/* Gabriel Seguranca - Design System v2.0 */
:root {
  --primary: #1a56db;
  --primary-light: #e8effd;
  --primary-dark: #1e3a5f;
  --success: #059669;
  --success-bg: #ecfdf5;
  --warning: #d97706;
  --warning-bg: #fffbeb;
  --danger: #dc2626;
  --danger-bg: #fef2f2;
  --purple: #7c3aed;
  --purple-bg: #ede9fe;
  --info: #0284c7;
  --info-bg: #e0f2fe;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.1), 0 4px 6px rgba(0,0,0,0.05);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Inter', sans-serif;
  background: var(--gray-50);
  color: var(--gray-800);
  line-height: 1.6;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Header */
.header {
  background: linear-gradient(135deg, #1e3a5f 0%, #1a56db 50%, #3b82f6 100%);
  color: white;
  padding: 2.5rem 1.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.header::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse, rgba(255,255,255,0.05) 0%, transparent 70%);
  pointer-events: none;
}
.header h1 { font-size: 1.75rem; font-weight: 800; margin-bottom: 0.5rem; position: relative; }
.header .subtitle { opacity: 0.85; font-size: 0.95rem; position: relative; }
.header .meta {
  display: flex; gap: 0.75rem; justify-content: center;
  margin-top: 1rem; flex-wrap: wrap; position: relative;
}
.header .meta span {
  background: rgba(255,255,255,0.15);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.8rem;
  backdrop-filter: blur(4px);
}
.header .meta .highlight {
  background: rgba(255,100,100,0.3);
}
.container { max-width: 960px; margin: 0 auto; padding: 1.5rem; }

/* Page Navigation Bar */
.page-nav {
  background: white;
  border-bottom: 1px solid var(--gray-200);
  position: sticky;
  top: 0;
  z-index: 200;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}
.page-nav-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  gap: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.page-nav a {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.75rem 1rem;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--gray-600);
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
}
.page-nav a:hover { color: var(--primary); text-decoration: none; border-bottom-color: var(--primary-light); }
.page-nav a.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 700; }
.page-nav a .nav-icon { font-size: 1rem; }

/* Section Nav (in-page) */
.nav {
  background: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem;
  margin-bottom: 1.5rem;
}
.nav-title { font-weight: 600; font-size: 0.85rem; color: var(--gray-600); margin-bottom: 0.5rem; }
.nav-links { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.nav-links a {
  text-decoration: none;
  color: var(--primary);
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
  background: var(--primary-light);
  transition: all 0.2s;
  white-space: nowrap;
}
.nav-links a:hover { background: var(--primary); color: white; text-decoration: none; }
.nav-links a.nav-new { background: var(--danger-bg); color: var(--danger); font-weight: 600; }
.nav-links a.nav-new:hover { background: var(--danger); color: white; }

/* Cards */
.card {
  background: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}
.card-header {
  display: flex; align-items: center; gap: 0.75rem;
  margin-bottom: 1rem; padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--gray-100);
}
.card-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; flex-shrink: 0;
}
.card-header h2 { font-size: 1.15rem; font-weight: 700; color: var(--gray-900); }
.card-header .badge {
  margin-left: auto;
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  border-radius: 20px;
  font-weight: 600;
}

/* Hub Cards (landing page) */
.hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin: 2rem 0;
}
.hub-card {
  background: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
}
.hub-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); text-decoration: none; }
.hub-card-img {
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  position: relative;
}
.hub-card-img .count-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(0,0,0,0.5);
  color: white;
  padding: 0.2rem 0.6rem;
  border-radius: 12px;
  font-size: 0.7rem;
  font-weight: 600;
  backdrop-filter: blur(4px);
}
.hub-card-body { padding: 1.25rem; flex: 1; }
.hub-card-body h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.4rem; color: var(--gray-900); }
.hub-card-body p { font-size: 0.85rem; color: var(--gray-600); margin-bottom: 0.75rem; }
.hub-card-footer {
  padding: 0.75rem 1.25rem;
  border-top: 1px solid var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
}
.hub-card-footer .arrow { color: var(--primary); font-weight: 700; }

/* Executive Summary */
.summary-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}
.summary-item {
  border: 2px solid var(--gray-200);
  border-radius: 10px;
  padding: 1rem;
  text-align: center;
  transition: border-color 0.2s, transform 0.2s;
}
.summary-item:hover { border-color: var(--primary); transform: translateY(-2px); }
.summary-item .phase {
  font-size: 0.7rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.5px; margin-bottom: 0.25rem;
}
.summary-item .product { font-weight: 600; font-size: 0.95rem; margin-bottom: 0.25rem; }
.summary-item .price { font-size: 1.1rem; font-weight: 700; color: var(--primary); }
.summary-item .when { font-size: 0.75rem; color: var(--gray-600); margin-top: 0.25rem; }
.phase-1 { border-color: var(--success); }
.phase-1 .phase { color: var(--success); }

