/* ==================== 字体引入 ==================== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ==================== 全局变量 - 高端配色 ==================== */
:root {
  /* 主色 - 深邃红 */
  --primary: #dc2626;
  --primary-dark: #b91c1c;
  --primary-light: #ef4444;
  --primary-glow: rgba(220,38,38,0.25);
  --primary-soft: rgba(220,38,38,0.08);
  /* 主色 - 深邃红 */
  --primary: #dc2626;
  --primary-dark: #b91c1c;
  --primary-light: #ef4444;
  --primary-glow: rgba(220,38,38,0.25);
  --primary-soft: rgba(220,38,38,0.08);

  /* 辅色 - 深海蓝 */
  --secondary: #0f172a;
  --secondary-light: #1e293b;
  --secondary-soft: #334155;
  --secondary-glow: rgba(15,23,42,0.2);

  /* 强调色 */
  --accent: #f59e0b;
  --accent2: #10b981;
  --gold: #fbbf24;
  --gold-dark: #f59e0b;

  /* 中性色 */
  --bg: #f8fafc;
  --bg2: #f1f5f9;
  --bg3: #e2e8f0;
  --white: #ffffff;
  --text: #0f172a;
  --text-light: #475569;
  --text-muted: #94a3b8;
  --border: #e2e8f0;
  --border-light: #f1f5f9;

  /* 玻璃效果 */
  --glass: rgba(255,255,255,0.72);
  --glass-border: rgba(255,255,255,0.4);

  /* 阴影系统 */
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.04), 0 8px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 16px rgba(0,0,0,0.06), 0 16px 48px rgba(0,0,0,0.12);
  --shadow-hover: 0 12px 24px rgba(220,38,38,0.18), 0 4px 8px rgba(0,0,0,0.08);
  --shadow-card: 0 0 0 1px rgba(0,0,0,0.04), 0 2px 8px rgba(0,0,0,0.04);

  /* 圆角 */
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* 过渡 */
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  --transition-fast: all 0.15s ease;
  --transition-slow: all 0.5s cubic-bezier(0.4,0,0.2,1);
}

/* ==================== 重置 ==================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Inter', -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
input, select, textarea, button { font-family: inherit; }

/* ==================== 工具类 ==================== */
.container { max-width: 1260px; margin: 0 auto; padding: 0 24px; }
.text-center { text-align: center; }
.text-red { color: var(--primary); }
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.gap-10 { gap: 10px; }
.gap-20 { gap: 20px; }
.mt-20 { margin-top: 20px; }
.mb-20 { margin-bottom: 20px; }
.w-100 { width: 100%; }

/* ==================== 顶部栏 - 更精致 ==================== */
.top-bar {
  background: linear-gradient(90deg, var(--secondary) 0%, var(--secondary-light) 50%, var(--secondary) 100%);
  color: rgba(255,255,255,0.75);
  font-size: 12px;
  padding: 7px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.top-bar .container { display: flex; justify-content: space-between; align-items: center; }
.top-bar-left { display: flex; align-items: center; gap: 8px; font-weight: 500; }
.top-bar-left i { color: var(--gold); font-size: 11px; }
.top-bar-right { display: flex; align-items: center; gap: 16px; }
.top-bar-right a { color: rgba(255,255,255,0.7); transition: var(--transition-fast); display: flex; align-items: center; gap: 5px; font-weight: 500; font-size: 12px; }
.top-bar-right a:hover { color: var(--gold); }
.lang-switch {
  font-weight: 600;
  border: 1px solid rgba(255,255,255,0.18);
  padding: 3px 11px;
  border-radius: 20px;
  background: rgba(255,255,255,0.05);
  transition: var(--transition-fast);
  font-size: 12px;
}
.lang-switch:hover { border-color: var(--gold); background: rgba(251,191,36,0.1); }
.mobile-lang-switch { display: none; }
.btn-join-top {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white !important;
  padding: 4px 13px;
  border-radius: 20px;
  font-weight: 700;
  font-size: 11.5px;
  letter-spacing: 0.02em;
  box-shadow: 0 2px 8px var(--primary-glow);
}

/* ==================== 主导航 - 玻璃拟态 ==================== */
.main-header {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(0,0,0,0.05), 0 4px 20px rgba(0,0,0,0.03);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 0;
  transition: var(--transition);
}
.main-header.scrolled {
  background: rgba(255,255,255,0.98);
  box-shadow: 0 2px 32px rgba(0,0,0,0.10);
}
.main-header .container {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 68px;
}
.logo a { display: flex; align-items: center; gap: 12px; }
.logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 20px;
  box-shadow: 0 4px 14px var(--primary-glow);
  flex-shrink: 0;
}
.logo-text { 
  display: flex; 
  flex-direction: column; 
  max-width: 200px;
}
.logo-main {
  font-size: 19px;
  font-weight: 800;
  color: var(--secondary);
  letter-spacing: -0.5px;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.logo-sub { 
  font-size: 10px; 
  color: var(--text-muted); 
  line-height: 1.2; 
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.main-nav { display: flex; align-items: center; gap: 2px; margin-left: auto; }
.main-nav a {
  padding: 8px 15px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-light);
  transition: var(--transition-fast);
  white-space: nowrap;
  position: relative;
  letter-spacing: 0.01em;
}
.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 18px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: transform 0.25s ease;
}
.main-nav a:hover { color: var(--primary); background: var(--primary-soft); }
.main-nav a:hover::after { transform: translateX(-50%) scaleX(1); }
.main-nav a.active { color: var(--primary); background: var(--primary-soft); font-weight: 600; }
.main-nav a.active::after { transform: translateX(-50%) scaleX(1); }
.header-right { display: flex; align-items: center; gap: 12px; }
.search-box { position: relative; }
.search-box input {
  border: 1.5px solid var(--border);
  border-radius: 24px;
  padding: 8px 40px 8px 18px;
  font-size: 13px;
  width: 200px;
  transition: var(--transition);
  background: var(--bg);
  color: var(--text);
  font-weight: 400;
}
.search-box input:focus { outline: none; border-color: var(--primary); background: white; width: 240px; box-shadow: 0 0 0 3px var(--primary-soft); }
.search-box button { position: absolute; right: 12px; top: 50%; transform: translateY(-50%); background: none; border: none; color: var(--text-muted); cursor: pointer; font-size: 13px; transition: color 0.2s; }
.search-box button:hover { color: var(--primary); }
.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  padding: 9px 22px;
  border-radius: 24px;
  font-weight: 700;
  font-size: 13px;
  transition: var(--transition);
  white-space: nowrap;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  letter-spacing: 0.02em;
  box-shadow: 0 4px 14px var(--primary-glow);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(220,38,38,0.40); color: white; }
.btn-primary:active { transform: translateY(0); }
.btn-secondary {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
  padding: 7px 22px;
  border-radius: 24px;
  font-weight: 700;
  font-size: 13px;
  transition: var(--transition);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  letter-spacing: 0.02em;
}
.btn-secondary:hover { background: var(--primary); color: white; box-shadow: 0 6px 20px var(--primary-glow); transform: translateY(-1px); }
.mobile-menu-btn { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.mobile-menu-btn span { display: block; width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: var(--transition); }

/* ==================== Hero Banner 轮播 - 升级 ==================== */
.hero-carousel {
  position: relative;
  overflow: hidden;
  background: var(--secondary);
}
.carousel-wrapper {
  position: relative;
  width: 100%;
  height: 600px;
}
.carousel-slides {
  position: relative;
  width: 100%;
  height: 600px;
}
.carousel-slide {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.carousel-slide.active { opacity: 1; z-index: 1; }
.carousel-media {
  position: absolute;
  top: 50%; left: 50%;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  transform: translate(-50%, -50%) scale(1.06);
  transition: transform 10s ease;
}
.carousel-slide.active .carousel-media { transform: translate(-50%, -50%) scale(1); }
.carousel-overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    105deg,
    rgba(15,23,42,0.88) 0%,
    rgba(15,23,42,0.70) 40%,
    rgba(15,23,42,0.35) 100%
  );
  z-index: 1;
}
.carousel-content {
  position: relative;
  z-index: 2;
  width: 100%;
  display: flex;
  align-items: center;
  height: 600px;
}
.carousel-content .hero-content { position: relative; z-index: 2; }

