/* ============== 设计令牌 ============== */
:root {
  --bg: #06070d;
  --bg-soft: #0b0d18;
  --text: #e7eaf7;
  --muted: #9298b8;
  --line: rgba(255,255,255,0.08);
  --p1: #7c3aed;
  --p2: #22d3ee;
  --grad: linear-gradient(135deg, #7c3aed 0%, #a855f7 50%, #22d3ee 100%);
  --grad-soft: linear-gradient(135deg, rgba(124,58,237,0.18) 0%, rgba(34,211,238,0.18) 100%);
  --glass-bg: rgba(255,255,255,0.03);
  --glass-border: rgba(255,255,255,0.08);
  --success: #22c55e;
  --warn: #f59e0b;
  --error: #ef4444;
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;
  --maxw: 1200px;
  --font: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { background: var(--bg); color: var(--text); font-family: var(--font); -webkit-font-smoothing: antialiased; }
body { min-height: 100vh; line-height: 1.55; overflow-x: hidden; }
a { color: var(--text); text-decoration: none; transition: color 0.15s; }
a:hover { color: var(--p2); }
code, pre { font-family: var(--font-mono); }

/* ============== 背景粒子画布 ============== */
#bg-canvas {
  position: fixed;
  inset: 0;
  z-index: -1;
  opacity: 0.45;
  pointer-events: none;
}

/* 渐变光晕 */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(ellipse 800px 600px at 20% 0%, rgba(124,58,237,0.25), transparent 60%),
    radial-gradient(ellipse 600px 500px at 80% 30%, rgba(34,211,238,0.18), transparent 60%),
    radial-gradient(ellipse 1000px 600px at 50% 100%, rgba(168,85,247,0.12), transparent 60%);
}

/* ============== 工具类 ============== */
.glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(14px);
  border-radius: var(--r-md);
}
.muted { color: var(--muted); }
.grad {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ============== Topbar ============== */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 32px;
  background: rgba(6,7,13,0.75);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 600;
  letter-spacing: 0.5px;
}
.brand-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-size: 18px;
}
.nav { display: flex; gap: 28px; align-items: center; font-size: 14px; }
.nav a { color: var(--muted); }
.nav a:hover { color: var(--text); }

/* ============== Hero ============== */
.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 96px 32px 56px;
  text-align: center;
}
.hero-tag {
  display: inline-block;
  padding: 6px 16px;
  background: var(--grad-soft);
  border: 1px solid rgba(124,58,237,0.35);
  border-radius: 100px;
  font-size: 12px;
  color: var(--p2);
  margin-bottom: 28px;
  letter-spacing: 0.5px;
}
.hero-title {
  font-size: clamp(36px, 6vw, 72px);
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: -1px;
  margin-bottom: 24px;
}
.hero-sub {
  font-size: 18px;
  color: var(--muted);
  max-width: 780px;
  margin: 0 auto 40px;
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 64px;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 24px;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 600;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: var(--grad);
  color: white;
  border-color: transparent;
  box-shadow: 0 8px 32px rgba(124,58,237,0.4);
}
.btn-primary:hover { box-shadow: 0 12px 40px rgba(124,58,237,0.6); }
.btn-secondary { background: rgba(255,255,255,0.05); border-color: var(--line); }
.btn-secondary:hover { background: rgba(255,255,255,0.1); }
.btn-ghost { color: var(--muted); border-color: transparent; }
.btn-ghost:hover { color: var(--text); }

/* ============== Hero Stats ============== */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  max-width: 1000px;
  margin: 0 auto;
}
@media (max-width: 768px) {
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
}
.stat-card {
  padding: 22px 20px;
  text-align: left;
}
.stat-card.highlight { border-color: rgba(124,58,237,0.4); background: var(--grad-soft); }
.stat-label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px; }
.stat-value {
  font-size: 32px;
  font-weight: 700;
  font-family: var(--font-mono);
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat-meta { font-size: 11px; color: var(--muted); margin-top: 4px; }

