@charset "utf-8";

:root {
  --okxpro-bg: #f5f7fb;
  --okxpro-surface: #ffffff;
  --okxpro-overlay: #f0f2f8;
  --okxpro-border: #e2e6ef;
  --okxpro-primary: #0b5cd7;
  --okxpro-primary-light: #3b82f6;
  --okxpro-primary-dark: #0948a8;
  --okxpro-cyan: #00b4d8;
  --okxpro-teal: #10b981;
  --okxpro-text: #1a1f36;
  --okxpro-text-secondary: #5a6072;
  --okxpro-text-muted: #8e94a5;
  --okxpro-shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --okxpro-shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --okxpro-shadow-lg: 0 12px 40px rgba(0,0,0,0.1);
  --okxpro-shadow-glow: 0 0 30px rgba(11,92,215,0.12);
  --okxpro-radius: 16px;
  --okxpro-radius-sm: 10px;
  --okxpro-radius-pill: 50px;
  --okxpro-font: -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;
  --okxpro-transition: 0.28s cubic-bezier(0.4,0,0.2,1);
}

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  scroll-padding-top: 90px;
}

body {
  font-family: var(--okxpro-font);
  background: var(--okxpro-bg);
  color: var(--okxpro-text);
  line-height: 1.72;
  min-height: 100vh;
  overflow-x: hidden;
}

.okxpro-topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 60px;
  background: rgba(255,255,255,0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--okxpro-border);
  display: flex;
  align-items: center;
  padding: 0 32px;
}

.okxpro-topbar-brand {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--okxpro-primary);
  text-decoration: none;
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.okxpro-topbar-brand-icon {
  width: 32px;
  height: 32px;
  background: var(--okxpro-primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0.8rem;
  font-weight: 900;
}

.okxpro-topbar-nav {
  display: flex;
  gap: 6px;
  list-style: none;
  margin-left: auto;
}

.okxpro-topbar-nav a {
  padding: 7px 16px;
  border-radius: var(--okxpro-radius-pill);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--okxpro-text-secondary);
  text-decoration: none;
  transition: var(--okxpro-transition);
}

.okxpro-topbar-nav a:hover {
  background: var(--okxpro-overlay);
  color: var(--okxpro-primary);
}

.okxpro-banner {
  margin-top: 60px;
  padding: 80px 32px 60px;
  background: linear-gradient(160deg, #eef2ff 0%, #e0f0ff 40%, #f0fdf6 100%);
  position: relative;
  overflow: hidden;
}

.okxpro-banner-dots {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(11,92,215,0.06) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.okxpro-banner-inner {
  position: relative;
  z-index: 1;
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
}

.okxpro-banner-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: #fff;
  border: 1px solid var(--okxpro-border);
  border-radius: var(--okxpro-radius-pill);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--okxpro-primary);
  margin-bottom: 24px;
  box-shadow: var(--okxpro-shadow-sm);
  letter-spacing: 0.5px;
}

.okxpro-banner-chip-dot {
  width: 7px;
  height: 7px;
  background: var(--okxpro-teal);
  border-radius: 50%;
  animation: okxpro-pulse 2s infinite;
}

@keyframes okxpro-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.okxpro-banner h1 {
  font-size: 2.8rem;
  font-weight: 900;
  line-height: 1.2;
  color: var(--okxpro-text);
  margin-bottom: 18px;
  letter-spacing: -1px;
}

.okxpro-banner h1 mark {
  background: none;
  color: var(--okxpro-primary);
}

.okxpro-banner-sub {
  font-size: 1.1rem;
  color: var(--okxpro-text-secondary);
  margin-bottom: 32px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

.okxpro-banner-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.okxpro-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: var(--okxpro-radius-pill);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--okxpro-transition);
  border: none;
  cursor: pointer;
}

.okxpro-btn-fill {
  background: var(--okxpro-primary);
  color: #fff;
  box-shadow: 0 4px 16px rgba(11,92,215,0.3);
}

.okxpro-btn-fill:hover {
  background: var(--okxpro-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(11,92,215,0.35);
}

.okxpro-btn-ghost {
  border: 2px solid var(--okxpro-border);
  color: var(--okxpro-text);
  background: #fff;
}

.okxpro-btn-ghost:hover {
  border-color: var(--okxpro-primary);
  color: var(--okxpro-primary);
}

.okxpro-quick-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  padding: 28px 32px;
  max-width: 1100px;
  margin: 0 auto;
}

