@import url("tmr-tokens.css?v=1");
:root{--ink:var(--tmr-ink,#0c193b);--muted:var(--tmr-muted,#617797);--green:var(--tmr-green,#27875b);--line:var(--tmr-line,#e7edf0);--pink:var(--tmr-pink,#fff0f5);--peach:var(--tmr-peach,#fff2e8);--yellow:var(--tmr-yellow,#fff9e1);--mint:var(--tmr-mint,#eaf9f1);--aqua:var(--tmr-aqua,#e6f8fa);--blue:var(--tmr-blue,#eaf5ff);--lavender:var(--tmr-lavender,#f2edff);font-family:var(--tmr-font-ui,"Avenir Next",Avenir,"Segoe UI",Arial,"PingFang SC","Microsoft YaHei",sans-serif);color:var(--ink);background:var(--tmr-page,#fff);font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,input,textarea{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline}button:disabled{cursor:default}svg{display:block}button svg,.circle svg,.feature-icon svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}button{color:inherit}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,[tabindex]:focus-visible{outline:3px solid #216daf;outline-offset:4px}.site-header{min-height:100px;padding:10px max(3.6vw,20px);background:#fff;display:flex;align-items:center;justify-content:space-between;gap:26px;box-shadow:0 3px 14px #14223908;position:relative;z-index:2}.brand{display:flex;align-items:center;gap:20px;flex-shrink:0}.brand:hover{text-decoration:none}.brand strong{display:block;font-size:clamp(22px,1.8vw,30px);font-weight:650;letter-spacing:-.8px}.brand small{display:block;font-size:15px;color:var(--muted);margin-top:4px}.site-header nav{display:flex;align-items:center;gap:clamp(16px,2vw,36px);align-self:stretch}.site-header nav a{display:flex;align-items:center;font-size:15px;white-space:nowrap;position:relative}.site-header nav a[aria-current=page]{font-weight:650}.site-header nav a[aria-current=page]:after{content:"";position:absolute;height:3px;border-radius:4px;background:var(--green);bottom:9px;left:-5px;right:-5px}.header-actions{display:flex;align-items:center;gap:20px}.circle{display:inline-flex;justify-content:center;align-items:center;width:46px;height:46px;min-width:46px;border:0;border-radius:50%;background:#fff;box-shadow:0 3px 7px #14223906;font-size:23px}.search-button{background:#f4f5f7}.admin-button{border:0;border-radius:40px;background:#e2f0e9;display:flex;align-items:center;gap:12px;padding:13px 24px;font-size:15px}.admin-button svg{color:#138452;width:21px;height:21px}main{max-width:1600px;margin:auto;padding:26px 2.8vw 36px;min-height:calc(100vh - 180px)}h1,h2,h3,p{margin:0}h1{font-size:40px;line-height:1.17;letter-spacing:-1px}h2{font-size:25px;letter-spacing:-.45px;line-height:1.2}h3{font-size:20px;letter-spacing:-.35px;line-height:1.25}p{line-height:1.5}.muted,.subtitle{color:var(--muted)}.subtitle{font-size:18px;margin-top:8px}.site-footer{border-top:1px solid #eef1ef;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;padding:22px 3.6vw;font-size:13px;color:#526c7e;max-width:1600px;margin:auto}.site-footer>span:last-child{display:flex;gap:7px;align-items:center;flex-wrap:wrap}.text-button{padding:0;border:0;background:none;color:inherit;text-decoration:underline}.pink{background:var(--pink)}.peach{background:var(--peach)}.yellow{background:var(--yellow)}.green{background:var(--mint)}.aqua{background:var(--aqua)}.blue{background:var(--blue)}.lavender{background:var(--lavender)}.banner{border-radius:16px;padding:28px 30px;margin-bottom:20px;display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:132px}.banner-art{width:34%;max-width:480px;max-height:135px}.clip-art{display:block;overflow:hidden;flex-shrink:0}.clip-art image{pointer-events:none}.home-grid{display:grid;grid-template-columns:1.08fr 1fr 1.08fr;gap:24px}.feature{padding:20px 17px 17px;border-radius:13px;display:flex;flex-direction:column;min-width:0}.feature-heading{display:flex;align-items:flex-start;gap:20px;min-height:106px}.feature-heading>div:nth-child(2){padding-top:9px;flex:1}.feature-heading p{margin-top:5px;font-size:15px;color:var(--muted);line-height:1.4}.feature-heading>.circle{width:42px;height:42px;min-width:42px;margin-top:6px}.feature-icon{display:flex;align-items:center;justify-content:center;width:65px;height:65px;min-width:65px;border-radius:15px}.feature-icon