:root{--ink:#14161f;--muted:#6b7080;--line:#e8e9f0;--brand:#1a1f4e;--brand2:#3d4ea8;--accent:#c8a24a;--bg:#f6f7fb;--card:#fff;--shadow:0 6px 24px rgba(20,22,31,.07)}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);line-height:1.9;font-size:16px}
img{max-width:100%;display:block}
a{color:var(--brand2);text-decoration:none}
a:hover{color:var(--accent)}
.container{max-width:1160px;margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-9999px}
.skip:focus{left:16px;top:16px;background:#fff;padding:8px 12px;border:2px solid var(--brand2);z-index:999}
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:70px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--brand);font-size:17px}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;font-size:14px;letter-spacing:.5px}
.brand-text{white-space:nowrap}
.main-nav ul{display:flex;gap:6px;list-style:none}
.main-nav a{display:block;padding:8px 14px;border-radius:8px;color:var(--ink);font-size:15px;transition:.2s}
.main-nav a:hover{background:var(--bg);color:var(--brand)}
.main-nav a.active{background:var(--brand);color:#fff}
.menu-toggle{display:none;flex-direction:column;gap:5px;width:38px;height:38px;border:0;background:transparent;cursor:pointer;padding:9px}
.menu-toggle span{display:block;height:2px;background:var(--ink);border-radius:2px;transition:.25s}
.menu-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle.open span:nth-child(2){opacity:0}
.menu-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.page-hero{background:linear-gradient(135deg,#151a45,#2a3680 60%,#3d4ea8);color:#fff;padding:72px 0 56px;margin-bottom:32px}
.page-hero h1{font-size:34px;line-height:1.4;margin:14px 0 12px;font-weight:800;letter-spacing:-.3px}
.page-hero p{color:rgba(255,255,255,.82);font-size:15px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.7)}
.breadcrumb a{color:rgba(255,255,255,.85)}
.breadcrumb a:hover{color:#fff}
.crumbs-card{margin:-58px 0 28px}
.crumbs-card .breadcrumb{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 20px;color:var(--muted);box-shadow:var(--shadow)}
.crumbs-card .breadcrumb a{color:var(--brand2)}
main{min-height:60vh}
.article{max-width:820px;margin:0 auto;background:var(--card);border-radius:16px;padding:44px 48px;box-shadow:var(--shadow)}
.article h1{font-size:28px;line-height:1.5;margin-bottom:8px;color:var(--brand)}
.article .meta{color:var(--muted);font-size:14px;margin-bottom:28px;padding-bottom:20px;border-bottom:1px solid var(--line)}
.article h2{font-size:22px;margin:40px 0 16px;color:var(--brand);line-height:1.5;padding-left:14px;border-left:4px solid var(--accent)}
.article p{margin-bottom:18px;text-align:justify}
.article ol,.article ul{padding-left:28px;margin-bottom:18px}
.article li{margin-bottom:10px}
.article strong{color:var(--brand)}
.toc{background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:18px 22px;margin-bottom:34px}
.toc strong{display:block;color:var(--brand);margin-bottom:10px;font-size:16px}
.toc ol{padding-left:20px;margin:0}
.toc a{color:var(--ink)}
.related{margin-top:44px;padding-top:28px;border-top:1px solid var(--line)}
.related h3{font-size:19px;color:var(--brand);margin-bottom:18px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.related-grid a{display:block;background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:18px;transition:.2s}
.related-grid a:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--brand2)}
.related-grid strong{display:block;color:var(--brand);font-size:15px;margin-bottom:6px;line-height:1.5}
.related-grid p{color:var(--muted);font-size:13px;margin:0}
.section{padding:64px 0}
.section-head{text-align:center;margin-bottom:44px}
.section-head .kicker{color:var(--accent);font-weight:700;letter-spacing:2px;font-size:13px;text-transform:uppercase}
.section-head h2{font-size:30px;color:var(--brand);margin:10px 0 12px;line-height:1.4}
.section-head p{color:var(--muted);max-width:640px;margin:0 auto}
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:28px;box-shadow:var(--shadow);transition:.25s}
.card:hover{transform:translateY(-4px);border-color:var(--brand2)}
.card .ico{width:52px;height:52px;border-radius:13px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:18px}
.card h3{font-size:19px;color:var(--brand);margin-bottom:10px;line-height:1.5}
.card p{color:var(--muted);font-size:15px}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:32px}
.stat{text-align:center;background:#fff;border-radius:14px;padding:26px 18px;border:1px solid var(--line)}
.stat .num{font-size:34px;font-weight:800;color:var(--brand);line-height:1}
.stat .lab{color:var(--muted);font-size:14px;margin-top:8px}
.timeline{border-left:2px solid var(--line);padding-left:28px;margin-left:8px}
.timeline-item{position:relative;padding-bottom:28px}
.timeline-item::before{content:"";position:absolute;left:-36px;top:8px;width:14px;height:14px;border-radius:50%;background:var(--brand2);border:3px solid #fff;box-shadow:0 0 0 2px var(--line)}
.timeline-item .date{color:var(--accent);font-weight:700;font-size:14px}
.timeline-item h4{font-size:17px;color:var(--brand);margin:4px 0 6px}
.timeline-item p{color:var(--muted);font-size:15px}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 6px}
.tag{display:inline-block;background:var(--bg);color:var(--brand2);border:1px solid var(--line);border-radius:20px;padding:5px 14px;font-size:13px}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--brand);color:#fff;padding:12px 26px;border-radius:10px;font-weight:600;transition:.2s;border:0;cursor:pointer;font-size:15px}
.btn:hover{background:var(--brand2);color:#fff}
.btn-outline{background:transparent;color:var(--brand);border:2px solid var(--brand)}
.btn-outline:hover{background:var(--brand);color:#fff}
.cta{background:linear-gradient(135deg,#151a45,#3d4ea8);color:#fff;border-radius:20px;padding:56px 48px;text-align:center}
.cta h2{font-size:28px;margin-bottom:14px}
.cta p{color:rgba(255,255,255,.85);max-width:620px;margin:0 auto 26px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px}
.site-footer{background:#0f1226;color:#c5c8d6;padding:56px 0 28px;margin-top:64px}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:14px}
.site-footer ul{list-style:none}
.site-footer li{margin-bottom:8px}
.site-footer a{color:#a4a8b8}
.site-footer a:hover{color:#fff}
.site-footer p{font-size:14px;margin-bottom:6px}
.copyright{margin-top:36px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);font-size:13px;color:#7a7e90;text-align:center}
.back-top{position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:50%;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:.3s;z-index:99;box-shadow:var(--shadow);font-size:18px}
.back-top.show{opacity:1;pointer-events:auto}
.archive-list{display:grid;gap:14px}
.archive-item{display:flex;gap:20px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px 24px;transition:.2s}
.archive-item:hover{border-color:var(--brand2);box-shadow:var(--shadow);transform:translateX(4px)}
.archive-item .d{color:var(--accent);font-weight:700;font-size:14px;white-space:nowrap;min-width:88px;padding-top:2px}
.archive-item .t{flex:1}
.archive-item .t a{color:var(--brand);font-size:17px;line-height:1.5;font-weight:600}
.archive-item .t a:hover{color:var(--brand2)}
.archive-item .t p{color:var(--muted);font-size:14px;margin-top:6px}
.pager{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:8px;margin:40px 0 8px}
.pager a,.pager span{display:inline-flex;align-items:center;justify-content:center;min-width:40px;height:40px;padding:0 12px;border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--brand);font-size:14px;transition:.2s}
.pager a:hover{border-color:var(--brand2);color:var(--brand2)}
.pager .current{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:700;pointer-events:none}
.pager .disabled{color:#b8bcc8;pointer-events:none;border-color:#f0f1f5;background:#fafbfd}
@media(max-width:1080px){
.grid-4{grid-template-columns:repeat(2,1fr)}
.stat-grid{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:860px){
.container{padding:0 16px}
.header-inner{height:60px}
.brand-text{font-size:14px}
.menu-toggle{display:flex}
.main-nav{position:fixed;top:60px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);max-height:0;overflow:hidden;transition:.3s}
.main-nav.open{max-height:420px}
.main-nav ul{flex-direction:column;padding:12px 16px;gap:2px}
.main-nav a{padding:12px 14px;border-radius:8px}
.page-hero{padding:48px 0 40px}
.page-hero h1{font-size:24px}
.article{padding:26px 20px;border-radius:12px}
.article h1{font-size:22px}
.article h2{font-size:19px;padding-left:11px}
.related-grid{grid-template-columns:1fr}
.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
.section{padding:44px 0}
.section-head h2{font-size:23px}
.stat{padding:20px 12px}
.stat .num{font-size:27px}
.archive-item{flex-direction:column;gap:8px;padding:18px}
.archive-item .d{min-width:auto}
.cta{padding:38px 24px}
.cta h2{font-size:22px}
.footer-grid{grid-template-columns:1fr;gap:28px}
.site-footer{padding:44px 0 24px}
.crumbs-card{margin-top:-44px}
}
@media print{
.site-header,.site-footer,.menu-toggle,.back-top,.related{display:none}
body{background:#fff}
.article{box-shadow:none;padding:0}
}

/* 详情页新增样式 */
.back-to-list { margin-bottom: 1.5rem; }
.back-to-list a { color: #1a1f4e; text-decoration: none; font-size: 0.95rem; }
.back-to-list a:hover { color: #c0392b; }

.prev-next { display: flex; justify-content: space-between; gap: 1rem; margin: 2rem 0; padding: 1rem 0; border-top: 1px solid #e5e5e5; border-bottom: 1px solid #e5e5e5; }
.prev-next a { color: #1a1f4e; text-decoration: none; font-size: 0.95rem; flex: 1; }
.prev-next a:hover { color: #c0392b; }
.prev-next .prev { text-align: left; }
.prev-next .next { text-align: right; }

.related { margin: 2rem 0; }
.related h3 { font-size: 1.2rem; margin-bottom: 1rem; }
.related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1rem; }
.related-grid a { display: block; padding: 1rem; background: #f8f9fa; border-radius: 6px; text-decoration: none; color: inherit; transition: background 0.2s; }
.related-grid a:hover { background: #eef0f7; }
.related-grid strong { display: block; font-size: 0.95rem; margin-bottom: 0.5rem; color: #1a1f4e; }
.related-grid p { font-size: 0.8rem; color: #888; margin: 0; }