/* 留痕观察 · 题库练习与模考版式（配合 lesson.css 使用） */

.pr-groups{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.pr-chip{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--edge);border-radius:999px;background:#fff;color:var(--brand);padding:11px 18px;font-weight:700;font-size:14px;cursor:pointer;transition:.14s}
.pr-chip i{font-style:normal;color:#8b969e;font-size:12px;font-weight:600}
.pr-chip:hover{border-color:var(--accent)}
.pr-chip.on{background:var(--brand);border-color:var(--brand);color:#fff}
.pr-chip.on i{color:rgba(255,255,255,.72)}
.pr-chip.sm{padding:8px 14px;font-size:13px}

.pr-topics{margin-top:22px;border:1px solid var(--edge);border-radius:12px;background:var(--soft);padding:18px 20px}
.pr-topics>b{display:block;color:var(--brand);font-size:13px;margin-bottom:12px}
.pr-topics>div{display:flex;flex-wrap:wrap;gap:8px}

.pr-modes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:18px}
.pr-mode{border:1px solid var(--edge);border-radius:12px;background:#fff;padding:18px 20px;text-align:left;cursor:pointer;transition:.14s}
.pr-mode:hover{border-color:var(--accent)}
.pr-mode.on{border-color:var(--brand);border-width:2px;background:#fbfcfd;padding:17px 19px}
.pr-mode.dis{opacity:.5;cursor:not-allowed}
.pr-mode b{display:block;color:var(--brand);font-size:16px;margin-bottom:6px}
.pr-mode p{color:#6d7c86;font-size:12.5px;line-height:1.7;margin:0}

.pr-counts{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-top:18px}
.pr-counts>b{color:var(--brand);font-size:13px;margin-right:6px}

.pr-start{display:flex;align-items:center;gap:16px;margin-top:28px}
.pr-start span{color:#7d8a93;font-size:13px}

.pr-stat{margin-top:34px;border-top:1px solid var(--edge);padding-top:24px}
.pr-stat>b{display:block;color:var(--brand);font-size:14px;margin-bottom:14px}
.pr-bar{display:grid;grid-template-columns:minmax(120px,220px) 1fr auto;align-items:center;gap:12px;margin-bottom:9px}
.pr-bar span{color:#54646f;font-size:12.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pr-bar i{display:block;height:9px;border-radius:5px;background:var(--accent);min-width:2px}
.pr-bar i.low{background:#c1584f}
.pr-bar em{font-style:normal;color:#7d8a93;font-size:11.5px;white-space:nowrap}

/* 答题顶部条 */
.pr-bar-top{position:sticky;top:0;z-index:24;background:rgba(255,255,255,.97);backdrop-filter:blur(10px);border-bottom:1px solid var(--edge)}
.pr-bar-top .wrap{display:flex;align-items:center;gap:16px;padding:12px 0}
.pr-bar-top>div>span{color:var(--brand);font-size:13px;font-weight:700;white-space:nowrap}
.pr-timer{font:900 17px var(--serif);color:var(--brand);min-width:64px}
.pr-timer.warn{color:#c1584f}
.pr-progress{flex:1;height:7px;border-radius:4px;background:var(--edge);overflow:hidden;min-width:60px}
.pr-progress i{display:block;height:100%;background:var(--accent);width:0;transition:width .25s}
.pr-submit,.pr-back{border:1px solid var(--edge);border-radius:999px;background:#fff;color:var(--brand);padding:8px 17px;font-weight:700;font-size:13px;cursor:pointer;white-space:nowrap}
.pr-submit{background:var(--brand);border-color:var(--brand);color:#fff}
.pr-back:hover{border-color:var(--accent);color:var(--accent)}

.lh-opt.pick{border-color:var(--brand);background:#f2f6f9}
.lh-opt.pick>span{background:var(--brand);border-color:var(--brand);color:#fff}

/* 成绩 */
.pr-result{border:1px solid var(--edge);border-radius:16px;background:#fff;padding:28px 32px;margin-bottom:22px;box-shadow:0 12px 34px rgba(18,48,70,.08)}
.pr-score{display:flex;align-items:baseline;gap:16px;flex-wrap:wrap;border-bottom:1px solid var(--edge);padding-bottom:18px;margin-bottom:20px}
.pr-score b{font:900 46px var(--serif);color:var(--brand);line-height:1}
.pr-score span{color:#5d6c76;font-size:15px}
.pr-score em{font-style:normal;border-radius:999px;padding:5px 13px;font-size:12.5px;font-weight:700}
.pr-score em.ok{background:#eaf6f0;color:#2f7a57}
.pr-score em.no{background:#fdf1f0;color:#b3524a}
.pr-detail>b{display:block;color:var(--brand);font-size:14px;margin-bottom:14px}
.pr-tip{color:#7d8a93;font-size:12.5px;line-height:1.8;margin:14px 0 0}
.pr-actions{display:flex;gap:12px;margin-top:20px}

@media(max-width:860px){
  .pr-modes{grid-template-columns:1fr}
  .pr-bar{grid-template-columns:1fr;gap:4px}
  .pr-bar em{text-align:right}
  .pr-bar-top .wrap{flex-wrap:wrap}
  .pr-progress{order:3;flex-basis:100%}
}

/* ---------- 旧页面 → 深度讲义 引导横幅 ---------- */
.lesson-cta-band{background:linear-gradient(135deg,#0f3350,#1b4c6e 70%,#8a6a2f);color:#fff;padding:26px 0}
.lesson-cta-band .wrap{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.lesson-cta-band span{display:block;color:#efc76f;font-size:10px;font-weight:900;letter-spacing:1.6px}
.lesson-cta-band b{display:block;color:#fff;font:700 22px/1.45 var(--serif);margin:7px 0 6px}
.lesson-cta-band p{color:#c7d6e1;font-size:13.5px;line-height:1.8;margin:0;max-width:760px}
.lesson-cta-links{display:flex;gap:10px;flex-wrap:wrap;flex:none}
.lesson-cta-band .btn.gold{background:#d8ab4d;border-color:#d8ab4d;color:#10314b}
.lesson-cta-band .btn.gold:hover{background:#e6bd63;border-color:#e6bd63}
.lesson-cta-band .btn.course-ghost{border:1px solid rgba(255,255,255,.42);color:#fff;background:transparent}
.lesson-cta-band .btn.course-ghost:hover{border-color:#efc76f;color:#efc76f}
@media(max-width:860px){
  .lesson-cta-band .wrap{display:block}
  .lesson-cta-links{margin-top:18px}
  .lesson-cta-band b{font-size:19px}
}