/* =========================================================================
 * pages/quiz.css — 小测试页（#/quiz · .page-quiz 作用域）
 * 视觉跟随主站圆角毛玻璃语言（tokens.css 变量），图表为纯 SVG 静态渲染。
 * ========================================================================= */

.page-quiz {
  max-width: 880px;
  margin: 0 auto;
  padding: 48px 28px 96px;
}

/* ---------------- 页头 ---------------- */
.quiz-head__title {
  margin: 0 0 6px;
  font-size: 30px;
  letter-spacing: .28em;
  color: var(--ink);
}
.quiz-head__sub {
  margin: 0 0 26px;
  font-size: 11px;
  letter-spacing: .3em;
  color: var(--muted);
}

/* ---------------- 页签 ---------------- */
.quiz-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.quiz-tab {
  padding: 9px 20px;
  font-size: 12px;
  letter-spacing: .16em;
  font-family: inherit;
  color: var(--muted);
  background: var(--glass-bg, var(--panel));
  border: 1px solid var(--line);
  border-radius: var(--radius-pill, 999px);
  cursor: pointer;
  transition: color .2s, border-color .2s;
}
.quiz-tab:hover { color: var(--ink); }
.quiz-tab.is-on {
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
  background: rgba(53, 224, 255, .07);
}

/* ---------------- 通用 ---------------- */
.quiz-sub {
  margin: 26px 0 12px;
  font-size: 13px;
  letter-spacing: .2em;
  color: var(--ink);
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.quiz-note {
  margin: 10px 0 0;
  font-size: 11px;
  letter-spacing: .08em;
  line-height: 1.8;
  color: var(--muted);
}
.quiz-empty {
  padding: 26px 0;
  text-align: center;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--muted);
}
.quiz-btn {
  display: inline-block;
  padding: 10px 22px;
  font-size: 12px;
  letter-spacing: .16em;
  font-family: inherit;
  color: var(--ink);
  background: var(--glass-bg, var(--panel));
  border: 1px solid var(--line);
  border-radius: var(--radius-pill, 999px);
  cursor: pointer;
  transition: border-color .2s, color .2s, opacity .2s;
}
.quiz-btn:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); }
.quiz-btn--primary {
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
  background: rgba(53, 224, 255, .08);
}
.quiz-btn--primary:hover { background: rgba(53, 224, 255, .16); }
.quiz-btn--danger { color: #ff5d73; border-color: rgba(255, 93, 115, .5); }
.quiz-btn--danger:hover { border-color: #ff5d73; background: rgba(255, 93, 115, .08); }
.quiz-btn--mini { padding: 4px 14px; font-size: 11px; }

/* ---------------- 统计卡 ---------------- */
.quiz-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.quiz-stat {
  padding: 16px 18px;
  background: var(--glass-bg, var(--panel));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg, 20px);
}
.quiz-stat span {
  display: block;
  font-size: 10px;
  letter-spacing: .22em;
  color: var(--muted);
  margin-bottom: 6px;
}
.quiz-stat b {
  display: block;
  font-size: 22px;
  color: var(--accent-cyan);
  letter-spacing: .06em;
}
.quiz-stat i {
  display: block;
  margin-top: 6px;
  font-size: 10px;
  font-style: normal;
  letter-spacing: .06em;
  color: var(--muted);
}

/* ---------------- 难度选择 ---------------- */
.quiz-levels {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.quiz-level {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px 22px;
  text-align: left;
  font-family: inherit;
  background: var(--glass-bg, var(--panel));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg, 20px);
  cursor: pointer;
  transition: border-color .25s, transform .25s;
}
.quiz-level:hover:not(:disabled) {
  border-color: var(--accent-cyan);
  transform: translateY(-2px);
}
.quiz-level:disabled { opacity: .45; cursor: not-allowed; }
.quiz-level__en {
  font-size: 10px;
  letter-spacing: .26em;
  color: var(--muted);
}
.quiz-level__name {
  font-size: 19px;
  letter-spacing: .14em;
  color: var(--ink);
}
.quiz-level__desc {
  font-size: 12px;
  line-height: 1.8;
  color: var(--muted);
}
.quiz-level__meta {
  margin-top: 4px;
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--accent-cyan);
}

