:root {
  --bg: #f7f8fa;
  --bg-soft: #eef0f4;
  --panel: #ffffff;
  --text: #1b1f24;
  --text-soft: #3d444d;
  --muted: #737b85;
  --border: #e3e7ec;
  --border-strong: #d3d9e0;
  --brand-deep: #1a3fd6;
  --brand-mid: #2f6fe4;
  --brand-cyan: #22d3ee;
  --brand-grad: linear-gradient(135deg, var(--brand-deep), var(--brand-cyan));
  --accent: #2f6fe4;
  --accent-2: #0fb9d6;
  --accent-soft: rgba(47, 111, 228, .1);
  --accent-text: #fff;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, .04), 0 2px 8px rgba(16, 24, 40, .05);
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 10px 28px rgba(16, 24, 40, .07);
  --radius: 14px;
  --radius-sm: 9px;
  --tok-keyword: #cf222e;
  --tok-string: #0a3069;
  --tok-comment: #6e7781;
  --tok-number: #0550ae;
  --tok-variable: #953800;
  --tok-flag: #0550ae;
  --code-bg: #f6f8fa;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", "Courier New", monospace;
}

[data-theme="dark"] {
  --bg: #0c1016;
  --bg-soft: #141a22;
  --panel: #151b23;
  --text: #e7edf3;
  --text-soft: #c4ccd6;
  --muted: #8b949e;
  --border: #242c36;
  --border-strong: #2f3944;
  --brand-deep: #4f8cff;
  --brand-mid: #58a6ff;
  --brand-cyan: #22d3ee;
  --brand-grad: linear-gradient(135deg, var(--brand-mid), var(--brand-cyan));
  --accent: #58a6ff;
  --accent-2: #22d3ee;
  --accent-soft: rgba(88, 166, 255, .14);
  --accent-text: #0c1016;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .4), 0 2px 10px rgba(0, 0, 0, .3);
  --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 12px 30px rgba(0, 0, 0, .38);
  --tok-keyword: #ff7b72;
  --tok-string: #a5d6ff;
  --tok-comment: #8b949e;
  --tok-number: #79c0ff;
  --tok-variable: #ffa657;
  --tok-flag: #79c0ff;
  --code-bg: #0f151d;
}

* { box-sizing: border-box; }

html { scroll-behavior: auto; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  transition: background-color .25s ease, color .25s ease;
  background-image:
    radial-gradient(circle at 12% 8%, var(--accent-soft) 0, transparent 42%),
    radial-gradient(circle at 88% 4%, rgba(34, 211, 238, .05) 0, transparent 38%);
  background-attachment: fixed;
}

a { color: var(--accent); text-decoration: none; transition: color .18s ease; }
a:hover { color: var(--accent-2); }
img { max-width: 100%; height: auto; }
::selection { background: var(--accent-soft); color: var(--text); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 3px; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.muted { color: var(--muted); font-size: .9em; }
.accent { color: var(--accent); }

#progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0;
  z-index: 90;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner { display: flex; align-items: center; gap: 20px; height: 62px; }

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-size: 1.08rem;
  font-weight: 700;
  flex-shrink: 0;
}
.brand:hover { color: var(--text); }

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px; height: 34px;
  flex-shrink: 0;
  border-radius: 9px;
  background: var(--panel);
  border: 1px solid var(--border);
  box-shadow: 0 1px 4px rgba(26, 63, 214, .16);
  transition: transform .2s ease, box-shadow .2s ease;
}
.brand-mark img { width: 26px; height: 26px; display: block; object-fit: contain; }
.brand:hover .brand-mark { transform: translateY(-1px); box-shadow: 0 4px 14px rgba(26, 63, 214, .28); }
.brand .dom { font-family: var(--mono); font-size: .78em; letter-spacing: 0; }

.nav { display: flex; gap: 4px; margin-left: 8px; }
.nav a {
  position: relative;
  padding: 7px 13px;
  color: var(--text-soft);
  font-size: .94rem;
  border-radius: var(--radius-sm);
  transition: all .18s ease;
}
.nav a:hover { color: var(--accent); background: var(--accent-soft); }
.nav a.active { color: var(--accent); font-weight: 600; }
.nav a.active::after {
  content: "";
  position: absolute;
  left: 13px; right: 13px; bottom: 1px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 2px;
}

