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.button{min-height:43px;font-size:13px;flex-shrink:0}.practice-footer kbd{background:#ffffff24;border-color:#ffffff40;color:white}.keyboard-card{margin-top:21px;padding:22px 25px 17px;border:1px solid var(--line);background:var(--paper);border-radius:22px;box-shadow:var(--shadow)}.keyboard-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:17px;gap:15px}.keyboard-heading h2{display:flex;gap:8px;align-items:center;font-size:15px}.keyboard-heading h2 svg{width:19px;height:19px;color:#7c8e6c}.hint-toggle{display:flex;gap:7px;align-items:center;min-height:32px;font-size:12px;color:#7a6a85}.toggle-track{width:31px;height:18px;padding:3px;background:#a48cb7;display:block;border-radius:20px}.toggle-track i{display:block;width:12px;height:12px;background:#fffefa;border-radius:50%;transform:translateX(13px);transition:transform .15s}.hint-toggle[aria-pressed=false] .toggle-track{background:#c3cbb7}.hint-toggle[aria-pressed=false] .toggle-track 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.12s}.key[data-finger=pinky]{--key-bg:#f2e5e2;--key-border:#e6cec7;--key-bottom:#d8bdb4;--key-ink:#986e61}.key[data-finger=ring]{--key-bg:#f4ecd7;--key-border:#e6d8b3;--key-bottom:#d5c292;--key-ink:#968043}.key[data-finger=middle]{--key-bg:#e5eddd;--key-border:#d3dfc3;--key-bottom:#becea9;--key-ink:#72865d}.key[data-finger=thumb]{--key-bg:#f1f2e9;--key-border:#dfe3d3;--key-bottom:#cfd5c1;--key-ink:#7b8770}.key.wide{flex:1.5;font:10px var(--font);background:#f0eee9;color:#84877c;border-color:#e1dfd7;border-bottom-color:#d0cfc3}.key.shift-key{flex:1.6}.key.space-key{flex:none;width:45%;height:33px;font:11px var(--font)}.key.home-key:after{content:'';position:absolute;width:8px;height:2px;background:currentColor;bottom:5px;border-radius:2px;opacity:.6}.key.next-key{background:#9277a8;border-color:#826496;border-bottom-color:#705082;color:#fffefa;box-shadow:0 0 0 3px #dfd2e952}.key.pressed,.key.shift-on{transform:translateY(2px);border-bottom-width:1px;filter:brightness(.94)}.key.shift-on{background:#d4c2e1;color:#644778}.keyboard-bottom{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:14px;color:#7e8874;font-size:10px;flex-wrap:wrap}.keyboard-bottom>span{display:flex;align-items:center;gap:5px}.finger-dot{width:7px;height:7px;display:inline-block;border-radius:2px}.finger-dot.pinky{background:#d6b2a6}.finger-dot.ring{background:#d5c18d}.finger-dot.middle{background:#b5c99d}.finger-dot.index{background:#b6a0c8}.coach-card{border:1px solid #e2d9e9;background:#eee9f3;border-radius:22px;padding:19px 20px;text-align:center;position:relative;overflow:hidden}.coach-card .star-mascot{stroke:none;width:145px;height:124px}.coach-card h2{font-size:16px;color:#7e628f;margin-bottom:9px}.coach-card p{font-size:12px;line-height:1.9;color:#7c6b86;background:#fffefa;padding:13px 12px;border-radius:12px;position:relative}.coach-card p:before{content:'';position:absolute;top:-4px;left:calc(50% - 5px);width:10px;height:10px;background:#fffefa;transform:rotate(45deg)}.practice-aside .daily-card{margin-top:20px;padding:21px}.small-tip{display:flex;gap:9px;align-items:flex-start;font-size:12px;line-height:1.9;color:#7c826e;margin:20px 5px}.small-tip svg{width:18px;height:18px;color:#a28b55;margin-top:3px}.small-tip strong{display:block;font-size:12px;color:#6e785f;font-weight:500}.lesson-info{border:1px solid var(--line);border-radius:15px;padding:17px 18px;margin-top:20px;background:#f1f3e9;font-size:12px;line-height:1.9;color:#7b836d}.lesson-info strong{font-size:13px;display:block;color:#627457;margin-bottom:4px}.tone-options{padding:25px 27px;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}.tone-option{display:flex;align-items:center;flex-direction:column;justify-content:center;position:relative;min-height:115px;border:1.5px solid #e2d9e8;border-bottom:4px solid #d5c7df;border-radius:13px;background:#faf7fc;color:#8e739d;padding:9px 4px}.tone-option .tone-mark{font:37px/1 