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b{color:var(--wd-ink);font-weight:800}.cp-player__error{color:hsl(var(--state-danger-text));margin:6px 0 0 16px;font-size:13px;font-weight:600}.cp-formula{flex-wrap:wrap;align-items:stretch;gap:6px;display:flex}.cp-formula__op{color:var(--wd-ink);align-self:center;font-size:18px;font-weight:800}.cp-slot{text-align:center;background:hsl(var(--card));outline:1.5px dashed hsl(var(--wd-h) 50% 45% / .35);outline-offset:-1.5px;border-radius:12px;flex:1 1 0;align-content:start;justify-items:center;gap:2px;min-width:4.5rem;padding:8px 10px;display:grid}.cp-slot--fixed{color:#fff;background:var(--wd-solid);outline:0}.cp-slot__role{color:var(--wd-ink);font-size:11px;font-weight:800;line-height:1.2}.cp-slot--fixed .cp-slot__role{color:#ffffffd9}.cp-slot__value{font-family:var(--font-chinese);overflow-wrap:anywhere;font-size:19px;font-weight:700;line-height:1.3}.cp-slot__value--empty{color:hsl(var(--foreground) / .4)}.cp-slot__note{color:hsl(var(--foreground) / .75);font-size:11.5px;font-weight:500;line-height:1.35}.cp-slot--fixed .cp-slot__note{color:#ffffffd9}@keyframes cp-rise{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}.cp-rise{animation:.46s cubic-bezier(.16,1,.3,1) both cp-rise;animation-delay:calc(var(--cp-i,0) * 45ms)}@media (prefers-reduced-motion:reduce){.cp-press,.cp-pill,.cp-link,.cp-disclosure__chevron,.cp-player__toggle{transition:none}.cp-press:active,.cp-pill:active:not(:disabled){transform:none}.cp-rise,.cp-disclosure[open] .cp-disclosure__body,.cp-explainer[open] .cp-explainer__body{animation:none}.cp-explainer>summary{transition:none}}.cp-overview{background:hsl(var(--background));min-height:100%}.cp-overview__head{gap:10px;max-width:58rem;margin:0 auto;padding:32px 16px 20px;display:grid}.cp-overview__title{color:hsl(var(--foreground));letter-spacing:-.025em;text-wrap:balance;margin:0;font-size:34px;font-weight:800;line-height:1.08}.cp-overview__lede{max-width:52ch;color:hsl(var(--foreground) / .75);text-wrap:pretty;margin:0;font-size:16px;font-weight:500;line-height:1.55}.cp-overview__body{gap:48px;max-width:58rem;margin:0 auto;padding:8px 16px 96px;display:grid}.cp-overview__level{scroll-margin-top:8.5rem}.cp-overview__level .cp-section-head{margin-bottom:14px}@media (min-width:640px){.cp-overview__head,.cp-overview__body{padding-inline:24px}.cp-overview__head{padding-top:48px}.cp-overview__title{font-size:44px}}@media (min-width:1024px){.cp-overview__head,.cp-overview__body{max-width:calc(58rem + 80px);padding-inline:40px}}.cp-icon-tile--number{font-variant-numeric:tabular-nums;font-size:14px;font-weight:800}.cp-level-bar{z-index:20;background:hsl(var(--background));border-bottom:1px solid hsl(var(--border) / .7);position:sticky;top:64px}.cp-level-bar__inner{max-width:58rem;margin:0 auto;padding:10px 16px}.cp-level-bar__list{scroll-snap-type:x 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.55);font-variant-numeric:tabular-nums;font-size:12.5px;font-weight:700}@media (hover:hover){.cp-level-chip:hover{outline-color:hsl(var(--wd-h) var(--wd-ink-s) var(--wd-ink-l) / .4)}}.cp-level-chip:active{transform:scale(.97)}.cp-level-chip[aria-current]{color:var(--wd-ink);background:var(--wd-soft);outline-color:#0000}.cp-level-chip[aria-current] .cp-level-chip__count{color:var(--wd-ink);opacity:.75}.cp-level-chip:focus-visible{outline:3px solid hsl(var(--ring) / .6);outline-offset:2px}.cp-lesson-grid{gap:10px;margin:0;padding:0;list-style:none;display:grid}@media (min-width:768px){.cp-lesson-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}.cp-lesson-card{height:100%;min-height:88px;color:hsl(var(--card-foreground));align-items:center;gap:14px;padding:8px 14px 8px 8px;display:flex}.cp-lesson-card:focus-visible{outline:3px solid hsl(var(--ring) / .6);outline-offset:2px}.cp-lesson-card__text{flex:1;gap:1px;min-width:0;display:grid}.cp-lesson-card__number{color:var(--wd-ink);font-size:12px;font-weight:800;line-height:1.3}.cp-lesson-card__title{-webkit-line-clamp:2;text-wrap:pretty;-webkit-box-orient:vertical;font-size:15px;font-weight:750;line-height:1.3;display:-webkit-box;overflow:hidden}.cp-lesson-card__zh{color:hsl(var(--foreground) / .7);font-family:var(--font-chinese);white-space:nowrap;text-overflow:ellipsis;font-size:14px;font-weight:500;line-height:1.45;overflow:hidden}.cp-lesson-card__go{width:32px;height:32px;color:var(--wd-ink);background:var(--wd-soft);border-radius:99px;flex:none;place-items:center;transition:transform .22s cubic-bezier(.23,1,.32,1);display:grid}.cp-lesson-card__go svg{stroke-width:2.5px;width:16px;height:16px}@media (hover:hover){.cp-lesson-card:hover .cp-lesson-card__go{transform:translate(2px)}}.cp-artwork{background:linear-gradient(145deg, var(--wd-top), var(--wd-soft));flex:none;place-items:center;display:grid;position:relative;overflow:hidden}.cp-artwork--card{border-radius:14px;width:72px;height:72px}@media (min-width:640px){.cp-artwork--card{width:88px;height:72px}}.cp-artwork--hero{border-radius:16px;width:100%;min-height:220px}.cp-artwork__glyph{color:var(--wd-ink);font-family:var(--font-chinese);opacity:.85;font-weight:700;line-height:1}.cp-artwork--card .cp-artwork__glyph{font-size:34px}.cp-artwork--hero .cp-artwork__glyph{opacity:.55;font-size:96px}@media (prefers-reduced-motion:reduce){.cp-level-chip,.cp-lesson-card__go{transition:none}.cp-level-chip:active{transform:none}}