/* Product Cards */
.product {
  border: 1px solid var(--gray-200);
  border-radius: 10px;
  padding: 1rem;
  margin-bottom: 0.75rem;
  transition: box-shadow 0.2s;
}
.product:hover { box-shadow: var(--shadow-md); }
.product-header {
  display: flex; justify-content: space-between; align-items: flex-start;
  margin-bottom: 0.5rem; flex-wrap: wrap; gap: 0.5rem;
}
.product-name { font-weight: 700; font-size: 1rem; }
.product-price {
  background: var(--primary-light);
  color: var(--primary);
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.9rem;
  white-space: nowrap;
}
.product-specs {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.5rem; margin: 0.75rem 0;
}
.spec { font-size: 0.8rem; padding: 0.3rem 0; }
.spec-label { color: var(--gray-600); font-size: 0.7rem; display: block; }
.spec-value { font-weight: 600; }
.product-links a, .store-links a {
  display: inline-block;
  text-decoration: none;
  color: var(--primary);
  font-size: 0.8rem;
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--primary);
  border-radius: 6px;
  margin-right: 0.5rem;
  margin-top: 0.25rem;
  transition: all 0.2s;
}
.product-links a:hover, .store-links a:hover { background: var(--primary); color: white; }

/* Product Image Cards */
.product-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.product-img-card {
  border: 1px solid var(--gray-200);
  border-radius: 10px;
  overflow: hidden;
  transition: box-shadow 0.2s, transform 0.2s;
  background: white;
}
.product-img-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.product-thumb {
  height: 140px;
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.product-thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 0.5rem;
}
.thumb-icon { font-size: 3rem; opacity: 0.3; }
.format-badge {
  position: absolute;
  top: 8px;
  left: 8px;
  background: rgba(0,0,0,0.7);
  color: white;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}
.product-card-body { padding: 0.75rem; }
.store-link { font-size: 0.7rem !important; padding: 0.2rem 0.4rem !important; }
.store-link.emporio { border-color: #e44d26; color: #e44d26; }
.store-link.emporio:hover { background: #e44d26; color: white; }
.store-link.ml { border-color: #fff200; color: #333; background: #fffde0; }
.store-link.ml:hover { background: #fff200; color: #333; }
.store-link.shopee { border-color: #ee4d2d; color: #ee4d2d; }
.store-link.shopee:hover { background: #ee4d2d; color: white; }
.store-link.kabum { border-color: #ff6500; color: #ff6500; }
.store-link.kabum:hover { background: #ff6500; color: white; }
.store-link.amazon { border-color: #ff9900; color: #232f3e; }
.store-link.amazon:hover { background: #ff9900; color: white; }

/* Tier Badges */
.tier {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 700;
  margin-right: 0.5rem;
}
.tier-s { background: #fbbf24; color: #78350f; }
.tier-a { background: #a78bfa; color: #3b0764; }
.tier-b { background: var(--gray-200); color: var(--gray-700); }
.tier-c { background: var(--gray-100); color: var(--gray-600); }

/* Section Headings */
.section-sub {
  font-size: 0.95rem;
  font-weight: 700;
  margin: 1rem 0 0.75rem;
  color: var(--gray-800);
}
.section-divider {
  text-align: center;
  padding: 1.5rem 0;
  margin: 1rem 0;
}
.section-divider h2 {
  font-size: 1.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--danger), #f97316);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-divider p { color: var(--gray-600); font-size: 0.9rem; }

/* Alerts */
.alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
}
.alert-success { background: var(--success-bg); color: #065f46; border-left: 3px solid var(--success); }
.alert-warning { background: var(--warning-bg); color: #92400e; border-left: 3px solid var(--warning); }
.alert-danger { background: var(--danger-bg); color: #991b1b; border-left: 3px solid var(--danger); }
.alert-info { background: var(--info-bg); color: #0c4a6e; border-left: 3px solid var(--info); }

/* Tables */
.compare-table { overflow-x: auto; margin: 0.5rem 0; }
.compare-table table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}
.compare-table th {
  background: var(--gray-800);
  color: white;
  padding: 0.6rem 0.75rem;
  text-align: left;
  font-weight: 600;
  white-space: nowrap;
}
.compare-table td {
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--gray-200);
}
.compare-table tr:nth-child(even) { background: var(--gray-50); }
.compare-table tr:hover { background: var(--primary-light); }

