@font-face {
  font-family: "Wedding Serif";
  src: url("./fonts/cormorant-garamond-400.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Wedding Serif";
  src: url("./fonts/cormorant-garamond-400-italic.woff2") format("woff2");
  font-style: italic;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Wedding Serif";
  src: url("./fonts/cormorant-garamond-500.woff2") format("woff2");
  font-style: normal;
  font-weight: 500;
  font-display: swap;
}

@font-face {
  font-family: "Wedding Serif";
  src: url("./fonts/cormorant-garamond-600.woff2") format("woff2");
  font-style: normal;
  font-weight: 600;
  font-display: swap;
}

@font-face {
  font-family: "Wedding Script";
  src: url("./fonts/windsong-400.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Wedding Script";
  src: url("./fonts/windsong-500.woff2") format("woff2");
  font-style: normal;
  font-weight: 500;
  font-display: swap;
}

:root {
  --paper: #f2eee8;
  --paper-light: #fbfaf7;
  --ink: #17333d;
  --ink-soft: #5b696d;
  --line: #a38650;
  --line-soft: rgba(163, 134, 80, 0.34);
  --night: #17333d;
  --night-ink: #f7f2e9;
  --signature: "Wedding Script", "Segoe Script", cursive;
  --english: "Wedding Serif", Georgia, "Times New Roman", serif;
  --chinese: "Songti SC", "STSong", "SimSun", serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--english);
  font-size: 1.1875rem;
  font-weight: 400;
  line-height: 1.65;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

html[lang="zh-CN"] body {
  font-family: var(--chinese);
  font-size: 1.0625rem;
  line-height: 1.8;
}

button,
input,
select,
textarea {
  font: inherit;
}

.honeypot {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
  clip: rect(0 0 0 0) !important;
  white-space: nowrap !important;
}

.submission-status {
  min-height: 1.8rem;
  margin: 1rem 0 0;
  text-align: center;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.submission-status[data-type="success"] {
  color: #2d604c;
}

.submission-status[data-type="error"] {
  color: #8b3c35;
}

.submit-button:disabled {
  cursor: wait;
  opacity: 0.62;
}

.edit-link-panel {
  margin: 2rem 0;
  padding: 1.4rem;
  border: 1px solid var(--line-soft);
  background: rgba(251, 250, 247, 0.6);
}

.edit-link-panel > label {
  display: block;
  margin-bottom: 0.75rem;
  font-weight: 600;
}

.edit-link-panel > div {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.75rem;
}

.edit-link-panel input {
  width: 100%;
  min-width: 0;
  padding: 0.75rem;
  border: 1px solid var(--line-soft);
  color: var(--ink);
  background: var(--paper-light);
}

.edit-link-panel p {
  margin: 0.75rem 0 0;
  color: var(--ink-soft);
  font-size: 0.85rem;
}

button,
a,
label {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  min-height: 4.5rem;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0.8rem clamp(1rem, 4vw, 3.5rem);
  background: rgba(242, 238, 232, 0.94);
  background: color-mix(in srgb, var(--paper) 90%, transparent);
  border-bottom: 1px solid var(--line-soft);
  backdrop-filter: blur(14px);
}

.wordmark {
  width: max-content;
  display: flex;
  gap: 0.55rem;
  align-items: baseline;
  text-decoration: none;
  font-family: var(--english);
  font-size: clamp(1rem, 1.7vw, 1.25rem);
  font-weight: 500;
  letter-spacing: 0.12em;
}

.wordmark i {
  color: var(--line);
  font-weight: 300;
}

.section-nav {
  display: flex;
  gap: clamp(1rem, 3vw, 2.6rem);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.section-nav a {
  text-decoration: none;
}

.section-nav a:hover,
.section-nav a:focus-visible {
  text-decoration: underline;
  text-underline-offset: 0.45rem;
}

.language-switch {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
}

.language-switch button {
  appearance: none;
  border: 0;
  padding: 0.35rem;
  color: var(--ink-soft);
  background: transparent;
  cursor: pointer;
}

.language-switch button[aria-pressed="true"] {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 0.3rem;
}

.language-switch button[data-lang="en"] {
  font-family: var(--english);
}

.language-switch button[data-lang="zh"] {
  font-family: var(--chinese);
}

.hero {
  min-height: max(48rem, calc(100svh - 4.5rem));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: clamp(7rem, 12vh, 11rem) 1.25rem clamp(5rem, 9vh, 8rem);
  text-align: center;
}

.survey-kicker {
  margin: 0 0 1.75rem;
  font-family: var(--english);
  font-size: clamp(3.5rem, 6.5vw, 6.25rem);
  font-weight: 500;
  line-height: 0.92;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-signature {
  width: 100%;
}

