/* ============================================================
   聚合支付门户首页样式（改版）
   布局与视觉语言参考 shop.xxonl.com：
   蓝色主色 / 吸顶毛玻璃导航 / 深蓝渐变 Hero / 卡片式区块 / 响应式
   ============================================================ */
:root{--primary:#2563eb;--primary-dark:#1d4ed8;--text:#1e293b;--text-sub:#64748b;--bg:#f8fafc;--line:#e2e8f0}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--text);background:#fff;line-height:1.6}
a{text-decoration:none;color:inherit}
img{max-width:100%}
.container{max-width:1120px;margin:0 auto;padding:0 24px}
section[id]{scroll-margin-top:80px}

/* ---------- 导航 ---------- */
.nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:700}
.brand-mark{width:34px;height:34px;border-radius:8px;background:linear-gradient(135deg,#2563eb,#7c3aed);display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px;font-weight:800;flex:none}
.nav-links{display:flex;align-items:center;gap:26px;font-size:15px;color:var(--text-sub)}
.nav-links a:hover{color:var(--primary)}
.nav-toggle{display:none;box-sizing:border-box;width:42px;height:42px;padding:10px 11px;background:none;border:none;cursor:pointer;flex-direction:column;justify-content:space-between}
.nav-toggle svg{display:block}
.nav-toggle .ic-close{display:none}
.nav-toggle.open .ic-menu{display:none}
.nav-toggle.open .ic-close{display:block}
.nav-drawer{display:none;background:#fff;border-top:1px solid var(--line);padding:6px 24px 18px}
.nav-drawer.open{display:block;animation:navDrop .18s ease}
@keyframes navDrop{from{transform:translateY(-6px);opacity:0}to{transform:none;opacity:1}}

/* ---------- 按钮 ---------- */
.btn{display:inline-block;padding:10px 26px;border-radius:8px;font-size:15px;font-weight:600;transition:.2s;cursor:pointer;border:none;line-height:1.5}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);box-shadow:0 4px 14px rgba(37,99,235,.35)}
.btn-ghost{border:1px solid #cbd5e1;color:var(--text)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.btn-sm{padding:7px 18px;font-size:14px;border-radius:7px}

/* ---------- Hero ---------- */
.hero{background:linear-gradient(160deg,#1e3a8a 0%,#172554 55%);padding:64px 0 84px;text-align:center;overflow:hidden;position:relative}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg .slide{position:absolute;inset:0;opacity:0;animation:heroFade 36s linear infinite}
.s1{background:linear-gradient(150deg,#1d4ed8 0%,#1e3a8a 45%,#0f172a 100%)}
.s2{background:linear-gradient(150deg,#5b21b6 0%,#312e81 45%,#0f172a 100%);animation-delay:9s}
.s3{background:linear-gradient(150deg,#0e7490 0%,#155e75 45%,#0f172a 100%);animation-delay:18s}
.s4{background:linear-gradient(150deg,#9d174d 0%,#881337 45%,#0f172a 100%);animation-delay:27s}
@keyframes heroFade{0%{opacity:0}4%{opacity:1}25%{opacity:1}29%{opacity:0}100%{opacity:0}}
.hero>.container{position:relative;z-index:2}
.hero::before{content:"";position:absolute;width:640px;height:640px;border-radius:50%;background:radial-gradient(circle,rgba(167,139,250,.22),transparent 65%);top:-280px;right:-160px;z-index:1;animation:drift1 16s ease-in-out infinite alternate}
.hero::after{content:"";position:absolute;width:540px;height:540px;border-radius:50%;background:radial-gradient(circle,rgba(96,165,250,.22),transparent 65%);bottom:-260px;left:-120px;z-index:1;animation:drift2 20s ease-in-out infinite alternate}
@keyframes drift1{from{transform:translate(0,0)}to{transform:translate(-46px,32px)}}
@keyframes drift2{from{transform:translate(0,0)}to{transform:translate(34px,-38px)}}
@media (prefers-reduced-motion:reduce){.hero-bg .slide,.hero::before,.hero::after,.stat-num{animation:none}.hero-bg .s1{opacity:1}}
.hero h1{font-size:42px;font-weight:800;letter-spacing:-.5px;margin-bottom:18px;position:relative;color:#fff}
.hero h1 span{background:linear-gradient(90deg,#93c5fd,#c4b5fd);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{font-size:17.5px;color:rgba(255,255,255,.82);max-width:660px;margin:0 auto 38px;position:relative}
.hero-actions{display:flex;gap:16px;justify-content:center;position:relative;flex-wrap:wrap}
.hero-actions .btn{padding:14px 38px;font-size:16px;border-radius:10px}
.hero-actions .btn-primary{background:#3b82f6;box-shadow:0 6px 20px rgba(15,23,42,.35)}
.hero-actions .btn-primary:hover{background:#60a5fa;box-shadow:0 6px 24px rgba(15,23,42,.45)}
.hero-actions .btn-ghost{border-color:rgba(255,255,255,.55);color:#fff;background:rgba(255,255,255,.08)}
.hero-actions .btn-ghost:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.16)}
/* 渠道胶囊条 */
.channel-bar{position:relative;z-index:2;margin-top:52px}
.channel-bar .cb-title{font-size:13px;color:rgba(255,255,255,.55);letter-spacing:2px;margin-bottom:16px}
.channel-pills{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.channel-pills span{padding:7px 18px;border-radius:999px;border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.06);color:rgba(255,255,255,.85);font-size:13.5px;backdrop-filter:blur(4px)}

