:root{
  --primary:#FF6B1A;
  --primary-deep:#E85600;
  --primary-soft:#FFEFE2;
  --dark:#211A13;
  --dark-2:#32261C;
  --bg:#FFFBF6;
  --card:#FFFFFF;
  --text:#2A241E;
  --text-2:#6F645A;
  --border:#F1E7DC;
  --radius:16px;
  --shadow:0 12px 28px rgba(255,107,26,.12);
  --shadow-hover:0 18px 40px rgba(255,107,26,.20);
  --nav-h:72px;
}
*{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","Helvetica Neue",Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container{max-width:1160px;margin:0 auto;padding:0 24px}
section{padding:88px 0}
.sec-head{text-align:center;margin-bottom:48px}
.sec-tag{display:inline-block;font-size:13px;color:var(--primary-deep);background:var(--primary-soft);border:1px solid #FFDCC2;padding:4px 14px;border-radius:999px;font-weight:600}
.sec-title{font-size:34px;font-weight:800;margin:14px 0 10px;color:var(--dark)}
.sec-sub{color:var(--text-2);font-size:16px}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);transition:transform .25s ease,box-shadow .25s ease}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}

.nav{position:fixed;top:0;left:0;right:0;height:var(--nav-h);background:rgba(255,251,246,.92);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--border);z-index:100}
.nav-inner{max-width:1160px;margin:0 auto;padding:0 24px;height:100%;display:flex;align-items:center;gap:26px}
.logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:var(--dark);flex:none}
.logo svg{flex:none}
.nav-links{display:flex;gap:2px;margin-left:auto}
.nav-links a{font-size:14.5px;color:var(--text-2);padding:8px 11px;border-radius:10px;font-weight:500;transition:color .2s,background .2s}
.nav-links a:hover{color:var(--primary);background:var(--primary-soft)}
.nav-btn{font-size:13.5px;font-weight:700;color:#fff;background:linear-gradient(135deg,var(--primary),var(--primary-deep));padding:5px 18px;border-radius:999px;flex:none;transition:transform .2s,box-shadow .2s}
.nav-btn:hover{transform:translateY(-2px);box-shadow:0 10px 22px rgba(255,107,26,.30)}

.hero{padding:calc(var(--nav-h) + 56px) 0 80px;background:linear-gradient(180deg,#FFF3E9 0%,var(--bg) 100%)}
.hero-inner{max-width:1160px;margin:0 auto;padding:0 24px;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{font-size:46px;font-weight:900;color:var(--dark);line-height:1.25;margin-top:14px}
.hero .ver{color:var(--primary);font-size:22px;font-weight:800;margin-left:10px}
.hero-desc{margin:20px 0 26px;font-size:17px;color:var(--text-2);max-width:520px}
.hero-chips{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:28px}
.chip{font-size:13px;font-weight:600;color:var(--primary-deep);background:#fff;border:1px solid #FFDCC2;padding:6px 14px;border-radius:999px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:16px;font-weight:700;color:#fff;background:linear-gradient(135deg,var(--primary),var(--primary-deep));border-radius:999px;padding:14px 32px;box-shadow:0 10px 24px rgba(255,107,26,.25);transition:transform .2s,box-shadow .2s}
.btn:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(255,107,26,.34)}
.btn-ghost{background:#fff;color:var(--primary-deep);box-shadow:none;border:1.5px solid var(--primary)}
.btn-ghost:hover{background:var(--primary-soft);box-shadow:0 12px 24px rgba(255,107,26,.14)}
.hero-img{width:100%;max-width:340px;margin:0 auto;border-radius:24px;border:6px solid #fff;box-shadow:0 24px 60px rgba(120,60,10,.28)}

.works-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.work-card{overflow:hidden}
.work-card img{width:100%;height:auto;border-radius:var(--radius) var(--radius) 0 0}
.work-cap{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;font-size:14px;font-weight:700;color:var(--dark)}
.work-cap span{font-size:12.5px;font-weight:400;color:var(--text-2)}

