/* 
 * 常州市厚德干燥设备厂 - 企业官方网站核心样式表
 * 风格：Sophisticated Dark 工业重工极简风 (奢华、高精、专业、可信赖)
 * 配色：高亮精细工正红 (#cc0000) 作为品牌主色调 + 哑光碳黑/深邃墨黑 (#0b0c0f / #111217) 作为主色基底 + 白金/霜月灰 (#ededf0 / #9ea2b0) 作为品质文本配比
 */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;700;900&family=Inter:wght@300;400;500;600;700;900&display=swap');

:root {
  --primary-color: #cc0000;     /* 工业机械正红 (从 Design HTML 精确提取) */
  --primary-hover: #aa0000;     /* 悬停深红 */
  --primary-light: rgba(204, 0, 0, 0.08); /* 极精细红晕背景 */
  --dark-bg: #0b0c0f;           /* 精致曜石黑 */
  --slate-bg: #111217;          /* 哑光碳羽黑 */
  --light-bg: #16181f;          /* 雾面精钢漆黑 (替代原 light-bg 使整站完全暗化) */
  --gray-bg: #0e1014;           /* 矿质深碳灰 */
  --border-color: #242731;      /* 精密高规复合线边色 */
  --border-thick: 2px solid #000000; /* 重工黑色底线 */
  --text-primary: #ededf0;      /* 白金色文本 */
  --text-secondary: #9ea2b0;    /* 霜月灰辅助字 */
  --text-light: #6c707f;        /* 砂岩灰描述字 */
  --font-family: "Space Grotesk", "Inter", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "Space Grotesk", ui-monospace, SFMono-Regular, Mencl, monospace;
  --transition-fast: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.5);
  --shadow-lg: 0 12px 28px rgba(0,0,0,0.7);
  --shadow-glow: 0 0 20px rgba(204, 0, 0, 0.15); /* 红色环境溢出微光 */
}

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

html {
  font-family: var(--font-family);
  scroll-behavior: smooth;
  color: var(--text-primary);
  background-color: var(--dark-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  line-height: 1.6;
  background-color: var(--dark-bg);
  overflow-x: hidden;
}

::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--dark-bg);
}
::-webkit-scrollbar-thumb {
  background: var(--primary-color);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--primary-hover);
}

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

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

/* 快速工具类 */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.text-center { text-align: center; }
.text-red { color: var(--primary-color); }
.text-white { color: #ffffff; }

/* 按钮样式 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1px;
  border-radius: 2px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition-normal);
  gap: 8px;
  text-transform: uppercase;
}

.btn-primary {
  background-color: var(--primary-color);
  color: #ffffff;
  border-color: var(--primary-color);
}
.btn-primary:hover {
  background-color: var(--primary-hover);
  border-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(204, 0, 0, 0.4);
}

.btn-outline {
  background-color: transparent;
  border-color: #ffffff;
  color: #ffffff;
}
.btn-outline:hover {
  background-color: #ffffff;
  color: var(--dark-bg);
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(255, 255, 255, 0.15);
}

.btn-dark {
  background-color: var(--slate-bg);
  color: #ffffff;
  border: 1px solid var(--border-color);
}
.btn-dark:hover {
  background-color: #000000;
  border-color: #ffffff;
  transform: translateY(-2px);
}

/* 分区通用标题 */
.section {
  padding: 100px 0;
  background-color: var(--light-bg);
  border-bottom: 1px solid var(--border-color);
}
.section-dark {
  background-color: var(--dark-bg);
  color: #ffffff;
}
.section-gray {
  background-color: var(--gray-bg);
}

.section-header {
  margin-bottom: 60px;
  position: relative;
}
.section-header h2 {
  font-size: 34px;
  font-weight: 900;
  font-style: italic; /* 贯彻 Design HTML 具有重工感的斜体 Display heading */
  letter-spacing: -0.5px;
  color: var(--text-primary);
  margin-bottom: 16px;
  position: relative;
  display: inline-block;
  padding-bottom: 18px;
  text-transform: uppercase;
}
.section-header h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 4px;
  background-color: var(--primary-color);
}
.section-header p {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.7;
}

