/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","微软雅黑",sans-serif;
  color:#1f2937;background:#fff;line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{color:#d97706;text-decoration:none;transition:color .2s}
a:hover{color:#b45309}
img{max-width:100%;height:auto;display:block}

/* ===== Variables ===== */
:root{
  --primary:#f59e0b;
  --primary-dark:#d97706;
  --primary-light:#fef3c7;
  --text:#1f2937;
  --text-light:#6b7280;
  --border:#e5e7eb;
  --bg-gray:#f9fafb;
  --radius:12px;
  --shadow:0 1px 3px rgba(0,0,0,.08),0 1px 2px rgba(0,0,0,.06);
  --shadow-lg:0 10px 30px rgba(0,0,0,.08),0 4px 12px rgba(0,0,0,.05);
}

/* ===== Layout ===== */
.container{max-width:1080px;margin:0 auto;padding:0 20px}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.95);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--border);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:60px;
}
.logo{display:flex;align-items:center;gap:8px;font-size:1.2rem;font-weight:700;color:var(--text)}
.logo-icon{
  width:32px;height:32px;border-radius:8px;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  display:flex;align-items:center;justify-content:center;
  font-size:1.1rem;color:#fff;
}
.logo-img{
  width:32px;height:32px;border-radius:8px;object-fit:contain;flex-shrink:0;
}
.nav{display:flex;gap:24px;align-items:center}
.nav a{color:var(--text);font-size:.9rem;font-weight:500}
.nav a:hover{color:var(--primary-dark)}
.mobile-toggle{display:none;background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--text)}

/* ===== Hero ===== */
.hero{
  padding:60px 0 40px;text-align:center;
  background:linear-gradient(180deg,var(--primary-light) 0%,#fff 100%);
}
.hero h1{font-size:2.2rem;font-weight:800;margin-bottom:16px;letter-spacing:-.5px}
.hero p{font-size:1.1rem;color:var(--text-light);max-width:600px;margin:0 auto 28px}
.hero-badges{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:20px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:20px;font-size:.85rem;font-weight:500;
  background:#fff;border:1px solid var(--border);color:var(--text-light);
}
.badge svg{width:14px;height:14px}

/* ===== Software Cards ===== */
.software-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
  padding:40px 0;
}
.software-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:28px;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s;
  display:flex;flex-direction:column;
}
.software-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.card-icon{
  width:56px;height:56px;border-radius:14px;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  display:flex;align-items:center;justify-content:center;
  font-size:1.6rem;color:#fff;margin-bottom:18px;
}
.software-card h3{font-size:1.15rem;font-weight:700;margin-bottom:8px}
.software-card .card-desc{font-size:.9rem;color:var(--text-light);margin-bottom:16px;flex:1}
.card-features{list-style:none;margin-bottom:20px}
.card-features li{
  font-size:.85rem;color:var(--text);padding:4px 0;
  display:flex;align-items:center;gap:8px;
}
.card-features li::before{content:"✓";color:var(--primary-dark);font-weight:700}
.card-btn{
  display:inline-block;padding:10px 20px;border-radius:8px;
  background:var(--primary);color:#fff;text-align:center;font-weight:600;font-size:.9rem;
  transition:background .2s;
}
.card-btn:hover{background:var(--primary-dark);color:#fff}

/* ===== Section ===== */
.section{padding:48px 0}
.section-title{
  font-size:1.6rem;font-weight:800;margin-bottom:8px;text-align:center;
}
.section-subtitle{
  text-align:center;color:var(--text-light);font-size:.95rem;margin-bottom:36px;
}

/* ===== Posts Grid ===== */
.posts-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.post-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s;
  display:flex;flex-direction:column;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.post-tag{
  display:inline-block;padding:3px 10px;border-radius:4px;
  font-size:.75rem;font-weight:600;margin-bottom:12px;
  background:var(--primary-light);color:var(--primary-dark);
}
.post-card h3{font-size:1.05rem;font-weight:700;margin-bottom:8px;line-height:1.4}
.post-card p{font-size:.88rem;color:var(--text-light);margin-bottom:14px;flex:1}
.post-card .read-more{font-size:.85rem;font-weight:600;color:var(--primary-dark)}

/* ===== Article (post/product page) ===== */
.article-layout{display:grid;grid-template-columns:1fr 280px;gap:40px;padding:40px 0}
.article-main{min-width:0}
.article-sidebar{position:sticky;top:80px;align-self:start}

.breadcrumb{font-size:.85rem;color:var(--text-light);margin-bottom:20px}
.breadcrumb a{color:var(--text-light)}
.breadcrumb a:hover{color:var(--primary-dark)}
.breadcrumb span{margin:0 6px}

.article-main h1{font-size:1.8rem;font-weight:800;margin-bottom:12px;line-height:1.3}
.article-meta{
  display:flex;gap:16px;font-size:.85rem;color:var(--text-light);
  margin-bottom:28px;padding-bottom:20px;border-bottom:1px solid var(--border);
}
.article-meta span{display:flex;align-items:center;gap:4px}

