/* ===== Tokens ===== */
:root {
  --black: #0a0908;
  --charcoal: #141311;
  --surface: #18170f14;
  --surface-solid: #17160f;
  --border: #2b2820;
  --text: #ece7da;
  --text-dim: #9a9384;
  --gold: #b3924f;
  --gold-bright: #d4af37;
  --oxblood: #5c1a22;
  --oxblood-bright: #7a1f2b;
  --font-kanji: 'Noto Serif JP', serif;
  --font-display: 'Cormorant Garamond', serif;
  --font-body: 'Jost', sans-serif;
  --container: 1160px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  background: var(--black);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 17px;
  line-height: 1.75;
  background-image:
    repeating-linear-gradient(115deg, rgba(212,175,55,0.015) 0px, rgba(212,175,55,0.015) 1px, transparent 1px, transparent 90px);
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 28px; }

h1, h2, h3 { font-family: var(--font-display); font-weight: 600; color: var(--text); }

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(10, 9, 8, 0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 90px; }
.logo { display: flex; align-items: center; gap: 14px; }
.logo-mark { font-family: var(--font-kanji); font-size: 1.15rem; color: var(--gold-bright); letter-spacing: 0.05em; }
.logo-text { font-family: var(--font-display); font-size: 1.05rem; letter-spacing: 0.14em; color: var(--text); }
.logo-text em { font-style: normal; color: var(--gold-bright); }

.main-nav { display: flex; align-items: center; gap: 38px; }
.main-nav > a {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-dim);
  transition: color 0.2s;
}
.main-nav > a:hover, .main-nav > a.is-active { color: var(--gold-bright); }

.menu-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 8px; }
.menu-toggle span { width: 24px; height: 1.5px; background: var(--text); transition: 0.25s; }

/* Divisions dropdown (plain button + JS-toggled panel — no native <details>) */
.nav-dropdown { position: relative; }
.dd-summary {
  background: none;
  border: none;
  padding: 0;
  margin: 0;
  font: inherit;
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
}
.dd-summary .dd-label {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-dim);
  transition: color 0.2s;
  display: flex;
  align-items: center;
  gap: 6px;
  pointer-events: none;
}
.dd-summary .dd-label::after {
  content: '';
  width: 5px; height: 5px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
  margin-top: -3px;
  transition: transform 0.2s;
}
.nav-dropdown.is-open .dd-summary .dd-label::after { transform: rotate(-135deg); margin-top: 2px; }
.nav-dropdown:hover .dd-summary .dd-label,
.nav-dropdown.is-open .dd-summary .dd-label,
.dd-summary .dd-label.is-active { color: var(--gold-bright); }

.dropdown-menu {
  display: none;
  list-style: none;
  flex-direction: column;
  z-index: 50;
}
.nav-dropdown.is-open .dropdown-menu { display: flex; }
@media (min-width: 721px) {
  .dropdown-menu {
    position: absolute;
    top: calc(100% + 18px);
    left: 50%;
    transform: translateX(-50%);
    min-width: 260px;
    background: var(--charcoal);
    border: 1px solid var(--border);
    padding: 10px;
    box-shadow: 0 20px 40px -20px rgba(0,0,0,0.6);
  }
  .dropdown-menu li a {
    display: block;
    padding: 12px 14px;
    font-size: 0.8rem;
    text-transform: none;
    letter-spacing: 0.02em;
    color: var(--text-dim);
    transition: background 0.15s, color 0.15s;
  }
  .dropdown-menu li a:hover, .dropdown-menu li a.is-active { background: rgba(212,175,55,0.08); color: var(--gold-bright); }
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 90px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse at 50% 15%, rgba(122,31,43,0.28), transparent 55%),
    radial-gradient(ellipse at 85% 85%, rgba(212,175,55,0.08), transparent 50%),
    linear-gradient(180deg, #050504 0%, var(--black) 60%);
}
.hero-seal {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: min(70vw, 640px);
  height: min(70vw, 640px);
  color: var(--gold-bright);
  opacity: 0.06;
  z-index: 0;
}
.seal-glyph { font-family: var(--font-display); font-weight: 700; font-size: 40px; fill: currentColor; }

.hero-content { position: relative; z-index: 2; text-align: center; }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.35em;
  font-size: 0.78rem;
  color: var(--gold-bright);
  font-weight: 500;
  margin-bottom: 26px;
}
.hero-title {
  font-size: clamp(3rem, 8.5vw, 6.4rem);
  font-weight: 600;
  letter-spacing: 0.05em;
  line-height: 1.08;
  color: var(--text);
  margin-bottom: 28px;
}
.hero-sub {
  max-width: 600px;
  margin: 0 auto 46px;
  color: var(--text-dim);
  font-size: 1.1rem;
  font-weight: 300;
}
.hero-cta { display: flex; gap: 18px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 16px 38px;
  font-family: var(--font-body);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.82rem;
  border-radius: 1px;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s, color 0.2s, border-color 0.2s;
  border: 1px solid transparent;
}
.btn-primary {
  background: linear-gradient(120deg, var(--gold-bright), var(--gold));
  color: #14120b;
  box-shadow: 0 10px 30px -10px rgba(212,175,55,0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 34px -8px rgba(212,175,55,0.5); }
.btn-ghost { border-color: var(--border); color: var(--text); }
.btn-ghost:hover { border-color: var(--gold-bright); color: var(--gold-bright); }

