/* AI Infrastructure Academy landing page
   Dark editorial — palette/typography mirrors the slide theme. */

:root {
  --c-bg:        #0f1419;
  --c-bg-2:      #0b0f13;
  --c-surface:   #161b22;
  --c-surface-2: #1f2630;
  --c-ink:       #e6edf3;
  --c-ink-dim:   #8b949e;
  --c-accent:    #7ee787;
  --c-accent-2:  #79c0ff;
  --c-warn:      #f0883e;
  --c-rule:      #1f2630;

  --f-display: 'Inter', 'SF Pro Display', system-ui, sans-serif;
  --f-body:    'Inter', 'SF Pro Text', system-ui, sans-serif;
  --f-mono:    'JetBrains Mono', 'SF Mono', Menlo, monospace;

  --container: 1120px;
  --space-section: clamp(5rem, 4rem + 6vw, 9rem);
  --radius: 12px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--c-bg);
  color: var(--c-ink);
  font-family: var(--f-body);
  font-size: 17px;
  line-height: 1.6;
  letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.wrap {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

a {
  color: var(--c-accent-2);
  text-decoration: none;
  border-bottom: 1px solid var(--c-rule);
  transition: border-color 150ms ease;
}

a:hover { border-color: var(--c-accent-2); }

h1, h2, h3, h4 {
  font-family: var(--f-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 0 0 .6em;
}

h1 { font-size: clamp(2.8rem, 1.8rem + 4vw, 4.8rem); }
h2 { font-size: clamp(2rem, 1.4rem + 2vw, 3rem); margin-bottom: .8em; }
h3 { font-size: 1.4rem; color: var(--c-accent-2); }
h4 { font-size: 1rem; color: var(--c-ink-dim); text-transform: uppercase; letter-spacing: 0.1em; }

p { margin: 0 0 1em; }

strong { color: var(--c-accent); font-weight: 600; }

code, kbd {
  font-family: var(--f-mono);
  background: var(--c-surface-2);
  color: var(--c-accent);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 0.92em;
}

/* ---------- NAV ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(15, 20, 25, 0.85);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--c-rule);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  max-width: var(--container);
  margin: 0 auto;
}

.nav__brand {
  font-family: var(--f-mono);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--c-ink);
  border: none;
}

.nav__brand strong { color: var(--c-accent); }

.nav__links {
  display: flex;
  gap: 32px;
  font-size: 14px;
  font-family: var(--f-mono);
}

.nav__links a {
  color: var(--c-ink-dim);
  border: none;
}

.nav__links a:hover { color: var(--c-ink); }

.nav__github {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.nav__github svg {
  transition: transform 150ms ease-out;
}

.nav__github:hover svg {
  transform: translateY(-1px);
}

@media (max-width: 720px) {
  .nav__links { display: none; }
}

/* ---------- HERO ---------- */

.hero {
  position: relative;
  padding: clamp(5rem, 3rem + 8vw, 10rem) 0 clamp(4rem, 2rem + 8vw, 8rem);
  background:
    radial-gradient(ellipse at top left,  rgba(126, 231, 135, 0.06), transparent 60%),
    radial-gradient(ellipse at bottom right, rgba(121, 192, 255, 0.07), transparent 60%),
    var(--c-bg);
  overflow: hidden;
}

.hero__eyebrow {
  font-family: var(--f-mono);
  color: var(--c-accent);
  font-size: 14px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.hero h1 {
  max-width: 17ch;
  margin-bottom: 24px;
}

.hero h1 .period { color: var(--c-accent); }
.hero h1 .accent { color: var(--c-accent); }

.hero__sub {
  font-size: clamp(1.1rem, 1rem + 0.3vw, 1.3rem);
  color: var(--c-ink-dim);
  max-width: 50ch;
  margin-bottom: 48px;
  line-height: 1.5;
}

.hero__price {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 40px;
  margin-bottom: 48px;
  padding: 24px 32px;
  background: var(--c-surface);
  border: 1px solid var(--c-rule);
  border-left: 4px solid var(--c-accent);
  border-radius: var(--radius);
  max-width: 580px;
}

