/* ===== 配色体系：浅色为主 + 首屏深色 ===== */
:root {
  /* 品牌色 */
  --orange: #D4822A;
  --orange-light: #E89B3A;
  --orange-dark: #B06A1E;
  --orange-dim: rgba(212, 130, 42, 0.1);
  --green: #6B7A2A;
  --green-light: #8A9A3A;
  --green-dim: rgba(107, 122, 42, 0.1);

  /* 深色区（首屏/数字化/页脚） */
  --dark-bg: #161410;
  --dark-bg-2: #1E1C16;
  --dark-card: #26231C;
  --dark-text: #F0EDE6;
  --dark-text-2: #9A958A;
  --dark-border: rgba(212, 130, 42, 0.15);

  /* 浅色区（内容主体） */
  --light-bg: #F7F6F3;
  --light-bg-2: #FFFFFF;
  --light-card: #FFFFFF;
  --light-text: #1A1814;
  --light-text-2: #6B665C;
  --light-text-3: #9A958A;
  --light-border: #E8E5DE;
  --light-border-hover: rgba(212, 130, 42, 0.4);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--light-bg);
  color: var(--light-text);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 32px; }
.section { padding: 88px 0; position: relative; }
.section.bg-light { background: var(--light-bg); }
.section.bg-white { background: var(--light-bg-2); }
.section.bg-dark { background: var(--dark-bg); color: var(--dark-text); }

/* ===== 通用标题（浅色区） ===== */
.section-label {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 12px; font-weight: 600; letter-spacing: 3px;
  text-transform: uppercase; color: var(--orange);
  margin-bottom: 16px;
}
.section-label::before {
  content: ''; width: 28px; height: 2px; background: var(--orange);
}
.section-title {
  font-size: 38px; font-weight: 700; line-height: 1.25;
  margin-bottom: 14px; letter-spacing: -0.3px; color: var(--light-text);
}
.section-title .highlight { color: var(--orange); }
.section-desc {
  font-size: 16px; color: var(--light-text-2);
  max-width: 640px; margin-bottom: 48px;
}
.bg-dark .section-title { color: var(--dark-text); }
.bg-dark .section-desc { color: var(--dark-text-2); }

/* ===== Navigation（透明→白色滚动切换） ===== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 16px 0; transition: all 0.3s ease;
  background: transparent;
}
.nav.scrolled {
  padding: 10px 0;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 2px 16px rgba(0,0,0,0.06);
  border-bottom: 1px solid var(--light-border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; }
.nav-logo { display: flex; align-items: center; gap: 10px; }
.nav-logo-wrap {
  background: transparent;
  padding: 4px 10px;
  border-radius: 4px;
  display: flex; align-items: center;
  transition: all 0.3s;
}
.nav-logo-wrap:hover {
  background: rgba(212, 130, 42, 0.06);
}
.nav-logo img { height: 44px; width: auto; display: block; object-fit: contain; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a {
  font-size: 14px; font-weight: 500; color: #FFFFFF;
  transition: color 0.2s; position: relative;
}
.nav.scrolled .nav-links a { color: var(--light-text-2); }
.nav-links a:hover { color: var(--orange); }
.nav-links a::after {
  content: ''; position: absolute; bottom: -6px; left: 0;
  width: 0; height: 2px; background: var(--orange); transition: width 0.3s;
}
.nav-links a:hover::after { width: 100%; }
.nav-cta {
  padding: 9px 22px;
  background: var(--orange);
  color: #fff; border-radius: 3px;
  font-size: 14px; font-weight: 600; transition: all 0.3s;
  border: none; cursor: pointer;
}
.nav-cta:hover { background: var(--orange-light); box-shadow: 0 4px 16px rgba(212, 130, 42, 0.35); }

/* ===== Hero Carousel（深色首屏） ===== */
.hero {
  position: relative; height: 100vh; min-height: 600px;
  overflow: hidden; background: var(--dark-bg);
}
.hero-slides { position: relative; width: 100%; height: 100%; }
.hero-slide {
  position: absolute; inset: 0; opacity: 0;
  transition: opacity 1s ease; display: flex; align-items: center;
}
.hero-slide.active { opacity: 1; }
.hero-slide-bg {
  position: absolute; inset: 0; background-size: cover; background-position: center;
}
.hero-slide-bg::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(22,20,16,0.95) 0%, rgba(22,20,16,0.65) 50%, rgba(22,20,16,0.35) 100%);
}
.hero-industrial-lines {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background-image: repeating-linear-gradient(90deg, transparent, transparent 100px, rgba(212,130,42,0.025) 100px, rgba(212,130,42,0.025) 101px);
}
.hero-content { position: relative; z-index: 3; max-width: 660px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px; background: var(--orange-dim);
  border: 1px solid rgba(212,130,42,0.3); border-radius: 2px;
  font-size: 12px; color: var(--orange); margin-bottom: 22px; font-weight: 600;
  letter-spacing: 1px;
}
.hero-badge-dot {
  width: 5px; height: 5px; background: var(--orange); animation: pulse 2s infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }
.hero-title {
  font-size: 48px; font-weight: 900; line-height: 1.15;
  margin-bottom: 20px; letter-spacing: -0.5px; color: var(--dark-text);
}
.hero-title .line2 { display: block; color: var(--orange); }
.hero-subtitle {
  font-size: 16px; color: rgba(255,255,255,0.92);
  margin-bottom: 30px; max-width: 540px; line-height: 1.8;
}
.hero-capabilities {
  display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 32px;
}
.hero-cap {
  padding: 5px 12px; background: rgba(255,255,255,0.04);
  border: 1px solid var(--dark-border); border-radius: 2px;
  font-size: 12px; color: rgba(255,255,255,0.9);
  display: flex; align-items: center; gap: 6px;
}
.hero-cap-icon { width: 4px; height: 4px; background: var(--orange); }
.hero-ctas { display: flex; gap: 12px; }
.btn-primary {
  padding: 13px 30px;
  background: var(--orange);
  color: #fff; border-radius: 3px;
  font-size: 15px; font-weight: 600; border: none; cursor: pointer;
  transition: all 0.3s; display: inline-flex; align-items: center; gap: 8px;
}
.btn-primary:hover { background: var(--orange-light); box-shadow: 0 8px 24px rgba(212, 130, 42, 0.35); transform: translateY(-1px); }
.btn-secondary {
  padding: 13px 30px; background: transparent; color: var(--dark-text);
  border: 1px solid rgba(154,149,138,0.3); border-radius: 3px;
  font-size: 15px; font-weight: 500; cursor: pointer; transition: all 0.3s;
  display: inline-flex; align-items: center; gap: 8px;
}
.btn-secondary:hover { background: rgba(255,255,255,0.05); border-color: var(--dark-text-2); }

.hero-dots {
  position: absolute; bottom: 32px; left: 32px; z-index: 10;
  display: flex; gap: 8px; align-items: center;
}
.hero-dot {
  width: 28px; height: 3px; border-radius: 2px;
  background: rgba(255,255,255,0.2); cursor: pointer; transition: all 0.3s;
}
.hero-dot.active { background: var(--orange); width: 44px; }
.hero-slide-num {
  position: absolute; bottom: 28px; right: 32px; z-index: 10;
  font-family: 'Courier New', monospace; font-size: 12px;
  color: rgba(255,255,255,0.9); letter-spacing: 2px;
}
.hero-slide-num .current { color: var(--orange); font-size: 16px; font-weight: 700; }

/* 首屏数据统计条 */
.hero-stats-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 10;
  background: rgba(22, 20, 16, 0.85);
  backdrop-filter: blur(10px);
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 16px 0;
}
.hero-stats-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
}
.hero-stat-item {
  text-align: center;
  padding: 8px 16px;
  border-right: 1px solid rgba(255,255,255,0.08);
  transition: all 0.3s;
}
.hero-stat-item:last-child {
  border-right: none;
}
.hero-stat-item:hover {
  background: rgba(212,130,42,0.1);
}
.hero-stat-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--orange);
  line-height: 1;
  margin-bottom: 4px;
  font-variant-numeric: tabular-nums;
}
.hero-stat-num .unit {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  font-weight: 500;
}
.hero-stat-label {
  font-size: 12px;
  color: rgba(255,255,255,0.7);
  letter-spacing: 0.5px;
}

