/* ==========================================
   发烧友页面专用样式
   Audiophile Page Specific Styles
   ========================================== */

/* 发烧友专属色系 */
:root {
  --aud-brown: #8B4513;
  --aud-brown-light: #A0522D;
  --aud-brown-dark: #5D2E0C;
  --aud-amber: #FFBF00;
  --aud-amber-light: #FFD966;
  --aud-amber-dark: #CC9900;
  --aud-silver: #C0C0C0;
  --aud-silver-light: #E8E8E8;
  --aud-silver-dark: #808080;
  --aud-warm: #F5DEB3;
  --aud-warm-dark: #DEB887;
  --aud-cream: #FFFDD0;
  --aud-gold: #DAA520;
}

/* ==========================================
   Hero Section - 发烧友风格
   ========================================== */
.hero-audiophile {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-audiophile .hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero-audiophile .hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-audiophile .hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    rgba(93, 46, 12, 0.85) 0%,
    rgba(139, 69, 19, 0.75) 50%,
    rgba(160, 82, 45, 0.65) 100%
  );
}

.hero-audiophile .hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 0 20px;
  max-width: 900px;
  margin: 0 auto;
}

.hero-audiophile .hero-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--aud-amber), var(--aud-gold));
  color: var(--aud-brown-dark);
  padding: 8px 24px;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 24px;
  box-shadow: 0 4px 15px rgba(255, 191, 0, 0.3);
}

.hero-audiophile .hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 24px;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero-audiophile .hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: rgba(255, 255, 255, 0.9);
  max-width: 700px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

.hero-audiophile .hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

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

.hero-audiophile .stat-number {
  display: block;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--aud-amber);
  line-height: 1;
  margin-bottom: 8px;
}

.hero-audiophile .stat-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.8);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.hero-audiophile .hero-actions {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.hero-audiophile .btn-primary {
  background: linear-gradient(135deg, var(--aud-amber), var(--aud-gold));
  color: var(--aud-brown-dark);
  border: none;
  box-shadow: 0 4px 20px rgba(255, 191, 0, 0.4);
}

.hero-audiophile .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(255, 191, 0, 0.5);
}

.hero-audiophile .btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.6);
}

.hero-audiophile .btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
}

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
}

.scroll-indicator svg {
  width: 32px;
  height: 32px;
  color: rgba(255, 255, 255, 0.7);
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
  40% { transform: translateX(-50%) translateY(-10px); }
  60% { transform: translateX(-50%) translateY(-5px); }
}

/* ==========================================
   Section通用样式
   ========================================== */
.section {
  padding: 100px 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-tag {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--aud-amber-dark);
  text-transform: uppercase;
  letter-spacing: 3px;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--aud-brown-dark);
  margin-bottom: 16px;
  line-height: 1.3;
}

.section-desc {
  font-size: 1.125rem;
  color: #666;
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.8;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ==========================================
   Why CGN Section - 为什么选择我们
   ========================================== */
.why-cgn {
  background: linear-gradient(180deg, #FFF 0%, #F9F5F0 100%);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.feature-card {
  background: #fff;
  border-radius: 16px;
  padding: 32px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(139, 69, 19, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 40px rgba(139, 69, 19, 0.15);
}

.feature-icon {
  width: 100%;
  height: 160px;
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 24px;
}

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

.feature-card:hover .feature-icon img {
  transform: scale(1.05);
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--aud-brown-dark);
  margin-bottom: 12px;
}

.feature-desc {
  font-size: 0.95rem;
  color: #666;
  line-height: 1.7;
}

/* ==========================================
   Ecosystem Section - 产品生态图谱
   ========================================== */
.ecosystem {
  background: linear-gradient(135deg, #1a1a1a 0%, #2d2520 100%);
  color: #fff;
}

.ecosystem .section-tag {
  color: var(--aud-amber);
}

.ecosystem .section-title {
  color: #fff;
}

.ecosystem .section-desc {
  color: rgba(255, 255, 255, 0.7);
}

.ecosystem-map {
  position: relative;
  padding: 60px 0;
}

.ecosystem-center {
  display: flex;
  justify-content: center;
  margin-bottom: 40px;
}

