

:root{--paper:#f7f6ef;--surface:#fffef9;--ink:#193d30;--green:#225c43;--muted:#4c665b;--quiet:#e9eee5;--gold:#f4d77a;--focus:#b25917;--radius:12px;--space:clamp(20px,4vw,64px);color-scheme:light}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.65 Qiming,'Microsoft YaHei',sans-serif;-webkit-font-smoothing:antialiased}body,button,a{touch-action:manipulation}button,a{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer;color:inherit}button:disabled{cursor:not-allowed}button,summary{min-height:44px}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--focus);outline-offset:5px}::selection{background:var(--gold);color:#163a2c}body{caret-color:var(--green)}::-webkit-scrollbar{width:9px}::-webkit-scrollbar-thumb{background:#a5b4a6;border-radius:5px}img{display:block;max-width:100%;height:auto}svg{width:26px;height:26px;flex-shrink:0}h1,h2,h3,p{margin:0}h1,h2,h3{text-wrap:balance}button{background:none;border:0}.wrap{width:min(1160px,calc(100% - var(--space)*2));margin-inline:auto}.site-header{height:88px;display:flex;align-items:center;gap:30px}.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}.brand img{width:44px;height:40px}.brand strong{display:block;font:700 27px/1.2 QimingSerif,QimingSerif,'Songti SC',SimSun,serif;letter-spacing:.04em}.brand small{font-size:12px;color:var(--muted);display:block;margin-top:5px}.desktop-nav{display:flex;gap:26px;align-items:center;margin-left:auto}.desktop-nav a{display:flex;align-items:center;min-height:44px;font-size:14px;font-weight:600}.desktop-nav a:hover{color:var(--green);text-decoration:underline;text-underline-offset:7px}.theme{display:grid;place-items:center;min-width:44px;height:44px;border-radius:50%;background:var(--quiet)}.theme:hover{background:var(--gold)}.skip{position:fixed;top:-100px;left:20px;z-index:100;background:var(--green);color:white;padding:12px}.skip:focus{top:12px}
.hero{margin-top:24px}.intro h1{font:600 clamp(36px,4.2vw,60px)/1.22 QimingSerif,QimingSerif,'Songti SC',SimSun,serif;letter-spacing:-.025em;max-width:9em}.intro .description{color:var(--muted);font-size:17px;max-width:26em;margin-top:24px}.primary{display:inline-flex;justify-content:center;align-items:center;min-height:50px;padding:12px 26px;background:var(--green);color:#fff;font-weight:650;font-size:16px;border-radius:8px;transition:transform .2s,background .2s}.primary:hover{background:#17462f;transform:translateY(-2px)}.primary:active{transform:translateY(1px)}.intro .primary{margin-top:26px}.learning-order{font-size:14px;color:var(--muted);margin-top:16px}.sample-books{display:flex;gap:10px;align-items:end;margin-top:26px}.sample-books img{width:70px;height:94px;object-fit:cover;object-position:top;border-radius:4px}.sample-books span{font-size:12px;max-width:7em;color:var(--muted);padding-left:5px}.guide-carousel{position:relative;min-width:0}.guide-stage{position:relative;overflow:hidden;border-radius:var(--radius);background:#dce5d2}.guide-slide[hidden]{display:none}.guide-slide{position:relative;min-width:0}.guide-slide>img{width:100%;height:100%;object-fit:cover}.guide-slide-copy{position:absolute;left:28px;bottom:28px;right:28px;display:flex;align-items:center;justify-content:space-between;gap:16px;color:#fff}.guide-slide-copy:before{content:'';position:absolute;inset:-34px -28px -28px;z-index:0;background:linear-gradient(transparent,rgba(7,32,20,.82));pointer-events:none}.guide-slide-copy>*{position:relative}.guide-slide-copy h2{font-size:28px;line-height:1.3;font-weight:600}.guide-slide-copy