:root {
  --kohaku-bg: #FDF6F0;
  --kohaku-card: #FFFFFF;
  --kohaku-text: #8B6914;
  --kohaku-text-soft: #A89050;
  --kohaku-gold: #B8860B;
  --kohaku-gold-bright: #DAA520;
  --kohaku-bronze: #CD7F32;
  --kohaku-bronze-soft: #D4AF37;
  --kohaku-pastel: #FAF0E6;
  --kohaku-deep: #5A3D0A;
  --kohaku-ink: #3A2A08;
  --kohaku-shadow: 0 24px 60px rgba(139,105,20,0.15);
  --kohaku-shadow-hover: 0 30px 80px rgba(184,134,11,0.30);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background-color: var(--kohaku-bg);
  color: var(--kohaku-text);
  font-family: 'Noto Serif JP', serif;
  font-size: 16px;
  line-height: 1.85;
  overflow-x: hidden;
}

strong, p, span, li, h1, h2, h3, h4, h5, h6, a, button {
  color: inherit;
}

h1, h2, .kohaku-display {
  font-family: 'Unbounded', sans-serif;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--kohaku-deep);
}

h3, h4, .kohaku-subhead {
  font-family: 'Noto Serif JP', serif;
  font-weight: 600;
  color: var(--kohaku-text);
}

.kohaku-mono {
  font-family: 'IBM Plex Mono', monospace;
  letter-spacing: 0.04em;
}

a {
  color: var(--kohaku-gold);
  text-decoration: none;
  transition: color 0.25s ease;
}

a:hover {
  color: var(--kohaku-bronze);
}

.kohaku-sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 260px;
  height: 100vh;
  background: var(--kohaku-card);
  border-right: 2px solid var(--kohaku-bronze-soft);
  border-radius: 0 24px 24px 0;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  padding: 28px 20px;
  overflow-y: auto;
  transition: width 0.35s ease;
}

.kohaku-logo-block {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--kohaku-bronze-soft);
  margin-bottom: 18px;
}

.kohaku-logo-mark {
  width: 56px;
  height: 56px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--kohaku-gold), var(--kohaku-bronze));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-family: 'Unbounded', sans-serif;
  font-size: 26px;
  font-weight: 700;
  box-shadow: 0 8px 20px rgba(184,134,11,0.35);
}

.kohaku-logo-domain {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--kohaku-text-soft);
  letter-spacing: 0.08em;
}

.kohaku-logo-name {
  font-family: 'Noto Serif JP', serif;
  font-size: 14px;
  font-weight: 700;
  color: var(--kohaku-deep);
  line-height: 1.3;
}

.kohaku-logo-sub {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 9px;
  color: var(--kohaku-text-soft);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.kohaku-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}

.kohaku-nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: 16px;
  color: var(--kohaku-text);
  font-family: 'Noto Serif JP', serif;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.25s ease;
  white-space: nowrap;
  overflow: hidden;
}

.kohaku-nav-link:hover, .kohaku-nav-link.active {
  background: var(--kohaku-gold);
  color: #FFFFFF;
  box-shadow: 0 8px 20px rgba(184,134,11,0.30);
}

.kohaku-nav-link .nav-num {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  color: var(--kohaku-text-soft);
}

.kohaku-nav-link:hover .nav-num, .kohaku-nav-link.active .nav-num {
  color: #FFFFFF;
}

.kohaku-sidebar-cta {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: 16px;
  background: var(--kohaku-gold);
  color: #FFFFFF;
  text-align: center;
  font-family: 'Noto Serif JP', serif;
  font-weight: 700;
  font-size: 13px;
  box-shadow: 0 8px 24px rgba(184,134,11,0.35);
  transition: transform 0.2s ease;
  display: block;
  white-space: nowrap;
}

.kohaku-sidebar-cta:hover {
  transform: translateY(-2px);
  color: #FFFFFF;
}

.kohaku-main {
  margin-left: 260px;
  min-height: 100vh;
}

.kohaku-hero {
  position: relative;
  min-height: 92vh;
  padding: 80px 60px;
  overflow: hidden;
  background: var(--kohaku-bg);
}

.kohaku-kinetic-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.kohaku-kinetic-row {
  position: absolute;
  white-space: nowrap;
  font-family: 'Unbounded', sans-serif;
  font-weight: 700;
  color: var(--kohaku-gold);
  opacity: 0.10;
  letter-spacing: 0.15em;
  will-change: transform;
}

