/* =========================================================
   VINATHIS LIFE STYLE — Design System
   Luxury Editorial Theme: Onyx Black + Champagne Gold
   ========================================================= */

:root{
  --c-bg: #0c0c0d;
  --c-bg-alt: #131315;
  --c-bg-card: #17171a;
  --c-bg-card-hover: #1e1e22;
  --c-line: #2a2a2e;
  --c-line-soft: #232326;
  --c-ivory: #f3efe6;
  --c-ivory-dim: #cfc9bb;
  --c-muted: #8f8b83;
  --c-gold: #c9a15a;
  --c-gold-bright: #e6c07a;
  --c-gold-dim: #8a6f3d;
  --c-wine: #6b1f2a;
  --c-emerald: #2f5c4c;
  --c-sapphire: #2d4a63;
  --font-display: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body: 'Jost', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --radius-sm: 4px;
  --radius: 10px;
  --radius-lg: 18px;
  --shadow-soft: 0 10px 40px rgba(0,0,0,.45);
  --shadow-card: 0 6px 24px rgba(0,0,0,.35);
  --maxw: 1240px;
  --header-h: 76px;
}

*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); overflow-x: hidden; max-width: 100%; }
body{
  margin:0;
  background: var(--c-bg);
  color: var(--c-ivory-dim);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  max-width: 100%;
  padding-top: var(--header-h);
}
img{ max-width:100%; display:block; }
a{ color: inherit; text-decoration: none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4,h5{
  font-family: var(--font-display);
  color: var(--c-ivory);
  font-weight: 600;
  line-height: 1.25;
  margin: 0 0 .5em;
}
p{ margin: 0 0 1em; }
.container{ max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.gold{ color: var(--c-gold); }
.serif{ font-family: var(--font-display); }

/* subtle gold divider */
.divider{
  width: 64px; height: 2px; margin: 18px 0;
  background: linear-gradient(90deg, var(--c-gold), transparent);
}
.divider.center{ margin-left:auto; margin-right:auto; }

/* eyebrow label */
.eyebrow{
  display:inline-flex; align-items:center; gap:10px;
  font-family: var(--font-body);
  font-size: 12.5px; letter-spacing: .22em; text-transform: uppercase;
  color: var(--c-gold);
  font-weight: 500;
}
.eyebrow::before{ content:''; width:22px; height:1px; background: var(--c-gold); }

/* =============== BUTTONS =============== */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding: 13px 28px;
  border-radius: 999px;
  font-family: var(--font-body);
  font-size: 14.5px; letter-spacing: .04em;
  border: 1px solid var(--c-gold);
  cursor:pointer;
  transition: all .25s ease;
  white-space: nowrap;
}
.btn-gold{ background: var(--c-gold); color:#161104; font-weight:600; }
.btn-gold:hover{ background: var(--c-gold-bright); border-color: var(--c-gold-bright); transform: translateY(-1px); }
.btn-outline{ background: transparent; color: var(--c-gold); }
.btn-outline:hover{ background: rgba(201,161,90,.1); transform: translateY(-1px); }
.btn-sm{ padding: 8px 18px; font-size: 13px; }

/* =============== HEADER / NAV =============== */
#site-header{
  position: fixed; top:0; left:0; right:0; z-index: 500;
  height: var(--header-h);
  display:flex; align-items:center;
  background: rgba(12,12,13,.86);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--c-line-soft);
}
.header-inner{
  width:100%; max-width: var(--maxw); margin:0 auto; padding: 0 24px;
  display:flex; align-items:center; justify-content:space-between; gap: 24px;
}
.brand{ display:flex; align-items:center; gap:12px; flex-shrink:0; }
.brand img{ height: 40px; width:auto; border-radius: 6px; }
.brand-text{ display:flex; flex-direction:column; line-height:1.1; }
.brand-text .name{ font-family: var(--font-display); font-size: 17px; color: var(--c-ivory); letter-spacing:.02em; }
.brand-text .tag{ font-size: 10px; letter-spacing:.18em; color: var(--c-gold); text-transform: uppercase; margin-top:3px; }

/* Dấu + siêu chỉ số ở góc chữ "t" trong wordmark Viet+ */
sup.plus{
  font-size: .55em;
  line-height: 0;
  position: relative;
  top: -0.75em;
  left: -.05em;
  color: var(--c-gold);
  font-weight: 600;
  vertical-align: baseline;
}

.main-nav{ display:flex; align-items:center; gap: 2px; }
.main-nav > ul{ display:flex; align-items:center; gap: 4px; }
.main-nav a.nav-link{
  padding: 10px 14px; font-size: 14px; color: var(--c-ivory-dim);
  border-radius: 6px; transition: color .2s ease, background .2s ease;
  display:flex; align-items:center; gap:6px;
}
.main-nav a.nav-link:hover, .main-nav a.nav-link.active{ color: var(--c-gold); background: rgba(201,161,90,.08); }
.has-mega{ position: relative; }
.mega{
  position:absolute; top: calc(100% + 14px); left: 50%; transform: translateX(-50%);
  width: 560px; max-width: 80vw;
  background: var(--c-bg-card); border:1px solid var(--c-line);
  border-radius: var(--radius); box-shadow: var(--shadow-soft);
  padding: 20px; display:grid; grid-template-columns: 1fr 1fr; gap: 6px;
  opacity:0; visibility:hidden; transform: translateX(-50%) translateY(8px);
  transition: all .22s ease;
}
.has-mega:hover .mega, .has-mega:focus-within .mega{ opacity:1; visibility:visible; transform: translateX(-50%) translateY(0); }
.mega a{ display:flex; flex-direction:column; gap:2px; padding:10px 12px; border-radius:8px; }
.mega a:hover{ background: rgba(201,161,90,.08); }
.mega a .t{ color: var(--c-ivory); font-size:14px; font-weight:500; }
.mega a .d{ color: var(--c-muted); font-size:12.5px; }

