:root{
  --primary:#FF9F1C;
  --primary-dark:#E8890B;
  --primary-soft:#FFF3DF;
  --dark:#232A35;
  --dark-2:#2E3642;
  --border:#F0E7D6;
  --bg:#FFFCF6;
  --bg-soft:#FAF4E8;
  --card:#FFFFFF;
  --text:#2B313B;
  --text-2:#5C6570;
  --radius:16px;
  --shadow:0 10px 24px rgba(255,159,28,.16);
  --shadow-soft:0 6px 18px rgba(35,42,53,.08);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:76px}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
button{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

.header{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,252,246,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:inline-flex;align-items:center;height:44px;font-size:22px;font-weight:800;color:var(--dark);letter-spacing:.5px;white-space:nowrap}
.logo span{color:var(--primary)}
.nav{display:flex;gap:2px}
.nav a{display:inline-flex;align-items:center;font-size:14px;color:var(--text-2);padding:6px 11px;border-radius:8px;transition:color .2s,background .2s;white-space:nowrap}
.nav a:hover{color:var(--primary);background:var(--primary-soft)}
.nav-btn{display:inline-flex;align-items:center;min-height:44px;font-size:14px;font-weight:600;color:#fff;background:var(--primary);padding:8px 18px;border-radius:999px;transition:background .2s,transform .2s;white-space:nowrap}
.nav-btn:hover{background:var(--primary-dark);transform:translateY(-1px)}

.hero{padding:132px 0 80px;background:linear-gradient(180deg,var(--primary-soft),var(--bg) 72%)}
.hero-inner{display:flex;align-items:center;justify-content:space-between;gap:56px}
.hero-text{flex:1;max-width:640px}
.hero h1{font-size:42px;font-weight:800;color:var(--dark);line-height:1.25}
.ver{color:var(--primary);font-size:.6em;font-weight:800;margin-left:10px;letter-spacing:1px;vertical-align:middle}
.hero-desc{margin:18px 0 30px;font-size:16px;color:var(--text-2)}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 26px;border-radius:12px;font-size:15px;font-weight:600;text-align:center;transition:transform .2s,box-shadow .2s,background .2s}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);box-shadow:var(--shadow)}
.btn-dark{background:var(--dark);color:#fff}
.btn-dark:hover{background:var(--dark-2);box-shadow:var(--shadow-soft)}
.btn-outline{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.5)}
.btn-outline:hover{background:rgba(255,255,255,.12)}
.btn-lg{padding:14px 34px;font-size:16px;border-radius:14px}
.hero-img{flex:0 0 260px}
.hero-img img{width:100%;height:auto;border-radius:20px;box-shadow:0 20px 40px rgba(35,42,53,.16)}

.section{padding:80px 0}
.section-alt{background:var(--bg-soft)}
.sec-title{font-size:30px;font-weight:800;color:var(--dark);text-align:center;letter-spacing:.5px}
.sec-sub{margin:10px 0 44px;text-align:center;color:var(--text-2);font-size:15px}

.shots-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.shot-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:12px 12px 16px;transition:transform .25s,box-shadow .25s}
.shot-card:hover,.feature-card:hover,.review-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.shot-card img{width:100%;height:auto;border-radius:12px}
.shot-card figcaption{text-align:center;font-weight:600;color:var(--dark);font-size:15px;padding-top:12px}

.about-card{background:var(--card);border:1px solid var(--border);border-radius:20px;padding:40px 44px;max-width:920px;margin:0 auto}
.about-card p{font-size:15px;color:var(--text-2);margin-bottom:16px}
.about-card p:last-of-type{margin-bottom:24px}
.about-tags{display:flex;gap:12px;flex-wrap:wrap}
.about-tags li{background:var(--primary-soft);color:var(--primary-dark);font-size:14px;font-weight:600;padding:6px 16px;border-radius:999px}

.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:28px 26px;transition:transform .25s,box-shadow .25s}
.feature-icon{width:52px;height:52px;border-radius:14px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.feature-icon svg{width:26px;height:26px}
.feature-card h3{font-size:17px;font-weight:700;color:var(--dark);margin-bottom:8px}
.feature-card p{font-size:14px;color:var(--text-2)}

.compare-wrap{overflow-x:auto;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);-webkit-overflow-scrolling:touch}
.compare-table{width:100%;min-width:680px;table-layout:fixed;border-collapse:collapse}
.compare-table th,.compare-table td{padding:15px 20px;font-size:14px;text-align:left;white-space:nowrap;border-bottom:1px solid var(--border)}
.compare-table thead th{background:var(--dark);color:#fff;font-weight:600}
.compare-table thead th.col-hot{background:var(--primary);color:#fff}
.compare-table tbody tr:last-child td{border-bottom:none}
.compare-table .col-hot{background:var(--primary-soft);color:var(--primary-dark);font-weight:600}
.compare-table tbody td.col-hot{border-bottom-color:rgba(255,159,28,.3)}
.compare-table tbody td:first-child{color:var(--text);font-weight:600}
.compare-table tbody tr{transition:background .2s}
.compare-table tbody tr:hover{background:var(--bg)}
.compare-tip{display:none;text-align:center;color:var(--text-2);font-size:13px;margin-top:12px}

