/**
 * 润通锌业 H5 静态演示页：现代工业 B2B 视觉系统（纸感底 + 深墨字 + 企业蓝点缀）。
 * 与 `.impeccable.md` 中 Design Context 对齐，避免霓虹渐变与模板化卡片墙。
 */

:root {
  --rt-ink: #0c1a2e;
  --rt-ink-muted: #3d4f66;
  --rt-ink-soft: #5c6d82;
  --rt-paper: #faf7f2;
  --rt-paper-2: #f3efe8;
  --rt-surface: #ffffff;
  --rt-brand: #0f4c81;
  --rt-brand-deep: #0a2e57;
  --rt-line: rgba(12, 26, 46, 0.1);
  --rt-shadow: 0 18px 48px rgba(8, 24, 42, 0.08);
  --rt-radius-lg: 12px;
  --rt-radius-md: 8px;
  --rt-radius-pill: 999px;
  --rt-font-sans: 'Noto Sans SC', 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  --rt-font-display: 'Noto Serif SC', 'Noto Sans SC', 'PingFang SC', serif;
  --rt-max: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--rt-font-sans);
  color: var(--rt-ink);
  background: radial-gradient(1200px 600px at 10% -10%, rgba(15, 76, 129, 0.06), transparent 55%),
    linear-gradient(180deg, var(--rt-paper) 0%, var(--rt-paper-2) 100%);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

/**
 * 键盘用户：跳到主内容（符合 PRODUCT 移动可用与可访问性）
 */
.skip-link {
  position: absolute;
  left: 12px;
  top: 12px;
  z-index: 100;
  padding: 10px 16px;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--rt-ink);
  background: var(--rt-surface);
  border: 1px solid var(--rt-line);
  border-radius: var(--rt-radius-md);
  text-decoration: none;
  clip-path: inset(50%);
  width: 1px;
  height: 1px;
  overflow: hidden;
  white-space: nowrap;
}

.skip-link:focus,
.skip-link:focus-visible {
  clip-path: none;
  width: auto;
  height: auto;
  overflow: visible;
  outline: 3px solid rgba(15, 76, 129, 0.45);
  outline-offset: 2px;
}

/**
 * 全局焦点环：品牌色相，避免浏览器默认与纸感底冲突
 */
:focus-visible {
  outline: 3px solid rgba(15, 76, 129, 0.45);
  outline-offset: 2px;
}

.site-header :focus-visible,
.hero :focus-visible {
  outline-offset: 4px;
}

.container {
  width: min(100% - 40px, var(--rt-max));
  margin-inline: auto;
}

/* —— 顶栏 —— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(250, 247, 242, 0.88);
  border-bottom: 1px solid var(--rt-line);
}

.site-header__shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px 0;
  position: relative;
}

.brand-mark {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.brand {
  font-family: var(--rt-font-display);
  font-weight: 700;
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  letter-spacing: 0.04em;
  color: var(--rt-ink);
}

.brand-sub {
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  color: var(--rt-ink-soft);
  font-weight: 600;
  text-transform: none;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  justify-content: flex-end;
}

.nav a {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--rt-ink-muted);
  text-decoration: none;
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.nav a:hover {
  color: var(--rt-brand);
  border-bottom-color: rgba(15, 76, 129, 0.35);
}

.site-nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  border: none;
  border-radius: 12px;
  background: rgba(15, 76, 129, 0.08);
  cursor: pointer;
  flex-shrink: 0;
}

.site-nav-toggle:focus-visible {
  outline: 2px solid var(--rt-brand);
  outline-offset: 2px;
}

.site-nav-toggle__bar {
  display: block;
  width: 20px;
  height: 2px;
  margin: 0 auto;
  background: var(--rt-brand-deep);
  border-radius: 1px;
}

@media (max-width: 768px) {
  .site-nav-toggle {
    display: inline-flex;
  }

  .nav.nav--collapsible {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    flex-wrap: nowrap;
    gap: 4px;
    padding: 12px 14px 14px;
    margin: 0;
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid var(--rt-line);
    border-radius: var(--rt-radius-md);
    box-shadow: var(--rt-shadow);
    z-index: 80;
    justify-content: flex-start;
    max-height: min(72vh, 420px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .nav.nav--collapsible.is-open {
    display: flex;
  }

  .nav.nav--collapsible a {
    padding: 10px 12px;
    border-radius: 10px;
    border-bottom: 2px solid transparent;
  }

  .nav.nav--collapsible a:hover {
    background: rgba(15, 76, 129, 0.08);
    border-bottom-color: transparent;
  }

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

@media (min-width: 769px) {
  .site-nav-toggle {
    display: none !important;
  }

  .nav.nav--collapsible {
    display: flex !important;
  }
}

/* —— Hero —— */
.hero {
  position: relative;
  margin-top: 28px;
  border-radius: var(--rt-radius-lg);
  overflow: hidden;
  min-height: clamp(320px, 52vh, 520px);
  box-shadow: var(--rt-shadow);
}

.hero > img {
  width: 100%;
  height: 100%;
  min-height: clamp(320px, 52vh, 520px);
  object-fit: cover;
  filter: saturate(1.05) contrast(1.02);
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(6, 18, 32, 0.72) 0%, rgba(6, 18, 32, 0.38) 48%, rgba(6, 18, 32, 0.55) 100%);
  pointer-events: none;
}

