:root {
  --color-dark: #0f172a;
  --color-darker: #020617;
  --color-light: #f8fafc;
  --color-border: #e2e8f0;
  --color-muted: #64748b;
  --color-accent: #050f77;
  --color-accent-soft: #0ea5e9;
  --max-width: 1200px;
  --section-padding-y: clamp(64px, 12vw, 128px);
  --section-padding-x: clamp(20px, 6vw, 80px);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Noto Sans JP', 'Roboto', sans-serif;
  color: var(--color-dark);
  background: #fff;
  line-height: 1.7;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link:focus {
  left: 16px;
  top: 16px;
  width: auto;
  height: auto;
  padding: 8px 12px;
  background: var(--color-accent);
  color: #fff;
  z-index: 999;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px var(--section-padding-x);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(12px);
}

.site-header.header-elevated {
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.08);
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand a {
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.brand small {
  color: var(--color-muted);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
}

.nav-links {
  display: flex;
  gap: 1.75rem;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.nav-links a {
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.mobile-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: transparent;
  align-items: center;
  justify-content: center;
  padding: 0;
  cursor: pointer;
}

.mobile-toggle span,
.mobile-toggle span::before,
.mobile-toggle span::after {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-dark);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.mobile-toggle span {
  position: relative;
}

.mobile-toggle span::before,
.mobile-toggle span::after {
  content: '';
  position: absolute;
  left: 0;
}

.mobile-toggle span::before {
  transform: translateY(-6px);
}

.mobile-toggle span::after {
  transform: translateY(6px);
}

.mobile-toggle[aria-expanded="true"] span {
  background: transparent;
}

.mobile-toggle[aria-expanded="true"] span::before {
  transform: rotate(45deg);
}

.mobile-toggle[aria-expanded="true"] span::after {
  transform: rotate(-45deg);
}

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: flex-end;
  padding: 0;
  margin: 0;
  color: #fff;
  background-image: url('https://images.unsplash.com/photo-1503387762-592deb58ef4e?auto=format&fit=crop&w=1920&q=80');
  background-size: cover;
  background-position: center;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(2, 6, 23, 0.85) 0%, rgba(5, 15, 119, 0.7) 60%, rgba(14, 165, 233, 0.35) 100%);
}

.hero-content {
  position: relative;
  padding: clamp(48px, 8vw, 96px) var(--section-padding-x);
  width: min(860px, 100%);
}

.hero-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}

.chip {
  padding: 8px 18px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 999px;
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.hero h1 {
  font-size: clamp(2.8rem, 8vw, 4.5rem);
  letter-spacing: 0.08em;
  margin: 0 0 12px;
  font-weight: 700;
}

.hero p.hero-lead {
  font-size: 1.25rem;
  max-width: 560px;
  margin-bottom: 32px;
}

.hero-cta {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 999px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border: 1px solid transparent;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.button.primary {
  background: #fff;
  color: var(--color-accent);
}

.button.ghost {
  border-color: rgba(255, 255, 255, 0.5);
  color: #fff;
}

.button:hover {
  transform: translateY(-2px);
}

section {
  padding: var(--section-padding-y) var(--section-padding-x);
}

.section-heading {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
  font-size: 2rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border-right: 2px solid var(--color-dark);
  padding-right: 20px;
  margin-bottom: 48px;
}

.section-heading span {
  font-size: 0.8rem;
  color: var(--color-muted);
  letter-spacing: 0.3em;
}

.section-intro {
  max-width: 720px;
  font-size: 1.05rem;
}

#message {
  background: var(--color-light);
}

.message-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
  align-items: start;
}

.message-grid p {
  margin: 0;
}

#works {
  background: #fff;
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 48px;
}

.work-card {
  border: 1px solid var(--color-border);
  border-radius: 28px;
  padding: 32px;
  box-shadow: 0 40px 80px rgba(15, 23, 42, 0.08);
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.work-card header {
  display: flex;
  align-items: center;
  gap: 18px;
}

