/* ==========================================================
   Báo Công Thương — Bộ tiện ích trực tuyến (v2)
   Phong cách: đỏ thương hiệu + chất liệu hiện đại
   ========================================================== */

:root{
  --ct-red: #C8102E;
  --ct-red-dark: #9B0C23;
  --ct-red-2:   #E63250;
  --ct-red-soft:#FFF1F3;
  --ct-gold:    #F5B400;
  --ct-blue:    #0E5BD2;
  --ct-green:   #0A7C4A;
  --ct-purple:  #7A3AD8;

  --ink:    #14181F;
  --ink-2:  #3D4654;
  --ink-3:  #6E7886;
  --ink-4:  #9AA3B2;
  --line:   #E4E7EC;
  --line-2: #EFF1F4;
  --bg:     #F4F6FA;
  --bg-2:   #FAFBFD;
  --card:   #FFFFFF;

  --shadow-1: 0 1px 2px rgba(15,23,42,.04), 0 1px 3px rgba(15,23,42,.05);
  --shadow-2: 0 2px 4px rgba(15,23,42,.04), 0 12px 28px rgba(15,23,42,.08);
  --shadow-3: 0 8px 24px rgba(200,16,46,.18);

  --radius-sm: 8px;
  --radius:    14px;
  --radius-lg: 20px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}
a{color:var(--ct-red); text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}
.container{max-width:1340px; margin:0 auto; padding: 0 22px}

/* ===== Header ===== */
.site-header{
  background: #fff;
  border-bottom: 1px solid var(--line);
  position: sticky; top:0; z-index: 50;
  backdrop-filter: saturate(1.2) blur(8px);
}
.site-header::after{
  content:""; display:block; height:3px;
  background: linear-gradient(90deg, var(--ct-red) 0%, var(--ct-red-2) 60%, var(--ct-gold) 100%);
}
.header-inner{
  display:flex; align-items:center; justify-content:space-between;
  padding: 14px 22px;
}
.brand{display:flex; gap:12px; align-items:center; color:var(--ink); text-decoration:none}
.brand:hover{text-decoration:none}
.brand-mark{
  width:44px; height:44px; border-radius:10px;
  background: linear-gradient(135deg, var(--ct-red) 0%, var(--ct-red-dark) 100%);
  color:#fff; display:flex; align-items:center; justify-content:center;
  font-weight:800; font-size:18px; letter-spacing:1px;
  box-shadow: var(--shadow-3);
}
.brand-text strong{display:block; font-size:16px; line-height:1.1; font-weight:700}
.brand-text em{font-style:normal; color:var(--ink-3); font-size:12.5px}
.top-nav{display:flex; gap:6px; align-items:center}
.top-nav a{
  color:var(--ink-2); font-weight:500; font-size:14px;
  padding: 8px 12px; border-radius:8px;
}
.top-nav a:hover{color:var(--ct-red); background: var(--ct-red-soft); text-decoration:none}

/* ===== Hero ===== */
.hero{
  background:
    radial-gradient(1200px 400px at 90% -10%, rgba(245,180,0,.18), transparent 60%),
    radial-gradient(800px 400px at -10% 110%, rgba(255,255,255,.08), transparent 60%),
    linear-gradient(135deg, var(--ct-red-dark) 0%, var(--ct-red) 55%, #E0344C 100%);
  color:#fff; padding: 60px 0 50px;
  position:relative; overflow:hidden;
}
.hero h1{margin:0 0 12px; font-size:38px; letter-spacing:-0.5px; font-weight:700}
.hero p{margin:0 0 26px; opacity:.95; max-width:740px; font-size:16px}
.hero-search{position:relative; max-width:560px}
.hero-search input{
  width:100%;
  padding: 16px 18px 16px 48px;
  border-radius: 999px; border:0;
  font-size:15px; box-shadow: var(--shadow-2);
  background:#fff;
}
.hero-search input:focus{outline:3px solid rgba(245,180,0,.6)}
.hero-search .icon{
  position:absolute; left:18px; top:50%; transform:translateY(-50%);
  color: var(--ink-3);
}
.hero-stats{
  display:flex; gap:24px; margin-top:26px; flex-wrap:wrap;
}
.hero-stats > div{
  background: rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.18);
  padding: 10px 16px; border-radius: 10px; backdrop-filter: blur(6px);
}
.hero-stats strong{display:block; font-size:18px}
.hero-stats span{font-size:12.5px; opacity:.85}

/* ===== Tool groups ===== */
main{padding: 36px 0 60px}
.tool-group{margin-bottom: 42px}
.group-header{margin-bottom: 18px; display:flex; align-items:flex-end; justify-content:space-between; gap:18px; flex-wrap:wrap}
.group-header h2{
  margin:0; font-size:22px; display:flex; align-items:center; gap:12px; font-weight:700;
}
.group-header p{margin:6px 0 0; color:var(--ink-3); font-size:14px}
.group-tag{
  display:inline-flex; align-items:center; gap:6px;
  padding:4px 10px; border-radius:999px; font-size:12px; font-weight:600;
  background: var(--ct-red-soft); color: var(--ct-red);
}
.group-tag.tag-finance{background:#E6F4EC; color:var(--ct-green)}
.group-tag.tag-invest {background:#E5EEFB; color:var(--ct-blue)}
.group-tag.tag-energy {background:#FFF6DC; color:#A87600}
.group-tag.tag-convert{background:#F1E9FB; color:var(--ct-purple)}
.group-tag.tag-misc   {background:#EAECF0; color:var(--ink-2)}
.group-tag.tag-price  {background:#FFE9D6; color:#B14A00}

