis:9px;width:9px}.fa-tree.fa-landscape:-moz-any(.has-second,.has-handoff) .fa-brace{flex-basis:9px;width:9px}.fa-tree.fa-landscape:is(.has-second,.has-handoff) .fa-brace{flex-basis:9px;width:9px}.fa-tree.fa-landscape:-webkit-any(.has-second,.has-handoff) .fa-group-label{font-size:16px}.fa-tree.fa-landscape:-moz-any(.has-second,.has-handoff) .fa-group-label{font-size:16px}.fa-tree.fa-landscape:is(.has-second,.has-handoff) .fa-group-label{font-size:16px}}.ma-app{--ma-column-width:156px;--ma-card-width:44px;--ma-card-height:58px;--ma-wire:#638b6b;overflow-x:clip}.ma-workbench{--ma-column-width:188px}.ma-width-2.ma-workbench{--ma-column-width:156px}.ma-app .bc-header{height:58px}.ma-main{min-width:0;max-width:1320px;margin:auto;padding:14px 26px 24px}.ma-title{display:flex;flex-wrap:wrap;align-items: center;gap:10px;margin-bottom:10px}.ma-title h1{margin:0;font-size:clamp(22px,3vw,30px)}.ma-subtitles{color:#6a7c70;font-size:12px}.ma-app .lesson-progress{margin-bottom:9px}.ma-table{padding:12px 24px 16px}.ma-table .bc-guide{min-height:62px;padding-bottom:10px}.ma-guided .bc-guide{position:sticky;background:var(--bc-paper);z-index:5;top:0}.ma-table .bc-guide>img{width:38px;height:44px}.ma-error p{color:#9c493a}.ma-help{background:#eef2e3;border-radius:12px;padding:10px 14px;font-size:14px}.ma-board{overflow-x:auto;overscroll-behavior-x:contain;scrollbar-width:thin;max-width:100%;padding:10px 2px 4px}.ma-board[hidden]{display:none}.ma-width-2.ma-guided .ma-board{overflow:visible}.ma-columns{display:grid;position:relative;gap:24px;width:max-content;margin:auto}.ma-column{position:relative;display:flex;border-radius:14px;flex-direction:column;align-items: center;gap:0;padding:4px 0}.ma-column.ma-current{background:#fff4cb;box-shadow:inset 0 0 0 2px #e1b551}.ma-column-title{color:#59705c;min-height:18px;font-size:12px;font-weight:750}.ma-inputs{display:flex;justify-content:space-around;align-items: start;width:100%;margin-top:5px}.ma-input{width:var(--ma-card-width);text-align:center;position:relative}.ma-input>span{display:flex;color:#647260;overflow-wrap:anywhere;justify-content:center;align-items: center;height:28px;font-size:11px;line-height:1.2}.ma-input:after{content:"";position:absolute;border-left:2px solid var(--ma-wire);height:22px;top:100%;left:calc(50% - 1px)}.ma-prompt-card .bc-card,.ma-prompt-card .ma-unknown>div{outline:3px solid #cf9431;outline-offset:3px}.ma-prompt-card>span{color:#97611f;font-weight:800}.ma-card{width:var(--ma-card-width);text-align:center;position:relative}.ma-card .bc-card-slot{width:var(--ma-card-width)}.ma-card .bc-weight{align-items: center;gap:2px;height:16px;min-height:16px;margin-bottom:3px;font-size:14px;line-height:16px}.ma-card .bc-weight small{font-size:11px;line-height:1}.ma-card .bc-card{width:var(--ma-card-width);height:var(--ma-card-height);border-radius:9px}.ma-card .bc-face{border-width:2px;border-radius:9px}.ma-card .bc-card-rotor{transition:transform .4s ease-in-out}.ma-card .bc-corner{font-size:9px;top:3px;left:3px}.ma-card .bc-corner.bottom{inset:auto 3px 3px auto}.ma-card .bc-back-border{border-radius:5px;inset:4px}.ma-card .bc-back-brand{gap:5px}.ma-card .bc-back-name{font-size:6px}.ma-card .brand-symbol{width:17px;height:17px}.ma-card .brand-symbol svg{width:11px;height:11px}.ma-card .bc-card:disabled{opacity:1;cursor:default}.ma-card .bc-dots{width:calc(var(--ma-card-width) - 10px);height:calc(var(--ma-card-height) - 13px)}.ma-large-value .bc-dots{visibility:hidden}.ma-large-value .bc-front:after{content:var(--ma-value);position:absolute;display:grid;pointer-events:none;place-items: center;font-size:18px;font-weight:800;inset:0}.ma-bit{display:block;margin-top:3px;font:700 12px/14px Fredoka,sans-serif}.ma-unknown .bc-weight{display:block}.ma-unknown>div{width:var(--ma-card-width);height:var(--ma-card-height);display:grid;color:#71836a;background:#f1f2e8;border:2px dashed #adbba2;border-radius:9px;place-items: center;font:700 23px Fredoka,sans-serif}.ma-machine{color:#5b4720;display:flex;background:#ffd365;border:2px solid #75602a;border-radius:12px;justify-content:center;align-items: center;gap:6px;width:calc(100% - 12px);min-height:66px;margin:22px 0;padding:8px 4px;font-size:14px;box-shadow:0 4px #bfa454}.ma-machine strong{font-size:14px;line-height:1.2}.ma-machine.empty{box-shadow:none;color:#776d4d;background:#f5f0dc;border-style:dashed}.ma-machine:disabled{opacity:1;cursor:default}.ma-machine small{font-size:12px}.ma-outputs{display:flex;justify-content:space-around;align-items: start;width:100%}.ma-output{position:relative;width:var(--ma-card-width);display:flex;flex-direction:column;align-items: center}.ma-output:before{content:"";position:absolute;border-left:2px solid var(--ma-wire);height:22px;bottom:100%;left:calc(50% - 1px)}.ma-output>span{text-align:center;color:#5d7660;width:70px;min-height:28px;margin-top:5px;font-size:11px;line-height:1.2}.ma-output-digit{color:#5b4822;height:22px;font:700 20px/22px Fredoka,sans-serif}.ma-intermediate-carry{opacity:.3}.ma-bit{display:none}.ma-local-equation{color:#6d592b;letter-spacing:.015em;min-height:18px;font:600 15px/18px Fredoka,sans-serif}.ma-overview{max-width:470px;margin:0 auto}.ma-overview-numbers{display:flex;color:#6d7b65;flex-wrap:wrap;justify-content:center;gap:4px 18px;margin-bottom:6px;font-size:11px}.ma-overview-numbers b{letter-spacing:.015em;font:600 15px Fredoka,sans-serif}.ma-overview-slots{display:flex;justify-content:center;gap:9px;padding:0}.ma-overview-slots button{color:#6f6544;display:flex;background:#eee9d6;border:1px solid #a6b58b;border-radius:9px;justify-content:center;align-items: center;gap:5px;min-width:55px;min-height:44px;font-size:14px}.ma-overview-slots