/* ---------- 通用区块 ---------- */
.section{padding:56px 0}
.section-title{text-align:center;font-size:30px;font-weight:800;margin-bottom:14px}
.section-sub{text-align:center;color:var(--text-sub);margin-bottom:36px;font-size:16px}

/* ---------- 平台优势（左文右卡） ---------- */
.about{background:#eef4ff}
.about-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:start}
.about-text p{font-size:15.5px;color:var(--text-sub);margin-bottom:14px;text-align:justify}
.quote{border-left:3px solid var(--primary);background:#eff6ff;border-radius:0 12px 12px 0;padding:18px 22px;font-size:16px;font-weight:600;color:var(--primary-dark);margin-top:22px}
.adv-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.adv{border:1px solid var(--line);border-radius:12px;padding:20px;background:#fff;transition:.25s}
.adv:hover{border-color:#bfdbfe;box-shadow:0 10px 24px rgba(30,41,59,.07)}
.adv h4{font-size:15.5px;margin-bottom:6px;display:flex;align-items:center;gap:8px}
.adv .dot{width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,#2563eb,#7c3aed);flex:none}
.adv p{font-size:13.5px;color:var(--text-sub)}

/* ---------- 服务承诺 ---------- */
.promise-title{margin-top:44px;text-align:center;font-size:21px;font-weight:800}
.promise-sub{text-align:center;color:var(--text-sub);font-size:14.5px;margin:8px 0 22px}
.promises{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.promise{display:flex;align-items:flex-start;gap:12px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px}
.promise .p-icon{font-size:21px;line-height:1.2;flex:none}
.promise h5{font-size:14.5px;margin-bottom:3px}
.promise p{font-size:13px;color:var(--text-sub)}

/* ---------- 产品能力卡片 ---------- */
.features{background:#fff}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:30px 24px;transition:.25s}
.card:hover{transform:translateY(-6px);box-shadow:0 14px 34px rgba(30,41,59,.09);border-color:#bfdbfe}
.card .icon{width:48px;height:48px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:18px}
.card h3{font-size:18px;margin-bottom:10px}
.card p{font-size:14.5px;color:var(--text-sub)}
.i1{background:#eff6ff}.i2{background:#f0fdf4}.i3{background:#fef3c7}.i4{background:#faf5ff}

