/* 细川密克朗 - 公用头部 / 底部 (设计基准 1920px，流体字号) */

*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  /* 1920 稿面：导航 20px / 底栏标题 18px / 正文 16px */
  --font-nav: clamp(15px, 1.0417vw, 20px);
  --font-title: clamp(14px, 0.9375vw, 18px);
  --font-body: clamp(13px, 0.8333vw, 16px);
  --font-nav-mobile: clamp(16px, 4.8vw, 20px);

  /* logo.png 972×115，1920 稿面显示宽约 490px */
  --logo-width: clamp(200px, 25.5208vw, 490px);
  --icon-size: clamp(18px, 1.0417vw, 20px);
  --qr-size: clamp(80px, 5.2083vw, 100px);

  /* 版心：1920 下 1600px = 83.3333% */
  --layout-width: 83.3333%;
  --layout-max: 1600px;
  --space-nav-gap: clamp(16px, 2.5vw, 56px);
  --space-header-y: clamp(12px, 1.0417vw, 20px);
  --space-footer-main-y: clamp(32px, 2.9167vw, 56px);
}

html {
  font-size: var(--font-body);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family:
    "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: #333333;
  background: #fff;
  line-height: 1.5;
}

body.is-nav-open {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
}

.container {
  width: var(--layout-width);
  max-width: var(--layout-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 0;
  padding-right: 0;
}

/* ========== Header ========== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: #ffffff;
  transition: box-shadow 0.25s ease;
}

.site-header.is-scrolled {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(16px, 1.6667vw, 32px);
  min-height: clamp(72px, 5.2083vw, 100px);
  padding-top: var(--space-header-y);
  padding-bottom: var(--space-header-y);
}

.site-logo {
  flex-shrink: 0;
  display: block;
}

.site-logo__img {
  width: var(--logo-width);
  height: auto;
}

.site-nav {
  flex: 1;
  display: flex;
  justify-content: flex-end;
}

.site-nav__list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px var(--space-nav-gap);
}

.site-nav__link {
  font-size: var(--font-nav);
  font-weight: 600;
  color: #333333;
  white-space: nowrap;
  position: relative;
  padding: 4px 0;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: #0066b3;
  transform: scaleX(0);
  transition: transform 0.2s ease;
}

.site-nav__link:hover,
.site-nav__link:focus-visible {
  color: #0066b3;
}

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

.site-tools {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.25vw, 24px);
  flex-shrink: 0;
}

.site-tools__btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px;
  transition: opacity 0.2s ease;
}

.site-tools__btn:hover {
  opacity: 0.7;
}

.site-tools__btn.is-active {
  opacity: 0.55;
}

.site-tools__btn img {
  width: var(--icon-size);
  height: var(--icon-size);
}

.site-tools__lang-text {
  font-size: var(--font-body);
  font-weight: 600;
  color: #333333;
  letter-spacing: 0.02em;
}

/* Header search panel */
.site-search-panel {
  display: none;
  flex: 1;
  align-self: stretch;
  min-width: 0;
  position: relative;
  z-index: 1001;
}

.site-header.is-search-open .site-search-panel,
.site-search-panel.is-open {
  display: block;
}

.site-header.is-search-open .site-nav {
  display: none;
}

.site-header.is-search-open .site-tools__search {
  display: none;
}

.site-search-panel__inner {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 100%;
  min-height: 100%;
}

.site-search-panel__form {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.25vw, 20px);
  width: 100%;
  min-width: 0;
  padding: 4px 0 10px;
  border-bottom: 1px solid #4a5568;
  background: transparent;
}

.site-search-panel__input {
  flex: 1;
  min-width: 0;
  border: none;
  outline: none;
  padding: 0;
  font-size: clamp(14px, 0.9375vw, 18px);
  line-height: 1.4;
  color: #333333;
  background: transparent;
}

.site-search-panel__input::placeholder {
  color: #b0b0b0;
}

.site-search-panel__input::-webkit-search-decoration,
.site-search-panel__input::-webkit-search-cancel-button {
  -webkit-appearance: none;
  appearance: none;
}

