:root {
  color-scheme: light;
  --ink: #12212f;
  --muted: #526171;
  --paper: #f7f9fc;
  --surface: #ffffff;
  --soft: #eaf0f7;
  --line: #d7e0ea;
  --blue: #245bff;
  --green: #12786b;
  --gold: #b86b00;
  --red: #a7332d;
  --shadow: 0 18px 44px rgba(18, 33, 47, 0.1);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(36, 91, 255, 0.07), transparent 360px),
    var(--paper);
  font-size: 16px;
  line-height: 1.6;
}

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 20;
  padding: 10px 12px;
  border-radius: 8px;
  color: #ffffff;
  background: var(--ink);
}

.skip-link:focus {
  top: 12px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(215, 224, 234, 0.8);
  background: rgba(247, 249, 252, 0.92);
  backdrop-filter: blur(14px);
}

.nav {
  display: flex;
  width: min(1160px, calc(100% - 32px));
  min-height: 68px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 900;
  letter-spacing: 0;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 8px;
  color: #ffffff;
  background: var(--ink);
  font-size: 0.82rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-links a,
.button {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 8px;
  padding: 9px 12px;
  font-weight: 800;
  text-decoration: none;
}

.nav-links a {
  color: var(--muted);
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--ink);
  background: var(--soft);
}

.button {
  border: 1px solid var(--ink);
  color: #ffffff;
  background: var(--ink);
}

.button.secondary {
  border-color: var(--line);
  color: var(--ink);
  background: var(--surface);
}

.button.ghost {
  border-color: transparent;
  color: var(--ink);
  background: transparent;
}

main {
  display: block;
}

.section {
  padding: 64px 0;
}

.section.tight {
  padding: 40px 0;
}

.container {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  padding: 72px 0 48px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(300px, 0.95fr);
  gap: 34px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.08;
  letter-spacing: 0;
}

h1 {
  max-width: 880px;
  font-size: clamp(2.45rem, 6vw, 5.15rem);
}

h2 {
  font-size: clamp(1.8rem, 4vw, 3rem);
}

h3 {
  font-size: 1.18rem;
}

p {
  margin: 0;
}

.lede {
  max-width: 720px;
  margin-top: 20px;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.hero-panel,
.panel,
.article-card,
.resource-card,
.check-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.hero-panel {
  padding: 22px;
}

.system-map {
  display: grid;
  gap: 10px;
}

.node {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 14px;
  align-items: start;
  min-height: 62px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfdff;
}

.node strong {
  color: var(--ink);
}

.node span {
  color: var(--muted);
  font-size: 0.95rem;
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 24px;
}

.section-head p {
  max-width: 600px;
  color: var(--muted);
}

.grid {
  display: grid;
  gap: 16px;
}

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.article-card,
.resource-card,
.check-card,
.panel {
  padding: 20px;
}

.article-card,
.resource-card {
  display: flex;
  min-height: 220px;
  flex-direction: column;
  gap: 14px;
  text-decoration: none;
}

.article-card:hover,
.article-card:focus-visible,
.resource-card:hover,
.resource-card:focus-visible {
  border-color: rgba(36, 91, 255, 0.45);
  transform: translateY(-1px);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  border-radius: 999px;
  padding: 4px 9px;
  color: var(--green);
  background: rgba(18, 120, 107, 0.1);
  font-size: 0.78rem;
  font-weight: 900;
}

.article-card p,
.resource-card p,
.check-card p,
.panel p {
  color: var(--muted);
}

.card-link {
  margin-top: auto;
  color: var(--blue);
  font-weight: 900;
}

.band {
  border-block: 1px solid var(--line);
  background: var(--surface);
}

.list {
  display: grid;
  gap: 10px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.list li {
  padding: 12px 14px;
  border-left: 4px solid var(--blue);
  background: var(--soft);
}

.inquiry {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.75fr);
  gap: 18px;
  align-items: stretch;
}

.status-box {
  border: 1px solid rgba(184, 107, 0, 0.35);
  border-radius: 8px;
  padding: 18px;
  background: rgba(184, 107, 0, 0.1);
}

.status-box strong {
  display: block;
  margin-bottom: 6px;
}

.page-title {
  padding: 56px 0 26px;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 760px) minmax(220px, 1fr);
  gap: 36px;
  align-items: start;
}

.article-body {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: clamp(22px, 4vw, 38px);
  background: var(--surface);
}

.article-body h2,
.article-body h3 {
  margin-top: 30px;
}

.article-body p,
.article-body li {
  color: #304052;
}

.article-body p,
.article-body ul,
.article-body ol {
  margin-top: 14px;
}

.article-body code {
  border-radius: 6px;
  padding: 2px 5px;
  background: var(--soft);
}

.aside {
  position: sticky;
  top: 88px;
  display: grid;
  gap: 12px;
}

.footer {
  border-top: 1px solid var(--line);
  padding: 28px 0;
  color: var(--muted);
  background: var(--surface);
}

.footer .container {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

@media (max-width: 860px) {
  .nav {
    align-items: center;
    flex-direction: row;
    flex-wrap: wrap;
    padding: 10px 0;
  }

  .nav-links {
    width: 100%;
    justify-content: flex-start;
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .hero-grid,
  .grid.three,
  .grid.two,
  .inquiry,
  .article-layout {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 48px;
  }

  .section {
    padding: 46px 0;
  }

  .section-head {
    align-items: start;
    flex-direction: column;
  }

  .aside {
    position: static;
  }
}

@media (max-width: 520px) {
  .node {
    grid-template-columns: 1fr;
  }

  .button {
    width: 100%;
  }

  .actions {
    width: 100%;
  }

  .nav-links {
    gap: 2px;
  }

  .nav-links a {
    flex: 0 0 auto;
    min-height: 34px;
    padding: 6px 8px;
    font-size: 0.9rem;
  }
}