:root{color-scheme:dark;--deep:#052f55;--ocean:#087ca7;--aqua:#42d9d0;--sun:#ffd85a;--ink:#0a3152;--glass:rgba(239,253,255,.92);--white:#f7ffff;--danger:#ff715b;font-family:"Trebuchet MS","Microsoft YaHei",system-ui,sans-serif}*{box-sizing:border-box}body{margin:0;min-height:100vh;color:var(--white);background:#063c68;overflow-x:hidden}.ocean{position:fixed;inset:0;background:radial-gradient(circle at 75% 8%,#63dbe470 0 4%,transparent 25%),linear-gradient(180deg,#0c9ec1 0,#0878a8 38%,#06375f 100%);overflow:hidden;z-index:-2}.ocean:after{content:"";position:absolute;inset:0;background:repeating-linear-gradient(110deg,transparent 0 10%,#9ff4f20b 13%,transparent 17%);animation:light 8s ease-in-out infinite alternate}.ocean i{position:absolute;bottom:-70px;width:18px;height:18px;border:2px solid #d4ffff99;border-radius:50%;animation:bubble 9s linear infinite}.ocean i:nth-child(1){left:7%;animation-delay:-1s}.ocean i:nth-child(2){left:24%;width:9px;height:9px;animation-delay:-7s}.ocean i:nth-child(3){left:47%;width:26px;height:26px;animation-delay:-4s}.ocean i:nth-child(4){left:65%;animation-delay:-8s}.ocean i:nth-child(5){left:82%;width:12px;height:12px;animation-delay:-2s}.ocean i:nth-child(6){left:93%;width:31px;height:31px;animation-delay:-6s}@keyframes bubble{to{transform:translateY(-115vh) translateX(35px);opacity:0}}@keyframes light{to{transform:translateX(5%)}}.shell{width:min(1080px,100%);min-height:100vh;margin:auto;padding:clamp(14px,3vw,34px);display:grid;place-items:center}.screen{width:100%}.setup-card,.panel-screen{background:linear-gradient(145deg,rgba(4,50,82,.72),rgba(4,38,71,.92));border:1px solid #baffff45;border-radius:32px;padding:clamp(20px,4vw,44px);box-shadow:0 28px 70px #001a3380;backdrop-filter:blur(16px)}.brand{display:flex;align-items:center;justify-content:center;gap:18px;margin-bottom:28px;text-align:left}.brand img{width:clamp(90px,15vw,150px);filter:drop-shadow(0 12px 13px #001a4466)}.brand p,.panel-header p,.eyebrow{margin:0;color:#a8fff4;font-size:.78rem;font-weight:900;letter-spacing:.16em;text-transform:uppercase}.brand h1{margin:0;font-size:clamp(2.2rem,6vw,4.4rem);line-height:.92}.brand span{color:var(--sun);font-weight:900}.setup-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}.glass{background:var(--glass);color:var(--ink);border-radius:24px;padding:22px;box-shadow:inset 0 1px #fff}.glass h2{font-size:1.1rem;margin:0 0 16px}.section-head{display:flex;align-items:center;justify-content:space-between}.link-button{border:0;background:none;color:#087ca7;font-weight:900;padding:8px}.library-list{display:grid;gap:8px;max-height:280px;overflow:auto}.library-list label{display:flex;gap:12px;align-items:center;padding:12px;border:2px solid #b7e3e7;border-radius:15px;cursor:pointer}.library-list label:has(input:checked){border-color:#05a7b8;background:#dffbfa}.library-list input{width:20px;height:20px;accent-color:#008da4}.library-list b{display:block}.library-list small{color:#527184}.muted{font-size:.88rem;color:#527184}.round-choices{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.round-choices button,.tabs button{border:2px solid #acdce1;background:#fff;color:var(--ink);font-weight:900;border-radius:14px;padding:13px}.round-choices button.active,.tabs button.active{background:var(--ocean);border-color:var(--ocean);color:#fff}.setup-actions{display:grid;gap:10px;margin-top:24px}button{font:inherit;cursor:pointer}.primary,.secondary{border:0;border-radius:17px;padding:15px 