:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-soft: #f1f5f9;
  --blue: #2563eb;
  --blue-deep: #1d4ed8;
  --blue-soft: #eff6ff;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --border: rgba(37, 99, 235, 0.15);
  --shadow: 0 24px 80px rgba(15, 23, 42, 0.08);
}

body {
  background: linear-gradient(180deg, #f8fafc 0%, #e2e8f0 100%);
}

.site-header {
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  color: #fff;
  padding: 18px 20px 16px;
  position: relative;
}

.site-header::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, rgba(255,255,255,0.18), transparent 32%);
  pointer-events: none;
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  max-width: 1200px;
  margin: 0 auto;
}

.site-brand .logo {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  object-fit: contain;
  background: rgba(255,255,255,0.16);
  padding: 8px;
}

.site-brand-name {
  text-align: center;
}

.site-header h1 {
  font-size: clamp(1.5rem, 1.8vw, 2rem);
  margin-bottom: 4px;
}

.site-header p {
  font-size: 0.9rem;
  margin: 0;
  color: rgba(255,255,255,0.92);
}

.site-brand-name h1 {
  font-size: clamp(1.6rem, 2vw, 2.2rem);
  margin-bottom: 4px;
  letter-spacing: -0.03em;
}

.site-brand-name p {
  font-size: 0.94rem;
  color: rgba(255,255,255,0.92);
}

.hero {
  background: #ffffff;
  border-radius: 20px;
  padding: 24px 20px;
  box-shadow: var(--shadow);
  margin-top: 20px;
  text-align: center;
}

.hero h2 {
  font-size: clamp(2rem, 3vw, 2.5rem);
  margin-bottom: 10px;
  color: var(--text-primary);
}

.hero-text {
  color: var(--text-secondary);
  margin-bottom: 20px;
  font-size: 1rem;
}

.hero-buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}

.primary-btn,
.secondary-btn {
  font-weight: 700;
  border-radius: 12px;
  padding: 12px 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.primary-btn {
  background: var(--blue);
  color: #ffffff;
  text-decoration: none;
}

.secondary-btn {
  background: #ffffff;
  color: var(--blue);
  border: 2px solid var(--blue);
  text-decoration: none;
}

.primary-btn:hover,
.secondary-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 18px rgba(37, 99, 235, 0.18);
}

.thumbnail-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 18px;
  margin-bottom: 16px;
}

@media (max-width: 768px) {
  .hero {
    padding: 18px 16px;
  }

  .hero-buttons {
    flex-direction: column;
    gap: 12px;
  }

  .stat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .category-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .job-grid,
  .paper-grid {
    grid-template-columns: 1fr;
  }
}

.main-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 20px 60px;
}

nav {
  margin-bottom: 22px;
}

.hero {
  margin-top: 28px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons a {
  transition: transform 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease, color 0.25s ease;
}

.hero-buttons a:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(37, 99, 235, 0.18);
}

.search-panel h2 {
  font-size: 1.25rem;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.search-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.search-field {
  display: grid;
  gap: 8px;
}

.search-field label {
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.search-field input {
  width: 100%;
  border-radius: 16px;
  border: 1px solid rgba(15,23,42,0.12);
  padding: 16px 18px;
  font-size: 0.98rem;
  color: var(--text-primary);
  background: var(--surface);
}

.search-field input:focus {
  outline: none;
  border-color: rgba(37,99,235,0.5);
  box-shadow: 0 0 0 4px rgba(37,99,235,0.08);
}

.search-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 22px;
}

.search-submit {
  background: var(--blue);
  color: white;
  border: none;
  padding: 16px 26px;
  border-radius: 16px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
}

.search-submit:hover {
  transform: translateY(-1px);
}

.search-suggestion {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-top: 38px;
}

.stat-card {
  background: rgba(255,255,255,0.86);
  border: 1px solid rgba(37,99,235,0.12);
  border-radius: 22px;
  padding: 26px;
  text-align: center;
  box-shadow: 0 18px 50px rgba(15,23,42,0.05);
}

.stat-card span {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
}

.stat-card small {
  display: block;
  margin-top: 10px;
  color: var(--text-secondary);
  font-weight: 600;
}

