/* ============================================================
   toubiao-beian.html 专属样式 · 投标场景纵深 + 要点叠层
   ============================================================ */

/* ---------- 首屏：纵深场景 + 叠层要点卡 ---------- */
.tb-hero{position:relative;min-height:92vh;display:flex;align-items:center;overflow:hidden;background:var(--mix-bg)}
.tb-hero-bg{position:absolute;inset:0}
.tb-hero-bg img{width:100%;height:100%;object-fit:cover}
.tb-hero-mask{position:absolute;inset:0;background:linear-gradient(100deg,rgba(255,255,255,.97) 6%,rgba(255,255,255,.9) 38%,rgba(234,244,252,.45) 68%,rgba(241,238,251,.35) 100%)}
.tb-hero-inner{position:relative;z-index:2;padding:150px 0 260px;max-width:680px}
.tb-kicker{
  display:inline-block;padding:8px 18px;border-radius:999px;
  background:rgba(255,255,255,.75);border:1px solid rgba(124,111,208,.3);
  color:var(--purple);font-weight:600;font-size:.9rem;letter-spacing:2px;
}
.tb-title{font-size:clamp(1.9rem,4.2vw,3.1rem);font-weight:800;line-height:1.3;margin:22px 0 18px}
.tb-title span{display:block}
.tb-title em{font-style:normal;background:linear-gradient(120deg,var(--blue),var(--purple));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.tb-sub{color:var(--ink-2);font-size:1.04rem;margin-bottom:28px;max-width:560px}
.tb-actions{display:flex;flex-wrap:wrap;gap:14px}

/* 首屏文字上浮动画 */
.hl{opacity:0;animation:tbUp .8s cubic-bezier(.22,.9,.3,1) forwards}
.d1{animation-delay:.15s}.d2{animation-delay:.3s}.d3{animation-delay:.45s}.d4{animation-delay:.6s}
@keyframes tbUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.hl{opacity:1;animation:none}}

/* 叠层要点卡（浮在右下，错位错落） */
.tb-stack{
  position:absolute;right:5%;bottom:70px;z-index:3;
  width:min(360px,88%);display:flex;flex-direction:column;gap:16px;
}
.tb-point{
  background:rgba(255,255,255,.94);border:1px solid var(--line);
  border-radius:var(--r-lg) var(--r-sm) var(--r-lg) var(--r-sm);
  padding:18px 20px;box-shadow:var(--shadow-2);
  transition:transform .3s,box-shadow .3s;
}
.tb-point:hover{transform:translateX(-8px);box-shadow:0 30px 60px rgba(59,143,212,.22)}
.tb-point.p2{transform:translateX(26px)}
.tb-point.p2:hover{transform:translateX(18px)}
.tb-point-num{
  display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:2px;
  color:var(--purple);background:var(--purple-bg);padding:3px 10px;border-radius:999px;margin-bottom:8px;
}
.tb-point h3{font-size:1.02rem;margin-bottom:6px}
.tb-point p{font-size:.88rem;color:var(--ink-2);line-height:1.65}
.tb-hero-wave{position:absolute;left:0;right:0;bottom:-1px;z-index:4}
.tb-hero-wave svg{display:block;width:100%;height:64px}

/* ---------- 业务讲解 ---------- */
.tb-why{background:#fff}
.tb-why-wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.why-item{display:flex;gap:16px;padding:20px 0;border-bottom:1px dashed var(--line)}
.why-item:last-child{border-bottom:none}
.why-ico{
  flex-shrink:0;width:48px;height:48px;padding:11px;border-radius:14px;
  background:var(--blue-bg);color:var(--blue);
}
.why-item:nth-child(3n) .why-ico{background:var(--purple-bg);color:var(--purple)}
.why-item h3{font-size:1.12rem;margin-bottom:8px}
.why-item p{color:var(--ink-2);font-size:.95rem}
.tb-why-fig{position:relative}
.tb-why-fig img{
  width:100%;height:auto;border-radius:var(--r-lg) var(--r-sm) var(--r-lg) var(--r-sm);
  box-shadow:var(--shadow);
}
.tb-why-fig figcaption{
  margin-top:12px;font-size:.86rem;color:var(--ink-3);text-align:center;
}
/* 荷叶光斑 */
.tb-why::before{
  content:"";position:absolute;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(124,111,208,.14),transparent 70%);
  top:-80px;right:-60px;pointer-events:none;
}

