/* 新版官网设计令牌取自品牌 PPT 的深蓝、暖金和工程白，并保留翔和蓝绿色标识。 */
@font-face {
  font-family: XH-Sans;
  src: url('../fonts/UcCo3FwrK3iLTcviYwY.woff2') format('woff2');
  font-display: swap;
}

:root {
  --navy: #061b3a;
  --navy-soft: #0c315e;
  --gold: #d09224;
  --gold-light: #f2bf58;
  --ink: #0b2f61;
  --body: #596a80;
  --line: #d7e0e8;
  --white: #ffffff;
  --surface: #f7f9fb;
  --container: min(1280px, calc(100vw - 96px));
  --header: 88px;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

/* 基础重置统一浏览器盒模型、字体、媒体和交互元素表现。 */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: XH-Sans, 'Noto Sans SC', 'Microsoft YaHei', Arial, sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

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

button {
  border: 0;
  font: inherit;
  cursor: pointer;
}

.v2-container {
  width: var(--container);
  margin-inline: auto;
}

.v2-section {
  padding: 118px 0;
}

.v2-blueprint {
  background-color: var(--white);
  background-image: url('../images/ppt-blueprint-light.png');
  background-position: center top;
  background-size: cover;
}

.v2-section-tag {
  display: block;
  margin-bottom: 18px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .18em;
}

.v2-reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .75s var(--ease), transform .75s var(--ease);
}

.v2-reveal.visible {
  opacity: 1;
  transform: none;
}

/* 页头采用安静白底和单一主按钮，匹配设计稿的克制导航。 */
.v2-header {
  position: fixed;
  z-index: 50;
  inset: 0 0 auto;
  height: var(--header);
  display: flex;
  align-items: center;
  gap: 30px;
  padding: 0 48px;
  background: rgba(255, 255, 255, .98);
  border-bottom: 1px solid rgba(11, 47, 97, .1);
  transition: box-shadow .25s var(--ease);
}

.v2-header.scrolled {
  box-shadow: 0 12px 38px rgba(6, 27, 58, .1);
}

.v2-brand {
  display: flex;
  align-items: center;
  gap: 11px;
  min-width: 218px;
}

.v2-brand img {
  width: 54px;
  height: 54px;
  object-fit: contain;
}

.v2-brand span {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.v2-brand strong {
  color: #0754a6;
  font-size: 27px;
  letter-spacing: .12em;
}

.v2-brand small {
  margin-top: 6px;
  color: #6e7b89;
  font-size: 7px;
  letter-spacing: .12em;
}

.v2-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  margin-left: auto;
}

.v2-nav a {
  position: relative;
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
}

.v2-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -14px;
  height: 2px;
  background: var(--gold);
  transition: right .25s var(--ease);
}

.v2-nav a:hover::after {
  right: 0;
}

.v2-actions,
.v2-language {
  display: flex;
  align-items: center;
}

.v2-actions {
  gap: 22px;
}

.v2-language {
  gap: 6px;
  color: #8b96a3;
  font-size: 13px;
}

.v2-language button {
  padding: 4px;
  background: transparent;
  color: inherit;
}

.v2-language button.active {
  color: var(--ink);
  font-weight: 800;
}

.v2-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  min-height: 48px;
  padding: 12px 25px;
  font-size: 14px;
  font-weight: 800;
  transition: transform .2s var(--ease), background .2s var(--ease);
}

.v2-button:hover {
  transform: translateY(-2px);
}

.v2-button-dark {
  background: var(--navy);
  color: var(--white);
}

.v2-button-gold {
  background: var(--gold);
  color: var(--white);
}

.v2-button-gold:hover {
  background: #b97b14;
}

.v2-button svg {
  width: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
}

.v2-menu,
.v2-mobile-nav {
  display: none;
}

/* 首屏以真实冷库照片为主体，深蓝遮罩和金色光轨保证文字可读性。 */
.v2-hero {
  position: relative;
  min-height: 910px;
  padding-top: var(--header);
  overflow: hidden;
  background: var(--navy);
  color: var(--white);
}

.v2-hero-media,
.v2-hero-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.v2-hero-media {
  object-fit: cover;
}

