/* 学习闭环三页：试卷、档案、复习。和课程页同一张白纸：标题行 + 可滚动正文；不嵌套白卡，分组只用细线和留白。 */
.learn-view { left: var(--rail); }
.lp { position: absolute; inset: 0; display: flex; padding: 12px 12px 12px 0; }
.lp-paper { position: relative; flex: 1; min-width: 0; background: var(--paper); border-radius: var(--r-paper); box-shadow: var(--sh-paper); display: flex; flex-direction: column; overflow: hidden; }
.lp-head { min-height: 72px; flex: none; display: flex; align-items: center; gap: 12px; padding: 12px 20px 8px 28px; flex-wrap: wrap; }
.lp-head h1 { font: var(--t-title); margin: 0; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 60%; }
.lp-back { margin-left: -12px; }
.lp-tools { margin-left: auto; display: flex; align-items: center; gap: 10px; min-width: 0; }
.lp-body { flex: 1; min-height: 0; overflow-y: auto; padding: 4px 28px 40px; }
.lp-body > * { max-width: 880px; }
.lp-section { margin-top: 28px; }
.lp-cap { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.lp-cap h2 { font: var(--t-heading); margin: 0; }
.lp-cap > :last-child:not(h2) { margin-left: auto; }
.lp-empty { color: var(--muted); font: var(--t-body); margin: 8px 0; }
.lp .muted { font: var(--t-caption); }
.rich { overflow-wrap: anywhere; }
.rich p { margin: 0 0 6px; }
.rich p:last-child { margin-bottom: 0; }
.rich .katex-display { overflow-x: auto; overflow-y: hidden; padding: 2px 0; }
.field-label { display: block; font: var(--t-caption); color: var(--ink-2); margin: 16px 0 6px 2px; }
.state { display: inline-flex; align-items: center; gap: 8px; font: var(--t-caption); color: var(--ink-2); }
.state .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--line-strong); }
.state[data-s="running"] .dot, .state[data-s="queued"] .dot { background: var(--accent); }
.state[data-s="needs_confirmation"] .dot, .state[data-s="failed"] .dot, .state[data-s="interrupted"] .dot { background: var(--danger); }
.exam-warning { font: var(--t-caption); color: var(--muted); margin: 4px 0 0; }
.exam-warning::before { content: "· "; }
.icon.spin { animation: learn-spin 1.2s linear infinite; color: var(--accent); }
@keyframes learn-spin { to { transform: rotate(360deg); } }
:root[data-motion="reduced"] .icon.spin { animation: none; }
@media (prefers-reduced-motion: reduce) { .icon.spin { animation: none; } }

/* ---------- 学习建议（首页和档案共用） ---------- */
.suggest { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 4px 12px; align-items: start; padding: 14px 0; border-bottom: 1px solid var(--line); }
.suggest > .icon { margin-top: 2px; color: var(--accent); }
.suggest-text p { margin: 0; font-weight: 600; }
.suggest-text small { display: block; color: var(--muted); font: var(--t-caption); margin-top: 2px; }
.suggest-actions { grid-column: 2; display: flex; flex-wrap: wrap; gap: 4px; margin-left: -12px; }
.suggest-actions button { min-height: 40px; }
.suggest-note { grid-column: 2; color: var(--danger); font: var(--t-caption); }
.suggest-note:empty { display: none; }

/* ---------- 复习 ---------- */
.review-hero { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; padding: 18px 0 20px; border-bottom: 1px solid var(--line); }
.review-count { display: flex; align-items: baseline; gap: 8px; font: var(--t-heading); }
.review-count b { font: var(--t-display); }
.review-hero > .primary { margin-left: auto; padding: 0 22px; }
.review-hero > small { flex-basis: 100%; margin-top: -8px; }
.review-links { flex-basis: 100%; display: flex; gap: 4px; margin: -8px 0 0 -12px; }
.review-progress { font: var(--t-control); color: var(--muted); font-variant-numeric: tabular-nums; }
.flash { max-width: 720px; margin: 4vh auto 0; display: flex; flex-direction: column; align-items: stretch; gap: 16px; }
.flash-meta { font: var(--t-caption); color: var(--muted); margin: 0; }
.flash-front { font: 600 22px/1.6 var(--font); }
.flash-flip { align-self: flex-start; min-width: 140px; }
.flash-back { border-top: 1px solid var(--line); padding-top: 16px; font: var(--t-reading); outline: none; }
