:root{
    --ink:#16181D;
    --paper:#F7F5EF;
    --surface:#FFFFFF;
    --accent:#2C51D6;
    --accent-deep:#1B357F;
    --signal:#D9581F;
    --line:#DEDACC;
    --muted:#5B6270;
    --tag-bg:#EDEAE0;
    --shadow: 0 10px 26px -12px rgba(22,24,29,.22);
  }
  *{ box-sizing:border-box; }
  html,body{ margin:0; }
  body{
    background: var(--paper);
    color: var(--ink);
    font-family:'IBM Plex Sans', system-ui, -apple-system, sans-serif;
    -webkit-font-smoothing: antialiased;
  }
  h1,h2,h3,.display{ font-family:'Fraunces', Georgia, serif; margin:0; text-wrap:balance; }
  .mono{ font-family:'IBM Plex Mono', ui-monospace, monospace; }
  button, a{ font-family: inherit; }
  a{ color: var(--accent-deep); text-decoration:none; }
  :focus-visible{ outline: 3px solid var(--signal); outline-offset: 2px; }
  .wrap{ max-width: 900px; margin: 0 auto; padding: 0 20px 64px; }

  /* ---------- Masthead ---------- */
  .masthead{
    position: sticky; top: env(safe-area-inset-top, 0px); z-index: 30;
    background: rgba(247,245,239,.92); backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--line);
  }
  .masthead-inner{
    max-width: 900px; margin: 0 auto; padding: 16px 20px;
    display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap;
  }
  .logo{ font-size:1.4rem; font-weight:700; letter-spacing:-.01em; cursor:pointer; border:none; background:none; padding:0; color:var(--ink); }
  .logo span{ color: var(--accent); }
  .nav{ display:flex; gap:22px; flex-wrap:wrap; }
  .nav a{
    border:none; background:none; cursor:pointer; font-size:.78rem; letter-spacing:.06em; text-transform:uppercase;
    color: var(--muted); padding:6px 0; border-bottom: 2px solid transparent;
  }
  .nav a[aria-current="true"]{ color: var(--ink); border-bottom-color: var(--signal); }

  /* ---------- View plumbing ---------- */
  .view[hidden]{ display:none; }
  .eyebrow{ font-size:.74rem; letter-spacing:.08em; text-transform:uppercase; color: var(--signal); font-weight:600; }

  /* ---------- Home hero ---------- */
  .hero{
    padding: 44px 0 28px; border-bottom: 1px solid var(--line); margin-bottom: 32px;
    background-image: radial-gradient(circle, #DEDACC 1px, transparent 1px);
    background-size: 18px 18px; background-position: -9px -9px;
  }
  .hero-grid{ display:grid; grid-template-columns: 1fr; gap: 20px; align-items:center; }
  .hero h1{ font-size: clamp(2rem, 2.6vw + 1.2rem, 2.9rem); font-weight:600; line-height:1.08; margin: .35em 0 .5em; }
  .hero p{ font-size:1.05rem; color: var(--muted); max-width: 60ch; line-height:1.55; margin:0; }
  .hero-visual{ display:none; }
  .stat-strip{
    display:flex; flex-wrap:wrap; gap:0 18px; margin-top:20px;
    font-size:.7rem; letter-spacing:.07em; text-transform:uppercase; color: var(--muted);
  }
  .stat-strip span{ padding-right:18px; border-right:1px solid var(--line); }
  .stat-strip span:last-child{ border-right:none; padding-right:0; }
  @media (min-width: 720px){
    .hero-grid{ grid-template-columns: 1.35fr 1fr; gap: 28px; }
    .hero-visual{ display:block; }
  }

  /* ---------- Category icon chips ---------- */
  .cat-icon{
    display:inline-flex; align-items:center; justify-content:center; flex-shrink:0;
    border-radius:9px;
  }
  .cat-icon svg{ width:58%; height:58%; }
  .brand-mark{ display:inline-flex; vertical-align:-3px; margin-right:6px; color: var(--accent); }
  .brand-mark svg{ width:19px; height:19px; }
  .page-icon{
    display:inline-flex; align-items:center; justify-content:center; width:40px; height:40px;
    border-radius:10px; background: var(--tag-bg); color: var(--accent-deep); margin-bottom:14px;
  }
  .page-icon svg{ width:20px; height:20px; }