/* ---------- 对照表 ---------- */
.tb-table-sec{background:var(--mix-bg)}
.table-shell{
  background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--shadow);overflow:hidden;
}
.tb-table th{font-size:.95rem}
.tb-table tbody tr{transition:background .25s}
.tb-table-note{
  margin-top:18px;font-size:.9rem;color:var(--ink-2);
  background:var(--purple-bg);border-radius:var(--r-md);padding:14px 18px;
}

/* ---------- 驳回原因 ---------- */
.tb-reject{background:#fff;overflow:hidden}
.tb-reject::before{
  content:"";position:absolute;width:300px;height:300px;border-radius:50%;
  background:radial-gradient(circle,rgba(59,143,212,.12),transparent 70%);
  bottom:-90px;left:-70px;pointer-events:none;
}
.tb-reject-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.rj-card{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-sm) var(--r-lg) var(--r-sm) var(--r-lg);
  padding:28px 22px;box-shadow:var(--shadow);
  transition:transform .3s,box-shadow .3s;
}
.rj-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-2)}
.rj-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:12px;margin-bottom:14px;
  background:linear-gradient(135deg,var(--blue),var(--purple));color:#fff;
  font-weight:800;
}
.rj-card h3{font-size:1.05rem;margin-bottom:8px}
.rj-card p{font-size:.9rem;color:var(--ink-2)}

/* ---------- FAQ ---------- */
.tb-faq{background:var(--mix-bg)}
.tb-faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:18px 22px;transition:box-shadow .3s,border-color .3s;
}
.faq-item:hover{box-shadow:var(--shadow);border-color:rgba(59,143,212,.35)}
.faq-item summary{
  cursor:pointer;font-weight:700;font-size:1.02rem;list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:12px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:1.4rem;color:var(--blue);transition:transform .25s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item p{margin-top:12px;color:var(--ink-2);font-size:.95rem}
.faq-item p a{color:var(--blue);font-weight:600}
.faq-item p a:hover{color:var(--purple)}

/* ---------- 关联互链 ---------- */
.tb-links{background:#fff}
.tb-link-wrap{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.lk-card{
  display:block;padding:24px 22px;border:1px solid var(--line);
  border-radius:var(--r-lg) var(--r-sm) var(--r-lg) var(--r-sm);
  background:var(--blue-bg);transition:transform .3s,box-shadow .3s,background .3s;
}
.lk-card:nth-child(2n){background:var(--purple-bg)}
.lk-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-2)}
.lk-card b{display:block;font-size:1.05rem;margin-bottom:6px;color:var(--ink)}
.lk-card span{font-size:.88rem;color:var(--ink-2)}

/* ---------- 资讯 ---------- */
.tb-news{background:var(--mix-bg)}
.tb-news-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.nw-card{
  display:block;background:#fff;border-radius:var(--r-md);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow);
  transition:transform .3s,box-shadow .3s;
}
.nw-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-2)}
.nw-card img{width:100%;height:150px;object-fit:cover}
.nw-body{padding:14px 16px 16px}
.nw-body h3{font-size:.92rem;line-height:1.5;margin-bottom:8px}
.nw-body time{font-size:.8rem;color:var(--ink-3)}
.tb-news-more{text-align:center;margin-top:36px}

