:root {
  --bg: #0c0e12;
  --bg-elevated: #141820;
  --bg-card: #1a1f28;
  --text: #e8eaef;
  --text-muted: #9aa3b2;
  --accent: #5b8def;
  --accent-soft: rgba(91, 141, 239, 0.15);
  --border: rgba(255, 255, 255, 0.08);
  --font-sans: "Noto Sans JP", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: "Plus Jakarta Sans", "Noto Sans JP", sans-serif;
  --container: min(1120px, 92vw);
  --header-h: 72px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

::selection {
  background: rgba(91, 141, 239, 0.35);
  color: #fff;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: var(--container);
  margin-inline: auto;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--header-h);
  background: rgba(12, 14, 18, 0.75);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  transition: background-color 0.3s, border-color 0.3s, box-shadow 0.3s;
}

.site-header.is-scrolled {
  background: rgba(12, 14, 18, 0.92);
  border-bottom-color: rgba(255, 255, 255, 0.12);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  transition: opacity 0.2s ease;
}

.logo:hover {
  text-decoration: none;
  opacity: 0.85;
}

.logo-image {
  height: 32px;
  width: auto;
  display: block;
  object-fit: contain;
}

.logo-mark {
  display: block;
  flex-shrink: 0;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.logo:hover .logo-mark {
  transform: translateY(-1px) scale(1.04);
}

.site-nav ul {
  display: flex;
  gap: 1.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav a {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s;
}

.site-nav a:hover,
.site-nav a.is-current {
  color: var(--text);
  text-decoration: none;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 8px;
  border: 1px solid transparent;
  border-radius: 6px;
  background: transparent;
  cursor: pointer;
  transition: border-color 0.2s, background-color 0.2s;
}

.nav-toggle:hover {
  border-color: var(--border);
  background-color: rgba(255, 255, 255, 0.04);
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.2s ease;
  transform-origin: center;
}

.nav-toggle.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav-toggle.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-h);
  overflow: hidden;
}

.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
  opacity: 0.75;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(91, 141, 239, 0.25), transparent 55%),
    radial-gradient(ellipse 50% 40% at 20% 80%, rgba(120, 80, 200, 0.12), transparent 50%),
    linear-gradient(180deg, #0c0e12 0%, #12151c 100%);
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  opacity: 0.35;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding-block: 4rem 6rem;
}

.hero-label {
  margin: 0 0 1rem;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
}

.hero h1 {
  margin: 0 0 1.25rem;
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
  font-feature-settings: "palt" 1;
  font-variant-numeric: lining-nums tabular-nums;
}

.hero-lead {
  max-width: 36em;
  margin: 0 0 2rem;
  color: var(--text-muted);
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: 6px;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s, transform 0.15s;
}

.btn:active {
  transform: translateY(1px);
}

.btn-icon {
  flex-shrink: 0;
}

.btn-primary {
  color: #fff;
  background: var(--accent);
  border: 1px solid transparent;
}

.btn-primary:hover {
  background: #4a7ad4;
  text-decoration: none;
}

.btn-ghost {
  color: var(--text);
  background: transparent;
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  border-color: var(--text-muted);
  text-decoration: none;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1rem;
}

.section {
  padding: 5.5rem 0;
}

.section-dark {
  background: var(--bg-elevated);
}

/* Scroll Reveal Animation */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

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

.section-header {
  margin-bottom: 2.5rem;
}

.section-en {
  display: block;
  margin-bottom: 0.35rem;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
}

.section-header h2 {
  margin: 0;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.about-message h3 {
  margin: 0 0 1rem;
  font-size: 1.2rem;
  font-weight: 700;
}

.about-message p {
  margin: 0 0 1rem;
  color: var(--text-muted);
}

.company-table {
  margin: 0;
  padding: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.company-table > div {
  display: grid;
  grid-template-columns: 7em 1fr;
  gap: 0.75rem 1rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border);
}

.company-table > div:last-child {
  border-bottom: none;
}

.company-table dt {
  margin: 0;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
}

.company-table dd {
  margin: 0;
  font-size: 0.95rem;
}

.service-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.service-card {
  display: flex;
  flex-direction: column;
  padding: 2rem 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}

.service-card:hover {
  border-color: rgba(91, 141, 239, 0.45);
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}

.service-num {
  display: block;
  margin-bottom: 0.75rem;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  font-variant-numeric: lining-nums tabular-nums;
  color: var(--accent);
}

.service-card h3 {
  margin: 0 0 0.75rem;
  font-size: 1.15rem;
}

.service-card p {
  margin: 0 0 1.25rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* Tag list in service cards */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: auto 0 0;
  padding: 0;
  list-style: none;
}

.tag-list li {
  font-size: 0.75rem;
  padding: 0.25rem 0.65rem;
  background: var(--accent-soft);
  color: #cad8fa;
  border-radius: 4px;
  border: 1px solid rgba(91, 141, 239, 0.2);
  white-space: nowrap;
}

/* Tools Block */
.tools-block {
  margin-top: 3.5rem;
  padding: 2.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.tools-title {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
  font-weight: 700;
}