svg{width:39px;height:39px}.vocabulary-icon{color:#07975f;background:#d8f0e4}.unit-icon{color:#f26972;background:#ffe0e3}.activities-icon{color:#168af5;background:#d8edff}.feature-body{background:#ffffffa6;border-radius:13px;padding:9px;flex:1;min-height:305px}.feature-action{display:flex;justify-content:center;align-items:center;gap:16px;border:0;border-radius:10px;color:#fff;font-size:17px;font-weight:550;min-height:53px;margin:22px 5px 0;text-align:center;padding:12px}.feature-action:hover{filter:brightness(.96);text-decoration:none}.vocabulary-action{background:#398b68}.units-action{background:#d94c57}.activities-action{background:#337cbb}.word-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.word-card{background:#fff;border-radius:11px;overflow:hidden;box-shadow:0 2px 5px #1722380b;min-width:0;position:relative}.word-image{height:104px;background:#f6f7f8;display:flex;align-items:center;justify-content:center}.word-image img{width:100%;height:100%;object-fit:contain}.word-image .missing{font-family:serif;font-size:38px;color:#82978c}.word-content{padding:7px 8px 9px}.word-content strong{font-family:"PingFang SC","Microsoft YaHei",sans-serif;font-size:21px;font-weight:550;display:block;line-height:1.3;overflow-wrap:anywhere}.word-content .pinyin{color:var(--muted);font-size:14px;display:block;min-height:20px;overflow-wrap:anywhere}.audio-buttons{display:flex;gap:4px;flex-wrap:wrap;margin-top:7px}.audio-button{border:0;border-radius:6px;background:#eef5fc;color:#1468ad;padding:5px;font-size:11px;line-height:1.2;min-height:30px;flex:1}.audio-button:disabled{background:#f4f5f6;color:#6e7886}.teacher-audio{width:100%;height:30px}.audio-status{color:#506980;font-size:12px;margin:9px 4px 0;min-height:18px}.unit-browser{display:grid;grid-template-columns:80px minmax(0,1fr);gap:10px}.year-tabs{display:flex;flex-direction:column;gap:4px}.year-tabs button{background:transparent;border:0;text-align:left;color:var(--muted);padding:12px 10px;border-left:3px solid transparent;border-radius:5px;font-size:13px;min-height:42px}.year-tabs button[aria-pressed=true]{color:var(--ink);border-left-color:#f76c75;background:#fff0f0}.unit-list{display:flex;flex-direction:column;gap:12px;padding-top:5px}.unit-preview{display:flex;align-items:center;gap:12px;border:0;background:#fff;padding:10px;text-align:left;width:100%;box-shadow:0 2px 5px #17223808;border-radius:11px}.unit-preview .unit-thumb{display:flex;align-items:center;justify-content:center;min-width:55px;height:55px;background:#e5f4ff;border-radius:10px;font-size:33px}.unit-preview strong{display:block;font-size:15px}.unit-preview small{display:block;color:var(--muted);margin-top:4px;font-size:12px}.unit-preview .arrow{margin-left:auto}.unit-hint{font-size:12px;color:#667991;margin-top:12px;line-height:1.5}.activity-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.activity-card{border-radius:12px;padding:16px 16px 12px;display:flex;flex-direction:column;align-items:flex-start;min-height:167px}.activity-card svg{width:37px;height:37px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.activity-card h3{font-size:18px;margin-top:10px}.activity-card p{font-size:13px;color:var(--muted);line-height:1.35;margin:5px 0 10px}.activity-card .circle{height:31px;width:31px;min-width:31px;font-size:19px;margin-top:auto}.activity-card .symbol{color:#cc8100}.activity-card.lavender .symbol{color:#9b66e0}.activity-card.blue .symbol{color:#168af5}.activity-card.green .symbol{color:#078b59}.badge{display:inline-block;background:#fff9;border:1px solid #ffffffb0;color:#607083;border-radius:7px;font-size:11px;padding:4px 7px}.back-link{display:inline-block;font-size:14px;color:var(--muted);margin:0 0 16px}.page-intro{margin:0 10px 24px}.page-intro h1{font-size:29px}.year-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:13px;margin:18px 10px 28px}.year-card{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:28px 22px;border-radius:12px;font-size:25px;font-weight:650;white-space:nowrap}.year-card .circle{width:35px;height:35px;min-width:35px;font-size:22px;color:inherit}.year-card:hover{text-decoration:none;box-shadow:0 4px 12px #1722380b}.year-card[aria-current=true]{outline:2px solid