:root {
  --bg: #f7fbf8;
  --surface: #ffffff;
  --surface-soft: #f1f8f4;
  --surface-warm: #fffaf0;
  --text: #26332d;
  --muted: #647169;
  --line: #dce8e0;
  --accent: #397a5a;
  --accent-dark: #275b42;
  --accent-soft: #e7f4ec;
  --focus: #1f5f8b;
  --shadow: 0 14px 38px rgba(45, 76, 60, .08);
  --radius: 22px;
  --radius-sm: 14px;
  --max: 1120px;
  --narrow: 820px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family:
    -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN",
    "Yu Gothic", "Meiryo", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.8;
  letter-spacing: .01em;
}

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

button { color: inherit; }

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

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

[hidden] { display: none !important; }

.skip-link {
  position: fixed;
  left: 12px;
  top: 12px;
  z-index: 1000;
  padding: 10px 14px;
  background: #fff;
  border-radius: 10px;
  transform: translateY(-160%);
  transition: transform .2s ease;
}

.skip-link:focus { transform: translateY(0); }

.shell {
  width: min(calc(100% - 36px), var(--max));
  margin-inline: auto;
}

.shell.narrow { width: min(calc(100% - 36px), var(--narrow)); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247, 251, 248, .9);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(220, 232, 224, .8);
}

.header-inner {
  min-height: 64px;
  display: flex;
  align-items: center;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  font-weight: 800;
  line-height: 1.35;
}

.brand-mark { font-size: 1.3rem; }

.hero {
  padding: 68px 0 46px;
  background:
    radial-gradient(circle at 12% 18%, rgba(211, 238, 219, .65), transparent 24rem),
    radial-gradient(circle at 88% 12%, rgba(255, 239, 196, .5), transparent 22rem),
    var(--bg);
}

.hero-inner {
  max-width: 900px;
  text-align: center;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent-dark);
  font-size: .84rem;
  font-weight: 800;
  letter-spacing: .08em;
}

h1, h2, h3, p { overflow-wrap: anywhere; }

h1 {
  margin: 0;
  font-size: clamp(2.05rem, 5vw, 4rem);
  line-height: 1.26;
  letter-spacing: -.025em;
}

.hero-lead {
  margin: 24px auto 0;
  max-width: 720px;
  font-size: clamp(1rem, 2vw, 1.18rem);
}

.hero-emphasis {
  margin: 16px auto 0;
  max-width: 720px;
  font-size: clamp(1rem, 2vw, 1.16rem);
}

.hero-emphasis strong { box-shadow: inset 0 -.48em 0 rgba(245, 211, 95, .36); }

.strategy-legend {
  margin: 30px auto 0;
  max-width: 760px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.legend-item {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 10px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.82);
  border-radius: 16px;
  font-weight: 700;
}

.legend-item > span:first-child { font-size: 1.35rem; }

.hero-note {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: .94rem;
}

.section { padding: 64px 0; }

.section-heading { margin-bottom: 28px; }

.section-heading.centered { text-align: center; }

.section-heading h2 {
  margin: 0;
  font-size: clamp(1.6rem, 3vw, 2.35rem);
  line-height: 1.4;
}

.section-heading p:last-child {
  margin: 10px 0 0;
  color: var(--muted);
}

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

.category-card {
  appearance: none;
  width: 100%;
  min-height: 190px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 8px 28px rgba(45, 76, 60, .055);
  text-align: left;
  cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}

.category-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: #bcd5c5;
}

.category-icon {
  display: block;
  margin-bottom: 14px;
  font-size: 2rem;
}

.category-card strong {
  display: block;
  font-size: 1.18rem;
  line-height: 1.5;
}

.category-card span:last-child {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: .95rem;
  line-height: 1.7;
}

.section-detail {
  padding-top: 34px;
  background: #fff;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.back-button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--accent-dark);
  font-weight: 800;
  cursor: pointer;
  padding: 8px 0;
  margin-bottom: 18px;
}

.detail-header {
  padding: 28px;
  background: var(--surface-soft);
  border-radius: var(--radius);
}

.detail-title-row {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.detail-icon {
  flex: 0 0 auto;
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  font-size: 1.9rem;
}

.detail-header h2 {
  margin: 0;
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  line-height: 1.4;
}

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

.situations-block { margin-top: 34px; }

.situations-block h3,
.strategies-heading h3,
.ask-box h3 {
  margin: 0 0 14px;
  font-size: 1.25rem;
}

.situation-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.situation-chip {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 9px 14px;
  border-radius: 999px;
  background: #f5f7f5;
  border: 1px solid #e1e7e3;
  line-height: 1.55;
}

.situation-note {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: .93rem;
}

.strategies-heading {
  margin-top: 42px;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
}

.strategies-heading p {
  margin: 0;
  color: var(--muted);
}

.strategy-grid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.strategy-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 265px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface);
  box-shadow: 0 7px 26px rgba(45, 76, 60, .05);
}

