/* ============================================================
   PanPanTech Blog — centralized stylesheet
   Replaces per-element inline styles on /blog/ pages only.
   Design tokens follow the sitewide system:
   Space Grotesk (headings) / Instrument Sans (body) / IBM Plex Mono (labels)
   ============================================================ */

:root{
  --bg:#f5f6f8; --dark:#070a12; --ink:#0b0f1a; --body:#3d4453; --muted:#6a7386;
  --blue:#0e5fd9; --border:#e2e6ed; --line:#d8dde6; --mono-grey:#9aa3b5;
  --dk-muted:#5c6b85; --dk-blue:#8fa3c8; --hero-sub:#b9c4d8;
}
*{box-sizing:border-box}
html,body{max-width:100%;overflow-x:hidden;overflow-x:clip}
body{margin:0;font-family:"Instrument Sans",system-ui,sans-serif;color:var(--body);background:var(--bg)}
a{text-decoration:none}
.hero{background:var(--dark)}
.page{display:block}
.cta{background:var(--dark)}
img,video{max-width:100%}
.mono{font-family:"IBM Plex Mono",monospace}
.accent{color:var(--blue)}
.dark{background:var(--dark)}
.grow{flex:1 1 0%}
.mb56{margin-bottom:56px}
.mt56{margin-top:56px}
.mt8{margin-top:8px}
.wrap{max-width:1360px;margin:0 auto;padding:0 40px}

/* page shell (body wrapper div) */
.site{font-family:"Instrument Sans",system-ui,sans-serif;color:var(--body);background:var(--bg)}
.site-flex{min-height:100vh;display:flex;flex-direction:column}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:90;background:rgba(245,246,248,.88);backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:72px;gap:16px}
.logo{font-family:"Space Grotesk",sans-serif;font-size:21px;font-weight:700;letter-spacing:-.02em;color:var(--ink)}
.logo span{color:var(--blue)}
.site-nav{display:flex;align-items:center;gap:34px;overflow-x:auto;scrollbar-width:none}
.site-nav::-webkit-scrollbar{display:none}
.site-nav a{font-size:14px;font-weight:500;color:var(--body);white-space:nowrap}
.site-nav a:hover{color:var(--ink)}
.site-nav a.active{font-weight:600;color:var(--ink);border-bottom:2px solid var(--blue);padding-bottom:2px}
.btn-quote{display:inline-flex;align-items:center;gap:10px;background:var(--ink);color:#fff;font-size:13.5px;font-weight:600;padding:12px 22px;border-radius:999px;transition:background 180ms;white-space:nowrap}
.btn-quote:hover{background:var(--blue)}

/* ---------- article hero (dark, two-column) ---------- */
.hero .wrap,
.hero-grid{max-width:1360px;margin:0 auto;padding:72px 40px 88px;display:grid;grid-template-columns:1.2fr 1fr;gap:64px;align-items:center}
.crumbs{display:flex;flex-wrap:wrap;gap:10px;font-family:"IBM Plex Mono",monospace;font-size:12px;color:var(--dk-muted);margin-bottom:28px}
.crumbs a{color:var(--dk-muted)}
.crumbs a:hover{color:#fff}
.crumbs .here,.here{color:var(--dk-blue)}
.kicker{margin:0 0 16px;font-family:"IBM Plex Mono",monospace;font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--blue)}
.hero h1,.hero-grid h1{margin:0;font-family:"Space Grotesk",sans-serif;font-size:52px;line-height:1.05;letter-spacing:-.03em;font-weight:600;color:#fff;text-wrap:balance}
.hero-grid h1.sz48{font-size:48px;line-height:1.06}
.hero-answer{margin:22px 0 0;font-size:16.5px;line-height:1.65;color:var(--hero-sub)}
.hero-answer strong{color:#fff;font-weight:600}
.hero-meta{margin:24px 0 0;font-family:"IBM Plex Mono",monospace;font-size:12px;letter-spacing:.1em;color:var(--dk-muted)}
.hero-img,.hero-media{position:relative;border-radius:14px;overflow:hidden;border:1px solid rgba(255,255,255,.14);aspect-ratio:4/3}
.hero-img img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.bg-cover{position:absolute;inset:0;background-size:cover;background-position:center}

