:root{font-family:PingFang SC,Microsoft YaHei,Noto Sans CJK SC,sans-serif;color:#15395d;background:#78c8f1;font-synthesis:none;text-rendering:optimizeLegibility}*{box-sizing:border-box}html{min-width:320px;background:#78c8f1}body{min-width:320px;min-height:100dvh;margin:0}button,a{-webkit-tap-highlight-color:transparent}.playground{position:relative;height:100dvh;min-height:0;overflow:hidden;padding:5px 20px;background:radial-gradient(circle at 14% 12%,rgb(255 255 255 / .78) 0 3%,transparent 3.2%),radial-gradient(circle at 84% 17%,rgb(255 255 255 / .55) 0 5%,transparent 5.2%),linear-gradient(180deg,#7bcaf2,#c9edfa 54%,#dff5d3)}.playground:after{position:absolute;right:-6%;bottom:-110px;left:-6%;height:200px;border-radius:50% 50% 0 0;background:#8fd35e;content:""}.sky-decor{position:absolute;z-index:0;border-radius:999px;background:#ffffffd1;filter:blur(1px)}.sky-decor:before,.sky-decor:after{position:absolute;border-radius:inherit;background:inherit;content:""}.sky-decor-one{top:115px;left:-24px;width:138px;height:42px}.sky-decor-one:before{top:-27px;left:25px;width:68px;height:68px}.sky-decor-one:after{top:-13px;left:77px;width:57px;height:57px}.sky-decor-two{top:245px;right:-22px;width:150px;height:38px;opacity:.7}.sky-decor-two:before{top:-30px;left:38px;width:75px;height:75px}.sky-decor-two:after{top:-15px;left:91px;width:55px;height:55px}.app-shell{position:relative;z-index:1;width:min(1180px,100%);margin:0 auto}.brand-stage{position:relative;display:grid;grid-template-columns:1fr 340px 1fr;align-items:center;min-height:200px;padding:6px 34px 4px}.brand-copy{align-self:center;width:100%}h1{margin:0;color:#fffaf0;font-size:clamp(42px,5vw,66px);font-weight:950;letter-spacing:-.075em;line-height:.95;text-shadow:0 4px 0 #e95727,0 8px 18px rgb(26 86 128 / .18)}.brand-logo-title{width:min(360px,100%);line-height:0;letter-spacing:normal;text-shadow:none}.brand-logo{display:block;width:100%;height:auto;filter:drop-shadow(0 10px 12px rgb(25 91 132 / .13))}.mascot-stage{position:relative;align-self:end;height:200px}.mascot-halo{position:absolute;top:24px;left:50%;width:250px;height:190px;transform:translate(-50%);border-radius:50%;background:#ffef7c94;filter:blur(3px)}.mascot{position:absolute;z-index:1;top:0;left:50%;width:275px;height:292px;transform:translate(-50%);object-fit:contain;object-position:center 19%;filter:drop-shadow(0 18px 15px rgb(32 93 116 / .25));animation:mascot-float 4s ease-in-out infinite}.teacher-note{justify-self:end;width:min(280px,100%);padding:14px 17px;border:2px solid rgb(255 255 255 / .8);border-radius:18px;background:#ffffffd1;box-shadow:0 8px 20px #1c5b811f}.teacher-note span{display:block;margin-bottom:3px;color:#16864b;font-size:14px;font-weight:900}.teacher-note p{margin:0;color:#375c73;font-size:14px;font-weight:650;line-height:1.55}.chat-card{position:relative;height:clamp(500px,calc(100dvh - 220px),650px);min-height:500px;overflow:hidden;border:6px solid rgb(255 255 255 / .8);border-radius:30px;background:#f7f9fc;box-shadow:0 24px 55px #145a8333,inset 0 1px #fff}.field-line{position:absolute;z-index:3;top:-4px;left:50%;width:100px;height:42px;transform:translate(-50%);border:4px solid rgb(255 255 255 / .76);border-top:0;border-radius:0 0 50px 50px;pointer-events:none}.field-line i{position:absolute;bottom:-2px;left:50%;width:34px;height:18px;transform:translate(-50%);border:3px solid rgb(255 255 255 / .7);border-bottom:0;border-radius:30px 30px 0 0}.chat-frame{width:100%;height:100%;border:0;opacity:0;transition:opacity .38s ease}.chat-frame.is-ready{opacity:1}.chat-loading{position:absolute;z-index:2;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;background:#f7f9fc;color:#235578}.chat-loading strong{font-size:19px}.chat-loading span{color:#657b8b;font-size:14px}.loading-ball{width:46px;height:46px;border:6px solid #fff;border-radius:50%;background:radial-gradient(circle at 50% 20%,#1f2d3a 0 17%,transparent 18%),radial-gradient(circle at 20% 68%,#1f2d3a 0 15%,transparent 16%),radial-gradient(circle at 80% 68%,#1f2d3a 0 15%,transparent 16%),#fff;box-shadow:0 7px 12px #23557829;animation:ball-bounce 1.1s ease-in-out infinite}footer{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:13px 7px 0;color:#315b70;font-size:13px;font-weight:650}footer p{margin:0}footer a{flex:0 0 auto;color:#176fb4;font-weight:800;text-underline-offset:3px}footer a:focus-visible{border-radius:4px;outline:3px solid #ffbd2e;outline-offset:4px}@keyframes mascot-float{0%,to{transform:translate(-50%) translateY(0) rotate(-1deg)}50%{transform:translate(-50%) translateY(-6px) rotate(1deg)}}@keyframes ball-bounce{0%,to{transform:translateY(0) rotate(-4deg)}50%{transform:translateY(-9px) rotate(8deg)}}@media (max-width: 800px){.playground{height:auto;min-height:100dvh;padding:12px 10px 22px}.brand-stage{grid-template-columns:1fr 215px;min-height:210px;padding:2px 14px 0}.brand-copy{position:relative;z-index:2}h1{font-size:clamp(37px,11vw,52px)}.mascot-stage{height:210px}.mascot-halo{top:27px;width:188px;height:150px}.mascot{top:0;width:215px;height:242px}.teacher-note{display:none}.chat-card{height:560px;min-height:560px;border-width:4px;border-radius:23px}footer{display:block;padding:12px 4px 0;line-height:1.5;text-align:center}footer a{display:inline-block;margin-top:7px}}@media (max-width: 420px){.brand-stage{grid-template-columns:1fr 198px;min-height:200px;padding-right:4px;padding-left:8px}h1{font-size:39px}.mascot-stage{height:200px}.mascot{width:198px;height:228px}}@media (max-height: 800px) and (min-width: 801px){footer{display:none}}@media (prefers-reduced-motion: reduce){.mascot,.loading-ball{animation:none}.chat-frame{transition:none}}.dify-page{--dify-ink: #173f5d;--dify-blue: #287fc0;--dify-green: #248b58;--dify-yellow: #ffd95a;position:relative;min-height:100dvh;overflow:hidden;padding:16px clamp(16px,3vw,42px) 22px;background:radial-gradient(circle at 10% 12%,rgb(255 255 255 / .72) 0 3.5%,transparent 3.7%),radial-gradient(circle at 90% 20%,rgb(255 255 255 / .52) 0 4%,transparent 4.2%),linear-gradient(180deg,#79caf1,#c9edf8 58%,#cdecb9);color:var(--dify-ink);font-family:Outfit,PingFang SC,Microsoft YaHei,sans-serif}.dify-v3,.dify-v4{height:100dvh;overflow:clip}.dify-page:after{position:fixed;z-index:0;right:-8vw;bottom:-105px;left:-8vw;height:200px;border-radius:50% 50% 0 0;background:#79c951;content:"";pointer-events:none}.dify-header,.classroom-bar,.v3-chat-shell,.v4-stage-shell{position:relative;z-index:2;width:min(1380px,100%);margin-right:auto;margin-left:auto}.dify-header{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;min-height:72px;padding:0}.dify-header>a{display:flex;min-height:62px;align-items:center;justify-self:start;padding:8px 