/*
 * ra2-tools 站点全局 CSS
 * 来源：_common.py build() 内联样式外部化 (2025-06-05)
 * 包含：金山主导航、子站二级导航、Hero、Hub卡片、FAQ、CTA、内容页、Footer
 */

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: #374151;
  background: #fff;
}

a { color: #2563eb; text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── 金山毒霸主导航 ── */
.ks-header{background:#fff;border-bottom:1px solid #EFF4F8;position:sticky;top:0;z-index:200;box-shadow:0 1px 4px rgba(0,0,0,.06)}
.ks-header-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;height:56px;padding:0 20px}
.ks-logo{display:flex;align-items:center;margin-right:8px;flex-shrink:0}
.ks-logo img{height:36px}
.ks-logo-txt{font-size:18px;font-weight:700;color:#20B7F8;text-decoration:none}
.ks-nav{display:flex;align-items:center;flex:1}
.ks-nav-item{position:relative;height:56px;display:flex;align-items:center}
.ks-nav-item>a,.ks-nav-item>span{display:flex;align-items:center;gap:4px;padding:0 14px;height:56px;font-size:14px;color:#111;text-decoration:none;white-space:nowrap;cursor:pointer;border-radius:8px;transition:background .15s,color .15s}
.ks-nav-item:hover>a,.ks-nav-item:hover>span{background:rgba(183,233,255,.25);color:#20B7F8}
.ks-arrow{width:8px;height:6px;flex-shrink:0}
.ks-drop{display:none;position:absolute;top:100%;left:50%;transform:translateX(-50%);padding-top:12px;z-index:300}
.ks-nav-item:hover .ks-drop{display:block}
.ks-drop-inner{display:flex;padding:28px 24px;border-radius:8px;background:linear-gradient(180deg,#edfbff 0,#fff 100%);box-shadow:0 16px 40px rgba(0,0,0,.1);white-space:nowrap}
.ks-drop-col{padding:0 16px;min-width:112px;font-size:14px;display:flex;flex-direction:column}
.ks-drop-col:first-child{padding-left:0}
.ks-drop-col:last-child{padding-right:0}
.ks-drop-col+.ks-drop-col{border-left:1px solid #EFF4F8}
.ks-drop-col-title{font-weight:900;color:#111;margin-bottom:8px}
.ks-drop-col a{display:block;margin-top:14px;color:#111;text-decoration:none;font-size:14px}
.ks-drop-col a:hover{color:#20B7F8}
.ks-nav-special{margin-left:4px}
/* ── 子站二级导航 ── */
.ks-subnav{background:#fff;border-bottom:2px solid #2563eb;position:sticky;top:56px;z-index:190}
.ks-subnav-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;height:44px;padding:0 20px;gap:4px}
.ks-subnav-inner a{padding:0 16px;height:44px;line-height:44px;font-size:14px;font-weight:500;color:#374151;text-decoration:none;border-radius:4px 4px 0 0;transition:background .15s,color .15s}
.ks-subnav-inner a:hover{color:#2563eb;background:#EFF6FF}
.ks-subnav-inner a.active{background:#2563eb;color:#fff}
/* ── Hero ── */
.hero-v2{background:linear-gradient(180deg,#EFF6FF 0,#fff 100%);padding:28px 0 20px;text-align:center}
.hero-v2 h1{margin:0 0 8px;font-size:24px;color:#111}
.hero-sub{font-size:15px;color:#666;max-width:640px;margin:0 auto 16px;line-height:1.6}
.cta-primary{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;background:linear-gradient(180deg,#2563eb,#1d4ed8);color:#fff;font-size:16px;font-weight:600;border-radius:8px;text-decoration:none;transition:transform .1s}
.cta-primary:hover{transform:scale(1.02);color:#fff}
.cta-meta{font-size:13px;color:#999;margin-top:12px}
.meta-bar{margin:0 auto;max-width:1200px;padding:12px 20px;font-size:13px;color:#999;text-align:right}
/* ── Hub 卡片网格 ── */
.hub-grid-v2{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;margin:24px 0}
.hub-card-v2{background:#fff;border:1px solid #EFF4F8;border-radius:8px;padding:24px;transition:box-shadow .15s;text-decoration:none;display:block}
.hub-card-v2:hover{box-shadow:0 4px 16px rgba(0,0,0,.08)}
.hub-card-v2 .card-icon{width:40px;height:40px;border-radius:8px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;color:#2563eb}