/* ---------- blog index hero ---------- */
.wrap-hero-list{max-width:1360px;margin:0 auto;padding:80px 40px 72px}
.wrap-hero-list h1,h1.sz54{margin:0;max-width:860px;font-family:"Space Grotesk",sans-serif;font-size:54px;line-height:1.05;letter-spacing:-.03em;font-weight:600;color:#fff;text-wrap:balance}
.wrap-hero-list .kicker{margin-bottom:20px}

/* ---------- article layout: sticky TOC + article ---------- */
.page .wrap,
.page-grid{max-width:1360px;margin:0 auto;padding:80px 40px 96px;display:grid;grid-template-columns:280px 1fr;gap:72px;align-items:start}
.toc{position:sticky;top:96px;display:flex;flex-direction:column;border-top:1px solid var(--line)}
.toc-label{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--mono-grey);padding:18px 0 12px}
.toc a{display:flex;gap:12px;align-items:baseline;padding:10px 0;font-size:14px;font-weight:500;color:var(--body);border-bottom:1px solid var(--border)}
.toc a:hover{color:var(--blue)}
.n,.toc a .n{font-family:"IBM Plex Mono",monospace;font-size:11px;color:var(--blue)}

article{max-width:760px;min-width:0}
article section{margin-top:56px}
article section:first-child{margin-top:0}
article h2,.mb56 h2,.mt56 h2{margin:0 0 20px;font-family:"Space Grotesk",sans-serif;font-size:30px;letter-spacing:-.02em;font-weight:600;color:var(--ink)}
article p,.mb56 p,.mt56 p{margin:0 0 16px;font-size:16.5px;line-height:1.75;color:var(--body)}
article p:last-child{margin-bottom:0}
p.m0{margin:0}
p.mb24{margin:0 0 24px}
article a.in{color:var(--blue);font-weight:500}
article a.in:hover{text-decoration:underline}
.answer-box{background:#fff;border:1px solid var(--border);border-left:3px solid var(--blue);border-radius:12px;padding:20px 24px;margin:0 0 20px;font-size:16.5px;line-height:1.7;color:var(--ink)}

/* ---------- div-grid comparison tables ---------- */
.tbl-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--border);border-radius:14px;background:#fff}
.tbl{min-width:640px}
.tbl-wrap{border:1px solid var(--border);border-radius:14px;overflow:hidden;background:#fff}
.tbl-head,.tbl-row{display:grid;gap:24px;padding:16px 24px}
.tbl-head{background:var(--ink)}
.tbl-head span{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--dk-blue)}
.tbl-row{padding:18px 24px;border-top:1px solid var(--border)}
.tbl-row span{font-size:14px;line-height:1.55;color:var(--body)}
.tbl-row .c1{font-size:14.5px;font-weight:600;color:var(--ink)}
.tbl-row .dim{color:var(--muted)}
.cols-4{grid-template-columns:1.1fr 1fr 1fr .9fr}
.cols-3{grid-template-columns:1.2fr 1fr 1fr}
.cols-3b{grid-template-columns:1fr 1.1fr 1.1fr}
.src{margin:10px 0 0;font-size:12.5px;color:var(--mono-grey)}
.src a{color:var(--mono-grey);text-decoration:underline}

/* ---------- data strip ---------- */
.data-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:8px 0 10px}
.data-card{background:#fff;border:1px solid var(--border);border-radius:12px;padding:20px 22px}
.data-card .num{font-family:"Space Grotesk",sans-serif;font-size:26px;font-weight:600;letter-spacing:-.02em;color:var(--ink)}
.data-card .num em{font-style:normal;color:var(--blue)}
.data-card .lbl{margin-top:6px;font-size:12.5px;line-height:1.5;color:var(--muted)}

