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#63458407;margin-bottom:14px}.vocab-card:nth-child(3n+2){background:#fffaf1;border-color:#eeddbb}.vocab-card:nth-child(3n+3){background:#f2fbf7;border-color:#cfe8df}.vocab-card.selected{background:#f1e9ff;border-color:#9868d8;box-shadow:0 0 0 2px #e4d1fa}.card-word{font-size:20px;color:#493069;font-weight:750}.vocab-ipa{font-size:14px;color:#867095}.vocab-meaning{font-size:14px;color:#513e65}.pos-badge{background:#ece2fa;padding:4px 6px;border-radius:5px;font-size:11px;color:#7750a2}.save-word-button{background:#fff0c7;border:1px solid #e9c879;color:#9b6a11;font-size:11px;padding:6px 9px;min-height:31px;border-radius:7px;white-space:nowrap}.word-card-actions{display:flex;gap:6px;margin:14px 0 4px;flex-wrap:wrap}.word-card-actions button{font-size:11px;min-height:33px;padding:7px 9px;border-radius:7px;background:#eee6fc;color:#7850af;border:1px solid #d9c9ef}.word-card-actions button[data-play]{background:#7954bc;color:white;border-color:#7954bc}.word-card-actions 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solid #e3eee8}.reference-tools input{border-color:#b9dccc;background:#f5fcf8;min-height:44px}.reference-tools button{background:#e6f6ef;color:#2d8766;border-color:#bee2d1;min-height:40px}.vocabulary-table th{background:#dff4e9;color:#327c61;font-weight:650;font-size:13px}.vocabulary-table td{font-size:14px;border-color:#e1ede6}.table-word{color:#21846a;font-size:17px}.vocabulary-table .mini-actions button{background:#e6f6ef;color:#287a60;border:1px solid #c4e5d5;min-height:33px}.memory-card{background:#fffaf0;border-color:#ecd7ac;box-shadow:var(--shadow)}.memory-card .vocab-card{background:#fff7e7;border-color:#eedbb4}.memory-content p{color:#8c7245;font-size:14px}.memory-content b{color:#936319}.memory-content label{color:#a17428;font-size:13px;font-weight:650}.memory-content textarea{border-color:#e5c78c;background:white;font-family:inherit;font-size:14px}.memory-content button{background:#dfa13a;border-color:#dfa13a;color:white;min-height:38px}.notebook-tools{padding:20px;background:white;border:1px solid #e6d9ef;border-radius:14px;box-shadow:var(--shadow)}.notebook-tools #book-test{background:#dd8541;border-color:#dd8541}.notebook-tools #book-listen{background:#eaddfb;color:#7750ae;border-color:#d9c3ee}.notebook-tools #book-clear{background:#fff0f4;color:#b0526f;border-color:#f0cad5}.book-card{padding:22px}.book-foot button{background:#eee4fb;color:#75519a;border-color:#d9c7e8}.book-foot a{color:#7255af;font-weight:600}.mistake-meta{background:#fff0e1;border-radius:6px;padding:8px;color:#ae7539}.panel{border-color:#e3d8ee;box-shadow:var(--shadow);border-radius:14px}.panel h3{color:#6c4296}.panel button{background:#efe7fa;color:#7a50a6}.panel button.primary{background:#7e57c8;color:white}.table-wrap table th{color:#71588d;background:#f3edf9}dialog{border-color:#dcccEE;box-shadow:0 24px 80px #47236430;border-radius:18px}dialog::backdrop{background:#38225355}dialog>.close{background:#f2e6fa;color:#8657ae;border-color:#dac4ed;width:38px;height:38px}.word-popover-head{background:#f2e8ff;border-color:#e4d3f7}#word-popover{border:1px solid #dac5ef;border-top:4px solid #9470d4;box-shadow:0 16px 60px #4b287733;border-radius:17px}.close-word{background:#e5d2f6;color:#784ba4;min-height:36px;width:36px;height:36px}#word-popover h2{color:#634087;font-size:31px}.word-primary-meaning{background:#f2e8fc;color:#704f8b}.word-play-controls #pronounce{background:#8057c4;border-color:#8057c4}.word-play-controls #slow{background:#dcf3ed;color:#2a826d;border-color:#bce0d3}.word-play-controls #twice{background:#fff0d0;color:#a77722;border-color:#ecd2a0}.word-play-controls #favorite{background:#ffedbd;color:#996510;border-color:#eac878}.usage-note{color:#847094}.word-audio-status{color:#8c719f}#toast{background:#563774;color:white;font-size:14px;padding:14px 24px;box-shadow:0 8px 28px #46226730}.book-card .text-button{background:#fff0f4;color:#b05370}.mobile-vocabulary{background:#eee0fb;color:#8454ad;border:1px solid #dbc5ef;padding:8px 10px}
@media(min-width:1100px){.study-shell{grid-template-columns:minmax(0,1fr) 390px;gap:26px}.word-list{max-height:calc(100dvh - 225px)}.lesson-tabs{max-width:none}.reading-controls{flex-wrap:wrap}.mode-tabs button{flex:1}.reading-controls .mode-tabs{min-width:370px}}
@media(max-width:1100px){header{padding:14px 24px;height:auto;min-height:78px;flex-wrap:wrap}nav{gap:6px}nav button{font-size:12px;padding:9px 11px}.home-hero{gap:30px;padding:34px}.home-hero h1{font-size:38px}.hero-learning-preview{padding:20px}.preview-story{font-size:19px}.mode-tabs button{padding:9px 12px}.word-card-actions{gap:4px}.word-card-actions button{padding:6px 7px}.learning-main{padding:22px}.lesson-heading h1{font-size:26px}}
@media(max-width:899px){.home-hero{grid-template-columns:1fr .85fr;gap:20px}.hero-learning-preview{transform:none}.home-hero h1{font-size:33px}.hero-metrics{gap:12px}.preview-story{font-size:17px}.preview-path{font-size:9px;gap:3px}.lesson-tabs button{font-size:15px;min-height:74px;gap:9px;padding:12px}.feature-tab-icon{width:35px;height:35px;font-size:21px}.lesson-tabs small{font-size:10px}.reading-controls .mode-tabs{flex:1}.mode-tabs button{font-size:13px}.vocabulary-pane{display:none}}
@media(max-width:650px){header{padding:15px 16px;gap:12px}.brand b{font-size:20px}.brand-mark{width:34px;height:36px}.brand small{display:none}nav{width:100%;gap:6px;border-top:1px solid #eee4f5;padding-top:12px;margin-top:0;justify-content:flex-start}nav button{font-size:11px;min-height:36px;padding:8px 10px}nav #account{background:#eee7fc;border:1px solid #ded0f6}main,.learning-main{padding:20px 14px}.home-hero{grid-template-columns:1fr;padding:28px 24px;gap:28px;margin-bottom:32px;border-radius:19px}.home-hero h1{font-size:37px}.home-hero-copy>p{font-size:13px}.hero-label{font-size:11px}.hero-metrics{gap:16px}.hero-metrics b{font-size:18px}.hero-learning-preview{padding:19px}.preview-story{font-size:19px;margin:18px 0}.preview-path{font-size:10px}.home-section-heading{align-items:flex-start}.home-section-heading h2{font-size:24px}.home-section-heading>span{display:none}.zone-grid{gap:12px}.zone-card{padding:20px 16px;border-top-width:4px}.zone-card-top{font-size:15px}.zone-code{font-size:29px;margin:22px 0 12px}.zone-card p{font-size:12px;min-height:45px}.zone-card-bottom{font-size:11px}.zone-card-top span:last-child{width:25px;height:25px;font-size:17px}.lesson-heading{padding:23px 20px}.lesson-heading h1{font-size:23px}.lesson-heading p{font-size:11px;line-height:1.8}.reader-top{gap:8px}.reader-top #back{padding:9px 11px;font-size:12px}.reader-book-links{gap:6px}.reader-book-links button{font-size:11px;padding:9px 10px}.lesson-tabs{gap:8px;margin-bottom:21px}.lesson-tabs button{flex-direction:column;gap:7px;padding:13px 7px;min-height:100px;font-size:14px}.lesson-tabs button>span:last-child{text-align:center}.feature-tab-icon{width:32px;height:30px;font-size:21px}.lesson-tabs small{font-size:9px;margin-top:6px}.reading-controls{padding:13px;gap:12px}.mode-tabs{width:100%;display:grid;grid-template-columns:repeat(3,1fr);gap:6px;flex-basis:100%}.mode-tabs button{font-size:12px;min-height:59px;padding:9px 5px}.mode-tabs small{font-size:9px}.type-controls{margin-left:auto}.reading-intro{padding:16px 20px 0;font-size:11px}.reading-intro>span{color:#897295}.reading-intro .mobile-vocabulary{padding:7px 8px;font-size:10px;min-height:34px}.story{padding:20px;font-size:calc(var(--size,20px) - 1px)}.story .word{padding:4px 6px}.study-completion #check{font-size:13px}.study-completion #complete,.study-completion #clear{font-size:11px}.reader-bottom button{font-size:12px}.page-count{font-size:10px}.reference-pane{padding:16px}.reference-tools input{width:100%}.reference-tools button{font-size:11px}.memory-grid{gap:14px}.course-banner{padding:25px 22px}.lesson-row h3{font-size:15px}.lesson-row-number{font-size:20px}.lesson-row-status{font-size:9px}.lesson-directory-tools{padding:14px}.lesson-filter-tabs button{font-size:11px}.lesson-directory-actions button{font-size:11px}.directory-head h1{font-size:29px}.directory-stat b{font-size:34px}.word-popover-scroll{padding:18px 20px}#word-popover .word-play-controls button{font-size:12px;padding:9px 11px}.home-section-heading .eyebrow{font-size:10px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}.zone-card:hover{transform:none}}
@media print{.home-hero,.reader-book-links,.feature-tab-icon{display:none!important}body{background:white}.lesson-heading,.vocab-card,.reading-pane,.reference-pane,.memory-card{box-shadow:none;background:white;color:black}.story{background:white}.pos-badge{color:black;background:#eee}}
