:root {
  --sa-accent: #4B8EC8;
  --sa-accent-soft: #78B5D9;
  --sa-gold: #D7BC84;
  --sa-bg: #11151a;
  --sa-bg-2: #1a2027;
  --sa-paper: #f6f4ef;
  --sa-ink: #edf1f6;
  --sa-ink-dim: rgba(237, 241, 246, 0.72);
  --sa-text: #44515e;
  --sa-line: rgba(255, 255, 255, 0.12);
  --sa-panel: rgba(255, 255, 255, 0.04);
  --sa-shadow: 0 22px 60px rgba(0, 0, 0, 0.18);
  --sa-display: 'Outfit', 'Noto Sans JP', sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Noto Sans JP', sans-serif;
  color: #20252b;
  background:
    radial-gradient(circle at 78% 12%, rgba(75, 142, 200, 0.14), transparent 24%),
    linear-gradient(180deg, var(--sa-bg) 0, var(--sa-bg-2) 760px, var(--sa-paper) 760px, var(--sa-paper) 100%);
}
a { color: inherit; }

.sa-page-wrap { max-width: 1180px; margin: 0 auto; padding: 0 28px 96px; }
.sa-page-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 28px;
  position: relative;
}
.sa-page-nav::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -18px;
  height: 1px;
  background: var(--sa-line);
}
.sa-page-brand {
  font-family: var(--sa-display);
  font-size: 1.12rem;
  letter-spacing: 0.06em;
  text-decoration: none;
  color: #fff;
  font-weight: 600;
}
.sa-page-brand span { color: var(--sa-accent); }
.sa-page-back,
.sa-page-cta {
  text-decoration: none;
  font-family: var(--sa-display);
  letter-spacing: 0.08em;
}
.sa-page-back { color: rgba(255,255,255,0.78); font-size: 0.82rem; }
.sa-page-cta {
  color: #fff;
  background: var(--sa-accent);
  padding: 0.95rem 1.45rem;
  min-width: 170px;
  text-align: center;
  font-size: 0.84rem;
  font-weight: 700;
}

.sa-page-hero {
  color: #fff;
  padding: 76px 0 84px;
  position: relative;
}
.sa-page-hero::before {
  content: '';
  display: block;
  width: 100%;
  height: 1px;
  background: var(--sa-line);
  margin-bottom: 48px;
}
.sa-page-eyebrow {
  display: inline-block;
  color: var(--sa-accent);
  font-family: var(--sa-display);
  font-size: 0.78rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.sa-page-hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.85fr;
  gap: 28px;
  align-items: start;
}
.sa-page-title {
  margin: 0 0 18px;
  font-family: var(--sa-display);
  font-size: clamp(2.45rem, 5vw, 4.9rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
  max-width: 860px;
  text-wrap: balance;
}
.sa-page-title-compact {
  font-size: clamp(2.15rem, 4vw, 3.75rem);
}
.sa-page-lead {
  margin: 0;
  max-width: 700px;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--sa-ink-dim);
}
.sa-page-hero-card {
  background: var(--sa-panel);
  border: 1px solid rgba(255,255,255,0.1);
  padding: 22px 22px 24px;
  backdrop-filter: blur(10px);
  box-shadow: var(--sa-shadow);
}
.sa-page-hero-card h2 {
  margin: 0 0 10px;
  font-family: var(--sa-display);
  font-size: 1rem;
  line-height: 1.2;
}
.sa-page-hero-card p,
.sa-page-hero-card li {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.85;
  color: rgba(255,255,255,0.72);
}
.sa-page-hero-card ul { margin: 0; padding-left: 1.1rem; }

.sa-page-main { padding-top: 28px; }
.sa-page-intro {
  max-width: 820px;
  margin-bottom: 28px;
  font-size: 0.98rem;
  line-height: 1.9;
  color: #4b5662;
}
.sa-page-grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.sa-page-layout { display: grid; grid-template-columns: 280px minmax(0, 1fr); gap: 32px; align-items: start; }
.sa-page-side {
  position: sticky;
  top: 24px;
  align-self: start;
  background: rgba(255,255,255,0.82);
  border: 1px solid rgba(15,23,32,0.08);
  padding: 22px;
  box-shadow: 0 18px 44px rgba(12,18,25,0.08);
  backdrop-filter: blur(10px);
}
.sa-page-side-title {
  margin: 0 0 14px;
  color: var(--sa-accent);
  font-family: var(--sa-display);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.sa-page-side a {
  display: block;
  padding: 11px 0;
  text-decoration: none;
  color: #45515d;
  border-bottom: 1px solid rgba(15,23,32,0.07);
}
.sa-page-side a:last-child { border-bottom: none; }