button.empty{border-style:dashed}.ma-overview-slots button[aria-pressed=true]{background:#ffecac;border:2px solid #b79438}.ma-result-cards{display:flex;text-align:center;justify-content:center;gap:12px;padding:18px 0 8px}.ma-result-cards .ma-output-digit{display:block;margin-top:6px}.ma-whole-result{display:flex;background:#fff0bd;border-radius:14px;flex-wrap:wrap;justify-content:center;align-items:baseline;gap:7px 12px;margin-top:9px;padding:9px 12px}.ma-result-title{display:block;color:#785e29;text-align:center;margin-bottom:0;font-size:12px;font-weight:800}.ma-answer{display:flex;flex-wrap:wrap;justify-content:center;align-items:baseline;gap:7px 20px;padding-top:0}.ma-answer strong{color:#5b4822;font:700 22px Fredoka,sans-serif}.ma-answer>span{color:#7c6c45;font-size:13px}.ma-answer b{letter-spacing:.07em;font:600 16px Fredoka,sans-serif}.ma-actions{display:flex;flex-wrap:wrap;justify-content:center;align-items: center;gap:12px;padding:12px 0 0}.ma-actions:empty{display:none}.ma-actions>button:not(.button),.ma-experiments button,.ma-predict button{color:#4b6750;display:inline-flex;background:#f0f3e6;border:1px solid #b8c4a8;border-radius:10px;align-items: center;gap:7px;min-height:44px;padding:7px 12px;font-size:13px}.ma-predict{display:flex;gap:8px}.ma-predict button[aria-pressed=true]{background:#d6e8b8;border:2px solid #456c49}.ma-numbers{display:flex;flex-wrap:wrap;justify-content:center;gap:12px 25px;padding:10px 0 0}.ma-number{display:flex;position:relative;align-items: center;gap:9px;font-size:13px}.ma-number input{color:var(--bc-ink);background:#fffdf6;border:1px solid #9cac92;border-radius:9px;width:72px;min-height:44px;padding:5px 7px;font-size:18px;font-weight:700}.ma-experiments,.ma-build-status{display:flex;color:#65765b;flex-wrap:wrap;justify-content:center;align-items: center;gap:9px 14px;margin-top:10px;font-size:12px}.ma-app button:focus-visible{outline:3px solid #347d96;outline-offset:3px}.ma-app a:focus-visible{outline:3px solid #347d96;outline-offset:3px}.ma-app input:focus-visible{outline:3px solid #347d96;outline-offset:3px}.ma-board:focus-visible{outline:3px solid #347d96;outline-offset:3px}@media (width<=650px){.ma-main{padding:12px 10px 20px}.ma-table{border-radius:20px;padding:10px 10px 13px}.ma-app .bc-header{padding:0 16px}.ma-subtitles{display:none}.ma-title h1{width:100%}.ma-title .bc-lesson-actions{margin-left:0}.ma-table .bc-guide{gap:8px}.ma-table .bc-guide>p{font-size:14px}.ma-table .bc-guide>img{width:32px;height:38px}.ma-whole-result{padding:8px 4px}.ma-actions .button{min-height:44px;font-size:13px}.ma-overview-numbers{gap:10px}.ma-overview-slots{gap:7px}}@media (prefers-reduced-motion:reduce){.ma-card .bc-card-rotor{transition:none}}@media (width>=600px){.ma-guided,.ma-width-2.ma-workbench{--ma-column-width:220px;--ma-card-width:56px;--ma-card-height:70px}.ma-guided .ma-title h1{width:auto}.ma-guided .ma-title .bc-lesson-actions{margin-left:auto}}.ma-outputs .bc-card-slot,.ma-outputs .ma-unknown{display:flex;flex-direction:column}.ma-outputs .bc-weight{order:1;margin:3px 0 0}.ma-input:before,.ma-output:after{content:"";position:absolute;border-left:4px solid #0000;border-right:4px solid #0000;border-top:5px solid var(--ma-wire);width:0;height:0;left:calc(50% - 4px)}.ma-input:before{top:calc(100% + 17px)}.ma-output:after{top:-5px}.ma-hidden{visibility:hidden;pointer-events:none}.ma-no-input-wires .ma-input:before,.ma-no-input-wires .ma-input:after{visibility:hidden}.ma-early .bc-guide{min-height:62px}@media (width<=650px){.ma-early .bc-guide{min-height:90px}}.ma-staircase{gap:0}.ma-width-2,.ma-width-2.ma-workbench,.ma-width-4{--ma-column-width:188px}.ma-staircase .ma-column{width:var(--ma-column-width);align-self: start}.ma-staircase .ma-column-title{width:calc(var(--ma-column-width)*7/12);text-align:center;align-self: flex-start}.ma-staircase .ma-inputs{justify-content:initial}.ma-staircase .ma-input{margin:0 calc((var(--ma-column-width)/3 - var(--ma-card-width))/2);flex-shrink:0}.ma-staircase .ma-machine{flex-shrink:0;width:calc(100% - 20px);height:54px;min-height:54px;margin:16px 0}.ma-shared-placeholder{height:calc(var(--ma-card-height) + 19px)}.ma-shared-input>span{visibility:hidden}.ma-shared-carry .bc-weight{display:none}.ma-shared-carry>span{position:absolute;width:calc(var(--ma-column-width)/2 - var(--ma-card-width) - 6px);white-space:pre-line;overflow-wrap:anywhere;margin:0;font-size:9px;top:0;left:calc(100% + 3px)}.ma-shared-carry>span b{font-size:14px}.ma-staircase .ma-local-equation{white-space:normal;align-self: flex-end;width:50%;font-size:14px}.ma-staircase .ma-shared-carry .ma-output-digit{visibility:hidden}@media (width>=600px){.ma-width-2,.ma-width-2.ma-workbench,.ma-width-4{--ma-column-width:220px}}.ma-playarea,.ma-machine-area,.ma-side-actions{min-width:0}.ma-width-4.ma-workbench .ma-overview-numbers{display:none}.ma-staircase .ma-column-title{position:absolute;text-align:right;width:42px;min-height:0;font-size:12px;line-height:1.3;top:52px;left:-44px}.ma-staircase{margin-left:44px;margin-right:0}.ma-width-2 .ma-board,.ma-width-4 .ma-board{width:max-content;max-width:100%;margin:auto}.ma-width-2 .ma-actions,.ma-width-4 .ma-actions{justify-content:flex-end}@media (width>=900px){.ma-width-2 .ma-playarea,.ma-width-4 .ma-playarea{display:grid;grid-template-columns:140px minmax(0,1fr)240px;align-items: start;gap:12px;max-width:840px;margin:auto}.ma-width-2 .ma-numbers,.ma-width-4 .ma-numbers{flex-direction:column;align-items: flex-start;gap:12px;margin-top:55px;padding:0}.ma-width-2 .ma-number,.ma-width-4 .ma-number{flex-direction:row;align-items: center;gap:7px;font-size:12px}:-webkit-any(.ma-width-2,.ma-width-4) .ma-number