/* ============================================
   昌都市元泰建筑工程公司官网 - 全局样式
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;600;700&display=swap');
@import 'variables.css';

/* ============ 基础样式 ============ */

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

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

body {
  font-family: 'Noto Sans SC', var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--text-color);
  background-color: var(--background-color);
  overflow-x: hidden;
  padding-top: 88px;
}

/* ============ 排版 ============ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-md);
  color: var(--text-color);
}

h1 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-lg);
}

h2 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-lg);
}

h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
}

h4 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-md);
}

h5 {
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-sm);
}

h6 {
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-sm);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--text-light);
}

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

a:hover {
  color: var(--secondary-color);
}

ul, ol {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

li {
  margin-bottom: var(--spacing-sm);
}

/* ============ 导航栏 ============ */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(17, 24, 39, 0.08);
  box-shadow: var(--shadow-sm);
  z-index: var(--z-fixed);
  transition: transform var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base);
}

.navbar.scrolled {
  background-color: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-lg);
}

.navbar.transparent {
  background-color: transparent;
  box-shadow: var(--shadow-none);
  border-bottom-color: transparent;
}

.navbar-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--spacing-sm) var(--container-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--primary-color);
  letter-spacing: 0.5px;
}

.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--border-radius-md);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
}

.nav-menu {
  list-style: none;
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  margin: 0;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-weight: var(--font-weight-medium);
  color: var(--text-color);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-base);
}

.nav-link:hover,
.nav-link:focus,
.nav-link.active {
  color: var(--primary-color);
  background-color: rgba(44, 90, 160, 0.08);
}

.nav-link .tag {
  font-size: 11px;
  padding: 2px 6px;
  background-color: rgba(44, 90, 160, 0.12);
  color: var(--primary-color);
  border-radius: var(--border-radius-full);
  font-weight: var(--font-weight-medium);
}

.dropdown-toggle::after {
  content: '▾';
  font-size: 10px;
  transition: transform var(--transition-base);
}

.dropdown:hover .dropdown-toggle::after,
.dropdown-menu.active ~ .dropdown-toggle::after {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + var(--spacing-sm));
  left: 0;
  min-width: 220px;
  background-color: #fff;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  border: 1px solid rgba(17, 24, 39, 0.08);
  padding: var(--spacing-sm) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
}

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

.dropdown-menu li {
  list-style: none;
}

.dropdown-menu a {
  display: block;
  padding: var(--spacing-sm) var(--spacing-lg);
  color: var(--text-color);
  transition: all var(--transition-base);
  border-left: 3px solid transparent;
}

.dropdown-menu a:hover {
  color: var(--primary-color);
  background-color: rgba(44, 90, 160, 0.08);
  border-left-color: var(--secondary-color);
}

.dropdown-menu a.active {
  color: var(--primary-color);
  background-color: rgba(44, 90, 160, 0.12);
  border-left-color: var(--secondary-color);
  font-weight: var(--font-weight-semibold);
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.navbar-contact {
  display: flex;
  flex-direction: column;
  font-size: var(--font-size-sm);
  color: var(--text-light);
  line-height: 1.4;
}

.navbar-contact strong {
  color: var(--primary-color);
  font-weight: var(--font-weight-bold);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.hamburger span {
  display: block;
  width: 26px;
  height: 3px;
  background-color: var(--text-color);
  border-radius: var(--border-radius-full);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

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

.hamburger.active span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* ============ 全局板块 ============ */

section {
  padding: var(--spacing-4xl) 0;
}

.section-header {
  max-width: 760px;
  margin: 0 auto var(--spacing-3xl);
  text-align: center;
}

.section-header .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 4px 12px;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--primary-color);
  background-color: rgba(44, 90, 160, 0.1);
  border-radius: var(--border-radius-full);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.section-header h2 {
  font-size: var(--font-size-2xl);
  color: var(--gray-900);
  margin-bottom: var(--spacing-md);
}

.section-header p {
  color: var(--text-light);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-light);
}

.highlight-text {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--primary-dark);
}

.content-divider {
  width: 120px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  border-radius: var(--border-radius-full);
  margin: var(--spacing-lg) auto;
}

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

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--spacing-lg);
}

.metric-card {
  background-color: var(--background-light);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  text-align: center;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.metric-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.metric-card h3 {
  font-size: 40px;
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
}

