/* ============================================
   社会心理服务平台 - 全局样式
   ============================================ */

/* CSS 变量 */
:root {
  --color-primary: #2C7A7B;
  --color-primary-dark: #234E52;
  --color-primary-light: #4FD1C5;
  --color-primary-bg: #E6FFFA;
  --color-secondary: #2B6CB0;
  --color-secondary-bg: #EBF8FF;
  --color-accent: #D69E2E;
  --color-accent-bg: #FEFCBF;
  --color-danger: #E53E3E;
  --color-success: #38A169;

  --color-text: #2D3748;
  --color-text-light: #718096;
  --color-text-muted: #A0AEC0;
  --color-border: #E2E8F0;
  --color-bg: #F7FAFC;
  --color-bg-white: #FFFFFF;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Georgia", "Songti SC", "SimSun", serif;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.12);

  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
}

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

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

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

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

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

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

ul, ol {
  list-style: none;
}

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

/* ============================================
   顶部导航
   ============================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-bg-white);
  box-shadow: var(--shadow-sm);
  border-bottom: 1px solid var(--color-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  flex-shrink: 0;
}

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

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}

.logo-text .main {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary-dark);
}

.logo-text .sub {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  letter-spacing: 1px;
}

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

.nav-menu > li > a {
  display: block;
  padding: 8px 16px;
  font-size: 0.95rem;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  font-weight: 500;
  transition: var(--transition);
}

.nav-menu > li > a:hover,
.nav-menu > li > a.active {
  color: var(--color-primary);
  background: var(--color-primary-bg);
}

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

.nav-toggle span {
  width: 24px;
  height: 3px;
  background: var(--color-text);
  border-radius: 3px;
  transition: var(--transition);
}

/* ============================================
   Hero 区域
   ============================================ */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-secondary) 100%);
  color: white;
  overflow: hidden;
  padding: 80px 0 100px;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(79, 209, 197, 0.2) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(43, 108, 176, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-content h1 {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 20px;
}

.hero-content .subtitle {
  font-size: 1.15rem;
  opacity: 0.9;
  margin-bottom: 32px;
  line-height: 1.8;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
}

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

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

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

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: white;
}

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

.btn-accent:hover {
  background: #B7791F;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Hero 装饰图 */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-card {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-lg);
  padding: 40px;
  width: 100%;
  max-width: 420px;
}

.hero-card h3 {
  font-size: 1.1rem;
  margin-bottom: 20px;
  opacity: 0.9;
}

.hero-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

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

.hero-stat .number {
  font-size: 2rem;
  font-weight: 700;
  display: block;
}

.hero-stat .label {
  font-size: 0.85rem;
  opacity: 0.8;
  margin-top: 4px;
}

/* ============================================
   通用 Section
   ============================================ */
.section {
  padding: 64px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 48px;
  height: 3px;
  background: var(--color-primary);
  border-radius: 3px;
}

.section-header p {
  color: var(--color-text-light);
  font-size: 1.05rem;
  max-width: 600px;
  margin: 16px auto 0;
}

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

/* ============================================
   新闻动态
   ============================================ */
.news-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 32px;
}

.news-featured {
  background: var(--color-bg-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

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

.news-featured-img {
  width: 100%;
  height: 280px;
  background: linear-gradient(135deg, var(--color-primary-bg), var(--color-secondary-bg));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  color: var(--color-primary);
  overflow: hidden;
}

.news-featured-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
  font-size: 3rem;
  color: var(--color-primary);
}

.news-featured-body {
  padding: 28px;
}

.news-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--color-primary-bg);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.news-featured-body h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-text);
  line-height: 1.5;
}

.news-featured-body p {
  color: var(--color-text-light);
  font-size: 0.95rem;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.news-list-side {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.news-item {
  background: var(--color-bg-white);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border-left: 3px solid var(--color-primary);
}

.news-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}

.news-item h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-item .news-meta {
  font-size: 0.8rem;
}

/* ============================================
   服务概览
   ============================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

.service-card {
  background: var(--color-bg-white);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border-top: 4px solid transparent;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--color-primary);
  transform: scaleX(0);
  transition: var(--transition);
  transform-origin: left;
}

