:root{--ink:#111827;--paper:#ffffff;--rule:#e5e7eb;--accent:#0f766e;--muted:#4b5563;--band:#0b1f1d}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.6 system-ui,"Segoe UI",Helvetica,Arial,sans-serif}
header{background:var(--band);color:#fff;padding:22px 0 18px}
header>div,main,footer{max-width:760px;margin:0 auto;padding:0 20px}
.brand{font:700 15px/1 system-ui,"Segoe UI",Helvetica,Arial,sans-serif;letter-spacing:.06em;text-transform:uppercase;color:#9ee6dc;text-decoration:none}
nav{margin:14px 0 0;display:flex;flex-wrap:wrap;gap:6px 18px;font-size:15px}
nav a{color:#fff;text-decoration:none;opacity:.85;padding-bottom:2px;border-bottom:2px solid transparent}nav a[aria-current]{opacity:1;border-color:#9ee6dc}
h1{font-size:2.1rem;line-height:1.1;margin:34px 0 14px;letter-spacing:-.01em}h2{font-size:1.25rem;line-height:1.25;margin:34px 0 10px;color:var(--accent)}
p{margin:0 0 16px}.lede{font-size:1.15rem}.lede strong{font-weight:700}
.asof{color:var(--muted);font-size:14px}
.box{border:1px solid var(--rule);border-left:4px solid var(--accent);background:#f0fdfa;padding:14px 18px;margin:18px 0;border-radius:4px}
dl{margin:0}dt{font-weight:700;margin-top:18px}dd{margin:4px 0 0}
ol,ul{padding-left:22px}li{margin-bottom:8px}
a{color:var(--accent)}
.btn{display:inline-block;background:var(--accent);color:#fff;text-decoration:none;padding:12px 18px;border-radius:6px;font-weight:700;font-size:15px}
footer{border-top:1px solid var(--rule);margin-top:48px;padding:20px 20px 40px;color:var(--muted);font-size:14px;line-height:1.5}
footer a{color:var(--muted)}
.timeline li{margin-bottom:14px}.timeline b{display:block;color:var(--accent)}
@media(max-width:480px){h1{font-size:1.7rem}body{font-size:16px}}