/* ==========================================================================
   Nister Co., Ltd. — Enterprise B2B Digital Signage & Event Tech Ecosystem
   Corporate Redesign Stylesheet (css/b2b-redesign.css)
   ========================================================================== */

:root {
  /* Core Corporate Palette */
  --bg-slate-950: #060b16;
  --bg-slate-900: #0b1325;
  --bg-slate-800: #152238;
  --bg-surface: #ffffff;
  --bg-subtle: #f8fafc;
  --bg-muted: #f1f5f9;

  /* Text Colors */
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-light: #f8fafc;
  --text-light-muted: #94a3b8;

  /* Brand & Ecosystem Accents */
  --nister-blue: #0088dd;
  --nister-blue-dark: #0062a3;
  --nister-blue-light: #e0f2fe;
  --nister-cyan: #06b6d4;

  /* 5 Sub-brand Signature Accents */
  --brand-signmate: #65a30d;       /* SignMate.co - Cloud Green */
  --brand-signmate-bg: #f7fee7;
  --brand-signnex: #ea580c;        /* Signnex.com - Enterprise Orange */
  --brand-signnex-bg: #fff7ed;
  --brand-muscreen: #0284c7;       /* MuScreen.in.th - Commercial Blue */
  --brand-muscreen-bg: #f0f9ff;
  --brand-signagestore: #e11d48;   /* SignageStore.in.th - Coral Red/Orange */
  --brand-signagestore-bg: #fff1f2;
  --brand-eventmate: #4f46e5;      /* EventMate.in.th - Event Indigo */
  --brand-eventmate-bg: #eef2ff;

  /* Borders & Shadows */
  --border-light: #e2e8f0;
  --border-hover: #cbd5e1;
  --border-dark: rgba(255, 255, 255, 0.12);
  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-sm: 0 4px 12px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 12px 28px -6px rgba(15, 23, 42, 0.1);
  --shadow-lg: 0 20px 40px -12px rgba(15, 23, 42, 0.16);
  --shadow-glow: 0 12px 32px -4px rgba(0, 136, 221, 0.28);

  /* Radii & Spacing */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  /* Typography */
  --font-sans: 'IBM Plex Sans Thai', 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Plus Jakarta Sans', 'IBM Plex Sans Thai', sans-serif;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--text-primary);
  background-color: var(--bg-surface);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

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

ul {
  list-style: none;
}

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

/* Container & Layout Utilities */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
  position: relative;
}

.section-subtle {
  background-color: var(--bg-subtle);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.section-dark {
  background: linear-gradient(145deg, var(--bg-slate-950) 0%, var(--bg-slate-900) 60%, #0f203c 100%);
  color: var(--text-light);
}

/* Section Headers */
.section-header {
  max-width: 780px;
  margin: 0 auto 56px;
  text-align: center;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: var(--nister-blue-light);
  color: var(--nister-blue-dark);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-dark .section-eyebrow {
  background: rgba(0, 136, 221, 0.18);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.3);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 3.2vw, 2.65rem);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.section-dark .section-title {
  color: #ffffff;
}

.section-subtitle {
  font-size: 1.08rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.section-dark .section-subtitle {
  color: var(--text-light-muted);
}

/* ==========================================================================
   1. Top Corporate Utility Bar & Main Sticky Navbar
   ========================================================================== */
.top-utility-bar {
  background-color: var(--bg-slate-950);
  color: var(--text-light-muted);
  font-size: 0.8125rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 8px 0;
}

.top-utility-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.utility-contacts {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.utility-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #cbd5e1;
}

.utility-item:hover {
  color: #38bdf8;
}

.utility-item svg {
  width: 14px;
  height: 14px;
  color: #38bdf8;
  flex-shrink: 0;
}

.utility-ecosystem-links {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.utility-ecosystem-label {
  color: #64748b;
  font-weight: 600;
  margin-right: 4px;
}

.eco-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.06);
  color: #e2e8f0;
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.eco-pill:hover {
  background: rgba(0, 136, 221, 0.25);
  border-color: rgba(56, 189, 248, 0.4);
  color: #ffffff;
}

.eco-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

/* Main Sticky Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-light);
  transition: box-shadow 0.25s ease, background-color 0.25s ease;
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
  background: rgba(255, 255, 255, 0.98);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 14px;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, #0099ff 0%, #005fa3 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0, 136, 221, 0.25);
  overflow: hidden;
  padding: 5px;
}

