/* ===== BB Services DS 準拠 共通スタイル ===== */
:root {
  --navy: #031e22;
  --navy-light: #0a3038;
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --blue-light: #60a5fa;
  --blue-pale: #dbeafe;
  --white: #ffffff;
  --gray-50: #F5F6F7;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-900: #0f172a;
  --red: #ef4444;
  --green: #10b981;
  --orange: #f59e0b;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body {
  font-family: "Outfit", "Noto Sans JP", sans-serif;
  color: var(--gray-700);
  background: var(--white);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* ===== ANIMATIONS ===== */
@keyframes fadeUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
.reveal { opacity: 0; transform: translateY(30px); transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1); }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ===== HEADER ===== */
.header {
  background: transparent;
  padding: 12px 0;
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background 0.3s, backdrop-filter 0.3s;
}
.header.scrolled {
  background: linear-gradient(to right, rgba(37,99,235,0.95) 0%, rgba(3,30,34,0.95) 60%);
  backdrop-filter: blur(12px);
}
.header .container { display: flex; align-items: center; justify-content: space-between; }
.header-logo { color: var(--white); font-weight: 600; font-size: 18px; letter-spacing: 0.02em; }
.header-nav { display: flex; gap: 20px; align-items: center; }
.header-nav a { color: rgba(255,255,255,0.7); font-size: 13px; transition: color 0.2s; }
.header-nav a:hover { color: var(--white); }
.header-nav a.header-cta {
  background: rgba(255,255,255,0.15); color: var(--white);
  padding: 8px 20px; border-radius: 100px; font-weight: 500;
  border: 1px solid rgba(255,255,255,0.25);
}
.header-nav a.header-cta:hover { background: rgba(255,255,255,0.25); }

/* ===== HERO ===== */
.hero {
  background: linear-gradient(to right, var(--blue) 0%, var(--navy) 60%, var(--navy) 100%);
  color: var(--white); padding: 140px 0 80px;
  position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(circle at 30% 50%, rgba(37,99,235,0.15) 0%, transparent 50%),
              radial-gradient(circle at 70% 30%, rgba(96,165,250,0.1) 0%, transparent 40%);
  pointer-events: none;
}
.hero .container { position: relative; z-index: 1; }
.hero-eyebrow {
  display: inline-block; font-size: 13px; font-weight: 500; color: var(--blue-light);
  letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 16px;
  animation: fadeUp 0.6s ease-out;
}
.hero h1 {
  font-family: "Outfit", "Noto Sans JP", sans-serif;
  font-size: 40px; font-weight: 400; line-height: 1.5;
  margin-bottom: 20px; animation: fadeUp 0.8s ease-out 0.1s both;
}
.hero h1 em { font-style: normal; color: var(--blue-light); }
.hero-sub {
  font-size: 16px; line-height: 1.9; opacity: 0.8;
  max-width: 620px; animation: fadeUp 0.8s ease-out 0.3s both;
}

/* ===== SECTION ===== */
section { padding: 96px 0; }
.section-label {
  font-size: 13px; font-weight: 500; color: var(--blue);
  letter-spacing: 0.12em; text-transform: uppercase;
  margin-bottom: 12px; display: inline-block;
}
.section-title {
  font-family: "Outfit", "Noto Sans JP", sans-serif;
  font-size: 32px; font-weight: 400; color: var(--navy);
  line-height: 1.5; margin-bottom: 20px;
}
.section-sub {
  font-size: 15px; color: var(--gray-600); line-height: 1.9;
  max-width: 720px; margin-bottom: 56px;
}
.section-head-center { text-align: center; }
.section-head-center .section-sub { margin-left: auto; margin-right: auto; }