.hero__price div {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.hero__price .label {
  font-family: var(--f-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-ink-dim);
}

.hero__price .amount {
  font-family: var(--f-display);
  font-size: 32px;
  font-weight: 700;
  color: var(--c-ink);
  line-height: 1;
}

.hero__price .amount.founding { color: var(--c-accent); }

.hero__price .note {
  font-size: 13px;
  color: var(--c-ink-dim);
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 32px;
  background: var(--c-accent);
  color: var(--c-bg);
  font-family: var(--f-display);
  font-weight: 600;
  font-size: 17px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: transform 150ms ease, background 150ms ease;
}

.hero__cta:hover {
  background: #95eea1;
  transform: translateY(-1px);
}

.hero__cta .arrow {
  display: inline-block;
  transition: transform 200ms ease;
}

.hero__cta:hover .arrow { transform: translateX(4px); }

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin-top: 32px;
  font-family: var(--f-mono);
  font-size: 13px;
  color: var(--c-ink-dim);
}

.hero__meta span { display: inline-flex; align-items: center; gap: 8px; }

.hero__meta .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-accent);
}

/* ---------- SECTION ---------- */

section {
  padding: var(--space-section) 0;
  border-top: 1px solid var(--c-rule);
}

.section__eyebrow {
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: 16px;
}

.section__lede {
  font-size: 1.15rem;
  color: var(--c-ink-dim);
  max-width: 56ch;
  margin: 0 0 56px;
  line-height: 1.6;
}

/* ---------- WHY ---------- */

.why__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.why__item {
  padding: 28px;
  background: var(--c-surface);
  border-radius: var(--radius);
  border: 1px solid var(--c-rule);
}

.why__item h3 {
  margin-bottom: 12px;
  color: var(--c-ink);
  font-size: 1.2rem;
}

.why__item p {
  margin: 0;
  color: var(--c-ink-dim);
  font-size: 0.97rem;
  line-height: 1.55;
}

.why__item .num {
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--c-accent);
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 14px;
}

/* ---------- INCLUDED ---------- */

.included {
  background: var(--c-bg-2);
}

.included__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.included__card {
  padding: 24px;
  background: var(--c-surface);
  border-radius: var(--radius);
  border: 1px solid var(--c-rule);
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.included__card .icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  border-radius: 8px;
  background: rgba(126, 231, 135, 0.1);
  color: var(--c-accent);
  display: grid;
  place-items: center;
  font-family: var(--f-mono);
  font-size: 16px;
}

.included__card h3 {
  margin: 0 0 6px;
  font-size: 1rem;
  color: var(--c-ink);
}

.included__card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--c-ink-dim);
  line-height: 1.5;
}

/* ---------- CURRICULUM ---------- */

.curriculum__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  counter-reset: session;
}

.session {
  position: relative;
  padding: 24px 24px 20px;
  background: var(--c-surface);
  border-radius: var(--radius);
  border: 1px solid var(--c-rule);
  transition: transform 200ms ease, border-color 200ms ease;
}

.session:hover {
  transform: translateY(-2px);
  border-color: var(--c-accent);
}

.session::before {
  counter-increment: session;
  content: counter(session, decimal-leading-zero);
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--c-accent);
  display: block;
  margin-bottom: 10px;
}

.session h3 {
  font-size: 1.05rem;
  color: var(--c-ink);
  margin-bottom: 8px;
  line-height: 1.3;
}

.session p {
  font-size: 0.88rem;
  color: var(--c-ink-dim);
  margin: 0;
  line-height: 1.5;
}

.session.demo-day {
  background: linear-gradient(135deg, var(--c-surface), rgba(126, 231, 135, 0.05));
  border-color: var(--c-accent);
}

.session.demo-day::before { content: '16 · graduation'; }

/* ---------- PRICING ---------- */

.pricing__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 8px;
}

@media (max-width: 720px) {
  .pricing__grid { grid-template-columns: 1fr; }
}

.tier {
  padding: 36px 32px;
  background: var(--c-surface);
  border-radius: var(--radius);
  border: 1px solid var(--c-rule);
  display: flex;
  flex-direction: column;
}

