/* ============================================================
   JasonDeng 的技术随笔 — 站点样式
   浅色为默认主题，支持深色模式（data-theme="dark"）
   ============================================================ */

:root {
  --bg:            #ffffff;
  --bg-soft:       #f6f7f9;
  --bg-elev:       #ffffff;
  --bg-code:       #f6f8fa;
  --border:        #e5e7eb;
  --border-soft:   #eef0f3;
  --text:          #14161a;
  --text-soft:     #4b5563;
  --text-mute:     #8b93a1;
  --accent:        #2f6df6;
  --accent-hover:  #1b4fd8;
  --accent-soft:   #eaf1ff;
  --accent-line:   #c9dbff;
  --mark:          #fff3c4;
  --shadow-sm:     0 1px 2px rgba(16,24,40,.05);
  --shadow-md:     0 8px 24px -8px rgba(16,24,40,.12);
  --radius:        14px;
  --radius-sm:     8px;
  --maxw:          1120px;
  --readw:         760px;
  --mono: "SF Mono", ui-monospace, SFMono-Regular, "JetBrains Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
          "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

html[data-theme="dark"] {
  --bg:            #0e1116;
  --bg-soft:       #14181f;
  --bg-elev:       #161b23;
  --bg-code:       #14181f;
  --border:        #252b36;
  --border-soft:   #1d222b;
  --text:          #e6e9ef;
  --text-soft:     #a9b2c1;
  --text-mute:     #78818f;
  --accent:        #6ea0ff;
  --accent-hover:  #93b8ff;
  --accent-soft:   #17233c;
  --accent-line:   #2a3f68;
  --mark:          #4a3d12;
  --shadow-sm:     0 1px 2px rgba(0,0,0,.4);
  --shadow-md:     0 8px 28px -8px rgba(0,0,0,.6);
}

* { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

img { max-width: 100%; height: auto; }

/* ---------- 布局容器 ---------- */
.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--border-soft);
}

.site-header__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
  height: 62px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 650;
  color: var(--text);
  letter-spacing: -.01em;
  flex: 0 0 auto;
}
.brand:hover { color: var(--text); }

.brand__mark {
  width: 30px; height: 30px;
  border-radius: 9px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, #2f6df6, #7c3aed);
  color: #fff;
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: -.03em;
  box-shadow: var(--shadow-sm);
}

.brand__text { font-size: 15.5px; }
.brand__text small {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-mute);
  letter-spacing: .02em;
  line-height: 1.2;
  margin-top: -2px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: auto;
}

.site-nav a {
  padding: 7px 12px;
  border-radius: var(--radius-sm);
  font-size: 14.5px;
  color: var(--text-soft);
  font-weight: 500;
  transition: background .16s ease, color .16s ease;
}
.site-nav a:hover { background: var(--bg-soft); color: var(--text); }
.site-nav a[aria-current="page"] { color: var(--accent); background: var(--accent-soft); }

.nav-tools { display: flex; align-items: center; gap: 6px; }

.icon-btn {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  border-radius: var(--radius-sm);
  color: var(--text-soft);
  cursor: pointer;
  padding: 0;
  transition: color .16s, border-color .16s, background .16s;
}
.icon-btn:hover { color: var(--accent); border-color: var(--accent-line); }
.icon-btn svg { width: 17px; height: 17px; }

.nav-toggle { display: none; }

/* ---------- 首页 Hero ---------- */
.hero {
  padding: 76px 0 54px;
  border-bottom: 1px solid var(--border-soft);
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-mute);
  border: 1px solid var(--border);
  background: var(--bg-elev);
  padding: 5px 12px 5px 10px;
  border-radius: 999px;
  margin-bottom: 22px;
}
.hero__eyebrow::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 0 3px rgba(34,197,94,.16);
}

.hero h1 {
  font-size: clamp(2rem, 5.2vw, 3.15rem);
  line-height: 1.18;
  letter-spacing: -.028em;
  margin: 0 0 18px;
  font-weight: 750;
}

