/* ==================== GCDF Site - Common Styles ==================== */

/* CSS Variables */
:root {
  --primary: #00adbb;
  --primary-dark: #00A09A;
  --secondary: #F5A623;
  --secondary-dark: #E09513;
  --bg-gray: #F5F7FA;
  --bg-light: #F0F9F8;
  --text-dark: #333333;
  --text-medium: #333;
  --text-light: #999999;
  --border-color: #E5E5E5;
  --white: #FFFFFF;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --shadow-hover: 0 4px 20px rgba(0,0,0,0.12);
  --radius: 8px;
  --radius-lg: 12px;
  --max-width: 1920px;
  --header-height: 156px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  overflow-x: hidden!important;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  color: var(--text-dark);
  line-height: 1.6;
  background: #f5f5f5;
}

/* 等比缩放样式 */
html, body {
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  background-color: #f5f5f5;
  width: 100%;
}

.scale-wrapper {
  width: 1920px;
  transform-origin: left top;
  position: absolute;
  left: 0;
  top: 0;
  background-color: #f5f5f5;
}

a {
  text-decoration: none;
  color: inherit;
}

ul, ol {
  list-style: none;
}

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

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 0;
}

/* ==================== Header ==================== */
.header {
  width: 1920px;
  background: var(--primary);
  height: var(--header-height);
  /*position: sticky;*/
  top: 0;
  z-index: 1000;
  margin: 0 auto;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.header-inner {
  width: 1860px;
  margin: 0 auto;
  padding: 0 20px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--white);
  font-size: 20px;
  font-weight: 700;
}
.logo img {
  width: 350px;
}

.logo-icon {
  display: none;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0;
  flex-wrap: nowrap; /* 防止flex容器换行 */
  flex-shrink: 0; /* 防止导航容器被压缩 */
}

.nav-item {
  color: var(--white);
  padding: 0 24px;
  height: var(--header-height);
  display: flex;
  align-items: center;
  font-size: 22px;
  transition: background 0.3s;
  position: relative;
  white-space: nowrap; /* 防止文本换行 */
  flex-shrink: 0; /* 防止菜单项被压缩 */
}

.nav-item:hover,
.nav-item.active {
  background: rgba(255,255,255,0.15);
  color: #fff!important;
}

.nav-item.active, .nav-item:hover {
  border-bottom: 3px solid #fff;
}

.header-phone {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--white);
  font-size: 28px;
}

.header-phone img {
  width: 32px;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 10px;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  width: 28px;
  height: 3px;
  background: var(--white);
  transition: all 0.3s;
  border-radius: 3px;
}

/* Menu toggle active state */
.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

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

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* ==================== Page Banner ==================== */
.page-banner {
  width: 1920px;
  margin: 0 auto;
  position: relative;
}

.page-banner-content {
  width: 1920px;
}

.page-banner-content img {
  display: block;
  width: 1920px;
  margin: 0 auto;
}
/* ==================== Breadcrumb ==================== */
.breadcrumb {
  width: 1920px;
  background: #fff;
  padding: 14px 0;
  margin: 20px auto 10px auto;
}

.breadcrumb-inner {
  width: 1511px;
  margin: 0 auto;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 30px;
  color: var(--text-medium);
}

.breadcrumb-inner::before {
  content: '您当前位置：';
  color: var(--text-dark);
  font-weight: 800;
}

.breadcrumb-inner a {
  color: var(--text-medium);
  transition: color 0.3s;
}

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

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

.breadcrumb-sep {
  color: #333;
}

/* ==================== Section Title ==================== */
.section-title {
  width: 100%;
  height: 118px;
}

.section-title-content {
  width: 693px;
  height: 118px;
  margin: 0 auto;
  background: url(../images/home_page_title_bg.png) no-repeat;
  text-align: center;
  font-size: 48px;
  font-weight: bold;
  color: #2e3739;
  line-height: 123px;
}

/* ==================== Tab Navigation ==================== */
.tab-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 62px;
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}

.tab-nav-item {
  position: relative;
  padding: 14px 42px;
  font-size: 20px;
  color: var(--text-medium);
  cursor: pointer;
  border: 0;
  background: none;
  white-space: nowrap;
  border-radius: 14px;
}

.tab-nav-item:hover {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

.tab-nav-item.active {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

.tab-nav-item i {
  position: absolute;
  width: 48px;
  height: 20px;
  background-color: #ffba00;
  border-radius: 50%;
  left: 30px;
  bottom: 12px;
  z-index: 1;
  display: none;
}

.tab-nav-item span {
  position: relative;
  z-index: 2;
}

.tab-nav-item.active i, .tab-nav-item:hover i {
  display: block;
}

/* ==================== Pagination ==================== */
.pagination {
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 40px;
}

.pagination-item {
  width: 50px;
  height: 50px;
  display: flex;
  border-radius: 100%;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  color: #121212;
  margin-left: 12px;
  cursor: pointer;
  border: none;
  background-color: #e7ebef;
}

