/* ==========================================================================
   VICENTER VIET NAM COMPANY LIMITED — ARCHITECTURAL DESIGN SYSTEM
   Standard: Swiss Precision & Cupertino Daylight-Slate Contrast
   Typography: 'Newsreader' + 'Be Vietnam Pro' + 'JetBrains Mono'
   Compliance: Decree 13/2023/ND-CP, Apple HIG, GDPR Art. 6 & 13
   ========================================================================== */

:root {
  /* Color Palette — Architectural Daylight & Enterprise Slate */
  --bg-ivory: #FAF8F5;
  --bg-surface: #FFFFFF;
  --bg-stone: #F1EFEA;
  --bg-stone-subtle: #F7F5F0;
  --bg-slate-dark: #0B0F17;
  --bg-slate-card: #131B2E;
  --bg-slate-surface: #1A2338;
  
  /* Borders */
  --border-hairline: rgba(15, 23, 42, 0.08);
  --border-medium: rgba(15, 23, 42, 0.14);
  --border-strong: rgba(15, 23, 42, 0.24);
  --border-dark-hairline: rgba(255, 255, 255, 0.12);
  --border-dark-medium: rgba(255, 255, 255, 0.20);

  /* Typography Colors */
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #64748B;
  --text-light: #F8FAFC;
  --text-light-muted: #94A3B8;

  /* Brand Accents */
  --cobalt: #1D4ED8;
  --cobalt-hover: #1E40AF;
  --cobalt-light: #3B82F6;
  --cobalt-subtle: rgba(29, 78, 216, 0.08);
  --emerald: #059669;
  --emerald-subtle: rgba(5, 150, 105, 0.10);
  --amber: #D97706;
  --amber-subtle: rgba(217, 119, 6, 0.10);

  /* Fonts */
  --font-serif: 'Newsreader', Georgia, serif;
  --font-sans: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Elevation & Shadows */
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.04), 0 1px 2px rgba(15, 23, 42, 0.03);
  --shadow-md: 0 4px 14px rgba(15, 23, 42, 0.06), 0 1px 3px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 16px 36px rgba(15, 23, 42, 0.08), 0 2px 6px rgba(15, 23, 42, 0.04);
  --shadow-slate: 0 20px 48px rgba(0, 0, 0, 0.35);

  /* Geometry */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-pill: 9999px;

  /* Physics Transitions */
  --ease-spring: cubic-bezier(0.22, 1, 0.36, 1);
  --transition-fast: 0.18s var(--ease-spring);
  --transition-base: 0.28s var(--ease-spring);
}

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

html, body {
  overflow-x: hidden;
  max-width: 100%;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-ivory);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-image: 
    linear-gradient(to right, rgba(15, 23, 42, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(15, 23, 42, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* Typography Scale */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.2;
}

.serif-display {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
}

.mono-spec {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

/* Layout Utilities & Overflow Constraints */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
  box-sizing: border-box;
}

.legal-grid > *,
.legal-main,
.hero-grid > *,
.featurette-card > *,
.featurette-row > *,
.portal-grid > *,
.corporate-card,
.interactive-portal-card,
.legal-article {
  min-width: 0;
  max-width: 100%;
}

.legal-main code, .legal-main a, .legal-main td,
.legal-content code, .legal-content a, .legal-content td {
  overflow-wrap: anywhere;
  word-break: break-word;
}

/* ==========================================================================
   NAVIGATION BAR (Institutional Swiss Top Bar)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(250, 248, 245, 0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-hairline);
  transition: var(--transition-base);
  width: 100%;
}

.nav-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
  gap: 1.25rem;
  width: 100%;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 800;
  letter-spacing: -0.02em;
  flex-shrink: 0;
  min-width: 0;
}

.brand-logo-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  display: block;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-medium);
}

.brand-title-wrap {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.brand-name {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  line-height: 1.1;
  white-space: nowrap;
}

.brand-tagline {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
  margin-top: 2px;
  white-space: nowrap;
}

/* Header Links (Hick's Law: Exactly 3 top anchors) */
.nav-center {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: var(--transition-fast);
  padding: 0.5rem 0.25rem;
  position: relative;
}

