:root{
  --main:#ff4f88;
  --main-deep:#e63770;
  --main-soft:#ffe4ef;
  --deep:#2b1b26;
  --deep-2:#46303c;
  --border:#ffd2e3;
  --bg:#fff7fa;
  --card:#fff;
  --text:#3a2430;
  --muted:#8c6a7c;
  --radius:16px;
  --grad:linear-gradient(135deg,var(--main),var(--main-deep));
  --shadow:0 6px 18px rgba(255,79,136,.10);
  --shadow-hover:0 14px 30px rgba(255,79,136,.20);
}
*{margin:0;padding:0;box-sizing:border-box}
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}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%}
ul{list-style:none}
.container{max-width:1160px;margin:0 auto;padding:0 24px}
section{padding:84px 0}

/* header */
.header{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:box-shadow .3s,border-color .3s}
.header.scrolled{border-color:var(--border);box-shadow:0 4px 16px rgba(43,27,38,.08)}
.header .container{display:flex;align-items:center;height:64px}
.logo{font-size:22px;font-weight:800;color:var(--main-deep);white-space:nowrap}
.logo em{font-style:normal;color:var(--main)}
.nav-links{display:flex;gap:2px;margin-left:26px;flex:1;min-width:0}
.nav-links a{padding:7px 10px;font-size:14px;color:var(--deep-2);border-radius:8px;white-space:nowrap;transition:color .2s,background .2s}
.nav-links a:hover{color:var(--main);background:var(--main-soft)}
.nav-btn{margin-left:auto;padding:6px 16px;font-size:14px;font-weight:700;color:#fff;background:var(--grad);border-radius:999px;box-shadow:0 4px 12px rgba(255,79,136,.35);white-space:nowrap;transition:transform .2s,box-shadow .2s}
.nav-btn:hover{transform:translateY(-2px);box-shadow:0 8px 18px rgba(255,79,136,.42)}

/* hero */
.hero{padding:148px 0 92px;background:linear-gradient(180deg,var(--main-soft),var(--bg) 72%)}
.hero .container{display:flex;align-items:center;gap:60px}
.hero-info{flex:1;min-width:0}
.hero h1{font-size:46px;line-height:1.3;font-weight:900;color:var(--deep)}
.ver{display:inline-block;margin-left:10px;padding:4px 14px;font-size:16px;font-weight:800;color:#fff;background:var(--grad);border-radius:999px;vertical-align:7px}
.hero-desc{margin:22px 0 34px;font-size:17px;color:var(--deep-2);max-width:560px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 30px;font-size:16px;font-weight:700;color:#fff;background:var(--grad);border-radius:12px;box-shadow:0 8px 20px rgba(255,79,136,.30);transition:transform .2s,box-shadow .2s}
.btn:hover{transform:translateY(-3px);box-shadow:0 12px 26px rgba(255,79,136,.40)}
.btn-ghost{background:#fff;color:var(--main-deep);border:1px solid var(--border);box-shadow:0 6px 16px rgba(255,79,136,.12)}
.btn-ghost:hover{box-shadow:0 10px 22px rgba(255,79,136,.22)}
.hero-img{flex:0 0 330px}
.hero-img img{width:100%;height:auto;border-radius:20px;box-shadow:0 22px 44px rgba(255,79,136,.25)}

/* section head */
.sec-head{text-align:center;margin-bottom:48px}
.sec-tag{display:inline-block;padding:5px 16px;font-size:13px;font-weight:700;color:var(--main-deep);background:var(--main-soft);border-radius:999px;margin-bottom:14px}
.sec-title{font-size:34px;line-height:1.3;font-weight:900;color:var(--deep)}
.sec-sub{margin-top:10px;font-size:15px;color:var(--muted)}

/* works */
.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}
.work-card img{width:100%;height:auto}

