/* ==========================================================================
   ПК «Оценка риска 1.0» — Корпоративный стиль ССПЭБ (UHSEP)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Montserrat:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400&family=JetBrains+Mono:wght@400;600&display=swap');

:root {
  /* UHSEP Corporate Palette */
  --uhsep-blue: #253679;
  --uhsep-blue-dark: #1c2148;
  --uhsep-blue-light: #364998;
  --uhsep-blue-subtle: #edf1ff;
  
  --uhsep-gold: #ead3a7;
  --uhsep-gold-light: #f5e7ce;
  --uhsep-gold-dark: #cfae74;
  --uhsep-gold-glow: rgba(234, 211, 167, 0.35);

  --primary: var(--uhsep-blue);
  --primary-hover: #1c2b64;
  --primary-light: var(--uhsep-blue-subtle);
  
  --accent-gold: var(--uhsep-gold);
  --accent-cyan: #38bdf8;
  --accent-green: #10b981;
  --accent-orange: #f97316;

  --dark-bg: #10152e;
  --dark-surface: #181e42;
  --dark-surface-card: #202755;
  --dark-border: #2d366f;
  --dark-text: #f8fafc;
  --dark-muted: #a5b4fc;

  --light-bg: #f8fafc;
  --light-surface: #ffffff;
  --light-border: #e2e8f0;
  --light-text: #1e293b;
  --light-muted: #64748b;

  --font-sans: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', Consolas, monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.12), 0 2px 4px -2px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.15), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.25), 0 8px 10px -6px rgba(0, 0, 0, 0.15);
  --shadow-gold: 0 0 20px rgba(234, 211, 167, 0.3);

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--light-bg);
  color: var(--light-text);
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

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

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(28, 33, 72, 0.96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 2px solid var(--uhsep-gold);
  color: #fff;
  transition: all var(--transition-normal);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 16px;
  padding: 8px 0;
  max-width: 1400px;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  white-space: nowrap;
  text-decoration: none;
}

.logo-icon-svg {
  height: 42px;
  width: auto;
  flex-shrink: 0;
  filter: drop-shadow(0 0 8px rgba(234, 211, 167, 0.4));
}

.logo-text {
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  white-space: nowrap;
}

.logo-title {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  color: #ffffff;
  line-height: 1.15;
  white-space: nowrap;
}

.logo-badge {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--uhsep-gold);
  white-space: nowrap;
}

nav {
  display: flex;
  justify-content: flex-end;
  flex-grow: 1;
  min-width: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px 12px;
  list-style: none;
  flex-wrap: nowrap;
  margin: 0;
  padding: 0;
}

.nav-link {
  font-size: 0.78rem;
  font-weight: 700;
  color: #e2e8f0;
  transition: all var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  white-space: nowrap;
  padding: 4px 6px;
  border-radius: var(--radius-sm);
}

.nav-link:hover {
  color: var(--uhsep-gold);
  background: rgba(255, 255, 255, 0.05);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 3px;
  border-radius: 20px;
  white-space: nowrap;
  flex-shrink: 0;
  gap: 2px;
}

.lang-btn {
  display: inline-block;
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  padding: 4px 10px;
  border-radius: 14px;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  transition: all 0.2s ease;
  line-height: 1.1;
  text-align: center;
}

.lang-btn:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.14);
}

.lang-btn.active {
  color: #ffffff;
  background: #2563eb;
  cursor: default;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.25);
}


.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  cursor: pointer;
  padding: 6px;
  flex-shrink: 0;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.btn-primary {
  background: var(--uhsep-gold);
  color: #1c2148;
  border-color: var(--uhsep-gold);
  box-shadow: 0 4px 14px rgba(234, 211, 167, 0.35);
}

.btn-primary:hover {
  background: #f3dfba;
  color: #121633;
  box-shadow: 0 6px 20px rgba(234, 211, 167, 0.5);
  transform: translateY(-1px);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(234, 211, 167, 0.5);
  color: var(--uhsep-gold);
}

.btn-outline:hover {
  background: rgba(234, 211, 167, 0.15);
  border-color: var(--uhsep-gold);
  color: #fff;
}

.btn-lg {
  padding: 14px 30px;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  position: relative;
  background: linear-gradient(135deg, #1c2148 0%, #10152e 60%, #0c0f24 100%);
  color: #fff;
  padding: 70px 0 95px;
  border-bottom: 2px solid var(--uhsep-gold);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 1000px;
  height: 550px;
  background: radial-gradient(ellipse, rgba(37, 54, 121, 0.5) 0%, rgba(234, 211, 167, 0.08) 50%, transparent 80%);
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 980px;
  margin: 0 auto;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 22px;
}

.pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: 9999px;
  font-size: 0.76rem;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: #e2e8f0;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.pill-badge.active-pulse::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 8px #10b981;
  animation: pulseGreen 2s infinite;
}

@keyframes pulseGreen {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.pill-badge.gold {
  background: rgba(234, 211, 167, 0.15);
  border-color: var(--uhsep-gold);
  color: var(--uhsep-gold);
}

.pill-badge.highlight {
  background: rgba(37, 54, 121, 0.6);
  border-color: #38bdf8;
  color: #7dd3fc;
}

.hero-title {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 22px;
  color: #ffffff;
}

.hero-title span {
  color: var(--uhsep-gold);
}

.hero-subtitle {
  font-size: 1.14rem;
  color: #cbd5e1;
  max-width: 860px;
  margin: 0 auto 34px;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  margin-bottom: 46px;
  flex-wrap: wrap;
}

.hero-visual {
  position: relative;
  max-width: 1080px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.8), 0 0 0 2px var(--dark-border);
  background: #000;
}

