.vision-main {
  background: linear-gradient(180deg, #f6f9ff 0%, #ffffff 28%, #f8fbff 100%);
  padding-bottom: 0;
}

.vision-hero {
  position: relative;
  min-height: 520px;
  background: #0f2f66 url("../images/yj/qyyj-bg.png") center center / cover no-repeat;
  overflow: hidden;
}

.vision-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(95deg, rgba(8, 33, 76, 0.85) 0%, rgba(20, 73, 139, 0.78) 45%, rgba(22, 95, 180, 0.56) 100%);
}

.vision-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 75% 20%, rgba(255, 255, 255, 0.18), transparent 52%);
}

.vision-hero .l-wrap {
  min-height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 2;
}

.vision-hero h1 {
  margin: 0;
  color: #fff;
  font-size: 56px;
  line-height: 1.2;
  letter-spacing: 2px;
}

.vision-hero p {
  margin: 16px auto 0;
  color: rgba(255, 255, 255, 0.92);
  font-size: 22px;
  max-width: 700px;
  text-align: center;
}

.vision-section {
  margin-top: 34px;
}

.vision-card {
  background: linear-gradient(165deg, #e4ebf7 0%, #d9e4f4 52%, #d2ddf0 100%);
  border-radius: 18px;
  box-shadow: 0 12px 32px rgba(16, 48, 96, 0.12);
  border: 1px solid #b8cce8;
  padding: 40px;
}

.section-title {
  margin: 0 0 12px;
  font-size: 32px;
  color: #153869;
  line-height: 1.3;
  letter-spacing: 1px;
}

.vision-card .section-title {
  color: #0f305e;
}

.section-subtitle {
  margin: 0 0 24px;
  font-size: 16px;
  color: #5a6f8f;
  line-height: 1.8;
}

.vision-card .section-subtitle {
  color: #4a6284;
}

.timeline-switch {
  margin-top: 24px;
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 22px;
}

.timeline-nav {
  margin: 0;
  list-style: none;
  padding: 0;
  border: 1px solid #b0c6e4;
  border-radius: 14px;
  background: linear-gradient(180deg, #dde8f5 0%, #d4e0f1 100%);
}

.timeline-trigger {
  width: 100%;
  border: none;
  border-bottom: 1px solid #b9cce6;
  background: transparent;
  text-align: left;
  padding: 18px 16px 18px 20px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.timeline-nav li:last-child .timeline-trigger {
  border-bottom: none;
}

.timeline-trigger:hover,
.timeline-nav li.is-active .timeline-trigger {
  background: #c9daf0;
}

.timeline-year {
  display: block;
  font-size: 24px;
  font-weight: 700;
  color: #143a72;
  line-height: 1.2;
  margin-bottom: 6px;
}

.timeline-brief {
  display: block;
  font-size: 14px;
  color: #4a6588;
  line-height: 1.65;
}

.timeline-panel {
  border-radius: 14px;
  border: 1px solid #b0c6e4;
  background: linear-gradient(180deg, #edf2fa 0%, #dfe9f6 100%);
  padding: 28px 28px 24px;
  min-height: 316px;
  max-height: min(88vh, 920px);
  position: relative;
  overflow-x: hidden;
  overflow-y: auto;
  display: grid;
  align-content: start;
}

.timeline-panel::before {
  content: "";
  position: absolute;
  right: -100px;
  top: -90px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(72, 128, 214, 0.32), transparent 72%);
  pointer-events: none;
}

.timeline-detail {
  grid-area: 1 / 1;
  min-width: 0;
  position: relative;
  z-index: 0;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(10px);
  transition:
    opacity 0.34s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.34s cubic-bezier(0.4, 0, 0.2, 1),
    visibility 0s linear 0.34s;
}

.timeline-detail.is-active {
  z-index: 1;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
  transition:
    opacity 0.38s cubic-bezier(0.25, 0.46, 0.45, 0.94),
    transform 0.38s cubic-bezier(0.25, 0.46, 0.45, 0.94),
    visibility 0s linear 0s;
}

/* 退场：仅当前块淡出，下一块仍为隐藏，避免两段文案同时半透明叠字 */
.timeline-detail.is-active.is-leaving {
  z-index: 2;
  opacity: 0;
  visibility: visible;
  pointer-events: none;
  transform: translateY(-8px);
  transition:
    opacity 0.28s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (prefers-reduced-motion: reduce) {
  .timeline-detail,
  .timeline-detail.is-active,
  .timeline-detail.is-active.is-leaving {
    transform: none;
    transition-duration: 0.01ms;
    transition-delay: 0s !important;
  }
}

