:root {
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  overflow-x: hidden;
}

body {
  margin: 0;
  overflow-x: hidden;
  overflow-wrap: anywhere;
  background: var(--color-bg, #f8fafc);
  color: var(--color-text, #152033);
  font-family: var(--font-body, Arial, sans-serif);
  line-height: 1.66;
}

a {
  color: inherit;
}

a:focus-visible {
  outline: 3px solid var(--color-accent, #f59e0b);
  outline-offset: 4px;
}

.site-header,
.intro-inner,
.explainer-inner,
.checklist-inner,
.disclaimer-inner,
.detail-main,
.explainer-page,
footer {
  width: min(100% - 32px, 1160px);
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 26px 0;
}

.brand {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 12px;
  color: var(--color-text, #152033);
  font-weight: 800;
  text-decoration: none;
}

.brand-logo {
  display: grid;
  flex: 0 0 auto;
  width: 42px;
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid var(--color-primary, #0f766e);
  color: var(--color-primary, #0f766e);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.brand-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand-name {
  min-width: 0;
  overflow-wrap: anywhere;
}

.site-nav,
footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px 18px;
}

.site-nav a,
footer a {
  color: var(--color-muted, #5b677a);
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
}

.site-nav a:hover,
footer a:hover {
  color: var(--color-primary, #0f766e);
}

.intro-band {
  background: var(--color-surface, #ffffff);
  border-bottom: 1px solid var(--color-border, #dbe3ea);
}

.intro-inner {
  padding: clamp(36px, 6vw, 64px) 0 clamp(30px, 5vw, 52px);
}

.intro-kicker {
  margin: 0 0 14px;
  color: var(--color-primary, #0f766e);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.intro-inner p:not(.intro-kicker) {
  max-width: 680px;
  color: var(--color-muted, #5b677a);
  font-size: clamp(1rem, 1.6vw, 1.12rem);
}

.featured-image {
  min-width: 0;
  margin: 24px 0 0;
  overflow: hidden;
  background: var(--color-bg, #f8fafc);
  border: 1px solid var(--color-border, #dbe3ea);
}

.featured-image img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.explainer-band {
  background: var(--color-bg, #f8fafc);
  border-bottom: 1px solid var(--color-border, #dbe3ea);
}

.explainer-inner {
  padding: clamp(32px, 5vw, 56px) 0;
}

.explainer-steps {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.explainer-step {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--color-border, #dbe3ea);
}

.explainer-step:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.step-number {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-primary, #0f766e);
  color: var(--color-primary, #0f766e);
  font-family: var(--font-heading, Georgia, serif);
  font-size: 0.92rem;
  font-weight: 800;
}

.step-body {
  min-width: 0;
}

.step-body h3 {
  margin: 0 0 6px;
}

.step-body p {
  margin: 0;
  color: var(--color-muted, #5b677a);
  font-size: 0.96rem;
}

.checklist-band {
  background: var(--color-surface, #ffffff);
  border-bottom: 1px solid var(--color-border, #dbe3ea);
}

.checklist-inner {
  padding: clamp(32px, 5vw, 56px) 0;
}

.checklist-inner > p {
  max-width: 680px;
  color: var(--color-muted, #5b677a);
}

.document-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: 18px;
  margin-top: 22px;
}

.document-card {
  min-width: 0;
  padding: clamp(18px, 3vw, 24px);
  background: var(--color-bg, #f8fafc);
  border: 1px solid var(--color-border, #dbe3ea);
  border-top: 3px solid var(--color-accent, #f59e0b);
}

.document-card h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.document-card p {
  margin: 0;
  color: var(--color-muted, #5b677a);
  font-size: 0.92rem;
}

.disclaimer-band {
  background: color-mix(in srgb, var(--color-muted, #5b677a) 10%, var(--color-bg, #f8fafc));
  border-bottom: 1px solid var(--color-border, #dbe3ea);
}

.disclaimer-inner {
  padding: clamp(24px, 4vw, 36px) 0;
  border-left: 4px solid var(--color-muted, #5b677a);
  padding-left: 20px;
}

.disclaimer-label {
  margin: 0 0 10px;
  color: var(--color-text, #152033);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.disclaimer-inner p:not(.disclaimer-label) {
  margin: 0;
  max-width: 760px;
  color: var(--color-muted, #5b677a);
  font-size: 0.95rem;
}

.detail-main {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 300px);
  grid-template-areas: "article resource";
  gap: 28px;
  margin-top: 40px;
  padding-bottom: 48px;
}

.article-body,
.resource-panel,
.explainer-page {
  min-width: 0;
}

.article-body {
  grid-area: article;
  padding: clamp(22px, 4vw, 30px);
  background: var(--color-surface, #ffffff);
  border: 1px solid var(--color-border, #dbe3ea);
}

.resource-panel {
  grid-area: resource;
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-self: start;
  padding: clamp(20px, 4vw, 26px);
  background: var(--color-surface, #ffffff);
  border: 1px solid var(--color-border, #dbe3ea);
  border-top: 3px solid var(--color-primary, #0f766e);
}

.resource-panel h2 {
  margin: 0;
  font-size: 1.15rem;
}

.article-body a,
.resource-panel a,
.explainer-page a {
  color: var(--color-primary, #0f766e);
  font-weight: 700;
  text-decoration: underline;
}

h1,
h2,
h3 {
  margin: 0 0 16px;
  font-family: var(--font-heading, Georgia, serif);
  line-height: 1.15;
  overflow-wrap: anywhere;
}

h1 {
  max-width: 800px;
  font-size: clamp(1.9rem, 4.6vw, 3.1rem);
}

h2 {
  font-size: clamp(1.25rem, 2.4vw, 1.7rem);
}

h3 {
  font-size: 1.05rem;
}

p {
  margin: 0 0 16px;
}

.explainer-page {
  max-width: 760px;
  margin-top: 44px;
  padding-bottom: 56px;
}

.explainer-page > p {
  max-width: 720px;
  color: var(--color-muted, #5b677a);
  font-size: clamp(1rem, 1.6vw, 1.05rem);
}

footer {
  justify-content: flex-start;
  margin-top: 0;
  padding: 26px 0;
  border-top: 1px solid var(--color-border, #dbe3ea);
  color: var(--color-muted, #5b677a);
}

@media (max-width: 640px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .intro-inner {
    padding: 28px 0 24px;
  }

  .detail-main {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "article"
      "resource";
  }

  h1 {
    font-size: clamp(1.8rem, 9vw, 2.4rem);
  }
}

@media (min-width: 641px) {
  body.layout-2 .detail-main {
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
    grid-template-areas: "resource article";
  }

  body.layout-3 .intro-inner {
    padding: clamp(56px, 8vw, 96px) 0 clamp(48px, 7vw, 84px);
  }

  body.layout-3 .intro-inner h1 {
    font-size: clamp(2.3rem, 6vw, 4rem);
  }

  body.layout-3 .detail-main {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "article"
      "resource";
  }

  body.layout-4 .site-header,
  body.layout-4 .intro-inner,
  body.layout-4 .explainer-inner,
  body.layout-4 .checklist-inner,
  body.layout-4 .disclaimer-inner,
  body.layout-4 .detail-main,
  body.layout-4 .explainer-page,
  body.layout-4 footer {
    width: min(100% - 32px, 860px);
  }

  body.layout-4 .detail-main {
    gap: 16px;
  }

  body.layout-4 .document-cards {
    gap: 10px;
  }
}

img {
  max-width: 100%;
  height: auto;
}