/* ============================================================
   ROBOT LOGISTICS LTD — Design System
   Concept: "Cargo Manifest" — the visual language of a shipping
   label / waybill / warehouse floor: dashed tear-lines, corner
   stamps, hazard-stripe dividers, barcode marks, mono tracking
   numbers. Built on a navy / steel-blue / safety-amber / off-white
   palette per brief.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Oswald:wght@400;500;600;700&family=Inter:wght@400;500;600;700;800&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root{
  /* Palette */
  --navy-900:#0B1B2E;
  --navy-800:#122840;
  --navy-700:#16324F;
  --blue-600:#2F6FA3;
  --blue-500:#3E86C2;
  --amber-500:#F5A623;
  --amber-600:#DB8F14;
  --gray-100:#F4F6F8;
  --gray-150:#ECEFF2;
  --gray-300:#D8DEE4;
  --gray-500:#8B97A6;
  --gray-600:#5B6774;
  --charcoal-900:#1D2126;
  --white:#FFFFFF;

  --font-display:'Oswald', sans-serif;
  --font-body:'Inter', sans-serif;
  --font-mono:'IBM Plex Mono', monospace;

  --radius-sm:2px;
  --radius-md:4px;
  --container:1200px;

  --shadow-card: 0 1px 2px rgba(11,27,46,0.06), 0 4px 16px rgba(11,27,46,0.06);
  --shadow-card-hover: 0 2px 4px rgba(11,27,46,0.08), 0 12px 28px rgba(11,27,46,0.12);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--charcoal-900);
  background:var(--gray-100);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:600;
  text-transform:uppercase;
  letter-spacing:0.02em;
  line-height:1.12;
  margin:0 0 .5em;
  color:var(--navy-900);
}
h1{font-size:clamp(2.1rem,4.2vw,3.6rem);}
h2{font-size:clamp(1.6rem,3vw,2.4rem);}
h3{font-size:1.15rem;}
p{margin:0 0 1em;color:var(--gray-600);}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
ul{margin:0;padding:0;}
button{font-family:inherit;cursor:pointer;}

.container{max-width:var(--container);margin:0 auto;padding:0 24px;}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:0.001ms !important;animation-iteration-count:1 !important;transition-duration:0.001ms !important;scroll-behavior:auto !important;}
}

/* ---------- Hazard stripe divider (signature element) ---------- */
.hazard-divider{
  height:10px;
  background:repeating-linear-gradient(
    -45deg,
    var(--amber-500) 0 18px,
    var(--navy-900) 18px 36px
  );
}
.hazard-divider.thin{height:6px;}

/* ---------- Top utility bar ---------- */
.utility-bar{
  background:var(--navy-900);
  color:var(--gray-300);
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.03em;
}
.utility-bar .container{
  display:flex;justify-content:space-between;align-items:center;
  padding-top:8px;padding-bottom:8px;flex-wrap:wrap;gap:6px;
}
.utility-bar a{color:var(--gray-300);}
.utility-bar a:hover{color:var(--amber-500);}
.utility-bar .ubar-left{display:flex;gap:18px;flex-wrap:wrap;}