.hero-content {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: clamp(24px, 5vw, 48px);
  max-width: min(640px, 92%);
}

.hero-eyebrow {
  display: inline-flex;
  align-self: flex-start;
  padding: 6px 14px;
  border-radius: var(--rt-radius-pill);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.95);
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.22);
  margin: 0 0 14px;
}

.hero h1 {
  font-family: var(--rt-font-display);
  font-weight: 700;
  font-size: clamp(1.55rem, 3.6vw, 2.35rem);
  line-height: 1.28;
  color: #fff;
  margin: 0 0 14px;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.25);
}

.hero-content > p:not(.hero-eyebrow) {
  margin: 0 0 22px;
  color: rgba(255, 255, 255, 0.92);
  font-size: clamp(0.92rem, 1.6vw, 1.05rem);
  max-width: 52ch;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  cursor: pointer;
  font-family: inherit;
  font-weight: 700;
  font-size: 0.92rem;
  border-radius: var(--rt-radius-pill);
  padding: 12px 28px;
  border: 1px solid transparent;
  transition: box-shadow 0.25s cubic-bezier(0.16, 1, 0.3, 1), transform 0.2s ease, border-color 0.2s ease,
    background-color 0.2s ease, color 0.2s ease;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: #fff;
  color: var(--rt-brand-deep);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.18);
}

.btn-primary:hover {
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.22);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.45);
  backdrop-filter: blur(6px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.16);
}

.btn-ghost {
  background: transparent;
  color: var(--rt-brand);
  border-color: rgba(15, 76, 129, 0.35);
}

/* —— 区块卡片 —— */
.card {
  margin-top: 28px;
  padding: clamp(32px, 5vw, 48px);
  background: var(--rt-surface);
  border: none;
  border-radius: var(--rt-radius-lg);
  box-shadow: 0 4px 40px rgba(0, 0, 0, 0.03);
}

.section-head {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 10px;
}

.section-kicker {
  align-self: flex-start;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.22em;
  color: var(--rt-brand);
  background: rgba(15, 76, 129, 0.08);
  padding: 5px 12px;
  border-radius: var(--rt-radius-pill);
}

.title {
  font-family: var(--rt-font-display);
  font-size: clamp(1.25rem, 2.4vw, 1.55rem);
  font-weight: 700;
  margin: 0;
  color: var(--rt-ink);
}

.lede {
  margin: 10px 0 0;
  font-size: 0.98rem;
}

.muted {
  color: var(--rt-ink-muted);
  font-size: 0.92rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.feature {
  padding: 18px 18px 20px;
  border-radius: var(--rt-radius-md);
  border: 1px solid var(--rt-line);
  background: linear-gradient(180deg, #fff, #faf8f5);
}

.feature__title {
  font-size: 1.02rem;
  margin: 0 0 8px;
  color: var(--rt-brand-deep);
}

/* —— 产品筛选与网格 —— */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 14px;
}

.filter {
  cursor: pointer;
  font-family: inherit;
  font-weight: 700;
  font-size: 0.82rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 8px 18px;
  border-radius: var(--rt-radius-pill);
  border: 1px solid var(--rt-line);
  background: #fff;
  color: var(--rt-ink-muted);
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.filter.active,
.filter.is-active {
  background: var(--rt-brand);
  color: #fff;
  border-color: var(--rt-brand);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 18px;
}

.product-tile {
  cursor: pointer;
  border-radius: var(--rt-radius-md);
  overflow: hidden;
  border: 1px solid var(--rt-line);
  background: #fff;
  transition: border-color 0.25s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.product-tile:hover {
  box-shadow: 0 12px 32px rgba(8, 24, 42, 0.08);
  transform: translateY(-4px);
  border-color: transparent;
}

.product-tile img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  background: #0b1220;
}

.tile-body {
  padding: 16px 18px 18px;
}

.tile-body h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
  color: var(--rt-ink);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.tag {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--rt-radius-pill);
  background: rgba(15, 76, 129, 0.1);
  color: var(--rt-brand);
}

/* —— 应用领域 —— */
.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin-top: 16px;
}

.apps-item {
  padding: 16px 18px;
  border-radius: var(--rt-radius-md);
  border: 1px solid var(--rt-line);
  background: #fff;
}

.apps-item h3 {
  margin: 0 0 8px;
  font-size: 1rem;
  color: var(--rt-brand-deep);
}

/* —— 证书 —— */
.certs .grid > div {
  text-align: center;
}

.cert-image {
  width: 100%;
  height: 160px;
  object-fit: cover;
  border-radius: var(--rt-radius-md);
  border: 1px solid var(--rt-line);
  cursor: zoom-in;
  transition: box-shadow 0.2s ease;
}

.cert-image:hover {
  box-shadow: var(--rt-shadow);
}

/* —— 联系 —— */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.form input,
.form textarea {
  font-family: inherit;
  font-size: 0.92rem;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--rt-line);
  background: #fdfcfa;
}

.form textarea {
  min-height: 120px;
  resize: vertical;
}

/* —— 流程 —— */
.flow-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin-top: 16px;
}

