/* Open-source details reuse the site's typography, theme state and neutral palette. */
.bb-project-shell {
  --project-bg: #ffffff;
  --project-raised: #f5f5f5;
  --project-border: #e5e5e5;
  --project-ink: #262626;
  --project-secondary: #525252;
  --project-muted: #737373;
  --project-button: #262626;
  --project-button-ink: #f5f5f5;
  width: 100%; min-width: 0; color: var(--project-ink);
}
.dark .bb-project-shell {
  --project-bg: var(--bb-surface);
  --project-raised: var(--bb-raised);
  --project-border: var(--bb-border);
  --project-ink: var(--bb-text);
  --project-secondary: var(--bb-text-secondary);
  --project-muted: var(--bb-text-muted);
  --project-button: var(--bb-text);
  --project-button-ink: var(--bb-surface);
}
.bb-project-shell *, .bb-project-shell *::before, .bb-project-shell *::after { box-sizing: border-box; }
.bb-project-shell a, .bb-project-shell button { -webkit-tap-highlight-color: transparent; }
.bb-project-shell :is(a,button,input,textarea):focus-visible { outline: 2px solid var(--project-muted); outline-offset: 4px; }
.bb-project-header { padding-top: 10px; scroll-margin-top:95px; }
.bb-project-repo { display:flex; align-items:center; flex-wrap:wrap; gap:10px; font-size:14px; margin-bottom:18px; overflow-wrap:anywhere; }
.bb-project-repo > i, .bb-project-panel-heading i, .bb-project-button i { display:inline-block; width:18px; height:18px; flex-shrink:0; }
.bb-project-repo a { color:var(--project-secondary); }
.bb-project-repo a strong { color:var(--project-ink); font-weight:600; }
.bb-project-repo a span { color:var(--project-muted); margin:0 4px; }
.bb-project-header h1 { font-family:inherit; font-size:clamp(22px,2.3vw,32px); font-weight:600; line-height:1.45; letter-spacing:-.025em; margin:0 0 12px; overflow-wrap:anywhere; }
.bb-project-intro { color:var(--project-secondary); line-height:1.85; font-size:15px; max-width:900px; margin:0; }
.bb-project-header-bottom { display:flex; flex-wrap:wrap; justify-content:space-between; align-items:center; gap:16px; margin:22px 0; }
.bb-project-actions { display:flex; flex-wrap:wrap; gap:8px; min-width:0; }
.bb-project-button { display:inline-flex; align-items:center; justify-content:center; gap:7px; border:1px solid var(--project-border); border-radius:10px; padding:9px 15px; min-height:40px; color:var(--project-ink); background:var(--project-bg); font-size:13px; font-weight:500; line-height:1.5; text-align:center; text-decoration:none; max-width:100%; overflow-wrap:anywhere; cursor:pointer; }
.bb-project-button:hover { background:var(--project-raised); }
.bb-project-primary { background:var(--project-button); color:var(--project-button-ink); border-color:var(--project-button); }
.bb-project-primary:hover { background:var(--project-button); opacity:.86; }
.bb-project-rating-link { display:flex; flex-wrap:wrap; align-items:center; gap:8px; font-size:12px; color:var(--project-muted); }
.bb-project-pill { display:inline-flex; align-items:center; border:1px solid var(--project-border); border-radius:20px; padding:2px 9px; color:var(--project-secondary); font-size:11px; font-weight:400; line-height:1.7; flex-shrink:0; background:transparent; }
.bb-project-nav { display:flex; flex-wrap:wrap; gap:4px 18px; border-bottom:1px solid var(--project-border); margin:0 0 24px; }
.bb-project-nav a { display:inline-flex; align-items:center; gap:6px; min-height:42px; font-size:13px; border-bottom:2px solid transparent; padding:5px 2px; color:var(--project-secondary); }
.bb-project-nav a:first-child, .bb-project-nav a:hover { color:var(--project-ink); border-bottom-color:var(--project-muted); }
.bb-project-nav a span { background:var(--project-raised); border-radius:12px; padding:0 6px; font-size:11px; }
.bb-project-grid { display:grid; grid-template-columns:minmax(0,1fr) 240px; gap:30px; align-items:start; padding-bottom:calc(40px + env(safe-area-inset-bottom)); }
