/* ============================================================================
 * Gut-Brain Essentials — app styles (structure & layout; colors live in brand.css)
 * ==========================================================================*/
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--sand);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary-dark); }
button { font-family: inherit; }

/* ---- Top bar -------------------------------------------------------------*/
.appbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 12px;
  padding: 10px 16px;
  background: var(--primary);
  color: #fff;
  box-shadow: var(--shadow);
}
.appbar .brand { display: flex; flex-direction: column; line-height: 1.15; }
.appbar .brand b { font-size: 1.05rem; letter-spacing: .2px; font-family: var(--font-head); }
.appbar .brand span { font-size: .72rem; opacity: .85; }
.appbar .logo {
  width: 34px; height: 34px; border-radius: 9px; flex: 0 0 auto;
  background: #fff; color: var(--primary);
  display: grid; place-items: center; font-weight: 800; font-size: .95rem;
}
.appbar .spacer { flex: 1; }
.appbar button {
  border: 0; cursor: pointer; border-radius: 999px;
  padding: 7px 14px; font-weight: 600; font-size: .85rem;
}
.btn-safety { background: #fff; color: var(--warn); }
.btn-safety:hover { background: #ffecec; }
.btn-ghost { background: rgba(255,255,255,.16); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,.28); }

/* ---- Layout --------------------------------------------------------------*/
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 22px 16px 80px; }
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 22px; margin-bottom: 18px;
}
h1, h2, h3 { line-height: 1.25; font-family: var(--font-head); }
h1 { font-size: 1.55rem; margin: 0 0 6px; }
h2 { font-size: 1.2rem; margin: 0 0 10px; }
.muted { color: var(--muted); }
.goal { color: var(--primary-dark); font-weight: 600; }
.pill {
  display: inline-block; font-size: .72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .5px;
  color: var(--primary-dark); background: var(--primary-soft);
  padding: 3px 10px; border-radius: 999px;
}

/* ---- Buttons -------------------------------------------------------------*/
.btn {
  display: inline-flex; align-items: center; gap: 8px; justify-content: center;
  border: 0; cursor: pointer; border-radius: var(--radius-sm);
  padding: 11px 18px; font-weight: 700; font-size: .95rem;
  background: var(--accent); color: #fff;
}
.btn:hover { background: var(--accent-dark); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.secondary { background: var(--primary); }
.btn.secondary:hover { background: var(--primary-dark); }
.btn.outline { background: transparent; color: var(--primary-dark); border: 1.5px solid var(--primary); }
.btn.outline:hover { background: var(--primary-soft); }
.btn.block { width: 100%; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.row.between { justify-content: space-between; }

/* ---- Home / module cards -------------------------------------------------*/
.module-card { cursor: pointer; transition: transform .08s ease, box-shadow .12s ease; }
.module-card:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(34,49,47,.12); }
.module-card .num {
  width: 30px; height: 30px; border-radius: 8px; flex: 0 0 auto;
  background: var(--primary); color: #fff; display: grid; place-items: center; font-weight: 800;
}
.status {
  font-size: .76rem; font-weight: 700; padding: 3px 10px; border-radius: 999px;
}
.status.done { background: #e3f1ea; color: var(--good); }
.status.inprogress { background: #fdeede; color: var(--accent-dark); }
.status.todo { background: #eee9dd; color: var(--muted); }

/* ---- Progress bar --------------------------------------------------------*/
.progress { height: 9px; background: var(--line); border-radius: 999px; overflow: hidden; }
.progress > i { display: block; height: 100%; background: var(--primary); transition: width .3s ease; }

/* ---- Steps ---------------------------------------------------------------*/
.step-body { white-space: pre-wrap; }
.stepdots { display: flex; gap: 6px; flex-wrap: wrap; margin: 4px 0 0; }
.stepdots i { width: 9px; height: 9px; border-radius: 999px; background: var(--line); }
.stepdots i.active { background: var(--accent); }
.stepdots i.done { background: var(--primary); }

