/* ==========================================================================
   Page-specific layout: hero, product detail, cart, checkout, about, contact
   ========================================================================== */

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 110px 0 100px;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-copy h1 { margin-bottom: 20px; }
.hero-copy h1 .hl { color: var(--accent); }
.hero-lede { font-size: 1.1rem; max-width: 46ch; margin-bottom: 32px; }
.hero-cta-row { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; }

.hero-stats { display: flex; gap: 36px; flex-wrap: wrap; }
.hero-stat .num { font-family: var(--font-mono); font-size: 1.8rem; font-weight: 600; color: var(--text-primary); display: block; }
.hero-stat .label { font-size: 0.78rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.08em; }

.hero-visual {
  position: relative;
  height: 460px;
  display: flex;
  align-items: center;
  justify-content: center;
  perspective: 1000px;
}

.hero-visual .hero-orb.o1 { width: 320px; height: 320px; background: radial-gradient(circle, rgba(193, 232, 255, 0.35), transparent 70%); top: -40px; right: -40px; }
.hero-visual .hero-orb.o2 { width: 240px; height: 240px; background: radial-gradient(circle, rgba(201, 161, 90, 0.25), transparent 70%); bottom: -20px; left: -20px; animation-delay: -6s; }

.helix-svg { width: 260px; height: 420px; position: relative; z-index: 1; filter: drop-shadow(0 0 30px rgba(193, 232, 255, 0.25)); }

/* ---------- Catalog page banner (index.html) ---------- */
.catalog-banner {
  position: relative;
  height: 340px;
  overflow: hidden;
  background: var(--void-navy);
}

.catalog-banner-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 78% 45%;
}

.catalog-banner-fade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, var(--void-navy) 0%, rgba(2, 16, 36, 0.92) 30%, rgba(2, 16, 36, 0.45) 55%, transparent 78%),
    linear-gradient(180deg, rgba(2, 16, 36, 0.35) 0%, transparent 30%, transparent 70%, rgba(2, 16, 36, 0.6) 100%);
}

.catalog-banner-content {
  position: relative;
  z-index: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.catalog-banner-content h1 { color: var(--ice-blue); margin-top: 14px; line-height: 1.05; }
.catalog-banner-content .eyebrow { color: var(--lab-gold-bright); margin-top: -46px; line-height: 1.4; display: inline-block; }

:root[data-theme="light"] .catalog-banner { background: var(--bg); }
:root[data-theme="light"] .catalog-banner-fade {
  background:
    linear-gradient(90deg, var(--bg) 0%, rgba(240, 246, 252, 0.94) 30%, rgba(240, 246, 252, 0.55) 55%, transparent 78%),
    linear-gradient(180deg, rgba(240, 246, 252, 0.3) 0%, transparent 30%, transparent 70%, rgba(240, 246, 252, 0.55) 100%);
}
:root[data-theme="light"] .catalog-banner-content h1 { color: var(--void-navy); }
:root[data-theme="light"] .catalog-banner-content .eyebrow { color: var(--lab-gold-deep); font-weight: 700; }

:root[data-palette="bloom"][data-theme="light"] .catalog-banner-fade {
  background:
    linear-gradient(90deg, var(--bg) 0%, rgba(251, 241, 238, 0.94) 30%, rgba(251, 241, 238, 0.55) 55%, transparent 78%),
    linear-gradient(180deg, rgba(251, 241, 238, 0.3) 0%, transparent 30%, transparent 70%, rgba(251, 241, 238, 0.55) 100%);
}

:root[data-palette="ember"][data-theme="light"] .catalog-banner-fade {
  background:
    linear-gradient(90deg, var(--bg) 0%, rgba(251, 238, 233, 0.94) 30%, rgba(251, 238, 233, 0.55) 55%, transparent 78%),
    linear-gradient(180deg, rgba(251, 238, 233, 0.3) 0%, transparent 30%, transparent 70%, rgba(251, 238, 233, 0.55) 100%);
}

:root[data-palette="forest"][data-theme="light"] .catalog-banner-fade {
  background:
    linear-gradient(90deg, var(--bg) 0%, rgba(241, 248, 242, 0.94) 30%, rgba(241, 248, 242, 0.55) 55%, transparent 78%),
    linear-gradient(180deg, rgba(241, 248, 242, 0.3) 0%, transparent 30%, transparent 70%, rgba(241, 248, 242, 0.55) 100%);
}

