:root {
  --wharton-red: #990000;
  --wharton-red-dark: #7a0000;
  --ink: #111111;
  --ink-soft: #444444;
  --muted: #666666;
  --line: rgba(17, 17, 17, 0.1);
  --surface: #faf8f5;
  --white: #ffffff;
  --nav-height: 68px;
  --serif: "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--surface);
  line-height: 1.6;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin-inline: auto;
}

.eyebrow {
  color: var(--wharton-red);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin: 0 0 0.75rem;
}

h1,
h2,
h3 {
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.05;
  margin: 0;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.25rem);
}

.lead {
  font-size: 1.05rem;
  color: var(--ink-soft);
  max-width: 42rem;
}

.section {
  padding: 5.5rem 0;
}

.section-head {
  margin-bottom: 2.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.35rem;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease), color 0.25s var(--ease);
}

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

.btn-primary {
  background: var(--wharton-red);
  color: var(--white);
}

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

.btn-ghost {
  border: 1px solid rgba(255, 255, 255, 0.55);
  color: var(--white);
}

.btn-block {
  width: 100%;
}

/* Nav */
.nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--nav-height);
  transition: background 0.35s var(--ease), box-shadow 0.35s var(--ease), transform 0.6s var(--ease), opacity 0.6s var(--ease);
  transform: translateY(-110%);
  opacity: 0;
}

.nav.is-mounted {
  transform: translateY(0);
  opacity: 1;
}

.nav.is-scrolled {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--line);
}

.nav-inner {
  width: min(1200px, calc(100% - 2rem));
  margin-inline: auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: inherit;
}

.nav-monogram {
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  background: var(--wharton-red);
  color: var(--white);
  font-weight: 700;
  font-size: 0.95rem;
}

.nav-brand-text {
  font-size: 0.82rem;
  font-weight: 600;
  max-width: 12rem;
  text-align: left;
  line-height: 1.2;
}

.nav-links {
  display: none;
  align-items: center;
  gap: 0.15rem;
}

.nav-links button,
.nav-drawer button {
  color: inherit;
  padding: 0.55rem 0.8rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-radius: 999px;
  transition: background 0.2s ease, color 0.2s ease;
}

.nav-links button:hover,
.nav-drawer button:hover {
  background: rgba(153, 0, 0, 0.08);
}

.nav-cta {
  margin-left: 0.35rem;
  background: var(--wharton-red) !important;
  color: var(--white) !important;
}

.nav-toggle {
  width: 2.5rem;
  height: 2.5rem;
  display: grid;
  gap: 0.32rem;
  align-content: center;
  justify-items: center;
}

.nav-toggle span {
  width: 1.25rem;
  height: 2px;
  background: currentColor;
  transition: transform 0.25s ease;
}

.nav-drawer {
  position: fixed;
  inset: var(--nav-height) 0 auto;
  background: var(--white);
  padding: 1rem;
  display: grid;
  gap: 0.25rem;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

.nav-drawer[hidden] {
  display: none;
}

.nav:not(.is-scrolled) .nav-brand,
.nav:not(.is-scrolled) .nav-links button,
.nav:not(.is-scrolled) .nav-toggle {
  color: var(--white);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  place-items: center;
  overflow: hidden;
  color: var(--white);
}

.hero-media {
  position: absolute;
  inset: 0;
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform-origin: center center;
  will-change: transform;
  animation: heroFadeIn 1.4s var(--ease) both;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.35) 0%, rgba(0, 0, 0, 0.55) 55%, rgba(0, 0, 0, 0.72) 100%);
  will-change: opacity;
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(920px, calc(100% - 2rem));
  text-align: center;
  padding-top: 4rem;
}

.hero-kicker {
  margin: 0 0 1rem;
  color: #ffb3b3;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.hero-kicker.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.hero-title {
  font-size: clamp(2.6rem, 7vw, 5.4rem);
  margin-bottom: 1.25rem;
  will-change: transform, opacity, filter;
}

