/* 紧凑实用 Compact Utility - Google SEO Optimized */
/* Generated by SEO-CMS Template Generator */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --primary: #37474f;
  --accent: #546e7a;
  --highlight: #00bfa5;
  --bg: #fafafa;
  --bg-alt: #ffffff;
  --text: #263238;
  --text-light: #607d8b;
  --border: #cfd8dc;
  --font-heading: 'Rubik', 'Helvetica Neue', sans-serif;
  --font-body: 'Noto Sans', 'Segoe UI', sans-serif;
  --max-width: 1200px;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-hover: 0 4px 14px rgba(0,0,0,0.12);
}

/* Reset */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-body);color:var(--text);background:var(--bg);
  line-height:1.7;-webkit-font-smoothing:antialiased
}

/* Typography */
h1,h2,h3,h4,h5,h6{
  font-family:var(--font-heading);color:var(--primary);line-height:1.3;
  margin-bottom:.5em;font-weight:700
}
h1{font-size:clamp(1.75rem,4vw,2.5rem)}
h2{font-size:clamp(1.4rem,3vw,1.9rem)}
h3{font-size:clamp(1.15rem,2vw,1.4rem)}
h4{font-size:1.1rem}
p{margin-bottom:1.2em}

a{color:var(--highlight);text-decoration:none;transition:color .2s}
a:hover{color:var(--accent);text-decoration:underline}
a:focus-visible{outline:2px solid var(--highlight);outline-offset:2px}

img{max-width:100%;height:auto;display:block;border-radius:var(--radius)}

/* Skip Link */
.skip-link{position:absolute;top:-100px;left:0;background:var(--highlight);color:#fff;padding:8px 16px;z-index:9999;transition:top .2s}
.skip-link:focus{top:0}

/* Header */
.site-header{background:var(--primary);color:#fff;position:sticky;top:0;z-index:100;box-shadow:0 2px 8px rgba(0,0,0,.15)}
.header-inner{max-width:var(--max-width);margin:0 auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}
.site-logo{font-family:var(--font-heading);font-size:1.4rem;font-weight:700;color:#fff;text-decoration:none}
.site-logo:hover{color:var(--highlight);text-decoration:none}

.main-nav ul{list-style:none;display:flex;gap:8px;flex-wrap:wrap}
.main-nav a{color:rgba(255,255,255,.85);padding:6px 14px;border-radius:4px;font-size:.92rem;transition:background .2s,color .2s;text-decoration:none}
.main-nav a:hover,.main-nav a.active{background:rgba(255,255,255,.15);color:#fff;text-decoration:none}

.menu-toggle{display:none;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer;padding:4px 8px}

@media(max-width:768px){
  .menu-toggle{display:block}
  .main-nav{display:none;width:100%}
  .main-nav.open{display:block}
  .main-nav ul{flex-direction:column;gap:2px}
  .header-inner{padding:10px 16px}
}

/* Layout */
.container{max-width:var(--max-width);margin:0 auto;padding:0 20px}
.content-area{display:flex;gap:32px;padding:32px 0}
@media(max-width:768px){.content-area{flex-direction:column;gap:24px;padding:20px 0}}
.main-content{flex:1;min-width:0}

.sidebar{width:300px;flex-shrink:0}
@media(max-width:768px){.sidebar{width:100%}}

.sidebar-widget{background:var(--bg-alt);border-radius:var(--radius);padding:20px;margin-bottom:24px;border:1px solid var(--border)}
.sidebar-widget h3{font-size:1.1rem;margin-bottom:12px;padding-bottom:8px;border-bottom:2px solid var(--highlight)}
.sidebar-widget ul{list-style:none}
.sidebar-widget li{padding:6px 0;border-bottom:1px solid var(--border)}
.sidebar-widget li:last-child{border-bottom:none}