/* ---------------- 题库来源 ---------------- */
.quiz-sources {
  margin-top: 28px;
  padding: 24px;
  background:
    linear-gradient(135deg, rgba(67, 105, 255, .08), rgba(53, 224, 255, .03)),
    var(--glass-bg, var(--panel));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg, 20px);
}
.quiz-sources__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
}
.quiz-sources__kicker {
  display: block;
  margin-bottom: 7px;
  font-size: 9px;
  letter-spacing: .28em;
  color: var(--accent-cyan);
}
.quiz-sources__title {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--ink);
}
.quiz-sources__date {
  flex: 0 0 auto;
  font-size: 10px;
  letter-spacing: .14em;
  color: var(--muted);
}
.quiz-sources__intro {
  max-width: 760px;
  margin: 14px 0 18px;
  font-size: 11px;
  line-height: 1.8;
  color: var(--muted);
}
.quiz-sources__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
}
.quiz-source {
  display: flex;
  align-items: center;
  gap: 11px;
  min-width: 0;
  padding: 12px 13px;
  color: inherit;
  text-decoration: none;
  background: rgba(10, 19, 38, .26);
  border: 1px solid rgba(134, 161, 218, .18);
  border-radius: 12px;
  transition: transform .2s, border-color .2s, background .2s;
}
.quiz-source:hover,
.quiz-source:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(53, 224, 255, .52);
  background: rgba(53, 224, 255, .06);
  outline: none;
}
.quiz-source__org {
  flex: 0 0 auto;
  min-width: 42px;
  padding: 3px 6px;
  text-align: center;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--accent-cyan);
  border: 1px solid rgba(53, 224, 255, .3);
  border-radius: 999px;
}
.quiz-source__copy {
  display: flex;
  min-width: 0;
  flex: 1;
  flex-direction: column;
  gap: 3px;
}
.quiz-source__title,
.quiz-source__scope {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.quiz-source__title {
  font-size: 11px;
  font-weight: 600;
  color: var(--ink);
}
.quiz-source__scope {
  font-size: 9px;
  letter-spacing: .04em;
  color: var(--muted);
}
.quiz-source__arrow {
  flex: 0 0 auto;
  font-size: 15px;
  color: var(--accent-cyan);
}

/* ---------------- 答题流程 ---------------- */
.quiz-run__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 10px;
}
.quiz-run__lvl {
  font-size: 11px;
  letter-spacing: .24em;
  color: var(--accent-cyan);
}
.quiz-run__prog {
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--muted);
}
.quiz-run__bar {
  height: 4px;
  border-radius: 2px;
  background: rgba(140, 170, 255, .14);
  overflow: hidden;
  margin-bottom: 22px;
}
.quiz-run__bar i {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-cyan));
  transition: width .35s;
}
.quiz-q {
  padding: 26px 28px;
  background: var(--glass-bg, var(--panel));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg, 20px);
}
.quiz-q__cat {
  display: inline-block;
  padding: 3px 12px;
  font-size: 10px;
  letter-spacing: .22em;
  color: var(--accent-cyan);
  border: 1px solid rgba(53, 224, 255, .4);
  border-radius: var(--radius-pill, 999px);
  margin-bottom: 14px;
}
.quiz-q__text {
  margin: 0 0 20px;
  font-size: 17px;
  line-height: 1.9;
  letter-spacing: .04em;
  color: var(--ink);
}
.quiz-q__choices {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.quiz-choice {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 18px;
  text-align: left;
  font-family: inherit;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink);
  background: rgba(140, 170, 255, .05);
  border: 1px solid var(--line);
  border-radius: var(--radius-md, 14px);
  cursor: pointer;
  transition: border-color .2s, background .2s;
}
.quiz-choice:hover:not(:disabled) {
  border-color: var(--accent-cyan);
  background: rgba(53, 224, 255, .06);
}
.quiz-choice__key {
  flex: none;
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 50%;
}
.quiz-choice.is-right {
  border-color: #3ddc97;
  background: rgba(61, 220, 151, .1);
}
.quiz-choice.is-right .quiz-choice__key { color: #3ddc97; border-color: #3ddc97; }
.quiz-choice.is-wrong {
  border-color: #ff5d73;
  background: rgba(255, 93, 115, .1);
}
.quiz-choice.is-wrong .quiz-choice__key { color: #ff5d73; border-color: #ff5d73; }
.quiz-choice.is-dim { opacity: .5; }
.quiz-choice:disabled { cursor: default; }
.quiz-explain {
  margin-top: 18px;
  padding: 16px 18px;
  border-radius: var(--radius-md, 14px);
  font-size: 12px;
  line-height: 1.9;
}
.quiz-explain.is-right {
  border: 1px solid rgba(61, 220, 151, .4);
  background: rgba(61, 220, 151, .06);
}
.quiz-explain.is-wrong {
  border: 1px solid rgba(255, 93, 115, .4);
  background: rgba(255, 93, 115, .06);
}
.quiz-explain b { letter-spacing: .1em; }
.quiz-explain.is-right b { color: #3ddc97; }
.quiz-explain.is-wrong b { color: #ff5d73; }
.quiz-explain p { margin: 8px 0 14px; color: var(--ink); }
.quiz-next {
  padding: 9px 24px;
  font-size: 12px;
  letter-spacing: .18em;
  font-family: inherit;
  color: var(--accent-cyan);
  background: rgba(53, 224, 255, .08);
  border: 1px solid var(--accent-cyan);
  border-radius: var(--radius-pill, 999px);
  cursor: pointer;
}
.quiz-next:hover { background: rgba(53, 224, 255, .16); }

