body{margin:0;background:#F6F2EA}
a{color:#1B1A17}
.gx{--ease:cubic-bezier(.2,.7,.2,1);--ink:#1B1A17;font-variant-numeric:lining-nums;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
.gx a,.gx button{-webkit-tap-highlight-color:transparent}
.gx button{font-family:inherit;cursor:pointer}
.gx :focus-visible{outline:2px solid var(--accent);outline-offset:4px;border-radius:2px}
.gx .num{font-variant-numeric:tabular-nums lining-nums}
.gx ::selection{background:var(--accent-soft);color:var(--ink)}

@keyframes gxRise{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
@keyframes gxGrow{from{transform:scaleX(0)}to{transform:scaleX(1)}}
@keyframes gxFade{from{opacity:0}to{opacity:1}}
.gx .rise{animation:gxRise .8s var(--ease) both;animation-delay:var(--d,0s)}
.gx .grow{transform-origin:left;animation:gxGrow 1.1s var(--ease) both;animation-delay:var(--d,.5s)}
.gx .fade{animation:gxFade 1.2s ease both;animation-delay:var(--d,.2s)}

.gx .nav a{position:relative;transition:color .2s var(--ease)}
.gx .nav a::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .35s var(--ease)}
.gx .nav a[aria-current="page"]{color:var(--ink)!important}
.gx .nav a[aria-current="page"]::after{transform:scaleX(1)}
.gx .search{position:relative}
.gx .search::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform .45s var(--ease)}
.gx .search:focus-within::after{transform:scaleX(1)}
.gx .search svg{transition:transform .3s var(--ease),stroke .2s}
.gx .search:focus-within svg{transform:scale(1.08);stroke:var(--ink)}
.gx .search input::placeholder{color:#736D60;transition:opacity .2s,transform .3s var(--ease)}
.gx .search input:focus::placeholder{opacity:.45;transform:translateX(4px)}

.gx .btn-ink{transition:background-color .25s var(--ease),transform .15s var(--ease),box-shadow .3s var(--ease)}
.gx .btn-ink svg,.gx .arrow{display:inline-block;transition:transform .3s var(--ease)}
.gx .btn-ink:active,.gx .btn-line:active,.gx .press:active{transform:translateY(1px) scale(.99)}
.gx .btn-line{background:linear-gradient(var(--ink),var(--ink)) no-repeat 50% 100%/100% 0;transition:background-size .4s var(--ease),color .3s var(--ease),transform .15s var(--ease)}
.gx .btn-line:active{background-size:100% 100%;color:#F6F2EA!important}
.gx .link-u{text-decoration:underline;text-decoration-color:#BDB4A3;text-decoration-thickness:1px;text-underline-offset:6px;transition:text-decoration-color .25s,text-underline-offset .3s var(--ease),color .2s}
.gx .quiet,.gx .foot a{transition:color .2s var(--ease)}
.gx .icon{border-radius:50%;transition:background-color .2s}
.gx .icon:active{background:rgba(27,26,23,.06)!important}

.gx .tab{position:relative;transition:color .2s var(--ease)}
.gx .tab::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--accent);transform:scaleX(0);transition:transform .35s var(--ease)}
.gx .tab[aria-selected="true"]{color:var(--ink)!important}
.gx .tab[aria-selected="true"]::after{transform:scaleX(1)}

.gx .plate{overflow:hidden}
.gx .plate>div,.gx .plate>img,.gx .plate>span{transition:transform 1.6s var(--ease),filter .8s ease}

.gx .row{position:relative;isolation:isolate}
.gx .row::before{content:"";position:absolute;inset:0 -16px;z-index:-1;background:#EFE9DD;opacity:0;transition:opacity .35s var(--ease)}
.gx .row:active::before{opacity:1}
.gx .row .no{transition:color .35s var(--ease),transform .5s var(--ease)}
.gx .row .body{transition:transform .5s var(--ease)}
.gx .row .more{transition:color .35s var(--ease)}
.gx .row .go{opacity:0;transform:translateX(-8px);transition:opacity .3s var(--ease),transform .45s var(--ease)}
.gx .row .bar{transform-origin:left;animation:gxGrow 1.2s var(--ease) both;animation-delay:var(--bd,.9s)}

.gx .w{position:relative;display:inline-block;transition:color .25s var(--ease)}
.gx .w::after{content:attr(data-zh);position:absolute;left:50%;bottom:calc(100% + 8px);transform:translate(-50%,4px);white-space:nowrap;padding:5px 9px;border-radius:3px;background:var(--ink);color:#F6F2EA;font:500 12px/1.2 -apple-system,BlinkMacSystemFont,'PingFang SC',sans-serif;letter-spacing:.04em;opacity:0;pointer-events:none;transition:opacity .2s var(--ease),transform .3s var(--ease);z-index:3}
.gx .w:focus-visible::after{opacity:1;transform:translate(-50%,0)}

.gx .step{position:relative;transition:background-color .35s var(--ease)}
.gx .step::before{content:"";position:absolute;left:0;right:0;top:-1px;height:2px;background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform .5s var(--ease)}
.gx .step.on::before{background:var(--accent);transform:scaleX(1)}
.gx .step .sn{transition:color .35s var(--ease),transform .5s var(--ease)}

.gx .chip{transition:border-color .25s var(--ease),background-color .25s var(--ease),transform .3s var(--ease)}
.gx .chip:active{transform:translateY(1px)}

@media (hover:hover){
.gx .nav a:hover{color:var(--ink)!important}
.gx .nav a:hover::after{transform:scaleX(.5)}
.gx .nav a[aria-current="page"]:hover::after{transform:scaleX(1)}
.gx .nav sup{display:inline-block;transition:transform .25s var(--ease)}
.gx .nav a:hover sup{transform:translateY(-2px)}
.gx .search:hover::after{transform:scaleX(1)}
.gx .quiet:hover,.gx .foot a:hover{color:var(--ink)!important}
.gx .btn-ink:hover{background:#2E2B26!important;box-shadow:0 10px 24px -14px rgba(27,26,23,.55)}
.gx .btn-ink:hover svg,.gx a:hover .arrow{transform:translateX(4px)}
.gx .btn-line:hover{background-size:100% 100%;color:#F6F2EA!important}
.gx .link-u:hover{text-decoration-color:var(--ink);text-underline-offset:3px;color:var(--ink)!important}
.gx .icon:hover{background:rgba(27,26,23,.05)!important}
.gx .tab:hover{color:var(--ink)!important}
.gx .tab:hover::after{transform:scaleX(.4)}
.gx .tab[aria-selected="true"]:hover::after{transform:scaleX(1)}
.gx .plate:hover>div,.gx .plate:hover>img,.gx .hov:hover .plate>div,.gx .hov:hover .plate>span{transform:scale(1.04);filter:saturate(1)!important}
.gx .row:hover::before{opacity:1}
.gx .row:hover .no{color:var(--accent-ink)!important;transform:translateY(-2px)}
.gx .row:hover .body{transform:translateX(6px)}
.gx .row:hover .more{color:#5E5A50!important}
.gx .row:hover .go{opacity:1;transform:none}
.gx .w:hover{color:var(--ink)!important}
.gx .w:hover::after{opacity:1;transform:translate(-50%,0)}
.gx .step:hover{background:rgba(239,233,221,.6)}
.gx .step:hover::before{transform:scaleX(1)}
.gx .step:hover .sn{color:var(--accent-ink)!important;transform:translateY(-3px)}
.gx .chip:hover{border-color:#1B1A17!important;transform:translateY(-1px)}
.gx .cell p:first-child{transition:color .3s var(--ease),transform .4s var(--ease)}
.gx .cell:hover p:first-child{color:var(--accent-ink)!important;transform:translateY(-2px)}
}
@media (prefers-reduced-motion:reduce){.gx *,.gx *::before,.gx *::after{animation:none!important;transition-duration:.01s!important}}
.gx .w.nx{color:var(--ink)!important;font-style:italic;background:linear-gradient(var(--accent),var(--accent)) no-repeat 0 100%/100% 2px;padding-bottom:2px}
.gx .w.nx::before{content:"下一个";position:absolute;left:0;bottom:calc(100% + 1px);font:500 10px/1 -apple-system,BlinkMacSystemFont,'PingFang SC',sans-serif;letter-spacing:.2em;color:var(--accent-ink);font-style:normal}
@media(hover:hover){.gx .w.nx:hover::before{opacity:0}}
.gx .w.nx::before{transition:opacity .2s}



