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@media(max-width:1220px){.intro,.planner,.examples,.explanation,.guide-section{margin-left:28px;margin-right:28px}.example{flex-direction:column;align-items:start}.intro{padding:0}}@media(max-width:760px){.site-header{padding:18px 20px}.site-header nav{gap:15px;font-size:12px}.site-header nav a:first-child{display:none}.brand b{font-size:19px}.brand-grid{font-size:35px}.intro{margin-top:35px}.intro>p:not(.eyebrow){font-size:16px}.intro-facts{gap:8px 15px;font-size:12px}.planner-heading{align-items:start;padding:20px}.planner-heading h2{font-size:17px;max-width:240px}.workbench{grid-template-columns:1fr}.board-panel{border-right:0;border-bottom:1px solid var(--line)}.board-panel,.pieces-panel{padding:22px 20px}.board{max-width:400px}.board button,.board .cell{font-size:11px}.pieces-panel .slots{max-width:430px}.presets{grid-template-columns:repeat(9,minmax(0,1fr))}.preset .shape{grid-template-columns:repeat(5,4px);grid-template-rows:repeat(5,4px)}.action-bar{padding:20px}.action-bar .primary{flex:1 0 100%}.tool-limit{padding:18px 20px}.examples,.explanation,.guide-section{margin-top:48px;margin-bottom:48px}.section-heading{display:block}.section-heading>p{margin:12px 0 0;max-width:none}.example-grid{grid-template-columns:1fr}.example{flex-direction:row;align-items:center}.example .mini-board{width:85px}.example h3{font-size:17px}.explanation{grid-template-columns:1fr;gap:18px;padding-top:32px}.explanation h2 br{display:none}.results{grid-template-columns:1fr;padding:22px 20px;gap:22px}.results .board{max-width:360px}.move-detail{min-height:0}.article{margin:35px 20px 0;padding:0}.article p{font-size:16px}.practice-figure{padding:17px;gap:17px;margin:25px 0}.practice-figure .mini-board{width:120px}.practice-figure .button{padding:9px;font-size:12px}.practice-figure figcaption{font-size:12px}.guide-list h3{font-size:18px}footer{display:block;margin-top:48px;padding:25px 24px}footer nav{justify-content:start;max-width:none}.intro,.planner,.examples,.explanation,.guide-section{margin-left:20px;margin-right:20px}}@media(max-width:390px){.intro,.planner,.examples,.explanation,.guide-section{margin-left:12px;margin-right:12px}.board-panel,.pieces-panel{padding:20px 14px}.planner-heading{padding:18px 14px}.planner-heading>a{font-size:11px}.planner-heading h2{font-size:15px}.presets{grid-template-columns:repeat(7,minmax(0,1fr))}.practice-figure{display:block}.practice-figure .mini-board{margin-bottom:16px;width:150px}.site-header{padding:15px 13px}.site-header nav{gap:12px}.board{gap:3px;padding:23px 7px 7px 23px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}

.board [data-row-label]::before{content:attr(data-row-label);position:absolute;right:calc(100% + 9px);top:50%;transform:translateY(-50%);font-size:10px;color:#d8d3ed;font-weight:400;line-height:1}.board [data-col-label]::after{content:attr(data-col-label);position:absolute;bottom:calc(100% + 8px);left:50%;transform:translateX(-50%);font-size:10px;color:#d8d3ed;font-weight:400;line-height:1}