.flash-quote { font: var(--t-caption); color: var(--muted); margin: 10px 0 0; }
.flash-rate { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.flash-rate button { min-height: 52px; background: var(--control); }
.flash-note { font: var(--t-caption); color: var(--muted); min-height: 1.5em; margin: 0; }
.flash-done { font: var(--t-title); margin: 0; }
.flash > small + button { align-self: flex-start; margin-left: -12px; }
.draft-list { display: flex; flex-direction: column; }
.draft-subjects { margin-bottom: 6px; overflow-x: auto; scrollbar-width: none; }
.draft-group { border-bottom: 1px solid var(--line); }
.draft-group > summary { display: flex; align-items: center; gap: 12px; min-height: 56px; padding: 6px 0; list-style: none; }
.draft-group > summary::-webkit-details-marker { display: none; }
.draft-group-name { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.draft-group-name b { font: 600 15px/1.45 var(--font); }
.draft-group-name small { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.draft-group > summary .quiet { flex: none; }
.draft-group .draft-list { padding-bottom: 8px; }
.draft { padding: 14px 0; border-bottom: 1px solid var(--line); }
.draft-fields { display: grid; grid-template-columns: 48px minmax(0, 1fr); gap: 8px 10px; align-items: start; margin-top: 6px; }
.draft-fields .flash-quote { grid-column: 2; margin: 0; }
.draft-label { font: var(--t-caption); color: var(--muted); padding-top: 12px; }
.draft textarea { width: 100%; }
.draft-actions { display: flex; align-items: center; gap: 6px; margin: 8px 0 0 46px; flex-wrap: wrap; }
.exam-plan { padding: 12px 0 16px; border-bottom: 1px solid var(--line); }
.exam-plan-head { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.exam-plan-head h3 { font: var(--t-heading); margin: 0; }
.exam-plan-actions { display: flex; align-items: center; gap: 8px; margin: 6px 0 0 -12px; }
.plan-days { list-style: none; margin: 10px 0 0; padding: 0; display: flex; flex-direction: column; }
.plan-day { display: grid; grid-template-columns: 76px minmax(0, 1fr); gap: 12px; padding: 8px 0; border-top: 1px solid var(--line); }
.plan-day[data-today="true"] .plan-date { color: var(--accent-ink); font-weight: 600; }
.plan-date { font: var(--t-control); color: var(--ink-2); padding-top: 2px; }
.plan-items p { margin: 0; }
.plan-left { font: var(--t-caption); color: var(--muted); }
.plan-editor { display: flex; flex-direction: column; gap: 14px; }
.plan-editor fieldset { border: 0; padding: 0; margin: 0; min-width: 0; }
.plan-editor legend { font: var(--t-caption); color: var(--muted); padding: 0; margin-bottom: 6px; }
.plan-exam { padding: 12px 0; border-top: 1px solid var(--line); }
.plan-exam-line { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.plan-exam-line input:first-child { flex: 1 1 200px; }
.plan-range { margin-top: 8px; }
.plan-range summary { font: var(--t-control); color: var(--ink-2); padding: 6px 0; }
.plan-range-body { max-height: 320px; overflow-y: auto; padding: 4px 0 4px 4px; }
.plan-chapter { margin-bottom: 8px; }
.plan-chapter-name { font: var(--t-caption); color: var(--muted); margin: 6px 0 2px; }
label.check { display: flex; align-items: center; gap: 10px; min-height: 40px; font: var(--t-control); }
.plan-editor > .quiet { align-self: flex-start; margin-left: -12px; }
.plan-week { display: flex; flex-wrap: wrap; gap: 8px 14px; }
.plan-week legend { width: 100%; }
.plan-minute { display: flex; flex-direction: column; gap: 4px; font: var(--t-caption); color: var(--ink-2); }
.plan-minute input { width: 76px; }
.plan-editor-foot { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.plan-editor-foot .error { margin: 0; }

/* ---------- 试卷 ---------- */
.exam-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; margin-top: 6px; }
.exam-card { min-height: 128px; padding: 16px 18px; border-radius: var(--r-card); background: var(--control); display: flex; flex-direction: column; align-items: flex-start; gap: 6px; text-align: left; }
.exam-card .subj { font: var(--t-caption); color: var(--muted); }