.flow-item {
  padding: 18px;
  border-radius: var(--rt-radius-md);
  border: 1px solid var(--rt-line);
  background: linear-gradient(180deg, #fff, #f8fafc);
}

.flow-step {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--rt-brand);
  margin-bottom: 8px;
}

.flow-item h3 {
  margin: 0 0 8px;
  font-size: 1rem;
}

/* —— 页脚 —— */
.footer {
  margin: 40px 0 56px;
  text-align: center;
  font-size: 0.82rem;
  color: var(--rt-ink-soft);
}

/* —— 悬浮 —— */
.floating-contact {
  position: fixed;
  right: 18px;
  bottom: max(22px, env(safe-area-inset-bottom, 0px));
  z-index: 60;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.floating-contact button {
  cursor: pointer;
  font-family: inherit;
  font-weight: 700;
  font-size: 0.8rem;
  min-height: 44px;
  padding: 10px 16px;
  border-radius: 12px;
  border: 1px solid var(--rt-line);
  background: rgba(255, 255, 255, 0.92);
  color: var(--rt-brand-deep);
  box-shadow: var(--rt-shadow);
  backdrop-filter: blur(10px);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.floating-contact button:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 40px rgba(8, 24, 42, 0.12);
}

/* —— 弹层 —— */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(8, 18, 32, 0.55);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 80;
  padding: 24px;
}

.modal.show {
  display: flex;
}

.modal img {
  max-width: min(920px, 96vw);
  max-height: 86vh;
  border-radius: var(--rt-radius-lg);
  box-shadow: var(--rt-shadow);
}

.detail-modal-content {
  background: #fff;
  border-radius: var(--rt-radius-lg);
  padding: 22px 24px;
  max-width: 520px;
  width: 100%;
  max-height: 86vh;
  overflow: auto;
  border: 1px solid var(--rt-line);
}

.spec-table {
  margin-top: 12px;
  border: 1px solid var(--rt-line);
  border-radius: 12px;
  overflow: hidden;
}

.spec-row {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 12px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--rt-line);
  font-size: 0.88rem;
}

.spec-row:last-child {
  border-bottom: 0;
}

.spec-key {
  color: var(--rt-ink-soft);
  font-weight: 600;
}

/* —— Toast —— */
.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%) translateY(120%);
  z-index: 90;
  padding: 12px 20px;
  border-radius: var(--rt-radius-pill);
  background: var(--rt-ink);
  color: #fff;
  font-size: 0.88rem;
  font-weight: 600;
  opacity: 0;
  transition: opacity 0.25s ease, transform 0.25s ease;
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast.error {
  background: #7c2d12;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .btn,
  .filter,
  .product-tile,
  .home-app-tile,
  .home-case-card,
  .floating-contact button {
    transition: none;
  }

  .home-app-tile:hover,
  .product-tile:hover,
  .home-case-card:hover {
    transform: none;
  }
}

/**
 * 全站壳层与润通顶栏：解除窄版 page-shell，对齐官网白底与品牌色链式导航。
 */
.page-shell {
  width: 100%;
  max-width: none;
  margin: 0;
  min-height: 100vh;
  background: #fff;
}

body {
  background: #fff;
}

.brand-mark {
  flex-direction: row;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
  min-width: 0;
}

.brand-mark__text {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.brand-mark__logo {
  width: 44px;
  height: 44px;
  object-fit: contain;
  flex-shrink: 0;
}

.brand-mark .brand {
  color: var(--rt-brand);
}

.surface-muted {
  background: linear-gradient(180deg, #faf7f2 0%, #f3efe8 100%);
  padding: clamp(32px, 4vw, 56px) 0;
  margin-top: 0;
}

.main-stack {
  padding-bottom: 72px;
}

.site-footer {
  border-top: none;
  padding: clamp(28px, 4vw, 44px) 0 36px;
  margin-top: 8px;
  text-align: left;
  font-size: 0.82rem;
  color: rgba(248, 250, 252, 0.88);
  background: linear-gradient(180deg, #0f172a 0%, #0b1220 100%);
}

.site-footer .container {
  max-width: min(100% - 40px, var(--rt-max));
}

.filters a.filter {
  text-decoration: none;
}

.hero .btn-row a.btn {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.grid a.product-tile {
  text-decoration: none;
  color: inherit;
}

.floating-contact a.floating-contact__link {
  cursor: pointer;
  font-family: inherit;
  font-weight: 700;
  font-size: 0.8rem;
  min-height: 44px;
  padding: 10px 16px;
  border-radius: 12px;
  border: 1px solid var(--rt-line);
  background: rgba(255, 255, 255, 0.92);
  color: var(--rt-brand-deep);
  box-shadow: var(--rt-shadow);
  backdrop-filter: blur(10px);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  text-decoration: none;
  text-align: center;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.floating-contact a.floating-contact__link:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 40px rgba(8, 24, 42, 0.12);
}

.site-footer__extra {
  margin: 18px 0 0;
  font-size: 0.88rem;
  text-align: center;
  color: rgba(226, 232, 240, 0.85);
}

.site-footer__extra a {
  color: #bfdbfe;
  font-weight: 600;
  text-decoration: none;
  padding: 6px 4px;
  border-radius: 6px;
}

