:root {
  --text: #222;
  --muted: #6b7280;
  --link: #1f5f8b;
  --border: #e5e7eb;
  --surface: #ffffff;
  --subtle: #f8fafc;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--surface);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

a {
  color: var(--link);
  text-decoration: none;
}

a:hover,
a:focus {
  text-decoration: underline;
}

.masthead {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.masthead__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1180px, 100%);
  margin: 0 auto;
  padding: 18px 28px;
}

.site-title {
  color: var(--text);
  font-size: 1.1rem;
  font-weight: 700;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  color: var(--muted);
  font-size: 0.95rem;
}

.site-nav a {
  color: var(--muted);
  font-weight: 600;
}

.page-shell {
  display: grid;
  grid-template-columns: 250px minmax(0, 760px);
  gap: 48px;
  width: min(1180px, 100%);
  margin: 0 auto;
  padding: 42px 28px 64px;
}

.author-profile {
  color: var(--muted);
  font-size: 0.94rem;
}

.author-avatar {
  display: block;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  border: 1px solid var(--border);
  object-fit: cover;
}

.author-profile h2 {
  margin: 18px 0 6px;
  color: var(--text);
  font-size: 1.3rem;
  line-height: 1.2;
}

.author-bio {
  margin: 0 0 16px;
}

.author-links {
  display: grid;
  gap: 7px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.page-content {
  min-width: 0;
}

.page-header {
  margin-bottom: 28px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

h1,
h2,
h3 {
  color: var(--text);
  line-height: 1.25;
}

h1 {
  margin: 0;
  font-size: 2rem;
}

h2 {
  margin-top: 2rem;
  font-size: 1.45rem;
}

h3 {
  margin-bottom: 0.2rem;
  font-size: 1.1rem;
}

p {
  margin-top: 0;
}

.archive-list {
  display: grid;
  gap: 22px;
}

.archive-item {
  padding-bottom: 22px;
  border-bottom: 1px solid var(--border);
}

.archive-item h2 {
  margin: 0 0 4px;
  font-size: 1.15rem;
}

.item-meta,
.archive-meta {
  color: var(--muted);
  font-size: 0.92rem;
}

.compact-list {
  padding-left: 1.2rem;
}

.compact-list li {
  margin-bottom: 0.45rem;
}

.notice {
  padding: 16px 18px;
  border-left: 4px solid var(--link);
  background: var(--subtle);
}

.page-footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

.page-footer p {
  width: min(1180px, 100%);
  margin: 0 auto;
  padding: 24px 28px;
}

@media (max-width: 860px) {
  .masthead__inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .page-shell {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-top: 30px;
  }

  .author-profile {
    display: grid;
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 14px 18px;
    align-items: start;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border);
  }

  .author-avatar {
    width: 92px;
    height: 92px;
    grid-row: span 3;
  }

  .author-profile h2 {
    margin-top: 0;
  }

  .author-links {
    grid-column: 2;
  }
}

@media (max-width: 520px) {
  .masthead__inner,
  .page-shell,
  .page-footer p {
    padding-left: 20px;
    padding-right: 20px;
  }

  .site-nav {
    gap: 12px;
    font-size: 0.9rem;
  }

  h1 {
    font-size: 1.65rem;
  }
}