p{font-size:14px;margin-top:5px}.guide-slide-copy>a{display:flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;background:var(--surface);color:var(--ink);border-radius:50%}.guide-slide-copy>a:hover{background:var(--gold)}.guide-controls{display:flex;align-items:center;justify-content:space-between;min-height:50px;gap:6px}.guide-dots{display:flex;gap:4px}.guide-dots button{font-size:13px;padding:0 10px;min-width:44px;position:relative;color:var(--muted)}.guide-dots button[aria-current=true]{color:var(--ink);font-weight:700}.guide-dots button[aria-current=true]:after{content:'';position:absolute;bottom:5px;left:10px;right:10px;height:3px;background:var(--green)}.guide-control-actions{display:flex;gap:2px}.guide-control-actions button{width:44px;height:44px;display:grid;place-items:center}.guide-control-actions svg{width:20px;height:20px}.guide-control-actions button:hover{background:var(--quiet);border-radius:50%}
.destinations{margin-top:38px}.section-heading{font-size:20px;line-height:1.4;font-weight:650;margin-bottom:16px}.destination{display:flex;align-items:center;gap:20px;min-height:80px;padding:14px 24px;background:var(--surface);transition:background .2s,transform .2s}.destination+.destination{margin-top:5px}.destination:hover{background:var(--quiet);transform:translateX(3px)}.destination .row-icon{display:flex;align-items:center;justify-content:center;width:34px;height:34px}.destination .row-copy{display:flex;align-items:baseline;gap:20px;flex:1}.row-copy h3{font-size:21px;min-width:6em;font-weight:600;line-height:1.4}.row-copy p{font-size:14px;color:var(--muted)}.destination .row-end{display:flex;align-items:center;gap:16px;font-size:12px;font-weight:600}.row-end svg{width:20px;height:20px}.destination--word{background:#e4ecdd}.destination--song .row-icon{color:#8c5b13}.destination--book .row-icon{color:#36677c}.destination--animation .row-icon{color:#6c567e}.destination--gift{margin-top:16px!important;background:#eeeccf}.destination--gift:hover{background:#e7e4be}.free-label{color:#475c34}.site-footer{display:flex;justify-content:space-between;align-items:center;gap:20px;padding-block:36px 44px;font-size:13px;color:var(--muted)}.site-footer b{color:var(--ink);font-size:16px;font-weight:600}.site-footer a{display:flex;align-items:center;min-height:44px;text-decoration:underline;text-underline-offset:5px}.bottom-nav{display:none}
.version-a .hero{display:grid;grid-template-columns:.88fr 1.12fr;gap:60px;align-items:center}.version-a .guide-slide>img{height:400px;object-position:46% center}.version-a .destinations{margin-top:36px}.version-a .destination{border-radius:8px}
.version-b{--paper:#f0f3ee;--surface:#fff;--radius:10px}.version-b .site-header{height:80px}.version-b .hero{display:grid;grid-template-columns:1.4fr 1fr;gap:24px}.version-b .intro{grid-column:2;grid-row:1;background:var(--green);padding:34px;color:white;border-radius:10px;display:flex;flex-direction:column;justify-content:center}.version-b .intro h1{font-family:Qiming,'Microsoft YaHei',sans-serif;font-size:36px;line-height:1.3}.version-b .description,.version-b .learning-order,.version-b .sample-books span{color:#e4eee6}.version-b .intro .primary{background:var(--gold);color:#193d30;align-self:start;margin-top:24px}.version-b .sample-books{margin-top:20px}.version-b .sample-books img{width:48px;height:65px}.version-b .sample-books span{font-size:12px}.version-b .guide-carousel{grid-column:1;grid-row:1}.version-b .guide-stage{height:calc(100% - 50px)}.version-b .guide-slide>img{height:388px;object-position:center}.version-b .destination{min-height:70px}.version-b .destinations{margin-top:24px}.version-b .row-copy h3{font-size:19px}.version-b .section-heading{font-size:20px}
