/* 云墨 theme — 现代杂志风 */
:root {
  --accent: #1f3a5f;
  --bg: #faf9f7;
  --bg-card: #ffffff;
  --text: #26262b;
  --text-heading: #1c1c21;
  --text-2: #6b6b74;
  --text-3: #9a9aa2;
  --border: #e8e6e1;
  --shadow: 0 2px 12px rgba(31, 58, 95, .07);
  --shadow-hover: 0 10px 28px rgba(31, 58, 95, .13);
  --radius: 14px;
  --font-size: 16px;
  --container-w: 1080px;
  --article-w: 820px;
  --page-pad: 24px;
  --serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --mono: "JetBrains Mono", "Cascadia Code", Consolas, "Courier New", monospace;
  --font-serif: var(--serif);
  --font-sans: var(--sans);
  --font-mono: var(--mono);
  --code-bg: #f6f5f0;
  --code-fg: #2c2c31;
  --code-border: var(--border);
  --code-keyword: #b5561c;
  --code-string: #3f7a44;
  --code-comment: #9a938a;
  --code-number: #a05a2c;
  --code-title: #7c5cbf;
  --code-type: #b0413e;
  --code-builtin: #2c5f8a;
  --code-meta: #8c8c8c;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17181c;
    --bg-card: #212228;
    --text: #e8e8ea;
    --text-heading: #f2f2f4;
    --text-2: #a6a6ae;
    --text-3: #6f6f78;
    --border: #2e2f36;
    --shadow: 0 2px 12px rgba(0, 0, 0, .35);
    --shadow-hover: 0 10px 28px rgba(0, 0, 0, .5);
  }
  .article-content pre {
    --code-bg: #22262e;
    --code-fg: #e6e6e6;
    --code-border: #33383f;
    --code-keyword: #e8a76d;
    --code-string: #98c379;
    --code-comment: #7f8794;
    --code-number: #d19a66;
    --code-title: #c69be0;
    --code-type: #e06c75;
    --code-builtin: #61afef;
    --code-meta: #7f8794;
  }
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body, var(--sans));
  font-size: var(--font-size);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container { max-width: var(--container-w); margin: 0 auto; padding: 0 var(--page-pad); }
.container.narrow { max-width: min(780px, var(--container-w)); }

/* ===== 头部导航 ===== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: var(--container-w); margin: 0 auto; padding: 0 var(--page-pad);
  height: 60px; display: flex; align-items: center; justify-content: space-between;
}

.brand {
  font-family: var(--serif);
  font-size: 1.35rem; font-weight: 700;
  letter-spacing: .04em;
  color: var(--accent);
}
.brand-logo {
  height: 36px; width: 36px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.main-nav { display: flex; gap: 4px; }
.nav-item { position: relative; }

.nav-link {
  display: inline-block; padding: 8px 14px; border-radius: 8px;
  font-size: .95rem; color: var(--text-2);
  transition: color .2s, background .2s;
}
.nav-link:hover { color: var(--accent); background: color-mix(in srgb, var(--accent) 8%, transparent); }

.nav-sub {
  position: absolute; top: 100%; left: 0; min-width: 140px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 10px; padding: 6px; box-shadow: var(--shadow);
  opacity: 0; visibility: hidden; transform: translateY(6px);
  transition: all .2s;
}
.nav-item:hover .nav-sub { opacity: 1; visibility: visible; transform: translateY(0); }
.nav-sub-link {
  display: block; padding: 8px 12px; border-radius: 6px;
  font-size: .9rem; color: var(--text-2); white-space: nowrap;
}
.nav-sub-link:hover { color: var(--accent); background: color-mix(in srgb, var(--accent) 8%, transparent); }

.nav-toggle {
  display: none; background: none; border: none;
  font-size: 1.4rem; color: var(--text); cursor: pointer;
}

/* ===== Hero ===== */
.hero {
  padding: 72px 0 48px;
  text-align: center;
}
.hero-title {
  font-family: var(--serif);
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 800;
  letter-spacing: .06em;
  color: var(--accent);
}
.hero-title + .hero-subtitle { margin-top: 14px; }
.hero-subtitle {
  font-size: 1.08rem; color: var(--text-2);
  letter-spacing: .12em;
}
.hero::after {
  content: "";
  display: block; width: 56px; height: 3px;
  margin: 28px auto 0;
  background: var(--accent);
  border-radius: 2px;
}

/* ===== 页面标题 ===== */
.page-title {
  font-family: var(--serif);
  font-size: 1.9rem; font-weight: 700;
  padding-top: 48px;
}
.page-desc { color: var(--text-2); margin: 8px 0 28px; }

/* ===== 文章卡片 ===== */
.post-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  padding-bottom: 40px;
}

.post-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform .25s, box-shadow .25s;
}
.post-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }

.card-cover { display: block; aspect-ratio: 16 / 9; overflow: hidden; }
.card-cover img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .4s;
}
.post-card:hover .card-cover img { transform: scale(1.05); }

