/* ============================================================================
   小学古诗词 · 样式表
   ----------------------------------------------------------------------------
   设计基调：宣纸 + 墨 + 朱砂。所有资源同源（不引外部字体/CDN），
   因为站点部署在境内 3 Mbps 带宽的服务器上（见 doc/03-运维与部署手册.md）。
   分三层写：① 设计令牌 ② 布局骨架 ③ 业务组件 —— 顺序即优先级。
   ========================================================================== */

/* ---------------------------------------------------------------- ① 令牌 */
:root {
  --paper: #f4eee2;
  --paper-2: #fbf7ee;
  --card: #fffdf8;
  --card-2: #faf5ea;

  --ink: #23262b;
  --ink-2: #565d66;
  --ink-3: #8a9099;

  --line: #e5dbc8;
  --line-2: #efe7d8;

  --seal: #a52a2a;
  --seal-2: #c0392b;
  --seal-soft: #f7e8e4;

  --jade: #2f6b52;
  --jade-soft: #e4f0e9;

  --lv1: #c2703f;
  --lv2: #a9822c;
  --lv3: #2f6b52;
  --lv4: #a52a2a;

  --gold: #a9822c;
  --shadow: 0 1px 2px rgba(72, 55, 30, .06), 0 10px 26px -16px rgba(72, 55, 30, .35);
  --shadow-lg: 0 2px 6px rgba(40, 30, 15, .1), 0 24px 48px -24px rgba(40, 30, 15, .45);
  --radius: 14px;
  --radius-sm: 10px;

  --font-ui: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-poem: "Songti SC", "STSong", "Source Han Serif SC", "Noto Serif SC",
    "Songti TC", "SimSun", "Georgia", serif;

  --fs: 16px;
  --tap: 44px;
  --maxw: 900px;
  --tabbar-h: 60px;
}

html[data-theme="dark"] {
  --paper: #0f1114;
  --paper-2: #14171c;
  --card: #191d23;
  --card-2: #1e232a;

  --ink: #e8e3d7;
  --ink-2: #aeb5bf;
  --ink-3: #7d848e;

  --line: #2c323b;
  --line-2: #232830;

  --seal: #d9736b;
  --seal-2: #e08a80;
  --seal-soft: #2a1d1c;

  --jade: #7cc5a3;
  --jade-soft: #16261f;

  --lv1: #d99a6c;
  --lv2: #d9b25f;
  --lv3: #7cc5a3;
  --lv4: #e08a80;

  --gold: #d9b25f;
  --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 10px 26px -16px rgba(0, 0, 0, .8);
  --shadow-lg: 0 2px 6px rgba(0, 0, 0, .5), 0 24px 48px -24px rgba(0, 0, 0, .9);
}

/* 字号档位：整页等比放大，小朋友/长辈都能看清 */
html[data-font="large"] { --fs: 18px; }
html[data-font="xlarge"] { --fs: 20px; }

/* ---------------------------------------------------------------- ② 骨架 */
* { box-sizing: border-box; -webkit-text-size-adjust: 100%; }

html, body { margin: 0; padding: 0; }

body {
  background-color: var(--paper);
  background-image:
    radial-gradient(1200px 600px at 12% -10%, rgba(165, 42, 42, .05), transparent 60%),
    radial-gradient(900px 500px at 100% 0%, rgba(47, 107, 82, .05), transparent 55%);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: var(--fs);
  font-weight: 450;
  line-height: 1.6;
  /* 不再用 -webkit-font-smoothing: antialiased：它会把中文字形削细一圈，
     用户反馈「字体有一些细」主要就是它 + 宋体 400 字重叠出来的 */
  -webkit-font-smoothing: auto;
  -moz-osx-font-smoothing: auto;
  overflow-x: hidden;
}

/* 中文字体普遍没有 450 这一档，浏览器会就近取 400/500；
   这里显式给正文一个不容易发虚的基准 */
b, strong, h1, h2, h3, h4 { font-weight: 700; }

button { font: inherit; color: inherit; cursor: pointer; }
h1, h2, h3, h4, p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
mark { background: rgba(169, 130, 44, .28); color: inherit; border-radius: 3px; padding: 0 2px; }

