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

body {
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  background-color: #f5f7fb;
  color: #1e2a3e;
  line-height: 1.5;
  scroll-behavior: smooth;
}

/* 高端金属工业风格 */
:root {
  --primary: #c7582a;
  --primary-dark: #a3441f;
  --secondary: #2c3e50;
  --accent: #f0b27a;
  --dark-bg: #11181c;
  --gray-bg: #f8fafc;
  --card-shadow: 0 20px 35px -12px rgba(0, 0, 0, 0.08), 0 2px 6px rgba(0, 0, 0, 0.02);
  --transition: all 0.3s cubic-bezier(0.2, 0.9, 0.4, 1.1);
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 导航 */
.navbar {
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(2px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid #e9edf2;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

.logo h1 {
  font-size: 1.7rem;
  font-weight: 700;
  background: linear-gradient(135deg, #c7582a, #e07c3e);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  letter-spacing: -0.3px;
}

.logo span {
  font-weight: 500;
  color: #2c3e50;
}

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

.nav-links a {
  text-decoration: none;
  font-weight: 500;
  color: #1f2e3a;
  transition: var(--transition);
  font-size: 1rem;
}

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

.contact-phone {
  background: #f0f2f5;
  padding: 8px 18px;
  border-radius: 40px;
  font-weight: 600;
  color: var(--primary);
  transition: var(--transition);
  border: 1px solid #e2e8f0;
}

.contact-phone:hover {
  background: var(--primary);
  color: white !important;
  border-color: var(--primary);
}

/* 响应式导航 */
@media (max-width: 768px) {
  .nav-container {
    flex-wrap: wrap;
    padding: 15px 20px;
    gap: 12px;
    justify-content: center;
  }


  .nav-links {
    order: 3;
    width: 100%;
    justify-content: space-between;
    gap: 16px;
    margin-top: 8px;
    display: none;
  }

  .contact-phone {
    order: 2;
    font-size: 0.9rem;
    padding: 6px 14px;
  }

  .product-name {
    font-size: 1.4rem;
  }

  .logo h1 {
    margin-bottom: 0;
    font-size: 1.6rem;
  }

  .section-title {
    font-size: 1.7rem;
  }

  .about-contact {
    font-size: 1.2rem;
  }

  .about-text p {
    font-size: 1.1rem;
  }
}

/* Banner 文字动效 + 背景 */
.hero {
  background: linear-gradient(125deg, #0b1a24 0%, #162b35 100%);
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  width: 200%;
  height: 200%;
  top: -50%;
  left: -50%;
  background: radial-gradient(circle at 30% 40%, rgba(199, 88, 42, 0.12) 0%, rgba(0, 0, 0, 0) 70%);
  animation: pulseSlow 8s infinite alternate;
}

@keyframes pulseSlow {
  0% {
    opacity: 0.4;
    transform: scale(1);
  }

  100% {
    opacity: 0.8;
    transform: scale(1.05);
  }
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
}

.hero h2 {
  font-size: 3.2rem;
  font-weight: 800;
  color: white;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
  animation: fadeUp 0.8s ease-out;
}

.hero .highlight {
  background: linear-gradient(120deg, #f3a683, #e07c3e);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
}

.hero p {
  font-size: 1.2rem;
  color: #cbd5e1;
  max-width: 680px;
  margin: 0 auto 32px;
  animation: fadeUp 0.8s 0.1s both;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 25px;
  flex-wrap: wrap;
  animation: fadeUp 0.8s 0.2s both;
}

.hero-stats div {
  font-size: 1.1rem;
  font-weight: 500;
  color: #facc9f;
  background: rgba(255, 255, 255, 0.08);
  padding: 8px 18px;
  border-radius: 40px;
  backdrop-filter: blur(4px);
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

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

@media (max-width: 768px) {
  .hero {
    padding: 70px 0;
  }

  .hero h2 {
    font-size: 1.6rem;
  }

  .hero-stats div {
    font-size: 1rem;
  }


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


  .hero-stats {
    gap: 20px;
  }
}

/* 公司介绍区域 */
.about-section {
  padding: 60px 0;
  background: white;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-text h3 {
  font-size: 2rem;
  font-weight: 700;
  color: #0f2b35;
  border-left: 5px solid var(--primary);
  padding-left: 20px;
  margin-bottom: 28px;
}

