.ins-reg { max-width: 72rem; margin: 0 auto; padding: 1.5rem 1rem 3rem; }
.ins-reg__top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; }
.ins-reg__brand { display: flex; align-items: center; gap: 0.65rem; }
.ins-reg__help { display: inline-flex; align-items: center; gap: 0.35rem; font-size: 0.8rem; font-weight: 700; color: #6b7280; }
.ins-reg__layout { display: grid; grid-template-columns: 1fr 1.15fr; gap: 1.25rem; align-items: start; }
@media (max-width: 900px) { .ins-reg__layout { grid-template-columns: 1fr; } }
.ins-reg__hero-card {
  background: linear-gradient(160deg, #f5f3ff, #ede9fe);
  border-radius: 1.25rem; padding: 1.5rem; border: 1px solid #ddd6fe;
}
.ins-reg__illus { font-size: 3rem; margin-bottom: 0.75rem; }
.ins-reg__hero-card h1 { font-size: 1.35rem; font-weight: 800; color: #1e1b4b; margin-bottom: 0.5rem; }
.ins-reg__hero-card > p { font-size: 0.85rem; color: #4b5563; line-height: 1.5; margin-bottom: 1rem; }
.ins-reg__features { list-style: none; padding: 0; margin: 0 0 1rem; display: flex; flex-direction: column; gap: 0.65rem; }
.ins-reg__features li { display: flex; gap: 0.5rem; font-size: 0.78rem; }
.ins-reg__features .material-symbols-rounded { color: #5b47fb; }
.ins-reg__features strong { display: block; font-size: 0.8rem; }
.ins-reg__features span { color: #6b7280; }
.ins-reg__support {
  display: flex; gap: 0.5rem; background: #fff; border-radius: 0.85rem; padding: 0.75rem;
  border: 1px solid #e5e7eb; font-size: 0.75rem;
}
.ins-reg__support .material-symbols-rounded { color: #059669; }
.ins-reg__form-wrap { background: #fff; border: 1px solid #e5e7eb; border-radius: 1.25rem; padding: 1.25rem; }
.ins-reg__form h2 { font-size: 0.95rem; font-weight: 800; color: #312e81; margin: 1rem 0 0.65rem; }
.ins-reg__form h2:first-child { margin-top: 0; }
.ins-reg__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.65rem; }
@media (max-width: 640px) { .ins-reg__grid { grid-template-columns: 1fr; } }
.ins-reg__field { display: flex; flex-direction: column; gap: 0.25rem; }
.ins-reg__field--full { grid-column: 1 / -1; }
.ins-reg__field span { font-size: 0.68rem; font-weight: 700; color: #6b7280; }
.ins-reg__field input, .ins-reg__field select {
  border: 1px solid #e5e7eb; border-radius: 0.65rem; padding: 0.55rem 0.7rem; font-size: 0.8rem;
}
.ins-reg__pwd-hint {
  font-size: 0.72rem; background: #ecfdf5; color: #047857; border-radius: 0.65rem;
  padding: 0.55rem 0.7rem; margin-top: 0.5rem;
}
.ins-reg__terms { display: flex; gap: 0.5rem; font-size: 0.75rem; margin: 1rem 0; align-items: flex-start; }
.ins-reg__submit {
  width: 100%; display: flex; align-items: center; justify-content: center; gap: 0.35rem;
  background: #5b47fb; color: #fff; font-weight: 800; padding: 0.75rem; border-radius: 999px; font-size: 0.9rem;
}
.ins-reg__login { text-align: center; font-size: 0.8rem; color: #6b7280; margin-top: 0.85rem; }
.ins-reg__login a { color: #5b47fb; font-weight: 800; }
.ins-reg__error {
  background: #fef2f2; color: #b91c1c; border: 1px solid #fecaca; border-radius: 0.65rem;
  padding: 0.65rem; font-size: 0.8rem; margin-bottom: 0.75rem;
}