/* 1. 顶部固定导航栏 */
.header-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 85px;
  background-color: rgba(11, 12, 15, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: var(--border-thick); /* Design HTML 的 header 底端双磅黑色粗重固边 */
  z-index: 1000;
  transition: var(--transition-normal);
}

.header-nav.scrolled {
  height: 70px;
  background-color: var(--slate-bg);
  border-bottom: 1px solid var(--primary-color); /* 滚动后变换高精激光细红底边线 */
  box-shadow: var(--shadow-md);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 120px;
  height: 28px;
  background-color: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0;
  border: none;
  box-shadow: none;
}

.brand-logo-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

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

.logo-title {
  font-size: 20px;
  font-weight: 900;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.logo-subtitle {
  font-size: 10px;
  color: var(--text-light);
  letter-spacing: 4px;
  text-transform: uppercase;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}

.nav-item a {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  position: relative;
  padding: 8px 0;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.nav-item a:hover,
.nav-item.active a {
  color: var(--primary-color);
}

.nav-item a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: var(--transition-normal);
}

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

.nav-right-phone {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  color: #ffffff;
  font-size: 15px;
  font-family: var(--font-mono);
  background-color: var(--primary-color); /* 在暗黑系中改用实红，增加强力转化锚 */
  padding: 6px 16px;
  border-radius: 0; /* 纯方正切割 */
  border: none;
  box-shadow: 0 2px 10px rgba(204, 0, 0, 0.3);
  transition: var(--transition-fast);
}

.nav-right-phone:hover {
  background-color: var(--primary-hover);
  transform: scale(1.02);
}

/* 汉堡按钮 */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 1001;
}

.hamburger span {
  width: 100%;
  height: 2px;
  background-color: var(--text-primary);
  transition: var(--transition-normal);
}

/* 2. 首屏 Banner 轮播图 */
.hero-slider-section {
  position: relative;
  height: 620px;
  background-color: #030405;
  margin-top: 85px; /* 避开黑金双磅顶固 */
  overflow: hidden;
}

.slider-container {
  height: 100%;
  position: relative;
}

.slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  visibility: hidden;
  transition: opacity 1s ease-in-out, visibility 1s ease-in-out;
  z-index: 1;
  display: flex;
  align-items: center;
}

.slide.active {
  opacity: 1;
  visibility: visible;
  z-index: 2;
}

.slide-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  filter: brightness(0.18) contrast(1.1); /* 进一步压低背景亮度，保留高级质感轮廓 */
}

/* 叠加精密黑金渐变，完美烘托 Sophisticated Dark 味道 */
.slide::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to right, rgba(11, 12, 15, 0.92) 30%, rgba(11, 12, 15, 0.5) 70%, rgba(11, 12, 15, 0.2) 100%);
  pointer-events: none;
  z-index: 3;
}

.slide-content-wrapper {
  position: relative;
  z-index: 10;
  width: 100%;
  color: #ffffff;
}

.slide-inner {
  max-width: 850px;
  border-left: 4px solid var(--primary-color); /* 精准汲取自 Design HTML banner border-l-4 style */
  padding-left: 28px;
}

.slide-badge {
  display: inline-block;
  background-color: var(--primary-color);
  color: #ffffff;
  padding: 4px 14px;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 2px;
  border-radius: 0; /* 纯方直角 */
  margin-bottom: 20px;
  text-transform: uppercase;
}

.slide h1 {
  font-size: 44px;
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: 18px;
  letter-spacing: -1px;
  text-shadow: 0 4px 8px rgba(0,0,0,0.5);
}

.slide p {
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 32px;
  color: var(--text-secondary);
}

