:root {
  --paper:#F6F6F4; --bg:#FFFFFF; --surface:#F0EFEA;
  --ink:#0F0F12; --ink-2:#5C5C62; --ink-3:#A0A0A6;
  --line:rgba(15,15,18,0.08); --line-2:rgba(15,15,18,0.16);
  --accent:#2DD4BF; --accent-soft:#CFFAF1; --accent-d:#1DC4AF;
  --c-coral:#FF7A5C; --c-sun:#FCD34D; --c-pink:#F472B6; --c-sky:#7DD3FC;
  --font:'Onest',system-ui,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,monospace;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--paper);color:var(--ink);font-family:var(--font);
  font-size:17px;line-height:1.6;letter-spacing:-0.005em;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit}

/* ─── Header ─── */
.site-head{
  position:sticky;top:0;z-index:50;
  background:rgba(246,246,244,0.85);backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
}
.site-head .wrap{max-width:1200px;margin:0 auto;padding:14px 24px;display:flex;justify-content:space-between;align-items:center}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand .mark{width:36px;height:36px;border-radius:10px;background:var(--ink);color:var(--paper);display:grid;place-items:center;font-weight:800;font-size:16px;letter-spacing:-0.04em;position:relative;overflow:hidden}
.brand .mark::after{content:'';position:absolute;right:-4px;top:-4px;width:13px;height:13px;border-radius:999px;background:var(--accent)}
.brand .name{font-weight:800;font-size:20px;letter-spacing:-0.035em}
.nav-links{display:flex;gap:24px;font-size:14.5px;font-weight:500}
.nav-links a{color:var(--ink-2);text-decoration:none}
.nav-links a:hover,.nav-links a.on{color:var(--ink)}
.cta-mini{padding:8px 16px;background:var(--ink);color:var(--paper);border-radius:999px;text-decoration:none;font-weight:600;font-size:14px;letter-spacing:-0.015em}
@media(max-width:700px){.nav-links{display:none}}

/* ─── Article container ─── */
.article{max-width:760px;margin:0 auto;padding:32px 24px 80px}
@media(max-width:700px){.article{padding:24px 20px 64px}}

/* Breadcrumbs */
.breadcrumbs{font-family:var(--mono);font-size:11px;color:var(--ink-3);letter-spacing:0.04em;text-transform:uppercase;font-weight:600;margin-bottom:32px}
.breadcrumbs a{color:var(--ink-2);text-decoration:none;border-bottom:1px solid var(--line)}
.breadcrumbs .sep{margin:0 6px}
.breadcrumbs .cur{color:var(--ink)}

/* Article header */
.art-header .tags{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:18px}
.art-header .tag{font-family:var(--mono);font-size:10.5px;font-weight:700;letter-spacing:0.06em;text-transform:uppercase;padding:4px 9px;border-radius:5px}
.art-header .tag.cat{background:var(--accent-soft);color:var(--accent-d)}
.art-header .tag.t{background:var(--surface);color:var(--ink-2)}
.art-header h1{font-size:clamp(36px,5.2vw,56px);font-weight:800;letter-spacing:-0.045em;line-height:1.02;margin:0 0 18px}
.art-header h1 em{font-style:normal;color:var(--accent-d)}
.art-header .lead{font-size:19px;line-height:1.5;color:var(--ink-2);margin-bottom:28px;max-width:680px}
.art-header .meta{display:flex;align-items:center;gap:14px;padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);flex-wrap:wrap}
.art-header .author{display:flex;align-items:center;gap:10px}
.art-header .author .av{width:36px;height:36px;border-radius:10px;background:var(--c-pink);color:var(--ink);display:grid;place-items:center;font-weight:800;font-size:15px;letter-spacing:-0.03em}
.art-header .author .info .nm{font-weight:700;font-size:13.5px;letter-spacing:-0.02em}
.art-header .author .info .role{font-family:var(--mono);font-size:10.5px;color:var(--ink-3);font-weight:600;letter-spacing:0.04em;text-transform:uppercase}
.art-header .meta .d{width:4px;height:4px;border-radius:999px;background:var(--ink-3)}
.art-header .meta .item{font-family:var(--mono);font-size:11px;color:var(--ink-2);font-weight:600;letter-spacing:0.02em}
.art-header .meta .item b{color:var(--ink);font-weight:700}

