/* =============================================================
   kinplug — design system
   Locked per kinplug-vision repo VISION.md
   Navy + Clay + Paper · Noto family · Craftsman voice
   ============================================================= */

:root {
  /* Core palette — do not change without design review */
  --navy:        #1B2B5A;
  --navy-deep:   #0F1A3D;
  --navy-soft:   #E8EBF4;
  --navy-wash:   #F2F4FA;

  --clay:        #C47A42;
  --clay-deep:   #9E5E2E;
  --clay-soft:   #F7EAD9;

  --paper:       #F7F5F0;
  --paper-deep:  #EFEBE2;

  --ink:         #0F1419;
  --ink-soft:    #3A4049;
  --ink-mute:    #6B7280;
  --ink-ghost:   #9CA3AF;

  --rule:        rgba(15, 20, 25, 0.10);
  --rule-mid:    rgba(15, 20, 25, 0.18);
  --rule-strong: rgba(15, 20, 25, 0.32);

  --ok:          #2F7D4F;
  --warn:        #B8873A;
  --err:         #A13636;

  --kt-blue:     #0075C3;
  --kt-blue-soft:#E8F2FA;

  --gutter: clamp(20px, 3vw, 40px);
  --max: 1360px;
  --radius: 4px;
  --radius-lg: 8px;

  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  --fast: 160ms;
  --med:  280ms;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
a { color: inherit; text-decoration: none; }

body {
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-family: 'Noto Sans JP', 'Noto Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 400;
}

html[lang="ja"] body {
  font-feature-settings: 'palt';
  line-height: 1.85;
}

html[lang="en"] body {
  font-family: 'Noto Sans', 'Noto Sans JP', -apple-system, sans-serif;
  line-height: 1.6;
  font-size: 16px;
}

/* Layout */
.wrap {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.wrap-narrow {
  max-width: 900px;
}

.wrap-tight {
  max-width: 680px;
}

/* =============================================================
   LOGO
   ============================================================= */
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.logo-mark {
  display: inline-block;
  width: 28px;
  height: 20px;
  flex-shrink: 0;
}
.logo-mark svg { width: 100%; height: 100%; display: block; }
.logo-word {
  font-weight: 600;
  font-size: 1.0625rem;
  letter-spacing: -0.02em;
  color: var(--navy);
  line-height: 1;
}
.logo-light .logo-word { color: var(--paper); }
.logo-large .logo-mark { width: 40px; height: 28px; }
.logo-large .logo-word { font-size: 1.375rem; }

/* =============================================================
   TOP BAR — trust signals line 1
   ============================================================= */
.topbar {
  background: var(--navy-deep);
  color: var(--paper);
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.6875rem;
  padding: 7px 0;
  letter-spacing: 0.02em;
}
.topbar-inner {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.topbar-left, .topbar-right {
  display: flex;
  gap: 16px;
  align-items: center;
  opacity: 0.85;
}
.topbar a { opacity: 0.85; transition: opacity var(--fast) var(--ease); }
.topbar a:hover { opacity: 1; color: var(--clay); }
.topbar-dot { color: rgba(247, 245, 240, 0.4); }

@media (max-width: 860px) {
  .topbar-inner { font-size: 0.625rem; }
  .topbar-right { display: none; }
}

/* =============================================================
   NAV
   ============================================================= */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247, 245, 240, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--rule);
}
.nav-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 32px;
  padding: 16px 0;
}
.nav-menu {
  display: flex;
  justify-content: center;
  gap: 28px;
}
.nav-menu a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink-soft);
  padding: 6px 0;
  position: relative;
  transition: color var(--fast) var(--ease);
}
.nav-menu a:hover, .nav-menu a.active { color: var(--navy); }
.nav-menu a.active::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -17px;
  height: 2px;
  background: var(--navy);
}

.nav-right { display: flex; align-items: center; gap: 12px; }

/* Lang toggle — first-class */
.lang-toggle {
  display: inline-flex;
  background: var(--paper-deep);
  border-radius: 100px;
  padding: 3px;
  border: 1px solid var(--rule);
}
.lang-toggle a {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 100px;
  color: var(--ink-mute);
  transition: all var(--fast) var(--ease);
  letter-spacing: 0.04em;
}
.lang-toggle a.active {
  background: var(--navy);
  color: var(--paper);
}

/* Mobile nav hamburger */
.nav-toggle {
  display: none;
  padding: 8px;
  cursor: pointer;
  color: var(--ink);
}
.nav-toggle svg { width: 20px; height: 20px; }

@media (max-width: 860px) {
  .nav-menu { display: none; }
  .nav-menu.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--paper);
    padding: 20px var(--gutter);
    gap: 16px;
    border-bottom: 1px solid var(--rule);
    box-shadow: 0 20px 40px -20px rgba(15, 20, 25, 0.2);
  }
  .nav-menu.open a { padding: 8px 0; }
  .nav-toggle { display: inline-flex; }
  .nav-inner { grid-template-columns: auto 1fr auto; }
}

/* =============================================================
   BUTTONS
   ============================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--fast) var(--ease);
  white-space: nowrap;
  font-family: inherit;
}
html[lang="ja"] .btn { font-weight: 500; letter-spacing: 0.02em; }

.btn-primary {
  background: var(--navy);
  color: var(--paper);
  border-color: var(--navy);
}
.btn-primary:hover {
  background: var(--navy-deep);
  border-color: var(--navy-deep);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--rule-mid);
}
.btn-secondary:hover {
  border-color: var(--navy);
  color: var(--navy);
  background: var(--navy-wash);
}

.btn-clay {
  background: var(--clay);
  color: var(--paper);
  border-color: var(--clay);
}
.btn-clay:hover {
  background: var(--clay-deep);
  border-color: var(--clay-deep);
}

.btn-ghost {
  background: transparent;
  color: var(--ink-soft);
  border-color: transparent;
}
.btn-ghost:hover {
  color: var(--navy);
  background: var(--navy-wash);
}

