*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --c-primary-50: #eef5ff;
  --c-primary-100: #d9e8ff;
  --c-primary-200: #bfd5ff;
  --c-primary-300: #8eb6ff;
  --c-primary-400: #5e92ff;
  --c-primary-500: #2f6cff;
  --c-primary-600: #214fdf;
  --c-primary-700: #1d3dad;
  --c-primary-900: #152449;

  --c-accent-50: #ecfdf5;
  --c-accent-100: #d1fae5;
  --c-accent-300: #6ee7b7;
  --c-accent-500: #10b981;
  --c-accent-600: #059669;
  --c-accent-700: #047857;

  --c-warm-400: #fb923c;
  --c-warm-500: #f97316;
  --c-warm-600: #ea580c;

  --c-gray-50: #f8fafc;
  --c-gray-100: #f1f5f9;
  --c-gray-200: #e2e8f0;
  --c-gray-300: #cbd5e1;
  --c-gray-400: #94a3b8;
  --c-gray-500: #64748b;
  --c-gray-600: #475569;
  --c-gray-700: #334155;
  --c-gray-800: #1e293b;
  --c-gray-900: #0f172a;

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --radius-pill: 999px;
  --shadow-sm: 0 4px 16px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 12px 40px rgba(15, 23, 42, 0.08);
  --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--c-gray-800);
  background:
    radial-gradient(circle at top left, rgba(47, 108, 255, 0.14), transparent 34%),
    linear-gradient(180deg, #f4f8ff 0%, #f8fafc 100%);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

[hidden] {
  display: none !important;
}

.sim-section {
  padding: 32px 16px 72px;
}

.sim-container {
  max-width: 680px;
  margin: 0 auto;
}

.hero-copy {
  margin-bottom: 18px;
  padding: 18px 4px 6px;
}

.hero-kicker,
.sim-block-kicker,
.preview-label {
  display: inline-block;
  margin: 0 0 8px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-primary-600);
}

.hero-copy h1 {
  margin: 0 0 10px;
  font-size: clamp(28px, 5vw, 38px);
  line-height: 1.2;
  color: var(--c-gray-900);
}

.hero-copy p {
  margin: 0;
  font-size: 15px;
  color: var(--c-gray-600);
}

.sim-block {
  position: relative;
  margin-bottom: 18px;
  padding: 28px 24px;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(191, 213, 255, 0.55);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition:
    max-height 0.55s cubic-bezier(0.4, 0, 0.2, 1),
    opacity 0.35s ease,
    margin 0.35s ease,
    padding 0.35s ease,
    transform 0.35s ease;
}

.sim-block.collapsed {
  max-height: 0 !important;
  opacity: 0;
  margin-bottom: 0;
  padding-top: 0;
  padding-bottom: 0;
  pointer-events: none;
  border-width: 0;
}

.sim-block.expanded {
  max-height: 5000px;
  opacity: 1;
}

#blockBasic {
  opacity: 1;
  max-height: none;
}

.sim-block-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.sim-block-title,
.result-title,
.preview-title {
  margin: 0;
  font-size: 24px;
  line-height: 1.25;
  color: var(--c-gray-900);
}

.sim-block-sub,
.preview-copy,
.result-subtitle {
  margin: 6px 0 0;
  font-size: 14px;
  color: var(--c-gray-500);
}

.field {
  margin-bottom: 22px;
}

.field:last-child {
  margin-bottom: 0;
}

.field-label {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
  font-size: 14px;
  font-weight: 700;
  color: var(--c-gray-700);
}

.field-required,
.field-badge {
  padding: 3px 10px;
  font-size: 11px;
  font-weight: 800;
  border-radius: var(--radius-pill);
}

.field-required {
  color: #b91c1c;
  background: #fee2e2;
}

.field-badge {
  color: var(--c-primary-600);
  background: var(--c-primary-50);
}

