:root {
    --ground: #F4F8F8;
    --surface: #FFFFFF;
    --surface-2: #E9F1F1;
    --ink: #102E38;
    --ink-2: #4B676F;
    --ink-3: #82999F;
    --line: #D8E4E5;
    --line-strong: #BDD0D2;
    --teal: #2C7C86;
    --teal-bright: #4CA5B0;
    --coral: #DE5B33;
    --sun: #F2A75A;
    --navy: #38558D;
    --plaque: transparent;

    --sans: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
    --display: "Bricolage Grotesque", "IBM Plex Sans", Arial, sans-serif;
    --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

    --wrap: 1180px;
    --gutter: clamp(20px, 5vw, 64px);
    --band: clamp(64px, 9vw, 128px);
  }

  @media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
      --ground: #0B1A1F;
      --surface: #11252B;
      --surface-2: #17313A;
      --ink: #E8F1F1;
      --ink-2: #A6C0C5;
      --ink-3: #7A969D;
      --line: #22434C;
      --line-strong: #2E5A65;
      --teal: #74C4CC;
      --teal-bright: #4CA5B0;
      --coral: #FF7B52;
      --sun: #F2A75A;
      --navy: #8FA8D8;
      --plaque: #FFFFFF;
    }
  }
  :root[data-theme="dark"] {
    --ground: #0B1A1F;
    --surface: #11252B;
    --surface-2: #17313A;
    --ink: #E8F1F1;
    --ink-2: #A6C0C5;
    --ink-3: #7A969D;
    --line: #22434C;
    --line-strong: #2E5A65;
    --teal: #74C4CC;
    --teal-bright: #4CA5B0;
    --coral: #FF7B52;
    --sun: #F2A75A;
    --navy: #8FA8D8;
    --plaque: #FFFFFF;
  }

  * { box-sizing: border-box; }

  body {
    margin: 0;
    background: var(--ground);
    color: var(--ink);
    font-family: var(--sans);
    font-size: 17px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
  }

  h1, h2, h3 {
    font-family: var(--display);
    font-weight: 600;
    letter-spacing: -0.035em;
    line-height: 1.02;
    text-wrap: balance;
    margin: 0;
  }

  p { margin: 0; }
  a { color: inherit; }

  .wrap {
    width: 100%;
    max-width: var(--wrap);
    margin-inline: auto;
    padding-inline: var(--gutter);
  }

  .eyebrow {
    font-family: var(--mono);
    font-size: 11.5px;
    font-weight: 500;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--teal);
  }

  /* ---------- nav ---------- */
  .nav {
    position: sticky;
    top: env(safe-area-inset-top, 0px);
    z-index: 50;
    background: color-mix(in srgb, var(--ground) 88%, transparent);
    backdrop-filter: saturate(180%) blur(14px);
    border-bottom: 1px solid var(--line);
  }
  .nav-in {
    display: flex;
    align-items: center;
    gap: 24px;
    min-height: 74px;
  }
  .brand { display: flex; align-items: center; gap: 10px; margin-right: auto; text-decoration: none; }
  .brand img {
    height: 38px; width: auto; display: block;
    background: var(--plaque);
    border-radius: 4px;
    padding: 0;
  }
  .nav-links { display: flex; align-items: center; gap: 26px; }
  .nav-links a {
    font-size: 14.5px;
    color: var(--ink-2);
    text-decoration: none;
    transition: color .18s ease;
  }
  .nav-links a:hover { color: var(--ink); }
  @media (max-width: 860px) { .nav-links { display: none; } }
  .nav-cta { display: flex; align-items: center; gap: 10px; }
  @media (max-width: 520px) {
    .nav-in { gap: 12px; }
    .nav-cta { gap: 8px; }
    .nav-cta .btn { padding: 9px 14px; font-size: 13.5px; }
    .brand img { height: 32px; }
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--sans);
    font-size: 14.5px;
    font-weight: 600;
    text-decoration: none;
    padding: 11px 20px;
    border-radius: 999px;
    border: 1px solid transparent;
    transition: transform .18s ease, background .18s ease, border-color .18s ease;
    white-space: nowrap;
  }
  .btn-primary { background: var(--coral); color: #fff; }
  .btn-primary:hover { transform: translateY(-1px); }
  .btn-ghost { border-color: var(--line-strong); color: var(--ink); }
  .btn-ghost:hover { border-color: var(--ink-2); }
  .btn-lg { padding: 14px 26px; font-size: 16px; }

  a:focus-visible, button:focus-visible {
    outline: 2px solid var(--teal);
    outline-offset: 3px;
    border-radius: 6px;
  }

