:root {
  color-scheme: light;
  --ink: #202b37;
  --muted: #5c6672;
  --accent: #b64c06;
  --line: #e3e6e9;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: #fff; color: var(--ink); font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif; }
a { color: #1e5d91; text-underline-offset: .2em; }
a:hover { color: var(--accent); }
a:focus-visible { outline: 3px solid #e57c32; outline-offset: 4px; }
p { margin: 0 0 1rem; }
h1, h2, h3 { line-height: 1.2; }
h1 { margin: .7rem 0 1.5rem; font-size: clamp(2.8rem, 7vw, 5rem); letter-spacing: -.045em; }
h2 { margin: .5rem 0 1.5rem; font-size: clamp(1.8rem, 4vw, 2.4rem); letter-spacing: -.025em; }
h3 { margin: 0 0 .6rem; font-size: 1.15rem; }
.container { width: min(1080px, calc(100% - 48px)); margin: 0 auto; }
.skip-link { position: absolute; top: -100px; left: 16px; z-index: 10; background: white; padding: 12px; }
.skip-link:focus { top: 16px; }
.hero { padding: 60px 0 28px; color: #fff; background: linear-gradient(120deg, #132e44, #263645 70%, #504038); }
.eyebrow { color: #ffb372; font-size: .85rem; font-weight: 700; letter-spacing: .13em; text-transform: uppercase; }
.conference { font-size: 1.2rem; font-weight: 600; }
.hero-note { color: #d6dfe7; }
nav { display: flex; flex-wrap: wrap; gap: 12px 26px; }
.hero nav { margin-top: 2.5rem; padding-top: 1.3rem; border-top: 1px solid #ffffff30; }
.hero nav a { color: #fff; font-size: .95rem; text-decoration: none; }
.hero nav a:hover { color: #ffb372; }
main section { padding: 48px 0; border-bottom: 1px solid var(--line); scroll-margin-top: 24px; }
.section-label { margin: 0; color: var(--accent); font-size: .8rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
main .notice { margin-top: 32px; padding: 22px 26px; background: #fff6ea; border: 1px solid #efd9bc; border-left: 4px solid #e67c2f; }
.notice h2 { font-size: 1.15rem; margin: 0 0 .75rem; }
.notice p:last-child { margin-bottom: 0; }
.topics { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; margin-top: 32px; }
.topics article { border-top: 2px solid #e58b47; padding-top: 20px; }
.topics p { font-size: .95rem; color: var(--muted); }
.speaker { display: grid; grid-template-columns: 1fr 1.5fr; gap: 32px; background: #f4f7f9; border: 1px solid var(--line); padding: 28px; margin-bottom: 20px; }
.speaker h3 { font-size: 1.6rem; }
.affiliation { color: var(--muted); }
.status { display: inline-block; padding: 2px 9px; border-radius: 4px; color: #276044; background: #e1f0e7; font-size: .8rem; font-weight: 600; }
.muted { color: var(--muted); font-size: .95rem; }
.organizers { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px 32px; padding: 0; list-style: none; }
.organizers li { padding: 20px 0; border-top: 1px solid var(--line); }
.organizers h3 a { text-decoration: none; }
.organizers p { margin: 0 0 .4rem; color: var(--muted); font-size: .95rem; }
.organizers .role { color: var(--accent); font-size: .8rem; font-weight: 600; }
.contact { font-size: .85rem; overflow-wrap: anywhere; }
footer { margin-top: 32px; padding: 30px 0; background: #f5f6f7; font-size: .9rem; }
.footer-inner > p { margin-bottom: 12px; }
.license { margin-top: 20px; color: var(--muted); font-size: .8rem; }
.edition-list { list-style: none; padding: 0; }
.edition-list li { padding: 24px 0; border-bottom: 1px solid var(--line); }
.edition-list h2 { font-size: 1.6rem; margin: 0 0 10px; }
@media (max-width: 700px) {
  .container { width: calc(100% - 36px); }
  .hero { padding-top: 40px; }
  .topics, .speaker { grid-template-columns: 1fr; gap: 18px; }
  .organizers { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 22px; }
  main section { padding: 34px 0; }
  .speaker { padding: 22px; }
}
@media (max-width: 420px) {
  .organizers { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}