.oem-page {
  --brand: var(--primary);
  --brand-dark: var(--primary-deep);
  --brand-light: #edf4ef;
  --oem-bg: #f8fbf7;
  color: var(--text);
  background: var(--oem-bg);
  line-height: 1.7;
  overflow: hidden;
}

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

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

.oem-container {
  width: var(--container);
  max-width: calc(100% - 40px);
  margin: 0 auto;
}

.oem-section {
  padding: 72px 0;
}

.oem-section-head {
  max-width: 760px;
  margin: 0 auto 42px;
  text-align: center;
}

.oem-section-kicker {
  display: inline-block;
  margin-bottom: 12px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--brand-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
}

.oem-section-title {
  margin: 0 0 12px;
  color: var(--primary);
  font-size: 34px;
  line-height: 1.3;
}

.oem-section-desc {
  margin: 0;
  color: var(--text-light);
  font-size: 16px;
}

.oem-btn {
  min-width: 140px;
  min-height: 48px;
  padding: 12px 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 600;
  transition: .25s ease;
  cursor: pointer;
}

.oem-btn-primary {
  color: #fff;
  background: var(--primary);
  box-shadow: 0 10px 24px rgba(30,76,68,.22);
}

.oem-btn-primary:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}

.oem-btn-ghost {
  color: #fff;
  border-color: rgba(255,255,255,.5);
  background: rgba(255,255,255,.08);
}

.oem-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.oem-bg-soft {
  background: #f2f7f3;
}

.oem-ph {
  position: relative;
  width: 100%;
  overflow: hidden;
  border-radius: 16px;
  background: linear-gradient(135deg, #e7f1e9, #d8e8dd 45%, #edf6ef);
}

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

/* hero */
.oem-hero {
  margin-top: 0;
  padding: 170px 0 62px;
  background:
    radial-gradient(circle at 88% 12%, rgba(166,123,82,.13), transparent 30%),
    radial-gradient(circle at left bottom, rgba(30,76,68,.10), transparent 32%),
    linear-gradient(180deg, #f7fbf6 0%, #f8fbf7 100%);
}

.oem-hero-grid {
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  gap: 42px;
  align-items: center;
}

.oem-hero-copy {
  max-width: 640px;
}

.oem-hero-badge {
  display: inline-flex;
  margin-bottom: 18px;
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--brand-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
}

.oem-hero h1 {
  margin: 0 0 20px;
  color: var(--primary);
  font-size: 48px;
  line-height: 1.16;
}

.oem-hero p {
  margin: 0 0 26px;
  color: var(--text-light);
  font-size: 17px;
}

.oem-hero-actions {
  margin-bottom: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.oem-hero-points {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.oem-hero-point {
  padding: 18px 16px;
  border-radius: 16px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.oem-hero-point strong {
  display: block;
  margin-bottom: 4px;
  color: var(--primary);
  font-size: 17px;
}

.oem-hero-point span {
  color: var(--text-light);
  font-size: 14px;
}

.oem-hero-visual {
  position: relative;
}

.oem-hero-main-image {
  height: 520px;
  border-radius: 30px;
  box-shadow: var(--shadow);
}

.oem-hero-floating {
  position: absolute;
  right: -10px;
  bottom: 24px;
  width: 220px;
  padding: 16px;
  border-radius: 18px;
  background: rgba(255,255,255,.95);
  border: 1px solid var(--line);
  box-shadow: 0 12px 30px rgba(30,76,68,.14);
}

.oem-hero-floating .oem-ph {
  height: 110px;
}

/* subnav */
.oem-subnav-wrap {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(248,251,247,.94);
  backdrop-filter: blur(10px);
  border-top: 1px solid rgba(228,221,210,.65);
  border-bottom: 1px solid rgba(228,221,210,.9);
}

.oem-subnav {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding: 14px 0;
  scrollbar-width: none;
}

.oem-subnav::-webkit-scrollbar {
  display: none;
}

.oem-subnav a {
  flex: 0 0 auto;
  padding: 10px 17px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  color: var(--text-light);
  font-size: 14px;
  white-space: nowrap;
  transition: .25s ease;
}

.oem-subnav a:hover,
.oem-subnav a.active {
  color: #fff;
  background: var(--primary);
  border-color: var(--primary);
}

/* grids */
.oem-service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.oem-client-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.oem-process-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.oem-case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.oem-faq-wrap {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.oem-service-card,
.oem-client-card,
.oem-process-item,
.oem-adv-card,
.oem-faq-item,
.oem-category-box {
  padding: 26px 24px;
}

.oem-service-icon,
.oem-process-step {
  width: 52px;
  height: 52px;
  margin-bottom: 18px;
  border-radius: 16px;
  background: linear-gradient(135deg, #eef6ef, #d8eadf);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
}

.oem-process-step {
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
}

.oem-card h3 {
  margin: 0 0 10px;
  color: var(--primary);
}

.oem-card p {
  margin: 0;
  color: var(--text-light);
  font-size: 14px;
}

/* category */
.oem-category-layout {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 28px;
}

.oem-category-visual {
  padding: 18px;
}

.oem-category-visual .oem-ph {
  height: 100%;
  min-height: 420px;
}

.oem-category-content {
  display: grid;
  gap: 18px;
}

.oem-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.oem-tag {
  padding: 8px 13px;
  border-radius: 999px;
  background: var(--brand-light);
  color: var(--primary);
  font-size: 14px;
}

