/* ========== 基础 ========== */
:root{
  --bg-base:#f7f9fc;
  --bg-white:#ffffff;
  --bg-soft:#eef3fa;
  --ink-900:#0b1f3a;
  --ink-700:#2c405c;
  --ink-500:#6b7d95;
  --line:#e3eaf3;
  --accent:#1e5eff;
  --accent-soft:#e8f0ff;
  --radius:16px;
  --shadow-sm:0 2px 10px rgba(11,31,58,.05);
  --shadow-md:0 12px 32px rgba(11,31,58,.08);
  --shadow-lg:0 24px 60px rgba(11,31,58,.10);
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;
  color:var(--ink-700);
  background:var(--bg-base);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit;}
img{max-width:100%;display:block;}

/* ========== 顶部 ========== */
.site-header{
  background:linear-gradient(180deg,#0d2440 0%,#0b1f3a 100%);
  border-bottom:1px solid rgba(255,255,255,.08);
  position:sticky;top:0;z-index:1000;
  box-shadow:0 2px 16px rgba(11,31,58,.18);
}
.header-inner{
  max-width:1240px;margin:0 auto;padding:0 28px;
  display:flex;align-items:center;height:76px;gap:36px;
}
.header-logo img{height:38px;}
.logo-text{
  font-size:21px;font-weight:800;color:#fff;
  letter-spacing:.5px;
}
.header-nav{display:flex;gap:4px;flex:1;}
.header-nav a{
  padding:9px 18px;border-radius:10px;color:rgba(255,255,255,.72);
  font-size:15px;font-weight:500;transition:.25s;
}
.header-nav a:hover{color:#fff;background:rgba(255,255,255,.08);}
.header-nav a.active{color:#fff;background:rgba(30,94,255,.22);font-weight:600;}
.header-actions{display:flex;align-items:center;gap:12px;position:relative;}
.header-qq{
  position:absolute;bottom:-24px;right:0;font-size:12px;
  color:rgba(255,255,255,.5);white-space:nowrap;
}
.btn{
  padding:10px 22px;border-radius:10px;font-size:14px;font-weight:600;
  transition:.25s;display:inline-block;cursor:pointer;border:none;
}
/* 顶部主按钮：在深色底上用亮蓝 */
.site-header .btn-primary{
  background:var(--accent);color:#fff;
  box-shadow:0 4px 14px rgba(30,94,255,.35);
}
.site-header .btn-primary:hover{background:#3d78ff;transform:translateY(-1px);}
/* 顶部次按钮：深色底上的描边 */
.site-header .btn-outline{
  background:transparent;border:1.5px solid rgba(255,255,255,.28);color:#fff;
}
.site-header .btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.08);}
.mobile-menu-btn{display:none;background:none;border:none;font-size:22px;cursor:pointer;color:#fff;}

/* ========== 首页 Hero ========== */
.hero{
  position:relative;height:100vh;min-height:640px;overflow:hidden;
  background:linear-gradient(160deg,#eef4ff 0%,#f7f9fc 45%,#ffffff 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    radial-gradient(circle at 18% 28%,rgba(30,94,255,.10),transparent 42%),
    radial-gradient(circle at 82% 68%,rgba(30,94,255,.08),transparent 46%);
  pointer-events:none;
}
.hero-grid{
  position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(var(--line) 1px,transparent 1px),
    linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:72px 72px;
  mask-image:radial-gradient(circle at 50% 40%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 50% 40%,#000 0%,transparent 72%);
  opacity:.55;
}
.hero-inner{
  position:relative;z-index:2;max-width:1240px;margin:0 auto;
  padding:0 28px;height:100%;display:flex;align-items:center;
}
.hero-content{max-width:680px;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:999px;background:#fff;
  border:1px solid var(--line);color:var(--accent);
  font-size:13px;font-weight:600;margin-bottom:28px;
  box-shadow:var(--shadow-sm);
}
.hero-badge .dot{
  width:7px;height:7px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 0 4px rgba(30,94,255,.15);
}
.hero h1{
  font-size:60px;line-height:1.15;color:var(--ink-900);
  font-weight:800;letter-spacing:-1px;margin-bottom:24px;
}
.hero h1 .accent{
  background:linear-gradient(120deg,#1e5eff,#4a8bff);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero p.lead{
  font-size:18px;color:var(--ink-500);margin-bottom:40px;
  max-width:560px;
}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;}
.btn-lg{padding:15px 34px;font-size:16px;border-radius:12px;}
.hero-stats{
  display:flex;gap:52px;margin-top:64px;flex-wrap:wrap;
}
.hero-stat .num{
  font-size:32px;font-weight:800;color:var(--ink-900);letter-spacing:-.5px;
}
.hero-stat .lbl{font-size:13px;color:var(--ink-500);margin-top:4px;}

