*{margin:0;padding:0;box-sizing:border-box}
:root{
  --primary:#ff5d8f;
  --primary-deep:#f5387a;
  --primary-soft:#ffeef5;
  --deep:#35243d;
  --border:#ffdce8;
  --bg:#fffbfd;
  --bg-soft:#fff3f8;
  --card:#ffffff;
  --text:#3d3040;
  --text-sub:#9b8a95;
  --radius:16px;
  --shadow:0 8px 24px rgba(255,93,143,.10);
  --shadow-hover:0 16px 36px rgba(255,93,143,.20);
  --grad:linear-gradient(135deg,var(--primary),var(--primary-deep));
}
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;background:var(--bg);color:var(--text);font-size:15px;line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
button{font-family:inherit;cursor:pointer}

.container{max-width:1180px;margin:0 auto;padding:0 24px}
.sec{padding:76px 0}
.sec-alt{background:var(--bg-soft)}
.sec-head{text-align:center;margin-bottom:44px}
.sec-title{font-size:30px;font-weight:800;color:var(--deep)}
.sec-sub{margin-top:10px;color:var(--text-sub);font-size:15px}

.btn{display:inline-flex;align-items:center;justify-content:center;height:52px;padding:0 30px;border-radius:999px;background:var(--grad);color:#fff;font-size:16px;font-weight:600;box-shadow:0 10px 24px rgba(255,93,143,.28);transition:transform .25s,box-shadow .25s;border:none;white-space:nowrap}
.btn:hover{transform:translateY(-3px);box-shadow:0 16px 32px rgba(255,93,143,.36)}
.btn-ghost{background:#fff;color:var(--primary-deep);border:2px solid var(--primary);box-shadow:0 10px 24px rgba(255,93,143,.14)}
.btn-ghost:hover{background:var(--primary-soft);box-shadow:0 16px 32px rgba(255,93,143,.22)}
.btn-sm{height:38px;padding:0 18px;font-size:14px;box-shadow:0 6px 16px rgba(255,93,143,.24)}

.nav{position:sticky;top:0;z-index:100;background:var(--card);border-bottom:1px solid var(--border);transition:box-shadow .3s}
.nav.scrolled{box-shadow:0 8px 24px rgba(255,93,143,.10)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:64px;gap:20px}
.logo{font-size:22px;font-weight:800;color:var(--deep);white-space:nowrap}
.logo em{font-style:normal;color:var(--primary)}
.nav-links{display:flex;align-items:center;gap:20px}
.nav-links a{font-size:14px;color:var(--text);transition:color .2s;white-space:nowrap}
.nav-links a:hover{color:var(--primary)}

.hero{padding:84px 0 88px;background:radial-gradient(620px 320px at 12% 8%,var(--bg-soft),transparent 70%),radial-gradient(540px 300px at 88% 92%,var(--bg-soft),transparent 70%),var(--bg)}
.hero-in{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
.hero-badge{display:inline-block;padding:7px 16px;border-radius:999px;background:var(--primary-soft);color:var(--primary-deep);font-size:13px;font-weight:600;margin-bottom:20px}
.hero h1{font-size:42px;line-height:1.25;font-weight:800;color:var(--deep)}
.hero h1 .v,.dl-in h1 .v{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero h1 .v{margin-left:6px}
.hero-desc{margin:20px 0 30px;color:var(--text-sub);font-size:16px;line-height:1.9;max-width:560px}
.btns{display:flex;gap:16px;flex-wrap:wrap}
.hero-img img{width:min(340px,100%);height:auto;margin:0 auto;border-radius:22px;box-shadow:0 24px 48px rgba(255,93,143,.22);border:8px solid var(--card)}

.works-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.work-card,.feat-card,.stat-card,.rv-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s}
.work-card:hover,.feat-card:hover,.stat-card:hover,.rv-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.work-card{padding:12px}
.work-card img{width:100%;height:auto;border-radius:12px}
.work-card .cap{text-align:center;padding:12px 4px 6px;font-weight:600;color:var(--deep);font-size:15px}

.prod-inner{max-width:840px;margin:0 auto;text-align:center}
.prod-inner p{color:var(--text-sub);font-size:16px;line-height:2;margin-bottom:14px}
.chips{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:26px}
.chip{padding:8px 18px;border:1px solid var(--border);border-radius:999px;background:var(--card);color:var(--primary-deep);font-size:14px;font-weight:600;box-shadow:var(--shadow)}

.feat{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feat-card{padding:30px 26px}
.feat-icon{width:54px;height:54px;border-radius:14px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.feat-icon svg{width:26px;height:26px}
.feat-card h3{font-size:18px;color:var(--deep);margin-bottom:10px}
.feat-card p{color:var(--text-sub);font-size:14px;line-height:1.8}

