:root {
  --amber: #c89839;
  --cacao: #7b533b;
  --pumpkin: #ab5e16;
  --moss: #5b643e;
  --rosehip: #792318;
  --lagoon: #314350;
  --cream: #f4ead6;
  --paper: #fffaf0;
  --ink: var(--lagoon);
  --muted: #735f50;
  --berry: var(--pumpkin);
  --berry-dark: var(--rosehip);
  --sage: #c7c6a4;
  --line: rgba(123, 83, 59, 0.2);
  --shadow: 0 24px 70px rgba(83, 57, 40, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--cream);
  font-family: "Noto Sans TC", sans-serif;
  line-height: 1.7;
  overflow-x: hidden;
}

button,
input,
textarea {
  font: inherit;
}

a {
  color: inherit;
}

.page-glow {
  position: fixed;
  z-index: -1;
  width: 560px;
  height: 560px;
  border-radius: 50%;
  filter: blur(1px);
  opacity: 0.5;
  pointer-events: none;
}

.page-glow--one {
  top: -260px;
  right: -120px;
  background: radial-gradient(circle, rgba(200, 152, 57, 0.32), transparent 68%);
}

.page-glow--two {
  top: 520px;
  left: -360px;
  background: radial-gradient(circle, rgba(91, 100, 62, 0.24), transparent 68%);
}

.hero,
.form-shell,
footer {
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
}

.hero {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: clamp(36px, 6vw, 80px);
  align-items: end;
  padding: 54px 0 64px;
}

.hero__contact {
  display: grid;
  gap: 12px;
}

.hero__intro-wrap {
  display: flex;
  max-width: 680px;
  gap: 18px;
  align-items: center;
}

.hero__portrait {
  width: 70px;
  height: 70px;
  flex: 0 0 auto;
  object-fit: cover;
  object-position: 50% 35%;
  border: 3px solid rgba(255, 250, 240, 0.8);
  border-radius: 50%;
  box-shadow: 0 8px 24px rgba(83, 57, 40, 0.15);
}

.eyebrow,
.section-heading p {
  margin: 0;
  color: var(--pumpkin);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
}

.hero h1 {
  margin: 14px 0 22px;
  font-family: "Noto Serif TC", serif;
  font-size: clamp(44px, 6vw, 76px);
  line-height: 1.25;
  letter-spacing: -0.04em;
}

.hero h1 em {
  color: var(--rosehip);
  font-style: normal;
}

.hero__intro {
  max-width: 650px;
  margin: 0;
  color: var(--cacao);
  font-size: 18px;
}

.hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.hero__tags span,
.hero__tags a {
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: 100px;
  color: var(--cacao);
  background: rgba(255, 250, 240, 0.4);
  font-size: 12px;
  text-decoration: none;
}

.hero__tags a {
  color: var(--rosehip);
  border-color: rgba(121, 35, 24, 0.3);
  font-weight: 600;
}

.hero__tags a:hover {
  color: var(--paper);
  background: var(--rosehip);
}

.hero__tags .hero__social {
  color: var(--lagoon);
  border-color: rgba(49, 67, 80, 0.28);
}

.hero__tags .hero__social:hover {
  color: var(--paper);
  background: var(--lagoon);
}

.hero__note {
  position: relative;
  padding: 28px;
  overflow: hidden;
  color: var(--paper);
  background: var(--lagoon);
  border-radius: 2px 42px 2px 2px;
  box-shadow: var(--shadow);
}

.hero__note-number {
  position: absolute;
  top: -28px;
  right: 8px;
  color: rgba(255, 255, 255, 0.07);
  font-family: "Noto Serif TC", serif;
  font-size: 120px;
}

.hero__note p {
  position: relative;
  margin: 0 0 5px;
  color: rgba(255, 255, 255, 0.66);
  font-size: 13px;
}

.hero__note strong {
  position: relative;
  font-family: "Noto Serif TC", serif;
  font-size: 28px;
}

.hero__note hr {
  margin: 18px 0;
  border: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.17);
}

.hero__note a {
  display: inline-block;
  margin-top: 12px;
  color: #f0c76f;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
}

.form-shell {
  margin-bottom: 48px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.progress-wrap {
  position: sticky;
  z-index: 5;
  top: 0;
  padding: 13px 38px 11px;
  background: rgba(255, 250, 240, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.progress-copy {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.1em;
}

.progress-copy strong {
  color: var(--pumpkin);
}

.progress-track {
  height: 3px;
  overflow: hidden;
  background: #e7dcc5;
}

.progress-track span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--amber), var(--pumpkin));
  transition: width 0.3s ease;
}

