.ro-page .ro-cmscard {
  display: flex;
  flex-direction: column;
  padding: 32px 26px;
  background: #fff;
  border: 1px solid var(--line);
  text-decoration: none;
  text-align: center;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.ro-page a.ro-cmscard:focus-visible {
  outline: 2px solid var(--pri);
  outline-offset: 2px;
}

.ro-page .ro-cmscard:hover {
  border-color: var(--pri);
  box-shadow: 0 12px 30px rgb(33 94 179 / 12%);
  transform: translateY(-4px);
}

/* 配图条:栏目管理上传后显示在卡片顶部(通栏出血) */
.ro-page .ro-cmscard .pic {
  display: block;
  margin: -32px -26px 20px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.ro-page .ro-cmscard .pic img {
  display: block;
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.ro-page .ro-cmscard h3 {
  margin-bottom: 12px;
  font-size: 19px;
  font-weight: 700;
  color: var(--head);
  transition: color 0.3s ease;
}

.ro-page .ro-cmscard:hover h3 {
  color: var(--pri);
}

.ro-page .ro-cmscard .rt {
  flex: 1;
  margin: 0;
  font-size: 16px;
  line-height: 2;
  color: var(--body);
}

.ro-page .ro-cmscard .more {
  display: inline-block;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--pri);
}

.ro-cards {
  /* 站点标准 CMS 卡片网格:三列,平板两列,手机单列 */
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

/* 冷冻机油页样式
 *
 * 视觉沿用原站语言：主色 #215eb3、中性色 #f2f2f2 / #ddd / #333 / #666、
 * 过渡统一 .3s–.5s ease、内容容器 1500px（与页头 .e_container-13 同宽，
 * 保证正文边缘与 logo、导航对齐）。
 *
 * 全部选择器限定在 .ro-page 作用域内，不会与原站的 bootstrap / global.css
 * 互相覆盖，也不会影响其他页面。
 */

/* 首屏主标题专用：思源黑体 Black（Noto Sans SC，SIL OFL 开源可商用），
   用 fontsource 包里 weight 900 的全量字体按页面标题用字做了 4 字子集，
   仅 1.5KB。unicode-range 保证标题以外的字符（及将来标题改字）自动回落
   系统黑体的 900 合成加粗，不会缺字。 */
@font-face {
  font-family: "RO Title Black";
  src: url("/fonts/ro-title-black.woff2") format("woff2");
  font-weight: 900;
  font-style: normal;
  font-display: swap;
  unicode-range: U+51B7, U+51BB, U+673A, U+6CB9;
}

.ro-page {
  --pri: #215eb3;
  --pri-dark: #1a4a8e;
  --pri-soft: #eaf1fa;
  --head: #333333;
  --body: #666666;
  --line: #dddddd;
  --alt: #f2f2f2;
  --shell: 1500px;

  color: var(--body);
  background: #fff;
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.8;
}

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

.ro-page h1,
.ro-page h2,
.ro-page h3,
.ro-page h4,
.ro-page p,
.ro-page dl,
.ro-page dd,
.ro-page figure {
  margin: 0;
}

.ro-page ul,
.ro-page ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.ro-page table {
  border-collapse: collapse;
}

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

.ro-page a {
  color: inherit;
  text-decoration: none;
  transition: color 0.3s ease;
}

.ro-page .shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- 内页 banner ----------
 * 骨架沿用原站内页横幅（整幅通栏、左侧中文主标题 + 英文副标题），
 * 视觉部分改用交付包首屏那个球体，纯 CSS 绘制，不依赖任何照片素材
 * （甲方至今未提供冷冻机油的实拍图，见需求确认单 C7）。
 * 球体配色由交付包的 #0c65ae 改为原站主色，冰蓝高光保留作为制冷主题的信号色。 */

.ro-page .ro-banner {
  position: relative;
  overflow: hidden;
  /* 背景图来自原站产品中心-特种油页「冷冻机油系列」栏目的配图，已本地化。
     遮罩与全站栏目横幅（rebrand.css 的 P_908 规则）同款参数，观感统一 */
  background:
    linear-gradient(100deg, rgba(6, 24, 38, .66) 8%, rgba(10, 37, 64, .32) 55%, rgba(10, 37, 64, .12) 100%),
    url("/media/3eef5209-77d0-4c88-9f4c-dac3a1814ed2.jpg") center / cover no-repeat;
  min-height: 720px;
  display: flex;
  align-items: center;
}