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

/* 轮播控制器 */
.slider-dots {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 12px;
  z-index: 10;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.2);
  border: none;
  cursor: pointer;
  transition: var(--transition-normal);
}

.dot.active {
  background-color: var(--primary-color);
  width: 28px;
  border-radius: 5px;
}

.slider-arrows {
  position: absolute;
  top: 50%;
  width: 100%;
  display: flex;
  justify-content: space-between;
  transform: translateY(-50%);
  padding: 0 40px;
  z-index: 10;
  pointer-events: none;
}

.slider-arrow {
  width: 48px;
  height: 48px;
  border-radius: 0; /* 采用硬朗直角 */
  background-color: rgba(11, 12, 17, 0.8);
  color: #ffffff;
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  pointer-events: auto;
  transition: var(--transition-normal);
}

.slider-arrow:hover {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  transform: scale(1.05);
  box-shadow: 0 0 15px rgba(204, 0, 0, 0.4);
}

/* 突出宣传栏 / SEO 特点条 */
.feature-highlights-bar {
  background-color: var(--slate-bg);
  padding: 24px 0;
  border-bottom: 3px solid var(--primary-color);
}

.highlights-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 16px;
  color: #ffffff;
}

.highlight-icon-box {
  width: 44px;
  height: 44px;
  background-color: var(--primary-light);
  border: 1px solid rgba(204, 0, 0, 0.25);
  color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0;
  flex-shrink: 0;
}

.highlight-info h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.highlight-info p {
  font-size: 12px;
  color: var(--text-secondary);
}

/* 3. 关于我们板块 */
.about-grid-container {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 50px;
  align-items: center;
}

.about-text-content {
  grid-column: span 7;
}

.about-badge {
  font-size: 12px;
  font-weight: 800;
  color: var(--primary-color);
  letter-spacing: 2.5px;
  text-transform: uppercase;
  margin-bottom: 14px;
  display: block;
  font-family: var(--font-mono);
}

.about-text-content h3 {
  font-size: 34px;
  font-weight: 900;
  color: var(--text-primary);
  line-height: 1.3;
  margin-bottom: 24px;
  font-style: italic;
  text-transform: uppercase;
}

.about-text-content p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
  text-indent: 2em;
}

/* 工厂荣誉指标 - 极度契合 Design HTML 的高光 grid metrics */
.about-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 35px;
  border-top: 1px solid var(--border-color);
  padding-top: 30px;
}

.metric-item {
  text-align: center;
  background-color: var(--gray-bg);
  border: 1px solid var(--border-color);
  padding: 16px 8px;
  transition: var(--transition-fast);
}

.metric-item:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-glow);
}

.metric-number {
  font-size: 32px;
  font-weight: 900;
  color: var(--primary-color);
  font-family: var(--font-mono);
  line-height: 1;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 1px;
}

.metric-unit {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
}

.metric-label {
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 600;
  margin-top: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.about-image-visual {
  grid-column: span 5;
  position: relative;
}

/* 抽象工业蓝图SVG外框形式的图片占位器 */
.blueprint-box {
  width: 100%;
  aspect-ratio: 1 / 1;
  background-color: var(--dark-bg);
  border: 1px solid var(--border-color);
  border-radius: 0;
  overflow: hidden;
  position: relative;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.blueprint-grid-lines {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(204, 0, 0, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(204, 0, 0, 0.05) 1px, transparent 1px);
  background-size: 20px 20px;
  pointer-events: none;
}

.blueprint-tag {
  position: absolute;
  top: 15px;
  right: 15px;
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--primary-color);
  border: 1px solid rgba(204, 0, 0, 0.4);
  padding: 2px 6px;
  border-radius: 0;
  letter-spacing: 1.5px;
}

.factory-badge-corner {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background-color: var(--primary-color);
  color: #ffffff;
  padding: 14px 22px;
  border-radius: 0;
  box-shadow: var(--shadow-lg);
  z-index: 5;
}

