/* 博特AI · 新闻列表/详情 */
:root{--bg:#070b14;--panel:#0e1626;--panel-2:#101a2e;--line:rgba(148,180,220,.14);--line-soft:rgba(148,180,220,.08);
  --ink:#eaf0fb;--ink-dim:#a9b6cd;--ink-mute:#6d7c99;--accent:#2fe0d0;--accent-2:#4aa3ff;--gold:#e8b45c;
  --r-lg:18px;--r-md:14px;--shadow:0 24px 60px -28px rgba(0,0,0,.75);--mono:"SFMono-Regular","Consolas",monospace}
*{box-sizing:border-box;margin:0;padding:0}
body{background:#070b14 radial-gradient(900px 620px at 82% -8%,rgba(74,163,255,.14),transparent 60%);
  color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.nav{position:sticky;top:0;z-index:50;background:rgba(7,11,20,.85);backdrop-filter:blur(14px);border-bottom:1px solid var(--line-soft)}
.nav-in{max-width:980px;margin:0 auto;padding:15px 22px;display:flex;align-items:center;gap:13px}
.nav-in img.lg{width:36px;height:36px;border-radius:10px}
.nav-in .tt b{font-size:18px;display:block}
.nav-in .tt span{color:var(--ink-mute);font-size:12px;letter-spacing:1px}
.nav-in .back{margin-left:auto;color:var(--accent);font-size:14px;font-weight:600;border:1px solid var(--line);padding:8px 14px;border-radius:9px}
.nav-in .back:hover{border-color:var(--accent)}
.wrap{max-width:980px;margin:0 auto;padding:42px 22px 90px}
.breadcrumb{color:var(--ink-mute);font-size:13px;margin-bottom:20px}
.breadcrumb a:hover{color:var(--accent)}
h1{font-size:30px;line-height:1.3;font-weight:800}
.pg-meta{margin-top:14px;color:var(--ink-mute);font-size:14px;display:flex;gap:16px;flex-wrap:wrap;align-items:center}
.pg-meta .cat{color:var(--accent);border:1px solid rgba(47,224,208,.35);border-radius:999px;padding:2px 12px;font-size:12px}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:28px}
.card{background:var(--panel);border:1px solid var(--line-soft);border-radius:var(--r-lg);overflow:hidden;transition:.3s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-5px);border-color:rgba(74,163,255,.5);box-shadow:var(--shadow)}
.thumb{height:170px;position:relative;display:grid;place-items:center;overflow:hidden}
.thumb .tag{position:absolute;top:12px;left:12px;background:rgba(7,11,20,.82);color:var(--accent);border:1px solid var(--line);font-size:11px;padding:3px 11px;border-radius:999px;z-index:3}
.thumb .gp{font-size:60px;font-weight:800;color:rgba(148,180,220,.3)}
.thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:2}
.bd{padding:20px 22px;display:flex;flex-direction:column;flex:1}
.bd .dt{font-family:var(--mono);font-size:12px;color:var(--ink-mute);letter-spacing:.5px}
.bd h3{font-size:19px;line-height:1.4;margin-top:8px}
.bd p{font-size:14px;color:var(--ink-mute);margin:10px 0 0;flex:1}
.bd .more{margin-top:14px;color:var(--accent);font-size:14px;font-weight:600}
.article .lead{font-size:17px;color:var(--ink-dim);margin-top:22px;border-left:3px solid var(--accent);padding-left:16px}
.article p{font-size:16px;color:#c6d0e1;margin-top:18px;max-width:760px}
.article .back{display:inline-block;margin-top:34px;color:var(--accent);font-weight:600;font-size:15px}
@media (max-width:700px){.grid{grid-template-columns:1fr}}