:root {
  color-scheme: light;
  --ink: #101828;
  --muted: #475467;
  --subtle: #667085;
  --line: #dfe5ec;
  --paper: #ffffff;
  --canvas: #f7f9fc;
  --blue: #2563eb;
  --blue-soft: #eaf1ff;
  --green: #008f6b;
  --coral: #e35d4f;
  --terminal: #121820;
  font-family: Inter, Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
  scroll-behavior: smooth;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-width: 320px; background: var(--paper); color: var(--ink); }
body { min-height: 100vh; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; letter-spacing: 0; }
button { cursor: pointer; }
code, pre { font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace; letter-spacing: 0; }

.dev-header {
  position: sticky;
  top: 0;
  z-index: 20;
  min-height: 64px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 28px;
  border-bottom: 1px solid rgba(16, 24, 40, 0.08);
  background: rgba(255, 255, 255, 0.94);
  padding: 0 max(28px, calc((100vw - 1240px) / 2));
  backdrop-filter: blur(16px);
}

.dev-brand { display: inline-flex; align-items: center; gap: 12px; font-size: 13px; font-weight: 800; }
.dev-brand img { width: 80px; height: auto; }
.dev-brand span { border-left: 1px solid var(--line); color: var(--subtle); padding-left: 12px; }
.dev-header > nav { justify-self: center; display: flex; align-items: center; gap: 6px; }
.dev-header > nav a { padding: 9px 11px; color: var(--muted); font-size: 13px; font-weight: 700; }
.dev-header > nav a:hover { color: var(--blue); }
.dev-header-cta, .dev-primary-action, .dev-secondary-action {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  padding: 0 16px;
  font-size: 13px;
  font-weight: 800;
}
.dev-header-cta, .dev-primary-action { background: var(--ink); color: #fff; }
.dev-secondary-action { border: 1px solid var(--line); background: #fff; color: var(--ink); }

.dev-hero {
  min-height: 560px;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(480px, 1.1fr);
  align-items: center;
  gap: 64px;
  border-bottom: 1px solid var(--line);
  background: var(--canvas);
  padding: 72px max(28px, calc((100vw - 1180px) / 2));
}
.dev-hero-copy { min-width: 0; }
.dev-eyebrow, .dev-section-index { color: var(--green); font-size: 12px; font-weight: 900; text-transform: uppercase; }
.dev-hero h1 { margin: 16px 0 0; max-width: 620px; font-size: 48px; line-height: 1.12; font-weight: 850; word-break: keep-all; }
.dev-hero-copy > p { margin: 22px 0 0; max-width: 570px; color: var(--muted); font-size: 17px; line-height: 1.75; font-weight: 550; word-break: keep-all; }
.dev-hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.dev-primary-action, .dev-secondary-action { min-height: 44px; padding: 0 18px; }
.dev-primary-action { background: var(--blue); }
.dev-hero-facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin: 42px 0 0; }
.dev-hero-facts div { border-top: 1px solid var(--line); padding-top: 13px; }
.dev-hero-facts dt { color: var(--subtle); font-size: 11px; font-weight: 700; }
.dev-hero-facts dd { margin: 5px 0 0; color: var(--ink); font-size: 13px; font-weight: 800; }

.dev-terminal { min-width: 0; overflow: hidden; border: 1px solid #2d3745; border-radius: 8px; background: var(--terminal); color: #d7e0eb; box-shadow: 0 24px 56px rgba(16, 24, 40, 0.18); }
.dev-terminal-bar { min-height: 48px; display: flex; align-items: center; gap: 12px; border-bottom: 1px solid #2b3441; padding: 0 18px; }
.dev-terminal-bar span { border-radius: 4px; background: rgba(34, 197, 149, 0.16); color: #4ee0ae; padding: 4px 7px; font-size: 11px; font-weight: 900; }
.dev-terminal-bar code { min-width: 0; overflow: hidden; color: #aab7c7; font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.dev-terminal-bar em { margin-left: auto; color: #4ee0ae; font-size: 11px; font-style: normal; font-weight: 800; white-space: nowrap; }
.dev-terminal pre { min-height: 348px; margin: 0; overflow: auto; padding: 24px; font-size: 12px; line-height: 1.8; }
.code-dim { color: #95a3b5; }
.code-string { color: #b9e77c; }
.code-key { color: #79b8ff; }
.code-brace { color: #d7e0eb; }

