/* Meta × 化学：只用 shared-nav.css 的颜色与字体变量，深色模式自动生效。 */
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--cr-nav-height,64px) + 16px)}
body{margin:0;background:var(--paper);color:var(--ink);font:14px/1.7 var(--font-sans)}
button,input,select,textarea{font:inherit;color:inherit}
a{color:var(--accent-text)}
[hidden]{display:none!important}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible,.mx-drop:focus-visible{outline:3px solid var(--gold);outline-offset:2px}
.skip{position:fixed;top:-100px;left:16px;background:var(--accent);color:var(--accent-ink);padding:10px 14px;z-index:100}
.skip:focus{top:8px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
main{max-width:1280px;margin:0 auto;padding:0 40px}
.eyebrow{font-size:11px;letter-spacing:2px;font-weight:700;color:var(--muted);margin:0 0 12px}
.muted{color:var(--muted)}.small{font-size:12px}
code{font-family:var(--font-mono);font-size:12.5px;background:var(--surface-2);padding:1px 5px;border-radius:3px}

.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:40px;padding:8px 16px;border:1px solid var(--line-strong);border-radius:4px;background:var(--surface);color:var(--ink);text-decoration:none;cursor:pointer;font-size:13px;font-weight:500;transition:background .15s,border-color .15s}
.button:hover{background:var(--surface-2)}
.button.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);font-weight:600}
.button.primary:hover{background:var(--accent-hover)}
.button.ghost{background:transparent}
.button.small{min-height:30px;padding:4px 11px;font-size:12px}
.button:disabled{opacity:.5;cursor:default}
.text-button{border:0;background:none;color:var(--accent-text);cursor:pointer;font-size:12.5px;padding:6px 4px;font-weight:600;white-space:nowrap}
.text-button:hover{text-decoration:underline;text-underline-offset:3px}

/* hero */
.mx-hero{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center;padding:60px 0 40px}
.mx-hero h1{font-size:clamp(30px,3.3vw,46px);line-height:1.32;letter-spacing:-1.2px;font-weight:600;margin:0 0 20px}
.mx-hero h1 em{font-style:normal;font-family:var(--font-serif);font-weight:500;color:var(--accent-2)}
.lead{font-size:15px;line-height:1.95;color:var(--muted);margin:0 0 24px;max-width:62ch}
.actions{display:flex;flex-wrap:wrap;gap:10px}
.fine{font-size:12px;color:var(--muted);margin:18px 0 0;max-width:60ch}
.mx-stack{margin:0;padding:22px 22px 18px;border:1px solid var(--line);background:var(--surface);border-radius:6px}
.mx-stack figcaption{font-size:11.5px;letter-spacing:1.5px;font-weight:700;color:var(--muted);margin-bottom:12px}
.mx-stack ol{list-style:none;margin:0;padding:0;display:grid;gap:10px;counter-reset:mx}
.mx-stack li{position:relative;display:grid;grid-template-columns:132px 1fr;gap:2px 16px;padding:12px 14px 12px 16px;border:1px solid var(--line);border-radius:4px;background:var(--paper);--mk:var(--accent-2)}
.mx-stack li:nth-child(2){--mk:var(--info)}
.mx-stack li:nth-child(3){--mk:var(--gold)}
.mx-stack li:nth-child(4){--mk:var(--violet)}
.mx-k{grid-row:1/4;font:600 12px/1.45 var(--font-mono);color:var(--ink-2);padding-top:2px}
.mx-k::before{content:"";display:inline-block;width:7px;height:7px;border-radius:2px;background:var(--mk);margin-right:7px;vertical-align:1px}
.mx-stack b{font-size:14px}
.mx-stack small{font-size:12px;line-height:1.65;color:var(--muted)}
.mx-stack a{font-size:12px;font-weight:600;text-decoration:none;justify-self:start}
.mx-stack a:hover{text-decoration:underline}
.mx-facts{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:22px 0}
.mx-facts div{padding:0 24px;border-right:1px solid var(--line);display:flex;flex-direction:column}
.mx-facts div:first-child{padding-left:0}.mx-facts div:last-child{border:0}
.mx-facts strong{font:400 30px/1.25 var(--font-num)}
.mx-facts span{font-size:12px;color:var(--muted);margin-top:4px}