var(--rounded);margin-bottom:10px}.tone-option strong{font-size:13px;font-weight:550}.tone-option small{font-size:10px;margin-top:3px;color:#8e7e98}.tone-option kbd{position:absolute;right:6px;top:6px;font-size:8px;background:#f2ecf5;border-color:#e9e0ee;color:#a695b0}.tone-option.wrong{background:#f8e9e2;border-color:#d5a395;color:#a66b58}.tone-option.correct{background:#e9f1e1;border-color:#a7bf90;color:#67834f}.tone-option:disabled{opacity:1}.tone-explainer{padding:0 27px 21px;font-size:12px;line-height:1.8;color:#7c8571;text-align:center}.tone-keyboard-note{display:flex;align-items:center;gap:12px;padding:20px 23px;margin-top:20px;border:1px dashed #d9dfce;border-radius:16px;color:#778369;font-size:13px;line-height:1.8}.tone-keyboard-note svg{width:27px;height:27px;color:#a28bb4}.free-card{background:var(--paper);border:1px solid var(--line);border-radius:22px;padding:28px;box-shadow:var(--shadow)}.free-intro{display:flex;gap:20px;align-items:center;margin-bottom:22px}.free-intro-art{height:80px;width:80px;background:var(--amber-bg);color:#a88d54;border:1px solid #e8dfc3;border-radius:20px;display:grid;place-items:center;flex-shrink:0}.free-intro-art svg{width:37px;height:37px}.free-intro h2{font-size:21px;margin-bottom:8px}.free-intro p{font-size:13px;color:var(--muted)}.free-textarea{resize:vertical;min-height:200px;max-height:500px;width:100%;border:2px solid #dae1ce;border-radius:16px;background:#f9fbf3;padding:20px;color:#5d754f;font:27px/1.8 var(--rounded);letter-spacing:3px;caret-color:#8d749f}.free-textarea::placeholder{font:14px/2 var(--font);letter-spacing:1px;color:#88977d}.free-textarea:focus{outline:none;border-color:#a5b88f;box-shadow:0 0 0 4px 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p{color:var(--muted);font-size:14px;line-height:1.9;max-width:430px}.review-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.review-item{border:1px solid #e6dfce;background:var(--paper);border-radius:16px;padding:20px;display:flex;align-items:center;gap:15px}.review-item strong{display:block;font:26px var(--rounded);color:#947b5a;overflow-wrap:anywhere}.review-item p{color:#85816d;font-size:12px;margin-top:4px}.growth-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;margin-bottom:28px}.growth-stat{border:1px solid var(--line);background:var(--paper);padding:24px;border-radius:20px;display:flex;align-items:center;gap:17px}.growth-stat>svg{color:#a790b9;width:30px;height:30px}.growth-stat strong{font:33px var(--rounded);color:#708361;display:block;line-height:1.1}.growth-stat small{color:#7f8977;font-size:12px;display:block;margin-top:7px}.growth-columns{display:grid;grid-template-columns:minmax(0,1fr) 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@media(min-width:1500px){.header-inner,.page-shell{max-width:1440px;padding-left:48px;padding-right:48px}.page-footer{max-width:1344px}.hero{padding-left:42px}.hero-art{right:25px;width:310px}.hero h2{font-size:39px}.hero-grid{grid-template-columns:minmax(0,1fr) 300px}.practice-layout{grid-template-columns:minmax(0,1fr) 274px}.exercise-scene{min-height:236px}.question-art{width:185px}.question-art svg{width:190px;height:190px}.pinyin-display{font-size:65px}.key{height:44px}}
@media(max-width:1200px){.header-inner,.page-shell{padding-left:26px;padding-right:26px}.header-inner{gap:18px;min-height:87px}.brand{font-size:21px;gap:10px}.brand small{font-size:9px;letter-spacing:2px}.brand-icon{width:38px}.brand-icon svg{width:38px;height:38px}.brand-icon:before{left:14px}.brand-icon:after{left:23px}.top-nav{gap:1px}.top-nav>a{padding:11px 10px;font-size:13px;gap:6px}.header-actions{gap:12px}.parent-button{font-size:12px}.hero-grid{grid-template-columns:minmax(0,1fr) 260px;gap:20px}.hero{padding:28px;min-height:285px}.hero h2{font-size:31px}.hero p{font-size:12px}.hero-art{right:-25px;width:260px;transform:scale(.89);transform-origin:bottom right}.hero-copy{max-width:360px}.hero-note{font-size:10px}.daily-card{padding:22px}.destination-card{padding:21px 