:root {
  --gold:        #B8860B;
  --gold-l:      #DAA520;
  --gold-bg:     #FFF8E7;
  --primary:     #1A3C5E;
  --primary-dk:  #0F2740;
  --white:       #FFFFFF;
  --bg:          #F5F7FA;
  --surface:     #FFFFFF;
  --border:      #E2E8F0;
  --text:        #1E293B;
  --text-2:      #475569;
  --text-3:      #94A3B8;
  --green:       #16A34A;
  --red:         #DC2626;
  --radius:      10px;
  --radius-lg:   16px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: #F5F7FA;
  color: #1E293B;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img  { max-width: 100%; height: auto; display: block; }
a    { color: var(--primary); text-decoration: none; }
a:hover { color: var(--gold-l); }

/* ── Base Layout ───────────────────────────────────────────────────── */
.zc-container  { max-width: 1160px; margin: 0 auto; padding: 0 20px; }
.zc-layout     { display: grid; grid-template-columns: 1fr 300px; gap: 28px; align-items: start; }
.zc-layout__side { position: sticky; top: 20px; }
.zc-main       { min-height: 60vh; }
.zc-main-wrap  { padding: 28px 0 60px; background: #F5F7FA; }

/* ── Header / Nav ──────────────────────────────────────────────────── */
.zc-header {
  background: #FFFFFF;
  border-bottom: 1px solid #E2E8F0;
  position: sticky; top: 0; z-index: 100;
  box-shadow: 0 1px 4px rgba(0,0,0,.06);
}
.zc-header__inner  { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 24px; }
.zc-logo           { font-size: 1.1rem; font-weight: 800; color: var(--primary); display: flex; align-items: center; gap: 8px; }
.zc-logo__icon     { color: var(--gold-l); font-size: 1.2rem; }
.zc-logo:hover     { color: var(--primary); }
.zc-nav            { display: flex; align-items: center; gap: 4px; }
.zc-nav a          { color: #374151; font-size: .875rem; font-weight: 500; padding: 6px 12px; border-radius: 8px; transition: all .15s; }
.zc-nav a:hover    { background: #F1F5F9; color: var(--primary); }
.zc-nav a.active   { background: var(--primary); color: #fff; }
.zc-nav .zc-dropdown { position: relative; }
.zc-nav .zc-dropdown-menu {
  display: none; position: absolute; top: 100%; left: 0; z-index: 200;
  background: #fff; border: 1px solid #E2E8F0; border-radius: 10px;
  padding: 6px; min-width: 180px; box-shadow: 0 4px 16px rgba(0,0,0,.1);
}
.zc-nav .zc-dropdown:hover .zc-dropdown-menu { display: block; }
.zc-nav .zc-dropdown-menu a { display: block; padding: 8px 12px; border-radius: 7px; color: #374151; font-size: .85rem; }
.zc-nav .zc-dropdown-menu a:hover { background: #F8FAFC; color: var(--primary); }

/* ── Hero ──────────────────────────────────────────────────────────── */
.zc-hero {
  background: #1A3C5E;
  padding: 36px 0 0;
}
.zc-hero__inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 28px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}
.zc-hero__left      { flex: 1; min-width: 260px; }
.zc-hero__eyebrow   { font-size: .78rem; color: #94B8D4; margin-bottom: 10px; font-weight: 500; }
.zc-hero__title     { font-size: clamp(1.3rem,2.8vw,1.9rem); font-weight: 800; color: #fff; line-height: 1.25; margin: 0 0 14px; }
.zc-hero__desc      { font-size: .88rem; color: #BAD0E4; line-height: 1.75; margin: 0 0 18px; }
.zc-hero__live-tag  {
  display: inline-flex; align-items: center; gap: 7px;
  background: #DAA520; color: #fff;
  padding: 5px 16px; border-radius: 100px;
  font-size: .72rem; font-weight: 700; letter-spacing: .5px;
}
.zc-hero__price-box {
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 16px;
  padding: 24px 30px;
  text-align: center;
  min-width: 210px;
  flex-shrink: 0;
}
.zc-hero__price-label { font-size: .72rem; color: #94B8D4; letter-spacing: 1.5px; text-transform: uppercase; margin-bottom: 8px; }
.zc-hero__price-val   { font-size: clamp(1.7rem,3vw,2.3rem); font-weight: 900; color: #DAA520; letter-spacing: -1px; line-height: 1.1; }
.zc-hero__price-unit  { font-size: .75rem; color: #94B8D4; margin-top: 6px; }
.zc-hero__price-chg   { margin-top: 10px; font-size: .78rem; color: #BAD0E4; }

