:root {
  --ink: #24323d;
  --muted: #5b6b76;
  --line: #d8e1e5;
  --accent: #008080;
  --accent-dark: #0f5e63;
  --soft: #e9f6f5;
  --danger: #b42318;
  --danger-soft: #fff1f0;
  --warn-bg: #fff8e8;
  --warn-border: #e7c56b;
  --warn-text: #7a5a00;
  --shadow: 0 12px 28px rgba(21, 45, 54, 0.08);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

body {
  display: flex;
  flex-direction: column;
  margin: 0;
  min-height: 100vh;
  font-family: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(0, 128, 128, 0.08), transparent 28%),
    linear-gradient(180deg, #f8fbfc 0%, #eef3f5 100%);
  line-height: 1.7;
}

.shell {
  flex: 1 0 auto;
  width: min(1080px, 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,
.card {
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero {
  padding: 24px;
}

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

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

.hero p {
  margin: 0;
  max-width: 760px;
  color: var(--muted);
}

.layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 18px;
  margin-top: 18px;
}

.card {
  padding: 22px;
}

.section-title {
  margin: 0 0 18px;
  font-size: 1.12rem;
}

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

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 14px;
  min-width: 0;
}

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

label {
  font-size: 0.95rem;
  font-weight: 700;
}

.hint {
  margin: -2px 0 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.5;
}

input,
select {
  width: 100%;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid #c7d4d9;
  background: #fff;
  color: var(--ink);
  font: inherit;
}

input:focus,
select:focus {
  outline: 3px solid rgba(15, 118, 110, 0.15);
  border-color: var(--accent);
}

.field-error {
  min-height: 1.2em;
  color: var(--danger);
  font-size: 0.82rem;
  line-height: 1.5;
}

.field.invalid input,
.field.invalid select {
  border-color: var(--danger);
  background: var(--danger-soft);
}

.form-error {
  display: none;
  margin: 0 0 16px;
  padding: 12px 14px;
  border-radius: 16px;
  border: 1px solid #f3b3ad;
  background: var(--danger-soft);
  color: var(--danger);
  line-height: 1.6;
}

.form-error.visible {
  display: block;
}

button {
  appearance: none;
  width: 100%;
  padding: 15px 20px;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), #0b6770);
  color: #fff;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.result-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 92px;
  padding: 10px 14px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 0.9rem;
}

.score {
  margin: 14px 0;
  padding: 18px;
  background: #f8fbfc;
  border: 1px solid var(--line);
  border-radius: 18px;
}

.score strong {
  display: block;
  margin-bottom: 8px;
  font-size: 2.4rem;
  line-height: 1;
}

.meter {
  position: relative;
  width: 100%;
  height: 14px;
  overflow: hidden;
  border-radius: 999px;
  background: linear-gradient(90deg, #1d9f75 0%, #f4b400 55%, #cf3f3f 100%);
}

.meter::after {
  content: "";
  position: absolute;
  top: 50%;
  left: var(--meter-position, 0%);
  width: 18px;
  height: 18px;
  transform: translate(-50%, -50%);
  border: 3px solid var(--ink);
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.16);
}

.list {
  margin: 14px 0 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.7;
}

.summary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.mini {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #f9fbfc;
}

.mini span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.82rem;
}

.mini.warn {
  border-color: var(--warn-border);
  background: var(--warn-bg);
  color: var(--warn-text);
}

.mini.warn span,
.mini.warn strong {
  color: var(--warn-text);
}

.notice {
  margin-top: 18px;
  padding: 16px;
  border: 1px solid var(--warn-border);
  border-radius: 16px;
  background: var(--warn-bg);
  color: var(--warn-text);
  font-size: 0.92rem;
}

.low {
  background: #dff7ec;
  color: #166543;
}

.mid {
  background: #fff1cf;
  color: #8a5a00;
}

.high {
  background: #fde5e3;
  color: #9f1c1c;
}

.share-panel {
  margin-top: 20px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #f9fbfc;
}

.share-panel__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 16px;
}

.share-panel__header p {
  margin: 8px 0 0;
  color: var(--muted);
}

.share-chip {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--accent-dark);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.share-card-wrap {
  position: relative;
  overflow: hidden;
  min-height: 280px;
  padding: 22px;
  border-radius: 20px;
  background:
    radial-gradient(circle at top right, rgba(255, 255, 255, 0.22), transparent 28%),
    linear-gradient(135deg, #0f5e63 0%, #0f766e 52%, #20a39e 100%);
  color: #fff7ed;
}