.v2-hero-shade {
  background: linear-gradient(90deg, rgba(4, 21, 47, .96) 0, rgba(4, 25, 54, .72) 42%, rgba(4, 25, 54, .08) 78%);
}

.v2-hero::after {
  content: '';
  position: absolute;
  z-index: 2;
  left: -8vw;
  right: -5vw;
  bottom: 118px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), var(--gold-light), transparent);
  transform: rotate(-7deg);
  box-shadow: 0 0 18px rgba(242, 191, 88, .65);
}

.v2-hero-copy {
  position: relative;
  z-index: 3;
  padding-top: 175px;
}

.v2-hero-copy h1 {
  max-width: 1080px;
  margin: 0 0 26px;
  font-size: clamp(54px, 5.1vw, 78px);
  line-height: 1.16;
  letter-spacing: -.045em;
}

.v2-hero-copy p {
  margin: 0 0 38px;
  color: rgba(255, 255, 255, .8);
  font-size: clamp(22px, 2vw, 30px);
}

.v2-metrics {
  position: absolute;
  z-index: 4;
  left: 50%;
  bottom: 0;
  width: min(1380px, calc(100vw - 68px));
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  transform: translateX(-50%);
  background: rgba(6, 27, 58, .95);
  border-top: 1px solid rgba(208, 146, 36, .55);
}

.v2-metrics div {
  padding: 29px 42px;
  border-right: 1px solid rgba(255, 255, 255, .2);
}

.v2-metrics div:last-child {
  border-right: 0;
}

.v2-metrics strong {
  display: block;
  color: var(--gold-light);
  font-size: 38px;
  line-height: 1;
}

.v2-metrics sup {
  font-size: 16px;
}

.v2-metrics span {
  display: block;
  margin-top: 12px;
  color: rgba(255, 255, 255, .72);
  font-size: 12px;
}

/* 企业介绍使用深色开放布局和五项能力分隔线，延续 PPT 公司页层次。 */
.v2-about {
  color: var(--white);
  background-color: var(--navy);
  background-image: url('../images/ppt-dark-architecture.png');
  background-position: center;
  background-size: cover;
}

.v2-about-grid {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: 110px;
}

.v2-about h2,
.v2-heading h2,
.v2-patent-grid h2 {
  margin: 0;
  font-size: clamp(40px, 4vw, 60px);
  line-height: 1.2;
  letter-spacing: -.04em;
}

.v2-lead {
  margin: 0 0 24px;
  font-size: clamp(22px, 2vw, 30px);
  line-height: 1.6;
}

.v2-about-grid > div:last-child > p:not(.v2-lead) {
  color: rgba(255, 255, 255, .62);
}

.v2-values {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  margin-top: 62px;
  border-top: 1px solid rgba(255, 255, 255, .2);
}

.v2-values span {
  padding: 22px 15px 0 0;
  border-right: 1px solid rgba(255, 255, 255, .15);
}

.v2-values b,
.v2-values strong {
  display: block;
}

.v2-values b {
  color: var(--gold);
  font-size: 11px;
}

.v2-values strong {
  margin-top: 8px;
  font-size: 13px;
}

/* 通用标题采用左侧主张与右侧说明的演示文稿式双栏结构。 */
.v2-heading {
  display: grid;
  grid-template-columns: 1.25fr .75fr;
  gap: 80px;
  align-items: end;
  margin-bottom: 65px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.v2-heading > p {
  margin: 0 0 7px;
  color: var(--body);
  font-size: 14px;
}

.v2-heading.compact {
  margin-bottom: 50px;
}

.v2-heading.light,
.v2-heading.light > p {
  color: var(--white);
}

.v2-heading.light {
  border-color: rgba(255, 255, 255, .18);
}

.v2-heading.light > p {
  color: rgba(255, 255, 255, .62);
}

/* EPC+O+F 使用三圆关系和底部深蓝收束条，保持 PPT 原始结构。 */
.v2-model-row {
  display: grid;
  grid-template-columns: 1fr 70px 1fr 70px 1fr;
  align-items: center;
  max-width: 1160px;
  margin: 0 auto;
}

.v2-model-row article {
  text-align: center;
}

.v2-model-row > i {
  color: var(--gold);
  font-size: 38px;
  font-style: normal;
  text-align: center;
}

