/* Site header — 全站默认透明，悬停/聚焦/滚离大图后显白底 */
.site-header {
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  z-index: 200;
  height: var(--header-height);
  background: transparent;
  border-bottom: 1px solid transparent;
  box-shadow: none;
  backdrop-filter: none;
  transition:
    transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    background 0.4s cubic-bezier(0.4, 0, 0.2, 1),
    border-color 0.4s cubic-bezier(0.4, 0, 0.2, 1),
    box-shadow 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.site-header:hover,
.site-header.is-solid,
.site-header:focus-within {
  background: rgba(255, 255, 255, 0.98);
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(8px);
}

.site-header.is-scroll-hidden {
  transform: translateY(-100%);
  pointer-events: none;
}

body:not([data-nav="home"]) #main {
  padding-top: var(--header-height);
}

body:not([data-nav="home"]) #main:has(> .page-hero:first-child),
body.page-main-hero-first:not([data-nav="home"]) #main {
  padding-top: 0;
}

/* 首页 / 内页大图：透明顶栏时使用浅色导航 */
body[data-nav="home"] .site-header:not(:hover):not(.is-solid):not(:focus-within) .site-logo,
body[data-nav="home"] .site-header:not(:hover):not(.is-solid):not(:focus-within) .site-logo:hover,
body:has(.page-hero) .site-header:not(:hover):not(.is-solid):not(:focus-within) .site-logo,
body:has(.page-hero) .site-header:not(:hover):not(.is-solid):not(:focus-within) .site-logo:hover {
  color: #fff;
}

body[data-nav="home"] .site-header:not(:hover):not(.is-solid):not(:focus-within) .nav-link,
body:has(.page-hero) .site-header:not(:hover):not(.is-solid):not(:focus-within) .nav-link {
  color: rgba(255, 255, 255, 0.92);
}

body[data-nav="home"] .site-header:not(:hover):not(.is-solid):not(:focus-within) .nav-link:hover,
body:has(.page-hero) .site-header:not(:hover):not(.is-solid):not(:focus-within) .nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.15);
}

body[data-nav="home"] .site-header:not(:hover):not(.is-solid):not(:focus-within) .nav-link.is-active,
body:has(.page-hero) .site-header:not(:hover):not(.is-solid):not(:focus-within) .nav-link.is-active {
  color: #fff;
  background: rgba(var(--color-primary-rgb), 0.45);
}

body[data-nav="home"] .site-header:not(:hover):not(.is-solid):not(:focus-within) .nav-toggle,
body:has(.page-hero) .site-header:not(:hover):not(.is-solid):not(:focus-within) .nav-toggle {
  border-color: rgba(255, 255, 255, 0.5);
  background: rgba(255, 255, 255, 0.12);
}

body[data-nav="home"] .site-header:not(:hover):not(.is-solid):not(:focus-within) .nav-toggle__bar,
body:has(.page-hero) .site-header:not(:hover):not(.is-solid):not(:focus-within) .nav-toggle__bar {
  background: #fff;
}

.site-logo,
.nav-link,
.nav-toggle {
  transition:
    color 0.35s ease,
    background 0.35s ease,
    border-color 0.35s ease,
    transform 0.25s ease;
}

.nav-link:hover {
  transform: translateY(-1px);
}

.site-header__inner {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  height: var(--header-height);
  gap: var(--space-3);
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
  justify-self: end;
}

.site-header__lang {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.site-header__lang-group {
  display: inline-flex;
  align-items: stretch;
  height: 40px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-bg);
}

.site-header__lang-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  padding: 0 var(--space-3);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  background: transparent;
  border: none;
  border-right: 1px solid var(--color-border);
  cursor: pointer;
  transition:
    color 0.2s ease,
    background 0.2s ease;
}

.site-header__lang-btn:last-child {
  border-right: none;
}

.site-header__lang-btn:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.site-header__lang-btn.is-active {
  color: #fff;
  background: var(--color-primary);
  font-weight: 600;
}

