:root {
  color-scheme: light;
  --bg: #f6f7fb;
  --card: #ffffff;
  --text: #1d2433;
  --muted: #6b7280;
  --line: #e5e7eb;
  --line-strong: #d9dce3;
  --accent: #16a34a;
  --accent-2: #15803d;
  --teal: #0f766e;
  --teal-dark: #134e4a;
  --blue: #2563eb;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Microsoft JhengHei UI", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}

body.filters-open {
  overflow: hidden;
}

.page {
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px;
}

/* shared */
.tag-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tag {
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  background: #ecfeff;
  color: #155e75;
}

.tag.featured {
  background: #fffbeb;
  color: #92400e;
}

.title {
  margin: 0;
  line-height: 1.35;
}

.subtitle {
  color: var(--muted);
}

.price-row {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}

.price {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-size: 24px;
  font-weight: 700;
  color: #dc2626;
}

.price-label {
  font-size: 12px;
  font-weight: 700;
  color: #9a3412;
  background: #fff7ed;
  border: 1px solid #fed7aa;
  border-radius: 999px;
  padding: 2px 8px;
}

.compare {
  display: inline-flex;
  align-items: baseline;
  gap: 1px;
  color: #9ca3af;
  text-decoration: line-through;
  font-size: 14px;
}

.price-currency {
  font-size: 0.6em;
  line-height: 1;
  margin-right: 1px;
}

.thumb-empty {
  display: grid;
  place-items: center;
  color: #6b7280;
  font-size: 14px;
}

/* combo list */
.hero {
  background: linear-gradient(135deg, var(--teal) 0%, var(--teal-dark) 100%);
  color: #fff;
  border-radius: 28px;
  padding: 32px;
  box-shadow: var(--shadow);
  margin-bottom: 24px;
}

.hero h1 {
  margin: 0 0 8px;
  font-size: 36px;
}

.hero p {
  margin: 0;
  font-size: 16px;
  opacity: 0.92;
}

.toolbar {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 12px;
  align-items: center;
  margin-bottom: 22px;
}

.toolbar input[type="text"] {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px 16px;
  font-size: 16px;
  background: #fff;
}

.toolbar label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  color: var(--muted);
  background: #fff;
  padding: 13px 14px;
  border-radius: 14px;
  border: 1px solid var(--line);
}

.toolbar button,
.filter-toggle,
.filter-close {
  border: 0;
  border-radius: 14px;
  padding: 14px 18px;
  font-size: 15px;
  font-weight: 700;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}

.toolbar button:hover,
.filter-toggle:hover,
.filter-close:hover {
  background: var(--accent-2);
}

.mobile-filter-bar {
  display: none;
  margin: 0 0 16px;
}

.filter-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  box-shadow: var(--shadow);
}

.filter-toggle .burger {
  display: inline-flex;
  flex-direction: column;
  gap: 3px;
}

.filter-toggle .burger span {
  width: 16px;
  height: 2px;
  background: #fff;
  border-radius: 99px;
  display: block;
}

.summary {
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 15px;
}

.layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.sidebar {
  display: grid;
  gap: 16px;
}

.filter-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 18px;
}

.filter-card h3 {
  margin: 0 0 12px;
  font-size: 15px;
}

.filter-list {
  display: grid;
  gap: 8px;
}

.filter-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  text-decoration: none;
  color: #111827;
  padding: 9px 10px;
  border-radius: 12px;
}

.filter-link:hover {
  background: #f8fafc;
}

.filter-link.active {
  background: #ecfdf5;
  color: #166534;
  font-weight: 700;
}

.filter-count {
  color: var(--muted);
  font-size: 12px;
}

.content-wrap {
  min-width: 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}

.card {
  background: var(--card);
  border: 1px solid rgba(229, 231, 235, 0.9);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

.thumb-link {
  display: block;
  overflow: hidden;
  cursor: pointer;
}

.thumb-link:hover .thumb,
.thumb-link:focus-visible .thumb {
  transform: scale(1.03);
  filter: brightness(1.02);
}

.thumb-link:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.28);
  outline-offset: 3px;
  border-radius: 14px;
}

.thumb {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, #d1d5db 0%, #f3f4f6 100%);
  display: block;
  object-fit: cover;
  transition: transform 0.18s ease, filter 0.18s ease;
}

.content {
  padding: 18px;
  display: grid;
  gap: 12px;
}

.card .title {
  font-size: 20px;
}

.card .subtitle {
  margin: -4px 0 0;
  font-size: 15px;
}

.meta {
  display: grid;
  gap: 6px;
}

.meta-item {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 10px;
  font-size: 13px;
}

.meta-item .label {
  color: var(--muted);
}

.empty {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
  padding: 28px;
}

.pager {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 24px;
}

.pager a {
  text-decoration: none;
  background: #fff;
  border: 1px solid var(--line);
  padding: 10px 16px;
  border-radius: 12px;
  color: #111827;
  font-weight: 700;
}

.filter-drawer-backdrop {
  display: none;
}

/* combo detail */
.page-detail {
  max-width: 1200px;
}

.topbar {
  margin-bottom: 18px;
}

.topbar a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: #111827;
  background: #fff;
  border: 1px solid var(--line-strong);
  padding: 10px 14px;
  border-radius: 12px;
  font-weight: 700;
  box-shadow: var(--shadow);
}

.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(340px, 460px);
  gap: 22px;
  align-items: start;
}

