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var(--tw-animation-duration,var(--tw-duration,.15s))var(--tw-ease,ease)var(--tw-animation-delay,0s)var(--tw-animation-iteration-count,1)var(--tw-animation-direction,normal)var(--tw-animation-fill-mode,none)}.data-closed\:fade-out-0:where([data-state=closed]),.data-closed\:fade-out-0:where([data-closed]:not([data-closed=false])){--tw-exit-opacity:0}.data-closed\:zoom-out-95:where([data-state=closed]),.data-closed\:zoom-out-95:where([data-closed]:not([data-closed=false])){--tw-exit-scale:.95}.data-checked\:bg-primary:where([data-state=checked]),.data-checked\:bg-primary:where([data-checked]:not([data-checked=false])){background-color:var(--primary)}.group-data-\[size\=default\]\/switch\:data-checked\:translate-x-\[calc\(100\%-2px\)\]:is(:where(.group\/switch)[data-size=default] *):where([data-state=checked]),.group-data-\[size\=default\]\/switch\:data-checked\:translate-x-\[calc\(100\%-2px\)\]:is(:where(.group\/switch)[data-size=default] *):where([data-checked]:not([data-checked=false])),.group-data-\[size\=sm\]\/switch\:data-checked\:translate-x-\[calc\(100\%-2px\)\]:is(:where(.group\/switch)[data-size=sm] *):where([data-state=checked]),.group-data-\[size\=sm\]\/switch\:data-checked\:translate-x-\[calc\(100\%-2px\)\]:is(:where(.group\/switch)[data-size=sm] *):where([data-checked]:not([data-checked=false])){--tw-translate-x:calc(100% - 2px);translate:var(--tw-translate-x) var(--tw-translate-y)}.dark\:data-checked\:bg-primary-foreground:is(.dark *):where([data-state=checked]),.dark\:data-checked\:bg-primary-foreground:is(.dark *):where([data-checked]:not([data-checked=false])){background-color:var(--primary-foreground)}.data-unchecked\:bg-input:where([data-state=unchecked]),.data-unchecked\:bg-input:where([data-unchecked]:not([data-unchecked=false])){background-color:var(--input)}.group-data-\[size\=default\]\/switch\:data-unchecked\:translate-x-0:is(:where(.group\/switch)[data-size=default] *):where([data-state=unchecked]),.group-data-\[size\=default\]\/switch\:data-unchecked\:translate-x-0:is(:where(.group\/switch)[data-size=default] *):where([data-unchecked]:not([data-unchecked=false])),.group-data-\[size\=sm\]\/switch\:data-unchecked\:translate-x-0:is(:where(.group\/switch)[data-size=sm] *):where([data-state=unchecked]),.group-data-\[size\=sm\]\/switch\:data-unchecked\:translate-x-0:is(:where(.group\/switch)[data-size=sm] *):where([data-unchecked]:not([data-unchecked=false])){--tw-translate-x:calc(var(--spacing) * 0);translate:var(--tw-translate-x) var(--tw-translate-y)}.dark\:data-unchecked\:bg-foreground:is(.dark *):where([data-state=unchecked]),.dark\:data-unchecked\:bg-foreground:is(.dark *):where([data-unchecked]:not([data-unchecked=false])){background-color:var(--foreground)}.dark\:data-unchecked\:bg-input\/80:is(.dark *):where([data-state=unchecked]),.dark\:data-unchecked\:bg-input\/80:is(.dark *):where([data-unchecked]:not([data-unchecked=false])){background-color:var(--input)}@supports (color:color-mix(in lab, red, red)){.dark\:data-unchecked\:bg-input\/80:is(.dark *):where([data-state=unchecked]),.dark\:data-unchecked\:bg-input\/80:is(.dark *):where([data-unchecked]:not([data-unchecked=false])){background-color:color-mix(in oklab, var(--input) 80%, transparent)}}.data-disabled\:cursor-not-allowed:where([data-disabled=true]),.data-disabled\:cursor-not-allowed:where([data-disabled]:not([data-disabled=false])){cursor:not-allowed}.data-disabled\:opacity-50:where([data-disabled=true]),.data-disabled\:opacity-50:where([data-disabled]:not([data-disabled=false])){opacity:.5}.data-horizontal\:h-1:where([data-orientation=horizontal]){height:calc(var(--spacing) * 1)}.data-horizontal\:h-full:where([data-orientation=horizontal]){height:100%}.data-horizontal\:w-full:where([data-orientation=horizontal]){width:100%}.data-vertical\:h-full:where([data-orientation=vertical]){height:100%}.data-vertical\:min-h-40:where([data-orientation=vertical]){min-height:calc(var(--spacing) * 40)}.data-vertical\:w-1:where([data-orientation=vertical]){width:calc(var(--spacing) * 1)}.data-vertical\:w-auto:where([data-orientation=vertical]){width:auto}.data-vertical\:w-full:where([data-orientation=vertical]){width:100%}.data-vertical\:flex-col:where([data-orientation=vertical]){flex-direction:column}.