/* ---------- Header / Nav ---------- */
header.site-header{
  background:var(--white);
  border-bottom:1px solid var(--gray-300);
  position:sticky;top:0;z-index:50;
}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 24px;max-width:var(--container);margin:0 auto;
}
.logo{
  font-family:var(--font-display);
  font-weight:700;
  font-size:1.25rem;
  letter-spacing:.03em;
  color:var(--navy-900);
  display:flex;align-items:center;gap:10px;
}
.logo .logo-mark{
  width:34px;height:34px;background:var(--navy-900);
  display:flex;align-items:center;justify-content:center;
  color:var(--amber-500);font-family:var(--font-mono);font-weight:600;font-size:.7rem;
  border-radius:var(--radius-sm);
}
.logo small{
  display:block;font-family:var(--font-mono);text-transform:none;
  letter-spacing:0;font-size:.62rem;color:var(--gray-500);font-weight:400;
}
nav.main-nav{display:flex;gap:30px;align-items:center;}
nav.main-nav a{
  font-family:var(--font-mono);
  font-size:.8rem;
  text-transform:uppercase;
  letter-spacing:.06em;
  color:var(--navy-700);
  padding:6px 0;
  border-bottom:2px solid transparent;
}
nav.main-nav a:hover, nav.main-nav a.active{border-bottom-color:var(--amber-500);color:var(--navy-900);}
.nav-actions{display:flex;align-items:center;gap:16px;}
.cart-btn{
  position:relative;display:flex;align-items:center;gap:8px;
  background:var(--navy-900);color:var(--white);
  padding:10px 16px;border:none;border-radius:var(--radius-sm);
  font-family:var(--font-mono);font-size:.78rem;letter-spacing:.05em;text-transform:uppercase;
}
.cart-btn:hover{background:var(--blue-600);}
.cart-count{
  background:var(--amber-500);color:var(--navy-900);
  border-radius:50%;min-width:18px;height:18px;display:inline-flex;
  align-items:center;justify-content:center;font-size:.68rem;font-weight:700;padding:0 4px;
}
.mobile-toggle{display:none;background:none;border:none;font-size:1.5rem;color:var(--navy-900);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--radius-sm);
  font-family:var(--font-mono);font-size:.8rem;letter-spacing:.06em;text-transform:uppercase;
  border:2px solid transparent;transition:all .15s ease;
}
.btn-primary{background:var(--amber-500);color:var(--navy-900);border-color:var(--amber-500);font-weight:600;}
.btn-primary:hover{background:var(--amber-600);border-color:var(--amber-600);}
.btn-outline{background:transparent;color:var(--white);border-color:rgba(255,255,255,0.5);}
.btn-outline:hover{border-color:var(--white);}
.btn-dark{background:var(--navy-900);color:var(--white);border-color:var(--navy-900);}
.btn-dark:hover{background:var(--blue-600);border-color:var(--blue-600);}
.btn-block{width:100%;}
.btn:disabled{opacity:.55;cursor:not-allowed;}

/* ---------- Hero (manifest ticket) ---------- */
.hero{
  background:var(--navy-900);
  color:var(--white);
  position:relative;
  overflow:hidden;
  background-image:
    linear-gradient(180deg, rgba(11,27,46,.94), rgba(11,27,46,.98)),
    repeating-linear-gradient(90deg, rgba(255,255,255,0.025) 0 1px, transparent 1px 80px),
    repeating-linear-gradient(0deg, rgba(255,255,255,0.025) 0 1px, transparent 1px 80px);
}
.hero-inner{
  max-width:var(--container);margin:0 auto;padding:88px 24px 70px;
  display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center;
}
.hero-eyebrow{
  font-family:var(--font-mono);color:var(--amber-500);font-size:.78rem;
  letter-spacing:.14em;text-transform:uppercase;margin-bottom:16px;display:flex;align-items:center;gap:10px;
}
.hero-eyebrow::before{content:'';width:24px;height:2px;background:var(--amber-500);}
.hero h1{color:var(--white);margin-bottom:.4em;}
.hero .lede{color:var(--gray-300);font-size:1.08rem;max-width:46ch;margin-bottom:2em;}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap;}
.manifest-card{
  background:var(--white);color:var(--charcoal-900);border-radius:var(--radius-md);
  padding:26px 24px;box-shadow:var(--shadow-card);position:relative;
}
.manifest-card::before{
  content:'';position:absolute;left:0;right:0;top:0;height:6px;
  background:repeating-linear-gradient(-45deg,var(--amber-500) 0 10px,var(--navy-900) 10px 20px);
  border-radius:var(--radius-md) var(--radius-md) 0 0;
}
.manifest-head{
  display:flex;justify-content:space-between;align-items:center;
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.06em;text-transform:uppercase;
  color:var(--gray-500);border-bottom:1px dashed var(--gray-300);padding-bottom:12px;margin-bottom:14px;
}
.manifest-stat{display:flex;justify-content:space-between;padding:9px 0;border-bottom:1px dashed var(--gray-300);font-size:.9rem;}
.manifest-stat:last-child{border-bottom:none;}
.manifest-stat span:first-child{color:var(--gray-600);}
.manifest-stat span:last-child{font-family:var(--font-mono);font-weight:600;color:var(--navy-900);}
.manifest-stamp{
  margin-top:16px;display:inline-flex;align-items:center;gap:8px;
  border:2px solid var(--blue-600);color:var(--blue-600);
  padding:6px 12px;border-radius:var(--radius-sm);
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;
  transform:rotate(-2deg);
}

