:root{
  --primary:#b93a86;
  --primary-deep:#9c2f72;
  --primary-soft:#f9eef5;
  --dark:#2b2633;
  --text:#403848;
  --muted:#8a7d8c;
  --bg:#ffffff;
  --bg-soft:#fdf6fa;
  --border:#f0dfe9;
  --shadow:0 6px 18px rgba(185,58,134,.10);
  --shadow-hover:0 14px 30px rgba(185,58,134,.20);
  --radius:16px;
  --nav-h:64px;
  --container:1160px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--text);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased;padding-top:var(--nav-h)}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{max-width:var(--container);margin:0 auto;padding:0 20px}

.nav{position:fixed;top:0;left:0;right: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:0 4px 16px rgba(43,47,58,.08)}
.nav-inner{max-width:var(--container);margin:0 auto;height:var(--nav-h);padding:0 20px;display:flex;align-items:center;gap:24px}
.logo{font-size:22px;font-weight:800;color:var(--dark);letter-spacing:1px;flex:none}
.logo em{font-style:normal;color:var(--primary)}
.menu{display:flex;gap:18px;flex:1}
.menu a{font-size:14px;color:var(--text);padding:6px 2px;position:relative;transition:color .2s;white-space:nowrap}
.menu a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--primary);border-radius:2px;transition:width .25s}
.menu a:hover,.menu a.active{color:var(--primary)}
.menu a:hover::after,.menu a.active::after{width:100%}
.nav-btn{height:32px;padding:0 16px;background:var(--primary);color:#fff;font-size:13px;font-weight:600;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;flex:none;white-space:nowrap;transition:background .2s,transform .2s}
.nav-btn:hover{background:var(--primary-deep);transform:translateY(-1px)}

.hero{padding:56px 0 72px;background:var(--bg-soft)}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-text h1{font-size:40px;line-height:1.25;color:var(--dark);font-weight:800;letter-spacing:1px}
.hero-desc{margin:18px 0 30px;font-size:16px;color:var(--text);max-width:520px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.hero-img img{width:100%;height:auto;border-radius:var(--radius);box-shadow:var(--shadow-hover)}

.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 30px;border-radius:999px;font-size:15px;font-weight:600;white-space:nowrap;transition:transform .2s,box-shadow .2s}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px rgba(185,58,134,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(185,58,134,.36)}
.btn-outline{background:#fff;color:var(--primary-deep);border:1.5px solid var(--primary)}
.btn-outline:hover{transform:translateY(-2px);box-shadow:var(--shadow);background:var(--primary-soft)}

.section{padding:84px 0}
.section-alt{background:var(--bg-soft)}
.sec-title{font-size:30px;font-weight:800;color:var(--dark);text-align:center;letter-spacing:1px}
.sec-sub{text-align:center;color:var(--muted);margin-top:8px;font-size:15px}

.works-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:40px}
.work-card,.feature-card,.stat,.review-card,.intro-card,.version-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.work-card,.feature-card,.stat,.review-card{transition:transform .25s,box-shadow .25s}
.work-card:hover,.feature-card:hover,.stat:hover,.review-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.work-card{overflow:hidden}
.work-card img{width:100%;height:auto}

.intro-card{max-width:880px;margin:40px auto 0;padding:36px 40px}
.intro-card p{font-size:15.5px;margin-bottom:14px}
.intro-card p:last-child{margin-bottom:0}

.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:40px}
.feature-card{padding:28px 24px}
.feature-icon{width:48px;height:48px;border-radius:14px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.feature-icon svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.feature-icon svg.ic-fill{fill:currentColor;stroke:none}
.feature-icon circle{fill:currentColor;stroke:none}
.feature-card h3{font-size:17px;color:var(--dark);margin-bottom:8px}
.feature-card p{font-size:14px;color:var(--text)}

.table-wrap{background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);overflow-x:auto;margin-top:40px}
.compare-table{width:100%;min-width:660px;border-collapse:collapse;font-size:14.5px}
.compare-table th,.compare-table td{padding:15px 18px;text-align:center;white-space:nowrap;border-bottom:1px solid var(--border)}
.compare-table thead th{background:var(--dark);color:#fff;font-size:15px;font-weight:600}
.compare-table thead th:first-child{border-radius:var(--radius) 0 0 0}
.compare-table thead th:last-child{border-radius:0 var(--radius) 0 0}
.compare-table tbody td{color:var(--text)}
.compare-table td:first-child{font-weight:600;color:var(--dark);background:var(--bg-soft)}
.compare-table tbody .col-good{color:var(--primary-deep);font-weight:600;background:var(--primary-soft)}
.compare-table tbody tr:last-child td{border-bottom:none}
.scroll-tip{display:none;text-align:center;font-size:12.5px;color:var(--muted);margin-top:10px}

