:root {
  --navy: #071321;
  --navy-soft: #14253a;
  --navy-deep: #030914;
  --paper: #f7f5f1;
  --warm: #e9e3da;
  --ink: #111820;
  --muted: #5c626a;
  --terracotta: #bd442a;
  --terracotta-dark: #96351f;
  --gold: #d1ae61;
  --white: #ffffff;
  --line-dark: rgba(10, 22, 40, 0.16);
  --line-light: rgba(255, 255, 255, 0.18);
  --page-x: clamp(22px, 6vw, 96px);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--navy-deep);
  color: var(--ink);
  font-family: "DM Sans", sans-serif;
  font-size: 17px;
  line-height: 1.6;
}

body:has(dialog[open]) {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

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

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

h1,
h2 {
  font-family: "Libre Caslon Display", Georgia, serif;
  font-weight: 400;
  letter-spacing: 0;
}

h1 {
  max-width: 900px;
  margin-bottom: 6px;
  font-size: 6.5rem;
  line-height: 0.96;
}

h2 {
  margin-bottom: 24px;
  font-size: 4.35rem;
  line-height: 1.02;
}

h3 {
  margin-bottom: 12px;
  font-size: 1.65rem;
  line-height: 1.25;
}

.top-ribbon {
  position: relative;
  z-index: 12;
  display: flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  gap: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  background: #06101d;
  color: var(--gold);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-align: center;
  text-transform: uppercase;
}

.top-ribbon span,
.event-pill span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 18px rgba(209, 174, 97, 0.8);
}

.site-header {
  position: absolute;
  z-index: 10;
  top: 42px;
  left: 0;
  display: grid;
  width: 100%;
  grid-template-columns: 230px 1fr auto;
  align-items: center;
  gap: 28px;
  padding: 18px var(--page-x);
  border-bottom: 1px solid var(--line-light);
  color: var(--white);
}

.brand {
  width: 164px;
  height: 44px;
  overflow: hidden;
}

.brand img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.header-meta {
  display: flex;
  gap: 28px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
}

.header-meta a {
  transition: color 180ms ease;
}

.header-meta a:hover {
  color: var(--white);
}

.header-cta {
  padding-bottom: 4px;
  border-bottom: 1px solid var(--gold);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 154px var(--page-x) 66px;
  background: var(--navy-deep);
  color: var(--white);
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 28%;
  opacity: 0.32;
}

.hero-bg::after {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at center, rgba(7, 19, 33, 0.16), rgba(3, 9, 20, 0.86) 72%),
    linear-gradient(180deg, rgba(3, 9, 20, 0.64), rgba(3, 9, 20, 0.94) 68%, var(--navy-deep));
  content: "";
}

.hero-layout {
  position: relative;
  z-index: 1;
  display: grid;
  width: min(1240px, 100%);
  justify-items: center;
  margin: 0 auto;
}

.hero-content {
  display: grid;
  max-width: 1040px;
  justify-items: center;
  text-align: center;
}

.hero h1 {
  max-width: 1060px;
  margin-bottom: 22px;
  font-size: 6.1rem;
  line-height: 0.96;
}

.hero h1 span {
  display: block;
  color: var(--gold);
}

.kicker,
.section-index,
.agenda-label {
  margin-bottom: 20px;
  color: var(--terracotta);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
}

.event-pill {
  display: inline-flex;
  max-width: 100%;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 26px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  padding: 10px 16px;
  background: rgba(7, 19, 33, 0.72);
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero .kicker,
.section-heading-light .section-index,
.section-ink .section-index {
  color: var(--gold);
}

.hero-copy {
  max-width: 820px;
  margin-bottom: 28px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 1.24rem;
}

.hero-actions {
  display: grid;
  align-items: center;
  justify-items: center;
  gap: 10px;
}

.hero-actions p {
  margin: 0;
  color: rgba(255, 255, 255, 0.54);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
}

.hero-video {
  position: relative;
  width: min(1060px, 100%);
  margin-top: 44px;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 0;
  padding: 0;
  background: #000;
  color: var(--white);
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.42);
}

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

.video-context {
  display: grid;
  width: min(1060px, 100%);
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-light);
  color: rgba(255, 255, 255, 0.52);
  font-size: 0.68rem;
  text-transform: uppercase;
}

.video-context strong {
  color: var(--white);
  font-size: 0.74rem;
  text-align: center;
}

.video-context span:last-child {
  text-align: right;
}

.button {
  display: inline-flex;
  min-height: 54px;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 3px;
  padding: 0 28px;
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  transition: background 180ms ease, transform 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--terracotta);
  color: var(--white);
}

.button-primary:hover {
  background: var(--terracotta-dark);
}

.play-icon {
  display: inline-block;
  width: 0;
  height: 0;
  border-top: 7px solid transparent;
  border-bottom: 7px solid transparent;
  border-left: 11px solid currentColor;
}