  /* ---------- hero ---------- */
  .hero { padding-block: clamp(48px, 7vw, 92px) clamp(36px, 5vw, 56px); }
  .hero-grid {
    display: grid;
    grid-template-columns: 1.08fr 0.92fr;
    gap: clamp(32px, 5vw, 72px);
    align-items: center;
  }
  @media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; } }

  h1 {
    font-size: clamp(2.5rem, 6vw, 4.35rem);
    margin-block: 20px 22px;
  }
  h1 em {
    font-style: normal;
    color: var(--teal);
  }
  .lead {
    font-size: clamp(1.02rem, 1.5vw, 1.18rem);
    color: var(--ink-2);
    max-width: 46ch;
  }
  .hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }

.horizon { position: relative; aspect-ratio: 4 / 3.4; border-radius: 20px; overflow: hidden; border: 1px solid var(--line); max-width: 100%; }
  .horizon-svg { display: block; width: 100%; height: 100%; }
  .capa { animation: deriva var(--dur, 30s) linear infinite; }
  .capa-inv { animation-direction: reverse; }
  @keyframes deriva { from { transform: translateX(0); } to { transform: translateX(-320px); } }
  .sol-rayos { animation: girar 90s linear infinite; transform-origin: 0 0; }
  @keyframes girar { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
  .sol-anillo { animation: latir 7s ease-in-out infinite; transform-origin: 0 0; }
  @keyframes latir { 0%, 100% { opacity: .85; } 50% { opacity: .45; } }
  .horizon-tag {
    position: absolute;
    left: 20px;
    bottom: 18px;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: #0F3B44;
    background: rgba(255,255,255,.72);
    padding: 6px 11px;
    border-radius: 999px;
  }

  /* ---------- data rail ---------- */
  .rail {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-top: 1px solid var(--line);
    margin-top: clamp(40px, 5vw, 64px);
  }
  .rail div {
    padding: 22px 26px 22px 0;
    border-right: 1px solid var(--line);
  }
  .rail div:last-child { border-right: 0; }
  .rail div + div { padding-left: 26px; }
  .rail dt {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink-3);
    margin-bottom: 7px;
  }
  .rail dd {
    margin: 0;
    font-size: 15.5px;
    font-weight: 500;
    line-height: 1.4;
  }
  @media (max-width: 760px) {
    .rail { grid-template-columns: 1fr 1fr; }
    .rail div { border-right: 0; padding-inline: 0 20px; border-bottom: 1px solid var(--line); }
    .rail div + div { padding-left: 0; }
    .rail div:nth-child(2n) { padding-left: 20px; border-left: 1px solid var(--line); }
    .rail div:nth-last-child(-n+2) { border-bottom: 0; }
  }

  /* ---------- bands ---------- */
  .band { padding-block: var(--band); }
  .band-tight { padding-block: clamp(44px, 5.5vw, 74px); }
  .band-surface { background: var(--surface); border-block: 1px solid var(--line); }

  .head { max-width: 62ch; margin-bottom: clamp(36px, 4.5vw, 58px); }
  .head h2 {
    font-size: clamp(1.8rem, 3.4vw, 2.75rem);
    margin-block: 16px 0;
  }
  .head p { margin-top: 16px; color: var(--ink-2); max-width: 58ch; }

