/* ==========================================================================
   张虎军个人网站 · 设计系统
   风格：米白纸感 + 深墨绿主色 + 暖橙点缀（健康科普口径）
   ========================================================================== */

/* ---------- 1. Design tokens ---------- */
:root {
  /* 底色：米白纸感 */
  --paper:      #FBF8F3;
  --paper-2:    #F4EFE6;
  --paper-3:    #EDE6D9;
  --card:       #FFFFFF;

  /* 文字：深墨绿近黑 */
  --ink:        #16221D;
  --ink-2:      #2C3B34;
  --muted:      #6E7D75;
  --muted-2:    #93A099;

  /* 主色：深墨绿 */
  --green:      #1F4D3D;
  --green-2:    #2F6A55;
  --green-3:    #4A8A72;
  --green-soft: #E4EDE7;

  /* 点缀：暖橙（警示/强调） */
  --accent:      #C0703C;
  --accent-soft: #F7EDE4;

  --line:       #E3DCCF;
  --line-2:     #D3C9B7;

  /* 字体 */
  --serif: "Songti SC", "Noto Serif SC", "Source Han Serif SC", Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;

  /* 尺寸 */
  --wrap: 1120px;
  --read: 720px;
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 22px;

  /* 阴影 */
  --shadow-1: 0 1px 2px rgba(22, 34, 29, .04), 0 6px 18px -10px rgba(22, 34, 29, .14);
  --shadow-2: 0 2px 4px rgba(22, 34, 29, .05), 0 18px 40px -18px rgba(22, 34, 29, .22);
}

/* ---------- 2. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* 纸纹：极淡的斜纹叠层，避免纯色发闷 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: .5;
  background-image:
    repeating-linear-gradient(45deg, rgba(31, 77, 61, .014) 0 1px, transparent 1px 5px);
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--green-2); text-decoration: none; }
a:hover { color: var(--accent); }

button { font: inherit; cursor: pointer; }

:focus-visible {
  outline: 2px solid var(--green-2);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection { background: var(--green-soft); color: var(--ink); }

/* ---------- 3. Layout ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: 24px;
  position: relative;
  z-index: 1;
}

.section { padding: 64px 0; }
.section--tight { padding: 40px 0; }
.section--paper2 { background: var(--paper-2); }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--green);
  color: #fff;
  padding: 10px 16px;
  z-index: 99;
}
.skip-link:focus { left: 12px; top: 12px; }

/* ---------- 4. Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 248, 243, .88);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 68px;
}

.brand { display: flex; align-items: center; gap: 11px; color: var(--ink); }
.brand:hover { color: var(--ink); }

.brand__mark {
  width: 38px;
  height: 38px;
  flex: none;
  border-radius: 11px;
  background: linear-gradient(160deg, var(--green-2), var(--green));
  color: #fff;
  font-family: var(--serif);
  font-size: 19px;
  display: grid;
  place-items: center;
  letter-spacing: 0;
  box-shadow: var(--shadow-1);
}

.brand__text { display: flex; flex-direction: column; line-height: 1.25; }
.brand__name { font-family: var(--serif); font-size: 18px; font-weight: 700; }
.brand__sub { font-size: 11.5px; color: var(--muted); letter-spacing: .06em; }

/* 页头小圆标换成照片 */
img.brand__mark--photo {
  padding: 0;
  object-fit: cover;
  object-position: 50% 22%;
  background: var(--green-soft);
}

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 14.5px;
  color: var(--ink-2);
  transition: background .18s, color .18s;
}
.nav a:hover { background: var(--green-soft); color: var(--green); }
.nav a[aria-current="page"] {
  background: var(--green);
  color: #fff;
  font-weight: 500;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line-2);
  background: var(--card);
  border-radius: 10px;
  padding: 8px 10px;
  color: var(--ink-2);
  line-height: 0;
}

/* ---------- 5. Hero ---------- */
.hero { padding: 72px 0 56px; position: relative; overflow: hidden; }

