:root {
  --bg-deep: #030712;
  --bg-surface: #111827;
  --bg-glass: rgba(17, 24, 39, 0.6);
  --ink-primary: #ffffff;
  --ink-secondary: #9ca3af;
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-cyan: #06b6d4;
  --accent-teal: #0d9488;
  --grid-line: rgba(255, 255, 255, 0.05);

  --font-sans: 'Inter', -apple-system, sans-serif;
  --font-display: 'Space Grotesk', -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--ink-primary);
  background-color: var(--bg-deep);
  line-height: 1.6;
  overflow-x: hidden;
  /* Premium dot matrix background + noise texture */
  background-image:
    url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E"),
    radial-gradient(var(--grid-line) 1px, transparent 1px);
  background-size: 150px 150px, 32px 32px;
  background-attachment: fixed;
  background-blend-mode: overlay, normal;
  background-repeat: repeat;
  opacity: 0.99;
  transition: background-color 0.25s ease, color 0.25s ease;
}

body[data-theme="light"] {
  --bg-deep: #f7f9fc;
  --bg-surface: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.76);
  --ink-primary: #132a4b;
  --ink-secondary: #4d6488;
  --accent-blue: #2b7cff;
  --accent-purple: #7c5bff;
  --accent-cyan: #11aecd;
  --accent-teal: #0d9488;
  --grid-line: rgba(19, 42, 75, 0.04);
  background-image:
    radial-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(180deg, rgba(247, 249, 252, 1), rgba(240, 245, 255, 0.98));
  background-size: 28px 28px, 100% 100%;
  background-attachment: fixed;
  background-blend-mode: normal;
}

/* Typography Defaults */
h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

p {
  color: var(--ink-secondary);
}

a {
  color: inherit;
  text-decoration: none;
}

:focus {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -44px;
  z-index: 3000;
  background: #ffffff;
  color: #0e2c52;
  padding: 0.5rem 0.8rem;
  border-radius: 8px;
  font-weight: 700;
  border: 1px solid #c8daf7;
}

.skip-link:focus-visible {
  top: 12px;
}

.text-gradient {
  background: linear-gradient(90deg, var(--accent-teal), var(--accent-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.text-subtle {
  color: var(--ink-secondary);
}

.text-xs {
  font-size: 0.75rem;
}

.text-sm {
  font-size: 0.875rem;
}

.text-xl {
  font-size: 1.25rem;
}

/* Utilities */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 10;
}

.section {
  padding: 6rem 0;
  position: relative;
}

.pt-0 {
  padding-top: 0;
}

.pb-8 {
  padding-bottom: 8rem;
}

.pt-4 {
  padding-top: 2rem;
}

.mb-2 {
  margin-bottom: 0.5rem;
}

.mb-3 {
  margin-bottom: 1rem;
}

.mb-4 {
  margin-bottom: 1.5rem;
}

.mb-5 {
  margin-bottom: 3rem;
}

.mb-6 {
  margin-bottom: 4rem;
}

.mt-3 {
  margin-top: 1rem;
}

.mt-4 {
  margin-top: 1.5rem;
}

.mt-5 {
  margin-top: 3rem;
}

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

.max-w-lg {
  max-width: 800px;
}

.max-w-md {
  max-width: 600px;
}

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

.flex-spread {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.flex-wrap {
  flex-wrap: wrap;
}

.gap-4 {
  gap: 1rem;
}

.gap-6 {
  gap: 3rem;
}

.shrink-0 {
  flex-shrink: 0;
}

.block {
  display: block;
}

.uppercase {
  text-transform: uppercase;
}

.tracking-wide {
  letter-spacing: 0.05em;
}

.hover-white {
  transition: color 0.2s;
}

.hover-white:hover {
  color: #fff;
}

.bg-deep {
  background: var(--bg-deep);
}

.border-top-subtle {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* Buttons & Badges */
button {
  font-family: var(--font-sans);
  cursor: pointer;
  border: none;
  background: none;
  outline: none;
}

.btn-primary {
  background: var(--ink-primary);
  color: var(--bg-deep);
  padding: 0.6rem 1.25rem;
  border-radius: 4px;
  font-weight: 600;
  transition: all 0.3s ease;
}

.btn-primary:hover {
  background: var(--accent-teal);
  box-shadow: 0 0 20px rgba(13, 148, 136, 0.35);
}