.field-hint,
.estimate-note {
  margin: 8px 0 0;
  font-size: 12px;
  color: var(--c-gray-500);
}

.input-text {
  width: 100%;
  padding: 15px 16px;
  border: 2px solid var(--c-gray-200);
  border-radius: var(--radius-md);
  background: var(--c-gray-50);
  font-family: var(--font);
  font-size: 16px;
  color: var(--c-gray-900);
  outline: none;
  transition: var(--transition);
}

.input-text:focus {
  border-color: var(--c-primary-400);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(47, 108, 255, 0.1);
}

.input-text::placeholder {
  color: var(--c-gray-400);
}

.input-postal {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.select-input {
  appearance: none;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--c-gray-500) 50%),
    linear-gradient(135deg, var(--c-gray-500) 50%, transparent 50%);
  background-position:
    calc(100% - 22px) calc(50% - 3px),
    calc(100% - 16px) calc(50% - 3px);
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
}

.input-unit {
  position: relative;
}

.input-unit .input-text {
  padding-right: 106px;
}

.input-unit-wide .input-text {
  padding-right: 112px;
}

.unit-label {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 13px;
  font-weight: 700;
  color: var(--c-gray-400);
  pointer-events: none;
}

.postal-feedback {
  min-height: 30px;
  margin-top: 10px;
}

.postal-feedback .loading,
.postal-feedback .success {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.postal-feedback .loading {
  font-size: 13px;
  color: var(--c-gray-400);
}

.postal-feedback .spinner {
  width: 14px;
  height: 14px;
  border: 2px solid var(--c-gray-200);
  border-top-color: var(--c-primary-500);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.postal-feedback .success {
  padding: 7px 14px;
  font-size: 14px;
  font-weight: 700;
  color: var(--c-accent-700);
  background: var(--c-accent-50);
  border-radius: var(--radius-pill);
}

.postal-feedback .error {
  font-size: 13px;
  color: #dc2626;
}

.choices {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

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

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

.choices-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.choices.compact.choices-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.choice {
  min-height: 60px;
  padding: 14px 12px;
  border: 2px solid var(--c-primary-500);
  border-radius: var(--radius-md);
  background: #fff;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 700;
  color: var(--c-gray-700);
  cursor: pointer;
  transition: var(--transition);
}

.choice:hover {
  border-color: var(--c-primary-300);
  transform: translateY(-1px);
}

.choice.choice-disabled,
.choice:disabled {
  color: var(--c-gray-400);
  border-color: var(--c-gray-200);
  background: #f3f4f6;
  cursor: not-allowed;
  opacity: 0.78;
}

.choice.choice-disabled:hover,
.choice:disabled:hover {
  border-color: var(--c-gray-200);
  transform: none;
}

.choice-soon {
  display: block;
  margin-top: 4px;
  font-size: 11px;
  font-weight: 800;
  color: var(--c-gray-400);
}

.choice.selected {
  color: var(--c-primary-700);
  border-color: var(--c-primary-500);
  background: linear-gradient(180deg, var(--c-primary-50) 0%, #eef4ff 100%);
  box-shadow: 0 0 0 4px rgba(47, 108, 255, 0.08);
}

.choices.multi .choice.selected {
  color: var(--c-accent-700);
  border-color: var(--c-accent-500);
  background: linear-gradient(180deg, var(--c-accent-50) 0%, #f3fff8 100%);
  box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.08);
}

.sim-preview {
  border-color: rgba(110, 231, 183, 0.58);
  background: linear-gradient(135deg, rgba(236, 253, 245, 0.96), rgba(255, 255, 255, 0.96));
}

.preview-glow {
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--c-accent-500), var(--c-primary-400), var(--c-accent-500));
  background-size: 200% 100%;
  animation: wave 4s ease-in-out infinite;
}

.preview-amount-box,
.result-total,
.contact-summary,
.estimate-card {
  border-radius: var(--radius-md);
}