@font-face{font-family:BookSerif;src:url('./source-serif-4-latin-opsz-normal.woff2') format('woff2');font-weight:200 900;font-style:normal;font-display:swap}
@font-face{font-family:BookSerif;src:url('./source-serif-4-latin-opsz-italic.woff2') format('woff2');font-weight:200 900;font-style:italic;font-display:swap}
body.gx{--paper:#F6F2EA;--paper-light:#FBF8F2;--ink:#1B1A17;--body:#3F3C35;--muted:#6F695C;--line:#DCD4C5;--accent:#8A9460;--accent-ink:#50563A;--accent-soft:#D8DCC6;--serif:BookSerif,Georgia,serif;--song:'Songti SC','STSong','SimSun',serif;--sans:-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif;background:var(--paper)!important;background-image:none!important;color:var(--body);font:15px/1.75 var(--sans);margin:0;padding:0}
.gx *, .gx *::before,.gx *::after{box-sizing:border-box}
.gx [hidden]{display:none!important}
.gx h1,.gx h2,.gx h3,.gx h4{color:var(--ink);font-family:var(--song);font-weight:600;letter-spacing:0;line-height:1.25}
.gx a{color:inherit}.gx button,.gx input,.gx select{font-family:var(--sans)}
.gx button,.gx a{touch-action:manipulation}
.gx button{cursor:pointer;min-width:44px;min-height:44px}.gx [role=button],.gx summary{min-width:44px;min-height:44px}.gx .num{font-family:var(--serif);font-variant-numeric:tabular-nums lining-nums}
.gx :is(button,[role=button],summary){min-width:44px!important;min-height:44px!important}
.gx .btn-ink{border:1px solid var(--ink);border-radius:2px;background:var(--ink);color:var(--paper);padding:14px 28px;display:inline-flex;align-items:center;justify-content:center;gap:14px;min-height:52px;text-decoration:none;font:15px/1.5 var(--sans)}
.gx .btn-line{border:1px solid #7D776A;border-radius:2px;display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:12px 24px;text-decoration:none;color:var(--ink)}
.gx .quiet{color:var(--muted)}.gx .link-u{display:inline-flex;align-items:center;min-height:44px}
.gx .wrap{max-width:1200px;margin-inline:auto}
.gx .book-top{position:relative;inset:auto;z-index:30;height:76px;min-height:76px;padding:0;background:var(--paper);color:var(--ink);border:0;border-bottom:1px solid var(--line);box-shadow:none;backdrop-filter:none}
.gx .book-top .topbar-inner{display:flex;max-width:1200px;margin:auto;height:76px!important;padding:0;gap:40px;align-items:center;min-height:0}
.gx .book-brand{font-family:var(--song);font-weight:600;font-size:23px;white-space:nowrap;text-decoration:none;min-height:44px;display:inline-flex;align-items:center;gap:12px}
.gx .book-brand small{font-size:14px;font-weight:400;letter-spacing:.1em;color:var(--muted)}
.gx .book-top .nav{display:flex;align-items:center;gap:34px;flex:1;font-size:14px}
.gx .book-top .nav a,.gx .book-top .nav button{background:none;border:0;border-radius:0;min-height:44px;display:inline-flex;align-items:center;text-decoration:none;padding:0;color:var(--body);font-weight:400}
.gx .book-top sup{color:#9A4F43;font-size:11px;margin-left:5px}
.gx .book-search{border:0;border-bottom:1px solid #BDB4A3;background:none;min-height:44px;width:240px;text-align:left;color:var(--muted);font-size:13px;padding:8px 0;display:flex;align-items:center;gap:14px}
.gx .book-search svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.5}
.gx .book-my{min-height:44px;display:flex;align-items:center;text-decoration:none;font-size:14px}
.gx .book-bottom{display:none}.gx .mobile-unit-label,.gx .book-back{display:none}
.gx #guideLaunch{display:none!important}
.gx .course-dialog{background:var(--paper);color:var(--body);border:1px solid var(--line);border-radius:3px;max-width:min(740px,calc(100vw - 28px));padding:26px}
.gx .course-dialog button,.gx .course-dialog input,.gx .course-dialog a{min-height:44px}
.gx .course-dialog h2,.gx .course-dialog h3{font-family:var(--song)}
.gx .course-dialog[open]{animation-name:bookishDialogIn}
@keyframes bookishDialogIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}
.gx .course-plan .task-controls{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:20px 0}.gx .course-plan label{display:flex;flex-direction:column;gap:6px}.gx .course-plan input[type=number]{width:100%;padding:8px;border:1px solid var(--line);background:var(--paper-light);color:var(--ink)}.gx .course-plan fieldset{grid-column:1/-1;border:1px solid var(--line)}.gx .unit-focus-options{display:flex;flex-wrap:wrap;gap:20px}.gx .course-plan input[type=radio],.gx .course-plan input[type=checkbox]{min-height:0}.gx .course-plan .task-actions{display:flex;justify-content:flex-end;gap:20px;margin-top:24px}.gx .course-plan .task-actions button{border:1px solid var(--line);border-radius:2px;padding:10px 20px}.gx .course-plan .task-settings-close{float:right;border:0;background:none}.gx .course-plan .course-plan-note{font-size:13px;color:var(--muted)}
.gx .book-top .book-my{border:0!important;border-radius:0!important;background:none!important;box-shadow:none!important;padding:0!important;font-family:var(--sans)!important}
.gx .book-top .topbar-inner{flex-wrap:nowrap!important}
.gx .book-top .topbar-inner{width:auto!important}
.gx .book-top .book-search{flex:0 0 240px!important;width:240px!important;max-width:240px!important;margin:0!important}
@media(max-width:680px){.gx .book-top .topbar-inner{height:58px!important}.gx .w{min-width:44px}}
@media(max-width:680px){.gx .book-top .book-search{flex:0 0 44px!important;width:44px!important;max-width:44px!important}.gx .book-top .book-back{min-width:44px;justify-content:center}.gx .book-top .mobile-unit-label{margin-left:0}}
@media(max-width:359px){.gx .book-top .book-brand small{display:none}.gx .book-top .topbar-inner{gap:10px}.gx .book-brand{min-width:0}}
.gx #bookAccount{background:var(--paper);color:var(--body);border:1px solid var(--line);border-radius:2px;padding:28px;max-width:calc(100vw - 32px);width:360px}
.gx #bookAccount::backdrop{background:rgba(27,26,23,.35)}
.gx #bookAccount h2{margin:0 0 20px}.gx #bookAccount a,.gx #bookAccount button{min-width:44px;min-height:44px;display:flex;align-items:center}
.gx #bookAccountClose{position:absolute;right:12px;top:8px;border:0;background:none;justify-content:center}
.gx #gk3500SignOutButton{position:static!important;min-height:44px!important;min-width:44px;border-radius:2px;box-shadow:none;background:var(--paper-light);margin-top:12px;font:14px var(--sans);z-index:auto}
.gx .course-directory-grid a{border-radius:0;box-shadow:none;background:transparent}
.gx .course-directory-grid{gap:0 20px}.gx .course-directory-grid a{border-width:0 0 1px;min-height:48px}
.gx .course-tool-link{display:none}.gx #gkVocabSearchDialog{font-family:var(--sans);color:var(--body)}
.gx #gkVocabSearchDialog{background:var(--paper);border-color:var(--line);border-radius:3px}
.gx .gk-search-dialog-head button{border-radius:2px;background:var(--paper-light);color:var(--ink)}
.gx .gk-search-tabs button,.gx .gk-search-tabs span{color:var(--muted)}
.gx .gk-search-tabs button[aria-selected=true]{color:var(--ink);border-bottom-color:var(--accent)}
.gx ::selection{background:var(--accent-soft);color:var(--ink)}
@media(max-width:1300px){.gx .book-top .topbar-inner,.gx .wrap{margin-inline:48px}.gx .book-top .topbar-inner{gap:24px}.gx .book-top .nav{gap:22px}.gx .book-search{width:200px}}
@media(max-width:1080px){.gx .book-top .nav{gap:18px}.gx .book-brand small{display:none}.gx .book-search{width:150px}}
@media(max-width:680px){body.gx{padding-bottom:calc(76px + env(safe-area-inset-bottom,0px))}.gx .wrap{margin-inline:24px}.gx .book-top{height:58px;min-height:58px}.gx .book-top .topbar-inner{margin-inline:20px;gap:12px;justify-content:space-between}.gx .book-brand{font-size:21px;flex:1}.gx .book-brand small{display:inline;font-size:12px;letter-spacing:.04em}.gx .book-top .nav{display:none}.gx .book-search{border:0;width:44px;padding:12px;justify-content:center}.gx .book-search span{display:none}.gx .book-my{font-size:13px;justify-content:center;min-width:44px}.gx .book-top.unit-top .book-brand{display:none}.gx .book-top.unit-top .book-back{display:inline-flex;align-items:center;min-height:44px;text-decoration:none;font-size:14px}.gx .book-top.unit-top .mobile-unit-label{display:block;font:500 15px var(--song);margin-right:auto;margin-left:12px}.gx .book-top.unit-top .book-my{display:none}.gx .book-bottom{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;bottom:0;left:0;right:0;padding-bottom:env(safe-area-inset-bottom,0px);height:calc(64px + env(safe-area-inset-bottom,0px));z-index:40;background:rgba(246,242,234,.98);border-top:1px solid var(--line)}.gx .book-bottom a,.gx .book-bottom button{position:relative;display:flex;align-items:center;justify-content:center;min-height:64px;font:13px var(--sans);color:var(--muted);background:none;border:0;text-decoration:none;border-radius:0;padding:14px 4px 4px}.gx .book-bottom [aria-current=page]{color:var(--ink)}.gx .book-bottom [aria-current=page]::before{content:'';position:absolute;top:14px;width:18px;height:2px;background:var(--accent)}.gx .w{min-height:44px;line-height:44px}.gx .course-dialog{max-height:calc(100dvh - 120px);overflow:auto}.gx .btn-ink,.gx .btn-line{min-height:52px}}
@media(prefers-reduced-motion:reduce){.gx *,.gx *::before,.gx *::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}


