@font-face { font-family: "CMU Serif"; src: url("/assets/fonts/cmu-serif-500-roman.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "CMU Serif"; src: url("/assets/fonts/cmu-serif-700-roman.woff2") format("woff2"); font-weight: 700; font-style: normal; font-display: swap; }
@font-face { font-family: "CMU Serif"; src: url("/assets/fonts/cmu-serif-500-italic.woff2") format("woff2"); font-weight: 400; font-style: italic; font-display: swap; }
@font-face { font-family: "CMU Serif"; src: url("/assets/fonts/cmu-serif-700-italic.woff2") format("woff2"); font-weight: 700; font-style: italic; font-display: swap; }
@font-face { font-family: "CMU Typewriter Text"; src: url("/assets/fonts/cmu-typewriter-text-500-roman.woff2") format("woff2"); font-display: swap; }

:root {
  --paper: #f4f2ec;
  --paper-deep: #e9e6dd;
  --ink: #17221f;
  --ink-soft: #52605b;
  --line: #d2d0c8;
  --accent: #db6032;
  --accent-light: #f2a17d;
  --green: #b9d79b;
  --white: #fffefa;
  --radius: 1.25rem;
  --shell: min(1180px, calc(100% - 3rem));
  --mono: "CMU Typewriter Text", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "CMU Serif", "Palatino Linotype", Palatino, Georgia, serif;
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
svg { display: block; }
.shell { width: var(--shell); margin-inline: auto; }
.skip-link { position: fixed; z-index: 20; top: .75rem; left: .75rem; padding: .65rem 1rem; background: var(--ink); color: white; transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }

.site-header { border-bottom: 1px solid var(--line); }
.header-inner { min-height: 5.25rem; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.brand { display: inline-flex; align-items: center; gap: .75rem; text-decoration: none; font-size: 1rem; letter-spacing: -.02em; }
.brand strong { color: var(--accent); font-weight: 650; }
.brand-mark { width: 2rem; height: 2rem; }
.site-nav { display: flex; align-items: center; gap: 2.1rem; font-size: .88rem; font-weight: 550; }
.site-nav a { text-decoration: none; }
.site-nav a:not(.nav-cta):hover { color: var(--accent); }
.site-nav a[aria-current="page"]:not(.nav-cta) { color: var(--ink-soft); }
.nav-cta { padding: .55rem 1.1rem; border: 1px solid var(--ink); border-radius: .15rem; transition: background .2s, color .2s; }
.nav-cta:hover { background: var(--ink); color: var(--white); }

.hero { width: var(--shell); margin-inline: auto; padding-block: 5rem 4.5rem; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { text-wrap: balance; }
h1 { margin-bottom: 1.6rem; font-size: clamp(1.15rem, 1rem + 1.7vw, 2.3rem); font-weight: 700; letter-spacing: .01em; line-height: 1.25; white-space: nowrap; }
h1 em { color: var(--accent); font-style: italic; }
.hero-lede { margin: 0 0 1.8rem; max-width: 42rem; color: var(--ink-soft); font-size: 1.05rem; }
.keywords { margin: 0 0 2rem; font-variant: small-caps; letter-spacing: .06em; font-size: 1.02rem; }
.section > .keywords:last-child { margin-bottom: 0; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 1.2rem; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: .8rem; min-height: 3rem; padding: .7rem 1.5rem; border: 1px solid var(--ink); border-radius: .15rem; text-decoration: none; font-size: .92rem; font-weight: 700; transition: background .2s, color .2s; }
.button-primary { color: var(--white); background: var(--ink); }
.button-primary:hover { background: var(--accent); border-color: var(--accent); }
.text-link { display: inline-flex; align-items: center; gap: .5rem; color: var(--ink); text-underline-offset: .3rem; font-size: .92rem; font-weight: 700; }

