a { color: inherit; }
:focus-visible { outline: 3px solid var(--public-focus); outline-offset: 4px; }
.public-brand { font: 900 1.15rem var(--public-font-title); text-decoration: none; letter-spacing: -0.03em; }
.public-nav { display: flex; align-items: center; gap: 0.25rem; margin: 0; padding: 0; list-style: none; }
.public-nav__link, .public-nav__login { display: inline-flex; min-height: 2.75rem; align-items: center; padding-inline: 0.85rem; border-radius: var(--public-radius-control); color: var(--public-muted); text-decoration: none; white-space: nowrap; }
.public-nav__link:hover, .public-nav__login:hover { color: var(--public-text); background: rgba(255, 255, 255, 0.05); }
.public-nav__link[aria-current="page"] {
  color: var(--public-text);
  background: rgba(0, 229, 255, 0.12);
  box-shadow: inset 0 0 0 1px rgba(0, 229, 255, 0.38);
}
.public-button { display: inline-flex; min-height: 2.9rem; align-items: center; justify-content: center; padding-inline: 1rem; border: 1px solid var(--public-border); border-radius: var(--public-radius-control); text-decoration: none; }
.public-button--primary { color: #001018; border-color: transparent; background: linear-gradient(120deg, var(--public-accent), #68b8ff); font-weight: 800; }
.public-eyebrow { color: var(--public-accent); font-size: 0.75rem; font-weight: 900; letter-spacing: 0.14em; text-transform: uppercase; }
.public-card { min-width: 0; padding: clamp(1.25rem, 3vw, 2rem); border: 1px solid var(--public-border); border-radius: var(--public-radius); background: linear-gradient(145deg, rgba(11, 32, 51, 0.90), rgba(4, 17, 29, 0.84)); box-shadow: var(--public-shadow); }
.public-card h2 { margin-top: 0; font-family: var(--public-font-title); letter-spacing: -0.025em; }
.public-card p, .public-card li, .public-footer p, .public-footer small { color: var(--public-muted); }
.public-breadcrumbs { padding-top: 1rem; }
.public-breadcrumbs ol { display: flex; gap: 0.5rem; margin: 0; padding: 0; list-style: none; color: var(--public-muted); }
.public-breadcrumbs li + li::before { content: "/"; margin-right: 0.5rem; opacity: 0.45; }
.public-footer a { color: var(--public-muted); text-decoration: none; }
.public-footer a:hover { color: var(--public-text); }
@media (max-width: 860px) {
  .public-nav { width: max-content; }
  .public-header .public-nav__link:focus-visible,
  .public-header .public-nav__login:focus-visible {
    outline-offset: -3px;
  }
}
.public-brand { display: inline-flex; align-items: center; gap: 0.65rem; }
.public-brand::before { content: ""; width: 0.78rem; height: 0.78rem; border-radius: 50%; background: var(--public-accent); box-shadow: 0 0 0 0.3rem rgba(0, 229, 255, 0.11), 0 0 1.25rem rgba(0, 229, 255, 0.66); }
.public-nav__link, .public-nav__login { transition: color 160ms var(--public-ease-out), background-color 160ms var(--public-ease-out), border-color 160ms var(--public-ease-out), transform 160ms var(--public-ease-out); }
.public-button { gap: 0.55rem; font-weight: 760; transition: transform 160ms var(--public-ease-out), border-color 160ms var(--public-ease-out), background-color 160ms var(--public-ease-out), box-shadow 160ms var(--public-ease-out); }
.public-button--primary { box-shadow: 0 0.85rem 2.2rem rgba(0, 169, 235, 0.24); }
.public-button--secondary { color: var(--public-text); background: rgba(7, 23, 38, 0.68); }
.public-button:active, .public-nav__link:active, .public-nav__login:active { transform: scale(0.97); }
.public-hero__signal { position: relative; padding: clamp(1.25rem, 3vw, 2rem); overflow: hidden; border: 1px solid rgba(76, 214, 255, 0.26); border-radius: var(--public-radius-xl); background: linear-gradient(150deg, rgba(10, 39, 59, 0.92), rgba(4, 15, 29, 0.84)); box-shadow: 0 2rem 5rem rgba(0, 0, 0, 0.32), inset 0 1px 0 rgba(255, 255, 255, 0.05); }