.brand-logo-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: brightness(0) invert(1);
}

.brand-logo-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--bg-slate-900);
}

.brand-name span {
  color: var(--nister-blue);
}

.brand-tagline {
  font-size: 0.66rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-top: 2px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  padding: 7px 11px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
  color: var(--nister-blue);
  background: rgba(0, 136, 221, 0.06);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* Language Switcher */
.lang-switch {
  display: inline-flex;
  align-items: center;
  background: var(--bg-muted);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  padding: 3px;
}

.lang-btn {
  border: none;
  background: transparent;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}

.lang-btn.active {
  background: #ffffff;
  color: var(--nister-blue-dark);
  box-shadow: var(--shadow-xs);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.9375rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.22s var(--ease-out);
  white-space: nowrap;
}

.btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.btn-sm {
  padding: 9px 16px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 15px 28px;
  font-size: 1rem;
  border-radius: 10px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--nister-blue) 0%, var(--nister-blue-dark) 100%);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(0, 136, 221, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
  background: linear-gradient(135deg, #0099ff 0%, #00558f 100%);
}

.btn-outline-light {
  background: rgba(255, 255, 255, 0.06);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.24);
  backdrop-filter: blur(8px);
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: #ffffff;
  transform: translateY(-2px);
}

.btn-outline {
  background: #ffffff;
  color: var(--text-primary);
  border-color: var(--border-light);
  box-shadow: var(--shadow-xs);
}

.btn-outline:hover {
  border-color: var(--nister-blue);
  color: var(--nister-blue);
  transform: translateY(-1px);
}

.mobile-menu-toggle {
  display: none;
  background: var(--bg-muted);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  cursor: pointer;
}

/* ==========================================================================
   2. Executive B2B Hero Section
   ========================================================================== */
.hero-section {
  position: relative;
  background: radial-gradient(circle at 82% 20%, rgba(0, 136, 221, 0.24) 0%, transparent 45%),
              radial-gradient(circle at 18% 80%, rgba(79, 70, 229, 0.18) 0%, transparent 45%),
              linear-gradient(160deg, #050b16 0%, #0a1529 55%, #0f213e 100%);
  color: #ffffff;
  padding: 76px 0 64px;
  overflow: hidden;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.85) 20%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.85) 20%, transparent 80%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 52px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 16px;
  border-radius: var(--radius-full);
  background: rgba(0, 136, 221, 0.15);
  border: 1px solid rgba(56, 189, 248, 0.35);
  color: #7dd3fc;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 24px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.25);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.15rem, 3.8vw, 3.35rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.025em;
  margin-bottom: 22px;
}

.hero-title .text-gradient {
  background: linear-gradient(90deg, #38bdf8 0%, #818cf8 55%, #34d399 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 1.1rem;
  color: #cbd5e1;
  line-height: 1.75;
  margin-bottom: 28px;
  max-width: 620px;
}

.hero-highlights {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px 20px;
  margin-bottom: 34px;
}

.hero-highlight-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  color: #e2e8f0;
  font-weight: 500;
}

.hero-highlight-item svg {
  width: 18px;
  height: 18px;
  color: #38bdf8;
  flex-shrink: 0;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
}

/* Right Visual: Enterprise Control Command Center */
.hero-visual-panel {
  background: rgba(15, 23, 42, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: 0 28px 60px rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(16px);
}

.command-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 14px;
  margin-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.command-window-dots {
  display: flex;
  align-items: center;
  gap: 6px;
}

.command-window-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.command-window-dots span:nth-child(1) { background: #ef4444; }
.command-window-dots span:nth-child(2) { background: #f59e0b; }
.command-window-dots span:nth-child(3) { background: #22c55e; }

.command-title {
  font-size: 0.78rem;
  font-weight: 700;
  color: #94a3b8;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.command-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: rgba(34, 197, 94, 0.15);
  color: #4ade80;
  font-size: 0.72rem;
  font-weight: 700;
}

.command-banner-preview {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  margin-bottom: 16px;
  background: #ffffff;
}