.nav-link:hover, .nav-link:focus-visible {
  color: var(--cobalt);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: var(--cobalt);
  transition: width 0.2s var(--ease-spring);
}

.nav-link:hover::after {
  width: 100%;
}

.mobile-drawer-cta {
  display: none !important;
}

/* Header Controls: Lang Toggle & CTA */
.nav-controls {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-shrink: 0;
}

/* Bilingual Toggle Switch */
.lang-toggle-btn {
  display: inline-flex;
  align-items: center;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-pill);
  padding: 4px;
  cursor: pointer;
  height: 42px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-fast);
  flex-shrink: 0;
}

.lang-toggle-btn:hover {
  border-color: var(--cobalt);
}

.lang-pill {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  color: var(--text-muted);
  transition: var(--transition-fast);
  user-select: none;
}

.lang-pill.active {
  background-color: var(--cobalt);
  color: #FFFFFF;
}

/* Primary Button (Fitts's Law >= 48px) */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  min-height: 48px;
  padding: 0 1.5rem;
  background-color: var(--cobalt);
  color: #FFFFFF;
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-primary:hover, .btn-primary:focus-visible {
  background-color: var(--cobalt-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  min-height: 48px;
  padding: 0 1.4rem;
  background-color: var(--bg-surface);
  color: var(--text-primary);
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-medium);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-secondary:hover, .btn-secondary:focus-visible {
  background-color: var(--bg-stone);
  border-color: var(--text-muted);
  transform: translateY(-1px);
}

.btn-apple-store {
  background-color: #0F172A;
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-apple-store:hover {
  background-color: #000000;
  border-color: rgba(255, 255, 255, 0.3);
}

/* Mobile Toggle (Fitts's Law >= 44px) */
#mobile-toggle,
.mobile-menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  flex-shrink: 0;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  padding: 0;
  position: relative;
  z-index: 1002;
}

.hamburger-line {
  width: 22px;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition-fast);
  pointer-events: none;
}

.mobile-menu-toggle.is-active .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-menu-toggle.is-active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.is-active .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ==========================================================================
   HERO SECTION (12-Column Architectural Split Grid)
   ========================================================================== */
.hero-section {
  padding: 4.5rem 0 5rem;
  position: relative;
  border-bottom: 1px solid var(--border-hairline);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3.5rem;
  align-items: center;
}

/* Left Hero Column */
.hero-left {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.credential-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  width: fit-content;
  box-shadow: var(--shadow-sm);
}

.live-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--emerald);
  box-shadow: 0 0 0 3px var(--emerald-subtle);
  animation: pulse-emerald 2s infinite ease-in-out;
}

@keyframes pulse-emerald {
  0%, 100% { box-shadow: 0 0 0 3px var(--emerald-subtle); }
  50% { box-shadow: 0 0 0 6px rgba(5, 150, 105, 0.25); }
}

.credential-text {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.04em;
}

.hero-title {
  font-size: clamp(2.3rem, 4.2vw, 3.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  line-height: 1.12;
}

.hero-title .serif-accent {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  color: var(--cobalt);
}

.hero-summary {
  font-size: 1.125rem;
  line-height: 1.75;
  color: var(--text-secondary);
  max-width: 620px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.hero-trust-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-hairline);
}

.trust-item-value {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.trust-item-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
  margin-top: 2px;
}

/* Right Hero Column: Interactive iOS HIG Device Inspector */
.hero-inspector {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

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

.inspector-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--bg-stone);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-pill);
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-fast);
}

.theme-toggle-btn:hover {
  background: var(--bg-ivory);
  color: var(--cobalt);
}

/* Inspector Tabs */
.inspector-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  background: var(--bg-stone);
  padding: 4px;
  border-radius: var(--radius-md);
}

.inspector-tab-btn {
  background: transparent;
  border: none;
  padding: 8px 6px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  text-align: center;
  transition: var(--transition-fast);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-height: 40px;
}

.inspector-tab-btn.active {
  background: var(--bg-surface);
  color: var(--cobalt);
  font-weight: 700;
  box-shadow: var(--shadow-sm);
}

/* Inspector Device Frame Container */
.device-preview-frame {
  background-color: #F8FAFC;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  min-height: 330px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

