* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: #2d2d2d;
  background: #faf8f4;
}
.site-header {
  padding: 14px 24px;
  background: #fff;
  border-bottom: 1px solid #eee;
  font-weight: 700;
}
.site-header a { color: #8a5a2b; text-decoration: none; }
.site-header { display: flex; justify-content: space-between; align-items: center; }
.site-header .nav-admin { color: #2b6cb0; font-size: 14px; }
.site-header .nav { display: inline-flex; align-items: center; gap: 16px; font-weight: 500; }
.site-header .nav a { color: #2b6cb0; text-decoration: none; font-size: 14px; }
.site-header .nav a:hover { text-decoration: underline; }

/* 登录 / 注册 */
.auth-wrap { display: flex; justify-content: center; padding: 48px 16px; }
.auth-card {
  width: 100%; max-width: 360px; background: #fff; border: 1px solid #ececec;
  border-radius: 12px; padding: 28px 26px; box-shadow: 0 6px 24px rgba(0,0,0,.06);
}
.auth-card h1 { margin: 0 0 18px; font-size: 22px; color: #8a5a2b; text-align: center; }
.auth-card label { display: block; font-size: 14px; color: #555; margin-bottom: 14px; }
.auth-card input {
  display: block; width: 100%; margin-top: 6px; padding: 9px 11px; font-size: 15px;
  border: 1px solid #dcdcdc; border-radius: 8px; box-sizing: border-box;
}
.auth-card input:focus { outline: none; border-color: #2b6cb0; }
.auth-card small { display: block; margin-top: 4px; }
.auth-error { background: #fdecea; color: #c0392b; padding: 9px 12px; border-radius: 8px; font-size: 14px; margin: 0 0 16px; }
.auth-foot { margin: 16px 0 0; text-align: center; font-size: 14px; color: #888; }
.btn-block { width: 100%; justify-content: center; margin-top: 4px; }
.container { max-width: 860px; margin: 0 auto; padding: 32px 24px; }
.hero h1 { font-size: 28px; color: #8a5a2b; }
.hero p { line-height: 1.8; color: #555; }
.hint a { color: #2b6cb0; }
.site-footer {
  margin-top: 48px;
  padding: 16px;
  text-align: center;
  color: #999;
  font-size: 13px;
}
.empty { color: #a00; }

/* 书籍列表 */
.book-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
.book-card {
  display: block; background: #fff; border: 1px solid #ececec; border-radius: 10px;
  overflow: hidden; text-decoration: none; color: inherit; transition: .15s;
}
.book-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,.08); transform: translateY(-2px); }
.book-card img { width: 100%; height: 130px; object-fit: cover; }
.book-card-body { padding: 14px; }
.book-card-body h2 { margin: 0 0 6px; font-size: 18px; }
.book-card-body .meta { margin: 0 0 8px; color: #888; font-size: 13px; }
.book-card-body .desc { margin: 0; color: #666; font-size: 14px; line-height: 1.6;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

/* 阅读页 */
.reader-head { border-bottom: 2px solid #8a5a2b; padding-bottom: 12px; margin-bottom: 20px; }
.reader-head h1 { color: #8a5a2b; margin: 0 0 4px; }
.reader-head .meta { color: #888; margin: 0; }
.toc { background: #fff; border: 1px solid #eee; border-radius: 10px; padding: 14px 18px; margin-bottom: 24px; }
.toc h3 { margin: 0 0 8px; font-size: 15px; }
.toc ol { margin: 0; padding-left: 20px; columns: 2; }
.toc li { margin: 4px 0; }
.toc a { color: #444; text-decoration: none; font-size: 13px; }
.toc a:hover { color: #8a5a2b; }
.sentence { background: #fff; border: 1px solid #eee; border-radius: 10px; padding: 18px 20px; margin-bottom: 14px; scroll-margin-top: 20px; }
.sentence .line { display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px; }
.sentence .sort { color: #8a5a2b; font-size: 13px; font-weight: 600; }
.sentence .share-link { font-size: 13px; color: #2b6cb0; text-decoration: none; }
.sentence .original { font-size: 22px; line-height: 1.9; margin: 6px 0; letter-spacing: 1px; }
.sentence .pinyin { color: #888; font-size: 14px; margin: 0 0 10px; }
.sentence .read-detail { color: #2b6cb0; text-decoration: none; font-size: 14px; cursor: pointer; }
.read-detail:hover { text-decoration: underline; }

