@import url('https://fonts.googleapis.com/css2?family=Sawarabi+Mincho&family=Work+Sans:wght@400;500;600;700&display=swap');

:root {
  --ink: #0f1a14;
  --bg: #0c1511;
  --bg-veil: radial-gradient(circle at 18% 12%, rgba(123, 191, 142, 0.18), transparent 26%),
              radial-gradient(circle at 80% 8%, rgba(223, 140, 86, 0.18), transparent 24%),
              radial-gradient(circle at 65% 70%, rgba(74, 110, 93, 0.12), transparent 40%);
  --surface: #13241b;
  --paper: #f2eee6;
  --moss: #7bbf8e;
  --terracotta: #e07a3f;
  --sage: #c8e3d2;
  --line: rgba(255,255,255,0.08);
  --muted: #b8c6ba;
  --shadow: 0 20px 70px rgba(0,0,0,0.35);
  --radius: 18px;
  --font-display: 'Sawarabi Mincho', 'Noto Serif JP', serif;
  --font-body: 'Work Sans', 'Noto Sans JP', system-ui, -apple-system, sans-serif;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--bg);
  background-image: linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px),
                    linear-gradient(0deg, rgba(255,255,255,0.02) 1px, transparent 1px),
                    var(--bg-veil);
  background-size: 22px 22px, 22px 22px, cover;
  color: #ecf4ed;
  min-height: 100vh;
  line-height: 1.7;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; height: auto; border-radius: calc(var(--radius) - 4px); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(12,21,17,0.82);
  border-bottom: 1px solid var(--line);
}

.navbar {
  max-width: 1240px;
  margin: 0 auto;
  padding: 14px clamp(16px, 3vw, 28px);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #f6f1e8;
}
.brand-mark {
  padding: 6px 10px;
  background: linear-gradient(135deg, var(--terracotta), var(--moss));
  color: #0b110c;
  border-radius: 12px;
  box-shadow: var(--shadow);
  font-family: var(--font-display);
}

.nav-links { display: flex; gap: 16px; list-style: none; padding: 0; margin: 0; justify-content: flex-end; align-items: center; }
.nav-links a { padding: 10px 12px; border-radius: 12px; transition: background 0.2s ease, color 0.2s ease; font-weight: 600; }
.nav-links a:hover { background: rgba(200,227,210,0.12); color: var(--sage); }

.nav-toggle {
  display: none;
  justify-self: end;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.05);
  color: #f6f1e8;
  font-weight: 700;
}

.callout { display: inline-flex; align-items: center; gap: 8px; padding: 8px 12px; border-radius: 999px; background: rgba(200,227,210,0.1); color: var(--sage); border: 1px solid var(--line); font-size: 14px; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 12px 16px; border-radius: 14px; font-weight: 700; border: 1px solid transparent; cursor: pointer; transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease; text-decoration: none; }
.btn-primary { background: linear-gradient(135deg, var(--terracotta), var(--moss)); color: #0a110c; box-shadow: var(--shadow); }
.btn-ghost { border-color: var(--line); color: #f6f1e8; background: rgba(255,255,255,0.05); }
.btn:hover { transform: translateY(-2px); }

.wrap { max-width: 1220px; margin: 0 auto; padding: clamp(16px, 3vw, 28px); }

.hero {
  padding: clamp(16px, 3vw, 36px) 0 12px;
  position: relative;
}
.hero-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(280px,1fr)); gap: 28px; align-items: center; }
.hero-visual { position: relative; border-radius: 22px; overflow: hidden; background: linear-gradient(145deg, rgba(123,191,142,0.24), rgba(12,21,17,0.7)); border: 1px solid var(--line); box-shadow: var(--shadow); }
.hero-visual::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0,0,0,0) 30%, rgba(0,0,0,0.38)); }
.hero-visual img { width: 100%; height: 100%; object-fit: cover; }

h1, h2, h3, h4 { font-family: var(--font-display); letter-spacing: 0.02em; margin: 0 0 10px; color: #f6f1e8; }
.hero h1 { font-size: clamp(32px, 4vw, 48px); }
.lead { color: var(--muted); font-size: 18px; margin: 0 0 18px; }