.metric-card p {
  color: var(--text-light);
  margin-bottom: 0;
}

.feature-grid {
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.feature-card {
  background-color: var(--background-light);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  border-top: 4px solid var(--primary-color);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.feature-card:hover {
  transform: translateY(-8px);
  border-top-color: var(--secondary-color);
  box-shadow: var(--shadow-lg);
}

.feature-card h3 {
  margin-bottom: 0;
}

.feature-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.feature-card ul li {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  color: var(--text-light);
}

.feature-card ul li::before {
  content: '•';
  color: var(--secondary-color);
  font-size: var(--font-size-lg);
  line-height: 1;
}

.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--spacing-md);
}

.image-grid img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

.cta-banner {
  position: relative;
  overflow: hidden;
  border-radius: var(--border-radius-xl);
  background: linear-gradient(120deg, var(--primary-dark), var(--primary-color));
  padding: var(--spacing-3xl);
  color: white;
  display: grid;
  grid-template-columns: 2fr 1fr;
  align-items: center;
  gap: var(--spacing-3xl);
  box-shadow: var(--shadow-lg);
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -10%;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
}

.cta-content {
  position: relative;
  z-index: 1;
}

.cta-actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.cta-actions p {
  margin: 0;
  color: rgba(255, 255, 255, 0.7);
}

.cta-actions .btn-outline {
  color: white;
  border-color: rgba(255, 255, 255, 0.6);
}

.cta-actions .btn-outline:hover {
  background-color: rgba(255, 255, 255, 0.12);
}

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

.page-section-pattern {
  background: linear-gradient(180deg, rgba(44, 90, 160, 0.06), rgba(255, 255, 255, 0));
}

/* ============ 页面级组件 ============ */

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--text-lighter);
  margin-bottom: var(--spacing-xl);
}

.breadcrumb a {
  color: var(--text-light);
}

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

.breadcrumb span {
  color: var(--text-color);
}

.page-hero {
  position: relative;
  padding: var(--spacing-4xl) 0;
  color: white;
  border-radius: 0 0 var(--border-radius-xl) var(--border-radius-xl);
  overflow: hidden;
}

.page-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(17, 24, 39, 0.8), rgba(17, 24, 39, 0.3));
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.page-hero-title {
  font-size: 44px;
  margin-bottom: var(--spacing-md);
  color: #fff;
}

.page-hero-subtitle {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.85);
  max-width: 760px;
}

.page-hero-meta {
  margin-top: var(--spacing-2xl);
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
}

.page-hero-meta .meta-item {
  display: flex;
  flex-direction: column;
  font-size: var(--font-size-sm);
}

.page-hero-meta .meta-item span {
  color: rgba(255, 255, 255, 0.7);
}

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--spacing-3xl);
}

.page-layout.with-sidebar {
  grid-template-columns: 280px minmax(0, 1fr);
}

.page-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  position: sticky;
  top: 120px;
  align-self: start;
}

.sidebar-card {
  background-color: var(--background-light);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(17, 24, 39, 0.08);
}

.sidebar-card h3 {
  margin-bottom: var(--spacing-md);
}

.sidebar-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.sidebar-list li a {
  color: var(--text-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-md);
  transition: background-color var(--transition-base), color var(--transition-base);
}

.sidebar-list li a:hover {
  color: var(--primary-color);
  background-color: rgba(44, 90, 160, 0.08);
}

.sidebar-contacts {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
}

.sidebar-contacts strong {
  color: var(--primary-color);
}

.page-main {
  background-color: #fff;
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-3xl);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(17, 24, 39, 0.08);
}

.page-main .section-header {
  text-align: left;
  margin: 0 0 var(--spacing-2xl);
}

.rich-text {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  color: var(--text-light);
}

.rich-text h2,
.rich-text h3 {
  color: var(--gray-900);
  margin-top: var(--spacing-2xl);
}

.rich-text ul,
.rich-text ol {
  margin-left: var(--spacing-lg);
  color: var(--text-light);
}

.rich-text blockquote {
  border-left: 4px solid var(--primary-color);
  padding-left: var(--spacing-lg);
  color: var(--text-color);
  font-style: italic;
  background-color: rgba(44, 90, 160, 0.06);
  border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
}

