:root {
  --dybiz-bg: #0a0a0c;
  --dybiz-surface: #141417;
  --dybiz-surface2: #1c1c20;
  --dybiz-border: #2a2a30;
  --dybiz-text: #f0f0f5;
  --dybiz-muted: #9a9aa5;
  --dybiz-accent: #ff2d55;
  --dybiz-accent2: #00c4b4;
  --dybiz-radius: 6px;
}
* { margin:0; padding:0; box-sizing:border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--dybiz-bg);
  color: var(--dybiz-text);
  line-height: 1.75;
  font-size: 15px;
}
.dybiz-wrapper { max-width: 1180px; margin: 0 auto; padding: 0 20px; }
.dybiz-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10,10,12,0.96); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--dybiz-border);
}
.dybiz-header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 0; max-width: 1180px; margin: 0 auto; padding-left:20px; padding-right:20px;
}
.dybiz-logo {
  font-size: 21px; font-weight: 700; letter-spacing: -0.5px;
  color: var(--dybiz-text);
}
.dybiz-nav {
  display: flex; align-items: center; gap: 32px;
}
.dybiz-nav a {
  color: var(--dybiz-muted); text-decoration: none; font-size: 14px; font-weight: 500;
  transition: color 0.2s ease;
}
.dybiz-nav a:hover { color: var(--dybiz-text); }
.dybiz-cta-btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 10px 22px; background: var(--dybiz-accent); color: #fff;
  font-size: 14px; font-weight: 600; text-decoration: none; border-radius: var(--dybiz-radius);
  transition: all 0.2s ease; white-space: nowrap;
}
.dybiz-cta-btn:hover { background: #ff4d6d; transform: translateY(-1px); }
.dybiz-cta-btn.secondary {
  background: transparent; border: 1px solid var(--dybiz-border); color: var(--dybiz-text);
}
.dybiz-cta-btn.secondary:hover { background: var(--dybiz-surface2); border-color: var(--dybiz-accent); }
.dybiz-hero {
  min-height: 620px; display: flex; align-items: center;
  padding: 80px 0 60px; border-bottom: 1px solid var(--dybiz-border);
}
.dybiz-hero-grid {
  display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 48px; align-items: center;
}
.dybiz-hero-title {
  font-size: 2.85rem; line-height: 1.15; font-weight: 700; letter-spacing: -1.2px;
  margin-bottom: 22px;
}
.dybiz-hero-lead {
  font-size: 15.5px; color: var(--dybiz-muted); max-width: 520px; margin-bottom: 32px;
}
.dybiz-hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.dybiz-live-panel {
  background: var(--dybiz-surface); border: 1px solid var(--dybiz-border);
  border-radius: var(--dybiz-radius); padding: 28px; height: fit-content;
}
.dybiz-live-panel h3 {
  font-size: 13px; font-weight: 600; color: var(--dybiz-accent2); margin-bottom: 18px;
  text-transform: uppercase; letter-spacing: 1px;
}
.dybiz-metric {
  display: flex; justify-content: space-between; align-items: baseline;
  padding: 14px 0; border-bottom: 1px solid var(--dybiz-border);
}
.dybiz-metric:last-child { border-bottom: none; }
.dybiz-metric-label { font-size: 13.5px; color: var(--dybiz-muted); }
.dybiz-metric-value {
  font-size: 22px; font-weight: 700; color: var(--dybiz-text); font-feature-settings: "tnum";
}
.dybiz-trust {
  background: var(--dybiz-surface); border-top: 1px solid var(--dybiz-border); border-bottom: 1px solid var(--dybiz-border);
  padding: 22px 0;
}
.dybiz-trust-inner {
  display: flex; align-items: center; justify-content: center; gap: 60px; flex-wrap: wrap;
  font-size: 13px; color: var(--dybiz-muted);
}
.dybiz-section { padding: 72px 0; }
.dybiz-section-header { margin-bottom: 32px; }
.dybiz-section-header h2 {
