:root {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --surface: rgba(255, 255, 255, 0.05);
  --surface-hover: rgba(255, 255, 255, 0.08);
  --accent: #f59e0b;
  --accent-secondary: #fbbf24;
  --accent-tertiary: #fcd34d;
  --success: #10b981;
  --warning: #f87171;
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.8);
  --text-muted: rgba(255, 255, 255, 0.5);
  --border: rgba(245, 158, 11, 0.2);
  --border-accent: rgba(245, 158, 11, 0.3);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

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

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

body {
  font-family: var(--font-stack);
  background: var(--bg-primary);
  color: var(--text-secondary);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

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

.section {
  padding: 100px 32px;
  max-width: 1200px;
  margin: 0 auto;
}

.section-label {
  font-size: 14px;
  letter-spacing: 4px;
  color: var(--accent-secondary);
  text-transform: uppercase;
  margin-bottom: 16px;
  text-align: center;
  font-weight: 600;
}

.section-title {
  font-size: 36px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 24px;
  text-align: center;
  line-height: 1.2;
}

.bg-secondary { background: var(--bg-secondary); }

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 40px;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.site-nav.scrolled {
  padding: 16px 40px;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 20px;
  color: var(--text-primary);
}

.nav-logo {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--bg-primary);
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 15px;
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-secondary));
  transition: width 0.3s ease;
}

.nav-links a:hover {
  color: var(--text-primary);
}

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

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 28px;
  cursor: pointer;
  line-height: 1;
}

@media (max-width: 767px) {
  .nav-links {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    padding: 24px;
    flex-direction: column;
    gap: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    padding: 16px 24px;
  }

  .section {
    padding: 60px 20px;
  }

  .section-title {
    font-size: 28px;
  }
}

#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  padding: 120px 32px 80px;
  position: relative;
  overflow: hidden;
}

#hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.1) 0%, transparent 50%);
  animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.1); opacity: 0.8; }
}

.hero-inner {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content {
  text-align: left;
}

.hero-title {
  font-size: 52px;
  font-weight: 900;
  color: var(--text-primary);
  line-height: 1.1;
  margin-bottom: 24px;
}

.gradient-text {
  background: linear-gradient(90deg, var(--accent), var(--accent-secondary), var(--accent-tertiary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% auto;
  animation: gradientMove 3s ease infinite;
}

@keyframes gradientMove {
  0%, 100% { background-position: 0% center; }
  50% { background-position: 100% center; }
}

.hero-desc {
  font-size: 18px;
  line-height: 1.8;
  margin-bottom: 40px;
  color: var(--text-secondary);
}

.hero-desc strong { color: var(--text-primary); font-weight: 600; }

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: flex-start;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image-wrapper {
  width: 100%;
  max-width: 400px;
  aspect-ratio: 1;
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.2) 0%, rgba(251, 191, 36, 0.1) 100%);
  border-radius: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 120px;
  border: 2px solid var(--border);
  position: relative;
  overflow: hidden;
}

.hero-image-wrapper::before {
  content: '';
  position: absolute;
  inset: -2px;
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary), var(--accent-tertiary));
  border-radius: 24px;
  z-index: -1;
  opacity: 0.5;
  animation: rotate 10s linear infinite;
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  color: var(--bg-primary);
  padding: 14px 32px;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 16px;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(245, 158, 11, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(245, 158, 11, 0.4);
  color: var(--bg-primary);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 2px solid var(--accent);
  color: var(--accent);
  padding: 12px 30px;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 600;
  transition: all 0.3s ease;
  background: transparent;
}

.btn-outline:hover {
  background: var(--accent);
  color: var(--bg-primary);
  transform: translateY(-2px);
}

.hero-stats {
  display: flex;
  justify-content: flex-start;
  gap: 48px;
  flex-wrap: wrap;
}

.stat {
  text-align: left;
  padding: 16px 0;
}

.stat-num {
  display: block;
  font-size: 48px;
  font-weight: 900;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 500;
}

@media (max-width: 992px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

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

  .hero-cta {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
  }

  .stat {
    text-align: center;
  }
}

@media (max-width: 767px) {
  #hero {
    padding: 100px 20px 60px;
    min-height: auto;
  }

  .hero-title {
    font-size: 36px;
  }

  .hero-desc {
    font-size: 16px;
  }

  .hero-stats {
    gap: 32px;
  }

  .stat-num {
    font-size: 36px;
  }

  .hero-image-wrapper {
    max-width: 280px;
    font-size: 80px;
  }
}

.hl-accent {
  color: var(--accent);
  font-weight: 600;
}

.about-desc {
  font-size: 18px;
  line-height: 2;
  margin-bottom: 24px;
  text-align: center;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.about-location {
  font-size: 15px;
  color: var(--text-muted);
  text-align: center;
  font-weight: 500;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: linear-gradient(180deg, rgba(245, 158, 11, 0.1) 0%, transparent 100%);
  border: 1px solid var(--border);
  padding: 40px 32px;
  border-radius: var(--radius-lg);
  text-align: center;
  transition: all 0.3s ease;
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: var(--accent);
  box-shadow: 0 20px 40px rgba(245, 158, 11, 0.15);
}

.service-icon {
  font-size: 48px;
  margin-bottom: 20px;
  display: inline-block;
}

.service-card h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.service-card p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-secondary);
}

@media (max-width: 992px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  .services-grid {
    grid-template-columns: 1fr;
  }
}

.cases-section {
  background: var(--bg-secondary);
}

.case-category {
  margin-bottom: 60px;
}

.case-category-title {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 32px;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.case-category-title::before,
.case-category-title::after {
  content: '';
  width: 40px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

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

.case-card {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s ease;
  border: 1px solid var(--border);
}

.case-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
  border-color: var(--accent);
}

.case-card img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.case-card-content {
  padding: 28px;
}

.case-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.case-card p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-secondary);
}

@media (max-width: 992px) {
  .cases-grid {
    grid-template-columns: 1fr;
  }
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-subtitle {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 24px;
}

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

.form-group label {
  display: block;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 8px;
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  width: 100%;
  background: var(--bg-secondary);
  border: 2px solid rgba(255, 255, 255, 0.1);
  padding: 14px 16px;
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 15px;
  font-family: var(--font-stack);
  outline: none;
  transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  background: var(--bg-primary);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.btn-submit {
  width: 100%;
  margin-top: 8px;
  font-size: 16px;
  padding: 16px 32px;
}

.contact-info {
  background: linear-gradient(180deg, rgba(245, 158, 11, 0.1) 0%, transparent 100%);
  border: 1px solid var(--border);
  padding: 32px;
  border-radius: var(--radius-lg);
}

.contact-info p {
  font-size: 16px;
  line-height: 2;
  margin-bottom: 16px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.contact-info strong {
  color: var(--text-primary);
  font-weight: 600;
  min-width: 80px;
}

.site-footer {
  text-align: center;
  padding: 40px 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: var(--bg-secondary);
}

.site-footer p {
  font-size: 14px;
  color: var(--text-muted);
}

.footer-note {
  font-size: 13px;
  margin-top: 8px;
  opacity: 0.6;
}

.footer-note a {
  color: var(--text-muted);
  text-decoration: underline;
}

.footer-note a:hover {
  color: var(--accent);
}

@media (max-width: 767px) {
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

.conclusion-section {
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.conclusion-desc {
  font-size: 18px;
  line-height: 2;
  color: var(--text-secondary);
  text-align: center;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}