/* pay. landing · light liquid glass
   主色 浅蓝 / 白 · 辅助 橙 · 文案色三级
   ⚠️ 动效只用 transform / opacity；不写 filter:blur 做大面积动画
*/

:root{
  --bg:#F5F9FF;
  --ink1:#0C1726;
  --ink2:#47586D;
  --ink3:#5E6F84;
  --line:rgba(14,32,58,.09);
  --line-2:rgba(14,32,58,.055);
  --blue:#2F7BFF;
  --blue-deep:#1C60E0;
  --blue-soft:rgba(47,123,255,.10);
  --orange:#FF8A3D;
  --orange-deep:#E2680F;
  --orange-soft:rgba(255,138,61,.12);
  --glass:rgba(255,255,255,.56);
  --glass-2:rgba(255,255,255,.74);
  --wline:rgba(255,255,255,.86);
  --shadow:0 14px 40px rgba(20,60,130,.09),0 2px 8px rgba(20,60,130,.05);
  --shadow-sm:0 6px 18px rgba(20,60,130,.07);
  --r:16px; --r-lg:22px; --r-xl:28px;
  --ease:cubic-bezier(.32,.72,0,1);
  --spring:cubic-bezier(.34,1.36,.5,1);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink1);
  font:400 16px/1.6 -apple-system,BlinkMacSystemFont,"SF Pro SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg{display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,p,ul,ol{margin:0;padding:0}
li{list-style:none}
button{font:inherit;color:inherit}
.mono{font-family:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;font-variant-numeric:tabular-nums}
.sprite{position:absolute;width:0;height:0;overflow:hidden}
.ic{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;flex:none}
.wrap{width:100%;max-width:1120px;margin:0 auto;padding:0 clamp(18px,4vw,36px)}

/* ---------- 背景（纯径向渐变，零滤镜） ---------- */
.bg{position:fixed;inset:-60px 0;z-index:-1;overflow:hidden;
  background:linear-gradient(180deg,#FAFDFF 0%,#EEF5FF 46%,#F7FAFF 100%)}
.bg i{position:absolute;display:block;border-radius:50%}
html.perf-full .bg i{will-change:transform}
.bg .b1{width:64vw;height:64vw;left:-16vw;top:-22vw;
  background:radial-gradient(circle at 50% 50%,rgba(116,172,255,.52),rgba(116,172,255,0) 64%);
  animation:drift1 34s ease-in-out infinite alternate}
.bg .b2{width:46vw;height:46vw;right:-12vw;top:6vw;
  background:radial-gradient(circle at 50% 50%,rgba(255,176,120,.34),rgba(255,176,120,0) 66%);
  animation:drift2 42s ease-in-out infinite alternate}
.bg .b3{width:58vw;height:58vw;left:16vw;bottom:-30vw;
  background:radial-gradient(circle at 50% 50%,rgba(168,206,255,.46),rgba(168,206,255,0) 66%);
  animation:drift3 29s ease-in-out infinite alternate}
@keyframes drift1{from{transform:translate3d(0,0,0) scale(1)}to{transform:translate3d(6vw,4vw,0) scale(1.08)}}
@keyframes drift2{from{transform:translate3d(0,0,0) scale(1.04)}to{transform:translate3d(-5vw,6vw,0) scale(.96)}}
@keyframes drift3{from{transform:translate3d(0,0,0) scale(.98)}to{transform:translate3d(-7vw,-5vw,0) scale(1.06)}}
/* 背景漂移默认关闭：玻璃层每帧都要重算背景模糊，弱机上直接掉到 6fps。
   由 site.js 先量一遍帧率，确认有余量（≥55fps）才挂 .perf-full 打开漂移，
   打开后再量一次，塌了就自动撤掉。 */
.bg i{animation:none}
html.perf-full .bg .b1{animation:drift1 38s ease-in-out infinite alternate}
html.perf-full .bg .b2{animation:drift2 46s ease-in-out infinite alternate}
html.perf-full .bg .b3{animation:drift3 32s ease-in-out infinite alternate}