22px;font-weight:900}.primary{background:linear-gradient(#ffe271,#ffc73d);color:#5b3b00;box-shadow:0 7px 0 #bd7f17}.primary:active{transform:translateY(4px);box-shadow:0 3px 0 #bd7f17}.primary:disabled{filter:grayscale(1);opacity:.55}.secondary{background:#dff9fa;color:#075c72}.error{color:#bd2432;font-weight:800}.play-screen{align-self:stretch}.game-header{display:grid;grid-template-columns:auto auto 1fr;gap:15px;align-items:center;margin-bottom:18px}.game-header>div:nth-child(2){display:grid}.game-header span{font-size:.85rem;color:#b9f7f4}.round-button{width:46px;height:46px;border-radius:50%;border:1px solid #d5ffff66;background:#073d64aa;color:white;font-size:1.4rem}.progress-track{height:12px;background:#053653;border-radius:99px;overflow:hidden}.progress-track i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--aqua),var(--sun));transition:width .3s}.game-stage{position:relative;min-height:650px;border:1px solid #b8ffff45;border-radius:34px;padding:clamp(20px,4vw,40px);background:linear-gradient(#0c7f9c77,#063657ee);box-shadow:inset 0 0 80px #00182a66;overflow:hidden;display:flex;flex-direction:column;align-items:center}.game-stage:after{content:"";position:absolute;left:-10%;right:-10%;bottom:-55px;height:160px;background:#075577;border-radius:50% 50% 0 0/28% 28% 0 0;z-index:0}.prompt,.slots,.lives,.feedback,.keyboard{position:relative;z-index:1}.prompt{text-align:center}.prompt span{font-size:.85rem;color:#a9fff5;font-weight:800}.prompt h2{font-size:clamp(2rem,5vw,3.5rem);margin:8px 0}.audio-button{border:1px solid #cfffff77;background:#e9ffff22;color:#fff;border-radius:50%;width:50px;height:50px;font-size:1.35rem}.slots{display:flex;justify-content:center;flex-wrap:wrap;gap:7px;margin:26px 0 18px}.slot{width:clamp(31px,5vw,49px);height:58px;border-bottom:4px solid #a9edf1;display:grid;place-items:center;font-size:clamp(1.45rem,4vw,2.1rem);font-weight:900}.slot.space{border:2px dashed #75ced6;border-bottom-width:4px;border-radius:10px}.slot.correct{color:var(--sun);animation:tick .24s ease}.slot.current{background:#d9ffff12;border-radius:9px}@keyframes tick{50%{transform:translateY(-5px);text-shadow:0 0 18px #fff}}.lives{display:flex;gap:12px;align-items:center;font-weight:900;color:#b7f7f5}.lives>div{display:flex;gap:4px}.life{font-size:1.65rem;transition:.35s}.life.lost{animation:swim-away .45s forwards}@keyframes swim-away{40%{transform:translateX(10px) rotate(-15deg)}to{transform:translateX(65px) scale(.6);opacity:0}}.feedback{min-height:26px;color:#fff;font-weight:900}.feedback.wrong{color:#ffd1c7}.keyboard{width:min(760px,100%);margin-top:auto;display:flex;flex-wrap:wrap;justify-content:center;gap:7px}.key{min-width:48px;min-height:48px;border:1px solid #b9f9fa99;border-radius:12px;background:linear-gradient(#f5ffff,#c6eff0);color:#073c58;font-weight:900;box-shadow:0 4px 0 #73aeb7}.key:active{transform:translateY(3px);box-shadow:0 1px 0 #73aeb7}.key.wide{min-width:108px}.key.shift.active{background:var(--sun)}.overlay{position:fixed;inset:0;z-index:20;background:#021e37c9;display:grid;place-items:center;padding:20px;backdrop-filter:blur(7px)}[hidden]{display:none!important}.memory-card,.failure-card{width:min(680px,100%);padding:clamp(28px,6vw,58px);border-radius:30px;background:#e9ffff;color:var(--ink);text-align:center;box-shadow:0 30px 90px #001526}.memory-card