/* ============================================
   Aircs爱云诊官网 - 主样式表
   设计规范参考 DESIGN.md
   ============================================ */

/* ---------- CSS 变量 ---------- */
:root {
  --primary-blue: #1890ff;
  --primary-blue-dark: #0050b3;
  --primary-blue-light: #e6f7ff;
  --accent-orange: #ff6b35;
  --text-dark: #333;
  --text-gray: #666;
  --text-light: #999;
  --bg-gray: #f5f5f5;
  --white: #fff;
  --border-color: #e8e8e8;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
  --radius: 12px;
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text-dark);
  line-height: 1.6;
  background: var(--white);
  overflow-x: hidden;
}

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

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- 通用区块样式 ---------- */
.section-label {
  display: block;
  font-size: 42px;
  font-weight: 700;
  color: var(--text-light);
  letter-spacing: 2px;
  margin-bottom: 10px;
  text-transform: uppercase;
}

.section-label-white {
  color: rgba(255, 255, 255, 0.7);
}

.section-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 30px;
}

.section-header-left {
  flex: 1;
}

.section-header-right {
  flex: 1;
  text-align: right;
}

.section-icon {
  width: 32px;
  height: 32px;
  margin-left: 8px;
  vertical-align: middle;
}

.section-title {
  display: flex;
  align-items: center;
  font-size: 42px;
  font-weight: 700;
  color: var(--primary-blue);
  margin: 0;
}




.section-label-light {
  color: #69c0ff;
}

.section-title-white {
  color: var(--white);
}

.title-underline {
  width: 60px;
  height: 3px;
  background: var(--accent-orange);
  margin: 15px 0;
}

/* ==========================================
   顶部导航
   ========================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 15px 0;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition);
}

.navbar.navbar-scrolled {
  background: rgba(255, 255, 255, 0.97);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(10px);
}

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

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

.logo-img {
  height: 40px;
  width: auto;
}

.logo-slogan {
  font-size: 12px;
  color: var(--text-light);
  white-space: nowrap;
}

/* 移动端汉堡菜单按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
  z-index: 1001;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--primary-blue);
  border-radius: 2px;
  transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.nav-menu {
  display: flex;
  gap: 32px;
}

.nav-menu a {
  color: var(--text-gray);
  font-size: 14px;
  font-weight: 500;
  position: relative;
  transition: color var(--transition);
}

.nav-menu a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background: var(--primary-blue);
  transition: width var(--transition);
}

.nav-menu a:hover {
  color: var(--primary-blue);
}

.nav-menu a:hover::after {
  width: 100%;
}

/* ==========================================
   Banner
   ========================================== */
.banner {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.banner-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.banner-overlay {
  position: absolute;
  inset: 0;
 
}

.banner-content {
  position: relative;
  z-index: 10;
  color: var(--white);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 100%;
  padding: 120px 20px 0;
}

.banner-title {
  font-size: 72px;
  font-weight: 900;
  letter-spacing: 8px;
  text-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.banner-slogans {
  text-align: center;
  margin-top: auto;
  padding-bottom: 60px;
}

.banner-slogan {
  font-size: 24px;
  font-weight: 300;
  letter-spacing: 2px;
  margin: 8px 0;
}

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  animation: scrollBounce 2s infinite;
}

.scroll-icon {
  width: 40px;
  height: 40px;
  cursor: pointer;
}

@keyframes scrollBounce {
  0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
  40% { transform: translateX(-50%) translateY(-10px); }
  60% { transform: translateX(-50%) translateY(-5px); }
}

/* ==========================================
   品牌介绍
   ========================================== */
.about-section {
  position: relative;
  padding: 120px 0;
  overflow: hidden;
}

.about-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.about-overlay {
  position: absolute;
  inset: 0;
  
}

.about-section .container {
  position: relative;
  z-index: 10;
}

.about-content {
  display: flex;
  gap: 60px;
  align-items: center;
}

.about-text {
  flex: 1;
}

.about-slogan {
  font-size: 28px;
  font-weight: 600;
  color: var(--primary-blue);
  margin: 20px 0 10px;
}