/* ---------------- 成绩结果 ---------------- */
.quiz-result {
  padding: 30px 32px;
  text-align: center;
  background: var(--glass-bg, var(--panel));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg, 20px);
}
.quiz-result__lvl {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: .28em;
  color: var(--muted);
}
.quiz-result__score {
  margin: 0;
  font-size: 64px;
  letter-spacing: .04em;
}
.quiz-result__score small { font-size: 20px; color: var(--muted); }
.quiz-result__score.is-pass { color: var(--accent-cyan); }
.quiz-result__score.is-fail { color: #ff5d73; }
.quiz-result__line {
  margin: 10px 0 0;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--muted);
}
.quiz-result__perfect {
  margin: 22px 0 0;
  font-size: 13px;
  color: #3ddc97;
  letter-spacing: .14em;
}
.quiz-result__wrongs {
  margin-top: 22px;
  text-align: left;
}
.quiz-result__ops {
  margin-top: 26px;
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------------- 错题卡 ---------------- */
.quiz-wq {
  padding: 14px 18px;
  margin-bottom: 10px;
  background: var(--glass-bg, var(--panel));
  border: 1px solid var(--line);
  border-radius: var(--radius-md, 14px);
  font-size: 12px;
}
.quiz-wq__q {
  margin: 0 0 8px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--ink);
}
.quiz-wq__cat {
  display: inline-block;
  margin-right: 10px;
  padding: 1px 10px;
  font-size: 10px;
  letter-spacing: .18em;
  color: var(--accent-cyan);
  border: 1px solid rgba(53, 224, 255, .4);
  border-radius: var(--radius-pill, 999px);
}
.quiz-wq__a { margin: 0 0 6px; color: #3ddc97; line-height: 1.7; }
.quiz-wq__e { margin: 0; color: var(--muted); line-height: 1.8; }
.quiz-wq__foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 8px;
  font-size: 11px;
  color: var(--muted);
}

/* ---------------- 成绩折线图（SVG） ---------------- */
.quiz-chart {
  width: 100%;
  height: auto;
  display: block;
  background: var(--glass-bg, var(--panel));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg, 20px);
}
.qv-grid { stroke: rgba(140, 170, 255, .12); stroke-width: 1; }
.qv-grid--pass { stroke: rgba(255, 209, 102, .45); stroke-dasharray: 5 5; }
.qv-line {
  fill: none;
  stroke: var(--accent-cyan);
  stroke-width: 2;
  stroke-linejoin: round;
  stroke-linecap: round;
}
.qv-dot { fill: var(--accent-cyan); }
.qv-dot--fail { fill: #ff5d73; }
.qv-ylab, .qv-xlab {
  font-size: 10px;
  fill: var(--muted);
  letter-spacing: .05em;
}

