:root {
  --ink: #18315c;
  --ink-2: #36567f;
  --muted: #6d7e9b;
  --soft: #f5f9ff;
  --paper: #ffffff;
  --line: rgba(42, 83, 132, 0.14);
  --blue: #58a8ff;
  --cyan: #35d6df;
  --mint: #56e6c8;
  --violet: #8a7cff;
  --lavender: #c6b7ff;
  --peach: #ffa986;
  --shadow: 0 24px 80px rgba(40, 86, 152, 0.16);
  --radius-xl: 36px;
  --radius-lg: 24px;
  --radius-md: 16px;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 16% 8%, rgba(130, 229, 255, 0.34), transparent 26rem),
    radial-gradient(circle at 88% 4%, rgba(203, 187, 255, 0.34), transparent 24rem),
    linear-gradient(180deg, #fbfdff 0%, #f7fbff 45%, #ffffff 100%);
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input { font: inherit; }

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(calc(100% - 32px), var(--max));
  margin: 18px auto 0;
  padding: 14px 16px 14px 18px;
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid rgba(255, 255, 255, 0.72);
  box-shadow: 0 10px 34px rgba(70, 122, 190, 0.10);
  backdrop-filter: blur(18px);
  border-radius: 999px;
}
.site-header.compact { margin-top: 14px; }
.brand { display: inline-flex; align-items: center; }
.brand img { height: 34px; width: auto; }
.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--ink-2);
  font-size: 0.94rem;
}
.site-nav a {
  padding: 10px 13px;
  border-radius: 999px;
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}
.site-nav a:hover,
.site-nav a[aria-current="page"] {
  background: rgba(88, 168, 255, 0.12);
  color: var(--ink);
}
.nav-cta {
  background: linear-gradient(135deg, rgba(88,168,255,0.18), rgba(86,230,200,0.18), rgba(138,124,255,0.18));
  border: 1px solid rgba(88, 168, 255, 0.22);
  font-weight: 700;
}
.nav-toggle { display: none; }

.section-shell {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(420px, 1.2fr);
  gap: 24px;
  align-items: center;
  min-height: calc(100vh - 110px);
  padding: 74px 0 64px;
}
.hero-copy { position: relative; z-index: 1; }
.eyebrow, .section-kicker {
  color: #4285d5;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
h1, h2, h3, p { margin-top: 0; }
h1 {
  margin: 18px 0 20px;
  font-size: clamp(3rem, 6vw, 6.5rem);
  line-height: 0.94;
  letter-spacing: -0.07em;
  color: #10284f;
}
h2 {
  font-size: clamp(2rem, 4vw, 4.2rem);
  line-height: 1;
  letter-spacing: -0.055em;
  color: #132d56;
}
h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
  color: #17335f;
}
p {
  color: var(--muted);
  line-height: 1.65;
  font-size: 1rem;
}
.hero-copy p {
  max-width: 650px;
  font-size: clamp(1.05rem, 1.45vw, 1.26rem);
}
.hero-actions, .cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border: 0;
  border-radius: 999px;
  font-weight: 800;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}
.button:hover { transform: translateY(-2px); }
.button.primary {
  color: #fff;
  background: linear-gradient(135deg, #4aa3ff, #30d2db 52%, #8d7dff);
  box-shadow: 0 16px 44px rgba(67, 154, 232, 0.30);
}
.button.secondary {
  color: var(--ink);
  background: rgba(255,255,255,0.86);
  border: 1px solid var(--line);
  box-shadow: 0 12px 34px rgba(73, 112, 176, 0.12);
}
.hero-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}
.hero-proof span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,0.72);
  border: 1px solid rgba(91, 167, 255, 0.16);
  color: var(--ink-2);
  font-weight: 700;
  font-size: 0.86rem;
}
.hero-proof span::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
}
.hero-visual {
  position: relative;
  margin-right: min(-10vw, -80px);
}
.hero-visual::before {
  content: "";
  position: absolute;
  inset: 10% 9% 9% 16%;
  background: radial-gradient(circle, rgba(87, 210, 223, 0.38), transparent 65%);
  filter: blur(44px);
  z-index: -1;
}
.hero-visual img {
  width: 100%;
  border-radius: 38px;
  filter: drop-shadow(0 32px 80px rgba(77, 131, 197, 0.22));
}