.form-section {
  display: grid;
  grid-template-columns: 210px 1fr;
  gap: 34px;
  padding: 48px 52px;
  border-bottom: 1px solid var(--line);
}

.section-heading {
  display: flex;
  gap: 13px;
  align-items: flex-start;
}

.section-heading > span {
  display: grid;
  width: 35px;
  height: 35px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--rosehip);
  background: rgba(200, 152, 57, 0.1);
  font-size: 11px;
}

.section-heading h2 {
  margin: 3px 0 0;
  font-family: "Noto Serif TC", serif;
  font-size: 21px;
  line-height: 1.4;
}

.field-grid,
.date-pair,
.choice-group,
.invitation-type-group,
.topic-group,
.form-section > .field,
.submit-area {
  grid-column: 2;
}

.invitation-type-group {
  min-width: 0;
  margin: 0 0 24px;
  padding: 0;
  border: 0;
}

.invitation-type-group legend {
  margin-bottom: 10px;
  color: var(--cacao);
  font-size: 14px;
  font-weight: 600;
}

.invitation-type-group legend b {
  color: var(--rosehip);
}

.invitation-type-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
}

.field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 20px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field--wide {
  grid-column: 1 / -1;
}

.topic-group {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.topic-group legend {
  display: flex;
  gap: 5px;
  flex-direction: column;
  margin-bottom: 16px;
}

.topic-group legend > span {
  color: var(--cacao);
  font-size: 14px;
  font-weight: 600;
}

.topic-group legend b {
  color: var(--rosehip);
}

.topic-group legend small {
  color: var(--muted);
  font-size: 11px;
  font-weight: 400;
}

.topic-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.topic-card {
  position: relative;
  cursor: pointer;
}

.topic-card input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.topic-card > span {
  display: grid;
  min-height: 170px;
  align-content: start;
  padding: 18px;
  background: rgba(200, 152, 57, 0.07);
  border: 1px solid var(--line);
  transition: 0.2s ease;
}

.topic-card i {
  margin-bottom: 15px;
  color: var(--pumpkin);
  font-size: 10px;
  font-style: normal;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.topic-card strong {
  color: var(--lagoon);
  font-family: "Noto Serif TC", serif;
  font-size: 17px;
}

.topic-card small {
  margin-top: 9px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.75;
}

.topic-card:hover > span {
  border-color: var(--amber);
  transform: translateY(-2px);
}

.topic-card input:checked + span {
  background: var(--lagoon);
  border-color: var(--lagoon);
  box-shadow: 0 12px 28px rgba(49, 67, 80, 0.16);
  transform: translateY(-2px);
}

.topic-card input:checked + span i {
  color: var(--amber);
}

.topic-card input:checked + span strong {
  color: var(--paper);
}

.topic-card input:checked + span small {
  color: rgba(255, 250, 240, 0.72);
}

.topic-card input:focus-visible + span {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.topic-card--custom {
  grid-column: 1 / -1;
}

.topic-card--custom > span {
  min-height: 0;
  grid-template-columns: 35px 180px 1fr;
  gap: 12px;
  align-items: center;
}

.topic-card--custom i,
.topic-card--custom small {
  margin: 0;
}

.topic-expectation {
  margin-top: 20px;
}

.field > span,
.choice-group legend {
  color: var(--cacao);
  font-size: 14px;
  font-weight: 600;
}

.field b,
.choice-group b {
  color: var(--rosehip);
}

.field small,
.choice-group small {
  margin-left: 5px;
  color: #8a9793;
  font-size: 10px;
  font-weight: 400;
}

.field input,
.field textarea {
  width: 100%;
  padding: 13px 2px;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-bottom: 1px solid rgba(123, 83, 59, 0.42);
  border-radius: 0;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  font-size: 15px;
}

.field textarea {
  padding: 14px;
  border: 1px solid rgba(123, 83, 59, 0.42);
  resize: vertical;
}

.field input::placeholder,
.field textarea::placeholder {
  color: #aa9989;
}

.field input:focus,
.field textarea:focus {
  border-color: var(--pumpkin);
  box-shadow: 0 2px 0 rgba(171, 94, 22, 0.14);
}

.date-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 24px;
}

.date-card {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 20px;
  background: rgba(200, 152, 57, 0.13);
  border: 0;
}

.date-card--alt {
  background: rgba(91, 100, 62, 0.12);
}

.date-card legend {
  padding: 0 8px;
  font-family: "Noto Serif TC", serif;
  font-weight: 700;
}

.date-card legend span {
  margin-right: 5px;
  color: var(--pumpkin);
  font-family: "Noto Sans TC", sans-serif;
  font-size: 10px;
  letter-spacing: 0.12em;
}