/* ===== Page hero (subpages) ===== */
.page-hero {
  position: relative;
  padding: 180px 0 90px;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.page-hero .hero-bg {
  background:
    radial-gradient(ellipse at 20% 0%, rgba(122,31,43,0.22), transparent 55%),
    radial-gradient(ellipse at 90% 100%, rgba(212,175,55,0.07), transparent 50%),
    linear-gradient(180deg, #050504 0%, var(--black) 100%);
}
.breadcrumb {
  position: relative;
  z-index: 2;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  margin-bottom: 22px;
}
.breadcrumb a { color: var(--text-dim); transition: color 0.2s; }
.breadcrumb a:hover { color: var(--gold-bright); }
.breadcrumb span { color: var(--gold-bright); }
.page-hero .division-index { position: relative; z-index: 2; margin-bottom: 18px; font-size: 0.95rem; }
.page-hero h1 {
  position: relative;
  z-index: 2;
  font-size: clamp(2.2rem, 6vw, 3.6rem);
  letter-spacing: 0.02em;
  max-width: 780px;
}
.page-hero .hero-sub {
  position: relative;
  z-index: 2;
  margin: 22px 0 0;
  max-width: 640px;
}

/* ===== Division detail page ===== */
.detail-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 70px; }
.detail-list { list-style: none; display: flex; flex-direction: column; gap: 26px; }
.detail-list li { border-top: 1px solid var(--border); padding-top: 20px; }
.detail-list h3 { font-size: 1.1rem; color: var(--gold-bright); margin-bottom: 10px; }
.detail-list p { color: var(--text-dim); font-size: 0.96rem; }
.detail-aside {
  background: var(--charcoal);
  border: 1px solid var(--border);
  padding: 36px 32px;
  align-self: start;
}
.detail-aside h3 { font-size: 1.05rem; margin-bottom: 16px; }
.detail-aside p { color: var(--text-dim); font-size: 0.94rem; margin-bottom: 24px; }
.detail-aside .btn { width: 100%; text-align: center; }

.division-nav {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin-top: 90px;
}
.division-nav a {
  background: var(--black);
  padding: 28px 26px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: background 0.2s;
}
.division-nav a:hover { background: var(--charcoal); }
.division-nav a.is-current { background: var(--charcoal); border-left: 2px solid var(--gold-bright); }
.division-nav .nav-label { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--gold-bright); }
.division-nav .nav-title { font-family: var(--font-display); font-size: 1.1rem; }

/* ===== Legal / Privacy content ===== */
.legal-content { max-width: 760px; margin: 0 auto; }
.legal-content h2 { font-size: 1.5rem; margin: 46px 0 16px; }
.legal-content h2:first-child { margin-top: 0; }
.legal-content p, .legal-content li { color: var(--text-dim); font-size: 0.97rem; margin-bottom: 14px; }
.legal-content ul, .legal-content ol { padding-left: 22px; margin-bottom: 14px; }
.legal-content strong { color: var(--text); }
.legal-updated { color: var(--text-dim); font-size: 0.85rem; margin-bottom: 50px; font-style: italic; }
.legal-notice {
  border: 1px solid var(--border);
  background: var(--charcoal);
  padding: 22px 26px;
  margin-bottom: 46px;
  font-size: 0.9rem;
  color: var(--text-dim);
}
.legal-notice strong { color: var(--gold-bright); }

/* ===== Sections ===== */
.section { padding: 120px 0; position: relative; z-index: 1; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 64px; }
.kicker {
  text-transform: uppercase;
  letter-spacing: 0.3em;
  font-size: 0.76rem;
  color: var(--gold-bright);
  font-weight: 500;
  margin-bottom: 16px;
}
.section-head h2 { font-size: clamp(1.9rem, 4vw, 2.7rem); }
.section-sub { color: var(--text-dim); margin-top: 14px; }

/* ===== Philosophy ===== */
.philosophy { background: var(--charcoal); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.philosophy-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 70px; align-items: center; }
.philosophy-text p { color: var(--text-dim); margin-bottom: 18px; }
.philosophy-text h2 { margin-bottom: 22px; }
.philosophy-quote {
  border-left: 2px solid var(--gold-bright);
  padding-left: 30px;
}
.philosophy-quote p {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.5rem;
  color: var(--text);
  margin-bottom: 16px;
  line-height: 1.4;
}
.philosophy-quote cite {
  font-style: normal;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gold-bright);
}