.data-highlight {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-2xl) 0;
}

.data-card {
  background-color: var(--background-light);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
}

.data-card h4 {
  margin-bottom: var(--spacing-sm);
  color: var(--primary-color);
}

.stepper {
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  margin: var(--spacing-2xl) 0;
}

.step-item {
  background-color: var(--background-light);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  border-top: 4px solid var(--secondary-color);
}

.step-item span {
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--secondary-color);
  margin-bottom: var(--spacing-sm);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.timeline {
  position: relative;
  padding-left: var(--spacing-3xl);
  margin: var(--spacing-2xl) 0;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 18px;
  width: 2px;
  background-color: rgba(44, 90, 160, 0.2);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--spacing-xl);
  padding-left: var(--spacing-lg);
}

.timeline-item::before {
  content: '';
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--secondary-color);
  left: -32px;
  top: 6px;
  box-shadow: 0 0 0 6px rgba(255, 140, 0, 0.2);
}

.timeline-item h4 {
  margin-bottom: var(--spacing-sm);
}

.timeline-item span {
  font-size: var(--font-size-sm);
  color: var(--text-lighter);
}

.partner-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--spacing-lg);
  align-items: center;
}

.partner-card {
  background-color: #fff;
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(17, 24, 39, 0.06);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 120px;
}

.partner-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.news-list {
  display: grid;
  gap: var(--spacing-lg);
}

.news-card {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--spacing-lg);
  align-items: center;
  background-color: var(--background-light);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.news-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.news-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.news-card-content {
  padding: var(--spacing-lg);
}

.news-card-content span {
  display: inline-block;
  font-size: var(--font-size-sm);
  color: var(--text-lighter);
  margin-bottom: var(--spacing-sm);
}

.news-card-content h3 {
  margin-bottom: var(--spacing-sm);
}

.news-card-content p {
  margin-bottom: var(--spacing-sm);
}

.news-card-content a {
  font-weight: var(--font-weight-medium);
}

/* ============ 首页专用组件 ============ */

.home-hero {
  position: relative;
  padding: var(--spacing-4xl) 0 var(--spacing-4xl);
  overflow: hidden;
  background: linear-gradient(135deg, rgba(44, 90, 160, 0.1), rgba(255, 255, 255, 0));
}

.home-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('../images/YgvjwOtRMflH.png') no-repeat center / cover;
  opacity: 0.08;
}

.home-hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: var(--spacing-4xl);
  align-items: center;
}

.hero-text {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 6px 16px;
  background: rgba(255, 140, 0, 0.15);
  color: var(--secondary-color);
  border-radius: var(--border-radius-full);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.hero-text h1 {
  font-size: 50px;
  line-height: 1.15;
  color: var(--gray-900);
}

.hero-text p {
  font-size: var(--font-size-lg);
  color: var(--text-light);
  max-width: 620px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
  align-items: center;
}

.hero-actions .btn {
  min-width: 180px;
}

.hero-actions .contact-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: var(--font-size-sm);
  color: var(--text-light);
}

.hero-actions .contact-meta strong {
  font-size: var(--font-size-lg);
  color: var(--primary-color);
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.hero-meta-item {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
  padding: var(--spacing-md);
  border-radius: var(--border-radius-lg);
  background-color: #fff;
  box-shadow: var(--shadow-md);
}

.hero-meta-item span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: var(--border-radius-full);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  font-size: 22px;
}

.hero-meta-item div {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.hero-meta-item strong {
  color: var(--gray-900);
  font-size: var(--font-size-lg);
}

.home-hero-media {
  position: relative;
  display: grid;
  gap: var(--spacing-lg);
}

.media-primary {
  border-radius: var(--border-radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.media-primary img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

.media-overlay {
  position: absolute;
  bottom: var(--spacing-md);
  left: var(--spacing-md);
  background-color: rgba(17, 24, 39, 0.75);
  color: white;
  padding: var(--spacing-md);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(6px);
}

.media-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}

.media-gallery img {
  width: 100%;
  height: 120px;
  object-fit: cover;
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
}

.quick-stats {
  margin-top: var(--spacing-4xl);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
}