/* 轮播按钮 */
.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  background: rgba(255,255,255,0.10);
  color: white;
  border: 1px solid rgba(255,255,255,0.20);
  width: 52px;
  height: 52px;
  border-radius: 50%;
  font-size: 16px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(10px);
}
.carousel-btn:hover {
  background: rgba(255,255,255,0.22);
  border-color: rgba(255,255,255,0.45);
  transform: translateY(-50%) scale(1.08);
}
.carousel-prev { left: 28px; }
.carousel-next { right: 28px; }

/* 轮播指示器 - 胶囊样式 */
.carousel-dots {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  gap: 8px;
  align-items: center;
}
.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.35);
  cursor: pointer;
  transition: var(--transition);
  border: none;
}
.carousel-dot.active {
  background: var(--gold);
  width: 28px;
  border-radius: 4px;
  box-shadow: 0 0 12px rgba(251,191,36,0.5);
}
.carousel-dot:hover { background: rgba(255,255,255,0.6); }

/* ==================== Hero 默认/静态 ==================== */
.hero {
  background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-light) 40%, #1a2332 100%);
  color: white;
  padding: 110px 0 90px;
  position: relative;
  overflow: hidden;
  min-height: 620px;
  display: flex;
  align-items: center;
}
.hero::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -8%;
  width: 680px;
  height: 680px;
  background: radial-gradient(circle, rgba(220,38,38,0.15) 0%, transparent 65%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -25%;
  left: -3%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(30,41,59,0.3) 0%, transparent 65%);
  pointer-events: none;
}
.hero-content { position: relative; z-index: 2; max-width: 720px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.10);
  border: 1px solid rgba(255,255,255,0.25);
  color: #ffffff;
  padding: 7px 18px;
  border-radius: 24px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 22px;
  backdrop-filter: blur(8px);
  letter-spacing: 0.02em;
}
.hero h1,
.carousel-content h1 {
  font-family: 'Inter', 'PingFang SC', sans-serif;
  font-size: clamp(38px, 5vw, 66px);
  font-weight: 900;
  line-height: 1.08;
  margin-bottom: 18px;
  letter-spacing: -1.5px;
  color: #ffffff !important;
}
.hero h1 .highlight,
.carousel-content h1 .highlight {
  color: #ffffff !important;
  -webkit-text-fill-color: #ffffff !important;
  background: none !important;
}
.hero .hero-sub,
.carousel-content .hero-sub { font-size: clamp(15px, 2vw, 20px); color: rgba(255,255,255,0.92) !important; margin-bottom: 14px; font-weight: 400; line-height: 1.6; }
.hero .hero-slogan,
.carousel-content .hero-slogan { font-size: 14px; color: rgba(255,255,255,0.85) !important; font-weight: 600; margin-bottom: 36px; letter-spacing: 1px; }
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-btns .btn-primary { padding: 14px 34px; font-size: 15px; border-radius: 32px; }
.hero-btns .btn-outline {
  background: transparent;
  border: 2px solid rgba(255,255,255,0.30);
  color: white;
  padding: 12px 30px;
  border-radius: 32px;
  font-size: 15px;
  font-weight: 700;
  transition: var(--transition);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  backdrop-filter: blur(4px);
}
.hero-btns .btn-outline:hover { background: rgba(255,255,255,0.10); border-color: white; transform: translateY(-2px); }
.hero-stats { display: flex; gap: 44px; margin-top: 56px; flex-wrap: wrap; }
.hero-stat { text-align: center; }
.hero-stat .num { font-size: 38px; font-weight: 900; color: var(--gold); line-height: 1; font-family: 'Inter', sans-serif; letter-spacing: -1px; }
.hero-stat .label { font-size: 12px; color: rgba(255,255,255,0.50); margin-top: 5px; font-weight: 500; letter-spacing: 0.05em; text-transform: uppercase; }
.hero-visual { position: absolute; right: 5%; top: 50%; transform: translateY(-50%); width: 440px; z-index: 1; opacity: 0.06; font-size: 280px; display: flex; align-items: center; justify-content: center; }

/* ==================== 信任徽章栏 - 新增 ==================== */
.trust-bar {
  background: linear-gradient(90deg, var(--secondary) 0%, var(--secondary-light) 50%, var(--secondary) 100%);
  padding: 18px 0;
  overflow: hidden;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.trust-bar-inner {
  display: flex;
  align-items: center;
  gap: 40px;
  justify-content: center;
  flex-wrap: wrap;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255,255,255,0.70);
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
}
.trust-item i { color: var(--gold); font-size: 16px; }
.trust-divider { width: 1px; height: 20px; background: rgba(255,255,255,0.12); }

/* ==================== Section 通用 ==================== */
.section { padding: 88px 0; }
.section-alt { background: linear-gradient(180deg, var(--bg) 0%, var(--bg2) 100%); }
.section-header { text-align: center; margin-bottom: 60px; }
.section-header h2 {
  font-size: clamp(26px, 3vw, 40px);
  font-weight: 800;
  color: var(--secondary);
  margin-bottom: 14px;
  letter-spacing: -0.5px;
  line-height: 1.2;
}
.section-header p { font-size: 15.5px; color: var(--text-light); max-width: 560px; margin: 0 auto; line-height: 1.7; }
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 11.5px;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 20px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 12px;
  border: 1px solid rgba(220,38,38,0.12);
}

/* ==================== 新闻动态 ==================== */
.news-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; }
.news-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.news-card-img {
  position: relative;
  height: 180px;
  overflow: hidden;
}
.news-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.news-card:hover .news-card-img img {
  transform: scale(1.05);
}
.news-card-img-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--secondary-light), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 48px;
}
.news-card-body {
  padding: 20px;
}
.news-card-date {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 4px;
}
.news-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 10px;
  line-height: 1.4;
}
.news-card h3 a {
  color: inherit;
  text-decoration: none;
}
.news-card h3 a:hover {
  color: var(--primary);
}
.news-card-excerpt {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.news-card-link:hover {
  gap: 10px;
}

/* ==================== 产品卡片 - 升级 ==================== */
.products-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(275px, 1fr)); gap: 24px; }
.product-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  border: 1px solid var(--border-light);
  position: relative;
}
.product-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  border: 2px solid transparent;
  background: linear-gradient(white, white) padding-box,
              linear-gradient(135deg, var(--primary-light), var(--primary-dark)) border-box;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  z-index: -1;
}
.product-card:hover { transform: translateY(-7px); box-shadow: var(--shadow-hover); }
.product-card:hover::before { opacity: 1; }
.product-card-img {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  background: linear-gradient(135deg, #f0f4ff, #e8edf7);
}
.product-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.product-card:hover .product-card-img img { transform: scale(1.07); }
.product-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  font-size: 10.5px;
  font-weight: 700;
  padding: 4px 11px;
  border-radius: 20px;
  letter-spacing: 0.5px;
  box-shadow: 0 2px 8px var(--primary-glow);
  z-index: 2;
}
.product-card-body { padding: 18px 20px 20px; }
.product-card-factory { font-size: 11.5px; color: var(--text-muted); margin-bottom: 7px; display: flex; align-items: center; gap: 5px; font-weight: 500; }
.product-card-factory i { color: var(--secondary-soft); font-size: 10px; }
.product-card h3 { font-size: 15.5px; font-weight: 700; color: var(--secondary); margin-bottom: 8px; line-height: 1.35; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.product-card-desc { font-size: 13px; color: var(--text-light); margin-bottom: 14px; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; line-height: 1.55; }
.product-card-price { display: flex; align-items: baseline; gap: 5px; margin-bottom: 14px; padding: 10px 14px; background: linear-gradient(135deg, rgba(220,38,38,0.04), rgba(220,38,38,0.06)); border-radius: 10px; border: 1px solid rgba(220,38,38,0.06); }
.price-label { font-size: 11px; color: var(--text-muted); font-weight: 500; }
.price-value { font-size: 24px; font-weight: 900; color: var(--primary); font-family: 'Inter', sans-serif; letter-spacing: -0.5px; }
.price-unit { font-size: 12px; color: var(--text-light); font-weight: 500; }
.product-card-footer { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.product-meta { font-size: 11.5px; color: var(--text-muted); display: flex; align-items: center; gap: 4px; }
.btn-inquiry {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  border: none;
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 12.5px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  letter-spacing: 0.02em;
  box-shadow: 0 3px 10px var(--primary-glow);
}
.btn-inquiry:hover { transform: translateY(-1px); box-shadow: 0 6px 16px var(--primary-glow); }
.product-placeholder { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; font-size: 80px; color: rgba(30,41,59,0.15); }