\[\&_svg\]\:pointer-events-none svg{pointer-events:none}.\[\&_svg\]\:shrink-0 svg{flex-shrink:0}.\[\&_svg\:not\(\[class\*\=\'size-\'\]\)\]\:size-3 svg:not([class*=size-]){width:calc(var(--spacing) * 3);height:calc(var(--spacing) * 3)}.\[\&_svg\:not\(\[class\*\=\'size-\'\]\)\]\:size-3\.5 svg:not([class*=size-]){width:calc(var(--spacing) * 3.5);height:calc(var(--spacing) * 3.5)}.\[\&_svg\:not\(\[class\*\=\'size-\'\]\)\]\:size-4 svg:not([class*=size-]){width:calc(var(--spacing) * 4);height:calc(var(--spacing) * 4)}:is(.\*\:\[a\]\:underline>*):is(a){text-decoration-line:underline}:is(.\*\:\[a\]\:underline-offset-3>*):is(a){text-underline-offset:3px}@media (hover:hover){:is(.\*\:\[a\]\:hover\:text-foreground>*):is(a):hover{color:var(--foreground)}}.\[\&\[data-ending-style\]\:not\(\[data-limited\]\)\:not\(\[data-swipe-direction\]\)\]\:\[transform\:translateY\(150\%\)\][data-ending-style]:not([data-limited]):not([data-swipe-direction]){transform:translateY(150%)}}@property --tw-animation-delay{syntax:"*";inherits:false;initial-value:0s}@property --tw-animation-direction{syntax:"*";inherits:false;initial-value:normal}@property --tw-animation-duration{syntax:"*";inherits:false}@property --tw-animation-fill-mode{syntax:"*";inherits:false;initial-value:none}@property --tw-animation-iteration-count{syntax:"*";inherits:false;initial-value:1}@property --tw-enter-blur{syntax:"*";inherits:false;initial-value:0}@property --tw-enter-opacity{syntax:"*";inherits:false;initial-value:1}@property --tw-enter-rotate{syntax:"*";inherits:false;initial-value:0}@property --tw-enter-scale{syntax:"*";inherits:false;initial-value:1}@property --tw-enter-translate-x{syntax:"*";inherits:false;initial-value:0}@property --tw-enter-translate-y{syntax:"*";inherits:false;initial-value:0}@property --tw-exit-blur{syntax:"*";inherits:false;initial-value:0}@property --tw-exit-opacity{syntax:"*";inherits:false;initial-value:1}@property --tw-exit-rotate{syntax:"*";inherits:false;initial-value:0}@property --tw-exit-scale{syntax:"*";inherits:false;initial-value:1}@property --tw-exit-translate-x{syntax:"*";inherits:false;initial-value:0}@property --tw-exit-translate-y{syntax:"*";inherits:false;initial-value:0}@property --scroll-fade-t{syntax:"<length-percentage>";inherits:false;initial-value:0}@property --scroll-fade-b{syntax:"<length-percentage>";inherits:false;initial-value:0}@property --scroll-fade-s{syntax:"<length-percentage>";inherits:false;initial-value:0}@property --scroll-fade-e{syntax:"<length-percentage>";inherits:false;initial-value:0}@property --scroll-fade-mask{syntax:"*";inherits:false}@property --shimmer-angle{syntax:"<angle>";inherits:true;initial-value:20deg}@property --shimmer-image{syntax:"*";inherits:false}@property --shimmer-text-fill{syntax:"*";inherits:false}@media (prefers-reduced-motion:reduce){.shimmer{-webkit-text-fill-color:currentColor;background-image:none;animation:none}}body{font-family:var(--font-geist-sans), "Microsoft YaHei", Arial, Helvetica, sans-serif}:root{--background:oklch(96.7% .012 166);--foreground:oklch(25% .035 168);--card:oklch(100% 0 0);--card-foreground:oklch(14.5% 0 0);--popover:oklch(100% 0 0);--popover-foreground:oklch(14.5% 0 0);--primary:oklch(50% .105 172);--primary-foreground:oklch(98.5% 0 0);--secondary:oklch(95% .025 168);--secondary-foreground:oklch(20.5% 0 0);--muted:oklch(95% .012 