.kohaku-kinetic-row:nth-child(1) {
  top: 8%;
  font-size: 140px;
  animation: kinetic-slide-1 38s linear infinite alternate;
}
.kohaku-kinetic-row:nth-child(2) {
  top: 28%;
  font-size: 100px;
  animation: kinetic-slide-2 52s linear infinite alternate;
}
.kohaku-kinetic-row:nth-child(3) {
  top: 52%;
  font-size: 180px;
  animation: kinetic-slide-1 46s linear infinite alternate-reverse;
}
.kohaku-kinetic-row:nth-child(4) {
  top: 75%;
  font-size: 120px;
  animation: kinetic-slide-2 60s linear infinite alternate;
}

@keyframes kinetic-slide-1 {
  0% { transform: translateX(-20%); }
  100% { transform: translateX(20%); }
}
@keyframes kinetic-slide-2 {
  0% { transform: translateX(20%); }
  100% { transform: translateX(-20%); }
}

.kohaku-tech-grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--kohaku-bronze-soft) 1px, transparent 1px),
                    linear-gradient(90deg, var(--kohaku-bronze-soft) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.08;
  pointer-events: none;
  z-index: 0;
}

.kohaku-hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: center;
  max-width: 1300px;
  margin: 0 auto;
}

.kohaku-eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--kohaku-text-soft);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 18px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.kohaku-eyebrow::before {
  content: '';
  width: 36px;
  height: 1px;
  background: var(--kohaku-bronze);
}

.kohaku-hero-title {
  font-family: 'Unbounded', sans-serif;
  font-size: clamp(40px, 6vw, 80px);
  font-weight: 700;
  letter-spacing: 0.06em;
  word-spacing: 0.12em;
  line-height: 1.08;
  color: var(--kohaku-deep);
  margin: 0 0 24px 0;
}

.kohaku-hero-title .accent {
  color: var(--kohaku-gold);
}

.kohaku-hero-sub {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  color: var(--kohaku-text-soft);
  letter-spacing: 0.06em;
  margin-bottom: 36px;
  line-height: 1.7;
}

.kohaku-hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.kohaku-btn-primary {
  background: var(--kohaku-gold);
  color: #FFFFFF;
  padding: 18px 36px;
  border-radius: 24px;
  font-family: 'Noto Serif JP', serif;
  font-weight: 700;
  font-size: 15px;
  border: none;
  box-shadow: 0 10px 28px rgba(184,134,11,0.45);
  cursor: pointer;
  transition: all 0.25s ease;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  white-space: nowrap;
}

.kohaku-btn-primary:hover {
  background: var(--kohaku-deep);
  color: #FFFFFF;
  transform: translateY(-3px);
  box-shadow: 0 14px 34px rgba(90,61,10,0.40);
}

.kohaku-btn-secondary {
  background: var(--kohaku-card);
  color: var(--kohaku-gold);
  padding: 18px 36px;
  border-radius: 24px;
  font-family: 'Noto Serif JP', serif;
  font-weight: 700;
  font-size: 15px;
  border: 2px solid var(--kohaku-gold);
  cursor: pointer;
  transition: all 0.25s ease;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  white-space: nowrap;
}

.kohaku-btn-secondary:hover {
  background: var(--kohaku-gold);
  color: #FFFFFF;
  transform: translateY(-3px);
}

.kohaku-hero-visual {
  position: relative;
  aspect-ratio: 1/1.1;
  border-radius: 48px 24px 48px 24px;
  overflow: hidden;
  box-shadow: var(--kohaku-shadow);
  background: var(--kohaku-card);
}

.kohaku-hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.kohaku-floating-tag {
  position: absolute;
  padding: 12px 18px;
  border-radius: 18px;
  background: var(--kohaku-card);
  box-shadow: var(--kohaku-shadow);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--kohaku-deep);
  font-weight: 600;
  letter-spacing: 0.08em;
}

.kohaku-floating-tag.tl { top: 18px; left: 18px; }
.kohaku-floating-tag.br { bottom: 24px; right: 18px; background: var(--kohaku-gold); color: #FFFFFF; }

.kohaku-section {
  padding: 100px 60px;
  position: relative;
}

.kohaku-section-head {
  max-width: 800px;
  margin: 0 auto 70px auto;
  text-align: center;
}

.kohaku-section-eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--kohaku-gold);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.kohaku-section-title {
  font-family: 'Unbounded', sans-serif;
  font-size: clamp(32px, 4vw, 56px);
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--kohaku-deep);
  margin: 0 0 18px 0;
  line-height: 1.15;
}

.kohaku-section-sub {
  font-family: 'Noto Serif JP', serif;
  font-size: 15px;
  color: var(--kohaku-text-soft);
  line-height: 1.85;
}

.kohaku-stacking-wrap {
  position: relative;
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.kohaku-stack-card {
  position: relative;
  background: var(--kohaku-card);
  border-radius: 32px;
  overflow: hidden;
  box-shadow: var(--kohaku-shadow);
  transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  cursor: pointer;
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 280px;
  z-index: 1;
}

