:root{
  --bg:#ffffff; --ink:#111; --muted:#5b5f66; --line:#e8e9ee; --accent:#d21c1c;
  --container:1120px; --gap:24px; --radius:14px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);
  font-family:Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial;}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}

/* Header */
.header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:68px}
.brand .logo{height:26px}
.nav{display:flex;gap:22px;align-items:center}
.nav a{font-size:14px;color:#222;opacity:.9}
.nav a:hover{opacity:1}
.lang{border:1px solid var(--line);padding:8px 10px;border-radius:10px;background:#fff}
.menu-btn{display:none}
@media(max-width:960px){.nav{display:none}.menu-btn{display:inline-flex}}

/* Typography */
h1{font-size:42px;line-height:1.18;margin:0 0 14px;font-weight:800}
h2{font-size:28px;line-height:1.24;margin:0 0 12px;font-weight:800}
h3{font-size:18px;margin:0 0 8px;font-weight:700}
p{font-size:16px;line-height:1.7;margin:0 0 12px}
.muted{color:var(--muted)}

/* Sections */
.section{padding:86px 0;border-bottom:1px solid var(--line)}
.section:last-child{border-bottom:0}

/* Hero */
.hero{padding:64px 0 42px}
.hero .lead{font-size:18px;color:#2a2d33;max-width:760px}

/* Hero kicker（主营业务） */
.hero .kicker {
  color:#111!important;
  letter-spacing:2px;
  font-size: clamp(10px, 3vw, 20px); /* 字体大小随屏幕缩放 */
  font-weight:700;
  line-height:1.4;		
  margin-bottom:18px; /* 与下面标语留间距 */
}

/* Grid utilities */
.grid{display:grid;gap:var(--gap)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:960px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}

/* Cards / tiles */
.card{border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden}
.card .thumb{aspect-ratio:16/9;background:#f2f3f7}
.card .thumb img{width:100%;height:100%;object-fit:cover}
.card .body{padding:16px}

/* CTA buttons */
.btn{display:inline-flex;align-items:center;gap:10px;height:42px;padding:0 16px;border-radius:10px;border:1px solid #222;font-weight:600}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.ghost{background:#fff;color:#111}

/* Footer */
.footer{padding:36px 0;color:#6b7077}
hr.sep{border:none;border-top:1px solid var(--line);margin:24px 0}

/* Table-like list */
.list{display:grid;gap:8px}
.list .row{display:grid;grid-template-columns:180px 1fr;gap:14px;padding:12px 0;border-bottom:1px solid var(--line)}
.list .row:last-child{border-bottom:0}
@media(max-width:720px){.list .row{grid-template-columns:1fr}}


/* ===== Subtle animations ===== */
:root{ --eas: cubic-bezier(.22,.61,.36,1); }

/* Scroll reveal */
.reveal{opacity:0;transform:translateY(10px);transition:opacity .6s var(--eas), transform .6s var(--eas)}
.reveal.on{opacity:1;transform:none}

/* Card hover micro-interactions */
.card{transition: transform .25s var(--eas), box-shadow .25s var(--eas), border-color .25s var(--eas)}
.card:hover{transform:translateY(-3px);box-shadow:0 18px 40px rgba(0,0,0,.08)}
.card .thumb{overflow:hidden}
.card .thumb img{transition: transform .6s var(--eas)}
.card:hover .thumb img{transform:scale(1.03)}

/* Link underline slide */
.nav a{position:relative}
.nav a::after{content:"";position:absolute;left:0;right:100%;bottom:-6px;height:2px;background:#111;transition:right .3s var(--eas)}
.nav a:hover::after{right:0}

/* Sticky header shadow after scroll */
.header.scrolled{box-shadow:0 6px 20px rgba(0,0,0,.06)}

/* Reduce motion support */
@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .card .thumb img{transition:none}
  .nav a::after{transition:none}
}


/* ===== Ogilvy-style Work module on Home ===== */
.ogi-container{max-width:1200px;margin:0 auto;padding:0 24px}
#ogi-work.ogi-field{background:#cf4a43;width:100vw;margin-left:calc(50% - 50vw)}
.ogi-wrap{position:relative;max-width:1440px;margin:0 auto;padding:64px 24px 0}
.ogi-center{position:sticky;top:20vh;z-index:5;font-family:Georgia, "Times New Roman", serif;font-weight:700;
  color:#fff;letter-spacing:.5px;font-size:clamp(64px, 12vw, 180px);line-height:1;text-align:center;pointer-events:none;
  transform-origin:center;transition:opacity .2s linear, transform .2s linear}
.ogi-grid{display:grid;justify-items:center;align-items:start;grid-template-columns:repeat(7, minmax(120px,1fr));
  gap:36px 42px;padding:40px 0 120px}
.ogi-item{width:220px;height:140px;border-radius:16px;overflow:hidden;box-shadow:0 12px 30px rgba(0,0,0,.12);background:#c93f39}
.ogi-item img{width:100%;height:100%;object-fit:cover;display:block;transition: transform .6s cubic-bezier(.22,.61,.36,1)}
.ogi-item:hover img{transform:scale(1.03)}
.ogi-fade{position:sticky;top:70vh;height:40vh;margin-top:-40vh;z-index:6;pointer-events:none;
  background:linear-gradient(to bottom, rgba(207,74,67,0) 0%, rgba(207,74,67,.88) 60%, rgba(207,74,67,1) 100%)}
.ogi-intro{background:#fff;color:#111}
.ogi-intro .ogi-container{padding:10vh 24px 12vh}
.ogi-intro h2{font:700 clamp(28px,3.2vw,40px)/1.25 Georgia, "Times New Roman", serif}

@media (max-width:1400px){ .ogi-grid{grid-template-columns:repeat(6, minmax(120px,1fr))}}
@media (max-width:1100px){ .ogi-grid{grid-template-columns:repeat(4, minmax(120px,1fr))} .ogi-item{width:200px;height:128px}}
@media (max-width:760px){ .ogi-grid{grid-template-columns:repeat(2, minmax(120px,1fr)); gap:26px}
  .ogi-item{width:46vw;height:28vw} .ogi-center{top:18vh}}

/* === Home above-the-fold hardening: force identical look online/offline === */
:root{ --red:#cf4a43; }

.header{ background:var(--red)!important; border-bottom:none!important; box-shadow:none!important; }
.header .nav a{ color:#fff; }

.section.hero.hero-red{ background:var(--red)!important; }
.hero-red{
  color:#111;
  width:100vw; margin-left:calc(50% - 50vw);
  padding-top:56px; padding-bottom:0;
  margin-bottom:-1px;
}
.hero .lead{ color:#111!important; }
.hero .slogan{ color:#111!important; margin:.2em 0; opacity:1!important; transform:none!important; }
.hero .slogan .accent{ color:#fff!important; font-weight:800; }

#ogi-work.ogi-field{ background:var(--red)!important; margin-top:0; }
.ogi-wrap{ padding-top:0; }
#ogi-work .ogi-center{
  font-family:"Times New Roman", Georgia, "Baskerville", "Didot", "Palatino", serif;
  font-style:italic; font-weight:700; white-space:nowrap;
  font-size:clamp(26px,5.6vw,66px); letter-spacing:.5px; color:#fff; line-height:1.1;
  top:17vh;
}

/* 小抖动兜底：不同设备/缩放下保持更稳定 */
html{ -webkit-text-size-adjust:100%; }