/* ==========================================================================
   杂谈 · 站点样式
   编辑部风格：纸感底色 + 宋体标题 + 朱红点缀
   ========================================================================== */

:root {
  --paper:      #fbf9f5;
  --paper-2:    #f4f0e7;
  --paper-3:    #ece6d9;
  --card:       #ffffff;
  --ink:        #1b1917;
  --ink-2:      #45403a;
  --ink-3:      #6b6459;
  --muted:      #928b7e;
  --line:       #e5ded0;
  --line-2:     #d8cfbd;
  --accent:     #b4462c;
  --accent-ink: #8f3420;
  --accent-bg:  #f7e8e2;
  --shadow-sm:  0 1px 2px rgba(40, 32, 22, .05);
  --shadow-md:  0 6px 24px -10px rgba(40, 32, 22, .18);
  --shadow-lg:  0 18px 48px -20px rgba(40, 32, 22, .28);

  --font-serif: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC", "SimSun", Georgia, serif;
  --font-sans:  -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
                "Microsoft YaHei", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono:  ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --wrap: 1080px;
  --wrap-narrow: 720px;
  --radius: 14px;
  --radius-sm: 9px;
}

[data-theme="dark"] {
  --paper:      #16151a;
  --paper-2:    #1d1c22;
  --paper-3:    #26242c;
  --card:       #1f1e25;
  --ink:        #ede9e2;
  --ink-2:      #c2bcb2;
  --ink-3:      #9b948a;
  --muted:      #7d766c;
  --line:       #2f2d36;
  --line-2:     #3a3742;
  --accent:     #e2725a;
  --accent-ink: #f0927c;
  --accent-bg:  #33211d;
  --shadow-sm:  0 1px 2px rgba(0, 0, 0, .4);
  --shadow-md:  0 6px 24px -10px rgba(0, 0, 0, .6);
  --shadow-lg:  0 18px 48px -20px rgba(0, 0, 0, .7);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

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

/* 纸纹质感 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: .5;
  background-image:
    radial-gradient(circle at 12% 8%, rgba(180, 70, 44, .045), transparent 42%),
    radial-gradient(circle at 88% 4%, rgba(70, 110, 150, .04), transparent 40%),
    radial-gradient(circle at 50% 100%, rgba(120, 100, 60, .035), transparent 55%);
}
[data-theme="dark"] body::before { opacity: .35; }

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

::selection { background: var(--accent-bg); color: var(--accent-ink); }

/* ---------- 布局脚手架 ---------- */

.page { position: relative; z-index: 1; min-height: 100vh; display: flex; flex-direction: column; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.wrap--narrow { max-width: var(--wrap-narrow); }
.wrap--wide { max-width: 1340px; }

main { flex: 1; padding-bottom: 88px; }

/* ---------- 顶栏 ---------- */

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}

.site-header__inner {
  height: 64px;
  display: flex; align-items: center; gap: 20px;
}

.brand { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }

.brand__seal {
  width: 34px; height: 34px; border-radius: 8px;
  background: var(--accent);
  color: #fff;
  display: grid; place-items: center;
  font-family: var(--font-serif);
  font-size: 19px; font-weight: 700;
  letter-spacing: 0;
  box-shadow: var(--shadow-sm);
  transition: transform .25s cubic-bezier(.34,1.56,.64,1);
}
.brand:hover .brand__seal { transform: rotate(-6deg) scale(1.05); }

.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__name { font-family: var(--font-serif); font-size: 19px; font-weight: 700; letter-spacing: .12em; }
.brand__sub { font-size: 11px; color: var(--muted); letter-spacing: .06em; }

.nav { display: flex; align-items: center; gap: 4px; margin-left: 8px; }

.nav__link {
  padding: 7px 13px; border-radius: 999px;
  font-size: 14.5px; color: var(--ink-2);
  transition: background .18s, color .18s;
  white-space: nowrap;
}
.nav__link:hover { background: var(--paper-2); color: var(--ink); }
.nav__link.is-active { color: var(--accent-ink); background: var(--accent-bg); font-weight: 600; }

