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--color-teal-100: oklch(95.3% .051 180.801); --color-teal-200: oklch(91% .096 180.426); --color-teal-300: oklch(85.5% .138 181.071); --color-teal-400: oklch(77.7% .152 181.912); --color-teal-500: oklch(70.4% .14 182.503); --color-teal-600: oklch(60% .118 184.704); --color-teal-700: oklch(51.1% .096 186.391); --color-teal-800: oklch(43.7% .078 188.216); --color-teal-900: oklch(38.6% .063 188.416); --color-teal-950: oklch(27.7% .046 192.524); --color-cyan-50: oklch(98.4% .019 200.873); --color-cyan-100: oklch(95.6% .045 203.388); --color-cyan-200: oklch(91.7% .08 205.041); --color-cyan-300: oklch(86.5% .127 207.078); --color-cyan-400: oklch(78.9% .154 211.53); --color-cyan-500: oklch(71.5% .143 215.221); --color-cyan-600: oklch(60.9% .126 221.723); --color-cyan-700: oklch(52% .105 223.128); --color-cyan-800: oklch(45% .085 224.283); --color-cyan-900: oklch(39.8% .07 227.392); --color-cyan-950: oklch(30.2% .056 229.695); --color-sky-50: oklch(97.7% .013 236.62); --color-sky-100: oklch(95.1% .026 236.824); --color-sky-200: oklch(90.1% .058 230.902); --color-sky-300: oklch(82.8% .111 230.318); --color-sky-400: oklch(74.6% .16 232.661); --color-sky-500: oklch(68.5% .169 237.323); --color-sky-600: oklch(58.8% .158 241.966); --color-sky-700: oklch(50% .134 242.749); --color-sky-800: oklch(44.3% .11 240.79); --color-sky-900: oklch(39.1% .09 240.876); --color-sky-950: oklch(29.3% .066 243.157); --color-blue-50: oklch(97% .014 254.604); --color-blue-100: oklch(93.2% .032 255.585); --color-blue-200: oklch(88.2% .059 254.128); --color-blue-300: oklch(80.9% .105 251.813); --color-blue-400: oklch(70.7% .165 254.624); --color-blue-500: oklch(62.3% .214 259.815); --color-blue-600: oklch(54.6% .245 262.881); --color-blue-700: oklch(48.8% .243 264.376); --color-blue-800: oklch(42.4% .199 265.638); --color-blue-900: oklch(37.9% .146 265.522); --color-blue-950: oklch(28.2% .091 267.935); --color-indigo-50: oklch(96.2% .018 272.314); --color-indigo-100: oklch(93% .034 272.788); --color-indigo-200: oklch(87% .065 274.039); --color-indigo-300: oklch(78.5% .115 274.713); --color-indigo-400: oklch(67.3% .182 276.935); --color-indigo-500: oklch(58.5% .233 277.117); --color-indigo-600: oklch(51.1% .262 276.966); --color-indigo-700: oklch(45.7% .24 277.023); --color-indigo-800: oklch(39.8% .195 277.366); --color-indigo-900: oklch(35.9% .144 278.697); --color-indigo-950: oklch(25.7% .09 281.288); --color-violet-50: oklch(96.9% .016 293.756); --color-violet-100: oklch(94.3% .029 294.588); --color-violet-200: oklch(89.4% .057 293.283); --color-violet-300: oklch(81.1% .111 293.571); --color-violet-400: oklch(70.2% .183 293.541); --color-violet-500: oklch(60.6% .25 292.717); --color-violet-600: oklch(54.1% .281 293.009); --color-violet-700: oklch(49.1% .27 292.581); --color-violet-800: oklch(43.2% .232 292.759); --color-violet-900: oklch(38% .189 293.745); --color-violet-950: oklch(28.3% .141 291.089); --color-purple-50: oklch(97.7% .014 308.299); --color-purple-100: oklch(94.6% .033 307.174); --color-purple-200: oklch(90.2% .063 306.703); --color-purple-300: oklch(82.7% .119 306.383); --color-purple-400: oklch(71.4% .203 305.504); --color-purple-500: oklch(62.7% .265 303.9); --color-purple-600: oklch(55.8% .288 