/* ============================================================
   GLOBAL RESET & VARIABLES
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --blue-primary: #0075c2;
  --blue-dark: #056db1;
  --blue-mid: #0091c0;
  --blue-deep: #00375c;
  --orange: #ef7800;
  --text-dark: #333;
  --text-mid: #666;
  --text-light: #999;
  --text-en-light: #d8e3ef;
  --bg-grey: #f8f8f8;
  --white: #ffffff;
  --font-cn: 'Microsoft YaHei', '微软雅黑', 'PingFang SC', sans-serif;
  --font-num: 'Outfit', 'DIN Alternate', Arial, sans-serif;
  --container-max: 1600px;
  --container-pad: 160px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-cn);
  color: var(--text-dark);
  background: #fff;
  overflow-x: hidden;
  line-height: 1.6;
}

img {
  display: block;
  max-width: 100%;
}

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

ul {
  list-style: none;
}

/* ============================================================
   CONTAINER
   ============================================================ */
.container {
  width: 100%;
  max-width: calc(var(--container-max) + var(--container-pad) * 2);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn-orange {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: 9999px;
  background-color: var(--orange);
  color: #fff;
  font-family: var(--font-cn);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  border: none;
  box-shadow: 0 4px 6px -1px rgba(0,0,0,.1), 0 2px 4px -2px rgba(0,0,0,.1);
  transition: opacity .2s, transform .15s;
  white-space: nowrap;
}

.btn-orange img {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
  object-fit: contain;
  object-position: center;
}

.btn-orange:hover {
  opacity: .88;
  transform: translateY(-1px);
}

/* ============================================================
   SECTION TITLES
   ============================================================ */
.section-title-blue {
  font-size: 36px;
  font-weight: 700;
  color: var(--blue-primary);
  line-height: 1.2;
}

.section-title-en {
  font-size: 30px;
  font-weight: 700;
  color: var(--text-en-light);
  margin-top: 4px;
  line-height: 1.2;
}

.section-title-en-grey {
  font-size: 30px;
  font-weight: 700;
  color: var(--text-en-light);
  margin-top: 4px;
  line-height: 1.2;
}

.section-title-white {
  font-size: 36px;
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
}

.section-title-en-light {
  font-size: 30px;
  font-weight: 700;
  color: rgba(148, 168, 181, 1);
  margin-top: 4px;
  line-height: 1.2;
}

/* ============================================================
   HEADER
   ============================================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: background .35s ease, box-shadow .35s ease;
}

/* ---------- 滚动后：白底版 ---------- */
.header.scrolled {
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 2px 16px rgba(0, 0, 0, .08);
}

.header-inner {
  display: flex;
  align-items: center;
  height: 90px;
  padding: 0 var(--container-pad);
  max-width: calc(var(--container-max) + var(--container-pad) * 2);
  margin: 0 auto;
  gap: 0;
}

.logo {
  flex-shrink: 0;
  margin-right: 40px;
}

.logo img {
  height: 58px;
  width: auto;
  object-fit: contain;
}

/* ---------- NAV ---------- */
.nav {
  display: flex;
  align-items: center;
  flex: 1;
  gap: 0;
}

.nav-item {
  font-size: 16px;
  color: #fff;
  padding: 4px 16px;
  white-space: nowrap;
  transition: color .25s ease;
  position: relative;
}

/* 滚动后导航文字变深色 */
.header.scrolled .nav-item {
  color: #333;
}

.nav-item:hover {
  color: var(--orange);
}

.header.scrolled .nav-item:hover {
  color: var(--blue-dark);
}

.nav-item.active {
  color: var(--orange);
}

.header.scrolled .nav-item.active {
  color: var(--blue-dark);
}

.nav-item.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 16px;
  right: 16px;
  height: 2px;
  background: var(--orange);
  border-radius: 1px;
  transition: background .25s ease;
}

.header.scrolled .nav-item.active::after {
  background: var(--blue-dark);
}

/* 竖线分隔符 */
.nav-sep {
  display: inline-block;
  width: 1px;
  height: 15px;
  background: rgba(255, 255, 255, .45);
  flex-shrink: 0;
  transition: background .25s ease;
}

.header.scrolled .nav-sep {
  background: rgba(0, 0, 0, .15);
}

/* ---------- HEADER RIGHT ---------- */
.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  margin-left: auto;
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 16px;
  color: #fff;
  transition: color .25s ease;
}