.header__spacer { flex: 1; }

.header__tools { display: flex; align-items: center; gap: 8px; }

.icon-btn {
  width: 36px; height: 36px; border-radius: 10px;
  border: 1px solid transparent; background: transparent;
  display: grid; place-items: center;
  color: var(--ink-3);
  transition: background .18s, color .18s, border-color .18s;
}
.icon-btn:hover { background: var(--paper-2); color: var(--ink); border-color: var(--line); }
.icon-btn svg { width: 18px; height: 18px; }

.header__search {
  display: flex; align-items: center; gap: 7px;
  height: 36px; padding: 0 12px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: border-color .18s, background .18s;
}
.header__search:focus-within { border-color: var(--line-2); background: var(--card); }
.header__search svg { width: 15px; height: 15px; color: var(--muted); flex-shrink: 0; }
.header__search input {
  border: 0; background: transparent; outline: none;
  font: inherit; font-size: 14px; color: var(--ink);
  width: 132px;
}
.header__search input::placeholder { color: var(--muted); }

/* 用户区 */
.user-chip {
  display: flex; align-items: center; gap: 8px;
  height: 36px; padding: 0 6px 0 6px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--card);
  transition: border-color .18s, box-shadow .18s;
}
.user-chip:hover { border-color: var(--line-2); box-shadow: var(--shadow-sm); }
.avatar {
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--accent); color: #fff;
  display: grid; place-items: center;
  font-size: 12px; font-weight: 700; flex-shrink: 0;
  font-family: var(--font-serif);
}
.user-chip__name { font-size: 13.5px; color: var(--ink-2); max-width: 84px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* 移动端菜单 */
.nav-toggle { display: none; }

@media (max-width: 860px) {
  .site-header__inner { height: 58px; gap: 12px; }
  .brand__sub { display: none; }
  .nav {
    position: fixed; inset: 58px 0 auto 0;
    flex-direction: column; align-items: stretch; gap: 2px;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    padding: 10px 16px 16px;
    margin: 0;
    transform: translateY(-8px);
    opacity: 0; pointer-events: none;
    transition: opacity .2s, transform .2s;
    box-shadow: var(--shadow-md);
  }
  .nav.is-open { opacity: 1; transform: none; pointer-events: auto; }
  .nav__link { padding: 11px 14px; border-radius: 10px; }
  .nav-toggle { display: grid; }
  .header__search { display: none; }
  .header__search.is-mobile-open {
    display: flex; position: absolute; left: 16px; right: 16px; top: 64px;
    background: var(--card); z-index: 60;
  }
  .header__search.is-mobile-open input { width: 100%; }
  .user-chip__name { display: none; }
}

/* ---------- 首页 Hero ---------- */

.hero { padding: 68px 0 44px; position: relative; }

.hero__kicker {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; letter-spacing: .22em; text-transform: uppercase;
  color: var(--accent-ink);
  margin-bottom: 18px;
}
.hero__kicker::before {
  content: ""; width: 26px; height: 1px; background: var(--accent); display: block;
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(40px, 7.4vw, 68px);
  line-height: 1.06;
  letter-spacing: .04em;
  margin: 0 0 20px;
  font-weight: 700;
}
.hero__title em { font-style: normal; color: var(--accent); }

.hero__lead {
  max-width: 620px;
  font-size: 16.5px; line-height: 1.85;
  color: var(--ink-3);
  margin: 0 0 30px;
}

.hero__stats { display: flex; flex-wrap: wrap; gap: 34px; }
.stat__num {
  font-family: var(--font-serif);
  font-size: 27px; font-weight: 700; color: var(--ink);
  line-height: 1.2;
}
.stat__label { font-size: 12.5px; color: var(--muted); letter-spacing: .1em; }

