/*---------------------------------------------------- */
/* 企业的核心理念样式 */
/*----------------------------------------------------*/
/* .position-relative .container {
  padding: 0;
} */
.core-concepts-section {
  position: relative;
  padding: 80px 0;
  overflow: hidden;
  min-height: 600px;
  display: flex;
  align-items: center;
  background-image: url("../img/about/mountain-bg.webp");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.core-concepts-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.core-concepts-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.4);
  z-index: 2;
}

.core-concepts-content {
  position: relative;
  z-index: 3;
  text-align: center;
  color: #ffffff;
}

.core-concepts-title {
  font-size: 2.8rem;
  font-weight: 700;
  margin-bottom: 100px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.core-concepts-line {
  display: none;
}

.core-concepts-items {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

.core-concepts-items::before {
  content: "";
  width: 100%;
  position: absolute;
  top: 60px; /* 圆点中心位置 */
  height: 2px;
  background: #ffffff;
  z-index: 1;
}

.core-concept-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  padding: 0 20px;
}

.core-concept-circle {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  /* background: rgba(255, 255, 255, 0.1); */
  border: 2px solid #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 15px;
  position: relative;
  z-index: 4;
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.core-concept-circle:hover {
  transform: scale(1.1);
  background: rgba(255, 255, 255, 0.2);
}

.core-concept-circle .core-concept-title {
  color: #ffffff;
  font-size: 1.5rem;
  text-align: center;
  z-index: 3;
  position: relative;
}

.core-concept-line {
  display: none;
}

.core-concept-description {
  background: none;
  padding: 0;
  border-radius: 0;
  backdrop-filter: none;
  border: none;
  max-width: 170px;
  text-align: left;
  position: relative;
  z-index: 2;
  display: flex;
  align-items: flex-start;
  gap: 15px;
  margin-top: 30px;
}

.core-concept-description::before {
  content: "";
  width: 2px;
  height: 150px;
  background: #ffffff;
  flex-shrink: 0;
  margin-top: 5px;
}

.core-concept-description p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.6;
  color: #ffffff;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
  flex: 1;
}

/* 响应式设计 */

/* 笔记本端 (1200px - 1024px) */
@media (max-width: 1200px) and (min-width: 1024px) {
  .core-concepts-items {
    max-width: 1000px;
    padding: 0 20px;
  }

  .core-concept-description {
    max-width: 200px;
  }

  .core-concept-description::before {
    height: 120px;
  }
}

/* 平板端 (1024px - 768px) */
@media (max-width: 1024px) and (min-width: 768px) {
  .core-concepts-section {
    padding: 70px 0;
    min-height: 550px;
  }

  .core-concepts-title {
    font-size: 2.4rem;
    margin-bottom: 80px;
  }

  .core-concepts-items {
    max-width: 900px;
    padding: 0 30px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 50px 40px;
    justify-items: center;
    align-items: start;
  }

  .core-concepts-items::before {
    display: none;
  }

  .core-concept-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: 350px;
  }

  .core-concept-circle {
    width: 100px;
    height: 100px;
    margin-bottom: 20px;
  }

  .core-concept-circle .core-concept-title {
    font-size: 1.1rem;
  }

  .core-concept-description {
    max-width: 100%;
    padding: 0;
    margin-top: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .core-concept-description::before {
    display: none;
  }

  .core-concept-description p {
    font-size: 0.95rem;
    text-align: center;
    max-width: 280px;
  }
}

/* 平板端竖屏 (768px - 600px) */
@media (max-width: 768px) and (min-width: 600px) {
  .core-concepts-section {
    padding: 60px 0;
    min-height: 500px;
  }

  .core-concepts-title {
    font-size: 2.2rem;
    margin-bottom: 60px;
  }

  .core-concepts-items {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 40px 30px;
    justify-items: center;
    align-items: start;
    padding: 0 40px;
  }

  .core-concepts-items::before {
    display: none;
  }

  .core-concept-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: 300px;
  }

  .core-concept-circle {
    width: 90px;
    height: 90px;
    margin-bottom: 18px;
  }

