/* 风格B: 精致高端感 - 金色细节几何线条 */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@400;500;600;700&family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

:root {
  --primary: #1a1a1a;
  --primary-dark: #0a0a0a;
  --secondary: #fafafa;
  --gold: #c9a227;
  --gold-light: #e8c547;
  --gold-dark: #9a7b1a;
  --text: #1a1a1a;
  --text-light: #666666;
  --white: #ffffff;
  --cream: #f5f0e8;
  --border: #e0d8c8;
  --glow-gold: rgba(201, 162, 39, 0.4);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Noto Sans SC', sans-serif;
  background: var(--white);
  color: var(--text);
  line-height: 1.8;
  overflow-x: hidden;
}

/* 背景纹理 */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(45deg, rgba(201,162,39,0.02) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(201,162,39,0.02) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(201,162,39,0.02) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(201,162,39,0.02) 75%);
  background-size: 40px 40px;
  background-position: 0 0, 0 20px, 20px -20px, -20px 0px;
  pointer-events: none;
  z-index: -1;
}

/* 导航 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 25px 60px;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: all 0.4s;
}

.navbar.scrolled {
  padding: 15px 60px;
  box-shadow: 0 4px 30px rgba(0,0,0,0.08);
}

.navbar .container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: 'Cormorant Garamond', serif;
  font-size: 28px;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 3px;
  position: relative;
}

.logo-img {
  max-width: 180px;
  height: auto;
  display: block;
}

.logo::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gold);
}

.nav-links {
  display: flex;
  gap: 50px;
  list-style: none;
}

.nav-links a {
  color: var(--text);
  text-decoration: none;
  font-weight: 400;
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
  position: relative;
  padding: 5px 0;
  transition: all 0.3s;
}

.nav-links a::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 6px;
  height: 6px;
  background: var(--gold);
  border-radius: 50%;
  opacity: 0;
  transition: all 0.3s;
}

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

.nav-links a:hover::before {
  opacity: 1;
}

/* Banner */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 150px 20px 100px;
  background: linear-gradient(180deg, var(--white) 0%, var(--cream) 100%);
}

/* 装饰线条 */
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 200px;
  border: 1px solid var(--gold);
  opacity: 0.1;
  animation: borderRotate 30s linear infinite;
}

@keyframes borderRotate {
  from { transform: translateX(-50%) rotate(0deg); }
  to { transform: translateX(-50%) rotate(360deg); }
}

.hero-content {
  text-align: center;
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero h1 {
  font-family: 'Cormorant Garamond', serif;
  font-size: 80px;
  font-weight: 400;
  margin-bottom: 25px;
  color: var(--primary);
  letter-spacing: 8px;
  position: relative;
}

.hero h1::before,
.hero h1::after {
  content: '◆';
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 12px;
  color: var(--gold);
}

.hero h1::before {
  left: -40px;
}

.hero h1::after {
  right: -40px;
}

.hero p {
  font-size: 16px;
  color: var(--text-light);
  margin-bottom: 50px;
  letter-spacing: 6px;
  text-transform: uppercase;
}

.btn {
  display: inline-block;
  padding: 18px 55px;
  background: var(--primary);
  color: var(--white);
  text-decoration: none;
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 3px;
  text-transform: uppercase;
  position: relative;
  overflow: hidden;
  transition: all 0.4s;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gold);
  transform: translateY(100%);
  transition: transform 0.4s;
  z-index: -1;
}

.btn:hover {
  color: var(--primary);
}

.btn:hover::before {
  transform: translateY(0);
}

/* 区块 */
.section {
  padding: 120px 20px;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
}

.container-narrow {
  max-width: 900px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  font-family: 'Cormorant Garamond', serif;
  font-size: 48px;
  font-weight: 400;
  margin-bottom: 20px;
  color: var(--primary);
  letter-spacing: 4px;
}

.section-subtitle {
  text-align: center;
  font-size: 13px;
  color: var(--gold);
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: 60px;
  position: relative;
}

.section-subtitle::before,
.section-subtitle::after {
  content: '—';
  margin: 0 15px;
}

/* 产品分类 */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0;
}

.product-card {
  background: var(--white);
  border: 1px solid var(--border);
  padding: 45px 30px;
  text-align: center;
  position: relative;
  transition: all 0.4s;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gold);
  transform: scaleX(0);
  transition: transform 0.4s;
}

.product-card:hover {
  background: var(--cream);
}

.product-card:hover::before {
  transform: scaleX(1);
}

.product-card h3 {
  color: var(--primary);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 2px;
  position: relative;
  display: inline-block;
}

.product-card h3::before {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 30px;
  height: 1px;
  background: var(--gold);
}

/* 品牌 */
.brands-section {
  background: var(--cream);
}

.brands-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0;
}

.brand-item {
  width: 200px;
  height: 80px;
  background: var(--white);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Cormorant Garamond', serif;
  font-weight: 500;
  font-size: 14px;
  color: var(--text-light);
  letter-spacing: 2px;
  transition: all 0.3s;
  position: relative;
}

.brand-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 0;
  height: 2px;
  background: var(--gold);
  transition: width 0.3s;
}

.brand-item:hover {
  border-color: var(--gold);
}

.brand-item:hover::after {
  width: 100%;
}

/* 联系我们 */
.contact {
  background: var(--primary);
  color: var(--white);
}

.contact .section-title {
  color: var(--white);
}

.contact .section-subtitle {
  color: var(--gold);
}

.contact-info {
  display: flex;
  justify-content: center;
  gap: 100px;
  flex-wrap: wrap;
}

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

.contact-item h3 {
  color: var(--gold);
  font-family: 'Cormorant Garamond', serif;
  font-size: 16px;
  margin-bottom: 15px;
  letter-spacing: 3px;
}

.contact-item p {
  color: rgba(255,255,255,0.8);
  font-size: 15px;
}

/* 页脚 */
.footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.5);
  text-align: center;
  padding: 25px;
  font-size: 12px;
  letter-spacing: 2px;
}

.icp-number {
  margin-top: 8px;
  font-size: 11px;
}

.icp-number a {
  color: inherit;
  text-decoration: none;
  transition: opacity 0.3s;
}

.icp-number a:hover {
  opacity: 0.8;
}

/* 响应式 */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 36px;
    letter-spacing: 4px;
  }
  .hero h1::before,
  .hero h1::after {
    display: none;
  }
  .navbar {
    padding: 15px 20px;
  }
  .nav-links {
    display: none;
  }
  .section-title {
    font-size: 28px;
  }
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .product-card {
    padding: 30px 20px;
  }
  .contact-info {
    flex-direction: column;
    gap: 30px;
  }
  .brand-item {
    width: 140px;
    height: 60px;
    font-size: 11px;
  }
}