302.321); --color-purple-700: oklch(49.6% .265 301.924); --color-purple-800: oklch(43.8% .218 303.724); --color-purple-900: oklch(38.1% .176 304.987); --color-purple-950: oklch(29.1% .149 302.717); --color-fuchsia-50: oklch(97.7% .017 320.058); --color-fuchsia-100: oklch(95.2% .037 318.852); --color-fuchsia-200: oklch(90.3% .076 319.62); --color-fuchsia-300: oklch(83.3% .145 321.434); --color-fuchsia-400: oklch(74% .238 322.16); --color-fuchsia-500: oklch(66.7% .295 322.15); --color-fuchsia-600: oklch(59.1% .293 322.896); --color-fuchsia-700: oklch(51.8% .253 323.949); --color-fuchsia-800: oklch(45.2% .211 324.591); --color-fuchsia-900: oklch(40.1% .17 325.612); --color-fuchsia-950: oklch(29.3% .136 325.661); --color-pink-50: oklch(97.1% .014 343.198); --color-pink-100: oklch(94.8% .028 342.258); --color-pink-200: oklch(89.9% .061 343.231); --color-pink-300: oklch(82.3% .12 346.018); --color-pink-400: oklch(71.8% .202 349.761); --color-pink-500: oklch(65.6% .241 354.308); --color-pink-600: oklch(59.2% .249 .584); --color-pink-700: oklch(52.5% .223 3.958); --color-pink-800: oklch(45.9% .187 3.815); --color-pink-900: oklch(40.8% .153 2.432); --color-pink-950: oklch(28.4% .109 3.907); --color-rose-50: oklch(96.9% .015 12.422); --color-rose-100: oklch(94.1% .03 12.58); --color-rose-200: oklch(89.2% .058 10.001); --color-rose-300: oklch(81% .117 11.638); --color-rose-400: oklch(71.2% .194 13.428); --color-rose-500: oklch(64.5% .246 16.439); --color-rose-600: oklch(58.6% .253 17.585); --color-rose-700: oklch(51.4% .222 16.935); --color-rose-800: oklch(45.5% .188 13.697); --color-rose-900: oklch(41% .159 10.272); --color-rose-950: oklch(27.1% .105 12.094); --color-slate-50: oklch(98.4% .003 247.858); --color-slate-100: oklch(96.8% .007 247.896); --color-slate-200: oklch(92.9% .013 255.508); --color-slate-300: oklch(86.9% .022 252.894); --color-slate-400: oklch(70.4% .04 256.788); --color-slate-500: oklch(55.4% .046 257.417); --color-slate-600: oklch(44.6% .043 257.281); --color-slate-700: oklch(37.2% .044 257.287); --color-slate-800: oklch(27.9% .041 260.031); --color-slate-900: oklch(20.8% .042 265.755); --color-slate-950: oklch(12.9% .042 264.695); --color-gray-50: oklch(98.5% .002 247.839); --color-gray-100: oklch(96.7% .003 264.542); --color-gray-200: oklch(92.8% .006 264.531); --color-gray-300: oklch(87.2% .01 258.338); --color-gray-400: oklch(70.7% .022 261.325); --color-gray-500: oklch(55.1% .027 264.364); --color-gray-600: oklch(44.6% .03 256.802); --color-gray-700: oklch(37.3% .034 259.733); --color-gray-800: oklch(27.8% .033 256.848); --color-gray-900: oklch(21% .034 264.665); --color-gray-950: oklch(13% .028 261.692); --color-zinc-50: oklch(98.5% 0 0); --color-zinc-100: oklch(96.7% .001 286.375); --color-zinc-200: oklch(92% .004 286.32); --color-zinc-300: oklch(87.1% .006 286.286); --color-zinc-400: oklch(70.5% .015 286.067); --color-zinc-500: oklch(55.2% .016 285.938); --color-zinc-600: oklch(44.2% .017 285.786); --color-zinc-700: oklch(37% .013 285.805); --color-zinc-800: oklch(27.4% .006 286.033); --color-zinc-900: oklch(21% .006 285.885); --color-zinc-950: oklch(14.1% .005 285.823); --color-neutral-50: oklch(98.5% 0 0); --color-neutral-100: oklch(97% 0 0); --color-neutral-200: oklch(92.2% 0 0); --color-neutral-300: oklch(87% 0 0); --color-neutral-400: