:root{--blue:#2961ad;--ink:#17253a;--muted:#768296;--line:#e8ecf2;--paper:#f7f9fc;--nav:#152d4f;--radius:14px;font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--ink);font-synthesis:none}*{box-sizing:border-box}body{margin:0;background:var(--paper);font-size:14px}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #8db9ef;outline-offset:4px}[hidden]{display:none!important}.sidebar{width:220px;position:fixed;inset:0 auto 0 0;padding:32px 22px;background:#fff;border-right:1px solid 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#28549a0c;padding:22px;width:216px;height:166px}.visual-card-back{left:22px;top:9px;transform:rotate(-10deg);background:#f9fbff;color:#8fadd3}.visual-card-back>div{height:5px;margin-top:12px;background:#e3ebf6;border-radius:6px;width:120px}.visual-card-front{right:0;top:56px;transform:rotate(5deg)}.visual-icon{display:flex;align-items:center;justify-content:center;width:33px;height:33px;border-radius:9px;background:#eef3fa;font-size:24px}.visual-icon.blue{color:var(--blue);background:#eaf1fd}.visual-card strong{display:block;font-size:12px;margin:11px 0 12px}.visual-line{width:147px;height:4px;background:#e4ebf6;border-radius:4px;margin-top:7px}.visual-line.short{width:99px}.visual-ready{position:absolute;bottom:17px;font-size:8px;color:#8497ac}.visual-ready i{display:inline-block;width:4px;height:4px;border-radius:50%;background:#70a38b;margin-right:5px}.visual-float{position:absolute;right:-32px;top:25px;font-size:9px;font-family:monospace;color:#7289a8;background:#ffffffdc;padding:9px 12px;border-radius:7px;border:1px solid #dbe5f3;transform:rotate(5deg)}.visual-float>span{margin-left:15px;color:#7c9dc4}.login-panel{display:grid;grid-template-columns:1fr 1fr;gap:45px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px 38px;margin:29px 0 65px}.section-kicker{font-size:10px;letter-spacing:1px;color:#8e9bb0}h2{font-size:21px;letter-spacing:.3px;font-weight:600;margin:12px 0}.login-copy>p{font-size:12px;line-height:1.9;color:#8290a2;margin:10px 0 19px}.privacy-note{font-size:10px;color:#93a0b2}.privacy-note>span{margin-right:5px;color:#7b9db2}form{align-self:center}form>label{display:block;font-size:11px;color:#687b96;margin-bottom:10px}.key-field{display:flex;border:1px solid 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#e1e7f0;border-radius:15px;padding:28px 31px;color:var(--ink);box-shadow:0 28px 100px #10274530}dialog::backdrop{background:#162d4d50;backdrop-filter:blur(3px)}.dialog-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:17px}.icon-button{border:0;background:#f3f6fb;border-radius:50%;width:28px;height:28px;font-size:19px;color:#8a9bb1}.detail-description{color:#7f8ea3;line-height:1.9;font-size:13px}.detail-meta{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:17px;background:#f6f8fc;border-radius:9px;font-size:11px;line-height:1.8;margin:20px 0;color:#7c8da6}.detail-meta strong{display:block;color:#526a8c;font-size:10px;font-weight:500}.detail-version{display:flex;align-items:center;gap:10px;border-bottom:1px solid #edf0f6;padding:16px 0;font-size:12px}.detail-version div{flex:1}.detail-version small{display:block;color:#97a5b9;font-size:10px;margin-top:5px;line-height:1.7}.detail-version button{font-size:10px;gap:12px;min-height:34px}.detail-checksum{overflow-wrap:anywhere;font-family:monospace;font-size:9px!important}.help-steps{padding-left:20px;margin:25px 