:root{
  --navy:#0a93d8;      /* 主蓝（与官网一致） */
  --navy-2:#0769ad;    /* 深蓝 */
  --navy-dd:#04456f;   /* 标题深蓝 */
  --cyan:#00d2e8;      /* 青色点缀（与官网一致） */
  --cyan-2:#7fe4ff;
  --ink:#16202e;
  --muted:#5f6c80;
  --line:#e3ebf4;
  --bg:#f2f7fc;
  --white:#fff;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--white);line-height:1.7;font-size:15px;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:1150px;margin:0 auto;padding:0 22px}
.btn{display:inline-block;padding:9px 22px;border-radius:40px;font-size:14px;font-weight:600;letter-spacing:.5px;transition:.25s;cursor:pointer;border:none}
.btn-primary{background:linear-gradient(120deg,#12c2e0,#0a93d8 55%,#0768ad);color:#fff;box-shadow:0 8px 20px rgba(10,147,216,.34)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(10,147,216,.46)}
.btn-light{background:#fff;color:#0a93d8;box-shadow:0 8px 22px rgba(4,56,95,.2)}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(4,56,95,.3)}
.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.55)}
.btn-ghost:hover{background:rgba(255,255,255,.12)}

/* ---------- header（与官网一致） ---------- */
header{position:sticky;top:0;z-index:100;background:rgba(8,112,179,.96);backdrop-filter:blur(8px);color:#fff;box-shadow:0 2px 14px rgba(4,56,95,.18)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:20px;letter-spacing:.5px}
.brand .logo{width:40px;height:40px;border-radius:9px;flex:0 0 40px;background:#fff;overflow:hidden;display:flex;align-items:center;justify-content:center}
.brand .logo img{width:100%;height:100%;object-fit:contain}
.brand small{display:block;font-size:11px;font-weight:400;letter-spacing:2px;color:#cfe6fb;margin-top:2px}
nav ul{display:flex;gap:30px;list-style:none}
nav a{font-size:15px;color:#eaf5ff;position:relative;padding:6px 0;transition:.2s}
nav a:hover,nav a.active{color:#fff}
nav a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--cyan);transition:.25s}
nav a:hover::after,nav a.active::after{width:100%}
.nav .btn{padding:8px 22px;font-size:14px}
.nav-toggle{display:none;background:none;border:none;color:#fff;font-size:26px;cursor:pointer}

/* ---------- page head ---------- */
.page-head{position:relative;color:#fff;padding:40px 0 34px;overflow:hidden;background:radial-gradient(1000px 460px at 80% 10%,rgba(255,255,255,.22),transparent 60%),linear-gradient(150deg,#0768a8 0%,#0a93d8 55%,#2ab0ee 100%)}
.page-head::after{content:"";position:absolute;inset:0;background:radial-gradient(900px 420px at 78% 8%,rgba(255,255,255,.2),transparent 62%)}
.page-head .container{position:relative;z-index:2}
.page-head h1{font-size:32px;font-weight:800;letter-spacing:1.5px;margin-bottom:8px;text-shadow:0 3px 12px rgba(4,56,95,.35)}
.page-head p{font-size:15px;color:#e8f5ff;max-width:780px;line-height:1.75}
.breadcrumb{font-size:13px;color:#dcefff;margin-bottom:10px}
.breadcrumb a{color:#eaf5ff;text-decoration:underline;text-underline-offset:3px}

/* ---------- section ---------- */
section{padding:38px 0}
.sec-head{margin-bottom:22px}
.sec-kicker{color:var(--cyan);font-weight:800;letter-spacing:2.5px;font-size:12px;text-transform:uppercase}
.sec-head h2{font-size:24px;margin:6px 0 6px;font-weight:800;color:var(--navy-dd)}
.sec-head p{color:var(--muted);font-size:14.5px}
.bg-gray{background:var(--bg)}

