:root {
  --bg: #f7f8fb;
  --bg-card: #ffffff;
  --text: #1c2230;
  --text-dim: #5c6880;
  --line: #e3e7ef;
  --accent: #3b6fe0;
  --accent-2: #2fae94;
  --shadow: 0 1px 3px rgba(20, 30, 60, .06), 0 8px 24px rgba(20, 30, 60, .05);
  /* 代码高亮（pygments/codehilite） */
  --hl-kw: #cf222e;
  --hl-str: #0a3069;
  --hl-com: #6e7781;
  --hl-num: #0550ae;
  --hl-fn: #8250df;
  --hl-bi: #953800;
}
/* 深色主题变量：跟随系统（未手动指定 light 时）或手动 data-theme=dark */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0d1220;
    --bg-card: #151c2e;
    --text: #e8ecf4;
    --text-dim: #9aa6bd;
    --line: #232c42;
    --accent: #7fa8ff;
    --accent-2: #8fd8c8;
    --shadow: 0 1px 3px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
    --hl-kw: #ff7b72;
    --hl-str: #a5d6ff;
    --hl-com: #8b949e;
    --hl-num: #79c0ff;
    --hl-fn: #d2a8ff;
    --hl-bi: #ffa657;
  }
}
:root[data-theme="dark"] {
  --bg: #0d1220;
  --bg-card: #151c2e;
  --text: #e8ecf4;
  --text-dim: #9aa6bd;
  --line: #232c42;
  --accent: #7fa8ff;
  --accent-2: #8fd8c8;
  --shadow: 0 1px 3px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
  --hl-kw: #ff7b72;
  --hl-str: #a5d6ff;
  --hl-com: #8b949e;
  --hl-num: #79c0ff;
  --hl-fn: #d2a8ff;
  --hl-bi: #ffa657;
}
* { 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", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}
.wrap { max-width: 920px; margin: 0 auto; padding: 0 1.5rem; }

/* 顶栏 */
header {
  position: sticky; top: 0; z-index: 10;
  backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 3.5rem;
}
.logo {
  font-weight: 700; font-size: 1.05rem; text-decoration: none;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.nav-links a {
  color: var(--text-dim); text-decoration: none; font-size: .95rem;
  margin-left: 1.4rem; transition: color .15s;
}
.nav-links a:hover { color: var(--text); }
.theme-btn {
  background: none; border: none; cursor: pointer;
  font-size: 1rem; margin-left: 1.2rem; padding: 0;
  vertical-align: middle; line-height: 1;
}

/* Hero */
.hero { padding: 5.5rem 0 4rem; }
.hero .hi { color: var(--accent); font-size: 1rem; letter-spacing: .1em; }
.hero h1 { font-size: clamp(2rem, 5.5vw, 3.2rem); line-height: 1.25; margin: .5rem 0 1rem; }
.hero h1 em {
  font-style: normal;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p { color: var(--text-dim); max-width: 36em; }
.hero .actions { margin-top: 2rem; }
.btn {
  display: inline-block; text-decoration: none; font-size: .95rem;
  padding: .55em 1.4em; border-radius: 8px; margin-right: .8rem;
  transition: transform .15s, opacity .15s;
}
.btn:hover { transform: translateY(-1px); opacity: .9; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-ghost { border: 1px solid var(--line); color: var(--text); }

/* 分节 */
section { padding: 3.5rem 0; border-top: 1px solid var(--line); }
.sec-head { display: flex; align-items: baseline; gap: 1rem; margin-bottom: 2rem; }
.sec-head h2 { font-size: 1.5rem; }
.sec-head span { color: var(--text-dim); font-size: .9rem; }

/* 卡片 */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1.2rem; }
.card {
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 12px;
  padding: 1.4rem; box-shadow: var(--shadow);
  display: flex; flex-direction: column; gap: .6rem;
  transition: transform .15s;
}
.card:hover { transform: translateY(-2px); }
.card h3 { font-size: 1.1rem; }
.card p { color: var(--text-dim); font-size: .92rem; flex: 1; }
.card .emoji { font-size: 1.6rem; line-height: 1; }
.tags { display: flex; flex-wrap: wrap; gap: .4rem; }
.tag {
  font-size: .75rem; color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  border-radius: 999px; padding: .15em .8em;
}
.card.placeholder { border-style: dashed; box-shadow: none; opacity: .75; }

/* 列表（博客/旅行） */
.post-list { list-style: none; }
.post-list li {
  display: flex; justify-content: space-between; align-items: baseline; gap: 1rem;
  padding: 1rem .2rem; border-bottom: 1px dashed var(--line);
}
.post-list a { color: var(--text); text-decoration: none; }
.post-list a:hover { color: var(--accent); }
.post-list time { color: var(--text-dim); font-size: .85rem; white-space: nowrap; }
.empty-note {
  margin-top: 1.2rem; color: var(--text-dim); font-size: .9rem;
  border-left: 3px solid var(--accent-2); padding-left: .9rem;
}