.header-actions{ display:flex; align-items:center; gap:14px; }
.call-chip{
  display:flex; align-items:center; gap:8px;
  padding: 8px 16px; border-radius: 999px;
  border: 1px solid var(--c-gold-dim); color: var(--c-gold-bright); font-size: 13px;
}
.call-chip svg{ width:14px; height:14px; }
.burger{ display:none; width:38px; height:38px; border:1px solid var(--c-line); border-radius:8px; background:none; color:var(--c-ivory); cursor:pointer; align-items:center; justify-content:center; }

/* mobile drawer */
.mobile-drawer{
  position: fixed; inset: 0; z-index: 900; display:none;
}
.mobile-drawer.open{ display:block; }
.mobile-drawer .backdrop{ position:absolute; inset:0; background: rgba(0,0,0,.6); }
.mobile-drawer .panel{
  position:absolute; top:0; right:0; height:100%; width: min(340px, 86vw);
  background: var(--c-bg-alt); border-left: 1px solid var(--c-line);
  padding: 22px; overflow-y:auto;
}
.mobile-drawer .panel-head{ display:flex; justify-content:space-between; align-items:center; margin-bottom: 18px; }
.mobile-drawer .close-btn{ background:none; border:1px solid var(--c-line); color:var(--c-ivory); width:34px; height:34px; border-radius:8px; cursor:pointer; }
.mobile-drawer details{ border-bottom: 1px solid var(--c-line-soft); padding: 6px 0; }
.mobile-drawer summary{ padding: 10px 4px; font-size:15px; color: var(--c-ivory); cursor:pointer; display:flex; justify-content:space-between; align-items:center; }
.mobile-drawer summary::-webkit-details-marker{ display:none; }
.mobile-drawer .sub-links{ padding: 4px 4px 12px 10px; display:flex; flex-direction:column; gap:2px; }
.mobile-drawer .sub-links a{ padding: 8px 6px; color: var(--c-ivory-dim); font-size: 14px; border-radius:6px; }
.mobile-drawer .sub-links a:hover{ color: var(--c-gold); background: rgba(201,161,90,.06); }
.mobile-drawer > .panel > a.top-link{ display:block; padding:12px 4px; color: var(--c-ivory); border-bottom:1px solid var(--c-line-soft); }

/* =============== HERO =============== */
.hero{
  position: relative; overflow:hidden;
  padding: 118px 0 100px;
  min-height: 620px;
  display: flex; align-items: center;
  background:
    linear-gradient(96deg,
      rgba(12,12,13,.96) 0%,
      rgba(12,12,13,.93) 38%,
      rgba(12,12,13,.86) 52%,
      rgba(12,12,13,.44) 64%,
      rgba(12,12,13,.20) 76%,
      rgba(12,12,13,.10) 88%,
      rgba(12,12,13,.24) 100%),
    radial-gradient(1000px 460px at 10% -10%, rgba(201,161,90,.11), transparent 62%),
    url("../img/hero.jpg") right center / cover no-repeat,
    var(--c-bg);
  border-bottom: 1px solid var(--c-line-soft);
}
.hero > .container{ width: 100%; }
.hero-inner{ max-width: 640px; position: relative; z-index: 2; }
.hero-grid{ display:grid; grid-template-columns: 1.1fr .9fr; gap: 60px; align-items:center; }
.hero h1{ font-size: clamp(34px, 4.6vw, 56px); }
.hero p.lead{ font-size: 17.5px; color: var(--c-ivory-dim); max-width: 540px; }
.hero-actions{ display:flex; gap:14px; margin-top: 28px; flex-wrap:wrap; }
.hero-visual{ position:relative; border-radius: var(--radius-lg); overflow:hidden; border:1px solid var(--c-line); box-shadow: var(--shadow-soft); aspect-ratio: 4/5; }
.hero-visual .frame{
  width:100%; height:100%;
  background: linear-gradient(155deg, #1b1712 0%, #0c0c0d 55%, #1c1310 100%);
  display:flex; align-items:center; justify-content:center; position:relative;
}
.hero-visual .frame::before{
  content:''; position:absolute; inset: 18px; border: 1px solid rgba(201,161,90,.35); border-radius: 12px;
}
.hero-visual .brandmark{ text-align:center; padding: 24px; }
.hero-visual .brandmark img{ width: 92px; margin: 0 auto 18px; opacity:.95; }
.hero-visual .brandmark .big{ font-family: var(--font-display); font-size:26px; color: var(--c-ivory); }
.hero-visual .brandmark .small{ font-size:11px; letter-spacing:.24em; color: var(--c-gold); text-transform:uppercase; margin-top:8px; }
.hero-stats{ display:flex; gap: 28px; margin-top: 40px; flex-wrap:wrap; }
.hero-stats .stat b{ display:block; font-family: var(--font-display); font-size: 26px; color: var(--c-gold); }
.hero-stats .stat span{ font-size: 12.5px; color: var(--c-muted); text-transform:uppercase; letter-spacing:.08em; }