.article-content{font-size:1rem;line-height:1.85}
.article-content h2{
  font-size:1.35rem;font-weight:700;margin:32px 0 16px;
  padding-bottom:8px;border-bottom:2px solid var(--primary-light);
}
.article-content h3{font-size:1.1rem;font-weight:700;margin:24px 0 12px}
.article-content p{margin-bottom:16px}
.article-content ul,.article-content ol{margin:0 0 16px 20px}
.article-content li{margin-bottom:8px}
.article-content blockquote{
  border-left:4px solid var(--primary);padding:12px 20px;
  background:var(--bg-gray);border-radius:0 8px 8px 0;margin:20px 0;
  color:var(--text-light);
}
.article-content img{border-radius:8px;margin:20px 0}
.article-content code{
  background:var(--bg-gray);padding:2px 6px;border-radius:4px;
  font-size:.9rem;font-family:"Consolas","Monaco",monospace;
}
.article-content pre{
  background:#1f2937;color:#e5e7eb;padding:16px;border-radius:8px;
  overflow-x:auto;margin:16px 0;font-size:.88rem;
}
.article-content pre code{background:none;padding:0;color:inherit}

/* ===== CTA Box ===== */
.cta-box{
  background:linear-gradient(135deg,var(--primary-light),#fff);
  border:1px solid var(--primary);border-radius:var(--radius);
  padding:24px;margin:28px 0;text-align:center;
}
.cta-box h3{font-size:1.15rem;font-weight:700;margin-bottom:8px}
.cta-box p{font-size:.9rem;color:var(--text-light);margin-bottom:16px}
.cta-btn{
  display:inline-block;padding:12px 32px;border-radius:8px;
  background:var(--primary);color:#fff;font-weight:700;font-size:1rem;
  transition:background .2s,transform .1s;
}
.cta-btn:hover{background:var(--primary-dark);color:#fff;transform:scale(1.02)}
.cta-btn:active{transform:scale(.98)}

/* ===== FAQ ===== */
.faq-item{border:1px solid var(--border);border-radius:8px;margin-bottom:12px;overflow:hidden}
.faq-question{
  padding:16px 20px;font-weight:600;cursor:pointer;
  display:flex;justify-content:space-between;align-items:center;
  background:var(--bg-gray);font-size:.95rem;
}
.faq-question::after{content:"+";font-size:1.2rem;color:var(--primary-dark);transition:transform .2s}
.faq-item.open .faq-question::after{transform:rotate(45deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 20px}
.faq-item.open .faq-answer{max-height:400px;padding:16px 20px}
.faq-answer p{font-size:.9rem;color:var(--text-light)}

/* ===== Sidebar Widget ===== */
.sidebar-widget{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:20px;margin-bottom:20px;
}
.sidebar-widget h4{font-size:1rem;font-weight:700;margin-bottom:14px}
.sidebar-widget ul{list-style:none}
.sidebar-widget li{padding:8px 0;border-bottom:1px solid var(--border)}
.sidebar-widget li:last-child{border-bottom:none}
.sidebar-widget a{font-size:.88rem;color:var(--text);display:block}
.sidebar-widget a:hover{color:var(--primary-dark)}
.sidebar-cta{
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  color:#fff;text-align:center;border:none;
}
.sidebar-cta h4{color:#fff}
.sidebar-cta p{font-size:.85rem;margin-bottom:14px;opacity:.9}
.sidebar-cta .cta-btn{background:#fff;color:var(--primary-dark)}
.sidebar-cta .cta-btn:hover{background:var(--bg-gray)}

/* ===== Features Grid ===== */
.features-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin:24px 0}
.feature-item{
  background:var(--bg-gray);border-radius:8px;padding:20px;
  display:flex;gap:14px;
}
.feature-icon{
  width:40px;height:40px;border-radius:10px;flex-shrink:0;
  background:var(--primary-light);display:flex;align-items:center;justify-content:center;
  font-size:1.2rem;
}
.feature-item h4{font-size:.95rem;font-weight:700;margin-bottom:4px}
.feature-item p{font-size:.85rem;color:var(--text-light)}

/* ===== Steps ===== */
.steps{counter-reset:step;margin:24px 0}
.step{
  position:relative;padding:20px 20px 20px 60px;
  border-left:2px solid var(--primary);margin-left:20px;
}
.step::before{
  counter-increment:step;content:counter(step);
  position:absolute;left:-18px;top:20px;
  width:34px;height:34px;border-radius:50%;
  background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:.9rem;
}
.step h4{font-size:1rem;font-weight:700;margin-bottom:6px}
.step p{font-size:.9rem;color:var(--text-light)}

/* ===== Footer ===== */
.site-footer{
  background:#1f2937;color:#9ca3af;padding:40px 0 20px;margin-top:40px;
}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:32px;margin-bottom:24px}
.footer-brand p{font-size:.85rem;margin-top:12px;line-height:1.6}
.footer-links h5{color:#fff;font-size:.9rem;margin-bottom:12px}
.footer-links ul{list-style:none}
.footer-links li{margin-bottom:8px}
.footer-links a{color:#9ca3af;font-size:.85rem}
.footer-links a:hover{color:var(--primary)}
.footer-bottom{
  border-top:1px solid #374151;padding-top:16px;
  text-align:center;font-size:.8rem;color:#6b7280;
}

/* ===== Responsive ===== */
@media(max-width:900px){
  .software-grid{grid-template-columns:1fr}
  .posts-grid{grid-template-columns:repeat(2,1fr)}
  .article-layout{grid-template-columns:1fr}
  .article-sidebar{position:static}
  .footer-grid{grid-template-columns:1fr}
}
@media(max-width:600px){
  .hero h1{font-size:1.6rem}
  .hero p{font-size:1rem}
  .posts-grid{grid-template-columns:1fr}
  .features-grid{grid-template-columns:1fr}
  .nav{display:none}
  .mobile-toggle{display:block}
  .nav.open{display:flex;flex-direction:column;position:absolute;top:60px;left:0;right:0;background:#fff;border-bottom:1px solid var(--border);padding:16px 20px;gap:16px}
  .article-main h1{font-size:1.4rem}
}