/* PhongThuy.LongLanh.com — Blog/Article styles */
:root{
  --bg:#fbf3e4;--card:#fffdf8;--card2:#fdf6e8;
  --line:#e6cf9e;--line2:#cda044;
  --red:#8a1620;--red2:#a8202c;--red-dk:#6a0f16;
  --gold:#9c7414;--gold2:#c8950e;--gold-lt:#ecd28a;
  --ink:#241204;--ink2:#523414;--muted:#8a6a44;
  --good:#1c7a38;--bad:#b42a18;
  --shadow:0 3px 14px rgba(90,40,0,.13);
}
*{box-sizing:border-box;margin:0;padding:0}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
body{
  font-family:'Segoe UI','Roboto','Helvetica Neue',Arial,sans-serif;
  background:var(--bg);color:var(--ink);font-size:18px;line-height:1.75;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;border-radius:10px}
a{color:var(--red);text-decoration:none;font-weight:600}
a:hover{text-decoration:underline}

/* HEADER */
.bh{background:linear-gradient(135deg,#8a1620,#5e0d14);position:sticky;top:0;z-index:50;
  box-shadow:0 3px 10px rgba(0,0,0,.3)}
.bh-in{max-width:780px;margin:0 auto;display:flex;align-items:center;gap:14px;padding:12px 18px;flex-wrap:wrap}
.bh-logo{display:flex;align-items:center;gap:11px;color:#fbe7b0;font-weight:800;letter-spacing:.5px;font-size:16px;text-decoration:none}
.bh-logo:hover{text-decoration:none;color:#fbe7b0}
.bh-emb{width:38px;height:38px;border-radius:50%;background:radial-gradient(circle at 38% 32%,#f4dd9a,#c8950e);
  display:flex;align-items:center;justify-content:center;color:#5e0d14;font-weight:800;font-size:18px;flex-shrink:0}
.bh-nav{margin-left:auto;display:flex;gap:6px;flex-wrap:wrap}
.bh-nav a{background:rgba(255,255,255,.13);color:#fbe7b0;border:1px solid rgba(251,231,176,.32);
  border-radius:9px;padding:8px 14px;font-size:14px;font-weight:700;text-decoration:none}
.bh-nav a:hover{background:rgba(255,255,255,.25);text-decoration:none}

/* Language switcher */
.lang-sw{display:inline-flex;background:rgba(255,255,255,.13);border:1px solid rgba(251,231,176,.3);border-radius:9px;overflow:hidden;align-items:stretch}
.lang-sw button{background:transparent;border:none;color:#fbe7b0;padding:8px 11px;font-size:12.5px;font-weight:800;cursor:pointer;border-right:1px solid rgba(251,231,176,.22);font-family:inherit;letter-spacing:.5px}
.lang-sw button:last-child{border-right:none}
.lang-sw button:hover{background:rgba(255,255,255,.2)}
.lang-sw button.on{background:#fbe7b0;color:#5e0d14}

/* MAIN */
.wrap{max-width:780px;margin:0 auto;padding:18px}
.crumb{font-size:14px;color:var(--muted);margin-bottom:12px;line-height:1.6}
.crumb a{color:var(--muted);font-weight:600}
.crumb span{color:var(--ink2);font-weight:700}

/* ARTICLE */
.art{background:var(--card);border:1px solid var(--line);border-radius:16px;
  padding:26px 24px;box-shadow:var(--shadow);margin-bottom:16px}
.art h1{font-size:30px;font-weight:800;color:var(--red);line-height:1.3;margin-bottom:10px}
.art .meta{font-size:13.5px;color:var(--muted);font-weight:600;
  padding-bottom:14px;margin-bottom:18px;border-bottom:1px solid var(--line)}
.art .meta b{color:var(--gold)}
.art h2{font-size:22px;font-weight:800;color:var(--red-dk);margin:24px 0 12px;
  padding-left:14px;border-left:5px solid var(--gold2);line-height:1.3}
.art h3{font-size:18px;font-weight:800;color:var(--ink);margin:18px 0 8px}
.art p{margin-bottom:14px;color:var(--ink2)}
.art ul,.art ol{margin:8px 0 16px 22px;color:var(--ink2)}
.art ul li,.art ol li{margin-bottom:7px;line-height:1.7}
.art b,.art strong{color:var(--red-dk);font-weight:800}
.art .lead{font-size:19px;font-weight:600;color:var(--ink2);line-height:1.7;
  padding:14px 16px;border-left:5px solid var(--red2);background:#fff7e0;
  border-radius:0 10px 10px 0;margin-bottom:18px}
.art blockquote{margin:14px 0;padding:14px 18px;background:var(--card2);
  border-left:5px solid var(--gold);border-radius:0 10px 10px 0;
  font-style:italic;color:var(--ink2)}
.art table{width:100%;border-collapse:collapse;margin:14px 0;font-size:15px}
.art table th,.art table td{border:1px solid var(--line);padding:9px 11px;text-align:left}
.art table th{background:var(--card2);color:var(--red);font-weight:800}

.cta{background:linear-gradient(135deg,#fff5e0,#ffeec2);border:1.5px solid var(--gold2);
  border-radius:14px;padding:18px 20px;margin-bottom:16px}
.cta h3{font-size:16px;color:var(--red);margin-bottom:8px;font-weight:800}
.cta p{font-size:14.5px;color:var(--ink2);margin-bottom:10px;line-height:1.6}
.cta a{display:inline-block;background:var(--red);color:#fff;border-radius:9px;
  padding:10px 16px;margin:4px 6px 0 0;font-size:14.5px;font-weight:700}
.cta a:hover{background:var(--red-dk);text-decoration:none}

/* LIST PAGE (blog index) */
.list-grid{display:grid;gap:14px}
.list-card{background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:18px 20px;box-shadow:var(--shadow);transition:.15s}
.list-card:hover{transform:translateY(-2px);box-shadow:0 6px 22px rgba(90,40,0,.18);border-color:var(--gold2)}
.list-card a.tit{font-size:20px;font-weight:800;color:var(--red);display:block;margin-bottom:7px;line-height:1.35}
.list-card .ex{font-size:15px;color:var(--ink2);line-height:1.6;margin-bottom:8px}
.list-card .mt{font-size:13px;color:var(--muted);font-weight:600}

.foot{text-align:center;padding:18px 12px 30px;font-size:13px;color:var(--muted);line-height:1.8}
.foot a{color:var(--muted)}