@media (max-width: 1024px) {
  .hero-stats-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .hero-stat-item:nth-child(3) {
    border-right: none;
  }
  .hero-stat-item:nth-child(4), .hero-stat-item:nth-child(5) {
    border-top: 1px solid rgba(255,255,255,0.08);
  }
}
@media (max-width: 640px) {
  .hero-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero-stat-item:nth-child(2n) {
    border-right: none;
  }
  .hero-stat-num {
    font-size: 22px;
  }
}

/* ===== 四大核心工艺（浅色区） ===== */
.cap-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.cap-card {
  background: var(--light-card); border: 1px solid var(--light-border);
  border-radius: 4px; overflow: hidden; transition: all 0.35s;
  display: flex; flex-direction: column;
}
.cap-card:hover {
  transform: translateY(-4px); border-color: var(--light-border-hover);
  box-shadow: 0 12px 36px rgba(0,0,0,0.08);
}
.cap-card-img {
  height: 150px; position: relative; overflow: hidden;
  background: linear-gradient(135deg, #F0EDE6, #E8E5DE);
}
.cap-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.cap-card:hover .cap-card-img img { transform: scale(1.06); }
.cap-card-tag {
  position: absolute; top: 10px; left: 10px;
  padding: 3px 10px; background: rgba(255,255,255,0.92);
  border-radius: 2px; font-size: 11px; color: var(--orange);
  font-weight: 600; letter-spacing: 0.5px;
}
.cap-card-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.cap-card-title {
  font-size: 17px; font-weight: 700; margin-bottom: 8px;
  display: flex; align-items: center; gap: 8px; color: var(--light-text);
}
.cap-card-title::before {
  content: ''; width: 3px; height: 16px; background: var(--orange); border-radius: 1px;
}
.cap-card-desc { font-size: 13px; color: var(--light-text-2); margin-bottom: 14px; line-height: 1.7; }
.cap-card-specs {
  display: flex; flex-direction: column; gap: 6px; margin-top: auto;
  padding-top: 12px; border-top: 1px solid var(--light-border);
}
.cap-spec { display: flex; justify-content: space-between; font-size: 12px; }
.cap-spec-label { color: var(--light-text-3); }
.cap-spec-val { color: var(--orange); font-weight: 600; }

/* ===== 工厂实力与设备（浅色区） ===== */
.factory-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 52px; align-items: center; }
.factory-img-wrap { position: relative; }
.factory-main-img { border-radius: 4px; overflow: hidden; box-shadow: 0 16px 44px rgba(0,0,0,0.12); }
.factory-main-img img { width: 100%; height: 360px; object-fit: cover; }
.factory-stats-bar {
  display: grid; grid-template-columns: repeat(3, 1fr);
  background: var(--light-card); border: 1px solid var(--light-border);
  border-top: none; border-radius: 0 0 4px 4px; overflow: hidden;
}
.factory-stat-item { padding: 16px 14px; text-align: center; border-right: 1px solid var(--light-border); }
.factory-stat-item:last-child { border-right: none; }
.factory-stat-num { font-size: 24px; font-weight: 700; color: var(--orange); line-height: 1; margin-bottom: 4px; }
.factory-stat-num .unit { font-size: 12px; color: var(--light-text-3); font-weight: 400; }
.factory-stat-label { font-size: 11px; color: var(--light-text-2); }

.factory-content h3 { font-size: 24px; font-weight: 700; margin-bottom: 12px; line-height: 1.3; color: var(--light-text); }
.factory-content > p { font-size: 14px; color: var(--light-text-2); margin-bottom: 24px; line-height: 1.8; }
.equip-list { display: flex; flex-direction: column; gap: 10px; margin-bottom: 20px; }
.equip-row {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px; background: var(--light-card);
  border: 1px solid var(--light-border); border-radius: 3px;
  transition: all 0.3s;
}
.equip-row:hover { border-color: var(--light-border-hover); box-shadow: 0 4px 12px rgba(0,0,0,0.04); }
.equip-icon {
  width: 34px; height: 34px; border-radius: 4px;
  background: var(--orange-dim);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.equip-icon svg { width: 17px; height: 17px; stroke: var(--orange); fill: none; stroke-width: 1.6; }
.equip-info { flex: 1; }
.equip-name { font-size: 13px; font-weight: 600; margin-bottom: 1px; color: var(--light-text); }
.equip-desc { font-size: 11px; color: var(--light-text-3); }
.equip-count { font-size: 18px; font-weight: 700; color: var(--orange); font-variant-numeric: tabular-nums; }
.equip-count .unit { font-size: 11px; color: var(--light-text-3); font-weight: 400; }

.factory-certs { display: flex; flex-wrap: wrap; gap: 8px; }
.factory-cert {
  padding: 4px 11px; background: var(--light-card);
  border: 1px solid var(--light-border); border-radius: 2px;
  font-size: 11px; color: var(--light-text-2); font-weight: 500;
}

/* 厂容厂貌展示 */
.factory-view-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: 240px 240px;
  gap: 16px;
  margin-top: 36px;
}
.factory-view-item {
  position: relative;
  overflow: hidden;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.factory-view-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}
.factory-view-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.15);
}
.factory-view-item:hover img {
  transform: scale(1.08);
}
.factory-view-large {
  grid-column: span 2;
  grid-row: span 2;
}
.factory-view-wide {
  grid-column: span 2;
}
.factory-view-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 20px;
  background: linear-gradient(transparent, rgba(0,0,0,0.8));
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: all 0.3s ease;
}
.factory-view-item:hover .factory-view-overlay {
  padding-bottom: 24px;
}
.factory-view-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--orange);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  border-radius: 3px;
  width: fit-content;
  letter-spacing: 0.5px;
}
.factory-view-title {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  text-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

@media (max-width: 1024px) {
  .factory-view-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: auto;
  }
  .factory-view-large, .factory-view-wide {
    grid-column: span 2;
    grid-row: span 1;
  }
  .factory-view-item {
    height: 220px;
  }
  .factory-view-large {
    height: 300px;
  }
}

/* ===== 产品中心（浅色区） ===== */
.product-tabs { display: flex; gap: 6px; margin-bottom: 32px; flex-wrap: wrap; }
.product-tab {
  padding: 7px 18px; background: var(--light-card); border: 1px solid var(--light-border);
  border-radius: 2px; font-size: 13px; color: var(--light-text-2);
  cursor: pointer; transition: all 0.3s; font-weight: 500;
}
.product-tab:hover { border-color: var(--light-border-hover); color: var(--light-text); }
.product-tab.active { background: var(--orange-dim); border-color: var(--orange); color: var(--orange); }
.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.product-card {
  background: var(--light-card); border: 1px solid var(--light-border);
  border-radius: 4px; overflow: hidden; transition: all 0.3s;
}
.product-card:hover { transform: translateY(-3px); border-color: var(--light-border-hover); box-shadow: 0 8px 24px rgba(0,0,0,0.06); }
.product-card-img {
  height: 200px; background: linear-gradient(135deg, #F0EDE6, #E8E5DE);
  display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden;
}
.product-card-img img { width: 100%; height: 100%; object-fit: cover; }
.product-card-img-placeholder {
  width: 50px; height: 50px; border-radius: 50%;
  background: var(--orange-dim); display: flex; align-items: center; justify-content: center;
}
.product-card-img-placeholder svg { width: 24px; height: 24px; stroke: var(--orange); fill: none; stroke-width: 1.4; opacity: 0.7; }
.product-card-body { padding: 16px; }
.product-card-category { font-size: 10px; color: var(--orange); letter-spacing: 1.5px; font-weight: 600; margin-bottom: 5px; }
.product-card-name { font-size: 14px; font-weight: 600; margin-bottom: 8px; color: var(--light-text); }
.product-card-params { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; margin-bottom: 10px; }
.product-param { font-size: 11px; color: var(--light-text-3); }
.product-param span { color: var(--light-text-2); font-weight: 500; }
.product-card-link {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 12px; color: var(--orange); font-weight: 500;
}
.product-card-link svg { width: 11px; height: 11px; stroke: var(--orange); fill: none; stroke-width: 2; transition: transform 0.2s; }
.product-card:hover .product-card-link svg { transform: translateX(3px); }