/* Dark Mode Device Frame Variant */
.device-preview-frame.mode-dark {
  background-color: #0D131F;
  border-color: rgba(255, 255, 255, 0.16);
  color: #F8FAFC;
}

.device-preview-frame.mode-dark .preview-spec-box {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.10);
  color: #E2E8F0;
}

.device-preview-frame.mode-dark .preview-title {
  color: #FFFFFF;
}

.device-preview-frame.mode-dark .preview-desc {
  color: #94A3B8;
}

.device-preview-frame.mode-dark .preview-status-tag {
  background: rgba(5, 150, 105, 0.2);
  color: #34D399;
}

/* Device Preview Content */
.preview-status-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  margin-bottom: 0.75rem;
}

.preview-status-tag {
  background: var(--emerald-subtle);
  color: var(--emerald);
  padding: 3px 8px;
  border-radius: var(--radius-pill);
  font-weight: 700;
}

.preview-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}

.preview-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 1rem;
}

.preview-spec-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
  margin-bottom: 1rem;
}

.preview-spec-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  padding: 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.preview-spec-label {
  color: var(--text-muted);
  font-size: 0.68rem;
  display: block;
}

.preview-spec-value {
  font-weight: 700;
  color: var(--cobalt);
  margin-top: 2px;
}

.preview-code-readout {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  background: rgba(15, 23, 42, 0.05);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.75rem;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.device-preview-frame.mode-dark .preview-code-readout {
  background: rgba(0, 0, 0, 0.4);
  border-color: rgba(255, 255, 255, 0.08);
  color: #38BDF8;
}

/* ==========================================================================
   ENTERPRISE SYSTEMS BLUEPRINT SECTION (High-Contrast Slate Zone #0B0F17)
   ========================================================================== */
.blueprint-section {
  background-color: var(--bg-slate-dark);
  color: var(--text-light);
  padding: 5.5rem 0;
  position: relative;
  border-top: 1px solid var(--border-medium);
  border-bottom: 1px solid var(--border-medium);
}

.blueprint-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 3.5rem;
}

.blueprint-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cobalt-light);
  display: inline-block;
  margin-bottom: 0.75rem;
}

.blueprint-title {
  font-size: clamp(2rem, 3.4vw, 2.75rem);
  font-weight: 800;
  color: #FFFFFF;
  line-height: 1.2;
}

.blueprint-subtitle {
  font-size: 1.05rem;
  color: var(--text-light-muted);
  margin-top: 1rem;
  line-height: 1.7;
}

/* 4-Node Blueprint Architecture Diagram */
.blueprint-topology {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  position: relative;
}

.topology-node {
  background: var(--bg-slate-card);
  border: 1px solid var(--border-dark-hairline);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  position: relative;
  transition: var(--transition-fast);
}

.topology-node:hover {
  border-color: var(--cobalt-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(29, 78, 216, 0.2);
}

.node-step {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--cobalt-light);
  margin-bottom: 0.5rem;
}

.node-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 0.5rem;
}

.node-desc {
  font-size: 0.85rem;
  color: var(--text-light-muted);
  line-height: 1.5;
  margin-bottom: 1rem;
}

.node-metric {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--emerald);
  background: rgba(5, 150, 105, 0.12);
  border: 1px solid rgba(5, 150, 105, 0.25);
  border-radius: var(--radius-sm);
  padding: 4px 8px;
  display: inline-block;
}

/* ==========================================================================
   DUAL-TRACK ENGINEERING SHOWCASE (Editorial Featurettes with WebP)
   ========================================================================== */
.showcase-section {
  padding: 5.5rem 0;
  border-bottom: 1px solid var(--border-hairline);
}

.section-editorial-header {
  margin-bottom: 3.5rem;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--cobalt);
  display: block;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: clamp(2rem, 3.2vw, 2.75rem);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.2;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 720px;
  margin-top: 0.75rem;
  line-height: 1.7;
}

/* 3 Featurette Rows (Alternating Layout) */
.featurettes-list {
  display: flex;
  flex-direction: column;
  gap: 4rem;
}

.featurette-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
}

.featurette-row.reverse {
  direction: rtl;
}

.featurette-row.reverse > * {
  direction: ltr;
}

.featurette-image-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-medium);
  box-shadow: var(--shadow-md);
  background: var(--bg-stone);
}

