/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --black: #0c0c0c;
  --white: #ffffff;
  --gray-50:  #fafafa;
  --gray-100: #f3f3f3;
  --gray-200: #e6e6e6;
  --gray-400: #aaa;
  --gray-600: #5a5a5a;
  --gray-800: #222;
  --accent: #b49a7e;
  --font-jp: 'Be Vietnam Pro', 'Noto Sans JP', sans-serif;
  --font-en: 'Inter', 'Be Vietnam Pro', sans-serif;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --transition: 0.3s var(--ease);
}

html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-en);
  color: var(--black);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
img { display: block; width: 100%; object-fit: cover; }
ul { list-style: none; }

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 48px;
  height: 72px;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), height var(--transition), box-shadow var(--transition);
}
.header.scrolled {
  height: 60px;
  border-bottom-color: var(--gray-200);
  box-shadow: 0 1px 24px rgba(0,0,0,0.06);
}

.logo { display: flex; align-items: center; }
.logo-img { height: 57px; width: 180px; display: block; object-fit: contain; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav-item { position: relative; }
.nav-link {
  display: block;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gray-800);
  padding: 8px 16px;
  transition: color var(--transition);
}
.nav-link:hover, .nav-link.active { color: var(--accent); }

/* ===== Language switch ===== */
.lang-switch {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 14px;
  padding-left: 14px;
  border-left: 1px solid var(--gray-200);
}
.lang-switch .lang-opt {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--gray-400);
  padding: 2px 4px;
  transition: color var(--transition);
}
.lang-switch .lang-opt:hover { color: var(--gray-800); }
.lang-switch .lang-opt.active { color: var(--accent); }
.lang-switch .lang-sep { color: var(--gray-200); font-size: 11px; }
.mobile-lang {
  display: flex !important;
  align-items: center;
  gap: 8px;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--gray-200);
}
.mobile-lang .lang-opt {
  font-family: var(--font-en);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--gray-400);
}
.mobile-lang .lang-opt.active { color: var(--accent); }
.mobile-lang .lang-sep { color: var(--gray-200); }

.dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--white);
  border: 1px solid var(--gray-200);
  min-width: 190px;
  padding: 8px 0;
  padding-top: 16px;
  margin-top: 0;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.2s;
  box-shadow: 0 8px 32px rgba(0,0,0,0.08);
}
.dropdown::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 8px;
  background: transparent;
}
.nav-item:hover .dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}
.dropdown a {
  display: block;
  padding: 9px 20px;
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--gray-600);
  transition: color var(--transition), background var(--transition);
}
.dropdown a:hover { color: var(--black); background: var(--gray-50); }

/* Hamburger */
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 6px; }
.hamburger span { display: block; width: 22px; height: 1.5px; background: var(--black); transition: var(--transition); }
.hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(4.5px, 4.5px); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(4.5px, -4.5px); }

/* Mobile nav */
.mobile-nav {
  display: none;
  position: fixed;
  top: 72px; left: 0; right: 0; bottom: 0;
  background: var(--white);
  z-index: 999;
  padding: 32px 40px;
  overflow-y: auto;
}
.mobile-nav.open { display: block; }
.mobile-nav-item { border-bottom: 1px solid var(--gray-200); }
.mobile-nav-link {
  display: block;
  padding: 16px 0;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
}
.mobile-nav-sub { padding: 0 0 12px 16px; }
.mobile-nav-sub a {
  display: block;
  padding: 8px 0;
  font-size: 12px;
  color: var(--gray-600);
  letter-spacing: 1px;
}

/* ===== HERO ===== */
.hero {
  height: 100vh;
  min-height: 600px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
}

.hero-slider { position: absolute; inset: 0; }
.hero-slide { position: absolute; inset: 0; opacity: 0; transition: opacity 1.4s ease; }
.hero-slide.active { opacity: 1; }
.hero-slide img { width: 100%; height: 100%; object-fit: cover; }
.hero-slide::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,0,0,0.45) 0%, rgba(0,0,0,0.1) 60%, transparent 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 0 72px 100px;
  color: var(--white);
}
.hero-tagline {
  font-size: 10px;
  letter-spacing: 5px;
  text-transform: uppercase;
  opacity: 0.7;
  margin-bottom: 20px;
}
.hero-title {
  font-family: var(--font-en);
  font-size: clamp(36px, 5.5vw, 72px);
  font-weight: 200;
  letter-spacing: 4px;
  line-height: 1.15;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.hero-title span { display: block; }
.hero-subtitle {
  font-family: var(--font-jp);
  font-size: clamp(11px, 1.4vw, 15px);
  font-weight: 300;
  letter-spacing: 4px;
  opacity: 0.8;
  margin-bottom: 40px;
}
.hero-scroll {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 9px;
  letter-spacing: 4px;
  text-transform: uppercase;
  opacity: 0.6;
}
.hero-scroll-line {
  width: 56px;
  height: 1px;
  background: rgba(255,255,255,0.4);
  position: relative;
  overflow: hidden;
}
.hero-scroll-line::after {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%;
  height: 100%;
  background: var(--white);
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine { to { left: 100%; } }

