:root{
  --primary:#43553f;
  --primary-deep:#33422f;
  --accent:#c6d93b;
  --bg:#f6f7f2;
  --bg-soft:#eceee4;
  --ink:#1e241c;
  --ink-soft:#55604f;
  --line:rgba(30,36,28,.14);
  --radius:14px;
  --wrap:1120px;
}

*,*::before,*::after{box-sizing:border-box;}

html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
}

img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,p,dl,dd,figure,blockquote{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}

.wrap{
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 24px;
}

.eyebrow{
  font-size:12px;
  letter-spacing:.28em;
  text-transform:uppercase;
  color:var(--primary);
  font-weight:600;
  margin-bottom:14px;
}

/* ---------- 页头 ---------- */
.site-head{
  position:sticky;
  top:0;
  z-index:40;
  background:rgba(246,247,242,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}

.head-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:76px;
}

.brand{display:flex;align-items:center;flex:0 0 auto;}
.brand-logo{display:block;height:46px;width:auto;}

.site-nav{
  display:flex;
  align-items:center;
  gap:26px;
  font-size:14.5px;
  color:var(--ink-soft);
}

.site-nav a{position:relative;padding:4px 0;transition:color .2s ease;}
.site-nav a:hover{color:var(--primary);}
.site-nav a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .25s ease;
}
.site-nav a:hover::after{transform:scaleX(1);}

.nav-cta{
  color:var(--bg);
  background:var(--primary);
  padding:9px 18px;
  border-radius:999px;
  font-weight:600;
  transition:background .2s ease;
}
.nav-cta::after{display:none;}
.nav-cta:hover{color:var(--bg);background:var(--primary-deep);}

.nav-toggle{
  display:none;
  border:1px solid var(--line);
  background:transparent;
  color:var(--primary);
  font:inherit;
  font-size:14px;
  padding:7px 14px;
  border-radius:999px;
  cursor:pointer;
}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:104px 0 84px;
  text-align:center;
  background:
    radial-gradient(circle at 50% -10%,rgba(198,217,59,.30),transparent 55%),
    var(--bg);
  overflow:hidden;
}

.hero::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:-140px;
  width:520px;
  height:520px;
  margin-left:-260px;
  border:1px solid rgba(67,85,63,.18);
  border-radius:50% 50% 0 0;
  pointer-events:none;
}

.hero-inner{position:relative;z-index:1;}

.hero h1{
  font-size:clamp(34px,5.6vw,64px);
  line-height:1.14;
  letter-spacing:-.01em;
  font-weight:700;
  color:var(--primary-deep);
  margin-bottom:24px;
}

.hero-lead{
  max-width:640px;
  margin:0 auto;
  font-size:17px;
  color:var(--ink-soft);
}

.hero-actions{
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:14px;
  margin-top:34px;
}

.btn{
  display:inline-block;
  padding:13px 30px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  transition:transform .18s ease,background .18s ease,color .18s ease;
}
.btn:hover{transform:translateY(-1px);}
.btn-solid{background:var(--primary);color:var(--bg);}
.btn-solid:hover{background:var(--primary-deep);}
.btn-ghost{border-color:var(--primary);color:var(--primary);}
.btn-ghost:hover{background:var(--primary);color:var(--bg);}

.hero-facts{
  display:flex;
  justify-content:center;
  gap:56px;
  margin-top:56px;
  padding-top:28px;
  border-top:1px solid var(--line);
}
.hero-facts dt{
  font-size:12px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--ink-soft);
}
.hero-facts dd{
  margin-top:4px;
  font-size:22px;
  font-weight:700;
  color:var(--primary);
}

/* ---------- 三栏卖点 ---------- */
.pillars{
  background:var(--primary);
  color:#eef1e2;
  padding:64px 0;
}

.pillar-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:36px;
}

.pillar{
  padding:26px 24px;
  border:1px solid rgba(238,241,226,.18);
  border-radius:var(--radius);
  background:rgba(255,255,255,.04);
}

.pillar h2{
  font-size:19px;
  margin:10px 0 8px;
  color:#fff;
}

.pillar p{font-size:14.5px;color:rgba(238,241,226,.82);}

.dot{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;
  height:34px;
  border-radius:50%;
  background:var(--accent);
  color:var(--primary-deep);
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.04em;
}

/* ---------- 页脚 ---------- */
.site-foot{
  background:var(--primary-deep);
  color:rgba(238,241,226,.78);
  padding:34px 0;
  font-size:13.5px;
}

.foot-inner{
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
}

/* ---------- 响应式 ---------- */
@media (max-width:900px){
  .pillar-grid{grid-template-columns:1fr;gap:20px;}
  .hero{padding:80px 0 64px;}
}

@media (max-width:768px){
  .nav-toggle{display:inline-block;}
  .site-nav{
    display:none;
    position:absolute;
    top:100%;
    left:0;
    right:0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:8px 24px 20px;
    background:var(--bg);
    border-bottom:1px solid var(--line);
  }
  .site-nav.is-open{display:flex;}
  .site-nav a{padding:12px 0;border-bottom:1px solid var(--line);}
  .nav-cta{text-align:center;margin-top:12px;border-bottom:none;}
  .brand-logo{height:38px;}
  .head-inner{min-height:66px;}
  .hero-facts{gap:28px;flex-wrap:wrap;}
  .hero-facts dd{font-size:19px;}
  .foot-inner{flex-direction:column;align-items:flex-start;}
}