/* ============================================================
   yfxerp.com · 站点地图 / 404 / 专题活动 / 后台预留 共用样式
   ============================================================ */

/* ---------- 站点地图 ---------- */
.sitemap-hero{background:linear-gradient(135deg,#E8F2FE 0%,#f4faf8 55%,#E4F7EF 100%);padding:110px 0 60px;text-align:center}
.sitemap-hero h1{font-size:clamp(28px,3.8vw,40px);color:#152A3F;margin:10px 0 10px}
.sitemap-hero h1 em{font-style:normal;background:linear-gradient(90deg,#2F7CF6,#2EBF8B);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.sitemap-hero p{color:#5a6d85;font-size:15px;margin:0}
.sitemap-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.sitemap-col{background:#fff;border:1px solid #eaf1fa;border-radius:18px;padding:28px 24px}
.sitemap-col h3{font-size:16px;color:#152A3F;margin-bottom:16px;padding-bottom:12px;border-bottom:2px solid;position:relative}
.sitemap-col h3::after{content:"";position:absolute;left:0;bottom:-2px;width:44px;height:2px;background:linear-gradient(90deg,#2F7CF6,#2EBF8B)}
.sitemap-col:nth-child(4n+1) h3{color:#1E5FD8}
.sitemap-col:nth-child(4n+2) h3{color:#1f9d72}
.sitemap-col:nth-child(4n+3) h3{color:#2F7CF6}
.sitemap-col:nth-child(4n) h3{color:#2EBF8B}
.sitemap-col ul{list-style:none;margin:0;padding:0}
.sitemap-col li{margin-bottom:4px}
.sitemap-col a{display:block;font-size:13.5px;color:#5a6d85;padding:7px 10px;border-radius:8px;text-decoration:none;transition:.25s}
.sitemap-col a:hover{background:linear-gradient(135deg,#E8F2FE,#E4F7EF);color:#1E5FD8;padding-left:14px}

/* ---------- 404 ---------- */
.err-page{min-height:62vh;display:flex;align-items:center;text-align:center;padding:120px 0;position:relative;overflow:hidden;
  background:linear-gradient(135deg,#E8F2FE 0%,#f4faf8 55%,#E4F7EF 100%)}
.err-page::before{content:"";position:absolute;left:-100px;top:-100px;width:380px;height:380px;border-radius:50%;background:radial-gradient(circle,rgba(47,124,246,.16),transparent 65%)}
.err-page::after{content:"";position:absolute;right:-100px;bottom:-160px;width:460px;height:460px;border-radius:50%;background:radial-gradient(circle,rgba(46,191,139,.14),transparent 65%)}
.err-page .container{position:relative;z-index:2}
.err-code{font-size:clamp(90px,14vw,150px);font-weight:900;line-height:1;background:linear-gradient(120deg,#2F7CF6,#2EBF8B);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:6px}
.err-title{font-size:26px;color:#152A3F;margin:18px 0 12px}
.err-desc{color:#5a6d85;font-size:15px;margin-bottom:34px;line-height:1.9}
.err-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn-ghost-blue{border:1.5px solid #bcd3ef;color:#1E5FD8;background:#fff}
.btn-ghost-blue:hover{background:linear-gradient(135deg,#2F7CF6,#1E5FD8);color:#fff;border-color:transparent;transform:translateY(-3px)}