.event-facts {
  display: grid;
  width: min(900px, 100%);
  grid-template-columns: repeat(3, 1fr);
  margin: 34px 0 0;
  border-top: 1px solid var(--line-light);
}

.event-facts div {
  padding: 18px 18px 0 0;
}

.event-facts dt {
  color: rgba(255, 255, 255, 0.48);
  font-size: 0.68rem;
  text-transform: uppercase;
}

.event-facts dd {
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.92rem;
  font-weight: 600;
}

.ticker {
  overflow: hidden;
  border-top: 1px solid var(--line-light);
  border-bottom: 1px solid var(--line-light);
  background: #071321;
  color: var(--gold);
}

.ticker div {
  display: flex;
  width: max-content;
  gap: 42px;
  padding: 15px 0;
  animation: ticker-move 34s linear infinite;
}

.ticker span {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.metric-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--line-dark);
  background: var(--paper);
}

.metric-strip div {
  min-height: 154px;
  padding: 34px var(--page-x);
  border-right: 1px solid var(--line-dark);
}

.metric-strip div:last-child {
  border-right: 0;
}

.metric-strip strong {
  display: block;
  color: var(--terracotta);
  font-family: "Libre Caslon Display", Georgia, serif;
  font-size: 4.1rem;
  font-weight: 400;
  line-height: 1;
}

.metric-strip span {
  display: block;
  max-width: 210px;
  margin-top: 14px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1.45;
  text-transform: uppercase;
}

.recognition,
.agenda,
.mechanism,
.authority-intro,
.audience,
.data-proof,
.registration,
.faq,
.closing {
  padding: clamp(72px, 8vw, 118px) var(--page-x);
}

.section-light {
  background: var(--paper);
}

.section-warm {
  background: var(--warm);
}

.section-ink {
  background: var(--navy);
  color: var(--white);
}

.section-heading {
  max-width: 880px;
  margin-bottom: 50px;
}

.section-heading > p:last-child,
.mechanism-copy > p,
.registration-copy > p {
  max-width: 670px;
  color: var(--muted);
}

.audience-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line-dark);
  border-left: 1px solid var(--line-dark);
}

.audience-grid article {
  min-height: 290px;
  padding: clamp(26px, 4vw, 42px);
  border-right: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
  background: #fcfbf8;
}

.audience-grid span {
  display: block;
  margin-bottom: 34px;
  color: var(--terracotta);
  font-family: "Libre Caslon Display", Georgia, serif;
  font-size: 4.1rem;
  line-height: 1;
}

.audience-grid p {
  color: var(--muted);
}

.proof-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line-light);
  border: 1px solid var(--line-light);
}

.proof-grid article {
  display: grid;
  min-height: 310px;
  align-content: start;
  gap: 16px;
  padding: clamp(24px, 3vw, 34px);
  background: #071321;
}

.proof-grid strong {
  color: var(--gold);
  font-family: "Libre Caslon Display", Georgia, serif;
  font-size: 4.4rem;
  font-weight: 400;
  line-height: 1;
}

.proof-grid p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.74);
}

.proof-grid small {
  color: rgba(255, 255, 255, 0.42);
  font-size: 0.68rem;
  line-height: 1.45;
}

.section-heading-light > p:last-child {
  color: rgba(255, 255, 255, 0.64);
}

.signal-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--line-dark);
  border-left: 1px solid var(--line-dark);
}

.signal-list article {
  min-height: 190px;
  padding: 32px;
  border-right: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.signal-list span {
  display: block;
  margin-bottom: 26px;
  color: var(--terracotta);
  font-size: 0.72rem;
  font-weight: 700;
}

.signal-list p,
.agenda-grid article > div > p:last-child {
  max-width: 500px;
  margin-bottom: 0;
  color: var(--muted);
}

.agenda-grid {
  border-top: 1px solid var(--line-light);
}

.agenda-grid article {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 28px;
  padding: 42px 0;
  border-bottom: 1px solid var(--line-light);
}

.agenda-number {
  margin: 0;
  color: var(--gold);
  font-family: "Libre Caslon Display", Georgia, serif;
  font-size: 3.5rem;
  line-height: 1;
}

.agenda-label {
  margin-bottom: 8px;
  color: var(--gold);
}

.agenda-grid h3 {
  max-width: 760px;
  color: var(--white);
  font-family: "Libre Caslon Display", Georgia, serif;
  font-size: 2.55rem;
  font-weight: 400;
}

.agenda-grid article > div > p:last-child {
  color: rgba(255, 255, 255, 0.56);
}

.mechanism {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 0.7fr);
  gap: clamp(50px, 9vw, 140px);
  align-items: center;
}

