/* ==========================================================================
   近现代汉传佛教同戒录数字文献库 · 样式表
   视觉定位：现代东方文献馆 —— 宣纸白 / 墨黑 / 墨绿 / 朱砂红
   ========================================================================== */

/* ---------- 设计变量 ---------- */
:root {
  --paper: #F7F4EC;          /* 宣纸白 · 主背景 */
  --paper-raise: #FCFAF4;    /* 卡片底 */
  --paper-deep: #EFEADC;     /* 深一度纸色 */
  --ink: #302D2A;            /* 墨黑 · 标题正文 */
  --ink-soft: #6F675C;       /* 次级文字 */
  --ink-faint: #9B917F;      /* 弱化文字 */
  --green: #34564A;          /* 墨绿 · 主题色 */
  --green-deep: #27423A;
  --green-mist: #E8ECE5;     /* 墨绿浅底 */
  --cinnabar: #8A4038;       /* 朱砂 · 点缀 */
  --cinnabar-mist: #F2E6E1;  /* 朱砂浅底 */
  --line: #DDD6CA;           /* 浅灰褐边框 */
  --line-strong: #C6BCA8;
  --serif: "Noto Serif SC", "Source Han Serif SC", "Source Han Serif CN",
           "Source Han Serif TC", "Songti SC", "SimSun", "宋体", serif;
  --sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC",
          "Microsoft YaHei", "微软雅黑", "Hiragino Sans GB", sans-serif;
  --shadow: 0 12px 32px rgba(48, 45, 42, 0.07);
}

/* ---------- 基础 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--green); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--cinnabar); }

img { max-width: 100%; display: block; }

button { font-family: var(--sans); cursor: pointer; }

input, button { font-family: inherit; }

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

:focus-visible {
  outline: 2px dashed var(--green);
  outline-offset: 3px;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247, 244, 236, 0.94);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
}

.brand:hover { color: var(--ink); }

/* 朱砂印章式标识：竖排「同戒」 */
.seal {
  width: 38px;
  height: 38px;
  background: var(--cinnabar);
  color: var(--paper);
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--serif);
  font-size: 15px;
  letter-spacing: 2px;
  line-height: 1.3;
  writing-mode: vertical-rl;
  box-shadow: inset 0 0 0 1px rgba(247, 244, 236, 0.28), 0 2px 6px rgba(138, 64, 56, 0.28);
}

.brand-name {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.14em;
}

.site-nav { display: flex; gap: 34px; }

.site-nav a {
  color: var(--ink-soft);
  font-size: 15px;
  letter-spacing: 0.12em;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.site-nav a:hover { color: var(--green); }

.site-nav a.active {
  color: var(--green);
  border-bottom-color: var(--cinnabar);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line-strong);
  border-radius: 3px;
  color: var(--ink-soft);
  font-size: 14px;
  letter-spacing: 0.2em;
  padding: 6px 14px;
}

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative;
  padding: 92px 24px 72px;
  text-align: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--serif);
  font-size: min(480px, 78vw);
  line-height: 1;
  color: rgba(52, 86, 74, 0.055);
  pointer-events: none;
  user-select: none;
}

.hero-inner {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
}

.hero .overline {
  font-size: 11px;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 30px;
}

.hero-title {
  font-family: var(--serif);
  font-size: clamp(44px, 8vw, 64px);
  font-weight: 600;
  letter-spacing: 0.45em;
  margin-right: -0.45em; /* 抵消末字间距，保持视觉居中 */
  line-height: 1.2;
}

.hero-sub {
  font-family: var(--serif);
  font-size: clamp(16px, 2.6vw, 20px);
  color: var(--ink-soft);
  letter-spacing: 0.3em;
  margin-top: 22px;
}

.hero-years {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin: 30px 0 40px;
  color: var(--cinnabar);
  font-family: var(--serif);
  font-size: 18px;
  letter-spacing: 0.28em;
}

.hero-years::before,
.hero-years::after {
  content: "";
  width: 72px;
  height: 1px;
  background: var(--line-strong);
}

.hero-search {
  display: flex;
  max-width: 560px;
  margin: 0 auto;
  border: 1px solid var(--line-strong);
  background: var(--paper-raise);
  border-radius: 3px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.hero-search input {
  flex: 1;
  min-width: 0;
  border: 0;
  background: transparent;
  padding: 14px 18px;
  font-size: 15px;
  color: var(--ink);
  letter-spacing: 0.05em;
}

