/* ========== HEADER ========== */
header {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: 80px;
  display: flex;
  align-items: center;
}
.header-inner {
  width: 100%;
  padding: 0 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-family: 'Lora', serif;
  font-size: 30px;
  font-weight: 700;
  color: #505050;
  letter-spacing: 0.5px;
}
nav { display: flex; gap: 36px; align-items: center; }
nav a { font-size: 14px; color: var(--text); }
nav a:hover { color: var(--terra); }
a.nav-cta {
  background: var(--terra);
  color: var(--white);
  padding: 10px 24px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
}
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: #505050;
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ========== FOOTER ========== */
footer {
  background: var(--green-dark);
  display: block;
  width: 100%;
  position: relative;
  z-index: 1;
}
.footer-inner {
  padding: 0 60px;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 44px 0;
  border-bottom: 1px solid rgba(255,255,255,0.15);
}
.footer-logo {
  font-family: 'Lora', serif;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
}
.footer-nav {
  display: flex;
  align-items: center;
  gap: 36px;
}
.footer-nav a {
  font-size: 14px;
  color: rgba(255,255,255,0.8);
}
.footer-nav a:hover {
  color: #fff;
}
.footer-cta {
  background: var(--terra);
  color: #fff !important;
  padding: 12px 28px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 14px;
}
.copy {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  text-align: center;
  padding: 20px 0;
}
@media (max-width: 900px) {
  .footer-inner { padding: 0 32px; }
  .footer-top { flex-direction: column; gap: 20px; align-items: flex-start; padding: 32px 0; }
  .footer-nav { flex-direction: row; flex-wrap: wrap; gap: 12px 20px; }
  .footer-cta { display: none; }
}
@media (max-width: 767px) {
  .footer-inner { padding: 0 24px; }
}

/* ========== PAGE HERO ========== */
.page-hero {
  background: var(--white);
  padding: 140px 0 72px;
  text-align: center;
  border-top: 1px solid var(--border);
}
.page-hero-en {
  font-family: 'Lora', serif;
  font-size: 32px;
  font-weight: 700;
  color: var(--green);
  letter-spacing: 3px;
  margin-bottom: 4px;
}
.page-hero-jp {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 32px;
  font-weight: 700;
  color: #505050;
}

/* ========== FILTER ========== */
.filter-wrap {
  padding: 48px 180px 0;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.filter-btn {
  padding: 8px 20px;
  border-radius: 999px;
  border: 1.5px solid var(--border);
  background: var(--white);
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 13px;
  color: var(--text);
  cursor: pointer;
  transition: all 0.2s;
}
.filter-btn:hover { border-color: var(--green); color: var(--green); }
.filter-btn.active {
  background: var(--green);
  border-color: var(--green);
  color: var(--white);
}

/* ========== BREADCRUMB ========== */
.breadcrumb {
  padding: 120px 180px 0;
  display: flex;
  gap: 8px;
  align-items: center;
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 12px;
  color: var(--muted);
}
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--terra); }
.breadcrumb span { color: var(--border); }

/* ========== BACK BUTTON ========== */
.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 14px;
  font-weight: 500;
  color: var(--green);
  border: 1.5px solid var(--green);
  padding: 14px 40px;
  border-radius: 999px;
  transition: all 0.2s;
}
.back-btn:hover { background: var(--green); color: var(--white); }
.back-btn::before { content: '←'; font-size: 14px; }

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .header-inner { padding: 0 32px; }
  nav { gap: 20px; }
  .logo { font-size: 24px; }
}
@media (max-width: 1200px) {
  .filter-wrap { padding: 48px 80px 0; }
  .breadcrumb { padding: 120px 80px 0; }
}
@media (max-width: 900px) {
  .filter-wrap { padding: 32px 40px 0; }
  .breadcrumb { padding: 120px 40px 0; }
}
@media (max-width: 767px) {
  .header-inner { padding: 0 24px; }
  .logo { font-size: 22px; }
  .hamburger { display: flex; }
  #main-nav {
    display: none;
    position: fixed;
    top: 80px;
    left: 0; right: 0;
    background: var(--white);
    flex-direction: column;
    align-items: center;
    gap: 0;
    padding: 16px 0 24px;
    border-bottom: 1px solid var(--border);
    z-index: 99;
  }
  #main-nav.open { display: flex; }
  #main-nav a { padding: 14px 0; font-size: 15px; width: 100%; text-align: center; }
  #main-nav a.nav-cta { margin: 12px auto 0; width: auto; padding: 12px 32px; }
  .page-hero { padding: 110px 24px 60px; }
  .page-hero-jp { font-size: 26px; }
  .filter-wrap { padding: 32px 24px 0; gap: 8px; }
  .breadcrumb { padding: 100px 24px 0; }
}