/* ============================================
   恒盛机械设备有限公司 - 设计系统样式
   高端硬核工业风 B2B 企业官网
   ============================================ */

/* === CSS 变量 / 设计令牌 === */
:root {
  /* 主色系 */
  --color-primary: #0F172A;       /* 极致工业黑蓝 */
  --color-gold: #D4AF37;          /* 机械鎏金 */
  --color-tech: #2563EB;          /* 科技蓝 */
  --color-dark: #1E293B;          /* 深色底 */
  --color-gray: #64748B;          /* 中灰 */
  --color-light: #F1F5F9;         /* 浅灰底 */

  /* 字体 */
  --font-heading: 'Inter', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;

  /* 字号层级 */
  --text-h1: 48px;
  --text-h2: 40px;
  --text-h3: 32px;
  --text-h4: 24px;
  --text-body: 16px;
  --text-sm: 14px;
  --text-xs: 12px;

  /* 字距 */
  --tracking-heading: -0.5px;
  --tracking-body: 0px;

  /* 行高 */
  --leading-heading: 1.15;
  --leading-body: 1.6;

  /* 间距 */
  --container-max: 1280px;
  --section-py: 80px;
  --section-py-mobile: 48px;
  --px: 32px;
  --px-mobile: 16px;

  /* 圆角 - 工业硬朗 */
  --radius-btn: 4px;
  --radius-card: 6px;
  --radius-sm: 2px;

  /* 阴影 - 低饱和精密 */
  --shadow-card: 0 4px 24px rgba(15, 23, 42, 0.12);
  --shadow-card-hover: 0 8px 32px rgba(15, 23, 42, 0.18);
  --shadow-btn: 0 2px 8px rgba(15, 23, 42, 0.15);
  --shadow-float: 0 8px 40px rgba(15, 23, 42, 0.25);

  /* 动效时长 */
  --duration-fast: 200ms;
  --duration-normal: 300ms;

  /* 边框 */
  --border-metal: 1px solid rgba(212, 175, 55, 0.2);
  --border-subtle: 1px solid rgba(100, 116, 139, 0.15);
}

/* === 全局基础 === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  color: var(--color-primary);
  background-color: #FFFFFF;
  overflow-x: hidden;
}

/* === 容器 === */
.container {
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--px-mobile);
  padding-right: var(--px-mobile);
}

@media (min-width: 768px) {
  .container {
    padding-left: var(--px);
    padding-right: var(--px);
  }
}

/* === 区块间距 === */
.section {
  padding-top: var(--section-py-mobile);
  padding-bottom: var(--section-py-mobile);
}

@media (min-width: 768px) {
  .section {
    padding-top: var(--section-py);
    padding-bottom: var(--section-py);
  }
}

/* === 标题系统 === */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: var(--tracking-heading);
  line-height: var(--leading-heading);
  color: var(--color-primary);
}

.h1 { font-size: var(--text-h1); }
.h2 { font-size: var(--text-h2); }
.h3 { font-size: var(--text-h3); }
.h4 { font-size: var(--text-h4); }

@media (max-width: 767px) {
  .h1 { font-size: 32px; }
  .h2 { font-size: 28px; }
  .h3 { font-size: 24px; }
  .h4 { font-size: 20px; }
}

/* === 鎏金装饰线 === */
.gold-line {
  width: 48px;
  height: 3px;
  background: var(--color-gold);
  display: block;
}

.gold-line-lg {
  width: 80px;
  height: 4px;
  background: var(--color-gold);
  display: block;
}

/* === 区块标题组合 === */
.section-header {
  margin-bottom: 48px;
}

.section-header .gold-line {
  margin-bottom: 16px;
}

.section-header h2 {
  margin-bottom: 12px;
}

.section-header p {
  color: var(--color-gray);
  font-size: var(--text-body);
  max-width: 600px;
}

/* === 按钮系统 - 工业硬朗 === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: 0.5px;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  border: none;
  cursor: pointer;
  transition: transform var(--duration-fast), background-color var(--duration-fast), box-shadow var(--duration-fast);
  text-decoration: none;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(1px);
  box-shadow: var(--shadow-btn);
}