.btn-lg { padding: 14px 26px; font-size: 0.9375rem; }
.btn-sm { padding: 7px 14px; font-size: 0.8125rem; }
.btn .arrow { transition: transform var(--fast) var(--ease); }
.btn:hover .arrow { transform: translateX(3px); }

/* =============================================================
   TYPOGRAPHY
   ============================================================= */
.eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--clay);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}
.eyebrow::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--clay);
}
.eyebrow-center {
  justify-content: center;
}
.eyebrow-center::before, .eyebrow-center::after {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--clay);
}

.h1 {
  font-family: 'Noto Serif JP', 'Noto Serif', Georgia, serif;
  font-size: clamp(2.25rem, 5vw, 4rem);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin-bottom: 24px;
}
html[lang="ja"] .h1 {
  line-height: 1.3;
  letter-spacing: 0.01em;
  font-weight: 700;
}

.h1-accent {
  color: var(--navy);
  position: relative;
  display: inline-block;
}
.h1-accent::after {
  content: '';
  position: absolute;
  left: -2%; right: -2%; bottom: 0.05em;
  height: 0.22em;
  background: var(--clay);
  z-index: -1;
  opacity: 0.4;
}

.h2 {
  font-family: 'Noto Serif JP', 'Noto Serif', Georgia, serif;
  font-size: clamp(1.75rem, 3.2vw, 2.5rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--ink);
}
html[lang="ja"] .h2 { line-height: 1.5; font-weight: 700; }

.h3 {
  font-family: 'Noto Serif JP', 'Noto Serif', Georgia, serif;
  font-size: clamp(1.375rem, 2.2vw, 1.75rem);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.005em;
  color: var(--ink);
}
html[lang="ja"] .h3 { line-height: 1.5; font-weight: 600; }

.lede {
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--ink-soft);
  max-width: 58ch;
}
html[lang="ja"] .lede { line-height: 1.95; font-size: 1rem; }

.prose p {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--ink-soft);
  margin-bottom: 18px;
  max-width: 64ch;
}
.prose p:last-child { margin-bottom: 0; }
html[lang="ja"] .prose p { line-height: 1.95; }

.mono {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--ink-mute);
  letter-spacing: 0.03em;
}

/* =============================================================
   SECTIONS
   ============================================================= */
.sec { padding: clamp(56px, 8vw, 96px) 0; }
.sec-sm { padding: clamp(40px, 5vw, 64px) 0; }
.sec-lg { padding: clamp(72px, 10vw, 120px) 0; }

.sec-paper { background: var(--paper); }
.sec-deep { background: var(--paper-deep); }
.sec-white { background: #FFFFFF; }
.sec-navy {
  background: var(--navy);
  color: var(--paper);
}
.sec-navy .h1, .sec-navy .h2, .sec-navy .h3 { color: var(--paper); }
.sec-navy .lede, .sec-navy .prose p { color: rgba(247, 245, 240, 0.82); }

.sec-head {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: end;
  padding-bottom: 28px;
  margin-bottom: clamp(32px, 5vw, 56px);
  border-bottom: 1px solid var(--rule);
}
.sec-navy .sec-head { border-color: rgba(247, 245, 240, 0.2); }

.sec-head-center {
  display: block;
  text-align: center;
  padding-bottom: 0;
  margin-bottom: clamp(40px, 6vw, 64px);
  border-bottom: 0;
}
.sec-head-center .eyebrow { justify-content: center; }
.sec-head-center .eyebrow::before, .sec-head-center .eyebrow::after {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--clay);
}
.sec-head-center h2 { max-width: 28ch; margin: 0 auto; }

/* =============================================================
   COMPLIANCE / CREDIBILITY STRIP
   ============================================================= */
.credibility {
  background: #FFFFFF;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 36px 0;
}
.credibility-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 32px;
}
@media (max-width: 820px) {
  .credibility-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}
.credibility-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mute);
  white-space: nowrap;
}
.credibility-items {
  display: flex;
  gap: 36px;
  flex-wrap: wrap;
  font-size: 0.875rem;
  color: var(--ink-soft);
  line-height: 1.5;
}
.credibility-item strong {
  color: var(--ink);
  font-weight: 600;
}
.credibility-item .num {
  font-family: 'Noto Serif JP', serif;
  font-weight: 700;
  color: var(--navy);
  font-size: 1.0625rem;
}

/* =============================================================
   KINTONE UI MOCKUPS
   ============================================================= */
.chrome {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #FFFFFF;
  border: 1px solid var(--rule-mid);
  box-shadow:
    0 0 0 1px rgba(15, 20, 25, 0.02),
    0 30px 60px -20px rgba(15, 20, 25, 0.18),
    0 8px 20px -8px rgba(15, 20, 25, 0.08);
}
.chrome-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: #F3F1EC;
  border-bottom: 1px solid var(--rule);
}
.chrome-dots { display: flex; gap: 6px; }
.chrome-dot {
  width: 11px;
  height: 11px;
  border-radius: 100px;
  background: #DDD9CF;
}
.chrome-url {
  flex: 1;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 3px 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  color: var(--ink-mute);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.kt-appbar {
  background: #FFFFFF;
  border-bottom: 1px solid #E5E7EB;
  padding: 0 16px;
  height: 42px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.kt-appname {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  font-weight: 500;
}
.kt-appname::before {
  content: '';
  width: 16px;
  height: 16px;
  background: var(--kt-blue);
  border-radius: 3px;
}
.kt-breadcrumb {
  font-size: 0.75rem;
  color: var(--ink-mute);
}
.kt-tabs {
  margin-left: auto;
  display: flex;
  gap: 2px;
}
.kt-tab {
  padding: 6px 12px;
  font-size: 0.75rem;
  color: var(--ink-mute);
  border-radius: 4px;
}
.kt-tab.active {
  color: var(--kt-blue);
  font-weight: 500;
  background: var(--kt-blue-soft);
}

