/* 简单聚合支付 - 极简浅色设计系统 */
:root{
  --bg:#ffffff;
  --surface:#f7f8fa;
  --surface-2:#eef1f5;
  --ink:#0f172a;
  --ink-2:#475569;
  --ink-3:#94a3b8;
  --line:#e6e8ec;
  --accent:#2563eb;
  --accent-2:#1d4ed8;
  --accent-soft:#eff4ff;
  --ok:#16a34a;
  --radius:14px;
  --shadow:0 1px 2px rgba(15,23,42,.04),0 8px 24px rgba(15,23,42,.06);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:15px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;border:0}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--accent-2)}
h1,h2,h3,h4,h5{margin:0;font-weight:650;letter-spacing:-.01em;color:var(--ink)}
p{margin:0}
.sp-wrap{max-width:1120px;margin:0 auto;padding:0 24px}
.align-center{text-align:center}
.clearfix:after{content:"";display:block;clear:both}

/* ---------- 顶栏 ---------- */
.sp-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.86);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
}
.sp-header-in{display:flex;align-items:center;gap:32px;height:64px}
.sp-brand{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:-.02em;white-space:nowrap}
.sp-brand:hover{color:var(--ink)}
.sp-brand i{display:inline-block;width:10px;height:10px;border-radius:3px;background:var(--accent);margin-right:8px;vertical-align:1px}
.sp-nav{display:flex;gap:26px;margin-right:auto}
.sp-nav a{color:var(--ink-2);font-size:14px}
.sp-nav a:hover{color:var(--ink)}
.sp-actions{display:flex;gap:10px;margin-left:auto}
.sp-btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:38px;padding:0 18px;border-radius:10px;
  background:var(--accent);color:#fff;font-size:14px;font-weight:550;
  border:1px solid var(--accent);transition:.15s;
}
.sp-btn:hover{background:var(--accent-2);border-color:var(--accent-2);color:#fff}
.sp-btn.ghost{background:transparent;color:var(--ink-2);border-color:var(--line)}
.sp-btn.ghost:hover{color:var(--ink);border-color:var(--ink-3);background:var(--surface)}
.sp-btn.big{height:46px;padding:0 28px;font-size:15px;border-radius:12px}

/* ---------- 首页 Hero ---------- */
.sp-hero{padding:88px 0 72px;background:linear-gradient(180deg,#fff 0%,var(--surface) 100%)}
.sp-hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.sp-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--accent);background:var(--accent-soft);border:1px solid #dbe6ff;border-radius:999px;padding:4px 12px;margin-bottom:20px}
.sp-eyebrow b{width:6px;height:6px;border-radius:50%;background:var(--accent)}
.sp-hero h1{font-size:44px;line-height:1.22;margin-bottom:18px}
.sp-hero h1 em{font-style:normal;color:var(--accent)}
.sp-hero-sub{color:var(--ink-2);font-size:16px;max-width:520px;margin-bottom:30px}
.sp-hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.sp-hero-note{margin-top:18px;font-size:13px;color:var(--ink-3)}
.sp-card{
  background:#fff;border:1px solid var(--line);border-radius:18px;
  box-shadow:var(--shadow);padding:26px;
}
.sp-card-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.sp-card-head span{font-size:13px;color:var(--ink-3)}
.sp-card-head b{font-size:13px;color:var(--ok);background:#ecfdf3;border:1px solid #bbf7d0;padding:2px 10px;border-radius:999px;font-weight:550}
.sp-pay-row{display:flex;align-items:center;gap:14px;padding:14px 0;border-top:1px solid var(--surface-2)}
.sp-pay-row:first-of-type{border-top:0}
.sp-pay-ico{width:38px;height:38px;border-radius:10px;background:var(--surface);display:flex;align-items:center;justify-content:center;font-size:16px;color:var(--ink-2)}
.sp-pay-row .t{flex:1}
.sp-pay-row .t b{display:block;font-size:14px;font-weight:600}
.sp-pay-row .t span{font-size:12px;color:var(--ink-3)}
.sp-pay-row .amt{font-size:14px;font-weight:650;font-variant-numeric:tabular-nums}
.sp-pay-row .st{font-size:12px;color:var(--ok)}

/* ---------- 通用区块 ---------- */
.sp-section{padding:76px 0}
.sp-section.alt{background:var(--surface)}
.sp-sec-head{text-align:center;max-width:640px;margin:0 auto 48px}
.sp-sec-head h2{font-size:30px;margin-bottom:12px}
.sp-sec-head p{color:var(--ink-2)}
.sp-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.sp-grid.c3{grid-template-columns:repeat(3,1fr)}
.sp-feat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:.15s}
.sp-section.alt .sp-feat{background:#fff}
.sp-feat:hover{border-color:#cfd8e3;box-shadow:var(--shadow);transform:translateY(-2px)}
.sp-feat i{display:flex;width:40px;height:40px;border-radius:11px;background:var(--accent-soft);color:var(--accent);align-items:center;justify-content:center;font-size:17px;margin-bottom:16px}
.sp-feat h4{font-size:16px;margin-bottom:8px}
.sp-feat p{font-size:13.5px;color:var(--ink-2)}

/* ---------- 接入步骤 ---------- */
.sp-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:28px}
.sp-step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.sp-step b.n{position:absolute;top:20px;right:22px;font-size:30px;font-weight:700;color:var(--surface-2);line-height:1}
.sp-step h4{font-size:15px;margin-bottom:8px}
.sp-step p{font-size:13.5px;color:var(--ink-2)}
.sp-code{
  background:#0f172a;color:#e2e8f0;border-radius:var(--radius);
  padding:20px 22px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:12.5px;line-height:1.9;overflow-x:auto;
}
.sp-code .k{color:#7dd3fc}
.sp-code .c{color:#64748b}