/* ── Top 4 cards ───────────────────────────────────────────────────── */
.zc-top4-grid {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 12px;
  padding-bottom: 30px;
}
.zc-top4-card {
  background: rgba(255,255,255,.09);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 12px;
  padding: 18px 14px;
  text-align: center;
  transition: background .2s;
}
.zc-top4-card:hover { background: rgba(255,255,255,.16); }
.zc-top4-badge {
  display: inline-block;
  background: #DAA520; color: #fff;
  font-size: .7rem; font-weight: 700;
  padding: 3px 12px; border-radius: 100px;
  margin-bottom: 12px; letter-spacing: .5px; white-space: nowrap;
}
.zc-top4-price { font-size: clamp(1.05rem,2vw,1.45rem); font-weight: 800; color: #fff; }

/* ── Cards ─────────────────────────────────────────────────────────── */
.zc-card {
  background: #fff;
  border: 1px solid #E8ECF0;
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 20px;
  box-shadow: 0 1px 3px rgba(0,0,0,.05);
}
.zc-card:last-child { margin-bottom: 0; }
.zc-card__head { padding: 16px 20px 14px; border-bottom: 1px solid #F1F5F9; background: #FAFBFC; }
.zc-card__title { font-size: 1rem; font-weight: 700; color: #1A3C5E; margin: 0; }
.zc-card--content { padding: 20px 24px; }
.zc-card--content h2 { font-size: 1.1rem; font-weight: 700; color: var(--primary); margin-bottom: 12px; }
.zc-card--content h3 { font-size: .95rem; font-weight: 600; color: var(--text); margin: 18px 0 8px; }
.zc-card--content p  { color: var(--text-2); margin-bottom: 12px; line-height: 1.75; font-size: .9rem; }
.zc-card--content ul { padding-left: 20px; color: var(--text-2); }
.zc-card--content ul li { margin-bottom: 6px; }

/* ── Page titles (karat/city) ──────────────────────────────────────── */
.zc-page-title { font-size: clamp(1.15rem,2.5vw,1.6rem); font-weight: 800; color: var(--primary); line-height: 1.3; padding: 20px 20px 10px; }
.zc-page-intro { font-size: .875rem; color: var(--text-2); padding: 0 20px 16px; line-height: 1.7; }

/* ── Tables ────────────────────────────────────────────────────────── */
.zc-table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.zc-table { width: 100%; border-collapse: collapse; }
.zc-table caption { text-align: left; font-size: .82rem; color: var(--text-3); padding: 12px 16px 8px; }
.zc-table th {
  background: #1A3C5E; color: #DAA520;
  font-size: .75rem; letter-spacing: .8px; text-transform: uppercase;
  padding: 12px 16px; text-align: left; font-weight: 600;
}
.zc-table td { padding: 13px 16px; border-bottom: 1px solid #F1F5F9; color: var(--text); vertical-align: middle; font-size: .9rem; }
.zc-table tbody tr:last-child td { border-bottom: none; }
.zc-table tbody tr:hover td { background: #FFFBF0; }
.zc-table a { color: var(--primary); font-weight: 500; }
.zc-table a:hover { color: var(--gold-l); }
.zc-price-cell { color: #B8860B !important; font-weight: 600 !important; }
.zc-purity-tag { display: inline-block; margin-left: 8px; font-size: .68rem; color: #94A3B8; background: #F1F5F9; padding: 1px 7px; border-radius: 100px; font-weight: 400; }