/* tools */
.mx-tool,.mx-open{padding:52px 0 8px}
.mx-head{max-width:78ch;margin-bottom:20px}
.mx-head h2{margin:0 0 8px;line-height:1.35;font-size:26px;letter-spacing:-.5px;font-weight:600}
.mx-head .eyebrow{margin-bottom:6px}
.mx-head p.muted{margin:0;font-size:13.5px}
.mx-split{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.mx-gen{grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr)}
.mx-card{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:20px 22px;min-width:0}
.mx-row{display:flex;gap:12px;align-items:flex-end;margin:14px 0 0}
.mx-row.wrap{flex-wrap:wrap}
.mx-row label,.mx-fields label,.mx-wide{display:grid;gap:5px;font-size:12px;color:var(--muted)}
.mx-wide{margin-top:14px}
input[type=text],input[type=number],input[type=search],select{background:var(--paper);border:1px solid var(--line-strong);border-radius:4px;padding:8px 10px;min-height:38px;color:var(--ink);font-size:13.5px;min-width:0}
input[type=number]{width:88px}
#u-smiles{font-family:var(--font-mono);font-size:13px}
.mx-note{font-size:12px;color:var(--muted);margin:14px 0 0}
.mx-drop{display:grid;place-items:center;min-height:220px;border:1.5px dashed var(--line-strong);border-radius:6px;background:var(--paper);cursor:pointer;text-align:center;padding:14px;transition:border-color .15s,background .15s}
.mx-drop:hover,.mx-drop[data-over=true]{border-color:var(--accent-2);background:var(--accent-soft)}
.mx-drop span{display:grid;gap:4px}
.mx-drop small{font-size:12px;color:var(--muted)}
.mx-drop img{max-width:100%;max-height:300px;border-radius:3px;background:#fff}
.mx-out{display:flex;flex-direction:column;gap:12px}
.mx-mols{display:grid;gap:10px}
.mx-mol{display:grid;grid-template-columns:150px minmax(0,1fr);gap:14px;padding:12px;border:1px solid var(--line);border-radius:5px;background:var(--paper)}
.mx-mol .art{display:grid;place-items:center;min-height:100px;border-radius:3px;background:var(--surface)}
.mx-mol .art svg{max-width:100%;height:auto}
:is(.mx-mol .art,.mx-art) path[style*="stroke:#000000"]{stroke:var(--ink)!important}
:is(.mx-mol .art,.mx-art) :is(path,text)[style*="fill:#000000"]{fill:var(--ink)!important}
:is(.mx-mol .art,.mx-art) rect[style*="fill:#FFFFFF"],:is(.mx-mol .art,.mx-art) rect[style*="fill:#ffffff"]{fill:transparent!important}
.mx-mol h4{margin:0 0 2px;font-size:14px}
.mx-mol .smi{font:12.5px/1.5 var(--font-mono);word-break:break-all;color:var(--ink-2);margin:2px 0 6px}
.mx-mol .why{font-size:12px;color:var(--muted);margin:4px 0 0}
.mx-mol .btns{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.tag{display:inline-block;font-size:11.5px;padding:1px 7px;border-radius:3px;background:var(--surface-2);color:var(--muted);white-space:nowrap;margin:1px 4px 1px 0}
.tag.ok{background:color-mix(in srgb,var(--ok) 14%,transparent);color:var(--ok)}
.tag.bad{background:color-mix(in srgb,var(--danger) 13%,transparent);color:var(--danger)}
.mx-err{padding:10px 12px;border:1px solid color-mix(in srgb,var(--danger) 45%,transparent);border-radius:4px;background:color-mix(in srgb,var(--danger) 8%,transparent);font-size:13px}
.mx-err .button{margin-top:8px}

