.whatsapp-fab {
  background-color: #25d366;
  background-image: url("images/whatsapp.svg");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 29px 29px;
  color: transparent;
  font-size: 0;
  box-shadow: 0 10px 28px rgba(0, 0, 0, .55), 0 0 0 1px rgba(255, 255, 255, .14);
}

.whatsapp-fab:hover {
  background-color: #20bd5a;
  transform: translateY(-2px);
}

@media (max-width: 600px) {
  body { font-size: 14px; line-height: 1.65; }
  .site-header { height: 68px; padding: 0 16px; }
  .brand, .brand img { max-width: 128px; }
  .menu-toggle { min-width: 68px; min-height: 42px; border-radius: 4px; }
  .nav-links { left: 10px; right: 10px; top: 68px; max-height: calc(100vh - 78px); overflow-y: auto; padding: 10px; gap: 3px; box-shadow: 0 18px 45px #000; }
  .nav-links a, .nav-links button { width: 100%; min-height: 44px; text-align: left; }
  .nav-links .btn { justify-content: flex-start; }
  .hero { padding: 48px 18px 55px; overflow: hidden; }
  .hero h1 { font-size: clamp(39px, 11.4vw, 52px); line-height: 1.02; }
  .hero-copy { margin: 22px 0; font-size: 15px; }
  .hero-actions { display: grid; grid-template-columns: 1fr; }
  .hero-actions .btn { width: 100%; min-height: 50px; }
  .capability-strip { margin-top: 34px; display: grid; grid-template-columns: 1fr 1fr; gap: 0; }
  .capability-strip li { min-height: 36px; display: flex; align-items: center; padding: 0 8px; border-right: 0; border-bottom: 1px solid var(--line); }
  .hero-visual { width: 112%; height: 365px; margin-left: -6%; transform: scale(.84); transform-origin: top center; }
  .section { padding: 64px 18px; }
  .section-rule { margin-bottom: 38px; }
  .section-heading h2, .engineering-copy h2, .about h2, .quote-intro h2 { font-size: 38px; line-height: 1.04; }
  .product-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 7px; border: 0; }
  .product-card { min-width: 0; min-height: 0; padding: 8px; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
  .product-card:hover, .product-card:focus-within { transform: none; }
  .product-media { margin: -8px -8px 8px; border-radius: 5px 5px 0 0; }
  .product-card small, .product-card p, .product-card .product-spec, .product-card .product-enquire { display: none; }
  .product-card h3 { margin: 3px 0 2px; font-size: 12px; line-height: 1.2; letter-spacing: -.02em; overflow-wrap: anywhere; }
  .filter-tab { min-height: 40px; padding: 9px 13px; }
  .search-box { height: 50px; }
  .quote-panel { padding: 22px; }
  .inline-spec-form input, .inline-spec-form textarea, .modal input, .modal textarea { min-height: 48px; font-size: 16px; }
  .modal-dialog { width: calc(100% - 20px); margin: 10px auto; padding: 26px 20px; max-height: calc(100vh - 20px); }
  footer { padding: 38px 18px 95px; }
  .whatsapp-fab { right: 16px; bottom: 16px; width: 54px; height: 54px; }

  .request-shell { padding-left: 16px; padding-right: 16px; }
  .booking-meta { overflow: hidden; white-space: nowrap; }
  .request-layout { gap: 26px; }
  .meeting-request-form { gap: 12px; }
  .request-block { padding: 20px 16px; }
  .meeting-request-form input, .meeting-request-form textarea, .meeting-request-form select { min-height: 50px; font-size: 16px; }
  .choice-row { display: grid; grid-template-columns: 1fr 1fr; }
  .choice-row button { min-height: 48px; }
  .schedule-picker { padding: 16px; gap: 18px; }
  .quick-times button { min-height: 49px; }
  .confirmation-actions { display: grid; }
  .confirmation-actions .btn { width: 100%; }
  .confirmation-card { padding: 20px; }
  .confirmation-card dl div { grid-template-columns: 110px 1fr; gap: 14px; }

  .pack-hero { padding: 46px 18px; }
  .pack-hero h1 { font-size: 42px; line-height: 1; }
  .pack-section { padding: 62px 18px; }
  .packaging-page h2 { font-size: 38px; }
  .type-scroll, .style-scroll { margin-right: -18px; scroll-snap-type: x proximity; }
  .type-card, .style-scroll article { scroll-snap-align: start; }
  .quote-guide form { padding: 20px 16px; }
  .quote-guide input, .quote-guide select, .quote-guide textarea { min-height: 49px; font-size: 16px; }