0}.help-steps li{padding-left:7px;margin-bottom:23px;color:#7a8aa2;font-size:12px;line-height:1.9}.help-steps strong{color:#4d6484;font-size:13px}.help-steps p{margin:6px 0}.code-note{background:#f4f7fb;border:1px solid #e5eaf3;border-radius:9px;padding:18px;font-size:11px;color:#7d8ea7;line-height:1.9}.code-note strong{color:#5b7396;font-weight:550}.code-note pre{overflow:auto;background:#e9eef7;padding:13px;color:#617c9f;border-radius:6px;font-size:10px;line-height:2}.muted{font-size:10px;color:#98a6ba;line-height:1.9}.toast{position:fixed;bottom:30px;left:calc(50% + 90px);transform:translateX(-50%);background:#25456e;color:#fff;padding:13px 20px;border-radius:9px;font-size:12px;box-shadow:0 8px 30px #10284626;z-index:10}@media(min-width:1500px){main{padding-top:43px}.hero{min-height:315px;padding-top:40px}.hero-visual{margin-right:80px}}@media(max-width:1150px){.sidebar{width:190px;padding-left:17px;padding-right:17px}.workspace{margin-left:190px}main{padding:28px 29px 0}.topbar{padding:0 29px}.skill-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.hero-visual{width:270px;margin-right:5px;transform:scale(.9);transform-origin:right center}.login-panel{padding:29px;gap:30px}}@media(max-width:820px){.sidebar{width:77px;padding:25px 17px}.brand>span:last-child,.nav-caption,.nav-arrow,.sidebar-note,.sidebar-bottom{display:none}.brand-mark{width:40px}.nav-item{font-size:0;padding:12px;justify-content:center;margin-top:20px}.nav-item>span:first-child{font-size:20px}.workspace{margin-left:77px}.hero{padding:29px;min-height:280px}.hero-visual{width:230px;transform:scale(.8);margin-right:-5px}.login-panel{grid-template-columns:1fr;gap:24px}.login-copy>p br{display:none}.privacy-note{font-size:10px}.catalog-toolbar{flex-direction:column;align-items:stretch}.search-field{min-width:0}.install-banner{flex-wrap:wrap;gap:14px}.install-banner>div:nth-child(2){min-width:180px}.install-banner .text-button{margin-left:auto}.top-actions{gap:7px}.separator{margin:0 3px}.breadcrumb{font-size:11px}.topbar{height:66px}.toast{left:calc(50% + 38px)}footer>span:last-child{display:none}}@media(max-width:560px){.sidebar{display:none}.workspace{margin-left:0}.topbar{padding:0 21px;height:60px}.breadcrumb{font-size:10px}.breadcrumb span{margin:0 7px}.top-actions{font-size:10px}.top-actions .text-button{font-size:10px}main{padding:21px 18px 0}.hero{padding:27px;min-height:260px}.hero-visual{display:none}h1{font-size:34px}.hero-copy>p{font-size:11px}.hero-tags{gap:11px}.hero-tags span{font-size:8px}.login-panel{margin:20px 0 35px;padding:25px}.login-panel h2{font-size:19px}.skill-grid{grid-template-columns:1fr}.skill-card{padding:22px;min-height:220px}.card-description{min-height:auto}.catalog-heading h2{font-size:19px}.catalog-toolbar{margin-top:20px}.category-tabs{gap:4px}.category-tabs button{padding:8px 10px}.install-banner{padding:19px}.install-symbol{display:none}.install-banner>div:nth-child(2){min-width:100%}.install-banner .text-button{margin-left:0}footer{margin-top:35px}.toast{left:50%;width:max-content;max-width:90%}dialog{padding:23px}.detail-meta{grid-template-columns:1fr}.detail-version{align-items:flex-start}.detail-version button{margin-top:3px}}@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

