/* 关于我们内页样式（按视觉稿 1:1 还原） */

/* 头图区域：高度 1080，标题居中 */
.hero-inner {
  position: relative;
  min-height: 1080px;
  height: 1080px;
}

.hero-inner__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}

.hero-inner .hero__content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1; /* 确保移动端菜单在其上方 */
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.hero-inner__title {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: 0.12em;
  margin: 0 0 8px;
}

.hero-inner__subtitle {
  font-size: 18px;
  letter-spacing: 0.25em;
  margin: 0;
}

/* 为关于我们头图增加蒙版，提升文字对比度 */
.hero.hero-inner .hero__overlay {
  background: linear-gradient(
    180deg,
    rgba(0, 10, 30, 0.9) 0%,
    rgba(0, 10, 30, 0.95) 40%,
    rgba(0, 10, 30, 0.98) 100%
  );
}

/* 顶部 ABOUT 模块 */
.about-intro {
  background: #fff;
  padding: 80px 0 60px;
}

.about-intro__inner {
  max-width: 1600px;
}

.about-intro__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 120px;
}

.about-intro__left {
  flex: 0 0 520px;
}

.about-intro__lead {
  margin: 0;
  font-size: 32px;
  font-weight: 700;
  color: var(--color-dark);
  line-height: 1.5;
}

.about-intro__brand {
  margin-top: 40px;
  font-weight: 700;
  color: var(--color-primary);
  font-family: var(--font-primary);
}

.about-intro__name {
  display: block;
  font-size: 32px;
  line-height: 1.2;
}

.about-intro__since {
  display: block;
  font-size: 32px;
  line-height: 1.2;
}

.about-intro__year {
  display: block;
  font-size: 72px;
  line-height: 1.1;
}

.about-intro__right {
  flex: 1;
  min-width: 0;
}

.about-intro__text {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.8;
  color: #333;
}

.about-intro__text:last-child {
  margin-bottom: 0;
}

.about-intro__images {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.about-intro__img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

@media (hover: hover) {
  .about-intro__img {
    transition: transform 0.4s ease, box-shadow 0.4s ease;
  }
  .about-intro__img:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 14px 30px rgba(0, 0, 0, 0.18);
  }
}

/* 资质荣誉模块 */
.about-certs {
  padding: 40px 0 70px;
}

.about-certs .section__title {
  font-size: 28px;
}

.about-certs__carousel {
  margin-top: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  position: relative;
}

.about-certs__viewport {
  width: 1112px; /* 4 * 260 + 3 * 24 */
  max-width: 100%;
  overflow: hidden;
  position: relative;
}

.about-certs__track {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  gap: 24px;
  transition: transform 0.35s ease;
}

.about-certs__item {
  flex: 0 0 260px;
  width: 260px;
  height: 360px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  position: relative;
}

.about-certs__item::before {
  content: "";
  position: absolute;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%);
  width: 260px;
  height: 64px;
  background: url('../images/about-cert-label.png') no-repeat center;
  background-size: contain;
}

.about-certs__item::after {
  content: "";
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  width: 225px;
  height: 73%;
  background: url('../images/about-cert-frame.png') no-repeat center;
  background-size: contain;
  z-index: 0;
}

.about-certs__item img {
  position: relative;
  z-index: 1;
  width: 70%;
  max-width: 155px;
  height: auto;
  max-height: 210px;
  margin-top: 36px;
  object-fit: contain;
}

@media (hover: hover) {
  .about-certs__item {
    transition: transform 0.3s ease;
  }
  .about-certs__item:hover {
    transform: translateY(-6px);
  }
}

.about-certs__caption {
  margin: 70px 0 0;
  font-size: 14px;
  color: var(--color-gray);
  text-align: center;
}

.about-certs__arrow {
  flex-shrink: 0;
  width: 40px;
  min-width: 40px;
  height: 40px;
  min-height: 40px;
  border-radius: 50%;
  border: 1px solid #d0d4dc;
  background: #fff;
  position: relative;
  box-sizing: border-box;
}

