:root {
  --navy: #d7e4f4;
  --navy-deep: #f3f6fb;
  --navy-mid: #8ec4ef;
  --blue: #5eb0e8;
  --unesco: #3d9be0;
  --gold: #c4a056;
  --gold-soft: #e8d7a8;
  --paper: #080c14;
  --paper-2: #0e1522;
  --white: #101826;
  --ink: #e8eef6;
  --muted: #9aa6b8;
  --line: rgba(232, 238, 246, 0.12);
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.4);
  --header-bg: rgba(8, 12, 20, 0.9);
  --band: #0b2a5b;
  --chrome: #071833;
  --btn-ink: #071833;
  --serif: "Source Serif 4", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: "Source Sans 3", "Segoe UI", system-ui, sans-serif;
  --max: 1120px;
  --header-h: 4.5rem;
  color-scheme: dark;
}

html[data-theme="light"] {
  --navy: #0b2a5b;
  --navy-deep: #071833;
  --navy-mid: #143a73;
  --blue: #1b6cb8;
  --unesco: #0077bf;
  --gold: #c4a056;
  --gold-soft: #b8963e;
  --paper: #f4f1ea;
  --paper-2: #ebe6db;
  --white: #fffcf7;
  --ink: #1a1c1f;
  --muted: #5c6168;
  --line: rgba(11, 42, 91, 0.14);
  --shadow: 0 18px 50px rgba(7, 24, 51, 0.12);
  --header-bg: rgba(255, 252, 247, 0.92);
  --band: #0b2a5b;
  --chrome: #071833;
  --btn-ink: #071833;
  color-scheme: light;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  min-height: 100vh;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--navy-mid); text-underline-offset: 0.18em; }
a:hover { color: var(--blue); }

:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: 0.75rem;
  top: -4rem;
  background: var(--chrome);
  color: #fff;
  padding: 0.5rem 0.9rem;
  z-index: 100;
}
.skip:focus { top: 0.75rem; }

.wrap {
  width: min(var(--max), calc(100% - 2.4rem));
  margin-inline: auto;
}

/* ---------- header ---------- */
.mast {
  background: var(--chrome);
  color: #d7deea;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}
.mast-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  min-height: 2.1rem;
  flex-wrap: wrap;
}
.mast a { color: #d7deea; text-decoration: none; }
.mast a:hover { color: #fff; }
.mast-tools {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}
.theme-toggle {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.28);
  color: #fff;
  font: inherit;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.12rem 0.5rem;
  cursor: pointer;
  border-radius: 0.15rem;
}
.theme-toggle:hover { border-color: var(--gold); color: var(--gold-soft); }
.theme-toggle-dark { display: none; }
html[data-theme="light"] .theme-toggle-light { display: none; }
html[data-theme="light"] .theme-toggle-dark { display: inline; }
.lang {
  display: flex;
  gap: 0.15rem;
  font-weight: 600;
}
.lang a {
  padding: 0.15rem 0.45rem;
  border: 1px solid transparent;
}
.lang a[aria-current="true"] {
  color: #fff;
  border-color: var(--gold);
  background: rgba(196, 160, 86, 0.15);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--header-h);
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  color: var(--navy);
  min-width: 0;
}
.brand img {
  height: 2.55rem;
  width: auto;
  max-width: 10.5rem;
  border-radius: 0.2rem;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-kicker {
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--blue);
  font-weight: 700;
}
.brand-title {
  font-family: var(--serif);
  font-size: 1.02rem;
  font-weight: 600;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 0.3rem;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 1.15rem;
  height: 2px;
  background: var(--navy);
  margin: 0.28rem auto;
}