.version-c{--paper:#e9efdf;--surface:#f8f8eb;--ink:#153f30;--muted:#425f4f;--radius:16px}.version-c .site-header{height:84px}.version-c .hero{background:var(--green);color:#fff;display:grid;grid-template-columns:1fr 1.05fr;gap:0;border-radius:18px;overflow:hidden}.version-c .intro{padding:44px}.version-c .intro h1{font-size:48px}.version-c .description,.version-c .learning-order,.version-c .sample-books span{color:#e0ecdd}.version-c .intro .primary{background:var(--gold);color:#163d2d}.version-c .sample-books img{width:54px;height:72px}.version-c .guide-carousel{background:var(--green)}.version-c .guide-stage{border-radius:0}.version-c .guide-slide>img{height:100%;min-height:425px;max-height:490px;object-position:center}.version-c .guide-controls{background:var(--green);padding-inline:16px}.version-c .guide-dots button{color:#dbe8dc}.version-c .guide-dots button[aria-current=true]{color:#fff}.version-c .guide-dots button[aria-current=true]:after{background:var(--gold)}.version-c .guide-control-actions button:hover{background:#397353}.version-c .destination{min-height:78px;background:transparent;padding-inline:12px}.version-c .destination+.destination{margin-top:0}.version-c .destination:hover{background:#dbe5d0}.version-c .destination--word{background:#d7e3c6;border-radius:10px}.version-c .destination--gift{background:var(--gold);padding-inline:24px;border-radius:10px}.version-c .section-heading{font-size:24px}.version-c .row-icon{width:48px}.version-c .row-copy h3{font-size:22px}
.center-content{max-width:920px}.center-heading{margin-top:38px}.center-heading h1{font:600 40px/1.3 QimingSerif,'Songti SC',SimSun,serif}.center-heading p{margin-top:12px;color:var(--muted)}.center-summary{display:flex;gap:60px;padding:28px 0}.center-summary strong{font-size:40px;line-height:1.1;display:block;font-weight:650;font-variant-numeric:tabular-nums}.center-summary span{font-size:14px;color:var(--muted)}.center-today{display:flex;justify-content:space-between;gap:24px;align-items:center;padding:28px;background:var(--quiet);border-radius:12px}.center-today h2,.center-test h2{font-size:24px}.center-today p{font-size:15px;color:var(--muted);margin-top:8px}.center-test{margin-top:30px}.center-test>p{margin-block:10px 16px;color:var(--muted)}.center-test .primary:disabled{background:#dee5da;color:#536355}.empty-note{font-size:14px;margin-top:10px!important}.center-buckets{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px}.center-buckets details{padding:16px 20px;background:var(--surface);border-radius:10px}.center-buckets summary{display:flex;align-items:center;justify-content:space-between;cursor:pointer;font-weight:600;gap:14px}.center-buckets summary strong{font-size:22px;font-variant-numeric:tabular-nums}.center-buckets p{font-size:14px;color:var(--muted);margin-top:8px}.help-links{margin-top:28px}.help-links a,.help-links summary{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:56px;font-size:16px}.help-links details p{font-size:14px;color:var(--muted);padding:8px 0 18px}.preview-note{font-size:13px;color:var(--muted);padding-block:20px}.center-content .site-footer{padding-top:18px}