.bookish-home,.bookish-home *,.bookish-home *::before,.bookish-home *::after{box-sizing:border-box}.bookish-home{width:min(1200px,calc(100% - 48px));margin:0 auto;padding:0 0 48px;color:var(--body,#3f3c35)}
.bookish-home [hidden]{display:none!important}.bookish-home .home-first{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:24px;padding:64px 0 60px}
.bookish-home .home-resume{grid-column:1/span 7;min-width:0}.bookish-home .home-daily{grid-column:9/span 4;min-width:0;display:flex;flex-direction:column}
.bookish-home .home-kicker{display:flex;align-items:center;gap:18px;font-size:12px;letter-spacing:.18em;color:#6f695c;line-height:1.5}.bookish-home .home-kicker .rule{flex:1;min-width:12px;height:1px;background:#dcd4c5}.bookish-home .home-kicker .num{letter-spacing:.04em;white-space:nowrap}
.bookish-home .resume-title{display:flex;align-items:baseline;flex-wrap:wrap;gap:6px 24px;margin-top:36px}.bookish-home .resume-title h1{margin:0;font:400 68px/1.08 var(--font-en,"Source Serif 4","SerifEN",Georgia,serif);letter-spacing:-.02em;color:#1b1a17;overflow-wrap:anywhere}.bookish-home .resume-title h1.is-foundation{font-family:var(--font-cn,"Noto Serif SC","Songti SC","STSong","SimSun",serif);font-size:52px}.bookish-home .resume-title .slash{margin:0 .14em;color:#c9c0ae;font-weight:300}.bookish-home .resume-title h1 i{font-weight:400;color:#3f3c35}.bookish-home .resume-gloss{margin:0;font:400 21px/1.5 var(--font-cn,"Noto Serif SC","Songti SC","STSong","SimSun",serif);letter-spacing:.1em;color:#5e5a50}.bookish-home .resume-intro{max-width:560px;margin:18px 0 0;font-size:15px;line-height:1.8;color:#5e5a50}
.bookish-home .resume-words{margin-top:34px;padding:22px 0 20px;border-top:1px solid #dcd4c5;border-bottom:1px solid #dcd4c5}.bookish-home .words-meta{display:flex;justify-content:space-between;gap:12px;font-size:12px;letter-spacing:.12em;color:#6f695c}.bookish-home .words-meta b{font:600 14px var(--font-en,"Source Serif 4",Georgia,serif);color:#1b1a17;letter-spacing:0}.bookish-home .word-line{display:flex;flex-wrap:wrap;gap:18px 20px;margin-top:22px;font:400 20px/1.25 var(--font-en,"Source Serif 4",Georgia,serif)}.bookish-home .word-line .w{display:inline-flex;align-items:baseline;min-height:32px;text-decoration:none;color:#6f695c}.bookish-home .word-line .w.is-learned{color:#1b1a17}.bookish-home .word-line .w.is-learned>i{width:4px;height:4px;border-radius:50%;background:#5c6e3e;align-self:flex-start;margin:4px 0 0 4px}.bookish-home .word-line .w::after{white-space:normal;text-align:center;min-width:90px;max-width:240px;width:max-content}.bookish-home .local-note{font-size:12px;line-height:1.6;color:#6f695c;margin:8px 0 0}
.bookish-home .resume-progress{margin-top:26px}.bookish-home .unit-progress-line{display:flex;justify-content:space-between;align-items:baseline;gap:16px;font-size:13px;color:#6f695c}.bookish-home .unit-progress-line .unit-representatives{font:italic 15px var(--font-en,"Source Serif 4",Georgia,serif);color:#5e5a50}.bookish-home .unit-progress-line .sep{margin:0 10px;color:#c9c0ae}.bookish-home .unit-progress-line b{font:600 16px var(--font-en,"Source Serif 4",Georgia,serif);color:#1b1a17}.bookish-home .home-progress-track{height:3px;display:flex;margin-top:12px;background:#e3dbcc;overflow:hidden}.bookish-home .home-progress-track>span{display:block;height:100%;flex:none;transform-origin:left}.bookish-home .home-progress-track .known{background:#5c6e3e}.bookish-home .home-progress-track .vague{background:#c49a4a}.bookish-home .home-progress-track .unfamiliar{background:#b0614a}.bookish-home .progress-legend{display:flex;flex-wrap:wrap;gap:10px 22px;margin:10px 0 0;color:#6f695c;font-size:12px}.bookish-home .progress-legend i{display:inline-block;width:6px;height:6px;border-radius:50%;margin-right:7px;background:var(--dot);vertical-align:1px}.bookish-home .resume-actions{display:flex;align-items:center;gap:32px;margin-top:34px}.bookish-home .btn-ink,.bookish-home .btn-line{min-height:54px;padding:0 30px;display:inline-flex;align-items:center;justify-content:center;gap:14px;border-radius:2px;font-size:15px;letter-spacing:.06em;text-decoration:none}.bookish-home .btn-ink{background:#1b1a17;border:1px solid #1b1a17;color:#f6f2ea}.bookish-home .btn-ink .btn-divider{width:1px;height:16px;background:rgba(246,242,234,.25)}.bookish-home .btn-ink em{font:italic 16px var(--font-en,"Source Serif 4",Georgia,serif);letter-spacing:0}.bookish-home .btn-line{border:1px solid #1b1a17;color:#1b1a17}.bookish-home .resume-actions .link-u{font-size:15px;color:#3f3c35;white-space:nowrap}.bookish-home .home-arrow{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.5;flex:none}
.bookish-home .daily-mobile-heading{display:none}.bookish-home .daily-plate{margin:36px 0 0}.bookish-home .daily-plate img{display:block;width:100%;height:210px;object-fit:cover;object-position:center 30%;filter:saturate(.8)}.bookish-home .daily-cells{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));margin-top:24px;border-bottom:1px solid #dcd4c5}.bookish-home .daily-cells .cell{padding:4px 0 18px;min-width:0}.bookish-home .daily-cells .cell+.cell{padding-left:20px;border-left:1px solid #dcd4c5}.bookish-home .daily-cells .number{margin:0;font:300 50px/1 var(--font-en,"Source Serif 4",Georgia,serif);color:#1b1a17}.bookish-home .daily-cells .caption{margin:8px 0 0;font-size:12px;letter-spacing:.2em;color:#6f695c}.bookish-home .today-progress{display:flex;align-items:center;gap:14px;margin-top:16px;font-size:12px;color:#6f695c}.bookish-home #courseTodayProgress{flex:1;height:2px;background:#e3dbcc;min-width:16px;overflow:hidden}.bookish-home #courseTodayProgress>span{display:block;height:100%;background:var(--accent,#8a9460);width:0}.bookish-home .today-progress b{font:600 14px var(--font-en,"Source Serif 4",Georgia,serif);color:#1b1a17}.bookish-home .home-daily .btn-line{display:flex;margin-top:24px}.bookish-home .plan-adjust{align-self:center;min-height:44px;margin-top:6px;padding:9px 0;border:0;background:none;font:inherit;font-size:13px;color:#6f695c;text-decoration:none}
.bookish-home .home-overview{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid #1b1a17;border-bottom:1px solid #dcd4c5}.bookish-home .home-overview>div,.bookish-home .home-overview>a{display:flex;align-items:baseline;gap:14px;padding:22px 0;min-width:0;text-decoration:none}.bookish-home .home-overview>:nth-child(n+2){padding-left:32px;border-left:1px solid #dcd4c5}.bookish-home .overview-number{font:400 34px/1.1 var(--font-en,"Source Serif 4",Georgia,serif);color:#1b1a17}.bookish-home .overview-label{font-size:14px;color:#6f695c;line-height:1.6}.bookish-home .overview-number.mastered{color:#5c6e3e}.bookish-home .overview-number.notebook{color:#a4523a}.bookish-home .overview-detail{white-space:nowrap}
.bookish-home .bookish-directory{margin-top:92px;scroll-margin-top:100px}.bookish-home .directory-head{display:flex;align-items:baseline;gap:44px;padding-bottom:26px;border-bottom:1px solid #1b1a17}.bookish-home .directory-head h2{margin:0;font:600 42px/1.2 var(--font-cn,"Noto Serif SC","Songti SC","STSong","SimSun",serif);letter-spacing:.06em;color:#1b1a17}.bookish-home .directory-tabs{display:flex;gap:30px}.bookish-home .directory-tabs .tab{padding:8px 0 6px;min-height:44px;border:0;background:none;font:inherit;font-size:16px;color:#6f695c}.bookish-home .directory-stat{margin:0 0 0 auto;text-align:right;font:italic 15px/1.5 var(--font-en,"Source Serif 4",Georgia,serif);color:#6f695c}.bookish-home .directory-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:72px}.bookish-home .directory-row{display:grid;grid-template-columns:76px minmax(0,1fr) 24px;align-items:start;padding:28px 0 26px;border-bottom:1px solid #dcd4c5;text-decoration:none}.bookish-home .directory-row .no{font:300 40px/1 var(--font-en,"Source Serif 4",Georgia,serif);color:#948b78}.bookish-home .directory-row.is-current .no{color:var(--accent-ink,#50563a)}.bookish-home .directory-row .body{min-width:0;display:flex;flex-direction:column}.bookish-home .directory-primary{font:400 26px/1.25 var(--font-en,"Source Serif 4",Georgia,serif);color:#1b1a17;overflow-wrap:anywhere}.bookish-home [data-course-part-panel=foundation] .directory-primary{font:500 22px/1.5 var(--font-cn,"Noto Serif SC","Songti SC","STSong","SimSun",serif)}.bookish-home .directory-row .more{margin-top:8px;font:400 16px/1.5 var(--font-en,"Source Serif 4",Georgia,serif);color:#6f695c;overflow-wrap:anywhere}.bookish-home [data-course-part-panel=foundation] .directory-row .more{font-family:inherit;font-size:14px}.bookish-home .directory-meta{display:flex;flex-wrap:wrap;gap:5px 18px;margin-top:12px;font-size:12px;letter-spacing:.08em;color:#6f695c}.bookish-home .directory-row .go{margin-top:10px;width:20px;height:20px;fill:none;stroke:#1b1a17;stroke-width:1.4}.bookish-home .directory-row .bar{position:absolute;left:0;bottom:-1px;height:2px;width:0;background:var(--accent,#8a9460)}.bookish-home .directory-row.is-current .directory-status{color:var(--accent-ink,#50563a)}.bookish-home .home-footer{display:flex;gap:36px;flex-wrap:wrap;margin-top:72px;padding:28px 0 0;border-top:1px solid #dcd4c5;font-size:14px;color:#6f695c}.bookish-home .home-footer a{min-height:44px;display:inline-flex;align-items:center;color:#5e5a50;text-decoration:none}.bookish-home .home-footer .footer-brand{margin-left:auto;font-family:var(--font-cn,"Songti SC","STSong","SimSun",serif);letter-spacing:.1em}
.bookish-home .word-line .w::after{display:none}.home-word-tip{position:fixed;z-index:110;max-width:min(240px,calc(100vw - 24px));padding:6px 10px;border-radius:3px;background:#1b1a17;color:#f6f2ea;font:500 12px/1.5 -apple-system,BlinkMacSystemFont,"PingFang SC",sans-serif;letter-spacing:.04em;text-align:center;pointer-events:none}.home-word-tip[hidden]{display:none!important}.bookish-home .home-status{font-size:13px;color:#6f695c}.bookish-home .home-compat[hidden]{display:none!important}
@media(max-width:1080px){.bookish-home .home-first{grid-template-columns:minmax(0,1fr);gap:44px}.bookish-home .home-resume,.bookish-home .home-daily{grid-column:auto}.bookish-home .home-daily{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:0 32px;border-top:1px solid #1b1a17;padding-top:26px}.bookish-home .home-daily>.home-kicker{grid-column:1/-1}.bookish-home .daily-plate{grid-column:1;grid-row:2/6;margin:24px 0 0}.bookish-home .daily-plate img{height:100%;min-height:220px}.bookish-home .daily-cells{grid-column:2;margin-top:24px}.bookish-home .today-progress,.bookish-home .home-daily .btn-line,.bookish-home .plan-adjust{grid-column:2}.bookish-home .home-overview>:nth-child(n+2){padding-left:20px}.bookish-home .overview-detail{display:none}.bookish-home .directory-head{gap:26px}.bookish-home .directory-grid{column-gap:36px}}
@media(max-width:680px){.bookish-home{width:calc(100% - 48px);padding-bottom:42px}.bookish-home .home-first{display:block;padding:32px 0 0}.bookish-home .home-kicker{font-size:11px;letter-spacing:.14em;gap:12px}.bookish-home .resume-title{display:block;margin-top:26px}.bookish-home .resume-title h1{font-size:52px;line-height:1.08}.bookish-home .resume-title h1.is-foundation{font-size:38px}.bookish-home .resume-gloss{margin-top:12px;font-size:17px;letter-spacing:.08em}.bookish-home .resume-intro{margin-top:12px;font-size:14px}.bookish-home .resume-words{margin-top:24px;padding:18px 0}.bookish-home .words-meta{font-size:11px;letter-spacing:.08em}.bookish-home .word-line{gap:14px 14px;margin-top:20px;font-size:17px;line-height:22px}.bookish-home .word-line .w{min-height:44px;align-items:center}.bookish-home .word-line .w.is-learned>i{align-self:center;margin-top:-10px}.bookish-home .word-line .w.nx::before{bottom:calc(100% - 6px)}.bookish-home .resume-progress{margin-top:20px}.bookish-home .unit-progress-line{font-size:12px}.bookish-home .unit-representatives,.bookish-home .unit-progress-line .sep{display:none}.bookish-home .home-progress-track{margin-top:10px}.bookish-home .progress-legend{gap:10px 16px;font-size:11px}.bookish-home .resume-actions{display:block;margin-top:26px}.bookish-home .resume-actions .btn-ink{width:100%;min-height:52px;padding:0 14px}.bookish-home .resume-actions .link-u{display:flex;justify-content:center;align-items:center;min-height:44px;width:max-content;margin:8px auto 0;font-size:14px}.bookish-home .home-resume{padding-bottom:28px}.bookish-home .home-daily{display:flex;gap:0;padding:26px 0 30px}.bookish-home .home-daily>.home-kicker{display:none}.bookish-home .daily-mobile-heading{display:flex;align-items:baseline;justify-content:space-between;gap:16px}.bookish-home .daily-mobile-heading h2{margin:0;font:600 21px/1.5 var(--font-cn,"Songti SC","STSong","SimSun",serif);letter-spacing:.06em;color:#1b1a17}.bookish-home .daily-mobile-heading button{min-height:44px;border:0;background:none;padding:0;font:inherit;font-size:13px;color:#6f695c}.bookish-home .daily-plate{margin-top:18px}.bookish-home .daily-plate img{height:150px;min-height:0}.bookish-home .daily-cells{margin-top:20px}.bookish-home .daily-cells .cell{padding:2px 0 14px}.bookish-home .daily-cells .cell+.cell{padding-left:16px}.bookish-home .daily-cells .number{font-size:38px}.bookish-home .daily-cells .caption{font-size:11px;margin-top:6px}.bookish-home .today-progress{margin-top:14px;font-size:11px;gap:12px}.bookish-home .home-daily .btn-line{margin-top:20px;min-height:52px}.bookish-home .home-daily>.plan-adjust{display:none}.bookish-home .home-overview{display:block;border-top-color:#dcd4c5;border-bottom:0}.bookish-home .home-overview>div,.bookish-home .home-overview>a{padding:16px 0!important;gap:12px;border-left:0!important;border-bottom:1px solid #dcd4c5}.bookish-home .overview-number{font-size:28px;min-width:64px}.bookish-home .overview-label{font-size:13px}.bookish-home .overview-detail{display:none}.bookish-home .bookish-directory{margin-top:56px}.bookish-home .directory-head{display:flex;flex-wrap:wrap;gap:6px 24px;padding-bottom:16px}.bookish-home .directory-head h2{font-size:32px;flex-basis:100%;margin-bottom:6px}.bookish-home .directory-tabs{gap:24px}.bookish-home .directory-tabs .tab{font-size:15px}.bookish-home .directory-stat{font-size:12px;max-width:44%;line-height:1.4}.bookish-home .directory-grid{display:block}.bookish-home .directory-row{grid-template-columns:52px minmax(0,1fr);padding:20px 0 18px}.bookish-home .directory-row .no{font-size:30px}.bookish-home .directory-primary{font-size:21px;line-height:1.3}.bookish-home [data-course-part-panel=foundation] .directory-primary{font-size:19px}.bookish-home .directory-row .more{margin-top:5px;font-size:14px}.bookish-home .directory-meta{margin-top:9px;gap:5px 14px;font-size:11px;letter-spacing:.05em}.bookish-home .directory-row .go{display:none}.bookish-home .home-footer{gap:8px 24px;margin-top:42px;padding-top:16px;font-size:13px}.bookish-home .home-footer .footer-brand{margin:0;flex-basis:100%}.bookish-home .btn-ink,.bookish-home .btn-line{letter-spacing:.04em}.bookish-home .home-arrow{width:17px;height:17px}}
@media(max-width:359px){.bookish-home{width:calc(100% - 32px)}.bookish-home .home-kicker{font-size:10px;gap:8px}.bookish-home .resume-title h1{font-size:44px}.bookish-home .resume-title h1.is-foundation{font-size:34px}.bookish-home .resume-gloss{font-size:16px}.bookish-home .word-line{column-gap:12px}.bookish-home .directory-row{grid-template-columns:42px minmax(0,1fr)}.bookish-home .directory-primary{font-size:20px}.bookish-home [data-course-part-panel=foundation] .directory-primary{font-size:18px}.bookish-home .directory-stat{max-width:42%}}
.bookish-home .word-line .w.nx::before{left:50%;width:max-content;white-space:nowrap;transform:translateX(-50%);pointer-events:none}
/* A 44px word target also supplies the mobile row pitch; adding another
   vertical gap would expand the design's roughly 44px rhythm to 58px. */
@media(max-width:680px){.bookish-home .word-line{row-gap:0}.bookish-home .word-line .w{min-width:44px;justify-content:center}}
@media(hover:none){.bookish-home .word-line .w{min-height:44px;min-width:44px;justify-content:center}}


