/* ==========================================================================
   SafeOrbit — High-Impact, Lean, Professional Design System
   Powered by Neurowings
   ========================================================================== */

:root {
  /* Colors */
  --bg-white: #ffffff;
  --bg-subtle: #f8fafc;
  --bg-card: #ffffff;
  --bg-dark: #090b10;
  --bg-dark-card: #12161f;
  
  --text-main: #0f172a;
  --text-body: #334155;
  --text-muted: #64748b;
  --text-subtle: #94a3b8;
  --text-white: #f8fafc;
  --text-white-muted: #94a3b8;

  --accent-blue: #0284c7;
  --accent-blue-hover: #0369a1;
  --accent-blue-light: #f0f9ff;
  --accent-blue-border: #bae6fd;

  --accent-cyan: #61bfe3;
  --accent-cyan-light: #f0f9ff;
  --accent-cyan-border: #bae6fd;

  --accent-orange: #f79500;
  --accent-orange-hover: #ea580c;
  --accent-orange-light: #fff7ed;
  --accent-orange-border: #fed7aa;

  --status-green: #10b981;
  --status-green-light: #ecfdf5;
  --status-green-border: #a7f3d0;

  --status-amber: #f59e0b;
  --status-amber-light: #fffbeb;
  --status-amber-border: #fde68a;

  --status-red: #ef4444;
  --status-red-light: #fef2f2;
  --status-red-border: #fecaca;

  --border-light: rgba(0, 0, 0, 0.08);
  --border-subtle: rgba(0, 0, 0, 0.04);
  --border-dark: rgba(255, 255, 255, 0.1);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 26px;
  --radius-pill: 9999px;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.08);
  --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.1);

  --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* ==========================================================================
   RESET & BASE
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-white);
  color: var(--text-body);
  line-height: 1.65;
  overflow-x: hidden;
  letter-spacing: -0.01em;
  width: 100%;
  position: relative;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--text-main);
  line-height: 1.2;
  letter-spacing: -0.03em;
  font-weight: 700;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

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

button, input, select {
  font-family: inherit;
  font-size: inherit;
}

/* ==========================================================================
   UTILITY & TYPOGRAPHY
   ========================================================================== */
.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5.5rem 0;
  position: relative;
}

.bg-light { background-color: var(--bg-subtle); }
.text-center { text-align: center; }
.text-blue { color: var(--accent-blue); }
.text-emerald { color: var(--status-green); }
.text-amber { color: var(--status-amber); }
.text-red { color: var(--status-red); }
.text-muted { color: var(--text-muted); }
.text-sm { font-size: 0.875rem; }

.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.max-w-700 { max-width: 700px; margin-left: auto; margin-right: auto; }
.desktop-br { display: inline; }

.section-kicker {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-blue);
  background-color: var(--accent-blue-light);
  padding: 0.35rem 0.95rem;
  border-radius: var(--radius-pill);
  margin-bottom: 1rem;
  border: 1px solid var(--accent-blue-border);
}

.section-intro {
  max-width: 720px;
  margin: 0 auto 3.5rem auto;
}

.section-heading {
  font-size: clamp(1.85rem, 3.4vw, 2.5rem);
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1.08rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 0.8rem 1.75rem;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  min-height: 48px;
  touch-action: manipulation;
}

.btn-sm {
  padding: 0.5rem 1.25rem;
  font-size: 0.85rem;
  min-height: 40px;
}

.btn-lg {
  padding: 1rem 2.25rem;
  font-size: 1.05rem;
  min-height: 52px;
}

.btn-block {
  width: 100%;
}

.btn-primary {
  background-color: var(--text-main);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.12);
}

.btn-primary:hover {
  background-color: #1e293b;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.18);
}

.btn-secondary {
  background-color: #ffffff;
  color: var(--text-main);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background-color: var(--bg-subtle);
  border-color: #cbd5e1;
  transform: translateY(-2px);
}

.btn-danger-glow {
  background-color: var(--status-red);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(239, 68, 68, 0.35);
}

.btn-danger-glow:hover {
  background-color: #dc2626;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(239, 68, 68, 0.5);
}

/* Indicators */
.status-pulse-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.status-pulse-dot.green { background: var(--status-green); }
.status-pulse-dot.amber { background: var(--status-amber); }
.status-pulse-dot.red { background: var(--status-red); }
.status-pulse-dot.blue { background: var(--accent-blue); }

.status-pill {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.status-pill.green { background: var(--status-green-light); color: #065f46; border: 1px solid var(--status-green-border); }
.status-pill.blue { background: var(--accent-blue-light); color: #0369a1; border: 1px solid var(--accent-blue-border); }
.status-pill.orange { background: var(--accent-orange-light); color: #c2410c; border: 1px solid var(--accent-orange-border); }
.status-pulse-dot.orange { background: var(--accent-orange); }

/* Grid */
.grid-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

/* ==========================================================================
   1. NAVIGATION
   ========================================================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-light);
  transition: all 0.2s ease;
}

.nav-container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-link {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
}

.nav-logo {
  height: 28px;
  width: auto;
  object-fit: contain;
}

.brand-byline {
  font-size: 0.6875rem;
  color: var(--text-muted);
  letter-spacing: 0.03em;
  font-weight: 500;
  line-height: 1;
}

.brand-byline strong {
  color: var(--text-main);
  font-weight: 700;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-item {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-body);
}

.nav-item:hover {
  color: var(--accent-blue);
}

.mobile-menu-top,
.mobile-menu-bottom {
  display: none;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.hamburger-btn {
  display: none;
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.hamburger-btn .bar {
  width: 20px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
}

