/* flowSCMC docs portal */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&family=Fraunces:opsz,wght@9..144,500;9..144,600;9..144,700&display=swap');

:root {
  --ink: #0f172a;
  --ink-soft: #334155;
  --muted: #64748b;
  --line: #e2e8f0;
  --surface: #ffffff;
  --wash: #f1f5f9;
  --accent: #1d4ed8;
  --accent-soft: #eff6ff;
  --accent-deep: #1e3a8a;
  --grad-start: #0f172a;
  --grad-mid: #1e3a8a;
  --grad-end: #1d4ed8;
  --radius: 12px;
  --shadow: 0 12px 40px rgba(15, 23, 42, 0.08);
  --font: "DM Sans", system-ui, sans-serif;
  --display: "Fraunces", Georgia, serif;
  --nav-h: 4.75rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  overflow-x: clip;
  max-width: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--surface);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: clip;
  max-width: 100%;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent-deep); }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: #fff;
  padding: 0.5rem 1rem;
  z-index: 1000;
}
.skip-link:focus { left: 0.5rem; top: 0.5rem; }

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

/* Top nav */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0 1.25rem;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-nav .brand { order: 1; }
.site-nav .nav-links { order: 2; margin-right: auto; }
.site-nav .search-wrap { order: 3; }
.site-nav .nav-toggle { order: 4; }
.site-nav .sidebar-toggle,
.site-nav .nav-slot { display: none; }
.nav-backdrop {
  display: none;
}

.brand {
  display: inline-flex;
  align-items: center;
  color: inherit;
  text-decoration: none;
  line-height: 0;
}
.brand img {
  width: auto;
  height: 56px;
  object-fit: contain;
  border-radius: 6px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  display: inline-block;
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}
.nav-links a:hover,
.nav-links a[aria-current="page"] {
  background: var(--accent-soft);
  color: var(--accent);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 8px;
  padding: 0.45rem 0.7rem;
  font: inherit;
  cursor: pointer;
}

.search-wrap {
  position: relative;
  min-width: 12rem;
}
.search-wrap input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.45rem 0.9rem;
  font: inherit;
  font-size: 0.88rem;
  background: var(--wash);
}
.search-wrap input:focus {
  outline: 2px solid color-mix(in srgb, var(--accent) 35%, transparent);
  border-color: var(--accent);
  background: #fff;
}
.search-results {
  position: absolute;
  top: calc(100% + 0.35rem);
  right: 0;
  left: 0;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  max-height: 18rem;
  overflow: auto;
  display: none;
  z-index: 60;
}
.search-results.open { display: block; }
.search-results a {
  display: block;
  padding: 0.65rem 0.85rem;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  font-size: 0.88rem;
}
.search-results a:last-child { border-bottom: 0; }
.search-results a:hover { background: var(--accent-soft); }
.search-results .muted { color: var(--muted); font-size: 0.78rem; }

/* Landing */
.hero {
  position: relative;
  min-height: calc(100vh - var(--nav-h));
  display: grid;
  place-items: center;
  padding: 3rem 1.25rem 4rem;
  overflow: hidden;
  color: #f8fafc;
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(29, 78, 216, 0.55), transparent 55%),
    radial-gradient(900px 500px at 90% 20%, rgba(30, 58, 138, 0.45), transparent 50%),
    linear-gradient(155deg, var(--grad-start), var(--grad-mid) 55%, #0b1224);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(248, 250, 252, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(248, 250, 252, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
  pointer-events: none;
  animation: grid-drift 28s linear infinite;
}
@keyframes grid-drift {
  from { transform: translateY(0); }
  to { transform: translateY(48px); }
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 42rem;
  text-align: center;
}
.hero-logo {
  width: 88px;
  height: 88px;
  margin: 0 auto 1.25rem;
  filter: drop-shadow(0 8px 24px rgba(0, 0, 0, 0.35));
  animation: rise 0.8s var(--ease) both;
}
.hero h1 {
  font-family: var(--display);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin: 0 0 0.75rem;
  animation: rise 0.8s var(--ease) 0.08s both;
}
.hero .lead {
  font-size: 1.1rem;
  color: #cbd5e1;
  margin: 0 auto 1.75rem;
  max-width: 34rem;
  animation: rise 0.8s var(--ease) 0.16s both;
}
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  animation: rise 0.8s var(--ease) 0.24s both;
}
@keyframes rise {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.8rem 1.25rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease);
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: #fff;
  color: var(--ink);
}
.btn-primary:hover { background: #e2e8f0; color: var(--ink); }
.btn-ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.35);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.08); color: #fff; }
.btn-accent {
  background: var(--accent);
  color: #fff;
}
.btn-accent:hover { background: var(--accent-deep); color: #fff; }
.btn-outline {
  background: #fff;
  color: var(--ink);
  border-color: var(--line);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem 1.25rem;
  color: var(--muted);
  font-size: 0.88rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  justify-content: space-between;
  background: var(--wash);
}
.site-footer a { color: var(--ink-soft); text-decoration: none; }
.site-footer a:hover { color: var(--accent); }

