/* ======================== */
/* About 页面样式           */
/* ======================== */
/* --- Banner 区域 --- */
.about-banner {
  position: relative;
  width: 100%;
  height: 590px;
  overflow: hidden;
}
.about-banner__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: url(../assets/img/about_banner.png) center no-repeat;
  background-size: auto 100%;
}
.about-banner__content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-end;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  padding-bottom: 45px;
}
.about-banner__label {
  font-family: var(--font-primary);
  font-weight: bold;
  font-size: 86px;
  line-height: 66px;
  text-transform: uppercase;
  color: #ffffff;
  margin-bottom: 16px;
}
.about-banner__title {
  font-family: var(--font-primary);
  font-weight: 400;
  font-size: 38px;
  line-height: 58px;
  color: #ffffff;
  letter-spacing: 1px;
  max-width: 800px;
}
/* --- 企业简介 --- */
.about-profile {
  padding: 100px 0 80px;
  background: #fff;
}
.about-profile__inner {
  display: flex;
  flex-direction: column;
  gap: 60px;
}
/* 上半部分：左文右图 */
.about-profile__top {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.about-profile__company {
  font-weight: 700;
  font-size: 36px;
  line-height: 56px;
  color: var(--color-primary);
  text-transform: uppercase;
  margin-bottom: 50px;
}
.about-profile__desc {
  font-weight: 500;
  font-size: 20px;
  line-height: 1.9;
  color: #333;
  letter-spacing: 0.3px;
}
/* 图片区域 + 装饰角 */
.about-profile__image {
  position: relative;
  width: 660px;
  height: 520px;
  margin-left: auto;
  padding: 30px;
}
.about-profile__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 20px;
  position: relative;
  z-index: 1;
}
/* 右上角装饰块 */
.about-profile__deco-tr {
  position: absolute;
  top: 0;
  right: 0;
  width: 210px;
  height: 210px;
  background: #2e73f3;
  border-radius: 20px;
  z-index: 0;
}
/* 左下角装饰块 */
.about-profile__deco-bl {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 70px;
  height: 70px;
  background: #373f5e;
  border-radius: 12px;
  z-index: 0;
}
/* 底部统计条 */
.about-profile__stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  border: 1px solid #112547;
  border-radius: 30px;
  padding: 30px 50px;
}
.about-profile__stat {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  justify-content: center;
}
.about-profile__stat-value {
  font-family: 'Inter', sans-serif;
  font-weight: 400;
  font-size: 48px;
  line-height: 56px;
  color: var(--color-primary);
  text-transform: uppercase;
}
.about-profile__stat-label {
  font-family: 'Inter', sans-serif;
  font-size: 18px;
  line-height: 26px;
  color: #666;
}
.about-profile__stat-divider {
  width: 1px;
  height: 60px;
  background: #999;
  flex-shrink: 0;
}
/* --- 发展历程 --- */
.about-history {
  position: relative;
  padding: 100px 0;
  overflow: hidden;
  background: #fff;
}
.about-history__inner {
  display: grid;
  grid-template-columns: 500px 1fr;
  gap: 80px;
  align-items: start;
  overflow: visible;
}
/* 左侧：标题+描述 */
.about-history__header {
  position: relative;
  padding-top: 10px;
  overflow: visible;
}
.about-history__deco {
  position: absolute;
  top: 0;
  left: -20px;
  width: 715px;
  height: 610px;
  z-index: 0;
  pointer-events: none;
}
.about-history__title {
  position: relative;
  z-index: 1;
  font-weight: 700;
  font-size: 36px;
  line-height: 1.83em;
  color: #112547;
  text-transform: uppercase;
  margin-bottom: 30px;
}
.about-history__intro {
  position: relative;
  z-index: 1;
  font-weight: 500;
  font-size: 14px;
  line-height: 2.71em;
  color: #333;
  text-align: left;
}
/* 年份内容面板 */
.about-history__panel {
  display: none;
  position: relative;
  z-index: 1;
}
.about-history__panel--active {
  display: block;
}
/* 右侧：垂直时间轴 */
.about-history__timeline {
  position: relative;
  height: 700px;
}
/* 垂直线 - 居中偏左 */
.about-history__line {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 30px;
  width: 1px;
  background: #969696;
}
/* 通用项 */
.about-history__item {
  position: absolute;
  cursor: pointer;
  transition: opacity 0.3s ease;
}
.about-history__item:hover {
  opacity: 0.8;
}
/* 圆点 - 在线上 */
.about-history__dot {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 12px;
  height: 12px;
  border-radius: 6px;
  background: #333;
  border: 2px solid #fff;
  z-index: 2;
  backdrop-filter: blur(5px);
