/* ============================================
   51吃瓜 - 五一劳模精神传承与工匠故事平台
   CSS前缀: lg- (LaoGong)
   设计风格: 劳动光荣复古宣传风
   ============================================ */

/* === CSS变量定义 === */
:root {
  --lg-red: #CE1226;
  --lg-red-dark: #A00E1E;
  --lg-blue: #2F5A8C;
  --lg-blue-dark: #1E3D5F;
  --lg-yellow: #FADFAD;
  --lg-yellow-light: #FFF8E7;
  --lg-cream: #FDF5E6;
  --lg-dark: #1A1A1A;
  --lg-gray: #4A4A4A;
  --lg-gray-light: #E8E0D4;
  --lg-white: #FEFEFE;
  --lg-font-title: "Source Han Sans CN", "Noto Sans SC", "Microsoft YaHei", "PingFang SC", sans-serif;
  --lg-font-body: "FangSong", "STFangsong", "KaiTi", "STKaiti", serif;
  --lg-font-quote: "KaiTi", "STKaiti", "FangSong", serif;
  --lg-shadow: 0 4px 12px rgba(0,0,0,0.15);
  --lg-shadow-heavy: 0 8px 24px rgba(0,0,0,0.25);
  --lg-radius: 4px;
  --lg-transition: all 0.3s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--lg-font-body);
  color: var(--lg-dark);
  background-color: var(--lg-cream);
  line-height: 1.8;
  overflow-x: hidden;
}

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

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

a:hover {
  color: var(--lg-red-dark);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--lg-font-title);
  font-weight: 700;
  line-height: 1.3;
  color: var(--lg-dark);
}

/* === 容器 === */
.lg-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
}

/* === 顶部导航 === */
.lg-header {
  background-color: var(--lg-red);
  padding: 0;
  position: relative;
  z-index: 100;
  box-shadow: 0 3px 10px rgba(0,0,0,0.3);
}

.lg-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  max-width: 1200px;
  margin: 0 auto;
}

.lg-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--lg-yellow);
  font-family: var(--lg-font-title);
  font-weight: 700;
  font-size: 1.1rem;
  white-space: nowrap;
}

.lg-logo img {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 2px solid var(--lg-yellow);
}

.lg-nav {
  display: none;
}

.lg-nav.lg-nav-active {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--lg-red-dark);
  padding: 10px 0;
  z-index: 200;
  box-shadow: var(--lg-shadow-heavy);
}

.lg-nav-link {
  color: var(--lg-white) !important;
  font-family: var(--lg-font-title);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 12px 20px;
  display: block;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  transition: var(--lg-transition);
}

.lg-nav-link:hover {
  background-color: rgba(255,255,255,0.1);
  color: var(--lg-yellow) !important;
}

.lg-header-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.lg-search-box {
  display: none;
}

.lg-search-box input {
  padding: 6px 12px;
  border: 2px solid var(--lg-yellow);
  border-radius: var(--lg-radius);
  background: rgba(255,255,255,0.15);
  color: var(--lg-white);
  font-size: 0.85rem;
  width: 160px;
  outline: none;
}

.lg-search-box input::placeholder {
  color: rgba(255,255,255,0.6);
}

.lg-btn-login {
  background-color: var(--lg-yellow);
  color: var(--lg-red-dark) !important;
  padding: 6px 14px;
  border-radius: var(--lg-radius);
  font-family: var(--lg-font-title);
  font-weight: 700;
  font-size: 0.85rem;
  white-space: nowrap;
}

.lg-btn-login:hover {
  background-color: #fff;
  color: var(--lg-red) !important;
}

.lg-hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
}

.lg-hamburger span {
  display: block;
  width: 24px;
  height: 3px;
  background-color: var(--lg-yellow);
  border-radius: 2px;
  transition: var(--lg-transition);
}

/* === 平台口号横幅 === */
.lg-slogan-bar {
  background: linear-gradient(90deg, var(--lg-blue-dark), var(--lg-blue));
  color: var(--lg-yellow);
  text-align: center;
  padding: 8px 16px;
  font-family: var(--lg-font-quote);
  font-size: 0.85rem;
  letter-spacing: 2px;
  border-bottom: 3px solid var(--lg-yellow);
}

