/* ===== 嶽ノ子 共通ページCSS（和モダン × Material 3） ===== */
:root {
  --kinari: #F5EFE3;
  --kinari-2: #EDE4D1;
  --sumi: #1A1614;
  --sumi-2: #2E2825;
  --shu: #C04A3E;
  --shu-light: #E8A999;
  --shu-surface: #F4D9D0;
  --uguisu: #7A8450;
  --uguisu-surface: #D9DEC1;
  --ai: #385E74;
  --ai-surface: #C8D6DE;
  --yamabuki: #D4A24A;
  --yamabuki-surface: #EFDEB8;
  --nezu: #888578;
  --nezu-surface: #DDDAD1;
  --on-sumi: #F5EFE3;
  --on-shu: #FFF8F4;

  --serif: "Shippori Mincho", "Yu Mincho", serif;
  --sans: "Noto Sans JP", system-ui, sans-serif;

  --r-sm: 16px;
  --r-md: 28px;
  --r-lg: 44px;
  --r-pill: 999px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.8;
  color: var(--sumi);
  background: var(--kinari);
  -webkit-font-smoothing: antialiased;
  letter-spacing: 0.02em;
  overflow-x: hidden;
}
::selection { background: var(--sumi); color: var(--kinari); }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; }
ul { list-style: none; }

/* ===== NAV ===== */
.nav {
  position: fixed;
  top: 16px; left: 16px; right: 16px;
  z-index: 100;
  padding: 12px 16px 12px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(245, 239, 227, 0.85);
  backdrop-filter: blur(24px) saturate(1.4);
  -webkit-backdrop-filter: blur(24px) saturate(1.4);
  border-radius: var(--r-pill);
  border: 1px solid rgba(26, 22, 20, 0.08);
  transition: top 0.3s, background 0.3s;
}
.nav.scrolled { top: 8px; background: rgba(245, 239, 227, 0.95); }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; }
.brand-mark {
  width: 36px; height: 36px;
  background: var(--sumi); color: var(--kinari);
  border-radius: 50%;
  display: grid; place-items: center;
  font-family: var(--serif);
  font-size: 18px; font-weight: 600;
}
.brand-name { font-family: var(--serif); font-size: 17px; letter-spacing: 0.08em; }
.nav-links { display: flex; gap: 4px; }
.nav-link {
  padding: 8px 14px;
  border-radius: var(--r-pill);
  font-size: 13px; font-weight: 500;
  transition: background 0.2s;
}
.nav-link:hover { background: rgba(26,22,20,0.06); }
.nav-link.active { background: var(--sumi); color: var(--kinari); }
.nav-cta {
  padding: 10px 18px;
  background: var(--sumi); color: var(--kinari);
  border-radius: var(--r-pill);
  font-size: 13px; font-weight: 500;
  display: inline-flex; align-items: center; gap: 6px;
  transition: transform 0.2s;
}
.nav-cta:hover { transform: translateY(-1px); }
@media (max-width: 820px) {
  .nav-links { display: none; }
  .nav { padding: 10px 12px 10px 18px; }
}

/* ===== PAGE LAYOUT ===== */
.page { padding-top: 92px; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 820px; margin: 0 auto; padding: 0 24px; }

/* ===== PAGE HERO ===== */
.page-hero {
  padding: 64px 0 48px;
}
.page-hero-inner {
  background: var(--sumi); color: var(--on-sumi);
  border-radius: var(--r-lg);
  padding: 72px 56px;
  position: relative;
  overflow: hidden;
}
.page-hero-inner::before {
  content: '';
  position: absolute;
  top: -80px; right: -80px;
  width: 360px; height: 360px;
  background: radial-gradient(circle, var(--shu) 0%, transparent 70%);
  opacity: 0.35;
  pointer-events: none;
}
.page-hero .eyebrow {
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: 0.25em;
  color: var(--shu-light);
  margin-bottom: 20px;
  display: inline-block;
}
.page-hero h1 {
  font-family: var(--serif);
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: 0.02em;
  margin-bottom: 20px;
}
.page-hero .lead {
  font-size: 16px;
  line-height: 1.9;
  color: rgba(245,239,227,0.85);
  max-width: 640px;
}
@media (max-width: 640px) {
  .page-hero-inner { padding: 48px 28px; border-radius: var(--r-md); }
}

/* ===== CARDS / SECTIONS ===== */
.section { padding: 48px 0; }
.section-title {
  font-family: var(--serif);
  font-size: 32px;
  font-weight: 600;
  margin-bottom: 32px;
  letter-spacing: 0.02em;
}
.section-title .num {
  font-family: var(--serif);
  font-size: 14px;
  color: var(--shu);
  letter-spacing: 0.2em;
  display: block;
  margin-bottom: 8px;
}