/* ---- Forms / trackers ----------------------------------------------------*/
label { font-weight: 600; display: block; margin: 14px 0 6px; }
input[type=text], input[type=email], input[type=password], textarea, select {
  width: 100%; padding: 11px 12px; border: 1px solid var(--line);
  border-radius: var(--radius-sm); font-size: 1rem; font-family: inherit; background: #fff; color: var(--ink);
}
textarea { min-height: 70px; resize: vertical; }
.scale { display: flex; gap: 6px; flex-wrap: wrap; }
.scale button {
  width: 40px; height: 40px; border-radius: 8px; border: 1px solid var(--line);
  background: #fff; cursor: pointer; font-weight: 700; color: var(--ink);
}
.scale button.sel { background: var(--primary); color: #fff; border-color: var(--primary); }
.scale-labels { display: flex; justify-content: space-between; font-size: .76rem; color: var(--muted); margin-top: 4px; }
.check {
  display: flex; align-items: flex-start; gap: 10px; padding: 10px 0;
  border-bottom: 1px solid var(--line); cursor: pointer;
}
.check:last-child { border-bottom: 0; }
.check input { margin-top: 4px; width: 18px; height: 18px; flex: 0 0 auto; }

/* ---- Check-in history ----------------------------------------------------*/
.entry { display: grid; grid-template-columns: 1fr auto auto; gap: 10px; align-items: center;
  padding: 10px 0; border-bottom: 1px solid var(--line); font-size: .92rem; }
.entry:last-child { border-bottom: 0; }
.entry .date { color: var(--muted); }
.tag { font-size: .78rem; font-weight: 700; padding: 2px 9px; border-radius: 999px; background: var(--primary-soft); color: var(--primary-dark); }
.tag.warn { background: #fbe6e0; color: var(--warn); }

/* ---- Resources -----------------------------------------------------------*/
.resource { display: flex; gap: 12px; align-items: flex-start; padding: 12px 0; border-bottom: 1px solid var(--line); }
.resource:last-child { border-bottom: 0; }
.resource .rt { font-size: .7rem; font-weight: 800; text-transform: uppercase; letter-spacing: .5px;
  color: var(--primary-dark); background: var(--primary-soft); padding: 3px 8px; border-radius: 6px; flex: 0 0 auto; }

/* ---- Auth ----------------------------------------------------------------*/
.auth-wrap { max-width: 420px; margin: 8vh auto; padding: 0 16px; }
.auth-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 26px; }
.auth-card h1 { text-align: center; }
.auth-sub { text-align: center; color: var(--muted); margin: 0 0 18px; }
.tabs { display: flex; background: var(--primary-soft); border-radius: 999px; padding: 4px; margin-bottom: 18px; }
.tabs button { flex: 1; border: 0; background: transparent; padding: 9px; border-radius: 999px; cursor: pointer; font-weight: 700; color: var(--primary-dark); }
.tabs button.active { background: #fff; box-shadow: var(--shadow); }
.demo-hint { font-size: .8rem; color: var(--muted); text-align: center; margin-top: 14px; }
.error { color: var(--warn); font-size: .88rem; margin-top: 8px; min-height: 1.1em; }

/* ---- Modal (safety) ------------------------------------------------------*/
.modal-bg { position: fixed; inset: 0; background: rgba(20,28,27,.55); z-index: 100; display: grid; place-items: center; padding: 18px; }
.modal { background: #fff; border-radius: var(--radius); max-width: 520px; width: 100%; padding: 24px; box-shadow: 0 20px 60px rgba(0,0,0,.3); max-height: 90vh; overflow: auto; }
.modal h2 { color: var(--warn); }
.crisis-item { border-left: 4px solid var(--warn); padding: 8px 0 8px 12px; margin: 12px 0; }
.crisis-item b { display: block; }

/* ---- Footer / misc -------------------------------------------------------*/
.footer { text-align: center; color: var(--muted); font-size: .78rem; margin-top: 28px; line-height: 1.5; }
.back { background: none; border: 0; color: var(--primary-dark); cursor: pointer; font-weight: 700; padding: 0; margin-bottom: 12px; }
.admin-row { display: grid; grid-template-columns: 1fr auto; gap: 10px; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--line); }
.admin-row:last-child { border-bottom: 0; }
.note { background: var(--primary-soft); border-radius: var(--radius-sm); padding: 12px 14px; font-size: .9rem; }
.saved-flash { color: var(--good); font-weight: 700; font-size: .85rem; }