.panel {
  background: var(--card);
  border: 1px solid rgba(229, 231, 235, 0.9);
  border-radius: 24px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.gallery {
  display: grid;
  gap: 12px;
  padding: 18px;
}

.main-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 18px;
  background: linear-gradient(135deg, #d1d5db 0%, #f3f4f6 100%);
}

.thumb-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(92px, 1fr));
  gap: 10px;
}

.thumb-btn {
  padding: 0;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: #fff;
  overflow: hidden;
  cursor: pointer;
}

.thumb-btn.active {
  border-color: #111827;
  box-shadow: 0 0 0 1px #111827 inset;
}

.thumb-grid img,
.thumb-grid .thumb-empty {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  display: block;
  background: #f3f4f6;
}

.detail {
  padding: 24px;
  display: grid;
  gap: 16px;
}

.detail .title {
  font-size: 34px;
  line-height: 1.2;
}

.detail .subtitle {
  margin: 8px 0 0;
  font-size: 17px;
}

.summary-box {
  display: grid;
  gap: 12px;
  padding: 16px 18px;
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  background: #fbfcfe;
}

.summary-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 12px;
  font-size: 14px;
}

.summary-item .label {
  color: var(--muted);
}

.ask-box {
  padding: 18px;
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  background: #fbfcfe;
}

.contact-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.icon-btn {
  border: 1px solid var(--line-strong);
  background: #fff;
  color: #111827;
  border-radius: 999px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 700;
  cursor: pointer;
  padding: 10px 14px;
}

.icon-circle {
  width: 28px;
  height: 28px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #fff;
  flex: 0 0 28px;
}

.line-circle {
  background: #06c755;
  font-size: 10px;
}

.fb-circle {
  background: #4267b2;
  font-size: 20px;
  font-family: Arial, sans-serif;
  line-height: 1;
}

.qr-wrap {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line-strong);
  display: grid;
  justify-items: center;
  gap: 8px;
}

.qr-wrap img {
  width: 140px;
  height: 140px;
  object-fit: contain;
  background: #fff;
}

.qr-caption {
  font-size: 13px;
  color: #666;
}

.bottom-card {
  margin-top: 22px;
  background: #fff;
  border: 1px solid rgba(229, 231, 235, 0.9);
  border-radius: 24px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.tabbar {
  display: flex;
  gap: 24px;
  padding: 18px 22px 0;
  border-bottom: 1px solid var(--line-strong);
}

.tab-btn {
  appearance: none;
  background: none;
  border: 0;
  border-bottom: 2px solid transparent;
  color: var(--muted);
  font: 700 15px/1 "Microsoft JhengHei UI", sans-serif;
  padding: 0 0 12px;
  cursor: pointer;
}

.tab-btn.active {
  color: #111827;
  border-bottom-color: #111827;
}

.tab-panel {
  display: none;
  padding: 22px;
}

.tab-panel.active {
  display: block;
}

.spec-section + .spec-section {
  margin-top: 26px;
}

.spec-subtitle {
  margin: 0 0 12px;
  font-size: 18px;
  letter-spacing: 0.02em;
}

.spec-table,
.kv-table {
  width: 100%;
  border-collapse: collapse;
}

.spec-table th,
.spec-table td {
  border: 1px solid var(--line-strong);
  padding: 14px 12px;
  font-size: 15px;
}

.spec-table th {
  background: #f8fafc;
  font-weight: 700;
  text-align: center;
}

.spec-table th:first-child,
.spec-table td:first-child {
  text-align: left;
  width: 32%;
}

.spec-table td {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.spec-note {
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
}

.kv-table th,
.kv-table td {
  border: 1px solid var(--line-strong);
  padding: 12px;
  font-size: 14px;
  vertical-align: top;
}

.kv-table th {
  width: 32%;
  text-align: left;
  background: #f8fafc;
}

.feature-copy {
  white-space: pre-wrap;
  line-height: 1.9;
  color: #374151;
}

@media (max-width: 960px) {
  .layout,
  .detail-layout {
    grid-template-columns: 1fr;
  }

  .mobile-filter-bar {
    display: block;
  }

  .layout > .desktop-sidebar {
    display: none;
  }

  .filter-drawer-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.38);
    z-index: 50;
  }

  .filter-drawer-backdrop.open {
    display: block;
  }

  .sidebar.mobile-drawer {
    display: grid;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: min(86vw, 340px);
    padding: 18px;
    background: var(--bg);
    overflow-y: auto;
    z-index: 60;
    transform: translateX(-105%);
    transition: transform 0.2s ease;
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.2);
  }

  .sidebar.mobile-drawer.open {
    transform: translateX(0);
  }

  .mobile-drawer-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 6px;
  }

  .mobile-drawer-head h2 {
    margin: 0;
    font-size: 18px;
  }

  .filter-close {
    padding: 10px 14px;
    border-radius: 12px;
  }

  .detail .title {
    font-size: 28px;
  }
}

@media (min-width: 961px) {
  .mobile-drawer {
    display: none !important;
  }
}

@media (max-width: 720px) {
  .page {
    padding: 16px;
  }

  .hero {
    padding: 24px 20px;
    border-radius: 22px;
  }

  .hero h1 {
    font-size: 28px;
  }

  .toolbar {
    grid-template-columns: 1fr;
  }

  .toolbar label,
  .toolbar button {
    width: 100%;
    justify-content: center;
  }

  .grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .summary-item {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .contact-row {
    grid-template-columns: 1fr;
  }

  .tabbar {
    gap: 18px;
  }
}