.hero-search input::placeholder { color: var(--ink-faint); }

.hero-search input:focus { outline: none; }

.hero-search:focus-within { border-color: var(--green); }

.hero-search button {
  border: 0;
  background: var(--green);
  color: var(--paper);
  padding: 0 30px;
  font-size: 15px;
  letter-spacing: 0.3em;
  text-indent: 0.3em;
  transition: background 0.2s ease;
}

.hero-search button:hover { background: var(--green-deep); }

.hero-hint {
  margin-top: 22px;
  font-size: 12.5px;
  color: var(--ink-faint);
  letter-spacing: 0.15em;
}

/* ---------- 数据带 ---------- */
.stats-band {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--paper-raise);
}

.stats-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  padding-top: 22px;
  padding-bottom: 22px;
  flex-wrap: wrap;
}

.stat { display: flex; align-items: baseline; gap: 10px; }

.stat-num {
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 600;
  color: var(--green);
}

.stat-label { font-size: 13px; color: var(--ink-soft); letter-spacing: 0.2em; }

.stat-div { color: var(--cinnabar); font-size: 18px; }

/* ---------- 通用章节标题 ---------- */
.sec-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 72px 0 30px;
}

.sec-head h2 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.3em;
  white-space: nowrap;
}

.sec-head h2::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  background: var(--cinnabar);
  transform: rotate(45deg);
  margin-right: 14px;
  vertical-align: 3px;
}

.sec-line { flex: 1; height: 1px; background: var(--line); }

.sec-more { font-size: 13px; letter-spacing: 0.12em; white-space: nowrap; }

.sec-count {
  font-size: 14px;
  color: var(--cinnabar);
  letter-spacing: 0.08em;
  font-weight: 400;
}

.section-intro {
  font-size: 13.5px;
  color: var(--ink-soft);
  line-height: 1.9;
  margin: -12px 0 22px;
  max-width: 720px;
}

/* ---------- 首页 · 按寺院浏览 ---------- */
.temple-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 18px;
}

.temple-card {
  display: block;
  background: var(--paper-raise);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 22px 22px 18px;
  color: var(--ink);
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.temple-card:hover {
  border-color: var(--green);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  color: var(--ink);
}

.temple-region {
  font-size: 12px;
  color: var(--ink-faint);
  letter-spacing: 0.25em;
  margin-bottom: 8px;
}

.temple-name {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.06em;
  margin-bottom: 10px;
}

.temple-count {
  font-size: 12.5px;
  color: var(--green);
  letter-spacing: 0.1em;
  border-top: 1px dashed var(--line);
  padding-top: 10px;
}

/* ---------- 首页 · 文献精选 / 详情页 · 相关文献 通用行 ---------- */
.featured-list {
  background: var(--paper-raise);
  border: 1px solid var(--line);
  border-radius: 3px;
}

.book-row {
  display: flex;
  align-items: center;
  gap: 26px;
  padding: 22px 28px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  transition: background 0.2s ease;
}

.book-row:last-child { border-bottom: 0; }

.book-row:hover { background: var(--green-mist); color: var(--ink); }

.row-year {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 600;
  color: var(--green);
  min-width: 96px;
  line-height: 1.3;
}

.row-year em {
  display: block;
  font-style: normal;
  font-size: 12.5px;
  color: var(--cinnabar);
  letter-spacing: 0.2em;
  margin-top: 2px;
}

.row-main { flex: 1; min-width: 0; }

.row-title {
  display: block;
  font-family: var(--serif);
  font-size: 16.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.6;
}

.row-meta {
  display: block;
  font-size: 12.5px;
  color: var(--ink-soft);
  letter-spacing: 0.08em;
  margin-top: 3px;
}

/* 卡片頂部書影縮圖 */
.card-cover {
  display: block;
  width: 100%;
  height: 132px;
  object-fit: contain;
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-radius: 2px;
  margin-bottom: 14px;
  padding: 6px 0;
}

/* 列表行小書影 */
.row-cover { flex: none; display: flex; align-items: center; }

.row-cover img {
  height: 46px;
  width: auto;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  display: block;
  background: var(--paper-deep);
}

/* 燈箱 */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(48, 45, 42, 0.88);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 30px;
  cursor: zoom-out;
}