/* Board Cards (DIY) */
.board-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 0.75rem;
}
.board-card {
  border: 2px solid var(--gray-200);
  border-radius: 10px;
  padding: 1rem;
  position: relative;
  transition: transform 0.2s;
}
.board-card:hover { transform: translateY(-2px); }
.board-card.board-best {
  border-color: var(--success);
  background: var(--success-bg);
}
.board-card.board-best::after {
  content: '#1 RECOMENDADO';
  position: absolute;
  top: -10px;
  right: 10px;
  background: var(--success);
  color: white;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-size: 0.65rem;
  font-weight: 700;
}
.board-card.board-alt {
  border-color: var(--primary);
  background: var(--primary-light);
}
.board-card.board-alt::after {
  content: '#2 ALTERNATIVA';
  position: absolute;
  top: -10px;
  right: 10px;
  background: var(--primary);
  color: white;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-size: 0.65rem;
  font-weight: 700;
}
.board-badge {
  display: inline-block;
  padding: 0.1rem 0.4rem;
  border-radius: 3px;
  font-size: 0.6rem;
  font-weight: 600;
  margin-right: 0.25rem;
}
.board-badge.b-cat1 { background: #dbeafe; color: #1e40af; }
.board-badge.b-gnss { background: #d1fae5; color: #065f46; }
.board-badge.b-b28 { background: #fce7f3; color: #9d174d; }
.board-badge.b-wifi { background: #fef3c7; color: #92400e; }

/* Build Paths */
.build-paths {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1rem;
}
.build-path {
  border: 2px solid var(--gray-200);
  border-radius: 12px;
  overflow: hidden;
}
.build-path-header {
  padding: 1rem;
  color: white;
  text-align: center;
}
.bp-full .build-path-header { background: linear-gradient(135deg, #059669, #10b981); }
.bp-lora .build-path-header { background: linear-gradient(135deg, #7c3aed, #a78bfa); }
.bp-mini .build-path-header { background: linear-gradient(135deg, #1a56db, #3b82f6); }
.build-path-body { padding: 1rem; }
.build-path-body ul { list-style: none; }
.build-path-body li {
  padding: 0.3rem 0;
  font-size: 0.82rem;
  border-bottom: 1px solid var(--gray-100);
}
.build-path-body li:last-child { border-bottom: none; }
.build-path-price {
  text-align: center;
  padding: 0.75rem;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--primary);
  border-top: 1px solid var(--gray-200);
}

/* Supplier Cards */
.supplier-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 0.75rem;
}
.supplier-card {
  border: 2px solid var(--gray-200);
  border-radius: 10px;
  padding: 1rem;
  position: relative;
  transition: transform 0.2s;
}
.supplier-card:hover { transform: translateY(-2px); }
.supplier-card.supplier-best {
  border-color: var(--success);
  background: var(--success-bg);
}
.supplier-card.supplier-best::before {
  content: 'MELHOR OPCAO';
  position: absolute;
  top: -10px;
  right: 10px;
  background: var(--success);
  color: white;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-size: 0.65rem;
  font-weight: 700;
}

/* Shopping Cart */
.cart-box {
  border: 2px solid var(--gray-200);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 1rem;
}
.cart-header {
  padding: 0.75rem 1rem;
  color: white;
  font-weight: 700;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.cart-header.cart-ali { background: linear-gradient(135deg, #e44d26, #ff6a00); }
.cart-header.cart-br { background: linear-gradient(135deg, #009739, #00b84d); }
.cart-header.cart-shopee { background: linear-gradient(135deg, #ee4d2d, #ff6a00); }
.cart-header.cart-ml { background: linear-gradient(135deg, #fff200, #ffe600); color: #333; }
.cart-body { padding: 0; }
.cart-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 1rem;
  border-bottom: 1px solid var(--gray-100);
  font-size: 0.82rem;
}
.cart-item:last-child { border-bottom: none; }
.cart-item .ci-name { flex: 1; }
.cart-item .ci-store { color: var(--gray-600); font-size: 0.7rem; margin: 0 0.5rem; }
.cart-item .ci-price { font-weight: 700; white-space: nowrap; }
.cart-total {
  display: flex;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: var(--gray-100);
  font-weight: 700;
}
.grand-total {
  background: linear-gradient(135deg, #1e3a5f, #1a56db);
  color: white;
  border-radius: 12px;
  padding: 1.5rem;
  text-align: center;
  margin: 1.5rem 0;
}
.grand-total .gt-label { font-size: 0.85rem; opacity: 0.8; }
.grand-total .gt-price { font-size: 2rem; font-weight: 800; }
.grand-total .gt-detail { font-size: 0.8rem; opacity: 0.7; margin-top: 0.25rem; }

