/* Linkinfra 业务介绍页（T6）· 正文片段样式：头图 Hero → 锚点导航 → 行业痛点 → 平台架构 → 应用场景 → 核心价值 → 产品推荐 → FAQ → CTA */
/* 依赖：无（纯 CSS，不引框架 / 字体文件 / JS 库）；图片走 /static/home/images/linkinfra/ 站点路径 */
/* 本片段不含 header 顶部导航与 footer 页脚样式（由模板负责）；全部选择器以 .lf- 前缀限定，不使用 body / * 等全局选择器 */

/* ============ 0. 基础容器 ============ */
.lf-hero,
.lf-nav,
.lf-pain,
.lf-arch,
.lf-scene,
.lf-value,
.lf-products,
.lf-faq,
.lf-cta {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Microsoft YaHei UI', 'SimSun', 'SimHei', 'Arial';
  -webkit-font-smoothing: antialiased;
}

.lf-hero,
.lf-nav,
.lf-pain-card,
.lf-pain-body,
.lf-pain-media,
.lf-scene-card,
.lf-value-card,
.lf-prod-card,
.lf-faq-item,
.lf-faq-q,
.lf-faq-a,
.lf-cta,
.lf-btn {
  box-sizing: border-box;
  font-size: 14px;
  line-height: 1;}

.lf-wrap {
  width: 85%;
  max-width: 1400px;
  margin: 0 auto;
  position: relative;
}

.lf-arrow {
  display: block;
  width: 0.16667rem;
  height: 0.16667rem;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M3.2 8.8 8.8 3.2M4.9 3.2h3.9v3.9' fill='none' stroke='%23ffffff' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / contain no-repeat;
}

.lf-arrow-sm {
  width: 0.13636rem;
  height: 0.13636rem;
}

/* ============ 1. 头图 Hero ============ */
.lf-hero {
  position: relative;
  height: 6.81818rem;
  background-color: #282B37;
  background-image: url(/static/home/images/linkinfra/banner.jpg);
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  overflow: hidden;
}

.lf-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background: linear-gradient(90deg, rgba(0, 0, 0, .78) 0%, rgba(0, 0, 0, .45) 55%, rgba(0, 0, 0, 0) 82%);
  pointer-events: none;
}

.lf-hero-inner {
  z-index: 1;
}

.lf-crumb {
  padding-top: 0.24242rem;
  font-size: 12px;
  line-height: 1.5;
  color: rgba(255, 255, 255, .8);
}

.lf-crumb a {
  color: rgba(255, 255, 255, .8);
  text-decoration: none;
}

.lf-crumb a:hover {
  color: #FFFFFF;
}

.lf-crumb > * + *::before {
  content: "";
  display: inline-block;
  width: 0.09091rem;
  height: 0.09091rem;
  margin: 0 0.15152rem 0 0.09091rem;
  border-top: 1px solid rgba(255, 255, 255, .6);
  border-right: 1px solid rgba(255, 255, 255, .6);
  transform: rotate(45deg);
  vertical-align: middle;
}

.lf-hero-h1 {
  margin: 1.56061rem 0 0;
  font-size: 0.36rem;
  font-weight: 700;
  line-height: 1.2941;
  color: #FFFFFF;
}

.lf-hero-lead {
  max-width: 33%;
  margin: 0.10606rem 0 0;
  font-size: 14px;
  line-height: 1.625;
  color: #FFFFFF;
}

.lf-btn {
  display: inline-flex;
  align-items: center;
  box-sizing: border-box;
  width: 2.12121rem;
  padding-left: 0.42424rem;
  font-size: 0.18939rem;
  line-height: 1;
  text-decoration: none;
  text-align: left;
}

.lf-btn .lf-arrow {
  margin-left: 0.15152rem;
  transition: transform .2s ease;
}