/* Compact directories, consistent grammar colours and mobile reading. */
.zone-course-grid,.lesson-list{grid-template-columns:1fr!important;gap:12px}.zone-course-grid .directory-card{min-height:0;padding:20px 24px;display:grid;grid-template-columns:1fr auto;align-items:center;gap:6px 20px}.zone-course-grid .directory-card small{grid-column:1;font-size:12px}.zone-course-grid .directory-card h2{font-size:23px;font-weight:600;margin:0}.zone-course-grid .directory-card-foot{grid-column:2;grid-row:1 / 3;border:0;padding:0;margin:0;gap:24px}.directory-head{min-height:0;padding:26px 30px;margin-bottom:20px}.zone-course-intro{margin:20px 0 14px}.lesson-row{min-height:0!important;padding:15px 20px!important}.lesson-row h3{font-size:19px;font-weight:500}.lesson-row-number{width:44px;height:48px;font-size:23px}.lesson-row-kicker{font-size:12px}.course-banner{padding:26px 30px;min-height:0}.course-banner h1{font-size:32px}.lesson-directory{margin-top:24px}.lesson-directory-tools{padding:14px 18px}.lesson-heading{padding:22px 26px}.lesson-heading h1{font-size:29px;font-weight:600}.lesson-tabs{margin:18px 0;gap:10px}.lesson-tabs button{padding:14px 18px;min-height:0}.reading-controls{padding:16px 22px}.reading-intro{padding:12px 22px}.story{padding:20px 26px;line-height:2.1}.story .meaning,.story .exercise-hint{font-family:inherit;font-size:inherit;color:inherit;font-weight:inherit}.reader-bottom{padding:12px 22px}.vocab-card{padding:17px 18px}.vocab-meaning{margin:10px 0}.vocabulary-table td,.vocabulary-table th{padding:12px 15px!important}.vocabulary-table td{height:auto!important}.mini-actions{gap:5px}.mini-actions button{padding:7px 9px;font-size:12px}.memory-content{padding:16px 18px}.sheet-handle{display:none}
[data-pos=noun]{--pos-ink:#275eaa;--pos-bg:#e2edff;--pos-border:#a8c7f0}[data-pos=verb]{--pos-ink:#b94b32;--pos-bg:#ffebe2;--pos-border:#edb09a}[data-pos=adjective]{--pos-ink:#7a47af;--pos-bg:#f0e5fc;--pos-border:#cdb1e6}[data-pos=adverb]{--pos-ink:#15816a;--pos-bg:#def5ed;--pos-border:#99d4c2}[data-pos=pronoun]{--pos-ink:#a86c14;--pos-bg:#fff0cb;--pos-border:#e8c177}[data-pos=preposition]{--pos-ink:#167e99;--pos-bg:#def3fa;--pos-border:#99cdda}[data-pos=phrase]{--pos-ink:#8b596d;--pos-bg:#f7e8ef;--pos-border:#d9b0c3}
.story .word[data-pos],.pos-badge[data-pos]{color:var(--pos-ink)!important;background:var(--pos-bg)!important;border-color:var(--pos-border)!important}.story .word[data-pos]{box-shadow:0 2px 0 var(--pos-border)}.pos-badge{white-space:nowrap;padding:4px 7px;border:1px solid transparent;border-radius:7px;font-size:13px}.vocabulary-table .pos-badge{font-size:12px}
@media(max-width:899px){.study-shell{display:flex;flex-direction:column;gap:16px}.study-shell .vocabulary-pane{display:block!important;width:100%;position:static;max-height:none;padding:18px}.vocabulary-pane .word-list{max-height:none;overflow:visible}.vocabulary-pane .chapter-kicker{display:none}#word-popover{max-height:78dvh!important;border-radius:20px 20px 0 0!important}.sheet-handle{display:block;height:22px;touch-action:none;cursor:grab}.sheet-handle:after{content:'';display:block;width:42px;height:5px;background:#c4b8d8;border-radius:5px;margin:8px auto}.word-popover-head{padding:4px 18px 9px!important}.word-popover-scroll{padding:12px 18px 18px!important}#word-popover h2{font-size:27px!important;margin:0 0 5px!important;overflow-wrap:anywhere}#word-popover .vocab-ipa{font-size:15px}#word-popover .word-primary-meaning{padding:10px 12px;margin:12px 0;font-size:18px}#word-popover .word-play-controls{gap:6px;margin:12px 0}#word-popover .word-play-controls button{font-size:13px;padding:9px 11px;min-height:38px}#word-popover .word-audio-status{margin:5px 0;font-size:12px}#word-popover .usage-note{margin:12px 0;font-size:14px}#word-popover .example-block{padding:12px;margin-top:12px}#word-popover .example-block p{font-size:15px;margin:8px 0}.word-popover-scroll{max-height:calc(78dvh - 72px)!important}.vocabulary-table,.vocabulary-table tbody{display:block;width:100%;min-width:0!important}.vocabulary-table thead{display:none}.vocabulary-table tr{display:grid;grid-template-columns:32px minmax(0,1fr);gap:5px 10px;padding:14px 12px;border-bottom:1px solid #dce8e1}.vocabulary-table td{display:block;border:0!important;padding:0!important;white-space:normal!important;min-width:0;overflow-wrap:anywhere}.vocabulary-table td:first-child{grid-column:1;grid-row:1 / 6;color:#87918a;font-size:12px;padding-top:4px!important}.vocabulary-table td:not(:first-child){grid-column:2}.vocabulary-table td:nth-child(2) button{font-size:18px;padding:0;font-weight:600}.vocabulary-table td:nth-child(3){font-size:13px}.vocabulary-table td:nth-child(5){font-size:15px}.vocabulary-table td:last-child{margin-top:5px}.table-wrap{overflow:visible}.vocabulary-table .mini-actions{flex-wrap:wrap;gap:6px}.vocabulary-table .mini-actions button{padding:7px 9px;min-height:34px}.reference-pane{padding:16px}.reference-tools{gap:10px;padding-bottom:14px}.mode-tabs button{padding:10px 12px;min-height:0}.mode-tabs button small{font-size:11px}.story{padding:16px 18px}.reading-controls{padding:12px 14px}.reading-intro{padding:10px 16px}.reader-bottom{padding:10px 14px}.lesson-heading h1{font-size:24px}.lesson-tabs button{padding:10px}.lesson-tabs button small{font-size:10px}.feature-tab-icon{font-size:21px}.lesson-row h3{font-size:17px}.zone-course-grid .directory-card{padding:16px;gap:8px}.zone-course-grid .directory-card h2{font-size:20px}.zone-course-grid .directory-card-foot{gap:12px;font-size:13px}.directory-head{padding:20px}.course-banner{padding:20px}.memory-content p{margin:10px 0}.word-list .vocab-card{margin-bottom:12px}}
@media(max-width:650px){.zone-course-grid .directory-card-foot{grid-row:auto;grid-column:1 / 3;justify-content:space-between;margin-top:8px}.zone-course-grid .directory-card h2{grid-column:1 / 3}.lesson-row{gap:10px;padding:12px!important}.lesson-row-number{width:34px;height:40px;font-size:19px}.lesson-row-status{font-size:11px;padding:5px 7px}.lesson-row h3{font-size:16px;line-height:1.55}.lesson-heading{padding:16px}.lesson-tabs{gap:6px}.lesson-tabs button{font-size:14px;gap:6px}.lesson-tabs button small{display:none}.reading-intro>span{font-size:12px}.reader-bottom button{padding:8px 10px;font-size:13px}.page-count{font-size:12px}.mode-tabs button{font-size:14px;padding:9px 7px}.type-controls{gap:6px}.type-controls button{padding:7px;min-width:32px}.vocabulary-pane .card-word{font-size:21px}}
/* Space follows content rather than fixed oversized panels. */
header{height:70px;padding:0 28px}main,.learning-main{max-width:1600px;margin:0 auto;padding:22px 28px 32px}.home-hero{padding:30px 34px;min-height:0;margin-bottom:26px}.home-hero h1{font-size:38px}.hero-metrics{margin-top:20px}.home-section-heading{margin:20px 0 16px}.zone-grid{gap:16px}.zone-card{min-height:190px;padding:22px}.zone-code{font-size:32px;margin:16px 0}.zone-card-bottom{margin-top:18px}.directory-crumbs{margin-bottom:16px}.directory-head h1{font-size:32px}.directory-stat b{font-size:38px}.lesson-directory-heading{margin-bottom:16px}.course-progress-card{padding-left:24px}.course-progress-card strong{font-size:38px}.lesson-row-copy{padding:0}.reference-tools{margin-bottom:16px}.memory-grid{gap:16px}.panel{padding:22px}.vocabulary-pane{padding:20px}.vocabulary-heading{margin-bottom:12px}.example-block{padding:12px 14px;margin-top:12px}.example-block p{margin:8px 0}.word-card-actions{gap:6px;margin:12px 0}.word-card-actions button{padding:8px 10px}.reader-bottom{margin:0;min-height:0}.reader-bottom button{min-width:0}.group-bottom{border-top:1px solid #e8dff0;border-bottom:0}.story .meaning{font-size:1em!important;color:inherit!important;font-family:inherit!important}.sheet-handle{user-select:none}
@media(max-width:899px){header{height:auto;min-height:62px;padding:10px 16px}main,.learning-main{padding:16px 16px 24px}.home-hero{padding:24px}.home-hero h1{font-size:32px}.zone-card{padding:18px;min-height:165px}.zone-code{font-size:27px}.vocabulary-pane{padding:16px}.story{line-height:2}.lesson-tabs .feature-tab-icon{width:30px;height:30px}.course-progress-card{padding-left:0}.word-popover-head .close-word{width:32px;height:32px;font-size:23px}}
