/* guides-hub.css: Guides index, course "Free guides" block and guide-page "More guides" block (guides revamp, Oct 2026) */
:root{--gh-a1:#5b3df5;--gh-a2:#0891b2;--gh-soft:rgba(91,61,245,.08);--gh-ring:rgba(91,61,245,.22)}
[data-theme="dark"]{--gh-a1:#9a80ff;--gh-a2:#22d3ee;--gh-soft:rgba(154,128,255,.14);--gh-ring:rgba(154,128,255,.3)}
:root{--gh-grad:linear-gradient(135deg,#6d4dff,#0ea5c6)}
[data-theme="dark"]{--gh-grad:linear-gradient(135deg,#7c5cff,#22d3ee)}
.gh-hub [hidden],.gh-course-block [hidden]{display:none!important}
/* hero */
.gh-hero{position:relative;padding:26px clamp(18px,3vw,30px) 22px;border-radius:20px;border:1px solid var(--line);background:radial-gradient(90% 120% at 0% 0%,rgba(124,92,255,.13),transparent 60%),radial-gradient(90% 120% at 100% 100%,rgba(34,211,238,.13),transparent 60%),var(--bg);margin:0 0 18px;overflow:hidden;box-shadow:var(--shadow)}
.gh-hero::before{content:"";position:absolute;inset:0 0 auto 0;height:4px;background:var(--gh-grad)}
.gh-eyebrow{display:inline-block;font:700 12.5px var(--font-h);letter-spacing:.06em;text-transform:uppercase;color:var(--gh-a1);margin:0 0 6px}
.content .gh-hero h1{margin:0 0 8px;font-size:clamp(30px,4.4vw,44px);line-height:1.1;letter-spacing:-.02em;border:0;padding:0}
.gh-grad{background:var(--gh-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.content .gh-hero .lead{margin:0 0 14px;max-width:740px}
.gh-stats{display:flex;flex-wrap:wrap;gap:6px 20px;margin:0 0 16px;font-size:15px;color:var(--muted)}
.gh-stats b{color:var(--head);font:800 19px var(--font-h);margin-right:4px}
.gh-search{position:relative;max-width:660px}
.gh-search input{width:100%;box-sizing:border-box;font:inherit;font-size:16.5px;padding:13px 18px 13px 48px;border-radius:999px;border:1.5px solid var(--line);background:var(--bg);color:var(--text);box-shadow:var(--shadow);-webkit-appearance:none;appearance:none}
.gh-search input:focus{outline:none;border-color:var(--gh-a1);box-shadow:0 0 0 4px var(--gh-ring)}
.gh-search svg{position:absolute;left:17px;top:50%;transform:translateY(-50%);color:var(--muted);pointer-events:none}
.gh-count{display:block;margin:8px 6px 0;font-size:14.5px;color:var(--muted);min-height:1.3em}
.gh-empty{padding:18px;border:1px dashed var(--line);border-radius:14px;color:var(--muted);margin:10px 0 20px}
/* sticky topic chips */
.gh-chips{position:sticky;top:var(--topbar-h);z-index:20;display:flex;gap:6px;overflow-x:auto;padding:10px 2px;margin:0 0 10px;background:var(--bg);border-bottom:1px solid var(--line);scrollbar-width:none;-webkit-overflow-scrolling:touch}
.gh-chips::-webkit-scrollbar{display:none}
.content .gh-chips a{flex:none;display:inline-flex;align-items:center;gap:7px;padding:6px 11px;border-radius:999px;border:1px solid var(--line);background:var(--bg2);color:var(--text);text-decoration:none;font:600 14px var(--font-h);white-space:nowrap;transition:border-color .2s,background .2s,color .2s}
.gh-chips a b{font-size:12px;padding:1px 6px;border-radius:999px;background:var(--gh-soft);color:var(--gh-a1)}
.content .gh-chips a:hover{border-color:var(--gh-a1)}
.content .gh-chips a.on{background:var(--gh-grad);border-color:transparent;color:#fff}
.gh-chips a.on b{background:rgba(255,255,255,.25);color:#fff}
/* topic tiles */
.content .gh-tiles{list-style:none;padding:0;margin:4px 0 26px;display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px}
