*{box-sizing:border-box}[hidden]{display:none!important}.post-page{max-width:1160px;margin:24px auto;padding:0 16px;color:#193650}.post-page>h1{text-align:center;font-size:29px;margin:12px 0}.post-page>.kids-seo-lead{text-align:center;margin:0 0 18px}.post-office{position:relative;isolation:isolate;container-type:size;width:100%;aspect-ratio:16/9;min-height:500px;overflow:hidden;border-radius:22px;background:#d7c6ad url('./assets/post-office.webp') center/cover;box-shadow:0 12px 30px #49372330;color:#193650;font-family:'Zen Maru Gothic',sans-serif}.post-office button{font:inherit;font-weight:900;color:#193650;border:0;cursor:pointer;touch-action:manipulation}.post-office button:focus-visible,.post-office input:focus-visible{outline:4px solid #1c7199;outline-offset:3px}.post-office button[aria-disabled=true]{cursor:default}.post-office button:disabled{opacity:.45;cursor:default}.post-base{height:100%;display:grid;grid-template-rows:48px minmax(0,1fr)}.post-top{display:flex;justify-content:center;align-items:center;gap:8px;padding:5px 10px;background:#eddfc696}.post-top button{background:#fff9ebed;border-radius:8px;padding:8px 19px;box-shadow:0 2px 3px #4c3b2630;font-size:12px;white-space:nowrap}.post-cover{display:grid;place-items:center;padding:18px 8%}.mail-invitation{width:min(790px,94%);height:100%;background:url('./assets/postcard.webp') center/100% 100% no-repeat;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:3cqh 5cqw;text-align:center;gap:10px}.mail-invitation h2{font-size:clamp(28px,3.5cqw,44px);line-height:1.4;margin:0}.mail-invitation h2 span{color:#32747a}.mail-invitation>p{font-size:16px;font-weight:900;margin:0}.cover-example{display:flex;align-items:center;justify-content:center;gap:12px;width:100%;margin:3px 0}.cover-example img{height:20cqh;width:30%;object-fit:contain}.cover-example>span,.help-stamps>span{background:url('./assets/stamp-0.webp') center/100% 100% no-repeat;width:clamp(60px,9cqw,105px);aspect-ratio:1;display:grid;place-items:center;font-weight:900;font-size:clamp(32px,5.4cqw,62px);line-height:1.4}.cover-example>span:last-child{background-image:url('./assets/stamp-1.webp')}.cover-modes,.play-modes{display:flex;justify-content:center;gap:8px}.cover-modes button,.play-modes button{background:#fff7e6;border:2px solid #a8937238;border-radius:9px;padding:8px 23px;font-size:18px}.cover-modes button[aria-pressed=true],.play-modes button[aria-pressed=true]{background:#337983;color:white;border-color:#256670}.coral-button{background:url('./assets/coral.webp') center/100% 100% no-repeat;padding:13px 30px;min-height:48px;font-size:19px!important}.post-play{min-height:0;display:grid;grid-template-columns:39% minmax(0,1fr);grid-template-rows:48px minmax(0,1fr);gap:12px 18px;padding:8px 4% 3%}.post-stats{display:flex;align-items:center;justify-content:center;gap:6px}.post-stats>span{background:#fff8e8e8;border-radius:6px;padding:4px 8px;font-size:11px;white-space:nowrap}.post-stats b{font-size:24px;margin-left:4px}.play-modes{align-items:center}.play-modes button{font-size:15px;padding:7px 25px}.picture-postcard{min-height:0;display:grid;grid-template-rows:30px minmax(0,1fr) 30px;justify-items:center;background:url('./assets/postcard.webp') center/100% 100% no-repeat;padding:20px 25px 24px;gap:8px}.picture-postcard