/* hover 不变色：底色/文字保持原样，仅白色箭头右移 */
.lf-btn:hover {
  color: #FFFFFF;
}

.lf-btn:hover .lf-arrow {
  transform: translateX(0.06061rem);
}

.lf-btn-primary {
  height: 0.60606rem;
  border-radius: 0.30303rem;
  background: #E60013;
  color: #FFFFFF;
  margin-top: 0.30303rem;
}

/* ============ 2. 页内锚点导航（吸顶） ============ */
.lf-nav {
  position: sticky;
  top: 1.06061rem;
  z-index: 900;
  transition: top .2s ease;
  background: #FFFFFF;
  border-bottom: 1px solid #EDEDED;
}

.lf-nav-list {
  display: flex;
  margin: 0;
  padding: 0;
  height: 0.78788rem;
  list-style: none;
}

.lf-nav-list li {
  flex: 0 0 1.59091rem;
  width: 1.59091rem;
  margin: 0;
}

.lf-nav-list li a {
  position: relative;
  display: inline-flex;
  align-items: center;
  height: 0.78788rem;
  font-size: 14px;
  font-weight: 700;
  line-height: 3.7714;
  color: #666666;
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s ease;
}

.lf-nav-list li a:hover {
  color: #111111;
}

.lf-nav-list li a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 0.45455rem;
  height: 0.04545rem;
  margin-left: -15px;
  border-radius: 2px;
  background: #E60013;
  transform: scaleX(0);
  transition: transform .3s cubic-bezier(.4, 0, .2, 1);
}

.lf-nav-list li a.lf-active {
  color: #111111;
}

.lf-nav-list li a.lf-active::after {
  transform: scaleX(1);
}

/* ============ 3. 行业痛点 ============ */
.lf-pain {
  background: #FFFFFF;
  padding-top: 1.33333rem;
}

.lf-h2 {
  margin: 0;
  font-size: 0.32rem;
  font-weight: 700;
  line-height: 1.3125;
  color: #222222;
  text-align: center;
}

.lf-pain-card {
  display: flex;
  min-height: 6.45455rem;
  margin-top: 0.5rem;
  background: #FFFFFF;
  border: 1px solid #EDEDED;
  border-radius: 0.09091rem;
  overflow: hidden;
}

.lf-pain-body {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  flex: 1 1 auto;
  min-width: 0;
  padding: 0.34848rem 0.36364rem 0.18182rem 0.30303rem;
}

.lf-pain-title {
  margin: 0;
  font-size: 0.32rem;
  font-weight: 700;
  line-height: 1.3125;
  color: #111111;
}

.lf-pain-desc {
  max-width: 7.89394rem;
  margin: 0.13636rem 0 0;
  font-size: 14px;
  line-height: 1.625;
  color: #666666;
}

.lf-pain-switch {
  margin: 0;
  padding: 0;
  list-style: none;
}

.lf-pain-switch li {
  position: relative;
  margin: 0;
  padding-left: 0.18182rem;
  font-size: 0.24rem;
  line-height: 1.4167;
  color: #CCCCCC;
}

.lf-pain-switch li + li {
  margin-top: 0.04545rem;
}

.lf-pain-switch li.lf-active {
  color: #111111;
}

.lf-pain-switch li.lf-active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 0.04545rem;
  height: 0.36364rem;
  background: #E60013;
}

.lf-pain-media {
  flex: 0 0 49.75%;
  width: 49.75%;
  height: auto;
  aspect-ratio: 609 / 426;
  align-self: center;
  overflow: hidden;
}

.lf-pain-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ============ 4. 平台架构与核心功能 ============ */
.lf-arch {
  background: #FFFFFF;
  padding-top: 1.51515rem;
}

.lf-arch-row {
  display: flex;
  margin-top: 1.72727rem;
  align-items: flex-start;
}

.lf-arch-media {
  flex: 0 0 50%;
  width: 50%;
  height: auto;
  aspect-ratio: 612 / 393;
  overflow: hidden;
}

.lf-arch-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.lf-arch-side {
  flex: 1 1 auto;
  min-width: 0;
  margin-left: 0.62121rem;
  padding-top: 0.95455rem;
}

