:root {
  --bg: #ffffff;
  --text: #222222;
  --text-soft: #4d4d4d;
  --line: #e9e9e9;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
}

html {
  scroll-padding-top: 72px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: Arial, Helvetica, "PingFang SC", "Microsoft YaHei", sans-serif;
}

a,
span,
.btn {
  font-family: inherit;
}

p,
li {
  color: var(--text-soft);
}

#page_header {
  position: relative;
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.header_wrap {
  max-width: 1180px;
  padding: 1.3rem 2rem 1rem;
}

#blog_name a {
  color: #222;
  font-weight: 600;
}

.menus_items li a {
  color: #444;
}

.menus_items li a::before {
  height: 2px;
  background: #c9c9c9;
}

#page_main {
  max-width: 1180px;
  margin-top: 2.6rem;
}

.side-card {
  width: 22%;
  margin-right: 0;
}

.side-card .card-wrap {
  padding: 0 1rem 0 0;
  background: transparent;
  border: 0;
  box-shadow: none;
}

.author-avatar {
  display: block;
  width: auto;
  height: auto;
  margin-bottom: 1.4rem;
}

.author-avatar img {
  width: 100%;
  max-width: 220px;
  border-radius: 0;
  box-shadow: none;
}

.author-discrip,
.author-links {
  display: block;
  padding: 0;
}

.author-discrip h3 {
  margin: 0;
  font-size: 3.2rem;
  font-weight: 600;
  color: var(--text);
}

.author-discrip .author-bio {
  margin: 0.7rem 0 0;
  font-size: 1.55rem;
  line-height: 1.7;
  color: var(--text-soft);
}

.m-social-links {
  display: none;
}

.social-icons,
.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1rem;
  margin: 1.2rem 0 0;
  padding: 0;
  list-style: none;
}

.social-icons li,
.social-links li {
  margin: 0;
}

.social-icon,
.e-social-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--accent);
  text-decoration: none;
  font-size: 1.45rem;
}

.social-icon:hover,
.e-social-link:hover {
  color: var(--accent-hover);
  transform: none;
}

.page {
  width: 78%;
  float: right;
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.page article {
  padding: 0 0 2rem;
}

.page article a {
  color: var(--accent);
  text-decoration: none;
}

.page article a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

.intro-head {
  margin-bottom: 2.8rem;
}

.role-line {
  margin: 0 0 0.6rem;
  color: #555;
  font-size: 1.8rem;
}

.intro-head h1 {
  margin: 0;
  color: #111;
  font-size: 5rem;
  line-height: 1.1;
}

.intro-note {
  margin: 1rem 0 0;
  font-size: 1.9rem;
  line-height: 1.7;
}

.quick-links {
  margin: 1rem 0 0;
  font-size: 1.7rem;
}

.quick-links a {
  margin-right: 1rem;
}

.content-section {
  margin-top: 3.2rem;
}

.content-section-last {
  padding-bottom: 0.5rem;
}

.content-section h2 {
  margin: 0 0 1rem;
  color: #111;
  font-size: 2.8rem;
  font-weight: 600;
}

.content-section p {
  margin: 0.8rem 0;
  font-size: 1.75rem;
  line-height: 1.8;
}

.news-toggle {
  margin: 0.4rem 0 1rem;
  font-size: 1.5rem;
  color: #666;
}

.news-list {
  margin: 0;
  padding-left: 1.8rem;
}

.news-list li {
  margin: 0.8rem 0;
  font-size: 1.65rem;
  line-height: 1.7;
}

.news-list span {
  color: #222;
  font-weight: 600;
}

.publication-item {
  margin: 1.6rem 0 2rem;
}

.publication-item h3 {
  margin: 0 0 0.45rem;
  font-size: 2rem;
  line-height: 1.5;
  color: #111;
  font-weight: 600;
}

.publication-item p {
  margin: 0.2rem 0;
  font-size: 1.65rem;
}

.authors strong {
  color: #111;
}

#page_footer {
  padding: 1rem 0 2.4rem;
}

.footer_wrap {
  color: #777;
}

@media (max-width: 1100px) {
  .side-card {
    width: 25%;
    margin-right: 0;
  }

  .page {
    width: 73%;
  }
}

@media (max-width: 900px) {
  .side-card,
  .page {
    width: 100%;
    float: none;
  }

  .side-card .card-wrap {
    padding-right: 0;
    margin-bottom: 2rem;
  }

  .author-avatar img {
    max-width: 180px;
  }
}

@media (max-width: 540px) {
  #page_main {
    margin-top: 2rem;
  }

  .header_wrap {
    padding-left: 1.6rem;
    padding-right: 1.6rem;
  }

  .intro-head h1 {
    font-size: 3.8rem;
  }

  .role-line,
  .intro-note,
  .quick-links,
  .content-section p,
  .news-list li,
  .publication-item p {
    font-size: 1.55rem;
  }
}