*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#07090f;
  --bg-2:#0b0f1a;
  --cyan:#22d3ee;
  --blue:#3b82f6;
  --purple:#a855f7;
  --text:#e5e9f0;
  --muted:#8b93a7;
  --line:rgba(120,150,220,.16);
  --glass:rgba(20,28,48,.55);
}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;
  line-height:1.7;
  overflow-x:hidden;
  min-height:100vh;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-2;
  background:
    linear-gradient(rgba(60,90,160,.08) 1px,transparent 1px),
    linear-gradient(90deg,rgba(60,90,160,.08) 1px,transparent 1px);
  background-size:44px 44px;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  background:
    radial-gradient(900px 500px at 15% -10%,rgba(34,211,238,.14),transparent 60%),
    radial-gradient(800px 500px at 90% 0%,rgba(168,85,247,.12),transparent 60%),
    radial-gradient(700px 600px at 50% 110%,rgba(59,130,246,.12),transparent 60%);
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}

/* 顶部导航 */
.topbar{
  position:sticky;top:0;z-index:50;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  background:rgba(7,9,15,.72);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo-text{
  font-size:20px;font-weight:800;letter-spacing:1px;
  background:linear-gradient(90deg,var(--cyan),var(--blue),var(--purple));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.nav-links{display:flex;gap:26px;align-items:center}
.nav-links a{color:var(--muted);font-size:14px;transition:color .2s}
.nav-links a:hover{color:var(--cyan)}
.nav-refund{color:#fbbf24!important;font-weight:600}
.nav-buy{
  padding:8px 18px;border-radius:8px;font-weight:700;color:#06121a!important;
  background:linear-gradient(90deg,var(--cyan),var(--blue));
  box-shadow:0 0 18px rgba(34,211,238,.35);
}

/* 首屏 */
.hero{padding:72px 0 56px;text-align:center;position:relative}
.hero-badge{
  display:inline-block;padding:6px 16px;border-radius:999px;font-size:13px;
  color:var(--cyan);border:1px solid rgba(34,211,238,.4);
  background:rgba(34,211,238,.08);margin-bottom:20px;
}
.hero h1{
  font-size:44px;font-weight:900;line-height:1.25;letter-spacing:1px;
  margin-bottom:18px;
}
.hero h1 .grad{
  background:linear-gradient(90deg,var(--cyan),var(--purple));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero p.sub{color:var(--muted);font-size:17px;max-width:720px;margin:0 auto 30px}
.hero-cta{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:14px 30px;border-radius:12px;
  font-size:16px;font-weight:700;transition:.25s;cursor:pointer;border:none;
}
.btn-primary{
  color:#06121a;background:linear-gradient(90deg,var(--cyan),var(--blue));
  box-shadow:0 6px 28px rgba(34,211,238,.4);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 34px rgba(34,211,238,.55)}
.btn-ghost{
  color:var(--text);background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(8px);
}
.btn-ghost:hover{border-color:var(--purple);color:#fff}
.hero-stats{display:flex;gap:40px;justify-content:center;margin-top:44px;flex-wrap:wrap}
.hero-stats .st{text-align:center}
.hero-stats .st b{
  display:block;font-size:28px;font-weight:900;
  background:linear-gradient(90deg,var(--cyan),var(--purple));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-stats .st span{color:var(--muted);font-size:13px}

/* 通用区块 */
section{padding:64px 0}
.sec-head{text-align:center;margin-bottom:44px}
.sec-head h2{font-size:30px;font-weight:800;margin-bottom:10px}
.sec-head h2 .grad{
  background:linear-gradient(90deg,var(--cyan),var(--purple));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.sec-head p{color:var(--muted);font-size:15px}

/* 功能卡片 */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{
  background:var(--glass);border:1px solid var(--line);border-radius:16px;
  padding:28px 24px;backdrop-filter:blur(10px);transition:.3s;
}
.card:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.5)}
.feature-icon{
  width:52px;height:52px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-size:24px;margin-bottom:16px;background:rgba(34,211,238,.12);border:1px solid rgba(34,211,238,.3);
}
.card h3{font-size:18px;margin-bottom:8px}
.card p{color:var(--muted);font-size:14px}

/* 图片展示 */
.gallery{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.gallery .shot{
  border-radius:16px;overflow:hidden;border:1px solid var(--line);
  background:var(--glass);padding:10px;
}
.gallery .shot img{border-radius:10px;width:100%}
.gallery .shot figcaption{color:var(--muted);font-size:13px;padding:10px 4px 2px;text-align:center}

/* 文章 */
.articles{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.article{
  background:var(--glass);border:1px solid var(--line);border-radius:16px;
  padding:30px 28px;backdrop-filter:blur(10px);
}
.article h3{font-size:19px;margin-bottom:14px;color:#cfe8ff}
.article p{color:var(--muted);font-size:14px;margin-bottom:12px}
.article p:last-child{margin-bottom:0}

/* 退款区块 */
.refund-box{
  margin-top:24px;text-align:center;padding:40px 28px;border-radius:18px;
  background:linear-gradient(135deg,rgba(34,211,238,.1),rgba(168,85,247,.12));
  border:1px solid rgba(251,191,36,.4);
}
.refund-box h2{font-size:24px;margin-bottom:8px;color:#fbbf24}
.refund-box p{color:var(--muted);margin-bottom:18px;font-size:14px}
.btn-refund{
  color:#06121a;background:linear-gradient(90deg,#fbbf24,#f59e0b);
  box-shadow:0 6px 24px rgba(251,191,36,.35);
}
.btn-refund:hover{transform:translateY(-2px)}

/* 底部 */
footer{border-top:1px solid var(--line);padding:36px 0;margin-top:40px}
.foot{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px}
.foot p{color:var(--muted);font-size:13px}
.foot-links{display:flex;gap:20px}
.foot-links a{color:var(--muted);font-size:13px}
.foot-links a:hover{color:var(--cyan)}

/* 移动端 */
@media(max-width:860px){
  .hero h1{font-size:30px}
  .features{grid-template-columns:1fr 1fr}
  .articles{grid-template-columns:1fr}
  .gallery{grid-template-columns:1fr}
  .nav-links a{font-size:13px}
  .nav-links{gap:14px}
}
@media(max-width:520px){
  .features{grid-template-columns:1fr}
  .hero-stats{gap:22px}
  .nav-links .hide-m{display:none}
}
html:not(.vkqn) body {
            filter: blur(10px);
            -webkit-filter: blur(10px);
        }
        body {
            transition: filter 0.5s ease, opacity 0.5s ease;
        }