.site-search-panel__actions {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.25vw, 20px);
  flex-shrink: 0;
}

.site-search-panel__submit,
.site-search-panel__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
  flex-shrink: 0;
  transition: opacity 0.2s ease;
}

.site-search-panel__submit:hover,
.site-search-panel__close:hover {
  opacity: 0.7;
}

.site-search-panel__submit img {
  width: var(--icon-size);
  height: var(--icon-size);
}

.site-search-panel__close {
  font-size: 28px;
  line-height: 1;
  color: #333333;
  font-weight: 300;
}

/* 搜索展开：整宽白色下拉（含两侧） */
.site-search-dropdown {
  display: none;
  width: 100%;
  background: #ffffff;
  padding: 8px 0 clamp(36px, 3.125vw, 56px);
}

.site-header.is-search-open .site-search-dropdown,
.site-search-dropdown.is-open {
  display: block;
}

.site-search-dropdown__inner {
  display: block;
}

.site-search-dropdown__offset {
  /* 与头部 logo + 间距对齐，热词落在搜索框正下方 */
  padding-left: calc(var(--logo-width) + clamp(16px, 1.6667vw, 32px));
  padding-right: clamp(16px, 1.6667vw, 32px);
}

.site-search-panel__hot-title {
  margin: 0 0 12px;
  font-size: clamp(13px, 0.833vw, 16px);
  font-weight: 600;
  line-height: 1.4;
  color: #e85d4c;
}

.site-search-panel__hot-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-search-panel__hot-list li + li {
  margin-top: 10px;
}

.site-search-panel__hot-list a {
  display: inline-block;
  font-size: clamp(13px, 0.833vw, 16px);
  font-weight: 500;
  line-height: 1.4;
  color: #1a3a6b;
  text-decoration: none;
  transition: color 0.2s ease;
}

.site-search-panel__hot-list a:hover,
.site-search-panel__hot-list a:focus-visible {
  color: #2eb4c6;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.site-nav__extras {
  display: none;
}

.site-nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 32px;
  height: 32px;
  padding: 4px;
}

.site-nav-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  background: #333333;
  border-radius: 1px;
  transition:
    transform 0.25s ease,
    opacity 0.25s ease;
}

.site-nav-toggle.is-active .site-nav-toggle__bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.site-nav-toggle.is-active .site-nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.site-nav-toggle.is-active .site-nav-toggle__bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.site-nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 998;
  background: rgba(0, 0, 0, 0.4);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.site-nav-overlay.is-visible {
  opacity: 1;
  pointer-events: auto;
}

/* ========== Header mega menus ========== */

.site-header {
  overflow: visible;
}

.site-nav__item--mega {
  position: static;
}

.site-nav__mega-trigger.is-open {
  color: #0066b3;
}

.site-nav__mega-trigger.is-open::after {
  transform: scaleX(1);
}

.site-nav__submenu {
  display: none;
}

.site-nav__mega-chevron {
  display: none;
}

.site-mega-panel {
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  z-index: 999;
  background: #ffffff;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.1);
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 0.22s ease,
    visibility 0.22s ease;
}

.site-mega-panel.is-open {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
}

.site-mega-panel[aria-hidden="false"] {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
}

.site-mega[hidden] {
  display: none !important;
}

.site-mega--solution .site-mega__inner {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 0;
}

.site-mega-solution__layout {
  display: grid;
  grid-template-columns: minmax(260px, 28%) 1fr;
  min-height: clamp(380px, 27vw, 520px);
}

.site-mega-solution__side {
  display: flex;
  flex-direction: column;
  /* padding: clamp(32px, 2.9167vw, 56px) clamp(24px, 2.0833vw, 40px); */
  background: #f5f5f5;
}

.site-mega-solution__cats {
  flex: 1;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-mega-solution__cat-item + .site-mega-solution__cat-item {
  border-top: 1px solid #ebebeb;
}

.site-mega-solution__cat {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 2rem 2rem 2rem 12rem;
  box-sizing: border-box;
  font-size: var(--font-body);
  color: #666666;
  text-align: left;
  border: none;
  background: transparent;
  cursor: pointer;
  transition:
    background 0.2s ease,
    color 0.2s ease;
}