/* Hero image */
.hero-img{margin:32px 0;aspect-ratio:16/9;border-radius:18px;background:linear-gradient(155deg,var(--accent) 0%,var(--c-sun) 50%,var(--c-coral) 100%);position:relative;overflow:hidden}
.hero-img .glyph{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);font-family:var(--font);font-weight:900;font-size:140px;letter-spacing:-0.05em;color:rgba(15,15,18,0.18);line-height:0.9}
.hero-img .caption{position:absolute;bottom:14px;left:14px;font-family:var(--mono);font-size:10.5px;font-weight:600;color:rgba(15,15,18,0.55);letter-spacing:0.04em;text-transform:uppercase}

/* ─── Article body ─── */
.art-body h2{font-size:32px;font-weight:800;letter-spacing:-0.04em;line-height:1.1;margin:48px 0 16px}
.art-body h2 .num{font-family:var(--mono);font-size:14px;color:var(--accent-d);font-weight:700;letter-spacing:0.02em;margin-right:10px;vertical-align:middle;display:inline-block}
.art-body h3{font-size:22px;font-weight:700;letter-spacing:-0.03em;margin:32px 0 12px}
.art-body p{margin:0 0 20px}
.art-body p b{font-weight:700;color:var(--ink)}
.art-body ul,.art-body ol{margin:0 0 24px;padding-left:0;list-style:none}
.art-body li{padding:8px 0 8px 28px;position:relative;font-size:17px;line-height:1.55}
.art-body ul li::before{content:'';position:absolute;left:0;top:18px;width:10px;height:10px;background:var(--accent);border-radius:3px}
.art-body ol{counter-reset:c}
.art-body ol li{counter-increment:c}
.art-body ol li::before{content:counter(c,decimal-leading-zero);position:absolute;left:0;top:8px;font-family:var(--mono);font-size:12px;font-weight:700;color:var(--accent-d);letter-spacing:0.02em}
.art-body code{font-family:var(--mono);font-size:14.5px;background:var(--surface);padding:2px 6px;border-radius:4px;letter-spacing:0}
.art-body pre{margin:24px 0;background:var(--ink);color:var(--paper);padding:20px 22px;border-radius:14px;font-family:var(--mono);font-size:13.5px;line-height:1.7;overflow-x:auto;letter-spacing:0;position:relative;white-space:pre-wrap;word-wrap:break-word}
.art-body pre code{background:transparent;padding:0;color:inherit;font-size:inherit;border-radius:0;display:block}
.art-body pre .tag-x{color:var(--c-sun)}
.art-body pre .blue{color:var(--c-sky)}
.art-body pre .pink{color:var(--c-pink)}
.art-body pre .green{color:var(--accent)}
.art-body pre .copy{position:absolute;top:12px;right:12px;width:30px;height:30px;border-radius:7px;background:rgba(255,255,255,0.12);color:var(--paper);display:grid;place-items:center;font-size:13px;cursor:pointer;border:none}
.art-body blockquote{margin:28px 0;padding:18px 22px;background:var(--surface);border-left:3px solid var(--accent);border-radius:0 12px 12px 0;font-size:18px;line-height:1.5;color:var(--ink)}
.art-body blockquote b{font-weight:700}

/* Callout box */
.callout{margin:28px 0;padding:18px 22px;background:var(--bg);border:1px solid var(--line);border-radius:14px;display:flex;gap:14px;align-items:flex-start}
.callout .ic{width:32px;height:32px;border-radius:9px;background:var(--accent);color:var(--ink);display:grid;place-items:center;font-weight:800;font-size:14px;flex-shrink:0}
.callout .body .ttl{font-weight:700;font-size:15px;letter-spacing:-0.025em;margin-bottom:4px}
.callout .body .text{font-size:14.5px;color:var(--ink-2);line-height:1.5;margin:0}