/* ===== 质量体系（浅色区） ===== */
.quality-flow {
  display: flex; align-items: stretch; gap: 0; margin-bottom: 40px;
  overflow-x: auto; padding-bottom: 10px;
}
.quality-node { flex: 1; min-width: 100px; text-align: center; position: relative; padding: 0 4px; }
.quality-node:not(:last-child)::after {
  content: ''; position: absolute; top: 19px; right: -50%;
  width: 100%; height: 1px;
  background: linear-gradient(90deg, var(--orange), var(--light-border)); z-index: 0;
}
.quality-node-dot {
  width: 38px; height: 38px; border-radius: 50%; background: var(--light-card);
  border: 2px solid var(--orange); display: flex; align-items: center; justify-content: center;
  margin: 0 auto 8px; position: relative; z-index: 1;
  font-size: 12px; font-weight: 700; color: var(--orange);
}
.quality-node-title { font-size: 12px; font-weight: 600; margin-bottom: 2px; color: var(--light-text); }
.quality-node-desc { font-size: 10px; color: var(--light-text-3); }
.quality-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.quality-stat {
  text-align: center; padding: 24px 14px; background: var(--light-card);
  border: 1px solid var(--light-border); border-radius: 4px; transition: all 0.3s;
}
.quality-stat:hover { border-color: var(--light-border-hover); transform: translateY(-2px); box-shadow: 0 6px 18px rgba(0,0,0,0.05); }
.quality-stat-val {
  font-size: 34px; font-weight: 700; color: var(--orange);
  line-height: 1; margin-bottom: 6px; font-variant-numeric: tabular-nums;
}
.quality-stat-val .unit { font-size: 14px; color: var(--light-text-2); font-weight: 400; }
.quality-stat-label { font-size: 12px; color: var(--light-text-2); font-weight: 500; }
.quality-stat-sub { font-size: 10px; color: var(--light-text-3); margin-top: 2px; }

/* ===== 数字化管理（深色区，30%科技感） ===== */
.digital {
  background: linear-gradient(135deg, var(--dark-bg) 0%, #242018 100%);
  position: relative; overflow: hidden; color: var(--dark-text);
}
.digital::before {
  content: ''; position: absolute; top: -80px; right: -80px;
  width: 350px; height: 350px;
  background: radial-gradient(circle, rgba(107,122,42,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.digital .section-label { color: var(--green-light); }
.digital .section-label::before { background: var(--green-light); }
.digital-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 44px; align-items: center; position: relative; z-index: 1; }
.digital-intro h3 { font-size: 26px; font-weight: 700; margin-bottom: 12px; line-height: 1.3; color: var(--dark-text); }
.digital-intro h3 .highlight { color: var(--green-light); }
.digital-intro p { font-size: 14px; color: var(--dark-text-2); margin-bottom: 20px; line-height: 1.8; }
.digital-tag-list { display: flex; flex-direction: column; gap: 8px; }
.digital-tag-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 14px; background: var(--green-dim);
  border: 1px solid rgba(107,122,42,0.25); border-radius: 3px;
  font-size: 12px; color: rgba(255,255,255,0.9);
}
.digital-tag-item svg { width: 15px; height: 15px; stroke: var(--green-light); fill: none; stroke-width: 1.8; flex-shrink: 0; }
.digital-tag-item strong { color: var(--green-light); font-weight: 600; }

.digital-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.digital-card {
  background: #fff; 
  border: 2px solid #e8e8e8;
  border-radius: 12px; 
  padding: 32px 24px; 
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
.digital-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--green-light), var(--orange));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.digital-card:hover { 
  border-color: var(--orange); 
  transform: translateY(-12px); 
  box-shadow: 0 16px 40px rgba(212,130,42,0.2), 0 4px 12px rgba(0,0,0,0.08);
  background: linear-gradient(180deg, #fff 0%, #fffaf5 100%);
}
.digital-card:hover::before { transform: scaleX(1); }
.digital-card:hover .digital-card-icon {
  background: linear-gradient(135deg, var(--orange), #ff8c42);
  transform: scale(1.1) translateY(-4px);
  box-shadow: 0 8px 20px rgba(212,130,42,0.4);
}
.digital-card:hover .digital-card-icon svg {
  stroke: #fff;
  transform: scale(1.1);
}
.digital-card:hover .digital-card-title {
  color: var(--orange);
}
.digital-card:hover .digital-card-desc {
  color: #555;
}
.digital-card:hover .digital-card-arrow {
  opacity: 1;
  transform: translateX(0);
  color: var(--orange);
}
.digital-card:hover .digital-card-click-hint {
  opacity: 1;
  transform: translateY(0);
  background: var(--orange);
  color: #fff;
}
.digital-card-icon {
  width: 56px; height: 56px; border-radius: 14px;
  background: linear-gradient(135deg, rgba(212,130,42,0.1), rgba(212,130,42,0.05));
  display: flex; align-items: center; justify-content: center; margin-bottom: 18px;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.digital-card-icon svg { width: 28px; height: 28px; stroke: var(--orange); fill: none; stroke-width: 1.8; transition: all 0.35s ease; }
.digital-card-title { font-size: 18px; font-weight: 700; margin-bottom: 12px; color: #333; transition: all 0.3s ease; display: flex; align-items: center; justify-content: space-between; }
.digital-card-arrow {
  opacity: 0;
  transform: translateX(-12px);
  transition: all 0.35s ease;
  display: flex;
  align-items: center;
}
.digital-card-arrow svg { width: 22px; height: 22px; stroke: var(--orange); fill: none; stroke-width: 2; }
.digital-card-desc { font-size: 14px; color: #888; line-height: 1.8; transition: color 0.3s ease; margin-bottom: 16px; }
.digital-card-click-hint {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: #f5f5f5;
  border-radius: 6px;
  font-size: 12px;
  color: #999;
  font-weight: 600;
  opacity: 0.7;
  transform: translateY(4px);
  transition: all 0.35s ease;
}
.digital-card-click-hint svg { width: 14px; height: 14px; stroke: currentColor; fill: none; stroke-width: 2; }

/* ===== 客户案例（浅色区） ===== */
.cases-logos { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 36px; align-items: center; }
.cases-logo {
  padding: 10px 20px; background: var(--light-card); border: 1px solid var(--light-border);
  border-radius: 3px; font-size: 13px; font-weight: 600;
  color: var(--light-text-2); transition: all 0.3s;
}
.cases-logo:hover { border-color: var(--orange); color: var(--orange); }

/* 案例图片展示墙 */
.case-gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: 200px 200px;
  gap: 12px;
  margin-bottom: 40px;
}
.case-gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.case-gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.case-gallery-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.15);
}
.case-gallery-item:hover img {
  transform: scale(1.08);
}
.case-gallery-large {
  grid-column: span 2;
  grid-row: span 2;
}
.case-gallery-wide {
  grid-column: span 2;
}
.case-gallery-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 16px;
  background: linear-gradient(transparent, rgba(0,0,0,0.75));
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: all 0.3s ease;
}
.case-gallery-item:hover .case-gallery-overlay {
  padding-bottom: 20px;
}
.case-gallery-tag {
  display: inline-block;
  padding: 3px 10px;
  background: var(--orange);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  border-radius: 2px;
  width: fit-content;
  letter-spacing: 0.5px;
}
.case-gallery-title {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  text-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.cases-section-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--light-text);
  margin-bottom: 24px;
  padding-left: 12px;
  border-left: 4px solid var(--orange);
}

.cases-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.case-card {
  background: var(--light-card); border: 1px solid var(--light-border);
  border-radius: 4px; overflow: hidden; transition: all 0.3s;
}
.case-card:hover { border-color: var(--light-border-hover); transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,0,0,0.06); }

