/* 智汇付 PayHub - 聚合支付平台演示站
 * 免责声明：本站为前端技术样例，不提供任何真实资金服务。
 * 主色：深蓝商务风  */
:root{
  --navy:#0a2c66;--navy-deep:#071e47;--blue:#1a56c9;--blue-bright:#2f6fe4;
  --blue-light:#e8eefb;--sky:#f4f7fd;--gold:#f5a623;
  --text-main:#1c2534;--text-muted:#5c6a80;--line:#dde5f0;
  --radius:14px;--max-width:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--text-main);background:#fff;line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:var(--blue);text-decoration:none}
a:hover{color:var(--navy)}
img{max-width:100%}
ul{list-style:none}

/* ===== 顶部导航 ===== */
.site-header{position:sticky;top:0;z-index:1200;height:66px;background:rgba(255,255,255,.98);box-shadow:0 1px 0 var(--line)}
.header-inner{max-width:var(--max-width);margin:0 auto;height:100%;padding:0 24px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:10px;font-size:1.16rem;font-weight:800;color:var(--navy);white-space:nowrap}
.brand-mark{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--blue-bright),var(--navy));color:#fff;display:flex;align-items:center;justify-content:center;font-size:.95rem;font-weight:800}
.brand em{font-style:normal;color:var(--blue);font-size:.8rem;font-weight:600;letter-spacing:.08em;margin-left:2px}
.main-nav{display:flex;gap:26px;margin-left:auto}
.main-nav a{color:var(--text-main);font-weight:500;font-size:.95rem;padding:20px 0;position:relative}
.main-nav a:hover,.main-nav a.on{color:var(--blue)}
.main-nav a.on::after{content:"";position:absolute;left:0;right:0;bottom:12px;height:3px;border-radius:2px;background:var(--blue)}
.header-cta{display:flex;gap:10px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 22px;border-radius:8px;font-weight:600;font-size:.94rem;border:none;cursor:pointer;transition:.2s}
.btn-blue{background:var(--blue);color:#fff!important}
.btn-blue:hover{background:var(--navy)}
.btn-line{border:1.5px solid var(--blue);color:var(--blue)!important;background:#fff}
.btn-line:hover{background:var(--blue-light)}
.btn-gold{background:var(--gold);color:#3a2500!important}
.btn-gold:hover{filter:brightness(1.06)}
.btn-lg{padding:13px 34px;font-size:1.02rem}
.nav-toggle{display:none;margin-left:auto;background:none;border:none;font-size:1.7rem;color:var(--navy);cursor:pointer}
.mobile-nav{display:none;background:#fff;border-bottom:1px solid var(--line);padding:10px 20px 16px;flex-direction:column;gap:6px}
.mobile-nav a{padding:11px 14px;border-radius:8px;background:var(--sky);color:var(--text-main);font-weight:500}
.mobile-nav.open{display:flex}

/* ===== Hero ===== */
.hero{position:relative;background:linear-gradient(118deg,var(--navy-deep) 0%,var(--navy) 44%,#12409c 78%,#1c56c9 100%);color:#fff;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:
  linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
  linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:44px 44px;pointer-events:none}
.hero-inner{position:relative;max-width:var(--max-width);margin:0 auto;padding:88px 24px 96px;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero-tag{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);padding:6px 16px;border-radius:999px;font-size:.85rem;margin-bottom:22px}
.hero h1{font-size:2.6rem;line-height:1.28;font-weight:800;margin-bottom:16px}
.hero h1 .hl{color:#7fb2ff}
.hero-sub{font-size:1.05rem;color:#c9d8f5;max-width:520px;margin-bottom:30px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.hero-points{display:flex;gap:26px;flex-wrap:wrap;color:#a9c0ea;font-size:.88rem}
.hero-points span::before{content:"✔";color:#6ee7a0;margin-right:6px}
/* 注册卡片 */
.signup-card{background:#fff;border-radius:16px;padding:30px 28px;color:var(--text-main);box-shadow:0 24px 60px rgba(4,14,38,.45)}
.signup-card h2{font-size:1.22rem;font-weight:800;margin-bottom:4px}
.signup-card .sub{color:var(--text-muted);font-size:.88rem;margin-bottom:18px}
.signup-card label{display:block;font-size:.88rem;font-weight:600;margin:12px 0 6px}
.signup-card input{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:8px;font-size:.94rem;font-family:inherit}
.signup-card input:focus{outline:2px solid var(--blue-light);border-color:var(--blue)}
.row-2{display:flex;gap:10px}
.row-2 .code-input{flex:1}
.signup-card .btn{width:100%;margin-top:18px}
.signup-card .tip{font-size:.78rem;color:var(--text-muted);margin-top:12px;line-height:1.6}
.hero-stats{position:relative;max-width:var(--max-width);margin:0 auto;padding:0 24px 44px;display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.hero-stats .item{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.15);border-radius:12px;padding:18px 20px;text-align:center}
.hero-stats .num{font-size:1.5rem;font-weight:800;color:#fff}
.hero-stats .num small{font-size:.85rem;font-weight:600}
.hero-stats .lbl{font-size:.84rem;color:#a9c0ea;margin-top:2px}

