:root{
  --primary:#FF5E7E;
  --primary-dark:#E6456B;
  --primary-light:#FFF1F4;
  --dark:#22252E;
  --text:#4B5060;
  --muted:#6E7484;
  --border:#EAECF1;
  --bg:#F7F8FA;
  --card:#FFFFFF;
  --radius:14px;
  --shadow:0 8px 24px rgba(34,37,46,.08);
  --shadow-hover:0 16px 36px rgba(255,94,126,.18);
  --on-dark:#FFE3E9;
  --frog:#3FBF6B;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:76px}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--text);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font-family:inherit}
.container{max-width:1180px;margin:0 auto;padding:0 24px}
section{padding:84px 0}

.sec-head{text-align:center;margin-bottom:48px}
.sec-head .tag,.hero-tag,.dl-tag{display:inline-block;font-size:13px;font-weight:600;padding:5px 16px;border-radius:20px}
.sec-head .tag{color:var(--primary);background:var(--primary-light);margin-bottom:14px}
.sec-head h2{font-size:32px;color:var(--dark);margin-bottom:10px}
.sec-head p{font-size:15px;color:var(--muted)}

.header{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:box-shadow .3s,border-color .3s}
.header.scrolled{box-shadow:0 4px 16px rgba(34,37,46,.08);border-color:var(--border)}
.nav{height:64px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.logo{font-size:20px;font-weight:800;color:var(--dark);white-space:nowrap;letter-spacing:.5px;display:inline-flex;align-items:center;min-height:44px}
.logo span{color:var(--frog)}
.logo em{font-style:normal;color:var(--primary)}
.nav-menu{display:flex;align-items:center;gap:2px;flex:1;justify-content:center;min-width:0}
.nav-menu a{font-size:14px;color:var(--text);padding:8px 12px;border-radius:8px;white-space:nowrap;transition:color .2s,background .2s}
.nav-menu a:hover,.nav-menu a.active{color:var(--primary);background:var(--primary-light)}
.nav-dl{font-size:13px;font-weight:600;color:#fff;background:var(--primary);padding:11px 18px;border-radius:10px;white-space:nowrap;display:inline-flex;align-items:center;min-height:44px;transition:background .2s,transform .2s}
.nav-dl:hover{background:var(--primary-dark);transform:translateY(-1px)}

.hero{padding:148px 0 80px;background:linear-gradient(180deg,var(--primary-light) 0%,var(--bg) 100%)}
.hero .container{display:grid;grid-template-columns:1.15fr .85fr;align-items:center;gap:48px}
.hero-tag{background:#fff;border:1px solid #FFD6DF;color:var(--primary);padding:5px 14px;margin-bottom:18px}
.hero-copy h1{font-size:40px;color:var(--dark);line-height:1.25;margin-bottom:18px;font-weight:800}
.v-chip,.dl-ver-chip{display:inline-block;font-weight:700;padding:3px 12px;border-radius:8px;margin-left:10px;vertical-align:middle}
.v-chip{background:var(--primary);color:#fff;font-size:16px}
.hero-copy .lead{font-size:16px;color:var(--text);max-width:540px;margin-bottom:30px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;font-size:15px;font-weight:600;padding:14px 30px;border-radius:12px;border:1px solid transparent;transition:transform .2s,box-shadow .2s,background .2s,border-color .2s}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px rgba(255,94,126,.35)}
.btn-primary:hover{background:var(--primary-dark)}
.btn-ghost{background:#fff;color:var(--primary);border-color:#FFD6DF;box-shadow:var(--shadow)}
.btn-ghost:hover{border-color:var(--primary);box-shadow:var(--shadow-hover)}
.hero-pic{justify-self:center;width:300px}
.hero-pic img{width:100%;border-radius:18px;box-shadow:0 24px 48px rgba(255,94,126,.22)}

.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;transition:transform .25s,box-shadow .25s}
.work-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.work-card img{width:100%}
.work-info{padding:14px 16px}
.work-info h3{font-size:16px;color:var(--dark);margin-bottom:4px}
.work-info p{font-size:13px;color:var(--muted)}

.intro-lead{max-width:780px;margin:0 auto 44px;text-align:center;font-size:16px;color:var(--text)}
.intro-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:18px}
.intro-item{display:flex;gap:22px;align-items:flex-start;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px 30px;transition:transform .25s,box-shadow .25s}
.intro-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.intro-item .num{font-size:28px;font-weight:800;color:var(--primary);line-height:1;padding-top:2px;min-width:44px}
.intro-item h3{font-size:18px;color:var(--dark);margin-bottom:6px}
.intro-item p{font-size:14px;color:var(--text)}

.features{background:var(--card)}
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feat-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:28px 26px;transition:transform .25s,box-shadow .25s,background .25s}
.feat-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);background:var(--card)}
.feat-card .icon{width:46px;height:46px;border-radius:12px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.feat-card .icon svg{width:22px;height:22px}
.feat-card h3{font-size:17px;color:var(--dark);margin-bottom:8px}
.feat-card p{font-size:14px;color:var(--text)}

.compare-wrap{max-width:920px;margin:0 auto;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.cmp-row{display:grid;grid-template-columns:1fr 1.1fr 1.1fr;align-items:center}
.cmp-row+.cmp-row{border-top:1px solid var(--border)}
.cmp-row.head{background:var(--dark);color:#fff;font-weight:600}
.cell{padding:16px 20px;font-size:14px}
.cmp-row:not(.head) .cell:first-child{color:var(--dark);font-weight:600}
.cmp-row .cell.me{background:var(--primary-light);color:var(--primary-dark);font-weight:600}
.cmp-row:not(.head) .cell:last-child{color:#B5544C}