.site-footer__extra a:hover {
  text-decoration: underline;
  color: #e0f2fe;
}

.site-footer__sep {
  margin: 0 8px;
  color: rgba(148, 163, 184, 0.9);
}

@media (max-width: 899px) {
  .rt-tabbar {
    display: flex;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    transform: none;
    width: 100%;
    max-width: none;
    z-index: 55;
    margin: 0;
    padding: 8px 10px calc(8px + env(safe-area-inset-bottom, 0px));
    gap: 6px;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(14px);
    border-top: 1px solid var(--rt-line);
    box-shadow: 0 -10px 28px rgba(8, 24, 42, 0.07);
    justify-content: space-around;
  }

  .rt-tabbar__item {
    flex: 1;
    max-width: 20%;
    border-radius: 10px;
    font-size: 0.68rem;
    font-weight: 700;
    padding: 8px 2px;
    color: var(--rt-ink-muted);
    background: transparent;
    border: 1px solid transparent;
    text-decoration: none;
    text-align: center;
    line-height: 1.25;
  }

  .rt-tabbar__item--active {
    background: rgba(15, 76, 129, 0.12);
    color: var(--rt-brand);
    border-color: rgba(15, 76, 129, 0.22);
  }

  .rt-page-product {
    padding-bottom: calc(76px + env(safe-area-inset-bottom, 0px));
  }

  body:has(.rt-tabbar) .floating-contact {
    bottom: calc(56px + env(safe-area-inset-bottom, 0px));
  }
}

@media (min-width: 900px) {
  .rt-tabbar {
    display: none !important;
  }
}

.rt-wrap--stack {
  padding-top: 20px;
  padding-bottom: 48px;
}

.rt-content--premium {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--rt-ink-muted);
}

.rt-content--premium p {
  margin: 0 0 14px;
}

.rt-pager--premium {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin: 28px 0 12px;
}

.rt-search--premium {
  margin-top: 20px;
}

.rt-product-hero {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
  margin-bottom: 24px;
}

@media (min-width: 768px) {
  .rt-product-hero {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    align-items: start;
  }
}

.rt-product-hero .rt-cover {
  width: 100%;
  max-height: 360px;
  object-fit: cover;
  border-radius: var(--rt-radius-md);
  border: 1px solid var(--rt-line);
}

.rt-product-hero__meta .rt-detail-hero__title {
  margin: 0 0 10px;
  font-size: clamp(1.35rem, 2.5vw, 1.75rem);
  color: var(--rt-ink);
}

.rt-product-hero__meta .rt-detail-hero__desc,
.rt-product-hero__meta .rt-detail-hero__spec {
  margin: 0 0 8px;
  color: var(--rt-ink-soft);
  font-size: 0.92rem;
}

.rt-detail-wrap--premium .rt-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 24px 0 8px;
}

.rt-detail-wrap--premium .rt-actions .btn {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.rt-about-body {
  padding-bottom: 48px;
}

/** 公司简介富文本：画册对齐版（与 ay_content 中 HTML 结构配套） */
.rt-about-rich h2 {
  font-family: var(--rt-font-display);
  font-size: clamp(1.15rem, 2.2vw, 1.35rem);
  font-weight: 800;
  color: var(--rt-ink);
  margin: 2rem 0 0.75rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--rt-line);
}

.rt-about-rich h2:first-of-type {
  margin-top: 1.25rem;
}

.rt-about-rich p,
.rt-about-rich li {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--rt-ink-muted);
}

.rt-about-rich ul {
  margin: 0.5rem 0 1rem;
  padding-left: 1.25rem;
}

.rt-about-rich li {
  margin-bottom: 0.45rem;
}

.rt-about-lead {
  font-size: 1.02rem;
  line-height: 1.8;
  color: var(--rt-ink);
}

.rt-about-figure {
  margin: 1.75rem 0;
  border-radius: var(--rt-radius-lg);
  overflow: hidden;
  border: 1px solid var(--rt-line);
  box-shadow: var(--rt-shadow);
  background: var(--rt-surface);
}

.rt-about-figure img {
  width: 100%;
  height: auto;
  display: block;
}

.rt-about-figure figcaption {
  padding: 10px 14px 12px;
  font-size: 0.82rem;
  background: var(--rt-paper);
}

.rt-about-note {
  margin-top: 2rem;
  padding: 12px 14px;
  border-radius: var(--rt-radius-md);
  background: rgba(15, 76, 129, 0.06);
  border: 1px solid rgba(15, 76, 129, 0.12);
}

/**
 * 内页全局统一：与首页同一套圆角、阴影、品牌色与桌面字号（覆盖 runtong.css 中基于 rpx 的缩放）。
 * `.rt-main` 与跳过链接 `#main-content` 对应，键盘聚焦时保留可见轮廓。
 */
.rt-main:focus {
  outline: none;
}

.rt-main:focus-visible {
  outline: 3px solid color-mix(in oklch, var(--rt-brand) 55%, transparent);
  outline-offset: 6px;
}

.rt-wrap,
.rt-wrap--stack {
  padding: clamp(16px, 2.5vw, 28px) 0 40px;
  min-height: auto;
}

.rt-detail-wrap {
  padding: clamp(16px, 2.5vw, 24px) 0 48px;
  min-height: auto;
  gap: 18px;
}

