/* MindSage engineering blog. Same tokens, fonts, nav and footer as the main site (index.html). */
@font-face{font-family:'Onest';font-style:normal;font-weight:400 700;font-display:swap;src:url(/fonts/onest-latin.woff2) format('woff2')}
@font-face{font-family:'Rock Salt';font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/rocksalt-latin.woff2) format('woff2')}
:root{
  --paper:#FFFFFF; --soft:#F3F5F4; --ink:#1C2030; --ink-2:#4A5262; --ink-3:#646C79; --line:#E4E9E6;
  --pen:#3E5A86; --accent:#2F6B5C; --fill:#2F6B5C; --fill-h:#22574A; --fill-ink:#FFFFFF; --hl:#DDEFE4;
  --win:#FFFFFF; --warn:#A4532B;
  --surface:var(--win); --muted:var(--ink-3); --rule:var(--line); --bg:var(--paper);
  --f-read:'Onest', system-ui, sans-serif;
  --f-ui:'Segoe UI Variable Text','Segoe UI Variable','Segoe UI',-apple-system,BlinkMacSystemFont,system-ui,sans-serif;
  --f-hand:'Rock Salt','Segoe Print','Bradley Hand',cursive;
  --f-mono:'Cascadia Code',Consolas,ui-monospace,'SF Mono',monospace;
  --e:cubic-bezier(.2,.7,.2,1);
}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]){
  --paper:#0F1118; --soft:#171A23; --ink:#E8ECEA; --ink-2:#AAB2BC; --ink-3:#98A0AC; --line:#262B37;
  --pen:#93B4E0; --accent:#8FD6A6; --hl:#1D352B; --win:#171A23; --warn:#E3986F; color-scheme:dark } }
:root[data-theme="dark"]{
  --paper:#0F1118; --soft:#171A23; --ink:#E8ECEA; --ink-2:#AAB2BC; --ink-3:#98A0AC; --line:#262B37;
  --pen:#93B4E0; --accent:#8FD6A6; --hl:#1D352B; --win:#171A23; --warn:#E3986F; color-scheme:dark }

*{box-sizing:border-box}
html{overflow-x:clip}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--f-ui);font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:60;background:var(--paper)}
a{color:inherit}
img{display:block;max-width:100%}
:focus-visible{outline:2px solid var(--pen);outline-offset:3px;border-radius:4px}
.wrap{max-width:1180px;margin:0 auto;padding-left:max(24px,env(safe-area-inset-left,0px));padding-right:max(24px,env(safe-area-inset-right,0px))}
.hand{font-family:var(--f-hand);color:var(--pen);font-weight:400;letter-spacing:0;line-height:1.5}
.ink path{fill:none;stroke:var(--pen);stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.draw path{stroke-dasharray:var(--len,400);stroke-dashoffset:var(--len,400);animation:draw var(--dur,.9s) var(--e) forwards;animation-delay:var(--dl,.4s)}
@keyframes draw{to{stroke-dashoffset:0}}
@media (prefers-reduced-motion: reduce){.draw path{animation:none;stroke-dashoffset:0}}

/* nav: same as the main site */
.nav{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:var(--paper);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:36px;height:72px}
.brand{display:flex;align-items:center;gap:10px;font:600 19px/1 var(--f-read);text-decoration:none;letter-spacing:-.01em}
.brand img{width:28px;height:28px}
.brand small{font:500 15px/1 var(--f-ui);color:var(--ink-3);letter-spacing:0}
.nav-links{display:flex;gap:32px;margin-left:auto;font-size:15px;color:var(--ink-2)}
.nav-links a{text-decoration:none}
.nav-links a:hover,.nav-links a[aria-current]{color:var(--ink)}
.nav .join-link{font-weight:600;color:var(--accent);text-decoration:none;font-size:15px}
@media (max-width:760px){.nav-links{display:none}.nav .join-link{margin-left:auto}}

