:root{color-scheme:light;--ink:#171b1a;--muted:#5e6764;--line:#dce2de;--paper:#f8f9f6;--white:#fff;--accent:#285744}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif}
a{color:var(--accent);text-underline-offset:3px}
a:hover{color:#153a2b}
a:focus-visible{outline:3px solid var(--accent);outline-offset:4px;border-radius:2px}
.site-header{border-bottom:1px solid var(--line);background:var(--white)}
.header-inner{max-width:1080px;margin:auto;padding:22px 28px;display:flex;justify-content:space-between;align-items:center;gap:20px}
.brand{font-size:19px;font-weight:750;letter-spacing:-.05em;color:var(--ink);text-decoration:none}
.header-label{color:var(--muted);font-size:13px}
main{max-width:1080px;margin:auto;padding:48px 28px 88px;display:grid;grid-template-columns:minmax(0,1fr) 230px;gap:72px}
.eyebrow{margin:0 0 10px;color:var(--accent);font-size:12px;font-weight:700;letter-spacing:.12em;text-transform:uppercase}
h1{font-size:clamp(36px,5vw,60px);line-height:1.08;letter-spacing:-.055em;margin:0 0 18px;max-width:720px}
.intro{font-size:18px;line-height:1.65;color:#404b46;max-width:710px;margin:0 0 18px}
.updated{font-size:13px;color:var(--muted);margin:0 0 40px}
.content{min-width:0}
.content section{border-top:1px solid var(--line);padding:28px 0 30px;scroll-margin-top:28px}
h2{font-size:23px;line-height:1.25;letter-spacing:-.03em;margin:0 0 14px}
h3{font-size:17px;margin:22px 0 6px}
p{margin:0 0 15px}
ul,ol{padding-left:21px;margin:0 0 17px}
li+li{margin-top:7px}
.note{background:#edf3ee;border-left:3px solid var(--accent);padding:18px 20px;margin:22px 0;border-radius:0 8px 8px 0}
.sidebar{position:sticky;top:26px;align-self:start;border-left:1px solid var(--line);padding-left:22px}
.sidebar strong{display:block;font-size:12px;letter-spacing:.09em;text-transform:uppercase;margin-bottom:12px}
.sidebar a{display:block;color:#4c5751;font-size:13px;text-decoration:none;padding:5px 0}
.sidebar a:hover{text-decoration:underline;color:var(--accent)}
.footer{border-top:1px solid var(--line);padding:24px 28px;color:var(--muted);font-size:13px}
.footer-inner{max-width:1080px;margin:auto;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
@media(max-width:760px){.header-inner{padding:18px 20px}main{display:block;padding:36px 20px 62px}.sidebar{position:static;border:0;border-top:1px solid var(--line);padding:24px 0 0;margin-top:30px}.content section{padding:24px 0}.intro{font-size:17px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}