20px;border:3px solid rgb(255 255 255 / .92);border-radius:20px 20px 11px;background:#ffffffdb;box-shadow:0 7px #1f526f1c,0 14px 28px #1f526f24;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.dify-header img{display:block;width:158px;height:auto}.dify-header nav{display:flex;justify-content:center;gap:4px;padding:5px;border:3px solid rgb(255 255 255 / .92);border-radius:18px;background:#ffffffc2;box-shadow:0 7px #1f526f1a,0 14px 28px #1f526f1f;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.dify-header nav a,.dify-header nav button{display:flex;min-height:38px;align-items:center;justify-content:center;gap:6px;padding:9px 17px;border:0;border-radius:11px;background:transparent;color:#507085;font-size:14px;font-weight:850;text-decoration:none;cursor:pointer;transition:transform .18s ease,background .18s ease,color .18s ease}.dify-header nav a:hover,.dify-header nav button:hover{transform:translateY(-1px);color:#184f70}.dify-header nav a.is-current{background:#ffd95c;color:#654500;box-shadow:inset 0 -3px #8758001f}.dify-header nav svg{width:18px;height:18px;flex:0 0 auto}.dify-header-actions{display:flex;align-items:center;justify-self:end;gap:9px}.new-chat-button{display:flex;min-height:54px;align-items:center;justify-content:center;gap:7px;padding:10px 16px;border:3px solid rgb(255 255 255 / .92);border-radius:18px;background:#318ed7;color:#fff;font-size:13px;font-weight:850;box-shadow:0 7px #1f526f24,0 13px 24px #1f526f29;cursor:pointer;transition:transform .18s ease,filter .18s ease,box-shadow .18s ease}.new-chat-button:hover{transform:translateY(-3px) rotate(1deg);filter:brightness(1.04);box-shadow:0 10px #1f526f1f,0 17px 27px #1f526f2e}.new-chat-button:active{transform:translateY(3px) scale(.98);box-shadow:0 3px #1f526f24,0 7px 14px #1f526f29}.new-chat-button svg{width:18px;height:18px}.dify-header nav a:focus-visible,.dify-header nav button:focus-visible,.new-chat-button:focus-visible,.classroom-actions button:focus-visible,.mobile-tools button:focus-visible,.v4-suggestions button:focus-visible,.v4-input-zone .composer-icon:focus-visible,.v4-input-zone .send-button:focus-visible{outline:4px solid #ffbd2e;outline-offset:3px}.classroom-bar{z-index:4;display:flex;align-items:center;justify-content:space-between;gap:18px;overflow:visible;padding:11px 2px 12px}.classroom-bar:focus-within{z-index:12}.team-control{position:relative;z-index:1;display:flex;align-items:stretch;gap:7px}.team-control>label{position:relative;display:grid;min-width:190px;grid-template-rows:auto 1fr;padding:7px 42px 7px 14px;border:3px solid rgb(255 255 255 / .92);border-radius:18px 18px 10px;background:#ffffffe6;box-shadow:0 6px #1f526f17,0 12px 22px #1f526f1f;transition:transform .18s ease,box-shadow .18s ease}.team-control>label span{color:#678094;font-size:10px;font-weight:800}.team-control select{position:relative;z-index:2;width:100%;min-height:24px;padding:0;border:0;-webkit-appearance:none;-moz-appearance:none;appearance:none;outline:0;background:transparent;color:#174a6c;font-size:15px;font-weight:900;line-height:1.2;cursor:pointer;color-scheme:light}.team-control select option{background:#fff;color:#174a6c;font-weight:700}.team-control>label svg{position:absolute;z-index:3;right:14px;top:50%;width:17px;height:17px;transform:translateY(-25%);color:#2a7097;pointer-events:none}.team-control>label:hover{transform:translateY(-2px);box-shadow:0 8px #1f526f14,0 15px 25px #1f526f24}.team-control>label:focus-within{outline:4px solid #ffbd2e;outline-offset:3px}.team-control>strong{display:flex;min-width:62px;align-items:baseline;justify-content:center;padding:10px;border:2px solid #fff7d5;border-radius:14px 14px 8px;background:var(--dify-yellow);color:#684700;font-size:23px;font-variant-numeric:tabular-nums}.team-control>strong small{margin-left:2px;font-size:10px}.add-team-button{display:grid;width:44px;place-items:center;border-radius:14px;background:#fff;color:#238a58;cursor:pointer}.add-team-button svg{width:21px;height:21px}.add-team-popover{position:absolute;z-index:10;top:calc(100% + 8px);left:0;width:270px;padding:16px;border:3px solid #fff;border-radius:16px;background:#fffaf0;box-shadow:0 20px 44px #1a4f6d3d}.add-team-popover>label{display:block;margin-bottom:7px;font-size:13px;font-weight:900}.add-team-popover input{width:100%;padding:10px 11px;border:2px solid #bad7e5;border-radius:10px;background:#fff}.add-team-popover p{margin:6px 0 0;color:#c24943;font-size:12px;font-weight:750}.add-team-popover div{display:flex;justify-content:flex-end;gap:7px;margin-top:10px}.add-team-popover button{padding:8px 11px;border-radius:9px;background:#e7f0f4;color:#416479;font-weight:800;cursor:pointer}.add-team-popover button[type=submit]{background:#258f58;color:#fff}.classroom-actions{display:flex;align-items:center;gap:7px}.classroom-actions button,.mobile-tools button{display:flex;min-height:46px;align-items:center;gap:5px;padding:9px 13px;border:3px solid rgb(255 255 255 / .9);border-radius:15px;background:#318ed7;color:#fff;font-size:12px;font-weight:850;box-shadow:0 6px #1f526f21,0 11px 20px #1f526f24;cursor:pointer;transition:transform .18s ease,filter .18s ease,box-shadow .18s ease}.classroom-actions button:nth-child(1),.mobile-tools button:nth-child(1){background:#f6bd2f;color:#6c4800}.classroom-actions button:nth-child(2),.mobile-tools button:nth-child(2){background:#318ed7}.classroom-actions button.score-plus,.mobile-tools button.score-plus{background:#31a566;color:#fff}.classroom-actions button:nth-child(4),.mobile-tools button:nth-child(4){background:#ed8b3f}.classroom-actions button:nth-child(5),.mobile-tools button:nth-child(5){background:#dc655e}.classroom-actions button:nth-child(6),.mobile-tools button:nth-child(6){background:#f6bd2f;color:#6c4800}.classroom-actions button:hover:not(:disabled),.mobile-tools button:hover:not(:disabled){transform:translateY(-3px) rotate(-1deg);filter:brightness(1.04);box-shadow:0 9px #1f526f1c,0 15px 23px #1f526f2b}.classroom-actions button:active:not(:disabled),.mobile-tools button:active:not(:disabled){transform:translateY(3px) scale(.98);box-shadow:0 2px #1f526f21,0 6px 12px #1f526f26}.classroom-actions button:disabled,.mobile-tools button:disabled{opacity:.45;cursor:not-allowed}.classroom-actions svg,.mobile-tools svg{width:18px;height:18px}.v3-chat-shell{display:grid;grid-template-rows:minmax(0,1fr) auto;height:calc(100dvh - 200px);min-height:560px;overflow:hidden;border:5px solid rgb(255 255 255 / .88);border-radius:26px;background:#f5f9fb;box-shadow:0 22px 54px #19527430,inset 0 1px #fff}.dify-welcome{display:flex;max-width:820px;align-self:center;justify-self:center;flex-direction:column;align-items:center;padding:42px 