  .product-detail { padding: 28px 16px 75px; }
  .detail-layout { gap: 35px; }
  .product-showcase h1 { font-size: 38px; }
  .enquiry-sheet { padding: 22px 16px; }
  .enquiry-sheet h2 { font-size: 34px; }
  .enquiry-sheet input, .enquiry-sheet select, .enquiry-sheet textarea { min-height: 50px; font-size: 16px; }
  .submit-enquiry { min-height: 56px; }

  /* Compact phone layout outside the product catalogue */
  .hero { padding-top: 34px; padding-bottom: 38px; gap: 12px; }
  .hero h1 { font-size: 34px; line-height: 1.04; }
  .eyebrow, .section-kicker { margin-bottom: 14px; font-size: 8px; }
  .hero-copy { margin: 17px 0; font-size: 13px; }
  .hero-actions .btn { min-height: 44px; }
  .capability-strip { margin-top: 24px; }
  .capability-strip li { min-height: 31px; font-size: 8px; }
  .hero-visual { height: 275px; transform: scale(.68); margin-bottom: -70px; }

  .section { padding-top: 48px; padding-bottom: 48px; }
  .section-rule { margin-bottom: 28px; }
  .section-heading { margin-bottom: 30px; gap: 12px; }
  .section-heading h2, .engineering-copy h2, .about h2, .quote-intro h2,
  .company-intro-grid h2, .consultation-cta h2, .urgent-order-strip h2,
  .reviews-heading h2 { font-size: 30px; line-height: 1.06; }
  .company-intro-grid { gap: 22px; }
  .company-introduction .company-copy p { font-size: 14px; line-height: 1.55; }
  .company-introduction .trust-cards { gap: 8px; margin-top: 32px; }
  .company-introduction .trust-cards article { min-height: 165px; padding: 20px; }
  .company-introduction .trust-cards h3 { margin: 28px 0 9px; font-size: 17px; }
  .company-introduction .trust-cards p { font-size: 12px; line-height: 1.45; }

  .consultation-cta { gap: 28px; }
  .consultation-cta ul { padding: 14px 0; gap: 7px; }
  .consultation-sheet { padding: 20px; }
  .consultation-sheet > b { margin: 17px 0; font-size: 40px; }
  .consultation-sheet dl { margin-top: 12px; }
  .consultation-sheet dl div { padding: 9px 0; }
  .urgent-order-strip { margin: 0 12px 20px; padding: 24px 18px; gap: 22px; }

  .reviews-heading { margin-bottom: 25px; }
  .review-card { width: 72vw; min-height: 235px; padding: 20px; }
  .review-topline { margin-bottom: 15px; }
  .review-stars { margin-bottom: 14px; font-size: 14px; }
  .review-card blockquote { font-size: 12px; line-height: 1.55; }

  .engineering-grid { gap: 28px; }
  .drawing-board { max-height: 300px; }
  .drawing-board svg { min-width: 420px; }
  .technical-list { margin-top: 22px; }
  .technical-list li { padding: 14px 0; }
  .material-card { padding-bottom: 17px; }
  .finish-card > div { height: 125px; }
  .finish-card { padding-bottom: 17px; }
  .process-line li { padding-top: 27px; }
  .quote-panel { gap: 25px; }

  .request-heading { padding: 32px 0 26px; }
  .request-heading h1, .request-confirmation h2 { font-size: 34px; }
  .request-heading > p:last-child, .request-confirmation > p { font-size: 13px; }
  .request-summary { padding: 16px; }
  .request-summary h2 { margin-bottom: 20px; font-size: 20px; }
  .request-block { padding: 17px 14px; }
  .preference-notice, .pending-note { padding: 12px; }
  .schedule-picker { padding: 12px; }
  .confirmation-card { margin: 24px 0; }

  .pack-hero { padding-top: 34px; padding-bottom: 36px; gap: 18px; }
  .pack-hero h1 { font-size: 34px; }
  .pack-hero > div > p:not(.eyebrow) { margin: 18px 0; font-size: 13px; }
  .guide-visual { min-height: 245px; transform: scale(.72); margin-bottom: -45px; }
  .pack-section { padding-top: 48px; padding-bottom: 48px; }
  .packaging-page h2 { font-size: 30px; }
  .section-label { margin-bottom: 28px; }
  .welcome, .measure-layout, .quote-guide { gap: 28px; }
  .use-grid article, .process-guide li { min-height: 145px; padding: 17px; }
  .dimension-visual { min-height: 280px; }
  .gsm-block { margin-top: 32px; gap: 25px; }
  .finish-friendly i { height: 110px; }

  .product-detail { padding-top: 20px; }
  .detail-rule { margin-bottom: 22px; }
  .detail-layout { gap: 25px; }
  .product-showcase h1 { margin-top: 18px; font-size: 32px; }
  .enquiry-sheet h2 { font-size: 29px; }
  .form-intro { margin-bottom: 25px; }
  .enquiry-sheet form { gap: 22px; }
}