@charset "UTF-8";

:root {
    color-scheme: light;
    --page: #f5f7fa;
    --surface: #fff;
    --soft: #edf2f7;
    --ink: #182c42;
    --muted: #52657a;
    --line: #cbd5df;
    --accent: #006caa;
    --accent-soft: #e3f2fc;
    --radius: 8px;
    --shadow: 0 12px 30px #17334d0c;
    --font: "Segoe UI", system-ui, sans-serif;
    --mono: "Cascadia Code", Consolas, monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body { margin: 0; background: var(--page); color: var(--ink); font-family: var(--font); font-size: 15px; line-height: 1.6; }
[hidden] { display: none !important; }
a { color: var(--accent); text-underline-offset: 4px; }
a:hover { text-decoration-thickness: 2px; }
button, input { font: inherit; }
button { cursor: pointer; }
button, .button { border: 1px solid var(--line); border-radius: 4px; padding: 8px 18px; background: var(--surface); color: var(--ink); }
button:hover, .button:hover { border-color: var(--accent); background: var(--accent-soft); }
button:focus-visible, a:focus-visible, pre:focus-visible, input:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
.primary, .button.primary { color: var(--surface); background: var(--accent); border-color: var(--accent); }
.primary:hover, .button.primary:hover { filter: brightness(.9); }
.sr-only, .skip-link:not(:focus) { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.skip-link:focus { display: block; padding: 12px; background: var(--surface); }
.site-header { max-width: 1200px; margin: auto; padding: 16px 32px; display: flex; align-items: center; gap: 32px; border-bottom: 1px solid var(--line); }
.brand { display: flex; flex-shrink: 0; }
.brand img { width: 320px; height: 128px; object-fit: contain; border-radius: 4px; }
.site-header nav { display: flex; gap: 26px; margin-left: auto; }
.site-header nav a { color: var(--muted); font-size: 14px; text-decoration: none; font-weight: 600; }
.site-header nav a:hover { color: var(--accent); }
.appearance { display: flex; padding: 3px; margin: 0; border: 1px solid var(--line); background: var(--soft); border-radius: 6px; }
.appearance label { cursor: pointer; }
.appearance input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.appearance span { display: block; padding: 4px 12px; font-family: var(--mono); font-size: 12px; border: 1px solid transparent; border-radius: 3px; }
.appearance input:checked + span { background: var(--surface); border-color: var(--line); color: var(--accent); font-weight: 700; }
.appearance input:focus-visible + span { outline: 3px solid var(--accent); outline-offset: 3px; }
main { max-width: 1200px; margin: auto; padding: 0 32px; }
.hero { padding: 64px 0 48px; }
.eyebrow { color: var(--accent); text-transform: uppercase; letter-spacing: .13em; font-size: 11px; font-weight: 700; margin: 0 0 12px; }
h1 { max-width: 1060px; font-size: clamp(32px, 4.1vw, 52px); line-height: 1.16; font-weight: 650; letter-spacing: -.04em; margin: 0 0 24px; white-space: pre-line; }
.intro { max-width: 800px; color: var(--muted); font-size: 17px; line-height: 1.75; margin-bottom: 26px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.button { display: inline-flex; align-items: center; justify-content: center; text-decoration: none; font-size: 14px; font-weight: 600; padding: 10px 20px; }
.section { padding: 24px 0 40px; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 32px; margin-bottom: 24px; }
.section-heading h2 { margin: 0; font-weight: 600; font-size: 28px; letter-spacing: -.025em; line-height: 1.3; }
.section-heading .eyebrow { margin-bottom: 8px; }
.section-heading > p { max-width: 395px; color: var(--muted); font-size: 14px; margin: 0; }
.workbench, .platform-workbench { border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow); overflow: hidden; }
.tab-list { display: flex; }
.tab-list button { border: 0; border-radius: 0; background: transparent; text-align: left; }
.tab-list button[aria-selected="true"] { color: var(--accent); background: var(--surface); font-weight: 600; }
.tab-list button:focus-visible { outline-offset: -4px; position: relative; z-index: 1; }
.example-tabs { border-bottom: 1px solid var(--line); background: var(--soft); padding-left: 8px; }
.example-tabs button { color: var(--muted); padding: 16px 24px; font-family: var(--mono); font-size: 11px; border-bottom: 3px solid transparent; }
.example-tabs button span { margin-left: 12px; font: 600 14px var(--font); }
.example-tabs button[aria-selected="true"] { border-bottom-color: var(--accent); }
.example-grid { display: grid; grid-template-columns: 1.15fr 1fr; }
.source-pane { min-width: 0; border-right: 1px solid var(--line); }
