:root{
  --green-900:#14301C;
  --green-800:#1B3D24;
  --green-700:#23522F;
  --green-600:#2F6B3C;
  --green-500:#3E8C4C;
  --green-050:#EAF1E7;
  --cream:#FAF8F3;
  --cream-2:#F3F0E8;
  --ink:#1C1F1B;
  --ink-2:#4A524A;
  --ink-3:#7A827A;
  --line:#E3E0D6;
  --white:#FFFFFF;
  --radius:16px;
  --maxw:1180px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);
  background:var(--cream);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
.serif{font-family:"Songti SC","Noto Serif SC","Source Han Serif SC","STSong",Georgia,serif}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
header{position:sticky;top:0;z-index:50;background:rgba(250,248,243,.80);backdrop-filter:blur(14px) saturate(1.1);border-bottom:1px solid transparent;transition:background .3s,border-color .3s,box-shadow .3s}
header.scrolled{background:rgba(250,248,243,.96);border-bottom-color:var(--line);box-shadow:0 2px 18px rgba(28,31,27,.05)}
.nav{position:relative;display:flex;align-items:center;justify-content:space-between;height:78px;gap:24px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{width:42px;height:47px;display:grid;place-items:center;flex-shrink:0}
.brand-mark img{width:100%;height:100%;object-fit:contain}
.brand-copy{display:flex;flex-direction:column;gap:1px;line-height:1.1}
.brand-name{font-size:19px;font-weight:700;letter-spacing:.5px;line-height:1.1}
.brand-name b{color:var(--green-600)}
.brand-tag{font-size:11px;color:var(--ink-3);letter-spacing:1.5px;line-height:1.1}
.menu{display:flex;align-items:center;gap:34px;font-size:15px;color:var(--ink-2)}
.menu a{position:relative;padding:6px 0;transition:color .2s}
.menu a:hover{color:var(--green-600)}
.menu a.active{color:var(--green-600);font-weight:600}
.menu a.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--green-600);border-radius:2px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;border-radius:10px;font-size:15px;font-weight:600;padding:13px 24px;transition:transform .15s,box-shadow .2s,background .2s;white-space:nowrap;border:1px solid transparent;cursor:pointer}
.btn:hover{transform:translateY(-2px)}
.btn-dark{position:relative;overflow:hidden;background:var(--green-800);color:#fff;box-shadow:0 6px 18px rgba(27,61,36,.22)}
.btn-dark:hover{background:var(--green-700);box-shadow:0 10px 26px rgba(27,61,36,.28)}
.btn-light{background:#fff;color:var(--green-800);border-color:var(--line);box-shadow:0 4px 14px rgba(28,31,27,.06)}
.btn-dark::after{content:"";position:absolute;top:0;left:-130%;width:55%;height:100%;background:linear-gradient(100deg,rgba(255,255,255,0),rgba(255,255,255,.28),rgba(255,255,255,0));transform:skewX(-18deg);transition:left .65s ease}
.btn-dark:hover::after{left:135%}
.btn-nav{padding:11px 20px;font-size:14px}
.nav-toggle{display:none;background:none;border:none;padding:9px 11px;cursor:pointer}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s,opacity .2s}
.nav-toggle span+span{margin-top:4px}
.page-hero{position:relative;overflow:hidden;background:linear-gradient(180deg,#F6F2E9 0%,var(--cream) 100%);padding:90px 0 74px}
.page-hero::before{content:"";position:absolute;inset:0 0 auto auto;width:56%;height:100%;background:var(--page-photo,url("../images/hero-bg.jpg")) center right/cover no-repeat;opacity:1;-webkit-mask-image:linear-gradient(90deg,transparent 0%,transparent 24%,rgba(0,0,0,.35) 42%,#000 62%);mask-image:linear-gradient(90deg,transparent 0%,transparent 24%,rgba(0,0,0,.35) 42%,#000 62%)}
.page-hero .wrap{position:relative}
.crumb{display:inline-flex;align-items:center;gap:9px;color:var(--green-600);font-size:12.5px;font-weight:700;letter-spacing:3px;text-transform:uppercase}
.crumb::before{content:"";width:24px;height:2px;background:var(--green-600);border-radius:3px}