/* ── International bar ─────────────────────────────────────────────── */
.zc-intl-bar {
  display: flex; justify-content: space-between; align-items: center;
  background: #1A3C5E; color: #BAD0E4;
  padding: 12px 20px; font-size: .85rem;
}
.zc-intl-bar strong { color: #DAA520; font-size: 1rem; }

/* ── Hero rate boxes (karat pages) ────────────────────────────────── */
.zc-hero-rate { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; margin: 0 20px 20px; }
.zc-hero-rate__item { background: #F8FAFC; border: 1px solid #E2E8F0; border-radius: 12px; padding: 20px; text-align: center; }
.zc-hero-rate__label { display: block; font-size: .75rem; color: var(--text-3); font-weight: 600; text-transform: uppercase; letter-spacing: .05em; margin-bottom: 8px; }
.zc-hero-rate__value { display: block; font-size: 1.5rem; font-weight: 800; color: var(--primary); }
.zc-hero-rate__change { display: block; font-size: .82rem; font-weight: 600; margin-top: 6px; }
.zc-hero-rate__change.up   { color: var(--green); }
.zc-hero-rate__change.down { color: var(--red); }
.zc-hero-rate__change.flat { color: var(--text-3); }

/* ── Chart ─────────────────────────────────────────────────────────── */
.zc-chart-wrap { padding: 16px 20px 20px; }
.zc-chart-tab { background: #F1F5F9; border: 1px solid #E2E8F0; border-radius: 7px; padding: 5px 14px; font-size: .8rem; font-weight: 600; cursor: pointer; color: var(--text-2); transition: all .15s; }
.zc-chart-tab.active, .zc-chart-tab:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ── SEO Text ──────────────────────────────────────────────────────── */
.zc-seo-text { padding: 20px 24px 24px; }
.zc-seo-text h2 { font-size: 1.1rem; color: var(--primary); font-weight: 700; margin: 0 0 10px; }
.zc-seo-text h3 { font-size: .95rem; color: var(--primary); font-weight: 600; margin: 18px 0 8px; }
.zc-seo-text p  { font-size: .875rem; color: var(--text-2); line-height: 1.75; }
.zc-seo-text p+p { margin-top: 10px; }
.zc-seo-text a  { color: var(--primary); font-weight: 500; text-decoration: underline; }

/* ── Cities grid ───────────────────────────────────────────────────── */
.zc-cities-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill,minmax(155px,1fr));
  gap: 8px; padding: 16px 20px 20px;
}
.zc-city-link {
  display: flex; justify-content: space-between; align-items: center;
  background: #F8FAFC; border: 1px solid #E2E8F0; border-radius: 8px;
  padding: 10px 14px; color: var(--primary);
  font-size: .85rem; font-weight: 500; text-decoration: none;
  transition: all .18s ease;
}
.zc-city-link:hover { background: #FFF8E7; border-color: #DAA520; color: #B8860B; }
.zc-city-arrow { color: #CBD5E1; font-size: .8rem; flex-shrink: 0; }
.zc-city-link:hover .zc-city-arrow { color: #DAA520; }
.zc-city-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ── Sidebar changes ───────────────────────────────────────────────── */
.zc-side-changes { display: flex; flex-direction: column; }
.zc-side-chg-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 11px 20px; border-bottom: 1px solid #F1F5F9;
  font-size: .875rem; color: var(--text);
}
.zc-side-chg-row:last-child { border-bottom: none; }
.zc-side-price { font-weight: 600; color: var(--primary); margin-right: 6px; }