/* 球体视觉与车用油/工业油/特种油页的纯图横幅观感差异大，按需求先隐藏（DOM 保留，去 display:none 可恢复） */
.ro-page .ro-banner .ro-visual { display: none !important; }

.ro-page .ro-banner .shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr); /* 球体隐藏后单列 */
  gap: 40px;
  align-items: center;
  width: 100%;
}

/* 标题区：对齐车用油页首屏图上文字的观感——居中、大号、常规字重、无装饰 */
.ro-banner-info {
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
}

.ro-page .ro-banner .eyebrow {
  margin-bottom: 20px;
  font-family: "PingFang SC", "MiSans", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 3px;
  color: rgba(255, 255, 255, .78);
}

/* 主标题：对齐原站频道横幅（工业油 banner）的字风——特大特粗黑体、
   明显右斜（对参考图的字体分析结论：约 10~12° 斜切）、纯白。
   字面用思源黑体 Black 子集逼近「力黑」类商用字重；硬阴影增加厚重感，
   字距收紧让四个字挤成整块（参考分析给的参数：2px）。 */
.ro-page .ro-banner h1 {
  font-family: "RO Title Black", "PingFang SC", "MiSans", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
  font-size: 84px;
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: 2px;
  color: #ffffff;
  text-shadow: 4px 4px 0 rgba(0, 0, 0, 0.2);
  transform: skewX(-12deg);
}

.ro-page .ro-banner h1 span {
  display: inline-block;
  margin-left: 12px;
  font-size: 0.82em;
  font-weight: 400;
  letter-spacing: 3px;
  color: rgba(255, 255, 255, .92);
}

/* 标题下的小字：标准中等粗细黑体、水平不倾斜、白色低一档视觉权重，
   字号约为主标题的 1/5（对齐原站频道横幅的副标题比例） */
.ro-page .ro-banner .ro-banner-sub {
  margin-top: 26px;
  font-family: "PingFang SC", "MiSans", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
  font-size: 28px;
  font-weight: 400;
  line-height: 1.7;
  letter-spacing: 3px;
  color: rgba(255, 255, 255, .92);
}

/* 左下角的主色渐变细线，与原站各处的强调线呼应 */
.ro-page .ro-banner::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 42%;
  height: 4px;
  background: linear-gradient(90deg, #f97316, #4fc3e8, transparent);
}

/* 球体视觉 */
.ro-page .ro-visual {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 340px;
}

.ro-page .ro-visual::before {
  content: "";
  position: absolute;
  width: 330px;
  height: 330px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #fff 0 5%, #9be4f4 28%, var(--pri) 72%);
  box-shadow: 0 40px 70px rgb(33 94 179 / 26%);
}

.ro-page .ro-orbit {
  position: absolute;
  border: 1px solid rgb(255 255 255 / 60%);
  border-radius: 50%;
}

.ro-page .ro-orbit.one {
  width: 420px;
  height: 195px;
  transform: rotate(-18deg);
}

.ro-page .ro-orbit.two {
  width: 185px;
  height: 400px;
  transform: rotate(38deg);
}

.ro-page .ro-core {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 160px;
  height: 160px;
  color: #fff;
  border: 1px solid rgb(255 255 255 / 60%);
  border-radius: 50%;
  background: rgb(255 255 255 / 12%);
  backdrop-filter: blur(9px);
  box-shadow: inset 0 0 30px rgb(255 255 255 / 22%);
}

.ro-page .ro-core b {
  font: italic 700 44px Georgia, "Times New Roman", serif;
  line-height: 1;
}

.ro-page .ro-core span {
  margin-top: 6px;
  font-size: 10px;
  line-height: 1.6;
  letter-spacing: 3px;
  text-align: center;
}

.ro-page .ro-visual .ro-visual-tag {
  position: absolute;
  bottom: 0;
  z-index: 2;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 5px;
  color: #ffb877; /* 深色背景上用浅橙，原 var(--pri) 深蓝不可见 */
}

