/* ==========================================================================
   浙宝电气（hdk.com.cn）官方 VIS 品牌定制样式表 v4.5 (极简工业工程质感)
   标准 VIS 配色：浙宝工业蓝 (#005BAC) + HDK 动力红 (#E50012)
   深度优化：关于浙宝与企业荣誉整合模块、排版精细化、导航清晰化
   ========================================================================== */

:root {
  /* 官方 VIS 核心色彩规范 */
  --brand-blue: #005BAC;        /* 浙宝标准蓝 */
  --brand-blue-dark: #004280;   /* 深蓝 */
  --brand-blue-light: #1A75D2;  /* 明蓝 */
  --brand-red: #E50012;         /* HDK 标志红 */
  --brand-red-light: #FF2E44;   /* 活力亮红 */
  --brand-red-dark: #B8000E;    /* 暗红 */

  /* 辅助调色盘 */
  --dark-bg: #071022;
  --dark-surface: #0e1933;
  --dark-surface-2: #142347;
  --text-dark: #1e293b;
  --text-muted: #64748b;
  --text-light: #f8fafc;
  --text-light-muted: #94a3b8;
  --border-light: #e2e8f0;
  --border-dark: rgba(255, 255, 255, 0.1);
  --card-bg: #ffffff;
  --card-shadow: 0 10px 30px -5px rgba(0, 91, 172, 0.08), 0 4px 12px -2px rgba(0, 0, 0, 0.04);
  --card-shadow-hover: 0 20px 40px -10px rgba(0, 91, 172, 0.18), 0 8px 16px -4px rgba(229, 0, 18, 0.12);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --header-height: 80px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
  color: var(--text-dark);
  background-color: #f8fafc;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

ul {
  list-style: none;
}

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

.container {
  width: 100%;
  max-width: 1360px;
  margin: 0 auto;
  padding: 0 28px;
}

/* ================= 通用 SVG 图标样式 ================= */
.svg-icon {
  width: 1.15em;
  height: 1.15em;
  fill: currentColor;
  display: inline-block;
  vertical-align: -0.18em;
  flex-shrink: 0;
}

/* ================= 官方品牌导航栏 ================= */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 1000;
  border-bottom: 1px solid var(--border-light);
  box-shadow: 0 4px 20px rgba(0, 40, 90, 0.06);
  transition: var(--transition);
}

.header.scrolled {
  height: 70px;
  box-shadow: 0 6px 24px rgba(0, 40, 90, 0.1);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 24px;
}

.logo-wrap {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.logo-wrap img {
  height: 44px;
  width: auto;
  object-fit: contain;
  transition: var(--transition);
}

.header.scrolled .logo-wrap img {
  height: 38px;
}

/* 导航链接 */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-item {
  position: relative;
}

.nav-link {
  color: #334155;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 10px 4px;
  display: flex;
  align-items: center;
  gap: 4px;
  position: relative;
  transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
  color: var(--brand-blue);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2.5px;
  background: var(--brand-red);
  transition: var(--transition);
  border-radius: 2px;
}

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

.nav-link .arrow {
  font-size: 0.65rem;
  transition: transform 0.2s;
}

.nav-item:hover .nav-link .arrow {
  transform: rotate(180deg);
}

/* 下拉菜单 */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 230px;
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 8px 0;
  box-shadow: 0 16px 36px rgba(0, 40, 90, 0.14);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
}

.nav-item:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: block;
  padding: 10px 20px;
  font-size: 0.88rem;
  font-weight: 500;
  color: #475569;
  transition: var(--transition);
}

.dropdown-item:hover {
  background: rgba(0, 91, 172, 0.08);
  color: var(--brand-blue);
  padding-left: 24px;
  border-left: 3px solid var(--brand-red);
}

/* 右侧快捷动作与热线 */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.phone-link {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-dark);
  font-size: 0.88rem;
  font-weight: 700;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  background: #f1f5f9;
  border: 1px solid var(--border-light);
  transition: var(--transition);
}

.phone-link .svg-icon {
  color: var(--brand-red);
  width: 14px;
  height: 14px;
}

