*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;background:#f5f7f5;color:#1a1a2e;line-height:1.6}
a{text-decoration:none;color:inherit;transition:color .2s}
img{max-width:100%;height:auto}

/* NAV */
.nav{background:#fff;border-bottom:1px solid #e0e8e0;position:sticky;top:0;z-index:100}
.nav-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:0 24px;height:64px}
.nav-logo{display:flex;align-items:center;gap:8px;font-weight:800;font-size:20px;color:#00C853}
.nav-logo span{background:#00C853;color:#fff;padding:2px 8px;border-radius:6px;font-size:14px}
.nav-links{display:flex;gap:28px;font-size:15px;font-weight:500;color:#555}
.nav-links a:hover{color:#00C853}
.nav-dl{background:#FF6D00;color:#fff;padding:8px 20px;border-radius:8px;font-weight:600;font-size:14px;display:none}
.nav-dl:hover{background:#e65100}
.menu-toggle{display:none;background:none;border:none;font-size:24px;cursor:pointer;color:#1a1a2e}
.mobile-menu{display:none;position:fixed;top:0;right:-280px;width:280px;height:100vh;background:#fff;z-index:200;flex-direction:column;padding:24px;transition:right .3s ease;box-shadow:-4px 0 20px rgba(0,0,0,.1)}
.mobile-menu.active{right:0;display:flex}
.mobile-menu a{padding:12px 0;border-bottom:1px solid #f0f0f0;font-size:16px;color:#333}
.mobile-menu .mobile-dl{background:#FF6D00;color:#fff;text-align:center;padding:14px;border-radius:10px;margin-top:12px;border:none;font-weight:700}
.menu-overlay{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.4);z-index:199}
.menu-overlay.active{display:block}

/* HERO */
.hero{background:linear-gradient(135deg,#00C853 0%,#009624 50%,#00695C 100%);padding:60px 24px 80px;text-align:center;color:#fff}
.hero h1{font-size:36px;font-weight:800;margin-bottom:16px;line-height:1.3}
.hero p{font-size:17px;opacity:.92;max-width:680px;margin:0 auto 32px;line-height:1.7}
.hero-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.hero-btn{padding:14px 36px;border-radius:12px;font-size:16px;font-weight:700;cursor:pointer;border:none;transition:transform .15s;display:inline-block}
.hero-btn:hover{transform:translateY(-2px)}
.hero-btn-primary{background:#FF6D00;color:#fff;box-shadow:0 4px 16px rgba(255,109,0,.35)}
.hero-btn-secondary{background:rgba(255,255,255,.18);color:#fff;border:2px solid rgba(255,255,255,.35)}
.hero-tags{display:flex;gap:12px;justify-content:center;margin-top:24px;flex-wrap:wrap}
.hero-tag{background:rgba(255,255,255,.15);padding:6px 14px;border-radius:20px;font-size:13px}

/* PLATFORMS */
.platforms{max-width:1200px;margin:-40px auto 0;padding:0 24px;position:relative;z-index:10}
.platforms-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.platform-card{background:#fff;border-radius:16px;padding:28px 20px;text-align:center;box-shadow:0 2px 12px rgba(0,0,0,.06);border:2px solid transparent;transition:border-color .2s,transform .15s}
.platform-card:hover{border-color:#00C853;transform:translateY(-3px)}
.platform-card.windows{border-color:#00C853}
.platform-icon{font-size:40px;margin-bottom:12px}
.platform-card h3{font-size:17px;font-weight:700;margin-bottom:6px}
.platform-card p{font-size:13px;color:#777;margin-bottom:16px}
.platform-dl{display:inline-block;background:#FF6D00;color:#fff;padding:10px 24px;border-radius:8px;font-weight:600;font-size:14px}
.platform-card.windows .platform-dl{background:linear-gradient(135deg,#FF6D00,#FF8F00);box-shadow:0 3px 12px rgba(255,109,0,.3)}

/* FEATURES */
.features{max-width:1200px;margin:60px auto 0;padding:0 24px}
.section-title{text-align:center;font-size:28px;font-weight:800;margin-bottom:8px;color:#1a1a2e}
.section-desc{text-align:center;color:#777;font-size:15px;margin-bottom:40px}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:#fff;border-radius:14px;padding:28px 24px;border-left:4px solid #00C853;box-shadow:0 1px 8px rgba(0,0,0,.04)}
.feature-card h3{font-size:16px;font-weight:700;margin-bottom:8px}
.feature-card p{font-size:14px;color:#666;line-height:1.6}