:root[data-palette="tide"][data-theme="light"] .catalog-banner-fade {
  background:
    linear-gradient(90deg, var(--bg) 0%, rgba(238, 248, 249, 0.94) 30%, rgba(238, 248, 249, 0.55) 55%, transparent 78%),
    linear-gradient(180deg, rgba(238, 248, 249, 0.3) 0%, transparent 30%, transparent 70%, rgba(238, 248, 249, 0.55) 100%);
}

:root[data-palette="crimson"][data-theme="light"] .catalog-banner-fade {
  background:
    linear-gradient(90deg, var(--bg) 0%, rgba(253, 240, 239, 0.94) 30%, rgba(253, 240, 239, 0.55) 55%, transparent 78%),
    linear-gradient(180deg, rgba(253, 240, 239, 0.3) 0%, transparent 30%, transparent 70%, rgba(253, 240, 239, 0.55) 100%);
}

:root[data-palette="royal"][data-theme="light"] .catalog-banner-fade {
  background:
    linear-gradient(90deg, var(--bg) 0%, rgba(241, 238, 252, 0.94) 30%, rgba(241, 238, 252, 0.55) 55%, transparent 78%),
    linear-gradient(180deg, rgba(241, 238, 252, 0.3) 0%, transparent 30%, transparent 70%, rgba(241, 238, 252, 0.55) 100%);
}

:root[data-palette="papaya"][data-theme="light"] .catalog-banner-fade {
  background:
    linear-gradient(90deg, var(--bg) 0%, rgba(255, 250, 240, 0.94) 30%, rgba(255, 250, 240, 0.55) 55%, transparent 78%),
    linear-gradient(180deg, rgba(255, 250, 240, 0.3) 0%, transparent 30%, transparent 70%, rgba(255, 250, 240, 0.55) 100%);
}

:root[data-palette="orbit"][data-theme="light"] .catalog-banner-fade {
  background:
    linear-gradient(90deg, var(--bg) 0%, rgba(238, 244, 252, 0.94) 30%, rgba(238, 244, 252, 0.55) 55%, transparent 78%),
    linear-gradient(180deg, rgba(238, 244, 252, 0.3) 0%, transparent 30%, transparent 70%, rgba(238, 244, 252, 0.55) 100%);
}

:root[data-palette="neoncyan"][data-theme="light"] .catalog-banner-fade {
  background:
    linear-gradient(90deg, var(--bg) 0%, rgba(234, 252, 255, 0.94) 30%, rgba(234, 252, 255, 0.55) 55%, transparent 78%),
    linear-gradient(180deg, rgba(234, 252, 255, 0.3) 0%, transparent 30%, transparent 70%, rgba(234, 252, 255, 0.55) 100%);
}

:root[data-palette="lakers"][data-theme="light"] .catalog-banner-fade {
  background:
    linear-gradient(90deg, var(--bg) 0%, rgba(246, 240, 252, 0.94) 30%, rgba(246, 240, 252, 0.55) 55%, transparent 78%),
    linear-gradient(180deg, rgba(246, 240, 252, 0.3) 0%, transparent 30%, transparent 70%, rgba(246, 240, 252, 0.55) 100%);
}

:root[data-palette="aurora"][data-theme="light"] .catalog-banner-fade {
  background:
    linear-gradient(90deg, var(--bg) 0%, rgba(246, 252, 233, 0.94) 30%, rgba(246, 252, 233, 0.55) 55%, transparent 78%),
    linear-gradient(180deg, rgba(246, 252, 233, 0.3) 0%, transparent 30%, transparent 70%, rgba(246, 252, 233, 0.55) 100%);
}

:root[data-palette="blueprint"][data-theme="light"] .catalog-banner-fade {
  background:
    linear-gradient(90deg, var(--bg) 0%, rgba(255, 250, 238, 0.94) 30%, rgba(255, 250, 238, 0.55) 55%, transparent 78%),
    linear-gradient(180deg, rgba(255, 250, 238, 0.3) 0%, transparent 30%, transparent 70%, rgba(255, 250, 238, 0.55) 100%);
}