.kohaku-stack-card:hover {
  transform: scale(1.025) translateY(-6px);
  box-shadow: var(--kohaku-shadow-hover);
  z-index: 10;
  border: 2px solid var(--kohaku-gold);
}

.kohaku-stack-img {
  position: relative;
  overflow: hidden;
  background: var(--kohaku-pastel);
}

.kohaku-stack-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.kohaku-stack-card:hover .kohaku-stack-img img {
  transform: scale(1.05);
}

.kohaku-stack-content {
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.kohaku-stack-tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--kohaku-bronze);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.kohaku-stack-title {
  font-family: 'Unbounded', sans-serif;
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 700;
  color: var(--kohaku-deep);
  margin: 0 0 14px 0;
  letter-spacing: 0.04em;
  line-height: 1.25;
}

.kohaku-stack-desc {
  font-size: 14px;
  color: var(--kohaku-text);
  line-height: 1.85;
  margin-bottom: 18px;
}

.kohaku-stack-price {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  color: var(--kohaku-gold);
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 18px;
}

.kohaku-stack-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--kohaku-gold);
  font-weight: 700;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.kohaku-bento {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 180px;
  gap: 18px;
  max-width: 1300px;
  margin: 0 auto;
}

.kohaku-bento-cell {
  position: relative;
  background: var(--kohaku-card);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--kohaku-shadow);
  transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 1;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
}

.kohaku-bento-cell:hover {
  transform: scale(1.04);
  z-index: 10;
  box-shadow: var(--kohaku-shadow-hover);
  border: 2px solid var(--kohaku-gold);
}

.kohaku-bento-cell.size-l {
  grid-column: span 2;
  grid-row: span 2;
}

.kohaku-bento-cell.size-mh {
  grid-column: span 2;
  grid-row: span 1;
}

.kohaku-bento-cell.size-mv {
  grid-column: span 1;
  grid-row: span 2;
}

.kohaku-bento-cell.size-s {
  grid-column: span 1;
  grid-row: span 1;
}

.kohaku-bento-img {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.kohaku-bento-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.kohaku-bento-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(90,61,10,0.85), rgba(90,61,10,0.10) 60%);
  z-index: 1;
}

.kohaku-bento-content {
  position: relative;
  z-index: 2;
  color: #FFFFFF;
}

.kohaku-bento-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  opacity: 0.85;
  margin-bottom: 6px;
}

.kohaku-bento-title {
  font-family: 'Unbounded', sans-serif;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #FFFFFF;
}

.kohaku-bento-cell.no-img {
  background: var(--kohaku-card);
  color: var(--kohaku-text);
}

.kohaku-bento-cell.no-img .kohaku-bento-label {
  color: var(--kohaku-bronze);
}

.kohaku-bento-cell.no-img .kohaku-bento-title {
  color: var(--kohaku-deep);
}

.kohaku-timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: 20px 0;
}

.kohaku-timeline-line {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--kohaku-bronze-soft), var(--kohaku-gold), var(--kohaku-bronze-soft));
  transform: translateX(-50%);
}

.kohaku-timeline-row {
  display: grid;
  grid-template-columns: 1fr 60px 1fr;
  align-items: center;
  margin-bottom: 50px;
  position: relative;
}

.kohaku-timeline-card {
  background: var(--kohaku-card);
  border-radius: 24px;
  padding: 24px;
  box-shadow: var(--kohaku-shadow);
  transition: all 0.3s ease;
  position: relative;
  z-index: 2;
}

.kohaku-timeline-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--kohaku-shadow-hover);
  border: 2px solid var(--kohaku-gold);
}

.kohaku-timeline-card.left { grid-column: 1; text-align: right; }
.kohaku-timeline-card.right { grid-column: 3; }

.kohaku-timeline-num {
  grid-column: 2;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--kohaku-gold);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Unbounded', sans-serif;
  font-weight: 700;
  font-size: 18px;
  margin: 0 auto;
  box-shadow: 0 8px 20px rgba(184,134,11,0.40);
  position: relative;
  z-index: 3;
}

.kohaku-timeline-step {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--kohaku-bronze);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.kohaku-timeline-title {
  font-family: 'Noto Serif JP', serif;
  font-weight: 700;
  font-size: 18px;
  color: var(--kohaku-deep);
  margin-bottom: 8px;
}

.kohaku-timeline-desc {
  font-size: 13px;
  color: var(--kohaku-text-soft);
  line-height: 1.7;
}

.kohaku-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  align-items: stretch;
  background: var(--kohaku-card);
  border-radius: 48px;
  overflow: hidden;
  box-shadow: var(--kohaku-shadow);
  max-width: 1300px;
  margin: 0 auto;
}

