/* ──────────────────────────────────────────────
   JITSUIN — Digital Proof of Personhood
   Style System
   ────────────────────────────────────────────── */

:root {
  --gray-dark:   #3a3a3a;
  --gray-mid:    #5a5a5a;
  --gray-light:  #8a8a8a;
  --gray-pale:   #c8c8c8;
  --gray-bg:     #f5f5f5;
  --white:       #ffffff;
  --off-white:   #fafaf8;

  --teal:        #4a9b9b;
  --teal-deep:   #2d7a7a;
  --teal-light:  #6dbaba;
  --teal-pale:   #e0f0f0;
  --teal-ghost:  rgba(74, 155, 155, 0.08);

  --serif:       'Cormorant Garamond', 'Noto Serif JP', Georgia, serif;
  --jp:          'Noto Serif JP', 'Cormorant Garamond', serif;
  --sans:        'DM Sans', system-ui, sans-serif;

  --transition:  cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
}

/* ─── RESET ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--sans);
  background: var(--off-white);
  color: var(--gray-dark);
  line-height: 1.65;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ─── LANGUAGE BAR ─── */
.lang-bar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 2rem;
  background: rgba(250,250,248,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(74,155,155,0.12);
}
.lang-btn {
  background: none; border: none; cursor: pointer;
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--gray-light);
  padding: 0.25rem 0.4rem;
  border-radius: 3px;
  transition: color 0.2s, background 0.2s;
}
.lang-btn:hover, .lang-btn.active {
  color: var(--teal-deep);
  background: var(--teal-ghost);
}
.lang-sep { color: var(--gray-pale); font-size: 0.7rem; }

/* ─── HERO SECTION ─── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding-top: 2rem;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: var(--gray-dark);
  z-index: 0;
}
.hero-noise {
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.035'/%3E%3C/svg%3E");
  opacity: 0.6;
  pointer-events: none;
}
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(74,155,155,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74,155,155,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

/* ─── SITE HEADER ─── */
.site-header {
  position: relative; z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 4rem;
  margin-top: 2rem;
}
.logo-mark {
  font-family: var(--jp);
  font-size: 1.8rem;
  font-weight: 400;
  color: var(--teal-light);
  letter-spacing: 0.05em;
  cursor: default;
}
.nav-links {
  display: flex;
  gap: 2.5rem;
}
.nav-links a {
  font-size: 0.95rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  transition: color 0.25s;
}
.nav-links a:hover { color: var(--teal-light); }

/* ─── HERO CONTENT ─── */
.hero-content {
  position: relative; z-index: 5;
  flex: 1;
  display: flex;
  align-items: center;
  gap: 5rem;
  padding: 4rem 4rem 3rem;
  max-width: 1300px;
  margin: 0 auto;
  width: 100%;
}
.hero-left { flex: 1; max-width: 560px; }

.hero-eyebrow {
  font-size: 1rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.2s forwards;
}
.hero-title {
  font-family: var(--serif);
  font-size: clamp(3rem, 5.5vw, 5.5rem);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--white);
  margin-bottom: 1.5rem;
}
.hero-title-line {
  display: block;
  opacity: 0;
  animation: fadeUp 0.9s var(--ease-out) 0.35s forwards;
}
.hero-title-line:nth-child(2) {
  animation-delay: 0.5s;
}
.hero-title-line.accent {
  color: var(--teal-light);
  font-style: italic;
}
.hero-sub {
  font-size: 1.05rem;
  line-height: 1.75;
  color: rgba(255,255,255,0.6);
  max-width: 440px;
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.65s forwards;
}
.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.8s forwards;
}
.hero-free {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.35);
  letter-spacing: 0.04em;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.95s forwards;
}

/* ─── BUTTONS ─── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  background: var(--teal);
  color: var(--white);
  font-family: var(--sans);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  border-radius: 2px;
  transition: background 0.25s, transform 0.2s;
}
.btn-primary:hover { background: var(--teal-deep); transform: translateY(-1px); }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  background: transparent;
  color: rgba(255,255,255,0.6);
  border: 1px solid rgba(255,255,255,0.2);
  font-family: var(--sans);
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  border-radius: 2px;
  transition: border-color 0.25s, color 0.25s, transform 0.2s;
}
.btn-ghost:hover {
  border-color: var(--teal);
  color: var(--teal-light);
  transform: translateY(-1px);
}

/* ─── HERO SEAL ─── */
.hero-right {
  flex: 0 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  animation: fadeIn 1.2s var(--ease-out) 0.6s forwards;
}
.seal-hero-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.seal-aura {
  position: absolute;
  width: 380px; height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(74,155,155,0.15) 0%, transparent 70%);
  animation: pulse-aura 4s ease-in-out infinite;
  pointer-events: none;
}
@keyframes pulse-aura {
  0%, 100% { transform: scale(1); opacity: 0.6; }
  50% { transform: scale(1.08); opacity: 1; }
}

