/* TeacherHub / editorial redesign.
   One light theme. Plum is an accent, not a background wash.
   Layering: header 10, toast 20; native dialog uses the top layer. */
@font-face{font-family:HubSerif;src:url('/fonts/reading-light.woff2') format('woff2');font-weight:200;font-display:swap}
@font-face{font-family:HubSerif;src:url('/fonts/reading-bold.woff2') format('woff2');font-weight:700;font-display:swap}
:root{--paper:#ffffff;--white:#fff;--ink:#27272a;--muted:#646469;--accent:#29292c;--accent-hover:#47474b;--line:#e5e5e8;--surface:#f5f5f6;--soft:#f5f5f6;--radius:6px;--serif:HubSerif,'Songti SC','STSong',serif;--sans:'PingFang SC','Microsoft YaHei',sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.75 var(--sans);-webkit-font-smoothing:antialiased}::selection{background:#dddde1;color:#27272a}button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.52}a{color:inherit;text-decoration:none}img{display:block;max-width:100%;height:auto}figure{margin:0}p{margin:0 0 1em;text-wrap:pretty}h1,h2,h3,h4{font-family:var(--serif);font-weight:700;line-height:1.45;margin:0;text-wrap:balance}h1{font-weight:200}h2{font-size:36px}h3{font-size:24px}a,button,input,textarea,summary{outline-offset:5px}a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:2px solid var(--accent)}[hidden]{display:none!important}.skip-link{position:fixed;left:20px;top:-100px;padding:12px 24px;background:var(--ink);color:white;z-index:30}.skip-link:focus{top:12px}.site-header{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.95);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}.header-inner{max-width:1376px;padding:0 48px;margin:auto;height:80px;display:flex;align-items:center;justify-content:space-between;gap:30px}.brand{font:600 30px/1.1 Georgia,serif;letter-spacing:-1.3px;display:flex;align-items:center}.brand small{display:inline-block;font:11px/1.6 var(--sans);letter-spacing:.12em;color:var(--muted);border-left:1px solid #d4d4d8;margin-left:21px;padding-left:21px;vertical-align:middle}.header-inner nav{display:flex;align-items:center;gap:28px;font-size:13px;white-space:nowrap}.header-inner nav>a{position:relative;padding:8px 0;color:var(--muted);transition:color .2s}.header-inner nav>a:hover,.header-inner nav>a.active{color:var(--accent)}.header-inner nav>a.active:after{content:'';position:absolute;bottom:1px;left:0;width:18px;height:1px;background:var(--accent)}.auth-open{border:1px solid #d4d4d8;background:transparent;color:var(--accent);border-radius:var(--radius);font-size:12px;padding:8px 17px;transition:background .2s}.auth-open:hover{background:#eeeeef}main{max-width:1376px;padding:0 48px;margin:auto;min-height:60vh}
.btn{display:inline-flex;gap:30px;align-items:center;justify-content:center;min-height:48px;padding:13px 25px;background:var(--accent);border:1px solid var(--accent);border-radius:var(--radius);color:#fff;font-size:14px;font-weight:500;line-height:1.5;transition:background .2s,transform .2s}.btn:hover{background:var(--accent-hover);border-color:var(--accent-hover)}.btn:active{transform:translateY(1px)}.btn>span{font-size:20px;transition:transform .25s}.btn:hover>span{transform:translate(2px,-2px)}.btn.secondary{background:transparent;color:var(--accent);border-color:#bbbbc1}.btn.secondary:hover{background:#efeff1}.btn.text{background:none;border:0;color:var(--muted);padding-left:0;box-shadow:none}.text-link,.inline{display:inline-flex;align-items:center;gap:18px;font-size:13px;padding:5px 0;border-bottom:1px solid #d4d4d8;color:var(--accent);width:fit-content;transition:color .2s,border-color .2s}.text-link:hover,.inline:hover{color:var(--accent-hover);border-color:var(--accent)}.text-link>span{transition:transform .25s}.text-link:hover>span{transform:translate(2px,-1px)}.hub-kicker,.eyebrow{font:11px/1.5 var(--sans);letter-spacing:.12em;color:var(--accent);margin:0 0 26px}.eyebrow{display:block}.hub-hero{display:grid;grid-template-columns:1.13fr 1fr;gap:80px;align-items:center;padding:52px 0 62px}.hero-copy{padding-bottom:25px}.hub-kicker>span{margin-left:17px;color:var(--muted);font-size:10px;letter-spacing:.12em}.hub-hero h1{font-size:clamp(40px,4.65vw,69px);line-height:1.42;letter-spacing:-.035em;margin:0 0 29px;white-space:nowrap}.hub-hero h1 strong{font-weight:700;color:var(--accent)}.hub-lead{font-size:15px;line-height:2.05;color:var(--muted);margin:0 0 33px;max-width:500px}.hero-actions{display:flex;gap:27px;align-items:center}.hero-actions .text-link{border:0;font-size:12px;gap:12px}.hero-artwork{min-width:0}.artwork-frame{position:relative;overflow:hidden;background:#f4f4f5;aspect-ratio:4/4.65}.artwork-frame img{width:100%;height:100%;object-fit:cover;object-position:50% 70%;transition:transform 1.2s cubic-bezier(.16,1,.3,1)}.artwork-frame:hover img{transform:scale(1.025)}.artwork-note{position:absolute;top:36px;left:34px;font:italic 28px/1.25 Georgia,serif;color:#514a4e}.hero-artwork figcaption{display:flex;justify-content:space-between;gap:12px;padding-top:14px;color:var(--muted);font-size:10px;letter-spacing:.04em}.hero-artwork figcaption>span:last-child{font-size:9px;letter-spacing:.1em}.intro-line{display:flex;align-items:center;justify-content:space-between;gap:30px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:27px 0}.intro-line p{font-family:var(--serif);font-size:20px;font-weight:200;margin:0}.intro-line strong{font-weight:700}.intro-line a{font-size:12px;display:flex;gap:28px;color:var(--accent)}
