:root {
  --accent: hsl(265 68% 43%);
  --accent-strong: hsl(265 72% 34%);
  --accent-soft: hsl(265 70% 94%);
  --amber: hsl(34 72% 38%);
  --amber-soft: hsl(38 84% 92%);
  --ink: #171824;
  --muted: #626579;
  --paper: #fff;
  --line: #dde0ea;
  --bg: #f6f7fb;
  --radius: 24px;
  --measure: 760px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-wrap: anywhere;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.78;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-underline-offset: 0.18em;
}

.skip {
  position: absolute;
  left: -9999px;
}

.skip:focus {
  z-index: 20;
  top: 16px;
  left: 16px;
  border-radius: 10px;
  background: var(--paper);
  padding: 8px 12px;
}

.site-header,
.site-footer,
.page-shell {
  width: min(1180px, calc(100% - 32px));
  margin-inline: auto;
}

.site-header {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-header nav,
.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
}

.site-header a,
.site-footer a {
  text-decoration: none;
}

.brand {
  flex: 0 0 auto;
  color: var(--accent);
  font-size: 1.24rem;
  font-weight: 800;
}

.page-shell {
  padding: 36px 0 96px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 0.94rem;
}

.article-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  align-items: center;
  gap: clamp(28px, 5vw, 64px);
  padding: clamp(28px, 5vw, 56px);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 8px);
  background: var(--paper);
}

.article-hero h1 {
  margin: 0.18em 0 0.28em;
  font-size: clamp(2.1rem, 5vw, 4.5rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.eyebrow {
  margin: 0;
  color: var(--accent);
  font-weight: 800;
  letter-spacing: 0.12em;
}

.lead {
  margin: 0.8em 0 0;
  color: var(--muted);
  font-size: clamp(1.04rem, 2vw, 1.27rem);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 24px;
  color: var(--muted);
  font-size: 0.94rem;
}

.article-hero picture {
  min-width: 0;
}

.article-hero img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  box-shadow: 0 24px 80px rgb(18 24 50 / 14%);
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  align-items: start;
  gap: 44px;
  margin-top: 64px;
}

.article-body {
  min-width: 0;
  max-width: var(--measure);
}

.article-body section {
  margin-bottom: 56px;
  scroll-margin-top: 20px;
}

.article-body h2 {
  margin: 0 0 0.8em;
  font-size: clamp(1.45rem, 3vw, 2.05rem);
  line-height: 1.28;
}

.article-body h3 {
  margin: 1.6em 0 0.55em;
  font-size: 1.16rem;
  line-height: 1.4;
}

.article-body p {
  margin: 0 0 1.15em;
}

.article-body ul,
.article-body ol {
  margin: 1.2em 0;
  padding-left: 1.4em;
}

.article-body li {
  margin: 0.55em 0;
}

.direct-answer,
.check-panel,
.stop-panel,
.related-panel {
  border-radius: var(--radius);
  padding: clamp(24px, 4vw, 36px);
}

.direct-answer {
  border: 1px solid hsl(265 50% 84%);
  background: var(--accent-soft);
}

.check-panel {
  border: 1px solid var(--line);
  background: var(--paper);
}

.stop-panel {
  border: 1px solid hsl(34 62% 72%);
  background: var(--amber-soft);
}

.related-panel {
  border: 1px solid var(--line);
  background: var(--paper);
}

.article-aside {
  position: sticky;
  top: 20px;
  display: grid;
  gap: 18px;
}

.aside-card {
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--paper);
  padding: 22px;
}

.aside-card h2 {
  margin: 0 0 0.75em;
  font-size: 1.08rem;
}

.aside-card ol,
.aside-card ul {
  margin: 0;
  padding-left: 1.25em;
}

.aside-card li {
  margin: 0.5em 0;
}

.aside-card a {
  color: var(--accent-strong);
  font-weight: 700;
}

.next-guide {
  display: inline-block;
  margin-top: 10px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  padding: 11px 17px;
  font-weight: 750;
  text-decoration: none;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 32px 0 48px;
  color: var(--muted);
}

@media (max-width: 900px) {
  .article-hero,
  .article-layout {
    grid-template-columns: 1fr;
  }

  .article-body {
    max-width: none;
  }

  .article-aside {
    position: static;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 600px) {
  .site-header {
    align-items: flex-start;
    padding-top: 18px;
  }

  .site-header nav {
    gap: 8px 12px;
  }

  .page-shell {
    padding-top: 22px;
  }

  .article-hero {
    padding: 22px;
  }

  .article-hero h1 {
    font-size: clamp(2rem, 12vw, 3.1rem);
  }

  .article-layout {
    margin-top: 44px;
  }

  .article-aside {
    grid-template-columns: 1fr;
  }

  .direct-answer,
  .check-panel,
  .stop-panel,
  .related-panel {
    padding: 22px;
  }
}