}
.about-history__dot--active {
  background: #125ad3;
}
/* 左侧项(年份+事件在线左边, 文字右对齐) */
.about-history__item--left {
  right: calc(50% + 20px);
  width: calc(50% - 40px);
  text-align: right;
}
.about-history__item--left .about-history__dot {
  left: auto;
  right: -26px;
  transform: none;
}
/* 右侧项(年份+事件在线右边, 文字左对齐) */
.about-history__item--right {
  left: calc(50% + 20px);
  width: calc(50% - 40px);
  text-align: left;
}
.about-history__item--right .about-history__dot {
  right: auto;
  left: -26px;
  transform: none;
}
/* 精确Y坐标 */
.about-history__item:nth-child(2) {
  top: 0;
}
.about-history__item:nth-child(3) {
  top: 130px;
}
.about-history__item:nth-child(4) {
  top: 260px;
}
.about-history__item:nth-child(5) {
  top: 390px;
}
.about-history__item:nth-child(6) {
  top: 520px;
}
/* 年份 */
.about-history__year {
  font-family: 'Impact', sans-serif;
  font-weight: 400;
  font-size: 48px;
  line-height: 1em;
  color: #333;
  display: block;
  margin-bottom: 6px;
}
.about-history__year--active {
  color: #2d7cff;
}
/* 事件描述 */
.about-history__event {
  font-size: 16px;
  line-height: 1.875em;
  color: #333;
}
.about-history__event--active {
  font-weight: 500;
  color: #2d7cff;
}
/* 高亮卡片(2014) */
.about-history__card {
  display: inline-block;
  background: #fff;
  border-radius: 20px;
  padding: 30px 40px;
  width: 280px;
  box-shadow: 0 0 180px rgba(14, 27, 49, 0.17);
}
/* --- Purpose / Vision / Values --- */
.about-spirit {
  position: relative;
  min-height: 1100px;
  overflow: hidden;
}
.about-spirit__bg {
  position: absolute;
  inset: 0;
  background: url(../assets/img/about_pvv.png) center top no-repeat;
  background-size: 1920px 1100px;
  z-index: 0;
}
.about-spirit__inner {
  position: relative;
  z-index: 3;
  padding-top: 100px;
  padding-bottom: 80px;
}
.about-spirit__content {
  height: 664px;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.about-spirit__item {
  padding: 0;
}
.about-spirit__title {
  font-weight: 700;
  font-size: 36px;
  line-height: 48px;
  text-transform: uppercase;
  color: #ffffff;
  text-align: justify;
  margin-bottom: 18px;
}
.about-spirit__divider {
  width: 206px;
  height: 3px;
  background: #ffffff;
  backdrop-filter: blur(5px);
  margin: 18px 0;
}
.about-spirit__desc {
  font-size: 16px;
  font-weight: 400;
  line-height: 2em;
  color: #ffffff;
  margin-bottom: 36px;
}
/* 视频展示区 */
.about-spirit__video {
  position: relative;
  width: 100%;
  max-width: 1440px;
  height: 740px;
  margin: 0 auto;
  border-radius: 32px;
  overflow: hidden;
}
.about-spirit__play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: rgba(17, 37, 71, 0.4);
  border: 2px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(22px);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 2;
  transition:
    background var(--transition-base),
    transform var(--transition-base),
    opacity var(--transition-base);
}
.about-spirit__play:hover {
  background: rgba(41, 120, 254, 0.6);
  transform: translate(-50%, -50%) scale(1.1);
}
.about-spirit__video-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
  cursor: pointer;
}
/* --- About Contact (浅色设计) --- */
.about-contact {
  padding: 173px 0 100px;
  background: #f4f6fa;
}
.about-contact__inner {
  display: grid;
  grid-template-columns: 668px 1fr;
  gap: 50px;
  align-items: start;
}
/* 左侧蓝色信息卡片 */
.about-contact__card {
  position: relative;
  border-radius: 32px;
  overflow: hidden;
  height: 645px;
}
.about-contact__card-bg {
  position: absolute;
  inset: 0;
}
.about-contact__card-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.about-contact__card-content {
  position: relative;
  z-index: 2;
  padding: 50px;
  display: flex;
  flex-direction: column;
  height: 645px;
}
.about-contact__heading {
  font-weight: 700;
  font-size: 36px;
  line-height: 56px;
  color: var(--color-white);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.about-contact__desc {
  font-size: 14px;
  line-height: 24px;
  color: var(--color-white);
  max-width: 388px;
  margin-bottom: auto;
}
.about-contact__card-box {
  width: 510px;
  height: 340px;
  background: rgba(255, 255, 255, 0.18);
  border-radius: 30px;
  padding: 50px 0 50px 50px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.about-contact__label {
  font-weight: 500;
  font-size: 20px;