.command-banner-preview img {
  width: 100%;
  height: auto;
  display: block;
}

.command-ecosystem-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
}

.command-eco-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  padding: 10px 8px;
  text-align: center;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.command-eco-card:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #38bdf8;
  transform: translateY(-2px);
}

.command-eco-badge {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  text-transform: uppercase;
}

.command-eco-name {
  font-size: 0.78rem;
  font-weight: 800;
  color: #ffffff;
}

.command-eco-role {
  font-size: 0.68rem;
  color: #94a3b8;
  line-height: 1.25;
}

/* Hero Metrics Bar */
.hero-metrics-bar {
  position: relative;
  z-index: 2;
  margin-top: 56px;
  padding-top: 36px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.metric-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.metric-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(0, 136, 221, 0.16);
  border: 1px solid rgba(56, 189, 248, 0.28);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #38bdf8;
  flex-shrink: 0;
}

.metric-icon svg {
  width: 24px;
  height: 24px;
}

.metric-value {
  font-family: var(--font-display);
  font-size: 1.85rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1.1;
  margin-bottom: 4px;
}

.metric-label {
  font-size: 0.875rem;
  color: #94a3b8;
  line-height: 1.4;
}

/* ==========================================================================
   3. Trusted Corporate & Government Clients Strip
   ========================================================================== */
.clients-trust-bar {
  background: #ffffff;
  border-bottom: 1px solid var(--border-light);
  padding: 44px 0;
}

.clients-trust-header {
  text-align: center;
  margin-bottom: 28px;
}

.clients-trust-title {
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.clients-logo-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  align-items: center;
}

.client-logo-card {
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 108px;
  transition: all 0.22s ease;
}

.client-logo-card:hover {
  background: #ffffff;
  border-color: var(--nister-blue);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.client-logo-card img {
  max-height: 52px;
  width: auto;
  object-fit: contain;
  filter: grayscale(25%);
  transition: filter 0.2s ease;
}

.client-logo-card:hover img {
  filter: grayscale(0%);
}

.client-sector-tag {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
}

.additional-clients-strip {
  margin-top: 24px;
  padding: 16px 24px;
  border-radius: var(--radius-md);
  background: var(--bg-subtle);
  border: 1px dashed var(--border-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px 18px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.additional-clients-strip strong {
  color: var(--text-primary);
}

.client-pill-tag {
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: #ffffff;
  border: 1px solid var(--border-light);
  font-weight: 600;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   4. 5-Pillar Business Ecosystem Section (Reference Platforms)
   ========================================================================== */
.ecosystem-filter-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 42px;
}

.filter-tab-btn {
  padding: 10px 20px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-light);
  background: #ffffff;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-tab-btn:hover {
  border-color: var(--nister-blue);
  color: var(--nister-blue);
}

.filter-tab-btn.active {
  background: var(--bg-slate-900);
  color: #ffffff;
  border-color: var(--bg-slate-900);
  box-shadow: var(--shadow-sm);
}

.ecosystem-cards-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 28px;
}

.eco-platform-card {
  grid-column: span 6;
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xs);
  transition: all 0.28s var(--ease-out);
  position: relative;
}

.eco-platform-card.span-4 {
  grid-column: span 4;
}

.eco-platform-card.hidden-card {
  display: none;
}

.eco-platform-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-hover);
}

.eco-card-top-bar {
  height: 6px;
  width: 100%;
}

.eco-card-header {
  padding: 28px 28px 20px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.eco-brand-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  margin-bottom: 10px;
}

.eco-card-title {
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.eco-domain-pill {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 6px;
  background: var(--bg-muted);
  color: var(--text-secondary);
  border: 1px solid var(--border-light);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.eco-domain-pill:hover {
  background: var(--nister-blue-light);
  color: var(--nister-blue-dark);
  border-color: #bae6fd;
}

.eco-card-tagline {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-top: 4px;
}

.eco-card-preview-box {
  margin: 0 28px 20px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-light);
  background: var(--bg-subtle);
  display: grid;
  grid-template-columns: 160px 1fr;
  align-items: center;
}

.eco-platform-card.span-4 .eco-card-preview-box {
  grid-template-columns: 1fr;
}

.eco-card-thumb {
  width: 100%;
  height: 140px;
  object-fit: cover;
  background: #ffffff;
}

.eco-card-summary {
  padding: 16px 18px;
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.eco-card-body {
  padding: 0 28px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.eco-feature-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 16px;
  margin-bottom: 22px;
}