.exam-card h3 { font: 600 16px/1.45 var(--font); margin: 0; }
.exam-card .state { margin-top: auto; }
@media (hover: hover) and (pointer: fine) { .exam-card:hover { background: var(--paper); box-shadow: inset 0 0 0 1px var(--line-strong), var(--sh-touch); } }
.exam-new { max-width: 520px; display: flex; flex-direction: column; }
.exam-new input { height: 48px; }
.exam-new .primary { margin-top: 24px; align-self: flex-start; padding: 0 22px; }
.exam-new .subjects { flex-wrap: wrap; }
.upload { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 0 28px; }
.upload-slot { padding: 14px 0; border-bottom: 1px solid var(--line); }
.upload-head { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.upload-head h3 { font: var(--t-heading); margin: 0; }
.upload-files { list-style: none; margin: 8px 0 0; padding: 0; }
.upload-files li { display: flex; align-items: center; gap: 8px; min-height: 32px; font: var(--t-control); }
.upload-files li span { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.upload-files li small { margin-left: auto; flex: none; }
.upload-files .icon { color: var(--muted); }
.upload-actions { display: flex; gap: 4px; margin: 6px 0 0 -12px; }
.upload-foot { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-top: 20px; }
.upload-foot .primary { padding: 0 22px; }
.upload-foot .error { flex-basis: 100%; margin: 0; }
.exam-running { display: flex; flex-direction: column; align-items: flex-start; gap: 8px; padding: 10vh 0 0; }
.exam-running .icon { width: 28px; height: 28px; }
.exam-stage { font: var(--t-title); margin: 4px 0 0; }
.exam-running .primary { margin-top: 12px; padding: 0 22px; }
.exam-summary { padding: 8px 0 16px; border-bottom: 1px solid var(--line); }
.exam-score { font: var(--t-heading); }
.exam-score b { font: var(--t-display); font-variant-numeric: tabular-nums; }
.exam-summary > small { display: block; }
.exam-redo { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
.exam-redo .primary { padding: 0 20px; }
.weak { padding: 12px 0; border-bottom: 1px solid var(--line); }
.weak h3 { font: var(--t-heading); margin: 0; }
.weak-meta { font: var(--t-control); color: var(--ink-2); margin: 2px 0 0; }
.weak-cite { font: var(--t-caption); color: var(--muted); margin: 6px 0 0; }
.weak-history { font: var(--t-caption); color: var(--ink-2); margin: 6px 0 0; }
.weak-actions, .sec-actions { display: flex; flex-wrap: wrap; gap: 2px; margin: 6px 0 0 -12px; }
.q-row { border-bottom: 1px solid var(--line); }
.q-row > summary { display: grid; grid-template-columns: 44px auto auto minmax(0, 1fr); align-items: center; gap: 10px; min-height: 52px; list-style: none; padding: 6px 0; }
.q-row > summary::-webkit-details-marker { display: none; }
.q-no { font: 600 15px/1 var(--font); font-variant-numeric: tabular-nums; }
.q-chip { font: var(--t-caption); padding: 2px 8px; border-radius: var(--r-chip); background: var(--control); color: var(--ink-2); white-space: nowrap; }
.q-row[data-s="incorrect"] .q-chip, .q-row[data-s="partial"] .q-chip { background: var(--danger-tint); color: var(--danger); }
.q-row[data-s="pending_confirmation"] .q-chip, .q-row[data-s="pending"] .q-chip { box-shadow: inset 0 0 0 1px var(--line-strong); background: transparent; }
.q-score { font: var(--t-control); color: var(--ink-2); font-variant-numeric: tabular-nums; white-space: nowrap; }
.q-diag { font: var(--t-control); color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.q-row[open] .q-diag { white-space: normal; }
.q-body { padding: 0 0 16px 54px; display: flex; flex-direction: column; gap: 10px; }
.q-body > .text-button { align-self: flex-start; margin-left: -8px; }
.q-answers { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 4px 14px; margin: 0; font: var(--t-control); }
.q-answers dt { color: var(--muted); }
.q-answers dd, .q-answers .dd-rich { margin: 0; overflow-wrap: anywhere; }
.sec-actions .cost { align-self: center; margin-left: 10px; }