/* ---- Engaging content blocks --------------------------------------------*/
.callout { padding: 14px 16px; margin: 16px 0 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.callout-label { display: flex; align-items: center; gap: 6px; font-size: .7rem; font-weight: 800; text-transform: uppercase; letter-spacing: .6px; margin-bottom: 5px; }
.callout-icon { width: 15px; height: 15px; flex: 0 0 auto; }
.callout-body { color: var(--ink); }

/* idea — core teaching point (green, left bar) */
.callout.idea { background: var(--primary-soft); border-left: 4px solid var(--primary); }
.callout.idea .callout-label { color: var(--primary-dark); }

/* hopeful — encouragement (solid emerald banner) */
.callout.hopeful { background: var(--primary); border-radius: var(--radius-sm); }
.callout.hopeful .callout-label { color: #bbf7d0; }
.callout.hopeful .callout-body { color: #fff; }

/* fact — striking idea (dark banner, tangerine label) */
.callout.fact { background: var(--ink); border-radius: var(--radius-sm); }
.callout.fact .callout-label { color: var(--accent); }
.callout.fact .callout-body { color: #eef2ee; }

/* caution — check with your medical team (red, left bar) */
.callout.caution { background: #fdeceb; border-left: 4px solid var(--warn); }
.callout.caution .callout-label { color: var(--warn); }

/* picture — analogy / imagery (neutral, italic body) */
.callout.picture { background: #f3f1ea; border-left: 4px solid #cbc2af; }
.callout.picture .callout-label { color: #8a7f66; }
.callout.picture .callout-body { font-style: italic; }

/* pause — a calming beat (centered band) */
.callout.pause { background: #eef4f1; border-radius: var(--radius-sm); text-align: center; }
.callout.pause .callout-label { justify-content: center; color: var(--primary-dark); }

.stat { display: flex; align-items: baseline; gap: 12px; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius-sm); padding: 14px 16px; margin: 16px 0 0; }
.stat-num { font-family: var(--font-head); font-size: 2.1rem; font-weight: 700; color: var(--accent); line-height: 1; flex: 0 0 auto; }
.stat-label { color: var(--muted); font-size: .92rem; }

.blocklist { margin: 16px 0 0; }
.blocklist-title { font-weight: 600; margin-bottom: 6px; }
.blocklist ul { margin: 0; padding-left: 0; list-style: none; }
.blocklist li { position: relative; padding: 4px 0 4px 22px; }
.blocklist li::before { content: ""; position: absolute; left: 4px; top: 13px; width: 7px; height: 7px; border-radius: 999px; background: var(--primary); }

.pullquote { margin: 16px 0 0; padding: 4px 0 4px 16px; border-left: 4px solid var(--accent); font-style: italic; color: var(--ink); }
.pullquote cite { display: block; font-style: normal; font-size: .85rem; color: var(--muted); margin-top: 6px; }

.reveal { background: #fff; border: 1px dashed var(--primary); border-radius: var(--radius-sm); padding: 14px 16px; margin: 16px 0 0; }
.reveal-q { font-weight: 600; }
.reveal-btn { margin-top: 10px; background: transparent; border: 1.5px solid var(--primary); color: var(--primary-dark);
  border-radius: 999px; padding: 7px 16px; font-weight: 700; cursor: pointer; font-size: .85rem; }
.reveal-btn:hover { background: var(--primary-soft); }
.reveal-a { margin-top: 10px; color: var(--ink); }

.poll { margin: 16px 0 0; }
.poll-q { font-weight: 600; margin-bottom: 10px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { border: 1.5px solid var(--line); background: #fff; color: var(--ink); border-radius: 999px;
  padding: 9px 14px; cursor: pointer; font-size: .9rem; font-weight: 600; }
.chip:hover { border-color: var(--primary); }
.chip.sel { background: var(--primary); color: #fff; border-color: var(--primary); }
.poll-resp { margin-top: 12px; background: var(--accent-soft); border-left: 4px solid var(--accent); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; padding: 12px 14px; color: var(--ink); font-size: .92rem; }
.poll-resp::before { content: "✓ "; color: var(--accent-dark); font-weight: 800; }

