/* ============================================================
   zhengshu-hegui.css —— 证书合规使用
   技法:撕纸锯齿 hero + 墨黑印章红线四卡 + 两栏踩坑清单 +
   图文风险区 + 勾选自查清单 + 折叠 FAQ
   ============================================================ */

/* ---------- Hero:撕纸锯齿底缘 ---------- */
.hg-hero{
  margin-top:var(--nav-h);
  background:
    linear-gradient(100deg, rgba(28,26,23,.85), rgba(74,55,40,.7)),
    url("../images/banner-toubiao.jpg") center/cover no-repeat;
  color:var(--cream);
  padding:86px 0 130px;
  /* 锯齿撕纸底缘 */
  clip-path:polygon(0 0,100% 0,100% 88%,94% 94%,88% 88%,82% 95%,74% 89%,66% 95%,58% 88%,50% 95%,42% 89%,34% 95%,26% 88%,18% 95%,10% 89%,4% 94%,0 90%);
}
.hg-hero-in{ max-width:820px; }
.hg-hero .crumb{ color:rgba(242,232,213,.72); margin-bottom:18px; }
.hg-hero .crumb a{ color:rgba(242,232,213,.85); }
.hg-keycap{ background:rgba(242,232,213,.12); border-color:var(--tan); color:var(--cream); margin-bottom:20px; }
.hg-hero h1{ color:var(--cream); font-size:38px; line-height:1.3; margin-bottom:20px; }
.hg-sub{ font-size:16.5px; line-height:1.9; color:rgba(242,232,213,.88); max-width:740px; }
.hg-cta{ margin-top:30px; display:flex; flex-wrap:wrap; gap:14px; }
.hg-ghost{ border-color:var(--tan); color:var(--cream); }
.hg-ghost:hover{ background:rgba(242,232,213,.1); color:var(--cream); border-color:var(--cream); }

/* ---------- 板块 2:墨黑红线 ---------- */
.hg-line{ background:var(--ink); color:var(--cream); padding:90px 0 80px; }
.hg-num-light{ font-family:var(--font-mono); letter-spacing:3px; color:var(--tan); font-size:13px; }
.hg-light-h{ color:var(--cream); font-size:30px; margin:8px 0 34px; }
.hg-line-row{ display:grid; grid-template-columns:repeat(4,1fr); gap:20px; }
.hg-line-i{ background:var(--ink-2); border:1px solid #3A342C; border-radius:14px; padding:24px 20px; }
.hg-stamp{
  display:inline-flex; align-items:center; justify-content:center;
  width:64px; height:64px; border-radius:50%; margin-bottom:16px;
  border:2px solid var(--tan); color:var(--tan);
  font-family:var(--font-mono); font-size:13px; letter-spacing:1px;
}
.hg-line-i h3{ color:var(--cream); font-size:18px; margin-bottom:10px; }
.hg-line-i p{ color:rgba(242,232,213,.76); font-size:13.5px; }
.hg-inlink{ color:var(--tan); text-decoration:underline; text-underline-offset:3px; }

/* ---------- 板块 3:踩坑清单 ---------- */
.hg-wrong{ padding:80px 0; background:var(--paper); }
.hg-wrong-grid{ display:grid; grid-template-columns:1fr 1.2fr; gap:48px; }
.hg-secno{ font-family:var(--font-mono); letter-spacing:2px; color:var(--brown-3); font-size:13px; margin-bottom:10px; }
.hg-wrong-txt h2{ font-size:28px; margin-bottom:16px; }
.hg-wrong-txt p{ color:var(--ink-2); }
.hg-wrong-i{
  padding:16px 18px; margin-bottom:12px; background:var(--paper-2);
  border-left:4px solid var(--brown-3); border-radius:0 10px 10px 0; font-size:14.5px; color:var(--ink-2);
}
.hg-wrong-i b{ color:var(--ink); font-family:var(--font-head); }

/* ---------- 板块 4:风险后果 ---------- */
.hg-risk{ padding:70px 0; background:var(--paper-2); }
.hg-risk-grid{ display:grid; grid-template-columns:1fr 1.1fr; gap:48px; align-items:center; }
.hg-risk-img img{ border-radius:16px; box-shadow:var(--shadow); clip-path:polygon(0 0,100% 0,96% 100%,0 94%); }
.hg-risk-txt h2{ font-size:26px; margin:8px 0 16px; }
.hg-risk-txt p{ margin-bottom:14px; color:var(--ink-2); }
.hg-risk-note{ font-size:12.5px; color:var(--brown-3); border-top:1px dashed var(--line-2); padding-top:12px; }