.hero__glow {
  position: absolute;
  right: -160px;
  top: -120px;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(47, 106, 85, .13), transparent 68%);
  pointer-events: none;
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, .65fr);
  gap: 48px;
  align-items: center;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--green-2);
  background: var(--green-soft);
  border: 1px solid rgba(47, 106, 85, .16);
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 20px;
}
.hero__eyebrow::before {
  content: "";
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--green-2);
}

.hero h1 {
  font-family: var(--serif);
  font-size: clamp(30px, 4.4vw, 46px);
  line-height: 1.28;
  margin: 0 0 18px;
  letter-spacing: -.01em;
}
.hero h1 em {
  font-style: normal;
  color: var(--green);
  box-shadow: inset 0 -.42em 0 var(--green-soft);
}

.hero__lead {
  font-size: 17px;
  color: var(--ink-2);
  max-width: 40em;
  margin: 0 0 26px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 999px;
  font-size: 15px;
  border: 1px solid transparent;
  transition: transform .16s, box-shadow .16s, background .16s, color .16s;
}
.btn:active { transform: translateY(1px); }
.btn--primary {
  background: var(--green);
  color: #fff;
  box-shadow: var(--shadow-1);
}
.btn--primary:hover { background: var(--green-2); color: #fff; box-shadow: var(--shadow-2); }
.btn--ghost {
  background: var(--card);
  border-color: var(--line-2);
  color: var(--ink-2);
}
.btn--ghost:hover { border-color: var(--green-2); color: var(--green); }

.hero__card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--shadow-2);
}
.avatar {
  width: 88px; height: 88px;
  border-radius: 50%;
  background: linear-gradient(160deg, var(--green-3), var(--green));
  color: #fff;
  font-family: var(--serif);
  font-size: 34px;
  display: grid;
  place-items: center;
  margin-bottom: 16px;
  border: 3px solid var(--green-soft);
}

/* 头像位放真人照片 */
img.avatar--photo {
  display: block;
  object-fit: cover;
  object-position: 50% 18%;
  background: var(--green-soft);
  box-shadow: 0 4px 14px -6px rgba(22, 34, 29, .3);
}

/* 关于我页的竖版肖像 */
.portrait {
  margin: 0 0 4px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--paper-2);
}
.portrait img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  object-position: 50% 30%;
  border-radius: var(--radius-sm);
}
.portrait figcaption {
  font-size: 12px;
  color: var(--muted);
  text-align: center;
  padding: 8px 4px 2px;
  letter-spacing: .02em;
}
.hero__card h2 {
  font-family: var(--serif);
  font-size: 21px;
  margin: 0 0 4px;
}
.hero__card .role {
  font-size: 13px;
  color: var(--muted);
  margin: 0 0 16px;
}
.hero__facts { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; }
.hero__facts li {
  display: flex;
  gap: 10px;
  font-size: 13.5px;
  color: var(--ink-2);
  padding-top: 9px;
  border-top: 1px dashed var(--line);
}
.hero__facts li:first-child { border-top: 0; padding-top: 0; }
.hero__facts b { color: var(--green); font-weight: 600; flex: none; min-width: 4.5em; }

/* ---------- 6. Stats ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.stats__item {
  background: var(--card);
  padding: 20px 18px;
  text-align: center;
}
.stats__num {
  font-family: var(--serif);
  font-size: 30px;
  color: var(--green);
  line-height: 1.1;
}
.stats__label { font-size: 12.5px; color: var(--muted); letter-spacing: .04em; }

/* ---------- 7. Section heading ---------- */
.sec-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}
.sec-head__title {
  font-family: var(--serif);
  font-size: clamp(22px, 2.6vw, 28px);
  margin: 0;
  position: relative;
  padding-left: 16px;
}
.sec-head__title::before {
  content: "";
  position: absolute;
  left: 0; top: .18em; bottom: .18em;
  width: 5px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--green-2), var(--green-3));
}
.sec-head__desc { font-size: 14px; color: var(--muted); margin: 6px 0 0 16px; }
.sec-head__more { font-size: 14px; white-space: nowrap; }
.sec-head__more::after { content: " →"; }

