/* ========================================
   义乌盈云科技有限公司 - 企业网站样式
   品牌：YUNSEAM盈云
   ======================================== */

/* CSS 变量 */
:root {
  --primary: #1a1a1a;
  --secondary: #0a0a0a;
  --accent: #e94560;
  --accent-hover: #c73e54;
  --gold: #d4a574;
  --gold-light: #e8c9a0;
  --text: #333333;
  --text-light: #666666;
  --text-white: #ffffff;
  --bg-white: #ffffff;
  --bg-light: #f8f9fa;
  --bg-dark: #000000;
  --border: #e0e0e0;
  --shadow: 0 4px 20px rgba(0,0,0,0.1);
  --shadow-hover: 0 8px 30px rgba(0,0,0,0.15);
  --transition: all 0.3s ease;
  --radius: 8px;
  --radius-lg: 16px;
  --max-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  color: var(--text);
  line-height: 1.6;
  background: var(--bg-white);
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

img {
  max-width: 100%;
  height: auto;
}

/* ========================================
   导航栏
   ======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  color: var(--primary);
  font-size: 14px;
}

.logo-text {
  color: var(--text-white);
}

.logo-text .brand-en {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--gold);
}

.logo-text .brand-cn {
  font-size: 12px;
  opacity: 0.8;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 40px;
}

.nav-menu a {
  color: var(--text-white);
  font-size: 15px;
  position: relative;
  padding: 5px 0;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gold);
  transition: var(--transition);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
  width: 100%;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--gold);
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.mobile-toggle span {
  width: 25px;
  height: 2px;
  background: var(--text-white);
  transition: var(--transition);
}

/* ========================================
   Hero 区域
   ======================================== */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, rgba(0,0,0,0.5) 0%, rgba(26,26,26,0.45) 50%, rgba(10,10,10,0.5) 100%), url('../images/hero-bg.png');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 100px 20px 60px;
  position: relative;
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  background: rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(10px);
  padding: 60px 40px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,0.15);
}

.hero-badge {
  display: inline-block;
  padding: 8px 20px;
  background: rgba(212, 165, 116, 0.15);
  border: 1px solid var(--gold);
  border-radius: 30px;
  color: var(--gold);
  font-size: 14px;
  margin-bottom: 30px;
  letter-spacing: 2px;
}

.hero h1 {
  font-size: 56px;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 20px;
  line-height: 1.2;
}

.hero h1 span {
  color: var(--gold);
}

.hero-subtitle {
  font-size: 20px;
  color: rgba(255,255,255,0.7);
  margin-bottom: 40px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 30px;
  font-size: 16px;
  font-weight: 500;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  color: var(--primary);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(212, 165, 116, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--text-white);
  border: 2px solid rgba(255,255,255,0.3);
}

.btn-outline:hover {
  border-color: var(--gold);
  color: var(--gold);
}

/* ========================================
   区块通用样式
   ======================================== */
.section {
  padding: 100px 20px;
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 60px;
}

.section-label {
  display: inline-block;
  color: var(--gold);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 15px;
}

.section-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 15px;
}

.section-desc {
  color: var(--text-light);
  font-size: 16px;
}

/* ========================================
   产品分类
   ======================================== */
.categories {
  background: var(--bg-light);
}

.categories-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.category-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  cursor: pointer;
}

.category-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  text-align: center;
}

.category-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.category-img {
  width: 100%;
  height: 120px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.category-img::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  border: 2px solid var(--gold);
  border-radius: 4px;
  background: transparent;
}

.category-card:hover .category-img::after {
  background: var(--gold);
  transition: var(--transition);
}

.category-info {
  padding: 24px;
}

.category-info h3 {
  font-size: 20px;
  margin-bottom: 8px;
  color: var(--primary);
}

.category-info p {
  color: var(--text-light);
  font-size: 14px;
}

/* ========================================
   特色优势
   ======================================== */
.features-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.feature-item {
  text-align: center;
  padding: 40px 24px;
  border-radius: var(--radius-lg);
  background: var(--bg-white);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.feature-item:hover {
  transform: translateY(-5px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: transparent;
  border: 1.5px solid var(--gold);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  position: relative;
  transition: var(--transition);
}

.feature-item:hover .feature-icon {
  background: var(--gold);
  border-color: var(--gold);
}

.feature-icon::after {
  content: '';
  width: 16px;
  height: 16px;
  border-top: 1.5px solid var(--gold);
  border-right: 1.5px solid var(--gold);
  transform: rotate(45deg) translate(-2px, 2px);
  transition: var(--transition);
}

.feature-item:hover .feature-icon::after {
  border-color: var(--primary);
}
  font-size: 28px;
}

.feature-item h3 {
  font-size: 20px;
  margin-bottom: 10px;
  color: var(--primary);
}

.feature-item p {
  color: var(--text-light);
  font-size: 15px;
}

/* ========================================
   页脚
   ======================================== */
.footer {
  background: var(--bg-dark);
  color: var(--text-white);
  padding: 60px 20px 30px;
}

.footer-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-brand .logo-text {
  margin-bottom: 20px;
}

.footer-brand p {
  color: rgba(255,255,255,0.6);
  font-size: 14px;
  line-height: 1.8;
}

