:root {
  --color-bg: #fafafa;
  --color-text: #1a1a1a;
  --color-accent: #c8a96e;
  --color-accent-dark: #a8893e;
  --color-muted: #666;
  --color-border: #e0e0e0;
  --font-sans: 'Noto Sans JP', sans-serif;
  --max-width: 1100px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
}

a { color: inherit; text-decoration: none; }
img { display: block; width: 100%; object-fit: cover; }

/* ── NAV ── */
header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(250,250,250,0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: .05em;
  color: var(--color-accent-dark);
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-size: .9rem;
  color: var(--color-muted);
  transition: color .2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--color-accent-dark); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.nav-toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--color-text);
  transition: transform .3s, opacity .3s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 680px) {
  .nav-toggle { display: flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 60px; left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
  }
  .nav-links.open { display: flex; }
  .nav-links li a {
    display: block;
    padding: .9rem 1.5rem;
    border-top: 1px solid var(--color-border);
  }
}

/* ── PAGE HERO ── */
.page-hero {
  height: 260px;
  background: linear-gradient(135deg, #2c2c2c 0%, #4a3728 100%);
  display: flex; align-items: center; justify-content: center;
  text-align: center;
  color: #fff;
}
.page-hero h1 { font-size: clamp(1.6rem, 4vw, 2.4rem); letter-spacing: .1em; }
.page-hero p { margin-top: .5rem; color: rgba(255,255,255,.7); font-size: .95rem; }

/* ── SECTIONS ── */
.section { padding: 5rem 1.5rem; }
.section-inner { max-width: var(--max-width); margin: 0 auto; }
.section-title {
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  letter-spacing: .08em;
  margin-bottom: 2.5rem;
  position: relative;
  padding-bottom: .75rem;
}
.section-title::after {
  content: '';
  position: absolute; bottom: 0; left: 0;
  width: 40px; height: 2px;
  background: var(--color-accent);
}
.section-title.center { text-align: center; }
.section-title.center::after { left: 50%; transform: translateX(-50%); }

.section-alt { background: #f3f0eb; }

/* ── CARDS ── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.5rem;
}

.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  overflow: hidden;
  transition: transform .2s, box-shadow .2s;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,.08); }
.card img { height: 180px; }
.card-body { padding: 1.2rem; }
.card-body h3 { font-size: 1rem; margin-bottom: .4rem; }
.card-body p { font-size: .875rem; color: var(--color-muted); }

/* ── BUTTON ── */
.btn {
  display: inline-block;
  padding: .7rem 1.8rem;
  background: var(--color-accent);
  color: #fff;
  border-radius: 4px;
  font-size: .9rem;
  letter-spacing: .05em;
  transition: background .2s;
}
.btn:hover { background: var(--color-accent-dark); }

/* ── FOOTER ── */
footer {
  background: var(--color-text);
  color: rgba(255,255,255,.6);
  text-align: center;
  padding: 2rem 1.5rem;
  font-size: .85rem;
}
footer a { color: var(--color-accent); }