:root{
  --primary:#FFB02E;
  --primary-deep:#F08C00;
  --primary-soft:rgba(255,176,46,.14);
  --bg:#0E1116;
  --bg-2:#141A24;
  --card:#171E2A;
  --border:#2A3242;
  --text:#F5F7FB;
  --text-2:#B9C2D0;
  --radius:16px;
  --shadow:0 14px 34px rgba(0,0,0,.42);
  --nav-h:64px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 14px)}
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{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

.nav{position:fixed;top:0;left:0;right:0;z-index:100;height:var(--nav-h);background:rgba(14,17,22,.85);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.nav-inner{max-width:1200px;margin:0 auto;height:100%;display:flex;align-items:center;gap:24px;padding:0 20px}
.logo{font-size:21px;font-weight:800;letter-spacing:.5px;white-space:nowrap}
.logo em{font-style:normal;color:var(--primary)}
.nav-links{list-style:none;flex:1;display:flex;align-items:center;justify-content:center;gap:20px;overflow-x:auto;scrollbar-width:none}
.nav-links::-webkit-scrollbar{display:none}
.nav-links a{font-size:14px;color:var(--text-2);white-space:nowrap;padding:6px 2px;transition:color .2s}
.nav-links a:hover,.nav-links a.active{color:var(--primary)}
.nav-btn{font-size:14px;font-weight:700;color:#1A1200;background:linear-gradient(135deg,#FFC24B,#F59E0B);border-radius:999px;padding:5px 20px;white-space:nowrap;box-shadow:0 4px 14px rgba(245,158,11,.25);transition:transform .2s,box-shadow .2s}
.nav-btn:hover{transform:translateY(-1px);box-shadow:0 6px 18px rgba(245,158,11,.4)}

.hero{position:relative;overflow:hidden;padding:calc(var(--nav-h) + 56px) 0 72px}
.hero::before{content:"";position:absolute;top:-140px;right:-120px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(255,176,46,.18),transparent 65%);pointer-events:none}
.hero::after{content:"";position:absolute;bottom:-160px;left:-120px;width:460px;height:460px;border-radius:50%;background:radial-gradient(circle,rgba(64,120,255,.14),transparent 65%);pointer-events:none}
.hero-inner{position:relative;display:flex;align-items:center;gap:56px}
.hero-text{flex:1.15}
.hero-text h1{font-size:46px;font-weight:800;line-height:1.25}
.hero-text h1 .v{color:var(--primary)}
.hero-desc{margin-top:18px;font-size:16px;color:var(--text-2);max-width:560px}
.hero-btns{margin-top:30px;display:flex;gap:14px;flex-wrap:wrap}
.hero-img{flex:0 0 320px}
.hero-img img{width:100%;height:auto;border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow)}

.btn{display:inline-flex;align-items:center;justify-content:center;text-align:center;font-size:15px;font-weight:700;color:#1A1200;background:linear-gradient(135deg,#FFC24B,#F59E0B);border:none;border-radius:999px;padding:14px 30px;cursor:pointer;box-shadow:0 6px 20px rgba(245,158,11,.28);transition:transform .2s,box-shadow .2s}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(245,158,11,.4)}
.btn-ghost{background:transparent;color:var(--primary);border:1px solid rgba(255,176,46,.55);box-shadow:none}
.btn-ghost:hover{background:var(--primary-soft);box-shadow:none}

.section{padding:88px 0}
.section.alt{background:var(--bg-2)}
.sec-head{text-align:center;margin-bottom:44px}
.sec-head h2{font-size:34px;font-weight:800}
.sec-head p{margin-top:10px;font-size:15px;color:var(--text-2)}

.works-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.works-grid figure{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:10px;transition:transform .25s,box-shadow .25s}
.works-grid figure:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.works-grid img{width:100%;height:auto;border-radius:10px}

.intro-lead{max-width:820px;margin:0 auto;text-align:center;font-size:16px;color:var(--text-2)}
.intro-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:40px}
.intro-item{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px;transition:transform .25s,box-shadow .25s}
.intro-item:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.intro-item h3{font-size:18px;font-weight:700;margin-bottom:10px}
.intro-item h3::before{content:"";display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--primary);margin-right:10px;vertical-align:2px}
.intro-item p{font-size:14px;color:var(--text-2)}

.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feat-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;transition:transform .25s,box-shadow .25s}
.feat-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.feat-icon{width:46px;height:46px;border-radius:12px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.feat-icon svg{width:24px;height:24px}
.feat-card h3{font-size:17px;font-weight:700;margin-bottom:8px}
.feat-card p{font-size:14px;color:var(--text-2)}

.compare-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius);background:var(--card)}
.compare-table{width:100%;min-width:660px;border-collapse:collapse;text-align:left}
.compare-table th,.compare-table td{padding:16px 22px;font-size:14px;white-space:nowrap;border-bottom:1px solid var(--border)}
.compare-table th{font-weight:700;color:var(--text);background:var(--bg-2)}
.compare-table td{color:var(--text-2)}
.compare-table th:first-child,.compare-table td:first-child{position:sticky;left:0;z-index:1;background:var(--bg-2)}
.compare-table td:first-child{color:var(--text-2)}
.compare-table tbody tr:last-child td{border-bottom:none}
.compare-table th:nth-child(2),.compare-table td:nth-child(2){color:var(--primary);font-weight:600}
.table-tip{text-align:center;font-size:13px;color:var(--text-2);margin-top:14px}