.section-headline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin: 56px 0 32px;
  flex-wrap: wrap;
}

.section-headline--accent {
  padding: 10px 0;
}

.section-headline-title {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.section-accent-line {
  display: inline-block;
  width: 4px;
  height: 40px;
  background: var(--blue);
  border-radius: 99px;
}

.section-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  line-height: 1;
}

.section-headline--accent span:last-child {
  font-weight: 700;
  font-size: clamp(2.1rem, 3vw, 2.4rem);
  color: var(--text-primary);
  white-space: nowrap;
}

.section-headline .btn-pill {
  flex: 0 0 auto;
}

.section-headline a {
  color: var(--blue);
  font-weight: 700;
}

.btn-pill,
.primary-btn,
.secondary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 9999px;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 10px 18px;
  text-decoration: none;
  transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease, color 0.3s ease;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-pill.primary,
.primary-btn {
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  color: white;
}

.btn-pill.secondary,
.secondary-btn {
  background: #ffffff;
  color: var(--blue);
  border: 2px solid var(--blue);
}

.btn-pill:hover,
.primary-btn:hover,
.secondary-btn:hover {
  background: linear-gradient(135deg, #1d4ed8 0%, #1e40af 100%);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(37, 99, 235, 0.18);
}

.btn-pill:active,
.primary-btn:active,
.secondary-btn:active {
  transform: scale(0.98);
}

@media (max-width: 768px) {
  .btn-pill,
  .primary-btn,
  .secondary-btn {
    padding: 8px 16px;
    font-size: 0.95rem;
  }

  .section-headline {
    align-items: flex-start;
  }

  .section-headline--accent {
    width: 100%;
  }

  .section-headline .btn-pill {
    width: auto;
    margin-top: 10px;
  }
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 18px;
}

.category-card {
  background: var(--surface);
  border: 1px solid rgba(15,23,42,0.08);
  border-radius: 20px;
  padding: 22px;
  text-align: center;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  cursor: pointer;
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 22px 50px rgba(15,23,42,0.1);
}

.category-card .icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  margin: 0 auto 14px;
  background: rgba(37,99,235,0.1);
  color: var(--blue);
  font-size: 1.2rem;
}

.category-card p {
  color: var(--text-primary);
  font-weight: 700;
  font-size: 0.95rem;
}

.featured-card {
  background: linear-gradient(180deg, #ffffff 0%, #eff6ff 100%);
  border-radius: 28px;
  border: 1px solid rgba(37,99,235,0.14);
  box-shadow: var(--shadow);
  padding: 32px;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 30px;
}

.featured-content h3 {
  font-size: 2rem;
  margin-bottom: 14px;
}

.featured-content p {
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 22px;
}

.featured-meta {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}

.featured-meta div {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  background: #ffffff;
  border-radius: 18px;
  padding: 16px 18px;
  border: 1px solid rgba(37,99,235,0.08);
}

.featured-meta strong {
  color: var(--blue-deep);
}

.featured-cta {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.featured-cta a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 18px;
  border-radius: 16px;
  text-decoration: none;
  font-weight: 700;
  transition: background 0.25s ease;
}

.featured-cta .btn-filled {
  background: var(--blue);
  color: white;
}

.featured-cta .btn-outline {
  background: white;
  color: var(--blue);
  border: 1px solid rgba(37,99,235,0.18);
}

.featured-cta a:hover {
  opacity: 0.96;
}

.job-grid,
.paper-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(3, minmax(280px, 1fr));
}

.job-card,
.paper-card {
  background: var(--surface);
  border-radius: 20px;
  padding: 18px;
  box-shadow: 0 16px 30px rgba(15,23,42,0.06);
  border: 1px solid rgba(15,23,42,0.08);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.job-card:hover,
.paper-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 24px 40px rgba(15,23,42,0.12);
}

.card-top {
  display: grid;
  gap: 12px;
}

.card-footer {
  margin-top: auto;
}

.card-copy {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  margin: 0;
  min-height: 3.2rem;
}

