:root {
  --navy: #0f2744;
  --navy-light: #1a3a5c;
  --gold: #c9a227;
  --gold-light: #e8c547;
  --sky: #e8f4fc;
  --sky-deep: #b8dff5;
  --white: #ffffff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-600: #64748b;
  --gray-800: #1e293b;
  --shadow: 0 4px 24px rgba(15, 39, 68, 0.08);
  --shadow-lg: 0 12px 48px rgba(15, 39, 68, 0.12);
  --radius: 16px;
  --radius-sm: 10px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'DM Sans', system-ui, sans-serif;
  color: var(--gray-800);
  line-height: 1.6;
  background: var(--white);
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }

a { color: inherit; text-decoration: none; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(15, 39, 68, 0.06);
  transition: box-shadow 0.3s;
}

.header.scrolled { box-shadow: var(--shadow); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.logo-brand {
  font-family: 'Playfair Display', serif;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: 0.02em;
}

.logo-sub {
  font-size: 0.65rem;
  color: var(--gray-600);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--gray-600);
  transition: color 0.2s;
}

.nav a:hover,
.nav a.active { color: var(--navy); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-light) 100%);
  color: var(--navy);
  box-shadow: 0 4px 16px rgba(201, 162, 39, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(201, 162, 39, 0.45);
}

.btn-outline {
  background: transparent;
  color: var(--navy);
  border: 2px solid var(--navy);
}

.btn-outline:hover {
  background: var(--navy);
  color: var(--white);
}

.btn-sm {
  padding: 10px 22px;
  font-size: 0.88rem;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--navy);
  margin: 5px 0;
}

/* Hero */
.hero {
  padding: 120px 0 80px;
  background: linear-gradient(160deg, var(--sky) 0%, var(--white) 45%, var(--gray-50) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(184, 223, 245, 0.5) 0%, transparent 70%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--white);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--navy);
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}

.hero-badge svg { color: var(--gold); }

.hero h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  color: var(--navy);
  line-height: 1.2;
  margin-bottom: 20px;
}

.hero-desc {
  font-size: 1.05rem;
  color: var(--gray-600);
  margin-bottom: 28px;
  max-width: 520px;
}

.hero-price {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 28px;
}

.price-current {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--navy);
}

.price-label {
  font-size: 0.85rem;
  color: var(--gray-600);
}

.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 32px; }

.hero-features {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.hero-feature {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--navy-light);
}

.hero-feature svg { flex-shrink: 0; color: var(--gold); }

.hero-visual { position: relative; }

.hero-visual picture,
.hero-visual img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}

.hero-float {
  position: absolute;
  bottom: -16px;
  left: -16px;
  background: var(--white);
  padding: 14px 20px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 12px;
}

.hero-float-icon {
  width: 44px;
  height: 44px;
  background: var(--sky);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.hero-float-text strong {
  display: block;
  font-size: 0.9rem;
  color: var(--navy);
}

.hero-float-text span {
  font-size: 0.75rem;
  color: var(--gray-600);
}

/* Section common */
section { padding: 80px 0; }

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--gold);
  margin-bottom: 12px;
}

.section-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 16px;
  line-height: 1.25;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--gray-600);
  max-width: 640px;
  margin-bottom: 48px;
}

.section-desc.no-margin { margin-bottom: 0; }

/* Technology banner */
.tech-banner {
  background: var(--navy);
  color: var(--white);
  padding: 0;
}

.tech-banner-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 0;
}

.tech-banner-content { padding: 64px 48px 64px 0; }

.tech-banner .section-label { color: var(--gold-light); }
.tech-banner .section-title { color: var(--white); }
.tech-banner .section-desc { color: rgba(255, 255, 255, 0.75); margin-bottom: 0; }

.tech-banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Features grid */
.features { background: var(--gray-50); }

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--white);
  padding: 32px 28px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, var(--sky) 0%, var(--sky-deep) 100%);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--gray-600);
  line-height: 1.65;
}

/* Modes / tags grid */
.modes-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 40px;
}

.mode-item {
  text-align: center;
  padding: 24px 16px;
  background: var(--white);
  border: 2px solid var(--gray-100);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s, background 0.2s;
}

.mode-item:hover {
  border-color: var(--gold);
  background: rgba(201, 162, 39, 0.04);
}

.mode-item strong {
  display: block;
  font-size: 1rem;
  color: var(--navy);
  margin-bottom: 4px;
}