/* ========== 通用区块 ========== */
.section{padding:120px 0;}
.section.soft{background:var(--bg-white);}
.section-inner{max-width:1240px;margin:0 auto;padding:0 28px;}
.section-head{text-align:center;max-width:680px;margin:0 auto 72px;}
.section-tag{
  display:inline-block;font-size:13px;font-weight:700;
  color:var(--accent);letter-spacing:2px;text-transform:uppercase;
  margin-bottom:16px;
}
.section-title{
  font-size:40px;font-weight:800;color:var(--ink-900);
  letter-spacing:-.5px;line-height:1.25;margin-bottom:18px;
}
.section-sub{color:var(--ink-500);font-size:16px;}

/* ========== 卡片网格 ========== */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}

.card{
  background:var(--bg-white);border:1px solid var(--line);
  border-radius:var(--radius);padding:38px 32px;
  transition:.35s cubic-bezier(.2,.8,.2,1);
  position:relative;overflow:hidden;
}
.card::after{
  content:"";position:absolute;left:0;top:0;height:3px;width:0;
  background:linear-gradient(90deg,var(--accent),#4a8bff);
  transition:width .4s ease;
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:#d4e0f2;}
.card:hover::after{width:100%;}
.card-icon{
  width:52px;height:52px;border-radius:14px;
  background:var(--accent-soft);color:var(--accent);
  display:flex;align-items:center;justify-content:center;
  font-size:22px;font-weight:700;margin-bottom:24px;
}
.card h3{font-size:20px;color:var(--ink-900);margin-bottom:12px;font-weight:700;}
.card p{color:var(--ink-500);font-size:15px;line-height:1.8;}

/* ========== 数据条 ========== */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;
}
.metric{
  background:var(--bg-white);padding:44px 28px;text-align:center;
  transition:.3s;
}
.metric:hover{background:var(--accent-soft);}
.metric .num{
  font-size:40px;font-weight:800;color:var(--ink-900);
  letter-spacing:-1px;line-height:1;
}
.metric .num small{font-size:20px;font-weight:700;color:var(--accent);}
.metric .lbl{margin-top:12px;color:var(--ink-500);font-size:14px;}

/* ========== 分栏图文 ========== */
.split{
  display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:center;
}
.split h2{
  font-size:36px;font-weight:800;color:var(--ink-900);
  line-height:1.28;letter-spacing:-.5px;margin-bottom:20px;
}
.split p{color:var(--ink-500);font-size:16px;margin-bottom:16px;}
.split-list{list-style:none;margin-top:28px;}
.split-list li{
  padding:14px 0;border-bottom:1px solid var(--line);
  display:flex;align-items:center;gap:14px;color:var(--ink-700);font-size:15px;
}
.split-list li::before{
  content:"";width:6px;height:6px;border-radius:50%;
  background:var(--accent);flex-shrink:0;
}
.split-visual{
  background:var(--bg-white);border:1px solid var(--line);
  border-radius:20px;padding:40px;box-shadow:var(--shadow-md);
}

/* ========== 平台情况面板 ========== */
.platform-panel{
  background:var(--ink-900);border-radius:24px;padding:64px;
  color:#fff;position:relative;overflow:hidden;
}
.platform-panel::before{
  content:"";position:absolute;right:-120px;top:-120px;
  width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(30,94,255,.45),transparent 68%);
}
.platform-panel h2{
  font-size:34px;font-weight:800;margin-bottom:16px;position:relative;
}
.platform-panel .desc{
  color:rgba(255,255,255,.72);max-width:560px;position:relative;margin-bottom:44px;
}
.platform-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:36px;position:relative;
}
.platform-grid .item .num{
  font-size:34px;font-weight:800;letter-spacing:-.5px;
}
.platform-grid .item .lbl{
  color:rgba(255,255,255,.6);font-size:13px;margin-top:8px;
}