:root[data-palette="coastal"][data-theme="light"] .catalog-banner-fade {
  background:
    linear-gradient(90deg, var(--bg) 0%, rgba(254, 244, 246, 0.94) 30%, rgba(254, 244, 246, 0.55) 55%, transparent 78%),
    linear-gradient(180deg, rgba(254, 244, 246, 0.3) 0%, transparent 30%, transparent 70%, rgba(254, 244, 246, 0.55) 100%);
}

:root[data-palette="citrusink"][data-theme="light"] .catalog-banner-fade {
  background:
    linear-gradient(90deg, var(--bg) 0%, rgba(245, 247, 248, 0.94) 30%, rgba(245, 247, 248, 0.55) 55%, transparent 78%),
    linear-gradient(180deg, rgba(245, 247, 248, 0.3) 0%, transparent 30%, transparent 70%, rgba(245, 247, 248, 0.55) 100%);
}

:root[data-palette="chocolate"][data-theme="light"] .catalog-banner-fade {
  background:
    linear-gradient(90deg, var(--bg) 0%, rgba(250, 243, 239, 0.94) 30%, rgba(250, 243, 239, 0.55) 55%, transparent 78%),
    linear-gradient(180deg, rgba(250, 243, 239, 0.3) 0%, transparent 30%, transparent 70%, rgba(250, 243, 239, 0.55) 100%);
}

:root[data-palette="burgundy"][data-theme="light"] .catalog-banner-fade {
  background:
    linear-gradient(90deg, var(--bg) 0%, rgba(253, 242, 244, 0.94) 30%, rgba(253, 242, 244, 0.55) 55%, transparent 78%),
    linear-gradient(180deg, rgba(253, 242, 244, 0.3) 0%, transparent 30%, transparent 70%, rgba(253, 242, 244, 0.55) 100%);
}