.data-section{background:var(--dark)}
.data-title{color:#fff}
.data-sub{color:rgba(255,255,255,.65)}
.data-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;max-width:980px;margin:0 auto}
.data-item{text-align:center;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);padding:30px 20px;transition:transform .25s}
.data-item:hover{transform:translateY(-4px)}
.data-num{font-size:38px;font-weight:800;color:var(--primary);line-height:1.2}
.data-num span{font-size:20px;font-weight:700}
.data-label{margin-top:8px;color:rgba(255,255,255,.75);font-size:14px}

.review-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:24px;transition:transform .25s,box-shadow .25s}
.review-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{width:44px;height:44px;border-radius:50%;background:var(--primary-soft);color:var(--primary-dark);font-size:18px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.review-meta{display:flex;flex-direction:column}
.review-name{font-size:15px;font-weight:700;color:var(--dark)}
.stars{color:#FFB800;font-size:13px;letter-spacing:2px}
.review-text{font-size:14px;color:var(--text-2)}

.version-card{display:flex;gap:48px;background:var(--card);border:1px solid var(--border);border-radius:20px;padding:40px 44px;max-width:920px;margin:0 auto}
.version-info{flex:0 0 220px}
.version-badge{display:inline-block;background:var(--primary);color:#fff;font-size:22px;font-weight:800;padding:10px 22px;border-radius:12px;letter-spacing:1px}
.version-date{margin-top:14px;font-size:14px;color:var(--text-2)}
.version-tag{display:inline-block;margin-top:10px;background:var(--primary-soft);color:var(--primary-dark);font-size:13px;font-weight:600;padding:4px 12px;border-radius:999px}
.version-log{flex:1}
.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:18px;width:8px;height:8px;border-radius:50%;background:var(--primary)}

.faq-container{max-width:860px}
.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-soft)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:17px 22px;background:none;border:none;cursor:pointer;font-size:15px;font-weight:600;color:var(--dark);text-align:left}
.faq-icon{position:relative;flex-shrink:0;width:18px;height:18px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--primary);border-radius:2px;transition:transform .3s}
.faq-icon::before{top:8px;left:0;width:18px;height:2px}
.faq-icon::after{top:0;left:8px;width:2px;height:18px}
.faq-item.open .faq-icon::after{transform:scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 22px 18px;font-size:14px;color:var(--text-2)}

.download-section{background:linear-gradient(180deg,var(--dark),#1B212B)}
.download-inner{text-align:center}
.download-inner h1{font-size:38px;font-weight:800;color:#fff}
.download-meta{margin:14px 0 34px;font-size:14px;color:rgba(255,255,255,.7)}
.download-btns{display:flex;justify-content:center;gap:18px;flex-wrap:wrap}
.download-tip{margin-top:26px;font-size:14px;color:var(--primary);font-weight:500}

.footer{background:#1B212B;padding:30px 0;text-align:center}
.footer p{font-size:13px;color:rgba(255,255,255,.55)}
.footer-copy{margin-bottom:4px}
.footer-copy a{color:rgba(255,255,255,.85)}
.footer-copy a:hover{color:var(--primary)}

.back-top{position:fixed;right:26px;bottom:30px;z-index:99;width:46px;height:46px;border-radius:50%;background:var(--primary);color:#fff;border:none;cursor:pointer;display:none;align-items:center;justify-content:center;box-shadow:var(--shadow);transition:background .2s,transform .2s}
.back-top:hover{background:var(--primary-dark);transform:translateY(-2px)}
.back-top.show{display:flex}
.back-top svg{width:20px;height:20px}

@media (max-width:1024px){
  .shots-grid{grid-template-columns:repeat(2,1fr)}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .review-grid{grid-template-columns:repeat(2,1fr)}
  .data-grid{grid-template-columns:repeat(2,1fr)}
  .hero-img{flex-basis:220px}
}

@media (max-width:992px){
  .nav{display:none}
  .hero{padding:112px 0 64px}
}

@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .sec-title{font-size:24px}
  .sec-sub{margin-bottom:32px;font-size:14px}
  .hero-inner{flex-direction:column;gap:34px}
  .hero-text{max-width:100%}
  .hero h1{font-size:30px}
  .hero-desc{font-size:15px;margin:14px 0 24px}
  .hero-btns{flex-direction:column;width:100%}
  .hero-btns .btn{width:100%}
  .hero-img{flex-basis:auto;width:240px;margin:0 auto}
  .shots-grid{grid-template-columns:1fr;gap:20px}
  .about-card{padding:28px 22px}
  .feature-grid{grid-template-columns:1fr;gap:18px}
  .data-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .data-num{font-size:30px}
  .data-num span{font-size:16px}
  .version-card{flex-direction:column;gap:22px;padding:28px 22px}
  .review-grid{grid-template-columns:1fr;gap:18px}
  .download-inner h1{font-size:28px}
  .download-meta{font-size:12px;margin:12px 0 26px;white-space:nowrap}
  .download-btns{flex-direction:column;width:100%}
  .download-btns .btn{width:100%}
  .back-top{right:16px;bottom:22px;width:42px;height:42px}
  .compare-tip{display:block}
}