/* advantage */
.oem-advantage-layout {
  display: grid;
  grid-template-columns: .92fr 1.08fr;
  gap: 28px;
  align-items: center;
}

.oem-advantage-image .oem-ph {
  min-height: 480px;
}

.oem-advantage-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

/* case */
.oem-case-card {
  overflow: hidden;
}

.oem-case-card .oem-ph {
  height: 220px;
  border-radius: 0;
}

.oem-case-body {
  padding: 22px 20px 24px;
}

.oem-case-meta {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.oem-case-meta span {
  padding: 7px 12px;
  border-radius: 999px;
  background: #f3f7f1;
  color: var(--primary);
  font-size: 13px;
}

/* cta */
.oem-cta-box {
  padding: 42px 38px;
  border-radius: 28px;
  background:
    radial-gradient(circle at left top, rgba(166,123,82,.18), transparent 26%),
    linear-gradient(135deg, var(--primary-deep), var(--primary));
  color: #fff;
  box-shadow: 0 18px 40px rgba(30,76,68,.22);
}

.oem-cta-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: center;
}

.oem-cta-box h2 {
  margin: 0 0 10px;
  font-size: 32px;
}

.oem-cta-box p {
  margin: 0;
  color: rgba(255,255,255,.86);
}

/* contact */
.oem-contact-layout {
  display: grid;
  grid-template-columns: .92fr 1.08fr;
  gap: 28px;
  align-items: start;
}

.oem-contact-info,
.oem-form-card {
  padding: 30px 26px;
}

.oem-contact-info .oem-ph {
  height: 325px;
  margin-top: 20px;
}

.oem-contact-list {
  display: grid;
  gap: 14px;
}

.oem-contact-list .item {
  padding: 14px 16px;
  border-radius: 14px;
  background: #f7faf6;
  border: 1px solid var(--line);
}

.oem-contact-list strong {
  display: block;
  margin-bottom: 4px;
  color: var(--primary);
}

.oem-contact-list span {
  color: var(--text-light);
  font-size: 14px;
}

.oem-form {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.oem-form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.oem-form-group.full,
.oem-form-note,
.captcha-wrap {
  grid-column: 1 / -1;
}

.oem-form-group label {
  color: var(--primary);
  font-size: 14px;
  font-weight: 700;
}

.oem-form-group input,
.oem-form-group select,
.oem-form-group textarea,
.yanzheng {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  outline: none;
  background: #fff;
  color: var(--text);
  font-size: 14px;
  transition: .2s ease;
}

.oem-form-group textarea {
  min-height: 130px;
  resize: vertical;
}

.oem-form-group input:focus,
.oem-form-group select:focus,
.oem-form-group textarea:focus,
.yanzheng:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(30,76,68,.12);
}

.oem-form-note {
  color: var(--text-light);
  font-size: 13px;
}

.captcha-wrap {
  padding: 18px;
  border-radius: 16px;
  background: #f8faf8;
  border: 1px solid var(--line);
}

.yanzhengma {
  display: inline-block;
  margin-right: 12px;
  margin-bottom: 12px;
  color: var(--primary);
  font-weight: 700;
}

.yanzhengimg {
  display: inline-block;
  width: 130px;
  height: 46px;
  vertical-align: middle;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  cursor: pointer;
  object-fit: cover;
}

.yanzheng {
  display: block;
  height: 48px;
  margin-top: 12px;
}

.oem-form-submit {
  display: flex;
  align-items: center;
}

.oem-form-submit .oem-btn {
  width: 100%;
  border: none;
}

@media (max-width: 1200px) {
  .oem-service-grid,
  .oem-case-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .oem-client-grid,
  .oem-process-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 991px) {
  .oem-hero {
    padding-top: 130px;
  }

  .oem-hero-grid,
  .oem-category-layout,
  .oem-advantage-layout,
  .oem-contact-layout,
  .oem-cta-grid {
    grid-template-columns: 1fr;
  }

  .oem-hero h1 {
    font-size: 38px;
  }

  .oem-hero-main-image {
    height: 360px;
  }

  .oem-hero-floating {
    position: relative;
    right: auto;
    bottom: auto;
    width: 100%;
    margin-top: 16px;
  }

  .oem-faq-wrap {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .oem-container {
    max-width: calc(100% - 24px);
  }

  .oem-section {
    padding: 46px 0;
  }

  .oem-hero {
    padding-top: 112px;
    padding-bottom: 42px;
  }

  .oem-section-title {
    font-size: 25px;
  }

  .oem-hero h1 {
    font-size: 29px;
  }

  .oem-hero p {
    font-size: 15px;
  }

  .oem-hero-points,
  .oem-service-grid,
  .oem-client-grid,
  .oem-process-list,
  .oem-advantage-list,
  .oem-case-grid,
  .oem-form {
    grid-template-columns: 1fr;
  }

  .oem-hero-main-image {
    height: 260px;
    border-radius: 22px;
  }

  .oem-category-visual .oem-ph,
  .oem-advantage-image .oem-ph {
    min-height: 240px;
  }

  .oem-cta-box {
    padding: 28px 20px;
    border-radius: 22px;
  }

  .oem-cta-actions,
  .oem-hero-actions {
    flex-direction: column;
  }

  .oem-cta-actions a,
  .oem-hero-actions a {
    width: 100%;
  }

  .oem-contact-info,
  .oem-form-card,
  .oem-service-card,
  .oem-client-card,
  .oem-process-item,
  .oem-adv-card,
  .oem-faq-item,
  .oem-category-box {
    padding: 22px 18px;
  }
}