currentColor;outline-offset:3px}.year-0{background:#ffe8f0;color:#c32f68}.year-1{background:#fff0e3;color:#b65500}.year-2{background:#fff8d9;color:#946500}.year-3{background:#e5f6ed;color:#168449}.year-4{background:#dff7f9;color:#087d8c}.year-5{background:#e5f0ff;color:#0868d3}.year-6{background:#efe8ff;color:#7b42d0}.year-badge{display:inline-block;border-radius:10px;font-size:12px;padding:7px 9px;white-space:nowrap;font-weight:550}.topic-search{border:0;background:#fff;border-radius:35px;padding:15px 20px;display:flex;align-items:center;gap:14px;width:min(440px,42%);box-shadow:0 2px 5px #17223805}.topic-search svg{width:20px;height:20px;stroke:var(--ink);fill:none;stroke-width:2;flex-shrink:0}.topic-search input{border:0;background:none;min-width:0;width:100%;outline-offset:7px;color:var(--ink);font-size:14px}.topic-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px}.topic-card{border-radius:15px;padding:19px 15px 16px;position:relative;display:flex;flex-direction:column;min-width:0}.topic-top{display:flex;gap:10px;min-height:153px}.topic-top .clip-art{width:43%;max-width:135px;height:140px;align-self:center}.topic-copy{padding-top:6px;min-width:0;flex:1}.topic-copy h2{font-size:21px;padding-right:23px}.chinese-title{font-family:KaiTi,STKaiti,"Songti SC",serif;font-size:28px;margin:4px 0;color:var(--ink)}.topic-copy p{font-size:14px;color:var(--muted);line-height:1.5}.topic-card>.circle{position:absolute;top:16px;right:15px;width:37px;height:37px;min-width:37px;font-size:22px}.year-tags{display:flex;flex-wrap:wrap;gap:5px;margin-top:13px;min-height:34px;align-items:center}.year-tags .muted{font-size:12px}.no-results,.empty-state{padding:24px;color:var(--muted);line-height:1.6}.no-results{grid-column:1/-1}.data-note{font-size:12px;color:#66788a;margin:14px 3px}.learning-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:14px}.learning-card{border:0;border-radius:16px;padding:15px 21px 20px;display:flex;flex-direction:column;position:relative;min-height:225px}.learning-card .clip-art{width:100%;height:104px;margin-bottom:10px}.learning-card h2{font-size:18px;margin-bottom:7px}.learning-card p{font-size:14px;color:var(--muted);line-height:1.4;padding-right:20px}.learning-card .badge{align-self:flex-start;margin-top:16px}.learning-card .circle{position:absolute;right:13px;bottom:14px;width:35px;height:35px;min-width:35px;font-size:20px}.learning-banner{padding-left:44px}.learning-banner h1{font-size:44px}.learning-banner p{font-size:20px;line-height:1.35;color:var(--muted);margin-top:7px}.resource-area{margin:30px 10px 0}.resource-area>h2{margin-bottom:8px}.resource-area>p{margin-bottom:18px}.resource-columns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.resource-panel{padding:22px;border-radius:15px;background:#f3f8f5;min-width:0}.resource-panel:nth-child(2){background:var(--peach)}.resource-panel:nth-child(3){background:var(--blue)}.resource-panel>h3{margin-bottom:15px}.resource-link{display:block;background:#fff;border-radius:10px;padding:15px;margin-top:10px;box-shadow:0 2px 5px #17223808}.resource-link strong{display:block;font-size:17px;margin:7px 0}.resource-link p{font-size:13px;color:var(--muted)}.resource-link:hover{box-shadow:0 3px 10px #17223812;text-decoration:none}.resource-link .year-badge{font-size:11px}.results-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.topic-detail-year{margin:26px 10px}.topic-detail-year h2{font-size:24px}.topic-detail-year .results-grid{margin-top:12px}.activity-links{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}.button{display:inline-flex;align-items:center;justify-content:center;background:var(--green);border:0;border-radius:9px;color:white;padding:12px 20px;min-height:44px;font-weight:550;font-size:14px}.button.secondary{background:#edf4f0;color:#1f704d}.button:disabled{background:#dce5df;color:#4d6356}.about-intro{display:grid;grid-template-columns:1fr 1fr 1.1fr;align-items:center;padding:28px 32px;border-radius:16px;background:#f0f8ef;gap:30px}.about-intro h1{font-size:43px}.about-intro h2{font-size:25px;color:var(--muted);margin:7px 0 16px}.about-intro p{font-size:16px;color:var(--muted);line-height:1.6}.about-intro .about-chinese{border-left:1px solid #dce9dc;padding-left:32px}.about-chinese h2{font-family:KaiTi,STKaiti,"Songti SC",serif;font-size:31px;color:var(--ink)}.about-chinese p{font-family:"Songti SC",serif;color:var(--ink);font-size:18px;line-height:1.7}.about-intro .clip-art{width:100%;height:235px}.about-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:16px}.about-card{border-radius:14px;padding:25px 26px;position:relative;min-height:265px;overflow:hidden}.about-card h2{font-size:22px;margin-bottom:6px}.about-card h3{font-family:KaiTi,STKaiti,"Songti SC",serif;font-size:22px;margin-bottom:20px}.about-card p{color:var(--muted);max-width:73%;font-size:15px;position:relative;z-index:1}.about-card p[lang]{font-family:"Songti SC",serif;color:#344765;margin-top:18px;line-height:1.6}.about-card .clip-art{width:125px;height:160px;position:absolute;bottom:12px;right:4px;opacity:.9}.about-card .card-title{display:flex;gap:16px;align-items:flex-start}.about-card .card-title>span{font-size:30px;width:49px;flex-shrink:0}.contact{margin-top:16px;background:#edf9f2;padding:18px 20px;border-radius:16px;display:grid;grid-template-columns:.8fr 1.2fr;gap:24px}.contact-copy{padding:16px;position:relative}.contact h2{font-size:27px}.contact h3{font-family:KaiTi,STKaiti,"Songti SC",serif;font-size:26px;margin:6px 0 20px}.contact-copy p{font-size:17px;color:var(--muted);max-width:310px}.contact-copy .clip-art{width:155px;height:150px;float:right;margin-top:8px}.contact-copy .badge{margin-top:16px}.contact-form{background:#fff;padding:22px;border-radius:14px}.contact-form fieldset{margin:0;padding:0;border:0;min-width:0}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:15px}.contact-form label{font-size:13px;display:block;margin-bottom:14px}.contact-form input,.contact-form textarea{display:block;width:100%;border:1px solid #dde3ed;border-radius:8px;padding:11px 12px;background:#fcfdff;margin-top:6px;color:#6b7892}.contact-form textarea{resize:vertical;min-height:91px}.contact-form .data-note{margin:0 0 12px}.contact-form button{margin-top:6px}.loading{color:var(--muted);padding:30px}.modal-backdrop{position:fixed;inset:0;background:#0b193965;z-index:30;display:flex;align-items:center;justify-content:center;padding:24px}.modal-backdrop[hidden]{display:none}.modal{background:#fff;border-radius:20px;max-width:650px;width:100%;max-height:85vh;overflow:auto;padding:36px;position:relative;box-shadow:0 20px 70px #0a193a30}.modal h2{font-size:28px;margin-bottom:15px;padding-right:30px}.modal p{color:var(--muted);margin:12px 0}.modal .close{position:absolute;right:12px;top:10px;background:#f5f6f7}.modal .resource-link{border:1px solid var(--line)}.modal .tone-grid{display:flex;flex-wrap:wrap;gap:12px;margin:20px 0}.tone-grid span{background:var(--peach);padding:14px;border-radius:10px;text-align:center;min-width:90px}.tone-grid b{display:block;font-size:30px}.letter-list{font-size:24px!important;letter-spacing:3px;line-height:1.8!important;color:var(--ink)!important}.character-examples{display:flex;gap:12px;flex-wrap:wrap;margin-top:20px}.character-examples span{background:var(--mint);border-radius:12px;padding:16px;text-align:center}.character-examples b{display:block;font-size:40px;font-weight:500}.sr-only,.skip-link:not(:focus){position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link:focus{position:fixed;top:8px;left:8px;z-index:100;background:#fff;padding:12px;border:2px solid var(--green)}[hidden]{display:none!important}.search-summary{margin:18px 3px;color:var(--muted)}.notice{padding:14px 18px;background:#fff6df;border-radius:10px;color:#755c26;font-size:14px;margin:18px 0}.inline-link{text-decoration:underline;text-underline-offset:3px}.header-actions .circle:hover,.admin-button:hover{filter:brightness(.98)}
@media(min-width:1450px){.feature-heading{gap:24px}.word-image{height:115px}.topic-card{padding:20px 16px}.topic-copy h2{font-size:22px}.topic-top{min-height:155px}.feature-body{min-height:330px}.activity-card{min-height:174px}}