#product{background:var(--card)}
.product-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.product-text p{font-size:16px;color:var(--text-2);margin-bottom:16px}
.product-points{list-style:none;margin-top:22px;display:grid;gap:14px}
.product-points li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;font-weight:600;color:var(--dark)}
.product-points svg{width:20px;height:20px;flex:none;margin-top:3px;color:var(--primary)}
.product-panel{background:linear-gradient(150deg,var(--primary),#FF8A3D);border-radius:24px;padding:40px 34px;color:#fff;box-shadow:var(--shadow)}
.product-panel h3{font-size:22px;font-weight:800;margin-bottom:18px}
.product-panel ul{list-style:none}
.product-panel li{display:flex;align-items:center;gap:10px;padding:13px 0;border-bottom:1px dashed rgba(255,255,255,.35);font-size:15px;font-weight:600}
.product-panel li:last-child{border-bottom:none}
.product-panel li::before{content:"";width:6px;height:6px;border-radius:50%;background:#fff;flex:none}

.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feat-card{padding:30px 26px}
.feat-icon{width:52px;height:52px;border-radius:14px;background:var(--primary-soft);display:flex;align-items:center;justify-content:center;margin-bottom:18px;color:var(--primary-deep)}
.feat-icon svg{width:26px;height:26px}
.feat-card h3{font-size:18px;font-weight:700;color:var(--dark);margin-bottom:10px}
.feat-card p{font-size:14.5px;color:var(--text-2)}

.compare-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--border);border-radius:var(--radius);background:var(--card)}
.compare-table{width:100%;min-width:640px;border-collapse:collapse;table-layout:fixed}
.compare-table th,.compare-table td{padding:15px 18px;text-align:left;border-bottom:1px solid var(--border);font-size:14.5px;white-space:nowrap}
.compare-table thead th{background:var(--dark);color:#fff;font-weight:700;font-size:15px}
.compare-table thead th:nth-child(2){background:var(--primary)}
.compare-table tbody th{color:var(--primary-deep);font-weight:700;font-size:14.5px}
.compare-table tbody td:nth-child(2){background:#FFF7F0;font-weight:600;color:var(--dark)}
.compare-table tbody tr:last-child td,.compare-table tbody tr:last-child th{border-bottom:none}
.compare-table tbody tr:hover{background:var(--primary-soft)}
.compare-hint{display:none;text-align:center;font-size:12.5px;color:var(--text-2);margin-top:12px}

.data{background:linear-gradient(150deg,var(--dark) 0%,var(--dark-2) 100%)}
.data .sec-title{color:#fff}
.data .sec-sub{color:#C9BFB4}
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.data-item{border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);padding:34px 20px;text-align:center;background:rgba(255,255,255,.04);transition:transform .25s ease,box-shadow .25s ease}
.data-item:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(0,0,0,.35)}
.data-num{font-size:42px;font-weight:900;color:var(--primary);line-height:1.1}
.data-num span{font-size:22px;font-weight:800;margin-left:2px}
.data-label{font-size:14px;color:#C9BFB4;margin-top:8px}

.reviews-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.review-card{padding:26px}
.review-top{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.review-avatar{width:46px;height:46px;border-radius:50%;background:linear-gradient(135deg,var(--primary),#FFB36B);color:#fff;font-size:19px;font-weight:700;display:flex;align-items:center;justify-content:center;flex:none}
.review-user{flex:1;min-width:0}
.review-name{font-size:15.5px;font-weight:700;color:var(--dark)}
.review-stars{color:#FFB400;font-size:13px;letter-spacing:2px}
.review-text{font-size:14.5px;color:var(--text-2);line-height:1.75}

.update-card{max-width:760px;margin:0 auto;background:var(--card);border:1px solid var(--border);border-radius:24px;padding:40px 44px;box-shadow:var(--shadow)}
.update-head{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:24px}
.update-badge{background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:#fff;font-weight:800;font-size:20px;padding:8px 20px;border-radius:12px}
.update-date{color:var(--text-2);font-size:14.5px}
.update-list{list-style:none;display:grid;gap:13px}
.update-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text)}
.update-list li::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--primary);flex:none;margin-top:9px}
.update-list strong{color:var(--primary-deep);font-weight:700}