/* ==================== 厂家卡片 - 升级 ==================== */
.factories-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); gap: 24px; }
.factory-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  border: 1px solid var(--border-light);
  display: flex;
  gap: 16px;
  position: relative;
  overflow: hidden;
}
.factory-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg, var(--primary), var(--primary-dark));
  transform: scaleY(0);
  transition: transform 0.3s ease;
  transform-origin: top;
}
.factory-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }
.factory-card:hover::after { transform: scaleY(1); }
.factory-logo {
  width: 66px;
  height: 66px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--secondary-soft), var(--secondary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 28px;
  flex-shrink: 0;
  box-shadow: 0 4px 14px var(--secondary-glow);
  overflow: hidden;
}
.factory-info { flex: 1; min-width: 0; }
.factory-info h3 { font-size: 15.5px; font-weight: 700; color: var(--secondary); margin-bottom: 6px; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.factory-info p { font-size: 13px; color: var(--text-light); margin-bottom: 12px; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; line-height: 1.55; }
.factory-tags { display: flex; flex-wrap: wrap; gap: 7px; }
.factory-tag {
  background: var(--bg2);
  color: var(--secondary-soft);
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 20px;
  font-weight: 600;
  border: 1px solid rgba(51,65,85,0.08);
}
.factory-verified {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--accent2);
  font-size: 11.5px;
  font-weight: 700;
  background: rgba(16,185,129,0.08);
  padding: 4px 10px;
  border-radius: 20px;
  border: 1px solid rgba(16,185,129,0.15);
}

/* ==================== 入驻区域 - 升级 ==================== */
.join-section {
  background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-light) 50%, #0a1628 100%);
  color: white;
  padding: 96px 0;
  position: relative;
  overflow: hidden;
}
.join-section::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='80' height='80' viewBox='0 0 80 80' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none'%3E%3Cg fill='%23ffffff' fill-opacity='0.02'%3E%3Cpath d='M40 0L80 80H0L40 0z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.join-section::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -15%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(220,38,38,0.10) 0%, transparent 60%);
  pointer-events: none;
}
.join-content { position: relative; z-index: 1; text-align: center; }
.join-content h2 { font-size: clamp(28px, 3.5vw, 46px); font-weight: 900; margin-bottom: 12px; letter-spacing: -0.5px; }
.join-content .subtitle { font-size: 18px; color: var(--gold); font-weight: 600; margin-bottom: 48px; }
.join-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; margin-bottom: 44px; }
.join-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  text-align: center;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.join-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--gold));
  opacity: 0;
  transition: opacity 0.3s;
}
.join-card:hover { background: rgba(255,255,255,0.08); transform: translateY(-5px); }
.join-card:hover::before { opacity: 1; }
.join-card-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 18px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  color: white;
  box-shadow: 0 6px 20px var(--primary-glow);
}
.join-card h3 { font-size: 18px; font-weight: 800; margin-bottom: 10px; color: var(--gold); }
.join-card p { font-size: 14px; color: rgba(255,255,255,0.68); line-height: 1.65; }
.join-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn-white {
  background: white;
  color: var(--primary);
  padding: 14px 36px;
  border-radius: 32px;
  font-size: 15.5px;
  font-weight: 800;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 6px 24px rgba(0,0,0,0.15);
}
.btn-white:hover { transform: translateY(-3px); box-shadow: 0 12px 32px rgba(0,0,0,0.22); }
.btn-outline-white {
  background: transparent;
  border: 2px solid rgba(255,255,255,0.40);
  color: white;
  padding: 12px 32px;
  border-radius: 32px;
  font-size: 15.5px;
  font-weight: 700;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-outline-white:hover { background: rgba(255,255,255,0.08); border-color: white; transform: translateY(-2px); }

/* ==================== 流程步骤 - 新增 ==================== */
.steps-section { padding: 80px 0; background: linear-gradient(180deg, var(--bg) 0%, white 100%); }
.steps-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 0; position: relative; }
.steps-grid::before {
  content: '';
  position: absolute;
  top: 44px;
  left: 12.5%;
  right: 12.5%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent2));
  z-index: 0;
  opacity: 0.3;
}
.step-item { text-align: center; padding: 0 20px; position: relative; z-index: 1; }
.step-num {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 20px;
  font-weight: 900;
  margin: 0 auto 20px;
  box-shadow: 0 6px 20px var(--primary-glow);
  border: 4px solid white;
}
.step-item h4 { font-size: 16px; font-weight: 700; color: var(--secondary); margin-bottom: 8px; }
.step-item p { font-size: 13.5px; color: var(--text-light); line-height: 1.6; }

/* ==================== 收费模式 ==================== */
.model-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; max-width: 840px; margin: 0 auto; }
.model-card { border-radius: var(--radius-xl); padding: 40px 36px; text-align: center; position: relative; overflow: hidden; }
.model-card.initial {
  background: linear-gradient(135deg, #ecfdf5, #f0fdf4);
  border: 2px solid rgba(16,185,129,0.20);
  box-shadow: 0 8px 32px rgba(16,185,129,0.08);
}
.model-card.later {
  background: linear-gradient(135deg, #fffbeb, #fef3c7);
  border: 2px solid rgba(245,158,11,0.20);
  box-shadow: 0 8px 32px rgba(245,158,11,0.08);
}
.model-card h3 { font-size: 23px; font-weight: 800; margin-bottom: 8px; color: var(--secondary); }
.model-tag { display: inline-block; padding: 5px 16px; border-radius: 20px; font-size: 12px; font-weight: 700; margin-bottom: 24px; letter-spacing: 0.5px; }
.initial .model-tag { background: #10b981; color: white; }
.later .model-tag { background: var(--accent); color: white; }
.model-items { list-style: none; text-align: left; }
.model-items li { display: flex; align-items: center; gap: 12px; padding: 10px 0; font-size: 15px; color: var(--text); border-bottom: 1px solid rgba(0,0,0,0.03); }
.model-items li:last-child { border-bottom: none; }
.model-items li i { color: var(--primary); width: 20px; flex-shrink: 0; }
.initial .model-items li i { color: #10b981; }
.later .model-items li i { color: var(--accent); }