.hero-visual img {
  width: 100%;
  display: block;
  transition: transform var(--transition-normal);
}

.hero-visual:hover img {
  transform: scale(1.01);
}

.hero-visual-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 14px 20px;
  background: linear-gradient(transparent, rgba(16, 21, 46, 0.95));
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.84rem;
  color: #cbd5e1;
}

/* ==========================================================================
   Trust / Accreditation Bar (Rospatent & State Registry)
   ========================================================================== */
.trust-bar {
  background: #141838;
  border-bottom: 1px solid var(--dark-border);
  color: #fff;
  padding: 24px 0;
}

.trust-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 16px;
}

.trust-cert-thumb {
  width: 48px;
  height: 64px;
  object-fit: cover;
  border-radius: 4px;
  border: 1px solid var(--uhsep-gold);
  box-shadow: 0 0 10px rgba(234, 211, 167, 0.3);
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.trust-cert-thumb:hover {
  transform: scale(1.08);
}

.trust-text h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 3px;
}

.trust-text p {
  font-size: 0.8rem;
  color: var(--dark-muted);
}

.trust-link {
  color: var(--uhsep-gold);
  font-size: 0.84rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.trust-link:hover {
  text-decoration: underline;
}

/* ==========================================================================
   Metrics / Stats Bar
   ========================================================================== */
.stats-bar {
  background: #1c2148;
  border-bottom: 1px solid var(--dark-border);
  color: #fff;
  padding: 34px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 24px;
  text-align: center;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 0 12px;
  border-right: 1px solid rgba(234, 211, 167, 0.15);
}

.stat-item:last-child {
  border-right: none;
}

.stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--uhsep-gold);
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.8rem;
  color: #cbd5e1;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

/* ==========================================================================
   Section Styling
   ========================================================================== */
.section {
  padding: 85px 0;
}

.section-dark {
  background: var(--dark-bg);
  color: #fff;
}

.section-light {
  background: var(--light-bg);
  color: var(--light-text);
}

.section-alt {
  background: #ffffff;
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 52px;
}

.section-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--uhsep-blue);
  margin-bottom: 12px;
}

.section-tag.dark {
  color: var(--uhsep-gold);
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--light-muted);
  line-height: 1.6;
}

.section-dark .section-desc {
  color: var(--dark-muted);
}

/* ==========================================================================
   Features Grid
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 28px;
}

.feature-card {
  background: #ffffff;
  border: 1px solid var(--light-border);
  border-top: 4px solid var(--uhsep-blue);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
}

.section-dark .feature-card {
  background: var(--dark-surface-card);
  border-color: var(--dark-border);
  border-top-color: var(--uhsep-gold);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--uhsep-blue);
}

.section-dark .feature-card:hover {
  border-color: var(--uhsep-gold);
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 22px;
  background: var(--uhsep-blue-subtle);
  color: var(--uhsep-blue);
}

.section-dark .feature-icon {
  background: rgba(234, 211, 167, 0.12);
  color: var(--uhsep-gold);
}

.feature-title {
  font-size: 1.22rem;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.feature-text {
  font-size: 0.94rem;
  color: var(--light-muted);
  line-height: 1.55;
  margin-bottom: 18px;
  flex-grow: 1;
}

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

.feature-list {
  list-style: none;
  font-size: 0.88rem;
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-top: 1px solid var(--light-border);
  padding-top: 16px;
}

.section-dark .feature-list {
  border-top-color: var(--dark-border);
}

.feature-list li {
  position: relative;
  padding-left: 20px;
  color: #334155;
}

.section-dark .feature-list li {
  color: #cbd5e1;
}

.feature-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--uhsep-blue);
  font-weight: 700;
}

/* ==========================================================================
   Multilingual Feature Card
   ========================================================================== */
.feature-card-multilang {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
  border: 1px solid var(--light-border);
  border-top: 4px solid var(--uhsep-blue);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.feature-card-multilang:hover {
  box-shadow: var(--shadow-xl);
  border-color: var(--uhsep-blue);
}

.feature-multilang-layout {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 36px;
  align-items: center;
}

@media (max-width: 992px) {
  .feature-multilang-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

.feature-multilang-info {
  display: flex;
  flex-direction: column;
}

.feature-multilang-previews {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.feature-lang-preview-item {
  position: relative;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  overflow: hidden;
  background: #ffffff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  cursor: pointer;
  transition: all 0.25s ease;
}

.feature-lang-preview-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.16);
  border-color: var(--uhsep-blue);
}

.feature-lang-header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  background: #f1f5f9;
  border-bottom: 1px solid #e2e8f0;
  font-size: 0.85rem;
  font-weight: 700;
  color: #1e293b;
}

.feature-lang-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.feature-lang-zoom-hint {
  font-size: 0.75rem;
  color: var(--uhsep-blue);
  font-weight: 600;
}

.feature-lang-img-wrap {
  position: relative;
  overflow: hidden;
  display: block;
  background: #ffffff;
}

.feature-lang-img-wrap img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.3s ease;
}

.feature-lang-preview-item:hover .feature-lang-img-wrap img {
  transform: scale(1.015);
}

.gallery-thumb-contain {
  background: #f8fafc !important;
}

.gallery-thumb-contain img {
  object-fit: contain !important;
  padding: 8px;
}

/* ==========================================================================
   Standards & Methodologies (Interactive Tabs)
   ========================================================================== */
.standards-tabs {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 12px 24px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--dark-border);
  color: #cbd5e1;
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.tab-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border-color: var(--uhsep-gold);
}

