/* Copied from articles/articles.css in PR 10 (8b0d374) so both article routes look the same. Keep the two in step. */
/* Follows Fabio's AI program system: warm paper, white bands edged with hairlines, ink top-rules on grouped items, white cards, one cobalt callout. */
:root{
  --paper:#F3F1EC; --white:#FFFFFF; --ink:#1F2023; --body:#45474D; --meta:#5E6066;
  --line:#E6E3DC; --rule:#D4D1C9; --cobalt:#2340D8; --on-cobalt:#F3F1EC; --on-cobalt-soft:#DCE1FA; --tint:#EDF0FD; --img:#E6E3DC;
  --sans:"Geist","Helvetica Neue",Helvetica,Arial,sans-serif;
  --mono:"Geist Mono",ui-monospace,monospace;
  --wrap:1320px; --gut:clamp(20px,4vw,56px);
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --paper:#17181A; --white:#202124; --ink:#ECEAE5; --body:#B9B7B1; --meta:#A3A19B;
  --line:#2E2F33; --rule:#3A3B3F; --cobalt:#8295FF; --on-cobalt:#0E1020; --on-cobalt-soft:#1C2340; --tint:#1C2134; --img:#2A2B2E; color-scheme:dark}}
:root[data-theme="dark"]{
  --paper:#17181A; --white:#202124; --ink:#ECEAE5; --body:#B9B7B1; --meta:#A3A19B;
  --line:#2E2F33; --rule:#3A3B3F; --cobalt:#8295FF; --on-cobalt:#0E1020; --on-cobalt-soft:#1C2340; --tint:#1C2134; --img:#2A2B2E; color-scheme:dark}

*{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.5;-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--paper)}
html{scroll-padding-top:88px}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--ink);outline-offset:3px}
p,h1,h2,h3{margin:0}
h1,h2,h3{font-weight:500;text-wrap:balance}
.wrap{max-width:var(--wrap);margin:0 auto;padding-left:max(var(--gut),env(safe-area-inset-left,0px));padding-right:max(var(--gut),env(safe-area-inset-right,0px))}
.sec{padding-top:clamp(72px,9vw,128px)}
.band{margin-top:clamp(72px,9vw,128px);background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.band > .wrap{padding-top:clamp(72px,9vw,128px);padding-bottom:clamp(72px,9vw,128px)}
h2{font-size:clamp(30px,3.6vw,52px);line-height:1.04;letter-spacing:-0.035em;max-width:18ch}
.head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:16px 48px}
h2.xl{font-size:clamp(40px,6.4vw,84px);line-height:1;letter-spacing:-0.045em;max-width:14ch}
.eyebrow{margin-bottom:clamp(16px,1.8vw,24px);font-family:var(--mono);font-size:clamp(13px,1.1vw,15px);color:var(--cobalt)}
.head .aside{max-width:420px;font-size:16px;line-height:1.55;color:var(--body);text-wrap:pretty}
.meta{font-family:var(--mono);font-size:13px;color:var(--meta)}
.btn{display:inline-flex;align-items:center;min-height:50px;padding:0 22px;border-radius:6px;font-weight:500;font-size:15px;border:0;cursor:pointer;font-family:inherit;background:var(--cobalt);color:var(--on-cobalt);transition:background .2s,color .2s}
.btn:hover{background:var(--ink);color:var(--paper)}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid color-mix(in srgb,var(--ink) 25%,transparent)}
.btn.ghost:hover{border-color:var(--cobalt);color:var(--cobalt);background:transparent}

