/* ==========================================================================
   【公司名称】企业官网 · 样式表
   - 纯静态、无外部依赖（字体使用系统字体栈，图标使用内联 SVG）
   - 无内联样式（style 属性），便于配合严格 CSP
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. 设计令牌（Design Tokens）
   -------------------------------------------------------------------------- */
:root {
  /* 品牌色 · 企业蓝白体系 */
  --brand: #0B4F9E;
  --brand-dark: #06203F;
  --brand-deep: #041A33;
  --brand-light: #2E90E8;
  --brand-soft: #E8F2FD;
  --brand-gradient: linear-gradient(135deg, #1E7FE0 0%, #073B78 100%);

  /* 中性色 */
  --ink: #12233B;
  --text: #33465E;
  --muted: #6B7C93;
  --line: #E3E9F2;
  --bg-soft: #F4F7FB;
  --white: #FFFFFF;

  /* 尺寸与阴影 */
  /* 布局宽度：全屏铺满，仅保留安全边距 */
  --container: 100%;
  --container-pad: clamp(20px, 3.4vw, 72px);
  --header-h: 76px;
  --radius: 6px;
  --radius-lg: 10px;
  --shadow-sm: 0 2px 10px rgba(11, 79, 158, 0.06);
  --shadow-md: 0 14px 34px rgba(11, 79, 158, 0.12);
  --shadow-lg: 0 22px 48px rgba(6, 32, 63, 0.20);

  /* 字体：仅使用系统字体，避免任何外部字体请求 */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC",
    "Noto Sans CJK SC", "WenQuanYi Micro Hei", Arial, sans-serif;
}

/* --------------------------------------------------------------------------
   2. 基础重置
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  /* 横向裁切放在根元素：既能兜底防止横向滚动，又不会破坏 position: sticky */
  overflow-x: hidden;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--white);
}

h1, h2, h3, h4, p, figure, ul, ol {
  margin: 0;
}

ul, ol {
  padding: 0;
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  border: 0;
}

/* <picture> 仅用于 WebP 格式切换，布局上完全透明，不影响原有的 img 选择器 */
picture {
  display: contents;
}

a {
  color: inherit;
  text-decoration: none;
}

strong {
  font-weight: 700;
}

button {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--brand-light);
  outline-offset: 3px;
}

/* 图标精灵容器：不占位、不可见 */
.svg-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.icon {
  display: block;
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

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

.skip-link {
  position: absolute;
  top: -80px;
  left: 16px;
  z-index: 120;
  padding: 10px 18px;
  color: var(--white);
  background: var(--brand);
  border-radius: var(--radius);
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 12px;
}

/* --------------------------------------------------------------------------
   3. 通用组件：按钮 / 区块标题
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius);
  transition: transform 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
}

.btn .icon {
  width: 18px;
  height: 18px;
  transition: transform 0.25s ease;
}

.btn--primary {
  color: var(--white);
  background: var(--brand-gradient);
  box-shadow: 0 10px 24px rgba(11, 79, 158, 0.28);
}

.btn--primary:hover .icon {
  transform: translateX(4px);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 32px rgba(11, 79, 158, 0.34);
}

.section {
  padding: 92px 0;
  scroll-margin-top: var(--header-h);
}

.section--soft {
  background: var(--bg-soft);
}

.section--dark {
  color: rgba(255, 255, 255, 0.78);
  background: var(--brand-dark);
  background-image: radial-gradient(circle at 82% 12%, rgba(46, 144, 232, 0.22) 0%, rgba(6, 32, 63, 0) 46%);
}

.section__head {
  max-width: 760px;
  margin: 0 auto 56px;
  text-align: center;
}

.section__head--left {
  margin: 0 0 46px;
  text-align: left;
}

.section__eyebrow {
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--brand);
}

.section__title {
  position: relative;
  margin-top: 14px;
  padding-bottom: 18px;
  font-size: 2.1rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink);
}

.section__title::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 52px;
  height: 3px;
  border-radius: 3px;
  background: var(--brand-gradient);
  transform: translateX(-50%);
}

