/* ─────────────────────────────────────────────────
   Power Control System — Shared Styles
   Used across: about, gallery, contact, product pages
   ───────────────────────────────────────────────── */

:root {
  --primary: #0a2647;
  --accent: #e8b400;
  --accent2: #1a6fb5;
  --light: #f4f7fb;
  --white: #ffffff;
  --dark: #0d1b2e;
  --text: #3a4a5c;
  --border: #dde4ed;
  --gradient: linear-gradient(135deg, #0a2647 0%, #144272 60%, #1a6fb5 100%);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
img { max-width: 100%; }
html { scroll-behavior: smooth; }
body { font-family: 'Roboto', sans-serif; color: var(--text); background: var(--white); overflow-x: hidden; padding-bottom: 58px; }

/* ── TOPBAR ── */
.topbar {
  background: linear-gradient(90deg, #071828 0%, #0a2647 60%, #0d3060 100%);
  color: #a8bbd4; font-size: 12.5px;
  border-bottom: 1px solid rgba(232,180,0,0.18);
}
.topbar-inner {
  max-width: 1280px; margin: 0 auto; padding: 0 16px;
  display: flex; justify-content: space-between; align-items: stretch; flex-wrap: wrap;
  min-height: 38px; overflow: hidden;
}
.topbar-left, .topbar-right { display: flex; align-items: center; gap: 0; }
.topbar-item {
  display: flex; align-items: center; gap: 7px;
  padding: 0 18px; height: 38px;
  border-right: 1px solid rgba(255,255,255,0.07);
  color: #b8cde0; font-size: 12.5px; text-decoration: none;
  transition: all .2s; white-space: nowrap;
}
.topbar-item:first-child { padding-left: 0; }
.topbar-right .topbar-item:last-child { border-right: none; padding-right: 0; }
.topbar-item:hover { color: var(--accent); background: rgba(255,255,255,0.04); }
.topbar-item i { color: var(--accent); font-size: 12px; }
.topbar-item strong { color: #fff; font-weight: 600; }
.topbar-socials { display: flex; align-items: center; gap: 0; margin-left: 8px; }
.topbar-soc {
  display: flex; align-items: center; justify-content: center;
  width: 32px; height: 38px;
  color: #6a8aaa; font-size: 13px; text-decoration: none; transition: color .2s;
}
.topbar-soc:hover { color: var(--accent); }

/* ── NAVBAR ── */
.header-wrap {
  position: sticky; top: 0; z-index: 1000;
  box-shadow: 0 4px 32px rgba(10,38,71,0.13);
  background: var(--white);
}
nav {
  background: var(--white);
  border-bottom: 3px solid var(--accent);
}
.nav-inner {
  max-width: 1280px; margin: 0 auto; padding: 0 28px;
  display: flex; justify-content: space-between; align-items: center;
  height: 96px;
}
.nav-logo {
  display: flex; align-items: center; gap: 0; text-decoration: none;
  position: relative;
}
.nav-logo img { height: 86px; object-fit: contain; transition: transform .3s; }
.nav-logo:hover img { transform: scale(1.04); }

.nav-links { display: flex; align-items: center; gap: 2px; list-style: none; }
.nav-links > li { position: relative; }
.nav-links > li > a {
  display: flex; align-items: center; gap: 4px;
  padding: 10px 15px; font-size: 13px; font-weight: 700;
  color: #1a2d45; text-decoration: none;
  letter-spacing: .4px; text-transform: uppercase;
  transition: all .22s; position: relative;
}
.nav-links > li > a::after {
  content: ''; position: absolute; bottom: 6px; left: 50%; right: 50%;
  height: 2px; background: var(--accent); border-radius: 2px;
  transition: all .25s cubic-bezier(.4,0,.2,1);
}
.nav-links > li > a:hover::after,
.nav-links > li > a.active::after { left: 14px; right: 14px; }
.nav-links > li > a:hover, .nav-links > li > a.active { color: var(--accent2); }
.nav-links > li > a i { font-size: 9px; opacity: .6; transition: transform .2s; }
.nav-links > li:hover > a i { transform: rotate(180deg); }

