:root {
  --text: #222;
  --text-secondary: #555;
  --text-muted: #888;
  --border: #ddd;
  --bg: #fff;
  --bg-hover: #f5f5f5;
  --accent: #2c5282;
  --accent-hover: #1a365d;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  color: var(--text);
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  line-height: 1.7;
}

a {
  color: var(--accent);
  text-decoration: underline;
}

a:hover {
  color: var(--accent-hover);
}

.site-wrapper {
  max-width: 680px;
  margin: 0 auto;
  padding: 44px 24px 0;
}

.intro {
  padding: 40px 0 32px;
  border-bottom: 1px solid var(--border);
}

.intro-content {
  display: flex;
  align-items: flex-start;
  gap: 24px;
}

.intro-avatar {
  width: 110px;
  height: 110px;
  border: 1px solid var(--border);
  border-radius: 50%;
  flex-shrink: 0;
  object-fit: cover;
}

.intro-text h1 {
  margin-bottom: 6px;
  color: var(--text);
  font-size: 20px;
  font-weight: 600;
}

.intro-text p {
  margin-bottom: 12px;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
}

.blank {
  color: var(--text-muted);
}

.intro-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.intro-links a {
  display: inline-flex;
  width: 18px;
  height: 18px;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  text-decoration: none;
}

.intro-links a:hover {
  color: var(--text);
}

.intro-links svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.section {
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
}

.section:last-of-type {
  border-bottom: none;
}

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 16px;
}

.section-header h2 {
  color: var(--text);
  font-size: 15px;
  font-weight: 600;
}

.header-note {
  margin-left: 8px;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 400;
}

.research-flow,
.post-list {
  display: flex;
  flex-direction: column;
}

.flow-card {
  position: relative;
  padding-left: 12px;
}

.flow-card::before {
  position: absolute;
  top: 4px;
  left: 0;
  width: 6px;
  height: 14px;
  border-radius: 1px;
  background: #93c5fd;
  content: "";
}

.flow-title {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  margin-bottom: 4px;
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.5;
}

.flow-title-text {
  display: block;
}

.flow-venue {
  display: inline-block;
  color: var(--text-muted);
  font-family: Georgia, "Times New Roman", Times, serif;
  font-size: 14px;
  font-weight: 400;
}

.flow-authors {
  margin-bottom: 5px;
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.5;
}

.flow-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.flow-links a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--text-secondary);
  font-size: 12px;
  text-decoration: none;
}

.flow-links a:hover {
  color: var(--text);
}

.flow-links svg {
  width: 13px;
  height: 13px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.flow-links .star-icon {
  width: 11px;
  height: 11px;
  fill: currentColor;
  stroke: none;
}

.post-item {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 4px 0;
  color: var(--text);
}

.post-date {
  width: 72px;
  color: var(--text-muted);
  flex-shrink: 0;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.post-title {
  flex: 1;
  font-size: 14px;
  line-height: 1.5;
}

footer {
  padding: 28px 0;
  text-align: center;
}

footer p {
  color: var(--text-muted);
  font-size: 13px;
}

@media (max-width: 640px) {
  .site-wrapper {
    padding: 28px 16px 0;
  }

  .intro {
    padding: 28px 0;
  }

  .intro-content {
    flex-direction: column;
    gap: 14px;
  }

  .intro-avatar {
    width: 60px;
    height: 60px;
  }

  .post-item {
    flex-wrap: wrap;
    gap: 4px 12px;
  }

  .post-date {
    width: auto;
  }
}