/* ========================================
   石家庄金地钻探机械有限公司 - 企业官网样式
   简约大气 · 工业风格
   ======================================== */

/* ===== CSS 变量 ===== */
:root {
  --color-primary: #0d2840;
  --color-primary-light: #1a4470;
  --color-primary-lighter: #2563a8;
  --color-accent: #e8821c;
  --color-accent-dark: #c96f15;
  --color-accent-light: #f5a623;
  --color-dark: #1a202c;
  --color-text: #2d3748;
  --color-text-light: #64748b;
  --color-text-lighter: #94a3b8;
  --color-bg: #ffffff;
  --color-bg-light: #f8fafc;
  --color-bg-gray: #f1f5f9;
  --color-border: #e2e8f0;
  --color-success: #16a34a;
  --color-white: #ffffff;

  --font-main: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --container-max: 1200px;
  --header-height: 72px;

  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== 重置 ===== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-main);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

ul,
ol {
  list-style: none;
}

/* ===== 容器 ===== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  letter-spacing: 0.5px;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(232, 130, 28, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.5);
}

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

.btn-dark {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn-dark:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(13, 40, 64, 0.25);
}

/* ===== 标题样式 ===== */
.section {
  padding: 90px 0;
}

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

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

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

.section-header .eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.section-header h2 {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.3;
  margin-bottom: 16px;
}

.section-dark .section-header h2 {
  color: var(--color-white);
}

.section-header p {
  font-size: 1.05rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

.section-dark .section-header p {
  color: rgba(255, 255, 255, 0.75);
}

/* ===== 导航栏 ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

.nav {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--color-primary);
}

.logo-img {
  height: 48px;
  width: auto;
  max-width: 220px;
  object-fit: contain;
  display: block;
  flex-shrink: 0;
  transition: opacity 0.3s ease;
}

.logo-img:hover {
  opacity: 0.85;
}

/* 页脚 LOGO：使用专门的白色版 LOGO（透明背景+白色前景） */
.logo-img--light {
  background: rgba(255, 255, 255, 0.06);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  height: 56px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-size: 1.3rem;
  flex-shrink: 0;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-text .name {
  font-size: 1rem;
  font-weight: 700;
}

.logo-text .en {
  font-size: 0.65rem;
  color: var(--color-text-light);
  font-weight: 500;
  letter-spacing: 0.5px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-menu a {
  padding: 8px 18px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  position: relative;
}

.nav-menu a:hover {
  color: var(--color-accent);
  background: rgba(232, 130, 28, 0.06);
}

.nav-menu a.active {
  color: var(--color-accent);
}

.nav-menu a.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 18px;
  right: 18px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
}

.nav-cta {
  margin-left: 12px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== Hero 区域 ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #0a1f33 0%, #0d2840 40%, #1a4470 100%);
  overflow: hidden;
  padding-top: var(--header-height);
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(232, 130, 28, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(37, 99, 168, 0.15) 0%, transparent 50%);
}

.hero-pattern {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='1'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(232, 130, 28, 0.15);
  border: 1px solid rgba(232, 130, 28, 0.3);
  border-radius: 50px;
  color: var(--color-accent-light);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 28px;
  backdrop-filter: blur(10px);
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 900;
  color: var(--color-white);
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: -1px;
}

.hero h1 .highlight {
  color: var(--color-accent);
}

.hero p {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.9;
  margin-bottom: 40px;
  max-width: 600px;
}

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

.hero-stats {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-top: 80px;
  padding-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-stat .number {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 8px;
}

.hero-stat .label {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
  font-weight: 500;
}

/* ===== 亮点栏 ===== */
.highlights {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: -60px;
  position: relative;
  z-index: 10;
  padding-bottom: 0;
}

.highlight-card {
  background: var(--color-white);
  padding: 36px 28px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.highlight-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-accent);
}

.highlight-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--color-accent);
}

.highlight-icon svg {
  width: 26px;
  height: 26px;
}

.highlight-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.highlight-card p {
  font-size: 0.92rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ===== 产品网格 ===== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.product-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

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

.product-img {
  height: 200px;
  background: linear-gradient(135deg, var(--color-bg-gray), var(--color-border));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.product-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

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

.product-img svg {
  width: 80px;
  height: 80px;
  color: var(--color-primary-light);
  opacity: 0.6;
  transition: var(--transition);
}

.product-card:hover .product-img svg {
  transform: scale(1.1);
  color: var(--color-accent);
  opacity: 0.8;
}

.product-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 12px;
  background: rgba(13, 40, 64, 0.85);
  color: var(--color-white);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 50px;
  backdrop-filter: blur(8px);
}