/* 带图片的案例卡片（备用） */
.case-card-with-img {
  display: flex;
  flex-direction: column;
  border-radius: 8px;
}
.case-card-with-img:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.08);
}
.case-card-img {
  position: relative;
  height: 220px;
  overflow: hidden;
  background: linear-gradient(135deg, #F0EDE6, #E8E5DE);
}
.case-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.case-card-with-img:hover .case-card-img img {
  transform: scale(1.06);
}
.case-card-img-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 12px;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  color: var(--orange);
  letter-spacing: 0.5px;
  z-index: 2;
}
.case-card-with-img .case-card-header {
  padding: 16px 20px 0;
}
.case-card-with-img .case-card-body {
  padding: 12px 20px 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.case-card-with-img .case-card-metrics {
  margin-top: auto;
}
.case-card-header { padding: 18px 20px 0; display: flex; justify-content: space-between; align-items: flex-start; }
.case-card-tag {
  padding: 3px 10px; background: var(--orange-dim); color: var(--orange);
  border-radius: 2px; font-size: 11px; font-weight: 600; letter-spacing: 0.5px;
}
.case-card-industry { font-size: 11px; color: var(--light-text-3); }
.case-card-body { padding: 14px 20px 20px; }
.case-card-title { font-size: 16px; font-weight: 700; margin-bottom: 8px; color: var(--light-text); }
.case-card-desc { font-size: 13px; color: var(--light-text-2); margin-bottom: 14px; line-height: 1.7; }
.case-card-metrics {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px;
  padding-top: 14px; border-top: 1px solid var(--light-border);
}
.case-metric-val { font-size: 17px; font-weight: 700; color: var(--orange); margin-bottom: 2px; }
.case-metric-label { font-size: 10px; color: var(--light-text-3); }

/* ===== 联系我们（浅色区） ===== */
.contact { position: relative; overflow: hidden; background: var(--light-bg); }
.contact::before {
  content: ''; position: absolute; bottom: -120px; left: -120px;
  width: 350px; height: 350px;
  background: radial-gradient(circle, rgba(212,130,42,0.04) 0%, transparent 70%);
  pointer-events: none;
}
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 48px; position: relative; z-index: 1; }
.contact-info h2 { font-size: 30px; font-weight: 700; margin-bottom: 12px; line-height: 1.25; color: var(--light-text); }
.contact-info > p { font-size: 14px; color: var(--light-text-2); margin-bottom: 28px; line-height: 1.8; }
.contact-items { display: flex; flex-direction: column; gap: 16px; margin-bottom: 28px; }
.contact-item { display: flex; gap: 12px; align-items: flex-start; }
.contact-item-icon {
  width: 38px; height: 38px; border-radius: 4px; background: var(--orange-dim);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.contact-item-icon svg { width: 17px; height: 17px; stroke: var(--orange); fill: none; stroke-width: 1.7; }
.contact-item-label { font-size: 11px; color: var(--light-text-3); margin-bottom: 2px; letter-spacing: 0.5px; }
.contact-item-value { font-size: 14px; font-weight: 500; color: var(--light-text); }
.contact-form {
  background: var(--light-card); border: 1px solid var(--light-border);
  border-radius: 4px; padding: 28px; box-shadow: 0 4px 20px rgba(0,0,0,0.04);
}
.contact-form-title { font-size: 18px; font-weight: 700; margin-bottom: 4px; color: var(--light-text); }
.contact-form-sub { font-size: 12px; color: var(--light-text-3); margin-bottom: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 10px; }
.form-group { margin-bottom: 10px; }
.form-label { display: block; font-size: 12px; color: var(--light-text-2); margin-bottom: 5px; font-weight: 500; }
.form-label .required { color: var(--orange); }
.form-input, .form-select, .form-textarea {
  width: 100%; padding: 9px 12px; background: var(--light-bg);
  border: 1px solid var(--light-border); border-radius: 3px; color: var(--light-text);
  font-size: 13px; font-family: inherit; transition: all 0.3s;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none; border-color: var(--orange); box-shadow: 0 0 0 3px var(--orange-dim);
}
.form-input::placeholder, .form-textarea::placeholder { color: var(--light-text-3); }
.form-textarea { resize: vertical; min-height: 70px; }
.form-upload {
  padding: 14px; border: 1px dashed var(--light-border); border-radius: 3px;
  text-align: center; cursor: pointer; transition: all 0.3s; background: var(--light-bg);
}
.form-upload:hover { border-color: var(--orange); background: var(--orange-dim); }
.form-upload svg {
  width: 22px; height: 22px; stroke: var(--light-text-3); fill: none;
  stroke-width: 1.5; margin: 0 auto 5px;
}
.form-upload-text { font-size: 12px; color: var(--light-text-2); }
.form-upload-text span { color: var(--orange); font-weight: 500; }
.form-upload-hint { font-size: 10px; color: var(--light-text-3); margin-top: 2px; }
.form-submit {
  width: 100%; padding: 12px;
  background: var(--orange);
  color: #fff; border: none; border-radius: 3px;
  font-size: 14px; font-weight: 600; cursor: pointer; transition: all 0.3s; margin-top: 4px;
}
.form-submit:hover { background: var(--orange-light); box-shadow: 0 4px 16px rgba(212,130,42,0.3); }
.form-submit:disabled { opacity: 0.6; cursor: not-allowed; }

/* ===== Footer（深色区） ===== */
.footer { background: var(--dark-bg); padding: 44px 0 20px; border-top: 1px solid var(--dark-border); color: var(--dark-text); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 32px; }
.footer-brand-logo { height: 42px; width: auto; margin-bottom: 12px; display: block; object-fit: contain; }
.footer-brand-desc { font-size: 12px; color: rgba(255,255,255,0.9); line-height: 1.8; max-width: 260px; }
.footer-col-title { font-size: 12px; font-weight: 600; margin-bottom: 14px; color: var(--dark-text); }
.footer-col-links { display: flex; flex-direction: column; gap: 8px; }
.footer-col-links a { font-size: 12px; color: rgba(255,255,255,0.9); transition: color 0.2s; }
.footer-col-links a:hover { color: var(--orange); }
.footer-bottom {
  padding-top: 18px; border-top: 1px solid var(--dark-border);
  display: flex; justify-content: space-between; align-items: center;
  font-size: 11px; color: var(--dark-text-2);
}

/* ===== Scroll reveal ===== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ===== 导航下拉菜单 ===== */
.nav-item { position: relative; }
.nav-item > a { display: flex; align-items: center; gap: 4px; }
.nav-item > a::after { display: none; }
.nav-dropdown {
  position: absolute; top: 100%; left: 50%; transform: translateX(-50%);
  min-width: 160px; background: #fff; border-radius: 4px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
  padding: 8px 0; opacity: 0; visibility: hidden;
  transition: all 0.25s ease; z-index: 1001;
  border: 1px solid var(--light-border);
}
.nav-item:hover .nav-dropdown { opacity: 1; visibility: visible; top: calc(100% + 8px); }
.nav-dropdown a {
  display: block; padding: 10px 20px; font-size: 13px;
  color: var(--light-text-2) !important; transition: all 0.2s;
  white-space: nowrap;
}
.nav-dropdown a:hover { background: var(--orange-dim); color: var(--orange) !important; padding-left: 24px; }
.nav-dropdown a::after { display: none !important; }
.nav-links a.active { color: var(--orange) !important; }
.nav-links a.active::after { width: 100%; }

/* ===== 内页Banner ===== */
.page-banner {
  height: 320px; background: var(--dark-bg); position: relative;
  display: flex; align-items: center; overflow: hidden;
}
.page-banner-bg {
  position: absolute; inset: 0; background-size: cover; background-position: center;
}
.page-banner-bg::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(22,20,16,0.92) 0%, rgba(22,20,16,0.6) 100%);
}
.page-banner-content { position: relative; z-index: 2; }
.page-banner-title {
  font-size: 36px; font-weight: 700; color: var(--dark-text); margin-bottom: 8px;
}
.page-banner-subtitle { font-size: 15px; color: rgba(255,255,255,0.92); }
.page-breadcrumb {
  position: absolute; bottom: 24px; right: 32px; z-index: 2;
  font-size: 12px; color: rgba(255,255,255,0.9);
}
.page-breadcrumb a { color: rgba(255,255,255,0.85); }
.page-breadcrumb a:hover { color: var(--orange); }
.page-breadcrumb .current { color: var(--orange); }

/* ===== 内页内容区 ===== */
.page-content { padding: 60px 0; }
.page-content.bg-white { background: #fff; }
.content-block { margin-bottom: 48px; }
.content-block:last-child { margin-bottom: 0; }
.content-title {
  font-size: 24px; font-weight: 700; margin-bottom: 16px;
  padding-left: 12px; border-left: 4px solid var(--orange);
  color: var(--light-text);
}
.content-text { font-size: 15px; color: var(--light-text-2); line-height: 1.9; margin-bottom: 16px; }
.content-text strong { color: var(--light-text); }