.lf-arch-sub {
  margin: 0;
  font-size: 0.24rem;
  font-weight: 700;
  line-height: 1.4167;
  color: #111111;
}

.lf-arch-line {
  height: 0;
  margin: 0.66667rem 0 0;
  border: 0;
  border-top: 1px solid #EEEEEE;
}

.lf-arch-list {
  margin: 0.24242rem 0 0;
  padding: 0;
  list-style: none;
}

.lf-arch-list li {
  position: relative;
  margin: 0;
  padding-left: 0.24242rem;
  font-size: 14px;
  line-height: 1.7;
  color: #666666;
}

.lf-arch-list li + li {
  margin-top: 0.24242rem;
}

.lf-arch-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.15152rem;
  width: 0.09091rem;
  height: 0.09091rem;
  border-radius: 0.04545rem;
  background: #E60013;
}

.lf-arch-list strong {
  font-weight: 700;
  color: #333333;
}

/* ============ 5. 应用场景 ============ */
.lf-scene {
  background: #FFFFFF;
  padding-top: 2.21212rem;
  padding-bottom: 1.4697rem;
}

.lf-scene-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.27273rem;
  margin-top: 1.72727rem;
}

.lf-scene-card {
  height: 4.54545rem;
  background: #FFFFFF;
  border: 1px solid #EDEDED;
  border-radius: 0.09091rem;
  overflow: hidden;
}

.lf-scene-media {
  height: 3.66667rem;
  overflow: hidden;
  background: #F5F6F8;
}

.lf-scene-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}

.lf-scene-card:hover .lf-scene-media img {
  transform: scale(1.04);
}

.lf-scene-label {
  margin: 0;
  padding: 0.22727rem 0.28788rem 0.25758rem;
  font-size: 0.24rem;
  font-weight: 700;
  line-height: 1.4167;
  color: #111111;
}

.lf-dots {
  display: flex;
  justify-content: center;
  gap: 0.12121rem;
  margin-top: 0.42424rem;
}

.lf-dot {
  display: block;
  width: 0.30303rem;
  height: 0.04545rem;
  border-radius: 2px;
  background: #DDDDDD;
}

.lf-dot.lf-active {
  width: 0.68182rem;
  background: #E60013;
}

/* ============ 6. 核心价值 ============ */
.lf-value {
  padding-top: 1.10606rem;
  padding-bottom: 1.60606rem;
  background-color: #F7F8FA;
  background-image: url(/static/home/images/linkinfra/value-bg.jpg);
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
}

.lf-value-row {
  display: flex;
  align-items: flex-start;
}

.lf-value-head {
  flex: 1 1 auto;
  min-width: 0;
  padding-right: 0.60606rem;
}

.lf-value-h2 {
  margin: 0;
  font-size: 0.32rem;
  font-weight: 700;
  line-height: 1.3125;
  color: #282B37;
}

.lf-value-list {
  flex: 0 0 9.06061rem;
  width: 48.9%;
  display: grid;
  gap: 0.19697rem;
}

.lf-value-card {
  display: flex;
  align-items: flex-start;
  height: 1.63636rem;
  padding: 0.31818rem 0.24242rem 0 0.40909rem;
  background: #FFFFFF;
  border: 1px solid #EEEEEE;
  border-radius: 0.07576rem;
}

.lf-value-ico {
  display: block;
  flex: 0 0 0.48485rem;
  width: 0.48485rem;
  height: 0.48485rem;
  margin-right: 0.62121rem;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'%3E%3Cg fill='none' stroke='%23282B37' stroke-width='1.6' stroke-linejoin='round' stroke-linecap='round'%3E%3Cpath d='M16 3.6 27.4 10.4 16 17.2 4.6 10.4Z'/%3E%3Cpath d='M6.4 15.2 16 20.8 25.6 15.2'/%3E%3Cpath d='M6.4 20.4 16 26 25.6 20.4'/%3E%3C/g%3E%3Cg fill='none' stroke='%23E60013' stroke-width='1.8' stroke-linejoin='round' stroke-linecap='round'%3E%3Cpath d='M11.6 10.2 16 7.8 20.4 10.2'/%3E%3Cpath d='M12.6 12.8 16 11 19.4 12.8'/%3E%3C/g%3E%3C/svg%3E") center / contain no-repeat;
}