.hero h1 {
  margin: 0;
  font-family: var(--signature);
  font-size: clamp(7rem, 13vw, 11.5rem);
  font-weight: 400;
  line-height: 0.78;
  letter-spacing: -0.055em;
  white-space: nowrap;
}

.hero-signature-subtitle {
  margin: 1.1rem 0 0;
  font-family: var(--signature);
  font-size: clamp(3.1rem, 5.5vw, 5rem);
  font-weight: 400;
  line-height: 1;
}

.hero-dateline {
  margin: clamp(3rem, 7vh, 5.25rem) 0 0;
  font-family: var(--english);
  font-size: clamp(0.82rem, 1.25vw, 1rem);
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

.hero-rule {
  width: min(28rem, 62vw);
  height: 1px;
  margin: clamp(3rem, 7vh, 5rem) auto clamp(2.2rem, 4vh, 3.25rem);
  background: var(--line-soft);
}

.hero-lede {
  margin: 0;
  font-family: var(--english);
  font-size: clamp(1.75rem, 3vw, 2.65rem);
  line-height: 1.35;
  font-style: italic;
}

.hero-note {
  max-width: 46rem;
  margin: 1.2rem auto 0;
  color: var(--ink-soft);
}

.route-line {
  width: min(60rem, 92vw);
  display: grid;
  grid-template-columns: auto 1fr auto 1fr auto 1fr auto;
  align-items: center;
  gap: 0.75rem;
  margin-top: clamp(4rem, 9vh, 7rem);
  font-family: var(--english);
  font-size: clamp(0.85rem, 1.5vw, 1.05rem);
  font-weight: 500;
  letter-spacing: 0.16em;
}

.route-line b {
  height: 1px;
  background: var(--line-soft);
}

.provisional {
  margin-top: 1.8rem;
  padding: 0.55rem 1rem;
  border: 1px solid var(--line-soft);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
}

.journey,
.survey-shell {
  padding: clamp(7rem, 12vw, 11rem) clamp(1.2rem, 6vw, 7rem);
}

.journey {
  background: var(--paper-light);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(5rem, 0.35fr) 1fr;
  align-items: start;
  gap: 2rem;
  max-width: 74rem;
  margin: 0 auto clamp(4.5rem, 9vw, 7.5rem);
}

.section-number {
  margin: 0;
  color: var(--line);
  font-family: var(--english);
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: 0.14em;
}

.section-heading h2,
.response-summary h2 {
  margin: 0;
  font-family: var(--english);
  font-size: clamp(3.5rem, 6.5vw, 6.25rem);
  font-weight: 500;
  line-height: 0.96;
  letter-spacing: 0.025em;
}

.survey-intro h2 {
  max-width: 48rem;
  margin: 0 auto;
  font-family: var(--english);
  font-size: clamp(2rem, 3.5vw, 3.25rem);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: 0.015em;
}

html[lang="en"] .section-heading h2 {
  text-transform: uppercase;
}

.section-heading > div > p,
.survey-intro > p:last-child {
  max-width: 48rem;
  margin: 2rem 0 0;
  color: var(--ink-soft);
}

.survey-intro > p:last-child {
  margin-right: auto;
  margin-left: auto;
}

.legend {
  max-width: 74rem;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  margin: 0 auto 1rem;
  background: transparent;
  border: 0;
}

.legend > div {
  display: flex;
  gap: 1rem;
  align-items: center;
  padding: 1.35rem 1.5rem;
  background: rgba(255, 255, 255, 0.38);
  border: 1px solid var(--line-soft);
}

.legend-mark {
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--line);
}

.legend p,
.legend strong,
.legend small {
  display: block;
  margin: 0;
}

.legend strong {
  font-weight: 500;
  letter-spacing: 0.05em;
}

.legend small {
  color: var(--ink-soft);
}

.itinerary-list {
  max-width: 74rem;
  display: grid;
  gap: 1.25rem;
  margin: 0 auto;
}

.day-card {
  display: grid;
  grid-template-columns: minmax(12rem, 0.32fr) 1fr;
  border: 1px solid var(--line-soft);
  background: rgba(251, 250, 247, 0.7);
}

.day-meta {
  display: grid;
  align-content: center;
  padding: clamp(1.8rem, 3.5vw, 2.8rem);
  border-right: 1px solid var(--line-soft);
}

.day-date {
  margin: 0;
  font-family: var(--english);
  font-size: clamp(2rem, 3.2vw, 2.85rem);
  font-weight: 500;
  line-height: 1;
}

.day-city {
  margin: 0.9rem 0 0;
  color: var(--ink-soft);
  font-family: var(--english);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.day-body {
  display: flex;
  align-items: center;
  padding: clamp(1.8rem, 3.5vw, 2.8rem);
}

.day-details {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(1.5rem, 4vw, 3.5rem);
}