.header.scrolled .lang-switch {
  color: #333;
}

.lang-divider {
  opacity: .5;
}

.lang-en {
  opacity: .57;
}

.search-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 35px;
  height: 35px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .15);
  cursor: pointer;
  transition: background .25s ease;
}

.header.scrolled .search-btn {
  background: rgba(0, 0, 0, .06);
}

.header.scrolled .search-btn:hover {
  background: rgba(0, 0, 0, .12);
}

/* 搜索图标在深色/浅色背景的滤镜适配 */
.search-btn img {
  width: 16px;
  height: 16px;
  filter: invert(1) brightness(2);
  transition: filter .25s ease;
}

.header.scrolled .search-btn img {
  filter: none;
}

/* ---------- 主导航二级下拉 ---------- */
.nav-slot {
  display: flex;
  align-items: center;
  position: relative;
}

.nav-has-sub .nav-dropdown {
  position: relative;
}

.nav-submenu {
  list-style: none;
  margin: 0;
  padding: 10px 0;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: calc(100% + 10px);
  min-width: 200px;
  background: var(--blue-dark, #0a3c6e);
  border-radius: 6px;
  box-shadow: 0 10px 28px rgba(0, 0, 0, .22);
  opacity: 0;
  visibility: hidden;
  transition: opacity .2s ease, visibility .2s ease;
  z-index: 1001;
}

.nav-submenu::before {
  content: '';
  position: absolute;
  bottom: 100%;
  left: 50%;
  margin-left: -7px;
  border: 7px solid transparent;
  border-bottom-color: var(--blue-dark, #0a3c6e);
}

.nav-submenu li {
  margin: 0;
}

.nav-sub-link {
  display: block;
  padding: 10px 20px;
  font-size: 15px;
  font-weight: 400;
  color: #fff;
  white-space: nowrap;
  transition: background .15s ease, color .15s ease;
}

.nav-sub-link:hover {
  background: rgba(255, 255, 255, .12);
  color: #fff;
}

.nav-has-sub:hover .nav-submenu,
.nav-slot.nav-has-sub:focus-within .nav-submenu {
  opacity: 1;
  visibility: visible;
}

.header.scrolled .nav-submenu {
  box-shadow: 0 12px 32px rgba(0, 0, 0, .18);
}

.search-btn:hover {
  background: rgba(255,255,255,.25);
}

.search-btn img {
  width: 16px;
  height: 16px;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: 16px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all .3s, background .25s ease;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  max-height: 998px;
  overflow: hidden;
  display: flex;
  align-items: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: rgba(0,0,0,.31);
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 0 var(--container-pad);
  max-width: calc(var(--container-max) + var(--container-pad) * 2);
  width: 100%;
  margin: 0 auto;
  margin-top: 60px;
}

.hero-title {
  font-size: 70px;
  font-weight: 400;
  font-family: var(--font-cn);
  color: #fff;
  line-height: 1.2;
  white-space: nowrap;
}

.hero-en {
  font-size: 40px;
  font-weight: 700;
  font-family: var(--font-cn);
  color: #fff;
  opacity: .07;
  margin-top: 8px;
  white-space: nowrap;
  line-height: 1.2;
}

.hero-sub {
  font-size: 20px;
  font-weight: 300;
  color: #fff;
  margin-top: 24px;
  line-height: 36px;
}

.hero-indicators {
  position: absolute;
  bottom: 60px;
  left: var(--container-pad);
  z-index: 2;
  font-size: 16px;
  color: #fff;
  display: flex;
  align-items: center;
}

.ind-bold {
  font-weight: 700;
  font-family: var(--font-cn);
}

.ind-light {
  font-weight: 300;
  opacity: .8;
}

/* JS-generated indicator buttons */
.hero-ind-btn {
  transition: opacity .2s;
}

.hero-ind-btn:not(.active) {
  opacity: .55;
}

/* ============================================================
   ABOUT
   ============================================================ */
.about {
  padding: 100px 0 80px;
  background: #fff;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 810px) 1fr;
  gap: 80px;
  align-items: center;
}

.about-img-wrap {
  position: relative;
  flex-shrink: 0;
}

.about-img {
  width: 100%;
  height: 475px;
  object-fit: cover;
  border-radius: 80px 0 0 0;
  display: block;
}