/* === Hero轮播 === */
.lg-hero {
  position: relative;
  width: 100%;
  overflow: hidden;
  background-color: var(--lg-dark);
}

.lg-hero-slides {
  display: flex;
  transition: transform 0.6s ease;
}

.lg-hero-slide {
  min-width: 100%;
  position: relative;
  aspect-ratio: 16/9;
}

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

.lg-hero-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.85));
  padding: 30px 20px 20px;
  color: var(--lg-white);
}

.lg-hero-quote {
  font-family: var(--lg-font-quote);
  font-size: 1.1rem;
  line-height: 1.6;
  margin-bottom: 8px;
  text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
}

.lg-hero-source {
  font-size: 0.85rem;
  color: var(--lg-yellow);
  margin-bottom: 12px;
}

.lg-hero-btn {
  display: inline-block;
  background-color: var(--lg-red);
  color: var(--lg-white) !important;
  padding: 8px 20px;
  font-family: var(--lg-font-title);
  font-weight: 700;
  font-size: 0.9rem;
  border: 2px solid var(--lg-yellow);
  transition: var(--lg-transition);
}

.lg-hero-btn:hover {
  background-color: var(--lg-yellow);
  color: var(--lg-red) !important;
}

.lg-hero-dots {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 10;
}

.lg-hero-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: rgba(255,255,255,0.4);
  cursor: pointer;
  transition: var(--lg-transition);
}

.lg-hero-dot.lg-dot-active {
  background-color: var(--lg-yellow);
  transform: scale(1.3);
}

/* === 通用模块标题 === */
.lg-section {
  padding: 40px 0;
}

.lg-section-title {
  text-align: center;
  margin-bottom: 30px;
  position: relative;
}

.lg-section-title h2 {
  font-size: 1.5rem;
  color: var(--lg-red);
  display: inline-block;
  padding: 0 20px;
  position: relative;
}

.lg-section-title h2::before,
.lg-section-title h2::after {
  content: "★";
  color: var(--lg-yellow);
  font-size: 1rem;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
}

.lg-section-title h2::before {
  left: -5px;
}

.lg-section-title h2::after {
  right: -5px;
}

.lg-section-title .lg-subtitle {
  display: block;
  font-family: var(--lg-font-body);
  font-size: 0.9rem;
  color: var(--lg-gray);
  margin-top: 8px;
  font-weight: 400;
}

.lg-divider {
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, var(--lg-red), var(--lg-yellow), var(--lg-red));
  margin: 12px auto 0;
}

/* === 视频展播区 === */
.lg-video-section {
  background-color: var(--lg-dark);
  color: var(--lg-white);
}

.lg-video-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.lg-video-card {
  position: relative;
  border: 3px solid var(--lg-yellow);
  background-color: #2A2A2A;
  overflow: hidden;
  cursor: pointer;
  transition: var(--lg-transition);
}

.lg-video-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(206,18,38,0.4);
}

.lg-video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}

.lg-video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.lg-video-play-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60px;
  height: 60px;
  background-color: rgba(206,18,38,0.85);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 3px solid var(--lg-yellow);
  transition: var(--lg-transition);
}

.lg-video-play-icon::after {
  content: "";
  display: block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent var(--lg-white);
  margin-left: 4px;
}

.lg-video-card:hover .lg-video-play-icon {
  background-color: var(--lg-red);
  transform: translate(-50%, -50%) scale(1.1);
}

.lg-video-info {
  padding: 12px;
}

.lg-video-info h3 {
  font-size: 0.95rem;
  color: var(--lg-yellow);
  margin-bottom: 4px;
}

.lg-video-info p {
  font-size: 0.8rem;
  color: #AAA;
}

/* === 视频模态框 === */
.lg-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0,0,0,0.9);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.lg-modal.lg-modal-active {
  display: flex;
}