/* ==================== 关于我们 ==================== */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; }
.about-text h2 { font-size: clamp(26px, 3vw, 38px); font-weight: 800; color: var(--secondary); margin-bottom: 20px; letter-spacing: -0.5px; }
.about-text p { font-size: 15px; color: var(--text-light); line-height: 1.85; margin-bottom: 16px; }
.about-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 36px; }
.about-stat {
  background: white;
  border-radius: var(--radius);
  padding: 22px 20px;
  text-align: center;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.about-stat:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.about-stat .num { font-size: 32px; font-weight: 900; color: var(--primary); font-family: 'Inter', sans-serif; letter-spacing: -1px; }
.about-stat .label { font-size: 12.5px; color: var(--text-light); margin-top: 4px; font-weight: 500; }
.about-visual {
  background: linear-gradient(135deg, var(--secondary-light), var(--secondary));
  border-radius: var(--radius-xl);
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.12);
  font-size: 120px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(15,23,42,0.25);
}
.about-visual::before {
  content: '';
  position: absolute;
  top: -25%;
  right: -20%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(220,38,38,0.12) 0%, transparent 65%);
}
.about-visual::after {
  content: '';
  position: absolute;
  bottom: -20%;
  left: -15%;
  width: 250px;
  height: 250px;
  background: radial-gradient(circle, rgba(30,41,59,0.3) 0%, transparent 65%);
}
.about-visual-inner { position: relative; z-index: 2; }

/* ==================== 关于我们 - 新版样式 ==================== */
.about-intro {
  text-align: center;
  padding: 20px 0 60px;
}
.about-intro-content {
  max-width: 800px;
  margin: 0 auto;
}
.about-intro-text {
  font-size: 16px;
  line-height: 1.9;
  color: var(--text-light);
  margin-top: 16px;
}

/* 创始人寄语 */
.founder-quote {
  margin-top: 30px;
  padding-top: 24px;
  border-top: 2px solid var(--border-light);
}
.quote-text {
  font-size: 15px;
  color: var(--primary);
  font-style: italic;
  font-weight: 600;
}

/* C端服务 */
.c-service {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.c-service-content h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--secondary);
  margin: 12px 0 16px;
}
.c-service-desc {
  font-size: 16px;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 24px;
}
.c-service-features {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.c-service-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}
.c-service-item i {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 16px;
  flex-shrink: 0;
}
.c-service-item span {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
}
.c-service-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}
.c-service-icon {
  width: 200px;
  height: 200px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 64px;
  box-shadow: 0 20px 60px rgba(239,68,68,0.35);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

/* 使命与愿景 */
.mission-vision {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.mission-card, .vision-card {
  background: white;
  border-radius: var(--radius-xl);
  padding: 40px;
  text-align: center;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}
.mission-card:hover, .vision-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.mission-icon, .vision-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
}
.mission-icon {
  background: linear-gradient(135deg, #10b981, #059669);
  color: white;
}
.vision-icon {
  background: linear-gradient(135deg, #6366f1, #4f46e5);
  color: white;
}
.mission-card h3, .vision-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 12px;
}
.mission-card p, .vision-card p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-light);
}

/* 平台特色 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}
.feature-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}
.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 24px;
}
.feature-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-light);
}

/* 发展历程 */
.section-dark {
  background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-light) 100%);
  color: white;
}
.section-dark .section-header h2,
.section-dark .section-tag {
  color: white;
}
.section-dark .section-tag {
  background: rgba(255,255,255,0.15);
}
.timeline {
  position: relative;
  padding: 20px 0;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: rgba(255,255,255,0.2);
  transform: translateX(-50%);
}
.timeline-item {
  position: relative;
  margin-bottom: 48px;
}
.timeline-item:last-child {
  margin-bottom: 0;
}
.timeline-item:nth-child(odd) .timeline-content {
  text-align: right;
  margin-left: calc(50% + 40px);
}
.timeline-item:nth-child(even) .timeline-content {
  text-align: left;
  margin-right: calc(50% + 40px);
}
.timeline-year {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 80px;
  background: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: white;
  box-shadow: 0 8px 24px rgba(239,68,68,0.4);
  z-index: 1;
}
.timeline-content {
  padding: 24px;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
}
.timeline-content h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}
.timeline-content p {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255,255,255,0.8);
}

/* 团队介绍 */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}
.team-card {
  background: white;
  border-radius: var(--radius-xl);
  padding: 32px;
  text-align: center;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.team-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.team-avatar {
  width: 90px;
  height: 90px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 36px;
  box-shadow: 0 8px 24px rgba(239,68,68,0.3);
}
.team-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 6px;
}
.team-title {
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 12px;
}
.team-desc {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-light);
}

/* 数据统计 */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 24px;
}
.stat-card {
  text-align: center;
  padding: 32px 20px;
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.stat-num {
  font-size: 42px;
  font-weight: 900;
  color: var(--primary);
  font-family: 'Inter', sans-serif;
  line-height: 1.2;
}
.stat-label {
  font-size: 13px;
  color: var(--text-light);
  margin-top: 8px;
  font-weight: 500;
}

/* ==================== 询盘弹窗 - 升级 ==================== */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(15,23,42,0.55);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 20px;
  backdrop-filter: blur(6px);
}
.modal-overlay.active { display: flex; animation: fadeIn 0.2s ease; }
.modal {
  background: white;
  border-radius: var(--radius-xl);
  padding: 36px;
  max-width: 580px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  box-shadow: 0 32px 80px rgba(0,0,0,0.20);
  animation: slideUp 0.3s ease;
}
.modal h2 { font-size: 22px; font-weight: 800; color: var(--secondary); margin-bottom: 8px; }
.modal .modal-product { font-size: 14px; color: var(--text-light); margin-bottom: 24px; padding-bottom: 18px; border-bottom: 1px solid var(--border-light); }
.modal-close {
  position: absolute;
  top: 18px;
  right: 18px;
  background: var(--bg);
  border: none;
  font-size: 20px;
  color: var(--text-muted);
  cursor: pointer;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}
.modal-close:hover { background: var(--primary); color: white; }

/* 微信二维码区域 */
.wechat-qr-section {
  text-align: center;
  padding: 20px;
  background: linear-gradient(135deg, #f0fdf4, #dcfce7);
  border-radius: var(--radius-lg);
  margin-bottom: 24px;
  border: 1px solid #bbf7d0;
  flex-shrink: 0;
}
.wechat-qr-title {
  font-size: 14px;
  font-weight: 600;
  color: #059669;
  margin-bottom: 12px;
}
.wechat-qr-code {
  width: 140px;
  height: 140px;
  object-fit: cover;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  display: block;
  margin: 0 auto;
}
.wechat-qr-label {
  font-size: 13px;
  color: var(--text-light);
  margin-top: 10px;
}

/* ==================== 表单 ==================== */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 7px; }
.form-group.full { grid-column: 1/-1; }
.form-group label { font-size: 13px; font-weight: 600; color: var(--text); }
.form-group label .req { color: var(--primary); }
.form-group input, .form-group select, .form-group textarea {
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 11px 15px;
  font-size: 14px;
  transition: var(--transition-fast);
  background: var(--bg);
  color: var(--text);
  font-weight: 400;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  background: white;
  box-shadow: 0 0 0 3px var(--primary-soft);
}
.form-group textarea { resize: vertical; min-height: 96px; }
.form-submit { grid-column: 1/-1; }
.alert { padding: 13px 18px; border-radius: 10px; margin-bottom: 16px; font-size: 14px; font-weight: 500; }
.alert-success { background: #ecfdf5; color: #047857; border: 1px solid #a7f3d0; }
.alert-error { background: #fef2f2; color: #b91c1c; border: 1px solid #fecaca; }