/* ---------- 板块 5:自查清单 ---------- */
.hg-check{ padding:80px 0; background:var(--paper); }
.hg-check h2{ font-size:28px; margin-bottom:12px; }
.hg-check-lead{ max-width:720px; margin-bottom:26px; color:var(--ink-2); }
.hg-check-list{ max-width:820px; }
.hg-check-list li{
  position:relative; padding:13px 0 13px 40px; border-bottom:1px dashed var(--line);
  font-size:15px; color:var(--ink-2);
}
.hg-check-list li::before{
  content:""; position:absolute; left:6px; top:16px; width:18px; height:18px;
  border:2px solid var(--brown-3); border-radius:5px; background:var(--paper-2);
}
.hg-check-list li::after{
  content:""; position:absolute; left:11px; top:18px; width:10px; height:6px;
  border-left:2px solid var(--brown); border-bottom:2px solid var(--brown); transform:rotate(-45deg);
}
.hg-check-list a{ color:var(--brown-2); text-decoration:underline; text-underline-offset:3px; }

/* ---------- 板块 6:FAQ ---------- */
.hg-faq{ padding:80px 0; background:var(--paper-3); }
.hg-faq h2{ font-size:28px; margin-bottom:26px; }
.hg-faq-list{ max-width:860px; }
.hg-faq-i{ border:1px solid var(--line-2); border-radius:12px; margin-bottom:12px; background:var(--paper); overflow:hidden; }
.hg-faq-i summary{ cursor:pointer; padding:16px 20px; font-weight:700; color:var(--ink); font-family:var(--font-head); list-style:none; position:relative; padding-right:40px; }
.hg-faq-i summary::-webkit-details-marker{ display:none; }
.hg-faq-i summary::after{ content:"+"; position:absolute; right:18px; top:50%; transform:translateY(-50%); font-family:var(--font-mono); font-size:20px; color:var(--brown-3); }
.hg-faq-i[open] summary::after{ content:"–"; }
.hg-faq-i p{ padding:0 20px 18px; color:var(--ink-2); font-size:14.5px; }
.hg-faq-i a{ color:var(--brown-2); text-decoration:underline; text-underline-offset:3px; }

/* ---------- 板块 7:CTA ---------- */
.hg-cta{ background:var(--ink); color:var(--cream); text-align:center; padding:80px 0; }
.hg-cta h2{ color:var(--cream); font-size:29px; margin-bottom:14px; }
.hg-cta p{ color:rgba(242,232,213,.82); max-width:620px; margin:0 auto 26px; }
.hg-cta-row{ display:flex; justify-content:center; flex-wrap:wrap; gap:14px; }
.hg-cta-links{ margin-top:24px; font-size:13.5px; color:rgba(242,232,213,.7); }
.hg-cta-links a{ color:var(--tan); }

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .hg-hero{ clip-path:none; padding:70px 0 60px; }
  .hg-hero h1{ font-size:29px; }
  .hg-line-row{ grid-template-columns:1fr 1fr; }
  .hg-wrong-grid,.hg-risk-grid{ grid-template-columns:1fr; gap:28px; }
}
@media (max-width:640px){
  .hg-hero h1{ font-size:24px; }
  .hg-line-row{ grid-template-columns:1fr; }
  .hg-wrong-txt h2,.hg-check h2,.hg-faq h2,.hg-light-h{ font-size:22px; }
}

/* 从哪下手 */
.hg-start{padding:60px 0;background:var(--paper);}
.hg-start h2{font-size:26px;margin-bottom:14px;}
.hg-start>div>p{margin-bottom:14px;color:var(--ink-2);}
.hg-start a{color:var(--brown-2);text-decoration:underline;}

/* 情景问答 */
.hg-case{padding:60px 0;background:var(--paper-2);}
.hg-case h2{font-size:26px;margin-bottom:16px;}
.hg-case>div>p{margin-bottom:14px;color:var(--ink-2);}
.hg-case b{color:var(--brown-2);}

.hg-pri{padding:60px 0;background:var(--paper);}
.hg-pri h2{font-size:26px;margin-bottom:16px;}
.hg-pri>div>p{margin-bottom:14px;color:var(--ink-2);}

.hg-ben{padding:60px 0;background:var(--paper-2);}
.hg-ben h2{font-size:26px;margin-bottom:16px;}
.hg-ben>div>p{margin-bottom:14px;color:var(--ink-2);}

.hg-pin{padding:60px 0;background:var(--paper);}
.hg-pin h2{font-size:26px;margin-bottom:16px;}
.hg-pin>div>p{margin-bottom:14px;color:var(--ink-2);}