html[data-theme=dark]{--paper:#14271f;--surface:#20392d;--ink:#edf1e5;--muted:#c0d1c2;--quiet:#2b4737;--green:#326d4d;--gold:#efd682;color-scheme:dark}html[data-theme=dark] .destination--word{background:#294b35}html[data-theme=dark] .destination--gift{background:#3d432c}html[data-theme=dark] .row-icon{color:#d8ddae}html[data-theme=dark] .free-label{color:#e6eac8}html[data-theme=dark] .theme:hover{color:#193d30}html[data-theme=dark] .version-c .destination:hover{background:#2b4737}html[data-theme=dark] .version-c .hero,html[data-theme=dark] .version-c .guide-carousel,html[data-theme=dark] .version-c .guide-controls{background:#22513b}html[data-theme=dark] .version-c .destination--word{background:#2b4737}html[data-theme=dark] .version-c .destination--gift{background:#3d432c}
@media(min-width:900px){.version-b .intro{min-height:438px}}
@media(max-width:1050px){.desktop-nav{gap:16px}.site-header{gap:16px}.brand strong{font-size:24px}.brand small{max-width:14em}.version-a .hero{gap:32px}.intro h1{font-size:44px}.version-c .intro{padding:30px}.version-c .intro h1{font-size:40px}.row-copy p{max-width:30em}.version-b .intro{padding:26px}.version-b .intro h1{font-size:32px}}
@media(max-width:800px){:root{--space:24px}.desktop-nav{display:none}.theme{margin-left:auto}.site-header{height:76px}.brand img{width:38px;height:36px}.brand strong{font-size:24px}.brand small{font-size:12px}.hero{margin-top:20px}.version-a .hero{gap:24px;grid-template-columns:1fr 1.08fr}.intro h1{font-size:36px}.intro .description{font-size:16px;margin-top:16px}.intro .primary{padding:12px 20px}.sample-books img{width:52px;height:70px}.sample-books{gap:8px;margin-top:20px}.version-a .guide-slide>img{height:350px}.guide-slide-copy{left:20px;bottom:22px;right:20px}.guide-slide-copy h2{font-size:25px}.guide-slide-copy p{font-size:13px}.guide-controls{gap:0}.guide-dots{gap:0}.guide-dots button{font-size:12px;padding:0 8px}.guide-dots button[aria-current=true]:after{left:8px;right:8px}.guide-control-actions button{width:40px;min-width:40px}.version-b .hero{grid-template-columns:1.2fr 1fr;gap:18px}.version-b .intro h1{font-size:29px}.version-b .intro{padding:24px}.version-b .sample-books{display:none}.version-b .guide-slide>img{height:350px}.version-c .intro{padding:28px}.version-c .intro h1{font-size:36px}.version-c .guide-slide>img{min-height:390px}.version-c .sample-books{display:none}.destination{min-height:72px;padding:12px 18px;gap:14px}.destination .row-copy{gap:12px}.row-copy h3{font-size:19px}.row-copy p{font-size:13px}.site-footer{padding-bottom:110px}.bottom-nav{display:flex;position:fixed;inset:auto 0 0;background:var(--surface);z-index:50;justify-content:space-around;padding:6px 10px max(6px,env(safe-area-inset-bottom));gap:2px}.bottom-nav a{display:flex;flex:1;align-items:center;flex-direction:column;justify-content:center;gap:2px;min-height:54px;font-size:12px;color:var(--muted)}.bottom-nav svg{width:23px;height:23px}.bottom-nav a:hover{color:var(--green);background:var(--quiet);border-radius:8px}}
@media(max-width:600px){:root{--space:20px}.site-header{height:72px;gap:10px}.brand{gap:10px}.brand strong{font-size:23px}.brand small{margin-top:3px;font-size:12px}.brand img{width:36px;height:34px}.hero{margin-top:16px}.version-a .hero{display:flex;flex-direction:column;gap:22px;align-items:stretch}.intro h1{font-size:35px;max-width:none;line-height:1.3}.intro .description{font-size:15px;max-width:24em;margin-top:14px}.intro .primary{display:flex;margin-top:20px;min-height:50px}.learning-order{font-size:13px;margin-top:10px}.version-a .sample-books{display:none}.version-a .guide-slide>img{height:214px;object-position:45% 47%}.guide-slide-copy{left:18px;bottom:18px;right:18px}.guide-slide-copy h2{font-size:25px}.guide-slide-copy