*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: #020617;
  color: #f5f5f7;
  scroll-behavior: smooth;
}

body {
  line-height: 1.5;
  font-size: 14px;
}

.container {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 16px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  background: linear-gradient(to bottom, rgba(5, 6, 10, 0.97), rgba(5, 6, 10, 0.9));
  border-bottom: 1px solid rgba(148, 163, 184, 0.22);
  box-shadow: 0 14px 45px rgba(0, 0, 0, 0.9);
}

.site-header-scrolled {
  background: linear-gradient(to bottom, rgba(5, 6, 10, 0.98), rgba(5, 6, 10, 0.95));
  border-bottom-color: rgba(148, 163, 184, 0.4);
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.96);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  overflow: hidden;
  box-shadow:
    0 0 18px rgba(250, 204, 21, 0.35),
    0 0 0 1px rgba(161, 98, 7, 0.9);
  background: radial-gradient(circle at 30% 0%, #ffd56a, #f3a712 40%, #b67300 100%);
}

.logo-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.logo-text {
  font-size: 14px;
  color: #f5f5f7;
}

.nav {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
}

.nav a {
  color: #d1d5db;
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 999px;
  position: relative;
  overflow: hidden;
  transition: background-color 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
}

.nav a:hover {
  background-color: rgba(148, 163, 184, 0.16);
  color: #f9fafb;
  box-shadow: 0 0 18px rgba(56, 189, 248, 0.2);
}

.hero {
  padding: 72px 0 54px;
  background:
    radial-gradient(circle at top left, rgba(250, 204, 21, 0.15), transparent 65%),
    radial-gradient(circle at 80% 0%, rgba(59, 130, 246, 0.25), transparent 70%),
    radial-gradient(circle at 10% 80%, rgba(139, 92, 246, 0.16), transparent 60%);
}

.hero-inner {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 28px;
}

.hero h1 {
  margin: 0 0 12px;
  font-size: clamp(28px, 4.2vw, 38px);
  line-height: 1.2;
}

.hero-subtitle {
  margin: 0;
  max-width: 640px;
  color: #9ca3af;
  font-size: 15px;
}

.hero-meta {
  margin: 4px 0 0;
  font-size: 11px;
  color: #9ca3af;
  text-transform: uppercase;
  letter-spacing: 0.18em;
}

.hero-text {
  flex: 1.1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 18px;
  position: relative;
  z-index: 1;
}

.hero-text::before {
  content: "";
  position: absolute;
  inset: -10px -40px 40%;
  background: radial-gradient(circle at 0 0, rgba(250, 204, 21, 0.12), transparent 65%);
  opacity: 0.9;
  z-index: -1;
  pointer-events: none;
}

.hero-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 6px;
}

.chip {
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  border: 1px solid rgba(148, 163, 184, 0.7);
  background-color: rgba(15, 23, 42, 0.9);
  color: #e5e7eb;
}

.chip-gold {
  border-color: rgba(250, 204, 21, 0.8);
  color: #facc15;
}

.chip-blue {
  border-color: rgba(56, 189, 248, 0.8);
  color: #7dd3fc;
}

.chip-neutral {
  border-color: rgba(148, 163, 184, 0.8);
  color: #e5e7eb;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 6px;
}

.hero-visual {
  flex: 0.9;
  position: relative;
  display: flex;
  justify-content: center;
}

.hero-team-image {
  width: 100%;
  max-width: 520px;
  border-radius: 22px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6);
}

.badge-title {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.badge-subtitle {
  display: block;
  font-size: 11px;
  color: #e5e7eb;
}

.section {
  padding: 32px 0;
}

.section-alt {
  background-color: #020617;
}

h2 {
  margin: 0 0 16px;
  font-size: 20px;
}

p {
  margin: 0 0 10px;
}

.muted {
  color: #9ca3af;
}

.small {
  font-size: 13px;
}

.section-header {
  max-width: 640px;
  margin-bottom: 20px;
}

.section-header h2 {
  margin-bottom: 8px;
}

.featured-section {
  background:
    radial-gradient(circle at top right, rgba(250, 204, 21, 0.12), #05060a);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 8px;
}

