/* Sigma: the accepted design extended to content only. Never targets header/footer. */
#main .ao-sigma { color:var(--ao-navy); background:var(--ao-page); font:400 17px/1.58 var(--ao-body); padding:22px 0 80px; font-synthesis:none; }
#main .ao-sigma *, #main .ao-sigma *::before, #main .ao-sigma *::after { box-sizing:border-box; }
#main .ao-sigma :is(h1,h2,h3,h4,p,ul,ol,dl,dd,figure) { margin:0; }
#main .ao-sigma :is(h1,h2,h3,h4) { color:var(--ao-navy); font-family:var(--ao-display); font-weight:800; letter-spacing:0; text-wrap:balance; }
#main .ao-sigma h1 { font-size:clamp(44px,6vw,82px); line-height:1.025; overflow-wrap:anywhere; }
#main .ao-sigma h2 { font-size:clamp(36px,4vw,52px); line-height:1.08; }
#main .ao-sigma h3 { font-size:26px; line-height:1.24; font-weight:700; }
#main .ao-sigma p { color:var(--ao-muted); }
#main .ao-sigma a { color:inherit; text-underline-offset:4px; }
#main .ao-sigma a:hover { text-decoration:underline; }
#main .ao-sigma :is(a,button,summary,input,select,textarea):focus-visible { outline:3px solid var(--ao-blue); outline-offset:5px; }
#main .ao-sigma [id] { scroll-margin-top:120px; }
#main .ao-sigma :is(img,video,svg,iframe) { max-width:100%; }
#main .ao-sigma img { height:auto; }
#main .ao-sigma .sigma-container { width:calc(100% - 80px); max-width:1160px; margin-inline:auto; }
#main .ao-sigma .sigma-blue { color:var(--ao-blue); }
#main .ao-sigma .sigma-hero { text-align:center; padding:16px 0 64px; }
#main .ao-sigma .sigma-hero h1 { max-width:1100px; margin:20px auto 0; }
#main .ao-sigma .sigma-lead { max-width:660px; font-size:18px; line-height:28px; margin-top:26px; }
#main .ao-sigma .sigma-hero .sigma-lead { margin-inline:auto; }
#main .ao-sigma .sigma-note { font-size:14px; line-height:22px; margin-top:20px; }
#main .ao-sigma .sigma-byline { display:flex; align-items:center; justify-content:center; gap:13px; font-size:14px; color:var(--ao-navy); }
#main .ao-sigma .sigma-byline img { width:32px; height:32px; object-fit:cover; border-radius:50%; }
#main .ao-sigma :is(.sigma-button,.sigma-btn) { display:inline-flex; align-items:center; justify-content:center; gap:12px; min-height:46px; max-width:100%; padding:13px 22px; border:1px solid transparent; border-radius:10px; background:var(--ao-blue); color:var(--ao-on-action,#fff); font:700 15px/1.25 var(--ao-body); text-decoration:none; cursor:pointer; }
#main .ao-sigma :is(.sigma-button,.sigma-btn):hover { text-decoration:none; transform:translateY(-2px); }
#main .ao-sigma :is(.sigma-button,.sigma-btn) :is(svg,span) { color:var(--ao-on-action,#fff); }
#main .ao-sigma :is(.sigma-button,.sigma-btn) img { filter:brightness(0) invert(1); flex-shrink:0; }
#main .ao-sigma .sigma-link { display:inline-flex; align-items:center; gap:10px; font-weight:700; text-decoration:none; min-height:44px; }
#main .ao-sigma :is(.sigma-button,.sigma-link) svg { flex-shrink:0; }
#main .ao-sigma :is(.sigma-hero,.sigma-band,.sigma-final) > :is(.sigma-button,.sigma-link), #main .ao-sigma :is(.sigma-band,.sigma-final) > div > :is(.sigma-button,.sigma-link) { margin-top:28px; }
#main .ao-sigma .sigma-section { margin-top:64px; }
#main .ao-sigma .sigma-hero + .sigma-section { margin-top:0; border-top:1px solid var(--ao-border); padding-top:52px; }
#main .ao-sigma .sigma-section > p { max-width:66ch; margin-top:22px; }
#main .ao-sigma .sigma-section-lead { max-width:66ch; margin-top:22px; font-size:18px; line-height:28px; }
#main .ao-sigma .sigma-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:32px; margin-top:36px; }
#main .ao-sigma .sigma-split { display:grid; grid-template-columns:minmax(0,1fr) minmax(0,1fr); gap:64px; align-items:start; }