@media(max-width:650px){main,.learning-main{padding:12px 12px 22px}.home-hero{padding:20px}.home-hero h1{font-size:29px}.hero-metrics{gap:12px}.zone-grid{gap:12px}.zone-card{padding:16px;min-height:150px}.lesson-directory-tools{padding:12px}.lesson-heading h1{line-height:1.5}.story{padding:14px 16px}.reference-pane{padding:12px}.memory-grid{gap:12px}.vocab-card{padding:14px}.reader-bottom button{min-width:0}.word-popover-head{min-height:0}#word-popover .example-zh{font-size:15px!important;color:#4a4055}.type-controls button{min-height:32px}}
/* Comfortable final spacing: remove excess without crowding content. */
main,.learning-main{padding:24px 32px 36px}.lesson-row{padding:18px 22px!important}.zone-course-grid .directory-card{padding:22px 24px}.lesson-tabs button{padding:15px 18px}.story{padding:24px 30px;line-height:2.15}.vocab-card{padding:20px}.word-card-actions button{min-height:40px}.vocabulary-table td,.vocabulary-table th{padding:14px 16px!important}.reader-bottom button{min-height:40px}.memory-content{padding:20px}.sheet-handle{height:24px}
@media(max-width:899px){main,.learning-main{padding:18px 16px 28px}.story{padding:20px 20px;line-height:2.1}.lesson-tabs button{padding:12px}.vocab-card{padding:17px}.vocabulary-table td{padding:0!important}.vocabulary-table tr{padding:16px 14px;gap:7px 10px}.zone-course-grid .directory-card{padding:20px}.memory-content{padding:18px}.word-popover-scroll{padding:16px 20px 20px!important}}
@media(max-width:650px){main,.learning-main{padding:16px 14px 26px}.lesson-row{padding:16px!important}.story{padding:18px;line-height:2.1}.lesson-tabs button{padding:12px 9px}.vocab-card{padding:16px}.reference-pane{padding:16px}.reader-bottom button{min-height:40px}.mode-tabs button{min-height:48px}.memory-content{padding:16px}}
/* Product navigation and readable information density. */
#menu-toggle{display:none}.zone-course-grid{grid-template-columns:repeat(2,minmax(0,1fr))!important;gap:20px}.zone-course-grid .directory-card{display:flex;flex-direction:column;align-items:flex-start;gap:12px;padding:24px;min-height:185px}.zone-course-grid .directory-card small{align-self:flex-start;width:auto}.zone-course-grid .directory-card h2{font-size:24px;font-weight:600;line-height:1.4}.zone-course-grid .directory-card-foot{display:flex;width:100%;margin-top:auto;padding-top:16px;border-top:1px solid #e6dcf0;justify-content:space-between;gap:12px}.zone-course-grid .directory-card-foot>span{font-size:18px;font-weight:600}.zone-card-bottom{margin-top:12px}.zone-card-bottom>span{display:flex;flex-direction:column;gap:7px}.zone-card-bottom b{color:var(--zone,#6540af);font-size:20px}.zone-card-bottom small{font-size:12px;color:#62566e}.zone-card-top>span:last-child{background:white;border-radius:50%;width:32px;height:32px;display:grid;place-items:center}.zone-code{margin:12px 0 8px}.directory-card:hover,.lesson-row:hover{box-shadow:0 5px 18px #63489a14}.home-advantages{margin-top:38px}.home-advantages h2{font-size:25px}.home-advantages>div{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.home-advantages article{background:white;border:1px solid #e5ddee;border-radius:16px;padding:22px}.home-advantages article>span{display:inline-grid;place-items:center;width:38px;height:38px;background:#ece4ff;color:#6d48ba;border-radius:10px;font-size:22px}.home-advantages article:nth-child(2)>span{background:#e1f3ec;color:#1c876c}.home-advantages article:nth-child(3)>span{background:#fff0c8;color:#a26b14}.home-advantages h3{font-size:18px;margin:14px 0 8px}.home-advantages p{font-size:14px;line-height:1.7;margin:0;color:#665c72}.vocabulary-table .mini-actions button[data-play]{background:#ece5ff;color:#6742b4;border-color:#d2bdf1}.vocabulary-table .mini-actions button[data-slow]{background:#e1f4ef;color:#187e6a;border-color:#a6d8ca}.vocabulary-table .mini-actions button[data-twice]{background:#e7efff;color:#3865aa;border-color:#b9cdf0}.vocabulary-table .mini-actions button[data-save-word]{background:#fff0bd;color:#95600b;border-color:#edc567}.directory-stat span{line-height:1.7}.hero-metrics{flex-wrap:wrap}.lesson-row-copy{min-width:0}.lesson-row h3{overflow-wrap:anywhere}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid #9870d5;outline-offset:3px}.vocab-heading{gap:10px}.save-word-button{flex-shrink:0}.card-word{overflow-wrap:anywhere}.word-card-actions{flex-wrap:wrap}.home-hero-copy .hero-label{display:none}.hero-start{min-height:44px}
@media(max-width:899px){header{position:relative;display:flex;flex-wrap:nowrap;justify-content:space-between;gap:12px}.brand{min-width:0}.brand b{font-size:18px}.brand small{display:none}#menu-toggle{display:grid;place-items:center;width:42px;height:42px;padding:0;font-size:24px;background:#eee7fc;color:#6945b7;border:1px solid #d8c9ef;border-radius:10px}header nav{display:none!important;position:absolute;top:calc(100% + 6px);left:14px;right:14px;width:auto;padding:12px;margin:0;background:white;border:1px solid #e0d5ed;border-radius:14px;box-shadow:0 10px 30px #3c245222;z-index:120;gap:8px;grid-template-columns:repeat(2,minmax(0,1fr))}header.menu-open nav{display:grid!important}header nav button{width:100%;min-height:42px;font-size:13px;text-align:left;padding:10px 12px}.home-hero .hero-learning-preview{display:none}.home-hero{display:block}.hero-metrics{gap:12px 18px}.hero-metrics span{font-size:12px}.hero-metrics b{font-size:22px}.home-advantages>div{grid-template-columns:1fr}.home-advantages article{display:grid;grid-template-columns:38px 1fr;gap:5px 14px;padding:18px}.home-advantages article>span{grid-row:1 / 3}.home-advantages h3,.home-advantages p{margin:0}.zone-course-grid{grid-template-columns:repeat(2,minmax(0,1fr))!important;gap:14px}.zone-course-grid .directory-card{padding:18px;min-height:175px}.zone-course-grid .directory-card h2{font-size:20px}.zone-course-grid .directory-card-foot{flex-wrap:wrap;font-size:13px}.zone-course-grid .directory-card-foot>span{font-size:16px}.vocabulary-table tr{grid-template-columns:22px minmax(0,1fr) auto auto;column-gap:8px;row-gap:9px}.vocabulary-table td:first-child{grid-column:1;grid-row:1 / 3}.vocabulary-table td:nth-child(2){grid-column:2;grid-row:1}.vocabulary-table td:nth-child(3){grid-column:2;grid-row:2}.vocabulary-table td:nth-child(4){grid-column:3;grid-row:1;align-self:center}.vocabulary-table td:nth-child(5){grid-column:4;grid-row:1 / 3;align-self:center;max-width:110px}.vocabulary-table td:last-child{grid-column:2 / 5;grid-row:3;margin:0}.vocabulary-table .mini-actions{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:5px}.vocabulary-table .mini-actions button{font-size:11px;white-space:nowrap;padding:7px 4px;min-height:38px}.vocabulary-table td:nth-child(2) button{font-size:17px;text-align:left;overflow-wrap:anywhere}.vocabulary-table .pos-badge{font-size:11px;padding:3px 5px}.vocabulary-table td:nth-child(3){font-size:12px}.vocabulary-table td:nth-child(5){font-size:14px}.home-section-heading h2{font-size:24px}}
@media(max-width:550px){.zone-course-grid{grid-template-columns:1fr!important}.zone-course-grid .directory-card{min-height:155px}.home-hero h1{font-size:30px}.hero-metrics span:last-child{display:none}.zone-card-top>span:first-child{font-size:16px}.zone-card-bottom b{font-size:18px}.home-advantages{margin-top:28px}.zone-code{font-size:25px}.vocabulary-table tr{padding:14px 5px}.vocabulary-table td:nth-child(5){max-width:85px}.vocabulary-table .pos-badge{white-space:normal;line-height:1.5}.vocabulary-table td:nth-child(4){max-width:56px}}

@media(max-width:899px){.home-hero .hero-metrics{margin-top:20px}.vocabulary-table .mini-actions button[data-save-word]{background:#fff0bd!important;color:#95600b!important;border-color:#edc567!important}.vocabulary-table .mini-actions button[data-play]{background:#ece5ff!important;color:#6742b4!important}.vocabulary-table .mini-actions button[data-twice]{background:#e7efff!important;color:#3865aa!important}.zone-card-bottom{justify-content:flex-start}.zone-card-bottom small{line-height:1.6}}
/* Align chapter status and use each area's own colour throughout its card. */