.seal-card {
  position: relative;
  width: 280px; height: 280px;
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  animation: seal-enter 1s var(--ease-out) 0.8s both, seal-rotate 20s linear infinite;
  cursor: default;
}
@keyframes seal-enter {
  from { opacity: 0; transform: scale(0.85) rotate(-5deg); }
  to   { opacity: 1; transform: scale(1) rotate(0deg); }
}
@keyframes seal-rotate {
  0% { transform: rotate(0deg); }
  25% { transform: rotate(0.8deg); }
  75% { transform: rotate(-0.8deg); }
  100% { transform: rotate(0deg); }
}

.seal-color {
  background: transparent;
  border: 1.5px solid rgba(74,155,155,0.5);
  box-shadow:
    0 0 40px rgba(74,155,155,0.15),
    inset 0 0 40px rgba(74,155,155,0.05);
}

.seal-kanji-grid {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  justify-content: center;
  max-width: 200px;
}
.seal-kanji-grid .k {
  font-family: var(--jp);
  font-size: 2.8rem;
  font-weight: 300;
  color: var(--teal-light);
  line-height: 1;
  text-shadow: 0 0 20px rgba(74,155,155,0.4);
  transition: transform 0.3s;
}
.seal-kanji-grid .k:hover { transform: scale(1.15); }

.seal-code {
  font-family: 'Courier New', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.3);
  text-align: center;
}
.seal-verified-badge {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
}
.seal-verified-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--teal);
  animation: blink-dot 2s ease-in-out infinite;
}
@keyframes blink-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.seal-float-tag {
  position: absolute;
  bottom: -2.5rem;
  right: -1rem;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.3);
  font-style: italic;
}

/* ─── HERO SCROLL HINT ─── */
.hero-scroll-hint {
  position: relative; z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding-bottom: 2.5rem;
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.25);
  opacity: 0;
  animation: fadeIn 1s 1.5s forwards;
}
.scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, rgba(74,155,155,0.6), transparent);
  animation: scroll-pulse 2s ease-in-out infinite;
}
@keyframes scroll-pulse {
  0% { transform: scaleY(0); transform-origin: top; opacity: 0; }
  50% { transform: scaleY(1); opacity: 1; }
  100% { transform: scaleY(0); transform-origin: bottom; opacity: 0; }
}

/* ─── SECTION BASE ─── */
.section {
  padding: 8rem 0;
}
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 4rem;
}
.section-label {
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.section-label::before {
  content: '';
  display: block;
  width: 32px; height: 1px;
  background: var(--teal);
  opacity: 0.5;
}
.section-title {
  font-family: var(--serif);
  font-size: clamp(2rem, 3.5vw, 3.2rem);
  font-weight: 300;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--gray-dark);
  margin-bottom: 1.5rem;
  /*max-width: 640px;*/
}
.section-sub {
  font-size: 1.05rem;
  color: var(--gray-mid);
  max-width: 500px;
  margin-bottom: 4rem;
  line-height: 1.7;
}

/* ─── REVEAL ANIMATIONS ─── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── PROBLEM SECTION ─── */
.problem-section { background: var(--off-white); }

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  margin-bottom: 5rem;
}
.problem-stat {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 3rem 2.5rem;
  background: var(--white);
  transition-delay: calc(var(--i, 0) * 0.12s);
}
.problem-stat:nth-child(1) { --i: 0; }
.problem-stat:nth-child(2) { --i: 1; }
.problem-stat:nth-child(3) { --i: 2; }

.stat-num {
  font-family: var(--serif);
  font-size: 4rem;
  font-weight: 300;
  color: var(--teal);
  line-height: 1;
}
.stat-desc {
  font-size: 0.9rem;
  color: var(--gray-mid);
  line-height: 1.6;
}

.problem-prose {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}
.problem-prose p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--gray-mid);
  margin-bottom: 1.5rem;
}
.problem-prose em { font-style: italic; color: var(--gray-dark); }
.prob-question {
  font-family: var(--serif);
  font-size: 2.2rem !important;
  font-weight: 300;
  color: var(--gray-dark) !important;
  font-style: italic;
  margin-top: 2rem;
}

/* ─── HOW IT WORKS ─── */
.how-section {
  background: var(--gray-dark);
  color: var(--white);
}
.how-section .section-title { color: var(--white); }
.how-section .section-label { color: var(--teal-light); }
.how-section .section-label::before { background: var(--teal-light); }

.steps-track {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}
.steps-track::before {
  content: '';
  position: absolute;
  left: 2.5rem;
  top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom,
    transparent, var(--teal-deep) 10%, var(--teal-deep) 90%, transparent);
  opacity: 0.3;
}

.step {
  display: flex;
  gap: 3rem;
  padding: 3rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  position: relative;
  transition-delay: calc(var(--si, 0) * 0.1s);
}
.step:last-child { border-bottom: none; }
[data-step="1"] { --si: 0; }
[data-step="2"] { --si: 1; }
[data-step="3"] { --si: 2; }
[data-step="4"] { --si: 3; }
[data-step="5"] { --si: 4; }

.step-num {
  flex: 0 0 5rem;
  font-family: var(--jp);
  font-size: 3.5rem;
  font-weight: 300;
  color: var(--teal-deep);
  line-height: 1;
  padding-top: 0.1rem;
  position: relative;
  z-index: 1;
}
.step-body { flex: 1; }
.step-body h3 {
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--white);
  margin-bottom: 0.75rem;
}
.step-body p {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.75;
  max-width: 520px;
}