.dev-layout { width: min(1180px, calc(100% - 56px)); display: grid; grid-template-columns: 210px minmax(0, 1fr); gap: 72px; margin: 0 auto; }
.dev-sidebar { position: sticky; top: 88px; align-self: start; display: grid; gap: 3px; padding: 64px 0; }
.dev-sidebar strong { margin-bottom: 12px; color: var(--ink); font-size: 12px; }
.dev-sidebar a { border-left: 2px solid transparent; color: var(--subtle); padding: 8px 12px; font-size: 12px; font-weight: 650; }
.dev-sidebar a:hover { border-left-color: var(--blue); color: var(--blue); }
.dev-docs { min-width: 0; max-width: 820px; padding-bottom: 120px; }
.dev-section { scroll-margin-top: 92px; border-bottom: 1px solid var(--line); padding: 72px 0; }
.dev-section h2 { margin: 10px 0 0; font-size: 30px; line-height: 1.25; font-weight: 850; }
.dev-section > p { margin: 18px 0 0; max-width: 760px; color: var(--muted); font-size: 15px; line-height: 1.8; word-break: keep-all; }

.dev-capabilities { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin-top: 32px; }
.dev-capabilities div { border-top: 3px solid var(--blue); padding-top: 16px; }
.dev-capabilities div:nth-child(2) { border-top-color: var(--green); }
.dev-capabilities div:nth-child(3) { border-top-color: var(--coral); }
.dev-capabilities strong, .dev-capabilities span { display: block; }
.dev-capabilities strong { font-size: 14px; }
.dev-capabilities span { margin-top: 8px; color: var(--subtle); font-size: 12px; line-height: 1.65; }

.dev-steps { display: grid; gap: 0; margin: 30px 0; padding: 0; counter-reset: steps; list-style: none; }
.dev-steps li { position: relative; display: grid; gap: 5px; min-height: 72px; border-left: 1px solid var(--line); padding: 0 0 24px 42px; counter-increment: steps; }
.dev-steps li:last-child { min-height: 36px; border-color: transparent; padding-bottom: 0; }
.dev-steps li::before { content: counter(steps); position: absolute; top: -2px; left: -15px; width: 30px; height: 30px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 50%; background: #fff; color: var(--blue); font-size: 12px; font-weight: 900; }
.dev-steps b { font-size: 14px; }
.dev-steps span { color: var(--subtle); font-size: 13px; line-height: 1.55; }

.dev-code-block { margin-top: 28px; overflow: hidden; border: 1px solid #2d3745; border-radius: 8px; background: var(--terminal); color: #d7e0eb; }
.dev-code-block.compact { margin-top: 18px; }
.dev-code-block header { min-height: 43px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid #2d3745; padding: 0 14px 0 18px; }
.dev-code-block header span { color: #95a3b5; font-size: 11px; font-weight: 800; }
.dev-code-block button { border: 0; background: transparent; color: #79b8ff; padding: 7px; font-size: 11px; font-weight: 800; }
.dev-code-block pre { margin: 0; overflow: auto; padding: 20px; font-size: 12px; line-height: 1.75; }

.dev-callout { margin-top: 24px; border-left: 3px solid var(--green); background: #eefaf6; padding: 16px 18px; }
.dev-callout strong { color: #00684e; font-size: 13px; }
.dev-callout p { margin: 6px 0 0; color: #42635a; font-size: 13px; line-height: 1.65; }

.dev-endpoint { margin-top: 34px; border-top: 1px solid var(--line); padding-top: 25px; }
.dev-endpoint > header { display: flex; align-items: center; gap: 12px; }
.dev-endpoint > header code { min-width: 0; overflow-wrap: anywhere; color: var(--ink); font-size: 14px; font-weight: 750; }
.method { flex: 0 0 auto; border-radius: 4px; padding: 5px 7px; font-size: 10px; font-weight: 900; }
.method.get { background: #e7f8f1; color: #007a59; }
.dev-endpoint > p { margin: 13px 0 0; color: var(--muted); font-size: 13px; line-height: 1.7; }
.dev-parameter-table { display: grid; margin-top: 20px; border-top: 1px solid var(--line); }
.dev-parameter-table > div { display: grid; grid-template-columns: 140px 170px minmax(0, 1fr); align-items: center; min-height: 50px; border-bottom: 1px solid var(--line); }
.dev-parameter-table b, .dev-parameter-table code, .dev-parameter-table span { padding: 10px 12px; font-size: 12px; }
.dev-parameter-table code { color: var(--blue); }
.dev-parameter-table span { color: var(--subtle); }