.footer-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--gold);
}

.footer-links {
  list-style: none;
}

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

.footer-links a {
  color: rgba(255,255,255,0.6);
  font-size: 14px;
}

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

.footer-bottom {
  max-width: var(--max-width);
  margin: 40px auto 0;
  padding-top: 30px;
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
  color: rgba(255,255,255,0.4);
  font-size: 14px;
}

/* ========================================
   页面标题横幅
   ======================================== */
.page-banner {
  background: linear-gradient(135deg, var(--bg-dark) 0%, var(--primary) 100%);
  padding: 150px 20px 80px;
  text-align: center;
  color: var(--text-white);
}

.page-banner h1 {
  font-size: 42px;
  margin-bottom: 15px;
}

.page-banner p {
  color: rgba(255,255,255,0.7);
  font-size: 16px;
}

/* ========================================
   关于我们页面
   ======================================== */
.about-content {
  max-width: var(--max-width);
  margin: 0 auto;
}

.about-intro {
  display: grid;
  grid-template-columns: 1fr;
  gap: 60px;
  align-items: center;
  justify-items: center;
  margin-bottom: 80px;
}

.about-text {
  max-width: 800px;
  text-align: center;
  margin: 0 auto;
}

.about-img {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 80px;
}

.about-text h2 {
  font-size: 32px;
  margin-bottom: 20px;
  color: var(--primary);
}

.about-text p {
  color: var(--text-light);
  margin-bottom: 15px;
  line-height: 1.8;
  font-size: 16px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 40px;
}

.stat-item {
  text-align: center;
  padding: 30px;
  background: var(--bg-light);
  border-radius: var(--radius);
}

.stat-number {
  font-size: 36px;
  font-weight: 700;
  color: var(--gold);
}

.stat-label {
  color: var(--text-light);
  font-size: 14px;
  margin-top: 5px;
}

/* ========================================
   产品页面
   ======================================== */
.products-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 30px;
}

.product-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.product-card.banner-softskin {
  grid-column: 1 / -1 !important;
  background: linear-gradient(135deg, rgba(212,175,55,0.08), rgba(212,175,55,0.02));
  border: 1px solid var(--gold-light);
  display: flex !important;
  flex-wrap: wrap;
  align-items: stretch;
}

.product-card.banner-softskin .product-img {
  width: 360px;
  height: 420px;
  flex-shrink: 0;
  margin: 0 auto;
}

.product-card.banner-softskin .product-info {
  padding: 40px 36px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  flex: 1;
  min-width: 280px;
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.product-img {
  width: 100%;
  height: 250px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 60px;
}

.product-info {
  padding: 24px;
}

.product-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(212, 165, 116, 0.15);
  color: var(--gold);
  font-size: 12px;
  border-radius: 20px;
  margin-bottom: 10px;
}

.product-info h3 {
  font-size: 18px;
  margin-bottom: 8px;
  color: var(--primary);
}

.product-info p {
  color: var(--text-light);
  font-size: 14px;
}

/* ========================================
   联系页面
   ======================================== */
.contact-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 60px;
  justify-items: center;
}

.contact-info {
  text-align: center;
  max-width: 600px;
  width: 100%;
}

.contact-info .contact-item {
  justify-content: center;
  text-align: center;
}

.contact-info h2 {
  font-size: 28px;
  margin-bottom: 20px;
  color: var(--primary);
}

.contact-info > p {
  color: var(--text-light);
  margin-bottom: 30px;
}

.contact-item {
  display: flex;
  gap: 15px;
  margin-bottom: 25px;
  align-items: flex-start;
}

.contact-icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.contact-detail h4 {
  font-size: 18px;
  margin-bottom: 5px;
  color: var(--primary);
}

.contact-detail p {
  color: var(--text-light);
  font-size: 16px;
}

.contact-form {
  background: var(--bg-light);
  padding: 40px;
  border-radius: var(--radius-lg);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  color: var(--primary);
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 15px;
  transition: var(--transition);
  font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--gold);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* ========================================
   针织软皮肤 · 双横幅图网格
   ======================================== */
.knit-banners-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 0 auto 60px;
  max-width: 1000px;
}

.knit-banners-grid .knit-hero-banner {
  aspect-ratio: 4 / 5;
}

.knit-banners-grid .knit-hero-banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 992px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .about-intro,
  .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .about-img {
    height: 300px;
  }

  .knit-banners-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    max-width: 480px;
  }
}

@media (max-width: 768px) {
  .knit-banners-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    max-width: 480px;
  }

  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--bg-dark);
    flex-direction: column;
    padding: 20px;
    gap: 0;
    transform: translateY(-150%);
    transition: var(--transition);
  }
  
  .nav-menu.active {
    transform: translateY(0);
  }
  
  .nav-menu li {
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }
  
  .nav-menu a {
    display: block;
    padding: 15px 0;
  }
  
  .mobile-toggle {
    display: flex;
  }
  
  .hero h1 {
    font-size: 36px;
  }
  
  .hero-subtitle {
    font-size: 16px;
  }
  
  .section-title {
    font-size: 28px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .page-banner h1 {
    font-size: 32px;
  }
}

/* ========================================
   动画
   ======================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

/* 滚动显示 */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}