.china-night-page {
  --china-red: oklch(42% 0.17 28);
  --china-red-bright: oklch(56% 0.205 29);
  --china-oxblood: oklch(24% 0.08 25);
  --china-gold: oklch(78% 0.105 82);
  --china-ivory: oklch(96% 0.025 83);
  --china-ink: oklch(17% 0.025 31);
  background: var(--china-ivory);
}

.china-night-page .site-header {
  border-color: oklch(75% 0.045 75 / 0.42);
  background: oklch(96% 0.02 78 / 0.92);
}

.china-night-page .brand-mark::before {
  border-color: var(--china-red-bright);
}

.china-night-main {
  min-height: calc(100dvh - 64px);
  background:
    linear-gradient(oklch(40% 0.04 65 / 0.045) 1px, transparent 1px),
    linear-gradient(90deg, oklch(40% 0.04 65 / 0.045) 1px, transparent 1px),
    var(--china-ivory);
  background-size: 48px 48px;
}

.china-night-layout {
  display: grid;
  min-height: calc(100dvh - 64px);
  grid-template-columns: minmax(24rem, 0.9fr) minmax(34rem, 1.1fr);
}

.china-night-poster {
  position: sticky;
  top: 64px;
  min-height: calc(100dvh - 64px);
  height: calc(100dvh - 64px);
  overflow: hidden;
  color: var(--china-ivory);
  background: var(--china-red);
}

.china-night-poster > img,
.poster-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.china-night-poster > img {
  object-fit: cover;
  object-position: 58% center;
  filter: saturate(0.93) contrast(1.04);
}

.poster-shade {
  background:
    linear-gradient(180deg, oklch(16% 0.05 26 / 0.5), transparent 28%),
    linear-gradient(90deg, oklch(17% 0.08 26 / 0.56), transparent 68%),
    linear-gradient(0deg, oklch(12% 0.05 24 / 0.54), transparent 32%);
}

.poster-copy {
  position: relative;
  z-index: 1;
  display: grid;
  min-height: 100%;
  align-content: space-between;
  gap: 2rem;
  padding: clamp(1.5rem, 4vw, 4rem);
}

.poster-topline,
.poster-details {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.poster-topline {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid oklch(95% 0.04 82 / 0.45);
}

.poster-title-block {
  max-width: 34rem;
}

.poster-chinese {
  margin: 0 0 0.5rem;
  color: var(--china-gold);
  font-family: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  font-size: clamp(1.2rem, 2.4vw, 2rem);
  font-weight: 600;
  letter-spacing: 0.24em;
}

.poster-title-block h1 {
  max-width: none;
  margin: 0;
  color: var(--china-ivory);
  font-size: clamp(4.3rem, 9.2vw, 8.5rem);
  font-weight: 720;
  letter-spacing: 0;
  line-height: 0.75;
  text-transform: uppercase;
  text-wrap: balance;
}

.poster-idea {
  max-width: 24rem;
  margin: clamp(1.5rem, 4vh, 2.8rem) 0 0;
  color: oklch(94% 0.035 82);
  font-family: "Songti SC", "STSong", Georgia, serif;
  font-size: clamp(1rem, 1.5vw, 1.3rem);
  line-height: 1.42;
}

.poster-details {
  display: grid;
  max-width: 26rem;
  grid-template-columns: auto 1fr;
  gap: 0.25rem 1.2rem;
  align-items: baseline;
}

.poster-details span {
  color: var(--china-gold);
}

.poster-details strong {
  color: var(--china-ivory);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: none;
}

.poster-seal {
  position: absolute;
  right: clamp(1.2rem, 3vw, 2.5rem);
  bottom: clamp(1.2rem, 3vw, 2.5rem);
  z-index: 2;
  display: grid;
  width: 3.25rem;
  height: 3.25rem;
  place-items: center;
  border: 1px solid var(--china-ivory);
  color: var(--china-ivory);
  font-family: "Songti SC", "STSong", serif;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  writing-mode: vertical-rl;
}

