:root{
  --primary:#f76aa8;
  --primary-deep:#e64b96;
  --primary-soft:#fff0f6;
  --dark:#33202b;
  --text:#4b3541;
  --muted:#8a6f7c;
  --border:#f3d9e4;
  --bg:#fffafc;
  --card:#ffffff;
  --shadow:0 12px 30px rgba(230,75,150,.12);
  --shadow-hover:0 20px 44px rgba(230,75,150,.2);
  --radius:16px;
  --container:1160px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;background:var(--bg);color:var(--text);line-height:1.75;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
img{display:block;width:100%;height:auto;border:0}
ul{list-style:none}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:84px 0}
.sec-alt{background:#fff}
.sec-head{text-align:center;margin-bottom:48px}
.sec-head h2{font-size:32px;color:var(--dark);font-weight:700;letter-spacing:1px}
.sec-head h2::after{content:"";display:block;width:56px;height:4px;border-radius:2px;background:linear-gradient(90deg,var(--primary),var(--primary-deep));margin:14px auto 0}
.sec-head p{color:var(--muted);font-size:15px;margin-top:12px}
.btn{display:inline-block;border-radius:999px;font-weight:600;text-align:center;transition:all .25s ease;border:2px solid transparent;cursor:pointer}
.btn-primary,.btn-outline{padding:14px 36px;font-size:16px}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-deep);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.btn-outline{background:transparent;color:var(--primary-deep);border-color:var(--primary)}
.btn-outline:hover{background:var(--primary-soft);transform:translateY(-2px);box-shadow:var(--shadow)}
/* ===== 顶部导航 ===== */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,250,252,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.nav-inner{max-width:var(--container);margin:0 auto;padding:0 24px;height:64px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.logo{display:inline-flex;align-items:center;min-height:44px;font-size:24px;font-weight:800;color:var(--primary-deep);letter-spacing:1px;white-space:nowrap}
.nav-menu{display:flex;gap:22px}
.nav-menu a{font-size:15px;color:var(--text);padding:6px 2px;border-bottom:2px solid transparent;transition:color .2s}
.nav-menu a:hover,.nav-menu a.active{color:var(--primary-deep);border-bottom-color:var(--primary)}
.nav-btn{flex-shrink:0;display:inline-flex;align-items:center;min-height:44px;background:var(--primary);color:#fff;font-size:14px;font-weight:600;padding:8px 20px;border-radius:999px;transition:all .25s}
.nav-btn:hover{background:var(--primary-deep);transform:translateY(-1px)}
/* ===== Hero ===== */
.hero{padding:150px 0 90px;background:radial-gradient(900px 480px at 85% -10%,#ffe3ee 0%,transparent 60%),linear-gradient(180deg,#fff5f9 0%,var(--bg) 100%)}
.hero-inner{display:flex;align-items:center;gap:64px}
.hero-text{flex:1}
.hero-text h1{font-size:44px;color:var(--dark);font-weight:800;line-height:1.35}
.hero-text h1 .ver{display:inline-block;vertical-align:middle;margin-left:12px;font-size:16px;font-weight:600;color:var(--primary-deep);background:var(--primary-soft);border:1px solid var(--border);border-radius:999px;padding:3px 14px}
.hero-desc{font-size:16px;color:var(--text);margin:22px 0 34px;max-width:560px}
.hero-btns{display:flex;gap:18px;flex-wrap:wrap}
.hero-img{flex:0 0 300px}
.hero-img .img-card{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-hover);aspect-ratio:2/3;background:var(--primary-soft)}
/* ===== 作品预览 ===== */
.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 ease,box-shadow .3s ease}
.work-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
/* ===== 产品介绍 ===== */
.intro{padding:84px 0;background:#fff}
.intro-body{max-width:820px;margin:0 auto;font-size:16px;color:var(--text)}
.intro-body p+p{margin-top:16px}
.intro-points{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:40px}
.ipoint{background:var(--primary-soft);border:1px solid var(--border);border-radius:var(--radius);padding:20px 24px;text-align:center;transition:transform .3s,box-shadow .3s}
