/* ==========================================
   飞鸟音乐会 - 样式表
   风格参考: myartsykids.com
   ========================================== */

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

/* CSS变量 */
:root {
  --primary-color: #6b8e7c;
  --primary-dark: #557265;
  --text-color: #4a4a4a;
  --text-light: #6d6d6d;
  --heading-color: #5a7a6b;
  --border-color: #e0e0e0;
  --background: #ffffff;
  --card-bg: #ffffff;
  --section-bg: #fafafa;
  --accent-purple: #8b6fa8;
  --accent-gold: #c9a84c;
  --font-serif: 'Noto Serif SC', 'Georgia', serif;
  --font-sans: 'Noto Sans SC', 'Arial', sans-serif;
}

/* 重置样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-color);
  background-color: var(--background);
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

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

/* ==========================================
   头部导航
   ========================================== */
.site-header {
  padding: 20px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}

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

.logo img {
  height: 65px;
  width: auto;
}

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

.logo-title {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 600;
  color: var(--heading-color);
  letter-spacing: 2px;
}

.logo-tagline {
  font-size: 10px;
  color: var(--text-light);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: 10px;
}

.main-nav li {
  display: flex;
  align-items: center;
}

.main-nav li::after {
  content: '•';
  margin-left: 10px;
  color: var(--text-light);
  font-size: 8px;
}

.main-nav li:last-child::after {
  display: none;
}

.main-nav a {
  font-family: var(--font-serif);
  font-size: 17px;
  color: var(--text-light);
  padding: 8px 12px;
  transition: color 0.3s ease;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--primary-color);
  text-decoration: none;
}

/* 移动端菜单 */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--text-color);
}

/* ==========================================
   全屏焦点图轮播
   ========================================== */
.hero-slider {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
  background: #000;
}

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

.slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.5s ease-in-out;
  pointer-events: none;
}

.slide.active {
  opacity: 1;
  pointer-events: auto;
}

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

/* 左右切换按钮 */
.slider-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 60px;
  height: 60px;
  background: rgba(255, 255, 255, 0.25);
  border: none;
  color: white;
  font-size: 24px;
  cursor: pointer;
  transition: background 0.2s ease;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.slider-btn:hover {
  background: rgba(255, 255, 255, 0.45);
}

.slider-btn:active {
  background: rgba(255, 255, 255, 0.55);
  transform: translateY(-50%) scale(0.95);
}

.slider-prev {
  left: 30px;
}

.slider-next {
  right: 30px;
}

/* 指示器小圆点 */
.slider-dots {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 15px;
  z-index: 10;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  border: 2px solid rgba(255, 255, 255, 0.8);
  cursor: pointer;
  transition: all 0.3s ease;
  padding: 0;
}

.dot:hover {
  background: rgba(255, 255, 255, 0.6);
}

.dot.active {
  background: white;
  transform: scale(1.2);
}

/* ==========================================
   主要内容区域
   ========================================== */
.main-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

/* 卡片样式 */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  margin-bottom: 30px;
  padding: 50px 60px;
}

.card-header {
  text-align: center;
  margin-bottom: 35px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 400;
  color: var(--heading-color);
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.section-subtitle {
  font-size: 14px;
  color: var(--text-light);
}

/* ==========================================
   欢迎区域
   ========================================== */
.welcome-section {
  text-align: left;
}

.welcome-section .section-title {
  text-align: center;
  margin-bottom: 40px;
}

.welcome-text p {
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 20px;
  color: var(--text-color);
}

.welcome-divider {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 35px 0;
}

.welcome-links {
  font-size: 16px;
}

.welcome-links a {
  text-decoration: underline;
}

/* ==========================================
   创始人介绍
   ========================================== */
.founder-section {
  display: flex;
  gap: 40px;
  align-items: flex-start;
}

.founder-photo {
  flex-shrink: 0;
}

.founder-photo img {
  width: 200px;
  height: 250px;
  object-fit: cover;
  border: 1px solid var(--border-color);
}