.public-hero__signal::before { content: ""; position: absolute; width: 14rem; height: 14rem; top: -8rem; right: -6rem; border-radius: 50%; background: radial-gradient(circle, rgba(0, 229, 255, 0.25), transparent 68%); pointer-events: none; }
.public-hero__signal-label, .public-card__index { position: relative; display: inline-flex; color: var(--public-accent); font-size: 0.7rem; font-weight: 900; letter-spacing: 0.14em; text-transform: uppercase; }
.public-hero__signal-list { position: relative; display: grid; gap: 1rem; margin: 1.5rem 0; padding: 0; list-style: none; }
.public-hero__signal-list li { display: grid; grid-template-columns: 2rem minmax(0, 1fr); column-gap: 0.7rem; align-items: baseline; }
.public-hero__signal-list li span { grid-row: span 2; color: var(--public-accent); font: 800 0.78rem var(--public-font-title); }
.public-hero__signal-list strong { font-family: var(--public-font-title); letter-spacing: -0.02em; }
.public-hero__signal-list small { grid-column: 2; color: var(--public-muted); line-height: 1.45; }
.public-hero__signal-foot { position: relative; margin: 0; padding-top: 1rem; border-top: 1px solid var(--public-border); color: #c5e9f4; font-size: 0.87rem; }
.public-card { position: relative; overflow: hidden; border-color: rgba(119, 203, 239, 0.16); transition: transform 220ms var(--public-ease-out), border-color 220ms var(--public-ease-out), box-shadow 220ms var(--public-ease-out); }
.public-card::after { content: ""; position: absolute; inset: auto 1.5rem 0; height: 1px; background: linear-gradient(90deg, transparent, var(--public-signal), transparent); opacity: 0.7; }
.public-card__index { margin-bottom: 2.4rem; opacity: 0.88; }
.public-card ul { display: grid; gap: 0.45rem; padding-left: 1.1rem; }
@media (hover: hover) and (pointer: fine) { .public-nav__link:hover, .public-nav__login:hover { transform: translateY(-1px); } .public-button:hover { transform: translateY(-2px); border-color: rgba(143, 234, 255, 0.78); box-shadow: 0 1.15rem 2.6rem rgba(0, 0, 0, 0.26); } .public-card:hover { transform: translateY(-5px); border-color: rgba(102, 225, 255, 0.42); box-shadow: 0 2rem 5rem rgba(0, 0, 0, 0.34); } }

.public-contact { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(1.5rem, 4vw, 4rem); align-items: start; padding-block: clamp(2rem, 6vw, 5rem); }
.public-contact__intro { padding-top: 1rem; }
.public-contact__intro h2 { margin: .5rem 0 1rem; font-family: var(--public-font-title); font-size: clamp(1.8rem, 4vw, 3.4rem); letter-spacing: -.045em; line-height: .98; }
.public-contact__form { padding: clamp(1.25rem, 3vw, 2rem); border: 1px solid rgba(102, 225, 255, .28); border-radius: var(--public-radius-xl); background: linear-gradient(145deg, rgba(12, 42, 63, .88), rgba(4, 15, 29, .92)); box-shadow: var(--public-shadow); }
.public-contact__fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.public-contact__fields label { display: grid; gap: .5rem; color: var(--public-text); font-weight: 700; }
.public-contact__fields input, .public-contact__fields select, .public-contact__fields textarea { width: 100%; border: 1px solid var(--public-border); border-radius: .7rem; background: rgba(1, 10, 19, .6); color: var(--public-text); font: inherit; padding: .8rem .9rem; }
.public-contact__fields input:focus, .public-contact__fields select:focus, .public-contact__fields textarea:focus { border-color: var(--public-accent); outline: 0; box-shadow: 0 0 0 .2rem rgba(0, 229, 255, .12); }
.public-contact__message { grid-column: 1 / -1; }
.public-contact__actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; margin-top: 1rem; }
