:root {
  --color-primary: #171717;
  --color-on-primary: #ffffff;
  --color-ink: #171717;
  --color-body: #4d4d4d;
  --color-mute: #888888;
  --color-hairline: #ebebeb;
  --color-hairline-strong: #a1a1a1;
  --color-canvas: #ffffff;
  --color-canvas-soft: #fafafa;
  --color-canvas-soft-2: #f5f5f5;
  --color-link: #0070f3;
  --color-link-deep: #0761d1;
  --color-link-bg-soft: #d3e5ff;
  --color-success: #0070f3;
  --color-error: #ee0000;
  --color-error-soft: #f7d4d6;
  --color-error-deep: #c50000;

  --font-sans: "Geist", Inter, -apple-system, "PingFang SC", "Hiragino Sans GB", system-ui, sans-serif;
  --font-mono: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, monospace;

  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-pill: 100px;
  --radius-full: 9999px;

  --shadow-1: inset 0 0 0 1px #00000014;
  --shadow-3: 0 2px 2px #0000000a, 0 8px 8px -8px #0000000a, inset 0 0 0 1px #00000014;
  --shadow-4: 0 2px 2px #0000000a, 0 8px 16px -4px #0000000a, inset 0 0 0 1px #00000014;

  --page-width: 1200px;
  --header-height: 64px;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--color-canvas-soft);
  color: var(--color-ink);
}

::selection {
  background: var(--color-primary);
  color: #f2f2f2;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 24px;
  color: var(--color-ink);
  background: var(--color-canvas-soft);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-link);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
a:active {
  color: var(--color-link-deep);
}

code,
.mono {
  font-family: var(--font-mono);
  font-weight: 400;
}

.container {
  max-width: var(--page-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  height: var(--header-height);
  background: var(--color-canvas);
  border-bottom: 1px solid var(--color-hairline);
}
.nav .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.28px;
}
.brand-mark {
  width: 24px;
  height: 24px;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: var(--color-on-primary);
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 14px;
  letter-spacing: -0.28px;
}
.nav-links a {
  color: var(--color-body);
}
.nav-links a:hover {
  color: var(--color-ink);
  text-decoration: none;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font: inherit;
  font-weight: 500;
  cursor: pointer;
  border: 0;
  transition: background-color 0.15s, box-shadow 0.15s;
}
.btn:focus-visible {
  outline: 2px solid var(--color-link);
  outline-offset: 2px;
}
.btn:disabled {
  opacity: 0.5;
  cursor: default;
}
.btn-pill {
  height: 48px;
  padding: 0 24px;
  border-radius: var(--radius-pill);
  font-size: 16px;
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
}
.btn-primary:hover:not(:disabled) {
  background: #383838;
}
.btn-secondary {
  background: var(--color-canvas);
  color: var(--color-ink);
  box-shadow: var(--shadow-1);
}
.btn-secondary:hover {
  background: var(--color-canvas-soft-2);
  text-decoration: none;
  box-shadow: inset 0 0 0 1px var(--color-hairline-strong);
}

/* Hero */
.hero {
  padding: 96px 0 64px;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 28px;
  padding: 0 12px;
  border-radius: var(--radius-full);
  background: var(--color-canvas);
  box-shadow: var(--shadow-1);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 16px;
  color: var(--color-body);
}
.hero h1 {
  margin: 24px 0 0;
  font-size: 48px;
  font-weight: 600;
  line-height: 56px;
  letter-spacing: -2.4px;
}
.lead {
  margin: 16px 0 0;
  max-width: 640px;
  font-size: 18px;
  line-height: 28px;
  color: var(--color-body);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

/* Status dots */
.dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--color-hairline-strong);
  flex: none;
}
.dot.ok {
  background: var(--color-success);
}
.dot.fail {
  background: var(--color-error);
}

