/*
 * Category hub layout — /blog/category/ai-services/ (category-ai-services.php).
 * Ported from the approved static mock (blog-category-ai-services.html),
 * 2026-10-06. Loaded only by that template, after page-blog.css.
 * Every class is prefixed bch-/bg-/ce- so nothing else on the blog is affected.
 */
.bg-cathero{position:relative;overflow:hidden;background:linear-gradient(180deg,#fff,#faf9fd)}
.bg-cathero .wrap{position:relative;z-index:2}
.bg-catlabel{display:inline-flex;align-items:center;gap:8px;font-family:var(--disp);font-weight:800;font-size:.8rem;color:#fff;background:linear-gradient(135deg,var(--purple),var(--pink));border-radius:999px;padding:8px 16px}
.bg-cathero h1{font-family:var(--disp);font-weight:900;letter-spacing:-.02em;font-size:clamp(2.1rem,4vw,3rem);color:var(--ink);margin:16px 0 14px;max-width:20ch}
.bg-cathero p{font-size:1.1rem;line-height:1.6;color:var(--ink-2);max-width:60ch;margin:0 0 22px}
.bg-cat-down{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px 18px;text-decoration:none;box-shadow:0 12px 34px -20px rgba(30,20,60,.2)}
.bg-cat-down b{font-family:var(--disp);font-weight:800;font-size:.9rem;color:var(--ink)}
.bg-cat-down span{font-size:.78rem;color:var(--ink-3);display:block}
.bg-cat-down .ar{margin-left:6px;color:var(--pink);font-weight:800}
.bg-cathero::after{content:"";position:absolute;top:-10%;right:-4%;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(108,77,242,.12),transparent 65%);filter:blur(50px);pointer-events:none;z-index:0}
.bg-cathero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(108,77,242,.07) 1.2px,transparent 1.2px);background-size:24px 24px;-webkit-mask-image:radial-gradient(50% 55% at 78% 45%,#000,transparent 78%);mask-image:radial-gradient(50% 55% at 78% 45%,#000,transparent 78%);opacity:.5;pointer-events:none}
.bg-feat-tag{align-self:flex-start;font-size:.68rem;font-weight:800;text-transform:uppercase;letter-spacing:.05em;color:#fff;background:rgba(10,34,31,.35);backdrop-filter:blur(6px);border-radius:8px;padding:6px 12px}
.bg-av{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,var(--pink),var(--purple));display:grid;place-items:center;font-family:var(--disp);font-weight:800;color:#fff;font-size:.72rem;flex:none}
.bg-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;max-width:1100px;margin:0 auto}
.bg-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:0 16px 44px -26px rgba(30,20,60,.18);transition:.2s;text-decoration:none}
.bg-card:hover{transform:translateY(-5px);box-shadow:0 30px 60px -30px rgba(230,0,126,.24);border-color:#f6cfe4}
.bg-card-top{height:130px;position:relative;display:flex;align-items:flex-end;padding:16px}
.bg-card-top .bg-feat-tag{background:rgba(10,34,31,.35)}
.bg-card-body{padding:20px;display:flex;flex-direction:column;flex:1}
.bg-card-cat{font-size:.68rem;font-weight:800;text-transform:uppercase;letter-spacing:.04em}
.bg-card h3{font-family:var(--disp);font-weight:800;font-size:1.05rem;color:var(--ink);margin:7px 0 9px;line-height:1.3}
.bg-card p{font-size:.86rem;color:var(--ink-2);line-height:1.55;margin:0 0 14px;flex:1}
.bg-card-meta{display:flex;align-items:center;gap:8px;font-size:.74rem;color:var(--ink-3);padding-top:12px;border-top:1px solid var(--line)}
.bg-card-meta .bg-av{width:26px;height:26px;font-size:.62rem}
.ce-intro{max-width:820px;margin:0 auto}
.ce-intro h2{font-family:var(--disp);font-weight:800;font-size:1.6rem;color:var(--ink);margin:0 0 14px}
.ce-intro p{font-size:1.06rem;line-height:1.75;color:var(--ink-2);margin:0 0 16px}
.ce-intro a{color:var(--pink);font-weight:600}
.ce-author{display:flex;align-items:center;gap:16px;flex-wrap:wrap;max-width:820px;margin:22px auto 0;background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px 22px;box-shadow:0 14px 40px -26px rgba(30,20,60,.16)}
.ce-author .av{width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,var(--pink),var(--purple));display:grid;place-items:center;font-family:var(--disp);font-weight:800;color:#fff;font-size:1.1rem;flex:none}
.ce-author-txt b{font-family:var(--disp);font-weight:800;color:var(--ink)}
.ce-author-txt a{color:var(--pink);font-weight:600}
.ce-author-txt .m{font-size:.85rem;color:var(--ink-3);margin-top:2px}
.ce-author-rev{margin-left:auto;display:flex;align-items:center;gap:7px;font-size:.8rem;color:var(--ink-3)}