@media(max-width:1250px){.site-header{gap:15px;padding:12px 24px;flex-wrap:wrap}.site-header nav{order:3;width:100%;justify-content:center;gap:40px;height:42px}.site-header nav a[aria-current=page]:after{bottom:0}.brand strong{font-size:26px}.brand small{font-size:14px}.home-grid{gap:15px}.feature{padding:16px 12px}.feature-heading{gap:12px;min-height:112px}.feature-icon{width:48px;height:53px;min-width:48px}.feature-icon svg{width:31px;height:31px}.feature-heading h2{font-size:22px}.feature-heading p{font-size:13px}.feature-heading>.circle{width:32px;height:32px;min-width:32px;font-size:20px}.word-grid{gap:7px}.word-image{height:82px}.word-content{padding:7px 5px}.audio-button{font-size:10px;padding:5px 3px}.activity-card{padding:13px 10px;min-height:173px}.activity-card h3{font-size:16px}.unit-browser{grid-template-columns:65px minmax(0,1fr);gap:5px}.unit-preview{padding:8px;gap:8px}.unit-preview .unit-thumb{min-width:35px;height:42px;font-size:25px}.unit-preview strong{font-size:14px}.year-tabs button{padding-left:5px}.topic-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.year-card{font-size:21px;padding:24px 15px}.year-card .circle{width:30px;height:30px;min-width:30px}.learning-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.learning-card .clip-art{height:120px}.about-intro{grid-template-columns:1fr 1fr;padding:25px}.about-intro>.clip-art{display:none}.about-card p{max-width:100%}.about-card .clip-art{opacity:.22}.about-card h2{font-size:20px}.about-card .card-title{gap:10px}.about-card .card-title>span{width:28px;font-size:24px}}
@media(max-width:1000px){.home-grid{grid-template-columns:1fr 1fr}.feature:last-child{grid-column:1/-1}.feature:last-child .feature-heading{min-height:90px}.activity-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.feature:last-child .feature-body{min-height:0}.word-image{height:105px}.word-content strong{font-size:22px}.feature-heading p{font-size:15px}.feature-heading h2{font-size:25px}.feature-icon{width:60px;min-width:60px;height:60px}.unit-browser{grid-template-columns:80px minmax(0,1fr)}.year-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.topic-top{flex-direction:column;min-height:265px}.topic-top .clip-art{width:120px;height:120px;margin:0 auto}.topic-copy{padding-top:0}.topic-copy h2{font-size:22px}.topic-copy p{font-size:15px}.topic-card>.circle{top:15px;right:13px}.topic-search{width:40%}.banner h1{font-size:32px}.subtitle{font-size:16px}.resource-columns{grid-template-columns:1fr 1fr}.resource-panel:last-child{grid-column:1/-1}.results-grid{grid-template-columns:1fr 1fr}.about-grid{gap:12px}.about-card{padding:20px}.contact{grid-template-columns:1fr 1.3fr}.contact-copy p{font-size:16px}}
@media(max-width:700px){.site-header{padding:12px 18px;gap:14px}.brand{gap:12px}.brand strong{font-size:21px;letter-spacing:-.6px}.brand small{font-size:11px}.header-actions{gap:9px}.header-actions .circle{width:37px;height:37px;min-width:37px}.header-actions .circle svg{width:20px;height:20px}.admin-button{padding:10px 13px;font-size:13px;gap:6px}.admin-button svg{width:18px;height:18px}.site-header nav{justify-content:space-between;gap:13px;overflow-x:auto;height:38px}.site-header nav a{font-size:13px;flex-shrink:0}main{padding:20px 16px 28px}.home-grid{grid-template-columns:1fr;gap:18px}.feature:last-child{grid-column:auto}.feature{padding:17px 14px}.feature-heading{min-height:100px}.feature-heading>.circle{width:37px;height:37px;min-width:37px}.feature-heading h2{font-size:25px}.feature-heading p{font-size:14px}.word-image{height:115px}.word-content{padding:9px}.audio-buttons{gap:5px}.audio-button{font-size:11px;min-height:33px}.activity-grid{grid-template-columns:1fr 1fr}.activity-card{padding:17px 15px;min-height:170px}.activity-card h3{font-size:19px}.activity-card p{font-size:14px}.unit-browser{grid-template-columns:80px minmax(0,1fr)}.unit-list{gap:10px}.unit-preview .unit-thumb{min-width:52px;height:52px;font-size:30px}.unit-preview strong{font-size:16px}.unit-preview small{font-size:13px}.feature-action{margin-top:16px}.banner{padding:23px 22px;display:block}.banner h1{font-size:31px}.topic-search{width:100%;margin-top:20px;padding:14px 18px}.topic-grid{grid-template-columns:1fr 1fr;gap:12px}.topic-card{padding:14px 12px}.topic-top{min-height:260px;gap:4px}.topic-top .clip-art{width:115px;height:125px}.topic-copy h2{font-size:19px;padding-right:0}.topic-copy