:root {
  --navy: #071b31;
  --navy-dark: #041222;
  --navy-deep: #030d18;
  --blue: #0878d1;
  --blue-hover: #0769b8;
  --blue-bright: #38bdf8;
  --blue-gradient: linear-gradient(180deg, #0284c7 0%, #0369a1 100%);
  --ink: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --soft: #f8fafc;
  --surface: #ffffff;
  --container: 1280px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  margin: 0;
  color: var(--ink);
  background: #ffffff;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
  overflow-x: hidden;
}

.container {
  width: min(var(--container), calc(100% - 48px));
  margin: 0 auto;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.15s ease;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

button, input, select, textarea {
  font: inherit;
}

/* ==========================================================================
   TOPBAR (Universal WST Institutional Bar)
   ========================================================================== */
.site-topbar {
  background: var(--navy-dark);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 11.5px;
  color: #94a3b8;
  padding: 8px 0;
  line-height: 1.2;
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 24px;
}

.topbar-status {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #e2e8f0;
  font-weight: 650;
  letter-spacing: 0.02em;
}

.status-pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--blue-bright);
  box-shadow: 0 0 8px var(--blue-bright);
  flex-shrink: 0;
}

.topbar-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.topbar-sep {
  color: rgba(255, 255, 255, 0.2);
}

.topbar-phone {
  display: flex;
  align-items: center;
  gap: 5px;
  color: #cbdbe9;
}

.topbar-phone strong {
  color: var(--blue-bright);
  font-weight: 750;
}

.topbar-phone:hover strong {
  color: #7dd3fc;
}

/* ==========================================================================
   SITE HEADER (Universal Enterprise Dark Navy)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--navy);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(12px);
}

.header-inner {
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.brand img {
  background: #ffffff;
  padding: 5px 12px;
  border-radius: 8px;
  width: 130px;
  height: auto;
  display: block;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-left: auto;
}

.site-nav a {
  font-size: 13.5px;
  font-weight: 650;
  color: #e2e8f0;
}

.site-nav a:hover {
  color: var(--blue-bright);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lang-switch {
  display: flex;
  align-items: center;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  padding: 3px;
  background: rgba(255, 255, 255, 0.08);
}

.lang-btn {
  border: 0;
  background: transparent;
  color: #94a3b8;
  font-size: 11px;
  font-weight: 750;
  padding: 5px 7px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.lang-btn.is-active {
  background: var(--blue);
  color: #ffffff;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 16px;
  border-radius: 8px;
  background: var(--blue-gradient);
  color: #ffffff !important;
  font-size: 12.5px;
  font-weight: 750;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.25);
  white-space: nowrap;
}

.header-cta:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  padding: 9px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  height: 2px;
  margin: 4px 0;
  background: #ffffff;
  border-radius: 2px;
}

.nav-mobile-langs {
  display: none;
}

/* ==========================================================================
   HERO SECTION (Enterprise B2B Integrator Dark Navy)
   ========================================================================== */
.hero {
  position: relative;
  overflow: hidden;
  padding: 52px 0 0;
  background: radial-gradient(circle at 85% 20%, rgba(14, 116, 214, 0.22) 0%, rgba(7, 27, 49, 0) 55%),
              linear-gradient(180deg, #071b31 0%, #0a2342 60%, #0d2c52 100%);
  color: #ffffff;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(500px, 0.92fr);
  gap: 48px;
  align-items: center;
}

.hero-copy {
  padding: 8px 0 20px;
}

.hero-kicker-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
}

.hero-kicker-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 20px;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.28);
  color: #38bdf8;
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.02em;
}

.kicker-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #38bdf8;
  box-shadow: 0 0 8px #38bdf8;
}

.hero-kicker-tag {
  display: inline-flex;
  align-items: center;
  padding: 5px 10px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #cbdbe9;
  font-size: 11px;
  font-weight: 700;
}

.hero h1 {
  margin: 0;
  color: #ffffff;
  font-size: clamp(34px, 3.6vw, 48px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

.hero .lead {
  margin: 18px 0 0;
  color: #cbdbe9;
  font-size: 15.5px;
  line-height: 1.62;
  max-width: 620px;
  text-wrap: pretty;
}

.hero-audience-chips {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin-top: 20px;
}

.audience-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 12.5px;
  color: #e2e8f0;
}