h2{font-size:20px;margin:0;line-height:1.5;white-space:nowrap}.picture-postcard>img{width:100%;height:100%;min-height:0;object-fit:contain}.picture-postcard>p{align-self:center;font-size:14px;font-weight:900;text-align:center;margin:0}.letter-workshop{min-height:0;display:grid;grid-template-rows:minmax(0,1fr) 46px 54px;gap:8px}.letter-board{position:relative;min-height:0;min-width:0}.answer-tray{position:absolute;background:url('./assets/tray.webp') center/100% 100% no-repeat;pointer-events:none}.slot,.origin{position:absolute;pointer-events:none;border-radius:8px}.slot{border:2px dashed #72644c88;background:#fff8e72b}.origin{opacity:.2;background-position:center;background-size:100% 100%;background-repeat:no-repeat}.letter-tile{position:absolute;left:0;top:0;min-width:0;min-height:0;padding:0;display:grid;place-items:center;line-height:1.4;background:center/100% 100% no-repeat;transition:transform .18s ease-in-out;transform-origin:center;filter:drop-shadow(0 3px 2px #674b2a26);z-index:2}.letter-tile[data-placed=true]{z-index:3}.post-tools{display:flex;align-items:center;justify-content:center;gap:7px;min-width:0}.post-tools button{font-size:12px;background:#fff8e9;border-radius:8px;padding:9px 11px;box-shadow:0 2px 3px #4c3b2630;white-space:nowrap}.post-tools #erase{background:#b4d6d9}.post-tools #hint{background:#f2c2ac}.post-feedback{margin:0;align-self:center;text-align:center;display:grid;place-items:center;background:#fff9ecee;border-radius:9px;min-height:40px;padding:5px 9px;line-height:1.5;font-size:14px;font-weight:900}.post-office[data-status=correct] .post-feedback{color:#236141}.post-office[data-status=wrong] .post-feedback{color:#874f32}.post-dialog{position:absolute;inset:0;z-index:10;display:grid;place-items:center;background:#18374465;backdrop-filter:blur(4px);padding:3%}.mail-folder{width:min(980px,96%);max-height:100%;background:#fff8e8 url('./assets/folder.webp') center/100% 100% no-repeat;border-radius:18px;box-shadow:0 10px 40px #162d3b55;text-align:center;padding:4% 5%}.mail-folder>h2{font-size:28px;line-height:1.5;margin:0 0 16px}.mail-folder p{font-size:16px;line-height:1.7;margin:12px 0}.mail-folder button{background:#e8d3ae;border-radius:9px;padding:10px 24px;margin:5px;min-height:38px;font-size:15px}.mail-folder>button{background:#efb2a2;margin-top:14px}.mail-help{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.mail-help>section{background:#fffaf28c;border-radius:10px;padding:12px 8px;min-width:0}.mail-help>section>b{display:inline-grid;place-items:center;background:#367a81;color:white;border-radius:6px;line-height:1.4;width:32px;font-size:22px}.mail-help h3{font-size:17px;line-height:1.6;margin:6px 0 12px}.mail-help img{width:100%;height:135px;object-fit:contain}.help-stamps{display:flex;justify-content:center;gap:5px;margin:20px 0}.help-stamps>span{width:72px;font-size:44px}.help-stamps>span:last-child{background-image:url('./assets/stamp-1.webp')}.mail-help>section>p{font-size:13px;line-height:1.8}.mail-help .help-footer{grid-column:1/-1;font-size:14px;line-height:1.6;margin:0}.help-footer small{font-size:10px}.sound-switches{display:flex;justify-content:center;flex-wrap:wrap}.sound-switches button[aria-pressed=true]{background:#b9d9d4}.mail-folder label{display:block;margin:20px 0 8px;font-weight:900}.mail-folder