/* ========= 4 大保障 ========= */
.guarantee{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;padding:18px 14px 20px}
.guarantee__item{display:flex;flex-direction:column;align-items:center;gap:7px;font-size:11px;color:var(--c-ink-2);letter-spacing:.3px}
.guarantee__ico{
  width:40px;height:40px;border-radius:50%;
  background:linear-gradient(135deg,#eff6ff,#e0e7ff);
  border:1px solid #c7d2fe;
  display:grid;place-items:center;font-size:18px;
  box-shadow:0 6px 14px rgba(37,99,235,.1);
}

/* ========= Footer:深紫色 ========= */
.footer{
  padding:26px 18px 30px;text-align:center;
  background:linear-gradient(180deg,#1a0d36 0%,#0f0524 100%);
  color:rgba(255,255,255,.6);
  border-top:1px solid rgba(212,175,55,.18);
  position:relative;
}
.footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(212,175,55,.5),transparent);
}
.footer__brand{font-size:14px;color:var(--c-gold);font-weight:800;margin-bottom:4px;letter-spacing:1.5px}
.footer__txt{font-size:11px;color:rgba(255,255,255,.45);margin-bottom:14px;letter-spacing:2px}
.footer__links{margin:6px 0 14px;font-size:12px}
.footer__links a{color:rgba(212,175,55,.85);padding:0 8px;transition:.2s}
.footer__links a:hover{color:var(--c-gold)}
.footer__links i{color:rgba(255,255,255,.2);font-style:normal}
.footer__law{font-size:10.5px;color:rgba(255,255,255,.35);margin-top:4px;line-height:1.7;letter-spacing:.2px}
.footer__ad{
  margin-top:12px;padding:8px 14px;font-size:10px;color:rgba(255,255,255,.4);line-height:1.7;
  background:rgba(255,255,255,.04);border-radius:8px;display:inline-block;max-width:92%;
  border:1px solid rgba(255,255,255,.06);
}

/* ========= 添加 AI 专家(企业微信)========= */
.expert-cta{
  margin:0 14px 16px;padding:18px 16px 16px;
  border-radius:18px;
  background:linear-gradient(135deg,#1e3a8a 0%,#3b82f6 50%,#6366f1 100%);
  position:relative;overflow:hidden;
  box-shadow:0 14px 32px rgba(37,99,235,.28);
  text-align:center;
}
.expert-cta::before{
  content:"";position:absolute;
  top:-40px;right:-40px;width:140px;height:140px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.18),transparent 70%);
}
.expert-cta::after{
  content:"";position:absolute;
  bottom:-30px;left:-30px;width:100px;height:100px;border-radius:50%;
  background:radial-gradient(circle,rgba(124,58,237,.3),transparent 70%);
}
.expert-cta__hd{
  position:relative;font-size:13px;color:rgba(255,255,255,.85);
  margin-bottom:12px;letter-spacing:.5px;font-weight:500;
}
.expert-cta__btn{
  position:relative;
  display:flex;align-items:center;justify-content:center;gap:10px;
  background:linear-gradient(135deg,#07c160 0%,#06ad56 100%);
  color:#fff;border-radius:14px;padding:13px 16px;
  box-shadow:0 8px 18px rgba(7,193,96,.42), inset 0 1px 0 rgba(255,255,255,.18);
  transition:.2s;
  border:1px solid rgba(255,255,255,.15);
}
.expert-cta__btn:hover{transform:translateY(-1px);box-shadow:0 12px 24px rgba(7,193,96,.55)}
.expert-cta__btn:active{transform:translateY(1px)}
.expert-cta__icon{
  flex:0 0 38px;width:38px;height:38px;border-radius:50%;
  background:rgba(255,255,255,.18);
  display:grid;place-items:center;
  border:1px solid rgba(255,255,255,.25);
}
.expert-cta__txt{
  flex:1;min-width:0;text-align:left;display:flex;flex-direction:column;gap:2px;
}
.expert-cta__txt strong{font-size:15px;font-weight:800;letter-spacing:.6px;line-height:1.2}
.expert-cta__txt em{font-size:11px;opacity:.85;font-weight:500;letter-spacing:.3px;line-height:1.2}
.expert-cta__arrow{
  flex:0 0 26px;
  display:inline-flex;align-items:center;justify-content:center;
  width:26px;height:26px;border-radius:50%;
  background:rgba(255,255,255,.18);
  border:1px solid rgba(255,255,255,.25);
  animation:expertArrow 1.4s ease-in-out infinite;
}
.expert-cta__arrow svg{display:block}
@keyframes expertArrow{
  0%,100%{transform:translateX(0)}
  50%{transform:translateX(3px)}
}