/* ============================================================
   龙铭特种作业 · 资讯列表页 news.css
   对角签名：S20 · 108° 渐变分割 + 引出线标注装饰
   ============================================================ */

/* ---------- 首屏（108° 对角渐变，内容居右） ---------- */
.hero{
  position:relative;min-height:520px;display:flex;align-items:center;overflow:hidden;
  background:var(--ink);padding:130px 0 70px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(108deg,rgba(244,244,240,.06) 0%,rgba(244,244,240,.04) 38%,rgba(11,11,12,0) 62%);
  z-index:0;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    linear-gradient(108deg,transparent 0 30%,rgba(255,255,255,.28) 30% 30.4%,transparent 30.4% 100%);
  opacity:.25;
}
.hero-lead-ic{
  position:absolute;right:6%;top:50%;transform:translateY(-50%);width:120px;height:120px;
  border:1px solid var(--line);border-radius:50%;display:flex;align-items:center;justify-content:center;
  color:rgba(255,255,255,.28);z-index:1;
}
.hero-lead-ic::before{
  content:"";position:absolute;left:-46px;top:50%;width:46px;height:1px;background:rgba(255,255,255,.28);
}
.hero-lead-ic svg{width:52px;height:52px}
.hero-inner{position:relative;z-index:2;width:min(1200px,92%);margin-inline:auto}
.crumbs{margin-bottom:22px}
.hero-title{font-size:clamp(34px,5vw,58px);font-weight:900;line-height:1.2;margin-bottom:18px}
.hero-title b{color:#fff;position:relative}
.hero-title b::after{
  content:"";position:absolute;left:0;right:0;bottom:4px;height:10px;background:rgba(255,255,255,.18);z-index:-1;
}
.hero-sub{max-width:560px;font-size:16.5px;color:var(--muted-dark);margin-bottom:30px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 资讯分类入口（浅底） ---------- */
.cat-sec{background:var(--paper);color:var(--txt-on-light);padding-bottom:70px}
.cat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.cat-chip{
  display:flex;flex-direction:column;gap:6px;padding:26px 24px;border-radius:10px;
  background:#fff;border:1px solid var(--line-dark);position:relative;overflow:hidden;
  transition:.4s var(--ease);
}
.cat-chip::after{
  content:"";position:absolute;right:-18px;bottom:-18px;width:70px;height:70px;border-radius:50%;
  border:10px solid rgba(11,11,12,.05);transition:.4s var(--ease);
}
.cat-chip:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(11,11,12,.12);border-color:rgba(11,11,12,.3)}
.cat-chip:hover::after{transform:scale(1.5)}
.cc-no{font-size:12px;font-weight:800;letter-spacing:.2em;color:#9a9a94}
.cc-name{font-size:18px;font-weight:800;color:#17171a}
.cc-desc{font-size:13px;color:#5c5c58}
.cat-note{
  margin-top:22px;padding:20px 26px;font-size:14.5px;line-height:1.95;color:#4a4a44;
  background:linear-gradient(130deg,#eef0ea,#e4e7dd);border-left:3px solid #17171a;border-radius:0 10px 10px 0;
}

/* ---------- 文章列表（深底） ---------- */
.list-sec{background:var(--ink)}
.news-wrap{display:grid;grid-template-columns:1fr 320px;gap:32px;align-items:start}
.art-list{display:flex;flex-direction:column;gap:20px}
.art-item{
  display:flex;gap:22px;background:var(--ink-2);border:1px solid var(--line);border-radius:12px;
  padding:18px;transition:.4s var(--ease);
}
.art-item:hover{border-color:rgba(255,255,255,.35);transform:translateX(8px)}
.art-thumb{flex:none;width:280px;height:168px;overflow:hidden;border-radius:8px;background:#26262a}
.art-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.art-item:hover .art-thumb img{transform:scale(1.06)}
.art-body{display:flex;flex-direction:column;min-width:0;justify-content:center;gap:10px}
.art-title{font-size:19px;font-weight:800;line-height:1.45}
.art-title a:hover{text-decoration:underline;text-underline-offset:4px}
.art-desc{font-size:14px;color:var(--muted-dark);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.art-meta{display:flex;align-items:center;justify-content:space-between;margin-top:4px}
.art-time{font-size:13px;color:#777;letter-spacing:.04em}
.art-more{font-size:14px;font-weight:700;color:#fff;border-bottom:1px solid rgba(255,255,255,.5);padding-bottom:2px;transition:.25s}
.art-more:hover{border-color:#fff}
.news-aside{display:flex;flex-direction:column;gap:18px;position:sticky;top:calc(var(--header-h) + 24px)}
.na-box{background:var(--ink-2);border:1px solid var(--line);border-radius:10px;padding:22px}
.na-box h3{font-size:15px;font-weight:800;margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--line)}
.na-box a{display:block;font-size:14px;color:var(--muted-dark);padding:8px 0;border-bottom:1px dashed rgba(255,255,255,.06);transition:.25s}
.na-box a:hover{color:#fff;padding-left:8px}
.na-tel{
  display:block;text-align:center;padding:22px;border-radius:10px;font-size:14px;color:var(--muted-dark);
  background:linear-gradient(108deg,#1c1c1f,#0e0e0f);border:1px solid var(--line);transition:.35s var(--ease);
}
.na-tel b{display:block;font-size:22px;color:#fff;margin-top:6px;letter-spacing:.04em}
.na-tel:hover{border-color:#fff}
.na-how p{font-size:13.5px;color:var(--muted-dark);line-height:1.85;margin:0}
.list-tip{
  margin:0 0 26px;padding:16px 22px;font-size:14px;line-height:1.9;color:var(--muted-dark);
  background:var(--ink-2);border:1px solid var(--line);border-left:3px solid rgba(255,255,255,.5);border-radius:8px;
}

