/* The current edition has its own styles so the 2025 archive keeps its identity. */
.edition-current {
  /* Keep the original dark and purple palette inherited from style.css. */
  color-scheme: dark;
  --sans: Arial, Helvetica, sans-serif;
  --mono: Arial, Helvetica, sans-serif;
  font-size: 17px;
}
.edition-current h1,
.edition-current h2 { font-family: Georgia, 'Times New Roman', serif; font-weight: 400; letter-spacing: -.025em; line-height: 1.08; }
.edition-current h1 { font-size: clamp(2.6rem, 5.4vw, 4.7rem); }
.edition-current h2 { font-size: clamp(2rem, 3.6vw, 3rem); }
.edition-current h3 { line-height: 1.3; letter-spacing: -.015em; }
.edition-current .eyebrow { font-size: .88rem; font-weight: 600; letter-spacing: 0; text-transform: none; }
.edition-current .section { padding-block: clamp(3rem, 6vw, 5rem); }
.edition-current .site-header { background: var(--bg); backdrop-filter: none; }
.edition-current .header-inner { min-height: 90px; }
.edition-current .brand { min-width: 0; }
.edition-current .brand-mark { display: none; }
.edition-current .brand-name strong { font-size: 1.02rem; letter-spacing: 0; }
.edition-current .brand-name span { margin-top: .4rem; font-size: .8rem; letter-spacing: 0; }
.edition-current .primary-navigation { gap: 1.5rem; }
.edition-current .primary-navigation > a { color: var(--text); font-size: .9rem; }
.edition-current .primary-navigation > .button { color: #fff; }
.edition-current .header-register { display: none; }
.edition-current .button { border-radius: 3px; font-size: .95rem; }
.edition-current .button:hover { border-color: #a970ff; background: #a970ff; }
.edition-current .button-secondary { border-color: var(--line-strong); background: transparent; }
.edition-current .button-secondary:hover { border-color: var(--text); background: transparent; }
.edition-current .hero { padding: clamp(2rem, 4vw, 3rem) 0 clamp(5rem, 9vw, 8rem); }
.edition-current .hero-inner { max-width: 52rem; }
.edition-current .hero h1 { max-width: 18ch; text-wrap: initial; }
.edition-current .hero h1 span { display: block; }
.edition-current .hero-lede { max-width: 42rem; margin-top: 1.25rem; font-size: 1.1rem; line-height: 1.75; }
.edition-current .hero-actions { margin-top: 1.5rem; }
.edition-current .hero-facts { margin-top: 1.75rem; gap: .75rem 2rem; }
.edition-current .hero-facts li { padding: 0; color: var(--text); font-size: .85rem; }
.edition-current .hero-facts li::before { display: none; }
.edition-current .hero-skyline { display: block; }
.edition-current .supporters { background: var(--bg-alt); padding: 2rem 0; }
.edition-current .supporters .eyebrow { color: var(--muted); text-align: center; font-size: .8rem; font-weight: 400; }
.edition-current .supporter-card { gap: 2rem 4rem; padding: 1.5rem; }
.edition-current .supporter-card .logo-kcl { height: 64px; }
.edition-current .supporter-card .logo-kq { height: 44px; }
.edition-current .supporter-card .logo-imperial { width: 176px; height: auto; max-height: 60px; }
.edition-current .supporter-card .logo-ucl { width: 148px; height: auto; max-height: 60px; }
.edition-current .about-grid { gap: 4rem; }
.edition-current .about-copy p { line-height: 1.8; }
.edition-current .about-facts dt { font-size: .88rem; font-weight: 600; text-transform: none; letter-spacing: 0; }
.edition-current .about-facts dd { line-height: 1.7; }
.edition-current .edition-archive { padding-block: 3rem; background: var(--bg-alt); }
.edition-current .archive-grid { grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: 3rem; }
.edition-current .archive-copy .eyebrow { margin-bottom: .5rem; }
.edition-current .archive-copy h2 { font-size: 1.65rem; }
.edition-current .archive-copy h2 span { display: inline; color: var(--text); font-size: inherit; }
.edition-current .archive-copy p:not(.eyebrow) { max-width: 65ch; font-size: .92rem; }
.edition-current .archive-video-link { display: flex; flex-direction: column; align-items: flex-start; min-height: 0; padding: 1rem 0; border: 0; background: transparent; text-align: left; }
.edition-current .archive-video-link:hover { background: transparent; }