/* Doc layout */
.doc-shell {
  display: grid;
  grid-template-columns: 16.5rem minmax(0, 1fr);
  gap: 0;
  min-height: calc(100vh - var(--nav-h) - 4rem);
}

.doc-sidebar {
  border-right: 1px solid var(--line);
  background: #fafbfc;
  padding: 1.25rem 0.85rem;
  position: sticky;
  top: var(--nav-h);
  height: calc(100vh - var(--nav-h));
  overflow: auto;
}
.doc-sidebar-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}
.doc-sidebar-head h2 {
  margin: 0;
}
.sidebar-close {
  display: none;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 8px;
  width: 2rem;
  height: 2rem;
  font: inherit;
  line-height: 1;
  cursor: pointer;
  color: var(--ink-soft);
}
.sidebar-close:hover {
  background: var(--wash);
  color: var(--ink);
}

.doc-sidebar h2 {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 0 0.5rem 0.65rem;
  font-weight: 700;
}
.doc-sidebar nav { display: flex; flex-direction: column; gap: 0.15rem; }
.doc-sidebar a {
  display: block;
  padding: 0.45rem 0.65rem;
  border-radius: 8px;
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.9rem;
  border-left: 3px solid transparent;
  transition: background 0.15s var(--ease), color 0.15s var(--ease);
}
.doc-sidebar a:hover { background: var(--wash); color: var(--ink); }
.doc-sidebar a[aria-current="page"] {
  background: var(--accent-soft);
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 600;
}

.doc-main {
  padding: 2rem 1.5rem 3.5rem;
  max-width: 52rem;
}
.doc-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0 1.5rem;
  font-size: 0.9rem;
}
.doc-table th,
.doc-table td {
  border: 1px solid var(--line);
  padding: 0.55rem 0.7rem;
  text-align: left;
  vertical-align: top;
}
.doc-table th {
  background: var(--wash);
  color: var(--ink);
  font-weight: 600;
}
.doc-table td { color: var(--ink-soft); }
.doc-table code { font-size: 0.84em; }
.doc-main h1 {
  font-family: var(--display);
  font-size: clamp(1.7rem, 3vw, 2.2rem);
  letter-spacing: -0.02em;
  margin: 0 0 0.75rem;
  line-height: 1.2;
}
.doc-main .subtitle {
  color: var(--muted);
  margin: 0 0 1.75rem;
  font-size: 1.02rem;
}
.page-toc {
  margin: 0 0 1.5rem;
  padding: 0.85rem 1rem;
  background: var(--wash);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.page-toc-title {
  margin: 0 0 0.5rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}
.page-toc ol {
  margin: 0;
  padding-left: 1.15rem;
}
.page-toc li {
  margin: 0.25rem 0;
  font-size: 0.92rem;
}
.page-toc a {
  text-decoration: none;
  color: var(--ink-soft);
}
.page-toc a:hover {
  color: var(--accent);
  text-decoration: underline;
}
@media (min-width: 1100px) {
  .doc-main:has(.page-toc) {
    position: relative;
  }
}

.doc-main h2 {
  font-size: 1.2rem;
  margin: 2rem 0 0.75rem;
  scroll-margin-top: 5.5rem;
}
.doc-main h3 {
  font-size: 1.05rem;
  margin: 1.4rem 0 0.5rem;
  color: var(--ink-soft);
}
.doc-main p,
.doc-main li { color: var(--ink-soft); font-size: 0.97rem; }
.doc-main ul, .doc-main ol { padding-left: 1.2rem; }
.doc-main li { margin: 0.35rem 0; }

.step {
  background: var(--wash);
  border-left: 4px solid var(--accent);
  padding: 0.9rem 1.1rem;
  border-radius: 0 10px 10px 0;
  margin: 1rem 0;
  font-size: 0.93rem;
}

.flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  padding: 1rem;
  background: var(--wash);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin: 1.25rem 0;
}
.flow span {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.35rem 0.65rem;
  font-size: 0.85rem;
  font-weight: 500;
}
.flow i { color: var(--muted); font-style: normal; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.85rem;
  margin: 1.25rem 0;
}
.card-link {
  display: block;
  padding: 1.1rem 1.15rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-decoration: none;
  color: inherit;
  background: #fff;
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.card-link:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
  box-shadow: var(--shadow);
  transform: translateY(-2px);
  color: inherit;
}
.card-link strong {
  display: block;
  font-size: 1rem;
  margin-bottom: 0.25rem;
  color: var(--ink);
}
.card-link span { color: var(--muted); font-size: 0.88rem; }

.accordion details {
  border: 1px solid var(--line);
  border-radius: 10px;
  margin: 0.5rem 0;
  background: #fff;
  overflow: hidden;
}
.accordion summary {
  cursor: pointer;
  padding: 0.85rem 1rem;
  font-weight: 600;
  list-style: none;
  color: var(--ink);
}
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary::after {
  content: "+";
  float: right;
  color: var(--muted);
  font-weight: 400;
}
.accordion details[open] summary::after { content: "−"; }
.accordion details[open] summary { background: var(--wash); }
.accordion .acc-body { padding: 0 1rem 1rem; }

.term-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 0.85rem;
}
.term {
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: 10px;
  padding: 1rem;
  background: #fff;
}
.term strong { display: block; color: var(--accent); margin-bottom: 0.35rem; }
.term p { margin: 0; font-size: 0.9rem; }

pre, code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
code:not(pre code) {
  background: var(--wash);
  padding: 0.12rem 0.4rem;
  border-radius: 4px;
  font-size: 0.88em;
  color: var(--ink);
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: break-word;
}
.code-block {
  position: relative;
  margin: 1rem 0;
  max-width: 100%;
  min-width: 0;
}
.code-block pre {
  margin: 0;
  padding-right: 5.5rem;
}
pre {
  background: var(--ink);
  color: #e2e8f0;
  padding: 1rem 1.1rem;
  border-radius: 10px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  font-size: 0.8rem;
  line-height: 1.45;
  margin: 1rem 0;
  position: relative;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
}
.copy-btn {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  z-index: 2;
  font: inherit;
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid rgba(255,255,255,0.25);
  background: rgba(29, 78, 216, 0.85);
  color: #fff;
  border-radius: 8px;
  padding: 0.35rem 0.65rem;
  cursor: pointer;
  transition: background 0.15s var(--ease), transform 0.15s var(--ease);
}
.copy-btn:hover {
  background: #1d4ed8;
  transform: translateY(-1px);
}
.copy-btn.is-copied {
  background: #15803d;
  border-color: transparent;
}
.copy-btn.is-copy-fail {
  background: #b91c1c;
  border-color: transparent;
}

.docs-toast-host {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}
.docs-toast {
  min-width: 12rem;
  max-width: 22rem;
  padding: 0.7rem 0.95rem;
  border-radius: 10px;
  background: var(--ink);
  color: #fff;
  font-size: 0.88rem;
  font-weight: 600;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.22s var(--ease), transform 0.22s var(--ease);
}
.docs-toast.show {
  opacity: 1;
  transform: translateY(0);
}
.docs-toast.is-ok { background: #166534; }
.docs-toast.is-error { background: #991b1b; }

.endpoint {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.5rem 0.75rem;
  align-items: baseline;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.92rem;
}
.method {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 0.2rem 0.45rem;
  border-radius: 4px;
  color: #fff;
  background: #475569;
}
.method.get { background: #0f766e; }
.method.post { background: #1d4ed8; }
.method.put, .method.patch { background: #b45309; }
.method.delete { background: #b91c1c; }

.pager {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}
.pager a {
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 0.92rem;
  max-width: 45%;
}
.pager a:hover { color: var(--accent); }
.pager .next { text-align: right; margin-left: auto; }
.pager small { display: block; color: var(--muted); font-size: 0.75rem; }

