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   代码小窝 Code Nest - hyuhyu.top
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:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #eff6ff;
  --accent: #7c3aed;
  --text: #1f2937;
  --text-secondary: #6b7280;
  --border: #e5e7eb;
  --bg: #f9fafb;
  --card-bg: #ffffff;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 4px 14px rgba(0, 0, 0, 0.05);
  --shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.08), 0 8px 24px rgba(0, 0, 0, 0.08);
  --max-width: 1080px;
  --header-height: 64px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--primary-dark); }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.site-header .container {
  height: 100%; display: flex; align-items: center; justify-content: space-between;
}
.logo { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; color: var(--text); }
.logo .logo-icon {
  width: 36px; height: 36px; border-radius: 10px; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--accent)); color: #fff; font-size: 18px;
}
.logo span em { font-style: normal; color: var(--primary); }
.nav { display: flex; gap: 4px; }
.nav a {
  padding: 8px 14px; border-radius: 8px; color: var(--text-secondary); font-size: 14.5px; font-weight: 500;
}
.nav a:hover { color: var(--primary); background: var(--primary-light); }
.nav a.active { color: var(--primary); background: var(--primary-light); }
.nav-toggle { display: none; background: none; border: none; font-size: 22px; cursor: pointer; color: var(--text); }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(135deg, #eff6ff 0%, #f5f3ff 50%, #fdf4ff 100%);
  border-bottom: 1px solid var(--border);
  padding: 64px 0 56px;
  text-align: center;
}
.hero h1 { font-size: 38px; font-weight: 800; letter-spacing: -0.5px; margin-bottom: 14px; }
.hero h1 .grad {
  background: linear-gradient(90deg, var(--primary), var(--accent));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero p { color: var(--text-secondary); font-size: 17px; max-width: 620px; margin: 0 auto; }

/* ---------- 区块标题 ---------- */
.section { padding: 44px 0; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 22px; }
.section-head h2 { font-size: 22px; font-weight: 700; }
.section-head .more { font-size: 14px; color: var(--text-secondary); }

/* ---------- 分类胶囊 ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: 999px; background: var(--card-bg);
  border: 1px solid var(--border); font-size: 14px; font-weight: 500; color: var(--text-secondary);
  transition: all .2s;
}
.chip:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-1px); box-shadow: var(--shadow); }
.chip .count { font-size: 12px; color: var(--text-secondary); background: var(--bg); border-radius: 999px; padding: 1px 8px; }

/* ---------- 文章卡片 ---------- */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.card {
  background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px; display: flex; flex-direction: column; gap: 10px;
  transition: all .25s; position: relative;
}
.card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); border-color: #d1d5db; }
.card .cat {
  display: inline-block; font-size: 12px; font-weight: 600; color: var(--primary);
  background: var(--primary-light); padding: 3px 10px; border-radius: 999px; align-self: flex-start;
}
.card h3 { font-size: 16.5px; line-height: 1.5; font-weight: 600; }
.card h3 a { color: var(--text); }
.card h3 a:hover { color: var(--primary); }
.card .excerpt { font-size: 13.5px; color: var(--text-secondary); flex: 1; }
.card .meta { display: flex; align-items: center; gap: 12px; font-size: 12.5px; color: var(--text-secondary); border-top: 1px dashed var(--border); padding-top: 12px; }
.card .tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag { font-size: 11.5px; color: var(--text-secondary); background: var(--bg); border: 1px solid var(--border); padding: 2px 8px; border-radius: 6px; }

/* ---------- 列表页 ---------- */
.page-head { padding: 40px 0 8px; }
.page-head h1 { font-size: 28px; font-weight: 800; }
.page-head .sub { color: var(--text-secondary); margin-top: 6px; }
.toolbar { display: flex; align-items: center; gap: 14px; margin: 26px 0 22px; flex-wrap: wrap; }
.search-box { flex: 1; min-width: 240px; position: relative; }
.search-box input {
  width: 100%; padding: 10px 16px 10px 40px; border: 1px solid var(--border); border-radius: 10px;
  font-size: 14px; outline: none; transition: border .2s; background: var(--card-bg);
}
.search-box input:focus { border-color: var(--primary); }
.search-box .icon { position: absolute; left: 13px; top: 50%; transform: translateY(-50%); color: var(--text-secondary); font-size: 15px; }
.filter-chips { display: flex; gap: 8px; flex-wrap: wrap; }
.filter-chips button {
  padding: 7px 14px; border-radius: 999px; border: 1px solid var(--border); background: var(--card-bg);
  font-size: 13px; color: var(--text-secondary); cursor: pointer; transition: all .2s;
}
.filter-chips button.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.list-item {
  background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px 22px; display: flex; gap: 18px; align-items: flex-start; margin-bottom: 14px; transition: all .2s;
}
.list-item:hover { box-shadow: var(--shadow); border-color: #d1d5db; }
.list-item .thumb {
  width: 88px; height: 64px; border-radius: 10px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: 26px;
  background: linear-gradient(135deg, var(--primary-light), #f5f3ff);
}
.list-item .body h3 { font-size: 16px; font-weight: 600; margin-bottom: 5px; }
.list-item .body h3 a { color: var(--text); }
.list-item .body h3 a:hover { color: var(--primary); }
.list-item .body .excerpt { font-size: 13.5px; color: var(--text-secondary); margin-bottom: 8px; }
.list-item .body .meta { font-size: 12.5px; color: var(--text-secondary); display: flex; gap: 14px; flex-wrap: wrap; }
.empty { text-align: center; color: var(--text-secondary); padding: 60px 0; }