.inline-link {
  display: inline-block;
  margin-top: 16px;
  padding-bottom: 5px;
  border-bottom: 1px solid var(--terracotta);
  color: var(--terracotta);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
}

.architecture-map {
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.map-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  align-items: center;
  gap: 20px;
  padding: 24px 0;
}

.map-row strong {
  color: var(--navy);
  font-family: "Libre Caslon Display", Georgia, serif;
  font-size: 5rem;
  font-weight: 400;
  line-height: 1;
}

.map-row span {
  max-width: 260px;
  font-weight: 600;
}

.map-line {
  width: 1px;
  height: 30px;
  margin-left: 52px;
  background: var(--terracotta);
}

.map-row-accent strong,
.map-row-accent span {
  color: var(--terracotta);
}

.authority-intro {
  display: grid;
  grid-template-columns: minmax(380px, 0.86fr) minmax(0, 1fr);
  gap: clamp(54px, 8vw, 128px);
  align-items: center;
  background: var(--warm);
}

.authority-image {
  position: relative;
  aspect-ratio: 5 / 4;
  margin: 0;
  overflow: hidden;
}

.authority-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 58% center;
}

.authority-image figcaption {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  padding: 16px 20px;
  background: rgba(10, 22, 40, 0.86);
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
}

.authority-lead {
  max-width: 680px;
  color: var(--muted);
  font-size: 1.08rem;
}

.authority-copy blockquote {
  max-width: 680px;
  margin: 28px 0 0;
  border-left: 2px solid var(--terracotta);
  padding-left: 24px;
  color: var(--ink);
  font-family: "Libre Caslon Display", Georgia, serif;
  font-size: 2.25rem;
  line-height: 1.1;
}

.authority-proof {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  margin-top: 34px;
  border-top: 1px solid var(--line-dark);
  border-left: 1px solid var(--line-dark);
}

.authority-proof p {
  display: grid;
  gap: 4px;
  margin: 0;
  padding: 20px;
  border-right: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.authority-proof strong {
  color: var(--terracotta);
  font-family: "Libre Caslon Display", Georgia, serif;
  font-size: 2rem;
  font-weight: 400;
  line-height: 1;
}

.authority-proof span {
  color: var(--muted);
  font-size: 0.72rem;
  text-transform: uppercase;
}

.registration {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(380px, 0.72fr);
  gap: clamp(50px, 9vw, 140px);
  align-items: start;
}

.registration-copy ul {
  display: grid;
  gap: 12px;
  margin: 36px 0 0;
  padding: 0;
  list-style: none;
}

.registration-copy li {
  padding: 12px 0;
  border-bottom: 1px solid var(--line-dark);
  font-size: 0.9rem;
}

.registration-form {
  display: grid;
  gap: 18px;
  padding: clamp(26px, 4vw, 42px);
  border: 1px solid var(--line-dark);
  background: #fcfbf8;
}

.form-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 6px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line-dark);
}

.form-heading span {
  color: var(--muted);
  font-size: 0.72rem;
  text-transform: uppercase;
}

.form-heading strong {
  color: var(--terracotta);
  font-size: 0.78rem;
  text-transform: uppercase;
}

.registration-form label {
  display: grid;
  gap: 7px;
  color: #3f4650;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
}

.registration-form input,
.registration-form select {
  width: 100%;
  min-height: 50px;
  border: 0;
  border-bottom: 1px solid #9ea2a7;
  border-radius: 0;
  padding: 0 2px;
  outline: none;
  background: transparent;
  color: var(--ink);
}

.registration-form input:focus,
.registration-form select:focus {
  border-color: var(--terracotta);
}

.registration-form .consent {
  display: grid;
  grid-template-columns: 18px 1fr;
  align-items: start;
  gap: 10px;
  text-transform: none;
}

.consent input {
  width: 18px;
  min-height: 18px;
  margin: 2px 0 0;
}

.form-message {
  margin: 0;
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.5;
}

.form-message {
  color: var(--terracotta);
  font-weight: 700;
}

.faq {
  display: grid;
  grid-template-columns: minmax(280px, 0.65fr) minmax(0, 1fr);
  gap: clamp(50px, 8vw, 120px);
}

.faq-list {
  border-top: 1px solid var(--line-dark);
}

.faq details {
  border-bottom: 1px solid var(--line-dark);
}

.faq summary {
  position: relative;
  padding: 24px 54px 24px 0;
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}

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

.faq summary::after {
  position: absolute;
  top: 22px;
  right: 4px;
  color: var(--terracotta);
  content: "+";
  font-size: 1.5rem;
  font-weight: 400;
}

.faq details[open] summary::after {
  content: "−";
}

.faq details p {
  max-width: 700px;
  padding: 0 54px 24px 0;
  color: var(--muted);
}

.closing {
  display: grid;
  justify-items: center;
  background: var(--navy);
  color: var(--white);
  text-align: center;
}

