/* ============================================================
   Claude Agents — layout and components

   Every value here resolves to a token in tokens.css. If you find
   a raw colour or a raw radius below, it is a defect.
   ============================================================ */

/* ---- Reset -------------------------------------------------- */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  tab-size: 4;
  overflow-x: hidden;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-text);
  font-size: 1rem;
  line-height: 1.5;
  letter-spacing: var(--tracking-sm);
  background-color: hsl(var(--background));
  color: hsl(var(--foreground));
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 550;
  letter-spacing: var(--tracking-display);
  color: hsl(var(--primary));
  line-height: 1.15;
}

p {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
}

code,
kbd,
samp,
pre {
  font-family: var(--font-mono);
  font-size: 1em;
}

button {
  font: inherit;
  letter-spacing: inherit;
  color: inherit;
  margin: 0;
  cursor: pointer;
}

svg {
  display: block;
}

::selection {
  background: hsl(var(--foreground));
  color: hsl(var(--background));
}

:focus-visible {
  outline: 2px solid hsl(var(--accent));
  outline-offset: 2px;
  border-radius: var(--radius-2xs);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

/* ---- Shell -------------------------------------------------- */

.shell {
  width: 100%;
  max-width: var(--site-content-width);
  margin-inline: auto;
  padding-inline: max(var(--site-frame-inset), 1.25rem);
}

.section {
  padding-block: 5rem;
  border-top: 1px solid var(--color-theme-border-02);
}

.section__head {
  max-width: 34rem;
  margin-bottom: 2.5rem;
}

.section__title {
  font-size: clamp(1.75rem, 1.2rem + 2vw, 2.5rem);
}

.section__lede {
  margin-top: 0.75rem;
  color: hsl(var(--secondary));
  font-size: 1.0625rem;
}

@media (min-width: 768px) {
  .section {
    padding-block: 7rem;
  }
}

/* ---- Mono eyebrow ------------------------------------------- */

.mono-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: var(--tracking-mono-tag);
  color: hsl(var(--secondary));
}

/* ---- Header ------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--site-header-h);
  background: var(--site-header-bg);
  -webkit-backdrop-filter: blur(var(--site-header-blur));
  backdrop-filter: blur(var(--site-header-blur));
  border-bottom: 1px solid var(--color-theme-border-02);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  height: 100%;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-display);
  font-weight: 550;
  letter-spacing: var(--tracking-display);
  color: hsl(var(--primary));
}

.wordmark__dot {
  width: 0.6rem;
  height: 0.6rem;
  border-radius: var(--radius-pill);
  background: hsl(var(--accent));
}

.site-nav {
  display: none;
  align-items: center;
  gap: 1.75rem;
}

.site-nav a {
  font-size: 0.875rem;
  color: hsl(var(--secondary));
  transition: color var(--duration) ease;
}

.site-nav a:hover {
  color: hsl(var(--foreground));
}

@media (min-width: 768px) {
  .site-nav {
    display: flex;
  }
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  padding: 0;
  border: 1px solid var(--color-theme-border-02);
  border-radius: var(--radius-pill);
  background: transparent;
  color: hsl(var(--secondary));
  transition: color var(--duration) ease, background-color var(--duration) ease;
}

.theme-toggle:hover {
  color: hsl(var(--foreground));
  background: var(--color-theme-card-hex);
}

.theme-toggle svg {
  width: 1rem;
  height: 1rem;
}

.theme-toggle .icon-moon {
  display: none;
}

html.dark .theme-toggle .icon-moon {
  display: block;
}

html.dark .theme-toggle .icon-sun {
  display: none;
}

/* ---- Buttons ------------------------------------------------ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.15rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 0.9375rem;
  font-weight: 550;
  transition: background-color var(--duration) ease,
    border-color var(--duration) ease, color var(--duration) ease;
}

.btn--primary {
  background: hsl(var(--accent));
  color: hsl(var(--color-jet));
}

.btn--primary:hover {
  background: hsl(var(--accent-hover));
}

.btn--ghost {
  border-color: var(--color-theme-border-02);
  color: hsl(var(--foreground));
}

.btn--ghost:hover {
  background: var(--color-theme-card-hex);
}

.btn code {
  font-size: 0.875rem;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9375rem;
  color: hsl(var(--secondary));
  transition: color var(--duration) ease, gap var(--duration) var(--ease-out-spring);
}

