/* ============================================================
   GILT — Global Styles v2.0 — Premium Design
   Brand: Gold #C5A028 → Silver #A0A0A0 gradient, Slate #2D3339
   ============================================================ */

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

:root {
  --gold: #C5A028;
  --gold-light: #D4B84A;
  --gold-glow: rgba(197, 160, 40, 0.4);
  --silver: #A0A0A0;
  --silver-light: #C0C0C0;
  --slate: #2D3339;
  --slate-dark: #1A1E23;
  --slate-darker: #13161A;
  --slate-light: #3A4249;
  --white: #FFFFFF;
  --off-white: #F5F5F5;
  --text: #E8E8E8;
  --text-muted: #8B95A3;
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --max-width: 1200px;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  --border-subtle: 1px solid rgba(197, 160, 40, 0.08);
  --glow-gold: 0 0 30px rgba(197, 160, 40, 0.15);
  --glow-gold-strong: 0 0 60px rgba(197, 160, 40, 0.25);
}

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

body {
  font-family: var(--font-main);
  background: var(--slate-darker);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a { color: var(--gold-light); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--gold); }

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

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 2rem; }

/* --- Typography --- */
h1, h2, h3, h4 { font-weight: 700; line-height: 1.15; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.8rem, 5.5vw, 4.5rem); font-weight: 800; }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }

.gradient-text {
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-light) 50%, var(--silver-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 1px;
  background: var(--gold);
}

/* --- Navigation --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(19, 22, 26, 0.7);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid rgba(197, 160, 40, 0.06);
  transition: all var(--transition);
}

.navbar.scrolled {
  background: rgba(19, 22, 26, 0.92);
  border-bottom-color: rgba(197, 160, 40, 0.12);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

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

.nav-logo {
  display: flex;
  align-items: center;
}

.nav-logo img {
  height: 52px;
  width: auto;
  border-radius: 0;
  transition: opacity var(--transition);
  object-fit: contain;
}

.nav-logo:hover img { opacity: 0.85; }

.nav-links {
  display: flex;
  list-style: none;
  gap: 2.5rem;
  align-items: center;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: color var(--transition);
  position: relative;
  padding: 0.25rem 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  transition: all var(--transition);
  transform: translateX(-50%);
  border-radius: 1px;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--white);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-cta {
  padding: 0.6rem 1.5rem !important;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  color: var(--slate-darker) !important;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  transition: all var(--transition);
  box-shadow: 0 2px 12px rgba(197, 160, 40, 0.2);
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(197, 160, 40, 0.35);
  color: var(--slate-darker) !important;
}

.nav-cta::after { display: none !important; }

/* Mobile menu */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  position: relative;
  z-index: 10;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  margin: 5px 0;
  transition: all var(--transition);
  border-radius: 2px;
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Hero --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 76px;
}

/* Animated grid canvas sits behind everything */
#hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  opacity: 0.6;
}

.hero::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -15%;
  width: 900px;
  height: 900px;
  background: radial-gradient(circle, rgba(197, 160, 40, 0.07) 0%, transparent 60%);
  pointer-events: none;
  z-index: 1;
  animation: float 12s ease-in-out infinite;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -20%;
  left: -10%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(160, 160, 160, 0.04) 0%, transparent 60%);
  pointer-events: none;
  z-index: 1;
  animation: float 15s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(30px, -20px); }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 750px;
}

.hero-content h1 {
  margin-bottom: 1.5rem;
  line-height: 1.08;
}

.hero-content p {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  max-width: 580px;
  line-height: 1.8;
}

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

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 2.2rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.92rem;
  transition: all var(--transition);
  border: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  color: var(--slate-darker);
  box-shadow: 0 2px 16px rgba(197, 160, 40, 0.25);
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  transition: left 0.5s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(197, 160, 40, 0.4);
  color: var(--slate-darker);
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid rgba(160, 160, 160, 0.3);
  backdrop-filter: blur(8px);
}

.btn-outline:hover {
  border-color: var(--gold);
  color: var(--gold);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(197, 160, 40, 0.1);
}

/* --- Sections --- */
.section {
  padding: 8rem 0;
  position: relative;
}

.section-dark {
  background: var(--slate-dark);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 5rem;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-top: 1.25rem;
  line-height: 1.8;
}