.app {
  max-width: var(--maxw);
  margin: 0 auto;
  padding-bottom: calc(var(--tabbar-h) + 22px + env(safe-area-inset-bottom));
}

/* 顶栏 */
.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: calc(9px + env(safe-area-inset-top)) 14px 9px;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line-2);
}
.brand { display: flex; align-items: center; gap: 10px; min-width: 0; flex: 1; }
.seal {
  flex: none;
  width: 36px; height: 36px;
  display: grid; place-items: center;
  background: var(--seal);
  color: #fdf8ef;
  border-radius: 9px;
  font-family: var(--font-poem);
  font-size: 21px;
  box-shadow: var(--shadow);
}
/* 顶栏有 4 个按钮（搜索/主题/字号/打印），窄屏 + 特大字号时要能收住，不挤破布局 */
.brand-text { min-width: 0; overflow: hidden; }
.brand h1 { font-size: 1.02rem; font-weight: 700; letter-spacing: .04em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#topSub {
  font-size: .72rem; color: var(--ink-3); white-space: nowrap;
  overflow: hidden; text-overflow: ellipsis;
}
.top-actions { display: flex; gap: 6px; flex: none; }
.icon-btn {
  width: var(--tap); height: var(--tap);
  display: grid; place-items: center;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 11px;
  font-size: .95rem;
  transition: transform .12s ease, border-color .12s ease;
}
.icon-btn:active { transform: scale(.94); }
.icon-btn:hover { border-color: var(--seal); }

.view { padding: 12px 12px 4px; }
.loading { padding: 60px 20px; text-align: center; color: var(--ink-3); }

/* 底部导航 */
.tabbar {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 30;
  display: flex;
  justify-content: center;
  gap: 2px;
  padding: 6px 8px calc(6px + env(safe-area-inset-bottom));
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: saturate(1.4) blur(12px);
  border-top: 1px solid var(--line-2);
}
.tab {
  position: relative;
  flex: 1 1 0;
  max-width: 180px;
  min-height: var(--tabbar-h);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 2px;
  background: none; border: 0; border-radius: 12px;
  color: var(--ink-3);
  font-size: .68rem;
}
.tab-ico { font-size: 1.22rem; line-height: 1; filter: grayscale(.55); }
.tab[aria-selected="true"] { color: var(--seal); background: var(--seal-soft); font-weight: 600; }
.tab[aria-selected="true"] .tab-ico { filter: none; }
.tab-badge {
  position: absolute; top: 6px; left: 50%; margin-left: 4px;
  min-width: 18px; height: 18px; padding: 0 5px;
  border-radius: 9px; background: var(--seal); color: #fff;
  font-size: .62rem; line-height: 18px; text-align: center;
}

/* ---------------------------------------------------------------- ③ 组件 */

/* 通用卡片 */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* 年级胶囊条 */
.chipbar {
  position: sticky; top: 55px; z-index: 20;
  margin: -12px -12px 10px;
  padding: 8px 12px;
  background: color-mix(in srgb, var(--paper) 90%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line-2);
}
.chips { display: flex; gap: 7px; overflow-x: auto; scrollbar-width: none; padding-bottom: 2px; }
.chips::-webkit-scrollbar { display: none; }
.chip {
  position: relative;
  flex: none;
  min-height: 40px;
  padding: 7px 13px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-2);
  font-size: .86rem;
  white-space: nowrap;
  display: inline-flex; align-items: center; gap: 6px;
}
.chip:active { transform: scale(.97); }
.chip[aria-pressed="true"] {
  background: var(--ink); color: var(--paper-2); border-color: var(--ink); font-weight: 600;
}
.chip .chip-badge {
  font-size: .66rem; color: var(--ink-3);
  background: var(--paper); border-radius: 999px; padding: 1px 6px;
}
.chip[aria-pressed="true"] .chip-badge { background: rgba(255, 255, 255, .18); color: inherit; }
.chip.is-done::after {
  content: "✓"; position: absolute; top: -3px; right: -2px;
  width: 15px; height: 15px; border-radius: 50%;
  background: var(--jade); color: #fff; font-size: .58rem; line-height: 15px; text-align: center;
}