p{font-size:13px;margin-top:3px}.guide-slide-copy>a{min-width:44px;min-height:44px}.guide-slide-copy>a svg{width:20px;height:20px}.guide-controls{min-height:48px}.guide-dots button{font-size:12px;min-width:44px;padding:0 7px}.guide-control-actions button{width:44px;min-width:44px}.guide-dots button[aria-current=true]:after{left:7px;right:7px}.version-a .destinations,.destinations{margin-top:24px}.section-heading{font-size:19px;margin-bottom:12px}.destination{min-height:66px;padding:10px 14px;gap:12px}.destination .row-icon{width:28px}.destination .row-copy{display:block}.row-copy h3{font-size:18px;min-width:0}.row-copy p{font-size:12px;line-height:1.55;margin-top:2px}.destination .row-end{gap:0}.row-end svg{width:19px;height:19px}.row-end .free-label{display:none}.destination--gift{margin-top:12px!important}.site-footer{display:block;padding-top:28px;font-size:12px}.site-footer a{margin-top:8px}.version-b .hero{display:flex;flex-direction:column;gap:20px}.version-b .intro{padding:24px;min-height:0;order:-1}.version-b .intro h1{font-size:30px}.version-b .description{margin-top:12px;font-size:14px}.version-b .learning-order{margin-top:10px}.version-b .intro .primary{margin-top:18px;align-self:stretch}.version-b .guide-slide>img{height:190px}.version-b .guide-stage{height:auto}.version-b .destinations{margin-top:20px}.version-b .destination{min-height:62px;background:var(--surface);padding:10px 14px}.version-b .destination--word{background:#e4ecdd}.version-b .destination--gift{background:#eeeccf}.version-b .row-copy h3{font-size:17px}.version-c .hero{display:flex;flex-direction:column;border-radius:14px}.version-c .intro{padding:26px 24px 20px}.version-c .intro h1{font-size:36px}.version-c .description{font-size:15px}.version-c .intro .primary{margin-top:18px}.version-c .guide-slide>img{height:208px;min-height:208px;object-position:center 48%}.version-c .guide-controls{padding-inline:10px}.version-c .destination{min-height:68px;padding:10px 12px}.version-c .row-icon{width:34px}.version-c .row-copy h3{font-size:19px}.version-c .section-heading{font-size:21px}.version-c .destinations{margin-top:24px}.version-c .destination--gift{padding-inline:16px}.center-heading{margin-top:24px}.center-heading h1{font-size:32px}.center-heading p{font-size:15px}.center-summary{padding:24px 0;gap:60px}.center-summary strong{font-size:36px}.center-today{display:block;padding:22px}.center-today .primary{display:flex;margin-top:18px}.center-today h2,.center-test h2{font-size:22px}.center-test{margin-top:28px}.center-buckets{gap:10px}.center-buckets details{padding:10px 14px}.center-buckets summary{font-size:15px}.center-buckets p{font-size:13px}.center-test>p{font-size:15px}}
@media(max-width:360px){:root{--space:16px}.brand small{font-size:11px}.brand strong{font-size:21px}.intro h1{font-size:31px}.version-c .intro h1{font-size:31px}.guide-control-actions button{width:40px;min-width:40px}.guide-dots button{font-size:12px;padding:0 5px}.guide-slide-copy p{max-width:15em}.guide-slide-copy h2{font-size:23px}.version-b .intro h1{font-size:27px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

.brand small,.sample-books span,.guide-dots button,.row-end,.row-copy p,.site-footer{font-size:13px}
.guide-slide-copy{left:0;right:0;bottom:0;padding:14px 22px;background:#174530;color:#fff}
.guide-slide-copy:before{display:none}
.guide-slide-copy p{color:#eef4e9}
.version-c .hero{display:block}
.version-c .intro{display:grid;grid-template-columns:1fr auto;gap:10px 32px;padding:32px 40px;align-items:center}