/* ==================== 产品详情 ==================== */
.product-detail { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.product-gallery { position: sticky; top: 80px; }
.product-main-img { border-radius: var(--radius-lg); overflow: hidden; aspect-ratio: 4/3; background: var(--bg); margin-bottom: 12px; box-shadow: var(--shadow-md); }
.product-main-img img { width: 100%; height: 100%; object-fit: cover; }
.product-thumbs { display: flex; gap: 8px; flex-wrap: wrap; }
.product-thumb { width: 76px; height: 57px; border-radius: 10px; overflow: hidden; cursor: pointer; border: 2px solid transparent; transition: var(--transition-fast); }
.product-thumb.active, .product-thumb:hover { border-color: var(--primary); box-shadow: 0 0 0 2px var(--primary-soft); }
.product-thumb img { width: 100%; height: 100%; object-fit: cover; }
.product-info h1 { font-size: clamp(22px, 2.5vw, 30px); font-weight: 800; color: var(--secondary); margin-bottom: 14px; letter-spacing: -0.5px; }
.product-price-box {
  background: linear-gradient(135deg, rgba(220,38,38,0.04), rgba(220,38,38,0.06));
  border-radius: var(--radius);
  padding: 18px 22px;
  margin-bottom: 22px;
  border: 1px solid rgba(220,38,38,0.08);
}
.product-price-box .price-big { font-size: 34px; font-weight: 900; color: var(--primary); font-family: 'Inter', sans-serif; letter-spacing: -1px; }
.product-price-box .price-range { font-size: 15px; color: var(--text-light); }
.product-specs { margin: 22px 0; }
.spec-table { width: 100%; border-collapse: collapse; border-radius: var(--radius); overflow: hidden; }
.spec-table tr { border-bottom: 1px solid var(--border-light); }
.spec-table td { padding: 11px 14px; font-size: 14px; }
.spec-table td:first-child { color: var(--text-light); width: 135px; font-weight: 600; background: var(--bg); }
.product-desc { font-size: 15px; color: var(--text); line-height: 1.85; margin-bottom: 26px; }
.product-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.product-actions .btn-primary { flex: 1; text-align: center; padding: 14px; font-size: 15px; justify-content: center; }
.product-actions .btn-secondary { flex: 1; text-align: center; padding: 12px; font-size: 15px; justify-content: center; }

/* ==================== 面包屑 ==================== */
.breadcrumb { padding: 14px 0; font-size: 13px; color: var(--text-muted); border-bottom: 1px solid var(--border-light); margin-bottom: 0; }
.breadcrumb a { color: var(--text-muted); transition: color 0.2s; }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb span { color: var(--text); font-weight: 500; }
.breadcrumb-sep { margin: 0 8px; color: var(--border); }

/* ==================== 分页 ==================== */
.pagination { display: flex; justify-content: center; gap: 6px; margin-top: 44px; flex-wrap: wrap; }
.pagination a, .pagination span { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 10px; font-size: 14px; font-weight: 600; transition: var(--transition-fast); border: 1.5px solid var(--border); color: var(--text); }
.pagination a:hover { background: var(--primary); color: white; border-color: var(--primary); transform: translateY(-2px); box-shadow: 0 4px 12px var(--primary-glow); }
.pagination .current { background: var(--primary); color: white; border-color: var(--primary); box-shadow: 0 4px 12px var(--primary-glow); }
.pagination .disabled { opacity: 0.35; cursor: not-allowed; }

/* ==================== 后台通用 ==================== */
.admin-layout { display: flex; min-height: 100vh; }
.admin-sidebar {
  width: 248px;
  background: linear-gradient(180deg, var(--secondary) 0%, var(--secondary-light) 100%);
  color: white;
  flex-shrink: 0;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.admin-sidebar-logo {
  padding: 26px 22px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  background: rgba(0,0,0,0.12);
}
.admin-sidebar-logo h2 { font-size: 16px; font-weight: 800; letter-spacing: -0.3px; }
.admin-sidebar-logo p { font-size: 11.5px; color: rgba(255,255,255,0.4); margin-top: 3px; }
.admin-nav { padding: 16px 0; }
.admin-nav a {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 12px 22px;
  color: rgba(255,255,255,0.60);
  font-size: 13.5px;
  transition: var(--transition-fast);
  font-weight: 500;
  letter-spacing: 0.01em;
  border-left: 3px solid transparent;
  margin: 1px 0;
}
.admin-nav a:hover, .admin-nav a.active {
  background: rgba(255,255,255,0.06);
  color: white;
  border-left-color: var(--primary);
}
.admin-nav a i { width: 18px; opacity: 0.7; }
.admin-nav .nav-section {
  padding: 12px 22px 5px;
  font-size: 10.5px;
  color: rgba(255,255,255,0.25);
  text-transform: uppercase;
  letter-spacing: 1.2px;
  font-weight: 700;
}
.admin-main { flex: 1; background: var(--bg); overflow-y: auto; }
.admin-topbar {
  background: white;
  border-bottom: 1px solid var(--border-light);
  padding: 18px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 8px rgba(0,0,0,0.03);
}
.admin-topbar h1 { font-size: 20px; font-weight: 800; color: var(--secondary); letter-spacing: -0.5px; }
.admin-content { padding: 30px; }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(185px, 1fr)); gap: 18px; margin-bottom: 30px; }
.stat-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 22px 26px;
  display: flex;
  gap: 16px;
  align-items: center;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.stat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.stat-card-icon {
  width: 54px;
  height: 54px;
  border-radius: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: white;
  flex-shrink: 0;
}
.stat-card-icon.red { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); }
.stat-card-icon.blue { background: linear-gradient(135deg, var(--secondary-soft), var(--secondary-light)); }
.stat-card-icon.green { background: linear-gradient(135deg, #10b981, #047857); }
.stat-card-icon.orange { background: linear-gradient(135deg, var(--accent), #d97706); }
.stat-card-info .num { font-size: 30px; font-weight: 900; color: var(--secondary); font-family: 'Inter', sans-serif; letter-spacing: -1px; }
.stat-card-info .label { font-size: 12.5px; color: var(--text-light); font-weight: 500; }
.admin-table-wrap { background: white; border-radius: var(--radius-lg); box-shadow: var(--shadow-card); overflow: hidden; border: 1px solid var(--border-light); }
.admin-table-header { padding: 18px 22px; border-bottom: 1px solid var(--border-light); display: flex; justify-content: space-between; align-items: center; }
.admin-table-header h3 { font-size: 16px; font-weight: 700; color: var(--secondary); }
.data-table { width: 100%; border-collapse: collapse; }
.data-table th { background: var(--bg); padding: 12px 18px; text-align: left; font-size: 11.5px; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.8px; border-bottom: 1px solid var(--border-light); }
.data-table td { padding: 14px 18px; font-size: 14px; border-bottom: 1px solid var(--border-light); vertical-align: middle; }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: #f8fafc; }
.badge { display: inline-flex; align-items: center; padding: 4px 11px; border-radius: 20px; font-size: 11px; font-weight: 700; letter-spacing: 0.3px; }
.badge-pending { background: #fffbeb; color: #b45309; }
.badge-active { background: #ecfdf5; color: #047857; }
.badge-rejected { background: #fef2f2; color: #b91c1c; }
.action-btns { display: flex; gap: 7px; flex-wrap: wrap; }
.btn-sm {
  padding: 6px 13px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  letter-spacing: 0.01em;
}
.btn-sm-green { background: #ecfdf5; color: #047857; }
.btn-sm-green:hover { background: #10b981; color: white; }
.btn-sm-red { background: #fef2f2; color: #b91c1c; }
.btn-sm-red:hover { background: var(--primary); color: white; }
.btn-sm-blue { background: #eff6ff; color: #2563eb; }
.btn-sm-blue:hover { background: #2563eb; color: white; }
.btn-sm-orange { background: #fffbeb; color: #b45309; }
.btn-sm-orange:hover { background: #d97706; color: white; }
.btn-sm-gray { background: var(--bg2); color: var(--text-light); }
.btn-sm-gray:hover { background: var(--text-light); color: white; }