.faq{max-width:760px;margin:0 auto}
.faq-item{border:1px solid var(--border);border-radius:var(--radius);background:var(--card);margin-bottom:14px;overflow:hidden;transition:box-shadow .2s}
.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:none;padding:18px 22px;font-family:inherit;font-size:16px;font-weight:700;color:var(--dark);cursor:pointer;text-align:left}
.faq-arrow{width:34px;height:34px;flex:none;border-radius:50%;background:var(--primary-soft);color:var(--primary-deep);font-size:18px;font-weight:700;display:flex;align-items:center;justify-content:center;transition:transform .25s}
.faq-item.open .faq-arrow{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 22px 20px;font-size:14.5px;color:var(--text-2)}

.download-panel{max-width:860px;margin:0 auto;background:linear-gradient(150deg,var(--primary) 0%,#FF8A3D 55%,var(--primary-deep) 100%);border-radius:32px;padding:64px 40px;text-align:center;color:#fff;box-shadow:0 24px 60px rgba(255,107,26,.30)}
.download-panel h1{font-size:38px;font-weight:900;color:#fff}
.download-panel .ver{font-size:20px;font-weight:700;margin-left:8px;opacity:.95}
.download-meta{margin:14px 0 34px;font-size:14px;opacity:.92}
.download-btns{display:flex;gap:16px;justify-content:center}
.btn-light{background:#fff;color:var(--primary-deep);box-shadow:0 10px 24px rgba(0,0,0,.18)}
.btn-light:hover{box-shadow:0 16px 32px rgba(0,0,0,.26)}
.download-tip{margin-top:28px;display:inline-flex;align-items:center;gap:8px;font-size:14px;background:rgba(255,255,255,.16);padding:10px 18px;border-radius:999px}

footer{background:var(--dark);color:#B9AFA4;padding:36px 0;text-align:center;font-size:14px}
footer a{color:#fff;font-weight:600;transition:color .2s}
footer a:hover{color:var(--primary)}

.back-top{position:fixed;right:26px;bottom:30px;width:46px;height:46px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:#fff;border:none;cursor:pointer;box-shadow:0 10px 24px rgba(255,107,26,.35);opacity:0;visibility:hidden;transform:translateY(12px);transition:all .3s;z-index:90;display:flex;align-items:center;justify-content:center}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{transform:translateY(-3px)}

@media (max-width:1024px){
  .nav-links{display:none}
  .works-grid{grid-template-columns:repeat(2,1fr)}
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .reviews-grid{grid-template-columns:repeat(2,1fr)}
  .data-grid{grid-template-columns:repeat(2,1fr)}
  .nav-btn{margin-left:auto}
  .hero h1{font-size:40px}
}
@media (max-width:860px){
  .hero-inner{grid-template-columns:1fr;gap:40px;text-align:center}
  .hero-desc{margin-left:auto;margin-right:auto}
  .hero-btns{justify-content:center}
  .product-inner{grid-template-columns:1fr;gap:36px}
}
@media (max-width:768px){
  section{padding:64px 0}
  .container,.hero-inner,.nav-inner{padding-left:20px;padding-right:20px}
  .sec-head{margin-bottom:36px}
  .sec-title{font-size:26px}
  .hero{padding:calc(var(--nav-h) + 40px) 0 60px}
  .hero h1{font-size:32px}
  .hero-btns{flex-direction:column;width:100%}
  .hero-btns .btn{width:100%;padding:13px 20px}
  .hero-img{max-width:280px}
  .works-grid,.features-grid,.reviews-grid{grid-template-columns:1fr}
  .compare-hint{display:block}
  .update-card{padding:28px 22px}
  .download-panel{padding:44px 20px;border-radius:24px}
  .download-panel h1{font-size:28px}
  .download-btns{flex-direction:column;width:100%}
  .download-btns .btn{width:100%}
  .download-meta{font-size:12.5px;white-space:nowrap}
  .logo{min-height:44px}
  .nav-btn{min-height:32px;padding:4px 18px;display:flex;align-items:center}
  .back-top{right:16px;bottom:20px}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .card,.data-item,.btn,.nav-btn,.nav-links a,.back-top,.faq-arrow,.faq-a{transition:none}
}