.lg-modal-content {
  position: relative;
  width: 100%;
  max-width: 800px;
}

.lg-modal-close {
  position: absolute;
  top: -40px;
  right: 0;
  color: var(--lg-white);
  font-size: 2rem;
  cursor: pointer;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--lg-red);
  border-radius: 50%;
  line-height: 1;
}

.lg-modal-video {
  width: 100%;
  aspect-ratio: 16/9;
  background-color: #000;
}

/* === 时代先锋榜 === */
.lg-pioneer-section {
  background: linear-gradient(135deg, var(--lg-yellow-light), var(--lg-cream));
}

.lg-pioneer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.lg-pioneer-card {
  display: flex;
  flex-direction: column;
  background-color: var(--lg-white);
  border: 2px solid var(--lg-gray-light);
  box-shadow: var(--lg-shadow);
  overflow: hidden;
  transition: var(--lg-transition);
}

.lg-pioneer-card:hover {
  box-shadow: var(--lg-shadow-heavy);
  border-color: var(--lg-red);
}

.lg-pioneer-img {
  aspect-ratio: 4/3;
  overflow: hidden;
}

.lg-pioneer-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--lg-transition);
}

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

.lg-pioneer-info {
  padding: 16px;
}

.lg-pioneer-name {
  font-family: var(--lg-font-title);
  font-size: 1.1rem;
  color: var(--lg-red);
  margin-bottom: 4px;
}

.lg-pioneer-title {
  font-size: 0.85rem;
  color: var(--lg-blue);
  margin-bottom: 8px;
  font-weight: 600;
}

.lg-pioneer-desc {
  font-size: 0.9rem;
  color: var(--lg-gray);
  line-height: 1.7;
}

/* === 技术革新成果展 === */
.lg-innovation-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.lg-innovation-card {
  background-color: var(--lg-white);
  border-left: 4px solid var(--lg-red);
  padding: 20px;
  box-shadow: var(--lg-shadow);
  transition: var(--lg-transition);
}

.lg-innovation-card:hover {
  transform: translateX(5px);
  box-shadow: var(--lg-shadow-heavy);
}

.lg-innovation-card h3 {
  font-size: 1rem;
  color: var(--lg-blue);
  margin-bottom: 8px;
}

.lg-innovation-card p {
  font-size: 0.9rem;
  color: var(--lg-gray);
  line-height: 1.7;
}

.lg-innovation-tag {
  display: inline-block;
  background-color: var(--lg-red);
  color: var(--lg-white);
  padding: 2px 10px;
  font-size: 0.75rem;
  font-family: var(--lg-font-title);
  margin-top: 10px;
}

/* === 光荣榜（滚动） === */
.lg-honor-section {
  background: linear-gradient(135deg, #FFF8E1, var(--lg-yellow-light));
  border-top: 3px solid var(--lg-red);
  border-bottom: 3px solid var(--lg-red);
  overflow: hidden;
}

.lg-honor-scroll {
  height: 200px;
  overflow: hidden;
  position: relative;
}

.lg-honor-list {
  animation: lg-scroll-up 20s linear infinite;
}

.lg-honor-item {
  padding: 10px 16px;
  font-size: 0.9rem;
  border-bottom: 1px dashed var(--lg-gray-light);
  display: flex;
  align-items: center;
  gap: 10px;
}

.lg-honor-badge {
  display: inline-block;
  background-color: var(--lg-red);
  color: var(--lg-white);
  padding: 2px 8px;
  font-size: 0.75rem;
  font-family: var(--lg-font-title);
  white-space: nowrap;
}

@keyframes lg-scroll-up {
  0% { transform: translateY(0); }
  100% { transform: translateY(-50%); }
}

/* === 音频播放器 === */
.lg-audio-section {
  background: linear-gradient(135deg, var(--lg-blue-dark), var(--lg-blue));
  color: var(--lg-white);
  text-align: center;
}

.lg-audio-wrapper {
  max-width: 500px;
  margin: 0 auto;
}

.lg-audio-wrapper h3 {
  color: var(--lg-yellow);
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.lg-audio-wrapper p {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.7);
  margin-bottom: 16px;
}

