/* ═══════════════════════════════════════════
   VoxBridge Design Tokens & Component Styles
   Translation Earphones · B2B Global
   ═══════════════════════════════════════════ */

/* ── CSS Custom Properties ── */
:root {
  --color-bg: #FAFAF9;
  --color-surface: #FFFFFF;
  --color-primary: #0A1628;
  --color-primary-light: #152238;
  --color-accent: #C8A45C;
  --color-accent-hover: #D4B56E;
  --color-text: #1A1A1A;
  --color-text-secondary: #5A5A5A;
  --color-text-light: #8A8A8A;
  --color-border: #E8E5E0;
  --color-success: #2D8B5E;
  --color-error: #C84B3E;

  --font-display: Georgia, 'Times New Roman', 'Noto Serif', serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', monospace;

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 32px;
  --space-xl: 48px;
  --space-2xl: 64px;
  --space-3xl: 96px;
  --space-4xl: 128px;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;

  --max-width: 1200px;
  --max-width-narrow: 800px;
  --max-width-text: 640px;

  --shadow-sm: 0 1px 3px rgba(10,22,40,0.06);
  --shadow-md: 0 4px 16px rgba(10,22,40,0.08);
  --shadow-lg: 0 12px 40px rgba(10,22,40,0.10);
  --shadow-xl: 0 24px 64px rgba(10,22,40,0.12);

  --transition-fast: 180ms ease;
  --transition-base: 280ms ease;
  --transition-slow: 420ms ease;
}

/* ── Reset ── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
}

img, svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

ul, ol {
  list-style: none;
}

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

/* ── Typography ── */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.15;
  color: var(--color-primary);
}

h1 { font-size: 3.5rem; letter-spacing: -0.015em; }
h2 { font-size: 2.5rem; letter-spacing: -0.01em; }
h3 { font-size: 1.75rem; letter-spacing: -0.005em; }
h4 { font-size: 1.25rem; }

.display-lg { font-family: var(--font-display); font-size: 4.5rem; font-weight: 400; letter-spacing: -0.02em; line-height: 1.05; }
.display-md { font-family: var(--font-display); font-size: 3rem; font-weight: 400; letter-spacing: -0.015em; line-height: 1.1; }
.text-lead { font-size: 1.25rem; line-height: 1.75; color: var(--color-text-secondary); }
.text-sm { font-size: 0.875rem; line-height: 1.6; }
.text-xs { font-size: 0.75rem; letter-spacing: 0.05em; text-transform: uppercase; }
.text-meta { font-size: 0.75rem; color: var(--color-text-light); letter-spacing: 0.04em; text-transform: uppercase; }
.text-accent { color: var(--color-accent); }

/* ── Utility ── */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--space-lg); }
.container-narrow { max-width: var(--max-width-narrow); margin: 0 auto; padding: 0 var(--space-lg); }
.section { padding: var(--space-4xl) 0; }
.section-sm { padding: var(--space-3xl) 0; }
.section-label { font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-accent); margin-bottom: var(--space-md); display: block; }
.text-center { text-align: center; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* ── Navigation ── */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(250,250,249,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-base);
}
.site-header.scrolled {
  border-bottom-color: var(--color-border);
}
.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
}
.nav-brand {
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: -0.01em;
  color: var(--color-primary);
  font-weight: 400;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}
.nav-links a {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  position: relative;
  padding: var(--space-xs) 0;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 1px;
  background: var(--color-primary);
  transition: width var(--transition-base);
}
.nav-links a:hover, .nav-links a.active {
  color: var(--color-primary);
}
.nav-links a:hover::after, .nav-links a.active::after {
  width: 100%;
}
.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: var(--space-sm) var(--space-lg);
  background: var(--color-primary);
  color: #fff !important;
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: background var(--transition-fast);
}
.nav-cta:hover { background: var(--color-primary-light); }
.nav-cta::after { display: none !important; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
}
.nav-toggle span {
  display: block;
  width: 22px; height: 1.5px;
  background: var(--color-primary);
  transition: transform var(--transition-base), opacity var(--transition-base);
}
.nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(4px,-4px); }

/* ── Hero (Full-bleed) ── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}
.hero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 35%;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(10,22,40,0.08) 0%,
    rgba(10,22,40,0.18) 30%,
    rgba(10,22,40,0.45) 55%,
    rgba(10,22,40,0.82) 100%
  );
}
.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg) var(--space-4xl);
  color: #fff;
}
.hero-content h1 {
  color: #fff;
  max-width: 700px;
  margin-bottom: var(--space-lg);
}
.hero-content .text-lead {
  color: rgba(255,255,255,0.75);
  max-width: 520px;
  margin-bottom: var(--space-lg);
}
.hero-content .btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 14px 32px;
  background: var(--color-accent);
  color: var(--color-primary);
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast);
}
.hero-content .btn-primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
}
.hero-stats {
  display: flex;
  gap: var(--space-2xl);
  margin-top: var(--space-xl);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255,255,255,0.15);
}
.hero-stat-value {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--color-accent);
  line-height: 1;
}
.hero-stat-label {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-top: var(--space-xs);
}

