@media (min-width: 850px) {

  /* Footer: Multi-column layout */
  .footer_custom .col:not(:last-child) .col-inner {
    border-right: 1px solid rgba(255, 255, 255, .08);
    padding-right: 22px;
  }

  .footer_custom .col:not(:first-child) .col-inner {
    padding-left: 22px;
  }
}

/* ===== Tablet: 550px - 849px ===== */
@media (min-width: 550px) and (max-width: 849px) {

  /* Product Detail Page */
  .vq-pdp__top {
    grid-template-columns: 1fr;
  }

  /* VQ Form */
  .vq-form__title {
    font-size: 30px;
  }

  .vq-form__grid {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  /* Shop Hub */
  .shop-hub {
    padding: 32px 0;
  }

  .shop-hub__title {
    font-size: 26px;
  }

  .shop-hub__grid {
    grid-template-columns: 1fr;
  }

  .shop-hub-card__link {
    grid-template-columns: 120px 1fr;
  }

  /* VQ Hero */
  .vq-hero__inner {
    grid-template-columns: 1fr;
  }

  .vq-hero__cards {
    grid-template-columns: 1fr;
  }

  .vq-hero-card--large {
    grid-column: auto;
  }

  /* VQ Solution */
  .vq-solution__grid.cols-2,
  .vq-solution__grid.cols-3 {
    grid-template-columns: 1fr;
  }

  /* Architecture Hero */
  .architechture-hero {
    min-height: 420px;
    padding: 64px 0 56px;
  }

  .architechture-hero__title {
    font-size: 32px;
    max-width: 92%;
  }

  .architechture-hero__desc {
    max-width: 92%;
  }

  .architechture-hero__line {
    height: 42px;
  }

  /* Residential Quick Nav */
  .res-quick-nav__list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  /* VQ Series Grid: 2 columns on tablet */
  .vq-series__grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  /* Bento Grid */
  .bento-grid-row .col-inner {
    padding: 24px 20px;
  }

  .bento-grid-row h3,
  .bento-grid-row .icon-box-text {
    font-size: 1.1rem;
  }

  /* Contact Form */
  .vq-form__title {
    font-size: 30px;
  }

  .vq-form__grid {
    gap: 20px 30px;
  }

  /* Contact Panel */
  .contact-page .contact-detail .col-inner {
    padding: 40px 32px !important;
  }

  /* Commit */
  .commit .year .col-inner {
    width: 160px;
    height: 160px;
  }

  .commit h2 {
    font-size: 32px;
  }

  /* Why Choose Us */
  .why-choose-us .list-items .col-inner {
    padding: 24px 18px !important;
  }

  /* Science */
  .science .desc {
    max-width: 70%;
  }

  /* Standards */
  .standred-list-items .col {
    padding: 24px;
  }
	  .vq-pdp__top {
    padding-left: 10px;
    padding-right: 10px;
    grid-template-columns: 1fr;
  }
	  .vq-related__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
		  padding-left: 10px;
		  padding-right: 10px;
  }
	
}

/* ===== Mobile: max-width 549px ===== */
@media (max-width: 549px) {

  /* Hero Section */
  .hero h1 {
    text-align: center;
  }

  .hero-content-tag {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .hero .section-bg {
    height: 600px;
  }

  .hero-description {
    margin-bottom: 30px;
  }

  .hero a.button {
    display: block;
    margin-top: 10px;
  }

  /* Technical Specs */
  .technical-specs {
    margin-top: -120px;
  }

  /* Science Section */
  .science .desc {
    margin-bottom: 34px;
    color: #333333;
    max-width: 100%;
    text-align: left;
  }

  /* VQ Series Grid: 1 column on mobile */
  .vq-series__grid {
    display: grid;
    grid-template-columns: repeat(1, minmax(0, 1fr));
    gap: 16px;
  }

  .res-quick-nav__list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  .vq-hero__inner {
    grid-template-columns: 1fr;
    margin-top: 20px;
  }

  .shop-hub__grid {
    grid-template-columns: 1fr;
  }
  .vq-pdp__top {
    padding-left: 10px;
    padding-right: 10px;
    grid-template-columns: 1fr;
  }
	
	  .vq-related__grid {
    grid-template-columns: repeat(1, minmax(0, 1fr));
		  padding-left: 10px;
		  padding-right: 10px;
  }
}