.page-hero h1{max-width:55%;font-size:clamp(38px,5vw,62px);line-height:1.2;letter-spacing:-1px;font-weight:700;margin:18px 0 20px}
.page-hero h1 span{color:var(--green-600)}
.page-hero p{max-width:min(620px,55%);color:var(--ink-2);font-size:17px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:32px}
.sec{padding:88px 0}
.sec.alt{background:var(--cream-2)}
.sec-head{max-width:720px;margin:0 0 42px}
.sec-head.center{text-align:center;margin:0 auto 48px}
.eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--green-600);font-size:12.5px;font-weight:700;letter-spacing:3px;text-transform:uppercase}
h2{font-size:clamp(28px,3.4vw,40px);line-height:1.35;letter-spacing:-.5px;font-weight:700;margin:13px 0 14px}
.sec-head p,.lead{color:var(--ink-2);font-size:16px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:start}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:0 14px 34px rgba(28,31,27,.05)}
.panel h3{font-size:20px;line-height:1.35;margin-bottom:12px}
.panel p{font-size:14.5px;color:var(--ink-2)}
.type-card{padding:0;overflow:hidden}
.type-photo{height:190px;background:var(--type-photo) center/cover no-repeat}
.type-body{padding:24px 24px 26px}
.icon{width:54px;height:54px;border-radius:14px;background:var(--green-050);display:grid;place-items:center;margin-bottom:22px;color:var(--green-600)}
.icon svg{width:26px;height:26px}
.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);background:linear-gradient(135deg,var(--green-900),var(--green-800) 55%,var(--green-700));border-radius:22px;overflow:hidden;color:#fff}
.stat{padding:34px 24px;text-align:center;border-right:1px solid rgba(255,255,255,.14)}
.stat:last-child{border-right:0}
.stat strong{display:block;font-size:32px;line-height:1.1}
.stat span{display:block;margin-top:8px;font-size:13.5px;color:rgba(255,255,255,.72)}
.feature-list{list-style:none;display:flex;flex-direction:column;gap:14px}
.feature-list li{display:flex;gap:13px;align-items:flex-start;color:var(--ink-2);font-size:15px}
.feature-list li::before{content:"";width:9px;height:9px;background:var(--green-500);border-radius:50%;margin-top:9px;flex-shrink:0}
.timeline{display:grid;gap:16px}
.step{display:grid;grid-template-columns:56px 1fr;gap:16px;align-items:start}
.step b{width:48px;height:48px;border-radius:12px;background:var(--green-800);color:#fff;display:grid;place-items:center}
.step h3{font-size:18px;margin-bottom:5px}
.step p{color:var(--ink-2);font-size:14.5px}
.project-card{display:grid;grid-template-columns:1fr 1.15fr;gap:28px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px}
.project-media{min-height:280px;border-radius:16px;background:var(--project-photo,url("../images/hero-bg.jpg")) center/cover no-repeat}
.project-meta{display:flex;gap:10px;flex-wrap:wrap;margin:16px 0 20px}
.tag{display:inline-flex;align-items:center;border:1px solid rgba(47,107,60,.18);background:var(--green-050);color:var(--green-700);border-radius:99px;padding:6px 12px;font-size:12.5px;font-weight:600}
.contact-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:34px;align-items:start}
.contact-list{list-style:none;display:grid;gap:16px}
.contact-list li{display:flex;gap:14px;align-items:flex-start;padding:18px;border:1px solid var(--line);border-radius:14px;background:#fff}
.contact-list svg{width:20px;height:20px;color:var(--green-600);margin-top:3px;flex-shrink:0}
.form-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px;box-shadow:0 18px 42px rgba(28,31,27,.07)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
label{display:flex;flex-direction:column;gap:7px;color:var(--ink-2);font-size:13px;font-weight:600}