.lightbox img {
  max-width: 92vw;
  max-height: 88vh;
  border: 2px solid var(--paper);
  border-radius: 2px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.lightbox .lightbox-cap {
  position: absolute;
  bottom: 18px;
  left: 0;
  right: 0;
  text-align: center;
  color: var(--paper);
  font-size: 12.5px;
  letter-spacing: 0.15em;
  opacity: 0.85;
}

/* ---------- 状态徽章 ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  letter-spacing: 0.1em;
  padding: 3px 11px;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  white-space: nowrap;
  line-height: 1.7;
}

.chip::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.chip-pdf { background: var(--green); border-color: var(--green); color: var(--paper); }
.chip-text { color: var(--green); border-color: var(--green); }
.chip-academic { background: var(--green-mist); border-color: var(--green); color: var(--green); }
.chip-holding, .chip-lead { color: var(--cinnabar); border-color: var(--cinnabar); }
.chip-scan { background: var(--cinnabar-mist); color: var(--cinnabar); border-color: transparent; }
.chip-photo { color: var(--ink-soft); border-color: var(--line-strong); }
.chip-seeking { color: var(--ink-faint); border-style: dashed; }

/* 題名待核小徽章 */
.badge-verify {
  display: inline-block;
  font-size: 11px;
  font-weight: 400;
  color: var(--cinnabar);
  border: 1px solid rgba(138, 64, 56, 0.45);
  border-radius: 2px;
  padding: 0 7px;
  margin-left: 10px;
  letter-spacing: 0.12em;
  vertical-align: 2px;
  line-height: 1.8;
  white-space: nowrap;
}

/* 資源 / 來源列表 */
.res-list, .src-list { margin-top: 4px; }

.res-item { padding: 14px 0; border-bottom: 1px dashed var(--line); }
.res-item:last-child { border-bottom: 0; }

.res-item-head { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }

.res-badge {
  flex: none;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--green);
  border: 1px solid var(--green);
  border-radius: 2px;
  padding: 0 7px;
  line-height: 1.8;
  white-space: nowrap;
}
.res-badge-local_uploaded_pdf, .res-badge-other { color: var(--cinnabar); border-color: var(--cinnabar); }
.res-badge-acquisition_only, .res-badge-related { color: var(--ink-soft); border-color: var(--line-strong); }
.res-badge-related { border-style: dashed; }

.res-title { font-family: var(--serif); font-size: 14.5px; font-weight: 600; line-height: 1.6; }

.res-scope, .src-note { font-size: 13px; color: var(--ink-soft); margin-top: 5px; line-height: 1.8; }

.res-links { display: flex; align-items: baseline; gap: 12px; margin-top: 7px; flex-wrap: wrap; }

.res-link {
  font-size: 13px;
  letter-spacing: 0.06em;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 1px;
}

.res-role { font-size: 12px; color: var(--ink-faint); letter-spacing: 0.05em; }

.res-internal {
  margin-top: 7px;
  font-size: 12.5px;
  color: var(--cinnabar);
  background: var(--cinnabar-mist);
  border: 1px solid rgba(138, 64, 56, 0.2);
  border-radius: 2px;
  padding: 8px 12px;
  line-height: 1.8;
}

.src-item { padding: 12px 0; border-bottom: 1px dashed var(--line); }
.src-item:last-child { border-bottom: 0; }

.src-head { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }

.src-title { font-size: 14px; font-weight: 600; line-height: 1.7; }
a.src-title { border-bottom: 1px solid var(--line-strong); }

.src-relation {
  font-size: 11.5px;
  color: var(--green);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 0 7px;
  letter-spacing: 0.08em;
  line-height: 1.8;
  white-space: nowrap;
}

/* 核實狀態 */
.verify-box { margin-top: 4px; }

.verify-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--line);
}

.verify-row:last-child { border-bottom: 0; }

.verify-label { font-size: 13px; color: var(--ink-soft); letter-spacing: 0.1em; }

.verify-val { font-size: 13px; color: var(--ink); text-align: right; }

.chip-mini {
  font-size: 11.5px;
  letter-spacing: 0.1em;
  border: 1px solid;
  border-radius: 2px;
  padding: 1px 9px;
  line-height: 1.8;
  white-space: nowrap;
}
.chip-mini-ok { color: var(--green); border-color: var(--green); }
.chip-mini-bad { color: var(--cinnabar); border-color: rgba(138, 64, 56, 0.5); }

.card-year-null { font-size: 17px; color: var(--ink-faint); font-weight: 400; }

.head-status {
  margin-top: 12px;
  font-size: 13px;
  color: var(--ink-soft);
  letter-spacing: 0.05em;
}

