/* ==========================================================================
   和風ツール工房 — Tokens
   ========================================================================== */
:root {
  color-scheme: light;
  --color-bg: #FDFCFA;
  --color-surface: #F4F2ED;
  --color-surface-raised: #FFFFFF;
  --color-ink: #1C1A17;
  --color-ink-soft: #615B52;
  --color-line: #E4E0D6;
  --color-accent: #1F4E79;
  --color-accent-ink: #16385C;
  --color-accent-soft: #E4ECF3;
  --color-warn-soft: #FBEFE4;
  --color-warn-ink: #96551B;

  --font-display: "Shippori Mincho", "Hiragino Mincho ProN", serif;
  --font-body: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, monospace;

  --max-width: 1240px;
  --space-page: clamp(1.25rem, 4vw, 3rem);
  --radius: 4px;
}

/* ダークモード（墨と藍）。手動トグルで data-theme を切り替える。
   OS設定(prefers-color-scheme)はヒントとして尊重しつつ、
   ユーザーの明示的な選択(data-theme)が常に優先される。 */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --color-bg: #16181C;
    --color-surface: #1E2126;
    --color-surface-raised: #262A30;
    --color-ink: #EDEAE3;
    --color-ink-soft: #A19B8F;
    --color-line: #34383F;
    --color-accent: #7FA8E0;
    --color-accent-ink: #A9C6EE;
    --color-accent-soft: #223349;
    --color-warn-soft: #3A2E1D;
    --color-warn-ink: #E0B57F;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --color-bg: #16181C;
  --color-surface: #1E2126;
  --color-surface-raised: #262A30;
  --color-ink: #EDEAE3;
  --color-ink-soft: #A19B8F;
  --color-line: #34383F;
  --color-accent: #7FA8E0;
  --color-accent-ink: #A9C6EE;
  --color-accent-soft: #223349;
  --color-warn-soft: #3A2E1D;
  --color-warn-ink: #E0B57F;
}
:root[data-theme="light"] {
  color-scheme: light;
  --color-bg: #FDFCFA;
  --color-surface: #F4F2ED;
  --color-surface-raised: #FFFFFF;
  --color-ink: #1C1A17;
  --color-ink-soft: #615B52;
  --color-line: #E4E0D6;
  --color-accent: #1F4E79;
  --color-accent-ink: #16385C;
  --color-accent-soft: #E4ECF3;
  --color-warn-soft: #FBEFE4;
  --color-warn-ink: #96551B;
}

/* ==========================================================================
   Reset / Base
   ========================================================================== */
* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.35;
  margin: 0;
  text-wrap: balance;
}
p { margin: 0; }

.wrap {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-page);
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-accent);
  color: #fff;
  padding: 0.75em 1.25em;
  z-index: 100;
  font-weight: 600;
}
.skip-link:focus { left: var(--space-page); top: var(--space-page); }

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--color-bg) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-line);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 2rem;
  padding-block: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  flex-shrink: 0;
}
.brand-mark { color: var(--color-accent); display: inline-flex; }
.brand-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.375rem;
  letter-spacing: 0.01em;
}
.brand-accent { color: var(--color-accent); }

.site-nav { display: flex; gap: 1.75rem; margin-inline-start: auto; }
.site-nav a { text-decoration: none; font-weight: 500; font-size: 0.9375rem; color: var(--color-ink-soft); }
.site-nav a:hover { color: var(--color-ink); }

.header-search { position: relative; display: flex; align-items: center; }
.header-search .search-icon { position: absolute; left: 0.75rem; color: var(--color-ink-soft); pointer-events: none; }
.header-search input {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  padding: 0.55rem 0.9rem 0.55rem 2.25rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-ink);
  width: 200px;
}
.header-search input:focus { width: 260px; transition: width 0.2s ease; }

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  padding: 0;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-ink);
  cursor: pointer;
}
.theme-toggle:hover { border-color: var(--color-ink-soft); }
.theme-toggle .icon-moon { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: inline-flex; }

@media (max-width: 860px) { .site-nav { display: none; } }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  padding-block: clamp(3rem, 8vw, 6rem) clamp(2.5rem, 6vw, 4rem);
  border-bottom: 1px solid var(--color-line);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(var(--color-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-line) 1px, transparent 1px);
  background-size: 64px 64px;
  background-position: center top;
  -webkit-mask-image: linear-gradient(to bottom, black, transparent 85%);
          mask-image: linear-gradient(to bottom, black, transparent 85%);
}
.hero-inner { position: relative; z-index: 1; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--color-accent-ink);
  margin-bottom: 1rem;
}