.intro-grid {
  display: grid;
  grid-template-columns: 0.25fr 1fr 0.78fr;
  gap: 32px;
  align-items: start;
  padding: 50px 0 82px;
}
.intro-copy p { font-size: 1.15rem; }
.intro-card {
  padding: 30px;
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.74);
  border: 1px solid rgba(88,168,255,0.18);
  box-shadow: var(--shadow);
}
.intro-card p { margin-bottom: 0; color: var(--ink-2); font-weight: 650; }

.section-heading {
  display: grid;
  grid-template-columns: 0.4fr 1fr;
  gap: 32px;
  align-items: end;
  margin-bottom: 32px;
}
.section-heading p { max-width: 670px; font-size: 1.08rem; }
.primitive-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  padding-bottom: 92px;
}
.primitive-card, .use-case, .flow-step, .panel, .code-panel, .signup-card, .docs-empty, .docs-sidebar, .signup-note {
  background: rgba(255,255,255,0.78);
  border: 1px solid rgba(69, 128, 200, 0.14);
  box-shadow: 0 18px 64px rgba(73, 119, 183, 0.12);
  backdrop-filter: blur(14px);
}
.primitive-card {
  position: relative;
  min-height: 250px;
  padding: 24px;
  border-radius: 28px;
  transition: transform 200ms ease, box-shadow 200ms ease;
}
.status-pill {
  position: absolute;
  top: 18px;
  right: 18px;
  font-size: 0.66rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1;
}
.status-live { background: rgba(56, 189, 144, 0.18); color: #1f7a55; }
.status-progress { background: rgba(255, 175, 87, 0.20); color: #8a5616; }
.status-planned { background: rgba(120, 132, 158, 0.16); color: #4d5878; }
.primitive-card:hover { transform: translateY(-5px); box-shadow: 0 24px 80px rgba(73, 119, 183, 0.18); }
.primitive-card p { font-size: 0.94rem; margin-bottom: 0; }
.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin-bottom: 20px;
  border-radius: 16px;
  color: #fff;
  font-weight: 900;
  box-shadow: 0 12px 32px rgba(73, 135, 219, 0.20);
}
.radiant { background: linear-gradient(135deg, #60b8ff, #7f79ff); }
.seldon { background: linear-gradient(135deg, #ffb66f, #ffdc80); color: #714520; }
.daneel { background: linear-gradient(135deg, #7d79ff, #c38fff); }
.trantor { background: linear-gradient(135deg, #39cfdf, #4da4ff); }
.terminus { background: linear-gradient(135deg, #55e1c6, #7fc6ff); }
.speaker { background: linear-gradient(135deg, #ff9fb1, #ffbc8a); color: #6e3650; }
.mallow { background: linear-gradient(135deg, #91a7ff, #62e3c8); }
.hardin { background: linear-gradient(135deg, #ff8e72, #ffc28b); color: #6e3a1f; }
.hober { background: linear-gradient(135deg, #d869ff, #ff8acb); }
.payments { background: linear-gradient(135deg, #3fd49e, #aeeb6e); color: #1f5e35; }
.palver { background: linear-gradient(135deg, #5a8dff, #4fd6ff); }
.common { background: linear-gradient(135deg, #c8d7f1, #f0f4ff); color: var(--ink); }
.muted-card { background: linear-gradient(180deg, rgba(255,255,255,0.86), rgba(245, 250, 255, 0.74)); }

.architecture { padding-bottom: 82px; }
.flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  counter-reset: step;
}
.flow-step {
  position: relative;
  overflow: hidden;
  min-height: 244px;
  padding: 26px;
  border-radius: 28px;
}
.flow-step::after {
  content: "";
  position: absolute;
  right: -40px;
  top: -40px;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(86,230,200,0.24), transparent 68%);
}
.flow-step span {
  display: inline-block;
  margin-bottom: 36px;
  color: #60a7ef;
  font-weight: 900;
  letter-spacing: 0.1em;
}
.flow-step p { font-size: 0.95rem; margin-bottom: 0; }