.okxpro-quick-nav a {
  padding: 8px 18px;
  border-radius: var(--okxpro-radius-pill);
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--okxpro-text-secondary);
  text-decoration: none;
  background: var(--okxpro-surface);
  border: 1px solid var(--okxpro-border);
  transition: var(--okxpro-transition);
  white-space: nowrap;
}

.okxpro-quick-nav a:hover {
  border-color: var(--okxpro-primary);
  color: var(--okxpro-primary);
  background: #f0f5ff;
}

.okxpro-block {
  max-width: 1100px;
  margin: 0 auto;
  padding: 70px 32px;
}

.okxpro-block-alt {
  background: var(--okxpro-surface);
  border-top: 1px solid var(--okxpro-border);
  border-bottom: 1px solid var(--okxpro-border);
}

.okxpro-block-header {
  margin-bottom: 48px;
}

.okxpro-block-eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 2.5px;
  color: var(--okxpro-primary);
  text-transform: uppercase;
  margin-bottom: 12px;
  padding: 3px 12px;
  background: #eef3ff;
  border-radius: 4px;
}

.okxpro-block-header h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--okxpro-text);
  margin-bottom: 10px;
  letter-spacing: -0.5px;
  line-height: 1.3;
}

.okxpro-block-header h3 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--okxpro-text);
  margin-bottom: 8px;
  letter-spacing: -0.3px;
  line-height: 1.35;
}

.okxpro-block-lead {
  font-size: 1rem;
  color: var(--okxpro-text-secondary);
  max-width: 600px;
  line-height: 1.75;
}

.okxpro-hr {
  width: 48px;
  height: 4px;
  background: linear-gradient(90deg, var(--okxpro-primary), var(--okxpro-cyan));
  border-radius: 2px;
  margin: 16px 0 28px;
}

.okxpro-feature-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.okxpro-feature-tile {
  background: var(--okxpro-surface);
  border: 1px solid var(--okxpro-border);
  border-radius: var(--okxpro-radius);
  padding: 32px 28px;
  transition: var(--okxpro-transition);
  position: relative;
  overflow: hidden;
}

.okxpro-feature-tile:hover {
  box-shadow: var(--okxpro-shadow-lg);
  border-color: transparent;
  transform: translateY(-3px);
}

.okxpro-feature-tile-num {
  position: absolute;
  top: 16px;
  right: 20px;
  font-size: 3rem;
  font-weight: 900;
  color: #f0f3fa;
  line-height: 1;
  pointer-events: none;
}

.okxpro-feature-tile-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: linear-gradient(135deg, #eef3ff, #e0ecff);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 18px;
}

.okxpro-feature-tile h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--okxpro-text);
}

.okxpro-feature-tile p {
  font-size: 0.92rem;
  color: var(--okxpro-text-secondary);
  line-height: 1.7;
}

.okxpro-bullet-list {
  list-style: none;
  padding: 0;
  margin-top: 14px;
}

.okxpro-bullet-list li {
  padding: 5px 0 5px 22px;
  position: relative;
  font-size: 0.88rem;
  color: var(--okxpro-text-muted);
}

.okxpro-bullet-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 13px;
  width: 8px;
  height: 8px;
  background: var(--okxpro-primary-light);
  border-radius: 50%;
}

.okxpro-panel {
  background: var(--okxpro-surface);
  border: 1px solid var(--okxpro-border);
  border-radius: var(--okxpro-radius);
  padding: 36px 32px;
  margin: 24px 0;
  box-shadow: var(--okxpro-shadow-sm);
}

.okxpro-panel h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--okxpro-text);
  margin-bottom: 12px;
}

.okxpro-panel p {
  color: var(--okxpro-text-secondary);
  font-size: 0.94rem;
  line-height: 1.8;
}

.okxpro-side-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
  margin: 24px 0;
}

.okxpro-metric-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin: 32px 0;
}

.okxpro-metric-card {
  text-align: center;
  padding: 24px 16px;
  background: var(--okxpro-surface);
  border: 1px solid var(--okxpro-border);
  border-radius: var(--okxpro-radius-sm);
}

.okxpro-metric-val {
  font-size: 2rem;
  font-weight: 900;
  color: var(--okxpro-primary);
  line-height: 1.2;
  letter-spacing: -1px;
}

.okxpro-metric-lbl {
  font-size: 0.84rem;
  color: var(--okxpro-text-muted);
  margin-top: 4px;
}

.okxpro-data-table-wrap {
  overflow-x: auto;
  margin: 28px 0;
  border-radius: var(--okxpro-radius);
  border: 1px solid var(--okxpro-border);
  box-shadow: var(--okxpro-shadow-sm);
}

.okxpro-data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  background: var(--okxpro-surface);
}