.nav ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.15rem 0.95rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav a {
  color: var(--navy);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.35rem 0;
  border-bottom: 2px solid transparent;
}
.nav a:hover,
.nav a[aria-current="page"] {
  border-bottom-color: var(--gold);
  color: var(--navy-deep);
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  color: #fff;
  background: var(--chrome) url("../img/hero-cyber.jpg") center right / cover no-repeat;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(7, 24, 51, 0.9) 0%, rgba(7, 24, 51, 0.62) 46%, rgba(7, 24, 51, 0.18) 100%);
}
.hero-grid {
  position: relative;
  z-index: 1;
  display: block;
  min-height: 24rem;
}
.hero-inner {
  padding: 3.2rem 0 3rem;
  max-width: 40rem;
}
.hero-logos {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.7rem 0.9rem;
  margin-bottom: 1.6rem;
}
.hero-logos img {
  height: 2.55rem;
  width: auto;
  background: #fff;
  padding: 0.22rem 0.38rem;
  border-radius: 0.15rem;
}
.eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--gold-soft);
  margin-bottom: 0.85rem;
}
.hero h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(2rem, 4.4vw, 3.35rem);
  line-height: 1.12;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}
.hero-lead {
  font-size: 1.15rem;
  color: #e4e9f1;
  margin: 0 0 1.6rem;
  max-width: 38rem;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.4rem;
  font-size: 0.88rem;
  color: #c9d3e2;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--gold);
  color: var(--btn-ink);
  text-decoration: none;
  font-weight: 700;
  padding: 0.7rem 1.15rem;
  border-radius: 0.15rem;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
}
.btn:hover { background: var(--gold-soft); color: var(--btn-ink); }
.btn-ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.4);
}
.btn-ghost:hover { background: rgba(255,255,255,0.08); color: #fff; }
.btn-row { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-bottom: 1.4rem; }

/* ---------- quote ---------- */
.quote-band {
  background: var(--band);
  color: #fff;
  padding: 2.6rem 0;
}
.quote-band blockquote {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.25rem, 2.4vw, 1.7rem);
  line-height: 1.4;
  font-weight: 500;
  max-width: 48rem;
}
.quote-band cite {
  display: block;
  margin-top: 0.85rem;
  font-style: normal;
  font-family: var(--sans);
  font-size: 0.88rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold-soft);
}

/* ---------- sections ---------- */
.section { padding: 4.2rem 0; }
.section-alt { background: var(--white); }
.section h2 {
  font-family: var(--serif);
  font-size: clamp(1.7rem, 2.6vw, 2.25rem);
  font-weight: 600;
  margin: 0 0 0.4rem;
  letter-spacing: -0.02em;
  color: var(--navy-deep);
}
.lede {
  color: var(--muted);
  font-size: 1.12rem;
  max-width: 42rem;
  margin: 0 0 2rem;
}
.rule {
  width: 3.2rem;
  height: 2px;
  background: var(--gold);
  border: 0;
  margin: 0 0 1.4rem;
}

.prose { max-width: 46rem; }
.prose p { margin: 0 0 1rem; }
.prose h3 {
  font-family: var(--serif);
  color: var(--navy);
  font-size: 1.35rem;
  margin: 2rem 0 0.6rem;
}

.split {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3rem;
  align-items: start;
}
.split-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 18rem;
  border-radius: 0.15rem;
  box-shadow: var(--shadow);
}

/* ---------- cards / lists ---------- */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
}
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.4rem;
}

.card {
  background: var(--white);
  border: 1px solid var(--line);
  padding: 1.35rem 1.3rem 1.45rem;
  border-top: 3px solid var(--navy);
}
.card h3 {
  font-family: var(--serif);
  font-size: 1.15rem;
  margin: 0 0 0.45rem;
  color: var(--navy-deep);
}
.card p { margin: 0; color: var(--muted); font-size: 0.98rem; }
.card-num {
  font-family: var(--serif);
  color: var(--gold);
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.news-list { display: grid; gap: 1.1rem; }
.news-item {
  display: grid;
  grid-template-columns: 10.5rem 1fr;
  gap: 1.2rem;
  background: var(--white);
  border: 1px solid var(--line);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
}
.news-item img {
  width: 100%;
  height: 100%;
  min-height: 7.5rem;
  object-fit: cover;
}
.news-body { padding: 1rem 1.1rem 1.1rem 0; }
.news-date {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue);
  font-weight: 700;
}
.news-item h3 {
  font-family: var(--serif);
  font-size: 1.15rem;
  margin: 0.25rem 0 0.35rem;
  color: var(--navy-deep);
}
.news-item p { margin: 0; color: var(--muted); font-size: 0.95rem; }

.seminar {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--line);
  margin-bottom: 1.2rem;
  overflow: hidden;
}
.seminar-top {
  display: grid;
  grid-template-columns: 11.5rem 1fr;
  gap: 1.2rem;
  align-items: start;
  padding: 1.1rem 1.2rem 1.15rem;
}
.seminar-poster {
  width: 100%;
  height: auto;
  object-fit: contain;
  background: var(--paper-2);
}
.seminar-body { padding: 0; }
.seminar .video-frame {
  margin: 0;
  border: 0;
  border-top: 1px solid var(--line);
}
.seminar-meta {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue);
  font-weight: 700;
}
.seminar h3 {
  font-family: var(--serif);
  margin: 0.35rem 0 0.4rem;
  font-size: 1.28rem;
  color: var(--navy-deep);
}
.seminar .speaker { font-weight: 700; color: var(--navy); margin: 0 0 0.6rem; }