.hero-title { font-size: clamp(2.25rem, 5.5vw, 3.75rem); max-width: 18ch; }

.hero-sub {
  margin-top: 1.5rem;
  max-width: 58ch;
  font-size: 1.1875rem;
  color: var(--color-ink-soft);
}
.hero-sub strong { color: var(--color-ink); font-weight: 700; }

.hero-actions { display: flex; gap: 1rem; margin-top: 2.25rem; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
}
.btn-primary { background: var(--color-accent); color: #fff; }
.btn-primary:hover { background: var(--color-accent-ink); }
.btn-ghost { border-color: var(--color-line); color: var(--color-ink); background: var(--color-bg); }
.btn-ghost:hover { border-color: var(--color-ink-soft); }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, auto);
  gap: 2.5rem;
  margin: 3rem 0 0;
  padding-top: 2rem;
  border-top: 1px solid var(--color-line);
  max-width: 640px;
}
.hero-stats .stat dt { font-size: 0.8125rem; color: var(--color-ink-soft); margin-bottom: 0.35rem; }
.hero-stats .stat dd {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.75rem;
  font-variant-numeric: tabular-nums;
  color: var(--color-accent-ink);
}
.stat-unit { font-family: var(--font-body); font-size: 1rem; color: var(--color-ink-soft); font-weight: 400; }

@media (max-width: 640px) {
  .hero-stats { grid-template-columns: repeat(2, auto); row-gap: 1.5rem; }
}

/* ==========================================================================
   Section heads (shared)
   ========================================================================== */
.section-head { padding-block: clamp(2.5rem, 6vw, 3.5rem) 1.75rem; }
.section-head h2 { font-size: clamp(1.875rem, 3.5vw, 2.5rem); }
.section-desc { margin-top: 0.75rem; color: var(--color-ink-soft); font-size: 1.0625rem; max-width: 60ch; }
.catalog-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }

/* ==========================================================================
   How it works
   ========================================================================== */
.how { padding-bottom: clamp(2.5rem, 6vw, 4rem); }

.how-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}
.how-step {
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 1.5rem;
  background: var(--color-surface-raised);
}
.how-step-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-accent-ink);
  background: var(--color-accent-soft);
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius);
  margin-bottom: 0.9rem;
}
.how-step h3 { font-family: var(--font-body); font-size: 1.0625rem; font-weight: 700; margin-bottom: 0.5rem; }
.how-step p { font-size: 0.9375rem; color: var(--color-ink-soft); }

/* ==========================================================================
   Pricing
   ========================================================================== */
.pricing {
  background: var(--color-surface);
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  padding-bottom: clamp(3rem, 6vw, 4.5rem);
}

.price-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  max-width: 860px;
}

.price-card {
  background: var(--color-surface-raised);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.price-card--featured {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent);
}
.price-card-badge {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--color-accent-ink);
  background: var(--color-accent-soft);
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius);
  margin-bottom: 0.25rem;
}
.price-card-label { font-size: 0.9375rem; color: var(--color-ink-soft); font-weight: 500; }
.price-card-amount {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 2.5rem;
  color: var(--color-ink);
}
.price-card-unit { font-family: var(--font-body); font-size: 1rem; color: var(--color-ink-soft); font-weight: 400; margin-left: 0.35rem; }
.price-card-desc { color: var(--color-ink-soft); font-size: 0.9375rem; }
.price-card-list {
  list-style: none;
  margin: 0.25rem 0 0.5rem;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.9375rem;
}
.price-card-list li { padding-left: 1.1rem; position: relative; }
.price-card-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.55em;
  width: 6px; height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
}
.price-card-cta {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
}
.price-card-cta--pending {
  background: var(--color-warn-soft);
  color: var(--color-warn-ink);
  border: 1px dashed color-mix(in srgb, var(--color-warn-ink) 40%, transparent);
}
.price-note { margin-top: 1.5rem; font-size: 0.875rem; color: var(--color-ink-soft); max-width: 60ch; }

/* ==========================================================================
   Drawers / Filter chips
   ========================================================================== */
.drawers { padding-bottom: clamp(2rem, 5vw, 3rem); }