.strategy-type {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 32px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: .82rem;
  font-weight: 800;
}

.strategy-card h4 {
  margin: 15px 0 6px;
  font-size: 1.13rem;
  line-height: 1.5;
}

.strategy-card p {
  margin: 0;
  color: #48554e;
}

.strategy-examples {
  margin: 12px 0 0;
  padding-left: 1.25em;
  color: #48554e;
}

.strategy-caution {
  margin-top: 12px !important;
  padding: 10px 12px;
  background: var(--surface-warm);
  border-radius: 12px;
  color: #66562f !important;
  font-size: .88rem;
}

.try-button {
  appearance: none;
  margin-top: auto;
  padding: 11px 14px;
  border: 1px solid #c8ddd0;
  border-radius: 12px;
  background: #fff;
  color: var(--accent-dark);
  font-weight: 800;
  cursor: pointer;
  transition: background .18s ease, transform .18s ease;
}

.try-button:hover { background: var(--accent-soft); }

.try-button[aria-pressed="true"] {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.selected-strategy-summary {
  margin-top: 20px;
  padding: 16px 18px;
  background: var(--accent-soft);
  border-radius: 16px;
}

.selected-strategy-summary strong { display: block; }

.selected-strategy-summary p { margin: 4px 0 0; }

.ask-box {
  margin-top: 34px;
  padding: 24px;
  background: #f9f5ff;
  border: 1px solid #e5dbef;
  border-radius: var(--radius);
}

.ask-box > p {
  margin: -4px 0 16px;
  color: var(--muted);
}

.ask-list {
  display: grid;
  gap: 10px;
}

.ask-example {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 14px;
  background: #fff;
  border: 1px solid #e7dfee;
  border-radius: 14px;
}

.ask-text { flex: 1; }

.copy-button {
  flex: 0 0 auto;
  appearance: none;
  border: 1px solid #d8cbe3;
  background: #fff;
  border-radius: 10px;
  padding: 8px 10px;
  color: #5d4670;
  font-weight: 800;
  cursor: pointer;
}

.detail-bottom-actions {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.primary-button,
.secondary-button {
  appearance: none;
  min-height: 48px;
  border-radius: 13px;
  padding: 11px 18px;
  font-weight: 800;
  cursor: pointer;
}

.primary-button {
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
}

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

.section-reflection { background: var(--surface-soft); }

.reflection-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.reflection-card {
  appearance: none;
  min-height: 220px;
  padding: 22px 18px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-align: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease;
}

.reflection-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.reflection-card strong { font-size: 1.05rem; }

.reflection-card span:last-child {
  color: var(--muted);
  font-size: .92rem;
}

.reflection-icon { font-size: 2.25rem; }

.reflection-feedback {
  min-height: 0;
  margin-top: 18px;
}

.reflection-feedback:not(:empty) {
  padding: 18px 20px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
}

.reflection-feedback strong {
  display: block;
  margin-bottom: 4px;
}

.principle-section { background: #fff; }

.principle-card {
  padding: clamp(26px, 5vw, 44px);
  background: #fbfaf4;
  border: 1px solid #ece6cc;
  border-radius: 28px;
}

.principle-card h2 {
  margin: 0;
  font-size: clamp(1.45rem, 3vw, 2rem);
}

.before-after-list {
  margin-top: 24px;
  display: grid;
  gap: 12px;
}

.before-after-list > div {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: rgba(255,255,255,.68);
  border-radius: 14px;
}

.before { color: var(--muted); }

.arrow { color: #a5852c; font-weight: 900; }

.principle-message {
  margin: 22px 0 0;
  font-weight: 800;
}

.support-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  padding: 28px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 7px 25px rgba(45, 76, 60, .05);
}

.support-icon {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  background: var(--accent-soft);
  border-radius: 17px;
  font-size: 1.7rem;
}

.support-card h2 { margin: 0; }

.support-card p { margin: 10px 0 0; }

.more-section { padding-top: 18px; }

.more-details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  overflow: hidden;
}

.more-details summary {
  padding: 19px 22px;
  cursor: pointer;
  font-weight: 800;
}

.more-content {
  padding: 0 22px 22px;
  color: #48554e;
}

.more-content p { margin: 12px 0 0; }

.more-closing {
  padding: 16px;
  background: var(--surface-soft);
  border-radius: 14px;
}

.site-footer {
  margin-top: 40px;
  padding: 26px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .88rem;
  text-align: center;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(22px + env(safe-area-inset-bottom));
  z-index: 100;
  transform: translate(-50%, 120px);
  max-width: min(92vw, 520px);
  padding: 12px 16px;
  border-radius: 14px;
  background: #24372e;
  color: #fff;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: transform .22s ease, opacity .22s ease;
  text-align: center;
}

