:root{
  --bg:#f7f7f4; --surface:#fff; --ink:#111214; --muted:#6b6f76; --line:#e7e7e2;
  --blue:#8ec5ff; --green:#b6f0a8; --accent:#2b6df6;
  --radius:20px; --shadow:0 1px 2px rgba(17,18,20,.04),0 12px 40px rgba(17,18,20,.07);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){--bg:#0e0f11;--surface:#17181b;--ink:#f3f3f0;--muted:#9a9ea6;--line:#26282c;--shadow:0 12px 40px rgba(0,0,0,.4)}
}
*{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth}
body{font-family:'Heebo',system-ui,sans-serif;background:var(--bg);color:var(--ink);line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
.skip{position:absolute;right:12px;top:-60px;background:var(--ink);color:var(--bg);padding:10px 16px;border-radius:10px;z-index:100}
.skip:focus{top:10px}

header{position:sticky;top:0;z-index:50;backdrop-filter:saturate(1.6) blur(14px);background:color-mix(in srgb,var(--bg) 80%,transparent)}
.nav{display:flex;align-items:center;justify-content:space-between;height:84px;gap:16px}
.logo{display:flex;align-items:center}
.logo img{height:64px;width:auto;display:block}
.navr .btn.dark{background:transparent;color:var(--ink);border:1px solid var(--line);padding:8px 18px;font-size:14px;font-weight:500}
.navr .btn.dark:hover{background:var(--ink);color:var(--bg);border-color:var(--ink);transform:none}
.logo i{width:22px;height:22px;display:grid;grid-template-columns:repeat(3,1fr);gap:3px}
.logo i b{border-radius:50%;background:var(--accent)}
.logo i b:nth-child(2n){background:#7fd36f}.logo i b:nth-child(5){background:var(--ink)}
.links{display:flex;gap:24px;font-size:15px;color:var(--muted)}
.links a:hover{color:var(--ink)}
.btn{display:inline-flex;align-items:center;gap:10px;border-radius:999px;font-weight:500;font-size:15px;padding:11px 22px;transition:.2s}
.btn.dark{background:var(--ink);color:var(--bg)}
.btn.dark:hover{transform:translateY(-1px)}
.navr{display:flex;gap:12px;align-items:center}
.menu{display:none;border:1px solid var(--line);background:var(--surface);color:var(--ink);width:42px;height:42px;border-radius:50%;font-size:18px;cursor:pointer}
.mnav{display:none;flex-direction:column;border-top:1px solid var(--line);padding:8px 20px 16px;background:var(--bg)}
.mnav a{padding:12px 0;border-bottom:1px solid var(--line);font-weight:500}
.mnav.open{display:flex}

.sec-h{text-align:center;max-width:720px;margin:64px auto 48px}
.sec-h h1{font-size:clamp(34px,5vw,56px);font-weight:800;line-height:1.15;letter-spacing:-.015em}
.sec-h p{color:var(--muted);margin-top:14px;font-size:18px}

/* post cards */
.posts{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:80px}
.post{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s}
.post:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.post img{width:100%;aspect-ratio:16/9;object-fit:cover;display:block;background:linear-gradient(135deg,var(--blue),var(--green))}
.post .pb{padding:22px 24px 26px;display:flex;flex-direction:column;gap:8px;flex:1}
.post small{color:var(--muted);font-size:13px}
.post h3{font-size:19px;line-height:1.4;font-weight:700}
.post p{color:var(--muted);font-size:15px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post .more{margin-top:auto;padding-top:8px;font-weight:500;color:var(--accent)}

/* article */
.art{max-width:780px;padding-top:36px}
.crumbs{font-size:14px;color:var(--muted);margin-bottom:22px}
.crumbs a:hover{color:var(--ink)}
.art h1{font-size:clamp(30px,4.6vw,46px);font-weight:800;line-height:1.2;letter-spacing:-.01em}
.meta{display:flex;flex-wrap:wrap;gap:10px;color:var(--muted);font-size:15px;margin:16px 0 28px}
.cover{width:100%;border-radius:24px;border:1px solid var(--line);box-shadow:var(--shadow);margin-bottom:36px;display:block}
.prose{font-size:18px}
.prose p{margin:0 0 1.1em}
.prose h2{font-size:28px;font-weight:800;line-height:1.3;margin:1.8em 0 .6em}
.prose h3{font-size:22px;font-weight:700;line-height:1.35;margin:1.5em 0 .5em}
.prose h4{font-size:19px;font-weight:700;margin:1.3em 0 .4em}
.prose ul,.prose ol{margin:0 0 1.2em;padding-inline-start:1.4em}
.prose li{margin-bottom:.4em}
.prose li>p{margin:0}
.prose a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.prose blockquote{margin:1.4em 0;padding:14px 22px;border-inline-start:4px solid var(--blue);background:var(--surface);border-radius:12px;color:var(--muted)}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{display:block;margin:1.6em auto;border-radius:16px}
.prose table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:16px;display:block;overflow-x:auto}
.prose td,.prose th{border:1px solid var(--line);padding:10px 14px;vertical-align:top}
.prose td p{margin:0}
.prose tr:first-child td,.prose th{background:var(--surface);font-weight:700}
.cta-box{margin:56px 0 0;background:var(--surface);border:1px solid var(--line);border-radius:28px;padding:36px;text-align:center;box-shadow:var(--shadow)}
.cta-box h2{font-size:26px;font-weight:800;margin-bottom:8px}
.cta-box p{color:var(--muted);margin-bottom:20px}
.related{max-width:1160px;margin-top:70px}
.related h2{font-size:30px;font-weight:800;margin-bottom:22px}

footer{border-top:1px solid var(--line);padding:36px 0;color:var(--muted);font-size:14px}
footer .wrap{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
footer nav{display:flex;gap:18px;flex-wrap:wrap}
footer a:hover{color:var(--ink)}

@media(max-width:1060px){.links{gap:16px;font-size:14px}}
@media(max-width:1120px){.links{display:none}.menu{display:grid;place-items:center}}
@media(max-width:900px){.links{display:none}.menu{display:grid;place-items:center}.posts{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.logo img{height:50px}.nav{height:72px}.posts{grid-template-columns:1fr}.prose{font-size:17px}.cta-box{padding:26px 20px}.navr .btn.dark{padding:7px 14px;font-size:13px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}