/* reading column */
main.read{max-width:720px;margin:0 auto;padding:56px max(24px,env(safe-area-inset-right,0px)) 96px max(24px,env(safe-area-inset-left,0px))}
.kicker{font-size:14px;font-weight:600;color:var(--accent);margin:0 0 14px}
h1,h2,h3{font-family:var(--f-read);text-wrap:balance;font-weight:600;letter-spacing:-.025em}
h1{font-size:clamp(32px,5vw,48px);line-height:1.1;margin:0 0 18px;letter-spacing:-.035em}
.dek{font-size:20px;line-height:1.5;color:var(--ink-2);margin:0 0 22px}
.byline{font-size:14px;color:var(--ink-3);padding-bottom:28px;border-bottom:1px solid var(--line);margin:0 0 36px}
h2{font-size:26px;line-height:1.25;margin:56px 0 14px}
h3{font-size:19px;letter-spacing:-.015em;margin:34px 0 8px}
p{margin:0 0 18px;color:var(--ink-2)}
article strong{color:var(--ink);font-weight:600}
li{color:var(--ink-2);margin-bottom:8px}
ul,ol{padding-left:22px;margin:0 0 20px}
article a{color:var(--accent);text-underline-offset:3px}
code{font-family:var(--f-mono);font-size:.85em;background:var(--soft);padding:1px 6px;border-radius:5px;color:var(--ink)}
pre{font-family:var(--f-mono);font-size:13.5px;line-height:1.6;background:var(--soft);border-radius:10px;padding:18px 20px;overflow-x:auto;margin:0 0 24px;color:var(--ink)}
pre code{background:none;padding:0;font-size:inherit}
.cm{color:var(--ink-3)}
blockquote{margin:0 0 22px;padding:2px 0 2px 18px;border-left:3px solid var(--line);color:var(--ink-2);font-style:italic}
.num{font-variant-numeric:tabular-nums}
aside.callout{background:var(--soft);border-radius:12px;padding:18px 20px;margin:0 0 26px}
aside.callout p{margin:0}

.table-wrap{overflow-x:auto;margin:4px 0 26px}
table{border-collapse:collapse;width:100%;font-size:15px;font-variant-numeric:tabular-nums}
th,td{text-align:left;padding:10px 14px 10px 0;border-bottom:1px solid var(--line);vertical-align:top;color:var(--ink-2)}
th{font-size:13px;color:var(--ink-3);font-weight:600}
td.r,th.r{text-align:right}
td.good{color:var(--accent);font-weight:600}
td.bad{color:var(--warn);font-weight:600}
caption{caption-side:bottom;text-align:left;font-size:13px;color:var(--ink-3);padding-top:10px}

figure{margin:8px 0 32px}
figcaption{font-size:13.5px;color:var(--ink-3);margin-top:10px;line-height:1.5}
.chart{background:var(--win);border:1px solid var(--line);border-radius:12px;padding:18px 18px 12px;overflow-x:auto}
.chart-inner{min-width:520px}
.legend{display:flex;gap:18px;flex-wrap:wrap;font-size:12.5px;color:var(--ink-3);margin-bottom:10px}
.legend i{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:6px;vertical-align:-1px}
.row{display:grid;grid-template-columns:150px 1fr;gap:12px;align-items:center;height:38px}
.row .lbl,.pair-row .lbl{font-family:var(--f-mono);font-size:12.5px;color:var(--ink)}
.track{position:relative;height:100%}
.track::before{content:"";position:absolute;left:0;right:0;top:50%;border-top:1px dashed var(--line)}
.seg{position:absolute;top:calc(50% - 1.5px);height:3px;background:var(--accent);opacity:.45}
.seg.bad{background:var(--warn)}
.dot{position:absolute;top:50%;width:11px;height:11px;border-radius:50%;transform:translate(-50%,-50%)}
.dot.before{background:var(--win);border:2px solid var(--ink-3)}
.dot.after{background:var(--accent)}
.dot.after.bad{background:var(--warn)}
.val{position:absolute;top:calc(50% - 21px);font-size:11px;color:var(--ink-3);transform:translateX(-50%);white-space:nowrap;font-variant-numeric:tabular-nums}
.val.after{color:var(--accent);font-weight:600;top:calc(50% + 6px)}
.val.after.bad{color:var(--warn)}
.axis{display:grid;grid-template-columns:150px 1fr;gap:12px;margin-top:6px}
.ticks{position:relative;height:22px;border-top:1px solid var(--line)}
.ticks span{position:absolute;top:4px;transform:translateX(-50%);font-size:11px;color:var(--ink-3);font-variant-numeric:tabular-nums}
.steps{display:grid;gap:10px}
.step{display:grid;grid-template-columns:minmax(0,1fr) 76px;gap:12px;align-items:center;font-size:14px;color:var(--ink-2)}
.step .what{min-width:0}
.step .bar{height:10px;background:var(--accent);border-radius:0 3px 3px 0;opacity:.85;margin-top:4px}
.step .mb{text-align:right;font-variant-numeric:tabular-nums;font-weight:600;color:var(--ink)}
.stack{display:flex;height:44px;border-radius:8px;overflow:hidden}
.stack-seg{display:flex;align-items:center;padding:0 10px;color:var(--paper);font-size:13px;font-weight:600;white-space:nowrap;overflow:hidden;min-width:0}
.stack-seg.s1{background:var(--ink-3)}
.stack-seg.s2{background:var(--warn);padding:0;min-width:4px}
.stack-seg.s4{background:var(--accent)}
.stack-note{font-size:13px;color:var(--ink-3);margin:10px 0 0}
.pair{display:grid;gap:14px;margin-right:44px}
.pair-row{display:grid;grid-template-columns:100px minmax(0,1fr);gap:12px;align-items:center}
.bars{display:grid;gap:4px}
.b{height:16px;border-radius:0 3px 3px 0;position:relative}
.b.old{background:var(--ink-3);opacity:.6}
.b.new{background:var(--accent)}
.b em{position:absolute;left:calc(100% + 6px);top:-1px;font-style:normal;font-size:12px;color:var(--ink);font-variant-numeric:tabular-nums}
.scale{display:flex;justify-content:space-between;margin:8px 44px 0 112px;font-size:11px;color:var(--ink-3);border-top:1px solid var(--line);padding-top:4px}

