/* A/B testing calculators and setup guide. Shared --ink/--muted/--line/--paper/--white/--blue tokens follow dark mode. */
.ab-page{max-width:1200px}
.ab-heading h1{font-size:clamp(28px,4vw,42px);line-height:1.25;margin:8px 0 12px}
.ab-family{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 16px}.ab-family a{font-size:14px;border:1px solid var(--line);background:var(--white);border-radius:999px;padding:7px 13px;color:var(--ink);text-decoration:none}.ab-family a[aria-current=page]{background:var(--blue);border-color:var(--blue);color:#fff;font-weight:600}
.ab-workbench{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:18px;border:1px solid var(--line);border-radius:18px;background:var(--white);box-shadow:0 14px 42px rgba(23,42,71,.06);padding:16px 18px;min-width:0;color:var(--ink)}
.ab-form,.ab-out,.ab-detail{display:grid;gap:14px;align-content:start;min-width:0}.ab-detail{grid-column:1/-1;gap:10px}
.ab-arms-head,.ab-arm{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr) minmax(0,1fr) 64px;gap:8px;align-items:center}
.ab-arms-head{font-size:13px;color:var(--muted)}.ab-arms{display:grid;gap:8px}
.ab-arm{position:relative}.ab-arm input{min-height:44px;border:1px solid var(--line);border-radius:10px;padding:7px 10px;font:inherit;font-size:16px;color:var(--ink);background:var(--white);width:100%;box-sizing:border-box;min-width:0}
.ab-arm .ab-name{font-weight:600}.ab-arm-rate{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap}
.ab-arm .ab-remove{position:absolute;right:-6px;top:-8px;width:24px;height:24px;min-height:0!important;padding:0!important;border-radius:50%!important;font-size:15px!important;line-height:1}
.ab-add{justify-self:start}
.ab-settings{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px}
.ab-settings label,.ab-field{display:grid;gap:6px;font-size:13px;color:var(--muted);min-width:0}
.ab-settings select,.ab-settings input,.ab-field input{min-height:44px;border:1px solid var(--line);border-radius:10px;padding:7px 10px;font:inherit;font-size:16px;color:var(--ink);background:var(--white);width:100%;box-sizing:border-box;min-width:0}
.ab-unit{display:flex;align-items:center;border:1px solid var(--line);border-radius:10px;background:var(--white)}.ab-unit:focus-within{outline:2px solid var(--blue);outline-offset:1px}
.ab-unit input{border:0!important;outline:0;font-size:20px!important;font-weight:600}.ab-unit b{padding:0 12px;color:var(--muted);font-size:14px}
.ab-radio{display:flex;flex-wrap:wrap;gap:6px 14px;font-size:14px;color:var(--ink)}.ab-radio label{display:flex;align-items:center;gap:6px;cursor:pointer}.ab-radio input{accent-color:var(--blue)}
.ab-verdict{border:1px solid var(--line);border-radius:14px;padding:12px 14px;background:var(--paper);line-height:1.7}.ab-verdict p{margin:2px 0}.ab-verdict b{display:block;margin-bottom:4px}.ab-verdict small{display:block;color:var(--muted);margin-top:4px}
.ab-verdict.ab-good{border-color:#86d3a8;background:#ecfaf2}.ab-verdict.ab-bad{border-color:#f0b4b4;background:#fdf0f0}.ab-verdict.ab-warn{border-color:#f0c36a;background:#fff8e6}
.ab-chart svg{display:block;overflow:visible}.ab-chart rect.ab-ctl{fill:#94a3b8}.ab-chart rect.ab-up{fill:#22a06b}.ab-chart rect.ab-down{fill:#dc5a5a}.ab-chart rect.ab-flat{fill:#7c9cf0}.ab-chart .ab-ci{stroke:var(--ink);stroke-width:1.5}
.ab-chart-labels{display:flex;flex-wrap:wrap;gap:4px 14px;font-size:13px;color:var(--muted);margin-top:4px}
.ab-table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px;margin:8px 0}.ab-table-wrap:has(.ab-table:empty){display:none}
.ab-table{width:100%;border-collapse:collapse;font-size:14px}.ab-table th,.ab-table td{border-top:1px solid var(--line);padding:7px 10px;text-align:left;vertical-align:top;font-variant-numeric:tabular-nums}
.ab-table thead th{background:var(--paper);font-size:13px;border-top:0}.ab-table small{display:block;color:var(--muted);font-size:12px;white-space:nowrap}.ab-table tr.ab-current{background:var(--blue-soft,#eaf1ff);font-weight:700}
.ab-table code{font-size:13px;overflow-wrap:anywhere}
.ab-tag{display:inline-block;border-radius:999px;padding:1px 9px;font-size:12px;font-weight:700;white-space:nowrap}.ab-tag.ab-up{background:#dcf5e7;color:#14653f}.ab-tag.ab-down{background:#fde2e2;color:#9b1c1c}.ab-tag.ab-flat{background:var(--paper);color:var(--muted);border:1px solid var(--line)}
