:root{
  --ink:#0c0d0f;
  --ink-soft:#414651;
  --muted:#667085;
  --line:#e9eaeb;
  --paper:#ffffff;
  --pill-bg:#fafafa;
  --accent-from: var(--accent-from-inject, #FFC53D);
  --accent-via: var(--accent-via-inject, #FB6514);
  --accent-to: var(--accent-to-inject, #7A5AF8);
  --radius-lg:20px;
  --radius-md:12px;
  --radius-full:999px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3{margin:0;font-weight:600;letter-spacing:-0.02em}
p{margin:0}

.gradient-bar{
  height:6px;
  width:100%;
  background:linear-gradient(90deg,var(--accent-from),var(--accent-via),var(--accent-to));
}

.wrap{max-width:1216px;margin:0 auto;padding:0 24px}

/* ---- Nav ---- */
.nav{
  display:flex;align-items:center;justify-content:space-between;
  padding:20px 0;border-bottom:1px solid var(--line);
}
.brand{display:flex;align-items:center;gap:8px;font-weight:600;font-size:16px}
.brand .logo-ring{width:22px;height:22px;border-radius:50%;border:2.5px solid var(--ink)}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{font-size:14px;font-weight:500;color:var(--ink-soft);display:flex;align-items:center;gap:4px}
.nav-links a:hover{color:var(--ink)}
.nav-right{display:flex;align-items:center;gap:16px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-full);
  padding:10px 18px;font-size:14px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:transform .12s ease, opacity .12s ease;
}
.btn:active{transform:scale(.97)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{opacity:.88}
.btn-outline{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-outline:hover{background:var(--pill-bg)}
.avatar{width:36px;height:36px;border-radius:50%;object-fit:cover;background:#eee;border:1px solid var(--line)}
.burger{display:none;background:none;border:none;cursor:pointer}

/* ---- Hero ---- */
.hero{padding:80px 0 48px;text-align:center}
.hero h1{font-size:52px;line-height:1.08;max-width:760px;margin:0 auto 20px}
.hero p.subtitle{color:var(--muted);font-size:17px;max-width:520px;margin:0 auto 32px}
.subscribe-form{display:flex;gap:10px;max-width:420px;margin:0 auto}
.subscribe-form input[type=email]{
  flex:1;padding:11px 16px;border-radius:var(--radius-full);border:1px solid var(--line);
  font-size:14px;font-family:inherit;
}
.subscribe-form input[type=email]:focus{outline:2px solid var(--ink);outline-offset:1px}
.subscribe-note{font-size:13px;color:var(--muted);margin-top:12px;min-height:18px}

/* ---- Section heading ---- */
.section-head{display:flex;align-items:baseline;justify-content:space-between;margin:56px 0 24px}
.section-head h2{font-size:20px}
.section-head .filters{display:flex;gap:8px;flex-wrap:wrap}
.section-head .filters a{
  font-size:13px;font-weight:600;padding:6px 14px;border-radius:var(--radius-full);
  border:1px solid var(--line);color:var(--ink-soft);
}
.section-head .filters a.active{background:var(--ink);color:#fff;border-color:var(--ink)}

/* ---- Posts grid: featured left, list right (matches reference) ---- */
.posts-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:40px;padding-bottom:64px}
.posts-grid.single{grid-template-columns:1fr;max-width:720px;margin:0 auto;padding-bottom:64px}
.posts-grid.single .featured-post .thumb{aspect-ratio:16/9}
.featured-post .thumb{border-radius:var(--radius-lg);overflow:hidden;aspect-ratio:4/3;margin-bottom:20px;background:#f2f2f2}
.featured-post .thumb img{width:100%;height:100%;object-fit:cover}
.post-meta{font-size:13px;color:var(--muted);margin-bottom:8px}
.post-meta b{color:var(--ink)}
.featured-post h3{font-size:22px;margin-bottom:10px}
.featured-post .desc{color:var(--muted);font-size:15px;line-height:1.5;margin-bottom:14px}