.phone-link:hover {
  background: #e2e8f0;
  border-color: var(--brand-blue);
  color: var(--brand-blue);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 22px;
  border-radius: var(--radius-full);
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-red {
  background: linear-gradient(135deg, var(--brand-red), var(--brand-red-light));
  color: #fff;
  box-shadow: 0 4px 14px rgba(229, 0, 18, 0.35);
}

.btn-red:hover {
  background: linear-gradient(135deg, var(--brand-red-dark), var(--brand-red));
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(229, 0, 18, 0.5);
  color: #fff;
}

.btn-blue {
  background: linear-gradient(135deg, var(--brand-blue), var(--brand-blue-light));
  color: #fff;
  box-shadow: 0 4px 14px rgba(0, 91, 172, 0.35);
}

.btn-blue:hover {
  background: linear-gradient(135deg, var(--brand-blue-dark), var(--brand-blue));
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 91, 172, 0.5);
  color: #fff;
}

.btn-outline-white {
  background: rgba(255, 255, 255, 0.08);
  border: 1.5px solid rgba(255, 255, 255, 0.35);
  color: #fff;
}

.btn-outline-white:hover {
  background: #ffffff;
  color: var(--brand-blue);
  border-color: #ffffff;
}

.btn-outline-blue {
  background: transparent;
  border: 1.5px solid var(--brand-blue);
  color: var(--brand-blue);
}

.btn-outline-blue:hover {
  background: var(--brand-blue);
  color: #fff;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-dark);
  font-size: 1.6rem;
  cursor: pointer;
}

/* ================= 巨幕 Hero 区域 ================= */
.hero {
  position: relative;
  min-height: 90vh;
  padding-top: calc(var(--header-height) + 32px);
  padding-bottom: 60px;
  background: var(--dark-bg);
  color: #fff;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('../assets/images/hero_power_grid.jpg') center center / cover no-repeat;
  opacity: 0.38;
}

.hero-gradient-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 70% 30%, rgba(0, 91, 172, 0.4) 0%, rgba(7, 16, 34, 0.96) 75%);
}

.hero .container {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-content-simple {
  max-width: 920px;
  text-align: center;
  margin: 0 auto;
}

.hero-content-simple .hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 20px;
  background: rgba(229, 0, 18, 0.14);
  border: 1px solid rgba(229, 0, 18, 0.45);
  border-radius: var(--radius-full);
  color: #ff6b7a;
  font-size: 0.9rem;
  font-weight: 700;
  margin: 0 auto 22px auto;
  backdrop-filter: blur(10px);
}

.hero-content-simple .hero-tag .tag-dot {
  width: 7px;
  height: 7px;
  background: var(--brand-red);
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(229, 0, 18, 0.8);
}

.hero-content-simple .hero-title {
  font-size: clamp(2.2rem, 3.8vw, 3.4rem);
  font-weight: 900;
  line-height: 1.22;
  margin-bottom: 18px;
  letter-spacing: -0.5px;
  color: #ffffff;
}

.hero-content-simple .hero-title-sub {
  display: block;
  margin-top: 10px;
  font-size: clamp(1.4rem, 2.3vw, 2.1rem);
  font-weight: 800;
  background: linear-gradient(135deg, #ffffff 0%, #93c5fd 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
}

.hero-content-simple .hero-desc {
  font-size: 1.1rem;
  color: #cbd5e1;
  line-height: 1.7;
  margin: 0 auto 32px auto;
  max-width: 920px;
  text-wrap: balance;
  font-weight: 400;
}

@media (min-width: 860px) {
  .hero-content-simple .hero-desc {
    white-space: nowrap;
  }
}

.hero-content-simple .hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-content-simple .hero-stats {
  margin: 48px auto 0 auto;
  max-width: 680px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.hero-content-simple .stat-item h3 {
  font-size: 2.2rem;
  font-weight: 900;
  color: #60a5fa;
  line-height: 1;
}

