:root {
  color-scheme: light;
  --page: #f3f7f5;
  --paper: #ffffff;
  --ink: #18252b;
  --muted: #5c6c72;
  --line: #d8e3e3;
  --accent: #1f6f78;
  --accent-dark: #15535b;
  --warm: #d46f4f;
  --soft: #e7f1ef;
  --pale-warm: #fff1eb;
  --shadow: 0 14px 32px rgba(24, 37, 43, 0.09);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #172126;
  --paper: #202d32;
  --ink: #f1f6f5;
  --muted: #b7c5c7;
  --line: #3d5055;
  --accent: #84cbd0;
  --accent-dark: #b0e2e3;
  --warm: #f29a78;
  --soft: #263b3d;
  --pale-warm: #3c2c29;
  --shadow: 0 16px 36px rgba(0, 0, 0, 0.25);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

a { color: inherit; }

h1, h2, h3, p { margin-top: 0; }

.acfaa-shell {
  width: min(100% - 32px, 1080px);
  margin: 0 auto;
  padding: 18px 0 34px;
}

.acfaa-header,
.acfaa-nav,
.acfaa-actions,
.acfaa-meta,
.acfaa-footer,
.acfaa-share-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.acfaa-header {
  justify-content: space-between;
  padding-bottom: 22px;
}

.acfaa-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 780;
  text-decoration: none;
}

.acfaa-brand img {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
}

.acfaa-nav { justify-content: flex-end; }

.acfaa-nav a,
.acfaa-small-button {
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--paper);
  color: var(--ink);
  padding: 8px 11px;
  font: inherit;
  font-size: 13px;
  text-decoration: none;
}

.acfaa-small-button { cursor: pointer; }

.acfaa-nav a:hover,
.acfaa-small-button:hover,
.acfaa-nav a:focus-visible,
.acfaa-small-button:focus-visible {
  border-color: var(--accent);
  color: var(--accent-dark);
}

.acfaa-loading,
.acfaa-error {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
}

.acfaa-error { color: var(--warm); }

.acfaa-hero,
.acfaa-session-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(250px, 330px);
  gap: 28px;
  align-items: center;
  padding: clamp(24px, 5vw, 52px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.acfaa-eyebrow {
  margin-bottom: 10px;
  color: var(--warm);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1 {
  max-width: 760px;
  margin-bottom: 14px;
  font-size: clamp(34px, 6vw, 64px);
  line-height: 1.02;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 10px;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.15;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 7px;
  line-height: 1.2;
  letter-spacing: 0;
}

.acfaa-lead {
  max-width: 720px;
  color: var(--muted);
  font-size: 18px;
}

.acfaa-hero-note {
  margin: 0;
  border-left: 4px solid var(--warm);
  border-radius: 0 6px 6px 0;
  background: var(--pale-warm);
  padding: 14px 16px;
  color: var(--ink);
}

.acfaa-quick-start {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
  padding: 20px;
}

.acfaa-quick-start h2 { font-size: 22px; }

.acfaa-quick-start ol {
  display: grid;
  gap: 10px;
  margin: 0;
  padding-left: 22px;
}

.acfaa-section { padding-top: 32px; }

.acfaa-section-heading {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: end;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.acfaa-section-heading p,
.acfaa-session-card p,
.acfaa-material-card p,
.acfaa-muted { color: var(--muted); }

.acfaa-session-list,
.acfaa-material-grid,
.acfaa-takeaway-grid {
  display: grid;
  gap: 12px;
}

.acfaa-session-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.acfaa-session-card,
.acfaa-material-card,
.acfaa-takeaway,
.acfaa-boundary,
.acfaa-share-box {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
}

.acfaa-session-card {
  display: grid;
  gap: 14px;
  padding: 20px;
}

.acfaa-session-top {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: start;
}

.acfaa-session-number {
  display: inline-grid;
  place-items: center;
  min-width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--soft);
  color: var(--accent-dark);
  font-weight: 800;
}

.acfaa-status {
  border-radius: 4px;
  background: var(--pale-warm);
  color: var(--warm);
  font-size: 12px;
  font-weight: 750;
  padding: 5px 8px;
}