/* ── Sub-Hero ── */
.sub-hero {
  position: relative;
  min-height: 52vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  margin-bottom: var(--space-4xl);
}
.sub-hero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 35%;
}
.sub-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(10,22,40,0.10) 0%, rgba(10,22,40,0.75) 100%);
}
.sub-hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg) var(--space-2xl);
  color: #fff;
}
.sub-hero-content h1 {
  color: #fff;
  margin-bottom: var(--space-sm);
}
.sub-hero-content p {
  color: rgba(255,255,255,0.70);
  max-width: 480px;
  font-size: 1.0625rem;
  line-height: 1.6;
}

/* ── Button System ── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 14px 32px;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}
.btn-primary:hover { background: var(--color-primary-light); transform: translateY(-1px); }
.btn-accent {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 14px 32px;
  background: var(--color-accent);
  color: var(--color-primary);
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}
.btn-accent:hover { background: var(--color-accent-hover); transform: translateY(-1px); }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 14px 32px;
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}
.btn-outline:hover { background: var(--color-primary); color: #fff; }
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  background: none;
  color: var(--color-primary);
  border: none;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color var(--transition-fast);
}
.btn-ghost:hover { border-color: var(--color-primary); }

/* ── Media Split ── */
.media-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 0;
  min-height: 560px;
}
.media-text {
  padding: var(--space-4xl);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.media-text h2 { margin-bottom: var(--space-md); }
.media-text p { color: var(--color-text-secondary); line-height: 1.75; margin-bottom: var(--space-md); }
.media-text .stat-number {
  font-family: var(--font-display);
  font-size: 3rem;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-xs);
}
.media-text .stat-desc { font-size: 0.8125rem; color: var(--color-text-light); letter-spacing: 0.04em; text-transform: uppercase; }
.media-img-wrap {
  position: relative;
  overflow: hidden;
  height: 100%;
  min-height: 560px;
}
.media-img-wrap img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-split.reversed .media-text { order: 1; }
.media-split.reversed .media-img-wrap { order: 2; }

/* ── Card Grid ── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}
.card-grid.col2 { grid-template-columns: repeat(2, 1fr); }
.card-grid.col4 { grid-template-columns: repeat(4, 1fr); }
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}
.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}
.card-img {
  aspect-ratio: 4/3;
  overflow: hidden;
}
.card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.card:hover .card-img img { transform: scale(1.03); }
.card-body {
  padding: var(--space-lg);
}
.card-body h3 { font-size: 1.25rem; margin-bottom: var(--space-sm); }
.card-body p { font-size: 0.9375rem; color: var(--color-text-secondary); line-height: 1.65; }
.card-tag {
  display: inline-block;
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

/* ── Stats Bar ── */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  padding: var(--space-2xl) 0;
}
.stat-item { text-align: center; padding: var(--space-md); }
.stat-value {
  font-family: var(--font-display);
  font-size: 2.75rem;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-sm);
}
.stat-value .highlight { color: var(--color-accent); }
.stat-label {
  font-size: 0.75rem;
  color: var(--color-text-light);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ── Cert Strip ── */
.cert-strip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2xl);
  padding: var(--space-lg) 0;
  flex-wrap: wrap;
}
.cert-item {
  font-size: 0.8125rem;
  color: var(--color-text-light);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}
.cert-item:hover { opacity: 1; }

/* ── CTA Card ── */
.cta-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  padding: var(--space-4xl) var(--space-2xl);
  text-align: center;
  color: #fff;
}
.cta-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/generated/cta-bg-1.webp') center/cover no-repeat;
  opacity: 0.35;
  z-index: 0;
}
.cta-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,22,40,0.85) 0%, rgba(10,22,40,0.70) 100%);
  z-index: 1;
}
.cta-card > * {
  position: relative;
  z-index: 2;
}
.cta-card h2 {
  color: #fff;
  font-size: 2.25rem;
  margin-bottom: var(--space-md);
}
.cta-card p {
  color: rgba(255,255,255,0.65);
  max-width: 480px;
  margin: 0 auto var(--space-lg);
  font-size: 1.0625rem;
  line-height: 1.6;
}
.cta-card .btn-accent {
  background: var(--color-accent);
  color: var(--color-primary);
  font-weight: 600;
}
.cta-card .btn-accent:hover {
  background: var(--color-accent-hover);
}