.section__head--left .section__title::after {
  left: 0;
  transform: none;
}

.section__lead {
  margin-top: 20px;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--muted);
}

.section--dark .section__title,
.section--dark .section__lead {
  color: var(--white);
}

.section--dark .section__lead {
  color: rgba(255, 255, 255, 0.7);
}

.section--dark .section__eyebrow {
  color: var(--brand-light);
}

/* --------------------------------------------------------------------------
   4. 顶栏
   -------------------------------------------------------------------------- */
/* 毛玻璃顶栏：半透明 + 背景模糊。
   - 底色保持浅色，但透明度更低，让背景图片的色调与光影明显透出，更轻盈高级
   - 依靠更大的模糊半径把图片化成柔和的色块，而不是清晰穿透，保证文字可读 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background-color: rgba(255, 255, 255, 0.5);
  border-bottom: 1px solid rgba(255, 255, 255, 0.35);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.5), 0 4px 18px rgba(6, 32, 63, 0.04);
  -webkit-backdrop-filter: blur(30px) saturate(190%) brightness(1.06);
  backdrop-filter: blur(30px) saturate(190%) brightness(1.06);
  transition: background-color 0.35s ease, box-shadow 0.35s ease;
}

/* 滚动后略微压实，仍保留通透感 */
.site-header.is-scrolled {
  background-color: rgba(255, 255, 255, 0.68);
  border-bottom-color: rgba(227, 233, 242, 0.8);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.55), 0 10px 28px rgba(6, 32, 63, 0.1);
}

/* 不支持背景模糊时退回接近不透明，保证文字始终可读 */
@supports not ((-webkit-backdrop-filter: blur(2px)) or (backdrop-filter: blur(2px))) {
  .site-header {
    background-color: rgba(255, 255, 255, 0.97);
  }

  .site-header.is-scrolled {
    background-color: rgba(255, 255, 255, 0.98);
  }
}

.site-header__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 28px;
  min-height: var(--header-h);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}

.brand__mark {
  width: auto;
  height: 36px;
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.brand__name {
  font-size: 1.06rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.site-nav {
  flex: 0 1 auto;
  min-width: 0;
  justify-self: center;
  margin-left: 0;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 26px;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.site-nav__list::-webkit-scrollbar {
  display: none;
}

.site-nav__link {
  position: relative;
  display: block;
  flex: 0 0 auto;
  white-space: nowrap;
  padding: 6px 2px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink);
  transition: color 0.2s ease;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--brand-gradient);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.25s ease;
}

.site-nav__link:hover,
.site-nav__link.is-active {
  color: var(--brand);
}

.site-nav__link:hover::after,
.site-nav__link.is-active::after {
  transform: scaleX(1);
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 18px;
  flex: 0 0 auto;
  justify-self: end;
}

.hotline {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--text);
  white-space: nowrap;
}

.hotline .icon {
  width: 16px;
  height: 16px;
  color: var(--brand);
}

.hotline__value {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--brand);
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.lang-toggle .icon {
  width: 16px;
  height: 16px;
  color: var(--brand);
}

.lang-toggle:hover {
  color: var(--brand);
  border-color: var(--brand-light);
  background: var(--brand-soft);
}

.lang-switch {
  position: relative;
}

.lang-toggle .icon--caret {
  width: 14px;
  height: 14px;
  margin-left: -2px;
  color: var(--muted);
  transition: transform 0.2s ease;
}

.lang-toggle {
  flex: 0 0 auto;
  white-space: nowrap;
}

.lang-toggle[aria-expanded="true"] .icon--caret {
  transform: rotate(180deg);
}

.lang-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 80;
  min-width: 150px;
  margin: 0;
  padding: 6px;
  list-style: none;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s ease;
}

.lang-menu.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-menu__item {
  display: block;
  width: 100%;
  padding: 9px 12px;
  font-family: inherit;
  font-size: 0.84rem;
  color: var(--text);
  text-align: left;
  background: none;
  border: 0;
  border-radius: 6px;
  cursor: pointer;
  transition: color 0.15s ease, background-color 0.15s ease;
}