  /* ---------- stats ---------- */
  .stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; }
  .stats > div { padding-right: 28px; }
  .stats > div + div {
    padding-left: 28px;
    border-left: 1px solid var(--line);
  }
  .stat-n {
    font-family: var(--display);
    font-size: clamp(2.6rem, 5.5vw, 4rem);
    font-weight: 600;
    letter-spacing: -0.05em;
    line-height: 1;
    font-variant-numeric: tabular-nums;
    color: var(--ink);
  }
  .stat-l { margin-top: 10px; font-size: 15px; color: var(--ink-2); }
  @media (max-width: 680px) {
    .stats { grid-template-columns: 1fr; }
    .stats > div { padding: 0 0 22px; }
    .stats > div + div { padding: 22px 0 0; border-left: 0; border-top: 1px solid var(--line); }
  }

  /* ---------- audiencias ---------- */
  .aud { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border-block: 1px solid var(--line); }
  .aud > div { background: var(--ground); padding: 30px 26px 34px; }
  .band-surface .aud > div { background: var(--surface); }
  .aud h3 { font-size: 1.22rem; letter-spacing: -0.02em; margin-bottom: 10px; }
  .aud p { font-size: 15px; color: var(--ink-2); }
  @media (max-width: 900px) { .aud { grid-template-columns: 1fr 1fr; } }
  @media (max-width: 560px) { .aud { grid-template-columns: 1fr; } }

  /* ---------- formato ---------- */
  .fmt { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(28px, 4vw, 56px); }
  @media (max-width: 820px) { .fmt { grid-template-columns: 1fr; } }
  .fmt h3 { font-size: 1.45rem; margin-block: 18px 12px; }
  .fmt p { color: var(--ink-2); font-size: 15.5px; }
  .fmt-mark {
    width: 42px; height: 42px;
    display: grid; place-items: center;
    border-radius: 12px;
    background: var(--surface-2);
    color: var(--teal);
  }
  .band-surface .fmt-mark { background: var(--ground); }
  .fmt-meta {
    margin-top: 14px;
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.06em;
    color: var(--ink-3);
  }

  /* ---------- speakers ---------- */
  .spk { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(18px, 2.2vw, 28px); }
  @media (max-width: 900px) { .spk { grid-template-columns: 1fr 1fr; } }
  @media (max-width: 520px) { .spk { grid-template-columns: 1fr; } }
  .spk article { display: flex; flex-direction: column; height: 100%; }
  .spk-photo {
    aspect-ratio: 4 / 5;
    border-radius: 14px;
    background: linear-gradient(160deg, var(--surface-2), color-mix(in srgb, var(--teal-bright) 22%, var(--surface-2)));
    display: grid;
    place-items: center;
    font-family: var(--display);
    font-size: 2.1rem;
    font-weight: 600;
    letter-spacing: -0.04em;
    color: var(--teal);
    border: 1px solid var(--line);
  }
  .spk h3 { font-size: 1.12rem; margin-top: 16px; letter-spacing: -0.02em; }
  .spk-photo { overflow: hidden; }
  .spk-photo img { width: 100%; height: 100%; object-fit: cover; display: block; }
  a.spk-card { display: flex; flex-direction: column; height: 100%; color: inherit; text-decoration: none; }
  a.spk-card .spk-photo img { transition: transform .5s cubic-bezier(.2,.7,.3,1); }
  a.spk-card:hover .spk-photo img { transform: scale(1.04); }
  a.spk-card:hover h3 { color: var(--teal); }
  .spk-li {
    margin-top: auto;
    padding-top: 12px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--mono);
    font-size: 10.5px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink-3);
  }
  a.spk-card:hover .spk-li { color: var(--teal); }
  .spk-li svg { width: 13px; height: 13px; }
  .spk-role { font-size: 14px; color: var(--ink-2); margin-top: 5px; }
  .spk-tag {
    font-family: var(--mono);
    font-size: 10.5px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink-3);
    margin-top: auto;
    padding-top: 12px;
  }