.rt-detail-wrap--premium {
  padding-bottom: 32px;
}

.rt-breadcrumb {
  font-size: 0.82rem;
  color: var(--rt-ink-soft);
  margin: 0 0 18px;
  line-height: 1.5;
}

.rt-breadcrumb__label {
  font-weight: 600;
  color: var(--rt-ink-muted);
}

.rt-breadcrumb a {
  color: var(--rt-brand);
  text-decoration: none;
  font-weight: 600;
}

.rt-breadcrumb a:hover {
  text-decoration: underline;
}

.rt-block-hero,
.rt-block-hero--slate,
.rt-block-hero--cert {
  border-radius: var(--rt-radius-lg);
  padding: clamp(20px, 3vw, 28px);
  box-shadow: var(--rt-shadow);
  background: linear-gradient(120deg, var(--rt-brand-deep) 0%, var(--rt-brand) 52%, #143d66 100%);
  margin-bottom: 8px;
}

.rt-block-hero__title {
  font-size: clamp(1.2rem, 2.4vw, 1.55rem);
  font-weight: 700;
}

.rt-block-hero__desc {
  font-size: 0.95rem;
  line-height: 1.65;
  max-width: 56ch;
}

.rt-detail-card {
  border-radius: var(--rt-radius-md);
  border: 1px solid var(--rt-line);
  box-shadow: 0 8px 28px rgba(8, 24, 42, 0.05);
  padding: clamp(18px, 2.2vw, 24px);
  background: var(--rt-surface);
}

.rt-detail-card__title,
.rt-contact-card__title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--rt-ink);
}

.rt-detail-card__text,
.rt-contact-card__text {
  font-size: 0.95rem;
  color: var(--rt-ink-muted);
  line-height: 1.75;
}

.rt-contact-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: 1fr;
}

@media (min-width: 880px) {
  .rt-contact-grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

.rt-news-card {
  cursor: pointer;
  border-radius: var(--rt-radius-md);
  border: 1px solid var(--rt-line);
  box-shadow: 0 8px 24px rgba(8, 24, 42, 0.04);
  padding: 18px 20px;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

a.rt-news-card:hover {
  border-color: color-mix(in oklch, var(--rt-brand) 28%, var(--rt-line));
  box-shadow: var(--rt-shadow);
  transform: translateY(-2px);
}

.rt-news-card__category {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--rt-brand);
}

.rt-news-card__category::before {
  content: none;
}

.rt-news-card__title {
  font-size: 1.05rem;
  color: var(--rt-ink);
}

.rt-news-card__desc {
  font-size: 0.92rem;
  color: var(--rt-ink-muted);
}

.rt-news-card__date,
.rt-news-card__more {
  font-size: 0.82rem;
}

.rt-tabs {
  gap: 10px;
  margin: 18px 0 14px;
}

.rt-tabs__item {
  cursor: pointer;
  font-family: inherit;
  border-radius: var(--rt-radius-pill);
  min-height: 44px;
  padding: 10px 20px;
  font-size: 0.84rem;
  font-weight: 700;
  border: 1px solid var(--rt-line);
  background: #fff;
  color: var(--rt-ink-muted);
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.rt-tabs__item--active {
  background: var(--rt-brand);
  border-color: var(--rt-brand);
  color: #fff;
}

.rt-tab-panels {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.rt-list {
  gap: 14px;
}

.rt-pager .rt-pager__btn,
.rt-pager--premium .rt-pager__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: var(--rt-radius-pill);
  padding: 8px 16px;
  font-size: 0.82rem;
  font-weight: 600;
  border: 1px solid var(--rt-line);
  color: var(--rt-brand);
  background: #fff;
  text-decoration: none;
}

.rt-pager .rt-pager__btn:hover {
  border-color: var(--rt-brand);
  background: rgba(15, 76, 129, 0.06);
}

.rt-pager .page-numbar a,
.rt-pager .page-numbar span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: var(--rt-radius-pill);
  min-width: 2.25rem;
  padding: 8px 12px;
  font-size: 0.82rem;
  border: 1px solid var(--rt-line);
  color: var(--rt-brand);
  background: #fff;
}

.rt-pager .page-numbar span.page-current,
.rt-pager .page-numbar .active {
  background: var(--rt-brand);
  color: #fff;
  border-color: var(--rt-brand);
}

.rt-search__input {
  min-height: 44px;
  border-radius: 12px;
  border: 1px solid var(--rt-line);
  font-size: 0.95rem;
  padding: 0 14px;
}

.rt-search__btn {
  border-radius: var(--rt-radius-pill);
  background: var(--rt-brand);
  color: #fff;
  font-weight: 700;
  font-size: 0.88rem;
  border: none;
  min-height: 44px;
  padding: 0 22px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.rt-search__btn:hover {
  filter: brightness(1.05);
}

.rt-article-card {
  padding: clamp(22px, 3vw, 32px);
}

.rt-article-card__title {
  text-align: left;
  margin: 0 0 10px;
  font-size: clamp(1.25rem, 2.4vw, 1.55rem);
}

.rt-article-card__meta {
  margin: 0 0 20px;
  font-size: 0.88rem;
}

.rt-article-card__body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--rt-radius-md);
}