.stat-card {
  background-color: #fff;
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(17, 24, 39, 0.08);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.stat-card span {
  font-size: var(--font-size-sm);
  color: var(--text-lighter);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.stat-card strong {
  font-size: 40px;
  color: var(--primary-color);
}

.stat-card p {
  margin: 0;
  color: var(--text-light);
}

.service-showcase {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.service-intro {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.service-intro ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  color: var(--text-light);
}

.service-intro li {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.service-intro li::before {
  content: '✓';
  color: var(--secondary-color);
  font-weight: var(--font-weight-bold);
}

.service-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--spacing-lg);
}

.service-card {
  background-color: #fff;
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  border: 1px solid rgba(17, 24, 39, 0.08);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.service-card span {
  font-size: 32px;
}

.service-card h3 {
  margin-bottom: 0;
}

.service-card p {
  margin-bottom: 0;
}

.project-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.project-card {
  background-color: #fff;
  border-radius: var(--border-radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(17, 24, 39, 0.08);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.project-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.project-card-content {
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.project-card-content span {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-sm);
  color: var(--secondary-color);
  background-color: rgba(255, 140, 0, 0.15);
  padding: 4px 10px;
  border-radius: var(--border-radius-full);
  width: fit-content;
}

.project-card-content p {
  margin-bottom: 0;
}

.project-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(17, 24, 39, 0.06);
}

.certifications {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--spacing-lg);
}

.cert-card {
  background-color: #fff;
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  border: 1px solid rgba(17, 24, 39, 0.08);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.cert-card span {
  font-size: 30px;
  color: var(--primary-color);
}

.cert-card p {
  margin-bottom: 0;
}

.value-highlight {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--spacing-lg);
}

.value-card {
  background-color: rgba(44, 90, 160, 0.08);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  border: 1px solid rgba(44, 90, 160, 0.15);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.value-card strong {
  font-size: var(--font-size-xl);
  color: var(--primary-color);
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-lg);
}

.news-item-card {
  background-color: #fff;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(17, 24, 39, 0.08);
  display: flex;
  flex-direction: column;
}

.news-item-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.news-item-content {
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.news-item-content span {
  font-size: var(--font-size-sm);
  color: var(--text-lighter);
}

.news-item-content h3 {
  margin-bottom: 0;
}

.news-item-content p {
  margin-bottom: 0;
}

.news-item-content a {
  margin-top: auto;
  font-weight: var(--font-weight-medium);
}

.partner-showcase {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.partner-summary {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.partner-summary ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  color: var(--text-light);
}

.partner-summary li {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.partner-summary li::before {
  content: '•';
  color: var(--secondary-color);
  font-size: 18px;
}

.partner-logos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--spacing-lg);
}

.partner-logo-card {
  background-color: #fff;
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  border: 1px solid rgba(17, 24, 39, 0.08);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100px;
}

.footer {
  background-color: var(--gray-900);
  color: white;
  padding: var(--spacing-4xl) 0 var(--spacing-lg);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--spacing-2xl);
  max-width: var(--container-width);
  margin: 0 auto var(--spacing-2xl);
  padding: 0 var(--container-padding);
}

.footer-section h3 {
  margin-bottom: var(--spacing-md);
  color: #fff;
}

.footer-section p,
.footer-section li,
.footer-section a {
  color: rgba(255, 255, 255, 0.7);
}

.footer-section ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-section a:hover {
  color: #fff;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.contact-item {
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
}

.contact-icon {
  width: 30px;
  height: 30px;
  border-radius: var(--border-radius-full);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: var(--spacing-lg);
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
  max-width: var(--container-width);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.social-links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.social-links a {
  width: 38px;
  height: 38px;
  border-radius: var(--border-radius-full);
  background-color: rgba(255, 255, 255, 0.12);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: white;
  transition: background-color var(--transition-base);
}

.social-links a:hover {
  background-color: rgba(255, 255, 255, 0.25);
}

/* ============ 通用内容组件 ============ */

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--spacing-lg);
}

.team-card {
  background-color: #fff;
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(17, 24, 39, 0.08);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  align-items: flex-start;
}

.team-card img {
  width: 72px;
  height: 72px;
  border-radius: var(--border-radius-full);
  object-fit: cover;
  box-shadow: var(--shadow-sm);
}

.team-card span {
  font-size: var(--font-size-sm);
  color: var(--text-lighter);
}