168);--muted-foreground:oklch(53% .035 168);--accent:oklch(90% .12 120);--accent-foreground:oklch(20.5% 0 0);--destructive:oklch(57.7% .245 27.325);--border:oklch(90% .018 168);--input:oklch(90% .018 168);--ring:oklch(61% .11 168);--chart-1:oklch(87% 0 0);--chart-2:oklch(55.6% 0 0);--chart-3:oklch(43.9% 0 0);--chart-4:oklch(37.1% 0 0);--chart-5:oklch(26.9% 0 0);--radius:.9rem;--sidebar:oklch(98.5% 0 0);--sidebar-foreground:oklch(14.5% 0 0);--sidebar-primary:oklch(20.5% 0 0);--sidebar-primary-foreground:oklch(98.5% 0 0);--sidebar-accent:oklch(97% 0 0);--sidebar-accent-foreground:oklch(20.5% 0 0);--sidebar-border:oklch(92.2% 0 0);--sidebar-ring:oklch(70.8% 0 0)}.dark{--background:oklch(14.5% 0 0);--foreground:oklch(98.5% 0 0);--card:oklch(20.5% 0 0);--card-foreground:oklch(98.5% 0 0);--popover:oklch(20.5% 0 0);--popover-foreground:oklch(98.5% 0 0);--primary:oklch(92.2% 0 0);--primary-foreground:oklch(20.5% 0 0);--secondary:oklch(26.9% 0 0);--secondary-foreground:oklch(98.5% 0 0);--muted:oklch(26.9% 0 0);--muted-foreground:oklch(70.8% 0 0);--accent:oklch(26.9% 0 0);--accent-foreground:oklch(98.5% 0 0);--destructive:oklch(70.4% .191 22.216);--border:oklch(100% 0 0/.1);--input:oklch(100% 0 0/.15);--ring:oklch(55.6% 0 0);--chart-1:oklch(87% 0 0);--chart-2:oklch(55.6% 0 0);--chart-3:oklch(43.9% 0 0);--chart-4:oklch(37.1% 0 0);--chart-5:oklch(26.9% 0 0);--sidebar:oklch(20.5% 0 0);--sidebar-foreground:oklch(98.5% 0 0);--sidebar-primary:oklch(48.8% .243 264.376);--sidebar-primary-foreground:oklch(98.5% 0 0);--sidebar-accent:oklch(26.9% 0 0);--sidebar-accent-foreground:oklch(98.5% 0 0);--sidebar-border:oklch(100% 0 0/.1);--sidebar-ring:oklch(55.6% 0 0)}@property --tw-translate-x{syntax:"*";inherits:false;initial-value:0}@property --tw-translate-y{syntax:"*";inherits:false;initial-value:0}@property --tw-translate-z{syntax:"*";inherits:false;initial-value:0}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-leading{syntax:"*";inherits:false}@property --tw-font-weight{syntax:"*";inherits:false}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property --tw-duration{syntax:"*";inherits:false}@property --tw-ease{syntax:"*";inherits:false}@property --tw-content{syntax:"*";inherits:false;initial-value:""}@property --tw-backdrop-blur{syntax:"*";inherits:false}@property --tw-backdrop-brightness{syntax:"*";inherits:false}@property --tw-backdrop-contrast{syntax:"*";inherits:false}@property --tw-backdrop-grayscale{syntax:"*";inherits:false}@property --tw-backdrop-hue-rotate{syntax:"*";inherits:false}@property --tw-backdrop-invert{syntax:"*";inherits:false}@property --tw-backdrop-opacity{syntax:"*";inherits:false}@property --tw-backdrop-saturate{syntax:"*";inherits:false}@property --tw-backdrop-sepia{syntax:"*";inherits:false}@keyframes spin{to{transform:rotate(360deg)}}@keyframes enter{0%{opacity:var(--tw-enter-opacity,1);transform:translate3d(var(--tw-enter-translate-x,0),var(--tw-enter-translate-y,0),0)scale3d(var(--tw-enter-scale,1),var(--tw-enter-scale,1),var(--tw-enter-scale,1))rotate(var(--tw-enter-rotate,0));filter:blur(var(--tw-enter-blur,0))}}@keyframes exit{to{opacity:var(--tw-exit-opacity,1);transform:translate3d(var(--tw-exit-translate-x,0),var(--tw-exit-translate-y,0),0)scale3d(var(--tw-exit-scale,1),var(--tw-exit-scale,1),var(--tw-exit-scale,1))rotate(var(--tw-exit-rotate,0));filter:blur(var(--tw-exit-blur,0))}}.sc-home-view,.sc-prepare-view,.sc-classroom-host,.sc-classroom-backdrop,.sc-desktop-simulation,.sc-material-dialog,.sc-timer-dialog{--sc-panel-radius:20px;--sc-control-radius:12px;--sc-panel-shadow:0 12px 36px #08393324;--sc-deep:#073d38;--sc-green:#168b7b;--sc-green-dark:#0a685d;--sc-lime:#b9dc5c;--sc-yellow:#ffca4f;--sc-blue:#2589f4;--sc-ink:#173f3a;--sc-muted:#526e65;--sc-line:#dce7e3;font-family:Microsoft YaHei,PingFang SC,Noto Sans 