input,textarea{width:100%;border:1px solid var(--line);border-radius:10px;background:var(--cream);padding:12px 13px;font:inherit;color:var(--ink)}
textarea{min-height:130px;resize:vertical}
.wide{grid-column:1/-1}
.cta-band{background:var(--cream-2);border:1px solid var(--line);border-radius:18px;padding:26px;display:flex;align-items:center;justify-content:space-between;gap:22px;flex-wrap:wrap}
.cta-band p{color:var(--ink-2);max-width:620px}
footer{background:var(--green-900);color:#fff;padding:64px 0 0}
.foot-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:48px}
.foot-brand .brand-name{color:#fff}
.foot-brand .brand-name b{color:#9FC08A}
.foot-brand .brand-tag{color:rgba(255,255,255,.45)}
.foot-brand p{font-size:14px;color:rgba(255,255,255,.62);margin-top:18px;line-height:1.85;max-width:290px}
.foot h4{font-size:15px;font-weight:700;margin-bottom:18px}
.foot ul{list-style:none;display:flex;flex-direction:column;gap:11px}
.foot ul li{font-size:14px;color:rgba(255,255,255,.62)}
.foot ul li a:hover{color:#9FC08A}
.contact li{display:flex;gap:11px;align-items:flex-start;line-height:1.7}
.contact svg{width:16px;height:16px;flex-shrink:0;margin-top:4px;opacity:.65}
.foot-reg{border-top:1px solid rgba(255,255,255,.12);padding:20px 0 4px;display:flex;align-items:center;gap:18px;flex-wrap:wrap;font-size:12.5px;color:rgba(255,255,255,.5)}
.reg-item{display:inline-flex;align-items:center;gap:8px;line-height:1.6}
.reg-item svg{width:14px;height:14px;opacity:.6;flex-shrink:0}
.reg-item b{font-weight:600;color:rgba(255,255,255,.74);letter-spacing:.3px}
.reg-sep{width:1px;height:12px;background:rgba(255,255,255,.18);display:inline-block}
.foot-bot{border-top:1px solid rgba(255,255,255,.12);padding:18px 0 28px;margin-top:16px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.45)}
.bot-links{display:inline-flex;align-items:center;gap:14px;flex-wrap:wrap}
.reveal{opacity:0;transform:translateY(22px);transition:opacity .65s cubic-bezier(.22,.7,.3,1),transform .65s cubic-bezier(.22,.7,.3,1);transition-delay:var(--d,0ms)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .reveal{opacity:1!important;transform:none!important}
}
@media (max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:0}
  .foot-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:900px){
  .menu,.nav .btn{display:none}
  .nav-toggle{display:block}
  .menu{position:absolute;left:34px;right:34px;top:calc(100% + 10px);background:rgba(250,248,243,.97);backdrop-filter:blur(14px);border:1px solid var(--line);border-radius:14px;box-shadow:0 18px 44px rgba(28,31,27,.12);padding:10px;flex-direction:column;align-items:stretch;gap:0}
  .menu.is-open{display:flex}
  .menu a{padding:12px 14px;border-radius:9px}
  .menu a.active::after{display:none}
  .menu a:hover,.menu a.active{background:var(--green-050)}
  .nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
  .nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
  .nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
  .page-hero{padding:70px 0 58px}
  .page-hero::before{width:100%;opacity:.1;-webkit-mask-image:none;mask-image:none}
  .page-hero h1,.page-hero p{max-width:none}
  .grid-2,.project-card,.contact-grid{grid-template-columns:1fr}
}
@media (max-width:620px){
  .wrap{padding:0 24px}
  .menu{left:24px;right:24px}
  .sec{padding:64px 0}
  .grid-3,.grid-4,.stat-strip{grid-template-columns:1fr}
  .type-photo{height:210px}
  .stat{border-right:0;border-bottom:1px solid rgba(255,255,255,.14)}
  .stat:last-child{border-bottom:0}
  .form-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .foot-reg{gap:10px}
  .reg-sep{display:none}
  .foot-reg .reg-item{width:100%}
  .foot-bot{gap:10px}
  .bot-links{flex-direction:column;align-items:flex-start;gap:6px}
}