/* Slide indicators */
.hero-indicators {
  position: absolute;
  bottom: 40px;
  right: 72px;
  z-index: 3;
  display: flex;
  gap: 8px;
}
.hero-dot {
  width: 24px;
  height: 2px;
  background: rgba(255,255,255,0.3);
  border: none;
  cursor: pointer;
  transition: background var(--transition), width var(--transition);
  padding: 0;
}
.hero-dot.active { background: var(--white); width: 40px; }

/* Slide counter */
.hero-counter {
  position: absolute;
  right: 72px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.6);
  font-size: 11px;
  letter-spacing: 2px;
}
.hero-counter-sep {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.2);
}

/* ===== Concept Strip ===== */
.concept-strip {
  background: var(--black);
  color: var(--white);
  padding: 0 72px;
}
.concept-strip-inner {
  display: flex;
  align-items: center;
  gap: 48px;
  padding: 40px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.concept-number {
  font-size: clamp(36px, 5vw, 60px);
  font-weight: 200;
  letter-spacing: 2px;
  color: var(--accent);
  flex-shrink: 0;
}
.concept-divider {
  width: 1px;
  height: 56px;
  background: rgba(255,255,255,0.1);
  flex-shrink: 0;
}
.concept-body { flex: 1; }
.concept-label {
  font-size: 10px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}
.concept-text {
  font-family: var(--font-jp);
  font-size: 13px;
  color: rgba(255,255,255,0.65);
  line-height: 1.9;
}
.concept-link {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  white-space: nowrap;
  flex-shrink: 0;
  transition: color var(--transition);
  border-bottom: 1px solid rgba(255,255,255,0.15);
  padding-bottom: 2px;
}
.concept-link:hover { color: var(--white); border-bottom-color: var(--white); }

/* ===== Section commons ===== */
.section { padding: 100px 72px; }
.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 64px;
}
.section-label {
  font-size: 9px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(28px, 3.5vw, 46px);
  font-weight: 200;
  letter-spacing: 3px;
  text-transform: uppercase;
  line-height: 1.15;
}
.section-title-jp {
  font-family: var(--font-jp);
  font-size: 12px;
  color: var(--gray-600);
  letter-spacing: 3px;
  margin-top: 8px;
}
.view-all {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 10px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--gray-800);
  border-bottom: 1px solid var(--gray-800);
  padding-bottom: 2px;
  white-space: nowrap;
  transition: color var(--transition), border-color var(--transition);
}
.view-all:hover { color: var(--accent); border-bottom-color: var(--accent); }

/* ===== Projects Mosaic ===== */
.projects-mosaic {
  display: grid;
  grid-template-columns: 3fr 2fr;
  grid-template-rows: auto auto;
  gap: 3px;
}
.project-tile { position: relative; overflow: hidden; cursor: pointer; }
.project-tile--hero { grid-row: span 2; }
.project-tile a { display: block; height: 100%; }
.project-tile img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  transition: transform 0.8s var(--ease);
}
.project-tile--hero img { height: 100%; min-height: 600px; }
.project-tile:hover img { transform: scale(1.04); }

.project-tile-info {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 32px 28px 24px;
  background: linear-gradient(to top, rgba(0,0,0,0.75) 0%, rgba(0,0,0,0.3) 60%, transparent 100%);
  color: var(--white);
  transform: translateY(8px);
  opacity: 0;
  transition: transform 0.4s var(--ease), opacity 0.4s var(--ease);
}
.project-tile:hover .project-tile-info { transform: translateY(0); opacity: 1; }
.project-tile-cat {
  font-size: 9px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 6px;
}
.project-tile-title { font-size: 15px; font-weight: 300; letter-spacing: 1px; }
.project-tile-title-jp {
  font-family: var(--font-jp);
  font-size: 11px;
  opacity: 0.75;
  margin-top: 4px;
}

