/* Capless site. System fonts, no external resources, light + dark. */

:root {
  --bg: #ffffff;
  --fg: #16161a;
  --muted: #61646b;
  --line: #e6e5e1;
  --soft: #f6f5f2;
  --card: #ffffff;
  --code: #f6f5f2;
  --link: #16161a;
  --accent: #16161a;
  --accent-hover: #34343a;
  --accent-fg: #ffffff;
  --ring: #2f6fdb;
  --ok: #1d7a46;
  --err: #b42318;
  --mark: #c2410c;
  --radius: 8px;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --serif: ui-serif, "New York", "Iowan Old Style", Charter, "Source Serif Pro", Georgia, serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111113;
    --fg: #ededea;
    --muted: #9c9c97;
    --line: #2a2a2d;
    --soft: #19191c;
    --card: #19191c;
    --code: #19191c;
    --link: #ededea;
    --accent: #ededea;
    --accent-hover: #ffffff;
    --accent-fg: #111113;
    --ring: #7aa7ff;
    --ok: #5ccf8c;
    --err: #f97066;
    --mark: #fb923c;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 72px; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.6 var(--sans); text-rendering: optimizeLegibility; }
a { color: var(--link); text-decoration-color: color-mix(in srgb, currentColor 35%, transparent); text-underline-offset: 3px; }
a:hover { text-decoration-color: currentColor; }
:focus-visible { outline: 2px solid var(--ring); outline-offset: 2px; border-radius: 4px; }
img, svg { max-width: 100%; }
code, pre { font-family: var(--mono); font-size: 0.875em; }
h1, h2, h3 { line-height: 1.2; letter-spacing: -0.015em; }
.wrap { max-width: 1160px; margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 820px; }
.center { text-align: center; }
.muted { color: var(--muted); }
.small { font-size: 0.875rem; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--fg); color: var(--bg); padding: 8px 12px; border-radius: 6px; z-index: 10; }
.skip:focus { left: 8px; }

/* Header */
.top { position: sticky; top: 0; z-index: 5; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: saturate(1.4) blur(10px); -webkit-backdrop-filter: saturate(1.4) blur(10px); border-bottom: 1px solid var(--line); }
.bar { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 12px; }
.brand { display: inline-flex; align-items: center; gap: 8px; color: var(--fg); text-decoration: none; font-weight: 650; font-size: 1.05rem; letter-spacing: -0.01em; }
.logo { flex: none; border-radius: 6px; }
.links { display: flex; align-items: center; gap: 4px; }
.links a { color: var(--fg); text-decoration: none; padding: 6px 10px; border-radius: 8px; font-size: 0.95rem; }
.links a:hover { background: var(--soft); }
.links a[aria-current="page"] { font-weight: 600; }
.links a.btn { color: var(--accent-fg); margin-left: 6px; }
.links a.btn:hover { background: var(--accent-hover); }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 42px; padding: 0 16px; border-radius: 7px; border: 1px solid transparent; background: var(--accent); color: var(--accent-fg); font: 600 0.95rem/1 var(--sans); text-decoration: none; cursor: pointer; white-space: nowrap; }
.btn:hover { background: var(--accent-hover); }
.btn[disabled] { opacity: 0.6; cursor: progress; }
.btn-sm { min-height: 36px; padding: 0 14px; }
.btn-ghost { background: transparent; color: var(--fg); border-color: var(--line); }
.btn-ghost:hover { background: var(--soft); }

/* Page heads (pricing, 404) */
.hero { padding: 64px 0 40px; border-bottom: 1px solid var(--line); }
.hero-sm { padding: 56px 0 40px; }
.hero h1, .intro h1, .band h2 { font-weight: 650; letter-spacing: -0.025em; }
.hero h1 { font-size: clamp(2rem, 4.4vw, 2.8rem); margin: 0 0 14px; }
.center h1 { margin-left: auto; margin-right: auto; }
.lede { font-size: 1.12rem; color: var(--muted); max-width: 58ch; margin: 0 0 28px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 24px; }