.person {
  display: grid;
  grid-template-columns: 8.2rem 1fr;
  gap: 1.1rem;
  background: var(--white);
  border: 1px solid var(--line);
  padding: 1rem;
  align-items: start;
}
.person img {
  width: 8.2rem;
  height: 10.2rem;
  object-fit: cover;
  object-position: top;
  background: var(--paper-2);
}
.person h3 {
  font-family: var(--serif);
  margin: 0 0 0.15rem;
  font-size: 1.12rem;
  color: var(--navy-deep);
}
.person .role {
  color: var(--blue);
  font-weight: 700;
  font-size: 0.88rem;
  margin-bottom: 0.45rem;
}
.person p { margin: 0; color: var(--muted); font-size: 0.95rem; }
.person a { font-size: 0.9rem; }
.bio-more {
  margin-top: 0.65rem;
}
.bio-more summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--blue);
  font-size: 0.92rem;
}
.bio-more summary:hover { color: var(--navy-deep); }
.bio-extra {
  margin-top: 0.55rem;
}
.bio-extra p { margin: 0 0 0.55rem; }

.partner {
  padding: 1.15rem 1.2rem;
  background: var(--white);
  border: 1px solid var(--line);
}
.partner h3 {
  font-family: var(--serif);
  margin: 0 0 0.3rem;
  font-size: 1.08rem;
  color: var(--navy);
}
.partner p { margin: 0; color: var(--muted); font-size: 0.95rem; }

.dl {
  display: grid;
  grid-template-columns: 10rem 1fr;
  gap: 0.35rem 1rem;
  margin: 0;
}
.dl dt { color: var(--muted); font-size: 0.9rem; }
.dl dd { margin: 0; font-weight: 600; }

.page-hero {
  background: var(--band);
  color: #fff;
  padding: 3.2rem 0 2.4rem;
}
.page-hero h1 {
  font-family: var(--serif);
  font-size: clamp(1.9rem, 3.4vw, 2.7rem);
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}
.page-hero p { margin: 0; color: #d5ddea; max-width: 40rem; }

.obj-list {
  columns: 2;
  column-gap: 2.2rem;
  margin: 0;
  padding-left: 1.15rem;
}
.obj-list li { break-inside: avoid; margin-bottom: 0.7rem; }

.map-frame {
  width: 100%;
  min-height: 18rem;
  border: 0;
  border: 1px solid var(--line);
}

.notice {
  background: rgba(196, 160, 86, 0.12);
  border-left: 3px solid var(--gold);
  padding: 0.9rem 1rem;
  color: var(--ink);
  font-size: 0.95rem;
}

/* ---------- footer ---------- */
.site-footer {
  background: var(--chrome);
  color: #c5cedb;
  padding: 2.8rem 0 1.4rem;
  margin-top: 0;
  font-size: 0.92rem;
}
.foot-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 2rem;
  padding-bottom: 1.8rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.site-footer h2 {
  font-family: var(--sans);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold-soft);
  margin: 0 0 0.7rem;
}
.site-footer a { color: #e8eef6; text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin: 0.28rem 0; }
.foot-logos {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.9rem;
}
.foot-logos img { height: 2.4rem; width: auto; background: #fff; padding: 0.2rem; border-radius: 0.15rem; }
.legal {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding-top: 1rem;
  font-size: 0.8rem;
  color: #9aa6b8;
}

/* ---------- utilities ---------- */
.mt-0 { margin-top: 0; }
.kicker-dark {
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--blue);
  font-weight: 700;
}

