/* ===== easyEnglish 精读站 共享样式 ===== */
:root{
  --bg:#f6f8fc; --bg2:#ffffff; --ink:#1a2433; --muted:#6b7a90;
  --rule:#e4e9f2; --accent:#4f7cff; --accent2:#ff8a5b;
  --ipa:#8a5cf6; --cn:#0f9d76;
  /* 语法成分颜色 */
  --c-sub:#2563eb;   /* 主语 */
  --c-verb:#dc2626;  /* 谓语/系动词 */
  --c-obj:#16a34a;   /* 宾语 */
  --c-pred:#7c3aed;  /* 表语 */
  --c-adv:#000000;   /* 状语 */
  --c-attr:#0891b2;  /* 定语 */
  --c-conj:#94a3b8;  /* 连词 */
}
*{box-sizing:border-box;margin:0;padding:0}
body{
  font-family:"Segoe UI","Microsoft YaHei",system-ui,sans-serif;
  background:var(--bg); color:var(--ink); line-height:1.7;
  padding:0 0 4rem 0;
}
.wrap{max-width:980px;margin:0 auto;padding:0 1.2rem}
header.hero{
  background:linear-gradient(135deg,#4f7cff 0%,#7c5cff 100%);
  color:#fff; padding:3rem 1.2rem 2.4rem; text-align:center;
}
header.hero h1{font-size:1.9rem;font-weight:700;letter-spacing:.5px}
header.hero p{margin-top:.5rem;opacity:.9;font-size:.95rem}
.legend{
  display:flex;flex-wrap:wrap;gap:.6rem;justify-content:center;
  margin-top:1.2rem;font-size:.78rem;
}
.legend span{background:rgba(255,255,255,.18);padding:.25rem .7rem;border-radius:20px}
/* 语法成分图例 */
.role-legend{
  background:var(--bg2);border:1px solid var(--rule);border-radius:12px;
  padding:.9rem 1.2rem;margin:1.4rem 0;
}
.role-legend h2{font-size:.9rem;color:var(--muted);margin-bottom:.6rem}
.role-legend .items{display:flex;flex-wrap:wrap;gap:.5rem .9rem;font-size:.82rem}
.role-legend .chip{display:inline-flex;align-items:center;gap:.35rem}
.role-legend .dot{width:.85rem;height:.85rem;border-radius:4px;flex-shrink:0}
.toc{
  background:var(--bg2);border:1px solid var(--rule);border-radius:12px;
  padding:1rem 1.4rem;margin:1.4rem 0;
}
.toc h2{font-size:1rem;color:var(--muted);margin-bottom:.6rem}
.toc ol{padding-left:1.3rem;columns:2;font-size:.88rem}
.toc li{margin-bottom:.25rem}
.toc a{color:var(--accent);text-decoration:none}
.toc a:hover{text-decoration:underline}
section.para{margin:2.2rem 0}
.para-title{
  font-size:1.15rem;font-weight:700;color:var(--accent);
  border-left:4px solid var(--accent);padding-left:.7rem;margin-bottom:1rem;
}
article.sent{
  background:var(--bg2);border:1px solid var(--rule);border-radius:12px;
  padding:1.1rem 1.3rem 1.2rem;margin-bottom:1.1rem;
}
.sent-head{display:flex;align-items:center;gap:.6rem;margin-bottom:.7rem}
.sent-no{
  background:var(--accent);color:#fff;font-size:.75rem;font-weight:700;
  width:1.7rem;height:1.7rem;border-radius:50%;display:flex;
  align-items:center;justify-content:center;flex-shrink:0;
}
/* interlinear gloss */
.gloss{display:flex;flex-wrap:wrap;align-items:flex-end;gap:.15rem .18rem}
.w{display:inline-flex;flex-direction:column;align-items:center;padding:.1rem .2rem;border-radius:5px;min-width:1.6rem;cursor:default;transition:background .15s}
.w:hover{background:#eef2f9}
.w .en{font-size:1.04rem;font-weight:700;color:var(--ink)}
.w .ipa{font-size:.7rem;color:var(--ipa);font-family:"Doulos Sil","Charis SIL",Georgia,serif;white-space:nowrap}
.w .cn{font-size:.72rem;color:var(--cn);font-weight:600;min-height:.9rem;text-align:center}
.w .cn.blank{visibility:hidden}
/* 单词可点击朗读 */
.gloss .w{cursor:pointer}