.kohaku-split-img {
  position: relative;
  min-height: 540px;
  overflow: hidden;
  background: var(--kohaku-pastel);
}

.kohaku-split-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.kohaku-split-text {
  padding: 70px 60px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.kohaku-split-eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--kohaku-gold);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.kohaku-split-title {
  font-family: 'Unbounded', sans-serif;
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--kohaku-deep);
  margin-bottom: 22px;
  line-height: 1.2;
}

.kohaku-split-body p {
  font-size: 15px;
  color: var(--kohaku-text);
  line-height: 1.9;
  margin-bottom: 18px;
}

.kohaku-stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid var(--kohaku-bronze-soft);
}

.kohaku-stat-num {
  font-family: 'Unbounded', sans-serif;
  font-size: 32px;
  font-weight: 700;
  color: var(--kohaku-gold);
  letter-spacing: 0.02em;
  margin-bottom: 4px;
}

.kohaku-stat-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--kohaku-text-soft);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.kohaku-flexgrid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  max-width: 1300px;
  margin: 0 auto;
}

.kohaku-flex-card {
  background: var(--kohaku-card);
  border-radius: 24px;
  padding: 36px 28px;
  box-shadow: var(--kohaku-shadow);
  transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
  overflow: hidden;
  z-index: 1;
  cursor: pointer;
  border: 2px solid transparent;
}

.kohaku-flex-card:hover {
  transform: scale(1.06);
  z-index: 10;
  border-color: var(--kohaku-gold);
  box-shadow: var(--kohaku-shadow-hover);
}

.kohaku-flex-card::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -40px;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: var(--kohaku-pastel);
  z-index: 0;
  transition: transform 0.4s ease;
}

.kohaku-flex-card:hover::before {
  transform: scale(1.4);
  background: var(--kohaku-gold);
  opacity: 0.15;
}

.kohaku-flex-num {
  font-family: 'Unbounded', sans-serif;
  font-size: 36px;
  font-weight: 700;
  color: var(--kohaku-gold);
  letter-spacing: 0.04em;
  position: relative;
  z-index: 1;
  margin-bottom: 14px;
}

.kohaku-flex-title {
  font-family: 'Noto Serif JP', serif;
  font-weight: 700;
  font-size: 18px;
  color: var(--kohaku-deep);
  margin-bottom: 10px;
  position: relative;
  z-index: 1;
}

.kohaku-flex-desc {
  font-size: 13px;
  color: var(--kohaku-text-soft);
  line-height: 1.8;
  position: relative;
  z-index: 1;
}

.kohaku-team-list {
  max-width: 1000px;
  margin: 0 auto;
}

.kohaku-team-row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  padding: 24px 0;
  border-bottom: 1px solid var(--kohaku-bronze-soft);
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  z-index: 1;
}

.kohaku-team-row:hover {
  z-index: 10;
  transform: translateX(8px);
  border-bottom-color: var(--kohaku-gold);
}

.kohaku-team-name {
  font-family: 'Unbounded', sans-serif;
  font-size: clamp(20px, 2vw, 28px);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--kohaku-deep);
}

.kohaku-team-arrow {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 16px;
  color: var(--kohaku-bronze);
  transition: transform 0.3s ease;
}

.kohaku-team-row:hover .kohaku-team-arrow {
  transform: translateX(8px);
  color: var(--kohaku-gold);
}

.kohaku-team-card {
  display: none;
  grid-template-columns: 80px 1fr;
  gap: 22px;
  align-items: center;
  background: var(--kohaku-card);
  padding: 22px;
  border-radius: 24px;
  box-shadow: var(--kohaku-shadow);
  margin-bottom: 18px;
  border: 2px solid var(--kohaku-gold);
}

.kohaku-team-row.open .kohaku-team-card {
  display: grid;
}

.kohaku-team-photo {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--kohaku-pastel);
  flex-shrink: 0;
}

.kohaku-team-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.kohaku-team-info-name {
  font-family: 'Noto Serif JP', serif;
  font-weight: 700;
  font-size: 17px;
  color: var(--kohaku-deep);
  margin-bottom: 4px;
}

.kohaku-team-info-role {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--kohaku-bronze);
  letter-spacing: 0.12em;
  margin-bottom: 6px;
}

.kohaku-team-info-years {
  font-size: 13px;
  color: var(--kohaku-text-soft);
}

.kohaku-coverflow {
  position: relative;
  max-width: 1300px;
  margin: 0 auto;
  padding: 60px 0;
}

.kohaku-coverflow-track {
  display: flex;
  gap: 22px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding: 30px 40px;
  perspective: 1400px;
  scrollbar-width: thin;
  scrollbar-color: var(--kohaku-gold) transparent;
}