  color: var(--color-white);
  margin-bottom: 20px;
}
.about-contact__email {
  display: inline-flex;
  align-self: flex-start;
  align-items: center;
  gap: 0;
  height: 48px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 24px;
  padding: 0;
  margin-bottom: 30px;
}
.about-contact__email-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  padding: 12px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.1);
}
.about-contact__email span {
  font-weight: 500;
  font-size: 18px;
  color: var(--color-white);
  padding: 0 20px 0 12px;
  line-height: 48px;
}
.about-contact__socials {
  display: flex;
  gap: 20px;
}
.about-contact__social {
  width: 48px;
  height: 48px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    background var(--transition-base),
    transform var(--transition-base);
}
.about-contact__social:hover {
  background: rgba(255, 255, 255, 0.35);
  transform: translateY(-2px);
}
.about-contact__social img {
  width: 28px;
  height: 28px;
  filter: brightness(0) invert(1);
}
/* 右侧表单 */
.about-contact__form-wrap {
  padding: 47px 0 0;
}
.about-contact__form-title {
  font-weight: 700;
  font-size: 36px;
  line-height: 66px;
  color: #112547;
  text-transform: uppercase;
  margin-bottom: 30px;
}
.about-contact__inner .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 30px;
}
.about-contact__inner .form-input {
  background: rgba(17, 37, 71, 0.1);
  border: 1px solid rgba(17, 37, 71, 0.1);
  border-radius: 20px;
  padding: 0 30px;
  height: 62px;
  font-size: 12px;
  color: #112547;
  width: 100%;
  backdrop-filter: blur(18px);
  transition:
    border-color var(--transition-base),
    background var(--transition-base);
}
.about-contact__inner .form-input::placeholder {
  color: rgba(17, 37, 71, 0.5);
}
.about-contact__inner .form-input:focus {
  border-color: rgba(17, 37, 71, 0.3);
  background: rgba(17, 37, 71, 0.06);
}
.about-contact__inner .form-textarea {
  min-height: 206px;
  resize: vertical;
  margin-bottom: 30px;
  padding-top: 20px;
}
.about-contact__form-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.about-contact__privacy {
  font-size: 14px;
  line-height: 24px;
  color: rgba(17, 37, 71, 0.5);
  max-width: 388px;
}
.about-contact__submit {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  background: #112547;
  border-radius: 20px;
  padding: 13px 36px;
  border: none;
  cursor: pointer;
  transition:
    background var(--transition-base),
    transform var(--transition-base);
  white-space: nowrap;
}
.about-contact__submit:hover {
  background: #1a3768;
  transform: translateY(-2px);
}
.about-contact__submit span:first-child {
  font-weight: 500;
  font-size: 24px;
  color: var(--color-white);
}
.about-contact__submit-arrow {
  font-size: 22px;
  color: var(--color-white);
  transition: transform var(--transition-base);
}
.about-contact__submit:hover .about-contact__submit-arrow {
  transform: translateX(3px);
}
/* --- About Contact 响应式 --- */
@media (max-width: 1199px) {
  .about-contact__inner {
    grid-template-columns: 1fr 1fr;
  }
  .about-contact__heading {
    font-size: 28px;
    line-height: 44px;
  }
  .about-contact__card-content {
    padding: 36px;
    min-height: auto;
  }
  .about-contact__form-title {
    font-size: 28px;
    line-height: 48px;
  }
}
@media (max-width: 767px) {
  .about-contact {
    padding: 40px 0;
  }
  .about-contact__inner {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .about-contact__card {
    min-height: auto;
  }
  .about-contact__card-content {
    padding: 30px;
    min-height: auto;
  }
  .about-contact__heading {
    font-size: 22px;
    line-height: 34px;
  }
  .about-contact__form-wrap {
    padding: 0;
  }
  .about-contact__form-title {
    font-size: 22px;
    line-height: 36px;
  }
  .about-contact__inner .form-row {
    grid-template-columns: 1fr;
  }
  .about-contact__inner .form-textarea {
    min-height: 120px;
  }
  .about-contact__form-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .about-contact__submit {
    width: 100%;
    justify-content: center;
  }
}
/* ======================== */
/* 响应式布局               */
/* ======================== */
@media (max-width: 1200px) {
  .about-profile__top {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .about-history__inner {
    grid-template-columns: 1fr;
    gap: 50px;
  }
}

