:root {
  --bg: #07111f;
  --bg-accent: #0d1d37;
  --panel: #0d182d;
  --panel-soft: #101f39;
  --border: rgba(255, 255, 255, 0.08);
  --text: #f5f8fc;
  --muted: #9eb0cb;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #f87171;
  --radius: 18px;
  --shadow: 0 18px 46px rgba(0, 0, 0, 0.26);
  --max-width: 1120px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  background:
    radial-gradient(circle at top, rgba(59, 130, 246, 0.14), transparent 28%),
    linear-gradient(180deg, var(--bg-accent) 0%, #050b15 100%);
  color: var(--text);
  font-family: Inter, "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea,
summary {
  font: inherit;
}

.site {
  width: min(100%, var(--max-width));
  margin: 0 auto;
  padding: 28px 20px 84px;
}

.site-header,
.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

.site-header {
  margin-bottom: 56px;
  align-items: flex-start;
}

.brand {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.03em;
  padding-top: 8px;
}

.site-nav,
.footer-links,
.transaction-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.site-nav {
  align-items: center;
  padding: 6px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: rgba(7, 17, 31, 0.72);
  backdrop-filter: blur(10px);
}

.nav-link,
.nav-trigger,
.footer-links a,
.transaction-links a {
  color: var(--muted);
  font-size: 14px;
}

.nav-link,
.nav-trigger,
.transaction-links a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 12px;
  border-radius: 12px;
}

.nav-link:hover,
.nav-link[aria-current="page"],
.footer-links a:hover,
.nav-trigger:hover,
.nav-group[open] > .nav-trigger,
.nav-group.active > .nav-trigger,
.transaction-links a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.nav-group {
  position: relative;
}

.nav-trigger {
  list-style: none;
  cursor: pointer;
  user-select: none;
}

.nav-trigger::after {
  content: "+";
  margin-left: 8px;
  font-size: 12px;
  color: var(--muted);
}

.nav-group[open] > .nav-trigger::after,
.nav-group.active > .nav-trigger::after {
  color: var(--text);
}

.nav-trigger::-webkit-details-marker {
  display: none;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 190px;
  display: grid;
  gap: 4px;
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(9, 17, 31, 0.98);
  box-shadow: var(--shadow);
  z-index: 20;
}

.dropdown-menu a {
  display: block;
  padding: 10px 12px;
  border-radius: 10px;
  color: var(--muted);
  font-size: 14px;
}

.dropdown-menu a:hover,
.dropdown-menu a[aria-current="page"] {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.hero {
  max-width: 780px;
  padding: 6px 0 8px;
}

.transaction-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 42px;
  padding-bottom: 12px;
}

.transaction-main {
  max-width: 940px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  padding: 8px 13px;
  margin-bottom: 18px;
  border: 1px solid rgba(59, 130, 246, 0.28);
  border-radius: 999px;
  background: rgba(59, 130, 246, 0.08);
  color: #9cc7ff;
  font-size: 13px;
}

h1,
.page-title {
  margin: 0 0 14px;
  font-size: clamp(38px, 6.4vw, 58px);
  line-height: 1;
  letter-spacing: -0.055em;
}

h2 {
  margin: 0 0 10px;
  font-size: 24px;
  line-height: 1.15;
  letter-spacing: -0.03em;
}

h3 {
  margin: 0 0 10px;
  font-size: 19px;
  letter-spacing: -0.02em;
}

p {
  margin: 0;
}

.lead,
.section-intro {
  max-width: 720px;
  margin: 0;
  color: var(--muted);
  font-size: 17px;
}

.section {
  margin-top: 48px;
}

.actions,
.inline-actions,
.link-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.actions {
  margin-top: 24px;
}

.button,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 12px 18px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.02);
  color: var(--text);
  font-weight: 700;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}

.button:hover,
.btn:hover {
  transform: translateY(-1px);
}

.button-primary,
.btn-primary {
  background: var(--primary);
  border-color: transparent;
  color: #fff;
}

.button-primary:hover,
.btn-primary:hover {
  background: var(--primary-hover);
}