/* ===== About Section ===== */
.about-section { background: var(--gray-50); }
.about-section-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
}
.about-section-image {
  position: relative;
  overflow: hidden;
}
.about-section-image img { width: 100%; height: 560px; object-fit: cover; transition: transform 0.8s var(--ease); }
.about-section-image:hover img { transform: scale(1.03); }
.about-section-image-label {
  position: absolute;
  bottom: 24px;
  right: 24px;
  background: rgba(0,0,0,0.6);
  color: rgba(255,255,255,0.8);
  font-size: 9px;
  letter-spacing: 3px;
  text-transform: uppercase;
  padding: 6px 14px;
}
.about-section-text { padding: 80px 72px; }
.about-text-jp {
  font-family: var(--font-jp);
  font-size: 14px;
  line-height: 2.2;
  color: var(--gray-800);
  margin: 24px 0 16px;
}
.about-text-en {
  font-size: 12px;
  line-height: 1.9;
  color: var(--gray-600);
  letter-spacing: 0.3px;
  margin-bottom: 36px;
}
.btn-arrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 10px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--black);
  border-bottom: 1px solid var(--black);
  padding-bottom: 4px;
  transition: color var(--transition), border-color var(--transition);
}
.btn-arrow:hover { color: var(--accent); border-color: var(--accent); }

/* ===== Fields / Categories ===== */
.fields-section { background: var(--white); padding: 100px 72px; }
.fields-inner {}
.fields-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}
.field-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 48px 36px;
  border: 1px solid var(--gray-200);
  background: var(--white);
  transition: background var(--transition), color var(--transition);
  cursor: pointer;
  overflow: hidden;
}
.field-card:hover { background: var(--black); color: var(--white); }
.field-card-num {
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--accent);
  margin-bottom: 32px;
}
.field-card-icon {
  width: 40px;
  height: 40px;
  margin-bottom: 20px;
  transition: transform var(--transition);
}
.field-card:hover .field-card-icon { transform: scale(1.1); }
.field-card-icon svg { width: 40px; height: 40px; }
.field-card-name {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.field-card-name-jp {
  font-family: var(--font-jp);
  font-size: 12px;
  color: var(--gray-600);
  margin-bottom: auto;
}
.field-card:hover .field-card-name-jp { color: rgba(255,255,255,0.6); }
.field-card-arrow {
  margin-top: 32px;
  font-size: 18px;
  color: var(--accent);
  transition: transform var(--transition);
}
.field-card:hover .field-card-arrow { transform: translateX(6px); }

/* ===== News ===== */
.news-section { background: var(--white); }
.news-list { display: flex; flex-direction: column; }
.news-item {
  display: flex;
  align-items: baseline;
  gap: 28px;
  padding: 22px 0;
  border-bottom: 1px solid var(--gray-200);
  transition: background var(--transition);
  cursor: pointer;
}
.news-item:first-child { border-top: 1px solid var(--gray-200); }
.news-item:hover .news-title { color: var(--accent); }
.news-date {
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--gray-400);
  white-space: nowrap;
  min-width: 88px;
}
.news-tag {
  font-size: 9px;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 3px 10px;
  white-space: nowrap;
  background: var(--black);
  color: var(--white);
}
.news-tag--award  { background: #b08b40; }
.news-tag--media  { background: #3a6e4a; }
.news-tag--event  { background: #5a4e8e; }
.news-tag--recruit{ background: #c04040; }
.news-title {
  font-family: var(--font-jp);
  font-size: 14px;
  flex: 1;
  transition: color var(--transition);
  line-height: 1.6;
}

/* ===== CTA Banner ===== */
.cta-banner {
  background: var(--black);
  color: var(--white);
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: 'CONTACT';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: clamp(80px, 16vw, 200px);
  font-weight: 900;
  letter-spacing: -8px;
  color: rgba(255,255,255,0.03);
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
}
.cta-banner-inner {
  padding: 120px 72px;
  text-align: center;
  position: relative;
  z-index: 1;
}
.cta-label {
  font-size: 9px;
  letter-spacing: 5px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}
.cta-title {
  font-size: clamp(22px, 3.5vw, 42px);
  font-weight: 200;
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.cta-jp {
  font-family: var(--font-jp);
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  letter-spacing: 3px;
  margin-bottom: 48px;
}
.cta-btn {
  display: inline-block;
  padding: 16px 52px;
  border: 1px solid rgba(255,255,255,0.5);
  color: var(--white);
  font-size: 10px;
  letter-spacing: 4px;
  text-transform: uppercase;
  transition: background var(--transition), border-color var(--transition);
}
.cta-btn:hover { background: var(--white); color: var(--black); border-color: var(--white); }