.content .gh-tiles li{margin:0}
.content .gh-tile a{position:relative;display:flex;flex-direction:column;gap:7px;height:100%;box-sizing:border-box;padding:16px 18px;border-radius:16px;border:1px solid var(--line);background:var(--bg);text-decoration:none;color:var(--text);box-shadow:var(--shadow);transition:transform .2s,border-color .2s,box-shadow .2s;overflow:hidden}
.gh-tile a::before{content:"";position:absolute;inset:0 0 auto 0;height:3px;background:var(--gh-grad)}
.content .gh-tile a:hover,.content .gh-tile a:focus-visible{transform:translateY(-3px);border-color:var(--gh-a1);box-shadow:0 16px 34px -18px rgba(91,61,245,.55)}
.gh-ic{flex:none;display:inline-grid;place-items:center;width:40px;height:40px;border-radius:12px;background:var(--gh-soft);color:var(--gh-a1);border:1px solid var(--gh-ring)}
.gh-tile-top{display:flex;align-items:center;gap:12px}
.gh-tile-top b{display:block;font:700 18px/1.2 var(--font-h);color:var(--head)}
.gh-tile-top small{display:block;font-size:13.5px;color:var(--muted)}
.gh-tile p{margin:0;font-size:14.5px;color:var(--muted);line-height:1.5}
.gh-go{margin-top:auto;font:700 14.5px var(--font-h);color:var(--gh-a1)}
/* section headings */
.content .gh-h2{font-size:22px;margin:8px 0 4px;border:0;padding:0}
.gh-sub{margin:0 0 6px;color:var(--muted);font-size:15px}
/* topic sections */
.gh-topic{margin:30px 0 8px;scroll-margin-top:calc(var(--topbar-h) + 66px)}
.gh-alias{display:block;position:relative;top:calc(-1 * (var(--topbar-h) + 66px));visibility:hidden;height:0}
.gh-topic-head{display:flex;flex-wrap:wrap;align-items:center;gap:12px 16px;padding:16px 18px;border-radius:16px;background:linear-gradient(135deg,rgba(124,92,255,.11),rgba(34,211,238,.11));border:1px solid var(--line)}
.gh-topic-head>div{flex:1 1 260px;min-width:0}
.content .gh-topic-head h2{margin:0;padding:0;border:0;font-size:24px;line-height:1.2}
.gh-topic-head p{margin:3px 0 0;font-size:15px;color:var(--muted);line-height:1.45}
.gh-btn,.content a.gh-btn{display:inline-flex;align-items:center;gap:6px;padding:9px 16px;border-radius:999px;background:var(--gh-grad);color:#fff;font:700 14.5px var(--font-h);text-decoration:none;box-shadow:0 8px 22px -12px rgba(91,61,245,.75);transition:transform .2s,box-shadow .2s;white-space:nowrap}
.content a.gh-btn:hover{transform:translateY(-1px);color:#fff}
.content a.gh-btn.ghost{background:none;color:var(--gh-a1);border:1.5px solid var(--gh-a1);box-shadow:none;padding:7.5px 14.5px}
.gh-group{margin:20px 0 4px}
.content .gh-group h3{margin:0;font-size:18.5px;color:var(--head);display:flex;flex-wrap:wrap;align-items:center;gap:8px;border:0;padding:0}
.gh-group h3 small,.gh-n{font:700 12.5px var(--font-h);padding:1px 8px;border-radius:999px;background:var(--gh-soft);color:var(--gh-a1)}
.gh-gdesc{margin:2px 0 0;font-size:14.5px;color:var(--muted)}
/* guide cards */
.content .gh-cards{list-style:none;padding:0;margin:10px 0 6px;display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:12px}
.content .gh-cards li{margin:0}
.gh-card{position:relative;display:flex;flex-direction:column;border:1px solid var(--line);border-radius:14px;background:var(--bg);transition:transform .2s,border-color .2s,box-shadow .2s}
.gh-card:hover,.gh-card:focus-within{transform:translateY(-2px);border-color:var(--gh-a1);box-shadow:0 14px 30px -20px rgba(91,61,245,.55)}
