:root {
  --ink: #271644;
  --ink-soft: #6b5d86;
  --paper: rgba(255, 255, 255, 0.84);
  --paper-strong: rgba(255, 255, 255, 0.92);
  --line: rgba(129, 108, 198, 0.2);
  --violet: #7362d9;
  --violet-deep: #3e276d;
  --blue: #8faeff;
  --gold: #f0cf84;
  --shadow: 0 24px 60px rgba(54, 37, 95, 0.2);
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Noto Serif SC', serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top right, rgba(255,255,255,0.7), transparent 22%),
    radial-gradient(circle at 15% 20%, rgba(163, 145, 255, 0.38), transparent 18%),
    linear-gradient(165deg, #40256e 0%, #998de8 44%, #f7f3ff 100%);
  overflow-x: hidden;
}

.poster-glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 80% 18%, rgba(255,255,255,0.3), transparent 18%),
    radial-gradient(circle at 20% 55%, rgba(255,255,255,0.2), transparent 20%),
    radial-gradient(circle at 75% 70%, rgba(255,212,130,0.18), transparent 18%);
  filter: blur(16px);
}

.poster-page {
  width: min(100%, 860px);
  margin: 0 auto;
  padding: 18px 14px 40px;
}

.poster-shell {
  position: relative;
  overflow: hidden;
  border-radius: 28px;
  border: 1px solid rgba(255,255,255,0.65);
  background: linear-gradient(180deg, rgba(255,255,255,0.22), rgba(255,255,255,0.08));
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.poster-stage {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(87, 53, 150, 0.45), rgba(255,255,255,0.05)),
    radial-gradient(circle at 75% 15%, rgba(255,255,255,0.35), transparent 14%),
    radial-gradient(circle at 20% 32%, rgba(255,255,255,0.18), transparent 22%),
    linear-gradient(135deg, rgba(255,255,255,0.06), transparent 45%);
}

.poster-head,
.poster-hero,
.poster-panel,
.form-card-poster {
  position: relative;
  z-index: 1;
}

.poster-head {
  display: flex;
  justify-content: flex-start;
  gap: 12px;
  align-items: center;
  padding: 16px 18px 0;
}

.poster-eyebrow {
  margin: 0;
  color: rgba(255,255,255,0.92);
  letter-spacing: 0.36em;
  font-size: 11px;
}

.poster-hero {
  padding: 18px 18px 10px;
  color: white;
  text-align: center;
}

.poster-kicker {
  margin: 0 0 10px;
  font-family: 'Ma Shan Zheng', cursive;
  font-size: 22px;
  color: #fff1c8;
}

h1 {
  margin: 0;
  font-size: clamp(30px, 6.4vw, 52px);
  line-height: 1.18;
  text-shadow: 0 8px 30px rgba(54, 31, 98, 0.35);
}

.poster-subtitle {
  margin: 12px auto 0;
  max-width: 580px;
  color: rgba(255,255,255,0.88);
  line-height: 1.8;
}

.poster-panel {
  padding: 12px 16px 6px;
  display: grid;
  gap: 14px;
}

.panel-block {
  padding: 18px 18px 16px;
  border-radius: 22px;
  background: rgba(255,255,255,0.72);
  border: 1px solid rgba(255,255,255,0.56);
}

.panel-block-soft {
  background: rgba(255,255,255,0.62);
}

.panel-block h2,
.panel-block h3 {
  margin: 0 0 10px;
  font-size: 22px;
}

.rich-list {
  margin: 0;
  padding-left: 22px;
  line-height: 1.82;
}

.footer-note {
  margin: 14px 0 0;
  line-height: 1.8;
  color: var(--ink-soft);
}

.form-card-poster {
  margin: 14px 16px 18px;
  padding: 18px 14px 20px;
  background: linear-gradient(180deg, rgba(255,255,255,0.92), rgba(248,245,255,0.92));
  border-radius: 24px;
  border: 1px solid rgba(255,255,255,0.85);
  box-shadow: 0 18px 50px rgba(65, 44, 114, 0.16);
}

.mobile-title {
  display: none;
  margin-bottom: 18px;
  padding: 14px 14px 12px;
  border-radius: 18px;
  background: rgba(126, 109, 218, 0.08);
  border: 1px solid rgba(126, 109, 218, 0.14);
}

.mobile-title p {
  margin: 0 0 8px;
  color: var(--violet);
  letter-spacing: 0.22em;
  font-size: 12px;
}

.mobile-title h2 {
  margin: 0;
  font-size: 26px;
}

.hero-insert {
  margin: 0 0 18px;
  border-radius: 20px;
  overflow: hidden;
  background: rgba(255,255,255,0.75);
  border: 1px solid rgba(126, 109, 218, 0.12);
  box-shadow: 0 12px 26px rgba(79, 60, 132, 0.12);
}

.hero-insert-image {
  display: block;
  width: 100%;
  height: auto;
}

.question-block {
  margin-bottom: 18px;
}

.question-label {
  display: block;
  margin-bottom: 10px;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.6;
}

