:root {
  color-scheme: light;

  /* Brand palette (Hummingbird) */
  --brand-front-wing: #e4a087;
  --brand-eye: #374151;
  --brand-body: #f88059;
  --brand-beak: #d9a895;
  --brand-back-wing: #9f4e36;
  --brand-oval: #ffd8cb;

  /* UI tokens */
  --bg: #ffffff;
  --fg: #111827;
  --muted: #374151;
  --muted-2: #6b7280;
  --card: rgba(255, 255, 255, 0.75);
  --card-solid: #ffffff;
  --border: rgba(15, 23, 42, 0.12);
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.06), 0 16px 60px rgba(15, 23, 42, 0.08);

  --accent: var(--brand-body);
  --accent-hover: #f46f49;

  --radius: 16px;
  --radius-sm: 12px;
  --container: 1040px;

  --focus: 2px solid rgba(248, 128, 89, 0.45);
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;

    /* Brand palette (Hummingbird) */
    --brand-front-wing: #ffc1ad;
    --brand-eye: #d1d5db;
    --brand-body: #ff8e6a;
    --brand-beak: #f3d2c6;
    --brand-back-wing: #c46245;
    --brand-oval: rgba(255, 216, 203, 0.25);

    /* UI tokens */
    --bg: #0b0f14;
    --fg: #f9fafb;
    --muted: #cbd5e1;
    --muted-2: #94a3b8;
    --card: rgba(17, 24, 39, 0.6);
    --card-solid: #111827;
    --border: rgba(148, 163, 184, 0.18);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.35), 0 28px 90px rgba(0, 0, 0, 0.38);

    --accent: var(--brand-body);
    --accent-hover: #ff7d55;

    --focus: 2px solid rgba(255, 142, 106, 0.45);
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  line-height: 1.5;
  color: var(--fg);
  background: radial-gradient(980px 540px at 18% -12%, var(--brand-oval) 0%, transparent 62%),
    radial-gradient(820px 520px at 90% 10%, rgba(248, 128, 89, 0.18) 0%, transparent 55%),
    var(--bg);
}

@media (prefers-color-scheme: dark) {
  body {
    background: radial-gradient(980px 540px at 18% -12%, var(--brand-oval) 0%, transparent 62%),
      radial-gradient(820px 520px at 90% 10%, rgba(255, 142, 106, 0.16) 0%, transparent 55%),
      var(--bg);
  }
}

a {
  color: var(--accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--accent-hover);
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(12px);
}

@media (prefers-color-scheme: dark) {
  .site-header {
    background: rgba(11, 15, 20, 0.65);
  }
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--fg);
}

.brand-icon {
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
}

@media (prefers-color-scheme: dark) {
  .brand-icon {
    content: url('/assets/favicon-dark.svg');
  }
}

.nav {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 700;
  font-size: 14px;
}

.nav a:hover {
  color: var(--fg);
}

main {
  padding: 44px 0 70px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.55);
  border-radius: 999px;
  padding: 7px 10px;
  font-weight: 800;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

@media (prefers-color-scheme: dark) {
  .pill {
    background: rgba(17, 24, 39, 0.55);
  }
}

h1 {
  margin: 14px 0 12px;
  line-height: 1.1;
  font-size: clamp(34px, 4vw, 48px);
  letter-spacing: -0.03em;
}

h2 {
  margin: 28px 0 10px;
  font-size: 22px;
  letter-spacing: -0.02em;
}

h3 {
  margin: 20px 0 10px;
  font-size: 16px;
  letter-spacing: -0.01em;
}

p {
  margin: 10px 0;
  color: var(--muted);
  font-size: 16px;
}

.lead {
  font-size: 18px;
  line-height: 1.65;
}

.hero {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 26px;
  align-items: start;
}

@media (max-width: 920px) {
  .hero {
    grid-template-columns: 1fr;
  }
}

.card {
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}

.card.solid {
  background: var(--card-solid);
}

.card h2:first-child,
.card h3:first-child {
  margin-top: 0;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 11px 16px;
  border-radius: 999px;
  font-weight: 800;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  user-select: none;
}

.button:focus-visible {
  outline: var(--focus);
  outline-offset: 3px;
}

.button.primary {
  background: var(--accent);
  color: #1f2937;
}

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

.button.secondary {
  border-color: var(--border);
  background: rgba(255, 255, 255, 0.65);
  color: var(--fg);
}

@media (prefers-color-scheme: dark) {
  .button.secondary {
    background: rgba(17, 24, 39, 0.65);
  }
}

.button.secondary:hover {
  border-color: rgba(148, 163, 184, 0.35);
}

.button.ghost {
  background: transparent;
  border-color: transparent;
  color: var(--muted);
  padding-left: 10px;
  padding-right: 10px;
}

.button.ghost:hover {
  color: var(--fg);
}

ul {
  margin: 10px 0 0 18px;
  color: var(--muted);
}

li {
  margin: 7px 0;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 920px) {
  .split {
    grid-template-columns: 1fr;
  }
}

.fineprint {
  margin-top: 12px;
  font-size: 13px;
  color: var(--muted-2);
}

.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New",
    monospace;
}

.token-box {
  margin-top: 10px;
  background: rgba(17, 24, 39, 0.92);
  color: #e5e7eb;
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: var(--radius-sm);
  padding: 12px 12px;
  overflow-x: auto;
}

.notice {
  margin-top: 12px;
  border-left: 4px solid var(--accent);
  padding: 10px 12px;
  background: rgba(255, 216, 203, 0.55);
  border-radius: var(--radius-sm);
  color: #1f2937;
}

@media (prefers-color-scheme: dark) {
  .notice {
    background: rgba(255, 216, 203, 0.15);
    color: var(--fg);
  }
}

.notice.danger {
  border-left-color: #dc2626;
  background: rgba(220, 38, 38, 0.08);
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 26px 0;
  color: var(--muted-2);
  font-size: 13px;
}

.site-footer a {
  color: inherit;
  font-weight: 800;
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
}