/* ---------- 分区标题 ---------- */

.section-head {
  display: flex; align-items: baseline; gap: 14px;
  margin: 8px 0 22px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.section-head__title {
  font-family: var(--font-serif);
  font-size: 21px; font-weight: 700; margin: 0; letter-spacing: .08em;
}
.section-head__hint { font-size: 13px; color: var(--muted); }
.section-head__more { margin-left: auto; font-size: 13.5px; color: var(--accent-ink); }
.section-head__more:hover { text-decoration: underline; }

/* ---------- 精选卡片 ---------- */

.feature {
  position: relative;
  display: block;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
  margin-bottom: 46px;
  transition: transform .3s cubic-bezier(.2,.7,.3,1), box-shadow .3s, border-color .3s;
}
.feature:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: var(--line-2); }

.feature__body { padding: 30px 32px 28px; }

.feature__badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 11.5px; letter-spacing: .14em;
  color: var(--accent-ink); background: var(--accent-bg);
  padding: 4px 10px; border-radius: 999px; margin-bottom: 16px;
}

.feature__title {
  font-family: var(--font-serif);
  font-size: clamp(24px, 3.4vw, 32px);
  line-height: 1.32; margin: 0 0 14px; font-weight: 700;
}
.feature__excerpt { color: var(--ink-3); font-size: 15.5px; margin: 0 0 18px; max-width: 660px; }

/* ---------- 文章列表 ---------- */

.post-list { display: flex; flex-direction: column; }

.post-item {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 24px;
  padding: 26px 4px;
  border-bottom: 1px solid var(--line);
  transition: background .2s;
  border-radius: 8px;
}
.post-item:hover { background: color-mix(in srgb, var(--paper-2) 55%, transparent); }

.post-item__date {
  font-size: 12.5px; color: var(--muted);
  font-variant-numeric: tabular-nums;
  padding-top: 6px;
  line-height: 1.5;
}
.post-item__date b { display: block; font-family: var(--font-serif); font-size: 17px; color: var(--ink-3); font-weight: 600; }

.post-item__title {
  font-family: var(--font-serif);
  font-size: 20.5px; font-weight: 700; line-height: 1.4;
  margin: 0 0 8px;
  transition: color .18s;
}
.post-item:hover .post-item__title { color: var(--accent-ink); }

.post-item__excerpt {
  color: var(--ink-3); font-size: 14.8px; line-height: 1.72;
  margin: 0 0 12px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}

.post-item__meta { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 12.5px; color: var(--muted); }

@media (max-width: 620px) {
  .post-item { grid-template-columns: 1fr; gap: 10px; padding: 22px 2px; }
  .post-item__date { padding-top: 0; display: flex; align-items: baseline; gap: 8px; }
  .post-item__date b { font-size: 13px; display: inline; }
  .hero { padding: 40px 0 30px; }
  .feature__body { padding: 22px 20px 20px; }
}

/* ---------- 标签胶囊 ---------- */

.tag {
  display: inline-flex; align-items: center;
  padding: 3px 10px; border-radius: 999px;
  font-size: 12.5px; line-height: 1.7;
  background: var(--paper-2); color: var(--ink-3);
  border: 1px solid transparent;
  transition: background .16s, color .16s, border-color .16s;
  white-space: nowrap;
}
a.tag:hover { border-color: var(--line-2); color: var(--ink); }

.tag--amber   { background: #fbf0d9; color: #8a6314; }
.tag--sky     { background: #e3f1fa; color: #1f6088; }
.tag--violet  { background: #efe9fb; color: #5c3fa6; }
.tag--emerald { background: #e2f4ec; color: #1f6b4f; }
.tag--indigo  { background: #e7eaf9; color: #3a4697; }
.tag--rose    { background: #fce9ee; color: #9b3455; }
.tag--slate   { background: var(--paper-2); color: var(--ink-3); }

[data-theme="dark"] .tag--amber   { background:#3a2f16; color:#e3c479; }
[data-theme="dark"] .tag--sky     { background:#16303f; color:#8cc6e6; }
[data-theme="dark"] .tag--violet  { background:#2a2340; color:#b8a6ee; }
[data-theme="dark"] .tag--emerald { background:#15342a; color:#8bd6b6; }
[data-theme="dark"] .tag--indigo  { background:#232741; color:#a3aeee; }
[data-theme="dark"] .tag--rose    { background:#3b1f28; color:#ef9fb8; }

