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

body {
  font-family: 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  line-height: 1.6;
  color: #2c3e2f;
  background-color: #fdfbf7;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

/* 顶部导航 */
.navbar {
  background-color: #ffffff;
  box-shadow: 0 2px 15px rgba(0,0,0,0.05);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 1rem 0;
}
.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}
.logo-container {
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-container .logo {
  width: 2rem;
  flex-basis: 0 0 2rem;
  border-radius: 4px;
}

.logo-container .name {
  font-size: 1.8rem;
  font-weight: 700;
  color: #c97d30;
  letter-spacing: 1px;
}
.logo-container .name-desc {
  color: #4a6b3c;
  font-size: 1rem;
  font-weight: 400;
}
.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  text-decoration: none;
  color: #2c3e2f;
  font-weight: 500;
  transition: color 0.3s;
  font-size: 1.1rem;
}
.nav-links a:hover {
  color: #c97d30;
}
.menu-toggle {
  display: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: #4a6b3c;
}

/* 按钮样式 */
.btn {
  display: inline-block;
  background-color: #c97d30;
  color: white;
  padding: 12px 28px;
  border-radius: 40px;
  text-decoration: none;
  font-weight: 600;
  transition: background-color 0.3s;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}
.btn:hover {
  background-color: #b06c28;
}
.btn-outline {
  background-color: transparent;
  border: 2px solid #c97d30;
  color: #c97d30;
}
.btn-outline:hover {
  background-color: #c97d30;
  color: white;
}

/* hero 区域 */
.hero {
  background: linear-gradient(135deg, #f9f3e8 0%, #f0e2d0 100%);
  padding: 4rem 0;
  text-align: center;
}
.hero h1 {
  font-size: 2.8rem;
  color: #2c3e2f;
  margin-bottom: 1rem;
  line-height: 1.2;
}
.hero .highlight {
  color: #c97d30;
  position: relative;
}
.hero .highlight::after {
  content: "";
  position: absolute;
  width: 100%;
  height: 8px;
  background: rgba(201,125,48,0.2);
  bottom: 5px;
  left: 0;
  z-index: -1;
}
.hero p {
  font-size: 1.3rem;
  color: #4a6b3c;
  max-width: 700px;
  margin: 0 auto 2.5rem;
}

/* 通用板块 */
.section {
  padding: 5rem 0;
}
.section-title {
  text-align: center;
  font-size: 2.2rem;
  color: #2c3e2f;
  margin-bottom: 1rem;
}
.section-subtitle {
  text-align: center;
  font-size: 1.2rem;
  color: #6b8c5c;
  max-width: 700px;
  margin: 0 auto 4rem;
}

/* 品牌理念 */
.mission {
  background-color: #ffffff;
}
.mission-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.5rem;
}
.mission-card {
  text-align: center;
  padding: 2rem 1.5rem;
  border-radius: 20px;
  background: #fdfbf7;
  box-shadow: 0 10px 25px rgba(0,0,0,0.03);
  transition: transform 0.3s;
}
.mission-card:hover {
  transform: translateY(-5px);
}
.mission-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}
.mission-card h3 {
  font-size: 1.6rem;
  color: #c97d30;
  margin-bottom: 0.8rem;
}

/* 产地溯源 */
.trace {
  background-color: #f3f0ea;
}
.trace-content {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 3rem;
}
.trace-text {
  flex: 1;
  min-width: 280px;
}
.trace-text h3 {
  font-size: 2rem;
  color: #2c3e2f;
  margin-bottom: 1.5rem;
}
.trace-text p {
  font-size: 1.1rem;
  color: #3f4f3a;
  margin-bottom: 2rem;
}
.trace-image {
  border-radius: 30px;
  overflow: hidden;
  background: #d9c7b3;
  background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100" fill="%23b2947a"><rect width="100" height="100"/></svg>');
  background-size: cover;
  background-position: center;
}

.trace-image .img {
  display: block;
  width: 100%;
  max-width: 500px;
  height: auto;
}

/* 无硫加工 */
.nosulfur {
  background-color: #ffffff;
}
.nosulfur-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}
.sulfur-card {
  background: #f9f3e8;
  padding: 2rem 1.5rem;
  border-radius: 20px;
  border-left: 6px solid #c97d30;
  box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}
.sulfur-card h4 {
  font-size: 1.4rem;
  color: #2c3e2f;
  margin-bottom: 0.5rem;
}
.sulfur-card p {
  color: #4f5e4a;
}

