/* ==========================================================================
   私车公用页面全局样式
   ========================================================================== */
:root {
  --primary-color: #0E3B97;
  --primary-deep: #092D76;
  --primary-light: #8CA3EA;
  --tech-gradient: linear-gradient(135deg, #0E3B97 0%, #8CA3EA 100%);
  --text-color: #222;
  --sub-text-color: #555;
  --soft-bg: #F3F5F7;
  --card-shadow: 0 12px 30px rgba(14, 59, 151, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--text-color);
  background: #fff;
  font-family: PingFangSC-Regular, "Microsoft YaHei", Avenir, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
}

button,
a {
  font-family: inherit;
}

button,
a,
.highlight-card {
  -webkit-tap-highlight-color: transparent;
}

.main-banner {
  width: 100%;
  overflow: hidden;
  background: #0E3B97;
}

.main-banner img {
  display: block;
  width: 100%;
  height: auto;
}

.page-container,
.customers-container {
  position: relative;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 30px;
}

.page-section {
  position: relative;
  overflow: hidden;
  padding: 64px 0;
}

.section-title {
  position: relative;
  z-index: 1;
  margin: 0 0 46px;
  text-align: center;
}

.section-title h2 {
  margin: 0 0 12px;
  color: #222;
  font-size: 24px;
  font-weight: 400;
  letter-spacing: 2px;
  line-height: 1.4;
}

.section-title p {
  margin: 0;
  color: #555;
  font-size: 20px;
  font-weight: lighter;
  letter-spacing: 1px;
  line-height: 1.5;
}

.consult-wrap {
  position: relative;
  z-index: 2;
  margin-top: 42px;
  text-align: center;
}

.btn-consult {
  position: relative;
  display: inline-flex;
  min-width: 126px;
  min-height: 42px;
  padding: 9px 26px;
  overflow: hidden;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--primary-color);
  border-radius: 6px;
  outline: none;
  color: #fff;
  background: var(--primary-color);
  box-shadow: 0 5px 14px rgba(14, 59, 151, 0.22);
  font-size: 16px;
  font-weight: lighter;
  letter-spacing: 1px;
  line-height: 1.35;
  text-decoration: none;
  transition: transform 0.32s ease, box-shadow 0.32s ease, background-color 0.32s ease;
}

.btn-consult::after {
  content: "";
  position: absolute;
  top: 0;
  left: -85%;
  width: 48%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.48), transparent);
  transform: skewX(-22deg);
  transition: left 0.55s ease;
}

.btn-consult:hover,
.btn-consult:focus-visible {
  color: #fff;
  background: var(--primary-deep);
  box-shadow: 0 9px 22px rgba(14, 59, 151, 0.3);
  transform: translateY(-3px);
  text-decoration: none;
}

.btn-consult:hover::after,
.btn-consult:focus-visible::after {
  left: 140%;
}

/* ==========================================================================
   模块一：智能化私车公用场景
   ========================================================================== */
.scenario-section {
  background-color: #F1F3F5;
  background-image: url("https://cdn.tianxia51.cn/release/website/assets/images/module-one/scenario-bg.png");
  background-position: center top;
  background-size: cover;
  background-repeat: no-repeat;
}

.scenario-figure {
  position: relative;
  z-index: 1;
  width: 100%;
  margin: 0 auto;
}

.scenario-figure img {
  display: block;
  width: 100%;
  height: auto;
}

/* ==========================================================================
   模块二：私车公用管理架构
   ========================================================================== */
.architecture-section {
  --architecture-gradient: linear-gradient(100deg, #9DB9FF 0%, #5680FF 46%, #0A43EB 100%);
  --architecture-gradient-hover: linear-gradient(100deg, #86A8FF 0%, #3F6EFF 46%, #003BDF 100%);
  --architecture-side-gradient: linear-gradient(180deg, #A8C0FF 0%, #5E85FF 42%, #0A43EB 100%);
  --architecture-panel-gradient: linear-gradient(100deg, #EEF3FF 0%, #F9FBFF 100%);
  --architecture-border: #1762AD;
  background: #fff;
}

.architecture-board {
  width: min(100%, 1100px);
  margin: 0 auto;
  padding: 4px;
  border-radius: 8px;
}

.architecture-row {
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr);
  gap: 8px;
  margin-bottom: 8px;
}