.tag-row { display: flex; flex-wrap: wrap; gap: 7px; }

/* ---------- 筛选条 ---------- */

.filter-bar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  margin-bottom: 26px;
}
.chip {
  padding: 6px 14px; border-radius: 999px;
  border: 1px solid var(--line);
  background: transparent; color: var(--ink-3);
  font-size: 13.5px;
  transition: all .18s;
}
.chip:hover { border-color: var(--line-2); color: var(--ink); }
.chip.is-active { background: var(--ink); color: var(--paper); border-color: var(--ink); }

/* ---------- 文章正文 ---------- */

.article { padding-top: 44px; }

.article__back {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13.5px; color: var(--muted); margin-bottom: 26px;
}
.article__back:hover { color: var(--accent-ink); }

.article__title {
  font-family: var(--font-serif);
  font-size: clamp(29px, 4.6vw, 41px);
  line-height: 1.28; margin: 0 0 20px; font-weight: 700;
  letter-spacing: .01em;
}

.article__meta {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px;
  font-size: 13px; color: var(--muted);
  padding-bottom: 26px; margin-bottom: 34px;
  border-bottom: 1px solid var(--line);
}
.article__meta .dot { width: 3px; height: 3px; border-radius: 50%; background: var(--line-2); }

.article__toc {
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  background: var(--paper-2);
  padding: 18px 20px; margin-bottom: 34px;
}
.article__toc h4 {
  margin: 0 0 10px; font-size: 12px; letter-spacing: .18em;
  color: var(--muted); font-weight: 600; text-transform: uppercase;
}
.article__toc ol { margin: 0; padding-left: 18px; }
.article__toc li { font-size: 14px; line-height: 2; color: var(--ink-3); }
.article__toc a:hover { color: var(--accent-ink); }

.prose { font-size: 17px; line-height: 1.95; color: var(--ink-2); }
.prose > *:first-child { margin-top: 0; }

.prose h2 {
  font-family: var(--font-serif);
  font-size: 25px; font-weight: 700; color: var(--ink);
  margin: 52px 0 18px; line-height: 1.45;
  letter-spacing: .02em;
  scroll-margin-top: 84px;
}
.prose h2::before {
  content: ""; display: block;
  width: 30px; height: 3px; border-radius: 2px;
  background: var(--accent); margin-bottom: 14px;
}
.prose h3 {
  font-family: var(--font-serif);
  font-size: 20px; font-weight: 700; color: var(--ink);
  margin: 38px 0 14px; scroll-margin-top: 84px;
}
.prose p { margin: 0 0 22px; }
.prose strong { color: var(--ink); font-weight: 700; }
.prose em { font-style: italic; }
.prose a { color: var(--accent-ink); border-bottom: 1px solid color-mix(in srgb, var(--accent) 35%, transparent); }
.prose a:hover { border-bottom-color: var(--accent); }

.prose ul, .prose ol { margin: 0 0 22px; padding-left: 24px; }
.prose li { margin-bottom: 9px; }
.prose li::marker { color: var(--muted); }

.prose blockquote {
  margin: 0 0 24px;
  padding: 4px 0 4px 22px;
  border-left: 3px solid var(--accent);
  color: var(--ink-3);
  font-family: var(--font-serif);
  font-size: 17.5px;
}
.prose blockquote p:last-child { margin-bottom: 0; }

.prose hr { border: 0; border-top: 1px solid var(--line); margin: 40px 0; }

.prose code {
  font-family: var(--font-mono);
  font-size: .87em;
  background: var(--paper-2);
  border: 1px solid var(--line);
  padding: 1px 5px; border-radius: 5px;
  color: var(--accent-ink);
}
.prose pre {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 18px 20px; overflow-x: auto; margin: 0 0 24px;
  line-height: 1.7;
}
.prose pre code { background: none; border: 0; padding: 0; color: var(--ink); font-size: 13.5px; }