.kt-record {
  background: #FFFFFF;
  padding: 20px;
}
.kt-record-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: 16px;
  border-bottom: 1px solid #F0F0F0;
  margin-bottom: 18px;
  gap: 16px;
}
.kt-record-title { font-size: 0.9375rem; font-weight: 500; }
.kt-record-sub {
  font-size: 0.75rem;
  color: var(--ink-mute);
  font-family: 'JetBrains Mono', monospace;
  margin-top: 2px;
}
.kt-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.kt-action {
  padding: 5px 10px;
  border: 1px solid var(--rule-mid);
  border-radius: 4px;
  font-size: 0.6875rem;
  color: var(--ink-soft);
  background: #FFFFFF;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.kt-action-primary {
  background: var(--kt-blue);
  color: #FFFFFF;
  border-color: var(--kt-blue);
}
.kt-action-plug {
  background: var(--navy-wash);
  color: var(--navy);
  border-color: rgba(27, 43, 90, 0.2);
  font-weight: 500;
}
.kt-action-plug::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 100px;
  background: var(--clay);
  box-shadow: 0 0 6px var(--clay);
}

.kt-field {
  display: grid;
  grid-template-columns: 110px 1fr;
  padding: 8px 0;
  font-size: 0.8125rem;
  gap: 12px;
  border-bottom: 1px solid #FAFAFA;
}
.kt-field-label {
  color: var(--ink-mute);
  font-size: 0.75rem;
}
.kt-field-val {
  color: var(--ink);
  font-weight: 450;
}
.kt-badge {
  display: inline-flex;
  padding: 2px 8px;
  border-radius: 100px;
  background: var(--clay-soft);
  color: var(--clay-deep);
  font-size: 0.6875rem;
  font-weight: 500;
}
.kt-badge.approved { background: #DCFCE7; color: #15803D; }

.kt-plug-panel {
  background: var(--navy-wash);
  border: 1px solid rgba(27, 43, 90, 0.15);
  border-radius: 6px;
  padding: 14px 16px;
  margin-top: 18px;
}
.kt-plug-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}
.kt-plug-title {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--navy);
}
.kt-plug-title::before {
  content: '';
  width: 12px;
  height: 10px;
  background: var(--navy);
  border-radius: 2px;
  display: inline-block;
}
.kt-plug-count {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  color: var(--navy);
  opacity: 0.65;
}
.kt-plug-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  background: #FFFFFF;
  border-radius: 4px;
  margin-bottom: 4px;
  font-size: 0.75rem;
}
.kt-plug-row:last-child { margin-bottom: 0; }
.kt-plug-icon {
  width: 20px;
  height: 20px;
  background: var(--ok);
  color: #FFFFFF;
  border-radius: 3px;
  display: grid;
  place-items: center;
  font-size: 0.6875rem;
  font-weight: 600;
  flex-shrink: 0;
}
.kt-plug-text { color: var(--ink-soft); flex: 1; }
.kt-plug-text strong { color: var(--ink); font-weight: 500; }
.kt-plug-time {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  color: var(--ink-mute);
  flex-shrink: 0;
}

/* =============================================================
   CALLOUTS on mockups
   ============================================================= */
.callout {
  position: absolute;
  background: var(--navy);
  color: var(--paper);
  padding: 6px 10px;
  border-radius: 3px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  line-height: 1.3;
  white-space: nowrap;
  box-shadow: 0 4px 12px rgba(15, 20, 25, 0.2);
  z-index: 5;
}
.callout-clay { background: var(--clay); }
.callout::before {
  content: '';
  position: absolute;
  width: 28px;
  height: 1px;
  background: currentColor;
  top: 50%;
}
.callout-l { padding-right: 14px; }
.callout-l::before { left: 100%; }
.callout-r { padding-left: 14px; }
.callout-r::before { right: 100%; }
@media (max-width: 1000px) { .callout { display: none; } }

/* =============================================================
   PLUGIN CARDS
   ============================================================= */
.plug-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
@media (max-width: 820px) { .plug-grid { grid-template-columns: 1fr; } }

.plug-grid-hero {
  grid-template-columns: 2fr 1fr 1fr;
  grid-template-rows: auto auto;
}
.plug-grid-hero > :first-child {
  grid-row: span 2;
  grid-column: span 1;
}
@media (max-width: 960px) {
  .plug-grid-hero { grid-template-columns: 1fr; }
  .plug-grid-hero > :first-child { grid-row: auto; }
}

.plug-card {
  background: #FFFFFF;
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--med) var(--ease), transform var(--med) var(--ease);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
}
.plug-card:hover {
  border-color: var(--navy);
  transform: translateY(-2px);
}
.plug-card-hero {
  background: var(--navy);
  color: var(--paper);
  border-color: var(--navy);
}
.plug-card-hero:hover { border-color: var(--clay); }

.plug-screen {
  background: var(--paper-deep);
  padding: 20px 20px 0;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  position: relative;
}
.plug-card-hero .plug-screen { background: var(--navy-deep); }
.plug-screen::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 55%, var(--paper-deep) 100%);
  pointer-events: none;
}
.plug-card-hero .plug-screen::after {
  background: linear-gradient(to bottom, transparent 55%, var(--navy-deep) 100%);
}
.plug-screen .chrome {
  width: 100%;
  box-shadow: 0 16px 32px -16px rgba(15, 20, 25, 0.22), 0 4px 10px -4px rgba(15, 20, 25, 0.1);
}
.plug-screen .chrome-bar { padding: 6px 10px; }
.plug-screen .chrome-dot { width: 7px; height: 7px; }
.plug-screen .chrome-url { font-size: 0.5625rem; padding: 2px 6px; }
.plug-screen .kt-appbar { height: 32px; padding: 0 12px; }
.plug-screen .kt-appname { font-size: 0.6875rem; }
.plug-screen .kt-appname::before { width: 12px; height: 12px; }
.plug-screen .kt-record { padding: 12px; }

.plug-info { padding: 24px; }
.plug-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
  gap: 12px;
}
.plug-name {
  font-family: 'Noto Serif JP', 'Noto Serif', serif;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--navy);
  letter-spacing: -0.01em;
}
.plug-card-hero .plug-name { color: var(--paper); font-size: 1.5rem; }
.plug-desc {
  color: var(--ink-soft);
  font-size: 0.9375rem;
  line-height: 1.65;
  margin-bottom: 18px;
}
.plug-card-hero .plug-desc { color: rgba(247, 245, 240, 0.82); font-size: 1rem; }
html[lang="ja"] .plug-desc { line-height: 1.85; }