.about-text p {
  margin-bottom: 20px;
  color: #2c3e4e;
  line-height: 1.6;
}

.about-contact {
  background: #f0f4f9;
  padding: 15px 20px;
  border-radius: 28px;
  margin: 0 0 12px;
  display: inline-block;
  font-weight: 600;
}

.about-contact a {
  color: var(--primary-dark);
  text-decoration: none;
  font-size: 1.2rem;
}

.about-img img {
  width: 100%;
  max-width: 600px;
  height: auto;
  border-radius: 28px;
  box-shadow: var(--card-shadow);
  transition: transform 0.35s;
}

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

@media (max-width: 992px) {
  .about-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 32px;
  }

  .about-text h3 {
    text-align: left;
  }

  .about-img img {
    max-width: 100%;
  }
}

/* 产品系列通用 */
.products-section {
  padding: 60px 0;
  background: #fefcf8;
}

.section-title {
  text-align: center;
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: #1f2e3a;
}

.section-sub {
  text-align: center;
  color: #5d6f7f;
  margin-bottom: 56px;
  font-size: 1.1rem;
}


.category-title {
  font-size: 1.8rem;
  font-weight: 600;
  margin-bottom: 32px;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--primary);
  display: inline-block;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px 24px;
}

.product-card {
  background: white;
  border-radius: 24px;
  overflow: hidden;
  transition: var(--transition);
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.03);
  border: 1px solid #edf2f7;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 38px -16px rgba(0, 0, 0, 0.12);
  border-color: #ffe0cc;
}

.product-img {
  aspect-ratio: 1 / 1;
  width: 100%;
  object-fit: cover;
  background: #f3f6fa;
  transition: transform 0.5s;
}

.product-card:hover .product-img {
  transform: scale(1.02);
}

.product-name {
  padding: 18px 16px 20px;
  font-weight: 600;
  font-size: 1rem;
  text-align: center;
  color: #1f2e3a;
  border-top: 1px solid #f0f2f5;
  background: #ffffff;
  letter-spacing: -0.2px;
}

/* 移动端响应式产品网格 */
@media (max-width: 1024px) {
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .product-name {
    font-size: 1.2rem;
  }

  .nav-links a {
    display: none;
  }

  .nav-links a.contact-phone {
    display: block;
  }
}


@media (max-width: 640px) {
  .product-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .nav-links a.contact-phone {
    display: none;
  }

}

/* 荣誉资质 + 客户条 */
.cert-bar {
  background: #ffffff;
  padding: 40px 0;
  border-top: 1px solid #eef2f6;
  border-bottom: 1px solid #eef2f6;
}

.cert-flex {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 32px;
  align-items: center;
}

.cert-item {
  background: #f9fafc;
  padding: 10px 22px;
  border-radius: 40px;
  font-weight: 500;
  color: #2c3e50;
  font-size: 0.9rem;
}

/* 底部版权 */
.footer {
  background: #0f1a21;
  color: #b9c7d4;
  padding: 48px 0 32px;
  margin-top: 20px;
}

.footer-inner {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 24px;
  align-items: center;
}

.copyright {
  font-size: 1rem;
}

.copyright a,
.footer-links a {
  color: #e0aa7a;
  text-decoration: none;
}


/* 移动端一键拨号按钮 */
.call-button {
  position: fixed;
  bottom: 28px;
  right: 28px;
  background: var(--primary);
  width: 58px;
  height: 58px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 20px rgba(199, 88, 42, 0.4);
  z-index: 999;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
}

.call-button:hover {
  transform: scale(1.06);
  background: var(--primary-dark);
}

.call-button svg {
  width: 28px;
  height: 28px;
  fill: white;
}

@media (max-width:768px) {
  .cert-item {
    font-size: 1.2rem;
  }

  .copyright{
    font-size: 1.1rem;
  }
}


@media (min-width: 768px) {
  .call-button {
    width: 64px;
    height: 64px;
  }



}

/* 辅助样式 */
a {
  text-decoration: none;
}

.text-accent {
  color: var(--primary);
}

button {
  background: none;
  border: none;
}