.job-card h3,
.paper-card h3,
.update-card h3,
.testimonial-card h3 {
  font-size: 1.15rem;
  margin: 0;
  color: var(--blue);
  line-height: 1.35;
}

.job-card h3 a,
.paper-card h3 a {
  color: inherit;
  text-decoration: none;
}

.job-card h3 a:hover,
.paper-card h3 a:hover {
  text-decoration: underline;
}

.job-card .badge,
.paper-card .badge {
  display: inline-flex;
  background: rgba(37,99,235,0.12);
  color: var(--blue);
  padding: 7px 12px;
  border-radius: 999px;
  font-size: 0.82rem;
  margin-bottom: 8px;
}

.job-card p,
.paper-card p,
.update-card p,
.testimonial-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  margin: 0;
}

.job-info,
.paper-info,
.update-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.job-info span,
.paper-info span,
.update-meta span {
  background: rgba(71, 114, 246, 0.08);
  border-radius: 14px;
  padding: 10px 12px;
}

.job-card .actions,
.paper-card .actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.card-button {
  flex: 1 1 auto;
  text-decoration: none;
  padding: 14px 18px;
  border-radius: 14px;
  font-weight: 700;
  font-size: 0.95rem;
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.card-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 30px rgba(37,99,235,0.18);
}

.card-button.primary {
  background: var(--blue);
  color: white;
}

.card-button.secondary {
  background: rgba(37,99,235,0.08);
  color: var(--text-primary);
}

@media (max-width: 1100px) {
  .job-grid,
  .paper-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

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

  .card-button {
    width: 100%;
  }
}

.timeline {
  background: var(--surface);
  border-radius: 28px;
  border: 1px solid rgba(15,23,42,0.08);
  padding: 32px;
  box-shadow: var(--shadow);
}

.timeline-list {
  display: grid;
  gap: 18px;
}

.timeline-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  align-items: start;
}

.timeline-item .marker {
  width: 14px;
  height: 14px;
  margin-top: 6px;
  border-radius: 50%;
  background: var(--blue);
  border: 3px solid white;
  box-shadow: 0 0 0 4px rgba(37,99,235,0.14);
}

.timeline-item h4 {
  margin-bottom: 6px;
  font-size: 1rem;
  color: var(--text-primary);
}

.timeline-item p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 24px;
}

.feature-card-compact {
  background: var(--surface);
  border-radius: 22px;
  border: 1px solid rgba(15,23,42,0.08);
  padding: 22px;
  display: grid;
  gap: 12px;
}

.feature-card-compact h4 {
  font-size: 1rem;
  color: var(--text-primary);
}

.feature-card-compact p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.popular-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.popular-tags a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(37,99,235,0.08);
  color: var(--blue);
  border-radius: 999px;
  padding: 12px 18px;
  font-size: 0.95rem;
  text-decoration: none;
  transition: background 0.2s ease;
}

.popular-tags a:hover {
  background: rgba(37,99,235,0.16);
}

.cta-panel {
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  border-radius: 28px;
  color: white;
  padding: 38px 36px;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 24px;
  margin: 56px 0 24px;
}

.cta-panel h2 {
  font-size: clamp(1.8rem, 2.3vw, 2.8rem);
  margin-bottom: 12px;
}

.cta-panel p {
  color: rgba(255,255,255,0.9);
  max-width: 640px;
}

.cta-buttons {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.cta-buttons a {
  background: rgba(255,255,255,0.15);
  color: white;
  padding: 14px 18px;
  border-radius: 16px;
  text-decoration: none;
  font-weight: 700;
}

.faq-grid {
  display: grid;
  gap: 18px;
}

.faq-item {
  background: var(--surface);
  border-radius: 22px;
  box-shadow: 0 18px 45px rgba(15,23,42,0.06);
  border: 1px solid rgba(15,23,42,0.08);
  overflow: hidden;
}

.faq-item summary {
  list-style: none;
  padding: 22px 24px;
  cursor: pointer;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-primary);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item p {
  padding: 0 24px 22px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.newsletter-panel {
  background: var(--surface);
  border-radius: 28px;
  border: 1px solid rgba(15,23,42,0.08);
  padding: 32px;
  box-shadow: var(--shadow);
}