.detail-label {
  display: flex;
  gap: 0.55rem;
  align-items: center;
  margin: 0 0 0.7rem;
  color: var(--ink);
  font-size: 0.86rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.detail-label span {
  color: var(--line);
}

.day-details ul {
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--ink);
  font-size: 1.08rem;
  line-height: 1.62;
}

.day-details li + li {
  margin-top: 0.3rem;
}

.free-days {
  margin: 1rem 0;
  padding: clamp(3.5rem, 7vw, 6rem);
  background: var(--night);
  color: var(--night-ink);
  text-align: center;
}

.free-days .free-date {
  color: #c7b27e;
  font-family: var(--english);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.25em;
}

.free-days h3 {
  max-width: 58rem;
  margin: 1.8rem auto;
  font-family: var(--english);
  font-size: clamp(3.25rem, 6vw, 5.75rem);
  font-weight: 500;
  line-height: 0.92;
  letter-spacing: 0.035em;
}

.free-days > p {
  max-width: 44rem;
  margin: 0 auto;
  color: #d5d0c7;
  line-height: 1.7;
}

.free-options {
  max-width: 55rem;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  margin: 3rem auto;
  background: rgba(199, 178, 126, 0.55);
  border: 1px solid rgba(199, 178, 126, 0.55);
}

.free-options div {
  padding: 2rem;
  background: var(--night);
}

.free-options strong,
.free-options span {
  display: block;
}

.free-options strong {
  font-family: var(--english);
  font-size: 1.55rem;
  font-weight: 500;
  letter-spacing: 0.06em;
}

.free-options span {
  margin-top: 0.45rem;
  color: #d5d0c7;
}

.reunion-note {
  font-family: var(--english);
  font-size: clamp(1.55rem, 3vw, 2.25rem);
  font-style: normal;
}

.survey-shell {
  background: var(--paper);
}

.survey-intro,
#survey-form,
.response-summary {
  max-width: 60rem;
  margin: 0 auto;
}

.survey-intro {
  padding-bottom: clamp(4.5rem, 8vw, 7rem);
  text-align: center;
}

.survey-intro .section-number {
  margin-bottom: 2.5rem;
}

.form-section {
  margin: 0;
  padding: clamp(3rem, 6vw, 5rem) 0;
  border: 0;
  border-top: 1px solid var(--line-soft);
}

.form-section legend {
  width: 100%;
  margin: 0 0 2rem;
  padding: 0;
  font-family: var(--english);
  font-size: clamp(2.15rem, 4vw, 3.25rem);
  font-weight: 500;
  line-height: 1.2;
}

.field-grid,
.stay-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.identity-section label,
.note-section label {
  display: grid;
  gap: 0.55rem;
  color: var(--ink-soft);
  font-size: 0.98rem;
}

.identity-section > label {
  margin-top: 1.3rem;
}

input[type="text"],
select,
textarea {
  width: 100%;
  border: 1px solid var(--line-soft);
  border-radius: 0;
  padding: 1.05rem 1.1rem;
  color: var(--ink);
  background: rgba(247, 244, 239, 0.58);
  outline: none;
}

input[type="text"]:focus,
select:focus,
textarea:focus {
  border-color: var(--line);
  box-shadow: 0 0 0 3px rgba(165, 139, 85, 0.13);
}

textarea {
  resize: vertical;
}

.field-hint {
  margin: -1rem 0 2.1rem;
  color: var(--ink-soft);
}

.choice-list,
.stay-options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

.choice-card,
.radio-card,
.stay-card {
  position: relative;
  min-height: 6rem;
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
  padding: 1.3rem 1.4rem;
  border: 1px solid var(--line-soft);
  background: rgba(247, 244, 239, 0.48);
  cursor: pointer;
}

.choice-card:has(input:checked),
.radio-card:has(input:checked),
.stay-card:has(input:checked) {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper-light);
}

.choice-card input,
.radio-card input,
.stay-card input {
  width: 1.15rem;
  height: 1.15rem;
  margin: 0.25rem 0 0;
  flex: 0 0 auto;
  accent-color: var(--line);
}

.choice-card strong,
.choice-card span,
.radio-card strong,
.radio-card span,
.stay-card strong,
.stay-card span {
  display: block;
}

.choice-card strong,
.radio-card strong,
.stay-card strong {
  font-family: var(--english);
  font-size: 1.22rem;
  font-weight: 500;
  line-height: 1.35;
}

.choice-card span,
.radio-card span,
.stay-card span {
  margin-top: 0.3rem;
  color: var(--ink-soft);
  font-size: 0.96rem;
  line-height: 1.5;
}

.choice-card:has(input:checked) span,
.radio-card:has(input:checked) span,
.stay-card:has(input:checked) span {
  color: rgba(247, 244, 239, 0.72);
}