19px;gap:14px}.destination-illustration{width:63px;height:65px}.destination-card h3{font-size:18px}.destination-card p{font-size:11px}.course-grid,.destination-grid{gap:18px}.course-preview{font-size:29px;margin-left:19px;margin-right:19px}.course-card-top{padding-left:19px;padding-right:19px}.course-card-body{padding-left:19px;padding-right:19px}.course-card h3{font-size:16px}.page-footer{margin-left:26px;margin-right:26px}.practice-layout{grid-template-columns:minmax(0,1fr) 230px;gap:20px}.keyboard-card{padding:21px 20px 16px}.keyboard-row{gap:5px}.key{height:39px;font-size:13px}.key.wide{font-size:9px}.practice-footer{gap:10px}.practice-footer .button{font-size:12px;padding-left:14px;padding-right:14px}.feedback{font-size:11px}.exercise-scene{gap:22px}.growth-stat{padding:21px;gap:12px}.growth-stat strong{font-size:29px}}
@media(max-width:1030px){.parent-button span{display:none}.parent-button{width:36px;justify-content:center}.header-actions{gap:8px}.top-nav>a{font-size:12px;padding-left:9px;padding-right:9px}.hero-art{right:-37px;transform:scale(.76)}.hero h2{font-size:29px}.hero p{max-width:270px}.hero-actions{gap:12px}.hero-note{display:none}.destination-card{gap:12px;padding:18px 15px}.destination-illustration{width:54px;height:58px}.destination-card h3{font-size:17px}.destination-card p{font-size:10px}.destination-card .card-arrow{width:17px;height:17px}.destination-grid{gap:15px}.practice-layout{grid-template-columns:minmax(0,1fr)}.practice-aside{display:grid;grid-template-columns:1fr 1fr;gap:20px}.practice-aside .daily-card{margin:0}.coach-card{display:flex;align-items:center;flex-wrap:wrap;justify-content:center;padding:20px}.coach-card .star-mascot{width:95px;height:90px}.coach-card h2{width:calc(100% - 95px);font-size:17px}.coach-card p{width:100%}.practice-aside .small-tip,.practice-aside .lesson-info{display:none}.practice-heading{margin-bottom:20px}.key{height:43px;font-size:15px}.keyboard-card{padding:23px 25px 18px}.growth-stats{gap:14px}.growth-stat{padding:19px 15px;gap:10px}.growth-stat>svg{width:24px;height:24px}.growth-stat small{font-size:11px}.growth-columns{gap:20px}.growth-panel{padding:22px}.badge-grid{gap:8px}.badge{font-size:11px}.badge small{font-size:9px}}
@media(max-width:850px){.header-inner{gap:12px;padding-left:22px;padding-right:22px}.brand{font-size:20px;gap:8px}.brand small{font-size:8px}.top-nav>a{font-size:11px;padding:11px 8px;gap:5px}.top-nav svg{width:16px;height:16px}.icon-button{width:36px;height:36px}.parent-button{width:30px}.page-shell{padding-left:24px;padding-right:24px}.hero-grid{grid-template-columns:minmax(0,1fr) 230px;gap:17px}.hero{padding:26px;min-height:277px}.hero h2{font-size:27px}.hero p{max-width:230px;font-size:12px}.hero-art{right:-59px;transform:scale(.65)}.hero-copy{max-width:320px}.hero .button{font-size:13px;padding:10px 16px}.daily-card{padding:20px}.daily-number{margin-top:19px}.daily-bottom{gap:9px}.daily-stat{gap:5px}.daily-stat small{font-size:10px}.course-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:17px}.home-courses{grid-template-columns:repeat(3,minmax(0,1fr))}.home-courses .course-card-top{padding:17px 15px 0}.home-courses .course-preview{font-size:24px;min-height:72px;margin:14px 15px}.home-courses .course-card-body{padding:0 15px 18px}.home-courses h3{font-size:15px}.home-courses .caption{font-size:11px}.home-courses .course-card-footer{flex-wrap:wrap;gap:8px;margin-top:13px}.home-courses .course-card-footer .button{margin-left:auto}.destination-card{padding:19px 17px;gap:11px;flex-wrap:wrap;min-height:165px}.destination-card>div:not(.destination-illustration){width:100%;order:2}.destination-card .card-arrow{position:absolute;right:16px;top:38px}.destination-illustration{width:56px;height:52px;border-radius:12px}.destination-card h3{font-size:18px;margin-bottom:4px}.destination-card p{font-size:11px}.page-heading{gap:15px}.page-heading h1{font-size:26px}.soft-label{font-size:10px;padding:7px 11px}.catalog-summary .summary-pill{padding:10px 12px}.catalog-summary strong{font-size:21px}.catalog-toolbar .caption{display:none}.growth-stats{grid-template-columns:repeat(2,minmax(0,1fr))}.growth-stat{padding:22px;gap:17px}.growth-columns{grid-template-columns:1fr}.growth-panel{padding:26px}.badge{padding:24px;font-size:13px}.badge small{font-size:11px}.review-list{grid-template-columns:repeat(2,minmax(0,1fr))}.page-footer{margin-left:24px;margin-right:24px}}