#main .ao-sigma .sigma-band { background:var(--ao-soft); border-radius:24px; padding:44px 40px; }
#main .ao-sigma .sigma-band h2 + p { margin-top:24px; }
#main .ao-sigma .sigma-final { text-align:center; padding-top:48px; border-top:1px solid var(--ao-border); }
#main .ao-sigma .sigma-final p { max-width:60ch; margin:24px auto 0; }
#main .ao-sigma .sigma-final h2 { font-size:clamp(40px,6vw,80px); }
#main .ao-sigma .sigma-answers > :is(details,section) { border-bottom:1px solid var(--ao-border); padding-bottom:24px; margin-bottom:24px; }
#main .ao-sigma .sigma-answers summary { font:700 23px/1.3 var(--ao-display); cursor:pointer; padding:8px 24px 8px 0; }
#main .ao-sigma .sigma-answers p { margin-top:16px; }
#main .ao-sigma .sigma-illustration { background:#fafafa; border-radius:20px; padding:24px; }
#main .ao-sigma .sigma-illustration img { display:block; width:100%; max-height:330px; object-fit:contain; }
#main .ao-sigma .sigma-illustration figcaption { font-size:13px; line-height:20px; margin-top:16px; color:#526070; }
#main .ao-sigma .sigma-numbered-list { list-style:none; padding:0; }
#main .ao-sigma .sigma-numbered-list li { display:grid; grid-template-columns:36px 1fr; gap:16px; padding:24px 0; border-bottom:1px solid var(--ao-border); }
#main .ao-sigma .sigma-numbered-list li:first-child { padding-top:0; }
#main .ao-sigma .sigma-numbered-list span { color:var(--ao-blue); font-size:14px; padding-top:6px; }
#main .ao-sigma .sigma-steps { list-style:none; padding:0; }
#main .ao-sigma .sigma-steps span { display:block; font-size:13px; padding-bottom:16px; border-bottom:1px solid var(--ao-border); margin-bottom:24px; color:var(--ao-blue); }
#main .ao-sigma .sigma-steps p { margin-top:16px; }
#main .ao-sigma .sigma-link-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:0 32px; margin-top:28px; }
#main .ao-sigma .sigma-link-grid a { display:flex; gap:16px; align-items:center; justify-content:space-between; border-bottom:1px solid var(--ao-border); padding:22px 0; font-weight:600; text-decoration:none; }
#main .ao-sigma .sigma-link-grid svg { flex-shrink:0; }
#main .ao-sigma .sigma-comparison-head, #main .ao-sigma .sigma-comparison-row { display:grid; grid-template-columns:minmax(140px,.7fr) repeat(2,minmax(0,1fr)); gap:32px; border-bottom:1px solid var(--ao-border); padding:26px 0; }
#main .ao-sigma .sigma-comparison-head { color:var(--ao-blue); font-weight:700; }
#main .ao-sigma .sigma-comparison-row h2 { font-size:25px; line-height:1.25; }
#main .ao-sigma .sigma-comparison-row h3 { position:absolute; width:1px; height:1px; overflow:hidden; clip-path:inset(50%); }
#main .ao-sigma .sigma-prose { max-width:800px; overflow-wrap:anywhere; }
#main .ao-sigma .sigma-prose :is(h2,h3,h4) { margin-top:40px; margin-bottom:20px; }
#main .ao-sigma .sigma-prose :is(p,ul,ol,figure,blockquote,table,pre) { margin-bottom:24px; }
#main .ao-sigma .sigma-prose :is(ul,ol) { padding-left:24px; }
#main .ao-sigma .sigma-prose li + li { margin-top:10px; }
#main .ao-sigma .sigma-prose table { display:block; overflow-x:auto; max-width:100%; border-collapse:collapse; }
#main .ao-sigma .sigma-prose :is(td,th) { padding:14px; border:1px solid var(--ao-border); }
#main .ao-sigma .sigma-prose pre { max-width:100%; overflow-x:auto; padding:20px; background:var(--ao-soft); border-radius:12px; }
#main .ao-sigma .sigma-prose blockquote { border-left:3px solid var(--ao-blue); margin-left:0; padding:16px 24px; background:var(--ao-soft); }
/* Last-resort compatibility: authored or migrated markup keeps content and links. */
#main .ao-sigma .sigma-legacy-content { max-width:1160px; }
