/* The Conversion Playbook's look (chosen by Eugiene 4 Nov 2026): tokens read from possible.css, home-story.css and site-footer.css. */
@import url('/assets/sans.css');
@import url('/assets/serif.css');
:root{
 --ink:#121f51;--body:#222b52;--soft:#454d70;--faint:#5c6482;--rule:#e9e8f2;--paper:#fff;--link:#4630b4;
 --spectrum:linear-gradient(115deg,#70b8ff 0%,#7066ff 20%,#b840b8 40%,#ed7370 60%,#e2bd50 80%,#8abb73 100%);
 /* The hero's spectrum, each stop deepened until it clears 3:1 on white, for titles people must read. */
 --spectrum-read:linear-gradient(115deg,#4a90ee 0%,#6a55f5 20%,#b03ab0 40%,#e4614f 60%,#b88a10 80%,#64a346 100%);
 --ring:conic-gradient(from 0deg,#77b9ff,#9162de,#df559b,#efac58,#e3d963,#7ac563,#77b9ff);
 --haze:radial-gradient(38% 46% at 13% 22%,#efe6ff 0,rgba(239,230,255,0) 72%),radial-gradient(42% 50% at 87% 12%,#fff0e2 0,rgba(255,240,226,0) 72%),radial-gradient(44% 46% at 24% 94%,#e4fbe8 0,rgba(228,251,232,0) 72%),radial-gradient(42% 46% at 82% 92%,#e0eeff 0,rgba(224,238,255,0) 72%);
 --sans:Manrope,Arial,sans-serif;--serif:'DM Serif Display',Georgia,serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scrollbar-color:#c7c4da transparent;scrollbar-width:thin}
body{margin:0;background:#fff;color:var(--body);font:400 18px/1.72 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:clip}
img{display:block;max-width:100%;height:auto}
a{color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
::selection{background:#e4dbfd;color:var(--ink)}
:focus-visible{outline:3px solid #5a3fe0;outline-offset:3px;border-radius:6px}
.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:12px;z-index:60;background:#fff;padding:8px 16px;border-radius:12px;color:var(--ink);font-weight:700}
.hide{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}

/* Rainbow type: display sizes only. */
.rb{font-family:var(--serif);font-style:italic;font-weight:400;letter-spacing:-.025em;padding:0 .09em .16em .03em;margin:0 -.03em -.16em 0;color:#6a4fb8;background:var(--spectrum-read);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;-webkit-box-decoration-break:clone;box-decoration-break:clone}

/* The nav pill, as on the home page. */
.nav{display:flex;align-items:center;justify-content:space-between;gap:18px;height:62px;padding:0 10px 0 24px;border:1px solid #e3e5ed;border-radius:100px;background:rgba(255,255,255,.82);box-shadow:0 3px 5px rgba(28,45,66,.05),0 13px 25px rgba(28,45,66,.06);font-size:15px}
.nav img{width:112px}
.nav-links{display:flex;gap:28px;font-weight:500;color:var(--soft)}
.nav-links a{text-decoration:none}.nav-links a:hover{color:var(--ink)}

/* Buttons. */
.ring-btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:9px 20px;border:2.5px solid transparent;border-radius:99px;background:linear-gradient(#fff,#fff) padding-box,var(--ring) border-box;color:var(--ink);font:700 15px/1.3 var(--sans);text-decoration:none;white-space:nowrap;cursor:pointer}
.ring-btn:hover{background:linear-gradient(#f7f5ff,#f7f5ff) padding-box,var(--ring) border-box}
.ink-btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:12px 24px;border:0;border-radius:99px;background:var(--ink);color:#fff;font:700 15px/1.3 var(--sans);text-decoration:none;white-space:nowrap;cursor:pointer}
.ink-btn:hover{background:#26346f}
.ico{display:block;width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.ico-f{display:block;width:18px;height:18px;fill:currentColor}

