.tutu-walking-lane{position:fixed;inset-inline:0;bottom:max(12px,env(safe-area-inset-bottom));height:96px;z-index:110;pointer-events:none;overflow:hidden}.tutu-walking-ground{position:absolute;left:0;right:0;bottom:7px;height:1px;background:linear-gradient(90deg,transparent,#337a6517 12%,#337a6517 88%,transparent)}.tutu-walking-actor{position:absolute;bottom:0;left:0;display:block;width:96px;height:96px;mix-blend-mode:multiply;will-change:transform}.tutu-walking-actor svg{display:block;width:100%;height:100%;overflow:visible}@media(max-width:600px){.tutu-walking-lane{height:82px;bottom:max(8px,env(safe-area-inset-bottom))}.tutu-walking-actor{width:82px;height:82px}}@media(prefers-reduced-motion:reduce){.tutu-walking-actor{will-change:auto}}.tutu-walking-lane{z-index:310}.tutu-walking-actor{transform-origin:50% 100%;mix-blend-mode:normal}.tutu-walking-lane{bottom:max(18px,env(safe-area-inset-bottom))}@media(max-width:600px){.tutu-walking-lane{bottom:max(18px,env(safe-area-inset-bottom))}}.st-scope{font:14px Microsoft YaHei,sans-serif;color:#273d32}.st-scope button{font:inherit;color:inherit;cursor:pointer;border:1px solid #d4decf;border-radius:10px;background:#f4f7ee;padding:8px 10px}.st-scope button:disabled{opacity:.5;cursor:default}.st-launcher{position:fixed;right:20px;bottom:16px;z-index:2147482000;background:transparent!important;border:0!important;display:flex;align-items:end;gap:6px;max-width:200px}.st-launcher img{width:82px;height:92px;object-fit:contain}.st-launcher span{background:#355943;color:#fff;padding:9px;border-radius:12px;white-space:nowrap}.st-launcher .resting{width:105px;animation:st-breathe 4s ease-in-out infinite}.st-launcher .speaking{animation:st-talk 1.8s ease-in-out infinite}.st-panel{position:fixed;right:20px;bottom:128px;width:min(365px,calc(100vw - 32px));max-height:calc(100dvh - 160px);overflow:auto;z-index:2147482001;background:#fffef8;border:1px solid #d7dfcd;border-radius:20px;box-shadow:0 12px 45px #203c3529;padding:16px}.st-panel header{display:flex;justify-content:space-between;align-items:center}.st-panel header button{border:0;background:none}.st-panel p{line-height:1.8;margin:10px 0}.st-answer{background:#eef4e5;padding:13px;border-radius:12px}.st-row{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0}.st-panel input{width:100%;padding:10px;border:1px solid #ccd9c5;border-radius:10px;font:inherit}.st-panel small{font-size:11px;color:#71816c}.st-question{display:block;width:100%;text-align:left;margin:6px 0}.st-panel details{margin:12px 0}.st-highlight{position:fixed;outline:3px solid #e1b743;border-radius:10px;box-shadow:0 0 0 5px #ffdb7044;pointer-events:none;z-index:2147481999}@keyframes st-talk{50%{transform:translateY(-2px)}}@keyframes st-breathe{50%{transform:scaleY(1.015)}}@media(prefers-reduced-motion:reduce){.st-scope *{animation:none!important}}html.tz-scholar-teacher-ready .tutu-walking-actor{pointer-events:auto;cursor:pointer}html.tz-scholar-teacher-ready .tutu-walking-actor:focus-visible{outline:2px solid #e1b743;border-radius:50%}html.tz-scholar-teacher-ready .tutu-walking-lane{display:none!important}html.tz-scholar-teacher-ready .st-walker-host .tutu-walking-lane{display:block!important}.st-walker-rest-image{display:none;position:absolute;inset:0;width:100%;height:100%;object-fit:contain;pointer-events:none}.st-walker-resting>svg{display:none!important}.st-walker-resting>.st-walker-rest-image{display:block;animation:st-rest-breathe 4s ease-in-out infinite}@keyframes st-rest-breathe{50%{transform:translateY(-1px)}}.st-caption{position:fixed;max-width:280px;text-align:center;font:15px/1.6 Microsoft YaHei,sans-serif;color:#244b40;text-shadow:0 1px 3px #fff,0 0 6px #fff;z-index:2147482001;pointer-events:none}.st-caption.st-listening{color:#08795e}.st-caption.st-error{color:#8e4b21}html.tz-scholar-teacher-ready .tutu-feedback-entry{display:flex!important;left:75px!important;right:auto!important;bottom:max(26px,env(safe-area-inset-bottom))!important;z-index:400}.st-walker-host .st-front-pose{display:none}.st-walker-host [data-talking="1"]>svg:not(.st-front-pose),.st-walker-host [data-talking="1"]>.st-walker-rest-image{display:none!important}.st-walker-host [data-talking="1"]>.st-front-pose{display:block!important}.st-walker-host [data-talking="1"] .st-wave-hand{transform-origin:800px 810px;animation:st-wave 1.6s ease-in-out 1}@keyframes st-wave{0%,to{transform:rotate(0)}25%,65%{transform:rotate(-9deg)}45%,85%{transform:rotate(7deg)}}html.tz-scholar-teacher-ready .tutu-launcher{display:flex!important;z-index:400}html.tz-scholar-teacher-ready .tutu-overlay-host:has(.st-walker-host){z-index:999}.st-help{position:fixed;right:20px;bottom:140px;width:min(430px,calc(100vw - 32px));pointer-events:auto;z-index:2147482000;display:grid;gap:10px}.st-help-tabs,.st-help-questions,.st-help-actions{display:flex;flex-wrap:wrap;gap:6px}.st-help button{background:#fffef3ed;box-shadow:0 2px 8px #173c2420;font-size:13px}.st-help button[aria-pressed=true]{background:#245e4b;color:#fff}.st-help-actions button{font-size:12px}.st-caption{max-width:340px}.st-walker-host .tutu-walking-actor{touch-action:none;user-select:none;-webkit-user-select:none;cursor:grab}.st-walker-host .tutu-walking-actor[data-dragging="1"]{cursor:grabbing}html.tz-scholar-teacher-ready .portal-space-scholar,html.tz-scholar-teacher-ready .portal-space-helmet{visibility:hidden!important}.st-help{max-height:calc(100dvh - 170px);overflow:auto}.st-help-answer{background:#fffdf4f5;padding:12px;border-radius:10px;line-height:1.7;white-space:pre-wrap}.st-help-input{display:flex;gap:6px}.st-help-input input{min-width:0;flex:1;padding:10px;border:1px solid #bdcfc4;border-radius:10px;font:inherit;background:#fff;color:#244b40}.st-caption.st-thought{width:180px;box-sizing:border-box;min-width:100px;max-width:200px;min-height:48px;padding:10px 20px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:#fffff6f5;border:1px solid #d3dfcb;color:#315742;font-size:15px;line-height:1.5;text-shadow:none;box-shadow:0 3px 12px #365b3b16;transform:translateY(-22px);transition:width .15s ease}.st-thought:before,.st-thought:after{content:"";position:absolute;border-radius:50%;background:#fffff6;border:1px solid #d3dfcb;pointer-events:none}.st-thought:before{width:12px;height:10px;bottom:-10px;left:58%}.st-thought:after{width:6px;height:6px;bottom:-19px;left:54%}