.rule { border: 0; border-top: 1px solid var(--line); margin: 0 auto; width: var(--shell); }
.section { width: var(--shell); margin-inline: auto; padding-block: 3.5rem 4.5rem; }
.section-lead { margin: 0 0 1.8rem; max-width: 44rem; font-size: 1.05rem; line-height: 1.7; }
.section-lead:last-child { margin-bottom: 0; }
.section-lead strong { font-weight: 700; }
.about-page .hero { padding-block: 4.5rem .7rem; }
.about-page .section { padding-block: .7rem; }
.about-page .section:last-of-type { padding-bottom: 4.5rem; }
.hero-quote { margin: 0 0 1.8rem; padding-left: 1.5rem; border-left: 2px solid var(--line); }
.hero-quote p { margin: 0; font-size: 1.02rem; line-height: 1.75; }
.hero-quote cite { display: block; margin-top: .8rem; color: var(--ink-soft); font-size: .85rem; font-style: normal; text-align: left; }

.site-footer { margin-top: 5rem; padding-block: 2.5rem; border-top: 1px solid var(--line); }
.footer-inner { display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 3rem; color: var(--ink-soft); font-size: .75rem; }
.footer-inner p { margin-bottom: 0; }

/* API access */
.access-intro { padding-block: 5rem 4rem; border-bottom: 1px solid var(--line); }
.access-intro h1 { margin-bottom: 1.2rem; }
.access-intro > p:last-child { max-width: 42rem; margin-bottom: 0; color: var(--ink-soft); font-size: 1.15rem; }
.step-label { margin-bottom: .9rem; color: var(--accent); font-family: var(--mono); font-size: .67rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.setup-intro h2 { margin-bottom: 0; font-size: 1.35rem; font-weight: 700; line-height: 1.25; }
.setup-intro .privacy-badge { margin-top: 1.25rem; }
.privacy-badge { display: inline-flex; flex: 0 0 auto; align-items: center; gap: .45rem; padding: .45rem .7rem; border: 1px solid #b9ccb0; border-radius: .15rem; color: #416137; background: #f0f6eb; font-size: .67rem; font-weight: 700; letter-spacing: .03em; text-transform: uppercase; }
.privacy-badge svg { width: .85rem; fill: none; stroke: currentColor; stroke-width: 1.5; }
.key-form { max-width: 660px; }
.key-form > label { display: block; margin-bottom: .6rem; font-size: .8rem; font-weight: 700; }
.key-field { position: relative; }
.key-field input { width: 100%; min-height: 3.8rem; padding: .9rem 5rem .9rem 1.1rem; border: 1px solid #9da39f; border-radius: .65rem; color: var(--ink); background: #fbfaf7; font: 1rem var(--mono); }
.key-field input:focus { border-color: var(--accent); outline: 3px solid rgb(219 96 50 / .16); }
.field-action { position: absolute; top: 50%; right: .65rem; padding: .45rem .6rem; border: 0; color: var(--ink-soft); background: transparent; font-family: inherit; font-size: .72rem; font-weight: 700; transform: translateY(-50%); cursor: pointer; }
.field-action:hover { color: var(--accent); }
.field-help { margin: .55rem 0 0; color: var(--ink-soft); font-size: .72rem; }
.form-actions { display: flex; flex-wrap: wrap; gap: .7rem; margin-top: 1.6rem; }
.button-ghost { border-color: var(--line); color: var(--ink-soft); background: transparent; cursor: pointer; }
.button-ghost:hover { color: var(--ink); background: var(--paper); }
.quota-status { min-height: 1.5rem; margin-top: 1.5rem; font-size: .82rem; }
.status-loading, .status-success, .status-error { padding: .75rem 1rem; border-left: 3px solid; }
.status-loading { border-color: #d09c39; background: #fbf4e5; }
.status-success { border-color: #6d9d58; background: #f0f6eb; }
.status-error { border-color: #b94d39; background: #faece8; }
.quota-results { margin-top: 2.5rem; padding-top: 2.5rem; border-top: 1px solid var(--line); }
.result-summary { display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.result-summary .eyebrow { margin-bottom: .5rem; }
.result-summary h3 { margin-bottom: 0; font-family: Georgia, serif; font-size: 2rem; font-weight: 400; }
.key-state { display: inline-flex; align-items: center; gap: .45rem; font-size: .7rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.key-state::before { content: ""; width: .5rem; height: .5rem; border-radius: 50%; }
.state-active::before { background: #6d9d58; box-shadow: 0 0 0 4px rgb(109 157 88 / .14); }
.state-inactive::before { background: #b94d39; box-shadow: 0 0 0 4px rgb(185 77 57 / .14); }
.result-warning { margin: 1.5rem 0 0; padding: 1rem; border: 1px solid #e5b9ae; border-radius: .5rem; background: #faece8; font-size: .85rem; }
.result-section { margin-top: 2.5rem; }
.result-title { margin-bottom: 1rem; font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; }
.metrics-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: .75rem; }
.metric-card { min-width: 0; padding: 1.2rem; border: 1px solid var(--line); border-radius: .75rem; background: var(--paper); }
.metric-label, .metric-reset { margin-bottom: 0; color: var(--ink-soft); font-size: .68rem; }
.metric-value { margin: .35rem 0 .9rem; font-family: Georgia, serif; font-size: 1.5rem; line-height: 1.2; }
.metric-maximum { color: var(--ink-soft); font-family: ui-sans-serif, sans-serif; font-size: .65rem; }
.quota-progress { width: 100%; height: .35rem; display: block; margin-bottom: .7rem; border: 0; border-radius: 1rem; overflow: hidden; background: var(--line); }
.quota-progress::-webkit-progress-bar { background: var(--line); }.quota-progress::-webkit-progress-value { background: var(--accent); }.quota-progress::-moz-progress-bar { background: var(--accent); }
.empty-note { grid-column: 1 / -1; margin-bottom: 0; padding: 1.2rem; border: 1px dashed var(--line); color: var(--ink-soft); font-size: .85rem; }
.model-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: .75rem; }
.model-card { padding: 1.2rem; border: 1px solid var(--line); border-radius: .75rem; }
.model-heading { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.model-heading h4 { margin: 0; font: 400 1.2rem Georgia, serif; }
.model-provider { padding: .2rem .45rem; border-radius: .25rem; color: var(--ink-soft); background: var(--paper); font: .62rem var(--mono); }
.model-facts { display: grid; grid-template-columns: auto 1fr; gap: .4rem 1rem; margin: 0; font-size: .72rem; }
.model-facts dt { color: var(--ink-soft); }.model-facts dd { margin: 0; text-align: right; }