/* ==================== 登录/注册 ==================== */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-light) 50%, var(--secondary) 100%);
  padding: 20px;
  position: relative;
  overflow: hidden;
}
.auth-page::before {
  content: '';
  position: absolute;
  top: -30%;
  left: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(220,38,38,0.10) 0%, transparent 65%);
}
.auth-card {
  background: white;
  border-radius: var(--radius-xl);
  padding: 44px;
  max-width: 480px;
  width: 100%;
  box-shadow: 0 32px 80px rgba(0,0,0,0.20);
  position: relative;
  z-index: 1;
}
.auth-card .auth-logo { text-align: center; margin-bottom: 30px; }
.auth-card .auth-logo .logo-icon {
  width: 60px;
  height: 60px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 28px;
  margin: 0 auto 14px;
  box-shadow: 0 8px 24px var(--primary-glow);
}
.auth-card h2 { font-size: 26px; font-weight: 800; color: var(--secondary); text-align: center; margin-bottom: 6px; letter-spacing: -0.5px; }
.auth-card .auth-sub { text-align: center; color: var(--text-light); font-size: 14px; margin-bottom: 30px; }
.auth-card .form-group { margin-bottom: 15px; display: flex; flex-direction: column; gap: 7px; }
.auth-footer-text { text-align: center; font-size: 14px; color: var(--text-light); margin-top: 22px; }
.auth-footer-text a { color: var(--primary); font-weight: 600; }

/* ==================== 页面Banner ==================== */
.page-hero {
  background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-light) 60%, #1a2332 100%);
  color: white;
  padding: 56px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(220,38,38,0.08) 0%, transparent 60%);
}
.page-hero h1 { font-size: clamp(26px, 3vw, 40px); font-weight: 800; margin-bottom: 10px; letter-spacing: -0.5px; }
.page-hero p { font-size: 15px; color: rgba(255,255,255,0.60); }

/* ==================== 过滤器 ==================== */
.filter-bar { background: white; border-radius: var(--radius); padding: 18px 22px; box-shadow: var(--shadow-card); margin-bottom: 28px; display: flex; gap: 14px; align-items: center; flex-wrap: wrap; border: 1px solid var(--border-light); }
.filter-bar label { font-size: 13px; font-weight: 600; color: var(--text-light); }
.filter-bar select { border: 1.5px solid var(--border); border-radius: 9px; padding: 8px 13px; font-size: 13.5px; cursor: pointer; background: var(--bg); transition: var(--transition-fast); }
.filter-bar select:focus { outline: none; border-color: var(--primary); }

/* ==================== 空状态 ==================== */
.empty-state { text-align: center; padding: 70px 20px; }
.empty-state i { font-size: 60px; color: var(--border); margin-bottom: 18px; }
.empty-state h3 { font-size: 20px; font-weight: 700; color: var(--text-light); margin-bottom: 10px; }
.empty-state p { font-size: 14px; color: var(--text-muted); }

/* ==================== 图片上传 ==================== */
.upload-area { border: 2px dashed var(--border); border-radius: var(--radius); padding: 28px; text-align: center; cursor: pointer; transition: var(--transition); background: var(--bg); }
.upload-area:hover { border-color: var(--primary); background: rgba(220,38,38,0.02); }
.upload-area i { font-size: 36px; color: var(--text-muted); margin-bottom: 10px; }
.upload-area p { font-size: 14px; color: var(--text-light); }
.upload-preview { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.upload-preview-item { width: 84px; height: 64px; border-radius: 8px; overflow: hidden; position: relative; }
.upload-preview-item img { width: 100%; height: 100%; object-fit: cover; }
.upload-preview-item .remove { position: absolute; top: 3px; right: 3px; background: rgba(0,0,0,0.65); color: white; border: none; border-radius: 50%; width: 20px; height: 20px; font-size: 11px; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: background 0.2s; }
.upload-preview-item .remove:hover { background: var(--primary); }

/* ==================== 页脚 - 升级 ==================== */
.main-footer { background: #0b1221; color: rgba(255,255,255,0.60); }
.footer-top { padding: 64px 0 48px; }
.footer-grid { display: grid; grid-template-columns: 2.2fr 1fr 1fr 1.6fr; gap: 48px; }
.footer-brand .footer-logo { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.footer-brand .footer-logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 20px;
  flex-shrink: 0;
  box-shadow: 0 4px 14px var(--primary-glow);
}
.footer-brand .footer-logo span { font-size: 20px; font-weight: 800; color: white; letter-spacing: -0.5px; }
.footer-brand p { font-size: 13px; line-height: 1.75; margin-bottom: 6px; }
.footer-slogan { color: var(--gold) !important; font-size: 12px !important; font-weight: 600; letter-spacing: 0.5px; }
.footer-social { display: flex; gap: 10px; margin-top: 18px; }
.footer-social a {
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: rgba(255,255,255,0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.50);
  font-size: 15px;
  transition: var(--transition-fast);
  border: 1px solid rgba(255,255,255,0.06);
}
.footer-social a:hover { background: var(--primary); color: white; border-color: var(--primary); transform: translateY(-2px); }
.footer-links h4 { font-size: 13.5px; font-weight: 700; color: rgba(255,255,255,0.90); margin-bottom: 18px; letter-spacing: 0.3px; }
.footer-links li { margin-bottom: 11px; }
.footer-links a { font-size: 13px; color: rgba(255,255,255,0.50); transition: var(--transition-fast); display: inline-flex; align-items: center; gap: 6px; }
.footer-links a::before { content: '→'; opacity: 0; font-size: 11px; transform: translateX(-6px); transition: var(--transition-fast); }
.footer-links a:hover { color: white; padding-left: 4px; }
.footer-links a:hover::before { opacity: 1; transform: translateX(0); }
.footer-contact h4 { font-size: 13.5px; font-weight: 700; color: rgba(255,255,255,0.90); margin-bottom: 18px; }
.footer-contact p { display: flex; align-items: center; gap: 10px; font-size: 13px; margin-bottom: 12px; line-height: 1.5; }
.footer-contact p i { color: var(--primary); width: 16px; flex-shrink: 0; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 22px 0;
  background: rgba(0,0,0,0.15);
}
.footer-bottom .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; }
.footer-bottom p { font-size: 13px; }
.footer-icp { font-size: 12px; color: rgba(255,255,255,0.25); }

/* ==================== 新闻列表 ==================== */
.news-list { display: grid; gap: 24px; }
.news-item {
  background: white;
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-light);
  transition: var(--transition);
  display: flex;
  gap: 20px;
}
.news-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.news-item-image {
  width: 200px;
  height: 140px;
  border-radius: var(--radius);
  overflow: hidden;
  flex-shrink: 0;
}
.news-item-image img { width: 100%; height: 100%; object-fit: cover; }
.news-item-content { flex: 1; min-width: 0; }
.news-date {
  display: inline-block;
  font-size: 12.5px;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 10px;
}
.news-item h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 10px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-item h2 a { color: inherit; transition: color 0.2s; }
.news-item h2 a:hover { color: var(--primary); }
.news-item p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.65;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--primary);
  transition: var(--transition-fast);
}
.read-more:hover { gap: 10px; }

/* ==================== 新闻详情 ==================== */
.news-detail { max-width: 800px; margin: 0 auto; }
.news-detail h1 {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 800;
  color: var(--secondary);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
  line-height: 1.3;
}
.news-meta { margin-bottom: 20px; }
.news-cover { margin-bottom: 24px; border-radius: var(--radius-lg); overflow: hidden; }
.news-cover img { width: 100%; height: auto; max-height: 400px; object-fit: cover; }
.news-content {
  font-size: 15.5px;
  color: var(--text);
  line-height: 1.85;
  padding: 28px;
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-light);
}
.news-content p { margin-bottom: 16px; }
.news-content p:last-child { margin-bottom: 0; }