.plug-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--ink-mute);
  padding-top: 16px;
  border-top: 1px solid var(--rule);
}
.plug-card-hero .plug-meta {
  color: rgba(247, 245, 240, 0.6);
  border-color: rgba(247, 245, 240, 0.15);
}
.plug-price { color: var(--navy); font-weight: 500; }
.plug-card-hero .plug-price { color: var(--clay); }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 8px;
  border-radius: 100px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.badge-live { background: #DCFCE7; color: #15803D; }
.badge-live::before { content: ''; width: 5px; height: 5px; border-radius: 100px; background: currentColor; }
.badge-beta { background: var(--clay-soft); color: var(--clay-deep); }
.badge-beta::before { content: ''; width: 5px; height: 5px; border-radius: 100px; background: currentColor; }
.badge-plan { border: 1px solid var(--rule-mid); color: var(--ink-mute); }
.plug-card-hero .badge-plan { border-color: rgba(247,245,240,0.3); color: rgba(247,245,240,0.7); }

/* =============================================================
   PRICING — 3 tiers
   ============================================================= */
.tiers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 1160px;
  margin: 0 auto;
}
@media (max-width: 900px) { .tiers { grid-template-columns: 1fr; max-width: 480px; } }

.tier {
  background: #FFFFFF;
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: relative;
}
.tier-featured {
  border: 2px solid var(--navy);
  padding: 35px 31px;
  box-shadow: 0 24px 48px -20px rgba(15, 20, 25, 0.15);
}
.tier-ribbon {
  position: absolute;
  top: -11px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--clay);
  color: var(--paper);
  padding: 4px 12px;
  border-radius: 100px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}

.tier-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  color: var(--clay);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 500;
}
.tier-name {
  font-family: 'Noto Serif JP', 'Noto Serif', serif;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--navy);
  margin-top: 6px;
  letter-spacing: -0.01em;
}
.tier-desc {
  font-size: 0.9375rem;
  color: var(--ink-soft);
  line-height: 1.6;
  min-height: 52px;
}
html[lang="ja"] .tier-desc { line-height: 1.85; min-height: 64px; }

.tier-price-block { padding-top: 4px; }
.tier-prices {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}
.tier-price-jpy {
  font-family: 'Noto Serif JP', 'Noto Serif', serif;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.02em;
  line-height: 1;
}
.tier-price-jpy small {
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--ink-mute);
  margin-left: 4px;
  letter-spacing: 0;
}
.tier-price-usd {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8125rem;
  color: var(--ink-mute);
  padding-left: 10px;
  border-left: 1px solid var(--rule);
}
.tier-tax {
  font-size: 0.75rem;
  color: var(--ink-mute);
  font-family: 'JetBrains Mono', monospace;
  margin-top: 8px;
}
.tier-annual {
  font-size: 0.8125rem;
  color: var(--clay-deep);
  margin-top: 8px;
  font-weight: 500;
}

.tier-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 8px 0;
  flex: 1;
}
.tier-feature {
  font-size: 0.9375rem;
  line-height: 1.5;
  padding-left: 22px;
  position: relative;
  color: var(--ink-soft);
}
.tier-feature::before {
  content: '';
  position: absolute;
  left: 0; top: 0.55em;
  width: 12px;
  height: 1px;
  background: var(--clay);
}
.tier-feature strong {
  color: var(--ink);
  font-weight: 600;
}
html[lang="ja"] .tier-feature { line-height: 1.7; }

.tier .btn { width: 100%; }

/* =============================================================
   COMPARISON TABLE
   ============================================================= */
.compare-wrap {
  background: #FFFFFF;
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 40px -20px rgba(15, 20, 25, 0.12);
}
.compare {
  width: 100%;
  border-collapse: collapse;
}
.compare th, .compare td {
  padding: 18px 20px;
  text-align: left;
  border-bottom: 1px solid var(--rule);
  font-size: 0.875rem;
  line-height: 1.5;
}
.compare thead th {
  background: var(--paper-deep);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
  font-weight: 500;
  border-bottom: 2px solid var(--rule-mid);
}
.compare .vendor { font-weight: 500; color: var(--ink); }
.compare .vendor-sub {
  font-size: 0.75rem;
  color: var(--ink-mute);
  margin-top: 2px;
}
.compare .price {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 500;
  color: var(--ink);
  white-space: nowrap;
}
.compare .price-big {
  font-family: 'Noto Serif JP', serif;
  font-weight: 700;
  color: var(--clay);
  font-size: 1.0625rem;
}
.compare tr.kinplug-row {
  background: linear-gradient(90deg, rgba(196, 122, 66, 0.06) 0%, rgba(27, 43, 90, 0.04) 100%);
  border-left: 3px solid var(--clay);
}
.compare tr.kinplug-row td { font-weight: 500; }

.check { color: var(--ok); font-weight: 600; }
.cross { color: var(--err); font-weight: 600; }
.partial { color: var(--clay-deep); font-weight: 600; }

@media (max-width: 720px) {
  .compare-wrap { overflow-x: auto; }
  .compare { min-width: 680px; }
}

/* =============================================================
   FAQ
   ============================================================= */
.faq-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: clamp(32px, 5vw, 64px);
}
@media (max-width: 820px) { .faq-grid { grid-template-columns: 1fr; } }

.faq-list { display: flex; flex-direction: column; }
.faq-item {
  padding: 24px 0;
  border-bottom: 1px solid var(--rule);
}
.faq-item:first-child { padding-top: 0; }
.faq-item:last-child { border-bottom: 0; }
.faq-q {
  font-family: 'Noto Serif JP', 'Noto Serif', serif;
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.005em;
  color: var(--navy);
  margin-bottom: 12px;
  display: flex;
  gap: 12px;
  align-items: baseline;
}
.faq-q-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--clay);
  flex-shrink: 0;
}
.faq-a {
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--ink-soft);
  padding-left: 36px;
}
html[lang="ja"] .faq-a { line-height: 1.95; }
@media (max-width: 540px) { .faq-a { padding-left: 0; } }

