:root{
  --primary:#1f3a5f; --primary-dark:#152a45; --green:#43803e; --gold:#b8954f; --gold-light:#e9dcc0;
  --brand-font:"Noto Serif",Georgia,"Times New Roman",serif;
  --bg:#f8f6f1; --card:#fff; --text:#2e2a28; --muted:#6f6660; --line:#ece3d8;
  --radius:14px; --shadow:0 2px 10px rgba(20,36,59,.07);
  --font:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.65;font-size:17px}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
.container{max-width:1160px;margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px}.skip:focus{left:10px;top:10px;background:#fff;padding:8px;z-index:99}

/* Header */
.topbar{background:var(--primary-dark);color:var(--gold-light);font-size:14px}
.topbar .container{display:flex;justify-content:space-between;gap:12px;padding-top:6px;padding-bottom:6px}
.site-header{background:#fff;border-bottom:3px solid var(--gold);position:sticky;top:0;z-index:20;box-shadow:var(--shadow)}
.header-row{display:flex;align-items:center;gap:20px;padding-top:12px;padding-bottom:12px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text)}
.brand:hover{text-decoration:none}
.brand img{width:58px;height:58px}
.brand-name{font-family:var(--brand-font);font-weight:700;font-size:28px;letter-spacing:.2px;color:var(--primary);line-height:1}
.brand-tag{display:block;font-size:11.5px;font-weight:700;color:var(--gold);letter-spacing:2.4px;text-transform:uppercase;margin-top:4px}
.search{margin-left:auto;display:flex;position:relative}
.search input{width:250px;padding:9px 40px 9px 14px;border:1.5px solid var(--line);border-radius:999px;font:inherit;font-size:15px;background:var(--bg)}
.search input:focus{outline:none;border-color:var(--primary);background:#fff}
.search button{position:absolute;right:4px;top:50%;transform:translateY(-50%);border:0;background:var(--primary);color:#fff;width:32px;height:32px;border-radius:50%;cursor:pointer;display:grid;place-items:center}
.nav-toggle{display:none;border:1.5px solid var(--line);background:#fff;border-radius:10px;padding:7px 10px;font:inherit;cursor:pointer}
.main-nav{background:var(--primary)}
.main-nav ul{list-style:none;margin:0 auto;padding:0 20px;display:flex;gap:2px;max-width:1160px;overflow-x:auto}
.main-nav a{display:block;color:#fff;padding:11px 16px;font-weight:600;font-size:15.5px;white-space:nowrap}
.main-nav a:hover,.main-nav a.active{background:rgba(255,255,255,.14);text-decoration:none}
.main-nav a.active{box-shadow:inset 0 -3px 0 var(--gold)}

/* Sections */
main{padding:28px 0 48px}
.section{margin-top:40px}
.section-head{display:flex;align-items:baseline;justify-content:space-between;border-bottom:2px solid var(--line);margin-bottom:18px}
.section-head h2{margin:0;font-size:22px;padding-bottom:8px;border-bottom:3px solid var(--primary);margin-bottom:-2px}
.section-head a{font-size:15px;font-weight:600}
.page-title{margin:0 0 6px;font-size:32px;color:var(--primary)}
.page-desc{margin:0 0 24px;color:var(--muted)}

/* Cards */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{background:var(--card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:transform .15s,box-shadow .15s}
.card:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(20,36,59,.12)}
.card a.thumb{display:block;aspect-ratio:12/7;overflow:hidden;background:var(--line)}
.card a.thumb img{width:100%;height:100%;object-fit:cover}
.card-body{padding:14px 16px 18px;display:flex;flex-direction:column;gap:6px;flex:1}
.card h3{margin:0;font-size:18.5px;line-height:1.35}
.card h3 a{color:var(--text)}
.card p{margin:0;color:var(--muted);font-size:15.5px}
.meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted)}
.cat{display:inline-block;font-size:12.5px;font-weight:700;color:#fff;background:var(--primary);padding:2px 9px;border-radius:999px}
.cat.dong-huong{background:var(--green)} .cat.su-kien{background:#a5652a} .cat.tin-chung{background:#7a6a4f}
.badge-sample{display:inline-block;font-size:12px;font-weight:700;color:#8a5a00;background:#fff1c9;border:1px solid #f0d58a;padding:1px 7px;border-radius:6px}