/* =============== SECTIONS =============== */
section{ padding: 90px 0; }
.section-head{ max-width: 720px; margin: 0 auto 52px; text-align:center; }
.section-head.left{ margin-left:0; text-align:left; }
.section-head h2{ font-size: clamp(26px, 3.2vw, 38px); }
.section-alt{ background: var(--c-bg-alt); border-top:1px solid var(--c-line-soft); border-bottom:1px solid var(--c-line-soft); }

/* Category grid on homepage */
.cat-grid{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.cat-card{
  position:relative; background: var(--c-bg-card); border:1px solid var(--c-line);
  border-radius: var(--radius); padding: 30px 26px; overflow:hidden;
  transition: transform .28s ease, border-color .28s ease, background .28s ease;
}
.cat-card::after{
  content:''; position:absolute; right:-40px; bottom:-40px; width:140px; height:140px;
  background: radial-gradient(circle, rgba(201,161,90,.14), transparent 70%);
}
.cat-card:hover{ transform: translateY(-6px); border-color: var(--c-gold-dim); background: var(--c-bg-card-hover); }
.cat-card .icon{
  width:52px; height:52px; border-radius:12px; display:flex; align-items:center; justify-content:center;
  background: rgba(201,161,90,.10); color: var(--c-gold); margin-bottom: 20px; font-size: 22px;
}
.cat-card h3{ font-size: 20px; margin-bottom: 8px; }
.cat-card p{ font-size: 14.5px; color: var(--c-muted); margin-bottom: 18px; }
.cat-card .go{ font-size: 13px; color: var(--c-gold); display:inline-flex; align-items:center; gap:6px; }
.cat-card .tags{ display:flex; gap:8px; flex-wrap:wrap; margin-bottom: 16px; }
.cat-card .tags span{ font-size:11px; padding:4px 10px; border:1px solid var(--c-line); border-radius:999px; color: var(--c-muted); }

/* Generic content cards */
.grid-3{ display:grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
.grid-2{ display:grid; grid-template-columns: repeat(2,1fr); gap: 22px; }
.card{ background: var(--c-bg-card); border:1px solid var(--c-line); border-radius: var(--radius); padding: 26px; }
.card h3{ font-size: 18px; }
.card h4{ font-size:15px; color: var(--c-gold-bright); }

/* Table styling */
.table-wrap{ overflow-x:auto; border:1px solid var(--c-line); border-radius: var(--radius); }
table{ width:100%; border-collapse: collapse; min-width: 640px; }
thead th{ background: var(--c-bg-card); color: var(--c-gold); text-align:left; font-size:13px; letter-spacing:.04em; text-transform:uppercase; padding: 14px 16px; border-bottom:1px solid var(--c-line); }
tbody td{ padding: 14px 16px; border-bottom:1px solid var(--c-line-soft); font-size:14.5px; vertical-align:top; }
tbody tr:hover{ background: rgba(201,161,90,.04); }
tbody tr:last-child td{ border-bottom:none; }

/* Accordion */
.accordion .acc-item{ border-bottom: 1px solid var(--c-line-soft); }
.accordion .acc-item summary{
  list-style:none; cursor:pointer; padding: 20px 4px;
  display:flex; align-items:center; justify-content:space-between; gap: 16px;
}
.accordion .acc-item summary::-webkit-details-marker{ display:none; }
.accordion .acc-item summary .q{ font-family: var(--font-display); font-size:18px; color: var(--c-ivory); }
.accordion .acc-item summary .plus{ width:26px; height:26px; border:1px solid var(--c-gold-dim); border-radius:50%; display:flex; align-items:center; justify-content:center; color: var(--c-gold); flex-shrink:0; transition: transform .25s ease; }
.accordion .acc-item[open] summary .plus{ transform: rotate(45deg); }
.accordion .acc-item .body{ padding: 0 4px 26px; color: var(--c-ivory-dim); font-size: 15px; }
.accordion .acc-item .body p{ margin: 0 0 12px; }
.accordion .acc-item .body ul{ margin: 0 0 12px; padding-left: 18px; list-style: disc; }
.accordion .acc-item .body li{ margin-bottom:6px; }

/* Tabs */
.tabs-nav{ display:flex; gap:8px; flex-wrap:wrap; margin-bottom: 30px; }
.tabs-nav button{
  padding: 10px 20px; border-radius: 999px; border:1px solid var(--c-line);
  background: transparent; color: var(--c-ivory-dim); cursor:pointer; font-family: var(--font-body); font-size:14px;
  transition: all .2s ease;
}
.tabs-nav button.active, .tabs-nav button:hover{ border-color: var(--c-gold); color: var(--c-gold); background: rgba(201,161,90,.08); }
.tab-panel{ display:none; }
.tab-panel.active{ display:block; animation: fadeIn .35s ease; }
@keyframes fadeIn{ from{ opacity:0; transform: translateY(6px);} to{ opacity:1; transform:none; } }