.dev-event-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0; margin-top: 26px; border-top: 1px solid var(--line); }
.dev-event-grid div { display: grid; gap: 7px; border-bottom: 1px solid var(--line); padding: 17px 8px; }
.dev-event-grid div:nth-child(odd) { border-right: 1px solid var(--line); }
.dev-event-grid code { color: var(--blue); font-size: 12px; font-weight: 750; }
.dev-event-grid span { color: var(--subtle); font-size: 12px; }

.dev-header-list, .dev-error-table { display: grid; margin-top: 26px; border-top: 1px solid var(--line); }
.dev-header-list { grid-template-columns: minmax(190px, 0.45fr) 1fr; }
.dev-header-list code, .dev-header-list span { border-bottom: 1px solid var(--line); padding: 13px 10px; font-size: 12px; }
.dev-header-list code { color: var(--blue); }
.dev-header-list span { color: var(--subtle); }
.dev-error-table div { display: grid; grid-template-columns: 56px 190px 1fr; align-items: center; min-height: 48px; border-bottom: 1px solid var(--line); }
.dev-error-table b, .dev-error-table code, .dev-error-table span { padding: 10px; font-size: 12px; }
.dev-error-table b { color: var(--coral); }
.dev-error-table code { color: var(--ink); }
.dev-error-table span { color: var(--subtle); }

.developer-console { margin-top: 28px; border: 1px solid var(--line); border-radius: 8px; background: var(--canvas); }
.dev-console-loading, .dev-console-gate { padding: 28px; color: var(--muted); font-size: 13px; }
.dev-console-gate { display: grid; justify-items: start; gap: 12px; }
.dev-console-gate h3, .dev-console-gate p { margin: 0; }
.dev-console-gate h3 { font-size: 18px; }
.dev-console-gate p { max-width: 580px; line-height: 1.65; }
.dev-console-gate a { min-height: 40px; display: inline-flex; align-items: center; border-radius: 6px; background: var(--blue); color: #fff; padding: 0 15px; font-size: 12px; font-weight: 800; }
.dev-key-toolbar { display: grid; grid-template-columns: 1fr auto; gap: 12px; border-bottom: 1px solid var(--line); padding: 18px; }
.dev-key-toolbar label { display: grid; gap: 7px; color: var(--subtle); font-size: 11px; font-weight: 700; }
.dev-key-toolbar input { width: 100%; min-height: 42px; border: 1px solid #cfd7e2; border-radius: 6px; background: #fff; color: var(--ink); padding: 0 12px; outline: none; }
.dev-key-toolbar input:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1); }
.dev-key-toolbar button, .dev-secret-actions button { align-self: end; min-height: 42px; border: 0; border-radius: 6px; background: var(--blue); color: #fff; padding: 0 16px; font-size: 12px; font-weight: 800; }
.dev-key-limits { display: flex; flex-wrap: wrap; gap: 10px 18px; border-bottom: 1px solid var(--line); background: #fff; padding: 12px 18px; color: var(--subtle); font-size: 11px; }
.dev-key-list { display: grid; }
.dev-key-row { display: grid; grid-template-columns: minmax(0, 1fr) auto auto; align-items: center; gap: 18px; border-bottom: 1px solid var(--line); background: #fff; padding: 17px 18px; }
.dev-key-row:last-child { border-bottom: 0; border-radius: 0 0 8px 8px; }
.dev-key-row.revoked { opacity: 0.55; }
.dev-key-main { min-width: 0; display: grid; gap: 5px; }
.dev-key-main strong { font-size: 13px; }
.dev-key-main span { color: var(--subtle); font-size: 11px; overflow-wrap: anywhere; }
.dev-key-usage { display: grid; gap: 4px; text-align: right; }
.dev-key-usage strong { font-size: 12px; }
.dev-key-usage span { color: var(--subtle); font-size: 10px; }
.dev-key-row button { min-height: 34px; border: 1px solid #efc2bc; border-radius: 6px; background: #fff; color: #c33f32; padding: 0 11px; font-size: 11px; font-weight: 800; }
.dev-key-empty { background: #fff; padding: 24px 18px; color: var(--subtle); font-size: 12px; }
.dev-secret-panel { border-bottom: 1px solid #b8dcce; background: #eefaf6; padding: 20px 18px; }
.dev-secret-panel strong { color: #00684e; font-size: 13px; }
.dev-secret-panel p { margin: 7px 0 14px; color: #42635a; font-size: 12px; line-height: 1.6; }
.dev-secret-value { display: block; overflow: auto; border: 1px solid #b8dcce; border-radius: 6px; background: #fff; color: #173f34; padding: 13px; font-size: 12px; white-space: nowrap; }
.dev-secret-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.dev-secret-actions button { min-height: 36px; background: var(--green); }