/* ==================== 相关新闻 ==================== */
.news-related {
  max-width: 800px;
  margin: 36px auto 0;
  padding: 24px;
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-light);
}
.news-related h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border-light);
}
.news-related ul { list-style: none; }
.news-related li { padding: 10px 0; border-bottom: 1px solid var(--border-light); }
.news-related li:last-child { border-bottom: none; }
.news-related a {
  font-size: 14.5px;
  color: var(--text);
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 10px;
}
.news-related a::before {
  content: '→';
  color: var(--primary);
  opacity: 0;
  transform: translateX(-6px);
  transition: var(--transition-fast);
}
.news-related a:hover { color: var(--primary); padding-left: 8px; }
.news-related a:hover::before { opacity: 1; transform: translateX(0); }

/* ==================== 响应式 - 全面美化 ==================== */
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .product-detail { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .model-grid { grid-template-columns: 1fr; max-width: 500px; }
  .steps-grid::before { display: none; }
  .news-item { flex-direction: column; }
  .news-item-image { width: 100%; height: 200px; }
}

/* ===== 平板端 (≤768px) ===== */
@media (max-width: 768px) {
  .top-bar { display: none; }

  /* 手机导航 - 全屏侧滑 */
  .main-header { height: 60px; }
  .main-header .container { height: 60px; padding: 0 16px; }
  .main-nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 280px;
    height: 100vh;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    flex-direction: column;
    padding: 80px 0 24px;
    box-shadow: 4px 0 32px rgba(0,0,0,0.15);
    z-index: 999;
    gap: 0;
    backdrop-filter: blur(20px);
    border-right: 1px solid var(--border-light);
    transform: translateX(-100%);
    transition: transform 0.35s cubic-bezier(0.4,0,0.2,1);
  }
  .main-nav.open {
    display: flex;
    transform: translateX(0);
  }
  .main-nav a {
    padding: 14px 24px;
    border-radius: 0;
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    border-left: 3px solid transparent;
    transition: all 0.2s ease;
  }
  .main-nav a:hover,
  .main-nav a.active {
    background: rgba(220,38,38,0.05);
    color: var(--primary);
    border-left-color: var(--primary);
    padding-left: 28px;
  }
  .main-nav a::after { display: none; }
  .mobile-lang-switch {
    display: flex !important;
    align-items: center;
    gap: 8px;
    margin-top: 12px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
    color: var(--text-light) !important;
    font-weight: 500 !important;
  }
  .mobile-lang-switch:hover {
    color: var(--primary) !important;
    border-left-color: transparent !important;
    padding-left: 24px !important;
  }

  /* 汉堡按钮 */
  .mobile-menu-btn {
    display: flex;
    margin-left: auto;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    transition: background 0.2s ease;
  }
  .mobile-menu-btn:active { background: var(--bg2); }
  .mobile-menu-btn span { width: 22px; height: 2.5px; }

  /* 遮罩层 */
  .nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15,23,42,0.45);
    z-index: 998;
    backdrop-filter: blur(4px);
    opacity: 0;
    transition: opacity 0.3s ease;
  }
  .nav-overlay.active { display: block; opacity: 1; }

  .header-right { display: none; }
  .logo-sub { display: none; }
  .logo-icon { width: 38px; height: 38px; font-size: 18px; }
  .logo-main { font-size: 18px; }

  /* Hero 区域 */
  .hero-carousel { height: auto; min-height: 400px; }
  .carousel-wrapper,
  .carousel-slides { height: auto; min-height: 400px; }
  .carousel-slide { height: auto; min-height: 400px; }
  .carousel-content { height: auto; min-height: 400px; padding: 80px 0 60px; }
  .hero-content { padding: 0 16px; }
  .hero-badge { font-size: 12px; padding: 6px 14px; margin-bottom: 16px; }
  .hero h1 { font-size: clamp(28px, 6vw, 40px); letter-spacing: -1px; line-height: 1.12; }
  .hero .hero-sub { font-size: 15px; color: rgba(255,255,255,0.88); }
  .hero .hero-slogan { font-size: 12.5px; margin-bottom: 28px; }
  .hero-btns { flex-direction: column; gap: 10px; }
  .hero-btns .btn-primary,
  .hero-btns .btn-outline { width: 100%; justify-content: center; padding: 13px 24px; font-size: 14px; }
  .hero-stats { gap: 20px; margin-top: 36px; flex-wrap: wrap; }
  .hero-stat .num { font-size: 26px; }
  .hero-stat .label { font-size: 11px; }

  /* 轮播按钮 */
  .carousel-btn { width: 36px; height: 36px; }
  .carousel-btn.prev { left: 10px; }
  .carousel-btn.next { right: 10px; }
  .carousel-dots { bottom: 16px; gap: 6px; }
  .carousel-dot { width: 6px; height: 6px; }
  .carousel-dot.active { width: 20px; }

  /* 信任徽章栏 */
  .trust-bar { padding: 14px 0; }
  .trust-bar-inner {
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px 20px;
    padding: 0 16px;
  }
  .trust-item { font-size: 12px; gap: 5px; }
  .trust-item i { font-size: 13px; }
  .trust-divider { display: none; }

  /* 通用区块 */
  .section { padding: 48px 0; }
  .section-header h2 { font-size: 26px; }
  .section-header p { font-size: 14px; }
  .section-tag { font-size: 11px; padding: 4px 12px; }

  /* 产品卡片 */
  .products-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; padding: 0 10px; }
  .product-card { border-radius: var(--radius); }
  .product-card-img { aspect-ratio: 1/1; }
  .product-card-body { padding: 10px 12px 12px; }
  .product-card-factory { font-size: 10.5px; margin-bottom: 4px; }
  .product-card h3 { font-size: 13px; line-height: 1.35; margin-bottom: 6px; }
  .product-card-desc { display: none; }
  .product-card-price { margin-bottom: 8px; }
  .price-value { font-size: 18px; }
  .price-unit { font-size: 11px; }
  .product-badge { font-size: 9px; padding: 3px 8px; top: 8px; left: 8px; }

  /* 新闻动态 */
  .news-grid { grid-template-columns: 1fr; gap: 12px; padding: 0 10px; }
  .news-card { border-radius: var(--radius); }
  .news-card-img { height: 140px; }
  .news-card-body { padding: 16px; }
  .news-card h3 { font-size: 14px; }
  .news-card-excerpt { font-size: 12px; }

  /* 厂家卡片 */
  .factories-grid { grid-template-columns: 1fr; gap: 12px; padding: 0 10px; }
  .factory-card { padding: 16px; border-radius: var(--radius); }
  .factory-logo { width: 52px; height: 52px; border-radius: 14px; font-size: 22px; }
  .factory-name { font-size: 15px; }
  .factory-info { font-size: 12px; }

  /* 流程步骤 */
  .steps-section { padding: 48px 0; }
  .steps-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    padding: 0 10px;
  }
  .step-item { padding: 20px 14px; }
  .step-num { width: 36px; height: 36px; font-size: 14px; margin-bottom: 12px; }
  .step-item h4 { font-size: 14px; }
  .step-item p { font-size: 12px; }

  /* 关于我们 */
  .about-grid { gap: 32px; }
  .about-content h2 { font-size: 22px; }
  .about-content > p { font-size: 14px; }
  .about-stats { gap: 16px; }
  .about-stat .num { font-size: 26px; }
  .about-visual { height: 200px; border-radius: var(--radius-lg); }

  /* 加入我们 */
  .join-section { padding: 48px 0; }
  .join-header h2 { font-size: 24px; }
  .join-header p { font-size: 14px; }
  .join-cards { grid-template-columns: 1fr; gap: 14px; padding: 0 10px; }
  .join-card { padding: 24px 20px; }
  .join-icon { width: 52px; height: 52px; font-size: 22px; }

