* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --ink: #111111;
  --ink-soft: #333333;
  --ink-mute: #7a7a7a;
  --paper: #fafaf7;
  --paper-warm: #f4f1ea;
  --line: #dcdad3;
  --accent: #2b2a26;
}
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans JP', 'Helvetica Neue', sans-serif;
  background: var(--paper);
  color: var(--ink);
  font-weight: 300;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
.serif { font-family: 'Cormorant Garamond', 'Noto Serif JP', serif; font-weight: 300; letter-spacing: -0.01em; }
.serif-jp { font-family: 'Noto Serif JP', serif; font-weight: 300; }
.mono { font-family: 'JetBrains Mono', monospace; font-weight: 300; letter-spacing: 0.02em; }

/* Nav */
nav {
  position: fixed; top: 0; left: 0; right: 0;
  padding: 24px 48px;
  display: flex; justify-content: space-between; align-items: center;
  z-index: 100;
  background: rgba(250, 250, 247, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease;
}
nav.scrolled { border-bottom-color: var(--line); }
.logo {
  display: inline-flex; align-items: center;
  text-decoration: none; color: var(--ink);
  transition: opacity 0.2s;
}
.logo:hover { opacity: 0.7; }
.logo img { height: 32px; width: auto; display: block; transition: height 0.3s; }
nav.scrolled .logo img { height: 26px; }
.footer-brand .logo img { height: 42px; }
.nav-links {
  display: flex; gap: 40px; list-style: none;
  font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase;
}
.nav-links a {
  color: var(--ink-soft); text-decoration: none;
  transition: opacity 0.2s;
}
.nav-links a:hover, .nav-links a.active { opacity: 0.5; }
.nav-links a.active { color: var(--ink); opacity: 1; font-weight: 500; }
.nav-right { display: flex; align-items: center; gap: 32px; }
.lang-switch { display: flex; gap: 8px; font-family: 'JetBrains Mono', monospace; font-size: 11px; letter-spacing: 0.1em; }
.lang-switch button {
  background: none; border: none; cursor: pointer;
  color: var(--ink-mute); padding: 4px 6px;
  font-family: inherit; font-size: inherit;
  transition: color 0.2s;
}
.lang-switch button.active { color: var(--ink); }
.lang-switch .divider { color: var(--ink-mute); }

/* Sections */
section { padding: 120px 48px; position: relative; }

/* Page hero (subpages) */
.page-hero {
  padding: 180px 48px 100px;
  background: #e8dcc2;
  border-bottom: 1px solid rgba(26, 24, 21, 0.15);
}
.breadcrumb { font-size: 11px; color: var(--ink-mute); letter-spacing: 0.15em; margin-bottom: 40px; }
.page-title {
  font-size: clamp(48px, 5.5vw, 96px);
  line-height: 1; letter-spacing: -0.02em;
  word-break: keep-all; line-break: strict; overflow-wrap: anywhere;
}
.page-title em { font-style: italic; color: var(--ink-mute); }
.page-title .jp {
  display: block; font-family: 'Noto Serif JP', serif;
  font-size: 0.22em; margin-top: 32px; color: var(--ink-soft);
  letter-spacing: 0.1em; font-weight: 300;
}

/* Section header */
.section-header {
  display: grid; grid-template-columns: 1fr 3fr; gap: 80px;
  margin-bottom: 80px;
  border-top: 1px solid var(--line);
  padding-top: 40px;
}
.section-num { font-family: 'JetBrains Mono', monospace; font-size: 11px; letter-spacing: 0.15em; color: var(--ink-mute); }
.section-title {
  font-family: 'Cormorant Garamond', 'Noto Serif JP', serif;
  font-weight: 300; font-size: clamp(40px, 5vw, 72px);
  line-height: 1; letter-spacing: -0.02em;
}
.section-title .jp {
  display: block; font-family: 'Noto Serif JP', serif;
  font-size: 0.32em; color: var(--ink-mute);
  margin-top: 20px; letter-spacing: 0.1em; font-weight: 300;
}

/* Split section */
.split-section { display: grid; grid-template-columns: 1fr 3fr; gap: 80px; }
.split-left .section-label { position: sticky; top: 120px; font-size: 11px; color: var(--ink-mute); letter-spacing: 0.15em; }
.lead-para {
  font-size: clamp(28px, 3.2vw, 44px);
  line-height: 1.35; margin-bottom: 60px;
  max-width: 900px;
}
.lead-para em { font-style: italic; color: var(--ink-mute); }
.prose { max-width: 720px; }
.prose p { font-size: 15px; line-height: 1.9; color: var(--ink-soft); margin-bottom: 24px; }
.prose p em { font-style: italic; color: var(--ink); }
.signature { margin-top: 48px !important; font-size: 11px !important; color: var(--ink-mute) !important; letter-spacing: 0.15em; }