.prose table { width: 100%; border-collapse: collapse; margin: 0 0 24px; font-size: 15px; }
.prose th, .prose td { border: 1px solid var(--line); padding: 9px 13px; text-align: left; }
.prose th { background: var(--paper-2); font-weight: 600; color: var(--ink); }

.prose img { border-radius: var(--radius-sm); margin: 6px 0 26px; border: 1px solid var(--line); }

.media-locked {
  display: flex; align-items: center; gap: 12px;
  border: 1px dashed var(--line-2); border-radius: var(--radius-sm);
  background: var(--paper-2);
  padding: 16px 18px; margin: 0 0 26px;
  font-size: 14px; color: var(--ink-3);
}
.media-locked svg { width: 18px; height: 18px; color: var(--muted); flex-shrink: 0; }
.media-locked b { color: var(--ink-2); }

.article__foot {
  margin-top: 56px; padding-top: 30px;
  border-top: 1px solid var(--line);
}
.article__tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 26px; }

.author-card {
  display: flex; align-items: center; gap: 14px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
}
.author-card__avatar {
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--accent); color: #fff;
  display: grid; place-items: center;
  font-family: var(--font-serif); font-size: 20px; font-weight: 700;
  flex-shrink: 0;
}
.author-card__name { font-family: var(--font-serif); font-size: 16.5px; font-weight: 700; margin: 0 0 3px; }
.author-card__bio { font-size: 13.5px; color: var(--muted); margin: 0; }

.prevnext { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 26px; }
.prevnext a {
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 15px 17px; background: var(--card);
  transition: border-color .18s, transform .18s;
}
.prevnext a:hover { border-color: var(--line-2); transform: translateY(-2px); }
.prevnext span { display: block; font-size: 11.5px; color: var(--muted); letter-spacing: .1em; margin-bottom: 5px; }
.prevnext b { font-family: var(--font-serif); font-size: 15px; font-weight: 600; line-height: 1.5; }
.prevnext a.is-empty { opacity: .35; pointer-events: none; }
@media (max-width: 620px) { .prevnext { grid-template-columns: 1fr; } }

/* ---------- 标签页 ---------- */

.tag-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(248px, 1fr)); gap: 16px; }

.tag-card {
  display: block;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--card);
  padding: 22px 22px 20px;
  transition: transform .25s, box-shadow .25s, border-color .25s;
  position: relative; overflow: hidden;
}
.tag-card::after {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--tag-accent, var(--muted));
  opacity: .85;
}
.tag-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--line-2); }
.tag-card__head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; margin-bottom: 8px; }
.tag-card__name { font-family: var(--font-serif); font-size: 19px; font-weight: 700; margin: 0; }
.tag-card__count { font-size: 12.5px; color: var(--muted); font-variant-numeric: tabular-nums; }
.tag-card__desc { font-size: 14px; color: var(--ink-3); margin: 0; line-height: 1.7; }

/* 标签详情 */
.tag-hero {
  display: flex; align-items: center; gap: 18px;
  padding: 36px 0 30px;
}
.tag-hero__mark {
  width: 62px; height: 62px; border-radius: 16px;
  display: grid; place-items: center;
  font-family: var(--font-serif); font-size: 26px; font-weight: 700;
  flex-shrink: 0;
}
.tag-hero__title { font-family: var(--font-serif); font-size: 30px; font-weight: 700; margin: 0 0 6px; }
.tag-hero__desc { font-size: 14.5px; color: var(--ink-3); margin: 0; }