.side-list{display:flex;flex-direction:column;gap:32px}
.side-item{display:grid;grid-template-columns:120px 1fr;gap:16px}
.side-item .thumb{border-radius:14px;overflow:hidden;aspect-ratio:1/1;background:#f2f2f2}
.side-item .thumb img{width:100%;height:100%;object-fit:cover}
.side-item h3{font-size:16px;line-height:1.3;margin-bottom:6px}
.side-item .desc{color:var(--muted);font-size:13.5px;line-height:1.45;margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

.tags{display:flex;gap:8px;flex-wrap:wrap}
.tag{
  font-size:12px;font-weight:600;padding:4px 12px;border-radius:var(--radius-full);
  border:1px solid var(--line);color:var(--ink-soft);
}
.tag.type-blog{background:#eef4ff;border-color:#d1e0ff;color:#3538cd}
.tag.type-article{background:#fff6ed;border-color:#ffead5;color:#b93815}
.tag.type-research{background:#ecfdf3;border-color:#abefc6;color:#067647}

/* ---- Article page ---- */
.article-head{padding:56px 0 32px;max-width:760px;margin:0 auto;text-align:center}
.article-head .kicker{margin-bottom:16px}
.article-head h1{font-size:38px;margin-bottom:16px}
.article-head .byline{color:var(--muted);font-size:14px}
.article-cover{max-width:920px;margin:0 auto 40px;border-radius:var(--radius-lg);overflow:hidden;aspect-ratio:16/8;background:#f2f2f2}
.article-cover img{width:100%;height:100%;object-fit:cover}
.article-body{max-width:720px;margin:0 auto 80px;font-size:17px;line-height:1.75;color:#232629}
.article-body h2{font-size:24px;margin:40px 0 14px}
.article-body p{margin-bottom:18px}
.back-link{max-width:720px;margin:24px auto 0;display:block;font-size:14px;font-weight:600;color:var(--muted)}
.back-link:hover{color:var(--ink)}

/* ---- Footer ---- */
.site-footer{border-top:1px solid var(--line);padding:32px 0;color:var(--muted);font-size:13px;
  display:flex;justify-content:space-between;align-items:center}

/* ---- Empty state ---- */
.empty{padding:80px 24px;text-align:center;color:var(--muted)}

@media (max-width: 880px){
  .nav-links{display:none}
  .burger{display:block}
  .hero h1{font-size:36px}
  .subscribe-form{flex-direction:column}
  .posts-grid{grid-template-columns:1fr;gap:32px}
  .side-item{grid-template-columns:96px 1fr}
  .article-head h1{font-size:28px}
}