/* ---------------- 错题热力图 ---------------- */
.quiz-heat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px;
  background: var(--glass-bg, var(--panel));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg, 20px);
}
.quiz-heat__row {
  display: grid;
  grid-template-columns: minmax(88px, 1.2fr) repeat(4, 1fr);
  gap: 4px;
  align-items: stretch;
}
.quiz-heat__cat {
  display: flex;
  align-items: center;
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--ink);
  padding: 6px 8px;
}
.quiz-heat__cell {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  font-size: 12px;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 8px;
}
.quiz-heat__row--head .quiz-heat__cell {
  min-height: 26px;
  font-size: 10px;
  letter-spacing: .2em;
  border: none;
}
.quiz-heat__val { transition: transform .15s; }
.quiz-heat__val:hover { transform: scale(1.04); }

/* ---------------- 成就库 ---------------- */
.quiz-points {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 20px 24px;
  margin-bottom: 22px;
  background: var(--glass-bg, var(--panel));
  border: 1px solid rgba(53, 224, 255, .3);
  border-radius: var(--radius-lg, 20px);
}
.quiz-points__total {
  font-size: 42px;
  color: var(--accent-cyan);
  letter-spacing: .04em;
}
.quiz-points__total small {
  font-size: 14px;
  margin-left: 4px;
  color: var(--muted);
}
.quiz-points__line {
  font-size: 11px;
  line-height: 1.9;
  letter-spacing: .06em;
  color: var(--muted);
}
.quiz-achv-group { margin-bottom: 20px; }
.quiz-achv-group__pts {
  font-size: 11px;
  color: var(--accent-cyan);
  letter-spacing: .1em;
}
.quiz-achv {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  margin-bottom: 8px;
  background: var(--glass-bg, var(--panel));
  border: 1px solid var(--line);
  border-radius: var(--radius-md, 14px);
}
.quiz-achv.is-lock { opacity: .45; }
.quiz-achv__medal {
  flex: none;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-cyan));
}
.quiz-achv.is-lock .quiz-achv__medal { background: rgba(140, 170, 255, .18); }
.quiz-achv__meta { display: flex; flex-direction: column; gap: 3px; }
.quiz-achv__name {
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--ink);
}
.quiz-achv__name i {
  margin-left: 8px;
  font-size: 10px;
  font-style: normal;
  color: var(--accent-cyan);
}
.quiz-achv__desc {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: .04em;
}
.quiz-achv__at {
  margin-left: auto;
  font-size: 10px;
  color: var(--muted);
  white-space: nowrap;
}

/* ---------------- 题库管理 ---------------- */
.quiz-import {
  padding: 20px 22px;
  background: var(--glass-bg, var(--panel));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg, 20px);
}
.quiz-import__ops {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.quiz-import__ta {
  width: 100%;
  box-sizing: border-box;
  margin-bottom: 12px;
  padding: 12px 14px;
  font-family: ui-monospace, Consolas, monospace;
  font-size: 12px;
  line-height: 1.7;
  color: var(--ink);
  background: rgba(7, 11, 20, .4);
  border: 1px solid var(--line);
  border-radius: var(--radius-md, 14px);
  resize: vertical;
}
.quiz-import__result { margin-top: 12px; }
.quiz-import__ok {
  margin: 0;
  font-size: 12px;
  color: #3ddc97;
  letter-spacing: .06em;
}
.quiz-import__errs {
  margin: 8px 0 0;
  padding-left: 18px;
  font-size: 12px;
  line-height: 1.9;
  color: #ff5d73;
}
.quiz-hint {
  padding: 18px 20px;
  font-size: 12px;
  line-height: 1.9;
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--ink);
  background: var(--glass-bg, var(--panel));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg, 20px);
}