.btn-primary {
  background: var(--color-primary);
  color: #FFFFFF;
}

.btn-primary:hover {
  background: #0c1322;
}

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

.btn-gold:hover {
  background: #c4a030;
}

.btn-tech {
  background: var(--color-tech);
  color: #FFFFFF;
}

.btn-tech:hover {
  background: #1d4ed8;
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: #FFFFFF;
}

.btn-outline-gold {
  background: transparent;
  color: var(--color-gold);
  border: 2px solid var(--color-gold);
}

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

.btn-lg {
  padding: 14px 36px;
  font-size: var(--text-body);
}

.btn-sm {
  padding: 8px 20px;
  font-size: var(--text-xs);
}

/* === 卡片系统 - 哑光金属质感 === */
.card {
  background: #FFFFFF;
  border: var(--border-subtle);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 24px;
  transition: transform var(--duration-normal), box-shadow var(--duration-normal), border-color var(--duration-normal);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(212, 175, 55, 0.4);
}

.card-dark {
  background: var(--color-dark);
  border: var(--border-metal);
  color: #FFFFFF;
  box-shadow: var(--shadow-card);
}

.card-dark:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(212, 175, 55, 0.5);
}

.card-metal {
  background: var(--color-primary);
  border: var(--border-metal);
  color: #FFFFFF;
  box-shadow: var(--shadow-card);
}

.card-metal:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(212, 175, 55, 0.6);
}

/* === 导航栏 === */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(212, 175, 55, 0.15);
  transition: background var(--duration-normal);
}

.navbar.scrolled {
  background: rgba(15, 23, 42, 0.98);
  border-bottom: 1px solid rgba(212, 175, 55, 0.25);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--px-mobile);
}

@media (min-width: 768px) {
  .navbar-inner {
    padding: 0 var(--px);
  }
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 20px;
  color: #FFFFFF;
  text-decoration: none;
  letter-spacing: var(--tracking-heading);
}

.nav-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: var(--color-gold);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--color-primary);
  font-weight: 900;
}

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

.nav-links {
  display: none;
  list-style: none;
  gap: 32px;
}

@media (min-width: 1200px) {
  .nav-links {
    display: flex;
  }
}

.nav-links a {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  letter-spacing: 0.3px;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: color var(--duration-fast), border-color var(--duration-fast);
}

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

.nav-cta {
  display: none;
}

@media (min-width: 768px) {
  .nav-cta {
    display: inline-flex;
  }
}

.nav-mobile-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-btn);
  cursor: pointer;
  color: #FFFFFF;
  font-size: 20px;
  transition: border-color var(--duration-fast);
}

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

@media (min-width: 1200px) {
  .nav-mobile-btn {
    display: none;
  }
}

/* 移动端菜单 */
.mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 999;
  background: rgba(15, 23, 42, 0.98);
  backdrop-filter: blur(16px);
  padding: 24px var(--px-mobile);
  overflow-y: auto;
}

.mobile-menu.open {
  display: block;
}

.mobile-menu a {
  display: block;
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  padding: 16px 0;
  border-bottom: 1px solid rgba(100, 116, 139, 0.2);
  transition: color var(--duration-fast);
}

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

.mobile-menu .btn {
  margin-top: 24px;
  width: 100%;
}

/* === 英雄 Banner === */
.hero {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  background: var(--color-primary);
  overflow: hidden;
}

.hero-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 120px var(--px-mobile) var(--section-py-mobile);
  position: relative;
  z-index: 2;
}

@media (min-width: 768px) {
  .hero-inner {
    padding: 140px var(--px) var(--section-py);
    min-height: 600px;
    display: flex;
    align-items: center;
  }
}

.hero-bg-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.06;
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 49px, rgba(212,175,55,0.3) 49px, rgba(212,175,55,0.3) 50px),
    repeating-linear-gradient(90deg, transparent, transparent 49px, rgba(212,175,55,0.3) 49px, rgba(212,175,55,0.3) 50px);
  z-index: 1;
}

.hero-accent-line {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-gold);
  z-index: 3;
}

.hero h1 {
  color: #FFFFFF;
  font-size: var(--text-h1);
  margin-bottom: 16px;
}

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

.hero .hero-sub {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--text-body);
  max-width: 560px;
  margin-bottom: 32px;
  line-height: var(--leading-body);
}

