body {
  margin: 0;
  background: #f5f7fb;
  color: #1f2937;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.7;
}

a {
  color: #1d4ed8;
  text-decoration: none;
}

a:hover,
a:active {
  color: #1e3a8a;
}

img {
  max-width: 100%;
  height: auto;
}

input[type="text"],
input[type="email"],
input[type="url"],
input[type="password"],
textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #d8dee9;
  border-radius: 12px;
  background: #fff;
  box-sizing: border-box;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0 0 16px;
  color: #0f172a;
  line-height: 1.3;
}

p {
  margin: 0 0 16px;
}

ul,
ol {
  margin: 0;
  padding-left: 20px;
}

table {
  width: 100%;
  border-collapse: collapse;
}

#header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid #e5e7eb;
}

.header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 0 16px;
}

.site-brand {
  min-width: 0;
}

#logo {
  display: inline-block;
  color: #0f172a;
  font-size: 30px;
  font-weight: 800;
}

#logo img {
  max-height: 54px;
}

.description {
  margin: 6px 0 0;
  color: #64748b;
  font-size: 14px;
}

.header-search {
  width: 320px;
  max-width: 100%;
}

#search {
  position: relative;
}

#search input {
  padding-right: 92px;
}

#search .submit {
  position: absolute;
  right: 6px;
  top: 6px;
  border: none;
  border-radius: 10px;
  padding: 8px 14px;
  background: #0f172a;
  color: #fff;
  cursor: pointer;
}

#nav-menu {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 0 0 18px;
}

#nav-menu a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border-radius: 999px;
  background: #eef2ff;
  color: #334155;
  font-size: 14px;
  font-weight: 600;
}

#nav-menu a:hover,
#nav-menu .current {
  background: #1d4ed8;
  color: #fff;
}

#body {
  padding: 32px 0 64px;
}

.hero-section,
.page-hero,
.content-section,
.cta-box,
.risk-box,
.widget,
.post,
.guide-card,
.hero-panel__card,
.info-card,
.platform-card,
.bullet-panel,
.faq-item {
  border: 1px solid #e5e7eb;
  border-radius: 24px;
  background: #fff;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.05);
}

.hero-section {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(280px, 0.9fr);
  gap: 28px;
  padding: 40px;
  margin-bottom: 28px;
}

.hero-copy h1,
.page-hero h1 {
  font-size: 42px;
  margin-bottom: 18px;
}

.hero-copy p,
.page-summary {
  font-size: 18px;
  color: #475569;
}

.section-eyebrow {
  display: inline-block;
  margin-bottom: 14px;
  color: #2563eb;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-panel__card {
  padding: 28px;
  background: linear-gradient(180deg, #eff6ff 0%, #ffffff 100%);
}

.hero-panel__card ul li {
  margin-bottom: 10px;
}

.inline-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.btn,
.text-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  padding: 12px 18px;
  font-weight: 700;
}

.btn-primary {
  background: #1d4ed8;
  color: #fff;
}

.btn-primary:hover {
  background: #1e40af;
  color: #fff;
}

.btn-secondary {
  border: 1px solid #bfdbfe;
  background: #eff6ff;
  color: #1d4ed8;
}

.btn-secondary:hover {
  background: #dbeafe;
  color: #1e3a8a;
}

.text-link {
  color: #0f172a;
  padding-left: 0;
  padding-right: 0;
}

.content-section,
.cta-box,
.risk-box,
.post,
.page-hero {
  padding: 32px;
  margin-bottom: 28px;
}

.page-hero--compact {
  padding-bottom: 24px;
}

.section-heading {
  margin-bottom: 22px;
}

.section-heading p {
  max-width: 760px;
  color: #64748b;
}

.platform-grid,
.info-grid,
.guide-grid {
  display: grid;
  gap: 20px;
}

.platform-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.info-grid--three,
.guide-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.platform-card,
.info-card,
.guide-card {
  padding: 24px;
}

.platform-card ul li,
.bullet-panel li,
.step-list li {
  margin-bottom: 10px;
}

.platform-badge {
  display: inline-flex;
  margin-bottom: 12px;
  border-radius: 999px;
  padding: 6px 12px;
  background: #e0e7ff;
  color: #3730a3;
  font-size: 13px;
  font-weight: 700;
}

