:root {
  --ink: #17242d;
  --muted: #5f6c72;
  --paper: #f6f4ef;
  --paper-deep: #ede9e0;
  --white: #fffefa;
  --navy: #192a34;
  --blue: #426779;
  --blue-light: #dce7e8;
  --rust: #a55f45;
  --line: #cbc9c0;
  --shell: min(1120px, calc(100% - 2.5rem));
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Helvetica Neue", "Hiragino Kaku Gothic ProN", "Yu Gothic", YuGothic, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

button,
summary { font: inherit; }

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.5rem;
  left: 0.5rem;
  padding: 0.65rem 0.9rem;
  color: white;
  background: var(--navy);
  transform: translateY(-160%);
}

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

:focus-visible {
  outline: 3px solid #d18b68;
  outline-offset: 3px;
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  color: white;
  background: rgba(25, 42, 52, 0.96);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(10px);
}

.header-inner {
  min-height: 4.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: white;
  font-size: 0.96rem;
  font-weight: 650;
  text-decoration: none;
}

.brand-mark {
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  font-size: 0.65rem;
  letter-spacing: 0.04em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.8rem;
}

.site-nav a {
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
}

.site-nav a:hover { color: white; }

.menu-button {
  display: none;
  padding: 0.35rem 0.6rem;
  color: white;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 0.2rem;
}

.hero {
  --hero-shift: 0px;
  position: relative;
  isolation: isolate;
  overflow: hidden;
  color: white;
  background-color: var(--navy);
}

.hero::before,
.hero::after {
  position: absolute;
  z-index: -1;
  content: "";
  pointer-events: none;
}

.hero::before {
  inset: -18% 0;
  background: url("../img/IMG_5170-web.jpg") center 38% / cover no-repeat;
  transform: translate3d(0, var(--hero-shift), 0) scale(1.01);
  will-change: transform;
}

.hero::after {
  inset: 0;
  background: linear-gradient(90deg, rgba(15, 30, 38, 0.93) 0%, rgba(15, 30, 38, 0.8) 54%, rgba(15, 30, 38, 0.68) 100%);
}

.hero-grid {
  position: relative;
  z-index: 1;
  min-height: 35rem;
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(17rem, 0.55fr);
  align-items: end;
  gap: clamp(3rem, 8vw, 7rem);
  padding-block: clamp(6rem, 12vw, 9rem) clamp(4.5rem, 8vw, 6.5rem);
}

.eyebrow {
  margin: 0 0 1.1rem;
  color: var(--rust);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero .eyebrow { color: #d6a086; }

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

h1 {
  max-width: 16ch;
  margin-bottom: 1.5rem;
  font-size: clamp(2.7rem, 5.2vw, 4.6rem);
  font-weight: 520;
  letter-spacing: -0.055em;
  line-height: 0.98;
}

.hero-lead {
  max-width: 42rem;
  margin-bottom: 0.9rem;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(1.05rem, 2vw, 1.3rem);
}

.hero-ja {
  max-width: 42rem;
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.58);
  font-size: 0.9rem;
}

.series-card {
  padding-top: 1.35rem;
  border-top: 1px solid rgba(255, 255, 255, 0.36);
}

.series-label {
  margin-bottom: 1.25rem;
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.series-card dl { margin: 0; }

.series-card dl > div {
  display: grid;
  grid-template-columns: 5.5rem 1fr;
  gap: 1rem;
  padding-block: 0.65rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.series-card dt {
  color: rgba(255, 255, 255, 0.48);
  font-size: 0.72rem;
}

.series-card dd {
  margin: 0;
  font-size: 0.82rem;
}

.section { padding-block: clamp(4.5rem, 9vw, 7.5rem); }

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

.section-grid,
.archive-layout,
.about-grid {
  display: grid;
  grid-template-columns: minmax(12rem, 0.42fr) minmax(0, 1.08fr);
  gap: clamp(3rem, 9vw, 8rem);
}

.hero-grid > *,
.section-grid > *,
.archive-layout > *,
.about-grid > *,
.recent-grid > *,
.archive-content,
.event-card {
  min-width: 0;
}

.section-heading h2 {
  margin-bottom: 0;
  font-size: clamp(2rem, 4vw, 3.4rem);
  font-weight: 520;
  letter-spacing: -0.045em;
  line-height: 1.06;
}

.inline-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.text-link {
  color: var(--blue);
  font-size: 0.82rem;
  font-weight: 650;
  text-underline-offset: 0.25em;
}

.event-card {
  padding-block: 1.5rem;
  border-top: 1px solid var(--line);
}

.event-card h3,
.empty-state h3 {
  max-width: 48rem;
  margin-bottom: 0.55rem;
  font-size: clamp(1.15rem, 2.2vw, 1.55rem);
  font-weight: 580;
  letter-spacing: -0.025em;
  line-height: 1.25;
  overflow-wrap: anywhere;
}