.btn-primary.lg {
  padding: 0.8rem 1.5rem;
  font-size: 1.1rem;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: var(--ink-primary);
  padding: 0.6rem 1.25rem;
  border-radius: 4px;
  font-weight: 500;
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.2);
}

.btn-secondary.lg {
  padding: 0.8rem 1.5rem;
  font-size: 1.1rem;
}

.btn-outline.white {
  background: transparent;
  color: #fff;
  border: 1px solid #fff;
  padding: 0.6rem 1.25rem;
  border-radius: 4px;
  transition: all 0.3s ease;
}

.btn-outline.white:hover {
  background: #fff;
  color: #000;
}

.badge-pill {
  display: inline-block;
  padding: 0.4rem 1rem;
  border-radius: 100px;
  background: rgba(59, 130, 246, 0.1);
  /* blue tint */
  color: var(--accent-blue);
  font-size: 0.85rem;
  border: 1px solid rgba(59, 130, 246, 0.2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(3, 7, 18, 0.66);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: background 0.3s ease, border-bottom 0.3s ease;
}

.site-header.scrolled {
  background: rgba(3, 7, 18, 0.92);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

body[data-theme="light"] .site-header {
  background: rgba(245, 248, 255, 0.95);
  border-bottom: 1px solid #d7e3f7;
}

body[data-theme="light"] .site-header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  border-bottom: 1px solid #cfddf5;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: 84px;
}

.brand-cluster {
  display: flex;
  align-items: center;
  gap: 0.38rem;
}

.brand {
  color: var(--ink-primary);
  display: inline-flex;
  align-items: center;
  line-height: 1;
}

.brand-wordmark {
  display: inline-flex;
  align-items: baseline;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.5vw, 1.92rem);
  font-weight: 700;
  letter-spacing: -0.045em;
  text-transform: lowercase;
}

.brand-core {
  color: var(--ink-primary);
}

.brand-tech {
  margin-left: -0.02em;
  color: var(--accent-blue);
  font-weight: 600;
}

.brand:hover .brand-tech {
  color: var(--accent-cyan);
}

.vissan-logo .brand-wordmark {
  font-size: 1.64rem;
}

.footer-brand .brand-core {
  color: #ffffff;
}

.footer-brand .brand-tech {
  color: #72c3ff;
}

.footer-contact-lines {
  max-width: 420px;
  line-height: 1.75;
}

.footer-contact-lines a {
  color: #d2e7ff;
  text-decoration: none;
  border-bottom: 1px dotted rgba(210, 231, 255, 0.4);
}

.footer-contact-lines a:hover {
  color: #ffffff;
  border-bottom-color: rgba(255, 255, 255, 0.7);
}

body[data-theme="light"] .brand-tech {
  color: #1872e6;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.main-nav {
  display: none;
}

@media (min-width: 768px) {
  .main-nav {
    display: flex;
    gap: 2rem;
  }
}

.nav-link {
  font-size: 0.95rem;
  color: var(--ink-secondary);
  transition: color 0.3s, opacity 0.3s;
}

.nav-link:hover {
  color: var(--ink-primary);
}

.nav-link.is-active {
  color: var(--ink-primary);
  text-decoration: underline;
  text-underline-offset: 0.35em;
  text-decoration-thickness: 2px;
}

.theme-toggle,
.menu-toggle {
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: var(--ink-primary);
  background: rgba(255, 255, 255, 0.05);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.48rem 0.7rem;
  border-radius: 8px;
}

.theme-toggle {
  width: 30px;
  height: 30px;
  padding: 0;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.86);
  background: transparent;
  border-color: transparent;
  line-height: 1;
  opacity: 0.78;
}

.theme-toggle:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.16);
  opacity: 1;
}

.theme-icon {
  width: 14px;
  height: 14px;
}

.menu-toggle {
  display: none;
}

.mobile-nav {
  display: none;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(6, 12, 26, 0.96);
  padding: 0.8rem 5%;
  gap: 0.7rem;
}

.mobile-nav .nav-link {
  display: block;
  font-size: 0.95rem;
  padding: 0.35rem 0;
}