.toast.show {
  transform: translate(-50%, 0);
  opacity: 1;
}

.mobile-break { display: none; }

@media (max-width: 900px) {
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .strategy-grid { grid-template-columns: 1fr; }
  .reflection-grid { grid-template-columns: 1fr; }
  .reflection-card {
    min-height: 0;
    flex-direction: row;
    justify-content: flex-start;
    text-align: left;
  }
  .reflection-card span:last-child { flex: 1; }
}

@media (max-width: 680px) {
  .shell, .shell.narrow { width: min(calc(100% - 28px), var(--max)); }

  .site-header { position: static; }
  .header-inner { min-height: 58px; }
  .brand { font-size: .92rem; }

  .hero { padding: 48px 0 34px; }
  .mobile-break { display: block; }

  .strategy-legend {
    grid-template-columns: repeat(2, 1fr);
  }

  .legend-item {
    min-height: 56px;
    font-size: .9rem;
  }

  .section { padding: 48px 0; }

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

  .category-card {
    min-height: 0;
    padding: 20px;
  }

  .detail-header { padding: 20px; }

  .detail-title-row { gap: 12px; }

  .detail-icon {
    width: 48px;
    height: 48px;
    border-radius: 15px;
    font-size: 1.55rem;
  }

  .strategies-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .strategy-card { min-height: 0; }

  .ask-example {
    align-items: flex-start;
    flex-direction: column;
  }

  .copy-button { align-self: stretch; }

  .before-after-list > div {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  .arrow { transform: rotate(90deg); width: fit-content; }

  .support-card {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }
}


/* STEP 2: 献血ページのように左で選び、右を切り替える */
.selected-category-card {
  margin-bottom: 26px;
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface-soft);
}
.selected-category-card .eyebrow { margin-bottom: 10px; }
.selected-category-summary-inner {
  display: flex;
  align-items: center;
  gap: 14px;
}
.selected-category-icon {
  flex: 0 0 auto;
  width: 50px;
  height: 50px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: #fff;
  font-size: 1.65rem;
}
.selected-category-summary-inner strong {
  display: block;
  font-size: 1.15rem;
}
.selected-category-summary-inner span:last-child {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: .92rem;
}

.detail-switcher {
  display: grid;
  grid-template-columns: 270px minmax(0, 1fr);
  gap: 30px;
  align-items: start;
}
.detail-side {
  position: sticky;
  top: 86px;
  padding: 22px 18px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #f1f8f4;
}
.detail-side-label {
  margin: 0 8px 13px;
  color: var(--accent-dark);
  font-size: .84rem;
  font-weight: 900;
  letter-spacing: .06em;
}
.category-nav {
  display: grid;
  gap: 8px;
}
.category-nav-button {
  appearance: none;
  width: 100%;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  padding: 12px 13px;
  border: 1px solid transparent;
  border-radius: 14px;
  background: transparent;
  text-align: left;
  cursor: pointer;
  font-weight: 750;
  line-height: 1.45;
}
.category-nav-button:hover { background: #fff; }
.category-nav-button.active {
  border-color: #9fc8b2;
  background: #fff;
  box-shadow: 0 5px 18px rgba(45,76,60,.08);
  color: var(--accent-dark);
}
.category-nav-icon {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: var(--accent-soft);
}
.detail-main {
  min-width: 0;
  padding: 0 4px 12px;
}
.detail-main .detail-header { margin-top: 0; }
.section-detail .back-button { margin-top: 30px; margin-bottom: 0; }

/* 大切にしたいこと：考え方 → 例 → メッセージ */
.principle-intro {
  margin: 0;
  color: #48554e;
  font-size: 1rem;
  line-height: 1.95;
}
.principle-lead {
  margin: 18px 0 0;
  color: var(--accent-dark);
}
.principle-message {
  line-height: 1.9;
}
.principle-message strong {
  display: inline-block;
  margin-top: 7px;
  color: var(--accent-dark);
}

@media (max-width: 820px) {
  .detail-switcher { grid-template-columns: 1fr; gap: 18px; }
  .detail-side {
    position: static;
    padding: 15px;
  }
  .category-nav {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: thin;
  }
  .category-nav-button {
    flex: 0 0 auto;
    width: auto;
    max-width: 220px;
    grid-template-columns: 30px auto;
    white-space: nowrap;
  }
  .category-nav-icon { width: 29px; height: 29px; }
}

@media (max-width: 560px) {
  .selected-category-card { padding: 18px; }
  .selected-category-summary-inner { align-items: flex-start; }
  .selected-category-summary-inner span:last-child { font-size: .86rem; }
  .detail-side-label { margin-left: 4px; }
  .before-after-list > div {
    grid-template-columns: 1fr;
    gap: 5px;
  }
  .before-after-list .arrow { transform: rotate(90deg); justify-self: start; }
}