/* Landing */
.intro { padding: 72px 0 64px; border-bottom: 1px solid var(--line); }
.intro-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 56px; align-items: start; }
.intro h1 { font-size: clamp(2.1rem, 4.2vw, 3.1rem); line-height: 1.08; margin: 0 0 20px; max-width: 16ch; letter-spacing: -0.035em; }
.intro .lede { margin-bottom: 28px; }
.signup { display: flex; gap: 8px; max-width: 460px; margin: 0 0 10px; }
.signup input { flex: 1; min-width: 0; min-height: 42px; padding: 0 12px; border-radius: 7px; border: 1px solid var(--line); background: var(--bg); color: var(--fg); font: inherit; font-size: 16px; }
.signup input:focus { outline: 2px solid var(--ring); outline-offset: 0; border-color: transparent; }
.signup input[aria-invalid="true"] { border-color: var(--err); }
.fine { color: var(--muted); font-size: 0.88rem; margin: 0 0 18px; }
#signup-status:not(:empty) { max-width: 460px; margin: 0 0 16px; padding: 10px 12px; border-radius: 7px; font-size: 0.9rem; border: 1px solid color-mix(in srgb, var(--err) 45%, transparent); }
#signup-status.info { border-color: var(--line); background: var(--soft); }
.result { max-width: 520px; }
.result p { margin: 0 0 10px; }
.result details { margin: 12px 0 0; font-size: 0.9rem; }
.result summary { cursor: pointer; color: var(--muted); margin-bottom: 8px; }
.agent { margin-top: 36px; padding-top: 20px; border-top: 1px solid var(--line); max-width: 520px; }
.agent p { margin: 0 0 8px; color: var(--muted); font-size: 0.92rem; }
.snippet { display: flex; align-items: flex-start; gap: 10px; background: var(--code); border: 1px solid var(--line); border-radius: var(--radius); padding: 10px 10px 10px 12px; margin: 0 0 10px; }
.snippet code { flex: 1; min-width: 0; font-size: 0.82rem; line-height: 1.55; overflow-wrap: anywhere; white-space: pre-wrap; }
.copy { flex: none; font: 500 0.75rem/1 var(--sans); padding: 6px 9px; min-height: 28px; border-radius: 6px; border: 1px solid var(--line); background: var(--bg); color: var(--fg); cursor: pointer; }
.copy:hover { background: var(--soft); }
.copy.done { color: var(--ok); border-color: currentColor; }

.artifact { margin: 4px 0 0; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; background: var(--code); }
.artifact .file { display: flex; justify-content: space-between; gap: 12px; padding: 8px 14px; font: 0.76rem/1.4 var(--mono); border-bottom: 1px solid var(--line); background: var(--bg); }
.artifact pre + .file { border-top: 1px solid var(--line); }
.artifact pre { margin: 0; border: 0; border-radius: 0; background: transparent; padding: 14px; }
.artifact pre code { font-size: 0.78rem; }
.dim { color: var(--muted); }

.band { padding: 64px 0; border-bottom: 1px solid var(--line); }
.band.last { border-bottom: 0; }
.band h2 { font-size: clamp(1.4rem, 2.6vw, 1.75rem); line-height: 1.2; margin: 0 0 12px; }
.band p { color: var(--muted); margin: 0 0 12px; }
.band p a { color: var(--fg); }
.cols { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px; }
.cols h2 { font-size: 1.2rem; }
.split { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 56px; align-items: start; }
.split.reverse .split-copy { order: 2; }
.split-copy { max-width: 46ch; }

.transcript { border: 1px solid var(--line); border-radius: 10px; padding: 20px; font-size: 0.93rem; background: var(--bg); }
.transcript p { margin: 0 0 12px; color: var(--fg); }
.transcript .you { display: inline-block; background: var(--soft); border-radius: 8px; padding: 8px 12px; }
.transcript .tool { font: 0.76rem/1.5 var(--mono); color: var(--muted); border-left: 2px solid var(--line); padding-left: 10px; }
.transcript .tool code { background: none; border: 0; padding: 0; }
.transcript .answer table, .mask table { margin: 4px 0 12px; }
.transcript .answer p:last-child { margin: 0; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.mask { border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.mask table { margin: 0; }
.mask td code { background: none; border: 0; padding: 0; }