26px 30px;text-align:center}.dify-welcome .welcome-kicker{margin:0 0 9px;color:#258a58;font-size:13px;font-weight:900}.dify-welcome h1{max-width:700px;margin:0;color:#174c70;font-size:clamp(27px,3vw,43px);font-weight:950;letter-spacing:-.045em;line-height:1.16;text-shadow:none;white-space:pre-wrap}.age-picker{display:flex;gap:6px;margin:24px 0 18px;padding:5px;border-radius:14px;background:#e8f2f6}.age-picker button{padding:8px 18px;border-radius:10px;background:transparent;color:#587386;font-size:13px;font-weight:850;cursor:pointer}.age-picker button.is-active{background:#fff;color:#16724a;box-shadow:0 3px 10px #1f58771f}.suggestion-grid{display:grid;width:100%;grid-template-columns:1fr 1fr;gap:9px}.suggestion-grid button{min-height:56px;padding:12px 15px;border:2px solid #d4e6ee;border-radius:14px;background:#fff;color:#315f78;font-size:14px;font-weight:750;line-height:1.45;text-align:left;cursor:pointer;transition:transform .15s ease,border-color .15s ease}.suggestion-grid button:hover{transform:translateY(-2px);border-color:#6eb6d9}.parameters-note{margin:12px 0 0;color:#718798;font-size:12px}.dify-messages{min-height:0;overflow-y:auto;padding:30px clamp(18px,4vw,58px) 24px;overscroll-behavior:contain;scroll-padding-bottom:24px}.dify-message{display:flex;max-width:min(760px,86%);align-items:flex-start;gap:9px;margin-bottom:18px}.dify-message.is-user{margin-left:auto;justify-content:flex-end}.message-avatar{width:42px;height:42px;flex:0 0 auto;border:3px solid #fff;border-radius:50%;background:#fff0a7;object-fit:cover;object-position:center 22%}.message-body{min-width:0;padding:13px 16px;border:2px solid #dae9ef;border-radius:8px 17px 17px;background:#fff;box-shadow:0 7px 18px #275b7714;color:#31576d;font-size:15px;line-height:1.75;overflow-wrap:anywhere}.is-user .message-body{border-color:#27935a;border-radius:17px 8px 17px 17px;background:#27935a;color:#fff}.message-body>:first-child{margin-top:0}.message-body>:last-child{margin-bottom:0}.message-body p{margin:0 0 10px}.message-body ul,.message-body ol{padding-left:1.4em}.message-body a{color:#156fa7;font-weight:750;text-underline-offset:3px}.message-body code{padding:2px 5px;border-radius:5px;background:#eaf2f5;font-size:.9em}.message-body img,.message-image{display:block;max-width:100%;max-height:420px;margin:10px 0 0;border-radius:12px;object-fit:contain}.message-error{display:flex;align-items:flex-start;gap:7px;color:#b84640;font-weight:750}.message-error svg{width:20px;height:20px;flex:0 0 auto;margin-top:3px}.audio-missing{display:flex;align-items:center;gap:6px;margin-top:9px!important;color:#708493;font-size:12px;font-weight:700}.audio-missing svg{width:17px;height:17px;flex:0 0 auto}.audio-control{display:flex;align-items:center;gap:7px;margin-top:10px;padding:8px 11px;border-radius:10px;background:#e5f4fb;color:#176b9f;font-size:13px;font-weight:850;cursor:pointer}.audio-control svg{width:21px;height:21px}.typing-dots{display:flex;gap:5px;padding:5px 2px}.typing-dots i{width:7px;height:7px;border-radius:50%;background:#5aa3c7;animation:typing-pulse 1s ease-in-out infinite}.typing-dots i:nth-child(2){animation-delay:.14s}.typing-dots i:nth-child(3){animation-delay:.28s}.dify-composer{position:relative;padding:12px 14px 10px;border-top:2px solid #e0edf1;background:#fff}.composer-row{display:grid;grid-template-columns:46px 1fr auto;align-items:end;gap:9px}.composer-icon{display:grid;width:46px;height:46px;place-items:center;border-radius:14px;background:#e5f4fb;color:#1772aa;cursor:pointer}.composer-icon.is-recording{background:#fee4e1;color:#cc4e45;animation:record-pulse 1.2s ease-in-out infinite}.composer-icon svg{width:23px;height:23px}.dify-composer textarea{width:100%;min-height:46px;max-height:130px;resize:vertical;padding:12px 14px;border:2px solid #cfe1e8;border-radius:14px;outline:none;background:#f9fbfc;color:#244f67;font-size:15px;line-height:1.45}.dify-composer textarea:focus{border-color:#5faed3;box-shadow:0 0 0 4px #5faed329}.send-button{display:flex;min-width:91px;height:46px;align-items:center;justify-content:center;gap:7px;padding:0 15px;border-radius:14px;background:#248e58;color:#fff;font-weight:900;cursor:pointer}.send-button.is-stop{background:#d95d55}.send-button:disabled{opacity:.42;cursor:not-allowed}.send-button svg{width:20px;height:20px}.auto-read-toggle{display:flex;width:max-content;align-items:center;gap:7px;margin:8px 0 0 56px;color:#5c7788;font-size:12px;cursor:pointer}.auto-read-toggle input{position:absolute;opacity:0;pointer-events:none}.auto-read-toggle>span{position:relative;width:31px;height:18px;border-radius:999px;background:#bfd1d9;transition:background .16s ease}.auto-read-toggle>span:after{position:absolute;top:3px;left:3px;width:12px;height:12px;border-radius:50%;background:#fff;content:"";transition:transform .16s ease}.auto-read-toggle input:checked+span{background:#2c9a62}.auto-read-toggle input:checked+span:after{transform:translate(13px)}.auto-read-toggle input:focus-visible+span{outline:3px solid #ffbd2e;outline-offset:3px}.composer-error{display:flex;align-items:center;gap:6px;margin:0 0 8px 55px;color:#bd4942;font-size:12px;font-weight:750}.composer-error svg{width:17px;height:17px}.v4-stage-shell{position:relative;display:grid;grid-template-columns:minmax(250px,.72fr) minmax(320px,.94fr) minmax(360px,1.08fr);grid-template-rows:minmax(0,1fr);height:calc(100dvh - 200px);min-height:min(560px,calc(100dvh - 200px));overflow:clip;border-radius:30px;background:radial-gradient(circle at 72% 15%,#fff3aa 0 4.5%,rgb(255 243 170 / .24) 4.7% 8%,transparent 8.2%),linear-gradient(180deg,#d3f2fafa,#effaeffa 76%,#8bd05b 76.2%,#72c249);box-shadow:0 24px 58px #19527426;isolation:isolate}.v4-stage-shell:after{position:absolute;z-index:-1;right:-8%;bottom:-26%;left:18%;height:44%;border:3px solid rgb(255 255 255 / .28);border-radius:50% 50% 0 0;content:""}.v4-input-zone{z-index:3;display:flex;min-width:0;flex-direction:column;padding:clamp(32px,5vh,58px) 14px 28px clamp(24px,3vw,42px)}.v4-input-heading>p,.digital-reply-label{margin:0 0 7px;color:#258a58;font-size:12px;font-weight:900;letter-spacing:.08em}.v4-input-heading h1{max-width:310px;margin:0;color:#184f6c;font-size:clamp(27px,2.35vw,38px);font-weight:950;letter-spacing:-.045em;line-height:1.08;text-shadow:none;text-wrap:balance}.latest-question{max-width:300px;margin-top:18px;color:#537488;font-size:12px}.latest-question span{display:block;margin-bottom:3px;font-weight:700}.latest-question strong{display:-webkit-box;overflow:hidden;color:#285f78;font-size:13px;line-height:1.5;-webkit-box-orient:vertical;-webkit-line-clamp:2}.v4-input-zone .dify-composer{margin-top:18px;padding:0;border:0;background:transparent}.v4-input-zone .composer-row{grid-template-areas:"input input" "voice send";grid-template-columns:46px 1fr;align-items:center;gap:9px}.v4-input-zone .composer-icon{grid-area:voice;border:3px solid rgb(255 255 255 / .9);border-radius:50%;background:#318ed7;color:#fff;box-shadow:0 6px #1f526f21,0 10px 18px #1f526f24;transition:transform .18s ease,box-shadow .18s ease}.v4-input-zone .composer-icon:hover{transform:translateY(-2px) rotate(-3deg);box-shadow:0 8px #1f526f1c,0 13px 21px #1f526f29}.v4-input-zone .composer-icon:active{transform:translateY(3px) scale(.97);box-shadow:0 2px #1f526f21}.v4-input-zone .composer-icon:disabled{opacity:.5;cursor:wait;transform:none}.v4-input-zone .dify-composer textarea{grid-area:input;min-height:96px;max-height:160px;resize:none;padding:15px;border:3px solid rgb(255 255 255 / .92);border-radius:18px 18px 10px;background:#ffffffe6;box-shadow:0 7px #1f526f14,0 14px 28px #2e697e1c}.v4-input-zone .dify-composer textarea:focus{box-shadow:0 0 0 4px #5faed333,0 12px 28px #2e697e1c}.v4-input-zone .dify-composer textarea:disabled{background:#eef6f8c7;color:#6d8793;cursor:wait}.v4-input-zone .send-button{grid-area:send;width:100%;border:3px solid rgb(255 255 255 / .9);border-radius:15px;box-shadow:0 6px #19643e2e,0 11px 20px #1f526f24;transition:transform .18s ease,box-shadow .18s ease}.v4-input-zone .send-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px #19643e26,0 14px 23px #1f526f29}.v4-input-zone .send-button:active:not(:disabled){transform:translateY(3px) scale(.99);box-shadow:0 2px #19643e2e}.v4-input-zone .auto-read-toggle{margin:10px 0 0}.v4-input-zone .composer-error{margin:0 0 8px}.v4-prompt-tools{margin-top:24px}.v4-prompt-tools>p{margin:0 0 9px;color:#56788a;font-size:12px;font-weight:850}.v4-suggestions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.v4-suggestions button{min-height:52px;padding:9px 11px;border:2px solid rgb(255 255 255 / .88);border-radius:12px 12px 7px;background:#e8f6fbe0;color:#245c79;font-size:14px;font-weight:800;line-height:1.28;text-align:left;box-shadow:0 4px #1f526f17,0 8px 16px #1f526f14;cursor:pointer;transition:color .18s ease,transform .18s ease,box-shadow .18s ease}.v4-suggestions button:nth-child(2){background:#fff4bee6;color:#72510a}.v4-suggestions button:nth-child(3){background:#e6f7e7e6;color:#216b47}.v4-suggestions button:nth-child(4){background:#e7effceb;color:#285a85}.v4-suggestions button:hover{transform:translateY(-2px) translate(2px);box-shadow:0 6px #1f526f14,0 12px 19px #1f526f1f}.v4-suggestions button:active{transform:translateY(2px);box-shadow:0 1px #1f526f1a}.v4-suggestions.is-quiz-options{grid-template-columns:1fr}.v4-suggestions.is-quiz-options button{min-height:58px;padding:12px 16px;border-width:3px;border-radius:16px 16px 9px;font-size:17px;text-align:center}.v4-suggestions button:disabled{opacity:.72;cursor:wait;transform:none}.v4-suggestions button.quiz-retry{grid-column:1 / -1;background:#fff0ba;color:#765300;text-align:center}.quiz-load-error{margin:9px 0 0;color:#a14842;font-size:12px;font-weight:800;line-height:1.4}.quiz-feedback{margin:10px 0 0;padding:9px 11px;border-radius:11px;font-size:13px;font-weight:900;line-height:1.4;animation:quiz-feedback-in .24s ease-out both}.quiz-feedback.is-correct{background:#dcf5e0eb;color:#177148}.quiz-feedback.is-wrong{background:#ffe7d8f0;color:#9d4d39}.avatar-stage{position:relative;min-height:0;overflow:hidden;background:linear-gradient(180deg,#bfe8f7,#edf8ef 78%,#9fd86f 78%)}.avatar-sun{position:absolute;top:8%;right:9%;width:92px;height:92px;border-radius:50%;background:#fff2a9;box-shadow:0 0 0 20px #fff2a940}.avatar-state-pill{position:absolute;z-index:3;top:18px;left:18px;display:flex;align-items:center;gap:7px;padding:8px 12px;border:2px solid rgb(255 255 255 / .9);border-radius:999px;background:#ffffffd6;color:#315f76;font-size:12px;font-weight:850}.avatar-state-pill i{width:8px;height:8px;border-radius:50%;background:#45a96e;box-shadow:0 0 0 4px #45a96e29}.avatar-thinking .avatar-state-pill i{background:#e7a728}.avatar-speaking .avatar-state-pill i{background:#2b87c6}.avatar-error .avatar-state-pill i{background:#d65e56}.avatar-image-wrap{position:absolute;z-index:2;top:3%;right:6%;bottom:0;left:6%;display:flex;align-items:flex-end;justify-content:center;transform-origin:center bottom;backface-visibility:hidden;animation:avatar-idle 2.8s ease-in-out infinite;will-change:transform}.avatar-listening .avatar-image-wrap{animation:avatar-listening 2.15s ease-in-out infinite}.avatar-thinking .avatar-image-wrap{animation:avatar-thinking 2.65s ease-in-out infinite}.avatar-speaking .avatar-image-wrap{animation:avatar-speaking 1.35s ease-in-out infinite}.avatar-celebrating .avatar-image-wrap{animation:avatar-celebrating .9s cubic-bezier(.45,0,.35,1) infinite}.avatar-error .avatar-image-wrap{animation:avatar-reassure 3.2s ease-in-out infinite}.avatar-listening .avatar-state-pill i,.avatar-thinking .avatar-state-pill i,.avatar-speaking .avatar-state-pill i,.avatar-celebrating .avatar-state-pill i{animation:avatar-status-pulse 1.6s ease-out infinite}.avatar-image-wrap img{display:block;width:100%;height:100%;object-fit:contain;object-position:center bottom;filter:drop-shadow(0 18px 18px rgb(34 86 94 / .2))}.avatar-field{position:absolute;right:-15%;bottom:-12%;left:-15%;height:40%;border:4px solid rgb(255 255 255 / .32);border-radius:50% 50% 0 0;background:#80cc54}.avatar-field span{position:absolute;top:0;left:50%;width:160px;height:80px;transform:translate(-50%);border:5px solid rgb(255 255 255 / .45);border-top:0;border-radius:0 0 100px 100px}.avatar-field i{position:absolute;top:0;left:50%;width:2px;height:100%;background:#ffffff57}.v4-stage-shell .avatar-stage{z-index:2;overflow:visible;background:transparent}.v4-stage-shell .avatar-sun,.v4-stage-shell .avatar-field{display:none}.v4-stage-shell .avatar-image-wrap{top:7%;right:-10%;bottom:-2%;left:-7%}.v4-stage-shell .avatar-state-pill{top:18%;left:-1%;transform:none;border:0;background:#ffffffc7;box-shadow:0 7px 18px #30667a14;white-space:nowrap}.digital-reply{z-index:3;display:flex;min-width:0;min-height:0;flex-direction:column;align-self:stretch;justify-content:center;padding:24px clamp(28px,3vw,48px) 24px 22px}.digital-reply-label{margin-left:24px}.digital-text-bubble{position:relative;max-height:268px;overflow-y:auto;padding:20px 22px;border-radius:8px 24px 24px;background:#fffffff0;box-shadow:0 18px 38px #2b637824;color:#31576d;font-size:clamp(14px,1.12vw,17px);line-height:1.72;overflow-wrap:anywhere}.digital-text-bubble:before{position:absolute;top:24px;left:-14px;width:20px;height:24px;background:inherit;clip-path:polygon(100% 