.tool-grid{
  display:grid;
  grid-template-columns: repeat(auto-fill, minmax(270px,1fr));
  gap: 18px;
}
.tool-card{
  position:relative;
  display:flex; flex-direction:column; gap:10px;
  background:var(--card); border:1px solid var(--line);
  border-radius: var(--radius); padding: 18px 18px 16px;
  color:var(--ink); text-decoration:none;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
  overflow:hidden;
}
.tool-card::before{
  content:""; position:absolute; right:-50px; top:-50px;
  width:140px; height:140px; border-radius:50%;
  background: radial-gradient(circle, rgba(200,16,46,.06) 0%, transparent 70%);
  opacity:0; transition: opacity .25s;
}
.tool-card:hover{
  transform: translateY(-3px);
  box-shadow: var(--shadow-2);
  border-color: var(--ct-red);
  text-decoration:none;
}
.tool-card:hover::before{opacity:1}
.tool-icon{
  width:46px; height:46px; border-radius:12px;
  background: linear-gradient(135deg, var(--ct-red-soft) 0%, #FFE3E8 100%);
  color: var(--ct-red);
  display:flex; align-items:center; justify-content:center;
  margin-bottom:4px;
}
.tool-icon svg{width:24px; height:24px; stroke-width:2}
.tool-card.icon-finance .tool-icon{background:linear-gradient(135deg,#E6F4EC 0%,#CFEBD9 100%); color:var(--ct-green)}
.tool-card.icon-invest  .tool-icon{background:linear-gradient(135deg,#E5EEFB 0%,#C7DAF5 100%); color:var(--ct-blue)}
.tool-card.icon-energy  .tool-icon{background:linear-gradient(135deg,#FFF6DC 0%,#FFE7A6 100%); color:#A87600}
.tool-card.icon-convert .tool-icon{background:linear-gradient(135deg,#F1E9FB 0%,#DAC4F2 100%); color:var(--ct-purple)}
.tool-card.icon-misc    .tool-icon{background:linear-gradient(135deg,#EFF1F4 0%,#D7DAE0 100%); color:var(--ink-2)}
.tool-card.icon-price   .tool-icon{background:linear-gradient(135deg,#FFE9D6 0%,#FFC78A 100%); color:#B14A00}

.tool-card h3{margin:0; font-size:16.5px; font-weight:600}
.tool-card p{margin:0; color:var(--ink-3); font-size:13.5px}
.tool-card .tag{
  position:absolute; top:14px; right:14px;
  font-size:11px; font-weight:700; letter-spacing:.5px;
  padding:3px 8px; border-radius:999px;
  background:#E6F4EC; color:var(--ct-green);
}
.tool-card .tag.tag-hot{background:#FFE9D6; color:#B14A00}
.tool-card .tag.tag-new{background:#E5EEFB; color:var(--ct-blue)}

.empty-state{text-align:center; color:var(--ink-3); padding:24px}

/* ===== Footer ===== */
.site-footer{
  background:#0F141C; color:#B7BFCC; margin-top:30px; padding: 32px 0;
  font-size:13.5px;
}
.footer-inner{display:flex; flex-wrap:wrap; gap:24px; justify-content:space-between}
.site-footer strong{color:#fff}
.site-footer p{margin:4px 0}
.site-footer a{color:#fff}

/* ==========================================================
   Tool page (chi tiết)
   ========================================================== */
.tool-header{background:#fff; border-bottom:1px solid var(--line); padding:22px 0 24px}
.tool-header .crumbs{font-size:13px; color:var(--ink-3); margin-bottom:8px}
.tool-header .crumbs a{color:var(--ink-3)}
.tool-header h1{margin:0; font-size:28px; color:var(--ink); font-weight:700; letter-spacing:-.4px}
.tool-header p{margin:8px 0 0; color:var(--ink-2); max-width:780px}
.tool-header .badge{
  display:inline-flex; align-items:center; gap:6px;
  background: var(--ct-red-soft); color:var(--ct-red);
  padding:4px 10px; border-radius:999px; font-size:12px; font-weight:600;
  margin-bottom:8px;
}

.tool-shell{
  display:grid; grid-template-columns: 1.1fr .9fr; gap:22px;
  padding: 28px 0 30px;
}
@media (max-width: 880px){ .tool-shell{grid-template-columns:1fr} }

.panel{
  background:var(--card); border:1px solid var(--line);
  border-radius: var(--radius); padding: 22px 24px;
  box-shadow: var(--shadow-1);
}
.panel.flat{box-shadow:none}
.panel h2{margin:0 0 14px; font-size:18px; font-weight:700}
.panel h3{margin:18px 0 8px; font-size:13px; color:var(--ink-3); text-transform:uppercase; letter-spacing:.6px; font-weight:700}

