:root{
  --pp:#7B3FF2;
  --pp-d:#5B21B6;
  --pp-l:#F1EAFF;
  --pp-m:#C4A9FA;
  --ink:#221440;
  --txt:#4B4160;
  --gray:#7C738F;
  --line:#E8E1F7;
  --bg:#FBF9FF;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  color:var(--ink);background:#fff;line-height:1.85;font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{line-height:1.35;font-weight:700}
.wrap{width:100%;max-width:1120px;margin:0 auto;padding:0 26px}
.doc{max-width:860px;margin:0 auto}

/* ============ 顶栏：紫色渐变 ============ */
.hd{
  position:sticky;top:0;z-index:90;
  background:linear-gradient(100deg,#6D28D9,#8B4CF6 55%,#7B3FF2);
  box-shadow:0 2px 10px rgba(65,25,140,.18);
}
.hd-in{display:flex;align-items:center;height:66px;gap:18px}
.hd-brand{display:flex;align-items:center;gap:10px;flex:none;color:#fff}
.hd-brand img{width:34px;height:34px;border-radius:10px;background:#fff}
.hd-brand b{font-size:17px;letter-spacing:.3px}
.hd-nav{
  display:flex;gap:6px;margin-left:auto;font-size:13px;
  background:rgba(255,255,255,.14);border-radius:999px;padding:4px;
}
.hd-nav a{color:rgba(255,255,255,.9);padding:5px 14px;border-radius:999px}
.hd-nav a:hover{background:rgba(255,255,255,.22);color:#fff}
.hd-cta{
  flex:none;background:#fff;color:var(--pp-d);font-weight:700;font-size:13px;
  border-radius:999px;padding:8px 20px;box-shadow:0 2px 0 rgba(50,15,110,.25);
}
.hd-cta:hover{background:var(--pp-l)}
.hd-menu{display:none;background:none;border:0;color:#fff;cursor:pointer;padding:4px}

/* ============ 英雄区：左文右真机 ============ */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(560px 340px at 82% 18%,rgba(123,63,242,.16),transparent 70%),
    radial-gradient(420px 300px at 8% 82%,rgba(196,169,250,.28),transparent 72%),
    linear-gradient(180deg,#F7F3FF,#fff 78%);
  padding:58px 0 66px;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(123,63,242,.13) 1px,transparent 1px);
  background-size:18px 18px;opacity:.5;
}
.hero-in{
  position:relative;display:grid;grid-template-columns:1.06fr .94fr;
  gap:44px;align-items:center;
}
.kick{
  display:inline-block;font-size:10px;letter-spacing:3.2px;color:var(--pp);
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:4px 14px;margin-bottom:18px;
}
.hero h1{font-size:56px;letter-spacing:-1px;margin-bottom:12px;color:var(--ink)}
.hero h1 span{color:var(--pp)}
.hero .lead{
  font-size:19px;font-weight:600;color:var(--pp-d);margin-bottom:16px;
}
.hero .desc{font-size:15px;color:var(--txt);margin-bottom:26px;text-align:left}
.acts{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  background:linear-gradient(100deg,#8B4CF6,#6D28D9);color:#fff;
  padding:13px 30px;border-radius:999px;font-weight:700;font-size:15px;
  box-shadow:0 8px 20px rgba(109,40,217,.28);
}
.btn svg{width:17px;height:17px}
.btn:hover{filter:brightness(1.06)}
.ghost{
  display:inline-flex;align-items:center;gap:6px;
  padding:12px 22px;border-radius:999px;background:#fff;
  border:1px solid var(--line);color:var(--txt);font-size:14px;
}
.ghost:hover{border-color:var(--pp);color:var(--pp-d)}