.mobile-nav.is-open {
  display: grid;
}

body[data-theme="light"] .theme-toggle,
body[data-theme="light"] .menu-toggle {
  border-color: #c6d8f4;
  background: #ffffff;
  color: #143156;
}

body[data-theme="light"] .theme-toggle {
  background: transparent;
  border-color: transparent;
  color: #17355f;
  opacity: 0.72;
}

body[data-theme="light"] .theme-toggle:hover {
  background: rgba(20, 49, 86, 0.06);
  border-color: rgba(20, 49, 86, 0.14);
  opacity: 1;
}

body[data-theme="light"] .mobile-nav {
  border-top: 1px solid #dbe6f8;
  background: rgba(251, 253, 255, 0.98);
}

body[data-theme="light"] .skip-link {
  background: #ffffff;
  color: #14325b;
}

/* ==========================================================================
   Hybrid Hero
   ========================================================================== */
.hero {
  padding-top: 8.8rem;
  padding-bottom: 4rem;
  min-height: 84vh;
  position: relative;
  display: flex;
  align-items: flex-start;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  align-items: center;
  gap: 2.2rem;
}

.hero-title {
  font-size: clamp(3rem, 5vw, 4.5rem);
  margin-bottom: 1.5rem;
}

.hero-lead {
  font-size: 1.1rem;
  margin-bottom: 2.5rem;
  max-width: 500px;
}

.page-intro {
  max-width: 760px;
  font-size: 1.02rem;
  color: var(--ink-secondary);
  margin-top: 0.8rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.proof-chips {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.proof-chips span {
  font-size: 0.75rem;
  color: var(--ink-primary);
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.04);
  border-radius: 999px;
  padding: 0.35rem 0.7rem;
}

.feature-engagement {
  max-width: 520px;
  border-left: 2px solid var(--accent-cyan);
  padding-left: 0.75rem;
}

.feature-engagement strong {
  display: block;
  margin-bottom: 0.25rem;
}

/* Background Depth Orbs */
.hero-bg-orbs {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.orb {
  position: absolute;
  border-radius: 50%;
  opacity: 0.6;
}

.orb-primary {
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.15) 0%, transparent 60%);
  top: -20%;
  right: -20%;
  animation: floatOrb 20s infinite ease-in-out alternate;
}

.orb-secondary {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, transparent 60%);
  bottom: -10%;
  left: -10%;
  animation: floatOrb 25s infinite ease-in-out alternate-reverse;
}

@keyframes floatOrb {
  0% {
    transform: translate(0, 0);
  }

  100% {
    transform: translate(-50px, 50px);
  }
}

/* Isometric Hero Visual */
.hero-visual {
  position: relative;
  width: 100%;
  min-height: 440px;
  margin-top: 2rem;
  align-self: center;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 0.8rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.02);
  padding: 0.85rem;
}

.capability-mini-cards {
  position: static;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.5rem;
}

.capability-mini-cards article {
  background: rgba(3, 7, 18, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  padding: 0.55rem;
}

.capability-mini-cards h4 {
  font-size: 0.8rem;
  margin-bottom: 0.15rem;
}

.capability-mini-cards p {
  font-size: 0.74rem;
}

.iso-platform {
  position: relative;
  width: 340px;
  height: 340px;
  margin: 0 auto;
  transform: rotateX(60deg) rotateZ(-45deg);
  transform-style: preserve-3d;
}

.hero-bottom-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.5rem;
}

.hero-bottom-metrics span {
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
  padding: 0.45rem 0.55rem;
  font-size: 0.73rem;
  color: var(--ink-secondary);
}

.iso-layer {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 20px;
}

.layer-1 {
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.3);
  transform: translateZ(-50px);
  box-shadow: 0 0 40px rgba(59, 130, 246, 0.2);
}

.layer-2 {
  /* Glass pane */
  background: rgba(255, 255, 255, 0.02);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transform: translateZ(50px);
}

.pulse-node {
  position: absolute;
  width: 20px;
  height: 20px;
  background: var(--accent-cyan);
  border-radius: 50%;
  top: 60%;
  left: 40%;
  box-shadow: 0 0 20px var(--accent-cyan);
  animation: nodePulse 2s infinite;
}

.pulse-node.small {
  width: 10px;
  height: 10px;
  background: var(--accent-purple);
  box-shadow: 0 0 15px var(--accent-purple);
}