.field{margin-bottom:14px}
.field label{display:block; font-size:13.5px; color:var(--ink-2); margin-bottom:6px; font-weight:500}
.field .hint{display:block; font-size:12.5px; color:var(--ink-3); margin-top:4px}
.field input[type=text],
.field input[type=number],
.field input[type=search],
.field input[type=email],
.field select,
.field textarea{
  width:100%;
  padding: 12px 13px; font-size:14.5px;
  border:1px solid var(--line); border-radius: 10px; background:#fff;
  font-family:inherit; color:var(--ink);
  transition: border-color .15s, box-shadow .15s;
}
.field input:focus, .field select:focus, .field textarea:focus{
  outline: 0; border-color: var(--ct-red);
  box-shadow: 0 0 0 3px rgba(200,16,46,.15);
}
.row{display:grid; grid-template-columns:1fr 1fr; gap:12px}
.row-3{display:grid; grid-template-columns:repeat(3,1fr); gap:12px}
@media (max-width:520px){ .row, .row-3{grid-template-columns:1fr} }

/* ===== Buttons (cải thiện contrast) ===== */
.btn{
  appearance:none; border:0; cursor:pointer;
  padding: 12px 22px; border-radius: 10px;
  background: var(--ct-red); color:#fff; font-weight:600; font-size:14.5px;
  transition: transform .1s, background .15s, box-shadow .15s;
  display:inline-flex; align-items:center; gap:8px;
  box-shadow: 0 2px 0 var(--ct-red-dark), 0 6px 14px rgba(200,16,46,.25);
}
.btn:hover{background: var(--ct-red-dark); transform: translateY(-1px); box-shadow: 0 2px 0 #7a0a1c, 0 8px 18px rgba(200,16,46,.35)}
.btn:active{transform: translateY(0); box-shadow: 0 1px 0 var(--ct-red-dark)}
.btn-ghost{
  background:#fff; color:var(--ink); border:1px solid var(--line);
  box-shadow:none;
}
.btn-ghost:hover{background:var(--bg-2); border-color:var(--ink-3); transform:translateY(-1px); box-shadow:var(--shadow-1)}
.btn-dark{
  background: var(--ink); color:#fff; box-shadow: 0 2px 0 #000, 0 6px 14px rgba(0,0,0,.18);
}
.btn-dark:hover{background:#000}
.btn-row{display:flex; gap:10px; flex-wrap:wrap; margin-top:8px}
.btn-icon{
  appearance:none; border:1px solid var(--line); background:#fff;
  width:40px; height:40px; border-radius:10px; cursor:pointer;
  display:inline-flex; align-items:center; justify-content:center;
  color:var(--ink-2); transition:all .15s;
}
.btn-icon:hover{border-color:var(--ct-red); color:var(--ct-red); background:var(--ct-red-soft)}

/* ===== Result box (cải thiện) ===== */
.result-box{
  background: linear-gradient(135deg, var(--ct-red-soft) 0%, #FFE0E5 100%);
  border: 1px solid #F8C9D0;
  border-radius: 14px;
  padding: 20px 22px;
  margin-top: 8px;
  position:relative; overflow:hidden;
}
.result-box::before{
  content:""; position:absolute; right:-30px; bottom:-30px;
  width:120px; height:120px; border-radius:50%;
  background: radial-gradient(circle, rgba(200,16,46,.10) 0%, transparent 70%);
}
.result-box .big{
  font-size: 30px; font-weight:800; color: var(--ct-red); display:block;
  letter-spacing:-.5px;
}
.result-box .small{ color:var(--ink-2); font-size:13.5px}

.kv{display:flex; justify-content:space-between; padding:9px 0; border-bottom:1px dashed var(--line); font-size:14px; gap:12px}
.kv:last-child{border-bottom:0}
.kv span:last-child{font-weight:600; color:var(--ink); text-align:right}

table.tbl{
  width:100%; border-collapse: collapse; font-size:13.8px;
}
table.tbl th, table.tbl td{
  padding:10px 12px; border-bottom:1px solid var(--line); text-align:right;
}
table.tbl th:first-child, table.tbl td:first-child{text-align:left}
table.tbl thead th{background:var(--bg-2); color:var(--ink-2); font-weight:700; text-transform:uppercase; font-size:12px; letter-spacing:.4px}
table.tbl tfoot td{font-weight:700; background:var(--bg-2)}
table.tbl tr.up td{color:#0A7C4A}
table.tbl tr.down td{color:var(--ct-red)}
.cell-up{color:var(--ct-green); font-weight:600}
.cell-down{color:var(--ct-red); font-weight:600}

.note{
  font-size:13px; color:var(--ink-3); background:var(--bg-2);
  border:1px dashed var(--line); border-radius:10px; padding:11px 13px;
  margin-top:14px;
}

.tabbar{display:flex; gap:6px; margin-bottom:16px; border-bottom:1px solid var(--line); flex-wrap:wrap}
.tabbar button{
  appearance:none; background:transparent; border:0; cursor:pointer;
  padding: 10px 16px; font-size:14px; color:var(--ink-2);
  border-bottom:2px solid transparent; font-weight:500; margin-bottom:-1px;
}
.tabbar button:hover{color:var(--ink)}
.tabbar button.active{color:var(--ct-red); border-color:var(--ct-red); font-weight:600}