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.bu-text-button{display:inline-block;padding:0;min-height:44px;border:0;background:transparent;font-size:15px;color:#3F3C35;cursor:pointer}.gx .bu-focus-help{display:block;opacity:1;visibility:visible;margin:14px 0 0;font-size:12px;line-height:1.7;color:#6F695C}.gx .bu-hero-figure{grid-column:8 / span 5;margin:0;align-self:start}.gx .bu-hero-plate{height:430px;overflow:hidden}.gx .bu-hero-plate>img{display:block;width:100%;height:100%;object-fit:cover;object-position:center 40%;filter:saturate(.82)}.gx .bu-hero-figure figcaption{margin-top:12px;display:flex;justify-content:space-between;gap:20px;font-family:BookSerif,'Source Serif 4',SerifEN,Georgia,serif;font-style:italic;font-size:13px;color:#6F695C}.gx .bu-section{margin-top:96px}.gx .bu-section-head{display:flex;align-items:baseline;gap:28px;padding-bottom:22px;border-bottom:1px solid #1B1A17}.gx .bu-section-head h2{margin:0;font-family:'Noto Serif SC','Songti 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4',SerifEN,Georgia,serif;font-size:44px;line-height:1;font-weight:300;color:#948B78}.gx .bu-step-state{font-size:12px;line-height:1.6;letter-spacing:.08em;color:#6F695C}.gx .bu-step.on .sn,.gx .bu-step.on .bu-step-state{color:#50563A}.gx .bu-step.is-complete .sn,.gx .bu-step.is-complete .bu-step-state{color:#5C6E3E}.gx .bu-step h3{margin:22px 0 0;font-family:'Noto Serif SC','Songti SC','STSong','SimSun',serif;font-size:20px;font-weight:600;line-height:1.5;color:#1B1A17}.gx .bu-step>p{margin:10px 0 0;font-size:14px;line-height:1.75;color:#5E5A50}.gx .bu-step-link,.gx .bu-step-links{margin-top:auto;padding-top:20px;width:max-content;font-size:14px;line-height:1.8}.gx .bu-step-links{display:flex;gap:22px;flex-wrap:wrap;max-width:100%}.gx .bu-families{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));column-gap:56px}.gx .bu-family-row{display:grid;grid-template-columns:52px minmax(0,1fr) auto;align-items:baseline;gap:0;padding:20px 0 18px;border-bottom:1px solid #DCD4C5;text-decoration:none;min-height:88px}.gx .bu-family-no{font-family:BookSerif,'Source Serif 4',SerifEN,Georgia,serif;font-size:24px;line-height:1;font-weight:300;color:#948B78}.gx .bu-family-body{min-width:0;display:flex;flex-direction:column}.gx .bu-family-title{font-family:BookSerif,'Source Serif 4',SerifEN,Georgia,serif;font-size:19px;line-height:1.3;color:#1B1A17;overflow-wrap:anywhere}.gx .bu-family-title-zh{font-family:'Noto Serif SC','Songti SC','STSong','SimSun',serif;font-size:17px}.gx .bu-family-gloss{margin-top:4px;font-size:13px;line-height:1.5;color:#6F695C}.gx .bu-family-count{font-size:12px;color:#6F695C;padding-left:8px;white-space:nowrap}.gx .bu-family-bar{position:absolute;left:0;bottom:-1px;height:2px;width:0;background:#8A9460}.gx .bu-family-row.is-complete .bu-family-no,.gx .bu-family-row.is-complete .bu-family-count{color:#5C6E3E}.gx .bu-family-row.is-complete .bu-family-bar{background:#5C6E3E}.gx .bu-family-row.is-current .bu-family-no,.gx .bu-family-row.is-current .bu-family-count{color:#50563A}.gx .bu-maps{margin-top:32px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:40px 32px}.gx .bu-map-link{display:flex;flex-direction:column;text-decoration:none}.gx .bu-map-link[hidden]{display:none}.gx .bu-map-plate{display:block;border:1px solid #DCD4C5;background:#FBF8F2;overflow:hidden}.gx .bu-map-plate>img{display:block;width:100%;height:230px;object-fit:cover;object-position:top}.gx .bu-map-caption{margin-top:12px;display:flex;justify-content:space-between;align-items:baseline;gap:10px}.gx .bu-map-caption>span:first-child{font-family:BookSerif,'Source Serif 4',SerifEN,Georgia,serif;font-size:17px;color:#1B1A17}.gx .bu-map-caption>.num{font-size:12px;letter-spacing:.12em;color:#6F695C;white-space:nowrap}.gx .bu-footer{margin-top:96px;padding:28px 0 48px;border-top:1px solid #DCD4C5;display:flex;flex-wrap:wrap;gap:24px 36px;font-size:14px;color:#6F695C}.gx .bu-footer a{color:#5E5A50;text-decoration:none}.gx .bu-footer>span{margin-left:auto;font-family:'Noto Serif SC','Songti SC','STSong','SimSun',serif;letter-spacing:.1em}.gx .bu-mobile-links{display:none}.gx .bu-foundation-title{font-family:'Noto Serif SC','Songti SC','STSong','SimSun',serif;font-size:35px;line-height:1.5;letter-spacing:.04em;margin-top:24px}.gx .bu-topic{display:block}.gx .bu-extra-topics{display:flex;flex-wrap:wrap;gap:6px 20px;margin:14px 0 0;font-size:13px;line-height:1.8;color:#6F695C}.gx .bu-topic-small{display:block}.gx .bu-foundation-title~.bu-theme{font-size:17px;letter-spacing:.06em}
@media(max-width:1080px){.gx.bu-unit{width:calc(100% - 64px)}.gx .bu-title{font-size:58px}.gx .bu-hero{column-gap:20px}.gx .bu-hero-copy{grid-column:1 / span 7}.gx .bu-hero-figure{grid-column:9 / span 4}.gx .bu-hero-plate{height:400px}.gx .bu-kicker{letter-spacing:.1em;gap:12px}.gx .bu-section-head{gap:20px}.gx .bu-section-head>p{max-width:340px}.gx .bu-families{column-gap:32px}.gx .bu-family-row{grid-template-columns:38px minmax(0,1fr) auto}.gx .bu-step{padding-left:18px;padding-right:18px}.gx .bu-section-head h2{font-size:28px}.gx .bu-founded-title,.gx .bu-foundation-title{font-size:30px}.gx .bu-map-plate>img{height:200px}}
@media(max-width:680px){.gx.bu-unit{width:auto;margin:0 24px;padding-bottom:calc(64px + env(safe-area-inset-bottom,0px))}.gx .bu-breadcrumb{display:none}.gx .bu-hero{display:flex;flex-direction:column;padding:0 0 34px;gap:0}.gx .bu-hero-figure{order:-1;width:calc(100% + 48px);margin:0 -24px 0;align-self:auto}.gx .bu-hero-plate{height:190px}.gx .bu-hero-figure figcaption{display:none}.gx .bu-hero-copy{padding-top:28px}.gx .bu-kicker{font-size:11px;letter-spacing:.2em;gap:10px}.gx .bu-kicker>span:first-child{display:none}.gx .bu-kicker-rule{display:none}.gx .bu-kicker>span:last-child::before{content:'词族篇 · '}.gx.bu-unit[data-bookish-unit^='foundation'] .bu-kicker>span:last-child::before{content:'基础篇 · '}.gx .bu-title{font-size:44px;margin-top:16px;line-height:1.05;letter-spacing:-.015em;overflow-wrap:anywhere}.gx .bu-title-dot{margin:0 .14em}.gx .bu-theme{margin-top:12px;font-size:17px;letter-spacing:.12em;line-height:1.6}.gx .bu-intro{display:none}.gx .bu-progress{margin-top:24px}.gx .bu-progress-label{font-size:12px}.gx .bu-progress-label b{font-size:15px}.gx .bu-progress-track{margin-top:10px}.gx .bu-progress-legend{font-size:11px;gap:16px}.gx .bu-progress-legend i{margin-right:6px}.gx .bu-hero-actions{margin-top:24px;display:flex;flex-direction:column;gap:2px;align-items:stretch}.gx .bu-resume{height:52px;padding:0 16px;font-size:15px;gap:12px}.gx .bu-hero-actions>.bu-text-button{align-self:center;margin-top:6px;font-size:14px}.gx .bu-focus-help{display:none}.gx .bu-path{border-top:1px solid #1B1A17;padding-top:24px}.gx .bu-section-head{gap:14px;padding-bottom:14px;justify-content:space-between;align-items:baseline}.gx .bu-section-head h2{font-size:23px}.gx .bu-section-head>p{display:none}.gx .bu-section-head>.link-u{font-size:13px;line-height:1.8;margin-left:auto}.gx .bu-path-head{padding-bottom:0}.gx .bu-en-note{font-size:13px}.gx .bu-steps{display:block;margin-top:16px;border-top:0;border-bottom:0}.gx .bu-step,.gx .bu-step:first-child,.gx .bu-step:last-child{display:grid;grid-template-columns:40px minmax(0,1fr) auto;grid-template-rows:auto auto auto;padding:16px 0;border-left:0;border-bottom:1px solid #DCD4C5;align-items:baseline;column-gap:0}.gx .bu-step-head{display:contents}.gx .bu-step .sn{grid-column:1;grid-row:1;font-size:26px}.gx .bu-step-state{grid-column:3;grid-row:1;font-size:11px;letter-spacing:.04em;text-align:right;padding-left:8px}.gx .bu-step h3{grid-column:2;grid-row:1;margin:0;font-size:17px}.gx .bu-step>p{grid-column:2 / 4;grid-row:2;margin:4px 0 0;font-size:13px;line-height:1.6}.gx .bu-step-link,.gx .bu-step-links{grid-column:2 / 4;grid-row:3;padding:0;margin-top:8px;font-size:12px;line-height:1.8;min-height:28px;display:flex;align-items:center}.gx .bu-step::before{top:auto;bottom:-1px}.gx .bu-section{margin-top:44px}.gx .bu-families{grid-template-columns:1fr;column-gap:0}.gx .bu-family-row{grid-template-columns:40px minmax(0,1fr) auto;padding:14px 0 13px;min-height:64px}.gx .bu-family-no{font-size:24px}.gx .bu-family-title{font-size:17px}.gx .bu-family-title-zh{font-size:16px}.gx .bu-family-gloss{margin-top:2px;font-size:12px}.gx .bu-family-count{font-size:11px}.gx .bu-families+.bu-mobile-links{display:flex;margin-top:22px;justify-content:space-between;font-size:14px}.gx .bu-section-head>a[href$='reference.html']{display:none}.gx .bu-maps{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 16px;margin-top:24px}.gx .bu-map-plate>img{height:150px}.gx .bu-map-caption{flex-direction:column;gap:3px;margin-top:8px}.gx .bu-map-caption>span:first-child{font-size:15px}.gx .bu-map-caption>.num{font-size:11px;letter-spacing:.05em}.gx .bu-footer{margin-top:44px;padding:24px 0 32px;gap:20px;font-size:13px}.gx .bu-footer>span{width:100%;margin:0;font-size:12px}.gx .bu-desktop-only{display:none}.gx .bu-foundation-title{font-size:27px;line-height:1.45;letter-spacing:.04em;margin-top:16px}.gx .bu-foundation-title~.bu-theme{font-size:15px;letter-spacing:.06em}.gx .bu-extra-topics{margin-top:12px;display:grid;grid-template-columns:1fr 1fr;font-size:12px;gap:6px 18px}.gx .bu-resume-word{max-width:160px}}