.twoway { display: flex; gap: 12px; align-items: stretch; margin: 16px 0 0; }
.tw-side { flex: 1; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 14px; }
.tw-head { font-family: var(--font-head); font-weight: 700; color: var(--primary-dark); margin-bottom: 8px; }
.tw-side ul { margin: 0; padding-left: 18px; }
.tw-side li { padding: 3px 0; font-size: .9rem; }
.tw-mid { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; flex: 0 0 auto; }
.tw-badge { background: var(--accent); color: #fff; font-size: .7rem; font-weight: 800; padding: 3px 8px; border-radius: 999px; margin-bottom: 4px; }
.tw-up, .tw-down { font-size: 1.4rem; color: var(--accent); line-height: .85; font-weight: 700; }
.tw-up { animation: twpulse 1.6s ease-in-out infinite; }
.tw-down { animation: twpulse 1.6s ease-in-out infinite; animation-delay: .8s; }
@keyframes twpulse { 0%, 100% { opacity: .25; transform: translateY(0); } 50% { opacity: 1; transform: translateY(-3px); } }

/* ---- Scenario / vignette -------------------------------------------------*/
.scenario { display: flex; gap: 12px; background: #fff; border: 1px solid var(--line); border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0; padding: 14px 16px; margin: 16px 0 0; }
.scenario-av { width: 38px; height: 38px; border-radius: 999px; background: var(--accent); color: #fff;
  display: grid; place-items: center; font-weight: 800; flex: 0 0 auto; font-family: var(--font-head); }
.scenario-name { font-weight: 700; font-family: var(--font-head); margin-bottom: 2px; }
.scenario-body { font-style: italic; color: var(--ink); }

/* ---- Personalized takeaway ("you / personal", orange family) -------------*/
.takeaway { background: var(--accent-soft); border-left: 4px solid var(--accent); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; padding: 14px 16px; margin: 16px 0 0; }
.takeaway-label { font-size: .7rem; font-weight: 800; text-transform: uppercase; letter-spacing: .6px; color: var(--accent-dark); margin-bottom: 4px; }

/* ---- Sort interaction ----------------------------------------------------*/
.sort { margin: 16px 0 0; }
.sort-q { font-weight: 600; margin-bottom: 10px; }
.sort-pool { display: flex; flex-wrap: wrap; gap: 8px; min-height: 20px; margin-bottom: 14px; }
.sort-item { border: 1.5px solid var(--accent); background: #fff; color: var(--ink); border-radius: 999px;
  padding: 8px 14px; cursor: grab; font-size: .88rem; font-weight: 600; font-family: inherit; }
.sort-item.picked { background: var(--accent); color: #fff; }
.sort-empty { font-size: .85rem; padding: 4px 0; }
.sort-buckets { display: flex; gap: 12px; }
.sort-bucket { flex: 1; background: var(--sand); border: 1.5px dashed var(--line); border-radius: var(--radius-sm); padding: 12px; min-height: 96px; }
.sort-bucket.over { border-color: var(--accent); background: #fff; }
.sort-bucket-head { font-family: var(--font-head); font-weight: 700; color: var(--primary-dark); margin-bottom: 8px; font-size: .9rem; }
.sort-placed { display: block; width: 100%; text-align: left; border: 1px solid var(--line); background: #fff; color: var(--ink);
  border-radius: 8px; padding: 8px 10px; margin-bottom: 6px; cursor: pointer; font-size: .85rem; font-family: inherit; }
.sort-placed.correct { background: #e3f1ea; border-color: var(--good); }
.sort-placed.wrong { background: #fbe6e0; border-color: var(--warn); }
.sort-fb { display: none; margin-top: 12px; font-size: .9rem; border-radius: var(--radius-sm); padding: 10px 12px; }
.sort-fb.good { background: #e3f1ea; color: #18684c; }
.sort-fb.bad { background: #fbe6e0; color: var(--warn); }

/* ---- Compare toggle ------------------------------------------------------*/
.compare { margin: 16px 0 0; }
.compare-q { font-weight: 600; margin-bottom: 10px; }
.compare-tabs { display: flex; gap: 8px; margin-bottom: 12px; }
.compare-tab { flex: 1; border: 1.5px solid var(--line); background: #fff; color: var(--ink); border-radius: 999px;
  padding: 9px 12px; cursor: pointer; font-weight: 700; font-family: inherit; font-size: .9rem; }
.compare-tab.sel { background: var(--ink); color: #fff; border-color: var(--ink); }
.compare-panel { border: 1px solid var(--line); border-left: 4px solid var(--line); background: #fff; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; padding: 14px 16px; }
.compare-panel.accel { background: var(--accent-soft); border-color: var(--accent); }
.compare-panel.calm { background: var(--primary-soft); border-color: var(--primary); }
.compare-head { font-family: var(--font-head); font-weight: 700; margin-bottom: 8px; }
.compare-panel ul { margin: 0; padding-left: 18px; }
.compare-panel li { padding: 3px 0; font-size: .92rem; }