.header-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }

.search {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 0 11px;
  height: 36px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all .18s ease;
}
.search:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.search input {
  width: 150px;
  border: 0;
  background: none;
  color: var(--text);
  font-size: .88rem;
  font-family: inherit;
  outline: none;
}
.search input::placeholder { color: var(--muted); }
.search input::-webkit-search-cancel-button { filter: grayscale(1); opacity: .5; cursor: pointer; }
.search svg { width: 15px; height: 15px; color: var(--muted); flex-shrink: 0; }

.icon-btn {
  display: grid;
  place-items: center;
  width: 36px; height: 36px;
  padding: 0;
  color: var(--text-soft);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all .18s ease;
}
.icon-btn:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }
.icon-btn:active { transform: scale(.94); }
.icon-btn svg { width: 17px; height: 17px; }

.hero {
  position: relative;
  overflow: hidden;
  margin: 30px 0 8px;
  padding: 52px 44px 44px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 22% 28%, var(--accent-soft) 0 8%, transparent 8.5%),
    radial-gradient(circle at 68% 62%, rgba(34, 211, 238, .07) 0 12%, transparent 12.5%);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(90deg, var(--border) 1px, transparent 1px),
    linear-gradient(180deg, var(--border) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: .35;
  mask-image: radial-gradient(circle at 78% 100%, #000 0, transparent 62%);
  -webkit-mask-image: radial-gradient(circle at 78% 100%, #000 0, transparent 62%);
  pointer-events: none;
}
.hero > * { position: relative; z-index: 1; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 13px;
  margin-bottom: 18px;
  font-family: var(--mono);
  font-size: .76rem;
  letter-spacing: .04em;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--border);
  border-radius: 999px;
}
.hero-badge::before {
  content: "";
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 7px var(--accent-2);
}

.hero h1 {
  margin: 0 0 16px;
  font-size: 2.3rem;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -.01em;
  color: var(--text);
}
.hero h1 .accent {
  color: var(--accent);
  padding: 0 3px;
  background: linear-gradient(180deg, transparent 66%, var(--accent-soft) 66%);
}

.hero-desc {
  max-width: 640px;
  margin: 0 0 26px;
  color: var(--text-soft);
  font-size: 1.02rem;
  line-height: 1.8;
}

.stats {
  display: flex;
  flex-wrap: wrap;
  margin-bottom: 26px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg-soft);
}
.stats div {
  flex: 1 1 120px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 14px 10px;
  border-right: 1px solid var(--border);
}
.stats div:last-child { border-right: 0; }
.stats b {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}
.stats span { font-size: .8rem; color: var(--muted); }

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 22px;
  font-size: .94rem;
  font-weight: 500;
  color: var(--text);
  background: var(--bg-soft);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all .18s ease;
}
.btn:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }
.btn-primary {
  color: #fff;
  background: var(--brand-grad);
  border-color: transparent;
  box-shadow: 0 3px 14px rgba(26, 63, 214, .3);
}
.btn-primary:hover {
  color: #fff;
  background: var(--brand-grad);
  border-color: transparent;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(26, 63, 214, .38);
}
[data-theme="dark"] .btn-primary { color: #0c1016; }
[data-theme="dark"] .btn-primary:hover { color: #0c1016; }

.section { margin: 46px 0; }

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.section-head h2 {
  margin: 0;
  font-size: 1.32rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}
.section-head h2::before {
  content: "";
  width: 4px; height: 17px;
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  border-radius: 2px;
}
.section-head .muted { font-size: .84rem; }
.more-row { margin-top: 24px; text-align: center; }