.dropdown {
  position: absolute; top: 100%; left: 0; min-width: 260px;
  background: var(--white);
  border-radius: 12px;
  box-shadow: 0 16px 50px rgba(10,38,71,.18);
  padding: 18px 0 10px;
  opacity: 0; pointer-events: none;
  transform: translateY(6px) scale(0.97);
  transition: all .25s cubic-bezier(.4,0,.2,1);
  z-index: 200;
  border-top: 3px solid var(--accent);
}
.nav-links > li:hover .dropdown { opacity: 1; pointer-events: all; transform: translateY(0) scale(1); }
.dropdown a {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 20px; font-size: 13px; color: var(--text);
  text-decoration: none; transition: all .15s;
  border-left: 3px solid transparent;
}
.dropdown a::before { content: '›'; color: var(--accent); font-size: 16px; font-weight: 900; line-height: 1; }
.dropdown a:hover { background: var(--light); color: var(--accent2); border-left-color: var(--accent); padding-left: 24px; }

.nav-cta {
  background: linear-gradient(135deg, #e8b400, #f5c800) !important;
  color: var(--primary) !important;
  border-radius: 8px !important;
  padding: 10px 22px !important;
  font-weight: 900 !important;
  font-size: 13px !important;
  box-shadow: 0 4px 16px rgba(232,180,0,0.35);
  letter-spacing: .5px;
  margin-left: 6px;
}
.nav-cta::after { display: none !important; }
.nav-cta:hover {
  background: linear-gradient(135deg, #0a2647, #144272) !important;
  color: var(--white) !important;
  box-shadow: 0 6px 20px rgba(10,38,71,0.35) !important;
  transform: translateY(-2px);
}

.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; border-radius: 8px; transition: background .2s; }
.hamburger:hover { background: var(--light); }
.hamburger span { width: 24px; height: 2.5px; background: var(--primary); border-radius: 2px; transition: all .3s; display: block; }
.hamburger.open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

.mobile-menu {
  display: none; background: var(--white);
  border-top: 1px solid var(--border);
  box-shadow: 0 12px 32px rgba(10,38,71,0.10);
  max-height: calc(100vh - 70px); overflow-y: auto;
}
.mobile-menu a {
  display: flex; align-items: center; gap: 10px;
  padding: 13px 24px; font-size: 14px; font-weight: 600;
  color: var(--primary); text-decoration: none;
  border-bottom: 1px solid var(--light); transition: all .15s;
}
.mobile-menu a::before { content: '›'; color: var(--accent); font-size: 18px; font-weight: 900; }
.mobile-menu a:hover { background: var(--light); color: var(--accent2); padding-left: 30px; }
.mobile-menu .mob-sub {
  font-size: 12.5px; padding-left: 40px; background: #fafbfd; color: var(--text);
}
.mobile-menu .mob-sub::before { content: '·'; font-size: 22px; }
.mobile-menu .mob-cta {
  margin: 12px 16px; padding: 13px 24px !important;
  background: linear-gradient(135deg, #e8b400, #f5c800);
  border-radius: 10px; text-align: center; justify-content: center;
  color: var(--primary) !important; font-weight: 900 !important;
  box-shadow: 0 4px 14px rgba(232,180,0,0.3);
  border-bottom: none !important;
}
.mobile-menu .mob-cta:hover { background: var(--primary); color: var(--white) !important; }