  .notice {
    margin-top: clamp(34px, 4vw, 50px);
    padding: 26px 28px;
    border: 1px solid var(--line);
    border-left: 3px solid var(--coral);
    border-radius: 4px 14px 14px 4px;
    background: var(--surface);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 18px;
  }
  .band-surface .notice { background: var(--ground); }
  .notice p { color: var(--ink-2); font-size: 15.5px; max-width: 54ch; }
  .notice strong { color: var(--ink); font-weight: 600; }


  /* ---------- ediciones ---------- */
  .eds { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(20px, 2.6vw, 30px); }
  @media (max-width: 760px) { .eds { grid-template-columns: 1fr; } }
  .ed {
    display: block;
    text-decoration: none;
    border: 1px solid var(--line);
    border-radius: 18px;
    overflow: hidden;
    background: var(--surface);
    transition: transform .2s ease, border-color .2s ease;
  }
  .band-surface .ed { background: var(--ground); }
  .ed:hover { transform: translateY(-3px); border-color: var(--line-strong); }
  .ed-img { aspect-ratio: 16 / 9; position: relative; }
  .ed-img svg { display: block; width: 100%; height: 100%; }
  .ed-play {
    position: absolute; inset: auto 0 0 0;
    display: flex; align-items: center; gap: 9px;
    padding: 14px 18px;
    font-family: var(--mono); font-size: 11px; letter-spacing: .14em; text-transform: uppercase;
    color: #0F3B44;
  }
  .ed-body { padding: 22px 24px 26px; display: flex; align-items: flex-end; gap: 16px; }
  .ed-body > div { flex: 1; }
  .ed h3 { font-size: 1.35rem; letter-spacing: -0.025em; }
  .ed-year { font-family: var(--mono); font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--teal); margin-bottom: 9px; }
  .ed-meta { margin-top: 9px; font-size: 14.5px; color: var(--ink-2); }
  .ed-arrow { color: var(--coral); flex: none; }
  .ed[aria-disabled="true"] { opacity: .72; pointer-events: none; }

  /* ---------- sponsors ---------- */
  .tier { border-top: 1px solid var(--line); padding-block: 24px; display: grid; grid-template-columns: 170px 1fr; gap: 18px 32px; align-items: center; }
  .tier:last-of-type { border-bottom: 1px solid var(--line); }
  .tier-name { font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-3); }
  .tier-logos { display: flex; flex-wrap: wrap; gap: clamp(20px, 3vw, 44px); align-items: center; }
  .logo {
    display: grid;
    place-items: center;
    background: transparent;
    border: 0;
    border-radius: 0;
    height: 78px;
    padding: 8px 10px;
    min-width: 120px;
    overflow: hidden;
  }
  .logo img { max-height: 58px; width: auto; max-width: 230px; object-fit: contain; display: block; }
  .logo span {
    font-family: var(--display);
    font-weight: 600;
    font-size: 1.3rem;
    letter-spacing: -0.03em;
    color: #16323C;
    text-align: center;
  }
  .tier--lead .logo { height: 104px; padding: 10px 14px; min-width: 180px; }
  .tier--lead .logo img { max-height: 72px; max-width: 280px; }
  .tier--lead .logo span { font-size: 2rem; }
  .tier--innov .logo img { max-height: 46px; max-width: 330px; }
  @media (max-width: 720px) { .tier { grid-template-columns: 1fr; } }

  /* ---------- sede ---------- */
  .venue { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(30px, 5vw, 70px); align-items: center; }
  @media (max-width: 860px) { .venue { grid-template-columns: 1fr; } }
  .venue-card {
    aspect-ratio: 16 / 11;
    border-radius: 20px;
    border: 1px solid var(--line);
    overflow: hidden;
  }
  .venue-card svg { display: block; width: 100%; height: 100%; }
  .venue dl { margin: 26px 0 0; display: grid; gap: 16px; }
  .venue dt { font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-3); }
  .venue dd { margin: 4px 0 0; font-size: 16px; }

  /* ---------- organizadores ---------- */
  .org { display: flex; flex-wrap: wrap; gap: 14px 46px; }
  .org div { display: flex; flex-direction: column; }
  .org strong { font-family: var(--display); font-weight: 600; font-size: 1.2rem; letter-spacing: -0.025em; }
  .org span { font-size: 14px; color: var(--ink-3); }