/* ---------- 面包屑 ---------- */

.ro-page .ro-crumb {
  border-bottom: 1px solid var(--line);
  background: #fff;
}

.ro-page .ro-crumb .shell {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 56px;
  font-size: 14px;
  color: var(--body);
}

.ro-page .ro-crumb a:hover {
  color: var(--pri);
}

.ro-page .ro-crumb .sep {
  color: #bbb;
}

.ro-page .ro-crumb .cur {
  color: var(--head);
}

/* ---------- 区块与标题 ---------- */

.ro-page .ro-sec {
  padding: 80px 0;
}

.ro-page .ro-sec.alt {
  background: var(--alt);
}

.ro-page .ro-head {
  margin-bottom: 44px;
  text-align: center;
}

.ro-page .ro-head h2 {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--head);
}

.ro-page .ro-head .en {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: #aaa;
}

/* 原站的区块标题下方带一条分隔线，这里沿用为短横杠 */
.ro-page .ro-head hr {
  width: 46px;
  height: 3px;
  margin: 18px auto 0;
  border: 0;
  background: var(--pri);
}

.ro-page .ro-head .lead {
  max-width: 860px;
  margin: 20px auto 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--body);
}

.ro-page .ro-note {
  margin-top: 18px;
  font-size: 13px;
  color: #999;
  text-align: center;
}

/* ---------- 企业数据 ---------- */

.ro-page .ro-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1000px;
  margin: 50px auto 0;
}

.ro-page .ro-stats li {
  padding: 28px 20px;
  text-align: center;
  background: var(--alt);
  border-bottom: 3px solid var(--pri);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.ro-page .ro-stats li:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgb(33 94 179 / 12%);
}

.ro-page .ro-stats b {
  display: block;
  font-size: 30px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--pri);
}

.ro-page .ro-stats span {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  color: var(--body);
}

/* ---------- 选型表 ---------- */

.ro-page .ro-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  background: #fff;
}

.ro-page .ro-table-wrap table {
  width: 100%;
  min-width: 860px;
}

.ro-page .ro-table-wrap th {
  padding: 16px 18px;
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  text-align: left;
  background: var(--pri);
  white-space: nowrap;
}

.ro-page .ro-table-wrap td {
  padding: 16px 18px;
  font-size: 14px;
  color: var(--body);
  border-bottom: 1px solid var(--line);
  transition: background 0.3s ease;
}

.ro-page .ro-table-wrap tbody tr:last-child td {
  border-bottom: 0;
}

.ro-page .ro-table-wrap tbody tr:nth-child(2n) td {
  background: #fafafa;
}

.ro-page .ro-table-wrap tbody tr:hover td {
  background: var(--pri-soft);
}

.ro-page .ro-table-wrap td:first-child {
  font-weight: 700;
  color: var(--pri);
  white-space: nowrap;
}

/* ---------- 产品体系 ---------- */

.ro-page /* ---------- 应用场景 ---------- */

.ro-page .ro-apps {
  border-top: 1px solid var(--line);
}

.ro-page .ro-apps article {
  display: grid;
  grid-template-columns: 90px 240px 1fr;
  gap: 24px;
  align-items: center;
  padding: 26px 16px;
  background: #fff;
  border-bottom: 1px solid var(--line);
  transition: background 0.3s ease, padding-left 0.3s ease;
}

.ro-page .ro-apps article:hover {
  background: var(--pri-soft);
  padding-left: 28px;
}

.ro-page .ro-apps .num {
  font-size: 26px;
  font-weight: 700;
  color: var(--line);
  transition: color 0.3s ease;
}

.ro-page .ro-apps article:hover .num {
  color: var(--pri);
}

.ro-page .ro-apps h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--head);
}

.ro-page .ro-apps p {
  font-size: 14px;
  line-height: 1.9;
  color: var(--body);
}

/* ---------- 企业能力 ---------- */

.ro-page .ro-caps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.ro-page .ro-caps li {
  padding: 34px 26px;
  background: #fff;
  border: 1px solid var(--line);
  border-top: 3px solid var(--pri);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.ro-page .ro-caps li:hover {
  box-shadow: 0 12px 30px rgb(33 94 179 / 12%);
  transform: translateY(-4px);
}