/* ========== 新闻 ========== */
.news-card{
  background:var(--bg-white);border:1px solid var(--line);
  border-radius:var(--radius);padding:32px;
  transition:.3s;display:block;
}
.news-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px);border-color:#d4e0f2;}
.news-card .date{
  font-size:13px;color:var(--accent);font-weight:600;
  letter-spacing:.5px;margin-bottom:14px;
}
.news-card h3{
  font-size:19px;color:var(--ink-900);line-height:1.45;
  margin-bottom:12px;font-weight:700;
}
.news-card p{color:var(--ink-500);font-size:14px;line-height:1.75;}
.news-card .more{
  display:inline-block;margin-top:18px;color:var(--accent);
  font-size:14px;font-weight:600;
}
.news-card:hover .more{letter-spacing:.5px;}

/* ========== 底部 ========== */
.site-footer{
  background:var(--ink-900);color:rgba(255,255,255,.65);
  padding:72px 0 32px;margin-top:0;
}
.footer-inner{max-width:1240px;margin:0 auto;padding:0 28px;}
.footer-top{
  display:grid;grid-template-columns:2fr 1fr 1fr;gap:56px;
  padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand .name{
  font-size:22px;font-weight:800;color:#fff;margin-bottom:16px;
}
.footer-brand p{font-size:14px;line-height:1.9;max-width:360px;}
.footer-col h4{
  color:#fff;font-size:15px;font-weight:700;margin-bottom:18px;
}
.footer-col a{
  display:block;font-size:14px;padding:6px 0;
  color:rgba(255,255,255,.6);transition:.2s;
}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  padding-top:28px;display:flex;justify-content:space-between;
  align-items:center;font-size:13px;flex-wrap:wrap;gap:12px;
}
.admin-link{
  font-size:12px;color:rgba(255,255,255,.35);
  border:1px solid rgba(255,255,255,.15);
  padding:5px 14px;border-radius:999px;transition:.2s;
}
.admin-link:hover{color:#fff;border-color:rgba(255,255,255,.5);}

/* ========== 详情页 ========== */
.article-wrap{max-width:820px;margin:0 auto;}
.article-detail{
  background:var(--bg-white);border:1px solid var(--line);
  border-radius:var(--radius);padding:56px;box-shadow:var(--shadow-sm);
}
.article-detail h1{
  font-size:34px;color:var(--ink-900);line-height:1.35;
  margin-bottom:18px;font-weight:800;
}
.article-meta{color:var(--ink-500);font-size:14px;padding-bottom:28px;border-bottom:1px solid var(--line);}
.article-body{font-size:16px;color:var(--ink-700);line-height:2;margin-top:32px;}
.article-body p{margin-bottom:18px;}

/* ========== 分页 ========== */
.pagination{display:flex;justify-content:center;gap:10px;margin-top:56px;}
.pagination a,.pagination span{
  padding:10px 18px;border-radius:10px;background:#fff;
  border:1px solid var(--line);color:var(--ink-700);font-size:14px;transition:.2s;
}
.pagination a:hover{border-color:var(--accent);color:var(--accent);}
.pagination .current{background:var(--ink-900);color:#fff;border-color:var(--ink-900);}

/* ========== 动效 ========== */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .8s ease,transform .8s cubic-bezier(.2,.8,.2,1);}
.reveal.in{opacity:1;transform:none;}

/* ========== 响应式 ========== */
@media (max-width:1024px){
  .hero h1{font-size:44px;}
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr);}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .platform-grid{grid-template-columns:repeat(2,1fr);gap:28px;}
  .split{grid-template-columns:1fr;gap:40px;}
  .footer-top{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:768px){
  .header-inner{height:auto;flex-wrap:wrap;padding:14px 20px;gap:12px;}
  .header-nav{
    display:none;order:3;width:100%;flex-direction:column;
    gap:4px;padding:8px 0 12px;
  }
  .header-nav.show{display:flex;}
  .mobile-menu-btn{display:block;margin-left:auto;}
  .header-actions{order:2;}
  .header-qq{position:static;order:4;width:100%;text-align:center;margin-top:2px;}
  .btn{padding:8px 16px;font-size:13px;}
  .hero{height:auto;min-height:auto;padding:100px 0 80px;}
  .hero h1{font-size:34px;letter-spacing:-.5px;}
  .hero p.lead{font-size:16px;}
  .hero-stats{gap:32px;margin-top:44px;}
  .hero-stat .num{font-size:26px;}
  .section{padding:72px 0;}
  .section-head{margin-bottom:48px;}
  .section-title{font-size:28px;}
  .grid-3,.grid-4,.grid-2{grid-template-columns:1fr;}
  .metrics{grid-template-columns:1fr;}
  .platform-panel{padding:40px 28px;border-radius:18px;}
  .platform-panel h2{font-size:26px;}
  .platform-grid{grid-template-columns:1fr 1fr;gap:24px;}
  .footer-top{grid-template-columns:1fr;}
  .article-detail{padding:28px 22px;}
  .article-detail h1{font-size:24px;}
  .card{padding:30px 24px;}
}

