:root {
  --ink: #192a38;
  --ink-soft: #3e4b54;
  --paper: #f5f1e8;
  --paper-bright: #fffdf7;
  --line: #c8c4b9;
  --orange: #ed623f;
  --orange-dark: #b84229;
  --blue: #91c8e4;
  --yellow: #f1ce56;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --page: min(100% - 3rem, 1220px);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--orange-dark);
}

a:focus-visible {
  outline: 3px solid var(--orange);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.7rem 1rem;
  background: var(--paper-bright);
  border: 2px solid var(--ink);
  font-weight: 700;
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  min-height: 4.6rem;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 2rem;
  padding: 0 2.25rem;
  background: rgb(245 241 232 / 94%);
  border-bottom: 1px solid rgb(25 42 56 / 20%);
  backdrop-filter: blur(12px);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.site-nav {
  display: flex;
  justify-content: center;
  gap: clamp(1rem, 2.5vw, 2.5rem);
}

.site-nav a,
.header-action {
  font-size: 0.76rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.site-nav a {
  padding-block: 1rem;
  border-bottom: 2px solid transparent;
}

.site-nav a:hover {
  border-color: var(--orange);
}

.header-action {
  padding: 0.62rem 1.05rem;
  color: var(--paper-bright);
  background: var(--ink);
}

.header-action:hover {
  color: var(--ink);
  background: var(--yellow);
}

.hero {
  position: relative;
  min-height: min(760px, calc(100svh - 4.6rem));
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(17rem, 0.35fr);
  align-items: end;
  gap: 4rem;
  overflow: hidden;
  padding: clamp(6rem, 11vw, 9rem) max(1.5rem, calc((100% - 1220px) / 2)) clamp(4rem, 7vw, 6rem);
  color: var(--paper-bright);
  background: var(--ink);
}

.hero-copy,
.hero-aside {
  position: relative;
  z-index: 2;
}

.section-kicker,
.aside-label {
  margin: 0 0 1rem;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 850px;
  margin: 0 0 2.2rem;
  font-family: var(--serif);
  font-size: clamp(4rem, 9.6vw, 9rem);
  font-weight: 500;
  letter-spacing: -0.065em;
  line-height: 0.79;
}

.hero h1 em {
  color: var(--blue);
  font-weight: 400;
}

.hero h1 span {
  display: inline-block;
  color: var(--orange);
  font-family: var(--sans);
  font-size: 0.29em;
  font-style: normal;
  font-weight: 800;
  letter-spacing: -0.02em;
  vertical-align: top;
  transform: translateY(0.1em);
}

.hero-date,
.hero-place {
  margin: 0;
  font-size: clamp(1.1rem, 2vw, 1.5rem);
}

.hero-date {
  font-family: var(--serif);
  font-size: clamp(1.4rem, 2.6vw, 2.1rem);
}

.hero-place {
  color: rgb(255 253 247 / 68%);
}

.hero-aside {
  padding: 1.6rem 0 0 1.5rem;
  border-top: 6px solid var(--yellow);
}

.hero-aside p {
  margin: 0.55rem 0 0;
}

.hero-aside > p:last-child {
  font-family: var(--serif);
  font-size: 1.05rem;
  line-height: 1.5;
}

.hero-aside .aside-label {
  margin: 0;
  color: var(--blue);
}

.aside-name {
  font-family: var(--serif);
  font-size: clamp(2.2rem, 4vw, 3.7rem);
  line-height: 1.1;
}

.registration-strip {
  display: grid;
  grid-template-columns: minmax(18rem, 1fr) auto auto auto;
  align-items: center;
  gap: clamp(1.5rem, 3vw, 3rem);
  padding: 2.4rem max(1.5rem, calc((100% - 1220px) / 2));
  background: var(--blue);
  border-bottom: 1px solid var(--ink);
}

.registration-strip h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.5rem, 2.5vw, 2.25rem);
  line-height: 1.1;
}

.registration-strip .section-kicker {
  margin-bottom: 0.35rem;
}

.fee {
  display: grid;
  grid-template-columns: auto auto;
  column-gap: 0.7rem;
  align-items: baseline;
  min-width: 9.2rem;
  padding-left: 1.25rem;
  border-left: 1px solid rgb(25 42 56 / 40%);
}

.fee span {
  grid-column: 1 / -1;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.fee strong {
  font-family: var(--serif);
  font-size: 2rem;
  line-height: 1;
}

