.eg-testing {
    --blue: #0a2f6b;
    --cyan: #0a8795;
    --text: #26364a;
    --muted: #647489;
    --border: #dce5ef;
    --light: #f5f8fc;

    max-width: 1180px;
    margin: 0 auto;
    padding: 68px 24px;
    color: var(--text);
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.6;
    box-sizing: border-box;
  }

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

  .eg-testing h2,
  .eg-testing h3,
  .eg-testing h4,
  .eg-testing p {
    margin-top: 0;
  }

  .eg-testing__header {
    max-width: 860px;
    margin: 0 auto 48px;
    text-align: center;
  }

  .eg-testing__eyebrow {
    margin-bottom: 10px;
    color: var(--cyan);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 1.6px;
    text-transform: uppercase;
  }

  .eg-testing__header h2 {
    margin-bottom: 16px;
    color: var(--blue);
    font-size: clamp(30px, 4vw, 44px);
    line-height: 1.2;
  }

  .eg-testing__intro {
    margin-bottom: 0;
    color: var(--muted);
    font-size: 17px;
  }

  .eg-testing__section {
    margin-bottom: 64px;
  }

  .eg-testing__heading {
    max-width: 780px;
    margin: 0 auto 30px;
    text-align: center;
  }

  .eg-testing__heading h3 {
    margin-bottom: 9px;
    color: var(--blue);
    font-size: 28px;
    line-height: 1.25;
  }

  .eg-testing__heading p {
    margin-bottom: 0;
    color: var(--muted);
  }

  /* 可靠性测试 */
  .eg-test-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .eg-test-card {
    position: relative;
    overflow: hidden;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 14px;
    box-shadow: 0 8px 24px rgba(25, 51, 82, 0.07);
  }

  .eg-test-card__top {
    display: flex;
    align-items: center;
    gap: 16px;
    min-height: 86px;
    padding: 20px 24px;
    background: var(--light);
    border-bottom: 1px solid var(--border);
  }

  .eg-test-card__number {
    display: inline-flex;
    flex: 0 0 48px;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    color: #fff;
    background: var(--blue);
    border-radius: 50%;
    font-size: 14px;
    font-weight: 700;
  }

  .eg-test-card h4 {
    margin-bottom: 0;
    color: var(--blue);
    font-size: 19px;
    line-height: 1.35;
  }

  .eg-test-card__body {
    padding: 24px;
  }

  .eg-param-list {
    margin: 0;
  }

  .eg-param-row {
    display: grid;
    grid-template-columns: 44% 56%;
    padding: 10px 0;
    border-bottom: 1px solid #e8eef4;
  }

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

  .eg-param-row dt {
    color: var(--muted);
    font-size: 14px;
  }

  .eg-param-row dd {
    margin: 0;
    color: var(--text);
    font-size: 14px;
    font-weight: 700;
  }

  /* 检测设备 */
  .eg-equipment {
    overflow: hidden;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 14px;
    box-shadow: 0 8px 24px rgba(25, 51, 82, 0.07);
  }

  .eg-equipment__item {
    display: grid;
    grid-template-columns: 220px 1fr;
    border-bottom: 1px solid var(--border);
  }

  .eg-equipment__item:last-child {
    border-bottom: 0;
  }

  .eg-equipment__title {
    padding: 25px;
    color: #fff;
    background: var(--blue);
  }

  .eg-equipment__title h4 {
    margin-bottom: 5px;
    font-size: 17px;
  }

  .eg-equipment__title span {
    color: rgba(255, 255, 255, 0.72);
    font-size: 12px;
  }

  .eg-equipment__details {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    padding: 25px;
  }

  .eg-equipment__detail {
    padding-left: 15px;
    border-left: 3px solid var(--cyan);
  }

  .eg-equipment__detail strong {
    display: block;
    margin-bottom: 3px;
    color: var(--blue);
    font-size: 13px;
  }

  .eg-equipment__detail span {
    color: var(--muted);
    font-size: 13px;
  }

  /* 应用和边界 */
  .eg-testing__bottom {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 22px;
    margin-bottom: 38px;
  }

  .eg-testing__panel {
    padding: 28px;
    background: var(--light);
    border-radius: 12px;
  }

  .eg-testing__panel h3 {
    margin-bottom: 15px;
    color: var(--blue);
    font-size: 21px;
  }

  .eg-testing__panel ul {
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .eg-testing__panel li {
    position: relative;
    margin-bottom: 10px;
    padding-left: 23px;
    color: var(--muted);
    font-size: 14px;
  }

  .eg-testing__panel li:last-child {
    margin-bottom: 0;
  }

  .eg-testing__panel li::before {
    position: absolute;
    top: 1px;
    left: 0;
    color: var(--cyan);
    font-weight: 700;
    content: "✓";
  }

  .eg-testing__notice {
    margin-bottom: 38px;
    padding: 22px 25px;
    color: #655838;
    background: #fff9ec;
    border: 1px solid #edd8a7;
    border-left: 5px solid #d69a23;
    border-radius: 9px;
    font-size: 13px;
  }

  .eg-testing__notice strong {
    color: #795416;
  }

  .eg-testing__cta {
    padding: 40px 28px;
    text-align: center;
    background: linear-gradient(135deg, var(--blue), #125293);
    border-radius: 16px;
  }

  .eg-testing__cta h3 {
    margin-bottom: 10px;
    color: #fff;
    font-size: 27px;
  }

  .eg-testing__cta p {
    max-width: 760px;
    margin: 0 auto 22px;
    color: rgba(255, 255, 255, 0.82);
  }

  .eg-testing__button {
    display: inline-flex;
    align-items: center;
    min-height: 48px;
    padding: 0 24px;
    color: var(--blue);
    background: #fff;
    border-radius: 6px;
    font-weight: 700;
    text-decoration: none;
  }

  @media (max-width: 850px) {
    .eg-equipment__item {
      grid-template-columns: 1fr;
    }

    .eg-equipment__details {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  @media (max-width: 680px) {
    .eg-testing {
      padding: 48px 16px;
    }

    .eg-test-grid,
    .eg-testing__bottom,
    .eg-equipment__details {
      grid-template-columns: 1fr;
    }

    .eg-param-row {
      grid-template-columns: 1fr;
      gap: 3px;
    }
  }