  .core-concept-circle .core-concept-title {
    font-size: 1rem;
  }

  .core-concept-description {
    padding: 0;
    margin-top: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .core-concept-description::before {
    display: none;
  }

  .core-concept-description p {
    font-size: 0.9rem;
    text-align: center;
    max-width: 250px;
  }
}

/* 手机端 (600px - 480px) */
@media (max-width: 600px) and (min-width: 480px) {
  .core-concepts-section {
    padding: 50px 0;
    min-height: 450px;
  }

  .core-concepts-title {
    font-size: 1.9rem;
    margin-bottom: 40px;
  }

  .core-concepts-items {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 35px 25px;
    justify-items: center;
    align-items: start;
    padding: 0 30px;
  }

  .core-concepts-items::before {
    display: none;
  }

  .core-concept-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: 250px;
  }

  .core-concept-circle {
    width: 80px;
    height: 80px;
    margin-bottom: 15px;
  }

  .core-concept-circle .core-concept-title {
    font-size: 0.95rem;
  }

  .core-concept-description {
    padding: 0;
    margin-top: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .core-concept-description::before {
    display: none;
  }

  .core-concept-description p {
    font-size: 0.85rem;
    line-height: 1.5;
    text-align: center;
    max-width: 220px;
  }
}

/* 小屏手机端 (480px以下) */
@media (max-width: 480px) {
  .core-concepts-section {
    padding: 40px 0;
    min-height: 400px;
  }

  .core-concepts-title {
    font-size: 1.6rem;
    margin-bottom: 35px;
  }

  .core-concepts-items {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 30px 20px;
    justify-items: center;
    align-items: start;
    padding: 0 20px;
  }

  .core-concepts-items::before {
    display: none;
  }

  .core-concept-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: 200px;
  }

  .core-concept-circle {
    width: 70px;
    height: 70px;
    margin-bottom: 12px;
  }

  .core-concept-circle .core-concept-title {
    font-size: 0.9rem;
  }

  .core-concept-description {
    padding: 0;
    margin-top: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .core-concept-description::before {
    display: none;
  }

  .core-concept-description p {
    font-size: 0.8rem;
    line-height: 1.4;
    text-align: center;
    max-width: 180px;
  }
}

/* 动画效果 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.core-concept-item {
  animation: fadeInUp 0.8s ease-out;
}

.core-concept-item:nth-child(1) {
  animation-delay: 0.1s;
}
.core-concept-item:nth-child(2) {
  animation-delay: 0.2s;
}
.core-concept-item:nth-child(3) {
  animation-delay: 0.3s;
}
.core-concept-item:nth-child(4) {
  animation-delay: 0.4s;
}

/* 连接线效果 */
.core-concepts-line::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 2px;
  background: #ffffff;
  z-index: 1;
}

.core-concept-item:not(:last-child)::after {
  display: none;
}

@media (max-width: 992px) {
  .core-concept-item:not(:last-child)::after {
    display: none;
  }
}

/*---------------------------------------------------- */
/* 关于苏豪视频样式 */
/*----------------------------------------------------*/
.about-video-section {
  position: relative;
  padding: 50px 0;
  overflow: hidden;
  display: flex;
  align-items: center;
  background-image: url("../img/about/Background-video.webp");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.about-video-content {
  text-align: center;
  margin: 0 auto;
}

.about-video-title {
  font-size: 2.8rem;
  font-weight: 700;
  color: #1a1a1a;
  margin-bottom: 80px;
  text-shadow: none;
}

.about-video-player {
  width: 100%;
  margin-bottom: 80px;
  overflow: hidden;
}

.video-element {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

/* 响应式设计 - 关于苏豪视频 */

/* 笔记本端 (1200px - 1024px) */
@media (max-width: 1200px) and (min-width: 1024px) {
  .about-video-section {
    padding: 90px 0;
    min-height: 550px;
  }

  .about-video-title {
    font-size: 2.2rem;
    margin-bottom: 45px;
  }

  .about-video-player {
    margin-bottom: 60px;
  }
}

/* 平板端 (1024px - 768px) */
@media (max-width: 1024px) and (min-width: 768px) {
  .about-video-section {
    padding: 80px 0;
    min-height: 500px;
  }