.fee small {
  font-size: 0.7rem;
  line-height: 1.2;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-width: 11rem;
  padding: 0.9rem 1.1rem;
  color: var(--paper-bright);
  background: var(--ink);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.button:hover {
  color: var(--ink);
  background: var(--yellow);
}

.registration-note {
  grid-column: 1 / -1;
  max-width: 920px;
  margin: -0.35rem 0 0;
  font-size: 0.82rem;
}

.section {
  width: var(--page);
  margin-inline: auto;
  padding-block: clamp(5rem, 10vw, 9rem);
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 3rem;
  padding-bottom: 1.2rem;
  border-bottom: 1px solid var(--ink);
}

.section-heading p:last-child {
  margin: 0 0 0.4rem;
  color: var(--ink-soft);
}

.section-kicker {
  color: var(--orange-dark);
}

.section h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(3rem, 7vw, 6.5rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 0.92;
}

.days {
  display: grid;
  gap: 4.5rem;
}

.day {
  display: grid;
  grid-template-columns: minmax(11rem, 0.28fr) 1fr;
  gap: clamp(2rem, 5vw, 5rem);
}

.day-header {
  position: sticky;
  top: 6.6rem;
  align-self: start;
}

.day-header span {
  display: inline-block;
  margin-bottom: 1rem;
  padding: 0.3rem 0.65rem;
  color: var(--paper-bright);
  background: var(--orange-dark);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.day-header h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2rem, 3.8vw, 3.4rem);
  font-weight: 500;
  line-height: 1;
}

.schedule {
  border-top: 2px solid var(--ink);
}

.schedule-item {
  display: grid;
  grid-template-columns: 9rem 1fr;
  gap: 1.6rem;
  padding: 2.1rem 0;
  border-bottom: 1px solid var(--line);
}

.schedule-item > time {
  padding-top: 0.12rem;
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.schedule-item h4 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 600;
  line-height: 1.15;
}

.schedule-item h4 span {
  display: block;
  margin-bottom: 0.15rem;
  color: var(--orange-dark);
  font-family: var(--sans);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.schedule-item.compact {
  padding-block: 1.25rem;
}

.schedule-item.compact h4 {
  font-family: var(--sans);
  font-size: 1rem;
  font-weight: 750;
}

.schedule-item.pause {
  background: linear-gradient(90deg, transparent 0 9rem, rgb(145 200 228 / 30%) 9rem 100%);
}

.schedule-item.dinner {
  background: linear-gradient(90deg, transparent 0 9rem, rgb(241 206 86 / 45%) 9rem 100%);
}

.papers {
  display: grid;
  gap: 0.9rem;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}

.papers li {
  color: var(--ink-soft);
  line-height: 1.45;
}

.papers cite {
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.06em;
}

.schedule-note,
.keynote-row p {
  margin: 0.5rem 0 0;
  color: var(--ink-soft);
  font-size: 0.86rem;
}

.keynote-row {
  position: relative;
}

.keynote-row::after {
  content: "";
  position: absolute;
  inset: 0 0 0 9rem;
  z-index: -1;
  background: rgb(237 98 63 / 12%);
}

.keynote-section {
  position: relative;
  display: grid;
  grid-template-columns: minmax(18rem, 0.38fr) 1fr;
  gap: clamp(3rem, 8vw, 8rem);
  width: auto;
  max-width: none;
  padding-inline: max(1.5rem, calc((100% - 1220px) / 2));
  color: var(--paper-bright);
  background: var(--ink);
}

.keynote-intro {
  position: relative;
  z-index: 2;
}

.keynote-intro .section-kicker {
  color: var(--blue);
}

.keynote-intro h2 {
  font-size: clamp(4rem, 7vw, 7.2rem);
}

.keynote-title {
  margin: 1.5rem 0 0;
  font-family: var(--serif);
  font-size: clamp(1.4rem, 2.3vw, 2rem);
  line-height: 1.25;
}

.keynote-abstract {
  max-width: 740px;
  padding-top: 2.2rem;
  font-family: var(--serif);
  font-size: clamp(1.12rem, 1.7vw, 1.38rem);
  line-height: 1.72;
}

.keynote-abstract p {
  margin: 0 0 1.55em;
}

.information-heading {
  margin-bottom: 3.5rem;
}

.information-grid {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 1px;
  background: var(--ink);
  border: 1px solid var(--ink);
}

.info-card {
  padding: clamp(2rem, 4vw, 4rem);
  background: var(--paper-bright);
}

.info-card h3 {
  margin: 0 0 1.4rem;
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 3.4rem);
  font-weight: 500;
  line-height: 1;
}