.about-description {
  font-size: 16px;
  color: var(--text-gray);
  line-height: 1.8;
  margin: 15px 0;
}

.about-mascot {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.mascot-tagline {
  font-size: 18px;
  font-weight: 600;
  color: var(--primary-blue);
  text-align: center;
  margin-bottom: 24px;
  line-height: 1.5;
}

.mascot-img {
  max-width: 300px;
  height: auto;
}

/* ==========================================
   品牌定位
   ========================================== */
.positioning-section {
  padding: 80px 0;
  background: var(--white);
}

.positioning-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 260px;
}

.positioning-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.positioning-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.92) 0%, rgba(230, 247, 255, 0.9) 100%);
}

.positioning-card-content {
  position: relative;
  z-index: 10;
  padding: 50px 40px;
}

.positioning-label {
  font-size: 12px;
  color: var(--text-light);
  letter-spacing: 1px;
  display: block;
  margin-bottom: 15px;
}

.positioning-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 20px;
}

.positioning-text {
  font-size: 20px;
  color: var(--text-gray);
  line-height: 1.6;
}

.positioning-icon {
  position: absolute;
  bottom: 30px;
  right: 30px;
  width: 40px;
  height: 40px;
  opacity: 0.25;
}

/* ==========================================
   最新动态
   ========================================== */
.updates-section {
  position: relative;
  padding: 100px 0;
  background: url('../imgs/background_3.png') center/cover no-repeat;
}

.updates-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.88) 0%, rgba(255, 255, 255, 0.92) 100%);
  z-index: 0;
}

.updates-section .container {
  position: relative;
  z-index: 1;
}

.updates-subtitle {
  font-size: 24px;
  font-weight: 600;
  color: var(--text-gray);
  margin-bottom: 10px;
}

.updates-desc {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 40px;
}

.updates-list {
  background: var(--white);
  border-radius: var(--radius);
  padding: 30px 30px 70px;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.updates-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 2px solid var(--border-color);
}

.updates-header-left {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.updates-list-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--primary-blue);
}

.updates-list-label {
  font-size: 12px;
  color: var(--text-light);
  letter-spacing: 1px;
}

/* 展开/收缩按钮 */
.updates-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: 1px solid var(--primary-blue);
  border-radius: 20px;
  padding: 8px 16px;
  cursor: pointer;
  color: var(--primary-blue);
  font-size: 13px;
  font-family: inherit;
  transition: all 0.3s ease;
  white-space: nowrap;
  flex-shrink: 0;
}

.updates-toggle:hover {
  background: var(--primary-blue);
  color: var(--white);
}

.updates-toggle:hover .toggle-icon {
  filter: brightness(0) invert(1);
}

.toggle-icon {
  width: 16px;
  height: 16px;
  transition: filter 0.3s ease;
}

.toggle-text {
  font-size: 13px;
}

/* 电脑端：按钮固定在右下角 */
.updates-toggle-wrap {
  position: absolute;
  bottom: 20px;
  right: 30px;
}

/* 隐藏的时间线项 */
.timeline-item.timeline-hidden {
  display: none;
}

.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.timeline-item {
  display: flex;
  gap: 24px;
  padding: 16px 0;
  position: relative;
}

.timeline-item + .timeline-item::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 0;
  bottom: 50%;
  width: 2px;
  background: var(--primary-blue-light);
  transform: translateY(-50%);
}

.timeline-dot {
  flex-shrink: 0;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent-orange);
  border: 3px solid var(--white);
  box-shadow: 0 0 0 2px var(--primary-blue);
  margin-top: 6px;
  position: relative;
  z-index: 1;
}

.timeline-content {
  flex: 1;
}

.timeline-date {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary-blue);
  display: block;
  margin-bottom: 5px;
}

.timeline-text {
  font-size: 15px;
  color: var(--text-gray);
  line-height: 1.6;
}

/* ==========================================
   核心优势
   ========================================== */
.advantages-section {
  position: relative;
  padding: 120px 0;
  overflow: hidden;
}

.advantages-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.advantages-overlay {
  position: absolute;
  inset: 0;
}

.advantages-section .container {
  position: relative;
  z-index: 10;
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
  margin-top: 40px;
  width: 70%;
}