.filters { display: flex; flex-wrap: wrap; gap: 9px; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 15px;
  font-size: .88rem;
  color: var(--text-soft);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 999px;
  transition: all .16s ease;
}
.chip:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }
.chip i { font-style: normal; font-size: .78em; color: var(--muted); }
.chip.on { color: #fff; background: var(--brand-grad); border-color: transparent; }
.chip.on i { color: rgba(255, 255, 255, .8); }
[data-theme="dark"] .chip.on { color: #0c1016; }
[data-theme="dark"] .chip.on i { color: rgba(0, 0, 0, .6); }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(288px, 1fr)); gap: 20px; }
.grid-2 { grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); }

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.card:hover { transform: translateY(-3px); border-color: var(--border-strong); box-shadow: var(--shadow); }
.card:hover .card-link { color: var(--accent); }
.card-link::after { content: ""; position: absolute; inset: 0; z-index: 1; }
.card-link { color: var(--text); }

.card-cover {
  position: relative;
  height: 96px;
  display: flex;
  align-items: center;
  padding: 0 18px;
}
.card-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 88% -30%, rgba(255, 255, 255, .25) 0 30%, transparent 31%),
    linear-gradient(90deg, transparent 55%, rgba(0, 0, 0, .14));
  pointer-events: none;
}
.card-featured .card-cover { height: 128px; }

.cover-cat {
  position: relative;
  z-index: 1;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: #fff;
  text-shadow: 0 1px 6px rgba(0, 0, 0, .3);
}
.card-featured .cover-cat { font-size: 1.7rem; }

.cover-pin {
  position: absolute;
  top: 12px; right: 12px;
  z-index: 2;
  padding: 3px 10px;
  font-size: .72rem;
  color: #fff;
  background: rgba(0, 0, 0, .32);
  border: 1px solid rgba(255, 255, 255, .35);
  border-radius: 999px;
}

.card-body { display: flex; flex-direction: column; flex: 1; padding: 16px 18px 18px; }

.card-meta {
  font-family: var(--mono);
  font-size: .74rem;
  color: var(--muted);
  margin-bottom: 8px;
}
.card h3 { margin: 0 0 9px; font-size: 1.1rem; font-weight: 600; line-height: 1.5; }
.card-featured h3 { font-size: 1.26rem; }
.card p {
  margin: 0 0 14px;
  font-size: .9rem;
  color: var(--text-soft);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-featured p { -webkit-line-clamp: 4; font-size: .94rem; }

.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; }
.tag {
  position: relative;
  z-index: 2;
  padding: 2px 10px;
  font-size: .76rem;
  color: var(--muted);
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 999px;
  transition: all .16s ease;
}
.tag:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }

.empty { padding: 60px 20px; text-align: center; color: var(--muted); }
.empty p { margin: 0 0 14px; font-size: 1rem; }

.page-head { margin: 34px 0 26px; }
.page-head h1 { margin: 0 0 8px; font-size: 2rem; font-weight: 700; letter-spacing: -.01em; }
.page-head p { margin: 0; }

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 22px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.tag-item {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 14px;
  color: var(--text-soft);
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 999px;
  transition: all .16s ease;
}
.tag-item:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }
.tag-item i { font-style: normal; font-size: .76em; color: var(--muted); }
.tag-item.sm { font-size: .84rem; }
.tag-item.md { font-size: .96rem; }
.tag-item.lg { font-size: 1.1rem; font-weight: 600; }
.tag-item.on { color: #fff; background: var(--brand-grad); border-color: transparent; }
.tag-item.on i { color: rgba(255, 255, 255, .8); }
[data-theme="dark"] .tag-item.on { color: #0c1016; }
[data-theme="dark"] .tag-item.on i { color: rgba(0, 0, 0, .6); }