/* ===== 通用区块 ===== */
.section{max-width:var(--max-width);margin:0 auto;padding:74px 24px}
.section-head{text-align:center;max-width:760px;margin:0 auto 44px}
.kicker{display:inline-block;color:var(--blue);font-weight:700;font-size:.86rem;letter-spacing:.14em;margin-bottom:10px}
.section-head h2{font-size:1.85rem;font-weight:800;color:var(--navy);margin-bottom:12px}
.section-head p{color:var(--text-muted)}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}

/* 合作生态 Logo 墙 */
.logo-band{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff}
.logo-band-inner{max-width:var(--max-width);margin:0 auto;padding:26px 24px;display:flex;align-items:center;justify-content:center;gap:14px 44px;flex-wrap:wrap}
.logo-band .cap{font-size:.85rem;color:var(--text-muted);margin-right:8px}
.logo-chip{display:inline-flex;align-items:center;gap:8px;padding:8px 18px;border-radius:10px;background:var(--sky);color:var(--navy);font-weight:700;font-size:.95rem}
.logo-chip .dot{width:9px;height:9px;border-radius:50%;background:var(--blue)}

/* 特色卡片 */
.feature-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;transition:.22s}
.feature-card:hover{transform:translateY(-5px);box-shadow:0 16px 40px rgba(10,44,102,.12);border-color:transparent}
.feature-card .ic{width:54px;height:54px;border-radius:14px;background:var(--blue-light);color:var(--blue);display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:18px}
.feature-card h3{font-size:1.1rem;font-weight:700;margin-bottom:8px;color:var(--navy)}
.feature-card p{color:var(--text-muted);font-size:.93rem}
.feature-card ul{margin-top:12px}
.feature-card li{position:relative;padding-left:20px;color:var(--text-muted);font-size:.88rem;margin:5px 0}
.feature-card li::before{content:"›";position:absolute;left:2px;color:var(--blue);font-weight:800}

/* 深蓝数据带 */
.band-navy{background:linear-gradient(115deg,var(--navy-deep),var(--navy) 60%,#123f9b);color:#fff}
.band-navy .section{padding:58px 24px}
.band-navy h2{color:#fff}
.band-navy .section-head p{color:#b7c8ea}

/* 流程步骤 */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:step}
.flow-step{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:12px;padding:26px 22px;text-align:center;position:relative}
.flow-step .n{width:40px;height:40px;border-radius:50%;background:#fff;color:var(--navy);font-weight:800;display:flex;align-items:center;justify-content:center;margin:0 auto 14px}
.flow-step h3{font-size:1rem;margin-bottom:6px;color:#fff}
.flow-step p{font-size:.86rem;color:#b7c8ea}