/* ===== Home teasers (Philosophy / Portfolio / Approach) ===== */
.teaser-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1px; background: var(--border); border: 1px solid var(--border); }
.teaser-card { display: block; background: var(--black); padding: 42px 34px; transition: background 0.2s; }
.teaser-card:hover { background: var(--charcoal); }
.teaser-card:hover h3 { color: var(--gold-bright); }
.teaser-card .kicker { margin-bottom: 14px; }
.teaser-card h3 { font-size: 1.3rem; margin-bottom: 14px; transition: color 0.2s; }
.teaser-card p { color: var(--text-dim); font-size: 0.96rem; margin-bottom: 20px; }
.teaser-card .teaser-link { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--gold-bright); }

/* ===== Divisions ===== */
.divisions-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1px; background: var(--border); border: 1px solid var(--border); }
.division-card { display: block; background: var(--black); padding: 42px 34px; transition: background 0.2s; }
.division-card:hover { background: var(--charcoal); }
.division-card:hover h3 { color: var(--gold-bright); }
.division-index { display: block; font-family: var(--font-display); font-weight: 700; color: var(--gold-bright); font-size: 0.95rem; letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 20px; }
.division-card h3 { font-size: 1.25rem; margin-bottom: 14px; transition: color 0.2s; }
.division-card p { color: var(--text-dim); font-size: 0.96rem; }

/* ===== Portfolio ===== */
.portfolio { background: linear-gradient(180deg, var(--black), #12100c 50%, var(--black)); }
.section-head.light .kicker { color: var(--gold-bright); }
.portfolio-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 24px; }
.portfolio-card {
  background: var(--charcoal);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 40px 30px;
  text-align: center;
  transition: transform 0.25s, border-color 0.25s;
}
.portfolio-card:hover { transform: translateY(-4px); border-color: var(--gold); }
.portfolio-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px; height: 56px;
  border: 1px solid var(--gold-bright);
  border-radius: 50%;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--gold-bright);
  margin-bottom: 20px;
}
.portfolio-card h3 { font-size: 1.05rem; margin-bottom: 10px; letter-spacing: 0.04em; }
.portfolio-card p { color: var(--text-dim); font-size: 0.85rem; font-style: italic; }

/* ===== Approach ===== */
.approach-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 40px; }
.approach-item { border-top: 1px solid var(--border); padding-top: 24px; }
.approach-item h3 { font-size: 1.1rem; color: var(--gold-bright); margin-bottom: 12px; }
.approach-item p { color: var(--text-dim); font-size: 0.95rem; }

/* ===== Contact ===== */
.contact { background: var(--charcoal); border-top: 1px solid var(--border); }
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 70px; }
.contact-desc { color: var(--text-dim); margin: 18px 0 34px; }
.info-list { list-style: none; display: flex; flex-direction: column; gap: 18px; }
.info-list li { display: flex; flex-direction: column; gap: 3px; border-bottom: 1px solid var(--border); padding-bottom: 14px; }
.info-list strong { font-family: var(--font-display); font-size: 1.05rem; color: var(--text); }
.info-list span { color: var(--text-dim); font-size: 0.92rem; }

.contact-form {
  background: var(--black);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 42px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.contact-form label {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
}
.contact-form input,
.contact-form select,
.contact-form textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 1px;
  background: var(--charcoal);
  color: var(--text);
  resize: vertical;
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus { outline: none; border-color: var(--gold-bright); }
.contact-form button { margin-top: 6px; cursor: pointer; }
.form-note { font-size: 0.82rem; color: var(--gold-bright); min-height: 1em; }

/* ===== Footer ===== */
.site-footer { padding: 50px 0; border-top: 1px solid var(--border); }
.footer-inner { display: flex; flex-direction: column; align-items: center; gap: 16px; text-align: center; }
.footer-brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-size: 1rem; letter-spacing: 0.06em; }
.footer-nav { display: flex; gap: 26px; flex-wrap: wrap; justify-content: center; }
.footer-nav a { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-dim); transition: color 0.2s; }
.footer-nav a:hover { color: var(--gold-bright); }
.footer-disclaimer { max-width: 720px; color: var(--text-dim); font-size: 0.76rem; line-height: 1.6; opacity: 0.75; }
.footer-inner > p:last-child { color: var(--text-dim); font-size: 0.78rem; }

/* ===== Scroll reveal ===== */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .philosophy-grid, .contact-grid, .detail-grid { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .main-nav {
    position: fixed;
    top: 90px; left: 0; right: 0;
    background: rgba(10,9,8,0.98);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    padding: 20px 28px 28px;
    gap: 18px;
    max-height: calc(100vh - 90px);
    overflow-y: auto;
    transform: translateY(-130%);
    transition: transform 0.3s ease;
  }
  .main-nav.is-open { transform: translateY(0); }
  .menu-toggle { display: flex; }
  .section { padding: 84px 0; }
  .page-hero { padding: 150px 0 70px; }

  .dropdown-menu {
    padding-left: 16px;
    border-left: 1px solid var(--border);
    margin-top: 14px;
    gap: 12px;
  }
  .dropdown-menu li a { font-size: 0.8rem; color: var(--text-dim); }
  .dropdown-menu li a:hover, .dropdown-menu li a.is-active { color: var(--gold-bright); }
}