.lang-menu__item:hover {
  color: var(--brand);
  background: var(--brand-soft);
}

.lang-menu__item.is-active {
  font-weight: 700;
  color: var(--brand);
  background: var(--brand-soft);
}

.lang-menu__item:focus-visible,
.lang-toggle:focus-visible {
  outline: 2px solid var(--brand-light);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   5. 首页首屏（自动轮播，无用户操作）
   -------------------------------------------------------------------------- */
/* 首屏向上延伸至顶栏之下（负外边距 + 补偿高度），
   使毛玻璃顶栏背后始终压着大图，半透明效果才真正可见；
   首屏文案为底部对齐，不受影响 */
.hero {
  position: relative;
  height: calc(clamp(560px, 84vh, 880px) + var(--header-h));
  margin-top: calc(-1 * var(--header-h));
  overflow: hidden;
  background: var(--brand-deep);
}

.hero__slides {
  position: absolute;
  inset: 0;
}

.hero__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  transition: opacity 1s ease;
}

/* 背景层：独立伪元素，便于做缓慢的缩放动效而不影响文字 */
.hero__slide::before {
  content: "";
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transform: scale(1.07);
  transition: transform 9s linear;
}

.hero__slide--1::before {
  background-image: url("../img/banners/hero-02-border-checkpoint.jpg");
  background-image: -webkit-image-set(url("../img/banners/hero-02-border-checkpoint.webp") type("image/webp"), url("../img/banners/hero-02-border-checkpoint.jpg") type("image/jpeg"));
  background-image: image-set(url("../img/banners/hero-02-border-checkpoint.webp") type("image/webp"), url("../img/banners/hero-02-border-checkpoint.jpg") type("image/jpeg"));
}
.hero__slide--2::before {
  background-image: url("../img/banners/hero-05-rail-container-yard.jpg");
  background-image: -webkit-image-set(url("../img/banners/hero-05-rail-container-yard.webp") type("image/webp"), url("../img/banners/hero-05-rail-container-yard.jpg") type("image/jpeg"));
  background-image: image-set(url("../img/banners/hero-05-rail-container-yard.webp") type("image/webp"), url("../img/banners/hero-05-rail-container-yard.jpg") type("image/jpeg"));
}
.hero__slide--3::before {
  background-image: url("../img/banners/hero-07-air-cargo-loading.jpg");
  background-image: -webkit-image-set(url("../img/banners/hero-07-air-cargo-loading.webp") type("image/webp"), url("../img/banners/hero-07-air-cargo-loading.jpg") type("image/jpeg"));
  background-image: image-set(url("../img/banners/hero-07-air-cargo-loading.webp") type("image/webp"), url("../img/banners/hero-07-air-cargo-loading.jpg") type("image/jpeg"));
}

/* 遮罩层：保证文字可读性与专业质感 */
.hero__slide::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(4, 26, 51, 0.88) 0%, rgba(4, 26, 51, 0.66) 44%, rgba(4, 26, 51, 0.2) 100%);
}

.hero__slide.is-active {
  opacity: 1;
}

.hero__slide.is-active::before {
  transform: scale(1);
}

.hero__content {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding-top: 40px;
  padding-bottom: 136px;
}

.hero__eyebrow {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: #8CC7FF;
}

.hero__title {
  max-width: 19em;
  margin-top: 18px;
  font-size: 2.9rem;
  font-weight: 700;
  line-height: 1.28;
  color: var(--white);
  letter-spacing: 0.01em;
}

.hero__sub {
  max-width: 34em;
  margin-top: 20px;
  font-size: 1.04rem;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.82);
}

.hero__content .btn {
  margin-top: 34px;
}

.hero__controls {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 42px;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
}

.hero__dots {
  display: flex;
  align-items: center;
  gap: 10px;
}

.hero__dot {
  position: relative;
  width: 30px;
  height: 28px;
  padding: 0;
  background: transparent;
  border: 0;
  cursor: pointer;
  transition: width 0.35s ease;
}