.hub-now,.hub-how,.hub-next,.hub-membership,.hub-contribute,.hub-about{padding:100px 0;scroll-margin-top:100px}.section-heading{margin-bottom:42px}.section-heading .hub-kicker{margin-bottom:16px}.section-intro{color:var(--muted);font-size:14px;line-height:1.9;max-width:600px;margin:16px 0 0}.featured-tool{display:grid;grid-template-columns:1.38fr 1fr;gap:62px;align-items:center}.product-preview{padding:26px 26px 18px;background:#f4f4f5;overflow:hidden}.product-preview>a{display:block;border:1px solid #e4e4e7;overflow:hidden;box-shadow:0 8px 20px #50434b0c}.product-preview img{width:100%;transition:transform .6s}.product-preview a:hover img{transform:scale(1.012)}.product-preview figcaption{display:flex;justify-content:space-between;gap:10px;color:#717177;font-size:10px;padding-top:15px}.availability{display:inline-block;color:var(--accent);border:1px solid #d4d4d8;border-radius:2px;padding:3px 9px;font-size:10px;letter-spacing:.03em}.featured-copy h3{font-size:31px;margin:18px 0 18px}.featured-copy>p{color:var(--muted);line-height:1.95;font-size:14px}.feature-points{list-style:none;margin:21px 0 24px;padding:0}.feature-points li{font-size:12px;color:#57575c;padding:5px 0;display:flex;gap:12px;align-items:baseline}.feature-points li:before{content:'+';color:#929299;font-size:15px}.feature-link{font-size:14px;padding:8px 0;gap:35px}.fine-print,.hub-note{color:#717177;font-size:11px;line-height:1.8;margin:22px 0 0}.featured-copy .fine-print{font-size:10px}
.hub-how{border-top:1px solid var(--line);padding-top:78px}.hub-steps{display:grid;grid-template-columns:.9fr 1.3fr 1fr;gap:48px;list-style:none;padding:0;margin:44px 0 0}.hub-steps li{display:flex;gap:22px;border-top:1px solid #dddddf;padding-top:24px}.hub-steps li>span{font:200 39px/1 var(--serif);color:#a1a1a7}.hub-steps h3{font-size:20px;margin-bottom:14px}.hub-steps p{font-size:13px;color:var(--muted);line-height:1.9;margin:0}.hub-steps a{margin-top:12px;font-size:12px}
.hub-next{background:#f7f7f8;border-radius:var(--radius);padding:50px 56px}.hub-next .section-heading{margin-bottom:30px}.hub-next h2{font-size:32px}.hub-next h2 br{display:none}.hub-next .section-intro{max-width:none}.roadmap article{display:grid;grid-template-columns:1fr 1.5fr auto;align-items:center;gap:25px;border-bottom:1px solid #e1e1e4;padding:22px 0}.roadmap article:last-child{border-bottom:0}.roadmap h3{font-size:21px}.roadmap p{font-size:13px;color:var(--muted);margin:0}.roadmap article>span{font-size:10px;color:#717177;border:1px solid #d4d4d8;padding:2px 8px;border-radius:2px}.hub-next .fine-print{margin:10px 0 0}
.hub-membership{padding-top:112px}.hub-prices{display:grid;grid-template-columns:repeat(4,1fr);margin:38px 0 0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.hub-prices article{padding:30px 28px 24px;background:#ffffff;border-left:1px solid var(--line);display:flex;flex-direction:column;align-items:start}.hub-prices article:first-child{background:#f4f4f6;border:0}.hub-prices small{font-size:13px;color:#525258}.hub-price{font:200 47px/1.2 var(--serif);margin:17px 0 21px;letter-spacing:-.04em;display:flex;align-items:baseline;gap:8px}.hub-price span{font:11px var(--sans);letter-spacing:0;color:var(--muted)}.hub-prices p{font-size:12px;line-height:1.9;color:var(--muted);margin:0 0 27px;flex:1;min-height:46px}.plan-status{font-size:10px;color:#717177;border-top:1px solid #dddde0;width:100%;padding-top:13px}.hub-membership>.fine-print{max-width:840px}
.hub-contribute{border-top:1px solid var(--line)}.hub-contribute>.section-heading{margin-bottom:35px}.contribution-choices{display:grid;grid-template-columns:1fr 1fr;gap:20px}.contribution-choice{background:transparent;border:1px solid #dddde0;border-radius:var(--radius);padding:29px 30px;text-align:left;color:var(--ink);transition:background .25s,border-color .25s;position:relative}.contribution-choice:hover{background:#f6f6f7}.contribution-choice.selected{background:#f4f4f6;border-color:#9999a0}.choice-number{display:block;font-size:11px;color:var(--accent);margin-bottom:12px}.contribution-choice strong{font:700 23px/1.5 var(--serif);display:block}.contribution-choice p{font-size:13px;color:var(--muted);margin:11px 0 24px}.choice-action{font-size:11px;color:var(--accent);display:flex;justify-content:space-between}.choice-action>span{font-size:16px}.hub-submit-layout{padding-top:38px}.hub-submit-layout form{display:grid;gap:24px}#form-heading{font-size:25px;margin-bottom:5px}#idea-form label{display:grid;gap:10px;font-size:12px;color:#525258}#idea-form