.back-link{display:inline-block; margin: 8px 0 24px; font-size:13.5px}

/* ==========================================================
   PRICE PAGES
   ========================================================== */
.price-hero{
  background: linear-gradient(135deg, #1A1F2C 0%, #0F141C 100%);
  color:#fff; padding: 32px 0 28px;
}
.price-hero .crumbs{color:#9AA3B2; font-size:13px; margin-bottom:8px}
.price-hero .crumbs a{color:#9AA3B2}
.price-hero h1{margin:0; font-size:28px; display:flex; align-items:center; gap:14px}
.price-hero h1 .ico{
  width:48px; height:48px; border-radius:12px;
  background: linear-gradient(135deg, var(--ct-gold) 0%, #C58E00 100%);
  display:flex; align-items:center; justify-content:center; color:#1A1F2C;
}
.price-hero p{margin:8px 0 0; color:#B7BFCC; max-width:780px}

.price-summary{
  display:grid; grid-template-columns: repeat(auto-fit, minmax(200px,1fr));
  gap:14px; margin-top: 18px;
}
.price-pill{
  background: rgba(255,255,255,.08); border:1px solid rgba(255,255,255,.14);
  border-radius:12px; padding:12px 14px;
  display:flex; align-items:center; gap:12px;
}
.price-pill .lbl{font-size:12.5px; color:#9AA3B2}
.price-pill .val{font-size:18px; font-weight:700; color:#fff}
.price-pill .chg{font-size:12.5px; font-weight:600}
.chg.up{color:#3FE07A}
.chg.down{color:#FF8B9C}
.chg.flat{color:#9AA3B2}

.price-grid{
  display:grid; grid-template-columns: 1.4fr 1fr; gap:22px;
  padding: 28px 0;
}
@media (max-width: 980px){ .price-grid{grid-template-columns:1fr} }

.chart-card{
  background:#fff; border:1px solid var(--line); border-radius: var(--radius);
  padding: 20px 22px; box-shadow: var(--shadow-1);
}
.chart-card-head{
  display:flex; justify-content:space-between; align-items:center; gap:12px; flex-wrap:wrap;
  margin-bottom:14px;
}
.chart-card-head h2{margin:0; font-size:17px}
.range-tabs{display:flex; gap:4px}
.range-tabs button{
  appearance:none; border:1px solid var(--line); background:#fff;
  padding: 6px 12px; border-radius: 8px; font-size:13px; cursor:pointer;
  color: var(--ink-2);
}
.range-tabs button.active{background: var(--ink); color:#fff; border-color:var(--ink)}

.article-list{list-style:none; padding:0; margin:0}
.article-list li{
  padding: 12px 0; border-bottom:1px solid var(--line-2);
}
.article-list li:last-child{border-bottom:0}
.article-list a{
  display:block; color:var(--ink); font-weight:600; font-size:14.5px; line-height:1.4;
}
.article-list a:hover{color: var(--ct-red); text-decoration:none}
.article-list time{
  display:block; font-size:12px; color:var(--ink-3); margin-top:4px;
}
.article-list .src{color:var(--ct-red); font-weight:700; font-size:11.5px; letter-spacing:.4px; text-transform:uppercase}

.related-tools{
  display:grid; grid-template-columns: repeat(auto-fill, minmax(220px,1fr)); gap:12px;
}
.related-tool{
  display:flex; gap:12px; align-items:center;
  border:1px solid var(--line); border-radius:12px; padding:12px;
  text-decoration:none; color:var(--ink); transition: all .15s;
}
.related-tool:hover{border-color:var(--ct-red); background:var(--ct-red-soft); text-decoration:none}
.related-tool .ico{
  width:38px; height:38px; border-radius:10px; flex-shrink:0;
  background: var(--ct-red-soft); color:var(--ct-red);
  display:flex; align-items:center; justify-content:center;
}
.related-tool strong{display:block; font-size:14px}
.related-tool span{font-size:12px; color:var(--ink-3)}

/* ==========================================================
   v3 — COMPACT LAYOUT, LIVE TICKER, ARTICLE/VIDEO CARDS
   ========================================================== */

/* Live ticker (hero) */
.ticker{
  background: rgba(0,0,0,.18); border:1px solid rgba(255,255,255,.12);
  border-radius: 999px; padding: 8px 0; margin-top: 22px;
  overflow: hidden; position:relative;
}
.ticker::before, .ticker::after{
  content:""; position:absolute; top:0; bottom:0; width:60px; z-index:2;
  pointer-events:none;
}
.ticker::before{ left:0;  background: linear-gradient(90deg, var(--ct-red-dark), transparent); }
.ticker::after { right:0; background: linear-gradient(-90deg, var(--ct-red-dark), transparent); }
.ticker-track{
  display:inline-flex; gap: 36px; padding-left:60px;
  white-space:nowrap;
  animation: ticker-scroll 50s linear infinite;
}
.ticker:hover .ticker-track{ animation-play-state: paused }
.ticker-item{
  display:inline-flex; align-items:center; gap:8px;
  font-size:14px; color:#fff;
}
.ticker-item .lbl{ opacity:.78; font-weight:500 }
.ticker-item .val{ font-weight:700 }
.ticker-item .chg{ font-weight:600; font-size:12.5px }
.ticker-item .chg.up{ color:#4ee19a }
.ticker-item .chg.down{ color:#ff8b9c }
@keyframes ticker-scroll{
  0%{transform: translateX(0)}
  100%{transform: translateX(-50%)}
}