/* 组织架构图 */
.org-chart { text-align: center; padding: 30px 0; }
.org-level { display: flex; justify-content: center; gap: 20px; margin-bottom: 24px; flex-wrap: wrap; }
.org-node {
  min-width: 140px; padding: 14px 20px; background: #fff;
  border: 2px solid var(--orange); border-radius: 8px;
  font-size: 14px; font-weight: 600; color: var(--light-text);
  position: relative; transition: all 0.3s;
}
.org-node:hover { transform: translateY(-2px); box-shadow: 0 6px 16px rgba(0,0,0,0.08); }
.org-node.top { 
  background: linear-gradient(135deg, var(--orange), #ff8c42); 
  color: #fff; border-color: var(--orange);
  min-width: 180px; padding: 18px 28px; font-size: 16px;
  box-shadow: 0 6px 20px rgba(255,107,53,0.3);
}
.org-node.vp { 
  background: #fff; border-color: var(--orange); 
  color: var(--orange); font-size: 14px;
  min-width: 130px;
}
.org-node.dept { 
  border-color: var(--light-border); font-size: 13px; font-weight: 500;
  min-width: 110px; padding: 12px 16px;
  background: var(--light-bg);
}
.org-node.dept:hover { border-color: var(--orange); background: #fff; }
.org-connector {
  width: 2px; height: 24px; background: var(--light-border); margin: 0 auto;
}
.org-connector-h {
  height: 2px; background: var(--light-border); margin: 0 auto;
}

/* 组织架构分组 */
.org-groups {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 20px;
}
.org-group {
  background: var(--light-bg);
  border-radius: 10px;
  padding: 20px 16px;
  border-top: 3px solid var(--orange);
}
.org-group-title {
  font-size: 14px; font-weight: 700; color: var(--orange);
  margin-bottom: 14px; text-align: center;
  padding-bottom: 10px; border-bottom: 1px dashed var(--light-border);
}
.org-group-depts {
  display: flex; flex-direction: column; gap: 8px;
}
.org-group-dept {
  background: #fff; border: 1px solid var(--light-border);
  border-radius: 6px; padding: 10px 12px;
  font-size: 13px; font-weight: 500; color: var(--light-text);
  text-align: center; transition: all 0.25s;
}
.org-group-dept:hover {
  border-color: var(--orange); color: var(--orange);
  transform: translateX(3px);
}

@media (max-width: 1024px) {
  .org-groups { grid-template-columns: repeat(2, 1fr); }
}

/* 数据卡片 */
.data-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin: 24px 0; }
.data-card {
  text-align: center; padding: 28px 16px; background: #fff;
  border: 1px solid var(--light-border); border-radius: 4px;
  transition: all 0.3s;
}
.data-card:hover { border-color: var(--orange); transform: translateY(-3px); box-shadow: 0 8px 20px rgba(0,0,0,0.06); }
.data-card-num { font-size: 32px; font-weight: 700; color: var(--orange); margin-bottom: 6px; }
.data-card-num .unit { font-size: 14px; color: var(--light-text-3); font-weight: 400; }
.data-card-label { font-size: 13px; color: var(--light-text-2); }

/* 时间线 */
.timeline { position: relative; padding-left: 32px; margin: 24px 0; }
.timeline::before {
  content: ''; position: absolute; left: 8px; top: 0; bottom: 0;
  width: 2px; background: var(--light-border);
}
.timeline-item { position: relative; margin-bottom: 24px; }
.timeline-item::before {
  content: ''; position: absolute; left: -28px; top: 6px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--orange); border: 2px solid #fff;
}
.timeline-year { font-size: 16px; font-weight: 700; color: var(--orange); margin-bottom: 4px; }
.timeline-text { font-size: 14px; color: var(--light-text-2); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero-title { font-size: 36px; }
  .section-title { font-size: 28px; }
  .cap-grid { grid-template-columns: repeat(2, 1fr); }
  .factory-grid { grid-template-columns: 1fr; gap: 32px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .quality-stats { grid-template-columns: repeat(2, 1fr); }
  .digital-grid { grid-template-columns: 1fr; gap: 28px; }
  .digital-cards { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; }
}
@media (max-width: 640px) {
  .container { padding: 0 20px; }
  .section { padding: 52px 0; }
  .hero-title { font-size: 26px; }
  .hero-subtitle { font-size: 14px; }
  .section-title { font-size: 22px; }
  .cap-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .quality-stats { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 6px; text-align: center; }
  .hero-ctas { flex-direction: column; }
  .factory-stats-bar { grid-template-columns: 1fr; }
  .factory-stat-item { border-right: none; border-bottom: 1px solid var(--light-border); }
  .factory-stat-item:last-child { border-bottom: none; }
}

/* ===== 右侧悬浮联系栏 ===== */
.float-contact {
  position: fixed; right: 16px; top: 50%; transform: translateY(-50%);
  z-index: 999; display: flex; flex-direction: column; gap: 2px;
}
.float-btn {
  width: 64px; background: #fff; border: none; cursor: pointer;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 10px 4px; gap: 4px; transition: all 0.3s;
  box-shadow: 0 2px 12px rgba(0,0,0,0.1); position: relative;
}
.float-btn:first-child { border-radius: 6px 6px 0 0; }
.float-btn:last-child { border-radius: 0 0 6px 6px; }
.float-btn:hover { background: var(--orange); }
.float-btn:hover .float-icon, .float-btn:hover .float-text { color: #fff; }
.float-btn:hover .float-icon { stroke: #fff; }
.float-icon {
  width: 24px; height: 24px; stroke: var(--orange); fill: none;
  stroke-width: 1.6; transition: color 0.3s;
}
.float-text { font-size: 11px; color: var(--light-text-2); font-weight: 500; transition: color 0.3s; }

/* 弹出层 */
.float-popup {
  position: absolute; right: 76px; top: 50%; transform: translateY(-50%);
  background: #fff; border-radius: 8px; box-shadow: 0 4px 24px rgba(0,0,0,0.15);
  padding: 20px; display: none; white-space: nowrap; z-index: 1000;
}
.float-popup.show { display: block; }
.float-popup::after {
  content: ''; position: absolute; right: -8px; top: 50%; transform: translateY(-50%);
  border: 8px solid transparent; border-left-color: #fff;
}
.float-popup-title { font-size: 14px; font-weight: 600; color: var(--light-text); margin-bottom: 8px; }
.float-popup-phone { font-size: 22px; font-weight: 700; color: var(--orange); }
.float-popup-desc { font-size: 12px; color: var(--light-text-3); margin-top: 4px; }
.float-qrcode {
  width: 140px; height: 140px; background: var(--light-bg);
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--light-border); border-radius: 4px; margin: 0 auto;
}
.float-qrcode svg { width: 100px; height: 100px; stroke: var(--light-text); fill: none; stroke-width: 1; opacity: 0.3; }
.float-qrcode-tip { font-size: 12px; color: var(--light-text-2); text-align: center; margin-top: 8px; }

/* 返回顶部按钮滚动显示 */
.float-btn.top-btn { opacity: 0; pointer-events: none; transition: all 0.3s; }
.float-btn.top-btn.visible { opacity: 1; pointer-events: auto; }

@media (max-width: 768px) {
  .float-contact { right: 8px; }
  .float-btn { width: 52px; padding: 8px 2px; }
  .float-icon { width: 20px; height: 20px; }
  .float-text { font-size: 10px; }
  .float-popup { right: 64px; padding: 14px; }
  .float-popup-phone { font-size: 18px; }
}