0,100% 100%,0 48%);content:""}.digital-text-bubble>:first-child{margin-top:0}.digital-text-bubble>:last-child{margin-bottom:0}.digital-text-bubble p{margin:0 0 10px}.digital-text-bubble ul,.digital-text-bubble ol{padding-left:1.35em}.digital-text-bubble a{color:#156fa7;font-weight:750}.digital-text-bubble.has-error{color:#99453f}.digital-reply:has(.digital-image-frame) .digital-text-bubble{max-height:190px}.digital-image-frame{position:relative;width:100%;flex:none;aspect-ratio:16 / 9;margin:15px 0 0;overflow:hidden;border-radius:20px;background:#ffffff8c;box-shadow:0 17px 34px #2b637824,inset 0 0 0 3px #fffc}.digital-image-frame img,.digital-image-frame video{display:block;width:100%;height:100%;object-fit:contain}.digital-image-frame.is-video{background:#173f5d}.media-play-control{position:absolute;right:14px;bottom:13px;display:flex;min-height:42px;align-items:center;gap:7px;padding:8px 13px;border:2px solid rgb(255 255 255 / .85);border-radius:12px;background:#173f5de0;color:#fff;font-size:12px;font-weight:850;box-shadow:0 5px 14px #0a25384d;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);cursor:pointer;transition:transform .18s ease,background .18s ease}.media-play-control:hover{transform:translateY(-2px);background:#248e58f2}.media-play-control:active{transform:translateY(1px) scale(.98)}.media-play-control:focus-visible{outline:4px solid #ffbd2e;outline-offset:3px}.media-play-control svg{width:21px;height:21px}.mobile-tools{display:none}.dify-sky-cloud{position:fixed;z-index:0;width:150px;height:38px;border-radius:999px;background:#ffffff91}.dify-sky-cloud:before,.dify-sky-cloud:after{position:absolute;border-radius:50%;background:inherit;content:""}.dify-sky-cloud:before{width:70px;height:70px;top:-32px;left:25px}.dify-sky-cloud:after{width:52px;height:52px;top:-18px;right:16px}.cloud-a{top:180px;left:-45px}.cloud-b{top:265px;right:-35px;transform:scale(.8)}@keyframes typing-pulse{0%,to{transform:translateY(0);opacity:.45}50%{transform:translateY(-4px);opacity:1}}@keyframes record-pulse{50%{box-shadow:0 0 0 7px #d95d551f}}@keyframes quiz-feedback-in{0%{transform:translateY(5px);opacity:0}to{transform:translateY(0);opacity:1}}@keyframes avatar-idle{0%,to{transform:translateZ(0) rotate(0) scale(1)}32%{transform:translate3d(-2px,-7px,0) rotate(-.75deg) scale(1.008)}68%{transform:translate3d(2px,-3px,0) rotate(.55deg) scale(1.004)}}@keyframes avatar-listening{0%,to{transform:translateZ(0) rotate(0) scale(1)}48%{transform:translate3d(5px,-7px,0) rotate(1.1deg) scale(1.012)}}@keyframes avatar-thinking{0%,to{transform:translateZ(0) rotate(-.5deg) scale(1)}36%{transform:translate3d(-4px,-5px,0) rotate(-1.45deg) scale(1.007)}72%{transform:translate3d(3px,-3px,0) rotate(1.15deg) scale(1.004)}}@keyframes avatar-speaking{0%,to{transform:translateZ(0) rotate(0) scale(1)}28%{transform:translate3d(-3px,-8px,0) rotate(-.8deg) scale(1.014)}62%{transform:translate3d(3px,-3px,0) rotate(.85deg) scale(1.006)}}@keyframes avatar-celebrating{0%,to{transform:translateZ(0) rotate(0) scale(1)}42%{transform:translate3d(0,-14px,0) rotate(-1deg) scale(1.018,.986)}72%{transform:translate3d(0,-3px,0) rotate(.7deg) scale(.996,1.006)}}@keyframes avatar-reassure{0%,to{transform:translateZ(0) rotate(0) scale(1)}50%{transform:translate3d(0,-4px,0) rotate(-.45deg) scale(1.005)}}@keyframes avatar-status-pulse{0%,to{transform:scale(1);opacity:1}48%{transform:scale(1.28);opacity:.72}}@media (max-width: 1024px){.dify-page{padding:10px 12px 15px}.dify-header{grid-template-columns:minmax(155px,1fr) auto minmax(95px,1fr)}.dify-header img{width:145px}.classroom-actions button span{display:none}.classroom-actions button{width:41px;justify-content:center;padding:8px}.v3-chat-shell,.v4-stage-shell{height:calc(100dvh - 174px)}.v4-stage-shell{grid-template-columns:minmax(225px,.7fr) minmax(285px,.9fr) minmax(320px,1fr)}.v4-input-zone{padding-left:24px}.v4-input-heading h1{font-size:28px}.digital-reply{padding-right:25px}}@media (max-width: 767px){.dify-page{min-height:100dvh;overflow:auto;padding:8px}.dify-header{position:sticky;top:6px;z-index:8;grid-template-columns:1fr auto;grid-template-rows:auto auto;gap:7px;min-height:58px;padding:7px 8px 7px 12px;border-radius:16px}.dify-header>a{min-height:52px;padding:6px 13px;border-radius:16px 16px 9px}.dify-header img{width:128px}.dify-header nav{display:grid;width:100%;grid-column:1 / -1;grid-template-columns:repeat(2,minmax(0,1fr));gap:3px}.dify-header nav a,.dify-header nav button{min-height:40px;padding:8px 6px;font-size:12px}.dify-header-actions{gap:5px}.new-chat-button{min-width:50px;min-height:50px;padding:9px;font-size:0}.new-chat-button svg{width:20px;height:20px}.classroom-bar{padding:8px 2px}.team-control>label{min-width:146px}.classroom-actions{gap:4px}.classroom-actions button{width:36px;min-height:38px;border-radius:11px}.classroom-actions button:nth-child(1),.classroom-actions button:nth-child(2),.classroom-actions button:nth-child(5){display:none}.v3-chat-shell{height:calc(100dvh - 144px);min-height:580px;border-width:3px;border-radius:20px}.dify-welcome{padding:26px 14px 20px}.dify-welcome h1{font-size:27px}.suggestion-grid{grid-template-columns:1fr}.suggestion-grid button{min-height:48px}.dify-messages{padding:20px 12px 16px}.dify-message{max-width:95%}.message-avatar{width:34px;height:34px}.message-body{padding:11px 13px;font-size:14px}.dify-composer{padding:9px 9px 7px}.composer-row{grid-template-columns:42px 1fr auto;gap:6px}.composer-icon{width:42px;height:42px;border-radius:12px}.dify-composer textarea{min-height:42px;padding:10px 11px}.send-button{min-width:42px;width:42px;height:42px;padding:0;border-radius:12px}.send-button span{display:none}.auto-read-toggle,.composer-error{margin-left:48px}.dify-v4{height:auto;min-height:100dvh;overflow:auto}.dify-v4 .dify-header{position:relative;top:0}.dify-v4 .classroom-bar{padding:6px 1px}.dify-v4 .team-control>label{min-width:132px}.dify-v4 .add-team-button,.dify-v4 .classroom-actions{display:none}.v4-stage-shell{grid-template-columns:1fr;grid-template-rows:auto minmax(220px,32vh) auto;height:auto;min-height:calc(100dvh - 142px);overflow:visible;border-radius:18px}.v4-input-zone{grid-row:1;padding:26px 18px 8px}.v4-input-heading h1{max-width:none;font-size:29px}.latest-question{display:none}.v4-input-zone .dify-composer{margin-top:16px}.v4-input-zone .dify-composer textarea{min-height:82px}.v4-prompt-tools{margin-top:14px;padding-top:0}.v4-suggestions{grid-template-columns:repeat(2,minmax(0,1fr))}.v4-stage-shell .avatar-stage{grid-row:2;min-height:220px}.v4-stage-shell .avatar-image-wrap{top:0;right:16%;bottom:-3%;left:16%}.v4-stage-shell .avatar-state-pill{top:18%;left:12%;padding:6px 9px;font-size:10px}.digital-reply{grid-row:3;padding:6px 18px 28px}.digital-reply-label{margin-left:15px}.digital-text-bubble{max-height:none;padding:16px 17px;border-radius:8px 19px 19px}.digital-reply:has(.digital-image-frame) .digital-text-bubble{max-height:none}.digital-image-frame{border-radius:16px}.media-play-control{right:10px;bottom:9px;min-height:38px;padding:7px 10px}.mobile-tools{position:relative;display:block}.mobile-tools summary{min-width:92px;padding:10px 12px;border:3px solid rgb(255 255 255 / .9);border-radius:14px;background:#318ed7;color:#fff;font-size:12px;font-weight:850;box-shadow:0 5px #1f526f21,0 9px 16px #1f526f24;list-style:none;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease}.mobile-tools summary:active{transform:translateY(2px);box-shadow:0 2px #1f526f21}.mobile-tools summary::-webkit-details-marker{display:none}.mobile-tools>div{position:absolute;z-index:9;top:calc(100% + 5px);right:0;display:grid;grid-template-columns:repeat(3,1fr);gap:5px;width:230px;padding:8px;border:2px solid #fff;border-radius:14px;background:#f6fbfc;box-shadow:0 14px 30px #184e6b33}.mobile-tools button{justify-content:center;padding:7px}.mobile-tools button span{display:none}}@media (max-width: 430px){.team-control>strong{min-width:48px;padding:8px;font-size:20px}.add-team-button{width:38px}.dify-v3 .classroom-bar{gap:5px}.dify-v3 .classroom-actions button:nth-child(4){display:none}}@media (prefers-reduced-motion: reduce){.typing-dots i,.composer-icon.is-recording,.avatar-image-wrap,.avatar-state-pill i{animation:none}.suggestion-grid button{transition:none}}[hidden]{display:none!important}button,select,input{font:inherit}button{border:0}.match-nav{position:absolute;z-index:5;top:9px;right:14px;left:14px;display:flex;align-items:center;justify-content:space-between;pointer-events:none}.match-nav>*{pointer-events:auto}.team-picker-wrap{display:flex;align-items:stretch;gap:8px;filter:drop-shadow(0 8px 12px rgb(28 91 129 / .14))}.team-picker{position:relative;display:grid;grid-template-columns:25px auto;grid-template-rows:17px 23px;column-gap:8px;align-items:center;min-width:205px;padding:7px 32px 7px 12px;border:2px solid rgb(255 255 255 / .9);border-radius:18px;background:#ffffffe6;box-shadow:inset 0 1px #fff}.team-picker:after{position:absolute;right:12px;bottom:13px;width:8px;height:8px;transform:rotate(45deg);border-right:2px solid #2b688e;border-bottom:2px solid #2b688e;content:"";pointer-events:none}.team-picker svg{grid-row:1 / 3;width:24px;color:#1d8c56;stroke:currentColor;stroke-width:2.1;stroke-linecap:round;stroke-linejoin:round}.picker-label{color:#668095;font-size:11px;font-weight:750}.team-picker select{width:100%;padding:0;border:0;outline:0;-webkit-appearance:none;-moz-appearance:none;appearance:none;background:transparent;color:#184d70;font-size:15px;font-weight:900;cursor:pointer}.team-picker:focus-within{outline:4px solid rgb(255 189 46 / .7);outline-offset:3px}.current-score{display:flex;align-items:baseline;justify-content:center;min-width:63px;padding:7px 10px;border:2px solid rgb(255 255 255 / .9);border-radius:18px 18px 9px;background:#ffd95c;color:#6a4800}.current-score strong{font-size:25px;font-variant-numeric:tabular-nums;line-height:1;animation:score-pop .24s ease-out}.current-score span{margin-left:2px;font-size:11px;font-weight:900}.icon-button{position:relative;display:grid;width:58px;height:58px;place-items:center;border:3px solid rgb(255 255 255 / .9);border-radius:50%;color:#fff;box-shadow:0 8px #1f526f24,0 12px 22px #1f526f29;cursor:pointer;transition:transform .18s ease,filter .18s ease,box-shadow .18s ease}.icon-button svg,.modal-close svg{width:27px;height:27px;stroke:currentColor;stroke-width:2.35;stroke-linecap:round;stroke-linejoin:round}.icon-button:hover:not(:disabled){transform:translateY(-3px) rotate(-3deg);filter:brightness(1.04) saturate(1.05);box-shadow:0 11px #1f526f1f,0 16px 26px #1f526f33}.icon-button:active:not(:disabled){transform:translateY(3px) scale(.97);box-shadow:0 3px #1f526f24,0 7px 14px #1f526f29}.icon-button:focus-visible,.modal-close:focus-visible,.text-button:focus-visible,.team-form input:focus-visible{outline:4px solid #ffbd2e;outline-offset:4px}.icon-button:disabled{opacity:.43;cursor:not-allowed;filter:grayscale(.25)}.icon-button:after{position:absolute;top:50%;left:calc(100% + 10px);padding:5px 8px;transform:translateY(-50%) translate(-4px);border-radius:8px;background:#173e59;color:#fff;content:attr(data-label);font-size:12px;font-weight:750;line-height:1;opacity:0;pointer-events:none;white-space:nowrap;transition:opacity .16s ease,transform .16s ease}.icon-button:hover:after,.icon-button:focus-visible:after{transform:translateY(-50%) translate(0);opacity:1}.tone-yellow{background:#f6bd2f;color:#6c4800}.tone-blue{background:#318ed7}.tone-green{background:#35a867}.tone-orange{background:#ed8b3f}.tone-red{background:#dc655e}.tool-rail{position:fixed;z-index:6;top:57%;display:flex;flex-direction:column;gap:16px;transform:translateY(-50%)}.tool-rail-left{left:max(14px,calc(50% - 680px))}.tool-rail-right{right:max(14px,calc(50% - 680px))}.tool-rail-right .icon-button:after{right:calc(100% + 10px);left:auto}.modal-backdrop{position:fixed;z-index:20;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;padding:18px;background:#12384e6b;-webkit-backdrop-filter:blur(7px);backdrop-filter:blur(7px);animation:fade-in .18s ease-out}.modal-card{position:relative;width:min(410px,100%);padding:30px 28px 27px;border:4px solid #fff;border-radius:28px 28px 16px;background:#fffaf0;box-shadow:0 28px 70px #10415e47,inset 0 0 0 2px #ffe59a;animation:modal-in .26s cubic-bezier(.2,.9,.25,1.2)}.modal-card h2{margin:0 42px 22px 0;color:#174b70;font-size:25px;letter-spacing:-.03em}.modal-close{position:absolute;top:18px;right:18px;display:grid;width:38px;height:38px;place-items:center;border-radius:50%;background:#e8f4f9;color:#37677e;cursor:pointer}.modal-close svg{width:20px;height:20px}.team-form{display:grid}.team-form label{margin-bottom:7px;color:#41687c;font-size:13px;font-weight:850}.team-form input{width:100%;padding:13px 15px;border:2px solid #bcd8e5;border-radius:13px;background:#fff;color:#173e59;font-size:16px;font-weight:700}.form-error{margin:8px 0 0;color:#c24843;font-size:13px;font-weight:750}.modal-copy{margin:15px 0 0;color:#537184;font-size:14px;line-height:1.6}.