.architecture-row:last-child {
  margin-bottom: 0;
}

.architecture-side-title {
  display: flex;
  min-height: 58px;
  padding: 12px 8px;
  align-items: center;
  justify-content: center;
  border-radius: 5px;
  color: #fff;
  background: var(--architecture-side-gradient);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.35);
  font-size: 16px;
  font-weight: 400;
  letter-spacing: 1px;
  line-height: 1.5;
  text-align: center;
}

.architecture-cells {
  display: grid;
  gap: 8px;
  min-width: 0;
}

.architecture-cells-five {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.architecture-cells-six {
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.architecture-cells-four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.architecture-cells-three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.architecture-cells span,
.group-cells span {
  display: flex;
  min-width: 0;
  min-height: 34px;
  padding: 6px 5px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(14, 59, 151, 0.18);
  border-radius: 3px;
  color: #333;
  background: rgba(255, 255, 255, 0.96);
  font-size: 14px;
  font-weight: 400;
  line-height: 1.35;
  text-align: center;
  transition: color 0.3s ease, background 0.3s ease, border-color 0.3s ease,
    box-shadow 0.3s ease, transform 0.3s ease;
}

.architecture-cells span:hover,
.group-cells span:hover {
  z-index: 1;
  border-color: transparent;
  color: #fff;
  background: var(--architecture-gradient-hover);
  box-shadow: 0 3px 8px rgba(14, 59, 151, 0.24);
  transform: scale(1.05);
}

/* 数据看板和使用对象保持独立描边框效果，仅做上浮和阴影。 */
.overview-row > .architecture-cells span:hover,
.target-row > .architecture-cells span:hover {
  border-color: rgba(255, 255, 255, 0.82);
  color: #fff;
  background: var(--architecture-gradient-hover);
  box-shadow: 0 6px 15px rgba(14, 59, 151, 0.18);
  transform: translateY(-2px);
}

.overview-row > .architecture-cells span,
.target-row > .architecture-cells span {
  border-color: rgba(255, 255, 255, 0.78);
  color: #fff;
  background: var(--architecture-gradient);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.28);
}

.overview-row > .architecture-cells,
.target-row > .architecture-cells {
  padding: 11px;
  border: 1px solid var(--architecture-border);
  border-radius: 5px;
  background: var(--architecture-panel-gradient);
}

.business-row > .architecture-side-title {
  min-height: 322px;
}

.business-content {
  padding: 12px;
  border: 1px solid var(--architecture-border);
  border-radius: 5px;
  background: var(--architecture-panel-gradient);
}

.business-groups {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.architecture-group {
  min-width: 0;
  padding: 9px;
  border: 1px solid rgba(255, 255, 255, 0.68);
  border-radius: 5px;
  background: var(--architecture-gradient);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.28);
  transition: filter 0.28s ease, box-shadow 0.28s ease;
}

.architecture-group:hover {
  filter: saturate(1.08);
  box-shadow: 0 8px 18px rgba(14, 59, 151, 0.16);
}

.architecture-group .group-cells span,
.base-data-row .architecture-cells span,
.support-group .architecture-cells span {
  border-color: rgba(255, 255, 255, 0.72);
  color: #fff;
  background: rgba(8, 55, 190, 0.2);
}

.architecture-group h3,
.base-data-row h3,
.support-group h3 {
  margin: 0;
  color: #fff;
  font-size: 15px;
  font-weight: 400;
  letter-spacing: 1px;
  line-height: 1.4;
  text-align: center;
}

.architecture-group h3 {
  padding: 2px 0 9px;
}

.group-cells {
  display: grid;
  gap: 6px;
}

.base-data-row {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 8px;
  margin-top: 10px;
  padding: 8px;
  border-radius: 5px;
  background: var(--architecture-gradient);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.28);
}

.base-data-row h3 {
  display: flex;
  align-items: center;
  justify-content: center;
}

.base-data-row .architecture-cells span,
.target-row .architecture-cells span {
  min-height: 32px;
  font-size: 12px;
}

.support-row > .architecture-side-title {
  min-height: 112px;
}

.support-content {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 10px;
  padding: 10px;
  border: 1px solid var(--architecture-border);
  border-radius: 5px;
  background: var(--architecture-panel-gradient);
}

.support-group {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  gap: 8px;
  padding: 8px;
  align-items: stretch;
  border: 1px solid rgba(255, 255, 255, 0.68);
  border-radius: 5px;
  background: var(--architecture-gradient);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.28);
}

