:root {
  --navy: #20374b;
  --navy-deep: #102438;
  --ink: #202124;
  --body: #55585c;
  --service-surface: #f4f4f4;
  --service-radius: 24px;
  --paper: #ffffff;
  --pale: #f4f6f7;
  --line: #dbe0e4;
  --red: #c51e2f;
  --shadow: 0 10px 30px rgba(16, 36, 56, 0.08);
  --wrap: 1280px;
  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
  --font-body: 17px;
  --font-heading: 36px;
  --font-section-label: 30px;
  --font-section-summary: 22px;
  --section-space: 104px;
  --radius: 2px;
  --nav-font-size: 15px;
  --nav-font-weight: 500;
  --nav-line-height: 1.5;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--paper);
}

/* 保留独立页面和原生导航；不支持视图过渡的浏览器直接正常跳转。 */
@media (prefers-reduced-motion: no-preference) {
  @view-transition {
    navigation: auto;
  }

  body[data-page="china"] .site-header,
  body[data-page="overseas"] .site-header {
    view-transition-name: site-header;
  }

  ::view-transition-group(root),
  ::view-transition-group(site-header) {
    animation-duration: 240ms;
    animation-timing-function: var(--ease);
  }

  /* 旧页面始终垫底，新页面淡入，避免两层同时变透明露出白底。 */
  ::view-transition-old(root),
  ::view-transition-old(site-header) {
    animation: none;
    opacity: 1;
    mix-blend-mode: normal;
  }

  ::view-transition-new(root),
  ::view-transition-new(site-header) {
    animation: region-page-enter 240ms var(--ease) both;
    mix-blend-mode: normal;
  }
}

@keyframes region-page-enter {
  from { opacity: 0; }
  to { opacity: 1; }
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
  font-size: var(--font-body);
  line-height: 1.8;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

button {
  color: inherit;
  font: inherit;
}

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

h1,
h2,
h3,
p {
  margin: 0;
}

p {
  color: var(--body);
  font-size: var(--font-body);
  line-height: 1.8;
}

h2 {
  font-size: var(--font-heading);
  font-weight: 600;
  line-height: 1.45;
  text-wrap: balance;
}

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

a:focus-visible,
button:focus-visible,
summary:focus-visible,
[tabindex="0"]:focus-visible {
  outline: 3px solid var(--red);
  outline-offset: 5px;
}

.wrap {
  width: calc(100% - 144px);
  max-width: var(--wrap);
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 16px;
  z-index: 100;
  padding: 11px 16px;
  background: var(--paper);
  box-shadow: var(--shadow);
  transform: translateY(-160%);
  transition: transform 200ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 80px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.98);
  transition: height 260ms ease, box-shadow 260ms ease;
}

.site-header.is-scrolled {
  height: 70px;
  box-shadow: var(--shadow);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 24px;
}

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

.brand img {
  width: 46px;
  height: 46px;
  object-fit: contain;
}

.brand strong {
  display: block;
  font-size: 22px;
  font-weight: 700;
  line-height: 1.2;
  overflow-wrap: anywhere;
}

.brand small {
  display: block;
  margin-top: 4px;
  color: var(--body);
  font-size: 11px;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 25px;
  margin-left: auto;
  font-size: var(--nav-font-size);
  font-weight: var(--nav-font-weight);
  line-height: var(--nav-line-height);
}

.desktop-nav > a,
.nav-item > a {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  white-space: nowrap;
  transition: color 200ms ease;
}

/* 导航下拉菜单 */
.nav-item {
  position: relative;
}

.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  padding: 8px 0;
  margin-top: 4px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all 0.2s ease;
  z-index: 1000;
}

.nav-item:is(:hover, :focus-within) .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown a {
  display: block;
  padding: 10px 20px;
  font-size: 14px;
  color: var(--ink);
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
  white-space: nowrap;
  position: relative;
}

.nav-dropdown a::after {
  display: none;
}

.nav-dropdown a:hover {
  background: var(--pale);
  color: var(--red);
}

.desktop-nav > a {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  white-space: nowrap;
  transition: color 200ms ease;
}

.desktop-nav a::after,
.language-button::after {
  position: absolute;
  right: 0;
  bottom: 4px;
  left: 0;
  height: 2px;
  background: var(--red);
  content: "";
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 220ms var(--ease);
}

.desktop-nav a:hover,
.desktop-nav a[aria-current],
.language-button:hover,
.language-button.is-active {
  color: var(--red);
}

.desktop-nav a[aria-current]::after,
.language-button.is-active::after {
  transform: scaleX(1);
}

.desktop-nav .nav-contact {
  gap: 6px;
  font-weight: 400;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 18px;
}

.language-switcher {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--ink);
  font-size: var(--nav-font-size);
  font-weight: var(--nav-font-weight);
  line-height: var(--nav-line-height);
  white-space: nowrap;
}

.language-button {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  transition: color 180ms ease;
}

