/* 公司概况 - company_overview.html (设计基准 1920px) */

:root {
  --co-primary: #14126f;
  --co-primary-alt: #5ec8e8;
  --co-text: #333333;
  --co-text-muted: #666666;
  --co-text-light: #999999;
  --co-line: #e5e5e5;
  --co-font-hero: clamp(32px, 3.125vw, 60px);
  --co-font-section: clamp(24px, 2.083vw, 40px);
  --co-font-sub: clamp(14px, 0.9375vw, 18px);
}

.site-main--co {
  min-height: auto;
  overflow: hidden;
}

.co-section-title {
  margin: 0;
  font-size: var(--co-font-section);
  font-weight: 600;
  line-height: 1.3;
  color: var(--co-text);
}

.co-section-sub {
  margin: clamp(10px, 0.833vw, 16px) 0 0;
  font-size: var(--co-font-sub);
  line-height: 1.7;
  color: var(--co-text-light);
}

/* ========== Hero ========== */

.co-hero {
  position: relative;
  min-height: clamp(320px, 33.854vw, 650px);
  display: flex;
  align-items: center;
  overflow: hidden;
  background: #0a1a4a;
}

.co-hero__bg {
  position: absolute;
  inset: 0;
}

.co-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: blur(2px);
  transform: scale(1.02);
}

.co-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(10, 26, 74, 0.55) 0%,
    rgba(10, 26, 74, 0.22) 50%,
    rgba(10, 26, 74, 0.08) 100%
  );
}

.co-hero__inner {
  position: relative;
  z-index: 1;
  padding: clamp(48px, 5.208vw, 100px) 0;
}

.co-hero__title {
  margin: 0;
  font-size: var(--co-font-hero);
  font-weight: 600;
  line-height: 1.2;
  color: #ffffff;
}

.co-hero__desc {
  margin: clamp(16px, 1.458vw, 28px) 0 0;
  max-width: 34em;
  font-size: clamp(14px, 0.9375vw, 18px);
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.92);
}

.co-hero__scroll {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: clamp(48px, 3.125vw, 60px);
  height: clamp(48px, 3.125vw, 60px);
  margin-top: clamp(28px, 2.5vw, 48px);
  color: var(--co-primary);
  background: #ffffff;
  border: none;
  border-radius: 50%;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  transition:
    transform 0.25s ease,
    box-shadow 0.25s ease;
}

.co-hero__scroll:hover {
  transform: translateY(3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.14);
}

.co-hero__scroll-icon {
  display: block;
  width: clamp(14px, 0.885vw, 17px);
  height: clamp(14px, 0.885vw, 17px);
}

/* ========== About ========== */

.co-about {
  position: relative;
  padding: clamp(56px, 5.208vw, 100px) 0 clamp(64px, 5.208vw, 100px);
  background-color: #ffffff;
  background-image: url("../image/about/company_overview/image%20389.png");
  background-repeat: no-repeat;
  background-position: center 42%;
  background-size: min(1920px, 120%) auto;
  overflow: hidden;
}

.co-about .container {
  position: relative;
  z-index: 1;
}

.co-about__layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: clamp(28px, 2.5vw, 48px) clamp(32px, 3.333vw, 64px);
  margin-top: clamp(36px, 3.125vw, 60px);
  align-items: start;
}

.co-about__left {
  display: flex;
  flex-direction: column;
  gap: clamp(28px, 2.5vw, 48px);
}

.co-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  column-gap: clamp(24px, 2.5vw, 48px);
  row-gap: 0;
}

.co-stats__item {
  padding: clamp(22px, 1.875vw, 36px) clamp(8px, 0.625vw, 12px);
  text-align: left;
  border-top: 1px solid var(--co-line);
  border-bottom: 1px solid var(--co-line);
}

.co-stats__value {
  margin: 0;
  display: flex;
  align-items: baseline;
  justify-content: flex-start;
  gap: 4px;
  line-height: 1;
}

.co-stats__value strong {
  font-size: clamp(32px, 2.917vw, 56px);
  font-weight: 700;
  color: var(--co-primary);
  letter-spacing: -0.02em;
}

.co-stats__unit {
  font-size: clamp(13px, 0.833vw, 16px);
  color: #a8a8c0;
  font-weight: 400;
}

.co-stats__label {
  margin: clamp(8px, 0.625vw, 12px) 0 0;
  font-size: clamp(13px, 0.833vw, 16px);
  color: var(--co-text-muted);
}

.co-about__media {
  position: relative;
  z-index: 1;
  overflow: hidden;
  background: #f0f0f0;
}

.co-about__media img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.co-about__brand {
  position: relative;
  z-index: 0;
  margin-top: clamp(-36px, -2.5vw, -20px);
  padding: clamp(36px, 3.125vw, 60px) 0 clamp(28px, 2.5vw, 48px);
  /* border-top: 1px solid var(--co-line);
  border-bottom: 1px solid var(--co-line); */
  text-align: right;
}

