/* ============================================================
   Machine Learning in Finance: shared stylesheet
   Modern, minimalist: hairline borders, restrained color,
   generous whitespace, one accent (Stevens crimson).
   ============================================================ */

:root {
  --bg: #fafaf9;
  --surface: #ffffff;
  --ink: #1c1917;
  --text: #44403c;
  --muted: #78716c;
  --line: #e7e5e4;
  --line-strong: #d6d3d1;
  --accent: #a32638;
  --accent-dark: #821e2d;
  --accent-tint: rgba(163, 38, 56, 0.07);
  --radius: 14px;
  --transition: 0.2s ease;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  position: relative;
}

/* Soft crimson glow behind the top of every page */
body::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 540px;
  background:
    radial-gradient(640px 300px at 10% -5%, rgba(163, 38, 56, 0.06), transparent 70%),
    radial-gradient(900px 360px at 90% -10%, rgba(163, 38, 56, 0.045), transparent 70%);
  pointer-events: none;
  z-index: -1;
}

::selection {
  background: var(--accent);
  color: #fff;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

img {
  max-width: 100%;
}

/* ---------- Header / Nav ---------- */

header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  z-index: 999;
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0.9em 1.5em;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5em;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.9em;
  text-decoration: none;
  min-width: 0;
}

.brand img {
  height: 34px;
  display: block;
}

.brand span {
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
  white-space: nowrap;
}

nav ul {
  display: flex;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 1.75em;
}

nav ul li a {
  text-decoration: none;
  color: var(--muted);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition);
}

nav ul li a:hover {
  color: var(--ink);
}

nav ul li a.active {
  color: var(--accent);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 7px;
  text-decoration-thickness: 2px;
}

.hamburger {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.3em 0.6em;
  cursor: pointer;
  font-size: 1.15rem;
  color: var(--ink);
  line-height: 1;
}

/* ---------- Layout ---------- */

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5em;
}

.section {
  margin: 5em 0;
}

.eyebrow {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1em;
}

.section-title {
  font-family: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
  margin: 0 0 0.5em;
  text-wrap: balance;
}

.section-lead {
  color: var(--muted);
  max-width: 62ch;
  margin: 0 0 2.5em;
  text-wrap: pretty;
}

.text-link {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
}

.text-link:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  padding: 0.7em 1.5em;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}

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

.btn-primary:hover {
  background: var(--accent-dark);
}

.btn-ghost {
  background: var(--surface);
  border-color: var(--line-strong);
  color: var(--ink);
}

.btn-ghost:hover {
  border-color: var(--muted);
}

/* ---------- Hero (home) ---------- */

.hero {
  padding: 5.5em 0 1em;
  max-width: 780px;
}

.hero h1 {
  font-family: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  font-size: clamp(2.3rem, 5.5vw, 3.4rem);
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 0 0 0.5em;
  text-wrap: balance;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 58ch;
  margin: 0 0 2em;
  text-wrap: pretty;
}

.hero-sub strong {
  color: var(--text);
  font-weight: 600;
}

.hero-actions {
  display: flex;
  gap: 0.8em;
  flex-wrap: wrap;
}

/* Gentle entrance for the hero, one element at a time */
@keyframes hero-rise {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero > * {
  animation: hero-rise 0.55s ease both;
}

.hero > *:nth-child(2) { animation-delay: 0.07s; }
.hero > *:nth-child(3) { animation-delay: 0.14s; }
.hero > *:nth-child(4) { animation-delay: 0.21s; }
.hero > *:nth-child(5) { animation-delay: 0.28s; }

@media (prefers-reduced-motion: reduce) {
  .hero > * {
    animation: none;
  }
}

/* The arc of topics, from regression to agents */
.hero-path {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5em 0.7em;
  margin-top: 3em;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--muted);
}

.hero-path .sep {
  color: var(--accent);
  opacity: 0.55;
  font-size: 0.8rem;
}

/* ---------- Course cards (home) ---------- */

.course-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5em;
}

.course-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2em;
  text-decoration: none;
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.course-card:hover {
  border-color: rgba(163, 38, 56, 0.4);
  box-shadow: 0 12px 32px rgba(28, 25, 23, 0.07);
  transform: translateY(-3px);
}