.support-group h3 {
  display: flex;
  align-items: center;
  justify-content: center;
}

.target-row .architecture-side-title {
  min-height: 54px;
}

/* ==========================================================================
   模块三：六大应用亮点与产品截图轮播
   ========================================================================== */
.highlights-section {
  background-color: var(--soft-bg);
  background-image: url("https://cdn.tianxia51.cn/release/website/assets/images/module-three/section-bg.png");
  background-position: center center;
  background-size: cover;
  background-repeat: no-repeat;
}

.highlight-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 30px 36px;
}

.highlight-card {
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 270px;
  padding: 25px 22px;
  overflow: hidden;
  flex-direction: column;
  align-items: center;
  border: 2px solid var(--primary-color);
  border-radius: 12px;
  outline: none;
  color: #222;
  background: rgba(255, 255, 255, 0);
  text-align: center;
  transition: color 0.42s ease, transform 0.36s ease, box-shadow 0.36s ease, border-color 0.36s ease;
}

.highlight-card::before {
  content: "";
  position: absolute;
  z-index: 0;
  inset: 0;
  opacity: 0;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
  transition: opacity 0.42s ease;
}

.highlight-card > * {
  position: relative;
  z-index: 1;
}

.highlight-card:hover,
.highlight-card:focus-visible {
  border-color: var(--primary-light);
  color: #fff;
  box-shadow: 0 14px 28px rgba(14, 59, 151, 0.24);
  transform: translateY(-6px);
}

.highlight-card:hover::before,
.highlight-card:focus-visible::before {
  opacity: 1;
}

.highlight-card img {
  width: 64px;
  height: 64px;
  margin-bottom: 13px;
  object-fit: contain;
  flex: 0 0 auto;
  transition: filter 0.42s ease, transform 0.42s ease;
}

.highlight-card:hover img,
.highlight-card:focus-visible img {
  filter: brightness(0) invert(1);
  transform: scale(1.06);
}

.highlight-card h3 {
  margin: 0 0 11px;
  color: inherit;
  font-size: 18px;
  font-weight: 400;
  letter-spacing: 1px;
  line-height: 1.4;
}

.highlight-card p {
  margin: 0;
  color: inherit;
  font-size: 15px;
  font-weight: lighter;
  letter-spacing: 1px;
  line-height: 1.65;
  text-align: justify;
}

.product-carousel {
  position: relative;
  display: grid;
  grid-template-columns: 35px minmax(0, 1fr) 35px;
  column-gap: 15px;
  width: 100%;
  margin-top: 58px;
  padding: 34px 20px;
  align-items: center;
  border: 1px solid rgba(14, 59, 151, 0.06);
  border-radius: 14px;
  outline: none;
  background: rgba(255, 255, 255, 0.97);
  box-shadow: var(--card-shadow);
}

.product-stage {
  position: relative;
  width: 100%;
  height: 550px;
  overflow: hidden;
  background: #fff;
}

.product-slide {
  position: absolute;
  display: flex;
  margin: 0;
  inset: 0;
  opacity: 0;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  transform: translateX(18px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.product-slide.is-active {
  z-index: 1;
  opacity: 1;
  pointer-events: auto;
  transform: translateX(0);
}

.product-slide img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.carousel-nav {
  position: relative;
  z-index: 4;
  display: flex;
  width: 35px;
  height: 60px;
  padding: 0;
  align-items: center;
  justify-content: center;
  border: 0;
  outline: none;
  opacity: 0.62;
  background: transparent;
  cursor: pointer;
  filter: drop-shadow(0 3px 6px rgba(14, 59, 151, 0.16));
  transform: none;
  transition: opacity 0.28s ease, filter 0.28s ease, transform 0.28s ease;
}

.carousel-nav:hover,
.carousel-nav:focus-visible {
  opacity: 1;
  background: transparent;
  filter: drop-shadow(0 5px 9px rgba(14, 59, 151, 0.28));
  transform: scale(1.1);
}

.carousel-nav img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.carousel-prev {
  left: auto;
}

.carousel-next {
  right: auto;
}

/* ==========================================================================
   模块四：客户服务展示（结构与 car.html 保持一致）
   ========================================================================== */
.customers-section {
  padding: 58px 0 42px;
  border-top: 1px solid #F3F3F3;
  background: #fff;
}