/* 关于 */
.about { display: flex; gap: 2rem; align-items: flex-start; flex-wrap: wrap; }
.about .text { flex: 1; min-width: 260px; color: var(--text-dim); }
.about .text strong { color: var(--text); }
.links a { color: var(--accent); text-decoration: none; margin-right: 1.2rem; }
.links a:hover { text-decoration: underline; }

/* 页脚 */
footer {
  border-top: 1px solid var(--line); padding: 2rem 0 2.5rem;
  color: var(--text-dim); font-size: .85rem; text-align: center;
}
footer a { color: var(--text-dim); text-decoration: none; }
footer a:hover { color: var(--text); }

/* 内页头部 */
.page-head { padding: 3.5rem 0 0; }
.page-head h1 { font-size: clamp(1.6rem, 4vw, 2.2rem); }
.page-head p { color: var(--text-dim); margin-top: .4rem; }
.crumb {
  display: inline-block; margin-top: 2rem; color: var(--text-dim);
  text-decoration: none; font-size: .9rem;
}
.crumb:hover { color: var(--accent); }
.sec-head .more { margin-left: auto; font-size: .85rem; color: var(--accent); text-decoration: none; }
.sec-head .more:hover { text-decoration: underline; }

/* 标签筛选 */
.filter-tags { display: flex; flex-wrap: wrap; gap: .5rem; margin: 1.5rem 0 .5rem; }
.filter-tags .tag { cursor: pointer; border: none; font-family: inherit; }
.filter-tags .tag.active { background: var(--accent); color: #fff; }

/* 加载/出错/空态 */
.state-note { color: var(--text-dim); padding: 2rem 0; font-size: .95rem; }
.state-note.error { color: #c0564f; }

/* 卡片补充：图片、评分、元信息 */
.card .thumb {
  width: calc(100% + 2.8rem); margin: -1.4rem -1.4rem .4rem;
  height: 160px; object-fit: cover;
  border-radius: 12px 12px 0 0; border-bottom: 1px solid var(--line);
}
.stars { color: #e8a33d; font-size: .85rem; letter-spacing: .1em; }
.meta { color: var(--text-dim); font-size: .85rem; }
.card .links-row { display: flex; gap: 1rem; font-size: .85rem; }
.card .links-row a { color: var(--accent); text-decoration: none; }
.card .links-row a:hover { text-decoration: underline; }

/* 文章/游记正文 */
.article { padding: 3rem 0 4rem; max-width: 720px; }
.article h1 { font-size: clamp(1.7rem, 4.5vw, 2.4rem); line-height: 1.3; margin-bottom: .6rem; }
.article .meta { margin-bottom: 2.2rem; }
.prose { color: var(--text); }
.prose h2 { margin: 2rem 0 .8rem; font-size: 1.35rem; }
.prose h3 { margin: 1.6rem 0 .6rem; font-size: 1.1rem; }
.prose p { margin: .9rem 0; }
.prose ul, .prose ol { margin: .9rem 0; padding-left: 1.6em; }
.prose li { margin: .3rem 0; }
.prose a { color: var(--accent); }
.prose blockquote {
  margin: 1.2rem 0; padding: .2rem 1.1rem; color: var(--text-dim);
  border-left: 3px solid var(--accent-2);
}
.prose code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: .88em; background: color-mix(in srgb, var(--accent) 10%, transparent);
  border-radius: 5px; padding: .12em .4em;
}
.prose pre {
  margin: 1.2rem 0; padding: 1rem 1.2rem; overflow-x: auto;
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 10px;
}
.prose pre code { background: none; padding: 0; font-size: .85rem; }
.prose img { max-width: 100%; border-radius: 10px; }
.prose table { border-collapse: collapse; margin: 1.2rem 0; width: 100%; }
.prose th, .prose td { border: 1px solid var(--line); padding: .45em .8em; font-size: .92rem; }
.prose th { background: color-mix(in srgb, var(--accent) 8%, transparent); }

/* 游记相册 */
.photo-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: .8rem; margin: 1.5rem 0;
}
.photo-grid img {
  width: 100%; height: 150px; object-fit: cover;
  border-radius: 10px; border: 1px solid var(--line);
}