.hero__dot::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 3px;
  margin-top: -1.5px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.34);
  transition: background-color 0.35s ease;
}

.hero__dot.is-active {
  width: 52px;
}

.hero__dot.is-active::before {
  background: var(--white);
}

/* 左右切换箭头：置于首屏两侧，默认半透明 */
.hero__nav {
  position: absolute;
  top: 50%;
  z-index: 4;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  padding: 0;
  color: var(--white);
  background: rgba(255, 255, 255, 0.10);
  border: 1px solid rgba(255, 255, 255, 0.26);
  border-radius: 50%;
  cursor: pointer;
  opacity: 0.5;
  transform: translateY(-50%);
  transition: opacity 0.25s ease, background-color 0.25s ease;
}

.hero__nav:hover,
.hero__nav:focus-visible {
  opacity: 1;
  background: rgba(255, 255, 255, 0.26);
}

.hero__nav--prev {
  left: 28px;
}

.hero__nav--next {
  right: 28px;
}

.hero__nav .icon {
  width: 20px;
  height: 20px;
}

.hero__nav--prev .icon {
  transform: rotate(180deg);
}

.hero__counter {
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.78);
}

/* --------------------------------------------------------------------------
   6. 核心业务
   -------------------------------------------------------------------------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.svc-card {
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.svc-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  z-index: 3;
  width: 100%;
  height: 3px;
  background: var(--brand-gradient);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.35s ease;
}

.svc-card:hover {
  transform: translateY(-6px);
  border-color: #CFE0F5;
  box-shadow: var(--shadow-md);
}

.svc-card:hover::before {
  transform: scaleX(1);
}

/* 卡片配图：4K 原图按 16:9 铺满，hover 缓慢推近 */
.svc-card__media {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--brand-deep);
}

.svc-card__media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(
    180deg,
    rgba(4, 26, 51, 0.10) 0%,
    rgba(4, 26, 51, 0) 42%,
    rgba(4, 26, 51, 0.46) 100%
  );
}

.svc-card__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transform: scale(1.01);
  transition: transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.svc-card:hover .svc-card__media img {
  transform: scale(1.055);
}

.svc-card__icon {
  position: absolute;
  left: 20px;
  bottom: 18px;
  z-index: 2;
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  color: var(--brand);
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(4, 26, 51, 0.24);
  backdrop-filter: blur(6px);
  transition: color 0.3s ease, background-color 0.3s ease, transform 0.3s ease;
}

.svc-card__icon .icon {
  width: 26px;
  height: 26px;
}

.svc-card:hover .svc-card__icon {
  color: var(--white);
  background: var(--brand-gradient);
  transform: translateY(-2px);
}

.svc-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 24px 28px 30px;
}

.svc-card__name {
  font-size: 1.16rem;
  font-weight: 700;
  color: var(--ink);
}

.svc-card__tag {
  margin-top: 8px;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  color: var(--brand);
}

.svc-card__desc {
  margin-top: 14px;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   7. 全球网络
   -------------------------------------------------------------------------- */
.network__body {
  display: grid;
  grid-template-columns: 1.62fr 1fr;
  gap: 42px;
  align-items: start;
}

.network__map {
  margin: 0;
}

.network__map img {
  display: block;
  width: 100%;
  border: 1px solid rgba(96, 178, 240, 0.18);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg), 0 0 60px rgba(20, 96, 160, 0.28);
}

.network__regions {
  display: grid;
  gap: 12px;
}

.region-chip {
  padding: 16px 20px;
  background: rgba(255, 255, 255, 0.06);
  border-left: 3px solid var(--brand-light);
  border-radius: var(--radius);
  transition: background-color 0.25s ease, transform 0.25s ease;
}

.region-chip:hover {
  background: rgba(255, 255, 255, 0.11);
  transform: translateX(3px);
}

.region-chip__name {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
}

.region-chip__count {
  display: block;
  margin-top: 5px;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.6);
}