.lesson-row{display:grid!important;grid-template-columns:48px minmax(0,1fr) 82px 24px;align-items:center!important}.lesson-row-status{align-self:center!important;justify-self:center;margin:0!important;min-width:60px;text-align:center}.lesson-row-arrow{align-self:center!important;justify-self:center}.zone-card[data-zone=ielts]{--zone:#6846cc}.zone-card[data-zone=kaoyan]{--zone:#d45d38}.zone-card[data-zone=gre]{--zone:#3f66d1}.zone-card[data-zone=cet4]{--zone:#188775}.zone-card[data-zone=cet6]{--zone:#b77c12}.zone-card[data-zone=tem4]{--zone:#c14976}.zone-card[data-zone=toefl]{--zone:#13849f}.zone-card[data-zone=tem8]{--zone:#8b4ac4}.zone-card .zone-card-bottom{border-top:0!important;padding-top:0!important;margin-top:10px}.zone-card .zone-card-bottom>span{width:100%;padding:10px 12px;background:white;border-radius:10px}.zone-card .zone-card-bottom b{color:var(--zone)!important;font-size:18px}.zone-start-label{font-size:14px;font-weight:600;white-space:nowrap}.zone-title-line{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.zone-title-line>b{font-size:17px;font-weight:600}.zone-title-line>small{font-size:11px;font-weight:400;color:var(--zone);opacity:.9}.zone-card-top .zone-title-line{flex:1}.zone-card-top>span:last-child{flex-shrink:0}.zone-code{margin:16px 0 12px}.group-completion{display:flex;align-items:center;justify-content:center;gap:12px}.group-completion #complete{background:#e1f4e9;color:#1b805e;border:1px solid #a7d7bb;padding:9px 13px}.study-completion{padding:0 24px 16px;min-height:0}.study-completion>div:empty{display:none}.study-completion #save-status{margin-left:auto;font-size:11px}.study-completion:not(:has(#check)){justify-content:center}.study-completion:not(:has(#check)) #save-status{margin:0}.story{font-size:var(--size,20px)!important}
@media(max-width:899px){.zone-title-line>small{font-size:10px}.zone-card .zone-card-bottom b{font-size:16px}.zone-start-label{font-size:12px}.group-completion{gap:7px}.group-completion #complete{font-size:12px;padding:8px 9px}.study-completion{padding:0 16px 12px}}
@media(max-width:650px){.lesson-row{grid-template-columns:34px minmax(0,1fr) 64px 16px;gap:8px}.lesson-row-status{min-width:0;font-size:11px;padding:5px 7px}.group-bottom{display:grid;grid-template-columns:auto 1fr auto;gap:5px}.group-completion{flex-direction:column;gap:4px}.group-completion .page-count{font-size:11px}.zone-title-line{gap:4px}.zone-title-line>b{font-size:15px}.zone-card .zone-card-bottom>span{padding:9px 7px}.zone-card .zone-card-bottom b{font-size:15px}.zone-start-label{font-size:11px}}
/* Mobile toolbars: reserve a full row for the three learning modes. */
@media(max-width:899px){.reading-controls{display:flex;flex-direction:column;align-items:stretch;gap:12px;padding:14px 16px}.reading-controls .mode-tabs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;width:100%;min-width:0}.reading-controls .mode-tabs button{width:100%;min-width:0;min-height:46px;padding:11px 5px;font-size:14px;line-height:1.4;white-space:nowrap;word-break:keep-all;overflow-wrap:normal}.reading-controls .mode-tabs button small{display:none}.reading-controls .type-controls{display:flex;align-items:center;justify-content:flex-end;margin:0;gap:10px;width:100%}.reading-controls .type-controls:before{content:'字号';font-size:13px;color:#71627e;margin-right:auto}.type-controls button{min-width:40px;min-height:38px;padding:8px;font-size:14px}.reading-intro{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:12px 16px}.reading-intro>span{flex:1 1 200px;font-size:13px;line-height:1.6}.reading-intro .mobile-vocabulary{flex:0 0 auto;white-space:nowrap;min-height:38px;padding:8px 10px;font-size:12px}.reference-tools{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.reference-tools input{width:100%;flex:1 1 100%;min-width:0}.reference-tools button{min-height:40px;white-space:nowrap;padding:9px 12px;font-size:13px}.reference-tools #word-count{margin-right:auto;font-size:13px}.lesson-directory-tools{display:flex;flex-wrap:wrap;gap:12px}.lesson-directory-tools input{width:100%;min-width:0;flex:1 1 100%}.lesson-filter-tabs{display:flex;flex-wrap:wrap;gap:6px}.lesson-filter-tabs button{white-space:nowrap;padding:9px 12px;min-height:40px}.notebook-tools{display:flex;flex-wrap:wrap;gap:10px}.notebook-tools input,.notebook-tools select{min-width:0;width:100%;flex:1 1 100%}.notebook-tools button{white-space:nowrap;min-height:40px;padding:9px 12px;font-size:13px}.reader-top{flex-wrap:wrap;row-gap:10px}.reader-book-links{display:flex;flex-wrap:wrap;gap:8px}.reader-book-links button{white-space:nowrap}.lesson-neighbors button{white-space:nowrap}.word-play-controls button,.word-card-actions button{white-space:nowrap}.group-bottom button{white-space:nowrap}}
@media(max-width:380px){.reading-controls{padding:12px}.reading-controls .mode-tabs{gap:6px}.reading-controls .mode-tabs button{font-size:13px}.reader-bottom{padding:10px 12px}.reader-bottom button{font-size:12px;padding:8px}.reader-bottom .page-count{font-size:11px}.lesson-tabs button{font-size:13px}.lesson-tabs .feature-tab-icon{width:24px;height:24px;font-size:17px}.vocabulary-heading{flex-wrap:wrap;gap:10px}}
/* Desktop and mobile learning controls have distinct layouts. */
@media(min-width:900px){.reading-pane>.reading-controls{display:flex;flex-direction:row;align-items:center;justify-content:space-between;gap:16px;padding:16px 22px}.reading-pane>.reading-controls>.mode-tabs{display:flex;flex:0 1 auto;gap:8px;width:auto;max-width:none;min-width:0}.reading-pane>.reading-controls>.mode-tabs button{white-space:nowrap;padding:10px 16px;min-height:44px;font-size:14px}.reading-pane>.reading-controls>.type-controls{display:flex;flex:0 0 auto;width:auto;margin:0 0 0 auto;gap:10px;align-items:center}.reading-pane>.reading-controls>.type-controls:before{content:none}.reading-pane>.reading-controls>#mobile-words{display:none}.reading-pane>.reading-controls>.mode-tabs small{display:none}.reading-controls+.story{padding-top:24px}}
@media(max-width:899px){.reading-pane>.reading-controls{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px 8px;padding:14px 16px;align-items:center}.reading-pane>.reading-controls>.mode-tabs{grid-column:1 / -1;grid-row:1;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;width:100%;max-width:none}.reading-pane>.reading-controls>.mode-tabs button{white-space:nowrap;font-size:14px;padding:10px 5px;min-height:44px}.reading-pane>.reading-controls>.mode-tabs small{display:none}.reading-pane>.reading-controls>#mobile-words{display:block;grid-column:1;grid-row:2;justify-self:start;padding:8px 10px;min-height:38px;font-size:12px;white-space:nowrap}.reading-pane>.reading-controls>.type-controls{grid-column:2;grid-row:2;display:flex;align-items:center;justify-content:flex-end;gap:8px;width:auto;margin:0;padding:0;border:0}.reading-pane>.reading-controls>.type-controls:before{content:none}.reading-pane>.reading-controls>.type-controls button{min-width:36px;min-height:38px;padding:7px;font-size:14px}.reading-pane>.reading-controls>.type-controls>span{font-size:13px}}
@media(max-width:380px){.reading-pane>.reading-controls{padding:12px;gap:10px 6px}.reading-pane>.reading-controls>.mode-tabs{gap:6px}.reading-pane>.reading-controls>.mode-tabs button{font-size:13px}.reading-pane>.reading-controls>.type-controls{gap:5px}}
/* Mobile vocabulary: paired word/meaning and IPA/grammar, no narrow side columns. */
@media(max-width:899px){.vocabulary-table tr{grid-template-columns:22px minmax(0,1fr) auto;gap:10px 12px;align-items:center;padding:16px 10px}.vocabulary-table td:first-child{grid-column:1;grid-row:1 / 3;align-self:start;padding-top:4px!important}.vocabulary-table td:nth-child(2){grid-column:2;grid-row:1;align-self:center}.vocabulary-table td:nth-child(5){grid-column:3;grid-row:1;align-self:center;justify-self:end;max-width:145px;font-size:15px;line-height:1.6}.vocabulary-table td:nth-child(3){grid-column:2;grid-row:2;align-self:center;font-size:13px;line-height:1.6}.vocabulary-table td:nth-child(4){grid-column:3;grid-row:2;align-self:center;justify-self:end;max-width:none}.vocabulary-table td:nth-child(4) .pos-badge{display:inline-block;white-space:nowrap!important;word-break:keep-all;overflow-wrap:normal;font-size:12px;line-height:1.4;padding:4px 7px}.vocabulary-table td:last-child{grid-column:2 / 4;grid-row:3;margin-top:2px}.vocabulary-table .mini-actions{grid-template-columns:repeat(4,minmax(0,1fr));gap:6px}.vocabulary-table td:nth-child(2) button{line-height:1.5;font-size:18px}.vocabulary-table td:nth-child(5){overflow-wrap:anywhere}}
@media(max-width:380px){.vocabulary-table tr{grid-template-columns:18px minmax(0,1fr) auto;column-gap:8px;padding:14px 4px}.vocabulary-table td:nth-child(5){max-width:100px;font-size:14px}.vocabulary-table td:nth-child(2) button{font-size:16px}.vocabulary-table td:nth-child(4) .pos-badge{font-size:11px;padding:4px 5px}.vocabulary-table .mini-actions{gap:4px}}
/* Home area cards: desktop inline metadata, mobile two-line metadata. */
