/* ============ 设计令牌 ============ */
:root{
  --bg:#F7F4FF;
  --bg-soft:#EFE9FF;
  --surface:#FFFFFF;
  --ink:#2A2140;
  --ink-soft:#6B6285;
  --ink-faint:#8C83A6;
  --primary:#7C5CFC;
  --primary-deep:#5E3DF0;
  --accent:#FF6FAE;
  --accent-deep:#F4488F;
  --grad-main:linear-gradient(135deg,#8E6AFB 0%,#FF7EB6 100%);
  --grad-soft:linear-gradient(135deg,#A98BFF 0%,#FF9EC9 100%);
  --ring:rgba(124,92,252,.14);
  --font-display:"Ma Shan Zheng","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;
  --radius-lg:28px;
  --radius-md:20px;
  --shadow-phone:0 30px 60px -18px rgba(94,61,240,.35),0 12px 28px -12px rgba(244,72,143,.22);
  --shadow-card:0 14px 34px -18px rgba(42,33,64,.22);
}
*{margin:0;padding:0;box-sizing:border-box;}
html{
  scroll-behavior:smooth;
  font-size:16px !important;
}
body{
  font-family:var(--font-body) !important;
  font-size:16px !important;
  background:var(--bg) !important;
  color:var(--ink) !important;
  line-height:1.7 !important;
  -webkit-font-smoothing:antialiased;
  -webkit-user-select:auto;
  overflow-x:hidden;
}
img{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
section{scroll-margin-top:80px;}

/* ============ 通用容器与区块头 ============ */
.wrap{width:min(1180px,92%);margin:0 auto;}
.kicker{
  font-size:14px;font-weight:700;letter-spacing:.18em;
  color:var(--accent-deep);
  text-transform:uppercase;
  margin-bottom:14px;
}
.section-head{max-width:640px;margin:0 auto 52px;text-align:center;}
.section-head h2{
  font-size:clamp(1.8rem,4vw,2.6rem);
  font-weight:700;line-height:1.3;
  text-wrap:pretty;
}
.section-head p.sec-sub{color:var(--ink-soft);margin-top:14px;font-size:16px;}

/* ============ 顶部导航 ============ */
.site-nav{
  position:sticky;top:0;z-index:60;
  background:rgba(247,244,255,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s, box-shadow .3s;
}
.site-nav.scrolled{border-bottom-color:var(--ring);box-shadow:0 6px 24px -18px rgba(42,33,64,.25);}
.nav-inner{display:flex;align-items:center;gap:28px;height:68px;}
.brand{display:flex;align-items:center;gap:12px;font-weight:700;font-size:19px;}
.brand-logo{width:38px;height:38px;border-radius:30%;object-fit:cover;box-shadow:0 4px 12px -4px rgba(124,92,252,.5);}
.brand em{font-style:normal;color:var(--primary-deep);}
.nav-links{display:flex;gap:4px;margin-left:auto;}
.nav-links a{
  padding:12px 16px;min-height:44px;display:inline-flex;align-items:center;
  font-size:15px;color:var(--ink-soft);border-radius:12px;transition:color .2s,background .2s;
}
.nav-links a:hover{color:var(--primary-deep);background:rgba(124,92,252,.08);}
.nav-cta{
  min-height:44px;display:inline-flex;align-items:center;gap:8px;
  padding:0 22px;border-radius:999px;font-size:15px;font-weight:600;color:#fff;
  background:var(--grad-main);
  box-shadow:0 10px 22px -10px rgba(244,72,143,.55);
  transition:transform .2s,box-shadow .2s;
}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 14px 26px -10px rgba(244,72,143,.6);}