input{width:56px}:-moz-any(.ma-width-2,.ma-width-4) .ma-number input{width:56px}:is(.ma-width-2,.ma-width-4) .ma-number input{width:56px}.ma-width-2 .ma-machine-area,.ma-width-4 .ma-machine-area{grid-column:2}:-webkit-any(.ma-width-2,.ma-width-4) .ma-side-actions{grid-column:3;display:flex;flex-direction:column;gap:12px;padding-top:55px}:-moz-any(.ma-width-2,.ma-width-4) .ma-side-actions{grid-column:3;display:flex;flex-direction:column;gap:12px;padding-top:55px}:is(.ma-width-2,.ma-width-4) .ma-side-actions{grid-column:3;display:flex;flex-direction:column;gap:12px;padding-top:55px}.ma-width-4 .ma-side-actions .ma-result-cards{--ma-card-width:44px;--ma-card-height:58px;flex-wrap:nowrap;gap:4px;padding:0}:-webkit-any(.ma-width-2,.ma-width-4) .ma-side-actions .ma-actions{flex-direction:column;align-items:stretch;gap:10px;margin:0;padding:0}:-moz-any(.ma-width-2,.ma-width-4) .ma-side-actions .ma-actions{flex-direction:column;align-items:stretch;gap:10px;margin:0;padding:0}:is(.ma-width-2,.ma-width-4) .ma-side-actions .ma-actions{flex-direction:column;align-items:stretch;gap:10px;margin:0;padding:0}:-webkit-any(.ma-width-2,.ma-width-4) .ma-side-actions .ma-experiments{flex-direction:column;align-items:stretch;gap:10px;margin:0;padding:0}:-moz-any(.ma-width-2,.ma-width-4) .ma-side-actions .ma-experiments{flex-direction:column;align-items:stretch;gap:10px;margin:0;padding:0}:is(.ma-width-2,.ma-width-4) .ma-side-actions .ma-experiments{flex-direction:column;align-items:stretch;gap:10px;margin:0;padding:0}:-webkit-any(.ma-width-2,.ma-width-4) .ma-side-actions .ma-actions>*{text-align:center;justify-content:center}:-moz-any(.ma-width-2,.ma-width-4) .ma-side-actions .ma-actions>*{text-align:center;justify-content:center}:is(.ma-width-2,.ma-width-4) .ma-side-actions .ma-actions>*{text-align:center;justify-content:center}:-webkit-any(.ma-width-2,.ma-width-4) .ma-side-actions .ma-experiments button{text-align:center;justify-content:center}:-moz-any(.ma-width-2,.ma-width-4) .ma-side-actions .ma-experiments button{text-align:center;justify-content:center}:is(.ma-width-2,.ma-width-4) .ma-side-actions .ma-experiments button{text-align:center;justify-content:center}:-webkit-any(.ma-width-2,.ma-width-4) .ma-side-actions .ma-whole-result{margin:0}:-moz-any(.ma-width-2,.ma-width-4) .ma-side-actions .ma-whole-result{margin:0}:is(.ma-width-2,.ma-width-4) .ma-side-actions .ma-whole-result{margin:0}.ma-staircase .ma-column-title{width:72px;font-size:14px;left:-80px}.ma-staircase{margin-left:80px}.ma-result-only .ma-machine-area{display:none}:-webkit-any(.ma-width-2,.ma-width-4) .ma-result-only .ma-side-actions{grid-column:1/-1;align-items: center;padding-top:15px}:-moz-any(.ma-width-2,.ma-width-4) .ma-result-only .ma-side-actions{grid-column:1/-1;align-items: center;padding-top:15px}:is(.ma-width-2,.ma-width-4) .ma-result-only .ma-side-actions{grid-column:1/-1;align-items: center;padding-top:15px}.ma-playarea>.ma-result-cards{grid-column:2/-1;grid-row:1;flex-wrap:nowrap;padding:0 0 12px}.ma-result-only>.ma-result-cards{grid-column:1/-1}.ma-result-only .ma-side-actions{grid-row:2}}@media (width>=900px) and (width<=1050px){:-webkit-any(.ma-width-2,.ma-width-4) .ma-playarea{grid-template-columns:100px minmax(0,1fr)240px}:-moz-any(.ma-width-2,.ma-width-4) .ma-playarea{grid-template-columns:100px minmax(0,1fr)240px}:is(.ma-width-2,.ma-width-4) .ma-playarea{grid-template-columns:100px minmax(0,1fr)240px}:-webkit-any(.ma-width-2,.ma-width-4) .ma-number{flex-direction:column;align-items: flex-start}:-moz-any(.ma-width-2,.ma-width-4) .ma-number{flex-direction:column;align-items: flex-start}:is(.ma-width-2,.ma-width-4) .ma-number{flex-direction:column;align-items: flex-start}}.ma-staircase .ma-input:after,.ma-staircase .ma-output:before{height:16px}.ma-staircase .ma-input:before{top:calc(100% + 11px)}.ma-staircase .ma-column.ma-current{box-shadow:none;background:0 0}.ma-staircase .ma-current .ma-machine{outline:3px solid #e1b551;outline-offset:2px}:-webkit-any(.ma-width-2,.ma-width-4,.ma-width-8) .ma-operand-a{--ma-operand-color:#287f80;--ma-operand-tint:#e0f2ef;--ma-operand-radius:50%}:-moz-any(.ma-width-2,.ma-width-4,.ma-width-8) .ma-operand-a{--ma-operand-color:#287f80;--ma-operand-tint:#e0f2ef;--ma-operand-radius:50%}:is(.ma-width-2,.ma-width-4,.ma-width-8) .ma-operand-a{--ma-operand-color:#287f80;--ma-operand-tint:#e0f2ef;--ma-operand-radius:50%}:-webkit-any(.ma-width-2,.ma-width-4,.ma-width-8) .ma-operand-b{--ma-operand-color:#ba674f;--ma-operand-tint:#fae8df;--ma-operand-radius:2px}:-moz-any(.ma-width-2,.ma-width-4,.ma-width-8) .ma-operand-b{--ma-operand-color:#ba674f;--ma-operand-tint:#fae8df;--ma-operand-radius:2px}:is(.ma-width-2,.ma-width-4,.ma-width-8) .ma-operand-b{--ma-operand-color:#ba674f;--ma-operand-tint:#fae8df;--ma-operand-radius:2px}:-webkit-any(.ma-width-2,.ma-width-4,.ma-width-8) :-webkit-any(.ma-operand-a,.ma-operand-b)>span{position:relative;color:var(--ma-operand-color);font-weight:750}:-moz-any(.ma-width-2,.ma-width-4,.ma-width-8) :-moz-any(.ma-operand-a,.ma-operand-b)>span{position:relative;color:var(--ma-operand-color);font-weight:750}:is(.ma-width-2,.ma-width-4,.ma-width-8) :is(.ma-operand-a,.ma-operand-b)>span{position:relative;color:var(--ma-operand-color);font-weight:750}:-webkit-any(.ma-width-2,.ma-width-4,.ma-width-8) :-webkit-any(.ma-operand-a,.ma-operand-b)>span:before{content:"";position:absolute;background:var(--ma-operand-color);border-radius:var(--ma-operand-radius);width:7px;height:7px;top:calc(50% - 3.5px);left:-9px}:-moz-any(.ma-width-2,.ma-width-4,.ma-width-8) :-moz-any(.ma-operand-a,.ma-operand-b)>span:before{content:"";position:absolute;background:var(--ma-operand-color);border-radius:var(--ma-operand-radius);width:7px;height:7px;top:calc(50% - 