.crop-frame:focus-visible, .evidence li.link:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.q-step { border-left: 2px solid var(--danger); padding-left: 12px; font: var(--t-control); }
.q-step p { margin: 0; }
.q-quote { color: var(--ink-2); }
.q-eval { font: var(--t-control); color: var(--ink-2); }
.q-crops { display: flex; gap: 12px; flex-wrap: wrap; }
.crop { margin: 0; width: min(100%, 260px); }
.crop.big { width: 100%; }
.crop-frame { cursor: zoom-in; }
.crop.big .crop-frame { cursor: zoom-out; }
.crop-frame { position: relative; overflow: hidden; border-radius: 10px; box-shadow: inset 0 0 0 1px var(--line); aspect-ratio: 4 / 3; background: var(--control); }
.crop-frame img { position: absolute; max-width: none; }
.crop figcaption { font: var(--t-caption); color: var(--muted); margin-top: 4px; }
.q-fix { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 10px; }
.q-field { display: flex; flex-direction: column; gap: 4px; font: var(--t-caption); color: var(--ink-2); }
.q-field input, .q-field select { height: 44px; width: 100%; }
.q-fix-foot { grid-column: 1 / -1; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.q-fix-foot .error { margin: 0; flex-basis: 100%; }
.q-confirm { padding: 12px 0; border-bottom: 1px solid var(--line); display: flex; flex-direction: column; gap: 8px; }
.q-confirm-head { font: var(--t-control); color: var(--ink-2); margin: 0; }
.q-confirm-form { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.q-confirm-form input { height: 44px; flex: 1 1 220px; min-width: 0; }
.q-confirm-form .error { margin: 0; flex-basis: 100%; }

/* ---------- 档案 ---------- */
.sec-list { display: flex; flex-direction: column; }
.sec { border-bottom: 1px solid var(--line); }
.sec > summary { display: flex; align-items: center; gap: 12px; min-height: 56px; padding: 8px 0; list-style: none; }
.sec > summary::-webkit-details-marker { display: none; }
.sec-name { display: flex; flex-direction: column; min-width: 0; flex: 1; }
.sec-name b { font: 600 16px/1.45 var(--font); }
.sec-name small { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sec-state { flex: none; display: inline-flex; align-items: center; gap: 8px; font: var(--t-control); color: var(--ink-2); }
.sec-state::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--line-strong); }
.sec[data-state="weak"] .sec-state::before { background: var(--danger); }
.sec[data-state="strong"] .sec-state::before { background: var(--ink); }
.sec[data-state="recovering"] .sec-state::before { background: transparent; box-shadow: inset 0 0 0 2px var(--danger); }
.sec[data-state="self"] .sec-state::before { background: transparent; box-shadow: inset 0 0 0 1.5px var(--ink); }
.sec[data-state="stale"] .sec-state::before { background: transparent; box-shadow: inset 0 0 0 1.5px var(--ink-2); }
.sec[data-state="not_studied"] .sec-state { color: var(--muted); }
.sec[data-state="not_studied"] .sec-state::before { background: transparent; box-shadow: inset 0 0 0 1.5px var(--line-strong); }
.sec-body { padding: 0 0 14px; }
.sec-basis { font: var(--t-control); color: var(--ink-2); margin: 0 0 8px; }
.evidence { list-style: none; margin: 0; padding: 0; }
.evidence li { display: grid; grid-template-columns: 64px 52px minmax(0, 1fr) auto; gap: 8px; align-items: baseline; padding: 6px 0; font: var(--t-control); border-top: 1px solid var(--line); }
.evidence li.link { cursor: pointer; }
.evidence li.link:active { background: var(--control); }
.ev-date { color: var(--muted); font: var(--t-caption); }
.ev-obs { font: var(--t-caption); color: var(--ink-2); }
.evidence li[data-obs="incorrect"] .ev-obs, .evidence li[data-obs="partial"] .ev-obs { color: var(--danger); }
.ev-what { overflow-wrap: anywhere; color: var(--ink-2); }
.evidence.unmapped li { grid-template-columns: 64px minmax(0, 1fr) 140px; }
.evidence.unmapped select { height: 36px; padding: 0 8px; }
.sec-more { margin-top: 6px; }
.sec-more > summary { font: var(--t-control); color: var(--ink-2); min-height: 44px; display: flex; align-items: center; }
.mistake-filter { margin-bottom: 6px; overflow-x: auto; scrollbar-width: none; }