/* 真机 */
.phone{
  position:relative;width:288px;margin:0 auto;
  border:9px solid #241449;border-radius:38px;background:#241449;
  box-shadow:0 26px 60px rgba(48,18,110,.24);
}
.phone::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:96px;height:20px;background:#241449;border-radius:0 0 12px 12px;z-index:2;
}
.phone img{width:100%;border-radius:29px;display:block;aspect-ratio:9/16;object-fit:cover}
.phone-tag{
  position:absolute;left:-16px;bottom:38px;z-index:3;
  background:#fff;border-radius:12px;padding:9px 14px;
  box-shadow:0 10px 24px rgba(48,18,110,.16);font-size:11.5px;color:var(--txt);
}
.phone-tag b{display:block;font-size:13.5px;color:var(--pp-d)}
.fcard{
  position:absolute;z-index:3;background:#fff;border-radius:14px;
  padding:10px 14px;box-shadow:0 12px 28px rgba(48,18,110,.15);
  font-size:11.5px;color:var(--txt);line-height:1.55;
}
.fcard b{display:block;color:var(--ink);font-size:12.5px}
.fcard.f1{top:26px;right:-18px}
.fcard.f2{top:47%;left:-30px;text-align:left}
.fcard.f2 b{color:var(--pp)}

/* ============ 标签滚动条 ============ */
.tagbar{
  background:var(--ink);color:#fff;overflow:hidden;padding:9px 0;
}
.tagbar-track{
  display:flex;gap:34px;width:max-content;
  animation:marq 30s linear infinite;white-space:nowrap;
}
.tagbar-track span{font-size:12px;letter-spacing:1.6px;color:rgba(255,255,255,.82)}
.tagbar-track span::before{content:"◆";color:var(--pp-m);margin-right:9px;font-size:9px}
@keyframes marq{from{transform:translateX(0)}to{transform:translateX(-50%)}}
@media (prefers-reduced-motion:reduce){.tagbar-track{animation:none}}

/* ============ 通用区块 ============ */
.sec{padding:64px 0}
.sec-tint{background:var(--bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-h{margin-bottom:32px}
.sec-h .tag{
  font-size:10px;letter-spacing:3px;color:var(--pp);display:block;margin-bottom:7px;
}
.sec-h h2{font-size:30px;margin-bottom:9px}
.sec-h p{font-size:15px;color:var(--txt)}

/* ============ 入口：2×2 卡片 ============ */
.egrid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.ecard{
  background:#fff;border:1px solid var(--line);border-radius:18px;
  padding:24px 24px 22px;position:relative;
  box-shadow:0 8px 26px rgba(74,36,150,.05);
}
.ecard::after{
  content:"";position:absolute;left:24px;right:24px;bottom:0;height:3px;
  background:linear-gradient(90deg,var(--pp),var(--pp-m));border-radius:3px 3px 0 0;
  opacity:0;transition:.2s;
}
.ecard:hover::after{opacity:1}
.enum{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:50%;
  background:var(--pp-l);color:var(--pp-d);font-size:13px;font-weight:700;
  margin-bottom:12px;font-family:"SFMono-Regular",Consolas,monospace;
}
.ecard h4{font-size:17px;margin-bottom:6px}
.ecard p{font-size:14px;color:var(--txt)}
.ecard code{
  font-family:"SFMono-Regular",Consolas,monospace;font-size:13px;
  background:var(--pp-l);color:var(--pp-d);padding:1px 6px;border-radius:4px;
}
.enote{
  margin-top:22px;background:var(--pp-l);border-radius:12px;
  padding:14px 18px;font-size:13.5px;color:var(--pp-d);
}

/* ============ 特色：错落双列 ============ */
.fgrid{display:grid;grid-template-columns:1fr 1fr;gap:20px 24px}
.fcell{
  background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:24px;display:grid;grid-template-columns:52px 1fr;gap:16px;
}
.fcell:nth-child(even){margin-top:34px}
.fico{
  width:44px;height:44px;border-radius:12px;background:var(--pp-l);
  display:flex;align-items:center;justify-content:center;color:var(--pp-d);
}
.fico svg{width:22px;height:22px}
.fcell h4{font-size:16.5px;margin-bottom:4px}
.fcell p{font-size:14px;color:var(--txt);grid-column:1/-1}