/* ── STICKY BOTTOM BAR ── */
.sticky-bar {
  position: fixed; bottom: 0; left: 0; right: 0;
  z-index: 9999; display: flex; height: 58px;
  box-shadow: 0 -4px 24px rgba(0,0,0,0.18);
}
.sticky-bar-btn {
  flex: 1; display: flex; align-items: center; justify-content: center; gap: 12px;
  text-decoration: none; font-size: 15px; font-weight: 800;
  letter-spacing: .3px; transition: filter .2s, transform .15s;
  position: relative; overflow: hidden;
}
.sticky-bar-btn::after {
  content: ''; position: absolute; inset: 0;
  background: rgba(255,255,255,0); transition: background .2s;
}
.sticky-bar-btn:hover::after { background: rgba(255,255,255,0.08); }
.sticky-bar-btn:active { transform: scale(0.98); }
.sticky-bar-call {
  background: linear-gradient(135deg, #1a6fb5, #0f4d8a);
  color: #fff; border-right: 1px solid rgba(255,255,255,0.15);
}
.sticky-bar-call .sbb-icon, .sticky-bar-wa .sbb-icon {
  width: 38px; height: 38px; border-radius: 50%;
  background: rgba(255,255,255,0.15);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; border: 1.5px solid rgba(255,255,255,0.3);
}
.sticky-bar-call .sbb-icon { font-size: 16px; }
.sticky-bar-wa .sbb-icon { font-size: 20px; }
.sticky-bar-call .sbb-text, .sticky-bar-wa .sbb-text { line-height: 1.25; }
.sbb-label { font-size: 10px; font-weight: 600; opacity: .75; text-transform: uppercase; letter-spacing: 1px; display: block; }
.sbb-num { font-size: 14.5px; font-weight: 900; display: block; }
.sticky-bar-wa { background: linear-gradient(135deg, #25D366, #1aaa52); color: #fff; }
.sticky-bar-divider { width: 1px; background: rgba(255,255,255,0.2); flex-shrink: 0; }
@keyframes callPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255,255,255,0.4); }
  50% { box-shadow: 0 0 0 7px rgba(255,255,255,0); }
}
.sticky-bar-call .sbb-icon { animation: callPulse 2s ease-in-out infinite; }

/* ── PAGE HERO BANNER ── */
.page-hero {
  position: relative;
  background: var(--gradient);
  color: var(--white);
  padding: 84px 0 72px;
  overflow: hidden;
}
.page-hero::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(232,180,0,0.18) 0%, transparent 55%),
              radial-gradient(circle at 10% 90%, rgba(26,111,181,0.25) 0%, transparent 50%);
  pointer-events: none;
}
.page-hero::after {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 48px 48px; opacity: .35;
  pointer-events: none;
}
.page-hero-inner {
  max-width: 1280px; margin: 0 auto; padding: 0 24px;
  position: relative; z-index: 1;
  text-align: center;
}
.page-hero h1 {
  font-family: 'Roboto Condensed', sans-serif;
  font-size: clamp(30px, 5vw, 52px);
  font-weight: 900; line-height: 1.1;
  margin-bottom: 14px; letter-spacing: .3px;
}
.page-hero h1 span { color: var(--accent); }
.page-hero p {
  font-size: 16px; line-height: 1.7;
  max-width: 720px; margin: 0 auto 22px;
  color: rgba(255,255,255,0.85);
}
.breadcrumb {
  display: inline-flex; align-items: center; gap: 10px;
  background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.15);
  border-radius: 100px; padding: 7px 18px;
  font-size: 12.5px; font-weight: 600; color: rgba(255,255,255,0.85);
  letter-spacing: .3px; backdrop-filter: blur(6px);
}
.breadcrumb a { color: var(--accent); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb i { font-size: 9px; opacity: .6; }

/* ── SECTIONS ── */
section { padding: 80px 0; }
.section-inner { max-width: 1280px; margin: 0 auto; padding: 0 24px; }
.section-label { font-size: 11px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; color: var(--accent2); margin-bottom: 10px; }
.section-title { font-size: clamp(26px, 3.5vw, 40px); font-weight: 900; color: var(--primary); font-family: 'Roboto Condensed', sans-serif; line-height: 1.15; margin-bottom: 16px; }
.section-title span { color: var(--accent2); }
.section-desc { font-size: 16px; color: var(--text); line-height: 1.75; max-width: 640px; }
.section-header { margin-bottom: 48px; }
.section-header.center { text-align: center; }
.section-header.center .section-desc { margin: 0 auto; }

