:root{
  --bg:#f2f2f2;
  --card:#ffffff;
  --text:#1e1e1e;
  --muted:#5b5b5b;
  --line:rgba(0,0,0,.12);
  --brand:#2b2b2b;
  --shadow:0 12px 30px rgba(0,0,0,.10);
  --radius:18px;
  --max:1160px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  color:var(--text);
  background:linear-gradient(180deg,#fafafa 0%, var(--bg) 60%, #ededed 100%);
  font-family: system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  line-height:1.6;
}

a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

.container{max-width:var(--max);margin:0 auto;padding:0 18px}

/* 顶部导航（轻量、无动效） */
.topbar{
  position:sticky;top:0;z-index:20;
  backdrop-filter:saturate(140%) blur(10px);
  background:rgba(255,255,255,.78);
  border-bottom:1px solid var(--line);
}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;padding:12px 0;gap:14px}
.brand{display:flex;align-items:center;gap:12px;min-width:220px}
.brand img{width:190px;height:auto}
.nav{display:flex;gap:18px;flex-wrap:wrap;justify-content:flex-end}
.nav a{
  padding:10px 10px;
  border-radius:999px;
  font-weight:650;
  color:#222;
}
.nav a:hover{background:rgba(0,0,0,.06)}
.lang{border:1px solid var(--line);border-radius:999px;padding:8px 12px;color:var(--muted);font-weight:600}

/* 首屏 */
.hero{
  padding:34px 0 18px;
}
.hero__grid{
  display:grid;
  grid-template-columns: 1.15fr .85fr;
  gap:18px;
  align-items:stretch;
}
.hero__card{
  border-radius:calc(var(--radius) + 6px);
  overflow:hidden;
  box-shadow:var(--shadow);
  background:var(--card);
  border:1px solid rgba(0,0,0,.06);
}
.hero__image{
  min-height:420px;
  background:
    linear-gradient(120deg, rgba(0,0,0,.40), rgba(0,0,0,.10)),
    url("assets/img/ABUIABACGAAgjd7ezQYo6rjG9QMwgA84qAU.jpg") center/cover no-repeat;
}
.hero__content{
  padding:26px 22px 22px;
}
.kicker{
  display:inline-flex;gap:10px;align-items:center;
  padding:6px 12px;border-radius:999px;
  background:rgba(43,43,43,.08);
  color:#2b2b2b;
  font-weight:700;
  letter-spacing:.02em;
}
.hero h1{
  margin:14px 0 10px;
  font-size: clamp(24px, 2.8vw, 40px);
  line-height:1.15;
  letter-spacing:-.02em;
}
.hero p{margin:0;color:rgba(0,0,0,.72)}
.ctaRow{display:flex;gap:12px;flex-wrap:wrap;margin-top:16px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:11px 14px;border-radius:12px;
  border:1px solid rgba(0,0,0,.12);
  background:#fff;font-weight:750;
}
.btn--primary{
  background:var(--brand);color:#fff;border-color:transparent;
}
.btn--primary:hover{filter:brightness(.95)}
.btn:hover{background:rgba(255,255,255,.92)}

.hero__side{
  display:flex;flex-direction:column;gap:14px;
}
.sideCard{
  border-radius:var(--radius);
  background:var(--card);
  border:1px solid rgba(0,0,0,.06);
  box-shadow:0 10px 24px rgba(0,0,0,.08);
  overflow:hidden;
}
.sideCard__img{height:148px;background: url("assets/img/ABUIABACGAAg86L7xAYo1L_LjQEwgA84qAU.jpg") center/cover no-repeat}
.sideCard__body{padding:14px 14px 12px}
.sideCard__title{margin:0 0 6px;font-weight:900}
.sideCard__desc{margin:0;color:rgba(0,0,0,.68);font-size:14px}

/* 通用区块 */
.section{padding:26px 0}
.section h2{
  margin:0 0 12px;
  font-size:22px;
  letter-spacing:-.01em;
}
.sub{color:rgba(0,0,0,.66);margin:0 0 16px}

.grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:14px;
}
.card{
  border-radius:var(--radius);
  background:var(--card);
  border:1px solid rgba(0,0,0,.06);
  box-shadow:0 10px 24px rgba(0,0,0,.06);
  overflow:hidden;
}
.card__img{height:170px;background-size:cover;background-position:center}
.card__body{padding:14px 14px 14px}
.card__body h3{margin:0 0 6px;font-size:16px}
.card__body p{margin:0;color:rgba(0,0,0,.68);font-size:14px}

.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  background:rgba(43,43,43,.07);
  border:1px solid rgba(0,0,0,.10);
  color:#222;
  padding:8px 10px;
  border-radius:999px;
  font-weight:650;
  font-size:13px;
}

.banner{
  border-radius:calc(var(--radius) + 6px);
  overflow:hidden;
  border:1px solid rgba(0,0,0,.06);
  background:
    linear-gradient(140deg, rgba(0,0,0,.44), rgba(0,0,0,.06)),
    url("assets/img/AI4BCMDngxAQAhgAIKuP3sYGKLaHkrUBMIAPOLgI.jpg") center/cover no-repeat;
  box-shadow:var(--shadow);
}
.banner__inner{padding:22px 18px;color:#fff}
.banner__inner strong{font-size:18px}
.banner__inner p{margin:8px 0 0;color:rgba(255,255,255,.86)}

/* 页脚 */
footer{padding:22px 0 40px;color:rgba(0,0,0,.65)}
.footerBox{
  border-top:1px solid var(--line);
  padding-top:16px;
  display:flex;gap:16px;flex-wrap:wrap;justify-content:space-between;align-items:flex-start;
}
.meta{font-size:13px}
.addr{white-space:pre-line}

/* 响应式 */
@media (max-width: 960px){
  .hero__grid{grid-template-columns:1fr}
  .hero__image{min-height:320px}
  .grid{grid-template-columns:1fr}
  .brand{min-width:0}
  .brand img{width:160px}
  .nav{gap:8px}
}