/* ---------- 关于页 ---------- */

.about-hero { display: flex; align-items: center; gap: 24px; padding: 52px 0 34px; }
.about-hero__avatar {
  width: 82px; height: 82px; border-radius: 24px;
  background: var(--accent); color: #fff;
  display: grid; place-items: center;
  font-family: var(--font-serif); font-size: 38px; font-weight: 700;
  flex-shrink: 0;
  box-shadow: var(--shadow-md);
}
.about-hero__name { font-family: var(--font-serif); font-size: 33px; font-weight: 700; margin: 0 0 8px; letter-spacing: .04em; }
.about-hero__line { font-size: 15.5px; color: var(--ink-3); margin: 0; }

.card {
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--card); padding: 28px 30px;
  margin-bottom: 20px;
}
.card--flush { padding: 0; overflow: hidden; }
.card__title {
  font-family: var(--font-serif); font-size: 19px; font-weight: 700;
  margin: 0 0 16px; display: flex; align-items: center; gap: 9px;
}
.card__title::before {
  content: ""; width: 3px; height: 17px; border-radius: 2px;
  background: var(--accent); display: block;
}

.kv-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 22px; }
.kv__k { font-size: 12px; letter-spacing: .12em; color: var(--muted); margin-bottom: 4px; }
.kv__v { font-size: 15px; color: var(--ink-2); }

/* ---------- 表单 / 登录 ---------- */

.auth-shell { max-width: 430px; margin: 0 auto; padding: 56px 24px 40px; }
.auth-card {
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--card); padding: 30px 30px 28px;
  box-shadow: var(--shadow-md);
}
.auth-title { font-family: var(--font-serif); font-size: 25px; font-weight: 700; margin: 0 0 6px; }
.auth-sub { font-size: 13.5px; color: var(--muted); margin: 0 0 22px; }

.tabs {
  display: flex; gap: 3px; padding: 3px;
  background: var(--paper-2); border-radius: 10px; margin-bottom: 22px;
}
.tab {
  flex: 1; border: 0; background: transparent;
  padding: 8px 6px; border-radius: 8px;
  font-size: 13.5px; color: var(--ink-3);
  transition: background .18s, color .18s, box-shadow .18s;
}
.tab.is-active { background: var(--card); color: var(--ink); box-shadow: var(--shadow-sm); font-weight: 600; }

.field { margin-bottom: 15px; }
.field label { display: block; font-size: 13px; color: var(--ink-3); margin-bottom: 6px; }
.input {
  width: 100%; height: 42px; padding: 0 13px;
  border: 1px solid var(--line); border-radius: 10px;
  background: var(--paper); color: var(--ink);
  font: inherit; font-size: 15px;
  outline: none; transition: border-color .18s, box-shadow .18s;
}
.input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-bg); }
textarea.input { height: auto; padding: 11px 13px; line-height: 1.7; resize: vertical; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  height: 42px; padding: 0 20px;
  border-radius: 10px; border: 1px solid var(--line);
  background: var(--card); color: var(--ink);
  font-size: 14.5px; font-weight: 500;
  transition: all .18s;
  white-space: nowrap;
}
.btn:hover { border-color: var(--line-2); background: var(--paper-2); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn--primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn--primary:hover { background: var(--accent-ink); border-color: var(--accent-ink); }
.btn--block { width: 100%; }
.btn--sm { height: 34px; padding: 0 13px; font-size: 13.5px; border-radius: 8px; }
.btn--danger { color: #b4232c; border-color: var(--line); }
.btn--danger:hover { background: #fdeaea; border-color: #f2c3c3; }
[data-theme="dark"] .btn--danger:hover { background: #3a1a1d; border-color: #6b2b30; }

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

.link-btn {
  border: 0; background: none; padding: 0;
  color: var(--accent-ink); font-size: 13.5px;
}
.link-btn:hover { text-decoration: underline; }

.form-hint { font-size: 12.5px; color: var(--muted); margin-top: 8px; line-height: 1.65; }