.ipoint:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.ipoint h3{font-size:17px;color:var(--primary-deep);margin-bottom:6px}
.ipoint p{font-size:14px;color:var(--muted)}
/* ===== 核心功能 ===== */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.f-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:30px 26px;transition:transform .3s,box-shadow .3s}
.f-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.f-icon{width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,var(--primary),var(--primary-deep));display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.f-icon svg{width:26px;height:26px;stroke:#fff;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.f-card h3{font-size:18px;color:var(--dark);margin-bottom:8px}
.f-card p{font-size:14px;color:var(--muted)}
/* ===== 优势对比 ===== */
.compare-wrap{max-width:860px;margin:0 auto}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--radius)}
.compare-table{width:100%;border-collapse:collapse;background:var(--card)}
.compare-table th,.compare-table td{padding:15px 20px;text-align:center;border-bottom:1px solid var(--border);font-size:15px;white-space:nowrap}
.compare-table thead th{background:var(--dark);color:#fff;font-weight:600}
.compare-table thead th.col-best{background:var(--primary-deep)}
.compare-table tbody td:first-child{color:var(--muted);text-align:left;width:26%}
.compare-table tbody td.col-best{background:var(--primary-soft);color:var(--primary-deep);font-weight:600}
.compare-table tbody td.plain{background:#f7f3f5;color:var(--muted)}
.compare-table tbody tr:last-child td{border-bottom:0}
.table-tip{display:none;text-align:center;font-size:14px;color:var(--muted);margin-top:14px}
/* ===== 平台数据 ===== */
.data{padding:84px 0;background:linear-gradient(135deg,var(--primary-deep),var(--primary))}
.data .sec-head h2{color:#fff}
.data .sec-head h2::after{background:rgba(255,255,255,.85)}
.data .sec-head p{color:rgba(255,255,255,.85)}
.data-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.d-card{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);border-radius:var(--radius);padding:30px 20px;text-align:center;transition:transform .3s,background .3s}
.d-card:hover{transform:translateY(-5px);background:rgba(255,255,255,.22)}
.d-num{font-size:40px;font-weight:800;color:#fff;line-height:1.2}
.d-label{font-size:14px;color:rgba(255,255,255,.9);margin-top:8px}
/* ===== 用户评价 ===== */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.r-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px;transition:transform .3s,box-shadow .3s}
.r-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.r-top{display:flex;align-items:center;gap:14px;margin-bottom:16px}
.r-avatar{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:#fff;font-size:20px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.r-name{font-size:16px;font-weight:600;color:var(--dark)}
.r-stars{color:#ffb400;font-size:15px;letter-spacing:2px}
.r-text{font-size:14px;color:var(--text)}
/* ===== 版本更新 ===== */
.update-card{max-width:820px;margin:0 auto;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:38px 42px;box-shadow:var(--shadow)}
.update-head{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px;margin-bottom:22px;padding-bottom:20px;border-bottom:1px solid var(--border)}
.update-ver{font-size:22px;font-weight:800;color:var(--primary-deep)}
.update-ver .tag{display:inline-block;margin-left:10px;font-size:13px;font-weight:600;color:#fff;background:linear-gradient(135deg,var(--primary),var(--primary-deep));border-radius:999px;padding:2px 12px}
.update-date{font-size:14px;color:var(--muted)}
.update-list li{position:relative;padding-left:30px;font-size:15px;color:var(--text);margin-bottom:14px}
.update-list li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 4px var(--primary-soft)}
/* ===== FAQ ===== */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:16px;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:16px;background:none;border:0;padding:20px 24px;font-size:16px;font-weight:600;color:var(--dark);cursor:pointer;text-align:left;font-family:inherit}