.site-header__lang-btn.is-active:hover {
  color: #fff;
  background: var(--color-primary);
}

body[data-nav="home"] .site-header:not(:hover):not(.is-solid):not(:focus-within) .site-header__lang-group,
body:has(.page-hero) .site-header:not(:hover):not(.is-solid):not(:focus-within) .site-header__lang-group {
  border-color: rgba(255, 255, 255, 0.45);
  background: rgba(255, 255, 255, 0.1);
}

body[data-nav="home"] .site-header:not(:hover):not(.is-solid):not(:focus-within) .site-header__lang-btn,
body:has(.page-hero) .site-header:not(:hover):not(.is-solid):not(:focus-within) .site-header__lang-btn {
  color: rgba(255, 255, 255, 0.9);
  border-right-color: rgba(255, 255, 255, 0.25);
}

body[data-nav="home"] .site-header:not(:hover):not(.is-solid):not(:focus-within) .site-header__lang-btn.is-active,
body:has(.page-hero) .site-header:not(:hover):not(.is-solid):not(:focus-within) .site-header__lang-btn.is-active {
  color: var(--color-primary);
  background: #fff;
}

.site-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--color-text);
}

.site-nav {
  min-width: 0;
  justify-self: center;
  display: flex;
  justify-content: center;
  position: relative;
}

.site-header__search {
  flex-shrink: 0;
  display: flex;
  flex-direction: row-reverse;
  flex-wrap: nowrap;
  align-items: center;
  position: relative;
}

.site-logo:hover {
  color: var(--color-primary);
}

.site-logo img {
  height: 40px;
  width: auto;
}

.site-header__search-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition:
    color 0.35s ease,
    background 0.35s ease,
    border-color 0.35s ease;
}

.site-header__search-toggle:hover {
  color: var(--color-primary);
  border-color: var(--color-primary-border);
  background: var(--color-primary-light);
}

.site-header__search-form {
  display: flex;
  align-items: center;
  overflow: hidden;
  width: 0;
  height: 40px;
  flex-shrink: 0;
  opacity: 0;
  transition:
    width 0.35s cubic-bezier(0.4, 0, 0.2, 1),
    opacity 0.25s ease,
    margin 0.35s ease;
  margin-right: 0;
}

.site-header__search.is-open .site-header__search-form {
  width: min(220px, 42vw);
  opacity: 1;
  margin-right: var(--space-2);
}

.site-header__search-input {
  width: 100%;
  min-width: 0;
  height: 40px;
  padding: 0 var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  color: var(--color-text);
  background: var(--color-bg);
}

.site-header__search-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(var(--color-primary-rgb), 0.15);
}

.site-header__search-input::placeholder {
  color: var(--color-text-muted);
}

body[data-nav="home"] .site-header:not(:hover):not(.is-solid):not(:focus-within) .site-header__search-toggle,
body:has(.page-hero) .site-header:not(:hover):not(.is-solid):not(:focus-within) .site-header__search-toggle {
  border-color: rgba(255, 255, 255, 0.5);
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

@media (max-width: 767px) {
  .site-header__inner {
    display: flex;
    flex-wrap: nowrap;
    justify-content: space-between;
    gap: var(--space-2);
  }

  .site-header__actions {
    order: 3;
    margin-left: auto;
  }

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

  .site-nav {
    display: flex;
    align-items: center;
    order: 2;
    flex: 0 1 auto;
    margin-left: auto;
    min-width: 0;
  }

  .site-header__search.is-open .site-header__search-form {
    position: absolute;
    right: 0;
    top: calc(100% + var(--space-2));
    width: min(280px, calc(100vw - var(--container-pad) * 2));
    opacity: 1;
    margin-right: 0;
    z-index: 220;
  }
}

.site-nav__list {
  display: none;
  gap: var(--space-1);
  align-items: stretch;
}

@media (min-width: 768px) {
  .site-nav__list {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
  }
}

@media (min-width: 768px) and (max-width: 1100px) {
  .site-logo__text {
    display: none;
  }
}

.site-nav__item {
  position: relative;
}

.site-nav__item-head {
  display: flex;
  align-items: center;
}

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

.nav-submenu {
  list-style: none;
  margin: 0;
  padding: 0;
}

@media (min-width: 768px) {
  .site-nav__item--has-sub .nav-link::after {
    content: "";
    display: inline-block;
    width: 0;
    height: 0;
    margin-left: 6px;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 5px solid currentColor;
    vertical-align: middle;
    opacity: 0.65;
    transition: transform 0.2s ease;
  }