.step-seal-mini {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1.5rem;
}
.step-seal-mini .k {
  font-family: var(--jp);
  font-size: 2rem;
  color: var(--teal-light);
  font-weight: 300;
}
.hex-tag {
  font-family: 'Courier New', monospace;
  font-size: 0.7rem;
  padding: 0.25rem 0.6rem;
  background: rgba(74,155,155,0.15);
  border: 1px solid rgba(74,155,155,0.3);
  border-radius: 2px;
  color: var(--teal-light);
  letter-spacing: 0.1em;
}

.step-seals-duo {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}
.mini-seal {
  width: 72px; height: 72px;
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
}
.mini-seal .k {
  font-family: var(--jp);
  font-size: 1.2rem;
  font-weight: 300;
}
.color-on-trans {
  background: transparent;
  border: 1px solid rgba(74,155,155,0.4);
}
.color-on-trans .k { color: var(--teal-light); }
.white-on-color {
  background: var(--teal);
}
.white-on-color .k { color: var(--white); }

/* ─── TRUST LEVELS ─── */
.levels-section { background: var(--white); }

.trust-spectrum {
  position: relative;
  margin: 3rem 0;
}
.spectrum-bar {
  height: 2px;
  background: var(--gray-bg);
  border-radius: 1px;
  margin-bottom: 3rem;
  overflow: hidden;
}
.spectrum-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--teal-pale), var(--teal), var(--teal-deep));
  border-radius: 1px;
  transition: width 1.5s var(--ease-out);
}
.spectrum-fill.animated { width: 100%; }

.trust-levels {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}
.trust-level {
  position: relative;
}
.level-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--gray-pale);
  margin-bottom: 1.5rem;
  position: relative;
  transition: background 0.4s;
}
.trust-level[data-level="1"] .level-dot { background: var(--teal-pale); border: 2px solid var(--teal-light); }
.trust-level[data-level="2"] .level-dot { background: var(--teal-light); }
.trust-level[data-level="3"] .level-dot { background: var(--teal); }
.trust-level[data-level="4"] .level-dot { background: var(--teal-deep); }

.level-card {
  padding: 2rem 1.75rem;
  background: var(--off-white);
  border-top: 2px solid transparent;
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
}
.trust-level[data-level="1"] .level-card { border-top-color: var(--teal-pale); }
.trust-level[data-level="2"] .level-card { border-top-color: var(--teal-light); }
.trust-level[data-level="3"] .level-card { border-top-color: var(--teal); }
.trust-level[data-level="4"] .level-card { border-top-color: var(--teal-deep); }

.level-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.07);
}
.level-mark {
  display: block;
  font-family: var(--jp);
  font-size: 2.5rem;
  font-weight: 300;
  color: var(--teal);
  margin-bottom: 1rem;
  line-height: 1;
}
.level-card h4 {
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--gray-dark);
  margin-bottom: 0.5rem;
}
.level-card p {
  font-size: 0.85rem;
  color: var(--gray-mid);
  line-height: 1.65;
  margin-bottom: 1rem;
}
.level-tag {
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--teal-deep);
  padding: 0.25rem 0.6rem;
  border: 1px solid rgba(74,155,155,0.25);
  border-radius: 2px;
  display: inline-block;
}

.trust-note {
  max-width: 600px;
  margin: 3rem auto 0;
  text-align: center;
  padding: 2rem 2.5rem;
  background: var(--teal-ghost);
  border: 1px solid rgba(74,155,155,0.15);
  border-radius: 2px;
}
.trust-note p {
  font-size: 0.9rem;
  color: var(--gray-mid);
  line-height: 1.7;
  font-style: italic;
}

/* ─── THE SEAL SECTION ─── */
.seal-section { background: var(--off-white); }

.seal-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin: 3rem 0 5rem;
}
.seal-showcase-left, .seal-showcase-right {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}
/* ─── PNG PLACEHOLDER SEAL CARDS ─── */
.seal-png-placeholder {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  transition: transform 0.4s, box-shadow 0.4s;
  cursor: default;
  border-radius: 20px;
}
.seal-png-placeholder:hover { transform: scale(1.02); }

.seal-png-dark {
  background: var(--gray-dark);
  border: 1px solid rgba(74,155,155,0.2);
  box-shadow: 0 20px 60px rgba(0,0,0,0.15), 0 0 40px rgba(74,155,155,0.08);
}
.seal-png-light {
  background: var(--teal);
  box-shadow: 0 20px 60px rgba(74,155,155,0.25);
}

/* Dashed PNG boundary indicator */
.seal-png-placeholder::before {
  content: '';
  position: absolute;
  inset: 12px;
  border: 1px dashed rgba(255,255,255,0.12);
  border-radius: 2px;
  pointer-events: none;
}

.png-placeholder-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  padding: 2rem;
  position: relative;
  z-index: 1;
}