/* Pill filter groups (for interactive tools) */
.filter-group{ margin-bottom: 22px; }
.filter-group .label{ font-size:12.5px; letter-spacing:.1em; text-transform:uppercase; color: var(--c-gold); margin-bottom:10px; display:block; }
.pill-row{ display:flex; gap:10px; flex-wrap:wrap; }
.pill{
  padding: 9px 18px; border-radius:999px; border:1px solid var(--c-line);
  background: var(--c-bg-card); color: var(--c-ivory-dim); font-size: 13.5px; cursor:pointer;
  transition: all .2s ease;
}
.pill:hover{ border-color: var(--c-gold-dim); }
.pill.selected{ background: var(--c-gold); color:#161104; border-color: var(--c-gold); font-weight:600; }

/* Result panel for tools */
.result-panel{
  margin-top: 30px; background: var(--c-bg-card); border:1px solid var(--c-gold-dim);
  border-radius: var(--radius); padding: 30px; position:relative;
}
.result-panel .rp-head{ display:flex; align-items:center; gap:12px; margin-bottom: 14px; }
.result-panel .rp-head .badge{ width:40px; height:40px; border-radius:50%; background: rgba(201,161,90,.14); color: var(--c-gold); display:flex; align-items:center; justify-content:center; font-size:18px; }
.result-panel .rp-title{ font-family: var(--font-display); font-size: 22px; color: var(--c-ivory); }
.result-panel .rp-sub{ font-size: 13px; color: var(--c-muted); }
.result-grid{ display:grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top:18px; }
.result-block .k{ font-size:12px; letter-spacing:.08em; text-transform:uppercase; color: var(--c-gold); margin-bottom:6px; }
.result-block .v{ font-size: 14.5px; color: var(--c-ivory-dim); }
.chip-list{ display:flex; gap:8px; flex-wrap:wrap; }
.chip-list span{ font-size:12.5px; padding:5px 12px; background: rgba(201,161,90,.08); border:1px solid var(--c-line); border-radius:999px; color: var(--c-ivory-dim); }
.empty-hint{ text-align:center; padding: 40px 20px; color: var(--c-muted); font-size:14.5px; }

/* Breadcrumb */
.breadcrumb{ padding: 18px 0; font-size:13px; color: var(--c-muted); border-bottom:1px solid var(--c-line-soft); }
.breadcrumb a{ color: var(--c-muted); }
.breadcrumb a:hover{ color: var(--c-gold); }
.breadcrumb .sep{ margin: 0 8px; opacity:.5; }
.breadcrumb .current{ color: var(--c-gold-bright); }

/* Page header banner (for inner pages) */
.page-hero{
  padding: 64px 0 56px;
  background: radial-gradient(900px 400px at 10% 0%, rgba(201,161,90,.08), transparent 60%), var(--c-bg-alt);
  border-bottom: 1px solid var(--c-line-soft);
}
.page-hero h1{ font-size: clamp(30px, 4vw, 46px); max-width: 780px; }
.page-hero p{ max-width: 640px; color: var(--c-ivory-dim); font-size: 16.5px; }
.toc-chips{ display:flex; gap:10px; flex-wrap:wrap; margin-top:26px; }
.toc-chips a{ font-size:13px; padding: 8px 16px; border:1px solid var(--c-line); border-radius:999px; color: var(--c-ivory-dim); }
.toc-chips a:hover{ border-color: var(--c-gold); color: var(--c-gold); }

/* Sub-section heading with number */
.subsec-title{ display:flex; align-items:baseline; gap:14px; margin-bottom: 8px; }
.subsec-title .num{ font-family: var(--font-display); font-size: 15px; color: var(--c-gold-dim); }
.subsec-title h2{ margin:0; }
.subsec-lead{ color: var(--c-muted); max-width: 680px; margin-bottom: 40px; }

/* Quote / callout */
.callout{
  border-left: 3px solid var(--c-gold); background: rgba(201,161,90,.05);
  padding: 18px 22px; border-radius: 0 var(--radius) var(--radius) 0; margin: 24px 0;
  font-size: 14.5px; color: var(--c-ivory-dim);
}
.callout b{ color: var(--c-gold-bright); }

/* Comparison two-column (Á vs Âu, Đông vs Tây) */
.vs-wrap{ display:grid; grid-template-columns: 1fr auto 1fr; gap: 0; align-items:stretch; }
.vs-col{ background: var(--c-bg-card); border:1px solid var(--c-line); padding: 28px; }
.vs-col:first-child{ border-radius: var(--radius) 0 0 var(--radius); }
.vs-col:last-child{ border-radius: 0 var(--radius) var(--radius) 0; }
.vs-mid{ display:flex; align-items:center; justify-content:center; width:70px; }
.vs-mid span{ width:44px; height:44px; border-radius:50%; background: var(--c-gold); color:#161104; display:flex; align-items:center; justify-content:center; font-family: var(--font-display); font-weight:700; font-size:13px; }
.vs-col h3{ display:flex; align-items:center; gap:10px; font-size:19px; }