/* ---------- 导航 ---------- */
.nav{
  position:sticky;top:0;z-index:60;display:flex;align-items:center;gap:clamp(10px,2vw,26px);
  height:66px;padding:0 clamp(16px,4vw,36px);
  background:rgba(255,255,255,.58);
  -webkit-backdrop-filter:blur(22px) saturate(180%);
  backdrop-filter:blur(22px) saturate(180%);
  border-bottom:1px solid rgba(255,255,255,.7);
  transition:height .28s var(--ease),box-shadow .28s var(--ease),background .28s var(--ease);
}
.nav.compact{height:56px;box-shadow:0 8px 28px rgba(20,60,130,.07);background:rgba(255,255,255,.72)}
.brand{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:19px;letter-spacing:-.03em}
.brand-dim{color:var(--orange-deep)}
.brand-dot{width:9px;height:9px;border-radius:50%;background:var(--orange);
  box-shadow:0 0 0 4px rgba(255,138,61,.16)}
.nav-links{display:flex;gap:2px;margin-left:10px}
.nav-links a{padding:8px 12px;border-radius:10px;color:var(--ink2);font-size:14.5px;
  transition:background .18s,color .18s}
.nav-links a:hover{background:rgba(47,123,255,.07);color:var(--blue-deep)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:8px}
.menu-btn{display:none}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  height:44px;padding:0 18px;border-radius:14px;border:1px solid transparent;
  font-size:15px;font-weight:600;letter-spacing:-.01em;cursor:pointer;
  transition:transform .16s var(--spring),background .2s,border-color .2s,box-shadow .2s,color .2s;
  white-space:nowrap;
}
.btn:active{transform:scale(.97)}
.btn .ic{width:17px;height:17px;stroke-width:1.9}
.btn-sm{height:38px;padding:0 14px;font-size:14px;border-radius:12px}
.btn-lg{height:50px;padding:0 22px;font-size:15.5px;border-radius:15px}
.btn-block{width:100%}
.btn-pri{color:#fff;background:linear-gradient(180deg,#3B85FF,#1F63E4);
  box-shadow:0 6px 16px rgba(31,99,228,.26),inset 0 1px 0 rgba(255,255,255,.28)}
.btn-pri:hover{background:linear-gradient(180deg,#4A8FFF,#1B5BD6);box-shadow:0 10px 24px rgba(31,99,228,.3),inset 0 1px 0 rgba(255,255,255,.3)}
.btn-acc{color:#fff;background:linear-gradient(180deg,#FF9550,#E2680F);
  box-shadow:0 6px 18px rgba(226,104,15,.26),inset 0 1px 0 rgba(255,255,255,.3)}
.btn-acc:hover{background:linear-gradient(180deg,#FFA163,#DB6009)}
.btn-ghost{color:var(--ink2);background:rgba(255,255,255,.5);border-color:var(--line)}
.btn-ghost:hover{background:rgba(255,255,255,.82);color:var(--ink1)}
.btn-glass{color:var(--ink1);background:rgba(255,255,255,.6);border-color:rgba(255,255,255,.9);
  -webkit-backdrop-filter:blur(16px) saturate(170%);backdrop-filter:blur(16px) saturate(170%);
  box-shadow:0 6px 18px rgba(20,60,130,.07),inset 0 1px 0 rgba(255,255,255,.9)}
.btn-glass:hover{background:rgba(255,255,255,.85)}
.icon-btn{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.55);cursor:pointer;
  transition:background .18s,transform .16s var(--spring)}
.icon-btn:active{transform:scale(.94)}

/* ---------- HERO ---------- */
.hero{display:block;max-width:780px;margin-inline:auto;
  padding:clamp(40px,7vw,86px) clamp(18px,4vw,36px) clamp(32px,5vw,56px)}
.pill{display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 13px;border-radius:999px;
  background:rgba(255,255,255,.66);border:1px solid rgba(255,255,255,.9);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  font-size:12.8px;color:var(--ink2);box-shadow:0 4px 14px rgba(20,60,130,.06)}
.live{width:7px;height:7px;border-radius:50%;background:#20A15A;box-shadow:0 0 0 3px rgba(32,161,90,.16)}
.hero h1{margin:20px 0 0;font-size:clamp(36px,6vw,66px);line-height:1.05;letter-spacing:-.035em;font-weight:700}
.grad{background:linear-gradient(96deg,#1C60E0 0%,#3F87FF 52%,#74AAFF 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent}
.lede{margin-top:18px;max-width:30em;font-size:clamp(15px,1.7vw,17px);line-height:1.72;color:var(--ink2)}
.cta{display:flex;gap:10px;margin-top:28px;flex-wrap:wrap}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:34px;max-width:470px}
.stats li{padding-left:14px;border-left:1px solid var(--line)}
.stats li:first-child{padding-left:0;border-left:0}
.stats b{display:block;font-size:23px;letter-spacing:-.03em;font-variant-numeric:tabular-nums}
.stats b span{font-size:14px;color:var(--orange-deep);margin-left:1px}
.stats em{display:block;font-style:normal;font-size:12px;color:var(--ink3);margin-top:3px}