.timeline { position: relative; }
.tl-year { margin-bottom: 34px; }
.tl-year h2 { display: flex; align-items: center; gap: 12px; margin: 0 0 14px; font-size: 1.5rem; font-weight: 700; }
.tl-year h2::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--border-strong), transparent);
}
.tl-year h2 .muted { font-size: .8rem; }
.tl-list { list-style: none; margin: 0; padding: 0 0 0 20px; border-left: 1px solid var(--border); }
.tl-list li { position: relative; display: flex; align-items: baseline; gap: 12px; padding: 7px 0; }
.tl-list li::before {
  content: "";
  position: absolute;
  left: -24px; top: 15px;
  width: 7px; height: 7px;
  background: var(--bg);
  border: 2px solid var(--accent);
  border-radius: 50%;
}
.tl-list time { flex-shrink: 0; width: 46px; font-family: var(--mono); font-size: .8rem; color: var(--muted); }
.tl-list a { flex: 1; color: var(--text); font-size: .95rem; }
.tl-list a:hover { color: var(--accent); }
.tl-cat { flex-shrink: 0; padding: 1px 9px; font-size: .72rem; color: #fff; border-radius: 999px; }

.post-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 240px;
  gap: 44px;
  align-items: start;
  padding: 26px 0 60px;
}
.post-main { min-width: 0; }

.crumbs { display: flex; align-items: center; gap: 7px; margin-bottom: 18px; font-size: .84rem; color: var(--muted); flex-wrap: wrap; }
.crumbs a { color: var(--muted); }
.crumbs a:hover { color: var(--accent); }
.crumbs em { font-style: normal; color: var(--text-soft); }

.post-head { padding-bottom: 20px; margin-bottom: 30px; border-bottom: 1px solid var(--border); }
.post-head h1 { margin: 0 0 14px; font-size: 2.1rem; font-weight: 700; line-height: 1.4; letter-spacing: -.01em; }
.post-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; font-size: .84rem; color: var(--muted); margin-bottom: 14px; }
.post-cat { padding: 3px 12px; font-size: .84rem; font-weight: 600; color: #fff; border-radius: 999px; }
.post-head .tags { margin-top: 0; }

.body { font-size: 1.02rem; line-height: 1.85; color: var(--text); }
.body h2 {
  margin: 42px 0 16px;
  padding-left: 13px;
  font-size: 1.48rem;
  font-weight: 700;
  border-left: 4px solid var(--accent);
  scroll-margin-top: 80px;
}
.body h3 { margin: 30px 0 12px; font-size: 1.18rem; font-weight: 600; color: var(--text-soft); scroll-margin-top: 80px; }
.body h4 { margin: 22px 0 10px; font-size: 1.06rem; font-weight: 600; color: var(--text-soft); scroll-margin-top: 80px; }
.body p { margin: 0 0 16px; }
.body ul, .body ol { margin: 0 0 16px; padding-left: 26px; }
.body li { margin: 5px 0; }
.body li > ul, .body li > ol { margin: 5px 0; }
.body li.task { list-style: none; display: flex; align-items: flex-start; gap: 8px; margin-left: -18px; }

.task-box {
  flex-shrink: 0;
  width: 15px; height: 15px;
  margin-top: 6px;
  border: 1.5px solid var(--border-strong);
  border-radius: 3px;
}
.task-box.done { background: var(--accent); border-color: var(--accent); position: relative; }
.task-box.done::after {
  content: "";
  position: absolute;
  left: 4px; top: 1px;
  width: 4px; height: 8px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(42deg);
}
.task-text.done { color: var(--muted); text-decoration: line-through; }

.body blockquote {
  margin: 20px 0;
  padding: 14px 20px;
  color: var(--text-soft);
  background: var(--accent-soft);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.body blockquote p:last-child { margin-bottom: 0; }

.body hr {
  height: 1px;
  margin: 38px 0;
  border: 0;
  background: linear-gradient(90deg, transparent, var(--border-strong) 20%, var(--border-strong) 80%, transparent);
}

.anchor { margin-left: 8px; font-size: .72em; color: var(--accent); opacity: 0; transition: opacity .16s ease; }
.body h2:hover .anchor, .body h3:hover .anchor { opacity: 1; }

.table-wrap { overflow-x: auto; margin: 20px 0; }
.body table { width: 100%; border-collapse: collapse; font-size: .92rem; }
.body th, .body td { padding: 9px 14px; border: 1px solid var(--border); text-align: left; }
.body th { background: var(--bg-soft); font-weight: 600; color: var(--text-soft); }
.body tbody tr:nth-child(even) { background: var(--bg-soft); }