input,#idea-form textarea{width:100%;padding:14px 17px;border:1px solid #dddde0;background:#ffffff;border-radius:var(--radius);color:var(--ink);font-size:14px}#idea-form input::placeholder,#idea-form textarea::placeholder{color:#77777d}#idea-form textarea{resize:vertical;min-height:140px}#idea-form input:focus,#idea-form textarea:focus{border-color:var(--accent)}.form-submit{display:flex;align-items:center;gap:25px}.form-submit .fine-print{margin:0}#idea-status:empty{display:none}#idea-status{font-size:12px;color:var(--accent);margin:0}.hub-submit-aside{display:grid;grid-template-columns:1fr 1fr;gap:20px 40px;border-top:1px solid var(--line);margin-top:35px;padding-top:25px}.hub-submit-aside h3{font-size:17px;margin:0 0 10px}.hub-submit-aside p{font-size:12px;color:var(--muted);line-height:1.9;margin:0}.hub-submit-aside>a{grid-column:1/-1;font-size:12px;margin-top:5px}
.hub-about{border-top:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;gap:100px;padding-top:78px;padding-bottom:55px}.about-heading .hub-kicker{letter-spacing:0;color:var(--muted);font-size:12px}.about-heading h2{font-size:44px;line-height:1.4}.author-sign{font:italic 70px/1.6 Georgia,serif;color:#aaaab0;letter-spacing:-.06em}.hub-author>p{font-size:14px;color:var(--muted);line-height:2.05}.hub-author .hub-role{font-size:11px;color:var(--accent);margin:0 0 23px}.hub-contact{margin-top:30px}.hub-social,.hub-wechat{display:flex;justify-content:space-between;align-items:center;gap:25px;border-top:1px solid var(--line);padding:20px 0}.hub-social small,.hub-wechat small{font-size:10px;color:var(--muted);display:block;margin-bottom:4px}.hub-social b,.hub-wechat b{font-size:14px;font-weight:500}.hub-social>span:last-child{font-size:24px;color:var(--accent);transition:transform .25s}.hub-social:hover>span:last-child{transform:translate(4px,-4px)}.hub-wechat b{color:#77777d;font-weight:400}.wechat-placeholder{border:1px dashed #d4d4d8;width:38px;height:38px;display:grid;place-items:center;color:#9999a0}.hub-wordmark{font:500 clamp(50px,15vw,213px)/1.05 Georgia,serif;letter-spacing:-.075em;color:#dddde0;padding:15px 0 32px;white-space:nowrap}.hub-wordmark span{color:#aaaab0}
footer{max-width:1280px;margin:0 auto;border-top:1px solid var(--line);padding:30px 0 35px;display:flex;align-items:center;gap:30px;font-size:11px;color:var(--muted)}.footer-brand{font:500 24px Georgia,serif;letter-spacing:-.045em;flex:1;color:var(--ink)}.footer-brand span{display:block;font:11px var(--sans);letter-spacing:0;color:var(--muted);margin-top:9px}footer>a:not(.footer-brand){color:var(--accent)}#toast{position:fixed;z-index:20;left:50%;bottom:25px;transform:translateX(-50%);max-width:90vw;width:max-content;background:var(--accent);color:white;border-radius:var(--radius);padding:13px 22px;font-size:13px;opacity:0;pointer-events:none;transition:opacity .2s}#toast.show{opacity:1}.page-progress{position:fixed;top:0;left:0;height:2px;width:100%;background:var(--accent);transform:scaleX(0);transform-origin:left;pointer-events:none;z-index:20}
/* Catalog, detail and setup share the same typography and surfaces. */
.shop-head{padding:68px 0 38px}.shop-head h1{font-size:60px;margin:0 0 16px;line-height:1.3}.shop-head h1 span{color:var(--accent)}.shop-head p{color:var(--muted);font-size:15px;margin:0}.catalog{padding:30px 0 95px;border-top:1px solid var(--line);min-height:55vh}.section-head{display:flex;align-items:center;justify-content:space-between;gap:25px;margin-bottom:26px}.section-head h2{font-size:24px}.section-head small{font:12px var(--sans);color:var(--muted);margin-left:12px}.search{position:relative;min-width:320px}.search span{position:absolute;top:8px;left:13px;color:#77777d;font-size:24px}.search input{padding:12px 16px 12px 43px;border:1px solid var(--line);background:#ffffff;border-radius:var(--radius);width:100%;font-size:13px;color:var(--ink)}.filters{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:33px}.filter{border:1px solid var(--line);padding:7px 14px;font-size:11px;background:transparent;border-radius:3px;color:var(--muted);transition:background .2s}.filter.active{background:#eeeef0;border-color:#bcbcc2;color:var(--accent)}.filter:hover{border-color:#bcbcc2}.card{display:grid;grid-template-columns:1.5fr 1fr;gap:45px;padding:38px;background:#ffffff;border:1px solid var(--line);border-radius:var(--radius)}.card-top{display:flex;align-items:center;gap:20px}.icon-tile{display:grid;place-items:center;width:58px;height:66px;font:28px Georgia,serif;background:#eeeef0;border-radius:4px;color:var(--accent);flex-shrink:0}.card h3{font-size:27px}.meta{font-size:10px;color:var(--muted);margin-top:6px}.card-summary{font-size:14px;color:var(--muted);line-height:1.9;max-width:600px;margin:24px 0}.tags{display:flex;gap:8px;flex-wrap:wrap}.tag{font-size:10px;background:#f3f3f5;color:#68686e;padding:4px 9px;border-radius:3px}.card-bottom{display:flex;gap:20px;align-items:center;margin-top:28px}.card-side{border-left:1px solid