/* Comparison Cards (Shopee vs ML) */
.vs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 0.75rem;
}
.vs-card {
  border: 2px solid var(--gray-200);
  border-radius: 10px;
  overflow: hidden;
}
.vs-card-header {
  padding: 0.6rem 1rem;
  font-weight: 700;
  font-size: 0.85rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.vs-card-body { padding: 0.75rem 1rem; }
.vs-winner { border-color: var(--success); }
.vs-winner .vs-card-header { background: var(--success-bg); color: #065f46; }
.vs-tie { border-color: var(--gray-300); }
.vs-tie .vs-card-header { background: var(--gray-100); color: var(--gray-700); }
.vs-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.3rem 0;
  font-size: 0.82rem;
  border-bottom: 1px solid var(--gray-100);
}
.vs-row:last-child { border-bottom: none; }
.vs-platform { font-weight: 600; }
.vs-price { font-weight: 700; }
.vs-winner-tag {
  background: var(--success);
  color: white;
  padding: 0.1rem 0.4rem;
  border-radius: 3px;
  font-size: 0.6rem;
  font-weight: 700;
}

/* Community Project Cards */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
}
.project-card {
  border: 2px solid var(--gray-200);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}
.project-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.project-card-img {
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  position: relative;
}
.project-card-img .platform-badge {
  position: absolute;
  top: 8px;
  left: 8px;
  background: rgba(0,0,0,0.7);
  color: white;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-size: 0.65rem;
  font-weight: 700;
}
.project-card-body { padding: 1rem; }
.project-card-body h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 0.4rem; }
.project-card-body p { font-size: 0.82rem; color: var(--gray-600); margin-bottom: 0.5rem; }
.project-tags { display: flex; flex-wrap: wrap; gap: 0.25rem; margin-top: 0.5rem; }
.project-tag {
  display: inline-block;
  padding: 0.1rem 0.4rem;
  background: var(--gray-100);
  border-radius: 3px;
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--gray-700);
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.75rem;
}
.stat-card {
  background: white;
  border: 2px solid var(--gray-200);
  border-radius: 10px;
  padding: 1rem;
  text-align: center;
}
.stat-number {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}
.stat-label {
  font-size: 0.75rem;
  color: var(--gray-600);
  margin-top: 0.25rem;
}

/* Footer */
.footer {
  background: var(--gray-900);
  color: var(--gray-300);
  padding: 2rem 1.5rem;
  text-align: center;
  font-size: 0.8rem;
}
.footer a { color: #93c5fd; }
.footer .footer-stats {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}
.footer .footer-stats span { opacity: 0.7; }

/* Legal Timeline */
.timeline { position: relative; padding-left: 2rem; }
.timeline::before {
  content: '';
  position: absolute;
  left: 0.5rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gray-200);
}
.timeline-item {
  position: relative;
  margin-bottom: 1rem;
  padding: 0.75rem;
  background: var(--gray-50);
  border-radius: var(--radius-sm);
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -1.65rem;
  top: 1rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary);
}
.timeline-item.approved::before { background: var(--success); }
.timeline-item.danger::before { background: var(--danger); }

/* Checklists */
.checklist { list-style: none; }
.checklist li {
  padding: 0.5rem 0.5rem 0.5rem 2rem;
  position: relative;
  font-size: 0.85rem;
  border-bottom: 1px solid var(--gray-100);
}
.checklist li::before {
  content: '[ ]';
  position: absolute;
  left: 0;
  color: var(--gray-400);
  font-family: monospace;
  font-weight: 700;
}
.checklist li.done::before { content: '[x]'; color: var(--success); }

/* Responsive */
@media (max-width: 768px) {
  .header h1 { font-size: 1.4rem; }
  .container { padding: 1rem; }
  .card { padding: 1rem; }
  .hub-grid { grid-template-columns: 1fr; }
  .product-gallery { grid-template-columns: 1fr 1fr; }
  .board-grid { grid-template-columns: 1fr; }
  .build-paths { grid-template-columns: 1fr; }
  .supplier-grid { grid-template-columns: 1fr; }
  .vs-grid { grid-template-columns: 1fr; }
  .project-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .summary-grid { grid-template-columns: 1fr 1fr; }
  .page-nav a { padding: 0.6rem 0.75rem; font-size: 0.75rem; }
  .compare-table { font-size: 0.75rem; }
  .cart-item .ci-store { display: none; }
}
@media (max-width: 480px) {
  .product-gallery { grid-template-columns: 1fr; }
  .summary-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}