.language-switcher > span {
  color: #73767a;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 11px;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  margin: 5px auto;
  background: var(--navy);
  transition: transform 220ms ease;
}

.menu-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(3.5px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-3.5px) rotate(-45deg);
}

.mobile-menu {
  position: fixed;
  inset: 80px 0 0;
  z-index: 45;
  display: flex;
  flex-direction: column;
  padding: 22px 32px 36px;
  background: var(--paper);
  opacity: 0;
  transform: translateY(-12px);
  transition: opacity 220ms ease, transform 220ms ease;
}

.mobile-menu[hidden] {
  display: none;
}

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

.mobile-menu > a {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 54px;
  border-bottom: 1px solid var(--line);
  font-size: 17px;
  font-weight: var(--nav-font-weight);
  line-height: var(--nav-line-height);
  transition: color 200ms ease;
}

.mobile-menu > a[aria-current] {
  color: var(--red);
  text-decoration-line: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 9px;
}

.mobile-menu > a[href^="tel:"] {
  font-weight: 400;
}

.mobile-menu .language-switcher {
  font-size: 17px;
}

.mobile-language-switcher {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 60px;
  color: var(--body);
  font-size: 13px;
}

.hero {
  position: relative;
  isolation: isolate;
  display: grid;
  place-items: center;
  min-height: clamp(720px, 62vw, 900px);
  color: var(--ink);
  background: #f2f5f7;
  overflow: hidden;
}

/* 使用平面叠层保护文字可读性；首屏的缩放与扫光动效仍由下方规则控制。 */
.hero::after {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: rgba(255, 255, 255, .58);
  content: "";
  pointer-events: none;
}

.hero-content.wrap {
  position: relative;
  z-index: 2;
  display: flex;
  width: calc(100% - 144px);
  max-width: var(--wrap);
  min-width: 0;
  margin-inline: auto;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 68px 0 76px;
  text-align: center;
}

.hero h1 {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  max-width: min(100%, 1000px);
  margin: 0;
  color: var(--ink);
  font-size: clamp(38px, 4.6vw, 62px);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 0;
  white-space: normal;
  text-wrap: balance;
}

.hero-slogan span {
  white-space: nowrap;
}

.hero-positioning {
  max-width: 44em;
  margin: 18px auto 0;
  color: #3d4349;
  font-size: 20px;
  line-height: 1.7;
  text-align: center;
  text-wrap: balance;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 20px 28px;
  margin-top: 38px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  min-width: 150px;
  min-height: 48px;
  padding: 11px 20px;
  border: 1px solid currentColor;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  white-space: nowrap;
  transition: color 200ms ease, background 200ms ease, transform 200ms ease;
}

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

.button:active {
  transform: translateY(0);
}

.button-light {
  color: var(--paper);
}

.button-light:hover {
  color: var(--ink);
  background: var(--paper);
}

/* 首屏电话保留真实拨号入口，以文字链接代替矩形按钮。 */
.hero .actions a[href^="tel:"] {
  justify-content: center;
  min-width: 0;
  min-height: 48px;
  padding: 11px 4px;
  border: 0;
  border-radius: 0;
  color: var(--ink);
  background: transparent;
  box-shadow: none;
  font-weight: 400;
  text-decoration-line: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 8px;
}

.hero .actions a[href^="tel:"]:hover {
  color: var(--red);
  background: transparent;
  text-decoration-thickness: 2px;
}

.arrow {
  margin-left: 22px;
  font-family: Arial, sans-serif;
  font-size: 20px;
  font-weight: 400;
}

.secondary {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  border-bottom: 1px solid rgba(255, 255, 255, .7);
  color: var(--paper);
  font-size: 15px;
  transition: color 200ms ease, border-color 200ms ease;
}

.secondary:hover {
  color: var(--paper);
  border-color: var(--paper);
}

.hero .actions .secondary {
  min-height: 48px;
  padding: 11px 4px;
  border-bottom: 0;
  color: var(--ink);
  line-height: 1.5;
  text-decoration-line: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 8px;
}

.hero .actions .secondary:hover {
  color: var(--red);
  text-decoration-thickness: 2px;
}

.hero .actions { justify-content: center; }

.hero a:focus-visible {
  outline-color: var(--red);
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  background: #cfe4ef;
}

.hero-media::after {
  display: none;
}

.hero-photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 66%;
  opacity: 1;
  transition: transform 650ms var(--ease);
}

/* 首屏动效只在用户与页面发生交互时启动，避免自动循环干扰阅读。 */
.hero::before {
  position: absolute;
  inset: 0;
  z-index: 1;
  content: "";
  pointer-events: none;
  opacity: 0;
  transform: translateX(-8%);
  transition: opacity 320ms ease, transform 900ms var(--ease);
}

.hero-china::before {
  background: rgba(197, 30, 47, .08);
}

.hero-overseas::before {
  background: rgba(32, 55, 75, .08);
}

.hero:hover::before,
.hero:focus-within::before {
  opacity: 1;
  transform: translateX(8%);
}