/* ---------- 收银台演示 ---------- */
.hero-card{display:flex;justify-content:center;perspective:1200px}
.pay-card{position:relative;width:100%;max-width:404px;padding:22px 22px 18px;border-radius:var(--r-xl);
  background:var(--glass);border:1px solid var(--wline);
  -webkit-backdrop-filter:blur(28px) saturate(185%);backdrop-filter:blur(28px) saturate(185%);
  box-shadow:0 24px 60px rgba(20,60,130,.13),0 2px 10px rgba(20,60,130,.05),inset 0 1px 0 rgba(255,255,255,.95)}
/* ⚠️ 玻璃元素上不要挂常驻位移动画：每帧都会逼浏览器重算 backdrop 模糊，
   实测掉到 6fps（软件渲染）。悬浮感交给阴影与进场。 */
.pc-head{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink3)}
.pc-title{font-weight:600;color:var(--ink2);letter-spacing:.02em}
.pc-sec{display:inline-flex;align-items:center;gap:5px;font-size:12px}
.pc-sec .ic{width:13px;height:13px}
.pc-amt{display:flex;align-items:flex-start;gap:2px;margin:16px 0 4px;
  font-size:44px;font-weight:700;letter-spacing:-.04em;line-height:1;font-variant-numeric:tabular-nums}
.pc-amt .cur{font-size:22px;font-weight:600;margin-top:5px;color:var(--ink2)}
.pc-amt .dec{font-size:26px;font-weight:600;color:var(--ink2);margin-top:12px}
.pc-meta{display:flex;justify-content:space-between;gap:10px;font-size:12px;color:var(--ink3);margin-top:12px}
.pc-meta b{color:var(--ink2);font-weight:500;font-size:12px}
.pc-bar{height:3px;border-radius:3px;background:rgba(47,123,255,.12);margin:10px 0 18px;overflow:hidden}
.pc-bar i{display:block;height:100%;width:100%;border-radius:3px;
  background:linear-gradient(90deg,#3B85FF,#FFB27A);transform-origin:left center}
.pc-ch{display:grid;grid-template-columns:1fr 1fr;gap:9px}
.ch{display:flex;align-items:center;justify-content:center;gap:7px;height:48px;border-radius:14px;
  border:1px solid var(--line);background:rgba(255,255,255,.62);font-size:14px;font-weight:500;color:var(--ink2);
  cursor:pointer;transition:border-color .2s,background .2s,box-shadow .2s,transform .16s var(--spring),color .2s}
.ch:active{transform:scale(.985)}
.ch.on{color:var(--blue-deep);border-color:rgba(47,123,255,.5);background:rgba(47,123,255,.09);
  box-shadow:0 0 0 3px rgba(47,123,255,.09),inset 0 1px 0 rgba(255,255,255,.7)}
.ch-ic{width:19px;height:19px}
.btn-pay{margin-top:14px;height:50px;border-radius:15px;font-size:15.5px}
.pc-foot{margin-top:10px;text-align:center;font-size:11.5px;color:var(--ink3)}