.team-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.honor-grid,
.qualification-grid,
.faq-list,
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--spacing-lg);
}

.honor-card,
.qualification-card,
.contact-card {
  background-color: #fff;
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  border: 1px solid rgba(17, 24, 39, 0.08);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.honor-card span,
.qualification-card span,
.contact-card span {
  font-size: 32px;
  color: var(--primary-color);
}

.honor-card ul,
.qualification-card ul,
.contact-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.faq-item {
  border-radius: var(--border-radius-lg);
  border: 1px solid rgba(17, 24, 39, 0.08);
  box-shadow: var(--shadow-sm);
  background-color: var(--background-light);
  overflow: hidden;
}

.faq-question {
  padding: var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  cursor: pointer;
  font-weight: var(--font-weight-semibold);
}

.faq-answer {
  padding: 0 var(--spacing-lg) var(--spacing-lg);
  color: var(--text-light);
  display: none;
}

.faq-item.active .faq-answer {
  display: block;
}

.faq-item.active .faq-question {
  color: var(--primary-color);
}

.case-highlight {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-2xl) 0;
}

.case-card {
  background-color: #fff;
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  border: 1px solid rgba(17, 24, 39, 0.08);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.article-header {
  margin-bottom: var(--spacing-2xl);
}

.article-header span {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 4px 12px;
  background-color: rgba(44, 90, 160, 0.12);
  color: var(--primary-color);
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-sm);
}

.article-header h1 {
  margin-top: var(--spacing-lg);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
  color: var(--text-lighter);
  font-size: var(--font-size-sm);
}

.article-body {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  color: var(--text-light);
}

.article-body h2 {
  color: var(--gray-900);
  margin-top: var(--spacing-2xl);
}

.article-body img {
  width: 100%;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

.contact-grid {
  margin-top: var(--spacing-2xl);
}

.contact-card strong {
  color: var(--gray-900);
}

/* ============ 按钮样式 ============ */

.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  text-align: center;
  border: none;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background-color: var(--primary-dark);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: var(--secondary-color);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
  background-color: var(--secondary-dark);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

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

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

.btn-sm {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-lg);
}

/* ============ 容器和布局 ============ */

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
}

.row-2 {
  grid-template-columns: repeat(2, 1fr);
}

.row-3 {
  grid-template-columns: repeat(3, 1fr);
}

.row-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* ============ 卡片组件 ============ */

.card {
  background-color: var(--background-light);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: all var(--transition-base);
}

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

.card-header {
  padding: var(--spacing-lg);
  background-color: var(--primary-color);
  color: white;
}

.card-body {
  padding: var(--spacing-lg);
}

.card-footer {
  padding: var(--spacing-lg);
  background-color: var(--background-color);
  border-top: var(--border-width-thin) solid var(--border-light);
}

.card-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
}

/* ============ 表单样式 ============ */

input, textarea, select {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  border: var(--border-width-thin) solid var(--border-color);
  border-radius: var(--border-radius-md);
  background-color: var(--background-light);
  color: var(--text-color);
  transition: border-color var(--transition-base);
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(44, 90, 160, 0.1);
}

label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-color);
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

/* ============ 表格样式 ============ */

table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--spacing-lg);
}

th {
  background-color: var(--primary-color);
  color: white;
  padding: var(--spacing-md);
  text-align: left;
  font-weight: var(--font-weight-bold);
}

td {
  padding: var(--spacing-md);
  border-bottom: var(--border-width-thin) solid var(--border-light);
}

tr:hover {
  background-color: var(--background-color);
}

/* ============ 实用类 ============ */

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

.text-right {
  text-align: right;
}

.text-left {
  text-align: left;
}

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

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

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

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

.text-muted {
  color: var(--text-lighter);
}

.text-bold {
  font-weight: var(--font-weight-bold);
}

.text-italic {
  font-style: italic;
}

.text-uppercase {
  text-transform: uppercase;
}

.text-lowercase {
  text-transform: lowercase;
}

.text-capitalize {
  text-transform: capitalize;
}

/* 间距实用类 */
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

.px-0 { padding-left: 0; padding-right: 0; }
.px-1 { padding-left: var(--spacing-sm); padding-right: var(--spacing-sm); }
.px-2 { padding-left: var(--spacing-md); padding-right: var(--spacing-md); }
.px-3 { padding-left: var(--spacing-lg); padding-right: var(--spacing-lg); }

