/* 全局样式重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* 根元素样式 */
:root {
  --primary-color: #ff6b35;
  --secondary-color: #4a90e2;
  --accent-color: #f39c12;
  --text-dark: #2c3e50;
  --text-light: #ecf0f1;
  --bg-overlay: rgba(0, 0, 0, 0.3);
  --gradient-orange: linear-gradient(135deg, #ff9a56, #ff6b35);
  --gradient-blue: linear-gradient(135deg, #667eea, #764ba2);
  --gradient-teal: linear-gradient(135deg, #48c6ef, #6f86d6);
  --font-chinese: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-english: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

/* 基础HTML和Body样式 */
html,
body {
  height: 100%;
  font-family: var(--font-chinese);
  overflow-x: hidden;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: #f8f9fa;
  color: var(--text-light);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  opacity: 0;
  animation: fadeIn 0.5s ease-in-out forwards;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* 顶部白色头部区域 */
.top-header {
  /* background: linear-gradient(180deg, #ffffff 0%, #fafbfc 100%); */
  background: rgba(255, 255, 255, 0.8);
  border-bottom: 1px solid #e9ecef;
  padding: 0;
  position: relative;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  position: fixed;
  width: 100%;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
}

.header-content {
  /* max-width: 1200px; */
  margin: 0 auto;
  padding: 6px 120px;
  animation: slideDown 0.6s ease-out;
}

@keyframes slideDown {
  from {
    transform: translateY(-20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* 视频背景区域 */
.video-section {
  flex: 1;
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.8s ease-out 0.3s both;
}

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

.video-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  overflow: hidden;
}

/* 占位图片样式 */
.placeholder-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url("./assets/video-bg.jpg") no-repeat center center;
  background-size: cover;
  z-index: 2;
  opacity: 1;
  transition: opacity 0.5s ease-out;
}

.video-background.video-loaded .placeholder-image {
  opacity: 0;
  pointer-events: none;
}

/* 视频元素样式 */
.video-background video {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  transform: translateX(-50%) translateY(-50%);
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.5s ease-out;
  z-index: 1;
}

.video-background.video-loaded video {
  opacity: 1;
}

/* 视频叠加层 */
.video-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  /* background: linear-gradient(
    135deg,
    rgba(255, 154, 86, 0.7) 0%,
    rgba(255, 107, 53, 0.6) 35%,
    rgba(72, 198, 239, 0.6) 65%,
    rgba(111, 134, 214, 0.7) 100%
  ); */
  z-index: 2;
}

/* 备用背景（当视频加载失败时） */
.video-background.fallback-bg {
  background: linear-gradient(
    135deg,
    #ff9a56 0%,
    #ff6b35 35%,
    #48c6ef 65%,
    #6f86d6 100%
  );
}

/* 视频加载提示 */
.video-loading {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--text-light);
  font-size: 1.2rem;
  z-index: 5;
  text-align: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.video-loading.show {
  opacity: 1;
}

.video-loading .loading-spinner {
  width: 30px;
  height: 30px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top: 3px solid var(--text-light);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 1rem;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* Logo区域样式 */
.logo-section {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo-placeholder {
  width: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-image {
  width: 100%;
}

/* .logo-placeholder:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(255, 107, 53, 0.3);
} */

.logo-text {
  font-size: 1.2rem;
  font-weight: 700;
  color: white;
  font-family: var(--font-english);
}

.site-title {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.chinese-title {
  font-family: Source Han Sans CN;
  font-weight: 400;
  font-size: 22px;
  color: #000000;
}

.english-title {
  font-family: Source Han Sans CN;
  font-weight: 400;
  font-size: 14px;
  color: #000000;
  margin-top: -5px;
}

/* 主要内容区域 */
.main-content {
  position: relative;
  z-index: 10;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  /* gap: 4rem; */
  padding: 0 148px;
  align-items: center;
  min-height: calc(100vh - 100px);
  margin-top: 100px;
}

/* 左侧内容 */
.left-content {
  text-align: left;
  animation: slideInLeft 1s ease-out;
  /* border: 1px solid blue; */
  /* display: flex;
  flex-direction: column; */
}

.main-title {
  font-family: Source Han Sans CN;
  font-weight: bold;
  font-size: 65px;
  color: #000000;
}

.subtitle-group {
  margin-bottom: 50px;
}

.subtitle {
  font-family: Source Han Sans CN;
  font-weight: bold;
  font-size: 31px;
  color: #000000;
}

/* 中间装饰元素 */
.center-decoration {
  justify-self: center;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: pulse 2s infinite;
}

.arrow-circle {
  width: 100px;
  height: 100px;
  /* cursor: pointer; */
  /* background: rgba(255, 255, 255, 0.15); */
  /* border-radius: 50%; */
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