.pane-label { display: flex; justify-content: space-between; gap: 12px; padding: 15px 22px; font: 11px var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.source-options { flex-direction: column; align-items: flex-start; gap: 8px; min-width: 0; margin: 0; border: 0; }
.source-options label { position: relative; cursor: pointer; }
.source-options span { display: inline-flex; align-items: center; gap: 8px; }
.source-options span::before { content: "\25B6"; visibility: hidden; font-size: 9px; }
.source-options input:checked + span { color: var(--accent); }
.source-options input:checked + span::before { visibility: visible; }
.source-options input:focus-visible + span { outline: 3px solid var(--accent); outline-offset: 4px; }
pre { font: 12px/1.8 var(--mono); margin: 0; padding: 8px 22px 20px; overflow: auto; tab-size: 2; white-space: pre; }
code { font-family: var(--mono); }
.source-link { display: inline-block; margin: 0 22px 20px; font-size: 12px; }
.preview-pane { display: flex; flex-direction: column; min-width: 0; background: var(--page); }
.preview-stage { display: grid; place-items: start center; flex: 1; padding: 26px; min-height: 305px; }
.sample-snapshot { display: block; max-width: 100%; height: auto; }
.platform-tabs { background: var(--soft); border-bottom: 1px solid var(--line); }
.platform-tabs button { flex: 1; display: flex; align-items: center; gap: 13px; padding: 19px 24px; border-right: 1px solid var(--line); border-bottom: 3px solid transparent; line-height: 1.4; }
.platform-tabs button:last-child { border-right: 0; }
.platform-tabs button[aria-selected="true"] { border-bottom-color: var(--accent); }
.platform-icon { display: none; font: 24px var(--mono); }
.platform-graphic { display: flex; flex-shrink: 0; width: 32px; height: 32px; }
.platform-graphic img { display: block; width: 32px; height: 32px; object-fit: contain; }
.platform-tabs small { display: block; margin-top: 4px; font-size: 11px; font-weight: 400; color: var(--muted); }
.platform-info { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 18px 24px 10px; font-size: 13px; }
.platform-info p { color: var(--muted); margin: 0; max-width: 820px; }
.platform-info a { white-space: nowrap; }
.mode-tabs { padding: 4px 24px 12px; gap: 4px; }
.mode-tabs button { padding: 4px 17px; border: 1px solid var(--line); border-radius: 4px; font: 12px var(--mono); }
.mode-tabs button[aria-selected="true"] { background: var(--accent-soft); border-color: var(--accent); }
.theme-gallery { display: grid; grid-template-columns: 145px minmax(0, 1fr); border-top: 1px solid var(--line); }
.theme-tabs { flex-direction: column; background: var(--page); border-right: 1px solid var(--line); padding: 14px 8px; gap: 4px; }
.theme-tabs button { display: flex; align-items: center; gap: 10px; padding: 10px; font-size: 12px; border: 1px solid transparent; border-radius: 4px; }
.theme-tabs button[aria-selected="true"] { background: var(--accent-soft); border-color: var(--line); }
.swatch { display: block; width: 9px; height: 9px; border-radius: 50%; border: 1px solid #0002; }
.default { background: #626574; }.aurora, .purple { background: #a18bed; }.ember, .orange { background: #da9253; }.lagoon, .emerald { background: #54a7a0; }.moonstone { background: #b4c8dc; }.rosewood, .pink { background: #d87894; }.skyblue { background: #639ee2; }.grass { background: #82bb72; }
.screenshot-panels { min-width: 0; background: var(--soft); }
.screenshot { margin: 0; padding: 22px; }
.screenshot a { display: flex; align-items: center; justify-content: center; height: 440px; }
.screenshot img { display: block; width: 100%; height: 440px; object-fit: contain; }
.quick-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.quick-link { display: flex; gap: 13px; align-items: start; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); padding: 20px; color: var(--ink); text-decoration: none; }
.quick-link:hover { border-color: var(--accent); background: var(--accent-soft); }
.link-icon { color: var(--accent); font: 24px var(--mono); line-height: 1.4; }
.quick-link strong { display: block; font-size: 14px; font-weight: 600; margin-bottom: 3px; }
.quick-link small { display: block; color: var(--muted); font-size: 12px; line-height: 1.6; }
.agent-guide { display: flex; gap: 40px; align-items: center; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 24px 0; }
.agent-guide + .agent-guide { border-top: 0; }
.agent-guide p { flex: 1; margin: 0; color: var(--muted); font-size: 15px; max-width: 780px; }
.agent-guide .button { white-space: nowrap; }
.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 26px 20px; }
.feature { margin: 0; min-width: 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); padding: 12px 22px 20px; }