.kohaku-coverflow-card {
  flex: 0 0 60%;
  scroll-snap-align: center;
  background: var(--kohaku-card);
  border-radius: 32px;
  padding: 50px 44px;
  box-shadow: var(--kohaku-shadow);
  border: 2px solid transparent;
  transition: all 0.4s ease;
  transform: scale(0.92) rotateY(8deg);
  opacity: 0.7;
  position: relative;
}

.kohaku-coverflow-card.active {
  transform: scale(1) rotateY(0);
  opacity: 1;
  border-color: var(--kohaku-gold);
  box-shadow: var(--kohaku-shadow-hover);
}

.kohaku-coverflow-quote {
  font-family: 'Noto Serif JP', serif;
  font-size: 18px;
  line-height: 1.95;
  color: var(--kohaku-text);
  margin-bottom: 28px;
  font-weight: 500;
}

.kohaku-coverflow-quote::before {
  content: '「';
  font-family: 'Unbounded', sans-serif;
  color: var(--kohaku-gold);
  font-size: 40px;
  line-height: 0;
  vertical-align: -10px;
  margin-right: 6px;
}

.kohaku-coverflow-quote::after {
  content: '」';
  font-family: 'Unbounded', sans-serif;
  color: var(--kohaku-gold);
  font-size: 40px;
  line-height: 0;
  vertical-align: -10px;
  margin-left: 6px;
}

.kohaku-coverflow-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 20px;
  border-top: 1px solid var(--kohaku-bronze-soft);
}

.kohaku-coverflow-author {
  font-family: 'Noto Serif JP', serif;
  font-weight: 700;
  font-size: 15px;
  color: var(--kohaku-deep);
}

.kohaku-coverflow-loc {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--kohaku-bronze);
  letter-spacing: 0.10em;
}

.kohaku-coverflow-stars {
  color: var(--kohaku-gold);
  font-size: 16px;
  letter-spacing: 4px;
}

.kohaku-coverflow-nav {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 30px;
}

.kohaku-coverflow-btn {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--kohaku-card);
  border: 2px solid var(--kohaku-gold);
  color: var(--kohaku-gold);
  cursor: pointer;
  font-size: 20px;
  font-weight: 700;
  transition: all 0.25s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.kohaku-coverflow-btn:hover {
  background: var(--kohaku-gold);
  color: #FFFFFF;
}

.kohaku-faq {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.kohaku-faq-item {
  background: var(--kohaku-card);
  border-radius: 16px;
  box-shadow: var(--kohaku-shadow);
  overflow: hidden;
  transition: all 0.25s ease;
}

.kohaku-faq-item.open {
  border: 2px solid var(--kohaku-gold);
}

.kohaku-faq-q {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 28px;
  cursor: pointer;
  font-family: 'Noto Serif JP', serif;
  font-weight: 700;
  font-size: 16px;
  color: var(--kohaku-deep);
  gap: 16px;
}

.kohaku-faq-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--kohaku-gold);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  flex-shrink: 0;
  transition: transform 0.3s ease;
}

.kohaku-faq-item.open .kohaku-faq-icon {
  transform: rotate(45deg);
}

.kohaku-faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  padding: 0 28px;
  font-size: 14px;
  color: var(--kohaku-text);
  line-height: 1.85;
}

.kohaku-faq-item.open .kohaku-faq-a {
  max-height: 400px;
  padding: 0 28px 22px 28px;
}

.kohaku-form-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 0;
  background: var(--kohaku-card);
  border-radius: 48px;
  overflow: hidden;
  box-shadow: var(--kohaku-shadow);
  max-width: 1300px;
  margin: 0 auto;
}

.kohaku-form-side {
  padding: 60px 50px;
  background: var(--kohaku-card);
}

.kohaku-form-side.info {
  background: var(--kohaku-pastel);
  padding: 60px 50px;
}

.kohaku-form-eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--kohaku-gold);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.kohaku-form-title {
  font-family: 'Unbounded', sans-serif;
  font-size: clamp(26px, 2.6vw, 34px);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--kohaku-deep);
  margin-bottom: 28px;
  line-height: 1.2;
}

.kohaku-form-row {
  margin-bottom: 22px;
}

.kohaku-form-label {
  display: block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--kohaku-text-soft);
  letter-spacing: 0.10em;
  text-transform: uppercase;
  margin-bottom: 8px;
  font-weight: 600;
}

.kohaku-form-input {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 2px solid var(--kohaku-bronze-soft);
  padding: 10px 4px;
  font-family: 'Noto Serif JP', serif;
  font-size: 15px;
  color: var(--kohaku-deep);
  outline: none;
  transition: border-color 0.25s ease;
  resize: vertical;
}