.rt-apps-grid {
  margin-top: 8px;
}

.rt-app-tile {
  min-height: 140px;
}

.rt-app-tile .tile-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.rt-app-tile__tag {
  margin: 0;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  color: var(--rt-brand);
}

.rt-app-tile__cta {
  margin-top: auto;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--rt-brand);
}

.rt-msg-form label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--rt-ink-muted);
}

.rt-msg-form input,
.rt-msg-form textarea {
  font-family: inherit;
}

.rt-page-prolist .section-head .title {
  margin: 0;
}

/**
 * 首页：整页浅色带（与 `.surface-muted` 交替，形成纵向节奏）
 */
.surface-plain {
  background: var(--rt-surface);
  padding: clamp(32px, 4vw, 56px) 0;
}

.section-head--row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px 24px;
}

.text-link {
  cursor: pointer;
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--rt-brand);
  text-decoration: none;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 6px 4px;
}

.text-link:hover {
  color: var(--rt-brand-deep);
  text-decoration: underline;
}

/**
 * 首页应用领域：上图下文，标题压在图片底部渐变上（非渐变文字）
 */
.home-apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 8px;
}

.home-app-tile {
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  border-radius: var(--rt-radius-md);
  overflow: hidden;
  border: 1px solid var(--rt-line);
  background: #fff;
  transition: border-color 0.22s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.22s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
}

.home-app-tile:hover {
  box-shadow: 0 14px 36px rgba(8, 24, 42, 0.1);
  transform: translateY(-3px);
  border-color: transparent;
}

.home-app-tile__media {
  position: relative;
  aspect-ratio: 16 / 10;
  background: #0b1220;
}

.home-app-tile__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.home-app-tile__label {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 14px 16px 12px;
  font-size: 1rem;
  font-weight: 700;
  color: #f4f7fb;
  background: linear-gradient(180deg, transparent, rgba(10, 20, 36, 0.78));
}

.home-app-tile__syn {
  margin: 0;
  padding: 14px 16px 16px;
  font-size: 0.88rem;
  line-height: 1.55;
}

/**
 * 首页三栏资讯：缩略图 + 标题 + 摘要（与产品宫格形成不同版式）
 */
.home-news-block {
  padding-bottom: 28px;
}

.home-news-triptych {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(18px, 3vw, 32px);
  margin-top: 8px;
}

@media (max-width: 960px) {
  .home-news-triptych {
    grid-template-columns: 1fr;
  }
}

.home-news-col__title {
  font-family: var(--rt-font-display);
  font-size: 1.05rem;
  margin: 0 0 14px;
  color: var(--rt-brand-deep);
}

.home-news-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.home-news-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 12px;
  align-items: start;
  text-decoration: none;
  color: inherit;
  padding: 10px 8px;
  border-radius: var(--rt-radius-md);
  min-height: 44px;
  cursor: pointer;
  transition: background 0.2s ease;
}

.home-news-item:hover {
  background: rgba(15, 76, 129, 0.06);
}

.home-news-item img {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: 8px;
  background: #e8edf3;
}

.home-news-item__body {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.home-news-item__t {
  font-weight: 700;
  font-size: 0.92rem;
  line-height: 1.35;
}

.home-news-item__sum {
  font-size: 0.82rem;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.section-actions {
  margin: 24px 0 0;
  display: flex;
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: 12px;
}

/**
 * 首页底栏转化：品牌色满宽条，正文用浅青白保证对比度
 */
.home-prefooter {
  background: var(--rt-brand);
  color: #e8f1fa;
  padding: clamp(28px, 4vw, 48px) 0;
}

.home-prefooter__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px 32px;
}

.home-prefooter__title {
  font-family: var(--rt-font-display);
  font-size: clamp(1.2rem, 2.2vw, 1.45rem);
  font-weight: 700;
  margin: 0 0 10px;
  color: #f7fafc;
}

.home-prefooter__lede {
  margin: 0 0 12px;
  max-width: 52ch;
  font-size: 0.95rem;
  line-height: 1.65;
  color: rgba(231, 240, 248, 0.92);
}

.home-prefooter__contact {
  margin: 0;
  font-size: 0.9rem;
}

.home-prefooter__tel {
  color: #fff;
  font-weight: 700;
  text-decoration: none;
}

.home-prefooter__tel:hover {
  text-decoration: underline;
}

.home-prefooter__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.home-prefooter__btn {
  cursor: pointer;
  border: none;
  font-family: inherit;
  font-weight: 700;
  font-size: 0.88rem;
  min-height: 44px;
  padding: 10px 22px;
  border-radius: var(--rt-radius-pill);
  background: #f4f7fb;
  color: var(--rt-brand-deep);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease, color 0.2s ease;
}

.home-prefooter__btn:hover {
  background: #fff;
}

.home-prefooter__btn--ghost {
  background: transparent;
  color: #f0f6fc;
  border: 1px solid rgba(240, 246, 252, 0.45);
}

.home-prefooter__btn--ghost:hover {
  background: rgba(255, 255, 255, 0.12);
}

/* —— 顶栏（对齐 pb2602 类模板：搜索 + 热线） —— */
.site-topbar {
  background: linear-gradient(90deg, rgba(15, 76, 129, 0.08), rgba(10, 46, 87, 0.04));
  border-bottom: 1px solid var(--rt-line);
  font-size: 0.82rem;
}

