/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --red: #C41E3A;
  --red-dark: #A01830;
  --gold: #D4A853;
  --gold-light: #F5E6C8;
  --bg: #FFF8F0;
  --bg-alt: #FFFBF7;
  --text: #2D2D2D;
  --text-secondary: #666;
  --card-bg: #fff;
  --border: #E8D5C4;
  --shadow: 0 2px 12px rgba(0,0,0,0.06);
  --radius: 12px;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  max-width: 480px;
  margin: 0 auto;
  -webkit-font-smoothing: antialiased;
}

/* === Music Button === */
.music-btn {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 100;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 2px solid rgba(196, 30, 58, 0.3);
  background: rgba(255, 255, 255, 0.9);
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  transition: transform 0.3s;
}

.music-btn:active {
  transform: scale(0.9);
}

.music-btn.playing {
  border-color: var(--red);
  background: var(--red);
  animation: musicPulse 2s infinite;
}

@keyframes musicPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(196, 30, 58, 0.4); }
  50% { box-shadow: 0 0 0 12px rgba(196, 30, 58, 0); }
}

/* === Hero === */
.hero {
  text-align: center;
  padding: 48px 24px 32px;
  background: linear-gradient(180deg, #FFF1E6 0%, var(--bg) 100%);
}

.hero-badge {
  display: inline-block;
  background: var(--red);
  color: #fff;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 20px;
}

.hero-title {
  font-size: 28px;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 12px;
  letter-spacing: 1px;
}

.highlight {
  color: var(--red);
  position: relative;
}

.highlight::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0;
  right: 0;
  height: 8px;
  background: var(--gold-light);
  z-index: -1;
  border-radius: 4px;
}

.highlight-warn {
  color: #E67E22;
}

.hero-sub {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.hero-icons {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 32px;
}

.hero-icon-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  font-size: 28px;
}

.hero-icon-item span {
  font-size: 13px;
  color: var(--text-secondary);
}

.scroll-hint {
  font-size: 13px;
  color: #B0A090;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}

/* === Quotes === */
.quote {
  margin: 0 auto 24px;
  padding: 18px 20px;
  text-align: center;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.8;
  letter-spacing: 1px;
  border-radius: 10px;
}

.quote cite {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  font-weight: 400;
  font-style: normal;
  color: #999;
}

.quote-hero {
  max-width: 280px;
  color: var(--red);
  background: #FFF5F5;
  border: 1px solid #FDD;
  font-size: 16px;
}

.quote-warn {
  color: #C0392B;
  background: #FFF5F0;
  border: 1px solid #F0D0C0;
}

.quote-cta {
  color: #555;
  background: #FAFAF7;
  border: 1px solid #E8E0D5;
}

/* === Sections === */
.section {
  padding: 40px 24px;
}

.section-alt {
  background: var(--bg-alt);
}

.section-badge {
  display: inline-block;
  background: var(--red);
  color: #fff;
  width: 36px;
  height: 36px;
  line-height: 36px;
  text-align: center;
  border-radius: 50%;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 16px;
}

.badge-warn {
  background: #E67E22;
  font-size: 18px;
}

.section-title {
  font-size: 24px;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 24px;
}

/* === Reassure Box === */
.reassure-box {
  margin-top: 20px;
  padding: 18px 20px;
  background: #F0F7FF;
  border: 1px solid #C8DCF0;
  border-radius: var(--radius);
}

.reassure-icon {
  font-size: 22px;
  margin-bottom: 8px;
}

.reassure-box h4 {
  font-size: 16px;
  font-weight: 700;
  color: #2C5F8A;
  margin-bottom: 8px;
}

.reassure-box p {
  font-size: 14px;
  color: #4A6A85;
  line-height: 1.8;
}

.reassure-box strong {
  color: #2C5F8A;
}

/* === Section Desc === */
.section-desc {
  font-size: 15px;
  color: var(--text-secondary);
  margin-top: -16px;
  margin-bottom: 24px;
}

/* === Structure List === */
.structure-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.structure-item {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 16px 18px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.structure-icon {
  font-size: 32px;
  flex-shrink: 0;
}

.structure-info h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}

.structure-info p {
  font-size: 14px;
  color: var(--text-secondary);
}

/* === Cards === */
.card-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.card-icon {
  font-size: 32px;
  margin-bottom: 10px;
}

.card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--red);
}

.card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* === Feature List === */
.feature-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.feature-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.feature-num {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  line-height: 40px;
  text-align: center;
  background: var(--red);
  color: #fff;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 700;
}

