/* ============================================================
   AIKraft — Blog feed (/blog). Light shell. Long-form posts.
   ============================================================ */
.cat-compare  { color: var(--accent); background: var(--accent-soft); }
.cat-guide    { color: var(--green);  background: var(--green-soft); }
.cat-review   { color: var(--blue);   background: var(--blue-soft); }
.cat-opinion  { color: #8B5CF6;       background: rgba(139,92,246,.12); }
.cat-tutorial { color: var(--amber);  background: var(--amber-soft); }
.cat-business { color: #0EA5E9;       background: rgba(14,165,233,.12); }

.bf-top { padding:18px 0 0; }
.crumbs { display:flex; align-items:center; gap:8px; font-size:12px; color:var(--text-3); font-family:var(--font-mono); }
.crumbs a:hover { color:var(--text-2); } .crumbs .sep { opacity:.5; } .crumbs .cur { color:var(--text-2); }

.bf-hero { padding:22px 0 18px; }
.bf-hero h1 { font-size:32px; font-weight:600; letter-spacing:-.025em; margin:0; }
.bf-hero .lede { font-size:15px; color:var(--text-2); margin:8px 0 0; max-width:64ch; line-height:1.5; }

.cat-tag { display:inline-flex; align-items:center; font-size:10.5px; font-weight:600; text-transform:uppercase; letter-spacing:.04em; padding:3px 9px; border-radius:5px; }

/* featured */
.bf-featured { display:grid; grid-template-columns:1.1fr 1fr; border:1px solid var(--border); border-radius:16px; overflow:hidden; background:var(--bg-elev); margin-bottom:24px; cursor:pointer; transition:border .15s, box-shadow .15s; }
.bf-featured:hover { border-color:var(--border-strong); box-shadow:var(--shadow-md); }
.bf-feat-cover { aspect-ratio:16/11; background:var(--bg-elev-2); position:relative; background-image:radial-gradient(circle at 25% 40%, rgba(217,119,87,.12) 0%, transparent 50%), radial-gradient(circle at 80% 60%, rgba(16,163,127,.1) 0%, transparent 50%), repeating-linear-gradient(45deg, transparent 0 22px, rgba(127,127,127,.04) 22px 23px); }
.bf-feat-cover::after { content:attr(data-label); position:absolute; left:16px; bottom:14px; font-family:var(--font-mono); font-size:11px; color:var(--text-3); text-transform:uppercase; letter-spacing:.04em; }
.bf-feat-cover .pin { position:absolute; top:14px; left:14px; display:inline-flex; align-items:center; gap:6px; font-family:var(--font-mono); font-size:11px; color:var(--accent); background:var(--bg); padding:4px 10px; border-radius:999px; }
.bf-feat-body { padding:28px 30px; display:flex; flex-direction:column; }
.bf-feat-body .meta-top { display:flex; align-items:center; gap:10px; margin-bottom:14px; }
.bf-feat-body .meta-top .rt { font-family:var(--font-mono); font-size:12px; color:var(--text-3); }
.bf-feat-body h2 { font-size:26px; font-weight:600; letter-spacing:-.02em; line-height:1.18; margin:0; text-wrap:balance; }
.bf-feat-body .lead { font-size:15px; color:var(--text-2); line-height:1.55; margin:14px 0 0; }
.bf-feat-body .byline { margin-top:auto; padding-top:20px; display:flex; align-items:center; gap:11px; }
.avatar { width:36px; height:36px; border-radius:50%; display:inline-flex; align-items:center; justify-content:center; color:#fff; font-size:13px; font-weight:600; flex-shrink:0; }
.byline .who { font-size:13.5px; font-weight:500; }
.byline .who small { display:block; color:var(--text-3); font-family:var(--font-mono); font-size:11px; font-weight:400; margin-top:1px; }

/* category tabs */
.bf-tabs { display:flex; gap:6px; overflow-x:auto; scrollbar-width:none; margin-bottom:18px; }
.bf-tabs::-webkit-scrollbar { display:none; }
.bf-tab { white-space:nowrap; height:34px; padding:0 14px; border-radius:8px; background:var(--bg-elev); border:1px solid var(--border); font-size:13px; font-weight:500; color:var(--text-2); font-family:inherit; cursor:pointer; }
.bf-tab:hover { border-color:var(--border-strong); color:var(--text); }
.bf-tab.active { background:var(--accent); border-color:transparent; color:#fff; }

/* layout */
.bf-layout { display:grid; grid-template-columns:minmax(0,1fr) 300px; gap:32px; align-items:start; padding-bottom:56px; }