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

.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 20px;
  background: var(--color-primary-bg);
}

.service-card:nth-child(2) .service-icon { background: var(--color-secondary-bg); }
.service-card:nth-child(3) .service-icon { background: var(--color-accent-bg); }
.service-card:nth-child(4) .service-icon { background: #FED7D7; }

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

.service-card p {
  color: var(--color-text-light);
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.service-card .more-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.service-card .more-link::after {
  content: '\2192';
  transition: var(--transition);
}

.service-card:hover .more-link::after {
  transform: translateX(4px);
}

/* ============================================
   特色栏目 - 主题分类
   ============================================ */
.topics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px;
}

.topic-card {
  background: var(--color-bg-white);
  border-radius: var(--radius-md);
  padding: 28px 16px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}

.topic-card:hover {
  border-color: var(--color-primary-light);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.topic-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.topic-card h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.topic-card .topic-count {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* ============================================
   数据统计
   ============================================ */
.stats-section {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  color: white;
  padding: 56px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-item .stat-number {
  font-size: 2.8rem;
  font-weight: 700;
  display: block;
  line-height: 1;
}

.stat-item .stat-number .unit {
  font-size: 1.2rem;
  font-weight: 400;
  opacity: 0.8;
}

.stat-item .stat-label {
  font-size: 1rem;
  opacity: 0.85;
  margin-top: 8px;
}

/* ============================================
   树洞回音 / 问答
   ============================================ */
.echo-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.echo-item {
  background: var(--color-bg-white);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border-left: 4px solid var(--color-primary-light);
}

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

.echo-question {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
}

.echo-q-icon {
  width: 32px;
  height: 32px;
  background: var(--color-primary-bg);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.echo-question p {
  font-weight: 600;
  color: var(--color-text);
  font-size: 1rem;
}

.echo-answer {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding-left: 44px;
}

.echo-a-icon {
  width: 32px;
  height: 32px;
  background: var(--color-accent-bg);
  color: var(--color-accent);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.echo-answer p {
  color: var(--color-text-light);
  font-size: 0.92rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================
   页面通用 Banner
   ============================================ */
.page-banner {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 60%, var(--color-secondary) 100%);
  color: white;
  padding: 56px 0 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-banner::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(79, 209, 197, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.page-banner h1 {
  font-size: 2rem;
  font-weight: 700;
  position: relative;
  z-index: 1;
}

.page-banner p {
  margin-top: 12px;
  opacity: 0.85;
  font-size: 1.05rem;
  position: relative;
  z-index: 1;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 16px;
  position: relative;
  z-index: 1;
  justify-content: center;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.8);
}

.breadcrumb a:hover {
  color: white;
}

.breadcrumb span {
  opacity: 0.6;
}

/* ============================================
   新闻列表页
   ============================================ */
.news-page-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
}

.news-cards {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.news-card {
  background: var(--color-bg-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 0;
}

.news-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.news-card-img {
  background: linear-gradient(135deg, var(--color-primary-bg), var(--color-secondary-bg));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: var(--color-primary);
  overflow: hidden;
}

.news-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

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

/* ============================================
   新闻图集
   ============================================ */
.news-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 40px;
  padding-top: 40px;
  border-top: 1px solid var(--color-border-light, #e5e7eb);
}

.news-page-gallery {
  margin-top: 48px;
  padding: 32px;
  background: linear-gradient(135deg, #f8fafc 0%, #f0f9ff 100%);
  border-radius: var(--radius-lg, 16px);
}

.gallery-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
  position: relative;
  padding-left: 14px;
}

.gallery-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  background: linear-gradient(180deg, var(--color-primary, #0891b2), var(--color-secondary, #0d9488));
  border-radius: 2px;
}

.gallery-subtitle {
  color: var(--color-text-light, #64748b);
  font-size: 0.95rem;
  margin-bottom: 24px;
  padding-left: 14px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.gallery-item {
  position: relative;
  display: block;
  border-radius: var(--radius-md, 12px);
  overflow: hidden;
  box-shadow: var(--shadow-md, 0 4px 12px rgba(0,0,0,0.08));
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  background: #0f172a;
  aspect-ratio: 4 / 3;
}