/* Quick nav pills (sticky dưới header) */
.quick-nav{
  background:#fff; border-bottom:1px solid var(--line);
  position:sticky; top: 75px; z-index: 40;
}
.quick-nav-scroll{
  display:flex; gap:6px; padding: 10px 0; overflow-x:auto;
  scrollbar-width: none;
}
.quick-nav-scroll::-webkit-scrollbar{ display:none }
.quick-nav-pill{
  flex-shrink:0; padding:8px 14px; border-radius:999px;
  font-size:13.5px; font-weight:600; color:var(--ink-2);
  background: var(--bg-2); border:1px solid var(--line);
  display:inline-flex; align-items:center; gap:8px;
  text-decoration:none; transition: all .15s;
  white-space: nowrap;
}
.quick-nav-pill:hover{
  background: var(--ct-red-soft); color:var(--ct-red); border-color: var(--ct-red);
  text-decoration:none;
}
.quick-nav-pill svg{ width:16px; height:16px }
.quick-nav-pill .count{
  font-size:11px; font-weight:700; padding:2px 7px;
  border-radius: 999px; background:#fff;
  color: var(--ink-3);
}

/* Hero compact */
.hero-compact{ padding: 30px 0 28px }
.hero-compact h1{ font-size:28px; margin-bottom:6px }
.hero-compact p{ font-size:14.5px; margin-bottom: 18px }
.hero-compact .hero-search input{ padding: 13px 18px 13px 44px; font-size: 14px }
.hero-compact .hero-search .icon{ left:16px }
.hero-stats-mini{
  display:flex; gap:12px; margin-top: 14px; flex-wrap:wrap;
}
.hero-stats-mini > div{
  background: rgba(255,255,255,.10); border:1px solid rgba(255,255,255,.16);
  padding:8px 14px; border-radius:8px;
}
.hero-stats-mini strong{font-size:15px; display:block}
.hero-stats-mini span{font-size:12px; opacity:.85}

/* Compact tool grid - 4 cột trên desktop, dày hơn */
.tool-grid-compact{
  display:grid; grid-template-columns: repeat(auto-fill, minmax(220px,1fr));
  gap: 14px;
}
.tool-grid-compact .tool-card{ padding: 16px 14px 14px }
.tool-grid-compact .tool-icon{ width:40px; height:40px; border-radius:10px; margin-bottom: 8px }
.tool-grid-compact .tool-icon svg{ width:22px; height:22px }
.tool-grid-compact .tool-card h3{ font-size:15px; margin-bottom: 2px }
.tool-grid-compact .tool-card p{ font-size:12.5px; line-height:1.4 }

/* Featured carousel - các tiện ích HOT */
.featured-strip{
  display:flex; gap:14px; overflow-x:auto; padding-bottom: 8px;
  scrollbar-width: thin;
  margin-bottom: 28px;
}
.featured-strip::-webkit-scrollbar{ height: 6px }
.featured-strip::-webkit-scrollbar-thumb{ background: var(--line); border-radius: 3px }
.featured-card{
  flex-shrink:0; width: 280px;
  background: linear-gradient(135deg, #fff 0%, var(--bg-2) 100%);
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px 18px; text-decoration:none; color: var(--ink);
  position:relative; overflow:hidden; transition: all .2s;
}
.featured-card:hover{ transform: translateY(-3px); box-shadow: var(--shadow-2); border-color: var(--ct-red); text-decoration:none}
.featured-card .label{
  position:absolute; top:14px; right:14px;
  font-size:11px; font-weight:700; letter-spacing:.4px;
  padding: 3px 8px; border-radius: 999px;
  background: var(--ct-red); color:#fff;
}
.featured-card .label.label-new{ background: var(--ct-blue) }
.featured-card .label.label-update{ background: var(--ct-gold); color: var(--ink) }
.featured-card .ico{
  width:46px; height:46px; border-radius: 12px; margin-bottom: 12px;
  background: linear-gradient(135deg, var(--ct-red) 0%, var(--ct-red-dark) 100%);
  color: #fff; display:flex; align-items:center; justify-content: center;
}
.featured-card .ico svg{ width: 24px; height: 24px }
.featured-card h3{ margin: 0 0 4px; font-size: 16px; font-weight: 700 }
.featured-card p{ margin: 0; font-size: 13px; color: var(--ink-3) }