var(--line);padding-left:35px;display:flex;flex-direction:column;justify-content:center}.card-side b{font-family:var(--serif);font-size:21px;font-weight:700;margin-bottom:20px}.card-side p{font-size:12px;color:var(--muted);margin:7px 0}.card-side p:before{content:'+';margin-right:10px;color:#9999a0}.shop-note{color:var(--muted);font-size:12px;margin-top:30px}.back{display:inline-block;font-size:12px;color:var(--accent);margin-bottom:30px}.detail{padding:42px 0 85px}.detail-hero{display:flex;justify-content:space-between;align-items:center;gap:50px;border-bottom:1px solid var(--line);padding:10px 0 38px}.detail h1,.connect h1{font-size:45px;line-height:1.35;margin:0 0 20px}.lead{font-size:14px;color:var(--muted);max-width:680px;line-height:1.9}.actions{display:flex;gap:12px;flex-wrap:wrap}.detail-hero .actions{flex-shrink:0}.detail-layout{display:grid;grid-template-columns:1.25fr 1fr;gap:65px;margin-top:44px}.block{margin-bottom:38px}.block h2{font-size:23px;margin-bottom:19px}.feature-list{list-style:none;margin:0;padding:0;display:grid;gap:11px}.feature-list li{font-size:13px;color:#646469;padding-left:21px;position:relative}.feature-list li:before{content:'+';position:absolute;left:0;color:#9999a0}.plain-list{padding-left:20px;font-size:13px;color:var(--muted);line-height:2}.small{font-size:11px;color:var(--muted)}.small a{text-decoration:underline;text-underline-offset:3px}.hash{font:10px/1.8 monospace;overflow-wrap:anywhere}.setup{align-self:start;position:sticky;top:112px;background:#f6f6f7;border:1px solid #e1e1e4;border-radius:var(--radius);padding:30px}.setup h2{font-size:27px;margin-bottom:12px}.setup-intro{font-size:12px;color:var(--muted);line-height:1.85}.advanced{border:1px solid #d4d4d8;border-radius:var(--radius);padding:14px;margin:20px 0;background:#fafafa}.advanced summary{font-size:12px;color:var(--accent);cursor:pointer}.advanced[open] summary{margin-bottom:20px}fieldset{border:0;padding:0;margin:0 0 20px}legend{font-size:12px;margin-bottom:12px;padding:0}.choices{display:grid;grid-template-columns:1fr 1fr;gap:8px}.choice{font-size:11px;display:flex;align-items:center;gap:6px;border:1px solid #d4d4d8;padding:9px 8px;background:#ffffff;border-radius:3px;cursor:pointer}.choice:has(input:checked){background:#eeeef0;border-color:#a1a1a8}.choice input{accent-color:var(--accent);margin:0}.custom-scope{width:100%;padding:10px;border:1px solid #bdbdc3;background:white;font-size:12px;margin-top:10px;border-radius:3px}.prompt{font:12px/1.9 var(--sans);white-space:pre-wrap;overflow-wrap:anywhere;background:#fafafa;border:1px solid #e1e1e4;padding:19px;max-height:300px;overflow:auto;color:#57575d;border-radius:4px}.note{font-size:12px;line-height:1.9;background:#f6f6f7;border-left:2px solid #aaaab0;padding:14px;color:#68686e}.connect{max-width:850px;margin:auto;padding:45px 0 85px}.connect .eyebrow{margin-top:5px}.connect>.prompt{font-size:14px;padding:28px;max-height:none;line-height:2;margin:30px 0 22px}.connect>.small{margin:13px 0 30px}.connection-details{padding:20px}.connection-details p{font-size:12px;color:var(--muted)}.code-row{display:flex;align-items:center;gap:18px;background:white;padding:12px;border:1px solid #d4d4d8}.code-row code{overflow-wrap:anywhere;flex:1;min-width:0;font-size:12px}.code-row button{background:#eeeef0;border:1px solid #bdbdc3;padding:7px 12px;flex-shrink:0;font-size:12px;color:var(--accent);border-radius:3px}.download-option{padding-top:30px;margin-top:35px;border-top:1px solid var(--line)}.download-option h2{font-size:26px;margin-bottom:14px}.download-option p{font-size:14px;color:var(--muted);margin-bottom:22px}.empty,.loading{padding:90px 20px;text-align:center;color:var(--muted);font-size:14px}.error{max-width:650px;border:1px solid var(--line);border-radius:var(--radius);margin:65px auto;padding:38px;background:#fafafa}.error h1{font-size:33px;margin:0 0 18px}.error p{font-size:14px;color:var(--muted)}
/* Authentication remains a real dialog; unconfigured service stays explicit. */
.auth-dialog{max-width:460px;width:calc(100% - 36px);padding:35px;background:#ffffff;color:var(--ink);border:1px solid #dddddf;border-radius:10px;box-shadow:0 30px 90px #27272a22}.auth-dialog::backdrop{background:#27272a45;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}.auth-dialog .hub-kicker{margin-bottom:18px}.auth-dialog h2{font-size:32px;margin:0 0 15px}.auth-dialog p{font-size:13px;line-height:1.85;color:var(--muted)}.auth-close{position:absolute;right:16px;top:10px;border:0;background:none;color:#77777d;font-size:25px}.auth-dialog form{display:grid;gap:17px;margin:25px 0}.auth-dialog label{display:grid;gap:8px;font-size:12px}.auth-dialog input{padding:11px 13px;border:1px solid #d4d4d8;background:white;color:var(--ink);width:100%;border-radius:4px}.auth-dialog .btn{justify-self:start;font-size:13px}.auth-dialog .auth-privacy{font-size:10px}.auth-dialog .auth-status{font-size:12px;color:var(--accent)}.auth-logout{border:1px solid #bcbcc2;background:#eeeef0;padding:9px 20px;border-radius:4px;color:var(--accent)}
