*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--wps-red:#e2231a;--wps-red-dark:#c41e17;--wps-blue:#4285f4;--text-primary:#1a1a1a;--text-secondary:#666;--text-light:#999;--bg-light:#f7f8fa;--bg-white:#fff;--border:#e8e8e8;--shadow:0 4px 24px rgba(0,0,0,.08);--radius:8px;--max-width:1200px}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--text-primary);line-height:1.6;background:var(--bg-white)}
a{color:inherit;text-decoration:none;transition:color .2s}
img{max-width:100%;display:block}
.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}

/* Header */
.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);transition:box-shadow .3s}
.site-header.scrolled{box-shadow:var(--shadow)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:700;color:var(--wps-red)}
.logo-icon{width:36px;height:36px;background:var(--wps-red);border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:18px}
.main-nav{display:flex;align-items:center;gap:32px}
.main-nav a{font-size:15px;color:var(--text-secondary);position:relative}
.main-nav a:hover,.main-nav a.active{color:var(--wps-red)}
.main-nav a.active::after{content:'';position:absolute;bottom:-4px;left:0;right:0;height:2px;background:var(--wps-red);border-radius:1px}
.btn-download-nav{background:var(--wps-red);color:#fff!important;padding:8px 24px;border-radius:20px;font-size:14px;font-weight:500;transition:background .2s,transform .2s}
.btn-download-nav:hover{background:var(--wps-red-dark);transform:translateY(-1px)}
.mobile-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px}
.mobile-toggle span{display:block;width:22px;height:2px;background:var(--text-primary);margin:5px 0;transition:.3s}

/* Hero */
.hero{padding:120px 0 80px;background:linear-gradient(135deg,#fff 0%,#f0f4ff 50%,#fff5f5 100%);overflow:hidden;position:relative}
.hero::before{content:'';position:absolute;top:-50%;right:-20%;width:600px;height:600px;background:radial-gradient(circle,rgba(226,35,26,.06) 0%,transparent 70%);border-radius:50%}
.hero-content{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;position:relative;z-index:1}
.hero-text h1{font-size:48px;font-weight:800;line-height:1.2;margin-bottom:20px;background:linear-gradient(135deg,var(--text-primary) 0%,var(--wps-red) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-text p{font-size:18px;color:var(--text-secondary);margin-bottom:32px;line-height:1.8}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.btn-primary{display:inline-flex;align-items:center;gap:8px;background:var(--wps-red);color:#fff;padding:14px 36px;border-radius:28px;font-size:16px;font-weight:600;border:none;cursor:pointer;transition:all .3s;box-shadow:0 4px 16px rgba(226,35,26,.3)}
.btn-primary:hover{background:var(--wps-red-dark);transform:translateY(-2px);box-shadow:0 6px 24px rgba(226,35,26,.4)}
.btn-secondary{display:inline-flex;align-items:center;gap:8px;background:#fff;color:var(--text-primary);padding:14px 36px;border-radius:28px;font-size:16px;font-weight:500;border:1px solid var(--border);cursor:pointer;transition:all .3s}
.btn-secondary:hover{border-color:var(--wps-red);color:var(--wps-red)}
.hero-visual{background:linear-gradient(145deg,#fff,#f0f4ff);border-radius:16px;padding:40px;box-shadow:var(--shadow);aspect-ratio:4/3;display:flex;align-items:center;justify-content:center}
.hero-visual-inner{text-align:center}
.hero-visual-inner .app-icon{width:80px;height:80px;background:var(--wps-red);border-radius:20px;margin:0 auto 16px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:36px;font-weight:800}
.hero-visual-inner h3{font-size:20px;margin-bottom:8px}
.hero-visual-inner p{color:var(--text-secondary);font-size:14px}

/* Sections */
.section{padding:80px 0}
.section-alt{background:var(--bg-light)}
.section-header{text-align:center;margin-bottom:56px}
.section-header h2{font-size:36px;font-weight:700;margin-bottom:16px}
.section-header p{font-size:16px;color:var(--text-secondary);max-width:600px;margin:0 auto}

/* Feature Grid */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.feature-card{background:#fff;border-radius:var(--radius);padding:36px 28px;transition:all .3s;border:1px solid transparent}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--border)}
.feature-icon{width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:28px;margin-bottom:20px}
.feature-icon.red{background:rgba(226,35,26,.1);color:var(--wps-red)}
.feature-icon.blue{background:rgba(66,133,244,.1);color:var(--wps-blue)}
.feature-icon.green{background:rgba(52,168,83,.1);color:#34a853}
.feature-card h3{font-size:20px;margin-bottom:12px;font-weight:600}
.feature-card p{color:var(--text-secondary);font-size:15px;line-height:1.7}

/* Platform Download */
.platform-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.platform-card{background:#fff;border-radius:var(--radius);padding:32px 24px;text-align:center;border:1px solid var(--border);transition:all .3s}
.platform-card:hover{border-color:var(--wps-red);box-shadow:var(--shadow)}
.platform-card .platform-icon{font-size:40px;margin-bottom:16px}
.platform-card h3{font-size:16px;margin-bottom:8px;font-weight:600}
.platform-card p{font-size:13px;color:var(--text-light);margin-bottom:16px}
.platform-card .btn-sm{display:inline-block;background:var(--wps-red);color:#fff;padding:8px 24px;border-radius:20px;font-size:13px;font-weight:500;transition:background .2s}
.platform-card .btn-sm:hover{background:var(--wps-red-dark)}