p{font-size:13px}.chinese-title{font-size:24px}.topic-card>.circle{width:30px;height:30px;min-width:30px;right:10px;top:10px;font-size:19px}.year-tags{gap:4px}.year-badge{font-size:10px;padding:6px 7px}.page-intro{margin:0 0 20px}.page-intro h1{font-size:28px}.year-grid{margin:10px 0 24px;grid-template-columns:1fr 1fr;gap:12px}.year-card{font-size:24px;padding:24px 20px}.year-card:last-child{grid-column:1/-1}.learning-grid{grid-template-columns:1fr 1fr;gap:12px}.learning-card{padding:14px 15px;min-height:245px}.learning-card h2{font-size:18px}.learning-card .clip-art{height:105px}.learning-card p{font-size:13px}.learning-card .badge{font-size:10px}.learning-banner{position:relative;overflow:hidden;min-height:152px}.learning-banner h1{font-size:37px}.learning-banner p{font-size:16px;max-width:75%;position:relative;z-index:1}.banner-art{position:absolute;opacity:.22;width:62%;right:-12px;top:23px;max-height:110px}.resource-area{margin:28px 0 0}.resource-columns,.results-grid{grid-template-columns:1fr}.resource-panel:last-child{grid-column:auto}.resource-panel{padding:20px}.topic-detail-year{margin:24px 0}.about-intro{display:block;padding:24px}.about-intro h1{font-size:36px}.about-intro h2{font-size:23px}.about-intro .about-chinese{padding-left:0;padding-top:22px;margin-top:22px;border-left:0;border-top:1px solid #dce9dc}.about-intro .about-chinese h2{font-size:28px}.about-intro p{font-size:15px}.about-intro .about-chinese p{font-size:17px}.about-grid{grid-template-columns:1fr;gap:14px}.about-card{padding:24px;min-height:225px}.about-card .clip-art{opacity:.6;width:120px;bottom:7px}.about-card p{max-width:80%;font-size:15px}.about-card .card-title>span{font-size:29px;width:37px}.about-card h2{font-size:23px}.contact{grid-template-columns:1fr;padding:14px;gap:12px}.contact-copy{padding:14px;min-height:215px}.contact-copy .clip-art{position:absolute;right:0;bottom:0;opacity:.65;width:125px;height:135px}.contact-copy p{max-width:80%}.contact-form{padding:18px}.form-row{grid-template-columns:1fr;gap:0}.site-footer{font-size:12px;padding:20px}.modal{padding:28px 22px}.modal-backdrop{padding:16px}.modal h2{font-size:25px}}
@media(max-width:380px){.brand strong{font-size:18px}.brand small{font-size:10px}.brand{gap:8px}.admin-button{padding:10px}.admin-button svg{display:none}.header-actions{gap:6px}.site-header nav{gap:10px}.site-header nav a{font-size:12px}.word-content strong{font-size:19px}.word-content .pinyin{font-size:12px}.word-image{height:90px}.topic-copy h2{font-size:17px}.topic-top{min-height:275px}}
@media(prefers-reduced-motion:no-preference){.resource-link,.year-card,.feature-action{transition:box-shadow .15s,filter .15s}}@media print{.site-header,.site-footer,.modal-backdrop{display:none}main{max-width:none}.home-grid{display:block}.feature{break-inside:avoid;margin-bottom:20px}}

/* Keep the active underline below navigation text at every breakpoint. */
.site-header nav a{align-self:stretch}
.word-content{padding:6px 8px 7px}.word-content strong{line-height:1.15}.word-content .pinyin{min-height:18px}.audio-buttons{margin-top:5px}.audio-button{min-height:28px}
.feature .activity-grid{height:100%}
@media(min-width:1450px){.word-image{height:100px}}
@media(max-width:1000px){.feature .activity-grid{height:auto}}
h1,h2,h3{font-weight:600}.brand strong{font-weight:600}
@media(max-width:1250px){.about-card .clip-art{position:static;opacity:1;width:110px;height:115px;margin:14px 0 0 auto}.about-card p{max-width:100%}}
@media(max-width:700px){.about-card .clip-art{position:static;opacity:1;width:110px;height:110px;margin:14px 0 0 auto}.about-card p{max-width:100%}.contact-copy .clip-art{position:static;float:none;opacity:1;width:130px;height:130px;margin:12px 0 0 auto}.contact-copy p{max-width:100%}.contact-copy{min-height:0}}

/* Approved Yin-Yang identity and illustrated year staircase. */
.brand-emblem{display:block;width:68px;height:68px;object-fit:contain;flex-shrink:0}
.footer-brand{display:flex;align-items:center;gap:9px}.footer-brand img{display:block;object-fit:contain;flex-shrink:0}
.year-level-page{max-width:1624px;padding:0 0 36px}
.year-scene-scroll{overflow-x:auto;overflow-y:hidden;overscroll-behavior-x:contain;-webkit-overflow-scrolling:touch;background:#f2fbff;scrollbar-color:#98b8b0 #f0f7f4;scrollbar-width:thin}