.ecosystem-core {
  position: relative;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  overflow: hidden;
  box-shadow: 0 0 60px rgba(255, 191, 0, 0.3);
}

.ecosystem-core img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ecosystem-core span {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(139, 69, 19, 0.9);
  color: #fff;
  padding: 8px 20px;
  border-radius: 20px;
  font-weight: 600;
  white-space: nowrap;
}

.ecosystem-rings {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  margin-bottom: 40px;
}

.ring {
  display: flex;
  justify-content: center;
  gap: 30px;
  flex-wrap: wrap;
}

.ring-item {
  background: rgba(255, 191, 0, 0.1);
  border: 1px solid rgba(255, 191, 0, 0.3);
  color: var(--aud-amber);
  padding: 10px 24px;
  border-radius: 30px;
  font-size: 14px;
  transition: all 0.3s ease;
}

.ring-item:hover {
  background: rgba(255, 191, 0, 0.2);
  border-color: var(--aud-amber);
}

.ring-1 .ring-item {
  font-weight: 600;
}

.ring-2 .ring-item {
  font-size: 13px;
  opacity: 0.9;
}

.ring-3 .ring-item {
  font-size: 12px;
  opacity: 0.7;
}

.ecosystem-images {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.eco-image-item {
  border-radius: 12px;
  overflow: hidden;
  height: 180px;
}

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

.eco-image-item:hover img {
  transform: scale(1.1);
}

/* ==========================================
   Product Navigation Section - 产品标签导航
   ========================================== */
.product-nav {
  background: #fff;
}

.tabs-container {
  width: 100%;
}

.tabs-nav {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 48px;
  flex-wrap: wrap;
  border-bottom: 2px solid #f0f0f0;
  padding-bottom: 0;
}

.tab-btn {
  background: transparent;
  border: none;
  padding: 16px 32px;
  font-size: 1rem;
  font-weight: 500;
  color: #666;
  cursor: pointer;
  position: relative;
  transition: all 0.3s ease;
}

.tab-btn::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--aud-amber);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.tab-btn:hover {
  color: var(--aud-brown);
}

.tab-btn.active {
  color: var(--aud-brown-dark);
}

.tab-btn.active::after {
  transform: scaleX(1);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
  animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Products Grid - 主力方案 */
.products-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.product-card {
  display: flex;
  background: #fff;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
}

.product-image {
  flex: 0 0 40%;
  height: 300px;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-content {
  flex: 1;
  padding: 28px;
  display: flex;
  flex-direction: column;
}

.product-tag {
  display: inline-block;
  background: linear-gradient(135deg, var(--aud-warm), var(--aud-amber-light));
  color: var(--aud-brown-dark);
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 12px;
  width: fit-content;
}

.product-title {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--aud-brown-dark);
  margin-bottom: 12px;
}

.product-desc {
  font-size: 0.9rem;
  color: #666;
  line-height: 1.7;
  margin-bottom: 16px;
}

.product-features {
  list-style: none;
  padding: 0;
  margin: 0 0 20px 0;
}

.product-features li {
  position: relative;
  padding-left: 20px;
  font-size: 0.85rem;
  color: #555;
  margin-bottom: 6px;
}

.product-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--aud-amber-dark);
  font-weight: bold;
}

.product-content .btn {
  margin-top: auto;
  width: fit-content;
}

/* Niche Grid - 新锐方案 */
.niche-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.niche-card {
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  transition: transform 0.3s ease;
}

.niche-card:hover {
  transform: translateY(-4px);
}

.niche-card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.niche-card h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--aud-brown-dark);
  padding: 16px 16px 8px;
}

.niche-card p {
  font-size: 0.85rem;
  color: #666;
  padding: 0 16px 16px;
  line-height: 1.6;
}

/* Specs Section - 技术规格 */
.specs-section {
  margin-bottom: 48px;
}

.specs-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--aud-brown-dark);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--aud-warm);
}

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

.spec-card {
  background: #f9f9f9;
  border-radius: 12px;
  padding: 24px;
  transition: background 0.3s ease;
}