.pagination-item:hover {
  color: var(--primary);
}

.pagination-item.active {
  background: var(--primary);
  color: var(--white);
}

.pagination ul {
  font-size: 0;
  list-style-type: none;
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 40px;
}

.pagination ul li {
  display: inline-block;
  vertical-align: top;
  width: 50px;
  height: 50px;
  display: flex;
  border-radius: 100%;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  color: #121212;
  margin-left: 12px;
  cursor: pointer;
  border: none;
  background-color: #e7ebef;
}

.pagination ul li:hover {
  color: var(--primary);
}

.pagination ul li.active {
  background: var(--primary);
  color: var(--white);
}

/* ==================== Cards ==================== */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s;
}

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

/* Tag */
.tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
}

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

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

.tag-outline {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}

/* ==================== Footer ==================== */
.footer {
  background: #2D3748;
  color: var(--white);
  padding: 50px 0 20px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.footer-inner .copyright {
  text-align: center;
  font-size: 18px;
}

/* ==================== Utility Classes ==================== */
.text-center { text-align: center; }
.mt-20 { margin-top: 20px; }
.mt-40 { margin-top: 40px; }
.mt-60 { margin-top: 60px; }
.mb-20 { margin-bottom: 20px; }
.mb-40 { margin-bottom: 40px; }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-20 { gap: 20px; }
.gap-30 { gap: 30px; }

/* ==================== 移动端适配 ==================== */
@media screen and (max-width: 1024px) {
  /* 基础样式重置 */
  .scale-wrapper.mobile-mode {
    width: 100% !important;
    max-width: 100% !important;
    overflow-x: hidden;
    background-color: #f0f0f0 !important;
  }

  .scale-wrapper.mobile-mode * {
    box-sizing: border-box;
  }

  /* 容器宽度适配 */
  .scale-wrapper.mobile-mode .container,
  .scale-wrapper.mobile-mode .header,
  .scale-wrapper.mobile-mode .page-banner,
  .scale-wrapper.mobile-mode .breadcrumb,
  .scale-wrapper.mobile-mode .cert-section,
  .scale-wrapper.mobile-mode .auth-section,
  .scale-wrapper.mobile-mode .crowd-section,
  .scale-wrapper.mobile-mode .course-section,
  .scale-wrapper.mobile-mode .article-section,
  .scale-wrapper.mobile-mode .story-section,
  .scale-wrapper.mobile-mode .prospect-section,
  .scale-wrapper.mobile-mode .section-foonter-menu {
    width: 100% !important;
    max-width: 100% !important;
  }

  /* Header 移动端适配 */
  .scale-wrapper.mobile-mode .header {
    height: 60px !important;
    padding: 10px 15px !important;
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    width: 100% !important;
    max-width: 100% !important;
    z-index: 10000 !important;
  }

  .scale-wrapper.mobile-mode .header-inner {
    width: 100% !important;
    max-width: 100% !important;
    flex-wrap: wrap;
    padding: 0 !important;
    flex-direction: row !important;
    justify-content: space-between !important;
    align-items: center !important;
    margin: 0 !important;
    height: 100% !important;
  }

  .scale-wrapper.mobile-mode .logo {
    width: auto;
    justify-content: flex-start;
    margin-bottom: 0;
    align-self: center;
  }

  .scale-wrapper.mobile-mode .logo img {
    width: 120px !important;
    max-width: 100%;
  }

  /* 移动端菜单按钮 */
  .scale-wrapper.mobile-mode .menu-toggle {
    display: flex !important;
    position: relative !important;
    right: auto !important;
    top: auto !important;
  }

  .scale-wrapper.mobile-mode .nav {
    width: 100% !important;
    position: fixed !important;
    top: 60px !important;
    left: 0 !important;
    right: 0 !important;
    background: var(--primary) !important;
    flex-direction: column !important;
    z-index: 9999 !important;
    padding: 10px 0 !important;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3) !important;
  }

  /* 给页面顶部留出空间，避免被固定的header遮挡 */
  .scale-wrapper.mobile-mode {
    padding-top: 60px !important;
  }

  .scale-wrapper.mobile-mode .nav-item {
    padding: 15px 20px !important;
    font-size: 16px !important;
    height: auto !important;
    width: 100% !important;
    text-align: center !important;
    border-bottom: 1px solid rgba(255,255,255,0.2) !important;
    display: block !important;
    margin: 0 !important;
  }

  .scale-wrapper.mobile-mode .nav-item:last-child {
    border-bottom: none !important;
  }

  .scale-wrapper.mobile-mode .nav-item.active,
  .scale-wrapper.mobile-mode .nav-item:hover {
    border-bottom: 1px solid rgba(255,255,255,0.2) !important;
    background: rgba(255,255,255,0.15) !important;
  }