.hero-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

@media (max-width: 767px) {
  .hero h1 {
    font-size: 32px;
  }
  .hero .hero-sub {
    font-size: 15px;
  }
}

/* === 数据条 === */
.stats-bar {
  background: var(--color-dark);
  border-top: 1px solid rgba(212, 175, 55, 0.15);
  border-bottom: 1px solid rgba(212, 175, 55, 0.15);
}

.stats-bar-inner {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 32px var(--px-mobile);
}

@media (min-width: 768px) {
  .stats-bar-inner {
    grid-template-columns: repeat(4, 1fr);
    padding: 40px var(--px);
  }
}

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

.stat-number {
  font-family: var(--font-heading);
  font-size: 36px;
  font-weight: 700;
  color: var(--color-gold);
  letter-spacing: var(--tracking-heading);
  line-height: 1;
  margin-bottom: 6px;
}

.stat-label {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.5px;
}

@media (max-width: 767px) {
  .stat-number {
    font-size: 28px;
  }
}

/* === 产品网格 === */
.product-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 24px;
}

@media (min-width: 768px) {
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1200px) {
  .product-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.product-card {
  background: #FFFFFF;
  border: var(--border-subtle);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: transform var(--duration-normal), box-shadow var(--duration-normal), border-color var(--duration-normal);
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(212, 175, 55, 0.4);
}

.product-card-img {
  width: 100%;
  height: 220px;
  background: var(--color-light);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.product-card-img .img-placeholder {
  font-size: 48px;
  color: var(--color-gray);
}

.product-card-img .tag {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--color-primary);
  color: var(--color-gold);
  font-size: var(--text-xs);
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.5px;
}

.product-card-body {
  padding: 20px;
}

.product-card-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-primary);
}

.product-card-body p {
  font-size: var(--text-sm);
  color: var(--color-gray);
  line-height: 1.5;
  margin-bottom: 16px;
}

.product-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.product-card-footer .price {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  color: var(--color-gold);
  font-weight: 700;
}

/* === 优势图标卡 === */
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 24px;
}

@media (min-width: 768px) {
  .advantage-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1200px) {
  .advantage-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.advantage-card {
  text-align: center;
  padding: 32px 20px;
}

.advantage-card .icon-wrap {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  background: var(--color-primary);
  border: var(--border-metal);
  border-radius: var(--radius-card);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: var(--color-gold);
}

.advantage-card h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-primary);
}

.advantage-card p {
  font-size: var(--text-sm);
  color: var(--color-gray);
  line-height: 1.5;
}

/* === 页面 Banner (子页面) === */
.page-banner {
  background: var(--color-primary);
  padding: 120px var(--px-mobile) 60px;
  position: relative;
  overflow: hidden;
}

@media (min-width: 768px) {
  .page-banner {
    padding: 140px var(--px) 80px;
  }
}

.page-banner .hero-bg-pattern {
  opacity: 0.04;
}

.page-banner-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.page-banner h1 {
  color: #FFFFFF;
  font-size: var(--text-h2);
  margin-bottom: 12px;
}

.page-banner h1 .text-gold {
  color: var(--color-gold);
}

.page-banner p {
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--text-body);
  max-width: 480px;
}

.page-banner .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 24px;
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.5);
}

.page-banner .breadcrumb a {
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
  transition: color var(--duration-fast);
}

.page-banner .breadcrumb a:hover {
  color: var(--color-gold);
}

.page-banner .breadcrumb .sep {
  color: rgba(255, 255, 255, 0.3);
}

.page-banner .breadcrumb .current {
  color: var(--color-gold);
}

/* === 筛选标签 === */
.filter-tabs {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.filter-tab {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 500;
  padding: 8px 20px;
  border-radius: var(--radius-btn);
  border: 1px solid rgba(100, 116, 139, 0.3);
  background: transparent;
  color: var(--color-gray);
  cursor: pointer;
  transition: all var(--duration-fast);
}

.filter-tab:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
}

.filter-tab.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-gold);
}

/* === 图文布局 === */
.feature-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

@media (min-width: 768px) {
  .feature-row {
    grid-template-columns: 1fr 1fr;
  }
}