.product-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-body h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.product-body .desc {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 16px;
  flex: 1;
}

.product-features {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.product-features span {
  padding: 4px 10px;
  background: var(--color-bg-gray);
  color: var(--color-text-light);
  font-size: 0.75rem;
  border-radius: var(--radius-sm);
  font-weight: 500;
}

/* ===== 优势区域 ===== */
.advantages {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.advantage-item {
  display: flex;
  gap: 20px;
  padding: 28px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.advantage-item:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.advantage-num {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--color-bg-gray);
  line-height: 1;
  flex-shrink: 0;
  transition: var(--transition);
}

.advantage-item:hover .advantage-num {
  color: var(--color-accent);
  opacity: 0.3;
}

.advantage-content h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.advantage-content p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ===== 全球覆盖区域 ===== */
.global-section {
  position: relative;
  overflow: hidden;
}

.global-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.global-info h2 {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--color-white);
  margin-bottom: 20px;
  line-height: 1.3;
}

.global-info p {
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.9;
  margin-bottom: 32px;
}

.global-regions {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.region-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.region-item:hover {
  background: rgba(232, 130, 28, 0.1);
  border-color: rgba(232, 130, 28, 0.3);
}

.region-item svg {
  width: 20px;
  height: 20px;
  color: var(--color-accent);
  flex-shrink: 0;
}

.region-item span {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.95rem;
  font-weight: 500;
}

.global-visual {
  position: relative;
  height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.global-circle {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(232, 130, 28, 0.15);
}

.global-circle:nth-child(1) { width: 380px; height: 380px; }
.global-circle:nth-child(2) { width: 280px; height: 280px; border-color: rgba(232, 130, 28, 0.2); }
.global-circle:nth-child(3) { width: 180px; height: 180px; border-color: rgba(232, 130, 28, 0.25); }

.global-center {
  position: relative;
  z-index: 2;
  width: 120px;
  height: 120px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: var(--color-white);
  box-shadow: 0 0 60px rgba(232, 130, 28, 0.3);
}

.global-dot {
  position: absolute;
  width: 12px;
  height: 12px;
  background: var(--color-accent);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--color-accent);
  animation: pulse 2s ease-in-out infinite;
}

.global-dot:nth-child(4) { top: 15%; left: 20%; animation-delay: 0s; }
.global-dot:nth-child(5) { top: 25%; right: 15%; animation-delay: 0.3s; }
.global-dot:nth-child(6) { bottom: 20%; left: 25%; animation-delay: 0.6s; }
.global-dot:nth-child(7) { bottom: 15%; right: 20%; animation-delay: 0.9s; }
.global-dot:nth-child(8) { top: 50%; left: 5%; animation-delay: 1.2s; }
.global-dot:nth-child(9) { top: 50%; right: 5%; animation-delay: 1.5s; }

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.5); opacity: 0.6; }
}

/* ===== CTA 区域 ===== */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(232, 130, 28, 0.15), transparent 70%);
  border-radius: 50%;
}

.cta-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.cta-content h2 {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--color-white);
  margin-bottom: 16px;
}

.cta-content p {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 36px;
  line-height: 1.8;
}

/* ===== 页面 Banner ===== */
.page-banner {
  padding: calc(var(--header-height) + 80px) 0 80px;
  background: linear-gradient(135deg, #0a1f33, #0d2840, #1a4470);
  position: relative;
  overflow: hidden;
}

.page-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    radial-gradient(circle at 70% 50%, rgba(232, 130, 28, 0.1), transparent 60%);
}

.page-banner-content {
  position: relative;
  z-index: 2;
  text-align: center;
}

.page-banner h1 {
  font-size: 2.8rem;
  font-weight: 900;
  color: var(--color-white);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.page-banner p {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.65);
  max-width: 600px;
  margin: 0 auto;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 24px;
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.5);
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

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

.breadcrumb .current {
  color: var(--color-accent);
}

/* ===== 关于我们 - 公司简介 ===== */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-text h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 24px;
  line-height: 1.3;
}

.about-text p {
  color: var(--color-text-light);
  line-height: 1.9;
  margin-bottom: 20px;
}

.about-text .quote {
  padding: 24px;
  background: var(--color-bg-light);
  border-left: 4px solid var(--color-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 28px 0;
}

.about-text .quote p {
  color: var(--color-primary);
  font-weight: 600;
  font-size: 1.05rem;
  margin-bottom: 0;
}

.about-visual {
  position: relative;
  height: 460px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M0 0h20v20H0V0zm20 20h20v20H20V20z'/%3E%3C/g%3E%3C/svg%3E");
}