/* --------------------------------------------------------------------------
   8. 服务数据
   -------------------------------------------------------------------------- */
.stats {
  padding: 66px 0;
  background: var(--white);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat__num {
  font-size: 2.7rem;
  font-weight: 700;
  line-height: 1.15;
  color: var(--brand);
  letter-spacing: 0.01em;
}

.stat__num span {
  color: var(--brand-light);
}

.stat__label {
  margin-top: 10px;
  font-size: 0.94rem;
  color: var(--muted);
}

/* 服务能力：文字型条目（非数字），单独缩小字号 */
.stat__num--text {
  font-size: 1.14rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

/* --------------------------------------------------------------------------
   9. 我们的优势
   -------------------------------------------------------------------------- */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.adv-card {
  position: relative;
  display: flex;
  overflow: hidden;
  background: var(--brand-soft);
  border: 1px solid rgba(46, 144, 232, 0.16);
  border-radius: var(--radius);
  box-shadow: 0 10px 26px rgba(11, 79, 158, 0.10);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

/* 浅色渐变遮罩：柔和抽象配图，同时保证深色文字清晰可读 */
.adv-card::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(
    155deg,
    rgba(244, 249, 255, 0.52) 0%,
    rgba(244, 249, 255, 0.68) 55%,
    rgba(244, 249, 255, 0.88) 100%
  );
}

.adv-card__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 0.8s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.adv-card:hover {
  transform: translateY(-6px);
  border-color: rgba(46, 144, 232, 0.42);
  box-shadow: 0 16px 36px rgba(11, 79, 158, 0.16);
}

.adv-card:hover .adv-card__bg {
  transform: scale(1.05);
}

.adv-card__body {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  width: 100%;
  padding: 34px 30px 32px;
}

.adv-card__no {
  align-self: flex-start;
  padding: 5px 12px;
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--brand);
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(11, 79, 158, 0.14);
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(11, 79, 158, 0.06);
}

.adv-card__name {
  margin-top: 16px;
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--ink);
}

.adv-card__desc {
  margin-top: 12px;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--text);
}

/* --------------------------------------------------------------------------
   9b. 常见问答
   -------------------------------------------------------------------------- */
.faq-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  counter-reset: faq;
}

.faq-item {
  position: relative;
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  column-gap: 28px;
  align-items: start;
  padding: 26px 34px 28px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

/* 首条以品牌浅蓝底色区分，其余保持统一横栏 */
.faq-item:first-child {
  background: linear-gradient(90deg, #F3F8FF 0%, #FFFFFF 72%);
  border-color: #D7E7F8;
}

.faq-item::before {
  counter-increment: faq;
  content: "0" counter(faq);
  grid-column: 1;
  grid-row: 1 / span 2;
  margin-top: 3px;
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--brand);
}

.faq-item:hover {
  transform: translateX(4px);
  border-color: #CFE0F5;
  box-shadow: var(--shadow-md);
}

.faq-item__q {
  grid-column: 2;
  grid-row: 1;
  font-size: 1.08rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

.faq-item__a {
  grid-column: 2;
  grid-row: 2;
  margin-top: 9px;
  font-size: 0.93rem;
  line-height: 1.9;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   10. 关于我们
   -------------------------------------------------------------------------- */
.about__intro {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 52px;
  align-items: center;
}

.about__p {
  max-width: 42em;
  margin-top: 20px;
  font-size: 0.98rem;
  line-height: 1.95;
  color: var(--muted);
}

.about__media {
  margin: 0;
}

.about__media img {
  display: block;
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  margin-top: 60px;
}

.about-card {
  padding: 30px 26px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.about-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-sm);
}

.about-card__icon {
  display: grid;
  place-items: center;
  width: 50px;
  height: 50px;
  color: var(--brand);
  background: var(--brand-soft);
  border-radius: 12px;
}

.about-card__icon .icon {
  width: 24px;
  height: 24px;
}

.about-card__name {
  margin-top: 20px;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--ink);
}

.about-card__desc {
  margin-top: 10px;
  font-size: 0.87rem;
  line-height: 1.75;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   11. 联系我们
   -------------------------------------------------------------------------- */
.contact__body {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 32px;
  align-items: stretch;
}

