:root{--g:#1f6f4a;--g2:#e9f4ee;--ink:#1d2421;--mut:#5d6964;--bd:#dfe6e2}
*{box-sizing:border-box}body{margin:0;font:16px/1.65 system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink)}
a{color:var(--g)}img{max-width:100%;display:block}.wrap{max-width:1180px;margin:auto;padding:0 20px}
.topbar{background:var(--g);color:#fff;font-size:13px;padding:6px 0}.topbar .wrap{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}.topbar a{color:#fff}
header{position:sticky;top:0;background:#fff;border-bottom:1px solid var(--bd);z-index:9}
header .wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{font-weight:700;font-size:20px;text-decoration:none;color:var(--ink)}.logo small{display:block;font-size:11px;font-weight:500;color:var(--g)}
nav a{margin-left:22px;text-decoration:none;color:var(--ink);font-weight:500}nav a.on,nav a:hover{color:var(--g)}
.burger{display:none;background:none;border:0;font-size:26px}
.hero{background:linear-gradient(90deg,rgba(10,40,25,.85),rgba(10,40,25,.35)),url(../img/boards-colors.jpg) center/cover;color:#fff;padding:110px 0}
.hero h1{font-size:46px;line-height:1.15;margin:0 0 16px;max-width:680px}.hero p{max-width:600px;font-size:18px;opacity:.92}
.btn{display:inline-block;background:var(--g);color:#fff;padding:12px 26px;border-radius:6px;text-decoration:none;font-weight:600;border:0;cursor:pointer;font-size:16px}.btn.alt{background:#fff;color:var(--g)}
section{padding:70px 0}section.tint{background:var(--g2)}h2{font-size:32px;margin:0 0 10px}.lead{color:var(--mut);margin:0 0 34px}
.grid{display:grid;gap:22px;grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}
.card{background:#fff;border:1px solid var(--bd);border-radius:10px;overflow:hidden}.card img{aspect-ratio:4/3;object-fit:cover;width:100%}.card .b{padding:16px 18px}.card h3{margin:0 0 6px;font-size:18px}.card p{margin:0;color:var(--mut);font-size:15px}
.feat{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:14px}.feat div{background:#fff;border-left:4px solid var(--g);padding:14px 16px;border-radius:6px}.feat b{display:block}.feat span{color:var(--mut);font-size:14px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
table{width:100%;border-collapse:collapse;background:#fff}th,td{border:1px solid var(--bd);padding:10px 14px;text-align:left;font-size:15px}th{background:var(--g2);width:40%}caption{text-align:left;font-weight:700;padding:16px 0 8px}
.note{font-size:13px;color:var(--mut)}.ph{background:#fff7d6;border:1px dashed #c9a400;padding:2px 6px;border-radius:4px}
.auth{border:2px dashed var(--g);border-radius:10px;min-height:340px;display:flex;align-items:center;justify-content:center;text-align:center;color:var(--mut);background:#fff;padding:20px}
form{display:grid;gap:14px;grid-template-columns:1fr 1fr}form .full{grid-column:1/-1}label{font-size:14px;font-weight:600}input,select,textarea{width:100%;padding:10px 12px;border:1px solid var(--bd);border-radius:6px;font:inherit}
footer{background:#13221b;color:#c8d3cd;padding:44px 0 20px;font-size:14px}footer a{color:#fff}footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}footer .legal{border-top:1px solid #2d3f36;margin-top:30px;padding-top:16px;font-size:12px}
@media(max-width:820px){.two,form,footer .cols{grid-template-columns:1fr}.hero h1{font-size:32px}nav{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;border-bottom:1px solid var(--bd);padding:10px 20px}nav.open{display:block}nav a{display:block;margin:10px 0}.burger{display:block}}