.bb-project-main { min-width:0; display:flex; flex-direction:column; gap:24px; }
.bb-project-panel { min-width:0; border:1px solid var(--project-border); border-radius:16px; overflow:hidden; background:var(--project-bg); scroll-margin-top:95px; }
.bb-project-panel-heading { display:flex; flex-wrap:wrap; justify-content:space-between; align-items:center; gap:10px; padding:14px 22px; border-bottom:1px solid var(--project-border); background:var(--project-raised); font-size:13px; }
.bb-project-panel-heading > span { display:flex; align-items:center; gap:8px; }
.bb-project-panel-heading small { font-size:11px; color:var(--project-muted); }
.bb-project-panel-heading a { font-size:12px; color:var(--project-secondary); }
.bb-project-cover { margin:0; padding:22px 22px 0; }
.bb-project-cover img { width:100%; height:auto; max-height:320px; object-fit:contain; border-radius:10px; background:var(--project-raised); }
.bb-project-readme > .beebee-content { padding:24px; }
.bb-project-readme .content { color:var(--project-secondary); line-height:1.9; font-size:15px; overflow-wrap:anywhere; }
.bb-project-readme .content :is(p,ul,ol) { margin:0 0 18px; }
.bb-project-readme .content h2 { color:var(--project-ink); font-size:20px; font-weight:600; line-height:1.5; margin:30px 0 16px; padding-bottom:10px; border-bottom:1px solid var(--project-border); }
.bb-project-readme .content h3 { color:var(--project-ink); font-size:17px; margin:24px 0 12px; }
.bb-project-readme .content :is(ul,ol) { padding-left:22px; }
.bb-project-readme .content li { margin-bottom:8px; }
.bb-project-readme .content a { color:var(--project-ink); text-decoration:underline; text-underline-offset:3px; }
.bb-project-readme .content :is(img,video,iframe) { max-width:100%; }
.bb-project-readme .content pre { max-width:100%; overflow:auto; }
.bb-project-readme .content table { display:block; max-width:100%; overflow-x:auto; }
.bb-project-section { padding:24px; }
.bb-project-section-heading { display:flex; align-items:center; justify-content:space-between; gap:12px; margin-bottom:18px; }
.bb-project-section h2 { font-size:20px; font-weight:600; margin:3px 0 0; line-height:1.5; }
.bb-project-eyebrow { font-size:10px; letter-spacing:.12em; color:var(--project-muted); }
.bb-project-section > p, .bb-project-version-body p { color:var(--project-secondary); font-size:14px; line-height:1.85; margin-bottom:16px; }
.bb-project-section-icon { display:inline-block; width:28px; height:28px; color:var(--project-muted); }
.bb-project-version-body, .bb-project-section #version_download { scroll-margin-top:100px; }
.bb-project-muted { color:var(--project-muted); font-size:12px; line-height:1.8; }
.bb-project-contribute-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); border:1px solid var(--project-border); border-radius:12px; overflow:hidden; }
.bb-project-contribute-grid > div { padding:17px; min-width:0; }
.bb-project-contribute-grid > div + div { border-left:1px solid var(--project-border); }
.bb-project-step { font-size:11px; color:var(--project-muted); font-variant-numeric:tabular-nums; }
.bb-project-contribute-grid h3 { font-size:14px; font-weight:600; margin:10px 0 8px; }
.bb-project-contribute-grid p { font-size:12px; color:var(--project-muted); line-height:1.8; margin:0 0 10px; }
.bb-project-contribute-grid :is(a,button) { display:inline-flex; align-items:center; min-height:36px; font-size:12px; color:var(--project-ink); text-align:left; }
.bb-project-contribute-footer { display:flex; flex-wrap:wrap; justify-content:space-between; gap:12px; margin-top:16px; font-size:12px; color:var(--project-muted); line-height:1.8; }
.bb-project-contribute-footer a { color:var(--project-secondary); }
.bb-project-sidebar { min-width:0; }