/* Article Card */
.article-card{background:var(--bg-alt);border-radius:var(--radius);overflow:hidden;margin-bottom:24px;border:1px solid var(--border);transition:transform .2s,box-shadow .2s}
.article-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.article-card-image img{width:100%;height:220px;object-fit:cover;border-radius:var(--radius) var(--radius) 0 0}
.article-card-body{padding:20px}
.article-card-body h2{font-size:1.3rem;margin-bottom:8px}
.article-card-body h2 a{color:var(--primary)}
.article-card-body h2 a:hover{color:var(--highlight)}
.article-card-meta{font-size:.82rem;color:var(--text-light);margin-bottom:10px;display:flex;flex-wrap:wrap;gap:12px}
.article-card-excerpt{color:var(--text-light);font-size:.95rem;line-height:1.6}
.read-more{display:inline-block;margin-top:12px;font-weight:600;font-size:.9rem}

/* Article Full */
.article-full{background:var(--bg-alt);border-radius:var(--radius);padding:32px;border:1px solid var(--border)}
@media(max-width:768px){.article-full{padding:20px}}
.article-full h1{font-size:clamp(1.8rem,5vw,2.6rem);margin-bottom:16px;line-height:1.25}
.article-meta{color:var(--text-light);font-size:.88rem;padding:12px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border);margin-bottom:24px;display:flex;flex-wrap:wrap;gap:16px}
.article-featured-image{margin-bottom:24px;border-radius:var(--radius);overflow:hidden}
.article-featured-image img{width:100%;max-height:500px;object-fit:cover}
.article-content{font-size:1.05rem;line-height:1.85}
.article-content p{margin-bottom:1.3em}
.article-content img{margin:20px auto}
.article-content blockquote{border-left:4px solid var(--highlight);padding:12px 20px;margin:20px 0;background:var(--bg);border-radius:0 var(--radius) var(--radius) 0;color:var(--text-light);font-style:italic}
.article-content ul,.article-content ol{margin:12px 0 20px 24px}
.article-content li{margin-bottom:6px}
.article-content code{background:var(--bg);padding:2px 6px;border-radius:3px;font-size:.9em}
.article-content pre{background:var(--primary);color:#e0e0e0;padding:18px;border-radius:var(--radius);overflow-x:auto;margin:20px 0}

/* Breadcrumb */
.breadcrumb{padding:12px 0;font-size:.85rem;color:var(--text-light)}
.breadcrumb a{color:var(--text-light)}
.breadcrumb a:hover{color:var(--highlight)}
.breadcrumb .separator{margin:0 8px}

/* Category */
.category-header{background:var(--accent);color:#fff;padding:40px 0;margin-bottom:32px}
.category-header h1{color:#fff;font-size:2rem;margin-bottom:8px}
.category-header p{opacity:.9;font-size:1.05rem}
.category-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px}
@media(max-width:768px){.category-grid{grid-template-columns:1fr}}

/* Pagination */
.pagination{display:flex;justify-content:center;gap:6px;padding:32px 0}
.pagination a,.pagination span{padding:8px 14px;border:1px solid var(--border);border-radius:4px;font-size:.9rem;color:var(--text);text-decoration:none;transition:all .2s}
.pagination a:hover{background:var(--highlight);color:#fff;border-color:var(--highlight);text-decoration:none}
.pagination .current{background:var(--primary);color:#fff;border-color:var(--primary)}

/* Friend Links (Static HTML for SEO) */
.friend-links{padding:24px 0;border-top:1px solid var(--border);margin-top:24px}
.friend-links h4{font-size:.95rem;margin-bottom:12px;color:var(--text-light)}
.friend-links-grid{display:flex;flex-wrap:wrap;gap:10px}
.friend-link-item{display:inline-block;padding:5px 12px;background:var(--bg);border:1px solid var(--border);border-radius:4px;font-size:.85rem;transition:all .2s}
.friend-link-item:hover{background:var(--highlight);color:#fff;border-color:var(--highlight);text-decoration:none}