.timeline-detail h3 {
  margin: 0 0 12px;
  color: #18427b;
  font-size: 28px;
}

.timeline-point {
  display: flex;
  align-items: flex-start;
  margin-bottom: 14px;
}

.timeline-point:last-child {
  margin-bottom: 0;
}

.timeline-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-top: 10px;
  margin-right: 10px;
  background: #2f7be0;
  flex: 0 0 auto;
}

.timeline-point p {
  margin: 0;
  color: #35527a;
  line-height: 1.9;
  font-size: 15px;
}

.timeline-point--stack {
  align-items: flex-start;
}

.timeline-cert {
  flex: 1;
  min-width: 0;
}

.timeline-cert p {
  margin: 0 0 8px;
  color: #35527a;
  line-height: 1.85;
  font-size: 15px;
}

.timeline-cert p:last-child {
  margin-bottom: 0;
}

.timeline-cert-title {
  font-weight: 700;
  color: #18427b;
  font-size: 16px;
  margin-bottom: 10px !important;
}

.timeline-divider {
  margin: 22px 0 18px;
  padding-top: 18px;
  border-top: 1px dashed #a8bfdc;
  text-align: center;
}

.timeline-divider span {
  font-size: 14px;
  font-weight: 600;
  color: #2f7be0;
  letter-spacing: 2px;
}

.timeline-industry {
  margin-top: 14px;
}

.timeline-industry-label {
  font-weight: 600;
  color: #18427b;
  margin-bottom: 10px !important;
}

.timeline-industry-fig {
  margin: 0;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid #b0c6e4;
  background: #f4f7fc;
  max-width:250px;
}

.timeline-industry-fig img {
  display: block;
  width: 100%;
  height: auto;
  vertical-align: middle;
}

.core-grid {
  margin-top: 8px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.core-item {
  border: 1px solid #d9e6fb;
  border-radius: 12px;
  background: linear-gradient(180deg, #f7fbff 0%, #ffffff 100%);
  padding: 20px 18px;
  min-height: 190px;
}

.core-head {
  display: flex;
  align-items: center;
  margin-bottom: 10px;
}

.core-icon {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  border: 1px solid #d3e3fb;
  background: #edf4ff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-right: 8px;
}

.core-icon svg {
  width: 18px;
  height: 18px;
  fill: #2e72cf;
}

.core-item h3 {
  margin: 0;
  color: #18427b;
  font-size: 23px;
}

.core-item p {
  margin: 0;
  color: #4b6184;
  line-height: 1.9;
  font-size: 15px;
}

.closing {
  margin-top: 24px;
  padding: 18px 20px;
  border-left: 4px solid #2f7be0;
  background: #f3f8ff;
  color: #28486f;
  line-height: 1.9;
  font-size: 16px;
}

.story-section {
  background: #0d3d84 url("../images/yj/banner-1.png") center center / cover no-repeat;
  border-radius: 0;
  border: none;
  padding: 36px;
  color: #fff;
  position: relative;
  overflow: hidden;
  min-height: 88vh;
  width: 100%;
}

.story-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(7, 35, 80, 0.72) 0%, rgba(8, 56, 121, 0.56) 46%, rgba(8, 56, 121, 0.3) 100%);
  pointer-events: none;
}

.story-section .section-title {
  color: #fff;
  margin-bottom: 6px;
}

.story-section .section-subtitle {
  color: rgba(230, 242, 255, 0.88);
  margin-bottom: 18px;
  font-size: 15px;
}

.story-stage {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 26px;
  position: relative;
  z-index: 1;
  min-height: calc(88vh - 130px);
  align-items: center;
}

.story-nav {
  list-style: none;
  margin: 0;
  padding: 0;
  border: none;
  background: transparent;
  border-radius: 14px;
}

.story-btn {
  width: 100%;
  text-align: left;
  padding: 14px 8px;
  border: none;
  border-bottom: 1px solid rgba(222, 236, 255, 0.22);
  background: transparent;
  color: rgba(233, 244, 255, 0.9);
  cursor: pointer;
  transition: all 0.2s ease;
}

.story-nav li:last-child .story-btn {
  border-bottom: none;
}

.story-nav li.is-active .story-btn,
.story-btn:hover {
  background: transparent;
  color: #fff;
}

.story-btn strong {
  display: block;
  font-size: 22px;
  margin-bottom: 3px;
  font-weight: 600;
}

.story-btn span {
  display: block;
  font-size: 14px;
  line-height: 1.5;
  color: inherit;
}

