:root{color-scheme:light;--ink:#172622;--muted:#465b53;--paper:#f7f6ee;--line:#cdd8ce;--accent:#146646}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font:1rem/1.7 system-ui,"Microsoft YaHei",sans-serif}
a{color:var(--accent);text-underline-offset:.2em}
a:focus-visible{outline:2px solid var(--accent);outline-offset:4px}
header,main,footer{width:min(1080px,calc(100% - 3rem));margin-inline:auto}
.top,footer{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem;padding:1rem 0}
.top{border-bottom:1px solid var(--line)}
footer{border-top:1px solid var(--line);color:var(--muted)}
nav{display:flex;gap:clamp(.65rem,3vw,2rem);flex-wrap:wrap}
.brand{font-size:1.35rem;font-weight:800;color:var(--ink);text-decoration:none}.brand span{color:var(--accent);margin-left:.15em}
section,.prose{padding-block:clamp(2rem,7vw,5rem)}
section+section{border-top:1px solid var(--line)}
.hero{background:radial-gradient(ellipse at right center,#d5eadb 0,transparent 70%)}
.eyebrow{font-size:.83rem;font-weight:750;letter-spacing:.1em;color:var(--accent);margin:0 0 1rem}
h1,h2,h3{line-height:1.2;margin:0 0 .7em}
h1{font-size:clamp(2.65rem,8vw,5.9rem);letter-spacing:-.045em}
h2{font-size:clamp(1.65rem,4vw,2.7rem)}h3{font-size:1.2rem}
p,li{color:var(--muted);overflow-wrap:anywhere}strong{color:var(--ink)}
.intro{font-size:1.15rem;max-width:34em}.button{display:inline-flex;gap:1rem;align-items:center;background:var(--accent);color:white;padding:.75rem 1.1rem;text-decoration:none;font-weight:650;border-radius:.35rem}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,16rem),1fr));gap:1rem}
article{border:1px solid var(--line);background:#fcfcf7;padding:1.25rem;border-radius:.45rem}
article p{margin-bottom:0}.prose{max-width:800px}.prose h1{font-size:clamp(2.45rem,6vw,4rem)}.prose h2{font-size:1.3rem;margin-top:1.7em}.prose li+li{margin-top:.5rem}.prose ul,.prose ol{padding-left:1.4rem}.prose>p:first-of-type{font-size:1.04rem}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}