@keyframes nodePulse {
  0% {
    transform: scale(1);
    opacity: 1;
  }

  50% {
    transform: scale(1.5);
    opacity: 0.5;
  }

  100% {
    transform: scale(1);
    opacity: 1;
  }
}

/* Client Ribbon */
.client-ribbon {
  padding: 3rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  background: rgba(0, 0, 0, 0.2);
}

.logo-marquee {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  padding: 0.65rem 0;
  background: rgba(255, 255, 255, 0.03);
}

.logo-track {
  display: flex;
  gap: 2rem;
  min-width: max-content;
  animation: marquee 26s linear infinite;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--ink-secondary);
  letter-spacing: 0.08em;
}

.logo-track span {
  white-space: nowrap;
}

.logo-marquee:hover .logo-track {
  animation-play-state: paused;
}

@keyframes marquee {
  from {
    transform: translateX(0);
  }

  to {
    transform: translateX(-50%);
  }
}

.process-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
}

.process-strip article {
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.03);
  padding: 1rem;
}

.process-strip h3 {
  font-size: 1rem;
  margin-bottom: 0.4rem;
}

/* ==========================================================================
   Bento Grid / Enterprise Services Restore
   ========================================================================== */
.bento-section {
  padding: 6rem 0;
}

.section-header .section-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: minmax(280px, auto);
  gap: 1.5rem;
}

.glass-card {
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  padding: 2.5rem;
  transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(800px circle at var(--mouse-x) var(--mouse-y), rgba(255, 255, 255, 0.06), transparent 40%);
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
  z-index: 0;
}

.glass-card:hover::before {
  opacity: 1;
}

.glass-card>* {
  position: relative;
  z-index: 1;
}

.glass-card:hover {
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-5px);
  background: rgba(17, 24, 39, 0.8);
}

.bento-span-2 {
  grid-column: span 2;
}

.bento-wide {
  grid-column: span 3;
}

.bento-darker {
  background: rgba(0, 0, 0, 0.4);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}

.gradient-blue {
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
}

.gradient-purple {
  background: linear-gradient(135deg, #8b5cf6, #5b21b6);
}

.gradient-cyan {
  background: linear-gradient(135deg, #06b6d4, #0369a1);
}

.bento-card h3 {
  font-size: 1.4rem;
  margin-bottom: 0.8rem;
}

.service-tag {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-cyan);
  margin-bottom: 0.45rem;
}

.mock-data-flow {
  display: flex;
  align-items: center;
  background: rgba(0, 0, 0, 0.5);
  padding: 1rem;
  border-radius: 6px;
  font-family: monospace;
  font-size: 0.9rem;
  justify-content: space-between;
}

.mock-data-flow .node {
  background: rgba(255, 255, 255, 0.05);
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
}

.mock-data-flow .node.highlight {
  background: rgba(59, 130, 246, 0.2);
  color: var(--accent-blue);
  border: 1px solid rgba(59, 130, 246, 0.4);
}

.mock-data-flow .flow-line {
  height: 2px;
  flex-grow: 1;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.3));
  margin: 0 0.5rem;
}

.feature-list {
  list-style: none;
}

.grid-cols-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.feature-list li {
  position: relative;
  padding-left: 1.5rem;
  font-size: 0.9rem;
  color: var(--ink-secondary);
}

.feature-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--accent-blue);
}

/* ==========================================================================
   Industries / Radar Visual
   ========================================================================== */
.dual-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.industry-accordion {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.ind-item {
  padding: 1.5rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  cursor: pointer;
  opacity: 0.5;
  transition: opacity 0.3s ease;
}

.ind-item h4 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
  color: #fff;
}

.ind-item p {
  display: none;
  font-size: 0.95rem;
  padding-right: 2rem;
}

.ind-item.active {
  opacity: 1;
}

.ind-item.active p {
  display: block;
}

.radar-visual {
  width: 100%;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.radar {
  width: 300px;
  height: 300px;
  border-radius: 50%;
  position: relative;
  background: radial-gradient(circle, rgba(17, 24, 39, 0) 0%, rgba(6, 182, 212, 0.05) 100%);
  border: 1px solid rgba(6, 182, 212, 0.2);
  overflow: hidden;
}

.radar .ring {
  position: absolute;
  border: 1px solid rgba(6, 182, 212, 0.1);
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.radar .ring:nth-child(2) {
  width: 66%;
  height: 66%;
}