.course-card .code {
  align-self: flex-start;
  background: var(--accent-tint);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  padding: 0.3em 0.9em;
  border-radius: 999px;
}

.course-card h3 {
  color: var(--ink);
  font-size: 1.3rem;
  font-weight: 650;
  letter-spacing: -0.01em;
  margin: 1em 0 0.4em;
}

.course-card p {
  margin: 0 0 1.5em;
  flex: 1;
  font-size: 0.97rem;
}

.course-card .enter {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.95rem;
}

.course-card .enter .arrow {
  display: inline-block;
  transition: transform var(--transition);
}

.course-card:hover .enter .arrow {
  transform: translateX(4px);
}

/* ---------- Testimonials (home) ---------- */

.testimonial-carousel {
  overflow: hidden;
  padding: 0.25em 0 0.5em;
  -webkit-mask-image: linear-gradient(to right, transparent, #000 6%, #000 94%, transparent);
  mask-image: linear-gradient(to right, transparent, #000 6%, #000 94%, transparent);
}

.testimonial-track {
  display: flex;
  gap: 1.5em;
  width: max-content;
  animation: testimonial-scroll 40s linear infinite;
}

.testimonial-carousel:hover .testimonial-track {
  animation-play-state: paused;
}

@keyframes testimonial-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(calc(-50% - 0.75em)); }
}

@media (prefers-reduced-motion: reduce) {
  .testimonial-track {
    animation: none;
  }

  .testimonial-carousel {
    overflow-x: auto;
    -webkit-mask-image: none;
    mask-image: none;
  }
}

.testimonial-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.8em;
  display: flex;
  flex-direction: column;
  flex: 0 0 320px;
  width: 320px;
}

.testimonial-card .quote-mark {
  color: var(--accent);
  font-size: 2.6rem;
  line-height: 0.5;
  height: 0.55em;
  font-family: 'Source Serif 4', Georgia, 'Times New Roman', serif;
}

.testimonial-card blockquote {
  margin: 0 0 1.2em;
  font-family: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  font-style: italic;
  font-size: 1.02rem;
  line-height: 1.6;
  flex: 1;
}

.testimonial-card .attribution {
  font-weight: 600;
  color: var(--ink);
  font-size: 0.9rem;
}

.testimonial-card .attribution span {
  display: block;
  font-weight: 400;
  color: var(--muted);
  font-size: 0.82rem;
}

/* ---------- Career fit chat (home) ---------- */

.chat-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.chat-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1em;
  padding: 0.65em 0.9em 0.65em 1.5em;
  border-bottom: 1px solid var(--line);
}

.chat-toolbar-label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.chat-new {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--text);
  padding: 0.35em 0.9em;
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition), color var(--transition), opacity var(--transition);
}

.chat-new svg {
  width: 14px;
  height: 14px;
}

.chat-new:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-tint);
}

.chat-new:disabled {
  opacity: 0.45;
  cursor: default;
}

.chat-messages {
  height: 380px;
  overflow-y: auto;
  padding: 1.5em;
  display: flex;
  flex-direction: column;
  gap: 0.9em;
}

.chat-msg {
  max-width: min(85%, 70ch);
  padding: 0.75em 1.1em;
  border-radius: var(--radius);
  font-size: 0.95rem;
  line-height: 1.55;
}

.chat-msg.user {
  align-self: flex-end;
  background: var(--accent);
  color: #fff;
  border-bottom-right-radius: 4px;
}

.chat-msg.assistant {
  align-self: flex-start;
  background: var(--bg);
  border: 1px solid var(--line);
  border-bottom-left-radius: 4px;
}

.chat-msg p {
  margin: 0 0 0.6em;
}

.chat-msg p:last-child {
  margin-bottom: 0;
}

.chat-msg ul {
  margin: 0 0 0.6em;
  padding-left: 1.2em;
}

.chat-msg ul:last-child {
  margin-bottom: 0;
}

.chat-msg li {
  margin: 0.3em 0;
}

.chat-msg code {
  background: var(--accent-tint);
  border-radius: 4px;
  padding: 0.1em 0.35em;
  font-size: 0.88em;
}

.chat-typing span {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 4px;
  border-radius: 50%;
  background: var(--muted);
  animation: chat-bounce 1.2s infinite;
}