/* Address bar and email bar: the home hero's field. */
.bar{display:flex;align-items:center;gap:12px;width:100%;padding:8px 8px 8px 24px;border:1px solid #e3e4ee;border-radius:99px;background:#fff;box-shadow:0 22px 44px -22px rgba(84,84,214,.42),0 1px 2px rgba(20,30,70,.05)}
.bar:focus-within{border-color:#8f7ff0;box-shadow:0 22px 44px -22px rgba(84,84,214,.42),0 0 0 3px rgba(118,92,237,.2)}
.bar svg.globe{flex:none;width:22px;height:22px;fill:none;stroke:var(--ink);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.bar input{flex:1;min-width:0;height:44px;border:0;outline:0;background:none;color:var(--ink);font:600 17px var(--sans)}
.bar input::placeholder{color:var(--faint);opacity:1}
.bar .ring-btn{padding:11px 22px;font-size:15.5px}


/* The reading ring: the logo's ring, filling as you read. */
.ring{--p:0;display:block;flex:none;width:30px;height:30px;border-radius:50%;background:conic-gradient(transparent calc(var(--p)*1turn),#e6e5f0 0),var(--ring);-webkit-mask:radial-gradient(farthest-side,transparent calc(100% - 4.5px),#000 calc(100% - 4px));mask:radial-gradient(farthest-side,transparent calc(100% - 4.5px),#000 calc(100% - 4px))}

/* The contents sheet used on phones (and by Option B's button). */
dialog.sheet{position:fixed;inset:auto 0 0 0;width:100%;max-width:560px;max-height:82dvh;margin:0 auto;padding:0;border:0;border-radius:26px 26px 0 0;background:#fff;color:var(--ink);box-shadow:0 -20px 60px -20px rgba(18,31,81,.4);overflow:hidden}
dialog.sheet[open]{display:flex;flex-direction:column}
dialog.sheet::backdrop{background:rgba(18,31,81,.34)}
.sheet-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 16px 12px 22px;border-bottom:1px solid var(--rule);font-weight:800;font-size:17px}
.sheet-x{display:grid;place-items:center;width:44px;height:44px;border:0;border-radius:50%;background:#f4f3fa;color:var(--ink);cursor:pointer}
.sheet-list{overflow:auto;padding:8px 10px 22px;margin:0;list-style:none;counter-reset:s}
.sheet-list a{display:flex;gap:12px;align-items:baseline;min-height:44px;padding:10px 12px;border-radius:12px;font-size:15.5px;line-height:1.38;text-decoration:none;color:var(--body);counter-increment:s}
.sheet-list a::before{content:counter(s);flex:none;width:1.4em;text-align:right;font-size:13px;font-weight:700;color:var(--faint);font-variant-numeric:tabular-nums}
.sheet-list a[aria-current=true]{background:#f3f0fe;color:var(--ink);font-weight:700}

/* Figures, tables and sources share their content rules. */
figcaption b{font-weight:800;color:var(--ink)}
.fig-notes{margin:0;padding:0;list-style:none}
.fig-notes b{font-weight:700;color:var(--ink)}
figcaption small{display:block;font-size:13px;line-height:1.5;color:var(--faint)}
figcaption small a,.cite a{color:var(--link)}
.cite{font-size:.72em;line-height:0;margin-left:1px}.cite a{font-weight:700;text-decoration:none;padding:0 2px}
.sources ol{padding-left:1.6em;font-size:14.5px;line-height:1.6;color:var(--soft)}
.sources li{margin:.3em 0}.sources li:target{background:#f3f0fe;border-radius:6px}
.sources a{color:var(--link);text-underline-offset:3px}
.share{display:flex;gap:8px}
.share a,.share button{display:grid;place-items:center;width:44px;height:44px;border:1px solid var(--rule);border-radius:50%;background:#fff;color:var(--ink);cursor:pointer;text-decoration:none}
.share a:hover,.share button:hover{background:var(--ink);border-color:var(--ink);color:#fff}
.pf{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:10px 26px;color:var(--soft);font-size:14.5px}
.pf span{display:inline-flex;align-items:center;gap:7px}.pf img{width:18px;height:18px;opacity:.72}
/* Footer sits at its approved size; only the top margin belongs to the page. */
.pb-foot{margin-top:0}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}
@media(max-width:720px){
 body{font-size:17px;line-height:1.68}
 .nav{height:56px;padding:0 8px 0 18px}.nav img{width:98px}.nav-links{display:none}
 .nav .ring-btn{padding:6px 16px;font-size:14.5px}
 .bar .ring-btn{padding:9px 16px;font-size:14.5px}
 .bar.stack{flex-wrap:wrap;padding:0;border:0;border-radius:0;background:none;box-shadow:none;gap:12px}
 .bar.stack .bar-field{display:flex;align-items:center;gap:12px;flex:1 0 100%;min-width:0;padding:6px 8px 6px 20px;border:1px solid #e3e4ee;border-radius:99px;background:#fff;box-shadow:0 18px 36px -20px rgba(84,84,214,.42)}
 .bar.stack .ring-btn{margin:0 auto;padding:12px 26px}
}
.bar-field{display:contents}
@media(max-width:720px){.bar.stack .bar-field{display:flex}}