.v2-model-circle {
  width: 280px;
  height: 280px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
  border: 1.5px solid var(--ink);
  border-radius: 50%;
  background: rgba(255, 255, 255, .76);
}

.v2-model-row .accent .v2-model-circle {
  border-color: var(--gold);
}

.v2-model-circle strong {
  color: var(--ink);
  font-size: 48px;
  line-height: 1;
}

.v2-model-row .accent .v2-model-circle strong {
  color: var(--gold);
}

.v2-model-circle h3 {
  margin: 23px 0 12px;
  font-size: 22px;
}

.v2-model-circle p {
  margin: 0;
  color: var(--body);
  font-size: 12px;
}

.v2-model-row h4 {
  margin: 27px 0 0;
  color: var(--ink);
  font-size: 17px;
}

.v2-closure {
  margin-top: 60px;
  padding: 22px;
  color: var(--white);
  background: var(--navy);
  text-align: center;
  font-weight: 800;
  letter-spacing: .08em;
}

/* 五层平台以横向开放轨道表达由基础设施到价值层的递进关系。 */
.v2-platform {
  padding-top: 60px;
}

.v2-layer-stack {
  display: grid;
  gap: 12px;
}

.v2-layer-stack div {
  display: grid;
  grid-template-columns: 190px 1fr;
  align-items: center;
  min-height: 86px;
  background: rgba(255, 255, 255, .86);
  border: 1px solid var(--line);
}

.v2-layer-stack strong {
  align-self: stretch;
  display: grid;
  place-items: center;
  color: var(--white);
  background: var(--ink);
  font-size: 18px;
}

.v2-layer-stack span {
  padding: 20px 42px;
  color: #263b52;
  text-align: center;
}

.v2-layer-stack .value {
  background: rgba(255, 247, 232, .9);
}

/* 运营服务采用六项开放列表和金色指标轨，避免重复卡片堆叠。 */
.v2-operation {
  border-top: 1px solid var(--line);
}

.v2-operation-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0 48px;
}

.v2-operation-list > div {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 18px;
  padding: 25px 0;
  border-top: 1px solid var(--line);
}

.v2-operation-list b {
  color: var(--gold);
  font-size: 30px;
  line-height: 1.2;
}

.v2-operation-list span,
.v2-operation-list strong,
.v2-operation-list small {
  display: block;
}

.v2-operation-list strong {
  font-size: 18px;
}

.v2-operation-list small {
  margin-top: 7px;
  color: var(--body);
  font-size: 12px;
}

.v2-gold-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 45px;
  padding: 32px 0;
  border-top: 1px solid rgba(208, 146, 36, .45);
  border-bottom: 1px solid rgba(208, 146, 36, .45);
}

.v2-gold-metrics span {
  text-align: center;
  border-right: 1px solid var(--line);
}

.v2-gold-metrics span:last-child {
  border-right: 0;
}

.v2-gold-metrics strong,
.v2-gold-metrics small {
  display: block;
}

.v2-gold-metrics strong {
  color: var(--gold);
  font-size: 31px;
}

.v2-gold-metrics small {
  color: var(--body);
}

/* 金融模块使用 PPT 深蓝背景和六步金色连接线表达全周期支持。 */
.v2-finance {
  color: var(--white);
  background-color: var(--navy);
  background-image: url('../images/ppt-dark-architecture.png');
  background-position: center;
  background-size: cover;
}

.v2-process {
  position: relative;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
}

.v2-process::before {
  content: '';
  position: absolute;
  left: 7%;
  right: 7%;
  top: 35px;
  height: 2px;
  background: var(--gold);
}

.v2-process div {
  position: relative;
  z-index: 1;
  text-align: center;
}

.v2-process b {
  width: 70px;
  height: 70px;
  display: grid;
  place-items: center;
  margin: 0 auto 22px;
  border-radius: 50%;
  color: var(--white);
  background: var(--navy-soft);
  border: 1px solid var(--gold);
}