.founder-info {
  flex: 1;
}

.founder-name {
  font-family: var(--font-serif);
  font-size: 24px;
  color: var(--heading-color);
  margin-bottom: 8px;
}

.founder-title {
  font-size: 14px;
  color: var(--accent-purple);
  margin-bottom: 20px;
}

.founder-bio {
  font-size: 15px;
  line-height: 1.8;
}

.founder-bio p {
  margin-bottom: 15px;
}

/* ==========================================
   统计数据
   ========================================== */
.stats-section {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  text-align: center;
  padding: 50px 60px;
}

.stats-title {
  font-family: var(--font-serif);
  font-size: 18px;
  letter-spacing: 3px;
  margin-bottom: 10px;
  font-weight: 400;
}

.stats-subtitle {
  font-size: 14px;
  opacity: 0.9;
  margin-bottom: 40px;
}

.stats-grid {
  display: flex;
  justify-content: center;
  gap: 60px;
}

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

.stat-number {
  font-size: 42px;
  font-weight: 700;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 13px;
  opacity: 0.9;
}

/* ==========================================
   课程介绍 - 标签页样式
   ========================================== */
.courses-section {
  padding: 50px 60px;
}

/* 标签导航区域 */
.course-tabs-wrapper {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 30px 0;
  position: relative;
}

.tabs-nav-btn {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  background: var(--section-bg);
  border: 1px solid var(--border-color);
  color: var(--text-light);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

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

.course-tabs-container {
  flex: 1;
  overflow: hidden;
}

.course-tabs {
  display: flex;
  gap: 0;
  transition: transform 0.3s ease;
  white-space: nowrap;
}

.course-tab {
  flex-shrink: 0;
  padding: 12px 20px;
  background: var(--section-bg);
  border: 1px solid var(--border-color);
  border-right: none;
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--text-color);
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.course-tab:last-child {
  border-right: 1px solid var(--border-color);
}

.course-tab:hover {
  background: #f0f0f0;
}

.course-tab.active {
  background: #c41e3a;
  color: white;
  border-color: #c41e3a;
}

/* 课程内容面板 */
.course-panels {
  margin-top: 30px;
}

.course-panel {
  display: none;
}

.course-panel.active {
  display: block;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.course-content {
  display: flex;
  gap: 40px;
  align-items: flex-start;
}

.course-image {
  flex-shrink: 0;
  width: 380px;
}

.course-image img {
  width: 100%;
  height: 360px;
  object-fit: cover;
  border: 1px solid var(--border-color);
}

.course-details {
  flex: 1;
  height: 360px;
  overflow-y: auto;
  padding-right: 15px;
}

/* 自定义滚动条样式 */
.course-details::-webkit-scrollbar {
  width: 6px;
}

.course-details::-webkit-scrollbar-track {
  background: #f1f1f1;
  border-radius: 3px;
}

.course-details::-webkit-scrollbar-thumb {
  background: #c41e3a;
  border-radius: 3px;
}

.course-details::-webkit-scrollbar-thumb:hover {
  background: #a01830;
}

.course-title {
  font-family: var(--font-serif);
  font-size: 20px;
  color: #333;
  margin-bottom: 10px;
  font-weight: 600;
}

.course-age {
  font-size: 14px;
  color: #c41e3a;
  margin-bottom: 15px;
  font-weight: 500;
}

.course-intro {
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-color);
  margin-bottom: 12px;
}

.course-details > p {
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-color);
  margin-bottom: 15px;
}

.course-details h4 {
  font-size: 15px;
  color: #333;
  margin: 20px 0 12px;
  font-weight: 600;
}

.course-list-items {
  list-style: none;
  padding-left: 0;
  margin-bottom: 20px;
}

.course-list-items li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-color);
  margin-bottom: 6px;
}

.course-list-items li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background: #c41e3a;
  border-radius: 50%;
}

.course-highlight-box {
  background: #fdf8f8;
  border-left: 4px solid #c41e3a;
  padding: 20px;
  margin-top: 20px;
}

.course-highlight-box h4 {
  color: #c41e3a;
  margin-top: 0;
  margin-bottom: 10px;
}