.menu-backdrop {
  display: none;
}

/* ==========================================================================
   2. HERO SECTION & PICTORIAL COMPOSITION
   ========================================================================== */
.hero-section {
  padding-top: 8rem;
  padding-bottom: 4.5rem;
  background: linear-gradient(180deg, #f8faff 0%, #ffffff 100%);
  position: relative;
  overflow: hidden;
}

.hero-container {
  display: grid;
  grid-template-columns: 1.15fr 0.9fr;
  gap: 3.5rem;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-content {
  text-align: left;
}

.hero-eyebrow {
  margin-bottom: 1.25rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-blue);
  background-color: var(--accent-blue-light);
  padding: 0.4rem 1.1rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--accent-blue-border);
}

.hero-heading {
  font-size: clamp(2.35rem, 4.4vw, 3.6rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.25rem;
  color: var(--text-main);
  letter-spacing: -0.03em;
}

.hero-highlight {
  color: var(--accent-blue);
  background: linear-gradient(135deg, #0284c7 0%, #61bfe3 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-desc {
  font-size: 1.125rem;
  color: var(--text-muted);
  line-height: 1.68;
  margin-bottom: 2rem;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2.25rem;
  flex-wrap: wrap;
}

.hero-stats-strip {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1.25rem 0;
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.stat-block {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.stat-value {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-main);
}

.stat-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.stat-divider {
  width: 1px;
  height: 32px;
  background: var(--border-light);
}

/* Hero Pictorial Stage */
.hero-visual-stage {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 520px;
}

.stage-ambient-glow {
  position: absolute;
  width: 420px;
  height: 420px;
  max-width: 100%;
  background: radial-gradient(circle, rgba(97, 191, 227, 0.22) 0%, rgba(247, 149, 0, 0.1) 45%, transparent 70%);
  border-radius: 50%;
  z-index: 1;
  pointer-events: none;
}

.hero-phone-wrap {
  position: relative;
  z-index: 2;
  max-width: 440px;
  width: 100%;
}

.hero-phone-screen {
  width: 100%;
  height: auto;
  display: block;
  filter: drop-shadow(0 20px 45px rgba(15, 23, 42, 0.16));
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-phone-wrap:hover .hero-phone-screen {
  transform: translateY(-4px);
}

.hero-device-floating-badge {
  position: absolute;
  bottom: 8%;
  left: -6%;
  z-index: 3;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-light);
  padding: 0.65rem 1rem 0.65rem 0.75rem;
  border-radius: 16px;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.09);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.hero-device-badge-img {
  width: 54px;
  height: auto;
  display: block;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

.badge-mini-caption strong {
  display: block;
  font-size: 0.85rem;
  color: var(--text-main);
  line-height: 1.25;
}

.badge-mini-caption span {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.hero-metrics-container {
  margin-top: 4.5rem;
  position: relative;
  z-index: 2;
}

.hero-metrics-bar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  border-top: 1px solid var(--border-light);
  padding-top: 2.25rem;
  text-align: left;
}

.metric-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.metric-num {
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--accent-blue);
  background: var(--accent-blue-light);
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.metric-text strong {
  display: block;
  font-size: 0.95rem;
  color: var(--text-main);
  margin-bottom: 0.2rem;
}

.metric-text span {
  font-size: 0.84rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ==========================================================================
   3. THE PARADIGM SHIFT (SPLIT CARD VISUAL COMPARISON)
   ========================================================================== */
.philosophy-section {
  border-top: 1px solid var(--border-light);
}

.paradigm-comparison-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  max-width: 1060px;
  margin: 0 auto;
}

.comp-card {
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.traditional-comp-card {
  background: #f8fafc;
  border-color: #e2e8f0;
}

.safeorbit-comp-card {
  background: #ffffff;
  border: 2px solid var(--accent-blue-border);
  box-shadow: 0 12px 35px rgba(2, 132, 199, 0.1);
}

.safeorbit-comp-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 45px rgba(2, 132, 199, 0.16);
}

.comp-card-header {
  margin-bottom: 1.25rem;
}

.comp-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-pill);
  margin-bottom: 0.85rem;
}

.comp-badge.muted {
  background: #e2e8f0;
  color: #475569;
}

.comp-badge.brand {
  background: var(--accent-blue-light);
  color: var(--accent-blue);
  border: 1px solid var(--accent-blue-border);
}

.comp-card-header h3 {
  font-size: 1.35rem;
  margin-bottom: 0.4rem;
}

.comp-subtitle {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.comp-status-visual {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  font-size: 0.8125rem;
  font-weight: 600;
}

.traditional-visual {
  background: #edeef2;
  color: #64748b;
  border: 1px dashed #cbd5e1;
}

.safeorbit-visual {
  background: var(--status-green-light);
  color: #065f46;
  border: 1px solid var(--status-green-border);
}

.comp-visual-inner {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.comp-points-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-top: auto;
}

.comp-point-item {
  display: flex;
  align-items: flex-start;
  gap: 0.95rem;
  background: #ffffff;
  padding: 1rem 1.15rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
}

.traditional-comp-card .comp-point-item {
  background: #ffffff;
  border-color: #e2e8f0;
}

.point-tag-badge {
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #64748b;
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  margin-top: 2px;
  flex-shrink: 0;
}

.point-icon-box {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--accent-blue-light);
  color: var(--accent-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.point-text strong {
  display: block;
  font-size: 0.94rem;
  color: var(--text-main);
  margin-bottom: 0.2rem;
}