.link-arrow:hover {
  color: hsl(var(--foreground));
  gap: 0.65rem;
}

/* ---- Hero --------------------------------------------------- */

.hero {
  padding-block: 4rem 5rem;
  text-align: center;
}

.hero__headline {
  margin-top: 1.25rem;
  margin-inline: auto;
  max-width: 18ch;
  font-size: clamp(2.5rem, 1.4rem + 4.4vw, 4.25rem);
  letter-spacing: var(--tracking-headline);
  line-height: 1.05;
}

.hero__lede {
  margin-top: 1.5rem;
  margin-inline: auto;
  max-width: 46ch;
  font-size: 1.1875rem;
  line-height: 1.55;
  color: hsl(var(--secondary));
  text-wrap: pretty;
}

.hero__rule {
  height: 2px;
  width: 4rem;
  margin: 2.25rem auto 0;
  border-radius: var(--radius-pill);
  background: hsl(var(--accent));
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 2.25rem;
}

.hero__note {
  margin-top: 1.5rem;
  font-size: 0.8125rem;
  color: hsl(var(--secondary));
}

@media (min-width: 768px) {
  .hero {
    padding-block: 5.5rem 6rem;
  }
}

@media (min-width: 900px) {
  .hero {
    padding-bottom: 9rem;
  }
}

/* ============================================================
   Product mock

   A macOS window and a phone, drawn in CSS. No image assets.
   Everything scales from --mock-size so the whole thing can be
   resized from one place.
   ============================================================ */

.hero__stage {
  position: relative;
  margin: 4rem auto 0;
  max-width: 60rem;
}

.mock-caption {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}

/* ---- Shared pieces ------------------------------------------ */

.avatar {
  position: relative;
  flex: none;
  border-radius: var(--radius-pill);
  background-image: radial-gradient(
    circle at 32% 26%,
    hsl(var(--color-white) / 0.55),
    hsl(var(--color-white) / 0) 46%
  );
  background-color: var(--agent-5);
}

.avatar--1 { background-color: var(--agent-1); }
.avatar--2 { background-color: var(--agent-2); }
.avatar--3 { background-color: var(--agent-3); }
.avatar--4 { background-color: var(--agent-4); }
.avatar--5 { background-color: var(--agent-5); }
.avatar--6 { background-color: var(--agent-6); }

.traffic {
  display: flex;
  gap: 0.4rem;
}

.traffic i {
  width: 0.6rem;
  height: 0.6rem;
  border-radius: var(--radius-pill);
  box-shadow: inset 0 0 0 0.5px hsl(var(--color-jet) / 0.2);
}

.traffic i:nth-child(1) { background: var(--terminal-traffic-red); }
.traffic i:nth-child(2) { background: var(--terminal-traffic-yellow); }
.traffic i:nth-child(3) { background: var(--terminal-traffic-green); }

.bubble {
  max-width: 78%;
  padding: 0.6rem 0.85rem;
  border-radius: var(--radius);
  background: var(--color-theme-card-02-hex);
  color: hsl(var(--foreground));
  line-height: 1.45;
}

.bubble--me {
  margin-left: auto;
  background: hsl(var(--primary));
  color: hsl(var(--background));
}

.bubble--tight {
  max-width: max-content;
}

.thread-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  color: hsl(var(--secondary));
  font-size: 0.8125rem;
}

/* ---- Desktop window ----------------------------------------- */

.app-mock {
  display: none;
  grid-template-columns: 15rem minmax(0, 1fr);
  height: 30rem;
  border-radius: var(--radius-media);
  background: hsl(var(--background));
  box-shadow: 0 14px 40px hsl(var(--color-jet) / 0.16),
    0 0 0 0.5px hsl(var(--color-jet) / 0.05), var(--shadow-outline-theme);
  overflow: hidden;
  font-size: 0.8125rem;
}

@media (min-width: 900px) {
  .app-mock {
    display: grid;
  }
}

/* Sidebar */

.app-side {
  display: flex;
  flex-direction: column;
  min-height: 0;
  padding: 0.9rem;
  gap: 0.75rem;
  border-right: 1px solid var(--color-theme-border-02);
  background: var(--color-theme-card-hex);
}

.app-side__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-inline: 0.15rem;
}

.app-side__new {
  color: hsl(var(--secondary));
  font-size: 1.1rem;
  line-height: 1;
}

.app-search {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.7rem;
  border-radius: var(--radius);
  background: var(--color-theme-card-02-hex);
  color: hsl(var(--secondary));
}

.app-search svg {
  width: 0.85rem;
  height: 0.85rem;
}

.app-list {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-height: 0;
  overflow: hidden;
}