/* ---------- Sections ---------- */
section{padding:76px 0;}
section.tight{padding:56px 0;}
.section-head{max-width:640px;margin-bottom:44px;}
.section-eyebrow{
  font-family:var(--font-mono);color:var(--blue-600);font-size:.75rem;
  letter-spacing:.14em;text-transform:uppercase;margin-bottom:10px;
}
.bg-dark{background:var(--navy-900);color:var(--white);}
.bg-dark h2, .bg-dark h3{color:var(--white);}
.bg-dark p{color:var(--gray-300);}
.bg-white{background:var(--white);}

/* ---------- Feature / value cards ---------- */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.feature-card{
  background:var(--white);border:1px solid var(--gray-300);border-radius:var(--radius-md);
  padding:28px 22px;transition:box-shadow .15s ease, transform .15s ease;
}
.feature-card:hover{box-shadow:var(--shadow-card-hover);transform:translateY(-3px);}
.feature-icon{
  width:46px;height:46px;border-radius:var(--radius-sm);background:var(--navy-900);
  color:var(--amber-500);display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.feature-card h3{margin-bottom:.4em;font-size:1.02rem;}
.feature-card p{font-size:.92rem;margin-bottom:0;}

/* ---------- Steps ---------- */
.steps-row{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative;}
.step{position:relative;padding:0 20px 0 0;}
.step-num{
  font-family:var(--font-mono);font-size:.72rem;color:var(--amber-500);
  border:1px solid var(--amber-500);width:30px;height:30px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.step h3{font-size:1rem;color:var(--white);}
.step p{font-size:.88rem;}

/* ---------- Product grid / cards ---------- */
.toolbar{
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;
  margin-bottom:30px;padding-bottom:20px;border-bottom:1px solid var(--gray-300);
}
.filter-chips{display:flex;flex-wrap:wrap;gap:8px;}
.chip{
  font-family:var(--font-mono);font-size:.74rem;letter-spacing:.04em;text-transform:uppercase;
  padding:8px 14px;border:1px solid var(--gray-300);border-radius:20px;background:var(--white);color:var(--gray-600);
}
.chip.active, .chip:hover{border-color:var(--navy-900);color:var(--navy-900);background:var(--gray-150);}
.result-count{font-family:var(--font-mono);font-size:.78rem;color:var(--gray-500);}

.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.product-card{
  background:var(--white);border:1px solid var(--gray-300);border-radius:var(--radius-md);
  overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .15s ease, transform .15s ease;
}
.product-card:hover{box-shadow:var(--shadow-card-hover);transform:translateY(-3px);}
.product-media{
  aspect-ratio:1/1;background:var(--gray-150);position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:center;
}
.product-media img{width:100%;height:100%;object-fit:cover;}
.product-tag{
  position:absolute;top:10px;left:10px;background:var(--navy-900);color:var(--amber-500);
  font-family:var(--font-mono);font-size:.62rem;letter-spacing:.06em;text-transform:uppercase;
  padding:4px 8px;border-radius:2px;
}
.product-body{padding:16px 16px 18px;display:flex;flex-direction:column;gap:8px;flex:1;}
.product-sku{font-family:var(--font-mono);font-size:.66rem;color:var(--gray-500);letter-spacing:.05em;}
.product-card h3{font-size:.94rem;text-transform:none;letter-spacing:0;font-family:var(--font-body);font-weight:700;color:var(--navy-900);}
.product-desc{font-size:.82rem;color:var(--gray-600);flex:1;}
.product-foot{display:flex;justify-content:space-between;align-items:center;margin-top:6px;}
.product-price{font-family:var(--font-mono);font-weight:600;font-size:1.05rem;color:var(--navy-900);}
.add-btn{
  background:var(--navy-900);color:var(--white);border:none;border-radius:var(--radius-sm);
  padding:9px 14px;font-family:var(--font-mono);font-size:.72rem;letter-spacing:.05em;text-transform:uppercase;
}
.add-btn:hover{background:var(--amber-500);color:var(--navy-900);}