/* ===== CARDS ===== */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

.benefit-card {
  background: var(--white); border-top: 3px solid var(--blue);
  padding: 32px 28px; border-radius: 0 0 12px 12px;
  box-shadow: 0 4px 24px rgba(3, 30, 34, 0.06);
  transition: transform 0.3s, box-shadow 0.3s;
}
.benefit-card:hover { transform: translateY(-4px); box-shadow: 0 8px 32px rgba(3, 30, 34, 0.1); }
.benefit-number {
  font-family: "Outfit", sans-serif; font-size: 40px; font-weight: 600; color: var(--blue);
  line-height: 1; margin-bottom: 4px;
}
.benefit-unit { font-size: 14px; color: var(--gray-500); margin-bottom: 16px; }
.benefit-title { font-size: 17px; font-weight: 600; color: var(--navy); margin-bottom: 8px; line-height: 1.6; }
.benefit-desc { font-size: 14px; color: var(--gray-600); line-height: 1.8; }

.feat-card {
  background: var(--gray-50); padding: 28px 24px; border-radius: 12px;
  transition: background 0.2s;
}
.feat-card:hover { background: var(--gray-100); }
.feat-icon {
  width: 44px; height: 44px; border-radius: 10px;
  background: var(--blue-pale); color: var(--blue);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}
.feat-icon svg { width: 22px; height: 22px; }
.feat-title { font-size: 16px; font-weight: 600; color: var(--navy); margin-bottom: 8px; line-height: 1.6; }
.feat-desc { font-size: 13px; color: var(--gray-600); line-height: 1.8; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: 100px;
  font-size: 15px; font-weight: 500;
  transition: all 0.2s; cursor: pointer; border: none;
}
.btn-primary { background: var(--blue); color: var(--white); }
.btn-primary:hover { background: var(--blue-dark); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--navy); border: 1px solid var(--gray-300); }
.btn-ghost:hover { background: var(--gray-50); }
.btn svg { width: 16px; height: 16px; }

/* ===== CTA SECTION ===== */
.cta-section {
  background: linear-gradient(to right, var(--blue) 0%, var(--navy) 60%, var(--navy) 100%);
  color: var(--white); text-align: center;
}
.cta-section h2 {
  font-family: "Outfit", "Noto Sans JP", sans-serif;
  font-size: 32px; font-weight: 400; line-height: 1.5; margin-bottom: 20px;
}
.cta-section p { font-size: 15px; opacity: 0.8; margin-bottom: 32px; }
.cta-section .btn-primary { background: var(--white); color: var(--navy); }
.cta-section .btn-primary:hover { background: var(--gray-100); }

/* ===== FOOTER ===== */
.footer {
  background: var(--navy); color: rgba(255,255,255,0.6);
  padding: 56px 0 32px; font-size: 13px;
}
.footer .container { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
.footer-brand { color: var(--white); font-weight: 600; font-size: 17px; margin-bottom: 12px; }
.footer-tagline { line-height: 1.8; }
.footer h4 { color: var(--white); font-size: 13px; font-weight: 600; margin-bottom: 16px; letter-spacing: 0.04em; }
.footer ul { list-style: none; }
.footer li { margin-bottom: 8px; }
.footer a:hover { color: var(--white); }
.footer-bottom {
  margin-top: 40px; padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center; font-size: 12px;
}

/* ===== BREADCRUMB ===== */
.breadcrumb {
  padding: 24px 0 0; font-size: 13px; color: var(--gray-500);
}
.breadcrumb a { color: var(--gray-500); }
.breadcrumb a:hover { color: var(--blue); }
.breadcrumb-sep { margin: 0 8px; color: var(--gray-300); }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .hero { padding: 120px 0 56px; }
  .hero h1 { font-size: 28px; }
  .hero-sub { font-size: 15px; }
  section { padding: 64px 0; }
  .section-title { font-size: 24px; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .footer .container { grid-template-columns: 1fr; gap: 32px; }
  .header-nav { gap: 12px; }
  .header-nav a { font-size: 12px; }
  .header-nav a.header-cta { padding: 6px 14px; }
}