.zone-card{display:flex;flex-direction:column;justify-content:flex-start;min-height:0!important}.zone-card .zone-card-top{align-items:center;min-height:38px}.zone-card .zone-title-line{display:flex;flex-direction:row;align-items:center;gap:8px;flex-wrap:wrap;min-width:0}.zone-card .zone-title-line>b{line-height:1.4}.zone-card .zone-title-line>small{display:inline;white-space:nowrap;line-height:1.5}.zone-card .zone-code{font-size:30px;line-height:1.2;margin:14px 0 12px}.zone-card .zone-card-bottom{margin-top:0!important;padding-top:0!important}.zone-card .zone-card-bottom>span{padding:11px 12px}.zone-card .zone-card-bottom b{display:block;font-size:17px;line-height:1.5;white-space:nowrap}.zone-card .zone-start-label{display:inline;font-size:inherit;font-weight:inherit;line-height:inherit;margin:0}
@media(max-width:899px){.zone-card{padding:18px}.zone-card .zone-title-line{flex-direction:column;align-items:flex-start;gap:5px;flex-wrap:nowrap}.zone-card .zone-title-line>b{font-size:16px}.zone-card .zone-title-line>small{display:block;font-size:11px}.zone-card .zone-card-top{min-height:47px}.zone-card .zone-code{font-size:26px;margin:12px 0 10px}.zone-card .zone-card-bottom>span{padding:10px 8px}.zone-card .zone-card-bottom b{font-size:16px}.zone-card .zone-start-label{display:block;font-size:12px;margin-top:3px}}
@media(max-width:380px){.zone-card{padding:14px}.zone-card .zone-title-line>small{font-size:10px}.zone-card .zone-code{font-size:24px}}

@media(max-width:899px){.zone-card .zone-card-bottom .zone-start-label{display:none}}
/* Area identity follows the learner from the home card into the course and chapter. */
body[data-zone]:not([data-zone=""]){--accent:var(--zone);background:linear-gradient(180deg,var(--zone-light) 0, #fafbfd 700px)}
body[data-zone]:not([data-zone=""]) .course-banner,body[data-zone]:not([data-zone=""]) .lesson-heading,body[data-zone]:not([data-zone=""]) .directory-head{background:linear-gradient(120deg,var(--zone-light),#fff);border-color:color-mix(in srgb,var(--zone) 25%,white)}
body[data-zone]:not([data-zone=""]) .course-banner h1,body[data-zone]:not([data-zone=""]) .lesson-heading h1,body[data-zone]:not([data-zone=""]) .directory-head h1,body[data-zone]:not([data-zone=""]) .lesson-directory-heading h2,body[data-zone]:not([data-zone=""]) .zone-course-intro h2{color:var(--zone)}
body[data-zone]:not([data-zone=""]) .directory-crumbs a,body[data-zone]:not([data-zone=""]) .directory-crumbs b,body[data-zone]:not([data-zone=""]) .course-banner .eyebrow,body[data-zone]:not([data-zone=""]) .reader-top>span,body[data-zone]:not([data-zone=""]) .chapter-kicker,body[data-zone]:not([data-zone=""]) .page-count{color:var(--zone)}
body[data-zone]:not([data-zone=""]) nav #library,body[data-zone]:not([data-zone=""]) #menu-toggle{color:var(--zone);background:var(--zone-light);border-color:color-mix(in srgb,var(--zone) 25%,white)}
body[data-zone]:not([data-zone=""]) nav #library[aria-current=page]{box-shadow:0 3px 0 var(--zone)}
body[data-zone]:not([data-zone=""]) .lesson-filter-tabs button{color:var(--zone)}
body[data-zone]:not([data-zone=""]) .lesson-filter-tabs button.active{background:var(--zone);color:white;border-color:var(--zone);box-shadow:0 2px 0 color-mix(in srgb,var(--zone) 80%,black)}
body[data-zone]:not([data-zone=""]) .lesson-row{border-color:color-mix(in srgb,var(--zone) 20%,white);border-left-color:var(--zone)}
body[data-zone]:not([data-zone=""]) .lesson-row-number,body[data-zone]:not([data-zone=""]) .lesson-row-status:not(.done){color:var(--zone);background:var(--zone-light)}
body[data-zone]:not([data-zone=""]) .lesson-row-arrow,body[data-zone]:not([data-zone=""]) .lesson-row-kicker{color:var(--zone)}
body[data-zone]:not([data-zone=""]) .lesson-neighbors button,body[data-zone]:not([data-zone=""]) #back{color:var(--zone);border-color:color-mix(in srgb,var(--zone) 25%,white)}
body[data-zone]:not([data-zone=""]) .reading-controls,body[data-zone]:not([data-zone=""]) .vocabulary-pane{background:var(--zone-light);border-color:color-mix(in srgb,var(--zone) 25%,white)}
body[data-zone]:not([data-zone=""]) .vocabulary-heading h2,body[data-zone]:not([data-zone=""]) .audio-status,body[data-zone]:not([data-zone=""]) .source-link{color:var(--zone)}
body[data-zone]:not([data-zone=""]) #unlocked-count{color:var(--zone);background:white}
body[data-zone]:not([data-zone=""]) .audio-dot{background:var(--zone)}
body[data-zone]:not([data-zone=""]) .reader-bottom button,body[data-zone]:not([data-zone=""]) #mobile-words{color:var(--zone);background:var(--zone-light);border-color:color-mix(in srgb,var(--zone) 25%,white)}
body[data-zone]:not([data-zone=""]) #next,body[data-zone]:not([data-zone=""]) #next-bottom,body[data-zone]:not([data-zone=""]) #listen,body[data-zone]:not([data-zone=""]) .mode-tabs [data-mode=original].active{background:var(--zone);color:white;border-color:var(--zone);box-shadow:0 3px 0 color-mix(in srgb,var(--zone) 80%,black)}
body[data-zone]:not([data-zone=""]) .mode-tabs [data-mode=original]:not(.active){color:var(--zone);background:white;border-color:color-mix(in srgb,var(--zone) 35%,white)}
body[data-zone]:not([data-zone=""]) .directory-card,body[data-zone]:not([data-zone=""]) .directory-card:nth-child(n){border-top-color:var(--zone);background:linear-gradient(140deg,var(--zone-light),white)}
body[data-zone]:not([data-zone=""]) .directory-card h2,body[data-zone]:not([data-zone=""]) .directory-card-foot>span{color:var(--zone)}
body[data-zone]:not([data-zone=""]) .directory-card-foot b,body[data-zone]:not([data-zone=""]) .directory-card small{color:var(--zone);background:var(--zone-light)}
body[data-zone]:not([data-zone=""]) #word-popover{border-color:color-mix(in srgb,var(--zone) 35%,white)}
body[data-zone]:not([data-zone=""]) .word-popover-head{background:var(--zone-light);border-color:color-mix(in srgb,var(--zone) 25%,white)}
body[data-zone]:not([data-zone=""]) .word-popover-head .close-word{color:var(--zone);background:white}
/* Course lobby: restrained area identity, distinct editorial course covers. */
.zone-lobby{padding-bottom:24px}.zone-lobby-hero{display:flex;align-items:center;justify-content:space-between;gap:26px;padding:30px 32px;border:1px solid #e4e5ed;border-radius:20px;background:#fff;box-shadow:0 6px 24px #24364b05;position:relative;overflow:hidden}.zone-lobby-hero:before{content:'';position:absolute;left:0;top:24px;bottom:24px;width:5px;background:var(--zone);border-radius:0 4px 4px 0}.zone-lobby-heading{display:flex;align-items:center;gap:20px}.zone-emblem{display:grid;place-items:center;min-width:82px;height:82px;padding:12px;border-radius:18px;background:var(--zone-light);color:var(--zone);font-size:18px;font-weight:750;letter-spacing:.5px}.zone-lobby-kicker{font-size:12px;letter-spacing:2px;color:#89909f}.zone-lobby h1{font-size:34px;color:#252b40;margin:6px 0 0;line-height:1.3;font-weight:650}.zone-lobby-stats{display:flex;align-items:center;gap:32px}.zone-lobby-stats>div{display:flex;flex-direction:column;gap:6px}.zone-lobby-stats strong{font-size:34px;line-height:1.2;letter-spacing:-1px;color:var(--zone)}.zone-lobby-stats b{font-size:23px;color:#3c4356;line-height:1.2}.zone-lobby-stats span{font-size:12px;color:#7d8393}.zone-lobby-toolbar{display:flex;justify-content:space-between;align-items:center;gap:16px;margin:28px 0 18px}.zone-lobby-toolbar h2{display:flex;align-items:center;gap:10px;font-size:23px;color:#30364a;margin:0;font-weight:650}.zone-lobby-toolbar h2>span{font-size:12px;font-weight:500;padding:4px 9px;border-radius:20px;background:#eceef4;color:#717788}.zone-lobby-tools{display:flex;gap:10px}.zone-lobby-tools button{display:flex;align-items:center;gap:8px;padding:10px 15px;border-radius:11px;min-height:42px;font-size:13px;box-shadow:none}.zone-lobby-tools button span{font-size:20px;line-height:1}.zone-lobby-tools #zone-wordbook{background:#fff7e3;border-color:#f1ddb0;color:#946819}.zone-lobby-tools #zone-wrongbook{background:#fff0f3;border-color:#efced6;color:#ad516b}.zone-course-deck{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.zone-course-tile{display:grid;grid-template-columns:155px minmax(0,1fr);border:1px solid #e0e4eb;border-radius:18px;background:white;overflow:hidden;text-decoration:none;color:inherit;transition:transform .16s,box-shadow .16s,border-color .16s}.zone-course-tile:hover{transform:translateY(-3px);border-color:#bdc6d5;box-shadow:0 10px 25px #24364b10}.course-cover{position:relative;min-height:200px;padding:20px;background:#ebe7f5;color:#6a5a94;display:flex;flex-direction:column;justify-content:space-between;overflow:hidden}.tile-1 .course-cover{background:#e3f0ee;color:#3c7b72}.tile-2 .course-cover{background:#e6edf8;color:#4a6a9e}.tile-3 .course-cover{background:#faeddf;color:#a17346}.course-cover:after{content:'';position:absolute;width:150px;height:150px;border:1px