/* 支付成功层 */
.pc-ok{position:absolute;inset:0;display:grid;place-content:center;justify-items:center;gap:2px;
  border-radius:var(--r-xl);background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(20px) saturate(180%);backdrop-filter:blur(20px) saturate(180%);
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .26s var(--ease),visibility 0s linear .26s}
.pc-ok.show{opacity:1;visibility:visible;pointer-events:auto;
  transition:opacity .26s var(--ease),visibility 0s}
.ok-ring{width:66px;height:66px;border-radius:50%;display:grid;place-items:center;
  background:rgba(32,161,90,.1);border:1px solid rgba(32,161,90,.28);color:#1B8A4C}
.ok-ic{width:30px;height:30px;stroke-width:2.4;stroke-dasharray:34;stroke-dashoffset:34}
.pc-ok.show .ok-ic{animation:draw .5s .1s var(--ease) forwards}
@keyframes draw{to{stroke-dashoffset:0}}
.ok-title{margin-top:14px;font-size:19px;font-weight:650;letter-spacing:-.02em}
.ok-sub{font-size:12.5px;color:var(--ink3);margin-top:4px}
.stamp{position:absolute;right:20px;bottom:20px;padding:5px 12px;border:1.5px solid rgba(226,104,15,.6);
  border-radius:8px;color:var(--orange-deep);font-size:13px;font-weight:700;letter-spacing:.16em;
  transform:rotate(-9deg) scale(.6);opacity:0;background:rgba(255,138,61,.06)}
.pc-ok.show .stamp{animation:stampIn .46s .34s var(--spring) forwards}
@keyframes stampIn{0%{opacity:0;transform:rotate(-16deg) scale(.6)}60%{opacity:1;transform:rotate(-8deg) scale(1.08)}100%{opacity:.95;transform:rotate(-9deg) scale(1)}}

/* ---------- 通用区块 ---------- */
.sec{padding:clamp(46px,7vw,88px) clamp(18px,4vw,36px)}
.sec-h{max-width:640px;margin-bottom:clamp(24px,4vw,40px)}
.sec-h h2{font-size:clamp(25px,3.4vw,37px);line-height:1.18;letter-spacing:-.03em;font-weight:700}
.sec-h p{margin-top:11px;color:var(--ink2);font-size:15.5px;line-height:1.7}
.card{position:relative;padding:24px;border-radius:var(--r-lg);background:var(--glass);
  border:1px solid var(--wline);-webkit-backdrop-filter:blur(24px) saturate(180%);
  backdrop-filter:blur(24px) saturate(180%);
  box-shadow:var(--shadow-sm),inset 0 1px 0 rgba(255,255,255,.9);
  transition:transform .34s var(--ease),box-shadow .34s var(--ease)}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.card-ic{display:grid;place-items:center;width:42px;height:42px;border-radius:13px;
  background:var(--blue-soft);color:var(--blue-deep);margin-bottom:16px}
.card h3{font-size:17.5px;line-height:1.4;letter-spacing:-.02em;font-weight:650}
.card p{margin-top:9px;font-size:13.8px;line-height:1.72;color:var(--ink2)}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;
  padding:1px 5px;border-radius:5px;background:rgba(47,123,255,.08);color:var(--blue-deep)}
.grid{display:grid;gap:14px}
.g4{grid-template-columns:repeat(4,1fr)}

/* ---------- 定价 ---------- */
.price-wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:16px;align-items:start}
.price-card{position:relative;overflow:hidden;padding:30px;border-radius:var(--r-xl);background:var(--glass-2);
  border:1px solid var(--wline);-webkit-backdrop-filter:blur(26px) saturate(185%);
  backdrop-filter:blur(26px) saturate(185%);box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.95)}
.price-card::after{content:"";position:absolute;width:280px;height:280px;right:-96px;top:-110px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,150,90,.22),rgba(255,150,90,0) 68%);pointer-events:none}
.price-top{display:flex;align-items:baseline;justify-content:space-between;gap:10px}
.price-label{font-size:13px;letter-spacing:.08em;color:var(--ink3);text-transform:uppercase}
.price-num{font-size:clamp(52px,8vw,74px);font-weight:700;line-height:1;letter-spacing:-.05em;
  font-variant-numeric:tabular-nums;color:var(--ink1)}
.price-num span{font-size:26px;font-weight:600;color:var(--orange-deep);margin-left:3px}
.price-list{margin:22px 0 24px;display:grid;gap:11px}
.price-list li{display:flex;align-items:flex-start;gap:9px;font-size:14px;color:var(--ink2)}
.price-list .ic{width:17px;height:17px;margin-top:2px;color:#1B8A4C;stroke-width:2.2}
.price-note{margin-top:12px;text-align:center;font-size:12px;color:var(--ink3)}
.price-side{display:grid;gap:14px}
.mini-card{display:flex;gap:13px;padding:19px;border-radius:var(--r);background:rgba(255,255,255,.5);
  border:1px solid var(--wline);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  box-shadow:var(--shadow-sm)}
.mini-card .ic{width:19px;height:19px;color:var(--blue-deep);margin-top:2px}
.mini-card b{display:block;font-size:14.5px;letter-spacing:-.01em}
.mini-card p{margin-top:5px;font-size:13px;line-height:1.65;color:var(--ink2)}