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .nav {
    display: none;
    position: absolute;
    left: 0; right: 0; top: 100%;
    background: var(--white);
    border-bottom: 1px solid var(--line);
    padding: 0.6rem 1.2rem 1rem;
  }
  .nav.is-open { display: block; }
  .nav ul { flex-direction: column; gap: 0.2rem; }
  .split, .grid-3, .grid-2, .news-item, .foot-grid, .obj-list, .seminar-top, .media-pair {
    grid-template-columns: 1fr;
    columns: 1;
  }
  .news-item img { min-height: 11rem; max-height: 14rem; }
  .seminar-poster { max-width: 16rem; }
  .person { grid-template-columns: 6.4rem 1fr; }
  .person img { width: 6.4rem; height: 8rem; }
  .hero { min-height: 0; }
  .hero::before {
    background: linear-gradient(180deg, rgba(7, 24, 51, 0.88) 0%, rgba(7, 24, 51, 0.55) 100%);
  }
  .hero-grid { min-height: 0; }
  .hero-inner { padding: 2.2rem 0 2rem; }
  .video-shorts { grid-template-columns: minmax(0, 22rem); }
}

@media (max-width: 560px) {
  .news-item { grid-template-columns: 1fr; }
  .news-body { padding: 0.9rem 1rem 1.05rem; }
  .seminar-body { padding: 1rem; }
  .brand-text { display: none; }
}

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

.video-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  background: #000;
  border: 1px solid var(--line);
  overflow: hidden;
}
.video-frame.is-portrait {
  aspect-ratio: 9 / 16;
  width: 100%;
  max-width: 22rem;
}
.video-frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}
.video-card {
  background: var(--white);
  border: 1px solid var(--line);
}
.video-card.is-portrait {
  max-width: 22rem;
}
.video-shorts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 22rem));
  gap: 1.4rem;
  align-items: start;
}
.video-card .video-body {
  padding: 0.95rem 1.05rem 1.15rem;
}
.media-pair {
  display: grid;
  grid-template-columns: 1fr 18rem;
  gap: 1.2rem;
  align-items: stretch;
  margin-top: 1.4rem;
}
.media-pair > img {
  width: 100%;
  height: 100%;
  max-height: 32rem;
  object-fit: cover;
  border: 1px solid var(--line);
}
.media-pair .video-card {
  margin: 0;
}

@media (max-width: 860px) {
  .media-pair {
    grid-template-columns: 1fr;
    align-items: start;
  }
  .media-pair > img {
    height: auto;
    max-height: none;
    aspect-ratio: 4 / 3;
  }
  .media-pair .video-card.is-portrait {
    max-width: 22rem;
  }
  .video-shorts {
    grid-template-columns: minmax(0, 22rem);
  }
}
.video-card h3 {
  font-family: var(--serif);
  font-size: 1.12rem;
  margin: 0 0 0.3rem;
  color: var(--navy-deep);
}
.video-card p { margin: 0; color: var(--muted); font-size: 0.95rem; }

.gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.7rem;
  margin: 1.4rem 0 0.4rem;
}
.gallery a {
  display: block;
  position: relative;
  overflow: hidden;
  background: var(--paper-2);
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--line);
}
.gallery a img {
  width: 100%;
  height: 12.5rem;
  object-fit: cover;
  transition: transform 0.35s ease;
}
.gallery a:hover img { transform: scale(1.04); }
.gallery figcaption,
.gallery-cap {
  display: block;
  padding: 0.55rem 0.7rem 0.7rem;
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.4;
}
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(4, 8, 16, 0.92);
  z-index: 80;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem 4rem;
  cursor: zoom-out;
}
.lightbox.is-open { display: flex; }
.lightbox img {
  max-width: min(1100px, 96vw);
  max-height: 82vh;
  object-fit: contain;
  box-shadow: 0 20px 80px rgba(0,0,0,0.5);
}
.lightbox-cap {
  position: absolute;
  bottom: 1.1rem;
  left: 1rem;
  right: 1rem;
  text-align: center;
  color: #d7deea;
  font-size: 0.92rem;
}
.lightbox-close,
.lightbox-prev,
.lightbox-next {
  position: absolute;
  background: transparent;
  border: 0;
  color: #fff;
  font-size: 2rem;
  cursor: pointer;
  line-height: 1;
  padding: 0.4rem 0.7rem;
}
.lightbox-close { top: 0.6rem; right: 0.6rem; font-size: 1.6rem; }
.lightbox-prev { left: 0.4rem; top: 50%; transform: translateY(-50%); }
.lightbox-next { right: 0.4rem; top: 50%; transform: translateY(-50%); }

@media (max-width: 860px) {
  .gallery { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .gallery { grid-template-columns: 1fr; }
}

@media print {
  .mast, .site-header, .site-footer, .nav-toggle, .btn-row, .theme-toggle, .lightbox { display: none !important; }
  body { background: #fff; color: #000; }
}