:root {
  --pg-ink-1: #0E1A24;
  --pg-ink-2: #2A3A4A;
  --pg-surface-1: rgba(255,255,255,0.72);
  --pg-surface-2: rgba(255,255,255,0.52);
  --pg-accent-1: #2F7D6D;
  --pg-accent-2: #6E5BD6;
  --pg-warm-1: #E7B86A;
  --pg-line-1: rgba(14,26,36,0.14);
  --pg-shadow-1: 0 18px 44px rgba(14,26,36,0.18);
}

html {
  color-scheme: light;
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    transition: none !important;
    animation: none !important;
  }
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--pg-ink-1);
  line-height: 1.6;
  background: radial-gradient(1200px 700px at 20% 10%, rgba(110,91,214,0.18), transparent 55%), radial-gradient(900px 600px at 80% 0%, rgba(47,125,109,0.16), transparent 60%), linear-gradient(180deg, rgba(255,255,255,0.92), rgba(245,248,250,0.92));
  min-height: 100vh;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  padding: 0.75rem 1rem;
  background: var(--pg-ink-1);
  color: white;
  border-radius: 999px;
  z-index: 999;
  text-decoration: none;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.site-shell {
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: clamp(1rem, 2vw, 1.5rem);
  max-width: 1100px;
  margin: 0 auto;
  padding: clamp(1rem, 3vw, 2rem);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.1rem;
  background: var(--pg-surface-1);
  border: 1px solid var(--pg-line-1);
  border-radius: 18px;
  box-shadow: var(--pg-shadow-1);
  backdrop-filter: blur(10px);
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.brand__name {
  font-weight: 750;
  letter-spacing: -0.02em;
  font-size: clamp(1.1rem, 1.6vw, 1.35rem);
  margin: 0;
}

.brand__tagline {
  margin: 0;
  color: var(--pg-ink-2);
  font-size: 0.95rem;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  justify-content: flex-end;
}

.nav a {
  text-decoration: none;
  color: var(--pg-ink-1);
  padding: 0.55rem 0.85rem;
  border-radius: 999px;
  border: 1px solid transparent;
  background: linear-gradient(180deg, rgba(255,255,255,0.65), rgba(255,255,255,0.35));
  transition: all 0.25s ease;
}

.nav a:hover {
  border-color: var(--pg-line-1);
  box-shadow: 0 10px 22px rgba(14,26,36,0.10);
  transform: translateY(-2px);
}

.nav a:focus-visible {
  outline: 3px solid rgba(110,91,214,0.45);
  outline-offset: 2px;
}

.nav a[aria-current="page"] {
  background: linear-gradient(135deg, rgba(110,91,214,0.22), rgba(47,125,109,0.18));
  border-color: var(--pg-accent-2);
  font-weight: 650;
}

main {
  display: grid;
  gap: 1.25rem;
}

.panel {
  background: var(--pg-surface-2);
  border: 1px solid var(--pg-line-1);
  border-radius: 20px;
  padding: clamp(1rem, 2.2vw, 1.5rem);
  backdrop-filter: blur(12px);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.panel:hover {
  box-shadow: 0 14px 36px rgba(14,26,36,0.14);
  transform: translateY(-3px);
}

.panel--hero {
  background: linear-gradient(135deg, rgba(110,91,214,0.16), rgba(47,125,109,0.14));
  border: 1px solid rgba(14,26,36,0.10);
}

h1 {
  margin: 0 0 0.5rem 0;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: -0.03em;
}

h2 {
  margin: 0 0 0.5rem 0;
  font-size: clamp(1.2rem, 2.2vw, 1.55rem);
  letter-spacing: -0.02em;
  color: var(--pg-ink-1);
}

h3 {
  margin: 0.8rem 0 0.4rem 0;
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  letter-spacing: -0.015em;
}

p {
  margin: 0.6rem 0;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: rgba(231,184,106,0.22);
  border: 1px solid rgba(231,184,106,0.35);
  font-weight: 650;
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1rem;
  align-items: start;
}

@media (max-width: 820px) {
  .grid-2 {
    grid-template-columns: 1fr;
  }
}

.callout {
  border-radius: 18px;
  padding: 1rem;
  background: linear-gradient(180deg, rgba(255,255,255,0.62), rgba(255,255,255,0.38));
  border: 1px solid var(--pg-line-1);
  box-shadow: 0 12px 30px rgba(14,26,36,0.10);
}