.setup-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem 5rem; align-items: end; margin-bottom: 2.5rem; }
.setup-intro > p { margin-bottom: 0; color: var(--ink-soft); }
.setup-steps { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.setup-steps > li { display: grid; grid-template-columns: .75fr 1.25fr; gap: clamp(2rem, 7vw, 7rem); padding-block: 3rem; border-bottom: 1px solid var(--line); }
.step-copy { display: grid; grid-template-columns: 2rem 1fr; gap: 1rem; }
.step-copy > span { width: 1.7rem; height: 1.7rem; display: grid; place-items: center; border: 1px solid var(--ink); border-radius: 50%; font: .65rem var(--mono); }
.step-copy h3 { margin: .05rem 0 .5rem; font: 400 1.5rem Georgia, serif; }
.step-copy p { margin-bottom: 0; color: var(--ink-soft); font-size: .88rem; }
.step-copy code { padding: .1rem .25rem; border-radius: .2rem; background: var(--paper-deep); font-size: .78rem; }
.code-block { min-width: 0; overflow: hidden; border: 1px solid #34423d; border-radius: .75rem; color: #e9ece8; background: #17221f; box-shadow: 0 16px 40px rgb(23 34 31 / .08); }
.code-toolbar { min-height: 2.8rem; display: flex; align-items: center; justify-content: space-between; padding-inline: 1rem; border-bottom: 1px solid #34423d; color: #9caaa4; font: .65rem var(--mono); }
.copy-button { padding: .35rem .55rem; border: 1px solid #4d5b56; border-radius: .3rem; color: #dce3df; background: transparent; font: inherit; cursor: pointer; }
.copy-button:disabled { opacity: .4; cursor: not-allowed; }
.copy-button:disabled:hover { border-color: #4d5b56; color: #dce3df; }
.credential-warning { margin: 0 0 .75rem; padding: .8rem 1rem; border: 1px solid #e0c184; border-radius: .5rem; color: #7a5a17; background: #fbf4e5; font-size: .78rem; }
.credential-warning strong { color: #5e440e; }
.copy-button:hover { border-color: var(--accent-light); color: var(--accent-light); }
.code-block pre { margin: 0; padding: 1.25rem; overflow-x: auto; }
.code-block code { font: .75rem/1.7 var(--mono); }
.security-note { display: grid; grid-template-columns: 2rem 1fr; gap: 1.2rem; padding: 2rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper-deep); }
.security-icon { width: 1.8rem; height: 1.8rem; display: grid; place-items: center; border: 1px solid var(--ink); border-radius: 50%; font: italic 1rem Georgia, serif; }
.security-note h2 { margin-bottom: .35rem; font: 400 1.25rem Georgia, serif; }
.security-note p { max-width: 60rem; margin-bottom: 0; color: var(--ink-soft); font-size: .82rem; }