/* Footer */
#site-footer{ background: #08080a; border-top:1px solid var(--c-line-soft); padding: 64px 0 0; }
.footer-grid{ display:grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 44px; }
.footer-brand .brand{ margin-bottom: 16px; }
.footer-brand p{ font-size:14px; color: var(--c-muted); max-width: 300px; }
.footer-col h5{ color: var(--c-ivory); font-size:13px; letter-spacing:.1em; text-transform:uppercase; margin-bottom: 18px; font-family: var(--font-body); font-weight:600; }
.footer-col ul{ display:flex; flex-direction:column; gap: 11px; }
.footer-col a{ font-size: 14px; color: var(--c-muted); }
.footer-col a:hover{ color: var(--c-gold); }
.footer-bottom{
  border-top:1px solid var(--c-line-soft); padding: 22px 0; display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap;
  font-size:13.5px; color: var(--c-muted);
}
.footer-bottom a.phone{ color: var(--c-gold); font-weight:600; display:inline-flex; align-items:center; gap:6px; }
.footer-bottom a.phone:hover{ color: var(--c-gold-bright); }
.footer-social{ display:flex; gap:10px; }
.footer-social a{ width:34px; height:34px; border:1px solid var(--c-line); border-radius:50%; display:flex; align-items:center; justify-content:center; font-size:13px; }
.footer-social a:hover{ border-color: var(--c-gold); color: var(--c-gold); }

/* =========================================================
   LOOKUP — Bảng tra cứu 2 cột kiểu chuyên gia
   Dùng chung cho: từ điển rượu vang, phụ kiện thời trang,
   xã giao quốc tế, framework kỹ năng sống...
   ========================================================= */
.lookup{
  display:grid; grid-template-columns: 300px minmax(0,1fr);
  border:1px solid var(--c-line); border-radius: var(--radius-lg);
  overflow:hidden; background: var(--c-bg-card); box-shadow: var(--shadow-card);
}
.lookup-sidebar{
  border-right:1px solid var(--c-line); background: var(--c-bg-alt);
  display:flex; flex-direction:column; max-height: 720px;
}
.lookup-search{ padding:16px; border-bottom:1px solid var(--c-line-soft); flex-shrink:0; }
.lookup-search input{
  width:100%; padding: 10px 14px; border-radius:8px;
  border:1px solid var(--c-line); background: var(--c-bg-card); color: var(--c-ivory);
  font-family: var(--font-body); font-size:13.5px;
}
.lookup-search input:focus{ outline:none; border-color: var(--c-gold); }
.lookup-count{ padding: 10px 16px 0; font-size:11.5px; color: var(--c-muted); letter-spacing:.04em; flex-shrink:0; }
.lookup-list{ overflow-y:auto; flex:1; padding: 8px; }
.lookup-group-label{ font-size:11px; letter-spacing:.12em; text-transform:uppercase; color: var(--c-gold-dim); padding: 14px 12px 6px; }
.lookup-item{
  display:block; width:100%; text-align:left; padding: 10px 12px; margin-bottom:2px;
  border-radius:8px; background:none; border:none; color: var(--c-ivory-dim);
  font-family: var(--font-body); font-size:14px; cursor:pointer; transition: all .15s ease;
}
.lookup-item:hover{ background: rgba(201,161,90,.07); color: var(--c-ivory); }
.lookup-item.active{ background: rgba(201,161,90,.15); color: var(--c-gold-bright); font-weight:600; }
.lookup-item .sub{ display:block; font-size:11.5px; color: var(--c-muted); margin-top:2px; font-weight:400; }
.lookup-item.active .sub{ color: var(--c-gold-dim); }
.lookup-empty-list{ padding: 24px 16px; color: var(--c-muted); font-size:13px; text-align:center; }

.lookup-detail{ padding: 36px; overflow-y:auto; max-height:720px; min-width: 0; }
.detail-head{ display:flex; justify-content:space-between; align-items:flex-start; gap:16px; flex-wrap:wrap; margin-bottom: 4px; }
.detail-title{ font-family: var(--font-display); font-size: 27px; color: var(--c-ivory); margin:0; }
.detail-sub{ font-size:13.5px; color: var(--c-muted); margin-top:4px; }
.detail-badge{
  font-size:11px; letter-spacing:.08em; text-transform:uppercase; padding: 5px 13px;
  border:1px solid var(--c-gold-dim); border-radius:999px; color: var(--c-gold); white-space:nowrap; flex-shrink:0;
}
.detail-lede{ margin-top:16px; font-size:14.5px; color: var(--c-ivory-dim); }

.spec-grid{ display:grid; grid-template-columns: repeat(2,1fr); gap:0; border-top:1px solid var(--c-line-soft); margin: 22px 0; }
.spec-row{ padding: 13px 18px 13px 0; border-bottom:1px solid var(--c-line-soft); }
.spec-row.full{ grid-column: 1/-1; padding-right:0; }
.spec-row .k{ font-size:10.5px; letter-spacing:.08em; text-transform:uppercase; color: var(--c-gold); margin-bottom:5px; }
.spec-row .v{ font-size:14px; color: var(--c-ivory-dim); line-height:1.6; }

.scale-row{ display:flex; align-items:center; gap:10px; }
.scale-row .scale-label{ font-size:13px; color: var(--c-ivory-dim); min-width:64px; flex-shrink:0; }
.scale-bar{ flex:1; height:5px; border-radius:999px; background: var(--c-line); position:relative; overflow:hidden; }
.scale-bar i{ position:absolute; left:0; top:0; bottom:0; background: linear-gradient(90deg, var(--c-gold-dim), var(--c-gold)); border-radius:999px; }

.lookup-empty{ display:flex; align-items:center; justify-content:center; min-height:400px; color: var(--c-muted); text-align:center; padding:40px; font-size:14.5px; }