.advantage-card {
  position: relative;
  background: var(--white);
  border-radius: var(--radius);
  padding: 30px;
  padding-right: 56px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  overflow: hidden;
}

.advantage-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.advantage-number {
  position: absolute;
  right: 8px;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 56px;
  background: linear-gradient(180deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
  border-radius: 0 0 20px 20px;
  color: var(--white);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 1px;
}

.advantage-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-black);
  margin-bottom: 10px;
}
.advantage-des {
  font-size: 16px;
  font-weight: 600;
  color: var(--primary-blue);
  margin-bottom: 10px;
}

.advantage-text {
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.6;
}

/* ==========================================
   AI应用
   ========================================== */
.application-section {
  background: var(--white);
}

.application-header {
  position: relative;
  height: 800px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding-top: 50px;
  overflow: hidden;
}

.application-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.application-header-overlay {
  position: absolute;
  inset: 0;
}

.application-header-title {
  position: relative;
  z-index: 10;
  font-size: 84px;
  font-weight: 700;
  color: var(--white);
  text-align: center;
}

.application-header-des {
  position: relative;
  z-index: 10;
  font-size: 24px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.7);
  text-align: center;
}

.application-section .container {
  padding: 80px 20px;
}

.application-subtitle {
  font-size: 24px;
  font-weight: 600;
  color: var(--text-gray);
  margin-bottom: 30px;
}

.application-description {
  font-size: 16px;
  color: var(--text-gray);
  line-height: 1.8;
  margin-bottom: 50px;
}

.application-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.feature-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.feature-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.feature-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--primary-blue);
  margin-bottom: 8px;
}

.feature-text {
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.6;
}

/* ==========================================
   平台生态
   ========================================== */
.platform-section {
  position: relative;
  padding: 120px 0;
  overflow: hidden;
}

.platform-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.platform-overlay {
  position: absolute;
  inset: 0;
}

.platform-section .container {
  position: relative;
  z-index: 10;
}

.platform-content {
  display: flex;
  flex-direction: row;
  gap: 60px;
  align-items: flex-start;
}

.platform-left {
  flex: 1;
  min-width: 0;
}

.platform-right {
  flex: 1;
  min-width: 0;
  background: rgba(8, 77, 3, 0.65);
  border-radius: var(--radius);
  padding: 24px;
}

.platform-section-foot {
  margin-top: 60px;
  color: var(--white);
}

.platform-section-foot p {
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
}

.platform-subtitle {
  font-size: 24px;
  font-weight: 600;
  color: var(--text-gray);
  margin-bottom: 50px;
}

.platform-layers {
  display: flex;
  flex-direction: column;
  gap: 24px;
  background: transparent;
}

.layer-item {
  background: transparent;
  padding: 28px 32px;
  border-left: 4px solid var(--white);
  transition: transform var(--transition);
}

.layer-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 15px;
}

.layer-text {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.6;
}

/* ==========================================
   品牌价值观
   ========================================== */
.value-section {
  position: relative;
  padding: 120px 0;
  overflow: hidden;
  text-align: center;
}


.value-section-title {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  font-size: 42px;
  font-weight: 700;
  color: var(--primary-blue);
}

.value-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.value-overlay {
  position: absolute;
  inset: 0;
}

.value-section .container {
  position: relative;
  z-index: 10;
}

.value-section .section-header {
  justify-content: center;
}

.value-text {
  font-size: 24px;
  color: var(--white);
  line-height: 1.8;
  font-weight: 500;
  max-width: 800px;
  margin: 0 auto;
}

/* ==========================================
   科普行动 & 理念
   ========================================== */
.science-section {
  position: relative;
  padding: 100px 0;
  overflow: hidden;
}

.science-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.science-overlay {
  position: absolute;
  inset: 0;
}

.science-section .container {
  position: relative;
  z-index: 10;
}

.science-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.science-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 40px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.science-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.science-label {
  font-size: 24px;
  color: var(--text-light);
  letter-spacing: 1px;
  display: block;
  margin-bottom: 15px;
}

.science-title {
  font-size: 28px;
  font-weight: 600;
  color: var(--primary-blue);
  margin-bottom: 15px;
}