.china-night-rsvp {
  display: grid;
  min-width: 0;
  align-content: center;
  gap: clamp(2rem, 5vh, 3.5rem);
  padding: clamp(2.2rem, 6vw, 7rem) clamp(1.5rem, 7vw, 8rem) clamp(2rem, 5vw, 5rem);
}

.rsvp-intro,
.china-night-form,
.china-rsvp-success,
.rsvp-footer {
  width: 100%;
  max-width: 44rem;
  margin-inline: auto;
}

.rsvp-kicker {
  margin: 0 0 1rem;
  color: var(--china-red-bright);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 720;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.rsvp-intro h2,
.china-rsvp-success h2 {
  max-width: none;
  margin: 0;
  color: var(--china-ink);
  font-family: "Songti SC", "STSong", Georgia, serif;
  font-size: clamp(2.4rem, 4.4vw, 4.8rem);
  font-weight: 650;
  letter-spacing: 0;
  line-height: 0.97;
}

.rsvp-intro > p:last-child {
  max-width: 38rem;
  margin: 1.4rem 0 0;
  color: oklch(38% 0.025 38);
  font-size: 1.02rem;
  line-height: 1.7;
}

.china-night-form {
  display: grid;
  gap: 1.4rem;
}

.china-night-form[hidden],
.china-rsvp-success[hidden] {
  display: none;
}

.china-form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.china-field {
  display: grid;
  gap: 0.5rem;
}

.china-field > span,
.china-choice legend {
  color: var(--china-ink);
  font-size: 0.76rem;
  font-weight: 720;
  letter-spacing: 0.045em;
  text-transform: uppercase;
}

.china-field > span small {
  color: oklch(51% 0.02 40);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0;
  text-transform: none;
}

.china-field input,
.china-field select {
  width: 100%;
  min-height: 3.65rem;
  border: 1px solid oklch(70% 0.035 62);
  border-radius: 2px;
  padding: 0.85rem 1rem;
  color: var(--china-ink);
  background: oklch(99% 0.012 82);
  outline: none;
  transition: border-color 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.china-field input::placeholder {
  color: oklch(65% 0.025 52);
}

.china-field input:focus,
.china-field select:focus,
.china-segmented input:focus-visible + span {
  border-color: var(--china-red-bright);
  box-shadow: 0 0 0 3px oklch(56% 0.205 29 / 0.13);
}

.china-field input[aria-invalid="true"] {
  border-color: var(--china-red-bright);
  background: oklch(97% 0.025 28);
}

.china-choice {
  min-width: 0;
  margin: 0;
  border: 0;
  padding: 0;
}

.china-choice legend {
  margin-bottom: 0.65rem;
}

.china-segmented {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  border: 1px solid oklch(70% 0.035 62);
  border-radius: 2px;
  padding: 0.25rem;
  background: oklch(99% 0.012 82);
}

.china-segmented label {
  position: relative;
}

.china-segmented input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
}

.china-segmented span {
  display: grid;
  min-height: 3rem;
  place-items: center;
  padding: 0.7rem 1rem;
  color: oklch(43% 0.025 38);
  font-size: 0.88rem;
  font-weight: 620;
  text-align: center;
  transition: color 180ms ease, background 180ms ease;
}

.china-segmented input:checked + span {
  color: var(--china-ivory);
  background: var(--china-red);
}

.china-party-field {
  max-width: 18rem;
  opacity: 0.55;
  transition: opacity 220ms ease;
}

.china-party-field[data-enabled="true"] {
  opacity: 1;
}

.china-party-field select:disabled {
  cursor: not-allowed;
}

.field-note {
  color: oklch(49% 0.02 40);
  font-size: 0.78rem;
}

.china-submit-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1.5rem;
  align-items: center;
  margin-top: 0.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid oklch(72% 0.035 62);
}

.china-submit-row p {
  max-width: 24rem;
  margin: 0;
  color: oklch(48% 0.02 40);
  font-size: 0.78rem;
  line-height: 1.5;
}