.factory-badge-corner span {
  display: block;
}
.factory-badge-corner .b-1 {
  font-size: 20px;
  font-weight: 900;
  font-family: var(--font-mono);
}
.factory-badge-corner .b-2 {
  font-size: 11px;
  opacity: 0.9;
  letter-spacing: 1px;
}

/* 4. 产品展示版块 */
.product-filter-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 40px;
}

.filter-tab {
  border: 1px solid var(--border-color);
  background-color: var(--slate-bg);
  color: var(--text-secondary);
  padding: 10px 22px;
  font-size: 13px;
  font-weight: 700;
  border-radius: 0;
  cursor: pointer;
  transition: var(--transition-normal);
  letter-spacing: 0.5px;
}

.filter-tab:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
  background-color: var(--primary-light);
}

.filter-tab.active {
  background-color: var(--primary-color);
  color: #ffffff;
  border-color: var(--primary-color);
  box-shadow: 0 4px 15px rgba(204, 0, 0, 0.3);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* 产品卡片设计 (从 Design HTML 汲取高对比、细致缝合、Hover border-colors 变化) */
.product-card {
  background-color: var(--slate-bg);
  border: 1px solid var(--border-color);
  border-radius: 0;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
  position: relative;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  border-color: var(--primary-color);
}

.product-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 4px;
  background-color: var(--primary-color);
  transition: var(--transition-normal);
}

.product-card:hover::after {
  width: 100%;
}

.product-image-container {
  width: 100%;
  aspect-ratio: 1.6 / 1;
  background-color: var(--gray-bg);
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.75; /* 略微压暗卡片底图，融入暗黑调 */
  transition: var(--transition-normal);
}

.product-card:hover .product-image-container img {
  transform: scale(1.05);
  opacity: 1.0;
}

.product-category-placeholder {
  position: absolute;
  top: 12px;
  left: 12px;
  background-color: rgba(11, 12, 15, 0.9);
  color: var(--primary-color);
  font-size: 11px;
  font-weight: 800;
  padding: 4px 8px;
  border-radius: 0;
  border-left: 2px solid var(--primary-color);
  z-index: 5;
  letter-spacing: 0.5px;
}

.tech-illustration {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  background: radial-gradient(circle at 50% 50%, rgba(17, 18, 23, 0.75) 0%, rgba(14, 16, 20, 0.98) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.tech-illustration svg {
  color: rgba(204, 0, 0, 0.12);
  max-width: 55%;
  max-height: 55%;
}

.product-info {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.product-title {
  font-size: 17px;
  font-weight: 900;
  color: var(--text-primary);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.product-tag {
  background-color: var(--primary-light);
  color: var(--primary-color);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 900;
  padding: 1px 6px;
  border: 1px solid rgba(204, 0, 0, 0.2);
}

.product-description {
  font-size: 13.5px;
  color: var(--text-secondary);
  margin-bottom: 18px;
  line-height: 1.5;
  flex-grow: 1;
}

/* 行业高标硬核级参数底盘 */
.product-specs {
  background-color: var(--gray-bg);
  border: 1px solid var(--border-color);
  border-radius: 0;
  padding: 12px;
  margin-bottom: 18px;
}

.spec-row {
  display: flex;
  justify-content: space-between;
  font-size: 11.5px;
  line-height: 1.8;
  border-bottom: 1px dashed var(--border-color);
}

.spec-row:last-child {
  border-bottom: none;
}

.spec-name {
  color: var(--text-light);
}

.spec-value {
  color: var(--text-primary);
  font-weight: 700;
}

.product-action-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-color);
  padding-top: 15px;
}

.product-view-btn {
  font-size: 12.5px;
  color: var(--primary-color);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 4px;
}

.product-view-btn:hover {
  color: #ff3333;
}

.product-availability {
  font-size: 10.5px;
  color: #10B981;
  background-color: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  padding: 2px 8px;
  border-radius: 0;
  font-weight: 700;
}