.split-section {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 18px;
  align-items: stretch;
  padding-bottom: 92px;
}
.panel, .code-panel { border-radius: var(--radius-xl); }
.panel { padding: 38px; }
.panel p { font-size: 1.05rem; }
.check-list {
  display: grid;
  gap: 12px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}
.check-list li {
  position: relative;
  padding-left: 32px;
  color: var(--ink-2);
  font-weight: 700;
}
.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: -1px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 8px;
  color: #fff;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  font-size: 0.82rem;
}
.code-panel {
  overflow: hidden;
  background: linear-gradient(135deg, rgba(17, 39, 78, 0.96), rgba(42, 48, 111, 0.94));
  color: #d9f7ff;
}
.code-window-bar {
  display: flex;
  gap: 8px;
  padding: 18px 22px;
  background: rgba(255,255,255,0.05);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.code-window-bar span {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--lavender);
}
.code-window-bar span:nth-child(2) { background: var(--cyan); }
.code-window-bar span:nth-child(3) { background: var(--peach); }
pre { margin: 0; padding: 28px; overflow-x: auto; }
code { font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace; font-size: 0.92rem; line-height: 1.7; }

.use-case-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  padding-bottom: 92px;
}
.use-case {
  padding: 26px;
  border-radius: 28px;
}
.use-case p { margin-bottom: 0; font-size: 0.95rem; }

.cta-section {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  align-items: center;
  margin-bottom: 80px;
  padding: 42px;
  border-radius: 38px;
  background:
    radial-gradient(circle at 16% 24%, rgba(88,168,255,0.28), transparent 22rem),
    radial-gradient(circle at 82% 10%, rgba(86,230,200,0.25), transparent 20rem),
    rgba(255,255,255,0.74);
  border: 1px solid rgba(88,168,255,0.16);
  box-shadow: var(--shadow);
}
.cta-section h2 { margin-bottom: 14px; }
.cta-section p { max-width: 680px; margin-bottom: 0; }

.site-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
  padding: 34px 0 46px;
  border-top: 1px solid var(--line);
}
.site-footer img { height: 32px; width: auto; }
.site-footer p { margin: 12px 0 0; font-size: 0.92rem; }
.site-footer nav { display: flex; gap: 18px; color: var(--muted); font-weight: 700; }
.site-footer a:hover { color: var(--ink); }
.minimal-footer { margin-top: 20px; }

.page-main { padding: 70px 0 90px; min-height: calc(100vh - 190px); }
.docs-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 20px;
  align-items: start;
}
.docs-sidebar {
  position: sticky;
  top: 110px;
  display: grid;
  gap: 8px;
  padding: 22px;
  border-radius: 24px;
}
.docs-sidebar strong { display: block; margin-bottom: 10px; color: var(--ink); }
.docs-sidebar a {
  padding: 10px 12px;
  border-radius: 14px;
  color: var(--muted);
  font-weight: 700;
}
.docs-sidebar a:hover { background: rgba(88,168,255,0.10); color: var(--ink); }
.docs-empty {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: clamp(36px, 5vw, 60px);
  border-radius: 38px;
  background:
    radial-gradient(circle at 80% 12%, rgba(86,230,200,0.18), transparent 20rem),
    radial-gradient(circle at 20% 74%, rgba(138,124,255,0.15), transparent 20rem),
    rgba(255,255,255,0.78);
}
.docs-empty h1 { max-width: 780px; font-size: clamp(2.1rem, 3.4vw, 3.4rem); margin-bottom: 18px; }
.docs-empty > p { max-width: 720px; font-size: 1.05rem; margin-bottom: 36px; }

.docs-coming {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  width: 100%;
}
.docs-coming article {
  padding: 22px 24px;
  border-radius: 22px;
  background: rgba(255,255,255,0.74);
  border: 1px solid rgba(69, 128, 200, 0.12);
}
.docs-coming h2 { font-size: 1.15rem; margin: 0 0 8px; }
.docs-coming p { margin: 0; font-size: 0.92rem; color: var(--muted); }

/* Sidebar refinements for multi-page docs */
.docs-sidebar .sidebar-section { margin-top: 22px; }
.docs-sidebar a[aria-current="page"] {
  background: rgba(88,168,255,0.14);
  color: var(--ink);
}
.docs-sidebar .muted-link {
  color: rgba(120, 132, 158, 0.7);
  cursor: default;
  pointer-events: none;
}