.share-card-wrap::before,
.share-card-wrap::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  pointer-events: none;
}

.share-card-wrap::before {
  top: -110px;
  right: -70px;
  width: 240px;
  height: 240px;
}

.share-card-wrap::after {
  bottom: -90px;
  left: -40px;
  width: 180px;
  height: 180px;
}

.share-card-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.share-card-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.share-card-label {
  display: inline-flex;
  align-items: center;
  padding: 7px 12px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.14);
  font-size: 0.82rem;
  font-weight: 700;
}

.share-card-score {
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.share-card-title {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.share-card-subtitle {
  margin: 0;
  max-width: 34rem;
  color: rgba(255, 247, 237, 0.86);
  line-height: 1.7;
}

.share-amount {
  display: inline-flex;
  align-items: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}

.share-amount strong {
  font-size: clamp(2.4rem, 6vw, 4.6rem);
  line-height: 0.95;
  letter-spacing: -0.04em;
}

.share-amount span {
  padding-bottom: 8px;
  color: rgba(255, 247, 237, 0.82);
  font-size: 1rem;
  font-weight: 700;
}

.share-card-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.share-stat {
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 18px;
  background: rgba(17, 24, 39, 0.24);
  backdrop-filter: blur(4px);
}

.share-stat span {
  display: block;
  margin-bottom: 6px;
  color: rgba(255, 247, 237, 0.72);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.share-stat strong {
  font-size: 1.1rem;
  line-height: 1.3;
}

.share-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  color: rgba(255, 247, 237, 0.76);
  font-size: 0.82rem;
  font-weight: 700;
}

.share-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.share-actions button,
.share-actions a {
  width: auto;
  min-width: 160px;
  text-align: center;
  text-decoration: none;
  box-shadow: none;
}

.share-actions .share-secondary {
  border: 1px solid #c7d4d9;
  background: #fff;
  color: var(--accent-dark);
}

.share-copy-feedback {
  min-height: 1.4em;
  margin: 12px 0 0;
  color: var(--accent-dark);
  font-size: 0.88rem;
  font-weight: 700;
}

.share-canvas {
  display: none;
}

.site-footer {
  margin-top: auto;
  padding: 20px 16px 28px;
  border-top: 1px solid #d8e1e5;
  text-align: center;
  color: #718096;
  background: transparent;
}

.site-footer__disclaimer {
  margin: 0 auto 10px;
  max-width: 760px;
  font-size: 0.82rem;
  line-height: 1.7;
}

.site-footer__links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 0.84rem;
}

.site-footer__links span {
  color: #5b6b76;
  font-weight: 700;
}

.site-footer__links a {
  color: #008080;
  text-decoration: none;
}

.site-footer__links a:hover,
.site-footer__links a:focus-visible {
  color: #008080;
  text-decoration: underline;
}

@media (max-width: 820px) {
  .layout,
  .grid,
  .summary,
  .share-card-stats {
    grid-template-columns: 1fr;
  }

  .shell {
    width: min(100% - 14px, 1080px);
    padding-top: 16px;
  }

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

  .result-top {
    flex-direction: column;
  }

  .badge {
    min-width: 0;
  }

  form > button {
    position: sticky;
    bottom: 10px;
    z-index: 2;
  }

  .share-panel {
    padding: 16px;
  }

  .share-card-wrap {
    min-height: 0;
    padding: 18px;
  }

  .share-card-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .share-actions button,
  .share-actions a {
    width: 100%;
  }

  .site-footer {
    padding: 18px 14px 24px;
  }

  .site-footer__disclaimer {
    font-size: 0.78rem;
  }

  .site-footer__links {
    gap: 10px;
    font-size: 0.78rem;
  }
}

@media (max-width: 560px) {
  body {
    font-size: 15px;
  }

  .shell {
    width: min(100% - 14px, 1080px);
    padding: 12px 0 32px;
  }

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

  h1 {
    font-size: clamp(1.7rem, 9vw, 2.4rem);
  }

  input,
  select,
  button {
    font-size: 16px;
  }

  .score {
    padding: 16px;
  }

  .score strong {
    font-size: 2rem;
  }

  .share-panel {
    padding: 16px;
  }
}