.lg-audio-player {
  width: 100%;
}

/* === 人民来信CTA === */
.lg-cta-section {
  background: linear-gradient(135deg, var(--lg-red), var(--lg-red-dark));
  color: var(--lg-white);
  text-align: center;
}

.lg-cta-card {
  max-width: 600px;
  margin: 0 auto;
  padding: 20px;
}

.lg-cta-card h2 {
  color: var(--lg-yellow);
  font-size: 1.4rem;
  margin-bottom: 12px;
}

.lg-cta-card p {
  font-size: 0.95rem;
  margin-bottom: 20px;
  line-height: 1.7;
  color: rgba(255,255,255,0.9);
}

.lg-cta-btn {
  display: inline-block;
  background-color: var(--lg-yellow);
  color: var(--lg-red-dark) !important;
  padding: 12px 30px;
  font-family: var(--lg-font-title);
  font-weight: 700;
  font-size: 1rem;
  border: 2px solid var(--lg-white);
  transition: var(--lg-transition);
}

.lg-cta-btn:hover {
  background-color: var(--lg-white);
  color: var(--lg-red) !important;
}

/* === 页脚 === */
.lg-footer {
  background-color: var(--lg-dark);
  color: var(--lg-gray-light);
  padding: 40px 0 0;
}

.lg-footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  padding-bottom: 30px;
  border-bottom: 1px solid #333;
}

.lg-footer-col h4 {
  color: var(--lg-yellow);
  font-size: 1rem;
  margin-bottom: 16px;
  font-family: var(--lg-font-title);
  position: relative;
  padding-bottom: 8px;
}

.lg-footer-col h4::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background-color: var(--lg-red);
}

.lg-footer-col p {
  font-size: 0.85rem;
  line-height: 1.8;
  color: #999;
}

.lg-footer-links {
  list-style: none;
}

.lg-footer-links li {
  margin-bottom: 8px;
}

.lg-footer-links a {
  color: #999 !important;
  font-size: 0.85rem;
  transition: var(--lg-transition);
}

.lg-footer-links a:hover {
  color: var(--lg-yellow) !important;
  padding-left: 5px;
}

/* === 荣誉标识区 === */
.lg-honor-badges {
  padding: 25px 0;
  border-top: 1px solid #333;
  border-bottom: 1px solid #333;
}

.lg-badge-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.lg-badge-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  color: #BBB;
  padding: 8px;
  background: rgba(255,255,255,0.03);
  border: 1px solid #333;
}

.lg-badge-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
}

/* === 底部版权与授权号 === */
.lg-footer-bottom {
  text-align: center;
  padding: 20px 0;
  font-size: 0.8rem;
  color: #777;
}

.lg-auth-number {
  display: block;
  margin-top: 8px;
  color: var(--lg-yellow);
  font-family: var(--lg-font-title);
  font-size: 0.85rem;
  letter-spacing: 1px;
}

/* === 面包屑导航 === */
.lg-breadcrumb {
  padding: 12px 0;
  font-size: 0.85rem;
  color: var(--lg-gray);
  border-bottom: 1px solid var(--lg-gray-light);
  margin-bottom: 20px;
}

.lg-breadcrumb a {
  color: var(--lg-blue);
}

.lg-breadcrumb span {
  margin: 0 6px;
  color: #999;
}

/* === 内页通用样式 === */
.lg-page-hero {
  background: linear-gradient(135deg, var(--lg-red), var(--lg-red-dark));
  color: var(--lg-white);
  padding: 40px 0;
  text-align: center;
  border-bottom: 4px solid var(--lg-yellow);
}

.lg-page-hero h1 {
  font-size: 1.6rem;
  color: var(--lg-white);
  margin-bottom: 8px;
}

.lg-page-hero p {
  font-size: 0.95rem;
  color: var(--lg-yellow);
}

.lg-article-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 30px 16px;
}

.lg-article-content h2 {
  font-size: 1.3rem;
  color: var(--lg-red);
  margin: 30px 0 15px;
  padding-left: 12px;
  border-left: 4px solid var(--lg-red);
}

.lg-article-content h3 {
  font-size: 1.1rem;
  color: var(--lg-blue);
  margin: 20px 0 10px;
}