  /* ---------- cierre ---------- */
  .close { text-align: left; }
  .close h2 { font-size: clamp(2.1rem, 5vw, 3.5rem); max-width: 18ch; }
  .close p { margin-top: 20px; color: var(--ink-2); max-width: 46ch; font-size: 1.08rem; }

  /* ---------- footer ---------- */
  .foot { border-top: 1px solid var(--line); padding-block: 44px 56px; }
  .foot-in { display: flex; flex-wrap: wrap; gap: 30px 60px; align-items: flex-start; }
  .foot img { height: 30px; width: auto; display: block; background: var(--plaque); border-radius: 4px; }
  .foot-col { display: grid; gap: 7px; font-size: 14.5px; color: var(--ink-2); }
  .foot-col b { font-family: var(--mono); font-weight: 500; font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 4px; }
  .foot-col a { text-decoration: none; }
  .foot-col a:hover { color: var(--ink); }
  .foot-legal { margin-top: 38px; font-size: 13px; color: var(--ink-3); }

  @media (prefers-reduced-motion: reduce) {
    * { animation: none !important; transition: none !important; }
  }

/* ===================================================================
   Páginas de edición (2025 / 2026)
   =================================================================== */
.nav-volver {
  display: inline-flex; align-items: center; gap: 8px;
  margin-right: auto; margin-left: 26px;
  font-size: 14.5px; color: var(--ink-2); text-decoration: none;
  transition: color .18s ease;
}
.nav-volver:hover { color: var(--ink); }
@media (max-width: 620px) { .nav-volver span { display: none; } }

.hero-ed { padding-block: clamp(44px, 6vw, 84px) clamp(30px, 4vw, 44px); }
.hero-ed h1 { font-size: clamp(2.4rem, 5.6vw, 4rem); margin-block: 18px 20px; }
.hero-ed .lead { max-width: 54ch; }

.video {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--surface-2);
}
.video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

.vacio {
  border: 1px dashed var(--line-strong);
  border-radius: 18px;
  padding: clamp(34px, 6vw, 64px) clamp(24px, 4vw, 44px);
  text-align: center;
  color: var(--ink-2);
  background: var(--surface);
}
.band-surface .vacio { background: var(--ground); }
.vacio strong { display: block; font-family: var(--display); font-weight: 600; font-size: 1.25rem; letter-spacing: -0.025em; color: var(--ink); margin-bottom: 8px; }
.vacio p { font-size: 15.5px; max-width: 46ch; margin-inline: auto; }

/* galería */
.galeria { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
@media (max-width: 900px) { .galeria { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 600px) { .galeria { grid-template-columns: repeat(2, 1fr); gap: 10px; } }
.foto {
  position: relative;
  aspect-ratio: 3 / 2;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--surface-2);
  padding: 0;
  cursor: pointer;
  display: block;
  transition: transform .18s ease;
}
.foto:hover { transform: translateY(-2px); }
.foto img { width: 100%; height: 100%; object-fit: cover; display: block; animation: foto-entra .35s ease both; }
@keyframes foto-entra { from { opacity: 0; } to { opacity: 1; } }
@media (prefers-reduced-motion: reduce) { .foto img { animation: none; } }
.foto--vacia {
  display: grid; place-items: center;
  background: linear-gradient(150deg, #EAF3F3, #D8EAEA);
  cursor: default;
}
.foto--vacia:hover { transform: none; }
.foto--vacia span {
  font-family: var(--mono); font-size: 11px; letter-spacing: .12em;
  text-transform: uppercase; color: #6E8F96;
}
.notice p { max-width: 62ch; margin: 0; }
.galeria-nota {
  margin-top: 18px;
  font-family: var(--mono); font-size: 11.5px; letter-spacing: .1em;
  text-transform: uppercase; color: var(--ink-3);
}