.feature legend { padding: 0 8px; margin-left: -8px; font-weight: 600; font-size: 15px; }
/* Raise the GUI border around the title; the fieldset continues below its midpoint. */
body:has(#style-gui:checked) .feature legend { position: relative; isolation: isolate; padding: 0 12px; margin-left: -12px; }
body:has(#style-gui:checked) .feature legend::before { content: ""; position: absolute; inset: -6px 0 50%; z-index: -1; background: var(--surface); border: 1px solid var(--line); border-bottom: 0; border-radius: var(--radius) var(--radius) 0 0; }
.feature-number { color: var(--accent); font: 11px var(--mono); margin-right: 8px; }
.feature p { color: var(--muted); font-size: 13px; margin: 0 0 14px; }
.feature a { font-size: 12px; }
.feature pre { padding: 12px; margin-bottom: 14px; background: var(--soft); border: 1px solid var(--line); font-size: 11px; }
footer { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; color: var(--muted); font-size: 12px; border-top: 1px solid var(--line); padding: 24px 0 32px; margin-top: 28px; }
footer div { display: flex; gap: 18px; }

/* The same content and controls become a terminal UI through CSS alone. */
:root:has(#style-tui:checked) { color-scheme: dark; --page: #101c31; --surface: #13223a; --soft: #182b47; --ink: #deecfc; --muted: #a3b9d3; --line: #526c8c; --accent: #88dcf6; --accent-soft: #23435e; --radius: 0px; --shadow: none; --font: var(--mono); }
body:has(#style-tui:checked) { font-size: 14px; }
body:has(#style-tui:checked) :is(button, input, .button, .appearance, .appearance span, .swatch) { border-radius: 0; box-shadow: none; }
body:has(#style-tui:checked) .brand img { filter: grayscale(1); }
body:has(#style-tui:checked) h1 { letter-spacing: -.055em; font-size: clamp(32px, 3.9vw, 50px); }
body:has(#style-tui:checked) .platform-graphic { display: none; }
body:has(#style-tui:checked) .platform-icon { display: inline; }
body:has(#style-tui:checked) .feature legend::before { content: "[ "; color: var(--accent); }
body:has(#style-tui:checked) .feature legend::after { content: " ]"; color: var(--accent); }
body:has(#style-tui:checked) .section-heading h2 { font-size: 24px; }

@media (max-width: 950px) {
    .hero { padding-top: 45px; }.site-header { flex-wrap: wrap; gap: 20px; }.site-header nav { order: 3; width: 100%; flex-wrap: wrap; gap: 8px 16px; }.site-header nav a { white-space: nowrap; }.appearance { margin-left: auto; }
    .quick-links { grid-template-columns: repeat(2, 1fr); }.feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .platform-tabs button { padding: 16px; gap: 9px; }.platform-icon { font-size: 19px; }.preview-stage { padding: 20px; }
    .screenshot a, .screenshot img { height: 340px; }
}
@media (max-width: 650px) {
    .site-header { padding: 10px 20px 16px; gap: 10px; }
    main { padding: 0 20px; }.hero { padding: 38px 0 32px; }
    h1 { font-size: 34px; }.intro { font-size: 16px; }.hero-actions .button { padding: 10px 16px; }
    .section { padding-bottom: 24px; }.section-heading { display: block; }.section-heading > p { margin-top: 12px; }.section-heading h2 { font-size: 26px; }
    .example-grid { grid-template-columns: 1fr; }.source-pane { border-right: 0; border-bottom: 1px solid var(--line); }.example-tabs { flex-wrap: wrap; }.example-tabs button { padding: 14px; }.example-tabs button span { font-size: 13px; margin-left: 8px; }
    pre { font-size: 11px; padding-right: 16px; padding-left: 16px; }.preview-stage { min-height: 270px; }.platform-tabs { flex-wrap: wrap; }.platform-tabs button { flex-basis: 50%; border-bottom: 1px solid var(--line); }.platform-tabs button[aria-selected="true"] { box-shadow: inset 0 -3px var(--accent); }.platform-tabs button:nth-child(2) { border-right: 0; }
    .platform-info { display: block; padding: 16px; }.platform-info a { display: inline-block; margin-top: 8px; }.mode-tabs { padding-left: 16px; }
    .theme-gallery { grid-template-columns: 108px minmax(0, 1fr); }.theme-tabs { padding: 8px 4px; }.theme-tabs button { font-size: 10px; gap: 6px; padding: 9px 6px; }.swatch { width: 7px; height: 7px; }
    .screenshot { padding: 10px; }.screenshot a, .screenshot img { height: 240px; }
    .quick-links, .feature-grid { grid-template-columns: 1fr; }.quick-links { gap: 10px; }.quick-link { padding: 16px 20px; }.feature-grid { gap: 20px; }
    .agent-guide { display: block; }.agent-guide .button { margin-top: 20px; }
}
@media (max-width: 359px) {
    .site-header { padding-right: 0; padding-left: 0; }.site-header nav { padding: 0 20px; }.appearance { margin-right: 20px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }