:root{
  --ink:#2e2e2e;--ink-soft:#555;--line:#e7e9e4;--green:#78c322;--green-dk:#5f9e2d;--green-br:#aae467;
  --bg:#ffffff;--surface:#f7f9f4;
}
@media (prefers-color-scheme:dark){
  :root{--ink:#ececec;--ink-soft:#b6b9b2;--line:#2a2d28;--bg:#14160f;--surface:#1b1e16;}
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:var(--green-dk)}
.wrap{max-width:820px;margin:0 auto;padding:0 20px}
header{border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--bg) 90%,transparent);position:sticky;top:0;z-index:5}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px;max-width:1080px;margin:0 auto;padding:0 20px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand img{height:30px;display:block}
.nav a.back{text-decoration:none;color:var(--ink-soft);font-weight:600;font-size:.92rem}
.nav a.back:hover{color:var(--green-dk)}
.hero{background:var(--surface);border-bottom:1px solid var(--line)}
.hero .wrap{padding:48px 20px 40px}
.hero .kick{font-weight:700;letter-spacing:.12em;text-transform:uppercase;font-size:.72rem;color:var(--green-dk)}
.hero h1{font-size:clamp(1.8rem,4vw,2.6rem);letter-spacing:-.02em;margin:10px 0 8px}
.hero .meta{color:var(--ink-soft);font-size:.92rem;margin:0}
main{padding:40px 0 10px}
main .wrap{max-width:820px}
.intro{color:var(--ink-soft);margin:0 0 28px}
h2{font-size:1.12rem;margin:30px 0 6px;letter-spacing:-.01em;scroll-margin-top:80px}
.clause{padding:16px 0;border-bottom:1px solid var(--line)}
.clause:last-child{border-bottom:none}
.clause .n{display:inline-block;min-width:2.1em;font-weight:800;color:var(--green-dk)}
.clause h3{display:inline;font-size:1.02rem;margin:0}
.clause p{margin:8px 0 0;color:var(--ink)}
.callout{background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--green);
  border-radius:10px;padding:16px 18px;margin:22px 0;color:var(--ink-soft);font-size:.92rem}
.toc{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:18px 20px;margin:0 0 32px}
.toc h4{margin:0 0 10px;font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-soft)}
.toc ol{margin:0;padding-left:1.3em;columns:2;column-gap:28px;font-size:.9rem}
.toc a{text-decoration:none}
.toc a:hover{text-decoration:underline}
@media(max-width:620px){.toc ol{columns:1}}
footer{border-top:1px solid var(--line);margin-top:30px}
footer .wrap{padding:26px 20px;color:var(--ink-soft);font-size:.86rem;text-align:center}
footer a{color:var(--ink-soft)}