:root{
  --bg:#f7f8fa;
  --card:#ffffff;
  --text:#1f2937;
  --muted:#667085;
  --line:#e5e7eb;
  --accent:#1f5f4a;
  --accent2:#eaf4ef;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text);line-height:1.65}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.wrap{max-width:1080px;margin:0 auto;padding:0 22px}
.nav{display:flex;align-items:center;justify-content:space-between;min-height:68px;gap:20px}
.brand{font-weight:800;font-size:1.2rem;color:#14261f}
nav{display:flex;gap:16px;flex-wrap:wrap;font-size:.95rem}
.hero{padding:72px 0 54px}
.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:32px;align-items:center}
.eyebrow{display:inline-block;background:var(--accent2);color:var(--accent);padding:6px 10px;border-radius:999px;font-size:.85rem;font-weight:700}
h1{font-size:clamp(2rem,5vw,3.7rem);line-height:1.08;margin:14px 0}
h2{margin-top:0;font-size:1.75rem}
h3{margin-bottom:.4rem}
.lead{font-size:1.15rem;color:var(--muted);max-width:760px}
.panel,.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:24px}
.panel ul{padding-left:20px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card p{color:var(--muted)}
.section{padding:34px 0 54px}
.badge{font-size:.78rem;background:#f1f5f9;padding:5px 8px;border-radius:999px;color:#475569}
.article{max-width:820px;margin:0 auto;padding:46px 22px 70px}
.article h1{font-size:2.6rem}
.article h2{margin-top:36px}
.article p,.article li{font-size:1.04rem}
.callout{border-left:4px solid var(--accent);background:var(--accent2);padding:14px 18px;margin:24px 0;border-radius:8px}
footer{border-top:1px solid var(--line);background:#fff;margin-top:40px}
.footer{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;padding:28px 0;color:var(--muted);font-size:.9rem}
.small{font-size:.9rem;color:var(--muted)}
.notice{background:#fff7ed;border:1px solid #fed7aa;color:#9a3412;padding:14px 16px;border-radius:10px}
@media(max-width:800px){
 .hero-grid,.grid{grid-template-columns:1fr}
 .nav{align-items:flex-start;padding:14px 0;flex-direction:column}
 header{position:static}
 .hero{padding-top:44px}
}