.hero h1 .grad {
  background: linear-gradient(100deg, #2f6df6 10%, #7c3aed 60%, #db2777 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p.lead {
  font-size: 17.5px;
  color: var(--text-soft);
  max-width: 680px;
  margin: 0 0 26px;
}

.hero__actions { display: flex; flex-wrap: wrap; gap: 10px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 18px;
  border-radius: 10px;
  font-size: 14.5px;
  font-weight: 550;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text);
  transition: transform .16s, box-shadow .16s, border-color .16s;
}
.btn:hover { color: var(--text); transform: translateY(-1px); box-shadow: var(--shadow-sm); border-color: var(--accent-line); }

.btn--primary {
  background: linear-gradient(135deg, #2f6df6, #4f46e5);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 6px 18px -6px rgba(47,109,246,.6);
}
.btn--primary:hover { color: #fff; box-shadow: 0 10px 24px -8px rgba(47,109,246,.7); }
.btn svg { width: 16px; height: 16px; }

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 34px;
  margin-top: 40px;
  padding-top: 26px;
  border-top: 1px dashed var(--border);
}
.stat__num {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.2;
}
.stat__label { font-size: 13px; color: var(--text-mute); }

/* ---------- 区块标题 ---------- */
.section { padding: 54px 0; }
.section + .section { border-top: 1px solid var(--border-soft); }

.section__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 26px;
}
.section__head h2 {
  font-size: 21px;
  margin: 0;
  letter-spacing: -.015em;
  font-weight: 680;
}
.section__head .more {
  margin-left: auto;
  font-size: 14px;
  color: var(--text-mute);
  white-space: nowrap;
}
.section__head .more:hover { color: var(--accent); }
.section__head p { margin: 0; color: var(--text-mute); font-size: 14px; }

/* ---------- 文章列表 ---------- */
.post-list { display: flex; flex-direction: column; gap: 14px; }

.post-card {
  position: relative;
  display: block;
  padding: 22px 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elev);
  color: inherit;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
  overflow: hidden;
}
.post-card::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--accent), #7c3aed);
  opacity: 0;
  transition: opacity .18s ease;
}
.post-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent-line);
  color: inherit;
}
.post-card:hover::before { opacity: 1; }

.post-card__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
  color: var(--text-mute);
  margin-bottom: 9px;
  font-variant-numeric: tabular-nums;
}
.post-card__meta .dot { width: 3px; height: 3px; border-radius: 50%; background: currentColor; opacity: .5; }

.post-card h3 {
  margin: 0 0 8px;
  font-size: 18.5px;
  line-height: 1.45;
  letter-spacing: -.012em;
  font-weight: 640;
  color: var(--text);
}
.post-card:hover h3 { color: var(--accent); }

.post-card p {
  margin: 0;
  color: var(--text-soft);
  font-size: 14.5px;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card__tags { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 7px; }

/* ---------- 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12.5px;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--bg-soft);
  border: 1px solid var(--border-soft);
  color: var(--text-soft);
  font-weight: 500;
  transition: background .16s, color .16s, border-color .16s;
  white-space: nowrap;
}
.tag:hover { background: var(--accent-soft); color: var(--accent); border-color: var(--accent-line); }
.tag .count { color: var(--text-mute); font-size: 11.5px; }

.tag-cloud { display: flex; flex-wrap: wrap; gap: 9px; }

/* ---------- 文章详情 ---------- */
.article-head {
  padding: 52px 0 30px;
  border-bottom: 1px solid var(--border-soft);
}
.article-head__inner { max-width: var(--readw); }

.breadcrumb {
  font-size: 13.5px;
  color: var(--text-mute);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.breadcrumb a { color: var(--text-mute); }
.breadcrumb a:hover { color: var(--accent); }

.article-head h1 {
  font-size: clamp(1.7rem, 4vw, 2.35rem);
  line-height: 1.28;
  letter-spacing: -.024em;
  margin: 0 0 18px;
  font-weight: 720;
}

