/* Nova의 색상, Pretendard 서체, 카드와 여백 체계를 사용하는 독립 정적 페이지. */
:root {
    color-scheme: light;
    --surface: #fbfbfd;
    --card: #fff;
    --muted: #f5f5f7;
    --ink: #1d1d1f;
    --ink-secondary: #424245;
    --ink-muted: #6e6e73;
    --line: rgba(0, 0, 0, .08);
    --line-strong: rgba(0, 0, 0, .16);
    --blue: #0066cc;
    --blue-soft: #eef5ff;
    --green: #207345;
    --green-soft: #edf7f0;
    --mono: 'JetBrains Mono', 'SF Mono', ui-monospace, Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 2rem; }
body { margin: 0; background: var(--surface); color: var(--ink); font-family: 'SF Pro KR', 'SF Pro Display', 'Pretendard Variable', Pretendard, -apple-system, BlinkMacSystemFont, 'Apple SD Gothic Neo', Roboto, 'Noto Sans KR', 'Segoe UI', 'Malgun Gothic', sans-serif; font-size: 1.0625rem; line-height: 1.6; word-break: keep-all; overflow-wrap: break-word; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible, pre:focus-visible { outline: 3px solid var(--blue); outline-offset: 5px; border-radius: 6px; }
h1, h2, h3, p { margin: 0; }
svg { display: block; width: 24px; height: 24px; flex-shrink: 0; }
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.skip-link { position: absolute; top: -100px; left: 16px; z-index: 2; padding: 12px 20px; background: var(--ink); color: var(--card); border-radius: 24px; }
.skip-link:focus { top: 12px; }
.shell { width: min(100% - 6rem, 1160px); margin-inline: auto; }
.site-header { border-bottom: 1px solid var(--line); }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 76px; }
.brand { display: inline-flex; align-items: center; gap: 18px; min-height: 44px; font-size: 1.25rem; font-weight: 750; letter-spacing: -.04em; }
.brand-divider { width: 1px; height: 18px; background: var(--line-strong); }
.brand-label { color: var(--ink-muted); font-size: .875rem; font-weight: 500; letter-spacing: -.01em; }
.nav-link { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; font-size: .875rem; font-weight: 600; }
.nav-link:hover, .footer a:hover { color: var(--blue); }
.hero { padding-block: 88px 76px; text-align: center; }
.eyebrow { margin-bottom: 22px; color: var(--blue); font-size: .75rem; font-weight: 700; letter-spacing: .15em; }
h1 { font-size: clamp(2.625rem, 5.5vw, 4.75rem); line-height: 1.13; letter-spacing: -.055em; font-weight: 700; text-wrap: balance; }
h1 span { color: var(--ink-muted); }
.hero-description { margin-top: 24px; color: var(--ink-secondary); font-size: 1.1875rem; }
.mobile-break { display: none; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 20px; min-height: 48px; padding: 12px 24px; border-radius: 999px; font-size: 1rem; font-weight: 600; }
.primary { margin-top: 32px; background: var(--blue); color: #fff; transition: filter .15s; }
.primary:hover { filter: brightness(.9); }
.hero-note { margin-top: 16px; color: var(--ink-muted); font-size: .8125rem; }
.steps-band { padding-block: 64px 56px; background: var(--muted); border-block: 1px solid var(--line); }
.section-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 28px; }
.section-heading h2 { font-size: clamp(1.5rem, 2.5vw, 2rem); line-height: 1.25; letter-spacing: -.04em; }
.section-heading p { color: var(--ink-muted); font-size: .9375rem; }
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin: 0; padding: 0; list-style: none; }
.step-card { display: flex; flex-direction: column; min-width: 0; padding: 32px; background: var(--card); border: 1px solid var(--line); border-radius: 24px; }
.step-top { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }
.step-number { display: inline-grid; place-items: center; width: 36px; height: 36px; border-radius: 50%; background: var(--blue-soft); color: var(--blue); font-size: .875rem; font-weight: 650; font-variant-numeric: tabular-nums; }
.step-label { color: var(--ink-muted); font-size: .8125rem; font-weight: 600; }