/* ---- Breathing pacer -----------------------------------------------------*/
.breath { margin: 16px 0 0; text-align: center; }
.breath-stage { display: flex; justify-content: center; align-items: center; height: 190px; }
.breath-circle { width: 120px; height: 120px; border-radius: 50%; background: var(--primary-soft); border: 3px solid var(--primary);
  display: flex; align-items: center; justify-content: center; transform: scale(.55); transition: transform 1s ease-in-out; }
.breath-circle.on { background: var(--primary); }
.breath-label { font-family: var(--font-head); font-weight: 700; color: var(--primary-dark); font-size: .95rem; }
.breath-circle.on .breath-label { color: #fff; }
.breath-meta { font-size: .82rem; margin: 4px 0 12px; }

@media (prefers-reduced-motion: reduce) { .tw-up, .tw-down { animation: none; opacity: .85; } .breath-circle { transition-duration: .3s; } }

/* ==========================================================================
 * Public marketing site (home + about)
 * ========================================================================== */
.site-header { position: sticky; top: 0; z-index: 50; background: #fff; border-bottom: 1px solid var(--line); }
.site-header-inner { max-width: 960px; margin: 0 auto; padding: 12px 20px; display: flex; align-items: center; gap: 18px; }
.site-brand { display: flex; align-items: center; gap: 10px; text-decoration: none; cursor: pointer; }
.site-brand-name { font-family: var(--font-head); font-weight: 700; color: var(--ink); font-size: 1.05rem; }
.site-nav { display: flex; gap: 18px; margin-left: 8px; }
.site-nav a { color: var(--muted); text-decoration: none; font-weight: 600; cursor: pointer; font-size: .95rem; }
.site-nav a:hover, .site-nav a.active { color: var(--primary-dark); }
.site-actions { margin-left: auto; display: flex; gap: 8px; }
.site-actions .btn { padding: 9px 14px; font-size: .9rem; }

.site-wrap { max-width: 960px; margin: 0 auto; padding: 0 20px; }
.site-page { padding-bottom: 40px; }

.hero { text-align: center; padding: 64px 0 40px; }
.hero-eyebrow { display: inline-block; font-size: .75rem; font-weight: 800; text-transform: uppercase; letter-spacing: .8px;
  color: var(--primary-dark); background: var(--primary-soft); padding: 5px 14px; border-radius: 999px; }
.hero-title { font-family: var(--font-head); font-size: 2.6rem; line-height: 1.12; margin: 18px auto 14px; max-width: 760px; }
.hero-sub { color: var(--muted); font-size: 1.1rem; max-width: 600px; margin: 0 auto 26px; line-height: 1.6; }
.hero-cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.section { padding: 36px 0; }
.section-title { font-family: var(--font-head); text-align: center; font-size: 1.7rem; margin: 0 0 24px; }
.section-title.left { text-align: left; }

.band { background: var(--primary-soft); border-radius: var(--radius); padding: 28px; text-align: center; margin: 24px 0; }
.band .section-title { margin-bottom: 10px; }
.band-body { color: var(--ink); max-width: 640px; margin: 0 auto; }

.learn-grid, .how-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.learn-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 20px; cursor: pointer; transition: transform .08s ease, box-shadow .12s ease; }
.learn-card:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(80,40,10,.1); }
.learn-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.learn-num { width: 30px; height: 30px; border-radius: 8px; background: var(--primary); color: #fff; display: grid; place-items: center; font-weight: 800; font-family: var(--font-head); }
.free-badge { font-size: .7rem; font-weight: 800; text-transform: uppercase; letter-spacing: .5px; color: #fff; background: var(--accent); padding: 4px 10px; border-radius: 999px; }
.learn-card h3 { font-family: var(--font-head); margin: 0 0 8px; font-size: 1.15rem; }
.learn-card p { color: var(--muted); margin: 0 0 12px; font-size: .92rem; }
.learn-meta { font-size: .8rem; color: var(--muted); font-weight: 600; }