.tier.founding {
  background: linear-gradient(180deg, var(--c-surface), rgba(126, 231, 135, 0.04));
  border-color: var(--c-accent);
  position: relative;
}

.tier.founding::after {
  content: 'Cohort 1';
  position: absolute;
  top: 16px;
  right: 16px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  background: var(--c-accent);
  color: var(--c-bg);
  padding: 4px 10px;
  border-radius: 20px;
}

.tier h3 {
  color: var(--c-ink);
  font-size: 1.3rem;
  margin-bottom: 8px;
}

.tier__price {
  font-family: var(--f-display);
  font-size: 3rem;
  font-weight: 700;
  margin: 16px 0 4px;
  color: var(--c-ink);
  line-height: 1;
}

.tier.founding .tier__price { color: var(--c-accent); }

.tier__hourly {
  font-family: var(--f-mono);
  font-size: 13px;
  color: var(--c-ink-dim);
  margin-bottom: 24px;
}

.tier ul {
  list-style: none;
  padding: 0;
  margin: 0 0 32px;
  flex: 1;
}

.tier li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 12px;
  font-size: 0.95rem;
  color: var(--c-ink-dim);
}

.tier li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--c-accent);
  font-weight: 700;
}

/* ---------- FOR TEAMS / B2B ---------- */

/* Slim callout on the consumer page that links to teams.html */
.teams-callout__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 32px;
  background: var(--c-surface);
  border: 1px solid var(--c-rule);
  border-left: 4px solid var(--c-accent-2);
  border-radius: var(--radius);
}

/* First-cohort callout: green accent to signal it's live */
.cohort-callout .teams-callout__inner {
  border-left-color: var(--c-accent);
}

.teams-callout__copy h2 {
  margin: 4px 0 8px;
}

.teams-callout__copy p {
  color: var(--c-ink-dim);
  max-width: 56ch;
  margin: 0;
}

.teams-callout__inner .hero__cta {
  flex: 0 0 auto;
}

@media (max-width: 720px) {
  .teams-callout__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
  }
}

.teams__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin-top: 8px;
}

.tier.team-featured {
  border-color: var(--c-accent-2);
  border-left: 4px solid var(--c-accent-2);
  position: relative;
}

.tier__flag {
  position: absolute;
  top: -11px;
  left: 32px;
  font-family: var(--f-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-bg);
  background: var(--c-accent-2);
  padding: 3px 10px;
  border-radius: 6px;
}

.tier__price--quote {
  font-size: 1.9rem;
  font-family: var(--f-mono);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--c-accent-2);
}

.teams__note {
  margin-top: 28px;
  padding: 18px 22px;
  border-left: 3px solid var(--c-accent);
  background: var(--c-surface);
  border-radius: 8px;
  color: var(--c-ink-dim);
  font-size: 14px;
  line-height: 1.6;
  max-width: 72ch;
}

/* ---------- LADDER GROUPS + ROLE PAGES ---------- */

.ladder__groups {
  display: flex;
  flex-direction: column;
  gap: 40px;
  margin-top: 8px;
}

.ladder__group-title {
  font-family: var(--f-mono);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--c-ink-dim);
  margin: 0 0 16px;
}

/* Rung cards are links on the hub page */
a.rung {
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--c-rule);
  transition: transform 150ms ease, border-color 150ms ease;
}

a.rung:hover {
  border-color: var(--c-accent-2);
  transform: translateY(-2px);
}

.rung--dev .rung__status {
  color: var(--c-warn);
}

.badge-dev {
  color: var(--c-warn);
  font-weight: 600;
}

/* Role page: repo links + crosssell */
.role-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.role-links a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  border: 1px solid var(--c-rule);
  border-radius: 8px;
  color: var(--c-ink);
  font-family: var(--f-mono);
  font-size: 14px;
  transition: border-color 150ms ease;
}

.role-links a:hover {
  border-color: var(--c-accent-2);
}

.role-crosssell {
  margin-top: 28px;
  color: var(--c-ink-dim);
  font-size: 14px;
  line-height: 1.6;
  max-width: 70ch;
}

