:root {
  --ink: #123a36;
  --ink-deep: #0a2926;
  --jade: #1d5a50;
  --sage: #9ab7a5;
  --cream: #f4efe4;
  --paper: #fffdf8;
  --gold: #d49b48;
  --peach: #e7b58a;
  --line: rgba(18, 58, 54, 0.24);
  --serif: Georgia, "Times New Roman", serif;
  --sans: Arial, Helvetica, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--cream);
  color: var(--ink-deep);
  font-family: var(--sans);
  line-height: 1.6;
  margin: 0;
}

a {
  color: var(--jade);
}

.conference-header {
  background: var(--ink);
  color: var(--paper);
}

#header-placeholder {
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-inner {
  align-items: center;
  display: flex;
  gap: 42px;
  justify-content: space-between;
  margin: 0 auto;
  max-width: 1200px;
  min-height: 72px;
  padding: 14px 28px;
}

.site-name {
  color: var(--paper);
  flex: 0 0 auto;
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: bold;
  text-decoration: none;
}

.site-name span {
  color: var(--gold);
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  justify-content: flex-end;
}

nav a {
  color: var(--paper);
  font-size: 0.86rem;
  text-decoration: none;
}

nav a:hover,
nav a:focus-visible {
  text-decoration: underline;
}

.title-section {
  display: grid;
  gap: 55px;
  grid-template-columns: minmax(0, 1.2fr) minmax(310px, 0.8fr);
  margin: 0 auto;
  max-width: 1200px;
  padding: 75px 28px 80px;
}

.title-copy {
  align-self: center;
}

.conference-number {
  color: var(--jade);
  font-size: 1rem;
  font-weight: bold;
  letter-spacing: 0.08em;
  margin: 0 0 14px;
  text-transform: uppercase;
}

h1,
h2,
h3,
h4 {
  line-height: 1.2;
}

h1 {
  color: var(--ink-deep);
  font-family: var(--serif);
  font-size: clamp(2.5rem, 5vw, 4.2rem);
  font-weight: normal;
  margin: 0;
  max-width: 760px;
}

.title-place {
  color: var(--jade);
  font-family: var(--serif);
  font-size: 1.35rem;
  margin: 30px 0 4px;
}

.title-date {
  font-size: 1.05rem;
  font-weight: bold;
  margin: 0;
}

.image-placeholder {
  align-items: center;
  background:
    linear-gradient(45deg, rgba(18, 58, 54, 0.035) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(18, 58, 54, 0.035) 25%, transparent 25%),
    var(--paper);
  background-position: 0 0, 12px 12px;
  background-size: 24px 24px;
  border: 2px dashed var(--jade);
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 360px;
  padding: 35px;
  text-align: center;
}

.placeholder-symbol {
  align-items: center;
  border: 1px solid var(--jade);
  border-radius: 50%;
  color: var(--jade);
  display: flex;
  font-family: var(--serif);
  font-size: 2rem;
  height: 60px;
  justify-content: center;
  margin-bottom: 20px;
  width: 60px;
}

.image-placeholder p {
  font-family: var(--serif);
  font-size: 1.35rem;
  margin: 0 0 8px;
}

.image-placeholder span {
  color: var(--jade);
  font-size: 0.85rem;
  max-width: 280px;
}

.content-section {
  margin: 0 auto;
  max-width: 1200px;
  padding: 70px 28px;
  scroll-margin-top: 120px;
}

.content-section > h2 {
  border-bottom: 3px solid var(--gold);
  color: var(--ink-deep);
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: normal;
  margin: 0 0 35px;
  padding-bottom: 10px;
}

.about-section,
.award-section {
  background: var(--paper);
  max-width: none;
  padding-left: max(28px, calc((100vw - 1144px) / 2));
  padding-right: max(28px, calc((100vw - 1144px) / 2));
}

.about-text,
.award-intro {
  font-family: var(--serif);
  font-size: 1.1rem;
  max-width: 900px;
}

.about-text p,
.award-intro p {
  margin: 0 0 18px;
}

.previous-link,
.award-link {
  font-family: var(--sans);
  font-size: 0.95rem;
  font-weight: bold;
  margin-top: 28px;
}

.meeting-grid,
.organisation-grid {
  display: grid;
  gap: 30px;
  grid-template-columns: 1fr 1fr;
}

.meeting-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-top: 7px solid var(--jade);
  padding: 32px;
}

.meeting-card:nth-child(2) {
  border-top-color: var(--gold);
}

.meeting-type {
  color: var(--jade);
  font-size: 0.82rem;
  font-weight: bold;
  letter-spacing: 0.08em;
  margin: 0 0 7px;
  text-transform: uppercase;
}

.meeting-card h3 {
  font-family: var(--serif);
  font-size: 1.65rem;
  font-weight: normal;
  margin: 0 0 7px;
}

.meeting-date {
  font-size: 1.15rem;
  font-weight: bold;
  margin: 0 0 28px;
}

.meeting-card dl {
  border-top: 1px solid var(--line);
  display: grid;
  gap: 25px;
  grid-template-columns: 1fr 1fr;
  margin: 0;
  padding-top: 20px;
}