/* ---------- 8. Cards ---------- */
.grid { display: grid; gap: 22px; }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-2);
  border-color: var(--line-2);
}

.card__media {
  aspect-ratio: 3 / 2;
  background:
    linear-gradient(150deg, var(--green-soft), var(--paper-3));
  position: relative;
  overflow: hidden;
}
.card__media img { width: 100%; height: 100%; object-fit: cover; }
.card__media--placeholder {
  display: grid;
  place-items: center;
  font-family: var(--serif);
  font-size: 30px;
  color: rgba(31, 77, 61, .28);
}

.card__body { padding: 20px; display: flex; flex-direction: column; gap: 10px; flex: 1; }

.card__meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: .03em;
}
.dot { width: 3px; height: 3px; border-radius: 50%; background: var(--line-2); }

.card__title {
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.45;
  margin: 0;
}
.card__title a { color: var(--ink); }
.card__title a:hover { color: var(--green); }

.card__excerpt {
  font-size: 14px;
  color: var(--muted);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__foot {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 12.5px;
  color: var(--muted);
}

/* 标签 */
.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag {
  display: inline-block;
  font-size: 11.5px;
  line-height: 1.7;
  padding: 1px 9px;
  border-radius: 999px;
  background: var(--green-soft);
  color: var(--green);
  border: 1px solid rgba(47, 106, 85, .14);
  white-space: nowrap;
}
.tag--accent { background: var(--accent-soft); color: var(--accent); border-color: rgba(192, 112, 60, .18); }
.tag--plain { background: var(--paper-2); color: var(--muted); border-color: var(--line); }

/* 列表型条目（读书笔记） */
.note-item {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 20px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  transition: transform .2s, box-shadow .2s, border-color .2s;
}
.note-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-2); border-color: var(--line-2); }
.note-item__cover {
  width: 88px;
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-sm);
  background: linear-gradient(155deg, var(--paper-3), var(--green-soft));
  display: grid;
  place-items: center;
  font-family: var(--serif);
  font-size: 26px;
  color: rgba(31, 77, 61, .35);
  overflow: hidden;
}
.note-item__cover img { width: 100%; height: 100%; object-fit: cover; }
.note-item__body { display: flex; flex-direction: column; gap: 8px; min-width: 0; }
.note-item__title { font-family: var(--serif); font-size: 19px; margin: 0; line-height: 1.4; }
.note-item__title a { color: var(--ink); }
.note-item__title a:hover { color: var(--green); }
.note-item__by { font-size: 13px; color: var(--muted); margin: 0; }
.note-item__excerpt { font-size: 14px; color: var(--ink-2); margin: 0; }
.note-item__foot {
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 12.5px;
  color: var(--muted);
}

.rating { color: var(--accent); letter-spacing: .12em; font-size: 13px; }

/* ---------- 9. Filter bar ---------- */
.filterbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 26px;
}
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  padding: 7px 15px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--line-2);
  color: var(--ink-2);
  font-size: 13.5px;
  transition: all .16s;
}
.chip:hover { border-color: var(--green-2); color: var(--green); }
.chip[aria-pressed="true"] {
  background: var(--green);
  border-color: var(--green);
  color: #fff;
}
.search {
  margin-left: auto;
  position: relative;
  min-width: 220px;
  flex: 1 1 200px;
  max-width: 300px;
}
.search input {
  width: 100%;
  padding: 9px 14px 9px 36px;
  border-radius: 999px;
  border: 1px solid var(--line-2);
  background: var(--card);
  font-size: 14px;
  font-family: inherit;
  color: var(--ink);
}
.search input:focus { outline: none; border-color: var(--green-2); box-shadow: 0 0 0 3px rgba(47, 106, 85, .12); }
.search svg { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); opacity: .45; }

.empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--muted);
  font-size: 15px;
  border: 1px dashed var(--line-2);
  border-radius: var(--radius);
  background: var(--card);
}