/* Bookish ui300: scoped to the notebook, active screenings and video lists. */
.bookish-subpage{
  --b-paper:#F6F2EA;--b-light:#FBF8F2;--b-hover:#EFE9DD;--b-ink:#1B1A17;
  --b-text:#3F3C35;--b-muted:#5E5A50;--b-weak:#6F695C;--b-line:#DCD4C5;
  --b-accent:#8A9460;--b-accent-ink:#50563A;--b-known:#5C6E3E;--b-vague:#C49A4A;--b-unknown:#B0614A;
  --b-serif:'Source Serif 4','SerifEN',Georgia,'Songti SC','STSong',serif;
  --b-title:'Noto Serif SC','Songti SC','STSong','SimSun',serif;
  --b-ui:-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif;
  --b-ease:cubic-bezier(.2,.7,.2,1);
  --paper:var(--b-paper);--canvas:var(--b-paper);--white:var(--b-light);--ink:var(--b-ink);
  --muted:var(--b-weak);--line:var(--b-line);--olive:var(--b-accent-ink);--display:var(--b-title);
  margin:0;background:var(--b-paper)!important;background-image:none!important;color:var(--b-text);font-family:var(--b-ui);
}
.bookish-subpage :is(button,input,select,textarea){font-family:var(--b-ui)}
.bookish-subpage :is(h1,h2){font-family:var(--b-title);color:var(--b-ink);font-weight:600}
.bookish-subpage :is(a,button,input,select,summary){-webkit-tap-highlight-color:transparent;touch-action:manipulation}
.bookish-subpage :is(button,input,select,summary){min-height:44px}
.bookish-subpage :focus-visible{outline:2px solid var(--b-accent)!important;outline-offset:4px!important;border-radius:2px}
.bookish-subpage ::selection{background:#D8D8C3;color:var(--b-ink)}
.bookish-subpage .num{font-variant-numeric:tabular-nums lining-nums}
.bookish-subpage :is(.nb-shell,#pageShell,.course-video-main){box-sizing:border-box;width:min(1200px,calc(100% - 64px));max-width:1200px;margin:0 auto;padding:62px 0 calc(60px + env(safe-area-inset-bottom));background:none;border:0;box-shadow:none}
.bookish-subpage .bookish-subhead{padding:0!important;margin:0 0 30px;background:none!important;background-image:none!important;border:0!important;border-radius:0!important;box-shadow:none!important}
.bookish-subpage .bookish-kicker{display:flex;align-items:center;gap:14px;max-width:540px;margin:0 0 25px;color:var(--b-weak);font:400 12px/1.5 var(--b-ui);letter-spacing:.16em}
.bookish-subpage .bookish-kicker i{height:1px;min-width:32px;flex:1;background:var(--b-line)}
.bookish-subpage .bookish-kicker [lang=en]{letter-spacing:.1em}
.bookish-subpage .bookish-subhead h1{display:block;margin:0 0 12px;font:600 clamp(34px,3.7vw,46px)/1.35 var(--b-title);letter-spacing:.04em}
.bookish-subpage :is(.bookish-subhead-copy,.bookish-subhead .lead,.course-video-intro){max-width:760px;margin:0;color:var(--b-muted);font:400 15px/1.85 var(--b-ui)}
.bookish-subpage :is(.bookish-subhead h1,.bookish-kicker,.bookish-subhead-copy,.bookish-subhead .lead){text-shadow:none}
.bookish-subpage :is(button,.file-label,.primary-btn,.ghost-btn,.explore-unit-link){border-radius:2px;box-shadow:none;transition:background-color .25s var(--b-ease),color .25s var(--b-ease),transform .15s var(--b-ease)}
.bookish-subpage :is(button.primary,.primary-btn){background:var(--b-ink);border-color:var(--b-ink);color:var(--b-paper)}
.bookish-subpage :is(button,.file-label,.primary-btn,.ghost-btn):active{transform:translateY(1px)}
.bookish-subpage :is(button:disabled,[disabled]){cursor:default}
.bookish-subpage :is(.muted,.status-line,.save-note){color:var(--b-weak)}

