:root {
  --bg: #0a0e17;
  --bg-elevated: #111827;
  --bg-card: #1a2234;
  --border: rgba(255, 255, 255, 0.08);
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --accent: #06b6d4;
  --accent-2: #6366f1;
  --accent-glow: rgba(6, 182, 212, 0.25);
  --gradient: linear-gradient(135deg, #06b6d4 0%, #6366f1 100%);
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  --font: "Inter", "Noto Sans JP", system-ui, sans-serif;
  --max-width: 1120px;
  --header-h: 72px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(99, 102, 241, 0.18), transparent),
    radial-gradient(ellipse 60% 40% at 100% 50%, rgba(6, 182, 212, 0.08), transparent);
  pointer-events: none;
  z-index: -1;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: #67e8f9;
}

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

.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  z-index: 100;
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
  letter-spacing: -0.02em;
}

.logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--gradient);
  display: grid;
  place-items: center;
  font-size: 0.85rem;
  font-weight: 800;
  color: #fff;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav a {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  transition: color 0.2s, background 0.2s;
}

.nav a:hover,
.nav a.active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.nav-cta {
  margin-left: 0.5rem;
  padding: 0.55rem 1.25rem !important;
  background: var(--gradient) !important;
  color: #fff !important;
  border-radius: 999px !important;
}

.nav-cta:hover {
  opacity: 0.9;
  color: #fff !important;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
  padding: 0.5rem;
}

/* Hero */
.hero {
  padding: calc(var(--header-h) + 4rem) 0 5rem;
  min-height: 90vh;
  display: flex;
  align-items: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.25);
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

.hero-badge span {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.hero h1 .gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-lead {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  max-width: 32rem;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s;
}

.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 4px 24px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--accent-glow);
  color: #fff;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text);
}

.hero-visual {
  position: relative;
}

.hero-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow);
}

.code-window {
  font-family: "Consolas", "Monaco", monospace;
  font-size: 0.82rem;
  line-height: 1.6;
}

.code-window .line {
  display: block;
}

.code-window .keyword { color: #c084fc; }
.code-window .string { color: #34d399; }
.code-window .comment { color: #64748b; }
.code-window .func { color: #38bdf8; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
}

.stat-item {
  text-align: center;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.stat-item strong {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-item span {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Sections */
section {
  padding: 5rem 0;
}

.section-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.section-desc {
  color: var(--text-muted);
  max-width: 36rem;
  margin-bottom: 3rem;
}

/* Services */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

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

.service-card:hover {
  transform: translateY(-4px);
  border-color: rgba(6, 182, 212, 0.3);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.service-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(99, 102, 241, 0.15);
  display: grid;
  place-items: center;
  font-size: 1.4rem;
  margin-bottom: 1.25rem;
}

.service-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.service-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Values */
.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.value-item {
  padding-left: 1.25rem;
  border-left: 3px solid transparent;
  border-image: var(--gradient) 1;
}

.value-item h3 {
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

.value-item p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Company table */
.info-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
}

.info-table th,
.info-table td {
  padding: 1.1rem 1.5rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}

.info-table tr:last-child th,
.info-table tr:last-child td {
  border-bottom: none;
}

.info-table th {
  width: 28%;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-muted);
  font-weight: 600;
  white-space: nowrap;
}

.info-table td {
  color: var(--text);
}

/* Contact */
.contact-section {
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

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

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.contact-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.contact-item:last-child {
  margin-bottom: 0;
}

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(6, 182, 212, 0.12);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.contact-item strong {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.contact-item a,
.contact-item span {
  font-size: 1rem;
  color: var(--text);
}

/* Page header */
.page-hero {
  padding: calc(var(--header-h) + 3rem) 0 3rem;
  text-align: center;
}

.page-hero h1 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.page-hero p {
  color: var(--text-muted);
  max-width: 32rem;
  margin-inline: auto;
}

/* Process steps */
.process-list {
  display: grid;
  gap: 1.5rem;
  counter-reset: step;
}

.process-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.5rem;
  padding: 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.process-item::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.process-item h3 {
  font-size: 1.05rem;
  margin-bottom: 0.35rem;
}

.process-item p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Footer */
.site-footer {
  padding: 3rem 0 2rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.footer-copy {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--accent);
}

/* Responsive */
@media (max-width: 900px) {
  .hero-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    order: -1;
  }

  .nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    padding: 1rem;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
  }

  .nav.open {
    display: flex;
  }

  .menu-toggle {
    display: block;
  }
}

@media (max-width: 600px) {
  .hero-stats {
    grid-template-columns: 1fr;
  }

  .info-table th,
  .info-table td {
    display: block;
    width: 100%;
  }

  .info-table th {
    padding-bottom: 0.25rem;
    border-bottom: none;
  }
}