.point-text p {
  font-size: 0.84rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.paradigm-quote-banner blockquote {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-main);
  max-width: 680px;
  margin: 0 auto;
}

/* ==========================================================================
   4. CORE INTELLIGENCE PILLARS (USP SHOWCASE)
   ========================================================================== */
.usp-showcase-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.usp-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.usp-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent-blue-border);
}

.usp-icon-badge {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--accent-blue-light);
  color: var(--accent-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 1.25rem;
}

.usp-card h3 {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
}

.usp-card p {
  font-size: 0.95rem;
  color: var(--text-body);
  line-height: 1.65;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.usp-micro-demo {
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 0.85rem 1.15rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.waveform-mini {
  display: flex;
  align-items: center;
  gap: 3px;
  height: 20px;
}

.waveform-mini span {
  width: 3px;
  background: var(--accent-blue);
  border-radius: var(--radius-pill);
  animation: miniWave 1.2s infinite ease-in-out;
}

.waveform-mini span:nth-child(1) { height: 8px; }
.waveform-mini span:nth-child(2) { height: 16px; animation-delay: 0.1s; }
.waveform-mini span:nth-child(3) { height: 20px; animation-delay: 0.2s; }
.waveform-mini span:nth-child(4) { height: 14px; animation-delay: 0.3s; }
.waveform-mini span:nth-child(5) { height: 18px; animation-delay: 0.4s; }
.waveform-mini span:nth-child(6) { height: 10px; animation-delay: 0.5s; }

@keyframes miniWave {
  0%, 100% { transform: scaleY(0.4); }
  50% { transform: scaleY(1.2); }
}

.demo-tag {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-pill);
}

.demo-tag.red { background: var(--status-red-light); color: #991b1b; }
.demo-tag.green { background: var(--status-green-light); color: #065f46; }
.demo-tag.amber { background: var(--status-amber-light); color: #92400e; }
.demo-tag.blue { background: var(--accent-blue-light); color: #0369a1; }

/* ==========================================================================
   5. HARDWARE SPOTLIGHT (DARK SECTION)
   ========================================================================== */
.dark-showcase-section {
  position: relative;
  background: radial-gradient(circle at 85% 25%, rgba(97, 191, 227, 0.25) 0%, transparent 45%),
              radial-gradient(circle at 15% 75%, rgba(16, 185, 129, 0.14) 0%, transparent 45%),
              #090d16;
  color: var(--text-white);
  padding: 6.5rem 0;
  overflow: hidden;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.dark-showcase-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.07) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.4;
  pointer-events: none;
}

.hardware-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3.5rem;
  align-items: center;
  position: relative;
  z-index: 2;
}

.label-hardware {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #60a5fa;
  margin-bottom: 1rem;
}

.heading-white {
  color: #ffffff;
  font-size: clamp(2rem, 3.8vw, 3rem);
  margin-bottom: 1.25rem;
}

.text-white-muted {
  color: var(--text-white-muted);
  font-size: 1.08rem;
  line-height: 1.7;
  margin-bottom: 2rem;
}

.hardware-spec-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin: 1.75rem 0 2rem 0;
}

.hw-spec-item {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  padding: 1.1rem 1.35rem;
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  transition: all 0.25s ease;
}

.hw-spec-item:hover {
  background: rgba(255, 255, 255, 0.065);
  border-color: rgba(96, 165, 250, 0.4);
  transform: translateX(4px);
}

.hw-spec-num {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 800;
  color: #61bfe3;
  background: rgba(97, 191, 227, 0.18);
  border: 1px solid rgba(97, 191, 227, 0.35);
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.hw-spec-item strong {
  display: block;
  font-size: 1rem;
  color: #ffffff;
  margin-bottom: 0.25rem;
}

.hw-spec-item span {
  display: block;
  font-size: 0.88rem;
  color: var(--text-white-muted);
  line-height: 1.5;
}

.dark-hardware-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

/* Pristine Studio Showcase for Hardware */
.hardware-studio-card {
  background: #ffffff;
  border-radius: 28px;
  padding: 2.5rem 2rem 1.75rem 2rem;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.55), 0 0 45px rgba(97, 191, 227, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.25);
  position: relative;
  overflow: hidden;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  width: 100%;
  max-width: 440px;
}

.hardware-studio-card:hover {
  transform: translateY(-6px);
}

.sos-hardware-img {
  max-width: 380px;
  width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

.hardware-studio-caption {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid #f1f5f9;
  font-size: 0.78rem;
  font-weight: 600;
  color: #475569;
}

.studio-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--status-green);
}

.sos-callout-badge {
  margin-top: 1.25rem;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-pill);
  font-size: 0.8125rem;
  font-weight: 600;
  color: #f8fafc;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

/* ==========================================================================
   6. COMPANION APP SHOWCASE
   ========================================================================== */
.app-showcase-wrapper {
  max-width: 600px;
  margin: 0 auto;
}

.app-nav-tabs {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
  background: #ffffff;
  padding: 0.35rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}

.app-tab-btn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 1.35rem;
  border-radius: var(--radius-pill);
  background: none;
  border: none;
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 40px;
}

.app-tab-btn.active {
  background: var(--text-main);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.15);
}

.app-screen-container {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.app-view {
  display: none;
  padding: 2rem;
}

.app-view.active {
  display: block;
}

.status-avatar-ring {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--status-green-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 0.75rem auto;
}

.status-pill-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  margin-top: 1.25rem;
  flex-wrap: wrap;
}

.status-pill-row span {
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--bg-subtle);
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.app-latest-event-bar {
  background: var(--accent-blue-light);
  border: 1px solid var(--accent-blue-border);
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.84rem;
  color: var(--accent-blue);
  margin-top: 1.25rem;
}

