/* ============================================
   拉萨亚太企业管理有限公司官网 - 全局样式
   设计风格：现代专业 + 传统稳重
   ============================================ */

/* ============================================
   1. CSS 变量系统 (设计令牌)
   ============================================ */
:root {
  /* 颜色系统 */
  --color-primary: #075985;          /* 高原蓝 - 主色调 */
  --color-secondary: #B91C1C;        /* 藏红 - 辅助/强调色 */
  --color-accent: #FACC15;           /* 经幡黄 - 高光色 */
  --color-success: #15803D;          /* 松柏绿 - 成功色 */
  --color-warning: #C2410C;          /* 赤土橙 - 警示色 */
  --color-bg-light: #F8FAFC;         /* 雪山白 - 背景色 */
  --color-white: #FFFFFF;            /* 纯白 - 容器背景 */
  --color-text-dark: #0F172A;        /* 深靛青 - 主文本 */
  --color-text-gray: #475569;        /* 石板灰 - 副文本 */
  --color-text-light: #94A3B8;       /* 浅灰文字 - 辅助文本 */
  --color-border: #E2E8F0;           /* 边框色 */
  --color-shadow: rgba(15, 23, 42, 0.08); /* 阴影色 */

  /* 字体系统 */
  --font-family-sans: 'Noto Sans SC', 'Source Han Sans SC', 'Microsoft YaHei', 'PingFang SC', 'SimHei', sans-serif;
  --font-family-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', serif;
  --font-size-h1: 48px;
  --font-size-h2: 32px;
  --font-size-h3: 24px;
  --font-size-h4: 18px;
  --font-size-body: 16px;
  --font-size-small: 14px;
  --font-size-xs: 12px;

  /* 字重 */
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* 间距系统 */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-2xl: 64px;

  /* 圆角系统 */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* 阴影系统 */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.18);

  /* 过渡 */
  --transition-fast: 0.2s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;

  /* 响应式断点 */
  --breakpoint-mobile: 480px;
  --breakpoint-tablet: 768px;
  --breakpoint-desktop: 1024px;
  --breakpoint-wide: 1440px;
}

/* ============================================
   2. 重置样式和基础设置
   ============================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-body);
  line-height: 1.6;
  color: var(--color-text-dark);
  background-color: var(--color-bg-light);
}

/* ============================================
   3. 排版系统
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: 1.4;
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary);
}

h1 {
  font-size: var(--font-size-h1);
  margin-bottom: var(--spacing-md);
}

h2 {
  font-size: var(--font-size-h2);
  margin-bottom: var(--spacing-md);
}

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

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

p {
  margin-bottom: var(--spacing-sm);
  line-height: 1.8;
  color: var(--color-text-gray);
}

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

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

strong, b {
  font-weight: var(--font-weight-bold);
  color: var(--color-text-dark);
}

/* ============================================
   4. 容器和布局
   ============================================ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

.container-lg {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

.container-sm {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

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

.section-lg {
  padding: var(--spacing-2xl) 0;
}

.section-sm {
  padding: var(--spacing-lg) 0;
}

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

/* ============================================
   5. Grid 布局系统
   ============================================ */
.grid {
  display: grid;
  gap: var(--spacing-md);
}

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

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

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

.grid-auto {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

/* ============================================
   6. Flexbox 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-col {
  display: flex;
  flex-direction: column;
}

.flex-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

/* ============================================
   7. 按钮样式
   ============================================ */
.btn {
  display: inline-block;
  padding: 12px 32px;
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
}

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

.btn-primary:hover {
  background-color: #064166;
  box-shadow: var(--shadow-lg);
  text-decoration: none;
}

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

.btn-secondary:hover {
  background-color: #8A1010;
  box-shadow: var(--shadow-lg);
  text-decoration: none;
}

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

.btn-outline:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
  text-decoration: none;
}

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

.btn-success:hover {
  background-color: #166534;
  box-shadow: var(--shadow-lg);
  text-decoration: none;
}

.btn-lg {
  padding: 16px 48px;
  font-size: 18px;
}

.btn-sm {
  padding: 8px 16px;
  font-size: var(--font-size-small);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ============================================
   8. 卡片组件
   ============================================ */
.card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