.radio-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

.stay-columns > div {
  padding: 1.6rem;
  border: 1px solid var(--line-soft);
}

.stay-columns h3 {
  margin: 0 0 1.25rem;
  font-family: var(--english);
  font-size: 1.75rem;
  font-weight: 500;
}

.stay-options {
  grid-template-columns: 1fr;
}

.stay-card {
  min-height: auto;
}

.preview-notice {
  display: flex;
  gap: 1rem;
  align-items: baseline;
  margin: 2rem 0;
  padding: 1.25rem 0;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.preview-notice span {
  color: var(--line);
  font-family: var(--english);
  font-weight: 500;
  letter-spacing: 0.16em;
}

.preview-notice p {
  margin: 0;
}

.submit-button {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border: 1px solid var(--ink);
  padding: 1.35rem 1.5rem;
  color: var(--paper-light);
  background: var(--ink);
  cursor: pointer;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.submit-button:hover,
.submit-button:focus-visible {
  color: var(--ink);
  background: transparent;
}

.response-summary {
  margin-top: 5rem;
  padding: clamp(2.5rem, 6vw, 5rem);
  border: 1px solid var(--line);
  background: var(--paper-light);
}

.response-summary h2 {
  margin: 1rem 0 2rem;
}

.summary-block + .summary-block {
  margin-top: 1.8rem;
  padding-top: 1.8rem;
  border-top: 1px solid var(--line-soft);
}

.summary-block h3 {
  margin: 0 0 0.5rem;
  font-family: var(--english);
  font-size: 1.35rem;
  font-weight: 500;
}

.summary-block p {
  margin: 0;
  color: var(--ink-soft);
}

.text-button {
  margin-top: 2rem;
  border: 0;
  padding: 0.4rem 0;
  color: var(--ink);
  background: transparent;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 0.35rem;
}

footer {
  min-height: 18rem;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  padding: 3rem clamp(1.2rem, 6vw, 7rem);
  color: var(--night-ink);
  background: var(--night);
  font-family: var(--english);
  font-weight: 500;
  letter-spacing: 0.1em;
}

footer p {
  margin: 0;
}

html[lang="zh-CN"] .wordmark,
html[lang="zh-CN"] .hero-lede,
html[lang="zh-CN"] .section-heading h2,
html[lang="zh-CN"] .response-summary h2,
html[lang="zh-CN"] .day-date,
html[lang="zh-CN"] .free-days h3,
html[lang="zh-CN"] .free-options strong,
html[lang="zh-CN"] .reunion-note,
html[lang="zh-CN"] .form-section legend,
html[lang="zh-CN"] .choice-card strong,
html[lang="zh-CN"] .radio-card strong,
html[lang="zh-CN"] .stay-card strong,
html[lang="zh-CN"] .stay-columns h3,
html[lang="zh-CN"] .summary-block h3,
html[lang="zh-CN"] footer {
  font-family: var(--chinese);
}

html[lang="zh-CN"] .hero h1,
html[lang="zh-CN"] .hero-signature-subtitle {
  font-family: var(--signature);
}

html[lang="zh-CN"] .section-heading h2,
html[lang="zh-CN"] .response-summary h2 {
  font-size: clamp(2.6rem, 5.5vw, 4.75rem);
  font-weight: 500;
  line-height: 1.22;
  letter-spacing: 0.08em;
}

html[lang="zh-CN"] .survey-intro h2 {
  font-family: var(--chinese);
  font-size: clamp(1.8rem, 3.6vw, 2.75rem);
  font-weight: 500;
  line-height: 1.45;
  letter-spacing: 0.06em;
}

html[lang="zh-CN"] .day-date {
  font-family: var(--chinese);
  font-size: clamp(1.55rem, 2.5vw, 2.1rem);
  font-weight: 500;
  letter-spacing: 0.05em;
}

html[lang="zh-CN"] .day-city,
html[lang="zh-CN"] .detail-label,
html[lang="zh-CN"] .route-line,
html[lang="zh-CN"] .free-days .free-date {
  font-family: var(--chinese);
  letter-spacing: 0.08em;
  text-transform: none;
}

html[lang="zh-CN"] .survey-kicker,
html[lang="zh-CN"] .hero-dateline,
html[lang="zh-CN"] .section-number,
html[lang="zh-CN"] .preview-notice > span {
  font-family: var(--english);
}

html[lang="zh-CN"] .form-section legend,
html[lang="zh-CN"] .choice-card strong,
html[lang="zh-CN"] .radio-card strong,
html[lang="zh-CN"] .stay-card strong,
html[lang="zh-CN"] .stay-columns h3,
html[lang="zh-CN"] .summary-block h3 {
  font-weight: 500;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 760px) {
  .edit-link-panel > div {
    grid-template-columns: 1fr;
  }

  body {
    font-size: 1.0625rem;
    line-height: 1.68;
  }

  html[lang="zh-CN"] body {
    font-size: 1rem;
    line-height: 1.78;
  }

  .site-header {
    grid-template-columns: 1fr auto;
    min-height: 4rem;
  }

  .section-nav {
    display: none;
  }

  .hero {
    min-height: 44rem;
    padding: 6.5rem 1rem 4.5rem;
  }

  .hero h1 {
    font-size: clamp(3rem, 15vw, 5.2rem);
    line-height: 0.82;
    letter-spacing: -0.065em;
  }