.v2-process strong {
  font-size: 14px;
}

.v2-finance-tools {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 35px;
  margin-top: 60px;
  padding: 24px;
  border-top: 1px solid rgba(255, 255, 255, .18);
  border-bottom: 1px solid rgba(255, 255, 255, .18);
  color: rgba(255, 255, 255, .72);
}

.v2-finance-tools strong {
  color: var(--gold-light);
}

.v2-finance-tools i {
  color: var(--gold);
  font-style: normal;
}

/* 技术区以真实自动化冷库照片为主体，使用三项开放能力说明。 */
.v2-technology {
  position: relative;
  min-height: 720px;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: var(--white);
  background: var(--navy);
}

.v2-technology > img,
.v2-tech-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.v2-technology > img {
  object-fit: cover;
}

.v2-tech-shade {
  background: linear-gradient(90deg, rgba(3, 22, 48, .98), rgba(3, 26, 57, .75) 48%, rgba(3, 26, 57, .08));
}

.v2-tech-content {
  position: relative;
  z-index: 2;
}

.v2-tech-content h2 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(42px, 4.2vw, 64px);
  line-height: 1.25;
}

.v2-tech-content > p {
  max-width: 600px;
  color: rgba(255, 255, 255, .7);
}

.v2-tech-points {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  max-width: 850px;
  margin-top: 55px;
  border-top: 1px solid rgba(255, 255, 255, .25);
}

.v2-tech-points article {
  padding: 26px 27px 0 0;
  border-right: 1px solid rgba(255, 255, 255, .18);
}

.v2-tech-points article + article {
  padding-left: 27px;
}

.v2-tech-points b {
  color: var(--gold);
  font-size: 11px;
}

.v2-tech-points h3 {
  margin: 8px 0;
  font-size: 18px;
}

.v2-tech-points p {
  color: rgba(255, 255, 255, .58);
  font-size: 12px;
}

/* 视频区使用原生播放器并保持稳定的 16:9 工程媒体框。 */
.v2-media {
  background: var(--surface);
}

.v2-video-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}

.v2-video-grid article {
  background: var(--white);
  border-bottom: 3px solid var(--gold);
}

.v2-video-grid video {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: var(--navy);
}

.v2-video-grid h3 {
  margin: 0;
  padding: 22px 25px;
  font-size: 17px;
}

/* 标杆案例以左侧数据和右侧大图形成 PPT 式不对称布局。 */
.v2-flagship-grid {
  display: grid;
  grid-template-columns: .95fr 1.05fr;
  gap: 70px;
  align-items: center;
}

.v2-flagship h2 {
  margin: 0;
  font-size: clamp(44px, 4.5vw, 66px);
  line-height: 1.2;
}

.v2-flagship p {
  color: var(--body);
}

.v2-case-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 45px 0 35px;
  border-top: 1px solid var(--line);
}

.v2-case-metrics span {
  padding: 24px 12px 0 0;
  border-right: 1px solid var(--line);
}

.v2-case-metrics strong,
.v2-case-metrics small {
  display: block;
}

.v2-case-metrics strong {
  color: var(--gold);
  font-size: 21px;
  white-space: nowrap;
}

.v2-case-metrics small {
  margin-top: 8px;
  color: var(--body);
  font-size: 10px;
}

.v2-flagship-media {
  position: relative;
}

.v2-flagship-media::before {
  content: '';
  position: absolute;
  inset: -18px 18px 18px -18px;
  border: 1px solid var(--gold);
}

.v2-flagship-media img {
  position: relative;
  width: 100%;
  height: 520px;
  object-fit: cover;
}

.v2-text-link {
  display: inline-block;
  padding-bottom: 5px;
  border-bottom: 1px solid var(--gold);
  color: var(--ink);
  font-size: 13px;
  font-weight: 800;
}

.v2-case-filter {
  display: flex;
  gap: 8px;
  margin: 90px 0 28px;
}

.v2-case-filter button {
  padding: 9px 17px;
  color: var(--body);
  background: transparent;
  border: 1px solid var(--line);
  font-size: 12px;
}

.v2-case-filter button.active,
.v2-case-filter button:hover {
  color: var(--white);
  background: var(--ink);
  border-color: var(--ink);
}

.v2-case-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
}

.v2-case-card {
  position: relative;
  min-height: 330px;
  overflow: hidden;
  color: var(--white);
  background: var(--navy);
}