.png-placeholder-label {
  position: absolute;
  bottom: 1.2rem;
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0.3;
  font-family: 'Courier New', monospace;
}
.seal-png-dark .png-placeholder-label { color: var(--teal-light); }
.seal-png-light .png-placeholder-label { color: var(--white); }

.seal-kanji-full .k {
  font-family: var(--jp);
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  font-weight: 300;
  line-height: 1;
  transition: transform 0.3s;
}
.seal-png-dark .seal-kanji-full .k {
  color: var(--teal-light);
  text-shadow: 0 0 30px rgba(74,155,155,0.4);
}
.seal-png-light .seal-kanji-full .k {
  color: var(--white);
  text-shadow: 0 2px 8px rgba(0,0,0,0.15);
}
.seal-kanji-full .k:hover { transform: scale(1.2); }

.seal-meta { text-align: center; }
.seal-code-full {
  font-family: 'Courier New', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  margin-bottom: 0.3rem;
}
.seal-png-dark .seal-code-full { color: rgba(255,255,255,0.3); }
.seal-png-light .seal-code-full { color: rgba(255,255,255,0.7); }

.seal-hash { font-size: 0.65rem; letter-spacing: 0.1em; text-transform: uppercase; }
.seal-png-dark .seal-hash { color: var(--teal); }
.seal-png-light .seal-hash { color: rgba(255,255,255,0.6); }

/* ─── HISTORY BLOCK ─── */
.kanji-history {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 3.5rem;
  padding: 4rem 0;
  border-top: 1px solid var(--gray-bg);
  border-bottom: 1px solid var(--gray-bg);
  margin: 4rem 0;
  align-items: start;
}

.history-timeline-mark {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding-top: 0.5rem;
  min-width: 80px;
}
.history-year, .history-year-now {
  font-family: 'Courier New', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--teal-deep);
  white-space: nowrap;
}
.history-year-now { color: var(--teal); }
.history-line {
  flex: 1;
  width: 1px;
  min-height: 80px;
  background: linear-gradient(to bottom, var(--teal-deep), var(--teal));
  opacity: 0.4;
}

.history-content h3 {
  font-family: var(--serif);
  font-size: 1.6rem;
  font-weight: 400;
  color: var(--gray-dark);
  margin-bottom: 1.25rem;
  font-style: italic;
  line-height: 1.2;
}
.history-content p {
  font-size: 0.95rem;
  color: var(--gray-mid);
  line-height: 1.8;
  margin-bottom: 1.1rem;
  max-width: 640px;
}
.history-content em { font-style: italic; color: var(--gray-dark); }
.history-content strong { font-weight: 500; color: var(--gray-dark); }

.hist-callout {
  font-family: var(--serif);
  font-size: 1.4rem !important;
  font-style: italic;
  color: var(--teal-deep) !important;
  margin-top: 1.5rem !important;
  letter-spacing: 0.02em;
}

/* ─── SEAL ANATOMY ─── */
.seal-anatomy {
  margin-top: 4rem;
  padding-top: 4rem;
  border-top: 1px solid var(--gray-bg);
}
.seal-anatomy h3 {
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--gray-dark);
  margin-bottom: 0.5rem;
  font-style: italic;
}
.anatomy-sub {
  font-size: 0.9rem;
  color: var(--gray-light);
  margin-bottom: 2.5rem;
  letter-spacing: 0.04em;
}

.anatomy-parts {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 0;
  align-items: stretch;
}
.anatomy-divider {
  width: 1px;
  background: var(--gray-bg);
  margin: 0 2rem;
  align-self: stretch;
}

.anatomy-part {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding: 2rem 0;
}
.anatomy-tag {
  font-family: 'Courier New', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--white);
  background: var(--teal-deep);
  padding: 0.3rem 0.75rem;
  border-radius: 2px;
  display: inline-block;
  align-self: flex-start;
}
.anatomy-body h4 {
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--gray-dark);
  margin-bottom: 0.6rem;
}
.jp-sub {
  font-family: var(--jp);
  font-weight: 300;
  color: var(--teal);
  font-size: 1rem;
}
.anatomy-body p {
  font-size: 0.88rem;
  color: var(--gray-mid);
  line-height: 1.75;
}

.seal-caption {
  font-size: 0.8rem;
  color: var(--gray-light);
  text-align: center;
  font-style: italic;
  letter-spacing: 0.03em;
}

/* ─── KANJI MEANING ─── */
.kanji-meaning {
  border-top: 1px solid var(--gray-bg);
  padding-top: 4rem;
}
.kanji-meaning h3 {
  font-family: var(--serif);
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--gray-dark);
  margin-bottom: 2.5rem;
  font-style: italic;
}
.kanji-row {
  display: flex;
  gap: 0;
}
.kanji-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 2rem 1rem;
  border-right: 1px solid var(--gray-bg);
  transition: background 0.3s;
}
.kanji-item:last-child { border-right: none; }
.kanji-item:hover { background: var(--teal-ghost); }
.kanji-char {
  font-family: var(--jp);
  font-size: 3rem;
  font-weight: 300;
  color: var(--teal);
  line-height: 1;
}
.kanji-rom {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--gray-light);
  text-transform: uppercase;
}
.kanji-mean {
  font-size: 0.8rem;
  color: var(--gray-mid);
  text-align: center;
}
.kanji-note {
  font-size: 0.85rem;
  color: var(--gray-light);
  line-height: 1.7;
  font-style: italic;
  margin-top: 2.5rem;
  max-width: 560px;
}