.meeting-card dt,
.award-details dt {
  color: var(--jade);
  font-size: 0.78rem;
  font-weight: bold;
  text-transform: uppercase;
}

.meeting-card dd,
.award-details dd {
  margin: 2px 0 0;
}

.speakers-section {
  background: var(--jade);
  color: var(--paper);
  max-width: none;
  padding-left: max(28px, calc((100vw - 1144px) / 2));
  padding-right: max(28px, calc((100vw - 1144px) / 2));
}

.speakers-section > h2 {
  border-color: var(--peach);
  color: var(--paper);
}

.simple-columns {
  display: grid;
  gap: 22px;
  grid-template-columns: 1fr;
}

.simple-columns > div {
  background: rgba(255, 253, 248, 0.08);
  border: 1px solid rgba(255, 253, 248, 0.35);
  padding: 28px;
}

.simple-columns h3,
.organisation-grid h3,
.award-block h3,
.recipients-heading {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: normal;
  margin: 0 0 22px;
}

.to-come {
  font-style: italic;
  margin: 0;
}

.award-grid {
  display: grid;
  gap: 28px;
  grid-template-columns: 1fr 1fr;
  margin-top: 35px;
}

.award-block {
  background: var(--cream);
  border: 1px solid var(--line);
  padding: 28px;
}

.award-block ul {
  list-style: square;
  margin: 0;
  padding-left: 20px;
}

.award-block li {
  margin: 7px 0;
}

.award-details dl {
  margin: 0;
}

.award-details dl > div + div {
  border-top: 1px solid var(--line);
  margin-top: 14px;
  padding-top: 14px;
}

.award-details dd {
  font-style: italic;
}

.award-format {
  border-left: 4px solid var(--gold);
  font-family: var(--serif);
  font-size: 1.05rem;
  margin: 34px 0;
  max-width: 900px;
  padding-left: 20px;
}

.recipients-heading {
  margin-top: 40px;
}

.recipient-list {
  column-gap: 45px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  list-style: square;
  margin: 0;
  padding-left: 20px;
}

.recipient-list li {
  margin: 5px 0;
}

.organisation-grid {
  align-items: start;
  grid-template-columns: 1.25fr 0.75fr;
}

.organisation-grid > div {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 30px;
}

.organiser-group + .organiser-group {
  border-top: 1px solid var(--line);
  margin-top: 25px;
  padding-top: 22px;
}

.organiser-group h4 {
  color: var(--jade);
  font-size: 0.9rem;
  margin: 0 0 9px;
}

.organiser-group ul {
  list-style: square;
  margin: 0;
  padding-left: 20px;
}

.organiser-group li {
  margin: 4px 0;
}

.practical-section {
  background: var(--peach);
  max-width: none;
  padding-left: max(28px, calc((100vw - 1144px) / 2));
  padding-right: max(28px, calc((100vw - 1144px) / 2));
}

.practical-section p,
.contact-section p {
  font-family: var(--serif);
  font-size: 1.1rem;
  margin: 0;
  max-width: 800px;
}

.contact-section {
  background: var(--cream);
  max-width: none;
  padding-left: max(28px, calc((100vw - 1144px) / 2));
  padding-right: max(28px, calc((100vw - 1144px) / 2));
}

.contact-section a {
  font-weight: bold;
}

footer {
  align-items: center;
  background: var(--ink-deep);
  color: var(--paper);
  display: flex;
  justify-content: space-between;
  min-height: 120px;
  padding: 28px max(28px, calc((100vw - 1144px) / 2));
}

footer strong {
  font-family: var(--serif);
}

footer p {
  font-size: 0.84rem;
  margin: 5px 0 0;
}

footer a {
  color: var(--paper);
  font-size: 0.85rem;
}

@media (max-width: 900px) {
  .header-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  nav {
    justify-content: flex-start;
  }

  .title-section {
    gap: 38px;
    grid-template-columns: 1fr;
  }

  .image-placeholder {
    min-height: 280px;
  }
}

@media (max-width: 680px) {
  .header-inner {
    padding: 18px 20px;
  }

  nav {
    display: flex;
    flex-wrap: nowrap;
    gap: 18px;
    overflow-x: auto;
    padding-bottom: 4px;
    width: 100%;
  }

  nav a {
    white-space: nowrap;
  }

  .title-section {
    padding: 50px 20px 55px;
  }

  h1 {
    font-size: 2.45rem;
  }

  .content-section,
  .about-section,
  .speakers-section,
  .award-section,
  .practical-section,
  .contact-section {
    padding: 55px 20px;
  }

  .meeting-grid,
  .simple-columns,
  .organisation-grid,
  .award-grid,
  .recipient-list {
    grid-template-columns: 1fr;
  }

  .meeting-card {
    padding: 25px;
  }

  .meeting-card dl {
    grid-template-columns: 1fr;
  }

  footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 22px;
    padding: 28px 20px;
  }
}

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