@media(max-width:660px){.site-header{position:relative}.header-inner{min-height:78px;padding:14px 20px 0;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px 15px}.brand{font-size:20px}.brand small{font-size:8px;letter-spacing:2px}.brand-icon{width:34px;height:40px}.brand-icon svg{width:34px;height:34px}.brand-icon:before{left:12px;top:19px}.brand-icon:after{left:21px;top:19px}.brand-icon i{width:6px;height:6px;top:0}.header-actions{grid-column:2;grid-row:1}.parent-button{width:34px}.icon-button{width:35px;height:35px}.icon-button svg{width:18px;height:18px}.top-nav{grid-row:2;grid-column:1/-1;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:3px;margin-top:3px;padding:3px 0 9px}.top-nav>a{justify-content:center;padding:9px 3px;min-height:42px;font-size:11px;gap:5px;border-radius:9px}.top-nav svg{width:15px;height:15px}.page-shell{padding:24px 18px 30px;min-height:calc(100vh - 210px)}.page-heading{margin-bottom:20px;align-items:flex-start}.page-heading h1{font-size:23px;letter-spacing:.3px}.greeting .hello-spark{font-size:27px}.page-heading p{font-size:12px;line-height:1.8;max-width:310px}.page-heading>.soft-label{display:none}.hero-grid{grid-template-columns:minmax(0,1fr);gap:17px}.hero{min-height:280px;padding:26px 24px;border-radius:22px;align-items:flex-start}.hero-copy{max-width:100%}.hero h2{font-size:28px;line-height:1.55;max-width:255px}.hero-eyebrow{font-size:10px;letter-spacing:1.6px;margin-bottom:12px}.hero p{font-size:12px;max-width:205px;margin-top:11px}.hero-art{right:-42px;bottom:0;transform:scale(.65)}.hero:before{width:280px;height:280px;right:-95px;top:0}.hero:after{width:230px;height:230px;right:-65px;top:30px}.hero-actions{margin-top:23px}.hero .button{font-size:13px;min-height:43px;padding:10px 15px}.daily-card{padding:20px 22px;border-radius:19px}.hero-grid>.daily-card{display:grid;grid-template-columns:1fr 1fr;column-gap:22px;align-items:center}.hero-grid .panel-heading h2{font-size:14px}.hero-grid .panel-heading svg{width:17px;height:17px}.hero-grid .daily-card>.caption{grid-column:1;margin-top:4px;font-size:11px}.hero-grid .daily-number{grid-column:2;grid-row:1/3;margin:0 0 0 auto;gap:5px;font-size:16px}.hero-grid .daily-number strong{font-size:32px}.hero-grid .daily-number small{display:none}.hero-grid .progress-track{grid-column:1/-1;margin-top:14px;height:7px}.hero-grid .daily-message{grid-column:1/-1;font-size:11px;margin-top:7px}.hero-grid .daily-bottom{grid-column:1/-1;padding-top:14px;margin-top:13px;justify-content:flex-start;gap:35px}.hero-grid .daily-stat{gap:9px}.hero-grid .daily-stat strong{font-size:19px;display:inline}.hero-grid .daily-stat small{display:inline;margin-left:6px;font-size:10px}.hero-grid .daily-stat>svg{width:21px;height:21px}.hero-grid .daily-stat .target-icon{font-size:25px}.section-heading{margin-top:26px;margin-bottom:14px}.section-heading h2{font-size:19px}.section-heading>p{display:none}.section-heading>a{font-size:11px}.destination-grid{grid-template-columns:1fr;gap:12px}.destination-card{min-height:100px;padding:19px 20px;flex-wrap:nowrap;gap:18px;border-radius:17px}.destination-illustration{width:62px;height:58px;border-radius:14px}.destination-card>div:not(.destination-illustration){width:auto;order:0}.destination-card .card-arrow{position:static;width:19px;height:19px}.destination-card h3{font-size:18px}.destination-card p{font-size:12px}.course-grid,.home-courses{grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}.home-courses .course-card:last-child{display:none}.course-card{border-radius:17px}.course-card-top,.home-courses .course-card-top{padding:16px 15px 0;gap:6px}.course-number{height:22px;width:22px;font-size:10px;border-radius:6px}.course-category{font-size:10px}.course-preview,.home-courses .course-preview{font-size:26px;min-height:75px;margin:14px 15px;letter-spacing:1px}.course-card.keyboard-course .course-preview{font-size:19px}.course-card-body,.home-courses .course-card-body{padding:0 15px 16px}.course-card h3,.home-courses h3{font-size:15px}.course-card .caption,.home-courses .caption{font-size:11px;line-height:1.8;min-height:42px}.course-card-footer,.home-courses .course-card-footer{flex-wrap:wrap;gap:10px;margin-top:14px;align-items:center}.course-meta{font-size:10px;white-space:nowrap}.course-card-footer .button{margin-left:auto;min-height:36px;font-size:11px;padding:7px 10px}.course-card-footer .button svg{width:13px;height:13px}.completed-tag{font-size:9px}.completed-tag svg{width:11px;height:11px}.home-bottom{align-items:flex-start;padding:15px 17px;font-size:11px;line-height:1.9}.home-bottom>span{align-items:flex-start}.home-bottom>span svg{margin-top:3px;flex-shrink:0}.home-bottom .text-button{font-size:11px;white-space:nowrap}.page-footer{margin:0 18px;padding:18px 0 22px;font-size:10px}.page-footer>span:last-child{display:none}.page-footer svg{width:16px;height:16px}.breadcrumbs{font-size:11px;gap:7px;margin-bottom:17px}.catalog-heading{display:block}.catalog-heading h1{font-size:27px}.catalog-summary{margin-top:16px;gap:9px}.summary-pill{font-size:11px;padding:8px 12px}.catalog-summary .summary-pill{padding:8px 12px}.catalog-summary strong{font-size:20px}.catalog-toolbar{display:block;margin-bottom:19px}.filter-tabs{display:flex;padding:4px;width:fit-content}.filter-tabs button{font-size:12px;padding:8px 13px;min-height:36px}.utility-links{gap:14px;margin-top:10px}.utility-links>a{font-size:12px}.practice-heading{gap:12px;align-items:flex-start}.practice-heading h1{font-size:22px;letter-spacing:.3px}.practice-heading p{font-size:11px;max-width:240px;line-height:1.8}.practice-heading .button{font-size:11px;min-height:36px;padding:8px 11px;gap:5px}.practice-heading .button svg{width:13px;height:13px}.practice-card{border-radius:20px}.practice-topline{padding:18px 20px 13px}.practice-topline>span:first-child{font-size:11px;gap:5px}.practice-topline svg{height:15px;width:15px}.question-count{font-size:11px}.question-count strong{font-size:18px}.question-progress{padding-left:20px;padding-right:20px;gap:5px}.question-progress i{height:4px}.exercise-scene{margin:18px 17px 0;padding:20px 14px;min-height:195px;gap:10px;border-radius:14px}.question-art{width:113px;height:135px}.question-art svg{width:127px;height:127px}.question-copy{min-width:0;flex:1;max-width:230px}.pinyin-display{font-size:45px;letter-spacing:2px}.pinyin-display.long{font-size:25px;letter-spacing:.5px}.chinese-display{font-size:20px;margin-top:6px}.chinese-display.example{font-size:12px;letter-spacing:0;line-height:1.8}.scene-spark{left:14px;top:9px;font-size:22px}.scene-spark.two{right:13px;bottom:10px;font-size:13px}.listen-button{font-size:11px;padding:7px 11px;min-height:35px}.question-note{margin:15px 21px 0;font-size:11px;line-height:1.9;gap:7px}.question-note svg{width:14px;height:14px;margin-top:3px}.answer-area{padding:18px 20px 19px}.answer-label{font-size:13px;margin-bottom:10px}.answer-input{min-height:61px;font-size:25px;letter-spacing:3px;padding:10px 12px;border-radius:11px}.answer-input::placeholder{font-size:13px;letter-spacing:1px}.input-meta{font-size:10px;line-height:1.7}.input-meta kbd{font-size:9px}.practice-footer{display:flex;flex-direction:column;align-items:stretch;margin-left:20px;margin-right:20px;padding:14px 0 20px;gap:9px}.feedback{font-size:11px;min-height:33px}.feedback-dot{width:24px;height:24px;font-size:15px}.practice-footer .button{width:100%;min-height:44px;font-size:13px}.keyboard-card{margin-top:17px;padding:18px 11px 15px;border-radius:18px}.keyboard-heading{padding:0 5px;margin-bottom:14px;gap:10px}.keyboard-heading