/* ─── CHAIN OF TRUST ─── */
.chain-section {
  background: var(--gray-dark);
  color: var(--white);
}
.chain-section .section-title { color: var(--white); }
.chain-section .section-label { color: var(--teal-light); }
.chain-section .section-label::before { background: var(--teal-light); }
.chain-section .section-sub { color: rgba(255,255,255,0.5); }

.chain-visual {
  padding: 4rem 0;
  overflow-x: auto;
}
.chain-nodes {
  display: flex;
  align-items: center;
  gap: 0;
  min-width: 600px;
}
.chain-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  flex: 0 0 auto;
}
.chain-node-seal {
  width: 72px; height: 72px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--jp);
  font-size: 1.8rem;
  font-weight: 300;
  background: rgba(74,155,155,0.1);
  border: 1px solid rgba(74,155,155,0.2);
  color: rgba(255,255,255,0.3);
  transition: background 0.4s, border-color 0.4s, color 0.4s, box-shadow 0.4s;
}
.chain-node.active .chain-node-seal {
  background: rgba(74,155,155,0.2);
  border-color: var(--teal);
  color: var(--teal-light);
  box-shadow: 0 0 24px rgba(74,155,155,0.2);
}
.chain-node.future .chain-node-seal {
  background: transparent;
  border: 1px dashed rgba(74,155,155,0.25);
  color: rgba(255,255,255,0.15);
}
.chain-node-label {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-align: center;
  color: rgba(255,255,255,0.35);
  line-height: 1.4;
}
.chain-node.active .chain-node-label { color: rgba(255,255,255,0.6); }

.chain-link {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--teal-deep), rgba(74,155,155,0.2));
  opacity: 0.4;
  position: relative;
  top: -1.5rem;
  min-width: 40px;
}

.chain-message {
  max-width: 600px;
}
.chain-message p {
  font-size: 1rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.75;
  margin-bottom: 1.25rem;
}
.chain-message p:last-of-type {
  font-family: var(--serif);
  font-size: 1.3rem;
  color: rgba(255,255,255,0.8);
  font-style: italic;
}
.chain-btn {
  margin-top: 1rem;
  color: var(--teal-light);
  border-color: rgba(74,155,155,0.3);
  font-size: 0.85rem;
}
.chain-btn:hover {
  color: var(--white);
  border-color: var(--teal);
}

/* ─── PRICING ─── */
.pricing-section { background: var(--white); }

.pricing-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  margin: 3rem 0 4rem;
  max-width: 800px;
}
.price-card {
  padding: 3.5rem 3rem;
  background: var(--off-white);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.price-card.featured {
  background: var(--gray-dark);
  color: var(--white);
}
.price-card-badge {
  position: absolute;
  top: 1.5rem; right: 1.5rem;
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 0.25rem 0.75rem;
  background: var(--teal);
  color: var(--white);
  border-radius: 2px;
}
.price-kanji {
  font-family: var(--jp);
  font-size: 3rem;
  font-weight: 300;
  color: var(--teal);
  line-height: 1;
}
.price-card h3 {
  font-family: var(--serif);
  font-size: 1.6rem;
  font-weight: 300;
}
.price-card.featured h3 { color: var(--white); }
.price-card:not(.featured) h3 { color: var(--gray-dark); }

.price-amount {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}
.price-big {
  font-family: var(--serif);
  font-size: 3.5rem;
  font-weight: 300;
  color: var(--teal-light);
  line-height: 1;
}
.price-card:not(.featured) .price-big { color: var(--teal); }
.price-unit {
  font-size: 0.85rem;
  color: var(--gray-light);
}

.price-card > p {
  font-size: 0.9rem;
  line-height: 1.7;
}
.price-card.featured > p { color: rgba(255,255,255,0.55); }
.price-card:not(.featured) > p { color: var(--gray-mid); }

.price-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.price-list li {
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.price-card.featured .price-list li { color: rgba(255,255,255,0.6); }
.price-card:not(.featured) .price-list li { color: var(--gray-mid); }
.price-list li::before {
  content: '·';
  color: var(--teal);
  font-size: 1.2rem;
  line-height: 1;
}

.price-card .btn-primary { align-self: flex-start; margin-top: auto; }
.price-card .btn-ghost {
  align-self: flex-start;
  margin-top: auto;
  color: var(--gray-mid);
  border-color: var(--gray-pale);
}
.price-card .btn-ghost:hover { color: var(--teal-deep); border-color: var(--teal); }

.pricing-philosophy {
  max-width: 600px;
  padding: 2.5rem;
  border-left: 2px solid var(--teal);
}
.pricing-philosophy p {
  font-family: var(--serif);
  font-size: 1.1rem;
  font-weight: 300;
  line-height: 1.8;
  color: var(--gray-mid);
  font-style: italic;
}

