:root {
  --ink: #171015;
  --ink-soft: #65545b;
  --paper: #fffaf7;
  --panel: #f8efe9;
  --line: #eadbd4;
  --red: #b5122d;
  --red-dark: #7f0d20;
  --gold: #d7ad60;
  --white: #ffffff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
  line-height: 1.78;
}

a { color: inherit; text-decoration: none; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 76px;
  padding: 0 6vw;
  background: rgba(255, 250, 247, 0.96);
  border-bottom: 1px solid rgba(181, 18, 45, 0.16);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 900;
}

.brand img {
  width: 46px;
  height: 46px;
  object-fit: cover;
  border: 1px solid rgba(215, 173, 96, 0.58);
  border-radius: 8px;
}

.brand small {
  display: block;
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 800;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--ink-soft);
  font-size: 15px;
  font-weight: 800;
}

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

.hero {
  padding: 72px 6vw 52px;
  color: var(--white);
  background: linear-gradient(115deg, #370710, #7f0d20 58%, #b5122d);
}

.hero-inner,
.index-wrap,
.article-layout,
.related-wrap {
  width: min(1120px, 100%);
  margin: 0 auto;
}

.breadcrumb {
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
}

.eyebrow,
.draft-badge {
  display: inline-flex;
  margin: 18px 0 12px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 900;
}

.draft-badge {
  padding: 5px 10px;
  color: #6c3d05;
  background: #f6dfaa;
  border-radius: 4px;
}

h1 {
  max-width: 920px;
  margin: 0;
  font-size: clamp(34px, 4.8vw, 58px);
  line-height: 1.18;
  letter-spacing: 0;
}

.summary {
  max-width: 850px;
  margin: 22px 0 0;
  color: rgba(255, 255, 255, 0.86);
  font-size: 18px;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
}

.index-wrap { padding: 58px 6vw 86px; }

.article-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 30px;
}

.article-card {
  display: grid;
  gap: 10px;
  min-height: 238px;
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 14px 34px rgba(58, 7, 16, 0.08);
}

.article-card h2 {
  margin: 0;
  color: var(--red-dark);
  font-size: 24px;
  line-height: 1.3;
}

.article-card p,
.article-card span { color: var(--ink-soft); }

.article-card strong { color: var(--red); }

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 42px;
  padding: 48px 6vw 86px;
}

article {
  min-width: 0;
  padding: 36px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

article h2 {
  margin: 34px 0 12px;
  color: var(--red-dark);
  font-size: 28px;
  line-height: 1.35;
}

article h3 {
  margin: 22px 0 8px;
  color: var(--ink);
  font-size: 21px;
}

article p { margin: 12px 0; }

article ul,
article ol { padding-left: 22px; }

article li + li { margin-top: 8px; }

.answer-box,
.source-box,
.cta-box {
  margin: 22px 0;
  padding: 20px;
  background: var(--panel);
  border-left: 4px solid var(--red);
}

.table-wrap {
  overflow-x: auto;
  margin: 20px 0;
  border: 1px solid var(--line);
  border-radius: 8px;
}

table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  background: var(--white);
}

th,
td {
  padding: 13px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--red-dark);
  background: #fbefe9;
}

.toc {
  position: sticky;
  top: 96px;
  align-self: start;
  padding: 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.toc strong {
  display: block;
  margin-bottom: 12px;
  color: var(--red-dark);
}

.toc a {
  display: block;
  padding: 7px 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.faq details {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.faq summary {
  cursor: pointer;
  color: var(--red-dark);
  font-weight: 900;
}

.related-wrap {
  padding: 0 6vw 70px;
}

.related-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.related-links a {
  padding: 16px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--red-dark);
  font-weight: 900;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 32px 6vw;
  color: rgba(255, 255, 255, 0.78);
  background: #370710;
}

.site-footer a { color: #f3dfb5; font-weight: 800; }

@media (max-width: 900px) {
  .nav-links { display: none; }
  .article-grid,
  .article-layout,
  .related-links { grid-template-columns: 1fr; }
  .toc { position: static; }
}

@media (max-width: 640px) {
  .site-header,
  .hero,
  .index-wrap,
  .article-layout,
  .related-wrap,
  .site-footer {
    padding-left: 20px;
    padding-right: 20px;
  }

  article { padding: 24px 18px; }
  h1 { font-size: 34px; }
  .summary { font-size: 16px; }
  .site-footer { display: block; }
}