.lg-article-content p {
  margin-bottom: 16px;
  text-indent: 2em;
  font-size: 1rem;
  line-height: 2;
}

.lg-article-img {
  margin: 20px 0;
  border: 3px solid var(--lg-gray-light);
  overflow: hidden;
}

.lg-article-img img {
  width: 100%;
}

.lg-article-img figcaption {
  text-align: center;
  font-size: 0.8rem;
  color: var(--lg-gray);
  padding: 8px;
  background-color: var(--lg-yellow-light);
}

/* === 人民来信表单 === */
.lg-letter-form {
  max-width: 650px;
  margin: 0 auto;
  padding: 30px 20px;
  background-image: url('../images/letter-bg.webp');
  background-size: cover;
  background-position: center;
  border: 3px solid var(--lg-gray-light);
  box-shadow: var(--lg-shadow-heavy);
}

.lg-form-group {
  margin-bottom: 20px;
}

.lg-form-group label {
  display: block;
  font-family: var(--lg-font-title);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--lg-dark);
  margin-bottom: 6px;
}

.lg-form-input,
.lg-form-textarea,
.lg-form-file {
  width: 100%;
  padding: 10px 14px;
  border: 2px solid var(--lg-gray-light);
  font-family: var(--lg-font-body);
  font-size: 0.95rem;
  background-color: rgba(255,255,255,0.85);
  transition: var(--lg-transition);
  outline: none;
}

.lg-form-input:focus,
.lg-form-textarea:focus {
  border-color: var(--lg-red);
  box-shadow: 0 0 0 3px rgba(206,18,38,0.1);
}

.lg-form-textarea {
  min-height: 150px;
  resize: vertical;
}

.lg-form-submit {
  display: inline-block;
  background-color: var(--lg-red);
  color: var(--lg-white);
  padding: 12px 30px;
  font-family: var(--lg-font-title);
  font-weight: 700;
  font-size: 1rem;
  border: 2px solid var(--lg-yellow);
  cursor: pointer;
  transition: var(--lg-transition);
}

.lg-form-submit:hover {
  background-color: var(--lg-red-dark);
  transform: translateY(-2px);
}

/* === 邮戳动画 === */
.lg-stamp-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0,0,0,0.7);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.lg-stamp-overlay.lg-stamp-active {
  display: flex;
}

.lg-stamp-img {
  width: 200px;
  height: 200px;
  animation: lg-stamp-drop 0.5s ease-out forwards;
  opacity: 0;
}

@keyframes lg-stamp-drop {
  0% {
    transform: scale(3) rotate(-30deg);
    opacity: 0;
  }
  70% {
    transform: scale(0.9) rotate(5deg);
    opacity: 1;
  }
  100% {
    transform: scale(1) rotate(0deg);
    opacity: 1;
  }
}

/* === APP下载页 === */
.lg-app-hero {
  background: linear-gradient(135deg, var(--lg-blue-dark), var(--lg-blue));
  color: var(--lg-white);
  padding: 50px 0;
  text-align: center;
}

.lg-app-mockup {
  max-width: 280px;
  margin: 0 auto 30px;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--lg-shadow-heavy);
}

.lg-app-buttons {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
  margin-top: 20px;
}

.lg-app-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--lg-red), var(--lg-red-dark));
  color: var(--lg-white) !important;
  padding: 14px 28px;
  font-family: var(--lg-font-title);
  font-weight: 700;
  font-size: 1rem;
  border: 3px solid var(--lg-yellow);
  border-radius: 50px;
  transition: var(--lg-transition);
  min-width: 220px;
  justify-content: center;
}

.lg-app-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(206,18,38,0.5);
}

.lg-app-medal {
  font-size: 1.5rem;
}

/* === 卡片列表通用 === */
.lg-card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.lg-card {
  background-color: var(--lg-white);
  border: 2px solid var(--lg-gray-light);
  overflow: hidden;
  box-shadow: var(--lg-shadow);
  transition: var(--lg-transition);
}

.lg-card:hover {
  box-shadow: var(--lg-shadow-heavy);
  border-color: var(--lg-red);
}

