/* ============================================================
   JobPanda Consulting — Professional Stylesheet
   Deep Blue / White / Gold  |  Modern Sans-Serif
   ============================================================ */

/* ─── CSS Custom Properties ─── */
:root {
  --navy: #0a1f3d;
  --navy-light: #122d5a;
  --navy-dark: #07152b;
  --blue: #1a56db;
  --blue-light: #3b82f6;
  --gold: #d4a843;
  --gold-light: #e8c46a;
  --gold-dark: #b8922e;
  --white: #ffffff;
  --off-white: #f8f7f4;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --text: #1e1e2a;
  --text-muted: #6b7280;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --container: 1200px;
  --nav-height: 72px;
}

/* ─── Reset & Base ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--white);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--blue-light); }
ul, ol { list-style: none; }
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: 96px 0;
}
.section-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 12px;
}
.section-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.2;
  margin-bottom: 16px;
}
.section-sub {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 640px;
  line-height: 1.7;
}
.text-center { text-align: center; }
.text-center .section-sub { margin: 0 auto; }

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 16px;
  font-weight: 600;
  font-family: var(--font-sans);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
  line-height: 1;
  text-decoration: none;
}
.btn-primary {
  background: var(--gold);
  color: var(--navy);
  border-color: var(--gold);
}
.btn-primary:hover {
  background: var(--gold-dark);
  border-color: var(--gold-dark);
  color: var(--navy);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(212, 168, 67, 0.35);
}
.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.4);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--white);
  color: var(--white);
  transform: translateY(-2px);
}
.btn-gold-outline {
  background: transparent;
  color: var(--gold);
  border-color: var(--gold);
}
.btn-gold-outline:hover {
  background: var(--gold);
  color: var(--navy);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(212, 168, 67, 0.3);
}

/* ─── Navigation ─── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(10, 31, 61, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: background var(--transition);
}
.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 800;
  color: var(--white);
  text-decoration: none;
  letter-spacing: -0.5px;
}
.nav-logo:hover { color: var(--gold); }
.nav-logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gold);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--navy);
  font-weight: 800;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links a {
  color: rgba(255,255,255,0.75);
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  text-decoration: none;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--white);
  background: rgba(255,255,255,0.08);
}
.lang-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 12px;
  padding-left: 12px;
  border-left: 1px solid rgba(255,255,255,0.15);
}
.lang-btn {
  background: none;
  border: none;
  color: rgba(255,255,255,0.5);
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
  transition: all var(--transition);
}
.lang-btn.active {
  color: var(--gold);
  background: rgba(212,168,67,0.15);
}
.lang-btn:hover { color: var(--white); }
.nav-mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  font-size: 24px;
  cursor: pointer;
  padding: 8px;
}
.nav-mobile-toggle:focus { outline: 2px solid var(--gold); outline-offset: 2px; }

/* ─── Hero Section ─── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 40%, var(--navy-light) 100%);
  overflow: hidden;
  padding-top: var(--nav-height);
}
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(212,168,67,0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(59,130,246,0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(10,31,61,0.4) 0%, transparent 50%);
  pointer-events: none;
}
.hero-grid {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}
.hero .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding-top: 40px;
  padding-bottom: 40px;
}
.hero-content {
  max-width: 580px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(212,168,67,0.12);
  border: 1px solid rgba(212,168,67,0.25);
  color: var(--gold);
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 24px;
}
.hero-title {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.1;
  color: var(--white);
  margin-bottom: 20px;
  letter-spacing: -1px;
}
.hero-title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 18px;
  color: rgba(255,255,255,0.7);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 500px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding: 32px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(8px);
}
.hero-stat {
  text-align: center;
}
.hero-stat-num {
  font-size: 36px;
  font-weight: 800;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 6px;
}
.hero-stat-label {
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  font-weight: 500;
}

/* ─── About Section ─── */
.about {
  background: var(--white);
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-image {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--gray-100);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
}
.about-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--navy), var(--navy-light));
  color: var(--white);
  font-size: 64px;
}
.about-image-placeholder span {
  font-size: 18px;
  margin-top: 16px;
  color: rgba(255,255,255,0.6);
}
.about-text h3 {
  font-size: 22px;
  color: var(--navy);
  margin-bottom: 16px;
  font-weight: 700;
}
.about-text p {
  color: var(--gray-600);
  margin-bottom: 16px;
  line-height: 1.8;
  font-size: 16px;
}
.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 24px;
}
.about-feature {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  background: var(--gray-50);
  border-radius: var(--radius-sm);
}
.about-feature-icon {
  width: 36px;
  height: 36px;
  min-width: 36px;
  background: rgba(212,168,67,0.12);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--gold);
}
.about-feature-text {
  font-size: 14px;
  color: var(--gray-700);
  font-weight: 500;
}
.about-feature-text small {
  display: block;
  font-weight: 400;
  color: var(--gray-500);
  font-size: 13px;
  margin-top: 2px;
}