@media (max-width: 700px) {
  .catalog-banner { height: 260px; }
  .catalog-banner-img { object-position: 70% 45%; }
  .catalog-banner-fade {
    background:
      linear-gradient(90deg, var(--void-navy) 0%, rgba(2, 16, 36, 0.85) 40%, rgba(2, 16, 36, 0.3) 70%, transparent 100%),
      linear-gradient(180deg, rgba(2, 16, 36, 0.35) 0%, transparent 30%, transparent 65%, rgba(2, 16, 36, 0.65) 100%);
  }
  :root[data-theme="light"] .catalog-banner-fade {
    background:
      linear-gradient(90deg, var(--bg) 0%, rgba(240, 246, 252, 0.88) 40%, rgba(240, 246, 252, 0.4) 70%, transparent 100%),
      linear-gradient(180deg, rgba(240, 246, 252, 0.3) 0%, transparent 30%, transparent 65%, rgba(240, 246, 252, 0.6) 100%);
  }
  :root[data-palette="bloom"][data-theme="light"] .catalog-banner-fade {
    background:
      linear-gradient(90deg, var(--bg) 0%, rgba(251, 241, 238, 0.88) 40%, rgba(251, 241, 238, 0.4) 70%, transparent 100%),
      linear-gradient(180deg, rgba(251, 241, 238, 0.3) 0%, transparent 30%, transparent 65%, rgba(251, 241, 238, 0.6) 100%);
  }
  :root[data-palette="ember"][data-theme="light"] .catalog-banner-fade {
    background:
      linear-gradient(90deg, var(--bg) 0%, rgba(251, 238, 233, 0.88) 40%, rgba(251, 238, 233, 0.4) 70%, transparent 100%),
      linear-gradient(180deg, rgba(251, 238, 233, 0.3) 0%, transparent 30%, transparent 65%, rgba(251, 238, 233, 0.6) 100%);
  }
  :root[data-palette="forest"][data-theme="light"] .catalog-banner-fade {
    background:
      linear-gradient(90deg, var(--bg) 0%, rgba(241, 248, 242, 0.88) 40%, rgba(241, 248, 242, 0.4) 70%, transparent 100%),
      linear-gradient(180deg, rgba(241, 248, 242, 0.3) 0%, transparent 30%, transparent 65%, rgba(241, 248, 242, 0.6) 100%);
  }
  :root[data-palette="tide"][data-theme="light"] .catalog-banner-fade {
    background:
      linear-gradient(90deg, var(--bg) 0%, rgba(238, 248, 249, 0.88) 40%, rgba(238, 248, 249, 0.4) 70%, transparent 100%),
      linear-gradient(180deg, rgba(238, 248, 249, 0.3) 0%, transparent 30%, transparent 65%, rgba(238, 248, 249, 0.6) 100%);
  }
  :root[data-palette="crimson"][data-theme="light"] .catalog-banner-fade {
    background:
      linear-gradient(90deg, var(--bg) 0%, rgba(253, 240, 239, 0.88) 40%, rgba(253, 240, 239, 0.4) 70%, transparent 100%),
      linear-gradient(180deg, rgba(253, 240, 239, 0.3) 0%, transparent 30%, transparent 65%, rgba(253, 240, 239, 0.6) 100%);
  }
  :root[data-palette="royal"][data-theme="light"] .catalog-banner-fade {
    background:
      linear-gradient(90deg, var(--bg) 0%, rgba(241, 238, 252, 0.88) 40%, rgba(241, 238, 252, 0.4) 70%, transparent 100%),
      linear-gradient(180deg, rgba(241, 238, 252, 0.3) 0%, transparent 30%, transparent 65%, rgba(241, 238, 252, 0.6) 100%);
  }
  :root[data-palette="papaya"][data-theme="light"] .catalog-banner-fade {
    background:
      linear-gradient(90deg, var(--bg) 0%, rgba(255, 250, 240, 0.88) 40%, rgba(255, 250, 240, 0.4) 70%, transparent 100%),
      linear-gradient(180deg, rgba(255, 250, 240, 0.3) 0%, transparent 30%, transparent 65%, rgba(255, 250, 240, 0.6) 100%);
  }
  :root[data-palette="orbit"][data-theme="light"] .catalog-banner-fade {
    background:
      linear-gradient(90deg, var(--bg) 0%, rgba(238, 244, 252, 0.88) 40%, rgba(238, 244, 252, 0.4) 70%, transparent 100%),
      linear-gradient(180deg, rgba(238, 244, 252, 0.3) 0%, transparent 30%, transparent 65%, rgba(238, 244, 252, 0.6) 100%);
  }
  :root[data-palette="neoncyan"][data-theme="light"] .catalog-banner-fade {
    background:
      linear-gradient(90deg, var(--bg) 0%, rgba(234, 252, 255, 0.88) 40%, rgba(234, 252, 255, 0.4) 70%, transparent 100%),
      linear-gradient(180deg, rgba(234, 252, 255, 0.3) 0%, transparent 30%, transparent 65%, rgba(234, 252, 255, 0.6) 100%);
  }
  :root[data-palette="lakers"][data-theme="light"] .catalog-banner-fade {
    background:
      linear-gradient(90deg, var(--bg) 0%, rgba(246, 240, 252, 0.88) 40%, rgba(246, 240, 252, 0.4) 70%, transparent 100%),
      linear-gradient(180deg, rgba(246, 240, 252, 0.3) 0%, transparent 30%, transparent 65%, rgba(246, 240, 252, 0.6) 100%);
  }
  :root[data-palette="aurora"][data-theme="light"] .catalog-banner-fade {
    background:
      linear-gradient(90deg, var(--bg) 0%, rgba(246, 252, 233, 0.88) 40%, rgba(246, 252, 233, 0.4) 70%, transparent 100%),
      linear-gradient(180deg, rgba(246, 252, 233, 0.3) 0%, transparent 30%, transparent 65%, rgba(246, 252, 233, 0.6) 100%);
  }
  :root[data-palette="blueprint"][data-theme="light"] .catalog-banner-fade {
    background:
      linear-gradient(90deg, var(--bg) 0%, rgba(255, 250, 238, 0.88) 40%, rgba(255, 250, 238, 0.4) 70%, transparent 100%),
      linear-gradient(180deg, rgba(255, 250, 238, 0.3) 0%, transparent 30%, transparent 65%, rgba(255, 250, 238, 0.6) 100%);
  }
  :root[data-palette="coastal"][data-theme="light"] .catalog-banner-fade {
    background:
      linear-gradient(90deg, var(--bg) 0%, rgba(254, 244, 246, 0.88) 40%, rgba(254, 244, 246, 0.4) 70%, transparent 100%),
      linear-gradient(180deg, rgba(254, 244, 246, 0.3) 0%, transparent 30%, transparent 65%, rgba(254, 244, 246, 0.6) 100%);
  }
  :root[data-palette="citrusink"][data-theme="light"] .catalog-banner-fade {
    background:
      linear-gradient(90deg, var(--bg) 0%, rgba(245, 247, 248, 0.88) 40%, rgba(245, 247, 248, 0.4) 70%, transparent 100%),
      linear-gradient(180deg, rgba(245, 247, 248, 0.3) 0%, transparent 30%, transparent 65%, rgba(245, 247, 248, 0.6) 100%);
  }
  :root[data-palette="chocolate"][data-theme="light"] .catalog-banner-fade {
    background:
      linear-gradient(90deg, var(--bg) 0%, rgba(250, 243, 239, 0.88) 40%, rgba(250, 243, 239, 0.4) 70%, transparent 100%),
      linear-gradient(180deg, rgba(250, 243, 239, 0.3) 0%, transparent 30%, transparent 65%, rgba(250, 243, 239, 0.6) 100%);
  }
  :root[data-palette="burgundy"][data-theme="light"] .catalog-banner-fade {
    background:
      linear-gradient(90deg, var(--bg) 0%, rgba(253, 242, 244, 0.88) 40%, rgba(253, 242, 244, 0.4) 70%, transparent 100%),
      linear-gradient(180deg, rgba(253, 242, 244, 0.3) 0%, transparent 30%, transparent 65%, rgba(253, 242, 244, 0.6) 100%);
  }
  .catalog-banner-content h1 { font-size: 1.9rem; }
  .catalog-banner-content .eyebrow { margin-top: -28px; font-size: 0.72rem; }
}

