:root{
  --primary:#E85D8B;
  --primary-soft:#FBE7F0;
  --bg:#FDF7FA;
  --bg-soft:#FBF0F6;
  --card:#FFFFFF;
  --border:#F0DFE9;
  --dark:#2B2233;
  --text:#3B2E40;
  --muted:#7E6C82;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 6px 20px rgba(216,90,140,.10);
  --shadow-hover:0 14px 30px rgba(216,90,140,.18);
  --nav-h:64px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
ul{list-style:none}
section{scroll-margin-top:calc(var(--nav-h) + 10px)}
.wrap{width:min(1200px,100%);margin:0 auto;padding:0 24px}

.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;font-weight:600;transition:transform .25s,box-shadow .25s;cursor:pointer;border:none;text-align:center}
.btn-primary{font-size:16px;padding:13px 30px;background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(216,90,140,.28)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 12px 24px rgba(216,90,140,.38)}
.btn-lg{font-size:17px;padding:16px 40px}

.nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);transition:box-shadow .3s}
.nav.scrolled{box-shadow:var(--shadow)}
.nav-inner{display:flex;align-items:center;gap:20px;height:var(--nav-h)}
.logo{font-size:22px;font-weight:800;color:var(--primary);white-space:nowrap}
.nav-links{display:flex;gap:2px;margin-left:auto}
.nav-links a{font-size:14px;color:var(--text);padding:6px 10px;border-radius:8px;transition:color .2s,background .2s}
.nav-links a:hover{color:var(--primary);background:var(--primary-soft)}
.btn-mini{font-size:13px;padding:7px 14px;margin-left:12px;background:var(--primary);color:#fff;box-shadow:0 4px 12px rgba(216,90,140,.25)}
.btn-mini:hover{transform:translateY(-2px);box-shadow:0 8px 18px rgba(216,90,140,.35)}

.hero{padding:64px 0 76px;background:var(--bg-soft)}
.hero-inner{display:grid;grid-template-columns:minmax(0,1fr) 400px;grid-template-areas:"info img" "btns img";gap:30px 48px;align-items:center}
.hero-info{grid-area:info}
.hero h1{font-size:42px;line-height:1.25;font-weight:800;color:var(--dark)}
.ver{display:inline-block;font-size:15px;font-weight:700;color:#fff;background:var(--primary);padding:4px 12px;border-radius:999px;vertical-align:middle;margin-left:8px}
.hero-desc{margin-top:18px;font-size:16px;color:var(--muted);max-width:560px}
.hero-btns{grid-area:btns;display:flex;gap:16px;flex-wrap:wrap}
.hero-img{grid-area:img}
.hero-img img{border-radius:var(--radius);box-shadow:var(--shadow)}

.section{padding:76px 0}
.sec-head{text-align:center;margin-bottom:44px}
.sec-head h2{font-size:30px;font-weight:800;color:var(--dark)}
.sec-head p{margin-top:10px;color:var(--muted);font-size:15px}

.works-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.work-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:transform .3s,box-shadow .3s}
.work-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.work-card img{width:100%}
.work-card figcaption{padding:14px 16px;font-size:14px;color:var(--text);font-weight:600;text-align:center}

.intro-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.intro-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:28px}
.intro-card,.feat-card,.data-card,.rv-card{transition:transform .3s,box-shadow .3s}
.intro-card:hover,.feat-card:hover,.data-card:hover,.rv-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.intro-card h3{font-size:18px;color:var(--dark);margin-bottom:10px;padding-left:12px;border-left:3px solid var(--primary)}
.intro-card p{font-size:14px;color:var(--muted)}

.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feat-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px}
.feat-ico{width:52px;height:52px;border-radius:14px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.feat-ico svg{width:26px;height:26px}
.feat-card h3{font-size:17px;margin-bottom:8px;color:var(--dark)}
.feat-card p{font-size:14px;color:var(--muted)}

.cmp-wrap{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow-x:auto;box-shadow:var(--shadow)}
.cmp-table{width:100%;border-collapse:collapse;min-width:640px}
.cmp-table th,.cmp-table td{padding:16px 20px;text-align:center;border-bottom:1px solid var(--border);font-size:14px}
.cmp-table thead th{background:var(--primary-soft);color:var(--dark);font-weight:700}
.cmp-table tbody tr:last-child td{border-bottom:none}
.cmp-table th:first-child,.cmp-table td:first-child{text-align:left;color:var(--muted);width:150px}
.cmp-table thead th.hot{background:var(--primary);color:#fff}
.cmp-table td.hot{background:rgba(232,93,139,.05)}
.ok{color:var(--primary);font-weight:700;margin-right:4px}
.no{color:#C9B9C6;margin-right:4px}

.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.data-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:32px 20px;text-align:center}
.num{font-size:38px;font-weight:800;color:var(--primary)}
.data-card p{color:var(--muted);font-size:14px;margin-top:6px}

