/* ============================================================
   toubiao-yongtu.css —— 证书投标用途(核心页)
   技法:斜切 hero(右低左高柔化底缘) + 左右咬合图文 +
   墨黑深色三键卡 + 对照表 + 竖排侧边标签 + 错位案例 + 折叠 FAQ
   ============================================================ */

/* ---------- 板块 1:Hero ---------- */
.ty-hero{
  margin-top:var(--nav-h);
  position:relative;
  background:
    linear-gradient(100deg, rgba(28,26,23,.82) 0%, rgba(28,26,23,.62) 48%, rgba(74,55,40,.42) 100%),
    url("../images/banner-toubiao.jpg") center/cover no-repeat;
  color:var(--cream);
  /* 斜切柔化底缘:右下角切进一个大弧 */
  clip-path:polygon(0 0,100% 0,100% 86%,64% 100%,0 92%);
  padding:86px 0 120px;
}
.ty-hero-in{ max-width:820px; }
.ty-hero .crumb{ color:rgba(242,232,213,.7); margin-bottom:18px; }
.ty-hero .crumb a{ color:rgba(242,232,213,.82); }
.ty-keycap{
  background:rgba(242,232,213,.12); border-color:var(--tan);
  color:var(--cream); margin-bottom:20px;
}
.ty-hero h1{
  color:var(--cream); font-size:40px; line-height:1.28; margin-bottom:20px;
  letter-spacing:1px;
}
.ty-sub{ font-size:16.5px; line-height:1.9; color:rgba(242,232,213,.88); max-width:720px; }
.ty-cta{ margin-top:30px; display:flex; flex-wrap:wrap; gap:14px; }
.ty-ghost{ border-color:var(--tan); color:var(--cream); }
.ty-ghost:hover{ background:rgba(242,232,213,.1); border-color:var(--cream); color:var(--cream); }

/* ---------- 板块 2:人员要求(左右咬合) ---------- */
.ty-req{ padding:80px 0 60px; background:var(--paper); }
.ty-req-grid{ display:grid; grid-template-columns:1fr 1.15fr; gap:48px; align-items:center; }
.ty-req-img img{
  border-radius:18px; box-shadow:var(--shadow);
  /* 图片自身也做一个相反方向的柔化裁切,与 hero 呼应 */
  clip-path:polygon(0 0,100% 4%,100% 100%,0 96%);
}
.ty-secno{
  font-family:var(--font-mono); letter-spacing:2px; color:var(--brown-3);
  font-size:13px; margin-bottom:10px;
}
.ty-req-txt h2{ font-size:28px; margin-bottom:18px; }
.ty-req-txt p{ margin-bottom:14px; color:var(--ink-2); }
.ty-check{ margin:18px 0 0; padding-left:0; }
.ty-check li{
  position:relative; padding:10px 0 10px 34px; border-bottom:1px dashed var(--line);
  font-size:14.5px;
}
.ty-check li::before{
  content:""; position:absolute; left:4px; top:15px; width:14px; height:14px;
  border:2px solid var(--brown-3); border-radius:4px; background:var(--paper-2);
}
.ty-check li::after{
  content:""; position:absolute; left:8px; top:17px; width:8px; height:5px;
  border-left:2px solid var(--brown); border-bottom:2px solid var(--brown);
  transform:rotate(-45deg);
}

/* ---------- 板块 3:评标作用(墨黑) ---------- */
.ty-role{
  background:var(--ink); color:var(--cream);
  padding:80px 0 90px;
  /* 上缘与 hero 呼应的柔化切口 */
  clip-path:polygon(0 6%,36% 0,100% 5%,100% 100%,0 100%);
  margin-top:30px;
}
.ty-num-light{ font-family:var(--font-mono); letter-spacing:3px; color:var(--tan); font-size:13px; }
.ty-light-h{ color:var(--cream); font-size:30px; margin:8px 0 34px; }
.ty-role-row{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.ty-role-key{
  background:var(--ink-2); border:1px solid #3A342C; border-radius:14px;
  padding:26px 22px; box-shadow:0 5px 0 #000;
}
.ty-key-num{
  display:inline-flex; align-items:center; justify-content:center;
  width:40px; height:40px; border-radius:9px; margin-bottom:16px;
  background:var(--brown); color:var(--cream);
  font-family:var(--font-mono); font-weight:700;
  box-shadow:0 3px 0 #2A1E13;
}
.ty-role-key h3{ color:var(--cream); font-size:19px; margin-bottom:10px; }
.ty-role-key p{ color:rgba(242,232,213,.78); font-size:14px; }
.ty-inlink{ color:var(--tan); text-decoration:underline; text-underline-offset:3px; }

/* ---------- 板块 4:条款对照表 ---------- */
.ty-clause{ padding:80px 0; background:var(--paper-2); }
.ty-clause h2{ font-size:28px; margin-bottom:12px; }
.ty-lead{ max-width:760px; margin-bottom:24px; color:var(--ink-2); }
.ty-table-wrap{ box-shadow:var(--shadow-sm); border-radius:12px; overflow:hidden; }
.ty-tbl{ background:var(--paper); }
.ty-tbl th{ font-size:14px; }
.ty-tbl td{ font-size:14px; }
.ty-tbl tbody tr:nth-child(even){ background:var(--paper-2); }
.ty-note{ margin-top:14px; font-size:12.5px; color:var(--brown-3); }

