:root {
  --accent: #008080;
  --accent-dark: #0f5e63;
  --accent-soft: #e7f5f5;
  --accent-line: #cfe3e3;
  --text: #24323d;
  --muted: #5b6b76;
  --line: #d8e1e5;
  --bg-top: #f8fbfc;
  --bg-bottom: #edf3f5;
  --card: rgba(255, 255, 255, 0.98);
  --warn: #9a6700;
  --warn-soft: #fff7e7;
  --warn-line: #efd089;
  --risk: #8f3f2f;
  --risk-soft: #fff4f1;
  --risk-line: #efc7bc;
  --shadow: 0 12px 28px rgba(21, 45, 54, 0.08);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
}

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

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

a {
  color: var(--accent);
}

.page-shell {
  width: min(1200px, calc(100% - 24px));
  margin: 0 auto;
  padding: 20px 0 40px;
}

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

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

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

.hero,
.sticky-bar,
.step-nav,
.input-panel,
.side-panel,
.preview-panel,
.output-panel,
.confirm-box {
  padding: 24px;
}

.hero {
  margin-bottom: 18px;
}

.eyebrow,
.mode-chip,
.mini-badge,
.warning-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 999px;
  font-weight: 700;
}

.eyebrow {
  padding: 6px 12px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: 0.82rem;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  margin-top: 14px;
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  line-height: 1.35;
}

h2 {
  font-size: 1.15rem;
}

h3 {
  font-size: 1rem;
}

.hero-text,
.section-head p,
.support-text,
.field-help,
.field-note,
.mode-description,
.mode-caption,
.output-note {
  color: var(--muted);
}

.hero-notes {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.note-card {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #f8fbfc;
}

.note-card-warning {
  border-color: var(--warn-line);
  background: var(--warn-soft);
  color: var(--warn);
}

.sticky-bar {
  position: sticky;
  top: 12px;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.mode-summary {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.mode-chip {
  padding: 7px 12px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: 0.88rem;
}

.privacy-banner {
  padding: 7px 12px;
  border-radius: 12px;
  border: 1px solid var(--warn-line);
  background: var(--warn-soft);
  color: var(--warn);
  font-size: 0.88rem;
  font-weight: 700;
}

.step-nav {
  margin-bottom: 18px;
}

.step-list {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 10px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.step-item {
  padding: 12px 10px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #f8fbfc;
  text-align: center;
  font-size: 0.88rem;
}

.step-item.is-active {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-weight: 700;
}

.step-item.is-done {
  border-color: #c5dbdb;
  background: #f4fbfb;
}

.view-stack {
  display: grid;
  gap: 18px;
}

.view-panel {
  display: grid;
  gap: 18px;
}

.mode-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.mode-card {
  display: grid;
  gap: 14px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  text-align: left;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.mode-card:hover,
.mode-card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: 0 10px 22px rgba(0, 128, 128, 0.08);
}

.mode-card strong {
  font-size: 1.08rem;
}

.mode-points {
  display: grid;
  gap: 8px;
  padding-left: 18px;
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.form-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 18px;
}

.section-head {
  display: grid;
  gap: 6px;
}

.inline-message {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: 14px;
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  color: var(--accent-dark);
  font-size: 0.94rem;
}

.inline-message-soft {
  background: #f8fbfc;
  border-color: var(--line);
  color: var(--muted);
}

.section-jump {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.jump-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.9rem;
}

.jump-link:hover,
.jump-link:focus-visible {
  border-color: var(--accent);
  color: var(--accent-dark);
}

.form-section {
  margin-top: 20px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fbfdfd;
}

.form-section-header {
  display: grid;
  gap: 6px;
  margin-bottom: 16px;
}

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

.field {
  display: grid;
  gap: 8px;
}

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

.field label {
  font-weight: 700;
  font-size: 0.96rem;
}

.label-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 50px;
  padding: 12px 14px;
  border: 1px solid #c7d4d9;
  border-radius: 14px;
  background: #fff;
  color: var(--text);
}

.field textarea {
  min-height: 118px;
  resize: vertical;
}

.field input:focus,
.field select:focus,
.field textarea:focus,
.mode-card:focus-visible,
.primary-button:focus-visible,
.secondary-button:focus-visible,
.ghost-button:focus-visible,
.jump-link:focus-visible {
  outline: 3px solid rgba(0, 128, 128, 0.15);
  outline-offset: 1px;
  border-color: var(--accent);
}