.button-secondary,
.btn-secondary {
  background: rgba(255, 255, 255, 0.03);
}

.panel,
.card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.026), rgba(255, 255, 255, 0.012));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.panel {
  padding: 26px;
}

.grid {
  display: grid;
  gap: 20px;
}

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

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

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.split {
  display: grid;
  gap: 22px;
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.9fr);
}

.metric-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.metric {
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.02);
}

.metric-label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.metric-value {
  font-size: 18px;
  font-weight: 800;
  word-break: break-word;
}

.list,
.doc ul,
.plan ul,
.stack-list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.list li,
.doc li,
.plan li,
.stack-list li {
  margin: 8px 0;
}

.step-list {
  display: grid;
  gap: 16px;
  margin-top: 18px;
}

.step,
.example-card {
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.02);
}

.example-card + .example-card {
  margin-top: 18px;
}

.base-url {
  margin-top: 16px;
  max-width: 420px;
}

.field {
  margin-top: 16px;
}

.field label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 700;
}

.input,
.textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #09111f;
  color: var(--text);
  outline: none;
}

.textarea {
  min-height: 120px;
  resize: vertical;
}

.mono,
code,
pre {
  font-family: var(--mono);
}

.notice {
  margin-top: 16px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--muted);
}

.notice.ok {
  border-color: rgba(34, 197, 94, 0.25);
  background: rgba(34, 197, 94, 0.08);
  color: #9ae6b4;
}

.notice.warn {
  border-color: rgba(245, 158, 11, 0.25);
  background: rgba(245, 158, 11, 0.08);
  color: #f9d487;
}

.notice.err {
  border-color: rgba(248, 113, 113, 0.25);
  background: rgba(248, 113, 113, 0.08);
  color: #fecaca;
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 11px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
}

.badge.active {
  color: #9ae6b4;
  background: rgba(34, 197, 94, 0.08);
  border-color: rgba(34, 197, 94, 0.22);
}

.badge.canceled,
.badge.past_due,
.badge.paused {
  color: #fecaca;
  background: rgba(248, 113, 113, 0.08);
  border-color: rgba(248, 113, 113, 0.22);
}

.badge.unknown {
  color: #f9d487;
  background: rgba(245, 158, 11, 0.08);
  border-color: rgba(245, 158, 11, 0.22);
}

.code-block {
  margin-top: 10px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #09111f;
  color: #dfe8f6;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

.endpoint {
  display: grid;
  gap: 14px;
}

.endpoint + .endpoint {
  margin-top: 14px;
}

.endpoint-meta {
  color: var(--muted);
  font-size: 14px;
}

.secondary-details {
  margin-top: 18px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.02);
}

.secondary-details summary {
  cursor: pointer;
  list-style: none;
  padding: 14px 16px;
  color: var(--muted);
}

.secondary-details summary::-webkit-details-marker {
  display: none;
}

.secondary-details .details-body {
  padding: 0 16px 16px;
}

.table-wrap {
  overflow-x: auto;
  margin-top: 18px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #09111f;
}

table {
  width: 100%;
  min-width: 700px;
  border-collapse: collapse;
}

th,
td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

tr:last-child td {
  border-bottom: none;
}

.legal {
  max-width: 840px;
}

.legal section + section {
  margin-top: 22px;
}

.legal p,
.legal li {
  color: var(--muted);
}

.site-footer {
  margin-top: 60px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 14px;
}

.muted {
  color: var(--muted);
}

.center-panel {
  max-width: 760px;
}

.hidden {
  display: none !important;
}

@media (max-width: 1024px) {
  .grid-4,
  .grid-3,
  .grid-2,
  .split {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  .site-header {
    align-items: stretch;
  }

  .site-nav {
    width: 100%;
    justify-content: flex-start;
  }

  .nav-group {
    width: 100%;
  }

  .dropdown-menu {
    position: static;
    min-width: 0;
    margin-top: 6px;
    box-shadow: none;
  }

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

@media (max-width: 720px) {
  .site {
    padding: 22px 16px 64px;
  }

  .metric-grid {
    grid-template-columns: 1fr;
  }

  .lead,
  .section-intro {
    font-size: 16px;
  }

  .site-nav {
    gap: 8px;
  }
}