/* 代码高亮（token 颜色跟随主题变量） */
.highlight .k, .highlight .kn, .highlight .kd, .highlight .kc, .highlight .kt,
.highlight .kr, .highlight .ow { color: var(--hl-kw); }
.highlight .s, .highlight .s1, .highlight .s2, .highlight .sb, .highlight .sd,
.highlight .se, .highlight .si, .highlight .sx { color: var(--hl-str); }
.highlight .c, .highlight .c1, .highlight .cm, .highlight .cs, .highlight .ch { color: var(--hl-com); font-style: italic; }
.highlight .m, .highlight .mi, .highlight .mf, .highlight .mh, .highlight .mo { color: var(--hl-num); }
.highlight .nf, .highlight .nc, .highlight .nd, .highlight .fm { color: var(--hl-fn); }
.highlight .nb, .highlight .bp, .highlight .nt, .highlight .na { color: var(--hl-bi); }

/* 站内搜索 */
.search-box {
  width: 100%; max-width: 420px; font: inherit; font-size: .95rem;
  color: var(--text); background: var(--bg-card);
  border: 1px solid var(--line); border-radius: 999px;
  padding: .5em 1.2em; margin-top: 1.5rem;
}
.search-box:focus { outline: none; border-color: var(--accent); }

/* 博客按年归档 */
.year-head {
  font-size: 1.05rem; color: var(--text-dim);
  margin: 2.2rem 0 .3rem; letter-spacing: .05em;
}

/* 文章页导航（上一篇/下一篇） */
.post-nav {
  display: flex; justify-content: space-between; gap: 1rem;
  margin-top: 3rem; padding-top: 1.5rem; border-top: 1px dashed var(--line);
  font-size: .92rem;
}
.post-nav a { color: var(--accent); text-decoration: none; max-width: 45%; }
.post-nav a:hover { text-decoration: underline; }

/* 目录 */
.toc {
  margin: 1.5rem 0; padding: 1rem 1.4rem;
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 10px;
  font-size: .92rem;
}
.toc b { display: block; margin-bottom: .4rem; color: var(--text-dim); font-weight: 600; }
.toc ul { list-style: none; }
.toc li.toc-h3 { padding-left: 1.2em; }
.toc a { color: var(--text); text-decoration: none; line-height: 1.9; }
.toc a:hover { color: var(--accent); }

/* 花园数据 */
.stats-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 1rem; margin: 2rem 0;
}
.stat-tile {
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 12px;
  box-shadow: var(--shadow); padding: 1.1rem 1.3rem;
}
.stat-tile .num {
  font-size: 1.7rem; font-weight: 700; line-height: 1.2;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat-tile .label { color: var(--text-dim); font-size: .85rem; margin-top: .2rem; }

.heatmap-wrap { overflow-x: auto; padding-bottom: .5rem; }
.heatmap {
  display: grid; grid-auto-flow: column;
  grid-template-rows: repeat(7, 12px); gap: 3px; width: max-content;
}
.hm-cell {
  width: 12px; height: 12px; border-radius: 3px;
  background: color-mix(in srgb, var(--line) 55%, transparent);
}
.hm-cell.l1 { background: color-mix(in srgb, var(--accent-2) 30%, transparent); }
.hm-cell.l2 { background: color-mix(in srgb, var(--accent-2) 55%, transparent); }
.hm-cell.l3 { background: color-mix(in srgb, var(--accent-2) 80%, transparent); }
.hm-cell.l4 { background: var(--accent-2); }
.hm-legend {
  display: flex; align-items: center; gap: .35rem;
  color: var(--text-dim); font-size: .78rem; margin-top: .6rem;
}

/* 浇水按钮 */
.water-row { margin-top: 2.5rem; text-align: center; }
.water-btn {
  font: inherit; font-size: 1rem; cursor: pointer;
  padding: .6em 1.6em; border-radius: 999px;
  border: 1px solid var(--line); background: var(--bg-card); color: var(--text);
  transition: transform .15s, border-color .15s;
}
.water-btn:hover { transform: translateY(-1px); border-color: var(--accent-2); }
.water-btn.watered { border-color: var(--accent-2); color: var(--accent-2); cursor: default; }
.water-note { color: var(--text-dim); font-size: .8rem; margin-top: .5rem; }

/* 图片灯箱 */
#lightbox {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(8, 10, 18, .88);
  display: flex; align-items: center; justify-content: center;
  padding: 2rem; cursor: zoom-out;
}
#lightbox img {
  max-width: 100%; max-height: 100%; object-fit: contain;
  border-radius: 8px; box-shadow: 0 8px 40px rgba(0, 0, 0, .5);
}
.photo-grid img, .card .thumb, .prose img { cursor: zoom-in; }

/* 说说 */
.moment {
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 12px;
  box-shadow: var(--shadow); padding: 1.1rem 1.4rem; margin-bottom: 1rem;
}
.moment time { color: var(--text-dim); font-size: .82rem; display: block; margin-bottom: .3rem; }
.moment .prose p { margin: .3rem 0; }