.tab-btn.active {
  background: var(--uhsep-gold);
  border-color: var(--uhsep-gold);
  color: #1c2148;
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(234, 211, 167, 0.4);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.standards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 20px;
}

.standard-item {
  background: var(--dark-surface);
  border: 1px solid var(--dark-border);
  border-left: 4px solid var(--uhsep-gold);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: border-color var(--transition-fast);
}

.standard-item:hover {
  border-color: var(--uhsep-gold);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.standard-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 14px;
}

.standard-code {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--uhsep-gold);
  background: rgba(234, 211, 167, 0.12);
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid rgba(234, 211, 167, 0.25);
  flex-shrink: 0;
}

.standard-date {
  font-size: 0.78rem;
  color: #94a3b8;
  text-align: right;
  line-height: 1.35;
}

.standard-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #f8fafc;
  margin-bottom: 10px;
  line-height: 1.4;
}

.standard-desc {
  font-size: 0.88rem;
  color: #cbd5e1;
  line-height: 1.5;
}

/* ==========================================================================
   Event Trees Spotlight
   ========================================================================== */
.event-trees-highlight {
  background: var(--dark-surface);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-xl);
  padding: 44px;
  margin-top: 40px;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
  align-items: center;
}

.et-text h3 {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 16px;
  color: #fff;
}

.et-text p {
  color: #cbd5e1;
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 20px;
}

.et-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.et-badge {
  font-size: 0.78rem;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--dark-border);
  color: #cbd5e1;
}

.et-image-box {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--dark-border);
  box-shadow: var(--shadow-xl);
  cursor: pointer;
}

.et-image-box img {
  width: 100%;
  transition: transform var(--transition-normal);
}

.et-image-box:hover img {
  transform: scale(1.02);
}

/* ==========================================================================
   Gallery Showcase
   ========================================================================== */
.gallery-filters {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 8px 18px;
  border-radius: 9999px;
  background: #f1f5f9;
  border: 1px solid var(--light-border);
  color: var(--light-muted);
  font-size: 0.84rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-transform: uppercase;
}

.filter-btn:hover {
  background: #e2e8f0;
  color: var(--light-text);
}

.filter-btn.active {
  background: var(--uhsep-blue);
  border-color: var(--uhsep-blue);
  color: #fff;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}

.gallery-card {
  background: #ffffff;
  border: 1px solid var(--light-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  cursor: pointer;
  display: flex;
  flex-direction: column;
}

.gallery-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--uhsep-blue);
}

.gallery-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: #0f172a;
}

.gallery-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.gallery-card:hover .gallery-thumb img {
  transform: scale(1.05);
}

.gallery-zoom-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  color: #fff;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.gallery-card:hover .gallery-zoom-badge {
  opacity: 1;
}

.gallery-info {
  padding: 20px;
}

.gallery-tag {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--uhsep-blue);
  margin-bottom: 6px;
  display: block;
}

.gallery-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--light-text);
  margin-bottom: 8px;
}

.gallery-text {
  font-size: 0.86rem;
  color: var(--light-muted);
  line-height: 1.5;
}

/* ==========================================================================
   Licensing Section
   ========================================================================== */
.licensing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
  margin-bottom: 50px;
}

.license-card {
  background: var(--dark-surface-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: border-color var(--transition-fast);
}

.license-card.featured {
  border-color: var(--uhsep-gold);
  box-shadow: 0 0 30px rgba(234, 211, 167, 0.2);
}

.license-featured-badge {
  position: absolute;
  top: -12px;
  right: 24px;
  background: var(--uhsep-gold);
  color: #1c2148;
  padding: 3px 12px;
  border-radius: 9999px;
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
}

.license-type {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.license-for {
  font-size: 0.88rem;
  color: #cbd5e1;
  margin-bottom: 24px;
  min-height: 42px;
}

.license-features {
  list-style: none;
  font-size: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
  flex-grow: 1;
}

.license-features li {
  position: relative;
  padding-left: 24px;
  color: #cbd5e1;
}

.license-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--uhsep-gold);
  font-weight: 700;
}

.server-status-box {
  background: rgba(234, 211, 167, 0.08);
  border: 1px solid rgba(234, 211, 167, 0.35);
  border-radius: var(--radius-lg);
  padding: 24px 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.status-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.status-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 10px #10b981;
  animation: pulseGreen 2s infinite;
}

.status-text h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #f1f5f9;
  margin-bottom: 4px;
}

.status-text p {
  font-size: 0.88rem;
  color: #cbd5e1;
}

.status-text code {
  font-family: var(--font-mono);
  color: var(--uhsep-gold);
  font-weight: 600;
  background: rgba(0, 0, 0, 0.35);
  padding: 2px 6px;
  border-radius: 4px;
}

.server-badge-api {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(234, 211, 167, 0.3);
  color: var(--uhsep-gold);
  font-family: var(--font-mono);
  font-size: 0.84rem;
  font-weight: 600;
}

/* ==========================================================================
   Contact & Demo Form
   ========================================================================== */
.contact-section {
  background: #ffffff;
  border-top: 1px solid var(--light-border);
}

.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: stretch;
}

@media (max-width: 992px) {
  .contact-wrap {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

.contact-card {
  background: #ffffff;
  border: 1px solid var(--light-border);
  border-top: 4px solid var(--uhsep-blue);
  border-radius: var(--radius-xl);
  padding: 36px;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
}

.contact-card.contact-card-highlight {
  border-top-color: var(--uhsep-gold);
  background: linear-gradient(180deg, #ffffff 0%, #fafbfc 100%);
  box-shadow: var(--shadow-lg);
}

.contact-card-header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--light-border);
}

.contact-card-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: #1c2148;
  margin-bottom: 4px;
}

