/* ==========================================================================
   博纳拓思天津 — Panactos Tianjin
   Design System & Complete Styles
   ========================================================================== */

/* ---- Google Fonts ---- */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700;900&family=Orbitron:wght@400;700;900&display=swap');

/* ---- CSS Custom Properties ---- */
:root {
  --bg-primary: #0a0e27;
  --bg-secondary: #0d1137;
  --bg-card: rgba(13, 17, 55, 0.6);
  --accent: #00d4ff;
  --accent-glow: rgba(0, 212, 255, 0.3);
  --purple: #7b2ff7;
  --purple-glow: rgba(123, 47, 247, 0.3);
  --gradient-accent: linear-gradient(135deg, #00d4ff 0%, #7b2ff7 100%);
  --gradient-bg: linear-gradient(180deg, #0a0e27 0%, #0d1137 50%, #0a0e27 100%);
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --text-muted: rgba(255, 255, 255, 0.4);
  --glass-bg: rgba(255, 255, 255, 0.04);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-hover: rgba(255, 255, 255, 0.08);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --font-cn: 'Noto Sans SC', -apple-system, 'Microsoft YaHei', sans-serif;
  --font-en: 'Orbitron', monospace;
  --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.15);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --section-padding: 100px 0;
}

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

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

body {
  font-family: var(--font-cn);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: #fff;
  text-shadow: 0 0 8px var(--accent-glow);
}

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

ul {
  list-style: none;
}

::selection {
  background: var(--accent);
  color: var(--bg-primary);
}

/* ---- Utility Classes ---- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--section-padding);
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 0.75rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.2);
  padding: 6px 20px;
  border-radius: 50px;
  margin-bottom: 20px;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  font-weight: 300;
}

/* Scroll Reveal Animation */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

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

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

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

.reveal-delay-4 {
  transition-delay: 0.4s;
}

/* ============================
   NAVIGATION
   ============================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(10, 14, 39, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  padding: 10px 0;
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-logo img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
}

.nav-logo-text {
  font-family: var(--font-en);
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 1px;
}

.nav-logo-sub {
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 2px;
}

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 400;
  position: relative;
  padding: 4px 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-accent);
  transition: width 0.3s ease;
}

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

.nav-links a:hover {
  color: #fff;
  text-shadow: none;
}

.nav-cta {
  padding: 8px 24px !important;
  border-radius: 50px !important;
  background: var(--gradient-accent) !important;
  color: #fff !important;
  font-weight: 500 !important;
  border: none;
  cursor: pointer;
}

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

.nav-cta:hover {
  box-shadow: 0 0 20px var(--accent-glow), 0 0 40px var(--purple-glow);
  transform: translateY(-1px);
}

/* Mobile Menu Toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 30px;
  height: 24px;
  position: relative;
  z-index: 1001;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: var(--transition);
  position: absolute;
  left: 0;
}

.nav-toggle span:nth-child(1) {
  top: 0;
}

.nav-toggle span:nth-child(2) {
  top: 50%;
  transform: translateY(-50%);
}

.nav-toggle span:nth-child(3) {
  bottom: 0;
}

.nav-toggle.active span:nth-child(1) {
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
}

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

.nav-toggle.active span:nth-child(3) {
  bottom: 50%;
  transform: translateY(50%) rotate(-45deg);
}

/* ============================
   HERO SECTION
   ============================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

#neural-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-bg-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 0%, var(--bg-primary) 75%);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  padding: 0 24px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 212, 255, 0.06);
  border: 1px solid rgba(0, 212, 255, 0.15);
  border-radius: 50px;
  padding: 8px 20px;
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 1px;
  margin-bottom: 32px;
  animation: fadeInDown 0.8s ease 0.2s both;
}

.hero-badge .dot {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {

  0%,
  100% {
    opacity: 1;
    box-shadow: 0 0 4px var(--accent);
  }

  50% {
    opacity: 0.5;
    box-shadow: 0 0 12px var(--accent);
  }
}

.hero h1 {
  font-size: clamp(2.2rem, 5.5vw, 4rem);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 24px;
  animation: fadeInUp 0.8s ease 0.4s both;
}

.hero h1 .gradient-text {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  font-weight: 300;
  line-height: 1.9;
  margin-bottom: 40px;
  animation: fadeInUp 0.8s ease 0.6s both;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.8s both;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  background: var(--gradient-accent);
  color: #fff;
  font-size: 1rem;
  font-weight: 500;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-cn);
}

