.seo-header {
  background: rgba(255, 255, 255, 0.92);
}

.seo-page {
  background: #f5f7fa;
  color: #1f2937;
  padding-top: 84px;
}

.seo-hero {
  background:
    linear-gradient(135deg, rgba(22, 93, 255, 0.12), rgba(255, 122, 0, 0.08)),
    #ffffff;
  border-bottom: 1px solid rgba(22, 93, 255, 0.08);
  padding: 64px 0 42px;
}

.seo-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 24px;
  align-items: stretch;
}

.seo-kicker {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  background: rgba(22, 93, 255, 0.1);
  color: #165dff;
  font-size: 14px;
  font-weight: 700;
  padding: 8px 14px;
}

.seo-hero h1 {
  color: #102033;
  font-size: 42px;
  line-height: 1.22;
  letter-spacing: 0;
  margin: 18px 0 16px;
}

.seo-hero p {
  color: #526173;
  font-size: 17px;
  line-height: 1.8;
  max-width: 760px;
  margin: 0;
}

.seo-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.seo-tags span {
  border: 1px solid rgba(22, 93, 255, 0.16);
  border-radius: 999px;
  background: #ffffff;
  color: #165dff;
  font-size: 14px;
  font-weight: 700;
  padding: 8px 12px;
}

.seo-side-card,
.seo-sticky-card,
.seo-article-card {
  border-radius: 16px;
  background: #ffffff;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.seo-side-card {
  padding: 26px;
}

.seo-side-card strong,
.seo-sticky-card h2 {
  display: block;
  color: #102033;
  font-size: 22px;
  margin-bottom: 12px;
}

.seo-side-card p,
.seo-sticky-card p {
  color: #667085;
  font-size: 15px;
  line-height: 1.75;
}

.seo-side-card a,
.seo-sticky-card a {
  display: inline-flex;
  justify-content: center;
  width: 100%;
  border-radius: 16px;
  background: linear-gradient(135deg, #ff8a1f, #ff6400);
  color: #ffffff;
  font-weight: 800;
  padding: 14px 18px;
  margin-top: 16px;
  box-shadow: 0 12px 24px rgba(255, 122, 0, 0.24);
}

.seo-content-section {
  padding: 34px 0;
}

.seo-content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 24px;
  align-items: start;
}

.seo-article-card {
  padding: 34px;
}

.seo-article-card h2 {
  color: #102033;
  font-size: 26px;
  line-height: 1.35;
  margin: 0 0 16px;
}

.seo-article-card h2:not(:first-child) {
  margin-top: 34px;
}

.seo-article-card p,
.seo-article-card li {
  color: #4b5b6d;
  font-size: 16px;
  line-height: 1.9;
}

.seo-article-card ul,
.seo-article-card ol {
  padding-left: 22px;
  margin: 12px 0 0;
}

.seo-article-card li + li {
  margin-top: 8px;
}

.seo-warning-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 18px 0 0;
}

.seo-warning-grid div {
  border: 1px solid rgba(22, 93, 255, 0.1);
  border-radius: 16px;
  background: #f8fbff;
  padding: 18px;
}

.seo-warning-grid strong {
  display: block;
  color: #165dff;
  font-size: 17px;
  margin-bottom: 8px;
}

.seo-warning-grid span {
  color: #526173;
  font-size: 14px;
  line-height: 1.7;
}

.seo-disclaimer {
  border-left: 4px solid #ff7a00;
  border-radius: 12px;
  background: #fff7ed;
  margin-top: 34px;
  padding: 18px 20px;
}

.seo-disclaimer strong {
  color: #b45309;
}

.seo-disclaimer p {
  margin: 8px 0 0;
  color: #7c4a03;
}

.seo-sticky-card {
  position: sticky;
  top: 104px;
  padding: 24px;
}

.seo-sticky-card div {
  border-top: 1px solid #e8edf5;
  margin-top: 22px;
  padding-top: 18px;
}

.seo-sticky-card span {
  color: #165dff;
  font-weight: 800;
}

.seo-sticky-card div p {
  border-radius: 12px;
  background: #f5f7fa;
  color: #344054;
  margin: 10px 0 0;
  padding: 10px 12px;
}

.seo-faq-section {
  padding: 10px 0 48px;
}

.seo-faq-section h2 {
  color: #102033;
  font-size: 30px;
  margin: 0 0 18px;
}

.seo-faq-list {
  display: grid;
  gap: 12px;
}

.seo-faq-list details {
  border-radius: 16px;
  background: #ffffff;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  padding: 18px 22px;
}

.seo-faq-list summary {
  cursor: pointer;
  color: #102033;
  font-size: 17px;
  font-weight: 800;
}

