/* ==============================================
   关于我们 页面专属样式
   about.css — 依赖 style.css 的基础变量与组件
   ============================================== */

/* ---- Page Base ---- */
.about-page {
  background: #fff;
}

.about-main {
  padding-top: var(--nav-height); /* 留出固定导航高度 */
}

/* ==============================================
   Hero Section
   ============================================== */
.about-hero {
  position: relative;
  height: 648px;
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  overflow: hidden;
  background: #001a4d;
}

.about-hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
  display: block;
}

/* Scroll hint arrow at bottom center */
.about-hero__scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  opacity: 0.7;
  animation: bounceY 2s ease-in-out infinite;
}

.about-hero__scroll-hint img {
  width: 13px;
  height: 8px;
  object-fit: contain;
}

@keyframes bounceY {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

.about-hero .container {
  position: relative;
  z-index: 2;
}

.about-hero__content {
  display: flex;
  flex-wrap: wrap;
  gap: 23px;
  max-width: 672px;
}

/* Badge: APERTURE GATE */
.about-hero__badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(0, 60, 144, 0.2);
  border-radius: 9999px;
  padding: 7px 17px;
  font-size: 10px;
  font-weight: 700;
  color: #003c90;
  letter-spacing: 4px;
  text-transform: uppercase;
  line-height: 1;
}

.about-hero__title {
  flex: 1 1 100%;
  font-size: 48px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.96px;
  line-height: 1.2;
}

.about-hero__subtitle {
  flex: 1 1 100%;
  font-size: 30px;
  font-weight: 700;
  color: #0f52ba;
  letter-spacing: -0.3px;
  line-height: 1.625;
}

/* ==============================================
   Section Base (About page variant)
   ============================================== */
.about-section {
  padding: 160px 24px;
}

.about-section--white {
  background: #fff;
}

.about-section--gray {
  background: #f7f9fb;
}

/* ==============================================
   企业介绍 Section
   ============================================== */
.about-intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
  min-height: 408px;
}

/* Left column */
.about-intro__left {
  display: flex;
  flex-direction: column;
  gap: 80px;
}

.about-intro__header {
  display: flex;
  flex-direction: column;
  gap: 7.5px;
}

/* Override section__title alignment for this left-aligned context */
.about-intro__header .section__title,
.about-intro__header .section__subtitle-en {
  text-align: left;
}

.about-intro__body {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.about-intro__para {
  font-size: 16px;
  font-weight: 400;
  color: #434653;
  line-height: 1.5;
}

/* Right column: image with overlay bg */
.about-intro__right {
  position: relative;
}

.about-intro__img-wrapper {
  position: relative;
}

/* Subtle blue overlay background behind the frame */
.about-intro__img-overlay {
  position: absolute;
  inset: -16px;
  background: rgba(0, 60, 144, 0.05);
  border-radius: 12px;
  z-index: 0;
}

.about-intro__img-frame {
  position: relative;
  z-index: 1;
  height: 400px;
  border: 1px solid #c3c6d5;
  border-radius: 12px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  overflow: hidden;
}

.about-intro__img-frame img {
  width: 100%;
  height: 140%;
  object-fit: cover;
  object-position: center 20%;
  display: block;
}

/* ==============================================
   核心理念 Section
   ============================================== */
.about-values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.about-value-card {
  background: #fff;
  border: 1px solid #c3c6d5;
  border-radius: 12px;
  padding: 49px;
  min-height: 280px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.about-value-card:hover {
  box-shadow: 0 10px 30px rgba(0, 60, 144, 0.1);
  transform: translateY(-3px);
}

.about-value-card__icon {
  width: 29px;
  height: 28px;
  flex-shrink: 0;
}

.about-value-card__icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.about-value-card__title {
  font-size: 20px;
  font-weight: 500;
  color: #191c1e;
  line-height: 1.5;
  padding-top: 8px;
}

.about-value-card__desc {
  font-size: 16px;
  font-weight: 400;
  color: #434653;
  line-height: 1.5;
}

/* ==============================================
   联系方式 Section
   ============================================== */
.about-contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

/* Left column */
.about-contact__left {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

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

.about-contact__item {
  display: flex;
  align-items: flex-start;
  gap: 24px;
}