.radar .ring:nth-child(3) {
  width: 33%;
  height: 33%;
}

.radar .sweep {
  position: absolute;
  width: 50%;
  height: 50%;
  top: 0;
  left: 50%;
  transform-origin: bottom left;
  background: linear-gradient(45deg, rgba(6, 182, 212, 0) 0%, rgba(6, 182, 212, 0.3) 100%);
  animation: radarSweep 4s linear infinite;
}

@keyframes radarSweep {
  100% {
    transform: rotate(360deg);
  }
}

.radar .blip {
  position: absolute;
  width: 6px;
  height: 6px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 0 10px #fff;
  opacity: 0;
  animation: blipFade 4s infinite;
}

@keyframes blipFade {
  0% {
    opacity: 1;
    transform: scale(1);
  }

  20% {
    opacity: 0;
    transform: scale(2);
  }

  100% {
    opacity: 0;
  }
}

/* ==========================================================================
   Stats / Value
   ========================================================================== */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.case-kicker {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-cyan);
  margin-bottom: 0.5rem;
}

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

.border-top-blue {
  border-top: 3px solid var(--accent-blue);
}

.border-top-purple {
  border-top: 3px solid var(--accent-purple);
}

.border-top-cyan {
  border-top: 3px solid var(--accent-cyan);
}

.stat-val {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--ink-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ==========================================================================
   CTA / Form
   ========================================================================== */
.action-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.action-card {
  padding: 3rem;
  border-radius: 12px;
}

.dark-glass {
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.blue-glass {
  background: rgba(30, 58, 138, 0.2);
  /* deep blue tint */
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(59, 130, 246, 0.2);
}

.inline-link {
  color: var(--ink-primary);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.inline-link span {
  transition: transform 0.3s;
}

.inline-link:hover span {
  transform: translateX(5px);
}

.contact-inline {
  font-size: 0.84rem;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.05);
  border-radius: 10px;
  padding: 0.65rem 0.75rem;
}

.contact-inline a {
  color: #cfe7ff;
  text-decoration: none;
  border-bottom: 1px dotted rgba(207, 231, 255, 0.5);
}

.contact-inline a:hover {
  color: #ffffff;
  border-bottom-color: rgba(255, 255, 255, 0.7);
}

.minimal-form .input-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
}

.minimal-form input,
.minimal-form select,
.minimal-form textarea {
  width: 100%;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0.8rem 1rem;
  border-radius: 8px;
  color: #fff;
  font-size: 0.95rem;
  outline: none;
  font-family: inherit;
}

.minimal-form input:focus,
.minimal-form select:focus,
.minimal-form textarea:focus {
  border-color: var(--accent-blue);
}

.minimal-form textarea {
  resize: vertical;
}

.sticky-cta {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 1200;
  background: linear-gradient(135deg, var(--accent-teal), var(--accent-blue));
  color: #fff;
  font-weight: 700;
  border-radius: 999px;
  padding: 0.7rem 1rem;
  box-shadow: 0 10px 26px rgba(13, 148, 136, 0.3);
}

body[data-theme="light"] .dark-section,
body[data-theme="light"] .bg-deep {
  background: transparent;
}

body[data-theme="light"] .glass-card,
body[data-theme="light"] .dark-glass,
body[data-theme="light"] .blue-glass {
  background: var(--bg-glass);
  border-color: rgba(19, 42, 75, 0.12);
}

body[data-theme="light"] .client-ribbon {
  background: rgba(255, 255, 255, 0.72);
  border-color: rgba(19, 42, 75, 0.08);
}

body[data-theme="light"] .logo-marquee {
  border-color: rgba(19, 42, 75, 0.12);
  background: rgba(255, 255, 255, 0.9);
}

body[data-theme="light"] .process-strip article,
body[data-theme="light"] .capability-mini-cards article {
  border-color: rgba(19, 42, 75, 0.12);
  background: rgba(255, 255, 255, 0.82);
}

body[data-theme="light"] .hero-visual {
  border-color: rgba(19, 42, 75, 0.14);
  background: rgba(255, 255, 255, 0.88);
}

body[data-theme="light"] .hero-bottom-metrics span {
  border-color: rgba(19, 42, 75, 0.14);
  background: rgba(255, 255, 255, 0.88);
}

body[data-theme="light"] .mock-data-flow {
  background: rgba(245, 248, 255, 0.9);
  border: 1px solid rgba(19, 42, 75, 0.1);
}