.hero:hover .hero-photo,
.hero:focus-within .hero-photo { transform: scale(1.025); }

.hero-china .hero-photo { object-position: 50% 54%; }
.hero-overseas .hero-photo { object-position: 50% 48%; }

.hero .actions a.button-light,
.hero .actions .secondary {
  min-width: 0;
  min-height: 50px;
  padding: 12px 22px;
  border: 1px solid var(--navy);
  border-radius: 999px;
  box-shadow: 0 8px 18px rgba(16, 36, 56, .08);
  font-size: 15px;
  font-weight: 400;
  line-height: 1.5;
  text-decoration: none;
  transition: color 220ms ease, background-color 220ms ease, border-color 220ms ease, transform 220ms ease, box-shadow 220ms ease;
}

.hero .actions a.button-light {
  color: var(--ink);
  background: rgba(255, 255, 255, .78);
}

.hero .actions .secondary {
  color: var(--ink);
  background: rgba(255, 255, 255, .82);
}

.hero .actions a.button-light:hover,
.hero .actions a.button-light:focus-visible,
.hero .actions .secondary:hover,
.hero .actions .secondary:focus-visible {
  color: var(--paper);
  border-color: var(--red);
  background: var(--red);
  box-shadow: 0 10px 22px rgba(197, 30, 47, .14);
  transform: translateY(-2px);
}

.hero .actions a.button-light:active,
.hero .actions .secondary:active {
  transform: translateY(0);
}

.section {
  padding-block: var(--section-space);
}

/* 区块颜色交替 - 米白色背景 */
.section-bg-pale {
  background: var(--pale);
}

section[id] {
  scroll-margin-top: 88px;
}

.section-intro {
  max-width: 850px;
}

.section-label {
  margin-bottom: 12px;
  color: var(--red);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0;
}

/* 栏目名称为视觉主标题，下面的介绍句退为次级信息；两区共用。 */
.services .section-label,
.clients .section-label,
.about .section-label {
  font-size: var(--font-section-label);
  line-height: 1.45;
  text-wrap: balance;
}

.services .section-intro h2,
.clients .section-intro h2,
.about .section-intro h2 {
  font-size: var(--font-section-summary);
  font-weight: 500;
  line-height: 1.65;
}

.section-intro > p:last-child {
  margin-top: 16px;
}

/* 参考圆角分组的组织方式；文字、服务内容与原有锚点保持不变。 */
.service-shell {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  align-items: start;
  gap: 48px;
  padding: 56px 40px;
  border-radius: var(--service-radius);
  background: var(--service-surface);
}