/* 筛选行 */
.filters { display: flex; gap: 7px; flex-wrap: wrap; margin-bottom: 12px; padding: 0 2px; }
.filters .chip { min-height: 34px; padding: 4px 11px; font-size: .8rem; }

/* 概览卡 */
.overview { padding: 13px 14px; margin-bottom: 14px; }
.overview-head { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.overview-head h2 { font-size: 1.04rem; font-family: var(--font-poem); letter-spacing: .06em; }
.overview-head .meta { font-size: .76rem; color: var(--ink-3); margin-left: auto; }
.bar {
  position: relative; height: 9px; margin: 10px 0 8px;
  background: var(--line-2); border-radius: 999px; overflow: hidden;
}
.bar > i { display: block; height: 100%; width: 0; border-radius: 999px; background: var(--jade); transition: width .3s ease; }
.bar.lv > i { background: var(--seal); }
.legend { display: flex; gap: 12px; flex-wrap: wrap; font-size: .74rem; color: var(--ink-2); }
.legend span { display: inline-flex; align-items: center; gap: 5px; }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.dot.lv1 { background: var(--lv1); } .dot.lv2 { background: var(--lv2); }
.dot.lv3 { background: var(--lv3); } .dot.lv4 { background: var(--lv4); }
.dot.lv0 { background: var(--line); border: 1px solid var(--ink-3); }

/* 分组标题 */
.group { margin: 16px 0 8px; display: flex; align-items: center; gap: 8px; }
.group h3 {
  font-size: .82rem; letter-spacing: .16em; font-weight: 700; color: var(--ink-2);
  display: inline-flex; align-items: center; gap: 7px;
}
.group h3::before { content: ""; width: 3px; height: 1em; border-radius: 2px; background: var(--seal); }
.group.k-opt h3::before { background: var(--jade); }
.group.k-saying h3::before { background: var(--gold); }
.group .count { font-size: .72rem; color: var(--ink-3); }
.group .group-note { font-size: .72rem; color: var(--ink-3); margin-left: auto; text-align: right; }

/* 篇目列表 */
.list { display: grid; gap: 9px; }
@media (min-width: 760px) { .list { grid-template-columns: 1fr 1fr; } }

.poem {
  padding: 11px 13px 9px;
  cursor: pointer;
  transition: border-color .15s ease, transform .12s ease;
}
.poem:hover { border-color: var(--seal); }
.poem:active { transform: scale(.995); }
.poem-head { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.poem-title { font-family: var(--font-poem); font-size: 1.08rem; font-weight: 700; letter-spacing: .05em; }
.poem-author { font-size: .76rem; color: var(--ink-3); }
.tagline { margin-left: auto; display: flex; gap: 4px; align-items: center; }
.tag {
  font-size: .64rem; padding: 1px 7px; border-radius: 999px;
  border: 1px solid var(--line); color: var(--ink-3); background: var(--paper-2);
}
.tag.req { color: var(--seal); border-color: color-mix(in srgb, var(--seal) 35%, var(--line)); }
.tag.opt { color: var(--jade); border-color: color-mix(in srgb, var(--jade) 35%, var(--line)); }
/* 古文（初中文言文）用第三种颜色，一眼能和古诗分开 */
.tag.prose { color: #4a5a86; border-color: color-mix(in srgb, #4a5a86 35%, var(--line)); }
html[data-theme="dark"] .tag.prose { color: #9fb4e6; border-color: color-mix(in srgb, #9fb4e6 35%, var(--line)); }
.tag.form { color: var(--ink-2); }
.tag.apx { color: var(--gold); border-color: color-mix(in srgb, var(--gold) 35%, var(--line)); }

.poem-body {
  font-family: var(--font-poem);
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.85;
  letter-spacing: .045em;
  color: var(--ink-2);
  margin: 6px 0 4px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.poem-body .ln { display: block; }
.poem-body.muted { color: var(--ink-3); font-size: .88rem; }
/* 文言文：卡片上左对齐、字号小一点，否则两段就把卡片撑得很高 */
.poem-body.prose {
  font-size: .82rem; line-height: 1.75; letter-spacing: .01em;
  text-align: left; -webkit-line-clamp: 3;
}

