:root{
  --primary:#e0577e;
  --primary-deep:#c63f66;
  --primary-soft:#fdeef3;
  --accent:#a855d8;
  --text:#2b2530;
  --text-sub:#6b6370;
  --border:#f0e5ea;
  --bg:#fbf8fa;
  --card:#ffffff;
  --radius:18px;
  --shadow:0 6px 20px rgba(224,87,126,.08);
  --shadow-hover:0 14px 32px rgba(224,87,126,.16);
  --maxw:1200px;
  --header-h:68px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:var(--header-h)}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{text-decoration:none;color:inherit}
ul{list-style:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
section{padding:76px 0}

.header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
  transition:box-shadow .3s;
}
.header.scrolled{box-shadow:0 4px 18px rgba(224,87,126,.10)}
.nav{height:var(--header-h);display:flex;align-items:center;justify-content:space-between;gap:16px}
.logo{
  font-size:22px;font-weight:800;letter-spacing:.5px;white-space:nowrap;
  background:linear-gradient(120deg,var(--primary),var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.nav-menu{display:flex;align-items:center;gap:6px}
.nav-menu a{
  display:block;padding:8px 10px;font-size:14px;color:var(--text-sub);
  border-radius:10px;transition:.25s;
}
.nav-menu a:hover{color:var(--primary-deep);background:var(--primary-soft)}
.nav-menu a.active{color:var(--primary-deep);font-weight:600;background:var(--primary-soft)}
.nav-btn{
  font-size:13px;font-weight:600;color:#fff;background:var(--primary);
  padding:7px 16px;border-radius:999px;white-space:nowrap;
  box-shadow:0 4px 12px rgba(224,87,126,.25);transition:.25s;
}
.nav-btn:hover{background:var(--primary-deep);transform:translateY(-1px)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:600;color:#fff;background:var(--primary);
  padding:12px 30px;border-radius:999px;
  box-shadow:0 6px 16px rgba(224,87,126,.25);transition:.25s;
}
.btn:hover{background:var(--primary-deep);transform:translateY(-2px);box-shadow:0 10px 22px rgba(224,87,126,.30)}
.btn-ghost{background:transparent;color:var(--primary-deep);border:1.5px solid var(--primary)}
.btn-ghost:hover{background:var(--primary-soft)}

.sec-title{font-size:30px;font-weight:800;text-align:center}
.sec-sub{text-align:center;color:var(--text-sub);font-size:15px;margin-top:10px;margin-bottom:44px}
.icon{
  width:52px;height:52px;border-radius:14px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--primary-soft);color:var(--primary-deep);
}
.icon svg{width:26px;height:26px}

.hero{
  padding:calc(var(--header-h) + 60px) 0 70px;
  background:linear-gradient(180deg,var(--primary-soft),var(--bg) 70%);
}
.hero-inner{display:grid;grid-template-columns:1.2fr .8fr;gap:50px;align-items:center}
.hero h1{font-size:44px;line-height:1.25;font-weight:800}
.ver-pill{
  display:inline-block;vertical-align:middle;margin-left:10px;
  font-size:17px;font-weight:700;color:var(--primary-deep);
  background:var(--card);border:1px solid var(--border);border-radius:999px;padding:4px 14px;
}
.hero-desc{margin:18px 0 30px;font-size:16px;color:var(--text-sub);max-width:560px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.hero-pic{justify-self:center}
.hero-pic img{width:100%;max-width:340px;border-radius:22px;box-shadow:var(--shadow-hover)}

.works-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.work-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);transition:.3s;
}
.work-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.work-card img{width:100%}
.work-card figcaption{padding:12px 16px;font-size:14px;font-weight:600;text-align:center;background:var(--card)}

.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.product-card,.feature-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:28px;box-shadow:var(--shadow);transition:.3s;
}
.product-card:hover,.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.product-card h3,.feature-card h3{font-size:18px;margin:16px 0 8px}
.product-card p,.feature-card p{font-size:14px;color:var(--text-sub)}

.features{background:var(--card);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feature-card{text-align:center}

.compare-box{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden;
}
.compare-table{width:100%;border-collapse:collapse;font-size:15px}
.compare-table th,.compare-table td{padding:15px 20px;text-align:center;border-bottom:1px solid var(--border)}
.compare-table th{background:var(--primary-soft);font-weight:700}
.compare-table th:first-child,.compare-table td:first-child{text-align:left}
.compare-table td:first-child{font-weight:600}
.compare-table tr:last-child td{border-bottom:none}
.compare-table td.best{color:var(--primary-deep);font-weight:700}

.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.data-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:30px 20px;text-align:center;box-shadow:var(--shadow);transition:.3s;
}
.data-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.data-num{font-size:40px;font-weight:800;color:var(--primary-deep);line-height:1.2}
.data-num .suffix{font-size:22px;margin-left:2px}
.data-label{margin-top:6px;font-size:14px;color:var(--text-sub)}