/* =============================================================
   COMPANY 会社概要 block
   ============================================================= */
.company-card {
  background: #FFFFFF;
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.company-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 24px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--rule);
  font-size: 0.9375rem;
  line-height: 1.5;
}
.company-row:last-child { border-bottom: 0; }
@media (max-width: 540px) {
  .company-row { grid-template-columns: 1fr; gap: 4px; padding: 14px 20px; }
}
.company-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-mute);
  font-weight: 500;
  padding-top: 2px;
}
.company-val { color: var(--ink); font-weight: 450; }
.company-val .sub {
  color: var(--ink-mute);
  font-size: 0.875rem;
  display: block;
  margin-top: 2px;
}

/* =============================================================
   OAUTH URGENCY BANNER
   ============================================================= */
.urgency-banner {
  background: linear-gradient(135deg, var(--clay-soft) 0%, var(--paper-deep) 100%);
  border-top: 1px solid rgba(196, 122, 66, 0.25);
  border-bottom: 1px solid rgba(196, 122, 66, 0.25);
  padding: 28px 0;
}
.urgency-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 24px;
  align-items: center;
}
@media (max-width: 820px) {
  .urgency-inner { grid-template-columns: 1fr; text-align: left; }
}
.urgency-pulse {
  width: 12px;
  height: 12px;
  border-radius: 100px;
  background: var(--clay);
  box-shadow: 0 0 0 4px rgba(196, 122, 66, 0.2);
  animation: pulse 2s var(--ease) infinite;
  flex-shrink: 0;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(196, 122, 66, 0.2); }
  50% { box-shadow: 0 0 0 10px rgba(196, 122, 66, 0.05); }
}
.urgency-text {
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--ink);
}
.urgency-text strong {
  color: var(--clay-deep);
  font-family: 'Noto Serif JP', serif;
  font-weight: 700;
  font-size: 1rem;
}

/* =============================================================
   NATIVE CONFIG (moat demonstration)
   ============================================================= */
.native-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 40px;
}
@media (max-width: 820px) { .native-compare { grid-template-columns: 1fr; } }

.native-col {
  background: #FFFFFF;
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  padding: 28px;
}
.native-col-good {
  border: 2px solid var(--navy);
  padding: 27px;
  position: relative;
}
.native-col-good::before {
  content: 'kinplug';
  position: absolute;
  top: -10px;
  right: 24px;
  background: var(--navy);
  color: var(--paper);
  padding: 3px 10px;
  border-radius: 100px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.native-col-bad::before {
  content: attr(data-vendor);
  position: absolute;
  top: -10px;
  right: 24px;
  background: var(--ink-mute);
  color: var(--paper);
  padding: 3px 10px;
  border-radius: 100px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.native-col-bad { position: relative; }
.native-steps {
  list-style: none;
  counter-reset: step;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 20px;
}
.native-steps li {
  counter-increment: step;
  padding: 10px 14px;
  background: var(--paper);
  border-radius: var(--radius);
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink-soft);
}
.native-steps li::before {
  content: counter(step);
  width: 22px;
  height: 22px;
  border-radius: 100px;
  background: var(--navy);
  color: var(--paper);
  display: grid;
  place-items: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  font-weight: 700;
  flex-shrink: 0;
}
.native-col-bad .native-steps li::before { background: var(--ink-mute); }
.native-summary {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--ink-mute);
  letter-spacing: 0.03em;
  padding-top: 16px;
  margin-top: 16px;
  border-top: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  gap: 12px;
}
.native-summary strong { color: var(--navy); font-weight: 600; }
.native-col-bad .native-summary strong { color: var(--err); }

/* =============================================================
   CTA
   ============================================================= */
.cta-wrap {
  background: var(--navy);
  color: var(--paper);
  padding: clamp(56px, 9vw, 96px) var(--gutter);
  text-align: center;
}
.cta-title {
  font-family: 'Noto Serif JP', 'Noto Serif', serif;
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
  max-width: 26ch;
  margin: 16px auto;
}
html[lang="ja"] .cta-title { line-height: 1.55; font-weight: 700; }
.cta-desc {
  font-size: 1rem;
  color: rgba(247, 245, 240, 0.8);
  max-width: 52ch;
  margin: 20px auto 32px;
  line-height: 1.75;
}
html[lang="en"] .cta-desc { line-height: 1.6; }
.cta-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* =============================================================
   FOOTER — 特定商取引法 compliance
   ============================================================= */
.footer {
  background: var(--navy-deep);
  color: var(--paper);
  padding: clamp(48px, 6vw, 72px) 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(4, 1fr);
  gap: 32px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(247, 245, 240, 0.12);
}
@media (max-width: 960px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; gap: 28px; } }

.footer-desc {
  font-size: 0.875rem;
  line-height: 1.7;
  color: rgba(247, 245, 240, 0.65);
  margin-top: 16px;
  max-width: 32ch;
}
.footer-col h4 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(247, 245, 240, 0.5);
  margin-bottom: 14px;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col a {
  font-size: 0.875rem;
  color: rgba(247, 245, 240, 0.85);
  transition: color var(--fast) var(--ease);
}
.footer-col a:hover { color: var(--clay); }

.footer-legal {
  padding: 28px 0;
  border-bottom: 1px solid rgba(247, 245, 240, 0.12);
  font-size: 0.8125rem;
  color: rgba(247, 245, 240, 0.7);
  line-height: 1.8;
}
.footer-legal-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
@media (max-width: 680px) { .footer-legal-grid { grid-template-columns: 1fr; } }
.footer-legal h5 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(247, 245, 240, 0.5);
  margin-bottom: 10px;
}
.footer-legal strong { color: var(--paper); font-weight: 500; }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  flex-wrap: wrap;
  gap: 16px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: rgba(247, 245, 240, 0.45);
}
.footer-bottom-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
.footer-bottom-links a:hover { color: var(--clay); }