  font-size: 1.65rem; font-weight: 700; line-height: 1.3; margin-bottom: 10px;
}
.dybiz-section-header p { color: var(--dybiz-muted); max-width: 620px; }
.dybiz-grid-3 {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px;
}
.dybiz-card {
  background: var(--dybiz-surface); border: 1px solid var(--dybiz-border);
  border-radius: var(--dybiz-radius); padding: 26px; transition: transform 0.2s ease, border-color 0.2s ease;
}
.dybiz-card:hover { transform: translateY(-3px); border-color: #3a3a42; }
.dybiz-card h3 { font-size: 15.5px; font-weight: 600; margin-bottom: 12px; }
.dybiz-card p { color: var(--dybiz-muted); font-size: 14px; }
.dybiz-flow {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px;
}
.dybiz-step {
  position: relative; background: var(--dybiz-surface); border: 1px solid var(--dybiz-border);
  border-radius: var(--dybiz-radius); padding: 24px 22px;
}
.dybiz-step-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; background: var(--dybiz-accent); color: #fff;
  font-size: 13px; font-weight: 700; border-radius: 50%; margin-bottom: 14px;
}
.dybiz-step h4 { font-size: 15px; font-weight: 600; margin-bottom: 8px; }
.dybiz-step p { color: var(--dybiz-muted); font-size: 14px; }
.dybiz-metrics-row {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 16px; margin-top: 12px;
}
.dybiz-metric-box {
  background: var(--dybiz-surface2); border: 1px solid var(--dybiz-border);
  border-radius: var(--dybiz-radius); padding: 18px; text-align: center;
}
.dybiz-metric-box .num { font-size: 26px; font-weight: 700; color: var(--dybiz-accent); display: block; }
.dybiz-metric-box .label { font-size: 12.5px; color: var(--dybiz-muted); margin-top: 4px; }
.dybiz-faq { margin-top: 12px; }
.dybiz-faq details {
  background: var(--dybiz-surface); border: 1px solid var(--dybiz-border);
  border-radius: var(--dybiz-radius); margin-bottom: 10px; overflow: hidden;
}
.dybiz-faq summary {
  padding: 18px 22px; font-weight: 600; font-size: 15px; cursor: pointer;
  list-style: none; display: flex; justify-content: space-between; align-items: center;
}
.dybiz-faq summary::-webkit-details-marker { display: none; }
.dybiz-faq summary:after {
  content: "+"; font-size: 18px; color: var(--dybiz-accent); transition: transform 0.2s ease;
}
.dybiz-faq details[open] summary:after { content: "−"; }
.dybiz-faq details[open] { border-color: #3a3a42; }
.dybiz-faq p { padding: 0 22px 20px; color: var(--dybiz-muted); font-size: 14.2px; }
.dybiz-footer {
  background: var(--dybiz-surface); border-top: 1px solid var(--dybiz-border);
  padding: 48px 0 32px; font-size: 13px; color: var(--dybiz-muted);
}
.dybiz-footer-grid {
  display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 40px;
}
.dybiz-footer h4 { color: var(--dybiz-text); font-size: 14px; margin-bottom: 14px; font-weight: 600; }
.dybiz-footer a { color: var(--dybiz-muted); text-decoration: none; display: block; margin-bottom: 8px; }
.dybiz-footer a:hover { color: var(--dybiz-text); }
.dybiz-copyright { text-align: center; margin-top: 42px; padding-top: 22px; border-top: 1px solid var(--dybiz-border); }
@media (max-width: 820px) {
  .dybiz-hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .dybiz-hero-title { font-size: 2.35rem; }
  .dybiz-nav { gap: 18px; }
  .dybiz-header-inner { padding-left: 16px; padding-right: 16px; }
  .dybiz-wrapper { padding: 0 16px; }
  .dybiz-section { padding: 56px 0; }
  .dybiz-footer-grid { grid-template-columns: 1fr; gap: 28px; }
}