.app-sub-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-light);
}

.compact-timeline-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.ctl-item {
  padding: 0.7rem 0.85rem;
  border-radius: var(--radius-sm);
  background: var(--bg-subtle);
  font-size: 0.84rem;
  color: var(--text-body);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.t-badge {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-pill);
}

.t-badge.green { background: var(--status-green-light); color: #065f46; }
.t-badge.blue { background: var(--accent-blue-light); color: #0369a1; }
.t-badge.purple { background: #f5f3ff; color: #7c3aed; }
.t-badge.amber { background: var(--status-amber-light); color: #92400e; }

.simulated-app-map {
  height: 160px;
  background: #e2e8f0;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.map-zone-pill {
  position: absolute;
  top: 10px;
  left: 10px;
  background: #ffffff;
  padding: 3px 8px;
  border-radius: var(--radius-pill);
  font-size: 0.68rem;
  font-weight: 700;
}

.map-user-tag {
  background: #ffffff;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 700;
  box-shadow: var(--shadow-sm);
}

/* ==========================================================================
   7. COMPARISON TABLE
   ========================================================================== */
.comparison-table-wrap {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 1.25rem;
  box-shadow: var(--shadow-md);
  max-width: 900px;
  margin: 0 auto;
  overflow-x: auto;
}

.clean-comp-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  min-width: 540px;
}

.clean-comp-table th,
.clean-comp-table td {
  padding: 0.9rem 1.25rem;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--border-light);
}

.clean-comp-table th {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--text-main);
  background: var(--bg-subtle);
}

.clean-comp-table tr:last-child td {
  border-bottom: none;
}

.highlight-col {
  background: rgba(97, 191, 227, 0.05);
  font-weight: 600;
}

/* ==========================================================================
   8. PARTNERSHIPS & FINAL CTA
   ========================================================================== */
.partnerships-section {
  background-color: #ffffff;
  padding: 6.5rem 0;
}

.partnership-box {
  background: linear-gradient(135deg, #ffffff 0%, #f0f9ff 100%);
  border: 1px solid var(--accent-blue-border);
  border-radius: 28px;
  padding: 3.5rem 2.5rem;
  box-shadow: 0 12px 40px rgba(2, 132, 199, 0.08);
  max-width: 860px;
  margin: 0 auto;
}

.partnership-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.contact-direct-hint {
  margin-top: 1.25rem;
}

.final-cta-section {
  padding: 7rem 0;
  background: radial-gradient(circle at 50% 50%, #f8fafc 0%, #ffffff 100%);
  border-top: 1px solid var(--border-light);
}

.cta-massive-heading {
  font-size: clamp(2.1rem, 4.4vw, 3.5rem);
  line-height: 1.15;
  margin-bottom: 1.35rem;
}

.cta-lead {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 2.25rem;
}

.final-cta-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.15rem;
  flex-wrap: wrap;
}

/* ==========================================================================
   9. FOOTER
   ========================================================================== */
.footer {
  background-color: #ffffff;
  border-top: 1px solid var(--border-light);
  padding: 4.5rem 0 2.5rem 0;
}

.footer-container {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-logo {
  height: 30px;
  width: auto;
  object-fit: contain;
  margin-bottom: 0.35rem;
}

.footer-powered {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.footer-powered strong {
  color: var(--text-main);
}

.footer-tagline {
  font-size: 0.9rem;
  color: var(--text-muted);
  max-width: 280px;
}

.footer-links-col h4 {
  font-size: 0.9375rem;
  margin-bottom: 1.15rem;
}

.footer-links-col a {
  display: block;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 0.7rem;
}

.footer-links-col a:hover {
  color: var(--accent-blue);
}

.footer-bottom {
  border-top: 1px solid var(--border-light);
  padding-top: 2rem;
  font-size: 0.8125rem;
  color: var(--text-subtle);
  text-align: center;
}

/* ==========================================================================
   MODAL
   ========================================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  background: #ffffff;
  border-radius: var(--radius-xl);
  max-width: 460px;
  width: 100%;
  padding: 2.25rem;
  box-shadow: var(--shadow-xl);
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-close-btn {
  position: absolute;
  top: 1.1rem;
  right: 1.1rem;
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 1.4rem;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.modal-logo {
  height: 26px;
  width: auto;
  margin: 0 auto 0.2rem auto;
}

.modal-byline {
  font-size: 0.6875rem;
  color: var(--text-muted);
}

.modal-kicker {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-blue);
  letter-spacing: 0.08em;
}

.modal-header h3 {
  font-size: 1.35rem;
  margin-bottom: 0.35rem;
}

.modal-form .form-group {
  margin-bottom: 1.15rem;
}

.modal-form label {
  display: block;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.35rem;
}

.modal-form input,
.modal-form select {
  width: 100%;
  padding: 0.8rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  background: var(--bg-subtle);
  outline: none;
  font-size: 16px; /* Prevents iOS auto-zoom */
  transition: border-color 0.2s ease;
  min-height: 48px;
}

.modal-form input:focus,
.modal-form select:focus {
  border-color: var(--accent-blue);
  background: #ffffff;
}

.modal-success-state {
  display: none;
  text-align: center;
  padding: 1.5rem 0;
}

.modal-success-state.active {
  display: block;
}

.modal-success-badge {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent-blue-light);
  color: var(--accent-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.65rem;
  margin: 0 auto 1.25rem auto;
}

/* ==========================================================================
   MOBILE & RESPONSIVE RULES
   ========================================================================== */
.mobile-telemetry-badge,
.mobile-table-hint {
  display: none;
}