oklch(70.8% 0 0); --color-neutral-500: oklch(55.6% 0 0); --color-neutral-600: oklch(43.9% 0 0); --color-neutral-700: oklch(37.1% 0 0); --color-neutral-800: oklch(26.9% 0 0); --color-neutral-900: oklch(20.5% 0 0); --color-neutral-950: oklch(14.5% 0 0); --color-stone-50: oklch(98.5% .001 106.423); --color-stone-100: oklch(97% .001 106.424); --color-stone-200: oklch(92.3% .003 48.717); --color-stone-300: oklch(86.9% .005 56.366); --color-stone-400: oklch(70.9% .01 56.259); --color-stone-500: oklch(55.3% .013 58.071); --color-stone-600: oklch(44.4% .011 73.639); --color-stone-700: oklch(37.4% .01 67.558); --color-stone-800: oklch(26.8% .007 34.298); --color-stone-900: oklch(21.6% .006 56.043); --color-stone-950: oklch(14.7% .004 49.25); --color-mauve-50: oklch(98.5% 0 0); --color-mauve-100: oklch(96% .003 325.6); --color-mauve-200: oklch(92.2% .005 325.62); --color-mauve-300: oklch(86.5% .012 325.68); --color-mauve-400: oklch(71.1% .019 323.02); --color-mauve-500: oklch(54.2% .034 322.5); --color-mauve-600: oklch(43.5% .029 321.78); --color-mauve-700: oklch(36.4% .029 323.89); --color-mauve-800: oklch(26.3% .024 320.12); --color-mauve-900: oklch(21.2% .019 322.12); --color-mauve-950: oklch(14.5% .008 326); --color-olive-50: oklch(98.8% .003 106.5); --color-olive-100: oklch(96.6% .005 106.5); --color-olive-200: oklch(93% .007 106.5); --color-olive-300: oklch(88% .011 106.6); --color-olive-400: oklch(73.7% .021 106.9); --color-olive-500: oklch(58% .031 107.3); --color-olive-600: oklch(46.6% .025 107.3); --color-olive-700: oklch(39.4% .023 107.4); --color-olive-800: oklch(28.6% .016 107.4); --color-olive-900: oklch(22.8% .013 107.4); --color-olive-950: oklch(15.3% .006 107.1); --color-mist-50: oklch(98.7% .002 197.1); --color-mist-100: oklch(96.3% .002 197.1); --color-mist-200: oklch(92.5% .005 214.3); --color-mist-300: oklch(87.2% .007 219.6); --color-mist-400: oklch(72.3% .014 214.4); --color-mist-500: oklch(56% .021 213.5); --color-mist-600: oklch(45% .017 213.2); --color-mist-700: oklch(37.8% .015 216); --color-mist-800: oklch(27.5% .011 216.9); --color-mist-900: oklch(21.8% .008 223.9); --color-mist-950: oklch(14.8% .004 228.8); --color-taupe-50: oklch(98.6% .002 67.8); --color-taupe-100: oklch(96% .002 17.2); --color-taupe-200: oklch(92.2% .005 34.3); --color-taupe-300: oklch(86.8% .007 39.5); --color-taupe-400: oklch(71.4% .014 41.2); --color-taupe-500: oklch(54.7% .021 43.1); --color-taupe-600: oklch(43.8% .017 39.3); --color-taupe-700: oklch(36.7% .016 35.7); --color-taupe-800: oklch(26.8% .011 36.5); --color-taupe-900: oklch(21.4% .009 43.1); --color-taupe-950: oklch(14.7% .004 49.3); --color-black: #000; --color-white: #fff; --spacing: .25rem; --breakpoint-sm: 40rem; --breakpoint-md: 48rem; --breakpoint-lg: 64rem; --breakpoint-xl: 80rem; --breakpoint-2xl: 96rem; --container-3xs: 16rem; --container-2xs: 18rem; --container-xs: 20rem; --container-sm: 24rem; --container-md: 28rem; --container-lg: 32rem; --container-xl: 36rem; --container-2xl: 42rem; --container-3xl: 48rem; --container-4xl: 56rem; --container-5xl: 64rem; --container-6xl: 72rem; --container-7xl: 80rem; --text-xs: .75rem; --text-xs--line-height: calc(1 / .75); --text-sm: .875rem; --text-sm--line-height: calc(1.25 / .875); --text-base: 1rem; --text-base--line-height: 1.5 ; --text-lg: 1.125rem; --text-lg--line-height: calc(1.75 / 1.125); --text-xl: 1.25rem; --text-xl--line-height: calc(1.75 / 1.25); --text-2xl: 1.5rem; --text-2xl--line-height: calc(2 / 1.5); --text-3xl: 1.875rem; --text-3xl--line-height: 1.2 ; --text-4xl: 2.25rem; --text-4xl--line-height: calc(2.5 / 2.25); --text-5xl: 3rem; --text-5xl--line-height: 1; --text-6xl: 3.75rem; --text-6xl--line-height: 1; --text-7xl: 4.5rem; --text-7xl--line-height: 1; --text-8xl: 6rem; --text-8xl--line-height: 1; --text-9xl: 8rem; --text-9xl--line-height: 1; --font-weight-thin: 100; --font-weight-extralight: 200; --font-weight-light: 300; --font-weight-normal: 400; --font-weight-medium: 500; --font-weight-semibold: 600; --font-weight-bold: 700; --font-weight-extrabold: 800; --font-weight-black: 900; --tracking-tighter: -.05em; --tracking-tight: -.025em; --tracking-normal: 0em; --tracking-wide: .025em; --tracking-wider: .05em; --tracking-widest: .1em; --leading-tight: 1.25; --leading-snug: 1.375; --leading-normal: 1.5; --leading-relaxed: 1.625; --leading-loose: 2; --radius-xs: .125rem; --radius-sm: .25rem; --radius-md: .375rem; --radius-lg: .5rem; --radius-xl: .75rem; --radius-2xl: 1rem; --radius-3xl: 1.5rem; --radius-4xl: 2rem; --shadow-2xs: 0 1px rgb(0 0 0 / .05); --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / .05); --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / .1), 0 1px 2px -1px rgb(0 0 0 / .1); --shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1); --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1); --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / .1), 0 8px 10px -6px rgb(0 0 0 / .1); --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / .25); --inset-shadow-2xs: inset 0 1px rgb(0 0 0 / .05); --inset-shadow-xs: inset 0 1px 1px rgb(0 0 0 / .05); --inset-shadow-sm: inset 0 2px 4px rgb(0 0 0 / .05); --drop-shadow-xs: 0 1px 1px rgb(0 0 0 / .05); --drop-shadow-sm: 0 1px 2px rgb(0 0 0 / .15); --drop-shadow-md: 0 3px 3px rgb(0 0 0 / .12); --drop-shadow-lg: 0 4px 4px rgb(0 0 0 / .15); --drop-shadow-xl: 0 9px 7px rgb(0 0 0 / .1); --drop-shadow-2xl: 0 25px 25px rgb(0 0 0 / .15); --text-shadow-2xs: 0px 1px 0px rgb(0 0 0 / .15); --text-shadow-xs: 0px 1px 1px rgb(0 0 0 / .2); --text-shadow-sm: 0px 1px 0px rgb(0 0 0 / .075), 0px 1px 1px rgb(0 0 0 / .075), 0px 2px 2px rgb(0 0 0 / .075); --text-shadow-md: 0px 1px 1px rgb(0 0 0 / .1), 0px 1px 2px rgb(0 0 0 / .1), 0px 2px 4px rgb(0 0 0 / .1); --text-shadow-lg: 0px 1px 2px rgb(0 0 0 / .1), 0px 3px 2px rgb(0 0 0 / .1), 0px 4px 8px rgb(0 0 0 / .1); --ease-in: cubic-bezier(.4, 0, 1, 1); --ease-out: cubic-bezier(0, 0, .2, 1); --ease-in-out: cubic-bezier(.4, 0, .2, 1); --animate-spin: spin 1s linear infinite; --animate-ping: ping 1s cubic-bezier(0, 0, .2, 1) infinite; --animate-pulse: pulse 2s cubic-bezier(.4, 0, .6, 1) infinite; --animate-bounce: bounce 1s infinite; @keyframes spin { to { transform: rotate(360deg); } } @keyframes ping { 75%, 100% { transform: scale(2); opacity: 0; } } @keyframes pulse { 50% { opacity: .5; } } @keyframes bounce { 0%, 100% { transform: translateY(-25%); animation-timing-function: cubic-bezier(.8, 0, 1, 1); } 50% { transform: none; animation-timing-function: cubic-bezier(0, 0, .2, 1); } } --blur-xs: 4px; --blur-sm: 8px; --blur-md: 12px; --blur-lg: 16px; --blur-xl: 