  /* 页脚 */
  .footer-grid { grid-template-columns: 1fr; gap: 28px; padding: 0 10px; }
  .footer-brand { text-align: center; }
  .footer-logo { justify-content: center; }
  .footer-desc { text-align: center; }
  .footer-social { justify-content: center; }
  .footer-links h4 { font-size: 14px; margin-bottom: 14px; }
  .footer-links a { font-size: 13px; padding: 5px 0; }
  .footer-bottom { padding: 16px 0; }
  .footer-bottom .container { flex-direction: column; text-align: center; gap: 6px; }

  /* 表单 */
  .form-grid { grid-template-columns: 1fr; gap: 14px; }
  .modal { padding: 24px 20px; border-radius: var(--radius-lg); }
  .modal h2 { font-size: 20px; }

  /* 后台 */
  .admin-layout { flex-direction: column; }
  .admin-sidebar { width: 100%; height: auto; position: static; }
}

/* ===== 平板端 (≤1024px) ===== */
@media (max-width: 1024px) {
  /* 筛选栏 */
  .filter-bar { flex-wrap: wrap; gap: 10px; }
  .filter-bar > span:last-child { order: -1; width: 100%; text-align: right; margin-left: 0 !important; }
  
  /* 新闻列表 */
  .news-item { flex-direction: column; }
  .news-item-image { width: 100%; height: 200px; }
  
  /* 产品详情 */
  .product-detail { grid-template-columns: 1fr; gap: 32px; }
  .product-gallery { position: static; }
  .product-main-img { max-height: 300px; }
  
  /* 面包屑 */
  .breadcrumb { padding: 12px 0; font-size: 12px; }
  
  /* 分页 */
  .pagination a, .pagination span { width: 36px; height: 36px; font-size: 13px; }
  
  /* 表单 */
  .form-grid { grid-template-columns: 1fr; }
}

/* ===== 平板端 (≤768px) ===== */
@media (max-width: 768px) {
  /* 产品网格 */
  .products-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  
  /* 页头 */
  .top-bar { display: none; }
  
  /* 厂家卡片 */
  .factories-grid { grid-template-columns: repeat(2, 1fr); }
  
  /* 新闻列表 */
  .news-item { padding: 16px; }
  .news-item-content h2 { font-size: 16px; }
  
  /* 联系我们 */
  .contact-info { grid-template-columns: 1fr; }
  
  /* 关于我们 */
  .mission-vision { grid-template-columns: 1fr; gap: 20px; }
  .mission-card, .vision-card { padding: 24px; }
  .mission-icon, .vision-icon { width: 60px; height: 60px; font-size: 24px; }
  .timeline::before { left: 30px; }
  .timeline-item:nth-child(odd) .timeline-content,
  .timeline-item:nth-child(even) .timeline-content {
    margin-left: 70px;
    margin-right: 0;
    text-align: left;
  }
  .timeline-year {
    left: 30px;
    width: 60px;
    height: 60px;
    font-size: 11px;
    transform: translateX(-50%);
  }
  .team-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .team-card { padding: 20px; }
  .team-avatar { width: 60px; height: 60px; font-size: 24px; }
  .team-card h3 { font-size: 15px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .stat-card { padding: 20px 12px; }
  .stat-num { font-size: 30px; }
  
  /* C端服务 */
  .c-service { grid-template-columns: 1fr; gap: 32px; }
  .c-service-content h2 { font-size: 22px; }
  .c-service-icon { width: 140px; height: 140px; font-size: 48px; }
}

/* ===== 小屏手机 (≤480px) ===== */
@media (max-width: 480px) {
  .container { padding: 0 12px; }

  /* Hero */
  .carousel-content { padding: 64px 0 48px; }
  .hero h1, .carousel-content h1 { font-size: 17.33px; }
  .hero-badge { font-size: 11px; padding: 5px 12px; }
  .hero .hero-sub { font-size: 14px; }
  .hero .hero-slogan { font-size: 11.5px; }
  .hero-stats { gap: 16px; }
  .hero-stat .num { font-size: 22px; }
  .hero-stat .label { font-size: 10px; }

  /* 信任栏 */
  .trust-bar-inner { gap: 8px 14px; }
  .trust-item { font-size: 11px; }

  /* 产品 */
  .products-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; padding: 0 8px; }
  .product-card-body { padding: 8px 10px 10px; }
  .product-card h3 { font-size: 12px; }
  .price-value { font-size: 16px; }
  .product-card-footer { flex-wrap: wrap; justify-content: flex-end; gap: 6px; }
  .product-card-footer .btn-sm,
  .product-card-footer .btn-inquiry {
    font-size: 10.5px;
    padding: 5px 10px;
    flex-shrink: 0;
    min-width: 60px;
    text-align: center;
  }

  /* 流程 */
  .steps-grid { grid-template-columns: 1fr 1fr; gap: 10px; padding: 0 8px; }
  .step-item { padding: 16px 10px; }
  .step-num { width: 32px; height: 32px; font-size: 13px; }
  .step-item h4 { font-size: 13px; }
  .step-item p { font-size: 11px; }

  /* 区块 */
  .section-header h2 { font-size: 22px; }
  .section-header p { font-size: 13px; }

  /* 关于 */
  .about-visual { height: 160px; }
  .about-stat .num { font-size: 22px; }

  /* 页脚 */
  .footer { padding-top: 48px; }
  
  /* 新闻列表 */
  .news-item { flex-direction: column; padding: 12px; }
  .news-item-image { width: 100%; height: 160px; }
  .news-item-content h2 { font-size: 14px; line-height: 1.4; }
  .news-item-content p { font-size: 12px; display: none; }
  .news-item-meta { font-size: 11px; }
  
  /* 新闻详情 */
  .news-detail-header h1 { font-size: 20px; }
  .news-detail-meta { font-size: 12px; flex-direction: column; gap: 6px; }
  .news-detail-content { font-size: 14px; line-height: 1.7; }
  .news-detail-content img { max-width: 100%; height: auto; }
  
  /* 产品详情 */
  .product-detail { grid-template-columns: 1fr; gap: 24px; }
  .product-main-img { max-height: 240px; }
  .product-gallery-thumbs { grid-template-columns: repeat(4, 1fr); gap: 6px; }
  .product-gallery-thumb { height: 60px; }
  .product-info h1 { font-size: 20px; }
  .product-price-value { font-size: 28px; }
  .product-specs { font-size: 13px; }
  .product-detail-content { font-size: 14px; }
  
  /* 联系我们 */
  .contact-info { grid-template-columns: 1fr; gap: 16px; }
  .contact-item { padding: 16px; }
  .contact-item-icon { width: 44px; height: 44px; font-size: 18px; }
  .contact-form { padding: 20px; }
  
  /* 筛选栏 */
  .filter-bar select { padding: 10px 24px 10px 12px; font-size: 13px; }
  
  /* 按钮 */
  .btn { padding: 12px 20px; font-size: 14px; }
  .btn-lg { padding: 14px 24px; font-size: 15px; }
  
  /* 表单 */
  .form-group label { font-size: 13px; }
  .form-group input, .form-group textarea, .form-group select { padding: 12px; font-size: 14px; }
  
  /* 模态框 */
  .modal { padding: 16px; margin: 8px; max-height: 95vh; }
  .modal h2 { font-size: 18px; }
  .wechat-qr-section { padding: 16px; }
  .wechat-qr-code { width: 120px; height: 120px; }
}

/* ==================== 动画 ==================== */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes slideUp {
  from { opacity: 0; transform: translateY(32px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes pulse { 0%,100% { transform: scale(1); } 50% { transform: scale(1.05); } }
.fade-in-up { animation: fadeInUp 0.6s cubic-bezier(0.4,0,0.2,1) forwards; }
.pulse { animation: pulse 2s infinite; }

/* 滚动显现 */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.65s ease, transform 0.65s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ==================== 滚动条 ==================== */
::-webkit-scrollbar { width: 7px; height: 7px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-light); }