/* ---------- 收银台展示（手机 mockup + 接入步骤） ---------- */
.cases{background:#f5f3ff}
.demo-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:52px;align-items:center}
.phone{width:100%;max-width:300px;margin:0 auto;background:#0f172a;border-radius:34px;padding:10px;box-shadow:0 18px 40px rgba(30,41,59,.18);transition:.3s}
.demo-grid:hover .phone{transform:translateY(-8px);box-shadow:0 26px 54px rgba(30,41,59,.26)}
.screen{background:#f6f7fb;border-radius:26px;overflow:hidden;text-align:left;font-size:13px}
.screen .sc-head{padding:18px 18px 8px;text-align:center}
.screen .sc-head b{font-size:14.5px}
.screen .sc-head em{display:block;font-style:normal;color:var(--text-sub);font-size:11px;margin-top:2px}
.screen .sc-amount{padding:6px 18px 16px;text-align:center}
.screen .sc-amount span{font-size:12px;color:var(--text-sub)}
.screen .sc-amount b{display:block;font-size:32px;font-weight:800;letter-spacing:-1px}
.sc-list{background:#fff;border-top:1px solid var(--line);padding:6px 0}
.sc-item{display:flex;align-items:center;gap:12px;padding:11px 18px;transition:.15s}
.sc-item:hover{background:#f8fafc}
.sc-item .sc-ico{width:26px;height:26px;border-radius:6px;display:flex;align-items:center;justify-content:center;font-size:15px;flex:none}
.sc-alipay{background:#eff6ff}.sc-wx{background:#f0fdf4}.sc-qq{background:#eef2ff}.sc-union{background:#fef2f2}
.sc-item i{font-style:normal;flex:1}
.sc-item .sc-arrow{color:#cbd5e1}
.screen .sc-pay{padding:16px 18px 20px}
.screen .sc-pay .btn{display:block;width:100%;text-align:center;background:linear-gradient(120deg,#3b82f6,#2563eb);color:#fff;border-radius:10px;padding:12px 0;font-size:15px;box-shadow:0 6px 16px rgba(37,99,235,.35)}
.steps{display:flex;flex-direction:column;gap:14px}
.step{display:flex;gap:16px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 18px;transition:.25s}
.step:hover{border-color:#bfdbfe;box-shadow:0 10px 24px rgba(30,41,59,.07)}
.step .s-num{width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,#2563eb,#7c3aed);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;flex:none}
.step h4{font-size:15.5px;margin-bottom:3px}
.step p{font-size:13.5px;color:var(--text-sub)}

/* ---------- 联系我们 ---------- */
.contact{background:#ecfdf5}
.contact-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:36px;align-items:stretch}
.map-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;min-height:380px}
.map-card svg{position:absolute;inset:0;width:100%;height:100%}
.map-tip{position:absolute;left:14px;bottom:14px;background:rgba(255,255,255,.92);border-radius:10px;padding:9px 14px;box-shadow:0 4px 14px rgba(30,41,59,.10);font-size:12.5px}
.map-tip b{display:block;font-size:13.5px}
.map-tip span{color:var(--text-sub)}
.contact-info{display:flex;flex-direction:column;gap:14px;justify-content:center}
.c-item{display:flex;gap:14px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:15px 18px;align-items:center;transition:.25s}
.c-item:hover{border-color:#a7f3d0}
.c-icon{width:42px;height:42px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:19px;flex:none}
.ci1{background:#eff6ff}.ci2{background:#f0fdf4}.ci3{background:#fef3c7}
.c-item h4{font-size:12.5px;color:var(--text-sub);font-weight:600;margin-bottom:1px}
.c-item p{font-size:15.5px;font-weight:600}
.c-item p a:hover{color:var(--primary)}
.c-item p .tel-sep{color:#cbd5e1;margin:0 8px;font-weight:400}
.reg-lead{border-radius:14px;padding:20px 22px;background:linear-gradient(120deg,#eff6ff,#faf5ff);border:1px dashed #bfdbfe}
.reg-lead h4{font-size:16px;margin-bottom:6px;color:var(--primary-dark)}
.reg-lead p{font-size:14px;color:var(--text-sub);margin-bottom:14px}

/* ---------- 页脚 ---------- */
footer{border-top:1px solid var(--line);padding:30px 0;text-align:center;color:var(--text-sub);font-size:13.5px;background:var(--bg)}
footer a:hover{color:var(--primary)}
footer .sep{margin:0 10px;color:#cbd5e1}
.footer-links{margin-bottom:10px}