.feature-row.reverse {
  direction: rtl;
}

.feature-row.reverse > * {
  direction: ltr;
}

.feature-img {
  width: 100%;
  height: 360px;
  background: var(--color-light);
  border: var(--border-subtle);
  border-radius: var(--radius-card);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.feature-img .img-placeholder {
  font-size: 64px;
  color: var(--color-gray);
}

.feature-content .gold-line {
  margin-bottom: 12px;
}

.feature-content h3 {
  margin-bottom: 12px;
}

.feature-content p {
  color: var(--color-gray);
  margin-bottom: 16px;
}

.feature-content ul {
  list-style: none;
  padding: 0;
  margin-bottom: 24px;
}

.feature-content ul li {
  padding: 8px 0;
  font-size: var(--text-sm);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.feature-content ul li .check {
  color: var(--color-gold);
  font-weight: 700;
}

/* === 时间线 === */
.timeline {
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: rgba(212, 175, 55, 0.3);
}

.timeline-item {
  position: relative;
  padding-bottom: 40px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -21px;
  top: 4px;
  width: 12px;
  height: 12px;
  background: var(--color-gold);
  border-radius: 50%;
  border: 2px solid var(--color-primary);
}

.timeline-year {
  font-family: var(--font-heading);
  font-size: var(--text-h4);
  font-weight: 700;
  color: var(--color-gold);
  margin-bottom: 8px;
}

.timeline-desc {
  font-size: var(--text-sm);
  color: var(--color-gray);
  line-height: 1.5;
}

/* === 资质证书网格 === */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

@media (min-width: 768px) {
  .cert-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1200px) {
  .cert-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.cert-card {
  background: #FFFFFF;
  border: var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 24px;
  text-align: center;
  transition: transform var(--duration-normal), box-shadow var(--duration-normal), border-color var(--duration-normal);
}

.cert-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(212, 175, 55, 0.4);
}

.cert-card .cert-img {
  width: 100%;
  height: 180px;
  background: var(--color-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.cert-card .cert-img .placeholder {
  font-size: 36px;
  color: var(--color-gray);
}

.cert-card h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 4px;
}

.cert-card p {
  font-size: var(--text-xs);
  color: var(--color-gray);
}

/* === 案例卡片 === */
.case-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 24px;
}

@media (min-width: 768px) {
  .case-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1200px) {
  .case-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.case-card {
  background: #FFFFFF;
  border: var(--border-subtle);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: transform var(--duration-normal), box-shadow var(--duration-normal), border-color var(--duration-normal);
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(212, 175, 55, 0.4);
}

.case-card-img {
  width: 100%;
  height: 240px;
  background: var(--color-light);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.case-card-img .placeholder {
  font-size: 56px;
  color: var(--color-gray);
}

.case-card-img .overlay {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--duration-normal);
}

.case-card:hover .case-card-img .overlay {
  opacity: 1;
}

.case-card-body {
  padding: 20px;
}

.case-card-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
}

.case-card-body .meta {
  font-size: var(--text-xs);
  color: var(--color-gray);
  margin-bottom: 8px;
  display: flex;
  gap: 16px;
}

.case-card-body p {
  font-size: var(--text-sm);
  color: var(--color-gray);
  line-height: 1.5;
}

/* === 联系表单 === */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 6px;
  display: block;
}

.form-input {
  width: 100%;
  height: 44px;
  padding: 0 16px;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-primary);
  background: #FFFFFF;
  border: 1px solid rgba(100, 116, 139, 0.3);
  border-radius: var(--radius-btn);
  outline: none;
  transition: border-color var(--duration-fast);
}

.form-input:focus {
  border-color: var(--color-gold);
}

.form-input::placeholder {
  color: var(--color-gray);
}

.form-textarea {
  width: 100%;
  min-height: 120px;
  padding: 12px 16px;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-primary);
  background: #FFFFFF;
  border: 1px solid rgba(100, 116, 139, 0.3);
  border-radius: var(--radius-btn);
  outline: none;
  resize: vertical;
  transition: border-color var(--duration-fast);
}

.form-textarea:focus {
  border-color: var(--color-gold);
}

.form-textarea::placeholder {
  color: var(--color-gray);
}

.form-select {
  width: 100%;
  height: 44px;
  padding: 0 16px;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-primary);
  background: #FFFFFF;
  border: 1px solid rgba(100, 116, 139, 0.3);
  border-radius: var(--radius-btn);
  outline: none;
  appearance: none;
  cursor: pointer;
  transition: border-color var(--duration-fast);
}