#main .ao-sigma .sigma-legacy-content .atk-sober-hero { text-align:center; padding:22px 0 56px; }
#main .ao-sigma .sigma-legacy-content .atk-sober-hero h1 { margin:16px auto 24px; }
#main .ao-sigma .sigma-legacy-content .atk-sober-lead { max-width:660px; margin-inline:auto; font-size:18px; }
#main .ao-sigma .sigma-legacy-content :is(.atk-sober-section,.atk-sober-final) { margin-block:56px; }
#main .ao-sigma .sigma-legacy-content .atk-sober-band { padding:30px; border-radius:24px; background:var(--ao-soft); }
#main .ao-sigma .sigma-legacy-content :is(.atk-sober-grid-2,.atk-sober-grid-3,.atk-sober-steps) { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:28px; }
#main .ao-sigma .sigma-legacy-content .atk-sober-actions { display:flex; flex-wrap:wrap; justify-content:center; gap:20px; }
#main .ao-sigma .sigma-legacy-content :is(.atk-sober-btn,.atk-sober-btn-primary) { display:inline-flex; align-items:center; justify-content:center; min-height:46px; padding:12px 22px; border-radius:10px; background:var(--ao-blue); color:var(--ao-on-action,#fff); font-weight:700; text-decoration:none; }
#main .ao-sigma .sigma-legacy-content details { border-bottom:1px solid var(--ao-border); padding:20px 0; }
#main .ao-sigma .sigma-legacy-content summary { font:700 23px/1.3 var(--ao-display); cursor:pointer; }
#main .ao-sigma .sigma-legacy-content :is(.atk-sober-breadcrumb,.atk-sober-eyebrow) { font-size:13px; color:var(--ao-muted); }
@media(max-width:1000px) {
  #main .ao-sigma .sigma-container { width:calc(100% - 48px); }
  #main .ao-sigma .sigma-split { gap:36px; }
  #main .ao-sigma .sigma-grid { gap:24px; }
  #main .ao-sigma .sigma-band { padding:32px 28px; }
}
@media(max-width:700px) {
  #main .ao-sigma { padding-top:10px; padding-bottom:48px; font-size:16px; }
  #main .ao-sigma h1 { font-size:44px; line-height:1.05; }
  #main .ao-sigma h2 { font-size:36px; line-height:1.1; }
  #main .ao-sigma h3 { font-size:23px; }
  #main .ao-sigma .sigma-hero { padding-bottom:44px; }
  #main .ao-sigma .sigma-section { margin-top:48px; }
  #main .ao-sigma .sigma-hero + .sigma-section { padding-top:36px; }
  #main .ao-sigma .sigma-lead { font-size:18px; line-height:26px; }
  #main .ao-sigma :is(.sigma-split,.sigma-grid,.sigma-link-grid) { grid-template-columns:1fr; gap:28px; }
  #main .ao-sigma .sigma-band { padding:28px 20px; border-radius:20px; }
  #main .ao-sigma .sigma-band h2 { font-size:32px; }
  #main .ao-sigma .sigma-button { width:100%; font-size:15px; padding-inline:14px; }
  #main .ao-sigma .sigma-comparison-head { display:none; }
  #main .ao-sigma .sigma-comparison-row { grid-template-columns:1fr; gap:20px; padding:28px 0; }
  #main .ao-sigma .sigma-comparison-row h3 { position:static; width:auto; height:auto; clip-path:none; color:var(--ao-blue); font:700 15px/1.4 var(--ao-body); margin-bottom:8px; }
  #main .ao-sigma .sigma-answers summary { font-size:21px; }
  #main .ao-sigma .sigma-illustration { padding:16px; }
  #main .ao-sigma .sigma-legacy-content :is(.atk-sober-grid-2,.atk-sober-grid-3,.atk-sober-steps) { grid-template-columns:1fr; }
  #main .ao-sigma .sigma-legacy-content .atk-sober-band { padding:24px 16px; }
}
@media(max-width:374px) {
  #main .ao-sigma h1 { font-size:38px; }
  #main .ao-sigma h2 { font-size:32px; }
  #main .ao-sigma .sigma-button { font-size:14px; }
}
@media(prefers-reduced-motion:reduce) {
  #main .ao-sigma *, #main .ao-sigma *::before, #main .ao-sigma *::after { scroll-behavior:auto!important; transition:none!important; animation:none!important; }
  #main .ao-sigma :is(.sigma-button,.sigma-btn):hover { transform:none; }
}