@media (max-width: 900px){
  .lookup{ grid-template-columns: 1fr; }
  .lookup-sidebar{ border-right:none; border-bottom:1px solid var(--c-line); max-height: 280px; }
  .lookup-detail{ max-height:none; padding: 26px 20px; }
  .spec-grid{ grid-template-columns: 1fr; }
}

/* =========================================================
   WORLD CARDS — 4 thẻ lớn trên trang chủ
   ========================================================= */
.world-grid{ display:grid; grid-template-columns: repeat(2,1fr); gap: 26px; }
.world-card{
  position:relative; display:block; overflow:hidden;
  background: var(--c-bg-card); border:1px solid var(--c-line);
  border-radius: var(--radius-lg); padding: 38px 34px 32px;
  transition: transform .3s ease, border-color .3s ease, background .3s ease;
}
.world-card::after{
  content:''; position:absolute; right:-60px; top:-60px; width:200px; height:200px;
  background: radial-gradient(circle, rgba(201,161,90,.12), transparent 70%);
  transition: opacity .3s ease;
}
.world-card:hover{ transform: translateY(-6px); border-color: var(--c-gold-dim); background: var(--c-bg-card-hover); }
.wc-num{
  font-family: var(--font-display); font-size: 13px; color: var(--c-gold-dim);
  letter-spacing:.16em; display:block; margin-bottom: 14px;
}
.world-card h3{ font-size: 26px; margin-bottom: 12px; }
.world-card > p{ font-size: 15px; color: var(--c-muted); max-width: 400px; margin-bottom: 22px; }
.wc-topics{ display:flex; flex-wrap:wrap; gap:8px; margin-bottom: 24px; position:relative; }
.wc-topics span{
  font-size:12.5px; padding: 5px 13px; border:1px solid var(--c-line);
  border-radius:999px; color: var(--c-ivory-dim); background: rgba(255,255,255,.02);
}
.wc-go{
  display:inline-flex; align-items:center; gap:8px; font-size:14px;
  color: var(--c-gold); position:relative;
}
.world-card:hover .wc-go{ color: var(--c-gold-bright); }

/* =========================================================
   TOPIC CARDS — thẻ chủ đề trong trang hub
   ========================================================= */
.topic-grid{ display:grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
.topic-card{
  display:flex; flex-direction:column;
  background: var(--c-bg-card); border:1px solid var(--c-line);
  border-radius: var(--radius); padding: 28px 26px;
  transition: transform .26s ease, border-color .26s ease, background .26s ease;
}
.topic-card:hover{ transform: translateY(-5px); border-color: var(--c-gold-dim); background: var(--c-bg-card-hover); }
.tc-num{ font-family: var(--font-display); font-size:12.5px; color: var(--c-gold-dim); letter-spacing:.14em; margin-bottom: 12px; }
.topic-card h3{ font-size: 19px; margin-bottom: 10px; }
.topic-card p{ font-size: 14px; color: var(--c-muted); flex:1; margin-bottom: 18px; }
.tc-meta{
  display:flex; align-items:center; justify-content:space-between; gap:12px;
  padding-top: 16px; border-top:1px solid var(--c-line-soft);
  font-size:12.5px; color: var(--c-muted);
}
.tc-meta .go{ color: var(--c-gold); display:inline-flex; align-items:center; gap:6px; }

/* =========================================================
   DOC LAYOUT — trang chủ đề: mục lục dính bên trái + nội dung
   ========================================================= */
.doc-layout{ display:grid; grid-template-columns: 236px minmax(0,1fr); gap: 56px; align-items:start; }
.doc-body{ min-width: 0; }
.doc-nav{ position: sticky; top: calc(var(--header-h) + 28px); }
.doc-nav .dn-label{
  font-size:11px; letter-spacing:.16em; text-transform:uppercase;
  color: var(--c-gold); margin-bottom: 16px; padding-bottom: 12px;
  border-bottom:1px solid var(--c-line-soft);
}
.doc-nav ul{ display:flex; flex-direction:column; gap:2px; }
.doc-nav a{
  display:block; padding: 9px 14px; font-size:13.5px; color: var(--c-muted);
  border-left: 2px solid transparent; border-radius: 0 6px 6px 0;
  transition: all .2s ease;
}
.doc-nav a:hover{ color: var(--c-ivory); background: rgba(201,161,90,.05); }
.doc-nav a.active{ color: var(--c-gold-bright); border-left-color: var(--c-gold); background: rgba(201,161,90,.08); }
.doc-body > section{ padding: 0 0 72px; scroll-margin-top: calc(var(--header-h) + 24px); }
.doc-body > section:last-child{ padding-bottom: 20px; }
.doc-body h2{ font-size: 28px; margin-bottom: 6px; }
.doc-body .sec-lead{ color: var(--c-muted); font-size:15px; max-width: 700px; margin-bottom: 30px; }