/* ---------- 10. Page header ---------- */
.page-head {
  padding: 46px 0 34px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, var(--paper-2), var(--paper));
}
.page-head h1 {
  font-family: var(--serif);
  font-size: clamp(26px, 3.4vw, 36px);
  margin: 0 0 10px;
}
.page-head p { color: var(--muted); margin: 0; font-size: 15px; max-width: 46em; }

.breadcrumb { font-size: 13px; color: var(--muted); margin-bottom: 14px; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--green-2); }

/* ---------- 11. Article reading page ---------- */
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, var(--read)) 260px;
  gap: 56px;
  justify-content: center;
  align-items: start;
  padding: 44px 0 72px;
}
.article-head { margin-bottom: 32px; }
.article-head h1 {
  font-family: var(--serif);
  font-size: clamp(26px, 3.6vw, 36px);
  line-height: 1.36;
  margin: 0 0 16px;
  letter-spacing: -.01em;
}
.article-head__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--muted);
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.prose {
  font-size: 17px;
  line-height: 1.95;
  color: var(--ink-2);
  word-wrap: break-word;
}
.prose > * + * { margin-top: 1.15em; }
.prose p { margin: 0; }
.prose h2, .prose h3, .prose h4 {
  font-family: var(--serif);
  color: var(--ink);
  line-height: 1.45;
  margin-top: 1.9em;
  margin-bottom: .6em;
}
.prose h2 {
  font-size: 21px;
  padding-left: 13px;
  position: relative;
}
.prose h2::before {
  content: "";
  position: absolute;
  left: 0; top: .22em; bottom: .22em;
  width: 4px; border-radius: 2px;
  background: var(--green-2);
}
.prose h3 { font-size: 18.5px; color: var(--green); }
.prose strong { color: var(--ink); font-weight: 600; }
.prose blockquote {
  margin: 1.4em 0;
  padding: 14px 20px;
  border-left: 3px solid var(--green-3);
  background: var(--green-soft);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--ink-2);
  font-size: 15.5px;
}
.prose ul, .prose ol { padding-left: 1.4em; }
.prose li + li { margin-top: .45em; }
.prose img { border-radius: var(--radius-sm); margin: 1.6em auto; }
.prose hr { border: 0; border-top: 1px dashed var(--line-2); margin: 2em 0; }
.prose table { width: 100%; border-collapse: collapse; font-size: 15px; }
.prose th, .prose td { border: 1px solid var(--line); padding: 9px 12px; text-align: left; }
.prose th { background: var(--paper-2); font-weight: 600; color: var(--ink); }
.prose code {
  background: var(--paper-2);
  padding: .12em .38em;
  border-radius: 4px;
  font-size: .9em;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}
.prose a { border-bottom: 1px solid rgba(47, 106, 85, .35); }

/* 免责声明 */
.disclaimer {
  margin-top: 40px;
  padding: 18px 20px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
}
.disclaimer strong { color: var(--ink-2); display: block; margin-bottom: 4px; }
.signature {
  margin-top: 26px;
  font-size: 14px;
  color: var(--muted);
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

/* 侧栏 */
.aside { position: sticky; top: 92px; display: grid; gap: 18px; }
.aside__box {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
}
.aside__box h3 {
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--muted);
  margin: 0 0 12px;
  font-weight: 600;
  font-family: var(--sans);
}
.toc { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.toc a {
  display: block;
  font-size: 13.5px;
  color: var(--ink-2);
  padding: 5px 9px;
  border-radius: 6px;
  border-left: 2px solid transparent;
  line-height: 1.5;
}
.toc a:hover, .toc a.is-active {
  background: var(--green-soft);
  color: var(--green);
  border-left-color: var(--green-2);
}
.toc li[data-level="3"] a { padding-left: 20px; font-size: 13px; color: var(--muted); }

.meta-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; font-size: 13.5px; }
.meta-list li { display: flex; gap: 10px; }
.meta-list b { color: var(--muted); font-weight: 400; flex: none; min-width: 3.6em; }
.meta-list span { color: var(--ink-2); }