.featurette-image {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.4s var(--ease-spring);
}

.featurette-row:hover .featurette-image {
  transform: scale(1.02);
}

.featurette-content {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.featurette-category {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--cobalt);
}

.featurette-title {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.25;
}

.featurette-body {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.featurette-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  padding: 1rem 0;
  border-top: 1px solid var(--border-hairline);
  border-bottom: 1px solid var(--border-hairline);
}

.spec-item-label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.spec-item-value {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* ==========================================================================
   VIETNAM CORPORATE LEGAL LEDGER & INTERACTIVE DATA PORTAL
   ========================================================================== */
.governance-section {
  padding: 5.5rem 0;
  background-color: var(--bg-stone-subtle);
  border-bottom: 1px solid var(--border-hairline);
}

.governance-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

/* Corporate Info Card */
.corporate-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  padding: 2.25rem;
  box-shadow: var(--shadow-sm);
}

.corporate-header {
  margin-bottom: 1.5rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-hairline);
}

.corporate-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-top: 0.25rem;
}

.corporate-sub {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

.corporate-ledger-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.corporate-ledger-table tr {
  border-bottom: 1px solid var(--border-hairline);
}

.corporate-ledger-table tr:last-child {
  border-bottom: none;
}

.corporate-ledger-table td {
  padding: 0.85rem 0;
  vertical-align: top;
}

.ledger-key {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  width: 40%;
  font-weight: 600;
}

.ledger-val {
  color: var(--text-primary);
  font-weight: 600;
}

.badge-verified {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--emerald);
  background: var(--emerald-subtle);
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  font-weight: 700;
}

/* Interactive Portal Card */
.interactive-portal-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  padding: 2.25rem;
  box-shadow: var(--shadow-md);
}

.portal-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  background: var(--bg-stone);
  padding: 4px;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
}

.portal-tab-btn {
  background: transparent;
  border: none;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
  text-align: center;
  transition: var(--transition-fast);
  min-height: 40px;
}

.portal-tab-btn.active {
  background: var(--bg-surface);
  color: var(--cobalt);
  box-shadow: var(--shadow-sm);
}

.portal-form {
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-primary);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.75rem 0.9rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  background: var(--bg-ivory);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  outline: none;
  transition: var(--transition-fast);
  box-sizing: border-box;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--cobalt);
  background: #FFFFFF;
  box-shadow: 0 0 0 3px var(--cobalt-subtle);
}

.form-textarea {
  resize: vertical;
  min-height: 85px;
}

.portal-action-row {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.portal-ticket-feedback {
  background: var(--bg-stone);
  border: 1px dashed var(--border-medium);
  border-radius: var(--radius-sm);
  padding: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  display: none;
  margin-top: 0.5rem;
}

.portal-ticket-feedback.active {
  display: block;
}

/* ==========================================================================
   FOOTER (Unified Institutional Swiss Footer)
   ========================================================================== */
.site-footer {
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-hairline);
  padding: 4.5rem 0 2.5rem;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.6;
  margin-top: 0.75rem;
  max-width: 320px;
}

.footer-column h4 {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

.footer-column ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-column a {
  text-decoration: none;
  font-size: 0.88rem;
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.footer-column a:hover {
  color: var(--cobalt);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--border-hairline);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* Legal Documents Style (privacy.html & terms.html) */
.legal-main {
  padding: 4rem 0 6rem;
}

.legal-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 3.5rem;
  align-items: start;
}

.legal-toc-rail {
  position: sticky;
  top: 105px;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.legal-toc-title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-hairline);
}

.legal-toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.legal-toc-link {
  text-decoration: none;
  font-size: 0.82rem;
  color: var(--text-secondary);
  transition: var(--transition-fast);
  display: block;
}

.legal-toc-link:hover {
  color: var(--cobalt);
  transform: translateX(3px);
}

.legal-article {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  padding: 3.5rem;
  box-shadow: var(--shadow-md);
}

.legal-header {
  border-bottom: 1px solid var(--border-hairline);
  padding-bottom: 2rem;
  margin-bottom: 2.5rem;
}

.legal-h1 {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.2;
}

.legal-meta {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

.legal-content h2 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 2.25rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-hairline);
}

