:root{--green:#1f7a3d;--green-d:#123d22;--ink:#1c2321;--muted:#5b6b63;--bg:#f6f8f6;--line:#e2e8e4;--accent:#e8a33d}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,"Segoe UI",Roboto,"Microsoft YaHei",sans-serif;color:var(--ink);line-height:1.65;background:#fff}
a{color:inherit;text-decoration:none}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
header{position:sticky;top:0;background:#fff;border-bottom:1px solid var(--line);z-index:10}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.logo{font-weight:800;font-size:22px;letter-spacing:1px;color:var(--green)}
.logo span{color:var(--accent)}
.nav ul{display:flex;gap:26px;list-style:none;font-size:15px}
.nav a:hover{color:var(--green)}
.lang{font-size:13px;border:1px solid var(--line);border-radius:6px;padding:5px 10px;white-space:nowrap}
.hero{background:linear-gradient(135deg,#0f3a20,#1f7a3d 70%,#2f9c52);color:#fff;padding:96px 0}
.hero h1{font-size:46px;line-height:1.14;max-width:760px;font-weight:800}
.hero p{font-size:18px;margin:18px 0 30px;opacity:.93;max-width:660px}
.btn{display:inline-block;background:var(--accent);color:#1c2321;font-weight:700;padding:14px 28px;border-radius:8px}
.btn.ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.6);margin-left:12px}
.btn:hover{filter:brightness(1.05)}
section{padding:74px 0}
.sec-title{font-size:30px;margin-bottom:10px}
.sec-sub{color:var(--muted);margin-bottom:40px}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.grid.g2{grid-template-columns:repeat(2,1fr)}
.card{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;transition:.2s;display:flex;flex-direction:column}
.card:hover{box-shadow:0 10px 30px rgba(0,0,0,.08);transform:translateY(-3px)}
.card .ph{height:140px;background:linear-gradient(135deg,#eef4ef,#dfece2);display:flex;align-items:center;justify-content:center;font-size:44px}
.card .bd{padding:18px}
.card h3{font-size:17px;margin-bottom:8px}
.card p{font-size:14px;color:var(--muted)}
.card ul{margin:10px 0 0;padding-left:16px;font-size:13px;color:var(--muted)}
.card ul li{margin:3px 0}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stats b{display:block;font-size:34px;color:var(--green)}
.stats span{font-size:14px;color:var(--muted)}
.contact-grid{display:flex;flex-wrap:wrap;gap:34px;justify-content:center;margin-top:6px}
.contact-grid>div{min-width:180px}
.contact-grid b{display:block;font-size:12px;color:var(--muted);font-weight:700;letter-spacing:.6px;text-transform:uppercase;margin-bottom:4px}
.contact-grid a{color:var(--green);font-weight:700;font-size:18px}
.cta{background:var(--bg);text-align:center}
footer{background:#14231a;color:#cdd8d1;padding:38px 0;font-size:14px;text-align:center}
@media(max-width:860px){
 .grid,.grid.g2,.stats{grid-template-columns:1fr 1fr}
 .hero h1{font-size:32px}
 .nav ul{display:none}
}
@media(max-width:520px){.grid,.grid.g2,.stats{grid-template-columns:1fr}}

/* ---- 2026-10-07 优化：移动端导航 + 卡片图片占位支持 ---- */
.mnav{display:none}
.mnav summary{list-style:none;cursor:pointer;font-size:20px;line-height:1;padding:8px 10px;border:1px solid var(--line);border-radius:8px}
.mnav summary::-webkit-details-marker{display:none}
.mnav ul{list-style:none;position:absolute;right:20px;top:64px;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 12px 30px rgba(0,0,0,.10);padding:10px 6px;min-width:180px;z-index:20}
.mnav ul li{margin:0;padding:9px 14px}
.mnav ul li a{display:block;font-size:15px}
.card .ph img{width:100%;height:100%;object-fit:cover;display:block}
@media(max-width:860px){.mnav{display:block;position:relative}}

/* ---- 2026-10-07 第二轮：无障碍与偏好 ---- */
.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;z-index:99;background:#fff;border:2px solid var(--green);border-radius:8px;padding:8px 14px;font-weight:700}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}.card:hover{transform:none}}