input{width:min(300px,85%);accent-color:#337983;min-height:30px}.parent-note{max-width:960px;margin:28px auto;font-size:15px;line-height:1.9}.parent-note h2{font-size:21px}.post-office:fullscreen{width:100%;height:100dvh;border-radius:0;aspect-ratio:auto;min-height:0;max-width:none}.post-office:fullscreen .post-base{grid-template-rows:58px minmax(0,1fr)}.post-office:fullscreen .post-top button{font-size:15px;padding:10px 23px}.post-office:fullscreen .post-play{padding:16px 6% 4%;grid-template-rows:62px minmax(0,1fr);gap:20px 28px}.post-office:fullscreen .post-stats>span{font-size:16px;padding:8px 16px}.post-office:fullscreen .post-stats b{font-size:30px}.post-office:fullscreen .play-modes button{font-size:20px;padding:10px 36px}.post-office:fullscreen .picture-postcard{padding:32px 40px;grid-template-rows:40px minmax(0,1fr) 40px}.post-office:fullscreen .picture-postcard h2{font-size:27px}.post-office:fullscreen .picture-postcard>p{font-size:20px}.post-office:fullscreen .letter-workshop{grid-template-rows:minmax(0,1fr) 60px 66px;gap:16px}.post-office:fullscreen .post-tools button{font-size:18px;padding:12px 20px}.post-office:fullscreen .post-feedback{font-size:20px;min-height:48px}
@media(max-width:680px) and (orientation:portrait){.post-page{padding:0 6px}.post-office{height:min(820px,calc(100dvh - 12px));min-height:710px;aspect-ratio:auto;border-radius:16px}.post-base,.post-office:fullscreen .post-base{grid-template-rows:74px minmax(0,1fr)}.post-top{display:grid;grid-template-columns:repeat(3,1fr);padding:6px;gap:5px}.post-top button,.post-office:fullscreen .post-top button{font-size:11px;padding:6px 3px}.post-top button:last-child{grid-column:2/4}.post-cover{padding:20px 10px}.mail-invitation{width:100%;height:90%;padding:24px 18px;gap:20px}.mail-invitation h2{font-size:29px}.mail-invitation>p{font-size:14px}.cover-example{display:grid;grid-template-columns:1fr 1fr;gap:10px;width:80%}.cover-example img{grid-column:1/3;width:100%;height:180px}.cover-example>span{width:86px;justify-self:center;font-size:51px}.cover-modes{gap:6px}.cover-modes button{font-size:16px;padding:8px 16px}.coral-button{font-size:16px!important;padding:12px 25px}.post-play,.post-office:fullscreen .post-play{grid-template-columns:minmax(0,1fr);grid-template-rows:34px 38px minmax(170px,.8fr) minmax(250px,1fr);gap:6px;padding:5px 12px 12px}.post-stats,.post-office:fullscreen .post-stats{gap:5px}.post-stats>span,.post-office:fullscreen .post-stats>span{font-size:10px;padding:3px 12px}.post-stats b,.post-office:fullscreen .post-stats b{font-size:21px}.play-modes{gap:8px}.play-modes button,.post-office:fullscreen .play-modes button{font-size:13px;padding:6px 24px}.picture-postcard,.post-office:fullscreen .picture-postcard{grid-template-rows:24px minmax(0,1fr) 22px;padding:14px 25px;gap:3px}.picture-postcard h2,.post-office:fullscreen .picture-postcard h2{font-size:17px}.picture-postcard>p,.post-office:fullscreen .picture-postcard>p{font-size:12px}.letter-workshop,.post-office:fullscreen .letter-workshop{grid-template-rows:minmax(0,1fr) 36px 47px;gap:4px}.post-tools{gap:5px}.post-tools button,.post-office:fullscreen .post-tools button{font-size:10px;padding:8px 9px}.post-feedback,.post-office:fullscreen .post-feedback{font-size:12px;padding:4px 6px;min-height:35px}.post-dialog{padding:8px}.mail-folder{padding:24px 