:root{--green:#1f5c3f;--green-d:#163f2c;--bg:#fbfaf6;--ink:#1d2421;--muted:#5b6660;--line:#e3e0d6;--card:#ffffff}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6}
a{color:var(--green)}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0;flex-wrap:wrap}
.logo{font-weight:700;font-size:1.2rem;color:var(--green-d);text-decoration:none;letter-spacing:.2px}
.logo span{color:var(--muted);font-weight:500}
nav a{margin-left:18px;text-decoration:none;color:var(--ink);font-size:.95rem}
nav a:hover,nav a.active{color:var(--green);text-decoration:underline}
.hero{padding:72px 0 56px;background:linear-gradient(180deg,#eef3ec,var(--bg))}
.hero h1{font-size:clamp(2rem,5vw,3rem);line-height:1.15;margin:0 0 16px;color:var(--green-d);max-width:18ch}
.hero p{font-size:1.1rem;color:var(--muted);max-width:56ch;margin:0 0 26px}
.btn{display:inline-block;background:var(--green);color:#fff;padding:12px 22px;border-radius:8px;text-decoration:none;font-weight:600}
.btn:hover{background:var(--green-d)}
.btn.alt{background:transparent;color:var(--green);border:1.5px solid var(--green);margin-left:10px}
section{padding:48px 0}
h2{font-size:1.6rem;margin:0 0 12px;color:var(--green-d)}
h3{margin:0 0 6px}
.grid{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:22px}
.card p{margin:0;color:var(--muted)}
.tag{display:inline-block;background:#e6efe8;color:var(--green-d);border-radius:999px;padding:4px 12px;font-size:.85rem;margin:4px 6px 4px 0}
.page-head{padding:48px 0 8px}
.page-head h1{margin:0;font-size:2.1rem;color:var(--green-d)}
.prose{max-width:70ch}
.prose h2{margin-top:32px;font-size:1.3rem}
footer{border-top:1px solid var(--line);padding:28px 0;color:var(--muted);font-size:.9rem;background:#fff}
footer .cols{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
footer a{color:var(--muted)}
@media(max-width:560px){nav a{margin:0 14px 0 0}.btn.alt{margin:10px 0 0}}