  /* ---------- Ad slots ---------- */
  .ad-slot{
    border:1px solid var(--line); background: var(--surface); border-radius:4px;
    padding:18px; text-align:center; margin: 28px 0; color: var(--muted);
  }
  .ad-slot .ad-label{
    font-size:.68rem; letter-spacing:.1em; text-transform:uppercase; color:#9C9584; display:block; margin-bottom:6px;
  }
  .ad-slot.banner{ min-height:84px; display:flex; flex-direction:column; align-items:center; justify-content:center; }
  .ad-slot.rectangle{ min-height:104px; display:flex; flex-direction:column; align-items:center; justify-content:center; max-width:320px; margin:28px auto; }
  .ad-slot p{ margin:0; font-size:.82rem; }
  .ad-slot.side-ad{
    display:none; position:fixed; top:50%; transform:translateY(-50%);
    width:160px; height:600px; margin:0; z-index:5;
  }
  .ad-slot.side-ad.left{ left: calc(50vw - 630px); }
  .ad-slot.side-ad.right{ right: calc(50vw - 630px); }
  @media (min-width: 1440px){
    .ad-slot.side-ad{ display:flex; flex-direction:column; align-items:center; justify-content:center; }
  }

  /* ---------- Article index ---------- */
  .index-heading{ display:flex; align-items:baseline; justify-content:space-between; margin-bottom: 14px; }
  .index-heading h2{ font-size:1.05rem; font-weight:600; }
  .index-list{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:14px; }
  .index-item{
    border:1px solid var(--line); border-radius:10px; background: var(--surface);
    transition: box-shadow .15s ease, transform .15s ease, border-color .15s ease;
  }
  .index-item:hover{ box-shadow: var(--shadow); transform: translateY(-2px); border-color: transparent; }
  .index-item a{
    display:flex; align-items:flex-start; gap:16px; width:100%; text-align:left;
    border:none; background:none; cursor:pointer; padding:20px; color: var(--ink);
  }
  .index-item .cat-icon{ width:42px; height:42px; margin-top:2px; }
  .index-card-body{ flex:1; min-width:0; display:block; }
  .index-tag{
    display:inline-block; font-size:.68rem; letter-spacing:.08em; background: var(--tag-bg); color: var(--accent-deep);
    padding:3px 8px; border-radius:3px; margin-bottom:10px;
  }
  .index-item h3{ font-size:1.3rem; font-weight:600; line-height:1.22; margin: 0 0 8px; }
  .index-item:hover h3{ color: var(--accent-deep); }
  .index-dek{ color: var(--muted); font-size:.94rem; line-height:1.5; margin:0 0 10px; max-width:62ch; }
  .index-meta{ font-size:.72rem; color:#9C9584; letter-spacing:.04em; }

  .home-footnote{ margin-top: 36px; padding-top: 20px; border-top:1px solid var(--line); color: var(--muted); font-size:.85rem; }