.contact-card-sub {
  font-size: 0.88rem;
  color: var(--light-muted);
  font-weight: 500;
}

.contact-buttons-group {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* ==========================================================================
   Developer Bar (Bottom of Page)
   ========================================================================== */
.developer-bar {
  background: #141838;
  border-top: 2px solid var(--uhsep-gold);
  border-bottom: 1px solid var(--dark-border);
  color: #fff;
  padding: 24px 0;
}

.developer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.developer-info {
  display: flex;
  align-items: center;
  gap: 18px;
}

.developer-logo-img {
  height: 46px;
  width: auto;
  filter: drop-shadow(0 0 8px rgba(234, 211, 167, 0.3));
}

.developer-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 4px;
}

.developer-subtitle {
  font-size: 0.84rem;
  color: #cbd5e1;
}

.developer-links {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.developer-btn {
  background: rgba(234, 211, 167, 0.15);
  border: 1px solid var(--uhsep-gold);
  color: var(--uhsep-gold);
  padding: 9px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.84rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  transition: all var(--transition-fast);
}

.developer-btn:hover {
  background: var(--uhsep-gold);
  color: #141838;
}

.developer-phone {
  color: #e2e8f0;
  font-size: 0.9rem;
  font-weight: 600;
}

.developer-phone:hover {
  color: var(--uhsep-gold);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  background: #10152e;
  color: #cbd5e1;
  padding: 50px 0 30px;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 45px;
}

.footer-col h4 {
  color: var(--uhsep-gold);
  font-size: 0.92rem;
  font-weight: 700;
  margin-bottom: 18px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.88rem;
}

.footer-links a:hover {
  color: var(--uhsep-gold);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  flex-wrap: wrap;
  gap: 16px;
  color: #94a3b8;
}

/* ==========================================================================
   Lightbox Modal
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(16, 21, 46, 0.92);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.modal-overlay.active {
  display: flex;
  opacity: 1;
}

.modal-content {
  position: relative;
  max-width: 1100px;
  width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  background: var(--dark-surface);
  border: 2px solid var(--uhsep-gold);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.9);
}

.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.7);
  border: 1px solid var(--uhsep-gold);
  color: #fff;
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  transition: background var(--transition-fast);
}

.modal-close:hover {
  background: rgba(239, 68, 68, 0.9);
}

.modal-body {
  overflow: auto;
  max-height: 75vh;
  background: #000;
  display: flex;
  justify-content: center;
  align-items: center;
}

.modal-body img {
  max-width: 100%;
  max-height: 75vh;
  object-fit: contain;
}

.modal-footer {
  padding: 16px 24px;
  background: var(--dark-surface);
  border-top: 1px solid var(--dark-border);
  color: #f1f5f9;
}

.modal-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--uhsep-gold);
}

.modal-desc {
  font-size: 0.86rem;
  color: #cbd5e1;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 2.35rem;
  }
  .event-trees-highlight {
    grid-template-columns: 1fr;
  }
  .contact-wrap {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 1200px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #1c2148;
    flex-direction: column;
    padding: 24px;
    border-bottom: 2px solid var(--uhsep-gold);
    gap: 14px;
    max-height: 80vh;
    overflow-y: auto;
  }
  .nav-links.active {
    display: flex;
  }
  .nav-link {
    font-size: 0.95rem;
    padding: 8px 12px;
  }
  .mobile-toggle {
    display: block;
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 1.95rem;
  }
  .hero-subtitle {
    font-size: 1rem;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
  .stat-item {
    border-right: none;
    border-bottom: 1px solid rgba(234, 211, 167, 0.15);
    padding-bottom: 14px;
  }
  .trust-inner, .developer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Substance Database Carousel
   ========================================================================== */
.substance-showcase,
.showcase-carousel-container {
  margin: 32px auto 16px;
  max-width: 980px;
}

.substance-carousel-wrap,
.showcase-carousel-wrap {
  position: relative;
  background: #0f1322;
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.35);
}

.substance-carousel,
.showcase-carousel {
  position: relative;
  width: 100%;
  height: 520px;
  overflow: hidden;
}

@media (max-width: 992px) {
  .substance-carousel,
  .showcase-carousel {
    height: 420px;
  }
}

@media (max-width: 768px) {
  .substance-carousel,
  .showcase-carousel {
    height: 300px;
  }
}

.substance-slide,
.showcase-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.6s ease-in-out, transform 0.6s ease-in-out;
  transform: scale(0.98);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0b0e1b;
}

.substance-slide.active,
.showcase-slide.active {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
  z-index: 2;
}

.substance-slide img,
.showcase-slide img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  user-select: none;
}

.slide-badge {
  position: absolute;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(16, 21, 46, 0.92);
  border: 1px solid var(--uhsep-gold);
  color: #fff;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: 20px;
  backdrop-filter: blur(8px);
  pointer-events: none;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.45);
  white-space: nowrap;
  max-width: 88%;
  overflow: hidden;
  text-overflow: ellipsis;
  z-index: 3;
}

.carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(28, 33, 72, 0.88);
  border: 1px solid rgba(234, 211, 167, 0.4);
  color: var(--uhsep-gold);
  font-size: 1.8rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: all var(--transition-fast);
  padding-bottom: 4px;
  user-select: none;
}

.carousel-arrow:hover {
  background: var(--uhsep-blue);
  border-color: var(--uhsep-gold);
  color: #fff;
  transform: translateY(-50%) scale(1.12);
  box-shadow: 0 0 12px rgba(234, 211, 167, 0.5);
}