.code-block {
  margin: 20px 0;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.code-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 12px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
}
.code-lang { font-family: var(--mono); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.copy-btn {
  padding: 2px 10px;
  font-size: .74rem;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 999px;
  cursor: pointer;
  transition: all .16s ease;
}
.copy-btn:hover { color: var(--accent); border-color: var(--accent); }
.copy-btn.done { color: var(--accent); border-color: var(--accent); }

.code-block pre { margin: 0; padding: 15px 16px; overflow-x: auto; }
.code-block code { font-family: var(--mono); font-size: .86rem; line-height: 1.7; color: var(--text); }

.body :not(pre) > code {
  padding: 2px 6px;
  font-family: var(--mono);
  font-size: .86em;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 4px;
}

.tok-keyword { color: var(--tok-keyword); }
.tok-string { color: var(--tok-string); }
.tok-comment { color: var(--tok-comment); font-style: italic; }
.tok-number { color: var(--tok-number); }
.tok-variable { color: var(--tok-variable); }
.tok-flag { color: var(--tok-flag); }

.toc {
  position: sticky;
  top: 80px;
  max-height: calc(100vh - 110px);
  overflow-y: auto;
  padding-left: 16px;
  border-left: 1px solid var(--border);
  font-size: .86rem;
}
.toc-title { margin-bottom: 12px; font-size: .82rem; font-weight: 700; letter-spacing: .08em; color: var(--muted); }
.toc a {
  display: block;
  color: var(--muted);
  border-left: 2px solid transparent;
  margin-left: -17px;
  padding: 4px 0 4px 15px;
  line-height: 1.5;
  transition: color .16s ease, border-color .16s ease;
}
.toc a:hover { color: var(--accent); }
.toc a.lv3 { padding-left: 27px; font-size: .82rem; }
.toc a.on { color: var(--accent); border-left-color: var(--accent); font-weight: 600; }

.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 40px; }
.pager a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 15px 18px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all .18s ease;
}
.pager a:hover { border-color: var(--accent); box-shadow: var(--shadow-sm); }
.pager small { font-size: .76rem; color: var(--muted); }
.pager strong { font-size: .95rem; color: var(--text); font-weight: 500; line-height: 1.5; }
.pager .next { text-align: right; }
.pager .placeholder { opacity: .5; }
.pager .placeholder:hover { border-color: var(--border); box-shadow: none; }

.panel {
  margin-bottom: 22px;
  padding: 24px 26px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.panel h2 { margin: 0 0 14px; font-size: 1.18rem; font-weight: 700; display: flex; align-items: center; gap: 9px; }
.panel h2::before {
  content: "";
  width: 4px; height: 16px;
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  border-radius: 2px;
}

.stack { display: flex; flex-wrap: wrap; gap: 8px; }
.stack span {
  padding: 4px 12px;
  font-size: .84rem;
  color: var(--text-soft);
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 999px;
}

.bars { display: flex; flex-direction: column; gap: 11px; }
.bar-row { display: flex; align-items: center; gap: 12px; }
.bar-label { width: 72px; flex-shrink: 0; font-size: .88rem; color: var(--text-soft); }
.bar-track { flex: 1; height: 9px; background: var(--bg-soft); border-radius: 999px; overflow: hidden; }
.bar-track i { display: block; height: 100%; border-radius: 999px; }
.bar-num { width: 52px; flex-shrink: 0; text-align: right; font-size: .82rem; color: var(--muted); }

mark { padding: 1px 3px; background: rgba(47, 111, 228, .2); color: inherit; border-radius: 3px; }

.related { margin-top: 44px; padding-top: 26px; border-top: 1px solid var(--border); }
.related h2 { margin: 0 0 16px; font-size: 1.15rem; font-weight: 700; }
.rel-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 12px; }
.rel-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all .18s ease;
}
.rel-item:hover { border-color: var(--accent); box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.rel-cat { align-self: flex-start; padding: 1px 9px; font-size: .72rem; color: #fff; border-radius: 999px; }
.rel-item strong { font-size: .95rem; font-weight: 500; color: var(--text); line-height: 1.5; }
.rel-item:hover strong { color: var(--accent); }
.rel-item small { font-size: .76rem; color: var(--muted); }