/* Error pages */
.error-page {
  min-height: calc(100vh - var(--nav-h) - 5rem);
  display: grid;
  place-items: center;
  padding: 3rem 1.25rem;
  text-align: center;
  background:
    radial-gradient(700px 300px at 50% 0%, var(--accent-soft), transparent 70%),
    var(--surface);
}
.error-page .code {
  font-family: var(--display);
  font-size: clamp(4rem, 12vw, 7rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--ink);
  line-height: 1;
  margin: 0 0 0.5rem;
  animation: rise 0.7s var(--ease) both;
}
.error-page h1 {
  font-family: var(--display);
  font-size: 1.6rem;
  margin: 0 0 0.5rem;
}
.error-page p { color: var(--muted); max-width: 28rem; margin: 0 auto 1.5rem; }

.sidebar-toggle {
  display: none;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 8px;
  padding: 0.4rem 0.65rem;
  font: inherit;
  font-size: 0.88rem;
  cursor: pointer;
  white-space: nowrap;
}

.main-transition { animation: fade-in 0.28s var(--ease); }
@keyframes fade-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 900px) {
  :root { --nav-h: 3.25rem; }

  .site-nav {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    grid-template-areas:
      "toc brand menu"
      "search search search"
      "links links links";
    align-items: center;
    column-gap: 0.4rem;
    row-gap: 0;
    padding: 0 0.55rem;
    height: var(--nav-h);
  }
  .site-nav .sidebar-toggle,
  .site-nav .nav-slot {
    grid-area: toc;
    justify-self: start;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 4.6rem;
  }
  .site-nav .nav-slot {
    visibility: hidden;
    pointer-events: none;
  }
  .site-nav .brand {
    grid-area: brand;
    justify-self: center;
    order: unset;
  }
  .brand img {
    height: 32px;
    max-width: 96px;
  }
  .site-nav .nav-toggle {
    grid-area: menu;
    justify-self: end;
    display: inline-flex;
    order: unset;
    min-width: 4.6rem;
  }
  .site-nav .search-wrap {
    display: none;
    grid-area: search;
    order: unset;
    min-width: 0;
    width: 100%;
    margin: 0;
  }
  .site-nav .nav-links {
    display: none;
    grid-area: links;
    order: unset;
    margin-right: 0;
  }

  .site-nav.open {
    height: auto;
    min-height: var(--nav-h);
    padding-top: 0.4rem;
    padding-bottom: 0.55rem;
    row-gap: 0.4rem;
  }
  .site-nav.open .search-wrap {
    display: block;
  }
  .site-nav.open .nav-links {
    display: flex;
    flex-direction: column;
    width: 100%;
    background: var(--wash);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 0.35rem;
    align-items: stretch;
  }
  .site-nav.open .nav-links a {
    border-radius: 8px;
  }
  .search-results {
    left: 0;
    right: 0;
    width: auto;
  }

  .doc-shell {
    grid-template-columns: 1fr;
    width: 100%;
    max-width: 100%;
    min-width: 0;
  }
  .sidebar-toggle {
    display: inline-flex;
  }
  .sidebar-toggle.is-open {
    background: var(--accent-soft);
    border-color: color-mix(in srgb, var(--accent) 35%, var(--line));
    color: var(--accent);
  }
  .sidebar-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  .nav-backdrop {
    display: block;
    position: fixed;
    inset: var(--nav-h) 0 0 0;
    background: rgba(15, 23, 42, 0.35);
    z-index: 35;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s var(--ease);
  }
  .nav-backdrop.is-open {
    opacity: 1;
    pointer-events: auto;
  }
  .doc-sidebar {
    position: fixed;
    inset: var(--nav-h) auto 0 0;
    width: min(18rem, 86vw);
    transform: translateX(-105%);
    transition: transform 0.25s var(--ease);
    z-index: 45;
    box-shadow: var(--shadow);
  }
  .doc-sidebar.open { transform: translateX(0); }