.form-select:focus {
  border-color: var(--color-gold);
}

/* === 联系信息卡 === */
.contact-info-card {
  background: var(--color-primary);
  border: var(--border-metal);
  border-radius: var(--radius-card);
  padding: 32px;
  color: #FFFFFF;
}

.contact-info-item {
  display: flex;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid rgba(100, 116, 139, 0.2);
}

.contact-info-item:last-child {
  border-bottom: none;
}

.contact-info-item .icon {
  width: 44px;
  height: 44px;
  background: rgba(212, 175, 55, 0.15);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--color-gold);
  flex-shrink: 0;
}

.contact-info-item .info h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-gold);
  margin-bottom: 4px;
}

.contact-info-item .info p {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.5;
}

/* === CTA 区块 === */
.cta-section {
  background: var(--color-primary);
  border-top: 1px solid rgba(212, 175, 55, 0.15);
  border-bottom: 1px solid rgba(212, 175, 55, 0.15);
  position: relative;
  overflow: hidden;
}

.cta-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--section-py-mobile) var(--px-mobile);
  text-align: center;
  position: relative;
  z-index: 2;
}

@media (min-width: 768px) {
  .cta-inner {
    padding: var(--section-py) var(--px);
  }
}

.cta-section h2 {
  color: #FFFFFF;
  margin-bottom: 12px;
}

.cta-section h2 .text-gold {
  color: var(--color-gold);
}

.cta-section p {
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 32px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

/* === 页脚 === */
.footer {
  background: var(--color-primary);
  border-top: 1px solid rgba(212, 175, 55, 0.1);
}

.footer-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 60px var(--px-mobile) 0;
}

@media (min-width: 768px) {
  .footer-inner {
    padding: 80px var(--px) 0;
  }
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 18px;
  color: #FFFFFF;
  margin-bottom: 16px;
}

.footer-brand .footer-logo .logo-icon {
  width: 32px;
  height: 32px;
  background: var(--color-gold);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--color-primary);
  font-weight: 900;
}

.footer-brand .footer-logo .logo-text-gold {
  color: var(--color-gold);
}

.footer-brand p {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.5;
  margin-bottom: 20px;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-gold);
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  padding: 6px 0;
}

.footer-col ul li a {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
  transition: color var(--duration-fast);
}

.footer-col ul li a:hover {
  color: var(--color-gold);
}

.footer-bottom {
  margin-top: 48px;
  padding: 20px 0;
  border-top: 1px solid rgba(100, 116, 139, 0.2);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.4);
}

.footer-bottom .footer-links {
  display: flex;
  gap: 16px;
}

.footer-bottom .footer-links a {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.4);
  text-decoration: none;
  transition: color var(--duration-fast);
}

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

/* === 悬浮客服 === */
.float-service {
  position: fixed;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 900;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

@media (max-width: 767px) {
  .float-service {
    right: 8px;
    top: auto;
    bottom: 16px;
    transform: none;
  }
}

.float-btn {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  border: 1px solid rgba(212, 175, 55, 0.3);
  border-radius: var(--radius-card);
  cursor: pointer;
  color: var(--color-gold);
  font-size: 20px;
  box-shadow: var(--shadow-float);
  transition: transform var(--duration-fast), background var(--duration-fast), border-color var(--duration-fast);
  position: relative;
}

.float-btn:hover {
  transform: translateY(-2px);
  background: var(--color-dark);
  border-color: var(--color-gold);
}

.float-btn .tooltip {
  position: absolute;
  right: 56px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--color-primary);
  color: #FFFFFF;
  font-size: var(--text-xs);
  padding: 6px 12px;
  border-radius: var(--radius-btn);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-fast);
  border: 1px solid rgba(212, 175, 55, 0.2);
}

.float-btn:hover .tooltip {
  opacity: 1;
}

/* 微信二维码弹出 */
.wechat-popup {
  position: absolute;
  right: 56px;
  top: 50%;
  transform: translateY(-50%);
  background: #FFFFFF;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-float);
  padding: 16px;
  width: 160px;
  text-align: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal);
}