/* ── Badges ────────────────────────────────────────────────────────── */
.zc-badge-up   { background:#DCFCE7; color:#16A34A; padding:2px 8px; border-radius:6px; font-size:.75rem; font-weight:600; white-space:nowrap; display:inline-block; }
.zc-badge-down { background:#FEE2E2; color:#DC2626; padding:2px 8px; border-radius:6px; font-size:.75rem; font-weight:600; white-space:nowrap; display:inline-block; }
.zc-badge-flat { background:#F1F5F9; color:#64748B; padding:2px 8px; border-radius:6px; font-size:.75rem; white-space:nowrap; display:inline-block; }

/* ── Live dot ──────────────────────────────────────────────────────── */
.zc-live-dot {
  width: 7px; height: 7px; background: #4ADE80; border-radius: 50%;
  animation: zcPulse 2s ease-in-out infinite; display: inline-block; vertical-align: middle;
}
@keyframes zcPulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.4;transform:scale(.7)} }

/* ── Alerts ────────────────────────────────────────────────────────── */
.zc-alert     { padding: 14px 20px; font-size: .875rem; }
.zc-alert--info { background: #EFF6FF; color: #1D4ED8; border-top: 3px solid #3B82F6; }
.zc-alert--warn { background: #FFFBEB; color: #92400E; border-top: 3px solid #F59E0B; }
.zc-alert--ok   { background: #F0FDF4; color: #166534; border-top: 3px solid #22C55E; }

/* ── Breadcrumb ────────────────────────────────────────────────────── */
.zc-breadcrumb { font-size: .8rem; color: var(--text-3); padding: 10px 0; }
.zc-breadcrumb a { color: var(--text-2); }
.zc-breadcrumb a:hover { color: var(--primary); }

/* ── Buttons ───────────────────────────────────────────────────────── */
.zc-btn         { display: inline-flex; align-items: center; gap: 6px; padding: 9px 18px; border-radius: 8px; font-size: .875rem; font-weight: 600; cursor: pointer; transition: all .18s; border: none; }
.zc-btn--primary { background: var(--primary); color: #fff; }
.zc-btn--primary:hover { background: #0F2740; color: #fff; }
.zc-btn--gold   { background: #DAA520; color: #fff; }
.zc-btn--gold:hover { background: #B8860B; color: #fff; }
.zc-btn--outline { background: transparent; color: var(--primary); border: 1px solid var(--border); }
.zc-btn--outline:hover { border-color: var(--primary); background: #F8FAFC; }

/* ── Footer ────────────────────────────────────────────────────────── */
.zc-footer { background: #1A3C5E; color: #BAD0E4; padding: 40px 0 24px; margin-top: 40px; }
.zc-footer__grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(200px,1fr)); gap: 32px; margin-bottom: 28px; }
.zc-footer h4 { color: #fff; font-size: .9rem; font-weight: 700; margin-bottom: 14px; }
.zc-footer a  { color: #94B8D4; font-size: .85rem; display: block; margin-bottom: 8px; transition: color .15s; }
.zc-footer a:hover { color: #DAA520; }
.zc-footer__copy { border-top: 1px solid rgba(255,255,255,.1); padding-top: 20px; text-align: center; font-size: .8rem; color: rgba(255,255,255,.4); }

/* ── Pagination ────────────────────────────────────────────────────── */
.zc-pagination { display: flex; justify-content: center; gap: 6px; padding: 20px 0; }
.zc-pagination a, .zc-pagination span { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 8px; font-size: .875rem; font-weight: 500; border: 1px solid #E2E8F0; color: var(--text); }
.zc-pagination a:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.zc-pagination .current { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ── Responsive ────────────────────────────────────────────────────── */
@media (max-width: 960px) {
  .zc-layout     { grid-template-columns: 1fr; }
  .zc-layout__side { position: static; }
}
@media (max-width: 700px) {
  .zc-top4-grid  { grid-template-columns: repeat(2,1fr); }
  .zc-cities-grid { grid-template-columns: repeat(2,1fr); }
  .zc-hero__inner { flex-direction: column; }
  .zc-hero__price-box { width: 100%; }
  .zc-hero-rate  { grid-template-columns: repeat(2,1fr); }
  .zc-nav        { display: none; }
}
@media (max-width: 420px) {
  .zc-top4-price { font-size: .95rem; }
  .zc-top4-badge { font-size: .65rem; padding: 2px 8px; }
  .zc-hero-rate  { grid-template-columns: 1fr; }
}