.skeleton{background:linear-gradient(90deg,var(--gray-150) 25%,var(--gray-300) 37%,var(--gray-150) 63%);background-size:400% 100%;animation:skeleton-loading 1.4s ease infinite;}
@keyframes skeleton-loading{0%{background-position:100% 50%}100%{background-position:0 50%}}
.skeleton-card{height:340px;border-radius:var(--radius-md);}

.empty-state{
  text-align:center;padding:60px 20px;border:1px dashed var(--gray-300);border-radius:var(--radius-md);
  font-family:var(--font-mono);color:var(--gray-500);
}

/* ---------- Testimonials ---------- */
.testimonial-card{
  background:var(--navy-800);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius-md);
  padding:26px 24px;
}
.testimonial-card p{color:var(--gray-300);font-style:italic;}
.testimonial-meta{display:flex;justify-content:space-between;align-items:center;margin-top:16px;font-family:var(--font-mono);font-size:.75rem;}
.testimonial-meta strong{color:var(--white);display:block;font-family:var(--font-body);font-style:normal;}
.testimonial-meta span{color:var(--gray-500);}
.stars{color:var(--amber-500);letter-spacing:2px;}

/* ---------- CTA banner ---------- */
.cta-banner{
  background:linear-gradient(90deg,var(--navy-900),var(--blue-600));
  color:var(--white);padding:56px 0;text-align:center;
}
.cta-banner h2{color:var(--white);}
.cta-banner p{color:var(--gray-300);max-width:50ch;margin:0 auto 28px;}

/* ---------- Footer ---------- */
footer.site-footer{background:var(--navy-900);color:var(--gray-300);padding:60px 0 0;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px;}
.footer-grid h4{color:var(--white);font-size:.85rem;letter-spacing:.06em;margin-bottom:16px;}
.footer-grid ul li{margin-bottom:10px;}
.footer-grid a{color:var(--gray-300);font-size:.88rem;}
.footer-grid a:hover{color:var(--amber-500);}
.footer-about p{font-size:.88rem;color:var(--gray-500);max-width:34ch;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:18px 0;
  font-family:var(--font-mono);font-size:.72rem;color:var(--gray-500);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;
}

/* ---------- Generic page hero (inner pages) ---------- */
.page-hero{background:var(--navy-900);color:var(--white);padding:56px 0 44px;}
.page-hero .section-eyebrow{color:var(--amber-500);}
.page-hero h1{color:var(--white);margin-bottom:.3em;}
.page-hero p{color:var(--gray-300);max-width:60ch;}
.breadcrumb{font-family:var(--font-mono);font-size:.72rem;color:var(--gray-500);margin-bottom:14px;}
.breadcrumb a{color:var(--gray-300);}