/* Founder signature — two-line inside .prose */
.signature-name {
  margin-top: 56px !important;
  font-size: 22px !important;
  color: var(--ink) !important;
  font-family: 'Cormorant Garamond', serif !important;
  font-weight: 400;
  letter-spacing: 0.02em;
  font-style: normal;
}
.signature-name + .signature {
  margin-top: 4px !important;
}

/* Info table */
.info-table { max-width: 1000px; }
.info-row {
  display: grid; grid-template-columns: 240px 1fr;
  gap: 40px; padding: 28px 0;
  border-top: 1px solid var(--line);
}
.info-row:last-child { border-bottom: 1px solid var(--line); }
.info-row dt { font-size: 11px; color: var(--ink-mute); letter-spacing: 0.15em; text-transform: uppercase; padding-top: 4px; }
.info-row dd { font-size: 16px; color: var(--ink); line-height: 1.7; }
.info-row dd a { color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--line); }

/* Timeline */
.timeline { list-style: none; }
.timeline-item {
  display: grid; grid-template-columns: 240px 1fr;
  gap: 40px; padding: 48px 0;
  border-top: 1px solid var(--line);
}
.timeline-item:last-child { border-bottom: 1px solid var(--line); }
.timeline-item .year { font-size: 48px; line-height: 1; color: var(--ink); }
.timeline-item .entry h4 { font-size: 11px; letter-spacing: 0.15em; color: var(--ink-mute); text-transform: uppercase; margin-bottom: 12px; font-weight: 400; }
.timeline-item .entry p { font-size: 15px; line-height: 1.8; color: var(--ink-soft); max-width: 640px; }

/* Services page */
.service-block {
  display: grid; grid-template-columns: 1fr 2fr;
  gap: 80px;
  padding: 100px 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: 80px;
}
.service-block .service-index { font-family: 'JetBrains Mono', monospace; font-size: 11px; letter-spacing: 0.15em; color: var(--ink-mute); margin-bottom: 24px; }
.service-block h3 {
  font-family: 'Cormorant Garamond', 'Noto Serif JP', serif;
  font-size: 56px; font-weight: 300; line-height: 1.05;
  letter-spacing: -0.02em;
}
.service-block h3 em { font-style: italic; color: var(--ink-mute); }
.service-block h3 .jp {
  display: block; font-family: 'Noto Sans JP', sans-serif;
  font-size: 14px; color: var(--ink-mute);
  margin-top: 16px; letter-spacing: 0.05em;
}
.service-block .service-body p {
  font-size: 15px; line-height: 1.9; color: var(--ink-soft);
  margin-bottom: 24px; max-width: 640px;
}
.service-features {
  list-style: none; margin-top: 40px;
  padding-top: 32px; border-top: 1px solid var(--line);
}
.service-features li {
  display: grid; grid-template-columns: 32px 1fr;
  gap: 16px; padding: 12px 0;
  font-size: 14px; color: var(--ink-soft);
}
.service-features li::before {
  content: '→'; font-family: serif; color: var(--ink-mute);
}

/* Model blocks (Brand section — two engagement models) */
.model-blocks {
  margin: 48px 0 40px;
  border-top: 1px solid var(--line);
}
.model {
  padding: 40px 0;
  border-bottom: 1px solid var(--line);
}
.model-tag {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--ink-mute);
  margin-bottom: 14px;
}
.model h4 {
  font-family: 'Cormorant Garamond', 'Noto Serif JP', serif;
  font-size: 26px;
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.2;
  color: var(--ink);
  margin-bottom: 20px;
}
.model p {
  font-family: 'Noto Serif JP', serif;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
  margin-bottom: 16px;
  max-width: 640px;
}
.model p em {
  font-style: italic;
  color: var(--ink);
  font-weight: 400;
}
.model-record {
  font-family: 'Cormorant Garamond', 'Noto Serif JP', serif;
  font-style: italic;
  font-size: 14px !important;
  color: var(--ink-mute) !important;
  margin-top: 8px !important;
  margin-bottom: 0 !important;
}
.model-scope {
  list-style: none;
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px 32px;
  max-width: 640px;
}
.model-scope li {
  font-size: 14px;
  color: var(--ink-soft);
  padding: 6px 0;
  position: relative;
  padding-left: 20px;
}
.model-scope li::before {
  content: '·';
  position: absolute;
  left: 4px;
  color: var(--ink-mute);
  font-weight: bold;
}