/* ---------- CTA ---------- */
.tb-cta{background:#fff}
.tb-cta-inner{
  position:relative;overflow:hidden;text-align:center;
  background:linear-gradient(135deg,var(--blue) 0%,var(--purple) 100%);
  border-radius:var(--r-lg);padding:60px 8%;color:#fff;box-shadow:var(--shadow-2);
}
.tb-cta-inner h2{font-size:clamp(1.4rem,2.6vw,2rem);font-weight:800;margin-bottom:14px}
.tb-cta-inner p{color:rgba(255,255,255,.9);max-width:620px;margin:0 auto 24px}
.tb-cta-contact{display:flex;justify-content:center;flex-wrap:wrap;gap:14px 34px;margin-bottom:28px}
.tb-cta-contact li{display:flex;align-items:center;gap:8px;font-size:1.05rem;font-weight:600}
.tb-cta-contact a{color:#fff}
.tb-cta-contact a:hover{color:var(--blue-bg)}
.tb-cta-actions{display:flex;justify-content:center}
.tb-cta-actions .btn{background:#fff;color:var(--purple)}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .tb-hero-inner{padding:130px 0 380px}
  .tb-stack{right:6%;bottom:40px;width:min(400px,88%)}
  .tb-why-wrap{grid-template-columns:1fr;gap:32px}
  .tb-reject-grid{grid-template-columns:repeat(2,1fr)}
  .tb-news-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:767px){
  .tb-hero{min-height:auto}
  .tb-hero-inner{padding:120px 0 340px}
  .tb-stack{position:relative;right:auto;bottom:auto;width:92%;margin:-60px auto 0;z-index:5}
  .tb-hero{display:block}
  .tb-point.p2{transform:none}
  .tb-reject-grid,.tb-link-wrap,.tb-news-grid{grid-template-columns:1fr}
}

/* ---------- 联系图标统一尺寸（style.css 仅上色，这里补尺寸） ---------- */
.footer-contact .ico,.tb-cta-contact .ico{width:20px;height:20px}
/* 对照表列宽（table-layout:fixed） */
.tb-table col:nth-child(1){width:18%}
.tb-table col:nth-child(2){width:24%}
.tb-table col:nth-child(3){width:30%}
.tb-table col:nth-child(4){width:28%}

/* ---------- 企业端/个人端 双视角对比 ---------- */
.tb-side{background:var(--paper)}
.tb-side-wrap{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.tb-side-card{
  background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg) var(--r-sm) var(--r-lg) var(--r-sm);
  padding:30px 30px 26px;box-shadow:var(--shadow);
  transition:transform .3s,box-shadow .3s;
}
.tb-side-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-2)}
.tb-side-tag{
  display:inline-block;padding:4px 14px;border-radius:999px;
  font-size:.82rem;font-weight:600;margin-bottom:14px;
}
.tb-side-card:first-child .tb-side-tag{background:var(--blue-bg);color:var(--blue)}
.tb-side-card:last-child .tb-side-tag{background:var(--purple-bg);color:var(--purple)}
.tb-side-card h3{font-size:1.1rem;margin-bottom:10px}
.tb-side-card p{color:var(--ink-2);font-size:.95rem;line-height:1.9}
.tb-side-note{
  margin-top:24px;padding:16px 22px;border-radius:var(--r-md);
  background:var(--mix-bg);color:var(--ink-2);font-size:.92rem;line-height:1.8;
}

/* ---------- 递交前自检清单 ---------- */
.tb-check-list{display:grid;grid-template-columns:1fr 1fr;gap:16px 26px}
.tb-check-item{
  display:flex;gap:14px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:18px 20px;transition:border-color .3s,transform .3s;
}
.tb-check-item:hover{border-color:var(--blue-2);transform:translateY(-3px)}
.tb-check-no{
  flex-shrink:0;width:28px;height:28px;border-radius:50%;
  background:linear-gradient(135deg,var(--blue),var(--purple));
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:.85rem;font-weight:700;
}
.tb-check-item p{color:var(--ink-2);font-size:.94rem;line-height:1.8}
.tb-check-item b{color:var(--ink)}

/* ---------- 扩充区块响应式 ---------- */
@media (max-width:1023px){
  .tb-side-wrap,.tb-check-list{grid-template-columns:1fr}
}