.hero-content-simple .stat-item p {
  font-size: 0.86rem;
  color: #94a3b8;
  margin-top: 8px;
  white-space: nowrap;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background: var(--brand-red);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--brand-red);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(229, 0, 18, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(229, 0, 18, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(229, 0, 18, 0); }
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: var(--transition);
}

.feature-item:hover {
  background: rgba(0, 91, 172, 0.2);
  border-color: rgba(0, 91, 172, 0.4);
  transform: translateX(3px);
}

.feature-icon-badge {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(0, 91, 172, 0.25);
  border: 1px solid rgba(0, 91, 172, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #60a5fa;
  flex-shrink: 0;
  transition: var(--transition);
}

.feature-item:hover .feature-icon-badge {
  background: var(--brand-red);
  border-color: var(--brand-red);
  color: #ffffff;
}

.feature-info {
  flex-grow: 1;
}

.feature-info h5 {
  font-size: 0.92rem;
  color: #f1f5f9;
  margin-bottom: 2px;
  font-weight: 700;
}

.feature-info p {
  font-size: 0.78rem;
  color: #94a3b8;
  line-height: 1.45;
}

/* ================= 通用 Section ================= */
.section {
  padding: 72px 0;
}

.section-dark {
  background: var(--dark-bg);
  color: #fff;
}

.section-header {
  text-align: center;
  max-width: 820px;
  margin: 0 auto 44px auto;
}

.section-subtitle {
  color: var(--brand-red);
  font-size: 0.84rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 6px;
  display: inline-block;
}

.section-dark .section-subtitle {
  color: var(--brand-red-light);
}

.section-title {
  font-size: 2.15rem;
  font-weight: 800;
  color: var(--text-dark);
  line-height: 1.3;
  margin-bottom: 12px;
}

.section-dark .section-title {
  color: #fff;
}

.section-desc {
  font-size: 0.98rem;
  color: var(--text-muted);
}

.section-dark .section-desc {
  color: var(--text-light-muted);
}

/* ================= 整合版：走进浙宝与权威资质荣誉 ================= */
.about-unified-container {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.about-main-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  padding: 36px 40px;
  box-shadow: var(--card-shadow);
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 36px;
  align-items: center;
}

.about-main-text h3 {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--brand-blue);
  margin-bottom: 14px;
  line-height: 1.4;
}

.about-main-text p {
  color: #475569;
  font-size: 0.94rem;
  line-height: 1.8;
  margin-bottom: 14px;
}

.about-factory-badge {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
  border: 1px solid var(--border-light);
}

.about-factory-badge img {
  width: 100%;
  height: 250px;
  object-fit: cover;
}

.about-factory-footer {
  background: #071022;
  color: #fff;
  padding: 14px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* 权威资质 4 大背书卡片网格 */
.credentials-pillar-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.credential-pillar-card {
  background: #ffffff;
  border-radius: var(--radius-md);
  padding: 22px 18px;
  border: 1px solid var(--border-light);
  box-shadow: var(--card-shadow);
  transition: var(--transition);
  display: flex;
  align-items: flex-start;
  gap: 14px;
  border-top: 3.5px solid var(--brand-blue);
}

.credential-pillar-card:hover {
  border-top-color: var(--brand-red);
  transform: translateY(-4px);
  box-shadow: var(--card-shadow-hover);
}

.credential-pillar-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: rgba(0, 91, 172, 0.08);
  color: var(--brand-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition);
}

.credential-pillar-card:hover .credential-pillar-icon {
  background: var(--brand-red);
  color: #ffffff;
}

.credential-pillar-info h5 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 4px;
  line-height: 1.35;
}

.credential-pillar-info p {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.45;
}

/* 企业价值观横幅 */
.values-strip-bar {
  background: linear-gradient(135deg, #071022, #0e1933);
  border-radius: var(--radius-md);
  padding: 18px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #fff;
  flex-wrap: wrap;
  gap: 16px;
  border: 1px solid rgba(0, 91, 172, 0.3);
}

.values-strip-left {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.values-pill {
  background: rgba(229, 0, 18, 0.2);
  border: 1px solid var(--brand-red);
  color: #ff6b7a;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  font-size: 0.84rem;
  font-weight: 800;
}