/* =========================================================
   GLOBAL SEARCH — ô tra cứu nhanh toàn site
   ========================================================= */
.gsearch{ position:relative; max-width: 560px; margin: 0 auto; }
.gsearch input{
  width:100%; padding: 16px 52px 16px 22px; border-radius: 999px;
  background: var(--c-bg-card); border:1px solid var(--c-line);
  color: var(--c-ivory); font-family: var(--font-body); font-size:15px;
}
.gsearch input:focus{ outline:none; border-color: var(--c-gold); }
.gsearch input::placeholder{ color: var(--c-muted); }
.gsearch .gs-icon{ position:absolute; right:20px; top:50%; transform:translateY(-50%); width:18px; height:18px; color: var(--c-muted); pointer-events:none; }
.gs-results{
  position:absolute; top: calc(100% + 10px); left:0; right:0; z-index: 320;
  background: var(--c-bg-card); border:1px solid var(--c-line);
  border-radius: var(--radius); box-shadow: var(--shadow-soft);
  max-height: 360px; overflow-y:auto; padding: 8px; display:none; text-align:left;
}
.gs-results.open{ display:block; }
.gs-results a{ display:flex; justify-content:space-between; align-items:center; gap:14px; padding: 11px 14px; border-radius:8px; }
.gs-results a:hover, .gs-results a.cursor{ background: rgba(201,161,90,.09); }
.gs-results a .gs-name{ font-size:14px; color: var(--c-ivory); }
.gs-results a .gs-cat{ font-size:11.5px; color: var(--c-gold-dim); white-space:nowrap; }
.gs-empty{ padding: 22px; text-align:center; color: var(--c-muted); font-size:13.5px; }

@media (max-width: 980px){
  .world-grid{ grid-template-columns: 1fr; }
  .topic-grid{ grid-template-columns: repeat(2,1fr); }
  .doc-layout{ grid-template-columns: 1fr; gap: 0; }
  .doc-nav{ position: static; margin-bottom: 40px; padding-bottom: 24px; border-bottom:1px solid var(--c-line-soft); }
  .doc-nav ul{ flex-direction:row; flex-wrap:wrap; gap:8px; }
  .doc-nav a{ border-left:none; border:1px solid var(--c-line); border-radius:999px; padding: 8px 16px; }
  .doc-nav a.active{ border-color: var(--c-gold); }
  .doc-body > section{ padding-bottom: 56px; }
}
@media (max-width: 640px){
  .topic-grid{ grid-template-columns: 1fr; }
  .world-card{ padding: 30px 24px 26px; }
  .world-card h3{ font-size: 22px; }
  .doc-body h2{ font-size: 23px; }
}

/* =========================================================
   CHECKLIST — danh sách kiểm tra, in được / mang theo
   ========================================================= */
.checklist{
  background: var(--c-bg-card); border:1px solid var(--c-line);
  border-radius: var(--radius); padding: 28px 30px; margin: 26px 0;
}
.checklist-head{ display:flex; align-items:flex-start; justify-content:space-between; gap:16px; flex-wrap:wrap; margin-bottom: 20px; }
.checklist-head h4{ font-size:17px; margin:0; color: var(--c-ivory); }
.checklist-head .cl-sub{ font-size:13px; color: var(--c-muted); margin-top:4px; }
.btn-print{
  display:inline-flex; align-items:center; gap:7px; padding: 7px 16px;
  border:1px solid var(--c-gold-dim); border-radius:999px; background:none;
  color: var(--c-gold); font-family: var(--font-body); font-size:12.5px; cursor:pointer;
  transition: all .2s ease; flex-shrink:0;
}
.btn-print:hover{ background: rgba(201,161,90,.1); border-color: var(--c-gold); }
.checklist ul{ display:flex; flex-direction:column; gap:2px; }
.checklist li{
  display:flex; align-items:flex-start; gap:12px; padding: 10px 0;
  border-bottom:1px solid var(--c-line-soft); font-size:14.5px; color: var(--c-ivory-dim);
}
.checklist li:last-child{ border-bottom:none; }
.checklist li::before{
  content:''; flex-shrink:0; width:16px; height:16px; margin-top:4px;
  border:1.5px solid var(--c-gold-dim); border-radius:3px;
}
.checklist li b{ color: var(--c-ivory); font-weight:500; }
.cl-group{ font-size:11.5px; letter-spacing:.12em; text-transform:uppercase; color: var(--c-gold); margin: 20px 0 8px; }
.cl-group:first-of-type{ margin-top:0; }

/* =========================================================
   SCENARIO — tình huống thực tế, đáp án ẩn để tự nghĩ trước
   ========================================================= */
.scenario{
  border:1px solid var(--c-line); border-left: 3px solid var(--c-gold);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--c-bg-card); margin-bottom: 14px; overflow:hidden;
}
.scenario summary{
  list-style:none; cursor:pointer; padding: 20px 24px;
  display:flex; align-items:flex-start; justify-content:space-between; gap:16px;
}
.scenario summary::-webkit-details-marker{ display:none; }
.scenario .sc-q{ font-size:15px; color: var(--c-ivory); line-height:1.6; }
.scenario .sc-q .sc-tag{
  display:block; font-size:11px; letter-spacing:.1em; text-transform:uppercase;
  color: var(--c-gold-dim); margin-bottom:7px;
}
.scenario .sc-toggle{
  flex-shrink:0; font-size:12px; color: var(--c-gold); border:1px solid var(--c-gold-dim);
  border-radius:999px; padding: 5px 14px; white-space:nowrap;
}
.scenario[open] .sc-toggle{ background: rgba(201,161,90,.12); }
.scenario .sc-a{ padding: 0 24px 22px; font-size:14.5px; color: var(--c-ivory-dim); }
.scenario .sc-a p{ margin: 0 0 10px; }
.scenario .sc-a p:last-child{ margin-bottom:0; }
.scenario .sc-a b{ color: var(--c-gold-bright); }

