:root {
  /* 默认夜间，日间是可选 */
  --bg: #14120f;
  --fg: #d9d0c3;
  --muted: #8d8274;
  --card: #1c1915;
  --line: #2e2a24;
  --accent: #d09a4f;
  --accent-soft: #2b241a;
  --serif: "Noto Serif CJK SC", "Source Han Serif SC", "Songti SC", "SimSun", Georgia, serif;
  --sans: "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --read-size: 19px;
}

html[data-theme="light"] {
  --bg: #f6f2ea;
  --fg: #2a241c;
  --muted: #7b6f60;
  --card: #fffdf7;
  --line: #e2d8c6;
  --accent: #9a5b21;
  --accent-soft: #f0e2cd;
}

* { box-sizing: border-box; }

html { background: var(--bg); color-scheme: dark; }
html[data-theme="light"] { color-scheme: light; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior-y: none;
}

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

.wrap { max-width: 78rem; margin: 0 auto; padding: 0 20px; }

/* ---------- 顶栏 ---------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.topbar .wrap {
  display: flex;
  align-items: center;
  gap: 18px;
  height: 56px;
}

.brand {
  font-family: var(--serif);
  font-size: 20px;
  letter-spacing: 0.16em;
  color: var(--accent);
  font-weight: 600;
  white-space: nowrap;
}

.searchbox {
  flex: 1;
  display: flex;
  max-width: 30rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: var(--card);
}

.searchbox input {
  flex: 1;
  border: 0;
  background: transparent;
  color: var(--fg);
  padding: 7px 11px;
  font: inherit;
  outline: none;
  min-width: 0;
}

.searchbox button {
  border: 0;
  background: var(--accent-soft);
  color: var(--accent);
  padding: 0 14px;
  font: inherit;
  cursor: pointer;
}

.links { display: flex; align-items: center; gap: 16px; color: var(--muted); white-space: nowrap; }
.links form { margin: 0; }
.plain { border: 0; background: none; color: inherit; font: inherit; cursor: pointer; padding: 0; }
.plain:hover { color: var(--accent); }

/* ---------- 书架 ---------- */

main { padding: 26px 0 40px; }

.hero { margin-bottom: 22px; }
.hero h2, .sub {
  font-family: var(--serif);
  font-size: 15px;
  letter-spacing: 0.1em;
  color: var(--muted);
  font-weight: 600;
  margin: 0 0 10px;
}

.resume-row { display: flex; gap: 10px; overflow-x: auto; padding-bottom: 4px; }
.resume-row a {
  flex: 0 0 auto;
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 8px;
  padding: 8px 13px;
  font-size: 13px;
  max-width: 15rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.resume-row a b { display: block; font-weight: 600; font-size: 13.5px; }
.resume-row a span { color: var(--muted); font-size: 12px; }

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 20px;
}

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

.chip {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px 11px;
  font-size: 13px;
  color: var(--muted);
  background: var(--card);
}
.chip i { font-style: normal; opacity: 0.55; margin-left: 4px; font-size: 11px; }
.chip.on { background: var(--accent-soft); color: var(--accent); border-color: var(--accent); }
.chip.more { border-style: dashed; }

.sorts { display: flex; gap: 12px; font-size: 13px; color: var(--muted); }
.sorts .on { color: var(--accent); font-weight: 600; }

.hint { color: var(--muted); font-size: 13px; margin: 0 0 14px; }
.hint a { color: var(--accent); margin-left: 8px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15.5rem, 1fr));
  align-items: stretch;
  gap: 14px;
}

.card {
  display: flex;
  flex-direction: column;
  height: 100%;
  gap: 4px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 16px;
  transition: border-color 0.15s, transform 0.15s;
  min-height: 7.6rem;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card h3 {
  font-family: var(--serif);
  font-size: 16.5px;
  font-weight: 600;
  margin: 0;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.byline { margin: 0; color: var(--muted); font-size: 12.5px; }
.nums { margin: 0; color: var(--muted); font-size: 12px; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 6px 0 0; }
.tags span, .tags a {
  font-size: 11.5px;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 4px;
  padding: 1px 6px;
}

.empty { color: var(--muted); padding: 40px 0; text-align: center; }

.pager {
  display: flex;
  gap: 18px;
  justify-content: center;
  align-items: center;
  margin: 32px 0 8px;
  font-size: 14px;
  color: var(--muted);
}
.pager a { color: var(--accent); }

/* ---------- 详情 ---------- */

.book-head { padding: 10px 0 22px; border-bottom: 1px solid var(--line); }
.book-head h1 {
  font-family: var(--serif);
  font-size: 30px;
  margin: 0 0 8px;
  line-height: 1.3;
}
.book-head .byline { font-size: 13.5px; }
.actions { margin: 16px 0 0; }

.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  border-radius: 7px;
  padding: 8px 22px;
  font-size: 14px;
}
.btn:hover { color: #fff; opacity: 0.9; }

.sub { margin: 26px 0 12px; }

.toc {
  list-style: none;
  margin: 0;
  padding: 0;
  columns: 2;
  column-gap: 32px;
  font-size: 14px;
}
.toc li { break-inside: avoid; padding: 5px 0; border-bottom: 1px dashed var(--line); }
.toc a { color: var(--fg); }
.toc a:hover { color: var(--accent); }