/* ===== 走进臻品 - 美化版 ===== */

/* 企业概况 - 精美图文布局 */
.about-hero-v2 {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 56px;
}
.about-hero-text .section-label { margin-bottom: 12px; }
.about-hero-text h2 {
  font-size: 32px; font-weight: 700; line-height: 1.35;
  margin-bottom: 20px; color: var(--light-text);
}
.about-hero-text h2 .highlight { color: var(--orange); }
.about-hero-text p {
  font-size: 15px; color: var(--light-text-2); line-height: 1.95;
  margin-bottom: 14px;
}
.about-hero-features {
  display: grid; grid-template-columns: 1fr 1fr; gap: 14px;
  margin-top: 24px;
}
.about-feature-item {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 16px; background: var(--light-bg);
  border-radius: 8px; border-left: 3px solid var(--orange);
}
.about-feature-icon {
  width: 28px; height: 28px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
}
.about-feature-icon svg { width: 24px; height: 24px; stroke: var(--orange); fill: none; stroke-width: 1.8; }
.about-feature-text { font-size: 13px; font-weight: 600; color: var(--light-text); }

.about-hero-img {
  position: relative; border-radius: 12px; overflow: hidden;
  box-shadow: 0 20px 50px rgba(0,0,0,0.12);
}
.about-hero-img img { width: 100%; height: 420px; object-fit: cover; display: block; }
.about-hero-img::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,107,53,0.15) 0%, transparent 60%);
  pointer-events: none;
}
.about-hero-badge {
  position: absolute; bottom: 24px; left: 24px;
  background: rgba(255,255,255,0.95); backdrop-filter: blur(10px);
  padding: 16px 24px; border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}
.about-hero-badge-num { font-size: 28px; font-weight: 800; color: var(--orange); line-height: 1; }
.about-hero-badge-num .unit { font-size: 14px; font-weight: 500; color: var(--light-text-3); }
.about-hero-badge-label { font-size: 12px; color: var(--light-text-2); margin-top: 4px; }

/* 数据统计 - 精美卡片 */
.about-stats-v2 {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px;
}
.about-stat-v2 {
  text-align: center; padding: 32px 16px 28px;
  background: #fff; border-radius: 12px;
  border: 1px solid var(--light-border);
  position: relative; overflow: hidden;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.about-stat-v2::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 3px; background: linear-gradient(90deg, var(--orange), #ffb347);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.35s;
}
.about-stat-v2:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(255,107,53,0.12);
  border-color: rgba(255,107,53,0.3);
}
.about-stat-v2:hover::before { transform: scaleX(1); }
.about-stat-v2-num {
  font-size: 38px; font-weight: 800; color: var(--orange);
  line-height: 1; margin-bottom: 8px;
  background: linear-gradient(135deg, var(--orange), #ff8c42);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.about-stat-v2-num .unit { font-size: 16px; font-weight: 600; -webkit-text-fill-color: var(--light-text-3); }
.about-stat-v2-label { font-size: 13px; color: var(--light-text-2); font-weight: 500; }

/* 发展历程 - 左右交替时间线 */
.timeline-v2 { position: relative; padding: 20px 0; }
.timeline-v2::before {
  content: ''; position: absolute; left: 50%; top: 0; bottom: 0;
  width: 3px; background: linear-gradient(180deg, var(--orange), #ffd4b8, var(--orange));
  transform: translateX(-50%); border-radius: 2px;
}
.timeline-v2-item {
  position: relative; width: 50%; padding: 0 40px 40px;
  box-sizing: border-box;
}
.timeline-v2-item:nth-child(odd) { left: 0; text-align: right; }
.timeline-v2-item:nth-child(even) { left: 50%; text-align: left; }
.timeline-v2-dot {
  position: absolute; top: 8px; width: 18px; height: 18px;
  border-radius: 50%; background: #fff;
  border: 4px solid var(--orange);
  box-shadow: 0 0 0 4px rgba(255,107,53,0.15);
  z-index: 2;
}
.timeline-v2-item:nth-child(odd) .timeline-v2-dot { right: -9px; }
.timeline-v2-item:nth-child(even) .timeline-v2-dot { left: -9px; }
.timeline-v2-card {
  background: #fff; border-radius: 12px; padding: 24px 28px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  border: 1px solid var(--light-border);
  transition: all 0.3s;
  display: inline-block; text-align: left; max-width: 100%;
}
.timeline-v2-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(255,107,53,0.1);
  border-color: rgba(255,107,53,0.25);
}
.timeline-v2-year {
  font-size: 22px; font-weight: 800; color: var(--orange);
  margin-bottom: 8px; display: flex; align-items: center; gap: 8px;
}
.timeline-v2-year::before {
  content: ''; width: 4px; height: 20px;
  background: var(--orange); border-radius: 2px;
}
.timeline-v2-title { font-size: 16px; font-weight: 700; color: var(--light-text); margin-bottom: 6px; }
.timeline-v2-desc { font-size: 13px; color: var(--light-text-2); line-height: 1.7; }

/* 荣誉资质 - 精美卡片 */
.honor-grid-v2 {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.honor-card-v2 {
  display: flex; align-items: center; gap: 18px;
  padding: 24px; background: #fff; border-radius: 12px;
  border: 1px solid var(--light-border);
  transition: all 0.35s; position: relative; overflow: hidden;
}
.honor-card-v2::after {
  content: ''; position: absolute; right: -20px; top: -20px;
  width: 80px; height: 80px; border-radius: 50%;
  background: rgba(255,107,53,0.06); transition: all 0.35s;
}
.honor-card-v2:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.08);
  border-color: rgba(255,107,53,0.3);
}
.honor-card-v2:hover::after {
  background: rgba(255,107,53,0.12); transform: scale(1.3);
}
.honor-icon-v2 {
  width: 56px; height: 56px; flex-shrink: 0;
  border-radius: 12px; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(255,107,53,0.1), rgba(255,107,53,0.05));
}
.honor-icon-v2 svg { width: 30px; height: 30px; stroke: var(--orange); fill: none; stroke-width: 1.6; }
.honor-text-v2 { flex: 1; position: relative; z-index: 1; }
.honor-title-v2 { font-size: 17px; font-weight: 700; color: var(--light-text); margin-bottom: 4px; }
.honor-desc-v2 { font-size: 13px; color: var(--light-text-2); }

/* 组织架构 - 精美版 */
.org-section-v2 { margin-bottom: 48px; }
.org-chart-v2 { text-align: center; padding: 20px 0; }
.org-level-v2 { display: flex; justify-content: center; gap: 24px; margin-bottom: 0; flex-wrap: wrap; }
.org-node-v2 {
  min-width: 150px; padding: 16px 24px; background: #fff;
  border-radius: 10px; font-size: 14px; font-weight: 600;
  color: var(--light-text); position: relative;
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
  border: 1px solid var(--light-border);
  transition: all 0.3s;
}
.org-node-v2:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(255,107,53,0.12);
  border-color: rgba(255,107,53,0.3);
}
.org-node-v2.org-ceo-v2 {
  background: linear-gradient(135deg, var(--orange), #ff8c42);
  color: #fff; border: none; min-width: 200px; padding: 24px 40px;
  box-shadow: 0 8px 24px rgba(255,107,53,0.3);
}
.org-node-v2.org-ceo-v2 .org-node-title-v2 { font-size: 22px; opacity: 1; font-weight: 700; margin-bottom: 0; }
.org-node-title-v2 { font-size: 12px; opacity: 0.85; font-weight: 500; margin-bottom: 2px; }
.org-node-name-v2 { font-size: 15px; font-weight: 700; }
.org-node-v2.org-small-v2 {
  min-width: 110px; padding: 12px 16px; font-size: 13px;
  background: var(--light-bg); border: 1px solid var(--light-border);
  box-shadow: none;
}
.org-connector-v2 {
  width: 2px; height: 28px;
  background: linear-gradient(180deg, var(--light-border), #e0e0e0);
  margin: 0 auto; position: relative;
}
.org-connector-v2::before {
  content: ''; position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--orange); border: 2px solid #fff;
}

/* 部门职责 - 精美卡片 */
.dept-grid-v2 {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px;
}
.dept-card-v2 {
  padding: 20px 18px; background: #fff; border-radius: 10px;
  border: 1px solid var(--light-border); transition: all 0.3s;
  position: relative; overflow: hidden;
}
.dept-card-v2::before {
  content: ''; position: absolute; top: 0; left: 0;
  width: 3px; height: 0; background: var(--orange);
  transition: height 0.3s;
}
.dept-card-v2:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 28px rgba(0,0,0,0.08);
  border-color: rgba(255,107,53,0.25);
}
.dept-card-v2:hover::before { height: 100%; }
.dept-icon-v2 {
  width: 40px; height: 40px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(255,107,53,0.1), rgba(255,107,53,0.05));
  margin-bottom: 12px;
}
.dept-icon-v2 svg { width: 22px; height: 22px; stroke: var(--orange); fill: none; stroke-width: 1.8; }
.dept-title-v2 { font-size: 15px; font-weight: 700; color: var(--light-text); margin-bottom: 6px; }
.dept-desc-v2 { font-size: 12px; color: var(--light-text-2); line-height: 1.7; }