.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:40px}
.stat{padding:30px 20px;text-align:center}
.stat strong{display:block;font-size:32px;font-weight:800;color:var(--primary);letter-spacing:1px}
.stat span{display:block;margin-top:6px;font-size:14px;color:var(--muted)}

.reviews-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:40px}
.review-card{padding:24px}
.review-head{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.avatar{width:44px;height:44px;border-radius:50%;background:var(--primary);color:#fff;font-size:18px;font-weight:700;display:flex;align-items:center;justify-content:center;flex:none}
.review-name{font-size:15px;font-weight:600;color:var(--dark)}
.stars{color:#ffb400;font-size:14px;letter-spacing:2px;margin-top:2px}
.review-text{font-size:14px;color:var(--text)}

.version-card{max-width:880px;margin:40px auto 0;padding:34px 38px}
.version-head{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:18px}
.ver-badge{background:var(--primary);color:#fff;font-size:16px;font-weight:700;padding:6px 16px;border-radius:999px}
.ver-date{font-size:14px;color:var(--muted)}
.changelog li{position:relative;padding:8px 0 8px 22px;font-size:14.5px;color:var(--text)}
.changelog li::before{content:"";position:absolute;left:2px;top:50%;transform:translateY(-50%);width:8px;height:8px;border-radius:50%;background:var(--primary)}

.faq-list{max-width:880px;margin:40px auto 0}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);margin-bottom:14px;overflow:hidden;box-shadow:var(--shadow);transition:box-shadow .25s}
.faq-item.open{box-shadow:var(--shadow-hover)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;background:none;border:none;font-size:15.5px;font-weight:600;color:var(--dark);cursor:pointer;text-align:left}
.faq-icon{position:relative;width:18px;height:18px;flex:none}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);background:var(--primary);border-radius:2px;transition:transform .25s}
.faq-icon::before{width:2px;height:16px}
.faq-icon::after{width:16px;height:2px}
.faq-item.open .faq-icon::before{transform:translate(-50%,-50%) rotate(90deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 22px 18px;font-size:14.5px;color:var(--text)}

.download{padding:88px 0;background:var(--primary)}
.download h1{text-align:center;color:#fff;font-size:34px;font-weight:800;letter-spacing:1px}
.download-meta{text-align:center;color:rgba(255,255,255,.92);font-size:14px;margin-top:12px}
.download-btns{display:flex;justify-content:center;gap:18px;margin-top:28px;flex-wrap:wrap}
.download .btn-primary{background:#fff;color:var(--primary-deep);box-shadow:0 8px 24px rgba(43,47,58,.18)}
.download .btn-primary:hover{transform:translateY(-2px)}
.download .btn-outline{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.85)}
.download .btn-outline:hover{background:rgba(255,255,255,.14);transform:translateY(-2px)}
.download-tip{text-align:center;color:#fff;font-size:15px;margin-top:24px}

.footer{background:var(--dark);color:#aeb4c2;padding:26px 0;text-align:center;font-size:14px}
.footer a{color:#fff;font-weight:600;text-decoration:none}

.to-top{position:fixed;right:24px;bottom:28px;width:46px;height:46px;border-radius:50%;background:var(--primary);color:#fff;font-size:20px;border:none;cursor:pointer;box-shadow:0 8px 20px rgba(185,58,134,.35);opacity:0;visibility:hidden;transform:translateY(12px);transition:all .3s;z-index:99}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--primary-deep)}

@media (max-width:1024px){
  .works-grid{grid-template-columns:repeat(2,1fr)}
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .reviews-grid{grid-template-columns:repeat(2,1fr)}
  .hero-text h1{font-size:34px}
  .menu{gap:12px}
}

@media (max-width:768px){
  .menu{display:none}
  .nav-inner{gap:12px}
  .nav-btn{margin-left:auto}
  .hero{padding:32px 0 52px}
  .hero-inner{grid-template-columns:1fr;gap:32px}
  .hero-text h1{font-size:28px}
  .hero-desc{font-size:15px}
  .hero-btns{flex-direction:column;align-items:stretch}
  .hero-btns .btn{width:100%}
  .section{padding:56px 0}
  .sec-title{font-size:24px}
  .works-grid,.features-grid,.reviews-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .compare-table{min-width:620px}
  .scroll-tip{display:block}
  .intro-card{padding:26px 22px}
  .version-card{padding:26px 22px}
  .download{padding:64px 0}
  .download h1{font-size:26px}
  .download-meta{font-size:12px;white-space:nowrap}
  .download-btns{flex-direction:column;align-items:stretch;margin-top:22px}
  .download-btns .btn{width:100%}
  .download-tip{font-size:14px}
  .to-top{right:16px;bottom:20px;width:42px;height:42px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .nav,.work-card,.feature-card,.stat,.review-card,.faq-item,.faq-icon::before,.faq-icon::after,.to-top,.btn,.menu a{transition:none}
}