/* ==========================================================================
   PICTORIAL APP SHOWCASE (DESKTOP)
   ========================================================================== */
.app-pictorial-section {
  background: linear-gradient(180deg, #ffffff 0%, var(--bg-subtle) 100%);
  padding: 5.5rem 0;
  position: relative;
}

.pictorial-app-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.75rem 2.25rem;
  max-width: 1040px;
  margin: 2.5rem auto 0 auto;
  align-items: stretch;
}

.app-phone-card {
  background: #ffffff;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-light);
  box-shadow: 0 12px 36px rgba(15, 23, 42, 0.07);
  padding: 2rem 1.6rem;
  display: flex;
  flex-direction: column;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.app-phone-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 24px 50px rgba(15, 23, 42, 0.12);
  border-color: var(--accent-blue-border);
}

.app-phone-card.card-span-2 {
  grid-column: 1 / -1;
  max-width: 500px;
  margin: 0 auto;
  width: 100%;
}

.phone-frame-wrap {
  width: 100%;
  max-width: 330px;
  margin: 0 auto 1.5rem auto;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.phone-screen-img {
  width: 100%;
  height: auto;
  display: block;
  filter: drop-shadow(0 16px 32px rgba(15, 23, 42, 0.22));
  transition: transform 0.35s ease;
}

.app-phone-card:hover .phone-screen-img {
  transform: scale(1.025);
}

.app-card-details {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.app-card-pill {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.3rem 0.85rem;
  border-radius: var(--radius-pill);
  background: var(--bg-subtle);
  color: var(--text-muted);
  border: 1px solid var(--border-light);
  width: fit-content;
  margin-bottom: 0.85rem;
  display: inline-block;
}

.app-card-pill.highlight {
  background: var(--accent-blue-light);
  color: var(--accent-blue);
  border-color: var(--accent-blue-border);
}

.app-card-pill.danger {
  background: var(--status-red-light);
  color: var(--status-red);
  border-color: var(--status-red-border);
}

.app-card-details h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.5rem;
  line-height: 1.35;
}

.app-card-details p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

.usp-number {
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--accent-blue);
  background: var(--accent-blue-light);
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  display: inline-block;
  margin-bottom: 0.85rem;
  width: fit-content;
}

/* ==========================================================================
   RESPONSIVE DESIGN & MOBILE OPTIMIZATIONS
   ========================================================================== */

/* --- Tablet Landscape (<= 1024px) --- */
@media (max-width: 1024px) {
  .usp-showcase-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

  .grid-2col {
    grid-template-columns: 1fr;
    gap: 2.75rem;
  }

  .footer-container {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }
}

/* --- Phablet & Tablet Portrait (<= 860px) --- */
@media (max-width: 860px) {
  .app-pictorial-section {
    padding: 4.5rem 0;
  }

  .pictorial-app-grid {
    grid-template-columns: 1fr;
    max-width: 460px;
    margin: 2.25rem auto 0 auto;
    gap: 2.25rem;
  }

  .app-phone-card.card-span-2 {
    grid-column: auto;
    max-width: 100%;
  }

  .dark-showcase-section {
    padding: 5rem 0;
  }

  .hardware-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .hardware-studio-card {
    max-width: 420px;
    margin: 0 auto;
  }
}

/* --- Standard Mobile (<= 768px) --- */
@media (max-width: 768px) {
  .desktop-br {
    display: none;
  }

  .section {
    padding: 4rem 0;
  }

  .desktop-only {
    display: none !important;
  }

  .hamburger-btn {
    display: flex;
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
  }

  /* Mobile Slide-in Drawer with Safe Area Insets */
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 85%;
    max-width: 320px;
    height: 100vh;
    height: 100dvh;
    background: #ffffff;
    flex-direction: column;
    align-items: flex-start;
    padding: 1.5rem;
    padding-top: max(1.5rem, env(safe-area-inset-top));
    padding-bottom: max(1.5rem, env(safe-area-inset-bottom));
    gap: 0.5rem;
    box-shadow: -10px 0 35px rgba(0, 0, 0, 0.15);
    z-index: 1100;
    transition: right 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    overflow-y: auto;
  }

  .nav-menu.active {
    right: 0;
  }

  .mobile-menu-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding-bottom: 1rem;
    margin-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-light);
  }

  .menu-close-btn {
    background: var(--bg-subtle);
    border: 1px solid var(--border-light);
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
    border-radius: 50%;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-main);
  }

  .nav-item {
    width: 100%;
    padding: 0.85rem 0.65rem;
    font-size: 1.05rem;
    font-weight: 600;
    min-height: 48px;
    display: flex;
    align-items: center;
    border-radius: var(--radius-sm);
  }

  .mobile-menu-bottom {
    display: block;
    width: 100%;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-light);
  }

  .mobile-menu-bottom .btn {
    width: 100%;
    min-height: 50px;
    justify-content: center;
  }

  .menu-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.45);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
    z-index: 990;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
  }

  .menu-backdrop.active {
    opacity: 1;
    visibility: visible;
  }

  /* Hero Section on Mobile */
  .hero-section {
    padding-top: 5.5rem;
    padding-bottom: 2.75rem;
    overflow: hidden;
  }

  .hero-container {
    grid-template-columns: 1fr;
    gap: 2.25rem;
    text-align: center;
  }

  .hero-content {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .hero-eyebrow {
    margin-bottom: 1rem;
  }

  .hero-heading {
    font-size: clamp(2rem, 7.5vw, 2.6rem);
    line-height: 1.18;
    margin-bottom: 1rem;
    letter-spacing: -0.025em;
  }

