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

body {
  font-family: 'Inter', sans-serif;
  background: #FEFEFB;
  color: #2D3A32;
  line-height: 1.5;
  scroll-behavior: smooth;
}

.icon {
  width: 1em;
  height: 1em;
  fill: currentColor;
  vertical-align: middle;
  overflow: hidden;
}

.container {
  max-width: 1380px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 头部导航 */
.header {
  background: #1E4F46;
  color: white;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 0;
  flex-wrap: wrap;
}

.logo h1 {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.logo span {
  font-weight: 400;
  font-size: 1.2rem;
  color: #EAD68C;
}

.nav-contact .phone-number {
  background: rgba(255, 255, 255, 0.12);
  padding: 8px 22px;
  border-radius: 40px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: 0.2s;
}

.phone-number .icon {
  color: #EAD68C;
}

.phone-number a {
  color: white;
  text-decoration: none;
  font-size: 1rem;
}

.phone-number:hover {
  background: #EAD68C;
}

.phone-number:hover a,
.phone-number:hover .icon {
  color: #1E4F46;
}

/* 移动端拨号按钮 */
.mobile-phone-btn {
  position: fixed;
  bottom: 28px;
  right: 28px;
  background: #EAD68C;
  color: #1E4F46;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
  z-index: 999;
  transition: 0.25s;
  text-decoration: none;
}

.mobile-phone-btn i {
  font-size: 26px;
}

.mobile-phone-btn:hover {
  background: #cdb86f;
  transform: scale(1.05);
}

@media (min-width: 769px) {
  .mobile-phone-btn {
    display: none;
  }
}

@media (max-width: 768px) {
  .nav-contact .phone-number {
        padding: 8px 10px;
  }



  .logo h1 {
    font-size: 1.45rem;
  }

  .logo span {
    font-size: 1rem;
  }
}

/* Banner 区域 新材料科技感 */
.hero {
  background: linear-gradient(115deg, #2F6C5C 0%, #1C443B 100%);
  padding: 90px 0;
  position: relative;
  overflow: hidden;
}

.hero:before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('https://www.transparenttextures.com/patterns/carbon-fibre.png');
  opacity: 0.08;
  pointer-events: none;
}

.hero-content {
  text-align: center;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.hero-content h2 {
  font-size: 2.1rem;
  font-weight: 800;
  color: #FFF;
  margin-bottom: 20px;
  animation: fadeUp 0.7s ease-out;
}

.hero-highlight {
  color: #F2E5A8;
  margin-bottom: 5px;
  display: inline-block;
}

.hero-desc {
  font-size: 1.2rem;
  color: #E2F0EB;
  margin-bottom: 32px;
  animation: fadeUp 0.9s ease-out;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
  animation: fadeUp 1.1s ease-out;
}

.stat-item {
  color: white;
}

.stat-number {
  font-size: 1.6rem;
  font-weight: 800;
  color: #F2E5A8;
}

.stat-label {
  font-size: 1rem;
  opacity: 0.85;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(32px);
  }

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

@media (max-width: 768px) {
  .hero {
    padding: 60px 20px;
  }

  .section-title {
    font-size: 1.6rem !important;
  }

  .hero-content h2 {
    font-size: 2rem;
  }

  .hero-desc {
    font-size: 1rem;
  }
}

/* 通用板块 */
.section {
  padding: 55px 0;
}

.section-title {
  font-size: 2.4rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 18px;
  color: #2B6E5B;
}

.section-sub {
  text-align: center;
  color: #6F8B7E;
  max-width: 720px;
  margin: 0 auto 50px auto;
  font-size: 1.05rem;
}

/* 公司介绍 + 右侧图片 */
.about-grid {
  display: flex;
  gap: 48px;
  padding: 0 15px;
  align-items: flex-start;
  flex-wrap: wrap;
}

.about-text {
  flex: 1.2;
}

.about-image {
  flex: 0.8;
}

.about-image img {
  width: 100%;
  height: auto;
  border-radius: 28px;
  box-shadow: 0 24px 36px -14px rgba(0, 0, 0, 0.15);
  transition: transform 0.3s;
}

.about-image img:hover {
  transform: scale(1.01);
}

.about-text p {
  margin-bottom: 1rem;
  color: #2A473D;
  line-height: 1.65;
}

.contact-inline {
  background: #F0F5EB;
  padding: 16px 26px;
  border-radius: 40px;
  margin: 28px 0 16px;
  display: inline-flex;
  gap: 5px;
  align-items: center;
  border-left: 6px solid #EAD68C;
  font-weight: 500;
}

.contact-inline i {
  color: #B59042;
  margin-right: 12px;
}

.contact-inline a {
  text-decoration: none;
  color: #1E4F46;
  font-weight: 700;
}

@media (max-width: 992px) {
  .about-grid {
    flex-direction: column;
  }

  .about-image {
    order: 2;
    max-width: 520px;
    margin: 0 auto;
  }

  .about-text {
    order: 1;
  }
}

/* 产品选项卡 */
.product-section {
  background: #FEFEFA;
}

.product-tabs {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.tab-btn {
  background: #EAF1E9;
  border: none;
  padding: 10px 24px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 48px;
  cursor: pointer;
  transition: 0.2s;
  color: #316454;
}

.tab-btn.active {
  background: #316454;
  color: white;
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.08);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.product-card {
  background: white;
  border-radius: 28px;
  overflow: hidden;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.04);
  transition: all 0.3s;
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 22px 36px -12px rgba(0, 0, 0, 0.12);
}

.product-img {
  aspect-ratio: 1 / 1;
  width: 100%;
  object-fit: cover;
  display: block;
}

.product-info {
  padding: 18px 12px 20px;
  text-align: center;
}

.product-info h4 {
  font-size: 1rem;
  font-weight: 700;
  color: #2F7A64;
}

@media (max-width: 1024px) {
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
}

@media (max-width: 560px) {

  .tab-btn{
    padding: 6px 10px;
    font-size: 1rem;
  }

  .product-info h4{
    font-size: 1.25rem;
  }

}

/* 友情链接 */
.friend-links-area {
  background: #EDF4EE;
  padding: 28px 0;
  border-top: 1px solid #DDE8E0;
}

.friend-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 28px;
}

.friend-links a {
  text-decoration: none;
  color: #4D7668;
  font-weight: 500;
  transition: 0.2s;
  font-size: 0.9rem;
}

.friend-links a:hover {
  color: #DFC77A;
  text-decoration: underline;
}

/* Footer */
.footer {
  background: #1B4138;
  color: #CEE3DB;
  padding: 32px 0;
  text-align: center;
  font-size: 0.85rem;
}

.footer p {
  margin-bottom: 8px;
  font-size: 1rem;
}

@media (max-width: 768px) {
  .friend-links a{
    font-size: 1.1rem;
  }
}