.platform-card--binance {
  background: linear-gradient(180deg, #fff 0%, #fffbea 100%);
}

.platform-card--okx {
  background: linear-gradient(180deg, #fff 0%, #ecfeff 100%);
}

.compare-table-wrap {
  overflow-x: auto;
}

.compare-table th,
.compare-table td {
  border: 1px solid #e5e7eb;
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
}

.compare-table thead th {
  background: #eff6ff;
}

.cta-box {
  display: flex;
  flex-direction: column;
  gap: 18px;
  background: linear-gradient(135deg, #eff6ff 0%, #ffffff 100%);
}

.cta-box__content p,
.cta-box__note {
  color: #475569;
}

.cta-box__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.guide-card__meta {
  display: inline-block;
  margin-bottom: 12px;
  color: #64748b;
  font-size: 13px;
}

.guide-card h3 {
  font-size: 22px;
}

.guide-card p {
  color: #64748b;
}

.guide-card__link {
  font-weight: 700;
}

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

.faq-item {
  padding: 0;
  overflow: hidden;
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 22px;
  font-weight: 700;
}

.faq-item p {
  margin: 0;
  padding: 0 22px 20px;
  color: #475569;
}

.risk-box {
  background: linear-gradient(180deg, #fff7ed 0%, #ffffff 100%);
}

.post-title {
  font-size: 34px;
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0 0 22px;
  padding: 0;
  color: #64748b;
  font-size: 14px;
  list-style: none;
}

.post-content,
.rich-content {
  color: #334155;
}

.rich-content h2,
.rich-content h3 {
  margin-top: 28px;
}

.rich-content table {
  margin: 18px 0;
}

.step-list {
  display: grid;
  gap: 16px;
  padding-left: 20px;
}

.bullet-panel {
  padding: 24px;
}

.post-near {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
}

.post-near li {
  margin-bottom: 10px;
}

#secondary {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.widget {
  padding: 22px;
}

.widget-title {
  margin-bottom: 14px;
  font-size: 18px;
}

.widget-list {
  margin: 0;
  padding-left: 18px;
}

.widget-list li {
  margin-bottom: 10px;
}

.widget-list--nav {
  list-style: none;
  padding-left: 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px 0 42px;
  color: #64748b;
  font-size: 14px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-content: flex-start;
}

.archive-title {
  margin-bottom: 20px;
  color: #64748b;
  font-size: 18px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media screen and (max-width: 980px) {
  .hero-section,
  .platform-grid,
  .info-grid--three,
  .guide-grid,
  .topic-group-grid,
  .footer-inner {
    grid-template-columns: 1fr;
    display: grid;
  }

  .header-bar {
    flex-direction: column;
    align-items: flex-start;
  }

  .header-search {
    width: 100%;
  }
}

@media screen and (max-width: 768px) {
  #body {
    padding-top: 22px;
  }

  .hero-section,
  .content-section,
  .cta-box,
  .risk-box,
  .post,
  .page-hero,
  .platform-card,
  .info-card,
  .guide-card,
  .widget,
  .hero-panel__card {
    padding: 22px;
    border-radius: 18px;
  }

  .hero-copy h1,
  .page-hero h1,
  .post-title {
    font-size: 30px;
  }

  #nav-menu {
    gap: 10px;
  }

  #nav-menu a {
    width: calc(50% - 5px);
    box-sizing: border-box;
  }

  .cta-box__actions,
  .inline-actions {
    flex-direction: column;
  }

  .btn,
  .text-link {
    width: 100%;
    box-sizing: border-box;
  }
}


.topic-group-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.topic-group {
  border: 1px solid #e5e7eb;
  border-radius: 24px;
  background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.05);
  padding: 24px;
}

.topic-group h3 {
  margin-bottom: 14px;
  font-size: 22px;
}

.topic-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.topic-list li {
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px dashed #dbe4f0;
}

.topic-list li:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.topic-list a {
  color: #0f172a;
  font-weight: 600;
}

.topic-list a:hover {
  color: #1d4ed8;
}


.article-recommend {
  margin-top: 28px;
}

.article-recommend__hint {
  color: #64748b;
}

.article-recommend__actions {
  margin-top: 18px;
}