/* ---------------- 七天回访「再来看看」（A5） ---------------- */
.quiz-revisit {
  margin-top: 14px;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 16px;
  border: 1px dashed rgba(53, 224, 255, .35);
  border-radius: 14px;
}
.quiz-revisit__meta { flex: 1; }
.quiz-revisit__kicker {
  font-size: 10px;
  letter-spacing: .22em;
  color: var(--accent-cyan, #35e0ff);
}
.quiz-revisit__text {
  margin: 6px 0 2px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink);
}
.quiz-revisit__note {
  margin: 0;
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--muted);
}

/* ---------------- 窄屏适配（≤820px） ---------------- */
@media (max-width: 820px) {
  .page-quiz { padding: 32px 16px 72px; }
  .quiz-revisit { flex-direction: column; align-items: flex-start; }
  .quiz-cards { grid-template-columns: repeat(2, 1fr); }
  .quiz-levels { grid-template-columns: 1fr; }
  .quiz-sources { padding: 20px 16px; }
  .quiz-sources__head { align-items: flex-start; flex-direction: column; gap: 8px; }
  .quiz-sources__grid { grid-template-columns: 1fr; }
  .quiz-q { padding: 20px 18px; }
  .quiz-result { padding: 24px 18px; }
  .quiz-result__score { font-size: 48px; }
  .quiz-points { flex-direction: column; align-items: flex-start; gap: 8px; }
  .quiz-heat { padding: 10px; overflow-x: auto; }
  .quiz-heat__row { min-width: 420px; }
  .quiz-achv__at { display: none; }
}

/* CSAO 认证入口条 */
.quiz-csao-link {
  display: block;
  margin-top: 10px;
  padding: 10px 16px;
  border: 1px dashed rgba(53,224,255,.35);
  border-radius: 12px;
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--accent-cyan, #35e0ff);
  text-decoration: none;
}
.quiz-csao-link:hover { background: rgba(53,224,255,.06); }

/* ---------- 基础证书卡（1000 分领取，成就库页签内） ---------- */
.quiz-cert {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 12px 0 18px;
  padding: 14px 16px;
  border: 1px dashed rgba(53, 224, 255, .35);
  border-radius: var(--radius-lg, 16px);
  background: rgba(53, 224, 255, .05);
}
.quiz-cert.is-lock { opacity: .65; border-color: var(--line, rgba(140,170,255,.2)); background: none; }
.quiz-cert__seal {
  flex: none;
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  border: 1px solid rgba(255, 209, 102, .6);
  color: #ffd166;
  font-size: 20px;
}
.quiz-cert__meta { flex: 1; display: flex; flex-direction: column; gap: 3px; }
.quiz-cert__meta b { font-size: 14.5px; }
.quiz-cert__meta span { font-size: 12px; color: var(--muted, #8a97b1); }

/* 领取后的证书本体 */
.quiz-cert-card {
  margin: 12px 0 18px;
  padding: 26px 26px 20px;
  border: 1px solid rgba(255, 209, 102, .45);
  border-radius: var(--radius-lg, 16px);
  background:
    radial-gradient(ellipse 90% 70% at 50% -10%, rgba(255, 209, 102, .12), transparent 60%),
    var(--panel, #101827);
  text-align: center;
}
.quiz-cert-card__kicker { font-size: 11px; letter-spacing: .18em; color: var(--muted, #8a97b1); }
.quiz-cert-card h3 { margin: 8px 0 2px; font-size: 21px; letter-spacing: .1em; color: #ffd166; }
.quiz-cert-card__name { margin: 12px 0 6px; font-size: 19px; font-weight: 700; }
.quiz-cert-card__line { margin: 0 auto; max-width: 420px; font-size: 13px; color: var(--muted, #8a97b1); }
.quiz-cert-card__no { margin: 14px 0 0; font-size: 12px; letter-spacing: .06em; color: var(--muted, #8a97b1); }
.quiz-cert-card__foot {
  margin: 16px 0 0; padding-top: 12px;
  border-top: 1px dashed var(--line, rgba(140,170,255,.2));
  font-size: 10.5px; color: var(--muted, #8a97b1); opacity: .8;
}