.card {
  background: radial-gradient(circle at top left, rgba(250, 204, 21, 0.08), #05060a);
  border-radius: 12px;
  padding: 16px 16px 14px;
  border: 1px solid rgba(148, 163, 184, 0.18);
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.6);
}

.card h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.featured-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
  margin-top: 16px;
}

.product-card {
  background: radial-gradient(circle at top left, rgba(250, 204, 21, 0.14), #05060a);
  border-radius: 16px;
  border: 1px solid rgba(250, 204, 21, 0.4);
  box-shadow:
    0 18px 45px rgba(0, 0, 0, 0.9),
    0 0 0 1px rgba(15, 23, 42, 0.9);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.product-card:hover {
  transform: translateY(-6px);
  border-color: rgba(250, 204, 21, 0.7);
  box-shadow:
    0 25px 50px rgba(0, 0, 0, 0.7),
    0 0 0 1px rgba(250, 204, 21, 0.6);
}

.product-logo-wrap {
  min-height: 260px;
  max-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 22px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.3);
  background:
    radial-gradient(circle at 0% 0%, rgba(250, 204, 21, 0.24), transparent 60%),
    radial-gradient(circle at 100% 0%, rgba(56, 189, 248, 0.26), transparent 60%),
    linear-gradient(145deg, rgba(15, 23, 42, 0.98), rgba(3, 7, 18, 0.98));
  border-radius: 16px 16px 0 0;
  box-shadow:
    0 0 40px rgba(250, 204, 21, 0.15),
    inset 0 0 0 1px rgba(15, 23, 42, 0.9);
}

.product-logo {
  display: block;
  width: 160px;
  height: 160px;
  object-fit: contain;
  border-radius: 12px;
}

.product-body {
  padding: 14px 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.product-name {
  margin: 0;
  font-size: 17px;
}

.product-description {
  margin: 0;
  font-size: 14px;
  color: #d1d5db;
}

.feature-list {
  margin: 4px 0 10px;
  padding-left: 18px;
  font-size: 13px;
  color: #e5e7eb;
}

.feature-list li {
  margin-bottom: 4px;
}

.product-actions {
  margin-top: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.product-actions .btn {
  flex: 1 1 0;
  justify-content: center;
}

.product-detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}

.product-detail-card {
  padding: 16px 16px 14px;
  border-radius: 16px;
  background:
    radial-gradient(circle at 0% 0%, rgba(250, 204, 21, 0.14), transparent 60%),
    linear-gradient(145deg, rgba(15, 23, 42, 1), rgba(15, 23, 42, 0.98));
  border: 1px solid rgba(148, 163, 184, 0.6);
  box-shadow:
    0 14px 38px rgba(0, 0, 0, 0.9),
    0 0 0 1px rgba(15, 23, 42, 1);
  min-height: 220px;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.product-detail-card:hover {
  transform: translateY(-4px);
  border-color: rgba(250, 204, 21, 0.55);
  box-shadow:
    0 20px 45px rgba(0, 0, 0, 0.9),
    0 0 0 1px rgba(250, 204, 21, 0.5);
}

.product-detail-card h3 {
  margin-top: 0;
}

.detail-list {
  margin: 8px 0 10px;
  padding-left: 18px;
  font-size: 13px;
}

.detail-list li {
  margin-bottom: 4px;
}

.detail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}

.btn-primary {
  background: linear-gradient(135deg, #facc15, #eab308, #b45309);
  color: #111827;
  box-shadow:
    0 10px 25px rgba(250, 204, 21, 0.35),
    0 0 0 1px rgba(148, 163, 184, 0.4);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #fde047, #facc15, #b45309);
  transform: translateY(-1px);
  box-shadow:
    0 14px 32px rgba(250, 204, 21, 0.5),
    0 0 0 1px rgba(250, 204, 21, 0.7);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow:
    0 6px 14px rgba(250, 204, 21, 0.4),
    0 0 0 1px rgba(148, 163, 184, 0.6);
}