h2{font-size:13px;gap:6px}.keyboard-heading h2 svg{width:17px;height:17px}.hint-toggle{font-size:10px;gap:5px}.toggle-track{width:27px;height:16px;padding:2px}.toggle-track i{width:12px;height:12px;transform:translateX(11px)}.keyboard{gap:6px}.keyboard-row{gap:3px}.key{height:38px;border-radius:5px;font-size:12px;border-bottom-width:3px}.key.wide{font-size:7px;flex:1.25}.key.shift-key{flex:1.45;font-size:7px}.key.space-key{height:30px;font-size:10px}.key.next-key{box-shadow:0 0 0 2px #dfd2e975}.keyboard-bottom{font-size:9px;gap:8px;margin-top:12px;padding:0 4px}.keyboard-bottom>span:last-child{gap:4px}.finger-dot{width:6px;height:6px}.practice-aside{grid-template-columns:1fr;gap:16px}.practice-aside .daily-card{display:none}.coach-card{display:flex;flex-wrap:nowrap;gap:13px;padding:16px 19px;border-radius:18px;text-align:left}.coach-card .star-mascot{width:77px;height:77px;flex-shrink:0}.coach-card h2{display:none}.coach-card p{font-size:12px;width:auto;flex:1;background:transparent;padding:0}.coach-card p:before{display:none}.tone-options{padding:20px 18px;gap:6px;grid-template-columns:repeat(5,minmax(0,1fr))}.tone-option{border-radius:9px;min-height:100px;padding:13px 2px 8px}.tone-option .tone-mark{font-size:29px;margin-top:4px;margin-bottom:9px}.tone-option strong{font-size:11px}.tone-option small{font-size:8px;margin-top:4px;white-space:nowrap}.tone-option kbd{font-size:7px;right:4px;top:4px;padding:0 3px}.tone-explainer{font-size:11px;padding:0 20px 18px;line-height:1.9}.tone-keyboard-note{padding:17px 20px;font-size:12px;margin-top:16px;gap:10px}.tone-keyboard-note svg{width:23px;height:23px}.part-equation{font-size:15px;gap:5px}.part-equation span{padding:2px 5px}.free-card{padding:22px 20px;border-radius:20px}.free-intro{gap:13px}.free-intro-art{height:60px;width:60px;border-radius:15px}.free-intro-art svg{width:28px;height:28px}.free-intro h2{font-size:18px;margin-bottom:5px}.free-intro p{font-size:11px;line-height:1.9}.free-textarea{font-size:24px;min-height:195px;padding:16px;letter-spacing:2px}.free-textarea::placeholder{font-size:12px}.free-footer{font-size:10px}.free-footer .button{font-size:11px;min-height:36px;padding:8px 12px}.review-banner{padding:19px;gap:12px;border-radius:17px;flex-wrap:wrap}.review-banner>svg{width:24px;height:24px}.review-banner>div{width:calc(100% - 45px)}.review-banner h2{font-size:17px}.review-banner p{font-size:11px;line-height:1.9}.review-banner .button{width:100%;min-height:41px;font-size:12px}.review-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.review-item{padding:16px 14px}.review-item strong{font-size:22px}.review-item p{font-size:11px}.growth-stats{gap:12px;margin-bottom:20px}.growth-stat{padding:19px 16px;gap:13px;border-radius:17px}.growth-stat>svg{width:24px;height:24px}.growth-stat strong{font-size:28px}.growth-stat small{font-size:11px;margin-top:5px}.growth-columns{gap:18px}.growth-panel{padding:23px 20px;border-radius:20px}.growth-panel h2{font-size:17px}.badge-grid{margin-top:19px;gap:8px}.badge{padding:18px 7px;font-size:10px;border-radius:12px}.badge>svg{width:30px;height:30px;margin-bottom:11px}.badge small{font-size:9px;line-height:1.8}.skill-progress{margin-top:22px}.skill-progress>div:first-child{font-size:12px}.storage-note{font-size:11px}.empty-state{min-height:390px;padding:25px;gap:14px}.empty-state h2{font-size:22px}.empty-state p{font-size:12px}.empty-state .button{font-size:13px}.back-button{font-size:12px}.dialog-title{font-size:23px}dialog{padding:32px 25px;border-radius:22px}.dialog-copy{font-size:13px}.dialog-copy p{margin:14px 0}.dialog-actions{gap:10px;margin-top:23px}.dialog-actions .button{font-size:12px;min-height:43px}.dialog-stats{gap:35px;font-size:11px}.dialog-stats strong{font-size:30px}.dialog-close{width:37px;height:37px;font-size:25px;right:11px;top:11px}.dialog-copy .source-links{font-size:11px}.toast{font-size:12px;padding:11px 16px;width:max-content;max-width:calc(100vw - 30px)}}