@media (max-width: 460px) {
  .catalog-banner { height: 230px; }
  .catalog-banner-content h1 { font-size: 1.55rem; }
  .catalog-banner-content .eyebrow { margin-top: -22px; }
}

.vial-card {
  position: absolute;
  bottom: 20px;
  right: 10px;
  background: var(--bg-vial-card);
  border: 1px solid var(--border-strong);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-primary);
  box-shadow: var(--shadow-card);
}
.vial-card b { display: block; font-size: 0.95rem; color: var(--accent-bright); margin-bottom: 2px; }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding: 70px 0 60px; text-align: center; }
  .hero-lede { margin-left: auto; margin-right: auto; }
  .hero-cta-row, .hero-stats { justify-content: center; }
  .hero-visual { height: 320px; margin-top: 20px; }
  .helix-svg { width: 180px; height: 300px; }
}

@media (max-width: 520px) {
  .hero-lede { max-width: 100%; font-size: 1rem; padding: 0 6px; }
}

/* ---------- Trust strip ---------- */
.trust-strip {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
  padding: 28px 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

@media (max-width: 700px) {
  .trust-strip {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding: 20px 0;
  }
}
.trust-item { display: flex; align-items: center; gap: 10px; color: var(--text-secondary); font-size: 0.88rem; }
.trust-item svg { flex-shrink: 0; color: var(--accent); }

/* ---------- Category tiles ---------- */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}
.category-tile {
  padding: 28px 24px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  background: var(--bg-category-tile);
  transition: transform 0.3s ease, border-color 0.3s ease;
  cursor: pointer;
}
.category-tile:hover { transform: translateY(-4px); border-color: var(--soft-blue); box-shadow: var(--shadow-card); }
.category-tile .icon { width: 38px; height: 38px; color: var(--accent); margin-bottom: 16px; transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1); }
.category-tile:hover .icon { transform: scale(1.12) rotate(-6deg); }
.category-tile h3 { margin-bottom: 6px; font-size: 1.05rem; }
.category-tile p { font-size: 0.85rem; margin: 0; }

/* ---------- Product Detail ---------- */
.breadcrumb { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 28px; }
.breadcrumb a:hover { color: var(--text-primary); }

.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: flex-start;
}

.pd-gallery-main {
  aspect-ratio: 1;
  border-radius: var(--radius-lg);
  background: var(--bg-media);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}
.pd-gallery-main img { width: 100%; height: 100%; object-fit: contain; }
.pd-thumbs { display: flex; gap: 12px; margin-top: 14px; }
.pd-thumb {
  width: 70px; height: 70px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background: var(--bg-media);
  cursor: pointer;
  overflow: hidden;
  transition: border-color 0.2s ease;
}
.pd-thumb img { width: 100%; height: 100%; object-fit: contain; }
.pd-thumb.active { border-color: var(--accent); }