.carousel-arrow.prev {
  left: 14px;
}

.carousel-arrow.next {
  right: 14px;
}

.carousel-dots {
  position: absolute;
  bottom: 12px;
  right: 20px;
  display: flex;
  gap: 8px;
  z-index: 10;
}

.dot-btn {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.35);
  border: 1px solid rgba(0, 0, 0, 0.2);
  cursor: pointer;
  transition: all var(--transition-fast);
  padding: 0;
}

.dot-btn:hover {
  background: rgba(234, 211, 167, 0.7);
}

.dot-btn.active {
  background: var(--uhsep-gold);
  transform: scale(1.28);
  box-shadow: 0 0 8px rgba(234, 211, 167, 0.9);
}

/* ==========================================================================
   Personnel Management Section
   ========================================================================== */
.personnel-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.personnel-tab-btn {
  padding: 10px 24px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-md);
  color: #cbd5e1;
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 8px;
}

.personnel-tab-btn:hover {
  background: rgba(234, 211, 167, 0.12);
  border-color: var(--uhsep-gold);
  color: #fff;
}

.personnel-tab-btn.active {
  background: var(--uhsep-gold);
  border-color: var(--uhsep-gold);
  color: #1c2148;
  box-shadow: 0 4px 16px rgba(234, 211, 167, 0.35);
}

.personnel-tab-panel {
  display: none;
  animation: fadeIn 0.35s ease-in-out;
}

.personnel-tab-panel.active {
  display: block;
}

.personnel-showcase-box {
  background: var(--dark-surface);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
}

.personnel-img-wrap {
  position: relative;
  cursor: pointer;
  background: #0b0e1b;
  overflow: hidden;
  border-bottom: 1px solid var(--dark-border);
}

.personnel-img-wrap img {
  width: 100%;
  display: block;
  transition: transform var(--transition-normal);
}

.personnel-img-wrap:hover img {
  transform: scale(1.015);
}

.personnel-img-wrap .slide-badge {
  bottom: 18px;
}

.personnel-grid-details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  padding: 32px 36px;
  background: var(--dark-surface-card);
}

.personnel-detail-card {
  border-left: 3px solid var(--uhsep-gold);
  padding-left: 18px;
}

.personnel-detail-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.personnel-detail-card p {
  font-size: 0.88rem;
  color: #cbd5e1;
  line-height: 1.55;
  margin: 0;
}

/* ==========================================================================
   Hazard Factors Showcase Section
   ========================================================================== */
.hazard-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.hazard-tab-btn {
  padding: 10px 22px;
  background: #f8fafc;
  border: 1px solid var(--light-border);
  border-radius: var(--radius-md);
  color: var(--light-muted);
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 8px;
}

.hazard-tab-btn:hover {
  background: #f1f5f9;
  border-color: var(--uhsep-blue);
  color: var(--light-text);
}

.hazard-tab-btn.active {
  background: var(--uhsep-blue);
  border-color: var(--uhsep-blue);
  color: #fff;
  box-shadow: 0 4px 14px rgba(37, 54, 121, 0.3);
}

.hazard-tab-panel {
  display: none;
  animation: fadeIn 0.35s ease-in-out;
}

.hazard-tab-panel.active {
  display: block;
}

.hazard-showcase-box {
  background: #ffffff;
  border: 1px solid var(--light-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  margin-bottom: 40px;
}

.hazard-img-wrap {
  position: relative;
  cursor: pointer;
  background: #0f1322;
  overflow: hidden;
  border-bottom: 1px solid var(--light-border);
}

.hazard-img-wrap img {
  width: 100%;
  display: block;
  transition: transform var(--transition-normal);
}

.hazard-img-wrap:hover img {
  transform: scale(1.015);
}

.hazard-img-wrap .slide-badge {
  bottom: 18px;
}

.hazard-grid-details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  padding: 30px 36px;
  background: #f8fafc;
}

.hazard-detail-card {
  border-left: 3px solid var(--uhsep-blue);
  padding-left: 18px;
}

.hazard-detail-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--light-text);
  margin-bottom: 8px;
}

.hazard-detail-card p {
  font-size: 0.88rem;
  color: var(--light-muted);
  line-height: 1.55;
  margin: 0;
}

/* ==========================================================================
   Integral Risk Factors Showcase Section
   ========================================================================== */
.risk-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.risk-tab-btn {
  padding: 10px 22px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-md);
  color: #cbd5e1;
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 8px;
}

.risk-tab-btn:hover {
  background: rgba(234, 211, 167, 0.12);
  border-color: var(--uhsep-gold);
  color: #fff;
}

.risk-tab-btn.active {
  background: var(--uhsep-gold);
  border-color: var(--uhsep-gold);
  color: #1c2148;
  box-shadow: 0 4px 16px rgba(234, 211, 167, 0.35);
}

.risk-tab-panel {
  display: none;
  animation: fadeIn 0.35s ease-in-out;
}

.risk-tab-panel.active {
  display: block;
}

.risk-showcase-box {
  background: var(--dark-surface);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
}

.risk-img-wrap {
  position: relative;
  cursor: pointer;
  background: #0b0e1b;
  overflow: hidden;
  border-bottom: 1px solid var(--dark-border);
}

.risk-img-wrap img {
  width: 100%;
  display: block;
  transition: transform var(--transition-normal);
}

.risk-img-wrap:hover img {
  transform: scale(1.015);
}

.risk-img-wrap .slide-badge {
  bottom: 18px;
}

.risk-grid-details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  padding: 32px 36px;
  background: var(--dark-surface-card);
}

.risk-detail-card {
  border-left: 3px solid var(--uhsep-gold);
  padding-left: 18px;
}

.risk-detail-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.risk-detail-card p {
  font-size: 0.88rem;
  color: #cbd5e1;
  line-height: 1.55;
  margin: 0;
}