.chip-badge {
  display: inline-flex;
  padding: 2px 7px;
  border-radius: 4px;
  background: rgba(56, 189, 248, 0.18);
  color: #38bdf8;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border-radius: 9px;
  font-size: 13.5px;
  font-weight: 750;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  border: 1px solid transparent;
}

.btn.primary {
  background: var(--blue-gradient);
  color: #ffffff;
  box-shadow: 0 6px 20px rgba(2, 132, 199, 0.28);
}

.btn.primary:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
}

.btn.secondary {
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
  backdrop-filter: blur(4px);
}

.btn.secondary:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.35);
  transform: translateY(-1px);
}

/* ==========================================================================
   HERO HARDWARE & SYSTEM ARCHITECTURE FRAME (Eliminating single cutouts)
   ========================================================================== */
.hero-visual {
  position: relative;
}

.hero-system-frame,
.hero-hardware-frame {
  background: #051426;
  border: 1px solid rgba(56, 189, 248, 0.2);
  border-radius: 16px;
  padding: 16px;
  box-shadow: 0 20px 48px rgba(3, 13, 24, 0.45);
}

.hardware-frame-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 11px;
}

.hardware-frame-title {
  display: flex;
  align-items: center;
  gap: 7px;
  color: #cbdbe9;
  font-weight: 750;
  letter-spacing: 0.03em;
}

.platform-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 6px #22c55e;
}

.hardware-frame-meta {
  color: #8da4bc;
  font-size: 10px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.hardware-screen {
  position: relative;
  overflow: hidden;
  border-radius: 10px;
  margin: 12px 0;
  height: 250px;
  background: #081a2e;
}

.hardware-screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hardware-screen img.domain-context-image {
  filter: brightness(0.72) saturate(0.78) contrast(1.06);
}

.hardware-overlay-badge {
  position: absolute;
  left: 12px;
  bottom: 12px;
  background: rgba(4, 18, 34, 0.88);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  padding: 6px 12px;
  font-size: 10px;
  line-height: 1.35;
}

.hardware-overlay-badge b {
  display: block;
  color: #38bdf8;
  letter-spacing: 0.05em;
}

.hardware-overlay-badge span {
  color: #e2e8f0;
}

.hardware-grid-preview {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.preview-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  padding: 8px;
}

.preview-chip img {
  width: 32px;
  height: 32px;
  object-fit: contain;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 5px;
  padding: 3px;
  flex-shrink: 0;
}

.preview-chip strong {
  display: block;
  color: #ffffff;
  font-size: 11px;
  line-height: 1.2;
}

.preview-chip span {
  color: #8fa7be;
  font-size: 9.5px;
  margin-top: 1px;
  display: block;
}

/* ==========================================================================
   HERO ASSURANCE / TRUST BAR
   ========================================================================== */
.hero-assurance-bar,
.trust {
  background: var(--navy-dark);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid #e2e8f0;
  padding: 16px 0;
  margin-top: 48px;
}

.assurance-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  align-items: center;
}

.assurance-item {
  display: flex;
  align-items: center;
  gap: 12px;
}

.assurance-item i {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: rgba(56, 189, 248, 0.12);
  color: #38bdf8;
  font-weight: 800;
  font-size: 12px;
  font-style: normal;
  flex-shrink: 0;
}

.assurance-item b {
  display: block;
  color: #ffffff;
  font-size: 13.5px;
  font-weight: 750;
}

.assurance-item span {
  display: block;
  color: #8fa7be;
  font-size: 11px;
  margin-top: 2px;
  line-height: 1.3;
}

/* ==========================================================================
   CONTENT SECTIONS & GRIDS
   ========================================================================== */
.section {
  padding: 56px 0;
  border-bottom: 1px solid #edf2f7;
  background: #ffffff;
}

.section.soft {
  background: var(--soft);
}

.section-head {
  max-width: 840px;
  margin-bottom: 32px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--blue);
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.section-head h2 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(28px, 2.5vw, 36px);
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.section-head p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.6;
}

/* Three Grid & Cards */
.three-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #ffffff;
  box-shadow: 0 4px 16px rgba(10, 35, 60, 0.04);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-3px);
  border-color: #0284c7;
  box-shadow: 0 12px 28px rgba(2, 132, 199, 0.09);
}

.card b {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 9px;
  background: #e0f2fe;
  color: #0369a1;
  font-size: 12px;
  font-weight: 850;
}

.card h3 {
  margin: 16px 0 8px;
  color: var(--navy);
  font-size: 17px;
  line-height: 1.3;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.55;
}

