/* 主题4 生态绿色 */
:root{--c:#2d8659;--c2:#0f3a2e;--a:#5fc78e;--s:#e8f5ec;--txt:#1a3028;--muted:#5a7068}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;color:var(--txt);line-height:1.7;background:#fff;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:1280px;margin:0 auto;padding:0 24px}
.nav{position:fixed;top:0;left:0;right:0;z-index:999;background:rgba(255,255,255,.94);backdrop-filter:blur(16px);border-bottom:1px solid rgba(45,134,89,.12)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{font-size:22px;font-weight:800;color:var(--c2);display:flex;align-items:center;gap:8px}
.logo::before{content:"●";color:var(--c);font-size:18px}
.nav-menu{display:flex;gap:36px}
.nav-menu a{font-size:15px;font-weight:500;color:#333;transition:color .2s}
.nav-menu a:hover{color:var(--c)}
.nav-cta{padding:10px 22px;background:var(--c);color:#fff!important;border-radius:100px;font-weight:600;font-size:14px;box-shadow:0 4px 12px rgba(45,134,89,.3)}
.hero{position:relative;min-height:720px;background:linear-gradient(160deg,#0f3a2e 0%,#1f6047 50%,#2d8659 100%);color:#fff;padding-top:72px;display:flex;align-items:center;overflow:hidden}
.hero::before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:radial-gradient(circle at 30% 20%,rgba(95,199,142,.3),transparent 50%),radial-gradient(circle at 70% 80%,rgba(45,134,89,.4),transparent 50%)}
.hero::after{content:"";position:absolute;bottom:0;left:0;right:0;height:160px;background:linear-gradient(180deg,transparent,rgba(232,245,236,.1))}
.hero-inner{position:relative;z-index:2;max-width:1280px;margin:0 auto;padding:80px 24px;display:grid;grid-template-columns:1.2fr 1fr;gap:64px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:8px 18px;background:rgba(95,199,142,.18);border:1px solid var(--a);border-radius:100px;font-size:13px;margin-bottom:24px}
.hero-badge::before{content:"";width:8px;height:8px;background:var(--a);border-radius:50%;box-shadow:0 0 8px var(--a);animation:blink 2s infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.3}}
.hero h1{font-size:54px;font-weight:900;line-height:1.2;margin-bottom:24px;letter-spacing:-1px}
.hero h1 .hl{color:var(--a)}
.hero .lead{font-size:18px;opacity:.9;margin-bottom:40px;max-width:560px;line-height:1.8}
.hero-cta{display:inline-flex;align-items:center;gap:10px;padding:16px 36px;background:var(--a);color:var(--c2);border-radius:100px;font-weight:700;font-size:16px;box-shadow:0 12px 32px rgba(95,199,142,.3);transition:all .3s}
.hero-cta:hover{background:#7ad89f;transform:translateY(-3px);box-shadow:0 16px 40px rgba(95,199,142,.5)}
.hero-card{position:relative;background:rgba(255,255,255,.06);border:1px solid rgba(95,199,142,.25);border-radius:24px;padding:32px;backdrop-filter:blur(20px)}
.hero-card h3{font-size:18px;margin-bottom:20px;display:flex;align-items:center;gap:10px}
.mini-item{display:flex;align-items:center;gap:14px;padding:12px 0;border-bottom:1px solid rgba(95,199,142,.15);font-size:14px}
.mini-item:last-child{border:0}
.mini-item .dot{width:32px;height:32px;background:linear-gradient(135deg,var(--c),var(--a));border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:16px}
section{padding:96px 0}
.adv-bg{background:linear-gradient(180deg,var(--s) 0%,#fff 100%)}
.section-head{text-align:center;max-width:760px;margin:0 auto 64px}
.section-eyebrow{display:inline-block;padding:5px 18px;background:var(--s);color:var(--c);border-radius:100px;font-size:13px;font-weight:600;margin-bottom:16px}
.section-head h2{font-size:42px;font-weight:900;line-height:1.3;margin-bottom:16px;letter-spacing:-1px}