.how-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.how-card h3 { font-family: var(--font-head); margin: 0 0 8px; font-size: 1.05rem; color: var(--primary-dark); }
.how-card p { color: var(--muted); margin: 0; font-size: .92rem; }

.instructor { display: flex; gap: 20px; align-items: center; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px; margin: 12px 0 36px; }
.instructor-av { width: 76px; height: 76px; border-radius: 50%; background: var(--accent); color: #fff;
  display: grid; place-items: center; font-family: var(--font-head); font-weight: 800; font-size: 1.5rem; flex: 0 0 auto; }
.instructor-label { font-size: .7rem; font-weight: 800; text-transform: uppercase; letter-spacing: .6px; color: var(--accent-dark); }
.instructor-text h3 { font-family: var(--font-head); margin: 4px 0 2px; }
.instructor-text p { margin: 6px 0; }
.link-arrow { color: var(--primary-dark); font-weight: 700; text-decoration: none; cursor: pointer; }
.link-arrow:hover { text-decoration: underline; }

.cta-band { background: var(--primary); color: #fff; border-radius: var(--radius); text-align: center; padding: 40px 28px; margin: 24px 0; }
.cta-band h2 { font-family: var(--font-head); margin: 0 0 8px; font-size: 1.6rem; }
.cta-band p { margin: 0 auto 20px; max-width: 460px; color: #e6f5ef; }

.about-hero { text-align: center; padding: 48px 0 12px; }
.about-av { width: 96px; height: 96px; border-radius: 50%; background: var(--primary); color: #fff; margin: 0 auto 16px;
  display: grid; place-items: center; font-family: var(--font-head); font-weight: 800; font-size: 2rem; }
.about-hero h1 { font-family: var(--font-head); margin: 0 0 4px; }
.about-bio p { font-size: 1.05rem; line-height: 1.75; margin: 0 0 16px; }
.highlights { list-style: none; padding: 0; margin: 0; }
.highlights li { position: relative; padding: 10px 0 10px 26px; border-bottom: 1px solid var(--line); }
.highlights li::before { content: "✓"; position: absolute; left: 2px; color: var(--primary); font-weight: 800; }

.site-footer { border-top: 1px solid var(--line); background: #fff; padding: 28px 0; margin-top: 20px; }
.footer-nav { display: flex; gap: 18px; justify-content: center; margin-bottom: 14px; }
.footer-nav a { color: var(--primary-dark); text-decoration: none; font-weight: 600; font-size: .9rem; cursor: pointer; }
.footer-disclaimer { text-align: center; color: var(--muted); font-size: .78rem; max-width: 640px; margin: 0 auto 8px; line-height: 1.5; }
.footer-copy { text-align: center; color: var(--muted); font-size: .78rem; margin: 0; }

@media (max-width: 560px) {
  .hero-title { font-size: 1.9rem; }
  .site-nav { display: none; }
  .instructor { flex-direction: column; text-align: center; }
}

.quiz-q { padding: 14px 0; border-top: 1px solid var(--line); }
.quiz-q:first-of-type { border-top: 0; }
.quiz-prompt { font-weight: 600; margin-bottom: 10px; }
.quiz-opts { display: flex; flex-direction: column; gap: 8px; }
.quiz-opt { text-align: left; background: #fff; border: 1.5px solid var(--line); color: var(--ink);
  border-radius: var(--radius-sm); padding: 11px 14px; cursor: pointer; font-size: .95rem; font-family: inherit; }
.quiz-opt:hover { border-color: var(--primary); }
.quiz-opt.correct { background: #e3f1ea; border-color: var(--good); color: #18684c; font-weight: 700; }
.quiz-opt.wrong { background: #fbe6e0; border-color: var(--warn); color: var(--warn); }
.quiz-fb { display: none; margin-top: 10px; font-size: .9rem; border-radius: var(--radius-sm); padding: 10px 12px; }
.quiz-fb.good { background: #e3f1ea; color: #18684c; }
.quiz-fb.bad { background: #fbe6e0; color: var(--warn); }

@media (max-width: 480px) {
  .appbar .brand span { display: none; }
  .twoway { flex-direction: column; }
  .tw-mid { flex-direction: row; }
  .sort-buckets { flex-direction: column; }
}