.public-contact__status { min-height: 1.5rem; margin: 0; color: var(--public-muted); }
.public-contact__status[data-state="success"] { color: #7cecb2; }
.public-contact__status[data-state="error"] { color: #ff9d9d; }
@media (max-width: 760px) { .public-contact, .public-contact__fields { grid-template-columns: 1fr; } }

/* Ambientación pública: extiende el lenguaje de la landing sin competir con su contenido. */
body.public-site { isolation: isolate; }
.public-site > :not(.public-ambient) { position: relative; z-index: 1; }
.public-ambient {
  position: fixed;
  z-index: 0;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  background:
    radial-gradient(circle at 14% 18%, rgba(0, 229, 255, 0.10), transparent 23rem),
    radial-gradient(circle at 88% 72%, rgba(109, 90, 255, 0.11), transparent 28rem);
}
.public-ambient::before {
  position: absolute;
  inset: 0;
  content: "";
  opacity: 0.30;
  background-image: linear-gradient(rgba(91, 208, 255, 0.055) 1px, transparent 1px), linear-gradient(90deg, rgba(91, 208, 255, 0.055) 1px, transparent 1px);
  background-size: 4.5rem 4.5rem;
  mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, 0.68) 42%, transparent 88%);
}
.public-ambient__particle {
  position: absolute;
  width: 0.28rem;
  height: 0.28rem;
  border-radius: 50%;
  background: #2de7ff;
  box-shadow: 0 0 1.15rem rgba(0, 229, 255, 0.9);
  opacity: 0.38;
  animation: public-ambient-drift 14s var(--public-ease-flow) infinite alternate;
}
.public-ambient__particle:nth-child(1) { top: 14%; left: 8%; animation-delay: -3s; }
.public-ambient__particle:nth-child(2) { top: 33%; left: 24%; width: 0.18rem; height: 0.18rem; animation-delay: -9s; }
.public-ambient__particle:nth-child(3) { top: 20%; right: 12%; animation-delay: -5s; }
.public-ambient__particle:nth-child(4) { top: 62%; left: 18%; width: 0.2rem; height: 0.2rem; animation-delay: -12s; }
.public-ambient__particle:nth-child(5) { top: 70%; right: 24%; animation-delay: -7s; }
.public-ambient__particle:nth-child(6) { top: 84%; right: 7%; width: 0.2rem; height: 0.2rem; animation-delay: -10s; }
@keyframes public-ambient-drift {
  from { transform: translate3d(0, 0, 0) scale(0.82); opacity: 0.18; }
  to { transform: translate3d(1.8rem, -3.2rem, 0) scale(1.16); opacity: 0.62; }
}
.public-header {
  border-bottom-color: transparent;
  background: transparent;
  box-shadow: none;
}
.public-brand::before { display: none; }
.public-footer {
  position: relative;
  overflow: clip;
  border-top-color: rgba(95, 221, 255, 0.19);
  background: linear-gradient(135deg, rgba(3, 19, 32, 0.92), rgba(1, 9, 18, 0.96));
}
.public-footer::before {
  position: absolute;
  inset: 0 0 auto;
  height: 1px;
  content: "";
  background: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.75), transparent);
}
@media (prefers-reduced-motion: reduce) {
  .public-ambient__particle { animation: none; }
}
/* Shared SUSBI OS field: the same particle runtime used by Inicio, behind all public chapters. */
.susbi-public-field {
  position: fixed !important;
  z-index: 0 !important;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  background:
    radial-gradient(72rem 42rem at 10% -12%, rgba(19, 119, 255, 0.20), transparent 58%),
    radial-gradient(58rem 38rem at 96% 92%, rgba(0, 206, 153, 0.14), transparent 63%),
    #010912;
}
.susbi-public-field #hero-particles {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.72;
}
.public-site > .susbi-public-field + .public-ambient { z-index: 0; background: transparent; }
.public-site > :not(.public-ambient):not(.susbi-public-field) { position: relative; z-index: 1; }
@media (prefers-reduced-motion: reduce) { .susbi-public-field #hero-particles { display: none; } }
/* Particulas locales: el fondo acompana cada capitulo sin competir con el contenido. */