.course-highlight-box p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-color);
  margin: 0;
}

/* 关键词气泡 */
.course-keywords {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 15px;
  margin-top: 50px;
  padding-top: 40px;
  border-top: 1px solid var(--border-color);
}

.keyword-bubble {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  font-size: 14px;
  font-weight: 500;
  border-radius: 50px;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.keyword-bubble:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.keyword-bubble i {
  font-size: 16px;
}

.keyword-bubble.highlight {
  background: linear-gradient(135deg, #c41e3a 0%, #e74c3c 100%);
  box-shadow: 0 4px 15px rgba(196, 30, 58, 0.3);
}

.keyword-bubble.highlight:hover {
  box-shadow: 0 6px 20px rgba(196, 30, 58, 0.4);
}

/* 课程模块响应式 */
@media (max-width: 900px) {
  .courses-section {
    padding: 30px 25px;
  }

  .course-tabs-wrapper {
    flex-direction: column;
    gap: 15px;
  }

  .tabs-nav-btn {
    display: none;
  }

  .course-tabs-container {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .course-tabs {
    padding-bottom: 10px;
  }

  .course-tab {
    padding: 10px 15px;
    font-size: 13px;
  }

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

  .course-image {
    width: 100%;
  }

  .course-image img {
    height: 220px;
  }

  .course-details {
    height: auto;
    max-height: 300px;
    overflow-y: auto;
    padding-right: 10px;
  }

  .course-keywords {
    gap: 10px;
  }

  .keyword-bubble {
    padding: 10px 18px;
    font-size: 13px;
  }
}

@media (max-width: 600px) {
  .course-tab {
    padding: 8px 12px;
    font-size: 12px;
  }

  .course-title {
    font-size: 18px;
  }

  .keyword-bubble {
    padding: 8px 14px;
    font-size: 12px;
    gap: 6px;
  }

  .keyword-bubble i {
    font-size: 14px;
  }
}

/* ==========================================
   作品展示模块
   ========================================== */
.gallery-section {
  padding: 0;
  overflow: hidden;
}

.gallery-header {
  padding: 50px 60px 30px;
  margin-bottom: 0;
}

/* 顶部横幅Banner */
.gallery-banner {
  position: relative;
  width: 100%;
  height: 450px;
  overflow: hidden;
}

.gallery-banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gallery-banner-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
}

.gallery-banner-content {
  text-align: center;
  max-width: 800px;
  padding: 40px;
  color: white;
}

.gallery-banner-title {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 600;
  margin-bottom: 20px;
  line-height: 1.4;
}

.gallery-banner-subtitle {
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 20px;
  opacity: 0.95;
}

.gallery-banner-text {
  font-size: 15px;
  line-height: 1.9;
  opacity: 0.9;
  margin-bottom: 12px;
}

.gallery-banner-text:last-child {
  margin-bottom: 0;
}

/* 三个展示模块 */
.gallery-modules {
  display: flex;
  flex-direction: column;
  gap: 30px;
  padding: 40px 60px 50px;
}

.gallery-module {
  display: flex;
  gap: 30px;
  border: 1px solid var(--border-color);
  background: white;
}

.gallery-module:nth-child(even) {
  flex-direction: row-reverse;
}

/* 焦点图轮播 */
.gallery-module-slider {
  flex: 0 0 45%;
  max-width: 45%;
  position: relative;
  overflow: hidden;
}

.gallery-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.5s ease;
}

.gallery-slide.active {
  position: relative;
  opacity: 1;
}

.gallery-slide img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  display: block;
}

.gallery-slider-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  background: rgba(255, 255, 255, 0.85);
  border: none;
  color: #333;
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  z-index: 5;
}

.gallery-slider-btn:hover {
  background: #c41e3a;
  color: white;
}

.gallery-prev {
  left: 10px;
}

.gallery-next {
  right: 10px;
}

.gallery-slider-dots {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 5;
}

.gallery-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: all 0.3s ease;
}

.gallery-dot.active {
  background: #c41e3a;
}

.gallery-dot:hover {
  background: rgba(255, 255, 255, 0.8);
}

.gallery-module-content {
  flex: 1;
  padding: 40px 50px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--section-bg);
}

