/* Signed-out landing. Warm, product-demo page in the shape of a study
   platform: paper canvas, pill controls, embedded UI, measured proof.
   Tokens stay on the screen so the signed-in app is untouched. */

:is(.clerk-sign-in-screen.rd-landing, body.landing-page.rd-site) {
  --rd-bg: #F3F0E8;
  --rd-card: #FFFCF7;
  --rd-field: #F6F1E8;
  --rd-ink: #1B1528;
  --rd-muted: #5C5670;
  --rd-faint: #6E687C;
  --rd-line: rgba(27, 21, 40, 0.1);
  --rd-line-strong: rgba(27, 21, 40, 0.22);
  --rd-shadow: 0 24px 50px -28px rgba(48, 28, 80, 0.32), 0 1px 2px rgba(48, 28, 80, 0.04);
  --rd-violet: #5346D6;
  --rd-violet-solid: #5346D6;
  --rd-violet-wash: #E7E3FB;
  --rd-mint: #0C7A52;
  --rd-mint-wash: #D5F3E4;
  --rd-peach-wash: #FDE3CF;
  --rd-sky-wash: #E2EEFB;
  --rd-cta-bg: #1B1528;
  --rd-cta-fg: #F7F4EE;
  --rd-cta-hover: #322844;
  --landing-maxw: 1120px;
  --landing-bg: var(--rd-bg);
  --landing-surface: var(--rd-card);
  --landing-surface-2: var(--rd-field);
  --landing-text: var(--rd-ink);
  --landing-text-dim: var(--rd-muted);
  --landing-line: var(--rd-line);
  --landing-line-2: var(--rd-line-strong);
  --landing-nav-bg: color-mix(in srgb, var(--rd-bg) 88%, transparent);
  --on-rgb: 27, 21, 40;
  --accent: var(--rd-cta-bg);
  --on-accent: var(--rd-cta-fg);
  background: var(--rd-bg);
  background-image: none;
  color: var(--rd-ink);
}

html[data-theme="dark"] :is(.clerk-sign-in-screen.rd-landing, body.landing-page.rd-site) {
  --rd-bg: #121018;
  --rd-card: #221E2C;
  --rd-field: #2A2533;
  --rd-ink: #F6F2EA;
  --rd-muted: #C9C2D6;
  --rd-faint: #A39CB3;
  --rd-line: rgba(246, 242, 234, 0.12);
  --rd-line-strong: rgba(246, 242, 234, 0.28);
  --rd-shadow: 0 24px 50px -24px rgba(0, 0, 0, 0.7);
  --rd-violet: #C4B8FF;
  --rd-violet-solid: #6A5AE8;
  --rd-violet-wash: #2C2754;
  --rd-mint: #8EE0C4;
  --rd-mint-wash: #17362D;
  --rd-peach-wash: #3C2A1E;
  --rd-sky-wash: #1A2E48;
  --rd-cta-bg: #F6F2EA;
  --rd-cta-fg: #1B1528;
  --rd-cta-hover: #E5DDD2;
  --on-rgb: 246, 242, 234;
}

html[data-auth-landing="true"] {
  --rd-bg: #F3F0E8;
  --rd-ink: #1B1528;
  background: var(--rd-bg);
  color: var(--rd-ink);
}
html[data-theme="dark"][data-auth-landing="true"],
html[data-theme="dark"][data-auth-landing="true"] body {
  --rd-bg: #121018;
  --rd-ink: #F6F2EA;
  background: var(--rd-bg);
  color: var(--rd-ink);
}
html[data-auth-landing="true"] body {
  background: var(--rd-bg);
  color: var(--rd-ink);
}

:is(.rd-landing, body.landing-page.rd-site) .landing-nav {
  background: color-mix(in srgb, var(--rd-bg) 86%, transparent);
}
:is(.rd-landing, body.landing-page.rd-site) .landing-nav.scrolled {
  border-bottom-color: var(--rd-line);
  box-shadow: var(--shadow-1);
}
:is(.rd-landing, body.landing-page.rd-site) .landing-brand .brand-logo { height: 26px; }
:is(.rd-landing, body.landing-page.rd-site) .landing-nav-links a {
  color: var(--rd-muted);
  font-weight: 600;
  border-radius: 999px;
}
:is(.rd-landing, body.landing-page.rd-site) .landing-nav-links a:hover {
  color: var(--rd-ink);
  background: color-mix(in srgb, var(--rd-card) 80%, transparent);
}
:is(.rd-landing, body.landing-page.rd-site) .landing-mobile-menu {
  background: var(--rd-bg);
  border-bottom-color: var(--rd-line);
}
:is(.rd-landing, body.landing-page.rd-site) .landing-mobile-menu a {
  color: var(--rd-ink);
  border-bottom-color: var(--rd-line);
  font-weight: 600;
}

