/* Blog styling. The tokens are lifted from the main site's home.css so the
   subdomain reads as the same product rather than as somebody else's site;
   only the parts a reading page actually needs are carried over. */

:root{
  --bg:#070b12; --bg-2:#0a111c; --panel:#0e1726; --panel-2:#121d2e;
  --line:#1d2b40; --line-2:#27384f;
  --ink:#eef4fb; --ink-2:#b6c6d8; --ink-3:#7e91a8;
  --cyan:#3ddbf0; --cyan-deep:#16a8c4; --gold:#e8a93b; --green:#5fbf8a;
  --radius:16px; --radius-lg:24px; --maxw:1100px; --gutter:24px;
  --shadow:0 18px 50px rgba(0,0,0,.45);
  --ring:0 0 0 3px rgba(61,219,240,.45);
  --ff-display:'Barlow Condensed','IBM Plex Sans',system-ui,sans-serif;
  --ff-body:'IBM Plex Sans',system-ui,-apple-system,Segoe UI,sans-serif;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--bg); color:var(--ink);
  font-family:var(--ff-body); font-size:17px; line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto}
a{color:var(--cyan)}
a:focus-visible,button:focus-visible{outline:none;box-shadow:var(--ring);border-radius:6px}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter)}
.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;z-index:50;background:var(--panel);padding:10px 16px;border-radius:8px}

/* ---------- header ---------- */
.nav{position:sticky;top:0;z-index:30;background:rgba(7,11,18,.86);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;gap:18px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--ff-display);
  font-weight:700;font-size:23px;letter-spacing:.3px;color:var(--ink);text-decoration:none}
.brand svg{width:26px;height:26px}
.nav-links{margin-left:auto;display:flex;align-items:center;gap:22px}
.nav-links a{color:var(--ink-2);text-decoration:none;font-size:15px;font-weight:500}
.nav-links a:hover{color:var(--ink)}
.btn{display:inline-flex;align-items:center;gap:8px;border-radius:999px;
  padding:11px 20px;font-weight:600;font-size:15px;text-decoration:none;
  border:1px solid var(--line-2);color:var(--ink);background:rgba(255,255,255,.05)}
.btn:hover{background:rgba(255,255,255,.1)}
.nav-links a.btn-primary,.btn-primary{background:var(--cyan);border-color:var(--cyan);color:#04141a}
.nav-links a.btn-primary:hover,.btn-primary:hover{background:#63e5f5;color:#04141a}

/* ---------- blog index ---------- */
.masthead{padding-top:64px;padding-bottom:36px;border-bottom:1px solid var(--line)}
.masthead h1{font-family:var(--ff-display);font-size:clamp(38px,6vw,60px);
  line-height:1.05;margin:0 0 14px;font-weight:700;letter-spacing:.4px}
.masthead p{margin:0;color:var(--ink-2);max-width:62ch;font-size:19px}

.posts{list-style:none;margin:0;padding:40px 0 20px;display:grid;gap:18px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 28px;transition:border-color .15s,transform .15s}
.card:hover{border-color:var(--line-2);transform:translateY(-2px)}
.card h2{font-family:var(--ff-display);font-size:27px;margin:0 0 8px;font-weight:600;letter-spacing:.3px}
.card h2 a{color:var(--ink);text-decoration:none}
.card h2 a:hover{color:var(--cyan)}
.card p{margin:0 0 14px;color:var(--ink-2)}
.meta{display:flex;flex-wrap:wrap;gap:8px 14px;align-items:center;
  font-size:13px;color:var(--ink-3);letter-spacing:.3px}
.tag{background:rgba(61,219,240,.11);color:var(--cyan);border:1px solid rgba(61,219,240,.25);
  border-radius:999px;padding:3px 11px;font-weight:600;font-size:12px}