.mx-mol-in{display:grid;grid-template-columns:170px minmax(0,1fr);gap:16px;align-items:start}
.mx-art{display:grid;place-items:center;height:130px;border:1px solid var(--line);border-radius:4px;background:var(--paper);overflow:hidden}
.mx-art svg{max-width:100%;height:auto}
.mx-fields{display:grid;gap:10px}
.mx-check{margin:0;font-size:12px;color:var(--muted);min-height:1.7em}
.mx-check[data-bad=true]{color:var(--danger)}
.mx-checkbox{display:flex;gap:8px;align-items:flex-start;font-size:12.5px;color:var(--ink-2);margin:14px 0 0;line-height:1.6}
.mx-checkbox input{margin-top:4px}
.mx-run{margin:16px 0 0;padding:14px 0 0 20px;border-top:1px solid var(--line);font-size:12.5px;color:var(--ink-2);display:grid;gap:6px}
.mx-run code{word-break:break-all}
.mx-code{min-width:0;border:1px solid var(--line);border-radius:6px;background:var(--surface-2);display:flex;flex-direction:column;max-height:640px}
.mx-code-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:6px 10px 6px 14px;border-bottom:1px solid var(--line);font:12px var(--font-mono);color:var(--muted)}
.mx-code pre{margin:0;padding:14px 16px;overflow:auto;flex:1;line-height:1.55}
.mx-code pre code{background:none;padding:0;font-size:12.3px;line-height:1.6;color:var(--ink);white-space:pre}
/* desktop: run on this computer */
.mx-desk-note{margin:14px 0 0;font-size:13px;color:var(--muted)}
.mx-local{margin-top:18px;padding:20px 22px;border:1px solid var(--line-strong);border-radius:6px;background:var(--surface)}
.mx-local-head h3{margin:0 0 4px;font-size:16px}
.mx-local-head p{margin:0 0 12px;max-width:80ch}
.mx-env{display:flex;flex-wrap:wrap;gap:6px;min-height:28px;align-items:center;font-size:12.5px}
.chip{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:99px;border:1px solid var(--line);background:var(--paper);color:var(--ink-2)}
.chip.ok{border-color:color-mix(in srgb,var(--ok) 45%,transparent);color:var(--ok)}
.chip.bad{border-color:color-mix(in srgb,var(--danger) 45%,transparent);color:var(--danger)}
.chip.warn{border-color:color-mix(in srgb,var(--warn) 50%,transparent);color:var(--warn)}
.mx-py{flex:1;min-width:240px}
.mx-py select{width:100%}
.mx-pypath{margin-top:12px;font-size:12.5px}
.mx-pypath summary{cursor:pointer;color:var(--accent-text);font-weight:600}
.mx-wide-in{flex:1;display:grid;gap:5px;font-size:12px;color:var(--muted)}
.mx-wide-in input{font-family:var(--font-mono);font-size:12.5px}
.mx-help ol{margin:14px 0 0;padding-left:20px;display:grid;gap:10px;font-size:13px;color:var(--ink-2)}
.mx-help p{margin:8px 0 0}
.mx-cmd{display:flex;align-items:center;gap:8px;margin-top:5px;padding:6px 8px 6px 10px;border:1px solid var(--line);border-radius:4px;background:var(--surface-2)}
.mx-cmd code{flex:1;background:none;padding:0;word-break:break-all}
.mx-log{margin:14px 0 0;max-height:300px;overflow:auto;padding:12px 14px;border-radius:5px;background:var(--surface-2);border:1px solid var(--line);font:12px/1.55 var(--font-mono);color:var(--ink-2);white-space:pre-wrap;word-break:break-all}
.mx-online .mx-row{margin-top:10px}
.mx-fine{margin:12px 0 0;font-size:12px;line-height:1.7;color:var(--muted);max-width:90ch}
.mx-res{margin-top:14px;padding:14px 16px;border:1px solid color-mix(in srgb,var(--ok) 40%,transparent);border-radius:5px;background:color-mix(in srgb,var(--ok) 6%,transparent)}
.mx-res h4{margin:0 0 8px;font-size:14px}
.mx-res p{margin:6px 0 0;font-size:13px}
.mx-res .btns{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.mx-res-table{border-collapse:collapse;font-size:13px}
.mx-res-table th,.mx-res-table td{padding:5px 14px 5px 0;text-align:left;border-bottom:1px solid var(--line)}
.mx-res-table th{font-size:12px;color:var(--muted);font-weight:600}
.mx-res-table td:not(:first-child){font-family:var(--font-num);font-size:14px}
.mx-local .mx-err{margin-top:14px}
.mx-tasks{margin-top:16px;border:1px solid var(--line);border-radius:6px;background:var(--surface);padding:12px 18px}
.mx-tasks summary{cursor:pointer;font-weight:600;font-size:13px}
.mx-table{overflow-x:auto;margin-top:10px}
.mx-table table{border-collapse:collapse;width:100%;font-size:12.5px}
.mx-table th,.mx-table td{text-align:left;padding:7px 10px;border-bottom:1px solid var(--line);vertical-align:top}
.mx-table th{font-size:12px;color:var(--muted);font-weight:600}