.about-certs__arrow::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 10px;
  height: 10px;
  border-top: 2px solid #555;
  border-right: 2px solid #555;
  transform: translate(-50%, -50%) rotate(-135deg); /* 箭头朝左 */
}

.about-certs__arrow--next::before {
  transform: translate(-50%, -50%) rotate(45deg); /* 箭头朝右 */
}

/* 蓝色统计区域 - 高度 880，数字块垂直居中 */
.about-stats {
  position: relative;
  height: 880px;
  min-height: 880px;
  padding: 0;
  color: #fff;
}

.about-stats__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}

.about-stats__inner {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1600px;
  height: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-stats__grid {
  display: flex;
  gap: 96px;
}

.about-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

/* 与首页一致：72px 蓝底圆 + 44px 图标 */
.about-stat__icon {
  width: 72px;
  height: 72px;
  margin-bottom: 16px;
  background-image: url('../../img/icobg.png');
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-stat__icon img {
  width: 44px;
  height: 44px;
  object-fit: contain;
}

/* 与首页一致：深蓝数字 #001329，64px；+、万 32px */
.about-stat__num {
  font-size: 64px; /* 与首页保持一致 */
  font-weight: 700;
  color: #001329;
  line-height: 64px;
}

.about-stat__num .about-stat__plus,
.about-stat__num .about-stat__unit {
  font-size: 0.5em;
  font-style: normal;
  vertical-align: top;
}

/* 与首页一致：18px、灰色文案 */
.about-stat__label {
  margin-top: 8px;
  font-size: 18px; /* 与首页保持一致 */
  color: var(--color-gray);
  text-align: center;
  word-break: keep-all;
}

/* 联系我们 + 地址 + 二维码（与上方统计区无间隙） */
.about-contact {
  padding: 0 0 70px;
  overflow-x: hidden;
}

/* 顶部蓝色条：全屏宽、高度 180px，文字垂直居中 */
.about-contact__row:first-of-type {
  width: 100vw;
  margin-left: calc(-50vw + 50%);
  margin-right: calc(-50vw + 50%);
  box-sizing: border-box;
  background: #0051a8;
  color: #fff;
  height: 180px;
  min-height: 180px;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 80px;
}

.about-contact__item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
}

.about-contact__row:first-of-type .about-contact__icon {
  width: 26px;
  height: 26px;
  object-fit: contain;
}

/* 地址块 */
.about-contact__row--addr {
  margin: 40px auto 0;
  max-width: 1000px;
  display: flex;
  justify-content: space-between;
  gap: 80px;
  align-items: center;
}

.about-contact__icon--addr {
  width: 120px;
  height: 120px;
  border-radius: 999px;
  object-fit: cover;
}

@media (hover: hover) {
  .about-contact__icon--addr {
    transition: transform 0.35s ease, box-shadow 0.35s ease;
  }
  .about-contact__icon--addr:hover {
    transform: translateY(-4px) scale(1.03);
    box-shadow: 0 14px 30px rgba(0, 0, 0, 0.2);
  }
}

.about-contact__addr {
  flex: 1;
  min-width: 0;
}

.about-contact__addr-title {
  margin: 0 0 6px;
  font-size: 20px;
  font-weight: 700;
  color: var(--color-dark);
}

.about-contact__addr p {
  margin: 0;
  font-size: 16px;
  color: var(--color-gray);
}

.about-contact__qrcode {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid #e5e7eb;
  text-align: center;
}

.about-contact__qrcode img {
  width: 150px;
  height: 150px;
  object-fit: contain;
  display: block;
  margin: 0 auto;
}

@media (hover: hover) {
  .about-contact__qrcode img {
    transition: transform 0.3s ease;
  }
  .about-contact__qrcode img:hover {
    transform: scale(1.05);
  }
}