.spec { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 48px; margin: 20px 0 0; }
.spec > div { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 16px; padding: 14px 0; border-top: 1px solid var(--line); }
.spec dt { font-weight: 600; }
.spec dd { margin: 0; color: var(--muted); }
.spec dd a { color: var(--fg); }

.closing { display: flex; align-items: flex-end; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.closing > div { max-width: 52ch; }
.closing-links { display: flex; gap: 10px; margin: 0; }

/* Code blocks */
pre { position: relative; background: var(--code); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; overflow-x: auto; line-height: 1.55; margin: 0 0 20px; tab-size: 2; }
pre code { font-size: 0.82rem; }
pre .copy { position: absolute; top: 8px; right: 8px; opacity: 0; transition: opacity 0.15s; }
pre:hover .copy, pre .copy:focus-visible, pre .copy.done { opacity: 1; }
@media (hover: none) { pre .copy { opacity: 1; } }
:not(pre) > code { background: var(--code); border: 1px solid var(--line); border-radius: 5px; padding: 0.1em 0.35em; overflow-wrap: anywhere; }
.prompt code, .snippet code { background: none; border: 0; padding: 0; }
.band p code, .spec dd code { white-space: nowrap; overflow-wrap: normal; }

/* Pricing */
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin: 8px 0 24px; text-align: left; }
.plan { display: flex; flex-direction: column; }
.plan h2 { margin: 0 0 8px; font-size: 1.15rem; }
.plan .price { margin: 0 0 4px; color: var(--muted); }
.plan .price strong { font-size: 2.2rem; color: var(--fg); letter-spacing: -0.03em; }
.plan .ticks { flex: 1; }
.plan .btn { margin-top: 8px; }
.featured { border-color: var(--fg); }
.ticks { list-style: none; padding: 0; margin: 16px 0; font-size: 0.93rem; }
.ticks li { padding-left: 22px; position: relative; margin: 0 0 8px; }
.ticks li::before { content: ""; position: absolute; left: 2px; top: 0.5em; width: 10px; height: 5px; border-left: 2px solid var(--fg); border-bottom: 2px solid var(--fg); transform: rotate(-45deg); }
.pricing-prose { padding-top: 48px; padding-bottom: 72px; }

/* Docs */
.docs { display: grid; grid-template-columns: 220px minmax(0, 1fr) 200px; gap: 48px; padding-top: 32px; padding-bottom: 72px; }
.sidebar, .toc { position: sticky; top: 84px; align-self: start; max-height: calc(100vh - 100px); overflow-y: auto; font-size: 0.9rem; }
.sidebar h2, .toc h2, .mobile-nav h2 { font: 600 0.72rem/1 var(--mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin: 20px 0 8px; }
.sidebar h2:first-child, .toc h2 { margin-top: 0; }
.sidebar ul, .toc ul, .mobile-nav ul { list-style: none; padding: 0; margin: 0; }
.sidebar a, .mobile-nav a { display: block; padding: 5px 10px; margin-left: -10px; border-radius: 7px; color: var(--fg); text-decoration: none; }
.sidebar a:hover, .mobile-nav a:hover { background: var(--soft); }
.sidebar a[aria-current="page"], .mobile-nav a[aria-current="page"] { background: var(--soft); font-weight: 600; }
.toc a { display: block; padding: 3px 0; color: var(--muted); text-decoration: none; }
.toc a:hover { color: var(--fg); }
.mobile-nav { display: none; }
.md-link { float: right; margin: 6px 0 0 16px; font-size: 0.85rem; }
.pricing-prose .md-link { float: none; }