.lf-value-text {
  min-width: 0;
}

.lf-value-text h3 {
  margin: 0;
  font-size: 0.24rem;
  font-weight: 700;
  line-height: 1.4167;
  color: #111111;
}

.lf-value-text p {
  margin: 0.13636rem 0 0;
  font-size: 14px;
  line-height: 1.625;
  color: #666666;
  white-space: nowrap;
}

/* ============ 7. 产品推荐 ============ */
.lf-products {
  background: #FFFFFF;
  padding-top: 1.09091rem;
  padding-bottom: 0.36364rem;
}

.lf-prod-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.27273rem;
  margin-top: 1.22727rem;
}

.lf-prod-card {
  display: flex;
  flex-direction: column;
  height: 6.90909rem;
  background: #FFFFFF;
  border: 1px solid #EDEDED;
  border-radius: 0.09091rem;
  overflow: hidden;
  transition: border-color .2s ease, box-shadow .2s ease;
}

.lf-prod-card:hover {
  border-color: #E60013;
  box-shadow: 0 0.09091rem 0.30303rem rgba(0, 0, 0, .06);
}

.lf-prod-media {
  height: 5.27273rem;
  overflow: hidden;
  background: #F5F6F8;
}

.lf-prod-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}

.lf-prod-card:hover .lf-prod-media img {
  transform: scale(1.06);
}

.lf-prod-body {
  flex: 1 1 auto;
  padding: 0.24242rem 0.31818rem 0.06061rem;
}

.lf-prod-body h3 {
  margin: 0;
  font-size: 0.24rem;
  font-weight: 700;
  line-height: 1.5;
  color: #111111;
}

.lf-prod-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 0.42424rem;
  height: 0.42424rem;
  margin-top: 0.51515rem;
  border-radius: 0.21212rem;
  background: #E60013;
}

/* ============ 8. 常见问题 FAQ ============ */
.lf-faq {
  background: #FFFFFF;
  padding-top: 0.60606rem;
  padding-bottom: 0.45455rem;
}

.lf-faq-list {
  margin-top: 0.36364rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 0.30303rem;
  row-gap: 0.18182rem;
  align-items: start;
}

.lf-faq-item {
  position: relative;
  background: #FFFFFF;
  border: 1px solid #EDEDED;
  border-radius: 0.15152rem;
  overflow: hidden;
}

/* 第 1 条通栏（默认展开，避免首行右侧留空洞） */
.lf-faq-item:first-child {
  grid-column: 1 / -1;
}

.lf-faq-item + .lf-faq-item {
  margin-top: 0;
}

.lf-faq-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.lf-faq-q {
  display: block;
  position: relative;
  padding: 0.13636rem 0.60606rem 0.13636rem 0.30303rem;
  font-size: 0.22727rem;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: 0;
  color: #111111;
  cursor: pointer;
  transition: padding-bottom .3s ease, color .3s ease;
}

.lf-faq-chev {
  position: absolute;
  top: 0.16667rem;
  right: 0.27273rem;
  width: 0.21212rem;
  height: 0.21212rem;
}

.lf-faq-chev::before {
  content: "";
  display: block;
  width: 0.12121rem;
  height: 0.12121rem;
  margin: 2px auto 0;
  border-right: 1.5px solid #E60013;
  border-bottom: 1.5px solid #E60013;
  transform: rotate(45deg);
  transition: transform .3s ease;
}

.lf-faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s cubic-bezier(.4, 0, .2, 1);
}

.lf-faq-a p {
  margin: 0;
  padding: 0 0.30303rem 0.24242rem 0.30303rem;
  font-size: 14px;
  line-height: 1.55;
  letter-spacing: 0;
  color: #666666;
}