/* ---------- 阅读 ---------- */

body.reading .topbar { display: none; }
body.reading .foot { display: none; }

.reader { max-width: 44rem; margin: 0 auto; padding: 0 20px 60px; }

.reader-bar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  padding: 10px 0;
  background: color-mix(in srgb, var(--bg) 94%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  margin-bottom: 26px;
}
.reader-bar .back {
  font-family: var(--serif);
  font-size: 14px;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.controls { display: flex; gap: 6px; flex: 0 0 auto; align-items: center; }
.controls button,
.controls a {
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--muted);
  border-radius: 6px;
  padding: 4px 9px;
  font: inherit;
  font-size: 12.5px;
  cursor: pointer;
  line-height: 1.6;
  display: inline-block;
}
.controls button:hover,
.controls a:hover { color: var(--accent); border-color: var(--accent); }

.text {
  font-family: var(--serif);
  font-size: var(--read-size);
  line-height: 1.72;
  letter-spacing: 0.02em;
}
.text h1 {
  font-size: 1.32em;
  font-weight: 600;
  margin: 0 0 1.4em;
  line-height: 1.45;
  padding-bottom: 0.7em;
  border-bottom: 1px solid var(--line);
}
.text p { margin: 0 0 0.95em; text-indent: 2em; word-break: break-word; }

.reader-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-top: 40px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 14px;
}
.reader-nav a { color: var(--accent); }
.reader-nav span { min-width: 1px; }

/* ---------- 标签页 ---------- */

.page-title {
  font-family: var(--serif);
  font-size: 22px;
  margin: 6px 0 20px;
  font-weight: 600;
}

.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; }
.tag-cloud a {
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 14px;
}
.tag-cloud a i { font-style: normal; color: var(--muted); margin-left: 7px; font-size: 12px; }
.tag-cloud a:hover { border-color: var(--accent); }

/* ---------- 登录 ---------- */

body.gate {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at 50% 0%, var(--accent-soft), var(--bg) 62%);
}

.login {
  width: min(22rem, calc(100vw - 40px));
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 30px 28px 26px;
  box-shadow: 0 18px 50px rgb(0 0 0 / 8%);
}
.login h1 {
  font-family: var(--serif);
  font-size: 26px;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin: 0 0 4px;
}
.login .sub { margin: 0 0 22px; color: var(--muted); font-size: 13px; letter-spacing: 0.06em; }
.login label { display: block; margin-bottom: 14px; font-size: 13px; color: var(--muted); }
.login input {
  width: 100%;
  margin-top: 6px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--fg);
  border-radius: 8px;
  padding: 9px 11px;
  font: inherit;
  font-size: 15px;
  outline: none;
}
.login input:focus { border-color: var(--accent); }
.login button {
  width: 100%;
  margin-top: 6px;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  padding: 10px;
  font: inherit;
  font-size: 15px;
  cursor: pointer;
  letter-spacing: 0.1em;
}
.login .error { color: #c0392b; font-size: 13px; margin: 10px 0 0; }

.error-page { text-align: center; padding: 80px 20px; }
.error-page h1 { font-family: var(--serif); font-size: 54px; color: var(--accent); margin: 0 0 10px; }
.error-page p { color: var(--muted); margin: 0 0 24px; }

.foot {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12.5px;
  text-align: center;
  padding: 18px 20px 26px;
}

@media (max-width: 640px) {
  .topbar .wrap { height: auto; padding: 9px 14px; flex-wrap: wrap; gap: 9px; }
  .searchbox { order: 3; max-width: none; flex-basis: 100%; }
  .searchbox input { padding: 9px 11px; }
  .links { margin-left: auto; gap: 14px; font-size: 14px; }
  .wrap { padding: 0 14px; }
  main { padding: 18px 0 30px; }

  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; }
  .card { padding: 11px 12px; min-height: 0; border-radius: 9px; }
  .card h3 { font-size: 14.5px; }
  .byline, .nums { font-size: 11.5px; }
  .tags span, .tags a { font-size: 11px; }

  .toolbar { gap: 10px; padding-bottom: 10px; margin-bottom: 14px; }
  .tabs {
    flex-wrap: nowrap;
    overflow-x: auto;
    gap: 7px;
    padding-bottom: 3px;
    scrollbar-width: none;
    margin-right: -14px;
    padding-right: 14px;
  }
  .tabs::-webkit-scrollbar { display: none; }
  .chip { flex: 0 0 auto; }
  .sorts { font-size: 12.5px; gap: 14px; }
  .resume-row a { max-width: 12rem; }

  .book-head { padding: 4px 0 16px; }
  .book-head h1 { font-size: 22px; }
  .btn { padding: 9px 26px; }
  .toc { columns: 1; font-size: 14.5px; }
  .toc li { padding: 8px 0; }

  .reader { padding: 0 15px 40px; }
  .reader-bar { padding: 8px 0; margin-bottom: 18px; gap: 10px; }
  .reader-bar .back { font-size: 13px; max-width: 40vw; }
  .controls button, .controls a { padding: 6px 10px; font-size: 13px; }
  .text { line-height: 1.7; }
  .text h1 { font-size: 1.24em; }
  .text p { margin-bottom: 0.9em; }

  .reader-nav { font-size: 15px; gap: 10px; }
  .reader-nav a { padding: 8px 0; }
}