/* .arrow-circle:hover {
  transform: scale(1.1);
} */

.arrow-right {
  width: 100%;
}

/* 右侧内容 */
.right-content {
  text-align: left;
  animation: slideInRight 1s ease-out;
  margin-left: 167px;
  /* display: flex; */
  /* flex-direction: column; */
  /* justify-content: space-between; */
  /* border: 1px solid red; */
}

.ie-badge {
  display: flex;
  align-items: center;
  /* gap: 0.5rem; */
  /* margin-bottom: 30px; */
  /* margin-top: 12px; */
}
.ie-image {
  width: 181px;
}

.ie-text {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-light);
  background: linear-gradient(45deg, #4a90e2, #667eea);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-family: var(--font-english);
}

.international-text {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-light);
  opacity: 0.8;
  line-height: 1.2;
  font-family: var(--font-english);
}

.english-main-title {
  font-size: 30px;
  font-weight: bold;
  color: var(--text-light);
  /* margin-bottom: 48px;
  margin-top: 10px; */
  line-height: 1.4;
  height: 140px;
  padding-top: 40px;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
  font-family: var(--font-english);
}

/* 按钮组 */
.button-group {
  display: flex;
  gap: 1rem;
  justify-content: flex-start;
  flex-wrap: wrap;
  height: 70px;
  padding-top: 24px;
}

/* 按钮样式 */
.cta-button {
  border: none;
  border-radius: 4px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
  min-width: 140px;
  font-family: inherit;
  font-family: Source Han Sans CN;
  font-weight: 500;
  width: 300px;
  /* height: 68px; */
  height: 59px;
  font-size: 31px;
  color: #082f48;
  /* background-color: rgba(255, 255, 255, 0.1); */
}

.cta-button.first {
  width: 171px !important;
  height: 59px;
  color: #674a32;
  background: rgba(255, 255, 255, 0.25);
  border: 2px solid rgba(255, 255, 255, 0.95);
  border-radius: 12px;
  font-weight: bold;
  font-size: 31px;
  font-family: Source Han Sans CN, sans-serif;
  box-shadow: 
    0 8px 16px rgba(255, 255, 255, 0.25),
    0 12px 20px rgba(255, 255, 255, 0.2),
    0 0 0 1px rgba(255, 255, 255, 0.4) inset,
    0 8px 16px -2px rgba(255, 107, 53, 0.35),
    0 -4px 8px rgba(255, 255, 255, 0.2) inset,
    0 2px 4px rgba(103, 74, 50, 0.1),
    0 4px 12px rgba(103, 74, 50, 0.15);
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
  transform: translateY(-3px);
  text-shadow: 0 1px 2px rgba(255, 255, 255, 0.2);
}

.cta-button.first::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.15) 0%,
    rgba(255, 255, 255, 0.08) 30%,
    rgba(255, 255, 255, 0.2) 50%,
    rgba(255, 255, 255, 0.08) 70%,
    rgba(255, 255, 255, 0.15) 100%
  );
  opacity: 0.6;
  transition: opacity 0.3s ease;
}

.cta-button.first::after {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    rgba(255, 255, 255, 0.6),
    rgba(255, 255, 255, 0.3),
    transparent
  );
  transform: skewX(-15deg);
  transition: left 0.8s ease;
  z-index: 1;
  pointer-events: none;
}

.cta-button.first:hover::after {
  left: 100%;
}

.cta-button.first:hover {
  background: rgba(255, 255, 255, 0.3);
  border: 2px solid rgba(255, 255, 255, 1);
  color: #674a32;
  transform: translateY(-4px);
  box-shadow: 
    0 12px 24px rgba(255, 255, 255, 0.3),
    0 16px 32px rgba(255, 255, 255, 0.25),
    0 0 0 1px rgba(255, 255, 255, 0.5) inset,
    0 12px 20px -2px rgba(255, 107, 53, 0.4),
    0 -4px 10px rgba(255, 255, 255, 0.25) inset,
    0 4px 8px rgba(103, 74, 50, 0.15),
    0 8px 16px rgba(103, 74, 50, 0.2);
}

.cta-button.first:hover::before {
  opacity: 0.8;
}

.cta-button.first:hover::after {
  left: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.4),
    rgba(255, 255, 255, 0.8),
    rgba(255, 255, 255, 0.4),
    transparent
  );
}

.cta-button.first span {
  position: relative;
  z-index: 2;
  color: #674a32;
  font-weight: bold;
  text-shadow: 0 1px 1px rgba(255, 255, 255, 0.4);
}

.cta-button.first:active {
  transform: translateY(-1px);
  box-shadow: 
    0 5px 10px rgba(255, 255, 255, 0.2),
    0 8px 16px rgba(255, 255, 255, 0.15),
    0 0 0 1px rgba(255, 255, 255, 0.3) inset,
    0 4px 8px -2px rgba(255, 107, 53, 0.25),
    0 -2px 4px rgba(255, 255, 255, 0.15) inset,
    0 1px 2px rgba(103, 74, 50, 0.1),
    0 2px 6px rgba(103, 74, 50, 0.15);
}