/* ── BUTTONS ── */
.btn-primary {
  background: var(--accent); color: var(--primary);
  padding: 14px 32px; border-radius: 8px; font-weight: 900; font-size: 14px;
  text-decoration: none; letter-spacing: .4px; transition: all .2s;
  display: inline-flex; align-items: center; gap: 8px; border: none; cursor: pointer;
}
.btn-primary:hover {
  background: var(--primary); color: var(--accent);
  transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,.18);
}
.btn-outline {
  border: 2px solid var(--primary); color: var(--primary);
  padding: 12px 28px; border-radius: 8px; font-weight: 800; font-size: 14px;
  text-decoration: none; transition: all .2s;
  display: inline-flex; align-items: center; gap: 8px; background: transparent; cursor: pointer;
}
.btn-outline:hover { background: var(--primary); color: var(--white); }

/* ── FORM (shared) ── */
.contact-form {
  background: var(--white); border-radius: 20px; padding: 40px;
  border: 1px solid var(--border);
  box-shadow: 0 4px 24px rgba(10,38,71,0.06);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block; font-size: 12.5px; font-weight: 700;
  color: var(--primary); margin-bottom: 6px;
  text-transform: uppercase; letter-spacing: .5px;
}
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 12px 16px; border: 1.5px solid var(--border);
  border-radius: 10px; font-family: 'Roboto', sans-serif; font-size: 14px;
  color: var(--text); transition: border .2s; background: var(--white);
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none; border-color: var(--accent2);
}
.form-group textarea { resize: vertical; min-height: 110px; }
.btn-submit {
  width: 100%; background: var(--primary); color: var(--white); border: none;
  padding: 15px; border-radius: 10px; font-family: 'Roboto', sans-serif;
  font-size: 15px; font-weight: 900; cursor: pointer; transition: all .2s;
  display: flex; align-items: center; justify-content: center; gap: 10px;
}
.btn-submit:hover { background: var(--accent2); transform: translateY(-2px); }

/* ── FOOTER ── */
footer { background: var(--dark); color: rgba(255,255,255,.6); }
.footer-main { max-width: 1280px; margin: 0 auto; padding: 64px 24px 40px; display: grid; grid-template-columns: 2fr 1fr 1.2fr 1fr; gap: 48px; }
.footer-brand .nav-logo { margin-bottom: 16px; display: inline-block; }
.footer-brand .nav-logo img {
  height: 80px;
  filter: brightness(0) invert(1);
  opacity: 0.95;
}
.footer-brand p { font-size: 13.5px; line-height: 1.75; margin-bottom: 20px; }
.footer-socials { display: flex; gap: 10px; }
.footer-social {
  width: 38px; height: 38px; border-radius: 10px;
  background: rgba(255,255,255,.08);
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,.6); text-decoration: none; transition: all .2s;
}
.footer-social:hover { background: var(--accent2); color: var(--white); }
.footer-col h4 { font-size: 12px; font-weight: 700; color: var(--white); text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 18px; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a {
  color: rgba(255,255,255,.55); font-size: 13.5px; text-decoration: none;
  transition: color .2s; display: flex; align-items: center; gap: 6px;
}
.footer-col ul li a::before { content: '→'; font-size: 11px; opacity: 0; transition: all .2s; margin-left: -14px; }
.footer-col ul li a:hover { color: var(--accent); padding-left: 2px; }
.footer-col ul li a:hover::before { opacity: 1; margin-left: 0; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.07); }
.footer-bottom-inner {
  max-width: 1280px; margin: 0 auto; padding: 18px 24px;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 10px; font-size: 13px;
}
.footer-cert { display: flex; gap: 10px; flex-wrap: wrap; }
.footer-cert span {
  background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.12);
  color: rgba(255,255,255,.5); font-size: 11px; font-weight: 600;
  padding: 3px 10px; border-radius: 6px;
}

/* ── SCROLL TO TOP ── */
.scroll-top {
  position: fixed; bottom: 78px; right: 22px; width: 46px; height: 46px;
  background: var(--accent); color: var(--primary); border: none; border-radius: 12px;
  font-size: 18px; cursor: pointer; box-shadow: 0 4px 16px rgba(232,180,0,.4);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transform: translateY(20px); transition: all .3s; z-index: 999;
}
.scroll-top.show { opacity: 1; transform: translateY(0); }
.scroll-top:hover { background: var(--primary); color: var(--accent); }