/* Ads */
.ad-container{text-align:center;margin:24px 0;min-height:90px;overflow:hidden}

/* Footer */
.site-footer{background:var(--primary);color:rgba(255,255,255,.8);padding:40px 0 20px;margin-top:60px;font-size:.9rem}
.footer-grid{max-width:var(--max-width);margin:0 auto;padding:0 20px;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:32px;margin-bottom:32px}
.footer-col h4{color:#fff;margin-bottom:14px;font-size:1rem}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:8px}
.footer-col a{color:rgba(255,255,255,.7);font-size:.88rem}
.footer-col a:hover{color:var(--highlight)}
.footer-bottom{max-width:var(--max-width);margin:0 auto;padding:20px 20px 0;border-top:1px solid rgba(255,255,255,.1);text-align:center;color:rgba(255,255,255,.5);font-size:.82rem}

/* TOC */
.toc{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:24px}
.toc h3{font-size:1rem;margin-bottom:10px}
.toc ol{margin-left:20px;font-size:.9rem}
.toc li{margin-bottom:6px}

/* Related */
.related-articles{margin-top:40px;padding-top:24px;border-top:2px solid var(--border)}
.related-articles h3{margin-bottom:16px}
.related-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}

/* Author Box */
.author-box{display:flex;gap:16px;align-items:flex-start;background:var(--bg);border-radius:var(--radius);padding:20px;margin-top:32px;border:1px solid var(--border)}
.author-avatar{width:60px;height:60px;border-radius:50%;background:var(--accent);flex-shrink:0}
.author-info h4{margin-bottom:4px;font-size:1rem}
.author-info p{font-size:.88rem;color:var(--text-light);margin-bottom:0}
@media(max-width:768px){.author-box{flex-direction:column;align-items:center;text-align:center}}

/* Utility */
.text-center{text-align:center}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}

/* Print */
@media print{
  .site-header,.site-footer,.sidebar,.ad-container,.friend-links,nav{display:none}
  body{font-size:12pt}
  .article-full{border:none;padding:0}
}

img[loading="lazy"]{opacity:1;transition:opacity .3s}

/* Template-specific layout variations */
.layout-sidebar-left .content-area{flex-direction:row-reverse}
.layout-sidebar-right .content-area{flex-direction:row}

/* Card grid layout */
.card-grid-layout .main-content{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(340px,1fr));
  gap:24px
}
@media(max-width:768px){.card-grid-layout .main-content{grid-template-columns:1fr}}

/* Bento grid layout */
.bento-grid-layout .main-content{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  grid-template-rows:auto;
  gap:20px
}
.bento-grid-layout .article-card:first-child{grid-column:span 2;grid-row:span 2}
.bento-grid-layout .article-card:nth-child(2),
.bento-grid-layout .article-card:nth-child(3){grid-column:span 2}
@media(max-width:768px){
  .bento-grid-layout .main-content{grid-template-columns:1fr}
  .bento-grid-layout .article-card:first-child,.bento-grid-layout .article-card:nth-child(2),.bento-grid-layout .article-card:nth-child(3){grid-column:span 1}
}

/* News grid layout */
.news-grid-layout .main-content{
  display:grid;
  grid-template-columns:2fr 1fr;
  gap:20px
}
.news-grid-layout .article-card:first-child .article-card-image img{height:350px}
@media(max-width:768px){.news-grid-layout .main-content{grid-template-columns:1fr}}

/* Color-block card style */
.card-style-color-block .article-card{
  border-left:4px solid var(--highlight);
  border-radius:0 var(--radius) var(--radius) 0
}

/* Rounded card style */
.card-style-rounded .article-card{border-radius:16px}
.card-style-rounded .article-card-image img{border-radius:16px 16px 0 0}

/* Compact card style */
.card-style-compact .article-card-body{padding:14px}
.card-style-compact .article-card-body h2{font-size:1.1rem}
.card-style-compact .article-card-image img{height:160px}