15px;width:100%;max-width:100%}.mail-folder>h2{font-size:24px;margin-bottom:8px}.mail-folder p{font-size:13px;line-height:1.6}.mail-folder button{font-size:13px;padding:8px 14px;margin:4px}.mail-help{grid-template-columns:1fr;gap:7px}.mail-help>section{display:grid;grid-template-columns:26px minmax(0,1fr) 100px;align-items:center;padding:6px;gap:5px}.mail-help>section>b{font-size:17px;width:25px}.mail-help h3{font-size:12px;line-height:1.7;margin:0}.mail-help img{height:100px}.help-stamps{margin:3px 0}.help-stamps>span{width:45px;font-size:27px}.mail-help>section>p{font-size:11px;margin:2px 0;grid-column:2/4}.mail-help>section:nth-child(3)>p{grid-column:2/4}.mail-help .help-footer{font-size:12px}.help-footer small{font-size:9px}.mail-folder label{font-size:13px}}
@media(max-height:500px) and (orientation:landscape){.post-office{min-height:360px}.post-base,.post-office:fullscreen .post-base{grid-template-rows:36px minmax(0,1fr)}.post-top{gap:5px;padding:4px}.post-top button,.post-office:fullscreen .post-top button{font-size:11px;padding:5px 13px}.post-cover{padding:8px 12%}.mail-invitation{padding:12px 35px;gap:5px;width:100%}.mail-invitation h2{font-size:25px;line-height:1.3}.mail-invitation>p{font-size:12px}.cover-example{gap:14px;margin:0}.cover-example img{height:80px;width:25%}.cover-example>span{width:65px;font-size:38px}.cover-modes button{padding:5px 22px;font-size:14px}.coral-button{min-height:33px;font-size:14px!important;padding:7px 25px}.post-play,.post-office:fullscreen .post-play{grid-template-columns:37% minmax(0,1fr);grid-template-rows:35px minmax(0,1fr);padding:3px 4% 10px;gap:6px 12px}.post-stats,.post-office:fullscreen .post-stats{gap:4px}.post-stats>span,.post-office:fullscreen .post-stats>span{font-size:9px;padding:3px 8px}.post-stats b,.post-office:fullscreen .post-stats b{font-size:18px;margin-left:3px}.play-modes button,.post-office:fullscreen .play-modes button{font-size:13px;padding:5px 25px}.picture-postcard,.post-office:fullscreen .picture-postcard{grid-template-rows:24px minmax(0,1fr) 18px;padding:13px 18px;gap:3px}.picture-postcard h2,.post-office:fullscreen .picture-postcard h2{font-size:16px}.picture-postcard>p,.post-office:fullscreen .picture-postcard>p{font-size:11px}.letter-workshop,.post-office:fullscreen .letter-workshop{grid-template-rows:minmax(0,1fr) 32px 32px;gap:4px}.post-tools button,.post-office:fullscreen .post-tools button{font-size:10px;padding:7px 14px}.post-feedback,.post-office:fullscreen .post-feedback{font-size:11px;min-height:28px;padding:4px 8px}.post-dialog{padding:6px}.mail-folder{padding:12px 25px;width:94%}.mail-folder>h2{font-size:22px;margin:0 0 5px}.mail-folder button{font-size:12px;min-height:27px;padding:5px 20px;margin:3px}.mail-folder p{font-size:12px;margin:6px 0;line-height:1.5}.mail-help{gap:8px}.mail-help>section{padding:5px}.mail-help>section>b{font-size:15px;width:23px}.mail-help h3{font-size:12px;line-height:1.5;margin:3px 0}.mail-help img{height:75px}.help-stamps{margin:6px 0}.help-stamps>span{width:48px;font-size:28px}.mail-help>section>p{font-size:10px;line-height:1.5;margin:4px 0}.mail-help .help-footer{font-size:11px}.help-footer small{font-size:8px}.mail-folder label{margin:8px 0;font-size:13px}}
@media(prefers-reduced-motion:reduce){.letter-tile{transition-duration:0s}}