/* ============================================================
   CLIENTSIDE — design tokens
   Concept: engineering blueprint / schematic — explaining how
   things work, not another SaaS card grid
   ============================================================ */
:root{
  --paper:#F4EFE4;
  --card:#FFFFFF;
  --line:#D8CFB8;
  --ink:#20241F;
  --ink-soft:#585144;
  --ink-faint:#948C76;

  --blueprint:#1E4C7A;
  --blueprint-bright:#2A649C;
  --annotate:#D9782E;

  --radius-s:4px;
  --radius-m:10px;

  --font-display:'Newsreader', serif;
  --font-body:'Inter', sans-serif;
  --font-mono:'IBM Plex Mono', monospace;
}

*{box-sizing:border-box;}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--font-body);font-size:17px;line-height:1.7;
  -webkit-font-smoothing:antialiased;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size:38px 38px;
  background-attachment:fixed;
}
a{color:var(--blueprint);text-decoration:underline;text-decoration-color:#1e4c7a55;text-underline-offset:2px;}
a:hover{color:var(--blueprint-bright);}
.container{max-width:760px;margin:0 auto;padding:0 24px;}
.container-wide{max-width:1040px;margin:0 auto;padding:0 24px;}
h1,h2,h3{font-family:var(--font-display);font-weight:600;line-height:1.2;margin:0 0 .5em;color:var(--ink);}
h1{font-size:clamp(30px,4.4vw,44px);}
h2{font-size:clamp(21px,2.6vw,27px);margin-top:1.6em;}
h3{font-size:19px;margin-top:1.4em;}
p{margin:0 0 1.15em;}
code{font-family:var(--font-mono);background:#1e4c7a12;padding:2px 6px;border-radius:4px;font-size:0.9em;color:var(--blueprint);}
:focus-visible{outline:2px solid var(--annotate);outline-offset:2px;}

/* ---------- header ---------- */
.site-header{padding:20px 0;border-bottom:2px solid var(--ink);background:var(--paper);}
.header-inner{display:flex;align-items:center;justify-content:space-between;}
.logo{display:flex;align-items:center;gap:9px;font-family:var(--font-display);font-weight:600;font-size:21px;text-decoration:none;color:var(--ink);}
.logo-mark{width:28px;height:28px;flex-shrink:0;}
.main-nav{display:flex;gap:22px;font-size:14px;font-weight:600;}
.main-nav a{color:var(--ink-soft);text-decoration:none;}
.main-nav a:hover{color:var(--annotate);}

/* ---------- hero ---------- */
.hero{padding:56px 0 20px;}
.hero .eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:12.5px;
  color:var(--blueprint);border:1px solid var(--blueprint);padding:5px 12px;border-radius:999px;margin-bottom:20px;}
.hero .lead{font-size:19px;color:var(--ink-soft);max-width:58ch;}

/* ---------- article index cards ---------- */
.article-list{margin:36px 0;}
.article-row{
  display:flex;justify-content:space-between;align-items:baseline;gap:20px;
  padding:22px 0;border-bottom:1px solid var(--line);text-decoration:none;color:var(--ink);
}
.article-row:hover .article-title{color:var(--annotate);}
.article-row .article-title{font-family:var(--font-display);font-size:20px;font-weight:600;text-decoration:none;transition:color .12s ease;}
.article-row .article-tag{font-family:var(--font-mono);font-size:11.5px;color:var(--blueprint);white-space:nowrap;padding-top:4px;}
.article-dek{color:var(--ink-soft);font-size:14.5px;margin-top:4px;max-width:56ch;}

/* ---------- article page ---------- */
.article-meta{font-family:var(--font-mono);font-size:12.5px;color:var(--ink-faint);margin-bottom:6px;}
.article-body{max-width:680px;}
.article-body h2{border-top:1px solid var(--line);padding-top:1.4em;}
.callout{
  background:var(--card);border:1.5px solid var(--blueprint);border-radius:var(--radius-m);
  padding:20px 22px;margin:24px 0;font-size:15px;
}
.callout .callout-label{font-family:var(--font-mono);font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:var(--blueprint);margin-bottom:8px;display:block;}
.related-tools{
  background:#1e4c7a0d;border:1px dashed var(--blueprint);border-radius:var(--radius-m);
  padding:18px 22px;margin:28px 0;font-size:14.5px;
}
.related-tools a{font-weight:700;}

.ad-slot{border:1px dashed var(--line);border-radius:var(--radius-m);padding:22px;text-align:center;
  color:var(--ink-faint);font-size:12px;margin:34px 0;background:var(--card);}

.site-footer{border-top:2px solid var(--ink);margin-top:60px;padding:30px 0;}
.footer-inner{display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;font-size:13px;color:var(--ink-faint);}
.footer-inner a{color:var(--ink-soft);margin-right:16px;text-decoration:none;}
.footer-inner a:hover{color:var(--annotate);}

.breadcrumb{padding:18px 0 0;font-size:13px;color:var(--ink-faint);font-family:var(--font-mono);}
.legal-page{max-width:680px;padding:36px 0 60px;}
@media (max-width:700px){.article-row{flex-direction:column;gap:4px;}}