.btn-primary:hover {
  box-shadow: 0 0 25px var(--accent-glow), 0 0 50px var(--purple-glow);
  transform: translateY(-2px);
  color: #fff;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  background: transparent;
  color: var(--text-secondary);
  font-size: 1rem;
  font-weight: 400;
  border-radius: 50px;
  border: 1px solid var(--glass-border);
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-cn);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: #fff;
  background: rgba(0, 212, 255, 0.05);
  text-shadow: none;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-top: 64px;
  animation: fadeInUp 0.8s ease 1s both;
}

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

.hero-stat-number {
  font-family: var(--font-en);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.hero-stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 6px;
}

/* Keyframes */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================
   ABOUT SECTION
   ============================ */
.about {
  background: var(--gradient-bg);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  position: relative;
}

.about-image-main {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-card);
}

.about-image-main img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.about-image-badge {
  position: absolute;
  bottom: -20px;
  right: -20px;
  background: var(--gradient-accent);
  border-radius: var(--radius-md);
  padding: 20px 28px;
  text-align: center;
  box-shadow: var(--shadow-glow);
}

.about-image-badge .number {
  font-family: var(--font-en);
  font-size: 2rem;
  font-weight: 900;
  line-height: 1;
}

.about-image-badge .label {
  font-size: 0.75rem;
  margin-top: 4px;
}

.about-text h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-weight: 300;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 32px;
}

.about-feature {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
}

.about-feature .icon {
  font-size: 1.2rem;
  flex-shrink: 0;
}

/* ============================
   TECHNOLOGY SECTION
   ============================ */
.technology {
  position: relative;
}

.technology::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 50%, rgba(0, 212, 255, 0.04) 0%, transparent 50%),
    radial-gradient(circle at 70% 50%, rgba(123, 47, 247, 0.04) 0%, transparent 50%);
}

.tech-visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  position: relative;
  z-index: 1;
}

.tech-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.tech-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-accent);
  opacity: 0;
  transition: var(--transition);
}

.tech-card:hover {
  border-color: rgba(0, 212, 255, 0.2);
  background: var(--glass-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

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

.tech-card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: rgba(0, 212, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.tech-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.tech-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 300;
  line-height: 1.8;
}

/* Full-width tech principle cards */
.tech-principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 60px;
  position: relative;
  z-index: 1;
}

.principle-card {
  text-align: center;
  padding: 32px 24px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.principle-card:hover {
  border-color: rgba(0, 212, 255, 0.15);
  background: var(--glass-hover);
}

.principle-number {
  font-family: var(--font-en);
  font-size: 2.5rem;
  font-weight: 900;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 12px;
}

.principle-card h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.principle-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 300;
}

/* ============================
   PROGRAMS SECTION
   ============================ */
.programs {
  background: var(--gradient-bg);
}

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

.program-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.program-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transition: transform 0.4s ease;
}

.program-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 212, 255, 0.2);
  box-shadow: var(--shadow-glow);
}

.program-card:hover::after {
  transform: scaleX(1);
}

.program-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
  display: block;
}

.program-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.program-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 300;
  line-height: 1.7;
}

.program-tag {
  display: inline-block;
  margin-top: 16px;
  font-size: 0.7rem;
  padding: 4px 12px;
  border-radius: 50px;
  background: rgba(0, 212, 255, 0.08);
  color: var(--accent);
  border: 1px solid rgba(0, 212, 255, 0.15);
}

/* ============================
   PROCESS SECTION
   ============================ */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}

/* Connection line */
.process-steps::before {
  content: '';
  position: absolute;
  top: 44px;
  left: 12.5%;
  right: 12.5%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--purple) 100%);
  opacity: 0.3;
}

.process-step {
  text-align: center;
  position: relative;
}

.step-number {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-en);
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 auto 20px;
  position: relative;
  z-index: 1;
  box-shadow: 0 0 20px var(--accent-glow);
}

.step-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.process-step h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.process-step p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 300;
  line-height: 1.7;
}

/* ============================
   DATA / RESULTS SECTION
   ============================ */
.results {
  background: var(--gradient-bg);
}

.results-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.results-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.stat-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  text-align: center;
  transition: var(--transition);
}