/* ---------- 文章详情 ---------- */
.article-wrap { max-width: 780px; margin: 0 auto; padding: 44px 20px; }
.article-header { margin-bottom: 30px; }
.article-header .cat { color: var(--primary); font-weight: 600; font-size: 13.5px; }
.article-header h1 { font-size: 30px; line-height: 1.4; font-weight: 800; margin: 10px 0 14px; }
.article-header .meta { display: flex; gap: 16px; color: var(--text-secondary); font-size: 13.5px; flex-wrap: wrap; }
.article-body {
  background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 34px 38px; font-size: 15.5px; line-height: 1.9;
}
.article-body h2 { font-size: 21px; margin: 30px 0 14px; padding-bottom: 8px; border-bottom: 1px solid var(--border); }
.article-body h3 { font-size: 17px; margin: 22px 0 10px; }
.article-body p { margin-bottom: 14px; color: #374151; }
.article-body ul, .article-body ol { margin: 0 0 16px 22px; color: #374151; }
.article-body li { margin-bottom: 6px; }
.article-body code {
  background: var(--bg); border: 1px solid var(--border); border-radius: 5px;
  padding: 2px 6px; font-size: 13.5px; font-family: "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace; color: #be185d;
}
.article-body pre {
  background: #1e293b; color: #e2e8f0; border-radius: 10px; padding: 18px 20px;
  overflow-x: auto; margin: 16px 0; font-size: 13.5px; line-height: 1.7;
}
.article-body pre code { background: none; border: none; padding: 0; color: inherit; font-size: inherit; }
.article-body blockquote {
  border-left: 4px solid var(--primary); background: var(--primary-light);
  padding: 12px 18px; border-radius: 0 8px 8px 0; margin: 16px 0; color: #374151;
}
.article-body .callout {
  background: #fffbeb; border: 1px solid #fde68a; border-radius: 10px; padding: 14px 18px; margin: 18px 0; font-size: 14px;
}
.article-tags { margin-top: 26px; display: flex; gap: 8px; flex-wrap: wrap; }
.article-nav { display: flex; justify-content: space-between; gap: 16px; margin-top: 26px; }
.article-nav a {
  flex: 1; background: var(--card-bg); border: 1px solid var(--border); border-radius: 10px;
  padding: 12px 16px; font-size: 13.5px; color: var(--text-secondary);
}
.article-nav a span { display: block; font-size: 12px; margin-bottom: 2px; }
.article-nav a strong { color: var(--text); font-weight: 600; font-size: 14px; }
.article-nav a:hover { border-color: var(--primary); }
.related h2 { font-size: 20px; margin-bottom: 18px; }

/* ---------- 通用页面（关于/联系/隐私） ---------- */
.page-wrap { max-width: 800px; margin: 0 auto; padding: 44px 20px 60px; }
.page-wrap h1 { font-size: 28px; font-weight: 800; margin-bottom: 6px; }
.page-wrap .sub { color: var(--text-secondary); margin-bottom: 30px; }
.content-card {
  background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 30px 34px; margin-bottom: 20px;
}
.content-card h2 { font-size: 19px; margin-bottom: 14px; padding-bottom: 10px; border-bottom: 1px solid var(--border); }
.content-card p { color: #374151; margin-bottom: 12px; }
.content-card ul, .content-card ol { margin: 0 0 14px 20px; color: #374151; }
.content-card li { margin-bottom: 6px; }
.info-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.info-item { background: var(--bg); border: 1px solid var(--border); border-radius: 10px; padding: 16px 18px; }
.info-item .k { font-size: 12.5px; color: var(--text-secondary); margin-bottom: 4px; }
.info-item .v { font-size: 15px; font-weight: 600; }
.link-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }
.link-item {
  display: flex; align-items: center; gap: 12px; background: var(--card-bg);
  border: 1px solid var(--border); border-radius: 10px; padding: 14px 16px; transition: all .2s;
}
.link-item:hover { border-color: var(--primary); box-shadow: var(--shadow); }
.link-item .fav { width: 38px; height: 38px; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 18px; background: var(--primary-light); }
.link-item .name { font-weight: 600; font-size: 14.5px; color: var(--text); }
.link-item .desc { font-size: 12px; color: var(--text-secondary); }

/* ---------- 页脚 ---------- */
.site-footer { border-top: 1px solid var(--border); background: #fff; padding: 34px 0 26px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 28px; margin-bottom: 26px; }
.footer-grid h4 { font-size: 14px; margin-bottom: 12px; }
.footer-grid ul { list-style: none; }
.footer-grid ul li { margin-bottom: 7px; }
.footer-grid ul a { color: var(--text-secondary); font-size: 13.5px; }
.footer-grid ul a:hover { color: var(--primary); }
.footer-grid .intro { color: var(--text-secondary); font-size: 13.5px; }
.footer-bottom {
  border-top: 1px solid var(--border); padding-top: 18px; text-align: center;
  color: var(--text-secondary); font-size: 13px; line-height: 2;
}
.footer-bottom a { color: var(--text-secondary); }
.footer-bottom a:hover { color: var(--primary); }

/* ---------- 响应式 ---------- */
@media (max-width: 860px) {
  .nav { display: none; position: absolute; top: var(--header-height); left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--border); flex-direction: column; padding: 10px 20px 16px; }
  .nav.open { display: flex; }
  .nav a { padding: 10px 8px; }
  .nav-toggle { display: block; }
  .hero h1 { font-size: 30px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .info-grid { grid-template-columns: 1fr; }
  .article-body { padding: 24px 20px; }
  .list-item .thumb { display: none; }
}

@media (max-width: 520px) {
  .hero { padding: 44px 0 40px; }
  .hero h1 { font-size: 25px; }
  .footer-grid { grid-template-columns: 1fr; }
  .section-head { flex-direction: column; gap: 6px; }
}