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:23px}.text-button{padding:11px 17px;border-radius:12px;font-size:14px;font-weight:850;cursor:pointer;transition:transform .16s ease,filter .16s ease}.text-button:hover{transform:translateY(-2px);filter:brightness(1.03)}.text-button:active{transform:translateY(1px)}.text-button.secondary{background:#e7f0f4;color:#426476}.text-button.primary{background:#26975a;color:#fff}.text-button.danger{background:#d95f58;color:#fff}.reset-team-badge{display:flex;align-items:center;justify-content:space-between;padding:14px 17px;border-radius:15px;background:#fff0ba;color:#735500}.reset-team-badge span{font-weight:850}.reset-team-badge strong{font-size:20px;font-variant-numeric:tabular-nums}.reward-celebration{position:fixed;z-index:30;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;overflow:hidden;padding:clamp(18px,4vw,44px);background:radial-gradient(circle at center,rgb(255 248 179 / .28),transparent 44%),#0b2a41b8;-webkit-backdrop-filter:blur(9px) saturate(1.12);backdrop-filter:blur(9px) saturate(1.12);pointer-events:none;animation:reward-overlay 2.4s ease-in-out both}.reward-glow{position:absolute;width:min(94vw,760px);aspect-ratio:1;border-radius:50%;background:repeating-conic-gradient(from 0deg,rgb(255 236 99 / .36) 0deg 8deg,transparent 8deg 18deg);filter:blur(1px);animation:reward-rays 5s linear infinite,reward-glow-in 2.4s ease-out both}.reward-glow:after{position:absolute;top:19%;right:19%;bottom:19%;left:19%;border-radius:50%;background:#ffee834d;box-shadow:0 0 90px 42px #ffda493d;content:""}.reward-card{position:relative;z-index:2;display:block;width:min(72vw,410px);max-height:min(76dvh,650px);clip-path:inset(1.8% 10% 1.5% 10% round 12%);object-fit:contain;animation:reward-card-reveal 2.4s cubic-bezier(.2,.88,.25,1) both}.reward-sparkles{position:absolute;z-index:3;top:0;right:0;bottom:0;left:0}.reward-sparkles i{position:absolute;top:50%;left:50%;width:13px;height:13px;border:3px solid #fff6a8;transform:translate(-50%,-50%) rotate(45deg);opacity:0;animation:reward-spark 1.35s calc(var(--delay) * 1ms) ease-out both}.reward-sparkles i:nth-child(1){--x: -250px;--y: -245px;--delay: 160}.reward-sparkles i:nth-child(2){--x: -155px;--y: -300px;--delay: 260}.reward-sparkles i:nth-child(3){--x: -55px;--y: -330px;--delay: 100}.reward-sparkles i:nth-child(4){--x: 75px;--y: -315px;--delay: 340}.reward-sparkles i:nth-child(5){--x: 180px;--y: -265px;--delay: 210}.reward-sparkles i:nth-child(6){--x: 250px;--y: -150px;--delay: 390}.reward-sparkles i:nth-child(7){--x: 265px;--y: 80px;--delay: 130}.reward-sparkles i:nth-child(8){--x: 190px;--y: 245px;--delay: 300}.reward-sparkles i:nth-child(9){--x: 65px;--y: 320px;--delay: 180}.reward-sparkles i:nth-child(10){--x: -80px;--y: 310px;--delay: 370}.reward-sparkles i:nth-child(11){--x: -210px;--y: 220px;--delay: 230}.reward-sparkles i:nth-child(12){--x: -265px;--y: 30px;--delay: 320}.confetti,.whistle-wave{position:fixed;z-index:12;top:0;right:0;bottom:0;left:0;overflow:hidden;pointer-events:none}.confetti i{position:absolute;top:-25px;left:50%;width:13px;height:22px;border-radius:3px;opacity:0}.confetti.is-active i{animation:confetti-fall 2.4s ease-out forwards}.confetti i:nth-child(4n+1){background:#ffd43b}.confetti i:nth-child(4n+2){background:#ef6a62}.confetti i:nth-child(4n+3){background:#38a96b}.confetti i:nth-child(4n){background:#328fd4}.confetti i:nth-child(1){--x: -43vw;--r: 160deg;animation-delay:.02s}.confetti i:nth-child(2){--x: -35vw;--r: -210deg;animation-delay:.1s}.confetti i:nth-child(3){--x: -28vw;--r: 250deg;animation-delay:.04s}.confetti i:nth-child(4){--x: -21vw;--r: -130deg;animation-delay:.16s}.confetti i:nth-child(5){--x: -14vw;--r: 310deg;animation-delay:.08s}.confetti i:nth-child(6){--x: -7vw;--r: -250deg;animation-delay:.18s}.confetti i:nth-child(7){--x: -2vw;--r: 190deg;animation-delay:.01s}.confetti i:nth-child(8){--x: 5vw;--r: -320deg;animation-delay:.13s}.confetti i:nth-child(9){--x: 12vw;--r: 220deg;animation-delay:.06s}.confetti i:nth-child(10){--x: 18vw;--r: -180deg;animation-delay:.2s}.confetti i:nth-child(11){--x: 24vw;--r: 290deg;animation-delay:.11s}.confetti i:nth-child(12){--x: 30vw;--r: -240deg;animation-delay:.03s}.confetti i:nth-child(13){--x: 36vw;--r: 140deg;animation-delay:.14s}.confetti i:nth-child(14){--x: 42vw;--r: -280deg;animation-delay:.07s}.confetti i:nth-child(15){--x: -47vw;--r: 340deg;animation-delay:.19s}.confetti i:nth-child(16){--x: 47vw;--r: -170deg;animation-delay:.12s}.whistle-wave:before,.whistle-wave:after{position:absolute;top:50%;left:50%;width:80px;height:80px;transform:translate(-50%,-50%) scale(.4);border:8px solid rgb(255 255 255 / .85);border-radius:50%;content:"";opacity:0}.whistle-wave.is-active:before{animation:wave-out .65s ease-out}.whistle-wave.is-active:after{animation:wave-out .65s .12s ease-out}.leaderboard-page{position:relative;min-height:100dvh;overflow:hidden;padding:28px clamp(18px,5vw,70px) 34px;background:radial-gradient(circle at 8% 12%,rgb(255 255 255 / .68) 0 4%,transparent 4.2%),radial-gradient(circle at 90% 8%,rgb(255 233 129 / .72) 0 7%,transparent 7.2%),linear-gradient(160deg,#77c9f2 0,#77c9f2 42%,#bfe9e1 67%,#88d15f);color:#153f61}.leaderboard-page:after{position:absolute;right:-5%;bottom:-145px;left:-5%;height:250px;border-radius:50% 50% 0 0;background:#55b95e;content:""}.leaderboard-pattern{position:absolute;top:0;right:0;bottom:0;left:0;opacity:.18;background-image:radial-gradient(circle,#fff 0 3px,transparent 3.5px);background-size:46px 46px;pointer-events:none}.leaderboard-header{position:relative;z-index:2;display:grid;grid-template-columns:70px 1fr 140px;align-items:center;width:min(1040px,100%);margin:0 auto 18px}.leaderboard-header>div{text-align:center}.leaderboard-header p{margin:0 0 2px;color:#1b7651;font-size:15px;font-weight:900;letter-spacing:.12em}.leaderboard-header h1{margin:0;color:#fff8e8;font-size:clamp(42px,6vw,72px);letter-spacing:-.065em;line-height:1;text-shadow:0 5px 0 #287fb0,0 13px 22px rgb(27 84 112 / .2)}.leaderboard-header img{justify-self:end;width:130px;height:150px;object-fit:contain;object-position:center 22%;filter:drop-shadow(0 12px 12px rgb(30 93 115 / .22))}.scoreboard{position:relative;z-index:2;display:grid;grid-template-columns:minmax(280px,.8fr) minmax(400px,1.2fr);gap:clamp(20px,4vw,55px);align-items:center;width:min(980px,100%);margin:0 auto}.champion-card{position:relative;display:flex;min-height:390px;overflow:hidden;flex-direction:column;align-items:center;justify-content:center;padding:62px 25px 28px;border:6px solid #fff4bd;border-radius:44px 44px 24px;background:radial-gradient(circle at 50% 20%,#fffce3 0,#fffce3 10%,#ffd85e 48%,#f3ad26);box-shadow:0 22px #a967092e,0 34px 50px #1d596b38,inset 0 2px #fff;color:#714700;transform:rotate(-1.5deg)}.champion-rays{position:absolute;top:-40%;right:-40%;bottom:-40%;left:-40%;background:repeating-conic-gradient(rgb(255 