.lg-card-img {
  aspect-ratio: 16/9;
  overflow: hidden;
}

.lg-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--lg-transition);
}

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

.lg-card-body {
  padding: 16px;
}

.lg-card-body h3 {
  font-size: 1rem;
  color: var(--lg-red);
  margin-bottom: 8px;
}

.lg-card-body p {
  font-size: 0.9rem;
  color: var(--lg-gray);
  line-height: 1.7;
}

.lg-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--lg-gray-light);
  font-size: 0.8rem;
  color: #999;
}

.lg-read-more {
  color: var(--lg-red) !important;
  font-family: var(--lg-font-title);
  font-weight: 600;
  font-size: 0.85rem;
}

/* === 引用块 === */
.lg-blockquote {
  border-left: 4px solid var(--lg-red);
  background-color: var(--lg-yellow-light);
  padding: 16px 20px;
  margin: 20px 0;
  font-family: var(--lg-font-quote);
  font-size: 1rem;
  line-height: 1.8;
  color: var(--lg-gray);
}

/* === 公告栏 === */
.lg-notice-bar {
  background-color: var(--lg-yellow-light);
  border: 2px solid var(--lg-yellow);
  padding: 12px 16px;
  margin: 20px 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.lg-notice-label {
  background-color: var(--lg-red);
  color: var(--lg-white);
  padding: 2px 10px;
  font-family: var(--lg-font-title);
  font-size: 0.8rem;
  white-space: nowrap;
}

.lg-notice-text {
  font-size: 0.9rem;
  color: var(--lg-gray);
}

/* ============================================
   响应式断点 - Mobile First
   ============================================ */

/* 平板竖屏 768px */
@media (min-width: 768px) {
  .lg-container {
    padding: 0 24px;
  }

  .lg-hero-quote {
    font-size: 1.4rem;
  }

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

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

  .lg-pioneer-card {
    flex-direction: row;
  }

  .lg-pioneer-img {
    width: 200px;
    flex-shrink: 0;
    aspect-ratio: auto;
  }

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

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

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

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

  .lg-section-title h2 {
    font-size: 1.7rem;
  }

  .lg-app-buttons {
    flex-direction: row;
    justify-content: center;
  }
}

/* 平板横屏/小桌面 1024px */
@media (min-width: 1024px) {
  .lg-hamburger {
    display: none;
  }

  .lg-nav {
    display: flex !important;
    flex-direction: row;
    position: static;
    background: none;
    padding: 0;
    box-shadow: none;
    gap: 0;
  }

  .lg-nav-link {
    padding: 8px 14px;
    border-bottom: none;
    font-size: 0.9rem;
    position: relative;
  }

  .lg-nav-link::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background-color: var(--lg-blue);
    transition: var(--lg-transition);
  }

  .lg-nav-link:hover::after {
    width: 80%;
  }

  .lg-search-box {
    display: block;
  }

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

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

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

  .lg-section {
    padding: 50px 0;
  }

  .lg-page-hero {
    padding: 60px 0;
  }

  .lg-page-hero h1 {
    font-size: 2rem;
  }
}

/* 大桌面 1440px */
@media (min-width: 1440px) {
  .lg-container {
    max-width: 1320px;
  }

  .lg-hero-quote {
    font-size: 1.8rem;
  }

  .lg-section-title h2 {
    font-size: 2rem;
  }

  .lg-article-content {
    max-width: 900px;
  }

  .lg-pioneer-card {
    flex-direction: row;
  }

  .lg-pioneer-img {
    width: 260px;
  }
}

/* === 辅助类 === */
.lg-text-center { text-align: center; }
.lg-text-red { color: var(--lg-red); }
.lg-text-blue { color: var(--lg-blue); }
.lg-text-yellow { color: var(--lg-yellow); }
.lg-bg-red { background-color: var(--lg-red); }
.lg-bg-dark { background-color: var(--lg-dark); }
.lg-mt-20 { margin-top: 20px; }
.lg-mb-20 { margin-bottom: 20px; }
.lg-hidden { display: none !important; }