/* HOME ARTICLES */
.home-articles{max-width:1200px;margin:60px auto 0;padding:0 24px}
.home-articles-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.article-card{background:#fff;border-radius:14px;overflow:hidden;box-shadow:0 1px 8px rgba(0,0,0,.04);transition:transform .15s;display:block}
.article-card:hover{transform:translateY(-3px)}
.article-thumb{height:160px;background:linear-gradient(135deg,#e8f5e9,#c8e6c9);display:flex;align-items:center;justify-content:center;font-size:48px;overflow:hidden}
.article-thumb img{width:100%;height:100%;object-fit:cover}
.article-body{padding:18px}
.article-body h3{font-size:15px;font-weight:700;margin-bottom:8px;line-height:1.4}
.article-body p{font-size:13px;color:#777;line-height:1.5}
.article-tag{display:inline-block;background:#e8f5e9;color:#2e7d32;padding:3px 10px;border-radius:12px;font-size:12px;font-weight:600;margin-top:10px}

/* HOME CTA */
.home-cta{max-width:1200px;margin:60px auto 0;padding:0 24px}
.cta-box{background:linear-gradient(135deg,#1a1a2e,#2d2d44);border-radius:20px;padding:48px;text-align:center;color:#fff}
.cta-box h2{font-size:26px;font-weight:800;margin-bottom:12px}
.cta-box p{font-size:15px;opacity:.8;margin-bottom:28px}
.cta-btn{display:inline-block;background:#FF6D00;color:#fff;padding:14px 40px;border-radius:12px;font-weight:700;font-size:16px}
.cta-btn:hover{background:#e65100}

/* LAYOUT (article + list) */
.layout{max-width:1200px;margin:24px auto 0;padding:0 24px;display:flex;gap:32px;align-items:flex-start}
.list-layout{grid-template-columns:1fr 280px}

/* ARTICLE */
.main-content{flex:1;min-width:0;min-width:0}
.article{background:#fff;border-radius:16px;padding:36px 40px;box-shadow:0 1px 8px rgba(0,0,0,.04)}
.breadcrumb{font-size:13px;color:#999;margin-bottom:16px}
.breadcrumb a{color:#00C853}
.article-meta{display:flex;gap:16px;font-size:13px;color:#999;margin-bottom:20px;align-items:center;flex-wrap:wrap}
.article-cover{width:100%;border-radius:10px;margin-bottom:24px}
.article h1{font-size:26px;font-weight:800;line-height:1.4;margin-bottom:24px}
.art-body h2{font-size:20px;font-weight:700;margin:32px 0 14px;padding-left:12px;border-left:4px solid #00C853}
.art-body h3{font-size:16px;font-weight:700;margin:20px 0 10px}
.art-body p{font-size:15px;line-height:1.8;color:#444;margin-bottom:14px}
.art-body ul,.art-body ol{padding-left:20px;margin-bottom:14px}
.art-body li{font-size:15px;line-height:1.8;color:#444;margin-bottom:4px}
.art-body img{max-width:100%;height:auto;border-radius:10px;margin:16px 0;display:block}
.art-body blockquote{border-left:4px solid #00C853;background:#f1f8e9;padding:14px 18px;border-radius:0 8px 8px 0;margin:16px 0;font-size:14px;color:#555}
.art-body a{color:#00C853;font-weight:500}
.art-body table{width:100%;border-collapse:collapse;font-size:14px;margin:16px 0}
.art-body th{background:#f5f7f5;padding:8px 12px;text-align:left;font-weight:600;border:1px solid #e0e8e0}
.art-body td{padding:8px 12px;border:1px solid #e0e8e0}

/* In-article download banner */
.dl-banner{background:linear-gradient(135deg,#1a1a2e,#2d2d44);border-radius:14px;padding:24px;margin:24px 0;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px}
.dl-banner-text{color:#fff}
.dl-banner-text h3{color:#fff;font-size:16px;margin-bottom:4px}
.dl-banner-text p{font-size:13px;opacity:.7}
.dl-banner-btn{background:#FF6D00;color:#fff;padding:12px 28px;border-radius:10px;font-weight:700;font-size:14px;display:inline-block}

/* FAQ */
.faq{background:#fff;border-radius:16px;padding:36px 40px;margin-top:24px;box-shadow:0 1px 8px rgba(0,0,0,.04)}
.faq h2{font-size:20px;font-weight:700;margin-bottom:20px;border-left:4px solid #FF6D00;padding-left:12px}
.faq-item{border-bottom:1px solid #f0f0f0;padding:16px 0}
.faq-item:last-child{border:none}
.faq-q{font-weight:700;font-size:15px;margin-bottom:8px;color:#1a1a2e}
.faq-a{font-size:14px;color:#666;line-height:1.7}