.values-text {
  font-size: 0.92rem;
  color: #e2e8f0;
}

/* ================= 4大产业矩阵 ================= */
.industry-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.industry-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 28px 22px;
  border: 1px solid var(--border-light);
  box-shadow: var(--card-shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-top: 4px solid var(--brand-blue);
}

.industry-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--card-shadow-hover);
  border-top-color: var(--brand-red);
}

.industry-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(0, 91, 172, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-blue);
  margin-bottom: 18px;
  transition: var(--transition);
}

.industry-card-icon .svg-icon {
  width: 24px;
  height: 24px;
}

.industry-card:hover .industry-card-icon {
  background: var(--brand-red);
  color: #fff;
  transform: scale(1.05);
}

.industry-card h3 {
  font-size: 1.18rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-dark);
}

.industry-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 18px;
}

.industry-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
}

.tag-badge {
  padding: 3px 8px;
  background: #f1f5f9;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  color: var(--brand-blue);
  font-weight: 600;
}

/* ================= 核心产品矩阵 ================= */
.product-filter {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.filter-btn {
  padding: 8px 20px;
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-dark);
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn.active, .filter-btn:hover {
  background: var(--brand-blue);
  border-color: var(--brand-blue);
  color: #fff;
  box-shadow: 0 4px 14px rgba(0, 91, 172, 0.3);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.product-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-light);
  box-shadow: var(--card-shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--card-shadow-hover);
  border-color: var(--brand-blue);
}

.product-image {
  height: 220px;
  background: #0f172a;
  position: relative;
  overflow: hidden;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.product-card:hover .product-image img {
  transform: scale(1.05);
}

.product-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--brand-red);
  color: #fff;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 700;
  z-index: 2;
  box-shadow: 0 2px 8px rgba(229, 0, 18, 0.4);
}

.product-content {
  padding: 22px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.product-content h4 {
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 8px;
}

.product-content p {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin-bottom: 16px;
  flex-grow: 1;
}

.product-specs {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: #f8fafc;
  padding: 12px;
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  font-size: 0.8rem;
  color: #475569;
}

.product-actions {
  display: flex;
  gap: 8px;
}

.product-actions .btn {
  flex: 1;
  padding: 8px 10px;
  font-size: 0.85rem;
}

/* ================= 重点工程业绩 ================= */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.case-card {
  background: var(--dark-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-dark);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.case-card:hover {
  background: var(--dark-surface-2);
  border-color: var(--brand-red);
  transform: translateY(-5px);
}

.case-img {
  height: 180px;
  overflow: hidden;
}

.case-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

.case-card:hover .case-img img {
  transform: scale(1.06);
}

.case-body {
  padding: 22px;
  flex-grow: 1;
}

.case-tag {
  color: var(--brand-red-light);
  font-size: 0.78rem;
  font-weight: 700;
  margin-bottom: 8px;
  display: inline-block;
}

.case-card h4 {
  font-size: 1.08rem;
  color: #fff;
  margin-bottom: 8px;
}

.case-card p {
  font-size: 0.86rem;
  color: var(--text-light-muted);
  line-height: 1.6;
}

/* ================= 新闻中心 ================= */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 24px;
  border: 1px solid var(--border-light);
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.news-card:hover {
  transform: translateY(-4px);
  border-color: var(--brand-blue);
}

.news-date {
  font-size: 0.82rem;
  color: var(--brand-red);
  font-weight: 700;
  margin-bottom: 10px;
}

.news-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-dark);
}

.news-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  flex-grow: 1;
}

/* ================= 联系我们 ================= */
.contact-wrapper {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  box-shadow: var(--card-shadow);
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  overflow: hidden;
}

.contact-info {
  background: linear-gradient(135deg, var(--dark-bg), var(--dark-surface));
  color: #fff;
  padding: 44px 36px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.contact-info h3 {
  font-size: 1.7rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.contact-info p {
  color: var(--text-light-muted);
  font-size: 0.92rem;
  margin-bottom: 28px;
}