.co-about__watermark {
  position: relative;
  right: 0;
  z-index: 0;
  margin: clamp(-56px, -4.5vw, -32px) 0 0;
  padding: 0;
  font-family: "Arial Black", "Arial", "Helvetica Neue", sans-serif;
  font-weight: 900;
  font-size: clamp(36px, 6.5vw, 120px);
  line-height: 1;
  letter-spacing: -0.02em;
  white-space: nowrap;
  color: rgba(20, 18, 111, 0.2);
  opacity: 0.22;
  user-select: none;
  overflow: hidden;
  text-overflow: clip;
}

.co-about__headline {
  margin: 0;
  font-size: clamp(20px, 1.458vw, 28px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--co-text);
}

.co-about__copy {
  margin-top: clamp(20px, 1.667vw, 32px);
}

.co-about__copy p {
  margin: 0;
  font-size: clamp(13px, 0.833vw, 16px);
  line-height: 1.9;
  color: var(--co-text-muted);
  text-align: justify;
}

.co-about__copy p + p {
  margin-top: clamp(18px, 1.458vw, 28px);
}

/* ========== History / Timeline ========== */

.co-history {
  position: relative;
  padding: clamp(56px, 5.208vw, 100px) 0 clamp(48px, 4.167vw, 80px);
  background-color: #ffffff;
  background-image: url("../image/about/company_overview/Group%201321314682.png");
  background-repeat: no-repeat;
  background-position: center bottom;
  background-size: cover;
  overflow: hidden;
}

.co-history .container {
  position: relative;
  z-index: 1;
}

.co-timeline {
  position: relative;
  z-index: 1;
  margin-top: clamp(40px, 3.75vw, 72px);
}

.co-timeline__viewport {
  position: relative;
  overflow: hidden;
  padding: clamp(12px, 1.25vw, 24px) 0 clamp(8px, 0.833vw, 16px);
}

.co-timeline__track {
  display: flex;
  gap: clamp(24px, 2.5vw, 48px);
  width: max-content;
  will-change: transform;
  transition: transform 0.45s ease;
  padding: 0 clamp(20px, 8.333vw, 160px);
}

.co-timeline__line {
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 8px;
  transform: translateY(-50%);
  pointer-events: none;
  z-index: 0;
  background: repeating-linear-gradient(
    to right,
    #cfcfd8 0,
    #cfcfd8 1.5px,
    transparent 1.5px,
    transparent 5px
  );
  background-position: center;
  opacity: 0.85;
}

.co-timeline__item {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-rows: 1fr auto 1fr;
  width: clamp(200px, 14.583vw, 280px);
  flex-shrink: 0;
  min-height: clamp(440px, 38vw, 580px);
}

.co-timeline__half {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  text-align: left;
  min-height: 0;
}

.co-timeline__item--bottom .co-timeline__half {
  justify-content: flex-start;
}

.co-timeline__axis {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 0;
}

.co-timeline__marks {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  padding: 0 8px;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0%,
    #ffffff 10%,
    #ffffff 90%,
    rgba(255, 255, 255, 0) 100%
  );
}

.co-timeline__item--top .co-timeline__marks {
  color: var(--co-primary);
}

.co-timeline__item--bottom .co-timeline__marks {
  color: var(--co-primary-alt);
}

.co-timeline__mark {
  display: block;
  width: 1.5px;
  height: 7px;
  background: currentColor;
  flex-shrink: 0;
}

.co-timeline__mark--center {
  height: 11px;
}

.co-timeline__stem {
  position: absolute;
  left: 50%;
  width: 1.5px;
  height: 28px;
  transform: translateX(-50%);
  background: repeating-linear-gradient(
    to bottom,
    currentColor 0,
    currentColor 2px,
    transparent 2px,
    transparent 5px
  );
  pointer-events: none;
}

.co-timeline__item--top .co-timeline__stem {
  top: 2px;
  color: var(--co-primary);
}

.co-timeline__item--bottom .co-timeline__stem {
  bottom: 2px;
  color: var(--co-primary-alt);
}

.co-timeline__content {
  width: 100%;
  text-align: left;
}

.co-timeline__item--top .co-timeline__content {
  margin-bottom: clamp(20px, 1.667vw, 32px);
}

.co-timeline__item--bottom .co-timeline__content {
  margin-top: clamp(20px, 1.667vw, 32px);
}

.co-timeline__title {
  margin: 0;
  font-size: clamp(13px, 0.833vw, 16px);
  font-weight: 600;
  color: var(--co-text);
  line-height: 1.5;
  text-align: left;
}

.co-timeline__desc {
  margin: 6px 0 0;
  font-size: clamp(12px, 0.729vw, 14px);
  color: var(--co-text-light);
  line-height: 1.6;
  text-align: left;
}

.co-timeline__item--top .co-timeline__media {
  margin-top: clamp(12px, 1.042vw, 20px);
}