.card-body { padding: 18px 20px 20px; }

.card-cats { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }

.chip {
  font-size: .78rem; padding: 3px 10px;
  border-radius: 99px;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  transition: background .2s;
}
.chip:hover { background: color-mix(in srgb, var(--accent) 20%, transparent); }

.card-title {
  font-family: var(--serif);
  font-size: 1.25rem; line-height: 1.5; font-weight: 700;
  color: var(--text-heading);
}
.card-title a { transition: color .2s; }
.card-title a:hover { color: var(--accent); }

.card-excerpt {
  margin-top: 10px;
  color: var(--text-2);
  font-size: .92rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-meta {
  margin-top: 14px;
  font-size: .82rem; color: var(--text-3);
  display: flex; align-items: center; gap: 6px;
}

.dot { opacity: .6; }

/* ===== 分页 ===== */
.pagination {
  display: flex; align-items: center; justify-content: center; gap: 18px;
  padding: 12px 0 64px;
}
.page-btn {
  padding: 9px 20px; border-radius: 99px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  font-size: .92rem;
  transition: all .2s;
}
.page-btn:hover {
  color: #fff; background: var(--accent); border-color: var(--accent);
}
.page-info { color: var(--text-3); font-size: .9rem; }

.empty-tip {
  text-align: center; color: var(--text-3);
  padding: 48px 0;
}

/* ===== 文章详情 ===== */
.article-page { max-width: var(--article-w); }
.article { padding: 48px 0 24px; }

.article-title {
  font-family: var(--serif);
  font-size: clamp(1.7rem, 4vw, 2.35rem);
  line-height: 1.45; font-weight: 800;
  margin: 12px 0;
}
.article-meta {
  display: flex; align-items: center; gap: 8px;
  color: var(--text-3); font-size: .88rem;
  margin-bottom: 28px;
}
.article-cover {
  width: 100%; border-radius: var(--radius);
  margin-bottom: 32px;
}

/* 正文排版 */
.article-content { font-size: 1.02rem; line-height: 1.95; overflow-wrap: break-word; }
.article-content h2,
.article-content h3,
.article-content h4 {
  font-family: var(--serif);
  margin: 1.8em 0 .8em; line-height: 1.5;
}
.article-content h2 { font-size: 1.5rem; padding-left: 12px; border-left: 4px solid var(--accent); }
.article-content h3 { font-size: 1.28rem; }
.article-content h4 { font-size: 1.1rem; }
.article-content p { margin: 1em 0; }
.article-content a {
  color: var(--accent);
  border-bottom: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
}
.article-content a:hover { border-bottom-color: var(--accent); }
.article-content img {
  border-radius: 10px; margin: 1.2em auto;
  box-shadow: var(--shadow);
}
.article-content blockquote {
  margin: 1.4em 0; padding: 14px 20px;
  border-left: 4px solid var(--accent);
  background: color-mix(in srgb, var(--accent) 6%, transparent);
  border-radius: 0 10px 10px 0;
  color: var(--text-2);
}
.article-content ul, .article-content ol { padding-left: 1.6em; margin: 1em 0; }
.article-content li { margin: .45em 0; }
.article-content code {
  font-family: var(--mono);
  font-size: .88em;
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  padding: 2px 7px; border-radius: 5px;
}
.article-content pre {
  background: var(--code-bg);
  color: var(--code-fg);
  border: 1px solid var(--code-border);
  padding: 18px 22px; border-radius: 12px;
  overflow-x: auto; margin: 1.4em 0;
  line-height: 1.75;
}
.article-content pre code {
  background: none; padding: 0; color: inherit;
  font-family: var(--mono); font-size: .86rem;
}

/* Highlight.js 浅色雅致配色（变量驱动，可被配置覆盖） */
.article-content pre .hljs-keyword,
.article-content pre .hljs-selector-tag,
.article-content pre .hljs-literal { color: var(--code-keyword); }
.article-content pre .hljs-string,
.article-content pre .hljs-attr,
.article-content pre .hljs-selector-attr { color: var(--code-string); }
.article-content pre .hljs-comment,
.article-content pre .hljs-quote { color: var(--code-comment); font-style: italic; }
.article-content pre .hljs-number,
.article-content pre .hljs-symbol,
.article-content pre .hljs-bullet { color: var(--code-number); }
.article-content pre .hljs-title,
.article-content pre .hljs-title.function_,
.article-content pre .hljs-section { color: var(--code-title); }
.article-content pre .hljs-type,
.article-content pre .hljs-class .hljs-title,
.article-content pre .hljs-title.class_ { color: var(--code-type); }
.article-content pre .hljs-built_in,
.article-content pre .hljs-variable,
.article-content pre .hljs-template-variable { color: var(--code-builtin); }
.article-content pre .hljs-meta,
.article-content pre .hljs-doctag { color: var(--code-meta); }
.article-content pre .hljs-emphasis { font-style: italic; }
.article-content pre .hljs-strong { font-weight: 700; }
.article-content table {
  width: 100%; border-collapse: collapse; margin: 1.4em 0;
}
.article-content th, .article-content td {
  border: 1px solid var(--border); padding: 9px 13px; text-align: left;
}
.article-content th { background: color-mix(in srgb, var(--accent) 6%, transparent); }

