:root {
  --bg: #f7fafc;
  --surface: #ffffff;
  --ink: #17242d;
  --muted: #6d7c87;
  --line: #dbe5ea;
  --primary: #1fb7b0;
  --primary-dark: #168c87;
  --accent: #8bc34a;
  --shadow: 0 20px 60px rgba(45,72,86,.10);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 8%, rgba(31,183,176,.10), transparent 30%),
    radial-gradient(circle at 90% 14%, rgba(139,195,74,.08), transparent 28%),
    linear-gradient(180deg, #fbfdfe 0%, var(--bg) 100%);
  font-family: YakuHanJP, Inter, "Helvetica Neue", Arial, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", Meiryo, sans-serif;
}

button, input, textarea { font: inherit; }
button { cursor: pointer; }

.app-header,
.app-footer,
main {
  width: min(1220px, calc(100% - 40px));
  margin: 0 auto;
}

.app-header {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 800;
}

.brand-mark {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  color: white;
  background: linear-gradient(135deg, var(--primary), #53d8d1);
  font-size: 11px;
}

.header-meta {
  display: flex;
  gap: 22px;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: .14em;
}

.view { min-height: calc(100vh - 156px); }

.intro-view {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 64px;
  align-items: center;
  padding: 72px 0 68px;
}

.eyebrow,
.card-label {
  margin: 0 0 18px;
  color: var(--primary);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .18em;
}

.intro-copy h1,
.form-header h2,
.result-hero h2 {
  margin: 0;
  font-size: clamp(52px, 6.2vw, 86px);
  line-height: 1.08;
  letter-spacing: -.055em;
  font-weight: 800;
  overflow-wrap: anywhere;
}

.intro-copy h1 span { color: var(--primary); }

.lead,
.result-summary,
.section-heading p,
.form-header p {
  color: var(--muted);
  line-height: 1.9;
}

.lead {
  max-width: 660px;
  margin: 28px 0 0;
  font-size: 17px;
}

.intro-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-top: 34px;
}

.intro-actions p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.button {
  border: 0;
  border-radius: 12px;
  padding: 15px 20px;
  font-weight: 800;
  transition: transform .18s ease, box-shadow .18s ease;
}

.button:hover { transform: translateY(-2px); }

.button-primary {
  min-width: 200px;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  color: white;
  background: linear-gradient(135deg, var(--primary), #39cfc7);
  box-shadow: 0 12px 32px rgba(31,183,176,.22);
}

.button-secondary {
  color: white;
  background: var(--ink);
}

.benefit-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 50px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: rgba(255,255,255,.72);
}

.benefit-row div {
  padding: 18px;
  border-right: 1px solid var(--line);
}

.benefit-row div:last-child { border-right: 0; }

.benefit-row strong {
  display: block;
  margin-bottom: 8px;
  color: var(--primary);
  font-size: 11px;
}

.benefit-row span {
  font-size: 13px;
  font-weight: 700;
}

.blog-card-visual {
  width: min(100%, 500px);
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,.82);
  box-shadow: var(--shadow);
}

.visual-label {
  color: var(--muted);
  font-size: 10px;
  letter-spacing: .16em;
}

.section-stack {
  display: grid;
  gap: 12px;
  margin: 26px 0;
}

.section-step {
  display: grid;
  grid-template-columns: 42px 1fr;
  align-items: center;
  gap: 14px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: white;
}

.section-step.active {
  border-color: rgba(31,183,176,.35);
  background: #eefafa;
}

.section-step span {
  color: var(--primary);
  font-size: 11px;
}

.visual-footer {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 9px;
  letter-spacing: .14em;
}

.form-view,
.result-view {
  padding: 62px 0 80px;
}

.form-header,
.result-hero {
  display: grid;
  grid-template-columns: 1fr 180px;
  gap: 36px;
  align-items: center;
  margin-bottom: 42px;
}