.about-badge {
  position: absolute;
  bottom: -20px;
  left: -20px;
  width: 70px;
  height: 70px;
}

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

.about-content {
  padding-top: 20px;
}

.about-text {
  font-size: 16px;
  font-weight: 300;
  color: var(--text-dark);
  line-height: 36px;
  margin-top: 24px;
  white-space: pre-line;
}

.about-text:first-of-type {
  margin-top: 28px;
}

.about-content .btn-orange {
  margin-top: 36px;
}

/* ============================================================
   STATS
   ============================================================ */
.stats {
  padding: 60px 0;
  background: #fff;
  /* border-top: 1px solid #f0f0f0; */
}

.stats-grid {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-width: 0;
}

.stat-num {
  font-family: var(--font-num);
  font-size: 60px;
  font-weight: 500;
  color: var(--text-dark);
  line-height: 1;
}

.stat-label {
  font-size: 16px;
  color: var(--text-mid);
  margin-top: 12px;
  white-space: nowrap;
}

/* ============================================================
   GLOBAL LAYOUT
   ============================================================ */
.global {
  position: relative;
  padding: 110px 0;
  overflow: hidden;
  background: #f5f9fd;
}

.global-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: .86;
}

.global-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.global-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.global-left {
  max-width: 520px;
}

.global-desc {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-dark);
  line-height: 36px;
  margin-top: 28px;
}

.global-stat-item {
  margin-top: 32px;
}

.global-stat-row {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.global-num {
  font-family: var(--font-cn);
  font-size: 24px;
  font-weight: 700;
  color: var(--orange);
}

.global-unit {
  font-size: 16px;
  font-weight: 400;
  color: var(--text-dark);
}

.global-stat-desc {
  font-size: 14px;
  font-weight: 300;
  color: var(--text-dark);
  margin-top: 6px;
  line-height: 36px;
}

.global-map {
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.global-map img {
  width: 100%;
  max-width: 680px;
  height: auto;
  object-fit: contain;
}

/* ============================================================
   SOLUTIONS
   ============================================================ */
.solutions {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.solutions-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.solutions-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: right center;
}

.solutions-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    90deg,
    rgba(5, 109, 177, 1) 0%,
    rgba(5, 109, 177, 1) 14.8%,
    rgba(0, 55, 92, 0.08) 44.8%,
    rgba(0, 55, 92, 0.04) 100%
  );
}

.solutions-body {
  position: relative;
  z-index: 2;
  padding: 100px 0 80px;
  flex: 1;
}

.solutions-header {
  margin-bottom: 40px;
}

.solutions-detail {
  max-width: 600px;
}

.solutions-active-title {
  font-size: 40px;
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 20px;
}

.solutions-active-desc {
  font-size: 16px;
  font-weight: 300;
  color: #fff;
  line-height: 36px;
  margin-bottom: 32px;
  opacity: .9;
}

/* Solutions Tabs */
.solutions-tabs {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
}

.solutions-tab {
  padding: 28px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  cursor: pointer;
  transition: background .25s;
  background: transparent;
  border-top: 1px solid rgba(255,255,255,.15);
}

.solutions-tab:hover,
.solutions-tab.active {
  background: var(--blue-mid);
}

.tab-icon {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
}

.tab-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.tab-title {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 6px;
}

.solutions-tab:not(.has-tab-sub) .tab-title {
  margin-bottom: 0;
}

.tab-sub {
  font-size: 14px;
  font-weight: 300;
  color: rgba(255,255,255,.75);
  line-height: 24px;
}

/* ============================================================
   CASES
   ============================================================ */
.cases {
  padding: 90px 0 100px;
  background: #fff;
}

.cases-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 36px;
}

.cases-filter {
  display: flex;
  gap: 40px;
  margin-bottom: 40px;
  border-bottom: 1px solid #e8e8e8;
  padding-bottom: 0;
}

.filter-btn {
  background: none;
  border: none;
  font-size: 18px;
  font-weight: 300;
  color: var(--text-dark);
  cursor: pointer;
  padding: 0 0 16px;
  position: relative;
  transition: color .2s;
  font-family: var(--font-cn);
  white-space: nowrap;
}