/* ---------- 板块 5:配置建议(竖排标签) ---------- */
.ty-adv{ padding:80px 0; background:var(--paper); }
.ty-adv-grid{ display:grid; grid-template-columns:280px 1fr; gap:48px; }
.ty-side{ position:relative; }
.ty-side-label{
  font-family:var(--font-mono); letter-spacing:3px; color:var(--brown-3);
  writing-mode:vertical-rl; text-orientation:mixed; margin-bottom:16px;
}
.ty-side h2{ font-size:26px; line-height:1.4; }
.ty-adv-i{
  padding:18px 0 18px 26px; border-left:3px solid var(--brown-3);
  margin-bottom:14px; background:var(--paper-2); border-radius:0 10px 10px 0;
  font-size:14.5px; color:var(--ink-2);
}
.ty-adv-i b{ color:var(--ink); font-family:var(--font-head); }
.ty-inlink{ color:var(--brown-2); }

/* ---------- 板块 6:案例(错位) ---------- */
.ty-case{ padding:70px 0; background:var(--paper-3); }
.ty-case-grid{ display:grid; grid-template-columns:1.1fr 1fr; gap:48px; align-items:center; }
.ty-case-txt h2{ font-size:26px; margin:8px 0 16px; }
.ty-case-txt p{ margin-bottom:14px; color:var(--ink-2); }
.ty-case-tags{
  font-family:var(--font-mono); font-size:12.5px; color:var(--brown-2);
  border-top:1px dashed var(--line-2); padding-top:12px;
}
.ty-case-img img{
  border-radius:16px; box-shadow:var(--shadow);
  transform:translateY(24px);
  clip-path:polygon(0 4%,100% 0,100% 96%,0 100%);
}

/* ---------- 板块 7:FAQ ---------- */
.ty-faq{ padding:80px 0; background:var(--paper); }
.ty-faq h2{ font-size:28px; margin-bottom:26px; }
.ty-faq-list{ max-width:860px; }
.ty-faq-i{
  border:1px solid var(--line); border-radius:12px; margin-bottom:12px;
  background:var(--paper-2); overflow:hidden;
}
.ty-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;
}
.ty-faq-i summary::-webkit-details-marker{ display:none; }
.ty-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);
}
.ty-faq-i[open] summary::after{ content:"–"; }
.ty-faq-i p{ padding:0 20px 18px; color:var(--ink-2); font-size:14.5px; }
.ty-faq-i a{ color:var(--brown-2); text-decoration:underline; text-underline-offset:3px; }

/* ---------- 板块 8:CTA ---------- */
.ty-cta{
  background:
    linear-gradient(120deg, rgba(74,55,40,.92), rgba(28,26,23,.92)),
    url("../images/scene-toubiao.jpg") center/cover no-repeat;
  color:var(--cream); text-align:center; padding:80px 0;
  clip-path:polygon(0 8%,50% 0,100% 8%,100% 100%,0 100%);
}
.ty-cta h2{ color:var(--cream); font-size:30px; margin-bottom:14px; }
.ty-cta p{ color:rgba(242,232,213,.85); max-width:640px; margin:0 auto 26px; }
.ty-cta-row{ display:flex; justify-content:center; flex-wrap:wrap; gap:14px; }
.ty-cta-links{ margin-top:24px; font-size:13.5px; color:rgba(242,232,213,.7); }
.ty-cta-links a{ color:var(--tan); }

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .ty-hero{ clip-path:none; padding:70px 0 60px; }
  .ty-hero h1{ font-size:30px; }
  .ty-req-grid,.ty-case-grid{ grid-template-columns:1fr; gap:30px; }
  .ty-role{ clip-path:none; padding:60px 0; }
  .ty-role-row{ grid-template-columns:1fr; }
  .ty-adv-grid{ grid-template-columns:1fr; gap:20px; }
  .ty-side-label{ writing-mode:horizontal-tb; }
  .ty-case-img img{ transform:none; }
  .ty-cta{ clip-path:none; }
}
@media (max-width:640px){
  .ty-hero h1{ font-size:25px; }
  .ty-req-txt h2,.ty-clause h2,.ty-faq h2,.ty-light-h{ font-size:23px; }
}

/* 表格列宽(由内联 col 迁移) */
.ty-tbl{table-layout:fixed;}
.ty-tbl col:nth-child(1){width:22%}
.ty-tbl col:nth-child(2){width:40%}
.ty-tbl col:nth-child(3){width:38%}

/* 招标文件条款解读 */
.yt-clause{padding:60px 0;background:var(--paper);}
.yt-clause h2{font-size:26px;margin-bottom:16px;}
.yt-clause>div>p{margin-bottom:14px;color:var(--ink-2);}
.yt-clause b{color:var(--ink);}

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