.site-header {
  background: var(--color-navy);
  color: var(--color-paper);
  padding: 0.75rem max(1rem, calc((100vw - var(--page-width)) / 2));
}

.site-header nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.85rem;
  align-items: center;
}

.site-header a {
  color: var(--color-paper);
  font-weight: 700;
}

.alternate-domain-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  max-inline-size: 100%;
  margin-block-start: 0.75rem;
  padding: 0.5rem;
  background: var(--color-teal-soft);
  border: 1px solid var(--color-teal);
  border-radius: var(--radius-sm);
}

.alternate-domain-nav a {
  display: inline-flex;
  align-items: center;
  min-block-size: 44px;
  min-inline-size: 0;
  max-inline-size: 100%;
  padding-inline: 0.75rem;
  color: var(--color-navy);
  overflow-wrap: anywhere;
}

main {
  width: min(100% - 2rem, var(--page-width));
  margin: 1.5rem auto 3rem;
}

article {
  min-width: 0;
}

article > section,
.persona-disclosure,
.content-limitations,
.source-list,
.faq-list,
.step-list,
.evidence-module {
  margin-block: 1.25rem;
  padding: 1rem;
  background: var(--color-paper);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.hero {
  padding: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.hero h1,
.hero p {
  margin: 1rem;
}

.hero h1 {
  color: var(--color-navy);
  font-size: clamp(1.8rem, 5vw, 3rem);
  line-height: 1.2;
}

.direct-answer {
  border-inline-start: 0.35rem solid var(--color-teal);
}

.content-limitations {
  background: var(--color-amber-soft);
  border-color: var(--color-amber);
}

.task-grid,
.risk-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  margin-block: 1.25rem;
}

.task-grid > *,
.risk-grid > * {
  min-width: 0;
  padding: 1rem;
  background: var(--color-paper);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-card);
}

.risk-grid > * {
  border-inline-start: 0.35rem solid var(--color-amber);
}

.guide-card-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
}

.guide-card {
  min-width: 0;
  padding: 0.75rem;
  overflow-wrap: anywhere;
  background: var(--color-warm-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.guide-card picture,
.guide-card img {
  display: block;
  max-inline-size: 100%;
}

.guide-card a {
  display: block;
  max-inline-size: 100%;
  padding-block: 0.75rem;
}

@media (min-width: 48rem) {
  .guide-card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.decision-support {
  border-inline-start: 0.35rem solid var(--color-teal);
}

.decision-support__items {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr));
  gap: 1rem;
}

.decision-support__item {
  min-width: 0;
  max-inline-size: 100%;
  padding: 1rem;
  overflow-wrap: anywhere;
  background: var(--color-teal-soft);
  border: 1px solid var(--color-teal);
  border-radius: var(--radius-sm);
}

.decision-support__item h3,
.decision-support__item dl {
  margin-block: 0;
}

.decision-support__item dl > div {
  margin-block-start: 0.75rem;
}

.decision-support__item dt {
  color: var(--color-navy);
  font-weight: 700;
}

.decision-support__item dd {
  min-width: 0;
  margin-inline-start: 0;
  overflow-wrap: anywhere;
}

.semantic-diagram {
  min-width: 0;
  max-inline-size: 100%;
  overflow-x: clip;
}

.semantic-diagram__explanation {
  padding: 0.75rem;
  overflow-wrap: anywhere;
  background: var(--color-warm-white);
  border-inline-start: 0.25rem solid var(--color-amber);
}

.semantic-diagram .decision-support__items {
  grid-template-columns: minmax(0, 1fr);
  margin: 0;
  padding: 0;
  list-style-position: inside;
}

.semantic-diagram[data-diagram-id="risk-matrix"] .decision-support__item,
.semantic-diagram[data-diagram-id="url-anatomy"] .decision-support__item {
  border-block-start: 0.25rem solid var(--color-amber);
}

.semantic-diagram[data-diagram-id="verification-flow"] .decision-support__item,
.semantic-diagram[data-diagram-id="privacy-spread"] .decision-support__item,
.semantic-diagram[data-diagram-id="incident-timeline"] .decision-support__item,
.semantic-diagram[data-diagram-id="report-delete-flow"] .decision-support__item {
  border-block-start: 0.25rem solid var(--color-teal);
}

@media (min-width: 48rem) {
  .semantic-diagram .decision-support__items {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.step-list ol,
.source-list ul {
  margin: 0;
  padding-inline-start: 1.4rem;
}

.step-list li,
.source-list li {
  margin-block: 0.7rem;
}

.source-list {
  background: var(--color-teal-soft);
  border-color: var(--color-teal);
}

.source-list a {
  display: inline-flex;
  align-items: center;
  min-block-size: 44px;
  min-inline-size: 0;
  max-inline-size: 100%;
  overflow-wrap: anywhere;
}

.persona-disclosure {
  color: var(--color-muted);
}

.faq-list details + details {
  margin-block-start: 0.75rem;
}

.faq-list summary {
  cursor: pointer;
  color: var(--color-navy);
  font-weight: 700;
}

.status-label {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding-inline: 0.65rem;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-weight: 700;
}

.status-label--verified {
  color: var(--color-teal);
}

.status-label--verified::before {
  margin-inline-end: 0.35rem;
  content: "已核验：";
}

.status-label--risk {
  color: var(--color-amber);
}

.status-label--risk::before {
  margin-inline-end: 0.35rem;
  content: "需注意：";
}

.site-footer {
  padding: 1.5rem max(1rem, calc((100vw - var(--page-width)) / 2));
  background: var(--color-navy-soft);
  color: var(--color-paper);
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: var(--color-paper);
}