.grid { display: grid; gap: 16px; grid-template-columns: repeat(var(--cols, 3), minmax(0,1fr)); }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.card::before { content:""; position:absolute; inset:0; background: linear-gradient(140deg, rgba(200,227,210,0.08), transparent 55%); pointer-events:none; }
.card h3 { margin-top: 0; font-size: 18px; }
.card p { margin: 0; color: var(--muted); }

.badge { display:inline-flex; align-items:center; gap:6px; padding:6px 10px; background: rgba(200,227,210,0.14); color: var(--sage); border-radius: 999px; font-size: 13px; border: 1px solid var(--line); }

.section { padding: 28px 0 18px; position: relative; }
.section-head { display:flex; flex-wrap:wrap; gap:12px; align-items:center; justify-content: space-between; margin-bottom: 14px; }
.section-sub { color: var(--muted); max-width: 760px; }

.stack { display: grid; gap: 12px; }
.two-col { display:grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 18px; align-items: start; }

.list-check { list-style:none; padding:0; margin:0; display:grid; gap:8px; }
.list-check li { padding:10px 12px; border-radius: 12px; background: rgba(255,255,255,0.04); border: 1px solid var(--line); }

.tapestry { display:grid; grid-template-columns: repeat(auto-fit,minmax(200px,1fr)); gap:12px; }
.tapestry figure { margin:0; border:1px solid var(--line); border-radius: var(--radius); overflow:hidden; background: var(--surface); box-shadow: var(--shadow); }
.tapestry figcaption { padding:12px; color:#e5eee7; font-weight:600; }

.table { width:100%; border-collapse:collapse; border:1px solid var(--line); overflow:hidden; border-radius: var(--radius); background: var(--surface); }
.table th, .table td { padding:12px 14px; border-bottom:1px solid var(--line); text-align:left; color: var(--muted); }
.table th { color:#f6f1e8; font-weight:700; background: rgba(255,255,255,0.04); }
.table tr:last-child td { border-bottom: none; }

.floating { position: fixed; right: 16px; bottom: 16px; background: rgba(18,40,30,0.9); border: 1px solid var(--line); border-radius: 16px; padding: 12px 14px; box-shadow: var(--shadow); z-index: 60; display:flex; align-items:center; gap:10px; color: var(--sage); }

.note { background: rgba(200,227,210,0.08); border:1px solid var(--line); padding: 12px 14px; border-radius: 14px; color: var(--muted); }

footer { background: #0a120e; border-top: 1px solid var(--line); margin-top: 30px; }
.footer-grid { display:grid; grid-template-columns: repeat(auto-fit,minmax(220px,1fr)); gap: 16px; padding: clamp(16px,3vw,28px) 0; }
.footer-col strong { font-family: var(--font-display); }

.reveal { opacity: 0; transform: translateY(12px); animation: revealUp 0.6s ease forwards; }
.reveal:nth-child(2) { animation-delay: .06s; }
.reveal:nth-child(3) { animation-delay: .12s; }
.reveal:nth-child(4) { animation-delay: .18s; }

@keyframes revealUp { to { opacity:1; transform: translateY(0); } }

@media (max-width: 900px) {
  .navbar { grid-template-columns: auto auto auto; }
  .nav-links { display:none; grid-column: 1 / -1; flex-direction:column; align-items:flex-start; background: rgba(12,21,17,0.96); border:1px solid var(--line); border-radius: 14px; padding: 10px; }
  .nav-links.is-open { display:flex; }
  .nav-toggle { display:inline-flex; }
  .grid { grid-template-columns: repeat(var(--cols, 2), minmax(0,1fr)); }
}

@media (max-width: 640px) {
  .grid { grid-template-columns: 1fr; }
  .navbar { grid-template-columns: auto 1fr auto; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { min-height: 240px; }
  body { line-height: 1.65; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}