solid currentColor;border-radius:50%;right:-65px;bottom:-55px;opacity:.15;box-shadow:0 0 0 18px #ffffff20,0 0 0 36px #ffffff20}.course-cover-label{font-size:11px;letter-spacing:1px;opacity:.8}.course-cover-symbol{font-size:50px;font-weight:600;line-height:1;z-index:1}.course-cover-number{font-size:13px;opacity:.7}.course-tile-content{padding:24px;display:flex;flex-direction:column;min-width:0}.course-tile-meta{display:flex;justify-content:space-between;gap:10px;color:#87909d;font-size:12px}.course-tile-meta>span:first-child{color:#42765c;background:#edf6ef;padding:3px 7px;border-radius:5px}.course-tile-content h3{font-size:23px;font-weight:600;line-height:1.5;color:#30364a;margin:16px 0 22px;overflow-wrap:anywhere}.course-tile-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto}.course-tile-foot strong{font-size:26px;letter-spacing:-.5px;color:#30394c}.course-tile-foot>div>span{font-size:12px;color:#858d9b}.course-tile-cta{display:flex;align-items:center;gap:12px;font-size:12px;color:var(--zone);white-space:nowrap}.course-tile-cta b{width:30px;height:30px;display:grid;place-items:center;background:var(--zone-light);border-radius:50%;font-size:18px}.course-tile-progress{display:flex;align-items:center;gap:10px;margin-top:16px;font-size:11px;color:#818999}.course-tile-progress progress{flex:1;min-width:0;height:4px;accent-color:var(--zone)}
@media(max-width:1100px){.zone-course-tile{grid-template-columns:115px minmax(0,1fr)}.course-cover{padding:16px}.course-tile-content{padding:20px}.course-tile-content h3{font-size:20px}.course-tile-foot{flex-wrap:wrap}}
@media(max-width:650px){.zone-lobby-hero{padding:22px;flex-direction:column;align-items:stretch;gap:22px}.zone-lobby-heading{gap:14px}.zone-emblem{height:58px;min-width:62px;font-size:14px;border-radius:13px}.zone-lobby h1{font-size:27px}.zone-lobby-stats{gap:24px;justify-content:space-between}.zone-lobby-stats strong{font-size:28px}.zone-lobby-stats b{font-size:21px}.zone-lobby-stats span{font-size:11px}.zone-lobby-toolbar{flex-direction:column;align-items:stretch;margin:24px 0 14px;gap:14px}.zone-lobby-toolbar h2{font-size:21px}.zone-lobby-tools{display:grid;grid-template-columns:1fr 1fr;gap:10px}.zone-lobby-tools button{justify-content:center;padding:10px;font-size:13px}.zone-course-deck{grid-template-columns:1fr;gap:16px}.zone-course-tile{grid-template-columns:94px minmax(0,1fr)}.course-cover{padding:14px;min-height:180px}.course-cover-symbol{font-size:38px}.course-cover-label{font-size:10px}.course-tile-content{padding:18px}.course-tile-content h3{font-size:19px;margin:12px 0 18px}.course-tile-foot strong{font-size:23px}.course-tile-cta{gap:8px}}
/* Second course-lobby design: cover-first courses with a restrained masthead. */
.zone-lobby-hero{border:0;border-radius:0;background:transparent;box-shadow:none;padding:14px 0 28px;border-bottom:1px solid #dedfe7;overflow:visible}.zone-lobby-hero:before{display:none}.zone-lobby-heading{gap:18px}.zone-emblem{background:var(--zone);color:white;border-radius:16px;min-width:72px;height:72px;font-size:16px;box-shadow:0 5px 16px color-mix(in srgb,var(--zone) 15%,transparent)}.zone-lobby h1{font-size:38px;font-weight:650;letter-spacing:-1px}.zone-lobby-kicker{color:#7b8190;letter-spacing:1px}.zone-lobby-stats{gap:26px;padding:15px 22px;background:#ffffffc9;border:1px solid #e7e7ee;border-radius:14px}.zone-lobby-stats strong{font-size:28px}.zone-lobby-stats b{font-size:23px}.zone-lobby-toolbar{margin:28px 0 20px}.zone-lobby-toolbar h2{font-size:22px}.zone-course-deck{gap:24px}.zone-course-tile{display:flex;flex-direction:column;border-radius:20px;border:1px solid #e0e2e8;box-shadow:0 3px 12px #27334804}.course-cover{min-height:155px;padding:24px 28px;display:grid;grid-template-columns:1fr auto;grid-template-rows:auto 1fr;gap:20px;color:#5d527a;background:linear-gradient(120deg,#e7e1f1,#f4f0f9)}.tile-1 .course-cover{background:linear-gradient(120deg,#dcebe5,#edf5f1);color:#427b69}.tile-2 .course-cover{background:linear-gradient(120deg,#dfe7f7,#edf2fb);color:#456da0}.tile-3 .course-cover{background:linear-gradient(120deg,#f2e3d2,#faf3e8);color:#a27840}.course-cover-label{grid-column:1;grid-row:1;font-size:12px;letter-spacing:2px}.course-cover-symbol{grid-column:1;grid-row:2;font-size:45px;align-self:end}.course-cover-number{grid-column:2;grid-row:1 / 3;font-size:76px;letter-spacing:-5px;line-height:1;align-self:center;opacity:.2;font-weight:700}.course-cover:after{width:240px;height:240px;right:-110px;bottom:-180px;box-shadow:0 0 0 28px #ffffff30,0 0 0 56px #ffffff20}.course-tile-content{padding:24px 28px 28px}.course-tile-meta{align-items:center;font-size:12px}.course-tile-meta>span:first-child{padding:3px 0;background:none;color:#56866b}.course-tile-content h3{font-size:25px;margin:12px 0 28px;line-height:1.4;font-weight:600;letter-spacing:-.3px}.course-tile-foot{padding-top:0;flex-wrap:nowrap}.course-tile-foot strong{font-size:28px;font-weight:650}.course-tile-cta{background:var(--zone);color:white;padding:11px 15px;border-radius:10px;gap:16px;font-size:13px;font-weight:600}.course-tile-cta b{background:transparent;color:white;width:auto;height:auto}.zone-lobby-tools button{background:white!important;box-shadow:none;border-color:#e1e3e9!important;color:#535d70!important;padding:10px 14px}.zone-lobby-tools #zone-wordbook span{color:#b68723;background:#fff1ce;width:28px;height:28px;display:grid;place-items:center;border-radius:8px}.zone-lobby-tools #zone-wrongbook span{color:#b35b74;background:#fbe8ef;width:28px;height:28px;display:grid;place-items:center;border-radius:8px}.zone-lobby-tools button:hover{border-color:#b7bdca!important;background:#fff!important}.zone-course-tile:hover{transform:translateY(-3px);box-shadow:0 10px 24px #25334812}
@media(max-width:899px){.zone-lobby h1{font-size:32px}.zone-lobby-stats{gap:18px;padding:14px 16px}.course-cover{padding:22px;min-height:140px}.course-tile-content{padding:22px}.course-tile-content h3{font-size:22px}.course-tile-cta{padding:10px 12px}.course-tile-foot strong{font-size:25px}}
@media(max-width:650px){.zone-lobby-hero{padding:10px 0 22px;gap:20px}.zone-lobby h1{font-size:30px}.zone-emblem{height:60px;min-width:60px;border-radius:14px;font-size:13px}.zone-lobby-stats{padding:16px 18px;gap:20px;justify-content:space-between;width:100%}.zone-lobby-stats strong{font-size:27px}.zone-lobby-stats b{font-size:22px}.zone-lobby-toolbar{margin:24px 0 16px;gap:14px}.zone-course-deck{gap:20px}.course-cover{min-height:122px;padding:20px 22px;gap:12px}.course-cover-symbol{font-size:35px}.course-cover-number{font-size:64px}.course-tile-content{padding:20px 22px 22px}.course-tile-content h3{font-size:22px;margin:12px 0 22px}.course-tile-foot strong{font-size:25px}.course-tile-cta{font-size:12px;padding:10px 12px;gap:12px}.zone-lobby-tools button{justify-content:flex-start;padding:9px 12px;font-size:12px}}
/* Lobby content: word counts on covers and a single title/action row. */
.zone-lobby-heading{flex:0 0 auto}.zone-lobby-stats{width:min(55%,600px);justify-content:space-between;padding:20px 28px;gap:32px}.zone-lobby-stats>div{min-width:65px}.course-cover-symbol{font-size:39px;letter-spacing:-1px;white-space:nowrap}.course-cover-symbol small{font-size:17px;font-weight:500;letter-spacing:0}.course-title-row{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-top:16px}.course-title-row h3{margin:0;flex:1;min-width:0;font-size:23px;line-height:1.5}.course-title-row .course-tile-cta{flex:0 0 auto}.course-tile-content{padding:22px 28px 26px}
@media(max-width:899px){.zone-lobby-stats{width:52%;padding:18px 20px;gap:20px}.course-title-row{gap:12px}.course-title-row h3{font-size:20px}.course-cover-symbol{font-size:34px}.course-cover-symbol small{font-size:16px}.course-tile-content{padding:20px 22px 24px}}
@media(max-width:650px){.zone-lobby-stats{width:100%;padding:18px 22px;gap:22px}.zone-lobby-heading{width:100%}.course-title-row{gap:12px;margin-top:14px;align-items:center}.course-title-row h3{font-size:18px;line-height:1.6}.course-title-row .course-tile-cta{font-size:11px;padding:9px 10px;gap:8px}.course-cover-symbol{font-size:32px}.course-cover-symbol small{font-size:15px}.course-tile-content{padding:18px 20px 22px}}
/* Moderate statistics width, numbers and units stay together. */
.zone-lobby-stats{width:auto;max-width:100%;padding:16px 22px;gap:18px;justify-content:flex-start;flex-wrap:nowrap}.zone-lobby-stats>div{display:flex;flex-direction:row;align-items:baseline;gap:6px;min-width:0;white-space:nowrap}.zone-lobby-stats>div+div:before{content:'·';color:#a1a7b3;margin-right:8px}.zone-lobby-stats strong,.zone-lobby-stats b{font-size:23px;line-height:1.4;letter-spacing:0}.zone-lobby-stats span{font-size:13px;line-height:1.4}