.rv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rv-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.rv-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.rv-avatar{width:44px;height:44px;border-radius:50%;background:var(--primary);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0}
.rv-meta{display:flex;flex-direction:column}
.rv-name{font-weight:700;color:var(--dark);font-size:15px}
.rv-stars{color:#F5A623;font-size:13px;letter-spacing:2px;line-height:1.4}
.rv-text{font-size:14px;color:var(--muted)}

.ver-card{max-width:760px;margin:0 auto;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:36px;box-shadow:var(--shadow)}
.ver-top{display:flex;align-items:center;gap:18px;padding-bottom:20px;border-bottom:1px dashed var(--border);margin-bottom:18px}
.ver-badge{width:76px;height:76px;border-radius:20px;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:800;flex-shrink:0}
.ver-meta h3{font-size:20px;color:var(--dark)}
.ver-meta p{font-size:13px;color:var(--muted);margin-top:4px}
.ver-log li{position:relative;padding:8px 0 8px 24px;font-size:14px;color:var(--text)}
.ver-log li::before{content:"";position:absolute;left:6px;top:17px;width:8px;height:8px;border-radius:50%;background:var(--primary)}
.ver-log b{color:var(--primary);font-weight:700;margin-right:6px}

.faq-list{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;transition:box-shadow .3s}
.faq-item.open{box-shadow:var(--shadow)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:18px 20px;font-size:15px;font-weight:600;color:var(--dark);background:none;border:none;cursor:pointer;text-align:left;font-family:inherit}
.faq-icon{position:relative;width:18px;height:18px;flex-shrink:0}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--primary);border-radius:2px;transition:transform .3s}
.faq-icon::before{left:2px;right:2px;top:8px;height:2px}
.faq-icon::after{top:2px;bottom:2px;left:8px;width:2px}
.faq-item.open .faq-icon::after{transform:scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-item.open .faq-a{max-height:400px}
.faq-a p{padding:0 20px 18px;font-size:14px;color:var(--muted)}

.download{padding:84px 0;background:var(--bg-soft)}
.dl-title{text-align:center;font-size:36px;font-weight:800;color:var(--dark)}
.dl-meta{display:flex;justify-content:center;gap:24px;margin-top:14px;color:var(--muted);font-size:14px}
.dl-btns{display:flex;justify-content:center;gap:18px;margin-top:28px;flex-wrap:wrap}
.dl-tip{text-align:center;margin-top:22px;font-size:14px;color:var(--muted)}

.footer{border-top:1px solid var(--border);background:var(--card);padding:36px 0;text-align:center}
.foot-brand{font-size:14px;color:var(--muted)}
.foot-brand a{color:var(--primary);font-weight:700}
.foot-copy{margin-top:8px;font-size:12px;color:var(--muted)}

.back-top{position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:50%;border:none;background:var(--primary);color:#fff;font-size:20px;line-height:1;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(10px);transition:opacity .3s,visibility .3s,transform .3s;box-shadow:0 8px 18px rgba(216,90,140,.35);z-index:90}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{transform:translateY(-3px)}

@media (max-width:1024px){
  .hero-inner{grid-template-columns:minmax(0,1fr) 340px;gap:26px 32px}
  .hero h1{font-size:36px}
  .works-grid{grid-template-columns:repeat(2,1fr)}
  .intro-grid,.feat-grid,.rv-grid{grid-template-columns:repeat(2,1fr)}
  .data-grid{grid-template-columns:repeat(2,1fr)}
  .nav-links a{font-size:13px;padding:6px 7px}
}

@media (max-width:900px){
  .nav-links{display:none}
  .btn-mini{margin-left:auto}
}

@media (max-width:768px){
  .wrap{padding:0 20px}
  .hero{padding:44px 0 52px}
  .hero-inner{grid-template-columns:1fr;grid-template-areas:"info" "img" "btns";gap:26px}
  .hero h1{font-size:29px}
  .hero-desc{font-size:15px}
  .hero-btns{width:100%}
  .hero-btns .btn-primary{width:100%}
  .section{padding:56px 0}
  .sec-head{margin-bottom:32px}
  .sec-head h2{font-size:24px}
  .works-grid,.intro-grid,.feat-grid,.rv-grid{grid-template-columns:1fr}
  .data-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .num{font-size:30px}
  .cmp-table{min-width:0}
  .cmp-table th,.cmp-table td{padding:12px 7px;font-size:12px}
  .cmp-table th:first-child,.cmp-table td:first-child{width:auto;min-width:52px}
  .ver-card{padding:24px}
  .dl-title{font-size:27px}
  .dl-meta{font-size:12px;gap:10px;white-space:nowrap}
  .dl-btns{flex-direction:column;align-items:stretch;max-width:340px;margin-left:auto;margin-right:auto;width:100%}
  .dl-btns .btn-lg{width:100%;padding:14px 20px;font-size:15px}
  .back-top{right:16px;bottom:16px;width:42px;height:42px}
}