3.5px);left:-9px}:is(.ma-width-2,.ma-width-4,.ma-width-8) :is(.ma-operand-a,.ma-operand-b)>span:before{content:"";position:absolute;background:var(--ma-operand-color);border-radius:var(--ma-operand-radius);width:7px;height:7px;top:calc(50% - 3.5px);left:-9px}:-webkit-any(.ma-width-2,.ma-width-4,.ma-width-8) :-webkit-any(.ma-operand-a,.ma-operand-b)>.ma-card{background:var(--ma-operand-tint);box-shadow:0 0 0 3px var(--ma-operand-tint);border-radius:9px}:-moz-any(.ma-width-2,.ma-width-4,.ma-width-8) :-moz-any(.ma-operand-a,.ma-operand-b)>.ma-card{background:var(--ma-operand-tint);box-shadow:0 0 0 3px var(--ma-operand-tint);border-radius:9px}:is(.ma-width-2,.ma-width-4,.ma-width-8) :is(.ma-operand-a,.ma-operand-b)>.ma-card{background:var(--ma-operand-tint);box-shadow:0 0 0 3px var(--ma-operand-tint);border-radius:9px}:-webkit-any(.ma-width-2,.ma-width-4,.ma-width-8) :-webkit-any(.ma-operand-a,.ma-operand-b)>input{background:var(--ma-operand-tint);border-color:var(--ma-operand-color)}:-moz-any(.ma-width-2,.ma-width-4,.ma-width-8) :-moz-any(.ma-operand-a,.ma-operand-b)>input{background:var(--ma-operand-tint);border-color:var(--ma-operand-color)}:is(.ma-width-2,.ma-width-4,.ma-width-8) :is(.ma-operand-a,.ma-operand-b)>input{background:var(--ma-operand-tint);border-color:var(--ma-operand-color)}@media (width>=900px){:-webkit-any(.ma-width-2,.ma-width-4) .ma-side-actions{align-self: center;padding-top:0}:-moz-any(.ma-width-2,.ma-width-4) .ma-side-actions{align-self: center;padding-top:0}:is(.ma-width-2,.ma-width-4) .ma-side-actions{align-self: center;padding-top:0}:-webkit-any(.ma-width-2,.ma-width-4) .ma-numbers{align-self: center;margin-top:0}:-moz-any(.ma-width-2,.ma-width-4) .ma-numbers{align-self: center;margin-top:0}:is(.ma-width-2,.ma-width-4) .ma-numbers{align-self: center;margin-top:0}}.ma-captioned .bc-weight{visibility:hidden}.ma-card-caption{position:absolute;color:#647260;text-align:center;white-space:nowrap;pointer-events:none;width:100%;height:16px;font:700 11px/16px Fredoka,sans-serif;top:0;left:0}:-webkit-any(.ma-width-2,.ma-width-4) .ma-number{display:grid;grid-template-columns:auto 56px;gap:4px 7px}:-moz-any(.ma-width-2,.ma-width-4) .ma-number{display:grid;grid-template-columns:auto 56px;gap:4px 7px}:is(.ma-width-2,.ma-width-4) .ma-number{display:grid;grid-template-columns:auto 56px;gap:4px 7px}.ma-number-decomposition{grid-column:1/-1;color:var(--ma-operand-color);white-space:nowrap;font:600 15px/20px Fredoka,sans-serif}@media (width>=900px) and (width<=1050px){:-webkit-any(.ma-width-2,.ma-width-4) .ma-number{grid-template-columns:1fr}:-moz-any(.ma-width-2,.ma-width-4) .ma-number{grid-template-columns:1fr}:is(.ma-width-2,.ma-width-4) .ma-number{grid-template-columns:1fr}}:-webkit-any(.ma-width-2,.ma-width-4) .ma-number input{width:56px}:-moz-any(.ma-width-2,.ma-width-4) .ma-number input{width:56px}:is(.ma-width-2,.ma-width-4) .ma-number input{width:56px}.ma-input-area{min-width:0}.ma-arithmetic{background:#f3f1e4;border-radius:12px;width:220px;max-width:100%;margin:14px auto 0;padding:12px 8px}.ma-arithmetic h2{margin:0 0 10px;font-size:14px}.ma-arithmetic table{border-collapse:collapse;table-layout:fixed;width:100%}.ma-arithmetic th,.ma-arithmetic td{text-align:center;border:1px solid #0000;height:30px;padding:3px 0;font:600 16px/20px Fredoka,sans-serif}.ma-arithmetic th:first-child{text-align:left;overflow-wrap:anywhere;width:100px;padding-right:4px;font-size:11px;font-weight:650;line-height:14px}.ma-arithmetic th small{display:block;white-space:nowrap;font-size:11px;line-height:13px}.ma-arithmetic .ma-carry-row td{color:#8c7133;font-size:12px}.ma-arithmetic :-webkit-any(.ma-operand-a,.ma-operand-b){color:var(--ma-operand-color)}.ma-arithmetic :-moz-any(.ma-operand-a,.ma-operand-b){color:var(--ma-operand-color)}.ma-arithmetic :is(.ma-operand-a,.ma-operand-b){color:var(--ma-operand-color)}.ma-arithmetic .ma-arithmetic-result th,.ma-arithmetic .ma-arithmetic-result td{border-top:2px solid #a5af98}.ma-arithmetic .ma-current-bit{background:#fff2c6;border-left:2px solid #d9a83a;border-right:2px solid #d9a83a}.ma-arithmetic thead .ma-current-bit{border-top:2px solid #d9a83a}.ma-arithmetic .ma-arithmetic-result .ma-current-bit{border-bottom:2px solid #d9a83a}.ma-arithmetic p{color:#6c795f;margin:9px 0 0;font-size:11px;line-height:1.4}@media (width>=1100px){:-webkit-any(.ma-width-2,.ma-width-4) .ma-playarea{grid-template-columns:220px minmax(0,1fr)240px;max-width:1000px}:-moz-any(.ma-width-2,.ma-width-4) .ma-playarea{grid-template-columns:220px minmax(0,1fr)240px;max-width:1000px}:is(.ma-width-2,.ma-width-4) .ma-playarea{grid-template-columns:220px minmax(0,1fr)240px;max-width:1000px}:-webkit-any(.ma-width-2,.ma-width-4) .ma-input-area{grid-column:1;align-self: center}:-moz-any(.ma-width-2,.ma-width-4) .ma-input-area{grid-column:1;align-self: center}:is(.ma-width-2,.ma-width-4) .ma-input-area{grid-column:1;align-self: center}}@media (width>=900px) and (width<=1099px){:-webkit-any(.ma-width-2,.ma-width-4) .ma-playarea{grid-template-columns:minmax(0,1fr)240px}:-moz-any(.ma-width-2,.ma-width-4) .ma-playarea{grid-template-columns:minmax(0,1fr)240px}:is(.ma-width-2,.ma-width-4) .ma-playarea{grid-template-columns:minmax(0,1fr)240px}:-webkit-any(.ma-width-2,.ma-width-4) .ma-input-area{grid-column:1/-1;display:flex;flex-wrap:wrap;justify-content:center;align-items: center;gap:20px}:-moz-any(.ma-width-2,.ma-width-4) .ma-input-area{grid-column:1/-1;display:flex;flex-wrap:wrap;justify-content:center;align-items: center;gap:20px}:is(.ma-width-2,.ma-width-4) .ma-input-area{grid-column:1/-1;display:flex;flex-wrap:wrap;justify-content:center;align-items: center;gap:20px}:-webkit-any(.ma-width-2,.ma-width-4) .ma-machine-area{grid-column:1}:-moz-any(.ma-width-2,.ma-width-4) .ma-machine-area{grid-column:1}:is(.ma-width-2,.ma-width-4) .ma-machine-area{grid-column:1}:-webkit-any(.ma-width-2,.ma-width-4) .ma-side-actions{grid-column:2}:-moz-any(.ma-width-2,.ma-width-4) .ma-side-actions{grid-column:2}:is(.ma-width-2,.ma-width-4) .ma-side-actions{grid-column:2}:-webkit-any(.ma-width-2,.ma-width-4).ma-guided .ma-playarea{grid-template-columns:minmax(0,1fr)}:-moz-any(.ma-width-2,.ma-width-4).ma-guided .ma-playarea{grid-template-columns:minmax(0,1fr)}:is(.ma-width-2,.ma-width-4).ma-guided .ma-playarea{grid-template-columns:minmax(0,1fr)}:-webkit-any(.ma-width-2,.ma-width-4).ma-guided .ma-side-actions{grid-column:1}:-moz-any(.ma-width-2,.ma-width-4).ma-guided .ma-side-actions{grid-column:1}:is(.ma-width-2,.ma-width-4).ma-guided .ma-side-actions{grid-column:1}}@media (width>=900px){:-webkit-any(.ma-width-2,.ma-width-4) .ma-result-only .ma-input-area{grid-column:1;grid-row:2}:-moz-any(.ma-width-2,.ma-width-4) .ma-result-only .ma-input-area{grid-column:1;grid-row:2}:is(.ma-width-2,.ma-width-4) .ma-result-only .ma-input-area{grid-column:1;grid-row:2}:-webkit-any(.ma-width-2,.ma-width-4) .ma-result-only .ma-side-actions{grid-column:2/-1;grid-row:2}:-moz-any(.ma-width-2,.ma-width-4) .ma-result-only .ma-side-actions{grid-column:2/-1;grid-row:2}:is(.ma-width-2,.ma-width-4) .ma-result-only .ma-side-actions{grid-column:2/-1;grid-row:2}}@media (width<=1099px){:-webkit-any(.ma-step-calculation,.ma-pair-demo) .ma-arithmetic{margin-top:0;padding:8px}:-moz-any(.ma-step-calculation,.ma-pair-demo) .ma-arithmetic{margin-top:0;padding:8px}:is(.ma-step-calculation,.ma-pair-demo) .ma-arithmetic{margin-top:0;padding:8px}.ma-width-4.ma-step-calculation .ma-overview{display:none}:-webkit-any(.ma-step-calculation,.ma-pair-demo) .ma-arithmetic h2{display:none}:-moz-any(.ma-step-calculation,.ma-pair-demo) .ma-arithmetic h2{display:none}:is(.ma-step-calculation,.ma-pair-demo) .ma-arithmetic h2{display:none}:-webkit-any(.ma-step-calculation,.ma-pair-demo) .ma-arithmetic p{display:none}:-moz-any(.ma-step-calculation,.ma-pair-demo) .ma-arithmetic p{display:none}:is(.ma-step-calculation,.ma-pair-demo) .ma-arithmetic p{display:none}:-webkit-any(.ma-step-calculation,.ma-pair-demo) .ma-whole-result{display:none}:-moz-any(.ma-step-calculation,.ma-pair-demo) .ma-whole-result{display:none}:is(.ma-step-calculation,.ma-pair-demo) .ma-whole-result{display:none}:-webkit-any(.ma-step-calculation,.ma-pair-demo) .ma-arithmetic th{height:24px;padding:2px 0}:-moz-any(.ma-step-calculation,.ma-pair-demo) .ma-arithmetic th{height:24px;padding:2px 0}:is(.ma-step-calculation,.ma-pair-demo) .ma-arithmetic th{height:24px;padding:2px 0}:-webkit-any(.ma-step-calculation,.ma-pair-demo) .ma-arithmetic td{height:24px;padding:2px 0}:-moz-any(.ma-step-calculation,.ma-pair-demo) .ma-arithmetic td{height:24px;padding:2px 0}:is(.ma-step-calculation,.ma-pair-demo) .ma-arithmetic td{height:24px;padding:2px 0}}.ma-width-8{--ma-column-width:220px;--ma-card-width:48px;--ma-card-height:64px}.ma-width-8 .ma-arithmetic{width:360px;padding:8px}.ma-width-8 .ma-arithmetic h2{margin-bottom:4px;font-size:12px}.ma-width-8 .ma-arithmetic p{margin-top:6px}.ma-width-8 .ma-arithmetic th,.ma-width-8 .ma-arithmetic td{height:24px;padding:2px 0;font-size:15px}.ma-width-8 .ma-arithmetic th:first-child{width:92px;font-size:13px}.ma-width-8 .ma-arithmetic thead th:not(:first-child){font-size:14px}.ma-width-8 .ma-arithmetic th b{white-space:nowrap}.ma-width-8 .ma-card-caption{font-size:14px}.ma-width-8 .ma-input-area{display:flex;flex-wrap:wrap;justify-content:center;align-items: center;gap:24px}.ma-width-8 .ma-numbers{flex-direction:column;gap:10px;padding:0}.ma-width-8 .ma-arithmetic{margin:0}.ma-width-8 .ma-machine-area{margin-top:16px}.ma-width-8 .ma-board{width:max-content;max-width:100%;margin:auto}.ma-width-8 .ma-side-actions{display:flex;flex-wrap:wrap;justify-content:center;align-items: center;gap:12px;max-width:900px;margin:12px auto 0}.ma-width-8 .ma-whole-result,.ma-width-8 .ma-experiments{margin:0}.ma-width-8 .ma-arithmetic-dock{position:sticky;z-index:4;pointer-events:none;height:0;top:16px}.ma-width-8 .ma-arithmetic-dock .ma-arithmetic{position:absolute;left:var(--ma-dock-x,0px);top:var(--ma-dock-y,0px);pointer-events:auto;box-shadow:0 3px 12px #3a4c2520}@media (width<=1199px){.ma-width-8 .ma-arithmetic-dock{height:var(--ma-dock-height,155px);background:var(--bc-paper);top:0}.ma-width-8 .ma-arithmetic-dock .ma-arithmetic{position:relative;margin:auto}.ma-width-8 .ma-arithmetic-dock h2,.ma-width-8 .ma-arithmetic-dock p{display:none}.ma-width-8 .ma-board{scroll-padding-top:var(--ma-dock-height,155px)}.ma-width-8 .ma-machine{scroll-margin-top:calc(var(--ma-dock-height,155px) + 10px)}}.ma-arithmetic-digit{display:inline-block;border-radius:5px;min-width:20px;line-height:20px}.ma-pair-tone-a{--ma-pair-soft:#347f80;--ma-pair-bright:#17696c;--ma-pair-halo:#287f804d}.ma-pair-tone-b{--ma-pair-soft:#b65f47;--ma-pair-bright:#a94e37;--ma-pair-halo:#ba674f4d}.ma-pair-tone-carry{--ma-pair-soft:#967117;--ma-pair-bright:#805b0b;--ma-pair-halo:#bc963e57}.ma-pair-pulse{color:#fff;background-color:var(--ma-pair-soft);animation:3s ease-in-out ma-pair-breathe;font-size:18px;font-weight:800;transform:scale(1.1)}.ma-pair-card .bc-card{position:relative}.ma-pair-card .bc-card:after{content:"";position:absolute;border:4px solid var(--ma-pair-bright);pointer-events:none;box-shadow:0 0 0 3px var(--ma-pair-halo);animation:3s ease-in-out ma-pair-halo;border-radius:12px;inset:-4px}@keyframes