/* Four Grid Modules */
.four-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.module-card {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #ffffff;
  box-shadow: 0 4px 14px rgba(10, 35, 60, 0.04);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.module-card:hover {
  transform: translateY(-2px);
  border-color: #0284c7;
  box-shadow: 0 10px 24px rgba(2, 132, 199, 0.08);
}

.module-card .tag {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 6px;
  background: #e0f2fe;
  color: #0369a1;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.03em;
  margin-bottom: 12px;
}

.module-card h4 {
  margin: 0 0 8px;
  color: var(--navy);
  font-size: 16px;
  line-height: 1.3;
}

.module-card p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

/* Hardware Products Showcase in Solution Pages */
.solution-products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 24px;
}

.solution-product-card {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #ffffff;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 4px 16px rgba(10, 35, 60, 0.04);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.solution-product-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(2, 132, 199, 0.09);
  border-color: #0284c7;
}

.sol-prod-badge {
  padding: 12px 16px 0;
  font-size: 10.5px;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: #0284c7;
}

.sol-prod-thumb {
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px;
  background: #f8fafc;
}

.sol-prod-thumb img {
  max-height: 110px;
  width: auto;
  object-fit: contain;
}

.sol-prod-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.sol-prod-body h4 {
  margin: 0 0 6px;
  color: var(--navy);
  font-size: 15px;
  line-height: 1.3;
}

.sol-prod-sku {
  font-size: 11px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  color: #64748b;
  margin-bottom: 8px;
}

.sol-prod-body p {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.5;
  flex-grow: 1;
}

.sol-prod-action {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  border-top: 1px solid #f1f5f9;
}

.sol-prod-action .btn-sm {
  min-height: 36px;
  padding: 0 14px;
  font-size: 11.5px;
  font-weight: 750;
  border-radius: 7px;
  background: var(--blue-gradient);
  color: #ffffff;
  border: 0;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(2, 132, 199, 0.2);
}

.sol-prod-stock {
  font-size: 11px;
  font-weight: 700;
  color: #15803d;
}

/* Engineering Architecture Highlight Block */
.arch {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 20px;
}

.arch-intro {
  padding: 32px;
  border-radius: 16px;
  background: var(--navy);
  color: #ffffff;
}

.arch-intro .eyebrow {
  color: #38bdf8;
}

.arch-intro h2 {
  margin: 0;
  font-size: 28px;
  line-height: 1.15;
  color: #ffffff;
}

.arch-intro p {
  margin: 14px 0 0;
  color: #cbdbe9;
  font-size: 14px;
  line-height: 1.6;
}

.arch-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.arch-list div {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #ffffff;
  box-shadow: 0 4px 14px rgba(10, 35, 60, 0.04);
}

.arch-list b {
  display: block;
  color: var(--navy);
  font-size: 15px;
}

.arch-list span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.5;
}

/* 5 Steps Engineering Process */
.process {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}

.process div {
  padding: 20px 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #ffffff;
  box-shadow: 0 4px 12px rgba(10, 35, 60, 0.03);
}

.process b {
  display: inline-block;
  color: #0284c7;
  font-size: 13px;
  font-weight: 850;
  margin-bottom: 4px;
}

.process h3 {
  margin: 6px 0 6px;
  font-size: 15px;
  color: var(--navy);
}

.process p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

/* Call to Action Banner */
.cta {
  background: linear-gradient(105deg, #071b31 0%, #0b3762 100%);
  color: #ffffff;
  border-bottom: 0;
  padding: 48px 0;
}

.cta-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 32px;
}

.cta h2 {
  margin: 0;
  font-size: 30px;
  line-height: 1.15;
  color: #ffffff;
}

.cta p {
  margin: 8px 0 0;
  color: #cbdbe9;
  font-size: 14.5px;
}

.cta .btn {
  background: #ffffff;
  color: var(--navy);
  font-weight: 800;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  min-height: 48px;
  padding: 0 28px;
}

.cta .btn:hover {
  background: #f1f5f9;
  transform: translateY(-1px);
}

/* ==========================================================================
   UNIVERSAL ENTERPRISE FOOTER (Full 5-Column WST Architecture)
   ========================================================================== */
.site-footer {
  background: #061629;
  color: #dce6ee;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.35fr repeat(4, 1fr);
  gap: 34px;
  padding-top: 48px;
  padding-bottom: 36px;
}