.year-scene{position:relative;width:100%;min-width:940px;isolation:isolate}
.staircase-art{display:block;width:100%;height:auto;overflow:hidden}
.staircase-links{position:absolute;inset:0;pointer-events:none}
.stair-step{position:absolute;display:block;pointer-events:auto;border:3px solid transparent;border-radius:24px;transition:background-color .15s,border-color .15s;min-height:60px}
.stair-step:hover{background:#ffffff20;border-color:#ffffffb3;text-decoration:none}
.stair-step:focus-visible{outline:4px solid #0c193b;outline-offset:2px;background:#ffffff38}
.stair-step[aria-current=true]{border-color:currentColor;background:#ffffff24;box-shadow:0 0 0 3px #ffffffc9}
.stair-step-0{left:4.6%;top:79.2%;width:12%;height:14%;color:#cf2e65}
.stair-step-1{left:17.8%;top:75.4%;width:11.3%;height:15%;color:#cc5f00}
.stair-step-2{left:31.1%;top:70.4%;width:11.7%;height:16.7%;color:#9d7300}
.stair-step-3{left:45.25%;top:66%;width:11.5%;height:16.8%;color:#00833f}
.stair-step-4{left:58.86%;top:60.9%;width:11.6%;height:18%;color:#00839b}
.stair-step-5{left:72.66%;top:53%;width:11.2%;height:22.6%;color:#0066dd}
.stair-step-6{left:85.6%;top:46.1%;width:12%;height:27.6%;color:#7514d6}
.staircase-hint{font-size:14px;text-align:center;color:#526c7e;padding:15px 20px 0}.staircase-hint span{display:none}
.year-shortcuts{display:none}
.year-level-page .resource-area{margin:30px max(3.5vw,20px) 0;padding-top:15px;scroll-margin-top:15px}
@media(max-width:1000px){.year-scene-scroll{scroll-snap-type:x proximity}.stair-step{scroll-snap-align:center}.staircase-hint span{display:inline}.year-shortcuts{display:flex;justify-content:center;flex-wrap:wrap;gap:9px;padding:13px 20px 5px}.year-shortcuts a{font-size:14px;min-height:44px;min-width:65px;display:flex;align-items:center;justify-content:center}.year-shortcuts a[aria-current=true]{outline:2px solid currentColor;outline-offset:2px}}
@media(max-width:700px){.brand-emblem{width:48px;height:48px}.staircase-hint{font-size:13px;line-height:1.6;padding:14px 20px 0}.year-shortcuts{gap:8px}.year-shortcuts a{font-size:13px;min-width:68px}.year-level-page .resource-area{margin:25px 16px 0}.stair-step{border-width:2px}}
@media(prefers-reduced-motion:reduce){.stair-step{transition:none}}
@media(max-width:700px){.year-scene{min-width:740px}}
/* Staircase homepage and independent resource pages. */
.welcome-copy{position:absolute;z-index:1;left:3.5%;top:7.4%;width:49%;pointer-events:none}
.welcome-copy h1{font-size:clamp(30px,2.75vw,45px);line-height:1.15;letter-spacing:-1.1px;color:#08143a}
.welcome-copy p{font-size:clamp(16px,1.35vw,22px);line-height:1.4;color:#617797;margin-top:12px;max-width:760px}
.site-header nav[aria-label="Main navigation"]{gap:clamp(13px,1.3vw,23px);position:relative;min-width:0}
.catalog-filters{display:flex;flex-wrap:wrap;align-items:flex-end;gap:16px;padding:21px 24px;background:#f4f8f5;border-radius:14px;margin:20px 0}
.catalog-filters label{display:flex;flex-direction:column;gap:7px;font-size:13px;min-width:155px;color:#415a71;flex:1}
.catalog-filters .catalog-query{flex:1.5}
.catalog-filters select,.catalog-filters input{width:100%;min-width:0;min-height:44px;border:1px solid #dce5e0;border-radius:9px;background:#fff;padding:10px 12px;color:var(--ink);font-size:14px}
.catalog-filters .text-button{padding:12px 3px;font-size:13px}
.catalog-access-note{font-size:14px;line-height:1.6;color:var(--muted);margin:12px 3px}
.catalog-grid .resource-link{margin:0;padding:18px;border:1px solid #e4eee7;background:#f5fbf7;overflow:hidden}
.catalog-grid .resource-link:nth-child(4n+2){background:var(--peach)}
.catalog-grid .resource-link:nth-child(4n+3){background:var(--blue)}
.catalog-grid .resource-link:nth-child(4n){background:var(--lavender)}
.resource-cover{height:155px;background:#fff;border-radius:9px;margin-bottom:15px;overflow:hidden}
.resource-cover img{width:100%;height:100%;object-fit:contain;display:block}
.vocabulary-preview{border-radius:16px;padding:24px;margin-top:30px}
.vocabulary-preview .preview-intro{margin-bottom:18px}
.vocabulary-preview .preview-intro h2{margin-bottom:7px}
