*{box-sizing:border-box}body{margin:0;min-height:100dvh;display:grid;place-items:center;padding:20px;background:#e6f0f5;font-family:'Segoe UI','Malgun Gothic',sans-serif;color:#173b53}main{width:100%;max-width:1100px;overflow:hidden;border-radius:16px;box-shadow:0 22px 70px #22466025;background:#fff}header{height:58px;padding:0 20px;display:flex;align-items:center;gap:22px}header a{text-decoration:none;color:#45697e;font-size:12px}header strong{font-size:18px;letter-spacing:1px}header small{font-size:11px;font-weight:400;letter-spacing:0;margin-left:10px}button{font:inherit;cursor:pointer;border:0}header button{margin-left:auto;background:#edf4f7;color:#48697d;border-radius:8px;padding:9px 13px;font-size:12px}#arena{position:relative;aspect-ratio:11/6;overflow:hidden;background:#b9e3fa}canvas{display:block;width:100%;height:100%;touch-action:none}.hud{position:absolute;top:18px;left:24px;right:24px;display:flex;align-items:center;gap:18px;pointer-events:none}.hud b{background:#163b53;color:white;border-radius:10px;padding:9px 14px;font-size:14px}#score{font-weight:900;font-size:18px}#lives{margin-left:auto;color:#d64969;letter-spacing:5px}.mission{position:absolute;left:50%;top:64px;transform:translateX(-50%);width:80%;text-align:center;pointer-events:none}.mission small{font-size:9px;letter-spacing:3px;color:#3c7b9b}.mission h1{font-size:26px;margin:9px 0;text-shadow:0 2px white}.mission p{font-size:12px;margin:0;color:#40627b}.blank{display:inline-block;min-width:70px;border-bottom:3px solid #258bad;height:1em}#banner{position:absolute;top:37%;width:100%;text-align:center;font-size:25px;font-weight:900;color:#164e67;pointer-events:none;text-shadow:0 2px white}#overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;flex-direction:column;background:#eaf6fcdd;backdrop-filter:blur(5px);text-align:center}#overlay[hidden]{display:none}.eyebrow{font-size:10px;letter-spacing:4px;color:#407f9b}#overlay h2{font-size:43px;line-height:1.2;margin:20px 0}#overlay p{font-size:14px;line-height:1.9;color:#426b80}#overlay button,#jump{background:#d84768;color:white;border-radius:12px;padding:14px 30px;border-bottom:4px solid #a82b48;font-weight:800}#overlay small{font-size:10px;margin-top:20px;color:#638399}footer{min-height:75px;display:flex;align-items:center;gap:22px;padding:12px 24px}footer>span{font-size:10px;color:#6b889a}footer>b{flex:1;font-size:12px}#jump{padding:11px 23px;font-size:14px}#jump small{font-size:9px;margin-left:8px}button:disabled{opacity:.4;cursor:default}button:focus-visible,a:focus-visible{outline:3px solid #258bad;outline-offset:3px}@media(max-width:700px){body{padding:0}main{border-radius:0}#arena{aspect-ratio:4/5}header{padding:0 12px;gap:12px}header strong{font-size:14px}header small{display:none}.mission{top:70px;width:92%}.mission h1{font-size:20px}.mission p{font-size:11px}.hud{left:12px;right:12px}.hud b{font-size:11px}#overlay h2{font-size:32px}footer{padding:10px;gap:10px;flex-wrap:wrap}footer>span{width:100%}#banner{font-size:20px}}

/* Secondary instructions are available before play or through help. */
footer>span{display:none}footer{min-height:65px}.mission #sentence,.mission #meaning{visibility:visible!important}#banner{transition:opacity .18s}

/* Permanent sentence mission panel; never treated as a transient notice. */
.mission{top:67px;width:min(76%,760px);padding:12px 24px 16px;background:linear-gradient(120deg,#ffffffed,#e6faffee);border:1px solid #ffffff;border-top:4px solid #299eae;border-bottom:4px solid #417992;border-radius:15px;box-shadow:0 9px 24px #24597726,inset 0 0 0 1px #b2dfe6;backdrop-filter:blur(5px)}.mission:before,.mission:after{content:'';position:absolute;top:14px;width:5px;height:5px;border-radius:50%;background:#527c90;box-shadow:0 1px #fff}.mission:before{left:12px}.mission:after{right:12px}.mission small{font-size:9px;letter-spacing:2.5px;color:#468795;font-weight:800}.mission h1{margin:9px 0 0;font-size:25px;line-height:1.35;color:#234c65;text-shadow:none}.mission .blank{border-bottom-color:#218fa4;min-width:65px}@media(max-width:700px){.mission{top:64px;width:92%;padding:10px 16px 13px}.mission h1{font-size:18px;line-height:1.35}.mission small{font-size:8px}}