/* Error page */
.not-found { min-height: 100vh; display: flex; flex-direction: column; padding-block: 2.5rem; overflow: hidden; }
.not-found-copy { position: relative; z-index: 1; max-width: 720px; margin-block: auto; padding-block: 5rem; }
.error-code { margin-bottom: 1.2rem; color: var(--accent); font: 700 .68rem var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.not-found-copy h1 { margin-bottom: 1.5rem; }
.not-found-copy > p:not(.error-code) { max-width: 32rem; margin-bottom: 2rem; color: var(--ink-soft); font-size: 1.1rem; }
.not-found-plot { position: absolute; right: 0; bottom: 6%; width: min(48vw, 640px); opacity: .7; }
.not-found-plot path { fill: none; stroke: var(--line); stroke-width: 2; stroke-dasharray: 4 6; }

@media (prefers-reduced-motion: no-preference) {
  .hero > * { animation: rise .6s ease-out both; }
  .hero > :nth-child(2) { animation-delay: .06s; }.hero > :nth-child(3) { animation-delay: .12s; }.hero > :nth-child(4) { animation-delay: .18s; }.hero > :nth-child(5) { animation-delay: .24s; }
  @keyframes rise { from { opacity: 0; transform: translateY(12px); } }
}

@media (max-width: 900px) {
  .setup-steps > li { grid-template-columns: 1fr; gap: 2rem; }
  .setup-intro { grid-template-columns: 1fr; gap: 1.5rem; }
}

@media (max-width: 620px) {
  :root { --shell: min(100% - 2rem, 1180px); }
  .header-inner { min-height: 4.5rem; }
  .site-nav { gap: 1rem; }
  .site-nav > a:not(.nav-cta) { font-size: .82rem; }
  h1 { white-space: normal; text-wrap: balance; }
  .hero { padding-block: 4rem 5rem; }
  .keywords { line-height: 1.9; }
  .section { padding-block: 3.5rem 4.5rem; }
  .footer-inner { grid-template-columns: 1fr; gap: 1rem; }
  .access-intro { padding-block: 4rem 3rem; }
  .metrics-grid, .model-grid { grid-template-columns: 1fr; }
  .setup-steps > li { padding-block: 2.5rem; }
  .security-note { align-items: start; }
}