  .about-video-title {
    font-size: 2rem;
    margin-bottom: 40px;
  }

  .about-video-player {
    margin-bottom: 50px;
  }
}

/* 平板端竖屏 (768px - 600px) */
@media (max-width: 768px) and (min-width: 600px) {
  .about-video-section {
    padding: 70px 0;
    min-height: 450px;
  }

  .about-video-content {
    padding: 0 20px;
  }

  .about-video-title {
    font-size: 1.8rem;
    margin-bottom: 35px;
  }

  .about-video-player {
    margin-bottom: 40px;
  }
}

/* 手机端 (600px - 480px) */
@media (max-width: 600px) and (min-width: 480px) {
  .about-video-section {
    padding: 60px 0;
    min-height: 400px;
  }

  .about-video-content {
    padding: 0 15px;
  }

  .about-video-title {
    font-size: 1.6rem;
    margin-bottom: 30px;
  }

  .about-video-player {
    margin-bottom: 35px;
  }
}

/* 小屏手机端 (480px以下) */
@media (max-width: 480px) {
  .about-video-section {
    padding: 50px 0;
    min-height: 350px;
  }

  .about-video-content {
    padding: 0 10px;
  }

  .about-video-title {
    font-size: 1.4rem;
    margin-bottom: 25px;
  }

  .about-video-player {
    margin-bottom: 30px;
  }
}

/* 视频播放器自定义样式 */
.video-element::-webkit-media-controls-panel {
  background-color: rgba(0, 0, 0, 0.8);
}

.video-element::-webkit-media-controls-play-button,
.video-element::-webkit-media-controls-pause-button {
  border-radius: 50%;
}

.video-element::-webkit-media-controls-timeline {
  background-color: rgba(255, 255, 255, 0.3);
  border-radius: 5px;
}

.video-element::-webkit-media-controls-current-time-display,
.video-element::-webkit-media-controls-time-remaining-display {
  color: #ffffff;
  font-weight: 500;
}

/* 视频加载状态 */
.video-element::before {
  content: "视频加载中...";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #ffffff;
  font-size: 1rem;
  z-index: 1;
  display: none;
}

.video-element[poster]::before {
  display: block;
}

/* 视频悬停效果 */
.about-video-player:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
  transition: all 0.3s ease;
}

.about-video-player {
  transition: all 0.3s ease;
}

/*---------------------------------------------------- */
/* 企业动态样式 */
/*----------------------------------------------------*/
.enterprise-dynamics-section {
  padding: 80px 0;
  background-color: #f8f9fa;
}

.enterprise-dynamics-content {
  text-align: center;
}

.enterprise-dynamics-title {
  font-size: 2.8rem;
  font-weight: 700;
  color: #1a1a1a;
  margin-bottom: 60px;
  text-shadow: none;
}

.enterprise-dynamics-cards {
  display: flex;
  justify-content: space-between;
  gap: 50px;
  max-width: 1400px;
  margin: 0 auto;
}

.dynamics-card {
  flex: 1;
  background: #ffffff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
}

.dynamics-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
  text-decoration: none;
  color: inherit;
}

.card-image {
  width: 100%;
  height: 250px;
  overflow: hidden;
  position: relative;
  padding: 15px;
  box-sizing: border-box;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
  border-radius: 8px;
}

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

.card-content {
  text-align: left;
  padding: 10px 15px 30px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-date {
  font-size: 1.2rem;
  color: #131313;
  font-weight: 200;
}

.card-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: #131313;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-description {
  font-size: 1rem;
  color: #131313;
  line-height: 1.6;
  margin: 0;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 8px;
}

/* 响应式设计 - 企业动态 */

/* 笔记本端 (1200px - 1024px) */
@media (max-width: 1200px) and (min-width: 1024px) {
  .enterprise-dynamics-section {
    padding: 70px 0;
  }

  .enterprise-dynamics-title {
    font-size: 2.4rem;
    margin-bottom: 50px;
  }

  .enterprise-dynamics-cards {
    gap: 25px;
    max-width: 1000px;
  }

  .card-content {
    padding: 8px 12px 25px;
  }

  .card-title {
    font-size: 1.1rem;
  }

  .card-description {
    font-size: 0.9rem;
  }
}

/* 平板端 (1024px - 768px) */
@media (max-width: 1024px) and (min-width: 768px) {
  .enterprise-dynamics-section {
    padding: 60px 0;
  }