.eco-platform-card.span-4 .eco-feature-list {
  grid-template-columns: 1fr;
}

.eco-feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

.eco-feature-list li svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  margin-top: 3px;
}

.eco-ideal-for {
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.eco-ideal-for strong {
  color: var(--text-primary);
}

.eco-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--border-light);
  flex-wrap: wrap;
}

/* ==========================================================================
   5. Interactive B2B Solution Recommender & Architecture Comparison
   ========================================================================== */
.recommender-box {
  background: linear-gradient(145deg, #0b1325 0%, #132342 100%);
  border-radius: var(--radius-xl);
  padding: 40px;
  color: #ffffff;
  border: 1px solid rgba(56, 189, 248, 0.25);
  box-shadow: var(--shadow-lg);
  margin-bottom: 56px;
}

.recommender-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 36px;
  align-items: stretch;
}

.recommender-step-group {
  margin-bottom: 22px;
}

.recommender-step-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  color: #bae6fd;
  margin-bottom: 10px;
}

.recommender-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.rec-option-btn {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: #e2e8f0;
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  text-align: left;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.rec-option-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(56, 189, 248, 0.5);
}

.rec-option-btn.active {
  background: rgba(0, 136, 221, 0.28);
  border-color: #38bdf8;
  color: #ffffff;
  box-shadow: 0 0 0 1px #38bdf8;
}

.rec-option-title {
  font-size: 0.875rem;
  font-weight: 700;
}

.rec-option-sub {
  font-size: 0.75rem;
  color: #94a3b8;
}

.recommender-result-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.rec-result-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: rgba(34, 197, 94, 0.2);
  color: #4ade80;
  font-size: 0.75rem;
  font-weight: 700;
  width: fit-content;
  margin-bottom: 12px;
}

.rec-result-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 10px;
}

.rec-result-desc {
  font-size: 0.92rem;
  color: #cbd5e1;
  line-height: 1.65;
  margin-bottom: 18px;
}

.rec-result-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.rec-tag {
  padding: 4px 10px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.1);
  font-size: 0.78rem;
  font-weight: 600;
  color: #f8fafc;
}

/* Comparison Matrix Table */
.comparison-table-wrapper {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  box-shadow: var(--shadow-sm);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 780px;
}

.comparison-table th,
.comparison-table td {
  padding: 18px 22px;
  text-align: left;
  border-bottom: 1px solid var(--border-light);
  font-size: 0.92rem;
}

.comparison-table thead th {
  background: var(--bg-subtle);
  font-weight: 800;
  color: var(--text-primary);
  font-size: 0.95rem;
}

.comparison-table tbody tr:hover {
  background: rgba(0, 136, 221, 0.02);
}

.comparison-table tbody tr:last-child td {
  border-bottom: none;
}

.table-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
}

/* ==========================================================================
   6. Interactive CMS Multi-Zone Simulator & Hardware Showcase
   ========================================================================== */
.cms-simulator-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 44px;
  align-items: center;
}

.cms-layout-controls {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.cms-preset-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  text-align: left;
  color: #ffffff;
  cursor: pointer;
  transition: all 0.22s ease;
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.cms-preset-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(56, 189, 248, 0.4);
}

.cms-preset-btn.active {
  background: rgba(0, 136, 221, 0.22);
  border-color: #38bdf8;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

.cms-preset-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: rgba(56, 189, 248, 0.16);
  color: #38bdf8;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.cms-preset-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.cms-preset-desc {
  font-size: 0.85rem;
  color: #94a3b8;
  line-height: 1.5;
}

/* Mockup Screen Frame */
.screen-simulator-frame {
  background: #090f1d;
  border: 8px solid #1e293b;
  border-radius: 20px;
  padding: 16px;
  box-shadow: 0 28px 60px rgba(0, 0, 0, 0.55);
  position: relative;
}

.screen-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 12px;
  margin-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.78rem;
  color: #94a3b8;
}

.screen-zones-canvas {
  display: grid;
  gap: 10px;
  min-height: 310px;
  transition: all 0.3s ease;
}

.screen-zones-canvas.layout-corporate {
  grid-template-columns: 1.6fr 1fr;
  grid-template-rows: 1fr 1fr auto;
}