/* ---------- 页面标题（总目 / 关于） ---------- */
.page-head { padding: 56px 0 8px; }

.page-head h1 {
  font-family: var(--serif);
  font-size: 32px;
  font-weight: 600;
  letter-spacing: 0.3em;
}

.page-head p {
  color: var(--ink-soft);
  font-size: 14.5px;
  margin-top: 14px;
  max-width: 640px;
}

/* ---------- 总目 · 筛选控制区 ---------- */
.controls {
  background: var(--paper-raise);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 18px 24px 14px;
  margin: 26px 0 34px;
}

.search-row {
  display: flex;
  gap: 14px;
  align-items: center;
  flex-wrap: wrap;
  padding-bottom: 16px;
  border-bottom: 1px dashed var(--line);
}

.search-box {
  flex: 1;
  min-width: 240px;
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--line-strong);
  border-radius: 3px;
  padding: 0 14px;
  background: var(--paper);
}

.search-box:focus-within { border-color: var(--green); }

.search-box svg { flex: none; color: var(--ink-faint); }

.search-box input {
  flex: 1;
  min-width: 0;
  border: 0;
  background: transparent;
  padding: 10px 0;
  font-size: 14.5px;
  color: var(--ink);
}

.search-box input:focus { outline: none; }

.search-box input::placeholder { color: var(--ink-faint); }

.seg {
  display: flex;
  border: 1px solid var(--line-strong);
  border-radius: 3px;
  overflow: hidden;
}

.seg button {
  border: 0;
  background: var(--paper);
  color: var(--ink-soft);
  font-size: 13px;
  letter-spacing: 0.1em;
  padding: 9px 16px;
  transition: background 0.2s ease, color 0.2s ease;
}

.seg button + button { border-left: 1px solid var(--line-strong); }

.seg button.active { background: var(--green); color: var(--paper); }

.dir-btn {
  border: 1px solid var(--line-strong);
  background: var(--paper);
  color: var(--ink-soft);
  border-radius: 3px;
  font-size: 13px;
  letter-spacing: 0.08em;
  padding: 9px 14px;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.dir-btn:hover { border-color: var(--green); color: var(--green); }

.filter-row {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 11px 0;
  flex-wrap: wrap;
}

.filter-row + .filter-row { border-top: 1px dashed var(--line); }

.filter-label {
  flex: none;
  font-family: var(--serif);
  font-size: 13.5px;
  color: var(--ink-faint);
  letter-spacing: 0.3em;
  min-width: 46px;
}

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

.fchip {
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink-soft);
  border-radius: 2px;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  padding: 3px 12px;
  transition: all 0.18s ease;
}

.fchip:hover { border-color: var(--green); color: var(--green); }

.fchip.active {
  background: var(--green);
  border-color: var(--green);
  color: var(--paper);
}

.result-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: 13px;
  color: var(--ink-soft);
  letter-spacing: 0.1em;
}

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

.export-btn {
  border: 1px solid var(--green);
  background: transparent;
  color: var(--green);
  border-radius: 2px;
  font-size: 12.5px;
  letter-spacing: 0.1em;
  padding: 4px 14px;
  transition: all 0.2s ease;
}

.export-btn:hover { background: var(--green); color: var(--paper); }

#clear-btn {
  border: 1px solid var(--cinnabar);
  background: transparent;
  color: var(--cinnabar);
  border-radius: 2px;
  font-size: 12.5px;
  letter-spacing: 0.1em;
  padding: 4px 14px;
  transition: all 0.2s ease;
}

#clear-btn:hover { background: var(--cinnabar); color: var(--paper); }

/* ---------- 总目 · 文献卡片 ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

.card {
  position: relative;
  display: block;
  background: var(--paper-raise);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 22px 24px 18px;
  color: var(--ink);
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  border-color: var(--green);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  color: var(--ink);
}

.card-top {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.card-year {
  font-family: var(--serif);
  font-size: 27px;
  font-weight: 600;
  color: var(--green);
  line-height: 1.2;
}

.card-ganzhi {
  font-size: 12.5px;
  color: var(--cinnabar);
  border: 1px solid currentColor;
  border-radius: 2px;
  padding: 0 7px;
  letter-spacing: 0.15em;
  line-height: 1.8;
}

.card-era {
  margin-left: auto;
  font-size: 11.5px;
  color: var(--ink-faint);
  letter-spacing: 0.12em;
}