.hero-title-line {
  display: block;
  font-size: inherit;
  letter-spacing: 0.02em;
}

.title-num {
  font-size: 1em;
  font-variant-numeric: lining-nums;
  font-feature-settings: "lnum" 1;
}

.hero-meta {
  margin: 0 0 2rem;
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  color: rgba(255, 255, 255, 0.88);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.hero-meta.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.85rem;
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.hero-actions.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.scroll-indicator {
  position: absolute;
  left: 50%;
  bottom: 1.75rem;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.75);
  display: grid;
  gap: 0.35rem;
  justify-items: center;
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  animation: bounce 2s infinite;
}

@keyframes heroFadeIn {
  from {
    opacity: 0;
    transform: scale(1.08);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes bounce {
  0%,
  100% {
    transform: translateX(-50%) translateY(0);
  }
  50% {
    transform: translateX(-50%) translateY(8px);
  }
}

@keyframes logoScroll {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  filter: blur(6px);
  transition:
    opacity 0.85s var(--ease),
    transform 0.85s var(--ease),
    filter 0.85s var(--ease);
  transition-delay: var(--delay, 0ms);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}

.nav-links button.is-active,
.nav-drawer button.is-active {
  border: 1px solid rgba(255, 255, 255, 0.85);
}

.nav.is-scrolled .nav-links button.is-active,
.nav.is-scrolled .nav-drawer button.is-active {
  border-color: var(--wharton-red);
  color: var(--wharton-red);
}

.hero-kicker-lines {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
}

.hero-kicker-line {
  display: block;
  width: 2.5rem;
  height: 1px;
  background: var(--wharton-red);
}

.hero-kicker.is-visible .hero-kicker-line {
  opacity: 1;
}

.section-about-details {
  padding-top: 4rem;
  padding-bottom: 3rem;
  background: var(--white);
}

.about-details-grid {
  display: grid;
  gap: 2.5rem;
}

.about-details-block h2 {
  font-size: clamp(1.65rem, 3vw, 2.25rem);
  margin-bottom: 1rem;
}

.about-details-block p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1.02rem;
  line-height: 1.75;
  max-width: 36rem;
}

.section-stats {
  padding-top: 3.5rem;
  padding-bottom: 3.5rem;
  background: var(--surface);
}

.section-stats .container {
  text-align: center;
}

.section-stats .stats-grid {
  margin-top: 0;
}

/* Stats */
.stats-grid {
  display: inline-grid;
  grid-template-columns: repeat(2, minmax(10rem, 13rem));
  gap: 1rem;
  text-align: center;
}

.stat-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 1.5rem;
  text-align: center;
}

.stat-value {
  display: block;
  font-family: var(--serif);
  font-size: 2.8rem;
  line-height: 1;
  color: var(--wharton-red);
  text-transform: none;
}

.stat-suffix {
  text-transform: lowercase;
}

.stat-label {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.85rem;
  color: var(--muted);
}

/* Carousel */
.section-carousel {
  padding-top: 0;
}

.attendees-heading {
  font-family: var(--serif);
  font-size: clamp(1.75rem, 3vw, 2.35rem);
  font-weight: 600;
  text-align: center;
  margin: 0 0 1.5rem;
  color: var(--ink);
}

.logo-carousel-wrap {
  position: relative;
  overflow: hidden;
  margin-top: 1.5rem;
  padding: 1.25rem 0 1.5rem;
}

.logo-carousel-track {
  display: flex;
  align-items: stretch;
  width: max-content;
  gap: 1.25rem;
  animation: logoScroll 45s linear infinite;
}

.logo-carousel-wrap.is-paused .logo-carousel-track {
  animation-play-state: paused;
}

.logo-carousel-fade {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 100px;
  z-index: 2;
  pointer-events: none;
}

.logo-carousel-fade-left {
  left: 0;
  background: linear-gradient(90deg, var(--surface) 30%, transparent);
}

