.registration-page .registration-main {
  width: 100%;
  max-width: 100%;
  overflow: hidden;
}

.registration-page .registration-hero {
  position: relative;
  padding: clamp(128px, 10vw, 152px) 24px 48px;
  text-align: center;
  isolation: isolate;
}

.registration-page .registration-hero::before {
  position: absolute;
  z-index: -1;
  inset: 0;
  content: "";
  background: radial-gradient(ellipse at 50% 65%, rgba(0, 181, 226, 0.13), transparent 62%);
  pointer-events: none;
}

.registration-page .registration-hero h1 {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  font-size: clamp(3.5rem, 7vw, 6rem);
  font-weight: 400;
  letter-spacing: 0.035em;
  line-height: 1.05;
}

.registration-page .registration-hero h1 span {
  color: var(--cyan);
}

.registration-page .registration-intro {
  margin: 18px auto 0;
  max-width: 580px;
  color: var(--muted);
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  line-height: 1.6;
}

.registration-page .registration-hero::after {
  display: block;
  width: 64px;
  height: 2px;
  margin: 24px auto 0;
  content: "";
  background: var(--orange);
}

.registration-page .registration-options {
  display: grid;
  grid-auto-flow: dense;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  width: min(1160px, calc(100% - 64px));
  margin: 0 auto;
  padding-bottom: clamp(88px, 10vw, 160px);
}

.registration-page .registration-card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  min-height: 360px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: linear-gradient(125deg, rgba(0, 181, 226, 0.045), transparent 65%), var(--bg-soft);
  box-shadow: 0 18px 54px rgba(0, 12, 28, 0.12);
}

.registration-page .registration-art {
  position: relative;
  display: grid;
  place-items: center;
  min-width: 0;
  overflow: hidden;
  isolation: isolate;
  background: radial-gradient(ellipse at 50% 50%, #124968 0%, #07283f 45%, #041b30 85%);
}

.registration-page .registration-art::before {
  position: absolute;
  z-index: -1;
  inset: 0;
  content: "";
  opacity: 0.4;
  background-image: linear-gradient(rgba(0, 181, 226, 0.15) 1px, transparent 1px), linear-gradient(90deg, rgba(0, 181, 226, 0.15) 1px, transparent 1px);
  background-size: 38px 38px;
  mask-image: radial-gradient(ellipse, black, transparent 75%);
}

.registration-page .registration-art img {
  display: block;
  width: 100%;
  height: 100%;
  max-height: 390px;
  object-fit: contain;
}

.registration-page .registration-art-challenge {
  background: radial-gradient(ellipse at 52% 55%, #493630 0%, #112b40 48%, #041b30 85%);
}

.registration-page .registration-art-challenge img {
  width: 80%;
  height: 340px;
  padding: 22px;
  filter: drop-shadow(0 14px 30px rgba(0, 181, 226, 0.16));
}

.registration-page .registration-orbit {
  position: absolute;
  z-index: -1;
  width: 75%;
  aspect-ratio: 1;
  border: 1px solid rgba(0, 181, 226, 0.3);
  border-radius: 50%;
  transform: rotate(-28deg) scaleY(0.58);
  box-shadow: 0 0 0 28px rgba(0, 181, 226, 0.025), 0 0 0 56px rgba(0, 181, 226, 0.02);
}

.registration-page .registration-card-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: clamp(32px, 4vw, 60px);
}

.registration-page .registration-card h2 {
  max-width: 100%;
  margin: 0;
  font-size: clamp(2.2rem, 3.3vw, 3.15rem);
  font-weight: 400;
  line-height: 1.12;
  text-wrap: balance;
}

.registration-page .registration-card-copy p {
  max-width: 360px;
  margin: 20px 0 30px;
  color: var(--muted);
  font-size: 1.15rem;
  line-height: 1.65;
}

.registration-page .registration-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  max-width: 100%;
  padding: 12px 18px;
  border: 1px solid var(--cyan);
  border-radius: 6px;
  background: var(--cyan);
  color: #00182a;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.4;
  text-decoration: none;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.registration-page .registration-action:hover,
.registration-page .registration-action:focus-visible {
  border-color: #33c5e8;
  background: #33c5e8;
  color: #00182a;
  box-shadow: 0 12px 26px rgba(0, 181, 226, 0.26);
  transform: translateY(-2px);
}

.registration-page .registration-action:focus-visible {
  outline: 3px solid var(--orange);
  outline-offset: 3px;
}

.registration-page .registration-action:active {
  transform: translateY(0);
}

.registration-page .registration-action:disabled {
  border-color: var(--line);
  background: var(--surface-strong);
  color: var(--muted);
  cursor: not-allowed;
  opacity: 1;
}

.registration-page .registration-action svg {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
}

.registration-page .registration-art-attendance img {
  object-fit: cover;
}

@media (max-width: 767px) {
  .registration-page .registration-hero {
    padding: 128px 24px 36px;
  }

  .registration-page .registration-hero h1 {
    font-size: clamp(3.25rem, 12vw, 4rem);
  }

  .registration-page .registration-options {
    width: calc(100% - 32px);
    gap: 24px;
  }

  .registration-page .registration-card {
    grid-template-columns: minmax(0, 1fr);
    border-radius: 12px;
  }

  .registration-page .registration-art {
    height: 248px;
  }

  .registration-page .registration-art-challenge img {
    height: 250px;
    padding: 10px;
  }

  .registration-page .registration-card-copy {
    padding: 32px 26px 36px;
  }

  .registration-page .registration-card-copy p {
    margin: 16px 0 24px;
    font-size: 1.1rem;
  }
}