/* Role waitlist form (email + submit) */
.waitlist {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
  max-width: 520px;
}

.waitlist input[type="email"] {
  flex: 1 1 220px;
  background: var(--c-surface);
  border: 1px solid var(--c-rule);
  border-radius: 8px;
  padding: 14px 16px;
  font-family: var(--f-body);
  font-size: 16px;
  color: var(--c-ink);
  transition: border-color 150ms ease;
}

.waitlist input[type="email"]:focus {
  outline: none;
  border-color: var(--c-accent);
}

.waitlist button {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 24px;
  background: var(--c-accent);
  color: var(--c-bg);
  font-family: var(--f-display);
  font-weight: 600;
  font-size: 16px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: transform 150ms ease, background 150ms ease;
}

.waitlist button:hover {
  background: #95eea1;
  transform: translateY(-1px);
}

.waitlist button:disabled {
  opacity: 0.7;
  cursor: progress;
  transform: none;
}

.waitlist__status {
  max-width: 520px;
}

.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;
}

/* ---------- FAQ ---------- */

.faq {
  background: var(--c-bg-2);
}

.faq__list {
  max-width: 800px;
}

.faq details {
  border-bottom: 1px solid var(--c-rule);
  padding: 24px 0;
}

.faq summary {
  cursor: pointer;
  font-family: var(--f-display);
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--c-ink);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.faq summary::-webkit-details-marker { display: none; }

.faq summary::after {
  content: '+';
  font-family: var(--f-mono);
  color: var(--c-accent);
  font-size: 28px;
  font-weight: 300;
  transition: transform 200ms ease;
  flex-shrink: 0;
}

.faq details[open] summary::after {
  content: '−';
  transform: rotate(0deg);
}

.faq details > div {
  padding-top: 16px;
  color: var(--c-ink-dim);
  line-height: 1.65;
}

.faq details > div p:last-child { margin-bottom: 0; }

/* ---------- APPLY (form) ---------- */

.apply {
  text-align: left;
}

.apply__wrap {
  max-width: 560px;
}

.form {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 8px;
}

.form__group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form__group label {
  font-family: var(--f-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-ink-dim);
}

.form__group input,
.form__group textarea,
.form__group select {
  background: var(--c-surface);
  border: 1px solid var(--c-rule);
  border-radius: 8px;
  padding: 14px 16px;
  font-family: var(--f-body);
  font-size: 16px;
  color: var(--c-ink);
  transition: border-color 150ms ease;
}

.form__group select {
  appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%238b949e' d='M6 8 0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.form__group input:focus,
.form__group textarea:focus,
.form__group select:focus {
  outline: none;
  border-color: var(--c-accent);
}

.form__group textarea {
  min-height: 120px;
  resize: vertical;
  line-height: 1.5;
}

.form button {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 32px;
  background: var(--c-accent);
  color: var(--c-bg);
  font-family: var(--f-display);
  font-weight: 600;
  font-size: 17px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: transform 150ms ease, background 150ms ease;
}

.form button:hover {
  background: #95eea1;
  transform: translateY(-1px);
}

.form__note {
  font-size: 13px;
  color: var(--c-ink-dim);
  margin-top: 4px;
}

/* Minimum-requirements panel + acknowledgment checkbox */
.form__reqs {
  border: 1px solid var(--c-rule);
  border-left: 3px solid var(--c-accent-2);
  border-radius: 8px;
  background: var(--c-surface);
  padding: 18px 20px 20px;
  margin: 0;
}

.form__reqs legend {
  font-family: var(--f-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-ink-dim);
  padding: 0 8px;
}

.form__reqs-list {
  list-style: none;
  margin: 4px 0 16px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form__reqs-list li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--c-ink-dim);
}

.form__reqs-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--c-accent-2);
}

.form__reqs-list strong {
  color: var(--c-ink);
  font-weight: 600;
}

.form__check {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  cursor: pointer;
  font-size: 14px;
  line-height: 1.5;
  color: var(--c-ink);
  padding-top: 14px;
  border-top: 1px solid var(--c-rule);
}