  .scale-wrapper.mobile-mode .header-phone {
    display: none !important;
  }

  /* Section Title 移动端适配 */
  .scale-wrapper.mobile-mode .section-title {
    height: auto !important;
    padding: 30px 15px;
  }

  .scale-wrapper.mobile-mode .section-title-content {
    width: 100% !important;
    max-width: 300px;
    height: auto !important;
    background-size: 100% 100%;
    font-size: 24px !important;
    line-height: 1.5 !important;
    padding: 15px 10px;
  }

  /* Breadcrumb 移动端适配 */
  .scale-wrapper.mobile-mode .breadcrumb {
    padding: 10px 15px;
    margin: 10px 0;
  }

  .scale-wrapper.mobile-mode .breadcrumb-inner {
    width: 100% !important;
    font-size: 14px;
    flex-wrap: wrap;
  }

  /* Tab 导航移动端适配 */
  .scale-wrapper.mobile-mode .tab-nav {
    flex-wrap: wrap;
    padding: 0 10px;
    gap: 10px;
  }

  .scale-wrapper.mobile-mode .tab-nav-item {
    font-size: 14px;
    padding: 10px 20px;
  }

  /* 分页移动端适配 */
  .scale-wrapper.mobile-mode .pagination {
    justify-content: center;
    padding: 20px 10px;
  }

  .scale-wrapper.mobile-mode .pagination ul {
    justify-content: center;
    flex-wrap: wrap;
  }

  .scale-wrapper.mobile-mode .pagination-item,
  .scale-wrapper.mobile-mode .pagination ul li {
    width: 40px;
    height: 40px;
    font-size: 16px;
    margin: 5px;
  }

  /* Footer 移动端适配 */
  .scale-wrapper.mobile-mode .footer {
    padding: 30px 15px 20px;
  }

  .scale-wrapper.mobile-mode .footer-inner .copyright {
    font-size: 14px;
  }

  /* 移动端菜单按钮 - 如果需要可以显示 */
  .scale-wrapper.mobile-mode .menu-toggle {
    display: flex;
    position: absolute;
    right: 15px;
    top: 15px;
    z-index: 100;
  }

  /* 移动端导航菜单展开样式 */
  .scale-wrapper.mobile-mode .nav {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .scale-wrapper.mobile-mode .nav.open {
    max-height: 500px;
  }

  .scale-wrapper.mobile-mode .header-inner {
    position: relative;
  }
}

/* 小屏手机适配 */
@media screen and (max-width: 480px) {
  .scale-wrapper.mobile-mode .section-title-content {
    font-size: 20px !important;
  }

  .scale-wrapper.mobile-mode .nav-item {
    padding: 6px 10px;
    font-size: 12px;
  }
}


/* ==================== 移动端通用优化 ==================== */
@media screen and (max-width: 1024px) {
  /* 确保页面Banner在移动端正确显示 */
  .scale-wrapper.mobile-mode .page-banner {
    width: 100% !important;
    height: auto !important;
  }

  .scale-wrapper.mobile-mode .page-banner-content {
    width: 100% !important;
  }

  .scale-wrapper.mobile-mode .page-banner-content img {
    width: 100% !important;
    height: auto !important;
    display: block;
  }

  /* 确保面包屑在移动端正确显示 */
  .scale-wrapper.mobile-mode .breadcrumb {
    width: 100% !important;
    padding: 15px !important;
    margin: 0 !important;
  }

  .scale-wrapper.mobile-mode .breadcrumb-inner {
    width: 100% !important;
    font-size: 14px !important;
    flex-wrap: wrap;
    gap: 8px;
  }

  /* 确保页脚在移动端正确显示 */
  .scale-wrapper.mobile-mode .footer {
    padding: 30px 15px 20px !important;
  }

  .scale-wrapper.mobile-mode .footer-inner {
    max-width: 100% !important;
    padding: 0 !important;
  }

  .scale-wrapper.mobile-mode .footer-inner .copyright {
    font-size: 14px !important;
    text-align: center;
    line-height: 1.8;
  }

  /* 确保所有图片在移动端自适应 */
  .scale-wrapper.mobile-mode img {
    max-width: 100% !important;
    height: auto !important;
  }

  /* 确保所有容器在移动端不产生横向滚动 */
  .scale-wrapper.mobile-mode,
  .scale-wrapper.mobile-mode * {
    box-sizing: border-box;
  }

  /* 优化移动端触摸体验 */
  .scale-wrapper.mobile-mode a,
  .scale-wrapper.mobile-mode button,
  .scale-wrapper.mobile-mode .nav-item,
  .scale-wrapper.mobile-mode .article-card,
  .scale-wrapper.mobile-mode .course-card,
  .scale-wrapper.mobile-mode .share-card,
  .scale-wrapper.mobile-mode .student-item {
    -webkit-tap-highlight-color: transparent;
  }

  /* 移动端字体渲染优化 */
  .scale-wrapper.mobile-mode {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
  }
}