:root{
  --primary:#ff5c8a;
  --primary-deep:#e6457b;
  --primary-soft:#ffeef3;
  --primary-softer:#fff7fa;
  --dark:#2c2430;
  --text:#43384a;
  --muted:#6b5f72;
  --border:#f0e2e8;
  --bg:#ffffff;
  --bg-soft:#fdf6f9;
  --shadow-sm:0 2px 10px rgba(230,69,123,.08);
  --shadow-md:0 12px 28px rgba(230,69,123,.16);
  --radius:16px;
}

*{margin:0;padding:0;box-sizing:border-box}

html{scroll-behavior:smooth;scroll-padding-top:76px}

body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}

a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
ul{list-style:none}
button{font-family:inherit;border:none;background:none;cursor:pointer}

:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

.container{width:100%;max-width:1120px;margin:0 auto;padding:0 24px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:999px;padding:12px 28px;font-size:15px;font-weight:600;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-deep);transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-ghost{border:1px solid var(--primary);color:var(--primary);background:transparent}
.btn-ghost:hover{background:var(--primary-soft);transform:translateY(-2px)}
.btn-white{background:#fff;color:var(--primary-deep)}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(0,0,0,.18)}
.btn-outline{border:1px solid rgba(255,255,255,.75);color:#fff;background:transparent}
.btn-outline:hover{background:rgba(255,255,255,.14);transform:translateY(-2px)}

/* 导航 */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:var(--bg);border-bottom:1px solid transparent;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav.scrolled{border-bottom-color:var(--border);box-shadow:var(--shadow-sm)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:inline-flex;align-items:center;gap:8px}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#fff;font-size:15px;font-weight:800;letter-spacing:.5px;
}
.logo-text{font-size:20px;font-weight:800;color:var(--dark);letter-spacing:.5px}
.menu{display:flex;align-items:center;gap:4px}
.menu a{font-size:14px;color:var(--text);padding:8px 10px;border-radius:8px;transition:color .2s,background .2s}
.menu a:hover{color:var(--primary);background:var(--primary-softer)}
.menu a.active{color:var(--primary);font-weight:600}
.nav-download{
  font-size:13px;font-weight:600;color:#fff;background:var(--primary);
  padding:6px 16px;border-radius:999px;white-space:nowrap;
  transition:background .2s;
}
.nav-download:hover{background:var(--primary-deep)}

/* 首屏 */
.hero{background:linear-gradient(180deg,var(--primary-softer),var(--bg));padding:120px 0 72px}
.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center}
.hero-badge{
  display:inline-block;font-size:13px;font-weight:600;color:var(--primary-deep);
  background:var(--primary-soft);border:1px solid #ffd9e4;
  padding:5px 14px;border-radius:999px;margin-bottom:18px;
}
.hero h1{font-size:44px;font-weight:800;color:var(--dark);line-height:1.25;margin-bottom:16px}
.hero h1 em{font-style:normal;color:var(--primary);font-size:32px;margin-left:8px}
.hero-desc{font-size:16px;color:var(--text);margin-bottom:28px;max-width:560px}
.hero-btns{display:flex;gap:16px;margin-bottom:30px}
.hero-points{display:flex;gap:10px;flex-wrap:wrap}
.hero-points li{
  font-size:13px;color:var(--muted);background:var(--bg);
  border:1px solid var(--border);border-radius:999px;padding:5px 14px;
}
.hero-img img{
  width:100%;height:auto;border-radius:var(--radius);
  box-shadow:0 20px 40px rgba(230,69,123,.18);
}

/* 通用区块 */
.section{padding:76px 0}
.section-soft{background:var(--bg-soft)}
.section-head{text-align:center;margin-bottom:44px}
.section-head h2{font-size:32px;font-weight:800;color:var(--dark);margin-bottom:8px}
.section-head p{font-size:15px;color:var(--muted)}

/* 作品预览 */
.works-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.work-card{
  border-radius:var(--radius);overflow:hidden;background:var(--bg);
  border:1px solid var(--border);box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease;
}
.work-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.work-card img{width:100%;height:auto}