@media (max-width: 1024px) {
  /* Profile 区块 */
  .about-profile__text {
    order: 2;
  }
  .about-profile__image {
    order: 1;
    width: 100%;
    height: 400px;
    margin-left: 0;
  }
  .about-profile__image img {
    height: 100%;
  }

  /* Spirit 区块 */
  .about-spirit__inner {
    grid-template-columns: 1fr;
    height: auto;
  }
  .about-spirit__content {
    order: 1;
    padding: 60px 40px;
  }
  .about-spirit__video {
    order: 2;
    width: 100%;
    height: 400px;
  }

  /* History 区块 */
  .about-history__deco {
    width: 100%;
    opacity: 0.3; /* 防遮挡文字 */
  }

  /* Contact 区块 */
  .about-contact__inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .about-contact__card {
    order: 1;
  }
  .about-contact__scene {
    order: 2;
    height: 400px;
  }
}

@media (max-width: 992px) {
  .about-banner {
    height: 450px;
  }
  .about-banner__label {
    font-size: 56px;
  }
  .about-banner__title {
    font-size: 28px;
  }
  .about-pvv__cards {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .about-certs__gallery {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .about-banner {
    height: 400px;
  }
  .about-banner__label {
    font-size: 40px;
  }
  .about-banner__title {
    font-size: 22px;
  }
  .about-profile {
    padding: 60px 0;
  }
  .about-profile__company {
    font-size: 24px;
  }
  .about-profile__stats {
    flex-direction: column;
    gap: 24px;
    align-items: flex-start;
  }
  .about-profile__stat {
    justify-content: flex-start;
  }
  .about-profile__stat-divider {
    display: none;
  }
  .about-profile__image {
    height: 250px;
    padding: 0;
  }

  /* Spirit 区块 */
  .about-spirit__bg {
    background: url(../assets/img/about_pvv_small.png);
    background-size: 100% 100%;
    background-position: center top;
  }
  .about-spirit__content {
    width: 100%;
    height: auto;
    padding: 50px 30px;
    box-sizing: border-box;
  }
  .about-spirit__title {
    font-size: 32px;
  }
  .about-spirit__video {
    width: 100%;
    height: 250px;
    box-sizing: border-box;
  }

  /* History 区块 */
  .about-history {
    padding: 60px 0;
    min-height: auto;
  }
  .about-history__title {
    font-size: 28px;
  }
  .about-history__timeline {
    height: auto;
    min-height: auto;
    margin-left: 20px;
    margin-right: 20px;
    display: flex;
    flex-direction: column;
    gap: 40px;
    padding: 20px 0;
  }
  .about-history__line {
    left: 0;
    top: 0;
    bottom: 0;
    transform: translateX(-50%);
  }
  .about-history__item {
    position: relative !important;
    top: auto !important;
    left: auto !important;
    right: auto !important;
    margin-left: 40px;
    width: calc(100% - 40px) !important;
  }
  .about-history__item--left,
  .about-history__item--right {
    text-align: left;
  }
  .about-history__item--left .about-history__dot,
  .about-history__item--right .about-history__dot {
    left: -40px;
    right: auto;
    top: 18px;
    transform: translate(-50%, -50%);
    z-index: 10;
  }
  .about-history__year {
    font-size: 36px;
  }
  .about-history__card {
    width: 100%;
    padding: 24px;
    box-sizing: border-box;
  }

  /* Contact 区块 */
  .about-contact__card {
    padding: 0;
    height: auto;
    min-height: 480px;
  }
  .about-contact__card-content {
    padding: 40px 30px;
    height: auto;
    min-height: 480px;
  }
  .about-contact__card-box {
    width: 100%;
    height: auto;
    padding: 40px 30px;
    box-sizing: border-box;
  }
  .about-contact__heading {
    font-size: 28px;
    line-height: normal;
  }
  .about-contact__email {
    width: 100%;
    height: auto;
    min-height: 48px;
  }
  .about-contact__email span {
    font-size: 14px;
    padding: 0 10px;
    white-space: normal;
    word-break: break-all;
    line-height: normal;
  }
  .about-contact__scene {
    height: 250px;
  }

  /* 其他 */
  .about-pvv {
    padding: 60px 0;
  }
}