24px; --blur-2xl: 40px; --blur-3xl: 64px; --perspective-dramatic: 100px; --perspective-near: 300px; --perspective-normal: 500px; --perspective-midrange: 800px; --perspective-distant: 1200px; --aspect-video: 16 / 9; --default-transition-duration: .15s; --default-transition-timing-function: cubic-bezier(.4, 0, .2, 1); --default-font-family: --theme(--font-sans, initial); --default-font-feature-settings: --theme( --font-sans--font-feature-settings, initial ); --default-font-variation-settings: --theme( --font-sans--font-variation-settings, initial ); --default-mono-font-family: --theme(--font-mono, initial); --default-mono-font-feature-settings: --theme( --font-mono--font-feature-settings, initial ); --default-mono-font-variation-settings: --theme( --font-mono--font-variation-settings, initial ); }@theme default inline reference{ --blur: 8px; --shadow: 0 1px 3px 0 rgb(0 0 0 / .1), 0 1px 2px -1px rgb(0 0 0 / .1); --shadow-inner: inset 0 2px 4px 0 rgb(0 0 0 / .05); --drop-shadow: 0 1px 2px rgb(0 0 0 / .1), 0 1px 1px rgb(0 0 0 / .06); --radius: .25rem; --max-width-prose: 65ch; }}@layer base{*,:after,:before,::backdrop,::file-selector-button{box-sizing:border-box;margin:0;padding:0;border:0 solid}html,:host{line-height:1.5;-webkit-text-size-adjust:100%;tab-size:4;font-family:--theme(--default-font-family,ui-sans-serif,system-ui,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji");font-feature-settings:--theme(--default-font-feature-settings,normal);font-variation-settings:--theme(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:--theme(--default-mono-font-family,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace);font-feature-settings:--theme(--default-mono-font-feature-settings,normal);font-variation-settings:--theme(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring{outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{display:block;vertical-align:middle}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea,::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;border-radius:0;background-color:transparent;opacity:1}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not (-webkit-appearance: -apple-pay-button)) or (contain-intrinsic-size: 1px){::placeholder{color:color-mix(in oklab,currentcolor 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#102033;--muted: #6d7888;--line: #d7dde4;--orange: #ef6a27;--navy: #172435;--panel: #e9edf1}*{box-sizing:border-box}html,body{margin:0;min-height:100%}body{background:#eef1f4;color:var(--ink);font-family:Arial,Microsoft YaHei,sans-serif}button{font:inherit}.app-shell{min-height:100vh}.topbar{height:68px;padding:0 22px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:12px;position:relative;z-index:20}.brand-mark{width:38px;height:38px;border-radius:9px;display:grid;place-items:center;background:var(--orange);color:#fff;font-weight:900;font-size:24px;transform:skew(-8deg)}.brand-copy strong{display:block;font-size:17px;letter-spacing:1px}.brand-copy span{display:block;color:var(--muted);font-size:11px;margin-top:2px}.lesson-chip{margin-left:auto;padding:8px 18px;border-left:1px solid var(--line);display:flex;gap:10px;align-items:center}.lesson-chip span{color:var(--orange);font-size:11px;font-weight:800}.lesson-chip 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