/* 行业方案 */
.solution-row{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;margin-bottom:56px}
.solution-row:last-child{margin-bottom:0}
.solution-row.flip .txt{order:2}
.solution-big{font-size:2rem;font-weight:800;color:var(--navy);line-height:1.3;margin-bottom:14px}
.solution-big .thin{color:var(--blue)}
.solution-row .txt p{color:var(--text-muted);margin-bottom:16px}
.solution-panel{background:linear-gradient(150deg,var(--blue-light),#fff);border:1px solid var(--line);border-radius:16px;padding:28px}
.solution-panel .item{display:flex;gap:14px;padding:14px 0;border-bottom:1px dashed var(--line)}
.solution-panel .item:last-child{border-bottom:none}
.solution-panel .em{width:42px;height:42px;border-radius:10px;background:#fff;box-shadow:0 4px 12px rgba(10,44,102,.1);display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0}
.solution-panel h4{font-size:.98rem;color:var(--navy)}
.solution-panel p{font-size:.85rem;color:var(--text-muted)}

/* 表格 */
.table-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:.92rem}
th{background:var(--blue-light);color:var(--navy);text-align:left;font-weight:700}
th,td{padding:13px 16px;border-bottom:1px solid var(--line);white-space:nowrap}
tbody tr:hover{background:var(--sky)}
.tag{display:inline-block;padding:2px 12px;border-radius:999px;font-size:.78rem;font-weight:600}
.tag-hot{background:#fdeee0;color:#a0500a}
.tag-ok{background:#dcfce7;color:#166534}
.tag-blue{background:var(--blue-light);color:var(--blue)}
.tag-gray{background:#e8edf5;color:#4a5a75}

/* 代码块 */
pre{background:#0b1c3d;color:#d5e2f7;padding:20px;border-radius:12px;overflow-x:auto;font-size:.86rem;line-height:1.7;font-family:Consolas,Menlo,monospace}
code.k{color:#8fc1ff}

/* FAQ */
.faq-item{border:1px solid var(--line);border-radius:12px;background:#fff;margin-bottom:14px;overflow:hidden}
.faq-item summary{cursor:pointer;padding:18px 22px;font-weight:700;color:var(--navy);list-style:none;position:relative;padding-right:44px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:1.3rem;color:var(--blue)}
.faq-item[open] summary::after{content:"–"}
.faq-item .body{padding:0 22px 18px;color:var(--text-muted);font-size:.93rem}

/* CTA */
.cta-box{background:linear-gradient(120deg,var(--navy),#1550b8);border-radius:20px;color:#fff;text-align:center;padding:56px 30px}
.cta-box h2{font-size:1.7rem;margin-bottom:10px}
.cta-box p{color:#c3d4f2;margin-bottom:26px}

/* 页脚 */
.site-footer{background:var(--navy-deep);color:#9fb2d4;padding:56px 24px 26px;margin-top:0}
.footer-inner{max-width:var(--max-width);margin:0 auto}
.footer-top{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:36px;padding-bottom:30px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-top h3{color:#fff;font-size:.98rem;margin-bottom:14px}
.footer-top p{font-size:.87rem;line-height:1.8}
.footer-nav{display:flex;flex-direction:column;gap:9px}
.footer-nav a{color:#9fb2d4;font-size:.88rem}
.footer-nav a:hover{color:#fff}
.footer-kw{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.footer-kw span{background:rgba(255,255,255,.07);padding:4px 12px;border-radius:999px;font-size:.78rem;color:#b9c8e4}
.footer-bottom{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;padding-top:22px;font-size:.8rem;color:#7588ab}

/* 面包屑 & 内页横幅 */
.page-banner{background:linear-gradient(118deg,var(--navy-deep),var(--navy) 60%,#1749a8);color:#fff;padding:66px 24px 56px;text-align:center}
.page-banner h1{font-size:1.9rem;font-weight:800;margin-bottom:10px}
.page-banner p{color:#b7c8ea;max-width:700px;margin:0 auto}
.crumbs{font-size:.84rem;color:#8fa6cf;margin-bottom:14px}
.crumbs a{color:#8fa6cf}

/* 响应式 */
@media(max-width:960px){
  .hero-inner{grid-template-columns:1fr;padding:64px 20px 56px}
  .hero h1{font-size:2rem}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-2,.solution-row{grid-template-columns:1fr}
  .solution-row.flip .txt{order:0}
  .flow{grid-template-columns:repeat(2,1fr)}
  .main-nav,.header-cta{display:none}
  .nav-toggle{display:block}
}
@media(max-width:600px){
  .grid-3,.grid-4,.flow{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr}
  .section{padding:52px 18px}
}