.science-text {
  font-size: 15px;
  color: var(--text-gray);
  line-height: 1.8;
}

.science-content{
    border-left: 4px solid var(--primary-blue);
    padding-left: 10px;
}
.science-text-2{
    margin-top: 30px;
    background: #f5faff;
}
.science-text-2 span{
    color:var(--primary-blue)
}
.science-icon {
  position: absolute;
  bottom: 20px;
  right: 20px;
  width: 36px;
  height: 36px;
  opacity: 0.2;
}

/* ==========================================
   研发团队
   ========================================== */
.team-section {
  padding: 100px 0;
  background: var(--white);
}

.team-subtitle {
  font-size: 24px;
  font-weight: 600;
  color: var(--text-gray);
  margin-bottom: 30px;
}

.team-description {
  font-size: 16px;
  color: var(--text-gray);
  line-height: 1.8;
  margin-bottom: 50px;
  max-width: 800px;
}

.team-members {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 30px;
}

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

.member-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 15px;
  border: 3px solid var(--border-color);
  transition: border-color var(--transition), transform var(--transition);
}

.member-item:hover .member-avatar {
  border-color: var(--primary-blue);
  transform: scale(1.05);
}

.member-name {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 5px;
}

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

/* ==========================================
   战略合作
   ========================================== */
.cooperation-section {
  position: relative;
  padding: 100px 0;
  overflow: hidden;
}

.cooperation-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.cooperation-overlay {
  position: absolute;
  inset: 0;
}

.cooperation-section .container {
  position: relative;
  z-index: 10;
  text-align: center;
}

.cooperation-title {
  font-size: 42px;
  font-weight: 700;
  color: var(--white);
  margin: 20px 0 15px;
}

.cooperation-subtitle {
  font-size: 24px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 30px;
}

.cooperation-text {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
  max-width: 700px;
  margin: 0 auto 50px;
}

.cooperation-icon {
  display: block;
  width: 100px;
  height: 100px;
  margin: 0 auto;
  object-fit: contain;
}

.partners-area {
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: 60px;
  margin-top: 40px;
  backdrop-filter: blur(10px);
}

.partners-placeholder {
  color: rgba(255, 255, 255, 0.6);
  font-size: 16px;
}

/* ==========================================
   底部
   ========================================== */
.footer {
  background: rgba(255, 255, 255, 0.85);
  padding: 60px 0 30px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 60px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-info,
.join-info {
  color: var(--white);
}

.contact-icon {
  width: 32px;
  height: 32px;
  margin-bottom: 15px;
}

.contact-title,
.join-title {
  font-size: 24px;
  font-weight: 600;
  color: #003a8c;
  margin-bottom: 20px;
}

.contact-item,
.join-item {
  font-size: 14px;
  color: #003a8c;
  margin: 10px 0;
  line-height: 1.6;
}

.footer-bottom {
  padding-top: 30px;
  text-align: center;
}

.footer-logo {
  height: 40px;
  width: auto;
  margin: 0 auto 15px;
  opacity: 0.8;
}

.copyright {
  font-size: 12px;
  color: #003a8c;
}

.license-number {
    color: #4b5563;
}

/* ==========================================
   响应式 - Tablet (768px - 1024px)
   ========================================== */
@media (max-width: 1024px) {
  .banner-title {
    font-size: 56px;
    letter-spacing: 4px;
  }

  .section-title {
    font-size: 36px;
  }

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

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

  .application-header-title {
    font-size: 38px;
  }

  .about-content {
    gap: 40px;
  }
}

/* ==========================================
   响应式 - Mobile (< 768px)
   ========================================== */
@media (max-width: 768px) {
  /* 导航 */
  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--white);
    flex-direction: column;
    padding: 90px 30px 30px;
    gap: 0;
    box-shadow: var(--shadow-lg);
    transition: right var(--transition);
    z-index: 999;
  }

  .nav-menu.active {
    right: 0;
  }

  .nav-menu a {
    display: block;
    padding: 15px 0;
    font-size: 16px;
    border-bottom: 1px solid var(--border-color);
  }