/* TL;DR */
.tldr{margin:28px 0;padding:20px 22px;background:var(--accent-soft);border-radius:14px}
.tldr .lbl{font-family:var(--mono);font-size:10.5px;font-weight:700;color:var(--accent-d);letter-spacing:0.08em;text-transform:uppercase}
.tldr h4{margin:6px 0 10px;font-size:17px;font-weight:700;letter-spacing:-0.025em}
.tldr p{margin:0;font-size:14.5px;line-height:1.5;color:var(--ink)}

/* Author bio at end */
.author-bio{margin:56px 0 0;padding:24px;background:var(--bg);border:1px solid var(--line);border-radius:16px;display:flex;gap:16px;align-items:flex-start}
.author-bio .av{width:56px;height:56px;border-radius:14px;background:var(--c-pink);color:var(--ink);display:grid;place-items:center;font-weight:800;font-size:24px;letter-spacing:-0.03em;flex-shrink:0}
.author-bio .body .role{font-family:var(--mono);font-size:11px;color:var(--accent-d);font-weight:700;letter-spacing:0.04em;text-transform:uppercase}
.author-bio .body .nm{font-weight:800;font-size:18px;letter-spacing:-0.03em;margin-top:3px}
.author-bio .body .desc{font-size:14px;line-height:1.5;color:var(--ink-2);margin-top:6px}
.author-bio .body .links{margin-top:10px;display:flex;gap:8px}
.author-bio .body .links a{font-family:var(--mono);font-size:11px;font-weight:700;letter-spacing:0.04em;text-transform:uppercase;padding:5px 10px;background:var(--surface);border-radius:5px;color:var(--ink);text-decoration:none}

/* CTA inline */
.cta-card{margin:48px 0;padding:28px;background:var(--ink);color:var(--paper);border-radius:18px;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.cta-card .l h4{margin:0;font-size:22px;font-weight:800;letter-spacing:-0.035em;line-height:1.1}
.cta-card .l h4 em{font-style:normal;color:var(--accent)}
.cta-card .l .desc{font-size:14px;color:rgba(255,255,255,0.6);margin-top:4px}
.cta-card .btn{padding:14px 22px;background:var(--accent);color:var(--ink);border-radius:14px;font-weight:700;font-size:15px;letter-spacing:-0.025em;text-decoration:none;display:flex;align-items:center;gap:10px;flex-shrink:0}
.cta-card .btn .arr{width:24px;height:24px;border-radius:7px;background:var(--ink);color:var(--accent);display:grid;place-items:center;font-size:13px;font-weight:800}

/* Related articles */
.related{margin:56px 0 0}
.related .ttl{font-family:var(--mono);font-size:11px;font-weight:700;letter-spacing:0.06em;color:var(--ink-3);text-transform:uppercase;margin-bottom:14px}
.related .grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
@media(max-width:600px){.related .grid{grid-template-columns:1fr}}
.related .card{padding:16px;background:var(--bg);border:1px solid var(--line);border-radius:14px;text-decoration:none;color:var(--ink);transition:transform 0.15s,box-shadow 0.15s}
.related .card:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(15,15,18,0.06)}
.related .card .tag{font-family:var(--mono);font-size:9.5px;font-weight:700;color:var(--accent-d);letter-spacing:0.06em;text-transform:uppercase}
.related .card h5{margin:6px 0 4px;font-weight:700;font-size:15px;letter-spacing:-0.025em;line-height:1.2}
.related .card .meta{font-family:var(--mono);font-size:10px;color:var(--ink-3);font-weight:600;letter-spacing:0.04em}

/* ─── Footer ─── */
.site-foot{border-top:1px solid var(--line);padding:48px 24px 36px;background:var(--bg)}
.site-foot .wrap{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;flex-wrap:wrap;gap:24px;font-family:var(--mono);font-size:12px;color:var(--ink-3);letter-spacing:0.02em}
.site-foot .wrap a{color:var(--ink-2);text-decoration:none}
.site-foot .wrap a:hover{color:var(--ink)}
.site-foot .links{display:flex;gap:18px}