.info-card p {
  max-width: 68ch;
}

.muted {
  color: var(--ink-soft);
  font-size: 0.84rem;
}

.link-list {
  margin: 2rem 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.link-list li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--line);
}

.link-list span {
  display: block;
  color: var(--ink-soft);
  font-size: 0.78rem;
}

.travel-section {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: clamp(3rem, 8vw, 8rem);
  padding-top: 2rem;
}

.travel-heading h2 {
  max-width: 5ch;
}

.travel-copy {
  max-width: 760px;
  padding-top: 0.4rem;
  font-family: var(--sans);
  font-size: clamp(1.12rem, 1.6vw, 1.32rem);
  line-height: 1.75;
}

.travel-copy p {
  margin: 0 0 1.4em;
}

.travel-copy a {
  font-weight: 750;
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto auto auto;
  align-items: end;
  gap: 2rem;
  padding: 3rem max(1.5rem, calc((100% - 1220px) / 2));
  color: var(--paper-bright);
  background: var(--ink);
  font-size: 0.78rem;
}

.site-footer p {
  margin: 0;
}

.footer-title {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 3vw, 2.4rem);
}

.footer-title span {
  color: var(--orange);
}

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: auto 1fr;
    gap: 1.5rem;
    padding-inline: 1.5rem;
  }

  .site-nav {
    justify-content: end;
    overflow-x: auto;
  }

  .header-action {
    display: none;
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 3.5rem;
  }

  .hero-aside {
    max-width: 33rem;
  }

  .registration-strip {
    grid-template-columns: 1fr 1fr;
  }

  .registration-strip > div:first-child,
  .registration-strip .button {
    grid-column: auto;
  }

  .day {
    grid-template-columns: 1fr;
  }

  .day-header {
    position: static;
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
    gap: 1rem;
  }

  .day-header span {
    margin: 0;
  }

  .day-header h3 {
    font-size: clamp(1.7rem, 5vw, 2.5rem);
  }

  .keynote-section,
  .travel-section {
    grid-template-columns: 1fr;
  }

  .information-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 690px) {
  :root {
    --page: min(100% - 2rem, 1220px);
  }

  html {
    scroll-padding-top: 4.2rem;
  }

  .site-header {
    position: static;
    min-height: 4.2rem;
  }

  .site-nav {
    display: none;
  }

  .hero {
    padding-inline: 1rem;
    padding-top: 5rem;
  }

  .hero h1 {
    font-size: clamp(3.7rem, 19vw, 6rem);
  }

  .registration-strip {
    grid-template-columns: 1fr 1fr;
    padding-inline: 1rem;
  }

  .registration-strip > div:first-child,
  .registration-strip .button,
  .registration-note {
    grid-column: 1 / -1;
  }

  .fee {
    padding-left: 0;
    border-left: 0;
  }

  .section-heading {
    display: block;
  }

  .section-heading > p:last-child {
    margin-top: 1rem;
  }

  .schedule-item {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .schedule-item.pause,
  .schedule-item.dinner {
    background: rgb(145 200 228 / 30%);
  }

  .schedule-item.dinner {
    background: rgb(241 206 86 / 45%);
  }

  .keynote-row::after {
    inset: 0;
  }

  .keynote-section {
    padding-inline: 1rem;
  }

  .info-card {
    padding-inline: 1.35rem;
  }

  .site-footer {
    grid-template-columns: 1fr;
    padding-inline: 1rem;
  }
}

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

@media print {
  :root {
    --paper: #fff;
    --paper-bright: #fff;
    --ink: #000;
    --ink-soft: #222;
  }

  body {
    font-size: 10pt;
  }

  .site-header,
  .site-footer a,
  .button {
    display: none;
  }

  .hero {
    min-height: auto;
    padding: 2rem 0;
    color: #000;
    background: #fff;
    border-bottom: 2px solid #000;
  }

  .hero h1 {
    font-size: 52pt;
  }

  .hero-aside {
    border-color: #000;
  }

  .registration-strip {
    padding: 1.5rem 0;
    background: #fff;
  }

  .section,
  .keynote-section {
    width: 100%;
    padding: 2.5rem 0;
    color: #000;
    background: #fff;
  }

  .section h2 {
    font-size: 32pt;
  }

  .day-header {
    position: static;
  }

  .day,
  .keynote-section,
  .information-grid,
  .travel-section {
    grid-template-columns: 1fr;
  }

  .schedule-item,
  .info-card {
    break-inside: avoid;
  }

  a {
    color: #000;
  }
}