/* Shared layout for the generated SEO pages (seo/build.js). Colours come from brand.css only,
 * so light and dark follow the OS exactly like /courses and /video-ai-guru. */
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0}
a{color:inherit}
img,video{display:block;max-width:100%;height:auto}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-999px;top:8px;background:var(--surface);padding:8px 12px;border-radius:8px;z-index:50}
.skip:focus{left:8px}
:focus-visible{outline:2px solid var(--accent-text);outline-offset:3px;border-radius:6px}

/* header */
.top{position:sticky;top:0;z-index:20;backdrop-filter:blur(10px);background:var(--bar);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:15px;letter-spacing:.01em;text-decoration:none}
.mark{width:40px;height:40px;object-fit:contain;filter:brightness(0) saturate(100%) invert(47%) sepia(96%) saturate(374%) hue-rotate(222deg) brightness(58%) contrast(179%)}
.links{display:flex;gap:6px;margin-left:auto}
.links a{display:inline-flex;align-items:center;min-height:36px;padding:0 10px;font-size:14px;font-weight:600;color:var(--muted);text-decoration:none;border-radius:8px}
.links a:hover{color:var(--ink)}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 24px;border-radius:10px;font-weight:600;font-size:15.5px;text-decoration:none;color:#fff;background:linear-gradient(135deg,var(--accent-fill),var(--accent-fill-2));box-shadow:var(--sh-2);transition:transform .12s ease,filter .18s ease}
.btn:hover{transform:translateY(-1px);filter:brightness(1.07)}
.btn.sm{min-height:36px;padding:0 16px;font-size:14px}
.btn.inv{background:var(--ink-on-dark);color:var(--ground-dark);box-shadow:none}
.ghost{display:inline-flex;align-items:center;min-height:46px;padding:0 6px;font-weight:600;font-size:15px;color:var(--accent-text);text-decoration:none}
.ghost:hover{text-decoration:underline}

/* breadcrumb + hero */
.crumb{display:flex;flex-wrap:wrap;gap:6px;padding-top:22px;font-size:13px;color:var(--muted)}
.crumb a{text-decoration:none}.crumb a:hover{color:var(--ink)}
.hero{padding:22px 0 8px}
.hero .two{display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center}
h1{margin:0;font-size:clamp(26px,5vw,44px);line-height:1.06;letter-spacing:-.025em;font-weight:600;max-width:20ch}
.lead{margin:18px 0 0;font-size:clamp(15.5px,2vw,19px);color:var(--muted);max-width:62ch;line-height:1.55}
.cta-row{margin-top:26px;display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.cost{margin:14px 0 0;font-size:14px;color:var(--muted)}
.single{margin:0}.single img{border-radius:var(--r-room);border:1px solid var(--border);max-height:520px;width:auto;margin:0 auto;box-shadow:var(--sh-2)}
.hero>.wrap:last-child{margin-top:30px}

/* media */
.pair{margin:22px 0;display:grid;grid-template-columns:1fr 1fr;gap:12px}
.pair>div{position:relative;border-radius:var(--r-room);overflow:hidden;border:1px solid var(--border);background:var(--surface2)}
.pair img{width:100%;aspect-ratio:3/2;object-fit:cover}
.pair span{position:absolute;left:10px;top:10px;padding:3px 9px;border-radius:999px;font-size:12px;font-weight:600;color:#fff;background:var(--scrim-on-image)}
figcaption{grid-column:1/-1;font-size:13px;color:var(--muted);margin-top:2px}
.vid{margin:22px 0}.vid video{width:100%;max-height:520px;border-radius:var(--r-room);background:var(--ground-dark);border:1px solid var(--border)}
.vid figcaption{margin-top:8px}

/* body */
.prose{padding-top:20px;padding-bottom:30px}
.blk{margin:46px 0}
.blk h2{margin:0 0 12px;font-size:clamp(19px,2.6vw,26px);line-height:1.15;letter-spacing:-.02em;font-weight:600}
.blk p,.list{max-width:70ch;font-size:15.5px;line-height:1.65}
.blk p{margin:0 0 14px}
.blk p a,.list a,.faq a{color:var(--accent-text);text-underline-offset:3px}
.list{margin:10px 0;padding-left:20px}.list li{margin:6px 0}
.steps{list-style:none;counter-reset:s;margin:14px 0 0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.steps li{counter-increment:s;padding:18px;border:1px solid var(--border);border-radius:var(--r-room);background:var(--surface)}
.steps li:before{content:counter(s);display:grid;place-items:center;width:30px;height:30px;margin-bottom:10px;border-radius:50%;background:var(--accentSoft);color:var(--accent-text);font-weight:600}
.steps b{display:block;margin-bottom:4px}.steps span{color:var(--muted);font-size:14px;line-height:1.55}

.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px;margin-top:16px}
.card{display:flex;flex-direction:column;gap:6px;padding:18px;border:1px solid var(--border);border-radius:var(--r-room);background:var(--surface);text-decoration:none}
.card.link:hover{border-color:var(--accent-text)}
.card h3{margin:0;font-size:15.5px;font-weight:600;line-height:1.25}
.card p{margin:0;font-size:13px;line-height:1.5;color:var(--muted)}
.card-top{display:flex;justify-content:space-between;gap:10px;align-items:flex-start}
.chip{flex:none;padding:2px 9px;border-radius:999px;font-size:12px;font-weight:600;color:var(--accent-text);background:var(--accentSoft);white-space:nowrap}
.more{margin-top:auto;padding-top:6px;font-size:14px;font-weight:600;color:var(--accent-text);text-decoration:none}
a.more:hover{text-decoration:underline}