.poem-foot { display: flex; align-items: center; gap: 8px; margin-top: 6px; }
.poem-foot .level-word { font-size: .72rem; color: var(--ink-3); }

/* 熟练度星标（每首诗都能点） */
.stars { display: inline-flex; align-items: center; gap: 3px; }
.star {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  background: none; border: 0; border-radius: 9px;
  color: var(--line); font-size: 1.12rem; line-height: 1;
  transition: transform .1s ease, color .15s ease;
}
.star:hover { background: var(--paper-2); }
.star:active { transform: scale(.85); }
.star.on { color: var(--gold); }
.stars[data-level="1"] .star.on { color: var(--lv1); }
.stars[data-level="2"] .star.on { color: var(--lv2); }
.stars[data-level="3"] .star.on { color: var(--lv3); }
.stars[data-level="4"] .star.on { color: var(--lv4); }
.stars.big .star { width: 44px; height: 44px; font-size: 1.5rem; }

.note-line {
  margin-top: 6px; font-size: .72rem; color: var(--ink-3);
  background: var(--paper-2); border-left: 2px solid var(--line); padding: 3px 8px; border-radius: 0 6px 6px 0;
}

/* 名句卡 */
.saying { padding: 10px 13px 8px; }
.saying-text { font-family: var(--font-poem); font-size: 1rem; font-weight: 500; letter-spacing: .04em; line-height: 1.8; }
.saying-source { font-size: .74rem; color: var(--ink-3); margin-top: 2px; }

/* 搜索命中扩展内容的提示行 */
.hit-line {
  margin: 6px 0 0; padding: 5px 9px; border-radius: 8px;
  background: var(--paper-2); border-left: 2px solid var(--gold);
  font-size: .78rem; line-height: 1.6; color: var(--ink-2);
}
.hit-line b { color: var(--ink-3); font-weight: 600; margin-right: 6px; }
.search-hint { font-size: .72rem; color: var(--ink-3); margin: -4px 2px 10px; line-height: 1.6; }

/* 空状态 */
.empty { padding: 46px 20px; text-align: center; color: var(--ink-3); }
.empty .big { font-size: 2rem; display: block; margin-bottom: 8px; }

/* 段落标题（视图内） */
.section-title { display: flex; align-items: center; gap: 8px; margin: 4px 2px 10px; }
.section-title h2 { font-size: 1.06rem; font-family: var(--font-poem); letter-spacing: .06em; }
.section-title .sub { font-size: .74rem; color: var(--ink-3); margin-left: auto; }

/* 搜索框 */
.searchbox { display: flex; gap: 8px; align-items: center; margin-bottom: 12px; }
.searchbox input {
  flex: 1; min-height: var(--tap);
  padding: 0 14px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  font: inherit; color: inherit;
  box-shadow: var(--shadow);
}
.searchbox input:focus { outline: 2px solid color-mix(in srgb, var(--seal) 45%, transparent); outline-offset: 1px; }

/* 统计页 */
.stat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 9px; margin-bottom: 14px; }
@media (min-width: 620px) { .stat-grid { grid-template-columns: repeat(4, 1fr); } }
.stat { padding: 11px 12px; text-align: center; }
.stat .num { font-size: 1.5rem; font-weight: 700; font-family: var(--font-poem); line-height: 1.25; }
.stat .lbl { font-size: .72rem; color: var(--ink-3); }
.stat.lv4 .num { color: var(--lv4); } .stat.lv3 .num { color: var(--lv3); }
.stat.lv2 .num { color: var(--lv2); } .stat.lv1 .num { color: var(--lv1); }

.book-rows { display: grid; gap: 6px; }
.book-row {
  display: grid; grid-template-columns: 5.4em 1fr auto;
  align-items: center; gap: 10px;
  padding: 8px 11px;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-sm);
  text-align: left;
}
.book-row:hover { border-color: var(--seal); }
.book-row .bk { font-size: .82rem; font-weight: 600; white-space: nowrap; }
.book-row .bar { margin: 0; }
.book-row .pc { font-size: .72rem; color: var(--ink-3); font-variant-numeric: tabular-nums; }
.book-stage { margin-bottom: 14px; }
.book-stage h3 {
  display: flex; align-items: center; gap: 8px;
  font-size: .86rem; letter-spacing: .06em; margin: 0 2px 7px;
}
.book-stage h3 .count { font-size: .7rem; font-weight: 400; color: var(--ink-3); margin-left: auto; }