.contact__left {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-cards {
  display: grid;
  gap: 16px;
}

/* 联系人名片 */
.contact-card {
  position: relative;
  padding: 26px 30px;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.contact-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 3px;
  background: var(--brand-gradient);
}

.contact-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.contact-card__head {
  display: flex;
  align-items: center;
  gap: 16px;
}

.contact-card__avatar {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 54px;
  height: 54px;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--brand);
  background: var(--brand-soft);
  border-radius: 50%;
}

.contact-card__name {
  font-size: 1.14rem;
  font-weight: 700;
  color: var(--ink);
}

.contact-card__role {
  margin-top: 4px;
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.contact-card__rows {
  display: grid;
  gap: 10px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
}

.contact-card__rows li {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  font-size: 0.96rem;
}

.contact-card__rows a {
  color: var(--ink);
  font-weight: 600;
  word-break: break-word;
  transition: color 0.2s ease;
}

.contact-card__rows a:hover {
  color: var(--brand);
}

.contact-card__ico {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  color: var(--brand);
  background: var(--brand-soft);
  border-radius: 8px;
}

.contact-card__ico .icon {
  width: 15px;
  height: 15px;
}

/* 公司地址条：与名片同宽，紧贴排列，避免空白 */
.contact__addr {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 22px;
  background: var(--bg-soft);
  border-radius: var(--radius-lg);
}

.contact__addr .icon {
  width: 20px;
  height: 20px;
  margin-top: 2px;
  color: var(--brand);
}

.contact__addr-label {
  display: block;
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.contact__addr-value {
  display: block;
  margin-top: 4px;
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.7;
  color: var(--ink);
}

.contact__map {
  height: 100%;
  min-height: 380px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

/* 地图铺满右列并与左侧内容等高，消除多余留白 */
.contact__map img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* --------------------------------------------------------------------------
   12. 页脚
   -------------------------------------------------------------------------- */
.site-footer {
  color: rgba(255, 255, 255, 0.7);
  background: var(--brand-deep);
}

.site-footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.3fr) minmax(0, 0.95fr);
  gap: 40px;
  padding-top: 76px;
  padding-bottom: 62px;
}

.site-footer__mark {
  width: 52px;
  height: 52px;
  padding: 9px;
  background: #FFFFFF;
  border-radius: 12px;
  object-fit: contain;
}

.site-footer__name {
  margin-top: 16px;
  font-size: 1.14rem;
  font-weight: 700;
  color: var(--white);
}

.site-footer__desc {
  max-width: 20em;
  margin-top: 12px;
  font-size: 0.87rem;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.58);
}

.site-footer__title {
  position: relative;
  margin-bottom: 20px;
  padding-bottom: 12px;
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--white);
}

.site-footer__title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 2px;
  border-radius: 2px;
  background: var(--brand-light);
}

.site-footer__links a {
  display: block;
  padding: 5px 0;
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.66);
  transition: color 0.2s ease, transform 0.2s ease;
}

.site-footer__links a:hover {
  color: var(--white);
  transform: translateX(4px);
}

.site-footer__contact li {
  display: flex;
  gap: 10px;
  padding: 5px 0;
  font-size: 0.86rem;
  line-height: 1.85;
}

.site-footer__contact li > * {
  min-width: 0;
  overflow-wrap: anywhere;
}

.site-footer__label {
  flex: 0 0 auto;
  color: rgba(255, 255, 255, 0.45);
}

.site-footer__contact strong {
  color: var(--white);
}

.qr-box {
  width: 132px;
  padding: 8px;
  background: var(--white);
  border-radius: 8px;
}

.qr-box svg,
.qr-box img {
  display: block;
  width: 100%;
  height: auto;
}

.site-footer__qr-caption {
  margin-top: 12px;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.55);
}

.site-footer__hotline {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 14px;
  padding-top: 22px;
  padding-bottom: 22px;
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.6);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.site-footer__hotline strong {
  font-size: 1.42rem;
  letter-spacing: 0.04em;
  color: var(--white);
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 26px;
  padding-bottom: 34px;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.42);
}