.services .section-intro { max-width: 440px; }
.services .service-summary-title { white-space: pre-line; }
.services .section-label { color: var(--ink); }
.services .section-label::after {
  display: block;
  width: 42px;
  height: 3px;
  margin-top: 16px;
  background: var(--red);
  content: "";
}
.services .section-intro > p:last-child { margin-top: 20px; line-height: 1.9; }
.service-content { min-width: 0; }
.service-list { position: relative; display: grid; gap: 14px; }
.service { min-width: 0; overflow-wrap: anywhere; }
.service summary {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr) 24px;
  align-items: center;
  gap: 14px;
  min-height: 100px;
  padding: 24px;
  border: 1px solid transparent;
  border-radius: 20px;
  background: var(--paper);
  list-style: none;
  cursor: pointer;
  transition: border-color 240ms ease, background-color 240ms ease;
}
.service summary::-webkit-details-marker { display: none; }
.service summary:hover { border-color: #d8d8d8; }
.service summary:active { background: #ececec; }
.service summary:focus-visible { outline-offset: 4px; }
.service h3 { color: var(--ink); font-size: 22px; line-height: 1.55; font-weight: 600; text-wrap: balance; transition: color 240ms ease; }
/* 本地图标使用蒙版继承文字颜色，不增加脚本或外部字体请求。 */
.service-icon {
  display: block;
  width: 28px;
  height: 28px;
  color: var(--ink);
  background-color: currentColor;
  -webkit-mask: var(--service-icon) center / contain no-repeat;
  mask: var(--service-icon) center / contain no-repeat;
  transition: color 240ms ease;
}
.service-icon-network { --service-icon: url("assets/service-icons/network.svg"); }
.service-icon-consultation { --service-icon: url("assets/service-icons/messages-square.svg"); }
.service-icon-scale { --service-icon: url("assets/service-icons/scale.svg"); }
.service-icon-globe { --service-icon: url("assets/service-icons/globe.svg"); }
.service-icon-building { --service-icon: url("assets/service-icons/building-2.svg"); }
.service-icon-contact { --service-icon: url("assets/service-icons/contact-round.svg"); }
.service[open] > summary :is(.service-icon, h3),
.service summary:focus-visible :is(.service-icon, h3) { color: var(--red); }
@media (hover: hover) and (pointer: fine) {
  .service summary:hover :is(.service-icon, h3) { color: var(--red); }
}
.service-expand {
  display: grid;
  place-items: center;
  width: 24px;
  height: 28px;
  color: var(--red);
  font-size: 26px;
  line-height: 1;
  transition: transform 250ms ease;
}
.service[open] summary { border-color: var(--red); }
.service[open] .service-expand { transform: rotate(45deg); }
.service-body { margin-top: 14px; padding: 26px 28px; border-radius: 20px; background: var(--paper); }
.service-intro { display: block; max-width: 45em; margin: 0 0 22px; color: var(--body); font-size: 16px; line-height: 1.85; }
.scope-label { margin-bottom: 16px; color: var(--body); font-size: 14px; }
.service-topic-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px 32px; margin: 0; padding: 0; list-style: none; }
.service-topic-list li { min-width: 0; }
.service-topic {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  width: 100%;
  min-height: 44px;
  padding: 0 0 12px;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.55;
  text-align: left;
  overflow-wrap: normal;
  word-break: normal;
  text-wrap: pretty;
  cursor: pointer;
  transition: color 220ms ease, border-color 220ms ease;
}
.service-topic::after { content: none; display: none; }
.service-topic:hover,
.service-topic:focus-visible,
.service-topic-list li.is-active .service-topic { color: var(--red); border-color: var(--red); }
.service-topic:hover::after,
.service-topic:focus-visible::after { color: var(--red); }
.service-topic-detail {
  max-width: 34em;
  max-height: 0;
  margin: 0;
  padding-top: 0;
  overflow: hidden;
  color: var(--body);
  font-size: 17px;
  line-height: 1.75;
  overflow-wrap: normal;
  word-break: normal;
  text-wrap: pretty;
  opacity: 0;
  transform: translateY(-5px);
  transition: max-height 280ms var(--ease), opacity 220ms ease, padding-top 220ms ease, transform 280ms var(--ease);
}
.service-topic-list li.is-active .service-topic-detail {
  max-height: 30em;
  padding-top: 10px;
  opacity: 1;
  transform: translateY(0);
}
html:not(.has-js) .service-topic-detail {
  max-height: 30em;
  padding-top: 10px;
  opacity: 1;
  transform: none;
}
html.has-js .service-topic-detail { display: none; }
.service-consult { display: inline-flex; align-items: center; min-height: 44px; margin-top: 22px; border-bottom: 1px solid currentColor; color: var(--ink); font-size: 16px; font-weight: 500; transition: color 200ms ease, transform 200ms ease; }
.service-consult:hover { color: var(--red); }
.service-consult:active { transform: translateY(1px); }

/* 二级服务使用独立便当盒展示，标题、说明、相关服务与咨询入口形成清晰阅读层级。 */
.service-dialog {
  width: min(900px, calc(100% - 40px));
  max-height: min(720px, calc(100dvh - 56px));
  margin: auto;
  padding: 0;
  border: 0;
  border-radius: 4px;
  color: var(--ink);
  background: var(--paper);
  box-shadow: 0 24px 80px rgba(16, 36, 56, .24);
}
.service-dialog::backdrop { background: rgba(16, 36, 56, .56); }
.service-dialog[open] { animation: service-dialog-enter 260ms var(--ease); }
.service-dialog-form { margin: 0; padding: 0; }
.service-dialog-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 24px;
  border-bottom: 1px solid var(--line);
}
.service-dialog-kicker { color: var(--red); font-size: 12px; font-weight: 700; letter-spacing: .08em; }
.service-dialog-close {
  display: grid;
  width: 58px;
  height: 42px;
  padding: 0;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--ink);
  background: transparent;
  cursor: pointer;
  white-space: nowrap;
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  transition: color 200ms ease, border-color 200ms ease, background-color 200ms ease;
}
.service-dialog-close:hover,
.service-dialog-close:focus-visible { color: var(--paper); border-color: var(--red); background: var(--red); }
.service-dialog-grid { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(260px, .88fr); gap: 20px; padding: 30px; }
.service-dialog-main { padding: 12px 18px 18px 4px; }
.service-dialog-main h2 { margin: 8px 0 20px; color: var(--ink); font-size: clamp(28px, 4vw, 44px); font-weight: 600; line-height: 1.25; }
.service-dialog-intro { max-width: 34em; color: var(--body); font-size: 19px; line-height: 1.85; overflow-wrap: normal; word-break: normal; text-wrap: pretty; }
.service-dialog-link { display: inline-flex; margin-top: 28px; padding: 12px 18px; border: 1px solid var(--ink); border-radius: 999px; color: var(--ink); font-size: 14px; transition: color 200ms ease, background-color 200ms ease, transform 200ms ease; }
.service-dialog-link:hover, .service-dialog-link:focus-visible { color: var(--paper); background: var(--red); transform: translateY(-2px); }
.service-dialog-bento { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.service-dialog-card { min-height: 142px; padding: 20px; border: 1px solid var(--line); background: var(--white); }
.service-dialog-card:first-child { grid-column: 1 / -1; min-height: 118px; background: #eef2f4; }
.service-dialog-card h3 { margin: 0 0 13px; color: var(--ink); font-size: 15px; font-weight: 700; }
.service-dialog-card p { color: var(--body); font-size: 16px; line-height: 1.75; overflow-wrap: normal; word-break: normal; text-wrap: pretty; }
.service-dialog-related { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.service-dialog-related li { color: var(--body); font-size: 15px; line-height: 1.6; overflow-wrap: normal; word-break: normal; text-wrap: pretty; }
.service-dialog-related li::before { display: inline-block; width: 5px; height: 5px; margin: 0 8px 3px 0; border-radius: 50%; background: var(--red); content: ""; }
@keyframes service-dialog-enter { from { opacity: 0; transform: translateY(12px) scale(.985); } to { opacity: 1; transform: none; } }

