:root{
  --void:#0b0d10; --graphite:#12151a; --panel:#171b21; --panel-2:#1e232b;
  --line:#282e37; --line-soft:#1f242c; --dust:#7d8896; --chalk:#e8ecf1;
  --heat:#ff5b1f; --ember:#ffb43d; --heat-glow:rgba(255,91,31,.30); --ok:#3ddc97;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{background:var(--void);color:var(--chalk);font-family:'Inter',sans-serif;-webkit-font-smoothing:antialiased;line-height:1.65;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.wrap{max-width:800px;margin:0 auto;padding:0 26px;}
h1,h2,h3{font-family:'Inter',sans-serif;font-weight:800;line-height:1.15;letter-spacing:-.01em;}
:focus-visible{outline:2px solid var(--heat);outline-offset:3px;border-radius:4px;}

/* header */
header{position:sticky;top:0;z-index:80;background:rgba(11,13,16,.88);backdrop-filter:blur(14px) saturate(140%);border-bottom:1px solid var(--line-soft);}
.nav{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 26px;max-width:900px;margin:0 auto;}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.2rem;text-transform:uppercase;letter-spacing:.02em;}
.logo-mark{width:24px;height:24px;border-radius:50%;border:2.5px solid var(--heat);position:relative;flex-shrink:0;box-shadow:0 0 14px var(--heat-glow);}
.logo-mark::after{content:'';position:absolute;inset:5px;border-radius:50%;border:1.5px solid rgba(255,91,31,.45);}
.logo em{font-style:normal;color:var(--heat);}
.nav-links{display:flex;align-items:center;gap:22px;font-size:.88rem;color:var(--dust);font-weight:500;}
.nav-links a:hover{color:var(--chalk);}
.nav-call{font-family:'IBM Plex Mono',monospace;font-size:.8rem;font-weight:700;padding:9px 16px;border-radius:999px;background:var(--heat);color:#0b0d10;white-space:nowrap;}
.lang-switch{display:flex;gap:2px;background:var(--panel-2);border:1px solid var(--line);border-radius:999px;padding:3px;flex-shrink:0;}
.lang-btn{font-family:'IBM Plex Mono',monospace;font-size:.7rem;font-weight:700;letter-spacing:.04em;padding:5px 9px;border-radius:999px;color:var(--dust);}
.lang-btn:hover{color:var(--chalk);}
.lang-btn.active{background:var(--heat);color:#0b0d10;}
@media (max-width:560px){.nav-links a:not(.nav-call){display:none;}}

/* breadcrumb */
.crumb{font-family:'IBM Plex Mono',monospace;font-size:.74rem;letter-spacing:.05em;color:var(--dust);padding:22px 0 0;}
.crumb a{color:var(--dust);} .crumb a:hover{color:var(--heat);}

/* article */
.art-hero{
  position:relative;overflow:hidden;
  margin:22px 0 6px;padding:46px 30px 32px;border-radius:20px;
  background:
    radial-gradient(circle at 14% 18%,rgba(255,91,31,.38),transparent 55%),
    radial-gradient(circle at 88% 82%,rgba(255,180,61,.20),transparent 50%),
    linear-gradient(160deg,#181d24 0%,#0d0f13 100%);
  border:1px solid var(--line);
  box-shadow:0 30px 60px -30px rgba(0,0,0,.6);
}
.art-hero::before{
  content:'';position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:22px 22px;
  mask-image:linear-gradient(160deg,rgba(0,0,0,.9),transparent 75%);
}
.art-icon-badge{position:relative;width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:rgba(255,91,31,.12);border:1px solid rgba(255,91,31,.35);margin-bottom:18px;}
.art-icon{position:relative;width:26px;height:26px;color:var(--heat);margin:0;}
.tag{position:relative;font-family:'IBM Plex Mono',monospace;font-size:.76rem;letter-spacing:.18em;text-transform:uppercase;color:var(--heat);display:inline-flex;align-items:center;gap:9px;}
.tag::before{content:'';width:20px;height:1px;background:var(--heat);}
.art-hero h1{position:relative;font-size:clamp(1.9rem,4.4vw,2.7rem);margin:16px 0 10px;text-shadow:0 2px 24px rgba(0,0,0,.4);}
.art-meta{position:relative;font-family:'IBM Plex Mono',monospace;font-size:.78rem;color:var(--dust);}
.art-body{padding:34px 0 20px;font-size:1.04rem;color:#d6dbe2;}
.art-body p{margin:0 0 20px;}
.art-body h2{font-size:1.5rem;margin:38px 0 14px;color:var(--chalk);}
.art-body h3{font-size:1.2rem;margin:28px 0 12px;color:var(--chalk);}
.art-body ul,.art-body ol{margin:0 0 20px;padding-left:22px;}
.art-body li{margin:0 0 9px;}
.art-body strong{color:var(--chalk);}
.art-body a.inline-link{color:var(--heat);text-decoration:underline;text-underline-offset:3px;}

/* callout CTA */
.callout{background:var(--panel);border:1px solid var(--line);border-left:3px solid var(--heat);border-radius:12px;padding:22px 24px;margin:30px 0;}
.callout p{margin:0 0 14px;color:var(--chalk);}
.callout .cta{display:inline-flex;align-items:center;gap:9px;font-weight:700;font-size:.92rem;padding:12px 22px;border-radius:999px;background:var(--heat);color:#0b0d10;transition:transform .16s;}
.callout .cta:hover{transform:translateY(-1px);}

/* related / index cards */
.post-grid{display:grid;gap:18px;padding:30px 0 60px;}
.post-card{display:block;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:22px 24px;transition:border-color .18s,transform .18s;}
.post-card:hover{border-color:var(--heat);transform:translateY(-2px);}
.post-card .pc-tag{font-family:'IBM Plex Mono',monospace;font-size:.72rem;color:var(--heat);letter-spacing:.1em;text-transform:uppercase;}
.post-card h2{font-size:1.25rem;margin:9px 0 8px;}
.post-card p{color:var(--dust);font-size:.92rem;margin:0;}
.post-card .pc-date{display:block;font-family:'IBM Plex Mono',monospace;font-size:.72rem;color:#5c6673;margin-top:12px;}

.hub-hero{padding:50px 0 10px;text-align:center;}
.hub-hero h1{font-size:clamp(2rem,5vw,2.8rem);margin:16px 0 12px;}
.hub-hero p{color:var(--dust);max-width:560px;margin:0 auto;}

footer{border-top:1px solid var(--line-soft);padding:34px 0 44px;margin-top:20px;}
.ft-row{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:.86rem;color:var(--dust);}
.ft-row a:hover{color:var(--heat);}