/* 上一篇 / 下一篇 */
.postnav {
  margin-top: 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.postnav a {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
  display: grid;
  gap: 5px;
  transition: border-color .18s, transform .18s;
}
.postnav a:hover { border-color: var(--green-2); transform: translateY(-2px); }
.postnav .dir { font-size: 12px; color: var(--muted); }
.postnav .ttl { font-family: var(--serif); font-size: 15.5px; color: var(--ink); line-height: 1.5; }
.postnav a.is-next { text-align: right; }

/* ---------- 12. 读书笔记（纸张 / 丝带） ---------- */
.note-paper {
  background:
    linear-gradient(180deg, #FDFAF5 0%, #FAF5EC 100%);
  border: 1px solid var(--line);
  border-radius: 4px;
  box-shadow: var(--shadow-2);
  padding: 54px 56px 46px;
  position: relative;
  background-image:
    linear-gradient(180deg, #FDFAF5 0%, #FAF5EC 100%),
    repeating-linear-gradient(0deg, transparent 0 27px, rgba(31, 77, 61, .045) 27px 28px);
  background-blend-mode: normal, multiply;
}
.note-paper::after {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--green-2), var(--green-3));
  border-radius: 4px 0 0 4px;
}

.ribbon {
  position: absolute;
  top: -12px;
  right: 46px;
  width: 46px;
  height: 78px;
  background: linear-gradient(180deg, var(--green-2), var(--green));
  color: #fff;
  font-family: var(--serif);
  font-size: 13px;
  writing-mode: vertical-rl;
  letter-spacing: .16em;
  display: grid;
  place-items: center;
  padding: 10px 0;
  box-shadow: var(--shadow-1);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 50% 84%, 0 100%);
  z-index: 2;
}

.note-head { text-align: center; margin-bottom: 34px; }
.note-head__kicker {
  font-size: 12px;
  letter-spacing: .3em;
  color: var(--green-3);
  margin: 0 0 14px;
  text-transform: uppercase;
}
.note-head h1 {
  font-family: var(--serif);
  font-size: clamp(25px, 3.4vw, 34px);
  line-height: 1.4;
  margin: 0 0 10px;
  letter-spacing: .01em;
}
.note-head__by { font-size: 14px; color: var(--muted); margin: 0 0 6px; }
.note-head__rate { color: var(--accent); letter-spacing: .16em; margin: 0; font-size: 14px; }
.note-head__rule {
  width: 60px;
  height: 1px;
  background: var(--line-2);
  margin: 22px auto 0;
  position: relative;
}
.note-head__rule::after {
  content: "◆";
  position: absolute;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  font-size: 8px;
  color: var(--line-2);
  background: #FBF7EF;
  padding: 0 6px;
}

.note-paper .prose { font-size: 16.5px; line-height: 2.05; color: #2F3A34; }
.note-paper .prose h2 { font-size: 20px; }
.note-paper .prose blockquote {
  background: rgba(31, 77, 61, .05);
  border-left-color: var(--green-3);
  font-family: var(--serif);
}
.pull-quote {
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.85;
  color: var(--green);
  text-align: center;
  padding: 8px 0 8px 0;
  margin: 1.8em 0 !important;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

/* ---------- 13. About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 48px;
  align-items: start;
}
.timeline { list-style: none; margin: 0; padding: 0; position: relative; }
.timeline::before {
  content: "";
  position: absolute;
  left: 7px; top: 8px; bottom: 8px;
  width: 1px;
  background: var(--line-2);
}
.timeline li {
  position: relative;
  padding: 0 0 22px 30px;
}
.timeline li::before {
  content: "";
  position: absolute;
  left: 0; top: 8px;
  width: 15px; height: 15px;
  border-radius: 50%;
  background: var(--card);
  border: 3px solid var(--green-3);
}
.timeline .yr { font-size: 12.5px; color: var(--green-2); letter-spacing: .06em; }
.timeline .what { font-size: 15.5px; color: var(--ink-2); margin-top: 2px; }