.about-contact__icon {
  width: 48px;
  height: 48px;
  background: rgba(0, 60, 144, 0.05);
  border-radius: 9999px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.about-contact__icon img {
  width: 16px;
  height: 16px;
  object-fit: contain;
}

.about-contact__label {
  font-size: 16px;
  font-weight: 700;
  color: #191c1e;
  margin-bottom: 4px;
  line-height: 1.5;
}

.about-contact__value {
  font-size: 16px;
  font-weight: 400;
  color: #434653;
  line-height: 1.5;
}

/* Mini Map */
.about-contact__map {
  height: 192px;
  border: 1px solid #c3c6d5;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.about-contact__map img {
  width: 100%;
  height: 281%;
  object-fit: cover;
  object-position: center 36%;
  display: block;
}

/* Right column: Message Form */
.about-contact__right {
  align-self: flex-start;
}

.about-form {
  background: #f2f4f6;
  border: 1px solid #c3c6d5;
  border-radius: 12px;
  padding: 49px;
  padding-bottom: 65px;
}

.about-form__title {
  font-size: 20px;
  font-weight: 500;
  color: #191c1e;
  line-height: 1.5;
  margin-bottom: 32px;
}

.about-form__form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

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

.about-form__label {
  font-size: 14px;
  font-weight: 700;
  color: #434653;
  line-height: 1.486;
}

.about-form__input,
.about-form__textarea {
  background: #fff;
  border: 1px solid #c3c6d5;
  border-radius: 12px;
  padding: 13px 17px;
  font-family: inherit;
  font-size: 16px;
  font-weight: 400;
  color: #111827;
  outline: none;
  width: 100%;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  resize: none;
}

.about-form__input::placeholder,
.about-form__textarea::placeholder {
  color: #6b7280;
}

.about-form__input:focus,
.about-form__textarea:focus {
  border-color: #0f52ba;
  box-shadow: 0 0 0 3px rgba(15, 82, 186, 0.12);
}

.about-form__textarea {
  min-height: 120px;
  line-height: 1.5;
}

.about-form__submit {
  width: 100%;
  background: #003c90;
  color: #fff;
  font-family: inherit;
  font-size: 16px;
  font-weight: 700;
  padding: 16px;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  text-align: center;
  line-height: 1.5;
  transition: background 0.2s ease, transform 0.2s ease;
}

.about-form__submit:hover {
  background: #0a40a0;
  transform: translateY(-1px);
}

.about-form__submit:active {
  transform: translateY(0);
}

/* ==============================================
   Responsive — Tablet (≤ 1024px)
   ============================================== */
@media (max-width: 1024px) {
  .about-section {
    padding: 100px 24px;
  }

  .about-hero {
    height: 520px;
  }

  .about-hero__title {
    font-size: 38px;
  }

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

  .about-intro-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .about-intro__left {
    gap: 40px;
  }

  .about-intro__img-frame {
    height: 320px;
  }

  .about-values-grid {
    gap: 20px;
  }

  .about-contact-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}

/* ==============================================
   Responsive — Mobile (≤ 768px)
   ============================================== */
@media (max-width: 768px) {
  .about-section {
    padding: 64px 24px;
  }

  .about-hero {
    height: auto;
    min-height: 400px;
    padding: 80px 0 60px;
    align-items: flex-end;
  }

  .about-hero__content {
    gap: 16px;
    padding-bottom: 40px;
  }

  .about-hero__title {
    font-size: 28px;
    letter-spacing: -0.5px;
  }

  .about-hero__subtitle {
    font-size: 18px;
  }

  .about-hero__badge {
    font-size: 9px;
    letter-spacing: 2px;
    padding: 6px 14px;
  }

  .about-intro-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .about-intro__left {
    gap: 32px;
  }

  .about-intro__header .section__title,
  .about-intro__header .section__subtitle-en {
    text-align: center;
  }

  .about-intro__img-frame {
    height: 240px;
  }

  .about-values-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .about-value-card {
    padding: 32px;
    min-height: auto;
  }

  .about-contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-form {
    padding: 32px;
  }

  .about-form__title {
    font-size: 18px;
  }
}

/* ==============================================
   Responsive — Small Mobile (≤ 480px)
   ============================================== */
@media (max-width: 480px) {
  .about-hero__title {
    font-size: 22px;
  }

  .about-hero__subtitle {
    font-size: 16px;
  }

  .about-form {
    padding: 24px;
  }
}