/* ========== 文章正文排版 ========== */
.article-body{font-size:16px;color:var(--ink-700);line-height:2;margin-top:32px;}
.article-body p{margin-bottom:20px;}

.article-body h1,
.article-body h2,
.article-body h3,
.article-body h4{
  color:var(--ink-900);
  font-weight:700;
  line-height:1.4;
  margin:40px 0 18px;
}
.article-body h1{font-size:26px;}
.article-body h2{
  font-size:22px;
  padding-left:14px;
  border-left:4px solid var(--accent);
}
.article-body h3{font-size:19px;}
.article-body h4{font-size:17px;}

.article-body ul,
.article-body ol{
  margin:0 0 20px 22px;
  padding-left:12px;
  color:var(--ink-700);
}
.article-body li{margin-bottom:10px;line-height:1.9;}

.article-body blockquote{
  margin:24px 0;
  padding:16px 22px;
  background:var(--accent-soft);
  border-left:4px solid var(--accent);
  border-radius:8px;
  color:var(--ink-700);
  font-size:15px;
}

.article-body strong{color:var(--ink-900);font-weight:700;}
.article-body img{border-radius:12px;margin:24px 0;}
.article-body a{color:var(--accent);text-decoration:underline;}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
}
.article-body th,
.article-body td{
  border:1px solid var(--line);padding:12px 14px;text-align:left;
}
.article-body th{background:var(--bg-soft);color:var(--ink-900);font-weight:600;}

/* ========== 文章正文排版 ========== */
.article-body{
  font-size:16.5px;
  color:var(--ink-700);
  line-height:2;
  margin-top:32px;
}
.article-body p{
  margin:0 0 22px;
}
.article-body p:last-child{
  margin-bottom:0;
}

/* 小标题：带蓝色左边线，层次清晰 */
.article-body h1,
.article-body h2,
.article-body h3,
.article-body h4{
  color:var(--ink-900);
  font-weight:700;
  line-height:1.45;
  margin:44px 0 20px;
}
.article-body h1{font-size:27px;}
.article-body h2{
  font-size:22px;
  padding-left:14px;
  border-left:4px solid var(--accent);
}
.article-body h3{font-size:19px;}
.article-body h4{font-size:17px;}
.article-body h2:first-child,
.article-body h3:first-child{
  margin-top:0;
}

/* 列表 */
.article-body ul,
.article-body ol{
  margin:0 0 22px 22px;
  padding-left:12px;
}
.article-body li{
  margin-bottom:10px;
  line-height:1.9;
}

/* 引用块 */
.article-body blockquote{
  margin:26px 0;
  padding:18px 24px;
  background:var(--accent-soft);
  border-left:4px solid var(--accent);
  border-radius:8px;
  font-size:15.5px;
  color:var(--ink-700);
}

/* 强调 */
.article-body strong{color:var(--ink-900);font-weight:700;}
.article-body em{color:var(--accent);font-style:normal;font-weight:600;}

/* 图片 */
.article-body img{
  border-radius:12px;
  margin:26px 0;
  height:auto;
}

/* 链接 */
.article-body a{
  color:var(--accent);
  text-decoration:underline;
}

/* 表格 */
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:26px 0;
  font-size:15px;
}
.article-body th,
.article-body td{
  border:1px solid var(--line);
  padding:12px 14px;
  text-align:left;
}
.article-body th{
  background:var(--bg-soft);
  color:var(--ink-900);
  font-weight:600;
}