/* SEO 页面独立视觉：沿用业务页公共 Banner，主体使用 SEO 专属信息卡片。 */
.service-page--seo {
  --seo-blue: #1e73be;
  --seo-card: #ffffff;
  --seo-card-soft: #eef5fc;
  --seo-adv-surface: #0a0f1e;
}

.service-page--seo .seo-overview {
  width: var(--tech-content-max, min(1440px, calc(100% - 120px)));
  padding: 84px 0 104px;
}

.service-page--seo .seo-section-heading {
  max-width: 800px;
  margin-bottom: 24px;
}

.service-page--seo .seo-section-heading h2 {
  font-size: clamp(34px, 3.1vw, 48px);
}

.service-page--seo .seo-module-grid {
  gap: 24px;
}

.service-page--seo .seo-module-card {
  display: flex;
  min-height: 600px;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid #dce6f0;
  border-radius: 12px;
  background: var(--seo-card);
}

.service-page--seo .seo-module-visual {
  position: relative;
  display: grid;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border-bottom: 0;
  place-items: center;
  background: #fff;
  line-height: 0;
}

.service-page--seo .seo-module-visual::after {
  content: none;
}

.service-page--seo .seo-module-visual img {
  position: absolute;
  inset: 0;
  display: block;
  width: 100% !important;
  max-width: none;
  height: 100% !important;
  margin: 0;
  padding: 0;
  object-fit: cover;
  object-position: center;
}

.service-page--seo .seo-module-copy {
  display: flex;
  min-height: 0;
  flex: 1;
  flex-direction: column;
  padding: 24px 28px 28px;
  border: 0;
  border-top: 1px solid #dce6f0;
}

.service-page--seo .seo-module-index {
  margin-bottom: 8px;
  color: #2c6ba5;
  font-size: 16px;
  font-weight: 780;
  letter-spacing: .02em;
}

.service-page--seo .seo-module-copy h3 {
  margin: 0 0 12px;
  color: #13223a;
  font-size: clamp(22px, 1.7vw, 27px);
  font-weight: 760;
}

.service-page--seo .seo-module-copy p {
  color: #586b82;
  font-size: 15px;
  line-height: 1.72;
}

.service-page--seo .seo-module-metric {
  display: flex;
  min-height: 62px;
  margin-top: 20px;
  padding: 13px 16px;
  border: 0;
  border-radius: 8px;
  align-items: baseline;
  gap: 8px;
  background: #f2f7fd;
}

.service-page--seo .seo-module-metric strong {
  color: #8b5e00;
  font-size: 18px;
  font-weight: 800;
  white-space: nowrap;
}

.service-page--seo .seo-module-metric span {
  color: #506882;
  font-size: 13px;
  line-height: 1.45;
}

.service-page--seo .seo-module-list {
  display: flex;
  flex-direction: column;
  margin: 22px 0 0;
  padding-top: 20px;
  border-top: 1px solid #dce6f0;
  gap: 14px;
  color: #53677f;
  font-size: 14px;
  font-weight: 500;
}

.service-page--seo .seo-module-list li {
  position: relative;
  min-height: 22px;
  padding-left: 34px;
}

.service-page--seo .seo-module-list li::before {
  position: absolute;
  top: 0;
  left: 0;
  display: grid;
  width: 22px;
  height: 22px;
  border: 0;
  border-radius: 6px;
  place-items: center;
  background: #f7aa08;
  color: #13223a;
  content: "✓";
  font-size: 11px;
  font-weight: 900;
}

.service-page--seo .seo-advantages {
  padding: 108px 0 90px;
  background: var(--seo-adv-surface);
}

.service-page--seo .seo-advantages::after {
  background: var(--seo-adv-surface);
}

.service-page--seo .seo-section-heading--light h2 {
  color: #e8edf7;
  text-wrap: balance;
}

.service-page--seo .seo-section-heading--light p { color: #94a3b8; }

.service-page--seo .seo-adv-grid {
  position: relative;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
}

.service-page--seo .seo-adv-grid::before {
  position: absolute;
  top: 48px;
  right: 16.666%;
  left: 16.666%;
  z-index: 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(189, 130, 0, .28), #bd8200 50%, rgba(189, 130, 0, .28));
  content: "";
}

.service-page--seo .seo-adv-item {
  position: relative;
  z-index: 1;
  padding: 0 clamp(28px, 4vw, 64px);
}

.service-page--seo .seo-adv-item:not(:last-child)::after {
  position: absolute;
  top: 44px;
  right: -5px;
  width: 9px;
  height: 9px;
  border-top: 2px solid #bd8200;
  border-right: 2px solid #bd8200;
  content: "";
  transform: rotate(45deg);
}

.service-page--seo .seo-adv-visual {
  display: grid;
  width: 112px;
  height: 96px;
  margin: 0 auto 26px;
  padding: 0 12px;
  color: #e8edf7;
  background: var(--seo-adv-surface);
  box-sizing: content-box;
  place-items: center;
}