.logo-carousel-fade-right {
  right: 0;
  background: linear-gradient(270deg, var(--surface) 30%, transparent);
}

.logo-item {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 148px;
  min-height: 88px;
  padding: 0.85rem 1rem;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  filter: none;
  opacity: 1;
  transform: scale(1);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.logo-item:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.logo-item img {
  display: block;
  height: 44px;
  width: 120px;
  max-height: 44px;
  max-width: 120px;
  object-fit: contain;
  object-position: center;
  background: var(--white);
}

.logo-item-lg img {
  height: 58px;
  width: 136px;
  max-height: 58px;
  max-width: 136px;
}

.logo-item-labeled {
  width: 168px;
  min-height: 108px;
  padding: 0.75rem 0.85rem 0.65rem;
}

.logo-labeled-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  height: 100%;
  text-align: center;
}

.logo-labeled-wrap img {
  height: 44px;
  width: 120px;
  max-height: 44px;
  max-width: 120px;
  object-fit: contain;
  object-position: center;
}

.logo-label {
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--ink-soft);
  line-height: 1.3;
  max-width: 148px;
}

.logo-pill {
  background: var(--white);
  border-radius: 0.85rem;
  padding: 0.85rem 1rem;
}

.logo-fallback {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--ink-soft);
  text-align: center;
  line-height: 1.25;
  max-width: 120px;
}

/* Speakers */
.speaker-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}

.speaker-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 1.1rem;
  overflow: hidden;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.speaker-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.08);
}

.speaker-photo {
  aspect-ratio: 4 / 3;
  object-fit: cover;
  width: 100%;
}

.speaker-body {
  padding: 1rem 1.1rem 1.25rem;
}

.speaker-body h3 {
  font-size: 1.35rem;
  margin-bottom: 0.25rem;
}

.speaker-body p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

/* Agenda */
.section-agenda {
  background: var(--white);
}

.agenda-columns {
  display: grid;
  gap: 2rem;
}

.agenda-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.agenda-item {
  display: grid;
  grid-template-columns: 5.5rem 1fr;
  gap: 1rem;
  padding: 1.1rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--surface);
}

.agenda-time {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--wharton-red);
  letter-spacing: 0.06em;
}

.agenda-item h3 {
  font-size: 1.25rem;
  margin-bottom: 0.35rem;
}

.agenda-item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.tracks-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 1.1rem;
  padding: 1.25rem;
}

.tracks-panel h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.track-card + .track-card {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.track-card h4 {
  margin: 0 0 0.35rem;
  font-family: var(--serif);
  font-size: 1.15rem;
}

.track-card ul {
  margin: 0;
  padding-left: 1rem;
  color: var(--muted);
  font-size: 0.92rem;
}

/* Sponsors */
.sponsor-tier + .sponsor-tier {
  margin-top: 2rem;
}

.sponsor-tier h3 {
  font-size: 1.1rem;
  margin-bottom: 1rem;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-family: var(--sans);
  font-weight: 700;
}

.sponsor-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: stretch;
}

.sponsor-row .logo-item {
  margin: 0;
}

.sponsor-row .logo-item img,
.sponsor-row .logo-labeled-wrap img {
  height: 44px;
  width: 120px;
  max-height: 44px;
  max-width: 120px;
  object-fit: contain;
  object-position: center;
  background: var(--white);
}

.sponsor-row .logo-item-lg img {
  height: 58px;
  width: 136px;
  max-height: 58px;
  max-width: 136px;
}

/* Reviews */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.review-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 1.25rem;
}

.stars {
  color: #d4a017;
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
}

.review-card blockquote {
  margin: 0 0 1rem;
  font-family: var(--serif);
  font-size: 1.25rem;
  line-height: 1.35;
}

.review-card cite {
  font-style: normal;
  font-size: 0.88rem;
  color: var(--muted);
}

.video-wrap {
  aspect-ratio: 16 / 9;
  border-radius: 1rem;
  overflow: hidden;
  background: #000;
}

