.activity-dialog.postcards-dialog {box-sizing:border-box;width:min(960px,calc(100vw - 1rem));max-width:calc(100vw - 1rem);max-height:calc(100dvh - 1rem);overflow-y:auto;padding:clamp(.75rem,3vw,1.8rem);overscroll-behavior:contain;}
.postcards-dialog .activity-preview {padding:0;border:0;background:none;text-align:left;}
.postcards-game {padding:clamp(.6rem,2vw,1rem);border:1px solid #baa88c;border-radius:1rem;background:repeating-linear-gradient(90deg,#e4d3b7 0,#eddfc5 55px,#d7c4a6 57px,#e7d8be 60px);color:#173b4d;overflow-wrap:anywhere;}
.postcards-progress {display:flex;flex-wrap:wrap;justify-content:space-between;gap:.5rem 1rem;font-size:.9rem;font-weight:700;margin-bottom:1rem;}
.postcards-paper {border:8px solid transparent;border-image:repeating-linear-gradient(135deg,#9f4940 0 12px,#fffaf0 12px 24px,#315a71 24px 36px,#fffaf0 36px 48px) 8;padding:clamp(.6rem,2vw,1.3rem);background:#fffaf0;box-shadow:0 5px 15px #51391f30;}
.postcards-heading {display:flex;justify-content:space-between;align-items:flex-start;gap:.75rem;border-bottom:1px solid #bfae92;padding-bottom:.75rem;}
.postcards-heading h3 {font:700 clamp(1.1rem,3vw,1.5rem)/1.4 Georgia,serif;margin:.3rem 0;}
.postcards-heading p {margin:.3rem 0;line-height:1.5;}
.postcards-heading .eyebrow {color:#7b4e2f;font-size:.7rem;}
.postcards-postage {flex:0 0 4.5rem;padding:.4rem;text-align:center;border:3px dotted #957e55;outline:2px solid #c8b48e;background:#e7eede;color:#173b4d;}
.postcards-postage span {font-size:.65rem;text-transform:uppercase;}.postcards-postage strong {display:block;font:700 .9rem/1.4 Georgia,serif;}
.postcards-paper h4 {font-size:1.1rem;margin:1rem 0 .25rem;line-height:1.5;}
.postcards-paper > p {margin:.25rem 0 1rem;line-height:1.5;}
.postcards-choices {display:grid;gap:.65rem;}
.postcards-choice {display:grid;grid-template-columns:1.8rem minmax(0,1fr);align-items:start;gap:.6rem;box-sizing:border-box;width:100%;padding:.8rem .65rem;text-align:left;border:2px solid #c5bba7;border-radius:.35rem;background:#fffcf5;color:#173b4d;font:500 clamp(1.05rem,2vw,1.2rem)/1.6 Georgia,serif;}
.postcards-letter {display:grid;place-items:center;min-height:1.8rem;background:#e6edeb;border-radius:.3rem;font:800 .95rem/1.5 Arial,sans-serif;}
.postcards-choice small {grid-column:2;font:700 .8rem/1.5 Arial,sans-serif;}.postcards-choice small:empty {display:none;}
.postcards-choice.is-selected {border-color:#12627c;background:#eaf2f5;}.postcards-choice.is-selected > span:nth-child(2) {text-decoration:underline;text-decoration-color:#12627c;text-underline-offset:.25rem;}
.postcards-choice.is-tried {background:#eee7dc;border-style:dashed;color:#655a54;opacity:1;}.postcards-choice.is-correct {background:#e1f1e6;border-color:#397853;opacity:1;}
.postcards-game mark {background:#ffe29b;color:#173b4d;}
.postcards-paper-footer {display:flex;justify-content:space-between;align-items:center;gap:.5rem;margin-top:1rem;font-weight:700;font-size:.85rem;}
.postcards-postmark {display:grid;place-items:center;text-align:center;flex:0 0 4.4rem;height:4.4rem;border:3px double #a3473b;border-radius:50%;color:#8d392f;text-transform:uppercase;transform:rotate(-9deg);opacity:0;font-size:.65rem;}
.postcards-postmark.is-visible {opacity:1;}
.postcards-seals {display:flex;justify-content:center;gap:.9rem;padding:1rem;}.postcards-seals i {width:1.25rem;height:1.25rem;border:3px double #e7b4a4;border-radius:50%;background:#a3473b;box-shadow:0 2px 3px #51391f30;}.postcards-seals .is-used {opacity:.3;}
.postcards-rule {margin:1rem 0;padding:1rem;border:1px solid #bba06f;border-left:4px solid #a18043;border-radius:.4rem;background:#fff9e8;line-height:1.55;}
.postcards-rule .eyebrow {color:#725326;}.postcards-rule h4 {margin:.2rem 0;font-size:1.2rem;}
.postcards-clean-sentence {padding:.7rem;background:#fffdf6;border:1px solid #d3c39c;font:600 1.05rem/1.65 Georgia,serif;}
.postcards-rule summary {cursor:pointer;display:list-item;padding:.6rem .2rem;box-sizing:border-box;font-weight:700;}
.postcards-controls {display:grid;grid-template-columns:1fr;gap:.6rem;}.postcards-controls [data-postcards-next] {grid-column:1/-1;}
.postcards-game :is(button,summary) {min-height:44px;min-width:44px;touch-action:manipulation;white-space:normal;}
.postcards-game :is(button,summary):focus-visible {outline:3px solid #12627c;outline-offset:3px;}
.postcards-result h3 {font-size:1.4rem;}
@media(min-width:500px){.postcards-controls {grid-template-columns:1fr 1fr;}}
@media(prefers-reduced-motion:reduce){.postcards-game * {animation:none!important;transition:none!important;}}