/* ── Feature List ── */
.feature-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}
.feature-item {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--color-border);
}
.feature-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
}
.feature-text h4 { font-family: var(--font-body); font-size: 1rem; font-weight: 600; color: var(--color-primary); margin-bottom: var(--space-xs); }
.feature-text p { font-size: 0.9375rem; color: var(--color-text-secondary); line-height: 1.6; }

/* ── Spec Table ── */
.spec-table {
  width: 100%;
  border-collapse: collapse;
}
.spec-table tr { border-bottom: 1px solid var(--color-border); }
.spec-table td {
  padding: var(--space-md) 0;
  font-size: 0.9375rem;
}
.spec-table td:first-child {
  color: var(--color-text-light);
  width: 220px;
  font-size: 0.8125rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.spec-table td:last-child {
  color: var(--color-text);
  font-weight: 500;
}

/* ── Contact Form ── */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  max-width: 520px;
}
.form-group { display: flex; flex-direction: column; gap: var(--space-sm); }
.form-group label {
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text-light);
}
.form-group input,
.form-group textarea,
.form-group select {
  padding: 14px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  font-size: 0.9375rem;
  transition: border-color var(--transition-fast);
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
}
.form-group textarea { min-height: 140px; resize: vertical; }

/* ── Modal Inquiry (Dual-panel) ── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(10,22,40,0.6);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
}
.modal-overlay.active { display: flex; }
.modal-dialog {
  display: grid;
  grid-template-columns: 1fr 1fr;
  max-width: 760px;
  width: 100%;
  max-height: 92vh;
  overflow: hidden;
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  position: relative;
}
.modal-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  z-index: 10;
  width: 36px;
  height: 36px;
  border: none;
  background: rgba(255,255,255,0.9);
  border-radius: 50%;
  font-size: 1.25rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  transition: background var(--transition-fast);
}
.modal-close:hover { background: #fff; }
.modal-image-panel {
  position: relative;
  overflow: hidden;
  min-height: 100%;
}
.modal-image-panel img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.modal-image-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,22,40,0.12) 0%, rgba(10,22,40,0.45) 50%, rgba(10,22,40,0.82) 100%);
}
.modal-image-text {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: var(--space-lg);
  color: #fff;
  z-index: 2;
}
.mi-label {
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}
.mi-value {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: rgba(255,255,255,0.85);
}
.mi-value strong { color: #fff; font-weight: 600; }
.modal-form-panel {
  padding: var(--space-lg) var(--space-md);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.modal-form-panel h2 {
  font-size: 1.5rem;
  margin-bottom: var(--space-xs);
}
.mf-subtitle {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
  line-height: 1.5;
}
.modal-form-panel .contact-form {
  max-width: 100%;
}
.modal-form-panel .form-group textarea {
  min-height: 100px;
}

/* ── Footer ── */
.site-footer {
  background: var(--color-primary);
  color: rgba(255,255,255,0.6);
  padding: var(--space-4xl) 0 var(--space-lg);
  margin-top: var(--space-4xl);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}
.footer-col h4 {
  color: #fff;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}
.footer-brand {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: #fff;
  margin-bottom: var(--space-sm);
}
.footer-col p { font-size: 0.875rem; line-height: 1.65; margin-bottom: var(--space-sm); }
.footer-col a {
  display: block;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.5);
  padding: var(--space-xs) 0;
  transition: color var(--transition-fast);
}
.footer-col a:hover { color: var(--color-accent); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.35);
}

/* ── Reveal Animation ── */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.10s; }
.reveal-delay-2 { transition-delay: 0.20s; }
.reveal-delay-3 { transition-delay: 0.30s; }

/* ── Process Steps ── */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  counter-reset: step;
}
.process-step {
  position: relative;
  padding: var(--space-lg);
  text-align: center;
}
.process-step::before {
  counter-increment: step;
  content: "0" counter(step);
  font-family: var(--font-display);
  font-size: 2.5rem;
  color: var(--color-accent);
  display: block;
  margin-bottom: var(--space-md);
  line-height: 1;
}
.process-step h4 { font-family: var(--font-body); font-size: 1rem; font-weight: 600; margin-bottom: var(--space-xs); }
.process-step p { font-size: 0.875rem; color: var(--color-text-secondary); line-height: 1.6; }