/* --- Decorative line between sections --- */
.section-divider {
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--silver));
  margin: 0 auto 1.5rem;
  border-radius: 1px;
}

/* --- Cards --- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.5rem;
}

.card {
  background: linear-gradient(145deg, rgba(45, 51, 57, 0.8), rgba(26, 30, 35, 0.9));
  border: 1px solid rgba(197, 160, 40, 0.06);
  border-radius: 16px;
  padding: 2.25rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
}

.section-dark .card {
  background: linear-gradient(145deg, rgba(26, 30, 35, 0.9), rgba(19, 22, 26, 0.9));
}

/* Animated gradient border on hover */
.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), var(--silver-light), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

/* Subtle inner glow on hover */
.card::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at center, rgba(197, 160, 40, 0.03), transparent 50%);
  opacity: 0;
  transition: opacity var(--transition-slow);
  pointer-events: none;
}

.card:hover {
  transform: translateY(-6px);
  border-color: rgba(197, 160, 40, 0.15);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4), var(--glow-gold);
}

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

.card:hover::after {
  opacity: 1;
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(197, 160, 40, 0.12), rgba(197, 160, 40, 0.04));
  border: 1px solid rgba(197, 160, 40, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  transition: all var(--transition);
}

.card:hover .card-icon {
  background: linear-gradient(135deg, rgba(197, 160, 40, 0.2), rgba(197, 160, 40, 0.08));
  box-shadow: 0 0 20px rgba(197, 160, 40, 0.15);
}

.card-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--gold);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.card h3 {
  margin-bottom: 0.75rem;
  color: var(--white);
  font-size: 1.15rem;
}

.card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
}

.card .tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--gold);
  background: rgba(197, 160, 40, 0.08);
  padding: 0.3rem 0.8rem;
  border-radius: 100px;
  margin-top: 1.25rem;
  border: 1px solid rgba(197, 160, 40, 0.1);
}

/* --- White Paper Download Cards --- */
a.card-download {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  cursor: pointer;
}

a.card-download h3 { color: var(--white); }
a.card-download p { color: var(--text-muted); }

.download-label {
  display: inline-block;
  margin-top: auto;
  padding-top: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--gold);
  transition: all var(--transition);
}

a.card-download:hover .download-label {
  color: var(--gold-light);
  letter-spacing: 0.5px;
}

a.card-download:hover {
  color: inherit;
}

/* --- Pipeline / Process --- */
.pipeline {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  position: relative;
}

.pipeline::before {
  content: '';
  position: absolute;
  top: 36px;
  left: 20%;
  right: 20%;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light), var(--silver));
  opacity: 0.4;
}

.pipeline-step {
  text-align: center;
  position: relative;
  z-index: 1;
}

.pipeline-step .step-number {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--slate-darker);
  border: 2px solid rgba(197, 160, 40, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--gold);
  transition: all var(--transition);
  position: relative;
}

/* Pulse ring animation */
.pipeline-step .step-number::after {
  content: '';
  position: absolute;
  top: -6px;
  left: -6px;
  right: -6px;
  bottom: -6px;
  border-radius: 50%;
  border: 1px solid rgba(197, 160, 40, 0.15);
  animation: pulse-ring 3s ease-in-out infinite;
}

.pipeline-step:nth-child(2) .step-number::after { animation-delay: 0.5s; }
.pipeline-step:nth-child(3) .step-number::after { animation-delay: 1s; }

@keyframes pulse-ring {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.15); opacity: 0; }
}

.pipeline-step:hover .step-number {
  border-color: var(--gold);
  box-shadow: 0 0 30px rgba(197, 160, 40, 0.2);
  transform: scale(1.05);
}

.pipeline-step h3 {
  color: var(--white);
  margin-bottom: 0.75rem;
  font-size: 1.25rem;
}

.pipeline-step p {
  color: var(--text-muted);
  font-size: 0.9rem;
  max-width: 280px;
  margin: 0 auto;
  line-height: 1.7;
}

/* --- Stats --- */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-top: 4rem;
}

.stat { text-align: center; }

.stat-number {
  font-size: 3rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--gold), var(--silver-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

