*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --primary: #FF6B35; --primary-dark: #E55A2B; --secondary: #004E89;
  --dark: #0D1117; --dark-2: #161B22; --dark-3: #21262D;
  --light: #F6F8FA; --gray: #8B949E; --gray-light: #D0D7DE; --white: #FFF;
  --success: #2EA043; --danger: #DA3633;
  --gradient: linear-gradient(135deg, #FF6B35 0%, #FF8C42 100%);
  --radius: 12px; --radius-sm: 8px;
  --shadow: 0 2px 8px rgba(0,0,0,0.08); --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
  --transition: 0.3s ease;
}
html { scroll-behavior: smooth; }
body { font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif; color: var(--dark); background: var(--white); line-height: 1.6; -webkit-font-smoothing: antialiased; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
.header { position: sticky; top: 0; z-index: 1000; background: var(--white); border-bottom: 1px solid var(--gray-light); box-shadow: var(--shadow); }
.header-content { display: flex; align-items: center; justify-content: space-between; height: 70px; gap: 20px; }
.logo { display: flex; align-items: center; gap: 8px; font-weight: 800; font-size: 1.4rem; flex-shrink: 0; }
.logo-icon { font-size: 1.5rem; }
.logo-text { color: var(--dark); }
.logo-accent { color: var(--primary); }
.nav { display: flex; gap: 28px; }
.nav-link { font-weight: 500; font-size: 0.95rem; color: var(--dark-2); transition: var(--transition); position: relative; }
.nav-link:hover, .nav-link.active { color: var(--primary); }
.nav-link.active::after { content: ''; position: absolute; bottom: -4px; left: 0; right: 0; height: 2px; background: var(--primary); border-radius: 2px; }
.header-actions { display: flex; align-items: center; gap: 12px; }
.btn-icon { background: var(--light); border: none; width: 40px; height: 40px; border-radius: 50%; cursor: pointer; font-size: 1.1rem; transition: var(--transition); }
.btn-icon:hover { background: var(--gray-light); }
.hamburger { display: none; flex-direction: column; gap: 4px; background: none; border: none; cursor: pointer; padding: 8px; }
.hamburger span { width: 24px; height: 3px; background: var(--dark); border-radius: 2px; transition: var(--transition); }
.search-bar { display: none; padding: 16px 0; background: var(--light); border-bottom: 1px solid var(--gray-light); }
.search-bar.active { display: block; }
.search-bar .container { display: flex; gap: 12px; }
.search-bar input { flex: 1; padding: 12px 16px; border: 2px solid var(--gray-light); border-radius: var(--radius-sm); font-size: 1rem; font-family: inherit; outline: none; transition: var(--transition); }
.search-bar input:focus { border-color: var(--primary); }
.btn-primary { background: var(--gradient); color: var(--white); border: none; padding: 12px 24px; border-radius: var(--radius-sm); font-weight: 600; font-size: 0.95rem; cursor: pointer; transition: var(--transition); font-family: inherit; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(255,107,53,0.4); }
.btn-large { padding: 16px 32px; font-size: 1.05rem; }
.hero { background: linear-gradient(180deg, #FFF5F0 0%, #FFFFFF 100%); padding: 80px 0 60px; text-align: center; }
.hero-title { font-size: 3.5rem; font-weight: 900; line-height: 1.1; letter-spacing: -1px; margin-bottom: 20px; }
.gradient-text { background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-subtitle { font-size: 1.2rem; color: var(--gray); max-width: 600px; margin: 0 auto 32px; }
.hero-search { display: flex; max-width: 600px; margin: 0 auto 40px; gap: 12px; }
.hero-search-input { flex: 1; padding: 16px 20px; border: 2px solid var(--gray-light); border-radius: var(--radius-sm); font-size: 1rem; font-family: inherit; outline: none; transition: var(--transition); }
.hero-search-input:focus { border-color: var(--primary); }
.hero-stats { display: flex; justify-content: center; gap: 48px; flex-wrap: wrap; }
.stat { text-align: center; }
.stat-number { display: block; font-size: 2rem; font-weight: 800; color: var(--primary); }
.stat-label { font-size: 0.85rem; color: var(--gray); text-transform: uppercase; letter-spacing: 0.5px; }
.section { padding: 64px 0; }
.section-alt { background: var(--light); }
.section-header { text-align: center; margin-bottom: 40px; }
.section-title { font-size: 2rem; font-weight: 800; margin-bottom: 8px; }
.section-subtitle { color: var(--gray); font-size: 1.1rem; }
.section-link { color: var(--primary); font-weight: 600; font-size: 0.95rem; transition: var(--transition); }
.section-link:hover { color: var(--primary-dark); }
.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 24px; }
.product-card { background: var(--white); border: 1px solid var(--gray-light); border-radius: var(--radius); overflow: hidden; transition: var(--transition); cursor: pointer; }
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--primary); }