  .enterprise-dynamics-title {
    font-size: 2.2rem;
    margin-bottom: 45px;
  }

  .enterprise-dynamics-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 25px;
    max-width: 800px;
  }

  .dynamics-card:nth-child(3) {
    grid-column: 1 / -1;
    max-width: 400px;
    margin: 0 auto;
  }

  .card-image {
    height: 180px;
    padding: 12px;
  }

  .card-content {
    padding: 8px 12px 25px;
  }

  .card-date {
    font-size: 1.1rem;
  }

  .card-title {
    font-size: 1.05rem;
    margin-bottom: 8px;
  }

  .card-description {
    font-size: 0.9rem;
  }
}

/* 平板端竖屏 (768px - 600px) */
@media (max-width: 768px) and (min-width: 600px) {
  .enterprise-dynamics-section {
    padding: 50px 0;
  }

  .enterprise-dynamics-title {
    font-size: 2rem;
    margin-bottom: 40px;
  }

  .enterprise-dynamics-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 20px;
    max-width: 700px;
    padding: 0 20px;
  }

  .dynamics-card:nth-child(3) {
    grid-column: 1 / -1;
    max-width: 350px;
    margin: 0 auto;
  }

  .card-image {
    height: 160px;
    padding: 10px;
  }

  .card-content {
    padding: 8px 10px 20px;
  }

  .card-date {
    font-size: 1rem;
  }

  .card-title {
    font-size: 0.95rem;
    margin-bottom: 8px;
  }

  .card-description {
    font-size: 0.85rem;
  }
}

/* 手机端 (600px - 480px) */
@media (max-width: 600px) and (min-width: 480px) {
  .enterprise-dynamics-section {
    padding: 40px 0;
  }

  .enterprise-dynamics-title {
    font-size: 1.8rem;
    margin-bottom: 35px;
  }

  .enterprise-dynamics-cards {
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding: 0 15px;
  }

  .dynamics-card {
    max-width: 100%;
  }

  .card-image {
    height: 180px;
    padding: 12px;
  }

  .card-content {
    padding: 6px 8px 15px;
  }

  .card-date {
    font-size: 0.95rem;
  }

  .card-title {
    font-size: 0.9rem;
    margin-bottom: 8px;
  }

  .card-description {
    font-size: 0.85rem;
  }
}

/* 小屏手机端 (480px以下) */
@media (max-width: 480px) {
  .enterprise-dynamics-section {
    padding: 35px 0;
  }

  .enterprise-dynamics-title {
    font-size: 1.6rem;
    margin-bottom: 30px;
  }

  .enterprise-dynamics-cards {
    display: flex;
    flex-direction: column;
    gap: 18px;
    padding: 0 10px;
  }

  .dynamics-card {
    max-width: 100%;
  }

  .card-image {
    height: 160px;
    padding: 10px;
  }

  .card-content {
    padding: 5px 6px 12px;
  }

  .card-date {
    font-size: 0.85rem;
  }

  .card-title {
    font-size: 0.85rem;
    margin-bottom: 8px;
  }

  .card-description {
    font-size: 0.8rem;
    line-height: 1.5;
  }
}

/* 动画效果 */
.dynamics-card {
  animation: fadeInUp 0.8s ease-out;
}

.dynamics-card:nth-child(1) {
  animation-delay: 0.1s;
}
.dynamics-card:nth-child(2) {
  animation-delay: 0.2s;
}
.dynamics-card:nth-child(3) {
  animation-delay: 0.3s;
}

/* 卡片悬停效果增强 */
.dynamics-card:hover .card-title {
  color: #007bff;
  transition: color 0.3s ease;
}

/* 图片加载状态 */
.card-image::before {
  content: "图片加载中...";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #999;
  font-size: 0.9rem;
  z-index: 1;
  display: none;
}

.card-image img[src=""]::before {
  display: block;
}