/* post cards grid */
.bf-grid { display:grid; grid-template-columns:1fr 1fr; gap:18px; }
.pcard { display:flex; flex-direction:column; background:var(--bg-elev); border:1px solid var(--border); border-radius:14px; overflow:hidden; cursor:pointer; transition:border .15s, transform .15s, box-shadow .15s; }
.pcard:hover { border-color:var(--border-strong); transform:translateY(-2px); box-shadow:var(--shadow-md); }
.pcard-cover { aspect-ratio:16/9; background:var(--bg-elev-2); position:relative; background-image:repeating-linear-gradient(45deg, transparent 0 20px, rgba(127,127,127,.04) 20px 21px); }
.pcard-cover .tag-abs { position:absolute; top:12px; left:12px; }
.pcard-body { padding:16px 18px; display:flex; flex-direction:column; gap:10px; flex:1; }
.pcard-body h3 { font-size:16.5px; font-weight:600; line-height:1.3; margin:0; letter-spacing:-.01em; }
.pcard-body .lead { font-size:13.5px; color:var(--text-2); line-height:1.5; flex:1; }
.pcard-byline { display:flex; align-items:center; gap:9px; padding-top:12px; border-top:1px solid var(--border); }
.pcard-byline .avatar { width:28px; height:28px; font-size:11px; }
.pcard-byline .who { font-size:12.5px; font-weight:500; }
.pcard-byline .meta { margin-left:auto; font-size:11.5px; color:var(--text-3); font-family:var(--font-mono); white-space:nowrap; }

/* pager */
.bf-pager { display:flex; justify-content:center; margin-top:22px; }
.bf-loadmore { display:inline-flex; align-items:center; gap:8px; height:38px; padding:0 18px; border-radius:10px; background:var(--bg-elev); border:1px solid var(--border); font-size:13px; font-weight:500; color:var(--text-2); cursor:pointer; }
.bf-loadmore:hover { border-color:var(--border-strong); color:var(--text); }

/* skeleton */
.bf-skel { display:grid; grid-template-columns:1fr 1fr; gap:18px; }
.skel-pcard { background:var(--bg-elev); border:1px solid var(--border); border-radius:14px; overflow:hidden; }
.skel-pcard .cv { aspect-ratio:16/9; }
.skel-pcard .bd { padding:16px 18px; display:flex; flex-direction:column; gap:10px; }

/* sidebar */
.bf-aside { position:sticky; top:76px; display:flex; flex-direction:column; gap:16px; }
.aside-card { background:var(--bg-elev); border:1px solid var(--border); border-radius:14px; padding:18px; }
.aside-card .ac-h { font-size:11px; font-weight:600; text-transform:uppercase; letter-spacing:.06em; color:var(--text-3); margin-bottom:14px; }
.pop-list { display:flex; flex-direction:column; gap:14px; }
.pop-item { display:flex; gap:11px; align-items:flex-start; }
.pop-item .pr { font-family:var(--font-mono); font-size:15px; font-weight:700; color:var(--accent); opacity:.5; line-height:1; }
.pop-item .pt { font-size:13px; font-weight:500; line-height:1.35; }
.pop-item .pt small { display:block; color:var(--text-3); font-family:var(--font-mono); font-size:10.5px; font-weight:400; margin-top:3px; }
.pop-item:hover .pt { color:var(--accent); }
.tagcloud { display:flex; flex-wrap:wrap; gap:7px; }
.tagcloud a { font-size:12px; padding:5px 11px; border-radius:999px; background:var(--bg-elev-2); border:1px solid var(--border); color:var(--text-2); font-family:var(--font-mono); }
.tagcloud a:hover { border-color:var(--accent-border); color:var(--accent); }
.sub-card { background:linear-gradient(135deg, var(--accent-soft), transparent 70%), var(--bg-elev); border-color:var(--accent-border); }
.sub-card p { font-size:12.5px; color:var(--text-2); margin:0 0 12px; line-height:1.5; }
.sub-form { display:flex; flex-direction:column; gap:8px; }
.sub-form input { height:38px; padding:0 12px; border-radius:9px; background:var(--bg); border:1px solid var(--border); font-size:13px; color:var(--text); font-family:inherit; outline:none; }
.sub-form input:focus { border-color:var(--accent-border); }
.sub-form .btn { justify-content:center; }
.sub-proof { font-size:11px; color:var(--text-3); font-family:var(--font-mono); text-align:center; margin-top:9px; }

@media (max-width:1024px){
  .bf-layout { grid-template-columns:1fr; }
  .bf-aside { position:static; }
  .bf-featured { grid-template-columns:1fr; }
  .bf-feat-cover { aspect-ratio:16/7; }
}
@media (max-width:680px){
  .bf-hero h1 { font-size:26px; }
  .bf-grid, .bf-skel { grid-template-columns:1fr; }
  .bf-feat-body h2 { font-size:21px; }
}