/* 产品介绍 */
.intro-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center}
.intro-text p{font-size:15px;color:var(--text);margin-bottom:16px}
.intro-list li{
  display:flex;align-items:center;gap:16px;background:var(--bg);
  border:1px solid var(--border);border-radius:var(--radius);
  padding:18px 20px;margin-bottom:14px;
  transition:transform .25s ease,box-shadow .25s ease;
}
.intro-list li:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.intro-ico{
  flex:none;display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;
  background:var(--primary-soft);color:var(--primary-deep);font-size:17px;font-weight:700;
}
.intro-list b{font-size:15px;color:var(--dark);display:block}
.intro-list p{font-size:14px;color:var(--muted);margin:0}

/* 核心功能 */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feature-card{
  background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);
  padding:28px 24px;transition:transform .25s ease,box-shadow .25s ease;
}
.feature-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.feature-ico{
  display:inline-flex;align-items:center;justify-content:center;
  width:52px;height:52px;border-radius:14px;
  background:var(--primary-soft);color:var(--primary-deep);margin-bottom:18px;
}
.feature-ico svg{width:26px;height:26px}
.feature-card h3{font-size:18px;font-weight:700;color:var(--dark);margin-bottom:10px}
.feature-card p{font-size:14px;color:var(--muted)}

/* 优势对比 */
.compare-wrap{overflow-x:auto;border-radius:var(--radius)}
.compare-table{
  width:100%;border-collapse:collapse;table-layout:fixed;background:var(--bg);
}
.compare-table th,.compare-table td{padding:15px 18px;font-size:14px;text-align:left;vertical-align:middle}
.compare-table thead th{
  font-size:15px;font-weight:700;background:var(--dark);color:#fff;
}
.compare-table thead .th-good{background:var(--primary-deep)}
.compare-table tbody td{border-bottom:1px solid var(--border)}
.compare-table tbody tr:last-child td{border-bottom:none}
.compare-table .td-good{background:var(--primary-soft);color:var(--dark)}
.compare-table .td-good::before{content:"✓ ";color:var(--primary-deep);font-weight:700}
.compare-table tbody td:last-child{background:#f6f4f8;color:var(--muted)}
.compare-table tbody td:last-child::before{content:"✕ ";color:#c9c1cc;font-weight:700}
.compare-hint{display:none;text-align:center;font-size:12px;color:var(--muted);margin-top:12px}

/* 平台数据 */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-card{
  text-align:center;background:var(--bg);border:1px solid var(--border);
  border-radius:var(--radius);padding:34px 16px;
  transition:transform .25s ease,box-shadow .25s ease;
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.stat-num{font-size:40px;font-weight:800;color:var(--primary-deep);line-height:1.2}
.stat-unit{font-size:20px;font-weight:700;color:var(--primary)}
.stat-label{font-size:14px;color:var(--muted);margin-top:10px}

/* 用户评价 */
.reviews-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.review-card{
  background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;transition:transform .25s ease,box-shadow .25s ease;
}
.review-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.review-head{display:flex;align-items:center;gap:14px;margin-bottom:16px}
.review-avatar{
  flex:none;display:inline-flex;align-items:center;justify-content:center;
  width:46px;height:46px;border-radius:50%;color:#fff;font-size:18px;font-weight:700;
}
.a1{background:#ff8fa8}.a2{background:#7ec8a8}.a3{background:#f2a65a}
.a4{background:#8fb3e8}.a5{background:#b78ae0}.a6{background:#6fc0c9}
.review-meta b{display:block;font-size:15px;color:var(--dark)}
.review-stars{font-size:14px;color:#ffb400;letter-spacing:2px}
.review-text{font-size:14px;color:var(--text)}

/* 版本更新 */
.update-card{
  max-width:760px;margin:0 auto;background:var(--bg);border:1px solid var(--border);
  border-radius:var(--radius);padding:34px 36px;box-shadow:var(--shadow-sm);
}
.update-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;flex-wrap:wrap;gap:10px}
.version-badge{
  font-size:17px;font-weight:800;color:#fff;background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  padding:7px 18px;border-radius:999px;
}
.update-date{font-size:14px;color:var(--muted)}
.update-list li{
  position:relative;padding:9px 0 9px 26px;font-size:15px;color:var(--text);
  border-bottom:1px dashed var(--border);
}
.update-list li:last-child{border-bottom:none}
.update-list li::before{
  content:"";position:absolute;left:6px;top:17px;
  width:8px;height:8px;border-radius:50%;background:var(--primary);
}