  .hero-signature-subtitle {
    margin-top: 0.9rem;
    font-size: clamp(2.25rem, 10vw, 3.1rem);
  }

  .hero-dateline {
    margin-top: 2.8rem;
    font-size: 0.78rem;
    letter-spacing: 0.22em;
  }

  .hero-rule {
    width: min(18rem, 64vw);
    margin: 3rem auto 2.4rem;
  }

  .hero-lede {
    font-size: clamp(1.45rem, 6.5vw, 1.9rem);
  }

  .hero-note {
    max-width: 22rem;
    margin-top: 1rem;
  }

  .route-line {
    width: 100%;
    grid-template-columns: 1fr;
    gap: 0.4rem;
    margin-top: 4.25rem;
    font-size: 0.85rem;
  }

  .route-line b {
    width: 1px;
    height: 1rem;
    justify-self: center;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 1.25rem;
    margin-bottom: 4rem;
  }

  .section-heading h2,
  .response-summary h2,
  .survey-kicker {
    font-size: clamp(3rem, 15vw, 4.75rem);
  }

  html[lang="zh-CN"] .section-heading h2,
  html[lang="zh-CN"] .response-summary h2 {
    font-size: clamp(2.25rem, 10vw, 3.25rem);
  }

  .journey,
  .survey-shell {
    padding-top: 5.5rem;
    padding-bottom: 5.5rem;
  }

  .legend,
  .field-grid,
  .stay-columns,
  .radio-grid,
  .choice-list,
  .free-options {
    grid-template-columns: 1fr;
  }

  .day-card {
    grid-template-columns: 1fr;
  }

  .day-meta {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    border-right: 0;
    border-bottom: 1px solid var(--line-soft);
  }

  .day-meta > div {
    width: 100%;
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 1rem;
  }

  .day-city {
    margin: 0;
  }

  .day-details {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }

  .detail-group:empty {
    display: none;
  }

  .free-days {
    text-align: left;
  }

  .free-days > p,
  .free-days h3,
  .free-options {
    margin-left: 0;
  }

  footer {
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-end;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

/* City chapters and the revised RSVP share the established editorial system. */
.hero h1 {
  font-size: clamp(6.4rem, 12vw, 10.8rem);
}

.hero-signature-subtitle {
  max-width: 52rem;
  margin: 2.3rem auto 0;
  font-family: var(--english);
  font-size: clamp(1.35rem, 2.4vw, 2rem);
  font-style: italic;
  line-height: 1.45;
  letter-spacing: 0.025em;
}

.hero-cities {
  margin: 0;
  font-family: var(--english);
  font-size: clamp(1rem, 1.7vw, 1.3rem);
  font-weight: 500;
  letter-spacing: 0.17em;
}

.hero-cta {
  margin-top: clamp(3rem, 6vh, 4.5rem);
  padding-bottom: 0.3rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--english);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.13em;
  text-decoration: none;
}

.section-heading > div > p {
  white-space: pre-line;
}

.itinerary-list {
  gap: clamp(6rem, 10vw, 9rem);
  margin-top: clamp(5rem, 8vw, 7rem);
}

.city-chapter {
  display: grid;
  grid-template-columns: minmax(12rem, 0.34fr) minmax(0, 1fr);
  gap: clamp(2.5rem, 6vw, 6rem);
  padding-top: clamp(2.4rem, 4vw, 3.5rem);
  border-top: 1px solid var(--line);
}

.city-chapter-header {
  position: sticky;
  top: 7rem;
  align-self: start;
}

.city-chapter-header p {
  margin: 0 0 1.15rem;
  color: var(--line);
  font-family: var(--english);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.19em;
}

.city-chapter-header h3 {
  margin: 0;
  font-family: var(--english);
  font-size: clamp(3.2rem, 5.5vw, 5.25rem);
  font-weight: 500;
  line-height: 0.95;
  letter-spacing: 0.04em;
}

html[lang="en"] .city-chapter-header h3,
html[lang="en"] .timeline-day-content h4,
html[lang="en"] .free-recommendations h4 {
  text-transform: uppercase;
}