.preview-amount-box {
  padding: 24px 18px;
  margin: 0 0 18px;
  text-align: center;
  border: 1px solid rgba(110, 231, 183, 0.65);
  background: rgba(255, 255, 255, 0.82);
}

.preview-amount-label,
.result-total-label,
.estimate-label {
  margin: 0 0 8px;
  font-size: 13px;
  font-weight: 700;
  color: var(--c-gray-600);
}

.preview-amount,
.result-total-amount,
.estimate-value {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
}

.preview-amount-val,
.total-value {
  font-size: clamp(44px, 9vw, 64px);
  font-weight: 800;
  line-height: 1;
  color: var(--c-gray-900);
}

.preview-amount-unit,
.total-suffix,
.total-prefix,
.estimate-value span:last-child {
  font-size: 20px;
  font-weight: 700;
  color: var(--c-gray-500);
}

.preview-amount-note {
  margin: 10px 0 0;
  font-size: 12px;
  color: var(--c-gray-500);
}

.preview-programs {
  display: flex;
  flex-direction: column;
  gap: 9px;
  margin-bottom: 18px;
}

.preview-program {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--c-gray-200);
}

.preview-program-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--c-gray-700);
}

.preview-program-badge,
.breakdown-badge {
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 800;
  border-radius: var(--radius-pill);
}

.badge-high {
  color: #166534;
  background: #dcfce7;
}

.badge-medium {
  color: #a16207;
  background: #fef3c7;
}

.badge-low {
  color: #b91c1c;
  background: #fee2e2;
}

.badge-check {
  color: var(--c-gray-600);
  background: var(--c-gray-100);
}

.preview-actions,
.result-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.btn,
.btn-diagnose,
.btn-reset,
.btn-cta,
.accordion-toggle {
  font-family: var(--font);
}

.btn,
.btn-diagnose,
.btn-reset {
  width: 100%;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn {
  min-height: 56px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 800;
}

.btn-primary,
.btn-diagnose {
  color: #fff;
  background: linear-gradient(135deg, var(--c-primary-500), var(--c-primary-600));
  box-shadow: 0 10px 24px rgba(47, 108, 255, 0.22);
}

.btn-primary:hover,
.btn-diagnose:hover {
  transform: translateY(-1px);
}

.btn-outline,
.btn-reset {
  color: var(--c-gray-700);
  background: #fff;
  border: 1px solid var(--c-gray-200);
}

.btn-outline:hover,
.btn-reset:hover {
  border-color: var(--c-primary-300);
  background: var(--c-primary-50);
}

.accordion-toggle {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 0;
  margin-bottom: 24px;
  background: transparent;
  border: none;
  color: inherit;
  cursor: pointer;
  text-align: left;
}

.accordion-toggle > span:first-child {
  display: block;
}

.accordion-title {
  display: block;
  margin: 0;
  font-size: 24px;
  line-height: 1.25;
  font-weight: 800;
  color: var(--c-gray-900);
}

.accordion-sub {
  display: block;
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-gray-500);
}

.accordion-chevron {
  margin-top: 10px;
  width: 14px;
  height: 14px;
  border-right: 2px solid var(--c-gray-400);
  border-bottom: 2px solid var(--c-gray-400);
  transform: rotate(45deg);
  transition: transform var(--transition);
  flex-shrink: 0;
}

.accordion-toggle.is-open .accordion-chevron {
  transform: rotate(-135deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.4s ease, opacity 0.3s ease, margin-top 0.3s ease;
}

.accordion-content.is-open {
  max-height: 2500px;
  opacity: 1;
  margin-top: 22px;
}

.estimate-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 14px;
}

.estimate-card {
  padding: 18px 16px;
  text-align: center;
  border: 1px solid rgba(191, 213, 255, 0.55);
  background: linear-gradient(180deg, #ffffff 0%, #f5f9ff 100%);
}

.estimate-value {
  margin: 0;
}

.estimate-value span:first-child {
  font-size: 34px;
  font-weight: 800;
  color: var(--c-primary-700);
  line-height: 1;
}