  .hero-desc {
    font-size: 1rem;
    line-height: 1.6;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 1.75rem;
    max-width: 520px;
  }

  .hero-actions {
    justify-content: center;
    flex-direction: column;
    width: 100%;
    max-width: 380px;
    margin: 0 auto 1.75rem auto;
    gap: 0.75rem;
  }

  .hero-actions .btn {
    width: 100%;
    min-height: 50px;
    justify-content: center;
    font-size: 0.98rem;
  }

  .hero-stats-strip {
    width: 100%;
    max-width: 420px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border-light);
    align-items: center;
  }

  .stat-divider {
    display: none;
  }

  .stat-block {
    text-align: center;
  }

  .stat-value {
    font-size: 0.95rem;
    font-weight: 800;
  }

  .stat-label {
    font-size: 0.7rem;
    line-height: 1.25;
  }

  .hero-visual-stage {
    min-height: auto;
    max-width: 330px;
    margin: 0 auto;
    padding-bottom: 1rem;
    overflow: hidden;
  }

  .hero-phone-wrap {
    max-width: 300px;
    width: 100%;
    margin: 0 auto;
  }

  .stage-ambient-glow {
    width: 280px;
    height: 280px;
    max-width: 100%;
  }

  .hero-metrics-container {
    margin-top: 1.75rem;
  }

  .hero-metrics-bar {
    grid-template-columns: 1fr;
    gap: 0.85rem;
    padding: 0;
    background: transparent;
    border: none;
    box-shadow: none;
  }

  .metric-item {
    padding: 1rem 1.15rem;
    background: #ffffff;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 16px rgba(15, 23, 42, 0.04);
    display: flex;
    align-items: flex-start;
    gap: 0.85rem;
    text-align: left;
  }

  .metric-num {
    font-size: 0.85rem;
    font-weight: 800;
    color: var(--accent-blue);
    background: var(--accent-blue-light);
    border: 1px solid var(--accent-blue-border);
    width: 30px;
    height: 30px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 2px;
  }

  .metric-text strong {
    display: block;
    font-size: 0.95rem;
    color: var(--text-main);
    margin-bottom: 0.2rem;
    line-height: 1.3;
  }

  .metric-text span {
    display: block;
    font-size: 0.84rem;
    color: var(--text-muted);
    line-height: 1.45;
  }

  /* Philosophy Section on Mobile */
  .philosophy-section {
    padding: 5rem 0;
  }

  .paradigm-comparison-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .comp-card {
    padding: 2rem 1.4rem;
    border-radius: 22px;
  }

  .comp-points-list {
    gap: 1.15rem;
  }

  .comp-point-item {
    padding: 0.95rem 0;
    gap: 1rem;
  }

  .point-tag-badge {
    font-size: 0.75rem;
    padding: 0.3rem 0.7rem;
    white-space: nowrap;
  }

  .point-text strong {
    font-size: 0.96rem;
  }

  .point-text p {
    font-size: 0.88rem;
    line-height: 1.55;
  }

  .paradigm-quote-banner {
    margin-top: 2.5rem;
    padding: 1.5rem 1.25rem;
    border-radius: var(--radius-lg);
  }

  .paradigm-quote-banner blockquote {
    font-size: 1.02rem;
    line-height: 1.6;
  }

  /* Core Intelligence Differentiators on Mobile */
  #differentiators {
    padding: 5rem 0;
  }

  .usp-showcase-grid {
    grid-template-columns: 1fr;
    gap: 1.75rem;
    margin-top: 2rem;
  }

  .usp-card {
    padding: 2.25rem 1.5rem;
    border-radius: 22px;
    background: #ffffff;
    box-shadow: 0 8px 30px rgba(15, 23, 42, 0.05);
  }

  .usp-card h3 {
    font-size: 1.22rem;
    margin-bottom: 0.65rem;
  }

  .usp-card p {
    font-size: 0.94rem;
    line-height: 1.65;
    margin-bottom: 1.25rem;
  }

  .usp-micro-demo {
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
  }

  /* Partnerships on Mobile */
  .partnerships-section {
    padding: 5rem 0;
    background-color: #ffffff;
  }

  .partnership-box {
    padding: 2.75rem 1.5rem;
    border-radius: 24px;
    margin: 1rem 0;
  }

  .partnership-actions {
    flex-direction: column;
    gap: 1rem;
    width: 100%;
    max-width: 380px;
    margin: 1.75rem auto 0 auto;
  }

  .partnership-actions .btn {
    width: 100%;
    min-height: 50px;
    justify-content: center;
  }

  /* Final CTA & Footer on Mobile */
  .final-cta-section {
    padding: 5.5rem 0 4.5rem 0;
    text-align: center;
  }

  .final-cta-buttons {
    flex-direction: column;
    gap: 1rem;
    width: 100%;
    max-width: 380px;
    margin: 1.75rem auto 0 auto;
  }

  .final-cta-buttons .btn {
    width: 100%;
    min-height: 50px;
    justify-content: center;
  }

  .footer {
    padding: 4.5rem 0 2.5rem 0;
  }

  .footer-container {
    grid-template-columns: 1fr;
    gap: 2.75rem;
    margin-bottom: 2.5rem;
  }

  .footer-links-col h4 {
    font-size: 1.05rem;
    margin-bottom: 1.15rem;
    color: var(--text-main);
  }

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
    padding-top: 2rem;
  }

  .footer-links a,
  .footer-nav a,
  .footer-links-col a {
    padding: 0.45rem 0;
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    line-height: 1.4;
    font-size: 0.95rem;
  }