.gallery-module-title {
  font-family: var(--font-serif);
  font-size: 20px;
  color: #333;
  margin-bottom: 15px;
  font-weight: 600;
  position: relative;
  padding-left: 15px;
}

.gallery-module-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 5px;
  width: 4px;
  height: 20px;
  background: #c41e3a;
}

.gallery-module-content p {
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-color);
}

/* 响应式 - 作品展示 */
@media (max-width: 900px) {
  .gallery-banner {
    height: 400px;
  }

  .gallery-banner-content {
    padding: 25px;
  }

  .gallery-banner-title {
    font-size: 22px;
  }

  .gallery-banner-subtitle {
    font-size: 16px;
  }

  .gallery-banner-text {
    font-size: 14px;
  }

  .gallery-modules {
    padding: 30px 25px;
    gap: 25px;
  }

  .gallery-module,
  .gallery-module:nth-child(even) {
    flex-direction: column;
    gap: 0;
  }

  .gallery-module-slider {
    flex: none;
    max-width: 100%;
  }

  .gallery-slide img {
    height: 220px;
  }

  .gallery-module-content {
    padding: 30px 25px;
  }

  .gallery-module-title {
    font-size: 18px;
  }
}

@media (max-width: 600px) {
  .gallery-banner {
    height: 350px;
  }

  .gallery-banner-title {
    font-size: 18px;
  }

  .gallery-banner-subtitle {
    font-size: 14px;
  }

  .gallery-banner-text {
    font-size: 13px;
    line-height: 1.8;
  }

  .gallery-modules {
    padding: 20px 15px;
    gap: 20px;
  }

  .gallery-slider-btn {
    width: 30px;
    height: 30px;
    font-size: 12px;
  }
}

/* ==========================================
   学员反馈
   ========================================== */
.testimonials {
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.testimonial-item {
  padding: 25px;
  background: var(--section-bg);
  border-left: 3px solid var(--primary-color);
}

.testimonial-text {
  font-size: 15px;
  font-style: italic;
  line-height: 1.8;
  margin-bottom: 15px;
  color: var(--text-color);
}

.testimonial-author {
  font-size: 14px;
  color: var(--text-light);
}

/* ==========================================
   邮件订阅
   ========================================== */
.newsletter-section {
  text-align: center;
}

.newsletter-text {
  font-size: 15px;
  color: var(--text-color);
  margin-bottom: 25px;
}

.newsletter-form {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.newsletter-input {
  width: 100%;
  max-width: 500px;
  padding: 12px 15px;
  border: 1px solid var(--border-color);
  font-size: 15px;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color 0.3s ease;
}

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

.newsletter-input::placeholder {
  color: #999;
}

.btn-primary {
  background: var(--text-color);
  color: white;
  border: none;
  padding: 15px 35px;
  font-size: 14px;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: background-color 0.3s ease;
  letter-spacing: 1px;
}

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

/* ==========================================
   艺术教育咨询·联系我们
   ========================================== */
.contact-section {
  padding: 50px 60px;
}

.contact-intro {
  text-align: center;
  margin-bottom: 50px;
}

.contact-intro-title {
  font-family: var(--font-serif);
  font-size: 20px;
  color: #333;
  margin-bottom: 20px;
  font-weight: 500;
}

.contact-intro p {
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-color);
  max-width: 900px;
  margin: 0 auto;
}

.contact-main {
  display: flex;
  gap: 50px;
  align-items: flex-start;
}

.contact-info {
  flex: 1;
}

.contact-block {
  margin-bottom: 35px;
}

.contact-block:last-child {
  margin-bottom: 0;
}

.contact-block-title {
  font-family: var(--font-serif);
  font-size: 16px;
  color: #333;
  margin-bottom: 18px;
  font-weight: 600;
}

.consult-list {
  list-style: none;
  padding-left: 0;
}

.consult-list li {
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-color);
  margin-bottom: 10px;
}