.bb-project-about { padding:0 0 24px; margin-bottom:24px; border-bottom:1px solid var(--project-border); }
.bb-project-about h2 { font-size:15px; font-weight:600; margin:2px 0 14px; }
.bb-project-about > p { font-size:13px; line-height:1.85; color:var(--project-secondary); }
.bb-project-tags { display:flex; flex-wrap:wrap; gap:6px; margin:16px 0; }
.bb-project-tags a { border:1px solid var(--project-border); border-radius:20px; color:var(--project-secondary); font-size:11px; padding:3px 9px; min-height:28px; display:flex; align-items:center; }
.bb-project-about dl { margin:18px 0; font-size:12px; }
.bb-project-about dl > div { display:flex; align-items:baseline; justify-content:space-between; gap:12px; margin:12px 0; }
.bb-project-about dt { color:var(--project-muted); flex-shrink:0; }
.bb-project-about dd { text-align:right; overflow-wrap:anywhere; color:var(--project-secondary); }
.bb-project-sidebar-link { display:flex; align-items:center; flex-wrap:wrap; gap:8px; min-height:36px; font-size:12px; color:var(--project-secondary); }
.bb-project-stars { display:inline-flex; gap:3px; color:var(--project-muted); font-size:17px; line-height:1; }
.bb-project-stars .is-filled { color:var(--project-ink); }
.bb-project-score { display:flex; align-items:center; gap:20px; padding:4px 0 24px; }
.bb-project-score > strong { font-size:40px; font-weight:500; line-height:1; font-variant-numeric:tabular-nums; }
.bb-project-score p { margin:8px 0 0; font-size:12px; color:var(--project-muted); }
.bb-project-review-compose { padding:20px; background:var(--project-raised); border-radius:12px; }
.bb-project-login { display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:16px; }
.bb-project-login h3 { font-size:15px; font-weight:500; margin-bottom:6px; }
.bb-project-login p { font-size:13px; color:var(--project-secondary); line-height:1.8; max-width:440px; }
.bb-project-review-form > label { display:block; font-size:13px; margin:15px 0 8px; }
.bb-project-review-form textarea { display:block; width:100%; min-height:130px; border:1px solid var(--project-border); border-radius:10px; padding:12px; background:var(--project-bg); color:var(--project-ink); font:inherit; font-size:14px; line-height:1.8; resize:vertical; }
.bb-project-review-form textarea::placeholder { color:var(--project-muted); opacity:1; }
.bb-project-star-input { margin:0; padding:0; border:0; }
.bb-project-star-input legend { font-size:13px; margin-bottom:10px; }
.bb-project-star-input legend span { color:var(--project-muted); }
.bb-project-star-input > div { display:flex; align-items:center; flex-wrap:wrap; gap:4px; }
.bb-project-star-input label { position:relative; display:inline-flex; align-items:center; justify-content:center; width:36px; height:36px; cursor:pointer; }
.bb-project-star-input input { position:absolute; opacity:0; width:100%; height:100%; cursor:pointer; }
.bb-project-star-input label > span { font-size:26px; color:var(--project-muted); }
.bb-project-star-input label.is-filled > span { color:var(--project-ink); opacity:1; }
.bb-project-star-input label:focus-within { outline:2px solid var(--project-muted); border-radius:6px; }
.bb-project-star-input button { font-size:12px; min-height:36px; color:var(--project-secondary); padding:0 8px; }
.bb-project-star-input p { font-size:12px; color:var(--project-muted); margin:8px 0; }
.bb-project-form-footer { display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:12px; margin-top:14px; }
.bb-project-form-footer > span { font-size:12px; color:var(--project-muted); }
.bb-project-empty { padding:36px 10px 10px; text-align:center; }
.bb-project-empty > i { display:inline-block; width:26px; height:26px; color:var(--project-muted); margin-bottom:10px; }
.bb-project-empty h3 { font-size:14px; font-weight:500; margin:0 0 8px; }