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

.card-header {
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--color-bg-light);
}

.card-body {
  padding: var(--spacing-md) 0;
}

.card-footer {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-bg-light);
}

/* ============================================
   9. 导航栏样式
   ============================================ */
.navbar {
  background-color: rgba(255, 255, 255, 0.96);
  color: var(--color-text-dark);
  padding: var(--spacing-sm) 0;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  border-bottom: 1px solid rgba(7, 89, 133, 0.12);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
  backdrop-filter: blur(6px);
}

.navbar-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-logo {
  font-size: 24px;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.navbar-logo:hover {
  color: var(--color-secondary);
  text-decoration: none;
}

.navbar-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  margin: 0;
  padding: 0;
}

.navbar-item {
  position: relative;
}

.navbar-link {
  color: var(--color-text-dark);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  padding: var(--spacing-xs) var(--spacing-sm);
  transition: color var(--transition-fast);
  position: relative;
}

.navbar-link:hover,
.navbar-link.active {
  color: var(--color-secondary);
}

.navbar-submenu {
  position: absolute;
  top: 100%;
  left: 0;
  background-color: var(--color-white);
  min-width: 200px;
  list-style: none;
  margin: 0;
  padding: var(--spacing-xs) 0;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-fast);
  margin-top: var(--spacing-xs);
}

.navbar-item:hover .navbar-submenu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.navbar-submenu-item {
  padding: var(--spacing-xs) var(--spacing-md);
}

.navbar-submenu-link {
  color: var(--color-text-dark);
  text-decoration: none;
  display: block;
  padding: var(--spacing-xs) 0;
  transition: color var(--transition-fast);
}

.navbar-submenu-link:hover {
  color: var(--color-secondary);
  padding-left: var(--spacing-xs);
}

/* 页面内容顶部留白（固定导航栏） */
body {
  padding-top: 70px;
}

/* ============================================
   10. 页脚样式
   ============================================ */
.footer {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-xl) 0 var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

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

.footer-section h4 {
  color: var(--color-secondary);
  margin-bottom: var(--spacing-sm);
}

.footer-section ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-section li {
  margin-bottom: var(--spacing-xs);
}

.footer-section a {
  color: var(--color-white);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-section a:hover {
  color: var(--color-secondary);
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-md);
  text-align: center;
  color: rgba(255, 255, 255, 0.95);
  font-size: var(--font-size-small);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.95);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
}

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

/* ============================================
   11. 英雄区域 (Hero Section)
   ============================================ */
.hero {
  --hero-overlay: linear-gradient(120deg, rgba(7, 89, 133, 0.88) 0%, rgba(7, 89, 133, 0.78) 58%, rgba(185, 28, 28, 0.62) 100%);
  background: var(--hero-overlay), var(--hero-image, linear-gradient(135deg, #0f172a, #1e293b));
  background-size: cover;
  background-position: center;
  color: var(--color-white);
  padding: calc(var(--spacing-2xl) + 32px) var(--spacing-sm);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 10px;
  background: repeating-linear-gradient(
    90deg,
    rgba(250, 204, 21, 0.8) 0px,
    rgba(250, 204, 21, 0.8) 24px,
    rgba(7, 89, 133, 0.9) 24px,
    rgba(7, 89, 133, 0.9) 32px,
    rgba(185, 28, 28, 0.8) 32px,
    rgba(185, 28, 28, 0.8) 40px
  );
  z-index: 1;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 30%, rgba(250, 204, 21, 0.08), transparent 40%),
              radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.1), transparent 35%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.hero h1 {
  color: var(--color-white);
  font-size: 52px;
  margin-bottom: var(--spacing-md);
}

.hero p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 18px;
  margin-bottom: var(--spacing-lg);
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-start;
  flex-wrap: wrap;
  margin-top: var(--spacing-md);
}

.hero-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-lg);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
}

.hero-stat {
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.hero-stat h4 {
  color: var(--color-accent);
  margin-bottom: var(--spacing-xs);
}