/* Featured */
.featured{display:grid;grid-template-columns:1.4fr 1fr;background:var(--card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.featured .thumb{display:block;min-height:320px;background:var(--line)}
.featured .thumb img{width:100%;height:100%;object-fit:cover}
.featured .f-body{padding:28px 30px;display:flex;flex-direction:column;justify-content:center;gap:12px}
.featured h2{margin:0;font-size:30px;line-height:1.25}
.featured h2 a{color:var(--text)}
.featured p{margin:0;color:var(--muted);font-size:17px}
.btn{display:inline-block;background:var(--primary);color:#fff;font-weight:600;padding:10px 18px;border-radius:999px;border:0;font:inherit;font-weight:600;cursor:pointer;align-self:flex-start}
.btn:hover{background:var(--primary-dark);text-decoration:none}

/* Layout with sidebar */
.layout{display:grid;grid-template-columns:1fr 320px;gap:32px;align-items:start}
.sidebar .box{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px 18px 10px;margin-bottom:22px}
.sidebar h3{margin:0 0 10px;font-size:17px;color:var(--primary)}
.mini{display:flex;gap:12px;padding:10px 0;border-top:1px solid var(--line)}
.mini:first-of-type{border-top:0}
.mini img{width:78px;height:52px;object-fit:cover;border-radius:8px;flex:none}
.mini a{color:var(--text);font-weight:600;font-size:15px;line-height:1.35}
.mini .meta{font-size:12.5px}

/* Article */
.article{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.article .hero img{width:100%;aspect-ratio:12/5;object-fit:cover}
.article-inner{padding:26px 34px 34px}
.article h1{margin:8px 0 10px;font-size:34px;line-height:1.25}
.article .lead{font-size:19px;color:var(--muted);margin:0 0 18px;font-weight:500}
.article .content{font-size:17.5px;line-height:1.75;overflow-wrap:break-word}
.article .content p{margin:0 0 14px}
.article .content h2{font-size:24px;line-height:1.3;margin:28px 0 10px;color:var(--primary)}
.article .content h3{font-size:20px;line-height:1.35;margin:22px 0 8px;color:var(--primary)}
.article .content h4{font-size:18px;margin:18px 0 6px}
.article .content a{color:var(--primary);text-decoration:underline;text-decoration-color:var(--gold);text-underline-offset:3px}
.article .content ul,.article .content ol{margin:0 0 16px;padding-left:26px}
.article .content li{margin:4px 0}
.article .content li::marker{color:var(--gold)}
.article .content blockquote{margin:18px 0;padding:12px 18px;border-left:4px solid var(--gold);background:#faf6ec;border-radius:0 10px 10px 0;color:#4a4339;font-style:italic}
.article .content blockquote p:last-child{margin-bottom:0}
.article .content img{max-width:100%;height:auto;border-radius:10px;margin:8px auto;display:block}
.article .content figure{margin:20px 0}
.article .content figcaption{font-size:14.5px;color:var(--muted);text-align:center;margin-top:6px}
.article .content iframe.ql-video{display:block;width:100%;aspect-ratio:16/9;height:auto;border:0;border-radius:10px;margin:16px 0}
.article .content hr{border:0;border-top:1px solid var(--line);margin:24px 0}
.article .content .ql-align-center{text-align:center}.article .content .ql-align-right{text-align:right}.article .content .ql-align-justify{text-align:justify}
.sample-note{background:#fff8e3;border:1px solid #f0d58a;border-radius:10px;padding:10px 14px;font-size:15px;margin:0 0 18px}
.breadcrumb{font-size:14px;color:var(--muted);margin-bottom:14px}
.share{margin-top:24px;padding-top:16px;border-top:1px solid var(--line);display:flex;gap:10px;flex-wrap:wrap;align-items:center;font-size:15px}
.share button{border:1.5px solid var(--line);background:#fff;border-radius:999px;padding:6px 14px;font:inherit;font-size:14px;cursor:pointer}