.bb-project-empty p { color:var(--project-muted); font-size:12px; line-height:1.8; }
.bb-project-comment { border-top:1px solid var(--project-border); padding-top:20px; margin-top:20px; }
.bb-project-comment-meta { display:flex; flex-wrap:wrap; align-items:center; gap:10px; font-size:12px; }
.bb-project-comment-meta time { color:var(--project-muted); }
.bb-project-comment-content { font-size:14px; line-height:1.9; overflow-wrap:anywhere; margin-top:12px; }
.bb-project-comment-content a { text-decoration:underline; }
.bb-project-comment-pages { display:flex; flex-wrap:wrap; gap:12px; margin-top:20px; font-size:13px; }
.bb-project-shell .ai3d-updates-public { margin:0; padding:0; width:100%; }
.bb-project-shell .ai3d-updates-card { background:var(--project-raised); border-color:var(--project-border); }
@media (max-width:1099px) {
  .bb-project-grid { grid-template-columns:minmax(0,1fr); gap:20px; }
  .bb-project-sidebar { display:grid; grid-template-columns:1fr 1fr; gap:24px; }
}
@media (max-width:767px) {
  .bb-project-header { padding-top:4px; }
  .bb-project-repo { font-size:12px; gap:8px; margin-bottom:14px; }
  .bb-project-intro { font-size:14px; }
  .bb-project-header-bottom { margin:18px 0; gap:14px; }
  .bb-project-rating-link { width:100%; }
  .bb-project-nav { gap:2px 12px; margin-bottom:18px; }
  .bb-project-nav a { font-size:12px; min-height:40px; }
  .bb-project-grid { padding-bottom:calc(86px + env(safe-area-inset-bottom)); }
  .bb-project-main { gap:18px; }
  .bb-project-panel { border-radius:12px; }
  .bb-project-panel-heading { padding:12px 14px; }
  .bb-project-readme > .beebee-content, .bb-project-section { padding:16px; }
  .bb-project-cover { padding:14px 14px 0; }
  .bb-project-cover img { max-height:230px; }
  .bb-project-readme .content { font-size:14px; }
  .bb-project-readme .content h2 { font-size:18px; }
  .bb-project-section h2 { font-size:18px; }
  .bb-project-contribute-grid { grid-template-columns:1fr; }
  .bb-project-contribute-grid > div + div { border-left:0; border-top:1px solid var(--project-border); }
  .bb-project-contribute-grid > div { padding:15px; }
  .bb-project-tags a { min-height:36px; }
  .bb-project-sidebar { display:block; }
  .bb-project-review-compose { padding:14px; }
  .bb-project-login .bb-project-button { width:100%; }
}
@media (prefers-reduced-motion:reduce) { .bb-project-shell * { scroll-behavior:auto; } }
.bb-project-shared-versions { margin-top:20px; padding-top:20px; border-top:1px solid var(--project-border); }
.bb-project-shared-versions h3 { font-size:15px; font-weight:600; margin-bottom:8px; }
.bb-project-shared-versions p { margin-bottom:12px; }
.bb-project-shared-empty { padding:16px; border:1px dashed var(--project-border); border-radius:10px; color:var(--project-muted); font-size:12px; line-height:1.8; }
.bb-project-shared-item { display:flex; flex-wrap:wrap; justify-content:space-between; align-items:center; gap:8px; padding:12px 0; border-top:1px solid var(--project-border); font-size:12px; }
.bb-project-shared-item span { color:var(--project-muted); }
@media (max-width:1099px) { .bb-project-sidebar { grid-row:1; } }
@media (max-width:767px) {
  .bb-project-sidebar .bb-project-about + .bb-project-about { display:none; }
  .bb-project-sidebar .bb-project-about > p:not(.bb-project-muted) { display:none; }
  .bb-project-about { padding-bottom:16px; margin-bottom:0; }
  .bb-project-about dl { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:10px 16px; }
  .bb-project-about dl > div { display:block; margin:0; }
  .bb-project-about dd { text-align:left; margin-top:3px; }
}
.bb-project-share-status { padding:0 0 14px; margin-bottom:14px; border-bottom:1px solid var(--project-border); font-size:12px; }
.bb-project-share-status:not([hidden]) { display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:8px; }