.about-visual-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--color-white);
  padding: 40px;
}

.about-visual-content .big-num {
  font-size: 4rem;
  font-weight: 900;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 12px;
}

.about-visual-content .label {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.8);
  font-weight: 500;
}

.about-visual-content .sub {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
  margin-top: 8px;
}

/* ===== 时间线 ===== */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding: 20px 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  width: 50%;
  padding: 0 40px 50px;
}

.timeline-item:nth-child(odd) {
  left: 0;
  text-align: right;
}

.timeline-item:nth-child(even) {
  left: 50%;
}

.timeline-item::after {
  content: '';
  position: absolute;
  top: 6px;
  width: 16px;
  height: 16px;
  background: var(--color-accent);
  border: 3px solid var(--color-white);
  border-radius: 50%;
  box-shadow: 0 0 0 3px var(--color-accent);
  z-index: 2;
}

.timeline-item:nth-child(odd)::after {
  right: -8px;
}

.timeline-item:nth-child(even)::after {
  left: -8px;
}

.timeline-year {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.timeline-content h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.timeline-content p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ===== 设备能力 ===== */
.equipment-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.equipment-card {
  display: flex;
  gap: 20px;
  padding: 28px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.equipment-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.equipment-icon {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  background: var(--color-bg-gray);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.equipment-card:hover .equipment-icon {
  background: var(--color-primary);
  color: var(--color-accent);
}

.equipment-icon svg {
  width: 28px;
  height: 28px;
}

.equipment-info h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.equipment-info p {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ===== 厂区掠影 / 生产实拍 ===== */
.factory-gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.factory-gallery-item {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  background: var(--color-bg-gray);
}

.factory-gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.factory-gallery-item:hover img {
  transform: scale(1.08);
}

.factory-gallery-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 28px 12px 12px;
  background: linear-gradient(transparent, rgba(13, 40, 64, 0.8));
  color: #fff;
  font-size: 0.85rem;
  font-weight: 500;
  opacity: 0;
  transform: translateY(8px);
  transition: var(--transition);
}

.factory-gallery-item:hover .factory-gallery-caption {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 资质认证 ===== */
.certificates-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.certificate-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}

.certificate-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.certificate-img {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--color-bg-gray);
  display: flex;
  align-items: center;
  justify-content: center;
}

.certificate-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 12px;
  transition: var(--transition);
}

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

.certificate-info {
  padding: 16px;
  text-align: center;
  border-top: 1px solid var(--color-border);
}

.certificate-info h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 6px;
  line-height: 1.4;
}

.certificate-info p {
  font-size: 0.8rem;
  color: var(--color-text-light);
  line-height: 1.5;
}

/* 可点击放大的元素 */
[data-lightbox] { cursor: pointer; }

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(13, 40, 64, 0.92);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.lightbox.active {
  opacity: 1;
  visibility: visible;
}

.lightbox img {
  max-width: 90%;
  max-height: 82vh;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: 0 25px 60px rgba(0,0,0,0.4);
}

.lightbox-caption {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  color: #fff;
  font-size: 1rem;
  text-align: center;
  max-width: 80%;
  padding: 8px 16px;
  background: rgba(0, 0, 0, 0.35);
  border-radius: var(--radius-sm);
  text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

.lightbox-close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.lightbox-close:hover {
  background: rgba(255,255,255,0.2);
}

/* ===== 产品技术参数 ===== */
.specs-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 32px;
  justify-content: center;
}

.specs-tab {
  padding: 12px 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-white);
  color: var(--color-primary);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.specs-tab:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.specs-tab.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.specs-panel {
  display: none;
  animation: fadeIn 0.4s ease;
}

.specs-panel.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.specs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.spec-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.spec-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.spec-card-img {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  cursor: pointer;
  background: #f8f9fa;
  display: flex;
  align-items: center;
  justify-content: center;
}

.spec-card-img img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  padding: 12px;
  transition: var(--transition);
}

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

.spec-card-body {
  padding: 14px 16px;
  border-top: 1px solid var(--color-border);
}

.spec-card-body h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-primary);
  text-align: center;
}

.spec-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  background: var(--color-white);
}

.spec-table th,
.spec-table td {
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}

.spec-table th {
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
}

.spec-table tr:nth-child(even) {
  background: var(--color-bg-gray);
}

.spec-text {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.spec-text h4 {
  font-size: 1.1rem;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.spec-text ul {
  list-style: disc;
  padding-left: 20px;
  color: var(--color-text);
  line-height: 1.8;
}