.lf-faq-input:checked ~ .lf-faq-q {
  padding-bottom: 0.09091rem;
  color: #E60013;
}

.lf-faq-input:checked ~ .lf-faq-q .lf-faq-chev::before {
  transform: rotate(225deg);
}

.lf-faq-input:checked ~ .lf-faq-a {
  max-height: 6.36364rem;
}

.lf-faq-input:focus-visible ~ .lf-faq-q .lf-faq-chev::before {
  outline: 2px solid #8B8D94;
}

/* ============ 9. CTA 转化区 ============ */
.lf-cta {
  position: relative;
  height: auto;
  padding-top: 0.75758rem;
  padding-bottom: 0.75758rem;
  background-color: #E60013;
  background-image:
    radial-gradient(120% 180% at 76% 45%, rgba(255, 255, 255, .10), rgba(255, 255, 255, 0) 62%),
    linear-gradient(90deg, rgba(0, 0, 0, .06) 0%, rgba(0, 0, 0, 0) 45%),
    url(/static/home/images/linkinfra/cta-bg.jpg);
  background-repeat: no-repeat, no-repeat, repeat;
  background-position: center, center, center;
  background-size: cover, cover, 29.09091rem auto;
  overflow: hidden;
}

.lf-cta-inner {
  z-index: 2;
  padding-top: 0;
}

.lf-cta-h2 {
  margin: 0;
  font-size: 0.36rem;
  font-weight: 700;
  line-height: 1.2941;
  color: #FFFFFF;
}

.lf-cta-sub {
  margin: 0.12121rem 0 0;
  font-size: 14px;
  line-height: 1.5;
  color: #FFFFFF;
}

.lf-btn-ghost {
  width: 2.72727rem;
  height: 0.72727rem;
  padding-left: 0.51515rem;
  font-size: 14px;
  margin-top: 0.33333rem;
  border: 1px solid #FFFFFF;
  border-radius: 0.36364rem;
  background: transparent;
  color: #FFFFFF;
  line-height: 1;}

.lf-cta-person {
  position: absolute;
  bottom: 0;
  right: 108px;
  z-index: 1;
  display: block;
  width: 3.78788rem;
  height: 100%;
  max-height: 3.78788rem;
  pointer-events: none;
  background-image: url(/static/home/images/linkinfra/cta-person.png);
  background-repeat: no-repeat;
  background-position: center bottom;
  background-size: contain;
}

/* ============ 10. 响应式 ============ */
/* 1024–1440：内容两侧留 40 */
@media (min-width: 1025px) and (max-width: 1439px) {
  .lf-wrap {
    max-width: none;
    padding-left: 0.60606rem;
    padding-right: 0.60606rem;
  }
}

/* ≤1024：三列变两列，横排区块改上下叠（左右留 24） */
@media (max-width: 1024px) {
  .lf-wrap {
    max-width: none;
    padding-left: 0.36364rem;
    padding-right: 0.36364rem;
  }

  .lf-hero {
    height: auto;
    padding-bottom: 0.72727rem;
  }

  .lf-hero-h1 {
    margin-top: 0.90909rem;
    font-size: 0.33334rem;
    line-height: 0.45455rem;
  }

  .lf-hero-lead {
    max-width: 6.36364rem;
  }

  .lf-nav-list {
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .lf-nav-list::-webkit-scrollbar {
    display: none;
  }

  .lf-pain {
    padding-top: 0.9697rem;
  }

  .lf-pain-card {
    flex-direction: column-reverse;
    height: auto;
    margin-top: 0.42424rem;
  }

  .lf-pain-body {
    padding: 0.34848rem 0.31818rem 0.31818rem;
  }

  .lf-pain-media {
    flex: 0 0 auto;
    width: 100%;
    height: auto;
    aspect-ratio: 609 / 426;
  }