@media(min-width:1550px){.hub-hero{gap:100px;padding:65px 0 75px}.hub-hero h1{font-size:69px}.artwork-frame{aspect-ratio:4/4.4}}
@media(max-width:1200px){.header-inner,main{padding-left:36px;padding-right:36px}.brand small{display:none}.header-inner nav{gap:22px}.hub-hero{gap:42px}.hub-hero h1{font-size:4.8vw}.hero-actions{gap:18px;flex-wrap:wrap}.artwork-note{font-size:24px;top:25px;left:25px}.featured-tool{gap:40px}.featured-copy h3{font-size:27px}.hub-steps{gap:25px}.hub-next{padding:40px}.hub-prices article{padding:25px 20px}.hub-price{font-size:40px}.hub-about{gap:70px}.detail-layout{gap:35px}.setup{padding:24px}footer{margin-left:36px;margin-right:36px}.product-preview{padding:18px}.hub-now,.hub-how,.hub-membership,.hub-contribute{padding-top:80px;padding-bottom:80px}}
@media(max-width:900px){.header-inner nav{gap:16px}.header-inner nav>a[href="/#about"]{display:none}.hub-hero{gap:30px}.hub-hero h1{font-size:4.7vw}.hub-lead{font-size:13px}.hero-actions{display:block}.hero-actions>.text-link{display:flex;margin-top:16px}.featured-tool{grid-template-columns:1.25fr 1fr;gap:28px}.featured-copy>p{font-size:12px}.featured-copy h3{font-size:23px}.feature-points li{font-size:11px}.hub-about{gap:38px}.hub-price{font-size:34px}.detail-hero{align-items:start;flex-direction:column;gap:20px}.detail-layout{grid-template-columns:1.1fr 1fr;gap:25px}.detail h1{font-size:37px}.card{gap:25px;padding:25px;grid-template-columns:1.3fr 1fr}.card h3{font-size:22px}.card-side{padding-left:25px}.card-side b{font-size:18px}}
@media(max-width:767px){html{scroll-padding-top:100px}.header-inner{height:auto;min-height:94px;padding:14px 22px;display:grid;grid-template-columns:1fr;gap:13px}.brand{font-size:26px}.header-inner nav{justify-content:space-between;gap:8px;font-size:11px}.header-inner nav>a[href="/#about"]{display:block}.header-inner nav>a{padding:3px 0}.auth-open{padding:5px 9px;font-size:10px;min-height:30px}.header-inner nav .active:after{bottom:-3px}main{padding:0 22px}.hub-hero{display:flex;flex-direction:column;gap:35px;padding:43px 0 33px;align-items:stretch}.hero-copy{padding:0}.hub-kicker{font-size:10px;margin-bottom:23px}.hub-kicker>span{font-size:8px;margin-left:10px}.hub-hero h1{font-size:clamp(31px,7.65vw,52px);line-height:1.5;margin-bottom:19px}.hub-lead{font-size:13px;line-height:2;margin-bottom:23px}.hero-actions{display:flex;flex-wrap:wrap;gap:14px 20px}.hero-actions .text-link{margin:0;font-size:10px;gap:5px}.btn{min-height:44px;padding:12px 18px;font-size:12px;gap:18px}.btn>span{font-size:17px}.artwork-frame{aspect-ratio:1.18;}.artwork-frame img{object-position:50% 65%}.artwork-note{top:23px;left:23px;font-size:23px}.hero-artwork figcaption{font-size:9px;padding-top:11px}.hero-artwork figcaption>span:last-child{font-size:8px}.intro-line{padding:22px 0;align-items:flex-start;gap:10px}.intro-line p{font-size:16px;line-height:1.8;max-width:235px}.intro-line p strong{display:block}.intro-line a{font-size:10px;gap:10px;white-space:nowrap;margin-top:6px}h2{font-size:29px}.section-heading{margin-bottom:26px}.section-heading .hub-kicker{margin-bottom:13px}.hub-now,.hub-how,.hub-next,.hub-membership,.hub-contribute,.hub-about{padding:57px 0;scroll-margin-top:120px}.section-intro{font-size:12px;line-height:1.9;margin-top:14px}.featured-tool{grid-template-columns:1fr;gap:28px}.product-preview{padding:16px 16px 13px}.product-preview figcaption{font-size:8px;gap:5px;padding-top:11px}.featured-copy h3{font-size:28px;margin:13px 0 15px}.featured-copy>p{font-size:13px}.feature-points{margin:15px 0 21px}.feature-points li{font-size:12px}.feature-link{font-size:13px}.hub-steps{grid-template-columns:1fr;gap:25px;margin-top:30px}.hub-steps li{gap:22px;padding-top:20px}.hub-steps li>span{font-size:35px;min-width:25px}.hub-steps h3{font-size:21px;margin-bottom:10px}.hub-steps p{font-size:12px}.hub-next{padding:30px 23px}.hub-next h2{font-size:26px}.hub-next h2 br{display:block}.hub-next .section-heading{margin-bottom:23px}.roadmap article{grid-template-columns:1fr auto;gap:7px;padding:20px 0}.roadmap h3{font-size:20px}.roadmap p{grid-row:2;grid-column:1;font-size:11px}.roadmap article>span{grid-row:1/3;grid-column:2;font-size:9px}.hub-prices{grid-template-columns:1fr 1fr;margin-top:26px}.hub-prices article{padding:24px 17px 20px}.hub-prices article:nth-child(3){border-left:0}.hub-prices article:nth-child(n+3){border-top:1px solid var(--line)}.hub-price{font-size:37px;gap:5px;margin:14px 0 20px}.hub-price span{font-size:9px}.hub-prices p{font-size:10px;min-height:38px;margin-bottom:22px}.hub-prices small{font-size:12px}.plan-status{font-size:9px}.fine-print,.hub-note{font-size:10px}.contribution-choices{gap:10px}.contribution-choice{padding:19px 15px}.choice-number{font-size:10px;margin-bottom:9px}.contribution-choice strong{font-size:18px;line-height:1.55}.contribution-choice p{font-size:11px;margin:10px 0 