.spec-text li {
  margin-bottom: 6px;
}

/* ===== 价值观 ===== */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.value-card {
  text-align: center;
  padding: 40px 28px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.value-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-accent);
}

.value-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
}

.value-icon svg {
  width: 30px;
  height: 30px;
}

.value-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.value-card p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

/* ===== 产品详情 ===== */
.product-detail-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.product-filter {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.filter-btn {
  padding: 10px 24px;
  background: var(--color-white);
  border: 2px solid var(--color-border);
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

/* ===== 联系页面 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-info-item {
  display: flex;
  gap: 20px;
  padding: 28px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.contact-info-item:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.contact-info-icon {
  width: 52px;
  height: 52px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
}

.contact-info-icon svg {
  width: 24px;
  height: 24px;
}

.contact-info-item h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.contact-info-item p {
  font-size: 0.92rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

.contact-form-wrap {
  background: var(--color-white);
  padding: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}

.contact-form-wrap h3 {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.contact-form-wrap .sub {
  font-size: 0.92rem;
  color: var(--color-text-light);
  margin-bottom: 32px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.form-group label .required {
  color: var(--color-accent);
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: var(--font-main);
  color: var(--color-text);
  background: var(--color-bg-light);
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-accent);
  background: var(--color-white);
  box-shadow: 0 0 0 3px rgba(232, 130, 28, 0.1);
}

.form-control::placeholder {
  color: var(--color-text-lighter);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-message {
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 20px;
  display: none;
}

.form-message.success {
  display: block;
  background: rgba(22, 163, 74, 0.1);
  color: var(--color-success);
  border: 1px solid rgba(22, 163, 74, 0.2);
}

/* 地图区域 */
.map-section {
  padding: 0;
  height: 420px;
  background: var(--color-bg-gray);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.map-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(13, 40, 64, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(13, 40, 64, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.map-placeholder {
  text-align: center;
  color: var(--color-text-light);
  position: relative;
  z-index: 1;
}

.map-placeholder svg {
  width: 64px;
  height: 64px;
  margin-bottom: 16px;
  color: var(--color-accent);
}

.map-placeholder p {
  font-size: 1rem;
  font-weight: 500;
}

.map-placeholder .sub {
  font-size: 0.85rem;
  color: var(--color-text-lighter);
  margin-top: 4px;
}

.map-links {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 24px;
}

.map-links a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 24px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
}

.map-links a:first-child {
  background: var(--color-primary);
  color: #fff;
}

.map-links a:first-child:hover {
  background: #1a3a5a;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(13, 40, 64, 0.2);
}

.map-links a:last-child {
  background: #fff;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.map-links a:last-child:hover {
  background: var(--color-primary);
  color: #fff;
}

.map-links svg {
  width: 18px;
  height: 18px;
}

/* ===== 页脚 ===== */
.footer {
  background: #0a1a2a;
  color: rgba(255, 255, 255, 0.6);
  padding: 70px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 50px;
}

.footer-brand .logo {
  color: var(--color-white);
  margin-bottom: 20px;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.8;
  margin-bottom: 24px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.5);
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--color-accent);
  color: var(--color-white);
}

.footer-social svg {
  width: 20px;
  height: 20px;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 20px;
}

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col ul li a {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.5);
  transition: var(--transition);
}

.footer-col ul li a:hover {
  color: var(--color-accent);
  padding-left: 6px;
}

.footer-contact li {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer-contact li svg {
  width: 18px;
  height: 18px;
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 2px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.4);
}

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

/* ===== 回到顶部 ===== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
  box-shadow: var(--shadow-lg);
}

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

.back-to-top:hover {
  background: var(--color-accent);
  transform: translateY(-4px);
}

.back-to-top svg {
  width: 22px;
  height: 22px;
}

/* ===== 动画 ===== */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===== 行业资讯页 ===== */
.news-source-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 32px;
  justify-content: center;
}

.news-source-tab {
  padding: 10px 22px;
  border: 2px solid var(--color-border);
  border-radius: 50px;
  background: var(--color-white);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  transition: var(--transition);
}

.news-source-tab:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.news-source-tab.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.news-card {
  display: flex;
  flex-direction: column;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.news-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.news-card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.news-card-date {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  color: var(--color-text-lighter);
  margin-bottom: 12px;
}

.news-card-date svg {
  width: 14px;
  height: 14px;
}

.news-card-source {
  display: inline-block;
  padding: 2px 10px;
  background: rgba(232, 130, 28, 0.1);
  color: var(--color-accent);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 50px;
  margin-left: 8px;
}

.news-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card p {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.7;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}

.news-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
  transition: var(--transition);
}