.filter-btn.active {
  color: var(--blue-dark);
  font-weight: 400;
}

.filter-btn.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--blue-dark);
}

.filter-btn:hover {
  color: var(--blue-dark);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.case-card {
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg-grey);
  border: 1px solid #d3e4f2;
  transition: transform .2s, box-shadow .2s;
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,.1);
}

.case-card:hover {
  background: linear-gradient(180deg, #1692d6, #066eb2);
}

.case-card:hover .case-info h4 {
  color: #fff;
}

.case-img {
  width: 100%;
  height: 299px;
  overflow: hidden;
}

.case-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .35s;
}

.case-card:hover .case-img img {
  transform: scale(1.04);
}

.case-info {
  padding: 22px 24px;
}

.case-info h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-dark);
  line-height: 1.4;
}

/* ============================================================
   CTA
   ============================================================ */
.cta {
  position: relative;
  min-height: 592px;
  overflow: hidden;
  display: flex;
  align-items: center;
}

.cta-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  transform: scaleY(-1);
}

.cta-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cta-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    90.18deg,
    rgba(40, 103, 178, 0.92) 1.06%,
    rgba(40, 103, 178, 0.75) 50%,
    rgba(101, 185, 103, 0.19) 98.7%
  );
}

.cta .container {
  position: relative;
  z-index: 2;
  width: 100%;
  padding-top: 80px;
  padding-bottom: 80px;
}

.cta-content {
  max-width: 758px;
}

.cta-eyebrow {
  font-size: 14px;
  font-weight: 700;
  color: #99f6e4;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.cta-title {
  font-size: 40px;
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 20px;
}

.cta-desc {
  font-size: 18px;
  font-weight: 300;
  color: rgba(240, 253, 250, 0.9);
  line-height: 29px;
  margin-bottom: 40px;
}

.cta-card {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 25px;
  width: 516px;
  max-width: 100%;
  background: rgba(255,255,255,.1);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 10px;
}

/* PC端 .cta-card-top 作为 flex 子项撑满剩余空间 */
.cta-card-top {
  display: contents;
}

.cta-card-icon-wrap {
  flex-shrink: 0;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,.4);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* 后台可换任意比例图标/SVG：在圆形容器内等比缩放，避免固定宽高导致拉伸 */
.cta-card-icon-wrap img {
  max-width: 72%;
  max-height: 72%;
  width: auto;
  height: auto;
  object-fit: contain;
  object-position: center;
  flex-shrink: 0;
}

.cta-card-text {
  flex: 1;
  min-width: 0;
}

.cta-card-text h4 {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}

.cta-card-text p {
  font-size: 12px;
  font-weight: 400;
  color: rgba(255,255,255,.7);
  line-height: 15px;
}

/* ============================================================
   CONTACT INFO
   ============================================================ */
.contact {
  padding: 60px 0;
  background: #fff;
}

.contact-inner {
  display: flex;
  align-items: center;
  gap: 60px;
}

.contact-titles {
  flex-shrink: 0;
  min-width: 200px;
}

.contact-items {
  display: flex;
  flex: 1;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 14px;
}

.contact-icon-wrap {
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* 联系卡片图标：不强制铺满 100%×100%，避免与全局 img{max-width:100%} 叠加后非正方形资源被拉变形 */
.contact-icon-wrap img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  object-position: center;
  flex-shrink: 0;
}

.contact-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.c-label {
  font-size: 14px;
  font-weight: 300;
  color: var(--text-light);
  line-height: 1.4;
}

.c-value {
  font-size: 16px;
  font-weight: 400;
  color: #000;
  line-height: 1.4;
  white-space: nowrap;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: #fff;
  padding-bottom: 32px;
}

.footer-divider-top {
  height: 1px;
  background: #e0e0e0;
  margin-bottom: 60px;
}

.footer-main {
  display: flex;
  gap: 60px;
  align-items: flex-start;
  padding-bottom: 60px;
}

.footer-brand {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.footer-logo img {
  height: 65px;
  width: auto;
  object-fit: contain;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #e7e5e4;
  overflow: hidden;
  transition: background .2s;
}

.social-link:hover {
  background: var(--blue-primary);
}

.social-link img {
  width: 15px;
  height: 15px;
  object-fit: contain;
}

.footer-nav {
  flex: 1;
  display: flex;
  gap: 35px;
  justify-content: flex-end;
  flex-wrap: wrap;
}