/* 5. 解决方案版块 */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.solution-card {
  background-color: var(--slate-bg);
  border-left: 4px solid var(--primary-color);
  border-top: 1px solid var(--border-color);
  border-right: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  border-radius: 0;
  box-shadow: var(--shadow-sm);
  padding: 32px;
  transition: var(--transition-normal);
  display: flex;
  gap: 24px;
}

.solution-card:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  background-color: var(--gray-bg);
}

.solution-icon-wrapper {
  width: 52px;
  height: 52px;
  border-radius: 0;
  background-color: var(--primary-light);
  color: var(--primary-color);
  border: 1px solid rgba(204, 0, 0, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.solution-content h3 {
  font-size: 18px;
  font-weight: 950;
  color: var(--text-primary);
  margin-bottom: 12px;
  text-transform: uppercase;
}

.solution-content p {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 18px;
}

.solution-features-list {
  list-style: none;
  font-size: 12.5px;
  color: var(--text-primary);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px 16px;
}

.solution-feature-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.solution-feature-item svg {
  color: var(--primary-color);
  flex-shrink: 0;
}

/* 6. 联系我们 / 底部版块 (完全遵守 Design HTML 的纯曜石深色背景和高对比度边框布局) */
.contact-section-container {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 40px;
}

.contact-info-panel {
  grid-column: span 5;
}

.contact-info-panel h3 {
  font-size: 26px;
  font-weight: 900;
  margin-bottom: 18px;
  border-bottom: 2px solid #000000;
  padding-bottom: 12px;
  font-style: italic;
  text-transform: uppercase;
}

.contact-motto {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.6;
}

.contact-detail-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  list-style: none;
}

.contact-detail-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  border: 1px solid var(--border-color);
  padding: 14px;
  background-color: var(--slate-bg);
  transition: var(--transition-fast);
}

.contact-detail-item:hover {
  border-color: var(--primary-color);
}

.contact-detail-icon {
  width: 40px;
  height: 40px;
  background-color: var(--primary-light);
  border: 1px solid rgba(204, 0, 0, 0.25);
  color: var(--primary-color);
  border-radius: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-detail-text h5 {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-light);
  margin-bottom: 3px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.contact-detail-text p {
  font-size: 14.5px;
  color: var(--text-primary);
  font-weight: 700;
}

.contact-detail-text a:hover {
  color: var(--primary-color);
}

.contact-advantage-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 35px;
}

.advantage-badge {
  background-color: var(--primary-light);
  border: 1px solid rgba(204, 0, 0, 0.3);
  color: #ffffff;
  font-size: 11.5px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 0;
}

.contact-interactive-column {
  grid-column: span 7;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

/* 地图模块插槽 - 精美抽象表达 */
.map-widget-box {
  background-color: var(--slate-bg);
  border: 1px solid var(--border-color);
  border-radius: 0;
  padding: 20px;
  display: flex;
  flex-direction: column;
}

.map-widget-box h4 {
  font-size: 14px;
  font-weight: 800;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.map-display-iframe-placeholder {
  flex-grow: 1;
  background-color: var(--gray-bg);
  border: 1px solid var(--border-color);
  border-radius: 0;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: 16px;
  text-align: center;
  aspect-ratio: 1.2 / 1;
}

.map-text {
  font-size: 11.5px;
  color: var(--text-light);
  margin-top: 6px;
}

/* 微信或咨询卡 */
.wechat-card-box {
  background-color: var(--slate-bg);
  border: 1px solid var(--border-color);
  border-radius: 0;
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.wechat-card-box h4 {
  font-size: 14px;
  font-weight: 800;
  margin-bottom: 12px;
  width: 100%;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.wechat-qr-wrapper {
  background-color: #ffffff; /* 二维码区域保持纯白底，确保手机100%可识别扫码转化 */
  padding: 10px;
  border-radius: 0;
  width: 144px;
  height: 144px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 10px 0;
  position: relative;
  border: 1px solid var(--border-color);
}