  #main,
  .doc-main {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    padding: 1rem 0.75rem 3rem;
    overflow-x: clip;
    box-sizing: border-box;
  }
  .doc-main h1 { font-size: 1.4rem; }
  .doc-main .subtitle { font-size: 0.94rem; }
  .doc-main h2 { scroll-margin-top: 4.5rem; }
  .doc-main p,
  .doc-main li,
  .doc-main a {
    overflow-wrap: anywhere;
    word-break: break-word;
  }
  .doc-main ul,
  .doc-main ol {
    padding-left: 1.05rem;
  }
  .endpoint {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }
  .doc-table {
    display: block;
    width: 100%;
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  pre,
  .code-block pre,
  .play-pre {
    font-size: 0.72rem;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    word-break: break-word;
    overflow-x: visible;
    padding: 0.85rem 0.75rem;
    padding-right: 4.25rem;
  }
  .code-block .copy-btn {
    top: 0.35rem;
    right: 0.35rem;
    font-size: 0.7rem;
    padding: 0.25rem 0.45rem;
  }
  .flow {
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: 0.35rem;
    overflow: visible;
  }
  .pager {
    flex-wrap: wrap;
    gap: 0.75rem;
  }
  .pager a { max-width: 100%; }
  .page-toc { padding: 0.7rem 0.8rem; }
  .card-grid { grid-template-columns: 1fr; }
  .landing-hero {
    min-height: auto;
    padding: 2rem 1rem 3rem;
    justify-content: flex-start;
  }
  .landing-hero h1 { font-size: 1.65rem; }
  .landing-lead { font-size: 1rem; }
  .cta-row { width: 100%; }
  .cta-row .btn { width: 100%; }
  .site-footer {
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 1rem 0.75rem;
    font-size: 0.85rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}

/* Landing */
.landing-body {
  background:
    radial-gradient(1200px 600px at 10% -10%, #dbeafe 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #e2e8f0 0%, transparent 50%),
    var(--surface);
}
.landing-hero {
  min-height: calc(100vh - var(--nav-h) - 5rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 3rem 1.25rem 4rem;
  animation: fadeUp 0.7s var(--ease) both;
}
.landing-hero h1 {
  font-family: var(--display);
  font-size: clamp(2rem, 4vw, 3rem);
  margin: 0 0 0.75rem;
  letter-spacing: -0.02em;
}
.landing-lead {
  max-width: 36rem;
  color: var(--ink-soft);
  margin: 0 0 1.5rem;
  font-size: 1.1rem;
}
.landing-meta {
  margin-top: 1.25rem;
  color: var(--muted);
  font-size: 0.95rem;
}
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.15rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: inherit;
  transition: transform 0.2s var(--ease), background 0.2s var(--ease), color 0.2s var(--ease);
}
.btn:hover { transform: translateY(-1px); }
.btn-accent {
  background: var(--accent);
  color: #fff;
}
.btn-accent:hover { background: var(--accent-deep); color: #fff; }
.btn-outline {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-tiny { padding: 0.35rem 0.65rem; font-size: 0.8rem; margin-top: 0.35rem; }

/* Playground */
.play-card {
  margin: 1.5rem 0;
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--wash), var(--surface));
  box-shadow: var(--shadow);
  animation: fadeUp 0.5s var(--ease) both;
}
.play-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}
.play-head h2 { margin: 0; font-size: 1.15rem; }
.play-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}
.play-card label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink-soft);
}
.play-card input,
.play-card select {
  font: inherit;
  font-weight: 400;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
}
.play-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}
.play-pre {
  margin: 0.75rem 0;
  padding: 0.9rem 1rem;
  background: #0f172a;
  color: #e2e8f0;
  border-radius: 8px;
  overflow: auto;
  max-height: 22rem;
  font-size: 0.82rem;
}
.play-status { font-size: 0.9rem; margin: 0.5rem 0 0; }
.play-status.is-ok { color: #15803d; }
.play-status.is-error { color: #b91c1c; }
.play-meta { font-size: 0.85rem; color: var(--muted); }
.badge {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--wash);
  color: var(--ink-soft);
}
.badge.is-ok { background: #dcfce7; color: #166534; }
.badge.is-error { background: #fee2e2; color: #991b1b; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Prefs / theme / font */
html[data-theme="dark"] {
  --ink: #e2e8f0;
  --ink-soft: #cbd5e1;
  --muted: #94a3b8;
  --line: #334155;
  --surface: #0b1220;
  --wash: #111827;
  --accent: #60a5fa;
  --accent-soft: #1e293b;
  --accent-deep: #93c5fd;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  color-scheme: dark;
}
html[data-theme="dark"] .site-nav,
html[data-theme="dark"] .doc-sidebar,
html[data-theme="dark"] .search-results,
html[data-theme="dark"] .page-toc,
html[data-theme="dark"] .nav-toggle,
html[data-theme="dark"] .sidebar-toggle,
html[data-theme="dark"] .sidebar-close,
html[data-theme="dark"] .prefs-btn {
  background: #0f172a;
}
html[data-theme="dark"] .brand img {
  background: #fff;
  border-radius: 6px;
}
html[data-font="lg"] { font-size: 112%; }
html[data-font="xl"] { font-size: 124%; }