.tools-lead {
  margin: 0 0 1.5rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.tool-category {
  padding: 1rem 1.25rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
  border-radius: 6px;
}

.tool-category h4 {
  margin: 0 0 0.4rem;
  font-size: 0.85rem;
  font-family: var(--font-display);
  letter-spacing: 0.05em;
  font-variant-numeric: lining-nums tabular-nums;
  text-transform: uppercase;
  color: var(--accent);
}

.tool-category p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text);
  font-weight: 500;
}

.section-note {
  margin: 2rem 0 0;
  font-size: 0.85rem;
  color: var(--text-muted);
  text-align: center;
}

.works-lead {
  max-width: 36em;
  margin: -1rem 0 2rem;
  color: var(--text-muted);
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin: 0 0 2.5rem;
  padding: 0;
  list-style: none;
}

.work-placeholder {
  position: relative;
  aspect-ratio: 16 / 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: linear-gradient(145deg, var(--bg-card), var(--bg-elevated));
  border: 1px dashed rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  overflow: hidden;
  transition: border-color 0.25s, transform 0.25s;
}

.work-placeholder:hover {
  border-color: rgba(91, 141, 239, 0.5);
  transform: translateY(-2px);
}

.work-cat {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.work-name {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text);
}

/* NDA Callout */
.nda-callout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 2rem 2.25rem;
  background: rgba(91, 141, 239, 0.06);
  border: 1px solid rgba(91, 141, 239, 0.25);
  border-radius: 10px;
}

.nda-text h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  color: #fff;
}

.nda-text p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.nda-action {
  flex-shrink: 0;
}

.flow-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.flow-list li {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 1.75rem 1.4rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: border-color 0.25s, transform 0.25s;
}

.flow-list li:hover {
  border-color: rgba(91, 141, 239, 0.4);
  transform: translateY(-2px);
}

.flow-step-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.flow-step-header .service-num {
  margin-bottom: 0;
}

.flow-step-en {
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.flow-list h3 {
  margin: 0 0 0.6rem;
  font-size: 1.05rem;
}

.flow-list p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--text-muted);
}

.section-contact {
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-elevated) 100%);
}

.contact-box {
  max-width: 44em;
  margin-inline: auto;
  padding: 2.75rem;
  background: var(--bg-card);
  border: 1px solid rgba(91, 141, 239, 0.25);
  border-radius: 12px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
}

.contact-lead {
  margin: 0 0 1.75rem;
  color: var(--text);
  font-size: 1rem;
  line-height: 1.75;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.contact-email-display {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
  padding: 0.6rem 0.9rem;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 6px;
  border: 1px solid var(--border);
  font-size: 0.88rem;
}

.email-label {
  color: var(--text-muted);
}

.email-code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  color: var(--accent);
  background: transparent;
  font-size: 0.95rem;
  font-weight: 600;
}

.contact-template {
  margin: 2rem 0;
  padding: 1.5rem;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.contact-template h4 {
  margin: 0 0 0.85rem;
  font-size: 0.92rem;
  color: var(--accent);
  font-weight: 600;
}

.contact-template ul {
  margin: 0;
  padding-left: 1.25rem;
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.8;
}

.contact-template strong {
  color: var(--text);
}

.contact-address {
  margin: 1.5rem 0 0 !important;
  font-size: 0.9rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  padding-top: 1.25rem;
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translate(-50%, 40px);
  background: #1e2533;
  color: #fff;
  padding: 0.75rem 1.5rem;
  border-radius: 30px;
  border: 1px solid rgba(91, 141, 239, 0.5);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
  font-size: 0.9rem;
  font-weight: 500;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1), transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 1000;
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

.site-footer {
  padding: 2.5rem 0;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 2rem;
}

.footer-logo {
  margin: 0;
  font-weight: 700;
  font-size: 0.95rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.footer-nav a {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-decoration: none;
}

.footer-nav a:hover {
  color: var(--text);
}

.copyright {
  margin: 0 0 0 auto;
  font-size: 0.8rem;
  color: var(--text-muted);
}

@media (max-width: 900px) {
  .about-grid,
  .service-cards,
  .works-grid {
    grid-template-columns: 1fr;
  }

  .tools-grid {
    grid-template-columns: 1fr;
  }

  .nda-callout {
    flex-direction: column;
    align-items: flex-start;
  }

  .flow-list {
    grid-template-columns: 1fr 1fr;
  }

  .company-table > div {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    inset: var(--header-h) 0 auto;
    padding: 1rem;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.25s, opacity 0.25s;
  }

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

  .site-nav ul {
    flex-direction: column;
    gap: 0;
  }

  .site-nav a {
    display: block;
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--border);
  }

  .contact-actions {
    flex-direction: column;
  }

  .contact-actions .btn {
    width: 100%;
  }

  .contact-box {
    padding: 1.75rem 1.25rem;
  }

  .copyright {
    margin-left: 0;
    width: 100%;
  }

  .flow-list {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .service-card,
  .site-nav,
  .reveal {
    transition: none !important;
  }

  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }
}