/* .cta-button.first::before,
.cta-button.first::after {
  display: none !important;
} */

.cta-button.secondary {
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(25px);
  -webkit-backdrop-filter: blur(25px);
  border: 2px solid rgba(255, 255, 255, 0.8);
  border-radius: 8px;
  /* box-shadow: 
    0 4px 15px rgba(0, 0, 0, 0.05),
    inset 0 1px 0 rgba(255, 255, 255, 0.1),
    0 0 0 1px rgba(255, 255, 255, 0.03); */
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
  box-shadow: 0px 4px 6px 1px rgba(225, 210, 203, 0.45);
  margin-top: 5px;
}

.cta-button.secondary::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.15) 0%,
    rgba(255, 255, 255, 0.08) 30%,
    rgba(255, 255, 255, 0.2) 50%,
    rgba(255, 255, 255, 0.08) 70%,
    rgba(255, 255, 255, 0.15) 100%
  );
  opacity: 0.6;
  transition: opacity 0.3s ease;
}

/* 光泽效果 */
.cta-button.secondary::after {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    rgba(255, 255, 255, 0.6),
    rgba(255, 255, 255, 0.3),
    transparent
  );
  transform: skewX(-15deg);
  transition: left 0.8s ease;
  z-index: 1;
  pointer-events: none;
}

.cta-button.secondary:hover::after {
  left: 100%;
}

.cta-button.secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border: 2px solid rgba(255, 255, 255, 1);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 0 25px rgba(255, 255, 255, 0.15);
}

.cta-button.secondary:hover::before {
  opacity: 0.8;
}

.cta-button.secondary:hover::after {
  left: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.4),
    rgba(255, 255, 255, 0.8),
    rgba(255, 255, 255, 0.4),
    transparent
  );
}

.cta-button.secondary span {
  position: relative;
  z-index: 2;
}



@keyframes shimmerHover {
  0%,
  100% {
    opacity: 0.8;
    transform: skewX(-15deg) translateX(-5px);
  }
  50% {
    opacity: 1;
    transform: skewX(-15deg) translateX(5px);
  }
}

/* 动画效果 */
@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.8;
  }
  50% {
    transform: scale(1.05);
    opacity: 1;
  }
}
@media screen and (min-width: 1920px) {
  .english-main-title {
    font-size: 27px;
  }
}
/* 响应式设计 - 1000px宽度适配 */
@media screen and (max-width: 2020px) {
  .main-content {
    padding: 0 128px;
  }
  .header-content {
    padding-left: 80px;
  }
  .right-content {
    margin-left: 127px;
  }
  /* .ie-badge {
    margin-top: 16px;
  } */
  /* .english-main-title {
    margin-bottom: 46px;
  } */
}

/* 响应式设计 - 1000px宽度适配 */
@media screen and (max-width: 1920px) {
  .main-content {
    padding: 0 108px;
  }
  .header-content {
    padding-left: 80px;
  }
  .right-content {
    margin-left: 127px;
  }
  .main-title {
    font-size: 64px;
  }
  .subtitle {
    font-size: 30px;
  }
  .english-main-title {
    font-size: 26px;
  }
}

/* 响应式设计 - 1000px宽度适配 */
@media screen and (max-width: 1820px) {
  .main-content {
    padding: 0 88px;
  }
  .header-content {
    padding-left: 60px;
  }
  .right-content {
    margin-left: 107px;
  }
  .main-title {
    font-size: 60px;
  }
  .subtitle {
    font-size: 28px;
  }
  .cta-button {
    width: 260px !important;
    height: 60px !important;
    font-size: 26px !important;
  }
  .main-title {
    font-size: 62px;
  }
  .cta-button.third {
    height: 68px !important;
  }
  .english-main-title {
    font-size: 25px;
  }
}

/* 响应式设计 - 1000px宽度适配 */
@media screen and (max-width: 1720px) {
  .main-content {
    padding: 0 68px;
  }
  .header-content {
    padding-left: 40px;
  }
  .right-content {
    margin-left: 87px;
  }
  .main-title {
    font-size: 60px;
  }
  .subtitle {
    font-size: 28px;
  }
  .cta-button {
    width: 240px !important;
    height: 58px !important;
    font-size: 24px !important;
  }
  .button-group {
    gap: 0.6rem;
  }
  .english-main-title {
    font-size: 24px;
    height: 130px;
  }
}