/* lightbox */
.lightbox[hidden] { display: none !important; }
.lightbox {
  position: fixed; inset: 0; z-index: 90;
  background: rgba(10, 26, 31, .92);
  display: grid; place-items: center;
  padding: clamp(16px, 4vw, 48px);
}
.lightbox img { max-width: 100%; max-height: 82vh; border-radius: 10px; display: block; }
.lightbox-cerrar, .lightbox-nav {
  position: absolute; background: rgba(255,255,255,.12); color: #fff;
  border: 0; border-radius: 999px; cursor: pointer;
  width: 46px; height: 46px; display: grid; place-items: center;
  font-size: 20px; line-height: 1;
  transition: background .18s ease;
}
.lightbox-cerrar:hover, .lightbox-nav:hover { background: rgba(255,255,255,.26); }
.lightbox-cerrar { top: max(16px, env(safe-area-inset-top, 0px)); right: 16px; }
.lightbox-nav.prev { left: 16px; top: 50%; transform: translateY(-50%); }
.lightbox-nav.next { right: 16px; top: 50%; transform: translateY(-50%); }
.lightbox-pie {
  position: absolute; left: 0; right: 0;
  bottom: max(18px, env(safe-area-inset-bottom, 0px));
  text-align: center; color: #C9DDE0;
  font-family: var(--mono); font-size: 12px; letter-spacing: .1em;
}

/* speakers de edición: foto real o monograma */
.spk-photo img { width: 100%; height: 100%; object-fit: cover; border-radius: 14px; display: block; }
.spk-photo--con-foto { padding: 0; background: var(--surface-2); }

/* ---------- agenda (próximamente) ---------- */
.agenda-prox { margin-top: clamp(28px, 4vw, 44px); }
.agenda-chip {
  display: inline-block;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal);
  background: color-mix(in srgb, var(--teal-bright) 14%, var(--surface));
  border: 1px solid color-mix(in srgb, var(--teal-bright) 30%, var(--line));
  border-radius: 999px;
  padding: 7px 14px;
}
.agenda-lista { margin-top: 22px; border-top: 1px solid var(--line); }
.agenda-lista > div {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 24px;
  padding: 20px 2px;
  border-bottom: 1px solid var(--line);
}
.agenda-lista span { font-family: var(--display); font-size: clamp(1.05rem, 2vw, 1.3rem); letter-spacing: -0.02em; color: var(--ink); }
.agenda-lista em {
  font-style: normal;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* 2025: cinco speakers */
.spk--5 { grid-template-columns: repeat(5, 1fr); }
@media (max-width: 1080px) { .spk--5 { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 760px)  { .spk--5 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 460px)  { .spk--5 { grid-template-columns: 1fr; } }

/* video vertical (YouTube Shorts) */
.video--vertical { aspect-ratio: 9 / 16; max-width: 420px; margin-inline: auto; }

/* sponsors: logo clickeable */
a.logo { text-decoration: none; transition: opacity .2s ease, transform .2s ease; }
a.logo:hover { opacity: .62; transform: translateY(-2px); }
a.logo:focus-visible { outline: 2px solid var(--teal); outline-offset: 6px; border-radius: 8px; }

.org a { color: inherit; text-decoration: none; }
.org a strong { border-bottom: 1px solid var(--line-strong); padding-bottom: 2px; transition: color .2s ease, border-color .2s ease; }
.org a:hover strong { color: var(--teal); border-color: var(--teal); }


/* ---------- titulares en dos colores ----------
   .ac resalta el concepto. Solo navy, teal y coral: son los unicos
   de la paleta que pasan contraste sobre blanco en tamano titular. */
h1 .ac, h2 .ac { color: var(--teal); }
.ac--coral { color: var(--coral) !important; }
.ac--navy  { color: var(--navy)  !important; }
.ac--teal  { color: var(--teal)  !important; }

/* numeros grandes en color */
.stats > div:nth-child(1) .stat-n { color: var(--teal); }
.stats > div:nth-child(2) .stat-n { color: var(--coral); }
.stats > div:nth-child(3) .stat-n { color: var(--navy); }
.rail dd .n { font-weight: 600; }
.rail div:nth-child(1) dd .n { color: var(--teal); }
.rail div:nth-child(2) dd .n { color: var(--coral); }
.rail div:nth-child(3) dd .n { color: var(--navy); }
.rail div:nth-child(4) dd .n { color: var(--teal); }