.kohaku-form-input:focus {
  border-bottom-color: var(--kohaku-gold);
}

.kohaku-form-input::placeholder {
  color: var(--kohaku-text-soft);
  opacity: 0.6;
}

.kohaku-info-block {
  margin-bottom: 24px;
}

.kohaku-info-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  color: var(--kohaku-bronze);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.kohaku-info-value {
  font-family: 'Noto Serif JP', serif;
  font-size: 16px;
  color: var(--kohaku-deep);
  font-weight: 500;
  line-height: 1.6;
  word-break: break-all;
}

.kohaku-info-value.large {
  font-family: 'Unbounded', sans-serif;
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.kohaku-footer {
  background: var(--kohaku-gold);
  color: #FFFFFF;
  border-radius: 32px 32px 0 0;
  padding: 70px 60px 30px 60px;
  margin-left: 260px;
  margin-top: 80px;
}

.kohaku-footer a, .kohaku-footer strong, .kohaku-footer p, .kohaku-footer span, .kohaku-footer h4 {
  color: #FFFFFF;
}

.kohaku-footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 50px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255,255,255,0.25);
}

.kohaku-footer-brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.kohaku-footer-logo {
  font-family: 'Unbounded', sans-serif;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #FFFFFF;
}

.kohaku-footer-desc {
  font-size: 14px;
  line-height: 1.8;
  color: #FFFFFF;
  opacity: 0.95;
}

.kohaku-footer-col h4 {
  font-family: 'Unbounded', sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 18px;
  color: #FFFFFF;
}

.kohaku-footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.kohaku-footer-col li {
  margin-bottom: 10px;
  font-size: 14px;
  color: #FFFFFF;
}

.kohaku-footer-col a {
  font-size: 14px;
  color: #FFFFFF;
  opacity: 0.92;
  transition: opacity 0.2s ease;
}

.kohaku-footer-col a:hover {
  opacity: 1;
  color: #FFFFFF;
  text-decoration: underline;
}

.kohaku-footer-bottom {
  padding-top: 26px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: #FFFFFF;
  opacity: 0.92;
}

.kohaku-footer-legal {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
}

.kohaku-cookie-banner {
  position: fixed;
  bottom: 24px;
  left: 24px;
  max-width: 380px;
  background: var(--kohaku-card);
  border-radius: 24px;
  padding: 22px 24px;
  box-shadow: 0 16px 40px rgba(90,61,10,0.25);
  border: 2px solid var(--kohaku-gold);
  z-index: 2000;
  transition: transform 0.35s ease, opacity 0.35s ease;
}

.kohaku-cookie-banner.hidden {
  transform: translateY(200%);
  opacity: 0;
  pointer-events: none;
}

.kohaku-cookie-title {
  font-family: 'Unbounded', sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.10em;
  color: var(--kohaku-deep);
  margin-bottom: 8px;
}

.kohaku-cookie-text {
  font-size: 12px;
  color: var(--kohaku-text);
  line-height: 1.7;
  margin-bottom: 14px;
}

.kohaku-cookie-actions {
  display: flex;
  gap: 8px;
}

.kohaku-cookie-accept {
  flex: 1;
  background: var(--kohaku-gold);
  color: #FFFFFF;
  border: none;
  padding: 10px 14px;
  border-radius: 14px;
  font-weight: 700;
  font-size: 12px;
  cursor: pointer;
  font-family: 'Noto Serif JP', serif;
}

.kohaku-cookie-decline {
  flex: 1;
  background: transparent;
  color: var(--kohaku-deep);
  border: 1px solid var(--kohaku-bronze);
  padding: 10px 14px;
  border-radius: 14px;
  font-weight: 700;
  font-size: 12px;
  cursor: pointer;
  font-family: 'Noto Serif JP', serif;
}

.kohaku-burger {
  display: none;
  position: fixed;
  top: 18px;
  right: 18px;
  width: 54px;
  height: 54px;
  border-radius: 18px;
  background: var(--kohaku-card);
  border: 2px solid var(--kohaku-gold);
  z-index: 1100;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.kohaku-burger span {
  width: 22px;
  height: 2px;
  background: var(--kohaku-deep);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.kohaku-mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--kohaku-bg);
  z-index: 1050;
  padding: 100px 32px 40px 32px;
  overflow-y: auto;
  flex-direction: column;
  gap: 10px;
}

.kohaku-mobile-menu.open {
  display: flex;
}

.kohaku-mobile-menu .kohaku-nav-link {
  font-size: 20px;
  padding: 16px 20px;
}