@media(max-width:899px){.zone-lobby-stats{width:auto;padding:14px 18px;gap:12px}.zone-lobby-stats strong,.zone-lobby-stats b{font-size:20px}.zone-lobby-stats span{font-size:12px}}
@media(max-width:650px){.zone-lobby-stats{width:auto;align-self:flex-start;max-width:100%;padding:12px 14px;gap:10px}.zone-lobby-stats>div{gap:4px}.zone-lobby-stats>div+div:before{margin-right:3px}.zone-lobby-stats strong,.zone-lobby-stats b{font-size:18px}.zone-lobby-stats span{font-size:11px}}
@media(max-width:380px){.zone-lobby-stats{gap:7px;padding:12px}.zone-lobby-stats strong,.zone-lobby-stats b{font-size:16px}}
/* Course covers: align the word count and a small index, remove decorative arcs. */
.course-cover:after{display:none;content:none}.course-cover{min-height:130px;grid-template-columns:minmax(0,1fr) auto;grid-template-rows:auto auto;gap:16px 20px;padding:22px 28px;align-content:center}.course-cover-label{grid-column:1 / -1;grid-row:1}.course-cover-symbol{grid-column:1;grid-row:2;align-self:center;font-size:36px;line-height:1.2}.course-cover-number{grid-column:2;grid-row:2;align-self:center;justify-self:end;font-size:22px;font-weight:600;letter-spacing:0;line-height:1.2;opacity:.55}.course-cover-symbol small{font-size:16px}
@media(max-width:899px){.course-cover{min-height:120px;padding:20px 22px;gap:14px}.course-cover-symbol{font-size:32px}.course-cover-number{font-size:20px}}
@media(max-width:650px){.course-cover{min-height:110px;padding:18px 22px;gap:12px}.course-cover-symbol{font-size:30px}.course-cover-symbol small{font-size:14px}.course-cover-number{font-size:18px}}
/* Cover indices balance the word-count type without changing the layout. */
.course-cover-number{font-size:42px;font-weight:650;opacity:.65;letter-spacing:-1px}
@media(max-width:899px){.course-cover-number{font-size:38px}}
@media(max-width:650px){.course-cover-number{font-size:36px}}
/* Large, quiet cover indices; visual scaling preserves the existing row height. */
.course-cover-number{font-size:42px;font-weight:700;line-height:1.2;letter-spacing:-2px;opacity:.23;transform:scale(1.65);transform-origin:right center;font-variant-numeric:tabular-nums;pointer-events:none}
@media(max-width:899px){.course-cover-number{font-size:38px;transform:scale(1.65)}}
@media(max-width:650px){.course-cover-number{font-size:36px;transform:scale(1.55)}}
/* Chapter directory: course masthead and a continuous, lighter chapter list. */
.course-directory-hero{display:grid;grid-template-columns:minmax(0,1fr) 260px;align-items:center;gap:40px;padding:16px 0 28px;border-bottom:1px solid #dddfe7}.course-directory-label{display:inline-block;font-size:12px;color:var(--zone);font-weight:600;padding:5px 10px;background:var(--zone-light);border-radius:6px}.course-directory-title h1{font-size:34px;line-height:1.4;font-weight:650;letter-spacing:-.6px;color:#30364a;margin:12px 0 16px}.course-directory-summary{display:flex;align-items:center;gap:20px;color:#7a8292;font-size:13px}.course-directory-summary strong{font-size:22px;font-weight:650;color:#363f52;margin-right:3px}.course-directory-summary .course-access{font-size:11px;color:#547b66;padding:4px 8px;background:#edf5ef;border-radius:5px}.course-directory-progress{padding:18px 20px;border:1px solid #e3e5eb;border-radius:14px;background:#ffffffdd}.course-progress-label{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:12px;color:#7e8797}.course-progress-label b{color:#3e4657;font-size:15px;font-weight:600}.course-progress-label small{font-size:12px;color:#8a93a0;font-weight:400}.course-directory-progress progress{display:block;width:100%;height:5px;margin:12px 0 16px;accent-color:var(--zone)}.course-directory-progress .continue-lesson{display:flex;align-items:center;justify-content:space-between;background:var(--zone);color:white;border-radius:9px;text-decoration:none;min-height:40px;padding:10px 13px;font-size:13px;font-weight:600;box-shadow:none}.course-directory-page .lesson-directory{margin-top:26px}.course-directory-page .lesson-directory-heading{margin:0 0 16px;align-items:center}.course-directory-page .lesson-directory-heading h2{color:#353c4e!important;font-size:22px;font-weight:650;margin:0}.course-directory-page .lesson-directory-actions{gap:10px}.course-directory-page .lesson-directory-actions button{min-height:40px;border-radius:10px;box-shadow:none;font-size:12px;padding:9px 13px}.course-directory-page #directory-wordbook{background:#fff8e7;color:#956c1d;border-color:#ebddb9}.course-directory-page #directory-wrongbook{background:#fff0f4;color:#a85a70;border-color:#edcfd8}.course-directory-page .lesson-directory-tools{padding:14px 16px;border:1px solid #e4e6ec;box-shadow:none;border-radius:12px;margin-bottom:16px;gap:14px;background:#fff}.course-directory-page #lesson-search{min-height:40px;padding:9px 12px;border-radius:8px;width:330px;background:#f9fafc;border-color:#e3e5eb;font-size:13px}.course-directory-page .lesson-filter-tabs button{padding:9px 12px;min-height:38px;font-size:12px;border-radius:8px;box-shadow:none}.course-directory-page #lesson-result-count{font-size:12px;color:#8c94a1}.course-directory-page .lesson-list{display:flex;flex-direction:column;gap:0;background:white;border:1px solid #e3e6eb;border-radius:14px;overflow:hidden}.course-directory-page .lesson-row{border:0!important;border-bottom:1px solid #eceef2!important;border-radius:0;padding:12px 18px!important;min-height:70px!important;grid-template-columns:38px minmax(0,1fr) 78px 22px;gap:16px;box-shadow:none;background:white;transition:background .15s;transform:none}.course-directory-page .lesson-row:last-child{border-bottom:0!important}.course-directory-page .lesson-row:hover{background:color-mix(in srgb,var(--zone-light) 35%,white);box-shadow:none;transform:none}.course-directory-page .lesson-row-number{width:34px;height:36px;border-radius:8px;font-size:17px;font-weight:600;background:var(--zone-light);color:var(--zone)}.course-directory-page .lesson-row-kicker{color:#8a92a0!important;font-size:11px;letter-spacing:0;line-height:1.4}.course-directory-page .lesson-row h3{font-size:16px;font-weight:500;line-height:1.55;color:#323b4d;margin:4px 0 0}.course-directory-page .lesson-row-status{font-size:11px;padding:4px 8px;border-radius:6px;min-width:0;background:#f1f3f7!important;color:#87909e!important}.course-directory-page .lesson-row-status.ongoing{color:var(--zone)!important;background:var(--zone-light)!important}.course-directory-page .lesson-row-status.done{color:#368064!important;background:#e8f4ed!important}.course-directory-page .lesson-row-arrow{font-size:18px;color:var(--zone)}
@media(max-width:899px){.course-directory-hero{grid-template-columns:minmax(0,1fr) 220px;gap:24px}.course-directory-title h1{font-size:28px}.course-directory-summary{gap:14px}.course-directory-page #lesson-search{width:100%}}
@media(max-width:650px){.course-directory-hero{grid-template-columns:1fr;gap:20px;padding:10px 0 22px}.course-directory-title h1{font-size:27px;margin:10px 0 14px}.course-directory-summary{font-size:12px;gap:16px;flex-wrap:wrap}.course-directory-summary strong{font-size:21px}.course-directory-progress{display:grid;grid-template-columns:minmax(0,1fr) auto;grid-template-rows:auto auto;gap:8px 18px;padding:14px 16px}.course-progress-label{grid-column:1;grid-row:1}.course-directory-progress progress{grid-column:1;grid-row:2;margin:0;align-self:center}.course-directory-progress .continue-lesson{grid-column:2;grid-row:1 / 3;gap:14px;min-height:40px}.course-directory-page .lesson-directory{margin-top:22px}.course-directory-page .lesson-directory-heading{flex-wrap:wrap;gap:12px}.course-directory-page .lesson-directory-heading h2{font-size:20px}.course-directory-page .lesson-directory-actions{gap:7px}.course-directory-page .lesson-directory-actions button{font-size:11px;padding:8px 10px;min-height:38px}.course-directory-page .lesson-directory-tools{padding:12px;gap:10px}.course-directory-page .lesson-filter-tabs{gap:4px}.course-directory-page .lesson-filter-tabs button{padding:8px 10px}.course-directory-page .lesson-row{grid-template-columns:30px minmax(0,1fr) 60px 14px;gap:9px;padding:12px!important;min-height:70px!important}.course-directory-page .lesson-row-number{width:28px;height:32px;font-size:15px;border-radius:6px}.course-directory-page .lesson-row h3{font-size:15px;line-height:1.6}.course-directory-page .lesson-row-status{font-size:10px;padding:4px 6px}.course-directory-page .lesson-row-kicker{font-size:10px}}
