/* BitMart guide block — external styles, seo- prefix */
.seo-wrap {
  --seo-accent: #13c2c2;
  --seo-white: #ffffff;
  --seo-text: #1a1a1a;
  --seo-muted: #5c5c5c;
  --seo-border: #d9f2f2;
  --seo-accent-soft: #e6faf9;
  --seo-accent-dark: #0e7b7b;
  --seo-link: #08979c;
  --seo-radius: 12px;
  font-family: "PingFang SC", "Microsoft YaHei", "Heiti SC", sans-serif;
  color: var(--seo-text);
  background: var(--seo-white);
  line-height: 1.75;
  max-width: 1100px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 0;
  box-sizing: border-box;


  margin-top: 700px;
}

.seo-wrap *,
.seo-wrap *::before,
.seo-wrap *::after {
  box-sizing: border-box;
}

.seo-skip {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.seo-hero {
  text-align: center;
  padding: 1.5rem 1rem 2rem;
  border-bottom: 3px solid var(--seo-accent);
  margin-bottom: 2rem;
}

.seo-hero h1.seo-h1 {
  font-size: clamp(1.35rem, 4vw, 1.85rem);
  font-weight: 700;
  margin: 0 0 0.75rem;
  color: var(--seo-text);
  letter-spacing: 0.02em;
}

.seo-lead {
  margin: 0 auto;
  max-width: 42em;
  font-size: 1rem;
  color: var(--seo-muted);
}

.seo-share {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  align-items: center;
  margin-top: 1.25rem;
}

.seo-share-label {
  font-size: 0.875rem;
  color: var(--seo-muted);
  margin-right: 0.25rem;
}

.seo-share a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.5rem;
  height: 2.5rem;
  padding: 0 0.75rem;
  border-radius: 8px;
  background: var(--seo-white);
  border: 1px solid var(--seo-border);
  color: var(--seo-text);
  text-decoration: none;
  font-size: 0.8125rem;
  transition: border-color 0.2s, background 0.2s, color 0.2s;
}

.seo-share a:hover,
.seo-share a:focus-visible {
  border-color: var(--seo-accent);
  background: var(--seo-accent-soft);
  color: var(--seo-accent-dark);
  outline: none;
}

.seo-toc-box {
  background: linear-gradient(180deg, #f0fcfc 0%, var(--seo-white) 100%);
  border: 1px solid var(--seo-border);
  border-radius: var(--seo-radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 2.5rem;
}

.seo-toc-title {
  font-size: 1.125rem;
  font-weight: 700;
  margin: 0 0 1rem;
  color: var(--seo-text);
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--seo-accent);
}

.seo-toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  columns: 1;
}

@media (min-width: 640px) {
  .seo-toc-list {
    columns: 2;
    column-gap: 1.5rem;
  }
}

.seo-toc-list li {
  break-inside: avoid;
  margin-bottom: 0.5rem;
}

.seo-toc-list a {
  color: var(--seo-link);
  text-decoration: none;
  font-size: 0.9375rem;
  border-left: 3px solid transparent;
  padding-left: 0.5rem;
  display: inline-block;
}

.seo-toc-list a:hover,
.seo-toc-list a:focus-visible {
  color: var(--seo-text);
  border-left-color: var(--seo-accent);
  outline: none;
}

.seo-section {
  margin-bottom: 2.75rem;
  scroll-margin-top: 1rem;
}

.seo-section h2.seo-h2 {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 0 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--seo-accent);
  color: var(--seo-text);
}

.seo-section h3.seo-h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 1.5rem 0 0.75rem;
  color: #2d2d2d;
}

/* 视觉层级与旧 h4–h6 一致，用于降低标题标签密度、改善标题与正文比例 */
.seo-section p.seo-subhead {
  font-size: 1.05rem;
  font-weight: 600;
  margin: 1.25rem 0 0.5rem;
  color: #3d3d3d;
}

.seo-section p.seo-subhead--sm {
  font-size: 0.98rem;
  font-weight: 600;
  margin: 1rem 0 0.4rem;
  color: var(--seo-muted);
}

.seo-section p.seo-subhead--xs {
  font-size: 0.9rem;
  font-weight: 600;
  margin: 0.85rem 0 0.35rem;
  color: var(--seo-muted);
  letter-spacing: 0.02em;
}