/* header: the same bar as the retail pages */
.bar{position:sticky;top:env(safe-area-inset-top,0px);z-index:30;background:color-mix(in srgb,var(--paper) 86%,transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid color-mix(in srgb,var(--ink) 8%,transparent)}
.mark{display:inline-flex;align-items:center;min-height:44px;font-size:18px;font-weight:600;letter-spacing:-0.02em}
/* header: one bar on every page */
.bar .wrap{display:flex;align-items:center;gap:32px;min-height:64px}
.bar .mark{margin-right:auto}
.nav ul,.menu ul,footer ul{display:flex;align-items:center;gap:28px;list-style:none;margin:0;padding:0;font-size:15px}
.nav a,.menu a{display:inline-flex;align-items:center;min-height:44px;color:var(--body);transition:color .2s}
.nav a:hover,.menu a:hover,.nav a[aria-current],.menu a[aria-current]{color:var(--ink)}
/* current page: a cobalt bar on the header's bottom edge; the section above a child page: ink text only */
.nav a{position:relative}
.nav a[aria-current="page"]::after{content:"";position:absolute;left:0;right:0;bottom:-10px;height:2px;background:var(--cobalt)}
.nav a[aria-current="true"]::after{content:"";position:absolute;left:0;right:0;bottom:-10px;height:2px;background:color-mix(in srgb,var(--ink) 22%,transparent)}
.menu a[aria-current="page"]{color:var(--cobalt)}
.skip{position:absolute;left:var(--gut);top:10px;z-index:40;padding:12px 16px;border-radius:6px;background:var(--ink);color:var(--paper);font-size:15px}
.skip:not(:focus){clip-path:inset(50%);width:1px;height:1px;padding:0;overflow:hidden;white-space:nowrap}
.more{display:inline-flex;align-items:center;min-height:44px;font-size:15px;color:var(--cobalt);border-bottom:1px solid transparent;transition:border-color .2s}
.more::after{content:"→";margin-left:8px;transition:transform .2s}
.more:hover::after{transform:translateX(3px)}
.bar .cta{display:inline-flex;align-items:center;min-height:44px;padding:0 16px;border-radius:6px;background:var(--cobalt);color:var(--on-cobalt);font-size:15px;font-weight:500;transition:background .2s,color .2s}
.bar .cta:hover{background:var(--ink);color:var(--paper)}
.menu{display:none;position:relative}
.menu summary{list-style:none;cursor:pointer;display:flex;align-items:center;min-height:44px;font-size:15px;color:var(--ink)}
.menu summary::-webkit-details-marker{display:none}
.menu[open] summary{color:var(--cobalt)}
.menu nav{position:absolute;right:0;top:calc(100% + 11px);min-width:200px;background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:8px 20px;box-shadow:0 12px 32px -16px rgba(0,0,0,.25)}
.menu ul{flex-direction:column;align-items:stretch;gap:0}
.menu li+li{border-top:1px solid var(--line)}
.menu a{display:flex;min-height:48px;font-size:17px;color:var(--ink)}
@media (max-width:720px){.nav{display:none}.menu{display:block}.bar .wrap{gap:20px}}

/* footer */
footer{margin-top:0;border-top:1px solid var(--line);background:var(--paper);color:var(--ink)}
footer .wrap{display:flex;flex-wrap:wrap;align-items:center;gap:12px 32px;padding-top:32px;padding-bottom:32px}
footer .mark{margin-right:auto}
footer ul{flex-wrap:wrap;gap:4px 24px;font-size:14px}
footer ul a{display:inline-flex;align-items:center;min-height:44px;color:var(--body)}
footer ul a:hover{color:var(--ink)}
footer p{width:100%;font-size:13px;color:var(--meta)}


