.sign-in-page {
  display: grid;
  min-height: 100vh;
  grid-template-columns: minmax(0, 1.12fr) minmax(420px, 0.88fr);
  overflow: hidden;
  background: var(--bg);
}
.sign-in-story,
.sign-in-access {
  position: relative;
  min-width: 0;
  padding: clamp(32px, 5vw, 76px);
}
.sign-in-story {
  display: flex;
  min-height: 100vh;
  flex-direction: column;
  justify-content: space-between;
  color: var(--primary-foreground);
  background: linear-gradient(
    145deg,
    color-mix(in oklch, var(--brand-accent) 74%, #111317),
    #111317 68%
  );
  isolation: isolate;
}
.sign-in-story::before,
.sign-in-story::after {
  position: absolute;
  z-index: -1;
  content: "";
  pointer-events: none;
}
.sign-in-story::before {
  inset: 0;
  opacity: 0.14;
  background-image:
    linear-gradient(color-mix(in srgb, white 20%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, white 20%, transparent) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom right, black, transparent 70%);
}
.sign-in-story::after {
  right: clamp(24px, 7vw, 112px);
  bottom: clamp(120px, 18vh, 220px);
  width: clamp(160px, 23vw, 340px);
  height: 3px;
  background: var(--brand-accent);
  box-shadow:
    0 18px 0 color-mix(in srgb, var(--brand-accent) 64%, transparent),
    0 36px 0 color-mix(in srgb, var(--brand-accent) 28%, transparent);
  transform: rotate(-11deg);
  transform-origin: right center;
}
.sign-in-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  font-weight: 720;
  letter-spacing: 0.16em;
}
.sign-in-brand img {
  width: 34px;
  height: 34px;
  object-fit: contain;
}
.sign-in-story-copy {
  max-width: 690px;
  margin: clamp(80px, 18vh, 180px) 0 auto;
  animation: sign-in-enter 520ms cubic-bezier(0.16, 1, 0.3, 1) both;
}
.sign-in-kicker,
.sign-in-step {
  margin: 0 0 18px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.14em;
}
.sign-in-kicker {
  color: color-mix(in srgb, var(--brand-accent) 74%, white);
}
.sign-in-story h1 {
  max-width: 650px;
  margin: 0;
  color: white;
  font-size: clamp(42px, 5.7vw, 76px);
  font-weight: 590;
  letter-spacing: -0.055em;
  line-height: 0.98;
}
.sign-in-story-copy > p:last-child {
  max-width: 580px;
  margin: 28px 0 0;
  color: color-mix(in srgb, white 69%, transparent);
  font-size: clamp(15px, 1.35vw, 18px);
  line-height: 1.65;
}
.sign-in-assurance {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  padding-top: 36px;
  color: color-mix(in srgb, white 76%, transparent);
  border-top: 1px solid color-mix(in srgb, white 16%, transparent);
  font-size: 12px;
}
.sign-in-assurance span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.sign-in-access {
  display: flex;
  min-height: 100vh;
  flex-direction: column;
  justify-content: center;
  background:
    radial-gradient(
      circle at 100% 0%,
      color-mix(in oklch, var(--brand-accent) 8%, transparent),
      transparent 38%
    ),
    var(--bg);
}
.sign-in-access-inner {
  width: min(100%, 470px);
  margin: auto;
  animation: sign-in-enter 520ms 90ms cubic-bezier(0.16, 1, 0.3, 1) both;
}
.sign-in-step {
  color: var(--brand-accent);
}
.sign-in-access h2 {
  margin: 0;
  color: var(--text-primary);
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 620;
  letter-spacing: -0.035em;
  line-height: 1.08;
}
.sign-in-intro {
  margin: 18px 0 32px;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
}
.sign-in-notice {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 0 0 18px;
  padding: 14px 15px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  font-size: 12px;
  line-height: 1.55;
}
.sign-in-notice.is-error {
  display: grid;
  color: var(--status-danger);
  background: var(--status-danger-soft);
  border-color: color-mix(in oklch, var(--status-danger) 34%, var(--border-subtle));
}
.sign-in-notice.is-success {
  color: var(--status-success);
  background: color-mix(in oklch, var(--status-success) 8%, var(--surface-1));
  border-color: color-mix(in oklch, var(--status-success) 30%, var(--border-subtle));
}
.sign-in-notice span,
.sign-in-notice strong {
  display: block;
}
.sign-in-button {
  width: 100%;
  min-height: 48px;
  justify-content: space-between;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 30px color-mix(in oklch, var(--brand-accent) 18%, transparent);
  font-weight: 650;
}
.sign-in-button span {
  font-size: 18px;
  transition: transform 160ms ease;
}
.sign-in-button:hover span {
  transform: translateX(3px);
}
.sign-in-button:focus-visible,
.sign-in-help a:focus-visible {
  outline: 3px solid color-mix(in oklch, var(--brand-accent) 32%, transparent);
  outline-offset: 3px;
}
.sign-in-help {
  margin: 20px 0 0;
  color: var(--text-tertiary);
  font-size: 12px;
  line-height: 1.6;
}
.sign-in-help a {
  color: var(--text-secondary);
  text-decoration: underline;
  text-decoration-color: var(--border-strong);
  text-underline-offset: 3px;
}
.sign-in-access footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 48px;
  color: var(--text-tertiary);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.08em;
}
@keyframes sign-in-enter {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@media (max-width: 880px) {
  .sign-in-page {
    grid-template-columns: 1fr;
    overflow: visible;
  }
  .sign-in-story,
  .sign-in-access {
    min-height: auto;
  }
  .sign-in-story {
    gap: 52px;
    padding-bottom: 44px;
  }
  .sign-in-story-copy {
    margin: 42px 0 0;
  }
  .sign-in-story h1 {
    max-width: 720px;
    font-size: clamp(38px, 10vw, 62px);
  }
  .sign-in-story::after {
    display: none;
  }
  .sign-in-access {
    min-height: 540px;
  }
}
@media (max-width: 520px) {
  .sign-in-story,
  .sign-in-access {
    padding: 28px 22px;
  }
  .sign-in-assurance,
  .sign-in-access footer {
    display: grid;
  }
}
@media (prefers-reduced-motion: reduce) {
  .sign-in-story-copy,
  .sign-in-access-inner {
    animation: none;
  }
  .sign-in-button span {
    transition: none;
  }
}