.w.speaking{background:#fff3cd;border-radius:4px;box-shadow:0 0 0 2px #ffd700}
/* 语法成分着色 */
.w.r-sub .en{color:var(--c-sub)}
.w.r-verb .en{color:var(--c-verb)}
.w.r-obj .en{color:var(--c-obj)}
.w.r-pred .en{color:var(--c-pred)}
.w.r-adv .en{color:var(--c-adv)}
.w.r-attr .en{color:var(--c-attr)}
.w.r-conj .en{color:var(--c-conj)}
/* 朗读时高亮当前句 */
.gloss.playing .w{opacity:.85}
.gloss.playing{background:#f0f4ff;border-radius:8px}
/* 播放按钮 */
.play-row{margin-top:.65rem;display:flex;align-items:center;gap:.6rem;flex-wrap:wrap}
.play-btn{
  display:inline-flex;align-items:center;gap:.4rem;
  background:linear-gradient(135deg,#4f7cff,#7c5cff);color:#fff;
  border:none;border-radius:22px;padding:.4rem 1rem;
  font-size:.82rem;font-weight:600;cursor:pointer;
  transition:all .2s;font-family:inherit;
}
.play-btn:hover{transform:translateY(-1px);box-shadow:0 4px 14px rgba(79,124,255,.4)}
.play-btn:active{transform:translateY(0)}
.play-btn.playing{background:linear-gradient(135deg,#ff8a5b,#ff6b6b)}
.play-btn .icon{font-size:.95rem;line-height:1}
.play-hint{font-size:.74rem;color:var(--muted)}
/* translation */
.trans{
  margin-top:.85rem;padding:.6rem .9rem;background:#f0faf6;
  border-left:3px solid var(--cn);border-radius:0 8px 8px 0;
  font-size:.98rem;color:#15573f;
}
.trans b{color:var(--cn)}
/* grammar */
.grammar{
  margin-top:.7rem;padding:.65rem .9rem;background:#f5f3ff;
  border-left:3px solid var(--ipa);border-radius:0 8px 8px 0;font-size:.86rem;
}
.grammar .label{font-weight:700;color:var(--ipa)}
.grammar .tag{
  display:inline-block;background:var(--ipa);color:#fff;font-size:.72rem;
  padding:.05rem .5rem;border-radius:10px;margin:0 .2rem .2rem 0;
}
/* phrases */
.phrases{margin-top:.6rem;font-size:.85rem}
.phrases .label{font-weight:700;color:var(--accent2)}
.phrase{
  display:inline-block;background:#fff2ec;border:1px solid #ffd6c2;
  color:#c44a17;border-radius:6px;padding:.15rem .6rem;margin:.15rem .25rem 0 0;
  font-size:.82rem;
}
/* 显示控制工具栏 */
.toggle-bar{
  background:var(--bg2);border:1px solid var(--rule);border-radius:12px;
  padding:.7rem 1rem;margin:1.4rem 0;display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;
  position:sticky;top:0;z-index:30;box-shadow:0 2px 10px rgba(26,36,51,.06);
}
.tb-label{font-size:.82rem;color:var(--muted);font-weight:600;margin-right:.2rem}
.tg{
  border:1px solid var(--rule);background:var(--bg);color:var(--muted);
  border-radius:18px;padding:.34rem .9rem;font-size:.8rem;font-weight:600;
  cursor:pointer;font-family:inherit;transition:all .15s;
}
.tg:hover{transform:translateY(-1px);border-color:var(--accent)}
.tg.active{background:var(--accent);color:#fff;border-color:var(--accent)}
/* 各类内容隐藏（通过 body 类控制） */
body.hide-ipa .ipa{display:none}
body.hide-cn .cn{display:none}
body.hide-trans .trans{display:none}
body.hide-grammar .grammar{display:none}
body.hide-phrases .phrases{display:none}
footer{text-align:center;padding:2rem 1rem;color:var(--muted);font-size:.82rem}
/* 站点导航 / 返回首页 */
.site-nav{max-width:980px;margin:0 auto;padding:.7rem 1.2rem;display:flex;align-items:center;justify-content:space-between;font-size:.85rem}
.site-nav a{color:var(--accent);text-decoration:none;font-weight:600}