/* =============================================================
   UTILITIES
   ============================================================= */
.divider {
  height: 1px;
  background: var(--rule);
  border: 0;
  margin: 0;
}
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mt-sm { margin-top: 16px; }
.mt-md { margin-top: 32px; }
.mt-lg { margin-top: 48px; }
.mb-0 { margin-bottom: 0; }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.gap-sm { gap: 12px; }
.gap-md { gap: 24px; }

:focus-visible {
  outline: 2px solid var(--clay);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* =============================================================
   MISC
   ============================================================= */
.content-prose {
  max-width: 68ch;
  margin: 0 auto;
}
.content-prose h2 {
  font-family: 'Noto Serif JP', 'Noto Serif', serif;
  font-size: 1.625rem;
  font-weight: 600;
  color: var(--navy);
  margin-top: 48px;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}
.content-prose h2:first-child { margin-top: 0; }
.content-prose h3 {
  font-family: 'Noto Serif JP', 'Noto Serif', serif;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--ink);
  margin-top: 32px;
  margin-bottom: 14px;
}
.content-prose p {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--ink-soft);
  margin-bottom: 20px;
}
html[lang="ja"] .content-prose p { line-height: 1.95; }
.content-prose ul, .content-prose ol {
  margin: 0 0 20px 20px;
  padding-left: 16px;
}
.content-prose li {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--ink-soft);
  margin-bottom: 10px;
}
.content-prose a {
  color: var(--navy);
  border-bottom: 1px solid currentColor;
  transition: color var(--fast);
}
.content-prose a:hover { color: var(--clay-deep); }
.content-prose code {
  background: var(--paper-deep);
  padding: 2px 6px;
  border-radius: 3px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.875em;
}
.content-prose blockquote {
  border-left: 3px solid var(--clay);
  padding: 8px 20px;
  margin: 24px 0;
  color: var(--ink-soft);
  font-style: italic;
}

/* =============================================================
   REFINEMENT PASS — hero composition, typography presence,
   vertical rhythm. Appended after v2 review showed
   polite-instead-of-confident issue.
   ============================================================= */

/* Bigger, more confident H1 */
.h1 {
  font-size: clamp(2.5rem, 5.5vw, 4rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
  text-wrap: balance;
  word-break: keep-all;
}
html[lang="ja"] .h1 {
  line-height: 1.3;
  letter-spacing: 0.005em;
  word-break: normal;
  line-break: strict;
}

/* Generous section padding — the paper needs breathing room */
.sec { padding: clamp(80px, 10vw, 140px) 0; }
.sec-sm { padding: clamp(56px, 7vw, 88px) 0; }
.sec-lg { padding: clamp(96px, 12vw, 168px) 0; }

/* Lede: more presence */
.lede {
  font-size: 1.125rem;
  line-height: 1.7;
  max-width: 52ch;
  color: var(--ink-soft);
}
html[lang="ja"] .lede {
  font-size: 1.0625rem;
  line-height: 1.95;
  max-width: 42ch;
}

/* Hero-specific — widens text, tightens mockup, adds drama */
.hero-grid-v2 {
  display: grid;
  grid-template-columns: 6fr 5fr;
  gap: clamp(48px, 6vw, 96px);
  align-items: center;
  min-height: 70vh;
}
@media (max-width: 1000px) {
  .hero-grid-v2 {
    grid-template-columns: 1fr !important;
    gap: 56px !important;
    min-height: auto;
  }
}

.hero-mockup-v2 {
  position: relative;
  perspective: 1400px;
}
.hero-mockup-v2 .chrome {
  transform: perspective(1400px) rotateY(-2deg) rotateX(0.5deg);
  transform-origin: 50% 50%;
  box-shadow:
    0 0 0 1px rgba(15, 20, 25, 0.04),
    0 50px 100px -40px rgba(15, 20, 25, 0.28),
    0 20px 40px -15px rgba(15, 20, 25, 0.12),
    0 -8px 30px -10px rgba(196, 122, 66, 0.08);
  transition: transform 500ms var(--ease);
}
.hero-mockup-v2 .chrome:hover {
  transform: perspective(1400px) rotateY(-1deg) rotateX(0.3deg) translateY(-4px);
}

/* Soft glow behind mockup */
.hero-mockup-v2::before {
  content: '';
  position: absolute;
  left: -8%;
  top: 10%;
  right: 8%;
  bottom: 10%;
  background: radial-gradient(ellipse at center,
    rgba(196, 122, 66, 0.08) 0%,
    rgba(27, 43, 90, 0.05) 40%,
    transparent 70%);
  filter: blur(60px);
  z-index: -1;
  pointer-events: none;
}

/* Confident stats strip */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, auto);
  gap: 0;
  margin-top: 56px;
  padding-top: 36px;
  border-top: 1px solid var(--rule);
}
.hero-stat {
  padding: 0 32px;
  border-right: 1px solid var(--rule);
}
.hero-stat:first-child { padding-left: 0; }
.hero-stat:last-child { padding-right: 0; border-right: 0; }
.hero-stat-num {
  font-family: 'Noto Serif JP', 'Noto Serif', serif;
  font-size: 3rem;
  font-weight: 700;
  color: var(--navy);
  line-height: 1;
  letter-spacing: -0.02em;
}
.hero-stat-num small {
  font-size: 0.5em;
  color: var(--ink-mute);
  font-weight: 400;
  margin-left: 3px;
  letter-spacing: 0;
}
.hero-stat-label {
  font-size: 0.8125rem;
  color: var(--ink-mute);
  margin-top: 10px;
  line-height: 1.4;
}

/* Subtle warm gradient on hero paper */
.hero-section {
  background:
    radial-gradient(ellipse 80% 60% at 85% 40%, rgba(196, 122, 66, 0.035) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 15% 60%, rgba(27, 43, 90, 0.025) 0%, transparent 50%),
    var(--paper);
}

/* Tighten eyebrow — more refined */
.eyebrow {
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  margin-bottom: 24px;
}
.eyebrow::before { width: 28px; }