.btn-secondary {
  background: radial-gradient(circle at 0% 0%, rgba(56, 189, 248, 0.25), rgba(15, 23, 42, 1));
  color: #e5e7eb;
  border: 1px solid rgba(56, 189, 248, 0.8);
  box-shadow:
    0 10px 25px rgba(37, 99, 235, 0.4),
    0 0 0 1px rgba(15, 23, 42, 1);
}

.btn-secondary:hover {
  background: radial-gradient(circle at 0% 0%, rgba(96, 165, 250, 0.4), rgba(15, 23, 42, 1));
  transform: translateY(-1px);
  box-shadow:
    0 14px 30px rgba(59, 130, 246, 0.6),
    0 0 0 1px rgba(30, 64, 175, 0.9);
}

.btn-secondary:active {
  transform: translateY(0);
  box-shadow:
    0 6px 16px rgba(37, 99, 235, 0.5),
    0 0 0 1px rgba(30, 64, 175, 0.9);
}

.btn-disabled{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:8px 14px;
  border-radius:999px;
  font-size:13px;
  font-weight:500;
  background:#2a2a2a;
  color:#9a9a9a;
  cursor:not-allowed;
  border:1px solid #444;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid rgba(148, 163, 184, 0.5);
  background-color: transparent;
  color: #e5e7eb;
  transition: transform 0.12s ease, box-shadow 0.12s ease, background-color 0.12s ease, border-color 0.12s ease;
}

.btn-ghost:hover {
  background-color: rgba(15, 23, 42, 0.9);
  border-color: rgba(250, 204, 21, 0.7);
  box-shadow: 0 10px 30px rgba(250, 204, 21, 0.35);
  transform: translateY(-1px);
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 2.1fr) minmax(0, 1.4fr);
  gap: 28px;
  align-items: start;
}

.about-highlight {
  border-radius: 16px;
  padding: 16px 18px;
  background:
    radial-gradient(circle at 0% 0%, rgba(250, 204, 21, 0.18), transparent 65%),
    linear-gradient(145deg, rgba(15, 23, 42, 1), rgba(15, 23, 42, 0.96));
  border: 1px solid rgba(250, 204, 21, 0.5);
  box-shadow:
    0 16px 40px rgba(0, 0, 0, 0.9),
    0 0 0 1px rgba(15, 23, 42, 1);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 18px;
}

.feature-card {
  padding: 16px 16px 14px;
  border-radius: 16px;
  background:
    radial-gradient(circle at 0% 0%, rgba(56, 189, 248, 0.12), transparent 60%),
    radial-gradient(circle at 100% 100%, rgba(168, 85, 247, 0.14), transparent 60%),
    linear-gradient(145deg, rgba(15, 23, 42, 1), rgba(15, 23, 42, 0.98));
  border: 1px solid rgba(148, 163, 184, 0.5);
  box-shadow:
    0 16px 45px rgba(0, 0, 0, 0.95),
    0 0 0 1px rgba(15, 23, 42, 1);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(250, 204, 21, 0.45);
  box-shadow:
    0 20px 40px rgba(0, 0, 0, 0.9),
    0 0 0 1px rgba(250, 204, 21, 0.4);
}

.feature-card h3 {
  margin-top: 6px;
}

.feature-icon {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  box-shadow: 0 0 28px rgba(148, 163, 184, 0.7);
}

.feature-icon-gold {
  background: radial-gradient(circle, #facc15, #b45309);
}

.feature-icon-blue {
  background: radial-gradient(circle, #38bdf8, #1d4ed8);
}

.feature-icon-violet {
  background: radial-gradient(circle, #a855f7, #6d28d9);
}

.feature-icon-neutral {
  background: radial-gradient(circle, #e5e7eb, #6b7280);
}

.performance-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}

.performance-card {
  padding: 16px 16px 14px;
  border-radius: 16px;
  background:
    radial-gradient(circle at 0% 0%, rgba(250, 204, 21, 0.12), transparent 55%),
    linear-gradient(145deg, rgba(15, 23, 42, 1), rgba(15, 23, 42, 0.98));
  border: 1px solid rgba(148, 163, 184, 0.5);
  box-shadow:
    0 14px 38px rgba(0, 0, 0, 0.9),
    0 0 0 1px rgba(15, 23, 42, 1);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.performance-card:hover {
  transform: translateY(-4px);
  border-color: rgba(250, 204, 21, 0.45);
  box-shadow:
    0 20px 40px rgba(0, 0, 0, 0.9),
    0 0 0 1px rgba(250, 204, 21, 0.4);
}