/* ============== Section ============== */
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 88px 32px;
}
.section-title { font-size: clamp(28px, 4vw, 44px); font-weight: 700; text-align: center; margin-bottom: 16px; letter-spacing: -0.5px; }
.section-sub { color: var(--muted); text-align: center; max-width: 720px; margin: 0 auto 56px; font-size: 16px; }
.subhead { font-size: 14px; color: var(--muted); text-transform: uppercase; letter-spacing: 1.5px; margin: 40px 0 16px; }

/* ============== Compare Table ============== */
.compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 48px;
}
@media (max-width: 768px) {
  .compare { grid-template-columns: 1fr; }
}
.compare-col {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-md);
  padding: 24px;
  position: relative;
}
.compare-col.compare-btcq {
  background: var(--grad-soft);
  border-color: rgba(124,58,237,0.4);
}
.compare-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(255,255,255,0.06);
  border-radius: 100px;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 16px;
  font-family: var(--font-mono);
}
.compare-tag-btcq { background: var(--grad); color: white; }
.compare-list { list-style: none; }
.compare-list li {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-top: 1px solid var(--line);
  font-size: 14px;
  gap: 12px;
}
.compare-list li:first-child { border-top: 0; }
.compare-list span { color: var(--muted); }

/* ============== Feature Grid ============== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}
.feature {
  padding: 28px 24px;
  transition: transform 0.2s, border-color 0.2s;
}
.feature:hover { transform: translateY(-4px); border-color: rgba(124,58,237,0.35); }
.feature-icon {
  font-size: 32px;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 12px;
}
.feature h3 { font-size: 18px; margin-bottom: 8px; }
.feature p { color: var(--muted); font-size: 14px; line-height: 1.65; }

/* ============== RPC Section ============== */
.section-rpc { padding-top: 64px; }
.rpc-card {
  padding: 24px 28px;
  position: relative;
  border-color: rgba(34,211,238,0.3);
}
.rpc-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}
.rpc-tag {
  font-size: 12px;
  color: var(--p2);
  font-family: var(--font-mono);
  letter-spacing: 0.5px;
}
.rpc-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--muted);
  font-family: var(--font-mono);
}
.rpc-status .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--muted);
  box-shadow: 0 0 12px var(--muted);
}
.rpc-status.online .dot { background: var(--success); box-shadow: 0 0 12px var(--success); }
.rpc-status.offline .dot { background: var(--error); }
.rpc-url {
  display: block;
  padding: 14px 18px;
  background: rgba(0,0,0,0.4);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  font-size: 16px;
  color: var(--p2);
  letter-spacing: 0.5px;
  word-break: break-all;
  user-select: text;
  font-family: var(--font-mono);
}
.btn-copy {
  position: absolute;
  right: 32px;
  bottom: 26px;
  padding: 6px 14px;
  background: rgba(34,211,238,0.15);
  border: 1px solid rgba(34,211,238,0.4);
  border-radius: 100px;
  font-size: 12px;
  color: var(--p2);
  cursor: pointer;
  font-weight: 600;
  font-family: var(--font);
}
.btn-copy:hover { background: rgba(34,211,238,0.25); }
.btn-copy.copied { background: rgba(34,197,94,0.25); border-color: rgba(34,197,94,0.5); color: var(--success); }

/* ============== Endpoint Grid ============== */
.endpoint-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 14px;
}
.endpoint {
  padding: 18px 20px;
  transition: border-color 0.2s, transform 0.2s;
}
.endpoint:hover { border-color: rgba(34,211,238,0.35); transform: translateY(-2px); }
.endpoint.highlight { border-color: rgba(124,58,237,0.4); }
.endpoint-method {
  display: inline-block;
  padding: 4px 10px;
  background: rgba(34,211,238,0.12);
  border: 1px solid rgba(34,211,238,0.3);
  border-radius: var(--r-sm);
  color: var(--p2);
  font-size: 12px;
  margin-bottom: 10px;
}
.endpoint p { color: var(--muted); font-size: 13px; line-height: 1.6; }
.endpoint p code {
  display: inline;
  padding: 1px 6px;
  background: rgba(34,211,238,0.1);
  border-radius: 4px;
  font-size: 11px;
  color: var(--p2);
}