.skill-row { display: flex; flex-wrap: wrap; gap: 8px; }

.info-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  display: grid;
  gap: 14px;
}
.info-card h3 { font-family: var(--serif); font-size: 17px; margin: 0; }
.info-card dl { margin: 0; display: grid; gap: 10px; }
.info-card dt { font-size: 12px; color: var(--muted); letter-spacing: .04em; }
.info-card dd { margin: 2px 0 0; font-size: 14.5px; color: var(--ink-2); }

.qr-slot {
  aspect-ratio: 1;
  max-width: 160px;
  margin: 0 auto;
  border: 1px dashed var(--line-2);
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  text-align: center;
  font-size: 12.5px;
  color: var(--muted);
  background: var(--paper-2);
  padding: 12px;
}

/* ---------- 14. Footer ---------- */
.site-footer {
  margin-top: 60px;
  background: var(--green);
  color: rgba(255, 255, 255, .74);
  padding: 46px 0 34px;
  position: relative;
  z-index: 1;
}
.site-footer a { color: #fff; }
.site-footer a:hover { color: #EBD3B8; }
.site-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 34px;
  padding-bottom: 28px;
  border-bottom: 1px solid rgba(255, 255, 255, .16);
}
.site-footer h4 {
  font-size: 13px;
  letter-spacing: .08em;
  color: #fff;
  margin: 0 0 14px;
  font-weight: 600;
}
.site-footer p { font-size: 13.5px; line-height: 1.85; margin: 0; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; font-size: 13.5px; }
.site-footer__bottom {
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 12.5px;
  color: rgba(255, 255, 255, .6);
}

/* ---------- 15. Back to top ---------- */
.to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--green);
  color: #fff;
  border: 0;
  display: grid;
  place-items: center;
  box-shadow: var(--shadow-2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity .22s, transform .22s, visibility .22s;
  z-index: 40;
}
.to-top.is-on { opacity: 1; visibility: visible; transform: none; }

/* 阅读进度 */
.progress {
  position: fixed;
  left: 0; top: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--green-2), var(--accent));
  width: 0;
  z-index: 60;
  transition: width .1s linear;
}

/* ---------- 16. 微信文章原文残留样式清洗兜底 ---------- */
.prose [style*="text-align: center"], .prose [style*="text-align:center"] { text-align: center; }
.prose section { margin: 0; }
.prose img[data-src] { background: var(--paper-2); }
.prose span { font-size: inherit; }

/* ---------- 17. Responsive ---------- */
@media (max-width: 1000px) {
  .hero__grid { grid-template-columns: 1fr; gap: 34px; }
  .article-layout { grid-template-columns: minmax(0, 1fr); gap: 34px; padding-inline: 0; }
  .aside { position: static; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); display: grid; }
  .about-grid { grid-template-columns: 1fr; gap: 34px; }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .site-footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  html { scroll-padding-top: 72px; }
  .wrap { padding-inline: 18px; }
  .section { padding: 44px 0; }
  .hero { padding: 44px 0 36px; }
  .grid--3, .grid--2 { grid-template-columns: minmax(0, 1fr); }
  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 12px 18px 18px;
    display: none;
    box-shadow: var(--shadow-1);
  }
  .nav.is-open { display: flex; }
  .nav a { padding: 11px 14px; border-radius: 10px; }
  .nav-toggle { display: inline-flex; }
  .note-item { grid-template-columns: 64px minmax(0, 1fr); gap: 14px; padding: 16px; }
  .note-item__cover { width: 64px; }
  .note-paper { padding: 38px 22px 32px; }
  .ribbon { right: 18px; width: 38px; height: 64px; font-size: 11.5px; }
  .postnav { grid-template-columns: 1fr; }
  .postnav a.is-next { text-align: left; }
  .site-footer__grid { grid-template-columns: 1fr; gap: 24px; }
  .search { margin-left: 0; max-width: none; }
  .hero__card { padding: 20px; }
  .page-head { padding: 30px 0 24px; }
  .article-layout { padding: 28px 0 52px; }
}

@media print {
  .site-header, .site-footer, .aside, .to-top, .progress, .postnav { display: none !important; }
  body { background: #fff; }
  .note-paper { box-shadow: none; }
}