.step-card h3 { margin-bottom: 16px; font-size: clamp(1.5rem, 2.2vw, 1.875rem); line-height: 1.3; letter-spacing: -.04em; }
.step-card > p, .request-intro > p { color: var(--ink-secondary); font-size: 1rem; line-height: 1.7; }
.step-card strong { color: var(--ink); font-weight: 600; }
.card-visual { display: flex; min-height: 104px; margin-top: 28px; margin-bottom: 16px; padding: 18px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); font-size: .8125rem; }
.signin-visual { flex-direction: column; align-items: center; justify-content: center; gap: 10px; }
.avatar { display: grid; place-items: center; width: 36px; height: 36px; background: var(--muted); border: 1px solid var(--line); border-radius: 50%; color: var(--ink-muted); }
.avatar svg { width: 22px; height: 22px; }
.location-visual { flex-direction: column; justify-content: center; gap: 12px; }
.location-visual > span { color: var(--ink-muted); font-size: .75rem; }
.location-visual > span span { padding-inline: 6px; }
.location-visual strong { display: flex; align-items: center; gap: 8px; font-size: .9375rem; }
.location-visual svg { width: 20px; height: 20px; color: var(--blue); }
.key-visual { flex-direction: column; justify-content: center; gap: 12px; }
.visual-caption { color: var(--ink-muted); font-size: .75rem; }
.key-visual > div { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.masked-key { letter-spacing: .12em; }
.copy-preview { display: flex; align-items: center; gap: 5px; color: var(--blue); white-space: nowrap; }
.copy-preview svg { width: 15px; height: 15px; }
.text-link { display: inline-flex; align-items: center; align-self: flex-start; gap: 8px; min-height: 44px; color: var(--blue); font-size: .875rem; font-weight: 600; }
.text-link:hover { text-decoration: underline; text-underline-offset: 4px; }
.step-card > .text-link, .step-card > .card-caption { margin-top: auto; }
.step-card > .card-caption, .card-caption { color: var(--ink-muted); font-size: .8125rem; line-height: 1.6; }
.request-card { grid-column: 1 / -1; display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.35fr); gap: 56px; padding: 40px; }
.request-intro { min-width: 0; }
.request-intro > .request-hint { margin-top: 20px; color: var(--ink-muted); font-size: .875rem; }
code { font-family: var(--mono); font-size: .875em; overflow-wrap: anywhere; }
p code { padding: 2px 4px; border-radius: 4px; background: var(--muted); color: var(--ink); }
.success-note { display: flex; align-items: center; gap: 12px; margin-top: 28px; }
.success-note > span:last-child { font-size: .9375rem; }
.check-mark { display: grid; place-items: center; flex-shrink: 0; width: 32px; height: 32px; border-radius: 50%; color: var(--green); background: var(--green-soft); font-size: 1rem; }
.request-examples { min-width: 0; }
.example-panel { margin-bottom: 12px; overflow: hidden; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.panel-heading { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 4px 12px; min-height: 46px; padding: 4px 16px; border-bottom: 1px solid var(--line); color: var(--ink-muted); font-size: .75rem; }
.panel-heading > span:first-child { display: inline-flex; align-items: center; gap: 8px; }
.method { color: var(--blue); font-family: var(--mono); font-size: .6875rem; font-weight: 700; }
.copy-button { min-height: 36px; padding: 4px 8px; border: 0; border-radius: 6px; background: transparent; color: var(--blue); font-size: .75rem; font-weight: 600; cursor: pointer; }
.copy-button:hover { background: var(--blue-soft); }
pre { margin: 0; padding: 18px 16px; white-space: pre-wrap; word-break: break-all; overflow-wrap: anywhere; font-family: var(--mono); font-size: .875rem; line-height: 1.8; }
pre code { font-size: inherit; }