/* ── Top Bar ───────────────────────────────────────────────────────── */
.zc-topbar {
  background: #0F2740;
  color: #94B8D4;
  font-size: .78rem;
  padding: 7px 0;
}
.zc-topbar .zc-container { display: flex; align-items: center; gap: 12px; }
.zc-topbar__date  { font-weight: 500; color: #BAD0E4; }
.zc-topbar__right { margin-left: auto; display: flex; align-items: center; gap: 6px; color: #4ADE80; font-weight: 600; font-size: .75rem; }
.zc-dot { width: 7px; height: 7px; background: #4ADE80; border-radius: 50%; animation: zcPulse 2s ease-in-out infinite; display: inline-block; }

/* ── Header logo ───────────────────────────────────────────────────── */
.zc-header__logo { font-size: 1.15rem; font-weight: 800; color: var(--primary); display: flex; align-items: center; gap: 8px; }
.zc-header__logo img { height: 36px; width: auto; }
.zc-header__logo-text { color: var(--primary); }

/* ── Skip link (accessibility) ─────────────────────────────────────── */
.zc-skip-link {
  position: absolute; top: -40px; left: 0;
  background: var(--primary); color: #fff;
  padding: 8px 16px; z-index: 9999; border-radius: 0 0 8px 0;
  transition: top .2s;
}
.zc-skip-link:focus { top: 0; }

/* ── Navigation ────────────────────────────────────────────────────── */
.zc-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
  padding: 0; margin: 0;
}
.zc-nav__link {
  display: flex;
  align-items: center;
  gap: 4px;
  color: #374151;
  font-size: .875rem;
  font-weight: 500;
  padding: 7px 12px;
  border-radius: 8px;
  transition: all .15s;
  white-space: nowrap;
  text-decoration: none;
}
.zc-nav__link:hover,
.zc-nav__link.active { background: #F1F5F9; color: var(--primary); }
.zc-chevron { transition: transform .2s; flex-shrink: 0; }

/* Dropdown */
.zc-nav__dropdown { position: relative; }
.zc-nav__submenu {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: 500;
  background: #fff;
  border: 1px solid #E2E8F0;
  border-radius: 10px;
  padding: 6px;
  min-width: 200px;
  box-shadow: 0 8px 24px rgba(0,0,0,.1);
  list-style: none;
}
.zc-nav__dropdown:hover .zc-nav__submenu,
.zc-nav__dropdown.open  .zc-nav__submenu { display: block; }
.zc-nav__dropdown:hover .zc-chevron      { transform: rotate(180deg); }
.zc-nav__submenu li a {
  display: block;
  padding: 9px 14px;
  border-radius: 7px;
  color: #374151;
  font-size: .85rem;
  font-weight: 500;
  text-decoration: none;
  transition: background .12s;
}
.zc-nav__submenu li a:hover { background: #F8FAFC; color: var(--primary); }

/* Hamburger toggle */
.zc-nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px; height: 36px;
  background: none; border: none;
  cursor: pointer; padding: 4px;
  border-radius: 6px;
}
.zc-nav-toggle span {
  display: block; width: 22px; height: 2px;
  background: #374151; border-radius: 2px;
  transition: all .2s;
}