/* ─── FOOTER ─── */
.site-footer {
  background: var(--gray-dark);
  padding: 5rem 0 3rem;
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 4rem;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 3rem;
  align-items: start;
}
.footer-seal-mark {
  font-family: var(--jp);
  font-size: 3rem;
  font-weight: 300;
  color: var(--teal);
  line-height: 1;
  margin-bottom: 0.75rem;
}
.footer-tagline {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.35);
  font-style: italic;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.footer-links a {
  font-size: 1rem;
  color: rgba(255,255,255,0.35);
  letter-spacing: 0.05em;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--teal-light); }

.footer-copy {
  text-align: right;
}
.footer-copy p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.25);
  line-height: 1.8;
}
.footer-hash {
  font-family: 'Courier New', monospace;
  font-size: 0.85rem !important;
  color: rgba(74,155,155,0.4) !important;
  letter-spacing: 0.1em;
  margin-top: 1rem;
}

/* ─── ANIMATIONS ─── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ─── LANGUAGE VISIBILITY ─── */
[data-i18n] { transition: opacity 0.2s; }

/* ─── RESPONSIVE ─── */
@media (max-width: 1024px) {
  .hero-content { gap: 3rem; }
  .site-header { padding: 1.5rem 2rem; }
  .container { padding: 0 2.5rem; }
  .trust-levels { grid-template-columns: repeat(2, 1fr); }
  .pricing-cards { max-width: 100%; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .hero-content {
    flex-direction: column;
    padding: 2rem 2rem 3rem;
    align-items: flex-start;
  }
  .hero-right { width: 100%; }
  .seal-card { width: 220px; height: 220px; }
  .seal-aura { width: 280px; height: 280px; }
  .hero-title { font-size: clamp(2.5rem, 8vw, 3.5rem); }
  .container { padding: 0 1.5rem; }
  .section { padding: 5rem 0; }
  .problem-grid { grid-template-columns: 1fr; }
  .trust-levels { grid-template-columns: 1fr; }
  .seal-showcase { grid-template-columns: 1fr; }
  .kanji-row { gap: 0; flex-wrap: wrap; }
  .kanji-item { flex: 0 0 33.33%; }
  .anatomy-parts { grid-template-columns: 1fr; }
  .anatomy-divider { width: 100%; height: 1px; margin: 0; }
  .kanji-history { grid-template-columns: 1fr; gap: 2rem; }
  .history-timeline-mark { flex-direction: row; min-width: unset; }
  .history-line { width: 40px; height: 1px; min-height: unset; background: linear-gradient(to right, var(--teal-deep), var(--teal)); }
  .pricing-cards { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 2rem; }
  .footer-copy { text-align: left; }
  .steps-track::before { display: none; }
  .section-title { font-size: clamp(1.8rem, 5vw, 2.5rem); }
  .lang-bar { padding: 0.5rem 1rem; }
}

@media (max-width: 480px) {
  .hero-cta { flex-direction: column; }
  .btn-primary, .btn-ghost { text-align: center; justify-content: center; }
  .seal-card { width: 200px; height: 200px; }
  .seal-kanji-grid .k { font-size: 2rem; }
}

/* ─── EXTENDED PRICING (3 cards, physical) ─── */
.pricing-cards {
  grid-template-columns: repeat(3, 1fr) !important;
}
.price-currency {
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 300;
  color: var(--teal-light);
  line-height: 1;
  align-self: flex-start;
  padding-top: 0.5rem;
}
.price-card:not(.featured) .price-currency { color: var(--teal); }
.price-card-physical .price-currency { color: #b8963e !important; }

.price-card-physical {
  background: #faf8f4;
  border-top: 2px solid #b8963e;
}
.price-card-physical .price-big { color: #b8963e; }
.price-card-physical .price-list li::before { color: #b8963e; }

.price-badge-gold {
  background: #b8963e !important;
}
.btn-gold {
  color: #b8963e !important;
  border-color: rgba(184,150,62,0.35) !important;
}
.btn-gold:hover {
  border-color: #b8963e !important;
  color: #8a6f2e !important;
}

.pricing-more {
  margin-top: 2rem;
}

/* ─── SUB-PAGE SHARED LAYOUT ─── */
.subpage-hero {
  background: var(--gray-dark);
  padding: 7rem 0 5rem;
  position: relative;
  overflow: hidden;
}
.subpage-hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(74,155,155,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74,155,155,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}
.subpage-hero .container { position: relative; z-index: 1; }
.subpage-eyebrow {
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.subpage-eyebrow::before {
  content: '';
  display: block;
  width: 32px; height: 1px;
  background: var(--teal);
  opacity: 0.5;
}
.subpage-hero h1 {
  font-family: var(--serif);
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 300;
  line-height: 1.1;
  color: var(--white);
  margin-bottom: 1.5rem;
  max-width: 700px;
}
.subpage-hero h1 em {
  font-style: italic;
  color: var(--teal-light);
}
.subpage-hero-sub {
  font-size: 1.05rem;
  line-height: 1.75;
  color: rgba(255,255,255,0.55);
  max-width: 540px;
}
.subpage-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 4rem;
  margin-top: 2rem;
}
.subpage-back {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.4);
  transition: color 0.2s;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.subpage-back:hover { color: var(--teal-light); }
.subpage-back::before { content: '←'; }