/* ============ 首屏 Hero ============ */
.hero{position:relative;overflow:hidden;padding:clamp(56px,9vw,110px) 0 clamp(48px,8vw,96px);}
.hero-glow{position:absolute;inset:0;pointer-events:none;}
.hero-glow::before,.hero-glow::after{
  content:"";position:absolute;border-radius:50%;filter:blur(60px);opacity:.55;
}
.hero-glow::before{width:560px;height:560px;background:#D9C4FF;top:-160px;left:-120px;}
.hero-glow::after{width:520px;height:520px;background:#FFC9E2;bottom:-180px;right:-100px;}
.hero-inner{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;}
.hero-copy .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.12em;color:var(--primary-deep);
  background:rgba(124,92,252,.1);border:1px solid var(--ring);
  padding:7px 14px;border-radius:999px;margin-bottom:22px;
}
.hero-copy h1{
  font-family:var(--font-display);
  font-size:clamp(2.6rem,6.4vw,4.4rem);
  font-weight:400;line-height:1.22;
  letter-spacing:.02em;
  text-wrap:pretty;
  background:linear-gradient(120deg,#5E3DF0 10%,#9A46FF 45%,#F4488F 90%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-copy .lead{margin-top:22px;max-width:520px;font-size:17px;color:var(--ink-soft);}
.hero-cta{display:flex;flex-wrap:wrap;gap:16px;margin-top:34px;}
.btn{
  min-height:52px;display:inline-flex;align-items:center;gap:10px;
  padding:0 30px;border-radius:999px;font-size:16px;font-weight:600;
  transition:transform .2s,box-shadow .2s;
}
.btn:hover{transform:translateY(-2px);}
.btn-primary{color:#fff;background:var(--grad-main);box-shadow:0 14px 28px -12px rgba(244,72,143,.6);}
.btn-ghost{
  color:var(--primary-deep);background:var(--surface);
  border:1px solid rgba(124,92,252,.28);
  box-shadow:0 10px 22px -14px rgba(42,33,64,.25);
}
.btn-ghost:hover{box-shadow:0 14px 26px -14px rgba(42,33,64,.3);}
.hero-note{margin-top:18px;font-size:13px;color:var(--ink-faint);}

/* 手机模型 */
.phone{
  position:relative;
  background:#1A1430;
  border-radius:34px;
  padding:10px;
  box-shadow:var(--shadow-phone);
  border:1px solid rgba(255,255,255,.25);
}
.phone img{border-radius:25px;width:100%;}
.phone::after{ /* 底部 Home 指示条 */
  content:"";position:absolute;left:50%;bottom:16px;transform:translateX(-50%);
  width:34%;height:4px;border-radius:99px;background:rgba(255,255,255,.65);z-index:2;
}
.phone.big{width:min(320px,68vw);margin:0 auto;}
.hero-stage{position:relative;}
.float-chip{
  position:absolute;display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.86);backdrop-filter:blur(10px);
  border:1px solid rgba(255,255,255,.9);
  border-radius:999px;padding:10px 16px;font-size:14px;font-weight:600;
  color:var(--ink);box-shadow:0 14px 30px -12px rgba(94,61,240,.4);
  animation:floaty 5s ease-in-out infinite;
}
.chip-live{top:12%;left:-30px;}
.chip-call{bottom:18%;right:-26px;animation-delay:1.4s;}
.chip-dot{width:8px;height:8px;border-radius:50%;background:#FF4D6D;box-shadow:0 0 0 4px rgba(255,77,109,.18);}
.float-logo{
  position:absolute;top:-6%;right:-8%;width:88px;height:88px;border-radius:26%;
  object-fit:cover;box-shadow:0 18px 36px -14px rgba(124,92,252,.55);
  border:4px solid rgba(255,255,255,.9);
  animation:floaty 6s ease-in-out infinite 0.8s;
}
@keyframes floaty{
  0%,100%{transform:translateY(0);}
  50%{transform:translateY(-10px);}
}

/* 飘落花瓣 */
.petals{position:absolute;inset:0;overflow:hidden;pointer-events:none;}
.petal{
  position:absolute;top:-4vh;width:16px;height:20px;
  background:linear-gradient(160deg,#FFC2DB,#FF8FC7);
  border-radius:70% 30% 62% 38%;
  opacity:.75;
  animation:fall linear infinite;
}
@keyframes fall{
  0%{transform:translate(0,-4vh) rotate(0deg);}
  25%{transform:translate(26px,22vh) rotate(100deg);}
  50%{transform:translate(-20px,52vh) rotate(200deg);}
  75%{transform:translate(22px,80vh) rotate(300deg);}
  100%{transform:translate(0,108vh) rotate(360deg);}
}