.work-card .sequence {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  display: grid;
  place-items: center;
  font-weight: 600;
  letter-spacing: 0.2em;
}

.work-card h3 {
  margin: 0;
  font-size: 1.25rem;
}

.work-card p {
  margin: 0;
  color: var(--color-muted);
}

.image-stack {
  display: grid;
  grid-template-columns: repeat(3, minmax(60px, 1fr));
  gap: 8px;
}

.image-stack img {
  width: 100%;
  height: 120px;
  object-fit: cover;
  border-radius: 18px;
  filter: saturate(110%);
}

.view-more {
  margin-top: 48px;
  text-align: right;
}

#info {
  background: var(--color-light);
  text-align: center;
}

.info-placeholder {
  padding: 32px;
  border: 1px dashed var(--color-border);
  border-radius: 24px;
  font-size: 0.95rem;
  color: var(--color-muted);
}

#company {
  background: #fff;
}

.company-hero {
  display: grid;
  grid-template-columns: minmax(260px, 420px) 1fr;
  gap: 40px;
  align-items: center;
  margin-bottom: 56px;
}

.company-hero figure {
  margin: 0;
  border-radius: 32px;
  overflow: hidden;
  box-shadow: -12px 12px 0 rgba(14, 165, 233, 0.2);
}

.company-hero figcaption {
  display: none;
}

.company-hero p {
  font-size: 1.1rem;
}

.company-details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 32px;
}

.detail-block {
  border-top: 1px solid var(--color-border);
  padding-top: 18px;
}

.detail-block h3 {
  margin: 0 0 8px;
  letter-spacing: 0.2em;
  font-size: 0.9rem;
  color: var(--color-muted);
}

.detail-block p,
.detail-block address {
  margin: 0;
  font-style: normal;
}

.map-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-accent);
  margin-bottom: 8px;
}

#contact {
  background: var(--color-light);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.form-wrapper {
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
}

form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.label-group {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
}

.required {
  color: var(--color-accent);
  font-size: 0.75rem;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 14px 18px;
  font-size: 1rem;
  font-family: inherit;
  background: #fff;
}

textarea {
  min-height: 160px;
  resize: vertical;
}

.privacy-row {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  font-size: 0.9rem;
}

.privacy-row label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

form .button {
  grid-column: 1 / -1;
  justify-self: flex-start;
  background: var(--color-accent);
  color: #fff;
  border: none;
}

.site-footer {
  padding: 32px var(--section-padding-x) 48px;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  font-size: 0.85rem;
}

.footer-links {
  display: flex;
  gap: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

@media (max-width: 960px) {
  .nav-links {
    position: absolute;
    top: 100%;
    right: 0;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.98);
    padding: 24px;
    border: 1px solid var(--color-border);
    border-radius: 16px;
    margin: 16px;
    box-shadow: 0 20px 60px rgba(15, 23, 42, 0.12);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity 0.2s ease, transform 0.2s ease;
  }

  .nav-links.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .mobile-toggle {
    display: inline-flex;
  }
}

@media (max-width: 720px) {
  .site-header {
    flex-wrap: wrap;
    gap: 12px;
  }

  .company-hero {
    grid-template-columns: 1fr;
  }

  .hero-cta {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* Vertical side labels to mirror Quine.html */
.side-label {
  position: fixed;
  top: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: #000;
  z-index: 10;
  pointer-events: none;
}
.side-label.left { left: 0; }
.side-label.right { right: 0; }
@media (max-width: 840px) {
  .side-label { width: 40px; font-size: 0.875rem; }
}
@media (max-width: 540px) {
  .side-label { width: 38px; }
  .side-label.left { left: auto; right: 0; top: 260px; bottom: auto; position: fixed; }
  .side-label.right { right: 0; top: 80px; bottom: auto; position: fixed; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}