/* Two-column layout for dialog screenshot tab */
.risk-dialog-grid {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 32px;
  align-items: center;
  padding: 28px 36px;
  background: var(--dark-surface-card);
}

@media (max-width: 900px) {
  .risk-dialog-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

.risk-dialog-img {
  background: #0b0e1b;
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  cursor: pointer;
}

.risk-dialog-img img {
  width: 100%;
  display: block;
}

/* ==========================================================================
   Blast Resistance Section
   ========================================================================== */
.blast-controls-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 24px;
}

.blast-pressure-selector {
  display: flex;
  gap: 8px;
  background: rgba(255, 255, 255, 0.05);
  padding: 4px;
  border-radius: var(--radius-md);
  border: 1px solid var(--dark-border);
}

.blast-p-btn {
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: 1px solid transparent;
  color: #cbd5e1;
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.blast-p-btn:hover {
  color: #fff;
  background: rgba(234, 211, 167, 0.12);
}

.blast-p-btn.active {
  background: var(--uhsep-gold);
  color: #1c2148;
  border-color: var(--uhsep-gold);
  box-shadow: 0 2px 10px rgba(234, 211, 167, 0.35);
}

.blast-view-tabs {
  display: flex;
  gap: 10px;
}

.blast-view-btn {
  padding: 9px 20px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-md);
  color: #cbd5e1;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 8px;
}

.blast-view-btn:hover {
  background: rgba(234, 211, 167, 0.12);
  border-color: var(--uhsep-gold);
  color: #fff;
}

.blast-view-btn.active {
  background: var(--uhsep-blue);
  border-color: var(--uhsep-gold);
  color: #fff;
  box-shadow: 0 4px 14px rgba(37, 54, 121, 0.4);
}

.blast-showcase-box {
  background: var(--dark-surface);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
}

.blast-view-panel {
  display: none;
  animation: fadeIn 0.35s ease-in-out;
}

.blast-view-panel.active {
  display: block;
}

.blast-pressure-slide {
  display: none;
  animation: fadeIn 0.3s ease-in-out;
}

.blast-pressure-slide.active {
  display: block;
}

.blast-img-wrap {
  position: relative;
  cursor: pointer;
  background: #0b0e1b;
  overflow: hidden;
  border-bottom: 1px solid var(--dark-border);
}

.blast-img-wrap img {
  width: 100%;
  display: block;
  transition: transform var(--transition-normal);
}

.blast-img-wrap:hover img {
  transform: scale(1.015);
}

.blast-img-wrap .slide-badge {
  bottom: 18px;
}

.blast-grid-details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  padding: 32px 36px;
  background: var(--dark-surface-card);
}

.blast-detail-card {
  border-left: 3px solid var(--uhsep-gold);
  padding-left: 18px;
}

.blast-detail-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.blast-detail-card p {
  font-size: 0.88rem;
  color: #cbd5e1;
  line-height: 1.55;
  margin: 0;
}

/* ==========================================================================
   Equipment Library & Scenario Presets Section
   ========================================================================== */
.equipment-grid-showcase {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 28px;
  margin-top: 36px;
}

.equipment-card {
  background: var(--dark-surface-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), border-color var(--transition-normal);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

.equipment-card:hover {
  transform: translateY(-4px);
  border-color: var(--uhsep-gold);
}

.equipment-header {
  padding: 24px 28px 16px;
  display: flex;
  align-items: center;
  gap: 14px;
  border-bottom: 1px solid var(--dark-border);
  background: var(--dark-surface);
}

.equipment-icon-badge {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-md);
  background: rgba(234, 211, 167, 0.12);
  color: var(--uhsep-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}

.equipment-header-text h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}

.equipment-header-text span {
  font-size: 0.8rem;
  color: #94a3b8;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.equipment-body {
  padding: 24px 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  flex-grow: 1;
}

.equipment-body p {
  font-size: 0.9rem;
  color: #cbd5e1;
  line-height: 1.55;
  margin: 0;
}

.equipment-img-container {
  background: #0b0e1b;
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  min-height: 240px;
  position: relative;
}

.equipment-img-container img {
  max-width: 100%;
  max-height: 220px;
  object-fit: contain;
  transition: transform var(--transition-fast);
}

.equipment-img-container:hover img {
  transform: scale(1.03);
}

.equipment-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.equipment-tag-pill {
  font-size: 0.76rem;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--dark-border);
  color: #cbd5e1;
}

.equipment-preset-box {
  background: rgba(16, 21, 46, 0.6);
  border-left: 3px solid var(--uhsep-gold);
  padding: 12px 16px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.84rem;
  color: #cbd5e1;
  line-height: 1.5;
}

.equipment-preset-box strong {
  color: var(--uhsep-gold);
}

/* ==========================================================================
   Project Presets & Calculation Methodology Section
   ========================================================================== */
.presets-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.preset-tab-btn {
  padding: 10px 24px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-md);
  color: #cbd5e1;
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 8px;
}

.preset-tab-btn:hover {
  background: rgba(234, 211, 167, 0.12);
  border-color: var(--uhsep-gold);
  color: #fff;
}

.preset-tab-btn.active {
  background: var(--uhsep-gold);
  border-color: var(--uhsep-gold);
  color: #1c2148;
  box-shadow: 0 4px 16px rgba(234, 211, 167, 0.35);
}

.preset-tab-panel {
  display: none;
  animation: fadeIn 0.35s ease-in-out;
}

.preset-tab-panel.active {
  display: block;
}

.preset-showcase-box {
  background: var(--dark-surface);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
}