.newsletter-panel h2 {
  font-size: 1.9rem;
  margin-bottom: 12px;
}

.newsletter-panel p {
  color: var(--text-secondary);
  margin-bottom: 22px;
}

.newsletter-form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
}

.newsletter-form input {
  border-radius: 16px;
  border: 1px solid rgba(15,23,42,0.12);
  padding: 16px 18px;
  font-size: 1rem;
  color: var(--text-primary);
}

.newsletter-form button {
  background: var(--blue);
  color: white;
  border: none;
  border-radius: 16px;
  padding: 16px 24px;
  font-weight: 700;
  cursor: pointer;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px;
  margin-top: 46px;
}

.footer-grid h3 {
  color: white;
  margin-bottom: 18px;
}

.footer-grid a {
  display: block;
  color: rgba(255,255,255,0.75);
  text-decoration: none;
  margin-bottom: 10px;
  font-size: 0.98rem;
}

.footer-grid a:hover {
  color: white;
}

.footer-bottom {
  margin-top: 36px;
  color: rgba(255,255,255,0.72);
  font-size: 0.95rem;
}

@media (max-width: 1100px) {
  .stat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .category-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .job-grid,
  .paper-grid,
  .update-grid,
  .testimonial-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .main-content {
    margin-top: 0;
    padding: 18px 16px 50px;
  }

  .site-header {
    padding-bottom: 20px;
  }

  .hero {
    padding: 20px 18px;
  }

  .hero-buttons {
    gap: 10px;
  }

  .hero-buttons a {
    width: 100%;
  }

  .hero-visual {
    min-width: auto;
  }

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

  .stat-grid,
  .job-grid,
  .paper-grid,
  .update-grid,
  .testimonial-grid,
  .features-grid {
    grid-template-columns: 1fr;
  }

  .stat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .stat-card {
    padding: 18px;
  }

  .stat-card span {
    font-size: 1.6rem;
  }

  .stat-card small {
    margin-top: 6px;
    font-size: 0.92rem;
  }

  .category-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .category-card {
    padding: 16px;
    border-radius: 18px;
  }

  .category-card .icon {
    width: 42px;
    height: 42px;
    margin-bottom: 10px;
    font-size: 1.1rem;
  }

  .category-card p {
    font-size: 0.92rem;
  }

  .section-headline {
    align-items: center;
    gap: 12px;
  }

  .section-headline--accent {
    width: 100%;
    padding: 0;
  }

  .section-headline .btn-pill {
    margin-top: 0;
  }

  .section-headline-title {
    gap: 10px;
  }

  .section-headline--accent span:last-child {
    font-size: clamp(1.8rem, 2.4vw, 2rem);
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .footer-grid h3 {
    margin-bottom: 12px;
    font-size: 1rem;
  }

  .footer-grid a {
    margin-bottom: 8px;
    font-size: 0.9rem;
  }

  .footer-bottom {
    margin-top: 24px;
    font-size: 0.88rem;
  }

  .search-footer,
  .featured-cta {
    flex-direction: column;
    align-items: stretch;
  }

  .featured-card {
    padding: 22px;
  }

  .cta-panel {
    grid-template-columns: 1fr;
    text-align: left;
  }
}

@media (max-width: 480px) {
  .main-content {
    padding: 16px 14px 40px;
  }

  .stat-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .stat-card {
    padding: 16px;
    border-radius: 18px;
  }

  .stat-card span {
    font-size: 1.4rem;
  }

  .category-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .category-card {
    padding: 14px;
  }

  .category-card .icon {
    width: 40px;
    height: 40px;
    margin-bottom: 8px;
    font-size: 1rem;
  }

  .section-headline {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .section-headline .btn-pill {
    width: auto;
  }

  .section-headline-title {
    width: 100%;
  }

  .section-headline--accent span:last-child {
    font-size: 1.75rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .footer-grid h3 {
    font-size: 0.98rem;
  }

  .footer-grid a {
    margin-bottom: 6px;
    font-size: 0.88rem;
  }

  .footer-bottom {
    margin-top: 20px;
    font-size: 0.84rem;
  }
}