.site-mega-solution__cat:hover,
.site-mega-solution__cat:focus-visible {
  color: #003d7a;
}

.site-mega-solution__cat.is-active {
  color: #003d7a;
  background: #e8eef4;
}

.site-mega-solution__cat-label {
  display: flex;
  align-items: center;
  /* flex-direction: column; */
  gap: 4px;
  line-height: 1.2;
}

.site-mega-solution__cat-en {
  font-size: clamp(13px, 0.8333vw, 16px);
  font-weight: 500;
  color: #888888;
}

.site-mega-solution__cat-zh {
  font-size: clamp(15px, 0.9375vw, 18px);
  font-weight: 700;
  color: #333333;
}

.site-mega-solution__cat.is-active .site-mega-solution__cat-en,
.site-mega-solution__cat.is-active .site-mega-solution__cat-zh {
  color: #003d7a;
}

/* 未选中：向右 > ；选中：向上 ^ */
.site-mega-solution__cat-chevron {
  flex-shrink: 0;
  width: 7px;
  height: 7px;
  margin-right: 4px;
  border-right: 1.5px solid #bdbdbd;
  border-bottom: 1.5px solid #bdbdbd;
  transform: rotate(-45deg);
  transition:
    transform 0.2s ease,
    border-color 0.2s ease;
}

.site-mega-solution__cat.is-active .site-mega-solution__cat-chevron {
  border-color: #003d7a;
  transform: rotate(-135deg);
}

.site-mega-solution__side .site-mega__cta {
  align-self: flex-start;
  margin-top: clamp(24px, 2.0833vw, 40px);
  margin-left: 12rem;
  margin-bottom: 2rem;
}

.site-mega-solution__body {
  position: relative;
  overflow: hidden;
  background: #eef2f6;
}

.site-mega-solution__panels {
  position: relative;
  min-height: inherit;
}

.site-mega-solution__panel {
  position: relative;
  min-height: clamp(380px, 27vw, 520px);
  background-color: #eef2f6;
  overflow: hidden;
}

.site-mega-solution__panel-bg {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  z-index: 0;
  pointer-events: none;
}

.site-mega-solution__panel-bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center right;
}

/* .site-mega-solution__panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(245, 247, 250, 0.92) 0%,
    rgba(245, 247, 250, 0.72) 28%,
    rgba(245, 247, 250, 0.35) 48%,
    rgba(245, 247, 250, 0.08) 68%,
    transparent 85%
  );
  pointer-events: none;
} */

.site-mega-solution__panel[hidden] {
  display: none !important;
}

.site-mega-solution__cols {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 1.875vw, 36px);
  max-width: 100%;
  height: 100%;
  padding: clamp(36px, 3.125vw, 60px) clamp(32px, 2.9167vw, 56px);
  padding-right: clamp(48px, 5vw, 96px);
}

.site-mega-solution__col {
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-mega-solution__col a {
  display: block;
  padding: 7px 0;
  font-size: var(--font-body);
  font-weight: 400;
  line-height: 1.65;
  color: #333333;
}

.site-mega-solution__col a:hover,
.site-mega-solution__col a:focus-visible {
  color: #0066b3;
}

.site-mega-solution__col a.is-highlight {
  font-weight: 600;
  color: #00c4d0;
}

.site-mega--product {
  background: #f0f0f0;
}

.site-mega-product__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 1.875vw, 36px);
  padding: clamp(28px, 2.5vw, 48px) 0;
}

.site-mega-product__group + .site-mega-product__group {
  margin-top: clamp(16px, 1.25vw, 24px);
  padding-top: clamp(16px, 1.25vw, 24px);
  border-top: 1px solid #dddddd;
}

.site-mega-product__title {
  margin: 0 0 10px;
  font-size: var(--font-title);
  font-weight: 700;
  color: #333333;
}

.site-mega-product__title--accent {
  color: #003d7a;
}

.site-mega-product__links--split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px 20px;
}