.rd-topbar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 10px 16px;
  background: var(--rd-cta-bg);
  color: var(--rd-cta-fg);
  font-size: 14px;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  line-height: 1.4;
}
.rd-topbar:hover { background: var(--rd-cta-hover); }
.rd-topbar-chip {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border: 1px solid color-mix(in srgb, var(--rd-cta-fg) 45%, transparent);
  border-radius: 999px;
  padding: 2px 7px;
}
.rd-topbar-go { text-decoration: underline; text-underline-offset: 2px; }

.rd-body { padding-bottom: 12px; }

.rd-hero,
.rd-stage,
.rd-stats,
.rd-bento,
.rd-faq,
.rd-close,
.rd-split {
  width: min(1120px, calc(100% - 40px));
  margin-inline: auto;
}

.rd-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 72px;
  align-items: start;
  padding: 80px 0 72px;
}
.rd-hero-copy {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding-top: 8px;
}
.rd-kicker {
  margin: 0 0 12px;
  font-size: 14px;
  font-weight: 700;
  color: var(--rd-violet);
}
.rd-hero h1,
.rd-hero-title {
  margin: 0 0 32px;
  font-size: clamp(2.85rem, 6vw, 4.75rem);
  font-weight: 700;
  letter-spacing: -0.055em;
  line-height: 0.95;
  color: var(--rd-ink);
  text-wrap: balance;
}
.rd-lede,
.rd-split-copy p,
.rd-section-head p,
.rd-stats-copy p,
.rd-faq-intro p,
.rd-bento-card p,
.rd-close p {
  margin: 0;
  color: var(--rd-muted);
  font-size: 17px;
  line-height: 1.55;
}
.rd-lede { max-width: 36em; margin-bottom: 40px; line-height: 1.65; }
.rd-hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.rd-hero-meta {
  margin: 14px 0 0;
  font-size: 14px;
  color: var(--rd-faint);
}

.rd-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: background 160ms var(--ease-out), transform 160ms var(--ease-out), border-color 160ms var(--ease-out);
}
.rd-btn:active { transform: scale(0.98); }
.rd-btn-solid { background: var(--rd-cta-bg); color: var(--rd-cta-fg); }
.rd-btn-solid:hover { background: var(--rd-cta-hover); }
.rd-btn-ghost {
  background: transparent;
  color: var(--rd-ink);
  border-color: var(--rd-line-strong);
}
.rd-btn-ghost:hover { background: var(--rd-card); }
.rd-nav-btn { min-height: 38px; padding: 0 14px; font-size: 14px; }
.rd-text-link {
  display: inline-flex;
  margin-top: 16px;
  color: var(--rd-ink);
  font-weight: 700;
  font-size: 15px;
  text-decoration: none;
}
.rd-text-link:hover { text-decoration: underline; text-underline-offset: 3px; }

:is(.rd-landing, body.landing-page.rd-site) .auth-pitch-signup { position: sticky; top: 84px; }
.rd-landing .auth-signup-card {
  background: var(--rd-card);
  border: 1px solid var(--rd-line);
  border-radius: 24px;
  box-shadow: var(--rd-shadow);
  padding: 22px 20px 16px;
}
.rd-landing .auth-signup-card .clerk-sign-in-intro h2 {
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--rd-ink);
}
.rd-landing .auth-signup-card .clerk-sign-in-intro p,
.rd-landing .clerk-sign-in-legal { color: var(--rd-muted); }
.rd-landing .clerk-sign-in-legal a { color: var(--rd-ink); font-weight: 700; }
#clerk-sign-in { scroll-margin-top: 88px; }

