:root {
  color-scheme: light;
  --ink: #171a1d;
  --muted: #606870;
  --line: #dfe3e6;
  --soft: #f4f6f7;
  --paper: #ffffff;
  --brand: #b42318;
  --brand-dark: #7a1913;
  --green: #176b4d;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  line-height: 1.75;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid rgba(223, 227, 230, 0.9);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
}

.nav {
  display: flex;
  min-height: 64px;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: 16px;
  font-weight: 800;
  text-decoration: none;
}

.brand img {
  width: 34px;
  height: 34px;
  object-fit: contain;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--muted);
  font-size: 14px;
}

.nav-links a {
  text-decoration: none;
}

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

.hero {
  border-bottom: 1px solid var(--line);
  background: #f7f8f8;
}

.hero-inner {
  display: grid;
  min-height: 570px;
  max-width: var(--max);
  margin: 0 auto;
  padding: 76px 24px 58px;
  grid-template-columns: minmax(0, 1.3fr) minmax(280px, 0.7fr);
  align-items: center;
  gap: 72px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--brand);
  font-size: 13px;
  font-weight: 800;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.25;
  letter-spacing: 0;
}

h1 {
  max-width: 720px;
  margin-bottom: 22px;
  font-size: clamp(38px, 6vw, 68px);
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(26px, 3vw, 36px);
}

h3 {
  margin-bottom: 8px;
  font-size: 19px;
}

.lead {
  max-width: 720px;
  margin: 0;
  color: var(--muted);
  font-size: 18px;
}

.actions {
  display: flex;
  margin-top: 28px;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 6px;
  align-items: center;
  justify-content: center;
  background: var(--paper);
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
}

.button.primary {
  border-color: var(--brand);
  background: var(--brand);
  color: #fff;
}

.button:hover {
  border-color: var(--brand);
}

.identity {
  padding: 30px;
  border: 1px solid var(--line);
  border-top: 4px solid var(--brand);
  background: var(--paper);
}

.identity img {
  display: block;
  width: 82px;
  height: 82px;
  margin-bottom: 24px;
  object-fit: contain;
}

.identity dl {
  margin: 0;
}

.identity-row {
  display: grid;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  grid-template-columns: 82px 1fr;
  gap: 12px;
}

.identity-row:last-child {
  border-bottom: 0;
}

dt {
  color: var(--muted);
}

dd {
  margin: 0;
  font-weight: 700;
}

.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 64px 24px;
}

.section + .section {
  border-top: 1px solid var(--line);
}

.section-intro {
  max-width: 760px;
  margin: 0 0 30px;
  color: var(--muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

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

.item {
  min-height: 100%;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--paper);
}

.item p {
  margin: 0;
  color: var(--muted);
}

.item .label {
  display: block;
  margin-bottom: 15px;
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
}

.plain-list {
  display: grid;
  margin: 0;
  padding: 0;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 32px;
  list-style: none;
}

.plain-list li {
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}

.notice {
  padding: 24px;
  border-left: 4px solid var(--green);
  background: var(--soft);
}

.notice p {
  margin: 0;
}

.article-list {
  display: grid;
  gap: 0;
}

.article-link {
  display: grid;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 20px;
  text-decoration: none;
}

.article-link:first-child {
  border-top: 1px solid var(--line);
}

.article-link strong {
  display: block;
  margin-bottom: 4px;
  font-size: 18px;
}

.article-link span {
  color: var(--muted);
  font-size: 14px;
}

.article-link b {
  color: var(--brand);
  font-size: 14px;
}

.contact-band {
  background: var(--ink);
  color: #fff;
}

.contact-band .section {
  display: flex;
  padding-top: 48px;
  padding-bottom: 48px;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.contact-band h2,
.contact-band p {
  margin-bottom: 0;
}

.contact-band p {
  color: #c8cdd1;
}

.contact-band .button {
  border-color: #fff;
  background: #fff;
  color: var(--ink);
  white-space: nowrap;
}

.article-hero {
  max-width: 880px;
  margin: 0 auto;
  padding: 74px 24px 38px;
}

.article-hero h1 {
  font-size: clamp(34px, 5vw, 52px);
}

.article-meta {
  display: flex;
  margin-top: 22px;
  flex-wrap: wrap;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
}

.article-body {
  max-width: 880px;
  margin: 0 auto;
  padding: 30px 24px 72px;
  border-top: 1px solid var(--line);
}

.article-body p,
.article-body ul,
.article-body ol {
  margin-top: 0;
  margin-bottom: 20px;
}

.article-body h2 {
  margin-top: 44px;
  font-size: 28px;
}

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

.article-body li {
  margin-bottom: 8px;
}

.source-note {
  margin-top: 42px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

.footer {
  padding: 28px 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  text-align: center;
  font-size: 13px;
}

@media (max-width: 800px) {
  .nav {
    padding: 0 16px;
  }

  .nav-links {
    display: none;
  }

  .hero-inner {
    min-height: auto;
    padding: 52px 18px 34px;
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .section {
    padding: 46px 18px;
  }

  .grid,
  .grid.two,
  .plain-list {
    grid-template-columns: 1fr;
  }

  .article-link {
    grid-template-columns: 1fr;
    gap: 8px;
  }

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

  .contact-band .button {
    width: 100%;
  }
}