.nav-prefs {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
}
.prefs-row { display: flex; flex-wrap: wrap; gap: 0.35rem; }
@media (min-width: 901px) {
  .nav-prefs { margin-left: 0.35rem; }
  .nav-prefs .prefs-btn { padding: 0.35rem 0.55rem; font-size: 0.8rem; }
}
@media (max-width: 900px) {
  .nav-prefs {
    margin: 0.35rem 0 0;
    padding: 0.35rem 0 0;
    border-top: 1px solid var(--line);
    width: 100%;
  }
}
.prefs-btn {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink-soft);
  border-radius: 8px;
  padding: 0.4rem 0.65rem;
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}
.prefs-btn:hover { background: var(--accent-soft); color: var(--accent); }

.to-top {
  position: fixed;
  right: 0.85rem;
  bottom: 0.85rem;
  z-index: 60;
  border: 1px solid var(--line);
  background: var(--accent);
  color: #fff;
  border-radius: 999px;
  padding: 0.55rem 0.9rem;
  font: inherit;
  font-size: 0.85rem;
  font-weight: 700;
  box-shadow: var(--shadow);
  cursor: pointer;
}
.to-top[hidden] { display: none !important; }

.doc-feedback {
  max-width: 52rem;
  margin: 0 auto 2rem;
  padding: 1rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--wash);
}
.doc-shell + .doc-feedback,
.doc-feedback {
  margin-left: 1rem;
  margin-right: 1rem;
}
@media (min-width: 901px) {
  .doc-feedback { margin-left: calc(16.5rem + 1.5rem); margin-right: 1.5rem; }
}
.doc-feedback-q { margin: 0 0 0.65rem; font-weight: 600; }
.doc-feedback-actions { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.doc-feedback-thanks { margin: 0.5rem 0 0; color: var(--muted); }

.viz-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
  margin: 1.25rem 0 1.75rem;
}
.viz-card { margin: 0; }
.viz-card figcaption {
  margin-top: 0.45rem;
  font-size: 0.88rem;
  color: var(--muted);
  font-weight: 600;
}
.viz-ui {
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  background: var(--surface);
  min-height: 8.5rem;
}
.viz-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.65rem;
  background: var(--wash);
  border-bottom: 1px solid var(--line);
  font-size: 0.72rem;
}
.viz-pill {
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 999px;
  padding: 0.15rem 0.5rem;
  font-weight: 600;
}
.viz-dot {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--accent);
}
.viz-side {
  float: left;
  width: 4.2rem;
  min-height: 5.5rem;
  background: var(--wash);
  border-right: 1px solid var(--line);
  padding: 0.5rem 0.35rem;
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--muted);
}
.viz-body { padding: 0.7rem 0.75rem; font-size: 0.85rem; }
.viz-body p { margin: 0.35rem 0 0; color: var(--ink-soft); }
.viz-btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  border-radius: 6px;
  padding: 0.1rem 0.4rem;
  font-size: 0.75rem;
  font-weight: 700;
}

.checklist {
  display: grid;
  gap: 0.55rem;
  margin: 1rem 0 1.5rem;
}
.checklist h2 { margin: 1.25rem 0 0.35rem; }
.checklist label {
  display: flex;
  gap: 0.55rem;
  align-items: flex-start;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  font-size: 0.95rem;
}
.checklist input { margin-top: 0.2rem; flex: 0 0 auto; }
.print-toc ol { padding-left: 1.2rem; }
.print-toc li { margin: 0.35rem 0; }

@media (max-width: 900px) {
  .viz-steps { grid-template-columns: 1fr; }
  .to-top { right: 0.65rem; bottom: 0.65rem; padding: 0.5rem 0.75rem; }
  .doc-feedback { margin-left: 0.75rem; margin-right: 0.75rem; }
  .nav-prefs { width: 100%; }
  .prefs-row { width: 100%; }
  .prefs-btn { flex: 1 1 auto; text-align: center; }
}

@media print {
  .site-nav,
  .nav-backdrop,
  .doc-sidebar,
  .sidebar-toggle,
  .nav-toggle,
  .to-top,
  .doc-feedback,
  .page-toc,
  .copy-btn,
  .no-print,
  .pager { display: none !important; }
  .doc-shell { display: block; }
  .doc-main { max-width: none; padding: 0; }
  body { background: #fff; color: #000; }
  a { color: #000; text-decoration: none; }
  .checklist label { break-inside: avoid; }
}