/* ── ANIMATIONS ── */
.fade-up { opacity: 0; transform: translateY(30px); transition: opacity .6s ease, transform .6s ease; }
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ── PRODUCT PAGE COMMON ── */
.product-intro { background: var(--white); padding: 70px 0; }
.product-intro-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 50px; align-items: center; }
.product-intro-img {
  width: 100%; height: 460px; border-radius: 20px; object-fit: cover;
  box-shadow: 0 16px 50px rgba(10,38,71,0.18);
}
.product-intro-text .product-pill {
  display: inline-block; background: rgba(232,180,0,0.16); color: #8b6b00;
  font-size: 11px; font-weight: 800; letter-spacing: 1.2px;
  padding: 5px 14px; border-radius: 100px; text-transform: uppercase;
  margin-bottom: 14px;
}
.product-intro-text h1 {
  font-family: 'Roboto Condensed', sans-serif;
  font-size: clamp(28px, 4vw, 42px); font-weight: 900; line-height: 1.15;
  color: var(--primary); margin-bottom: 16px;
}
.product-intro-text h1 span { color: var(--accent2); }
.product-intro-text p { font-size: 15px; line-height: 1.8; color: var(--text); margin-bottom: 14px; }
.product-meta { display: flex; gap: 28px; margin: 24px 0; flex-wrap: wrap; }
.pm-item { display: flex; align-items: center; gap: 10px; }
.pm-item i { color: var(--accent2); font-size: 18px; }
.pm-item strong { display: block; color: var(--primary); font-size: 13px; font-weight: 800; }
.pm-item small { color: var(--text); font-size: 12px; }
.product-cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 20px; }

/* Features */
.features { background: var(--light); }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feature-card {
  background: var(--white); border-radius: 16px; padding: 28px 24px;
  border: 1px solid var(--border); transition: all .3s;
}
.feature-card:hover {
  transform: translateY(-5px); box-shadow: 0 16px 36px rgba(10,38,71,0.10);
  border-color: rgba(26,111,181,0.3);
}
.feature-ico {
  width: 54px; height: 54px; border-radius: 13px;
  background: linear-gradient(135deg, var(--primary), var(--accent2));
  color: var(--accent); font-size: 22px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}
.feature-card h4 {
  font-family: 'Roboto Condensed', sans-serif;
  font-size: 18px; font-weight: 900; color: var(--primary); margin-bottom: 10px;
}
.feature-card p { font-size: 13.5px; line-height: 1.7; color: var(--text); }

/* Specs */
.specs { background: var(--white); }
.specs-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: start; }
.specs-table {
  background: var(--light); border-radius: 18px; padding: 28px;
  border: 1px solid var(--border);
}
.specs-table h3 {
  font-family: 'Roboto Condensed', sans-serif;
  font-size: 20px; font-weight: 900; color: var(--primary);
  margin-bottom: 18px; padding-bottom: 14px; border-bottom: 2px solid var(--accent);
}
.specs-table ul { list-style: none; padding: 0; }
.specs-table ul li {
  display: flex; justify-content: space-between; gap: 16px;
  padding: 11px 0; border-bottom: 1px dashed rgba(0,0,0,0.08);
  font-size: 14px;
}
.specs-table ul li:last-child { border-bottom: none; }
.specs-table ul li strong { color: var(--primary); font-weight: 700; }
.specs-table ul li span { color: var(--text); text-align: right; }

/* Applications */
.applications { background: var(--light); }
.app-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.app-card {
  background: var(--white); border-radius: 14px; padding: 22px 18px;
  text-align: center; border: 1px solid var(--border); transition: all .3s;
}
.app-card:hover {
  background: linear-gradient(135deg, var(--primary), var(--accent2));
  color: var(--white); transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(10,38,71,0.18);
}
.app-card:hover .app-ico, .app-card:hover h5, .app-card:hover p { color: var(--accent); }
.app-card:hover p { color: rgba(255,255,255,0.85); }
.app-ico { font-size: 30px; color: var(--accent2); margin-bottom: 12px; transition: color .3s; }
.app-card h5 {
  font-size: 14px; font-weight: 800; color: var(--primary);
  margin-bottom: 6px; transition: color .3s;
}
.app-card p { font-size: 12.5px; color: var(--text); line-height: 1.5; transition: color .3s; }