.card-title {
  font-family: var(--serif);
  font-size: 17.5px;
  font-weight: 600;
  line-height: 1.65;
  letter-spacing: 0.02em;
  margin: 12px 0 8px;
}

.card-meta { font-size: 13px; color: var(--ink-soft); letter-spacing: 0.05em; }

.card-meta2 { font-size: 12.5px; color: var(--ink-faint); margin-top: 2px; letter-spacing: 0.05em; }

.card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
}

.card-go {
  font-size: 12.5px;
  color: var(--ink-faint);
  letter-spacing: 0.1em;
  transition: color 0.2s ease;
}

.card:hover .card-go { color: var(--green); }

/* 按寺院分组 */
.group-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin: 44px 0 18px;
}

.group-head h3 {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
  color: var(--green);
  letter-spacing: 0.1em;
}

.group-head span { font-size: 12.5px; color: var(--ink-faint); letter-spacing: 0.12em; }

.group-head .sec-line { margin-left: 4px; }

/* 空状态 */
.empty-state {
  text-align: center;
  padding: 90px 24px;
}

.empty-state .empty-glyph {
  font-family: var(--serif);
  font-size: 26px;
  letter-spacing: 0.4em;
  color: var(--ink-soft);
}

.empty-state p { color: var(--ink-faint); font-size: 14px; margin: 14px 0 26px; }

/* ---------- 详情页 ---------- */
.crumbs {
  padding: 26px 0 6px;
  font-size: 12.5px;
  color: var(--ink-faint);
  letter-spacing: 0.1em;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.crumbs-path { min-width: 0; }

.crumbs-back {
  flex: none;
  border: 1px solid var(--line-strong);
  background: var(--paper-raise);
  color: var(--ink-soft);
  border-radius: 2px;
  font-size: 12.5px;
  letter-spacing: 0.1em;
  padding: 5px 16px;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.crumbs-back:hover {
  border-color: var(--green);
  color: var(--paper);
  background: var(--green);
}

.crumbs a { color: var(--ink-faint); }
.crumbs a:hover { color: var(--green); }
.crumbs span { margin: 0 8px; }

.book-head { padding: 10px 0 30px; }

.book-head h1 {
  font-family: var(--serif);
  font-size: clamp(22px, 3.4vw, 30px);
  font-weight: 600;
  line-height: 1.6;
  letter-spacing: 0.02em;
}

.book-head-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 14px;
  font-size: 13.5px;
  color: var(--ink-soft);
  letter-spacing: 0.08em;
}

.book-head-meta .sep { color: var(--line-strong); }

.book-layout {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 30px;
  align-items: start;
}

/* 首頁書影（詳情頁） */
.cover-plate {
  margin: 4px 0 30px;
  padding: 16px 20px 12px;
  background: var(--paper-raise);
  border: 1px solid var(--line);
  border-radius: 3px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.cover-plate img {
  max-height: 360px;
  max-width: min(100%, 480px);
  width: auto;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  box-shadow: var(--shadow);
  cursor: zoom-in;
}

.cover-plate figcaption {
  font-size: 12px;
  color: var(--ink-faint);
  letter-spacing: 0.12em;
  text-align: center;
}

/* 阅读区（原书影像 / 全文） */
.reader {
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-radius: 3px;
  overflow: hidden;
  margin: 6px 0 34px;
}

.reader-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 18px;
  background: var(--paper-raise);
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}

.reader-title {
  font-family: var(--serif);
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: 0.25em;
  color: var(--ink-soft);
}

.reader-tabs { display: flex; gap: 4px; margin-left: 6px; }

.reader-tabs button {
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--ink-soft);
  border-radius: 2px;
  font-size: 12px;
  letter-spacing: 0.08em;
  padding: 3px 12px;
  max-width: 230px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.reader-tabs button.active {
  background: var(--green);
  border-color: var(--green);
  color: var(--paper);
}

.reader-actions { margin-left: auto; display: flex; gap: 8px; }

.reader-actions a, .reader-actions button {
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--ink-soft);
  border-radius: 2px;
  font-size: 12px;
  letter-spacing: 0.08em;
  padding: 3px 12px;
  text-decoration: none;
  transition: all 0.2s ease;
}

.reader-actions a:hover, .reader-actions button:hover {
  border-color: var(--green);
  color: var(--green);
}

.reader-frame iframe {
  display: block;
  width: 100%;
  height: min(76vh, 860px);
  border: 0;
  background: #fff;
}