.seo-intro {
  text-align: left;
  max-width: 48em;
  margin: 1.25rem auto 0;
}

.seo-intro p {
  font-size: 0.9375rem;
  color: var(--seo-muted);
  margin: 0 0 1rem;
  line-height: 1.8;
}

.seo-footer-title {
  font-size: 1.05rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
  color: var(--seo-text);
}

.seo-section p {
  margin: 0 0 1rem;
  font-size: 1rem;
  color: var(--seo-text);
}

.seo-img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: var(--seo-radius);
  margin: 1.25rem auto;
  border: 1px solid var(--seo-border);
}

.seo-img-caption {
  text-align: center;
  font-size: 0.875rem;
  color: var(--seo-muted);
  margin: -0.5rem 0 1.25rem;
}

.seo-features {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.65rem;
}

@media (min-width: 768px) {
  .seo-features {
    grid-template-columns: 1fr 1fr;
  }
}

.seo-features li {
  position: relative;
  padding: 0.65rem 0.65rem 0.65rem 1.75rem;
  background: #fafafa;
  border-radius: 8px;
  border: 1px solid var(--seo-border);
  font-size: 0.9375rem;
}

.seo-features li::before {
  content: "";
  position: absolute;
  left: 0.65rem;
  top: 0.85rem;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--seo-accent);
}

.seo-faq-item {
  border-bottom: 1px solid var(--seo-border);
  padding: 1rem 0;
}

.seo-faq-item:last-child {
  border-bottom: none;
}

.seo-faq-q {
  font-weight: 600;
  margin: 0 0 0.5rem;
  color: var(--seo-text);
  font-size: 1rem;
}

.seo-faq-a {
  margin: 0;
  color: var(--seo-muted);
  font-size: 0.9375rem;
}

.seo-review {
  padding: 1rem;
  margin-bottom: 1rem;
  background: var(--seo-accent-soft);
  border-radius: var(--seo-radius);
  border: 1px solid var(--seo-border);
}

.seo-review-meta {
  font-size: 0.8125rem;
  color: var(--seo-muted);
  margin-bottom: 0.35rem;
}

.seo-review p {
  margin: 0;
  font-size: 0.9375rem;
}

.seo-links-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1rem 0;
}

.seo-links-grid a {
  color: var(--seo-link);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-size: 0.9375rem;
}

.seo-links-grid a:hover {
  color: var(--seo-text);
}

.seo-external {
  margin-top: 1.5rem;
  padding: 1rem;
  background: #f9f9f9;
  border-radius: var(--seo-radius);
  border: 1px solid var(--seo-border);
}

.seo-external h3.seo-h3,
.seo-external > p.seo-subhead:first-of-type {
  margin-top: 0;
}

.seo-external ul {
  margin: 0;
  padding-left: 1.25rem;
}

.seo-external li {
  margin-bottom: 0.35rem;
}

.seo-external a {
  color: var(--seo-accent-dark);
  word-break: break-all;
}

.seo-footer {
  margin-top: 3rem;
  padding: 2rem 1.25rem 2.5rem;
  background: linear-gradient(180deg, #f0fcfc 0%, #fff 50%);
  border-top: 3px solid var(--seo-accent);
  border-radius: var(--seo-radius) var(--seo-radius) 0 0;
}

.seo-footer-grid {
  display: grid;
  gap: 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
}

@media (min-width: 720px) {
  .seo-footer-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.seo-footer-block h3.seo-h3,
.seo-footer-block .seo-footer-title {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  border: none;
  padding: 0;
}

.seo-footer-block p,
.seo-footer-block a {
  margin: 0 0 0.35rem;
  font-size: 0.9375rem;
  color: var(--seo-muted);
}

.seo-footer-block a {
  color: var(--seo-link);
  text-decoration: none;
}

.seo-footer-block a:hover {
  text-decoration: underline;
}

.seo-social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.seo-copy {
  text-align: center;
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--seo-border);
  font-size: 0.875rem;
  color: var(--seo-muted);
}

.seo-internal {
  margin: 1rem 0;
  padding: 1rem;
  border-left: 4px solid var(--seo-accent);
  background: var(--seo-accent-soft);
  font-size: 0.9375rem;
}

.seo-internal a {
  color: var(--seo-accent-dark);
  margin-right: 0.75rem;
  white-space: nowrap;
}

@media (max-width: 480px) {
  .seo-wrap {
    padding-left: 1rem;
    padding-right: 1rem;
  }
}