.article-head__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 13.5px;
  color: var(--text-mute);
  font-variant-numeric: tabular-nums;
}
.article-head__meta .dot { width: 3px; height: 3px; border-radius: 50%; background: currentColor; opacity: .5; }

.article-head__tags { margin-top: 18px; display: flex; flex-wrap: wrap; gap: 7px; }

.layout-post {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 48px;
  padding: 42px 0 72px;
}
@media (min-width: 1180px) {
  .layout-post { grid-template-columns: minmax(0, var(--readw)) 232px; justify-content: center; }
}

.toc {
  display: none;
  position: sticky;
  top: 92px;
  align-self: start;
  max-height: calc(100vh - 130px);
  overflow-y: auto;
  font-size: 13.5px;
  border-left: 2px solid var(--border);
  padding-left: 18px;
}
@media (min-width: 1180px) { .toc { display: block; } }

.toc__title {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--text-mute);
  font-weight: 650;
  margin-bottom: 12px;
}
.toc ul { list-style: none; margin: 0; padding: 0; }
.toc li { margin: 0 0 2px; }
.toc a {
  display: block;
  padding: 4px 0;
  color: var(--text-soft);
  line-height: 1.5;
  border-left: 2px solid transparent;
  margin-left: -20px;
  padding-left: 18px;
}
.toc a:hover { color: var(--accent); }
.toc a.is-active { color: var(--accent); font-weight: 600; border-left-color: var(--accent); }
.toc ul ul { padding-left: 12px; }
.toc ul ul a { font-size: 12.8px; }

/* ---------- 正文排版 ---------- */
.prose {
  max-width: var(--readw);
  font-size: 16.8px;
  line-height: 1.85;
  color: var(--text);
  overflow-wrap: break-word;
}

.prose > *:first-child { margin-top: 0; }

.prose h1, .prose h2, .prose h3, .prose h4, .prose h5 {
  letter-spacing: -.018em;
  line-height: 1.35;
  font-weight: 680;
  scroll-margin-top: 88px;
}
.prose h2 {
  font-size: 1.5em;
  margin: 2.2em 0 .85em;
  padding-bottom: .4em;
  border-bottom: 1px solid var(--border-soft);
}
.prose h3 { font-size: 1.22em; margin: 1.9em 0 .7em; }
.prose h4 { font-size: 1.07em; margin: 1.6em 0 .6em; }

.prose p { margin: 0 0 1.15em; }

.prose ul, .prose ol { margin: 0 0 1.15em; padding-left: 1.5em; }
.prose li { margin: .4em 0; }
.prose li > ul, .prose li > ol { margin: .4em 0; }

.prose strong { font-weight: 660; }

.prose hr { border: 0; border-top: 1px solid var(--border); margin: 2.4em 0; }

.prose blockquote {
  margin: 1.5em 0;
  padding: .3em 0 .3em 1.15em;
  border-left: 3px solid var(--accent-line);
  color: var(--text-soft);
  background: linear-gradient(90deg, var(--accent-soft), transparent 70%);
  border-radius: 0 8px 8px 0;
}
.prose blockquote p:last-child { margin-bottom: 0; }

.prose a { border-bottom: 1px solid var(--accent-line); padding-bottom: 1px; }
.prose a:hover { border-bottom-color: var(--accent); }

/* 行内代码 */
.prose code {
  font-family: var(--mono);
  font-size: .875em;
  background: var(--bg-code);
  border: 1px solid var(--border-soft);
  padding: .12em .4em;
  border-radius: 5px;
  word-break: break-word;
}

/* 代码块 */
.codehilite, .prose pre {
  position: relative;
  margin: 1.5em 0;
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}
.prose pre {
  padding: 16px 18px;
  overflow-x: auto;
  font-size: 13.8px;
  line-height: 1.7;
}
.codehilite pre { margin: 0; border: 0; border-radius: 0; background: transparent; }
.codehilite { padding: 16px 18px; }
.codehilite pre, .prose pre code {
  background: transparent;
  border: 0;
  padding: 0;
  font-family: var(--mono);
  font-size: 13.8px;
}
.prose pre code { white-space: pre; }