/* Sections */
.section {
  padding: 64px 0;
  border-top: 1px solid var(--color-hairline);
}
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 16px;
  color: var(--color-mute);
}
.section h2 {
  margin: 8px 0 0;
  font-size: 32px;
  font-weight: 600;
  line-height: 40px;
  letter-spacing: -1.28px;
}
.section .section-lead {
  margin: 8px 0 0;
  font-size: 16px;
  color: var(--color-body);
}

.grid {
  display: grid;
  gap: 16px;
  margin-top: 32px;
}
.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

/* Cards */
.card {
  background: var(--color-canvas);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-3);
  padding: 24px;
  min-width: 0;
}
.stat-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  line-height: 20px;
  letter-spacing: -0.28px;
  color: var(--color-body);
}
.stat-value {
  margin-top: 8px;
  font-size: 24px;
  font-weight: 600;
  line-height: 32px;
  letter-spacing: -0.96px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.stat-value.mono {
  font-size: 16px;
  letter-spacing: 0;
}
.stat-hint {
  margin-top: 8px;
  font-size: 12px;
  line-height: 16px;
  color: var(--color-mute);
}

.endpoint-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.endpoint-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 20px;
  font-weight: 600;
  line-height: 28px;
  letter-spacing: -0.6px;
}
.endpoint-desc {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 20px;
  letter-spacing: -0.28px;
  color: var(--color-body);
}
.meta {
  display: flex;
  gap: 8px;
  flex: none;
}
.tag {
  height: 24px;
  padding: 0 8px;
  display: inline-flex;
  align-items: center;
  border-radius: var(--radius-sm);
  background: var(--color-canvas-soft-2);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-body);
}
.tag.ok {
  background: var(--color-link-bg-soft);
  color: var(--color-link-deep);
}
.tag.fail {
  background: var(--color-error-soft);
  color: var(--color-error-deep);
}

pre.code {
  margin: 24px 0 0;
  padding: 24px;
  min-height: 200px;
  max-height: 360px;
  overflow: auto;
  border-radius: var(--radius-md);
  background: var(--color-primary);
  color: #ededed;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 20px;
}

/* Ink band */
.band-ink {
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: 96px 0;
}
.band-ink .eyebrow {
  color: var(--color-hairline-strong);
}
.band-ink h2 {
  margin: 8px 0 0;
  font-size: 32px;
  font-weight: 600;
  line-height: 40px;
  letter-spacing: -1.28px;
}
.band-ink .section-lead {
  margin: 8px 0 0;
  color: var(--color-hairline-strong);
}
.region {
  border-radius: var(--radius-md);
  box-shadow: inset 0 0 0 1px #ffffff24;
  padding: 24px;
}
.region-name {
  font-size: 20px;
  font-weight: 600;
  line-height: 28px;
  letter-spacing: -0.6px;
}
.region-code {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 16px;
  color: var(--color-hairline-strong);
}
.region-state {
  margin-top: 24px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  line-height: 20px;
  color: #d4d4d4;
}
.region-state .dot {
  background: #5c5c5c;
}
.region-state .dot.ok {
  background: var(--color-on-primary);
}

/* Footer */
.footer {
  background: var(--color-canvas);
  border-top: 1px solid var(--color-hairline);
  padding: 32px 0;
  font-size: 12px;
  line-height: 16px;
  color: var(--color-mute);
}
.footer .container {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

@media (max-width: 959px) {
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .grid-2 {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 599px) {
  .container {
    padding: 0 16px;
  }
  .nav-links {
    display: none;
  }
  .hero {
    padding: 64px 0 48px;
  }
  .hero h1 {
    font-size: 32px;
    line-height: 40px;
    letter-spacing: -1.28px;
  }
  .section h2,
  .band-ink h2 {
    font-size: 24px;
    line-height: 32px;
    letter-spacing: -0.96px;
  }
  .grid-3,
  .grid-4 {
    grid-template-columns: minmax(0, 1fr);
  }
  .band-ink {
    padding: 64px 0;
  }
}