.ce-author-rev svg{color:var(--green)}
/* topic FAQ */
.ce-faq{max-width:820px;margin:0 auto}
.ce-faq details{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:10px;overflow:hidden}
.ce-faq summary{font-family:var(--disp);font-weight:700;font-size:1rem;color:var(--ink);padding:16px 18px;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center}
.ce-faq summary::-webkit-details-marker{display:none}
.ce-faq summary::after{content:"+";font-size:1.3rem;color:var(--pink);font-weight:400}
.ce-faq details[open] summary::after{content:"–"}
.ce-faq .a{padding:0 18px 16px;font-size:.96rem;line-height:1.65;color:var(--ink-2)}
.ce-related{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;max-width:1000px;margin:0 auto}
.ce-rel-card{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px 20px;text-decoration:none;box-shadow:0 14px 40px -26px rgba(30,20,60,.16);transition:.2s;position:relative;overflow:hidden}
.ce-rel-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--rc)}
.ce-rel-card:hover{transform:translateY(-4px);border-color:color-mix(in srgb,var(--rc) 40%,var(--line));box-shadow:0 26px 54px -28px color-mix(in srgb,var(--rc) 40%,rgba(30,20,60,.3))}
.ce-rel-ic{width:44px;height:44px;border-radius:12px;background:color-mix(in srgb,var(--rc) 13%,#fff);color:var(--rc);display:grid;place-items:center;flex:none}
.ce-rel-card b{font-family:var(--disp);font-weight:800;font-size:.98rem;color:var(--ink);display:block;line-height:1.15}
.ce-rel-card span{font-size:.78rem;color:var(--ink-3)}
.ce-rel-card .go{margin-left:auto;color:var(--rc);font-weight:800;flex:none}
/* ===== authority sources ===== */
.ce-sources2{max-width:840px;margin:26px auto 0;background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px;box-shadow:0 18px 46px -30px rgba(30,20,60,.2)}
.ce-src-head{display:flex;align-items:center;gap:10px;padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:16px}
.ce-src-head .ic{width:38px;height:38px;border-radius:11px;background:var(--rose);color:var(--pink);display:grid;place-items:center;flex:none}
.ce-src-head b{font-family:var(--disp);font-weight:800;font-size:1.02rem;color:var(--ink);display:block}
.ce-src-head span{font-size:.8rem;color:var(--ink-3)}
.ce-src-item{display:flex;align-items:flex-start;gap:12px;padding:11px 0;border-bottom:1px solid var(--line-2)}
.ce-src-item:last-child{border-bottom:none}
.ce-src-badge{width:30px;height:30px;border-radius:8px;display:grid;place-items:center;flex:none;font-family:var(--disp);font-weight:800;font-size:.7rem;color:#fff}
.ce-src-badge.g{background:linear-gradient(135deg,#4285F4,#34A853)}
.ce-src-badge.m{background:#0866ff}
.ce-src-badge.f{background:#0a2540}
.ce-src-badge.w{background:#005a9c}
.ce-src-txt b{font-family:var(--disp);font-weight:700;font-size:.9rem;color:var(--ink);display:block;line-height:1.3}
.ce-src-txt a{font-size:.82rem;color:var(--pink);word-break:break-word}
.ce-src-txt .pub{font-size:.74rem;color:var(--ink-3)}
/* ===== commercial service band ===== */
.ce-commercial{max-width:1040px;margin:0 auto;background:linear-gradient(135deg,var(--forest),var(--forest-2));border-radius:var(--r-xl);padding:0;overflow:hidden;display:grid;grid-template-columns:1.3fr .7fr;box-shadow:0 40px 90px -40px rgba(10,34,31,.6)}
.ce-comm-l{padding:38px}
.ce-comm-l .k{font-size:.7rem;font-weight:800;text-transform:uppercase;letter-spacing:.06em;color:var(--spring);display:block;margin-bottom:10px}
.ce-comm-l h2{font-family:var(--disp);font-weight:800;font-size:1.7rem;color:#fff;margin:0 0 12px;line-height:1.15}
.ce-comm-l p{font-size:1rem;color:rgba(255,255,255,.78);line-height:1.6;margin:0 0 20px;max-width:44ch}
.ce-comm-feats{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}
.ce-comm-feat{display:inline-flex;align-items:center;gap:6px;font-size:.78rem;font-weight:600;color:#fff;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);border-radius:999px;padding:6px 12px}
.ce-comm-feat svg{color:var(--spring);width:13px;height:13px}
.ce-comm-ctas{display:flex;gap:12px;flex-wrap:wrap}
.ce-comm-ctas .btn.p{background:var(--pink);color:#fff}
.ce-comm-ctas .btn.g{background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.2)}
.ce-comm-r{background:rgba(255,255,255,.05);border-left:1px solid rgba(255,255,255,.1);padding:38px 28px;display:flex;flex-direction:column;justify-content:center;gap:18px}