/* Related products */
.related { background: var(--white); }
.related-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.related-card {
  background: var(--white); border-radius: 14px; overflow: hidden;
  border: 1px solid var(--border); transition: all .3s; text-decoration: none;
  display: block;
}
.related-card:hover {
  transform: translateY(-6px); box-shadow: 0 14px 36px rgba(10,38,71,0.14);
  border-color: var(--accent2);
}
.related-img { height: 140px; overflow: hidden; }
.related-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.related-card:hover .related-img img { transform: scale(1.06); }
.related-body { padding: 16px 18px; }
.related-body h5 {
  font-size: 14.5px; font-weight: 800; color: var(--primary);
  font-family: 'Roboto Condensed', sans-serif; line-height: 1.3;
  margin-bottom: 4px;
}
.related-body span { font-size: 12px; color: var(--accent2); font-weight: 700; }

/* CTA */
.cta-band { background: var(--gradient); color: var(--white); padding: 56px 0; }
.cta-inner {
  max-width: 1280px; margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap;
}
.cta-inner h2 {
  font-family: 'Roboto Condensed', sans-serif; font-size: clamp(22px, 3vw, 32px);
  color: var(--white); margin: 0; flex: 1; min-width: 240px;
}
.cta-inner .btn-primary { background: var(--accent); color: var(--primary); }
.cta-inner .btn-primary:hover { background: var(--white); color: var(--primary); }

@media (max-width: 1024px) {
  .product-intro-grid { grid-template-columns: 1fr; gap: 32px; }
  .product-intro-img { height: 320px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .specs-grid { grid-template-columns: 1fr; }
  .app-grid { grid-template-columns: repeat(2, 1fr); }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  body { padding-bottom: 54px; }
  section { padding: 52px 0; }
  .section-inner { padding: 0 16px; }
  .product-intro { padding: 48px 0; }
  .product-intro-img { height: 240px; }
  .features-grid { grid-template-columns: 1fr; }
  .app-grid { grid-template-columns: 1fr 1fr; }
  .related-grid { grid-template-columns: 1fr 1fr; }
  .product-meta { gap: 18px; }
  .cta-inner { flex-direction: column; text-align: center; }
  .topbar { display: none; }
  .nav-inner { height: 70px; padding: 0 16px; }
  .nav-logo img { height: 60px; }
  .nav-links, .dropdown { display: none !important; }
  .hamburger { display: flex; }
  .sticky-bar { height: 54px; }
  .sticky-bar-btn { font-size: 13.5px; gap: 10px; }
  .sbb-num { font-size: 13px !important; }
  .form-row { grid-template-columns: 1fr; }
  .contact-form { padding: 24px 18px; }
  .footer-main { grid-template-columns: 1fr; gap: 28px; padding: 40px 16px 28px; }
  .footer-bottom-inner { flex-direction: column; text-align: center; gap: 12px; font-size: 12px; }
  .footer-cert { justify-content: center; }
  .page-hero { padding: 56px 0 48px; }
  .page-hero p { font-size: 14.5px; }
  .scroll-top { bottom: 74px; right: 14px; width: 42px; height: 42px; font-size: 15px; }
}
@media (max-width: 480px) {
  .nav-inner { height: 64px; padding: 0 12px; }
  .nav-logo img { height: 52px; }
  section { padding: 44px 0; }
  .section-inner { padding: 0 12px; }
  .section-header { margin-bottom: 32px; }
  .contact-form { padding: 20px 14px; }
  .form-group input, .form-group textarea, .form-group select { padding: 10px 12px; font-size: 13px; }
  .btn-primary, .btn-outline { padding: 12px 22px; font-size: 13px; }
}