.site-footer__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

/* --------------------------------------------------------------------------
   13. 返回顶部
   -------------------------------------------------------------------------- */
.to-top {
  position: fixed;
  right: 26px;
  bottom: 26px;
  z-index: 80;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  color: var(--white);
  background: var(--brand-gradient);
  border-radius: 50%;
  box-shadow: 0 12px 26px rgba(11, 79, 158, 0.34);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.to-top .icon {
  width: 20px;
  height: 20px;
  transform: rotate(-90deg);
}

.to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.to-top:hover {
  transform: translateY(-3px);
}

/* --------------------------------------------------------------------------
   14. 响应式
   -------------------------------------------------------------------------- */
/* 稍窄屏：首屏文字左让出两侧箭头所需空间 */
@media (max-width: 1360px) {
  .hero__content {
    padding-left: 96px;
  }
}

/* 中间宽度：收紧顶栏，避免单行内容拥挤 */
@media (max-width: 1240px) {
  .hotline__label {
    display: none;
  }

  .brand__name {
    font-size: 0.96rem;
  }

  .site-header__inner {
    gap: 20px;
  }

  .site-nav__list {
    gap: 18px;
  }

  .hotline__value {
    font-size: 0.88rem;
  }
}

/* 居中导航需要更宽的单行空间：低于此宽度改为两行，避免导航与右侧信息重叠 */
@media (max-width: 1360px) {
  .site-header {
    position: relative;
    z-index: 60;
  }

  .site-header__inner {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 20px;
    padding-top: 12px;
    padding-bottom: 10px;
  }

  .site-nav {
    order: 3;
    flex: 1 0 100%;
    width: 100%;
    margin-left: 0;
  }

  .site-nav__list {
    gap: 22px;
    padding-bottom: 4px;
    justify-content: center;
  }

  /* 两行布局下，右侧信息仍靠右对齐 */
  .site-header__actions {
    margin-left: auto;
  }

  /* 顶栏改为静态占位后，首屏不再向上延伸，避免大图盖住导航 */
  .hero {
    height: clamp(560px, 84vh, 880px);
    margin-top: 0;
  }

  .section {
    scroll-margin-top: 16px;
  }
}

@media (max-width: 1080px) {
  .card-grid,
  .adv-grid,
  .about-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .network__body,
  .about__intro,
  .contact__body {
    grid-template-columns: minmax(0, 1fr);
    gap: 36px;
  }

  .faq-list {
    grid-template-columns: 1fr;
  }

  /* 单列下地图恢复自适应高度，避免被拉伸裁切 */
  .contact__map {
    height: auto;
    min-height: 0;
  }

  .contact__map img {
    height: auto;
  }

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

  .hero__title {
    font-size: 2.4rem;
  }
}

@media (max-width: 1020px) {
  .section {
    padding: 70px 0;
    scroll-margin-top: 16px;
  }

  .hero__content {
    padding-bottom: 118px;
  }
}

@media (max-width: 640px) {
  /* 小屏：顶栏只保留品牌与语言切换，联系方式在「联系我们」区块中展示 */
  .site-header__actions .hotline {
    display: none;
  }

  .brand__name {
    font-size: 0.98rem;
  }

  .site-header__actions {
    gap: 12px;
  }

  /* 小屏导航可能超宽：改为左对齐并保持横向滚动，避免两端被裁切 */
  .site-nav__list {
    justify-content: flex-start;
    gap: 18px;
  }

  .section__title {
    font-size: 1.62rem;
  }

  .hero__title {
    font-size: 1.86rem;
  }

  .hero__sub {
    font-size: 0.95rem;
  }

  .hero {
    height: 88vh;
    min-height: 520px;
  }

  .hero__content {
    padding-left: var(--container-pad);
  }

  .hero__controls {
    gap: 12px;
    bottom: 32px;
  }

  .hero__nav {
    top: 30%;
    width: 38px;
    height: 38px;
  }

  .hero__nav--prev {
    left: 12px;
  }

  .hero__nav--next {
    right: 12px;
  }

  .card-grid,
  .adv-grid,
  .about-grid,
  .stats__grid {
    grid-template-columns: 1fr;
  }

