:root{
  --primary:#0e9f6e;
  --primary-deep:#0a7c56;
  --primary-soft:#e7f6ef;
  --dark:#15231c;
  --text:#37453e;
  --text-2:#68756e;
  --border:#e3ece7;
  --bg:#fff;
  --bg-soft:#f4faf7;
  --star:#f6a821;
  --grad:linear-gradient(135deg,#0e9f6e,#0a7c56);
  --radius:16px;
  --shadow:0 12px 30px rgba(14,159,110,.12);
  --nav-h:64px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 12px)}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--text);background:var(--bg);line-height:1.7;font-size:15px;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%}
::selection{background:var(--primary-soft);color:var(--primary-deep)}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

.btn,.nav-btn{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;background:var(--grad);color:#fff;font-weight:600;white-space:nowrap;transition:transform .25s ease,box-shadow .25s ease}
.btn{padding:12px 26px;font-size:15px;border:none;cursor:pointer;text-align:center}
.btn:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(14,159,110,.32)}
.btn-ghost{background:#fff;color:var(--primary-deep);border:1px solid var(--primary)}
.btn-ghost:hover{border-color:var(--primary-deep);box-shadow:0 12px 26px rgba(14,159,110,.18)}
.btn-white{background:#fff;color:var(--primary-deep);font-weight:700;box-shadow:0 10px 24px rgba(0,0,0,.12)}
.btn-white:hover{box-shadow:0 14px 30px rgba(0,0,0,.22)}
.nav-btn{padding:9px 18px;font-size:14px}
.nav-btn:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(14,159,110,.3)}

.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,.94);border-bottom:1px solid transparent;transition:box-shadow .3s ease,border-color .3s ease}
.nav.scrolled{border-bottom-color:var(--border);box-shadow:0 6px 24px rgba(21,35,28,.08)}
.nav-inner{height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:flex;align-items:center;gap:8px;font-size:22px;font-weight:800;color:var(--dark);white-space:nowrap}
.logo svg{flex:none}
.nav-links{display:flex;align-items:center;gap:20px}
.nav-links a{font-size:15px;color:var(--text);white-space:nowrap;transition:color .2s ease}
.nav-links a:hover{color:var(--primary)}

.hero{padding:calc(var(--nav-h) + 70px) 0 70px;background:linear-gradient(180deg,var(--primary-soft) 0%,#fff 78%)}
.hero-inner{display:flex;align-items:center;gap:56px}
.hero-text{flex:1;min-width:0}
.hero h1{font-size:clamp(30px,4.6vw,46px);font-weight:800;color:var(--dark);line-height:1.22;letter-spacing:.5px}
.ver-pill{display:inline-block;vertical-align:middle;margin-left:10px;padding:5px 14px;border-radius:999px;background:var(--grad);color:#fff;font-size:16px;font-weight:700}
.hero p{margin:20px 0 30px;max-width:540px;font-size:16px;color:var(--text-2);line-height:1.9}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-img{flex:1;max-width:430px;min-width:0}
.hero-img img{width:100%;height:auto;border:1px solid var(--border);border-radius:20px;box-shadow:var(--shadow)}

.section{padding:76px 0}
.section.alt{background:var(--bg-soft)}
.sec-head{text-align:center;margin-bottom:42px}
.sec-head h2{font-size:clamp(24px,3.2vw,32px);font-weight:800;color:var(--dark);letter-spacing:1px}
.sec-head p{margin:10px auto 0;max-width:620px;font-size:15px;color:var(--text-2)}
.bar{display:block;width:48px;height:4px;border-radius:2px;background:var(--grad);margin:16px auto 0}

.works-grid,.intro-grid,.feat-grid,.rev-grid,.data-grid{display:grid;gap:20px}
.works-grid{grid-template-columns:repeat(4,1fr)}
.intro-grid,.feat-grid,.rev-grid{grid-template-columns:repeat(3,1fr)}
.data-grid{grid-template-columns:repeat(4,1fr)}

.work-card,.intro-card,.feat-card,.data-card,.rev-card,.version-card,.faq-item{background:#fff;border:1px solid var(--border)}
.work-card,.intro-card,.feat-card,.data-card,.rev-card{border-radius:var(--radius);transition:transform .3s ease,box-shadow .3s ease}
.work-card:hover,.intro-card:hover,.feat-card:hover,.data-card:hover,.rev-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.work-card{overflow:hidden}
.work-card img{width:100%;height:auto}

.intro-card{padding:28px}
.feat-card{padding:26px}
.data-card{padding:32px 18px;text-align:center}
.rev-card{padding:24px}

.ic,.rev-avatar{display:flex;align-items:center;justify-content:center}
.ic{width:46px;height:46px;border-radius:12px;background:var(--primary-soft);color:var(--primary-deep)}
.ic svg{width:24px;height:24px}
.intro-card h3,.feat-card h3{color:var(--dark);font-size:17px;margin:16px 0 8px}
.intro-card h3{font-size:18px;margin-top:18px}
.intro-card p,.feat-card p,.rev-text{font-size:14px;color:var(--text-2);line-height:1.8}

.compare-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--border);border-radius:var(--radius);background:#fff}
.compare-table{width:100%;min-width:600px;border-collapse:collapse;table-layout:fixed}
.compare-table th,.compare-table td{padding:15px 18px;text-align:left;border-bottom:1px solid var(--border);white-space:nowrap;font-size:14.5px}
.compare-table th{background:var(--primary-soft);color:var(--dark);font-weight:700}
.compare-table th.cq{color:var(--primary-deep)}
.compare-table td.dim{color:var(--text-2);font-weight:600}
.compare-table td.cq{color:var(--primary-deep);font-weight:600}
.compare-table tr:last-child td{border-bottom:none}
.compare-hint{display:none;text-align:center;font-size:12.5px;color:var(--text-2);margin-top:10px}