.callout h3 {
  margin-top: 0;
}

.callout ul {
  margin: 0.5rem 0 0 1.1rem;
  padding-left: 0.5rem;
}

.callout li {
  margin: 0.4rem 0;
}

.crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
  font-size: 0.95rem;
  color: var(--pg-ink-2);
  margin-bottom: 1rem;
}

.crumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
}

.crumbs li::after {
  content: "/";
  margin-left: 0.5rem;
  color: var(--pg-line-1);
}

.crumbs li:last-child::after {
  content: "";
}

.crumbs a {
  color: var(--pg-ink-1);
  text-decoration: none;
  border-bottom: 1px solid rgba(47,125,109,0.35);
  transition: border-color 0.2s ease;
}

.crumbs a:hover {
  border-bottom-color: var(--pg-accent-1);
}

.crumbs a:focus-visible {
  outline: 3px solid rgba(47,125,109,0.35);
  outline-offset: 3px;
  border-bottom-color: transparent;
  border-radius: 4px;
}

.table-wrap {
  overflow-x: auto;
  border-radius: 16px;
  border: 1px solid var(--pg-line-1);
  background: rgba(255,255,255,0.55);
  margin: 1rem 0;
}

table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  min-width: 640px;
}

caption {
  text-align: left;
  padding: 0.9rem 1rem;
  font-weight: 700;
  color: var(--pg-ink-1);
  font-size: 1.05rem;
}

thead th {
  position: sticky;
  top: 0;
  background: linear-gradient(180deg, rgba(14,26,36,0.06), rgba(14,26,36,0.02));
  backdrop-filter: blur(8px);
  text-align: left;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--pg-line-1);
  font-size: 0.95rem;
  font-weight: 700;
}

tbody td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid rgba(14,26,36,0.08);
  vertical-align: top;
}

tbody tr:nth-child(odd) {
  background: rgba(255,255,255,0.35);
}

tbody tr:hover {
  background: rgba(110,91,214,0.08);
  transition: background 0.2s ease;
}

a {
  color: var(--pg-accent-2);
  text-underline-offset: 0.18em;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--pg-accent-1);
}

a:focus-visible {
  outline: 3px solid rgba(110,91,214,0.40);
  outline-offset: 3px;
  border-radius: 8px;
}

details {
  border: 1px solid var(--pg-line-1);
  border-radius: 16px;
  background: rgba(255,255,255,0.58);
  padding: 0.25rem 0.25rem;
  box-shadow: 0 10px 26px rgba(14,26,36,0.08);
  transition: box-shadow 0.3s ease;
}

details:hover {
  box-shadow: 0 14px 32px rgba(14,26,36,0.12);
}

details + details {
  margin-top: 0.75rem;
}

details[open] {
  background: rgba(255,255,255,0.68);
}

summary {
  cursor: pointer;
  list-style: none;
  padding: 0.85rem 1rem;
  font-weight: 750;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  transition: background 0.2s ease;
}

summary:hover {
  background: rgba(110,91,214,0.06);
  border-radius: 14px;
}

summary:focus-visible {
  outline: 3px solid rgba(110,91,214,0.40);
  outline-offset: 2px;
  border-radius: 14px;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: "＋";
  font-weight: 900;
  color: var(--pg-accent-1);
  flex: 0 0 auto;
  font-size: 1.3rem;
  transition: transform 0.3s ease, color 0.3s ease;
}

details[open] summary::after {
  content: "－";
  color: var(--pg-accent-2);
  transform: rotate(180deg);
}

details > .details-body {
  padding: 0 1rem 1rem 1rem;
  color: var(--pg-ink-2);
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

footer {
  padding: 1rem 1.1rem;
  border-radius: 18px;
  border: 1px solid var(--pg-line-1);
  background: rgba(255,255,255,0.62);
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  justify-content: space-between;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.footer-links a {
  text-decoration: none;
  padding: 0.35rem 0.6rem;
  border-radius: 999px;
  border: 1px solid rgba(14,26,36,0.10);
  background: rgba(255,255,255,0.40);
  color: var(--pg-ink-1);
  transition: all 0.25s ease;
}

.footer-links a:hover {
  background: rgba(255,255,255,0.70);
  border-color: var(--pg-accent-1);
  transform: translateY(-1px);
}

.footer-links a:focus-visible {
  outline: 3px solid rgba(47,125,109,0.40);
  outline-offset: 2px;
}

ul {
  line-height: 1.7;
}

li {
  margin: 0.35rem 0;
}

strong {
  color: var(--pg-ink-1);
  font-weight: 700;
}

@media (max-width: 640px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }
  .nav {
    width: 100%;
    justify-content: flex-start;
  }
}