/* Article card (real articles từ Báo Công Thương) */
.article-card{
  display:flex; flex-direction:column;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); overflow:hidden;
  transition: all .2s;
  text-decoration:none; color:var(--ink);
}
.article-card:hover{
  transform: translateY(-2px); box-shadow: var(--shadow-2);
  border-color: var(--ct-red); text-decoration:none;
}
.article-card .thumb{
  height: 130px; position:relative;
  background:
    linear-gradient(135deg, rgba(200,16,46,.85), rgba(155,12,35,.85)),
    radial-gradient(circle at 70% 30%, rgba(245,180,0,.5), transparent 60%);
  color:#fff; display:flex; align-items:flex-end;
  padding: 12px; font-weight:700;
}
.article-card .thumb.gold{
  background:
    linear-gradient(135deg, rgba(245,180,0,.92), rgba(176,123,0,.95)),
    radial-gradient(circle at 70% 30%, rgba(255,255,255,.3), transparent 60%);
  color: #1f1500;
}
.article-card .thumb.fuel{
  background:
    linear-gradient(135deg, rgba(255,139,58,.92), rgba(177,74,0,.95));
}
.article-card .thumb.oil{
  background:
    linear-gradient(135deg, rgba(63,70,85,.92), rgba(20,24,31,.95)),
    radial-gradient(circle at 70% 30%, rgba(245,180,0,.4), transparent 60%);
}
.article-card .thumb.usd{
  background:
    linear-gradient(135deg, rgba(14,91,210,.92), rgba(7,47,115,.95));
}
.article-card .thumb.silver{
  background:
    linear-gradient(135deg, rgba(216,220,226,.95), rgba(154,163,178,.95));
  color:#1a1f2c;
}
.article-card .thumb.farm{
  background:
    linear-gradient(135deg, rgba(10,124,74,.92), rgba(5,81,48,.95));
}
.article-card .thumb .topic{
  font-size:11px; letter-spacing:.6px; text-transform:uppercase;
  padding: 3px 8px; border-radius: 999px;
  background: rgba(255,255,255,.22); backdrop-filter: blur(6px);
}
.article-card .body{ padding: 14px 16px; flex-grow:1; display:flex; flex-direction:column }
.article-card .src{
  font-size: 11.5px; font-weight:700; letter-spacing:.4px;
  text-transform: uppercase; color: var(--ct-red); margin-bottom: 6px;
}
.article-card h4{
  margin:0 0 6px; font-size: 14.5px; font-weight: 600; line-height: 1.4;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-card time{
  font-size: 12px; color: var(--ink-3); margin-top: auto;
}

.article-grid{
  display:grid; grid-template-columns: repeat(auto-fill, minmax(240px,1fr));
  gap: 14px;
}

/* Video card */
.video-grid{
  display:grid; grid-template-columns: repeat(auto-fill, minmax(260px,1fr));
  gap: 14px;
}
.video-card{
  position:relative; border-radius: var(--radius); overflow:hidden;
  background: #14181F; aspect-ratio: 16/9;
  display:block; text-decoration:none; color:#fff;
  transition: all .2s;
}
.video-card:hover{ transform: translateY(-2px); box-shadow: var(--shadow-2); text-decoration:none }
.video-card .thumb{
  position:absolute; inset:0;
  background-size: cover; background-position: center;
  filter: brightness(.78);
}
.video-card .gradient{
  position:absolute; inset:0;
  background: linear-gradient(180deg, transparent 0%, transparent 50%, rgba(0,0,0,.92) 100%);
}
.video-card .play{
  position:absolute; top:50%; left:50%; transform: translate(-50%, -50%);
  width: 56px; height: 56px; border-radius: 50%;
  background: rgba(255,255,255,.92); color: var(--ct-red);
  display:flex; align-items:center; justify-content:center;
  transition: transform .2s;
}
.video-card:hover .play{ transform: translate(-50%, -50%) scale(1.1) }
.video-card .info{
  position:absolute; left:0; right:0; bottom:0; padding: 12px 14px;
  z-index: 2;
}
.video-card .duration{
  position:absolute; right: 10px; top: 10px;
  background: rgba(0,0,0,.78); color:#fff; font-size:11.5px;
  padding: 2px 7px; border-radius: 5px; font-weight:600;
  z-index: 2;
}
.video-card h5{
  margin: 0; font-size: 14px; font-weight: 600; line-height: 1.4;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-card .meta{
  font-size: 11.5px; opacity: .78; margin-top: 4px;
}

/* Brand list cho gold */
.brand-list{
  display:grid; grid-template-columns: repeat(auto-fill, minmax(280px,1fr));
  gap: 12px; margin-top: 12px;
}
.brand-row{
  display:flex; align-items:center; gap:12px;
  padding: 12px 14px; border:1px solid var(--line); border-radius: 12px;
  background: #fff; transition: all .15s;
}
.brand-row:hover{ border-color: var(--ct-red); box-shadow: var(--shadow-1) }
.brand-row .logo{
  width:42px; height:42px; border-radius: 10px; flex-shrink: 0;
  display:flex; align-items:center; justify-content:center;
  font-size: 13px; font-weight: 800; color:#fff;
  background: linear-gradient(135deg, var(--ct-gold), #C58E00);
}
.brand-row .logo.l-sjc{ background: linear-gradient(135deg, #C8102E, #9B0C23) }
.brand-row .logo.l-pnj{ background: linear-gradient(135deg, #F5B400, #B07B00) }
.brand-row .logo.l-doji{ background: linear-gradient(135deg, #C8102E, #6B0717) }
.brand-row .logo.l-btmc{ background: linear-gradient(135deg, #0E5BD2, #072F73) }
.brand-row .logo.l-pq{ background: linear-gradient(135deg, #7A3AD8, #3F1A82) }
.brand-row .logo.l-mh{ background: linear-gradient(135deg, #0A7C4A, #044229) }
.brand-row .logo.l-nt{ background: linear-gradient(135deg, #FF8B3A, #B14A00) }
.brand-row .logo.l-kt{ background: linear-gradient(135deg, #14181F, #3D4654) }
.brand-row .info{ flex-grow:1; min-width:0 }
.brand-row .name{ font-size: 13.5px; font-weight: 700; line-height:1.2 }
.brand-row .sub{ font-size: 12px; color: var(--ink-3); margin-top: 2px }
.brand-row .price{ text-align: right; flex-shrink:0 }
.brand-row .price .buy{ font-size: 11.5px; color: var(--ink-3); display:block }
.brand-row .price .sell{
  font-size: 15px; font-weight: 800; color: var(--ct-red);
  display:flex; align-items:center; gap: 4px; justify-content: flex-end;
}
.brand-row .price .arrow.up{ color: var(--ct-green) }
.brand-row .price .arrow.down{ color: var(--ct-red) }

/* Section headers (more polish) */
.sec-head{
  display:flex; align-items:flex-end; justify-content:space-between;
  margin-bottom: 14px; gap: 14px; flex-wrap: wrap;
}
.sec-head h2{ margin: 0; font-size: 18px; font-weight: 700 }
.sec-head .sub{ color: var(--ink-3); font-size: 13.5px; margin: 4px 0 0 }
.sec-head .more{ font-size: 13px; color: var(--ct-red); font-weight: 600 }

/* Animation: tool card pulse */
@keyframes pulse-red{
  0%, 100%{ box-shadow: 0 0 0 0 rgba(200,16,46,.4) }
  50%{ box-shadow: 0 0 0 8px rgba(200,16,46,0) }
}
.pulse{ animation: pulse-red 2s ease-in-out infinite }

/* ==========================================================
   v4 — Featured grid (vertical), price-change-prominent,
   video-hover-autoplay, full-width price layout, utility sidebar
   ========================================================== */

/* Featured grid (thay strip cuộn ngang) */
.featured-grid{
  display:grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px; margin-bottom: 30px;
}
.featured-grid .featured-card{ width: auto; flex-shrink: initial }

/* Price tool card on index — nổi bật giá + biến động */
.tool-card.price-card{
  display:flex; flex-direction:column; gap: 10px;
  padding: 16px 16px 14px;
}
.tool-card .pc-head{ display:flex; align-items:center; gap:10px }
.tool-card .pc-head .tool-icon{ margin-bottom: 0; width: 38px; height: 38px }
.tool-card .pc-head .tool-icon svg{ width: 20px; height: 20px }
.tool-card .pc-head h3{ font-size: 15px; flex-grow: 1; margin: 0 }
.tool-card .pc-now{
  display:flex; align-items:baseline; gap:8px; flex-wrap: wrap;
  margin-top: 4px;
}
.tool-card .pc-now .now{
  font-size: 22px; font-weight: 800; color: var(--ink);
  letter-spacing: -.4px; line-height: 1.1;
}
.tool-card .pc-now .unit{ font-size: 12px; color: var(--ink-3); font-weight: 500 }
.tool-card .pc-chg{
  display:inline-flex; align-items:center; gap: 5px;
  padding: 4px 10px; border-radius: 999px;
  font-size: 12.5px; font-weight: 700;
  width: fit-content;
}
.tool-card .pc-chg.up{
  background: linear-gradient(135deg, rgba(10,124,74,.12), rgba(10,124,74,.18));
  color: #0A7C4A;
  border: 1px solid rgba(10,124,74,.22);
}
.tool-card .pc-chg.down{
  background: linear-gradient(135deg, rgba(200,16,46,.10), rgba(200,16,46,.18));
  color: var(--ct-red);
  border: 1px solid rgba(200,16,46,.22);
}
.tool-card .pc-chg.flat{
  background: var(--bg-2); color: var(--ink-3);
  border: 1px solid var(--line);
}
.tool-card .pc-chg .arrow{ font-size: 10px }
.tool-card .pc-sub{
  font-size: 12.5px; color: var(--ink-3); margin: 0;
  border-top: 1px dashed var(--line); padding-top: 8px;
}

/* ====== PRICE PAGE LAYOUT v2: 2-col main+sidebar (sidebar đầy) ====== */
.price-layout{
  display:grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  gap: 22px;
  padding: 24px 0 36px;
}
@media (max-width: 1080px){ .price-layout{grid-template-columns:1fr} }

.price-layout .main-col > .panel,
.price-layout .main-col > .chart-card{ margin-bottom: 18px }

.side-col > section{ margin-bottom: 18px }
@media (min-width: 1081px){
  .side-col{
    /* Mỗi panel trong side-col có thể tự có max-height + overflow */
  }
  .side-col .sticky-tools{ position: sticky; top: 92px }
}

.side-col h2{
  display:flex; align-items:center; gap:8px;
  font-size: 16px; margin: 0 0 12px;
}
.side-col h2 .badge{
  font-size: 10.5px; font-weight: 700; padding: 2px 8px; border-radius: 999px;
  background: var(--ct-red); color:#fff; letter-spacing:.4px;
}
.side-col .article-grid{
  grid-template-columns: 1fr;
  gap: 10px;
}
.side-col .article-card{ flex-direction:row }
.side-col .article-card .thumb{
  width: 96px; height: auto; min-height: 88px; flex-shrink: 0;
}
.side-col .article-card .body{ padding: 10px 12px }
.side-col .article-card h4{
  font-size: 13.5px; -webkit-line-clamp: 3;
}
.side-col .article-card time{ font-size: 11px }
.side-col .article-card .src{ font-size: 11px; margin-bottom: 3px }

.side-col .video-grid{
  grid-template-columns: 1fr; gap: 10px;
}
.side-col .video-card{ aspect-ratio: 16/10 }
.side-col .video-card h5{ font-size: 13px }
.side-col .video-card .meta{ font-size: 11px }
.side-col .video-card .play{ width: 48px; height: 48px }

/* HOT info box (highlight tăng/giảm) */
.hot-box{
  background: linear-gradient(135deg, var(--ct-red) 0%, var(--ct-red-dark) 100%);
  color: #fff; border-radius: var(--radius);
  padding: 16px 18px; box-shadow: var(--shadow-2);
  position:relative; overflow: hidden;
}
.hot-box::before{
  content:""; position:absolute; right:-30px; top:-30px;
  width: 130px; height: 130px; border-radius: 50%;
  background: rgba(245,180,0,.22);
}
.hot-box .lbl{
  display:inline-flex; align-items:center; gap:6px;
  font-size: 12px; font-weight: 700; letter-spacing: .6px;
  text-transform: uppercase; opacity: .9; margin-bottom: 8px;
}
.hot-box h3{ margin: 0 0 4px; font-size: 22px; font-weight: 800; letter-spacing: -.5px }
.hot-box .delta{
  display:flex; align-items:baseline; gap:8px;
  font-size: 30px; font-weight: 800;
  margin: 6px 0 4px;
}
.hot-box .delta .pct{ font-size: 16px; opacity: .9 }
.hot-box .desc{ font-size: 13px; opacity: .92 }
.hot-box.down{
  background: linear-gradient(135deg, #14181F 0%, #3D4654 100%);
}
.hot-box.up{
  background: linear-gradient(135deg, #0A7C4A 0%, #055130 100%);
}

/* ====== VIDEO HOVER AUTOPLAY ====== */
.video-card{ cursor: pointer }
.video-card iframe{
  position:absolute; inset:0; width:100%; height:100%;
  border: 0; opacity: 0; transition: opacity .3s;
  pointer-events: none;
}
.video-card.playing iframe{ opacity: 1; pointer-events: auto }
.video-card.playing .thumb{ opacity: 0 }
.video-card.playing .gradient,
.video-card.playing .play,
.video-card.playing .duration{ opacity: 0; transition: opacity .3s }
.video-card.playing .info{ opacity: 0; transition: opacity .3s }
.video-card .thumb{ transition: opacity .3s }

/* ====== UTILITY TOOL PAGE LAYOUT (with articles sidebar) ====== */
.tool-layout-3{
  display:grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, .85fr) minmax(0, .8fr);
  gap: 20px;
  padding: 24px 0 36px;
}
@media (max-width: 1180px){
  .tool-layout-3{ grid-template-columns: minmax(0,1fr) minmax(0,1fr) }
  .tool-layout-3 .col-articles{ grid-column: 1 / -1 }
}
@media (max-width: 720px){
  .tool-layout-3{ grid-template-columns: 1fr }
}

/* Tool page layout: form/result + sidebar articles */
.tool-page-layout{
  display:grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr);
  gap: 22px;
  padding: 6px 0 30px;
}
@media (max-width: 1080px){ .tool-page-layout{grid-template-columns:1fr} }
.tool-page-layout .main-col .tool-shell{ padding-top: 0; padding-bottom: 0 }
.tool-page-layout .side-col .article-card{ flex-direction: row }
.tool-page-layout .side-col .article-card .thumb{
  width: 96px; height: auto; min-height: 88px; flex-shrink: 0;
}
.tool-page-layout .side-col .article-card .body{ padding: 10px 12px }
.tool-page-layout .side-col .article-card h4{
  font-size: 13.5px; -webkit-line-clamp: 3;
}

/* Stats prominent on price-pill */
.price-pill .chg{ font-size: 13px; font-weight: 700 }
.price-pill .chg.up::before{ content:"▲ "; }
.price-pill .chg.down::before{ content:"▼ "; }

/* Compact featured cards inside Featured grid - hiển thị giá+chg */
.featured-card.fc-price{
  padding: 14px 16px; display:flex; flex-direction:column; gap: 6px;
}
.featured-card.fc-price .top{
  display:flex; align-items:center; gap:10px;
}
.featured-card.fc-price .top .ico{
  width:36px; height:36px; border-radius: 10px; margin: 0;
}
.featured-card.fc-price .top .ico svg{ width: 20px; height: 20px }
.featured-card.fc-price h3{ flex-grow: 1; font-size: 15px; margin: 0 }
.featured-card.fc-price .now{
  font-size: 22px; font-weight: 800; color: var(--ink);
  letter-spacing: -.4px; margin-top: 2px;
}
.featured-card.fc-price .now .unit{
  font-size: 12px; color: var(--ink-3); font-weight: 500;
  margin-left: 4px;
}
.featured-card.fc-price .chg-row{
  display:flex; align-items:center; gap: 8px; flex-wrap: wrap;
}
.featured-card.fc-price .chg{
  display:inline-flex; align-items:center; gap: 4px;
  padding: 3px 9px; border-radius: 999px;
  font-size: 12.5px; font-weight: 700;
}
.featured-card.fc-price .chg.up{
  background: rgba(10,124,74,.13); color: #0A7C4A;
}
.featured-card.fc-price .chg.down{
  background: rgba(200,16,46,.13); color: var(--ct-red);
}
.featured-card.fc-price .chg.flat{
  background: var(--bg-2); color: var(--ink-3);
}
.featured-card.fc-price p{ font-size: 12.5px; color: var(--ink-3); margin: 4px 0 0 }