.hub-card-v2 h3{margin:0 0 8px;font-size:16px;color:#111}
.hub-card-v2 p{margin:0 0 12px;font-size:14px;color:#666;line-height:1.6}
.card-arrow{font-size:13px;color:#2563eb;font-weight:500}
/* ── FAQ ── */
.faq-v2{margin:24px 0}
.faq-item-v2{margin-bottom:20px;padding-bottom:16px;border-bottom:1px solid #EFF4F8}
.faq-q{font-size:16px;font-weight:600;color:#111;margin-bottom:8px}
.faq-a{font-size:14px;color:#444;line-height:1.7;margin:0}
/* ── CTA Section ── */
.cta-section-v2{text-align:center;padding:40px 0 48px;background:#fff;border-top:1px solid #EFF4F8}
.cta-section-v2 h2{font-size:22px;color:#111;margin:0 0 8px}
.cta-section-v2 p{font-size:15px;color:#666;margin:0 0 20px}
/* ── Content pages ── */
.content-section{font-size:16px;line-height:1.8;color:#374151}
.content-section h1{font-size:32px;font-weight:800;color:#111827;margin-bottom:24px;line-height:1.3}
.content-section h2{font-size:24px;font-weight:700;color:#111827;margin:40px 0 16px;padding-bottom:8px;border-bottom:2px solid #EFF4F8}
.content-section h3{font-size:18px;font-weight:700;margin:24px 0 12px;color:#111827}
.content-section p{font-size:16px;color:#374151;line-height:1.8;margin:0 0 16px}
.content-section table{width:100%;border-collapse:collapse;margin:24px 0}
.content-section th,.content-section td{border:1px solid #E5E7EB;padding:12px 16px;text-align:left;font-size:15px;line-height:1.6}
.content-section th{background:#f8fafc;font-weight:700;color:#111827;border-bottom:2px solid #E5E7EB}
.content-section td{color:#374151}
.content-section code{background:#f1f5f9;padding:2px 6px;border-radius:3px;font-size:13px;color:#2563eb}
.content-section .code-block{background:#111827;padding:16px 20px;border-radius:8px;font-family:monospace;font-size:13px;color:#e2e8f0;margin:24px 0;white-space:pre-wrap;word-break:break-all;line-height:1.6}
.content-section .content-blockquote{border-left:4px solid #2563eb;background:#f8fafc;padding:14px 18px;margin:24px 0;border-radius:0 8px 8px 0}
.content-section .content-blockquote p{margin:0;font-style:italic;color:#666;font-size:15px}
.content-section ul,.content-section ol{margin:8px 0 20px 20px;font-size:16px;color:#374151;line-height:1.8}
.content-section li{margin-bottom:8px}
/* ── Footer ── */
.footer{background:#f8fafc;padding:40px 0 32px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:24px;max-width:1200px;margin:0 auto;padding:0 20px}
.footer-col h4{font-size:14px;font-weight:600;margin:0 0 12px;color:#111}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{margin-bottom:8px}
.footer-col a{color:#666;text-decoration:none;font-size:13px}
.footer-col a:hover{color:#2563eb}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* ── 面包屑 ── */
.breadcrumb{padding:12px 20px;font-size:13px;color:#666;max-width:1200px;margin:0 auto}
.breadcrumb ol{list-style:none;padding:0;margin:0;display:flex;align-items:center;flex-wrap:wrap;gap:4px}
.breadcrumb li{display:inline-flex;align-items:center}
.breadcrumb li+li::before{content:"›";margin:0 6px;color:#999;font-size:15px}
.breadcrumb a{color:#666;text-decoration:none}
.breadcrumb a:hover{color:#2563eb}

/* ── 响应式 ── */
@media (max-width: 768px) {
  .hero-v2 h1 { font-size: 20px; }
  .hero-v2 .hero-sub { font-size: 14px; }
  .hub-grid-v2 { grid-template-columns: 1fr; gap: 12px; }
  .content-section h1 { font-size: 24px; }
  .content-section h2 { font-size: 20px; }
  .cta-section-v2 { padding: 28px 20px; }
  .cta-section-v2 h2 { font-size: 20px; }
  .ks-nav { overflow-x: auto; }
}
@media (max-width: 480px) {
  .ks-nav-item>a, .ks-nav-item>span { padding: 0 8px; font-size: 12px; }
  .hero-v2 h1 { font-size: 18px; }
}