/* ===== Footer ===== */
.footer { background: var(--black); color: var(--white); padding: 80px 72px 40px; }
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 60px;
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 40px;
}
.footer-brand {}
.footer-logo-img {
  height: 40px;
  width: auto;
  display: block;
  margin-bottom: 20px;
  filter: brightness(0) invert(1);
}
.footer-address {
  font-family: var(--font-jp);
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  line-height: 2;
  font-style: normal;
}
.footer-col-title {
  font-size: 9px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  margin-bottom: 20px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 12px; }
.footer-col a {
  font-size: 12px;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.5px;
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--white); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 10px;
  color: rgba(255,255,255,0.25);
  letter-spacing: 0.5px;
}

/* ===== Page header (inner pages) ===== */
.page-header {
  margin-top: 72px;
  padding: 80px 72px 60px;
  border-bottom: 1px solid var(--gray-200);
}
.page-header-label {
  font-size: 9px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}
.page-header-title {
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 200;
  letter-spacing: 4px;
  text-transform: uppercase;
  line-height: 1;
}
.page-header-jp {
  font-family: var(--font-jp);
  font-size: 13px;
  color: var(--gray-600);
  margin-top: 12px;
  letter-spacing: 3px;
}

/* ===== Filter Tabs ===== */
.filter-tabs {
  display: flex;
  gap: 4px;
  padding: 40px 72px;
  border-bottom: 1px solid var(--gray-200);
  flex-wrap: wrap;
}
.filter-tab {
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 8px 20px;
  border: 1px solid var(--gray-200);
  cursor: pointer;
  transition: var(--transition);
  background: none;
  font-family: var(--font-en);
}
.filter-tab.active, .filter-tab:hover {
  background: var(--black);
  color: var(--white);
  border-color: var(--black);
}

/* ===== Project page grid ===== */
.projects-page-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3px;
  padding: 3px;
}
.project-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
}
.project-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease); }
.project-thumb:hover img { transform: scale(1.06); }
.project-thumb-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0);
  transition: var(--transition);
  display: flex;
  align-items: flex-end;
  padding: 24px;
}
.project-thumb:hover .project-thumb-overlay { background: rgba(0,0,0,0.55); }
.project-thumb-info { color: var(--white); transform: translateY(12px); opacity: 0; transition: var(--transition); }
.project-thumb:hover .project-thumb-info { transform: translateY(0); opacity: 1; }

/* ===== Project list — gallery grid (miraihouse style) ===== */
.proj-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 56px 44px;
  padding: 56px 72px 96px;
}
.proj-card { display: block; color: inherit; }
.proj-card-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--gray-100);
}
.proj-card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s var(--ease); }
.proj-card:hover .proj-card-media img { transform: scale(1.05); }
.proj-card-count {
  position: absolute; bottom: 12px; right: 12px;
  background: rgba(0,0,0,0.55); color: #fff;
  font-size: 10px; letter-spacing: 1px; padding: 3px 9px; border-radius: 999px;
  backdrop-filter: blur(2px);
}
.proj-card-body { padding: 18px 2px 0; }
.proj-card-cat {
  font-size: 10px; letter-spacing: 3px; text-transform: uppercase;
  color: var(--accent); margin-bottom: 8px;
}
.proj-card-title {
  font-family: var(--font-en); font-size: 18px; font-weight: 400;
  letter-spacing: 1px; line-height: 1.4; transition: color var(--transition);
}
.proj-card:hover .proj-card-title { color: var(--accent); }
.proj-card-sub { font-family: var(--font-jp); font-size: 13px; color: var(--gray-600); margin-top: 4px; }

/* ===== Project detail — stacked full-width images ===== */
.proj-detail-stack { max-width: 1100px; margin: 0 auto; padding: 8px 24px 40px; }
.proj-detail-stack figure { margin: 0 0 24px; overflow: hidden; border-radius: 4px; cursor: zoom-in; }
.proj-detail-stack img { width: 100%; height: auto; display: block; transition: opacity var(--transition); }
.proj-detail-stack figure:hover img { opacity: 0.92; }