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

.hero.center .hero-grid {
  grid-template-columns: 1fr;
}

/* ============================================
   12. 特性区域 (Features Section)
   ============================================ */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.feature-item {
  text-align: center;
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  background-color: var(--color-bg-light);
  transition: all var(--transition-normal);
}

.feature-item:hover {
  background-color: var(--color-white);
  box-shadow: var(--shadow-lg);
  transform: translateY(-8px);
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-md);
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: var(--color-white);
}

.feature-item h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.feature-item p {
  color: var(--color-text-gray);
  font-size: var(--font-size-small);
}

/* ============================================
   13. 服务卡片
   ============================================ */
.service-card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

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

.service-card-image {
  width: 100%;
  height: 240px;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

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

.service-card-content {
  padding: var(--spacing-md);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.service-card h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  flex-grow: 1;
}

.service-card p {
  color: var(--color-text-gray);
  font-size: var(--font-size-small);
  margin-bottom: var(--spacing-md);
}

.service-card-link {
  color: var(--color-secondary);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.service-card-link:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

/* ============================================
   13B. 高原定制组件
   ============================================ */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--color-accent);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: var(--font-size-small);
}

.eyebrow::before {
  content: '';
  width: 24px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-secondary));
  border-radius: 999px;
}

.section-heading {
  max-width: 900px;
  margin: 0 auto var(--spacing-xl);
  text-align: left;
}

.section-heading h2 {
  margin-top: var(--spacing-xs);
}

.section-note {
  color: var(--color-text-gray);
  margin-top: var(--spacing-xs);
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  background: rgba(7, 89, 133, 0.08);
  border: 1px solid rgba(7, 89, 133, 0.18);
  border-radius: 999px;
  color: var(--color-primary);
  font-size: var(--font-size-small);
  gap: var(--spacing-xs);
}

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

.kpi-card {
  background: var(--color-white);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.kpi-card h3 {
  margin-bottom: var(--spacing-xs);
  color: var(--color-secondary);
}

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

.service-board {
  position: relative;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.service-board::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--color-secondary), var(--color-primary), var(--color-accent));
}

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

.service-board .pill {
  background: rgba(185, 28, 28, 0.08);
  border-color: rgba(185, 28, 28, 0.2);
  color: var(--color-secondary);
}

.service-board h3 {
  margin: var(--spacing-sm) 0 var(--spacing-xs);
  color: var(--color-primary);
}

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

.service-board ul {
  list-style: none;
  padding: 0;
  margin: var(--spacing-md) 0 0;
}

.service-board li {
  display: flex;
  gap: var(--spacing-xs);
  align-items: flex-start;
  color: var(--color-text-gray);
  margin-bottom: var(--spacing-xs);
}

.service-board li::before {
  content: '';
  width: 8px;
  height: 8px;
  margin-top: 6px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-accent) 0%, var(--color-secondary) 100%);
  flex-shrink: 0;
}

.service-board a {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-sm);
  color: var(--color-secondary);
  font-weight: var(--font-weight-semibold);
}

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

.timeline-step {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  position: relative;
  box-shadow: var(--shadow-sm);
}

.timeline-step::before {
  content: attr(data-step);
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  color: var(--color-secondary);
  font-weight: var(--font-weight-bold);
  font-size: 18px;
  opacity: 0.8;
}

.timeline-step h4 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

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

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

.case-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.case-card .case-body {
  padding: var(--spacing-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.case-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  color: var(--color-text-light);
  font-size: var(--font-size-small);
}

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

.team-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.team-card h3 {
  margin: 0;
}

.team-role {
  color: var(--color-secondary);
  font-weight: var(--font-weight-semibold);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.tag {
  padding: 4px 10px;
  background: rgba(7, 89, 133, 0.08);
  border-radius: 999px;
  color: var(--color-primary);
  font-size: var(--font-size-small);
}

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

.news-article {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.news-article time {
  color: var(--color-text-light);
  font-size: var(--font-size-small);
}

.news-article a {
  color: var(--color-secondary);
  font-weight: var(--font-weight-semibold);
}

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

.contact-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
}

.info-line {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--color-text-gray);
  margin-bottom: var(--spacing-sm);
}