/* ---------- spec cards / stacks / checklists ---------- */
.cards,.vstack{display:flex;flex-direction:column;gap:14px}
.spec{display:grid;grid-template-columns:180px 1fr;gap:24px;background:#fff;border:1px solid var(--border);border-radius:12px;padding:20px 24px;align-items:baseline}
.spec .k,.k{font-family:"IBM Plex Mono",monospace;font-size:13px;font-weight:600;color:var(--blue)}
.spec .v,.v{font-size:14.5px;line-height:1.6;color:var(--body)}
.list,.chk{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.list div,.chk-row{display:flex;gap:16px;align-items:baseline;padding:16px 0;border-bottom:1px solid var(--border)}
.chk-row{padding:14px 0}
.chk-row.p16{padding:16px 0}
.list .ar,.ar{font-family:"IBM Plex Mono",monospace;font-size:13px;color:var(--blue)}
.list span,.chk-row .t{font-size:15.5px;line-height:1.6;color:var(--body)}

figure{margin:26px 0 0;border-radius:14px;overflow:hidden;border:1px solid var(--border);background:#fff}
figure img{display:block;width:100%;height:auto}
figcaption{padding:12px 18px;font-size:12.5px;color:var(--mono-grey);border-top:1px solid var(--border)}

/* ---------- FAQ (collapsible) ---------- */
.faq{display:flex;flex-direction:column;gap:14px}
.faq details,details.faq-fold{background:#fff;border:1px solid var(--border);border-radius:12px}
.faq summary,details.faq-fold summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding:22px 28px;font-family:"Space Grotesk",sans-serif;font-size:17px;font-weight:600;color:var(--ink)}
.faq summary::-webkit-details-marker,details.faq-fold summary::-webkit-details-marker{display:none}
.faq summary::after,details.faq-fold summary::after{content:"+";font-family:"IBM Plex Mono",monospace;font-size:16px;color:var(--blue);flex:0 0 auto}
.faq details[open] summary::after,details.faq-fold[open] summary::after{content:"\2013"}
.faq .a,details.faq-fold .faq-a{padding:0 28px 22px;font-size:15px;line-height:1.65;color:var(--muted)}

/* ---------- related cards ---------- */
.related{margin-top:64px;border-top:1px solid var(--line);padding-top:40px}
.related .lbl,.related-label{margin:0 0 20px;font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--mono-grey)}
.related-grid,.grid3-16{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.rcard{display:flex;flex-direction:column;gap:8px;background:#fff;border:1px solid var(--border);border-radius:12px;padding:22px 24px;color:inherit;transition:border-color 200ms}
.rcard:hover{border-color:var(--blue)}
.rcard .tag,.tag{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--blue)}
.rcard .t{font-family:"Space Grotesk",sans-serif;font-size:17px;font-weight:600;color:var(--ink)}

/* ---------- blog index cards ---------- */
.wrap-cards{max-width:1360px;margin:0 auto;padding:72px 40px 96px}
.cards-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.bcard{display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);border-radius:14px;padding:32px 32px 28px;color:inherit;transition:transform 220ms cubic-bezier(.22,1,.36,1),box-shadow 220ms}
.bcard:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(11,15,26,.08)}
.card-thumb{display:block;margin:-32px -32px 22px;border-radius:13px 13px 0 0;overflow:hidden;aspect-ratio:16/9;background:#eef1f5}
.card-img{display:block;width:100%;height:100%;object-fit:cover}
.btag{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--blue)}
.btitle{margin-top:14px;font-family:"Space Grotesk",sans-serif;font-size:22px;font-weight:600;letter-spacing:-.01em;line-height:1.25;color:var(--ink)}
.bdek{margin-top:12px;font-size:14.5px;line-height:1.6;color:var(--muted)}
.bmeta{margin-top:14px;font-family:"IBM Plex Mono",monospace;font-size:11.5px;letter-spacing:.08em;color:var(--mono-grey)}
.bmore{margin-top:auto;padding-top:24px;font-size:14px;font-weight:600;color:var(--ink);display:inline-flex;align-items:center;gap:8px}
.mono-blue{font-family:"IBM Plex Mono",monospace;color:var(--blue)}