/* ============ 功能特性 ============ */
.features{padding:clamp(72px,9vw,110px) 0;background:var(--surface);}
.feature-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:22px;
}
.feature-card{
  position:relative;background:var(--bg);
  border:1px solid rgba(124,92,252,.1);
  border-radius:var(--radius-lg);
  padding:30px 28px 28px;
  transition:transform .25s,box-shadow .25s,border-color .25s;
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card);border-color:rgba(124,92,252,.28);}
.feature-icon{
  width:54px;height:54px;border-radius:18px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--grad-soft);color:#fff;
  box-shadow:0 10px 20px -10px rgba(244,72,143,.55);
  margin-bottom:20px;
}
.feature-card h3{font-size:19px;font-weight:700;margin-bottom:4px;}
.feature-card .feat-tag{font-size:13px;color:var(--primary-deep);font-weight:600;margin-bottom:10px;display:block;}
.feature-card p{font-size:15px;color:var(--ink-soft);}

/* ============ 页面预览 ============ */
.screens{
  padding:clamp(72px,9vw,110px) 0;
  background:
    radial-gradient(600px 380px at 12% 8%,rgba(169,139,255,.16),transparent 60%),
    radial-gradient(560px 380px at 88% 92%,rgba(255,158,201,.18),transparent 60%),
    var(--bg-soft);
}
.screens-grid{
  display:grid;grid-template-columns:repeat(6,1fr);gap:20px;
  align-items:start;
}
.screen-item{text-align:center;}
.phone.small{width:100%;max-width:196px;margin:0 auto;border-radius:26px;padding:7px;}
.phone.small img{border-radius:19px;}
.screen-item figcaption{margin-top:16px;font-size:15px;font-weight:600;color:var(--ink);}
.screen-item .screen-sub{font-size:13px;color:var(--ink-soft);}

/* ============ 关于我们 ============ */
.about{
  padding:clamp(64px,8vw,96px) 0;
  background:var(--surface);
}
.about .section-head{margin-bottom:0;}
.about .sec-sub{
  max-width:720px;
  margin-left:auto;
  margin-right:auto;
  white-space:pre-wrap;
}

/* ============ 下载区 ============ */
.download{padding:clamp(72px,9vw,110px) 0;}
.download-card{
  position:relative;overflow:hidden;
  border-radius:36px;color:#fff;
  background:var(--grad-main);
  padding:clamp(48px,7vw,84px) clamp(28px,5vw,72px);
  text-align:center;
  box-shadow:0 30px 60px -24px rgba(124,92,252,.6);
}
.download-card::before,.download-card::after{
  content:"";position:absolute;border-radius:50%;background:rgba(255,255,255,.14);
}
.download-card::before{width:340px;height:340px;top:-140px;right:-80px;}
.download-card::after{width:280px;height:280px;bottom:-120px;left:-60px;}
.download-logo{
  width:84px;height:84px;border-radius:26%;object-fit:cover;
  margin:0 auto 24px;border:3px solid rgba(255,255,255,.85);
  box-shadow:0 16px 34px -14px rgba(42,33,64,.45);
  position:relative;
}
.download-card h2{
  font-size:clamp(1.8rem,4.4vw,2.8rem);font-weight:700;
  position:relative;text-wrap:pretty;
}
.download-card .dl-sub{margin-top:14px;font-size:16px;opacity:.92;position:relative;}
.download-cta{display:flex;justify-content:center;flex-wrap:wrap;gap:16px;margin-top:34px;position:relative;}
.btn-light{color:var(--primary-deep);background:#fff;box-shadow:0 14px 28px -14px rgba(42,33,64,.5);}
.btn-light:hover{box-shadow:0 18px 32px -14px rgba(42,33,64,.55);}
.download-note{margin-top:18px;font-size:13px;opacity:.8;position:relative;}

/* ============ 页脚 ============ */
.footer{background:#251D3E;color:#B9B0D4;padding:56px 0 40px;}
.footer-inner{display:flex;flex-wrap:wrap;gap:32px;align-items:center;justify-content:space-between;}
.footer-brand{display:flex;align-items:center;gap:12px;font-size:17px;font-weight:700;color:#fff;}
.footer-brand img{width:36px;height:36px;border-radius:28%;object-fit:cover;}
.footer-brand small{display:block;font-size:12px;font-weight:400;color:#8A80AD;margin-top:2px;}
.footer-links{display:flex;gap:8px;flex-wrap:wrap;}
.footer-links a{padding:10px 14px;min-height:44px;font-size:14px;border-radius:10px;transition:color .2s,background .2s;}
.footer-links a:hover{color:#fff;background:rgba(255,255,255,.08);}
.footer-bottom{margin-top:36px;padding-top:24px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#8A80AD;}