.sa-page-card,
.sa-page-section {
  background: #fff;
  border: 1px solid rgba(15,23,32,0.08);
  box-shadow: 0 18px 44px rgba(12,18,25,0.06);
}
.sa-page-card { padding: 26px; }
.sa-page-section { padding: 28px; margin-bottom: 20px; }
.sa-page-card h2,
.sa-page-section h2 {
  margin: 0 0 12px;
  font-family: var(--sa-display);
  font-size: 1.55rem;
  line-height: 1.12;
  letter-spacing: -0.03em;
}
.sa-page-card h3,
.sa-page-section h3 {
  margin: 0 0 10px;
  font-family: var(--sa-display);
  font-size: 1rem;
  line-height: 1.2;
}
.sa-page-card p,
.sa-page-card li,
.sa-page-section p,
.sa-page-section li {
  margin: 0 0 14px;
  font-size: 0.95rem;
  line-height: 1.9;
  color: #4d5864;
}
.sa-page-card p:last-child,
.sa-page-section p:last-child { margin-bottom: 0; }

.sa-page-tag {
  color: var(--sa-accent);
  font-family: var(--sa-display);
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.sa-page-link {
  color: var(--sa-accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(75,142,200,0.35);
  padding-bottom: 2px;
}
.sa-page-note {
  margin-top: 26px;
  padding: 18px 20px;
  background: rgba(75,142,200,0.08);
  color: #44515d;
  font-size: 0.9rem;
  line-height: 1.85;
}
.sa-page-darknote {
  margin-top: 26px;
  padding: 20px 22px;
  background: #12171d;
  color: rgba(255,255,255,0.72);
  line-height: 1.85;
}
.sa-page-darknote strong { color: #fff; }
.sa-page-line-note {
  border-left: 3px solid var(--sa-accent);
  padding-left: 14px;
}

.sa-page-number {
  font-family: var(--sa-display);
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(75,142,200,0.76);
  margin-bottom: 10px;
}

.sa-page-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border: 1px solid rgba(15,23,32,0.08);
  box-shadow: 0 18px 44px rgba(12,18,25,0.06);
}
.sa-page-table th,
.sa-page-table td {
  padding: 18px 20px;
  border-bottom: 1px solid rgba(15,23,32,0.08);
  vertical-align: top;
  text-align: left;
}
.sa-page-table th {
  width: 32%;
  font-family: var(--sa-display);
  background: #fbfcfd;
}
.sa-page-table td {
  line-height: 1.85;
  color: #4f5964;
}
.sa-page-table tr:last-child th,
.sa-page-table tr:last-child td { border-bottom: none; }

.sa-page-chiprow {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}
.sa-page-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  border: 1px solid rgba(255,255,255,0.14);
  color: rgba(255,255,255,0.76);
  padding: 0.5rem 0.8rem;
  font-size: 0.8rem;
}

@media (max-width: 980px) {
  .sa-page-hero-grid,
  .sa-page-layout,
  .sa-page-grid-2 { grid-template-columns: 1fr; }
  .sa-page-side { position: static; }
}

@media (max-width: 640px) {
  body { background: linear-gradient(180deg, var(--sa-bg) 0, var(--sa-bg-2) 920px, var(--sa-paper) 920px, var(--sa-paper) 100%); }
  .sa-page-wrap { padding: 0 16px 72px; }
  .sa-page-nav { padding-top: 18px; }
  .sa-page-nav::after { bottom: -14px; }
  .sa-page-brand { font-size: 1rem; }
  .sa-page-cta { display: none; }
  .sa-page-hero { padding: 56px 0 60px; }
  .sa-page-hero::before { margin-bottom: 32px; }
  .sa-page-title { font-size: clamp(2.1rem, 11vw, 3.55rem); }
  .sa-page-title-compact { font-size: clamp(2rem, 10vw, 3.2rem); }
  .sa-page-section,
  .sa-page-card,
  .sa-page-side { padding: 20px; }
  .sa-page-table,
  .sa-page-table tbody,
  .sa-page-table tr,
  .sa-page-table th,
  .sa-page-table td { display: block; width: 100%; }
  .sa-page-table th { border-bottom: none; padding-bottom: 6px; }
  .sa-page-table td { padding-top: 0; }
}