/* shiyou-tianranqi.html — 石油天然气 · S7 大编号分区 · D2 对角光斑 + D5 斜贴标签 */

.sy-hero{
  padding:calc(var(--header-h) + 70px) 0 90px;
  background:linear-gradient(155deg,#F4F2EC 0%,#E7E2D7 100%);
}
.sy-hero-in{max-width:800px;}
.sy-hero h1{font-size:42px;line-height:1.28;margin:22px 0 18px;}
.sy-lede{font-size:16px;color:var(--text-weak);max-width:720px;}

/* S7 大编号 */
.sy-item{
  display:grid;grid-template-columns:180px 1fr;gap:30px;align-items:start;
  padding:34px 0;border-bottom:1px solid var(--line);
}
.sy-item:last-child{border-bottom:0;}
.sy-num{
  font-size:72px;font-weight:800;line-height:.9;
  color:transparent;-webkit-text-stroke:1.5px var(--brown-200);
  font-style:italic;letter-spacing:2px;
}
.sy-rot{transform:rotate(-2deg);}
.sy-item-bd h2{font-size:26px;margin:14px 0 12px;line-height:1.35;}
.sy-item-bd p{font-size:15px;color:var(--text);max-width:760px;}

.sy-bottom{display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:center;}
.sy-fig img{width:100%;height:auto;box-shadow:var(--shadow-b);}
.sy-bottom-txt h2{font-size:26px;margin:0 0 14px;}
.sy-bottom-txt p{font-size:15px;}

@media (max-width:920px){
  .sy-hero h1{font-size:30px;}
  .sy-item{grid-template-columns:1fr;gap:10px;}
  .sy-num{font-size:48px;}
  .sy-bottom{grid-template-columns:1fr;gap:28px;}
}