.public-section-particles { position: absolute; z-index: 0; inset: 0; overflow: hidden; pointer-events: none; }
.public-section-particles span { position: absolute; width: .22rem; height: .22rem; border-radius: 50%; background: #2de7ff; box-shadow: 0 0 .9rem rgba(0, 229, 255, .78); opacity: .2; animation: public-section-rise 11s var(--public-ease-flow) infinite; }
.public-section-particles span:nth-child(1) { left: 7%; bottom: 10%; animation-delay: -8s; }
.public-section-particles span:nth-child(2) { left: 19%; bottom: 2%; width: .14rem; height: .14rem; animation-delay: -3s; }
.public-section-particles span:nth-child(3) { left: 36%; bottom: 19%; animation-delay: -10s; }
.public-section-particles span:nth-child(4) { left: 52%; bottom: 4%; width: .16rem; height: .16rem; animation-delay: -6s; }
.public-section-particles span:nth-child(5) { left: 68%; bottom: 13%; animation-delay: -1s; }
.public-section-particles span:nth-child(6) { left: 77%; bottom: 2%; width: .14rem; height: .14rem; animation-delay: -9s; }
.public-section-particles span:nth-child(7) { left: 88%; bottom: 18%; animation-delay: -4s; }
.public-section-particles span:nth-child(8) { left: 95%; bottom: 5%; width: .16rem; height: .16rem; animation-delay: -11s; }
@keyframes public-section-rise { from { transform: translate3d(0, 0, 0) scale(.8); opacity: 0; } 20% { opacity: .46; } to { transform: translate3d(1.1rem, -13rem, 0) scale(1.2); opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .public-section-particles span { animation: none; } }
/* Profundidad ambiental: capas lentas, limitadas y anulables. */
.public-ambient__particle:nth-child(7) { top: 8%; left: 47%; width: .13rem; height: .13rem; opacity: .28; animation-delay: -2s; animation-duration: 18s; }
.public-ambient__particle:nth-child(8) { top: 47%; right: 6%; width: .34rem; height: .34rem; opacity: .26; animation-delay: -13s; animation-duration: 20s; }
.public-ambient__particle:nth-child(9) { top: 78%; left: 43%; width: .12rem; height: .12rem; opacity: .32; animation-delay: -6s; animation-duration: 16s; }
.public-ambient__particle:nth-child(10) { top: 31%; right: 34%; width: .2rem; height: .2rem; opacity: .42; animation-delay: -16s; animation-duration: 22s; }
.public-section-particles span:nth-child(9) { left: 12%; bottom: 34%; width: .12rem; height: .12rem; opacity: .31; animation-delay: -2s; animation-duration: 15s; }
.public-section-particles span:nth-child(10) { left: 43%; bottom: 8%; width: .28rem; height: .28rem; opacity: .24; animation-delay: -7s; animation-duration: 14s; }
.public-section-particles span:nth-child(11) { left: 61%; bottom: 30%; width: .12rem; height: .12rem; opacity: .34; animation-delay: -12s; animation-duration: 17s; }
.public-section-particles span:nth-child(12) { left: 91%; bottom: 38%; width: .24rem; height: .24rem; opacity: .25; animation-delay: -5s; animation-duration: 13s; }
/* El shell compartido conserva las proporciones del encabezado del Inicio. */
.susbi-public-shell__nav .public-brand,
.susbi-public-shell__nav .public-brand span,
.susbi-public-shell__nav .public-nav__login,
.susbi-public-shell__nav .btn-magnetic {
  flex-shrink: 0;
  white-space: nowrap;
}
.susbi-public-shell__nav .public-nav__link {
  min-height: 0;
  padding-inline: 0;
  border-radius: 0;
  color: rgba(248, 250, 252, 0.92);
}
.susbi-public-shell__nav .public-nav__link:hover,
.susbi-public-shell__nav .public-nav__link[aria-current="page"] {
  color: #ffffff;
  background: transparent;
  box-shadow: none;
}
.susbi-public-shell__nav .public-nav__login {
  min-height: 0;
  padding-inline: 0.75rem;
  color: #ffffff;
}
.susbi-public-shell__nav .public-nav__login:hover { background: transparent; }