.form-header h2,
.result-hero h2 {
  font-size: clamp(42px, 5.2vw, 70px);
}

.progress-box,
.result-badge {
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  align-content: center;
  border-radius: 50%;
  background: white;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.progress-box span,
.result-badge strong {
  color: var(--primary);
  font-size: 38px;
  font-weight: 800;
}

.progress-box small,
.result-badge span {
  color: var(--muted);
  font-size: 10px;
  letter-spacing: .14em;
}

.blog-form {
  display: grid;
  gap: 18px;
}

.field-group {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: white;
  box-shadow: 0 14px 40px rgba(45,72,86,.06);
}

.field-group > label,
.field-label {
  display: block;
  margin-bottom: 14px;
  font-size: 15px;
  font-weight: 800;
}

.field-group input[type="text"],
.field-group textarea {
  min-width: 0;
  width: 100%;
  padding: 15px 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--ink);
  background: #fbfdfe;
  outline: none;
}

.field-group input[type="text"]:focus,
.field-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(31,183,176,.10);
}

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

.choice-grid label {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 12px;
  align-items: center;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fbfdfe;
}

.choice-grid label:has(input:checked) {
  border-color: var(--primary);
  background: rgba(31,183,176,.07);
}

.choice-grid input { accent-color: var(--primary); }

.form-actions {
  display: flex;
  justify-content: flex-end;
}

.stage-badge {
  display: inline-flex;
  margin: 0 0 20px;
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--primary-dark);
  background: rgba(31,183,176,.09);
  border: 1px solid rgba(31,183,176,.18);
  font-size: 11px;
  font-weight: 800;
}

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

.result-card {
  min-width: 0;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: white;
}

.main-card {
  background: linear-gradient(135deg, #eefafa, #ffffff);
  border-color: rgba(31,183,176,.22);
}

.structure-card {
  grid-column: 1 / -1;
}

.result-card h2 {
  margin: 0 0 14px;
  font-size: clamp(28px, 3vw, 42px);
  line-height: 1.4;
}

.result-card p {
  color: var(--muted);
  line-height: 1.8;
}

.result-card ul,
.result-card ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

.result-card li {
  padding: 12px 0;
  border-top: 1px solid var(--line);
  line-height: 1.7;
}

.structure-card ol {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px 24px;
}

.result-card strong {
  display: block;
  margin-bottom: 8px;
  color: var(--primary);
  font-size: 10px;
  letter-spacing: .12em;
}

.quote-text {
  font-size: 22px;
  color: var(--ink) !important;
  font-weight: 700;
}

.prompt-section,
.next-step-section,
.related-apps-section {
  margin-top: 60px;
  padding-top: 42px;
  border-top: 1px solid var(--line);
}

.privacy-notice,
.prompt-notice {
  margin-bottom: 22px;
  padding: 18px 20px;
  border: 1px solid rgba(31,183,176,.24);
  border-radius: 14px;
  background: rgba(31,183,176,.06);
}

.privacy-notice strong,
.prompt-notice strong {
  display: block;
  margin-bottom: 7px;
  font-size: 13px;
}

.privacy-notice p,
.prompt-notice p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.75;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 24px;
}

.section-heading h2 {
  margin: 0 0 10px;
  font-size: clamp(34px, 4vw, 52px);
  letter-spacing: -.04em;
}

.prompt-box {
  min-width: 0;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: white;
}

.prompt-box textarea {
  width: 100%;
  min-height: 420px;
  resize: vertical;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--ink);
  background: #f9fbfc;
  line-height: 1.8;
}

.prompt-box .button {
  margin-top: 14px;
}

.copy-status {
  min-height: 1.5em;
  margin: 10px 0 0;
  color: var(--primary-dark);
  font-size: 12px;
}

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

.recommendation-card {
  min-width: 0;
  min-height: 230px;
  display: flex;
  flex-direction: column;
  padding: 26px;
  color: var(--ink);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: white;
}