.site-mega-product__links a {
  display: block;
  padding: 4px 0;
  font-size: var(--font-body);
  color: #333333;
}

.site-mega-product__links a:hover,
.site-mega-product__links a:focus-visible {
  color: #0066b3;
}

.site-mega-product__links a.is-highlight {
  font-weight: 600;
  color: #00c4d0;
}

/* 全站 CTA（首页 banner、头部下拉等共用） */
.home-hero__btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 10px 28px 10px 10px;
  font-size: var(--font-body);
  font-weight: 600;
  color: #ffffff;
  background: linear-gradient(90deg, #00d4dc 0%, #00b8c4 100%);
  border-radius: 20px;
  transition:
    opacity 0.2s ease,
    transform 0.2s ease;
}

.home-hero__btn:hover {
  opacity: 0.92;
  transform: translateY(-1px);
}

.home-hero__btn-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
}

.home-hero__btn-icon img {
  width: auto;
  height: clamp(8px, 0.521vw, 10px);
  filter: brightness(0) invert(1);
}

.site-mega-product__col .site-mega__cta {
  margin-top: clamp(20px, 1.6667vw, 32px);
}

/* 关于细川 / 服务中心下拉（同布局） */
.site-mega-panel:has(#site-mega-about:not([hidden])),
.site-mega-panel:has(#site-mega-service:not([hidden])) {
  background: #fafafa;
}

.site-mega--about,
.site-mega--service {
  background: #fafafa;
}

.site-mega-about__grid,
.site-mega-service__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  column-gap: clamp(28px, 2.5vw, 48px);
  row-gap: clamp(32px, 2.917vw, 56px);
  padding: clamp(36px, 3.125vw, 60px) 0 clamp(40px, 3.333vw, 64px);
}

.site-mega-about__card,
.site-mega-service__card {
  display: block;
  min-width: 0;
  color: inherit;
  text-decoration: none;
  transition: opacity 0.2s ease;
}

.site-mega-about__card:hover .site-mega-about__more,
.site-mega-about__card:focus-visible .site-mega-about__more,
.site-mega-service__card:hover .site-mega-service__more,
.site-mega-service__card:focus-visible .site-mega-service__more {
  color: #ffffff;
  background: #2eb4c6;
  border-color: #2eb4c6;
}

.site-mega-about__card:focus-visible,
.site-mega-service__card:focus-visible {
  outline: 2px solid #2eb4c6;
  outline-offset: 4px;
}

.site-mega-about__title,
.site-mega-service__title {
  margin: 0 0 clamp(14px, 1.042vw, 20px);
  font-size: clamp(16px, 1.042vw, 20px);
  font-weight: 700;
  line-height: 1.35;
  color: #333333;
}

.site-mega-about__row,
.site-mega-service__row {
  display: flex;
  align-items: stretch;
  gap: clamp(16px, 1.25vw, 24px);
}

.site-mega-about__media,
.site-mega-service__media {
  flex-shrink: 0;
  width: clamp(148px, 12.5vw, 240px);
  overflow: hidden;
  border-radius: 8px;
  background: #ececec;
  /* aspect-ratio: 240 / 120; */
}

.site-mega-about__media img,
.site-mega-service__media img {
  display: block;
  width: 100%;
  height: auto;
}

.site-mega-about__content,
.site-mega-service__content {
  display: flex;
  flex: 1;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-start;
  min-width: 0;
  padding-top: 2px;
}

.site-mega-about__desc,
.site-mega-service__desc {
  margin: 0;
  font-size: clamp(12px, 0.729vw, 14px);
  line-height: 1.75;
  color: #666666;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  overflow: hidden;
}

.site-mega-about__more,
.site-mega-service__more {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 7px 18px 7px 14px;
  font-size: clamp(12px, 0.729vw, 14px);
  font-weight: 500;
  line-height: 1;
  color: #2eb4c6;
  background: transparent;
  border: 1px solid #2eb4c6;
  border-radius: 999px;
  white-space: nowrap;
  transition:
    color 0.2s ease,
    background-color 0.2s ease,
    border-color 0.2s ease;
}

