:root{color:#16211d;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;background:#eef4f1;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:16px;line-height:1.5}*{box-sizing:border-box}body{background-color:#0000;background-image:linear-gradient(#ffffffd1,#eef4f1f0),url(/memory-bg.svg);background-position:0 0,0 0;background-repeat:repeat,repeat;background-size:cover;background-attachment:scroll,scroll;background-origin:padding-box,padding-box;background-clip:border-box,border-box;min-width:320px;min-height:100vh;margin:0}button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed}#app{min-height:100vh}.app-shell{align-content:center;gap:16px;width:min(100%,920px);min-height:100vh;margin:0 auto;padding:48px 20px;display:grid}.start-screen,.game-screen,.ranking-screen{width:100%}.title-area,.game-header,.ranking-header{justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:24px;display:flex}.eyebrow{color:#5a6a63;text-transform:uppercase;margin:0 0 4px;font-size:.82rem;font-weight:700}h1{margin:0;font-size:clamp(2.2rem,8vw,5.2rem);line-height:.95}.start-form{gap:12px;max-width:460px;display:grid}label{color:#42524b;font-weight:700}input{color:#16211d;background:#ffffffe0;border:1px solid #b9c7c1;border-radius:8px;width:100%;height:48px;padding:0 14px}.actions{flex-wrap:wrap;gap:10px;margin-top:8px;display:flex}.primary,.secondary{border:1px solid #0000;border-radius:8px;min-height:44px;padding:0 18px;font-weight:800}.primary{color:#fff;background:#1d6f5b}.secondary{color:#17342c;background:#fff;border-color:#b9c7c1}.compact{min-height:38px;padding:0 12px}.stats{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-bottom:16px;display:grid}.stats div{background:#ffffffc7;border:1px solid #c6d2cd;border-radius:8px;min-height:72px;padding:12px}.stats span{color:#617069;font-size:.8rem;font-weight:700;display:block}.stats strong{margin-top:4px;font-size:1.45rem;display:block}.board{grid-template-columns:repeat(4,minmax(56px,1fr));gap:10px;width:min(100%,560px);display:grid}.card{aspect-ratio:1;color:#fff;background:#28564b;border:1px solid #9eb0a8;border-radius:8px;font-size:clamp(1.4rem,7vw,2.8rem);font-weight:900;transition:transform .14s,background-color .14s}.card.open{color:#15342b;background:#fff;transform:translateY(-2px)}.card.matched{color:#0f382e;background:#b9ead4;border-color:#72b894}.ranking-table{background:#ffffffdb;border:1px solid #c6d2cd;border-radius:8px;width:100%;overflow:hidden}.ranking-row{border-top:1px solid #dbe4e0;grid-template-columns:70px minmax(120px,1fr) 90px 90px;align-items:center;gap:8px;padding:12px 14px;display:grid}.ranking-row:first-child{border-top:0}.ranking-row.heading{color:#52645c;background:#f4f8f6;font-size:.82rem;font-weight:800}.empty-ranking{color:#5d6d66;padding:28px 14px}.field-error,.status-error,.global-error{color:#a13a32;margin:0;font-weight:700}.status-info,.global-status{color:#315f53;margin:0;font-weight:800}@media (width<=620px){.app-shell{align-content:start;padding:28px 14px}.title-area,.game-header,.ranking-header{flex-direction:column;align-items:flex-start}.stats{grid-template-columns:repeat(3,1fr)}.stats strong{font-size:1.1rem}.board{gap:8px}.ranking-row{grid-template-columns:48px minmax(90px,1fr) 58px 70px;padding:10px;font-size:.88rem}}