.edition-current .archive-video-link strong { margin: 0; font-size: .95rem; color: var(--accent-soft); text-decoration: underline; }
.edition-current .archive-video-link span { font-size: .8rem; }
.edition-current .archive-arrow { display: none; }
.edition-current .programme { background: var(--bg); }
.edition-current .programme .section-head { grid-template-columns: 1fr; }
.edition-current .section-head { margin-bottom: 3rem; }
.edition-current .section-head .lede { max-width: 46ch; font-size: 1rem; }
.edition-current .data-note { border-color: var(--line-strong); font-size: .9rem; }

/* Last year's two-column timeline: dates above titles, readable detail below. */
.timeline-columns { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4rem; }
.timeline-column-title { margin: 0 0 1.5rem; padding-bottom: .85rem; border-bottom: 1px solid var(--line-strong); font-size: 1.2rem; font-weight: 700; color: #e8c7ff; }
.timeline { margin-left: 1.2rem; border-left: 2px solid var(--accent); }
.edition-current .timeline-item { position: relative; display: block; padding: 0 0 2.5rem 2.4rem; background: transparent; }
.edition-current .timeline-item:last-child { padding-bottom: .25rem; }
.edition-current .timeline-item:hover { background: transparent; }
.timeline-marker { position: absolute; top: 0; left: -1.25rem; width: 2.4rem; height: 2.4rem; display: grid; place-items: center; border: 2px solid var(--accent); border-radius: 50%; background: #241637; color: #fff; font-size: .85rem; font-weight: 700; }
.edition-current .timeline-content { padding: 1.25rem; background: #171721; border: 1px solid #41414e; }
.edition-current .timeline-item .session-date { display: inline-block; margin: 0 0 1rem; padding: .3rem .55rem; background: #172b46; font-size: .9rem; font-weight: 700; color: #b5d5ff; letter-spacing: 0; }
.edition-current .timeline-item h3 { margin: 0 0 .75rem; font-family: var(--sans); font-size: 1.4rem; font-weight: 700; color: #fff; line-height: 1.3; }
.edition-current .session-programme { margin-bottom: 1rem; }
.edition-current .session-speaker { margin: 0 0 .65rem; font-family: var(--sans); color: #b5d5ff; font-size: .95rem; font-weight: 600; line-height: 1.6; }
.edition-current .session-summary { margin-bottom: 1rem; color: #d4d4df; font-size: .95rem; line-height: 1.65; white-space: pre-line; }
.edition-current .session-room { margin-bottom: 0; color: var(--text); font-size: .95rem; font-weight: 600; }
.edition-current .organisers { background: var(--bg-alt); }
.edition-current .organiser-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.75rem 2rem; margin-top: 2rem; border: 0; background: transparent; }
.edition-current .organiser { display: grid; grid-template-columns: 4rem minmax(0, 1fr); align-items: start; gap: 1rem; padding: 0; background: transparent; box-shadow: none; }
.edition-current .organiser-photo { display: block; width: 4rem; height: 4rem; margin: 0; border-radius: 50%; overflow: hidden; }
.edition-current .organiser-photo-lyan img { position: absolute; width: 300%; height: auto; left: -188%; top: -230%; }
.edition-current .organiser-photo-maria img { position: absolute; width: 180%; height: auto; left: -47%; top: -85%; }
.edition-current .organiser h3 { font-size: 1rem; }
.edition-current .organiser p { max-width: 30ch; margin-bottom: .3rem; font-size: .82rem; line-height: 1.5; }
.edition-current .organiser .organiser-role { text-transform: none; letter-spacing: 0; font-size: .8rem; }
.edition-current .organiser .organiser-affiliation { font-size: .8rem; font-weight: 400; }
.edition-current .organiser-link { margin-top: .25rem; font-size: .8rem; }
.edition-current .organiser-photo-placeholder { background: var(--panel); border: 0; }
.edition-current .organiser-photo-placeholder::before,
.edition-current .organiser-photo-placeholder::after { background: var(--line-strong); }
.edition-current .organiser-photo-placeholder::before { top: .6rem; width: 1.25rem; height: 1.25rem; }
.edition-current .organiser-photo-placeholder::after { bottom: -.9rem; width: 3.25rem; height: 2.75rem; }
.edition-current .registration-form { border: 1px solid var(--line); background: var(--panel); }