  /* Tap feedback */
  .btn:active, .app-tab-btn:active {
    transform: scale(0.98);
  }
}

/* --- Smartphones & Small Screens (<= 480px, including iPhone SE 375px & 320px) --- */
@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }

  .section {
    padding: 3.25rem 0;
  }

  .section-intro {
    margin-bottom: 2.25rem;
  }

  .section-kicker {
    font-size: 0.75rem;
    padding: 0.3rem 0.8rem;
  }

  .section-heading {
    font-size: clamp(1.75rem, 6.8vw, 2.15rem);
    line-height: 1.2;
  }

  .section-desc {
    font-size: 0.95rem;
    line-height: 1.55;
  }

  /* Hero adjustments for small phones */
  .hero-section {
    padding-top: 5rem;
    padding-bottom: 2.25rem;
  }

  .hero-heading {
    font-size: clamp(1.85rem, 8vw, 2.25rem);
  }

  .hero-badge {
    font-size: 0.75rem;
    padding: 0.35rem 0.85rem;
  }

  .hero-desc {
    font-size: 0.9375rem;
    line-height: 1.55;
    margin-bottom: 1.25rem;
  }

  .hero-actions {
    max-width: 100%;
  }

  .hero-phone-wrap {
    max-width: 270px;
  }

  .hero-visual-stage {
    max-width: 290px;
  }

  .stat-value {
    font-size: 0.88rem;
  }

  .stat-label {
    font-size: 0.65rem;
  }

  /* App showcase adjustments for small phones */
  .pictorial-app-grid {
    max-width: 100%;
    gap: 1.75rem;
  }

  .app-phone-card {
    padding: 1.25rem 0.85rem;
    border-radius: 18px;
    text-align: center;
  }

  .phone-frame-wrap {
    max-width: 240px;
    margin-bottom: 1rem;
  }

  .app-card-pill {
    font-size: 0.7rem;
    padding: 0.25rem 0.75rem;
    margin: 0 auto 0.5rem auto;
  }

  .app-card-details h3 {
    font-size: 1.1rem;
    margin-bottom: 0.35rem;
  }

  .app-card-details p {
    font-size: 0.86rem;
    line-height: 1.5;
  }

  /* Hardware section adjustments for small phones */
  .dark-showcase-section {
    padding: 4rem 0;
  }

  .heading-white {
    font-size: clamp(1.75rem, 6.8vw, 2.15rem);
  }

  .text-white-muted {
    font-size: 0.92rem;
    line-height: 1.55;
    margin-bottom: 1.25rem;
  }

  .hardware-spec-list {
    gap: 0.75rem;
    margin: 1.25rem 0 1.5rem 0;
  }

  .hw-spec-item {
    padding: 0.8rem 0.85rem;
    gap: 0.75rem;
    border-radius: var(--radius-md);
  }

  .hw-spec-num {
    width: 26px;
    height: 26px;
    font-size: 0.75rem;
    border-radius: 6px;
  }

  .hw-spec-item strong {
    font-size: 0.9rem;
    margin-bottom: 0.15rem;
  }

  .hw-spec-item span {
    font-size: 0.8rem;
    line-height: 1.4;
  }

  .hardware-studio-card {
    padding: 1.35rem 0.85rem 1rem 0.85rem;
    border-radius: 18px;
    max-width: 100%;
  }

  .sos-hardware-img {
    max-width: 100%;
  }

  .hardware-studio-caption {
    font-size: 0.7rem;
    flex-wrap: wrap;
    text-align: center;
  }

  .sos-callout-badge {
    font-size: 0.7rem;
    padding: 0.45rem 0.75rem;
    flex-wrap: wrap;
    text-align: center;
    justify-content: center;
  }

  /* Philosophy & Differentiators for small phones */
  .philosophy-section,
  #differentiators,
  .partnerships-section {
    padding: 4.25rem 0;
  }

  .paradigm-comparison-container {
    gap: 1.75rem;
  }

  .comp-card,
  .usp-card {
    padding: 1.75rem 1.2rem;
    border-radius: 20px;
  }

  .comp-card h3,
  .usp-card h3 {
    font-size: 1.15rem;
  }

  .comp-card p,
  .usp-card p {
    font-size: 0.9rem;
    line-height: 1.6;
  }

  .usp-showcase-grid {
    gap: 1.5rem;
  }

  /* Partnerships */
  .partnership-box {
    padding: 2.25rem 1.25rem;
    border-radius: 20px;
  }
}

/* --- Ultra-Compact Devices (<= 360px, e.g. iPhone SE 1st Gen, Galaxy Fold Cover) --- */
@media (max-width: 360px) {
  .container {
    padding: 0 0.75rem;
  }