/* SIDEBAR */
.sidebar{width:320px;flex-shrink:0;display:flex;flex-direction:column;gap:20px;position:sticky;top:80px}
.sidebar-dl{background:linear-gradient(135deg,#00C853,#009624);border-radius:16px;padding:24px;color:#fff;text-align:center}
.sidebar-dl h3{font-size:17px;font-weight:700;margin-bottom:8px}
.sidebar-dl p{font-size:13px;opacity:.85;margin-bottom:16px}
.sidebar-dl-btn{display:block;background:#FF6D00;color:#fff;padding:14px;border-radius:10px;font-weight:700;font-size:15px;margin-bottom:8px}
.sidebar-dl-btn:hover{background:#e65100}
.sidebar-dl-sub{font-size:12px;opacity:.7}
.sidebar-search{background:#fff;border-radius:14px;padding:20px;box-shadow:0 1px 8px rgba(0,0,0,.04)}
.sidebar-search h4{font-size:14px;font-weight:700;margin-bottom:10px}
.search-box{display:flex;border:2px solid #e0e8e0;border-radius:10px;overflow:hidden}
.search-box input{flex:1;padding:10px 14px;border:none;font-size:14px;outline:none}
.search-box button{background:#00C853;color:#fff;border:none;padding:10px 16px;font-weight:600;cursor:pointer}
.sidebar-related{background:#fff;border-radius:14px;padding:20px;box-shadow:0 1px 8px rgba(0,0,0,.04)}
.sidebar-related h4{font-size:14px;font-weight:700;margin-bottom:12px}
.sidebar-related a{display:block;padding:10px 0;border-bottom:1px solid #f0f0f0;font-size:14px;color:#555;line-height:1.5}
.sidebar-related a:hover{color:#00C853}
.sidebar-related a:last-child{border:none}
.sidebar-tags{background:#fff;border-radius:14px;padding:20px;box-shadow:0 1px 8px rgba(0,0,0,.04)}
.sidebar-tags h4{font-size:14px;font-weight:700;margin-bottom:12px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-item{padding:4px 12px;border-radius:14px;font-size:12px;background:#f5f7f5;color:#666}
.tag-item.hot{background:#00C853;color:#fff;font-weight:600}
.tag-item.warm{background:#e8f5e9;color:#2e7d32;font-weight:500}

/* Download page platform cards */
.dl-platforms{margin-bottom:36px}
.recommend-badge{position:absolute;top:12px;right:12px;background:#FF6D00;color:#fff;font-size:11px;font-weight:700;padding:4px 10px;border-radius:12px;box-shadow:0 2px 8px rgba(255,109,0,.3);animation:badge-pulse 2s infinite}
@keyframes badge-pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.05)}}
.platform-card{position:relative}

/* Recommended Reading */
.recommended{background:#fff;border-radius:16px;padding:36px 40px;margin-top:24px;box-shadow:0 1px 8px rgba(0,0,0,.04)}
.recommended h2{font-size:20px;font-weight:700;margin-bottom:20px;border-left:4px solid #00C853;padding-left:12px}
.rec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.rec-card{border-radius:12px;overflow:hidden;box-shadow:0 1px 6px rgba(0,0,0,.06);transition:transform .15s;display:block;background:#fff;border:1px solid #f0f0f0}
.rec-card:hover{transform:translateY(-3px);border-color:#00C853}
.rec-thumb{height:140px;background:linear-gradient(135deg,#e8f5e9,#c8e6c9);display:flex;align-items:center;justify-content:center;font-size:40px;overflow:hidden}
.rec-thumb img{width:100%;height:100%;object-fit:cover}
.rec-body{padding:14px}
.rec-body h4{font-size:14px;font-weight:700;line-height:1.4;margin-bottom:6px;color:#1a1a2e}
.rec-body p{font-size:12px;color:#888;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* LIST PAGE */
.list-content h1{font-size:24px;font-weight:800;margin-bottom:16px}
.list-desc{color:#777;font-size:15px;margin-bottom:24px}
.list-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}

/* FOOTER */
.footer{margin-top:80px;background:#1a1a2e;color:#aaa;padding:48px 24px 24px}
.footer-inner{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px}
.footer h4{color:#fff;font-size:15px;margin-bottom:12px}
.footer a{color:#aaa;font-size:13px;display:block;margin-bottom:6px}
.footer a:hover{color:#00C853}
.footer-about{font-size:13px;line-height:1.6;max-width:280px}
.footer-bottom{max-width:1200px;margin:24px auto 0;padding-top:20px;border-top:1px solid #333;text-align:center;font-size:12px;color:#666}

/* RESPONSIVE */
@media(max-width:768px){
  .hero h1{font-size:24px}
  .hero p{font-size:15px}
  .platforms-grid{grid-template-columns:repeat(2,1fr)}
  .features-grid{grid-template-columns:1fr}
  .home-articles-grid{grid-template-columns:1fr}
  .layout{flex-direction:column}.list-layout{grid-template-columns:1fr}
  .sidebar{order:2;width:100%;position:static}
  .article{padding:24px 18px}
  .faq{padding:24px 18px}
  .dl-banner{flex-direction:column;text-align:center}
  .footer-inner{grid-template-columns:1fr 1fr}
  .nav-links{display:none}
  .nav-dl{display:none}
  .menu-toggle{display:block}
  .list-grid{grid-template-columns:1fr}
}