/* Prose pages */
.prose{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px 34px}
.prose h2{color:var(--primary);font-size:22px;margin:22px 0 8px}
.form{display:grid;gap:14px;max-width:560px}
.form label{font-weight:600;font-size:15px;display:grid;gap:6px}
.form input,.form textarea,.form select{font:inherit;font-weight:400;padding:10px 12px;border:1.5px solid var(--line);border-radius:10px;background:var(--bg)}
.form input:focus,.form textarea:focus,.form select:focus{outline:none;border-color:var(--primary);background:#fff}
.hidden{display:none}
.empty{padding:30px;text-align:center;color:var(--muted);background:var(--card);border-radius:var(--radius)}
.search-big{display:flex;gap:10px;margin-bottom:22px}
.search-big input{flex:1;padding:12px 16px;font:inherit;border:1.5px solid var(--line);border-radius:999px;background:#fff}
mark{background:#f3e3b5;padding:0 2px;border-radius:3px}

/* Footer */
.site-footer{background:#14243b;color:#dfe5ee;padding:36px 0 18px;font-size:15px}
.site-footer a{color:var(--gold-light)}
.footer-brand{display:flex;gap:12px;align-items:center;margin-bottom:10px}
.footer-brand img{width:64px;height:64px;background:#f3f2ed;border-radius:50%;padding:2px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:28px}
.site-footer h4{margin:0 0 10px;color:#fff;font-size:16px}
.site-footer ul{list-style:none;padding:0;margin:0;display:grid;gap:6px}
.copy{border-top:1px solid rgba(255,255,255,.12);margin-top:26px;padding-top:14px;font-size:13.5px;color:#9fb0c6}

/* Responsive */
@media (max-width:960px){
  .grid{grid-template-columns:repeat(2,1fr)}
  .layout{grid-template-columns:1fr}
  .featured{grid-template-columns:1fr}
  .featured .thumb{min-height:0;aspect-ratio:12/6}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  body{font-size:16.5px}
  .topbar .hide-sm{display:none}
  .header-row{flex-wrap:wrap;gap:10px}
  .brand img{width:48px;height:48px}.brand-name{font-size:24px}
  .nav-toggle{display:block;margin-left:auto}
  .search{order:3;width:100%;margin-left:0}.search input{width:100%}
  .main-nav{display:none}.main-nav.open{display:block}
  .main-nav ul{flex-direction:column;padding:0}
  .main-nav a{padding:12px 20px;border-top:1px solid rgba(255,255,255,.1)}
  .grid{grid-template-columns:1fr}
  .grid.compact{gap:12px}
  .grid.compact .card{flex-direction:row}
  .grid.compact .card a.thumb{width:118px;flex:none;aspect-ratio:auto}
  .grid.compact .card-body{padding:10px 12px;gap:4px}
  .grid.compact .card h3{font-size:16px}
  .grid.compact .card p{display:none}
  .featured h2{font-size:24px}.featured .f-body{padding:20px}
  .article-inner,.prose{padding:20px}
  .article h1{font-size:27px}
  .page-title{font-size:27px}
  .footer-grid{grid-template-columns:1fr}
  .site-header{position:static}
}