.stat-card:hover {
  border-color: rgba(0, 212, 255, 0.2);
  background: var(--glass-hover);
}

.stat-value {
  font-family: var(--font-en);
  font-size: 2.2rem;
  font-weight: 900;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 8px;
  font-weight: 300;
}

.results-testimonials h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.testimonial-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 28px;
  margin-bottom: 16px;
  transition: var(--transition);
}

.testimonial-card:hover {
  border-color: rgba(0, 212, 255, 0.15);
}

.testimonial-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 300;
  line-height: 1.8;
  font-style: italic;
  margin-bottom: 12px;
}

.testimonial-author {
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 500;
}

/* ============================
   CERTIFICATIONS
   ============================ */
.certs-grid {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}

.cert-item {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  width: 180px;
  transition: var(--transition);
}

.cert-item:hover {
  border-color: rgba(0, 212, 255, 0.2);
  transform: translateY(-4px);
}

.cert-item img {
  width: 80px;
  height: 80px;
  object-fit: contain;
  margin: 0 auto 12px;
}

.cert-item p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 400;
}

/* ============================
   BOOKING / CONTACT FORM
   ============================ */
.booking {
  position: relative;
}

.booking::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(123, 47, 247, 0.06) 0%, transparent 50%);
}

.booking-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  position: relative;
  z-index: 1;
}

.booking-form {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  font-weight: 400;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: #fff;
  font-family: var(--font-cn);
  font-size: 0.95rem;
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  background: rgba(0, 212, 255, 0.04);
  box-shadow: 0 0 12px rgba(0, 212, 255, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-group select option {
  background: var(--bg-secondary);
  color: #fff;
}

.form-submit {
  width: 100%;
  padding: 14px;
  background: var(--gradient-accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  font-family: var(--font-cn);
  transition: var(--transition);
}

.form-submit:hover {
  box-shadow: 0 0 25px var(--accent-glow), 0 0 50px var(--purple-glow);
  transform: translateY(-2px);
}

/* Booking info side */
.booking-info h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.booking-info-list {
  margin-bottom: 32px;
}

.booking-info-item {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--glass-border);
}

.booking-info-item:last-child {
  border-bottom: none;
}

.booking-info-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(0, 212, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.booking-info-text h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.booking-info-text p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 300;
}

/* QR Code */
.qr-section {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
}

.qr-section h4 {
  font-size: 0.9rem;
  margin-bottom: 12px;
}

.qr-placeholder {
  width: 120px;
  height: 120px;
  background: #fff;
  border-radius: 8px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  color: #333;
}

/* ============================
   FOOTER
   ============================ */
.footer {
  border-top: 1px solid var(--glass-border);
  padding: 48px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .nav-logo {
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 300;
  line-height: 1.8;
}

.footer-links h4,
.footer-contact h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--accent);
}

.footer-links a {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding: 4px 0;
  transition: var(--transition);
}

.footer-links a:hover {
  color: #fff;
  padding-left: 8px;
  text-shadow: none;
}

.footer-contact p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.footer-bottom {
  border-top: 1px solid var(--glass-border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ============================
   SECTION DIVIDER / GLOW
   ============================ */
.section-glow {
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--accent) 50%, transparent 100%);
  opacity: 0.2;
}

/* ============================
   SCROLL TO TOP BUTTON
   ============================ */
.scroll-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-accent);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition);
  z-index: 999;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-top:hover {
  box-shadow: 0 0 20px var(--accent-glow), 0 0 40px var(--purple-glow);
  transform: translateY(-2px);
}

/* ============================
   LOADING SCREEN
   ============================ */
.loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

.loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-brain {
  width: 60px;
  height: 60px;
  margin-bottom: 24px;
  animation: pulse-brain 1.5s infinite ease-in-out;
}

@keyframes pulse-brain {

  0%,
  100% {
    transform: scale(1);
    filter: drop-shadow(0 0 8px var(--accent));
  }

  50% {
    transform: scale(1.1);
    filter: drop-shadow(0 0 20px var(--accent));
  }
}

.loader-bar {
  width: 200px;
  height: 3px;
  background: var(--glass-border);
  border-radius: 3px;
  overflow: hidden;
}

.loader-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--gradient-accent);
  border-radius: 3px;
  animation: load-bar 1.5s ease forwards;
}

