:root{
  --bg:#ffffff; --fg:#1c2321; --muted:#5b6b66; --line:#e5e9e7;
  --brand:#0b6b5f; --brand-dark:#084f46; --accent:#d98324; --soft:#f4f7f6;
  --maxw:1080px; --radius:10px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, "Noto Sans", sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);color:var(--fg);background:var(--bg);line-height:1.65;font-size:18px}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto;border-radius:6px}
h1,h2,h3,h4{line-height:1.25;color:var(--fg);font-weight:700}
.skip{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:10px 16px;z-index:100}
.skip:focus{left:8px;top:8px}
.dot{color:var(--accent)}

/* Header */
.site-header{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:50}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:14px;padding-bottom:14px}
.brand{display:flex;flex-direction:column;line-height:1.1;text-decoration:none}
.brand-name{font-size:24px;font-weight:800;color:var(--brand);letter-spacing:-.3px}
.brand-tag{font-size:12.5px;color:var(--muted);margin-top:2px}
.site-nav ul{display:flex;gap:22px;list-style:none;margin:0;padding:0;flex-wrap:wrap}
.site-nav a{color:var(--fg);font-size:15.5px;font-weight:600;padding:6px 0;border-bottom:2px solid transparent}
.site-nav a:hover{color:var(--brand);text-decoration:none}
.site-nav a[aria-current=page]{color:var(--brand);border-bottom-color:var(--brand)}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--fg)}

/* Layout */
.main{padding:34px 20px 10px;display:grid;grid-template-columns:1fr;gap:34px}
.content{min-width:0}
main:has(.sidebar){grid-template-columns:minmax(0,1fr) 240px}
.page-title{font-size:33px;margin:0 0 8px;letter-spacing:-.5px}
.meta-cats{font-size:14px;color:var(--muted);margin:0 0 22px}
.meta-cats a{color:var(--muted);text-decoration:underline}

/* Prose */
.prose{font-size:18px}
.prose h2{font-size:25px;margin:34px 0 12px}
.prose h3{font-size:20px;margin:26px 0 10px}
.prose p{margin:0 0 18px}
.prose ul,.prose ol{margin:0 0 18px;padding-left:24px}
.prose li{margin:6px 0}
.prose img{margin:18px 0;display:block}
.prose a{text-decoration:underline}
.prose blockquote{margin:22px 0;padding:6px 18px;border-left:4px solid var(--brand);background:var(--soft);color:#2c3a36;border-radius:0 6px 6px 0}
.prose table{border-collapse:collapse;width:100%;margin:20px 0;font-size:16px}
.prose th,.prose td{border:1px solid var(--line);padding:8px 10px;text-align:left}
.prose code{background:var(--soft);padding:2px 6px;border-radius:4px;font-size:.9em}
.prose pre{background:#0f1a18;color:#e7f0ee;padding:16px;border-radius:8px;overflow:auto}
.prose pre code{background:none;padding:0;color:inherit}
.prose iframe{max-width:100%;margin:18px 0}
.back-link{margin-top:34px;font-weight:600}

/* Sidebar */
.sidebar{align-self:start;position:sticky;top:92px}
.aside-title{font-size:14px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:0 0 10px}
.cat-list{list-style:none;margin:0;padding:0}
.cat-list li{margin:0 0 8px}
.cat-list a{font-size:15px}

/* Hero + home */
.hero{padding:22px 0 8px}
.hero h1{font-size:40px;letter-spacing:-1px;margin:0 0 14px}
.lead{font-size:20px;color:#33413d;max-width:52ch;margin:0 0 22px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-block;background:var(--brand);color:#fff;padding:12px 20px;border-radius:8px;font-weight:700;font-size:16px}
.btn:hover{background:var(--brand-dark);text-decoration:none}
.btn-ghost{background:transparent;color:var(--brand);box-shadow:inset 0 0 0 2px var(--brand)}
.btn-ghost:hover{background:var(--soft);color:var(--brand-dark)}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:40px 0}
.card{background:var(--soft);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.card h2{font-size:19px;margin:0 0 8px}
.card p{margin:0;font-size:15.5px;color:var(--muted)}
.home-articles,.home-cats{margin-top:44px}
.home-articles h2,.home-cats h2{font-size:24px;margin:0 0 6px}
.section-sub{color:var(--muted);font-size:16px;margin:0 0 18px}

/* Article lists */
.article-list{list-style:none;margin:0;padding:0}
.article-list li{padding:16px 0;border-bottom:1px solid var(--line)}
.al-title{font-size:19px;font-weight:700;display:block}
.al-desc{display:block;color:var(--muted);font-size:15px;margin-top:4px}
.al-cats{display:block;color:var(--brand);font-size:12.5px;margin-top:6px;text-transform:uppercase;letter-spacing:.04em}
.article-list.big .al-title{font-size:20px}
.more{font-weight:700}

/* Category grid */
.cat-grid,.cat-intro{margin:0}
.cat-grid{list-style:none;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.cat-grid a{display:block;background:var(--soft);border:1px solid var(--line);border-radius:8px;padding:14px 16px;font-weight:600;color:var(--fg)}
.cat-grid a:hover{border-color:var(--brand);color:var(--brand);text-decoration:none}
.cat-grid span{color:var(--muted);font-weight:400;font-size:14px}
.cat-intro{color:#33413d;font-size:19px;margin-bottom:20px}

/* Footer */
.site-footer{margin-top:60px;background:#0f1a18;color:#c8d4d1}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:30px;padding:44px 20px 30px}
.site-footer h3{color:#fff;font-size:15px;text-transform:uppercase;letter-spacing:.05em;margin:0 0 12px}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin:0 0 8px}
.site-footer a{color:#c8d4d1;font-size:15px}
.site-footer a:hover{color:#fff}
.foot-brand{font-size:22px;font-weight:800;color:#fff;margin:0 0 10px}
.foot-desc{font-size:14.5px;color:#93a5a1;max-width:40ch;margin:0}
.foot-bottom{border-top:1px solid #22302d;padding:16px 20px;font-size:13.5px;color:#7f918d}
.foot-bottom p{margin:0}

@media (max-width:820px){
  body{font-size:17px}
  main:has(.sidebar){grid-template-columns:1fr}
  .sidebar{position:static;border-top:1px solid var(--line);padding-top:20px}
  .cards,.cat-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr}
  .nav-toggle{display:flex}
  .site-nav{display:none;width:100%;order:3}
  .site-nav.open{display:block}
  .site-nav ul{flex-direction:column;gap:0;padding:8px 0}
  .site-nav li{border-top:1px solid var(--line)}
  .site-nav a{display:block;padding:12px 0}
  .header-inner{flex-wrap:wrap}
  .hero h1{font-size:31px}
  .lead{font-size:18px}
}
@media (max-width:520px){
  .cards,.cat-grid{grid-template-columns:1fr}
  .page-title{font-size:27px}
}