.product-image { width: 100%; height: 200px; background: var(--light); display: flex; align-items: center; justify-content: center; font-size: 4rem; overflow: hidden; }
.product-info { padding: 16px; }
.product-brand { font-size: 0.75rem; font-weight: 600; color: var(--gray); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 4px; }
.product-name { font-size: 1rem; font-weight: 600; margin-bottom: 12px; line-height: 1.3; }
.product-prices { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.price-low { font-size: 1.4rem; font-weight: 800; color: var(--success); }
.price-original { font-size: 0.9rem; color: var(--gray); text-decoration: line-through; }
.price-compare-btn { display: block; text-align: center; background: var(--light); color: var(--dark); padding: 10px; border-radius: var(--radius-sm); font-weight: 600; font-size: 0.9rem; transition: var(--transition); }
.product-card:hover .price-compare-btn { background: var(--gradient); color: var(--white); }
.price-drop-badge { display: inline-block; background: #FFF0E5; color: var(--primary); font-size: 0.75rem; font-weight: 700; padding: 4px 8px; border-radius: 6px; margin-bottom: 8px; }
.brand-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 20px; }
.brand-card { background: var(--white); border: 2px solid var(--gray-light); border-radius: var(--radius); padding: 28px 20px; text-align: center; transition: var(--transition); }
.brand-card:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.brand-logo { font-size: 1.4rem; font-weight: 800; margin-bottom: 8px; }
.brand-count { font-size: 0.85rem; color: var(--gray); }
.category-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 20px; }
.category-card { background: var(--white); border: 1px solid var(--gray-light); border-radius: var(--radius); padding: 32px 20px; text-align: center; transition: var(--transition); display: flex; flex-direction: column; align-items: center; gap: 8px; }
.category-card:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.category-icon { font-size: 2.5rem; }
.category-name { font-size: 1.1rem; font-weight: 700; }
.category-count { font-size: 0.85rem; color: var(--gray); }
.how-it-works-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.how-card { text-align: center; padding: 32px 20px; }
.how-number { width: 56px; height: 56px; background: var(--gradient); color: var(--white); font-size: 1.5rem; font-weight: 800; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; }
.how-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 8px; }
.how-card p { color: var(--gray); font-size: 0.95rem; }
.cta-section { background: var(--gradient); padding: 64px 0; text-align: center; }
.cta-title { color: var(--white); font-size: 2.2rem; font-weight: 800; margin-bottom: 12px; }
.cta-subtitle { color: rgba(255,255,255,0.9); font-size: 1.1rem; margin-bottom: 32px; }
.cta-form { display: flex; max-width: 500px; margin: 0 auto; gap: 12px; }
.cta-input { flex: 1; padding: 16px 20px; border: none; border-radius: var(--radius-sm); font-size: 1rem; font-family: inherit; outline: none; }
.cta-note { color: rgba(255,255,255,0.7); font-size: 0.85rem; margin-top: 16px; }
.cta-form .btn-primary { background: var(--dark); }
.cta-form .btn-primary:hover { background: var(--dark-2); }
.footer { background: var(--dark); color: var(--gray-light); padding: 64px 0 32px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-col h4 { color: var(--white); font-size: 1rem; font-weight: 700; margin-bottom: 16px; }
.footer-col a { display: block; color: var(--gray); font-size: 0.9rem; margin-bottom: 8px; transition: var(--transition); }
.footer-col a:hover { color: var(--primary); }
.footer-desc { font-size: 0.9rem; margin-top: 12px; line-height: 1.6; }
.footer .logo-text { color: var(--white); }
.footer-bottom { border-top: 1px solid var(--dark-3); padding-top: 24px; display: flex; justify-content: space-between; font-size: 0.85rem; color: var(--gray); }
@media (max-width: 968px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 768px) {
  .nav { display: none; position: absolute; top: 70px; left: 0; right: 0; background: var(--white); flex-direction: column; padding: 20px; border-bottom: 1px solid var(--gray-light); box-shadow: var(--shadow-lg); }
  .nav.active { display: flex; }
  .hamburger { display: flex; }
  .hero-title { font-size: 2.2rem; }
  .hero-subtitle { font-size: 1rem; }
  .hero-search { flex-direction: column; }
  .how-it-works-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 24px; }
  .stat-number { font-size: 1.5rem; }
  .cta-form { flex-direction: column; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .section-title { font-size: 1.6rem; }
}
@media (max-width: 480px) {
  .hero-title { font-size: 1.8rem; }
  .product-grid { grid-template-columns: 1fr; }
  .brand-grid { grid-template-columns: 1fr 1fr; }
  .category-grid { grid-template-columns: 1fr 1fr; }
}