@media(max-width:360px){.header-inner{padding-left:15px;padding-right:15px;gap:8px}.brand{font-size:18px;gap:7px}.brand small{font-size:7px}.header-actions{gap:4px}.parent-button{width:29px}.top-nav>a{font-size:10px;gap:4px}.top-nav svg{width:14px;height:14px}.page-shell{padding-left:14px;padding-right:14px}.page-heading h1{font-size:21px}.hero{padding:24px 20px;min-height:277px}.hero h2{font-size:25px}.hero-art{right:-58px;transform:scale(.58)}.hero p{max-width:187px;font-size:11px}.hero .button{font-size:12px;padding:10px 13px}.hero-eyebrow{font-size:9px}.course-grid{gap:10px}.course-card-top,.home-courses .course-card-top{padding-left:12px;padding-right:12px}.course-preview,.home-courses .course-preview{font-size:23px;margin-left:12px;margin-right:12px;min-height:69px}.course-card-body,.home-courses .course-card-body{padding-left:12px;padding-right:12px}.course-card h3,.home-courses h3{font-size:14px}.course-card .caption,.home-courses .caption{font-size:10px;min-height:39px}.completed-tag{font-size:8px}.completed-tag svg{display:none}.destination-card{gap:14px;padding:17px}.destination-card h3{font-size:17px}.destination-card p{font-size:11px}.destination-illustration{width:55px;height:55px}.home-bottom{flex-wrap:wrap;gap:3px}.home-bottom .text-button{margin-left:auto}.practice-heading h1{font-size:20px}.practice-heading .button{font-size:10px;padding:8px 9px}.question-art{width:89px;height:117px}.question-art svg{width:109px;height:109px}.exercise-scene{gap:9px;min-height:182px;padding:21px 11px}.pinyin-display{font-size:40px}.pinyin-display.long{font-size:23px}.chinese-display.example{font-size:11px}.scene-spark{font-size:19px}.practice-topline{padding-left:18px;padding-right:18px}.practice-topline>span:first-child{font-size:10px}.question-note{font-size:10px;margin-left:19px;margin-right:19px}.answer-area{padding-left:18px;padding-right:18px}.answer-input{font-size:23px;letter-spacing:2px}.input-meta{font-size:9px}.tone-options{padding-left:14px;padding-right:14px;gap:4px}.tone-option{min-height:95px}.tone-option strong{font-size:10px}.tone-option small{font-size:7px}.tone-option .tone-mark{font-size:27px}.keyboard-card{padding-left:8px;padding-right:8px}.key{font-size:11px;height:36px}.key.wide{font-size:6px}.key.shift-key{font-size:6px}.keyboard-row{gap:2.5px}.keyboard-bottom{font-size:8px}.keyboard-heading h2{font-size:12px}.hint-toggle{font-size:9px}.growth-stat{padding:18px 13px;gap:10px}.growth-stat strong{font-size:25px}.growth-stat small{font-size:10px}.growth-stat>svg{width:22px;height:22px}.catalog-summary .summary-pill{padding:8px 10px}.catalog-toolbar .filter-tabs button{padding-left:10px;padding-right:10px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
.compact-preview{font-size:23px;letter-spacing:1px}
@media(max-width:660px){.hero-art{right:-7px}.compact-preview{font-size:20px}}
@media(max-width:360px){.hero-art{right:-14px}.compact-preview{font-size:18px}}
.official-source-list{display:grid;gap:12px;margin-top:20px}.official-source{display:block;background:#f1f4e9;border:1px solid #dce4d1;border-radius:13px;padding:16px 18px}.official-source:hover{background:#e8eedf}.official-source strong{display:flex;align-items:center;justify-content:space-between;gap:8px;color:#5d7550;font-size:14px;font-weight:550}.official-source strong svg{width:17px;height:17px}.official-source span{display:block;margin-top:7px;color:#768369;font-size:12px;line-height:1.9}.source-status{font-size:12px;line-height:1.9;color:#8b7e65;margin-top:18px}
@media(max-width:660px){.official-source{padding:14px 15px}.official-source strong{font-size:13px}.official-source span,.source-status{font-size:11px}}

/* Recorded teaching audio */