.wechat-popup.open {
  opacity: 1;
  pointer-events: auto;
}

.wechat-popup .qr-placeholder {
  width: 128px;
  height: 128px;
  background: var(--color-light);
  border: 1px solid rgba(100, 116, 139, 0.2);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 8px;
  font-size: 24px;
  color: var(--color-gray);
}

.wechat-popup p {
  font-size: var(--text-xs);
  color: var(--color-primary);
  font-weight: 600;
}

.wechat-popup .scan-tip {
  font-size: var(--text-xs);
  color: var(--color-gray);
  margin-top: 4px;
}

/* === 滚动渐入动画 === */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-normal), transform var(--duration-normal);
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-up.delay-1 { transition-delay: 100ms; }
.fade-up.delay-2 { transition-delay: 200ms; }
.fade-up.delay-3 { transition-delay: 300ms; }
.fade-up.delay-4 { transition-delay: 400ms; }

/* === 深色区块背景 === */
.bg-dark-section {
  background: var(--color-dark);
}

.bg-primary-section {
  background: var(--color-primary);
}

.bg-light-section {
  background: var(--color-light);
}

/* === 辅助 === */
.text-gold {
  color: var(--color-gold);
}

.text-tech {
  color: var(--color-tech);
}

.text-gray {
  color: var(--color-gray);
}

.text-white {
  color: #FFFFFF;
}

.text-white-60 {
  color: rgba(255, 255, 255, 0.6);
}

.text-white-80 {
  color: rgba(255, 255, 255, 0.8);
}

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

.border-metal {
  border-color: rgba(212, 175, 55, 0.2);
}

.bg-gold {
  background: var(--color-gold);
}

.bg-primary {
  background: var(--color-primary);
}

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

.bg-tech {
  background: var(--color-tech);
}

.bg-light {
  background: var(--color-light);
}

/* === 工厂实力 - 大数字区块 === */
.strength-num-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

@media (min-width: 768px) {
  .strength-num-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.strength-num-item {
  text-align: center;
  padding: 32px 20px;
  background: var(--color-primary);
  border: var(--border-metal);
  border-radius: var(--radius-card);
}

.strength-num-item .num {
  font-family: var(--font-heading);
  font-size: 40px;
  font-weight: 700;
  color: var(--color-gold);
  margin-bottom: 8px;
  line-height: 1;
}

.strength-num-item .unit {
  font-size: 16px;
  color: var(--color-gold);
  font-weight: 400;
}

.strength-num-item .label {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.6);
  margin-top: 6px;
}

/* === 设备展示网格 === */
.equipment-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 24px;
}

@media (min-width: 768px) {
  .equipment-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1200px) {
  .equipment-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.equipment-item {
  background: #FFFFFF;
  border: var(--border-subtle);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: transform var(--duration-normal), box-shadow var(--duration-normal), border-color var(--duration-normal);
}

.equipment-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(212, 175, 55, 0.4);
}

.equipment-item .img-area {
  width: 100%;
  height: 260px;
  background: var(--color-light);
  display: flex;
  align-items: center;
  justify-content: center;
}

.equipment-item .img-area .placeholder {
  font-size: 56px;
  color: var(--color-gray);
}

.equipment-item .info-area {
  padding: 20px;
}

.equipment-item .info-area h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
}

.equipment-item .info-area p {
  font-size: var(--text-sm);
  color: var(--color-gray);
  line-height: 1.4;
}

/* === 表格样式 === */
.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-gold);
  background: var(--color-primary);
  padding: 12px 16px;
  text-align: left;
  border-bottom: 2px solid rgba(212, 175, 55, 0.3);
}

.data-table td {
  font-size: var(--text-sm);
  color: var(--color-primary);
  padding: 12px 16px;
  border-bottom: 1px solid rgba(100, 116, 139, 0.15);
}

.data-table tbody tr:hover {
  background: var(--color-light);
}

/* === 地图占位 === */
.map-placeholder {
  width: 100%;
  height: 300px;
  background: var(--color-light);
  border: var(--border-subtle);
  border-radius: var(--radius-card);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray);
  font-size: 48px;
}

@media (min-width: 768px) {
  .map-placeholder {
    height: 400px;
  }
}