.tbl{overflow-x:auto;margin:14px 0;border:1px solid var(--border);border-radius:var(--r-room);background:var(--surface)}
table{border-collapse:collapse;width:100%;font-size:15px}
th,td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--border);vertical-align:top}
th{font-size:12.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:600}
tr:last-child td{border-bottom:0}td:not(:first-child){font-variant-numeric:tabular-nums;white-space:nowrap}

.faq details{border-bottom:1px solid var(--border);padding:14px 0;max-width:760px}
.faq summary{cursor:pointer;font-weight:600;font-size:15.5px;list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";color:var(--muted);font-size:1.4em;line-height:1}
.faq details[open] summary:after{content:"\00d7"}
.faq details p{margin:10px 0 0;color:var(--muted);font-size:15px}

/* closing band + footer */
.band{margin-top:30px;padding:64px 0;text-align:center;color:var(--ink-on-accent);background:linear-gradient(135deg,var(--accent-fill),var(--accent-fill-2))}
.band h2{margin:0;font-size:clamp(19px,2.6vw,26px);font-weight:600;letter-spacing:-.02em;color:#fff}
.band p{margin:12px auto 26px;max-width:46ch;color:var(--ink-on-accent)}
footer{padding:44px 0 32px;border-top:1px solid var(--border);background:var(--surface)}
.fgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
footer h4{margin:0 0 10px;font-size:12.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:600}
footer ul{list-style:none;margin:0;padding:0}footer li{margin:7px 0}
footer a{font-size:14px;text-decoration:none}footer a:hover{color:var(--accent-text);text-decoration:underline}
.fine{margin-top:30px;font-size:13px;color:var(--muted)}

@media (max-width:760px){
  .wrap{padding:0 16px}
  .links{display:none}.btn.sm{margin-left:auto}
  .hero .two{grid-template-columns:1fr;gap:22px}
  .steps,.fgrid{grid-template-columns:1fr}
  .pair{grid-template-columns:1fr}
  .blk{margin:36px 0}
}

/* long guides: byline, key takeaways, contents, callouts, sources */
.by{margin:14px 0 0;font-size:13px;color:var(--muted)}
.article>*{max-width:820px}
.article .blk p,.article .list{max-width:none}
.takeaways,.toc{margin:22px 0;padding:20px 22px;border:1px solid var(--border);border-radius:var(--r-room);background:var(--surface)}
.takeaways{background:var(--accentSoft)}
.takeaways b,.toc b{display:block;margin-bottom:8px;font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.takeaways ul{margin:0;padding-left:20px;font-size:15.5px;line-height:1.6}.takeaways li{margin:6px 0}
.toc ol{margin:0;padding-left:20px;columns:2;column-gap:32px;font-size:14px;line-height:1.7}
.toc a{text-decoration:none;color:var(--accent-text)}.toc a:hover{text-decoration:underline}
.blk{scroll-margin-top:84px}
.blk h3{margin:26px 0 8px;font-size:15.5px;font-weight:600;line-height:1.3}
.list.num{list-style:decimal}
.tnote{margin:-4px 0 16px;font-size:13px;color:var(--muted)}
.cite{font-size:11px;line-height:0;margin-left:1px}.cite a{color:var(--accent-text);text-decoration:none;padding:0 1px}
.callout{margin:22px 0;padding:16px 18px;border:1px solid var(--border);border-radius:var(--r-room);background:var(--surface-sunken-base,var(--surface2));font-size:15px;line-height:1.6}
.callout b{display:block;margin-bottom:4px;font-size:13px;text-transform:uppercase;letter-spacing:.05em}
.callout.warn b{color:var(--warn)}.callout.tip b{color:var(--ok)}.callout.note b{color:var(--accent-text)}
.callout p{margin:6px 0 0;font-size:15px}.callout a{color:var(--accent-text)}
.inline-cta{margin:30px 0;padding:20px 22px;display:flex;gap:20px;align-items:center;justify-content:space-between;border-radius:var(--r-room);color:var(--ink-on-accent);background:linear-gradient(135deg,var(--accent-fill),var(--accent-fill-2))}
.inline-cta b{display:block;font-size:17px;color:#fff}.inline-cta p{margin:6px 0 0;font-size:14.5px;line-height:1.55;color:var(--ink-on-accent)}
.inline-cta a.btn{flex:none;background:var(--ink-on-dark);color:var(--ground-dark);box-shadow:none}
.inline-cta p a{color:#fff;text-decoration:underline}
.sources ol{padding-left:22px;font-size:14px;line-height:1.6}.sources li{margin:8px 0}
.sources li span{color:var(--muted)}.sources a{color:var(--accent-text);overflow-wrap:anywhere}
@media (max-width:760px){.toc ol{columns:1}.inline-cta{flex-direction:column;align-items:flex-start}}