/* ---------- Content blocks (about/legal) ---------- */
.prose{max-width:800px;}
.prose h2{margin-top:1.6em;font-size:1.3rem;}
.prose h3{font-size:1.05rem;text-transform:none;letter-spacing:0;color:var(--navy-900);}
.prose ul{margin:0 0 1.2em 1.2em;list-style:disc;color:var(--gray-600);}
.prose li{margin-bottom:.5em;}
.legal-meta{font-family:var(--font-mono);font-size:.78rem;color:var(--gray-500);margin-bottom:2em;}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;}
.contact-info-card{background:var(--white);border:1px solid var(--gray-300);border-radius:var(--radius-md);padding:26px;margin-bottom:16px;}
.contact-info-card h3{font-size:.85rem;color:var(--gray-500);letter-spacing:.06em;}
.contact-info-card p{margin-bottom:0;font-weight:600;color:var(--navy-900);}
.form-field{margin-bottom:18px;}
.form-field label{display:block;font-family:var(--font-mono);font-size:.72rem;letter-spacing:.05em;text-transform:uppercase;color:var(--gray-600);margin-bottom:8px;}
.form-field input, .form-field textarea, .form-field select{
  width:100%;padding:12px 14px;border:1px solid var(--gray-300);border-radius:var(--radius-sm);
  font-family:var(--font-body);font-size:.92rem;background:var(--white);color:var(--charcoal-900);
}
.form-field input:focus, .form-field textarea:focus, .form-field select:focus{outline:2px solid var(--blue-600);outline-offset:1px;border-color:var(--blue-600);}
.form-field textarea{resize:vertical;min-height:120px;}

/* ---------- FAQ accordion ---------- */
.faq-item{border-bottom:1px solid var(--gray-300);}
.faq-q{
  width:100%;background:none;border:none;text-align:left;padding:20px 0;
  display:flex;justify-content:space-between;align-items:center;gap:16px;
  font-family:var(--font-body);font-weight:700;font-size:1rem;color:var(--navy-900);
}
.faq-q .icon{font-family:var(--font-mono);color:var(--amber-600);font-size:1.2rem;flex-shrink:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;}
.faq-a p{padding-bottom:18px;margin-bottom:0;}
.faq-item.open .faq-a{max-height:400px;}
.faq-item.open .icon{transform:rotate(45deg);}
.faq-cats{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:30px;}

/* ---------- Product detail ---------- */
.product-detail{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:start;}
.pd-media{background:var(--white);border:1px solid var(--gray-300);border-radius:var(--radius-md);aspect-ratio:1/1;display:flex;align-items:center;justify-content:center;overflow:hidden;}
.pd-media img{width:100%;height:100%;object-fit:cover;}
.pd-sku{font-family:var(--font-mono);font-size:.75rem;color:var(--gray-500);margin-bottom:10px;}
.pd-price{font-family:var(--font-mono);font-size:1.8rem;font-weight:600;color:var(--navy-900);margin:14px 0;}
.qty-row{display:flex;align-items:center;gap:14px;margin:20px 0;}
.qty-control{display:flex;align-items:center;border:1px solid var(--gray-300);border-radius:var(--radius-sm);}
.qty-control button{background:none;border:none;width:38px;height:40px;font-size:1rem;color:var(--navy-900);}
.qty-control button:hover{background:var(--gray-150);}
.qty-control input{width:44px;text-align:center;border:none;font-family:var(--font-mono);font-size:.95rem;}
.pd-meta-list{border-top:1px dashed var(--gray-300);margin-top:24px;padding-top:16px;}
.pd-meta-row{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px dashed var(--gray-300);font-size:.86rem;}
.trust-row{display:flex;gap:22px;margin-top:26px;flex-wrap:wrap;}
.trust-item{display:flex;align-items:center;gap:8px;font-size:.78rem;color:var(--gray-600);font-family:var(--font-mono);}