/* ---------- 回到顶部 ---------- */
.back-top{position:fixed;right:18px;bottom:26px;z-index:99;width:44px;height:44px;border-radius:50%;background:#fff;border:1px solid #cbd5e1;color:var(--text);font-size:18px;cursor:pointer;display:none;align-items:center;justify-content:center;box-shadow:0 6px 16px rgba(30,41,59,.14);transition:.2s}
.back-top:hover{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ---------- 子页横幅（功能介绍等内页） ---------- */
.page-hero{background:linear-gradient(160deg,#1e3a8a 0%,#172554 55%);padding:48px 0 52px;text-align:center;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;width:480px;height:480px;border-radius:50%;background:radial-gradient(circle,rgba(167,139,250,.22),transparent 65%);top:-220px;right:-140px}
.page-hero::after{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(96,165,250,.22),transparent 65%);bottom:-200px;left:-100px}
.page-hero .container{position:relative;z-index:2}
.page-hero h1{font-size:32px;font-weight:800;color:#fff;margin-bottom:10px;letter-spacing:-.5px}
.page-hero h1 span{background:linear-gradient(90deg,#93c5fd,#c4b5fd);-webkit-background-clip:text;background-clip:text;color:transparent}
.page-hero p{font-size:15.5px;color:rgba(255,255,255,.8);max-width:640px;margin:0 auto}
@media (max-width:560px){.page-hero h1{font-size:26px}}
/* 功能清单卡 */
.card .feat-list{list-style:none;margin-top:4px}
.card .feat-list li{font-size:14px;color:var(--text-sub);padding:3px 0 3px 18px;position:relative}
.card .feat-list li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,#2563eb,#7c3aed)}

/* ---------- 功能介绍页：锚点导航与内容卡 ---------- */
.anchor-nav{position:sticky;top:64px;z-index:90;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.anchor-nav .container{display:flex;gap:10px;overflow-x:auto;padding:10px 24px;scrollbar-width:none;justify-content:center}
.anchor-nav .container::-webkit-scrollbar{display:none}
.anchor-nav .container a:first-child{margin-left:auto}
.anchor-nav .container a:last-child{margin-right:auto}
.anchor-nav a{flex:none;padding:6px 16px;border-radius:999px;font-size:14px;color:var(--text-sub);background:#f1f5f9;transition:.2s}
.anchor-nav a:hover{color:var(--primary);background:#eff6ff}
.media-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px 22px;text-align:center;transition:.25s}
.media-card:hover{transform:translateY(-6px);box-shadow:0 14px 34px rgba(30,41,59,.09);border-color:#bfdbfe}
.media-card img{height:150px;object-fit:contain;margin-bottom:14px}
.media-card h4{font-size:17px;margin-bottom:8px}
.media-card p{font-size:14px;color:var(--text-sub)}
.icon-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px 22px;text-align:center;transition:.25s}
.icon-item:hover{transform:translateY(-4px);box-shadow:0 10px 24px rgba(30,41,59,.07);border-color:#bfdbfe}
.icon-item .icon{width:52px;height:52px;border-radius:12px;background:#eff6ff;display:flex;align-items:center;justify-content:center;font-size:24px;margin:0 auto 12px}
.icon-item h4{font-size:16.5px}
.icon-item p{font-size:14px;color:var(--text-sub);margin-top:6px}
.icon-item .link-row{margin-top:10px;font-size:14px}
.icon-item .link-row a{color:var(--primary);font-weight:600}
.icon-item .link-row a:hover{text-decoration:underline}
.bg-tint{background:#f8fafc}
/* 卡片居中网格：2列/3列内容整体居中 */
.grid-c2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;max-width:660px;margin:0 auto}
.grid-c3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;max-width:920px;margin:0 auto}

/* ---------- 响应式 ---------- */
@media (max-width:900px){
  .grid{grid-template-columns:repeat(2,1fr)}
  .grid-c3{grid-template-columns:repeat(2,minmax(0,1fr));max-width:660px}
  .hero h1{font-size:32px}
  .hero p{font-size:16px}
  .about-grid{grid-template-columns:1fr;gap:32px}
  .promises{grid-template-columns:repeat(2,1fr)}
  .demo-grid{grid-template-columns:1fr;gap:36px}
  .contact-grid{grid-template-columns:1fr}
  .map-card{min-height:300px}
}
@media (max-width:768px){
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .nav-drawer a{display:block;padding:12px 2px;font-size:15px;color:var(--text);border-bottom:1px solid #f1f5f9}
  .nav-drawer a:hover{color:var(--primary)}
  .nav-drawer a.btn{margin-top:14px;text-align:center;border-bottom:none;color:#fff}
  .nav-drawer .btn+.btn{margin-top:10px}
}
@media (max-width:560px){
  .grid{grid-template-columns:1fr}
  .grid-c2,.grid-c3{grid-template-columns:1fr;max-width:420px}
  .nav-links a.hide-m{display:none}
  .hero{padding:44px 0 60px}
  .hero h1{font-size:27px}
  .adv-grid{grid-template-columns:1fr}
  .promises{grid-template-columns:1fr}
  .section-title{font-size:25px}
}