.acfaa-session-card h3 a { text-decoration: none; }

.acfaa-session-card h3 a:hover,
.acfaa-session-card h3 a:focus-visible { color: var(--accent); }

.acfaa-meta { color: var(--muted); font-size: 13px; }

.acfaa-primary,
.acfaa-secondary,
.acfaa-text-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  border: 1px solid var(--accent);
  border-radius: 5px;
  padding: 10px 15px;
  font-weight: 760;
  text-decoration: none;
}

.acfaa-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.acfaa-primary:hover,
.acfaa-primary:focus-visible { background: var(--accent-dark); }

.acfaa-secondary,
.acfaa-text-button {
  background: transparent;
  color: var(--accent-dark);
  cursor: pointer;
  font: inherit;
}

.acfaa-secondary:hover,
.acfaa-secondary:focus-visible,
.acfaa-text-button:hover,
.acfaa-text-button:focus-visible { background: var(--soft); }

.acfaa-back { margin-bottom: 18px; }

.acfaa-session-hero { grid-template-columns: minmax(0, 1fr) 280px; }

.acfaa-session-aside {
  display: grid;
  gap: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
  padding: 20px;
}

.acfaa-session-image {
  display: block;
  width: 100%;
  aspect-ratio: 1.8 / 1;
  border-radius: 6px;
  object-fit: cover;
}

.acfaa-session-facts h2 { margin-bottom: 10px; }

.acfaa-session-aside h2 { font-size: 22px; }

.acfaa-session-aside dl { margin: 0; }

.acfaa-session-aside dt {
  margin-top: 12px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 750;
  text-transform: uppercase;
}

.acfaa-session-aside dt:first-child { margin-top: 0; }

.acfaa-session-aside dd { margin: 2px 0 0; font-weight: 700; }

.acfaa-material-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.acfaa-material-card {
  display: grid;
  align-content: start;
  gap: 10px;
  padding: 18px;
}

.acfaa-material-icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 6px;
  background: var(--pale-warm);
  color: var(--warm);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0;
}

.acfaa-takeaway-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.acfaa-takeaway { padding: 18px; }

.acfaa-takeaway strong { color: var(--accent-dark); }

.acfaa-share-box {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  padding: 18px;
}

.acfaa-share-box p { margin: 0; color: var(--muted); }

.acfaa-boundary {
  background: var(--soft);
  padding: 20px;
}

.acfaa-boundary p { max-width: 850px; margin-bottom: 0; }

.acfaa-footer {
  justify-content: space-between;
  margin-top: 32px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
}

.acfaa-footer a { color: var(--accent-dark); text-decoration: none; }

.acfaa-sample-banner {
  margin: 18px 0 0;
  border: 1px solid #e6c9ba;
  border-radius: 6px;
  background: var(--pale-warm);
  color: var(--ink);
  padding: 12px 14px;
  font-size: 14px;
}

@media (max-width: 820px) {
  .acfaa-hero,
  .acfaa-session-hero,
  .acfaa-session-list,
  .acfaa-material-grid,
  .acfaa-takeaway-grid { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .acfaa-shell { width: min(100% - 24px, 1080px); padding-top: 12px; }
  .acfaa-header { align-items: flex-start; }
  .acfaa-nav { justify-content: flex-start; }
  .acfaa-hero,
  .acfaa-session-hero { padding: 22px 18px; }
  h1 { font-size: 40px; }
  .acfaa-share-box { align-items: stretch; flex-direction: column; }
  .acfaa-primary,
  .acfaa-secondary,
  .acfaa-text-button { width: 100%; }
}

@media print {
  .acfaa-header,
  .acfaa-footer,
  .acfaa-share-box,
  .acfaa-back,
  .acfaa-actions { display: none !important; }
  body { background: #fff; }
  .acfaa-shell { width: 100%; padding: 0; }
  .acfaa-session-hero,
  .acfaa-material-card,
  .acfaa-takeaway,
  .acfaa-boundary { box-shadow: none; }
}