/* Personal notebooks match the approved chapter directory. */
.notebook-page{--book-accent:#a67c20;--book-tint:#fff5db}.notebook-review{--book-accent:#ac5872;--book-tint:#fcecf1}.notebook-masthead{display:flex;align-items:center;justify-content:space-between;padding:16px 0 26px;border-bottom:1px solid #dddfe7;gap:24px}.notebook-label{font-size:12px;font-weight:600;color:var(--book-accent);display:inline-block;background:var(--book-tint);padding:5px 10px;border-radius:6px}.notebook-masthead h1{font-size:34px;font-weight:650;color:#30364a;line-height:1.4;margin:12px 0 0;letter-spacing:-.5px}.notebook-total{display:flex;align-items:baseline;gap:8px;background:white;border:1px solid #e4e6ec;border-radius:12px;padding:14px 24px}.notebook-total strong{font-size:32px;color:var(--book-accent);font-weight:650}.notebook-total span{font-size:13px;color:#828a99}.notebook-page .notebook-tools{display:flex;flex-wrap:wrap;align-items:center;gap:10px;background:white;padding:16px;border:1px solid #e3e6eb;border-radius:12px;margin:24px 0 14px}.notebook-page #book-search{flex:1 1 240px;min-width:0;width:auto;background:#f9fafc;border-color:#e3e5eb;min-height:40px;font-size:13px}.notebook-page #book-course{flex:0 1 210px;min-width:140px;min-height:40px;background:white;border:1px solid #e3e5eb;border-radius:8px;padding:8px;font-size:13px}.notebook-page .notebook-tools button{min-height:40px;padding:9px 12px;font-size:12px;box-shadow:none;white-space:nowrap;color:#697386;background:#f8f9fc;border-color:#e3e6ed}.notebook-page #book-test{background:var(--book-accent);color:white;border-color:var(--book-accent)}.notebook-page #book-listen{color:#56788f;background:#edf3f8;border-color:#d6e3ec}.notebook-page #book-clear{color:#b76473;background:white;border-color:#efdce0}.notebook-page #book-count{font-size:12px;color:#8c94a1;margin:0 0 14px}.notebook-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;align-items:start}.notebook-grid>.empty{grid-column:1 / -1;background:white;border:1px solid #e3e6eb;border-radius:14px;padding:40px 24px;font-size:14px}.notebook-page .book-card{background:white;border:1px solid #e3e6ec;border-radius:14px;padding:22px;box-shadow:0 3px 12px #27334803;min-width:0}.book-card-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.book-word-line{display:flex;align-items:center;flex-wrap:wrap;gap:10px;min-width:0}.notebook-page .card-word{padding:0;border:0;background:transparent;box-shadow:none;color:#30394c;font-size:25px;font-weight:650;line-height:1.4;text-align:left;overflow-wrap:anywhere}.book-word-line .pos-badge{font-size:11px;padding:4px 7px}.book-remove{min-height:28px!important;width:28px;padding:0;font-size:21px;font-weight:400;line-height:1;background:#f7f8fa;color:#9ba2ae;border:0;box-shadow:none;border-radius:7px;flex-shrink:0}.book-remove:hover{background:#fff0f2;color:#b15c6d}.book-definition{display:flex;align-items:baseline;flex-wrap:wrap;gap:8px 18px;margin:9px 0 16px}.book-definition .vocab-ipa{font-size:14px;color:#8c93a0}.book-definition strong{font-size:16px;color:#4d5668;font-weight:500}.book-example:empty{display:none}.book-example .example-block{background:#f7f8fb;border:0;border-radius:10px;padding:14px 16px;margin:0;box-shadow:none}.book-example .example-en{font-size:15px;line-height:1.75;color:#556175;margin:8px 0}.book-example .example-zh{font-size:13px;line-height:1.7;color:#858d9b;margin:7px 0 0}.book-example .example-label{font-size:11px;color:#98a0ac}.book-example button{min-height:30px;font-size:12px;padding:5px 8px;border-color:#e0e5ec}.book-card-actions{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:18px}.book-card-actions>div{display:flex;gap:7px}.book-card-actions button{min-height:36px;padding:8px 10px;font-size:12px;background:#eef1fb;color:#5c69a2;border:1px solid #dce2f2;box-shadow:none}.book-card-actions button[data-book-slow]{color:#4c8577;background:#edf6f2;border-color:#d4e8de}.book-card-actions a{font-size:12px;color:var(--book-accent);text-decoration:none;white-space:nowrap}.book-source{font-size:11px;color:#9ca3af;border-top:1px solid #edf0f4;margin-top:16px;padding-top:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.book-note{padding:12px 14px;background:#fffaee;border-radius:9px;margin-top:12px}.book-note>span{font-size:11px;color:#a18a51}.book-note p{font-size:13px;color:#817555;line-height:1.7;margin:5px 0 0;white-space:pre-wrap;overflow-wrap:anywhere}.book-error{display:flex;justify-content:space-between;align-items:center;gap:12px;background:#fcf2f4;border:1px solid #f2e3e7;border-radius:9px;padding:11px 13px;margin:0 0 14px}.book-error>div{display:flex;align-items:baseline;flex-wrap:wrap;gap:8px;font-size:13px;min-width:0}.book-error>div>span{font-size:11px;color:#b88694}.book-error del{color:#b56479;overflow-wrap:anywhere}.book-error b{font-size:12px;color:#a56b7d;font-weight:500}.book-correction{font-size:11px;white-space:nowrap;color:#ad7284}.book-correction.corrected{color:#4b9175}
@media(max-width:899px){.notebook-page #book-search{flex:1 1 100%;width:100%}.notebook-page #book-course{flex:1 1 100%;width:100%}.notebook-grid{gap:14px}.notebook-page .book-card{padding:18px}.notebook-page .card-word{font-size:23px}}
@media(max-width:650px){.notebook-masthead{padding:10px 0 22px;gap:16px}.notebook-masthead h1{font-size:28px;margin-top:10px}.notebook-total{padding:10px 16px;gap:6px}.notebook-total strong{font-size:27px}.notebook-total span{font-size:12px}.notebook-page .notebook-tools{padding:12px;gap:8px;margin-top:20px}.notebook-page .notebook-tools button{font-size:11px;padding:8px 10px;min-height:38px}.notebook-grid{grid-template-columns:1fr;gap:14px}.notebook-page .book-card{padding:18px}.book-definition{margin:8px 0 14px}.book-card-actions{gap:8px}.book-card-actions button{min-height:38px;padding:8px 9px;font-size:12px}.book-source{margin-top:14px}.book-error{padding:10px 12px}.book-example .example-block{padding:12px 14px}}
@media print{.notebook-masthead,.notebook-tools,.book-card-actions,.book-remove{display:none!important}.notebook-grid{display:block}.notebook-page .book-card{break-inside:avoid;box-shadow:none;margin:10px 0}}
@media(max-width:650px){.course-directory-page .lesson-directory-heading{display:flex;flex-direction:row;flex-wrap:nowrap;justify-content:space-between;align-items:center;gap:10px}.course-directory-page .lesson-directory-heading>div:first-child{flex:0 0 auto}.course-directory-page .lesson-directory-heading h2{font-size:19px;white-space:nowrap}.course-directory-page .lesson-directory-actions{display:flex;flex:0 1 auto;flex-wrap:wrap;justify-content:flex-end;gap:6px}.course-directory-page .lesson-directory-actions button{white-space:nowrap;font-size:11px;padding:8px 9px;min-height:36px}}
@media(max-width:360px){.course-directory-page .lesson-directory-heading{gap:7px}.course-directory-page .lesson-directory-heading h2{font-size:17px}.course-directory-page .lesson-directory-actions{gap:4px}.course-directory-page .lesson-directory-actions button{padding:7px;font-size:10px}}
@media(max-width:650px){.notebook-page .notebook-tools{display:grid;grid-template-columns:1.25fr .65fr 1.15fr 1.2fr .65fr;gap:8px 5px}.notebook-page #book-search,.notebook-page #book-course{grid-column:1 / -1;width:100%;min-width:0}.notebook-page .notebook-tools button{min-width:0;white-space:nowrap;padding:8px 3px;font-size:11px;min-height:38px}.notebook-page #book-listen{font-size:0}.notebook-page #book-listen:after{content:'连续听';font-size:11px}}
@media(max-width:360px){.notebook-page .notebook-tools{padding:10px;gap:8px 4px}.notebook-page .notebook-tools button,.notebook-page #book-listen:after{font-size:10px}.notebook-page #book-listen{font-size:0}}
.course-directory-summary{display:flex;align-items:center;gap:22px}.course-directory-summary>span:not(.course-access){display:inline-flex;align-items:center;gap:7px;min-height:32px;line-height:1}.course-directory-summary strong{font-size:22px;font-weight:650;color:#363f52;line-height:1.2;margin:0}.course-directory-summary small{font-size:13px;color:#7a8292;font-weight:400;line-height:1.2}.course-directory-summary .course-access{display:inline-flex;align-items:center;align-self:center;line-height:1.4;margin:0}
@media(max-width:650px){.course-directory-summary{gap:18px;align-items:center}.course-directory-summary strong{font-size:21px}.course-directory-summary small{font-size:12px}.course-directory-summary>span:not(.course-access){gap:6px;min-height:30px}}