/* 详情弹窗（点击「查看译注 / 字词 / 导读」拉取 API 渲染，不离开阅读页） */
.rb-modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,.45);
  display: none; align-items: flex-start; justify-content: center;
  padding: 48px 16px; z-index: 1000; overflow-y: auto;
}
.rb-modal-overlay.open { display: flex; }
.rb-modal {
  background: #fff; width: 100%; max-width: 640px; border-radius: 14px;
  padding: 24px 26px; position: relative; box-shadow: 0 12px 40px rgba(0,0,0,.22);
}
.rb-modal-close {
  position: absolute; top: 10px; right: 14px; border: none; background: none;
  font-size: 26px; line-height: 1; color: #bbb; cursor: pointer;
}
.rb-modal-close:hover { color: #555; }
.rb-modal-head {
  border-bottom: 2px solid #8a5a2b; padding-bottom: 12px; margin-bottom: 16px; padding-right: 28px;
}
.rb-modal .rb-original { font-size: 22px; line-height: 1.8; color: #8a5a2b; letter-spacing: 1px; }
.rb-modal .rb-pinyin { color: #888; font-size: 14px; margin-top: 4px; }
.rb-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.rb-tab {
  padding: 6px 14px; border: 1px solid #e2d9cc; border-radius: 20px;
  background: #faf8f4; color: #8a5a2b; font-size: 14px; cursor: pointer;
}
.rb-tab.active { background: #8a5a2b; color: #fff; border-color: #8a5a2b; }
.rb-tab-content { font-size: 15px; line-height: 1.95; color: #444; white-space: pre-wrap; min-height: 80px; }
.rb-loading, .rb-error { color: #888; padding: 16px 0; text-align: center; min-height: 80px; }
.rb-error { color: #c0392b; }

/* 用户管理表格 */
.rb-error-box { background: #fdecea; color: #c0392b; padding: 10px 14px; border-radius: 8px; margin-bottom: 16px; font-size: 14px; }
.user-table { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid #ececec; border-radius: 10px; overflow: hidden; }
.user-table th, .user-table td { text-align: left; padding: 12px 14px; border-bottom: 1px solid #f0f0f0; font-size: 14px; }
.user-table th { background: #faf8f4; color: #8a5a2b; font-weight: 700; }
.user-table tr:last-child td { border-bottom: none; }
.role-badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 12px; }
.role-admin { background: #e8f3e8; color: #2f7d32; }
.role-normal { background: #eef2f7; color: #5a6b7b; }
.role-form select { padding: 6px 8px; border: 1px solid #dcdcdc; border-radius: 8px; font-size: 14px; background: #fff; }

/* 后台管理 */
.admin { max-width: 920px; }
.admin h1 { color: #8a5a2b; }
.muted { color: #999; font-weight: 400; font-size: 15px; }
.admin-head { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 18px; gap: 12px; flex-wrap: wrap; }
.admin-table { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid #eee; border-radius: 10px; overflow: hidden; }
.admin-table th, .admin-table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid #f2f2f2; font-size: 14px; }
.admin-table th { background: #faf8f4; color: #8a5a2b; font-weight: 600; }
.admin-table .num { color: #8a5a2b; font-weight: 600; width: 48px; }
.admin-table .orig { font-size: 16px; letter-spacing: 1px; }
.admin-table .ops a { color: #2b6cb0; text-decoration: none; margin-right: 12px; }
.admin-table .ops a:hover { text-decoration: underline; }
.badge { padding: 2px 10px; border-radius: 12px; font-size: 12px; font-weight: 600; }
.badge.ok { background: #ecfdf5; color: #059669; }
.badge.miss { background: #fef2f2; color: #dc2626; }
.btn { display: inline-block; background: #8a5a2b; color: #fff; border: none; border-radius: 8px; padding: 8px 16px; font-size: 14px; text-decoration: none; cursor: pointer; }
.btn:hover { background: #754a22; }
.form-actions { margin-top: 18px; display: flex; gap: 14px; align-items: center; }
.form-actions a { color: #2b6cb0; text-decoration: none; }
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13px; color: #666; margin-bottom: 4px; }
.field input[type=text], .field input[type=number], .field textarea {
  width: 100%; padding: 8px 10px; border: 1px solid #ddd; border-radius: 8px;
  font-size: 14px; font-family: inherit; box-sizing: border-box;
}
.field textarea { resize: vertical; line-height: 1.7; }

/* 分享卡页 */
.share-card { background: #fff; border: 1px solid #eee; border-radius: 14px; padding: 28px 24px; text-align: center; }
.share-card .brand { color: #8a5a2b; font-weight: 600; letter-spacing: 2px; margin: 0; }
.share-card .sort { color: #aaa; font-size: 13px; margin: 4px 0 16px; }
.share-card .original { font-size: 30px; line-height: 1.9; margin: 0 0 12px; }
.share-card .pinyin { color: #888; margin: 0 0 20px; }
.share-card .block { text-align: left; border-top: 1px solid #f0f0f0; padding: 12px 0; }
.share-card .block summary { cursor: pointer; color: #8a5a2b; font-weight: 600; }
.share-card .block p { line-height: 1.8; color: #555; margin: 8px 0 0; white-space: pre-wrap; }
.actions { margin: 22px 0 8px; display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.actions button, .actions .reader-link {
  background: #8a5a2b; color: #fff; border: none; border-radius: 8px; padding: 10px 18px;
  font-size: 14px; text-decoration: none; cursor: pointer;
}
.actions .reader-link { background: #2b6cb0; }
.tip { color: #2b6cb0; font-size: 13px; min-height: 18px; }
.pager { margin-top: 20px; display: flex; justify-content: space-between; }
.pager a { color: #8a5a2b; text-decoration: none; }