.form__check input[type="checkbox"] {
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin-top: 1px;
  accent-color: var(--c-accent);
  cursor: pointer;
}

.form__check input[type="checkbox"]:focus-visible {
  outline: 2px solid var(--c-accent-2);
  outline-offset: 2px;
}

/* Honeypot — kept out of the visual + a11y tree, but reachable by bots */
.form__hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.form button:disabled {
  cursor: progress;
  opacity: 0.7;
  transform: none;
}

.form__status {
  font-family: var(--f-mono);
  font-size: 14px;
  line-height: 1.5;
  padding: 12px 16px;
  border-radius: 8px;
  border: 1px solid var(--c-rule);
  margin: 4px 0 0;
}

.form__status--ok {
  color: var(--c-accent);
  border-color: var(--c-accent);
  background: rgba(126, 231, 135, 0.08);
}

.form__status--err {
  color: var(--c-warn);
  border-color: var(--c-warn);
  background: rgba(240, 136, 62, 0.08);
}

/* ---------- ROLE LADDER ---------- */

.ladder {
  background: var(--c-bg-2);
}

.ladder__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.rung {
  padding: 28px;
  background: var(--c-surface);
  border-radius: var(--radius);
  border: 1px solid var(--c-rule);
  position: relative;
  display: flex;
  flex-direction: column;
}

.rung__status {
  font-family: var(--f-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-ink-dim);
  margin-bottom: 14px;
}

.rung h3 {
  margin-bottom: 10px;
  font-size: 1.15rem;
  color: var(--c-ink);
}

.rung p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--c-ink-dim);
  line-height: 1.55;
}

.rung--live {
  background: linear-gradient(180deg, var(--c-surface), rgba(126, 231, 135, 0.06));
  border-color: var(--c-accent);
}

.rung--live .rung__status {
  color: var(--c-accent);
}

.rung--specialty {
  background: transparent;
  border-style: dashed;
}

/* ---------- CURRICULUM FAMILY (sibling orgs) ---------- */

.curriculum-family {
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid var(--c-rule);
}

.curriculum-family__title {
  font-size: 1.05rem;
  color: var(--c-ink-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.curriculum-family__lede {
  max-width: 60ch;
  color: var(--c-ink-dim);
  margin-bottom: 24px;
}

.curriculum-family__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.family-card {
  padding: 24px;
  background: var(--c-surface);
  border: 1px solid var(--c-rule);
  border-radius: var(--radius);
  border-bottom: 1px solid var(--c-rule);
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.family-card:hover {
  border-color: var(--c-accent-2);
  transform: translateY(-2px);
}

.family-card h4 {
  color: var(--c-accent-2);
  text-transform: none;
  letter-spacing: 0;
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.family-card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--c-ink-dim);
  line-height: 1.55;
}

/* ---------- INSTRUCTOR ---------- */

.instructor {
  display: grid;
  grid-template-columns: minmax(0, 360px) 1fr;
  gap: 48px;
  align-items: start;
}

@media (max-width: 720px) {
  .instructor { grid-template-columns: 1fr; }
}

.instructor__card {
  padding: 28px;
  background: var(--c-surface);
  border-radius: var(--radius);
  border: 1px solid var(--c-rule);
}

.instructor__card .role {
  font-family: var(--f-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-accent);
  margin-bottom: 8px;
}

.instructor__card .photo {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  display: block;
  margin: 0 0 20px;
  border: 2px solid var(--c-rule);
}

.instructor__card h3 {
  color: var(--c-ink);
  margin-bottom: 16px;
}

/* ---------- FOOTER ---------- */

footer {
  border-top: 1px solid var(--c-rule);
  padding: 48px 0;
  text-align: center;
  font-family: var(--f-mono);
  font-size: 13px;
  color: var(--c-ink-dim);
}

footer a {
  color: var(--c-ink-dim);
  border: none;
}

footer a:hover { color: var(--c-ink); }

/* ---------- A11Y ---------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
  html { scroll-behavior: auto; }
}

:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 3px;
  border-radius: 4px;
}