.rd-stage { padding: 56px 0 12px; }
.rd-section-head { max-width: 640px; margin: 0 auto 22px; text-align: center; }
.rd-section-head h2,
.rd-split h2,
.rd-stats-copy h2,
.rd-faq-intro h2,
.rd-close h2,
.rd-landing .auth-bench-title {
  margin: 0 0 10px;
  font-size: clamp(1.85rem, 3.4vw, 2.7rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.05;
  color: var(--rd-ink);
}
.rd-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: 14px;
}
.rd-tab {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid var(--rd-line);
  background: var(--rd-card);
  color: var(--rd-muted);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}
.rd-tab input {
  position: absolute;
  inset: 0;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}
.rd-tab:has(input:checked) {
  background: var(--rd-cta-bg);
  color: var(--rd-cta-fg);
  border-color: transparent;
}
.rd-tab:focus-within {
  outline: 2px solid var(--rd-violet-solid);
  outline-offset: 3px;
}
.rd-frame {
  background: var(--rd-card);
  border: 1px solid var(--rd-line);
  border-radius: 28px;
  box-shadow: var(--rd-shadow);
  padding: 16px;
  min-height: 390px;
}
.rd-panel { display: none; }
.rd-stage-switch:has(input[value="chat"]:checked) .rd-panel[data-panel="chat"],
.rd-stage-switch:has(input[value="research"]:checked) .rd-panel[data-panel="research"],
.rd-stage-switch:has(input[value="builder"]:checked) .rd-panel[data-panel="builder"],
.rd-stage-switch:has(input[value="files"]:checked) .rd-panel[data-panel="files"] {
  display: block;
}

.rd-app {
  display: grid;
  grid-template-columns: 176px 1fr;
  min-height: 356px;
  border: 1px solid var(--rd-line);
  border-radius: 18px;
  overflow: hidden;
  background: var(--rd-field);
}
.rd-app-side { padding: 14px 10px; border-right: 1px solid var(--rd-line); }
.rd-app-side-label {
  margin: 0 8px 8px !important;
  padding: 0 !important;
  font-size: 14px !important;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--rd-faint) !important;
  background: transparent !important;
}
.rd-app-side p {
  margin: 0 0 4px;
  padding: 8px 10px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--rd-muted);
}
.rd-app-side p.is-on { background: var(--rd-card); color: var(--rd-ink); }
.rd-app-main { display: flex; flex-direction: column; gap: 12px; padding: 14px; }
.rd-app-top { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--rd-ink); }
.rd-mark { width: 22px; height: 22px; color: var(--rd-ink); }
.rd-pill {
  margin-left: auto;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--rd-mint-wash);
  color: var(--rd-mint);
  font-size: 14px;
  font-weight: 700;
}
.rd-bubble { border-radius: 16px; padding: 12px 14px; font-size: 14.5px; line-height: 1.45; }
.rd-bubble-user {
  margin-left: 16%;
  background: var(--rd-violet-solid);
  color: var(--rd-bg);
}
html[data-theme="dark"] .rd-bubble-user { color: var(--rd-ink); }
.rd-bubble-ai {
  background: var(--rd-card);
  border: 1px solid var(--rd-line);
  color: var(--rd-ink);
}
.rd-bubble-ai p { margin: 0 0 10px; }
.rd-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.rd-chips span {
  padding: 4px 8px;
  border-radius: 999px;
  background: var(--rd-sky-wash);
  color: var(--rd-ink);
  font-size: 14px;
  font-weight: 700;
}
.rd-composer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding: 12px 12px 12px 14px;
  border: 1px solid var(--rd-line);
  border-radius: 14px;
  background: var(--rd-card);
  color: var(--rd-faint);
  font-size: 14px;
}
.rd-composer span {
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--rd-cta-bg);
  color: var(--rd-cta-fg);
  font-size: 14px;
  font-weight: 700;
}