.site-topbar__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 20px;
  padding: 8px 0;
}

.site-topbar__muted {
  color: var(--rt-ink-soft);
  font-weight: 600;
}

.site-topbar__links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 20px;
}

.site-topbar__links a {
  color: var(--rt-ink-muted);
  font-weight: 600;
  text-decoration: none;
}

.site-topbar__links a:hover {
  color: var(--rt-brand);
}

.site-topbar__tel {
  color: var(--rt-brand-deep);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* —— 首屏四宫格承诺（参考机械设备模板「品质/定制」信息密度） —— */
.home-usp {
  padding: clamp(28px, 4vw, 44px) 0;
}

.home-usp-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(16px, 2.5vw, 28px);
}

@media (max-width: 960px) {
  .home-usp-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 520px) {
  .home-usp-grid {
    grid-template-columns: 1fr;
  }
}

.home-usp-item {
  background: var(--rt-surface);
  border: 1px solid var(--rt-line);
  border-radius: var(--rt-radius-lg);
  padding: 20px 18px 22px;
  box-shadow: var(--rt-shadow);
}

/* —— 首屏 Hero：正文区底部轻量色晕（不遮挡主图，提升层次） —— */
.hero.hero--lift .hero-content {
  isolation: isolate;
}

.hero.hero--lift .hero-content::before {
  content: '';
  position: absolute;
  inset: 35% -8% 0;
  background: radial-gradient(85% 70% at 50% 100%, rgba(15, 76, 129, 0.28), transparent 72%);
  opacity: 0.55;
  pointer-events: none;
  z-index: -1;
}

/* —— 首页 USP：弱肌理背景 + 图标 + 入场与悬停（尊重 prefers-reduced-motion） —— */
.home-usp--textured {
  background-image: repeating-linear-gradient(
    90deg,
    transparent 0,
    transparent 10px,
    rgba(15, 76, 129, 0.028) 10px,
    rgba(15, 76, 129, 0.028) 11px
  );
}

.home-usp-item {
  transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.28s cubic-bezier(0.16, 1, 0.3, 1),
    border-color 0.22s ease;
  animation: rt-home-usp-in 0.55s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.home-usp-item:nth-child(1) {
  animation-delay: 0.04s;
}

.home-usp-item:nth-child(2) {
  animation-delay: 0.1s;
}

.home-usp-item:nth-child(3) {
  animation-delay: 0.16s;
}

.home-usp-item:nth-child(4) {
  animation-delay: 0.22s;
}

@keyframes rt-home-usp-in {
  from {
    opacity: 0;
    transform: translateY(14px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .home-usp-item {
    animation: none;
  }

  .home-usp-item:hover {
    transform: none;
  }

  .home-usp-item:hover .home-usp-icon svg {
    transform: none;
    transition: none;
  }
}

.home-usp-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 44px rgba(8, 24, 42, 0.11);
  border-color: rgba(15, 76, 129, 0.22);
}

.home-usp-icon {
  display: block;
  margin-bottom: 12px;
}

.home-usp-icon svg {
  display: block;
  filter: drop-shadow(0 6px 12px rgba(8, 24, 42, 0.06));
  transition: transform 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

.home-usp-item:hover .home-usp-icon svg {
  transform: translateY(-1px);
}

.home-usp-item__t {
  margin: 0 0 8px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--rt-ink);
}

.home-usp-item__d {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.55;
}

.home-strength-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 8px 0 22px;
}

.home-strength-pill {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 14px;
  border-radius: var(--rt-radius-pill);
  background: rgba(15, 76, 129, 0.08);
  color: var(--rt-brand-deep);
  font-size: 0.86rem;
  font-weight: 700;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.22s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.22s ease;
}

.home-strength-pill::after {
  content: '\2192';
  margin-left: 6px;
  font-size: 0.82rem;
  opacity: 0;
  transform: translateX(-5px);
  transition: opacity 0.18s ease, transform 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

.home-strength-pill:hover {
  background: rgba(15, 76, 129, 0.14);
  border-color: rgba(15, 76, 129, 0.2);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(8, 24, 42, 0.08);
}

.home-strength-pill:hover::after {
  opacity: 1;
  transform: translateX(0);
}

@media (prefers-reduced-motion: reduce) {
  .home-strength-pill,
  .home-strength-pill::after {
    transition: none;
  }

  .home-strength-pill:hover {
    transform: none;
  }
}

/* —— 产品中心：侧栏 + 主区（参考 pb2602 左侧分类） —— */
.home-products-layout {
  display: grid;
  grid-template-columns: minmax(0, 200px) minmax(0, 1fr);
  gap: clamp(18px, 3vw, 32px);
  align-items: start;
}

@media (max-width: 900px) {
  .home-products-layout {
    grid-template-columns: 1fr;
  }

  .home-products-side {
    order: 2;
  }

  .home-products-main {
    order: 1;
  }
}

.home-products-side {
  position: sticky;
  top: 88px;
  padding: 16px 14px;
  border-radius: var(--rt-radius-lg);
  border: 1px solid var(--rt-line);
  background: var(--rt-surface);
}