/* 桌面增强为同一行入口及通栏详情；无脚本时原生 details 仍可使用。 */
@media (min-width: 651px) {
  .service-list.is-enhanced { grid-template-columns: repeat(3, minmax(0, 1fr)); padding-bottom: var(--service-panel-space, 0px); }
  .service-list.is-enhanced .service { height: 100%; }
  .service-list.is-enhanced summary { min-height: 140px; height: 100%; padding: 22px 20px; }
  .service-list.is-enhanced .service-body { position: absolute; top: calc(var(--service-tab-size, 140px) + 18px); left: 0; right: 0; margin: 0; }
}
@media (prefers-reduced-motion: no-preference) {
  .service[open] .service-body { animation: service-enter 320ms var(--ease); }
}
@keyframes service-enter {
  from { opacity: 0; transform: translateY(7px); }
  to { opacity: 1; transform: translateY(0); }
}

.clients {
  border-top: 1px solid var(--line);
  background: var(--paper);
}

.clients .section-intro { max-width: 940px; margin-inline: auto; text-align: center; }
.clients .client-disclaimer { max-width: 960px; margin: 32px auto 0; text-align: center; }

.logos {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 20px 28px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.logos li {
  display: grid;
  min-width: 0;
  min-height: 92px;
  place-items: center;
}

.logos img {
  width: 138px;
  height: 64px;
  object-fit: contain;
  filter: none;
  transition: transform 350ms var(--ease);
}

.client-disclaimer {
  max-width: 76em;
  margin-top: 25px;
  color: var(--body);
  font-size: 14px;
  line-height: 1.8;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(300px, .88fr);
  gap: 8%;
}

.about { background: var(--pale); }

.about-copy > p {
  max-width: 720px;
}

.about-copy > .section-intro { max-width: 760px; }
.about-copy > p,
.about-copy > p + p {
  font-size: var(--font-body);
  line-height: 1.8;
}
.about-copy > p + p { margin-top: 24px; }
.about-scope { color: var(--ink); }
.about-contact { padding-top: 12px; }
.about-contact-kicker {
  margin-bottom: 18px;
  color: var(--red);
  font-size: 15px;
  font-weight: 700;
}

.contact-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 0;
  padding: 0;
  border-top: 0;
}

.contact-list > div {
  display: grid;
  grid-template-columns: 1fr;
  align-content: start;
  gap: 12px;
}

.contact-pill {
  position: relative;
  padding: 20px 24px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  cursor: default;
  transition: color 220ms ease, border-color 220ms ease, background-color 220ms ease, transform 220ms ease, box-shadow 220ms ease;
}

.contact-pill:hover,
.contact-pill:focus-visible {
  border-color: var(--red);
  background: #fffafa;
  box-shadow: 0 10px 24px rgba(197, 30, 47, .1);
  transform: translateX(6px);
}

.contact-pill::after {
  position: absolute;
  top: 50%;
  right: 24px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--red);
  content: "";
  opacity: 0;
  transform: translateY(-50%) scale(.6);
  transition: opacity 220ms ease, transform 220ms ease;
}

.contact-pill:hover::after,
.contact-pill:focus-visible::after { opacity: 1; transform: translateY(-50%) scale(1); }

.contact-list dt {
  color: var(--body);
  font-size: 15px;
}

.contact-list dd {
  margin: 0;
  font-size: 16px;
  overflow-wrap: anywhere;
}

.contact-list a {
  transition: color 200ms ease;
}

.contact-list a:hover {
  color: var(--red);
}

.contact-band {
  padding-block: 72px;
  color: var(--ink);
  background: var(--paper);
}

.contact-band-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
  text-align: center;
}

.contact-band .section-label {
  margin-bottom: 12px;
  color: var(--red);
  font-size: var(--font-section-label);
  line-height: 1.45;
}

.contact-band h2 {
  color: var(--ink);
  font-size: var(--font-section-summary);
  font-weight: 500;
  line-height: 1.65;
}