/* ============ 滚动显现 ============ */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .6s ease,transform .6s ease;}
.reveal.in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1020px){
  .hero-inner{grid-template-columns:1fr;gap:56px;}
  .hero-stage{order:2;max-width:340px;margin:0 auto;width:100%;}
  .float-logo{right:0;}
  .chip-live{left:-8px;}
  .feature-grid{grid-template-columns:repeat(2,1fr);}
  .screens-grid{grid-template-columns:repeat(3,1fr);row-gap:36px;}
}
@media (max-width:640px){
  .nav-inner{height:60px;gap:14px;}
  .brand{font-size:17px;}
  .brand-logo{width:34px;height:34px;}
  .nav-links{display:none;}
  .nav-cta{padding:0 16px;font-size:14px;}
  .hero{padding-top:36px;}
  .hero-inner{gap:44px;}
  .hero-copy .eyebrow{margin-bottom:18px;}
  .hero-copy h1{font-size:clamp(2.2rem,9vw,2.8rem);line-height:1.25;}
  .hero-copy .lead{margin-top:16px;font-size:15px;}
  .hero-cta{margin-top:26px;gap:12px;flex-direction:column;}
  .hero-cta .btn{width:100%;justify-content:center;}
  .hero-note{margin-top:14px;text-align:center;}
  .hero-stage{max-width:300px;}
  .phone.big{width:min(280px,72vw);}
  .float-logo{width:64px;height:64px;right:2px;top:-5%;border-width:3px;}
  .float-chip{font-size:13px;padding:8px 12px;gap:6px;}
  .chip-live{left:2px;top:9%;}
  .chip-call{right:2px;bottom:14%;}
  .section-head{margin-bottom:36px;}
  .section-head h2{font-size:1.65rem;}
  .feature-grid{grid-template-columns:1fr;gap:16px;}
  .feature-card{padding:24px 20px 22px;}
  .feature-icon{width:50px;height:50px;border-radius:16px;margin-bottom:16px;}
  .screens-grid{grid-template-columns:repeat(2,1fr);gap:12px;row-gap:30px;}
  .phone.small{max-width:100%;border-radius:24px;padding:6px;}
  .phone.small img{border-radius:17px;}
  .screen-item figcaption{margin-top:12px;font-size:14px;}
  .screen-item .screen-sub{font-size:12px;}
  .download-card{padding:44px 20px;border-radius:28px;}
  .download-logo{width:72px;height:72px;margin-bottom:18px;}
  .download-cta{margin-top:28px;gap:12px;flex-direction:column;}
  .download-cta .btn{width:100%;justify-content:center;}
  .footer{padding:44px 0 32px;}
  .footer-inner{gap:24px;flex-direction:column;align-items:flex-start;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;margin-top:28px;padding-top:20px;}
}
@media (max-width:400px){
  .btn{padding:0 20px;font-size:15px;}
  .nav-cta svg{display:none;}
}
@media (prefers-reduced-motion:reduce){
  .petal,.float-chip,.float-logo{animation:none !important;}
  .petal{display:none;}
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
}

/* OpenInstall / PC 扫码 */
.pc-qr-wrap{display:none;margin-top:28px;position:relative;}
.pc-qr-box{
  width:168px;height:168px;margin:0 auto;padding:10px;
  background:#fff;border-radius:18px;
  box-shadow:0 14px 28px -14px rgba(42,33,64,.45);
}
.pc-qr-box img{width:100%;height:100%;display:block;border-radius:10px;}
.pc-qr-text{margin-top:12px;font-size:13px;opacity:.85;}
@media (min-width:1021px){
  .pc-qr-wrap{display:block;}
}
.ly-wechat[hidden]{display:none!important;}
.ly-wechat{position:fixed;inset:0;z-index:200;}
.ly-wechat__mask{position:absolute;inset:0;background:rgba(0,0,0,.72);}
.ly-wechat__panel{
  position:absolute;top:24px;right:18px;max-width:240px;
  padding:16px 18px;border-radius:12px;background:#fff;color:#323232;
  font-size:15px;line-height:1.6;text-align:center;
}
.ly-wechat__panel::before{
  content:"";position:absolute;top:-10px;right:28px;
  border:6px solid transparent;border-bottom-color:#fff;
}
.dl-btn{cursor:pointer;border:0;font:inherit;}
button.dl-btn,button.btn,button.nav-cta{appearance:none;-webkit-appearance:none;}