.feature-content h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}

.feature-content p {
  font-size: 14px;
  color: var(--text-secondary);
}

/* === Risk Cards === */
.risk-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.risk-card {
  background: #FFF5F0;
  border: 1px solid #F0D0C0;
  border-radius: var(--radius);
  padding: 20px;
}

.risk-icon {
  font-size: 32px;
  margin-bottom: 10px;
}

.risk-card h4 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 6px;
  color: #C0392B;
}

.risk-card p {
  font-size: 14px;
  color: var(--text-secondary);
}

/* === Case List === */
.case-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.case-item {
  background: var(--card-bg);
  border-left: 4px solid var(--gold);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 16px 20px;
  box-shadow: var(--shadow);
}

.case-quote {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  margin-bottom: 8px;
}

.case-from {
  font-size: 13px;
  color: #999;
  text-align: right;
}

/* === CTA === */
.cta-desc {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 28px;
  line-height: 1.7;
}

/* === Group Info === */
.group-info {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 20px;
  padding: 16px 18px;
  background: #F0FFF4;
  border: 1px solid #B7E4C7;
  border-radius: var(--radius);
}

.group-info-icon {
  font-size: 24px;
  flex-shrink: 0;
}

.group-info p {
  font-size: 15px;
  color: #2D6A4F;
  line-height: 1.7;
  margin: 0;
}

.group-info strong {
  color: #1B4332;
}

/* === Form === */
.signup-form {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px 20px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  border: 1px solid var(--border);
}

.form-group {
  margin-bottom: 20px;
}

.form-group:last-of-type {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}

.required {
  color: var(--red);
}

.form-group input[type="text"],
.form-group input[type="tel"] {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #DDD0C0;
  border-radius: 8px;
  font-size: 16px;
  color: var(--text);
  background: #FAFAF7;
  transition: border-color 0.2s, box-shadow 0.2s;
  -webkit-appearance: none;
}

.form-group input:focus {
  outline: none;
  border-color: var(--red);
  box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.1);
}

.form-hint {
  display: block;
  font-size: 12px;
  color: #AAA;
  margin-top: 4px;
}

/* Address Row */
.address-row {
  display: flex;
  align-items: center;
  gap: 6px;
}

.address-row input {
  flex: 1;
  min-width: 0;
  padding: 12px 10px;
  border: 1px solid #DDD0C0;
  border-radius: 8px;
  font-size: 16px;
  color: var(--text);
  background: #FAFAF7;
  text-align: center;
  transition: border-color 0.2s;
  -webkit-appearance: none;
}

.address-row input:focus {
  outline: none;
  border-color: var(--red);
  box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.1);
}

.address-sep {
  font-size: 14px;
  color: #999;
  flex-shrink: 0;
}

.address-prefix {
  font-size: 16px;
  font-weight: 700;
  color: var(--red);
  flex-shrink: 0;
  padding: 12px 6px;
}

/* Radio Group */
.radio-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.radio-item {
  display: flex;
  align-items: center;
  padding: 12px 14px;
  border: 1px solid #DDD0C0;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  background: #FAFAF7;
}

.radio-item:has(input:checked) {
  border-color: var(--red);
  background: #FFF5F5;
}

.radio-item input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--red);
  margin-right: 10px;
  flex-shrink: 0;
}

.radio-label {
  font-size: 15px;
  color: var(--text);
}

/* Submit Button */
.submit-btn {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--red) 0%, var(--red-dark) 100%);
  color: #fff;
  border: none;
  border-radius: 10px;
  font-size: 18px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  letter-spacing: 2px;
}

.submit-btn:active {
  transform: scale(0.98);
  box-shadow: 0 2px 8px rgba(196, 30, 58, 0.3);
}

.submit-btn:disabled {
  background: #CCC;
  cursor: not-allowed;
}

/* Success / Error */
.form-success {
  text-align: center;
  padding: 32px 20px;
}

.success-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.form-success h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: #27AE60;
}

.form-success p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.form-error {
  margin-top: 16px;
  padding: 12px;
  background: #FFF0F0;
  border: 1px solid #F0C0C0;
  border-radius: 8px;
  text-align: center;
}

.form-error p {
  font-size: 14px;
  color: #C0392B;
}

/* === Footer === */
.footer {
  text-align: center;
  padding: 32px 24px 48px;
  color: #B0A090;
}

.footer p {
  font-size: 14px;
  margin-bottom: 6px;
}

.footer-note {
  font-size: 12px !important;
  color: #CCC;
}

/* === Responsive (larger screens) === */
@media (min-width: 481px) {
  body {
    border-left: 1px solid #F0E8DC;
    border-right: 1px solid #F0E8DC;
    min-height: 100vh;
  }

  .hero-title {
    font-size: 32px;
  }

  .section-title {
    font-size: 26px;
  }
}