/* ---------- 接入步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;counter-reset:s}
.step{position:relative;padding:24px;border-radius:var(--r-lg);background:rgba(255,255,255,.46);
  border:1px solid var(--wline);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);
  box-shadow:var(--shadow-sm)}
.step-n{display:inline-block;font-family:ui-monospace,Menlo,monospace;font-size:12px;letter-spacing:.12em;
  color:var(--blue-deep);background:var(--blue-soft);padding:3px 9px;border-radius:7px}
.step h3{margin-top:14px;font-size:16.5px;letter-spacing:-.02em;font-weight:650}
.step p{margin-top:8px;font-size:13.8px;line-height:1.72;color:var(--ink2)}

/* ---------- 代码 ---------- */
.code-card{border-radius:var(--r-lg);overflow:hidden;background:#0B1A2E;
  box-shadow:0 24px 50px rgba(11,26,46,.24),inset 0 1px 0 rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.08)}
.code-tabs{display:flex;align-items:center;gap:4px;padding:9px 12px;border-bottom:1px solid rgba(255,255,255,.07);
  background:rgba(255,255,255,.03)}
.tab{padding:7px 12px;border-radius:8px;border:0;background:none;color:#8CA0BC;font-size:13px;cursor:pointer;
  transition:background .18s,color .18s}
.tab:hover{background:rgba(255,255,255,.06);color:#CFDDEE}
.tab.on{background:rgba(47,123,255,.18);color:#DCE8FA}
.copy-btn{margin-left:auto;display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 10px;
  border-radius:8px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.04);
  color:#9FB2CA;font-size:12.5px;cursor:pointer;transition:background .18s,color .18s,transform .16s}
.copy-btn:hover{background:rgba(255,255,255,.09);color:#E4EDF9}
.copy-btn:active{transform:scale(.96)}
.copy-btn .ic{width:14px;height:14px}
.code{margin:0;padding:20px 20px 24px;overflow-x:auto;font-size:13px;line-height:1.8;
  font-family:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;color:#C5D6EC}
.code code{background:none;padding:0;color:inherit;font-size:inherit}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:10px;max-width:820px}
.faq details{padding:17px 20px;border-radius:var(--r);background:rgba(255,255,255,.5);
  border:1px solid var(--wline);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  box-shadow:0 4px 14px rgba(20,60,130,.04);transition:background .2s}
.faq details:hover{background:rgba(255,255,255,.72)}
.faq summary{cursor:pointer;font-size:15px;font-weight:550;letter-spacing:-.01em;
  display:flex;align-items:center;justify-content:space-between;gap:12px;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";width:8px;height:8px;flex:none;border-right:1.6px solid var(--ink3);
  border-bottom:1.6px solid var(--ink3);transform:rotate(45deg) translateY(-2px);transition:transform .24s var(--ease)}
.faq details[open] summary::after{transform:rotate(-135deg) translateY(-2px)}
.faq p{margin-top:10px;font-size:13.8px;line-height:1.78;color:var(--ink2)}

/* ---------- CTA ---------- */
.cta-card{position:relative;overflow:hidden;text-align:center;padding:clamp(36px,6vw,64px) 24px;
  border-radius:var(--r-xl);background:var(--glass-2);border:1px solid var(--wline);
  -webkit-backdrop-filter:blur(28px) saturate(185%);backdrop-filter:blur(28px) saturate(185%);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.95)}
.cta-card::before{content:"";position:absolute;width:520px;height:520px;left:50%;top:-330px;margin-left:-260px;
  border-radius:50%;background:radial-gradient(circle,rgba(47,123,255,.18),rgba(47,123,255,0) 66%);pointer-events:none}
.cta-card h2{font-size:clamp(24px,3.4vw,34px);letter-spacing:-.03em;line-height:1.25;font-weight:700}
.cta-card p{margin-top:11px;color:var(--ink2);font-size:15px}
.cta-row{display:flex;gap:10px;justify-content:center;margin-top:26px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.foot{display:flex;align-items:flex-start;justify-content:space-between;gap:24px;flex-wrap:wrap;
  padding:38px clamp(18px,4vw,36px) 46px;border-top:1px solid var(--line-2);margin-top:20px}
.foot-l p{margin-top:8px;font-size:12.5px;color:var(--ink3)}
.foot-r{display:flex;align-items:center;gap:18px;flex-wrap:wrap;font-size:13px;color:var(--ink2)}
.foot-r a:hover{color:var(--blue-deep)}
.copy-note{color:var(--ink3)}

