:root {
  --bg: #f4f8f8;
  --panel: rgba(255, 255, 255, 0.96);
  --line: #d7e3e3;
  --line-strong: #b9caca;
  --text: #24323d;
  --muted: #5b6b76;
  --accent: #008080;
  --accent-dark: #0f5e63;
  --accent-soft: #e7f6f5;
  --error-bg: #fff1f1;
  --error-border: #e9b9b9;
  --error-text: #a13c3c;
  --shadow: 0 14px 32px rgba(21, 45, 54, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  color: var(--text);
  line-height: 1.7;
  background:
    radial-gradient(circle at top left, rgba(0, 128, 128, 0.08), transparent 28%),
    linear-gradient(180deg, #f8fbfc 0%, #eef4f4 100%);
}

button,
input {
  font: inherit;
}

.page {
  width: min(1120px, calc(100% - 24px));
  margin: 0 auto;
  padding: 20px 0 40px;
}

.back-link {
  display: inline-flex;
  margin-bottom: 16px;
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}

.back-link:hover,
.back-link:focus-visible {
  text-decoration: underline;
}

.hero,
.panel {
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.hero {
  padding: 26px;
}

.hero-badge {
  display: inline-flex;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.hero h1 {
  margin: 14px 0 10px;
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  line-height: 1.3;
}

.hero-text {
  margin: 0;
  max-width: 800px;
  color: var(--muted);
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.98fr);
  gap: 20px;
  margin-top: 20px;
  align-items: start;
}

.panel {
  padding: 22px;
}

.result-panel {
  position: sticky;
  top: 16px;
}

.panel-heading {
  margin-bottom: 18px;
}

.panel-heading h2,
.group h3,
.result-block-head h3,
.formula-card h4 {
  margin: 0;
}

.panel-heading p,
.field-hint,
.result-note,
.empty-state {
  margin: 0;
  color: var(--muted);
}

.group {
  margin-top: 22px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.group:first-of-type {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

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

.field label,
.option-title {
  font-weight: 700;
  font-size: 0.95rem;
}

.field input[type="date"],
.input-wrap {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: #fff;
}

.field input[type="date"] {
  padding: 14px 16px;
  color: var(--text);
}

.input-wrap {
  display: flex;
  align-items: center;
  padding-right: 14px;
}

.field input[type="date"]:focus,
.input-wrap:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 128, 128, 0.13);
  outline: 0;
}

.input-wrap input {
  width: 100%;
  padding: 14px 16px;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
}

.input-wrap span {
  color: var(--muted);
}

.option-block + .option-block {
  margin-top: 18px;
}

.radio-list {
  display: grid;
  gap: 12px;
  margin-top: 10px;
}

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

.choice-card {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 16px;
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  background: #fbfdfd;
  cursor: pointer;
}

.choice-card input {
  margin-top: 5px;
}

.choice-card span {
  font-weight: 700;
  line-height: 1.5;
}

.choice-card.is-selected {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.action-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 26px;
}

.sub-button,
.primary-button {
  appearance: none;
  min-height: 48px;
  border-radius: 999px;
  font-weight: 700;
  cursor: pointer;
}

.sub-button {
  border: 1px solid var(--line-strong);
  background: #fff;
  color: var(--text);
}

.sub-button:hover,
.sub-button:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
}

.primary-button {
  border: 0;
  background: linear-gradient(135deg, var(--accent), #0a6e6e);
  color: #fff;
}

.primary-button:hover,
.primary-button:focus-visible {
  opacity: 0.95;
}

.form-error {
  margin-bottom: 18px;
  padding: 14px 16px;
  border: 1px solid var(--error-border);
  border-radius: 16px;
  background: var(--error-bg);
  color: var(--error-text);
  font-weight: 700;
}

.empty-state {
  padding: 18px;
  border: 1px dashed var(--line-strong);
  border-radius: 18px;
  background: #fafdfd;
}

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

.summary-card {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fbfdfd;
}

.summary-card span {
  display: block;
  color: var(--muted);
  font-size: 0.9rem;
}

.summary-card strong {
  display: block;
  margin-top: 6px;
  font-size: 1.35rem;
  line-height: 1.35;
}

.summary-card-accent {
  background: linear-gradient(180deg, #eef8f8 0%, #f9fdfd 100%);
}

.summary-card-accent strong {
  color: var(--accent-dark);
  font-size: 1.55rem;
}

.result-block {
  margin-top: 16px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fbfdfd;
}

.result-block-head {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 12px;
}

.table-wrap {
  overflow-x: auto;
}

.result-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
}

.result-table th,
.result-table td {
  padding: 12px 10px;
  border-bottom: 1px solid #e5eeee;
  vertical-align: middle;
}

.result-table th {
  text-align: left;
  font-size: 0.92rem;
  color: var(--muted);
}

.number-cell {
  text-align: right;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.formula-list {
  display: grid;
  gap: 12px;
}

.formula-card {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
}

.formula-card p {
  margin: 0;
}

.formula-card p + p {
  margin-top: 6px;
}

.note-list {
  margin: 0;
  padding-left: 1.2rem;
}

.guide-block {
  border-style: dashed;
}

@media (max-width: 920px) {
  .layout,
  .field-grid,
  .compact-list,
  .summary-grid,
  .action-row {
    grid-template-columns: 1fr;
  }

  .result-panel {
    position: static;
  }
}

@media (max-width: 640px) {
  .page {
    width: min(100% - 14px, 1120px);
    padding: 14px 0 28px;
  }

  .hero,
  .panel {
    padding: 16px;
    border-radius: 18px;
  }

  .result-table {
    min-width: 560px;
  }

  .sub-button,
  .primary-button,
  .field input[type="date"],
  .input-wrap input {
    font-size: 16px;
  }
}

@media print {
  body {
    background: #fff;
  }

  .back-link,
  .input-panel {
    display: none !important;
  }

  .page {
    width: auto;
    padding: 0;
    margin: 0;
  }

  .layout {
    display: block;
    margin: 0;
  }

  .hero,
  .panel,
  .result-block,
  .summary-card {
    box-shadow: none;
    background: #fff;
  }

  .hero,
  .result-panel {
    border: 0;
    padding: 0;
  }

  .hero {
    margin-bottom: 14px;
  }

  .result-block,
  .summary-card {
    break-inside: avoid;
  }

  .empty-state {
    display: none;
  }
}