/* 响应式 */
@media (max-width: 1024px) {
  .about-hero-v2 { grid-template-columns: 1fr; gap: 32px; }
  .about-hero-img img { height: 320px; }
  .about-stats-v2 { grid-template-columns: repeat(3, 1fr); }
  .honor-grid-v2 { grid-template-columns: repeat(2, 1fr); }
  .dept-grid-v2 { grid-template-columns: repeat(3, 1fr); }
  .timeline-v2::before { left: 20px; }
  .timeline-v2-item { width: 100%; left: 0 !important; text-align: left !important; padding: 0 0 32px 50px; }
  .timeline-v2-item .timeline-v2-dot { left: 11px !important; right: auto !important; }
}
@media (max-width: 640px) {
  .about-hero-text h2 { font-size: 24px; }
  .about-hero-features { grid-template-columns: 1fr; }
  .about-stats-v2 { grid-template-columns: repeat(2, 1fr); }
  .honor-grid-v2 { grid-template-columns: 1fr; }
  .dept-grid-v2 { grid-template-columns: repeat(2, 1fr); }
  .about-stat-v2-num { font-size: 30px; }
}

/* ===== 数字化管理 - 系统截图展示 ===== */
.digital-screenshot-card {
  background: #fff;
  border: 1px solid var(--dark-border);
  border-radius: 6px;
  overflow: hidden;
  transition: all 0.35s;
}
.digital-screenshot-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
  border-color: rgba(212, 130, 42, 0.4);
}
.digital-screenshot-img {
  position: relative;
  overflow: hidden;
  background: #f0f0f0;
}
.digital-screenshot-placeholder {
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, #f8f8f8 0%, #eee 100%);
  display: flex;
  flex-direction: column;
}
.digital-screenshot-browser {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: #e8e8e8;
  border-bottom: 1px solid #ddd;
}
.digital-screenshot-dots {
  display: flex;
  gap: 5px;
}
.digital-screenshot-dots span {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: #555;
}
.digital-screenshot-dots span:first-child { background: #ff5f57; }
.digital-screenshot-dots span:nth-child(2) { background: #febc2e; }
.digital-screenshot-dots span:nth-child(3) { background: #28c840; }
.digital-screenshot-url {
  flex: 1;
  font-size: 11px;
  color: #666;
  background: #fff;
  padding: 3px 10px;
  border-radius: 3px;
  text-align: center;
}
.digital-screenshot-mock {
  flex: 1;
  padding: 12px;
  overflow: hidden;
}
.mock-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}
.mock-logo {`n  color: #666E21;
}
.mock-nav {
  display: flex;
  gap: 10px;
}
.mock-nav span {
  font-size: 10px;
  color: #666;
  padding: 2px 6px;
  background: rgba(0,0,0,0.05);
  border-radius: 2px;
}
.mock-body {
  background: #f8f8f8;
  border-radius: 4px;
  padding: 10px;
  height: calc(100% - 30px);
}

/* AI报价模拟界面 */
.mock-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-bottom: 8px;
}
.mock-form-row {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.mock-label {
  font-size: 9px;
  color: #888;
}
.mock-input {
  font-size: 10px;
  color: #333;
  background: #e8e8e8;
  padding: 4px 6px;
  border-radius: 2px;
}
.mock-result {
  background: linear-gradient(135deg, rgba(212,130,42,0.15) 0%, rgba(212,130,42,0.05) 100%);
  border: 1px solid rgba(212,130,42,0.3);
  border-radius: 4px;
  padding: 8px;
}
.mock-result-title {`n  color: #666E21;
  margin-bottom: 6px;
}
.mock-result-row {
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  color: #666;
  margin-bottom: 3px;
}
.mock-price {
  color: #333;
  font-weight: 600;
}
.mock-result-total {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: #333;
  font-weight: 700;
  padding-top: 5px;
  margin-top: 5px;
  border-top: 1px solid rgba(0,0,0,0.1);
}
.mock-total {
  color: var(--orange);
}
.mock-btn {
  margin-top: 8px;
  text-align: center;
  font-size: 10px;
  color: #333;
  background: var(--orange);
  padding: 5px;
  border-radius: 3px;
  font-weight: 600;
}

/* 模具进度模拟界面 */
.mock-progress-card {
  height: 100%;
}
.mock-progress-title {
  font-size: 11px;
  font-weight: 600;
  color: #333;
  margin-bottom: 3px;
}
.mock-progress-sub {
  font-size: 9px;
  color: #888;
  margin-bottom: 10px;
}
.mock-timeline {
  display: flex;
  justify-content: space-between;
  position: relative;
  margin-bottom: 12px;
}
.mock-timeline::before {
  content: '';
  position: absolute;
  top: 5px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: #e0e0e0;
}
.mock-timeline-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  z-index: 1;
}
.mock-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #e0e0e0;
  border: 2px solid #ccc;
  margin-bottom: 4px;
}
.mock-timeline-item.done .mock-dot {
  background: var(--orange);
  border-color: var(--orange);
}
.mock-timeline-item.active .mock-dot {
  background: var(--orange);
  border-color: var(--orange);
  box-shadow: 0 0 8px rgba(212,130,42,0.5);
}
.mock-tl-text {
  font-size: 8px;
  color: #888;
  white-space: nowrap;
}
.mock-timeline-item.done .mock-tl-text {`n  color: #666E21; }
.mock-timeline-item.active .mock-tl-text { color: var(--orange); }
.mock-tl-date {
  font-size: 7px;
  color: #aaa;
  margin-top: 2px;
}
.mock-progress-bar {
  height: 6px;
  background: #e0e0e0;
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 6px;
}
.mock-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #666E21, #D37C1B);
  border-radius: 3px;
}
.mock-progress-text {
  font-size: 9px;
  color: #666;
  text-align: center;
}

/* 黑湖MES模拟界面 */
.mock-dashboard {
  height: 100%;
}
.mock-stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  margin-bottom: 8px;
}
.mock-stat {
  background: #e8e8e8;
  border-radius: 3px;
  padding: 6px 4px;
  text-align: center;
}
.mock-stat-num {
  font-size: 14px;
  font-weight: 700;
  color: var(--orange);
}
.mock-stat-label {
  font-size: 8px;
  color: #888;
  margin-top: 2px;
}
.mock-chart {
  background: #e8e8e8;
  border-radius: 3px;
  padding: 8px;
  margin-bottom: 8px;
}
.mock-chart-title {
  font-size: 9px;
  color: #666;
  margin-bottom: 6px;
}
.mock-bars {
  display: flex;
  align-items: flex-end;
  justify-content: space-around;
  height: 50px;
  gap: 8px;
}
.mock-bar {
  flex: 1;
  background: linear-gradient(180deg, var(--orange), rgba(212,130,42,0.3));
  border-radius: 2px 2px 0 0;
  position: relative;
  min-height: 10px;
}
.mock-bar span {
  position: absolute;
  bottom: -14px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 8px;
  color: #888;
  white-space: nowrap;
}
.mock-workorder {
  background: #e8e8e8;
  border-radius: 3px;
  padding: 6px;
}
.mock-wo-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 0;
  border-bottom: 1px solid #eee;
}
.mock-wo-row:last-child { border-bottom: none; }
.mock-wo-no {
  font-size: 9px;
  color: #666;
}
.mock-wo-status {
  font-size: 8px;
  padding: 2px 6px;
  border-radius: 2px;
}
.mock-wo-status.doing { background: rgba(212,130,42,0.2); color: var(--orange); }
.mock-wo-status.done {`n  background: rgba(102,110,33,0.15);`n  color: #666E21; }
.mock-wo-status.wait { background: rgba(0,0,0,0.1); color: #666; }