/* ---------- CTA ---------- */
.sp-cta{padding:72px 0;background:var(--ink);color:#fff;text-align:center}
.sp-cta h2{color:#fff;font-size:28px;margin-bottom:12px}
.sp-cta p{color:#94a3b8;margin-bottom:28px}
.sp-cta .sp-btn{background:#fff;color:var(--ink);border-color:#fff}
.sp-cta .sp-btn:hover{background:var(--surface);color:var(--ink)}
.sp-cta .sp-btn.ghost{background:transparent;color:#cbd5e1;border-color:#334155}
.sp-cta .sp-btn.ghost:hover{color:#fff;border-color:#64748b}

/* ---------- 页脚 ---------- */
.sp-footer{background:var(--surface);border-top:1px solid var(--line);padding:56px 0 32px}
.sp-foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;margin-bottom:40px}
.sp-foot-grid h5{font-size:13px;color:var(--ink);margin-bottom:14px;font-weight:650}
.sp-foot-grid p{margin:0 0 8px;font-size:13.5px}
.sp-foot-grid a{color:var(--ink-2)}
.sp-foot-grid a:hover{color:var(--ink)}
.sp-foot-brand{font-size:16px;font-weight:700;margin-bottom:12px}
.sp-foot-brand i{display:inline-block;width:9px;height:9px;border-radius:3px;background:var(--accent);margin-right:8px}
.sp-foot-desc{font-size:13.5px;color:var(--ink-2);max-width:280px}
.sp-foot-bottom{border-top:1px solid var(--line);padding-top:22px;font-size:13px;color:var(--ink-3);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

/* ---------- 兼容旧内容页（关于/功能/协议） ---------- */
.container{max-width:960px;margin:0 auto;padding:0 24px}
.header-body{padding:72px 0 36px;text-align:center}
.header-body h2{font-size:30px;margin-bottom:14px}
.text-lead{color:var(--ink-2);font-size:15px;max-width:680px;margin:0 auto}
.api_doc h4,.content h4{font-size:16px;margin:30px 0 10px}
.api_doc p,.content p{color:var(--ink-2);margin:0 0 12px}
.api_doc strong{color:var(--ink)}
.row{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.row>.2u{grid-column:span 2}
.row>.4u{grid-column:span 4}
.row>.6u{grid-column:span 6}
.row>.8u{grid-column:span 8}
.row>.12u{grid-column:span 12}
.box_item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin-top:20px}
.box_item h4{font-size:16px;margin-bottom:8px}
.box_item .content p{font-size:13.5px}
.advantage_img img{max-width:110px}
.align-center img{margin:0 auto}
.image img{max-width:100%}
.know_more{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;color:var(--ink-2)}
.know_more:hover{color:var(--ink-2);border-color:#cfd8e3;box-shadow:var(--shadow)}
.know_more h4{font-size:15px;margin-bottom:8px;color:var(--ink)}
.know_more p{font-size:13px}
.know_more.icon:before{font-family:FontAwesome;display:block;font-size:20px;color:var(--accent);margin-bottom:14px}
.bottom_bg{background:var(--surface);padding:64px 0}
.bottom_bg h2{color:var(--ink)!important;font-size:26px;text-align:center;margin-bottom:36px}
.cd-scrolling-bg{padding:64px 0}
.cd-scrolling-bg.bg_gary{background:var(--surface)}
.cd-scrolling-bg h2{font-size:26px;text-align:center;margin-bottom:14px}
.cd-scrolling-bg>p,.cd-scrolling-bg .container>p{text-align:center;color:var(--ink-2);max-width:640px;margin:0 auto 32px}
.about_banner,.about_img img{border-radius:var(--radius)}
.about_info h3,.company_info h3{font-size:20px;margin:24px 0 10px}
.company_info p,.contact_block p{color:var(--ink-2);margin-bottom:10px}
.history_title{font-size:20px;text-align:center;margin:32px 0 20px}
.history_main{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.list{list-style:none;margin:0;padding:0}
.list li{padding:10px 0;border-bottom:1px solid var(--surface-2);color:var(--ink-2)}
.list li:last-child{border-bottom:0}
.button{display:inline-flex;align-items:center;justify-content:center;height:40px;padding:0 22px;border-radius:10px;background:var(--accent);color:#fff;font-size:14px;font-weight:550;border:1px solid var(--accent)}
.button:hover{background:var(--accent-2);color:#fff}
.button.alt{background:var(--accent)}
.button.big{height:46px;padding:0 30px;font-size:15px}
.icon{margin-right:6px}
.footer_link img{width:96px;border-radius:10px}

/* ---------- 响应式 ---------- */
@media (max-width:960px){
  .sp-hero-grid{grid-template-columns:1fr;gap:40px}
  .sp-hero{padding:56px 0}
  .sp-hero h1{font-size:34px}
  .sp-grid{grid-template-columns:repeat(2,1fr)}
  .sp-grid.c3,.sp-steps{grid-template-columns:1fr}
  .sp-foot-grid{grid-template-columns:1fr 1fr}
  .sp-nav{display:none}
  .row>*{grid-column:span 12}
}
@media (max-width:560px){
  .sp-grid{grid-template-columns:1fr}
  .sp-foot-grid{grid-template-columns:1fr}
  .sp-actions .ghost{display:none}
  .sp-header-in{gap:16px}
}