/* ===== 小川聚合支付 · 首页样式 ===== */
:root{
  --brand:#2f6bff;
  --brand-2:#1b3fd8;
  --ink:#0d1730;
  --ink-2:#4b5b76;
  --ink-3:#7d8aa3;
  --line:rgba(16,32,64,.08);
  --bg:#f6f8fc;
  --card:#ffffff;
  --radius:20px;
  --shadow-s:0 2px 8px rgba(20,40,90,.05);
  --shadow-m:0 10px 30px rgba(20,40,90,.08);
  --shadow-l:0 24px 60px rgba(20,40,90,.12);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);background:var(--bg);
  -webkit-font-smoothing:antialiased;line-height:1.65;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{width:min(1140px,calc(100% - 48px));margin:0 auto}
.grad-text{
  background:linear-gradient(100deg,#2f6bff 5%,#5b8bff 46%,#2648c8 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}

/* ---------- 导航 ---------- */
.nav{
  position:sticky;top:0;z-index:80;
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  background:rgba(255,255,255,.72);
  border-bottom:1px solid transparent;
  transition:border-color .3s var(--ease), box-shadow .3s var(--ease), background .3s var(--ease);
}
.nav.stuck{border-bottom-color:var(--line);box-shadow:0 6px 24px rgba(20,40,90,.06);background:rgba(255,255,255,.9)}
.nav-in{display:flex;align-items:center;height:70px;gap:34px}
.brand{display:flex;align-items:center;font-weight:700;font-size:19px;letter-spacing:.2px}
.brand .dot{
  width:32px;height:32px;border-radius:10px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 6px 16px rgba(47,107,255,.32);
  display:grid;place-items:center;color:#fff;font-size:15px;font-weight:800;
}
.nav-links{display:flex;gap:28px;margin-left:auto;font-size:15px;color:var(--ink-2)}
.nav-links a{position:relative;padding:6px 0;transition:color .2s var(--ease)}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));transition:width .28s var(--ease);
}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{width:100%}
.nav-act{display:flex;gap:12px;align-items:center}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:12px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),color .25s var(--ease);
}
.btn:active{transform:translateY(1px) scale(.99)}
.btn-primary{
  color:#fff;background:linear-gradient(180deg,#3f7bff,#2f6bff);
  box-shadow:0 8px 20px rgba(47,107,255,.26);
}
.btn-primary:hover{background:linear-gradient(180deg,#3671f5,#2459e6);box-shadow:0 12px 26px rgba(47,107,255,.3)}
.btn-ghost{color:var(--ink);background:#fff;border-color:var(--line);box-shadow:var(--shadow-s)}
.btn-ghost:hover{transform:translateY(-2px);box-shadow:var(--shadow-m)}
.btn-lg{height:52px;padding:0 30px;font-size:16px;border-radius:14px}
.nav-burger{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;place-items:center}
.nav-burger span{display:block;width:16px;height:1.6px;background:var(--ink);border-radius:2px;position:relative}
.nav-burger span::before,.nav-burger span::after{content:"";position:absolute;left:0;width:16px;height:1.6px;background:var(--ink);border-radius:2px}
.nav-burger span::before{top:-5px}.nav-burger span::after{top:5px}

/* ---------- Hero ---------- */
.hero{position:relative;padding:86px 0 70px;overflow:hidden}
.hero::before,.hero::after{
  content:"";position:absolute;border-radius:50%;filter:blur(70px);opacity:.55;z-index:0;
}
.hero::before{width:520px;height:520px;background:rgba(47,107,255,.20);top:-180px;right:-80px}
.hero::after{width:420px;height:420px;background:rgba(47,107,255,.16);bottom:-200px;left:-120px}
.hero-in{position:relative;z-index:1;display:grid;grid-template-columns:1.06fr .94fr;gap:56px;align-items:center}
.pill{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:999px;
  background:rgba(47,107,255,.08);color:var(--brand);font-size:13px;font-weight:600;
  border:1px solid rgba(47,107,255,.14);margin-bottom:22px;
}
.pill i{width:6px;height:6px;border-radius:50%;background:var(--brand-2);box-shadow:0 0 0 4px rgba(47,107,255,.16)}
.hero h1{font-size:clamp(30px,4.1vw,50px);line-height:1.18;letter-spacing:-.6px;font-weight:800}
.hero p.lead{margin-top:20px;font-size:17px;color:var(--ink-2);max-width:520px}
.hero-btns{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
.hero-note{margin-top:18px;font-size:13px;color:var(--ink-3);display:flex;gap:18px;flex-wrap:wrap}
.hero-note span{display:flex;align-items:center;gap:6px}
.hero-note svg{width:14px;height:14px;color:var(--brand-2)}