.footer-col h5 {
  font-size: 16px;
  font-weight: 700;
  color: #1c1917;
  margin-bottom: 20px;
  line-height: 24px;
}

.footer-col ul li {
  margin-bottom: 0;
}

.footer-col ul li a {
  font-size: 14px;
  font-weight: 400;
  color: #78716c;
  line-height: 30px;
  transition: color .2s;
}

.footer-col ul li a:hover {
  color: var(--blue-primary);
}

.footer-col-contact {
  min-width: 180px;
  max-width: 200px;
}

.footer-contact-info {
  margin-bottom: 16px;
}

.fc-label {
  font-size: 14px;
  font-weight: 700;
  color: #1c1917;
  line-height: 20px;
}

.fc-value {
  font-size: 14px;
  font-weight: 400;
  color: #78716c;
  line-height: 20px;
}

.footer-divider-bottom {
  height: 1px;
  background: #e0e0e0;
  margin-bottom: 24px;
}

.footer-bottom {
  text-align: center;
}

.footer-bottom p {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-dark);
  line-height: 16px;
}

/* ============================================================
   FLOATBAR（全站侧边快捷：联系页数据源）
   ============================================================ */
.site-floatbar {
  position: fixed;
  z-index: 10050;
  right: 0;
  top: 38%;
  transform: translateY(-50%);
  font-family: var(--font-cn);
}

.site-floatbar-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 10px 6px;
  margin: 10px 0;
  background: var(--white);
  border-radius: 10px 0 0 10px;
  box-shadow: -4px 4px 24px rgba(0, 0, 0, 0.1);
}

.site-floatbar-item {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 72px;
  padding: 10px 4px;
  color: #57534e;
  background: transparent;
  border: 0;
  cursor: pointer;
  text-decoration: none;
  font-size: 12px;
  line-height: 1.25;
  text-align: center;
  transition: color 0.2s, background 0.2s;
  border-radius: 8px;
}

.site-floatbar-item:hover,
.site-floatbar-item:focus {
  outline: none;
  color: var(--blue-primary);
  background: rgba(0, 117, 194, 0.06);
}

.site-floatbar-ico {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 6px;
  color: #57534e;
}

.site-floatbar-item:hover .site-floatbar-ico {
  color: var(--blue-primary);
}

.site-floatbar-ico svg {
  display: block;
}

.site-floatbar-txt {
  display: block;
  white-space: nowrap;
}

/* 企业客服：悬停显示二维码气泡 */
.site-floatbar-cs {
  position: relative;
}

.site-floatbar-trigger {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

.site-floatbar-pop {
  position: absolute;
  right: calc(100% + 14px);
  top: 50%;
  transform: translateY(-50%);
  min-width: 168px;
  max-width: 220px;
  padding: 0;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.site-floatbar-pop-inner {
  background: var(--white);
  border-radius: 10px;
  padding: 12px;
  box-shadow: -4px 8px 28px rgba(0, 0, 0, 0.12);
  border: 1px solid #ececec;
  text-align: center;
}

.site-floatbar-qr-img {
  width: 140px;
  height: 140px;
  margin: 0 auto 8px;
  object-fit: contain;
}

.site-floatbar-qr-cap {
  font-size: 12px;
  color: var(--text-mid);
}

.site-floatbar-empty {
  font-size: 12px;
  color: var(--text-mid);
  line-height: 1.5;
  margin-bottom: 10px;
  text-align: left;
}

.site-floatbar-empty-link {
  font-size: 12px;
  color: var(--blue-primary);
  text-decoration: underline;
}

.site-floatbar-empty-link:hover {
  color: var(--blue-dark);
}

.site-floatbar-cs:hover .site-floatbar-pop,
.site-floatbar-cs:focus-within .site-floatbar-pop {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

@media (hover: none) {
  .site-floatbar-cs:active .site-floatbar-pop {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
}

@media (max-width: 767px) {
  .site-floatbar {
    top: auto;
    bottom: 96px;
    transform: none;
  }
}

/* ============================================================
   RESPONSIVE — Large desktop (1200px – 1399px)
   ============================================================ */
@media (max-width: 1399px) {
  .about-grid {
    grid-template-columns: 1fr 1fr;
    gap: 56px;
  }