  /* 小屏地图保持足够宽度，可横向滑动查看英文城市标签 */
  .network__map {
    overflow-x: auto;
    border-radius: var(--radius-lg);
  }

  .network__map img {
    width: 760px;
    min-width: 760px;
  }

  /* 小屏问答横栏：编号回到内容上方，保持单列可读 */
  .faq-item {
    grid-template-columns: 1fr;
    column-gap: 0;
    padding: 22px 22px 24px;
  }

  .faq-item::before {
    grid-column: 1;
    grid-row: 1;
    margin: 0 0 10px;
  }

  .faq-item__q {
    grid-column: 1;
    grid-row: 2;
    font-size: 1rem;
  }

  .faq-item__a {
    grid-column: 1;
    grid-row: 3;
  }

  .stats__grid {
    gap: 32px;
  }

  .stat__num {
    font-size: 2.2rem;
  }

  .stat__num--text {
    font-size: 1.06rem;
  }

  .site-footer__top {
    grid-template-columns: 1fr;
    gap: 34px;
    padding-top: 56px;
  }

  .site-footer__bottom,
  .site-footer__hotline {
    justify-content: flex-start;
  }

  .to-top {
    right: 18px;
    bottom: 18px;
  }
}

/* --------------------------------------------------------------------------
   15. 滚动入场动效（参考宇通官网：淡入上移 + 错峰延迟 + 标题横条展开）
   - 仅在启用 JS 且用户未开启「减少动态效果」时生效
   - 全部使用 animation / transition，不写入内联样式，兼容严格 CSP
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: no-preference) {
  /* 首屏文字：随当前幻灯片淡入上移（CTA 按钮不参与，避免破坏其 hover 动效） */
  html.js .hero__eyebrow,
  html.js .hero__title,
  html.js .hero__sub {
    opacity: 0;
    transform: translateY(26px);
    transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.22, 0.61, 0.36, 1);
  }

  html.js .hero__slide.is-active .hero__eyebrow {
    opacity: 1;
    transform: none;
  }

  html.js .hero__slide.is-active .hero__title {
    opacity: 1;
    transform: none;
    transition-delay: 0.4s;
  }

  html.js .hero__slide.is-active .hero__sub {
    opacity: 1;
    transform: none;
    transition-delay: 0.52s;
  }

  /* 内容区块：进入视口后淡入上移 */
  html.js .reveal {
    opacity: 0;
  }

  html.js .reveal.is-in {
    opacity: 1;
    animation: revealUp 0.7s cubic-bezier(0.22, 0.61, 0.36, 1) backwards;
  }

  /* 同组元素按顺序错峰出现 */
  html.js .reveal.is-in:nth-child(1) { animation-delay: 0.04s; }
  html.js .reveal.is-in:nth-child(2) { animation-delay: 0.1s; }
  html.js .reveal.is-in:nth-child(3) { animation-delay: 0.16s; }
  html.js .reveal.is-in:nth-child(4) { animation-delay: 0.22s; }
  html.js .reveal.is-in:nth-child(5) { animation-delay: 0.28s; }
  html.js .reveal.is-in:nth-child(6) { animation-delay: 0.34s; }
  html.js .reveal.is-in:nth-child(7) { animation-delay: 0.4s; }

  /* 区块标题下的横条：随标题一起展开 */
  html.js .section__head.reveal .section__title::after,
  html.js .about__text.reveal .section__title::after {
    width: 0;
    transition: width 0.6s 0.18s cubic-bezier(0.22, 0.61, 0.36, 1);
  }

  html.js .section__head.reveal.is-in .section__title::after,
  html.js .about__text.reveal.is-in .section__title::after {
    width: 52px;
  }
}

@keyframes revealUp {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* --------------------------------------------------------------------------
   16. 无障碍：尊重「减少动态效果」偏好
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .hero__slide::before {
    transform: none;
  }
}