/* ============ 界面：主图 + 右侧叠图 ============ */
.shots{display:grid;grid-template-columns:1.5fr 1fr;gap:16px;align-items:start}
.shot-big{
  border-radius:18px;overflow:hidden;border:1px solid var(--line);
  background:#fff;box-shadow:0 14px 34px rgba(74,36,150,.08);
}
.shot-big img{width:100%;aspect-ratio:16/10;object-fit:cover}
.shot-side{display:grid;gap:16px}
.shot-side figure{
  border-radius:14px;overflow:hidden;border:1px solid var(--line);background:#fff;
}
.shot-side img{width:100%;aspect-ratio:16/10;object-fit:cover}
.shot-rows{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:26px}
.srow{border-top:2px solid var(--pp);padding-top:12px}
.srow b{
  display:inline-block;font-family:"SFMono-Regular",Consolas,monospace;
  font-size:11px;color:var(--pp);letter-spacing:1px;margin-bottom:4px;
}
.srow h4{font-size:14.5px;margin-bottom:4px}
.srow p{font-size:13px;color:var(--txt)}

/* 使用指南 */
.guide{
  margin-top:30px;background:#fff;border:1px dashed var(--pp-m);border-radius:16px;padding:22px 24px;
}
.guide h4{font-size:16px;margin-bottom:10px;color:var(--pp-d)}
.guide ol{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.guide li{font-size:13.5px;color:var(--txt);position:relative;padding-left:26px}
.guide li::before{
  content:attr(data-n);position:absolute;left:0;top:2px;
  width:18px;height:18px;border-radius:50%;background:var(--pp);
  color:#fff;font-size:10px;display:flex;align-items:center;justify-content:center;
}

/* ============ FAQ：左问右答表 ============ */
.faq-table{border-top:1px solid var(--line)}
.frow{
  display:grid;grid-template-columns:326px 1fr;gap:26px;
  padding:22px 0;border-bottom:1px dashed var(--line);
}
.frow h3{
  font-size:16px;display:flex;gap:10px;align-items:flex-start;color:var(--ink);
}
.frow h3 .q{
  flex:none;width:26px;height:26px;border-radius:8px;background:var(--pp);
  color:#fff;font-size:12px;display:flex;align-items:center;justify-content:center;
  font-family:"SFMono-Regular",Consolas,monospace;
}
.frow p{font-size:14px;color:var(--txt)}
.frow:nth-child(odd){background:linear-gradient(90deg,transparent,rgba(123,63,242,.03))}

/* ============ 评价：三列卡 ============ */
.rgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.rcard{
  background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:22px;box-shadow:0 8px 22px rgba(74,36,150,.05);
}
.rmeta{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.rav{
  width:34px;height:34px;border-radius:50%;flex:none;
  background:var(--pp-l);color:var(--pp-d);font-size:13px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.rmeta b{font-size:13.5px;display:block;line-height:1.4}
.rmeta time{font-size:11px;color:var(--gray);font-family:"SFMono-Regular",Consolas,monospace}
.rcard blockquote{font-size:13.5px;color:var(--txt);line-height:1.8}