.vocabulary-preview .word-grid{grid-template-columns:repeat(6,minmax(0,1fr))}
.vocabulary-preview .word-image{height:130px}
.vocabulary-preview .audio-button{font-size:12px;min-height:38px}
.vocabulary-preview .audio-status{font-size:13px;margin-top:15px}
.activities-page .activity-grid{grid-template-columns:repeat(4,minmax(0,1fr));height:auto;gap:18px}
.activities-page .activity-card{min-height:250px;padding:24px}
.activities-page .activity-card h3{font-size:22px;margin-top:18px}
.activities-page .activity-card p{font-size:15px;margin-top:10px;margin-bottom:18px}
.activities-page .activity-card .circle{width:42px;height:42px;min-width:42px}
.live-preview{margin-top:26px;padding:25px;border-radius:15px;background:#f6f7fb}
.live-preview h2{font-size:23px;margin-bottom:8px}
.live-preview .button{margin-top:16px}
.panel-action{margin-top:18px}
@media(max-width:1450px){.site-header{flex-wrap:wrap}.site-header nav[aria-label="Main navigation"]{order:3;width:100%;justify-content:center;gap:clamp(16px,2vw,30px);height:44px}.site-header nav a[aria-current=page]:after{bottom:0}}
@media(max-width:1000px){.vocabulary-preview .word-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.activities-page .activity-grid{grid-template-columns:1fr 1fr}.welcome-copy{width:51%}.welcome-copy h1{font-size:32px}.welcome-copy p{font-size:17px}}
@media(max-width:700px){.site-header nav[aria-label="Main navigation"]{justify-content:flex-start;gap:20px;overflow-x:auto;height:42px;padding:0 3px;scrollbar-width:thin;scrollbar-color:#b6d4c5 transparent}.welcome-copy{left:3.5%;top:4.8%;width:325px;max-width:calc(100vw - 48px)}.welcome-copy h1{font-size:26px;line-height:1.15;letter-spacing:-.7px}.welcome-copy p{font-size:14px;line-height:1.4;margin-top:9px}.catalog-filters{padding:17px;gap:13px}.catalog-filters label{min-width:calc(50% - 13px)}.catalog-filters .catalog-query{flex-basis:100%}.catalog-filters .button{flex:1}.vocabulary-preview{padding:17px}.vocabulary-preview .word-grid{gap:8px}.vocabulary-preview .word-image{height:95px}.vocabulary-preview .word-content{padding:7px 6px}.vocabulary-preview .audio-button{font-size:10px;min-height:36px}.activities-page .activity-grid{grid-template-columns:1fr 1fr;gap:12px}.activities-page .activity-card{min-height:250px;padding:18px 14px}.activities-page .activity-card h3{font-size:20px}.activities-page .activity-card p{font-size:14px}}
@media(max-width:380px){.site-header nav[aria-label="Main navigation"]{gap:19px}.activities-page .activity-grid{grid-template-columns:1fr}.activities-page .activity-card{min-height:220px}}
.resource-cover-text{display:flex;align-items:center;justify-content:center;padding:18px;text-align:center;font-family:"PingFang SC","Microsoft YaHei",sans-serif;font-size:32px;color:#397458;line-height:1.4;background:#ffffffa8;overflow-wrap:anywhere}
.banner>.button{gap:8px;white-space:nowrap}
@media(max-width:700px){.banner>.button{margin-top:18px}}

/* Catalog pages share Topics card dimensions and responsive grid. */
.catalog-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:0 0 24px}
.catalog-heading h1{margin:0}
/* Topics: compact page heading with the topic search (replaces the banner). */
.topics-heading{flex-wrap:wrap}
.topics-heading h1 span{font-family:var(--tmr-font-chinese,KaiTi,STKaiti,"Songti SC",serif);font-weight:500;margin-left:6px}
.topics-heading .topic-search{width:min(440px,100%);border:1px solid var(--line);box-shadow:none;margin-top:0;padding:13px 18px}
@media(max-width:700px){.topics-heading .topic-search{width:100%}}
.catalog-resource-open{position:absolute;inset:0;border-radius:inherit;z-index:1}
.catalog-resource-open:focus-visible{outline:3px solid var(--ink,#23354b);outline-offset:3px}
.catalog-cards .year-tags{position:relative;z-index:2;pointer-events:none}
.catalog-cards .year-tags a{pointer-events:auto}
.catalog-placeholder{display:flex;align-items:center;justify-content:center;font-family:KaiTi,STKaiti,serif;font-size:32px;line-height:1.4;overflow-wrap:anywhere;color:#47745b;object-fit:contain}

.catalog-cover{object-fit:contain}

.catalog-cards .topic-card{color:var(--ink)}
.library-actions{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 18px}