/* The notebook keeps native panels, filters, backup controls and word actions. */
.bookish-notebook .nb-head{align-items:flex-start;gap:32px}
.bookish-notebook .nb-head>div{min-width:0;flex:1}
.bookish-notebook .nb-tools{margin-top:0}
.bookish-notebook .nb-tools>summary{min-height:44px;padding:10px 14px;border:1px solid var(--b-line);border-radius:2px;background:transparent;font-size:13px;color:var(--b-muted)}
.bookish-notebook .backup-actions{border-radius:2px;background:var(--b-light);border-color:var(--b-line);box-shadow:0 12px 28px #1b1a1710}
.bookish-notebook .sync-strip{margin:22px 0 28px;min-height:44px}
.bookish-notebook .sync-strip button{min-height:44px;padding:5px 12px;color:var(--b-muted)}
.bookish-notebook .nb-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;padding:0;border-top:1px solid var(--b-ink);border-bottom:1px solid var(--b-line)}
.bookish-notebook .nb-stats>div{display:flex;flex-direction:column-reverse;justify-content:flex-end;align-items:flex-start;gap:8px;padding:19px 24px 17px;border-left:1px solid var(--b-line)}
.bookish-notebook .nb-stats>div:first-child{padding-left:0;border-left:0}
.bookish-notebook .nb-stats strong{font:400 37px/1 var(--b-serif);font-variant-numeric:tabular-nums lining-nums;color:var(--b-ink)}
.bookish-notebook .nb-stats>div:first-child strong{color:#A4523A}
.bookish-notebook .nb-stats span{min-height:0;color:var(--b-weak);font:400 12px/1.5 var(--b-ui);letter-spacing:.08em}
.bookish-notebook .nb-tabs{gap:32px;margin-top:27px;border-bottom:1px solid var(--b-line);overflow:visible}
.bookish-notebook .nb-tabs button{position:relative;min-height:48px;margin:0;padding:10px 0 13px;border:0!important;background:none!important;color:var(--b-weak);font:400 15px/1.5 var(--b-ui);border-radius:0}
.bookish-notebook .nb-tabs button::after{content:'';position:absolute;bottom:-1px;left:0;right:0;height:2px;background:var(--b-accent);transform:scaleX(0);transform-origin:left;transition:transform .35s var(--b-ease)}
.bookish-notebook .nb-tabs button[aria-current]{color:var(--b-ink);font-weight:500}
.bookish-notebook .nb-tabs button[aria-current]::after{transform:scaleX(1)}
.bookish-notebook .nb-panel{padding:28px 0}
.bookish-notebook .practice-banner{display:flex;gap:28px;align-items:center;justify-content:space-between;margin:0 0 28px;padding:0 0 26px;background:none;border:0;border-bottom:1px solid var(--b-line);border-radius:0;box-shadow:none}
.bookish-notebook .practice-banner .eyebrow{font:400 12px/1.5 var(--b-ui);letter-spacing:.12em;color:var(--b-weak)}
.bookish-notebook .practice-banner h2{margin:9px 0;font-size:24px}
.bookish-notebook .practice-banner p:not(.eyebrow){color:var(--b-muted);font-size:14px}
.bookish-notebook .practice-actions{display:flex;flex-direction:column;gap:4px;min-width:232px}
.bookish-notebook .practice-actions .primary{min-height:52px;padding:13px 18px;font-size:15px;letter-spacing:.03em}
.bookish-notebook .practice-actions button:not(.primary){min-height:44px;border-color:transparent;background:transparent;color:var(--b-muted)}
.bookish-notebook .filter-row{gap:14px}
.bookish-notebook .filter-row label{color:var(--b-weak);font-size:12px}
.bookish-notebook .filter-row :is(input,select){height:44px;border:1px solid var(--b-line);border-radius:2px;background:var(--b-light);font-size:14px}
.bookish-notebook .filter-row>button{min-height:44px;background:transparent;border-color:var(--b-line);border-radius:2px;font-size:13px}
.bookish-notebook #listCount{margin:20px 0 7px;color:var(--b-weak);font-size:12px}
.bookish-notebook .word-list{display:block;border-top:1px solid var(--b-line)}
.bookish-notebook .word-row{position:relative;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:start;gap:8px 28px;min-width:0;margin:0;padding:21px 0 17px;border:0;border-bottom:1px solid var(--b-line);border-radius:0;background:none;box-shadow:none}
.bookish-notebook .word-row::before{content:'';position:absolute;inset:0 -16px;z-index:-1;background:var(--b-hover);opacity:0;transition:opacity .3s var(--b-ease)}
.bookish-notebook .word-row .word-fold{display:none!important}
.bookish-notebook .bookish-word-copy{grid-column:1;grid-row:1 / span 2;min-width:0}
.bookish-notebook .word-title{margin:0;padding:0;font:400 26px/1.3 var(--b-serif);color:var(--b-ink);overflow-wrap:anywhere}
.bookish-notebook .word-title sup{font-size:.6em;margin-left:1px}
.bookish-notebook .bookish-short-meaning{margin:6px 0 0;color:var(--b-muted);font-size:14px;line-height:1.75}
.bookish-notebook .bookish-short-meaning:empty{display:none}
.bookish-notebook .word-meta{margin:5px 0 0;color:var(--b-weak);font-size:12px;line-height:1.75}
.bookish-notebook .word-reason{grid-column:2;grid-row:1;justify-self:end;display:inline-flex;gap:7px;align-items:center;padding-top:5px;color:var(--b-muted);font-size:12px;white-space:nowrap}
.bookish-notebook .word-reason::before{flex:none;width:6px;height:6px;background:var(--b-accent)}
.bookish-notebook .word-reason.unfamiliar{color:#9A4F43}
.bookish-notebook .word-reason.unfamiliar::before{background:var(--b-unknown)}
.bookish-notebook .word-reason.vague{color:#86621F}
.bookish-notebook .word-reason.vague::before{background:var(--b-vague)}
.bookish-notebook .word-review-meta{grid-column:2;grid-row:2;justify-content:flex-end;gap:10px;color:var(--b-weak);font-size:12px}
.bookish-notebook .row-actions{grid-column:1 / -1;display:flex;flex-wrap:wrap;justify-content:flex-start;gap:6px 18px;margin-top:3px;padding:0;border:0}
.bookish-notebook .row-actions>a{display:inline-flex;align-items:center;min-height:44px;margin:0;color:var(--b-muted);font-size:12px}
.bookish-notebook .row-actions button{min-height:44px;padding:8px 12px;font-size:12px;border:1px solid var(--b-line);background:transparent}
.bookish-notebook .word-more>summary{min-height:44px;min-width:44px;border-radius:2px;color:var(--b-muted)}
.bookish-notebook .word-more>div{top:44px;border-radius:2px;background:var(--b-light)}
.bookish-notebook .word-detail{grid-column:1 / -1;width:100%;padding:0;border:0}
.bookish-notebook .word-detail>summary{min-height:44px;padding:6px 0;color:var(--b-accent-ink);font-size:13px}
.bookish-notebook .word-detail-body{padding:14px 0 4px;border-top:1px solid var(--b-line)}
.bookish-notebook .word-detail-body:empty{display:none}
.bookish-notebook .card-meaning>a,.bookish-notebook .card-meaning>details.muted a{display:inline-flex;align-items:center;min-height:44px;min-width:44px;max-width:100%;white-space:normal;overflow-wrap:anywhere;vertical-align:middle}
.bookish-notebook .word-focus-summary{margin-top:10px;padding:5px 0 5px 12px;border-left:2px solid var(--b-accent);border-radius:0;background:none;font-size:13px;color:var(--b-muted)}
.bookish-notebook .empty{border:0;border-radius:0;background:none;padding:48px 12px;color:var(--b-weak)}
.bookish-notebook .empty-fold{display:none}
.bookish-notebook .empty strong{font:600 24px/1.6 var(--b-title);color:var(--b-ink)}
.bookish-notebook :is(.focus-card,.round-summary,.quiz-recovery){border-radius:2px;box-shadow:none;background:var(--b-light)}
.bookish-notebook .howto{border-color:var(--b-line);color:var(--b-muted)}
.bookish-notebook .nb-shell>footer{color:var(--b-weak);line-height:1.85;border-color:var(--b-line)}