.news-card-link:hover {
  gap: 10px;
}

.news-card-link svg {
  width: 16px;
  height: 16px;
}

/* 新闻加载动画 */
.news-loading {
  text-align: center;
  padding: 60px 20px;
}

.news-spinner {
  width: 40px;
  height: 40px;
  margin: 0 auto 16px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.news-loading p {
  color: var(--color-text-light);
  font-size: 0.95rem;
}

.news-error {
  text-align: center;
  padding: 60px 20px;
}

.news-error svg {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  color: var(--color-text-lighter);
}

.news-error h3 {
  font-size: 1.1rem;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.news-error p {
  color: var(--color-text-light);
  font-size: 0.9rem;
  margin-bottom: 20px;
}

.news-error-retry {
  padding: 10px 24px;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.news-error-retry:hover {
  background: var(--color-primary-light);
}

/* ===== 技术标准板块 ===== */
.standards-section {
  background: var(--color-white);
}

.standards-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 32px;
  justify-content: center;
}

.standards-tab {
  padding: 12px 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-white);
  color: var(--color-primary);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.standards-tab:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.standards-tab.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.standards-panel {
  display: none;
  animation: fadeIn 0.4s ease;
}

.standards-panel.active {
  display: block;
}

.standards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.standard-card {
  display: flex;
  gap: 20px;
  padding: 24px;
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.standard-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.standard-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
}

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

.standard-info {
  flex: 1;
}

.standard-number {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-accent);
  background: rgba(232, 130, 28, 0.08);
  padding: 2px 10px;
  border-radius: 50px;
  margin-bottom: 8px;
}

.standard-info h4 {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 6px;
  line-height: 1.4;
}

.standard-info p {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .hero h1 { font-size: 2.8rem; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .products-grid,
  .product-detail-grid { grid-template-columns: repeat(2, 1fr); }
  .certificates-grid { grid-template-columns: repeat(3, 1fr); }
  .factory-gallery { grid-template-columns: repeat(3, 1fr); }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .standards-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: 20px;
    gap: 0;
    box-shadow: var(--shadow-lg);
    transform: translateY(-150%);
    transition: transform 0.3s ease;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-menu.active {
    transform: translateY(0);
  }

  .nav-menu a {
    width: 100%;
    padding: 14px 18px;
    border-bottom: 1px solid var(--color-border);
  }

  .logo-img {
    height: 40px;
    max-width: 180px;
  }

  .nav-menu a.active::after { display: none; }

  .nav-cta { display: none; }
  .nav-toggle { display: flex; }

  .hero { min-height: auto; padding: 120px 0 60px; }
  .hero h1 { font-size: 2rem; }
  .hero p { font-size: 1rem; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); margin-top: 48px; }
  .hero-stat .number { font-size: 2rem; }

  .section { padding: 60px 0; }
  .section-header h2 { font-size: 1.8rem; }
  .section-header { margin-bottom: 40px; }

  .highlights { grid-template-columns: 1fr; margin-top: -40px; }
  .products-grid,
  .product-detail-grid { grid-template-columns: 1fr; }
  .advantages { grid-template-columns: 1fr; }
  .global-grid { grid-template-columns: 1fr; gap: 40px; }
  .global-visual { height: 320px; }
  .about-intro { grid-template-columns: 1fr; gap: 40px; }
  .about-visual { height: 300px; }
  .equipment-grid { grid-template-columns: 1fr; }
  .certificates-grid { grid-template-columns: repeat(2, 1fr); }
  .factory-gallery { grid-template-columns: repeat(2, 1fr); }
  .values-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .news-grid { grid-template-columns: 1fr; }
  .standards-grid { grid-template-columns: 1fr; }

  .page-banner h1 { font-size: 2rem; }
  .cta-content h2 { font-size: 1.6rem; }

  .timeline::before { left: 20px; }
  .timeline-item { width: 100%; padding-left: 50px; padding-right: 0; text-align: left; }
  .timeline-item:nth-child(odd) { text-align: left; }
  .timeline-item::after { left: 12px !important; right: auto !important; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.6rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .hero-stats { grid-template-columns: 1fr 1fr; gap: 20px; }
  .certificates-grid { grid-template-columns: 1fr; }
  .factory-gallery { grid-template-columns: 1fr; }
  .specs-tabs { gap: 8px; }
  .specs-tab { padding: 10px 16px; font-size: 0.9rem; }
  .global-regions { grid-template-columns: 1fr; }
  .logo-img { height: 36px; max-width: 160px; }
  .logo-img--light { height: 44px; padding: 6px 10px; }
}