.seo-faq-list p {
  color: #526173;
  line-height: 1.8;
  margin: 12px 0 0;
}

.platform-link-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.seo-list-head {
  margin: 0 0 18px;
}

.seo-list-head:not(:first-child) {
  margin-top: 36px;
}

.seo-list-head span {
  color: #165dff;
  font-size: 14px;
  font-weight: 800;
}

.seo-list-head h2 {
  color: #102033;
  font-size: 28px;
  line-height: 1.35;
  margin: 8px 0 0;
}

.general-link-grid {
  margin-bottom: 8px;
}

.platform-link-grid a {
  display: grid;
  gap: 8px;
  border: 1px solid rgba(22, 93, 255, 0.1);
  border-radius: 16px;
  background: #ffffff;
  color: #1f2937;
  padding: 20px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.platform-link-grid a:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 30px rgba(22, 93, 255, 0.12);
}

.platform-link-grid strong {
  color: #165dff;
  font-size: 19px;
}

.platform-link-grid span {
  color: #667085;
  line-height: 1.7;
}

.seo-footer {
  background: #102033;
  color: #ffffff;
  padding: 26px 0;
}

.seo-footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.seo-footer-main {
  padding-bottom: 14px;
}

.seo-footer-record {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.68);
  font-size: 13px;
  padding-top: 14px;
}

.seo-footer span {
  color: rgba(255, 255, 255, 0.72);
}

.seo-footer a {
  color: #ffffff;
  font-weight: 800;
}

@media (max-width: 900px) {
  .seo-page {
    padding-top: 72px;
  }

  .seo-hero {
    padding: 42px 0 28px;
  }

  .seo-hero-grid,
  .seo-content-grid {
    grid-template-columns: 1fr;
  }

  .seo-hero h1 {
    font-size: 30px;
  }

  .seo-article-card {
    padding: 24px;
  }

  .seo-warning-grid,
  .platform-link-grid {
    grid-template-columns: 1fr;
  }

  .seo-sticky-card {
    position: static;
  }

  .seo-footer .container {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .seo-footer-main,
  .seo-footer-record {
    gap: 8px;
  }

  .seo-footer-record {
    font-size: 12px;
  }
}

@media (max-width: 640px) {
  .seo-page {
    padding-top: 60px;
  }

  .seo-header .header-inner {
    height: 60px;
    min-height: 60px;
  }

  .seo-header .brand-shield {
    width: 36px;
    height: 36px;
  }

  .seo-header .brand-text strong {
    font-size: 19px;
  }

  .seo-header .brand-text small {
    max-width: 140px;
    overflow: hidden;
    font-size: 10px;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .seo-header .header-btn {
    height: 38px;
    min-width: 96px;
    border-radius: 12px;
    font-size: 12px;
    padding: 0 10px;
  }

  .seo-hero {
    padding: 34px 0 24px;
  }

  .seo-hero h1 {
    font-size: 28px;
    line-height: 1.22;
    margin: 14px 0 12px;
  }

  .seo-hero p {
    font-size: 15px;
    line-height: 1.75;
  }

  .seo-tags {
    gap: 8px;
    margin-top: 18px;
  }

  .seo-tags span {
    font-size: 13px;
    padding: 7px 10px;
  }

  .seo-side-card,
  .seo-sticky-card {
    border-radius: 16px;
    padding: 20px;
  }

  .seo-content-section {
    padding: 22px 0;
  }

  .seo-content-grid {
    gap: 16px;
  }

  .seo-article-card {
    border-radius: 16px;
    padding: 22px;
  }

  .seo-article-card h2 {
    font-size: 23px;
  }

  .seo-article-card h2:not(:first-child) {
    margin-top: 28px;
  }

  .seo-article-card p,
  .seo-article-card li {
    font-size: 15px;
    line-height: 1.85;
  }

  .seo-warning-grid div {
    border-radius: 14px;
    padding: 16px;
  }

  .seo-list-head {
    margin-bottom: 14px;
  }

  .seo-list-head h2 {
    font-size: 24px;
  }

  .platform-link-grid {
    gap: 12px;
  }

  .platform-link-grid a {
    border-radius: 14px;
    padding: 16px;
  }

  .platform-link-grid strong {
    font-size: 17px;
  }

  .platform-link-grid span {
    font-size: 14px;
  }

  .seo-faq-section h2 {
    font-size: 24px;
  }

  .seo-faq-list details {
    border-radius: 14px;
    padding: 16px;
  }
}

@media (max-width: 380px) {
  .seo-header .brand-text small {
    display: none;
  }

  .seo-header .header-btn {
    min-width: 84px;
  }

  .seo-hero h1 {
    font-size: 25px;
  }

  .seo-article-card {
    padding: 18px;
  }
}