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*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:system-ui,-apple-system,"Segoe UI",sans-serif;font-size:16px;line-height:1.5}button,select{font:inherit}button{cursor:pointer}button:disabled{cursor:default}button:focus-visible,select:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid #b06808;outline-offset:4px}.app{max-width:1180px;margin:auto;padding:32px 32px 20px}.header{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:26px}.eyebrow{font-size:.75rem;letter-spacing:.14em;font-weight:750;margin:0 0 5px;color:var(--muted)}h1{font-size:clamp(1.9rem,4vw,2.8rem);letter-spacing:-.045em;line-height:1.15;margin:0;font-weight:800}.title-dot{color:#b57800}h2{font-size:1.1rem;margin:0}.button{border:1px solid var(--line);border-radius:9px;padding:10px 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#103d37;scrollbar-width:thin}.chain{display:flex;align-items:center;gap:0;width:max-content;min-width:100%;justify-content:center}.tile{display:inline-flex;position:relative;align-items:stretch;border:1px solid #d7d8cb;border-radius:9px;background:#fffef8;color:#173e38;min-height:76px;box-shadow:0 4px 0 #c6ccb9;overflow:hidden;flex-shrink:0}.tile-half{display:flex;align-items:center;justify-content:center;white-space:nowrap;padding:14px 12px;min-width:70px;font-size:1rem;font-weight:650;font-variant-numeric:tabular-nums}.equation{flex:1;border-right:1px solid #d6d9cd}.value{background:#f1f0e5}.join{color:#99c6b7;font-size:1rem;padding:0 7px}.scroll-note{margin:0;text-align:center;color:#b8d1c7;font-size:.75rem}.message{margin:16px 0 23px;padding:13px 17px;border-left:3px solid #78978a;background:#e7ede5;border-radius:0 8px 8px 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.value{background:var(--yellow)}.rules{border-top:1px solid var(--line);margin-top:29px;padding-top:16px;color:var(--muted);font-size:.875rem}.rules summary{cursor:pointer;color:var(--ink);font-weight:650;min-height:36px}.rules p{max-width:850px}.rules strong{color:var(--ink)}footer{font-family:Georgia,serif;font-style:italic;color:var(--muted);text-align:center;font-size:.875rem;margin-top:25px}.completed{grid-column:1/-1;text-align:center;padding:20px;border:1px dashed #83a68e;border-radius:9px;color:var(--green)}
@media(min-width:1050px){.hand{grid-template-columns:repeat(4,minmax(0,1fr))}.hand .tile-half{font-size:1.08rem}}
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@media(max-width:560px){.app{padding:20px 12px}.header{align-items:flex-start;gap:12px;margin-bottom:20px;flex-wrap:wrap}.header .button{font-size:.875rem;padding:8px 12px}.eyebrow{font-size:.75rem;letter-spacing:.07em}.toolbar{display:grid;grid-template-columns:1fr auto;gap:12px}.level{grid-column:1/-1;justify-content:space-between}.level select{flex:1;margin-left:5px}.progress-group{margin-left:0;min-width:0;font-size:.8125rem}.hint{font-size:.875rem;padding:9px 12px}.hint span{margin-left:5px}.table{padding:17px 12px 13px;border-radius:12px}.table-heading span{font-size:.6875rem;letter-spacing:.05em}.ends{gap:10px}.end{padding:10px 8px;min-height:90px}.end span{font-size:.8125rem}.end strong{font-size:1rem}.hand{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 10px}.hand .tile-half{font-size:.875rem;padding:12px 6px;min-width:52px}.hand .tile{min-height:77px}.hand-heading p span{display:block}.message{margin-bottom:19px}.chain{justify-content:flex-start}.chain .tile-half{font-size:1rem}.table-instruction{margin-bottom:14px}.scroll-note{font-size:.75rem}}
@media(max-width:560px){.hand .equation{white-space:normal;min-width:0;text-align:center}.hand .value{min-width:58px;flex-shrink:0}}
@media(max-width:350px){.hand{grid-template-columns:1fr}.hand .tile-half{font-size:1rem}}
.hand .tile{touch-action:none;cursor:grab;user-select:none;-webkit-user-select:none}.hand-heading p{max-width:560px}.hand-heading p span{display:block}.dragging,.dragging *{cursor:grabbing!important;user-select:none!important}.hand .tile.drag-source{opacity:.25;transform:none;box-shadow:none}.drag-ghost{position:fixed;z-index:1000;pointer-events:none;padding:0;opacity:.95;transform:rotate(-3deg) scale(1.04);box-shadow:0 12px 28px #0005;outline:2px solid #f8d86b}.drag-ghost .equation{min-width:0;white-space:normal;text-align:center}.drag-ghost .value{flex-shrink:0}.dragging [data-drop-side]{outline:2px dashed var(--yellow);outline-offset:3px}.dragging .end{opacity:1}.dragging .drop-hover{background:var(--yellow)!important;color:#173e38!important;outline:3px solid white;outline-offset:3px;box-shadow:0 0 0 7px #f8d86b44}.dragging .drop-hover span{color:#173e38}.dragging .chain [data-drop-side]{outline-offset:-4px}.dragging .ends{transition:none}
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.header-actions{display:flex;gap:8px;flex-wrap:wrap}.drag-ghost{transform-origin:top left}.spark{position:fixed;z-index:1001;width:7px;height:7px;border-radius:2px;background:#e9b633;pointer-events:none}.spark:nth-of-type(2n){background:#58ba90}.end{transition:background .13s,box-shadow .13s}.dragging .drop-hover{box-shadow:0 0 0 7px #f8d86b44,0 0 24px #f8d86b33}.message.success{box-shadow:inset 0 0 0 1px #35733d15}.completed{background:#e1eddb;font-weight:650}.header-actions .button{font-size:.875rem}
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