/* ---------- keynote destacado (home) ---------- */
.keynote {
  margin-top: clamp(28px, 4vw, 44px);
  display: grid;
  grid-template-columns: minmax(220px, 320px) 1fr;
  gap: clamp(24px, 3.4vw, 48px);
  align-items: start;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: clamp(20px, 2.6vw, 34px);
}
.band-surface .keynote { background: var(--ground); }
.keynote-foto { margin: 0; border-radius: 16px; overflow: hidden; background: var(--surface-2); }
.keynote-foto img { width: 100%; height: auto; display: block; }
.keynote-chip {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 5px 12px;
}
.keynote-texto h3 {
  font-family: var(--display);
  font-size: clamp(1.6rem, 3.4vw, 2.3rem);
  letter-spacing: -0.03em;
  line-height: 1.08;
  margin-top: 14px;
}
.keynote-rol { color: var(--teal); font-size: 15px; margin-top: 8px; }
.keynote-texto p { color: var(--ink-2); font-size: 16px; line-height: 1.65; margin-top: 16px; max-width: 62ch; }
.keynote-premios {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.keynote-premios li {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-2);
  background: var(--surface-2);
  border-radius: 8px;
  padding: 7px 11px;
}
@media (max-width: 760px) {
  .keynote { grid-template-columns: 1fr; }
  .keynote-foto { max-width: 280px; }
}


/* ---------- franja de inscripcion ---------- */
.franja {
  background: linear-gradient(120deg, var(--teal) 0%, #1F5F6B 55%, #15434D 100%);
  padding: clamp(28px, 4vw, 44px) 0;
  border-block: 1px solid color-mix(in srgb, #000 18%, var(--teal));
}
.franja-in {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: clamp(18px, 3vw, 40px);
}
.franja-chip {
  display: inline-block;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #FFFFFF;
  background: rgba(255,255,255,0.16);
  border: 1px solid rgba(255,255,255,0.32);
  border-radius: 999px;
  padding: 6px 13px;
}
.franja h2 {
  color: #FFFFFF;
  font-size: clamp(1.5rem, 3.4vw, 2.3rem);
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-top: 14px;
  max-width: 20ch;
}
.franja p { color: rgba(255,255,255,0.84); font-size: 15.5px; margin-top: 10px; max-width: 48ch; }
.franja .btn-primary { flex: none; box-shadow: 0 10px 28px rgba(0,0,0,0.22); }
@media (max-width: 620px) { .franja .btn-primary { width: 100%; justify-content: center; } }

/* ---------- agenda con horarios ---------- */
.agenda-lista > div {
  display: grid;
  grid-template-columns: minmax(120px, 170px) 1fr auto;
  align-items: baseline;
  gap: 6px 24px;
}
.agenda-lista b {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--teal);
  white-space: nowrap;
}
@media (max-width: 680px) {
  .agenda-lista > div { grid-template-columns: 1fr; }
  .agenda-lista b:empty { display: none; }
}

/* ---------- redes ---------- */
.redes {
  margin-top: clamp(30px, 4vw, 46px);
  padding-top: clamp(24px, 3vw, 34px);
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}
.redes-tit {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-right: 6px;
}
.red {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 11px 16px;
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.band-surface .red { background: var(--ground); }
.red svg { width: 20px; height: 20px; flex: none; }
.red b { font-weight: 600; font-size: 14.5px; }
.red em {
  font-style: normal;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-3);
}
.red:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(16,46,56,0.10); }
.red--ig:hover { border-color: var(--coral); }
.red--ig:hover svg, .red--ig:hover b { color: var(--coral); }
.red--li:hover { border-color: var(--navy); }
.red--li:hover svg, .red--li:hover b { color: var(--navy); }
.red:focus-visible { outline: 2px solid var(--teal); outline-offset: 4px; }