/* ─── PRICING PAGE ─── */
.pricing-full-section { background: var(--off-white); padding: 6rem 0; }
.pricing-full-section + .pricing-full-section { background: var(--white); }

.pricing-full-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  margin: 3rem 0;
}
.price-card-full {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding: 3.5rem 3rem;
  background: var(--white);
  position: relative;
}
.price-card-full.is-featured {
  background: var(--gray-dark);
  color: var(--white);
}
.price-card-full.is-physical {
  background: #faf8f4;
}
.price-card-full .price-card-badge {
  position: absolute;
  top: 1.5rem; right: 1.5rem;
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 0.25rem 0.75rem;
  border-radius: 2px;
}
.price-card-full.is-featured .price-card-badge { background: var(--teal); color: var(--white); }
.price-card-full.is-physical .price-card-badge { background: #b8963e; color: var(--white); }

.full-kanji {
  font-family: var(--jp);
  font-size: 4rem;
  font-weight: 300;
  line-height: 1;
}
.is-featured .full-kanji { color: var(--teal); }
.price-card-full:not(.is-featured):not(.is-physical) .full-kanji { color: var(--teal); }
.is-physical .full-kanji { color: #b8963e; }

.price-card-full h3 {
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 300;
}
.is-featured h3 { color: var(--white); }
.price-card-full:not(.is-featured) h3 { color: var(--gray-dark); }

.price-display {
  display: flex;
  align-items: baseline;
  gap: 0.3rem;
}
.price-sym {
  font-family: var(--serif);
  font-size: 1.8rem;
  font-weight: 300;
  line-height: 1;
  padding-top: 0.4rem;
  align-self: flex-start;
}
.price-num {
  font-family: var(--serif);
  font-size: 4rem;
  font-weight: 300;
  line-height: 1;
}
.price-sub { font-size: 0.85rem; color: var(--gray-light); }
.is-featured .price-sym,
.is-featured .price-num { color: var(--teal-light); }
.price-card-full:not(.is-featured):not(.is-physical) .price-sym,
.price-card-full:not(.is-featured):not(.is-physical) .price-num { color: var(--teal); }
.is-physical .price-sym,
.is-physical .price-num { color: #b8963e; }

.price-card-full > p {
  font-size: 0.92rem;
  line-height: 1.75;
}
.is-featured > p { color: rgba(255,255,255,0.55); }
.price-card-full:not(.is-featured) > p { color: var(--gray-mid); }

.price-divider {
  width: 100%;
  height: 1px;
  background: var(--gray-bg);
  margin: 0.5rem 0;
}
.is-featured .price-divider { background: rgba(255,255,255,0.08); }

.price-feature-list {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  flex: 1;
}
.price-feature-list li {
  font-size: 0.88rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  line-height: 1.5;
}
.is-featured .price-feature-list li { color: rgba(255,255,255,0.6); }
.price-card-full:not(.is-featured) .price-feature-list li { color: var(--gray-mid); }
.price-feature-list li .feat-icon {
  flex: 0 0 auto;
  font-size: 0.9rem;
  margin-top: 0.05rem;
}
.is-featured .feat-icon { color: var(--teal); }
.price-card-full:not(.is-featured):not(.is-physical) .feat-icon { color: var(--teal); }
.is-physical .feat-icon { color: #b8963e; }

.price-cta-row {
  margin-top: auto;
  padding-top: 1rem;
}

.pricing-note-block {
  max-width: 680px;
  margin: 3rem auto 0;
  padding: 2.5rem 3rem;
  border-left: 2px solid var(--teal);
}
.pricing-note-block p {
  font-family: var(--serif);
  font-size: 1.1rem;
  font-weight: 300;
  line-height: 1.8;
  color: var(--gray-mid);
  font-style: italic;
}

.faq-block {
  margin-top: 5rem;
}
.faq-block h3 {
  font-family: var(--serif);
  font-size: 1.6rem;
  font-weight: 300;
  color: var(--gray-dark);
  margin-bottom: 2.5rem;
  font-style: italic;
}
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.faq-item {
  border-top: 1px solid var(--gray-bg);
  padding: 2rem 0;
}
.faq-item:last-child { border-bottom: 1px solid var(--gray-bg); }
.faq-item h4 {
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 400;
  color: var(--gray-dark);
  margin-bottom: 0.75rem;
}
.faq-item p {
  font-size: 0.92rem;
  color: var(--gray-mid);
  line-height: 1.75;
  max-width: 680px;
}

/* ─── ABOUT PAGE ─── */
.about-body-section { background: var(--off-white); padding: 7rem 0; }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  align-items: start;
}
.about-lead {
  font-family: var(--serif);
  font-size: 1.4rem;
  font-weight: 300;
  line-height: 1.6;
  color: var(--gray-dark);
  font-style: italic;
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--gray-bg);
}
.about-body-text p {
  font-size: 1rem;
  color: var(--gray-mid);
  line-height: 1.85;
  margin-bottom: 1.4rem;
}
.about-body-text p strong { color: var(--gray-dark); font-weight: 500; }
.about-body-text p em { font-style: italic; color: var(--gray-dark); }

