/* ============================================================
 * 中考英语阅读真题汇编 · 样式
 * ============================================================ */
:root{
  --c-primary:#4A6CF7;
  --c-primary-d:#3A57D9;
  --c-primary-l:#EEF2FF;
  --c-bg:#F5F7FA;
  --c-card:#FFFFFF;
  --c-text:#2D3436;
  --c-text-sub:#6B7280;
  --c-border:#E8ECF1;
  --c-green:#16A34A;
  --c-green-l:#E8F8EF;
  --c-red:#E74C3C;
  --c-orange:#E67E22;
  --c-purple:#9B59B6;
  --c-blue:#3498DB;
  --c-teal:#1ABC9C;
  --shadow:0 4px 16px rgba(74,108,247,.08);
  --shadow-lg:0 8px 28px rgba(74,108,247,.14);
  --radius:16px;
}
*{margin:0;padding:0;box-sizing:border-box;}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",Roboto,sans-serif;
  background:var(--c-bg);color:var(--c-text);line-height:1.7;-webkit-font-smoothing:antialiased;
}
.app{max-width:820px;margin:0 auto;min-height:100vh;background:var(--c-bg);}

/* ---------- 顶部封面 ---------- */
.cover{
  background:linear-gradient(135deg,#4A6CF7 0%,#6B8AFA 50%,#8A6CFA 100%);
  color:#fff;padding:48px 24px 40px;text-align:center;box-shadow:0 4px 20px rgba(74,108,247,.3);
}
.cover-icon{font-size:48px;margin-bottom:12px;}
.cover h1{font-size:28px;font-weight:800;letter-spacing:1px;margin-bottom:8px;}
.cover-sub{font-size:15px;opacity:.9;margin-bottom:18px;}
.cover-meta{display:flex;gap:24px;justify-content:center;flex-wrap:wrap;font-size:13px;opacity:.92;}
.cover-meta span{display:flex;align-items:center;gap:5px;}

/* ---------- 统计条 ---------- */
.stat-bar{
  display:flex;gap:12px;padding:16px;flex-wrap:wrap;
}
.stat-pill{
  flex:1;min-width:120px;background:#fff;border-radius:12px;padding:14px 12px;text-align:center;
  box-shadow:var(--shadow);border:1px solid var(--c-border);
}
.stat-pill .n{font-size:24px;font-weight:800;color:var(--c-primary);}
.stat-pill .l{font-size:12px;color:var(--c-text-sub);margin-top:2px;}

/* ---------- 筛选栏 ---------- */
.filter-bar{
  position:sticky;top:0;z-index:40;background:rgba(245,247,250,.96);backdrop-filter:blur(8px);
  padding:12px 16px;border-bottom:1px solid var(--c-border);
}
.filter-row{display:flex;gap:8px;flex-wrap:wrap;align-items:center;}
.filter-label{font-size:12px;color:var(--c-text-sub);font-weight:600;margin-right:4px;}
.fbtn{
  font-size:13px;padding:6px 14px;border-radius:20px;border:1px solid var(--c-border);
  background:#fff;color:var(--c-text-sub);cursor:pointer;transition:.15s;font-weight:500;
}
.fbtn:hover{border-color:var(--c-primary);color:var(--c-primary);}
.fbtn.active{background:var(--c-primary);color:#fff;border-color:var(--c-primary);font-weight:600;}

/* ---------- 目录 ---------- */
.toc{padding:0 16px 8px;}
.toc-title{font-size:16px;font-weight:700;padding:14px 4px 10px;display:flex;align-items:center;gap:8px;}
.toc-list{display:flex;flex-direction:column;gap:6px;}
.toc-item{
  display:flex;align-items:center;gap:10px;padding:10px 14px;background:#fff;border-radius:10px;
  border:1px solid var(--c-border);cursor:pointer;transition:.15s;font-size:14px;
}
.toc-item:hover{background:var(--c-primary-l);border-color:var(--c-primary);}
.toc-num{font-size:12px;font-weight:700;color:var(--c-primary);flex-shrink:0;width:24px;}
.toc-city{font-weight:600;flex-shrink:0;}
.toc-year-tag{font-size:11px;padding:2px 8px;border-radius:8px;background:var(--c-primary-l);color:var(--c-primary-d);font-weight:600;flex-shrink:0;}
.toc-title-text{flex:1;color:var(--c-text-sub);font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.toc-genre{font-size:11px;color:var(--c-text-sub);flex-shrink:0;}