.app-row {
  display: grid;
  grid-template-columns: 1.9rem minmax(0, 1fr);
  gap: 0.6rem;
  padding: 0.5rem;
  border-radius: var(--radius);
}

.app-row[data-active] {
  background: var(--color-theme-card-02-hex);
}

.app-row .avatar {
  width: 1.9rem;
  height: 1.9rem;
}

.app-row__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
}

.app-row__name {
  font-weight: 550;
  color: hsl(var(--primary));
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.app-row__time,
.app-row__preview {
  color: hsl(var(--secondary));
  font-size: 0.75rem;
}

.app-row__time {
  flex: none;
}

.app-row__preview {
  margin-top: 0.1rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.app-side__user {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-top: auto;
  padding: 0.4rem 0.15rem 0;
  color: hsl(var(--secondary));
}

.app-you {
  display: grid;
  place-items: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: var(--radius-pill);
  background: var(--color-theme-card-02-hex);
  box-shadow: var(--shadow-outline-theme);
  font-size: 0.6875rem;
  letter-spacing: 0.02em;
}

/* Conversation pane */

.app-main {
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.app-main__top {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.9rem 1.1rem;
  border-bottom: 1px solid var(--color-theme-border-02);
}

.app-main__top .avatar {
  width: 1.35rem;
  height: 1.35rem;
}

.app-main__title {
  font-weight: 550;
  color: hsl(var(--primary));
  font-size: 0.9375rem;
}

.app-main__icon {
  margin-left: auto;
  color: hsl(var(--secondary));
}

.app-main__icon svg {
  width: 1rem;
  height: 1rem;
}

.app-thread {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  flex: 1;
  min-height: 0;
  padding: 1.1rem;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(hsl(var(--color-jet) / 0) 0, hsl(var(--color-jet)) 3.5rem);
  mask-image: linear-gradient(hsl(var(--color-jet) / 0) 0, hsl(var(--color-jet)) 3.5rem);
}

.checklist {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0.85rem 1rem;
  border-radius: var(--radius);
  background: var(--color-theme-card-02-hex);
}

.checklist li {
  display: flex;
  gap: 0.5rem;
  align-items: baseline;
}

.checklist__tick {
  color: hsl(var(--secondary));
}

.checklist b {
  font-weight: 550;
  color: hsl(var(--primary));
}

.checklist span {
  color: hsl(var(--secondary));
}

.app-composer {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin: 0 1.1rem 1.1rem;
  padding: 0.55rem 0.55rem 0.55rem 0.85rem;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-outline-theme);
  color: hsl(var(--secondary));
}

.app-composer__mic {
  display: grid;
  place-items: center;
  width: 1.85rem;
  height: 1.85rem;
  margin-left: auto;
  border-radius: var(--radius-pill);
  background: hsl(var(--primary));
  color: hsl(var(--background));
}

.app-composer__mic svg {
  width: 0.85rem;
  height: 0.85rem;
}

/* ---- Phone -------------------------------------------------- */

.phone-mock {
  position: relative;
  width: 17.5rem;
  margin-inline: auto;
  padding: 0.5rem;
  border-radius: 2.75rem;
  background: hsl(var(--color-jet));
  box-shadow: 0 14px 40px hsl(var(--color-jet) / 0.22),
    inset 0 0 0 1px hsl(var(--color-white) / 0.14);
  font-size: 0.8125rem;
}

@media (min-width: 900px) {
  .phone-mock {
    position: absolute;
    right: -1rem;
    bottom: -3.5rem;
    width: 15.5rem;
    margin: 0;
    z-index: 2;
  }
}

/* Side buttons. Same colour as the frame, so they only read where
   they protrude past its silhouette. */

.phone-btn {
  position: absolute;
  width: 0.2rem;
  background: inherit;
}

.phone-btn--mute {
  left: -0.15rem;
  top: 15%;
  height: 1.1rem;
  border-radius: 2px 0 0 2px;
}

.phone-btn--vol-up {
  left: -0.15rem;
  top: 24%;
  height: 2rem;
  border-radius: 2px 0 0 2px;
}

.phone-btn--vol-down {
  left: -0.15rem;
  top: 38%;
  height: 2rem;
  border-radius: 2px 0 0 2px;
}

.phone-btn--power {
  right: -0.15rem;
  top: 30%;
  height: 2.75rem;
  border-radius: 0 2px 2px 0;
}