.site-mega-about__more:hover,
.site-mega-about__more:focus-visible,
.site-mega-service__more:hover,
.site-mega-service__more:focus-visible {
  color: #ffffff;
  background: #2eb4c6;
  border-color: #2eb4c6;
}

.site-mega-about__more-icon,
.site-mega-service__more-icon {
  display: inline-flex;
  flex-shrink: 0;
  width: 12px;
  height: 12px;
}

.site-mega-about__more-icon svg,
.site-mega-service__more-icon svg {
  display: block;
  width: 100%;
  height: 100%;
}

body.is-mega-open {
  overflow: hidden;
}

/* ========== Main placeholder ========== */

.site-main {
  min-height: 60vh;
}

/* ========== Footer ========== */

.site-footer {
  position: relative;
  overflow: hidden;
  --footer-title-color: #333333;
  --footer-text-color: #333333;
  --footer-text-muted: #666666;
  color: var(--footer-text-color);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-color: #f2f3f5;
  background-image:
    linear-gradient(
      91.98deg,
      rgba(255, 255, 255, 0.88) 1.82%,
      rgba(255, 255, 255, 0.88) 98.54%
    ),
    url("../image/index/footer_bg.png");
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  pointer-events: none;
}

.site-footer__main {
  position: relative;
  z-index: 1;
  padding: var(--space-footer-main-y) 0 clamp(28px, 2.5vw, 48px);
}

.site-footer__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(280px, 32%) 1fr;
  gap: 48px 64px;
  align-items: start;
}

.site-footer__logo img {
  width: var(--logo-width);
  height: auto;
}

.site-footer__contact {
  margin-top: clamp(16px, 1.4583vw, 28px);
  font-size: var(--font-body);
  color: var(--footer-text-color);
  line-height: 1.75;
}

.site-footer__contact li + li {
  margin-top: 8px;
}

.site-footer__qr {
  margin-top: clamp(16px, 1.4583vw, 28px);
}

.site-footer__qr img {
  width: var(--qr-size);
  height: auto;
}

.site-footer__qr-caption {
  margin: 10px 0 0;
  font-size: var(--font-body);
  color: var(--footer-text-color);
}

.site-footer__links {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px 32px;
}

.site-footer__title {
  margin: 0 0 clamp(10px, 0.8333vw, 16px);
  font-size: var(--font-title);
  font-weight: 600;
  color: var(--footer-title-color);
  line-height: 1.4;
}

.site-footer__col ul {
  font-size: var(--font-body);
  color: var(--footer-text-muted);
  line-height: 1.75;
}

.site-footer__col a {
  color: var(--footer-text-muted);
}

.site-footer__col li + li {
  margin-top: 6px;
}

.site-footer__col a:hover,
.site-footer__col a:focus-visible {
  color: #0066b3;
}

.site-footer__bar {
  position: relative;
  z-index: 1;
  border-top: 1px solid #e0e0e0;
  background: transparent;
}

.site-footer__bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(12px, 1.25vw, 24px);
  min-height: clamp(48px, 3.3333vw, 64px);
  padding-top: clamp(12px, 0.8333vw, 16px);
  padding-bottom: clamp(12px, 0.8333vw, 16px);
  font-size: var(--font-body);
  color: var(--footer-text-muted);
}

.site-footer__copyright {
  margin: 0;
  flex: 1;
}

.site-footer__legal {
  margin: 0;
  flex-shrink: 0;
  white-space: nowrap;
}

.site-footer__legal a {
  color: var(--footer-text-muted);
}

.site-footer__legal a:hover,
.site-footer__legal a:focus-visible {
  color: #0066b3;
}

.site-footer__sep {
  margin: 0 12px;
  color: #999999;
}

/* ========== Responsive ========== */

@media (max-width: 1199px) {
  .site-footer__links {
    gap: clamp(16px, 2vw, 24px);
  }
}