/* ---------- 提示 / 状态 ---------- */

.alert {
  border-radius: 10px; padding: 11px 14px; font-size: 13.5px;
  margin-bottom: 15px; line-height: 1.65;
  border: 1px solid transparent;
}
.alert--error   { background: #fdecec; border-color: #f6cdcd; color: #a3212a; }
.alert--ok      { background: #e9f7ef; border-color: #c4e8d4; color: #1c6b45; }
.alert--info    { background: var(--paper-2); border-color: var(--line); color: var(--ink-3); }
[data-theme="dark"] .alert--error { background:#3a1a1d; border-color:#6b2b30; color:#f0a0a6; }
[data-theme="dark"] .alert--ok    { background:#15342a; border-color:#2a5f47; color:#8bd6b6; }

.empty {
  text-align: center; padding: 60px 20px; color: var(--muted);
  font-size: 14.5px;
}
.empty__mark { font-family: var(--font-serif); font-size: 34px; color: var(--line-2); margin-bottom: 10px; }

.skeleton {
  background: linear-gradient(90deg, var(--paper-2) 25%, var(--paper-3) 37%, var(--paper-2) 63%);
  background-size: 400% 100%;
  animation: shimmer 1.4s ease-in-out infinite;
  border-radius: 6px;
}
@keyframes shimmer { 0% { background-position: 100% 50%; } 100% { background-position: 0 50%; } }
.sk-line { height: 14px; margin-bottom: 12px; }
.sk-title { height: 22px; width: 62%; margin-bottom: 14px; }

#toast-host {
  position: fixed; bottom: 26px; left: 50%; transform: translateX(-50%);
  z-index: 200; display: flex; flex-direction: column; gap: 9px; align-items: center;
  pointer-events: none;
}
.toast {
  background: var(--ink); color: var(--paper);
  padding: 11px 20px; border-radius: 999px;
  font-size: 14px; box-shadow: var(--shadow-lg);
  animation: toast-in .28s cubic-bezier(.2,.9,.3,1);
  max-width: 84vw;
}
.toast--error { background: #a3212a; color: #fff; }
.toast--ok { background: #1c6b45; color: #fff; }
@keyframes toast-in { from { opacity: 0; transform: translateY(12px) scale(.96); } to { opacity: 1; transform: none; } }

/* ---------- 写作台 ---------- */

.studio { padding-top: 40px; }
.studio__head { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; margin-bottom: 24px; }
.studio__title { font-family: var(--font-serif); font-size: 27px; font-weight: 700; margin: 0; }
.studio__grid { display: grid; grid-template-columns: 1fr; gap: 22px; }
@media (min-width: 1000px) { .studio__grid { grid-template-columns: 280px 1fr; align-items: start; } }

.editor-pane { display: grid; grid-template-columns: 1fr; gap: 0; }
@media (min-width: 1180px) { .editor-pane { grid-template-columns: 1fr 1fr; } }

.mini-list { display: flex; flex-direction: column; gap: 2px; max-height: 460px; overflow-y: auto; }
.mini-item {
  display: block; width: 100%; text-align: left;
  border: 1px solid transparent; border-radius: 9px;
  background: transparent; padding: 10px 12px;
  transition: background .16s, border-color .16s;
}
.mini-item:hover { background: var(--paper-2); }
.mini-item.is-active { background: var(--accent-bg); border-color: color-mix(in srgb, var(--accent) 25%, transparent); }
.mini-item__t { font-size: 14px; font-weight: 600; line-height: 1.5; margin-bottom: 3px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.mini-item__m { font-size: 11.5px; color: var(--muted); display: flex; gap: 8px; align-items: center; }

.pill-status {
  font-size: 10.5px; padding: 1px 7px; border-radius: 999px; letter-spacing: .04em;
}
.pill-status--published { background: #e9f7ef; color: #1c6b45; }
.pill-status--draft { background: var(--paper-3); color: var(--muted); }
[data-theme="dark"] .pill-status--published { background:#15342a; color:#8bd6b6; }