.footer-brand img {
  width: 124px;
  height: auto;
  background: #ffffff;
  padding: 5px 10px;
  border-radius: 8px;
}

.footer-brand p {
  max-width: 260px;
  margin: 16px 0 0;
  color: #93a9ba;
  font-size: 11.5px;
  line-height: 1.55;
}

.footer-grid h3 {
  margin: 0 0 14px;
  color: #ffffff;
  font-size: 13px;
  font-weight: 750;
  letter-spacing: 0.02em;
}

.footer-grid a, .footer-grid span {
  display: block;
  margin: 8px 0;
  color: #9eb0bf;
  font-size: 11px;
  line-height: 1.4;
}

.footer-grid a:hover {
  color: #ffffff;
}

.footer-langs {
  display: flex;
  margin-top: 14px;
  gap: 4px;
}

.footer-langs button {
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.06);
  color: #cbdbe9;
  font-size: 11px;
  font-weight: 800;
  padding: 5px 8px;
  border-radius: 6px;
  cursor: pointer;
}

.footer-langs button.is-active {
  background: var(--blue);
  color: #ffffff;
  border-color: var(--blue);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-top: 18px;
  padding-bottom: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: #788e9f;
  font-size: 11px;
}

/* Sticky Mobile Conversion Bar */
.mobile-conversion {
  display: none;
}

/* ==========================================================================
   RESPONSIVE BREAKPOINTS (1180px, 880px, 620px, 390px)
   ========================================================================== */
@media (max-width: 1180px) {
  .hero-grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(460px, 1.05fr);
    gap: 32px;
  }
  .four-grid, .solution-products-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1.25fr repeat(4, 1fr);
    gap: 24px;
  }
}

@media (max-width: 880px) {
  .header-inner {
    height: 66px;
  }
  .site-nav {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 72px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    background: var(--navy);
    box-shadow: 0 16px 38px rgba(0, 0, 0, 0.35);
  }
  .site-nav.is-open {
    display: flex;
  }
  .site-nav a {
    padding: 12px 14px;
    border-radius: 8px;
    font-size: 14px;
  }
  .site-nav a:hover {
    background: rgba(255, 255, 255, 0.08);
  }
  .nav-toggle {
    display: block;
  }
  .header-cta {
    display: none;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .three-grid {
    grid-template-columns: 1fr;
  }
  .arch {
    grid-template-columns: 1fr;
  }
  .process {
    grid-template-columns: repeat(2, 1fr);
  }
  .assurance-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .cta-inner {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .footer-grid {
    grid-template-columns: 1.2fr 1fr 1fr;
    row-gap: 28px;
  }
}

@media (max-width: 620px) {
  body {
    padding-bottom: calc(64px + env(safe-area-inset-bottom));
  }
  .site-topbar {
    display: none;
  }
  .header-inner {
    height: 62px;
  }
  .brand img {
    width: 108px;
  }
  .hero {
    padding-top: 28px;
  }
  .hero h1 {
    font-size: 32px;
    line-height: 1.1;
  }
  .hero .lead {
    font-size: 14px;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .hero-actions .btn {
    width: 100%;
    min-height: 46px;
  }
  .hardware-grid-preview {
    grid-template-columns: repeat(2, 1fr);
  }
  .four-grid, .solution-products-grid {
    grid-template-columns: 1fr;
  }
  .arch-list {
    grid-template-columns: 1fr;
  }
  .process {
    grid-template-columns: 1fr;
  }
  .assurance-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px 16px;
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 6px;
  }
  .mobile-conversion {
    position: fixed;
    z-index: 140;
    left: 8px;
    right: 8px;
    bottom: 8px;
    display: grid;
    grid-template-columns: 0.75fr 1.25fr;
    gap: 8px;
    padding: 8px;
    border: 1px solid rgba(210, 224, 236, 0.96);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 14px 32px rgba(7, 29, 52, 0.22);
    backdrop-filter: blur(12px);
  }
  .mobile-conversion a {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    border-radius: 8px;
    font-size: 12.5px;
    font-weight: 800;
  }
  .mobile-call {
    border: 1px solid #cbd8e5;
    color: var(--navy);
    background: #ffffff;
  }
  .mobile-estimate {
    color: #ffffff;
    background: var(--blue-gradient);
  }
}

@media (max-width: 390px) {
  .hero h1 {
    font-size: 28px;
  }
  .assurance-grid {
    grid-template-columns: 1fr;
  }
}