/* ============== Code Block ============== */
.code-block {
  background: rgba(0,0,0,0.55);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 20px 24px;
  overflow-x: auto;
  margin-top: 16px;
}
.code-block pre, .code-block code {
  font-size: 13px;
  color: #e2e8f0;
  white-space: pre;
}

/* ============== Steps ============== */
.step-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
@media (max-width: 768px) {
  .step-list { grid-template-columns: 1fr; }
}
.step { padding: 28px 24px; position: relative; }
.step-num {
  position: absolute;
  top: -16px;
  left: 24px;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--grad);
  color: white;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  box-shadow: 0 4px 16px rgba(124,58,237,0.4);
}
.step h3 { margin: 14px 0 8px; font-size: 18px; }
.step pre {
  margin-top: 10px;
  background: rgba(0,0,0,0.4);
  padding: 10px 12px;
  border-radius: var(--r-sm);
  overflow-x: auto;
  font-size: 11px;
  color: var(--p2);
}

/* ============== Block list ============== */
.block-list {
  display: grid;
  gap: 8px;
  max-width: 900px;
  margin: 0 auto;
}
.block-row {
  display: grid;
  grid-template-columns: 80px 100px 1fr 120px 80px;
  align-items: center;
  padding: 14px 20px;
  border-radius: var(--r-sm);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  font-family: var(--font-mono);
  font-size: 13px;
  transition: border-color 0.15s;
  gap: 14px;
}
.block-row:hover { border-color: rgba(124,58,237,0.35); }
.block-row .height { color: var(--p2); font-weight: 600; }
.block-row .slot { color: var(--muted); }
.block-row .hash { color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.block-row .ts { color: var(--muted); font-size: 11px; }
.block-row .xeb { color: var(--success); text-align: right; }
@media (max-width: 768px) {
  .block-row { grid-template-columns: 70px 1fr 80px; }
  .block-row .slot, .block-row .ts { display: none; }
}

/* ============== Tribute ============== */
.section-tribute { padding-bottom: 64px; }
.tribute-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  max-width: 1000px;
  margin: 0 auto;
}
.tribute {
  padding: 18px 20px;
  text-align: left;
  transition: border-color 0.15s;
}
.tribute:hover { border-color: rgba(124,58,237,0.35); }
.tribute b { display: block; font-size: 15px; margin-bottom: 4px; }
.tribute span {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 100px;
  background: rgba(34,211,238,0.12);
  color: var(--p2);
  font-size: 12px;
  margin: 4px 0;
  font-family: var(--font-mono);
}
.tribute i { display: block; font-style: normal; font-size: 11px; color: var(--muted); margin-top: 4px; }
.tribute.quantum span { background: rgba(124,58,237,0.18); color: #c084fc; }
.tribute.eco span { background: rgba(34,197,94,0.15); color: var(--success); }
.genesis-msg {
  text-align: center;
  margin-top: 40px;
  font-size: 14px;
  color: var(--muted);
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  font-style: italic;
}
.genesis-msg i { color: var(--text); font-style: normal; }

/* ============== Footer ============== */
.footer {
  border-top: 1px solid var(--line);
  background: rgba(0,0,0,0.3);
  padding: 56px 32px 40px;
}
.footer-grid {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
}
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr; }
}
.footer-brand {
  font-size: 18px;
  font-weight: 600;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 6px;
}
.footer h4 { font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 12px; }
.footer a { display: block; color: var(--muted); margin-bottom: 6px; font-size: 14px; }
.footer a:hover { color: var(--text); }