  .navbar .container {
    padding: 0 20px;
  }

  .logo-slogan {
    display: none;
  }

  /* Banner */
  .banner {
    min-height: 500px;
  }

  .banner-title {
    font-size: 32px;
    letter-spacing: 3px;
  }

  .banner-slogan {
    font-size: 16px;
  }

  /* 通用 */
  .section-label {
    font-size: 24px;
  }

  .section-header {
    flex-direction: column;
    gap: 20px;
  }

  .section-header-right {
    text-align: left;
  }

  .section-title {
    font-size: 30px;
  }

  .about-section {
    padding: 80px 0;
  }

  .about-content {
    flex-direction: column;
    gap: 40px;
  }

  .about-mascot {
    flex: 1 1 auto;
  }

  .mascot-img {
    max-width: 200px;
  }

  .about-slogan {
    font-size: 22px;
  }

  /* 品牌定位 */
  .positioning-card-content {
    padding: 30px 24px;
  }

  .positioning-title {
    font-size: 26px;
  }

  .positioning-text {
    font-size: 17px;
  }

  /* 最新动态 */
  .updates-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .updates-list-label {
    font-size: 10px;
  }

  .updates-list {
    padding: 20px;
  }

  .updates-toggle-wrap {
    position: static;
    display: flex;
    justify-content: center;
    margin-top: 20px;
  }

  /* 核心优势 */
  .advantages-section {
    padding: 80px 0;
  }

  .advantages-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    width: 100%;
  }

  /* AI应用 */
  .application-header {
    height: 280px;
  }

  .application-header-title {
    font-size: 28px;
  }

  .application-header-des {
    font-size: 16px;
  }

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

  .application-section .container {
    padding: 60px 20px;
  }

  /* 平台生态 */
  .platform-section {
    padding: 80px 0;
  }

  .platform-content {
    flex-direction: column;
    gap: 30px;
  }

  .platform-layers {
    gap: 20px;
  }

  .platform-subtitle {
    margin-bottom: 30px;
  }

  /* 品牌价值观 */
  .value-section {
    padding: 80px 0;
    height: 1000px;
  }

  .value-text {
    font-size: 20px;
  }

  /* 科普 */
  .science-section {
    padding: 80px 0;
  }

  .science-cards {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .science-card {
    padding: 30px;
  }

  .science-title {
    font-size: 24px;
  }

  /* 研发团队 */
  .team-section {
    padding: 80px 0;
  }

  .team-members {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .team-description {
    margin-bottom: 40px;
  }

  /* 战略合作 */
  .cooperation-section {
    padding: 80px 0;
  }

  .cooperation-title {
    font-size: 32px;
  }

  .cooperation-subtitle {
    font-size: 20px;
  }

  .partners-area {
    padding: 40px;
  }

  /* 底部 */
  .footer-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .updates-section {
    padding: 80px 0;
  }
}

/* ==========================================
   响应式 - Small Mobile (< 480px)
   ========================================== */
@media (max-width: 480px) {
  .banner-title {
    font-size: 26px;
    letter-spacing: 2px;
  }

  .banner-slogan {
    font-size: 14px;
  }

  .section-label {
    font-size: 20px;
  }

  .section-title {
    font-size: 26px;
  }

  .section-icon {
    width: 24px;
    height: 24px;
  }

  .team-members {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .member-avatar {
    width: 100px;
    height: 100px;
  }

  .application-header-title {
    font-size: 24px;
  }

  .application-header-des {
    font-size: 14px;
  }

  .updates-list-label {
    font-size: 9px;
  }

  .advantage-card {
    padding: 24px;
  }

  .layer-item {
    padding: 24px;
  }

  .science-card {
    padding: 24px;
  }

  .positioning-card-content {
    padding: 24px 20px;
  }

  .positioning-title {
    font-size: 22px;
  }

  .value-text {
    font-size: 18px;
  }

  .contact-title,
  .join-title {
    font-size: 20px;
  }

  .footer {
    padding: 40px 0 20px;
  }
}

/* ==========================================
   打印样式
   ========================================== */
@media print {
  .navbar,
  .scroll-indicator {
    display: none;
  }

  section {
    page-break-inside: avoid;
    padding: 30px 0 !important;
  }
}