.reviews-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.review-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow);transition:.3s;
}
.review-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{
  width:46px;height:46px;border-radius:50%;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#fff;font-weight:700;font-size:18px;
}
.review-name{font-weight:700;font-size:15px;line-height:1.4}
.stars{color:#f5a623;font-size:13px;letter-spacing:2px;line-height:1.4}
.review-text{font-size:14px;color:var(--text-sub);line-height:1.8}

.update-card{
  max-width:760px;margin:0 auto;background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);padding:32px;box-shadow:var(--shadow);
}
.update-head{
  display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  padding-bottom:16px;border-bottom:1px solid var(--border);margin-bottom:8px;
}
.update-ver{font-size:22px;font-weight:800;color:var(--primary-deep)}
.update-date{
  font-size:13px;color:var(--text-sub);background:var(--primary-soft);
  border:1px solid var(--border);padding:3px 12px;border-radius:999px;
}
.update-list li{
  position:relative;padding:10px 0 10px 26px;font-size:14px;color:var(--text-sub);
  border-bottom:1px dashed var(--border);
}
.update-list li:last-child{border-bottom:none}
.update-list li::before{
  content:"";position:absolute;left:6px;top:19px;width:8px;height:8px;
  border-radius:50%;background:var(--primary);
}

.faq-list{max-width:760px;margin:0 auto}
.faq-item{
  background:var(--card);border:1px solid var(--border);border-radius:14px;
  margin-bottom:14px;overflow:hidden;transition:.3s;
}
.faq-item.open{border-color:var(--primary);box-shadow:var(--shadow)}
.faq-q{
  width:100%;display:flex;justify-content:space-between;align-items:center;gap:12px;
  padding:18px 22px;background:none;border:none;cursor:pointer;
  font-size:15px;font-weight:700;color:var(--text);text-align:left;font-family:inherit;
}
.faq-icon{width:22px;height:22px;flex-shrink:0;position:relative;transition:transform .3s}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--primary-deep);border-radius:2px}
.faq-icon::before{left:3px;right:3px;top:10px;height:2px}
.faq-icon::after{top:3px;bottom:3px;left:10px;width:2px}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-item.open .faq-a{max-height:300px}
.faq-a p{padding:0 22px 20px;font-size:14px;color:var(--text-sub)}

.download{
  background:linear-gradient(180deg,var(--primary-soft),var(--bg) 70%);
  text-align:center;
}
.dl-title{font-size:36px;font-weight:800;line-height:1.3}
.dl-meta{font-size:14px;color:var(--text-sub);margin:14px 0 28px}
.dl-btns{display:flex;justify-content:center;gap:18px;flex-wrap:wrap}
.dl-btn{min-width:220px}
.dl-tip{margin-top:26px;font-size:15px;color:var(--text-sub)}

.footer{border-top:1px solid var(--border);background:var(--card);padding:28px 0;text-align:center}
.copyright{font-size:14px;color:var(--text-sub)}
.copyright a{color:var(--text-sub);transition:.25s}
.copyright a:hover{color:var(--primary-deep)}

.to-top{
  position:fixed;right:24px;bottom:28px;width:44px;height:44px;border-radius:50%;
  border:none;cursor:pointer;background:var(--primary);color:#fff;font-size:18px;line-height:1;
  box-shadow:0 8px 20px rgba(224,87,126,.30);z-index:99;
  opacity:0;visibility:hidden;transform:translateY(12px);transition:.3s;
}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--primary-deep)}

.js .reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.js .reveal.in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  .js .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

@media (max-width:1100px){
  .nav-hide-md{display:none}
}
@media (max-width:992px){
  .hero h1{font-size:36px}
  .works-grid{grid-template-columns:repeat(2,1fr)}
  .product-grid,.features-grid,.reviews-grid{grid-template-columns:repeat(2,1fr)}
  .data-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:768px){
  .container{padding:0 20px}
  section{padding:56px 0}
  .nav-menu{display:none}
  .hero{padding:calc(var(--header-h) + 40px) 0 50px}
  .hero-inner{grid-template-columns:1fr;gap:34px;text-align:center}
  .hero h1{font-size:28px}
  .hero-desc{margin-left:auto;margin-right:auto}
  .hero-btns{flex-direction:column;width:100%}
  .btn{width:100%}
  .hero-pic img{max-width:260px;margin:0 auto}
  .sec-title{font-size:24px}
  .sec-sub{margin-bottom:32px}
  .works-grid,.product-grid,.features-grid,.reviews-grid,.data-grid{grid-template-columns:1fr}
  .compare-table{font-size:12px}
  .compare-table th,.compare-table td{padding:12px 6px}
  .dl-title{font-size:28px}
  .dl-meta{font-size:12px;white-space:nowrap}
  .dl-btns{flex-direction:column;width:100%}
  .dl-btn{min-width:0}
  .to-top{right:14px;bottom:18px}
}