.consult-list li strong {
  color: #333;
}

.contact-details p {
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-color);
  margin-bottom: 8px;
}

.contact-details p strong {
  color: #333;
}

/* 右侧表单 */
.contact-form-wrapper {
  flex: 0 0 400px;
  background: var(--section-bg);
  padding: 40px;
  border: 1px solid var(--border-color);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  width: 100%;
}

.form-input {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--border-color);
  font-size: 14px;
  font-family: var(--font-sans);
  background: white;
  outline: none;
  transition: border-color 0.3s ease;
}

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

.form-input::placeholder {
  color: #999;
}

.form-textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--border-color);
  font-size: 14px;
  font-family: var(--font-sans);
  background: white;
  outline: none;
  resize: vertical;
  min-height: 100px;
  transition: border-color 0.3s ease;
}

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

.form-textarea::placeholder {
  color: #999;
}

.form-submit {
  background: #c41e3a;
  color: white;
  border: none;
  padding: 14px 30px;
  font-size: 14px;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: background-color 0.3s ease;
  letter-spacing: 1px;
  align-self: flex-start;
}

.form-submit:hover {
  background: #a01830;
}

/* 响应式 - 联系我们 */
@media (max-width: 900px) {
  .contact-section {
    padding: 30px 25px;
  }

  .contact-main {
    flex-direction: column;
    gap: 40px;
  }

  .contact-form-wrapper {
    flex: none;
    width: 100%;
    padding: 30px;
  }

  .form-submit {
    width: 100%;
  }
}

/* ==========================================
   页脚
   ========================================== */
.site-footer {
  background-image: url('../images/footer-bg.jpg');
  background-size: cover;
  background-position: center;
  position: relative;
  margin-top: 50px;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.85);
}

.footer-content {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.footer-section h4 {
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--text-light);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 20px;
  font-weight: 400;
}

.social-links {
  display: flex;
  gap: 15px;
  margin-bottom: 30px;
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: var(--text-color);
  font-size: 18px;
  transition: color 0.3s ease;
}

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

.footer-divider {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 20px 0;
  max-width: 400px;
}

.footer-note {
  font-size: 13px;
  color: var(--text-light);
}

.footer-contact p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-color);
}

.footer-contact a {
  color: var(--primary-color);
}

.footer-bottom {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 20px;
  font-size: 12px;
  color: var(--text-light);
  letter-spacing: 2px;
  text-transform: uppercase;
  background: rgba(255, 255, 255, 0.95);
}

/* ==========================================
   响应式设计
   ========================================== */
@media (max-width: 900px) {
  .site-header {
    flex-wrap: wrap;
    padding: 15px 20px;
    position: relative;
    background: white;
    z-index: 100;
  }

  .main-nav {
    display: none;
    width: 100%;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    padding: 0 20px;
    z-index: 99;
  }

  .main-nav.active {
    display: block;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 0;
  }

  .main-nav li {
    border-bottom: 1px solid var(--border-color);
  }

  .main-nav li:last-child {
    border-bottom: none;
  }

  .main-nav li::after {
    display: none;
  }

  .main-nav a {
    display: block;
    padding: 15px 0;
    font-size: 16px;
    color: var(--text-color);
  }

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

  .mobile-menu-toggle {
    display: block;
    padding: 8px;
    z-index: 101;
  }

  .card {
    padding: 30px 25px;
  }

  .founder-section {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .stats-grid {
    flex-wrap: wrap;
    gap: 30px;
  }

  .stat-item {
    flex: 1 1 120px;
  }

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

  .footer-content {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 40px 20px;
  }