.stat-label {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 0.25rem;
}

/* --- Team --- */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.team-card {
  background: linear-gradient(145deg, rgba(45, 51, 57, 0.8), rgba(26, 30, 35, 0.9));
  border: 1px solid rgba(197, 160, 40, 0.06);
  border-radius: 16px;
  padding: 2.5rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.team-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--silver));
  opacity: 0;
  transition: opacity var(--transition);
}

.team-card:hover {
  border-color: rgba(197, 160, 40, 0.15);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4), var(--glow-gold);
  transform: translateY(-4px);
}

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

.team-card h3 {
  color: var(--white);
  margin-bottom: 0.25rem;
  font-size: 1.3rem;
}

.team-card .role {
  color: var(--gold);
  font-size: 0.88rem;
  font-weight: 500;
  margin-bottom: 1.25rem;
  font-family: var(--font-mono);
}

.team-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.8;
}

/* --- Security Features --- */
.security-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.5rem;
}

.security-item {
  display: flex;
  gap: 1.25rem;
  padding: 1.75rem;
  background: linear-gradient(145deg, rgba(45, 51, 57, 0.6), rgba(26, 30, 35, 0.8));
  border-radius: 14px;
  border: 1px solid rgba(197, 160, 40, 0.06);
  transition: all var(--transition);
}

.section-dark .security-item {
  background: linear-gradient(145deg, rgba(26, 30, 35, 0.8), rgba(19, 22, 26, 0.9));
}

.security-item:hover {
  border-color: rgba(197, 160, 40, 0.15);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.security-item .icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(197, 160, 40, 0.12), rgba(197, 160, 40, 0.04));
  border: 1px solid rgba(197, 160, 40, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
}

.security-item .icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--gold);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.security-item h4 {
  color: var(--white);
  margin-bottom: 0.5rem;
  font-size: 1.02rem;
}

.security-item p {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.7;
}

/* --- Contact --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

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

.contact-item .icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(197, 160, 40, 0.12), rgba(197, 160, 40, 0.04));
  border: 1px solid rgba(197, 160, 40, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-item .icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--gold);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.contact-item h4 {
  color: var(--white);
  font-size: 0.95rem;
  margin-bottom: 0.3rem;
}

.contact-item p, .contact-item a {
  color: var(--text-muted);
  font-size: 0.92rem;
}

.contact-item a:hover {
  color: var(--gold);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  letter-spacing: 0.02em;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.9rem 1.15rem;
  background: rgba(45, 51, 57, 0.5);
  border: 1px solid rgba(160, 160, 160, 0.12);
  border-radius: 10px;
  color: var(--white);
  font-family: var(--font-main);
  font-size: 0.92rem;
  transition: all var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(139, 149, 163, 0.5);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--gold);
  background: rgba(45, 51, 57, 0.7);
  box-shadow: 0 0 0 3px rgba(197, 160, 40, 0.1);
}

.form-group textarea { resize: vertical; min-height: 130px; }

/* --- Footer --- */
.footer {
  border-top: 1px solid rgba(197, 160, 40, 0.06);
  padding: 3.5rem 0;
  background: var(--slate-darker);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-logo {
  display: inline-block;
}

.footer-logo img {
  height: 42px;
  border-radius: 0;
  opacity: 0.5;
  transition: opacity var(--transition);
}

.footer-logo:hover img { opacity: 0.8; }

.footer-text {
  color: rgba(139, 149, 163, 0.6);
  font-size: 0.82rem;
}

.footer-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.85rem;
  transition: color var(--transition);
}

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

/* --- Animations --- */
.fade-in {
  opacity: 0;
  transform: translateY(35px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered animations for children */
.stagger-children .fade-in:nth-child(1) { transition-delay: 0s; }
.stagger-children .fade-in:nth-child(2) { transition-delay: 0.1s; }
.stagger-children .fade-in:nth-child(3) { transition-delay: 0.2s; }
.stagger-children .fade-in:nth-child(4) { transition-delay: 0.25s; }
.stagger-children .fade-in:nth-child(5) { transition-delay: 0.3s; }
.stagger-children .fade-in:nth-child(6) { transition-delay: 0.35s; }
.stagger-children .fade-in:nth-child(7) { transition-delay: 0.4s; }
.stagger-children .fade-in:nth-child(8) { transition-delay: 0.45s; }
.stagger-children .fade-in:nth-child(9) { transition-delay: 0.5s; }