.contact-items {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.c-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.c-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(229, 0, 18, 0.15);
  color: var(--brand-red-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.c-icon .svg-icon {
  width: 16px;
  height: 16px;
}

.c-detail h5 {
  font-size: 0.82rem;
  color: var(--text-light-muted);
  margin-bottom: 2px;
}

.c-detail p {
  font-size: 0.95rem;
  color: #fff;
  font-weight: 600;
  margin-bottom: 0;
}

.contact-form {
  padding: 44px 36px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-family: inherit;
  outline: none;
  transition: var(--transition);
}

.form-control:focus {
  border-color: var(--brand-blue);
  box-shadow: 0 0 0 3px rgba(0, 91, 172, 0.15);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

/* ================= 页脚 ================= */
.footer {
  background: #050b18;
  color: #94a3b8;
  padding-top: 60px;
  padding-bottom: 30px;
  border-top: 1px solid var(--border-dark);
  font-size: 0.88rem;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 36px;
  margin-bottom: 40px;
}

.footer-logo-wrap {
  margin-bottom: 18px;
  background: #ffffff;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  display: inline-block;
}

.footer-logo-wrap img {
  height: 38px;
}

.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 8px;
}

.footer-col h4::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--brand-red);
}

.footer-links li {
  margin-bottom: 9px;
}

.footer-links a:hover {
  color: #60a5fa;
  padding-left: 4px;
}

.footer-bottom {
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 0.8rem;
}

.footer-bottom a {
  color: var(--text-light-muted);
}

.footer-bottom a:hover {
  color: var(--brand-red-light);
}

/* 模态弹窗 */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
  padding: 20px;
}

.modal.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background: #fff;
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 100%;
  padding: 32px;
  position: relative;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
  transform: translateY(20px);
  transition: var(--transition);
}

.modal.active .modal-content {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 18px;
  right: 18px;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
}

.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  background: var(--brand-red);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 16px rgba(229, 0, 18, 0.4);
  cursor: pointer;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-3px);
  background: var(--brand-red-dark);
}

/* ================= 响应式断点 ================= */
@media (max-width: 1200px) {
  .nav-menu {
    gap: 16px;
  }
  .credentials-pillar-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-desc {
    margin: 0 auto 28px auto;
  }
  .hero-buttons {
    justify-content: center;
  }
  .hero-stats {
    justify-content: center;
  }
  .hero-title-sub {
    white-space: normal;
  }
  .about-main-card {
    grid-template-columns: 1fr;
  }
  .industry-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .products-grid, .cases-grid, .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .contact-wrapper {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 960px) {
  :root {
    --header-height: 70px;
  }
  .mobile-toggle {
    display: block;
  }
  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: -100%;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background: #ffffff;
    flex-direction: column;
    padding: 28px 24px;
    gap: 14px;
    transition: var(--transition);
    border-top: 1px solid var(--border-light);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    overflow-y: auto;
  }
  .nav-menu.active {
    left: 0;
  }
  .nav-item {
    width: 100%;
  }
  .nav-link {
    width: 100%;
    padding: 12px 16px;
    font-size: 1rem;
    color: var(--text-dark);
  }
  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    background: #f8fafc;
    box-shadow: none;
    border: 1px solid var(--border-light);
    padding-left: 20px;
  }
  .phone-link {
    display: none;
  }
}

@media (max-width: 640px) {
  .hero-content-simple .hero-title {
    font-size: 1.85rem;
  }
  .hero-content-simple .hero-title-sub {
    font-size: 1.35rem;
    white-space: normal;
  }
  .hero-content-simple .hero-desc {
    font-size: 0.95rem;
  }
  .hero-content-simple .hero-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
  }
  .hero-content-simple .stat-item h3 {
    font-size: 1.6rem;
  }
  .hero-content-simple .stat-item p {
    font-size: 0.75rem;
  }
  .logo-wrap img {
    height: 36px;
  }
  .credentials-pillar-grid, .industry-grid, .products-grid, .cases-grid, .news-grid {
    grid-template-columns: 1fr;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .values-strip-bar {
    flex-direction: column;
    align-items: flex-start;
  }
}