/* FAQ */
.faq-list{max-width:760px;margin:0 auto}
.faq-item{
  background:var(--bg);border:1px solid var(--border);border-radius:14px;
  margin-bottom:14px;overflow:hidden;transition:box-shadow .25s ease;
}
.faq-item.open{box-shadow:var(--shadow-sm);border-color:#ffd9e4}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;width:100%;
  padding:18px 22px;font-size:15px;font-weight:600;color:var(--dark);text-align:left;
}
.faq-icon{
  position:relative;flex:none;width:22px;height:22px;margin-left:14px;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--primary-deep);
  border-radius:2px;transform:translate(-50%,-50%);transition:transform .25s ease;
}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px}
.faq-item.open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 22px 18px;font-size:14px;color:var(--muted)}

/* 下载区域 */
.download{padding:76px 0 90px}
.download-box{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  border-radius:24px;text-align:center;padding:60px 40px;
  color:#fff;box-shadow:0 20px 44px rgba(230,69,123,.28);
}
.download-h{font-size:34px;font-weight:800;color:#fff;margin-bottom:10px}
.download-h em{font-style:normal;font-size:22px;opacity:.92;margin-left:8px}
.download-meta{font-size:13px;color:rgba(255,255,255,.85);margin-bottom:30px}
.download-btns{display:flex;gap:18px;justify-content:center;margin-bottom:26px}
.btn-lg{padding:14px 36px;font-size:16px}
.download-tip{font-size:14px;color:rgba(255,255,255,.92)}

/* 页脚 */
.footer{background:var(--dark);padding:30px 0}
.footer-inner{display:flex;justify-content:center}
.footer p{font-size:13px;color:#cbbcc6;text-align:center}
.footer-link{color:#fff;font-weight:600}
.footer-link:hover{color:var(--primary)}

/* 返回顶部 */
.to-top{
  position:fixed;right:28px;bottom:28px;z-index:99;
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:50%;
  background:var(--primary);color:#fff;box-shadow:var(--shadow-md);
  opacity:0;pointer-events:none;transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,background .2s;
}
.to-top svg{width:20px;height:20px}
.to-top.show{opacity:1;pointer-events:auto;transform:translateY(0)}
.to-top:hover{background:var(--primary-deep)}

@media (max-width:1024px){
  .menu{gap:2px}
  .menu a{font-size:13px;padding:8px 8px}
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .reviews-grid{grid-template-columns:repeat(2,1fr)}
  .works-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .intro-grid{grid-template-columns:1fr;gap:28px}
}

@media (max-width:768px){
  .menu{display:none}
  .hero{padding:104px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-copy{text-align:center}
  .hero-desc{max-width:none}
  .hero-btns{justify-content:center}
  .hero-points{justify-content:center}
}

@media (max-width:640px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .hero h1{font-size:32px}
  .hero h1 em{font-size:24px}
  .hero-desc{font-size:15px}
  .hero-btns{flex-direction:column}
  .btn{width:100%}
  .section-head h2{font-size:26px}
  .section-head{margin-bottom:32px}
  .works-grid{grid-template-columns:1fr}
  .features-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .stat-num{font-size:30px}
  .stat-unit{font-size:16px}
  .reviews-grid{grid-template-columns:1fr}
  .compare-table{min-width:560px}
  .compare-hint{display:block}
  .compare-wrap{margin:0 -20px;padding:0 20px}
  .update-card{padding:24px 20px}
  .download{padding:56px 0 64px}
  .download-box{padding:44px 20px}
  .download-h{font-size:26px}
  .download-h em{font-size:18px}
  .download-meta{font-size:12px;white-space:nowrap}
  .download-btns{flex-direction:column;gap:14px}
  .to-top{right:16px;bottom:16px;width:40px;height:40px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .btn,.work-card,.feature-card,.stat-card,.review-card,.intro-list li,.to-top{transition:none}
}