.service-page--seo .seo-adv-visual svg {
  display: block;
  width: 100%;
  height: 100%;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 3;
}

.service-page--seo .seo-adv-visual .seo-adv-accent { stroke: #bd8200; }
.service-page--seo .seo-adv-visual .seo-adv-accent-fill {
  fill: #e0b431;
  stroke: none;
}

.service-page--seo .seo-adv-item h3 {
  color: #e8edf7;
  font-size: clamp(21px, 1.6vw, 26px);
  font-weight: 720;
}

.service-page--seo .seo-adv-divider {
  width: 36px;
  margin: 20px auto;
  background: rgba(232, 237, 247, .34);
}

.service-page--seo .seo-adv-item p {
  max-width: 340px;
  color: #aebbd0;
  line-height: 1.85;
  text-align: left;
}

.service-page--seo .seo-adv-action {
  display: flex;
  margin-top: 52px;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.service-page--seo .seo-adv-cta {
  display: inline-flex;
  height: 48px;
  padding: 0 26px;
  border: 1px solid rgba(227, 181, 46, .72);
  border-radius: var(--radius-box, 6px);
  align-items: center;
  justify-content: center;
  gap: 18px;
  background: var(--tech-gold, #e3b52e);
  color: #171208;
  font-size: var(--type-button, 15px);
  font-weight: 650;
  text-decoration: none;
  transition: border-color .25s ease, background .25s ease, color .25s ease;
  box-shadow: none;
}

.service-page--seo .seo-adv-cta:hover,
.service-page--seo .seo-adv-cta:focus-visible {
  border-color: var(--tech-gold-bright, #f2cd52);
  background: var(--tech-gold-bright, #f2cd52);
  color: #151004;
}

.service-page--seo .seo-adv-cta:focus-visible {
  outline: 2px solid var(--tech-gold-bright, #f2cd52);
  outline-offset: 4px;
}

.service-page--seo .seo-adv-action p {
  margin: 0;
  color: #94a3b8;
  font-size: 14px;
  line-height: 1.6;
  text-align: center;
}

@media (max-width: 900px) {
  .service-page--seo .nav-toggle {
    width: 44px;
    height: 44px;
  }

  .service-page--seo .seo-overview {
    width: calc(100% - 32px);
    padding: 42px 0 80px;
  }

  .service-page--seo .seo-module-card {
    min-height: 0;
  }

  .service-page--seo .seo-adv-grid {
    grid-template-columns: 1fr;
    max-width: 600px;
    margin-inline: auto;
  }

  .service-page--seo .seo-adv-grid::before {
    top: 40px;
    right: auto;
    bottom: 40px;
    left: 49px;
    width: 1px;
    height: auto;
    background: linear-gradient(180deg, rgba(189, 130, 0, .25), #bd8200 50%, rgba(189, 130, 0, .25));
  }

  .service-page--seo .seo-adv-item {
    display: grid;
    grid-template-columns: 98px minmax(0, 1fr);
    column-gap: 28px;
    padding: 34px 0;
    text-align: left;
  }

  .service-page--seo .seo-adv-item:first-child { padding-top: 0; }

  .service-page--seo .seo-adv-item:not(:last-child)::after { display: none; }

  .service-page--seo .seo-adv-item + .seo-adv-item {
    border-top: 0;
    border-left: 0;
  }

  .service-page--seo .seo-adv-visual {
    grid-row: 1 / 4;
    grid-column: 1;
    width: 88px;
    height: 76px;
    margin: 0;
    padding: 0 5px;
  }

  .service-page--seo .seo-adv-item h3,
  .service-page--seo .seo-adv-divider,
  .service-page--seo .seo-adv-item p { grid-column: 2; }

  .service-page--seo .seo-adv-divider { margin: 16px 0; }

  .service-page--seo .seo-adv-item p {
    max-width: none;
    margin: 0;
  }

}

@media (max-width: 640px) {
  .service-page--seo .seo-section-heading {
    margin-bottom: 34px;
  }

  .service-page--seo .seo-module-grid {
    gap: 18px;
  }

  .service-page--seo .seo-module-copy {
    padding: 24px 22px 28px;
  }

  .service-page--seo .seo-module-list { grid-template-columns: 1fr; }

  .service-page--seo .seo-advantages .seo-section-heading h2 {
    font-size: 28px;
    letter-spacing: -.03em;
  }

  .service-page--seo .seo-adv-grid::before { left: 43px; }

  .service-page--seo .seo-adv-item {
    grid-template-columns: 86px minmax(0, 1fr);
    column-gap: 18px;
    padding-block: 30px;
  }

  .service-page--seo .seo-adv-visual {
    width: 76px;
    height: 68px;
  }

  .service-page--seo .seo-adv-action {
    margin-top: 36px;
    padding-inline: 16px;
  }

  .service-page--seo .seo-adv-cta {
    width: 100%;
    max-width: 347px;
  }
}