.story-panel {
  border: none;
  border-radius: 0;
  min-height: 420px;
  position: relative;
  overflow: hidden;
  background: transparent;
  backdrop-filter: none;
  display: grid;
  align-content: start;
}

.story-detail {
  grid-area: 1 / 1;
  min-width: 0;
  min-height: 420px;
  display: flex;
  align-items: flex-end;
  border-radius: 0;
  padding: 10px 4px 24px;
  overflow: auto;
  position: relative;
  z-index: 0;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(14px);
  transition:
    opacity 0.34s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.34s cubic-bezier(0.4, 0, 0.2, 1),
    visibility 0s linear 0.34s;
}

.story-detail.is-active {
  z-index: 1;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
  transition:
    opacity 0.38s cubic-bezier(0.25, 0.46, 0.45, 0.94),
    transform 0.38s cubic-bezier(0.25, 0.46, 0.45, 0.94),
    visibility 0s linear 0s;
}

.story-detail.is-active.is-leaving {
  z-index: 2;
  opacity: 0;
  visibility: visible;
  pointer-events: none;
  transform: translateY(-8px);
  transition:
    opacity 0.28s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (prefers-reduced-motion: reduce) {
  .story-detail,
  .story-detail.is-active,
  .story-detail.is-active.is-leaving {
    transform: none;
    transition-duration: 0.01ms;
    transition-delay: 0s !important;
  }
}

.story-content {
  position: relative;
  z-index: 2;
  max-width: 620px;
}

.story-detail h4 {
  margin: 0 0 12px;
  font-size: 44px;
  color: #ffffff;
  letter-spacing: 1px;
  text-shadow: 0 3px 14px rgba(0, 0, 0, 0.35);
}

.story-detail p {
  margin: 0;
  color: rgba(231, 243, 255, 0.95);
  font-size: 18px;
  line-height: 1.85;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.32);
}

.story-tags {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.story-tags span {
  border-radius: 999px;
  border: none;
  padding: 0;
  font-size: 14px;
  color: rgba(232, 244, 255, 0.94);
  background: transparent;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.28);
}

.story-tags span::after {
  content: " /";
  margin-left: 4px;
  opacity: 0.6;
}

.story-tags span:last-child::after {
  display: none;
}

.win4-section {
  margin-top: 0;
  margin-bottom: 0;
  width: 100%;
  min-height: 100vh;
  position: relative;
  background: #33425c url("../images/yj/hz.png") center center / cover no-repeat;
  overflow: hidden;
}

.win4-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(22, 31, 47, 0.36) 0%, rgba(22, 31, 47, 0.66) 100%);
}

.win4-inner {
  position: relative;
  z-index: 2;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 64px 34px;
}

.win4-grid {
  width: 100%;
  max-width: 1280px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.win4-item {
  min-height: 175px;
  border-radius: 10px;
  border: 1px solid rgba(236, 243, 255, 0.34);
  background: rgba(9, 18, 33, 0.38);
  backdrop-filter: blur(1px);
  padding: 24px 24px 22px;
  color: #fff;
}

.win4-item h3 {
  margin: 0;
  font-size: 34px;
  line-height: 1.2;
  letter-spacing: 1px;
}

.win4-item p {
  margin: 12px 0 0;
  font-size: 20px;
  line-height: 1.75;
  color: rgba(240, 246, 255, 0.96);
}

@media (max-width: 992px) {
  .vision-hero {
    min-height: 340px;
  }

  .vision-hero h1 {
    font-size: 42px;
  }

  .vision-card,
  .story-section {
    padding: 30px 22px;
  }

  .timeline-switch,
  .story-stage {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .core-grid {
    grid-template-columns: 1fr;
  }

  .win4-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .vision-hero {
    min-height: 290px;
  }

  .vision-hero h1 {
    font-size: 34px;
  }

  .vision-hero p {
    font-size: 18px;
  }

  .section-title {
    font-size: 25px;
  }

  .timeline-panel {
    padding: 22px 20px;
    min-height: auto;
  }

  .timeline-detail h3 {
    font-size: 24px;
  }

  .story-detail h4 {
    font-size: 28px;
  }

  .story-panel,
  .story-detail {
    min-height: 320px;
    height: 320px;
  }

  .story-detail {
    padding: 22px 4px;
  }

  .win4-inner {
    padding: 42px 16px;
  }

  .win4-item {
    min-height: 150px;
    padding: 20px 16px 18px;
  }

  .win4-item h3 {
    font-size: 28px;
  }

  .win4-item p {
    font-size: 16px;
    margin-top: 10px;
  }
}