.site-nav a:hover{text-decoration:underline}
.brand{font-weight:700;color:var(--ink);text-decoration:none}
.brand:hover{text-decoration:none}
/* 首页文章卡片 */
.home-hero{text-align:center;padding:2.4rem 1rem 1rem}
.home-hero h1{font-size:1.8rem;font-weight:700}
.home-hero p{color:var(--muted);margin-top:.4rem}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1rem;margin:1.4rem 0}
.card{background:var(--bg2);border:1px solid var(--rule);border-radius:12px;padding:1.1rem 1.2rem;transition:all .2s;text-decoration:none;color:inherit;display:flex;flex-direction:column;gap:.4rem}
.card:hover{transform:translateY(-2px);box-shadow:0 6px 18px rgba(79,124,255,.15);border-color:var(--accent)}
.card .c-title{font-size:1.05rem;font-weight:700;color:var(--accent)}
.card .c-desc{font-size:.85rem;color:var(--muted)}
.card .c-meta{font-size:.74rem;color:var(--muted);margin-top:.2rem}
/* 认证页面 */
.auth-card{
  background:var(--bg2);border:1px solid var(--rule);border-radius:14px;
  padding:2rem 1.8rem;margin:2rem 0;box-shadow:0 4px 20px rgba(26,36,51,.06);
}
.auth-card h1{font-size:1.4rem;color:var(--accent);text-align:center;margin-bottom:.3rem}
.auth-sub{text-align:center;color:var(--muted);font-size:.85rem;margin-bottom:1.5rem}
.auth-link{text-align:center;margin-top:1.2rem;font-size:.85rem;color:var(--muted)}
.auth-link a{color:var(--accent);text-decoration:none;font-weight:600}
.form-group{margin-bottom:1rem}
.form-group label{display:block;font-weight:600;margin-bottom:.35rem;font-size:.88rem}
/* flash 消息 */
.flash-container{max-width:980px;margin:0 auto;padding:.5rem 1.2rem 0}
.flash{
  padding:.6rem 1rem;border-radius:8px;font-size:.88rem;margin-bottom:.5rem;
}
.flash-error{background:#fef2f2;border:1px solid #fca5a5;color:#991b1b}
.flash-success{background:#f0fdf4;border:1px solid #86efac;color:#166534}
/* 导航栏用户信息 */
.nav-user{
  font-size:.82rem;color:var(--muted);font-weight:600;
  background:var(--bg2);border:1px solid var(--rule);
  padding:.2rem .6rem;border-radius:16px;
}
.logout-link{color:#dc2626!important}
/* 录音按钮 */
.rec-btn{
  display:inline-flex;align-items:center;gap:.4rem;
  background:var(--bg2);color:#dc2626;border:1.5px solid #fca5a5;
  border-radius:22px;padding:.4rem 1rem;font-size:.82rem;font-weight:600;
  cursor:pointer;transition:all .2s;font-family:inherit;
}
.rec-btn:hover{border-color:#dc2626;background:#fef2f2}
.rec-btn.recording{
  background:#dc2626;color:#fff;border-color:#dc2626;
  animation:pulse 1.2s infinite;
}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.7}}
/* 语速控制 */
.speed-group{margin-left:auto;display:flex;align-items:center;gap:.3rem}
/* 朗读全文 */
.play-all-btn{font-weight:700;color:var(--accent)!important;border:1.5px solid var(--accent)!important;background:var(--bg2)!important}
.play-all-btn.playing{background:var(--accent)!important;color:#fff!important}
/* 朗读全文时高亮当前句 */
.sent.playing-all{background:#f0f7ff;border-radius:8px;box-shadow:0 0 0 2px #93c5fd}
/* 不匹配单词 */
.w.unmatched{background:#fee2e2!important;border-radius:4px;box-shadow:0 0 0 1.5px #f87171}
/* 录音评分 */
.rec-score{
  display:inline-flex;align-items:center;gap:.3rem;
  font-size:.78rem;font-weight:700;padding:.25rem .7rem;border-radius:16px;
}
