/* ==========================================================================
   官网模板母版 · 样式
   适配协会 / 机构 / 企业官网；配色由 --brand 控制，各站换色即换风格
   ========================================================================== */

:root{
  --brand:#0b5f9e;
  --brand-d:#08487a;
  --brand-l:#e8f1f9;
  --text:#1f2733;
  --text-2:#5a6675;
  --line:#e6ebf1;
  --bg:#f5f7fa;
  --white:#fff;
  --radius:10px;
  --wrap:1180px;
  --shadow:0 6px 24px rgba(16,32,56,.08);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--white);color:var(--text);
  font:15px/1.75 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;border:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px}

/* ------------------------------ 头部 / 导航 ------------------------------ */
.hd{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:saturate(1.6) blur(8px)}
.hd-in{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:9px;background:var(--brand);color:#fff;font-weight:700;font-size:15px;letter-spacing:.5px}
.brand-logo{height:40px;width:auto}
.brand-txt{display:flex;flex-direction:column;line-height:1.25}
.brand-txt b{font-size:17px;font-weight:700}
.brand-txt i{font-style:normal;font-size:12px;color:var(--text-2)}

.nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-item{position:relative}
.nav-a{display:inline-flex;align-items:center;gap:4px;padding:0 14px;height:68px;font-size:15px;color:var(--text);white-space:nowrap;border-bottom:2px solid transparent;transition:.15s}
.nav-a:hover{color:var(--brand)}
.nav-a.on{color:var(--brand);font-weight:600;border-bottom-color:var(--brand)}
.caret{font-style:normal;font-size:11px;color:var(--text-2);transition:.2s}
.nav-drop{
  position:absolute;left:50%;top:100%;transform:translateX(-50%) translateY(6px);
  min-width:168px;padding:6px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow);
  opacity:0;visibility:hidden;transition:.18s;
}
.nav-item:hover .nav-drop{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.nav-item:hover .caret{transform:rotate(180deg)}
.nav-drop a{display:block;padding:9px 12px;border-radius:6px;font-size:14px;color:var(--text-2);white-space:nowrap}
.nav-drop a:hover{background:var(--brand-l);color:var(--brand)}
.nav-toggle{display:none;margin-left:auto;padding:6px 12px;font-size:20px;background:none;border:1px solid var(--line);border-radius:8px;cursor:pointer}

/* ------------------------------ 头图 ------------------------------ */
.hero{position:relative;padding:74px 0 66px;background:linear-gradient(135deg,var(--brand) 0%,var(--brand-d) 100%);color:#fff;overflow:hidden}
.hero-img{background-size:cover;background-position:center}
.hero-mask{position:absolute;inset:0;background:linear-gradient(135deg,rgba(8,40,70,.82),rgba(8,40,70,.6))}
.hero-in{position:relative;z-index:2}
.hero h1{margin:0 0 8px;font-size:34px;font-weight:700;letter-spacing:.5px}
.hero-sub{margin:0 0 12px;font-size:17px;opacity:.92}
.hero-desc{margin:0 0 22px;max-width:760px;font-size:15px;line-height:1.9;opacity:.86}
.hero-meta{display:flex;flex-wrap:wrap;gap:26px;font-size:14px;opacity:.9}
.hero-meta b{font-size:22px;font-weight:700;margin-right:4px}

/* ------------------------------ 广告条 ------------------------------ */
.adv-bar{background:var(--bg);padding:16px 0}
.adv-in{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.adv-item img{max-height:76px;width:auto;border-radius:8px}

/* ------------------------------ 通用区块 ------------------------------ */
.section{padding:56px 0}
.section-alt{background:var(--bg)}
.sec-head{display:flex;align-items:baseline;gap:14px;margin-bottom:26px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.sec-head h2{position:relative;padding-left:14px;font-size:22px;font-weight:700}
.sec-head h2::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:20px;border-radius:2px;background:var(--brand)}
.sec-en{font-size:13px;color:var(--text-2);text-transform:uppercase;letter-spacing:1px}
.sec-more{margin-left:auto;font-size:14px;color:var(--brand)}
.sec-more:hover{text-decoration:underline}
.empty{padding:40px 0;text-align:center;color:var(--text-2)}

/* 面包屑 */
.crumb{background:var(--bg);border-bottom:1px solid var(--line);font-size:13px;color:var(--text-2)}
.crumb .wrap{display:flex;flex-wrap:wrap;gap:6px;align-items:center;height:46px}
.crumb a:hover{color:var(--brand)}
.crumb-sep{color:#c3ccd8}
.crumb b{color:var(--text);font-weight:600}

/* ------------------------------ 新闻卡片 ------------------------------ */
.news-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:18px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.18s}
.news-card:hover{box-shadow:var(--shadow);transform:translateY(-2px);border-color:#d6e0ec}
.news-card a{display:flex;gap:14px;padding:14px}
.news-thumb{flex:0 0 108px;height:78px;border-radius:8px;overflow:hidden;background:var(--bg)}
.news-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.news-body{display:flex;flex-direction:column;min-width:0;flex:1}
.news-t{font-size:15px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-s{margin-top:6px;font-style:normal;font-size:13px;color:var(--text-2);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-d{margin-top:auto;padding-top:8px;font-style:normal;font-size:12px;color:#9aa5b4}