.phone-screen {
  position: relative;
  display: flex;
  flex-direction: column;
  height: 33rem;
  border-radius: 2.3rem;
  background: hsl(var(--background));
  overflow: hidden;
}

@media (min-width: 900px) {
  .phone-screen {
    height: 30rem;
  }
}

.phone-island {
  position: absolute;
  top: 0.6rem;
  left: 50%;
  translate: -50% 0;
  z-index: 3;
  width: 5.5rem;
  height: 1.5rem;
  border-radius: var(--radius-pill);
  background: hsl(var(--color-jet));
}

.phone-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.4rem;
  z-index: 2;
  padding: 2.9rem 0.7rem 0.5rem;
}

.phone-chip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  height: 2rem;
  padding-inline: 0.7rem;
  border-radius: var(--radius-pill);
  background: hsl(var(--background));
  box-shadow: var(--shadow-outline-theme);
  color: hsl(var(--secondary));
}

.phone-chip--title {
  flex: 1;
  min-width: 0;
  font-weight: 550;
  color: hsl(var(--primary));
}

.phone-chip--title .avatar {
  width: 1.15rem;
  height: 1.15rem;
}

.phone-chip svg {
  width: 0.9rem;
  height: 0.9rem;
}

.phone-thread {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  flex: 1;
  min-height: 0;
  margin-top: -1.6rem;
  padding: 0.7rem;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(hsl(var(--color-jet) / 0) 1.6rem, hsl(var(--color-jet)) 4.5rem);
  mask-image: linear-gradient(hsl(var(--color-jet) / 0) 1.6rem, hsl(var(--color-jet)) 4.5rem);
}

.phone-draft {
  padding: 0.7rem;
  border-radius: var(--radius);
  background: var(--color-theme-card-02-hex);
}

.phone-draft__subject {
  padding: 0 0.2rem 0.5rem;
  color: hsl(var(--secondary));
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.phone-draft__card {
  padding: 0.75rem;
  border-radius: var(--radius-xs);
  background: hsl(var(--background));
  line-height: 1.5;
}

.phone-draft__card p + p {
  margin-top: 0.55rem;
}

.phone-draft__figures {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.15rem 0.75rem;
  margin-top: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: hsl(var(--secondary));
}

.phone-draft__figures b {
  font-weight: 400;
  color: hsl(var(--primary));
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.phone-draft__actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.7rem;
}

.pill {
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-pill);
  background: hsl(var(--background));
  box-shadow: var(--shadow-outline-theme);
  font-weight: 550;
  color: hsl(var(--foreground));
}

.pill--solid {
  background: hsl(var(--primary));
  color: hsl(var(--background));
  box-shadow: none;
}

.phone-composer {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 0.7rem 0.9rem;
}

.phone-composer__plus {
  display: grid;
  place-items: center;
  width: 2.1rem;
  height: 2.1rem;
  flex: none;
  border-radius: var(--radius-pill);
  background: var(--color-theme-card-hex);
  color: hsl(var(--secondary));
  font-size: 1.1rem;
}

.phone-composer__field {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
  min-width: 0;
  height: 2.1rem;
  padding-inline: 0.8rem;
  border-radius: var(--radius-pill);
  background: var(--color-theme-card-hex);
  color: hsl(var(--secondary));
}

.phone-composer__field span {
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.phone-composer__field svg {
  width: 0.9rem;
  height: 0.9rem;
  margin-left: auto;
  flex: none;
}

/* ---- Mock, dark mode ---------------------------------------- */

html.dark .app-mock {
  box-shadow: 0 14px 40px hsl(var(--color-jet) / 0.6), var(--shadow-outline-theme);
}

html.dark .phone-mock {
  background: hsl(var(--color-steel));
  box-shadow: 0 14px 40px hsl(var(--color-jet) / 0.6),
    inset 0 0 0 1px hsl(var(--color-white) / 0.1);
}

/* ---- Role chips --------------------------------------------- */

.role-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.role-chip {
  display: inline-flex;
  align-items: center;
  padding: var(--button-padding-sm);
  border-radius: var(--radius-pill);
  box-shadow: inset 0 0 0 1px var(--color-theme-border-02);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: hsl(var(--secondary));
  transition: color var(--duration) ease, background-color var(--duration) ease;
}

.role-chip:hover {
  background: var(--color-theme-card-hex);
  color: hsl(var(--foreground));
}

/* ---- Cards -------------------------------------------------- */

.card {
  padding: 1.75rem;
  border-radius: var(--radius-media);
  background: var(--color-theme-card-hex);
  box-shadow: var(--shadow-outline-theme);
}