.copy-btn {
  position: absolute;
  top: 8px; right: 8px;
  font-size: 11.5px;
  font-family: var(--sans);
  padding: 4px 9px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text-mute);
  cursor: pointer;
  opacity: 0;
  transition: opacity .16s ease, color .16s, border-color .16s;
}
.codehilite:hover .copy-btn, .prose pre:hover .copy-btn { opacity: 1; }
.copy-btn:hover { color: var(--accent); border-color: var(--accent-line); }
.copy-btn.is-done { color: #16a34a; border-color: #16a34a; opacity: 1; }

/* 表格 */
.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: 14.5px;
  display: block;
  overflow-x: auto;
  white-space: nowrap;
}
.prose th, .prose td {
  border: 1px solid var(--border);
  padding: 9px 13px;
  text-align: left;
  vertical-align: top;
}
.prose th { background: var(--bg-soft); font-weight: 620; white-space: nowrap; }
.prose tbody tr:nth-child(even) { background: color-mix(in srgb, var(--bg-soft) 55%, transparent); }

/* 图片 */
.prose img {
  display: block;
  margin: 1.6em auto;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-soft);
}

/* 任务列表 */
.prose input[type="checkbox"] { margin-right: 6px; }

/* 文章底部 */
.article-foot {
  max-width: var(--readw);
  margin-top: 56px;
  padding-top: 26px;
  border-top: 1px solid var(--border-soft);
}
.article-foot__label { font-size: 13px; color: var(--text-mute); margin-bottom: 10px; }

.post-nav {
  max-width: var(--readw);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 26px;
}
.post-nav a {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 15px 18px;
  color: var(--text);
  background: var(--bg-elev);
  transition: border-color .16s, transform .16s;
}
.post-nav a:hover { border-color: var(--accent-line); transform: translateY(-1px); color: var(--text); }
.post-nav .dir { font-size: 12px; color: var(--text-mute); display: block; margin-bottom: 4px; }
.post-nav .ttl { font-size: 14.5px; font-weight: 560; line-height: 1.5; }
.post-nav .empty { border: 1px dashed var(--border); border-radius: var(--radius); opacity: .5; }

/* 阅读进度条 */
.progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0;
  background: linear-gradient(90deg, #2f6df6, #7c3aed, #db2777);
  z-index: 100;
  transition: width .08s linear;
}

/* ---------- 页面（归档 / 标签 / 关于） ---------- */
.page-head {
  padding: 56px 0 32px;
  border-bottom: 1px solid var(--border-soft);
}
.page-head h1 {
  font-size: clamp(1.7rem, 4vw, 2.25rem);
  margin: 0 0 10px;
  letter-spacing: -.024em;
  font-weight: 720;
}
.page-head p { margin: 0; color: var(--text-soft); max-width: 660px; }

/* 归档 */
.archive-year {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-mute);
  letter-spacing: .08em;
  margin: 34px 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-soft);
  font-variant-numeric: tabular-nums;
}
.archive-year:first-child { margin-top: 0; }

.archive-item {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 9px 0;
  color: var(--text);
}
.archive-item:hover { color: var(--accent); }
.archive-item time {
  flex: 0 0 84px;
  font-size: 13.5px;
  color: var(--text-mute);
  font-variant-numeric: tabular-nums;
}
.archive-item .ttl { font-size: 15.5px; }
.archive-item .arrow { margin-left: auto; color: var(--text-mute); opacity: 0; transition: opacity .16s; }
.archive-item:hover .arrow { opacity: 1; }