/* 列表行 */
.news-list{border-top:1px solid var(--line)}
.news-row{border-bottom:1px solid var(--line)}
.news-row a{display:flex;gap:18px;padding:20px 0;align-items:flex-start}
.news-row a:hover .row-body b{color:var(--brand)}
.row-thumb{flex:0 0 168px;height:106px;border-radius:8px;overflow:hidden;background:var(--bg)}
.row-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.row-body{display:flex;flex-direction:column;min-width:0;flex:1}
.row-body b{font-size:17px;font-weight:600;line-height:1.55;transition:.15s}
.row-body i{margin-top:8px;font-style:normal;font-size:13px;color:var(--text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.row-body em{margin-top:auto;padding-top:10px;font-style:normal;font-size:12px;color:#9aa5b4}
.row-cat{display:inline-block;margin-right:10px;padding:1px 8px;border-radius:4px;background:var(--brand-l);color:var(--brand);font-size:12px}

/* 分类标签 */
.chip-bar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.chip{padding:5px 14px;border:1px solid var(--line);border-radius:999px;font-size:13px;color:var(--text-2);transition:.15s}
.chip:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-l)}

/* 分页 */
.pager{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:34px}
.pg{min-width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;padding:0 12px;border:1px solid var(--line);border-radius:8px;font-size:14px;color:var(--text-2);background:#fff}
.pg:hover{border-color:var(--brand);color:var(--brand)}
.pg.on{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600}

/* ------------------------------ 图集 ------------------------------ */
.photo-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
.photo-item{position:relative;border-radius:var(--radius);overflow:hidden;background:var(--bg)}
.photo-item img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block;transition:.3s}
.photo-item:hover img{transform:scale(1.05)}
.photo-item span{position:absolute;left:0;right:0;bottom:0;padding:20px 12px 10px;color:#fff;font-size:13px;background:linear-gradient(transparent,rgba(0,0,0,.65))}

/* ------------------------------ 文章详情 ------------------------------ */
.art-wrap{max-width:860px}
.art-t{margin-bottom:16px;font-size:27px;font-weight:700;line-height:1.45}
.art-meta{display:flex;flex-wrap:wrap;gap:16px;padding-bottom:16px;margin-bottom:24px;border-bottom:1px solid var(--line);font-size:13px;color:var(--text-2)}
.art-cat{padding:1px 9px;border-radius:4px;background:var(--brand-l);color:var(--brand)}
.art-cover{margin:0 0 22px;text-align:center}
.art-cover img{border-radius:var(--radius)}
.art-body{font-size:16px;line-height:2;color:#2b3648;word-wrap:break-word}
.art-body p{margin:0 0 18px}
.art-body img{margin:12px auto;display:block;border-radius:8px}
.art-body h2,.art-body h3{margin:28px 0 14px;font-weight:700;line-height:1.5}
.art-body h2{font-size:20px}
.art-body h3{font-size:17px}
.art-body ul,.art-body ol{margin:0 0 18px;padding-left:24px;list-style:disc}
.art-body ol{list-style:decimal}
.art-body li{margin:6px 0}
.art-body a{color:var(--brand);text-decoration:underline}
.art-body table{width:100%;border-collapse:collapse;margin:0 0 18px}
.art-body td,.art-body th{border:1px solid var(--line);padding:9px 12px}
.art-body blockquote{margin:0 0 18px;padding:12px 18px;background:var(--bg);border-left:3px solid var(--brand);color:var(--text-2)}
.art-nav{display:flex;flex-direction:column;gap:10px;margin-top:38px;padding-top:22px;border-top:1px solid var(--line);font-size:14px}
.art-nav a{color:var(--text-2)}
.art-nav a:hover{color:var(--brand)}
.art-nav .disabled{color:#b6c0cc}

/* ------------------------------ 页脚 ------------------------------ */
.ft{margin-top:0;background:#16202e;color:#c3cddb}
.ft-in{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:34px;padding:44px 20px}
.ft-col h4{margin-bottom:14px;color:#fff;font-size:15px;font-weight:600}
.ft-desc{font-size:13px;line-height:1.9;color:#95a3b6}
.ft-list li,.ft-links li{margin:7px 0;font-size:13px;line-height:1.7;color:#95a3b6}
.ft-links a:hover{color:#fff}
.ft-bar{border-top:1px solid rgba(255,255,255,.08);font-size:12.5px;color:#7e8c9f}
.ft-bar .wrap{display:flex;flex-wrap:wrap;gap:10px 22px;align-items:center;justify-content:center;padding:16px 20px;text-align:center}

/* ------------------------------ 响应式（§16 统一断点 820/480） ------------------------------ */
@media (max-width:820px){
  .ft-in{grid-template-columns:1fr;gap:24px}
  .news-grid{grid-template-columns:1fr}
  .nav-a,.nav-drop a{white-space:normal}
  .hd-in{height:60px;gap:12px}
  .nav{
    position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow);
    max-height:0;overflow:hidden;transition:max-height .25s;
  }
  .nav.open{max-height:80vh;overflow:auto}
  .nav-a{height:auto;padding:13px 20px;border-bottom:1px solid var(--line)}
  .nav-item{position:static}
  .nav-drop{position:static;transform:none;opacity:1;visibility:visible;box-shadow:none;border:0;border-radius:0;padding:0;background:var(--bg)}
  .nav-drop a{padding:11px 34px;border-bottom:1px solid var(--line)}
  .nav-toggle{display:inline-block}
  .hero{padding:48px 0 42px}
  .hero h1{font-size:25px}
  .news-row a{flex-direction:column;gap:12px}
  .row-thumb{flex:none;width:100%;height:auto;aspect-ratio:16/9}
  .art-t{font-size:21px}
}
@media (max-width:480px){
  .hero{padding:36px 0 32px}
  .hero h1{font-size:21px}
  .hero-sub{font-size:15px}
  .hero-meta{gap:14px}
  .hero-meta b{font-size:18px}
  .art-t{font-size:19px}
  input,textarea,select,button{font-size:14px}
}