/* hero 右侧卡片 */
.mock{
  position:relative;background:rgba(255,255,255,.86);border:1px solid rgba(255,255,255,.9);
  border-radius:26px;box-shadow:var(--shadow-l);padding:22px;backdrop-filter:blur(10px);
  transform:perspective(1200px) rotateY(-6deg) rotateX(3deg);
  transition:transform .6s var(--ease);
}
.mock:hover{transform:perspective(1200px) rotateY(-2deg) rotateX(1deg) translateY(-4px)}
.mock-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.mock-top b{font-size:14px;font-weight:700}
.mock-top .tag{font-size:12px;color:#0a8f4e;background:rgba(10,180,110,.10);padding:4px 10px;border-radius:999px;font-weight:600}
.mock-amt{font-size:34px;font-weight:800;letter-spacing:-1px;line-height:1.2}
.mock-amt small{font-size:14px;font-weight:600;color:var(--ink-3);letter-spacing:0}
.mock-sub{font-size:12.5px;color:var(--ink-3);margin-top:4px}
.spark{margin:18px 0 8px;height:78px;width:100%}
.mock-rows{display:grid;gap:8px}
.mrow{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 12px;border-radius:12px;background:rgba(246,248,252,.9);
  font-size:13px;transition:background .25s var(--ease),transform .25s var(--ease);
}
.mrow:hover{background:#eef3ff;transform:translateX(2px)}
.mrow .l{display:flex;align-items:center;gap:9px;color:var(--ink-2)}
.mrow .badge{width:26px;height:26px;border-radius:9px;display:grid;place-items:center;color:#fff;font-size:11px;font-weight:700}
.mrow .badge.alipay{background:linear-gradient(135deg,#1677ff,#3fa2ff)}
.mrow .badge.wx{background:linear-gradient(135deg,#07c160,#22d67a)}
.mrow .badge.qq{background:linear-gradient(135deg,#3d9bff,#0a6bff)}
.mrow .ok{color:#0a8f4e;font-weight:600}

/* ---------- 数据条 ---------- */
.stats{padding:8px 0 26px}
.stats-in{
  display:grid;grid-template-columns:repeat(4,1fr);gap:8px;
  background:#fff;border-radius:var(--radius);box-shadow:var(--shadow-m);
  padding:30px 10px;border:1px solid rgba(16,32,64,.04);
}
.stat{text-align:center;position:relative}
.stat + .stat::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);height:36px;width:1px;background:var(--line)}
.stat b{display:block;font-size:26px;font-weight:800;letter-spacing:-.5px}
.stat span{font-size:13.5px;color:var(--ink-3)}

/* ---------- 通用区块 ---------- */
section.block{padding:78px 0}
.sec-head{text-align:center;max-width:640px;margin:0 auto 46px}
.sec-head .kicker{font-size:13px;font-weight:700;letter-spacing:2px;color:var(--brand);text-transform:uppercase}
.sec-head h2{font-size:clamp(24px,3vw,34px);font-weight:800;letter-spacing:-.4px;margin:12px 0 12px}
.sec-head p{color:var(--ink-2);font-size:15.5px}

.cards{display:grid;gap:20px}
.cards.c4{grid-template-columns:repeat(4,1fr)}
.cards.c3{grid-template-columns:repeat(3,1fr)}
.card{
  background:var(--card);border:1px solid rgba(16,32,64,.055);border-radius:var(--radius);
  padding:26px 22px;box-shadow:var(--shadow-s);
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-m);border-color:rgba(47,107,255,.16)}
.card .ico{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;margin-bottom:16px;
  background:linear-gradient(135deg,rgba(47,107,255,.12),rgba(27,63,216,.10));color:var(--brand);
}
.card .ico svg{width:22px;height:22px}
.card h3{font-size:16.5px;font-weight:700;margin-bottom:8px}
.card p{font-size:14px;color:var(--ink-2);line-height:1.7}

