* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Georgia, 'Times New Roman', Times, serif;
}

body {
  font-family: 'Montserrat', sans-serif;
  color: #333333;
  background-color: #FCFCFC;
  line-height: 1.6;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
}

.section-title {
  font-size: 32px;
  font-weight: 600;
  text-align: center;
  margin-bottom: 40px;
  color: #8b4538;
}

/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: #FFFFFF;
  box-shadow: 0 1px 4px rgba(0,0,0,0.05);
  z-index: 999;
  padding: 20px 0;
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo a {
  font-size: 20px;
  font-weight: 700;
  color: #8B4513;
  letter-spacing: 0.5px;
}

.nav ul {
  display: flex;
  gap: 30px;
  align-items: center;
  text-align: center;
  
}

.nav a {
  font-size: 15px;
  font-weight: 500;
  color: #333333;
  transition: color 0.2s;
}

.nav a:hover {
  color: #8B4513;
}

.btn-contact {
  background-color: #8B4513;
  color: #fff !important;
  padding: 8px 18px;
  border-radius: 4px;
  font-weight: 500;
}

.btn-contact:hover {
  background-color: #6d360f;
}

.toggle {
  display: none;
}

/* Hero Banner */
.hero {
  min-height: 650px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background-image: url('../images/banner.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
  color: white;
  padding-top: 100px;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 1;
}

.hero .container {
  position: relative;
  z-index: 2;
}

.hero h1 {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 16px;
}

.hero p {
  font-size: 18px;
  max-width: 700px;
  margin: 0 auto 32px;
  opacity: 0.95;
}

.hero-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  background-color: #8B4513;
  color: rgb(248, 243, 243);
  padding: 12px 26px;
  border-radius: 4px;
  font-weight: 500;
  transition: background 0.2s;
}

.btn-primary:hover {
  background-color: #6d360f;
}

.btn-outline {
  border: 2px solid white;
  color: white;
  padding: 12px 26px;
  border-radius: 4px;
  font-weight: 500;
}

.btn-sm {
  display: inline-block;
  padding: 7px 16px;
  background-color: #8B4513;
  color: white;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 500;
}

/* Difference Section */
.difference {
  padding: 80px 0;
  background-color: #fdfbf7;
}

.diff-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.diff-item {
  text-align: center;  
}

.diff-item h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
  color: #8b4538;
}

.diff-item p {
  font-size: 15px;
  color: #555;
}

/* Products */
.products {
  padding: 80px 0;
  background-color: #f5f1e9;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.product-card {
  text-align: center;
}

.product-img {
  height: 240px;
  overflow: hidden;
  border-radius: 4px;
  margin-bottom: 20px;
  background: #eee;
}

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

.product-card h3 {
  font-size: 19px;
  font-weight: 600;
  margin-bottom: 8px;
  color: #8b4538;
}

.product-card p {
  font-size: 15px;
  color: #555;
  margin-bottom: 16px;
}

/* Services */
.services {
  padding: 80px 0;
  background-color: #fdfbf7;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.service-item {
  position: relative;
  padding-left: 50px;
}

.service-item .num {
  position: absolute;
  left: 0;
  top: 0;
  font-size: 36px;
  font-weight: 700;
  color: #d4af37;
}

.service-item h3 {
  font-size: 19px;
  font-weight: 600;
  margin-bottom: 6px;
  color: #8b4538;
}

.service-item p {
  font-size: 15px;
  color: #555;
}

/* Projects */
.projects {
  padding: 80px 0;
  background-color: #f5f1e9;
}

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

.project-item {
  height: 260px;
  background: #eee;
  border-radius: 4px;
  overflow: hidden;
}

.project-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-btn{
  font-size: 18px;
  font-weight: 600;
  margin-top: 50px;
  color: #8b4538;
  text-align: center;
}


/* CTA */
.cta {
  padding: 70px 0;
  color: #ffffff;
  background-color: #8b4513;
  text-align: center;
}

.cta h2 {
  font-size: 28px;
  font-weight: 600;
  margin-bottom: 12px;
}

.cta p {
  font-size: 16px;
  color: #ccc;
  margin-bottom: 24px;
}
.btn-primary{
    background-color: #d6aa77;
}

/* Contact Bottom (底部联系方式) */
.contact-bottom {
  padding: 60px 0;
  background-color: #333333;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.contact-item h4 {
  font-size: 16px;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 12px;
}

.contact-item p {
  font-size: 15px;
  color: #969696;
  line-height: 1.7;
  margin-bottom: 4px;
}

/* Footer */
.footer {
  padding: 40px 0;
  background-color: #111;
  color: white;
  text-align: center;
}

.footer-logo {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
}

.footer p {
  font-size: 14px;
  color: #888;
}

/* Responsive */
@media (max-width: 992px) {
  .diff-grid,
  .product-grid,
  .service-grid,
  .project-grid,
  .contact-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav {
    display: none;
  }
  .toggle {
    display: block;
    width: 26px;
  }
  .toggle span {
    display: block;
    height: 2px;
    color: #8b4538;
    margin: 4px 0;
  }
  .diff-grid,
  .product-grid,
  .service-grid,
  .project-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .hero h1 {
    font-size: 36px;
  }
}