255 255 / .36) 0 8deg,transparent 8deg 18deg);animation:rays-turn 22s linear infinite}.crown{position:relative;z-index:1;width:115px;overflow:visible;fill:#fff15e;stroke:#b86b08;stroke-width:5;stroke-linejoin:round;filter:drop-shadow(0 7px 0 rgb(174 99 0 / .18));animation:crown-bob 2.5s ease-in-out infinite}.rank-label{position:relative;z-index:1;margin-top:4px;padding:6px 13px;border-radius:9px;background:#a96508;color:#fff7d4;font-size:13px;font-weight:900}.champion-card h2{position:relative;z-index:1;margin:15px 0 2px;font-size:clamp(30px,4vw,43px);letter-spacing:-.05em}.champion-card strong{position:relative;z-index:1;font-size:70px;font-variant-numeric:tabular-nums;line-height:1}.champion-card small,.rank-card small{margin-left:4px;font-size:16px}.champion-stars{position:relative;z-index:1;margin-top:16px;color:#fff9d9;font-size:20px;text-shadow:0 2px 0 #d28b0f}.ranking-list{display:grid;gap:13px;margin:0;padding:0;list-style:none}.rank-card{position:relative;display:grid;grid-template-columns:54px 38px 1fr auto;align-items:center;min-height:78px;padding:9px 18px 9px 11px;border:4px solid rgb(255 255 255 / .82);border-radius:22px 22px 12px;background:#ffffffe0;box-shadow:0 10px #215c6d1c,0 16px 28px #215c6d1f;animation:rank-enter .52s backwards}.rank-card:nth-child(2){animation-delay:80ms}.rank-card:nth-child(3){animation-delay:.16s}.rank-card:nth-child(4){animation-delay:.24s}.rank-number{display:grid;width:47px;height:47px;place-items:center;border-radius:50%;background:#63a9d5;color:#fff;font-size:22px;font-weight:950;box-shadow:inset 0 -4px #18537929}.rank-2 .rank-number{background:#a8b9c8}.rank-3 .rank-number{background:#d99154}.team-flag{width:25px;height:31px;transform:skewY(-7deg);border-radius:4px 7px 7px 3px;background:linear-gradient(90deg,#40a66b 0,#40a66b 50%,#ffd75d 50%);box-shadow:-4px 0 #2d6a52}.rank-card:nth-child(2) .team-flag{background:linear-gradient(90deg,#eb746b 0,#eb746b 50%,#ffe37a 50%)}.rank-card:nth-child(3) .team-flag{background:linear-gradient(90deg,#4e91d1 0,#4e91d1 50%,#a8e3f2 50%)}.rank-card:nth-child(4) .team-flag{background:linear-gradient(90deg,#9d7ac2 0,#9d7ac2 50%,#f1b2cc 50%)}.rank-card h2{margin:0 8px;color:#234f69;font-size:clamp(18px,2.2vw,25px);letter-spacing:-.025em}.rank-card strong{color:#195f84;font-size:34px;font-variant-numeric:tabular-nums}.leaderboard-note{position:relative;z-index:2;margin:25px auto 0;color:#17593d;font-size:15px;font-weight:850;text-align:center}@keyframes score-pop{50%{transform:scale(1.28) rotate(-4deg)}}@keyframes fade-in{0%{opacity:0}}@keyframes modal-in{0%{transform:translateY(18px) scale(.94);opacity:0}}@keyframes reward-overlay{0%{opacity:0}10%,82%{opacity:1}to{opacity:0}}@keyframes reward-card-reveal{0%{transform:translateY(42px) scale(.35) rotate(-12deg);opacity:0}18%{transform:translateY(-10px) scale(1.08) rotate(3deg);opacity:1}29%{transform:translateY(0) scale(.98) rotate(-1deg);opacity:1}39%,78%{transform:translateY(0) scale(1) rotate(0);opacity:1}to{transform:translateY(-20px) scale(.88) rotate(2deg);opacity:0}}@keyframes reward-rays{to{transform:rotate(360deg)}}@keyframes reward-glow-in{0%{transform:scale(.4);opacity:0}22%,78%{transform:scale(1);opacity:1}to{transform:scale(1.18);opacity:0}}@keyframes reward-spark{0%{transform:translate(-50%,-50%) scale(0) rotate(45deg);opacity:0}22%{opacity:1}68%{opacity:1}to{transform:translate(calc(-50% + var(--x)),calc(-50% + var(--y))) scale(1.15) rotate(225deg);opacity:0}}@keyframes confetti-fall{0%{transform:translate3d(0,-20px,0) rotate(0);opacity:1}68%{transform:translate3d(var(--x),86vh,0) rotate(var(--r));opacity:1}to{transform:translate3d(var(--x),95vh,0) rotate(var(--r));opacity:0}}@keyframes wave-out{0%{transform:translate(-50%,-50%) scale(.4);opacity:.8}to{transform:translate(-50%,-50%) scale(12);opacity:0}}@keyframes rays-turn{to{transform:rotate(360deg)}}@keyframes crown-bob{50%{transform:translateY(-7px) rotate(3deg)}}@keyframes rank-enter{0%{transform:translate(35px);opacity:0}}@media (min-width: 1101px) and (max-width: 1390px){.app-shell{width:calc(100% - 150px)}}@media (min-width: 1101px){.brand-stage{min-height:220px}.team-picker-wrap{transform:translate(clamp(-150px,calc((1180px - 100vw)/2),-44px))}.brand-copy{transform:translateY(32px)}.teacher-note{transform:translate(clamp(24px,calc((100vw - 1180px)/4),96px))}.chat-card{height:clamp(500px,calc(100dvh - 250px),650px)}}@media (min-width: 1101px) and (max-height: 760px){.brand-stage{min-height:205px}h1{font-size:52px}.chat-card{height:clamp(500px,calc(100dvh - 220px),650px)}}@media (max-width: 1100px){.tool-rail{top:auto;bottom:18px;flex-direction:row;transform:none}.tool-rail-left{left:18px}.tool-rail-right{right:18px}.tool-rail .icon-button:after{display:none}.playground{padding-bottom:83px}}@media (max-width: 800px){.match-nav{position:relative;top:auto;right:auto;left:auto;padding:0 5px 8px}.match-nav .icon-button{width:52px;height:52px}.team-picker{min-width:178px;padding-left:9px}.current-score{min-width:54px}.current-score strong{font-size:22px}.tool-rail{bottom:10px;gap:8px}.tool-rail-left{left:10px}.tool-rail-right{right:10px}.tool-rail .icon-button{width:50px;height:50px;border-width:2px}.tool-rail .icon-button svg{width:23px;height:23px}.leaderboard-page{padding:18px 12px 32px;overflow:auto}.leaderboard-header{grid-template-columns:54px 1fr 76px;margin-bottom:16px}.leaderboard-header .icon-button{width:50px;height:50px}.leaderboard-header h1{font-size:clamp(34px,9vw,48px)}.leaderboard-header p{font-size:11px}.leaderboard-header img{width:75px;height:92px}.scoreboard{grid-template-columns:1fr;gap:25px;width:min(540px,100%)}.champion-card{min-height:315px;padding-top:42px}.crown{width:92px}.champion-card strong{font-size:58px}}@media (max-width: 520px){.team-picker-wrap{gap:5px}.team-picker{grid-template-columns:21px auto;min-width:148px;padding-right:25px;column-gap:5px}.team-picker svg{width:20px}.team-picker:after{right:9px}.picker-label{font-size:10px}.team-picker select{font-size:13px}.current-score{min-width:48px;padding-right:7px;padding-left:7px}.tool-rail .icon-button{width:46px;height:46px}.rank-card{grid-template-columns:48px 28px 1fr auto;min-height:70px;padding-right:12px}.rank-number{width:42px;height:42px;font-size:19px}.team-flag{width:20px;height:27px}.rank-card h2{font-size:17px}.rank-card strong{font-size:28px}}@media (prefers-reduced-motion: reduce){.current-score strong,.modal-backdrop,.modal-card,.confetti.is-active i,.whistle-wave.is-active:before,.whistle-wave.is-active:after,.reward-celebration,.reward-glow,.reward-card,.reward-sparkles i,.champion-rays,.crown,.rank-card{animation:none}.reward-celebration{opacity:1}}