@media (max-width: 1024px) {
  .model-scope { grid-template-columns: 1fr; gap: 4px; }
}

/* CTA */
#contact-cta, #contact { padding: 160px 48px 60px; background: #6d5943; color: var(--paper); }
#contact-cta .cta-block .tag { color: rgba(247, 244, 238, 0.65); }
#contact-cta .cta-block h2 { color: var(--paper); }
#contact-cta .cta-block h2 em { color: rgba(247, 244, 238, 0.6); }
#contact-cta .cta-block .jp { color: rgba(247, 244, 238, 0.78); }
#contact-cta .cta-button { background: var(--paper); color: #6d5943; }
#contact-cta .cta-button:hover { background: #ede4cf; }
.cta-block { text-align: center; max-width: 900px; margin: 0 auto 120px; }
.cta-block .tag { font-size: 11px; color: var(--ink-mute); letter-spacing: 0.15em; margin-bottom: 32px; }
.cta-block h2 { font-size: clamp(48px, 6vw, 88px); font-weight: 300; line-height: 1.05; letter-spacing: -0.02em; margin-bottom: 32px; }
.cta-block h2 em { font-style: italic; color: var(--ink-mute); }
.cta-block .jp { font-family: 'Noto Serif JP', serif; font-size: 15px; color: var(--ink-soft); letter-spacing: 0.05em; margin-bottom: 48px; }
.cta-button {
  display: inline-flex; align-items: center; gap: 16px;
  padding: 20px 40px;
  background: var(--ink); color: var(--paper);
  text-decoration: none; font-size: 12px;
  letter-spacing: 0.15em; text-transform: uppercase;
  transition: background 0.2s;
}
.cta-button:hover { background: #333; }
.cta-button svg { transition: transform 0.3s; }
.cta-button:hover svg { transform: translateX(6px); }

/* Footer */
footer { padding: 80px 48px 40px; background: var(--paper-warm); border-top: 1px solid var(--line); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 60px; margin-bottom: 80px; }
.footer-brand .logo { margin-bottom: 24px; display: block; }
.footer-brand p { font-size: 13px; color: var(--ink-soft); line-height: 1.8; max-width: 320px; }
.footer-col h4 { font-family: 'JetBrains Mono', monospace; font-size: 10px; letter-spacing: 0.15em; color: var(--ink-mute); text-transform: uppercase; margin-bottom: 20px; font-weight: 400; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: var(--ink-soft); text-decoration: none; font-size: 13px; transition: color 0.2s; }
.footer-col a:hover { color: var(--ink); }
.footer-bottom { padding-top: 32px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; font-family: 'JetBrains Mono', monospace; font-size: 10px; color: var(--ink-mute); letter-spacing: 0.05em; }

/* Language */
[data-en], [data-ja], [data-zh] { display: none; }
html[lang="ja"] [data-ja] { display: inline; }
html[lang="ja"] [data-ja].block { display: block; }
html[lang="zh"] [data-zh] { display: inline; }
html[lang="zh"] [data-zh].block { display: block; }

/* CJK line-break rules — prevent awkward mid-word breaks in Japanese & Chinese */
html[lang="ja"], html[lang="zh"] {
  word-break: keep-all;
  line-break: strict;
  overflow-wrap: anywhere;
}
/* Traditional Chinese uses TC fonts */
html[lang="zh"] body,
html[lang="zh"] .prose,
html[lang="zh"] .about-detail {
  font-family: 'Noto Sans TC', 'Noto Sans JP', 'Helvetica Neue', sans-serif;
}
html[lang="zh"] .serif,
html[lang="zh"] h1, html[lang="zh"] h2, html[lang="zh"] h3, html[lang="zh"] h4,
html[lang="zh"] .section-title, html[lang="zh"] .page-title,
html[lang="zh"] .lead-para {
  font-family: 'Cormorant Garamond', 'Noto Serif TC', 'Noto Serif JP', serif;
}
html[lang="en"] [data-en] { display: inline; }
html[lang="en"] [data-en].block { display: block; }

@media (max-width: 1024px) {
  nav { padding: 20px 24px; }
  .nav-links { display: none; }
  section, .page-hero { padding: 80px 24px; }
  .page-hero { padding: 120px 24px 60px; }
  .section-header, .split-section { grid-template-columns: 1fr; gap: 24px; }
  .info-row, .timeline-item, .service-block { grid-template-columns: 1fr; gap: 12px; }
  .service-block { padding: 60px 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}