/* intro */
.intro-wrap{display:flex;gap:44px;align-items:stretch}
.intro-text{flex:1.15;display:flex;flex-direction:column;justify-content:center;gap:18px}
.intro-text p{font-size:15.5px;color:var(--deep-2)}
.intro-points{flex:.85;display:flex;flex-direction:column;gap:16px}
.intro-point{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:20px 22px;transition:transform .25s,box-shadow .25s}
.intro-point:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.intro-point h3{font-size:16px;font-weight:800;color:var(--deep);margin-bottom:6px}
.intro-point p{font-size:14px;color:var(--muted)}

/* features */
.features-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:28px 24px}
.feat-icon{width:52px;height:52px;border-radius:14px;background:var(--main-soft);color:var(--main-deep);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.feat-icon svg{width:26px;height:26px}
.feat-card h3{font-size:18px;font-weight:800;color:var(--deep);margin-bottom:8px}
.feat-card p{font-size:14px;color:var(--deep-2)}

/* compare */
.compare-wrap{max-width:920px;margin:0 auto;overflow-x:auto}
.compare-table{width:100%;min-width:640px;table-layout:fixed;border-collapse:separate;border-spacing:0;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
.compare-table th,.compare-table td{padding:15px 14px;text-align:center;font-size:14.5px;border-bottom:1px solid var(--border)}
.compare-table thead th{background:var(--grad);color:#fff;font-weight:800;font-size:15px}
.compare-table tbody th{background:var(--main-soft);color:var(--deep);font-weight:700;text-align:left}
.compare-table tbody tr:last-child th,.compare-table tbody tr:last-child td{border-bottom:none}
.compare-table .hl{background:#fff0f6;color:var(--main-deep);font-weight:700}
.compare-table tbody tr:hover td{background:#fff5f9}
.compare-note{margin-top:18px;text-align:center;font-size:13px;color:var(--muted)}

/* stats */
.stats{background:linear-gradient(135deg,#3a1f30,var(--deep) 55%,#4a2336)}
.stats .sec-title{color:#fff}
.stats .sec-sub{color:rgba(255,255,255,.65)}
.stats .sec-tag{background:rgba(255,255,255,.14);color:#ffd9e6}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-card{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);padding:34px 16px;text-align:center;transition:transform .25s,background .25s}
.stat-card:hover{transform:translateY(-5px);background:rgba(255,255,255,.12)}
.stat-num{font-size:42px;line-height:1.2;font-weight:900;color:#fff}
.stat-num i{font-style:normal;color:#ff9dbe;font-size:.6em;font-weight:800}
.stat-label{margin-top:8px;font-size:14px;color:rgba(255,255,255,.72)}

/* reviews */
.reviews-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.review-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px 24px}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{width:46px;height:46px;flex-shrink:0;border-radius:50%;background:var(--grad);color:#fff;font-size:18px;font-weight:800;display:flex;align-items:center;justify-content:center}
.review-meta{min-width:0}
.review-name{font-size:15px;font-weight:800;color:var(--deep)}
.stars{display:block;margin-top:2px;font-size:13px;color:#ffb400;letter-spacing:2px}
.review-text{font-size:14px;color:var(--deep-2)}

/* hover lift shared by work/feat/review cards */
.work-card,.feat-card,.review-card{transition:transform .25s,box-shadow .25s}
.work-card:hover,.feat-card:hover,.review-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}

/* updates */
.update-card{max-width:780px;margin:0 auto;background:var(--card);border:1px solid var(--border);border-radius:20px;padding:36px 40px;box-shadow:var(--shadow)}
.update-head{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;padding-bottom:22px;border-bottom:1px dashed var(--border);margin-bottom:8px}
.ver-badge{font-size:22px;font-weight:900;color:#fff;background:var(--grad);padding:8px 20px;border-radius:12px;box-shadow:0 6px 16px rgba(255,79,136,.30)}
.update-date{font-size:14px;color:var(--muted)}
.update-list{padding-top:12px}
.update-list li{position:relative;padding:11px 0 11px 26px;font-size:15px;color:var(--deep-2)}
.update-list li::before{content:"";position:absolute;left:4px;top:20px;width:8px;height:8px;border-radius:50%;background:var(--grad)}

