body{font-family:system-ui,sans-serif;margin:0;color:#222}
header{background:#1f3a2e;color:#fff;padding:16px 32px;display:flex;justify-content:space-between;align-items:center}
header h1{margin:0;font-size:22px}nav a{color:#cfe8d8;margin-left:16px;text-decoration:none}
main{max-width:960px;margin:24px auto;padding:0 16px}
.hero{background:#e8f1ec;padding:32px;border-radius:8px;margin-bottom:24px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px}
article{border:1px solid #ddd;border-radius:8px;padding:12px}
.img{height:120px;background:#d5dfd9;border-radius:6px;margin-bottom:8px}
button{background:#1f3a2e;color:#fff;border:0;padding:8px 12px;border-radius:4px}
footer{text-align:center;padding:24px;color:#666;font-size:13px}
table{border-collapse:collapse;width:100%;margin:12px 0}td,th{border:1px solid #ddd;padding:6px 10px;text-align:left;font-size:14px}
code{background:#f3f3f3;padding:1px 4px;border-radius:3px}

.sm{max-width:1100px}
.sm__title{font-size:44px;text-align:center;margin:24px 0 40px;color:#1d1a3a}
.sm__section{margin-bottom:36px}
.sm__section h2{font-size:28px;margin:0 0 12px;color:#1d1a3a}
.sm__list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);column-gap:48px}
.sm__list li{border-bottom:1px solid #ddd}
.sm__list a{display:block;padding:18px 0;color:#555;text-decoration:none;font-size:18px}
.sm__list a:hover{color:#1f3a2e}
@media(max-width:800px){.sm__list{grid-template-columns:1fr}}