.v2-case-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .55s var(--ease);
}

.v2-case-card:hover img {
  transform: scale(1.045);
}

.v2-case-card::after {
  content: '';
  position: absolute;
  inset: 35% 0 0;
  background: linear-gradient(transparent, rgba(4, 21, 47, .95));
}

.v2-case-card div {
  position: absolute;
  z-index: 2;
  inset: auto 22px 20px;
}

.v2-case-card small {
  color: var(--gold-light);
}

.v2-case-card h3 {
  margin: 7px 0;
  font-size: 17px;
  line-height: 1.45;
}

.v2-case-card p {
  margin: 0;
  color: rgba(255, 255, 255, .65);
  font-size: 11px;
}

/* 专利区用证书实物和开放条目建立技术可信度。 */
.v2-patents {
  background: var(--surface);
}

.v2-patent-grid {
  display: grid;
  grid-template-columns: .65fr 1.35fr;
  gap: 100px;
  align-items: center;
}

.v2-patent-grid > img {
  max-height: 520px;
  margin: 0 auto;
  box-shadow: 0 20px 50px rgba(6, 27, 58, .14);
}

.v2-patent-grid ul {
  margin: 40px 0 0;
  padding: 0;
  list-style: none;
}

.v2-patent-grid li {
  padding: 17px 0;
  border-top: 1px solid var(--line);
  color: var(--body);
  font-size: 13px;
}

.v2-patent-grid li strong {
  display: block;
  color: var(--ink);
  font-size: 15px;
}

/* 合作路径通过六个圆形节点和金色连线表达长期项目陪伴。 */
.v2-cooperation-path {
  position: relative;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
}

.v2-cooperation-path::before {
  content: '';
  position: absolute;
  left: 7%;
  right: 7%;
  top: 35px;
  height: 2px;
  background: var(--gold);
}

.v2-cooperation-path span {
  position: relative;
  z-index: 1;
  text-align: center;
}

.v2-cooperation-path b {
  width: 70px;
  height: 70px;
  display: grid;
  place-items: center;
  margin: 0 auto 20px;
  border-radius: 50%;
  color: var(--white);
  background: var(--ink);
}

.v2-cooperation-path strong {
  font-size: 14px;
}

/* 伙伴 Logo 始终使用原始彩色素材并保持无卡片开放排列。 */
.v2-partner-title {
  padding-left: 18px;
  border-left: 4px solid var(--gold);
}

.v2-partner-title h2 {
  margin: 0;
  font-size: 28px;
}

.v2-partner-title.supplier {
  margin-top: 62px;
}

.v2-logo-rail {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  margin-top: 25px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.v2-logo-rail.supplier {
  grid-template-columns: repeat(5, 1fr);
}

.v2-logo-rail img {
  width: 100%;
  height: 100px;
  padding: 18px;
  object-fit: contain;
  filter: none;
  opacity: 1;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

/* 新闻区使用横向编辑式图文条，避免通用卡片墙视觉。 */
.v2-news {
  background: var(--surface);
}

.v2-news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.v2-news-card {
  background: var(--white);
  border-bottom: 2px solid transparent;
  transition: transform .25s var(--ease), border-color .25s var(--ease);
}

.v2-news-card:hover {
  transform: translateY(-5px);
  border-color: var(--gold);
}

.v2-news-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.v2-news-card div {
  padding: 22px;
}

.v2-news-card time {
  color: var(--gold);
  font-size: 11px;
}

.v2-news-card h3 {
  margin: 8px 0 0;
  font-size: 17px;
  line-height: 1.5;
}

/* 品牌收束区使用 PPT 深蓝背景、金色光轨和用户指定 Logo。 */
.v2-contact {
  position: relative;
  min-height: 590px;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: var(--white);
  background: var(--navy);
}

.v2-contact-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.v2-contact-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: .75fr 1.25fr;
  align-items: center;
}

.v2-contact-grid > div:first-child img {
  width: 210px;
}

.v2-contact h2 {
  margin: 0;
  font-size: clamp(42px, 4.5vw, 66px);
  line-height: 1.35;
}