.py-0 { padding-top: 0; padding-bottom: 0; }
.py-1 { padding-top: var(--spacing-sm); padding-bottom: var(--spacing-sm); }
.py-2 { padding-top: var(--spacing-md); padding-bottom: var(--spacing-md); }
.py-3 { padding-top: var(--spacing-lg); padding-bottom: var(--spacing-lg); }

/* 显示和隐藏 */
.hidden {
  display: none;
}

.visible {
  display: block;
}

.invisible {
  visibility: hidden;
}

/* 浮动 */
.float-left {
  float: left;
}

.float-right {
  float: right;
}

.clearfix::after {
  content: '';
  display: table;
  clear: both;
}

/* 弹性布局 */
.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.flex-column {
  flex-direction: column;
}

.flex-wrap {
  flex-wrap: wrap;
}

.gap-1 { gap: var(--spacing-sm); }
.gap-2 { gap: var(--spacing-md); }
.gap-3 { gap: var(--spacing-lg); }

/* 网格布局 */
.grid {
  display: grid;
}

.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* 边框 */
.border {
  border: var(--border-width-thin) solid var(--border-color);
}

.border-top {
  border-top: var(--border-width-thin) solid var(--border-color);
}

.border-bottom {
  border-bottom: var(--border-width-thin) solid var(--border-color);
}

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

.rounded {
  border-radius: var(--border-radius-md);
}

.rounded-lg {
  border-radius: var(--border-radius-lg);
}

.rounded-full {
  border-radius: var(--border-radius-full);
}

/* 阴影 */
.shadow-sm {
  box-shadow: var(--shadow-sm);
}

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

.shadow-lg {
  box-shadow: var(--shadow-lg);
}

/* 背景颜色 */
.bg-primary {
  background-color: var(--primary-color);
  color: white;
}

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

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

.bg-white {
  background-color: white;
}

/* 宽度和高度 */
.w-full {
  width: 100%;
}

.h-full {
  height: 100%;
}

.w-auto {
  width: auto;
}

.h-auto {
  height: auto;
}

/* 位置 */
.relative {
  position: relative;
}

.absolute {
  position: absolute;
}

.fixed {
  position: fixed;
}

.sticky {
  position: sticky;
  top: 0;
}

/* 溢出 */
.overflow-hidden {
  overflow: hidden;
}

.overflow-auto {
  overflow: auto;
}

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 透明度 */
.opacity-50 {
  opacity: 0.5;
}

.opacity-75 {
  opacity: 0.75;
}

.opacity-100 {
  opacity: 1;
}

/* 光标 */
.cursor-pointer {
  cursor: pointer;
}

.cursor-default {
  cursor: default;
}

/* 禁用状态 */
.disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

/* 分隔线 */
.divider {
  border-top: var(--border-width-thin) solid var(--border-color);
  margin: var(--spacing-lg) 0;
}

/* 徽章 */
.badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  border-radius: var(--border-radius-full);
  background-color: var(--primary-color);
  color: white;
}

.badge-secondary {
  background-color: var(--secondary-color);
}

.badge-success {
  background-color: var(--success-color);
}

.badge-warning {
  background-color: var(--warning-color);
}

/* 提示框 */
.alert {
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  border-radius: var(--border-radius-md);
  border-left: 4px solid;
}

.alert-info {
  background-color: #E3F2FD;
  border-color: var(--info-color);
  color: var(--info-color);
}

.alert-success {
  background-color: #E8F5E9;
  border-color: var(--success-color);
  color: var(--success-color);
}

.alert-warning {
  background-color: #FFF3E0;
  border-color: var(--warning-color);
  color: var(--warning-color);
}

.alert-error {
  background-color: #FFEBEE;
  border-color: var(--warning-color);
  color: var(--warning-color);
}

/* 加载动画 */
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid var(--border-light);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* 脉冲动画 */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* 淡入动画 */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.fade-in {
  animation: fadeIn 0.3s ease-in;
}

/* 滑入动画 */
@keyframes slideInUp {
  from {
    transform: translateY(20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.slide-in-up {
  animation: slideInUp 0.3s ease-out;
}