.contact-band .button-light { color: var(--ink); min-width: 168px; }
.contact-band .button-light:hover { color: var(--paper); background: var(--navy); }

.site-footer {
  padding-block: 32px;
  border-top: 1px solid var(--line);
  color: var(--body);
  background: var(--pale);
}

.footer-inner {
  display: grid;
  grid-template-columns: auto auto 1fr;
  align-items: center;
  gap: 28px;
}

.site-footer p {
  color: var(--body);
  font-size: 13px;
  line-height: 1.7;
}

.site-footer p:last-child {
  grid-column: 1 / -1;
  justify-self: end;
  text-align: right;
}

.reveal.is-pending {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 520ms ease, transform 520ms var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.consultation { background: var(--pale); }
.consultation-grid { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: 40px 8%; }
.consultation-intro { max-width: 420px; }
.consultation-intro h2::after { display: block; width: 40px; height: 2px; margin-top: 24px; background: var(--red); content: ""; }
.consultation-intro .form-note { font-size: 16px; margin-top: 20px; }
.consultation-phone { display: inline-flex; flex-direction: column; gap: 4px; margin-top: 20px; padding-block: 12px; border-bottom: 1px solid var(--line); }
.consultation-phone span { color: var(--body); font-size: 14px; }
.consultation-phone strong { font-size: clamp(20px, 2vw, 26px); font-weight: 600; font-variant-numeric: tabular-nums; }
.consultation-phone:hover { color: var(--red); }
.consultation-policies { grid-column: 1 / -1; display: grid; grid-template-columns: 1fr 1fr; gap: 32px 8%; margin-top: 12px; padding-top: 28px; border-top: 1px solid var(--line); }
.contact-form { width: 100%; max-width: 760px; margin-top: 0; padding: 32px; background: var(--paper); }
.contact-form fieldset { min-width: 0; margin: 0; padding: 0; border: 0; }
.contact-form label { display: block; margin-bottom: 8px; font-size: 15px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.field { margin-bottom: 20px; }
.field input, .field textarea { width: 100%; min-width: 0; padding: 12px; border: 1px solid #82909b; border-radius: var(--radius); font: inherit; font-size: 16px; background: var(--paper); color: var(--ink); }
.field textarea { resize: vertical; }
.field input:focus-visible, .field textarea:focus-visible { outline: 2px solid var(--navy); outline-offset: 2px; }
.field [aria-invalid="true"] { border-color: var(--red); }
.field-error { color: var(--red); font-size: 14px; }
.form-note { margin-block: 12px; font-size: 14px; }
.consent-field { display: flex; align-items: flex-start; gap: 12px; }
.consent-field input { flex: 0 0 auto; width: 20px; height: 20px; margin-top: 4px; accent-color: var(--ink); }
.contact-form button { background: var(--navy); color: white; cursor: pointer; margin-top: 16px; }
.contact-form button:disabled { opacity: .6; cursor: wait; }
.form-status { margin-top: 16px; padding: 12px; background: var(--pale); line-height: 1.8; }
.form-status.is-error { color: var(--red); }
.privacy-note { max-width: 760px; scroll-margin-top: 96px; }
.privacy-note h3 { font-size: 18px; margin-bottom: 10px; }
.privacy-note p { font-size: 14px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 20px; font-size: 14px; }
.footer-links a { display: inline-flex; align-items: center; min-height: 44px; }
.mobile-menu { overflow-y: auto; }
html[lang="en"] .brand strong { max-width: 190px; font-size: 17px; }
html[lang="en"] .hero h1 { max-width: min(100%, 1000px); font-size: clamp(38px, 4.6vw, 62px); letter-spacing: 0; gap: 0; }
html[lang="en"] .hero-slogan { display: block; }
html[lang="en"] .hero-slogan span { white-space: normal; }
html[lang="en"] .hero-slogan span + span::before { content: " "; }
html[lang="en"] .hero .brand-line { display: inline; margin: 0; }
@media (min-width: 1181px) and (max-width: 1360px) {
  html[lang="en"] .brand strong { max-width: 150px; }
  .desktop-nav { gap: 16px; }
  .header-inner { gap: 18px; }
}
@media (min-width: 641px) and (max-width: 1024px) {
  html[lang="en"] .hero h1 { max-width: 100%; font-size: 44px; gap: 10px; }
}
@media (max-width: 640px) {
  html[lang="en"] .brand strong { max-width: 175px; font-size: 16px; }
  html[lang="en"] .hero h1 { flex-wrap: wrap; white-space: normal; font-size: 31px; gap: 10px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
}

.not-found {
  display: grid;
  min-height: 100vh;
  padding: 32px;
  place-items: center;
  background: var(--pale);
}

.not-found-inner {
  width: min(100%, 680px);
  text-align: center;
}

.not-found .brand {
  width: fit-content;
  margin: 0 auto 46px;
  text-align: left;
}