16px;min-height:40px}.choice-action{font-size:10px}.hub-submit-layout{padding-top:28px}#form-heading{font-size:23px}#idea-form label{font-size:11px;gap:8px}#idea-form input,#idea-form textarea{font-size:16px;padding:12px 14px}#idea-form input::placeholder,#idea-form textarea::placeholder{font-size:12px}.form-submit{display:block}.form-submit .fine-print{margin-top:15px}.hub-submit-aside{grid-template-columns:1fr;gap:23px;padding-top:25px}.hub-submit-aside h3{font-size:17px}.hub-submit-aside p{font-size:11px}.hub-about{grid-template-columns:1fr;gap:16px;padding-bottom:38px}.about-heading h2{font-size:36px}.about-heading .hub-kicker{font-size:11px;margin-bottom:17px}.author-sign{font-size:52px;display:block;margin:10px 0 0}.hub-author>p{font-size:13px}.hub-author .hub-role{font-size:10px;margin-bottom:17px}.hub-wordmark{font-size:15.5vw;padding:8px 0 27px}.hub-social,.hub-wechat{padding:16px 0}footer{margin:0 22px;flex-wrap:wrap;gap:22px;padding:26px 0;font-size:10px}.footer-brand{font-size:23px}.footer-brand span{font-size:9px}footer>span{width:100%;font-size:9px}.shop-head{padding:45px 0 28px}.shop-head h1{font-size:43px}.shop-head p{font-size:13px}.eyebrow{font-size:10px;margin-bottom:20px}.catalog{padding-top:24px;padding-bottom:60px}.section-head{align-items:stretch;flex-direction:column;gap:20px}.section-head h2{font-size:23px}.search{min-width:0}.search input{font-size:16px}.search input::placeholder{font-size:12px}.filters{gap:7px;margin-bottom:23px}.filter{font-size:10px;padding:6px 10px}.card{grid-template-columns:1fr;padding:23px;gap:25px}.card h3{font-size:22px}.card-top{gap:13px}.icon-tile{width:42px;height:53px;font-size:22px}.meta{font-size:9px}.card-summary{font-size:12px}.card-side{border-left:0;border-top:1px solid var(--line);padding:22px 0 0}.card-side b{font-size:20px;margin-bottom:14px}.card-side p{font-size:11px}.card-bottom{gap:16px}.detail{padding:32px 0 50px}.detail h1,.connect h1{font-size:34px}.detail-hero{padding-top:0}.detail-layout{grid-template-columns:1fr;gap:10px;margin-top:29px}.block h2{font-size:23px}.feature-list li{font-size:12px}.plain-list{font-size:12px}.lead{font-size:13px}.setup{position:static;padding:25px 21px}.setup h2{font-size:27px}.setup input[type=text],.custom-scope{font-size:16px}.prompt{font-size:12px}.choices{gap:7px}.connect{padding:32px 0 55px}.connect>.prompt{padding:21px;font-size:13px}.connection-details{padding:15px}.code-row{align-items:start;gap:8px}.code-row code{font-size:10px}.code-row button{font-size:11px;padding:5px 9px}.download-option h2{font-size:25px}.download-option p{font-size:12px}.auth-dialog{padding:29px 25px}.auth-dialog input{font-size:16px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}.page-progress{display:none}}
@media(prefers-reduced-transparency:reduce){.site-header{background:var(--paper);backdrop-filter:none}.auth-dialog::backdrop{background:#4a3d48;backdrop-filter:none}}

/* Minimal, image-free composition. Typography and space carry the hierarchy. */
.header-inner,main{max-width:1240px}.site-header{backdrop-filter:none;-webkit-backdrop-filter:none}.header-inner{height:76px}.brand{font-size:27px}.brand small{font-size:10px}.header-inner nav{gap:25px}
.hub-hero{display:block;padding:82px 0 88px;text-align:center;max-width:820px;margin:auto}.hero-copy{padding:0}.hub-hero .hub-kicker{letter-spacing:.06em;color:#727278;font-size:12px;margin-bottom:27px}.hub-hero h1{font-size:60px;line-height:1.48;letter-spacing:-.035em;white-space:normal}.hub-hero h1 strong{color:var(--ink)}.hub-lead{margin:24px auto 29px;max-width:560px;font-size:14px;line-height:2}.hero-actions{justify-content:center;gap:25px}.hero-actions .text-link{font-size:12px;color:#646469}
.hub-now{border-top:1px solid var(--line);padding-top:45px;padding-bottom:68px}.section-heading{margin-bottom:28px}h2{font-size:29px}.minimal-tool{display:flex;align-items:center;justify-content:space-between;gap:40px;padding:32px 36px;background:#f7f7f8;border:1px solid #eeeeef;border-radius:6px}.minimal-tool h3{font-size:28px;margin:12px 0 13px}.minimal-tool p{font-size:13px;color:var(--muted);margin-bottom:20px;max-width:620px}.minimal-tool>.text-link{flex-shrink:0;font-size:13px;gap:45px}.tool-capabilities{display:flex;gap:20px;flex-wrap:wrap;font-size:11px;color:#717177}.availability{font-size:10px;border:0;background:#eaeaec;color:#55555b;padding:3px 8px}.hub-now>.fine-print{font-size:10px;margin-top:15px}
.hub-how,.hub-membership,.hub-contribute{padding:66px 0}.hub-steps{margin-top:33px;gap:45px}.hub-steps h3{font-size:19px}.hub-steps p{font-size:12px}.hub-steps li>span{font-size:33px}.hub-next{padding:30px 36px;background:#f7f7f8}.hub-next h2{font-size:27px}.hub-next .section-heading{margin-bottom:15px}.roadmap article{padding:18px 0}.roadmap h3{font-size:19px}.hub-membership{border-bottom:1px solid var(--line)}.membership-details{margin-top:27px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:17px 0}.membership-details summary{font-size:13px;color:#424247;cursor:pointer}.membership-details summary>span{float:right;color:#8a8a90;font-size:11px}.hub-prices{margin:22px 0 6px}.hub-membership>.fine-print{font-size:10px;max-width:780px}.hub-contribute{border-top:0}.contribution-choice{padding:24px}.contribution-choice strong{font-size:21px}.contribution-choice p{font-size:12px}.hub-submit-layout form{gap:20px}#form-heading{font-size:23px}.hub-submit-aside h3{font-size:16px}.hub-about{padding:62px 0;gap:80px}.about-heading h2{font-size:36px}.hub-author>p{font-size:13px}.hub-contact{margin-top:22px}footer{max-width:1144px}