.card {
  background: #fff;
  border-radius: var(--r-md);
  padding: 36px;
  border: 1px solid rgba(26,22,20,0.06);
}
.card h3 {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
}
.card p { color: var(--sumi-2); }

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px 48px;
}
.info-item {
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(26,22,20,0.1);
}
.info-item:last-child { border-bottom: none; }
.info-item h4 {
  font-family: var(--serif);
  font-size: 13px;
  color: var(--nezu);
  letter-spacing: 0.1em;
  margin-bottom: 8px;
  font-weight: 500;
}
.info-item p {
  font-size: 16px;
  color: var(--sumi);
}

/* ===== LEGAL STYLES (privacy/terms) ===== */
.legal-intro {
  background: var(--kinari-2);
  border-radius: var(--r-md);
  padding: 28px 32px;
  margin-bottom: 32px;
  font-size: 14px;
  line-height: 1.9;
}
.legal-intro .meta {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid rgba(26,22,20,0.12);
  font-size: 13px;
  color: var(--nezu);
}
.legal-article {
  padding: 28px 0;
  border-bottom: 1px solid rgba(26,22,20,0.08);
}
.legal-article:last-of-type { border-bottom: none; }
.legal-article h2 {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 16px;
  display: flex; align-items: baseline; gap: 12px;
}
.legal-article h2 .num {
  font-size: 12px;
  color: var(--shu);
  letter-spacing: 0.2em;
}
.legal-article h3 {
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 600;
  margin-top: 20px;
  margin-bottom: 10px;
}
.legal-article p { margin-bottom: 12px; color: var(--sumi-2); }
.legal-article ul.bullet { padding-left: 20px; }
.legal-article ul.bullet li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 8px;
  color: var(--sumi-2);
  font-size: 14px;
}
.legal-article ul.bullet li::before {
  content: '';
  position: absolute;
  left: 0; top: 10px;
  width: 6px; height: 6px;
  background: var(--shu);
  border-radius: 50%;
}
.legal-note {
  background: var(--yamabuki-surface);
  border-left: 3px solid var(--yamabuki);
  padding: 16px 20px;
  border-radius: 4px 12px 12px 4px;
  margin: 16px 0;
  font-size: 14px;
}
.legal-note h4 { font-weight: 600; margin-bottom: 8px; }
.legal-mini-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin: 16px 0;
}
.legal-mini-grid > div {
  background: var(--kinari-2);
  padding: 16px;
  border-radius: var(--r-sm);
}
.legal-mini-grid h4 {
  font-family: var(--serif);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
}
.legal-mini-grid p { font-size: 13px; color: var(--sumi-2); }

/* ===== CTA ===== */
.cta-section { padding: 48px 0 64px; }
.cta-box {
  background: var(--shu); color: var(--on-shu);
  border-radius: var(--r-lg);
  padding: 56px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  bottom: -100px; left: -100px;
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(255,248,244,0.2) 0%, transparent 70%);
}
.cta-box h2 {
  font-family: var(--serif);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 600;
  margin-bottom: 16px;
  position: relative;
}
.cta-box p {
  font-size: 15px;
  margin-bottom: 28px;
  opacity: 0.92;
  position: relative;
}
.cta-actions {
  display: flex; gap: 12px; justify-content: center; flex-wrap: wrap;
  position: relative;
}
.btn {
  padding: 14px 28px;
  border-radius: var(--r-pill);
  font-size: 14px; font-weight: 500;
  display: inline-flex; align-items: center; gap: 8px;
  transition: transform 0.2s, background 0.2s;
}
.btn-filled {
  background: var(--sumi); color: var(--on-sumi);
}
.btn-filled:hover { transform: translateY(-2px); }
.btn-light {
  background: var(--kinari); color: var(--sumi);
}
.btn-light:hover { transform: translateY(-2px); }
.btn-outline {
  background: transparent; color: inherit;
  border: 1px solid currentColor;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--sumi); color: var(--on-sumi);
  padding: 64px 48px 32px;
  margin: 48px 16px 16px;
  border-radius: var(--r-lg);
}
.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(245,239,227,0.1);
}
.footer-brand p {
  margin-top: 16px;
  font-size: 13px;
  color: rgba(245,239,227,0.7);
  line-height: 1.8;
}
.footer-col h5 {
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--shu-light);
  margin-bottom: 16px;
  font-weight: 500;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a {
  font-size: 13px;
  color: rgba(245,239,227,0.75);
  transition: color 0.2s;
}
.footer-col ul li a:hover { color: var(--kinari); }
.footer-bottom {
  padding-top: 24px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  font-size: 12px;
  color: rgba(245,239,227,0.55);
  letter-spacing: 0.1em;
}
@media (max-width: 780px) {
  .footer { padding: 48px 28px 24px; margin: 32px 8px 8px; border-radius: var(--r-md); }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 24px; }
}