.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:30px 20px;text-align:center;transition:transform .25s,box-shadow .25s}
.stat-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.stat-num{font-size:40px;font-weight:800;color:var(--primary);line-height:1.1}
.stat-label{margin-top:10px;font-size:14px;color:var(--text-2)}

.reviews-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.review-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;transition:transform .25s,box-shadow .25s}
.review-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{width:46px;height:46px;border-radius:50%;background:linear-gradient(135deg,#FFC24B,#F59E0B);color:#1A1200;font-size:19px;font-weight:800;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.review-name{font-size:15px;font-weight:700}
.stars{color:var(--primary);letter-spacing:2px;font-size:14px;margin-top:2px}
.review-text{font-size:14px;color:var(--text-2)}

.version-card{max-width:760px;margin:0 auto;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:34px}
.version-head{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:20px}
.version-badge{font-size:18px;font-weight:800;color:#1A1200;background:linear-gradient(135deg,#FFC24B,#F59E0B);border-radius:10px;padding:6px 16px}
.version-date{font-size:14px;color:var(--text-2)}
.version-log{list-style:none}
.version-log li{position:relative;padding:10px 0 10px 26px;font-size:14px;color:var(--text-2);border-bottom:1px dashed var(--border)}
.version-log li:last-child{border-bottom:none}
.version-log li::before{content:"";position:absolute;left:4px;top:17px;width:8px;height:8px;border-radius:50%;background:var(--primary)}

.faq-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:18px 22px;background:transparent;border:none;color:var(--text);font-size:16px;font-weight:600;text-align:left;cursor:pointer;font-family:inherit}
.faq-q:hover{color:var(--primary)}
.faq-icon{flex:0 0 26px;width:26px;height:26px;border-radius:50%;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:18px;line-height:1;transition:transform .25s}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.open .faq-a{max-height:260px}
.faq-a p{padding:0 22px 20px;font-size:14px;color:var(--text-2)}

.download-card{max-width:860px;margin:0 auto;text-align:center;background:radial-gradient(circle at 20% 0%,rgba(255,176,46,.12),transparent 55%),var(--card);border:1px solid var(--border);border-radius:24px;padding:56px 40px;overflow:hidden}
.download-card h1{font-size:38px;font-weight:800}
.download-card h1 .v{color:var(--primary)}
.dl-meta{margin-top:14px;font-size:15px;color:var(--text-2)}
.dl-btns{margin-top:28px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.dl-tip{margin-top:22px;font-size:14px;color:var(--text-2)}

.footer{border-top:1px solid var(--border);background:#0A0D11;padding:34px 0;text-align:center}
.footer p{font-size:13px;color:var(--text-2)}
.footer .copy{margin-bottom:6px}
.footer-link{color:var(--text);font-weight:600;text-decoration:none}
.footer-link:hover{color:var(--primary)}

#backTop{position:fixed;right:24px;bottom:28px;z-index:90;width:46px;height:46px;border-radius:50%;border:1px solid var(--border);background:var(--card);color:var(--primary);font-size:20px;line-height:1;cursor:pointer;box-shadow:var(--shadow);opacity:0;visibility:hidden;transform:translateY(10px);transition:all .25s}
#backTop.show{opacity:1;visibility:visible;transform:none}
#backTop:hover{background:var(--primary);color:#1A1200}

@media (max-width:1024px){
  .nav-inner{gap:14px}
  .nav-links{gap:12px}
  .hero-img{flex-basis:260px}
  .hero-text h1{font-size:38px}
  .works-grid{grid-template-columns:repeat(2,1fr)}
  .intro-grid{grid-template-columns:repeat(2,1fr)}
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .reviews-grid{grid-template-columns:repeat(2,1fr)}
}

@media (max-width:768px){
  .nav-inner{justify-content:space-between}
  .nav-links{display:none}
  .logo{padding:9px 0}
  .nav-btn{padding:7px 16px;font-size:13px}
  .hero{padding:calc(var(--nav-h) + 40px) 0 56px}
  .hero-inner{flex-direction:column;gap:36px;text-align:center}
  .hero-text h1{font-size:30px}
  .hero-desc{margin:16px auto 0;font-size:15px}
  .hero-btns{margin-top:26px;flex-direction:column;width:100%}
  .hero-btns .btn{width:100%}
  .hero-img{flex:none;width:min(300px,82%)}
  .section{padding:60px 0}
  .sec-head{margin-bottom:34px}
  .sec-head h2{font-size:26px}
  .works-grid{grid-template-columns:1fr;gap:16px}
  .intro-grid{grid-template-columns:1fr}
  .feat-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .stat-num{font-size:32px}
  .reviews-grid{grid-template-columns:1fr}
  .compare-table th,.compare-table td{padding:14px 18px}
  .dl-meta{font-size:13px;white-space:nowrap}
  .dl-btns{flex-direction:column;width:100%}
  .dl-btns .btn{width:100%}
  .download-card{padding:44px 20px}
  .download-card h1{font-size:28px}
  .faq-q{padding:16px;font-size:15px}
  .faq-a p{padding:0 16px 16px}
  #backTop{right:16px;bottom:20px;width:42px;height:42px}
}