.dev-footer { min-height: 190px; display: grid; grid-template-columns: 1fr auto; gap: 26px; align-items: start; border-top: 1px solid var(--line); background: var(--canvas); padding: 42px max(28px, calc((100vw - 1180px) / 2)); }
.dev-footer > div { display: flex; align-items: center; gap: 16px; }
.dev-footer img { width: 78px; }
.dev-footer div span, .dev-footer > span { color: var(--subtle); font-size: 11px; }
.dev-footer nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 18px; color: var(--muted); font-size: 11px; font-weight: 700; }
.dev-footer > span { grid-column: 1 / -1; }
.dev-toast { position: fixed; right: 20px; bottom: 20px; z-index: 30; max-width: min(380px, calc(100% - 40px)); transform: translateY(18px); opacity: 0; border-radius: 6px; background: var(--ink); color: #fff; padding: 12px 15px; font-size: 12px; pointer-events: none; transition: opacity 160ms ease, transform 160ms ease; }
.dev-toast.show { transform: translateY(0); opacity: 1; }

@media (max-width: 900px) {
  .dev-header { grid-template-columns: 1fr auto; padding: 0 20px; }
  .dev-header > nav { display: none; }
  .dev-hero { min-height: 0; grid-template-columns: 1fr; gap: 42px; padding: 58px 24px; }
  .dev-hero h1 { font-size: 40px; }
  .dev-layout { width: min(100% - 40px, 820px); display: block; }
  .dev-sidebar { position: static; display: flex; overflow-x: auto; padding: 22px 0 0; white-space: nowrap; }
  .dev-sidebar strong { display: none; }
  .dev-sidebar a { border-left: 0; border-bottom: 2px solid transparent; padding: 10px; }
  .dev-sidebar a:hover { border-bottom-color: var(--blue); }
  .dev-section { padding: 58px 0; }
}

@media (max-width: 620px) {
  .dev-brand span { display: none; }
  .dev-header-cta { min-width: 70px; padding: 0 12px; }
  .dev-hero { padding: 44px 20px; }
  .dev-hero h1 { font-size: 34px; }
  .dev-hero-copy > p { font-size: 15px; }
  .dev-hero-facts { gap: 10px; }
  .dev-terminal pre { min-height: 310px; padding: 18px; font-size: 11px; }
  .dev-layout { width: calc(100% - 32px); }
  .dev-section h2 { font-size: 25px; }
  .dev-capabilities { grid-template-columns: 1fr; }
  .dev-parameter-table > div { grid-template-columns: minmax(100px, 0.85fr) minmax(110px, 1fr); }
  .dev-parameter-table span { grid-column: 1 / -1; padding-top: 0; }
  .dev-event-grid { grid-template-columns: 1fr; }
  .dev-event-grid div:nth-child(odd) { border-right: 0; }
  .dev-header-list { grid-template-columns: 1fr; }
  .dev-header-list code { padding-bottom: 3px; border-bottom: 0; }
  .dev-header-list span { padding-top: 3px; }
  .dev-error-table div { grid-template-columns: 44px minmax(0, 1fr); }
  .dev-error-table span { grid-column: 2; padding-top: 0; }
  .dev-key-toolbar { grid-template-columns: 1fr; }
  .dev-key-row { grid-template-columns: minmax(0, 1fr) auto; }
  .dev-key-usage { grid-column: 1; grid-row: 2; text-align: left; }
  .dev-footer { grid-template-columns: 1fr; }
  .dev-footer nav { justify-content: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  :root { scroll-behavior: auto; }
  .dev-toast { transition: none; }
}