  .about-img {
    height: 420px;
  }
}

/* ============================================================
   RESPONSIVE — Tablet  (768px – 1199px)
   ============================================================ */
@media (max-width: 1199px) {
  :root {
    --container-pad: 60px;
  }

  .header-inner {
    padding: 0 60px;
  }

  .hero-content {
    padding: 0 60px;
  }

  .hero-indicators {
    left: 60px;
  }

  .hero-title {
    font-size: 52px;
  }

  .hero-en {
    font-size: 28px;
  }

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

  .about-img {
    height: 360px;
  }

  .stats-grid {
    flex-wrap: wrap;
    gap: 32px;
  }

  .stat-item {
    flex: 1 1 calc(33.333% - 16px);
    min-width: 140px;
  }

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

  .global-map {
    justify-content: center;
  }

  .global-map img {
    max-width: 90%;
  }

  .solutions-tabs {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .contact-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .contact-items {
    width: 100%;
    gap: 24px;
  }

  .footer-main {
    flex-direction: column;
  }

  .footer-nav {
    justify-content: flex-start;
    gap: 30px;
  }
}

/* ============================================================
   RESPONSIVE — Mobile  (< 768px)
   ============================================================ */
@media (max-width: 767px) {
  :root {
    --container-pad: 18px;
  }

  /* ---------- HEADER ---------- */
  .header {
    background: linear-gradient(180deg, rgba(0,0,0,.55) 0%, transparent 100%);
  }

  .header.scrolled {
    background: rgba(255, 255, 255, 0.97);
    box-shadow: 0 1px 12px rgba(0,0,0,.1);
  }

  .header.scrolled .hamburger span {
    background: #333;
  }

  .header-inner {
    padding: 0 20px;
    height: 60px;
  }

  .logo {
    margin-right: 0;
    flex: 1;
  }

  .logo img {
    height: 36px;
  }

  /* 移动端隐藏语言切换和搜索按钮 */
  .header-right {
    display: none;
  }

  .hamburger {
    display: flex;
    margin-left: 12px;
  }

  .nav {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: rgba(0, 28, 56, 0.98);
    backdrop-filter: blur(10px);
    flex-direction: column;
    align-items: stretch;
    padding: 8px 0 24px;
    gap: 0;
    transform: translateY(-150%);
    transition: transform .35s cubic-bezier(.4,0,.2,1);
    z-index: 999;
    box-shadow: 0 8px 24px rgba(0,0,0,.3);
  }

  .nav.open {
    transform: translateY(0);
  }

  .nav-item {
    padding: 14px 24px;
    font-size: 15px;
    width: 100%;
    border-bottom: 1px solid rgba(255,255,255,.08);
    display: block;
  }

  .nav-item:last-child {
    border-bottom: none;
  }

  .nav-item.active::after {
    display: none;
  }

  .nav-sep {
    display: none;
  }

  .nav-slot.nav-has-sub {
    flex-direction: column;
    align-items: stretch;
    border-bottom: 1px solid rgba(255, 255, 255, .08);
  }

  .nav-has-sub > .nav-dropdown {
    width: 100%;
  }

  .nav-submenu {
    position: static;
    left: auto;
    top: auto;
    transform: none;
    opacity: 1;
    visibility: visible;
    min-width: 0;
    width: 100%;
    border-radius: 0;
    box-shadow: none;
    padding: 0;
    margin: 0;
    background: rgba(0, 0, 0, .22);
    display: flex;
    flex-direction: column;
  }

  .nav-submenu::before {
    display: none;
  }

  .nav-sub-link {
    padding: 10px 24px 10px 40px;
    font-size: 14px;
    border-top: 1px solid rgba(255, 255, 255, .06);
  }

  .hamburger.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .hamburger.open span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
  }

  .hamburger.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  /* ---------- HERO ---------- */
  .hero {
    height: 100svh;
    max-height: 700px;
    min-height: 520px;
    align-items: flex-start;
  }

  .hero-content {
    margin-top: 0;
    padding: 0 20px;
    padding-top: 96px;
  }

  .hero-title {
    font-size: 28px;
    white-space: normal;
    line-height: 1.35;
  }

  /* 移动端隐藏英文副标题（7%透明度，且换行难看） */
  .hero-en {
    display: none;
  }

  .hero-sub {
    font-size: 13px;
    margin-top: 14px;
    line-height: 26px;
  }