.table-scroll{overflow-x:auto}
.cmp{width:100%;min-width:480px;border-collapse:collapse;background:var(--card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.cmp th,.cmp td{padding:15px 20px;text-align:center;font-size:14px}
.cmp thead th{background:var(--deep);color:#fff;font-weight:600}
.cmp thead th:nth-child(2){background:var(--grad)}
.cmp td:first-child{text-align:left;color:var(--text-sub)}
.cmp tbody td:nth-child(2){background:var(--primary-soft);color:var(--primary-deep);font-weight:600}
.cmp tbody td:nth-child(3){color:var(--text-sub)}
.cmp tbody tr+tr td{border-top:1px solid var(--border)}

.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.stat-card{padding:34px 18px;text-align:center}
.num{font-size:38px;font-weight:800;color:var(--primary);line-height:1.2}
.stat-card .label{margin-top:8px;color:var(--text-sub);font-size:14px}

.rv{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.rv-card{padding:26px}
.rv-head{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.rv-ava{width:46px;height:46px;border-radius:50%;background:var(--primary-soft);color:var(--primary-deep);font-size:20px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.rv-name{font-weight:700;color:var(--deep);display:block;font-size:15px}
.rv-stars{color:#ffb03a;font-size:14px;letter-spacing:2px}
.rv-txt{color:var(--text-sub);font-size:14px;line-height:1.85}

.ver-card{max-width:760px;margin:0 auto;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:36px 40px;box-shadow:var(--shadow)}
.ver-top{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:22px}
.ver-no{font-size:34px;font-weight:800;color:var(--primary-deep)}
.ver-date{padding:6px 14px;border-radius:999px;background:var(--primary-soft);color:var(--primary-deep);font-size:13px;font-weight:600}
.ver-list li{position:relative;padding:12px 0 12px 26px;color:var(--text);font-size:15px;border-bottom:1px dashed var(--border)}
.ver-list li:last-child{border-bottom:none}
.ver-list li::before{content:"";position:absolute;left:2px;top:21px;width:8px;height:8px;border-radius:50%;background:var(--primary)}

.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:14px;margin-bottom:14px;box-shadow:var(--shadow);overflow:hidden}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:18px 22px;background:none;border:none;font-size:16px;font-weight:600;color:var(--deep);text-align:left}
.faq-q svg{flex-shrink:0;color:var(--primary);transition:transform .3s}
.faq-item.open .faq-q svg{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;color:var(--text-sub);font-size:14px;line-height:1.85}
.faq-item.open .faq-a{max-height:320px}
.faq-a p{padding:0 22px 20px}

.dl{background:radial-gradient(640px 320px at 50% 0%,var(--primary-soft),transparent 70%),var(--bg)}
.dl-in{text-align:center;max-width:820px;margin:0 auto}
.dl-in h1{font-size:38px;font-weight:800;color:var(--deep)}
.dl-meta{margin:14px 0 30px;color:var(--text-sub);font-size:14px}
.dl .btns{justify-content:center}
.dl-tip{margin-top:26px;color:var(--primary-deep);font-size:14px}

.footer{background:var(--deep);color:#c9bacd;text-align:center;padding:38px 0}
.footer a{color:#ffb0cd;text-decoration:none}
.footer a:hover{color:#fff}
.f-copy{font-size:14px}
.f-note{margin-top:8px;font-size:13px;opacity:.75}

#toTop{position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:50%;background:var(--grad);color:#fff;border:none;display:flex;align-items:center;justify-content:center;box-shadow:0 10px 24px rgba(255,93,143,.35);opacity:0;pointer-events:none;transform:translateY(12px);transition:opacity .3s,transform .3s;z-index:90}
#toTop.show{opacity:1;pointer-events:auto;transform:none}
#toTop svg{width:20px;height:20px}

@media (max-width:1024px){
  .nav-links{gap:14px}
  .nav-links a{font-size:13px}
}
@media (max-width:900px){
  .works-grid{grid-template-columns:repeat(2,1fr)}
  .feat{grid-template-columns:repeat(2,1fr)}
  .rv{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .sec{padding:56px 0}
  .nav-links{display:none}
  .sec-title{font-size:26px}
  .hero{padding:56px 0 60px}
  .hero-in{grid-template-columns:1fr;gap:40px;text-align:center}
  .hero h1{font-size:30px}
  .hero-desc{margin:16px auto 26px;font-size:15px}
  .btns{flex-direction:column;width:100%}
  .btns .btn{width:100%}
  .hero-img img{width:min(300px,100%)}
  .works-grid{grid-template-columns:1fr}
  .feat{grid-template-columns:1fr}
  .rv{grid-template-columns:1fr}
  .num{font-size:32px}
  .cmp{min-width:0;table-layout:fixed}
  .cmp th,.cmp td{padding:12px 8px;font-size:12px}
  .ver-card{padding:26px 22px}
  .ver-no{font-size:28px}
  .dl-in h1{font-size:28px}
  .dl-meta{font-size:12px;white-space:nowrap}
  .dl-tip{font-size:13px}
  .faq-q{font-size:15px}
}
@media (max-width:480px){
  .sec-title{font-size:24px}
  .stats{gap:14px}
  .stat-card{padding:24px 12px}
  .num{font-size:28px}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}