/* 产品展示 */
.products {
  background-color: #f3f0ea;
}
.product-slider {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2rem;
}
.product-item {
  background: white;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 8px 20px rgba(0,0,0,0.05);
  text-align: left;
  transition: all 0.3s;
}
.product-item:hover {
  transform: scale(1.05);
}
.product-item .product-img {
  height: 180px;
  background-color: #e1d6cc;
  background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="80" height="80" viewBox="0 0 80 80" fill="%23b2947a"><circle cx="40" cy="40" r="30"/></svg>');
  background-size: cover;
  background-position: center;
}
.product-item .product-img .img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.product-item .product-content {
  padding: 1.5rem 1.2rem 1.8rem;
  text-align: left;
}
.product-item .product-name {
  font-size: 1.8rem;
  font-weight: 700;
  color: #2c3e2f;
  margin-bottom: 0.5rem;
  line-height: 1.2;
}
.product-item .core-effect {
  font-weight: 700;
  color: #c97d30;
  font-size: 1.1rem;
  margin-bottom: 1rem;
  border-left: 4px solid #c97d30;
  padding-left: 0.8rem;
}
.product-item .description p {
  margin-bottom: 0.6rem;
  font-size: 0.95rem;
  color: #3f4f3a;
  display: flex;
  gap: 0.5rem;
}
.product-item .description p::before {
  content: "•";
  color: #c97d30;
  font-weight: bold;
  display: inline-block;
  width: 1rem;
}

 /* 公司简介 */
 .about {
  background-color: #ffffff;
  border-top: 1px solid #f0e2d0;
  border-bottom: 1px solid #f0e2d0;
}
.about-content {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}
.about-content p {
  font-size: 1.2rem;
  color: #3f4f3a;
  margin-bottom: 1.5rem;
  line-height: 1.8;
}
.about-highlight {
  display: flex;
  justify-content: center;
  gap: 2.5rem;
  flex-wrap: wrap;
  margin-top: 2.5rem;
}
.about-highlight-item {
  text-align: center;
  min-width: 140px;
}
.about-highlight-item .number {
  font-size: 2.5rem;
  font-weight: 700;
  color: #c97d30;
  line-height: 1.2;
}
.about-highlight-item .label {
  font-size: 1rem;
  color: #4a6b3c;
  letter-spacing: 0.5px;
}

/* 行动号召 */
.cta {
  background: linear-gradient(145deg, #4a6b3c 0%, #2c3e2f 100%);
  color: white;
  text-align: center;
  padding: 4rem 0;
}
.cta h2 {
  font-size: 2.2rem;
  margin-bottom: 1rem;
}
.cta p {
  font-size: 1.2rem;
  margin-bottom: 2.5rem;
  opacity: 0.9;
}
.cta .scheme-btn {
  background-color: #c97d30;
  color: white;
  font-size: 1.2rem;
  padding: 15px 40px;
}
.cta .scheme-btn:hover {
  background-color: #b06c28;
}

/* 页脚 */
.footer {
  background-color: #1f2a1c;
  color: #e0d6cc;
  padding: 3rem 0;
  text-align: center;
}
.footer a {
  color: #c97d30;
  text-decoration: none;
}
.footer p {
  margin: 0.3rem 0;
}

/* 响应式 */
@media (max-width: 768px) {
  .navbar .container {
      flex-wrap: wrap;
  }
  .nav-links {
      display: none;
      width: 100%;
      flex-direction: column;
      align-items: center;
      gap: 1rem;
      padding: 1rem 0;
      background-color: #fff;
  }
  .nav-links.active {
      display: flex;
  }
  .menu-toggle {
      display: block;
  }
  .hero h1 {
      font-size: 2rem;
  }
  .section-title {
      font-size: 1.8rem;
  }
  .trace-content {
      flex-direction: column-reverse;
  }

  .trace-text {
    text-align: center;
  }
}

/* 占位图片说明 */
.placeholder-note {
  font-size: 0.9rem;
  color: #aaa;
  text-align: center;
  margin-top: 5px;
}

.qrcode-container {
  text-align: center;
  margin-top: 1rem;
}
.qrcode {
  width: 200px;
  height: 200px;
  margin: 0 auto 10px;
  border: 1px solid #eee;
  padding: 10px;
}
.tips {
  font-size: 0.9rem;
  line-height: 1.5;
}