.event-card-featured {
  padding: clamp(1.6rem, 4vw, 2.5rem);
  background: var(--white);
  border-top: 4px solid var(--blue);
  box-shadow: 0 18px 50px rgba(37, 48, 53, 0.08);
}

.event-card-featured h3 { font-size: clamp(1.5rem, 3.2vw, 2.4rem); }

.event-date {
  display: block;
  margin-bottom: 0.55rem;
  color: var(--rust);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.event-speaker {
  margin-bottom: 1.1rem;
  color: var(--blue);
  font-size: 0.9rem;
  font-weight: 620;
  overflow-wrap: anywhere;
}

.event-meta {
  display: grid;
  grid-template-columns: minmax(7rem, 0.6fr) minmax(12rem, 1.5fr) minmax(6rem, 0.5fr);
  gap: 0.75rem 1.5rem;
  margin: 0;
}

.event-meta > div { min-width: 0; }

.event-meta dt {
  color: var(--muted);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.event-meta dd {
  margin: 0.15rem 0 0;
  font-size: 0.78rem;
  overflow-wrap: anywhere;
}

.registration-link {
  display: inline-block;
  margin-top: 1.25rem;
  padding: 0.65rem 0.9rem;
  color: white;
  background: var(--blue);
  font-size: 0.8rem;
  font-weight: 650;
  text-decoration: none;
}

.abstract-details { margin-top: 1.15rem; }

.abstract-details summary {
  width: fit-content;
  color: var(--blue);
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 650;
  list-style-position: outside;
}

.abstract-body {
  max-width: 48rem;
  padding: 1rem 0 0 1.1rem;
  border-left: 2px solid var(--blue-light);
}

.abstract-body p {
  margin-bottom: 0.8rem;
  color: var(--muted);
  font-size: 0.86rem;
}

.event-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
}

.event-links a {
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 650;
}

.empty-state {
  padding: clamp(1.7rem, 4vw, 2.7rem);
  background: var(--white);
  border-top: 4px solid var(--blue);
}

.empty-state > p:not(.event-date) {
  max-width: 40rem;
  color: var(--muted);
}

.recent-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2rem;
}

.event-card-compact .event-meta { grid-template-columns: 1fr; }

.event-card-compact h3 { font-size: 1.15rem; }

.archive-heading > p:last-child {
  max-width: 20rem;
  margin-top: 1.25rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.year-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
}

.year-filter button {
  padding: 0.45rem 0.75rem;
  color: var(--blue);
  background: transparent;
  border: 1px solid #aab5b8;
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.75rem;
  font-weight: 650;
}

.year-filter button[aria-pressed="true"] {
  color: white;
  background: var(--blue);
  border-color: var(--blue);
}

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

.about-section .eyebrow { color: #d6a086; }

.about-copy p {
  max-width: 48rem;
  color: rgba(255, 255, 255, 0.73);
}

.about-copy a {
  color: white;
  text-underline-offset: 0.2em;
}

.site-footer {
  padding-block: 2.6rem;
  color: rgba(255, 255, 255, 0.64);
  background: #111d24;
  font-size: 0.75rem;
}

.footer-inner {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
}

.footer-inner p { margin-bottom: 0; }

.footer-brand {
  color: white;
  font-size: 0.9rem;
  font-weight: 650;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: end;
  gap: 1rem 1.5rem;
}

.footer-links a { text-underline-offset: 0.2em; }

.loading-note,
.noscript-note {
  color: var(--muted);
  font-size: 0.85rem;
}

@media (max-width: 820px) {
  :root { --shell: min(44rem, calc(100% - 2rem)); }

  .menu-button { display: block; }

  .site-nav {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    display: none;
    align-items: stretch;
    flex-direction: column;
    gap: 0;
    padding: 0.75rem 1rem 1rem;
    background: var(--navy);
    border-top: 1px solid rgba(255, 255, 255, 0.12);
  }

  .site-nav.is-open { display: flex; }

  .site-nav a {
    padding: 0.7rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .hero-grid,
  .section-grid,
  .archive-layout,
  .about-grid {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    min-height: auto;
    align-items: start;
    gap: 3.5rem;
  }

  .hero::before {
    background-position: 52% 36%;
    background-size: auto 125%;
  }

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

  .event-meta { grid-template-columns: 1fr; }

  .inline-heading {
    align-items: start;
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  h1 { font-size: 2.65rem; }

  .header-inner { min-height: 4rem; }

  .section { padding-block: 4rem; }

  .footer-inner {
    align-items: start;
    flex-direction: column;
  }

  .footer-links {
    justify-content: start;
    flex-direction: column;
  }
}

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

  .hero::before {
    transform: scale(1.01);
    will-change: auto;
  }
}