@media (max-width: 768px) {
  .proj-grid { grid-template-columns: 1fr; gap: 36px 0; padding: 32px 24px 64px; }
}

/* ===== About: Portfolio PDF ===== */
.portfolio-card {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 24px;
  border: 1px solid var(--gray-200); border-radius: 8px; padding: 32px 36px; max-width: 760px;
}
.portfolio-card .pf-title { font-size: 20px; font-weight: 500; letter-spacing: 1px; margin-bottom: 8px; }
.portfolio-card .pf-desc  { font-family: var(--font-jp); font-size: 14px; color: var(--gray-600); line-height: 1.9; max-width: 460px; }
.pf-download {
  display: inline-flex; align-items: center; gap: 10px; white-space: nowrap;
  background: var(--black); color: #fff; padding: 14px 24px; border-radius: 4px;
  font-size: 12px; letter-spacing: 2px; text-transform: uppercase; transition: background var(--transition);
}
.pf-download:hover { background: var(--accent); }

/* ===== About: Careers ===== */
.careers-list { display: grid; gap: 16px; max-width: 880px; }
.career-card { border: 1px solid var(--gray-200); border-radius: 8px; padding: 24px 28px; transition: border-color var(--transition); }
.career-card:hover { border-color: var(--accent); }
.career-head { display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.career-title { font-size: 18px; font-weight: 500; letter-spacing: 0.5px; }
.career-meta { font-size: 12px; letter-spacing: 1px; color: var(--gray-600); text-transform: uppercase; }
.career-desc { font-family: var(--font-jp); font-size: 14px; color: var(--gray-700); line-height: 1.9; margin-top: 12px; }
.career-apply { display: inline-flex; align-items: center; gap: 6px; margin-top: 16px; font-size: 12px; letter-spacing: 2px; text-transform: uppercase; color: var(--accent); }

/* ===== About page ===== */
.profile-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; }
.profile-photo { width: 100%; aspect-ratio: 3/4; object-fit: cover; }
.profile-name { font-size: 28px; font-weight: 200; letter-spacing: 4px; margin-bottom: 4px; }
.profile-name-jp { font-family: var(--font-jp); font-size: 15px; color: var(--gray-600); margin-bottom: 24px; }
.profile-bio { font-family: var(--font-jp); font-size: 14px; line-height: 2.2; color: var(--gray-800); }
.staff-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.staff-card img { width: 100%; aspect-ratio: 1; object-fit: cover; margin-bottom: 16px; filter: grayscale(20%); transition: filter var(--transition); }
.staff-card:hover img { filter: grayscale(0); }
.staff-name { font-size: 14px; letter-spacing: 1px; margin-bottom: 4px; }
.staff-role { font-family: var(--font-jp); font-size: 11px; color: var(--gray-600); }

/* ===== Contact page ===== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; }
.contact-info p { font-family: var(--font-jp); font-size: 14px; line-height: 2; color: var(--gray-600); margin-bottom: 8px; }
.contact-info strong { color: var(--black); }
.form-group { margin-bottom: 28px; }
.form-label { display: block; font-size: 10px; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 8px; color: var(--gray-600); }
.form-label span { color: var(--accent); margin-left: 4px; }
.form-input, .form-textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--gray-200);
  font-family: var(--font-jp);
  font-size: 14px;
  outline: none;
  transition: border-color var(--transition);
  background: var(--white);
}
.form-input:focus, .form-textarea:focus { border-color: var(--black); }
.form-textarea { resize: vertical; min-height: 160px; }
.btn-submit {
  width: 100%;
  padding: 18px;
  background: var(--black);
  color: var(--white);
  font-size: 10px;
  letter-spacing: 4px;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: background var(--transition);
  font-family: var(--font-en);
}
.btn-submit:hover { background: var(--gray-800); }

/* ===== Map ===== */
.map-embed { width: 100%; height: 400px; border: none; filter: grayscale(20%); }

/* ===== Fade-in animation ===== */
.fade-in { opacity: 0; transform: translateY(28px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
.fade-in.visible { opacity: 1; transform: translateY(0); }
.fade-in-d1 { transition-delay: 0.1s; }
.fade-in-d2 { transition-delay: 0.2s; }
.fade-in-d3 { transition-delay: 0.3s; }