.filter-bar { display: flex; flex-wrap: wrap; gap: 0.6rem; }

.chip {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  color: var(--color-ink-soft);
  border-radius: var(--radius);
  padding: 0.55rem 0.9rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.chip:hover { border-color: var(--color-ink-soft); color: var(--color-ink); }
.chip.is-active { background: var(--color-accent); border-color: var(--color-accent); color: #fff; }
.chip-count { font-variant-numeric: tabular-nums; opacity: 0.7; }

/* ==========================================================================
   Catalog / Card grid
   ========================================================================== */
.catalog { padding-bottom: clamp(3rem, 6vw, 5rem); }

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.card {
  background: var(--color-surface-raised);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  text-decoration: none;
  color: inherit;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}
.card:hover {
  transform: translateY(-3px);
  border-color: var(--color-ink-soft);
  box-shadow: 0 10px 24px -16px rgba(28, 26, 23, 0.3);
}

.card-top { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; }

.card-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  border: 1px solid var(--color-line);
  background: var(--color-surface);
  object-fit: contain;
  padding: 4px;
}
.card-icon-fallback[hidden] {
  display: none;
}
.card-icon-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--color-accent-ink);
  background: var(--color-accent-soft);
}

.card-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.3rem;
}

.card-no {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-accent-ink);
  font-variant-numeric: tabular-nums;
}

.card-tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  text-align: right;
}

.card-name { font-size: 1.1875rem; margin-top: 0.35rem; }

.card-tagline { font-size: 0.9375rem; font-weight: 700; color: var(--color-accent-ink); }

.card-desc { font-size: 0.9375rem; color: var(--color-ink-soft); flex-grow: 1; }

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-line);
  margin-top: 0.25rem;
}
.card-trial {
  font-family: var(--font-mono);
  color: var(--color-ink-soft);
}
.card-price {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--color-accent-ink);
}

.empty-state {
  margin-top: 2rem;
  color: var(--color-ink-soft);
  text-align: center;
  padding: 3rem 1rem;
  border: 1px dashed var(--color-line);
  border-radius: var(--radius);
}

/* ==========================================================================
   FAQ
   ========================================================================== */
.faq { padding-bottom: clamp(3rem, 6vw, 4.5rem); }

.faq-list { display: flex; flex-direction: column; gap: 0.75rem; max-width: 760px; }

.faq-item {
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background: var(--color-surface-raised);
  padding: 0.25rem 1.25rem;
}
.faq-item summary {
  cursor: pointer;
  padding: 1rem 0;
  font-weight: 700;
  font-size: 1rem;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.25rem;
  color: var(--color-accent-ink);
  flex-shrink: 0;
}
.faq-item[open] summary::after { content: "−"; }
.faq-item p { padding-bottom: 1.1rem; color: var(--color-ink-soft); font-size: 0.9375rem; }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer { padding-block: clamp(2.5rem, 5vw, 3.5rem) 1.5rem; }

.footer-inner { display: flex; justify-content: space-between; gap: 3rem; flex-wrap: wrap; }

.footer-brand { max-width: 46ch; }
.footer-note { margin-top: 0.9rem; font-size: 0.875rem; color: var(--color-ink-soft); }

.footer-links { display: flex; gap: 1.5rem; flex-wrap: wrap; height: fit-content; }
.footer-links a { text-decoration: none; font-size: 0.9375rem; color: var(--color-ink-soft); }
.footer-links a:hover { color: var(--color-ink); }

.footer-bottom {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-line);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-ink-soft);
}

/* ==========================================================================
   Article (個別記事ページ)
   ========================================================================== */
.article-wrap {
  max-width: 760px;
  margin-inline: auto;
  padding-inline: var(--space-page);
}

.breadcrumb {
  padding-top: 1.75rem;
  font-size: 0.875rem;
}
.breadcrumb a {
  text-decoration: none;
  color: var(--color-ink-soft);
}
.breadcrumb a:hover { color: var(--color-accent-ink); }

.article-hero { padding-block: 1.5rem 2rem; }

.article-icon-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}
.article-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  border: 1px solid var(--color-line);
  background: var(--color-surface);
  object-fit: contain;
  padding: 4px;
}
.article-no {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-accent-ink);
  font-variant-numeric: tabular-nums;
}

.article-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--color-accent-ink);
  background: var(--color-accent-soft);
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius);
}