  .hero-indicators {
    left: 20px;
    bottom: 24px;
    font-size: 14px;
  }

  /* ---------- ABOUT ---------- */
  .about {
    padding: 48px 0;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .about-img {
    height: 240px;
    border-radius: 32px 0 0 0;
  }

  .about-badge {
    display: none;
  }

  .section-title-blue {
    font-size: 24px;
  }

  .section-title-en,
  .section-title-en-grey,
  .section-title-en-light {
    font-size: 16px;
  }

  .about-text {
    font-size: 13px;
    line-height: 26px;
    margin-top: 16px;
    white-space: pre-line;
  }

  .about-content .btn-orange {
    margin-top: 24px;
  }

  /* ---------- STATS ---------- */
  .stats {
    padding: 36px 0;
  }

  .stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px 16px;
  }

  .stat-item {
    align-items: center;
    text-align: center;
  }

  .stat-item:last-child {
    grid-column: 1 / -1;
    align-items: center;
  }

  .stat-num {
    font-size: 38px;
    line-height: 1;
  }

  .stat-label {
    font-size: 12px;
    white-space: normal;
    margin-top: 8px;
    line-height: 1.5;
  }

  /* ---------- GLOBAL ---------- */
  .global {
    padding: 48px 0;
  }

  /* 移动端加白色遮罩确保文字可读 */
  .global-bg {
    opacity: .35;
  }

  .global-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .global-left {
    max-width: 100%;
  }

  .global-desc {
    font-size: 16px;
    margin-top: 16px;
    line-height: 1.6;
  }

  .global-stat-item {
    margin-top: 20px;
    padding: 16px;
    background: rgba(255,255,255,.8);
    border-radius: 10px;
  }

  .global-num {
    font-size: 22px;
  }

  .global-unit {
    font-size: 14px;
  }

  .global-stat-desc {
    font-size: 12px;
    line-height: 22px;
    color: var(--text-mid);
  }

  .global-map {
    justify-content: center;
  }

  .global-map img {
    max-width: 100%;
    border-radius: 8px;
  }

  /* ---------- SOLUTIONS ---------- */
  /* 移动端用均匀半透明覆盖，不再做单边渐变 */
  .solutions-overlay {
    background: rgba(3, 78, 134, 0.78);
  }

  .solutions-body {
    padding: 44px 0 32px;
  }

  .section-title-white {
    font-size: 24px;
  }

  .solutions-active-title {
    font-size: 22px;
    margin-bottom: 12px;
  }

  .solutions-active-desc {
    font-size: 13px;
    line-height: 26px;
    margin-bottom: 20px;
  }

  /* tabs: 3列×2行，左对齐 */
  .solutions-tabs {
    grid-template-columns: repeat(3, 1fr);
  }

  .solutions-tab {
    padding: 14px 8px;
    border-left: none;
    border-right: none;
  }

  .solutions-tab.active {
    background: rgba(0, 145, 192, 0.9);
  }

  .tab-icon {
    width: 28px;
    height: 28px;
    margin-bottom: 8px;
  }

  .tab-title {
    font-size: 12px;
    line-height: 1.3;
  }

  .tab-sub {
    display: none;
  }

  /* ---------- CASES ---------- */
  .cases {
    padding: 48px 0;
  }

  .cases-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 20px;
  }

  .cases-filter {
    display: flex;
    gap: 0;
    overflow-x: auto;
    padding-bottom: 2px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    width: 100%;
  }

  .cases-filter::-webkit-scrollbar {
    display: none;
  }

  .filter-btn {
    font-size: 13px;
    flex-shrink: 0;
    padding: 8px 16px 8px 0;
    min-height: 36px;
  }

  .cases-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  /* 移动端取消 featured 特殊大小 */
  .case-card.featured {
    grid-column: auto;
    grid-row: auto;
  }

  .case-img {
    height: 150px;
  }

  .case-info {
    padding: 12px;
  }

  .case-info h4 {
    font-size: 13px;
    line-height: 1.5;
  }

  /* ---------- CTA ---------- */
  .cta {
    min-height: auto;
  }

  .cta .container {
    padding-top: 48px;
    padding-bottom: 48px;
  }

  .cta-title {
    font-size: 22px;
    line-height: 1.4;
  }

  .cta-desc {
    font-size: 13px;
    line-height: 22px;
    margin-bottom: 24px;
  }