/* ── Accordion/FAQ ── */
.faq-list { max-width: var(--max-width-narrow); margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--color-border); }
.faq-q {
  width: 100%;
  padding: var(--space-lg) 0;
  background: none;
  border: none;
  text-align: left;
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--color-primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
}
.faq-q::after {
  content: '+';
  font-size: 1.25rem;
  font-weight: 300;
  color: var(--color-accent);
  transition: transform var(--transition-base);
}
.faq-item.open .faq-q::after { transform: rotate(45deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base), padding var(--transition-base);
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}
.faq-item.open .faq-a {
  max-height: 300px;
  padding-bottom: var(--space-lg);
}

/* ── Blog Card ── */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}
.blog-card {
  display: block;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}
.blog-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}
.blog-card-img {
  aspect-ratio: 4/3;
  overflow: hidden;
}
.blog-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.blog-card:hover .blog-card-img img { transform: scale(1.03); }
.blog-card-body { padding: var(--space-lg); }
.blog-card-body h3 { font-size: 1.125rem; margin-bottom: var(--space-sm); }
.blog-card-body p { font-size: 0.875rem; color: var(--color-text-secondary); line-height: 1.55; }
.blog-card-meta {
  font-size: 0.75rem;
  color: var(--color-text-light);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ── Solution Grid ── */
.solution-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}
.solution-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 3/2;
}
.solution-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.solution-card:hover img { transform: scale(1.04); }
.solution-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,22,40,0.8) 0%, rgba(10,22,40,0.3) 50%, rgba(10,22,40,0.1) 100%);
}
.solution-card-content {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: var(--space-lg);
  color: #fff;
}
.solution-card-content h3 { color: #fff; font-size: 1.25rem; margin-bottom: var(--space-xs); }
.solution-card-content p { font-size: 0.875rem; color: rgba(255,255,255,0.7); line-height: 1.5; }

/* ── Inline Image ── */
.inline-img-lg {
  width: 70%;
  margin: var(--space-2xl) auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

/* ── Two Column ── */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  h1 { font-size: 2.75rem; }
  h2 { font-size: 2rem; }
  .display-lg { font-size: 3rem; }
  .display-md { font-size: 2.25rem; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .card-grid.col4 { grid-template-columns: repeat(2, 1fr); }
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .solution-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .two-col { grid-template-columns: 1fr; gap: var(--space-lg); }
}

@media (max-width: 768px) {
  :root {
    --space-4xl: 80px;
    --space-3xl: 64px;
    --space-2xl: 48px;
  }
  h1 { font-size: 2.25rem; }
  h2 { font-size: 1.75rem; }
  .display-lg { font-size: 2.25rem; }
  .display-md { font-size: 1.75rem; }

  .nav-toggle { display: flex; z-index: 101; }
  .nav-links {
    display: none;
    position: fixed;
    inset: 0;
    background: var(--color-bg);
    flex-direction: column;
    justify-content: center;
    gap: var(--space-lg);
    z-index: 100;
  }
  .nav-links.open { display: flex; }

  .media-split {
    grid-template-columns: 1fr;
    min-height: auto;
  }
  .media-split.reversed .media-text,
  .media-split.reversed .media-img-wrap { order: 0; }
  .media-text { padding: var(--space-lg); }
  .media-img-wrap { min-height: 320px; }

  .card-grid { grid-template-columns: 1fr; }
  .card-grid.col2 { grid-template-columns: 1fr; }
  .card-grid.col4 { grid-template-columns: 1fr; }
  .blog-grid { grid-template-columns: 1fr; }
  .feature-list { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); gap: var(--space-md); }
  .process-steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-lg); }
  .footer-bottom { flex-direction: column; gap: var(--space-sm); text-align: center; }

  .hero-content { padding-bottom: var(--space-2xl); }
  .hero-stats { flex-wrap: wrap; gap: var(--space-lg); }
  .hero-stat-value { font-size: 1.5rem; }

  .sub-hero { min-height: 36vh; }
  .sub-hero-content h1 { font-size: 1.75rem; }

  .cta-card { padding: var(--space-2xl) var(--space-lg); }
  .cta-card h2 { font-size: 1.5rem; }

  .inline-img-lg { width: 100%; }
  .spec-table td:first-child { width: 140px; font-size: 0.75rem; }

  .modal-dialog {
    grid-template-columns: 1fr;
    max-width: 420px;
  }
  .modal-image-panel { min-height: 160px; max-height: 200px; }
  .modal-form-panel { padding: var(--space-md); }
  .modal-form-panel h2 { font-size: 1.25rem; }
}

@media (max-width: 480px) {
  .hero-stats { flex-direction: column; gap: var(--space-md); }
  .cert-strip { gap: var(--space-lg); }
}