/* Assessment: these are the original word buttons and runner controls. */
.bookish-screening #pageShell{padding-top:62px}
.bookish-screening .hero{display:block}
.bookish-screening .hero-copy{margin:12px 0 0;color:var(--b-weak);font-size:13px}
.bookish-screening .hero-copy span{font-family:var(--b-serif);font-size:16px;font-variant-numeric:tabular-nums lining-nums}
.bookish-screening .hero .session-panel{display:block;max-width:none;margin:27px 0 0;padding:0;border:0;border-radius:0;background:none;box-shadow:none;color:var(--b-text)}
.bookish-screening .hero .session-panel>div:first-child{display:none}
.bookish-screening .panel-actions{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.bookish-screening .panel-actions button{min-height:46px;padding:11px 18px;font-size:14px;line-height:1.5;border:1px solid var(--b-line);background:transparent;color:var(--b-muted);border-radius:2px}
.bookish-screening .panel-actions #startSession{background:var(--b-ink);color:var(--b-paper);border-color:var(--b-ink)}
.bookish-screening .controls{display:flex;flex-wrap:wrap;align-items:center;gap:12px 22px;padding:15px 0;margin:28px 0 16px;border:0;border-top:1px solid var(--b-ink);border-bottom:1px solid var(--b-line);border-radius:0;background:none;box-shadow:none}
.bookish-screening .controls .search-wrap{display:flex;align-items:center;gap:12px;flex:1;min-width:250px;color:var(--b-weak);font-size:13px}
.bookish-screening .search-wrap input{box-sizing:border-box;width:100%;min-height:44px;padding:9px 12px;border:1px solid var(--b-line);border-radius:2px;background:var(--b-light);font:400 14px/1.5 var(--b-ui)}
.bookish-screening .bookish-control-label{font-size:13px;color:var(--b-weak)}
.bookish-screening .mode-tabs{display:flex;gap:20px;padding:0;border:0;border-radius:0;background:none;box-shadow:none}
.bookish-screening .mode-tab{position:relative;min-height:44px;padding:10px 0;border:0!important;border-radius:0;background:none!important;box-shadow:none!important;color:var(--b-weak);font:400 14px/1.5 var(--b-ui)}
.bookish-screening .mode-tab::after{content:'';position:absolute;left:0;right:0;bottom:1px;height:2px;background:var(--b-accent);transform:scaleX(0);transition:transform .35s var(--b-ease)}
.bookish-screening .mode-tab.active{color:var(--b-ink)}
.bookish-screening .mode-tab.active::after{transform:scaleX(1)}
.bookish-screening #clearMarks{min-height:44px;margin-left:auto;padding:8px 10px;border-color:transparent;background:none;color:var(--b-weak);font-size:12px}
.bookish-screening #pageShell>.status-line{margin:8px 0;color:var(--b-weak);font-size:12px;line-height:1.75}
.bookish-screening #statusLine:empty{display:none}
.bookish-screening .word-grid{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 0;padding:0;border:0;background:none}
.bookish-screening .word-btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:0;width:auto;min-width:0;min-height:44px;padding:9px 18px;border:1px solid var(--b-line);border-radius:2px;background:var(--b-light);box-shadow:none;color:var(--b-text);transform:none;transition:border-color .25s var(--b-ease),transform .3s var(--b-ease)}
.bookish-screening .word-btn .word-index{display:none}
.bookish-screening .word-label{font:400 20px/1.25 var(--b-serif);letter-spacing:0;overflow-wrap:anywhere}
.bookish-screening .word-label sup{font-size:.6em;margin-left:1px}
.bookish-screening :is(.word-btn,.auditory-card)[data-bookish-familiarity=known]{border-color:var(--b-known);box-shadow:inset 0 -2px 0 var(--b-known)}
.bookish-screening :is(.word-btn,.auditory-card)[data-bookish-familiarity=vague]{border-color:var(--b-vague);box-shadow:inset 0 -2px 0 var(--b-vague)}
.bookish-screening :is(.word-btn,.auditory-card)[data-bookish-familiarity=unfamiliar],.bookish-screening .word-btn.unknown{border-color:var(--b-unknown);box-shadow:inset 0 -2px 0 var(--b-unknown);background:var(--b-light);color:var(--b-text)}
.bookish-screening .auditory-card{display:flex;align-items:center;gap:12px;min-height:64px;padding:10px 14px;border:1px solid var(--b-line);border-radius:2px;background:var(--b-light);box-shadow:none}
.bookish-screening .auditory-card .word-index{font:400 18px/1 var(--b-serif);color:var(--b-weak)}
.bookish-screening .auditory-card :is(.audio-play,.show-word-btn){min-height:44px;border-radius:2px;border-color:var(--b-line);background:transparent;color:var(--b-muted)}
.bookish-screening .bookish-screen-legend{display:flex;flex-wrap:wrap;gap:14px 24px;align-items:center;margin:28px 0 0;font-size:12px;color:var(--b-weak)}
.bookish-screening .bookish-screen-legend>span{display:inline-flex;align-items:center;gap:7px}
.bookish-screening .bookish-screen-legend i{width:6px;height:6px;border-radius:50%;background:var(--b-line)}
.bookish-screening .bookish-screen-legend i.known{background:var(--b-known)}
.bookish-screening .bookish-screen-legend i.vague{background:var(--b-vague)}
.bookish-screening .bookish-screen-legend i.unfamiliar{background:var(--b-unknown)}
.bookish-screening #bookishMarkedCount{margin-left:auto;font-size:14px;font-family:var(--b-serif)}
.bookish-screening .bookish-screen-note{margin:12px 0 0;color:var(--b-weak);font-size:12px;line-height:1.75}

/* Video: retain every original poster, duration, caption label and filter hook. */
.bookish-video .course-video-hero .unit-kicker{margin:12px 0 0;font:400 12px/1.75 var(--b-ui);letter-spacing:.06em;color:var(--b-weak)}
.bookish-video .course-video-hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:16px}
.bookish-video .course-video-hero-actions a{display:inline-flex;align-items:center;min-height:44px;padding:0;border:0;border-radius:0;background:none;color:var(--b-muted);font-size:13px;text-decoration:underline;text-underline-offset:5px;text-decoration-color:#BDB4A3}
.bookish-video :is(.video-unit-explore-callout,.explore-controls,.explore-recommend,.explore-guide){margin:28px 0;padding:22px 0;border:0;border-top:1px solid var(--b-ink);border-bottom:1px solid var(--b-line);border-radius:0;background:none;box-shadow:none}
.bookish-video .video-unit-explore-callout{display:flex;align-items:center;justify-content:space-between;gap:24px}
.bookish-video :is(.video-unit-explore-callout,.course-video-section,.explore-section-head,.explore-recommend) h2{font:600 25px/1.5 var(--b-title);color:var(--b-ink)}
.bookish-video .video-unit-explore-callout p{margin:6px 0 0;color:var(--b-muted);font-size:14px}
.bookish-video .video-unit-explore-callout>.explore-unit-link{flex:none;min-height:46px;display:inline-flex;align-items:center;padding:10px 16px;background:var(--b-ink);border-color:var(--b-ink);color:var(--b-paper);font:400 14px/1.5 var(--b-ui)}
.bookish-video .course-video-section{margin-top:36px;padding:0;border:0;border-radius:0;background:none;box-shadow:none}
.bookish-video .course-video-section>h2{padding-bottom:18px;border-bottom:1px solid var(--b-ink)}
.bookish-video .explore-grid{display:block;margin-top:0;border-top:1px solid var(--b-ink)}
.bookish-video .course-video-section>h2+.explore-grid{border-top:0}
.bookish-video .explore-card{position:relative;display:grid;grid-template-columns:190px minmax(0,1fr);gap:26px;align-items:start;min-width:0;padding:25px 0;margin:0;border:0;border-bottom:1px solid var(--b-line);border-radius:0;background:none;box-shadow:none}
.bookish-video .explore-card.bookish-featured{grid-template-columns:minmax(280px,1fr) minmax(0,1fr);gap:36px;padding:30px 0}
.bookish-video .explore-card.is-expanded{grid-column:auto}
.bookish-video .explore-card.is-expanded>.explore-poster{margin:0;border-radius:0}
.bookish-video .explore-poster{width:100%;border-radius:0;aspect-ratio:16/9;background:#E7E0D2;overflow:hidden}
.bookish-video .explore-poster>img{transition:transform 1.6s var(--b-ease),filter .8s ease;filter:saturate(.88)}
.bookish-video .explore-poster::after{width:30px;height:30px;right:10px;top:10px;border-radius:0;background:#1B1A17B0}
.bookish-video .explore-cover-fallback{background:#E7E0D2!important;color:var(--b-muted);padding:16px}
.bookish-video .explore-cover-fallback::before{display:none}
.bookish-video .explore-cover-fallback strong{font:600 21px/1.5 var(--b-title)}
.bookish-video .explore-cover-state{color:var(--b-weak);font-size:12px}
.bookish-video .explore-duration{right:10px;bottom:10px;padding:3px 7px;border-radius:0;background:#1B1A17CF;color:var(--b-paper);font:400 15px/1.3 var(--b-serif);font-variant-numeric:tabular-nums lining-nums}
.bookish-video .explore-info{min-width:0;padding:0}
.bookish-video .explore-info h3{margin:9px 0 8px;font:400 24px/1.4 var(--b-serif);color:var(--b-ink)}
.bookish-video .bookish-featured .explore-info h3{font-size:29px}
.bookish-video .explore-meta{gap:8px 16px;font:400 12px/1.5 var(--b-ui);color:var(--b-weak)}
.bookish-video .explore-meta span,.bookish-video .course-video-main .explore-cefr{padding:0;border:0;border-radius:0;background:none!important;color:var(--b-weak);font-weight:400}
.bookish-video .explore-interest{margin:7px 0 10px;font:400 14px/1.85 var(--b-ui);color:var(--b-muted)}
.bookish-video :is(.explore-source,.explore-notice,.explore-caption-hint,.explore-caption-guide,.explore-recommend-summary,.explore-pick p){color:var(--b-weak);line-height:1.85}
.bookish-video .explore-caption{padding:0;border:0;border-radius:0;background:none;color:var(--b-muted);font:400 12px/1.7 var(--b-ui)}
.bookish-video .explore-coverage{font:400 12px/1.75 var(--b-ui);color:var(--b-accent-ink);margin:6px 0}
.bookish-video .explore-actions{gap:10px 14px;margin-top:12px}
.bookish-video .explore-actions :is(a,button){display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:9px 14px;border:1px solid var(--b-line);border-radius:2px;background:transparent;color:var(--b-muted);font:400 13px/1.5 var(--b-ui)}
.bookish-video .explore-actions a:first-child{background:var(--b-ink);border-color:var(--b-ink);color:var(--b-paper)}
.bookish-video .explore-more-info{margin-top:5px}
.bookish-video .explore-more-info>summary{min-height:44px;display:flex;align-items:center;cursor:pointer;color:var(--b-weak);font-size:12px;line-height:1.6}
.bookish-video .explore-more-info[open]{padding-bottom:12px}
.bookish-video .explore-more-info p{font-size:12px;line-height:1.85}
.bookish-video .course-video-main .explore-cefr-source,.bookish-video .explore-secondary-actions a,.bookish-video .explore-all-unit-tags a{display:inline-flex;align-items:center;min-height:44px;min-width:44px;max-width:100%;white-space:normal;overflow-wrap:anywhere;vertical-align:middle}
.bookish-video .explore-detail{border-top:1px solid var(--b-line);margin-top:14px;padding-top:14px}
.bookish-video .explore-word{border-color:var(--b-line);border-radius:2px;background:var(--b-light)}
.bookish-video .explore-word strong{font-family:var(--b-serif);font-weight:400;font-size:18px}
.bookish-video .explore-word small{color:var(--b-weak)}
.bookish-video .explore-toolbar{display:flex;gap:16px;align-items:center}
.bookish-video .explore-search{flex:1;min-width:0}
.bookish-video :is(.explore-controls input[type=search],.explore-controls select,.explore-recommend select){box-sizing:border-box;min-height:44px;padding:10px 12px;border:1px solid var(--b-line);border-radius:2px;background:var(--b-light);color:var(--b-text);font:400 14px/1.5 var(--b-ui)}
.bookish-video .explore-search input{width:100%}
.bookish-video :is(.explore-controls button,.explore-recommend button,.explore-more){min-height:44px;padding:10px 14px;border:1px solid var(--b-line);border-radius:2px;background:transparent;color:var(--b-muted);font:400 13px/1.5 var(--b-ui)}
.bookish-video .explore-topic-tabs{display:flex;flex-wrap:wrap;gap:8px 24px;margin:18px 0}
.bookish-video .explore-topic-tabs button{position:relative;min-height:44px;padding:9px 0;border:0;background:none!important;border-radius:0;color:var(--b-weak)}
.bookish-video .explore-topic-tabs button[aria-pressed=true]{color:var(--b-ink);box-shadow:inset 0 -2px 0 var(--b-accent)}
.bookish-video .explore-options{display:flex;gap:24px;align-items:start;flex-wrap:wrap}
.bookish-video .explore-options>details{min-width:0;flex:1;margin:0;padding:0;border:0;border-top:1px solid var(--b-line);border-radius:0;background:none}
.bookish-video .explore-options summary{min-height:44px;padding:8px 0;color:var(--b-muted);font-size:13px;font-weight:400}
.bookish-video .explore-filter-row{gap:14px;padding:12px 0}
.bookish-video .explore-filter-row label,.bookish-video .explore-controls legend{font-size:12px;font-weight:400;color:var(--b-weak)}
.bookish-video .explore-units label{min-height:44px;padding:8px 10px;border-color:var(--b-line);border-radius:2px;background:transparent;color:var(--b-muted)}
.bookish-video .explore-units input{accent-color:var(--b-accent-ink)}
.bookish-video :is(.explore-selected,.explore-active-filters,.explore-section-head p){font-size:12px;color:var(--b-weak)}
.bookish-video .explore-recommend-list{display:block}
.bookish-video .explore-pick{display:grid;grid-template-columns:180px minmax(0,1fr);gap:24px;padding:20px 0;border:0;border-top:1px solid var(--b-line);border-radius:0;background:none}
.bookish-video .explore-pick .explore-info{padding:0}
.bookish-video .explore-pick h3{font-size:23px}
.bookish-video .explore-empty{padding:24px 0;border:0;border-radius:0;background:none;color:var(--b-weak)}
.bookish-video .explore-more{display:block;margin:26px auto 0}