.article-title { font-size: clamp(2rem, 4.5vw, 2.75rem); }
.article-tagline {
  margin-top: 0.9rem;
  font-size: 1.1875rem;
  font-weight: 700;
  color: var(--color-accent-ink);
}

.article-hero-image {
  margin-top: 1.75rem;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--color-line);
  background: var(--color-surface);
}

.article-cta {
  margin-top: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
}
.article-cta-text { font-size: 0.9375rem; color: var(--color-ink-soft); }
.article-cta-text strong { color: var(--color-ink); }
.article-cta-price {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--color-accent-ink);
  white-space: nowrap;
}

.article-download-note {
  margin-top: 0.75rem;
  font-size: 0.8125rem;
  color: var(--color-ink-soft);
}

.download-gate {
  margin-top: 1.5rem;
  padding: 1.25rem 1.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}
.download-gate-label {
  font-size: 0.875rem;
  color: var(--color-ink-soft);
  margin-bottom: 0.9rem;
}
.download-gate-form {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.download-gate-form input {
  flex: 1 1 180px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background: var(--color-surface-raised);
  color: var(--color-ink);
}
.download-gate-form input:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 1px;
}
.download-gate-form button {
  flex: 1 1 100%;
  font-size: 0.9375rem;
  padding: 0.7rem 1rem;
}
.download-gate-status {
  margin-top: 0.75rem;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-accent-ink);
}

.article-body {
  padding-block: 1rem 3rem;
  font-size: 1.0625rem;
}
.article-body h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-line);
}
.article-body h3:first-child { margin-top: 0; padding-top: 0; border-top: none; }
.article-body h4 {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1.125rem;
  margin-top: 1.75rem;
  margin-bottom: 0.75rem;
}
.article-body p { margin-bottom: 1.1rem; color: var(--color-ink); }
.article-body ol, .article-body ul {
  margin: 0 0 1.25rem;
  padding-left: 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.article-body li { padding-left: 0.2rem; }
.article-body code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: 3px;
  padding: 0.1em 0.4em;
}
.article-body strong { font-weight: 700; }

.article-footer-cta {
  margin-bottom: 3rem;
  padding: 2rem;
  text-align: center;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}
.article-footer-cta h2 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}
.article-footer-cta p {
  color: var(--color-ink-soft);
  margin-bottom: 1.5rem;
}

.article-back-link {
  display: inline-block;
  margin-bottom: 3rem;
  font-size: 0.9375rem;
  text-decoration: none;
  color: var(--color-ink-soft);
}
.article-back-link:hover { color: var(--color-accent-ink); }

/* ==========================================================================
   Legal / Contact pages (特商法・お問い合わせ)
   ========================================================================== */
.legal-page { padding-block: 1.5rem 2rem; }

.legal-title { font-size: clamp(1.75rem, 4vw, 2.5rem); }
.legal-intro {
  margin-top: 1.1rem;
  color: var(--color-ink-soft);
  font-size: 1.0625rem;
  max-width: 60ch;
}

.legal-table {
  margin-top: 2.5rem;
  border-top: 1px solid var(--color-line);
}
.legal-row {
  display: grid;
  grid-template-columns: minmax(160px, 220px) 1fr;
  gap: 1.5rem;
  padding-block: 1.1rem;
  border-bottom: 1px solid var(--color-line);
}
.legal-row dt {
  font-weight: 700;
  font-size: 0.9375rem;
}
.legal-row dd {
  margin: 0;
  color: var(--color-ink-soft);
  font-size: 0.9375rem;
  line-height: 1.8;
}
.legal-row dd a { color: var(--color-accent-ink); }

@media (max-width: 640px) {
  .legal-row { grid-template-columns: 1fr; gap: 0.4rem; }
}

/* Contact form */
.contact-form {
  margin-top: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-width: 560px;
}
.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.form-field label {
  font-weight: 700;
  font-size: 0.9375rem;
}
.form-required, .form-optional {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius);
  margin-left: 0.4rem;
  vertical-align: middle;
}
.form-required { color: var(--color-accent-ink); background: var(--color-accent-soft); }
.form-optional { color: var(--color-ink-soft); background: var(--color-surface); }

.form-field input,
.form-field textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background: var(--color-surface-raised);
  color: var(--color-ink);
  resize: vertical;
}
.form-field input:focus,
.form-field textarea:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 1px;
}

.contact-submit { align-self: flex-start; }
.contact-note {
  font-size: 0.8125rem;
  color: var(--color-ink-soft);
}