/* ============ 下载band ============ */
.dlsec{padding:66px 0}
.dlband{
  position:relative;overflow:hidden;
  background:linear-gradient(105deg,#5B21B6,#7B3FF2 58%,#9A6BFA);
  border-radius:26px;padding:44px 46px;
  display:grid;grid-template-columns:1fr auto;gap:34px;align-items:center;
  color:#fff;box-shadow:0 26px 60px rgba(76,29,149,.26);
}
.dlband::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;
  border:26px solid rgba(255,255,255,.10);border-radius:50%;
}
.dlband .dlogo{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.dlband .dlogo img{width:58px;height:58px;border-radius:16px;background:#fff}
.dlband .dlogo em{
  font-style:normal;font-size:11px;letter-spacing:3px;color:rgba(255,255,255,.72);
}
.dlband h2{font-size:29px;margin-bottom:8px}
.dlband h2 em{font-style:normal;color:#E9DCFF}
.dlband p{font-size:13.5px;color:rgba(255,255,255,.88);max-width:620px}
.dlband .btn{
  background:#fff;color:var(--pp-d);white-space:nowrap;
  box-shadow:0 6px 18px rgba(36,10,80,.28);
}
.dm{display:flex;gap:7px;flex-wrap:wrap;margin-top:16px}
.dm span{
  font-size:11px;border:1px solid rgba(255,255,255,.35);border-radius:999px;
  padding:2px 10px;color:rgba(255,255,255,.9);
}

/* ============ 页脚：深紫 ============ */
.ft{background:#20123D;color:rgba(255,255,255,.72);padding:40px 0 30px;font-size:12.5px}
.ft-in{text-align:center}
.ft-top{display:flex;align-items:center;justify-content:center;gap:9px;margin-bottom:12px;color:#fff}
.ft-top img{width:28px;height:28px;border-radius:8px;background:#fff}
.ft p{max-width:680px;margin:0 auto 16px;line-height:1.95}
.ft-links{display:flex;gap:20px;justify-content:center;flex-wrap:wrap;margin-bottom:16px;font-size:12px}
.ft-links a{color:rgba(255,255,255,.8)}
.ft-links a:hover{color:#fff}
.ft-copy{font-size:11.5px;color:rgba(255,255,255,.5);line-height:1.9}

/* ============ 返回顶部 ============ */
.backtop{
  position:fixed;right:24px;bottom:88px;z-index:70;
  width:42px;height:42px;border-radius:50%;
  background:#fff;border:1px solid var(--line);color:var(--pp-d);
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  box-shadow:0 8px 20px rgba(40,15,90,.16);
}
.backtop:hover{background:var(--pp);color:#fff;border-color:var(--pp)}

/* ============ 响应式 ============ */
@media (max-width:900px){
  .hero-in{grid-template-columns:1fr;gap:38px}
  .hero .desc{text-align:left}
  .phone{width:262px}
  .fcard.f2{left:-10px}
  .fgrid{grid-template-columns:1fr}
  .fcell:nth-child(even){margin-top:0}
  .egrid{grid-template-columns:1fr}
  .shots{grid-template-columns:1fr}
  .shot-side{grid-template-columns:1fr 1fr}
  .shot-rows{grid-template-columns:1fr}
  .guide ol{grid-template-columns:1fr}
  .frow{grid-template-columns:1fr;gap:8px}
  .rgrid{grid-template-columns:1fr}
  .dlband{grid-template-columns:1fr;padding:34px 26px;text-align:left}
}
@media (max-width:720px){
  .hd-nav{
    display:none;position:absolute;top:66px;left:0;right:0;
    background:#5B21B6;border-radius:0;padding:10px 16px;flex-direction:column;gap:2px;
  }
  .hd-nav.open{display:flex}
  .hd-nav a{padding:9px 10px;border-radius:8px}
  .hd-menu{display:block;margin-left:auto}
  .hd-cta{margin-left:6px;padding:7px 14px}
  .hero{padding:38px 0 48px}
  .hero h1{font-size:42px}
  .hero .lead{font-size:17px}
  .phone{width:236px}
  .fcard{display:none}
  .phone-tag{left:-8px;bottom:22px}
  .sec{padding:46px 0}
  .sec-h h2{font-size:24px}
  .shot-side{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:12px}
  .shot-side figure{flex:0 0 84%;scroll-snap-align:start}
  .shot-side::-webkit-scrollbar{height:0}
  .dlband h2{font-size:24px}
  .backtop{right:16px;bottom:76px}
}