/* ---------- article ---------- */
.post{padding-top:52px;padding-bottom:20px;max-width:none}
.post-head{max-width:70ch}
.post-head h1{font-family:var(--ff-display);font-size:clamp(33px,5.2vw,50px);
  line-height:1.1;margin:14px 0 16px;font-weight:700;letter-spacing:.4px}
.standfirst{font-size:20px;color:var(--ink-2);margin:0 0 6px;line-height:1.6}
.crumb{font-size:14px;color:var(--ink-3)}
.crumb a{color:var(--ink-3)}

article.body{max-width:70ch;padding:14px 0 10px}
article.body h2{font-family:var(--ff-display);font-size:30px;font-weight:600;
  margin:44px 0 12px;letter-spacing:.3px;line-height:1.2}
article.body h3{font-size:20px;font-weight:600;margin:32px 0 8px}
article.body p{margin:0 0 18px;color:var(--ink-2)}
article.body strong{color:var(--ink);font-weight:600}
article.body ul,article.body ol{margin:0 0 20px;padding-left:22px;color:var(--ink-2)}
article.body li{margin:0 0 9px}
article.body li::marker{color:var(--ink-3)}
article.body hr{border:0;border-top:1px solid var(--line);margin:40px 0}

article.body blockquote{margin:0 0 20px;padding:14px 20px;border-left:3px solid var(--gold);
  background:var(--panel);border-radius:0 10px 10px 0;color:var(--ink-2)}
article.body blockquote p:last-child{margin:0}

.formula{background:var(--panel-2);border:1px solid var(--line);border-radius:12px;
  padding:16px 18px;margin:0 0 20px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:14.5px;color:var(--ink);overflow-x:auto;line-height:1.6}

.tbl{width:100%;border-collapse:collapse;margin:0 0 22px;font-size:15.5px;display:block;overflow-x:auto}
.tbl th,.tbl td{text-align:left;padding:11px 14px;border-bottom:1px solid var(--line);color:var(--ink-2)}
.tbl th{color:var(--ink);font-weight:600;font-size:13px;text-transform:uppercase;letter-spacing:.7px;
  border-bottom-color:var(--line-2);white-space:nowrap}
.tbl td strong{color:var(--ink)}

/* the point of the whole subdomain: send the reader to the tool */
.cta{background:linear-gradient(140deg,var(--panel),var(--panel-2));
  border:1px solid var(--line-2);border-radius:var(--radius-lg);
  padding:30px 32px;margin:44px 0 10px;box-shadow:var(--shadow)}
.cta h2{font-family:var(--ff-display);font-size:28px;margin:0 0 8px;font-weight:600;letter-spacing:.3px}
.cta p{margin:0 0 20px;color:var(--ink-2)}
.cta .btn{font-size:16px;padding:13px 24px}

.next{border-top:1px solid var(--line);margin-top:44px;padding-top:28px}
.next h2{font-family:var(--ff-display);font-size:23px;margin:0 0 16px;font-weight:600}
.next ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.next a{text-decoration:none;color:var(--ink);font-weight:500}
.next a:hover{color:var(--cyan)}
.next span{color:var(--ink-3);font-size:14px;display:block;font-weight:400}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);margin-top:60px;padding:34px 0 44px;background:var(--bg-2)}
.foot-top{display:flex;flex-wrap:wrap;gap:18px 26px;align-items:center;justify-content:space-between}
.foot-nav{display:flex;flex-wrap:wrap;gap:8px 20px}
.foot-nav a{color:var(--ink-2);text-decoration:none;font-size:15px}
.foot-nav a:hover{color:var(--ink)}
.attrib{margin:22px 0 0;color:var(--ink-3);font-size:13.5px;line-height:1.6;max-width:80ch}

@media(max-width:760px){
  :root{--gutter:16px}
  body{font-size:16px}
  .nav-links{gap:14px}
  .nav-links a:not(.btn){display:none}
  .masthead{padding-top:40px;padding-bottom:26px}
  .post{padding-top:32px;padding-bottom:10px}
  .card{padding:22px}
  .cta{padding:24px 22px}
}