.version-c .intro h1{grid-column:1;font-size:42px;max-width:none}
.version-c .intro h1 br{display:none}
.version-c .intro .description{grid-column:1;margin:0;max-width:none}
.version-c .intro .primary{grid-column:2;grid-row:1 / 3;margin:0;align-self:center}
.version-c .intro .learning-order{grid-column:2;margin:0;font-size:13px;text-align:center}
.version-c .intro .sample-books{display:none}
.version-c .guide-slide>img{height:330px;min-height:0;max-height:none;object-position:center 48%}
.version-c .guide-controls{min-height:50px}
@media(max-width:1050px){.version-c .intro{padding:28px}.version-c .intro h1{font-size:36px}.version-c .intro .description{font-size:15px}.version-c .intro .primary{padding-inline:18px}}
@media(max-width:800px){.guide-control-actions button{width:44px;min-width:44px}.version-c .intro{grid-template-columns:1fr;gap:12px;padding:28px}.version-c .intro .primary{grid-column:1;grid-row:auto;justify-self:start;min-width:230px}.version-c .intro .learning-order{grid-column:1;text-align:left}.version-c .guide-slide>img{height:290px}}
@media(max-width:600px){.intro .description,.version-b .description,.version-c .intro .description{font-size:16px}.brand small,.guide-dots button,.row-copy p,.site-footer,.bottom-nav a{font-size:13px}.brand small{max-width:13em}.version-c .intro{display:block;padding:26px 24px 20px}.version-c .intro h1{font-size:34px;max-width:9em}.version-c .intro h1 br{display:block}.version-c .intro .description{margin-top:14px}.version-c .intro .primary{margin-top:18px;display:flex;min-width:0}.version-c .intro .learning-order{margin-top:10px}.version-c .guide-slide>img{height:208px}}
@media(max-width:360px){.brand small{font-size:13px}.guide-controls{flex-wrap:wrap;justify-content:center}.guide-dots{width:100%;justify-content:center}.guide-control-actions button{width:44px;min-width:44px}.version-c .intro h1{font-size:31px}}
@media(max-width:600px){.version-c .guide-controls{flex-direction:column;padding-inline:12px}.version-c .guide-dots{width:100%;justify-content:center}.version-c .guide-dots button{white-space:nowrap}.version-c .guide-control-actions{align-self:flex-end}}

.qm-header .qm-header-inner{width:min(1160px,calc(100% - var(--space)*2))}
.guide-controls output[hidden]{display:none}
.guide-home .guide-stage{touch-action:pan-y}
.qm-mobile-nav{position:fixed;inset:auto 0 0;z-index:50;justify-content:space-around}
.qm-mobile-nav a{display:flex;flex:1;align-items:center;flex-direction:column;justify-content:center;text-decoration:none}
.qm-mobile-nav .qm-icon{width:23px;height:23px}
.qm-brand span{display:block}.qm-brand strong{font-family:QimingSerif,SimSun,serif}
.version-a .primary{background:var(--edition-action);color:#fffef9}
.version-a .primary:hover{background:#17462f}
@media(max-width:800px){body.version-a{padding-bottom:0}}

/* Keep the real product visible without adding another homepage section. */
.version-a .sample-books>a{display:block;flex:none;border-radius:4px;line-height:0}
.version-a .sample-books>a img{display:block}
.version-a .sample-books span{font-size:13px;line-height:1.6}
@media(max-width:600px){.version-a .sample-books{display:flex;gap:9px;margin-top:18px;align-items:center}.version-a .sample-books img{width:44px;height:59px}.version-a .sample-books span{padding-left:6px;max-width:none}}

.destination--spoken{background:#f1e5d5}.destination--spoken .row-icon{color:#83502b}
html[data-theme=dark] .destination--spoken{background:#3f3c2e}html[data-theme=dark] .destination--spoken .row-icon{color:#e0c08d}