.editor-toolbar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 7px;
  padding: 10px 12px; border: 1px solid var(--line); border-bottom: 0;
  border-radius: 10px 10px 0 0; background: var(--paper-2);
}
.editor-toolbar .sep { width: 1px; height: 20px; background: var(--line-2); margin: 0 3px; }
.editor-area {
  border: 1px solid var(--line); border-radius: 0 0 10px 10px;
  background: var(--paper);
  min-height: 420px;
}
.editor-area textarea {
  width: 100%; min-height: 420px; border: 0; outline: none; resize: vertical;
  background: transparent; color: var(--ink);
  font-family: var(--font-mono); font-size: 14px; line-height: 1.85;
  padding: 18px 20px;
}
.preview-pane {
  border: 1px solid var(--line); border-radius: 10px;
  background: var(--card); padding: 26px 28px;
  min-height: 420px; overflow-y: auto;
}
.preview-pane .prose { font-size: 15.5px; }
.preview-pane .prose h2 { font-size: 21px; margin-top: 32px; }

.meta-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 14px; }

.cover-drop {
  border: 1px dashed var(--line-2); border-radius: 10px;
  background: var(--paper-2); padding: 16px;
  text-align: center; font-size: 13px; color: var(--muted);
  transition: border-color .18s, background .18s;
}
.cover-drop:hover { border-color: var(--accent); background: var(--accent-bg); }
.cover-preview { margin-top: 12px; border-radius: 8px; overflow: hidden; border: 1px solid var(--line); }
.cover-preview img { width: 100%; }

.tag-picker { display: flex; flex-wrap: wrap; gap: 7px; }
.tag-pick {
  padding: 5px 12px; border-radius: 999px; font-size: 13px;
  border: 1px solid var(--line); background: transparent; color: var(--ink-3);
  transition: all .16s;
}
.tag-pick.is-on { background: var(--ink); color: var(--paper); border-color: var(--ink); }

/* ---------- 页码 / 加载更多 ---------- */

.load-more { display: flex; justify-content: center; padding: 34px 0 0; }

/* ---------- 页脚 ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--paper-2);
  padding: 34px 0 30px;
  margin-top: 20px;
}
.site-footer__inner {
  display: flex; flex-wrap: wrap; gap: 16px; align-items: center;
  justify-content: space-between;
  font-size: 13px; color: var(--muted);
}
.site-footer__links { display: flex; gap: 16px; flex-wrap: wrap; }
.site-footer__links a:hover { color: var(--accent-ink); }

/* ---------- 排版封面（无图时的兜底） ---------- */

.cover-card {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--paper-2);
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--c, #8b8478) 20%, var(--card)),
    color-mix(in srgb, var(--c, #8b8478) 6%, var(--card)));
  display: grid; place-items: center;
  overflow: hidden;
}
.cover-card::after {
  content: ""; position: absolute; right: -14%; top: -28%;
  width: 62%; aspect-ratio: 1; border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--c, #8b8478) 26%, transparent);
}
.cover-card__ch {
  font-family: var(--font-serif);
  font-size: clamp(58px, 13vw, 112px);
  font-weight: 700; line-height: 1;
  color: color-mix(in srgb, var(--c, #8b8478) 72%, var(--ink));
  opacity: .92;
}
.cover-card__tag {
  position: absolute; left: 18px; bottom: 14px;
  font-size: 11.5px; letter-spacing: .2em;
  color: color-mix(in srgb, var(--c, #8b8478) 68%, var(--ink));
}

.post-cover {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  margin-bottom: 34px;
}
.post-cover img { width: 100%; }
.post-cover__ph {
  aspect-ratio: 21 / 9;
  display: grid; place-items: center;
  background: var(--paper-2);
  color: var(--ink-3); font-size: 14px; gap: 10px;
}

/* 阅读进度 */
.read-progress {
  position: fixed; top: 0; left: 0; height: 2px; width: 0;
  background: var(--accent); z-index: 100;
  transition: width .1s linear;
}

/* ---------- 工具类 ---------- */

.hidden { display: none !important; }
.mono { font-family: var(--font-mono); }
.nowrap { white-space: nowrap; }
.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;
}

@media print {
  .site-header, .site-footer, .article__toc, .prevnext, #toast-host { display: none; }
}