.ab-note{margin:0;font-size:14px;color:var(--muted);line-height:1.65}.ab-note:empty{display:none}.ab-note.ab-warn{color:#8a5a00;background:#fff8e6;border:1px solid #f0c36a;border-radius:10px;padding:8px 10px}
.ab-result{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:0}.ab-result div{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:12px 14px;min-width:0}
.ab-result dt{font-size:13px;color:var(--muted)}.ab-result dd{margin:4px 0 0;font-size:clamp(17px,2.2vw,24px);font-weight:700;overflow-wrap:anywhere}.ab-result .ab-main{background:var(--blue-soft,#eaf1ff);border-color:var(--blue)}
.ab-actions{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.ab-workbench button{min-height:42px;border:1px solid var(--line);border-radius:10px;padding:6px 13px;font:inherit;font-size:14px;background:var(--white);color:var(--ink);cursor:pointer}
.ab-workbench .ab-actions button.primary{background:var(--blue);border-color:var(--blue);color:#fff;font-weight:600}
.ab-plan-link{font-size:14px;color:var(--blue);text-decoration:none;font-weight:600}.ab-toast{margin:0;font-size:13px;color:#15803d}.ab-toast:empty{display:none}
.ab-toc{border:1px solid var(--line);border-radius:14px;padding:12px 16px;background:var(--paper);margin:0 0 18px}.ab-toc ol{margin:6px 0 0;padding-left:20px;columns:2;column-gap:28px}.ab-toc li{break-inside:avoid;padding:2px 0}
.ab-guide h2[id],.ab-guide h3{scroll-margin-top:90px}
.ab-code{border:1px solid var(--line);border-radius:12px;overflow:hidden;margin:10px 0 16px;background:#0f172a}
.ab-code-head{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:6px 10px;background:#1e293b;color:#cbd5e1;font-size:12.5px}
.ab-copy-code{border:1px solid #475569;background:transparent;color:#e2e8f0;border-radius:7px;padding:3px 10px;font:inherit;font-size:12.5px;cursor:pointer;min-height:30px}
.ab-code pre{margin:0;padding:12px 14px;overflow:auto;max-height:460px;background:#0f172a;color:#e2e8f0;font:12.5px/1.65 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;border:0;border-radius:0}
.ab-code code{background:none;color:inherit;padding:0;font:inherit;white-space:pre}
.ab-tabbar{display:flex;gap:6px;margin:10px 0 -4px}.ab-tabbar button{border:1px solid var(--line);background:var(--white);color:var(--ink);border-radius:999px;padding:5px 14px;font:inherit;font-size:13.5px;cursor:pointer;min-height:36px}.ab-tabbar button[aria-selected=true]{background:var(--blue);border-color:var(--blue);color:#fff;font-weight:600}
.ab-platforms,.ab-api{display:grid;gap:8px;margin:10px 0 16px}.ab-platforms div,.ab-api div{border:1px solid var(--line);border-radius:12px;padding:10px 14px;background:var(--white)}
.ab-platforms dt,.ab-api dt{font-weight:700;color:var(--ink)}.ab-platforms dd,.ab-api dd{margin:4px 0 0;color:var(--muted);line-height:1.7;overflow-wrap:anywhere}.ab-api dd{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px}
.ab-compare td,.ab-compare th{min-width:140px}
.ab-cta{display:flex;align-items:center;justify-content:space-between;gap:16px;border:1px solid #c7d4fb;background:var(--blue-soft,#eaf1ff);border-radius:16px;padding:16px 18px;margin:18px 0}.ab-cta p{margin:4px 0 0;color:var(--muted);font-size:14px;line-height:1.7}.ab-cta .primary-link,.prose .ab-cta .primary-link{white-space:nowrap;color:#fff;text-decoration:none}
html[data-xunl-theme="dark"] .ab-verdict.ab-good{background:#123628;border-color:#2f7a55}html[data-xunl-theme="dark"] .ab-verdict.ab-bad{background:#3b1a1a;border-color:#8a3a3a}
html[data-xunl-theme="dark"] .ab-verdict.ab-warn,html[data-xunl-theme="dark"] .ab-note.ab-warn{background:#3a2a12;border-color:#a07a1f;color:#f6d28a}
html[data-xunl-theme="dark"] .ab-tag.ab-up{background:#123628;color:#8be0b4}html[data-xunl-theme="dark"] .ab-tag.ab-down{background:#3b1a1a;color:#f5a3a3}
html[data-xunl-theme="dark"] .ab-toast{color:#a7f3c5}html[data-xunl-theme="dark"] .ab-cta{border-color:#34507f}html[data-xunl-theme="dark"] .ab-chart rect.ab-ctl{fill:#64748b}
@media(max-width:900px){.ab-workbench{grid-template-columns:1fr}.ab-cta{flex-direction:column;align-items:flex-start}}
@media(max-width:560px){.ab-workbench{padding:12px}.ab-arms-head,.ab-arm{grid-template-columns:minmax(0,1fr) minmax(0,1fr) minmax(0,1fr)}.ab-arms-head span:last-child,.ab-arm-rate{display:none}.ab-result{grid-template-columns:1fr 1fr}.ab-result .ab-main{grid-column:1/-1}.ab-toc ol{columns:1}}