/* ─── Services Section ─── */
.services {
  background: var(--off-white);
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.service-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  border: 1px solid var(--gray-200);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.service-card:hover {
  border-color: rgba(212,168,67,0.3);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.service-card:hover::before { transform: scaleX(1); }
.service-icon {
  width: 52px;
  height: 52px;
  background: rgba(212,168,67,0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 20px;
  color: var(--gold);
}
.service-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 10px;
}
.service-card p {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.7;
}

/* ─── Research Section ─── */
.research {
  background: var(--white);
}
.research-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.research-card {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: all var(--transition);
}
.research-card:hover {
  border-color: var(--gold);
  box-shadow: var(--shadow-md);
}
.research-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}
.research-card-chapter {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--gold);
  background: rgba(212,168,67,0.1);
  padding: 4px 12px;
  border-radius: 100px;
  white-space: nowrap;
}
.research-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 12px;
  line-height: 1.3;
}
.research-card ul {
  margin-bottom: 16px;
}
.research-card li {
  font-size: 14px;
  color: var(--gray-600);
  padding: 6px 0;
  padding-left: 20px;
  position: relative;
  line-height: 1.6;
}
.research-card li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--gold);
  font-weight: 700;
}
.research-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--blue);
  transition: gap var(--transition);
}
.research-card-link:hover { gap: 10px; }

/* ─── CTA Section ─── */
.cta {
  background: linear-gradient(135deg, var(--navy-dark), var(--navy));
  position: relative;
  overflow: hidden;
}
.cta::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(212,168,67,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.cta .container {
  position: relative;
  z-index: 2;
}
.cta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.cta-text .section-title {
  color: var(--white);
}
.cta-text .section-sub {
  color: rgba(255,255,255,0.65);
}
.cta-contact-item {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
  color: rgba(255,255,255,0.8);
  font-size: 15px;
}
.cta-contact-icon {
  width: 40px;
  height: 40px;
  min-width: 40px;
  background: rgba(212,168,67,0.12);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--gold);
}
.cta-contact-item a {
  color: rgba(255,255,255,0.8);
}
.cta-contact-item a:hover { color: var(--gold); }
.cta-form {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  padding: 36px;
}
.cta-form h3 {
  color: var(--white);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 24px;
}
.form-group {
  margin-bottom: 16px;
}
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: rgba(255,255,255,0.6);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-sm);
  color: var(--white);
  font-size: 15px;
  font-family: var(--font-sans);
  transition: border-color var(--transition);
  outline: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(255,255,255,0.3);
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--gold);
  background: rgba(255,255,255,0.1);
}
.form-group textarea {
  min-height: 100px;
  resize: vertical;
}
.form-success {
  display: none;
  text-align: center;
  padding: 24px;
}
.form-success.show { display: block; }
.form-success-icon {
  font-size: 48px;
  margin-bottom: 16px;
}
.form-success h3 {
  color: var(--gold);
  margin-bottom: 8px;
}
.form-success p {
  color: rgba(255,255,255,0.7);
  font-size: 15px;
}
.form-error {
  color: #ef4444;
  font-size: 13px;
  margin-top: 4px;
  display: none;
}
.form-error.show { display: block; }

/* ─── Footer ─── */
.footer {
  background: var(--navy-dark);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 48px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .nav-logo {
  margin-bottom: 12px;
}
.footer-brand p {
  font-size: 14px;
  color: rgba(255,255,255,0.45);
  line-height: 1.7;
  max-width: 300px;
}
.footer h4 {
  color: var(--white);
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.footer-links a {
  display: block;
  color: rgba(255,255,255,0.5);
  font-size: 14px;
  padding: 4px 0;
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--gold); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p {
  font-size: 13px;
  color: rgba(255,255,255,0.35);
}
.footer-disclaimer {
  font-size: 12px;
  color: rgba(255,255,255,0.3);
  line-height: 1.7;
  max-width: 600px;
}