/* --- CTA Banner --- */
.cta-banner {
  background: linear-gradient(135deg, rgba(197, 160, 40, 0.1) 0%, rgba(160, 160, 160, 0.03) 100%);
  border: 1px solid rgba(197, 160, 40, 0.12);
  border-radius: 20px;
  padding: 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(197, 160, 40, 0.04), transparent 50%);
  pointer-events: none;
}

.cta-banner h2 { margin-bottom: 1rem; position: relative; }
.cta-banner p { color: var(--text-muted); margin-bottom: 2rem; font-size: 1.05rem; position: relative; line-height: 1.8; }

/* --- Use Case Timeline Layout --- */
.uc-timeline {
  position: relative;
}

.uc-item {
  display: flex;
  gap: 2.5rem;
  margin-bottom: 0;
}

.uc-item:last-child { margin-bottom: 0; }

/* Number column with connecting line */
.uc-item-number {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
  width: 64px;
}

.uc-num {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--gold);
  width: 64px;
  height: 64px;
  border-radius: 16px;
  border: 2px solid rgba(197, 160, 40, 0.25);
  background: linear-gradient(145deg, rgba(197, 160, 40, 0.08), rgba(19, 22, 26, 0.9));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 2;
  transition: all var(--transition);
  box-shadow: 0 0 20px rgba(197, 160, 40, 0.05);
}

.uc-item:hover .uc-num {
  border-color: var(--gold);
  box-shadow: 0 0 30px rgba(197, 160, 40, 0.2);
  transform: scale(1.05);
  background: linear-gradient(145deg, rgba(197, 160, 40, 0.15), rgba(19, 22, 26, 0.9));
}

.uc-line {
  width: 2px;
  flex: 1;
  background: linear-gradient(180deg, rgba(197, 160, 40, 0.3), rgba(160, 160, 160, 0.08));
  margin: 0.5rem 0;
}

/* Content card */
.uc-item-content {
  flex: 1;
  background: linear-gradient(145deg, rgba(45, 51, 57, 0.6), rgba(26, 30, 35, 0.8));
  border: 1px solid rgba(197, 160, 40, 0.06);
  border-radius: 20px;
  padding: 2.5rem;
  margin-bottom: 2rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.uc-item-content::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--silver-light), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.uc-item-content::after {
  content: '';
  position: absolute;
  top: -40%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(197, 160, 40, 0.03), transparent 60%);
  opacity: 0;
  transition: opacity var(--transition-slow);
  pointer-events: none;
}

.uc-item:hover .uc-item-content {
  border-color: rgba(197, 160, 40, 0.15);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35), 0 0 40px rgba(197, 160, 40, 0.06);
  transform: translateY(-3px);
}

.uc-item:hover .uc-item-content::before { opacity: 1; }
.uc-item:hover .uc-item-content::after { opacity: 1; }

/* Header with icon and title */
.uc-item-header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.uc-item-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(197, 160, 40, 0.15), rgba(197, 160, 40, 0.04));
  border: 1px solid rgba(197, 160, 40, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition);
}

.uc-item:hover .uc-item-icon {
  background: linear-gradient(135deg, rgba(197, 160, 40, 0.25), rgba(197, 160, 40, 0.08));
  box-shadow: 0 0 24px rgba(197, 160, 40, 0.15);
  border-color: rgba(197, 160, 40, 0.3);
}

.uc-item-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--gold);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.uc-item-header h3 {
  color: var(--white);
  font-size: 1.35rem;
  line-height: 1.25;
}

/* Two-column problem/solution body */
.uc-item-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  position: relative;
}

.uc-item-body::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  background: linear-gradient(180deg, rgba(197, 160, 40, 0.15), rgba(160, 160, 160, 0.06), rgba(197, 160, 40, 0.15));
}

.uc-col {
  position: relative;
}

.uc-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-weight: 600;
  margin-bottom: 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0.85rem;
  border-radius: 6px;
}

.uc-label::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.uc-label-problem {
  color: var(--silver-light);
  background: rgba(160, 160, 160, 0.08);
}