/* catalogue */
.mx-filter{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin-bottom:16px}
.mx-filter button{border:1px solid var(--line-strong);background:var(--surface);border-radius:99px;padding:5px 13px;cursor:pointer;font-size:12.5px;color:var(--ink-2)}
.mx-filter button[aria-pressed=true]{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.mx-search{margin-left:auto}
.mx-search input{width:240px}
.mx-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.mx-item{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:16px 18px}
.mx-item h3{margin:4px 0 6px;font-size:15.5px;line-height:1.4}
.mx-item>p{margin:0 0 8px;font-size:12.8px;line-height:1.75;color:var(--ink-2)}
.mx-meta{display:flex;flex-wrap:wrap;align-items:center;gap:4px 6px;font-size:12px;color:var(--muted)!important;margin:0!important}
.mx-tag{display:inline-block;font-size:11.5px;padding:1px 7px;border-radius:3px;background:var(--surface-2);color:var(--ink-2)}
.mx-tag.used{background:var(--gold-soft);color:var(--ink-2);border:1px solid color-mix(in srgb,var(--gold) 55%,transparent)}
.mx-item[data-kind=data] .mx-tag:first-child{background:color-mix(in srgb,var(--info) 14%,transparent)}
.mx-item[data-kind=llm] .mx-tag:first-child{background:color-mix(in srgb,var(--violet) 15%,transparent)}
.mx-item[data-kind=tool] .mx-tag:first-child{background:color-mix(in srgb,var(--gold) 16%,transparent)}
.mx-item[data-kind=model] .mx-tag:first-child{background:color-mix(in srgb,var(--ok) 14%,transparent)}
.mx-lic{font-size:12px!important;color:var(--muted)!important}
.mx-links{margin-top:auto!important;display:flex;flex-wrap:wrap;gap:4px 14px;font-size:12.5px;font-weight:600}
.mx-links a{text-decoration:none}
.mx-links a:hover{text-decoration:underline}
.mx-empty{color:var(--muted);font-size:13px}

/* live */
.mx-live{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:28px;align-items:start;margin:48px 0 32px;padding:24px 0;border-top:1px solid var(--line)}
.mx-live h2{margin:0 0 6px;font-size:20px;font-weight:600}
.mx-releases{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.mx-releases li{display:flex;justify-content:space-between;gap:16px;padding:9px 12px;border:1px solid var(--line);border-radius:4px;background:var(--surface);font-size:13px}
.mx-releases li a{min-width:0;overflow-wrap:anywhere;font-family:var(--font-mono);font-size:12.5px;text-decoration:none}
.mx-releases li span{color:var(--muted);white-space:nowrap;font-size:12px}
.mx-releases li span:first-child{min-width:0;white-space:normal} /* 读不到 GitHub 时的那句说明（被限流时最常见）要能换行，否则手机上横向滚动 */
.mx-releases li:has(> span:first-child){flex-wrap:wrap}

.mx-foot{display:flex;gap:30px;justify-content:space-between;padding:20px 0 40px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}
.mx-foot strong{color:var(--ink);font-size:14px;white-space:nowrap}
.mx-foot p{margin:0;max-width:640px}
.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,12px);background:var(--accent);color:var(--accent-ink);padding:10px 18px;border-radius:4px;font-size:13px;opacity:0;pointer-events:none;transition:.2s;z-index:95;max-width:90vw}
.toast[data-show=true]{opacity:1;transform:translate(-50%,0)}

@media(max-width:1050px){
  main{padding:0 28px}
  .mx-hero{grid-template-columns:1fr;gap:32px;padding-top:44px}
  .mx-split,.mx-gen{grid-template-columns:minmax(0,1fr)}
  .mx-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .mx-live{grid-template-columns:minmax(0,1fr);gap:14px} /* minmax：一个很长的版本名不会把整栏撑出屏幕 */
}
@media(max-width:720px){
  main{padding:0 16px}
  .mx-stack li{grid-template-columns:1fr}
  .mx-k{grid-row:auto}
  .mx-facts{grid-template-columns:repeat(2,1fr);gap:16px 0}
  .mx-facts div{padding:0 14px}
  .mx-facts div:nth-child(2){border:0}
  .mx-facts div:nth-child(3){padding-left:0}
  .mx-grid{grid-template-columns:minmax(0,1fr)}
  .mx-mol,.mx-mol-in{grid-template-columns:minmax(0,1fr)}
  .mx-search{margin-left:0;width:100%}
  .mx-search input{width:100%}
  .mx-foot{flex-direction:column;gap:8px}
  .mx-head h2{font-size:22px}
}