.ro-page .ro-caps b {
  display: block;
  margin-bottom: 10px;
  font-size: 18px;
  color: var(--head);
}

.ro-page .ro-caps span {
  font-size: 14px;
  line-height: 1.9;
  color: var(--body);
}

/* ---------- 常见问题 ---------- */

.ro-page .ro-faq {
  max-width: 1100px;
  margin: 0 auto;
  border-top: 1px solid var(--line);
}

.ro-page .ro-faq details {
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.ro-page .ro-faq summary {
  display: grid;
  grid-template-columns: 56px 1fr 32px;
  gap: 12px;
  align-items: center;
  padding: 22px 16px;
  font-size: 16px;
  font-weight: 700;
  color: var(--head);
  cursor: pointer;
  list-style: none;
  transition: color 0.3s ease, background 0.3s ease;
}

.ro-page .ro-faq summary::-webkit-details-marker {
  display: none;
}

.ro-page .ro-faq summary:hover {
  color: var(--pri);
  background: var(--pri-soft);
}

.ro-page .ro-faq summary .idx {
  font-size: 15px;
  font-weight: 700;
  color: var(--pri);
}

.ro-page .ro-faq summary i {
  font-size: 22px;
  font-style: normal;
  line-height: 1;
  color: var(--pri);
  text-align: center;
  transition: transform 0.3s ease;
}

.ro-page .ro-faq details[open] summary {
  color: var(--pri);
}

.ro-page .ro-faq details[open] summary i {
  transform: rotate(45deg);
}

.ro-page .ro-faq details > p {
  padding: 0 48px 24px 68px;
  font-size: 14px;
  line-height: 1.95;
  color: var(--body);
}

/* ---------- 技术咨询 ---------- */

.ro-page .ro-contact {
  padding: 80px 0;
  background: var(--pri);
}

.ro-page .ro-contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.ro-page .ro-contact h2 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.5;
  color: #fff;
}

.ro-page .ro-contact .en {
  display: block;
  margin-bottom: 14px;
  font-size: 13px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: rgb(255 255 255 / 60%);
}

.ro-page .ro-contact-card {
  padding: 34px;
  background: #fff;
}

.ro-page .ro-contact-card > p {
  margin-bottom: 14px;
  font-size: 16px;
  font-weight: 700;
  color: var(--head);
}

.ro-page .ro-contact-card li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 2.1;
  color: var(--body);
}

.ro-page .ro-contact-card li::before {
  content: "";
  position: absolute;
  top: 14px;
  left: 0;
  width: 6px;
  height: 6px;
  background: var(--pri);
}

.ro-page .ro-tel {
  display: block;
  margin: 24px 0 14px;
  padding: 16px;
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  text-align: center;
  background: var(--pri);
  transition: background 0.3s ease;
}

.ro-page .ro-tel:hover {
  background: var(--pri-dark);
  color: #fff;
}

.ro-page .ro-contact-card small {
  display: block;
  font-size: 12.5px;
  line-height: 1.7;
  color: #999;
}

/* ---------- 滚动显现：节奏与原站的 .5s ease 一致 ---------- */

.ro-page .reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.ro-page .reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 响应式：断点沿用原站的 1024 / 768 ---------- */

@media screen and (max-width: 1200px) {
  .ro-page .ro-products {
    grid-template-columns: repeat(2, 1fr);
  }
  .ro-page .ro-caps {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media screen and (max-width: 1024px) {
  .ro-page .ro-banner .shell {
    grid-template-columns: 1fr;
    gap: 24px;
    min-height: 0;
    padding-top: 46px;
    padding-bottom: 46px;
    text-align: center;
  }
  .ro-page .ro-banner h1 {
    font-size: 58px;
  }
  .ro-page .ro-visual {
    min-height: 300px;
  }
  .ro-page .ro-visual::before {
    width: 270px;
    height: 270px;
  }
  .ro-page .ro-orbit.one {
    width: 350px;
    height: 165px;
  }
  .ro-page .ro-orbit.two {
    width: 155px;
    height: 335px;
  }
  .ro-page .ro-core {
    width: 135px;
    height: 135px;
  }
  .ro-page .ro-core b {
    font-size: 36px;
  }
  .ro-page .ro-sec {
    padding: 60px 0;
  }
  .ro-page .ro-head h2 {
    font-size: 28px;
  }
  .ro-page .ro-contact-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }
  .ro-page .ro-contact h2 {
    font-size: 26px;
  }
  .ro-page .ro-apps article {
    grid-template-columns: 64px 180px 1fr;
    gap: 16px;
  }
}