/* ---------- Cart drawer ---------- */
.cart-overlay{
  position:fixed;inset:0;background:rgba(11,27,46,.5);z-index:100;
  opacity:0;pointer-events:none;transition:opacity .2s ease;
}
.cart-overlay.open{opacity:1;pointer-events:auto;}
.cart-drawer{
  position:fixed;top:0;right:0;bottom:0;width:420px;max-width:92vw;
  background:var(--white);z-index:101;box-shadow:-8px 0 30px rgba(0,0,0,.2);
  transform:translateX(100%);transition:transform .25s ease;
  display:flex;flex-direction:column;
}
.cart-drawer.open{transform:translateX(0);}
.cart-drawer-head{
  display:flex;justify-content:space-between;align-items:center;
  padding:20px 22px;border-bottom:1px solid var(--gray-300);
}
.cart-drawer-head h3{margin:0;font-size:1rem;}
.cart-close{background:none;border:none;font-size:1.3rem;color:var(--gray-600);}
.cart-items{flex:1;overflow-y:auto;padding:12px 22px;}
.cart-line{display:flex;gap:12px;padding:16px 0;border-bottom:1px solid var(--gray-150);}
.cart-line img{width:64px;height:64px;object-fit:cover;border-radius:var(--radius-sm);background:var(--gray-150);}
.cart-line-info{flex:1;}
.cart-line-info h4{font-size:.85rem;margin:0 0 4px;font-family:var(--font-body);text-transform:none;letter-spacing:0;color:var(--navy-900);}
.cart-line-price{font-family:var(--font-mono);font-size:.8rem;color:var(--gray-600);}
.cart-line-actions{display:flex;align-items:center;gap:10px;margin-top:8px;}
.cart-line-remove{font-family:var(--font-mono);font-size:.7rem;color:var(--gray-500);text-decoration:underline;background:none;border:none;}
.cart-empty{padding:60px 0;text-align:center;color:var(--gray-500);font-family:var(--font-mono);font-size:.85rem;}
.cart-footer{padding:20px 22px;border-top:1px solid var(--gray-300);}
.cart-subtotal{display:flex;justify-content:space-between;font-family:var(--font-mono);font-size:1rem;font-weight:600;margin-bottom:16px;}

.toast{
  position:fixed;bottom:24px;right:24px;background:var(--navy-900);color:var(--white);
  padding:14px 20px;border-radius:var(--radius-sm);font-family:var(--font-mono);font-size:.8rem;
  box-shadow:var(--shadow-card-hover);z-index:200;transform:translateY(20px);opacity:0;
  transition:all .2s ease;display:flex;align-items:center;gap:10px;
}
.toast.show{transform:translateY(0);opacity:1;}
.toast .icon{color:var(--amber-500);}

/* ---------- Success / Cancel pages ---------- */
.status-page{padding:100px 0;text-align:center;}
.status-icon{
  width:76px;height:76px;border-radius:50%;margin:0 auto 24px;
  display:flex;align-items:center;justify-content:center;font-size:2rem;
}
.status-icon.success{background:#1E7A44;color:var(--white);}
.status-icon.cancel{background:var(--gray-300);color:var(--gray-600);}
.order-ref{font-family:var(--font-mono);color:var(--gray-500);font-size:.85rem;margin-bottom:32px;}

/* ---------- Utility ---------- */
.center{text-align:center;margin-left:auto;margin-right:auto;}
.mt-0{margin-top:0;}
.mb-0{margin-bottom:0;}

/* ---------- Responsive ---------- */
@media (max-width:980px){
  .hero-inner{grid-template-columns:1fr;}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .product-grid{grid-template-columns:repeat(3,1fr);}
  .steps-row{grid-template-columns:repeat(2,1fr);gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .product-detail{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;}
}
@media (max-width:720px){
  nav.main-nav{position:fixed;top:69px;left:0;right:0;background:var(--white);flex-direction:column;
    align-items:flex-start;padding:20px 24px;border-bottom:1px solid var(--gray-300);
    transform:translateY(-130%);transition:transform .2s ease;z-index:40;gap:14px;}
  nav.main-nav.open{transform:translateY(0);}
  .mobile-toggle{display:block;}
  .grid-4, .grid-3, .grid-2{grid-template-columns:1fr;}
  .product-grid{grid-template-columns:repeat(2,1fr);}
  .steps-row{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .cart-drawer{width:100vw;}
  .utility-bar .ubar-left{display:none;}
}
@media (max-width:480px){
  .product-grid{grid-template-columns:1fr;}
}