:root{--primary:#1a73e8;--primary-hover:#155ab6;--primary-light:#e8f0fe;--bg:#f4f7f9;--card:#fff;--text:#1f2937;--muted:#6b7280;--border:#e0e7ff;--radius:12px;--shadow:0 6px 20px rgba(26,115,232,.08)}
[data-theme='dark']{--bg:#121212;--card:#1e1e1e;--text:#e5e7eb;--muted:#9ca3af;--border:#2f2f2f;--primary:#60a5fa;--primary-hover:#93c5fd}
html{scroll-behavior:smooth}body{margin:0;font:16px/1.7 Inter,system-ui,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text)}
a{color:var(--primary);text-decoration:none}a:hover{color:var(--primary-hover)}
img{max-width:100%;height:auto;display:block}
.o365-container{max-width:1100px;margin:0 auto;padding:0 16px}
.hat-header{text-align:center;padding:16px 0}.hat-title{font-weight:800;font-size:30px;color:var(--primary);margin:8px 0}.hat-desc{color:var(--muted);font-size:15px}
.nav{position:sticky;top:0;z-index:999;background:var(--primary);box-shadow:var(--shadow)}.nav__container{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:8px 0}
.nav__toggle{display:none;color:#fff;background:rgba(255,255,255,.15);padding:8px 12px;border-radius:8px;font-size:22px}
.nav .menu{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin:0;padding:0}.nav .menu>li>a{color:#fff;padding:10px 14px;border-radius:8px;font-weight:600;font-size:15px;display:block}.nav .menu>li:hover>a{background:rgba(255,255,255,.18)}
.nav .menu .sub-menu{position:absolute;top:100%;left:0;min-width:220px;padding:6px 0;background:var(--primary-light);border:1px solid var(--border);border-radius:8px;box-shadow:0 8px 28px rgba(26,115,232,.12);opacity:0;visibility:hidden;transform:translateY(-8px);transition:.2s;z-index:9999}
.nav .menu li{position:relative}.nav .menu li:hover>.sub-menu{opacity:1;visibility:visible;transform:translateY(0)}
.nav .menu .sub-menu a{color:var(--primary);display:block;padding:10px 14px;border-bottom:1px solid rgba(26,115,232,.12);font-weight:500}.nav .menu .sub-menu li:last-child>a{border-bottom:none}
.nav .menu .sub-menu .sub-menu{top:0;left:100%;background:var(--card);border:1px solid var(--border);transform:translateX(-8px)}.nav .menu li:hover>.sub-menu li:hover>.sub-menu{transform:translateX(0)}
.nav__search .search-input{width:100%;padding:8px 12px;border:1px solid rgba(255,255,255,.35);border-radius:9999px;font-size:15px;background:rgba(255,255,255,.15);color:#fff}
.header-search .search-input{padding:10px 14px;border:1px solid var(--border);border-radius:9999px;background:var(--card);color:var(--text)}
.hat-livebox{position:absolute;background:var(--card);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow);margin-top:6px;min-width:320px;max-width:520px;display:none;z-index:1000}
.hat-live-results{list-style:none;margin:0;padding:6px 0}
.hat-live-results li{display:flex;justify-content:space-between;gap:12px;padding:10px 14px;border-bottom:1px solid var(--border)}
.hat-live-results li:last-child{border-bottom:none}
.hat-live-results a{color:var(--text);font-weight:600}
.hat-live-results a:hover{color:var(--primary)}
.hat-live-results .date{color:var(--muted);font-size:12px}
.hat-live-empty{padding:10px 14px;color:var(--muted)}
.breadcrumbs{padding:16px 0;color:var(--muted);font-size:14px}.breadcrumbs a{color:var(--primary)}
.blog-posts{margin:24px 0;background:var(--card);border-radius:16px;box-shadow:var(--shadow);overflow:hidden;padding:6px 0;counter-reset:postnum}
.post-outer{border-bottom:1px dashed #1a73e8;padding:16px 24px}.post-outer:last-child{border-bottom:none}
.post-line{display:grid;grid-template-columns:48px 1fr auto;align-items:center;gap:16px}.post-line::before{counter-increment:postnum;content:counter(postnum);background:var(--primary);color:#fff;font-weight:700;font-size:14px;width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 6px rgba(26,115,232,.3);flex-shrink:0}
.post-title{margin:0;font-size:15px;font-weight:700}.post-title a{color:var(--text)}.post-title a:hover{color:var(--primary);text-decoration:underline}
.post-timestamp{color:var(--muted);font-size:14px;white-space:nowrap}
.post-meta{color:var(--muted);margin-bottom:10px}.post-meta .dot{padding:0 8px}
.entry-content{font-size:17px;line-height:1.8}
.blog-pager,.loadmore-wrap{display:flex;align-items:center;justify-content:center;gap:16px;padding:32px 0;flex-wrap:wrap}
.btn-loadmore{background:var(--primary);color:#fff;border:none;border-radius:9999px;padding:10px 22px;cursor:pointer;font-weight:700}.btn-loadmore[disabled]{opacity:.6;cursor:not-allowed}
.hat-footer{background:#1a237e;color:#eee;font-size:15px;margin-top:40px;padding:40px 0 24px;border-top:3px solid var(--primary)}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:40px;margin-bottom:24px}
.footer-bottom{text-align:center;padding-top:24px;border-top:1px solid rgba(255,255,255,.2);font-size:14px;color:rgba(255,255,255,.7)}
.hat-table{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--border);border-radius:12px;overflow:hidden}
.hat-table th,.hat-table td{padding:10px 12px;border-bottom:1px solid var(--border)}.hat-table th{background:var(--primary-light);text-align:left}
#backTop{position:fixed;bottom:24px;right:24px;z-index:998;background:var(--primary);color:#fff;border:none;border-radius:50%;width:48px;height:48px;font-size:20px;cursor:pointer;box-shadow:0 8px 28px rgba(26,115,232,.12);transition:.25s;opacity:0;visibility:hidden;transform:translateY(20px)}#backTop.show{opacity:1;visibility:visible;transform:translateY(0)}#backTop:hover{background:var(--primary-hover);transform:translateY(-3px)}
#readProgress{position:fixed;top:0;left:0;height:3px;background:var(--primary);width:0;z-index:1001;transition:width .1s ease}
@media(max-width:768px){
  .nav__toggle{display:block}
  .nav .menu{display:none;width:100%;flex-direction:column;background:var(--primary-light);box-shadow:0 8px 28px rgba(26,115,232,.12);padding:16px;border-radius:0 0 12px 12px;gap:0}
  .nav .menu.is-open{display:flex}
  .nav .menu>.menu-item>a{color:var(--primary);width:100%;padding:12px;border-radius:8px}
  .nav .menu .sub-menu{position:static;max-height:0;overflow:hidden;border:none;box-shadow:none;background:transparent;opacity:1;visibility:visible;transform:none;padding:0;margin-left:16px}
  .nav .menu li.open>.sub-menu{max-height:1000px}
  .post-line{grid-template-columns:40px 1fr}.post-timestamp{display:none}
}