.chat-typing span:nth-child(2) {
  animation-delay: 0.15s;
}

.chat-typing span:nth-child(3) {
  animation-delay: 0.3s;
  margin-right: 0;
}

@keyframes chat-bounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.5; }
  30% { transform: translateY(-4px); opacity: 1; }
}

.chat-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5em;
  padding: 0 1.5em 1.1em;
}

.chat-chip {
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--text);
  padding: 0.35em 1em;
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition), color var(--transition);
}

.chat-chip:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-tint);
}

.chat-form {
  display: flex;
  align-items: center;
  border-top: 1px solid var(--line);
}

.chat-form input {
  flex: 1;
  min-width: 0;
  border: none;
  outline: none;
  background: transparent;
  padding: 1em 1.5em;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--ink);
}

.chat-form input::placeholder {
  color: var(--muted);
}

.chat-send {
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  margin: 0.5em 0.75em 0.5em 0;
  border: none;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), opacity var(--transition);
}

.chat-send svg {
  width: 18px;
  height: 18px;
}

.chat-send:hover {
  background: var(--accent-dark);
}

.chat-send:disabled {
  opacity: 0.45;
  cursor: default;
}

.chat-disclaimer {
  font-size: 0.8rem;
  color: var(--muted);
  max-width: 70ch;
  margin-top: 1em;
}

.chat-disclaimer a {
  color: var(--muted);
}

/* ---------- Instructor (home) ---------- */

.instructor-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2.5em;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2.5em;
}

.instructor-card img {
  width: 160px;
  border-radius: 50%;
  display: block;
}

.instructor-card .eyebrow {
  margin-bottom: 0.6em;
}

.instructor-card p {
  margin: 0 0 1.2em;
  max-width: 62ch;
}

/* ---------- Course pages ---------- */

.page-header {
  padding: 4.5em 0 0;
  max-width: 780px;
}

.page-header h1 {
  font-family: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  font-size: clamp(2rem, 4.5vw, 2.7rem);
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.015em;
  line-height: 1.18;
  margin: 0 0 0.6em;
  text-wrap: balance;
}

.page-header .lead {
  font-size: 1.15rem;
  color: var(--ink);
  font-weight: 500;
  max-width: 60ch;
  margin: 0 0 1em;
  text-wrap: pretty;
}

.page-header p {
  max-width: 68ch;
}

.course-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6em;
  margin-top: 1.8em;
}

.course-meta span {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  padding: 0.35em 1em;
  border-radius: 999px;
  font-size: 0.85rem;
}

/* Schedule */

.module {
  padding: 2.2em 0;
  border-top: 1px solid var(--line);
}

.module:first-of-type {
  border-top: none;
  padding-top: 0.5em;
}

.module h3 {
  font-size: 1.15rem;
  font-weight: 650;
  color: var(--ink);
  letter-spacing: -0.01em;
  margin: 0;
}

.module-num {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  font-variant-numeric: tabular-nums;
  margin-right: 1em;
  position: relative;
  top: -1px;
}

.week-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1em;
}

.week-table th {
  text-align: left;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  padding: 0.7em 0.6em;
  border-bottom: 1px solid var(--line-strong);
}

.week-table td {
  padding: 0.9em 0.6em;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
  transition: background var(--transition);
}

.week-table tr:hover td {
  background: rgba(163, 38, 56, 0.035);
}

.week-table tr:last-child td {
  border-bottom: none;
}

.week-table td:first-child {
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.week-table th:nth-child(1),
.week-table td:nth-child(1) {
  width: 10%;
}

.week-table th:nth-child(2),
.week-table td:nth-child(2) {
  width: 68%;
}

.week-table th:nth-child(3),
.week-table td:nth-child(3) {
  width: 22%;
}

.slide-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  text-decoration: none;
  color: var(--accent);
  font-weight: 500;
  font-size: 0.88rem;
  padding: 0.35em 1em;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  transition: border-color var(--transition), background var(--transition);
  white-space: nowrap;
}

.slide-link:hover {
  border-color: var(--accent);
  background: var(--accent-tint);
}

.supp-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7em;
  margin-top: 1.2em;
}

