:root {
  --page: #f7f7f5;
  --card: #ffffff;
  --ink: #213d3d;
  --heading: #151b1b;
  --muted: #6b7d7b;
  --link: #1649d8;
  --line: #e8ecea;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--page);
}

body {
  background: var(--page);
  color: var(--ink);
  font-family: Arial, Helvetica, "PingFang SC", "Microsoft YaHei", sans-serif;
  margin: 0;
}

a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 2px;
}

a:hover {
  color: #0d2f9a;
}

.academic-page {
  margin: 0 auto;
  max-width: 760px;
  padding: 28px 18px 52px;
}

.profile-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 11px;
  box-shadow: 0 2px 9px rgba(20, 45, 43, 0.07);
  margin-bottom: 12px;
  padding: 24px 22px;
}

.intro-card {
  padding-bottom: 28px;
  padding-top: 30px;
  text-align: center;
}

.site-kicker {
  color: var(--muted);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.17em;
  margin: 0 0 12px;
}

h1 {
  color: var(--heading);
  font-size: clamp(22px, 4vw, 30px);
  letter-spacing: -0.025em;
  line-height: 1.25;
  margin: 0;
}

.headline-subtitle {
  font-size: 17px;
  font-weight: 700;
  margin: 14px 0 0;
}

h2 {
  color: var(--ink);
  font-size: 17px;
  margin: 0 0 15px;
}

ul {
  margin: 0;
  padding-left: 19px;
}

li {
  font-size: 14px;
  line-height: 1.48;
  margin: 3px 0;
}

.paper-section {
  padding-bottom: 27px;
  padding-top: 27px;
}

.paper-list li {
  margin-bottom: 13px;
}

.paper-list li:last-child {
  margin-bottom: 0;
}

.paper-title,
.paper-authors,
.paper-meta {
  display: block;
}

.paper-title {
  color: var(--heading);
  font-weight: 650;
}

a.paper-title {
  text-decoration-color: #b8c4c2;
  text-decoration-thickness: 1px;
}

a.paper-title:hover {
  color: var(--link);
}

.paper-authors {
  margin-top: 2px;
}

.paper-meta {
  color: var(--muted);
  font-size: 13px;
}

.paper-abstract {
  color: var(--ink);
  font-size: 13px;
  line-height: 1.6;
  margin: 10px 0 0;
  max-width: 68ch;
}

.paper-abstract-details {
  border-top: 0;
  margin-top: 10px;
  padding-top: 0;
}

.paper-abstract-details summary {
  display: list-item;
  font-size: 13px;
  width: max-content;
}

.empty-state {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
  margin: 0;
}

.page-footer {
  color: var(--muted);
  display: flex;
  font-size: 11px;
  justify-content: space-between;
  padding: 13px 4px 0;
}

.page-footer nav {
  display: flex;
  gap: 6px;
}

.article-page {
  max-width: 820px;
}

.article-header {
  padding-bottom: 28px;
  padding-top: 28px;
}

.article-header h1 {
  font-size: clamp(25px, 5vw, 36px);
  line-height: 1.17;
  max-width: 22ch;
}

.article-byline {
  color: var(--heading);
  font-size: 16px;
  font-weight: 700;
  margin: 18px 0 5px;
}

.article-meta {
  color: var(--muted);
  font-size: 13px;
  margin: 0;
}

.article-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 20px;
}

.article-actions a {
  border: 1px solid #ccd6d4;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 700;
  padding: 8px 11px;
  text-decoration: none;
}

.article-actions a:hover {
  background: #f1f4f3;
}

.article-card h2 {
  margin-bottom: 11px;
}

.article-card p {
  font-size: 15px;
  line-height: 1.72;
  margin: 0;
  max-width: 72ch;
}

.topic-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  list-style: none;
  padding: 0;
}

.topic-list li {
  background: #f0f3f2;
  border-radius: 999px;
  color: var(--ink);
  font-size: 12px;
  margin: 0;
  padding: 5px 9px;
}

.article-note {
  color: var(--muted);
  font-size: 12px;
  margin-top: 15px;
}

.management-header p:last-child,
.management-step p {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.management-header .site-kicker {
  margin-top: 22px;
}

.back-link {
  font-size: 12px;
}

.management-step {
  display: grid;
  gap: 18px;
  grid-template-columns: 42px minmax(0, 1fr);
}

.management-step h2 {
  margin-bottom: 7px;
}

.management-step p {
  margin: 0 0 12px;
}

.step-number {
  color: #9aaaa7;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding-top: 3px;
}

.action-link {
  font-size: 13px;
  font-weight: 700;
}

code {
  background: #f0f3f2;
  border-radius: 4px;
  color: var(--heading);
  padding: 2px 5px;
}

details {
  border-top: 1px solid var(--line);
  margin-top: 18px;
  padding-top: 13px;
}

summary {
  color: var(--link);
  cursor: pointer;
  font-size: 12px;
  font-weight: 700;
}

pre {
  background: #f4f6f5;
  border: 1px solid var(--line);
  border-radius: 7px;
  font-size: 12px;
  line-height: 1.55;
  margin: 12px 0 0;
  overflow-x: auto;
  padding: 13px;
}

pre code {
  background: transparent;
  padding: 0;
}

:focus-visible {
  outline: 3px solid rgba(22, 73, 216, 0.25);
  outline-offset: 3px;
}

@media (max-width: 560px) {
  .academic-page {
    padding: 12px 9px 35px;
  }

  .profile-card {
    border-radius: 8px;
    padding: 21px 16px;
  }

  .intro-card {
    padding-bottom: 24px;
    padding-top: 25px;
  }

  li {
    font-size: 13px;
  }

  .page-footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 7px;
  }

  .management-step {
    gap: 10px;
    grid-template-columns: 1fr;
  }
}