/* ---------- 专题推荐（浅底） ---------- */
.topic-sec{background:var(--paper);color:var(--txt-on-light)}
.topic-sec .sec-title b{color:#000}
.topic-sec .sec-more{color:var(--muted-light);border-color:var(--line-dark)}
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.topic-card{
  display:flex;flex-direction:column;gap:10px;padding:30px 26px;border-radius:12px;background:#fff;
  border:1px solid var(--line-dark);transition:.4s var(--ease);position:relative;overflow:hidden;
}
.topic-card::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:#0b0b0c;
  transform:scaleY(0);transform-origin:bottom;transition:.4s var(--ease);
}
.topic-card:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(11,11,12,.1)}
.topic-card:hover::before{transform:scaleY(1)}
.tc-ic{width:46px;height:46px;display:flex;align-items:center;justify-content:center;border-radius:8px;
  background:var(--paper-2);color:#17171a;margin-bottom:6px}
.tc-name{font-size:17px;font-weight:800}
.tc-desc{font-size:13.5px;color:#5c5c58;line-height:1.75}
.topic-more{margin-top:24px;font-size:13.5px;color:#6a6a64;line-height:1.85;text-align:center}

/* ---------- 资讯使用问答（深底） ---------- */
.nfaq-sec{background:var(--ink)}
.nfaq-list{display:flex;flex-direction:column;gap:12px;max-width:860px}
.nfaq-item{
  background:var(--ink-2);border:1px solid var(--line);border-radius:10px;overflow:hidden;transition:.35s var(--ease);
}
.nfaq-item[open]{border-color:rgba(255,255,255,.35)}
.nfaq-item summary{
  list-style:none;cursor:pointer;padding:20px 26px;font-size:16px;font-weight:700;color:#fff;
  display:flex;justify-content:space-between;align-items:center;gap:16px;
}
.nfaq-item summary::-webkit-details-marker{display:none}
.nfaq-item summary::after{
  content:"+";font-size:22px;font-weight:400;color:var(--muted-dark);transition:.3s var(--ease);flex:none;
}
.nfaq-item[open] summary::after{content:"–"}
.nf-body{padding:0 26px 22px}
.nf-body p{font-size:14.5px;color:var(--muted-dark);line-height:1.9}
.nf-body a{color:#fff;text-decoration:underline;text-underline-offset:3px}

/* ---------- 资讯导读（深底浅底过渡区） ---------- */
.guide-sec{background:linear-gradient(180deg,var(--paper) 0 60%,var(--ink) 60% 100%);color:var(--txt-on-light)}
.guide-grid{display:grid;grid-template-columns:1fr 300px;gap:28px;align-items:stretch}
.guide-text{background:#fff;border:1px solid var(--line-dark);border-radius:16px;padding:42px 44px;position:relative;overflow:hidden}
.guide-text::after{
  content:"";position:absolute;right:-60px;bottom:-60px;width:200px;height:200px;border-radius:50%;
  border:22px solid rgba(11,11,12,.04);
}
.guide-text p{font-size:15px;line-height:2;color:#3c3c3a;margin-bottom:14px}
.guide-text p:last-child{margin-bottom:0}
.guide-text strong{color:#000;font-weight:800}
.guide-text a{color:#000;text-decoration:underline;text-underline-offset:3px}
.guide-note{
  background:var(--ink-2);border:1px solid var(--line);border-radius:16px;padding:34px 30px;
  display:flex;flex-direction:column;gap:12px;color:var(--muted-dark);
}
.gn-ic{width:52px;height:52px;border-radius:10px;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,.06);color:#fff;margin-bottom:6px}
.gn-ic svg{width:26px;height:26px}
.guide-note h3{font-size:19px;font-weight:800;color:#fff}
.guide-note p{font-size:14px;line-height:1.9}
.guide-note a{color:#fff;text-decoration:underline;text-underline-offset:3px}
.guide-note .btn{margin-top:8px}

/* ---------- 底部 CTA ---------- */
.cta-sec{background:var(--ink)}
.cta-strip{
  background:var(--paper);color:var(--txt-on-light);border-radius:18px;padding:54px 60px;
  display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;position:relative;overflow:hidden;
}
.cta-strip::before{
  content:"";position:absolute;left:-40px;bottom:-40px;width:180px;height:180px;border-radius:50%;
  border:1px solid rgba(11,11,12,.12);
}
.cta-strip h2{font-size:clamp(22px,2.8vw,32px);font-weight:900;margin-bottom:8px}
.cta-strip p{color:#5c5c58;font-size:14.5px}
.cta-btns{display:flex;gap:14px;position:relative;z-index:1}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .news-wrap{grid-template-columns:1fr}
  .cat-row{grid-template-columns:1fr 1fr}
  .topic-grid{grid-template-columns:1fr 1fr}
  .guide-grid{grid-template-columns:1fr}
  .hero-lead-ic{display:none}
}
@media (max-width:760px){
  .art-item{flex-direction:column}
  .art-thumb{width:100%;height:190px}
  .cat-row{grid-template-columns:1fr}
  .topic-grid{grid-template-columns:1fr}
  .guide-text{padding:30px 24px}
  .cta-strip{padding:38px 28px}
}