/* Docs landing — primitive grid */
.docs-primitives {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  width: 100%;
}
.docs-primitive {
  position: relative;
  display: block;
  padding: 22px 24px;
  border-radius: 22px;
  background: rgba(255,255,255,0.78);
  border: 1px solid rgba(69, 128, 200, 0.14);
  text-decoration: none;
  color: inherit;
  transition: transform 180ms ease, box-shadow 180ms ease;
}
a.docs-primitive:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 60px rgba(73, 119, 183, 0.14);
}
.docs-primitive.disabled { opacity: 0.65; }
.docs-primitive .card-icon {
  width: 40px;
  height: 40px;
  margin-bottom: 14px;
  border-radius: 13px;
  font-size: 0.95rem;
}
.docs-primitive h2 { font-size: 1.1rem; margin: 0 0 6px; }
.docs-primitive p { margin: 0; font-size: 0.92rem; color: var(--muted); }

/* Article layout for primitive spec pages */
.docs-article {
  max-width: 820px;
  padding: clamp(28px, 4vw, 48px);
  border-radius: 32px;
  background: rgba(255,255,255,0.78);
  border: 1px solid rgba(69, 128, 200, 0.12);
  backdrop-filter: blur(14px);
}
.docs-article-header { margin-bottom: 34px; }
.docs-article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}
.docs-article-meta .card-icon { margin: 0; }
.docs-article-meta .status-pill { position: static; }
.docs-article h1 {
  font-size: clamp(2.4rem, 4vw, 3.6rem);
  margin: 6px 0 14px;
}
.docs-lede {
  font-size: 1.12rem;
  line-height: 1.6;
  color: var(--ink);
  max-width: 680px;
}
.docs-status-note {
  margin-top: 22px;
  padding: 14px 18px;
  border-radius: 16px;
  background: rgba(255, 219, 173, 0.34);
  border: 1px solid rgba(255, 175, 87, 0.40);
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--ink);
  max-width: 700px;
}
.docs-status-note strong { color: #8a5616; margin-right: 4px; }
.docs-article section { margin-top: 36px; }
.docs-article section h2 {
  font-size: 1.45rem;
  margin: 0 0 14px;
  scroll-margin-top: 110px;
}
.docs-article section p { font-size: 1rem; line-height: 1.65; max-width: 700px; }
.docs-article code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.88em;
  padding: 1px 6px;
  border-radius: 6px;
  background: rgba(88,168,255,0.10);
  color: var(--ink);
}

/* Definition list for concepts */
.docs-deflist {
  margin: 18px 0 0;
  display: grid;
  gap: 14px;
}
.docs-deflist dt {
  font-weight: 800;
  color: var(--ink);
  font-size: 1.02rem;
}
.docs-deflist dd {
  margin: 4px 0 0;
  font-size: 0.98rem;
  line-height: 1.6;
  color: var(--muted);
  max-width: 700px;
}
.docs-deflist dd code { color: var(--ink); }

/* Endpoint / spec table */
.docs-table {
  margin-top: 14px;
  border-collapse: collapse;
  width: 100%;
  font-size: 0.92rem;
}
.docs-table th, .docs-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid rgba(69, 128, 200, 0.10);
  vertical-align: top;
}
.docs-table th {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  font-weight: 700;
}
.docs-table td:first-child {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.82rem;
  color: var(--muted);
  white-space: nowrap;
}
.docs-table td code { background: transparent; padding: 0; }

/* Code panel in docs context */
.docs-code {
  margin-top: 14px;
  border-radius: 18px;
  overflow: hidden;
  background: #0f1730;
  color: #e6edff;
}
.docs-code pre { padding: 22px 26px; }
.docs-code code { background: transparent; color: #e6edff; padding: 0; font-size: 0.86rem; }

.docs-inline-ref {
  font-weight: 700;
  color: var(--ink);
  border-bottom: 1px dotted rgba(69, 128, 200, 0.4);
}

/* Pager at bottom of article */
.docs-pager {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 50px;
  padding-top: 24px;
  border-top: 1px solid rgba(69, 128, 200, 0.12);
}
.docs-pager a {
  display: block;
  padding: 14px 18px;
  border-radius: 16px;
  background: rgba(88,168,255,0.08);
  text-decoration: none;
  min-width: 180px;
}
.docs-pager a:hover { background: rgba(88,168,255,0.16); }
.docs-pager a span { display: block; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); }
.docs-pager a strong { display: block; color: var(--ink); margin-top: 4px; }
.docs-pager-next { text-align: right; margin-left: auto; }