/* Liên kết mẫu cáo phó */
.main-nav a.nav-ext{color:var(--gold-light)}
.main-nav a.nav-ext:hover{color:#fff}
svg.ext{vertical-align:baseline;margin-left:2px;opacity:.85}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.cp-band{display:flex;align-items:center;gap:18px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;border-radius:var(--radius);padding:20px 24px;box-shadow:var(--shadow);border-left:5px solid var(--gold)}
.cp-band .cp-icon{flex:none;width:48px;height:48px;border-radius:50%;border:2px solid var(--gold);color:var(--gold-light);display:grid;place-items:center;font-size:22px;line-height:1}
.cp-band .cp-text{flex:1;min-width:0}
.cp-band h3{margin:0 0 4px;font-family:"Noto Serif",Georgia,serif;font-size:20px;color:#fff}
.cp-band p{margin:0;color:#e4e9f1;font-size:15.5px}
.cp-band .btn-cp{flex:none;background:var(--gold);color:#1b2a3d;align-self:center;white-space:nowrap}
.cp-band .btn-cp:hover{background:var(--gold-light);text-decoration:none}
.cp-side .cp-icon{display:none}
.cp-side h3{margin:0 0 8px}
.cp-side p{margin:0 0 12px;font-size:15px;color:var(--muted)}
.cp-side .btn-cp{margin-bottom:10px}
@media (max-width:640px){
  .cp-band{flex-direction:column;align-items:flex-start;gap:10px;padding:18px}
  .cp-band .cp-icon{width:40px;height:40px;font-size:19px}
  .cp-band .btn-cp{align-self:flex-start}
}

/* Facebook */
.topbar-right{display:inline-flex;align-items:center;gap:12px}
.topbar-fb{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;margin:-4px 0;border-radius:50%;color:var(--gold-light)}
.topbar-fb:hover,.topbar-fb:focus-visible{background:rgba(255,255,255,.12);color:#fff}
.footer-fb{display:inline-flex;align-items:center;gap:6px}
.fb-follow{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:#1877f2;text-decoration:none}
.fb-follow:hover span:first-of-type{text-decoration:underline}
.fb-icon{flex:none}

/* Song ngữ */
.lang-switch{display:inline-flex;border:1px solid rgba(255,255,255,.28);border-radius:999px;overflow:hidden;margin:-3px 0;font-size:12.5px;font-weight:700;letter-spacing:.04em}
.lang-switch a{color:var(--gold-light);text-decoration:none;padding:3px 10px;line-height:18px}
.lang-switch a:hover,.lang-switch a:focus-visible{background:rgba(255,255,255,.12);color:#fff}
.lang-switch a.on{background:var(--gold-light);color:var(--primary-dark)}
.badge-lang{display:inline-block;font-size:11.5px;font-weight:600;color:#4b5a6e;background:#eef2f7;border:1px solid #d6dee8;padding:0 7px;border-radius:6px;margin-left:6px}
.lang-note{background:#eef2f7;border:1px solid #d6dee8;border-radius:10px;padding:8px 14px;font-size:15px;margin:0 0 18px;color:#33465e}

/* Tệp PDF đính kèm */
.badge-pdf{display:inline-block;font-size:11px;font-weight:800;color:#fff;background:#c0392b;padding:1px 6px;border-radius:5px;letter-spacing:.03em}
.attachments{margin:26px 0 8px;border-top:1px solid var(--line, #e6e0d6);padding-top:18px}
.attachments h2{font-size:20px;margin:0 0 12px}
.pdf-viewer{border:1px solid #d9d3c8;border-radius:10px;overflow:hidden;background:#f2f0ec;margin-bottom:14px}
.pdf-viewer object{display:block;width:100%;height:78vh;min-height:520px;border:0}
.pdf-fallback{font-size:15px;color:var(--muted);margin:0 0 12px;padding:12px 14px}
.pdf-viewer .pdf-fallback{margin:0}
.file-cards{display:grid;gap:10px}
.file-card{display:flex;align-items:center;gap:12px;flex-wrap:wrap;border:1px solid #e3ddd2;border-radius:12px;padding:12px 14px;background:#fff}
.file-ic{flex:none;font-size:12px;font-weight:800;color:#fff;background:#c0392b;border-radius:6px;padding:10px 8px}
.file-info{flex:1 1 180px;min-width:0;display:grid}
.file-name{font-weight:700;overflow-wrap:anywhere}
.file-size{font-size:13.5px;color:var(--muted)}
.file-acts{display:flex;gap:8px;flex-wrap:wrap}
.file-acts .btn{padding:8px 16px}
.file-acts .btn-ghost{background:transparent;color:var(--primary);border:1.5px solid var(--primary)}
.file-acts .btn-ghost:hover{background:var(--primary);color:#fff}