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3.2vw;display:flex}.sc-brand{align-items:center;gap:12px;display:flex}.sc-brand>span{width:46px;height:46px;color:var(--sc-deep);background:var(--sc-yellow);border-radius:16px;place-items:center;display:grid;box-shadow:0 8px 24px #ffca4f2e}.sc-brand svg{width:23px}.sc-brand b{font-size:18px;display:block}.sc-brand small{color:#ffffff8f;margin-top:2px;font-size:11px;display:block}.sc-school-chip{color:#ffffffdb;background:#ffffff17;border:1px solid #ffffff1f;border-radius:999px;align-items:center;gap:8px;padding:10px 16px;font-size:13px;display:inline-flex}.sc-school-chip svg{width:17px}.sc-prepare-view{color:#fff;background:radial-gradient(circle at 80% 20%,#30968761,#0000 32%),#062f2b;min-height:100dvh;padding-bottom:40px}.sc-prepare-view>header{border-bottom:1px solid #ffffff14;justify-content:space-between;align-items:center;height:72px;padding:0 4vw;display:flex}.sc-prepare-view>header button{color:#ffffffc2;cursor:pointer;background:0 0;border:0;align-items:center;gap:6px;display:inline-flex}.sc-prepare-view>header button:hover{color:#fff}.sc-prepare-view>header button svg{width:18px}.sc-prepare-view>header span{color:#ffffff7a;font-size:13px}.sc-prepare-player{background:#0b4942;border:1px solid #ffffff14;border-radius:32px;width:min(1180px,100vw - 48px);margin:38px auto 0;overflow:hidden;box-shadow:0 40px 100px #0000003d}.sc-video-stage{aspect-ratio:16/8.2;position:relative;overflow:hidden}.sc-video-stage>img{object-fit:cover;width:100%;height:100%}.sc-video-player{object-fit:cover;width:100%;height:100%;accent-color:var(--sc-lime);background:#031f1c;display:block}.sc-media-empty{z-index:3;color:#fff;text-align:center;background:radial-gradient(circle at 72% 24%,#26a5927a,#0000 36%),linear-gradient(135deg,#073d38,#0b5950);flex-direction:column;justify-content:center;align-items:center;padding:clamp(24px,5vw,64px);display:flex;position:absolute;inset:0}.sc-media-empty svg{width:48px;height:48px;color:var(--sc-lime);margin:0 auto 18px}.sc-media-empty b{font-size:clamp(22px,3vw,34px);display:block}.sc-media-empty span{color:#ffffffad;max-width:520px;margin:12px 0 0;line-height:1.75}.sc-media-status{color:#ffffffd1;letter-spacing:.04em;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#031f1c7a;border:1px solid #ffffff29;border-radius:999px;align-items:center;gap:7px;margin-top:18px;padding:7px 11px;font-size:11px;font-weight:800;display:inline-flex}.sc-media-status:before{background:var(--sc-yellow);content:"";border-radius:50%;width:7px;height:7px;box-shadow:0 0 0 4px #ffca4f1f}.sc-video-shade{pointer-events:none;background:linear-gradient(90deg,#022723bf,#0227231a 65%);position:absolute;inset:0}.sc-video-copy{pointer-events:none;max-width:470px;position:absolute;top:50%;left:6%;transform:translateY(-50%)}.sc-video-copy span{color:#c4ef88;letter-spacing:.14em;font-size:12px;font-weight:800}.sc-video-copy h1{margin:14px 0 0;font-size:clamp(38px,5vw,65px);line-height:1.05}.sc-video-copy p{color:#ffffffb3;margin:18px 0 0;font-size:15px;line-height:1.8}.sc-video-play{width:96px;height:96px;color:var(--sc-green-dark);cursor:pointer;background:#fffffff0;border:0;border-radius:50%;place-items:center;display:grid;position:absolute;top:50%;right:8%;transform:translateY(-50%);box-shadow:0 18px 55px #0000003d}.sc-video-play svg{fill:currentColor;width:37px;height:37px}.sc-player-controls{color:#ffffffb8;background:#073a35;align-items:center;gap:15px;height:64px;padding:0 22px;display:flex}.sc-player-controls button{color:#fff;cursor:pointer;background:#ffffff14;border:0;border-radius:10px;place-items:center;width:34px;height:34px;display:grid}.sc-player-controls button svg{width:17px}.sc-progress-track{background:#ffffff1f;border-radius:999px;flex:1;height:5px;position:relative;overflow:hidden}.sc-progress-track 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