.gallery-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg, 0 12px 32px rgba(0,0,0,0.18));
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}

.gallery-item:hover img {
  transform: scale(1.06);
}

.gallery-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 16px;
  background: linear-gradient(to top, rgba(15, 23, 42, 0.92) 0%, rgba(15, 23, 42, 0.65) 70%, transparent 100%);
  color: #fff;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.caption-tag {
  display: inline-block;
  align-self: flex-start;
  padding: 2px 10px;
  background: var(--color-primary, #0891b2);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 10px;
}

.gallery-caption p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.95);
}

@media (max-width: 768px) {
  .news-gallery,
  .gallery-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .news-page-gallery {
    padding: 20px;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .news-gallery,
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.news-card-body {
  padding: 24px;
}

.news-card-body h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-text);
  line-height: 1.5;
}

.news-card-body p {
  color: var(--color-text-light);
  font-size: 0.9rem;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sidebar-card {
  background: var(--color-bg-white);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.sidebar-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-primary-bg);
  color: var(--color-text);
}

.sidebar-card ul li {
  padding: 10px 0;
  border-bottom: 1px dashed var(--color-border);
}

.sidebar-card ul li:last-child {
  border-bottom: none;
}

.sidebar-card ul li a {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.92rem;
  color: var(--color-text);
}

.sidebar-card ul li a:hover {
  color: var(--color-primary);
}

.sidebar-card ul li .rank {
  width: 22px;
  height: 22px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  background: var(--color-border);
  color: var(--color-text-light);
  flex-shrink: 0;
}

.sidebar-card ul li:nth-child(1) .rank { background: var(--color-danger); color: white; }
.sidebar-card ul li:nth-child(2) .rank { background: var(--color-accent); color: white; }
.sidebar-card ul li:nth-child(3) .rank { background: var(--color-primary); color: white; }

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-cloud a {
  padding: 6px 14px;
  background: var(--color-bg);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  color: var(--color-text-light);
  transition: var(--transition);
}

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

/* ============================================
   服务页
   ============================================ */
.service-detail {
  background: var(--color-bg-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin-bottom: 32px;
}

.service-detail-header {
  padding: 40px;
  background: linear-gradient(135deg, var(--color-primary-bg), var(--color-secondary-bg));
  display: flex;
  align-items: center;
  gap: 24px;
}

.service-detail-header .icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  background: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
}

.service-detail-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}

.service-detail-header p {
  color: var(--color-text-light);
  font-size: 0.95rem;
}

.service-detail-body {
  padding: 32px 40px;
}

.service-detail-body h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 24px 0 12px;
  color: var(--color-primary-dark);
}

.service-detail-body h3:first-child {
  margin-top: 0;
}

.service-detail-body p, .service-detail-body li {
  color: var(--color-text-light);
  line-height: 1.9;
  margin-bottom: 8px;
}

.service-detail-body ul {
  padding-left: 0;
}

.service-detail-body ul li {
  padding-left: 20px;
  position: relative;
}

.service-detail-body ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  width: 6px;
  height: 6px;
  background: var(--color-primary);
  border-radius: 50%;
}

/* ============================================
   关于我们
   ============================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-text h2 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--color-text);
}

.about-text p {
  color: var(--color-text-light);
  margin-bottom: 16px;
  line-height: 1.9;
}

.about-visual {
  background: linear-gradient(135deg, var(--color-primary-bg), var(--color-secondary-bg));
  border-radius: var(--radius-lg);
  padding: 48px;
  text-align: center;
}

.about-visual .big-number {
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}

.about-visual .big-label {
  margin-top: 8px;
  color: var(--color-text-light);
}

.timeline {
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  padding-bottom: 32px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -32px;
  top: 4px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-bg-white);
  border: 3px solid var(--color-primary);
}

.timeline-item .year {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.timeline-item h4 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-text);
}

.timeline-item p {
  color: var(--color-text-light);
  font-size: 0.92rem;
}

/* ============================================
   团队卡片
   ============================================ */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 28px;
}

.team-card {
  background: var(--color-bg-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  text-align: center;
}

