:root {
  color-scheme: dark;
  --bg: #0d1b2a;
  --bg-alt: #112636;
  --surface: #15293b;
  --border: #22384c;
  --text: #f1f6fb;
  --text-muted: #9fb8cc;
  --accent: #4ea8de;
  --accent-dark: #2f82b8;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  padding-top: 72px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: .8rem;
  font-weight: 700;
  color: var(--accent);
}

.navbar {
  background-color: rgba(13, 27, 42, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.navbar-brand {
  color: var(--text) !important;
  display: flex;
  align-items: center;
  gap: .5rem;
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--accent);
  color: var(--bg);
  font-weight: 900;
}
.navbar-nav .nav-link {
  color: var(--text-muted) !important;
  font-weight: 500;
}
.navbar-nav .nav-link:hover {
  color: var(--text) !important;
}

.hero {
  background:
    radial-gradient(1200px 500px at 85% -10%, rgba(78,168,222,0.18), transparent 60%),
    var(--bg);
  min-height: 86vh;
}

.hero-card {
  background: var(--surface);
  border: 1px solid var(--border);
}
.hero-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(78,168,222,0.12);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.section-alt { background-color: var(--bg-alt); }

.info-card, .service-card, .skill-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
}

.service-card { transition: transform .15s ease, border-color .15s ease; }
.service-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-dark);
}
.service-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(78,168,222,0.12);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}
.flow-step {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
}
.flow-number {
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--accent);
  font-family: "Segoe UI", Arial, sans-serif;
}

.skill-list li {
  padding: .4rem 0;
  border-bottom: 1px solid var(--border);
  color: var(--text-muted);
}
.skill-list li:last-child { border-bottom: none; }

.badge-soft {
  display: inline-flex;
  align-items: center;
  background: rgba(78,168,222,0.12);
  color: var(--accent);
  border: 1px solid rgba(78,168,222,0.3);
  border-radius: 999px;
  padding: .4rem .9rem;
  font-size: .85rem;
  font-weight: 500;
}

.contact-box {
  background: linear-gradient(135deg, var(--surface), var(--bg-alt));
  border: 1px solid var(--border);
}

footer {
  border-top: 1px solid var(--border);
  background-color: var(--bg-alt);
}

@media (min-width: 992px) {
  .py-lg-6 { padding-top: 5rem; padding-bottom: 5rem; }
}