.digital-screenshot-info {
  padding: 18px 20px;
}
.digital-screenshot-info h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--light-text);
  margin-bottom: 8px;
}
.digital-screenshot-info p {
  font-size: 12px;
  color: var(--light-text-2);
  line-height: 1.8;
  margin-bottom: 12px;
}
.digital-screenshot-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  font-weight: 600;
  color: var(--orange);
  text-decoration: none;
  transition: gap 0.2s;
}
.digital-screenshot-link:hover {
  gap: 8px;
}

@media (max-width: 900px) {
  .digital-screenshot-card {
    grid-template-columns: 1fr;
  }
}

/* ===== 工序流程图 ===== */
.process-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0;
  margin: 40px 0;
  padding: 30px 20px;
  background: linear-gradient(135deg, #faf8f5 0%, #f5f2ed 100%);
  border-radius: 12px;
}

.process-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  min-width: 120px;
  padding: 0 10px;
}

.process-step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, #D4822A 0%, #E89B3C 100%);
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  box-shadow: 0 4px 12px rgba(212, 130, 42, 0.3);
}

.process-step-name {
  font-size: 15px;
  font-weight: 600;
  color: #333;
  margin-bottom: 6px;
}

.process-step-desc {
  font-size: 12px;
  color: #888;
}

.process-arrow {
  color: #4A5A18;
  font-size: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 50px;
  padding: 0 5px;
}

.process-arrow svg {
  width: 36px;
  height: 28px;
}

@media (max-width: 900px) {
  .process-flow {
    flex-direction: column;
    gap: 15px;
  }
  .process-arrow {
    transform: rotate(90deg);
    min-width: auto;
    padding: 5px 0;
  }
}

/* ===== 数字化工具卡片（带hover效果） ===== */
.digital-tool-card {
  background: #fff;
  border: 2px solid #e8e8e8;
  border-radius: 12px;
  padding: 32px 24px;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
.digital-tool-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, #666E21, #D4822A);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.digital-tool-card:hover {
  border-color: #D4822A;
  transform: translateY(-12px);
  box-shadow: 0 16px 40px rgba(212,130,42,0.2), 0 4px 12px rgba(0,0,0,0.08);
  background: linear-gradient(180deg, #fff 0%, #fffaf5 100%);
}
.digital-tool-card:hover::before {
  transform: scaleX(1);
}
.digital-tool-card:hover .digital-tool-icon {
  background: linear-gradient(135deg, #D4822A, #ff8c42);
  transform: scale(1.1) translateY(-4px);
  box-shadow: 0 8px 20px rgba(212,130,42,0.4);
}
.digital-tool-card:hover .digital-tool-icon svg {
  stroke: #fff;
}
.digital-tool-card:hover .digital-tool-title {
  color: #D4822A;
}
.digital-tool-card:hover .digital-tool-click {
  opacity: 1;
  transform: translateY(0);
  background: #D4822A;
  color: #fff;
}
.digital-tool-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(102,110,33,0.12), rgba(102,110,33,0.05));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.digital-tool-icon svg {
  transition: all 0.35s ease;
}
.digital-tool-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  color: #333;
  transition: color 0.3s ease;
}
.digital-tool-desc {
  font-size: 13px;
  color: #888;
  line-height: 1.8;
  margin-bottom: 16px;
  transition: color 0.3s ease;
}
.digital-tool-card:hover .digital-tool-desc {
  color: #555;
}
.digital-tool-stats {
  padding-top: 14px;
  border-top: 1px solid #eee;
  margin-bottom: 14px;
}
.digital-tool-stat {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  margin-bottom: 8px;
}
.digital-tool-stat:last-child {
  margin-bottom: 0;
}
.digital-tool-stat span:first-child {
  color: #999;
}
.digital-tool-stat .val {
  color: #D4822A;
  font-weight: 600;
}
.digital-tool-click {
  display: inline-block;
  padding: 8px 16px;
  background: #f5f5f5;
  border-radius: 6px;
  font-size: 12px;
  color: #999;
  font-weight: 600;
  opacity: 0.7;
  transform: translateY(4px);
  transition: all 0.35s ease;
}

@media (max-width: 1024px) {
  .digital-tool-card {
    padding: 24px 18px;
  }
}

/* ===== 资质认证卡片 ===== */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
  margin-top: 36px;
}
.cert-card {
  background: #fff;
  border: 1px solid #e8e8e8;
  border-radius: 12px;
  padding: 28px 16px;
  text-align: center;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: default;
}
.cert-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 32px rgba(212,130,42,0.15);
  border-color: rgba(212,130,42,0.3);
}
.cert-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(212,130,42,0.12), rgba(102,110,33,0.08));
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.35s ease;
}
.cert-card:hover .cert-icon {
  background: linear-gradient(135deg, #D4822A, #666E21);
  transform: scale(1.1);
}
.cert-icon svg {
  width: 28px;
  height: 28px;
  stroke: #D4822A;
  fill: none;
  stroke-width: 1.6;
  transition: all 0.35s ease;
}
.cert-card:hover .cert-icon svg {
  stroke: #fff;
}
.cert-title {
  font-size: 15px;
  font-weight: 700;
  color: #333;
  margin-bottom: 6px;
  transition: color 0.3s ease;
}
.cert-card:hover .cert-title {
  color: #D4822A;
}
.cert-desc {
  font-size: 12px;
  color: #999;
  line-height: 1.5;
}

@media (max-width: 1024px) {
  .cert-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (max-width: 640px) {
  .cert-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ===== 移动端导航（汉堡菜单 + 底部导航栏） ===== */
@media (max-width: 1024px) {
  .nav-cta { display: none; }
  .m-hamburger {
    display: flex; flex-direction: column; justify-content: center; gap: 5px;
    width: 40px; height: 40px; background: transparent; border: none;
    cursor: pointer; z-index: 10001; padding: 9px; flex-shrink: 0;
  }
  .m-hamburger span {
    display: block; height: 2.5px; width: 100%;
    background: var(--orange); border-radius: 2px;
    transition: all 0.3s ease;
  }
  .m-hamburger.open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
  .m-hamburger.open span:nth-child(2) { opacity: 0; }
  .m-hamburger.open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

  .m-menu {
    position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(255,255,255,0.98);
    z-index: 10000;
    display: flex; flex-direction: column;
    padding: 96px 32px 60px; overflow-y: auto;
    opacity: 0; visibility: hidden; transform: translateY(-16px);
    transition: all 0.3s ease;
  }
  .m-menu.open { opacity: 1; visibility: visible; transform: translateY(0); }
  .m-menu a {
    font-size: 17px; color: var(--light-text); font-weight: 600;
    padding: 15px 4px; border-bottom: 1px solid var(--light-border);
    text-decoration: none; display: block;
  }
  .m-menu a.active { color: var(--orange); }
  .m-menu a:active { color: var(--orange); }
  .m-menu-cta {
    margin-top: 26px; text-align: center; color: #fff !important;
    background: var(--orange); border-radius: 8px;
    border-bottom: none !important; padding: 14px !important;
  }

  .m-tabbar {
    position: fixed; left: 0; right: 0; bottom: 0; height: 58px;
    background: #fff; border-top: 1px solid #eee;
    display: flex; z-index: 9999;
    box-shadow: 0 -2px 12px rgba(0,0,0,0.06);
    padding-bottom: env(safe-area-inset-bottom);
  }
  .m-tab {
    flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 3px; color: #8B8778; font-size: 11px; text-decoration: none;
    background: #fff; border: none; padding: 4px 0;
  }
  .m-tab svg { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 1.7; }
  .m-tab.active { color: var(--orange); }
  body { padding-bottom: 58px; }
}

/* 菜单展开时，顶部导航（含汉堡按钮）提升到菜单之上，保证可点击关闭 */
body.m-nav-open .nav { z-index: 10002; }
/* 菜单内右上角关闭按钮 */
.m-menu-close {
  position: absolute; top: 16px; right: 20px;
  width: 38px; height: 38px; border-radius: 50%;
  background: var(--orange); color: #fff; border: none;
  font-size: 17px; font-weight: 700; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 12px rgba(255,107,53,0.35);
  transition: all 0.25s;
}
.m-menu-close:active { transform: rotate(90deg); }
/* 展开时汉堡按钮背景高亮，叉叉更醒目 */
.m-hamburger.open { background: rgba(255,107,53,0.12); border-radius: 8px; }