/* 通道 */
.chans{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.chan{
  background:#fff;border:1px solid rgba(16,32,64,.055);border-radius:16px;padding:22px 12px;
  text-align:center;box-shadow:var(--shadow-s);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.chan:hover{transform:translateY(-5px);box-shadow:var(--shadow-m)}
.chan .logo{width:42px;height:42px;border-radius:12px;margin:0 auto 12px;display:grid;place-items:center;color:#fff;font-weight:800;font-size:15px}
.chan b{font-size:14px;font-weight:700;display:block}
.chan span{font-size:12.5px;color:var(--ink-3)}
.l-alipay{background:linear-gradient(135deg,#1677ff,#4aa3ff)}
.l-wx{background:linear-gradient(135deg,#07c160,#33d97f)}
.l-qq{background:linear-gradient(135deg,#12b7f5,#0a7cff)}
.l-union{background:linear-gradient(135deg,#e94e77,#d3313f)}
.l-bank{background:linear-gradient(135deg,#5b6bff,#8b5cf6)}
.l-usdt{background:linear-gradient(135deg,#26a17b,#0f9e76)}

/* 费率 / 模式 */
.fee{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.fee-box{background:#fff;border-radius:var(--radius);padding:30px;box-shadow:var(--shadow-s);border:1px solid rgba(16,32,64,.055)}
.fee-box .tagline{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--brand);background:rgba(47,107,255,.08);padding:5px 12px;border-radius:999px;margin-bottom:16px}
.fee-box h3{font-size:19px;font-weight:800;margin-bottom:10px}
.fee-box p{font-size:14.5px;color:var(--ink-2)}
.fee-list{margin-top:18px;display:grid;gap:12px}
.fee-list div{display:flex;justify-content:space-between;gap:12px;font-size:14px;padding-bottom:12px;border-bottom:1px dashed var(--line)}
.fee-list div:last-child{border-bottom:0;padding-bottom:0}
.fee-list span{color:var(--ink-3)}
.fee-list b{font-weight:700}

/* 流程 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:s}
.step{background:#fff;border-radius:18px;padding:26px 22px;box-shadow:var(--shadow-s);border:1px solid rgba(16,32,64,.055);position:relative;transition:transform .3s var(--ease),box-shadow .3s var(--ease)}
.step:hover{transform:translateY(-5px);box-shadow:var(--shadow-m)}
.step .n{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;font-weight:800;font-size:14px;color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));margin-bottom:14px;
  box-shadow:0 8px 18px rgba(47,107,255,.25);
}
.step h3{font-size:15.5px;margin-bottom:6px;font-weight:700}
.step p{font-size:13.5px;color:var(--ink-2)}

/* FAQ */
.faq{max-width:820px;margin:0 auto;display:grid;gap:12px}
.q{background:#fff;border:1px solid rgba(16,32,64,.06);border-radius:14px;box-shadow:var(--shadow-s);overflow:hidden;transition:box-shadow .3s var(--ease),border-color .3s var(--ease)}
.q:hover{border-color:rgba(47,107,255,.18)}
.q.open{box-shadow:var(--shadow-m);border-color:rgba(47,107,255,.22)}
.q>button{
  width:100%;background:none;border:0;cursor:pointer;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:15.5px;font-weight:600;color:var(--ink);font-family:inherit;
}
.q>button .plus{width:22px;height:22px;flex:0 0 22px;border-radius:50%;background:rgba(47,107,255,.1);color:var(--brand);display:grid;place-items:center;font-size:15px;line-height:1;transition:transform .35s var(--ease),background .3s}
.q.open>button .plus{transform:rotate(45deg);background:var(--brand);color:#fff}
.a{max-height:0;overflow:hidden;transition:max-height .4s var(--ease)}
.a p{padding:0 20px 18px;font-size:14.5px;color:var(--ink-2);line-height:1.8}
.a a{color:var(--brand);font-weight:600}