.status-code { color: var(--green); font-family: var(--mono); font-size: .75rem; }
.response-panel pre { color: var(--green); }
.copy-feedback { min-height: 1.5em; color: var(--ink-muted); font-size: .75rem; }
.help-note { display: flex; align-items: flex-start; gap: 16px; margin-top: 28px; padding: 12px 8px; }
.info-icon { display: grid; place-items: center; width: 20px; height: 20px; margin-top: 3px; flex-shrink: 0; border: 1px solid var(--ink-muted); border-radius: 50%; color: var(--ink-muted); font-size: .75rem; font-weight: 600; }
.help-note h3 { margin-bottom: 4px; font-size: .9375rem; font-weight: 600; }
.help-note p { color: var(--ink-muted); font-size: .875rem; }
.help-note .text-link { margin-left: auto; flex-shrink: 0; }
.footer { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-block: 32px; color: var(--ink-muted); font-size: .8125rem; }
.footer p { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 24px; }
.footer strong { color: var(--ink-secondary); font-size: .9375rem; }
.footer a { display: inline-flex; align-items: center; gap: 6px; min-height: 44px; flex-shrink: 0; }
@media (prefers-color-scheme: dark) {
    :root { color-scheme: dark; --surface: #000; --card: #1c1c1e; --muted: #131316; --ink: #f5f5f7; --ink-secondary: #cfd0d3; --ink-muted: #a1a1a6; --line: rgba(255, 255, 255, .1); --line-strong: rgba(255, 255, 255, .16); --blue: #8ac4ff; --blue-soft: #172a3b; --green: #83d4a1; --green-soft: #163525; }
    .primary { background: #0066cc; }
    .card-visual, .example-panel { background: var(--muted); }
}
@media (min-width: 601px) and (max-width: 1023px) {
    .shell { width: calc(100% - 3rem); }
    .steps { grid-template-columns: minmax(0, 1fr); gap: 16px; }
    .step-card { padding: 32px; }
    .step-card:not(.request-card) { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 28px; }
    .step-card:not(.request-card) .step-top { grid-column: 1 / -1; }
    .step-card > h3, .step-card > p { grid-column: 1; }
    .card-visual { grid-column: 2; grid-row: 2 / 4; align-self: center; margin: 0; }
    .step-card > .text-link, .step-card > .card-caption { grid-column: 1 / -1; margin-top: 16px; }
    .request-card { grid-template-columns: minmax(0, 1fr); gap: 28px; }
    .copy-button { min-height: 44px; }
}
@media (max-width: 600px) {
    .shell { width: calc(100% - 2rem); }
    .nav { min-height: 64px; gap: 12px; }
    .brand { gap: 10px; font-size: 1.125rem; }
    .brand-label { font-size: .75rem; }
    .brand-divider { height: 14px; }
    .nav-link { font-size: .8125rem; gap: 4px; }
    .hero { padding-block: 56px 48px; }
    h1 { font-size: clamp(2rem, 8.5vw, 3rem); }
    .eyebrow { margin-bottom: 20px; font-size: .6875rem; }
    .hero-description { font-size: 1rem; }
    .mobile-break { display: initial; }
    .primary { margin-top: 24px; }
    .steps-band { padding-block: 36px 24px; }
    .section-heading { display: block; margin-bottom: 24px; }
    .section-heading p { margin-top: 8px; font-size: .875rem; }
    .steps { grid-template-columns: minmax(0, 1fr); gap: 16px; }
    .step-card { padding: 28px 24px; border-radius: 20px; }
    .step-top { margin-bottom: 20px; }
    .step-card h3 { font-size: 1.625rem; }
    .card-visual { margin-top: 24px; }
    .request-card { display: block; }
    .request-examples { margin-top: 28px; }
    .panel-heading { padding-inline: 12px; }
    .copy-button { min-height: 44px; }
    pre { padding: 14px 12px; font-size: .75rem; }
    .help-note { display: grid; grid-template-columns: 20px minmax(0, 1fr); gap: 8px 12px; margin-top: 24px; }
    .help-note .text-link { grid-column: 2; margin-left: 0; }
    .footer { display: block; padding-block: 24px; }
    .footer p { display: grid; gap: 4px; }
    .footer a { margin-top: 12px; }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { transition: none !important; }
}