.data-num{font-size:clamp(28px,3.4vw,38px);font-weight:800;color:var(--primary-deep);line-height:1.2}
.data-num span{font-size:.55em;font-weight:700;margin-left:2px}
.data-label{margin-top:8px;font-size:14px;color:var(--text-2)}

.rev-top{display:flex;align-items:center;gap:12px}
.rev-avatar{width:44px;height:44px;border-radius:50%;background:var(--grad);color:#fff;font-size:18px;font-weight:700}
.rev-name{font-size:15px;font-weight:700;color:var(--dark);line-height:1.4}
.stars{font-size:13px;color:var(--star);letter-spacing:2px;line-height:1.4}
.rev-text{margin-top:14px}

.version-card{max-width:720px;margin:0 auto;padding:32px 36px;border-radius:var(--radius)}
.version-head{display:flex;align-items:center;flex-wrap:wrap;gap:12px}
.version-head h3{font-size:21px;font-weight:800;color:var(--dark)}
.version-head .ver-pill{margin-left:0;font-size:14px;padding:4px 12px}
.version-date{font-size:14px;color:var(--text-2)}
.changelog{list-style:none;margin-top:20px}
.changelog li{position:relative;padding:10px 0 10px 26px;font-size:14.5px;color:var(--text);border-bottom:1px dashed var(--border)}
.changelog li::before{content:"";position:absolute;left:3px;top:17px;width:7px;height:7px;border-radius:50%;background:var(--primary)}
.changelog li:last-child{border-bottom:none}

.faq{max-width:720px;margin:0 auto}
.faq-item{border-radius:14px;margin-bottom:14px;overflow:hidden;transition:box-shadow .3s ease}
.faq-item.open{box-shadow:var(--shadow)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:17px 20px;background:none;border:none;cursor:pointer;font-size:15.5px;font-weight:600;color:var(--dark);text-align:left;font-family:inherit}
.faq-x{flex:none;position:relative;width:20px;height:20px}
.faq-x::before,.faq-x::after{content:"";position:absolute;left:50%;top:50%;width:14px;height:2px;border-radius:1px;background:var(--primary-deep);transform:translate(-50%,-50%);transition:transform .3s ease}
.faq-x::after{transform:translate(-50%,-50%) rotate(90deg)}
.faq-item.open .faq-x::after{transform:translate(-50%,-50%) rotate(0deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;color:var(--text-2);font-size:14.5px;line-height:1.85}
.faq-item.open .faq-a{max-height:220px;padding:0 20px 18px}

.download{padding:84px 0;background:linear-gradient(160deg,#0a7c56,#0e9f6e);text-align:center;color:#fff}
.download h1{font-size:clamp(26px,4vw,38px);font-weight:800;color:#fff;line-height:1.3}
.download .ver-pill{background:rgba(255,255,255,.18);font-size:15px}
.dl-meta{margin:16px 0 30px;font-size:14px;color:rgba(255,255,255,.88);letter-spacing:.4px}
.dl-btns{display:flex;justify-content:center;flex-wrap:wrap;gap:16px}
.dl-btns .btn{padding:15px 40px;font-size:16px}
.dl-tip{margin-top:28px;font-size:14px;color:rgba(255,255,255,.92)}

footer{background:var(--dark);color:rgba(255,255,255,.72);text-align:center;padding:28px 20px;font-size:13.5px}
footer a{color:#fff;font-weight:600}
footer a:hover{color:var(--primary-soft)}

#toTop{position:fixed;right:24px;bottom:26px;z-index:99;width:46px;height:46px;border:none;border-radius:13px;background:var(--grad);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 10px 24px rgba(14,159,110,.35);opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity .3s ease,transform .3s ease,visibility .3s}
#toTop.show{opacity:1;visibility:visible;transform:none}
#toTop svg{width:22px;height:22px}

@media (max-width:1024px){
  .works-grid{grid-template-columns:repeat(2,1fr)}
  .feat-grid,.rev-grid,.data-grid{grid-template-columns:repeat(2,1fr)}
  .nav-links{gap:14px}
  .nav-links a{font-size:14px}
  .hero-inner{gap:36px}
}

@media (max-width:768px){
  .container{padding:0 20px}
  .nav-inner{gap:12px}
  .nav-links{display:none}
  .logo{font-size:19px}
  .nav-btn{padding:0 16px;font-size:13px;min-height:44px}
  .hero{padding:calc(var(--nav-h) + 40px) 0 56px}
  .hero-inner{flex-direction:column;gap:32px;text-align:center}
  .hero p{margin:16px auto 26px;font-size:15px}
  .hero-actions{flex-direction:column;width:100%}
  .hero-actions .btn,.dl-btns .btn{width:100%}
  .hero-img{max-width:340px;width:100%}
  .section{padding:60px 0}
  .works-grid,.intro-grid,.feat-grid,.rev-grid{grid-template-columns:1fr}
  .data-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .compare-hint{display:block}
  .version-card{padding:26px 22px}
  .dl-meta{font-size:12.5px;white-space:nowrap}
  .dl-btns{flex-direction:column;width:100%}
  #toTop{right:16px;bottom:18px;width:42px;height:42px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .nav,.btn,.nav-btn,#toTop,.work-card,.intro-card,.feat-card,.data-card,.rev-card,.faq-item,.faq-a,.faq-x::after{transition:none}
}