@media screen and (max-width: 768px) {
  .ro-page {
    font-size: 14px;
  }
  .ro-page .ro-banner .shell {
    padding-top: 34px;
    padding-bottom: 34px;
    gap: 16px;
  }
  .ro-page .ro-banner .eyebrow {
    margin-bottom: 12px;
    font-size: 12px;
    letter-spacing: 1px;
  }
  .ro-page .ro-banner h1 {
    font-size: 36px;
  }
  .ro-page .ro-banner .ro-banner-sub {
    margin-top: 16px;
    font-size: 15px;
    letter-spacing: 2px;
  }
  .ro-page .ro-visual {
    min-height: 230px;
  }
  .ro-page .ro-visual::before {
    width: 200px;
    height: 200px;
  }
  .ro-page .ro-orbit.one {
    width: 262px;
    height: 124px;
  }
  .ro-page .ro-orbit.two {
    width: 118px;
    height: 250px;
  }
  .ro-page .ro-core {
    width: 104px;
    height: 104px;
  }
  .ro-page .ro-core b {
    font-size: 28px;
  }
  .ro-page .ro-core span {
    font-size: 8px;
    letter-spacing: 2px;
  }
  .ro-page .ro-visual .ro-visual-tag {
    font-size: 11px;
    letter-spacing: 3px;
  }
  .ro-page .ro-crumb .shell {
    height: 46px;
    font-size: 13px;
  }
  .ro-page .ro-sec {
    padding: 44px 0;
  }
  .ro-page .ro-head {
    margin-bottom: 30px;
  }
  .ro-page .ro-head h2 {
    font-size: 22px;
  }
  .ro-page .ro-products,
  .ro-page .ro-caps {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .ro-page .ro-stats {
    grid-template-columns: 1fr;
    gap: 12px;
    margin-top: 30px;
  }
  .ro-page .ro-stats li {
    padding: 20px;
  }
  .ro-page .ro-stats b {
    font-size: 24px;
  }
  .ro-page .ro-apps article {
    grid-template-columns: 48px 1fr;
    gap: 6px 14px;
    padding: 20px 12px;
  }
  .ro-page .ro-apps article:hover {
    padding-left: 12px;
  }
  .ro-page .ro-apps p {
    grid-column: 2;
  }
  .ro-page .ro-apps .num {
    font-size: 20px;
  }
  .ro-page .ro-faq summary {
    grid-template-columns: 38px 1fr 24px;
    padding: 18px 8px;
    font-size: 15px;
  }
  .ro-page .ro-faq details > p {
    padding: 0 12px 20px 46px;
  }
  .ro-page .ro-contact {
    padding: 44px 0;
  }
  .ro-page .ro-contact-card {
    padding: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .ro-page .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .ro-page * {
    transition: none !important;
  }
}

/* 产品体系卡片:平板两列、手机单列 */
@media screen and (max-width: 1024px) {
  .ro-page .ro-cards { grid-template-columns: repeat(2, 1fr); }
}
@media screen and (max-width: 640px) {
  .ro-page .ro-cards { grid-template-columns: 1fr; }
  .ro-page .ro-cmscard { padding: 26px 20px; }
  .ro-page .ro-cmscard .pic { margin: -26px -20px 16px; }
  .ro-page .ro-cmscard .pic img { height: 160px; }
}

/* 首屏与其他产品栏目页观感对齐后的响应式高度 */
@media (max-width: 900px) {
  .ro-page .ro-banner { min-height: 560px !important; }
}
@media (max-width: 560px) {
  .ro-page .ro-banner { min-height: 460px !important; }
  /* 特大标题按视口宽度等比缩放：375px 宽约 30px，560px 宽约 45px */
  .ro-page .ro-banner h1 { font-size: 8vw; }
  .ro-page .ro-banner .ro-banner-sub { font-size: 13px; letter-spacing: 1px; }
}