.performance-card h3 {
  margin-top: 0;
}

.performance-actions {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.quantix-analytics {
  margin-top: 20px;
}

.quantix-analytics h3 {
  margin: 0 0 6px;
}

.analytics-grid {
  margin-top: 10px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.analytics-card {
  border-radius: 14px;
  background:
    radial-gradient(circle at 0% 0%, rgba(250, 204, 21, 0.12), transparent 60%),
    linear-gradient(145deg, rgba(15, 23, 42, 1), rgba(15, 23, 42, 0.98));
  border: 1px solid rgba(148, 163, 184, 0.6);
  box-shadow:
    0 12px 30px rgba(0, 0, 0, 0.85),
    0 0 0 1px rgba(15, 23, 42, 1);
  padding: 10px 10px 9px;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.analytics-card:hover {
  transform: translateY(-3px);
  box-shadow:
    0 18px 40px rgba(0, 0, 0, 0.9),
    0 0 0 1px rgba(59, 130, 246, 0.6);
}

.analytics-label {
  display: block;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: #9ca3af;
  margin-bottom: 6px;
}

.analytics-image-wrap {
  border-radius: 10px;
  overflow: hidden;
  background-color: #020617;
  box-shadow:
    0 0 20px rgba(15, 23, 42, 0.9),
    0 0 0 1px rgba(30, 64, 175, 0.6);
  cursor: pointer;
}

.analytics-image {
  display: block;
  width: 100%;
  height: 180px;
  object-fit: contain;
  background-color: #020617;
  transition: transform 0.25s ease-out;
}

.analytics-image-wrap:hover .analytics-image {
  transform: scale(1.05);
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.why-card {
  padding: 16px 16px 14px;
  border-radius: 16px;
  background:
    radial-gradient(circle at 100% 0%, rgba(56, 189, 248, 0.18), transparent 60%),
    linear-gradient(145deg, rgba(15, 23, 42, 1), rgba(15, 23, 42, 0.98));
  border: 1px solid rgba(148, 163, 184, 0.55);
  box-shadow:
    0 14px 34px rgba(0, 0, 0, 0.9),
    0 0 0 1px rgba(15, 23, 42, 1);
}

.why-card h3 {
  margin-top: 0;
}

.section-contact {
  background:
    radial-gradient(circle at 0% 0%, rgba(250, 204, 21, 0.16), transparent 55%),
    radial-gradient(circle at 100% 0%, rgba(59, 130, 246, 0.22), transparent 60%),
    #020617;
}

.contact-inner {
  max-width: 720px;
}

.contact-text {
  border-radius: 20px;
  padding: 20px 20px 18px;
  background:
    radial-gradient(circle at 0% 0%, rgba(250, 204, 21, 0.22), transparent 65%),
    radial-gradient(circle at 100% 100%, rgba(59, 130, 246, 0.22), transparent 60%),
    linear-gradient(145deg, rgba(15, 23, 42, 1), rgba(15, 23, 42, 0.98));
  border: 1px solid rgba(250, 204, 21, 0.7);
  box-shadow:
    0 18px 50px rgba(0, 0, 0, 0.95),
    0 0 0 1px rgba(15, 23, 42, 1);
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 10px 0 10px;
}

.contact-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 4px 0;
  border-bottom: 1px dashed rgba(148, 163, 184, 0.4);
  font-size: 14px;
}

.contact-label {
  color: #9ca3af;
}

.contact-value {
  font-weight: 500;
}

.contact-value a{
  color:#ffffff;
  font-weight:600;
  text-decoration:none;
}

.contact-value a:hover{
  text-decoration:underline;
}

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(3, 7, 18, 0.88);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease-out;
  z-index: 999;
}