/* 标签统计卡 */
.tag-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 14px;
}
.tag-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  background: var(--bg-elev);
  color: var(--text);
  transition: transform .16s, border-color .16s, box-shadow .16s;
}
.tag-card:hover { transform: translateY(-2px); border-color: var(--accent-line); box-shadow: var(--shadow-md); color: var(--text); }
.tag-card__name { font-size: 16px; font-weight: 620; display: flex; align-items: center; gap: 8px; }
.tag-card__name::before { content: "#"; color: var(--accent); font-weight: 700; }
.tag-card__count { font-size: 12.5px; color: var(--text-mute); margin-top: 6px; }
.tag-card__preview { font-size: 13px; color: var(--text-soft); margin-top: 10px; line-height: 1.6;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ---------- 404 ---------- */
.nf { text-align: center; padding: 100px 0 120px; }
.nf__code { font-size: 84px; font-weight: 800; letter-spacing: -.05em;
  background: linear-gradient(135deg, #2f6df6, #7c3aed); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.nf p { color: var(--text-soft); margin: 8px 0 26px; }

/* ---------- 搜索 ---------- */
.search-dialog {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0;
  width: min(620px, calc(100vw - 32px));
  background: var(--bg-elev);
  color: var(--text);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
.search-dialog::backdrop { background: rgba(10,14,20,.42); backdrop-filter: blur(3px); }
.search-dialog__input {
  width: 100%;
  border: 0;
  border-bottom: 1px solid var(--border-soft);
  padding: 16px 18px;
  font-size: 16px;
  background: transparent;
  color: var(--text);
  outline: none;
  font-family: var(--sans);
}
.search-dialog__results { max-height: 60vh; overflow-y: auto; padding: 8px; }
.search-hit {
  display: block;
  padding: 11px 13px;
  border-radius: var(--radius-sm);
  color: var(--text);
}
.search-hit:hover, .search-hit.is-active { background: var(--accent-soft); color: var(--text); }
.search-hit__title { font-size: 14.5px; font-weight: 560; }
.search-hit__meta { font-size: 12.5px; color: var(--text-mute); margin-top: 3px; }
.search-empty { padding: 26px; text-align: center; color: var(--text-mute); font-size: 14px; }

/* ---------- 页脚 ---------- */
.site-footer {
  border-top: 1px solid var(--border-soft);
  background: var(--bg-soft);
  padding: 44px 0 34px;
  margin-top: 40px;
}
.site-footer__grid {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  justify-content: space-between;
  align-items: flex-start;
}
.site-footer h4 { margin: 0 0 10px; font-size: 14px; font-weight: 650; }
.site-footer p { margin: 0; font-size: 13.5px; color: var(--text-mute); max-width: 420px; line-height: 1.7; }
.site-footer__links { display: flex; flex-direction: column; gap: 7px; font-size: 13.5px; }
.site-footer__links a { color: var(--text-soft); }
.site-footer__links a:hover { color: var(--accent); }
.site-footer__bottom {
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-size: 12.5px;
  color: var(--text-mute);
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: space-between;
}

/* ---------- 通用 ---------- */
.empty-state {
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
  color: var(--text-mute);
  font-size: 14.5px;
}

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

/* ---------- 响应式 ---------- */
@media (max-width: 820px) {
  .site-header__inner { height: 56px; gap: 12px; }
  .brand__text small { display: none; }
  .site-nav {
    position: fixed;
    inset: 56px 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg-elev);
    border-bottom: 1px solid var(--border);
    padding: 8px 16px 16px;
    margin: 0;
    display: none;
    box-shadow: var(--shadow-md);
  }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 12px 10px; border-radius: var(--radius-sm); font-size: 15px; }
  .nav-toggle { display: grid; }
  .hero { padding: 48px 0 40px; }
  .section { padding: 40px 0; }
  .post-card { padding: 18px 18px; }
  .article-head { padding: 34px 0 24px; }
  .layout-post { padding: 28px 0 54px; }
  .prose { font-size: 16.2px; }
  .post-nav { grid-template-columns: 1fr; }
  .archive-item { gap: 10px; }
  .archive-item time { flex: 0 0 68px; font-size: 12.5px; }
  .hero__stats { gap: 22px; }
  .stat__num { font-size: 20px; }
}

@media print {
  .site-header, .site-footer, .toc, .post-nav, .copy-btn, .progress { display: none !important; }
  .prose { max-width: none; font-size: 11.5pt; }
  a { color: #000; }
}


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