.customers-container {
  max-width: 1240px;
}

.customers-title {
  margin-bottom: 50px;
  text-align: center;
}

.customers-title h2 {
  margin: 0;
  color: #333;
  font-size: 24px;
  font-weight: 400;
  letter-spacing: 2px;
  line-height: 1.45;
}

.customers-title p {
  margin: 7px 0 0;
  color: #999;
  font-size: 14px;
  font-weight: 300;
  letter-spacing: 1px;
  line-height: 1.4;
}

.case-images {
  width: 100%;
}

.case-images ul {
  display: flex;
  width: 100%;
  margin: 0;
  padding: 0;
  list-style: none;
}

.case-images li {
  display: flex;
  width: 20%;
  height: 150px;
  align-items: flex-start;
  justify-content: center;
  text-align: center;
}

.case-images img {
  max-width: 100%;
  height: auto;
  object-fit: contain;
}

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* ==========================================================================
   响应式布局
   ========================================================================== */
@media (max-width: 1100px) {
  .architecture-row {
    grid-template-columns: 100px minmax(0, 1fr);
  }

  .architecture-side-title {
    font-size: 15px;
  }

  .architecture-cells span,
  .group-cells span {
    padding-right: 3px;
    padding-left: 3px;
    font-size: 12px;
  }

  .architecture-group h3,
  .base-data-row h3,
  .support-group h3 {
    font-size: 14px;
  }

  .highlight-grid {
    gap: 26px;
  }
}

@media (max-width: 991px) {
  .page-section {
    padding: 52px 0;
  }

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

  .business-row > .architecture-side-title {
    min-height: 470px;
  }

  .support-content {
    grid-template-columns: 1fr;
  }

  .support-row > .architecture-side-title {
    min-height: 196px;
  }

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

  .highlight-card {
    min-height: 260px;
  }

  .product-stage {
    height: auto;
    aspect-ratio: 15 / 7;
  }

}

@media (max-width: 767px) {
  .page-container,
  .customers-container {
    padding-right: 16px;
    padding-left: 16px;
  }

  .page-section {
    padding: 42px 0;
  }

  .section-title {
    margin-bottom: 30px;
  }

  .section-title h2,
  .customers-title h2 {
    font-size: 22px;
  }

  .section-title p {
    font-size: 16px;
  }

  .consult-wrap {
    margin-top: 32px;
  }

  .architecture-board {
    padding: 3px;
  }

  .architecture-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 5px;
  }

  .architecture-side-title,
  .business-row > .architecture-side-title,
  .support-row > .architecture-side-title,
  .target-row .architecture-side-title {
    min-height: auto;
    padding: 8px;
  }

  .architecture-side-title br {
    display: none;
  }

  .overview-row > .architecture-cells,
  .target-row > .architecture-cells {
    padding: 8px;
  }

  .architecture-cells-six,
  .architecture-cells-five,
  .architecture-cells-four {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .business-content {
    padding: 8px;
  }

  .business-groups {
    gap: 8px;
  }

  .base-data-row {
    grid-template-columns: minmax(0, 1fr);
  }

  .base-data-row h3 {
    padding: 4px 0;
  }

  .support-group {
    grid-template-columns: minmax(0, 1fr);
  }

  .support-group h3 {
    padding: 3px 0;
  }

  .highlight-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
  }

  .highlight-card {
    min-height: auto;
  }

  .product-carousel {
    grid-template-columns: 28px minmax(0, 1fr) 28px;
    column-gap: 15px;
    margin-top: 40px;
    padding: 22px 8px;
    border-radius: 10px;
  }

  .carousel-nav {
    width: 28px;
    height: 48px;
  }

  .carousel-prev {
    left: auto;
  }

  .carousel-next {
    right: auto;
  }

  .customers-section {
    padding: 42px 0 28px;
  }

  .customers-title {
    margin-bottom: 34px;
  }

  .case-images {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px 12px;
  }

  .case-images ul {
    display: contents;
  }

  .case-images li {
    width: 100% !important;
    height: 88px;
    padding: 0 6px;
    align-items: center;
  }

  .case-images img {
    max-width: 100% !important;
    max-height: 72px;
    margin-top: 0 !important;
  }
}

@media (max-width: 480px) {
  .architecture-cells-six,
  .architecture-cells-five,
  .architecture-cells-four,
  .architecture-cells-three,
  .business-groups {
    grid-template-columns: minmax(0, 1fr);
  }

  .highlight-card {
    padding: 23px 18px;
  }

  .highlight-card p {
    font-size: 14px;
  }

}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}