.v2-contact h2 em {
  color: var(--gold-light);
  font-style: normal;
}

.v2-contact p {
  color: rgba(255, 255, 255, .62);
}

.v2-contact-action {
  display: flex;
  align-items: center;
  gap: 45px;
  margin-top: 35px;
}

.v2-contact-action > a:first-child {
  font-size: 28px;
  font-weight: 800;
}

/* 页脚以更深蓝色提供导航与版权信息，延续品牌收束。 */
.v2-footer {
  padding: 68px 0 25px;
  color: var(--white);
  background: #03142c;
}

.v2-footer-grid {
  display: grid;
  grid-template-columns: 1.5fr .7fr 1fr;
  gap: 70px;
}

.v2-footer-grid > div {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 9px;
}

.v2-brand.light strong {
  color: var(--white);
}

.v2-brand.light small,
.v2-footer p,
.v2-footer a,
.v2-footer span {
  color: rgba(255, 255, 255, .55);
  font-size: 12px;
}

.v2-footer a:hover {
  color: var(--gold-light);
}

.v2-copyright {
  display: flex;
  justify-content: space-between;
  margin-top: 52px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, .12);
}

.v2-copyright span {
  font-size: 10px;
}

/* 平板断点隐藏桌面导航，并收紧多列布局的间距。 */
@media (max-width: 1120px) {
  :root {
    --container: min(calc(100vw - 56px), 1040px);
  }

  .v2-header {
    padding: 0 28px;
  }

  .v2-nav {
    display: none;
  }

  .v2-actions {
    margin-left: auto;
  }

  .v2-menu {
    width: 42px;
    height: 42px;
    display: block;
    padding: 7px;
    background: transparent;
  }

  .v2-menu span {
    display: block;
    height: 2px;
    margin: 6px 0;
    background: var(--navy);
  }

  .v2-mobile-nav {
    position: fixed;
    z-index: 49;
    inset: var(--header) 0 auto;
    display: flex;
    flex-direction: column;
    padding: 20px 28px 30px;
    background: var(--white);
    box-shadow: 0 20px 35px rgba(6, 27, 58, .12);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: .35s var(--ease);
  }

  .v2-mobile-nav.open {
    transform: none;
    opacity: 1;
    pointer-events: auto;
  }

  .v2-mobile-nav a {
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
    font-weight: 700;
  }

  .v2-case-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .v2-logo-rail {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* 手机断点把页面改为单列阅读，并确保所有流程和媒体无横向溢出。 */
@media (max-width: 720px) {
  :root {
    --container: calc(100vw - 36px);
    --header: 72px;
  }

  .v2-section {
    padding: 78px 0;
  }

  .v2-header {
    padding: 0 18px;
  }

  .v2-brand {
    min-width: 0;
    gap: 8px;
  }

  .v2-brand img {
    width: 43px;
    height: 43px;
  }

  .v2-brand strong {
    font-size: 22px;
  }

  .v2-brand small {
    font-size: 5px;
  }

  .v2-button-dark {
    display: none;
  }

  .v2-actions {
    gap: 10px;
  }

  .v2-hero {
    min-height: 760px;
  }

  .v2-hero-shade {
    background: linear-gradient(90deg, rgba(4, 21, 47, .95), rgba(4, 25, 54, .45));
  }

  .v2-hero-copy {
    padding-top: 150px;
  }

  .v2-hero-copy h1 {
    font-size: 40px;
  }

  .v2-hero-copy p {
    font-size: 19px;
  }

  .v2-metrics {
    width: 100%;
    grid-template-columns: repeat(2, 1fr);
  }

  .v2-metrics div {
    padding: 18px;
  }

  .v2-metrics strong {
    font-size: 25px;
  }

  .v2-metrics span {
    font-size: 9px;
  }

  .v2-about-grid,
  .v2-heading,
  .v2-flagship-grid,
  .v2-patent-grid,
  .v2-contact-grid {
    grid-template-columns: 1fr;
    gap: 45px;
  }

  .v2-values {
    grid-template-columns: 1fr 1fr;
  }

  .v2-model-row {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .v2-model-row > i {
    line-height: 1;
  }