.legal-content h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 1.5rem 0 0.5rem;
}

.legal-content p, .legal-content li {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.legal-content ul, .legal-content ol {
  padding-left: 1.5rem;
  margin-bottom: 1.25rem;
}

/* Scrollable Container for All Legal Tables */
.legal-table-wrap {
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 1.5rem 0 2rem;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
}

.legal-table {
  min-width: 520px;
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  text-align: left;
}

.legal-table th {
  background: var(--bg-stone);
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--text-primary);
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-medium);
}

.legal-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-hairline);
  color: var(--text-secondary);
}

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

/* Callout Box within Legal Pages */
.legal-callout {
  background: var(--bg-stone);
  border-left: 4px solid var(--cobalt);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
}

.legal-callout p {
  margin-bottom: 0;
}

/* ==========================================================================
   RESPONSIVE MEDIA QUERIES (Mobile Breakpoints)
   ========================================================================== */
@media (max-width: 980px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  
  .blueprint-topology {
    grid-template-columns: repeat(2, 1fr);
  }

  .featurette-row {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 1.75rem;
  }

  .featurette-row.reverse {
    direction: ltr;
  }

  .governance-grid {
    grid-template-columns: 1fr;
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .legal-grid {
    grid-template-columns: 1fr;
  }

  .legal-toc-rail {
    position: static;
  }
}

/* Mobile Navigation Breakpoint (<= 860px) */
@media (max-width: 860px) {
  .site-header {
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    background: #FAF8F5 !important;
  }

  .nav-wrapper {
    height: 72px;
    gap: 0.75rem;
  }

  /* Hide top bar buttons on mobile */
  .nav-controls .btn-primary,
  .nav-controls .btn-secondary {
    display: none !important;
  }

  /* Robust, perfectly clickable mobile menu button */
  #mobile-toggle,
  .mobile-menu-toggle {
    display: inline-flex !important;
    width: 44px !important;
    height: 44px !important;
    min-width: 44px !important;
    min-height: 44px !important;
    flex-shrink: 0 !important;
    position: relative !important;
    z-index: 1002 !important;
  }

  /* Full-width, unclipped mobile menu drawer */
  .nav-center {
    display: none;
  }

  .nav-center.is-open {
    position: fixed !important;
    top: 72px !important;
    left: 0 !important;
    right: 0 !important;
    width: 100vw !important;
    transform: none !important;
    background: #FAF8F5 !important;
    padding: 24px !important;
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.15) !important;
    border-bottom: 1px solid rgba(15, 23, 42, 0.12) !important;
    z-index: 1001 !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 12px !important;
    box-sizing: border-box !important;
    max-height: calc(100vh - 72px);
    overflow-y: auto;
  }

  .nav-link {
    font-size: 1.05rem;
    padding: 0.85rem 1rem;
    border-radius: var(--radius-sm);
    color: var(--text-primary);
  }

  .nav-link:hover {
    background: var(--bg-stone);
  }

  /* Mobile CTA inside drawer - ONLY when drawer is open */
  .nav-center.is-open .mobile-drawer-cta {
    display: inline-flex !important;
    margin-top: 8px;
    width: 100%;
    justify-content: center;
  }

  .legal-article {
    padding: 2rem 1.25rem;
  }
}

@media (max-width: 640px) {
  .featurette-specs {
    grid-template-columns: 1fr !important;
  }

  .portal-tabs {
    grid-template-columns: 1fr !important;
  }

  .lang-toggle-btn {
    min-height: 44px;
  }

  .inspector-tab-btn {
    min-height: 44px;
    padding: 10px 4px;
  }
}

@media (max-width: 480px) {
  .brand-tagline {
    display: none !important;
  }

  .brand-logo-icon {
    width: 36px !important;
    height: 36px !important;
  }

  .brand-name {
    font-size: 0.92rem !important;
  }

  .lang-toggle-btn {
    height: 38px;
    padding: 2px;
  }

  .lang-pill {
    padding: 4px 7px;
    font-size: 0.7rem;
  }

  .hero-trust-metrics {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .blueprint-topology {
    grid-template-columns: 1fr;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .portal-action-row {
    flex-direction: column;
  }
}