.home-products-side__h {
  margin: 0 0 10px;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--rt-ink-soft);
  text-transform: uppercase;
}

.home-products-side__all {
  display: block;
  margin-bottom: 12px;
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--rt-brand);
  text-decoration: none;
}

.home-products-side__all:hover {
  text-decoration: underline;
}

.home-products-side__nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.home-products-side__nav a {
  display: block;
  padding: 8px 6px;
  border-radius: var(--rt-radius-md);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--rt-ink-muted);
  text-decoration: none;
}

.home-products-side__nav a:hover {
  background: rgba(15, 76, 129, 0.06);
  color: var(--rt-brand-deep);
}

.home-products-grid {
  margin-top: 8px;
}

/* —— 案例栅格（叠字条） —— */
.home-case-section {
  padding-top: 8px;
}

.home-case-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(12px, 2vw, 18px);
}

@media (max-width: 960px) {
  .home-case-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .home-case-grid {
    grid-template-columns: 1fr;
  }
}

.home-case-card {
  position: relative;
  display: block;
  border-radius: var(--rt-radius-lg);
  overflow: hidden;
  min-height: 200px;
  background: var(--rt-ink);
  box-shadow: var(--rt-shadow);
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.home-case-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 22px 50px rgba(8, 24, 42, 0.14);
}

.home-case-card img {
  width: 100%;
  height: 100%;
  min-height: 200px;
  object-fit: cover;
  opacity: 0.92;
}

.home-case-card__cap {
  position: absolute;
  inset: auto 0 0 0;
  padding: 16px 14px 18px;
  background: linear-gradient(180deg, transparent, rgba(8, 24, 42, 0.82));
  color: #f8fafc;
}

.home-case-card__t {
  display: block;
  font-weight: 800;
  font-size: 1rem;
  margin-bottom: 4px;
}

.home-case-card__sum {
  display: block;
  font-size: 0.82rem;
  color: rgba(248, 250, 252, 0.88);
  line-height: 1.45;
}

/* —— 定制流程 —— */
.home-process-section {
  padding-bottom: 8px;
}

.home-process {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: clamp(10px, 1.5vw, 16px);
}

@media (max-width: 1024px) {
  .home-process {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .home-process {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.home-process__step {
  background: var(--rt-surface);
  border: 1px solid var(--rt-line);
  border-radius: var(--rt-radius-lg);
  padding: 16px 12px 18px;
  text-align: center;
}

.home-process__n {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  margin-bottom: 8px;
  border-radius: 50%;
  background: var(--rt-brand);
  color: #fff;
  font-weight: 800;
  font-size: 0.85rem;
}

.home-process__lab {
  display: block;
  font-weight: 800;
  font-size: 0.92rem;
  color: var(--rt-ink);
  margin-bottom: 4px;
}

.home-process__sub {
  display: block;
  font-size: 0.78rem;
  color: var(--rt-ink-soft);
  line-height: 1.45;
}

/* —— 新闻三栏 —— */
.home-news-dual {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 2.5vw, 28px);
}

@media (max-width: 960px) {
  .home-news-dual {
    grid-template-columns: 1fr;
  }
}

.home-news-col__meta {
  margin: -4px 0 12px;
  font-size: 0.78rem;
  line-height: 1.45;
}

/* —— 页脚扩展（见 foot.html） —— */
.site-footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: clamp(20px, 3vw, 40px);
  text-align: left;
  margin-bottom: 18px;
}

@media (max-width: 720px) {
  .site-footer__grid {
    grid-template-columns: 1fr;
  }
}

.site-footer__brand {
  margin: 0 0 10px;
  font-family: var(--rt-font-display);
  font-weight: 800;
  font-size: 1.05rem;
  color: #f1f5f9;
}

.site-footer__addr,
.site-footer__row {
  margin: 0 0 8px;
  font-size: 0.88rem;
  color: rgba(241, 245, 249, 0.88);
  line-height: 1.55;
}

.site-footer__row a {
  color: #e2e8f0;
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

/* —— SEO/GEO：首页 / 技术百科 FAQ 版式 —— */
.home-faq-section {
  padding-top: clamp(12px, 2vw, 20px);
}

.home-faq {
  margin: 0;
  max-width: 860px;
}

.home-faq__q {
  margin: 1.15rem 0 0.4rem;
  font-weight: 800;
  font-size: 1rem;
  color: var(--rt-ink);
}

.home-faq__q:first-child {
  margin-top: 0;
}

.home-faq__a {
  margin: 0 0 0.75rem;
  padding: 12px 14px 12px 14px;
  border-radius: var(--rt-radius-md);
  border: 1px solid rgba(15, 76, 129, 0.1);
  background: rgba(15, 76, 129, 0.045);
}

.home-faq__a p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--rt-ink-muted);
  line-height: 1.65;
}

.home-faq__links {
  margin: 1.35rem 0 0;
  font-size: 0.88rem;
}

.home-faq__links a {
  font-weight: 700;
  color: var(--rt-brand);
  text-decoration: none;
}

.home-faq__links a:hover {
  text-decoration: underline;
}

.rt-productlist-geo-hint a {
  font-weight: 700;
  color: var(--rt-brand);
  text-decoration: none;
}

.rt-productlist-geo-hint a:hover {
  text-decoration: underline;
}