@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@300;400;500&family=DM+Mono:wght@300;400&display=swap');

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

:root {
  --bg: #0a0a08;
  --fg: #f0ede6;
  --fg-muted: rgba(240,237,230,0.45);
  --fg-dim: rgba(240,237,230,0.2);
  --accent: #fa9a3c;
  --accent-hover: #ffb060;
  --border: rgba(240,237,230,0.08);
  --card-bg: #111110;
  --serif: 'Noto Serif JP', serif;
  --mono: 'DM Mono', monospace;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--serif);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* grain + grid */
.grain {
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  opacity: 0.4;
  pointer-events: none;
  z-index: 0;
}

.grid-bg {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

/* nav */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 3rem;
  border-bottom: 1px solid var(--border);
  background: rgba(10,10,8,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.logo {
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.15em;
  color: var(--fg);
  text-decoration: none;
  text-transform: uppercase;
}
.logo span { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--fg-muted);
  text-decoration: none;
  text-transform: uppercase;
  transition: color 0.2s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--fg); }
.nav-links a.active { color: var(--accent); }

/* page wrapper */
.page {
  position: relative;
  z-index: 1;
  padding-top: 80px;
  min-height: 100vh;
}

/* section header */
.section-eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--accent);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 1rem;
}
.section-eyebrow::before {
  content: '';
  display: inline-block;
  width: 32px;
  height: 1px;
  background: var(--accent);
}

/* footer */
footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  padding: 2rem 3rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
footer p {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--fg-dim);
  text-transform: uppercase;
}

/* animations */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.anim { opacity: 0; animation: fadeUp 0.8s ease forwards; }
.anim-d1 { animation-delay: 0.1s; }
.anim-d2 { animation-delay: 0.3s; }
.anim-d3 { animation-delay: 0.5s; }
.anim-d4 { animation-delay: 0.7s; }
.anim-d5 { animation-delay: 0.9s; }

/* buttons */
.btn-primary {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--bg);
  background: var(--accent);
  border: none;
  padding: 14px 32px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: background 0.2s, transform 0.1s;
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:active { transform: scale(0.98); }

.btn-ghost {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-muted);
  background: transparent;
  border: 1px solid var(--border);
  padding: 13px 28px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: color 0.2s, border-color 0.2s;
}
.btn-ghost:hover { color: var(--fg); border-color: var(--fg-muted); }