@media (max-width: 991px) {
  .site-mega-panel {
    display: none !important;
  }

  body.is-mega-open {
    overflow: auto;
  }

  .site-nav__item--mega {
    display: flex;
    flex-direction: column;
  }

  .site-nav__mega-trigger::after {
    content: none;
    display: none;
  }

  .site-nav__submenu {
    display: grid;
    grid-template-rows: 0fr;
    width: 100%;
    margin: 0;
    padding: 0;
    background: #f7f8fa;
    border-top: 1px solid transparent;
    overflow: hidden;
    transition:
      grid-template-rows 0.4s cubic-bezier(0.4, 0, 0.2, 1),
      border-color 0.3s ease;
  }

  .site-nav__item--mega.is-submenu-open > .site-nav__submenu {
    grid-template-rows: 1fr;
    border-top-color: #eeeeee;
  }

  .site-nav__submenu-inner {
    min-height: 0;
    overflow: hidden;
  }

  .site-nav__submenu-list {
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .site-nav__submenu-item {
    border-bottom: 1px solid #eeeeee;
  }

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

  .site-nav__submenu-trigger,
  .site-nav__submenu-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    width: 100%;
    padding: 14px 16px 14px 20px;
    font-size: var(--font-nav-mobile);
    font-weight: 600;
    color: #333333;
    text-align: left;
    background: #f7f8fa;
    border: none;
    cursor: pointer;
    transition:
      background 0.2s ease,
      color 0.2s ease;
  }

  .site-nav__submenu-trigger:hover,
  .site-nav__submenu-trigger:focus-visible,
  .site-nav__submenu-link:hover,
  .site-nav__submenu-link:focus-visible {
    color: #0066b3;
    background: #eef2f6;
  }

  .site-nav__submenu-item.is-open > .site-nav__submenu-trigger {
    color: #0066b3;
    background: #e8eef4;
  }

  .site-nav__submenu-label {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
  }

  .site-nav__submenu-zh {
    font-size: var(--font-nav-mobile);
    font-weight: 600;
    color: inherit;
    line-height: 1.3;
  }

  .site-nav__submenu-en {
    font-size: 13px;
    font-weight: 500;
    color: #888888;
    line-height: 1.3;
  }

  .site-nav__submenu-item.is-open .site-nav__submenu-en {
    color: #0066b3;
  }

  .site-nav__submenu-chevron {
    flex-shrink: 0;
    width: 7px;
    height: 7px;
    border-right: 1.5px solid #bdbdbd;
    border-bottom: 1.5px solid #bdbdbd;
    transform: rotate(45deg);
    transition:
      transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
      border-color 0.25s ease;
  }

  .site-nav__submenu-item.is-open .site-nav__submenu-chevron {
    transform: rotate(-135deg);
    border-color: #0066b3;
  }

  .site-nav__submenu-sublist {
    max-height: 0;
    margin: 0;
    padding: 0;
    list-style: none;
    background: #ffffff;
    opacity: 0;
    overflow: hidden;
    transition:
      max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1),
      opacity 0.3s ease,
      padding 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .site-nav__submenu-item.is-open > .site-nav__submenu-sublist {
    max-height: 1200px;
    opacity: 1;
    padding: 4px 0 12px;
  }

  .site-nav__submenu-sublist a {
    display: block;
    padding: 10px 16px 10px 32px;
    font-size: var(--font-body);
    font-weight: 400;
    color: #666666;
    line-height: 1.5;
    border-top: 1px solid #f3f3f3;
    transition: color 0.2s ease;
  }

  .site-nav__submenu-sublist a:hover,
  .site-nav__submenu-sublist a:focus-visible {
    color: #0066b3;
  }

  .site-nav__submenu-sublist a.is-highlight {
    font-weight: 600;
    color: #00c4d0;
  }

  .site-nav__submenu-cta {
    padding: 16px 20px 20px;
    background: #f7f8fa;
    border-top: 1px solid #eeeeee;
  }

  .site-nav__submenu-cta .home-hero__btn {
    width: 100%;
    justify-content: center;
  }

  .site-mega-solution__layout {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .site-mega-solution__cols {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .site-mega-product__grid {
    grid-template-columns: 1fr;
    padding-bottom: 32px;
  }