.to-top {
  position: fixed;
  right: 26px; bottom: 26px;
  z-index: 80;
  display: grid;
  place-items: center;
  width: 44px; height: 44px;
  padding: 0;
  color: #fff;
  background: var(--brand-grad);
  border: 1px solid transparent;
  border-radius: 50%;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity .22s ease, transform .22s ease, box-shadow .22s ease;
  box-shadow: 0 4px 16px rgba(26, 63, 214, .34);
}
.to-top.show { opacity: 1; visibility: visible; pointer-events: auto; transform: translateY(0); }
.to-top:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(26, 63, 214, .44); }
.to-top:active { transform: translateY(0) scale(.94); }
.to-top svg { width: 18px; height: 18px; }
[data-theme="dark"] .to-top { color: #0c1016; }

kbd {
  padding: 2px 7px;
  font-family: var(--mono);
  font-size: .82em;
  color: var(--text-soft);
  background: var(--bg-soft);
  border: 1px solid var(--border-strong);
  border-bottom-width: 2px;
  border-radius: 4px;
}

.site-footer { margin-top: 60px; padding: 34px 0 28px; background: var(--panel); border-top: 1px solid var(--border); }
.footer-inner { display: flex; flex-direction: column; align-items: center; gap: 10px; text-align: center; font-size: .88rem; color: var(--text-soft); }
.footer-inner a { color: var(--muted); }
.footer-inner a:hover { color: var(--accent); }

.footer-icp {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px 16px;
  margin-top: 6px;
  padding-top: 14px;
  border-top: 1px dashed var(--border);
  font-size: .82rem;
  color: var(--muted);
}
.footer-icp .icp-item { display: inline-flex; align-items: center; gap: 6px; }
.footer-icp a { color: var(--muted); border-bottom: 1px dotted var(--border-strong); }
.footer-icp a:hover { color: var(--accent); border-bottom-color: var(--accent); }

.ext-ref { color: var(--text-soft); border-bottom: 1px dotted var(--border-strong); cursor: default; }

@media (max-width: 1000px) {
  .post-layout { grid-template-columns: 1fr; gap: 0; }
  .toc { display: none; }
}

@media (max-width: 760px) {
  .wrap { padding: 0 16px; }
  .header-inner { height: auto; flex-wrap: wrap; padding: 10px 0; gap: 12px; }
  .nav { order: 3; width: 100%; margin-left: 0; overflow-x: auto; }
  .search input { width: 110px; }
  .hero { padding: 34px 22px 30px; }
  .hero h1 { font-size: 1.68rem; }
  .stats div { flex-basis: 50%; border-bottom: 1px solid var(--border); }
  .post-head h1 { font-size: 1.6rem; }
  .body h2 { font-size: 1.26rem; }
  .pager { grid-template-columns: 1fr; }
  .pager .next { text-align: left; }
  .footer-inner { font-size: .82rem; }
}

@media print {
  .site-header, .site-footer, .toc, .to-top, #progress,
  .hero-actions, .pager, .related, .more-row { display: none !important; }
  body { background: #fff; color: #000; }
  .post-layout { display: block; }
  .card, .panel, .hero { border: 1px solid #ccc; box-shadow: none; }
}


.sitemap-nav { columns: 2; column-gap: 32px; }
.sitemap-nav a { display: block; padding: 3px 0; font-size: .9rem; color: var(--text-soft); }
.sitemap-nav a:hover { color: var(--accent); }
.sitemap-group { margin-bottom: 26px; break-inside: avoid; }
.sitemap-group h3 { margin: 0 0 10px; font-size: 1.02rem; font-weight: 700; display: flex; align-items: center; gap: 8px; }
.sitemap-group h3::before { content: ""; width: 10px; height: 10px; border-radius: 3px; }

@media (max-width: 760px) {
  .sitemap-nav { columns: 1; }
}