.pentadoku{max-width:1160px;margin:auto;color:#162b35}.pd-head{padding:1.6rem 1rem}.pd-head h1{font-family:Georgia,serif;font-size:clamp(2rem,5vw,3rem)}.pd-eyebrow{color:#a85030;font-weight:700;text-transform:uppercase;letter-spacing:.08em}.pd-modes,.pd-actions,.pd-navigation,.pd-keypad{display:flex;flex-wrap:wrap;gap:.55rem;margin:1rem 0}.pentadoku button,.pentadoku select{border:1px solid #b7c8ca;border-radius:.65rem;background:#fff;color:#15333b;padding:.58rem .85rem}.pentadoku button:hover{background:#eaf4f3}.pentadoku button:focus-visible,.pentadoku select:focus-visible{outline:3px solid #ba642e;outline-offset:2px}.pd-modes button[aria-pressed=true],.pd-actions button:first-child{background:#12575b;color:#fff}.pd-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:1.5rem;padding:0 1rem 2rem}.pd-main,.pd-side{background:#fffaf0;border:1px solid #dddbcc;border-radius:1rem;padding:1rem}.pd-side{align-self:start}.pd-toolbar{display:flex;gap:1rem;align-items:center;justify-content:space-between}.pd-toolbar label{font-weight:700}.pd-board{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));width:min(100%,440px);aspect-ratio:1;margin:1rem auto;border:3px solid #16343a}.pentadoku .pd-cell{position:relative;min-width:0;min-height:0;border:1px solid #b8c3bd;border-radius:0;padding:0;font-size:clamp(1.2rem,4vw,2rem);font-weight:700;line-height:1;background:#f5f4e9}.pentadoku .pd-cell[data-region="0"]{background:#e8f2ef}.pentadoku .pd-cell[data-region="1"]{background:#f4e5d5}.pentadoku .pd-cell[data-region="2"]{background:#e8e8f4}.pentadoku .pd-cell[data-region="3"]{background:#f4edcf}.pentadoku .pd-cell[data-region="4"]{background:#e8eddd}.pentadoku .pd-cell[data-given="true"]{color:#104d51;font-weight:900}.pentadoku .pd-cell[data-selected="true"]{box-shadow:inset 0 0 0 4px #c05e2e;z-index:2}.pentadoku .pd-cell[data-right="true"]{border-right:3px solid #16343a}.pentadoku .pd-cell[data-bottom="true"]{border-bottom:3px solid #16343a}.pd-keypad{justify-content:center}.pd-keypad button{min-width:2.7rem;font-weight:700}.pd-status{min-height:2rem;padding:.6rem;border-radius:.6rem;background:#e8f2ef}.pd-status[data-kind="error"]{background:#fae5df;color:#8c2e16}.pd-status[data-kind="success"]{background:#def2e7;color:#175b37}.pd-builder{display:flex;gap:.8rem;align-items:center}.pd-builder[hidden]{display:none}.pd-instructions{min-height:3rem}@media(max-width:760px){.pd-layout{grid-template-columns:1fr}.pd-side{order:-1}.pd-board{width:min(100%,380px)}}