/* articles: one reading column, the type as a cobalt eyebrow, the five-minute exercise as the one tinted block */
em,i{font-style:normal}
.page-head{padding-block:clamp(64px,9vw,128px) clamp(32px,4vw,56px)}
.page-head h1{font-size:clamp(40px,6.4vw,84px);line-height:1;letter-spacing:-0.045em;max-width:16ch}
.page-head .lead{margin-top:24px;max-width:46ch;font-size:clamp(18px,1.5vw,21px);line-height:1.5;color:var(--body);text-wrap:pretty}
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-top:32px}
.filters button{font:inherit;font-size:14px;min-height:44px;padding:0 16px;border-radius:999px;border:1px solid var(--rule);background:transparent;color:var(--ink);cursor:pointer}
.filters button[aria-pressed="true"]{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.list{list-style:none;margin:0;padding:0 0 clamp(72px,9vw,128px);display:grid}
.list li{border-top:1px solid var(--ink)}
.list li:last-child{border-bottom:1px solid var(--ink)}
.list a{display:grid;grid-template-columns:minmax(0,160px) minmax(0,1fr) auto;gap:8px clamp(20px,3vw,48px);padding:clamp(20px,2.4vw,32px) 0;align-items:baseline}
.list a:hover h2{color:var(--cobalt)}
.list .type{font-family:var(--mono);font-size:13px;color:var(--cobalt)}
.list h2{font-size:clamp(22px,2.2vw,30px);line-height:1.15;letter-spacing:-0.025em;max-width:none;transition:color .2s}
.list p{margin-top:8px;font-size:16px;line-height:1.5;color:var(--body);max-width:62ch}
.list .meta{white-space:nowrap}
@media (max-width:760px){.list a{grid-template-columns:1fr}}
.empty{padding-bottom:clamp(72px,9vw,128px);color:var(--body);font-size:17px}
/* article */
.art{max-width:720px;margin:0 auto;padding-left:max(var(--gut),env(safe-area-inset-left,0px));padding-right:max(var(--gut),env(safe-area-inset-right,0px))}
.art-head{padding-block:clamp(56px,8vw,112px) 0}
.art-head h1{font-size:clamp(34px,4.6vw,58px);line-height:1.04;letter-spacing:-0.04em}
.art-head .stand{margin-top:20px;font-size:clamp(19px,1.6vw,22px);line-height:1.45;color:var(--body);text-wrap:pretty}
.byline{margin-top:28px;display:flex;flex-wrap:wrap;gap:6px 18px;align-items:center;border-top:1px solid var(--ink);padding-top:14px}
.byline b{font-weight:500}
.prose{padding-block:clamp(32px,4vw,48px) 0;font-size:clamp(19px,1.4vw,20px);line-height:1.6;max-width:66ch}
.prose > * + *{margin-top:1.1em}
.prose h2{font-size:clamp(24px,2.4vw,30px);line-height:1.15;letter-spacing:-0.025em;margin-top:1.8em;max-width:none}
.prose a{color:var(--cobalt);border-bottom:1px solid currentColor}
.prose ul,.prose ol{padding-left:1.2em}
.prose li + li{margin-top:.4em}
.prose blockquote{margin:1.6em 0;padding:4px 0 4px 20px;border-left:3px solid var(--cobalt);font-size:clamp(20px,1.8vw,24px);line-height:1.4;letter-spacing:-0.015em;color:var(--ink)}
.prose figure{margin:1.8em 0}
.prose figure img{display:block;width:100%;height:auto;border-radius:12px;background:var(--img)}
.prose figcaption{margin-top:10px;font-size:14px;color:var(--meta)}
.exercise{margin-top:clamp(40px,5vw,64px);background:var(--tint);border:1px solid var(--cobalt);border-radius:12px;padding:clamp(24px,3vw,36px)}
.exercise h2{font-size:clamp(22px,2vw,28px);line-height:1.15;letter-spacing:-0.025em;max-width:none}
.exercise ol{margin:18px 0 0;padding:0;list-style:none;display:grid;gap:14px;counter-reset:s}
.exercise ol li{counter-increment:s;display:grid;grid-template-columns:32px minmax(0,1fr);gap:10px;font-size:17px;line-height:1.5}
.exercise ol li::before{content:counter(s,decimal-leading-zero);font-family:var(--mono);font-size:14px;color:var(--cobalt);padding-top:3px}
.exercise p.after{margin-top:18px;font-size:16px;line-height:1.55;color:var(--body)}
.art-foot{margin-top:clamp(40px,5vw,64px);padding-top:0;padding-bottom:clamp(72px,9vw,128px);display:grid;gap:24px}
.art-foot::before{content:"";height:1px;background:var(--ink);margin-bottom:-4px}
.author{display:grid;grid-template-columns:72px minmax(0,1fr);gap:16px;align-items:start}
.author img{width:72px;height:72px;object-fit:cover;border-radius:50%;filter:grayscale(1);background:var(--img)}
.author p{font-size:15px;line-height:1.55;color:var(--body)}
.author p b{color:var(--ink);font-weight:500}
.next{display:flex;flex-wrap:wrap;gap:0 28px}
.dx{font-size:17px;line-height:1.5;color:var(--body)}
.dx .more{margin-left:4px}
.news{display:grid;gap:10px;border-top:1px solid var(--line);padding-top:24px}
.news label{font-size:17px;color:var(--ink)}
.news div{display:flex;flex-wrap:wrap;gap:10px}
.news input{flex:1 1 220px;min-height:50px;font:inherit;font-size:16px;color:var(--ink);background:var(--white);border:1px solid var(--line);border-radius:6px;padding:0 14px}
.news input:focus{outline:2px solid var(--cobalt);outline-offset:0;border-color:transparent}

/* PR 11 only: keep the body on the same column as the head and foot, and let an author without a photo use the full width */
.art.prose{max-width:720px}
.author.no-photo{grid-template-columns:1fr}

/* Video under the byline, the width of the text column */
.art-video{margin-block:clamp(28px,3.5vw,40px) 0}
.art-video video{display:block;width:100%;height:auto;aspect-ratio:16/9;background:#0E0F12;border-radius:4px}