.mode-item span {
  font-size: 0.8rem;
  color: var(--gray-600);
}

/* Product showcase */
.showcase-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: center;
}

.showcase-image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.showcase-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.showcase-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 20px;
  background: var(--gray-50);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
}

.showcase-list li::before {
  content: '✓';
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  background: var(--gold);
  color: var(--navy);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
}

/* Image gallery row */
.gallery-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.gallery-item {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

/* Accessories / alt sections */
.accessories {
  background: linear-gradient(180deg, var(--sky) 0%, var(--white) 100%);
}

.accessories-image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  margin-top: 32px;
}

/* Gift / contents */
.gift-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.gift-contents {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.gift-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: var(--gray-50);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--navy);
}

.gift-item::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--gold);
  border-radius: 50%;
  flex-shrink: 0;
}

/* CTA */
.cta {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  color: var(--white);
  text-align: center;
  padding: 80px 24px;
}

.cta .section-title { color: var(--white); margin-bottom: 12px; }

.cta p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.1rem;
  margin-bottom: 32px;
}

.cta-price {
  font-size: 3rem;
  font-weight: 700;
  color: var(--gold-light);
  margin-bottom: 28px;
}

/* Footer */
.footer {
  background: var(--gray-800);
  color: rgba(255, 255, 255, 0.7);
  padding: 48px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand {
  font-family: 'Playfair Display', serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
}

.footer p { font-size: 0.88rem; line-height: 1.7; }

.footer h4 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.footer-links { list-style: none; }

.footer-links li { margin-bottom: 8px; }

.footer-links a {
  font-size: 0.88rem;
  transition: color 0.2s;
}

.footer-links a:hover { color: var(--gold-light); }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.8rem;
}

/* ===== Homepage catalog ===== */
.home-hero {
  padding: 140px 0 100px;
  text-align: center;
  background: linear-gradient(160deg, var(--sky) 0%, var(--white) 60%);
}

.home-hero h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  color: var(--navy);
  line-height: 1.15;
  margin-bottom: 20px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.home-hero p {
  font-size: 1.15rem;
  color: var(--gray-600);
  max-width: 640px;
  margin: 0 auto 40px;
}

.products-section { background: var(--gray-50); }

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.product-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.3s, box-shadow 0.3s;
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.product-card-image {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--gray-100);
}

.product-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}

.product-card:hover .product-card-image img {
  transform: scale(1.04);
}

.product-card-body {
  padding: 28px 24px 32px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-card-brand {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--gold);
  margin-bottom: 8px;
}

.product-card-body h3 {
  font-family: 'Playfair Display', serif;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.35;
  margin-bottom: 12px;
}

.product-card-body p {
  font-size: 0.9rem;
  color: var(--gray-600);
  line-height: 1.6;
  margin-bottom: 20px;
  flex: 1;
}

.product-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.product-card-price {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--navy);
}

.product-card-price.contact {
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-600);
}

.about-section { background: var(--white); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 32px;
}

.stat-item {
  text-align: center;
  padding: 24px 16px;
  background: var(--gray-50);
  border-radius: var(--radius-sm);
}

.stat-item strong {
  display: block;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 4px;
}

.stat-item span {
  font-size: 0.8rem;
  color: var(--gray-600);
}

/* Breadcrumb */
.breadcrumb {
  padding: 96px 0 0;
  font-size: 0.85rem;
  color: var(--gray-600);
}

.breadcrumb a { color: var(--navy-light); }
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb span { margin: 0 8px; }

/* Responsive */
@media (max-width: 992px) {
  .hero-grid,
  .tech-banner-inner,
  .showcase-grid,
  .gift-grid,
  .about-grid { grid-template-columns: 1fr; }

  .tech-banner-content { padding: 48px 0; }

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

  .modes-grid { grid-template-columns: repeat(2, 1fr); }

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

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

@media (max-width: 768px) {
  .nav { display: none; }

  .nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--white);
    padding: 24px;
    box-shadow: var(--shadow);
    gap: 16px;
    align-items: flex-start;
  }

  .menu-toggle { display: block; }

  .hero { padding: 100px 0 60px; }

  .hero-grid { gap: 32px; }

  .hero-float { display: none; }

  .features-grid,
  .products-grid { grid-template-columns: 1fr; }

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

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

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

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

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

  section { padding: 60px 0; }
}