.wechat-qr-wrapper img {
  width: 100%;
  height: 100%;
}

.wechat-scan-tip {
  font-size: 11.5px;
  color: var(--text-secondary);
  max-width: 180px;
  line-height: 1.5;
}

/* 页脚版权与链接 - (精确对齐 Design HTML footer 14 h, text[10px]) */
.site-footer-bar {
  background-color: #000000;
  border-top: var(--border-thick);
  padding: 24px 0;
  color: var(--text-light);
  font-size: 11.5px;
}

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

.footer-left-copyright p {
  display: flex;
  align-items: center;
  gap: 15px;
  flex-wrap: wrap;
}

.footer-right-seo-link a {
  color: var(--text-light);
  font-weight: 700;
}

.footer-right-seo-link a:hover {
  color: #ffffff;
}

/* 7. 手机端 / 响应式适配 */

@media (max-width: 1024px) {
  .logo-title {
    font-size: 18px;
  }
  .nav-menu {
    gap: 20px;
  }
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 991px) {
  .section {
    padding: 70px 0;
  }
  .section-header {
    margin-bottom: 40px;
  }
  .section-header h2 {
    font-size: 28px;
  }
  
  /* 导航栏 */
  .nav-menu {
    display: none;
    position: fixed;
    top: 85px;
    left: 0;
    width: 100%;
    background-color: var(--slate-bg); /* 改用深色底色，避免白幕刺眼 */
    flex-direction: column;
    padding: 30px;
    gap: 20px;
    box-shadow: var(--shadow-lg);
    border-top: 1px solid var(--border-color);
  }
  
  .nav-menu.active {
    display: flex;
  }

  .nav-right-phone {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  /* Slider */
  .hero-slider-section {
    height: 480px;
  }
  .slide h1 {
    font-size: 32px;
  }
  .slide p {
    font-size: 14.5px;
  }
  
  /* Features */
  .highlights-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  /* About us */
  .about-grid-container {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .about-text-content {
    grid-column: span 1;
  }
  .about-image-visual {
    grid-column: span 1;
    max-width: 480px;
    margin: 20px auto 0 auto;
  }

  /* Solutions */
  .solutions-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  /* Contact section */
  .contact-section-container {
    grid-template-columns: 1fr;
    gap: 35px;
  }
  .contact-info-panel {
    grid-column: span 1;
  }
  .contact-interactive-column {
    grid-column: span 1;
  }
}

@media (max-width: 640px) {
  .logo-icon {
    width: 90px;
    height: 22px;
  }
  .logo-title {
    font-size: 16px;
  }
  .logo-subtitle {
    letter-spacing: 1.5px;
  }
  
  .hero-slider-section {
    height: 420px;
  }
  .slide h1 {
    font-size: 22px;
    margin-bottom: 12px;
  }
  .slide p {
    font-size: 13px;
    margin-bottom: 24px;
  }
  .slide-badge {
    margin-bottom: 14px;
    padding: 3px 10px;
    font-size: 10px;
  }
  .btn {
    padding: 10px 20px;
    font-size: 13px;
  }
  
  /* highlights */
  .highlights-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  /* Products */
  .products-grid {
    grid-template-columns: 1fr;
  }
  
  /* Solutions */
  .solution-card {
    flex-direction: column;
    padding: 24px;
  }
  .solution-features-list {
    grid-template-columns: 1fr;
  }
  
  /* contact sub-columns */
  .contact-interactive-column {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  /* footer */
  .footer-bar-container {
    flex-direction: column;
    text-align: center;
    gap: 15px;
  }
}

/* 导航栏 hamburger active 变形 */
.hamburger.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.hamburger.active span:nth-child(2) {
  opacity: 0;
}
.hamburger.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}