p{font-weight:900;color:#397285}.memory-word{display:flex;flex-wrap:wrap;justify-content:center;font-size:clamp(2rem,8vw,5rem);font-weight:900;margin:25px 0}.memory-char.error-position{color:#c94f3b;background:#ffd95866;border-radius:9px;text-decoration:underline;text-decoration-thickness:5px;text-underline-offset:8px}.memory-card .audio-button{background:#0a789a}.memory-progress{height:5px;background:#c0e6e8;margin-top:28px;border-radius:5px;overflow:hidden}.memory-progress i{display:block;height:100%;background:#0ba1ac;animation:memory-time 6s linear forwards}@keyframes memory-time{to{width:0}}.celebration{position:fixed;inset:0;z-index:25;pointer-events:none;display:grid;place-items:center}.celebration img{position:absolute;width:min(270px,45vw);animation:fish-jump var(--celebrate-ms,2.2s) cubic-bezier(.2,.75,.25,1) forwards}.celebration.compact img{--celebrate-ms:1.3s}@keyframes fish-jump{0%{transform:translateY(55vh) rotate(-8deg);opacity:0}18%{opacity:1}50%{transform:translateY(-10vh) rotate(4deg)}65%{transform:translateY(-7vh) rotate(-4deg)}100%{transform:translateY(58vh) rotate(10deg);opacity:0}}.ripple{position:absolute;width:80px;height:25px;border:5px solid #d9ffffaa;border-radius:50%;animation:ripple 1s ease-out forwards}.r2{animation-delay:.15s}@keyframes ripple{to{transform:scale(5);opacity:0}}.splash{position:absolute;font-size:3rem;top:62%;color:#d9ffff;animation:splash var(--celebrate-ms,2.2s) ease forwards}@keyframes splash{0%,75%{opacity:0;transform:scale(.4)}85%{opacity:1;transform:scale(1.3)}to{opacity:0}}.failure-card strong{display:block;font-size:clamp(2.3rem,9vw,5rem);color:#0a6f91;margin:16px}.failure-card span{font-weight:900}.panel-screen{max-width:820px;color:#fff}.panel-header{display:flex;gap:18px;align-items:center}.panel-header h1{margin:4px 0}.tabs{display:flex;gap:8px;margin:24px 0}.tabs button{flex:1}.book-status{padding:16px;border-radius:15px;background:#d7ffff19;margin-bottom:12px}.book-list{display:grid;gap:10px;max-height:420px;overflow:auto;margin-bottom:20px}.book-row{display:grid;grid-template-columns:1fr auto auto;gap:12px;align-items:center;background:#e9ffff;color:var(--ink);padding:14px 16px;border-radius:16px}.book-row b,.book-row span{display:block}.book-row small{color:#547283}.book-row button{border:0;border-radius:10px;padding:9px;background:#0b819a;color:#fff;font-weight:900}.summary{text-align:center}.summary-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:25px 0}.summary-stats div{padding:20px 8px;background:#d9ffff18;border-radius:18px}.summary-stats strong,.summary-stats span{display:block}.summary-stats strong{font-size:2.4rem;color:var(--sun)}.summary-words{display:grid;gap:8px;margin:20px 0}.summary-words div{display:flex;justify-content:space-between;padding:10px 14px;background:#d9ffff13;border-radius:12px}.summary>.primary,.summary>.secondary{margin:5px}.stage-bubbles{position:absolute;inset:0;pointer-events:none}@media(max-width:720px){.shell{padding:10px}.setup-card,.panel-screen{border-radius:22px;padding:18px}.brand{justify-content:flex-start}.brand img{width:82px}.setup-grid{grid-template-columns:1fr}.game-stage{min-height:calc(100vh - 95px);border-radius:24px;padding:18px 12px}.game-header{grid-template-columns:auto 1fr}.game-header .progress-track{grid-column:1/-1}.key{min-width:30px;flex:1 0 8%;min-height:44px}.key.wide{flex-basis:25%}.slot{height:48px}.book-row{grid-template-columns:1fr auto}.book-row button{grid-column:1/-1}.summary-stats{grid-template-columns:1fr}}