  /* 轮播响应式 */
  .hero-slider {
    height: 60vh;
  }

  .slider-btn {
    width: 45px;
    height: 45px;
    font-size: 18px;
  }

  .slider-prev {
    left: 15px;
  }

  .slider-next {
    right: 15px;
  }

  .slider-dots {
    bottom: 25px;
  }

  .dot {
    width: 10px;
    height: 10px;
  }
}

@media (max-width: 600px) {
  .logo-title {
    font-size: 20px;
  }

  .section-title {
    font-size: 14px;
    letter-spacing: 2px;
  }

  .stat-number {
    font-size: 32px;
  }

  .founder-photo img {
    width: 150px;
    height: 190px;
  }
}

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

.card {
  animation: fadeInUp 0.6s ease-out;
}

.card:nth-child(2) { animation-delay: 0.1s; }
.card:nth-child(3) { animation-delay: 0.2s; }
.card:nth-child(4) { animation-delay: 0.3s; }
.card:nth-child(5) { animation-delay: 0.4s; }

/* ==========================================
   关于我们模块
   ========================================== */
.about-section {
  padding: 50px 60px;
}

.title-underline {
  position: relative;
  display: inline-block;
  color: #333;
  font-size: 18px;
  letter-spacing: 2px;
}

.title-underline::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 100%;
  height: 3px;
  background: #c41e3a;
}

.about-intro {
  margin-top: 30px;
}

.about-intro p {
  font-size: 15px;
  line-height: 2;
  color: var(--text-color);
  text-align: justify;
}

.section-divider {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 40px 0;
}

.about-block {
  margin-bottom: 10px;
}

.about-subtitle {
  font-family: var(--font-serif);
  font-size: 16px;
  color: #333;
  text-align: center;
  margin-bottom: 25px;
  font-weight: 500;
}

.about-block > p {
  font-size: 15px;
  line-height: 2;
  color: var(--text-color);
  text-align: justify;
  margin-bottom: 15px;
}

.philosophy-highlight {
  font-size: 16px;
  color: #333;
  font-weight: 500;
  text-align: center;
  margin-bottom: 20px;
}

.philosophy-points {
  margin-top: 25px;
}

.philosophy-point {
  margin-bottom: 25px;
}

.philosophy-point h4 {
  font-size: 15px;
  color: #333;
  font-weight: 600;
  margin-bottom: 10px;
}

.philosophy-point p {
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-color);
  padding-left: 0;
}

/* 创始人区块 */
.founder-block {
  text-align: center;
  padding: 20px 0;
}

.founder-block .founder-photo {
  margin-bottom: 20px;
}

.founder-block .founder-photo img {
  width: 200px;
  height: 260px;
  object-fit: cover;
  border: 1px solid var(--border-color);
}

.founder-title-label {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 25px;
}

.founder-bio-text {
  text-align: justify;
  max-width: 100%;
}

.founder-bio-text p {
  font-size: 15px;
  line-height: 2;
  color: var(--text-color);
}

/* 数字统计区块 */
.stats-block {
  padding: 40px 0 20px;
}

.stats-block .stats-grid {
  display: flex;
  justify-content: center;
  gap: 80px;
  flex-wrap: wrap;
}

.stats-block .stat-item {
  text-align: center;
  position: relative;
}

.stats-block .stat-number {
  font-size: 48px;
  font-weight: 700;
  color: #c41e3a;
  display: inline;
  line-height: 1;
}

.stats-block .stat-suffix {
  font-size: 36px;
  font-weight: 700;
  color: #c41e3a;
  display: inline;
}

.stats-block .stat-label {
  font-size: 13px;
  color: var(--text-light);
  margin-top: 10px;
  text-transform: none;
  letter-spacing: 0;
}

.stats-tags {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.stat-tag {
  font-size: 14px;
  color: var(--text-color);
  padding: 8px 20px;
  border: 1px solid var(--border-color);
  background: var(--section-bg);
}

/* 响应式 - 关于我们模块 */
@media (max-width: 900px) {
  .about-section {
    padding: 30px 25px;
  }

  .stats-block .stats-grid {
    gap: 40px;
  }

  .stats-block .stat-number {
    font-size: 36px;
  }

  .stats-block .stat-suffix {
    font-size: 28px;
  }

  .founder-block .founder-photo img {
    width: 160px;
    height: 210px;
  }
}

@media (max-width: 600px) {
  .stats-block .stats-grid {
    flex-direction: column;
    gap: 30px;
  }

  .stats-tags {
    flex-direction: column;
    align-items: center;
  }
}