/* Articles Preview */
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.article-card{background:#fff;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);transition:all .3s}
.article-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.article-card-thumb{height:180px;background:linear-gradient(135deg,#f0f4ff,#fff5f5);display:flex;align-items:center;justify-content:center;font-size:48px}
.article-card-body{padding:24px}
.article-card-body .tag{display:inline-block;background:rgba(226,35,26,.08);color:var(--wps-red);font-size:12px;padding:4px 12px;border-radius:12px;margin-bottom:12px}
.article-card-body h3{font-size:18px;margin-bottom:8px;font-weight:600;line-height:1.4}
.article-card-body p{font-size:14px;color:var(--text-secondary);margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.article-card-body .read-more{color:var(--wps-red);font-size:14px;font-weight:500}
.article-card-body .read-more:hover{text-decoration:underline}

/* Download Page */
.download-hero{padding:120px 0 60px;background:linear-gradient(135deg,#fff5f5,#f0f4ff);text-align:center}
.download-hero h1{font-size:42px;font-weight:800;margin-bottom:16px}
.download-hero p{font-size:18px;color:var(--text-secondary);max-width:640px;margin:0 auto 40px}
.download-main-card{max-width:480px;margin:0 auto;background:#fff;border-radius:16px;padding:48px;box-shadow:var(--shadow);text-align:center}
.download-main-card .app-logo{width:96px;height:96px;background:var(--wps-red);border-radius:24px;margin:0 auto 24px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:42px;font-weight:800}
.download-main-card h2{font-size:24px;margin-bottom:8px}
.download-main-card .version{color:var(--text-light);font-size:14px;margin-bottom:24px}
.download-main-card .btn-primary{width:100%;justify-content:center;font-size:18px;padding:16px}
.download-info{margin-top:16px;font-size:13px;color:var(--text-light)}

/* Article Page */
.article-page{padding:100px 0 80px}
.article-page .container{max-width:800px}
.article-meta{display:flex;gap:16px;align-items:center;margin-bottom:24px;font-size:14px;color:var(--text-light)}
.article-meta .tag{background:rgba(226,35,26,.08);color:var(--wps-red);padding:4px 12px;border-radius:12px;font-size:12px}
.article-page h1{font-size:36px;font-weight:800;line-height:1.3;margin-bottom:24px}
.article-content{font-size:16px;line-height:1.9;color:var(--text-primary)}
.article-content h2{font-size:24px;font-weight:700;margin:40px 0 16px;padding-left:12px;border-left:4px solid var(--wps-red)}
.article-content h3{font-size:20px;font-weight:600;margin:32px 0 12px}
.article-content p{margin-bottom:16px;color:var(--text-secondary)}
.article-content ul,.article-content ol{margin:16px 0 16px 24px;color:var(--text-secondary)}
.article-content li{margin-bottom:8px}
.article-content blockquote{border-left:4px solid var(--wps-red);padding:16px 24px;background:var(--bg-light);margin:24px 0;border-radius:0 var(--radius) var(--radius) 0;font-style:italic;color:var(--text-secondary)}

/* Sitemap Page */
.sitemap-page{padding:100px 0 80px}
.sitemap-page h1{font-size:36px;font-weight:800;margin-bottom:32px;text-align:center}
.sitemap-list{max-width:640px;margin:0 auto}
.sitemap-group{margin-bottom:32px}
.sitemap-group h2{font-size:20px;font-weight:600;margin-bottom:16px;color:var(--wps-red);padding-bottom:8px;border-bottom:2px solid var(--border)}
.sitemap-group ul{list-style:none}
.sitemap-group li{padding:10px 0;border-bottom:1px solid var(--border)}
.sitemap-group li a{color:var(--text-secondary);font-size:15px;display:flex;justify-content:space-between;align-items:center}
.sitemap-group li a:hover{color:var(--wps-red)}
.sitemap-group li a span{font-size:13px;color:var(--text-light)}

/* Footer */
.site-footer{background:#1a1a2e;color:rgba(255,255,255,.7);padding:60px 0 24px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand .logo{color:#fff;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.7}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;transition:color .2s}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;text-align:center;font-size:13px}

/* Responsive */
@media(max-width:992px){
  .hero-content{grid-template-columns:1fr;text-align:center}
  .hero-text h1{font-size:36px}
  .hero-btns{justify-content:center}
  .hero-visual{max-width:480px;margin:0 auto}
  .feature-grid,.article-grid{grid-template-columns:repeat(2,1fr)}
  .platform-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .main-nav{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;padding:20px;gap:16px;border-bottom:1px solid var(--border);box-shadow:var(--shadow)}
  .main-nav.open{display:flex}
  .mobile-toggle{display:block}
  .feature-grid,.article-grid,.platform-grid{grid-template-columns:1fr}
  .hero-text h1{font-size:28px}
  .section-header h2{font-size:28px}
  .footer-grid{grid-template-columns:1fr}
  .article-page h1{font-size:28px}
}