/* ===== PERSONA CARDS (plans.html) ===== */
.persona-filter {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-bottom: 32px;
}
.filter-btn {
  padding: 8px 18px;
  border-radius: var(--r-pill);
  background: #fff;
  border: 1px solid rgba(26,22,20,0.12);
  font-size: 13px; font-weight: 500;
  color: var(--sumi-2);
  transition: all 0.2s;
}
.filter-btn:hover { border-color: var(--sumi); }
.filter-btn.active {
  background: var(--sumi); color: var(--kinari); border-color: var(--sumi);
}
.persona-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
}
.persona-card {
  background: #fff;
  border-radius: var(--r-md);
  padding: 28px;
  border: 1px solid rgba(26,22,20,0.06);
  transition: transform 0.3s, box-shadow 0.3s;
  display: flex; flex-direction: column;
}
.persona-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(26,22,20,0.08);
}
.persona-head {
  display: flex; align-items: center; gap: 14px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(26,22,20,0.08);
  margin-bottom: 18px;
}
.persona-icon {
  width: 52px; height: 52px;
  border-radius: 50%;
  background: var(--kinari-2);
  display: grid; place-items: center;
  font-size: 24px;
}
.persona-name { font-family: var(--serif); font-size: 16px; font-weight: 600; }
.persona-role { font-size: 12px; color: var(--nezu); margin-top: 2px; }
.persona-tag {
  margin-left: auto;
  padding: 4px 10px;
  border-radius: var(--r-pill);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.05em;
}
.persona-tag.lite { background: var(--ai-surface); color: var(--ai); }
.persona-tag.standard { background: var(--uguisu-surface); color: var(--uguisu); }
.persona-tag.pro { background: var(--shu-surface); color: var(--shu); }
.persona-meta {
  display: flex; gap: 16px;
  font-size: 12px; color: var(--nezu);
  margin-bottom: 14px;
}
.persona-problem {
  background: var(--kinari-2);
  border-radius: var(--r-sm);
  padding: 14px 16px;
  margin-bottom: 14px;
}
.persona-problem h4 {
  font-family: var(--serif); font-size: 12px; font-weight: 600;
  color: var(--shu); letter-spacing: 0.15em;
  margin-bottom: 6px;
}
.persona-problem p { font-size: 13px; line-height: 1.7; color: var(--sumi-2); }
.persona-app {
  margin-bottom: 14px;
}
.persona-app h4 {
  font-family: var(--serif); font-size: 12px; font-weight: 600;
  color: var(--uguisu); letter-spacing: 0.15em;
  margin-bottom: 6px;
}
.persona-app .app-name { font-weight: 600; font-size: 14px; margin-bottom: 8px; }
.persona-app ul li {
  font-size: 12px; color: var(--sumi-2);
  padding-left: 14px; position: relative;
  margin-bottom: 3px;
}
.persona-app ul li::before {
  content: '›'; position: absolute; left: 0;
  color: var(--uguisu); font-weight: 600;
}
.persona-effects {
  margin-top: auto;
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 8px;
  padding-top: 14px;
  border-top: 1px solid rgba(26,22,20,0.08);
}
.persona-effect {
  background: var(--shu-surface);
  border-radius: var(--r-sm);
  padding: 12px;
  text-align: center;
}
.persona-effect .label { font-size: 10px; color: var(--shu); letter-spacing: 0.1em; }
.persona-effect .value {
  font-family: var(--serif);
  font-size: 20px; font-weight: 600; color: var(--sumi);
  margin-top: 4px;
}
.persona-story {
  margin-top: 12px;
  font-size: 12px; color: var(--sumi-2);
  line-height: 1.7;
  background: var(--uguisu-surface);
  padding: 12px 14px;
  border-radius: var(--r-sm);
}
.persona-details { margin-top: 12px; }
.persona-details summary {
  cursor: pointer; font-size: 12px; font-weight: 600;
  color: var(--ai); list-style: none;
}
.persona-details summary::-webkit-details-marker { display: none; }
.persona-details summary::after { content: ' ↓'; }
.persona-details[open] summary::after { content: ' ↑'; }
.persona-details .detail-body {
  margin-top: 10px; font-size: 12px; line-height: 1.8; color: var(--sumi-2);
  padding: 12px 14px; background: var(--kinari-2);
  border-radius: var(--r-sm);
}