.reader-frame iframe.text-frame { background: var(--paper); height: min(76vh, 860px); }

/* 暂无数字资源 */
.reader-none {
  padding: 90px 30px;
  text-align: center;
}

.reader-none .none-seal {
  width: 64px;
  height: 64px;
  margin: 0 auto 22px;
  border: 1.5px solid var(--cinnabar);
  border-radius: 3px;
  color: var(--cinnabar);
  font-family: var(--serif);
  font-size: 15px;
  letter-spacing: 2px;
  writing-mode: vertical-rl;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1.4;
  padding: 4px 0;
}

.reader-none h3 {
  font-family: var(--serif);
  font-size: 19px;
  letter-spacing: 0.3em;
  color: var(--ink);
  font-weight: 600;
}

.reader-none p {
  font-size: 13.5px;
  color: var(--ink-soft);
  margin-top: 12px;
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}

/* 外部资源提示 */
.reader-external {
  padding: 70px 34px;
  text-align: center;
}

.reader-external h3 {
  font-family: var(--serif);
  font-size: 18px;
  letter-spacing: 0.2em;
  font-weight: 600;
}

.reader-external p {
  font-size: 13.5px;
  color: var(--ink-soft);
  margin: 12px auto 24px;
  max-width: 420px;
}

/* 右栏信息面板 */
.panel {
  background: var(--paper-raise);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 20px 24px 14px;
  margin-bottom: 22px;
}

.panel-title {
  font-family: var(--serif);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.3em;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

.panel-title::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--cinnabar);
  transform: rotate(45deg);
  margin-right: 12px;
  vertical-align: 2px;
}

.bib-table { width: 100%; border-collapse: collapse; }

.bib-table th {
  text-align: left;
  font-weight: 400;
  font-size: 12.5px;
  color: var(--ink-faint);
  letter-spacing: 0.2em;
  width: 82px;
  padding: 9px 12px 9px 0;
  vertical-align: baseline;
  white-space: nowrap;
}

.bib-table td {
  font-size: 14.5px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--line);
  vertical-align: baseline;
}

.bib-table tr:last-child th, .bib-table tr:last-child td { border-bottom: 0; }

.bib-table td a { border-bottom: 1px solid var(--line-strong); }

/* 资源按钮 */
.res-panel { display: flex; flex-wrap: wrap; gap: 10px; padding-bottom: 10px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--green);
  color: var(--green);
  background: transparent;
  border-radius: 2px;
  font-size: 13.5px;
  letter-spacing: 0.12em;
  padding: 9px 20px;
  text-decoration: none;
  transition: all 0.2s ease;
}

.btn:hover { background: var(--green); color: var(--paper); }

.btn-solid { background: var(--green); color: var(--paper); }

.btn-solid:hover { background: var(--green-deep); border-color: var(--green-deep); color: var(--paper); }

.btn-cinnabar { border-color: var(--cinnabar); color: var(--cinnabar); }

.btn-cinnabar:hover { background: var(--cinnabar); color: var(--paper); }

.res-none {
  font-size: 13px;
  color: var(--ink-soft);
  padding: 6px 0 10px;
}

/* 馆藏 */
.hold-rows { padding-bottom: 8px; }

.hold-row {
  display: flex;
  gap: 14px;
  padding: 8px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 14px;
}

.hold-row:last-of-type { border-bottom: 0; }

.hold-row dt {
  flex: none;
  width: 68px;
  font-size: 12.5px;
  color: var(--ink-faint);
  letter-spacing: 0.2em;
  padding-top: 1px;
}

.hold-row dd { flex: 1; min-width: 0; }

.hold-row dd a { border-bottom: 1px solid var(--line-strong); word-break: break-all; }

.hold-foot {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 0 6px;
  font-size: 12px;
  color: var(--ink-faint);
  letter-spacing: 0.1em;
}

.chip-ok { color: var(--green); border-color: var(--green); }
.chip-unverified { color: var(--cinnabar); border-color: var(--cinnabar); }

.hold-none { font-size: 13px; color: var(--ink-soft); padding: 6px 0 10px; }

/* 备注 */
.note-text { font-size: 13.5px; color: var(--ink-soft); padding: 4px 0 10px; }

/* 相关文献 */
.related { margin-top: 64px; }

/* ---------- 关于页 ---------- */
.about-article {
  max-width: 780px;
  margin: 0 auto;
  padding: 56px 24px 40px;
}