/* ---------- 热点新闻 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;display:flex;flex-direction:column;transition:.25s;box-shadow:0 5px 14px rgba(10,147,216,.06)}
.news-card:hover{transform:translateY(-5px);box-shadow:0 16px 34px rgba(10,147,216,.16);border-color:#c9e2f7}
.news-card .thumb{height:160px;background:linear-gradient(135deg,#0a93d8,#0768ad);display:flex;align-items:center;justify-content:center;color:#fff;font-size:36px}
.news-card .thumb img{width:100%;height:100%;object-fit:cover}
.news-card .body{padding:16px 18px 18px;flex:1;display:flex;flex-direction:column}
.news-card .date{font-size:12.5px;color:var(--navy);font-weight:700;letter-spacing:.5px}
.news-card h3{font-size:17px;color:var(--navy-dd);margin:8px 0 8px;line-height:1.4}
.news-card p{font-size:14px;color:var(--muted);line-height:1.65;flex:1;
  /* 全文存于 summary：列表卡片截断 3 行，完整内容进详情页阅读 */
  display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:3;overflow:hidden}
.news-card .more{margin-top:12px;font-size:13.5px;font-weight:700;color:var(--navy-2);display:inline-flex;align-items:center;gap:6px}
.news-card .more::after{content:"→";transition:.25s}
.news-card:hover .more{gap:12px;color:var(--cyan)}

/* ---------- 平台账户互联 ---------- */
.plat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:26px}
.plat{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;display:flex;align-items:center;gap:14px;transition:.25s;box-shadow:0 5px 14px rgba(10,147,216,.06)}
.plat:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(10,147,216,.16)}
.plat .ico{width:48px;height:48px;border-radius:12px;flex:0 0 48px;display:flex;align-items:center;justify-content:center;font-size:24px;background:linear-gradient(135deg,#12c2e0,#0a93d8 60%,#0768ad);color:#fff;box-shadow:0 5px 12px rgba(10,147,216,.3)}
.plat .info{flex:1;min-width:0}
.plat .info h4{font-size:16px;color:var(--navy-dd);font-weight:800}
.plat .info p{font-size:13px;color:var(--muted);margin-top:3px;word-break:break-word}
.plat .tag{display:inline-block;margin-top:6px;font-size:11px;font-weight:700;color:#fff;background:#94a1b5;border-radius:20px;padding:2px 10px}
.plat .tag.ok{background:linear-gradient(120deg,#12c2e0,#0a93d8)}
.plat a{display:block}
.plat a:hover h4{color:var(--navy)}

/* ---------- 宣传视频 ---------- */
.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.video-card{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.25s;box-shadow:0 5px 14px rgba(10,147,216,.06);display:flex;flex-direction:column}
.video-card:hover{transform:translateY(-5px);box-shadow:0 16px 34px rgba(10,147,216,.16);border-color:#c9e2f7}
.video-card .cover{position:relative;height:170px;background:linear-gradient(135deg,#0a93d8,#04456f);display:flex;align-items:center;justify-content:center;color:#fff}
.video-card .cover img{width:100%;height:100%;object-fit:cover}
.video-card .play{position:absolute;width:54px;height:54px;border-radius:50%;background:rgba(255,255,255,.92);display:flex;align-items:center;justify-content:center;color:var(--navy);font-size:22px;box-shadow:0 6px 16px rgba(0,0,0,.25)}
.video-card .badge{position:absolute;top:10px;left:10px;background:rgba(4,69,111,.86);color:#fff;font-size:12px;font-weight:700;padding:3px 11px;border-radius:20px}
.video-card .body{padding:15px 16px 17px;flex:1;display:flex;flex-direction:column;gap:10px}
.video-card h3{font-size:16px;color:var(--navy-dd);line-height:1.4}
.video-card .watch{align-self:flex-start;font-size:13.5px;font-weight:700;color:var(--navy-2);display:inline-flex;align-items:center;gap:6px}
.video-card .watch::after{content:"→";transition:.25s}
.video-card:hover .watch{gap:12px;color:var(--cyan)}

/* ---------- 空状态 ---------- */
.empty{background:#fff;border:1px dashed var(--line);border-radius:14px;padding:34px;text-align:center;color:var(--muted);font-size:14.5px}
.empty b{color:var(--navy-dd)}