/* ---- 学段选择（古诗词主页 = 二级目录第一级） ---- */
.hero {
  display: flex; align-items: center; gap: 14px;
  padding: 16px 16px; margin-bottom: 16px;
  background:
    radial-gradient(600px 240px at 100% 0%, rgba(165, 42, 42, .08), transparent 65%),
    var(--card);
}
.hero-seal {
  flex: none; width: 54px; height: 54px; border-radius: 12px;
  display: grid; place-items: center;
  background: var(--seal); color: #fff;
  font-family: var(--font-poem); font-size: 1.7rem; font-weight: 700;
  box-shadow: var(--shadow);
}
.hero-title { font-family: var(--font-poem); font-size: 1.32rem; letter-spacing: .1em; }
.hero-sub { font-size: .76rem; color: var(--ink-3); margin-top: 4px; line-height: 1.65; }

.stage-list { display: grid; gap: 11px; }
@media (min-width: 700px) { .stage-list { grid-template-columns: 1fr 1fr; } }
.stage-card {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 14px 14px; text-align: left;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
  transition: border-color .15s ease, transform .12s ease;
}
.stage-card:hover { border-color: var(--seal); }
.stage-card:active { transform: scale(.99); }
.stage-emoji { flex: none; font-size: 2rem; line-height: 1.1; }
.stage-body { flex: 1 1 auto; min-width: 0; display: flex; flex-direction: column; gap: 3px; }
.stage-head { display: flex; align-items: baseline; gap: 8px; }
.stage-title { font-family: var(--font-poem); font-size: 1.16rem; font-weight: 700; letter-spacing: .08em; }
.stage-pc { font-size: .7rem; color: var(--ink-3); margin-left: auto; font-variant-numeric: tabular-nums; }
.stage-desc { font-size: .78rem; color: var(--ink-2); line-height: 1.6; }
.stage-meta { font-size: .72rem; color: var(--ink-3); }
.stage-body .bar { margin: 7px 0 6px; height: 7px; }
.stage-books { display: flex; flex-wrap: wrap; gap: 4px; }
.mini-chip {
  font-size: .64rem; padding: 1px 6px; border-radius: 6px;
  background: var(--paper-2); border: 1px solid var(--line-2); color: var(--ink-3);
}
.stage-arrow { flex: none; align-self: center; font-size: 1.5rem; color: var(--seal); }

/* 表单与按钮 */
.panel { padding: 14px; margin-bottom: 14px; }
.panel h2 { font-size: .96rem; margin-bottom: 4px; }
.panel p.hint { font-size: .74rem; color: var(--ink-3); margin-bottom: 10px; line-height: 1.6; }
.field { display: flex; gap: 8px; flex-wrap: wrap; }
.field input[type="text"] {
  flex: 1 1 160px; min-height: var(--tap); padding: 0 12px;
  background: var(--paper-2); border: 1px solid var(--line); border-radius: 11px;
  font: inherit; color: inherit;
}
.btn {
  min-height: var(--tap); padding: 0 15px;
  background: var(--card); border: 1px solid var(--line); border-radius: 11px;
  font-size: .88rem; display: inline-flex; align-items: center; justify-content: center; gap: 6px;
}
.btn:hover { border-color: var(--seal); }
.btn:active { transform: scale(.97); }
.btn.primary { background: var(--seal); color: #fff; border-color: var(--seal); font-weight: 600; }
.btn.ghost { background: transparent; }
.btn.danger { color: var(--seal); border-color: color-mix(in srgb, var(--seal) 40%, var(--line)); }
.btn.tiny { min-height: 36px; padding: 0 11px; font-size: .8rem; }
.btn[disabled] { opacity: .5; pointer-events: none; }
/* .btn 自己设了 display:inline-flex，会盖掉 [hidden] 的 display:none（作者样式优先于 UA 样式）——
   搜索框那个「清除」按钮就靠这一条才会真的隐藏 */
.btn[hidden] { display: none; }
.btn-row { display: flex; gap: 8px; flex-wrap: wrap; }
.seg { display: inline-flex; background: var(--paper-2); border: 1px solid var(--line); border-radius: 11px; padding: 3px; gap: 3px; }
.seg button { min-height: 38px; padding: 0 13px; border: 0; background: none; border-radius: 8px; font-size: .84rem; color: var(--ink-2); }
.seg button[aria-pressed="true"] { background: var(--card); color: var(--seal); font-weight: 600; box-shadow: var(--shadow); }