.banner-note {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  background: rgba(250, 204, 21, 0.15);
  border: 1px solid rgba(250, 204, 21, 0.5);
  color: #92400e;
  border-radius: var(--radius-md);
  padding: 6px 12px;
  font-size: var(--font-size-small);
}

.cta-section {
  background: linear-gradient(120deg, #075985 0%, #0a4c76 60%, #8A1010 100%);
  color: var(--color-white);
  padding: var(--spacing-2xl) var(--spacing-lg);
  text-align: center;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.cta-section h2 {
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
}

.cta-section p {
  color: rgba(255, 255, 255, 0.92);
  margin-bottom: var(--spacing-lg);
}
/* ============================================
   14. 统计数据区域
   ============================================ */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  text-align: center;
}

.stat-item h3 {
  color: var(--color-secondary);
  font-size: 48px;
  margin-bottom: var(--spacing-xs);
}

.stat-item p {
  color: var(--color-text-gray);
  font-size: var(--font-size-small);
}

/* ============================================
   15. 表单样式
   ============================================ */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-dark);
}

.form-control {
  width: 100%;
  padding: 12px var(--spacing-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-body);
  font-family: var(--font-family-sans);
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(7, 89, 133, 0.14);
}

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

/* ============================================
   16. 响应式设计
   ============================================ */

/* 平板设备 */
@media (max-width: 1024px) {
  .container {
    padding: 0 var(--spacing-md);
  }

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

  .navbar-menu {
    gap: var(--spacing-md);
  }

  .hero {
    padding: var(--spacing-2xl) var(--spacing-md);
  }

  .hero h1 {
    font-size: 40px;
  }

  .hero p {
    font-size: 18px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
}

/* 手机设备 */
@media (max-width: 768px) {
  :root {
    --font-size-h1: 32px;
    --font-size-h2: 24px;
    --font-size-h3: 18px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
  }

  body {
    padding-top: 60px;
  }

  .container {
    padding: 0 var(--spacing-sm);
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .navbar {
    padding: var(--spacing-xs) 0;
  }

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

  .navbar-menu {
    flex-direction: column;
    gap: var(--spacing-xs);
    width: 100%;
    margin-top: var(--spacing-sm);
  }

  .navbar-submenu {
    position: static;
    opacity: 0;
    visibility: hidden;
    max-height: 0;
    overflow: hidden;
    transition: all var(--transition-fast);
  }

  .navbar-item:hover .navbar-submenu {
    opacity: 1;
    visibility: visible;
    max-height: 500px;
  }

  .hero {
    padding: var(--spacing-xl) var(--spacing-sm);
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero p {
    font-size: 16px;
  }

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

  .hero-buttons .btn {
    width: 100%;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: var(--spacing-lg) 0;
  }

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

  .section-heading {
    margin-bottom: var(--spacing-lg);
  }
}

/* 超小屏幕 */
@media (max-width: 480px) {
  :root {
    --font-size-h1: 24px;
    --font-size-h2: 18px;
    --font-size-h3: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 24px;
  }

  h1 {
    font-size: var(--font-size-h1);
  }

  .navbar-logo {
    font-size: 18px;
  }

  .btn {
    padding: 10px 20px;
    font-size: var(--font-size-small);
  }

  .btn-lg {
    padding: 12px 24px;
    font-size: var(--font-size-body);
  }
}

/* ============================================
   17. 动画
   ============================================ */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ============================================
   18. 实用类
   ============================================ */
.text-center {
  text-align: center;
}

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

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

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

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

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

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

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

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

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

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

.mt-0 { margin-top: 0; }
.mt-xs { margin-top: var(--spacing-xs); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.p-0 { padding: 0; }
.p-xs { padding: var(--spacing-xs); }
.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }

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

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

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

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

.hidden {
  display: none !important;
}

.visible {
  display: block !important;
}

.opacity-50 {
  opacity: 0.5;
}

.opacity-75 {
  opacity: 0.75;
}

/* ============================================
   19. 打印样式
   ============================================ */
@media print {
  .navbar,
  .footer,
  .no-print {
    display: none;
  }

  body {
    padding-top: 0;
  }

  a {
    color: var(--color-primary);
  }
}