.field-help {
  font-size: 0.84rem;
}

.field-note {
  font-size: 0.78rem;
}

.mini-badge {
  padding: 4px 8px;
  background: #f1f6f6;
  color: var(--accent-dark);
  font-size: 0.76rem;
}

.warning-badge {
  padding: 4px 8px;
  background: var(--risk-soft);
  border: 1px solid var(--risk-line);
  color: var(--risk);
  font-size: 0.76rem;
}

.action-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 22px;
}

.action-row-sticky {
  position: sticky;
  bottom: 10px;
  padding-top: 12px;
  background: linear-gradient(180deg, rgba(251, 253, 253, 0.2), rgba(251, 253, 253, 0.95));
}

.primary-button,
.secondary-button,
.ghost-button {
  appearance: none;
  min-height: 48px;
  padding: 12px 18px;
  border-radius: 14px;
  border: 1px solid transparent;
  font-weight: 700;
  transition: transform 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
}

.primary-button {
  background: linear-gradient(135deg, var(--accent), #0b6770);
  color: #fff;
}

.secondary-button {
  background: #f2f8f8;
  border-color: #d4e2e2;
  color: var(--accent-dark);
}

.ghost-button {
  background: #fff;
  border-color: var(--line);
  color: var(--text);
}

.primary-button:hover,
.secondary-button:hover,
.ghost-button:hover {
  transform: translateY(-1px);
}

.side-panel {
  align-self: start;
  position: sticky;
  top: 168px;
}

.support-block + .support-block {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.status-list {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 14px 0 0;
  list-style: none;
}

.status-item {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: #f9fbfc;
  font-size: 0.92rem;
}

.status-item strong {
  color: var(--accent-dark);
}

.status-item.is-risk {
  border-color: var(--risk-line);
  background: var(--risk-soft);
}

.status-item.is-warn {
  border-color: var(--warn-line);
  background: var(--warn-soft);
}

.status-bullet {
  flex: 0 0 auto;
  width: 1.45rem;
  height: 1.45rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: #e6eff0;
  color: var(--accent-dark);
  font-size: 0.82rem;
  font-weight: 700;
}

.preview-summary {
  display: grid;
  gap: 16px;
  margin-top: 18px;
}

.preview-card {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
}

.preview-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 18px;
  margin-top: 14px;
}

.preview-item {
  display: grid;
  gap: 4px;
  padding-bottom: 10px;
  border-bottom: 1px solid #edf2f4;
}

.preview-item-label {
  color: var(--muted);
  font-size: 0.84rem;
}

.preview-item-value {
  font-weight: 700;
  word-break: break-word;
}

.preview-item-value.is-empty {
  color: var(--muted);
  font-weight: 400;
}

.preview-item-risk {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 4px;
  color: var(--risk);
  font-size: 0.8rem;
  font-weight: 700;
}

.confirm-box {
  margin-top: 18px;
}

.output-status {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.output-card {
  padding: 16px;
  border-radius: 16px;
  border: 1px solid var(--accent-line);
  background: #f4fbfb;
}

.download-list {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.download-item {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: #fff;
}

.download-item span {
  display: block;
  color: var(--muted);
  font-size: 0.88rem;
}

.download-link {
  font-weight: 700;
  text-decoration: none;
}

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

.page-footer {
  padding: 20px 0 10px;
  text-align: center;
}

.footer-link {
  margin-bottom: 0;
}

@media (max-width: 1080px) {
  .form-layout {
    grid-template-columns: 1fr;
  }

  .side-panel {
    position: static;
  }
}

@media (max-width: 820px) {
  .mode-grid,
  .step-list,
  .preview-grid,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .sticky-bar {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 640px) {
  .page-shell {
    width: min(100% - 14px, 1200px);
    padding: 14px 0 28px;
  }

  .hero,
  .sticky-bar,
  .step-nav,
  .input-panel,
  .side-panel,
  .preview-panel,
  .output-panel,
  .confirm-box {
    padding: 18px;
  }

  .form-section {
    padding: 16px;
  }

  .mode-card {
    padding: 18px;
  }

  .action-row {
    flex-direction: column;
  }

  .primary-button,
  .secondary-button,
  .ghost-button,
  .field input,
  .field select,
  .field textarea {
    font-size: 16px;
  }
}