.subcategory-tabs { margin: 12px 0 20px; padding-top: 10px; border-top: 1px solid var(--border, #e5e7eb); }
.category-tabs { flex-wrap: wrap; }

/* Category navigation: second level on the left, platforms nested below it. */
.sidebar{width:260px}.workspace{margin-left:260px}.catalog-connected .sidebar{overflow-y:auto;gap:0}.catalog-connected .sidebar-note,.catalog-connected .sidebar-bottom{display:none}.classification-panel{margin-top:25px;min-height:0;flex:1;overflow-y:auto;padding-right:5px}.classification-panel h2{font-size:13px;margin:0 9px 5px}.classification-panel>p{font-size:11px;color:var(--muted);margin:0 9px 17px}.category-group-title{font-size:11px;color:var(--muted);margin:20px 9px 7px}.category-node{display:block;width:100%;border:0;text-align:left;background:transparent;padding:10px 11px;border-radius:7px;color:#52647d;font-size:12px;line-height:1.5}.category-node:hover{background:#f0f4fa}.category-node.selected{background:#eaf1fe;color:#245ca7;font-weight:650}.platform-children{margin:3px 0 9px 16px;padding-left:8px;border-left:1px solid #dbe4f2}.level-three{font-size:11px;padding:8px}.classification-toggle,.classification-overlay{display:none}.category-label{overflow-wrap:anywhere;line-height:1.6;max-width:70%}.skill-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
@media(max-width:1250px){.skill-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:820px){.workspace{margin-left:0}.sidebar{display:none}.classification-toggle{display:inline-flex;align-self:flex-start;white-space:nowrap}.catalog-connected .sidebar{display:flex;position:fixed;inset:0 auto 0 0;width:min(290px,85vw);z-index:40;background:white;transform:translateX(-105%);padding:25px 18px;box-shadow:10px 0 35px #152d4f22}.categories-open .sidebar{transform:translateX(0)}.categories-open .classification-overlay{display:block;position:fixed;inset:0;background:#152d4f66;border:0;z-index:35}.catalog-connected .brand>span:last-child,.catalog-connected .sidebar .nav-caption{display:block}.catalog-connected .sidebar .nav-item{font-size:13px;justify-content:flex-start;margin-top:0;padding:13px 14px}.catalog-connected .sidebar .nav-arrow{display:block}.catalog-connected .sidebar .nav-caption{margin-top:27px}.classification-panel{margin-top:15px}.catalog-toolbar{align-items:stretch}.category-tabs{min-width:0}.toast{left:50%}}
@media(max-width:560px){.skill-grid{grid-template-columns:1fr}.category-label{max-width:65%}}

/* Use the approved Yuanchen AI wordmark at its original aspect ratio. */
.yuanchen-brand{display:flex;flex-direction:column;align-items:flex-start;gap:2px;letter-spacing:0}.yuanchen-logo{position:relative;display:block;width:200px;max-width:100%;height:62px;overflow:hidden}.yuanchen-logo img{position:absolute;display:block;width:200px;max-width:none;height:auto;left:50%;top:50%;transform:translate(-50%,-50%)}.yuanchen-brand-context{font-size:12px;line-height:1.6;color:#52647d;letter-spacing:1px}.yuanchen-brand+.nav-caption{margin-top:25px}.hero-copy>p{max-width:470px}
@media(max-width:820px){.catalog-connected .sidebar .yuanchen-brand{font-size:inherit}.catalog-connected .sidebar .yuanchen-logo{display:block}.catalog-connected .sidebar .yuanchen-brand+.nav-caption{margin-top:23px}}
@media(max-width:560px){.catalog-heading h2{font-size:18px}.topbar{gap:8px}.top-actions{flex-shrink:0}.breadcrumb{min-width:0}}

.publish-form{display:grid;grid-template-columns:1fr 1fr;gap:14px}.publish-form label,.code-editor-dialog label{display:flex;flex-direction:column;gap:6px;font-size:12px;color:#52647d}.publish-form input,.publish-form textarea,.code-editor-dialog input,.code-editor-dialog select,.code-editor-dialog textarea{width:100%;border:1px solid #d8e1ee;border-radius:7px;padding:10px;color:#17253a;background:#fff;font:inherit}.publish-wide{grid-column:1/-1}.code-editor-dialog{width:min(1000px,92vw)}.code-editor-dialog textarea{display:block;font-family:ui-monospace,monospace;font-size:12px;line-height:1.5;resize:vertical;margin:10px 0}.code-actions{display:flex;align-items:center;gap:15px;margin-top:14px}.catalog-heading{gap:10px;flex-wrap:wrap}@media(max-width:560px){.publish-form{grid-template-columns:1fr}.publish-wide{grid-column:auto}}

.manage-filters{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:14px 0}.manage-filters label{display:flex;flex-direction:column;gap:6px;color:#52647d;font-size:12px}.manage-filters select{width:100%;min-width:0;border:1px solid #d8e1ee;border-radius:7px;padding:10px;background:#fff;color:#17253a;font:inherit}.manage-filters select:disabled{color:#9aa5b5;background:#f7f9fc}@media(max-width:560px){.manage-filters{grid-template-columns:1fr}}
.share-actions{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin:14px 0}.share-actions button{min-height:36px}.share-actions span{flex-basis:100%}
.skill-card{text-align:left;width:100%;font:inherit}
.danger-button{color:#b44c45;border-color:#e8c7c3}.danger-button:hover{background:#fff4f2}