ma-pair-breathe{0%,to{background-color:var(--ma-pair-soft)}20%,80%{background-color:var(--ma-pair-bright)}}@keyframes ma-pair-halo{0%,to{box-shadow:0 0 0 3px var(--ma-pair-halo)}20%,80%{box-shadow:0 0 0 5px var(--ma-pair-halo),0 0 12px var(--ma-pair-halo)}}.ma-pair-replay{color:#42614d;font:inherit;cursor:pointer;background:#f8f8ef;border:1px solid #cedac6;border-radius:12px;min-height:44px;margin-bottom:8px;padding:6px 12px}@media (prefers-reduced-motion:reduce){.ma-pair-pulse{animation:none;background-color:var(--ma-pair-bright)}.ma-pair-card .bc-card:after{animation:none}}.ma-width-4{--ma-column-width:240px;--ma-card-width:56px;--ma-card-height:70px}.ma-width-4 .ma-arithmetic{width:260px}.ma-width-4 .ma-board{overflow:auto;overscroll-behavior:contain;scroll-padding:8px;border:1px solid #d8deca;border-radius:12px;width:100%;height:min(510px,60dvh);margin-top:4px}.ma-pan-hint{text-align:center;color:#5d7660;margin:8px 0 4px;font-size:13px}.ma-prediction-hint{color:#5d7660;margin:0;font-size:14px;line-height:1.5}.ma-step-calculation .ma-card:has(button:not(:disabled)){outline:3px solid #c1932f;outline-offset:4px;border-radius:10px}.ma-input>span,.ma-card-caption,.ma-output>span{font-size:14px}.ma-shared-carry>span{font-size:12px}.ma-arithmetic th:first-child,.ma-arithmetic p{font-size:13px}@media (width>=1100px){.ma-width-4 .ma-playarea{grid-template-columns:260px minmax(0,1fr)230px;max-width:1200px}}.ma-width-8.ma-step-calculation .ma-actions{position:fixed;z-index:8;background:#fffdf4;border:1px solid #d5d9c7;border-radius:16px;padding:10px;bottom:18px;right:22px;box-shadow:0 4px 18px #24374a20}@media (width<=1099px){.ma-guided .ma-main{padding-bottom:100px}.ma-guided .ma-actions{position:fixed;left:10px;right:10px;bottom:max(8px,env(safe-area-inset-bottom));z-index:8;background:#fffdf4;border:1px solid #d5d9c7;border-radius:14px;justify-content:center;gap:8px;padding:8px;box-shadow:0 4px 18px #24374a20}.ma-guided .ma-actions .ma-prediction-hint{display:none}.ma-guided .ma-arithmetic{margin-top:6px;padding:8px}.ma-guided .ma-arithmetic h2,.ma-guided .ma-arithmetic p{display:none}.ma-guided .ma-arithmetic th,.ma-guided .ma-arithmetic td{height:24px;padding:2px 0}.ma-width-4 .ma-board{height:340px}}.ma-input>span{width:calc(var(--ma-column-width)/3);margin-left:calc((var(--ma-card-width) - var(--ma-column-width)/3)/2);white-space:nowrap}.ma-app:lang(en) .ma-input>span{white-space:normal;font-size:12px;line-height:14px}.ma-app:lang(en) .ma-card-caption,.ma-app:lang(en) .ma-output>span{font-size:12px}:-webkit-any(.ma-width-2,.ma-width-4,.ma-width-8) :-webkit-any(.ma-operand-a,.ma-operand-b)>span:before{position:static;flex-shrink:0;margin-right:3px}:-moz-any(.ma-width-2,.ma-width-4,.ma-width-8) :-moz-any(.ma-operand-a,.ma-operand-b)>span:before{position:static;flex-shrink:0;margin-right:3px}:is(.ma-width-2,.ma-width-4,.ma-width-8) :is(.ma-operand-a,.ma-operand-b)>span:before{position:static;flex-shrink:0;margin-right:3px}.ma-overview-slots button:disabled{opacity:1}.ma-width-8.ma-step-calculation .ma-arithmetic-dock{top:calc(var(--ma-guide-height,62px) + 8px)}@media (width<=1099px){.ma-pair-demo .ma-input-area{display:flex;align-items: center;gap:8px}.ma-pair-demo .ma-pair-replay{flex-shrink:0;width:90px;margin:0;padding:6px;font-size:12px}.ma-width-4 .ma-board{height:370px}}@media (width<=599px){.ma-width-2 .ma-input>span{font-size:12px}}.ma-app .bc-guide>p{font-size:18px;line-height:1.6}.ma-app .ma-input>span,.ma-app:lang(en) .ma-input>span{display:block;white-space:normal;height:36px;font-size:16px;line-height:18px}.ma-app .ma-card-caption,.ma-app:lang(en) .ma-card-caption,.ma-app .ma-output>span,.ma-app:lang(en) .ma-output>span,.ma-app .ma-column-title,.ma-app .ma-machine strong,.ma-app .ma-machine small,.ma-app .ma-number,.ma-app .ma-arithmetic h2,.ma-app .ma-arithmetic th,.ma-app .ma-arithmetic td,.ma-app .ma-arithmetic th:first-child,.ma-app .ma-arithmetic th small,.ma-app .ma-arithmetic p,.ma-app .ma-prediction-hint,.ma-app .ma-help,.ma-app .ma-pan-hint{font-size:16px}.ma-app .ma-arithmetic th:first-child{line-height:18px}.ma-app .ma-shared-carry>span{font-size:16px;line-height:18px}.ma-width-4 .ma-column:not(.ma-context) .ma-input>span,.ma-width-8 .ma-column:not(.ma-context) .ma-input>span,.ma-width-4 .ma-column:not(.ma-context) .ma-card-caption,.ma-width-8 .ma-column:not(.ma-context) .ma-card-caption,.ma-width-4 .ma-column:not(.ma-context) .ma-output>span,.ma-width-8 .ma-column:not(.ma-context) .ma-output>span,.ma-width-8 .ma-column:not(.ma-context) .ma-machine small,.ma-width-8 .ma-column:not(.ma-context) .ma-local-equation{visibility:hidden}.ma-app :-webkit-any(.ma-width-4,.ma-width-8) .ma-column:not(.ma-context) .ma-input>span{visibility:hidden}.ma-app :-moz-any(.ma-width-4,.ma-width-8) .ma-column:not(.ma-context) .ma-input>span{visibility:hidden}.ma-app :is(.ma-width-4,.ma-width-8) .ma-column:not(.ma-context) .ma-input>span{visibility:hidden}.ma-number{flex-wrap:wrap}.ma-number>small{color:#9c493a;flex-basis:100%;max-width:220px;font-size:16px}.ma-predict-choices{display:flex;flex-wrap:wrap;justify-content:center;gap:8px}.ma-extension-need{text-align:center;border:2px dashed #c1932f;border-radius:12px;padding:10px}.ma-extension-need>strong{font-size:22px}.ma-extension-need>p{font-size:16px}.ma-needed-cards{display:flex;justify-content:center;gap:12px;margin-top:10px}.ma-experiments details{flex-basis:100%}.ma-experiments summary{cursor:pointer;padding:8px;font-size:16px}.ma-early:has(.ma-box-memory) .ma-machine{flex-direction:column;gap:3px;padding:0 4px}.ma-box-memory{display:flex;align-items: center;gap:4px}.ma-box-memory>span{background:#fff3c5;border:1px solid #947b34;border-radius:7px;padding:2px;font-size:16px}.ma-app :-webkit-any(.ma-operand-a,.ma-operand-b)>span:before{display:inline-block;vertical-align:middle}.ma-app :-moz-any(.ma-operand-a,.ma-operand-b)>span:before{display:inline-block;vertical-align:middle}.ma-app :is(.ma-operand-a,.ma-operand-b)>span:before{display:inline-block;vertical-align:middle}.ma-app:lang(zh) .ma-input>span{width:var(--ma-card-width);margin-left:0}.ma-app:lang(en) .ma-input>span{position:relative}.ma-app:lang(en) :-webkit-any(.ma-operand-a,.ma-operand-b)>span:before{position:absolute;top:6px;left:-9px}.ma-app:lang(en) :-moz-any(.ma-operand-a,.ma-operand-b)>span:before{position:absolute;top:6px;left:-9px}.ma-app:lang(en) :is(.ma-operand-a,.ma-operand-b)>span:before{position:absolute;top:6px;left:-9px}.ma-app.ma-width-2,.ma-app.ma-width-4,.ma-app.ma-width-8{--ma-column-width:320px}.ma-app .ma-input>span,.ma-app:lang(zh) .ma-input>span,.ma-app:lang(en) .ma-input>span{width:calc(var(--ma-column-width)/3);margin-left:calc((var(--ma-card-width) - var(--ma-column-width)/3)/2);white-space:nowrap;word-break:keep-all;overflow-wrap:normal;height:36px;line-height:36px}.ma-app:lang(en) .ma-input>span{font-size:16px}.ma-app:lang(en) :-webkit-any(.ma-operand-a,.ma-operand-b)>span:before{position:static}.ma-app:lang(en) :-moz-any(.ma-operand-a,.ma-operand-b)>span:before{position:static}.ma-app:lang(en) :is(.ma-operand-a,.ma-operand-b)>span:before{position:static}.ma-app .ma-staircase .ma-machine{width:calc(var(--ma-column-width)*5/6 - 12px)}.ma-app .ma-output>span{width:calc(var(--ma-column-width)/2 - 8px);white-space:nowrap;word-break:keep-all;overflow-wrap:normal;font-size:16px}.ma-app .ma-shared-carry>span{width:calc(var(--ma-column-width)/2 - var(--ma-card-width) - 8px);white-space:pre-line}.ma-app .ma-local-equation{display:none}.ma-app .ma-arithmetic{width:310px}.ma-app .ma-arithmetic th:first-child{white-space:nowrap;width:116px}.ma-app .ma-arithmetic th:first-child>span{display:block}.ma-app .ma-width-8 .ma-arithmetic,.ma-width-8 .ma-arithmetic{width:400px}.ma-caption-controls{display:flex;flex-shrink:0;gap:4px}.ma-caption-controls>button{display:grid;color:#42614d;cursor:pointer;background:#f4f6ec;border:1px solid #b6c6af;border-radius:10px;place-items: center;width:44px;height:44px}.ma-save-warning{position:sticky;z-index:20;display:flex;color:#78541c;background:#fff2cf;border-bottom:2px solid #d8a645;justify-content:center;align-items: center;gap:8px;padding:10px 14px;font-size:16px;top:0}.ma-save-warning>svg{flex-shrink:0}.ma-current-arithmetic{display:none}@media (width>=1100px){.ma-width-2 .ma-playarea,.ma-width-4 .ma-playarea{grid-template-columns:310px minmax(0,1fr)220px;max-width:1280px}}@media (width<=599px){.ma-main{padding:10px 10px 24px}.ma-table{padding:10px 12px}.ma-app .ma-board,.ma-width-2.ma-guided .ma-board{overflow:auto;width:100%;max-width:100%}.ma-guided .ma-main{padding-bottom:calc(var(--ma-footer-height,170px) + 20px)}.ma-guided .bc-guide{position:fixed;top:auto;left:10px;right:10px;bottom:calc(var(--ma-actions-height,54px) + 16px);z-index:9;background:#fffdf4;border:1px solid #d5d9c7;border-radius:12px;height:auto;min-height:70px;margin:0;padding:8px;box-shadow:0 4px 18px #24374a20}.ma-guided .bc-guide>img{display:none}.ma-guided .bc-guide>p{flex:1;min-width:0;margin:0;font-size:18px}.ma-guided .bc-guide .bc-help{display:none}.ma-guided .ma-actions{min-height:44px}.ma-step-calculation .ma-current-arithmetic{display:flex;white-space:nowrap;background:#fff2c6;border:1px solid #d9a83a;border-radius:9px;justify-content:space-between;align-items: center;gap:8px;width:100%;padding:8px;font-size:16px}.ma-compact-a:before{content:"●";color:#287f80;margin-right:3px}.ma-compact-b:before{content:"■";color:#b65f47;margin-right:3px}.ma-step-calculation .ma-arithmetic{display:none}.ma-step-calculation .ma-arithmetic-dock{position:static;width:100%;margin:0 0 8px;transform:none}.ma-step-calculation .ma-input-area{width:100%}.ma-step-calculation .ma-overview,.ma-step-calculation .ma-pan-hint{display:none}.ma-step-calculation :is(.ma-board,.ma-width-4 .ma-board){height:min(420px,calc(100dvh - var(--ma-footer-height,170px) - 120px))}.ma-width-8.ma-step-calculation .ma-board{height:auto}.ma-app .ma-arithmetic th:first-child{width:110px}}.ma-app .ma-staircase{margin-left:0}.ma-app .ma-column-title{width:var(--ma-column-width);text-align:left;white-space:nowrap;font-size:16px;line-height:20px;top:-18px;left:0}@media (width<=599px){.ma-width-8.ma-step-calculation .ma-arithmetic-dock{position:sticky;z-index:4;background:var(--bc-paper);height:42px;padding:0;top:0}.ma-current-arithmetic{pointer-events:auto}.ma-guided .bc-guide{display:grid;grid-template-columns:1fr 44px;gap:4px}.ma-guided .bc-guide>p{grid-column:1/-1}.ma-guided .bc-guide .ma-caption-controls{grid-column:1}.ma-guided .bc-guide .bc-help{display:grid;grid-column:2;place-items: center;width:44px;height:44px}}.ma-app .ma-number{display:grid;grid-template-columns:minmax(0,1fr)72px;gap:8px;min-width:0}.ma-app .ma-number input{width:100%;max-width:none}.ma-app .ma-number>small{grid-column:1/-1;max-width:100%}.ma-app .ma-pair-replay,.ma-app .ma-build-status{font-size:16px}@media (width<=599px){.ma-app .ma-numbers{flex-flow:wrap;gap:12px}.ma-app .ma-number{width:calc(50% - 6px)}}.ma-app .ma-column .ma-shared-carry.ma-current-incoming>span{visibility:visible}.ma-app .ma-current-incoming>span b{font-size:16px}@media (width<=599px){.ma-app .ma-current-incoming>span{left:calc(var(--ma-card-width) - var(--ma-column-width)/3 + 1px);width:calc(var(--ma-column-width)/3 - var(--ma-card-width) - 2px);white-space:normal}.ma-app .ma-current-incoming>span