.video-wrap iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

/* Register */
.section-info-link {
  padding-top: 0;
  padding-bottom: 0;
}

.info-link {
  margin: 0;
  text-align: center;
  font-size: 1rem;
  color: var(--ink-soft);
  line-height: 1.7;
}

.info-link a {
  color: var(--wharton-red);
  font-weight: 600;
  text-decoration: none;
  word-break: break-all;
}

.info-link a:hover {
  text-decoration: underline;
}

.section-register {
  padding-top: 3.5rem;
}

.speakers-tba {
  text-align: center;
  max-width: 36rem;
  margin-inline: auto;
}

.register-promo {
  margin-bottom: 2.5rem;
  padding: 1.75rem;
  background: var(--white);
  border: 1px solid rgba(153, 0, 0, 0.18);
  border-radius: 1.1rem;
  box-shadow: 0 16px 40px rgba(153, 0, 0, 0.06);
}

.register-promo-head {
  margin-bottom: 1.25rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--line);
}

.register-promo-deadline {
  margin: 0 0 0.35rem;
  color: var(--wharton-red);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.register-promo-intro {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.35rem, 2.5vw, 1.75rem);
  font-weight: 600;
  line-height: 1.2;
  color: var(--ink);
}

.register-promo-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.25rem;
}

.register-promo-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.85rem;
  align-items: start;
}

.register-promo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.65rem;
  height: 1.65rem;
  margin-top: 0.1rem;
  border-radius: 999px;
  background: rgba(153, 0, 0, 0.1);
  color: var(--wharton-red);
  font-size: 0.85rem;
  font-weight: 700;
  line-height: 1;
}

.register-promo-item strong {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.98rem;
  color: var(--ink);
}

.register-promo-item p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.94rem;
  line-height: 1.65;
}

.register-note {
  margin-top: 1.5rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.92rem;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
  align-items: stretch;
}

.pricing-card .pricing-desc {
  flex: 1;
  margin: 0 0 1.25rem;
  color: var(--ink-soft);
  font-size: 0.92rem;
  line-height: 1.55;
}

.pricing-card .pricing-name {
  margin: 0 0 0.75rem;
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.35;
  color: var(--ink);
}

.pricing-card {
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 1.1rem;
  padding: 1.5rem;
}

.pricing-card-featured {
  border-color: rgba(153, 0, 0, 0.25);
  box-shadow: 0 18px 50px rgba(153, 0, 0, 0.08);
}

.pricing-tier {
  margin: 0 0 0.35rem;
  color: var(--muted);
  font-weight: 600;
}

.pricing-price {
  margin: 0 0 1rem;
  font-family: var(--serif);
  font-size: 3rem;
  color: var(--wharton-red);
}

.pricing-card .btn {
  margin-top: auto;
}

.pricing-card ul {
  margin: 0 0 1.25rem;
  padding-left: 1.1rem;
  color: var(--ink-soft);
}

.footer {
  padding: 2rem 0 2.5rem;
  border-top: 1px solid var(--line);
  background: var(--white);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
}

.footer-inner p {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }

  .nav-toggle {
    display: none;
  }

  .nav-brand-text {
    max-width: none;
  }

  .about-details-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 3rem;
    align-items: start;
  }

  .about-details-block + .about-details-block {
    padding-left: 3rem;
    border-left: 1px solid var(--line);
  }

  .stats-grid {
    grid-template-columns: repeat(4, minmax(10rem, 13rem));
  }

  .register-promo-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
  }

  .agenda-columns {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .hero-content {
    text-align: left;
  }

  .hero-actions,
  .scroll-indicator {
    justify-content: flex-start;
  }

  .scroll-indicator {
    left: 2rem;
    transform: none;
  }

  @keyframes bounce {
    0%,
    100% {
      transform: translateY(0);
    }
    50% {
      transform: translateY(8px);
    }
  }
}