.pd-info .badge-purity { position: static; display: inline-flex; margin-bottom: 14px; }
.pd-cat { font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-muted); text-transform: capitalize; letter-spacing: 0.08em; margin-bottom: 8px; }
.pd-name { margin-bottom: 12px; }
.pd-desc { font-size: 1.02rem; margin-bottom: 28px; }

.variant-select label, .qty-select label {
  display: block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 10px;
}
.variant-chips { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 26px; }
.variant-chip {
  font-family: var(--font-mono);
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background: rgba(84, 131, 179, 0.08);
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 0.9rem;
}
.variant-chip:hover { border-color: var(--soft-blue); }
.variant-chip.active { background: var(--accent); border-color: var(--accent); color: var(--void-navy); font-weight: 700; }

.qty-select { margin-bottom: 22px; }
.qty-stepper { display: inline-flex; align-items: center; border: 1px solid var(--border-subtle); border-radius: var(--radius-sm); overflow: hidden; }
.qty-stepper button {
  width: 42px; height: 42px;
  background: rgba(84, 131, 179, 0.08);
  border: none;
  color: var(--text-primary);
  font-size: 1.1rem;
  cursor: pointer;
  transition: background 0.2s ease;
}
.qty-stepper button:hover { background: rgba(125, 160, 202, 0.2); }
.qty-stepper input {
  width: 56px;
  height: 42px;
  text-align: center;
  background: transparent;
  border: none;
  border-left: 1px solid var(--border-subtle);
  border-right: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 1rem;
}

.tier-hints {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 24px;
}

.tier-hint-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  font-size: 1.05rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--accent);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--accent);
  background: rgba(201, 161, 90, 0.12);
  cursor: pointer;
  text-align: left;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease;
}
:root:not([data-theme="light"]) .tier-hint-item {
  text-shadow: 0 0 12px rgba(227, 194, 129, 0.55);
}

.tier-hint-item:hover {
  background: rgba(201, 161, 90, 0.22);
  box-shadow: 0 0 16px rgba(227, 194, 129, 0.35);
}

.tier-hint-item:active {
  transform: scale(0.98);
}

.tier-hint-item.is-achieved:hover {
  box-shadow: 0 0 26px rgba(227, 194, 129, 0.75), 0 4px 14px rgba(201, 161, 90, 0.4);
}

.tier-hint-check {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  border-radius: 50%;
  border: 1.5px solid var(--accent);
  font-size: 0.85rem;
}

.tier-hint-item.is-achieved {
  color: var(--void-navy);
  background: linear-gradient(135deg, var(--lab-gold-bright), var(--lab-gold));
  border-color: var(--lab-gold-bright);
  box-shadow: 0 0 22px rgba(227, 194, 129, 0.65), 0 4px 14px rgba(201, 161, 90, 0.35);
  text-shadow: none;
}

.tier-hint-item.is-achieved .tier-hint-check {
  background: var(--void-navy);
  border-color: var(--void-navy);
  color: var(--lab-gold-bright);
  font-weight: 700;
}

.tier-hint-item.is-included {
  color: var(--text-muted);
  background: transparent;
  border-color: var(--border-subtle);
  text-shadow: none;
  opacity: 0.75;
}

.tier-hint-item.is-included .tier-hint-check {
  border-color: var(--border-subtle);
  color: var(--text-muted);
}

.price-panel {
  background: var(--bg-summary-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 22px 24px;
  margin-bottom: 24px;
}
.price-row { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 8px; font-size: 0.9rem; color: var(--text-secondary); }
.price-row.total { border-top: 1px solid var(--border-subtle); margin-top: 12px; padding-top: 12px; font-size: 1.3rem; color: var(--text-primary); font-family: var(--font-mono); font-weight: 700; }
.price-row .discount { color: var(--success); }

.pd-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.pd-tabs { display: flex; gap: 4px; margin-top: 56px; border-bottom: 1px solid var(--border-subtle); }
.pd-tab { padding: 12px 20px; font-family: var(--font-display); font-weight: 600; color: var(--text-muted); cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px; }
.pd-tab.active { color: var(--text-primary); border-color: var(--accent); }
.pd-tab-panel { display: none; padding: 28px 4px; }
.pd-tab-panel.active { display: block; }
.pd-tab-panel ul { padding-left: 20px; color: var(--text-secondary); }
.pd-tab-panel li { margin-bottom: 8px; }