.about-sidebar {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  position: sticky;
  top: 6rem;
}
.about-kanji-display {
  font-family: var(--jp);
  font-size: 7rem;
  font-weight: 300;
  color: var(--teal);
  line-height: 1;
  opacity: 0.25;
  text-align: center;
  letter-spacing: 0.1em;
}
.about-stat-block {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.about-stat {
  padding: 1.75rem 2rem;
  background: var(--white);
  border-left: 2px solid var(--teal);
}
.about-stat-num {
  font-family: var(--serif);
  font-size: 2.5rem;
  font-weight: 300;
  color: var(--teal);
  line-height: 1;
  margin-bottom: 0.4rem;
}
.about-stat-label {
  font-size: 0.82rem;
  color: var(--gray-mid);
  line-height: 1.5;
}

.about-principle-block {
  background: var(--white);
  padding: 7rem 0;
}
.about-principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  margin-top: 3rem;
}
.about-principle {
  padding: 2.5rem 2.5rem;
  background: var(--off-white);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.principle-kanji {
  font-family: var(--jp);
  font-size: 2.8rem;
  font-weight: 300;
  color: var(--teal);
  line-height: 1;
}
.about-principle h4 {
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--gray-dark);
}
.about-principle p {
  font-size: 0.88rem;
  color: var(--gray-mid);
  line-height: 1.7;
}

.about-company-link {
  background: var(--gray-dark);
  padding: 5rem 0;
}
.company-link-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 3rem;
  flex-wrap: wrap;
}
.company-link-text h3 {
  font-family: var(--serif);
  font-size: 1.6rem;
  font-weight: 300;
  color: var(--white);
  margin-bottom: 0.75rem;
  font-style: italic;
}
.company-link-text p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.45);
  max-width: 480px;
  line-height: 1.7;
}
.company-link-logo {
  font-family: var(--jp);
  font-size: 3rem;
  font-weight: 300;
  color: var(--teal);
  white-space: nowrap;
}

/* ─── USE CASES PAGE ─── */
.usecases-intro {
  background: var(--off-white);
  padding: 6rem 0 4rem;
}
.usecases-intro-text {
  max-width: 640px;
  font-size: 1.05rem;
  color: var(--gray-mid);
  line-height: 1.8;
}

.usecase-section {
  padding: 6rem 0;
  border-top: 1px solid var(--gray-bg);
}
.usecase-section:nth-child(even) { background: var(--white); }
.usecase-section:nth-child(odd) { background: var(--off-white); }

.usecase-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 5rem;
  align-items: start;
}
.usecase-number {
  font-family: var(--jp);
  font-size: 6rem;
  font-weight: 300;
  color: var(--teal);
  line-height: 1;
  opacity: 0.2;
  text-align: right;
}
.usecase-icon {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  display: block;
}
.usecase-body h2 {
  font-family: var(--serif);
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  font-weight: 300;
  color: var(--gray-dark);
  margin-bottom: 1rem;
  line-height: 1.2;
}
.usecase-body h2 em {
  font-style: italic;
  color: var(--teal-deep);
}
.usecase-body > p {
  font-size: 1rem;
  color: var(--gray-mid);
  line-height: 1.85;
  margin-bottom: 2rem;
  max-width: 600px;
}
.usecase-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
}
.usecase-tag {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.3rem 0.75rem;
  border: 1px solid rgba(74,155,155,0.25);
  border-radius: 2px;
  color: var(--teal-deep);
  background: var(--teal-ghost);
}
.usecase-bullets {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--gray-bg);
}
.usecase-bullet {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  font-size: 0.9rem;
  color: var(--gray-mid);
  line-height: 1.6;
}
.usecase-bullet-mark {
  flex: 0 0 auto;
  font-family: var(--jp);
  font-size: 1.1rem;
  color: var(--teal);
  margin-top: -0.05rem;
}

.usecases-cta {
  background: var(--gray-dark);
  padding: 6rem 0;
  text-align: center;
}
.usecases-cta h2 {
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 300;
  color: var(--white);
  margin-bottom: 1rem;
  font-style: italic;
}
.usecases-cta p {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.45);
  max-width: 480px;
  margin: 0 auto 2.5rem;
  line-height: 1.75;
}
.usecases-cta .cta-row {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ─── RESPONSIVE for new pages ─── */
@media (max-width: 900px) {
  .pricing-full-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; gap: 3rem; }
  .about-sidebar { position: static; }
  .about-principles { grid-template-columns: 1fr; }
  .usecase-grid { grid-template-columns: 1fr; gap: 2rem; }
  .usecase-number { text-align: left; font-size: 3rem; }
  .company-link-inner { flex-direction: column; gap: 1.5rem; }
}
@media (max-width: 768px) {
  .pricing-cards { grid-template-columns: 1fr !important; }
  .subpage-nav { padding: 1.5rem 1.5rem; }
}