.rec-score.high{background:#dcfce7;color:#166534;border:1px solid #86efac}
.rec-score.mid{background:#fef9c3;color:#854d0e;border:1px solid #fde047}
.rec-score.low{background:#fef2f2;color:#991b1b;border:1px solid #fca5a5}
/* 语法总结例句 */
.grammar-example{
  margin-top:.6rem;padding:.8rem 1rem;border-left:3px solid var(--accent);
  background:var(--bg2);border-radius:0 8px 8px 0;
}
.example-label{font-size:.8rem;color:var(--muted);margin:0 0 .3rem 0;font-weight:600}
.example-text{
  font-size:.95rem;color:var(--ink);font-style:italic;margin:0 0 .5rem 0;
  line-height:1.5;
}
.example-detail{
  font-size:.88rem;color:var(--muted);margin:0;line-height:1.7;
}
.play-rec-btn{
  display:inline-flex;align-items:center;gap:.4rem;
  background:var(--bg2);color:#0f9d76;border:1.5px solid #6ee7b7;
  border-radius:22px;padding:.4rem 1rem;font-size:.82rem;font-weight:600;
  cursor:pointer;transition:all .2s;font-family:inherit;
}
.play-rec-btn:hover{border-color:#0f9d76;background:#f0fdf4}
/* 语法总结 */
.grammar-summary{
  background:var(--bg2);border:1px solid var(--rule);border-radius:12px;
  padding:0;margin:1.4rem 0;overflow:hidden;
}
.grammar-summary > .collapsible-body{padding:0 1.4rem 1.2rem}

/* 可折叠区域通用样式 */
.collapsible-section{
  background:var(--bg2);border:1px solid var(--rule);border-radius:12px;
  margin:1.4rem 0;overflow:hidden;
}
.collapsible-header{
  display:flex;align-items:center;justify-content:space-between;
  padding:1rem 1.4rem;cursor:pointer;list-style:none;
  user-select:none;transition:background .15s;
}
.collapsible-header::-webkit-details-marker{display:none}
.collapsible-header:hover{background:#f8faff}
.collapsible-header h2{
  font-size:1.1rem;font-weight:700;color:var(--accent);
  border-left:4px solid var(--accent);padding-left:.7rem;margin:0;
}
.collapse-icon{
  font-size:.75rem;color:var(--muted);transition:transform .2s;
}
details[open] .collapse-icon{transform:rotate(0deg)}
details:not([open]) .collapse-icon{transform:rotate(-90deg)}
.collapsible-body{padding:0 1.4rem 1.2rem}

/* 全文原文与译文 */
.full-text-section .collapsible-body{padding:0 1.4rem 1.2rem}
.full-para{
  margin-bottom:1rem;padding-bottom:1rem;
  border-bottom:1px dashed var(--rule);
}
.full-para:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}
.full-para-title{
  font-size:.88rem;font-weight:600;color:var(--accent);
  margin-bottom:.4rem;
}
.full-en{
  font-size:1.02rem;line-height:1.85;color:var(--ink);
  margin-bottom:.5rem;
}
.full-cn{
  font-size:.96rem;line-height:1.85;color:var(--muted);
}
.grammar-item{
  background:#f8f7ff;border:1px solid #e8e5ff;border-radius:8px;
  padding:.8rem 1rem;margin-bottom:.7rem;
}
.grammar-item h3{font-size:.95rem;color:var(--ipa);margin-bottom:.3rem}
.grammar-item p{font-size:.85rem;color:var(--ink);line-height:1.6}
@media(max-width:640px){
  .toc ol{columns:1}
  .role-legend .items{gap:.4rem .7rem}
  .w .en{font-size:.95rem}
  .w .ipa{font-size:.64rem}
  .cards{grid-template-columns:1fr}
}
@media print{
  body{background:#fff}
  header.hero{background:#4f7cff!important;-webkit-print-color-adjust:exact;print-color-adjust:exact}
  article.sent{break-inside:avoid}
  .play-btn{display:none}
  .toggle-bar,.site-nav{display:none}
}