.text-input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--paper-strong);
  padding: 15px 16px;
  font-size: 16px;
  color: var(--ink);
  outline: none;
}

.text-input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(143, 174, 255, 0.18);
}

.options {
  display: grid;
  gap: 10px;
}

.options.compact-two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.option-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 14px;
  border-radius: 16px;
  border: 1px solid rgba(115, 98, 217, 0.12);
  background: rgba(255,255,255,0.8);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.65;
  cursor: pointer;
}

.option-item input {
  width: 20px;
  height: 20px;
  accent-color: var(--violet);
  flex: none;
  margin-top: 2px;
}

.submit-btn {
  width: 100%;
  min-height: 54px;
  border: 0;
  border-radius: 18px;
  padding: 14px 16px;
  color: white;
  font-size: 19px;
  font-weight: 700;
  cursor: pointer;
  background: linear-gradient(135deg, #97b7ff 0%, #7f87f4 40%, #715bd4 100%);
  box-shadow: 0 18px 36px rgba(96, 92, 220, 0.28);
}

.message {
  min-height: 24px;
  margin: 12px 0 0;
  color: var(--violet);
  font-size: 15px;
}

.modal.hidden {
  display: none;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 14px;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(18, 12, 38, 0.62);
  backdrop-filter: blur(8px);
}

@keyframes modalFadeIn {
  from {
    opacity: 0;
    transform: translateY(14px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-card {
  position: relative;
  z-index: 1;
  width: min(92vw, 520px);
  margin: 0;
  background: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(245,241,255,0.96));
  border-radius: 28px;
  padding: 24px 18px 22px;
  box-shadow: 0 28px 80px rgba(28, 17, 60, 0.28);
  text-align: center;
  border: 1px solid rgba(125, 108, 255, 0.12);
  animation: modalFadeIn 0.24s ease-out;
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  border: 0;
  border-radius: 50%;
  background: rgba(118, 99, 215, 0.12);
  color: var(--violet);
  font-size: 24px;
  cursor: pointer;
}

.modal-kicker {
  margin: 4px 0 10px;
  color: var(--violet);
  letter-spacing: 0.24em;
  font-size: 12px;
}

.modal-card h2 {
  margin: 0 0 10px;
  font-size: 32px;
  color: var(--violet-deep);
}

.modal-text {
  margin: 0 0 16px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.modal-image-wrap {
  padding: 12px;
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(125, 108, 255, 0.08), rgba(143, 174, 255, 0.12));
  border: 1px solid rgba(125, 108, 255, 0.12);
}

.modal-code-image {
  display: block;
  width: min(100%, 420px);
  margin: 0 auto;
  border-radius: 20px;
  background: white;
}

.modal-note {
  margin: 14px 0 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

.modal-confirm {
  margin-top: 14px;
  width: 100%;
  min-height: 46px;
  border: 0;
  border-radius: 14px;
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  background: linear-gradient(135deg, #8ca9ff, #7c74ea 52%, #6652ce);
  box-shadow: 0 12px 24px rgba(103, 85, 188, 0.28);
}

@media (max-width: 768px) {
  .poster-page {
    padding: 10px 8px 20px;
  }

  .poster-shell {
    border-radius: 22px;
  }

  .poster-head {
    padding: 12px 12px 0;
  }

  .poster-hero {
    padding: 14px 12px 8px;
  }

  .poster-kicker {
    font-size: 20px;
  }

  h1 {
    font-size: 32px;
  }

  .poster-subtitle {
    font-size: 14px;
    line-height: 1.7;
  }

  .poster-panel {
    display: grid;
    padding: 8px 10px 4px;
    gap: 10px;
  }

  .panel-block {
    padding: 12px;
    border-radius: 16px;
  }

  .panel-block h2,
  .panel-block h3 {
    font-size: 18px;
  }

  .rich-list {
    line-height: 1.7;
    font-size: 14px;
    padding-left: 18px;
  }

  .footer-note {
    margin-top: 10px;
    font-size: 13px;
    line-height: 1.6;
  }

  .form-card-poster {
    margin: 10px;
    padding: 14px 12px 16px;
    border-radius: 20px;
  }

  .mobile-title {
    display: block;
  }

  .question-label {
    font-size: 17px;
  }

  .option-item {
    font-size: 15px;
    padding: 12px 12px;
  }

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

  .modal-card {
    width: min(94vw, 520px);
    padding: 20px 14px 18px;
    border-radius: 22px;
  }

  .modal-card h2 {
    font-size: 28px;
  }

  .modal-image-wrap {
    padding: 10px;
    border-radius: 20px;
  }
}

@media (max-width: 480px) {
  .poster-hero {
    padding-bottom: 4px;
  }

  h1 {
    font-size: 28px;
  }

  .poster-subtitle {
    display: none;
  }

  .poster-panel {
    padding-top: 6px;
  }

  .panel-block h2,
  .panel-block h3 {
    font-size: 17px;
  }

  .rich-list {
    font-size: 13px;
  }
}