  .site-nav__item--has-sub.is-submenu-visible .nav-link::after,
  .site-nav__item--has-sub:focus-within .nav-link::after {
    transform: rotate(180deg);
  }

  .site-nav__item--has-sub .nav-submenu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(6px);
    min-width: 168px;
    padding: var(--space-2);
    padding-top: calc(var(--space-2) + 6px);
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition:
      opacity 0.2s ease,
      transform 0.2s ease,
      visibility 0s linear 0.2s;
    z-index: 210;
  }

  /* 填补一级菜单与下拉之间的空隙，便于鼠标移入 */
  .site-nav__item--has-sub .nav-submenu::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 10px;
  }

  .site-nav__item--has-sub.is-submenu-visible .nav-submenu,
  .site-nav__item--has-sub:focus-within .nav-submenu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
    transition:
      opacity 0.2s ease,
      transform 0.2s ease,
      visibility 0s linear 0s;
  }

  .nav-submenu__link {
    display: block;
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    border-radius: var(--radius-sm);
    white-space: nowrap;
  }

  .nav-submenu__link:hover {
    color: var(--color-primary);
    background: var(--color-primary-light);
  }

  .nav-submenu__link--all {
    font-weight: 600;
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--space-1);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  }
}

@media (max-width: 767px) {
  .site-nav__list.is-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4);
    box-shadow: var(--shadow-md);
    gap: 0;
    max-height: calc(100vh - var(--header-height));
    overflow-y: auto;
  }

  @supports (height: 100dvh) {
    .site-nav__list.is-open {
      max-height: calc(100dvh - var(--header-height));
    }
  }
}

@media (max-width: 767px) {
  .site-nav__item-head {
    width: 100%;
  }

  .site-nav__item--has-sub .nav-link {
    flex: 1;
  }

  .nav-submenu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    margin-left: var(--space-1);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg);
    color: inherit;
  }

  .nav-submenu-toggle__icon {
    width: 10px;
    height: 10px;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: rotate(45deg);
    margin-top: -4px;
    transition: transform 0.2s ease;
  }

  .site-nav__item--has-sub.is-submenu-open .nav-submenu-toggle__icon {
    transform: rotate(-135deg);
    margin-top: 2px;
  }

  .site-nav__item--has-sub .nav-submenu {
    display: none;
    padding: var(--space-1) 0 var(--space-2) var(--space-3);
  }

  .site-nav__item--has-sub.is-submenu-open .nav-submenu {
    display: block;
  }

  .nav-submenu__link {
    display: block;
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    border-radius: var(--radius-sm);
  }

  .nav-submenu__link:hover {
    color: var(--color-primary);
    background: var(--color-primary-light);
  }

  .nav-submenu__link--all {
    font-weight: 600;
    color: var(--color-text);
  }
}

body[data-nav="home"] .site-header:not(:hover):not(.is-solid) .site-nav__list.is-open,
body:has(.page-hero) .site-header:not(:hover):not(.is-solid) .site-nav__list.is-open {
  background: rgba(255, 255, 255, 0.98);
}

body[data-nav="home"] .site-header:not(:hover):not(.is-solid) .site-nav__list.is-open .nav-link,
body:has(.page-hero) .site-header:not(:hover):not(.is-solid) .site-nav__list.is-open .nav-link {
  color: var(--color-text-secondary);
}

body[data-nav="home"] .site-header:not(:hover):not(.is-solid) .site-nav__list.is-open .nav-link.is-active,
body:has(.page-hero) .site-header:not(:hover):not(.is-solid) .site-nav__list.is-open .nav-link.is-active {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

body[data-nav="home"] .site-header:not(:hover):not(.is-solid) .site-nav__list.is-open .nav-submenu__link,
body:has(.page-hero) .site-header:not(:hover):not(.is-solid) .site-nav__list.is-open .nav-submenu__link {
  color: var(--color-text-secondary);
}

body[data-nav="home"] .site-header:not(:hover):not(.is-solid) .site-nav__list.is-open .nav-submenu-toggle,
body:has(.page-hero) .site-header:not(:hover):not(.is-solid) .site-nav__list.is-open .nav-submenu-toggle {
  border-color: var(--color-border);
  color: var(--color-text-secondary);
}