.pd-video { aspect-ratio: 16/9; border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--border-subtle); background: var(--deep-navy); display: flex; align-items: center; justify-content: center; color: var(--text-muted); }
.pd-video video, .pd-video iframe { width: 100%; height: 100%; border: none; }

@media (max-width: 900px) {
  .product-detail { grid-template-columns: 1fr; gap: 32px; }
  .pd-gallery-main { aspect-ratio: 4 / 3; max-height: 320px; }
}

/* ---------- Cart / Checkout ---------- */
.cart-layout { display: grid; grid-template-columns: 2fr 1fr; gap: 40px; align-items: flex-start; }
.checkout-layout { grid-template-columns: 1.3fr 1fr; }
.cart-item {
  display: grid;
  grid-template-columns: 90px 1fr auto auto;
  gap: 18px;
  align-items: center;
  padding: 18px 0;
  border-bottom: 1px solid var(--border-subtle);
}
.cart-item img { width: 90px; height: 90px; object-fit: contain; background: var(--bg-media); border-radius: var(--radius-sm); border: 1px solid var(--border-subtle); }
.cart-item-name { font-family: var(--font-display); font-weight: 600; margin-bottom: 4px; }
.cart-item-variant { font-family: var(--font-mono); font-size: 0.8rem; color: var(--text-muted); }
.cart-item-qty { display: flex; align-items: center; gap: 8px; }
.cart-item-remove { color: var(--danger); font-size: 0.82rem; cursor: pointer; background: none; border: none; }
.cart-item-total { font-family: var(--font-mono); font-weight: 600; color: var(--text-primary); text-align: right; min-width: 90px; }

.summary-card {
  background: var(--bg-summary-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  position: sticky;
  top: calc(var(--header-height) + 20px);
}

@media (max-width: 900px) {
  .cart-layout { grid-template-columns: 1fr; }
  .cart-item {
    grid-template-columns: 72px 1fr;
    grid-template-areas:
      "img info"
      "qty qty"
      "total total";
    row-gap: 12px;
  }
  .cart-item img { grid-area: img; width: 72px; height: 72px; }
  .cart-item-info { grid-area: info; }
  .cart-item-qty { grid-area: qty; justify-content: space-between; }
  .cart-item-total { grid-area: total; text-align: left; font-size: 1.05rem; }
}

/* ---------- About / Contact ---------- */
.split-section { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 40px; }
.stat-card { text-align: center; padding: 24px; border: 1px solid var(--border-subtle); border-radius: var(--radius-md); }
.stat-card .num { font-family: var(--font-mono); font-size: 2rem; color: var(--accent-bright); font-weight: 700; }
.stat-card .label { font-size: 0.8rem; color: var(--text-muted); margin-top: 6px; }

.contact-methods { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; margin-top: 32px; }
.contact-card { padding: 24px; border: 1px solid var(--border-subtle); border-radius: var(--radius-md); background: rgba(84, 131, 179, 0.06); }
.contact-card h3 { font-size: 1rem; margin-bottom: 6px; }

@media (max-width: 900px) {
  .split-section { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 520px) {
  .stat-grid { grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .stat-card { padding: 14px 8px; }
  .stat-card .num { font-size: 1.3rem; }
  .stat-card .label { font-size: 0.68rem; }
}

/* ---------- Guide article detail ---------- */
.guide-article h1 { margin-bottom: 12px; }
.guide-article-summary { font-size: 1.05rem; margin-bottom: 28px; }
.guide-article-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}
.guide-article-gallery img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: var(--bg-media);
}
.guide-article-video {
  aspect-ratio: 16/9;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  background: var(--deep-navy);
  margin-bottom: 28px;
}
.guide-article-video video { width: 100%; height: 100%; display: block; }
.guide-article-body p {
  font-size: 1.02rem;
  line-height: 1.75;
  color: var(--text-secondary);
  margin-bottom: 20px;
}
.guide-article-entry strong {
  display: block;
  font-size: 1.12rem;
  color: var(--accent);
  margin-bottom: 6px;
}
.guide-article-entry + .guide-article-entry {
  padding-top: 20px;
  border-top: 1px solid var(--border-subtle);
}