.mistake { padding: 14px 0; border-bottom: 1px solid var(--line); display: flex; flex-direction: column; gap: 8px; }
.mistake-meta { font: var(--t-caption); color: var(--muted); margin: 0; }
.mistake-diag { font: var(--t-control); color: var(--ink-2); margin: 0; }
.practice { margin: 8px 0 0; padding-left: 22px; display: flex; flex-direction: column; gap: 12px; }
.practice li > .text-button { margin-left: -8px; }
.practice-answer { font: var(--t-control); color: var(--ink-2); border-left: 2px solid var(--line-strong); padding-left: 12px; }
.practice-answer p { margin: 0 0 4px; }
.practice-form { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-top: 6px; }
.practice-form input { height: 44px; flex: 1 1 200px; min-width: 0; }
.practice-form .text-button, .practice-line .text-button { margin-left: -4px; }
.practice-line { display: flex; flex-wrap: wrap; gap: 2px; margin: 2px 0 0 -8px; }
.practice-line:empty { display: none; }
.practice-result { font: var(--t-control); color: var(--ink-2); margin: 4px 0 0; }
.practice-result:empty { display: none; }
.practice-result[data-ok="true"] { color: var(--ink); font-weight: 600; }
.week { padding: 12px 0; border-bottom: 1px solid var(--line); }
.week > summary { display: flex; align-items: baseline; gap: 12px; min-height: 40px; font: var(--t-heading); flex-wrap: wrap; }
.week-body { padding: 6px 0 4px; }
.week-nav { display: flex; align-items: center; gap: 8px; margin-left: -12px; }
.week-group h3 { font: var(--t-control); color: var(--muted); margin: 10px 0 4px; }
.week-group ul { margin: 0; padding-left: 18px; }
.week-limit { font: var(--t-caption); color: var(--faint); margin: 4px 0 0; }

@media (max-width: 900px) {
  .lp-head { padding: 14px 16px 6px; gap: 10px; }
  .lp-head .lp-tools { order: 3; width: 100%; margin-left: 0; overflow-x: auto; scrollbar-width: none; }
  .lp-head .lp-tools::-webkit-scrollbar { display: none; }
  .lp-head h1 { max-width: none; flex: 1; }
  .lp-body { padding: 4px 16px 28px; }
}
@media (max-width: 560px) {
  .learn-view { left: 0; bottom: calc(60px + env(safe-area-inset-bottom)); }
  .lp { padding: 8px; }
  .rail-item[data-pending="true"] { display: none; }
  .q-row > summary { grid-template-columns: 36px auto minmax(0, 1fr); }
  .q-diag { grid-column: 1 / -1; }
  .q-body { padding-left: 0; }
  .flash-rate { grid-template-columns: repeat(2, 1fr); }
  .evidence li { grid-template-columns: 56px 44px minmax(0, 1fr); }
  .evidence.unmapped li { grid-template-columns: 56px minmax(0, 1fr); }
  .evidence.unmapped select { grid-column: 1 / -1; }
  .draft-fields { grid-template-columns: minmax(0, 1fr); }
  .draft-fields .flash-quote { grid-column: 1; }
  .draft-label { padding-top: 0; }
  .draft-actions { margin-left: -12px; }
}

/* ---------- 试卷报告：结论、丢分构成、先做这几件、薄弱点 ---------- */
.exam-conclusion { font: var(--t-body); color: var(--ink); margin: 6px 0 2px; max-width: 720px; }

.weak-state { font: var(--t-caption); color: var(--ink-2); padding: 1px 8px; border-radius: var(--r-chip); box-shadow: inset 0 0 0 1px var(--line-strong); }
.weak-q { margin-top: 10px; padding-left: 12px; border-left: 2px solid var(--line); display: flex; flex-direction: column; gap: 4px; }
.weak-q-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.cause-chip { font: var(--t-caption); height: 30px; padding: 0 26px 0 10px; border-radius: var(--r-chip); border: 0; color: var(--ink); background-color: var(--paper); box-shadow: inset 0 0 0 1.5px var(--g, var(--line-strong)); }
span.cause-chip { display: inline-flex; align-items: center; padding: 0 10px; }
select.cause-chip { cursor: pointer; }
.cause-chip:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.repeat-list li { padding: 3px 0; }
@media (max-width: 560px) {
  .kind-row { grid-template-columns: 56px minmax(60px, 1fr) 64px; }
  .kind-lost { display: none; }
  .step { grid-template-columns: 24px minmax(0, 1fr); }
  .step > button { grid-column: 2; justify-self: start; margin-left: -12px; }
}