.lightbox.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.lightbox img {
  max-width: 90vw;
  max-height: 90vh;
  border-radius: 18px;
  box-shadow:
    0 30px 80px rgba(0, 0, 0, 0.9),
    0 0 0 1px rgba(15, 23, 42, 1);
  transform: scale(0.95);
  transition: transform 0.2s ease-out;
}

.lightbox.is-visible img {
  transform: scale(1);
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal-visible {
  opacity: 1;
  transform: translateY(0);
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}

.site-footer {
  border-top: 1px solid rgba(148, 163, 184, 0.2);
  padding: 14px 0 18px;
  background-color: #020617;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  border-top: 1px solid rgba(148, 163, 184, 0.35);
  box-shadow: 0 -6px 22px rgba(15, 23, 42, 0.95);
}

.footer-brand {
  display: block;
  font-weight: 600;
  margin-bottom: 2px;
}

.footer-nav {
  display: flex;
  gap: 10px;
  font-size: 13px;
}

.footer-nav a {
  color: #9ca3af;
  text-decoration: none;
}

.footer-nav a:hover {
  color: #f9fafb;
  text-decoration: underline;
}

@keyframes heroAmbient {
  0% {
    transform: translate3d(-10px, 0, 0) scale(1);
  }
  50% {
    transform: translate3d(10px, 8px, 0) scale(1.02);
  }
  100% {
    transform: translate3d(-8px, -6px, 0) scale(1.01);
  }
}

@keyframes heroFloat {
  0% {
    transform: translateY(0);
  }
  100% {
    transform: translateY(-6px);
  }
}

.footer-left {
  display: flex;
  flex-direction: column;
}

/* ===== Mobile Menu ===== */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: 1px solid rgba(148, 163, 184, 0.4);
  border-radius: 8px;
  padding: 8px;
  cursor: pointer;
  z-index: 200;
}

.menu-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: #f5f5f7;
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.menu-toggle.is-active .menu-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.menu-toggle.is-active .menu-toggle-bar:nth-child(2) {
  opacity: 0;
}
.menu-toggle.is-active .menu-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Must stay BELOW .site-header (100) or overlay steals taps from the slide-out .nav */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 99;
  pointer-events: auto;
}

.nav-overlay.is-visible {
  display: block;
}

.nav a.nav-active {
  background-color: rgba(250, 204, 21, 0.15);
  color: #facc15;
}

.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #facc15, #b45309);
  color: #111827;
  font-size: 20px;
  font-weight: 700;
  border: none;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
  z-index: 90;
  box-shadow: 0 4px 20px rgba(250, 204, 21, 0.4);
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(250, 204, 21, 0.6);
}

.btn:focus-visible,
.nav a:focus-visible,
.footer-nav a:focus-visible,
.menu-toggle:focus-visible {
  outline: 2px solid #facc15;
  outline-offset: 2px;
}

section[id] {
  scroll-margin-top: 80px;
}

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  /* Drawer lives inside header; keep header above overlay (99) so links receive clicks */
  .site-header {
    z-index: 110;
  }

  .nav {
    position: fixed;
    top: 0;
    right: 0;
    width: 280px;
    height: 100vh;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 80px 24px 24px;
    background: rgba(5, 6, 10, 0.98);
    backdrop-filter: blur(20px);
    border-left: 1px solid rgba(148, 163, 184, 0.2);
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.8);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    z-index: 150;
    pointer-events: auto;
  }

  .nav.is-open {
    transform: translateX(0);
  }

  .nav a {
    width: 100%;
    padding: 12px 16px;
    font-size: 16px;
    border-radius: 12px;
    position: relative;
    z-index: 1;
    -webkit-tap-highlight-color: rgba(250, 204, 21, 0.2);
    touch-action: manipulation;
  }

  .nav a:hover {
    background-color: rgba(148, 163, 184, 0.12);
  }

  .btn-ghost {
    display: none;
  }

  .header-inner {
    gap: 10px;
    align-items: center;
  }

  .hero-inner {
    flex-direction: column;
  }

  .hero-visual {
    min-height: 220px;
  }

  .hero h1 {
    font-size: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .product-card:hover,
  .product-detail-card:hover,
  .feature-card:hover,
  .performance-card:hover,
  .analytics-card:hover {
    transform: none;
  }
}