.content-shell {
  width: min(1020px, calc(100% - 32px));
  margin: 0 auto;
  padding: 8px 0 40px;
}

/* 联系我们与隐私政策共用一个页面，隐私政策通过页内锚点直接定位。 */
#privacy {
  scroll-margin-top: 88px;
}

.content-topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 16px;
  margin-bottom: 20px;
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid rgba(255, 255, 255, 0.58);
  backdrop-filter: blur(22px);
  border-radius: 18px;
  box-shadow: 0 10px 28px rgba(16, 32, 51, 0.08);
}

.content-link {
  color: var(--accent-strong);
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 700;
}

.content-frame {
  padding: 12px 0 24px;
}

.content-header {
  display: grid;
  gap: 14px;
  margin-bottom: 20px;
}

.content-kicker,
.content-meta,
.content-tag {
  color: var(--accent);
  font-family: var(--font-display);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.content-header h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 5vw, 3rem);
  letter-spacing: -0.05em;
  line-height: 0.96;
}

.content-summary {
  max-width: 62ch;
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.content-card,
.directory-card,
.manual-directory-card {
  border: 0;
  background: transparent;
  border-radius: 0;
  box-shadow: none;
}

.content-card {
  padding: 0;
}

.content-prose {
  color: var(--text);
  line-height: 1.85;
  max-width: 74ch;
}

.content-prose h2,
.content-prose h3,
.content-prose h4 {
  margin: 1.8em 0 0.5em;
  font-family: var(--font-display);
  letter-spacing: -0.03em;
}

.content-prose p,
.content-prose ul,
.content-prose ol,
.content-prose blockquote {
  margin: 0 0 1em;
}

.content-prose ul,
.content-prose ol {
  padding-left: 1.2rem;
}

.content-prose blockquote {
  padding: 14px 16px;
  color: var(--muted);
  background: rgba(11, 125, 179, 0.06);
  border-left: 3px solid rgba(11, 125, 179, 0.32);
  border-radius: 0 14px 14px 0;
}

.content-prose code {
  padding: 0.15em 0.4em;
  background: rgba(16, 32, 51, 0.06);
  border-radius: 6px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.92em;
}

.content-prose pre {
  margin: 0 0 1.2em;
  padding: 16px;
  overflow-x: auto;
  background: #102033;
  color: #eaf4fb;
  border-radius: 14px;
}

.content-prose pre code {
  padding: 0;
  background: transparent;
  color: inherit;
}

.content-footer {
  margin-top: 22px;
  padding-top: 14px;
  border-top: 1px solid rgba(16, 32, 51, 0.08);
  color: var(--muted);
  font-size: 0.88rem;
}

.directory-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.directory-head h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 4vw, 2.6rem);
  letter-spacing: -0.05em;
}

.directory-grid {
  display: grid;
  gap: 14px;
}

.directory-card {
  display: grid;
  gap: 10px;
  padding: 0 0 14px;
  border-bottom: 1px solid rgba(16, 32, 51, 0.08);
}

.directory-card h2,
.manual-directory-card h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.02rem;
  letter-spacing: -0.03em;
}

.directory-card p,
.manual-directory-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
  font-size: 0.92rem;
}

.directory-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.manual-directory-groups {
  display: grid;
  gap: 18px;
}

.manual-directory-group {
  display: grid;
  gap: 12px;
}

.manual-directory-group h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.06rem;
}

.manual-directory-card {
  display: grid;
  gap: 10px;
  padding: 18px 20px;
}

.manual-library-groups {
  display: grid;
  gap: 24px;
}

.manual-library-group {
  display: grid;
  gap: 14px;
}

.manual-library-group h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.08rem;
  letter-spacing: -0.03em;
}

.manual-library-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.manual-library-card {
  position: relative;
  display: grid;
  gap: 10px;
  padding: 18px 18px 18px 24px;
  border: 1px solid rgba(16, 32, 51, 0.08);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.82), rgba(244, 248, 252, 0.9));
  border-radius: 20px;
  box-shadow: 0 18px 36px rgba(16, 32, 51, 0.06);
}

.manual-spine {
  position: absolute;
  top: 12px;
  bottom: 12px;
  left: 10px;
  width: 6px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--accent), var(--accent-strong));
}

.manual-library-card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: -0.03em;
}

.manual-format {
  color: var(--accent-strong);
  font-family: var(--font-display);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.contact-hero,
.contact-section {
  display: grid;
  gap: 18px;
}

.contact-hero {
  margin-bottom: 28px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.contact-block {
  display: grid;
  gap: 10px;
  padding: 18px 0 16px;
  border-bottom: 1px solid rgba(16, 32, 51, 0.08);
}

.contact-label {
  margin: 0;
  color: var(--accent);
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.contact-block h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: -0.03em;
}

.contact-block p,
.contact-list {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.contact-list {
  padding-left: 1.1rem;
}

.privacy-section {
  margin-top: 34px;
  padding-top: 10px;
  border-top: 1px solid rgba(16, 32, 51, 0.08);
}

.content-site-footer {
  margin-top: 30px;
  padding-top: 14px;
  border-top: 1px solid rgba(16, 32, 51, 0.08);
  color: var(--muted);
  font-size: 0.84rem;
}

.content-site-footer-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 18px;
  margin: 0;
}

@media (max-width: 640px) {
  .content-shell {
    width: min(100% - 20px, 980px);
  }

  .content-topbar {
    padding: 10px 12px;
    border-radius: 14px;
  }

  .content-card,
  .directory-card,
  .manual-directory-card {
    padding: 16px;
    border-radius: 18px;
  }

  .content-site-footer-line {
    align-items: flex-start;
    justify-content: flex-start;
  }
}