.faq-icon{position:relative;width:22px;height:22px;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:3px;right:3px;top:10px;height:2px}
.faq-icon::after{top:3px;bottom:3px;left:10px;width:2px}
.faq-item.open .faq-icon::after{transform:rotate(90deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 24px 22px;font-size:14px;color:var(--muted)}
.faq-item.open .faq-a{max-height:280px}
/* ===== 下载区域 ===== */
.download{padding:90px 0;background:radial-gradient(700px 400px at 15% 0%,#ffe3ee 0%,transparent 60%),linear-gradient(180deg,#fff5f9 0%,var(--bg) 100%);text-align:center}
.download h1{font-size:40px;color:var(--dark);font-weight:800}
.download h1 .ver{display:inline-block;vertical-align:middle;margin-left:12px;font-size:16px;font-weight:600;color:var(--primary-deep);background:var(--primary-soft);border:1px solid var(--border);border-radius:999px;padding:3px 14px}
.d-meta{font-size:14px;color:var(--muted);margin:16px 0 36px}
.d-btns{display:flex;justify-content:center;gap:20px;flex-wrap:wrap}
.d-btn{display:inline-block;border-radius:999px;font-size:17px;font-weight:700;padding:17px 46px;transition:all .25s;border:2px solid transparent}
.d-btn-android{background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:#fff}
.d-btn-android:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.d-btn-ios{background:#fff;color:var(--primary-deep);border-color:var(--primary)}
.d-btn-ios:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.d-tip{font-size:15px;color:var(--primary-deep);margin-top:28px}
/* ===== 页脚 ===== */
.footer{border-top:1px solid var(--border);padding:30px 0;text-align:center;font-size:14px;color:var(--muted)}
.footer a{color:var(--primary-deep);font-weight:600}
.footer a:hover{color:var(--primary)}
/* ===== 返回顶部 ===== */
.back-top{position:fixed;right:26px;bottom:30px;width:46px;height:46px;border-radius:50%;border:0;background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;pointer-events:none;transform:translateY(12px);transition:all .3s ease;box-shadow:var(--shadow-hover);z-index:99}
.back-top.show{opacity:1;pointer-events:auto;transform:translateY(0)}
.back-top svg{width:20px;height:20px;stroke:#fff;fill:none;stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round}
/* ===== 响应式 ===== */
@media (max-width:1080px){
  .nav-menu{gap:16px}
  .nav-menu a{font-size:14px}
  .container{padding:0 20px}
}
@media (max-width:900px){
  .works-grid{grid-template-columns:repeat(2,1fr)}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .review-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:768px){
  .nav-menu{display:none}
  .nav-inner{padding:0 20px}
  .section{padding:60px 0}
  .sec-head h2{font-size:26px}
  .hero{padding:120px 0 60px}
  .hero-inner{flex-direction:column;gap:36px}
  .hero-text h1{font-size:30px}
  .hero-text h1 .ver{font-size:14px;margin-left:8px}
  .hero-desc{font-size:15px;margin:18px 0 26px}
  .hero-btns{width:100%;flex-direction:column;gap:14px}
  .hero-btns .btn{width:100%;padding:14px 20px}
  .hero-img{flex:none;width:100%;max-width:340px;margin:0 auto}
  .works-grid{grid-template-columns:1fr;gap:18px}
  .intro-points{grid-template-columns:1fr;gap:14px}
  .feature-grid{grid-template-columns:1fr;gap:18px}
  .data-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .d-num{font-size:32px}
  .review-grid{grid-template-columns:1fr;gap:18px}
  .update-card{padding:26px 22px}
  .update-head{flex-direction:column;align-items:flex-start}
  .download{padding:70px 0}
  .download h1{font-size:28px}
  .download h1 .ver{font-size:14px;margin-left:8px}
  .d-meta{font-size:12px;white-space:nowrap;margin:14px 0 28px}
  .d-btns{flex-direction:column;gap:14px}
  .d-btn{width:100%;padding:15px 20px;font-size:16px}
  .compare-table{min-width:560px}
  .compare-table th,.compare-table td{padding:13px 16px;font-size:14px}
  .table-tip{display:block}
  .back-top{right:16px;bottom:20px;width:42px;height:42px}
}
@media (max-width:420px){
  .d-num{font-size:28px}
}