/* ===== Responsive ===== */
@media (max-width: 1200px) {
  .section, .fields-section { padding: 80px 48px; }
  .concept-strip { padding: 0 48px; }
  .hero-content { padding: 0 48px 80px; }
  .hero-indicators, .hero-counter { right: 48px; }
  .about-section-text { padding: 60px 48px; }
  .footer { padding: 72px 48px 36px; }
  .footer-top { grid-template-columns: 2fr 1fr 1fr; gap: 40px; }
  .page-header { padding: 80px 48px 56px; }
  .filter-tabs { padding: 32px 48px; }
}

@media (max-width: 1024px) {
  .section, .fields-section { padding: 72px 40px; }
  .about-section-inner { grid-template-columns: 1fr; }
  .about-section-text { padding: 56px 40px; }
  .projects-mosaic { grid-template-columns: 1fr 1fr; }
  .project-tile--hero { grid-column: span 2; grid-row: span 1; }
  .project-tile--hero img { min-height: 400px; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 40px; }
  .fields-grid { grid-template-columns: 1fr 1fr 1fr; }
}

@media (max-width: 768px) {
  .header { padding: 0 24px; height: 64px; }
  .logo-img { height: 38px; max-width: 140px; }
  .mobile-nav { top: 64px; padding: 24px; }
  .nav { display: none; }
  .hamburger { display: flex; }
  .section, .fields-section { padding: 60px 24px; }
  .concept-strip { padding: 0 24px; }
  .concept-strip-inner { flex-direction: column; gap: 24px; text-align: center; padding: 40px 0; }
  .concept-divider { display: none; }
  .hero-content { padding: 0 24px 64px; }
  .hero-indicators { right: 24px; bottom: 24px; }
  .hero-counter { display: none; }
  .section-header { flex-direction: column; align-items: flex-start; gap: 20px; }
  .projects-mosaic { grid-template-columns: 1fr; }
  .project-tile--hero { grid-column: 1; }
  .project-tile--hero img { min-height: 280px; }
  .project-tile img { height: 240px; }
  .about-section-image img { height: 320px; }
  .about-section-text { padding: 48px 24px; }
  .fields-grid { grid-template-columns: 1fr; }
  .cta-banner-inner { padding: 80px 24px; }
  .footer { padding: 56px 24px 32px; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .page-header { padding: 56px 24px 40px; }
  .filter-tabs { padding: 24px; }
  .projects-page-grid { grid-template-columns: 1fr 1fr; }
  .profile-grid, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .staff-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .projects-page-grid { grid-template-columns: 1fr; }
  .staff-grid { grid-template-columns: 1fr 1fr; }
  .news-item { flex-wrap: wrap; gap: 12px; }
}

/* ===== Lightbox ===== */
.lightbox-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0,0,0,0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s;
}
.lightbox-overlay.open {
  opacity: 1;
  pointer-events: all;
}
.lightbox-inner {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.lightbox-inner img {
  max-width: 88vw;
  max-height: 86vh;
  object-fit: contain;
  border-radius: 2px;
  box-shadow: 0 24px 80px rgba(0,0,0,0.6);
  display: block;
}
.lightbox-close {
  position: fixed;
  top: 20px; right: 24px;
  background: none;
  border: none;
  color: #fff;
  font-size: 32px;
  cursor: pointer;
  line-height: 1;
  opacity: 0.8;
  transition: opacity 0.2s;
  z-index: 10000;
}
.lightbox-close:hover { opacity: 1; }
.lightbox-nav {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.12);
  border: none;
  color: #fff;
  font-size: 28px;
  padding: 12px 16px;
  cursor: pointer;
  border-radius: 4px;
  transition: background 0.2s;
  z-index: 10000;
}
.lightbox-nav:hover { background: rgba(255,255,255,0.25); }
.lightbox-prev { left: 16px; }
.lightbox-next { right: 16px; }
.lightbox-caption {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,0.7);
  font-size: 13px;
  letter-spacing: 1px;
  white-space: nowrap;
}
.lightbox-counter {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,0.6);
  font-size: 12px;
  letter-spacing: 2px;
}

/* Project gallery on detail page */
.project-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
  margin-top: 40px;
}
.project-gallery-item {
  aspect-ratio: 4/3;
  overflow: hidden;
  border-radius: 2px;
  cursor: zoom-in;
  position: relative;
}
.project-gallery-item img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s var(--ease);
}
.project-gallery-item:hover img { transform: scale(1.05); }

/* Project thumb clickable */
.project-thumb { cursor: zoom-in; }