.profile-chips { display: flex; gap: 7px; flex-wrap: wrap; margin-top: 10px; }

/* 详情浮层 */
.sheet { position: fixed; inset: 0; z-index: 60; display: flex; align-items: flex-end; justify-content: center; }
.sheet[hidden] { display: none; }
.sheet-mask { position: absolute; inset: 0; background: rgba(20, 16, 10, .45); backdrop-filter: blur(2px); }
.sheet-panel {
  position: relative;
  width: 100%; max-width: 640px;
  max-height: 88vh;
  display: flex; flex-direction: column;
  background: var(--card);
  border: 1px solid var(--line);
  border-bottom: 0;
  border-radius: 20px 20px 0 0;
  box-shadow: var(--shadow-lg);
  animation: rise .22s ease;
}
@keyframes rise { from { transform: translateY(14px); opacity: .4; } to { transform: none; opacity: 1; } }
@media (min-width: 760px) {
  .sheet { align-items: center; }
  .sheet-panel { border-radius: 20px; border-bottom: 1px solid var(--line); max-height: 84vh; }
  .sheet-grip { display: none; }
}
.sheet-grip { width: 44px; height: 5px; border-radius: 3px; background: var(--line); margin: 8px auto 2px; flex: none; }
.sheet-body { overflow-y: auto; padding: 10px 18px calc(18px + env(safe-area-inset-bottom)); }

.detail-head { text-align: center; padding: 6px 0 12px; border-bottom: 1px solid var(--line-2); }
.detail-title { font-family: var(--font-poem); font-size: 1.5rem; font-weight: 700; letter-spacing: .08em; }
.detail-author { font-size: .84rem; color: var(--ink-3); margin-top: 4px; }
.detail-tags { display: flex; justify-content: center; gap: 6px; flex-wrap: wrap; margin-top: 9px; }
.detail-poem {
  font-family: var(--font-poem);
  font-size: 1.22rem; font-weight: 500; line-height: 2.1; letter-spacing: .07em;
  text-align: center; padding: 20px 4px 14px; color: var(--ink);
}
.detail-poem .ln { display: block; }
/* 文言文：左对齐、字号收一点，长段落读起来才不累 */
.detail-poem.prose {
  font-size: 1.02rem; line-height: 1.95; letter-spacing: .03em;
  text-align: left; padding: 16px 2px 12px;
}
.detail-poem.prose .ln { margin-bottom: 8px; }
.detail-note { font-size: .76rem; color: var(--ink-3); text-align: center; padding-bottom: 10px; }

/* ---- 详情里的扩展内容：赏析 / 创作背景 / 作者介绍 / 关联篇目 ---- */
.x-wrap { margin-top: 16px; border-top: 1px dashed var(--line); padding-top: 12px; }
.x-head {
  font-size: .76rem; letter-spacing: .18em; color: var(--ink-3);
  display: flex; align-items: center; gap: 8px; margin-bottom: 8px;
}
.x-head::after { content: ""; flex: 1; height: 1px; background: var(--line-2); }
.x-block {
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  background: var(--card-2); margin-bottom: 8px; overflow: hidden;
}
.x-block > summary {
  list-style: none; cursor: pointer;
  padding: 9px 12px; font-size: .86rem; font-weight: 600; color: var(--ink);
  display: flex; align-items: center; gap: 8px;
}
.x-block > summary::-webkit-details-marker { display: none; }
.x-block > summary::before {
  content: ""; width: 3px; height: 1em; border-radius: 2px; background: var(--seal); flex: none;
}
.x-block > summary::after { content: "▾"; margin-left: auto; color: var(--ink-3); font-size: .72rem; transition: transform .15s ease; }
.x-block[open] > summary::after { transform: rotate(180deg); }
.x-block[open] > summary { border-bottom: 1px solid var(--line-2); }
.x-body { padding: 10px 12px 12px; }
.x-text { font-size: .88rem; line-height: 1.85; color: var(--ink); text-align: justify; }
.x-meta { font-size: .72rem; color: var(--ink-3); margin-top: 6px; }
.x-loading { font-size: .8rem; color: var(--ink-3); padding: 8px 2px; }
.x-themes { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; margin: 2px 0 10px; }
.x-themes .x-label { font-size: .72rem; color: var(--ink-3); }