.ce-comm-stat b{font-family:var(--disp);font-weight:900;font-size:2rem;color:#fff;display:block;line-height:1}
.ce-comm-stat span{font-size:.78rem;color:rgba(255,255,255,.6)}
.ce-comm-rev{display:flex;align-items:center;gap:8px;padding-top:16px;border-top:1px solid rgba(255,255,255,.12)}
.ce-comm-rev .g{width:22px;height:22px;flex:none}
.ce-comm-rev b{font-family:var(--disp);font-weight:800;color:#fff;font-size:.95rem}
.ce-comm-rev .st{color:var(--yellow);font-size:.7rem;letter-spacing:.5px;display:block}
.ce-comm-rev small{font-size:.66rem;color:rgba(255,255,255,.6)}
/* ===== hero trust bar (stronger EEAT) ===== */
.ce-herotrust{display:flex;flex-wrap:wrap;gap:10px 16px;align-items:center;margin-top:22px}
.ce-ht{display:inline-flex;align-items:center;gap:7px;font-size:.78rem;font-weight:600;color:var(--ink)}
.ce-ht svg{color:#0a8f52;width:15px;height:15px;flex:none}
.ce-ht-div{width:1px;height:15px;background:var(--line-2)}
@media(max-width:860px){.ce-related{grid-template-columns:1fr}.ce-commercial{grid-template-columns:1fr}.ce-comm-r{border-left:none;border-top:1px solid rgba(255,255,255,.1)}}
.bch-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center}
.bch-grid h1{margin-top:16px}
.bch-grid .bg-cat-down{margin-top:6px}
/* right proof panel */
.bch-panel{position:relative}
.bch-emblem{position:absolute;top:-26px;right:-14px;width:88px;height:88px;border-radius:50%;background:linear-gradient(135deg,var(--purple),var(--pink));display:grid;place-items:center;box-shadow:0 24px 50px -16px rgba(108,77,242,.55);z-index:3;color:#fff}
.bch-card{position:relative;background:#fff;border-radius:24px;box-shadow:0 46px 90px -34px rgba(30,20,60,.3),0 12px 28px -16px rgba(30,20,60,.12);padding:26px;z-index:2}
.bch-card::before{content:"";position:absolute;inset:0;border-radius:24px;padding:1.5px;background:linear-gradient(145deg,rgba(108,77,242,.4),rgba(230,0,126,.28) 50%,transparent 74%);-webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none}
.bch-author{display:flex;align-items:center;gap:13px;padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:16px}
.bch-author .av{width:52px;height:52px;border-radius:15px;background:linear-gradient(135deg,var(--pink),var(--purple));display:grid;place-items:center;font-family:var(--disp);font-weight:800;color:#fff;font-size:1.15rem;flex:none}
.bch-author b{font-family:var(--disp);font-weight:800;font-size:1rem;color:var(--ink);display:block;line-height:1.1}
.bch-author .role{font-size:.8rem;color:var(--purple);font-weight:600}
.bch-author .rv{font-size:.72rem;color:var(--ink-3);margin-top:3px;display:flex;align-items:center;gap:5px}
.bch-author .rv svg{color:var(--green);width:12px;height:12px}
.bch-rating{display:flex;align-items:center;gap:11px;padding:14px;background:var(--lilac);border-radius:14px;margin-bottom:14px}
.bch-rating .g{width:34px;height:34px;flex:none}
.bch-rating b{font-family:var(--disp);font-weight:800;font-size:1.3rem;color:var(--ink);line-height:1}
.bch-rating .st{color:var(--yellow);letter-spacing:1px;font-size:.8rem;display:block}
.bch-rating small{font-size:.72rem;color:var(--ink-3)}
.bch-badges{display:flex;flex-wrap:wrap;gap:8px}
.bch-badge{display:inline-flex;align-items:center;gap:6px;font-size:.74rem;font-weight:700;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 12px}
.bch-badge svg{width:13px;height:13px;color:var(--green)}
@media(max-width:900px){.bch-grid{grid-template-columns:1fr;gap:34px}.bch-panel{margin-top:6px}}

/* ===== WordPress additions (not in the static mock) ===== */
/* real featured image inside the card top, tag stays readable on top */
.bg-card-top{overflow:hidden}
.bg-card-top img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.bg-card-top.has-img::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(10,34,31,.45))}
.bg-card-top .bg-feat-tag{position:relative;z-index:1}
.bg-grid{align-items:stretch}
@media(min-width:881px) and (max-width:1060px){.bg-grid{grid-template-columns:repeat(2,1fr)}}
.bg-empty{max-width:640px;margin:0 auto;text-align:center;color:var(--ink-2)}
.bg-hub-pager{margin-top:30px}
.bg-hub-pager .nav-links{display:flex;justify-content:center;flex-wrap:wrap;gap:8px}
@media(max-width:560px){.ce-author-rev{margin-left:0}.bch-emblem{width:64px;height:64px;top:-18px;right:-4px}.ce-comm-l,.ce-comm-r{padding:26px 22px}}