.preset-img-wrap {
  position: relative;
  cursor: pointer;
  background: #0b0e1b;
  overflow: hidden;
  border-bottom: 1px solid var(--dark-border);
}

.preset-img-wrap img {
  width: 100%;
  display: block;
  transition: transform var(--transition-normal);
}

.preset-img-wrap:hover img {
  transform: scale(1.015);
}

.preset-img-wrap .slide-badge {
  bottom: 18px;
}

.preset-grid-details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  padding: 32px 36px;
  background: var(--dark-surface-card);
}

.preset-detail-card {
  border-left: 3px solid var(--uhsep-gold);
  padding-left: 18px;
}

.preset-detail-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.preset-detail-card p {
  font-size: 0.88rem;
  color: #cbd5e1;
  line-height: 1.55;
  margin: 0;
}

/* ==========================================================================
   Ignition Probability Database Section
   ========================================================================== */
.ignition-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.ignition-tab-btn {
  padding: 10px 24px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-md);
  color: #cbd5e1;
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 8px;
}

.ignition-tab-btn:hover {
  background: rgba(234, 211, 167, 0.12);
  border-color: var(--uhsep-gold);
  color: #fff;
}

.ignition-tab-btn.active {
  background: var(--uhsep-gold);
  border-color: var(--uhsep-gold);
  color: #1c2148;
  box-shadow: 0 4px 16px rgba(234, 211, 167, 0.35);
}

.ignition-tab-panel {
  display: none;
  animation: fadeIn 0.35s ease-in-out;
}

.ignition-tab-panel.active {
  display: block;
}

.ignition-showcase-box {
  background: var(--dark-surface);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
}

.ignition-img-wrap {
  position: relative;
  cursor: pointer;
  background: #0b0e1b;
  overflow: hidden;
  border-bottom: 1px solid var(--dark-border);
}

.ignition-img-wrap img {
  width: 100%;
  display: block;
  transition: transform var(--transition-normal);
}

.ignition-img-wrap:hover img {
  transform: scale(1.015);
}

.ignition-img-wrap .slide-badge {
  bottom: 18px;
}

.ignition-grid-details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  padding: 32px 36px;
  background: var(--dark-surface-card);
}

.ignition-detail-card {
  border-left: 3px solid var(--uhsep-gold);
  padding-left: 18px;
}

.ignition-detail-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.ignition-detail-card p {
  font-size: 0.88rem;
  color: #cbd5e1;
  line-height: 1.55;
  margin: 0;
}

/* ==========================================================================
   Dispersion Physical Phenomena Section (Часть 1: Дрейф облаков)
   ========================================================================== */
.dispersion-tabs {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.dispersion-tab-btn {
  padding: 10px 20px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-md);
  color: #cbd5e1;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 8px;
}

.dispersion-tab-btn:hover {
  background: rgba(234, 211, 167, 0.12);
  border-color: var(--uhsep-gold);
  color: #fff;
}

.dispersion-tab-btn.active {
  background: var(--uhsep-gold);
  border-color: var(--uhsep-gold);
  color: #1c2148;
  box-shadow: 0 4px 16px rgba(234, 211, 167, 0.35);
}

.dispersion-tab-panel {
  display: none;
  animation: fadeIn 0.35s ease-in-out;
}

.dispersion-tab-panel.active {
  display: block;
}

.dispersion-showcase-box {
  background: var(--dark-surface);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
}

.dispersion-img-wrap {
  position: relative;
  cursor: pointer;
  background: #0b0e1b;
  overflow: hidden;
  border-bottom: 1px solid var(--dark-border);
}

.dispersion-img-wrap img {
  width: 100%;
  display: block;
  transition: transform var(--transition-normal);
}

.dispersion-img-wrap:hover img {
  transform: scale(1.015);
}

.dispersion-img-wrap .slide-badge {
  bottom: 18px;
}

.dispersion-grid-details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  padding: 32px 36px;
  background: var(--dark-surface-card);
}

.dispersion-detail-card {
  border-left: 3px solid var(--uhsep-gold);
  padding-left: 18px;
}

.dispersion-detail-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.dispersion-detail-card p {
  font-size: 0.88rem;
  color: #cbd5e1;
  line-height: 1.55;
  margin: 0;
}

/* ==========================================================================
   Source Models Section (Модели источников выброса)
   ========================================================================== */
.source-tabs {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.source-tab-btn {
  padding: 10px 20px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-md);
  color: #cbd5e1;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 8px;
}

.source-tab-btn:hover {
  background: rgba(234, 211, 167, 0.12);
  border-color: var(--uhsep-gold);
  color: #fff;
}

.source-tab-btn.active {
  background: var(--uhsep-gold);
  border-color: var(--uhsep-gold);
  color: #1c2148;
  box-shadow: 0 4px 16px rgba(234, 211, 167, 0.35);
}

.source-tab-panel {
  display: none;
  animation: fadeIn 0.35s ease-in-out;
}

.source-tab-panel.active {
  display: block;
}

.source-showcase-box {
  background: var(--dark-surface);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
}

.source-sub-toggle {
  display: flex;
  justify-content: flex-start;
  gap: 8px;
  padding: 14px 24px;
  background: rgba(16, 21, 46, 0.8);
  border-bottom: 1px solid var(--dark-border);
}

.source-sub-btn {
  padding: 6px 16px;
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid var(--dark-border);
  color: #cbd5e1;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.source-sub-btn:hover {
  background: rgba(234, 211, 167, 0.15);
  color: #fff;
}

.source-sub-btn.active {
  background: var(--uhsep-gold);
  border-color: var(--uhsep-gold);
  color: #1c2148;
}

