/* ============ 主题样式：页头 / 页脚 / 栏目与文章页 ============ */
:root {
  --cygfw-blue: #2563eb;
  --cygfw-blue-dark: #1d4ed8;
  --cygfw-ink: #0f172a;
  --cygfw-gray: #64748b;
  --cygfw-line: #e2e8f0;
  --cygfw-bg: #f6f8fc;
  --cygfw-card: #ffffff;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  color: var(--cygfw-ink);
  background: var(--cygfw-bg);
  line-height: 1.7;
}
body.admin-bar { padding-top: 0; }
img { max-width: 100%; height: auto; }
a { color: var(--cygfw-blue); }
.screen-reader-text { display: none; }

/* ---------- 页头 ---------- */
.cygfw-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(255, 255, 255, .96);
  border-bottom: 1px solid var(--cygfw-line);
  backdrop-filter: blur(8px);
}
.cygfw-header-inner {
  display: flex;
  align-items: center;
  gap: 22px;
  min-height: 66px;
  padding-top: 8px;
  padding-bottom: 8px;
}
.cygfw-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--cygfw-ink);
  min-width: 0;
}
.cygfw-brand:hover { text-decoration: none; color: var(--cygfw-ink); }
.cygfw-brand-logo { font-size: 24px; line-height: 1; }
.cygfw-brand-logo img { width: 38px; height: 38px; border-radius: 10px; display: block; }
.cygfw-brand-name {
  font-size: 19px;
  font-weight: 800;
  white-space: nowrap;
}
.cygfw-brand-desc {
  font-size: 12px;
  color: var(--cygfw-gray);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 300px;
}
.cygfw-main-nav {
  margin-left: auto;
}
.cygfw-main-nav ul {
  display: flex;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.cygfw-main-nav a {
  display: block;
  padding: 9px 13px;
  border-radius: 9px;
  font-size: 14px;
  font-weight: 600;
  color: var(--cygfw-ink);
  text-decoration: none;
  transition: background .18s, color .18s;
}
.cygfw-main-nav a:hover {
  background: #eef4ff;
  color: var(--cygfw-blue);
  text-decoration: none;
}
.cygfw-nav-toggle {
  display: none;
  margin-left: auto;
  border: 1px solid var(--cygfw-line);
  background: #fff;
  border-radius: 9px;
  width: 40px;
  height: 40px;
  font-size: 18px;
  cursor: pointer;
}

/* ---------- 页脚 ---------- */
.cygfw-footer {
  background: #0f172a;
  color: #cbd5e1;
  margin-top: 20px;
}
.cygfw-footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 30px;
  padding: 44px 0 30px;
}
.cygfw-footer-col strong {
  display: block;
  color: #fff;
  font-size: 15px;
  margin-bottom: 12px;
}
.cygfw-footer-col p {
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
  color: #94a3b8;
}
.cygfw-footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.cygfw-footer-col li {
  margin-bottom: 8px;
}
.cygfw-footer-col a {
  color: #cbd5e1;
  font-size: 13px;
  text-decoration: none;
}
.cygfw-footer-col a:hover {
  color: #fff;
  text-decoration: underline;
}
.cygfw-footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08);
  padding: 16px 0;
}
.cygfw-footer-bottom p {
  margin: 0;
  font-size: 12px;
  color: #64748b;
  text-align: center;
}

/* ---------- 栏目归档页 ---------- */
.cygfw-archive-wrap {
  padding: 38px 0 56px;
}
.cygfw-archive-title {
  margin: 0 0 14px;
  font-size: 30px;
  font-weight: 800;
}
.cygfw-archive-desc {
  margin: 0 0 26px;
  color: var(--cygfw-gray);
  font-size: 15px;
  max-width: 820px;
}
.cygfw-archive-desc p { margin: 0 0 8px; }
.cygfw-pagination {
  margin-top: 30px;
  text-align: center;
}
.cygfw-pagination .nav-links {
  display: inline-flex;
  gap: 8px;
  flex-wrap: wrap;
}
.cygfw-pagination .page-numbers {
  display: inline-block;
  padding: 8px 14px;
  border-radius: 9px;
  background: #fff;
  border: 1px solid var(--cygfw-line);
  color: var(--cygfw-ink);
  text-decoration: none;
  font-size: 14px;
}
.cygfw-pagination .page-numbers.current {
  background: var(--cygfw-blue);
  border-color: var(--cygfw-blue);
  color: #fff;
}
.cygfw-empty {
  padding: 40px;
  text-align: center;
  color: var(--cygfw-gray);
  background: #fff;
  border-radius: 14px;
  border: 1px solid var(--cygfw-line);
}