.not-found-language {
  justify-content: center;
  margin-bottom: 32px;
}

.not-found-code {
  color: var(--red);
  font-size: 13px;
  font-weight: 700;
}

.not-found h1 {
  margin-top: 10px;
  font-size: 38px;
}

.not-found-inner > p:not(.not-found-code) {
  max-width: 550px;
  margin: 15px auto 28px;
}

.not-found .button {
  color: var(--paper);
  background: var(--navy);
}

@media (hover: hover) and (pointer: fine) {
  .logos li:hover img {
    transform: translateY(-5px) scale(1.07);
  }
}

.logos li:focus-visible img {
  transform: translateY(-5px) scale(1.07);
}

.logos.client-grid {
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 16px 24px;
  margin-top: 48px;
  background: var(--paper);
}

.client-grid li {
  position: relative;
  isolation: isolate;
  grid-column: span 3;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 146px;
  padding: 20px 12px;
}

.client-grid li:nth-child(-n+3) { grid-column: span 4; min-height: 174px; margin-bottom: 12px; padding-bottom: 32px; border-bottom: 1px solid var(--line); }
.client-grid li:nth-child(12), .client-grid li:nth-child(13), .client-grid li:nth-child(14), .client-grid li:nth-child(15) { grid-column: span 3; }
.client-grid li:nth-last-child(-n+4) { border-bottom: 0; }
.logo-box { display: flex; align-items: center; justify-content: center; width: 100%; min-height: 72px; }
.client-grid img { width: 100%; max-width: 190px; height: 70px; object-fit: contain; mix-blend-mode: multiply; }
.client-grid p { max-width: 20em; margin-top: 16px; text-align: center; font-size: 14px; line-height: 1.8; overflow-wrap: anywhere; text-wrap: balance; }
.name-only strong { max-width: 17em; text-align: center; font-size: 19px; line-height: 1.6; overflow-wrap: anywhere; }
.client-grid li::before {
  position: absolute;
  inset: 4px 0;
  z-index: -1;
  background: #f5f6f7;
  opacity: 0;
  content: "";
  transition: opacity 280ms ease;
}
.client-grid li::after {
  position: absolute;
  inset: auto 30% 6px;
  height: 2px;
  background: var(--red);
  content: "";
  transform: scaleX(0);
  transition: transform 380ms var(--ease);
}
.client-grid img { transition: transform 420ms var(--ease); }
.client-grid p, .client-grid strong { transition: color 240ms ease, transform 380ms var(--ease); }
.client-grid li:is(:focus-visible, .is-highlighted) img { transform: translateY(-8px) scale(1.1); }
.client-grid li:is(:focus-visible, .is-highlighted) :is(p, strong) { color: var(--red); transform: translateY(-2px); }
.client-grid li:is(:focus-visible, .is-highlighted)::before { opacity: 1; }
.client-grid li:is(:focus-visible, .is-highlighted)::after { transform: scaleX(1); }
.client-grid li:focus-visible { outline: 2px solid var(--red); outline-offset: 3px; }

@media (hover: hover) and (pointer: fine) {
  .client-grid li:hover img { transform: translateY(-8px) scale(1.1); }
  .client-grid li:hover :is(p, strong) { color: var(--red); transform: translateY(-2px); }
  .client-grid li:hover::before { opacity: 1; }
  .client-grid li:hover::after { transform: scaleX(1); }
}

@media (max-width: 1000px) {
  .hero { min-height: 700px; }
  .hero-content.wrap { padding: 64px 0; }
  .consultation-grid { grid-template-columns: 1fr; gap: 32px; }
  .consultation-intro { max-width: 620px; }
  .contact-form { max-width: none; }
  .logos.client-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .client-grid li, .client-grid li:nth-child(-n+3), .client-grid li:nth-child(12), .client-grid li:nth-child(13), .client-grid li:nth-child(14), .client-grid li:nth-child(15), .client-grid li:last-child { grid-column: auto; }
  .client-grid li:nth-child(n) { border-bottom: 0; margin-bottom: 0; }
  .client-grid li:nth-child(-n+3) { border-bottom: 1px solid var(--line); }
  .client-grid li:last-child { grid-column: auto; }
  .name-only strong { font-size: 18px; }
}

@media (max-width: 650px) {
  .service-shell { padding: 36px 18px; gap: 30px; border-radius: 20px; }
  .service-list { gap: 12px; }
  .service summary { min-height: 88px; padding: 20px 18px; gap: 10px; border-radius: 18px; }
  .service h3 { font-size: 21px; }
  .service-body { padding: 24px 18px; border-radius: 18px; }
  .service-intro { font-size: 15px; }
  .service-topic-list { grid-template-columns: 1fr; gap: 14px; }
  .service-topic { padding-bottom: 10px; font-size: 17px; }
  .service-topic-detail { font-size: 17px; }
  .logos.client-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .client-grid li:nth-child(n) { min-height: 148px; padding: 18px 8px; border: 0; }
  .client-grid img { max-width: 170px; height: 64px; }
  .client-grid p { font-size: 13px; }
  .name-only strong { font-size: 16px; }
}