/* Textbooks */

.textbook-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5em;
}

.textbook-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2.2em 2em;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.textbook-card:hover {
  border-color: var(--line-strong);
  box-shadow: 0 10px 30px rgba(28, 25, 23, 0.05);
}

.textbook-cover {
  width: 150px;
  height: 210px;
  object-fit: contain;
}

.textbook-cover-ph {
  width: 150px;
  height: 210px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 2rem;
  letter-spacing: 0.04em;
  color: var(--accent);
  background: var(--accent-tint);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.textbook-card h3 {
  color: var(--ink);
  font-size: 1.15rem;
  font-weight: 650;
  letter-spacing: -0.01em;
  margin: 1.4em 0 0.4em;
}

.textbook-card p {
  margin: 0 0 0.3em;
  font-size: 0.92rem;
  color: var(--muted);
  line-height: 1.5;
}

.textbook-card .text-link {
  margin-top: 1.2em;
}

/* ---------- Resources page ---------- */

.tag-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5em;
  margin-bottom: 1em;
}

.tag {
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--text);
  padding: 0.35em 1.1em;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition), color var(--transition);
}

.tag:hover {
  border-color: var(--muted);
}

.tag.active {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}

.resource-item {
  padding: 1.2em 0;
  border-bottom: 1px solid var(--line);
}

.resource-item:last-child {
  border-bottom: none;
}

.resource-item a {
  color: var(--ink);
  text-decoration: none;
  font-weight: 550;
  transition: color var(--transition);
}

.resource-item a:hover {
  color: var(--accent);
}

.resource-item p {
  margin: 0.35em 0 0;
  font-size: 0.9rem;
  color: var(--muted);
  max-width: 72ch;
}

.resource-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5em;
  margin-top: 0.55em;
}

.resource-tag {
  font-size: 0.76rem;
  color: var(--muted);
  border: 1px solid var(--line);
  padding: 0.15em 0.7em;
  border-radius: 999px;
}

/* ---------- Contact page ---------- */

.campus-image {
  margin: 3em 0 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
}

.campus-image img {
  width: 100%;
  height: auto;
  display: block;
}

.contact-grid {
  display: grid;
  gap: 1.6em;
  max-width: 560px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1em;
}

.contact-item svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: 3px;
  color: var(--accent);
}

.contact-item p {
  margin: 0;
}

.contact-item a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

.contact-item a:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.contact-item strong {
  display: block;
  color: var(--ink);
  margin-bottom: 0.25em;
}

/* ---------- Footer ---------- */

footer {
  border-top: 1px solid var(--line);
  margin-top: 6em;
  padding: 2.5em 1.5em;
  text-align: center;
}

.footer-nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.4em 1.7em;
  margin-bottom: 1.5em;
}

.footer-nav a {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition);
}

.footer-nav a:hover {
  color: var(--accent);
}

footer p {
  margin: 0.25em 0;
  font-size: 0.88rem;
  color: var(--muted);
}

.footer-note {
  max-width: 640px;
  margin: 1.1em auto 0 !important;
  font-size: 0.8rem;
  line-height: 1.6;
}

/* ---------- Responsive ---------- */

@media (max-width: 820px) {
  .brand span {
    font-size: 0.9rem;
    white-space: normal;
    line-height: 1.25;
  }

  nav ul {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    padding: 0.5em 0;
  }

  nav ul.open {
    display: flex;
  }

  nav ul li a {
    display: block;
    padding: 0.8em 1.5em;
  }

  nav ul li a.active {
    text-decoration: none;
  }

  .hamburger {
    display: block;
  }

  .hero {
    padding-top: 3.5em;
  }

  .section {
    margin: 3.5em 0;
  }

  .page-header {
    padding-top: 3em;
  }

  .instructor-card {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 2em 1.5em;
  }

  .instructor-card img {
    margin: 0 auto;
  }

  .week-table th:nth-child(1),
  .week-table td:nth-child(1) {
    width: 14%;
  }

  .chat-toolbar {
    padding: 0.6em 0.8em 0.6em 1.1em;
  }

  .chat-messages {
    height: 320px;
    padding: 1.1em;
  }

  .chat-msg {
    max-width: 92%;
  }

  .chat-suggestions {
    padding: 0 1.1em 1em;
  }
}