  /* ---------- Article page ---------- */
  .breadcrumb{ font-size:.72rem; letter-spacing:.06em; color: var(--muted); margin: 28px 0 18px; }
  .breadcrumb a{ color: var(--accent-deep); font-size:.72rem; letter-spacing:.06em; }
  .article-tag-row{ display:flex; align-items:center; gap:12px; margin-bottom:14px; }
  .article-tag-row .cat-icon{ width:38px; height:38px; }
  .article-tag{ display:inline-block; font-size:.7rem; letter-spacing:.08em; background: var(--tag-bg); color: var(--accent-deep); padding:4px 9px; border-radius:3px; }
  .article-title{ font-size: clamp(1.7rem, 2.2vw + 1rem, 2.4rem); font-weight:600; line-height:1.14; margin: 0 0 12px; }
  .article-dek{ font-size:1.08rem; color: var(--muted); line-height:1.5; margin: 0 0 16px; max-width:62ch; }
  .article-meta{ font-size:.74rem; color:#9C9584; letter-spacing:.04em; padding-bottom:24px; border-bottom:1px solid var(--line); margin-bottom: 28px; }
  .byline-row{ display:flex; align-items:center; gap:12px; padding-bottom:24px; border-bottom:1px solid var(--line); margin-bottom: 28px; }
  .byline-avatar{ width:38px; height:38px; border-radius:50%; background: var(--accent-deep); color:#fff; display:flex; align-items:center; justify-content:center; font-family:'IBM Plex Mono', monospace; font-size:.76rem; font-weight:600; flex-shrink:0; }
  .byline-text{ font-size:.78rem; color:#9C9584; letter-spacing:.02em; line-height:1.5; }
  .byline-text strong{ color: var(--ink); font-weight:600; }
  .quick-take{ display:flex; gap:14px; background: var(--surface); border:1px solid var(--line); border-radius:6px; padding:18px 20px; margin:0 0 24px; max-width:66ch; }
  .qt-icon{ flex-shrink:0; width:24px; height:24px; color: var(--accent); margin-top:2px; }
  .qt-icon svg{ width:100%; height:100%; }
  .quick-take-body{ flex:1; }
  .quick-take-label{ font-size:.68rem; letter-spacing:.08em; text-transform:uppercase; color: var(--accent-deep); font-weight:600; margin:0 0 6px; }
  .quick-take p{ margin:0; font-size:.96rem; line-height:1.55; color: var(--ink); }
  .glance-wrap{ margin:0 0 28px; max-width:66ch; }
  .glance-label{ font-size:.68rem; letter-spacing:.08em; text-transform:uppercase; color: var(--muted); font-weight:600; margin:0 0 8px; }
  .glance-table{ width:100%; border-collapse:collapse; border:1px solid var(--line); border-radius:6px; overflow:hidden; font-size:.9rem; }
  .glance-table tr{ border-bottom:1px solid var(--line); }
  .glance-table tr:last-child{ border-bottom:none; }
  .glance-table td{ padding:10px 14px; vertical-align:top; }
  .glance-table td:first-child{ width:38%; font-weight:600; color: var(--muted); background: var(--paper); }
  details.toc{ border:1px solid var(--line); border-radius:6px; margin:0 0 28px; max-width:66ch; background: var(--surface); }
  details.toc summary{ cursor:pointer; padding:13px 18px; font-size:.82rem; font-weight:600; letter-spacing:.03em; color: var(--ink); list-style:none; display:flex; align-items:center; justify-content:space-between; }
  details.toc summary::-webkit-details-marker{ display:none; }
  details.toc summary::after{ content:'+'; font-size:1.1rem; color: var(--muted); }
  details.toc[open] summary::after{ content:'\2212'; }
  details.toc ol{ margin:0; padding:2px 18px 16px 34px; }
  details.toc li{ margin-bottom:6px; font-size:.88rem; }
  details.toc a{ color: var(--accent-deep); text-decoration:none; }
  details.toc a:hover{ text-decoration:underline; }
  .engage-box{ margin-top:44px; padding:24px; border:1px solid var(--line); border-radius:6px; background: var(--tag-bg); max-width:66ch; }
  .engage-box p{ margin:0 0 12px; font-size:.94rem; color: var(--ink); }
  .engage-box a{ display:inline-block; border:1px solid var(--accent-deep); background: var(--accent-deep); color:#fff; padding:9px 18px; border-radius:4px; font-size:.85rem; font-weight:600; }
  .engage-box a:hover{ background: var(--accent); border-color: var(--accent); }
  .article-body{ max-width: 66ch; font-size:1.04rem; line-height:1.7; }
  .article-body h3{ font-size:1.28rem; font-weight:600; margin: 1.7em 0 .5em; line-height:1.25; }
  .article-body p{ margin: 0 0 1.1em; }
  .article-body ul, .article-body ol{ margin: 0 0 1.3em; padding-left: 1.3em; }
  .article-body li{ margin-bottom:.5em; }
  .article-body strong{ color: var(--ink); }
  .callout{
    border-left: 3px solid var(--signal); background: var(--surface); padding: 14px 18px; margin: 1.6em 0;
    font-size:.94rem; color: var(--muted); border-radius: 0 4px 4px 0;
  }
  .related{ margin-top: 44px; padding-top: 24px; border-top:1px solid var(--line); max-width: 66ch; }
  .related h4{ font-size:.72rem; letter-spacing:.08em; text-transform:uppercase; color: var(--muted); margin: 0 0 14px; font-weight:600; }
  .related-list{ display:flex; flex-direction:column; gap:10px; }
  .related-list a{ display:block; color: var(--accent-deep); font-size:.98rem; font-weight:600; }

  /* ---------- Static pages ---------- */
  .page-heading{ padding: 36px 0 18px; }
  .page-heading h1{ font-size: clamp(1.7rem,2vw + 1rem,2.3rem); font-weight:600; margin-bottom:.4em; }
  .page-body{ max-width: 66ch; font-size:1.02rem; line-height:1.7; color: var(--ink); }
  .page-body h3{ font-size:1.1rem; font-weight:600; margin: 1.5em 0 .5em; }
  .page-body p{ margin:0 0 1.1em; }
  .page-body ul{ padding-left:1.3em; margin:0 0 1.1em; }
  .contact-box{ border:1px solid var(--line); background:var(--surface); border-radius:4px; padding:22px; margin-top:8px; max-width:420px; }
  .contact-box p{ margin:0 0 8px; font-size:.98rem; }
  .contact-box .mono{ font-size:.92rem; color: var(--accent-deep); }

  /* ---------- Footer ---------- */
  .site-footer{ border-top:1px solid var(--line); margin-top:56px; padding: 26px 0 40px; }
  .footer-inner{ max-width:900px; margin:0 auto; padding:0 20px; display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap; align-items:center; }
  .footer-links{ display:flex; gap:18px; flex-wrap:wrap; }
  .footer-links a{ color: var(--muted); font-size:.82rem; }
  .footer-note{ font-size:.78rem; color:#9C9584; }

  @media (max-width: 480px){
    .masthead-inner{ padding: 14px 16px; }
    .wrap{ padding: 0 16px 48px; }
    .hero{ padding: 32px 0 22px; }
  }