.data{background:var(--dark);color:#fff}
.data .sec-head h2{color:#fff}
.data .sec-head p{color:#B9BFCE}
.data .sec-head .tag{background:rgba(255,94,126,.16);color:#FF8FA6}
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.data-item .num{font-size:40px;font-weight:800;color:var(--primary);line-height:1.2}
.data-item .label{font-size:14px;color:#B9BFCE;margin-top:8px}

.rev-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.rev-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;transition:transform .25s,box-shadow .25s}
.rev-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}
.rev-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{width:42px;height:42px;border-radius:50%;color:#fff;font-weight:700;font-size:17px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.rev-card:nth-child(1) .avatar{background:#FF5E7E}
.rev-card:nth-child(2) .avatar{background:#7C5CFF}
.rev-card:nth-child(3) .avatar{background:#2EC4B6}
.rev-card:nth-child(4) .avatar{background:#FF9F43}
.rev-card:nth-child(5) .avatar{background:#4D8DFF}
.rev-card:nth-child(6) .avatar{background:#E056A8}
.rev-name{font-size:15px;color:var(--dark);font-weight:600}
.stars{font-size:13px;color:#FFB400;letter-spacing:2px;line-height:1.4}
.rev-card p{font-size:14px;color:var(--text)}

.update-wrap{max-width:820px;margin:0 auto;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow)}
.up-head{display:flex;align-items:center;gap:16px;flex-wrap:wrap;padding-bottom:18px;margin-bottom:8px;border-bottom:1px solid var(--border)}
.ver-badge{font-size:18px;font-weight:800;color:#fff;background:var(--primary);padding:6px 16px;border-radius:10px}
.up-date{font-size:14px;color:var(--muted)}
.up-list li{position:relative;padding:8px 0 8px 26px;font-size:14.5px;color:var(--text)}
.up-list li::before{content:"";position:absolute;left:6px;top:17px;width:8px;height:8px;border-radius:50%;background:var(--primary)}

.faq-wrap{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:box-shadow .25s}
.faq-item:hover{box-shadow:var(--shadow)}
.faq-item.open{box-shadow:var(--shadow-hover)}
.faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;gap:14px;padding:18px 22px;background:none;border:none;cursor:pointer;font-size:15.5px;font-weight:600;color:var(--dark);text-align:left}
.faq-q .arrow{flex-shrink:0;width:26px;height:26px;border-radius:50%;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:18px;line-height:1;transition:transform .3s}
.faq-item.open .faq-q .arrow{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 22px 20px;font-size:14px;color:var(--text)}
.faq-item.open .faq-a{max-height:600px}

.download{background:linear-gradient(135deg,#FF6B88,#E6456B);color:#fff;text-align:center}
.dl-tag{background:rgba(255,255,255,.2);color:#fff;margin-bottom:16px}
.download h1{font-size:34px;font-weight:800;margin-bottom:8px}
.dl-ver-chip{background:#fff;color:var(--primary-dark);font-size:15px}
.size{font-size:14px;color:var(--on-dark);margin-bottom:30px}
.dl-btns{display:flex;justify-content:center;gap:18px;margin-bottom:28px}
.btn-white{background:#fff;color:var(--primary-dark);font-size:16px;padding:15px 34px;border-radius:14px;box-shadow:0 10px 26px rgba(0,0,0,.18)}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(0,0,0,.24)}
.dl-tip{font-size:15px;color:#fff}

.footer{background:#1B1E26;color:#AEB4C2;text-align:center;padding:26px 20px;font-size:13.5px}
.footer a{color:#fff;font-weight:600;transition:color .2s}
.footer a:hover{color:var(--primary)}

.back-top{position:fixed;right:26px;bottom:30px;width:46px;height:46px;border-radius:50%;border:none;background:var(--primary);color:#fff;font-size:20px;line-height:1;cursor:pointer;box-shadow:0 10px 24px rgba(255,94,126,.4);opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity .3s,transform .3s,visibility .3s,background .2s;z-index:99}
.back-top.show{opacity:1;visibility:visible;transform:none}
.back-top:hover{background:var(--primary-dark)}

@media (max-width:1024px){
  .nav-menu a{font-size:13px;padding:8px 9px}
  .hero .container{grid-template-columns:1fr 1fr;gap:32px}
  .hero-copy h1{font-size:34px}
  .works-grid{grid-template-columns:repeat(2,1fr)}
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .rev-grid{grid-template-columns:repeat(2,1fr)}
  .data-grid{grid-template-columns:repeat(2,1fr)}
}

@media (max-width:900px){
  .nav-menu{display:none}
}

@media (max-width:768px){
  html{scroll-padding-top:66px}
  .container{padding:0 20px}
  section{padding:60px 0}
  .nav{height:56px}
  .hero{padding:116px 0 56px}
  .hero .container{grid-template-columns:1fr;text-align:center}
  .hero-copy h1{font-size:29px}
  .hero-copy .lead{font-size:15px;margin-left:auto;margin-right:auto}
  .hero-btns{flex-direction:column;align-items:stretch}
  .hero-btns .btn{width:100%}
  .hero-pic{width:74%;max-width:300px}
  .sec-head h2{font-size:26px}
  .works-grid{grid-template-columns:1fr}
  .intro-item{padding:22px}
  .feat-grid{grid-template-columns:1fr}
  .cell{padding:12px 10px;font-size:13px}
  .data-grid{grid-template-columns:repeat(2,1fr);gap:28px 18px}
  .data-item .num{font-size:30px}
  .rev-grid{grid-template-columns:1fr}
  .download h1{font-size:28px}
  .dl-btns{flex-direction:column}
  .dl-btns .btn{width:100%}
  .size{font-size:12px;white-space:nowrap}
  .back-top{right:16px;bottom:20px;width:42px;height:42px}
}