.btn-diagnose {
  margin-top: 4px;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 800;
}

.sim-result {
  border-color: rgba(191, 213, 255, 0.6);
}

.result-header {
  text-align: center;
  margin-bottom: 22px;
}

.result-total {
  padding: 28px 20px;
  margin-bottom: 20px;
  text-align: center;
  border: 1px solid rgba(191, 213, 255, 0.65);
  background: linear-gradient(135deg, #edf3ff, #ffffff);
}

.result-breakdown {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 18px;
}

.breakdown-card {
  padding: 18px;
  border-radius: var(--radius-md);
  border: 1px solid var(--c-gray-200);
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}

.breakdown-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.breakdown-name {
  font-size: 15px;
  font-weight: 800;
  color: var(--c-gray-900);
}

.breakdown-detail {
  margin: 0;
  font-size: 14px;
  color: var(--c-gray-600);
}

.breakdown-amount {
  margin: 10px 0 0;
  font-size: 18px;
  font-weight: 800;
  color: var(--c-primary-700);
}

.result-disclaimer {
  display: grid;
  gap: 6px;
  margin-bottom: 18px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: var(--c-gray-50);
  color: var(--c-gray-500);
  font-size: 12px;
}

.result-disclaimer p,
.contact-summary p,
.result-cta-note {
  margin: 0;
}

.sim-contact {
  border-color: rgba(251, 146, 60, 0.36);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 14px;
}

.field-span-2 {
  grid-column: span 2;
}

.contact-summary {
  margin: 4px 0 18px;
  padding: 16px 18px;
  background: linear-gradient(135deg, rgba(251, 146, 60, 0.08), rgba(47, 108, 255, 0.08));
  color: var(--c-gray-600);
  font-size: 13px;
}

.result-cta {
  text-align: center;
}

.result-cta-lead {
  margin: 0 0 14px;
  font-size: 14px;
  font-weight: 700;
  color: var(--c-gray-700);
}

.btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 62px;
  padding: 16px 18px;
  border: 0;
  border-radius: var(--radius-md);
  text-decoration: none;
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, var(--c-warm-500), var(--c-warm-600));
  box-shadow: 0 14px 28px rgba(249, 115, 22, 0.25);
  transition: var(--transition);
  cursor: pointer;
}

.btn-cta:hover {
  transform: translateY(-1px);
}

.btn-cta:disabled {
  cursor: not-allowed;
  opacity: .72;
  transform: none;
}

.contact-cta {
  margin-bottom: 16px;
}

.submit-status {
  min-height: 1.5em;
  margin: 12px 0 0;
  color: var(--c-gray-600);
  font-size: 13px;
  font-weight: 700;
  text-align: center;
}

.submit-status.is-success {
  color: #047857;
}

.submit-status.is-error {
  color: #dc2626;
}

.btn-reset {
  min-height: 54px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 800;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes wave {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

@media (max-width: 720px) {
  .sim-section {
    padding: 22px 12px 56px;
  }

  .sim-block {
    padding: 22px 18px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .preview-actions,
  .result-actions,
  .estimate-panel,
  .choices-2,
  .choices.compact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .choices,
  .choices-3,
  .choices.compact.choices-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .field-span-2 {
    grid-column: span 1;
  }

  .choice {
    min-height: 56px;
    padding: 12px 8px;
    border-radius: 16px;
    font-size: 13px;
  }

  .preview-amount-val,
  .total-value {
    font-size: 42px;
  }

  .input-postal {
    font-size: 18px;
  }

  .input-unit .input-text {
    padding-right: 94px;
  }

  .unit-label {
    font-size: 12px;
  }
}

@media (max-width: 420px) {
  .hero-copy h1 {
    font-size: 28px;
  }

  .sim-block-title,
  .result-title,
  .preview-title {
    font-size: 21px;
  }
}