/* ---------- 抽屉 ---------- */
.sheet-mask{position:fixed;inset:0;z-index:70;background:rgba(12,23,38,.28);
  -webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);opacity:0;transition:opacity .28s var(--ease)}
.sheet-mask.show{opacity:1}
.sheet{position:fixed;top:0;right:0;bottom:0;z-index:80;width:min(86vw,320px);
  padding:16px 18px calc(18px + env(safe-area-inset-bottom));
  display:flex;flex-direction:column;gap:6px;
  background:rgba(255,255,255,.86);-webkit-backdrop-filter:blur(30px) saturate(185%);
  backdrop-filter:blur(30px) saturate(185%);border-left:1px solid rgba(255,255,255,.9);
  box-shadow:-16px 0 50px rgba(20,60,130,.14);
  transform:translateX(100%);transition:transform .32s var(--ease)}
.sheet.show{transform:translateX(0)}
.sheet-h{display:flex;align-items:center;justify-content:space-between;padding-bottom:12px;
  border-bottom:1px solid var(--line-2);margin-bottom:6px}
.sheet-nav{display:grid}
.sheet-nav a{padding:13px 10px;border-radius:12px;color:var(--ink1);font-size:15.5px;font-weight:500;
  transition:background .18s}
.sheet-nav a:hover{background:rgba(47,123,255,.07)}
.sheet .btn-block{margin-top:auto}

/* ---------- 入场 ---------- */
/* 基础态必须是「可见终态」：滚动时间轴用 backwards 填充，
   进视口前显示 from(0)，走完 range 后回到基础态(1)。
   若基础态写成 0，滚过去的元素会永久隐身（踩过）。 */
.rv{opacity:1;transform:none}
@keyframes rvIn{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
@supports (animation-timeline:view()){
  .rv{animation:rvIn linear backwards;animation-timeline:view();animation-range:entry 2% cover 30%}
}
@supports not (animation-timeline:view()){
  .rv{opacity:0;transform:translateY(16px);
    transition:opacity .62s cubic-bezier(.22,.61,.36,1),transform .62s cubic-bezier(.22,.61,.36,1)}
  .rv.in{opacity:1;transform:none}
}

/* ---------- 响应式 ---------- */
@media (max-width:980px){
  .hero{grid-template-columns:1fr;gap:38px;padding-top:clamp(28px,6vw,50px)}
  .hero-card{order:2}
  .pay-card{max-width:430px}
  .g4{grid-template-columns:1fr 1fr}
  .price-wrap{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
}
@media (max-width:900px){
  .nav-links{display:none}
  .menu-btn{display:inline-grid}
  .hide-sm{display:none}
}
@media (max-width:680px){
  .nav{height:58px}
  .nav.compact{height:52px}
  .btn-sm{height:40px;padding:0 15px}
  /* 到账流程在窄屏改为竖排时间轴 */
  .flow-steps{grid-template-columns:1fr;gap:20px}
  .flow-track{display:none}
  .flow-step{padding-top:0;padding-left:24px;border-left:1px solid rgba(47,123,255,.18)}
  .flow-dot{top:3px;left:-6.5px}
  .flow-step em{position:static;display:inline-block;margin:0 0 6px}
  .flow-cards{grid-template-columns:1fr}
  .row{flex-wrap:wrap}
  .row em{flex:1 1 100%;min-width:0;text-align:left;margin-top:2px}
  .hero h1{font-size:clamp(32px,8.4vw,44px)}
  .stats{grid-template-columns:1fr 1fr;gap:14px 8px}
  .stats li:nth-child(3){padding-left:0;border-left:0}
  .g4{grid-template-columns:1fr}
  .cta .btn{flex:1 1 auto}
  .card{backdrop-filter:none;-webkit-backdrop-filter:none;background:rgba(255,255,255,.9)}
  .mini-card,.step,.faq details,.btn-glass{backdrop-filter:none;-webkit-backdrop-filter:none;
    background:rgba(255,255,255,.88)}
  .pay-card{backdrop-filter:blur(16px) saturate(170%);-webkit-backdrop-filter:blur(16px) saturate(170%)}
  .price-card,.cta-card{backdrop-filter:blur(18px) saturate(175%);-webkit-backdrop-filter:blur(18px) saturate(175%)}
  .bg i{animation:none}
  .code{font-size:12.2px}
  .foot{flex-direction:column;gap:18px}
}
@media (max-width:420px){
  .pc-amt{font-size:38px}
  .stats b{font-size:20px}
}