.section-head p{font-size:17px;color:var(--muted);line-height:1.8}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card{background:#fff;border:1px solid #d8e8df;border-radius:16px;padding:32px 28px;transition:all .3s;position:relative;overflow:hidden}
.card::before{content:"";position:absolute;top:0;left:0;width:100%;height:4px;background:linear-gradient(90deg,var(--c),var(--a));transform:scaleX(0);transform-origin:left;transition:transform .4s}
.card:hover{transform:translateY(-6px);box-shadow:0 24px 50px rgba(45,134,89,.12);border-color:transparent}
.card:hover::before{transform:scaleX(1)}
.card .ic{width:48px;height:48px;background:var(--s);border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--c);margin-bottom:18px}
.card h3{font-size:19px;font-weight:700;margin-bottom:10px}
.card p{color:var(--muted);font-size:14px;line-height:1.8}
.process{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.proc-step{background:#fff;padding:32px 24px;border-radius:16px;border:1px solid #d8e8df;text-align:center;transition:all .3s}
.proc-step:hover{border-color:var(--c);box-shadow:0 16px 40px rgba(45,134,89,.1)}
.proc-step .n{width:64px;height:64px;margin:0 auto 16px;background:linear-gradient(135deg,var(--c),var(--a));color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:900}
.proc-step h4{font-size:17px;margin-bottom:8px}
.proc-step p{font-size:14px;color:var(--muted)}
.faq-item{background:#fff;border:1px solid #d8e8df;border-radius:14px;padding:22px 26px;margin-bottom:12px;cursor:pointer;transition:all .2s}
.faq-item:hover{border-color:var(--c)}
.faq-q{display:flex;justify-content:space-between;font-weight:600;font-size:16px}
.faq-q::after{content:"+";color:var(--c);font-size:24px;font-weight:300}
.faq-item.open .faq-q::after{content:"-"}
.faq-a{margin-top:14px;color:var(--muted);font-size:14px;line-height:1.8;display:none}
.faq-item.open .faq-a{display:block}
.cta-bg{background:linear-gradient(135deg,#0f3a2e,#2d8659);color:#fff;border-radius:24px;padding:80px 64px;position:relative;overflow:hidden}
.cta-bg::before{content:"";position:absolute;top:-100px;right:-100px;width:500px;height:500px;background:radial-gradient(circle,rgba(95,199,142,.4),transparent 70%)}
.cta-form{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:40px;max-width:600px;position:relative;z-index:2}
.cta-form input{padding:16px 20px;background:rgba(255,255,255,.08);border:1px solid rgba(95,199,142,.3);color:#fff;font-size:15px;font-family:inherit;border-radius:12px}
.cta-form input::placeholder{color:rgba(255,255,255,.6)}
.cta-form button{grid-column:1/-1;padding:18px;background:var(--a);color:var(--c2);border:0;font-size:16px;font-weight:700;cursor:pointer;font-family:inherit;border-radius:12px}
footer{background:#0a1f18;color:#a8c8b8;padding:60px 0 30px;margin-top:80px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:48px;margin-bottom:48px}
.foot-col h5{color:#fff;font-size:15px;margin-bottom:20px;letter-spacing:2px}
.foot-col a{display:block;font-size:14px;padding:6px 0;transition:color .2s}
.foot-col a:hover{color:var(--a)}
.foot-city{display:grid;grid-template-columns:repeat(5,1fr);gap:8px 12px;margin-top:24px}
.foot-city a{font-size:13px;padding:6px 0;color:#7a9080}
.foot-city a:hover{color:var(--a)}
.foot-bot{border-top:1px solid rgba(95,199,142,.2);padding-top:24px;display:flex;justify-content:space-between;font-size:13px;color:#6a8070}
@media (max-width:980px){
  .nav-menu{display:none}
  .hero-inner,.grid-3,.grid-4,.foot-grid,.process{grid-template-columns:1fr;gap:32px}
  .hero h1{font-size:36px}
  .section-head h2{font-size:30px}
  .cta-bg{padding:48px 24px}
  .foot-city{grid-template-columns:repeat(3,1fr)}
}