.kohaku-mobile-close {
  position: fixed;
  top: 18px;
  right: 18px;
  width: 54px;
  height: 54px;
  border-radius: 18px;
  background: var(--kohaku-card);
  border: 2px solid var(--kohaku-gold);
  color: var(--kohaku-deep);
  font-size: 24px;
  font-weight: 700;
  cursor: pointer;
  z-index: 1160;
  display: none;
}

.kohaku-mobile-menu.open ~ .kohaku-mobile-close {
  display: flex;
  align-items: center;
  justify-content: center;
}

.kohaku-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.kohaku-reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.kohaku-cta-banner {
  text-align: center;
  padding: 90px 40px;
  background: var(--kohaku-pastel);
  border-radius: 48px;
  margin: 0 60px;
}

.kohaku-cta-banner h2 {
  font-family: 'Unbounded', sans-serif;
  font-size: clamp(28px, 3vw, 42px);
  letter-spacing: 0.05em;
  color: var(--kohaku-deep);
  margin-bottom: 18px;
}

.kohaku-cta-banner p {
  font-size: 15px;
  color: var(--kohaku-text);
  max-width: 700px;
  margin: 0 auto 32px auto;
  line-height: 1.85;
}

.kohaku-page-hero {
  padding: 80px 60px 60px 60px;
  position: relative;
  overflow: hidden;
}

.kohaku-page-hero-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.kohaku-page-hero h1 {
  font-family: 'Unbounded', sans-serif;
  font-size: clamp(34px, 4vw, 56px);
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--kohaku-deep);
  margin-bottom: 18px;
  line-height: 1.15;
}

.kohaku-page-hero p {
  font-size: 16px;
  color: var(--kohaku-text);
  line-height: 1.85;
  max-width: 700px;
}

.kohaku-process-flow {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  align-items: center;
}

.kohaku-process-steps {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.kohaku-process-step {
  display: grid;
  grid-template-columns: 50px 1fr;
  gap: 18px;
  padding: 18px;
  background: var(--kohaku-card);
  border-radius: 18px;
  box-shadow: var(--kohaku-shadow);
  align-items: center;
}

.kohaku-process-step-num {
  width: 50px;
  height: 50px;
  border-radius: 14px;
  background: var(--kohaku-gold);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Unbounded', sans-serif;
  font-weight: 700;
  font-size: 18px;
}

.kohaku-process-step-title {
  font-family: 'Noto Serif JP', serif;
  font-weight: 700;
  font-size: 16px;
  color: var(--kohaku-deep);
  margin-bottom: 4px;
}

.kohaku-process-step-desc {
  font-size: 13px;
  color: var(--kohaku-text-soft);
  line-height: 1.7;
}

.kohaku-process-image {
  position: relative;
  border-radius: 32px;
  overflow: hidden;
  box-shadow: var(--kohaku-shadow);
  aspect-ratio: 4/5;
}

.kohaku-process-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.kohaku-feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}

.kohaku-feature-row.reverse {
  direction: rtl;
}

.kohaku-feature-row.reverse > * {
  direction: ltr;
}

.kohaku-feature-img {
  border-radius: 32px;
  overflow: hidden;
  box-shadow: var(--kohaku-shadow);
  aspect-ratio: 4/3;
}

.kohaku-feature-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.kohaku-feature-text h3 {
  font-family: 'Unbounded', sans-serif;
  font-size: clamp(24px, 2.5vw, 32px);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--kohaku-deep);
  margin-bottom: 16px;
  line-height: 1.2;
}

.kohaku-feature-text p {
  font-size: 15px;
  color: var(--kohaku-text);
  line-height: 1.9;
  margin-bottom: 14px;
}

.kohaku-feature-list {
  list-style: none;
  padding: 0;
  margin: 18px 0 0 0;
}

.kohaku-feature-list li {
  padding: 8px 0 8px 24px;
  position: relative;
  font-size: 14px;
  color: var(--kohaku-text);
  line-height: 1.7;
}

.kohaku-feature-list li::before {
  content: '◆';
  position: absolute;
  left: 0;
  top: 8px;
  color: var(--kohaku-gold);
  font-size: 11px;
}

.kohaku-thanks-card {
  max-width: 720px;
  margin: 80px auto;
  background: var(--kohaku-card);
  border-radius: 48px;
  padding: 70px 50px;
  box-shadow: var(--kohaku-shadow);
  text-align: center;
  border: 2px solid var(--kohaku-gold);
}

.kohaku-thanks-card h1 {
  font-family: 'Unbounded', sans-serif;
  font-size: clamp(28px, 3vw, 40px);
  color: var(--kohaku-deep);
  margin-bottom: 18px;
  letter-spacing: 0.04em;
}

.kohaku-thanks-card p {
  font-size: 15px;
  color: var(--kohaku-text);
  line-height: 1.9;
  margin-bottom: 14px;
}