@media(hover:hover){
  .bookish-subpage :is(button.primary,.primary-btn):hover{background:#2E2B26;color:var(--b-paper);box-shadow:0 10px 24px -14px #1B1A178C}
  .bookish-notebook .nb-tabs button:hover{color:var(--b-ink)}
  .bookish-notebook .nb-tabs button:hover::after{transform:scaleX(.4)}
  .bookish-notebook .nb-tabs button[aria-current]:hover::after{transform:scaleX(1)}
  .bookish-notebook .word-row:hover::before{opacity:1}
  .bookish-notebook :is(.row-actions button,.nb-tools>summary,.filter-row>button):hover{background:var(--b-hover);border-color:var(--b-ink)}
  .bookish-screening .word-btn:hover{border-color:var(--b-ink);background:var(--b-light);transform:translateY(-1px)}
  .bookish-screening .mode-tab:hover{color:var(--b-ink)}
  .bookish-video .explore-poster:hover>img{transform:scale(1.04);filter:saturate(1)}
  .bookish-video .explore-actions :is(a,button):hover{background:var(--b-ink);border-color:var(--b-ink);color:var(--b-paper)}
  .bookish-video .explore-topic-tabs button:hover{color:var(--b-ink)}
}
@media(hover:none){
  .bookish-subpage button:hover{box-shadow:none}
  .bookish-notebook :is(.row-actions button,.nb-tools>summary,.filter-row>button):hover{background:transparent;border-color:var(--b-line)}
  .bookish-notebook .word-more>summary:hover{background:none}
  .bookish-screening .word-btn:hover{transform:none;background:var(--b-light)}
  .bookish-video :is(.explore-controls button,.explore-recommend button,.explore-more,.explore-open):hover{background:transparent}
}
@media(max-width:1080px){
  .bookish-screening .controls .search-wrap{flex-basis:100%}
  .bookish-video .explore-card.bookish-featured{gap:26px}
}
@media(max-width:680px){
  .bookish-subpage :is(.nb-shell,#pageShell,.course-video-main){width:calc(100% - 40px);padding-top:34px;padding-bottom:calc(90px + env(safe-area-inset-bottom))}
  .bookish-subpage .bookish-subhead{margin-bottom:25px}
  .bookish-subpage .bookish-kicker{gap:12px;margin-bottom:22px;font-size:11px;letter-spacing:.12em}
  .bookish-subpage .bookish-subhead h1{font-size:34px}
  .bookish-subpage :is(.bookish-subhead-copy,.bookish-subhead .lead,.course-video-intro){font-size:14px;line-height:1.8}
  .bookish-notebook .nb-head{flex-direction:column;gap:18px}
  .bookish-notebook .nb-head .lead{max-width:none}
  .bookish-notebook .nb-tools{align-self:flex-start}
  .bookish-notebook .backup-actions{left:0;right:auto}
  .bookish-notebook .sync-strip{margin:18px 0 22px}
  .bookish-notebook .sync-strip .save-note{font-size:12px;max-width:calc(100% - 67px)}
  .bookish-notebook .nb-stats>div{padding:16px 10px 14px;gap:8px}
  .bookish-notebook .nb-stats strong{font-size:31px}
  .bookish-notebook .nb-stats span{font-size:11px;letter-spacing:.04em;white-space:nowrap}
  .bookish-notebook .nb-tabs{gap:24px;margin-top:22px}
  .bookish-notebook .nb-tabs button{font-size:14px}
  .bookish-notebook .nb-panel{padding-top:24px}
  .bookish-notebook .practice-banner{flex-direction:column;align-items:stretch;gap:20px;padding-bottom:23px}
  .bookish-notebook .practice-banner h2{font-size:22px}
  .bookish-notebook .practice-actions{flex-direction:row;align-items:center;min-width:0}
  .bookish-notebook .practice-actions .primary{flex:1;max-width:none;min-height:52px;font-size:14px;padding:12px 10px}
  .bookish-notebook .practice-actions button:not(.primary){padding:8px;font-size:12px}
  .bookish-notebook .filter-row{gap:12px}
  .bookish-notebook .word-row{grid-template-columns:minmax(0,1fr) auto;gap:7px 12px;padding:19px 0 15px}
  .bookish-notebook .bookish-word-copy{grid-row:1 / span 2}
  .bookish-notebook .word-title{font-size:24px}
  .bookish-notebook .bookish-short-meaning{font-size:13px;line-height:22px}
  .bookish-notebook .word-reason{font-size:11px;gap:5px;max-width:94px;white-space:normal}
  .bookish-notebook .word-review-meta{display:flex;flex-direction:column;gap:2px;font-size:11px;text-align:right}
  .bookish-notebook .row-actions{gap:4px 10px;flex-wrap:wrap}
  .bookish-notebook .row-actions>a{font-size:12px}
  .bookish-notebook .row-actions button{font-size:12px;padding:8px 10px}
  .bookish-notebook .quiz-controls-wrap{bottom:calc(72px + env(safe-area-inset-bottom));filter:none}
  .bookish-notebook .quiz-session{padding-bottom:285px}
  .bookish-screening #pageShell{padding-top:34px}
  .bookish-screening .hero .session-panel{margin-top:22px}
  .bookish-screening .panel-actions{gap:8px}
  .bookish-screening .panel-actions button{min-height:44px;padding:10px 12px;font-size:13px}
  .bookish-screening .controls{gap:10px 18px;padding:14px 0;margin-top:25px}
  .bookish-screening .controls .search-wrap{min-width:0;gap:10px;font-size:12px}
  .bookish-screening .mode-tabs{gap:22px}
  .bookish-screening #clearMarks{font-size:11px;padding:8px 0}
  .bookish-screening .word-grid{gap:10px;margin-top:24px}
  .bookish-screening .word-btn{min-height:44px;padding:10px 14px}
  .bookish-screening .word-label{font-size:19px}
  .bookish-screening .bookish-screen-legend{gap:12px 18px;font-size:11px}
  .bookish-screening #bookishMarkedCount{flex-basis:100%;margin-left:0;font-size:14px}
  .bookish-video .video-unit-explore-callout{display:block}
  .bookish-video .video-unit-explore-callout>.explore-unit-link{margin-top:16px}
  .bookish-video .explore-card,.bookish-video .explore-card.bookish-featured{grid-template-columns:98px minmax(0,1fr);gap:16px;padding:22px 0}
  .bookish-video .explore-card.bookish-featured{display:block}
  .bookish-video .bookish-featured>.explore-poster{margin-bottom:18px}
  .bookish-video .explore-info h3{font-size:21px;margin-top:7px}
  .bookish-video .bookish-featured .explore-info h3{font-size:25px}
  .bookish-video .explore-meta{gap:5px 10px;font-size:11px}
  .bookish-video .explore-interest{font-size:13px;line-height:1.8}
  .bookish-video .explore-card:not(.bookish-featured) .explore-info{display:contents}
  .bookish-video .explore-card:not(.bookish-featured) .explore-info>:is(.explore-meta,h3){grid-column:2}
  .bookish-video .explore-card:not(.bookish-featured) .explore-info>.explore-meta{grid-row:1;align-self:start}
  .bookish-video .explore-card:not(.bookish-featured) .explore-info>h3{grid-row:1;margin-top:42px;min-height:24px}
  .bookish-video .explore-card:not(.bookish-featured) .explore-info>:not(.explore-meta):not(h3){grid-column:1 / -1}
  .bookish-video .explore-card:not(.bookish-featured) .explore-interest{margin:0}
  .bookish-video .explore-duration{right:4px;bottom:4px;font-size:12px;padding:2px 4px}
  .bookish-video .bookish-featured .explore-duration{right:10px;bottom:10px;font-size:15px}
  .bookish-video .explore-options{display:block}
  .bookish-video .explore-options>details{margin-top:12px}
  .bookish-video .explore-topic-tabs{gap:4px 22px}
  .bookish-video .explore-topic-tabs button{font-size:12px}
  .bookish-video .explore-units{grid-template-columns:repeat(2,minmax(0,1fr))}
  .bookish-video .explore-pick{grid-template-columns:98px minmax(0,1fr);gap:16px}
  .bookish-video .explore-pick h3{font-size:21px}
  .bookish-video .explore-pick .explore-info{display:block}
}
@media(max-width:360px){
  .bookish-subpage :is(.nb-shell,#pageShell,.course-video-main){width:calc(100% - 32px)}
  .bookish-notebook .nb-stats>div{padding-left:8px;padding-right:8px}
  .bookish-notebook .nb-stats strong{font-size:28px}
  .bookish-notebook .nb-tabs{gap:20px}
  .bookish-notebook .practice-actions{align-items:stretch;flex-direction:column}
  .bookish-notebook .practice-actions button:not(.primary){align-self:flex-start;padding-left:0}
  .bookish-screening .controls{gap:8px 14px}
  .bookish-screening .bookish-control-label{font-size:12px}
  .bookish-screening #clearMarks{margin-left:0}
  .bookish-video .explore-toolbar{gap:10px}
}
@media(prefers-reduced-motion:reduce){
  .bookish-subpage,.bookish-subpage *,.bookish-subpage *::before,.bookish-subpage *::after{scroll-behavior:auto!important;animation:none!important;transition:none!important}
}

body.gx{--font-en:BookSerif,Georgia,serif;--font-cn:var(--song)}