.city-timeline {
  position: relative;
}

.city-timeline::before {
  position: absolute;
  top: 0.8rem;
  bottom: 0;
  left: 0.3rem;
  width: 1px;
  background: var(--line-soft);
  content: "";
}

.timeline-day {
  position: relative;
  display: grid;
  grid-template-columns: 0.65rem minmax(0, 1fr);
  gap: clamp(1.5rem, 3vw, 2.8rem);
}

.timeline-day + .timeline-day {
  margin-top: clamp(4rem, 7vw, 6rem);
}

.timeline-dot {
  z-index: 1;
  width: 0.65rem;
  height: 0.65rem;
  margin-top: 0.55rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--paper-light);
}

.timeline-date {
  margin: 0;
  color: var(--ink-soft);
  font-family: var(--english);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.17em;
}

.timeline-day-content h4 {
  margin: 1rem 0 0;
  font-family: var(--english);
  font-size: clamp(2rem, 3.3vw, 3rem);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: 0.04em;
}

.schedule-groups {
  display: grid;
  gap: 2rem;
  margin-top: 1.8rem;
}

.schedule-group {
  padding: 1.45rem 1.6rem;
  border-left: 1px solid var(--line);
}

.schedule-hosted {
  background: rgba(23, 51, 61, 0.045);
}

.schedule-label {
  display: flex;
  gap: 0.65rem;
  align-items: center;
  margin: 0 0 1rem;
  color: var(--ink);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.12em;
}

.schedule-label span {
  color: var(--line);
  font-family: var(--english);
  font-size: 1.1rem;
}

.schedule-group ul {
  display: grid;
  gap: 0.45rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.schedule-group li {
  display: grid;
  grid-template-columns: 4.5rem minmax(0, 1fr);
  gap: 1rem;
}

.schedule-group li.schedule-entry-untimed {
  grid-template-columns: minmax(0, 1fr);
}

.schedule-group time {
  color: var(--ink-soft);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
}

.free-travel-chapter {
  margin: 0;
  padding: clamp(2.5rem, 5vw, 4.5rem);
  border: 1px solid var(--line);
  color: var(--ink);
  background: rgba(251, 250, 247, 0.72);
}

.free-travel-chapter .city-chapter-header {
  position: static;
}

.free-travel-chapter .city-chapter-header p,
.free-travel-chapter .schedule-label,
.free-travel-chapter .schedule-label span {
  color: var(--line);
}

.free-travel-intro,
.free-travel-ending {
  max-width: 42rem;
  margin: 0;
  color: var(--ink-soft);
}

.free-recommendations {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 3rem 0;
  border: 1px solid var(--line-soft);
  background: var(--line-soft);
}

.free-recommendations article {
  padding: clamp(1.5rem, 3vw, 2.2rem);
  background: var(--paper-light);
}

.free-recommendations h4 {
  margin: 0 0 1rem;
  font-family: var(--english);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 500;
  letter-spacing: 0.04em;
}

.free-recommendations article > p:not(.schedule-label) {
  margin: 0.3rem 0 0;
  color: var(--ink-soft);
}

.free-travel-reunion {
  margin: 1.5rem 0 0;
  color: var(--line);
  font-family: var(--english);
  font-size: clamp(1.6rem, 2.8vw, 2.25rem);
  font-style: italic;
}

.survey-intro h2 {
  font-size: clamp(3.5rem, 6.5vw, 6.25rem);
  line-height: 0.96;
  letter-spacing: 0.025em;
}

.multiline-hint {
  white-space: pre-line;
}

.city-choice-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.city-choice-card {
  margin: 0;
  padding: 1.5rem;
  border: 1px solid var(--line-soft);
  background: rgba(247, 244, 239, 0.48);
}

.city-choice-card legend {
  width: auto;
  margin: 0 0 1.2rem;
  padding: 0 0.45rem;
  font-size: 1rem;
}

.city-choice-card legend strong,
.city-choice-card legend span {
  display: block;
}

.city-choice-card legend strong {
  font-family: var(--english);
  font-size: 1.65rem;
  font-weight: 500;
  line-height: 1.1;
}

.city-choice-card legend span {
  margin-top: 0.45rem;
  color: var(--ink-soft);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
}

.city-radio-options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.6rem;
}

.city-radio-options label,
.all-cities-choice,
.stay-options label {
  position: relative;
  display: flex;
  gap: 0.75rem;
  align-items: center;
  min-height: 3.4rem;
  padding: 0.8rem 0.9rem;
  border: 1px solid var(--line-soft);
  cursor: pointer;
}

.city-radio-options label:has(input:checked),
.all-cities-choice:has(input:checked),
.stay-options label:has(input:checked) {
  border-color: var(--ink);
  color: var(--paper-light);
  background: var(--ink);
}