  .v2-model-circle {
    width: 245px;
    height: 245px;
  }

  .v2-layer-stack div {
    grid-template-columns: 105px 1fr;
  }

  .v2-layer-stack span {
    padding: 16px;
    text-align: left;
    font-size: 11px;
  }

  .v2-operation-list,
  .v2-tech-points,
  .v2-video-grid,
  .v2-news-grid {
    grid-template-columns: 1fr;
  }

  .v2-gold-metrics,
  .v2-case-metrics {
    grid-template-columns: repeat(2, 1fr);
  }

  .v2-gold-metrics span,
  .v2-case-metrics span {
    padding: 18px 8px;
    border-bottom: 1px solid var(--line);
  }

  .v2-process,
  .v2-cooperation-path {
    grid-template-columns: repeat(2, 1fr);
    gap: 30px 15px;
  }

  .v2-process::before,
  .v2-cooperation-path::before {
    display: none;
  }

  .v2-finance-tools {
    flex-wrap: wrap;
    gap: 12px 20px;
  }

  .v2-technology {
    min-height: 850px;
  }

  .v2-tech-content h2 {
    font-size: 39px;
  }

  .v2-tech-points article,
  .v2-tech-points article + article {
    padding: 22px 0;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, .18);
  }

  .v2-flagship-media img {
    height: 310px;
  }

  .v2-case-grid {
    grid-template-columns: 1fr;
  }

  .v2-case-filter {
    overflow-x: auto;
    white-space: nowrap;
  }

  .v2-logo-rail,
  .v2-logo-rail.supplier {
    grid-template-columns: repeat(2, 1fr);
  }

  .v2-contact-grid > div:first-child img {
    width: 120px;
  }

  .v2-contact h2 {
    font-size: 38px;
  }

  .v2-contact-action {
    align-items: flex-start;
    flex-direction: column;
    gap: 22px;
  }

  .v2-footer-grid {
    grid-template-columns: 1fr;
    gap: 35px;
  }

  .v2-copyright {
    flex-direction: column;
    gap: 10px;
  }
}

/* 减少动态偏好下关闭淡入位移，避免不必要的视觉运动。 */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .v2-reveal,
  .v2-case-card img {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* 首屏轮播：每个数据库轮播项独立定位，切换时只改变透明度。 */
.v2-hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity .8s var(--ease);
}

.v2-hero-slide.active {
  opacity: 1;
  pointer-events: auto;
}

.v2-hero-dots {
  position: absolute;
  z-index: 5;
  left: 50%;
  bottom: 132px;
  display: flex;
  gap: 8px;
  transform: translateX(-50%);
}

.v2-hero-dot {
  width: 26px;
  height: 3px;
  padding: 0;
  border: 0;
  background: rgba(255, 255, 255, .4);
  transition: width .25s var(--ease), background .25s var(--ease);
}

.v2-hero-dot.active {
  width: 48px;
  background: var(--gold);
}

/* 旧版锚点别名，保证后台菜单中的 #company/#innovation/#patent 仍然可用。 */
.anchor-alias {
  position: relative;
  display: block;
  height: 0;
  scroll-margin-top: var(--header);
  visibility: hidden;
}

/* 后台文案长度不可控，简介区只展示两行，保持与设计稿一致的高度。 */
.v2-clamp-2 {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}

/* 品牌名与操作区不参与压缩，后台品牌名较长时也不会把按钮挤成两行。 */
.v2-brand,
.v2-actions {
  flex-shrink: 0;
}

.v2-brand strong,
.v2-actions .v2-button {
  white-space: nowrap;
}

/* 英文导航文案明显更长，中等宽度下收紧间距，避免页头横向溢出。 */
@media (max-width: 1399px) {
  .v2-nav {
    gap: 18px;
  }

  .v2-nav a {
    font-size: 13px;
  }

  .v2-actions .v2-button {
    padding: 12px 18px;
  }
}

/* 供应商区紧接合作伙伴区，避免两个 section 叠加过多留白。 */
.v2-suppliers {
  padding-top: 0;
}

/* 图片文件缺失时由 home-v2.js 打上标记，用品牌色底替代破损图标。 */
img.is-missing {
  background: linear-gradient(135deg, var(--navy), var(--ink));
  object-fit: cover;
}