.content .gh-card>a{display:flex;flex-direction:column;gap:5px;padding:13px 15px 12px;text-decoration:none;color:var(--text);flex:1}
.gh-card>a b{font:700 16px/1.32 var(--font-h);color:var(--head)}
.gh-card .gc-d{font-size:14px;line-height:1.5;color:var(--muted)}
.gh-k{font:700 11.5px var(--font-h);letter-spacing:.05em;text-transform:uppercase;color:var(--gh-a2)}
.gh-langs{display:flex;flex-wrap:wrap;gap:6px;align-items:center;padding:0 15px 12px;margin-top:-4px;font-size:12.5px;color:var(--muted)}
.content .gh-langs a{padding:1px 9px;border-radius:999px;border:1px solid var(--line);text-decoration:none;color:var(--text);font-weight:600}
.content .gh-langs a:hover{border-color:var(--gh-a1);color:var(--gh-a1)}
.gh-foot-note{margin:28px 0 8px}
/* sidebar topic list on the guides index */
.gh-tree .gh-n{float:right;margin-top:2px}
/* course page block */
.gh-course-block{margin:26px 0 30px;padding:20px clamp(16px,2.6vw,24px) 18px;border-radius:18px;border:1px solid var(--line);background:radial-gradient(90% 140% at 0% 0%,rgba(124,92,255,.10),transparent 60%),radial-gradient(90% 140% at 100% 100%,rgba(34,211,238,.10),transparent 60%),var(--bg2);position:relative;overflow:hidden}
.gh-course-block::before{content:"";position:absolute;inset:0 0 auto 0;height:4px;background:var(--gh-grad)}
.gh-cb-head{display:flex;flex-wrap:wrap;align-items:flex-end;gap:8px 16px;margin-bottom:4px}
.gh-cb-head>div{flex:1 1 300px}
.content .gh-cb-head h2{margin:0;padding:0;border:0;font-size:23px}
.gh-cb-head p{margin:3px 0 0;color:var(--muted);font-size:15px}
.gh-cb-foot{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin:12px 0 0}
/* guide page: More <topic> guides */
.related.gh-more{padding:18px 18px 16px}
.content .related.gh-more h2{font-size:20px;margin:0 0 4px}
.gh-more-sub{margin:0 0 10px;font-size:14.5px;color:var(--muted)}
.content .gh-more-list{list-style:none;padding:0;margin:6px 0 14px;display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:8px}
.content .gh-more-list li{margin:0}
.content .gh-more-list a{display:flex;gap:8px;align-items:flex-start;height:100%;box-sizing:border-box;padding:10px 13px;border:1px solid var(--line);border-radius:12px;background:var(--bg);text-decoration:none;color:var(--head);font-weight:600;font-size:15px;line-height:1.38;transition:border-color .2s,transform .2s}
.gh-more-list a::before{content:"\2192";color:var(--gh-a1);font-weight:800}
.content .gh-more-list a:hover{border-color:var(--gh-a1);transform:translateY(-1px)}
.gh-more-cta{display:flex;flex-wrap:wrap;gap:10px;margin:0}
@media (max-width:640px){
 .gh-hero{padding:20px 16px 16px;border-radius:16px}
 .gh-stats{gap:4px 14px;font-size:14px}.gh-stats b{font-size:17px}
 .gh-tiles{grid-template-columns:1fr 1fr!important;gap:10px!important}
 .content .gh-tile a{padding:13px 13px;border-radius:14px}
 .gh-tile p,.gh-tile .gh-go{display:none}
 .gh-tile-top{flex-direction:column;align-items:flex-start;gap:8px}
 .gh-topic-head{padding:14px}
 .gh-topic-head .gh-btn{width:100%;justify-content:center}
 .content .gh-cards{grid-template-columns:1fr}
 .gh-cards-sm li:nth-child(n+4){display:none}
 .gh-more-cta .gh-btn{width:100%;justify-content:center;white-space:normal;text-align:center}
}
@media (prefers-reduced-motion:reduce){.gh-card,.gh-tile a,.gh-btn,.gh-more-list a{transition:none!important;transform:none!important}}