/* 响应式设计 - 1620px开始渐进式缩放 */
@media screen and (max-width: 1620px) {
  .main-content {
    padding: 0 60px;
  }
  .header-content {
    padding: 6px 60px;
  }
  .right-content {
    margin-left: 80px;
  }
  .main-title {
    font-size: 60px;
  }
  .subtitle {
    font-size: 28px;
  }
  .cta-button {
    width: 240px !important;
    height: 58px !important;
    font-size: 24px !important;
  }
  .button-group {
    gap: 0.5rem;
  }
  .english-main-title {
    font-size: 23px;
  }
}

@media screen and (max-width: 1520px) {
  .main-content {
    padding: 0 55px;
  }
  .header-content {
    padding: 6px 55px;
  }
  .right-content {
    margin-left: 75px;
  }
  .main-title {
    font-size: 58px;
  }
  .subtitle {
    font-size: 27px;
  }
  .cta-button {
    width: 250px !important;
    height: 58px !important;
    font-size: 25px !important;
  }
  .english-main-title {
    font-size: 22px;
    height: 120px;
  }
}

@media screen and (max-width: 1420px) {
  .main-content {
    padding: 0 50px;
  }
  .header-content {
    padding: 6px 50px;
  }
  .right-content {
    margin-left: 70px;
  }
  .main-title {
    font-size: 56px;
  }
  .subtitle {
    font-size: 26px;
  }
  .cta-button {
    width: 240px !important;
    height: 56px !important;
    font-size: 24px !important;
  }
  .cta-button.third {
    height: 66px !important;
  }
  .english-main-title {
    font-size: 21px;
    height: 110px;
  }
}

@media screen and (max-width: 1320px) {
  .main-content {
    padding: 0 45px;
  }
  .header-content {
    padding: 6px 45px;
  }
  .right-content {
    margin-left: 65px;
  }
  .main-title {
    font-size: 54px;
  }
  .subtitle {
    font-size: 25px;
  }
  .cta-button {
    width: 220px !important;
    height: 54px !important;
    font-size: 23px !important;
  }
  .cta-button.third {
    height: 64px !important;
  }
  .english-main-title {
    font-size: 20px;
    height: 100px;
    padding-top: 20px;
  }
}

@media screen and (max-width: 1220px) {
  .main-content {
    padding: 0 40px;
  }
  .header-content {
    padding: 6px 40px;
  }
  .right-content {
    margin-left: 60px;
  }
  .main-title {
    font-size: 52px;
  }
  .subtitle {
    font-size: 24px;
  }
  .cta-button {
    width: 210px !important;
    height: 52px !important;
    font-size: 22px !important;
  }
}

@media screen and (max-width: 1120px) {
  .main-content {
    padding: 0 35px;
  }
  .header-content {
    padding: 6px 35px;
  }
  .right-content {
    margin-left: 55px;
  }
  .main-title {
    font-size: 50px;
  }
  .subtitle {
    font-size: 23px;
  }
  .cta-button {
    width: 200px !important;
    height: 50px !important;
    font-size: 21px !important;
  }
}

@media screen and (max-width: 1020px) {
  .main-content {
    padding: 0 30px;
  }
  .header-content {
    padding: 6px 30px;
  }
  .right-content {
    margin-left: 50px;
  }
  .main-title {
    font-size: 48px;
  }
  .subtitle {
    font-size: 22px;
  }
  .cta-button {
    width: 190px !important;
    height: 48px !important;
    font-size: 20px !important;
  }
  .cta-button.third {
  }
}

@media screen and (max-width: 1000px) {
  .main-content {
    display: flex;
    flex-direction: column;
    margin-top: 100px;
  }
  .center-decoration {
    /* transform: rotate(90deg) scale(0.7) !important; */
    margin: 20px 0;
    width: 80%;
    margin-left: 10%;
    justify-content: flex-start;
  }
  .center-decoration .arrow-circle {
    transform: rotate(90deg) scale(0.7) !important;
  }
  .left-content {
    width: 80%;
    margin-left: 10%;
  }
  .right-content {
    width: 80%;
    margin-left: 10%;
  }
}

@media screen and (max-width: 800px) {
  .logo-placeholder {
    width: 40px;
  }
  .site-title {
    font-size: 12px;
  }
  .main-content {
    min-height: calc(100vh - 70px);
    margin-top: 20px;
    padding: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
  }
  .main-title {
    font-size: 30px;
  }
  .subtitle {
    font-size: 18px;
  }
  .subtitle-group {
    margin-bottom: 20px;
  }
  .center-decoration {
    margin: 10px 0;
  }
  .arrow-circle {
    width: 60px;
    height: 60px;
  }
  .center-decoration {
    width: 80%;
    margin-left: 10%;
  }
  .left-content {
    width: 80%;
    margin-left: 10%;
  }
  .right-content {
    width: 80%;
    margin-left: 10%;
  }
  .english-main-title {
    font-size: 16px;
    height: 80px;
  }
}