:root{
  --ink:#0A2A20; --pine:#123E30; --forest:#14503D; --signal:#17BE80; --glow:#6FEDB4; --accent-ink:#0E7A50;
  --paper:#F4F7F3; --mist:#E6EDE7; --line:#D3DED7; --white:#FFFFFF; --muted:#4B6157;
  --display:'Bricolage Grotesque',system-ui,sans-serif;
  --body:'Hanken Grotesk',system-ui,sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,monospace;
  --maxw:760px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--body);background:var(--paper);color:var(--ink);line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--forest);text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.wrap.wide{max-width:1140px}
h1,h2,h3{font-family:var(--display);font-weight:800;line-height:1.1;letter-spacing:-.025em;color:var(--ink)}
.eyebrow{font-family:var(--mono);font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-ink);font-weight:500;display:inline-flex;gap:.5ch}
.eyebrow::before{content:"["}.eyebrow::after{content:"]"}

header{position:sticky;top:0;z-index:50;backdrop-filter:saturate(1.2) blur(10px);background:rgba(244,247,243,.82);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px;max-width:1140px;margin:0 auto;padding:0 24px}
.brand{display:flex;align-items:center;gap:11px}
.brand svg{height:30px;display:block}
.wordmark{font-family:var(--display);font-weight:800;font-size:1.4rem;letter-spacing:-.035em;color:var(--forest)}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{font-size:.95rem;color:var(--muted);font-weight:500}
.nav-links a:hover{color:var(--ink)}
.nav-toggle{display:none;align-items:center;justify-content:center;width:44px;height:44px;margin-right:-8px;border:none;background:transparent;color:var(--ink);cursor:pointer;border-radius:10px;transition:background .15s}
.nav-toggle:hover{background:var(--mist)}
.btn{display:inline-flex;align-items:center;gap:.4rem;font-family:var(--body);font-weight:600;font-size:.95rem;padding:.6rem 1.05rem;border-radius:11px;border:none;cursor:pointer;background:var(--signal);color:#06241a;transition:transform .15s,box-shadow .2s}
.btn::before{content:"[";font-family:var(--mono);opacity:.55}.btn::after{content:"]";font-family:var(--mono);opacity:.55}
.btn:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(23,190,128,.34)}

/* blog index */
.blog-hero{padding:64px 0 32px}
.blog-hero h1{font-size:clamp(2.2rem,4.4vw,3.2rem);margin:14px 0 14px}
.blog-hero p{color:var(--muted);font-size:1.12rem;max-width:54ch}
.posts{padding:20px 0 90px;display:grid;gap:18px}
.post-card{display:block;background:var(--white);border:1px solid var(--line);border-radius:16px;padding:28px;transition:border-color .15s,transform .15s}
.post-card:hover{border-color:var(--accent-ink);transform:translateY(-2px)}
.post-card .meta{font-family:var(--mono);font-size:.72rem;color:var(--muted);letter-spacing:.04em;margin-bottom:10px}
.post-card h2{font-size:1.4rem;margin-bottom:8px;color:var(--ink)}
.post-card p{color:var(--muted);font-size:1rem}

/* article */
article{padding:54px 0 30px}
.crumbs{font-family:var(--mono);font-size:.74rem;color:var(--muted);margin-bottom:22px}
.crumbs a{color:var(--muted)}.crumbs a:hover{color:var(--ink)}
article h1{font-size:clamp(2.1rem,4.2vw,3rem);margin:12px 0 16px}
.byline{font-family:var(--mono);font-size:.76rem;color:var(--muted);letter-spacing:.04em;padding-bottom:26px;margin-bottom:30px;border-bottom:1px solid var(--line)}
article h2{font-size:1.6rem;margin:42px 0 14px}
article h3{font-size:1.2rem;margin:28px 0 8px}
article p{margin:0 0 18px;font-size:1.08rem;color:#243f35}
article ul,article ol{margin:0 0 18px 1.2em;color:#243f35}
article li{margin-bottom:8px;font-size:1.08rem}
article strong{color:var(--ink)}
article .lede{font-size:1.22rem;color:var(--ink);font-weight:500;line-height:1.55}
blockquote{margin:26px 0;padding:18px 22px;background:var(--white);border-left:3px solid var(--signal);border-radius:0 12px 12px 0;color:var(--ink);font-size:1.1rem}
.callout{margin:30px 0;padding:26px 28px;background:var(--ink);color:var(--paper);border-radius:18px}
.callout h3{color:var(--white);margin:0 0 8px}
.callout p{color:#A9C3B8;margin:0 0 16px}
.faq-block{margin-top:46px}
details{border-bottom:1px solid var(--line);padding:18px 0}
details summary{font-family:var(--display);font-weight:600;font-size:1.08rem;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px;color:var(--ink)}
details summary::-webkit-details-marker{display:none}
details summary::after{content:"+";font-family:var(--mono);color:var(--accent-ink);font-size:1.3rem;transition:transform .2s}
details[open] summary::after{transform:rotate(45deg)}
details p{margin:12px 0 0;font-size:1.02rem}

footer{padding:0;border-top:1px solid var(--line);margin-top:30px}
.foot{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:32px;max-width:1140px;margin:0 auto;padding:48px 24px 32px}
.foot-brand .brand{margin-bottom:14px}
.foot-brand .wordmark{font-size:1.2rem}
.foot-brand p{font-size:.92rem;color:var(--muted);max-width:34ch;margin-bottom:12px}
.foot-brand a.mail{font-family:var(--mono);font-size:.8rem;color:var(--forest)}
.foot-col{display:flex;flex-direction:column;gap:10px}
.foot-col .h{font-family:var(--mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.foot-col a{color:var(--ink);font-size:.92rem;font-weight:500}
.foot-col a:hover{color:var(--accent-ink)}
.foot-bottom{border-top:1px solid var(--line)}
.foot-bottom .wrap{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;padding-top:20px;padding-bottom:20px;max-width:1140px}
.foot-bottom small,.foot-bottom .made{color:var(--muted);font-family:var(--mono);font-size:.72rem}
@media (max-width:760px){
  .nav-toggle{display:inline-flex}
  .nav-links{position:absolute;top:72px;left:0;right:0;display:none;flex-direction:column;align-items:stretch;gap:0;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:0 10px 30px rgba(10,42,32,.08);padding:6px 24px 16px}
  header.menu-open .nav-links{display:flex}
  .nav-links a:not(.btn){padding:14px 2px;border-bottom:1px solid var(--mist);font-size:1.02rem;color:var(--ink);font-weight:500}
  .nav-links .btn{width:100%;justify-content:center;margin-top:14px}
  .foot{grid-template-columns:1fr 1fr}
  .foot-brand{grid-column:1 / -1}
}