:root {
  --primary: #003366;
  --primary-light: #004a8d;
  --accent: #D4AF37; /* Gold */
  --text-main: #1a1a1a;
  --text-sub: #4a4a4a;
  --bg-soft: #f8fafc;
  --white: #ffffff;
  --shadow: 0 20px 40px rgba(0,0,0,0.08);
  --glass: rgba(255, 255, 255, 0.85);
  --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
  font-family: 'Optima', 'Cormorant Garamond', 'Noto Serif JP', serif;
  color: var(--text-main);
  background-color: var(--white);
  line-height: 1.8;
  overflow-x: hidden;
}

/* 法令順守: PRバッジ 2023ステマ規制対応 */
.ad-disclosure {
  background: #f1f5f9;
  color: #64748b;
  font-size: 12px;
  text-align: center;
  padding: 8px;
  font-family: sans-serif;
  border-bottom: 1px solid #e2e8f0;
}

/* Navigation */
header {
  height: 90px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 8%;
  background: var(--glass);
  backdrop-filter: blur(15px);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid rgba(0,0,0,0.05);
}

.logo {
  font-size: 26px;
  font-weight: 800;
  color: var(--primary);
  text-decoration: none;
  letter-spacing: 1px;
}

.nav-links {
  display: flex;
  gap: 40px;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-main);
  font-weight: 600;
  font-size: 15px;
  transition: var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: var(--transition);
}

.nav-links a:hover::after {
  width: 100%;
}

/* Hero Section */
.hero {
  height: 90vh;
  position: relative;
  display: flex;
  align-items: center;
  padding: 0 8%;
  background: url('https://images.unsplash.com/photo-1502602898657-3e91760cbb34?q=80&w=2073&auto=format&fit=crop') center/cover no-repeat;
  color: var(--white);
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.2) 100%);
}

.hero-content {
  position: relative;
  z-index: 10;
  max-width: 800px;
}

.hero-tag {
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 4px;
  color: var(--accent);
  margin-bottom: 20px;
  display: block;
}

.hero-title {
  font-size: clamp(3rem, 8vw, 5.5rem);
  line-height: 1.1;
  font-weight: 900;
  margin-bottom: 30px;
}

.hero-title span {
  color: var(--accent);
}

.hero-desc {
  font-size: 1.25rem;
  margin-bottom: 40px;
  max-width: 600px;
  opacity: 0.9;
}

/* CTA Buttons */
.btn-wrap {
  display: flex;
  gap: 20px;
}

.btn-primary {
  padding: 22px 50px;
  background: var(--accent);
  color: var(--white);
  text-decoration: none;
  font-weight: 800;
  border-radius: 100px;
  transition: var(--transition);
  box-shadow: 0 10px 30px rgba(212, 175, 55, 0.4);
  display: inline-block;
}

.btn-primary:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(212, 175, 55, 0.6);
}

/* Content Sections */
.section {
  padding: 120px 8%;
}

.section-title {
  text-align: center;
  margin-bottom: 80px;
}

.section-title h2 {
  font-size: 3rem;
  font-weight: 900;
  margin-bottom: 20px;
}

.section-title p {
  color: var(--text-sub);
  font-size: 1.1rem;
}

/* Feature Grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
}

.feature-card {
  padding: 60px 40px;
  background: var(--white);
  border-radius: 30px;
  border: 1px solid rgba(0,0,0,0.05);
  transition: var(--transition);
  text-align: center;
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow);
  border-color: var(--accent);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 30px;
  display: block;
}

/* Review / Star UI */
.star-rating {
  color: var(--accent);
  font-size: 1.2rem;
  margin-bottom: 10px;
}

/* Footer */
footer {
  background: var(--primary);
  color: var(--white);
  padding: 100px 8% 50px;
}

.footer-content {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 60px;
  margin-bottom: 80px;
}

.footer-logo {
  font-size: 28px;
  font-weight: 900;
  margin-bottom: 25px;
}

.footer-links h4 {
  margin-bottom: 25px;
  font-size: 18px;
  color: var(--accent);
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: 15px;
}

.footer-links a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--white);
  padding-left: 5px;
}

.copyright {
  text-align: center;
  padding-top: 50px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 13px;
  color: rgba(255,255,255,0.5);
}

/* Responsive */
@media (max-width: 992px) {
  .hero-title { font-size: 3.5rem; }
  .footer-content { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  header { padding: 0 5%; }
  .nav-links { display: none; }
  .section { padding: 80px 5%; }
  .hero-title { font-size: 2.8rem; }
}