  .lf-pain-switch {
    margin-top: 0.42424rem;
  }

  .lf-arch {
    padding-top: 0.9697rem;
  }

  .lf-arch-row {
    flex-direction: column;
    margin-top: 0.54545rem;
  }

  .lf-arch-media {
    flex: 0 0 auto;
    width: 100%;
    height: auto;
    aspect-ratio: 612 / 393;
  }

  .lf-arch-side {
    margin-left: 0;
    padding-top: 0.48485rem;
  }

  .lf-arch-line {
    margin-top: 0.30303rem;
  }

  .lf-scene {
    padding-top: 0.9697rem;
    padding-bottom: 0.9697rem;
  }

  .lf-scene-cards {
    grid-template-columns: repeat(2, 1fr);
    margin-top: 0.48485rem;
  }

  .lf-scene-card {
    height: auto;
  }

  .lf-value {
    padding-top: 0.9697rem;
    padding-bottom: 0.9697rem;
  }

  .lf-value-row {
    flex-direction: column;
  }

  .lf-value-head {
    padding-right: 0;
  }

  .lf-value-list {
    flex: 0 0 auto;
    width: 100%;
    margin-top: 0.48485rem;
  }

  .lf-value-text p {
    white-space: normal;
  }

  .lf-products {
    padding-top: 0.9697rem;
    padding-bottom: 0.60606rem;
  }

  .lf-prod-cards {
    grid-template-columns: repeat(2, 1fr);
    margin-top: 0.48485rem;
  }

  .lf-faq {
    padding-top: 0.48485rem;
    padding-bottom: 0.36364rem;
  }

  .lf-faq-list {
    margin-top: 0.30303rem;
    grid-template-columns: 1fr;
    row-gap: 0.18182rem;
  }

  .lf-faq-item:first-child {
    grid-column: auto;
  }

  .lf-faq-a p {
    padding-right: 0.30303rem;
  }

  .lf-cta {
    height: auto;
    padding-bottom: 0.51515rem;
  }

  .lf-cta-inner {
    padding-top: 0.51515rem;
  }

  .lf-cta-person {
    width: 2.27273rem;
    height: 2.27273rem;
    right: 0.36364rem;
  }
}

/* ≤768：单列 + 导航横向滚动 */
@media (max-width: 768px) {
  .lf-wrap {
    padding-left: 0.24242rem;
    padding-right: 0.24242rem;
  }

  .lf-hero-h1 {
    margin-top: 0.60606rem;
    font-size: 0.30303rem;
    line-height: 0.42425rem;
  }

  .lf-hero-lead {
    font-size: 0.18939rem;
    line-height: 0.30303rem;
  }

  .lf-crumb {
    font-size: 0.16667rem;
  }

  .lf-nav-list li {
    flex: 0 0 1.45455rem;
    width: 1.45455rem;
  }

  .lf-h2,
  .lf-value-h2 {
    font-size: 0.28788rem;
    line-height: 0.36364rem;
  }

  .lf-pain-title {
    font-size: 0.25758rem;
    line-height: 0.36364rem;
  }

  .lf-scene-cards,
  .lf-prod-cards {
    grid-template-columns: 1fr;
  }

  .lf-scene-media {
    height: auto;
    aspect-ratio: 396 / 242;
  }

  .lf-prod-card {
    height: auto;
  }

  .lf-prod-media {
    height: auto;
    aspect-ratio: 396 / 348;
  }

  .lf-prod-body {
    padding-bottom: 0.27273rem;
  }

  .lf-value-card {
    height: auto;
    padding: 0.27273rem 0.24242rem 0.27273rem 0.27273rem;
  }

  .lf-value-ico {
    margin-right: 0.24242rem;
  }

  .lf-faq-q {
    padding: 0.18182rem 0.72727rem 0.18182rem 0.24242rem;
    font-size: 0.20454rem;
    line-height: 0.30303rem;
  }

  .lf-faq-chev {
    top: 0.21212rem;
    right: 0.24242rem;
  }

  .lf-faq-a p {
    padding: 0 0.24242rem 0.30303rem;
  }

  .lf-cta-h2 {
    font-size: 0.27273rem;
    line-height: 0.36364rem;
  }

  .lf-cta-person {
    display: none;
  }
}

/* ============ 11. 行业痛点 · 三态切换 ============ */
.lf-pain-state {
  display: none;
}