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

.team-avatar {
  width: 100%;
  height: 200px;
  background: linear-gradient(135deg, var(--color-primary-bg), var(--color-secondary-bg));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: var(--color-primary);
}

.team-info {
  padding: 24px;
}

.team-info h4 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.team-info .role {
  color: var(--color-primary);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.team-info p {
  color: var(--color-text-light);
  font-size: 0.88rem;
}

/* ============================================
   督导培养页
   ============================================ */
.training-intro {
  background: var(--color-bg-white);
  border-radius: var(--radius-md);
  padding: 48px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 40px;
}

.training-intro h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--color-text);
}

.training-intro p {
  color: var(--color-text-light);
  line-height: 1.9;
  margin-bottom: 12px;
}

.curriculum-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.curriculum-card {
  background: var(--color-bg-white);
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border-top: 4px solid var(--color-primary);
}

.curriculum-card:nth-child(2) { border-top-color: var(--color-secondary); }
.curriculum-card:nth-child(3) { border-top-color: var(--color-accent); }

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

.curriculum-card .phase {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.curriculum-card:nth-child(2) .phase { color: var(--color-secondary); }
.curriculum-card:nth-child(3) .phase { color: var(--color-accent); }

.curriculum-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--color-text);
}

.curriculum-card ul li {
  padding: 8px 0;
  color: var(--color-text-light);
  font-size: 0.92rem;
  border-bottom: 1px dashed var(--color-border);
  display: flex;
  align-items: center;
  gap: 8px;
}

.curriculum-card ul li::before {
  content: '\2713';
  color: var(--color-primary);
  font-weight: 700;
}

.curriculum-card ul li:last-child {
  border-bottom: none;
}

/* ============================================
   页脚
   ============================================ */
.site-footer {
  background: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.8);
  padding: 56px 0 24px;
  margin-top: 64px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .logo {
  color: white;
  margin-bottom: 16px;
}

.footer-brand .logo .logo-text .main {
  color: white;
}

.footer-brand .logo .logo-text .sub {
  color: rgba(255, 255, 255, 0.5);
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.8;
  opacity: 0.7;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 600;
  color: white;
  margin-bottom: 16px;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
}

.footer-col ul li a:hover {
  color: white;
}

.footer-contact p {
  font-size: 0.88rem;
  opacity: 0.7;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.5;
}

/* ============================================
   回到顶部
   ============================================ */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: white;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
  font-size: 1.2rem;
  border: none;
}

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

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

/* ============================================
   动画
   ============================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeInUp 0.6s ease forwards;
}

/* ============================================
   智慧学习页
   ============================================ */
.learn-hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}

.learn-hero-stat {
  background: var(--color-bg-white);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border-bottom: 3px solid var(--color-primary);
}

.learn-hero-stat:nth-child(2) { border-bottom-color: var(--color-secondary); }
.learn-hero-stat:nth-child(3) { border-bottom-color: var(--color-accent); }
.learn-hero-stat:nth-child(4) { border-bottom-color: var(--color-success); }

.learn-hero-stat .icon {
  font-size: 2rem;
  margin-bottom: 8px;
}

.learn-hero-stat .num {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-text);
}

.learn-hero-stat .label {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-top: 4px;
}

/* 学习路径 */
.learn-path-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.learn-path-card {
  background: var(--color-bg-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

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

.learn-path-header {
  padding: 32px 28px 24px;
  background: linear-gradient(135deg, var(--color-primary-bg), var(--color-secondary-bg));
  text-align: center;
}

.learn-path-card:nth-child(2) .learn-path-header {
  background: linear-gradient(135deg, var(--color-secondary-bg), var(--color-primary-bg));
}

.learn-path-card:nth-child(3) .learn-path-header {
  background: linear-gradient(135deg, var(--color-accent-bg), var(--color-primary-bg));
}

.learn-path-header .badge {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(255, 255, 255, 0.7);
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: 12px;
}

.learn-path-header h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
}

.learn-path-header .desc {
  font-size: 0.88rem;
  color: var(--color-text-light);
  margin-top: 8px;
}

