*,*::before,*::after{box-sizing:border-box}
body{margin:0;font-family:"PingFang SC","Microsoft YaHei",sans-serif;color:#1c1c1c;background:#fff;line-height:1.75}
img{display:block;max-width:100%;height:auto}
a{color:#2563eb;text-decoration:none}
a:hover{text-decoration:underline}
.w{width:min(1120px,calc(100% - 36px));margin:0 auto}

.bar{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid #eaeaea}
.bar-in{display:flex;align-items:center;justify-content:space-between;min-height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:16px;color:#111}
.logo img{width:38px;border-radius:10px}
.nav{display:flex;gap:18px;align-items:center}
.nav a{color:#555;font-size:14px}
.ham{display:none;border:1px solid #ddd;background:#fff;border-radius:8px;padding:8px 12px}
.mnav{display:none;flex-direction:column;padding:12px 18px 18px;border-top:1px solid #eee}
.mnav.on{display:flex}
.mnav a{padding:10px 0;border-bottom:1px solid #f4f4f4;color:#444}

.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:14px;padding:40px 0}
.cell{border:1px solid #e8e8e8;border-radius:16px;padding:24px;background:#fff}
.cell h2,.cell h3{margin:0 0 10px;font-size:18px}
.cell p{margin:0;color:#555;font-size:14px}
.span6{grid-column:span 6}.span4{grid-column:span 4}.span8{grid-column:span 8}.span12{grid-column:span 12}
.hero-cell{background:linear-gradient(135deg,#f0f4ff,#fff);padding:32px}
.hero-cell h1{font-size:clamp(26px,3.5vw,38px);line-height:1.25;margin:0 0 14px}
.hero-cell .sub{color:#555;font-size:16px;margin-bottom:18px}
.img-cell{padding:0;overflow:hidden}
.img-cell img{width:100%;height:100%;object-fit:cover;min-height:200px}
.accent{background:#fef3f2;border-color:#fecaca}

.section{padding:56px 0;border-top:1px solid #f0f0f0}
.section h2{font-size:26px;margin:0 0 20px}
.cols2{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.cols3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.tile{border:1px solid #ececec;border-radius:12px;padding:20px}
.tile img{border-radius:10px;margin-bottom:12px;aspect-ratio:2/3;object-fit:cover;width:100%}

.prose{max-width:720px;margin:0 auto;padding:40px 0}
.prose h1{font-size:30px}
.ftr{padding:36px 0;background:#fafafa;border-top:1px solid #eee;font-size:13px;color:#888}
.ftr a{color:#666;margin-right:14px}
.err{min-height:60vh;display:grid;place-items:center;text-align:center}

@media(max-width:860px){
  .bento{grid-template-columns:1fr}
  .span6,.span4,.span8,.span12{grid-column:span 1}
  .cols2,.cols3{grid-template-columns:1fr}
  .ham{display:inline-flex}.nav{display:none}
}