@media(max-width:1100px){.hub-hero{padding:70px 0 76px}.hub-hero h1{font-size:56px}.hero-actions{display:flex}.hero-actions>.text-link{margin:0}.minimal-tool{gap:28px}.minimal-tool>.text-link{gap:15px}}
@media(max-width:767px){.header-inner{height:auto;min-height:94px}.header-inner nav{gap:8px}.brand{font-size:26px}.hub-hero{padding:47px 0 52px}.hub-hero .hub-kicker{font-size:10px;margin-bottom:22px}.hub-hero h1{font-size:clamp(31px,7.65vw,47px);line-height:1.5}.hub-lead{font-size:12px;line-height:2;margin:22px auto 25px}.hero-actions{gap:18px}.hero-actions .text-link{font-size:10px}.hub-now{padding:34px 0 45px}h2{font-size:24px}.section-heading{margin-bottom:22px}.minimal-tool{display:block;padding:24px}.minimal-tool h3{font-size:25px}.minimal-tool p{font-size:12px;line-height:1.9}.tool-capabilities{gap:7px 15px;font-size:10px}.minimal-tool>.text-link{margin-top:24px;gap:38px;font-size:12px}.hub-how,.hub-membership,.hub-contribute{padding:45px 0}.hub-steps{gap:22px}.hub-steps h3{font-size:19px}.hub-next{padding:26px 23px}.hub-next h2{font-size:23px}.roadmap h3{font-size:18px}.membership-details summary{font-size:12px}.membership-details summary>span{font-size:9px}.contribution-choice{padding:18px 14px}.contribution-choice strong{font-size:17px}.contribution-choice p{font-size:10px}.hub-about{gap:25px;padding:45px 0}.about-heading h2{font-size:29px}.hub-author>p{font-size:12px}}

/* Multi-Skill directory: keep the approved monochrome layout. */
#available-tools{display:grid;gap:14px}.minimal-tool .tool-actions{display:flex;flex-direction:column;align-items:flex-end;gap:15px;flex-shrink:0}.tool-actions .text-link{font-size:11px;gap:14px}.minimal-tool h3{font-size:26px}.minimal-tool p{margin-bottom:15px}.minimal-tool{padding:28px 32px}.tool-actions .btn{font-size:12px;min-width:166px;justify-content:space-between}.tool-capabilities{font-size:10px;gap:8px 18px}#results{display:grid;gap:18px}.card h3{margin-top:16px}.hub-prices{grid-template-columns:1fr 1fr}.hub-prices article{padding:30px}.hub-prices p{min-height:48px}.connect-picker{display:flex;gap:20px;align-items:center;font-size:13px;margin-top:28px}.connect-picker select{font:inherit;padding:11px 15px;border:1px solid var(--line);border-radius:4px;background:white;min-width:230px;color:var(--ink)}.copy-dialog{max-width:600px;width:calc(100% - 40px);border:1px solid var(--line);border-radius:8px;padding:28px}.copy-dialog::backdrop{background:#0004}.copy-dialog h2{font-size:25px;margin-bottom:20px}.copy-dialog textarea{width:100%;height:280px;resize:vertical;font:13px/1.8 var(--sans);border:1px solid var(--line);padding:15px;margin-bottom:20px}.card-bottom{flex-wrap:wrap}
@media(max-width:767px){.minimal-tool{padding:23px}.minimal-tool h3{font-size:24px}.minimal-tool .tool-actions{align-items:center;flex-direction:row;justify-content:space-between;margin-top:23px;gap:14px}.tool-actions .btn{min-width:0;font-size:11px;padding:11px 14px;gap:12px}.tool-actions .text-link{font-size:10px;gap:6px}.hub-prices article{padding:24px 16px}.hub-price{flex-wrap:wrap}.hub-price span{font-size:10px}.membership-details summary>span{float:none;display:block;margin:8px 0 0 16px}.connect-picker{flex-direction:column;align-items:stretch;gap:10px}.connect-picker select{width:100%;min-width:0}}

.hub-steps .text-link{font-size:11px;margin-top:13px;gap:13px}.update-note{font-size:12px;line-height:1.9;margin:28px 0 0;padding-top:23px;border-top:1px solid var(--line);color:var(--muted)}.update-note strong{color:var(--ink);font-weight:500}.hub-how>.fine-print{font-size:10px;margin-top:9px}.download-option>summary{font-size:17px;font-family:var(--serif);font-weight:700;cursor:pointer}.download-option[open]>summary{margin-bottom:20px}@media(max-width:767px){.update-note{font-size:11px}.download-option>summary{font-size:16px}}

/* Light surfaces and purpose-based filters. */
.site-header{background:rgba(255,255,255,.84);backdrop-filter:blur(18px) saturate(115%);-webkit-backdrop-filter:blur(18px) saturate(115%);border-bottom-color:rgba(224,225,231,.75)}
.hub-hero,.shop-head{position:relative;isolation:isolate}
.minimal-tool,.card{position:relative;background:#fff;border-color:#e4e5eb;box-shadow:inset 0 1px 0 #fff;transition:border-color .3s,box-shadow .3s}
.hub-next{background:#f8f8f9;border:1px solid #ebebee}
.hub-prices article:first-child{background:#f7f7f8}
.hub-prices article:last-child{background:#fff}