@media (min-width: 768px) {
  .site-nav__item + .site-nav__item {
    margin-left: var(--space-1);
  }
}

@media (max-width: 767px) {
  .site-nav__item + .site-nav__item {
    margin-top: var(--space-1);
  }
}

.nav-link {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  border-radius: var(--radius-sm);
}

@media (min-width: 768px) {
  .nav-link {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-base);
    white-space: nowrap;
  }
}

@media (min-width: 768px) and (max-width: 1100px) {
  .nav-link {
    padding: var(--space-2);
    font-size: var(--text-sm);
  }
}

.nav-link:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.nav-link.is-active {
  color: var(--color-primary);
  font-weight: 700;
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
}

@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }
}

.nav-toggle__bar {
  display: block;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
}

/* Site footer */
#site-footer,
.site-footer {
  width: 100%;
  display: block;
}

.site-footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  margin-top: 0;
  padding: 0;
}

.site-footer__topbar {
  height: 3px;
  background: var(--color-primary);
}

.site-footer__container {
  width: 100%;
  max-width: min(1400px, 96vw);
  margin-left: auto;
  margin-right: auto;
  padding: var(--space-7) var(--container-pad) var(--space-6);
  box-sizing: border-box;
}

.site-footer a {
  color: var(--color-footer-text);
  transition: color 0.2s ease, opacity 0.2s ease;
}

.site-footer a:hover {
  color: #fff;
  opacity: 1;
}

.site-footer__main {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  align-items: stretch;
}

.site-footer__brand-col,
.site-footer__contact-col,
.site-footer__nav-col,
.site-footer__qr-col {
  min-width: 0;
}

.site-footer__logo {
  display: inline-block;
  margin-bottom: var(--space-4);
}

.site-footer__logo-img {
  display: block;
  width: 180px;
  height: auto;
}

.site-footer__legal-block p {
  font-size: var(--text-xs);
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: 4px;
}

.site-footer__legal-block p:last-child {
  margin-bottom: 0;
}

.site-footer__contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: var(--text-sm);
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.88);
}

.site-footer__contact-list li {
  margin-bottom: var(--space-3);
}

.site-footer__contact-list li:last-child {
  margin-bottom: 0;
}

.site-footer__contact-list a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.site-footer__nav-groups {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

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

.site-footer__nav-title {
  font-size: var(--text-base);
  font-weight: 600;
  color: #fff;
  margin-bottom: var(--space-3);
}

.site-footer__nav-title a {
  color: inherit;
}

.site-footer__nav-title a:hover {
  color: #fff;
  opacity: 0.92;
}

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

.site-footer__nav-links li {
  margin-bottom: var(--space-2);
}

.site-footer__nav-links a {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.78);
}

.site-footer__nav-links a:hover {
  color: #fff;
}

.site-footer__qr {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.site-footer__qr img {
  width: 120px;
  height: 120px;
  padding: 6px;
  background: #fff;
  border-radius: var(--radius-sm);
  object-fit: contain;
}

.site-footer__qr-caption {
  margin-top: var(--space-3);
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.85);
}

@media (min-width: 640px) {
  .site-footer__nav-groups {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: var(--space-4);
  }
}

@media (min-width: 900px) {
  .site-footer__main {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-5) var(--space-6);
  }

  .site-footer__brand-col {
    flex: 0 1 200px;
    width: auto;
    min-width: 160px;
  }

  .site-footer__contact-col {
    flex: 0 1 280px;
    width: auto;
    min-width: 200px;
  }

  .site-footer__nav-col {
    flex: 1 1 280px;
    min-width: 0;
  }

  .site-footer__qr-col {
    flex: 0 0 130px;
    width: 130px;
    display: flex;
    justify-content: flex-end;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 20px;
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #fff;
}

.btn--ghost {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--ghost:hover {
  background: var(--color-primary-light);
}

/* Card */
.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card__media {
  aspect-ratio: 16 / 9;
  background: var(--color-bg-muted);
  overflow: hidden;
}

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

.card__body {
  padding: var(--space-4);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card__tag {
  font-size: var(--text-xs);
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.card__title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.card__title a {
  color: inherit;
}

.card__title a:hover {
  color: var(--color-primary);
}

.card__summary {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  flex: 1;
}