/* ---------- 专题活动页 ---------- */
.activity-hero{position:relative;overflow:hidden;padding:130px 0 90px;text-align:center;color:#fff;
  background:linear-gradient(120deg,#1c4bd0,#2F7CF6 55%,#2EBF8B)}
.activity-hero::after{content:"";position:absolute;right:-80px;top:-80px;width:360px;height:360px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.14),transparent 60%)}
.activity-hero .container{position:relative;z-index:2}
.activity-hero .act-tag{display:inline-block;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);color:#fff;font-size:13px;padding:6px 20px;border-radius:999px;letter-spacing:2px}
.activity-hero h1{font-size:clamp(32px,5vw,52px);margin:22px 0 16px;letter-spacing:1px}
.activity-hero p{color:rgba(255,255,255,.85);font-size:16px;max-width:680px;margin:0 auto;line-height:1.9}
.activity-count{display:flex;gap:40px;justify-content:center;margin-top:40px;flex-wrap:wrap}
.activity-count div b{font-size:40px;color:#7ef0c2;display:block}
.activity-count div span{font-size:13px;color:rgba(255,255,255,.75)}
.act-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.act-flow .af-item{background:#fff;border:1px solid #eaf1fa;border-radius:18px;padding:30px 24px;text-align:center;transition:.3s}
.act-flow .af-item:hover{transform:translateY(-6px);box-shadow:0 16px 40px rgba(21,42,63,.08)}
.act-flow .af-num{font-size:34px;font-weight:800;background:linear-gradient(120deg,#2F7CF6,#2EBF8B);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;display:block;margin-bottom:12px}
.act-flow h4{font-size:16px;color:#152A3F;margin-bottom:8px}
.act-flow p{font-size:13px;color:#7b8ba0;line-height:1.8;margin:0}
.act-form{max-width:640px;margin:0 auto;background:#fff;border:1px solid #eaf1fa;border-radius:22px;padding:38px 36px;box-shadow:0 18px 50px rgba(21,42,63,.06)}
.act-form h3{font-size:21px;color:#152A3F;text-align:center;margin-bottom:6px}
.act-form .af-sub{text-align:center;color:#8b9bb0;font-size:13.5px;margin-bottom:24px}
.act-form .af-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.act-form label{font-size:13px;color:#5a6d85;margin-bottom:6px;display:block}
.act-form input,.act-form select{width:100%;padding:13px 16px;border:1px solid #dbe7f5;border-radius:10px;font-size:14px;color:#152A3F;outline:none;background:#fbfdff;margin-bottom:16px;transition:.3s}
.act-form input:focus,.act-form select:focus{border-color:#2F7CF6;box-shadow:0 0 0 3px rgba(47,124,246,.1);background:#fff}
.act-form .btn{width:100%;justify-content:center}

/* ---------- 后台预留 ---------- */
.admin-wrap{min-height:60vh;display:flex;align-items:center;padding:110px 0;background:linear-gradient(135deg,#152A3F,#1E3a5c);position:relative;overflow:hidden}
.admin-wrap::after{content:"";position:absolute;right:-120px;bottom:-180px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(46,191,139,.18),transparent 60%)}
.admin-card{max-width:440px;margin:0 auto;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:24px;padding:44px 40px;backdrop-filter:blur(8px);position:relative;z-index:2}
.admin-card .ad-logo{display:flex;align-items:center;justify-content:center;gap:10px;margin-bottom:22px}
.admin-card .ad-logo img{width:38px;height:38px}
.admin-card .ad-logo b{color:#fff;font-size:19px;letter-spacing:1px}
.admin-card h3{color:#fff;font-size:20px;text-align:center;margin-bottom:8px}
.admin-card .ad-sub{color:#aebcd0;font-size:13px;text-align:center;margin-bottom:26px}
.admin-card label{color:#c5d2e2;font-size:13px;margin-bottom:6px;display:block}
.admin-card input{width:100%;padding:13px 16px;border-radius:10px;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.08);color:#fff;font-size:14px;outline:none;margin-bottom:18px;transition:.3s}
.admin-card input::placeholder{color:rgba(255,255,255,.4)}
.admin-card input:focus{border-color:#2EBF8B;box-shadow:0 0 0 3px rgba(46,191,139,.2)}
.admin-card .btn{width:100%;justify-content:center}
.admin-note{margin-top:16px;text-align:center;color:#8aa0b8;font-size:12px;line-height:1.8}

/* ---------- 法律文本页 ---------- */
.legal-wrap{max-width:820px;margin:0 auto;background:#fff;border:1px solid #eaf1fa;border-radius:20px;padding:46px 48px}
.legal-wrap h1{font-size:26px;color:#152A3F;text-align:center;margin-bottom:8px}
.legal-wrap .lg-date{text-align:center;color:#8b9bb0;font-size:13px;margin-bottom:34px}
.legal-wrap h2{font-size:18px;color:#1E5FD8;margin:30px 0 12px;padding-left:14px;border-left:4px solid #2F7CF6}
.legal-wrap p{font-size:14px;color:#5a6d85;line-height:2;margin-bottom:12px}
.legal-wrap ul{margin:0 0 14px;padding-left:22px}
.legal-wrap li{font-size:14px;color:#5a6d85;line-height:2}
.legal-wrap b{color:#152A3F}

@media (max-width:640px){
  .legal-wrap{padding:30px 22px}
}

@media (max-width:960px){
  .sitemap-grid{grid-template-columns:repeat(2,1fr)}
  .act-flow{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  .sitemap-grid{grid-template-columns:1fr}
  .act-flow{grid-template-columns:1fr}
  .act-form .af-row{grid-template-columns:1fr}
  .activity-count{gap:24px}
  .admin-card{padding:34px 24px}
}