.screen-zones-canvas.layout-retail {
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: 1fr auto;
}

.screen-zones-canvas.layout-hospital {
  grid-template-columns: 1.3fr 1fr;
  grid-template-rows: 1fr auto;
}

.sim-zone {
  border-radius: 10px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border: 1px solid rgba(255, 255, 255, 0.14);
  position: relative;
  overflow: hidden;
}

.sim-zone-tag {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 3px 8px;
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.35);
  color: #ffffff;
  width: fit-content;
}

.sim-zone-title {
  font-size: 1rem;
  font-weight: 800;
  color: #ffffff;
  margin-top: 12px;
}

.sim-zone-sub {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.8);
}

.sim-ticker-bar {
  grid-column: 1 / -1;
  background: #0284c7;
  color: #ffffff;
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* ==========================================================================
   7. Hardware & Event Rental Showcase Grid (MuScreen, Signage Store, EventMate)
   ========================================================================== */
.hardware-showcase-top {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 44px;
  align-items: center;
  margin-bottom: 48px;
}

.hardware-kiosk-visual {
  background: linear-gradient(145deg, #f8fafc 0%, #e2e8f0 100%);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.hardware-kiosk-visual img {
  max-height: 400px;
  width: auto;
  filter: drop-shadow(0 20px 30px rgba(15, 23, 42, 0.18));
}

.hardware-catalog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.hw-item-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: all 0.22s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.hw-item-card:hover {
  border-color: var(--nister-blue);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.hw-item-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--nister-blue-light);
  color: var(--nister-blue-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.hw-item-icon svg {
  width: 24px;
  height: 24px;
}

.hw-item-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.hw-item-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.6;
}

.hw-item-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--border-light);
  font-size: 0.8rem;
  font-weight: 700;
}

/* ==========================================================================
   8. B2B Industry Solutions (Use Cases by Sector)
   ========================================================================== */
.industry-tabs-nav {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
  margin-bottom: 32px;
}

.industry-tab-btn {
  padding: 14px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  background: #ffffff;
  color: var(--text-secondary);
  font-weight: 700;
  font-size: 0.86rem;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
}

.industry-tab-btn svg {
  width: 22px;
  height: 22px;
  color: var(--nister-blue);
}

.industry-tab-btn:hover {
  border-color: var(--nister-blue);
  background: var(--bg-subtle);
}

.industry-tab-btn.active {
  background: var(--nister-blue);
  color: #ffffff;
  border-color: var(--nister-blue);
  box-shadow: var(--shadow-sm);
}

.industry-tab-btn.active svg {
  color: #ffffff;
}

.industry-content-panel {
  display: none;
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-sm);
}

.industry-content-panel.active {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 36px;
  align-items: center;
}

.industry-usecase-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 24px 0;
}

.industry-usecase-item {
  padding: 16px;
  border-radius: var(--radius-sm);
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
}

.industry-usecase-item h5 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.industry-usecase-item p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.industry-case-box {
  background: linear-gradient(145deg, #0b1325 0%, #162647 100%);
  color: #ffffff;
  border-radius: var(--radius-md);
  padding: 28px;
}

/* ==========================================================================
   9. Companion Solutions (PocketQ / LetzQ / SurveySlash / Custom Dev) & SLA Steps
   ========================================================================== */
.companion-solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.companion-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 26px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.sla-steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.sla-step-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  position: relative;
}

.sla-step-number {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--nister-blue);
  color: #ffffff;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.sla-step-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.sla-step-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   10. B2B Quote Request & Corporate Contact Section
   ========================================================================== */
.contact-b2b-grid {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 44px;
  align-items: start;
}

.contact-info-panel {
  background: var(--bg-slate-900);
  color: #ffffff;
  border-radius: var(--radius-lg);
  padding: 36px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-channel-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin: 28px 0;
}

.contact-channel-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-channel-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(0, 136, 221, 0.2);
  border: 1px solid rgba(56, 189, 248, 0.3);
  color: #38bdf8;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-channel-icon svg {
  width: 20px;
  height: 20px;
}

.contact-channel-label {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #94a3b8;
  margin-bottom: 2px;
}

.contact-channel-val {
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
}

.contact-channel-val a:hover {
  color: #38bdf8;
}

.contact-direct-panel {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-md);
}