.city-radio-options input,
.all-cities-choice input,
.stay-options input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.radio-mark,
.choice-box {
  width: 1rem;
  height: 1rem;
  flex: 0 0 auto;
  border: 1px solid currentColor;
}

.radio-mark {
  border-radius: 50%;
}

label:has(input:checked) .radio-mark {
  box-shadow: inset 0 0 0 0.25rem var(--ink), inset 0 0 0 0.5rem var(--paper-light);
}

label:has(input:checked) .choice-box {
  background: linear-gradient(135deg, transparent 44%, var(--paper-light) 45%, var(--paper-light) 57%, transparent 58%),
    linear-gradient(45deg, transparent 53%, var(--paper-light) 54%, var(--paper-light) 65%, transparent 66%);
}

.all-cities-choice {
  width: 100%;
  margin-top: 1rem;
  justify-content: center;
  min-height: 4rem;
}

.stay-columns > div {
  padding: clamp(1.35rem, 3vw, 2rem);
}

.stay-instruction {
  margin: 0 0 1.2rem;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.stay-options {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.65rem;
}

.stay-options label {
  min-height: 3.65rem;
}

.stay-options .no-stay-option {
  margin-top: 0.35rem;
  border-color: var(--line);
}

#summary-content {
  margin: 0;
}

#summary-content > div {
  display: grid;
  grid-template-columns: minmax(10rem, 0.38fr) minmax(0, 1fr);
  gap: 2rem;
  padding: 1.25rem 0;
  border-top: 1px solid var(--line-soft);
}

#summary-content dt {
  color: var(--ink-soft);
}

#summary-content dd {
  margin: 0;
}

html[lang="zh-CN"] .hero h1,
html[lang="zh-CN"] .hero-signature-subtitle,
html[lang="zh-CN"] .hero-dateline,
html[lang="zh-CN"] .hero-cities,
html[lang="zh-CN"] .hero-cta,
html[lang="zh-CN"] .city-chapter-header,
html[lang="zh-CN"] .timeline-date,
html[lang="zh-CN"] .timeline-day-content h4,
html[lang="zh-CN"] .free-recommendations h4,
html[lang="zh-CN"] .free-travel-reunion,
html[lang="zh-CN"] .city-choice-card legend strong {
  font-family: var(--chinese);
}

html[lang="zh-CN"] .hero h1 {
  font-size: clamp(4rem, 8vw, 7rem);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: 0.12em;
}

html[lang="zh-CN"] .hero-signature-subtitle {
  font-size: clamp(1.15rem, 2vw, 1.55rem);
  font-style: normal;
  letter-spacing: 0.08em;
}

html[lang="zh-CN"] .hero-dateline,
html[lang="zh-CN"] .hero-cities,
html[lang="zh-CN"] .hero-cta,
html[lang="zh-CN"] .city-chapter-header p,
html[lang="zh-CN"] .timeline-date {
  letter-spacing: 0.1em;
}

html[lang="zh-CN"] .city-chapter-header h3,
html[lang="zh-CN"] .timeline-day-content h4,
html[lang="zh-CN"] .free-recommendations h4,
html[lang="zh-CN"] .city-choice-card legend strong {
  font-weight: 500;
}

@media (max-width: 760px) {
  .hero {
    min-height: max(42rem, calc(100svh - 4rem));
    padding: 6rem 1.1rem 4.5rem;
  }

  .hero h1 {
    font-size: clamp(2.2rem, 9vw, 3.4rem);
    letter-spacing: -0.055em;
    white-space: nowrap;
  }

  html[lang="zh-CN"] .hero h1 {
    font-size: clamp(2.25rem, 9.5vw, 3.25rem);
    letter-spacing: 0.08em;
  }

  .hero-signature-subtitle {
    max-width: 21rem;
    margin-top: 1.8rem;
    font-size: 1.18rem;
  }

  html[lang="zh-CN"] .hero-signature-subtitle {
    max-width: 19rem;
    font-size: 1rem;
    line-height: 1.75;
  }

  .hero-dateline {
    margin-top: 2.6rem;
  }

  .hero-cities {
    max-width: 20rem;
    font-size: 0.9rem;
    line-height: 1.8;
  }

  .hero-cta {
    margin-top: 2.8rem;
    font-size: 0.9rem;
  }

  .survey-intro h2 {
    font-size: clamp(3rem, 15vw, 4.75rem);
  }

  html[lang="zh-CN"] .survey-intro h2 {
    font-size: clamp(2.25rem, 10vw, 3.25rem);
  }

  .itinerary-list {
    gap: 5.5rem;
    margin-top: 4.5rem;
  }

  .city-chapter {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .city-chapter-header {
    position: static;
  }

