/* ===== HEADER ===== */

.site-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 999;
      background: rgba(248, 250, 252, 0.96);
      backdrop-filter: blur(8px);
      border-bottom: 1px solid var(--accent);
      transition: box-shadow 0.3s ease;
    }

.site-header.scrolled {
      box-shadow: 0 4px 20px rgba(71, 85, 105, 0.15);
    }

.header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 16px 24px;
      max-width: 1300px;
      margin: 0 auto;
    }

.site-logo {
      display: flex;
      flex-direction: column;
      text-decoration: none;
    }

.logo-main {
      font-family: 'Zen Maru Gothic', sans-serif;
      font-weight: 700;
      font-size: 1.25rem;
      color: var(--dark);
      line-height: 1.2;
    }

.logo-sub {
      font-size: 0.7rem;
      color: var(--secondary);
      letter-spacing: 0.05em;
    }

.main-nav {
      display: flex;
      align-items: center;
      gap: 8px;
    }

.nav-link {
      text-decoration: none;
      color: var(--primary);
      font-size: 0.9rem;
      padding: 8px 14px;
      border-radius: 50px;
      transition: background 0.2s ease, color 0.2s ease;
      font-family: 'Noto Sans JP', sans-serif;
    }

.nav-link:hover {
      background: var(--accent);
      color: var(--dark);
    }

.nav-link.active {
      background: var(--primary);
      color: #fff;
    }

.nav-cta {
      background: var(--dark);
      color: #fff;
      text-decoration: none;
      font-size: 0.85rem;
      padding: 10px 22px;
      border-radius: 50px;
      transition: background 0.2s ease;
      font-family: 'Noto Sans JP', sans-serif;
      margin-left: 8px;
    }

.nav-cta:hover {
      background: var(--primary);
    }

.hamburger-btn {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
    }

.hamburger-btn span {
      display: block;
      width: 26px;
      height: 2px;
      background: var(--dark);
      border-radius: 2px;
      transition: transform 0.3s ease, opacity 0.3s ease;
    }

.hamburger-btn.open span:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }

.hamburger-btn.open span:nth-child(2) {
      opacity: 0;
    }

.hamburger-btn.open span:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }

.mobile-nav {
      display: none;
      flex-direction: column;
      background: #fff;
      border-top: 1px solid var(--accent);
      padding: 16px 24px;
      gap: 8px;
    }

.mobile-nav.open {
      display: flex;
    }

.mobile-nav .nav-link {
      padding: 12px 0;
      border-bottom: 1px solid var(--accent);
      border-radius: 0;
      font-size: 1rem;
    }

.mobile-nav .nav-cta {
      text-align: center;
      margin: 8px 0 0;
    }

/* ===== FOOTER ===== */

.site-footer {
      background: var(--dark);
      color: rgba(255,255,255,0.75);
      padding: 60px 0 32px;
    }

.footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 48px;
    }

.footer-brand .logo-main {
      color: #fff;
      font-size: 1.1rem;
      display: block;
      margin-bottom: 14px;
    }

.footer-brand p {
      font-size: 0.85rem;
      line-height: 1.8;
      margin-bottom: 16px;
      color: rgba(255,255,255,0.65);
    }

.footer-contact-item {
      display: flex;
      align-items: flex-start;
      gap: 8px;
      font-size: 0.82rem;
      color: rgba(255,255,255,0.65);
      margin-bottom: 8px;
      text-decoration: none;
    }

.footer-contact-item:hover {
      color: #fff;
    }

.footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

.footer-links a {
      color: rgba(255,255,255,0.65);
      text-decoration: none;
      font-size: 0.85rem;
      transition: color 0.2s ease;
    }

.footer-links a:hover {
      color: #fff;
    }

.footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.12);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
    }

.footer-bottom p {
      font-size: 0.8rem;
      color: rgba(255,255,255,0.5);
    }

.footer-legal-links {
      display: flex;
      gap: 20px;
      flex-wrap: wrap;
    }

.footer-legal-links a {
      color: rgba(255,255,255,0.5);
      font-size: 0.8rem;
      text-decoration: none;
      transition: color 0.2s ease;
    }

.footer-legal-links a:hover {
      color: #fff;
    }

@media (max-width: 1024px) {
  .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
}

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

  .main-nav {
        display: none;
      }

  .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }

  .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
}