*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"PingFang SC","Microsoft YaHei",sans-serif;color:#2d3a2f;line-height:1.7;background:#fafaf7}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
/* header */
.top-bar{background:#1f3a24;color:#cfd8cc;font-size:13px;padding:8px 0}
.top-bar .container{display:flex;justify-content:space-between}
header{background:#fff;border-bottom:1px solid #e5e9e0;position:sticky;top:0;z-index:100;box-shadow:0 2px 8px rgba(0,0,0,.04)}
.nav{display:flex;align-items:center;justify-content:space-between;padding:18px 0}
.logo{font-size:26px;font-weight:700;color:#1f3a24;letter-spacing:2px}
.logo span{color:#8bb174}
.menu{display:flex;gap:34px;list-style:none}
.menu a{font-size:15px;font-weight:500;padding:8px 0;border-bottom:2px solid transparent;transition:.3s}
.menu a:hover,.menu a.active{color:#8bb174;border-color:#8bb174}
/* hero */
.hero{height:560px;background:linear-gradient(rgba(31,58,36,.35),rgba(31,58,36,.55)),url('https://images.unsplash.com/photo-1523348837708-15d4a09cfac2?w=1600&auto=format') center/cover;color:#fff;display:flex;align-items:center}
.hero h1{font-size:52px;font-weight:700;margin-bottom:18px;letter-spacing:4px}
.hero p{font-size:18px;max-width:560px;margin-bottom:28px;opacity:.95}
.btn{display:inline-block;background:#8bb174;color:#fff;padding:14px 36px;border-radius:2px;font-size:15px;transition:.3s}
.btn:hover{background:#6d9458}
.btn.outline{background:transparent;border:2px solid #fff;margin-left:12px}
/* section */
.section{padding:80px 0}
.section-title{text-align:center;margin-bottom:60px}
.section-title h2{font-size:36px;color:#1f3a24;margin-bottom:12px}
.section-title .sub{color:#8bb174;letter-spacing:3px;font-size:13px;text-transform:uppercase}
.section-title .line{width:60px;height:3px;background:#8bb174;margin:18px auto}
/* cards */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}
.card{background:#fff;border-radius:6px;overflow:hidden;box-shadow:0 4px 16px rgba(0,0,0,.06);transition:.3s}
.card:hover{transform:translateY(-6px);box-shadow:0 12px 32px rgba(0,0,0,.1)}
.card-img{height:200px;background:#e8ede2 center/cover no-repeat}
.card-body{padding:22px}
.card-body h3{color:#1f3a24;margin-bottom:8px;font-size:18px}
.card-body p{color:#6b7568;font-size:14px}
/* about-hero */
.page-banner{height:280px;background:linear-gradient(rgba(31,58,36,.5),rgba(31,58,36,.5)),url('https://images.unsplash.com/photo-1416879595882-3373a0480b5b?w=1600') center/cover;color:#fff;display:flex;align-items:center;justify-content:center;text-align:center}
.page-banner h1{font-size:42px;letter-spacing:4px}
.page-banner .crumb{margin-top:10px;opacity:.85}
/* about content */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.two-col img{border-radius:6px}
.two-col h3{color:#1f3a24;font-size:26px;margin-bottom:18px}
.two-col p{color:#4a5a4c;margin-bottom:14px}
/* stats */
.stats{background:#1f3a24;color:#fff;padding:60px 0;margin:60px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat .num{font-size:46px;color:#8bb174;font-weight:700}
.stat .lbl{margin-top:8px;opacity:.85}
/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.contact-info div{padding:18px;border-left:3px solid #8bb174;margin-bottom:18px;background:#fff}
.contact-info h4{color:#1f3a24;margin-bottom:4px}
.form input,.form textarea{width:100%;padding:12px;margin-bottom:14px;border:1px solid #d5dcce;font-family:inherit}
.form textarea{min-height:140px;resize:vertical}
/* footer */
footer{background:#1a2e1e;color:#b5c0b0;padding:50px 0 20px}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:30px}
.foot-grid h4{color:#fff;margin-bottom:14px}
.foot-grid a{display:block;padding:4px 0;opacity:.8}
.foot-grid a:hover{opacity:1;color:#8bb174}
.copy{border-top:1px solid #2d4531;padding-top:18px;text-align:center;font-size:13px;opacity:.6}
@media(max-width:768px){.menu{display:none}.two-col,.contact-grid,.foot-grid{grid-template-columns:1fr}.stats-grid{grid-template-columns:repeat(2,1fr)}.hero h1{font-size:34px}}