/* Bulleted lists inside docs articles */
.docs-bullets {
  margin: 12px 0 0;
  padding-left: 22px;
  display: grid;
  gap: 8px;
  max-width: 700px;
  font-size: 0.98rem;
  line-height: 1.6;
  color: var(--muted);
}
.docs-bullets li code { color: var(--ink); }

/* Mermaid diagram blocks inside docs articles */
.docs-diagram {
  margin: 20px 0 6px;
  padding: 22px;
  border-radius: 22px;
  background: rgba(255,255,255,0.74);
  border: 1px solid rgba(69, 128, 200, 0.12);
  overflow-x: auto;
}
.docs-diagram pre.mermaid {
  background: transparent;
  padding: 0;
  margin: 0;
  color: transparent;
  text-align: center;
}
.docs-diagram pre.mermaid svg { max-width: 100%; height: auto; display: inline-block; }
.docs-diagram-caption {
  margin: 14px 4px 0;
  font-size: 0.82rem;
  color: var(--muted);
  text-align: center;
}

/* Three-column use-case grid on the homepage */
.use-case-grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.use-case-link {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  transition: transform 180ms ease, box-shadow 180ms ease;
}
.use-case-link:hover {
  transform: translateY(-4px);
  box-shadow: 0 22px 64px rgba(73, 119, 183, 0.16);
}
.use-case .usecase-tag {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 10px;
}
.use-case .usecase-link {
  margin-top: auto;
  padding-top: 14px;
  font-weight: 700;
  color: #3461a8;
}
.use-case-foot {
  margin-top: 8px;
  text-align: right;
}
.use-case-foot a {
  font-weight: 700;
  color: #3461a8;
  text-decoration: none;
}
.use-case-foot a:hover { text-decoration: underline; }

/* Use-cases landing */
.usecases-hero {
  max-width: 760px;
  margin: 0 auto 56px;
  text-align: center;
}
.usecases-hero h1 { font-size: clamp(2.6rem, 4.4vw, 4rem); margin: 8px 0 18px; }
.usecases-hero p { font-size: 1.08rem; max-width: 640px; margin: 0 auto; }

.usecase-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 64px;
}
.usecase-card {
  display: flex;
  flex-direction: column;
  padding: 28px;
  border-radius: 26px;
  background: rgba(255,255,255,0.82);
  border: 1px solid rgba(69, 128, 200, 0.14);
  box-shadow: 0 18px 56px rgba(73, 119, 183, 0.10);
  text-decoration: none;
  color: inherit;
  transition: transform 200ms ease, box-shadow 200ms ease;
}
.usecase-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 72px rgba(73, 119, 183, 0.18);
}
.usecase-card h2 { font-size: 1.5rem; margin: 0 0 10px; }
.usecase-card p { font-size: 0.96rem; line-height: 1.55; color: var(--muted); margin: 0 0 20px; }
.usecase-card .usecase-tag {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 10px;
}
.usecase-card .usecase-link {
  margin-top: auto;
  font-weight: 700;
  color: #3461a8;
}

.usecases-foot {
  max-width: 760px;
  margin: 0 auto;
  padding: 28px;
  text-align: center;
}
.usecases-foot h2 { font-size: 1.4rem; margin: 0 0 10px; }
.usecases-foot p { color: var(--muted); max-width: 620px; margin: 0 auto; }

/* Use-case article pages */
.usecase-page { display: flex; justify-content: center; }
.usecase-article {
  max-width: 820px;
  padding: clamp(28px, 4vw, 48px);
  border-radius: 32px;
  background: rgba(255,255,255,0.82);
  border: 1px solid rgba(69, 128, 200, 0.12);
  backdrop-filter: blur(14px);
}
.usecase-article h1 {
  font-size: clamp(2.4rem, 4vw, 3.6rem);
  margin: 8px 0 18px;
}
.usecase-lede {
  font-size: 1.12rem;
  line-height: 1.6;
  color: var(--ink);
  max-width: 720px;
  margin: 0 0 28px;
}
.usecase-article section { margin-top: 36px; }
.usecase-article section h2 {
  font-size: 1.5rem;
  margin: 0 0 14px;
}
.usecase-article section h3 {
  font-size: 1.05rem;
  margin: 22px 0 8px;
  color: var(--ink);
}
.usecase-article p { font-size: 1rem; line-height: 1.7; max-width: 720px; }
.usecase-article ul { font-size: 0.98rem; line-height: 1.65; max-width: 720px; }
.usecase-article a { color: #3461a8; }
.usecase-pager {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 50px;
  padding-top: 24px;
  border-top: 1px solid rgba(69, 128, 200, 0.12);
}