.contribution-choice.selected{background:#f5f5f7;border-color:#aaacb7}
.hub-about{position:relative;isolation:isolate}
.btn:not(.secondary):not(.text){background:#2e2f34;border-color:#35363d;box-shadow:inset 0 1px 0 #ffffff18;transition:box-shadow .25s,filter .25s,transform .25s}
.card-keywords{display:flex;flex-wrap:wrap;gap:0;font-size:11px;color:#777981}
.card-keywords span+span::before{content:'·';margin:0 10px;color:#b0b1b8}
.filters{gap:28px;flex-wrap:wrap;border-bottom:1px solid var(--line);margin:0 0 28px}
.filter{position:relative;min-height:46px;padding:8px 0 14px;border:0;border-radius:0;background:transparent;color:#72747c;font-size:13px;white-space:nowrap;transition:color .2s}
.filter::after{content:'';position:absolute;height:2px;left:0;right:0;bottom:-1px;background:#52545d;transform:scaleX(0);transform-origin:center;transition:transform .28s cubic-bezier(.22,1,.36,1)}
.filter.active{background:transparent;color:var(--ink);font-weight:500}
.filter.active::after{transform:scaleX(1)}
.filter:focus-visible{outline-offset:0}
.search input{background:#fff;transition:border-color .2s,box-shadow .2s}
.search input:focus{border-color:#aaadba;box-shadow:0 0 0 3px #d8dce92b}
@media(hover:hover){
 .minimal-tool:hover,.card:hover{border-color:#c9ccd7;box-shadow:0 8px 28px #282f4410,inset 0 1px 0 #fff}
 .btn:not(.secondary):not(.text):hover{filter:brightness(1.12);box-shadow:0 4px 12px #292b3b20,inset 0 1px 0 #ffffff25}
 .filter:hover{color:#27272a}
 .filter:not(.active):hover::after{transform:scaleX(.45);opacity:.4}
 .hub-social>span:last-child{transition:transform .25s}
 .hub-social:hover>span:last-child{transform:translate(2px,-2px)}
}
@media(max-width:767px){
 .filters{gap:24px;margin-bottom:22px}.filter{font-size:12px;min-height:44px}
 .card-keywords{font-size:10px}.card-keywords span+span::before{margin:0 8px}
}
@media(prefers-reduced-transparency:reduce){.site-header{background:#fff;backdrop-filter:none;-webkit-backdrop-filter:none}}
@media(forced-colors:active){.hub-hero h1 strong,.shop-head h1{background:none;color:CanvasText}.filter.active{outline:2px solid Highlight}.btn:not(.secondary):not(.text){background:ButtonFace;color:ButtonText}}

/* Water ripple: monochrome rings, visible around the typography's quiet centre. */
.hub-hero{max-width:none;overflow:hidden}.hero-copy{position:relative;max-width:820px;margin:auto}
.hub-hero h1 strong,.shop-head h1{color:var(--ink);background:none;-webkit-text-fill-color:currentColor}
.ripple-field{position:absolute;z-index:-1;inset:0;overflow:hidden;pointer-events:none;mask-image:radial-gradient(ellipse 34% 32% at 50% 48%,transparent 35%,#000 100%);-webkit-mask-image:radial-gradient(ellipse 34% 32% at 50% 48%,transparent 35%,#000 100%)}
.ripple-ring{position:absolute;left:50%;top:48%;width:1000px;height:1000px;border:1px solid rgba(87,94,112,.20);border-radius:50%;box-shadow:0 2px 4px rgba(70,77,97,.025),inset 0 1px 2px rgba(70,77,97,.025);transform:translate(-50%,-50%);animation:water-ripple 18s linear infinite;animation-delay:var(--ripple-delay);animation-play-state:paused}
.ripple-active .ripple-ring{animation-play-state:running}.motion-paused .ripple-ring{animation-play-state:paused}
@keyframes water-ripple{0%{transform:translate(-50%,-50%) scale(.16);opacity:0}18%{opacity:.68}70%{opacity:.42}100%{transform:translate(-50%,-50%) scale(1.2);opacity:0}}
.shop-head{overflow:hidden}.shop-head .ripple-field{left:0;mask-image:linear-gradient(90deg,transparent 0%,#000 30%,#000 96%,transparent 100%);-webkit-mask-image:linear-gradient(90deg,transparent 0%,#000 30%,#000 96%,transparent 100%);opacity:.62}.shop-head .ripple-ring{left:83%;top:95%;width:760px;height:760px}
.tap-ripple-surface{position:fixed;z-index:21;pointer-events:none;overflow:hidden;contain:strict}
.tap-ripple-wave{position:absolute;border-radius:50%;border:1px solid #939aaa70;background:#a4adbf15;transform:translate(-50%,-50%) scale(0);animation:tap-water .85s cubic-bezier(.16,1,.3,1) forwards}
@keyframes tap-water{0%{transform:translate(-50%,-50%) scale(0);opacity:.8}100%{transform:translate(-50%,-50%) scale(1);opacity:0}}
@media(max-width:767px){.ripple-ring{width:700px;height:700px}.ripple-field{mask-image:radial-gradient(ellipse 48% 35% at 50% 48%,transparent 35%,#000 100%);-webkit-mask-image:radial-gradient(ellipse 48% 35% at 50% 48%,transparent 35%,#000 100%)}.shop-head .ripple-field{left:0;mask-image:linear-gradient(90deg,transparent 0%,#000 34%,#000 96%,transparent 100%);-webkit-mask-image:linear-gradient(90deg,transparent 0%,#000 34%,#000 96%,transparent 100%);opacity:.5}.shop-head .ripple-ring{left:80%;width:540px;height:540px}}
@media(prefers-reduced-motion:reduce){.ripple-ring{animation:none;transform:translate(-50%,-50%) scale(.68);opacity:.18}.ripple-ring:nth-child(2){transform:translate(-50%,-50%) scale(.86)}.ripple-ring:nth-child(n+3),.tap-ripple-surface{display:none}}
@media(forced-colors:active){.ripple-field,.tap-ripple-surface{display:none}}