.rd-research, .rd-files { padding: 8px 8px 4px; }
.rd-example {
  margin: 0 0 8px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--rd-faint);
}
.rd-research h3, .rd-site h3 {
  margin: 0 0 8px;
  font-size: 1.45rem;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--rd-ink);
}
.rd-research > p, .rd-site-note, .rd-files-ask {
  margin: 0 0 16px;
  max-width: 52ch;
  color: var(--rd-muted);
  line-height: 1.5;
}
.rd-sources, .rd-files ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.rd-sources li, .rd-files li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border-radius: 14px;
  background: var(--rd-field);
  border: 1px solid var(--rd-line);
}
.rd-sources li span:last-child, .rd-files li span:last-child { display: flex; flex-direction: column; gap: 2px; }
.rd-sources strong, .rd-files strong { color: var(--rd-ink); font-size: 14px; }
.rd-sources small, .rd-files small { color: var(--rd-muted); font-size: 14px; }
.rd-source-mark {
  flex: 0 0 52px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--rd-violet-wash);
  color: var(--rd-violet);
  font-size: 14px;
  font-weight: 800;
  white-space: nowrap;
}
.rd-source-mark-alt { background: var(--rd-sky-wash); color: #215F9A; }
.rd-source-mark-mint { background: var(--rd-mint-wash); color: var(--rd-mint); }
html[data-theme="dark"] .rd-source-mark-alt { color: #B9D4F5; }
.rd-files .material-symbols-rounded {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--rd-peach-wash);
  color: var(--rd-ink);
  font-size: 20px;
}
.rd-files-ask {
  margin-top: 14px;
  margin-bottom: 0;
  padding: 12px 14px;
  border-radius: 14px;
  background: var(--rd-violet-wash);
  color: var(--rd-ink);
  font-weight: 600;
}

.rd-browser {
  border: 1px solid var(--rd-line);
  border-radius: 18px;
  overflow: hidden;
  background: var(--rd-field);
  min-height: 340px;
}
.rd-browser-bar, .rd-build-top {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--rd-line);
  color: var(--rd-muted);
  font-size: 14px;
  font-weight: 700;
}
.rd-browser-bar span, .rd-build-top span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--rd-line-strong);
}
.rd-url {
  margin-left: 8px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--rd-card);
  color: var(--rd-ink);
}
.rd-browser-bar em, .rd-pro {
  margin-left: auto;
  padding: 2px 7px;
  border-radius: 999px;
  background: var(--rd-violet-solid);
  color: var(--rd-bg);
  font-style: normal;
  font-size: 14px;
  font-weight: 700;
}
.rd-pro { margin-left: 8px; vertical-align: 2px; }
.rd-kicker .rd-pro, h3 .rd-pro { margin-left: 6px; }
.rd-site { padding: 28px 22px 22px; }
.rd-site-kicker { margin: 0 0 8px; font-size: 14px; font-weight: 700; color: var(--rd-violet); }
.rd-site-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 14px; }
.rd-site-grid div {
  padding: 14px;
  border-radius: 14px;
  background: var(--rd-card);
  border: 1px solid var(--rd-line);
}
.rd-site-grid strong { display: block; font-size: 1.6rem; letter-spacing: -0.04em; color: var(--rd-ink); }
.rd-site-grid span, .rd-site-note { color: var(--rd-muted); font-size: 14px; }
.rd-site-note { margin: 0; }

.rd-stats {
  display: grid;
  grid-template-columns: minmax(220px, 0.75fr) 1.25fr;
  gap: 28px;
  align-items: center;
  margin-top: 28px;
  padding: 32px;
  border-radius: 28px;
  background: var(--rd-violet-wash);
}
.rd-stats-copy h2, .rd-stats-copy p { color: var(--rd-ink); }
.rd-stats-copy p { color: var(--rd-muted); margin-bottom: 4px; }
.rd-stat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px 22px; margin: 0; }
.rd-stat-grid dt {
  font-size: clamp(1.8rem, 3vw, 2.3rem);
  font-weight: 700;
  letter-spacing: -0.045em;
  font-variant-numeric: tabular-nums;
  color: var(--rd-ink);
}
.rd-stat-grid dt span { font-size: 0.55em; font-weight: 600; color: var(--rd-muted); }
.rd-stat-grid dd { margin: 4px 0 0; color: var(--rd-muted); font-size: 14px; line-height: 1.4; }