.uc-label-problem::before {
  background: var(--silver);
}

.uc-label-solution {
  color: var(--gold-light);
  background: rgba(197, 160, 40, 0.08);
}

.uc-label-solution::before {
  background: var(--gold);
}

.uc-col p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.8;
}

/* Sector tags */
.uc-sectors {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(160, 160, 160, 0.06);
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.uc-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  background: rgba(160, 160, 160, 0.06);
  border: 1px solid rgba(160, 160, 160, 0.08);
  padding: 0.3rem 0.85rem;
  border-radius: 100px;
  transition: all var(--transition);
  letter-spacing: 0.02em;
}

.uc-item:hover .uc-tag {
  border-color: rgba(197, 160, 40, 0.15);
  color: var(--gold-light);
  background: rgba(197, 160, 40, 0.06);
}

/* Responsive: Use case timeline */
@media (max-width: 900px) {
  .uc-item-body {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .uc-item-body::before { display: none; }
}

@media (max-width: 768px) {
  .uc-item-number { display: none; }
  .uc-item { gap: 0; }
  .uc-item-content { padding: 1.75rem; margin-bottom: 1.25rem; }
  .uc-item-header h3 { font-size: 1.15rem; }
  .uc-item-icon { width: 44px; height: 44px; border-radius: 10px; }
  .uc-item-icon svg { width: 20px; height: 20px; }
}

/* Legacy — keep for backward compat */
.use-case-detail {
  padding: 2.5rem;
  background: linear-gradient(145deg, rgba(45, 51, 57, 0.6), rgba(26, 30, 35, 0.8));
  border: 1px solid rgba(197, 160, 40, 0.06);
  border-radius: 16px;
  margin-bottom: 1.5rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

/* --- Category tabs --- */
.category-tabs {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
  justify-content: center;
}

.category-tab {
  padding: 0.55rem 1.3rem;
  background: rgba(45, 51, 57, 0.5);
  border: 1px solid rgba(160, 160, 160, 0.1);
  border-radius: 100px;
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}

.category-tab:hover {
  background: rgba(197, 160, 40, 0.08);
  border-color: rgba(197, 160, 40, 0.2);
  color: var(--gold-light);
}

.category-tab.active {
  background: rgba(197, 160, 40, 0.12);
  border-color: var(--gold);
  color: var(--gold);
  box-shadow: 0 0 16px rgba(197, 160, 40, 0.15);
}

/* --- Page Header --- */
.page-header {
  padding: 11rem 0 5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(197, 160, 40, 0.05) 0%, transparent 60%);
  pointer-events: none;
  animation: float 12s ease-in-out infinite;
}

.page-header h1 {
  margin-bottom: 1.25rem;
  position: relative;
}

.page-header p {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 580px;
  margin: 0 auto;
  position: relative;
  line-height: 1.8;
}

/* --- Standards list --- */
.standards-list {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 2.5rem;
  position: relative;
}

.standard-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  background: rgba(197, 160, 40, 0.06);
  border: 1px solid rgba(197, 160, 40, 0.12);
  border-radius: 10px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--gold-light);
  transition: all var(--transition);
}

.standard-badge:hover {
  background: rgba(197, 160, 40, 0.1);
  border-color: rgba(197, 160, 40, 0.25);
  box-shadow: 0 0 20px rgba(197, 160, 40, 0.1);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    background: rgba(19, 22, 26, 0.97);
    backdrop-filter: blur(24px);
    padding: 2rem;
    gap: 1.5rem;
    border-bottom: 1px solid rgba(197, 160, 40, 0.08);
  }
  .menu-toggle { display: block; }

  .pipeline {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .pipeline::before { display: none; }

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

  .hero-content h1 { font-size: 2.4rem; }

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

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  .cta-banner { padding: 2.5rem 1.5rem; }

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

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

  .section { padding: 5rem 0; }

  .page-header { padding: 9rem 0 3rem; }
}

@media (max-width: 480px) {
  .container { padding: 0 1.25rem; }
  h1 { font-size: 2rem; }
  .hero-content p { font-size: 1rem; }
  .btn { padding: 0.8rem 1.5rem; font-size: 0.88rem; }
}