.card__title {
  font-size: 1.25rem;
}

.card__body {
  margin-top: 0.75rem;
  color: hsl(var(--secondary));
  text-wrap: pretty;
}

.example {
  margin-top: 2.5rem;
}

.example__foot {
  margin-top: 1.75rem;
}

/* ---- Feature grid ------------------------------------------- */

.feature-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.feature {
  padding: 1.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-outline-theme);
  transition: background-color var(--duration) ease;
}

.feature:hover {
  background: var(--color-theme-card-hex);
}

.feature__title {
  font-size: 1.0625rem;
}

.feature__body {
  margin-top: 0.6rem;
  font-size: 0.9375rem;
  color: hsl(var(--secondary));
  text-wrap: pretty;
}

.feature__body + .feature__body {
  margin-top: 0.75rem;
}

/* ---- Difference list ---------------------------------------- */

.diff-list {
  display: grid;
  gap: 3rem;
}

.diff__index {
  display: block;
  margin-bottom: 0.85rem;
}

.diff__title {
  font-size: clamp(1.375rem, 1.1rem + 1vw, 1.75rem);
}

.diff__body {
  margin-top: 0.9rem;
  max-width: 60ch;
  color: hsl(var(--secondary));
  text-wrap: pretty;
}

.diff__body + .diff__body {
  margin-top: 1rem;
}

@media (min-width: 900px) {
  .diff {
    display: grid;
    grid-template-columns: 6rem minmax(0, 1fr);
    gap: 1.5rem;
  }

  .diff__index {
    margin-bottom: 0;
    padding-top: 0.4rem;
  }
}

/* ---- Split section (heading left, content right) ------------- */

.split {
  display: grid;
  gap: 2.5rem;
}

.split .section__head {
  margin-bottom: 0;
}

@media (min-width: 900px) {
  .split {
    grid-template-columns: minmax(0, 16rem) minmax(0, 1fr);
    gap: 4rem;
  }
}

/* ---- Disclosure rows ----------------------------------------- */

.qa-list {
  border-top: 1px solid var(--color-theme-border-02);
}

.qa-item {
  border-bottom: 1px solid var(--color-theme-border-02);
}

.qa-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding-block: 1.35rem;
  font-size: 1.0625rem;
  color: hsl(var(--primary));
  cursor: pointer;
  list-style: none;
  transition: color var(--duration) ease;
}

.qa-q::-webkit-details-marker {
  display: none;
}

.qa-q:hover .qa-icon {
  color: hsl(var(--foreground));
}

.qa-icon {
  position: relative;
  flex: none;
  width: 0.85rem;
  height: 0.85rem;
  color: hsl(var(--secondary));
  transition: color var(--duration) ease;
}

.qa-icon::before,
.qa-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: currentColor;
  transition: transform var(--duration) var(--ease-out-spring);
}

.qa-icon::after {
  transform: rotate(90deg);
}

.qa-item[open] .qa-icon::before {
  transform: rotate(45deg);
}

.qa-item[open] .qa-icon::after {
  transform: rotate(-45deg);
}

.qa-a {
  max-width: 62ch;
  padding-bottom: 1.6rem;
  color: hsl(var(--secondary));
  text-wrap: pretty;
}

/* ---- Closing ------------------------------------------------ */

.cta {
  padding-block: 5rem 6rem;
  border-top: 1px solid var(--color-theme-border-02);
  text-align: center;
}

.cta__title {
  font-size: clamp(2rem, 1.4rem + 2.4vw, 3rem);
  letter-spacing: var(--tracking-headline);
}

.cta__body {
  margin-top: 1.25rem;
  margin-inline: auto;
  max-width: 46ch;
  color: hsl(var(--secondary));
  text-wrap: pretty;
}

.cta__actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.cta__note {
  margin-top: 1.5rem;
  font-size: 0.8125rem;
  color: hsl(var(--secondary));
}

/* ---- Footer ------------------------------------------------- */

.site-footer {
  padding-block: 2rem 3rem;
  border-top: 1px solid var(--color-theme-border-02);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

/* ---- Inline code -------------------------------------------- */

.agent-name {
  padding: 0.15em 0.4em;
  border-radius: var(--radius-2xs);
  background: var(--color-theme-card-02-hex);
  font-family: var(--font-mono);
  font-size: 0.875em;
}

/* ---- Utility ------------------------------------------------ */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}