/* =========================================================
   PATH — lộ trình học theo bước
   ========================================================= */
.path-step{
  display:grid; grid-template-columns: 52px minmax(0,1fr); gap: 22px;
  padding: 26px 0; border-bottom:1px solid var(--c-line-soft);
}
.path-step:last-child{ border-bottom:none; }
.path-num{
  width:52px; height:52px; border-radius:50%; border:1px solid var(--c-gold-dim);
  display:flex; align-items:center; justify-content:center;
  font-family: var(--font-display); font-size:19px; color: var(--c-gold);
}
.path-body h4{ font-size:17px; margin-bottom:8px; }
.path-body p{ font-size:14.5px; color: var(--c-muted); margin-bottom:12px; }
.path-links{ display:flex; gap:10px; flex-wrap:wrap; }
.path-links a{
  font-size:13px; padding: 7px 15px; border:1px solid var(--c-line);
  border-radius:999px; color: var(--c-ivory-dim);
}
.path-links a:hover{ border-color: var(--c-gold); color: var(--c-gold); }

@media print{
  #site-header, #site-footer, .breadcrumb, .doc-nav, #backToTop, .mobile-drawer,
  .page-hero, .btn-print, .scenario, .lookup{ display:none !important; }
  body{ background:#fff; color:#000; padding-top:0; }
  .checklist{ border:1px solid #999; background:#fff; page-break-inside: avoid; }
  .checklist-head h4, .checklist li b{ color:#000; }
  .checklist li{ color:#222; border-bottom:1px solid #ddd; }
  .checklist li::before{ border-color:#666; }
  .cl-group{ color:#555; }
}

@media (max-width: 640px){
  .checklist{ padding: 22px 20px; }
  .path-step{ grid-template-columns: 42px minmax(0,1fr); gap: 16px; }
  .path-num{ width:42px; height:42px; font-size:16px; }
  .scenario summary{ padding: 16px 18px; flex-direction: column; }
  .scenario .sc-a{ padding: 0 18px 18px; }
}

/* Back to top */
#backToTop{
  position: fixed; right: 24px; bottom: 24px; z-index: 400;
  width: 46px; height:46px; border-radius:50%; background: var(--c-gold); color:#161104;
  display:flex; align-items:center; justify-content:center; border:none; cursor:pointer;
  box-shadow: var(--shadow-card); opacity:0; visibility:hidden; transform: translateY(10px);
  transition: all .3s ease;
}
#backToTop.show{ opacity:1; visibility:visible; transform:none; }

/* Search box (simple client-side filter, used on category pages) */
.search-box{ position:relative; max-width: 420px; margin: 0 auto 46px; }
.search-box input{
  width:100%; padding: 14px 46px 14px 18px; border-radius:999px;
  background: var(--c-bg-card); border:1px solid var(--c-line); color: var(--c-ivory);
  font-family: var(--font-body); font-size:14.5px;
}
.search-box input:focus{ outline:none; border-color: var(--c-gold); }
.search-box svg{ position:absolute; right:16px; top:50%; transform:translateY(-50%); width:16px; height:16px; color: var(--c-muted); }

/* Utility */
.mt-0{margin-top:0} .mb-0{margin-bottom:0}
.text-muted{ color: var(--c-muted); }
.center{ text-align:center; }

/* =============== RESPONSIVE =============== */
@media (max-width: 980px){
  .main-nav{ display:none; }
  .burger{ display:flex; }
  .hero-grid{ grid-template-columns: 1fr; }
  .hero-visual{ max-width: 380px; margin: 0 auto; }
  .hero{
    min-height: 0;
    background:
      linear-gradient(180deg,
        rgba(12,12,13,.82) 0%,
        rgba(12,12,13,.86) 45%,
        rgba(12,12,13,.94) 100%),
      radial-gradient(700px 380px at 10% 0%, rgba(201,161,90,.10), transparent 62%),
      url("../img/hero.jpg") 68% top / cover no-repeat,
      var(--c-bg);
  }
  .cat-grid{ grid-template-columns: repeat(2,1fr); }
  .grid-3{ grid-template-columns: repeat(2,1fr); }
  .footer-grid{ grid-template-columns: 1fr 1fr; }
  .vs-wrap{ grid-template-columns: 1fr; }
  .vs-mid{ width:100%; padding: 10px 0; }
  .result-grid{ grid-template-columns: 1fr; }
}
@media (max-width: 640px){
  section{ padding: 60px 0; }
  .hero{ padding: 80px 0 56px; }
  .cat-grid{ grid-template-columns: 1fr; }
  .grid-3, .grid-2{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr 1fr; gap: 28px; }
  .call-chip span{ display:none; }
  .header-actions .btn-outline{ display:none; }
  .vs-wrap{ grid-template-columns: 1fr; }
  .container{ padding: 0 18px; }
  .header-inner{ padding: 0 18px; gap: 12px; }
  #site-header .brand{ flex-shrink: 1; min-width: 0; gap: 10px; }
  #site-header .brand img{ height: 34px; }
  #site-header .brand-text{ min-width: 0; }
  #site-header .brand-text .name{ font-size: 15px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  #site-header .brand-text .tag{ display: none; }
}