.prose { min-width: 0; }
.prose h1 { font-size: clamp(1.8rem, 4vw, 2.4rem); margin: 0 0 20px; letter-spacing: -0.025em; }
.prose h2 { font-size: 1.45rem; margin: 44px 0 14px; padding-top: 8px; }
.prose h3 { font-size: 1.12rem; margin: 30px 0 10px; }
.prose h2, .prose h3, .prose h4 { position: relative; }
.prose .anchor { position: absolute; left: -1.1em; padding-right: 0.3em; color: var(--muted); text-decoration: none; opacity: 0; font-weight: 400; }
.prose :is(h2, h3, h4):hover .anchor { opacity: 1; }
.prose p, .prose ul, .prose ol, .prose blockquote { margin: 0 0 16px; }
.prose ul, .prose ol { padding-left: 1.4em; }
.prose li { margin: 4px 0; }
.prose li > ul, .prose li > ol, .prose li > p { margin: 4px 0; }
.prose blockquote { border-left: 3px solid var(--line); padding: 2px 16px; color: var(--muted); }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 32px 0; }
.table { overflow-x: auto; margin: 0 0 20px; border: 1px solid var(--line); border-radius: var(--radius); }
table { border-collapse: collapse; width: 100%; font-size: 0.9rem; }
th, td { text-align: left; vertical-align: top; padding: 9px 12px; border-bottom: 1px solid var(--line); }
th { background: var(--soft); font-weight: 600; white-space: nowrap; }
tbody tr:last-child td { border-bottom: 0; }
td code { white-space: nowrap; }
.align-right { text-align: right; }
.align-center { text-align: center; }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 56px; padding-top: 24px; border-top: 1px solid var(--line); }
.pager a { display: block; padding: 14px 16px; border: 1px solid var(--line); border-radius: var(--radius); text-decoration: none; color: var(--fg); font-weight: 600; }
.pager a:hover { border-color: var(--fg); }
.pager span { display: block; font: 400 0.8rem var(--sans); color: var(--muted); margin-bottom: 2px; }
.pager .next { text-align: right; grid-column: 2; }

/* Footer */
.foot { padding: 48px 0 64px; font-size: 0.9rem; }
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; }
.foot h2 { font: 600 0.72rem/1 var(--mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin: 6px 0 12px; }
.foot nav a { display: block; color: var(--fg); text-decoration: none; padding: 3px 0; }
.foot nav a:hover { text-decoration: underline; }
.foot p { margin: 10px 0 0; }

/* Responsive */
@media (max-width: 1180px) {
  .docs { grid-template-columns: 220px minmax(0, 1fr); }
  .toc { display: none; }
}
@media (max-width: 900px) {
  .intro-grid, .split, .plans { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .split.reverse .split-copy { order: 0; }
  .cols { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .spec { grid-template-columns: minmax(0, 1fr); }
  .docs { grid-template-columns: minmax(0, 1fr); gap: 0; padding-top: 16px; }
  .sidebar { display: none; }
  .mobile-nav { display: block; border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 24px; background: var(--soft); }
  .mobile-nav summary { cursor: pointer; padding: 12px 14px; font-weight: 600; list-style-position: inside; }
  .mobile-nav nav { padding: 0 14px 14px; }
  .mobile-nav h2 { margin-top: 16px; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .foot-grid > div:first-child { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  .hero, .intro { padding: 40px 0 36px; }
  .signup { flex-direction: column; }
  .snippet { flex-direction: column; }
  .snippet .copy { align-self: flex-end; }
  .card { padding: 18px; }
  .band { padding: 44px 0; }
  .spec > div { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  .mask td code { white-space: normal; }
  .mask th, .mask td { padding-left: 10px; padding-right: 10px; }
  .md-link { float: none; margin: 0 0 12px; }
  .pager { grid-template-columns: 1fr; }
  .pager .next { grid-column: 1; }
  .prose .anchor { display: none; }
  .links { gap: 0; }
  .links a { padding: 6px 8px; }
}
@media (max-width: 420px) {
  .links .login { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; scroll-behavior: auto !important; }
}