body[data-theme="light"] .mock-data-flow .node {
  background: rgba(255, 255, 255, 0.95);
  color: var(--ink-secondary);
  border: 1px solid rgba(19, 42, 75, 0.1);
}

body[data-theme="light"] .mock-data-flow .node.highlight {
  background: var(--accent-blue);
  color: #ffffff;
  border-color: rgba(43, 124, 255, 0.8);
}

body[data-theme="light"] .mock-data-flow .flow-line {
  background: linear-gradient(90deg, rgba(19, 42, 75, 0.1), rgba(19, 42, 75, 0.2));
}

body[data-theme="light"] .btn-primary {
  background: var(--accent-blue);
  color: #ffffff;
}

body[data-theme="light"] .btn-primary:hover {
  background: #1f6be6;
  box-shadow: 0 0 20px rgba(31, 107, 230, 0.25);
}

body[data-theme="light"] .btn-secondary {
  background: #ffffff;
  border-color: #cbdbf8;
  color: var(--ink-primary);
}

body[data-theme="light"] .minimal-form input {
  background: #ffffff;
  color: var(--ink-primary);
  border-color: #c9daf7;
}

body[data-theme="light"] .minimal-form select,
body[data-theme="light"] .minimal-form textarea {
  background: #ffffff;
  color: var(--ink-primary);
  border-color: #c9daf7;
}

body[data-theme="light"] .contact-inline {
  color: #2b476d;
  border-color: rgba(19, 42, 75, 0.16);
  background: rgba(255, 255, 255, 0.92);
}

body[data-theme="light"] .contact-inline a {
  color: #1f64c7;
  border-bottom-color: rgba(31, 100, 199, 0.38);
}

body[data-theme="light"] .contact-inline a:hover {
  color: #154991;
  border-bottom-color: rgba(21, 73, 145, 0.58);
}

body[data-theme="light"] .ind-item h4 {
  color: var(--ink-primary);
}

body[data-theme="light"] .site-footer {
  background: rgba(255, 255, 255, 0.96);
  border-top: 1.5px solid #b8cceb;
  box-shadow: inset 0 1px 0 rgba(19, 42, 75, 0.05);
}

body[data-theme="light"] .site-footer .text-subtle,
body[data-theme="light"] .site-footer .hover-white {
  color: #4b6386;
}

body[data-theme="light"] .site-footer .hover-white:hover {
  color: #16345f;
}

body[data-theme="light"] .border-top-subtle {
  border-top: 1px solid rgba(19, 42, 75, 0.12);
}

body[data-theme="light"] .site-footer .brand-core {
  color: #1a365f;
}

body[data-theme="light"] .site-footer .brand-tech {
  color: #1e76ea;
}

body[data-theme="light"] .footer-contact-lines a {
  color: #1f64c7;
  border-bottom-color: rgba(31, 100, 199, 0.35);
}

body[data-theme="light"] .footer-contact-lines a:hover {
  color: #154991;
  border-bottom-color: rgba(21, 73, 145, 0.55);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer-layout {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2rem;
}

.site-footer {
  padding-top: 3rem;
  padding-bottom: 2.5rem;
}

.site-footer.pb-4 {
  padding-bottom: 2.5rem;
}

.site-footer .footer-layout {
  align-items: start;
  margin-bottom: 2rem;
}

.site-footer .link-col {
  padding-top: 0.2rem;
}

@media (max-width: 768px) {
  .site-footer {
    padding-top: 2.2rem;
    padding-bottom: 2rem;
  }

  .site-footer .footer-layout {
    margin-bottom: 1.25rem;
    gap: 1.2rem;
  }

  .brand-wordmark {
    font-size: 1.36rem;
    letter-spacing: -0.04em;
  }

  .vissan-logo .brand-wordmark {
    font-size: 1.44rem;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .main-nav {
    display: none !important;
  }

  .hero-grid,
  .bento-grid,
  .dual-grid,
  .stat-grid,
  .footer-layout,
  .case-grid,
  .process-strip {
    grid-template-columns: 1fr;
  }

  .bento-span-2,
  .bento-wide {
    grid-column: span 1;
  }

  .right-align {
    text-align: left;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero {
    padding-top: 6rem;
    min-height: auto;
  }

