:root {
  --bg: #0d0f13;
  --bg-soft: #14171d;
  --line: #262b34;
  --text: #e6e8ec;
  --muted: #9aa2b1;
  --accent: #6ee7a8;
  --accent-dim: #2f6b4f;
  --max: 46rem;
}

* { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic Medium",
    system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.9;
  letter-spacing: 0.02em;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* --- hero --- */

.hero {
  padding: clamp(4rem, 12vw, 8rem) 0 clamp(3rem, 8vw, 5rem);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(60rem 30rem at 50% -10rem, rgba(110, 231, 168, 0.08), transparent 70%),
    var(--bg);
}

.eyebrow {
  margin: 0 0 1.5rem;
  font-size: 0.8125rem;
  letter-spacing: 0.16em;
  color: var(--accent);
  text-transform: uppercase;
}

h1 {
  margin: 0 0 1.75rem;
  font-size: clamp(1.9rem, 6vw, 3rem);
  line-height: 1.45;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.lead {
  margin: 0 0 2rem;
  font-size: clamp(1rem, 2.4vw, 1.125rem);
  color: var(--muted);
  max-width: 34rem;
}

.status {
  display: inline-block;
  margin: 0;
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--accent-dim);
  border-radius: 999px;
  font-size: 0.8125rem;
  color: var(--accent);
  line-height: 1.6;
}

/* --- sections --- */

main section {
  padding: clamp(2.5rem, 7vw, 4rem) 0;
  border-bottom: 1px solid var(--line);
}

main section:last-child {
  border-bottom: 0;
}

h2 {
  margin: 0 0 1.25rem;
  font-size: clamp(1.25rem, 3.4vw, 1.5rem);
  font-weight: 700;
  letter-spacing: 0.02em;
}

h3 {
  margin: 0 0 0.6rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
}

p {
  margin: 0 0 1.1rem;
}

p:last-child {
  margin-bottom: 0;
}

strong {
  font-weight: 700;
}

.note,
.fine {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.8;
}

/* --- flow --- */

.flow {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 0.75rem;
  margin: 0 0 1.5rem;
  flex-wrap: wrap;
}

.node {
  flex: 1 1 8rem;
  min-width: 8rem;
  padding: 1.1rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 0.6rem;
  background: var(--bg-soft);
  text-align: center;
}

.node.accent {
  border-color: var(--accent-dim);
  background: linear-gradient(180deg, rgba(110, 231, 168, 0.07), transparent);
}

.node-label {
  display: block;
  font-weight: 700;
  margin-bottom: 0.3rem;
}

.node-note {
  display: block;
  font-size: 0.8125rem;
  color: var(--muted);
  line-height: 1.7;
}

.arrow {
  align-self: center;
  color: var(--muted);
  font-size: 1.1rem;
}

.flow-note {
  color: var(--muted);
  font-size: 0.9375rem;
}

/* --- cards --- */

.cards {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
}

.card {
  padding: 1.35rem 1.4rem;
  border: 1px solid var(--line);
  border-radius: 0.6rem;
  background: var(--bg-soft);
}

.card p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--muted);
  line-height: 1.85;
}

/* --- lists --- */

.needs {
  margin: 0;
  padding: 0;
  list-style: none;
}

.needs li {
  padding: 0.7rem 0 0.7rem 1.2rem;
  border-bottom: 1px solid var(--line);
  position: relative;
  color: var(--muted);
}

.needs li:last-child {
  border-bottom: 0;
}

.needs li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.45rem;
  width: 0.35rem;
  height: 0.35rem;
  border-radius: 50%;
  background: var(--accent-dim);
}

.needs strong {
  color: var(--text);
}

/* --- footer --- */

footer {
  padding: 2.5rem 0 3.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

footer p:first-child {
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.08em;
  margin-bottom: 0.9rem;
}

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}