.edition-current .form-field input,
.edition-current .form-field select,
.edition-current .form-field textarea { background: var(--bg); border-radius: 2px; }
.edition-current .form-field select { color-scheme: dark; }
.edition-current #recaptcha-widget { max-width: 100%; overflow-x: auto; }
.edition-current .faq { background: var(--bg); }
.edition-current .faq summary { font-size: 1rem; }
.edition-current .site-footer { background: var(--bg-alt); }
.edition-current .footer-grid p { max-width: 44rem; line-height: 1.7; }
.edition-current .content-prose h2 { font-size: 1.55rem; }
.edition-current .skip-link { transform: translateY(calc(-100% - 1rem)); }
.edition-current .skip-link:focus { transform: none; }
@media (max-width: 1000px) {
  .timeline-columns { gap: 2rem; }
}
@media (max-width: 880px) {
  .edition-current .header-inner { min-height: 72px; gap: .6rem; }
  .edition-current .header-inner .brand { margin-right: auto; }
  .edition-current .header-register { display: inline-flex; flex: none; min-height: 44px; padding: .5rem .75rem; font-size: .85rem; }
  .edition-current .primary-navigation { gap: 0; }
  .edition-current .archive-grid { grid-template-columns: 1fr; gap: 2rem; }
  .edition-current .about-grid { gap: 2rem; }
  .edition-current .organiser-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 600px) {
  .edition-current .brand-name strong { font-size: .85rem; }
  .edition-current .brand-name span { display: none; }
  .edition-current .menu-toggle { flex: none; }
  .edition-current .section { padding-block: 2rem; }
  .edition-current .hero { padding-top: 1.5rem; padding-bottom: 10rem; }
  .edition-current .hero h1 { font-size: clamp(2.1rem, 9.5vw, 3rem); }
  .edition-current .hero .eyebrow { font-size: .8rem; margin-bottom: .65rem; }
  .edition-current .hero-lede { margin-block: 1rem; font-size: 1rem; line-height: 1.6; }
  .edition-current .hero-actions { grid-template-columns: 1fr 1fr; gap: .5rem; margin-top: 1rem; }
  .edition-current .hero-actions .button { padding: .6rem .5rem; font-size: .85rem; }
  .edition-current .hero-facts { margin-top: 1.25rem; gap: .35rem 1rem; padding-top: .75rem; }
  .edition-current .hero-facts li { flex: 0 1 auto; font-size: .78rem; }
  .edition-current .hero-skyline { height: 200px; overflow: hidden; }
  .edition-current .hero-skyline img { position: absolute; bottom: 0; left: 50%; width: max(100%, 760px); max-width: none; transform: translate(-50%, 22.5%); }
  .edition-current .supporters { padding-block: 1.25rem; }
  .edition-current .supporter-card { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; padding: 1.25rem .75rem; }
  .edition-current .supporter-card .logo-kcl { height: 48px; }
  .edition-current .supporter-card .logo-imperial { width: min(100%, 145px); }
  .edition-current .supporter-card .logo-ucl { width: min(100%, 125px); }
  .timeline-columns { grid-template-columns: 1fr; gap: 2.5rem; }
  .edition-current .timeline-item { padding-left: 2rem; }
  .edition-current .timeline-content { padding: 1rem; }
  .edition-current .timeline-item h3 { font-size: 1.4rem; }
  .edition-current .section-head { margin-bottom: 1.5rem; gap: 1rem; }
  .edition-current .about-grid { gap: 1.25rem; }
  .edition-current .about-copy p { line-height: 1.6; }
  .edition-current .about-facts > div { padding-block: .6rem; }
  .edition-current .organiser-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem 1rem; margin-top: 1.25rem; }
  .edition-current .organiser { display: block; }
  .edition-current .organiser-photo { width: 3rem; height: 3rem; margin-bottom: .5rem; }
  .edition-current .organiser-photo-placeholder::before { top: .45rem; width: 1rem; height: 1rem; }
  .edition-current .organiser-photo-placeholder::after { width: 2.75rem; height: 2.25rem; }
  .edition-current .organiser h3 { font-size: .95rem; }
}
@media (max-width: 359px) {
  .edition-current .organiser-grid { grid-template-columns: 1fr; }
  .edition-current .organiser { display: grid; grid-template-columns: 3rem minmax(0, 1fr); }
  .edition-current .organiser-photo { margin-bottom: 0; }
}