/* 标签 & 评论 */
.article-footer { margin-top: 40px; }
.tag-list { display: flex; flex-wrap: wrap; gap: 10px; }

.tag {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 5px 13px; border-radius: 99px;
  font-size: .84rem;
  background: color-mix(in srgb, var(--accent) 9%, transparent);
  color: var(--accent);
  transition: transform .2s;
}
.tag:hover { transform: translateY(-2px); }
.tag sup { font-size: .72em; opacity: .75; }

.comments {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

/* ===== 归档 ===== */
.archive-group { margin-bottom: 36px; }
.archive-year {
  font-family: var(--serif);
  font-size: 1.55rem; color: var(--accent);
  margin-bottom: 12px;
}
.archive-month-title {
  font-size: 1.02rem; color: var(--text-3);
  margin: 18px 0 8px; font-weight: 600;
}
.archive-list { list-style: none; }
.archive-list li {
  display: flex; gap: 18px; align-items: baseline;
  padding: 9px 4px;
  border-bottom: 1px dashed var(--border);
}
.archive-list time {
  font-family: "JetBrains Mono", Consolas, monospace;
  font-size: .84rem; color: var(--text-3);
  white-space: nowrap;
}
.archive-list a { transition: color .2s; }
.archive-list a:hover { color: var(--accent); }

/* ===== 分类树 ===== */
.category-list, .category-children { list-style: none; }
.category-children { margin-left: 26px; border-left: 1px dashed var(--border); }

.category-node {
  display: flex; align-items: center; justify-content: space-between;
  padding: 13px 18px; margin: 6px 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: all .2s;
}
.category-node:hover {
  border-color: var(--accent);
  transform: translateX(4px);
}
.category-name { font-size: 1.02rem; }
.category-count {
  font-size: .82rem; color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  padding: 2px 11px; border-radius: 99px;
}

/* ===== 瞬间 ===== */
.moments-tagbar {
  display: flex; flex-wrap: wrap; gap: 10px;
  margin-bottom: 24px;
}

.moment-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  margin-bottom: 18px;
  box-shadow: var(--shadow);
}

.moment-head {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 12px;
}
.moment-avatar {
  width: 42px; height: 42px; border-radius: 50%;
  object-fit: cover; border: 1px solid var(--border);
}
.moment-author { font-weight: 600; display: block; }
.moment-time { font-size: .8rem; color: var(--text-3); }

.moment-content {
  line-height: 1.85;
  overflow-wrap: break-word;
}
.moment-content img { border-radius: 10px; margin: .6em 0; }

.moment-media {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 8px;
  margin-top: 12px;
}
.moment-media img {
  width: 100%; aspect-ratio: 1; object-fit: cover;
  border-radius: 10px; border: 1px solid var(--border);
}

.moment-foot {
  display: flex; align-items: center; gap: 16px;
  margin-top: 14px; padding-top: 12px;
  border-top: 1px dashed var(--border);
  font-size: .84rem; color: var(--text-3);
}
.moment-link { color: var(--accent); }
.moment-link:hover { text-decoration: underline; }

.moment-detail { margin-top: 32px; }

/* ===== 标签墙 ===== */
.tag-wall {
  display: flex; flex-wrap: wrap; gap: 12px;
  padding-bottom: 64px;
}

/* ===== 页脚 ===== */
.site-footer {
  margin-top: 32px;
  border-top: 1px solid var(--border);
  padding: 36px 24px;
  text-align: center;
  color: var(--text-3);
  font-size: .88rem;
}
.footer-brand { margin-bottom: 8px; }
.footer-brand span:first-child {
  font-family: var(--serif);
  color: var(--text-2); font-size: 1rem;
}
.footer-meta {
  display: flex; justify-content: center; gap: 12px; flex-wrap: wrap;
}
.footer-meta a:hover { color: var(--accent); }
.footer-custom { margin-top: 6px; color: var(--text-3); font-size: .82rem; }

/* ===== 响应式 ===== */
@media (max-width: 720px) {
  .post-grid { grid-template-columns: 1fr; }
  .hero { padding: 48px 0 32px; }

  .nav-toggle { display: block; }
  .main-nav {
    display: none;
    position: absolute; top: 60px; left: 0; right: 0;
    flex-direction: column;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 10px 16px 16px;
    box-shadow: var(--shadow);
  }
  .main-nav.open { display: flex; }
  .nav-item { width: 100%; }
  .nav-link { display: block; width: 100%; }
  .nav-sub {
    position: static; opacity: 1; visibility: visible; transform: none;
    border: none; box-shadow: none; background: transparent;
    padding-left: 12px;
  }

  .archive-list li { flex-direction: column; gap: 2px; }
}