@keyframes load-bar {
  0% {
    width: 0%;
  }

  50% {
    width: 70%;
  }

  100% {
    width: 100%;
  }
}

/* ============================
   RESPONSIVE DESIGN
   ============================ */
/* ============================
   EXPERTS SECTION
   ============================ */
.experts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.expert-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.expert-card:hover {
  transform: translateY(-8px);
  border-color: rgba(0, 212, 255, 0.2);
  box-shadow: var(--shadow-glow);
}

.expert-image {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  margin: 0 auto 24px;
  padding: 4px;
  border: 2px solid var(--accent);
  overflow: hidden;
  background: var(--bg-primary);
}

.expert-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

.expert-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--accent);
}

.expert-title {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

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

/* ============================
   ENHANCED RESULTS / CASES
   ============================ */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 64px;
}

.case-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: var(--transition);
}

.case-card:hover {
  background: var(--glass-hover);
  border-color: rgba(0, 212, 255, 0.15);
}

.case-card .tag {
  display: inline-block;
  font-size: 0.7rem;
  padding: 2px 8px;
  background: rgba(123, 47, 247, 0.1);
  color: var(--purple);
  border: 1px solid rgba(123, 47, 247, 0.2);
  border-radius: 4px;
  margin-bottom: 12px;
}

.case-card h4 {
  font-size: 1.05rem;
  margin-bottom: 12px;
}

.case-stats {
  display: flex;
  justify-content: space-between;
  margin-bottom: 16px;
  padding: 12px;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 8px;
}

.case-stat-item {
  text-align: center;
}

.case-stat-val {
  display: block;
  font-family: var(--font-en);
  font-weight: 700;
  color: var(--accent);
  font-size: 1.1rem;
}

.case-stat-lbl {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.case-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

@media (max-width: 1024px) {
  .experts-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .experts-grid {
    grid-template-columns: 1fr;
  }

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

/* ============================
   RESPONSIVE DESIGN
   ============================ */
@media (max-width: 1024px) {
  .programs-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

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

@media (max-width: 768px) {
  :root {
    --section-padding: 60px 0;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: rgba(10, 14, 39, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    gap: 24px;
    padding: 40px;
    transition: right 0.4s ease;
    border-left: 1px solid var(--glass-border);
  }

  .nav-links.open {
    right: 0;
  }

  .nav-toggle {
    display: block;
  }

  .hero h1 {
    font-size: clamp(1.8rem, 6vw, 2.8rem);
  }

  .hero-stats {
    gap: 24px;
    flex-wrap: wrap;
  }

  .about-grid,
  .results-grid,
  .booking-grid,
  .tech-visual {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

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

  .process-steps {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .process-steps::before {
    display: none;
  }

  .tech-principles {
    grid-template-columns: 1fr;
  }

  .about-image-badge {
    bottom: -10px;
    right: 10px;
    padding: 14px 20px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .section-header {
    margin-bottom: 40px;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .hero-stat-number {
    font-size: 1.5rem;
  }

  .about-features {
    grid-template-columns: 1fr;
  }

  .process-steps {
    grid-template-columns: 1fr;
  }

  .certs-grid {
    gap: 16px;
  }

  .cert-item {
    width: 140px;
    padding: 16px;
  }

  .booking-form {
    padding: 24px;
  }
}

.section-cases {
  margin-top: 64px;
}

.section-cases-title {
  text-align: center;
  font-size: 1.2rem;
  margin-bottom: 32px;
}

/* ============================
   CERTIFICATIONS SECTION (STYLING)
   ============================ */
.certs-container {
  margin-top: 80px;
}

.certs-title {
  text-align: center;
  font-size: 1.2rem;
  margin-bottom: 32px;
}

/* ============================
   NEWS / INSIGHTS SECTION
   ============================ */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.news-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.news-card:hover {
  transform: translateY(-8px);
  border-color: rgba(0, 212, 255, 0.2);
  box-shadow: var(--shadow-glow);
}

.news-image {
  height: 200px;
  position: relative;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.3);
}

.news-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.news-card:hover .news-image img {
  transform: scale(1.1);
}

.news-content {
  padding: 24px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.news-meta {
  font-size: 0.75rem;
  color: var(--accent);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.news-card h3 {
  font-size: 1.15rem;
  margin-bottom: 12px;
  line-height: 1.4;
}

.news-excerpt {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

.news-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 4px;
}

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