.recommendation-type {
  color: var(--accent);
  font-size: 9px;
  letter-spacing: .16em;
  font-weight: 800;
}

.recommendation-card h3 {
  margin: 18px 0 12px;
  font-size: 23px;
  line-height: 1.4;
}

.recommendation-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.recommendation-arrow {
  margin-top: auto;
  padding-top: 20px;
  color: var(--primary);
  font-weight: 800;
}

.related-app-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 16px;
}

.related-app-card {
  min-width: 0;
  min-height: 230px;
  display: flex;
  flex-direction: column;
  padding: 25px;
  color: var(--ink);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: white;
  transition: transform .18s ease, border-color .18s ease;
}

.related-app-card:hover {
  transform: translateY(-2px);
  border-color: rgba(31,183,176,.42);
}

.related-app-card > span {
  color: var(--primary);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .14em;
}

.related-app-card h3 {
  margin: 18px 0 10px;
  font-size: 22px;
  line-height: 1.45;
}

.related-app-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.related-app-card b {
  margin-top: auto;
  padding-top: 18px;
  color: var(--primary);
  font-size: 13px;
}

.result-cta {
  margin-top: 18px;
  padding: 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  border: 1px solid rgba(139,195,74,.28);
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #f7fbe9, #ffffff);
}

.result-cta h2 {
  margin: 0 0 10px;
  font-size: 30px;
}

.result-cta p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.cta-link {
  flex: 0 0 auto;
  min-width: 230px;
  display: inline-flex;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 18px;
  color: #233214;
  text-decoration: none;
  font-weight: 800;
  border-radius: 12px;
  background: var(--accent);
}

.app-footer {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 9px;
  letter-spacing: .14em;
}

.app-footer a {
  color: var(--muted);
  text-underline-offset: 3px;
}

.footer-separator { margin: 0 8px; }

[hidden] { display: none !important; }

.breadcrumb,
.usage-notice {
  width: min(1220px, calc(100% - 40px));
  margin-left: auto;
  margin-right: auto;
}

.breadcrumb {
  min-height: 46px;
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--muted);
  font-size: 11px;
}

.breadcrumb a {
  color: var(--muted);
  text-underline-offset: 3px;
}

.usage-notice {
  margin-top: 20px;
  margin-bottom: 20px;
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: #fbfdfe;
}

.usage-notice h2 {
  margin: 0 0 8px;
  color: #17242a;
  font-size: 16px;
  font-weight: 800;
}

.usage-notice p {
  margin: 0;
  color: #66777e;
  font-size: 12px;
  line-height: 1.8;
}

noscript {
  display: block;
  padding: 14px 20px;
  color: #7a1f1f;
  background: #fff4f4;
  border-bottom: 1px solid #f1caca;
  text-align: center;
  font-size: 13px;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 3px solid rgba(31,183,176,.34);
  outline-offset: 4px;
}

.result-card,
.recommendation-card,
.related-app-card,
.prompt-box,
.section-heading,
.result-cta {
  overflow-wrap: anywhere;
}

@media (max-width: 980px) {
  .intro-view { grid-template-columns: 1fr; }
  .form-header,
  .result-hero { grid-template-columns: 1fr; }
  .progress-box,
  .result-badge { width: 160px; }
  .recommendation-grid { grid-template-columns: 1fr; }
  .related-app-grid { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .app-header,
  .app-footer,
  main,
  .breadcrumb,
  .usage-notice {
    width: min(100% - 24px, 1220px);
  }

  .header-meta { display: none; }
  .intro-copy h1 { font-size: 48px; }

  .benefit-row,
  .choice-grid,
  .result-grid,
  .structure-card ol {
    grid-template-columns: 1fr;
  }

  .benefit-row div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .structure-card { grid-column: auto; }

  .result-cta {
    align-items: flex-start;
    flex-direction: column;
  }

  .cta-link {
    width: 100%;
    min-width: 0;
  }

  .app-footer {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 6px;
  }
}