/* ---------- 顶部滚动进度 ---------- */
.prog{position:fixed;top:0;left:0;right:0;height:2px;z-index:70;pointer-events:none}
.prog i{display:block;height:100%;width:100%;transform-origin:left center;transform:scaleX(0);
  background:linear-gradient(90deg,#2F7BFF,#7FB2FF 60%,#FF9A52)}

/* ---------- 首屏分段入场（只作用于文本与按钮，不碰玻璃层） ---------- */
.rise{opacity:0;transform:translateY(18px);
  animation:riseIn .8s cubic-bezier(.22,.61,.36,1) forwards}
.rise.d1{animation-delay:.08s}
.rise.d2{animation-delay:.16s}
.rise.d3{animation-delay:.24s}
.rise.d4{animation-delay:.32s}
@keyframes riseIn{to{opacity:1;transform:none}}

/* ---------- 小标题前的橙色短线 ---------- */
.hl{display:inline-block;width:22px;height:3px;border-radius:3px;vertical-align:middle;margin-right:10px;
  background:linear-gradient(90deg,var(--orange),#FFC69E)}

/* ---------- 到账流程 ---------- */
.flow{position:relative;margin:6px 0 26px}
.flow-track{position:absolute;left:0;right:0;top:5px;height:2px;border-radius:2px;
  background:rgba(47,123,255,.16);overflow:hidden}
.flow-track i{position:absolute;top:0;bottom:0;width:38%;border-radius:2px;will-change:transform;
  background:linear-gradient(90deg,rgba(47,123,255,0),#3B85FF 45%,#FF9A52);
  transform:translateX(-110%);animation:sweep 4.6s cubic-bezier(.42,0,.2,1) infinite}
@keyframes sweep{0%{transform:translateX(-110%)}58%{transform:translateX(276%)}100%{transform:translateX(276%)}}
.flow-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.flow-step{position:relative;padding-top:26px}
.flow-dot{position:absolute;top:0;left:0;width:12px;height:12px;border-radius:50%;background:#fff;
  border:2px solid var(--blue);box-shadow:0 0 0 4px rgba(47,123,255,.10)}
.flow-step em{position:absolute;top:-4px;right:0;font-style:normal;font-size:11.5px;color:var(--blue-deep);
  background:var(--blue-soft);padding:2px 7px;border-radius:6px;font-variant-numeric:tabular-nums}
.flow-step b{display:block;font-size:15.5px;letter-spacing:-.01em}
.flow-step p{margin-top:6px;font-size:13.5px;line-height:1.62;color:var(--ink2)}

.flow-cards{display:grid;grid-template-columns:1.05fr .95fr;gap:14px}
.fcard{padding:24px;border-radius:var(--r-lg);background:rgba(255,255,255,.56);
  border:1px solid var(--wline);box-shadow:var(--shadow-sm)}
.fcard h3{font-size:16px;letter-spacing:-.02em}
.rows{margin-top:14px;display:grid;gap:8px}
.row{display:flex;align-items:center;gap:10px;padding:11px 13px;border-radius:12px;
  background:rgba(255,255,255,.72);border:1px solid var(--line-2)}
.row-ic{display:grid;place-items:center;width:30px;height:30px;border-radius:9px;
  background:var(--blue-soft);color:var(--blue-deep);flex:none}
.row-ic .ic{width:16px;height:16px}
.row b{font-size:14px;font-weight:600}
.row i{font-style:normal;margin-left:auto;font-size:14px;font-weight:650;color:var(--orange-deep);
  font-variant-numeric:tabular-nums}
.row em{font-style:normal;font-size:12px;color:var(--ink3);min-width:98px;text-align:right;
  font-variant-numeric:tabular-nums}
.fc-note{margin-top:12px;font-size:12px;color:var(--ink3)}
.fc-list{margin-top:14px;display:grid;gap:11px}
.fc-list li{display:flex;gap:9px;font-size:13.5px;line-height:1.62;color:var(--ink2)}
.fc-list .ic{width:16px;height:16px;color:var(--blue-deep);margin-top:2px;flex:none}