/* ---------- 文章卡片 ---------- */
.passages{padding:8px 16px 40px;}
.passage{
  background:#fff;border-radius:var(--radius);padding:22px 20px;margin-bottom:16px;
  box-shadow:var(--shadow);border:1px solid var(--c-border);scroll-margin-top:80px;
}
.p-head{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:8px;}
.p-year{font-size:11px;font-weight:700;padding:3px 9px;border-radius:8px;background:var(--c-primary);color:#fff;}
.p-city{font-size:13px;font-weight:700;}
.p-type{font-size:11px;padding:2px 8px;border-radius:8px;background:#F0F3F8;color:var(--c-text-sub);}
.p-genre{font-size:11px;padding:2px 8px;border-radius:8px;background:#FFF8E8;color:var(--c-orange);}
.p-title{font-size:20px;font-weight:800;margin:8px 0 4px;line-height:1.4;}
.p-topic{font-size:13px;color:var(--c-text-sub);margin-bottom:14px;}

.p-article{
  font-size:15px;line-height:1.9;color:#2C3E50;text-align:justify;
  background:#FAFCFF;border-radius:12px;padding:18px 16px;border-left:4px solid var(--c-primary);
  white-space:pre-wrap;
}

/* 题目 */
.p-questions{margin-top:16px;}
.pq-block{margin-bottom:16px;padding:14px 14px;background:#F7F9FC;border-radius:12px;border:1px solid var(--c-border);}
.pq-head{display:flex;align-items:center;gap:8px;margin-bottom:8px;flex-wrap:wrap;}
.pq-tag{font-size:11px;font-weight:700;color:#fff;padding:2px 8px;border-radius:8px;white-space:nowrap;}
.pq-no{font-size:13px;font-weight:700;color:var(--c-primary);}
.pq-q{font-size:14px;font-weight:600;margin-bottom:10px;line-height:1.6;color:var(--c-text);}
.pq-opts{display:flex;flex-direction:column;gap:6px;margin-bottom:10px;}
.pq-opt{display:flex;align-items:flex-start;gap:8px;font-size:13px;padding:7px 10px;border-radius:8px;background:#fff;border:1px solid var(--c-border);}
.pq-opt.ans{background:var(--c-green-l);border-color:var(--c-green);font-weight:600;}
.pq-letter{font-weight:700;flex-shrink:0;color:var(--c-text-sub);}
.pq-opt.ans .pq-letter{color:var(--c-green);}

/* 答案解析折叠 */
.pq-answer{display:none;}
.pq-answer.show{display:block;}
.pq-answer-btn{
  font-size:12px;color:var(--c-primary);background:none;border:1px solid var(--c-primary-l);
  padding:4px 12px;border-radius:8px;cursor:pointer;font-weight:600;transition:.15s;
}
.pq-answer-btn:hover{background:var(--c-primary-l);}
.pq-explain{margin-top:8px;font-size:13px;color:#4A5568;line-height:1.7;background:#fff;border-radius:8px;padding:10px 12px;border:1px solid var(--c-border);}
.pq-explain b{color:var(--c-primary);}

/* 页脚 */
.footer{text-align:center;padding:24px 16px 40px;color:var(--c-text-sub);font-size:12px;line-height:1.8;}
.footer b{color:var(--c-primary);}

/* 返回顶部 */
.back-top{
  position:fixed;bottom:24px;right:24px;width:44px;height:44px;border-radius:50%;
  background:var(--c-primary);color:#fff;border:none;font-size:20px;cursor:pointer;
  box-shadow:var(--shadow-lg);display:none;z-index:50;transition:.2s;
}
.back-top:hover{transform:translateY(-2px);}
.back-top.show{display:flex;align-items:center;justify-content:center;}

@media(max-width:600px){
  .cover h1{font-size:22px;}
  .p-title{font-size:17px;}
  .p-article{font-size:14px;padding:14px 12px;}
}