b{display:none}}.ma-app:lang(en) .ma-input>span{white-space:normal;word-break:keep-all;overflow-wrap:normal;height:56px;font-size:16px;line-height:24px}.ma-compact-shared-role{display:none}@media (width<=599px){.ma-app:lang(en) .ma-current-incoming>span .ma-full-shared-role{display:none}.ma-app:lang(en) .ma-current-incoming>span .ma-compact-shared-role{display:inline}}.ma-app .ma-board{padding-top:30px}.ma-app .ma-column-title{padding-left:8px;top:-26px}.ma-app .ma-column:not(.ma-hidden) :-webkit-any(.ma-operand-a,.ma-operand-b):not(.ma-hidden)>span{visibility:visible}.ma-app .ma-column:not(.ma-hidden) :-moz-any(.ma-operand-a,.ma-operand-b):not(.ma-hidden)>span{visibility:visible}.ma-app .ma-column:not(.ma-hidden) :is(.ma-operand-a,.ma-operand-b):not(.ma-hidden)>span{visibility:visible}.ma-row-incoming,.ma-row-carry-label{display:none}@media (width<=599px){.ma-app.ma-width-2,.ma-app.ma-width-4,.ma-app.ma-width-8{--ma-column-width:min(320px,calc(100vw - 70px))}.ma-app.ma-guided:-webkit-any(.ma-width-2,.ma-width-4) .ma-board{height:min(420px,calc(100dvh - var(--ma-footer-height,170px) - 120px));overflow-y:auto}.ma-app.ma-guided:-moz-any(.ma-width-2,.ma-width-4) .ma-board{height:min(420px,calc(100dvh - var(--ma-footer-height,170px) - 120px));overflow-y:auto}.ma-app.ma-guided:is(.ma-width-2,.ma-width-4) .ma-board{height:min(420px,calc(100dvh - var(--ma-footer-height,170px) - 120px));overflow-y:auto}.ma-app .ma-staircase{display:flex;flex-direction:column-reverse;align-items: center;gap:36px;width:100%!important}.ma-app .ma-staircase .ma-column{flex-shrink:0;align-self: center;margin-top:0!important}.ma-app .ma-staircase .ma-column.ma-hidden{display:none}.ma-app .ma-board{overflow-x:hidden;padding:30px 0 12px}.ma-app .ma-staircase .ma-shared-placeholder,.ma-app .ma-stair-carry-label{display:none}.ma-app .ma-row-incoming,.ma-app .ma-output>.ma-row-carry-label{display:block}.ma-app:-webkit-any(.ma-width-2,.ma-width-4,.ma-width-8) .ma-column:not(.ma-hidden) .ma-input:not(.ma-hidden)>span{visibility:visible}.ma-app:-moz-any(.ma-width-2,.ma-width-4,.ma-width-8) .ma-column:not(.ma-hidden) .ma-input:not(.ma-hidden)>span{visibility:visible}.ma-app:is(.ma-width-2,.ma-width-4,.ma-width-8) .ma-column:not(.ma-hidden) .ma-input:not(.ma-hidden)>span{visibility:visible}.ma-app:-webkit-any(.ma-width-2,.ma-width-4,.ma-width-8) .ma-column:not(.ma-hidden) .ma-input:not(.ma-hidden) .ma-card-caption{visibility:visible}.ma-app:-moz-any(.ma-width-2,.ma-width-4,.ma-width-8) .ma-column:not(.ma-hidden) .ma-input:not(.ma-hidden) .ma-card-caption{visibility:visible}.ma-app:is(.ma-width-2,.ma-width-4,.ma-width-8) .ma-column:not(.ma-hidden) .ma-input:not(.ma-hidden) .ma-card-caption{visibility:visible}.ma-app:-webkit-any(.ma-width-2,.ma-width-4,.ma-width-8) .ma-column:not(.ma-hidden) .ma-outputs:not(.ma-hidden) .ma-output>span{visibility:visible}.ma-app:-moz-any(.ma-width-2,.ma-width-4,.ma-width-8) .ma-column:not(.ma-hidden) .ma-outputs:not(.ma-hidden) .ma-output>span{visibility:visible}.ma-app:is(.ma-width-2,.ma-width-4,.ma-width-8) .ma-column:not(.ma-hidden) .ma-outputs:not(.ma-hidden) .ma-output>span{visibility:visible}.ma-app:-webkit-any(.ma-width-2,.ma-width-4,.ma-width-8) .ma-column:not(.ma-hidden) .ma-machine:not(.ma-hidden) small{visibility:visible}.ma-app:-moz-any(.ma-width-2,.ma-width-4,.ma-width-8) .ma-column:not(.ma-hidden) .ma-machine:not(.ma-hidden) small{visibility:visible}.ma-app:is(.ma-width-2,.ma-width-4,.ma-width-8) .ma-column:not(.ma-hidden) .ma-machine:not(.ma-hidden) small{visibility:visible}.ma-app .ma-shared-carry>.ma-row-carry-label{position:static;width:calc(var(--ma-column-width)/2 - 8px);white-space:nowrap;margin-top:4px}.ma-app .ma-current-incoming>.ma-row-carry-label b{display:inline}.ma-app.ma-width-8 .ma-board{height:auto}.ma-app .ma-pan-hint{display:none}.ma-app:lang(en) .ma-input>span{white-space:normal;height:56px;line-height:24px}}.calculator-shell{border:3px solid var(--ink,#1e2d49);background:#ffc62b;border-radius:30px;max-width:610px;margin:20px auto;padding:24px;box-shadow:5px 6px #1e2d49}.calculator-screen{color:#fff;background:#1e2d49;border-radius:16px;padding:18px}.calculator-operands{display:grid;grid-template-columns:1fr 1fr;gap:16px}.calculator-operands label{min-width:0}.calculator-operands span{display:block;min-height:2.6em;font-size:16px}.calculator-operands input{color:#fff;font:inherit;background:0 0;border:2px solid #8694a7;border-radius:8px;width:100%;min-width:0;padding:8px;font-size:30px}.calculator-operands .selected input{border-color:#ffc62b}.calculator-screen output{display:block;text-align:right;color:#65dea7;min-height:1.3em;font-size:56px}.calculator-keypad{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.calculator-keypad button{font:inherit;background:#fffdf5;border:2px solid #1e2d49;border-radius:10px;min-height:54px;font-size:24px;box-shadow:0 3px #1e2d49}.calculator-keypad .calculator-equals{grid-column:1/-1;color:#fff;background:#267cff}.calculator-shell .ma-result-cards{display:flex;overflow-x:auto;justify-content:flex-start;gap:8px;padding:16px 2px 8px}.calculator-shell .ma-result-cards>div{text-align:center;flex:0 0 48px}.calculator-expand{width:100%;margin:16px 0}.ma-calculator .ma-title h1{font-size:clamp(24px,4vw,36px)}.ma-calculator .ma-playarea{display:block}.ma-calculator .ma-machine-area[hidden]{display:none!important}.ma-calculator .bc-guide{position:static;margin:0}.ma-calculator .ma-main{padding-bottom:30px}.ma-calculator .ma-arithmetic{overflow-x:auto}.ma-calculator .ma-arithmetic table{min-width:460px}.ma-app.ma-calculator .ma-arithmetic th:first-child{width:140px}@media (width<=600px){.calculator-shell{margin:12px 0;padding:16px}.ma-calculator .ma-title{align-items: start}}