/* ---------- 图标描边重绘（悬停） ---------- */
.card-ic .ic > *{stroke-dasharray:64;stroke-dashoffset:0}
.card:hover .card-ic .ic > *{animation:drawIcon .72s var(--ease) both}
@keyframes drawIcon{0%{stroke-dashoffset:64}100%{stroke-dashoffset:0}}

/* ---------- 成功态光环 / 金额翻动 ---------- */
.ok-ring{position:relative}
.ok-ring::after{content:"";position:absolute;inset:-2px;border-radius:50%;
  border:1.5px solid rgba(32,161,90,.34);opacity:0}
.pc-ok.show .ok-ring{animation:ringPop .52s var(--spring)}
@keyframes ringPop{0%{transform:scale(.62)}62%{transform:scale(1.07)}100%{transform:scale(1)}}
.pc-ok.show .ok-ring::after{animation:halo .95s .18s ease-out}
@keyframes halo{0%{opacity:.85;transform:scale(.72)}100%{opacity:0;transform:scale(1.7)}}
.pc-amt .num{display:inline-block}
.pc-amt.flip .num{animation:numFlip .52s var(--spring)}
@keyframes numFlip{0%{transform:translateY(7px) scale(.95);opacity:.35}100%{transform:none;opacity:1}}

/* ---------- 导航当前区块 ---------- */
.nav-links a.on{color:var(--blue-deep);background:rgba(47,123,255,.08)}

/* ---------- 性能降级 ---------- */
html.perf-lite .bg i{animation:none}
html.perf-lite .flow-track i,html.perf-lite .card:hover .card-ic .ic > *{animation:none}
html.perf-lite .card,html.perf-lite .price-card,html.perf-lite .cta-card,html.perf-lite .mini-card,
html.perf-lite .step,html.perf-lite .faq details{
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
html.perf-lite .live{animation:none}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion:reduce){
  .rv,.hero .rv,.rise{opacity:1!important;transform:none!important;animation:none!important}
  .bg i,.flow-track i{animation:none!important}
  .pc-ok,.stamp,.sheet,.sheet-mask{transition:none!important}
  .pc-ok.show .ok-ic{stroke-dashoffset:0;animation:none!important}
  .pc-ok.show .stamp{opacity:.95;transform:rotate(-9deg) scale(1);animation:none!important}
  .pc-ok.show .ok-ring,.pc-ok.show .ok-ring::after{animation:none!important}
  .card:hover .card-ic .ic > *{animation:none!important}
}

/* ---------- 窄屏补充（必须放在文件末尾：文件中段的同名规则会被后面的基础规则覆盖） ---------- */
@media (max-width:680px){
  .flow-steps{grid-template-columns:1fr;gap:20px}
  .flow-track{display:none}
  .flow-step{padding-top:0;padding-left:24px;border-left:1px solid rgba(47,123,255,.18)}
  .flow-dot{top:3px;left:-6.5px}
  .flow-step em{position:static;display:inline-block;margin:0 0 6px}
  .flow-cards{grid-template-columns:1fr}
  .row{flex-wrap:wrap}
  .row em{flex:1 1 100%;min-width:0;text-align:left;margin-top:2px}
  .hl{width:16px;margin-right:8px}
  .stats li:nth-child(4){padding-left:0;border-left:0}
}

/* ---------- 玻璃强度统一（只改桌面；大面积容器降一档，浮层保持） ---------- */
@media (min-width:681px){
  .card{-webkit-backdrop-filter:blur(18px) saturate(180%);backdrop-filter:blur(18px) saturate(180%)}
  .price-card,.cta-card{-webkit-backdrop-filter:blur(20px) saturate(185%);backdrop-filter:blur(20px) saturate(185%)}
  .mini-card,.faq details{-webkit-backdrop-filter:blur(14px) saturate(175%);backdrop-filter:blur(14px) saturate(175%)}
  .nav{-webkit-backdrop-filter:blur(18px) saturate(180%);backdrop-filter:blur(18px) saturate(180%)}
  .pay-card{-webkit-backdrop-filter:blur(24px) saturate(185%);backdrop-filter:blur(24px) saturate(185%)}
}
/* 降级档连导航条也改实色：整条横向玻璃是最贵的一块 */
html.perf-lite .nav{-webkit-backdrop-filter:none;backdrop-filter:none;background:rgba(255,255,255,.93)}