/* Bigger CTA buttons in hero */
.hero-cta-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 36px;
}
.btn-lg {
  padding: 15px 28px;
  font-size: 0.9375rem;
}

/* Tighten the pricing section — more presence */
.sec-head-center h2 { max-width: 26ch; margin: 0 auto; text-wrap: balance; }
html[lang="ja"] .sec-head-center h2 { max-width: none; }

/* More dramatic credibility */
.credibility {
  padding: 44px 0;
  background: linear-gradient(180deg, #FFFFFF 0%, #FCFBF8 100%);
}
.credibility-items { gap: 44px; }
.credibility-item .num {
  font-size: 1.25rem;
  letter-spacing: -0.01em;
}

/* CTA block more confident */
.cta-wrap {
  padding: clamp(80px, 11vw, 140px) var(--gutter);
  background:
    radial-gradient(ellipse 60% 80% at 50% 0%, rgba(196, 122, 66, 0.12) 0%, transparent 60%),
    var(--navy);
}
.cta-title { font-size: clamp(2rem, 4vw, 3.25rem); }


/* ==============================================
   ARTICLE TYPOGRAPHY — long-form reading optimized
   ============================================== */
.article-prose { max-width: 68ch; margin: 0 auto; }
.article-prose > * + * { margin-top: 1.5em; }
.article-prose h2 {
  font-family: 'Noto Serif JP', serif;
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  color: var(--navy);
  font-weight: 700;
  line-height: 1.3;
  margin-top: 3em;
  margin-bottom: 0.7em;
  letter-spacing: -0.01em;
}
.article-prose h3 {
  font-family: 'Noto Serif JP', serif;
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  color: var(--navy);
  font-weight: 700;
  line-height: 1.35;
  margin-top: 2.2em;
  margin-bottom: 0.5em;
}
.article-prose p {
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--ink-soft);
}
html[lang="ja"] .article-prose p {
  font-size: 1rem;
  line-height: 1.95;
}
.article-prose ul, .article-prose ol {
  padding-left: 1.5em;
  line-height: 1.85;
  color: var(--ink-soft);
}
.article-prose li {
  margin-bottom: 0.6em;
  padding-left: 0.25em;
}
.article-prose li::marker { color: var(--clay); }
.article-prose blockquote {
  border-left: 3px solid var(--clay);
  padding: 0.4em 0 0.4em 1.5em;
  font-family: 'Noto Serif JP', serif;
  font-style: italic;
  color: var(--ink);
  font-size: 1.125rem;
  line-height: 1.7;
  margin: 2em 0;
}
.article-prose code {
  font-family: 'JetBrains Mono', monospace;
  background: var(--paper-deep);
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 0.875em;
  color: var(--ink);
}
.article-prose pre {
  background: var(--ink);
  color: var(--paper);
  padding: 20px 24px;
  border-radius: 6px;
  overflow-x: auto;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8125rem;
  line-height: 1.7;
}
.article-prose pre code { background: transparent; padding: 0; color: inherit; }
.article-prose a {
  color: var(--navy);
  border-bottom: 1px solid var(--navy);
  text-decoration: none;
  transition: color 150ms;
}
.article-prose a:hover { color: var(--clay); border-bottom-color: var(--clay); }
.article-prose hr {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 3em 0;
}
.article-prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
  margin: 2em 0;
}
.article-prose th, .article-prose td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--rule);
}
.article-prose th {
  font-weight: 600;
  color: var(--navy);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  background: var(--paper-deep);
}

.article-prose .callout-box {
  background: var(--paper-deep);
  padding: 28px 32px;
  border-left: 3px solid var(--clay);
  border-radius: 0 6px 6px 0;
  margin: 2em 0;
}
.article-prose .callout-box h4 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--clay);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 10px;
  font-weight: 500;
}
.article-prose .callout-box p { margin: 0; }




/* ==============================================
   ARTICLE TYPOGRAPHY — long-form reading optimized
   ============================================== */
.article-prose { max-width: 68ch; margin: 0 auto; }
.article-prose > * + * { margin-top: 1.5em; }
.article-prose h2 {
  font-family: 'Noto Serif JP', serif;
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  color: var(--navy);
  font-weight: 700;
  line-height: 1.3;
  margin-top: 3em;
  margin-bottom: 0.7em;
  letter-spacing: -0.01em;
}
.article-prose h3 {
  font-family: 'Noto Serif JP', serif;
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  color: var(--navy);
  font-weight: 700;
  line-height: 1.35;
  margin-top: 2.2em;
  margin-bottom: 0.5em;
}
.article-prose p {
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--ink-soft);
}
html[lang="ja"] .article-prose p {
  font-size: 1rem;
  line-height: 1.95;
}
.article-prose ul, .article-prose ol {
  padding-left: 1.5em;
  line-height: 1.85;
  color: var(--ink-soft);
}
.article-prose li {
  margin-bottom: 0.6em;
  padding-left: 0.25em;
}
.article-prose li::marker { color: var(--clay); }
.article-prose blockquote {
  border-left: 3px solid var(--clay);
  padding: 0.4em 0 0.4em 1.5em;
  font-family: 'Noto Serif JP', serif;
  font-style: italic;
  color: var(--ink);
  font-size: 1.125rem;
  line-height: 1.7;
  margin: 2em 0;
}
.article-prose code {
  font-family: 'JetBrains Mono', monospace;
  background: var(--paper-deep);
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 0.875em;
  color: var(--ink);
}
.article-prose pre {
  background: var(--ink);
  color: var(--paper);
  padding: 20px 24px;
  border-radius: 6px;
  overflow-x: auto;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8125rem;
  line-height: 1.7;
}
.article-prose pre code { background: transparent; padding: 0; color: inherit; }
.article-prose a {
  color: var(--navy);
  border-bottom: 1px solid var(--navy);
  text-decoration: none;
  transition: color 150ms;
}
.article-prose a:hover { color: var(--clay); border-bottom-color: var(--clay); }
.article-prose hr {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 3em 0;
}
.article-prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
  margin: 2em 0;
}
.article-prose th, .article-prose td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--rule);
}
.article-prose th {
  font-weight: 600;
  color: var(--navy);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  background: var(--paper-deep);
}