  .minimal-form .input-grid {
    grid-template-columns: 1fr;
  }

  .capability-mini-cards {
    position: static;
    margin-top: 0;
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: auto;
    margin-top: 0;
  }

  .iso-platform {
    width: 300px;
    height: 300px;
  }

  .hero-bottom-metrics {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Animations
   ========================================================================== */
.reveal-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

.reveal-fade {
  opacity: 0;
  transition: opacity 1s ease-out;
}

.reveal-fade.active {
  opacity: 1;
}

.delay-1 {
  transition-delay: 0.1s;
}

.delay-2 {
  transition-delay: 0.2s;
}

.delay-3 {
  transition-delay: 0.3s;
}

/* Keep cursor glow */
#cursor-glow {
  position: fixed;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.05) 0%, transparent 60%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  mix-blend-mode: screen;
  transition: width 0.3s, height 0.3s;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ========================================================================== 
   V2 Polish Overrides (Intentional non-destructive layer)
   ========================================================================== */
.pt-8 {
  padding-top: 7.5rem;
}

.page-head {
  padding-top: 9rem;
}

.header-inner {
  height: 76px;
}

@media (min-width: 768px) {
  .main-nav {
    gap: 0.35rem;
    padding: 0.3rem;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
  }
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  transition: color 0.25s, background 0.25s, opacity 0.25s;
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.07);
}

.nav-link.is-active {
  text-decoration: none;
  background: rgba(59, 130, 246, 0.2);
  box-shadow: inset 0 0 0 1px rgba(59, 130, 246, 0.35);
}

.hero-grid {
  align-items: stretch;
  gap: 2.6rem;
}

.hero-visual {
  min-height: 600px;
  margin-top: 0.4rem;
  grid-template-rows: auto auto 1fr auto;
  gap: 0.9rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.02));
  padding: 1rem;
  overflow: hidden;
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(59, 130, 246, 0.08), transparent 28%);
}

.hero-visual-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.15rem 0.25rem 0.35rem;
  position: relative;
  z-index: 1;
}

.hero-visual-head p {
  color: var(--ink-primary);
  font-size: 0.83rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
}

.hero-visual-head span {
  color: var(--ink-secondary);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.capability-mini-cards {
  gap: 0.55rem;
  position: relative;
  z-index: 1;
}

.capability-mini-cards article {
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: 10px;
  padding: 0.6rem;
}

.iso-platform {
  width: 360px;
  height: 360px;
  margin: 0.2rem auto 0;
}

.hero-signal-stack {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem;
  position: relative;
  z-index: 1;
}

.signal-card {
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.06);
  padding: 0.55rem 0.62rem;
}

.signal-card h4 {
  font-size: 0.79rem;
  margin-bottom: 0.12rem;
}

.signal-card p {
  font-size: 0.72rem;
  line-height: 1.4;
}

.hero-bottom-metrics {
  position: relative;
  z-index: 1;
}

.hero-bottom-metrics span {
  background: rgba(255, 255, 255, 0.06);
}

.logo-marquee {
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 0.62rem 0.4rem;
  background: rgba(255, 255, 255, 0.04);
  position: relative;
}

.logo-marquee::before,
.logo-marquee::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 84px;
  z-index: 2;
  pointer-events: none;
}

.logo-marquee::before {
  left: 0;
  background: linear-gradient(90deg, var(--bg-deep), transparent);
}

.logo-marquee::after {
  right: 0;
  background: linear-gradient(270deg, var(--bg-deep), transparent);
}

.logo-track {
  gap: 0.8rem;
  animation: marquee 30s linear infinite;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.logo-track span {
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
  border-radius: 999px;
  padding: 0.3rem 0.8rem;
  font-size: 0.78rem;
  color: var(--ink-primary);
}

body[data-theme="light"] .main-nav {
  border-color: rgba(19, 42, 75, 0.11);
  background: rgba(255, 255, 255, 0.92);
}

body[data-theme="light"] .nav-link:hover {
  background: rgba(23, 114, 230, 0.09);
}

body[data-theme="light"] .nav-link.is-active {
  background: rgba(23, 114, 230, 0.14);
  box-shadow: inset 0 0 0 1px rgba(23, 114, 230, 0.26);
}

body[data-theme="light"] .hero-visual {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(239, 246, 255, 0.92));
}

body[data-theme="light"] .signal-card {
  border-color: rgba(19, 42, 75, 0.16);
  background: rgba(255, 255, 255, 0.9);
}

body[data-theme="light"] .logo-marquee::before {
  background: linear-gradient(90deg, #f5f8ff, transparent);
}

body[data-theme="light"] .logo-marquee::after {
  background: linear-gradient(270deg, #f5f8ff, transparent);
}

body[data-theme="light"] .logo-track span {
  border-color: rgba(19, 42, 75, 0.12);
  background: rgba(255, 255, 255, 0.9);
  color: #1b355c;
}