.about-contact__qrcode span {
  display: block;
  margin-top: 12px;
  font-size: 18px;
  color: var(--color-gray);
}

/* ========== 响应式调整 ========== */
@media (max-width: 1200px) {
  .hero-inner {
    min-height: 720px;
    height: 720px;
  }
  .about-intro__top {
    gap: 48px;
  }

  .about-intro__left {
    flex-basis: 360px;
  }

  .about-intro__lead {
    font-size: 28px;
  }

  .about-intro__year {
    font-size: 60px;
  }

  .about-stats__numbers,
  .about-stats__labels,
  .about-stats__icons {
    gap: 56px;
  }
}

@media (max-width: 768px) {
  .hero-inner {
    min-height: 480px;
    height: 480px;
  }

  .hero-inner__title {
    font-size: 28px;
  }

  .hero-inner__subtitle {
    font-size: 14px;
  }

  .about-intro {
    padding: 40px 0 32px;
  }

  .about-intro__top {
    flex-direction: column;
    gap: 32px;
  }

  .about-intro__left {
    flex-basis: auto;
  }

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

  .about-intro__name,
  .about-intro__since {
    font-size: 24px;
  }

  .about-intro__year {
    font-size: 40px;
  }

  .about-intro__text {
    font-size: 13px;
  }

  .about-intro__images {
    grid-template-columns: 1fr;
  }

  .about-intro__img {
    height: 220px;
  }

  /* 资质荣誉 - 手机端适配：一屏展示 1 张，居中不裁切 */
  .about-certs {
    padding: 32px 0 48px;
  }

  .about-certs__carousel {
    flex-direction: column;
    gap: 0;
  }

  .about-certs__viewport {
    width: 100%;
    max-width: 320px;
    margin: 0 auto;
  }

  .about-certs__track {
    gap: 16px;
  }

  .about-certs__item {
    flex: 0 0 100%;
    width: 100%;
    max-width: 320px;
    height: 340px;
  }

  .about-certs__item::after {
    width: 100%;
    max-width: 260px;
    height: 240px;
  }

  .about-certs__item img {
    max-width: 150px;
    max-height: 200px;
    margin-top: 29px;
  }

  .about-certs__caption {
    margin-top: 67px;
  }

  /* 移动端左右按钮悬浮在证书两侧居中 */
  .about-certs__arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 2;
  }

  .about-certs__arrow--prev {
    left: 8px;
  }

  .about-certs__arrow--next {
    right: 8px;
  }

  /* 手机端保持箭头为正圆，防止被挤压变形 */
  .about-certs__arrow {
    width: 40px !important;
    min-width: 40px !important;
    height: 40px !important;
    min-height: 40px !important;
  }

  /* 数字区：两行两列、居中，与首页移动端一致 */
  .about-stats {
    height: auto;
    min-height: auto;
    padding: 80px 16px 88px;
  }

  .about-stats__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    justify-items: center;
    gap: 24px 16px;
    max-width: 360px;
    margin: 0 auto;
  }

  .about-stat {
    flex: none;
    max-width: 160px;
  }

  .about-stat__num {
    font-size: 48px;
    line-height: 48px;
  }

  .about-stats__numbers {
    flex-direction: column;
    gap: 12px;
    font-size: 32px;
  }

  .about-stats__labels {
    flex-direction: column;
    gap: 8px;
  }

  .about-stats__icons {
    flex-wrap: wrap;
    gap: 24px;
  }

  .about-contact__row:first-of-type {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    border-radius: 0; /* 手机端去掉圆角 */
  }

  .about-contact__row--addr {
    flex-direction: column;
    gap: 24px;
  }

  /* 手机端两个地区图片放大一倍 */
  .about-contact__icon--addr {
    width: 120px;
    height: 120px;
  }
}

@media (max-width: 480px) {
  .about-intro__img {
    height: 200px;
  }

  .about-contact__qrcode img {
    width: 120px;
    height: 120px;
  }
}