@media (max-width: 980px) {
  .usecase-grid, .use-case-grid-3 { grid-template-columns: 1fr; }
}

.signup-page {
  display: grid;
  grid-template-columns: 0.9fr minmax(360px, 520px);
  gap: 36px;
  align-items: center;
}
.signup-copy h1 { font-size: clamp(3rem, 5vw, 5.5rem); }
.signup-copy p { font-size: 1.13rem; max-width: 640px; }
.signup-note {
  display: grid;
  gap: 8px;
  max-width: 560px;
  margin-top: 28px;
  padding: 22px;
  border-radius: 24px;
}
.signup-note strong { color: var(--ink); }
.signup-note span { color: var(--muted); line-height: 1.55; }
.signup-card {
  padding: 28px;
  border-radius: 34px;
  background:
    radial-gradient(circle at 18% 8%, rgba(86,230,200,0.16), transparent 14rem),
    rgba(255,255,255,0.84);
}
form { display: grid; gap: 16px; }
label { display: grid; gap: 8px; color: var(--ink-2); font-weight: 800; }
input[type="text"], input[type="email"], input[type="password"] {
  width: 100%;
  min-height: 52px;
  padding: 0 16px;
  border: 1px solid rgba(70, 121, 190, 0.18);
  border-radius: 16px;
  color: var(--ink);
  background: rgba(255,255,255,0.88);
  outline: none;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.9);
  transition: border 160ms ease, box-shadow 160ms ease;
}
input:focus {
  border-color: rgba(72, 166, 255, 0.62);
  box-shadow: 0 0 0 4px rgba(88,168,255,0.14);
}
.checkbox-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 650;
  color: var(--muted);
}
.checkbox-row input { width: 18px; height: 18px; }
.full-width { width: 100%; }
.form-message { min-height: 24px; margin: 0; color: #2f8e85; font-weight: 800; }

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 700ms ease, transform 700ms ease;
}
.reveal.is-visible { opacity: 1; transform: none; }
.delay-1 { transition-delay: 90ms; }
.delay-2 { transition-delay: 180ms; }
.delay-3 { transition-delay: 270ms; }

@media (max-width: 980px) {
  .hero,
  .intro-grid,
  .section-heading,
  .split-section,
  .signup-page,
  .docs-layout {
    grid-template-columns: 1fr;
  }
  .hero { min-height: auto; padding-top: 52px; }
  .hero-visual { margin-right: 0; }
  .primitive-grid,
  .flow,
  .use-case-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .docs-sidebar { position: static; }
  .cta-section { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 760px) {
  .site-header { border-radius: 24px; align-items: flex-start; }
  .brand img { height: 30px; }
  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    width: 42px;
    height: 42px;
    border: 0;
    border-radius: 14px;
    background: rgba(88,168,255,0.12);
    cursor: pointer;
  }
  .nav-toggle span:not(.sr-only) {
    width: 18px;
    height: 2px;
    margin: 0 auto;
    border-radius: 99px;
    background: var(--ink);
  }
  .site-nav {
    position: absolute;
    left: 12px;
    right: 12px;
    top: calc(100% + 10px);
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    border-radius: 22px;
    background: rgba(255,255,255,0.94);
    border: 1px solid rgba(88,168,255,0.16);
    box-shadow: var(--shadow);
  }
  .site-nav.open { display: flex; }
  .site-nav a { text-align: center; }
  h1 { font-size: clamp(2.7rem, 13vw, 4.3rem); }
  h2 { font-size: clamp(2rem, 9vw, 3.2rem); }
  .section-shell { width: min(calc(100% - 28px), var(--max)); }
  .primitive-grid,
  .flow,
  .use-case-grid { grid-template-columns: 1fr; }
  .hero-proof { gap: 8px; }
  .panel, .cta-section, .docs-empty { padding: 28px; border-radius: 28px; }
  .site-footer { flex-direction: column; align-items: flex-start; }
}