  .cta-eyebrow {
    font-size: 12px;
    margin-bottom: 10px;
    letter-spacing: .06em;
  }

  /* 卡片：顶部 icon+文字一行，按钮单独一行 */
  .cta-card {
    width: 100%;
    flex-direction: column;
    gap: 16px;
    padding: 20px;
    border-radius: 12px;
  }

  .cta-card-top {
    display: flex;
    align-items: center;
    gap: 12px;
  }

  .cta-card-icon-wrap {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
  }

  .cta-card-text h4 {
    font-size: 15px;
    margin-bottom: 4px;
  }

  .cta-card-text p {
    font-size: 12px;
    line-height: 1.6;
  }

  .cta-card .btn-orange {
    width: 100%;
    justify-content: center;
  }

  .br-pc {
    display: none;
  }

  /* ---------- CONTACT ---------- */
  .contact {
    padding: 40px 0;
  }

  .contact-inner {
    flex-direction: column;
    gap: 24px;
  }

  .contact-titles {
    min-width: unset;
  }

  .contact-items {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px 16px;
    width: 100%;
  }

  .contact-item {
    align-items: flex-start;
    gap: 10px;
    padding: 14px;
    background: #f8fbff;
    border-radius: 10px;
  }

  .contact-icon-wrap {
    width: 34px;
    height: 34px;
    flex-shrink: 0;
  }

  .c-label {
    font-size: 11px;
    letter-spacing: .02em;
  }

  .c-value {
    font-size: 13px;
    white-space: normal;
    word-break: break-all;
  }

  /* ---------- FOOTER ---------- */
  .footer {
    padding-bottom: calc(24px + env(safe-area-inset-bottom, 0px));
  }

  .footer-divider-top {
    margin-bottom: 28px;
  }

  .footer-main {
    flex-direction: column;
    gap: 28px;
    padding-bottom: 32px;
  }

  .footer-logo img {
    height: 40px;
  }

  .footer-brand {
    gap: 16px;
  }

  .social-link {
    width: 36px;
    height: 36px;
  }

  .footer-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px 20px;
    justify-content: start;
    width: 100%;
  }

  .footer-col-contact {
    grid-column: 1 / -1;
    min-width: unset;
  }

  .footer-col h5 {
    font-size: 14px;
    margin-bottom: 12px;
  }

  .footer-col ul li a {
    font-size: 13px;
    line-height: 32px;
    min-height: 32px;
    display: block;
  }

  .footer-bottom p {
    font-size: 12px;
    text-align: center;
  }

  .footer-divider-bottom {
    margin-bottom: 16px;
  }

}

/* ============================================================
   MOBILE — very small  (< 480px)
   ============================================================ */
@media (max-width: 479px) {
  :root {
    --container-pad: 16px;
  }

  /* Hero */
  .hero-title {
    font-size: 24px;
    letter-spacing: .04em;
  }

  .hero-sub {
    font-size: 12px;
    line-height: 22px;
  }

  /* About */
  .about-img {
    height: 200px;
    border-radius: 20px 0 0 0;
  }

  .about-text {
    font-size: 13px;
    line-height: 24px;
    margin-top: 12px;
    white-space: pre-line;
  }

  /* Stats */
  .stat-num {
    font-size: 32px;
  }

  /* Solutions tabs — 超小屏改为 2 列 */
  .solutions-tabs {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Cases */
  .cases-grid {
    grid-template-columns: 1fr;
  }

  .case-img {
    height: 190px;
  }

  /* CTA */
  .cta-title {
    font-size: 20px;
  }

  /* Contact */
  .contact-items {
    grid-template-columns: 1fr;
  }

  .contact-item {
    flex-direction: row;
    align-items: center;
  }

  /* Footer */
  .footer-nav {
    grid-template-columns: 1fr 1fr;
    gap: 20px 16px;
  }
}

/* ============================================================
   ANIMATIONS / MISC
   ============================================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero-content .hero-title,
.hero-content .hero-en,
.hero-content .hero-sub {
  animation: fadeInUp .7s ease both;
}

.hero-content .hero-title { animation-delay: .2s; }
.hero-content .hero-en    { animation-delay: .35s; }
.hero-content .hero-sub   { animation-delay: .5s; }