.lf-pain-state.lf-active {
  display: block;
  animation: lfFadeIn .28s ease both;
}

@keyframes lfFadeIn {
  from { opacity: 0; transform: translateY(0.06061rem); }
  to { opacity: 1; transform: none; }
}

.lf-pain-switch li {
  cursor: pointer;
  transition: color .2s ease;
}

.lf-pain-switch li:hover {
  color: #666666;
}

.lf-pain-switch li.lf-active:hover {
  color: #111111;
}

/* 产品卡：整卡可点击 */
a.lf-prod-card {
  display: block;
  text-decoration: none;
  color: inherit;
}

a.lf-prod-card:hover {
  box-shadow: 0 0.12121rem 0.36364rem rgba(0, 0, 0, .08);
}

/* CTA 按钮放大后的箭头对齐 */
.lf-cta .lf-arrow-sm {
  margin-left: auto;
  margin-right: 0.45455rem;
  width: 0.18182rem;
  height: 0.18182rem;
}

/* ============ 12. 产品卡 · 官网同款悬浮交互 ============ */
.lf-prod-media img {
  transition: transform .4s ease;
}

.lf-prod-body {
  position: relative;
  z-index: 2;
  background: #FFFFFF;
  transition: transform .4s ease;
}

.lf-prod-card:hover .lf-prod-body {
  transform: translateY(-0.7rem);
}

.lf-prod-arrow {
  opacity: 0;
  transition: opacity .3s ease;
}

.lf-prod-card:hover .lf-prod-arrow {
  opacity: 1;
}

/* ============ 13. 站点字体规范（对齐 shejihefangzhen/13.html） ============ */
/* 站点：html 字号 1440=66px、≥1600=100px；正文 14px(≥1600 时 16px)，行高 1.5~1.625 */
@media (min-width: 1600px) {
  .lf-hero-lead,
  .lf-pain-desc,
  .lf-arch-list li,
  .lf-value-text p,
  .lf-faq-a p,
  .lf-cta-sub,
  .lf-nav-list li a {
    font-size: 16px;
  }
}

/* ============ 12. 行业痛点 · 视频（16:9，点击播放） ============ */
.lf-pain-media--video { position: relative; aspect-ratio: 16 / 9; background: #0B0F14; }
.lf-pain-video { display: block; width: 100%; height: 100%; object-fit: cover; background: #0B0F14; }
.lf-pain-play { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; width: 100%; border: 0; padding: 0; background: rgba(255, 255, 255, 0); cursor: pointer; transition: background .25s ease; }
.lf-pain-play:hover { background: rgba(0, 0, 0, .18); }
.lf-pain-play[hidden] { display: none; }
.lf-pain-play-icon { position: relative; width: 64px; height: 64px; border-radius: 50%; background: #E60013; box-shadow: 0 10px 26px rgba(230, 0, 19, .38); transition: transform .2s ease, box-shadow .2s ease; }
.lf-pain-play:hover .lf-pain-play-icon { transform: scale(1.07); box-shadow: 0 14px 32px rgba(230, 0, 19, .5); }
.lf-pain-play-icon::after { content: ""; position: absolute; left: 50%; top: 50%; transform: translate(-42%, -50%); border-style: solid; border-width: 11px 0 11px 18px; border-color: transparent transparent transparent #FFFFFF; }
@media (max-width: 767px) {
  .lf-pain-play-icon { width: 52px; height: 52px; }
  .lf-pain-play-icon::after { border-width: 9px 0 9px 15px; }
}

/* 视频独立成合成层：避免滚动时整块重绘（解决"播放时滚动卡帧"） */
.lf-pain-media--video { contain: paint; }
.lf-pain-video { transform: translateZ(0); -webkit-transform: translateZ(0); -webkit-backface-visibility: hidden; backface-visibility: hidden; }