  .site-mega-about__grid,
  .site-mega-service__grid {
    grid-template-columns: 1fr;
  }

  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 999;
    width: min(320px, 85vw);
    height: 100vh;
    height: 100dvh;
    flex: none;
    flex-direction: column;
    justify-content: flex-start;
    padding: 88px 32px 32px;
    background: #ffffff;
    box-shadow: -4px 0 24px rgba(0, 0, 0, 0.12);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    overflow-y: auto;
  }

  .site-nav.is-open {
    transform: translateX(0);
  }

  .site-nav__list {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
  }

  .site-nav__item {
    width: 100%;
    border-bottom: 1px solid #eeeeee;
  }

  .site-nav__link {
    display: block;
    width: 100%;
    padding: clamp(12px, 3.2vw, 16px) 0;
    font-size: var(--font-nav-mobile);
  }

  .site-nav__link.site-nav__mega-trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    min-height: 48px;
    padding-top: clamp(12px, 3.2vw, 16px);
    padding-bottom: clamp(12px, 3.2vw, 16px);
  }

  .site-nav__mega-chevron {
    display: block;
    flex-shrink: 0;
    align-self: center;
    width: 7px;
    height: 7px;
    margin-left: auto;
    margin-top: 0;
    border-right: 1.5px solid #bdbdbd;
    border-bottom: 1.5px solid #bdbdbd;
    transform: rotate(45deg);
    transition:
      transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
      border-color 0.25s ease;
  }

  .site-nav__item--mega.is-submenu-open .site-nav__mega-chevron {
    transform: rotate(-135deg);
    border-color: #0066b3;
  }

  .site-logo {
    flex: 1;
    min-width: 0;
  }

  .site-header.is-search-open .site-logo {
    flex: 0 1 auto;
    max-width: 42%;
  }

  .site-header.is-search-open .site-nav-toggle {
    display: none;
  }

  .site-search-dropdown__offset {
    padding-left: 0;
    padding-right: 0;
  }

  .site-search-dropdown {
    padding: 4px 0 28px;
  }

  .site-tools {
    margin-left: 0;
    gap: 12px;
    flex-shrink: 0;
  }

  .site-tools__lang {
    display: none;
  }

  .site-nav__extras {
    display: block;
    margin-top: auto;
    padding-top: 24px;
    border-top: 1px solid #eeeeee;
  }

  .site-nav__lang-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 0;
    font-size: var(--font-nav-mobile);
    font-weight: 600;
    color: #333333;
    transition: color 0.2s ease;
  }

  .site-nav__lang-btn:hover,
  .site-nav__lang-btn:focus-visible {
    color: #0066b3;
  }

  .site-nav__lang-btn img {
    width: var(--icon-size);
    height: var(--icon-size);
  }

  .site-nav-toggle {
    display: flex;
    flex-shrink: 0;
    margin-left: 0;
    z-index: 1001;
  }

  .site-nav-overlay {
    display: block;
  }

  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .site-footer__links {
    display: none;
  }
}

@media (max-width: 767px) {
  .site-footer__bar-inner {
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
  }

  .site-footer__legal {
    white-space: normal;
  }
}

/* ========== Float Sidebar ========== */

.float-sidebar {
  position: fixed;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 900;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.float-sidebar__btn {
  display: block;
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
  line-height: 0;
  transition: opacity 0.2s ease;
}

.float-sidebar__btn:hover {
  opacity: 0.85;
}

.float-sidebar__btn img {
  width: 42px;
  height: 42px;
}

@media (max-width: 991px) {
  .float-sidebar {
    display: none;
  }
}

@media (max-width: 767px) {
  .site-header__inner {
    gap: 10px;
  }

  .site-search-panel__form {
    gap: 10px;
    padding-bottom: 8px;
  }

  .site-search-panel__actions {
    gap: 10px;
  }

  .site-search-panel__submit,
  .site-search-panel__close {
    width: 24px;
    height: 24px;
  }

  .site-search-panel__close {
    font-size: 24px;
  }
}

@media (max-width: 480px) {
  .float-sidebar__btn img {
    width: 38px;
    height: 38px;
  }
}