.closing img {
  width: 230px;
  height: 82px;
  margin-bottom: 50px;
  object-fit: cover;
  object-position: center;
}

.closing p {
  color: rgba(255, 255, 255, 0.6);
}

.closing h2 {
  max-width: 920px;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px var(--page-x);
  border-top: 1px solid var(--line-light);
  background: var(--navy);
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.72rem;
}

.mobile-cta {
  display: none;
}

.dialog-close {
  position: absolute;
  top: 16px;
  right: 18px;
  width: 44px;
  height: 44px;
  border: 0;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  font-size: 1.8rem;
}

@keyframes ticker-move {
  from {
    transform: translateX(0);
  }

  to {
    transform: translateX(-50%);
  }
}

@media (max-width: 960px) {
  h1 {
    font-size: 5rem;
  }

  h2 {
    font-size: 4rem;
  }

  .agenda-grid h3 {
    font-size: 2.5rem;
  }

  .site-header {
    grid-template-columns: 1fr auto;
  }

  .header-meta {
    display: none;
  }

  .hero {
    padding-top: 134px;
  }

  .hero h1 {
    font-size: 5rem;
  }

  .hero-video {
    width: 100%;
  }

  .mechanism,
  .authority-intro,
  .registration,
  .faq {
    grid-template-columns: 1fr;
  }

  .audience-grid,
  .proof-grid,
  .metric-strip {
    grid-template-columns: repeat(2, 1fr);
  }

  .metric-strip strong,
  .proof-grid strong {
    font-size: 3.5rem;
  }

  .authority-image {
    width: min(680px, 100%);
  }
}

@media (max-width: 680px) {
  body {
    padding-bottom: 64px;
    font-size: 16px;
  }

  .site-header {
    top: 42px;
    padding-top: 16px;
    padding-bottom: 16px;
  }

  .brand {
    width: 138px;
    height: 40px;
  }

  .header-cta {
    display: none;
  }

  .hero {
    min-height: auto;
    padding-top: 124px;
    padding-bottom: 36px;
  }

  .hero h1 {
    font-size: 3.05rem;
  }

  .hero-copy {
    font-size: 1rem;
  }

  h2 {
    font-size: 2.6rem;
  }

  h3 {
    font-size: 1.35rem;
  }

  .hero-content {
    margin-top: 0;
  }

  .hero-copy {
    font-size: 1rem;
  }

  .hero-video {
    width: 100%;
    max-width: none;
    margin-top: 34px;
  }

  .video-context {
    grid-template-columns: 1fr auto;
    gap: 8px 16px;
  }

  .video-context span:first-child {
    display: none;
  }

  .video-context strong {
    text-align: left;
  }

  .video-context span:last-child {
    font-size: 0.6rem;
  }

  .agenda-grid h3 {
    font-size: 2.1rem;
  }

  .hero-actions,
  .hero-actions .button {
    width: 100%;
  }

  .event-facts div {
    padding: 14px 10px 0;
    border-right: 1px solid rgba(255, 255, 255, 0.1);
  }

  .event-facts div:first-child {
    padding-left: 0;
  }

  .event-facts div:last-child {
    border-right: 0;
    padding-right: 0;
  }

  .event-facts dd {
    font-size: 0.78rem;
    line-height: 1.35;
  }

  .signal-list {
    grid-template-columns: 1fr;
  }

  .audience-grid,
  .proof-grid,
  .metric-strip {
    grid-template-columns: 1fr;
  }

  .metric-strip div {
    min-height: auto;
    padding-top: 26px;
    padding-bottom: 26px;
    border-right: 0;
    border-bottom: 1px solid var(--line-dark);
  }

  .audience-grid article,
  .proof-grid article {
    min-height: auto;
  }

  .metric-strip strong,
  .proof-grid strong {
    font-size: 3rem;
  }

  .authority-copy blockquote {
    font-size: 1.65rem;
  }

  .authority-intro {
    gap: 38px;
  }

  .authority-image {
    aspect-ratio: 16 / 11;
  }

  .authority-proof p {
    padding: 14px;
  }

  .authority-proof strong {
    font-size: 1.45rem;
  }

  .agenda-grid article {
    grid-template-columns: 64px 1fr;
  }

  .agenda-number {
    font-size: 2.6rem;
  }

  .map-row {
    grid-template-columns: 82px 1fr;
  }

  .map-row strong {
    font-size: 4rem;
  }

  .map-line {
    margin-left: 39px;
  }

  footer {
    display: grid;
  }

  .mobile-cta {
    position: fixed;
    z-index: 20;
    right: 0;
    bottom: 0;
    left: 0;
    display: flex;
    min-height: 64px;
    align-items: center;
    justify-content: center;
    background: var(--terracotta);
    color: var(--white);
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}