.choice-group {
  min-width: 0;
  margin-top: 24px;
  padding: 0;
  border: 0;
}

.choice-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-top: 10px;
}

.choice {
  position: relative;
  cursor: pointer;
}

.choice input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.choice span {
  display: grid;
  min-height: 54px;
  place-items: center;
  padding: 10px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  text-align: center;
  transition: 0.2s ease;
}

.choice input:checked + span {
  color: var(--paper);
  background: var(--moss);
  border-color: var(--moss);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(91, 100, 62, 0.2);
}

.choice input:focus-visible + span {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.choice-grid--sources {
  grid-template-columns: repeat(3, 1fr);
}

.other-field {
  max-width: 440px;
  margin-top: 18px;
}

.field-error {
  display: none;
  margin: 9px 0 0;
  color: var(--rosehip);
  font-size: 12px;
}

.choice-group.has-error .field-error {
  display: block;
}

.submit-area {
  display: flex;
  gap: 30px;
  align-items: center;
  justify-content: space-between;
  margin-top: 30px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.submit-area p {
  margin: 0 0 3px;
  color: var(--muted);
  font-size: 12px;
}

.submit-area small {
  color: #89928e;
  font-size: 10px;
}

.submit-button {
  display: flex;
  min-width: 220px;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  color: white;
  background: var(--pumpkin);
  border: 0;
  cursor: pointer;
  font-weight: 600;
  transition: 0.2s ease;
}

.submit-button:hover {
  background: var(--rosehip);
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(121, 35, 24, 0.24);
}

.submit-button:disabled {
  cursor: wait;
  opacity: 0.65;
}

.success {
  padding: 110px 32px;
  text-align: center;
}

.success__mark {
  display: grid;
  width: 74px;
  height: 74px;
  margin: 0 auto 25px;
  place-items: center;
  color: white;
  background: var(--moss);
  border-radius: 50%;
  font-size: 28px;
}

.success h2 {
  margin: 10px 0 17px;
  font-family: "Noto Serif TC", serif;
  font-size: 42px;
}

.success p {
  color: var(--muted);
}

.success__email {
  display: inline-block;
  margin-top: 12px;
  color: var(--pumpkin);
  font-weight: 600;
}

.social-links {
  display: grid;
  max-width: 620px;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 30px auto 0;
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 17px;
  color: var(--paper);
  background: var(--lagoon);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: 0.2s ease;
}

.social-links a:nth-child(2) {
  background: var(--rosehip);
}

.social-links a:nth-child(3) {
  background: var(--moss);
}

.social-links a:hover {
  background: var(--pumpkin);
  transform: translateY(-2px);
}

footer {
  display: flex;
  justify-content: space-between;
  padding: 0 0 28px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.04em;
}

footer span {
  margin: 0 7px;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 38px 0 50px;
  }

  .hero__note {
    max-width: 420px;
  }

  .hero__contact {
    max-width: 420px;
  }

  .form-section {
    grid-template-columns: 1fr;
    gap: 26px;
    padding: 42px 36px;
  }

  .field-grid,
  .date-pair,
  .choice-group,
  .invitation-type-group,
  .topic-group,
  .form-section > .field,
  .submit-area {
    grid-column: 1;
  }
}

@media (max-width: 640px) {
  .hero,
  .form-shell,
  footer {
    width: min(100% - 28px, 1180px);
  }

  .hero {
    padding: 30px 0 40px;
  }

  .hero h1 {
    font-size: 40px;
  }

  .hero__intro {
    font-size: 15px;
  }

  .hero__intro-wrap {
    gap: 13px;
    align-items: flex-start;
  }

  .hero__portrait {
    width: 58px;
    height: 58px;
  }

  .hero__note {
    max-width: none;
  }

  .progress-wrap {
    padding-inline: 22px;
  }

  .form-section {
    padding: 36px 22px;
  }

  .field-grid,
  .date-pair,
  .topic-grid {
    grid-template-columns: 1fr;
  }

  .topic-card--custom {
    grid-column: auto;
  }

  .topic-card--custom > span {
    min-height: 160px;
    grid-template-columns: 1fr;
    gap: 0;
  }

  .topic-card--custom i {
    margin-bottom: 15px;
  }

  .choice-grid,
  .choice-grid--sources {
    grid-template-columns: 1fr 1fr;
  }

  .invitation-type-grid {
    grid-template-columns: 1fr 1fr;
  }

  .submit-area {
    align-items: stretch;
    flex-direction: column;
  }

  .submit-button {
    width: 100%;
  }

  .social-links {
    grid-template-columns: 1fr;
  }

  footer {
    gap: 8px;
    flex-direction: column;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}