@media (max-width: 768px) {
  .page-head {
    padding-top: 7.25rem;
  }

  .hero-visual {
    min-height: auto;
    grid-template-rows: auto auto auto auto;
  }

  .hero-signal-stack {
    grid-template-columns: 1fr;
  }
}

/* Additional interaction polish */
.site-header {
  transition: background 0.3s ease, border-bottom 0.3s ease, transform 0.3s ease;
}

.site-header.header-hidden {
  transform: translateY(-100%);
}

.connect-btn {
  border-radius: 10px;
  padding-inline: 1.15rem;
}

.btn-primary {
  border-radius: 10px;
}

.btn-secondary {
  border-radius: 10px;
}

.process-strip article {
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.process-strip article:hover {
  transform: translateY(-3px);
  border-color: rgba(59, 130, 246, 0.28);
  background: rgba(255, 255, 255, 0.06);
}

.case-grid .glass-card {
  min-height: 220px;
}

@media (max-width: 768px) {
  .site-header.header-hidden {
    transform: none;
  }

  .header-actions>.connect-btn {
    display: none;
  }
}

body[data-theme="light"] .process-strip article:hover {
  border-color: rgba(23, 114, 230, 0.26);
  background: rgba(255, 255, 255, 0.94);
}

/* Subtle visible ring for theme toggle in both modes */
.theme-toggle {
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.06);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.05);
}

.theme-toggle:hover {
  border-color: rgba(255, 255, 255, 0.32);
  background: rgba(255, 255, 255, 0.12);
}

body[data-theme="light"] .theme-toggle {
  border-color: rgba(20, 49, 86, 0.2);
  background: rgba(20, 49, 86, 0.05);
  box-shadow: inset 0 0 0 1px rgba(20, 49, 86, 0.06);
}

body[data-theme="light"] .theme-toggle:hover {
  border-color: rgba(20, 49, 86, 0.32);
  background: rgba(20, 49, 86, 0.1);
}

/* Connect button gradient accent */
.connect-btn {
  background: linear-gradient(135deg, var(--accent-teal), var(--accent-blue)) !important;
  color: #fff !important;
  border: none !important;
  position: relative;
  overflow: hidden;
}

.connect-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-teal));
  opacity: 0;
  transition: opacity 0.3s;
}

.connect-btn:hover::before {
  opacity: 1;
}

body[data-theme="light"] .connect-btn {
  background: linear-gradient(135deg, var(--accent-teal), var(--accent-blue)) !important;
  color: #fff !important;
}

/* Hero visual shimmer border */
.hero-visual::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: 21px;
  background: linear-gradient(135deg,
      rgba(13, 148, 136, 0.3),
      rgba(59, 130, 246, 0.1),
      rgba(139, 92, 246, 0.2),
      rgba(13, 148, 136, 0.15));
  background-size: 300% 300%;
  animation: shimmerBorder 8s ease infinite;
  z-index: -1;
  pointer-events: none;
}

@keyframes shimmerBorder {
  0% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 0% 50%;
  }
}

/* Glass card teal hover */
.glass-card:hover {
  border-color: rgba(13, 148, 136, 0.2);
}

/* Process strip teal accent */
.process-strip article:hover {
  border-color: rgba(13, 148, 136, 0.3);
}

body[data-theme="light"] .process-strip article:hover {
  border-color: rgba(13, 148, 136, 0.25);
}

/* KL badge */
.kl-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--ink-secondary);
  margin-top: 1.5rem;
  padding: 0.35rem 0.8rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  letter-spacing: 0.03em;
}

.kl-badge svg {
  color: var(--accent-teal);
}

body[data-theme="light"] .kl-badge {
  border-color: rgba(19, 42, 75, 0.1);
  background: rgba(255, 255, 255, 0.8);
}