/* Added for the real pages. */
.pb-cite{font-size:.72em;line-height:0;margin-left:1px}.pb-cite a{font-weight:700;text-decoration:none;padding:0 2px;color:var(--link)}
.pb-hp{position:absolute!important;left:-9999px!important;width:1px;height:1px}
.news-form{position:relative;width:100%}
.pb-sub-msg{margin:10px 0 0;font-size:14px;line-height:1.4;color:#2f7a45;text-align:center}.pb-sub-msg:empty{display:none}.pb-sub-msg.is-bad{color:#b4233c}
.pb-preview{margin:14px 0 0;padding:10px 16px;border-radius:12px;background:#fff7e0;color:#6a5100;font-size:14.5px;text-align:center}
.pb-deep{display:inline-flex;align-items:center;gap:5px;height:24px;padding:0 9px 0 7px;border:1.5px solid transparent;border-radius:99px;background:linear-gradient(#fff,#fff) padding-box,var(--ring) border-box;color:var(--soft);font-size:12px;font-weight:600;line-height:1;white-space:nowrap}
.pb-deep svg{flex:none}
.byline .pb-deep{margin-left:2px}
.byline .av{width:44px;height:44px;border-radius:50%;object-fit:cover;padding:2px;background:var(--ring)}
blockquote{margin:1.6em 0;padding:2px 0 2px 20px;border-left:3px solid #cdbdf6;color:var(--ink);font-weight:500}
strong{font-weight:700;color:var(--ink)}
figcaption span{display:block}
.art{display:block;flex:none}
.pillar{margin:1.6em 0 0;font-size:15.5px;color:var(--soft)}.pillar a{color:var(--link);font-weight:600;text-underline-offset:3px}
.pb-foot-min{clear:both}
/* cookie banner (public/legal.js) */
.cookie-banner{position:fixed;left:50%;bottom:16px;transform:translateX(-50%);z-index:40;display:flex;align-items:center;gap:16px;width:min(620px,calc(100% - 24px));padding:12px 16px;border:1px solid var(--rule);border-radius:18px;background:#fff;box-shadow:0 14px 40px -14px rgba(20,20,60,.35);font-size:14px;line-height:1.45}
.cookie-banner p{margin:0}.cookie-banner div{display:flex;gap:8px;flex:none}
.cookie-banner button{all:unset;cursor:pointer;padding:7px 14px;border-radius:99px;font-size:14px;font-weight:600;border:1px solid #dcdaea}
.cookie-banner button[data-c="all"]{border:2px solid transparent;background:linear-gradient(#fff,#fff) padding-box,var(--ring) border-box}
.cookie-banner button:focus-visible{outline:3px solid #5a3fe0;outline-offset:3px}
@media(max-width:720px){.cookie-banner{flex-direction:column;align-items:stretch}.is-guide .pb-foot{padding-bottom:78px}}
/* Long unbreakable strings (spreadsheet formulas, addresses) wrap instead of stretching the whole page on a phone. */
.col p,.col li,.col td,.col th,.col blockquote,.col figcaption,.paper p,.paper li,.paper td,.paper th,.paper blockquote,.paper figcaption,.faq-a,.sources li{overflow-wrap:anywhere}