.rel-chips { display: flex; gap: 7px; flex-wrap: wrap; }
.rel-chip {
  display: inline-flex; flex-direction: column; align-items: flex-start; gap: 1px;
  padding: 7px 11px; border: 1px solid var(--line); border-radius: var(--radius-sm);
  background: var(--card); text-align: left; max-width: 100%;
}
.rel-chip:hover { border-color: var(--seal); }
.rel-chip .rc-t { font-family: var(--font-poem); font-size: .88rem; font-weight: 600; }
.rel-chip .rc-a, .rel-chip .rc-b { font-size: .66rem; color: var(--ink-3); }

.level-picker { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; }
.level-opt {
  padding: 9px 3px 7px; border: 1px solid var(--line); border-radius: 12px; background: var(--paper-2);
  display: flex; flex-direction: column; align-items: center; gap: 3px;
}
.level-opt .lbl { font-size: .74rem; }
.level-opt .hint { font-size: .58rem; color: var(--ink-3); text-align: center; line-height: 1.3; }
.level-opt[aria-pressed="true"] { border-color: var(--seal); background: var(--seal-soft); box-shadow: var(--shadow); }
.level-opt[aria-pressed="true"] .lbl { font-weight: 700; color: var(--seal); }
.detail-actions { display: flex; gap: 8px; margin-top: 14px; }
.detail-actions .btn { flex: 1; }
.detail-nav { display: flex; gap: 8px; margin-top: 8px; }

/* 吐司提示 */
.toast {
  position: fixed;
  left: 50%; bottom: calc(var(--tabbar-h) + 18px + env(safe-area-inset-bottom));
  transform: translateX(-50%);
  z-index: 90;
  max-width: 90vw;
  padding: 9px 15px;
  background: var(--ink); color: var(--paper-2);
  border-radius: 999px; font-size: .8rem;
  box-shadow: var(--shadow-lg);
  animation: rise .18s ease;
}
.toast[hidden] { display: none; }

/* 打印：把当前年级整册打成纸质朗读单 */
@media print {
  :root { --paper: #fff; --card: #fff; --ink: #000; --ink-2: #222; --ink-3: #555; --line: #bbb; --shadow: none; }
  .topbar, .tabbar, .chipbar, .filters, .sheet, .toast, .btn, .stars, .stat-grid, .panel { display: none !important; }
  .view { padding: 0; }
  .app { max-width: none; padding: 0; }
  .list { grid-template-columns: 1fr !important; gap: 0; }
  .poem, .card { break-inside: avoid; border: 0; border-bottom: 1px dashed #999; border-radius: 0; box-shadow: none; padding: 6px 0; }
  .poem-body { -webkit-line-clamp: unset; display: block; color: #000; }
  .overview { border: 1px solid #999; padding: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

/* 备案信息（京ICP备…号-1）：页面底部居中、链接给足点击热区、窄屏不溢出 */
.beian-foot {
  margin: 22px auto 6px;
  padding-top: 14px;
  max-width: 560px;
  border-top: 1px solid var(--line);
  text-align: center;
}
.beian-foot__line { margin: 0; font-size: .76rem; line-height: 1.7; }
.beian-foot__line a {
  display: inline-block;
  padding: 4px 2px;
  color: var(--ink-3);
  text-decoration: none;
  word-break: break-word;
}
.beian-foot__line a:hover { color: var(--seal); text-decoration: underline; }