.kohaku-legal-card {
  max-width: 900px;
  margin: 60px auto;
  background: var(--kohaku-card);
  border-radius: 32px;
  padding: 60px 50px;
  box-shadow: var(--kohaku-shadow);
}

.kohaku-legal-card h1 {
  font-family: 'Unbounded', sans-serif;
  font-size: clamp(28px, 3vw, 38px);
  color: var(--kohaku-deep);
  margin-bottom: 28px;
  letter-spacing: 0.04em;
}

.kohaku-legal-card h2 {
  font-family: 'Unbounded', sans-serif;
  font-size: 20px;
  color: var(--kohaku-deep);
  margin: 32px 0 12px 0;
  letter-spacing: 0.04em;
}

.kohaku-legal-card p {
  font-size: 14px;
  color: var(--kohaku-text);
  line-height: 1.85;
  margin-bottom: 14px;
}

.kohaku-legal-card ul {
  margin: 10px 0 18px 0;
  padding-left: 22px;
}

.kohaku-legal-card li {
  font-size: 14px;
  color: var(--kohaku-text);
  line-height: 1.85;
  margin-bottom: 6px;
}

@media (max-width: 1100px) {
  .kohaku-sidebar { width: 80px; padding: 20px 12px; }
  .kohaku-logo-name, .kohaku-logo-sub { display: none; }
  .kohaku-nav-link { justify-content: center; padding: 12px; font-size: 0; }
  /* .kohaku-nav-link .nav-label { display: none; } */
  .kohaku-nav-link .nav-num { font-size: 14px; }
  .kohaku-sidebar-cta { font-size: 0; padding: 14px 8px; }
  .kohaku-sidebar-cta::before { content: '☎'; font-size: 20px; }
  .kohaku-main { margin-left: 80px; }
  .kohaku-footer { margin-left: 80px; padding: 50px 30px 26px 30px; }
  .kohaku-section { padding: 70px 30px; }
  .kohaku-hero { padding: 60px 30px; }
  .kohaku-hero-inner { grid-template-columns: 1fr; }
  .kohaku-bento { grid-template-columns: repeat(2, 1fr); }
  .kohaku-flexgrid { grid-template-columns: repeat(2, 1fr); }
  .kohaku-split, .kohaku-form-grid { grid-template-columns: 1fr; border-radius: 32px; }
  .kohaku-split-img, .kohaku-process-image { min-height: 320px; }
  .kohaku-footer-top { grid-template-columns: 1fr 1fr; gap: 30px; }
  .kohaku-cta-banner { margin: 0 30px; }
  .kohaku-feature-row { grid-template-columns: 1fr; gap: 30px; }
  .kohaku-feature-row.reverse { direction: ltr; }
  .kohaku-process-flow { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .kohaku-sidebar { display: none; }
  .kohaku-kinetic-row { display: none; }
  .kohaku-floating-tag.tl, .kohaku-floating-tag.br { position: static; display: inline-block; margin: 8px 0; }
  .kohaku-main { margin-left: 0; }
  .kohaku-footer { margin-left: 0; border-radius: 24px 24px 0 0; padding: 40px 22px 22px 22px; }
  .kohaku-burger { display: flex; }
  .kohaku-section { padding: 60px 22px; }
  .kohaku-hero { padding: 100px 22px 60px 22px; min-height: auto; }
  .kohaku-hero-title { font-size: 36px; }
  .kohaku-bento { grid-template-columns: 1fr; }
  .kohaku-flexgrid { grid-template-columns: 1fr; }
  .kohaku-footer-top { grid-template-columns: 1fr; }
  .kohaku-cta-banner { margin: 0 22px; padding: 60px 22px; }
  .kohaku-page-hero { padding: 100px 22px 40px 22px; }
  .kohaku-stack-card { grid-template-columns: 1fr; }
  .kohaku-stack-img { min-height: 240px; }
  .kohaku-stack-content { padding: 28px; }
  .kohaku-timeline-row { grid-template-columns: 50px 1fr; }
  .kohaku-timeline-card.left, .kohaku-timeline-card.right { grid-column: 2; text-align: left; }
  .kohaku-timeline-line { left: 24px; }
  .kohaku-coverflow-card { flex: 0 0 88%; padding: 32px 26px; }
  .kohaku-form-side { padding: 40px 24px; }
  .kohaku-cookie-banner { left: 12px; right: 12px; max-width: none; bottom: 12px; }
  .kohaku-legal-card, .kohaku-thanks-card { margin: 30px 16px; padding: 36px 24px; }
  .kohaku-hero-cta { flex-direction: column; }
  .kohaku-hero-cta a { width: 100%; justify-content: center; }
}

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--kohaku-gold); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--kohaku-bronze); }