.china-submit-row button {
  display: inline-flex;
  min-height: 3.65rem;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  border: 0;
  border-radius: 2px;
  padding: 0.8rem 1.2rem;
  color: var(--china-ivory);
  background: var(--china-red);
  font-weight: 720;
  transition: transform 180ms cubic-bezier(0.16, 1, 0.3, 1), background 180ms ease;
}

.china-submit-row button:hover:not(:disabled),
.china-submit-row button:focus-visible:not(:disabled) {
  background: var(--china-red-bright);
  transform: translateY(-2px);
}

.china-submit-row button:disabled {
  cursor: wait;
  opacity: 0.68;
}

.china-form-status {
  min-height: 1.5rem;
  margin: -0.6rem 0 0;
  color: var(--china-red);
  font-size: 0.84rem;
}

.china-form-status[data-state="success"] {
  color: oklch(42% 0.105 150);
}

.china-honeypot {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
}

.china-rsvp-success {
  padding: clamp(2rem, 5vw, 4rem) 0;
  border-top: 1px solid oklch(72% 0.035 62);
  border-bottom: 1px solid oklch(72% 0.035 62);
  outline: none;
}

.success-mark {
  display: grid;
  width: 3rem;
  height: 3rem;
  place-items: center;
  margin-bottom: 1.5rem;
  border-radius: 50%;
  color: var(--china-ivory);
  background: var(--china-red);
  font-size: 1.2rem;
}

.china-rsvp-success > p:not(.rsvp-kicker) {
  max-width: 36rem;
  margin: 1.2rem 0;
  color: oklch(38% 0.025 38);
}

.china-rsvp-success dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.35rem 1.2rem;
  margin: 1.8rem 0 0;
  font-size: 0.9rem;
}

.china-rsvp-success dt {
  color: var(--china-red-bright);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
}

.china-rsvp-success dd {
  margin: 0;
  color: var(--china-ink);
  font-weight: 600;
}

.rsvp-footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1rem;
  border-top: 1px solid oklch(72% 0.035 62);
  color: oklch(45% 0.035 38);
  font-family: "Songti SC", "STSong", Georgia, serif;
  font-size: 0.88rem;
}

.debug-ribbon {
  position: fixed;
  right: 0;
  bottom: 0;
  z-index: 40;
  padding: 0.45rem 0.75rem;
  color: var(--china-ink);
  background: var(--china-gold);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
}

@media (max-width: 1040px) {
  .china-night-layout {
    grid-template-columns: minmax(20rem, 0.82fr) minmax(28rem, 1.18fr);
  }

  .china-night-rsvp {
    padding-inline: clamp(1.5rem, 4vw, 3.5rem);
  }
}

@media (max-width: 820px) {
  .china-night-layout {
    grid-template-columns: 1fr;
  }

  .china-night-poster {
    position: relative;
    top: auto;
    min-height: min(78rem, calc(100svh - 64px));
    height: min(78rem, calc(100svh - 64px));
  }

  .poster-title-block h1 {
    font-size: clamp(4.6rem, 18vw, 8rem);
  }
}

@media (max-width: 760px) {
  .china-night-page .nav-links {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    font-size: 0.8rem;
  }

  .china-night-main {
    min-height: auto;
  }

  .china-night-poster {
    min-height: calc(100svh - 166px);
    height: calc(100svh - 166px);
  }

  .poster-copy {
    padding: 1.25rem;
  }

  .poster-topline span:last-child {
    display: none;
  }

  .poster-title-block h1 {
    font-size: clamp(4.1rem, 22vw, 6.4rem);
  }

  .poster-seal {
    right: 1.25rem;
    bottom: 1.25rem;
  }

  .china-night-rsvp {
    padding: 3.5rem 1.15rem 2rem;
  }

  .china-form-row,
  .china-submit-row {
    grid-template-columns: 1fr;
  }

  .china-submit-row button,
  .china-party-field {
    width: 100%;
    max-width: none;
  }
}

@media (max-width: 390px) {
  .china-segmented span {
    padding-inline: 0.5rem;
    font-size: 0.8rem;
  }

  .poster-details {
    grid-template-columns: 1fr;
  }
}