/* Logo icon */
.zc-logo-icon { color: var(--gold-l); font-size: 1.1rem; }
.zc-header__logo {
  font-size: 1.15rem; font-weight: 800; color: var(--primary);
  display: flex; align-items: center; gap: 8px; text-decoration: none;
  flex-shrink: 0;
}
.zc-header__logo:hover { color: var(--primary); }

/* Footer CSS proper */
.zc-footer { background: #1A3C5E; color: #BAD0E4; padding: 48px 0 0; margin-top: 40px; }
.zc-footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.zc-footer__col {}
.zc-footer__heading { color: #fff; font-size: .95rem; font-weight: 700; margin-bottom: 16px; }
.zc-footer__text { color: #94B8D4; font-size: .85rem; line-height: 1.7; }
.zc-footer__links { list-style: none; padding: 0; margin: 0; }
.zc-footer__links li { margin-bottom: 8px; }
.zc-footer__links a { color: #94B8D4; font-size: .85rem; text-decoration: none; transition: color .15s; }
.zc-footer__links a:hover { color: #DAA520; }
.zc-footer__social { display: flex; gap: 10px; margin-top: 16px; }
.zc-footer__social a {
  display: flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 8px;
  background: rgba(255,255,255,.08); color: #94B8D4;
  transition: all .15s;
}
.zc-footer__social a:hover { background: #DAA520; color: #fff; }
.zc-footer__bottom {
  padding: 18px 0;
  text-align: center;
}
.zc-footer__copy { color: rgba(255,255,255,.35); font-size: .8rem; }

/* Breadcrumb wrap */
.zc-breadcrumb-wrap { background: #fff; border-bottom: 1px solid #F1F5F9; padding: 10px 0; }
.zc-breadcrumb { display: flex; align-items: center; gap: 6px; list-style: none; padding: 0; margin: 0; font-size: .78rem; color: #94A3B8; }
.zc-breadcrumb__item { display: flex; align-items: center; gap: 6px; }
.zc-breadcrumb__item:not(:last-child)::after { content: '/'; color: #CBD5E1; }
.zc-breadcrumb a { color: #475569; }
.zc-breadcrumb a:hover { color: var(--primary); }

/* Topbar */
.zc-topbar { background: #0F2740; color: #94B8D4; font-size: .78rem; padding: 7px 0; }
.zc-topbar .zc-container { display: flex; align-items: center; gap: 12px; }
.zc-topbar__date { font-weight: 500; color: #BAD0E4; }
.zc-topbar__right { margin-left: auto; display: flex; align-items: center; gap: 6px; color: #4ADE80; font-weight: 600; font-size: .75rem; }
.zc-dot { width: 7px; height: 7px; background: #4ADE80; border-radius: 50%; animation: zcPulse 2s ease-in-out infinite; display: inline-block; }

/* ── Responsive nav ─────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .zc-nav-toggle { display: flex; }
  .zc-nav {
    display: none;
    position: fixed;
    top: 60px; left: 0; right: 0;
    background: #fff;
    border-top: 1px solid #E2E8F0;
    padding: 12px;
    box-shadow: 0 8px 24px rgba(0,0,0,.12);
    z-index: 400;
    max-height: calc(100vh - 60px);
    overflow-y: auto;
  }
  .zc-nav.open { display: block; }
  .zc-nav__list { flex-direction: column; align-items: stretch; gap: 2px; }
  .zc-nav__link { padding: 10px 14px; border-radius: 8px; }
  .zc-nav__submenu {
    position: static;
    box-shadow: none;
    border: none;
    background: #F8FAFC;
    border-radius: 8px;
    margin-top: 4px;
    padding: 6px 0;
    display: none;
  }
  .zc-nav__dropdown.open .zc-nav__submenu { display: block; }
  .zc-footer__grid { grid-template-columns: 1fr 1fr; gap: 28px; }
}
@media (max-width: 600px) {
  .zc-footer__grid { grid-template-columns: 1fr; gap: 24px; }
}