  .city-chapter-header h3 {
    font-size: clamp(3.25rem, 16vw, 4.75rem);
  }

  html[lang="zh-CN"] .city-chapter-header h3 {
    font-size: clamp(2.6rem, 13vw, 3.7rem);
  }

  .timeline-day + .timeline-day {
    margin-top: 4rem;
  }

  .timeline-day {
    gap: 1.15rem;
  }

  .schedule-group {
    padding: 1.25rem 1rem;
  }

  .schedule-group li {
    grid-template-columns: 3.8rem minmax(0, 1fr);
    gap: 0.65rem;
  }

  .free-travel-chapter {
    margin: 0;
    padding: 2.5rem 1.2rem;
  }

  .free-recommendations,
  .city-choice-list,
  .city-radio-options {
    grid-template-columns: 1fr;
  }

  .city-choice-card {
    padding: 1.25rem;
  }

  .city-choice-card legend {
    margin-bottom: 0.8rem;
  }

  .all-cities-choice {
    justify-content: flex-start;
  }

  #summary-content > div {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }
}

/* English uses one editorial family, with the signature reserved for the names. */
html[lang="en"] body,
html[lang="en"] button,
html[lang="en"] input,
html[lang="en"] select,
html[lang="en"] textarea,
html[lang="en"] .wordmark,
html[lang="en"] .section-nav,
html[lang="en"] .hero-signature-subtitle,
html[lang="en"] .hero-dateline,
html[lang="en"] .hero-cities,
html[lang="en"] .hero-cta,
html[lang="en"] .section-heading h2,
html[lang="en"] .city-chapter-header,
html[lang="en"] .timeline-day-content,
html[lang="en"] .free-travel-content,
html[lang="en"] .survey-shell,
html[lang="en"] footer {
  font-family: var(--english);
}

html[lang="en"] .hero h1 {
  font-family: var(--signature);
}

html[lang="en"] .hero-signature-subtitle,
html[lang="en"] .free-travel-reunion {
  font-style: normal;
}

html[lang="en"] .city-chapter-header,
html[lang="en"] .city-timeline,
html[lang="en"] .timeline-day-content,
html[lang="en"] .schedule-groups,
html[lang="en"] .schedule-group,
html[lang="en"] .schedule-group li,
html[lang="en"] .schedule-group li > span,
html[lang="en"] .free-travel-content,
html[lang="en"] .free-recommendations,
html[lang="en"] .free-recommendations article,
html[lang="en"] .city-choice-card,
html[lang="en"] .city-radio-options,
html[lang="en"] .city-radio-options label,
html[lang="en"] .stay-columns > div,
html[lang="en"] .stay-options label {
  min-width: 0;
  max-width: 100%;
}

html[lang="en"] .schedule-group li {
  grid-template-columns: 7.25rem minmax(0, 1fr);
  gap: 1rem;
}

html[lang="en"] .schedule-group li.schedule-entry-untimed {
  grid-template-columns: minmax(0, 1fr);
}

html[lang="en"] .schedule-group li > span,
html[lang="en"] .free-travel-intro,
html[lang="en"] .free-travel-ending,
html[lang="en"] .free-recommendations article > p,
html[lang="en"] .city-radio-options label > span:last-child,
html[lang="en"] .stay-options label > span:last-child,
html[lang="en"] .field-hint {
  overflow-wrap: break-word;
}

html[lang="en"] .free-travel-chapter .city-chapter-header h3 {
  max-width: 100%;
  font-size: clamp(2.75rem, 3.7vw, 3.5rem);
  line-height: 1;
  letter-spacing: 0.025em;
}

html[lang="en"] .free-travel-chapter {
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(2.5rem, 5vw, 4.5rem);
}

html[lang="en"] .free-travel-content,
html[lang="en"] .free-recommendations {
  width: 100%;
}

@media (max-width: 760px) {
  html[lang="en"] .section-heading h2,
  html[lang="en"] .survey-intro h2 {
    overflow-wrap: break-word;
  }

  html[lang="en"] .city-chapter-header h3 {
    max-width: 100%;
    font-size: clamp(2.85rem, 13vw, 4rem);
    line-height: 1;
    overflow-wrap: break-word;
  }

  html[lang="en"] .free-travel-chapter .city-chapter-header h3 {
    font-size: clamp(2.55rem, 11vw, 3.25rem);
  }

  html[lang="en"] .schedule-group li {
    grid-template-columns: 6.8rem minmax(0, 1fr);
    gap: 0.75rem;
  }
}

@media (max-width: 420px) {
  html[lang="en"] .schedule-group li {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.15rem;
  }

  html[lang="en"] .schedule-group time {
    margin-bottom: 0.1rem;
  }

  html[lang="en"] .free-recommendations h4 {
    font-size: clamp(1.6rem, 8vw, 2rem);
    overflow-wrap: break-word;
  }
}