.rd-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  margin-top: 18px;
  padding: 48px 52px;
  border-radius: 28px;
}
.rd-wash-violet { background: var(--rd-violet-wash); }
.rd-wash-mint { background: var(--rd-mint-wash); }
.rd-wash-peach { background: var(--rd-peach-wash); }
.rd-split h2 {
  max-width: 14em;
  line-height: 1.15;
  margin-bottom: 16px;
}
.rd-split-copy .rd-kicker { margin-bottom: 16px; }
.rd-split-copy p {
  margin-top: 0;
  font-size: 17px;
  line-height: 1.65;
  max-width: 36em;
}
.rd-split-copy .rd-btn,
.rd-split-copy .rd-text-link { margin-top: 24px; }
.rd-mock {
  background: var(--rd-card);
  border: 1px solid var(--rd-line);
  border-radius: 20px;
  box-shadow: var(--rd-shadow);
  padding: 16px;
}
.rd-model {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: baseline;
  padding: 12px 12px;
  border-radius: 12px;
  color: var(--rd-ink);
  font-weight: 700;
}
.rd-model small { color: var(--rd-muted); font-weight: 600; font-size: 14px; }
.rd-model.is-on { background: var(--rd-violet-wash); }
.rd-mock-cite p { margin: 0 0 12px; font-weight: 700; color: var(--rd-ink); }
.rd-mock-cite div {
  display: flex;
  gap: 8px;
  align-items: baseline;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--rd-line);
  color: var(--rd-ink);
  font-size: 14px;
}
.rd-mock-cite b {
  width: 18px;
  color: var(--rd-violet);
}
.rd-mock-cite em { display: block; color: var(--rd-muted); font-style: normal; font-size: 14px; }
.rd-build-top { padding: 0 0 10px; margin-bottom: 14px; }
.rd-mock-build strong { display: block; font-size: 1.4rem; letter-spacing: -0.03em; color: var(--rd-ink); }
.rd-mock-build em { color: var(--rd-muted); font-style: normal; font-size: 14px; }
.rd-build-bars { display: grid; gap: 8px; margin-top: 16px; }
.rd-build-bars i {
  display: block;
  height: 10px;
  border-radius: 999px;
  background: var(--rd-violet-wash);
}
.rd-build-bars i:nth-child(2) { width: 82%; background: var(--rd-mint-wash); }
.rd-build-bars i:nth-child(3) { width: 64%; background: var(--rd-peach-wash); }

.rd-bento { padding: 48px 0 12px; }
.rd-bento-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.rd-bento-card {
  padding: 20px;
  border-radius: 22px;
  background: var(--rd-card);
  border: 1px solid var(--rd-line);
}
.rd-bento-card h3 {
  margin: 0 0 6px;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  color: var(--rd-ink);
}
.rd-bento-card p { font-size: 14.5px; }
.rd-bento-ui { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.rd-bento-ui span {
  padding: 8px 10px;
  border-radius: 12px;
  background: var(--rd-field);
  border: 1px solid var(--rd-line);
  color: var(--rd-ink);
  font-size: 14px;
  font-weight: 700;
}
.rd-bento-sync span:first-child { background: var(--rd-mint-wash); }
.rd-bento-orbit span:first-child { background: var(--rd-violet-wash); }

.rd-landing .auth-pricing { border-top: 0; padding: 56px 0 8px; }
.rd-landing .auth-pricing-inner { width: min(1120px, calc(100% - 40px)); }
.rd-landing .auth-bench-lede {
  color: var(--rd-muted);
  font-size: 16px;
  max-width: 42em;
}
.rd-landing .auth-price-card {
  background: var(--rd-card);
  border: 1px solid var(--rd-line);
  border-radius: 22px;
  box-shadow: var(--rd-shadow);
}
.rd-landing .auth-price-card:hover { border-color: var(--rd-line-strong); }
.rd-landing .auth-price-card-pro {
  border: 2px solid var(--rd-violet-solid);
}
.rd-landing .auth-price-name,
.rd-landing .auth-price-amount { color: var(--rd-ink); font-weight: 700; }
.rd-landing .auth-price-amount small,
.rd-landing .auth-price-meter,
.rd-landing .auth-price-limit { color: var(--rd-muted); }
.rd-landing .auth-price-meter,
.rd-landing .auth-price-limit { border-bottom-color: var(--rd-line); }
.rd-landing .auth-price-cta {
  border-radius: 999px;
  color: var(--rd-ink);
  border-color: var(--rd-line-strong);
  font-weight: 700;
}
.rd-landing .auth-price-cta:hover { border-color: var(--rd-ink); }
.rd-landing .auth-price-cta-primary {
  background: var(--rd-cta-bg);
  color: var(--rd-cta-fg);
  border-color: transparent;
}
.rd-landing .auth-price-cta-primary:hover { background: var(--rd-cta-hover); opacity: 1; }
.rd-landing .auth-price-feats li.is-in { color: var(--rd-ink); }
.rd-landing .auth-price-feats li.is-out,
.rd-landing .auth-price-feats li.is-out > span:first-child { color: var(--rd-faint); }
.rd-landing .auth-price-feats li.is-in > span:first-child { color: var(--rd-mint); }