/* ---- Admin ---- */
.admin-body{background:#fafafa;min-height:100vh}
.admin-shell{display:grid;grid-template-columns:240px 1fr;min-height:100vh}
.admin-sidebar{background:#0c0d0f;color:#fff;padding:24px 16px;display:flex;flex-direction:column}
.admin-sidebar .brand{color:#fff;margin-bottom:32px;padding:0 8px}
.admin-sidebar .logo-ring{border-color:#fff}
.admin-nav a{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;color:#c9cbd1;font-size:14px;font-weight:500;margin-bottom:2px}
.admin-nav a:hover{background:#1c1d20;color:#fff}
.admin-nav a.active{background:#fff;color:#0c0d0f}
.admin-sidebar .spacer{flex:1}
.admin-main{padding:32px 40px;max-width:1100px}
.admin-topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:28px}
.admin-topbar h1{font-size:24px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px;margin-bottom:20px}
.table{width:100%;border-collapse:collapse}
.table th{text-align:left;font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);padding:10px 12px;border-bottom:1px solid var(--line)}
.table td{padding:14px 12px;border-bottom:1px solid var(--line);font-size:14px;vertical-align:middle}
.table tr:last-child td{border-bottom:none}
.status-pill{font-size:12px;font-weight:600;padding:3px 10px;border-radius:var(--radius-full)}
.status-pill.published{background:#ecfdf3;color:#067647}
.status-pill.draft{background:#f2f4f7;color:#475467}
.form-group{margin-bottom:18px}
.form-group label{display:block;font-size:13px;font-weight:600;margin-bottom:6px}
.form-group .hint{font-size:12px;color:var(--muted);margin-top:6px}
input[type=text],input[type=email],input[type=password],input[type=url],select,textarea{
  width:100%;padding:10px 14px;border-radius:10px;border:1px solid var(--line);
  font-family:inherit;font-size:14px;color:var(--ink);
}
input:focus,select:focus,textarea:focus{outline:2px solid var(--ink);outline-offset:1px}
textarea{resize:vertical;min-height:120px}
.row{display:flex;gap:16px}
.row > *{flex:1}
.icon-btn{background:#fff;border:1px solid var(--line);border-radius:8px;padding:6px 10px;font-size:13px;cursor:pointer;color:var(--ink)}
.icon-btn:hover{background:var(--pill-bg)}
.link-danger{color:#d92d20;font-weight:600;font-size:13px}
.editor-shell{display:grid;grid-template-columns:1fr 320px;gap:24px;align-items:start}
.editor-main{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px}
.ai-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:20px;position:sticky;top:24px}
.ai-panel h3{font-size:15px;margin-bottom:14px}
.ai-panel .ai-actions{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.ai-panel .ai-actions button{width:100%;justify-content:flex-start;background:#fff;border:1px solid var(--line);color:var(--ink);font-weight:500}
.ai-panel .ai-actions button:hover{background:var(--pill-bg)}
.ai-status{font-size:12.5px;color:var(--muted);min-height:18px;margin-bottom:8px}
.toolbar{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:8px;border:1px solid var(--line);border-radius:10px 10px 0 0;border-bottom:none;padding:8px;background:#fafafa}
.toolbar button{background:#fff;border:1px solid var(--line);border-radius:6px;width:30px;height:30px;cursor:pointer;font-size:13px}
.toolbar button:hover{background:var(--pill-bg)}
#content-editable{
  border:1px solid var(--line);border-radius:0 0 10px 10px;padding:16px;min-height:360px;font-size:15px;line-height:1.7;
}
#content-editable:focus{outline:none;border-color:var(--ink)}
.login-shell{min-height:100vh;display:flex;align-items:center;justify-content:center;background:#fafafa}
.login-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:40px;width:100%;max-width:380px}
.login-card h1{font-size:22px;margin-bottom:6px;text-align:center}
.login-card p.sub{text-align:center;color:var(--muted);font-size:14px;margin-bottom:24px}
.alert{padding:12px 14px;border-radius:10px;font-size:13.5px;margin-bottom:16px}
.alert-error{background:#fef3f2;color:#b42318;border:1px solid #fda29b}
.alert-success{background:#ecfdf3;color:#067647;border:1px solid #abefc6}
.type-pill-choice{display:flex;gap:8px}
.type-pill-choice label{flex:1;border:1px solid var(--line);border-radius:10px;padding:10px;text-align:center;font-size:13px;font-weight:600;cursor:pointer}
.type-pill-choice input{display:none}
.type-pill-choice input:checked + span{color:var(--ink)}
.type-pill-choice label:has(input:checked){border-color:var(--ink);background:#fafafa}
.tag-input{display:flex;flex-wrap:wrap;gap:6px;border:1px solid var(--line);border-radius:10px;padding:8px;min-height:44px}
.tag-input .tag-chip{background:var(--pill-bg);border:1px solid var(--line);border-radius:var(--radius-full);padding:3px 10px;font-size:12px;display:flex;gap:6px;align-items:center}
.tag-input .tag-chip button{background:none;border:none;cursor:pointer;color:var(--muted);font-size:13px;line-height:1}
.tag-input input{border:none;flex:1;min-width:100px;padding:4px}
.tag-input input:focus{outline:none}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:24px}
.stat-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px}
.stat-card .num{font-size:26px;font-weight:700}
.stat-card .label{font-size:13px;color:var(--muted);margin-top:4px}
@media (max-width: 880px){
  .admin-shell{grid-template-columns:1fr}
  .admin-sidebar{display:none}
  .admin-main{padding:20px}
  .editor-shell{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
}