/* CTA */
.cta{
  margin:20px 0 0;border-radius:28px;padding:60px 40px;text-align:center;color:#fff;position:relative;overflow:hidden;
  background:linear-gradient(120deg,#2f6bff 0%,#3f7bff 42%,#1b3fd8 100%);
  box-shadow:0 30px 70px rgba(47,107,255,.28);
}
.cta::after{content:"";position:absolute;inset:-40% -10% auto auto;width:520px;height:520px;background:radial-gradient(circle,rgba(255,255,255,.28),transparent 62%);pointer-events:none}
.cta h2{font-size:clamp(24px,3vw,34px);font-weight:800;letter-spacing:-.4px;position:relative}
.cta p{margin:12px auto 0;max-width:520px;color:rgba(255,255,255,.9);font-size:15.5px;position:relative}
.cta .hero-btns{justify-content:center;margin-top:30px;position:relative}
.cta .btn-ghost{background:transparent;border-color:rgba(255,255,255,.6);color:#fff}
.cta .btn-ghost:hover{background:rgba(255,255,255,.16);border-color:#fff}

.cta .btn-primary{background:#fff;color:var(--brand);box-shadow:0 14px 30px rgba(0,0,0,.14)}

/* 页脚 */
footer{margin-top:70px;background:#0d1730;color:#c8d3e6;padding:56px 0 28px}
.f-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:34px;padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.08)}
.f-brand{display:flex;align-items:center;font-weight:700;font-size:18px;color:#fff;margin-bottom:14px}
.f-brand .dot{width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--brand),var(--brand-2));display:grid;place-items:center;color:#fff;font-size:14px;font-weight:800}
footer p{font-size:13.5px;color:#93a3bd;line-height:1.8}
footer h4{font-size:14px;color:#fff;margin-bottom:14px;font-weight:700}
footer ul{list-style:none;display:grid;gap:10px;font-size:13.5px}
footer ul a{color:#93a3bd;transition:color .2s}
footer ul a:hover{color:#fff}
.f-bottom{padding-top:22px;text-align:center;font-size:12.5px;color:#6d7f9c}
.f-bottom a{color:#93a3bd}

/* 动效 */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media(max-width:980px){
  .hero-in{grid-template-columns:1fr;gap:40px}
  .mock{transform:none}
  .cards.c4{grid-template-columns:repeat(2,1fr)}
  .cards.c3{grid-template-columns:1fr}
  .chans{grid-template-columns:repeat(3,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .fee{grid-template-columns:1fr}
  .f-top{grid-template-columns:1fr 1fr}
  .nav-links{display:none}
  .nav-burger{display:grid;margin-left:auto}
  .hero{padding:56px 0 46px}
  section.block{padding:56px 0}
}
@media(max-width:640px){
  .wrap{width:calc(100% - 32px)}
  .stats-in{grid-template-columns:repeat(2,1fr);gap:18px 0}
  .stat:nth-child(3)::before{display:none}
  .cards.c4{grid-template-columns:1fr}
  .chans{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr}
  .cta{padding:44px 22px;border-radius:22px}
  .nav-act .btn-ghost{display:none}
  .f-top{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* ---------- 官方通道图标 ---------- */
.mrow .badge{color:transparent;overflow:hidden;padding:0;display:grid;place-items:center}
.mrow .badge img{width:64%;height:64%;object-fit:contain;display:block}
.mrow .badge.alipay{background:#1677FF}
.mrow .badge.wx{background:#07C160}
.mrow .badge.qq{background:#fff;box-shadow:inset 0 0 0 1px #e9eef7}
.mrow .badge.qq img{width:84%;height:84%}

.chan .logo{color:transparent;overflow:hidden;padding:0;display:grid;place-items:center;border-radius:14px}
.chan .logo img{width:56%;height:56%;object-fit:contain;display:block}
.chan .logo.l-alipay{background:#1677FF}
.chan .logo.l-wx{background:#07C160}
.chan .logo.l-qq{background:#fff;box-shadow:inset 0 0 0 1px #e9eef7}
.chan .logo.l-qq img{width:66%;height:66%}
.chan .logo.l-union{background:#fff;box-shadow:inset 0 0 0 1px #e9eef7}
.chan .logo.l-union img{width:76%;height:76%}
.chan .logo.l-bank{background:#fff;box-shadow:inset 0 0 0 1px #e9eef7}
.chan .logo.l-bank img{width:68%;height:68%}
.chan .logo.l-usdt{background:transparent;box-shadow:none}
.chan .logo.l-usdt img{width:100%;height:100%}