/* ---------- 单篇文章 ---------- */
.cygfw-single-wrap {
  max-width: 860px;
  padding: 34px 0 56px;
}
.cygfw-single-card {
  background: var(--cygfw-card);
  border: 1px solid var(--cygfw-line);
  border-radius: 16px;
  padding: 30px 34px 40px;
}
.cygfw-single-title {
  margin: 0 0 12px;
  font-size: 30px;
  font-weight: 800;
  line-height: 1.35;
}
.cygfw-single-meta {
  display: flex;
  gap: 14px;
  color: var(--cygfw-gray);
  font-size: 13px;
  margin-bottom: 18px;
}
.cygfw-single-thumb {
  margin-bottom: 22px;
}
.cygfw-single-thumb img {
  width: 100%;
  border-radius: 12px;
}
.cygfw-single-content {
  font-size: 16px;
  line-height: 1.9;
}
.cygfw-single-content h2 {
  margin: 30px 0 14px;
  font-size: 23px;
  font-weight: 800;
}
.cygfw-single-content h3 {
  margin: 26px 0 12px;
  font-size: 19px;
  font-weight: 700;
}
.cygfw-single-content p {
  margin: 0 0 16px;
}
.cygfw-single-content img {
  border-radius: 12px;
  margin: 8px 0;
}

/* ---------- 普通页面 ---------- */
.cygfw-page-wrap {
  max-width: 860px;
  padding: 38px 0 56px;
}
.cygfw-page-card {
  background: var(--cygfw-card);
  border: 1px solid var(--cygfw-line);
  border-radius: 16px;
  padding: 34px 38px;
}
.cygfw-page-title {
  margin: 0 0 18px;
  font-size: 30px;
  font-weight: 800;
}
.cygfw-page-content {
  font-size: 16px;
  line-height: 1.9;
}
.cygfw-page-content h2 {
  margin: 26px 0 12px;
  font-size: 22px;
  font-weight: 800;
}
.cygfw-page-content h3 {
  margin: 22px 0 10px;
  font-size: 18px;
  font-weight: 700;
}
.cygfw-page-content p {
  margin: 0 0 14px;
}

/* ---------- 404 ---------- */
.cygfw-404 {
  text-align: center;
  padding: 60px 40px;
}
.cygfw-404 h1 { margin: 0 0 12px; }
.cygfw-404 p { color: var(--cygfw-gray); margin: 0 0 22px; }
.cygfw-404-search {
  display: flex;
  max-width: 420px;
  margin: 0 auto;
  border: 1px solid var(--cygfw-line);
  border-radius: 999px;
  background: #fff;
  overflow: hidden;
}
.cygfw-404-search input {
  flex: 1;
  min-width: 0;
  border: 0;
  outline: none;
  padding: 11px 16px;
  font-size: 14px;
}
.cygfw-404-search button {
  border: 0;
  background: var(--cygfw-blue);
  color: #fff;
  padding: 0 20px;
  cursor: pointer;
}

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .cygfw-brand-desc { display: none; }
  .cygfw-main-nav {
    display: none;
    position: absolute;
    left: 4%;
    right: 4%;
    top: 66px;
    background: #fff;
    border: 1px solid var(--cygfw-line);
    border-radius: 14px;
    box-shadow: 0 18px 40px rgba(15, 23, 42, .14);
    padding: 12px;
  }
  .cygfw-main-nav.cygfw-nav-open { display: block; }
  .cygfw-main-nav ul { flex-direction: column; gap: 2px; }
  .cygfw-nav-toggle { display: block; }
  .cygfw-footer-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .cygfw-brand-name { font-size: 17px; }
  .cygfw-single-card, .cygfw-page-card { padding: 22px 18px; }
  .cygfw-single-title, .cygfw-page-title { font-size: 24px; }
  .cygfw-footer-inner { grid-template-columns: 1fr; }
}