.source-sub-view {
  display: none;
}

.source-sub-view.active {
  display: block;
}

.source-img-wrap {
  position: relative;
  cursor: pointer;
  background: #0b0e1b;
  overflow: hidden;
  border-bottom: 1px solid var(--dark-border);
}

.source-img-wrap img {
  width: 100%;
  display: block;
  transition: transform var(--transition-normal);
}

.source-img-wrap:hover img {
  transform: scale(1.015);
}

.source-img-wrap .slide-badge {
  bottom: 18px;
}

.source-grid-details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  padding: 32px 36px;
  background: var(--dark-surface-card);
}

.source-detail-card {
  border-left: 3px solid var(--uhsep-gold);
  padding-left: 18px;
}

.source-detail-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.source-detail-card p {
  font-size: 0.88rem;
  color: #cbd5e1;
  line-height: 1.55;
  margin: 0;
}

/* ==========================================================================
   Hazard Effects Models Section (Модели поражающих факторов аварии)
   ========================================================================== */
.haz-effect-tabs {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.haz-effect-tab-btn {
  padding: 10px 20px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-md);
  color: #cbd5e1;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 8px;
}

.haz-effect-tab-btn:hover {
  background: rgba(234, 211, 167, 0.12);
  border-color: var(--uhsep-gold);
  color: #fff;
}

.haz-effect-tab-btn.active {
  background: var(--uhsep-gold);
  border-color: var(--uhsep-gold);
  color: #1c2148;
  box-shadow: 0 4px 16px rgba(234, 211, 167, 0.35);
}

.haz-effect-tab-panel {
  display: none;
  animation: fadeIn 0.35s ease-in-out;
}

.haz-effect-tab-panel.active {
  display: block;
}

.haz-effect-showcase-box {
  background: var(--dark-surface);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
}

.haz-effect-img-wrap {
  position: relative;
  cursor: pointer;
  background: #0b0e1b;
  overflow: hidden;
  border-bottom: 1px solid var(--dark-border);
}

.haz-effect-img-wrap img {
  width: 100%;
  display: block;
  transition: transform var(--transition-normal);
}

.haz-effect-img-wrap:hover img {
  transform: scale(1.015);
}

.haz-effect-img-wrap .slide-badge {
  bottom: 18px;
}

.haz-effect-grid-details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  padding: 32px 36px;
  background: var(--dark-surface-card);
}

.haz-effect-detail-card {
  border-left: 3px solid var(--uhsep-gold);
  padding-left: 18px;
}

.haz-effect-detail-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.haz-effect-detail-card p {
  font-size: 0.88rem;
  color: #cbd5e1;
  line-height: 1.55;
  margin: 0;
}

/* ==========================================================================
   Event Trees Tabs
   ========================================================================== */
.event-tree-tabs {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.event-tree-tab-btn {
  padding: 8px 18px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-md);
  color: #cbd5e1;
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 6px;
}

.event-tree-tab-btn:hover {
  background: rgba(234, 211, 167, 0.12);
  border-color: var(--uhsep-gold);
  color: #fff;
}

.event-tree-tab-btn.active {
  background: var(--uhsep-gold);
  border-color: var(--uhsep-gold);
  color: #1c2148;
  box-shadow: 0 4px 16px rgba(234, 211, 167, 0.35);
}

.event-tree-panel {
  display: none;
  animation: fadeIn 0.35s ease-in-out;
}

.event-tree-panel.active {
  display: block;
}

/* ==========================================================================
   Current Version and Updates (блок «Версия и обновления», данные из js/main.js)
   ========================================================================== */
#version[hidden],
#version [hidden] { display: none !important; }   /* .btn и др. задают display и перебивают атрибут hidden */

.version-card {
  max-width: 860px;
  margin: 0 auto;
  background: var(--light-surface);
  border: 1px solid var(--light-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-md);
}

.version-card-beta {
  box-shadow: none;
  background: var(--light-bg);
}

.version-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
  margin-bottom: 18px;
}

.version-badge {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 9999px;
  background: var(--uhsep-blue);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.version-card-beta .version-badge {
  background: var(--accent-orange);
}

.version-number {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--uhsep-blue-dark);
}

.version-state {
  color: var(--light-muted);
}

.version-sub {
  margin: 20px 0 8px;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--uhsep-blue);
}

.version-notes {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  max-height: 280px;
  overflow-y: auto;
  padding: 14px 16px;
  background: var(--light-bg);
  border: 1px solid var(--light-border);
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  line-height: 1.55;
}

.version-card-beta .version-notes {
  background: var(--light-surface);
}

.version-hash-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
}

.version-hash {
  flex: 1 1 360px;
  min-width: 0;
  padding: 10px 12px;
  background: var(--light-bg);
  border: 1px solid var(--light-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  word-break: break-all;
  user-select: all;
}

.version-copy {
  padding: 8px 18px;
  font-size: 0.8rem;
}

.version-hint,
.version-meta,
.version-warn {
  margin-top: 10px;
  font-size: 0.85rem;
  color: var(--light-muted);
  line-height: 1.5;
}

.version-hint code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background: var(--light-bg);
  padding: 1px 5px;
  border-radius: 4px;
}

.version-beta {
  max-width: 860px;
  margin: 20px auto 0;
}

.version-beta > summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--uhsep-blue);
  padding: 6px 2px;
}

.version-beta > summary:hover {
  color: var(--uhsep-blue-light);
}

.version-beta .version-card {
  margin-top: 12px;
}

@media (max-width: 768px) {
  .version-card {
    padding: 22px 18px;
  }
  .version-number {
    font-size: 1.15rem;
  }
  .version-copy {
    width: 100%;
  }
}