:root {
  --brand-primary: #1e3d59;
  --brand-secondary: #438a5e;
  --brand-accent: #ff6e40;
  --brand-bg: #f5f7fa;
  --card-bg: #ffffff;
  --text-main: #2b2d42;
  --text-mute: #8d99ae;
  --border-color: rgba(30, 61, 89, 0.08);
}
* { box-sizing: border-box; transition: all 0.25s ease; }
body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--brand-bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text-main);
  display: flex;
  flex-direction: column;
}
header {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(30, 61, 89, 0.04);
}
.nav-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo-area {
  display: flex;
  align-items: center;
  gap: 12px;
}
.logo-icon {
  width: 38px;
  height: 38px;
  background: var(--brand-primary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 900;
  font-size: 18px;
}
.logo-text h2 {
  margin: 0;
  font-size: 18px;
  color: var(--brand-primary);
  font-weight: 800;
  letter-spacing: 0.03em;
}
.logo-text span {
  font-size: 11px;
  color: var(--text-mute);
  letter-spacing: 0.08em;
}
.nav-links {
  display: none;
  gap: 24px;
}
@media (min-width: 768px) {
  .nav-links { display: flex; }
}
.nav-links a {
  text-decoration: none;
  color: var(--text-main);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--brand-secondary);
}
main {
  flex: 1;
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
  padding: 24px 20px 48px;
}
.banner {
  background: linear-gradient(135deg, var(--brand-primary), #2b5876);
  border-radius: 20px;
  color: #ffffff;
  padding: 38px 30px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: 0 12px 32px rgba(30, 61, 89, 0.15);
  margin-bottom: 28px;
  position: relative;
  overflow: hidden;
}
.banner h1 {
  margin: 0;
  font-size: clamp(24px, 5vw, 36px);
  font-weight: 800;
  line-height: 1.25;
}
.banner p {
  margin: 0;
  font-size: 14px;
  opacity: 0.85;
  max-width: 520px;
  line-height: 1.6;
}
.banner-btn {
  display: inline-block;
  align-self: flex-start;
  background: var(--brand-accent);
  color: #ffffff;
  padding: 10px 24px;
  border-radius: 20px;
  font-weight: 700;
  font-size: 13px;
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(255, 110, 64, 0.3);
  cursor: pointer;
}
.banner-btn:hover {
  background: #e65c30;
  transform: translateY(-2px);
}
.section-title {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-main);
  margin: 0 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.search-box {
  padding: 6px 14px;
  border-radius: 20px;
  border: 1px solid var(--border-color);
  background: #fff;
  font-size: 13px;
  outline: none;
  width: 200px;
}
.search-box:focus { border-color: var(--brand-secondary); }

.category-tabs {
  display: flex;
  gap: 10px;
  margin-bottom: 24px;
  overflow-x: auto;
  padding-bottom: 4px;
}
.cat-btn {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-mute);
  cursor: pointer;
  white-space: nowrap;
}
.cat-btn.active {
  background: var(--brand-secondary);
  color: #ffffff;
  border-color: var(--brand-secondary);
  box-shadow: 0 4px 12px rgba(67, 138, 94, 0.25);
}
.product-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 16px;
}
@media (min-width: 560px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 860px) {
  .product-grid { grid-template-columns: repeat(3, 1fr); }
}
.product-card {
  background: var(--card-bg);
  border-radius: 16px;
  padding: 20px;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 16px rgba(30, 61, 89, 0.03);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.product-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(30, 61, 89, 0.08);
  border-color: rgba(30, 61, 89, 0.2);
}
.prod-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
}
.prod-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  margin: 0 0 4px;
}
.prod-desc {
  font-size: 12px;
  color: var(--text-mute);
  margin: 0;
  line-height: 1.5;
}
.prod-tag {
  font-size: 10px;
  font-weight: 700;
  color: var(--brand-accent);
  background: rgba(255, 110, 64, 0.1);
  padding: 3px 8px;
  border-radius: 6px;
  text-transform: uppercase;
}
.prod-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid rgba(0,0,0,0.04);
}
.prod-price {
  font-size: 18px;
  font-weight: 800;
  color: var(--brand-primary);
}
.order-btn {
  background: var(--brand-secondary);
  color: #ffffff;
  border: none;
  padding: 6px 14px;
  border-radius: 14px;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(67, 138, 94, 0.2);
}
.order-btn:hover {
  background: #35704d;
  transform: scale(1.05);
}
footer {
  background: var(--card-bg);
  border-top: 1px solid var(--border-color);
  padding: 24px 20px;
  text-align: center;
  font-size: 12px;
  color: var(--text-mute);
}
footer p { margin: 4px 0; }