.spec-card:hover {
  background: #f0f0f0;
}

.spec-card img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 16px;
}

.spec-card h4 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--aud-brown-dark);
  margin-bottom: 12px;
}

.spec-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.spec-card li {
  font-size: 0.9rem;
  color: #555;
  margin-bottom: 8px;
  padding-left: 16px;
  position: relative;
}

.spec-card li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--aud-amber-dark);
}

.spec-card p {
  font-size: 0.9rem;
  color: #555;
  line-height: 1.6;
}

/* Strategy Section - 发行策略 */
.strategy-content {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.strategy-item {
  display: flex;
  gap: 40px;
  align-items: center;
}

.strategy-item.reverse {
  flex-direction: row-reverse;
}

.strategy-item img {
  flex: 0 0 45%;
  height: 280px;
  border-radius: 16px;
  object-fit: cover;
}

.strategy-info {
  flex: 1;
}

.strategy-info h3 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--aud-brown-dark);
  margin-bottom: 16px;
}

.strategy-info p {
  font-size: 1rem;
  color: #555;
  line-height: 1.8;
  margin-bottom: 16px;
}

.strategy-info ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.strategy-info li {
  position: relative;
  padding-left: 24px;
  font-size: 0.95rem;
  color: #555;
  margin-bottom: 8px;
}

.strategy-info li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--aud-amber-dark);
}

/* ==========================================
   Global Market Section - 全球市场
   ========================================== */
.global-market {
  background: linear-gradient(180deg, #F9F5F0 0%, #FFF 100%);
}

.global-content {
  display: flex;
  gap: 48px;
  align-items: flex-start;
}

.global-image {
  flex: 0 0 50%;
  border-radius: 16px;
  overflow: hidden;
}

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

.global-regions {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.region-card {
  background: #fff;
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
}

.region-card h4 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--aud-brown-dark);
  margin-bottom: 12px;
}

.region-card p {
  font-size: 0.9rem;
  color: #666;
  line-height: 1.6;
  margin-bottom: 6px;
}

/* ==========================================
   Process Section - 定制流程
   ========================================== */
.process {
  background: #fff;
}

.process-image {
  margin-bottom: 48px;
  border-radius: 16px;
  overflow: hidden;
}

.process-image img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

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

.step-item::after {
  content: '';
  position: absolute;
  top: 30px;
  right: -16px;
  width: 32px;
  height: 2px;
  background: var(--aud-warm);
}

.step-item:last-child::after {
  display: none;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--aud-brown), var(--aud-brown-light));
  color: #fff;
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.step-item h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--aud-brown-dark);
  margin-bottom: 8px;
}

.step-item p {
  font-size: 0.85rem;
  color: #666;
  line-height: 1.6;
}

/* ==========================================
   FAQ Section
   ========================================== */
.faq {
  background: linear-gradient(180deg, #F9F5F0 0%, #FFF 100%);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: #fff;
  border-radius: 12px;
  margin-bottom: 16px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: 1rem;
  font-weight: 500;
  color: var(--aud-brown-dark);
  transition: background 0.3s ease;
}

.faq-question:hover {
  background: #f9f9f9;
}

.faq-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
  max-height: 300px;
}

.faq-answer p {
  padding: 0 24px 20px;
  font-size: 0.95rem;
  color: #555;
  line-height: 1.8;
}

/* ==========================================
   CTA Section - 底部行动召唤
   ========================================== */
.cta-audiophile {
  position: relative;
  padding: 120px 0;
  overflow: hidden;
}

.cta-audiophile .cta-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.cta-audiophile .cta-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cta-audiophile .cta-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    rgba(93, 46, 12, 0.92) 0%,
    rgba(139, 69, 19, 0.88) 100%
  );
}

.cta-audiophile .cta-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: #fff;
}

.cta-audiophile .cta-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 20px;
}

.cta-audiophile .cta-desc {
  font-size: 1.125rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto 32px;
  line-height: 1.8;
}

.cta-audiophile .cta-actions {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.cta-audiophile .btn-primary {
  background: linear-gradient(135deg, var(--aud-amber), var(--aud-gold));
  color: var(--aud-brown-dark);
}

.cta-audiophile .btn-outline {
  border-color: rgba(255, 255, 255, 0.6);
  color: #fff;
}