@media (max-width: 1180px) {
  .hero-content.wrap { width: calc(100% - 64px); }
  .hero h1 { font-size: 48px; }
  .wrap {
    width: calc(100% - 64px);
  }

  .desktop-nav {
    gap: 16px;
  }

  .service-shell { grid-template-columns: 1fr; gap: 32px; }
  .services .section-intro { max-width: 780px; }

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

@media (max-width: 1180px) {
  .desktop-nav {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .header-tools {
    margin-left: auto;
  }

  .header-tools > .language-switcher {
    display: none;
  }
}

@media (max-width: 930px) {

  .about-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }

  .site-footer p:last-child {
    grid-column: 1 / -1;
    justify-self: start;
    text-align: left;
  }
}

@media (max-width: 640px) {
  :root { --font-body: 16px; --font-heading: 27px; --font-section-label: 24px; --font-section-summary: 19px; --section-space: 64px; }
  .wrap {
    width: calc(100% - 40px);
  }

  .site-header,
  .site-header.is-scrolled {
    height: 72px;
  }

  .brand img {
    width: 39px;
    height: 39px;
  }

  .brand strong {
    font-size: 19px;
  }

  .brand small {
    font-size: 10px;
  }

  .mobile-menu {
    inset: 72px 0 0;
    padding-inline: 20px;
  }

  .hero { min-height: 680px; }
  .hero::after { background: rgba(255, 255, 255, .58); }
  .hero-content.wrap { width: calc(100% - 40px); padding: 56px 0; }
  .hero-china .hero-photo { object-position: 50% 54%; }
  .hero-overseas .hero-photo { object-position: 50% 48%; }
  .hero-media::after { display: none; }

  .hero h1 {
    gap: 10px;
    font-size: 38px;
  }

  .brand-line {
    display: inline;
    margin: 0;
    font-size: .68em;
  }

  .hero-positioning {
    max-width: 32em;
    margin-top: 20px;
    font-size: 16px;
  }

  .actions {
    gap: 14px 20px;
    margin-top: 30px;
  }

  .button {
    min-width: 128px;
    justify-content: center;
  }

  .consultation-policies { grid-template-columns: 1fr; gap: 24px; }
  .contact-form { padding: 24px 20px; }
  .consultation-grid { width: calc(100% - 40px); }
  .service-shell { gap: 26px; }
  .services .section-intro > p:last-child { margin-top: 18px; }

  .logos {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 24px;
  }

  .logos li {
    min-height: 78px;
  }

  .contact-list > div {
    grid-template-columns: 1fr;
    gap: 6px;
  }
  .contact-list { grid-template-columns: 1fr; }

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

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .site-footer p:last-child {
    grid-column: auto;
  }

  .not-found {
    padding: 24px 20px;
  }

  .not-found h1 {
    font-size: 30px;
  }
}

/* 只移除装饰性方向箭头，不影响菜单、展开和关闭控件。 */
.decorative-arrow { display: none; }

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

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

  .reveal,
  .reveal.is-pending {
    opacity: 1;
    transform: none;
  }

  .hero-photo,
  .logos img {
    transform: none !important;
  }
  .client-grid li :is(p, strong) { transform: none !important; }
  .service-consult:hover { transform: none; }
}

@media (max-width: 640px) {
  .service-topic::after { font-size: 11px; }
  .service-dialog {
    width: calc(100% - 28px);
    max-height: calc(100dvh - 28px);
    border-radius: 8px;
  }
  .service-dialog-head { padding: 14px 16px; }
  .service-dialog-grid { grid-template-columns: 1fr; gap: 0; padding: 20px 16px 24px; }
  .service-dialog-main { padding: 4px 0 22px; }
  .service-dialog-main h2 { margin-bottom: 14px; font-size: 28px; }
  .service-dialog-intro { font-size: 16px; }
  .service-dialog-bento { grid-template-columns: 1fr 1fr; }
  .service-dialog-card { min-height: 128px; padding: 16px; }
  .service-dialog-card:first-child { grid-column: 1 / -1; min-height: 104px; }
  .service-dialog-card h3 { font-size: 14px; }
  .service-dialog-card p, .service-dialog-related li { font-size: 14px; }
}

@media (max-width: 350px) {
  .hero h1 { gap: 6px; font-size: 31px; }
  .hero .brand-line { font-size: .64em; }
  html[lang="en"] .hero h1 { flex-wrap: wrap; white-space: normal; line-height: 1.15; }
  html[lang="en"] .hero .brand-line { font-size: .62em; }
}

/* 连接导航入口与下拉菜单之间的悬停区域。 */
.nav-dropdown::before { content: ""; position: absolute; top: -5px; left: 0; right: 0; height: 5px; }