/* hand-written margin note, as on the main site */
.margin-note{transform:rotate(-3deg);margin:-6px 0 26px auto;max-width:320px;text-align:right}
.margin-note p{color:var(--pen);font-size:17px;margin:0}

/* blog index */
.blog-head{position:relative}
.blog-head h1{font-size:clamp(36px,5.6vw,60px);max-width:16ch}
.blog-head .mark{position:relative;white-space:nowrap}
.blog-head .mark svg{position:absolute;left:-2%;bottom:-.1em;width:104%;height:.3em;overflow:visible}
.blog-intro{font-size:19px;color:var(--ink-2);max-width:36em;margin:0 0 12px}
.posts{list-style:none;padding:0;margin:28px 0 0;border-top:1px solid var(--line)}
.posts li{margin:0;border-bottom:1px solid var(--line)}
.posts a{display:grid;grid-template-columns:44px minmax(0,1fr);gap:4px 14px;padding:24px 0;text-decoration:none;color:var(--ink)}
.posts a:hover h2{color:var(--accent)}
.posts .n{font:600 15px/1.6 var(--f-read);color:var(--ink-3);font-variant-numeric:tabular-nums;padding-top:3px}
.posts h2{font-size:22px;margin:0 0 6px;transition:color .2s var(--e)}
.posts p{margin:0;font-size:16px;line-height:1.55}
.posts .meta{font-size:13px;color:var(--ink-3);margin-top:8px}

/* prev / next */
.post-nav{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:56px;padding-top:22px;border-top:1px solid var(--line);font-size:15px}
.post-nav a{text-decoration:none;max-width:46%;color:var(--ink)}
.post-nav a.next{text-align:right;margin-left:auto}
.post-nav a span{display:block;font-size:13px;color:var(--ink-3)}
.post-nav a:hover{color:var(--accent)}
.cta{margin-top:48px;background:var(--soft);border-radius:14px;padding:24px;display:flex;flex-wrap:wrap;gap:16px 24px;align-items:center;justify-content:space-between}
.cta p{margin:0;color:var(--ink);font-weight:500;max-width:30em}
.btn{display:inline-flex;align-items:center;height:50px;padding:0 24px;border-radius:10px;background:var(--fill);color:var(--fill-ink);font:600 16px/1 var(--f-ui);text-decoration:none;border:0;cursor:pointer;transition:background .2s var(--e)}
.btn:hover{background:var(--fill-h)}

footer{border-top:1px solid var(--line);font-size:14px;color:var(--ink-3)}
footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px 40px;padding-block:40px}
footer p{max-width:46em;margin:0;color:var(--ink-3)}
footer .social{display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px}
footer .social a{display:inline-flex;align-items:center;gap:6px;color:var(--ink-2);text-decoration:none;font-weight:500}
footer .social a:hover{color:var(--ink)}
footer .social svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round}

/* phones: fit the dumbbell chart instead of scrolling it */
@media (max-width:600px){
  .chart-inner{min-width:0}
  .row,.axis{grid-template-columns:84px 1fr;gap:8px}
  .row{height:44px}
  .row .lbl{font-size:10.5px;line-height:1.25}
  .val{font-size:10px}
}

/* images */
img.cover{width:100%;height:auto;border:1px solid var(--line);border-radius:14px;margin:0 0 36px}
.posts a{grid-template-columns:200px minmax(0,1fr);align-items:start}
.posts .thumb{width:200px;height:auto;border:1px solid var(--line);border-radius:10px}
.posts .n{display:block;font-size:13px;padding:0;margin-bottom:2px}
@media (max-width:600px){.posts a{grid-template-columns:1fr;gap:12px}.posts .thumb{width:100%}}