  .hero-heading {
    font-size: 1.75rem;
  }

  .hero-phone-wrap {
    max-width: 230px;
  }

  .phone-frame-wrap {
    max-width: 215px;
  }

  .stat-value {
    font-size: 0.82rem;
  }

  .stat-label {
    font-size: 0.6rem;
  }

  .btn {
    font-size: 0.88rem;
    padding: 0.75rem 1rem;
  }
}


/* ==========================================================================
   RESERVATION CUTOUT DIALOG (MODAL)
   ========================================================================== */
#so-dialog {
  position: fixed;
  inset: 0;
  margin: auto;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 0;
  width: min(92vw, 480px);
  max-height: 90vh;
  font-family: var(--font-body);
  color: var(--text-main);
  background: #ffffff;
  box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.25);
  overflow: hidden;
  z-index: 2000;
}
#so-dialog::backdrop {
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
#so-dialog .so-body {
  padding: 2rem 2rem 2.25rem 2rem;
  overflow-y: auto;
  max-height: 90vh;
  box-sizing: border-box;
}
#so-dialog h2 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  margin: 0 0 4px 0;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.02em;
}
#so-dialog .so-note {
  margin: 0 0 1.25rem 0;
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
}
#so-dialog label {
  display: block;
  margin: 0.85rem 0 0.35rem 0;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-main);
}
#so-dialog input:not([type=checkbox]),
#so-dialog select {
  width: 100%;
  box-sizing: border-box;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  background: var(--bg-subtle);
  font: inherit;
  font-size: 16px; /* prevent iOS zoom */
  color: var(--text-main);
  transition: border-color 0.15s, background-color 0.15s;
  min-height: 48px;
}
#so-dialog input:focus,
#so-dialog select:focus,
#so-dialog input:focus-visible,
#so-dialog select:focus-visible {
  outline: none;
  border-color: var(--accent-blue);
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(97, 191, 227, 0.25);
}
#so-dialog .so-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}
#so-dialog button {
  font: inherit;
  cursor: pointer;
}
#so-dialog .so-pay {
  width: 100%;
  margin-top: 1.35rem;
  padding: 0.85rem 1.25rem;
  background: var(--text-main);
  color: #ffffff;
  border: 0;
  border-radius: var(--radius-pill);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  transition: background 0.15s, transform 0.1s;
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}
#so-dialog .so-pay:hover {
  background: #1e293b;
  transform: translateY(-1px);
}
#so-dialog .so-pay:disabled {
  opacity: 0.6;
  cursor: wait;
  transform: none;
}
#so-dialog .so-close {
  float: right;
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: 50%;
  width: 32px;
  height: 32px;
  font-size: 1.2rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
#so-dialog .so-close:hover {
  background: #e2e8f0;
  color: var(--text-main);
}
#so-dialog .so-error {
  color: #b91c1c;
  font-size: 0.84rem;
  margin-top: 0.75rem;
  min-height: 1.2em;
  background: #fef2f2;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid #fecaca;
  display: none;
}
#so-dialog .so-error:not(:empty) {
  display: block;
}
.so-hp {
  position: absolute;
  left: -9999px;
  height: 0;
  overflow: hidden;
}
@media (max-width: 768px) {
  #so-dialog {
    width: 95vw;
    max-height: 92vh;
  }
  #so-dialog .so-body {
    padding: 1.5rem 1.25rem 1.75rem 1.25rem;
  }
  #so-dialog .so-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
}

/* ==========================================================================
   RESERVATION CUTOUT DIALOG (MODAL)
   ========================================================================== */
#so-dialog {
  position: fixed;
  inset: 0;
  margin: auto;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 0;
  width: min(92vw, 480px);
  max-height: 90vh;
  font-family: var(--font-body);
  color: var(--text-main);
  background: #ffffff;
  box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.25);
  overflow: hidden;
  z-index: 2000;
}
#so-dialog::backdrop {
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
#so-dialog .so-body {
  padding: 2rem 2rem 2.25rem 2rem;
  overflow-y: auto;
  max-height: 90vh;
  box-sizing: border-box;
}
#so-dialog h2 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  margin: 0 0 4px 0;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.02em;
}
#so-dialog .so-note {
  margin: 0 0 1.25rem 0;
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
}
#so-dialog label {
  display: block;
  margin: 0.85rem 0 0.35rem 0;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-main);
}
#so-dialog input:not([type=checkbox]),
#so-dialog select {
  width: 100%;
  box-sizing: border-box;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  background: var(--bg-subtle);
  font: inherit;
  font-size: 16px;
  color: var(--text-main);
  transition: border-color 0.15s, background-color 0.15s;
  min-height: 48px;
}
#so-dialog input:focus,
#so-dialog select:focus,
#so-dialog input:focus-visible,
#so-dialog select:focus-visible {
  outline: none;
  border-color: var(--accent-blue);
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(97, 191, 227, 0.25);
}
#so-dialog .so-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}
#so-dialog button {
  font: inherit;
  cursor: pointer;
}
#so-dialog .so-pay {
  width: 100%;
  margin-top: 1.35rem;
  padding: 0.85rem 1.25rem;
  background: var(--text-main);
  color: #ffffff;
  border: 0;
  border-radius: var(--radius-pill);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  transition: background 0.15s, transform 0.1s;
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}
#so-dialog .so-pay:hover {
  background: #1e293b;
  transform: translateY(-1px);
}
#so-dialog .so-pay:disabled {
  opacity: 0.6;
  cursor: wait;
  transform: none;
}
#so-dialog .so-close {
  float: right;
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: 50%;
  width: 32px;
  height: 32px;
  font-size: 1.2rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
#so-dialog .so-close:hover {
  background: #e2e8f0;
  color: var(--text-main);
}
#so-dialog .so-error {
  color: #b91c1c;
  font-size: 0.84rem;
  margin-top: 0.75rem;
  min-height: 1.2em;
  background: #fef2f2;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid #fecaca;
  display: none;
}
#so-dialog .so-error:not(:empty) {
  display: block;
}
.so-hp {
  position: absolute;
  left: -9999px;
  height: 0;
  overflow: hidden;
}
@media (max-width: 768px) {
  #so-dialog {
    width: 95vw;
    max-height: 92vh;
  }
  #so-dialog .so-body {
    padding: 1.5rem 1.25rem 1.75rem 1.25rem;
  }
  #so-dialog .so-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
}