.co-timeline__item--bottom .co-timeline__media {
  margin-bottom: clamp(12px, 1.042vw, 20px);
}

.co-timeline__item--bottom .co-timeline__title {
  margin-top: clamp(12px, 1.042vw, 20px);
}

.co-timeline__media {
  overflow: hidden;
  padding: 0;
  border: none;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  aspect-ratio: 4 / 3;
}

.co-timeline__media img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center;
}

.co-timeline__year {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: calc(100% + 36px);
  display: block;
  font-size: clamp(22px, 1.667vw, 32px);
  font-weight: 700;
  color: var(--co-primary);
  line-height: 1;
  white-space: nowrap;
}

.co-timeline__year--alt {
  top: auto;
  bottom: calc(100% + 36px);
  color: var(--co-primary-alt);
}

/* ========== Carousel nav ========== */

.co-carousel-nav {
  display: flex;
  gap: 12px;
  margin-top: clamp(24px, 2.083vw, 40px);
}

.co-carousel-nav--end {
  justify-content: flex-end;
}

.co-carousel-nav--center {
  justify-content: center;
}

.co-carousel-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: clamp(40px, 2.708vw, 52px);
  height: clamp(40px, 2.708vw, 52px);
  border-radius: 50%;
  background: var(--co-primary);
  color: #ffffff;
  transition:
    background 0.2s ease,
    transform 0.2s ease,
    opacity 0.2s ease;
}

.co-carousel-btn:hover {
  background: #1c1a8a;
  transform: scale(1.04);
}

.co-carousel-btn:disabled {
  opacity: 0.35;
  cursor: default;
  transform: none;
}

.co-carousel-btn__icon {
  display: block;
  width: auto;
  height: clamp(8px, 0.521vw, 10px);
  filter: brightness(0) invert(1);
}

.co-carousel-btn__icon--prev {
  transform: scaleX(-1);
}

/* ========== IP ========== */

.co-ip {
  padding: clamp(56px, 5.208vw, 100px) 0;
  background: transparent;
}

.co-ip__grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: clamp(12px, 1.042vw, 20px);
  margin-top: clamp(36px, 3.125vw, 60px);
}

.co-ip__cell {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: clamp(72px, 5.208vw, 100px);
  padding: clamp(14px, 1.25vw, 24px) clamp(10px, 0.833vw, 16px);
  background: #ffffff;
  border: 1px solid #ececec;
}

.co-ip__cell img {
  max-width: 88%;
  max-height: clamp(28px, 2.083vw, 40px);
  width: auto;
  height: auto;
  object-fit: contain;
}

/* ========== Magazine ========== */

.co-magazine {
  padding: clamp(56px, 5.208vw, 100px) 0 clamp(72px, 6.25vw, 120px);
  background: linear-gradient(
    180deg,
    #fcfdff 0%,
    #f7faff 42%,
    #f0f3f8 100%
  );
}

.co-magazine__carousel {
  margin-top: clamp(36px, 3.125vw, 60px);
}

.co-magazine__viewport {
  overflow: hidden;
}

.co-magazine__track {
  display: flex;
  gap: clamp(20px, 2.083vw, 40px);
  width: max-content;
  will-change: transform;
  transition: transform 0.45s ease;
}

.co-magazine__item {
  flex-shrink: 0;
  width: calc((min(1600px, 83.3333vw) - 3 * clamp(20px, 2.083vw, 40px)) / 4);
  max-width: 360px;
  text-align: center;
}

.co-magazine__cover {
  padding: 0;
  border: none;
  background: transparent;
  box-shadow: none;
  overflow: hidden;
  line-height: 0;
}

.co-magazine__cover img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.co-magazine__caption {
  margin: clamp(16px, 1.25vw, 24px) 0 0;
  font-size: clamp(14px, 0.9375vw, 18px);
  color: var(--co-text);
}

/* ========== Responsive ========== */

@media (max-width: 1200px) {
  .co-about__layout {
    grid-template-columns: 1fr;
  }

  .co-about__right {
    order: -1;
  }

  .co-ip__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .co-hero__overlay {
    background: rgba(10, 26, 74, 0.5);
  }

  .co-hero__bg img {
    filter: blur(1px);
  }

  .co-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(16px, 4vw, 28px);
  }

  .co-ip__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .co-timeline__track {
    padding: 0 16px;
  }

  .co-carousel-nav--end {
    justify-content: center;
  }

  .co-about__brand {
    margin-top: clamp(-24px, -4vw, -12px);
    padding-top: clamp(28px, 5vw, 40px);
    padding-bottom: clamp(20px, 4vw, 32px);
  }

  .co-about__watermark {
    margin-top: clamp(-36px, -6vw, -20px);
    font-size: clamp(28px, 10vw, 56px);
    opacity: 0.2;
  }

  .co-magazine__item {
    width: clamp(180px, 70vw, 280px);
    max-width: none;
  }
}

@media (max-width: 480px) {
  .co-ip__grid {
    grid-template-columns: 1fr;
  }
}