.learn-path-body {
  padding: 24px 28px;
}

.learn-path-body .meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.learn-path-body .meta .level {
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.8rem;
}

.learn-path-body .meta .level.basic { background: #E6FFFA; color: var(--color-primary); }
.learn-path-body .meta .level.intermediate { background: var(--color-secondary-bg); color: var(--color-secondary); }
.learn-path-body .meta .level.advanced { background: var(--color-accent-bg); color: var(--color-accent); }

.learn-path-body .modules {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.learn-path-body .module {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--color-text);
}

.learn-path-body .module .step {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-primary-bg);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
}

.learn-path-body .progress-bar {
  margin-top: 16px;
  height: 6px;
  background: var(--color-bg);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.learn-path-body .progress-bar .fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: var(--radius-full);
}

/* 课程卡片 */
.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.course-card {
  background: var(--color-bg-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

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

.course-thumb {
  height: 160px;
  background: linear-gradient(135deg, var(--color-primary-bg), var(--color-secondary-bg));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  position: relative;
}

.course-card:nth-child(even) .course-thumb {
  background: linear-gradient(135deg, var(--color-accent-bg), var(--color-primary-bg));
}

.course-thumb .duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0, 0, 0, 0.5);
  color: white;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
}

.course-body {
  padding: 20px;
}

.course-body .tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.course-body .tag.hot { background: #FED7D7; color: var(--color-danger); }
.course-body .tag.new { background: var(--color-primary-bg); color: var(--color-primary); }
.course-body .tag.rec { background: var(--color-accent-bg); color: var(--color-accent); }

.course-body h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
  line-height: 1.5;
}

.course-body .instructor {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

.course-body .footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
}

.course-body .students {
  color: var(--color-text-muted);
}

.course-body .rating {
  color: var(--color-accent);
  font-weight: 600;
}

/* 资源库 */
.resource-tabs {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.resource-tab {
  padding: 8px 20px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-light);
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: var(--transition);
}

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

.resource-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}

.resource-card {
  background: var(--color-bg-white);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.resource-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.resource-card .r-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
  background: var(--color-primary-bg);
}

.resource-card:nth-child(even) .r-icon { background: var(--color-secondary-bg); }
.resource-card:nth-child(3n) .r-icon { background: var(--color-accent-bg); }

.resource-card .r-info h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.resource-card .r-info p {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin-bottom: 6px;
}

.resource-card .r-info .r-meta {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

/* 互动工具 */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.tool-card {
  background: var(--color-bg-white);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  text-align: center;
  border: 2px solid transparent;
}

.tool-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.tool-card .t-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin: 0 auto 16px;
  background: var(--color-primary-bg);
}

.tool-card:nth-child(2) .t-icon { background: var(--color-secondary-bg); }
.tool-card:nth-child(3) .t-icon { background: var(--color-accent-bg); }
.tool-card:nth-child(4) .t-icon { background: #FED7D7; }

.tool-card h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-text);
}

.tool-card p {
  font-size: 0.88rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.tool-card .t-btn {
  display: inline-block;
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-bg);
  color: var(--color-primary);
  font-size: 0.85rem;
  font-weight: 600;
  transition: var(--transition);
}

.tool-card .t-btn:hover {
  background: var(--color-primary);
  color: white;
}

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
  }
  .hero-visual {
    display: none;
  }
  .news-grid {
    grid-template-columns: 1fr;
  }
  .news-page-grid {
    grid-template-columns: 1fr;
  }
  .about-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 16px;
    box-shadow: var(--shadow-md);
    gap: 0;
  }

  .nav-menu.open {
    display: flex;
  }

  .nav-menu > li {
    width: 100%;
  }

  .nav-menu > li > a {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
  }

  .nav-toggle {
    display: flex;
  }

  .hero-content h1 {
    font-size: 1.8rem;
  }

  .section-header h2 {
    font-size: 1.5rem;
  }

  .news-card {
    grid-template-columns: 1fr;
  }

  .news-card-img {
    height: 160px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

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

  .service-detail-header {
    flex-direction: column;
    text-align: center;
    padding: 28px;
  }

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

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

  .learn-path-body .meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .resource-tabs {
    justify-content: flex-start;
  }
}