.cta-audiophile .btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
}

.cta-contact {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1rem;
  opacity: 0.9;
}

.contact-item svg {
  width: 24px;
  height: 24px;
}

/* ==========================================
   Buttons
   ========================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.1rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--aud-brown), var(--aud-brown-light));
  color: #fff;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(139, 69, 19, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--aud-brown);
  border-color: var(--aud-brown);
}

.btn-outline:hover {
  background: var(--aud-brown);
  color: #fff;
}

/* ==========================================
   Footer
   ========================================== */
.footer {
  background: #1a1a1a;
  color: #fff;
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
  height: 40px;
  margin-bottom: 20px;
}

.footer-desc {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  transition: background 0.3s ease;
}

.social-link:hover {
  background: var(--aud-amber);
}

.social-link svg {
  width: 20px;
  height: 20px;
}

.footer-links h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: #fff;
}

.footer-links ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: var(--aud-amber);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer-legal {
  display: flex;
  gap: 24px;
}

.footer-legal a {
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-legal a:hover {
  color: var(--aud-amber);
}

/* ==========================================
   Header
   ========================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

.header-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-img {
  height: 36px;
}

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

.nav-link {
  color: #333;
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.3s ease;
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--aud-brown);
}

.nav-dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  padding: 8px 0;
  min-width: 160px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.3s ease;
}

.nav-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: block;
  padding: 10px 20px;
  color: #333;
  text-decoration: none;
  font-size: 0.9rem;
  transition: background 0.3s ease;
}

.dropdown-item:hover,
.dropdown-item.active {
  background: #f5f5f5;
  color: var(--aud-brown);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.lang-selector {
  position: relative;
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: 1px solid #ddd;
  padding: 8px 16px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  color: #333;
}

.lang-arrow {
  width: 16px;
  height: 16px;
  transition: transform 0.3s ease;
}

.lang-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  padding: 8px 0;
  min-width: 120px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.3s ease;
}

.lang-selector:hover .lang-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-selector:hover .lang-arrow {
  transform: rotate(180deg);
}

.lang-option {
  display: block;
  padding: 8px 16px;
  color: #333;
  text-decoration: none;
  font-size: 0.9rem;
  transition: background 0.3s ease;
}

.lang-option:hover,
.lang-option.active {
  background: #f5f5f5;
  color: var(--aud-brown);
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 5px;
}

.mobile-menu-btn span {
  width: 24px;
  height: 2px;
  background: #333;
  transition: all 0.3s ease;
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 1024px) {
  .products-grid {
    grid-template-columns: 1fr;
  }
  
  .niche-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .specs-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .process-steps .step-item:nth-child(2)::after {
    display: none;
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .header-container {
    height: 60px;
  }
  
  .nav {
    display: none;
  }
  
  .mobile-menu-btn {
    display: flex;
  }
  
  .hero-audiophile .hero-stats {
    flex-direction: column;
    gap: 24px;
  }
  
  .ecosystem-images {
    grid-template-columns: 1fr;
  }
  
  .product-card {
    flex-direction: column;
  }
  
  .product-image {
    flex: none;
    height: 200px;
  }
  
  .niche-grid {
    grid-template-columns: 1fr;
  }
  
  .specs-grid {
    grid-template-columns: 1fr;
  }
  
  .strategy-item,
  .strategy-item.reverse {
    flex-direction: column;
  }
  
  .strategy-item img {
    flex: none;
    width: 100%;
    height: 200px;
  }
  
  .global-content {
    flex-direction: column;
  }
  
  .global-image {
    flex: none;
    width: 100%;
  }
  
  .process-steps {
    grid-template-columns: 1fr;
  }
  
  .step-item::after {
    display: none;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
  
  .cta-contact {
    flex-direction: column;
    gap: 16px;
  }
}

@media (max-width: 480px) {
  .section {
    padding: 60px 0;
  }
  
  .tabs-nav {
    flex-wrap: wrap;
    gap: 4px;
  }
  
  .tab-btn {
    padding: 12px 16px;
    font-size: 0.9rem;
  }
  
  .cta-audiophile .cta-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
  }
}