/* ---------- CTA + footer ---------- */
.cta .wrap,
.cta-wrap{max-width:1360px;margin:0 auto;padding:88px 40px;display:flex;align-items:center;justify-content:space-between;gap:60px}
.cta h2,.cta-wrap h2{margin:0;font-family:"Space Grotesk",sans-serif;font-size:42px;line-height:1.06;letter-spacing:-.03em;font-weight:600;color:#fff;max-width:660px;text-wrap:balance}
.cta p,.cta-wrap p{margin:18px 0 0;font-size:16px;line-height:1.6;color:var(--dk-blue);max-width:520px}
.btn-cta{flex:0 0 auto;display:inline-flex;align-items:center;gap:12px;background:var(--blue);color:#fff;font-size:16px;font-weight:600;padding:18px 36px;border-radius:999px;transition:transform 180ms}
.btn-cta:hover{transform:translateY(-2px)}
.site-footer{background:var(--dark);border-top:1px solid rgba(255,255,255,.1)}
.site-footer .wrap{padding-top:36px;padding-bottom:36px;display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}
.site-footer span{font-family:"IBM Plex Mono",monospace;font-size:12px;color:var(--dk-muted)}

/* ============================================================
   Mobile
   ============================================================ */
@media (max-width:1024px){
  .page .wrap,.page-grid{grid-template-columns:230px 1fr;gap:40px}
  .hero h1,.hero-grid h1{font-size:44px}
  .hero-grid h1.sz48{font-size:42px}
  .wrap-hero-list h1,h1.sz54{font-size:46px}
}
@media (max-width:860px){
  .wrap,.hero-grid,.page-grid,.cta-wrap,.wrap-hero-list,.wrap-cards{padding-left:22px;padding-right:22px}
  .site-header .wrap{height:auto;flex-wrap:wrap;padding-top:12px;padding-bottom:12px;row-gap:10px}
  .site-nav{gap:22px;order:3;width:100%}
  .btn-quote{padding:10px 18px;font-size:13px}
  .hero .wrap,.hero-grid{grid-template-columns:1fr;gap:36px;padding-top:48px;padding-bottom:56px}
  .hero h1,.hero-grid h1,.hero-grid h1.sz48{font-size:34px;line-height:1.12}
  .wrap-hero-list{padding-top:48px;padding-bottom:44px}
  .wrap-hero-list h1,h1.sz54{font-size:34px;line-height:1.12}
  .hero-answer{font-size:15.5px}
  .page .wrap,.page-grid{grid-template-columns:1fr;gap:40px;padding-top:48px;padding-bottom:64px}
  .toc{position:static;order:-1}
  article section{margin-top:44px}
  .mb56{margin-bottom:44px}
  .mt56{margin-top:44px}
  article h2,.mb56 h2,.mt56 h2{font-size:24px}
  article p,.mb56 p,.mt56 p{font-size:15.5px}
  .tbl-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
  .tbl-wrap .tbl-head,.tbl-wrap .tbl-row{min-width:560px}
  .data-strip{grid-template-columns:repeat(2,1fr)}
  .spec{grid-template-columns:1fr;gap:8px}
  .related-grid,.grid3-16,.cards-grid{grid-template-columns:1fr}
  .cta .wrap,.cta-wrap{flex-direction:column;align-items:flex-start;gap:28px;padding-top:56px;padding-bottom:56px}
  .cta h2,.cta-wrap h2{font-size:30px}
  .faq summary,details.faq-fold summary{padding:18px 20px}
  .faq .a,details.faq-fold .faq-a{padding:0 20px 18px}
}
@media (max-width:480px){
  .data-strip{grid-template-columns:1fr 1fr;gap:10px}
  .data-card{padding:16px}
  .data-card .num{font-size:21px}
}