.about-article h1 {
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 600;
  letter-spacing: 0.3em;
  margin-bottom: 8px;
}

.about-article .sec-head { margin: 52px 0 20px; }

.about-article .sec-head h2 { font-size: 19px; }

.about-article p {
  text-align: justify;
  color: var(--ink);
  font-size: 15.5px;
  line-height: 2.05;
  margin-bottom: 16px;
}

.about-article p.muted { color: var(--ink-soft); font-size: 14px; }

.about-article ul {
  margin: 0 0 16px 1.6em;
  color: var(--ink);
  font-size: 15px;
  line-height: 2.05;
}

.about-article strong { font-weight: 600; }

.status-legend {
  list-style: none;
  margin-left: 0;
  background: var(--paper-raise);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 6px 22px;
}

.status-legend li {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 14px;
}

.status-legend li:last-child { border-bottom: 0; }

.contact-box {
  background: var(--paper-raise);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 22px 26px;
  margin-top: 6px;
}

.contact-box .mail {
  font-family: var(--serif);
  font-size: 17px;
  letter-spacing: 0.06em;
  color: var(--green);
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 2px;
}

.data-note {
  background: var(--cinnabar-mist);
  border: 1px solid rgba(138, 64, 56, 0.25);
  border-radius: 3px;
  padding: 16px 22px;
  font-size: 13.5px;
  color: var(--cinnabar);
  line-height: 1.9;
  margin-top: 26px;
}

/* ---------- 登录门禁页 ---------- */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  position: relative;
  overflow: hidden;
}

.login-bg {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--serif);
  font-size: min(520px, 85vw);
  color: rgba(52, 86, 74, 0.05);
  pointer-events: none;
  user-select: none;
}

.login-card {
  position: relative;
  width: 100%;
  max-width: 400px;
  background: var(--paper-raise);
  border: 1px solid var(--line);
  border-radius: 3px;
  box-shadow: var(--shadow);
  padding: 44px 40px 36px;
}

.login-card .login-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  margin-bottom: 30px;
  text-align: center;
}

.login-card .login-brand .seal { width: 46px; height: 46px; font-size: 18px; }

.login-title {
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 600;
  letter-spacing: 0.22em;
  margin-right: -0.22em;
}

.login-sub {
  font-size: 12px;
  color: var(--ink-faint);
  letter-spacing: 0.18em;
}

.login-field { margin-bottom: 18px; }

.login-field label {
  display: block;
  font-size: 12.5px;
  color: var(--ink-soft);
  letter-spacing: 0.28em;
  margin-bottom: 7px;
}

.login-field input {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: 3px;
  background: var(--paper);
  padding: 11px 14px;
  font-size: 15px;
  color: var(--ink);
  letter-spacing: 0.06em;
  transition: border-color 0.2s ease;
}

/* 密碼可見性小眼睛 */
.pass-wrap { position: relative; }

.pass-wrap input { padding-right: 46px; }

.pass-eye {
  position: absolute;
  right: 7px;
  top: 50%;
  transform: translateY(-50%);
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 0;
  background: transparent;
  color: var(--ink-faint);
  border-radius: 3px;
  cursor: pointer;
  transition: color 0.2s ease;
}

.pass-eye:hover { color: var(--green); }

.pass-eye svg { width: 19px; height: 19px; }

.pass-eye .eye-open { display: none; }
.pass-eye.show .eye-open { display: block; }
.pass-eye.show .eye-closed { display: none; }

.login-field input:focus {
  outline: none;
  border-color: var(--green);
}

.login-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 4px 0 22px;
  font-size: 13px;
}

.login-row label {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--ink-soft);
  cursor: pointer;
  letter-spacing: 0.06em;
}

.login-row input[type="checkbox"] { accent-color: var(--green); }

.login-btn {
  width: 100%;
  border: 0;
  border-radius: 3px;
  background: var(--green);
  color: var(--paper);
  font-size: 15px;
  letter-spacing: 0.35em;
  text-indent: 0.35em;
  padding: 13px 0;
  transition: background 0.2s ease;
}

.login-btn:hover { background: var(--green-deep); }

.login-error {
  display: none;
  margin-top: 16px;
  font-size: 13px;
  color: var(--cinnabar);
  background: var(--cinnabar-mist);
  border: 1px solid rgba(138, 64, 56, 0.25);
  border-radius: 2px;
  padding: 9px 14px;
  text-align: center;
  letter-spacing: 0.08em;
}