/* ─── Research Full Page ─── */
.research-page {
  padding-top: var(--nav-height);
  background: var(--off-white);
  min-height: 100vh;
}
.research-page-header {
  background: linear-gradient(135deg, var(--navy-dark), var(--navy));
  padding: 60px 0 48px;
  text-align: center;
}
.research-page-header h1 {
  color: var(--white);
  font-size: 40px;
  font-weight: 800;
  margin-bottom: 12px;
}
.research-page-header p {
  color: rgba(255,255,255,0.6);
  font-size: 17px;
  max-width: 600px;
  margin: 0 auto;
}
.research-page .research-toc {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  padding: 28px 32px;
  margin: 32px 0;
}
.research-page .research-toc h2 {
  font-size: 18px;
  color: var(--navy);
  margin-bottom: 16px;
}
.research-page .research-toc ol {
  list-style: decimal;
  padding-left: 20px;
}
.research-page .research-toc li {
  padding: 6px 0;
  font-size: 15px;
}
.research-page .research-toc a {
  color: var(--navy-light);
  font-weight: 500;
}
.research-page .research-toc a:hover { color: var(--gold); }
.research-content {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px 80px;
}
.research-content h1 {
  font-size: 30px;
  font-weight: 700;
  color: var(--navy);
  margin: 48px 0 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--gold);
}
.research-content h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--navy);
  margin: 36px 0 12px;
}
.research-content h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--gray-800);
  margin: 28px 0 10px;
}
.research-content h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--gray-700);
  margin: 24px 0 8px;
}
.research-content p {
  margin-bottom: 14px;
  color: var(--gray-700);
  line-height: 1.8;
}
.research-content blockquote {
  margin: 20px 0;
  padding: 16px 20px;
  border-left: 4px solid var(--gold);
  background: rgba(212,168,67,0.06);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 14px;
  color: var(--gray-600);
  line-height: 1.7;
}
.research-content blockquote strong { color: var(--navy); }
.research-content .table-wrap {
  overflow-x: auto;
  margin: 16px 0;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
}
.research-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.research-content th, .research-content td {
  padding: 10px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--gray-200);
}
.research-content th {
  background: var(--gray-50);
  font-weight: 600;
  color: var(--navy);
}
.research-content tr:last-child td { border-bottom: none; }
.research-content tr:nth-child(even) td { background: var(--gray-50); }
.research-content pre {
  background: var(--gray-100);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.5;
  margin: 16px 0;
  font-family: 'SFMono-Regular', 'Cascadia Code', 'Fira Code', Consolas, monospace;
}
.research-content code {
  font-family: 'SFMono-Regular', 'Cascadia Code', 'Fira Code', Consolas, monospace;
  font-size: 13px;
  background: var(--gray-100);
  padding: 2px 6px;
  border-radius: 4px;
  word-break: break-word;
}
.research-content pre code { background: none; padding: 0; }
.research-content ul, .research-content ol {
  margin-bottom: 14px;
  padding-left: 24px;
}
.research-content li {
  margin-bottom: 6px;
  color: var(--gray-700);
  line-height: 1.7;
}
.research-content hr {
  border: none;
  border-top: 2px solid var(--gray-200);
  margin: 40px 0;
}
.research-content .chapter-meta {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  margin-bottom: 24px;
  font-size: 14px;
  color: var(--gray-600);
}
.research-content .chapter-meta strong { color: var(--navy); }
.fn-ref { font-size: 11px; vertical-align: super; line-height: 0; }
.fn-ref a { color: var(--blue); text-decoration: none; }

/* ─── CN Language Hidden by Default ─── */
[lang="zh"] { display: none; }
body.lang-cn [lang="en"] { display: none; }
body.lang-cn [lang="zh"] { display: inline; }
body.lang-cn .section-title[lang="zh"],
body.lang-cn .section-sub[lang="zh"],
body.lang-cn .hero-title[lang="zh"],
body.lang-cn .hero-sub[lang="zh"],
body.lang-cn .service-card h3[lang="zh"],
body.lang-cn .research-card h3[lang="zh"] { display: block; }
body.lang-cn .section-title[lang="en"],
body.lang-cn .section-sub[lang="en"],
body.lang-cn .hero-title[lang="en"],
body.lang-cn .hero-sub[lang="en"],
body.lang-cn .service-card h3[lang="en"],
body.lang-cn .research-card h3[lang="en"] { display: none; }

/* ─── Scroll Animations ─── */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── Responsive ─── */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .research-grid { grid-template-columns: 1fr; }
  .cta-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero .container { grid-template-columns: 1fr; gap: 40px; }
  .hero-content { max-width: 100%; }
  .hero-stats { max-width: 100%; }
  .hero-title { font-size: 40px; }
  .about-grid { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  :root { --nav-height: 64px; }
  .section { padding: 64px 0; }
  .section-title { font-size: 28px; }
  .section-sub { font-size: 16px; }
  .container { padding: 0 16px; }
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(10,31,61,0.98);
    padding: 16px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    gap: 4px;
  }
  .nav-links.open a { padding: 12px 16px; }
  .lang-toggle {
    margin-left: 0;
    padding-left: 0;
    border-left: none;
    padding: 8px 16px;
  }
  .nav-mobile-toggle { display: block; }
  .hero-title { font-size: 32px; }
  .hero-sub { font-size: 16px; }
  .hero-stats { grid-template-columns: repeat(3, 1fr); padding: 20px; gap: 12px; }
  .hero-stat-num { font-size: 28px; }
  .about-features { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: 1fr; gap: 16px; }
  .cta-form { padding: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .research-page-header { padding: 40px 0 32px; }
  .research-page-header h1 { font-size: 28px; }
  .research-content h1 { font-size: 24px; }
  .research-content h2 { font-size: 19px; }
  .research-content { padding: 0 16px 60px; }
  .research-content table { font-size: 13px; }
  .research-content th, .research-content td { padding: 8px 10px; }
  .research-page .research-toc { padding: 20px; }
}
@media (max-width: 480px) {
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .hero-stats { grid-template-columns: 1fr; gap: 16px; }
}