/* faq */
.faq-list{max-width:820px;margin:0 auto}
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:14px;margin-bottom:14px;overflow:hidden;transition:box-shadow .25s}
.faq-item.open{box-shadow:var(--shadow)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:19px 22px;background:none;border:none;cursor:pointer;font:inherit;font-size:16px;font-weight:700;color:var(--deep);text-align:left}
.faq-icon{position:relative;width:18px;height:18px;flex-shrink:0}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;top:8px;left:0;width:18px;height:2px;border-radius:2px;background:var(--main);transition:transform .3s}
.faq-icon::after{transform:rotate(90deg)}
.faq-item.open .faq-icon::after{transform:rotate(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 22px 20px;font-size:15px;color:var(--deep-2)}

/* download */
.download{background:linear-gradient(180deg,var(--bg),var(--main-soft))}
.dl-card{max-width:800px;margin:0 auto;background:var(--card);border:1px solid var(--border);border-radius:24px;padding:52px 40px;text-align:center;box-shadow:var(--shadow)}
.dl-card h1{font-size:34px;line-height:1.3;font-weight:900;color:var(--deep)}
.dl-card h1 .ver{vertical-align:6px;margin-left:10px;font-size:15px}
.dl-meta{margin:16px 0 34px;display:flex;justify-content:center;gap:26px;font-size:14px;color:var(--muted);white-space:nowrap}
.dl-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.dl-tip{margin-top:26px;font-size:14px;color:var(--deep-2)}

/* footer */
.footer{background:var(--deep);color:rgba(255,255,255,.65);text-align:center;padding:30px 20px;font-size:14px}
.footer a{color:#fff;font-weight:700}
.footer a:hover{color:#ff9dbe}

/* back top */
.back-top{position:fixed;right:26px;bottom:34px;z-index:90;width:46px;height:46px;border:none;border-radius:50%;background:var(--grad);color:#fff;font-size:20px;line-height:1;cursor:pointer;box-shadow:0 8px 20px rgba(255,79,136,.40);opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity .3s,transform .3s,visibility .3s}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{transform:translateY(-3px)}

/* responsive */
@media (max-width:1024px){
  .nav-links{display:none}
  .hero h1{font-size:38px}
  .hero-img{flex-basis:300px}
  .works-grid{grid-template-columns:repeat(2,1fr)}
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .reviews-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .intro-wrap{flex-direction:column}
}
@media (max-width:768px){
  section{padding:64px 0}
  .container{padding:0 20px}
  .header .container{height:58px}
  .logo{font-size:20px}
  .nav-btn{padding:6px 14px;font-size:13px}
  .hero{padding:104px 0 56px}
  .hero .container{flex-direction:column;gap:36px}
  .hero-info{text-align:center}
  .hero h1{font-size:30px}
  .ver{font-size:13px;padding:3px 10px;vertical-align:5px}
  .hero-desc{margin:16px auto 28px;font-size:15px;max-width:100%}
  .hero-btns{flex-direction:column;width:100%}
  .hero-btns .btn{width:100%;padding:14px 20px}
  .hero-img{flex:none;width:100%}
  .hero-img img{width:min(78%,300px);margin:0 auto}
  .sec-head{margin-bottom:36px}
  .sec-title{font-size:26px}
  .sec-sub{font-size:14px}
  .works-grid{grid-template-columns:1fr;gap:20px}
  .features-grid{grid-template-columns:1fr;gap:16px}
  .reviews-grid{grid-template-columns:1fr;gap:16px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .stat-num{font-size:32px}
  .compare-table{min-width:0}
  .compare-table th,.compare-table td{padding:12px 6px;font-size:13px}
  .update-card{padding:28px 22px}
  .ver-badge{font-size:18px;padding:6px 14px}
  .dl-card{padding:40px 20px}
  .dl-card h1{font-size:26px}
  .dl-card h1 .ver{font-size:13px}
  .dl-meta{margin:14px 0 28px;gap:10px;font-size:12px}
  .dl-btns{flex-direction:column}
  .dl-btns .btn{width:100%}
  .back-top{right:16px;bottom:22px;width:42px;height:42px}
}