.login-error.show { display: block; }

.login-tip {
  margin-top: 22px;
  font-size: 11.5px;
  color: var(--ink-faint);
  text-align: center;
  letter-spacing: 0.1em;
  line-height: 1.9;
}

.login-shake { animation: login-shake 0.4s ease; }

@keyframes login-shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-9px); }
  40% { transform: translateX(8px); }
  60% { transform: translateX(-6px); }
  80% { transform: translateX(4px); }
}

/* 顶栏登出（门禁开启且已登录时注入） */
.site-nav a.nav-logout {
  color: var(--cinnabar);
  border-bottom: 2px solid transparent;
  letter-spacing: 0.12em;
}

.site-nav a.nav-logout:hover {
  color: var(--cinnabar);
  border-bottom-color: var(--cinnabar);
}

/* ---------- 载入 / 错误 / 无脚本 ---------- */
.loading {
  text-align: center;
  color: var(--ink-faint);
  letter-spacing: 0.3em;
  padding: 90px 0;
  font-size: 14px;
}

.error-box {
  margin: 40px auto;
  max-width: 560px;
  background: var(--cinnabar-mist);
  border: 1px solid rgba(138, 64, 56, 0.3);
  border-radius: 3px;
  padding: 26px 30px;
  text-align: center;
}

.error-box h3 {
  font-family: var(--serif);
  font-size: 17px;
  color: var(--cinnabar);
  letter-spacing: 0.2em;
  margin-bottom: 10px;
}

.error-box p { font-size: 13.5px; color: var(--ink-soft); line-height: 1.9; }

noscript .error-box { margin-top: 70px; }

/* ---------- 页脚 ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: var(--paper-raise);
  margin-top: 96px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  padding: 44px 24px 0;
  flex-wrap: wrap;
}

.footer-brand .brand-name { font-size: 17px; }

.footer-brand p {
  font-size: 12.5px;
  color: var(--ink-faint);
  margin-top: 12px;
  letter-spacing: 0.15em;
  line-height: 2;
}

.footer-col h4 {
  font-family: var(--serif);
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink-soft);
  letter-spacing: 0.3em;
  margin-bottom: 14px;
}

.footer-col a {
  display: block;
  font-size: 13px;
  color: var(--ink-faint);
  padding: 3px 0;
  letter-spacing: 0.08em;
}

.footer-col a:hover { color: var(--green); }

.footer-bottom {
  text-align: center;
  font-size: 12px;
  color: var(--ink-faint);
  letter-spacing: 0.12em;
  padding: 30px 24px 26px;
  margin-top: 36px;
  border-top: 1px dashed var(--line);
}

.footer-bottom p { margin: 0; }

.footer-legal { margin-top: 7px; }

.footer-legal a { color: var(--ink-faint); }

.footer-legal a:hover { color: var(--green); }

/* 分段分隔点（移动端隐藏，按段换行） */
.footer-copy .fsep, .footer-legal .fsep { margin: 0 3px; color: var(--line-strong); }

@media (max-width: 640px) {
  .footer-bottom { letter-spacing: 0.04em; }
  .footer-copy, .footer-legal {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
  }
  .footer-copy .fsep, .footer-legal .fsep { display: none; }
  .footer-legal { margin-top: 12px; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 920px) {
  .book-layout { grid-template-columns: 1fr; }
  .book-info { order: -1; } /* 手机端：书目信息在上，阅读区在下 */
  .reader-frame iframe { height: 70vh; }
}

@media (max-width: 680px) {
  .nav-toggle { display: block; }
  .site-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--paper-raise);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    gap: 0;
    padding: 8px 24px 14px;
  }
  .site-header.nav-open .site-nav { display: flex; }
  .site-nav a { padding: 12px 0; border-bottom: 1px dashed var(--line); font-size: 15px; }
  .site-nav a:last-child { border-bottom: 0; }
  .site-nav a.active { border-bottom-color: var(--cinnabar); }

  .hero { padding: 64px 20px 56px; }
  .hero-years::before, .hero-years::after { width: 40px; }

  .book-row { gap: 16px; padding: 18px 20px; flex-wrap: wrap; }
  .row-year { min-width: 0; font-size: 21px; }
  .book-row .chip { margin-left: auto; }

  .controls { padding: 14px 16px 12px; }
  .filter-label { min-width: 40px; }

  .footer-inner { flex-direction: column; gap: 28px; }
}