@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@400;700&family=Noto+Sans+JP:wght@400;500;700&display=swap');

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg: #F3EDE1;
  --color-text: #2A2418;
  --color-accent: #6B5A45;
  --color-accent-light: #8C7660;
  --color-muted: #8A7B6A;
  --color-surface: #EDE6D8;
  --color-surface-2: #E5DDD0;
  --color-border: #D5CBBC;
  --font-serif: 'Noto Serif JP', serif;
  --font-sans: 'Noto Sans JP', sans-serif;
  --max-width: 900px;
  --radius: 12px;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* ============================================================
   共通レイアウト
   ============================================================ */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================================
   ヘッダー
   ============================================================ */

.site-header {
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-text);
}

.header-logo img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}

.header-logo-name {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.header-nav {
  display: flex;
  gap: 24px;
}

.header-nav a {
  text-decoration: none;
  color: var(--color-muted);
  font-size: 0.875rem;
  transition: color 0.2s;
}

.header-nav a:hover {
  color: var(--color-accent);
}

/* ============================================================
   フッター
   ============================================================ */

.site-footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 40px 0;
  margin-top: 80px;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}

.footer-nav {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-nav a {
  text-decoration: none;
  color: var(--color-muted);
  font-size: 0.875rem;
  transition: color 0.2s;
}

.footer-nav a:hover {
  color: var(--color-accent);
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--color-muted);
}

/* ============================================================
   ヒーローセクション
   ============================================================ */

.hero {
  padding: 80px 0 72px;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 4px 14px;
  font-size: 0.8rem;
  color: var(--color-muted);
  margin-bottom: 24px;
}

.hero-icon {
  width: 96px;
  height: 96px;
  border-radius: 22px;
  margin: 0 auto 24px;
  display: block;
  box-shadow: 0 4px 24px rgba(42, 36, 24, 0.12);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 6vw, 3rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-text);
  margin-bottom: 12px;
  line-height: 1.3;
}

.hero-subtitle {
  font-size: clamp(0.95rem, 2.5vw, 1.1rem);
  color: var(--color-muted);
  margin-bottom: 8px;
}

.hero-catch {
  font-size: clamp(1.1rem, 3vw, 1.4rem);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 40px;
}

.hero-download {
  display: flex;
  justify-content: center;
}

.btn-appstore {
  display: inline-block;
  transition: opacity 0.2s, transform 0.2s;
}

.btn-appstore:hover {
  opacity: 0.85;
  transform: translateY(-1px);
}

.btn-appstore img {
  height: 52px;
  width: auto;
}

/* ============================================================
   機能紹介セクション
   ============================================================ */

.features {
  padding: 72px 0;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 4vw, 1.8rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 48px;
  color: var(--color-text);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px 24px;
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 12px;
  display: block;
}

.feature-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-text);
}

.feature-desc {
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: 1.7;
}

/* ============================================================
   スクリーンショット（プレースホルダー）
   ============================================================ */

.screenshots {
  padding: 72px 0;
  background-color: var(--color-surface);
}

.screenshots-row {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 40px;
}

.screenshot-placeholder {
  width: 200px;
  height: 400px;
  background-color: var(--color-surface-2);
  border: 2px dashed var(--color-border);
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 8px;
  color: var(--color-muted);
  font-size: 0.8rem;
  text-align: center;
}

.screenshot-placeholder .placeholder-label {
  font-size: 0.75rem;
  color: var(--color-muted);
  opacity: 0.7;
}

/* ============================================================
   料金セクション
   ============================================================ */

.pricing {
  padding: 72px 0;
}

.pricing-lead {
  text-align: center;
  font-size: 1.05rem;
  margin-bottom: 40px;
  color: var(--color-text);
}

.pricing-lead strong {
  color: var(--color-accent);
  font-weight: 700;
}

.pricing-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  max-width: 720px;
  margin: 0 auto;
}

.pricing-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
}

.pricing-card.featured {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}

.pricing-period {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-bottom: 8px;
}

.pricing-card.featured .pricing-period {
  color: rgba(255,255,255,0.75);
}

.pricing-price {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}

.pricing-card.featured .pricing-price {
  color: #fff;
}

.pricing-note {
  font-size: 0.78rem;
  color: var(--color-muted);
}

.pricing-card.featured .pricing-note {
  color: rgba(255,255,255,0.7);
}

.pricing-footer-note {
  text-align: center;
  margin-top: 24px;
  font-size: 0.82rem;
  color: var(--color-muted);
}

/* ============================================================
   ダウンロードセクション（ボトム）
   ============================================================ */

.download-section {
  padding: 72px 0;
  background-color: var(--color-surface);
  text-align: center;
}

.download-section .section-title {
  margin-bottom: 24px;
}

.download-section p {
  color: var(--color-muted);
  margin-bottom: 32px;
  font-size: 0.95rem;
}

/* ============================================================
   法令ページ共通（privacy / terms / support）
   ============================================================ */

.legal-page {
  max-width: 720px;
  margin: 0 auto;
  padding: 60px 24px 80px;
}

.legal-page h1 {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--color-text);
}

.legal-page .legal-meta {
  font-size: 0.82rem;
  color: var(--color-muted);
  margin-bottom: 28px;
}

.legal-page .legal-intro {
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--color-text);
  margin-bottom: 36px;
}

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

.legal-section h2 {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--color-border);
}

.legal-section p {
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--color-text);
  margin-bottom: 8px;
}

.legal-section ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.legal-section ul li {
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--color-text);
  padding-left: 1em;
  margin-bottom: 4px;
}

.legal-link {
  color: var(--color-accent);
  text-decoration: underline;
}

.legal-link:hover {
  color: var(--color-accent-light);
}

/* ============================================================
   サポートページ
   ============================================================ */

.support-contact-box {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px 28px;
  margin-bottom: 40px;
  text-align: center;
}

.support-contact-box p {
  color: var(--color-muted);
  margin-bottom: 20px;
  font-size: 0.95rem;
}

.btn-primary {
  display: inline-block;
  background-color: var(--color-accent);
  color: #fff;
  text-decoration: none;
  padding: 12px 28px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.95rem;
  transition: background-color 0.2s, transform 0.2s;
}

.btn-primary:hover {
  background-color: var(--color-accent-light);
  transform: translateY(-1px);
}

.support-email {
  margin-top: 16px;
  font-size: 0.9rem;
  color: var(--color-muted);
}

.support-email a {
  color: var(--color-accent);
  text-decoration: underline;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px 22px;
}

.faq-q {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-text);
  margin-bottom: 8px;
}

.faq-q::before {
  content: 'Q. ';
  color: var(--color-accent);
}

.faq-a {
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: 1.75;
}

/* ============================================================
   レスポンシブ
   ============================================================ */

@media (max-width: 640px) {
  .header-nav {
    display: none;
  }

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

  .pricing-cards {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 56px 0 48px;
  }

  .features,
  .screenshots,
  .pricing,
  .download-section {
    padding: 48px 0;
  }

  .screenshots-row {
    gap: 12px;
  }

  .screenshot-placeholder {
    width: 160px;
    height: 320px;
  }

  .legal-page {
    padding: 40px 20px 60px;
  }
}

@media (max-width: 480px) {
  .hero-icon {
    width: 72px;
    height: 72px;
    border-radius: 16px;
  }

  .screenshots-row {
    flex-direction: column;
    align-items: center;
  }
}