.rd-faq {
  display: grid;
  grid-template-columns: minmax(200px, 0.7fr) 1.3fr;
  gap: 28px;
  padding: 56px 0 20px;
}
.rd-faq-item { border-bottom: 1px solid var(--rd-line); }
.rd-faq-item summary {
  position: relative;
  padding: 16px 32px 16px 0;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
  color: var(--rd-ink);
}
.rd-faq-item summary::-webkit-details-marker { display: none; }
.rd-faq-item summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 14px;
  color: var(--rd-muted);
  font-weight: 500;
  font-size: 20px;
}
.rd-faq-item[open] summary::after { content: "\2013"; }
.rd-faq-item p {
  margin: 0 0 16px;
  max-width: 65ch;
  color: var(--rd-muted);
  font-size: 15px;
  line-height: 1.55;
}

.rd-close {
  margin-top: 20px;
  margin-bottom: 28px;
  padding: 48px 24px;
  border-radius: 28px;
  background: var(--rd-ink);
  color: var(--rd-bg);
  text-align: center;
}
.rd-close h2 { color: inherit; }
.rd-close p { margin: 0 0 18px; color: color-mix(in srgb, var(--rd-bg) 78%, transparent); }
.rd-close .rd-btn-solid { background: var(--rd-bg); color: var(--rd-ink); }
.rd-close .rd-btn-solid:hover { background: color-mix(in srgb, var(--rd-bg) 88%, var(--rd-ink)); }

:is(.rd-landing, body.landing-page.rd-site) .rd-foot { border-top: 1px solid var(--rd-line); padding: 36px 0 24px; }
.rd-foot-grid {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto 22px;
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 28px;
}
.rd-foot-brand p {
  margin: 12px 0 0;
  max-width: 28ch;
  color: var(--rd-muted);
  font-size: 14px;
  line-height: 1.5;
}
.rd-foot nav h2 {
  margin: 0 0 10px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--rd-ink);
}
.rd-foot nav a {
  display: block;
  padding: 4px 0;
  color: var(--rd-muted);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}
.rd-foot nav a:hover { color: var(--rd-ink); }
:is(.rd-landing, body.landing-page.rd-site) .auth-foot-copy { color: var(--rd-faint); }
:is(.rd-landing, body.landing-page.rd-site) .auth-foot-inner { width: min(1120px, calc(100% - 40px)); }

#rd-product, #rd-chat, #rd-research, #rd-builder, #rd-pricing { scroll-margin-top: 76px; }

@media (max-width: 980px) {
  :is(.rd-landing, body.landing-page.rd-site) .landing-nav-links { display: none; }
  :is(.rd-landing, body.landing-page.rd-site) .landing-nav-toggle { display: flex; }
  .rd-hero,
  .rd-split,
  .rd-stats,
  .rd-faq,
  .rd-foot-grid,
  .rd-app { grid-template-columns: 1fr; }
  :is(.rd-landing, body.landing-page.rd-site) .auth-pitch-signup { position: static; order: 0; }
  .rd-app-side { display: none; }
  .rd-hero { padding: 48px 0 56px; gap: 44px; }
  .rd-split h2 { max-width: none; }
}

@media (max-width: 640px) {
  .rd-topbar-go { display: none; }
  .rd-hero h1 { font-size: 2.35rem; }
  .rd-hero-actions, .rd-hero-actions .rd-btn { width: 100%; }
  .rd-hero, .rd-stage, .rd-stats, .rd-bento, .rd-faq, .rd-close, .rd-split,
  .rd-landing .auth-pricing-inner, .rd-foot-grid, :is(.rd-landing, body.landing-page.rd-site) .auth-foot-inner {
    width: min(1120px, calc(100% - 28px));
  }
  .rd-frame, .rd-split, .rd-stats, .rd-close { border-radius: 20px; }
  .rd-split, .rd-stats { padding: 20px; }
  .rd-bento-grid, .rd-site-grid { grid-template-columns: 1fr; }
  .rd-bubble-user { margin-left: 0; }
}