.article-prose .callout-box {
  background: var(--paper-deep);
  padding: 28px 32px;
  border-left: 3px solid var(--clay);
  border-radius: 0 6px 6px 0;
  margin: 2em 0;
}
.article-prose .callout-box h4 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--clay);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 10px;
  font-weight: 500;
}
.article-prose .callout-box p { margin: 0; }


/* ==============================================
   ARTICLE TYPOGRAPHY — long-form reading optimized
   ============================================== */
.article-prose { max-width: 68ch; margin: 0 auto; }
.article-prose > * + * { margin-top: 1.5em; }
.article-prose h2 {
  font-family: 'Noto Serif JP', serif;
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  color: var(--navy);
  font-weight: 700;
  line-height: 1.3;
  margin-top: 3em;
  margin-bottom: 0.7em;
  letter-spacing: -0.01em;
}
.article-prose h3 {
  font-family: 'Noto Serif JP', serif;
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  color: var(--navy);
  font-weight: 700;
  line-height: 1.35;
  margin-top: 2.2em;
  margin-bottom: 0.5em;
}
.article-prose p {
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--ink-soft);
}
html[lang="ja"] .article-prose p {
  font-size: 1rem;
  line-height: 1.95;
}
.article-prose ul, .article-prose ol {
  padding-left: 1.5em;
  line-height: 1.85;
  color: var(--ink-soft);
}
.article-prose li {
  margin-bottom: 0.6em;
  padding-left: 0.25em;
}
.article-prose li::marker { color: var(--clay); }
.article-prose blockquote {
  border-left: 3px solid var(--clay);
  padding: 0.4em 0 0.4em 1.5em;
  font-family: 'Noto Serif JP', serif;
  font-style: italic;
  color: var(--ink);
  font-size: 1.125rem;
  line-height: 1.7;
  margin: 2em 0;
}
.article-prose code {
  font-family: 'JetBrains Mono', monospace;
  background: var(--paper-deep);
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 0.875em;
  color: var(--ink);
}
.article-prose pre {
  background: var(--ink);
  color: var(--paper);
  padding: 20px 24px;
  border-radius: 6px;
  overflow-x: auto;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8125rem;
  line-height: 1.7;
}
.article-prose pre code { background: transparent; padding: 0; color: inherit; }
.article-prose a {
  color: var(--navy);
  border-bottom: 1px solid var(--navy);
  text-decoration: none;
  transition: color 150ms;
}
.article-prose a:hover { color: var(--clay); border-bottom-color: var(--clay); }
.article-prose hr {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 3em 0;
}
.article-prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
  margin: 2em 0;
}
.article-prose th, .article-prose td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--rule);
}
.article-prose th {
  font-weight: 600;
  color: var(--navy);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  background: var(--paper-deep);
}

.article-prose .callout-box {
  background: var(--paper-deep);
  padding: 28px 32px;
  border-left: 3px solid var(--clay);
  border-radius: 0 6px 6px 0;
  margin: 2em 0;
}
.article-prose .callout-box h4 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--clay);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 10px;
  font-weight: 500;
}
.article-prose .callout-box p { margin: 0; }


/* ==============================================
   ARTICLE TYPOGRAPHY — long-form reading optimized
   ============================================== */
.article-prose { max-width: 68ch; margin: 0 auto; }
.article-prose > * + * { margin-top: 1.5em; }
.article-prose h2 {
  font-family: 'Noto Serif JP', serif;
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  color: var(--navy);
  font-weight: 700;
  line-height: 1.3;
  margin-top: 3em;
  margin-bottom: 0.7em;
  letter-spacing: -0.01em;
}
.article-prose h3 {
  font-family: 'Noto Serif JP', serif;
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  color: var(--navy);
  font-weight: 700;
  line-height: 1.35;
  margin-top: 2.2em;
  margin-bottom: 0.5em;
}
.article-prose p {
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--ink-soft);
}
html[lang="ja"] .article-prose p {
  font-size: 1rem;
  line-height: 1.95;
}
.article-prose ul, .article-prose ol {
  padding-left: 1.5em;
  line-height: 1.85;
  color: var(--ink-soft);
}
.article-prose li {
  margin-bottom: 0.6em;
  padding-left: 0.25em;
}
.article-prose li::marker { color: var(--clay); }
.article-prose blockquote {
  border-left: 3px solid var(--clay);
  padding: 0.4em 0 0.4em 1.5em;
  font-family: 'Noto Serif JP', serif;
  font-style: italic;
  color: var(--ink);
  font-size: 1.125rem;
  line-height: 1.7;
  margin: 2em 0;
}
.article-prose code {
  font-family: 'JetBrains Mono', monospace;
  background: var(--paper-deep);
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 0.875em;
  color: var(--ink);
}
.article-prose pre {
  background: var(--ink);
  color: var(--paper);
  padding: 20px 24px;
  border-radius: 6px;
  overflow-x: auto;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8125rem;
  line-height: 1.7;
}
.article-prose pre code { background: transparent; padding: 0; color: inherit; }
.article-prose a {
  color: var(--navy);
  border-bottom: 1px solid var(--navy);
  text-decoration: none;
  transition: color 150ms;
}
.article-prose a:hover { color: var(--clay); border-bottom-color: var(--clay); }
.article-prose hr {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 3em 0;
}
.article-prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
  margin: 2em 0;
}
.article-prose th, .article-prose td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--rule);
}
.article-prose th {
  font-weight: 600;
  color: var(--navy);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  background: var(--paper-deep);
}

.article-prose .callout-box {
  background: var(--paper-deep);
  padding: 28px 32px;
  border-left: 3px solid var(--clay);
  border-radius: 0 6px 6px 0;
  margin: 2em 0;
}
.article-prose .callout-box h4 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--clay);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 10px;
  font-weight: 500;
}
.article-prose .callout-box p { margin: 0; }