:root {
  --primary: #d50000;
  --primary-dark: #b00000;
  --secondary: #ffc400;
  --bg: #f5f5f5;
  --text: #1f2933;
  --muted: #6b7280;
}

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

body{
  font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--text);
}

.app{
  max-width:480px;
  margin:0 auto;
  min-height:100vh;
  background:#fff;
  display:flex;
  flex-direction:column;
}

@media(min-width:768px){
  .app{
    max-width:720px;
    border-radius:16px;
    overflow:hidden;
    box-shadow:0 16px 40px rgba(0,0,0,.18);
    margin:1.5rem auto;
  }
}

/* HEADER */

.header{
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  color:#fff;
  padding:.6rem .9rem .7rem;
  position:sticky;
  top:0;
  z-index:10;
}

.header-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:.5rem;
}

.header-left,
.header-right{
  display:flex;
  align-items:center;
  gap:.6rem;
}

.menu-icon{
  width:30px;
  height:30px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.7);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:1rem;
  background:rgba(255,255,255,.08);
  backdrop-filter:blur(4px);
}

.logo-mini{
  width:44px;
  height:34px;
  border-radius:8px;
  background:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:.7rem;
  font-weight:800;
  color:var(--primary);
}

.logo-block{display:flex;flex-direction:column;}
.logo-name{font-weight:800;font-size:.9rem;letter-spacing:.08em;text-transform:uppercase;}
.logo-sub{font-size:.66rem;opacity:.9;}

.search-bar{
  margin-top:.55rem;
  background:#fff;
  border-radius:999px;
  padding:.35rem .8rem;
  display:flex;
  align-items:center;
  gap:.5rem;
  box-shadow:0 4px 12px rgba(0,0,0,.15);
}

.search-bar input{
  border:none;
  outline:none;
  flex:1;
  font-size:.85rem;
}

/* SLIDER PRINCIPAL */

.slider{
  position:relative;
  overflow:hidden;
  border-radius:14px;
  margin-top:.85rem;
  margin-bottom:1rem;
  box-shadow:0 10px 25px rgba(0,0,0,.18);
}

.slider-track{
  display:flex;
  transition:transform .35s ease;
}

.slide{
  min-width:100%;
  padding:.9rem .95rem 1rem;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:.9rem;
  color:#1f2933;
}

.slide-1{background:var(--secondary);}
.slide-2{background:#ffe5e5;}
.slide-3{background:#e3f2fd;}

.slide-text{font-size:.86rem;max-width:70%;}
.slide-text strong{display:block;font-size:1rem;margin-bottom:.15rem;}
.slide-emoji{font-size:2.4rem;}

.slider-controls{
  position:absolute;
  inset:0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  pointer-events:none;
  padding:0 .25rem;
}

.slider-btn{
  width:26px;
  height:26px;
  border-radius:999px;
  background:rgba(0,0,0,.45);
  color:#fff;
  border:none;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:.8rem;
  pointer-events:auto;
}

/* SECCIONES Y CHIPS */

main{flex:1;padding:.75rem .9rem 1.2rem;}

.section-title{font-size:.85rem;font-weight:600;margin-bottom:.35rem;}

.section-header{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  margin-bottom:.45rem;
}

.section-header h1,
.section-header h2{font-size:.98rem;}
.section-header a{font-size:.78rem;color:var(--primary);text-decoration:none;font-weight:500;}

.categories-scroll{
  display:flex;
  gap:.4rem;
  overflow-x:auto;
  padding-bottom:.45rem;
  margin-bottom:.8rem;
}

.chip{
  flex:0 0 auto;
  padding:.3rem .75rem;
  border-radius:999px;
  border:1px solid #e5e7eb;
  background:#fff;
  font-size:.75rem;
  white-space:nowrap;
}

.chip--primary{
  background:#fee2e2;
  border-color:#fecaca;
  color:#b91c1c;
}

/* PRODUCTOS */

.product-list{display:flex;flex-direction:column;gap:.7rem;}

.product-card{
  border-radius:12px;
  border:1px solid #e5e7eb;
  background:#fff;
  padding:.6rem;
  display:grid;
  grid-template-columns:88px 1fr;
  gap:.7rem;
  box-shadow:0 8px 18px rgba(15,23,42,.07);
}

.product-image{
  width:100%;
  height:88px;
  border-radius:10px;
  background:linear-gradient(135deg,#ffe082,#ffab91);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:2.2rem;
}

.product-info{display:flex;flex-direction:column;justify-content:space-between;}

.product-name{font-size:.92rem;font-weight:650;}
.product-desc{font-size:.76rem;color:var(--muted);margin-top:.18rem;}

.product-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-top:.25rem;
}

.price{font-weight:800;color:var(--primary-dark);font-size:.92rem;}
.age{font-size:.72rem;color:var(--muted);}

.btn-small{
  margin-top:.25rem;
  border-radius:999px;
  border:1px solid #d1d5db;
  background:#f9fafb;
  font-size:.76rem;
  padding:.27rem .8rem;
  display:inline-flex;
  align-items:center;
  gap:.25rem;
}

/* GRID en TIENDA */

.product-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:.7rem;
}
.product-card--grid{grid-template-columns:1fr;}

/* RESUMEN / TEXTO */

.summary-card{
  border-radius:12px;
  border:1px solid #e5e7eb;
  background:#fff;
  padding:.8rem;
  margin-top:.55rem;
  box-shadow:0 8px 18px rgba(15,23,42,.06);
}

.summary-row{
  display:flex;
  justify-content:space-between;
  font-size:.82rem;
  margin-bottom:.28rem;
}

.summary-row.total{
  font-weight:750;
  border-top:1px solid #e5e7eb;
  padding-top:.38rem;
  margin-top:.3rem;
}

.btn-primary{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.3rem;
  background:var(--primary);
  color:#fff;
  border-radius:999px;
  padding:.5rem 1.3rem;
  font-size:.86rem;
  border:none;
  cursor:pointer;
}

.btn-primary--outline{
  background:#fff;
  color:var(--primary);
  border:1px solid var(--primary);
}

.form{display:flex;flex-direction:column;gap:.6rem;margin-top:.3rem;}
.form-group{display:flex;flex-direction:column;gap:.2rem;}
.form-group label{font-size:.76rem;}
.form-group input,
.form-group textarea{
  border-radius:9px;
  border:1px solid #d1d5db;
  padding:.42rem .6rem;
  font-size:.8rem;
}
.form-group textarea{min-height:90px;resize:vertical;}

.footer{
  background:var(--primary-dark);
  color:#fff;
  padding:.45rem .4rem .6rem;
  margin-top:auto;
}

.footer-nav{
  display:flex;
  justify-content:space-around;
  align-items:center;
  font-size:.72rem;
  margin-bottom:.25rem;
}

.footer-nav a{color:#fff;text-decoration:none;}
.footer-copy{text-align:center;font-size:.66rem;opacity:.9;}

.mt-sm{margin-top:.45rem;}
.mt-md{margin-top:.75rem;}
.text-block{font-size:.8rem;color:var(--muted);margin-bottom:.7rem;}
.page-title{font-size:1.02rem;font-weight:750;margin-bottom:.5rem;}

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• [F] styles.css
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