.bb-project-share-status button { color:var(--project-secondary); text-decoration:underline; min-height:36px; }
.bb-project-review-notice { background:var(--project-raised); border:1px solid var(--project-border); border-radius:10px; padding:12px 14px; color:var(--project-secondary); font-size:13px; line-height:1.8; margin-bottom:18px; }

/* Existing checkout markup retains its server-side access and order handlers. */
.bb-project-commerce {border:1px solid var(--project-border,#ddd);border-radius:12px;margin:16px 0;overflow:hidden;background:var(--project-surface,#fafafa);color:inherit;min-width:0}
.bb-project-commerce > div {overflow:visible;padding:20px}
.bb-project-commerce button,.bb-project-commerce a {max-width:100%;overflow-wrap:anywhere}
.dark .bb-project-commerce {background:var(--bb-surface);border-color:var(--bb-border);color:var(--bb-text)}
.dark .bb-project-commerce .text-neutral-500 {color:var(--bb-text-muted)}
.aixzd-source-commercial-price {margin-left:auto;white-space:nowrap;font-size:13px;font-weight:600;color:#525252}
.dark .aixzd-source-commercial-price {color:var(--bb-text-secondary)}
@media(max-width:767px){.bb-project-commerce > div{padding:14px}.bb-project-commerce button{min-height:44px}.bb-project-header .bb-project-repo{flex-wrap:wrap}}
/* Research articles share site surfaces, with a quieter journal hierarchy. */
.bb-paper-kicker{display:flex;gap:10px 18px;flex-wrap:wrap;align-items:center;font-size:11px;color:var(--project-muted);margin:8px 0 20px;letter-spacing:.1em}
.bb-paper-kicker span:first-child{color:var(--project-ink);font-weight:600;letter-spacing:.16em}
.bb-paper-header h1{font-size:clamp(24px,2.5vw,36px);max-width:1050px;line-height:1.45}
.bb-paper-original-title{font-family:Georgia,'Times New Roman',serif;font-size:clamp(17px,1.5vw,22px);color:var(--project-secondary);line-height:1.55;max-width:1000px;margin:12px 0;overflow-wrap:anywhere}
.bb-paper-authors{font-size:13px;line-height:1.9;color:var(--project-muted);max-width:1000px;overflow-wrap:anywhere}
.bb-paper-badges{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0}
.bb-paper-badges .bb-project-pill{max-width:100%;flex-shrink:1;overflow-wrap:anywhere}
.bb-paper-header .bb-project-intro{margin-top:20px}
.bb-paper-reading .bb-project-cover img{max-height:450px}
.bb-paper-reading figcaption{font-size:11px;color:var(--project-muted);line-height:1.7;margin-top:10px}
.bb-paper-resource-list{display:flex;flex-direction:column;margin:12px 0 18px}
.bb-paper-resource-list>a{display:flex;align-items:center;gap:18px;padding:18px 0;border-bottom:1px solid var(--project-border);color:var(--project-ink);min-width:0}
.bb-paper-resource-list>a:hover{background:var(--project-raised)}
.bb-paper-resource-list>a>span:first-child{font-size:12px;color:var(--project-muted);width:20px;flex-shrink:0}
.bb-paper-resource-list>a>span:last-child{margin-left:auto}
.bb-paper-resource-list p{font-size:13px;margin:4px 0 0;color:var(--project-muted);line-height:1.8}
.bb-paper-citation pre{white-space:pre-wrap;overflow-wrap:anywhere;background:var(--project-raised);padding:18px;border-radius:10px;color:var(--project-secondary);font-size:12px;line-height:1.8;margin:18px 0;max-width:100%}
.bb-paper-sidebar .bb-project-about dl>div{display:block;padding:10px 0}
.bb-paper-sidebar dt{font-size:11px;margin-bottom:5px}
.bb-paper-sidebar dd{text-align:left;overflow-wrap:anywhere;line-height:1.8}
@media(max-width:767px){.bb-paper-header{padding-top:6px}.bb-paper-kicker{margin-bottom:14px;gap:8px 12px}.bb-paper-authors{font-size:12px}.bb-paper-sidebar .bb-project-about dl{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:8px 16px}.bb-paper-sidebar .bb-project-about dl>div{min-width:0}.bb-paper-resource-list>a{gap:12px}.bb-paper-citation pre{padding:12px}.bb-paper-header .bb-project-actions>a{min-height:40px}}