.okxpro-data-table thead {
  background: #f8fafd;
}

.okxpro-data-table th {
  padding: 14px 20px;
  text-align: left;
  font-weight: 700;
  color: var(--okxpro-text);
  border-bottom: 2px solid var(--okxpro-border);
  font-size: 0.84rem;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.okxpro-data-table td {
  padding: 13px 20px;
  border-bottom: 1px solid var(--okxpro-border);
  color: var(--okxpro-text-secondary);
}

.okxpro-data-table tbody tr:hover td {
  background: #fafcff;
}

.okxpro-data-table tbody tr:last-child td {
  border-bottom: none;
}

.okxpro-timeline {
  margin: 32px 0;
  padding-left: 28px;
  border-left: 2px solid var(--okxpro-border);
  position: relative;
}

.okxpro-timeline-item {
  position: relative;
  padding: 0 0 32px 28px;
}

.okxpro-timeline-item:last-child {
  padding-bottom: 0;
}

.okxpro-timeline-item::before {
  content: '';
  position: absolute;
  left: -35px;
  top: 4px;
  width: 14px;
  height: 14px;
  background: var(--okxpro-surface);
  border: 3px solid var(--okxpro-primary);
  border-radius: 50%;
}

.okxpro-timeline-item h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--okxpro-text);
  margin-bottom: 6px;
}

.okxpro-timeline-item p {
  font-size: 0.92rem;
  color: var(--okxpro-text-secondary);
  line-height: 1.7;
}

.okxpro-tag-cluster {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0;
}

.okxpro-tag {
  padding: 5px 14px;
  border-radius: var(--okxpro-radius-pill);
  font-size: 0.8rem;
  font-weight: 600;
  border: 1px solid var(--okxpro-border);
  color: var(--okxpro-text-secondary);
  background: var(--okxpro-surface);
  transition: var(--okxpro-transition);
}

.okxpro-tag:hover {
  border-color: var(--okxpro-primary);
  color: var(--okxpro-primary);
  background: #f0f5ff;
}

.okxpro-faq-list {
  margin: 28px 0;
}

.okxpro-faq-item {
  border: 1px solid var(--okxpro-border);
  border-radius: var(--okxpro-radius-sm);
  margin-bottom: 10px;
  background: var(--okxpro-surface);
  overflow: hidden;
  transition: var(--okxpro-transition);
}

.okxpro-faq-item summary {
  padding: 16px 22px;
  font-weight: 700;
  font-size: 0.98rem;
  cursor: pointer;
  color: var(--okxpro-text);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: color 0.2s;
}

.okxpro-faq-item summary::-webkit-details-marker {
  display: none;
}

.okxpro-faq-item summary:hover {
  color: var(--okxpro-primary);
}

.okxpro-faq-item summary::after {
  content: '▾';
  font-size: 1rem;
  color: var(--okxpro-text-muted);
  transition: transform 0.25s;
}

.okxpro-faq-item[open] summary::after {
  transform: rotate(180deg);
  color: var(--okxpro-primary);
}

.okxpro-faq-item[open] {
  border-color: var(--okxpro-primary);
  box-shadow: var(--okxpro-shadow-glow);
}

.okxpro-faq-body {
  padding: 0 22px 18px;
  font-size: 0.92rem;
  color: var(--okxpro-text-secondary);
  line-height: 1.8;
}

.okxpro-site-footer {
  background: var(--okxpro-text);
  color: #c5c9d6;
  padding: 48px 32px 28px;
  margin-top: 40px;
}

.okxpro-site-footer-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
}

.okxpro-site-footer-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
}

.okxpro-site-footer-col a,
.okxpro-site-footer-col p {
  font-size: 0.84rem;
  color: #a0a6b8;
  text-decoration: none;
  display: block;
  margin-bottom: 7px;
  line-height: 1.6;
  transition: color 0.2s;
}

.okxpro-site-footer-col a:hover {
  color: #fff;
}

.okxpro-site-footer-bar {
  max-width: 1100px;
  margin: 28px auto 0;
  padding-top: 18px;
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
  font-size: 0.8rem;
  color: #7a7f90;
}

@media (max-width: 768px) {
  .okxpro-banner h1 {
    font-size: 1.8rem;
  }

  .okxpro-block-header h2 {
    font-size: 1.5rem;
  }

  .okxpro-side-layout {
    grid-template-columns: 1fr;
  }

  .okxpro-feature-row {
    grid-template-columns: 1fr;
  }

  .okxpro-banner {
    padding: 50px 20px 40px;
  }

  .okxpro-block {
    padding: 40px 18px;
  }

  .okxpro-topbar {
    padding: 0 16px;
  }
}