/* ---------- 内容管理面板 ---------- */
.admin-wrap{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;box-shadow:0 10px 28px rgba(10,147,216,.1);display:none}
.admin-wrap.open{display:block}
.admin-tabs{display:flex;gap:10px;margin-bottom:16px;flex-wrap:wrap}
.admin-tabs button{border:none;background:var(--bg);color:var(--navy-dd);font-weight:700;font-size:14px;padding:8px 18px;border-radius:30px;cursor:pointer;transition:.2s}
.admin-tabs button.active{background:linear-gradient(120deg,#12c2e0,#0a93d8);color:#fff}
.a-form{display:none;gap:14px;flex-direction:column}
.a-form.active{display:flex}
.a-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.fld{display:flex;flex-direction:column;gap:6px}
.fld.full{grid-column:1/-1}
.fld label{font-size:14px;font-weight:700;color:#33445e}
.fld input,.fld select,.fld textarea{border:1.5px solid var(--line);border-radius:9px;padding:9px 12px;font-size:14.5px;color:var(--ink);background:#fbfdff;font-family:inherit;transition:.2s}
.fld input:focus,.fld select:focus,.fld textarea:focus{outline:none;border-color:var(--navy);background:#fff;box-shadow:0 0 0 3px rgba(10,147,216,.13)}
.fld textarea{resize:vertical;min-height:80px}
.a-foot{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.a-tip{font-size:13.5px;color:var(--muted)}
.a-msg{margin-top:12px;font-size:14px;border-radius:9px;padding:10px 14px;display:none}
.a-msg.ok{display:block;background:#eafaf0;border:1px solid #b9e6cd;color:#1c7a4a}
.a-msg.err{display:block;background:#fdecec;border:1px solid #f5c2c2;color:#a33a2e}
.admin-note{font-size:13px;color:#94a1b5;margin-top:14px;line-height:1.6}

/* ---------- 文章详情 ---------- */
.article{max-width:820px;margin:0 auto}
.article .cover{width:100%;height:340px;object-fit:cover;border-radius:16px;margin:8px 0 22px;background:linear-gradient(135deg,#0a93d8,#04456f)}
.article .meta{color:var(--navy);font-weight:700;font-size:14px;letter-spacing:.5px;margin-bottom:10px}
.article h1{font-size:30px;line-height:1.35;color:var(--navy-dd);margin-bottom:18px;font-weight:800}
.article .content{font-size:16px;color:#22303f;line-height:1.9}
.article .content p{margin-bottom:16px;white-space:pre-wrap}
/* 正文内嵌配图（site.js renderBody 输出的 img.fig） */
.article .content img{width:100%;height:auto;border-radius:14px;margin:18px 0 20px;background:var(--bg)}
/* 正文关键词反链接（site.js renderInline 输出的 a.inline-link，2026-10-20 新增）
   规范：每篇文章 2 个关键词锚文本指向 https://www.ycheb.com/，视觉上与正文区分但不喧宾夺主 */
.article .content a.inline-link{color:var(--navy-2);font-weight:700;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.article .content a.inline-link:hover{color:var(--navy)}
.article .back{display:inline-flex;align-items:center;gap:8px;margin-top:30px;font-weight:700;color:var(--navy-2);border:1.5px solid var(--line);padding:10px 20px;border-radius:30px;transition:.2s}
.article .back:hover{background:var(--bg);gap:12px}
.article .back::before{content:"←"}

/* ---------- 内容管理：发布台入口 ---------- */
.admin-entry{text-align:center;padding:34px 10px 26px}
.admin-entry p{color:var(--muted,#5f6c80);font-size:14.5px;margin-bottom:18px;line-height:1.7}
.admin-entry .btn{margin-bottom:6px}
.embed-tip{font-size:13.5px;color:var(--muted,#5f6c80);margin-top:14px;line-height:1.6}
.embed-tip.ok{color:#1c7a4a;font-weight:700}
@media(max-width:960px){.embed-frame{min-height:760px}}

/* ---------- footer ---------- */
footer{background:#04456f;color:#c6ddf1;padding:22px 0;font-size:13.5px;margin-top:20px}
.foot{display:flex;align-items:center;justify-content:space-between;gap:14px 36px;flex-wrap:wrap}
.foot .copyright{color:#cfe4f7;line-height:1.8}
.foot a{color:#e6f2ff;margin-left:14px}
.foot a:hover{color:var(--cyan-2)}

@media(max-width:960px){
  .news-grid,.video-grid{grid-template-columns:1fr}
  .a-grid{grid-template-columns:1fr}
  nav ul{display:none;position:absolute;top:72px;left:0;right:0;background:rgba(8,112,179,.98);flex-direction:column;gap:0;padding:8px 0}
  nav ul.open{display:flex}
  nav ul li{padding:12px 22px}
  nav a::after{display:none}
  .nav-toggle{display:block}
  .page-head h1{font-size:26px}
  .sec-head h2{font-size:21px}
  .article .cover{height:220px}
}