:root{color-scheme:dark;--bg:#07111e;--panel:#0d1b2a;--line:#274058;--text:#eff7ff;--muted:#9fb4c7;--accent:#4dc4ff;--accent2:#8fe0ff}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:linear-gradient(180deg,#06101c,#0b1725 50%,#07111e);color:var(--text);font:16px/1.75 system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}a{color:var(--accent2)}header,main,footer{width:min(1080px,calc(100% - 32px));margin:auto}header{display:flex;align-items:center;justify-content:space-between;padding:24px 0;border-bottom:1px solid var(--line)}.brand{font-weight:800;font-size:20px;text-decoration:none;color:#fff}.nav{display:flex;gap:18px;flex-wrap:wrap}.nav a{text-decoration:none;color:var(--muted)}.hero{padding:64px 0 36px}.eyebrow{color:var(--accent);font-size:13px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}.hero h1,article h1{font-size:clamp(34px,6vw,62px);line-height:1.12;margin:.25em 0}.hero p,.lead{font-size:19px;color:#c8d7e4;max-width:760px}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;padding:18px 0 64px}.card{display:block;background:rgba(13,27,42,.88);border:1px solid var(--line);border-radius:18px;padding:24px;text-decoration:none;transition:.2s transform,.2s border-color}.card:hover{transform:translateY(-3px);border-color:var(--accent)}.card time{color:var(--muted);font-size:13px}.card h2{color:#fff;font-size:21px;line-height:1.4;margin:10px 0}.card p{color:var(--muted);margin:0}.crumbs{padding-top:28px;color:var(--muted);font-size:14px}.crumbs a{text-decoration:none}.article{max-width:820px;padding-bottom:64px}.article-meta{display:flex;gap:14px;flex-wrap:wrap;color:var(--muted);border-bottom:1px solid var(--line);padding-bottom:22px}.article h2{margin-top:42px;font-size:26px}.article p{color:#d3e0eb}.keywords{display:flex;gap:9px;flex-wrap:wrap;margin:26px 0}.keywords span{border:1px solid var(--line);border-radius:999px;padding:5px 12px;color:var(--muted);font-size:13px}.related{margin-top:44px;padding:24px;background:var(--panel);border:1px solid var(--line);border-radius:18px}.related ul{margin-bottom:0}.source{font-size:14px;color:var(--muted)}footer{border-top:1px solid var(--line);padding:28px 0 50px;color:var(--muted);display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap}footer a{margin-right:14px}@media(max-width:780px){.grid{grid-template-columns:1fr}.nav{gap:10px}.hero{padding-top:44px}.article h1{font-size:38px}}