.card__meta {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-3);
}

/* 产品 / 新闻 / 解决方案列表 — 大尺寸卡片 */
.list-card-grid--large {
  gap: var(--space-6);
}

.list-card-grid--large .card__media {
  aspect-ratio: 4 / 3;
}

.list-card-grid--large .card__body {
  padding: var(--space-5) var(--space-6);
}

.list-card-grid--large .card__title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
}

.list-card-grid--large .card__summary {
  font-size: var(--text-base);
  line-height: 1.75;
}

.list-card-grid--large .card__meta {
  font-size: var(--text-sm);
  margin-top: var(--space-4);
}

.list-card-grid--large .card__tag {
  font-size: var(--text-sm);
}

.list-card-grid--large .tag {
  font-size: var(--text-sm);
  padding: 4px 10px;
}

.list-card-grid--large ul {
  font-size: var(--text-base) !important;
  line-height: 1.75;
  margin-top: var(--space-3) !important;
}

@media (min-width: 992px) {
  .list-card-grid--large.grid--2 {
    gap: var(--space-7);
  }
}

.tag {
  display: inline-block;
  padding: 2px 8px;
  font-size: var(--text-xs);
  border-radius: var(--radius-sm);
  background: var(--color-primary-light);
  color: var(--color-primary);
  margin-right: var(--space-2);
}

/* Rich HTML */
.rich-html {
  font-size: var(--text-base);
  line-height: 1.75;
}

.rich-html h2 {
  font-size: var(--text-lg);
  font-weight: 700;
  margin: var(--space-6) 0 var(--space-4);
  color: var(--color-text);
}

.rich-html p {
  margin-bottom: var(--space-4);
}

.rich-html img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin: var(--space-4) 0;
}

.rich-html ul {
  list-style: disc;
  padding-left: 1.5em;
  margin-bottom: var(--space-4);
}

.rich-html li {
  margin-bottom: var(--space-2);
}

/* Timeline */
.timeline {
  border-left: 2px solid var(--color-primary-border);
  padding-left: var(--space-5);
}

.timeline__item {
  position: relative;
  margin-bottom: var(--space-5);
}

.timeline__item::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--space-5) - 5px);
  top: 4px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-primary);
}

.timeline__year {
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-1);
}

/* 内页顶部大图 */
.page-hero {
  position: relative;
  width: 100%;
  padding-top: var(--header-height);
  min-height: calc(300px + var(--header-height));
  height: calc(clamp(300px, 48vw, 560px) + var(--header-height));
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: #152238;
  background-size: cover;
  background-position: center 30%;
  background-repeat: no-repeat;
}

.page-hero--products {
  background-image: url('../images/heroes/hero-products.jpg');
}

.page-hero--news {
  background-image: url('../images/heroes/hero-news.jpg');
}

.page-hero--solutions {
  background-image: url('../images/heroes/hero-solutions.jpg');
}

.page-hero--about {
  background-image: url('../images/heroes/hero-about.jpg');
}

.page-hero--jobs,
.page-hero--jobs-social,
.page-hero--jobs-benefits,
.page-hero--jobs-campus {
  background-image: url('../images/heroes/hero-about.jpg');
}

.page-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(15, 34, 56, 0.05) 0%,
    rgba(15, 34, 56, 0.35) 55%,
    rgba(15, 34, 56, 0.82) 100%
  );
}

.page-hero__inner {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-4) var(--container-pad);
  transform: translateY(calc(var(--header-height) * -0.15));
}

.page-hero__title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.02em;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.35);
}

.page-hero__desc {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.92);
  margin-top: var(--space-2);
  max-width: 40em;
  line-height: 1.6;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.3);
}

@media (min-width: 768px) {
  .page-hero {
    min-height: calc(380px + var(--header-height));
    height: calc(clamp(380px, 52vw, 620px) + var(--header-height));
    background-position: center 28%;
  }

  .page-hero__inner {
    padding: var(--space-5) var(--container-pad);
    transform: translateY(calc(var(--header-height) * -0.2));
  }

  .page-hero__title {
    font-size: var(--text-2xl);
  }

  .page-hero__desc {
    font-size: var(--text-base);
    margin-top: var(--space-3);
  }
}