.direct-action-grid {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 24px;
}

.direct-action-card {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  background: var(--bg-subtle);
  transition: all 0.22s ease;
}

.direct-action-card:hover {
  background: #ffffff;
  border-color: var(--nister-blue);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.direct-action-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.direct-action-icon svg {
  width: 24px;
  height: 24px;
}

.direct-action-label {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.direct-action-value {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-primary);
}

.direct-action-sub {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

.direct-checklist-box {
  padding: 20px;
  border-radius: var(--radius-md);
  background: var(--bg-subtle);
  border: 1px dashed var(--border-hover);
}

/* ==========================================================================
   11. Corporate Footer
   ========================================================================== */
.site-footer {
  background: var(--bg-slate-950);
  color: #94a3b8;
  padding: 72px 0 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-heading {
  font-size: 0.9rem;
  font-weight: 700;
  color: #ffffff;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 18px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: #38bdf8;
}

.footer-bottom {
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.85rem;
}

/* Back to Top Floating Button */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--nister-blue);
  color: #ffffff;
  border: none;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: all 0.25s ease;
  z-index: 900;
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--nister-blue-dark);
}

/* ==========================================================================
   Multi-Page Inner Hero, Summary Cards & Bottom CTA Strip
   ========================================================================== */
.page-hero {
  position: relative;
  background: radial-gradient(circle at 85% 20%, rgba(0, 136, 221, 0.22) 0%, transparent 50%),
              linear-gradient(155deg, #060b16 0%, #0b1528 60%, #102344 100%);
  color: #ffffff;
  padding: 58px 0 54px;
  overflow: hidden;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.breadcrumb-bar {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  font-weight: 600;
  color: #94a3b8;
  margin-bottom: 16px;
}

.breadcrumb-bar a {
  color: #38bdf8;
}

.breadcrumb-bar a:hover {
  text-decoration: underline;
}

.page-hero-title {
  font-family: var(--font-display);
  font-size: clamp(1.95rem, 3.2vw, 2.75rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: #ffffff;
  margin-bottom: 14px;
  max-width: 860px;
}

.page-hero-subtitle {
  font-size: 1.06rem;
  color: #cbd5e1;
  line-height: 1.7;
  max-width: 780px;
}

.home-summary-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.home-summary-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-xs);
  transition: all 0.25s var(--ease-out);
  position: relative;
  overflow: hidden;
}

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

.cta-banner-strip {
  background: linear-gradient(135deg, #0b1325 0%, #0f2447 55%, #005fa3 100%);
  color: #ffffff;
  padding: 56px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.cta-banner-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

/* ==========================================================================
   12. Responsive Breakpoints (Tablet & Mobile)
   ========================================================================== */
@media (max-width: 1100px) {
  .hero-inner,
  .recommender-grid,
  .cms-simulator-grid,
  .hardware-showcase-top,
  .contact-b2b-grid,
  .industry-content-panel.active {
    grid-template-columns: 1fr;
  }

  .eco-platform-card,
  .eco-platform-card.span-4 {
    grid-column: span 6;
  }

  .industry-tabs-nav {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 78px;
    left: 0;
    right: 0;
    background: #ffffff;
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px 24px;
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow-md);
  }

  .nav-menu.open {
    display: flex;
  }

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

  .hero-metrics-bar,
  .sla-steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .clients-logo-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hardware-catalog-grid,
  .companion-solutions-grid,
  .home-summary-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .eco-platform-card,
  .eco-platform-card.span-4 {
    grid-column: span 12;
  }
}

@media (max-width: 640px) {
  .section {
    padding: 64px 0;
  }

  .utility-ecosystem-links {
    display: none;
  }

  .hero-highlights,
  .hero-metrics-bar,
  .recommender-options,
  .hardware-catalog-grid,
  .companion-solutions-grid,
  .home-summary-grid,
  .sla-steps-grid,
  .form-grid-2,
  .industry-usecase-list,
  .eco-feature-list,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .command-ecosystem-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .eco-card-preview-box {
    grid-template-columns: 1fr;
  }

  .industry-tabs-nav {
    grid-template-columns: repeat(2, 1fr);
  }

  .recommender-box,
  .contact-direct-panel,
  .contact-info-panel {
    padding: 24px 20px;
  }
}