.audio-caption{font-size:12px;line-height:1.8;color:#73806a;margin:8px 0 0}.audio-status{font-size:12px;line-height:1.7;color:#607852;min-height:20px;margin-top:5px}.listen-button.is-playing{background:#e0ebd6;box-shadow:0 0 0 3px #dce8d180}.audio-room-link{font-size:12px;color:#697e59;display:inline-block;margin-top:5px}.audio-room-intro{display:flex;align-items:center;gap:18px;padding:22px 26px;background:#eef2e7;border:1px solid #dce5d2;border-radius:18px;color:#586f4b}.audio-room-intro>svg{width:30px;height:30px;flex-shrink:0}.audio-room-intro strong{font-size:17px}.audio-room-intro p{font-size:13px;line-height:1.9;margin:6px 0 0}.room-status{margin:12px 0 20px}.audio-group{margin:28px 0}.audio-group h2{font-size:20px;margin-bottom:16px;display:flex;align-items:center;gap:15px}.audio-group h2 small{font-size:12px;font-weight:400;color:#88947c}.audio-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(145px,1fr));gap:14px}.audio-tile{position:relative;display:flex;flex-direction:column;align-items:flex-start;text-align:left;padding:21px 18px;background:#fffef9;border:1px solid #e4e5da;border-radius:17px;min-height:137px;color:#536249;transition:background .18s}.audio-tile:hover,.audio-tile.is-playing{background:#edf3e5;border-color:#b8caab}.audio-tile strong{font-size:28px;font-weight:500;line-height:1.4}.audio-tile small{font-size:12px;margin-top:6px;color:#7a8371}.audio-tile span{font-size:12px;margin-top:14px;color:#7e6e9c}.audio-tile>svg{width:20px;height:20px;position:absolute;right:17px;bottom:17px;color:#8d9b7d}.audio-credits{font-size:12px;line-height:2;color:#7d8575;border-top:1px solid #e1e5d7;padding-top:22px;margin-top:35px}.audio-credits a,.dialog-copy a{color:#677c58;text-decoration:underline;text-underline-offset:3px}.utility-links{flex-wrap:wrap}
@media(max-width:660px){.audio-room-intro{padding:17px;gap:12px}.audio-room-intro strong{font-size:14px}.audio-room-intro p{font-size:11px}.audio-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.audio-tile{padding:17px 14px;min-height:130px}.audio-tile strong{font-size:26px}.audio-group h2{font-size:17px}.audio-caption,.audio-status,.audio-room-link{font-size:10px}.audio-credits{font-size:10px}.utility-links{gap:12px}}

.audio-speed{display:flex;justify-content:flex-start;gap:6px;flex-wrap:wrap;margin:12px 0}.question-copy .audio-speed{justify-content:center;margin:9px 0}.audio-speed button{padding:7px 11px;min-height:35px;border:1px solid #d8e0ce;border-radius:10px;background:#fffef9;color:#768269;font-size:12px;cursor:pointer}.audio-speed button[aria-pressed=true]{background:#e5eedb;border-color:#b5c8a3;color:#506d3f}.audio-source-badge{display:inline-block;vertical-align:middle;font-size:10px;line-height:1.6;font-style:normal;color:#657d52;background:#eaf1e0;padding:2px 7px;border-radius:6px;white-space:nowrap}.audio-source-badge.ai{color:#806291;background:#efe8f4}.audio-tile .audio-source-badge{margin-top:9px}.audio-tile{min-height:165px}.tone-compare{background:#f3f0f7;border:1px solid #e0d8e8;border-radius:14px;padding:15px 18px;margin:15px 0;max-width:520px}.tone-compare p{display:flex;flex-wrap:wrap;gap:14px;margin:0 0 10px;color:#77618c;font-size:12px}.tone-compare p strong{font-weight:500}.tone-compare>div{display:flex;gap:10px}.tone-compare button{display:flex;align-items:center;justify-content:center;gap:7px;min-height:40px;flex:1;background:#fffefb;border:1px solid #d9cee3;border-radius:10px;color:#7e6596;font-size:14px;cursor:pointer}.tone-compare button strong{font-weight:500}.tone-compare button svg{width:16px;height:16px}.tone-compare button.is-playing{background:#e6dded}.question-copy .tone-compare{margin:12px auto 0;padding:10px;max-width:285px}.question-copy .tone-compare p{gap:5px;font-size:10px;justify-content:center}.question-copy .tone-compare button{min-height:34px;font-size:12px}
@media(max-width:660px){.audio-speed button{font-size:11px;padding:6px 9px;min-height:33px}.tone-compare{padding:13px}.tone-compare p{font-size:11px;gap:9px}.question-copy .tone-compare p{font-size:8px;gap:4px}.question-copy .tone-compare{padding:7px}.question-copy .tone-compare button{font-size:10px;gap:4px;min-height:31px}.question-copy .tone-compare button svg{width:13px;height:13px}.audio-source-badge{font-size:9px}.audio-tile{min-height:165px}}