* { box-sizing: border-box; }
html, body { width: 100%; min-height: 100%; }
html { background: var(--bg); }
body { margin: 0; color: var(--text-1); background: var(--bg); font: var(--fs-14)/var(--lh-normal) var(--font-ui); font-variant-numeric: tabular-nums; }
.skip-link { position: absolute; left: -9999px; top: 0; z-index: 200; padding: 10px 14px; border-radius: var(--r-sm); color: #fff; background: var(--navy); font-weight: 650; }
.skip-link:focus { left: 12px; top: 12px; }
button, input, select, textarea { color: inherit; font: inherit; }
button { -webkit-tap-highlight-color: transparent; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
[hidden] { display: none !important; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* Explanatory copy is opt-in so the default workspace stays scannable. */
[data-explanation] { display: none !important; max-width: 100%; overflow-wrap: anywhere; white-space: normal; }
html.explanation-mode [data-explanation] { display: block !important; }

/* Customer workspace with a full assistant column and an optional floating window. */
.shell { min-height: 100vh; display: grid; grid-template-columns: var(--nav-w) minmax(0,1fr); }
/* 题库模块固定为一窗，不产生文档/主区滚动（列表与抽屉内部滚动且不显示滚动条） */
html:has(body[data-surface="bank"]) { overflow: clip; }
@media (min-width: 701px) {
  body[data-surface="bank"] { height: 100vh; overflow: clip; }
  body[data-surface="bank"] .shell { height: 100vh; overflow: clip; }
  body[data-surface="bank"] .workspace { height: 100vh; overflow: clip; }
  body[data-surface="bank"] main { overflow: clip; }
}
/* 题篮模块同样固定为一窗：左侧选题列表与右侧题目详情各在窗口内滚动 */
html:has(body[data-surface="review"]) { overflow: clip; }
@media (min-width: 701px) {
  body[data-surface="review"] { height: 100vh; overflow: clip; }
  body[data-surface="review"] .shell { height: 100vh; overflow: clip; }
  body[data-surface="review"] .workspace { height: 100vh; overflow: clip; }
  body[data-surface="review"] main { overflow: hidden; display: flex; flex-direction: column; }
}
.agent-sidebar-mode .shell { grid-template-columns: var(--nav-w) minmax(0,1fr) clamp(390px,31vw,460px); }
.workspace { min-width: 0; height: 100vh; display: grid; grid-template-rows: var(--topbar-h) minmax(0,1fr); }
.nav { height: 100vh; position: sticky; top: 0; display: flex; flex-direction: column; gap: 20px; padding: 18px 14px; border-right: 1px solid var(--border); background: var(--surface); }
.nav-links { display: grid; gap: 4px; }
.nav-item { min-height: 48px; display: flex; align-items: center; gap: 11px; padding: 6px 12px; border-radius: var(--r-sm); color: var(--text-2); transition: background var(--dur) var(--ease), color var(--dur) var(--ease); }
.nav-item:hover { color: var(--text-1); background: var(--surface-2); }
.nav-item[aria-current='page'] { position: relative; color: var(--accent); background: var(--accent-subtle); font-weight: 650; }
.nav-item[aria-current='page']::before { content: ''; position: absolute; left: 0; top: 50%; transform: translateY(-50%); width: 3px; height: 20px; border-radius: 3px; background: var(--accent); }
.nav-icon { width: 22px; flex: 0 0 22px; text-align: center; font-size: 17px; }
.nav-icon svg, .query-icon svg, .icon-button svg { width: 18px; height: 18px; display: block; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.nav-label { min-width: 0; display: grid; line-height: 1.25; }
.nav-label strong { font-size: 13px; }
.nav-label small { overflow: hidden; color: var(--text-3); font-size: 10px; text-overflow: ellipsis; white-space: nowrap; }
html.explanation-mode .nav-label small { overflow-wrap: anywhere; text-overflow: clip; white-space: normal; }

.topbar { min-width: 0; display: grid; grid-template-columns: minmax(0,1fr) auto; align-items: center; gap: 20px; padding: 0 26px; border-bottom: 1px solid var(--border); background: var(--surface); }
.topbar-breadcrumb { min-width: 0; display: grid; }
.topbar-breadcrumb small { color: var(--text-3); font-size: 10px; }
.topbar-breadcrumb strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13px; }
.topbar-actions { justify-self: end; display: flex; align-items: center; gap: 4px; }
.language-toggle { min-width: 58px; color: var(--text-2); }
main { min-width: 0; min-height: 0; overflow: auto; padding: 30px clamp(20px,3.3vw,48px) 52px; }
main > * { width: min(100%,1260px); margin-left: auto; margin-right: auto; }

.work-panel {
  width: clamp(410px, 34vw, 480px);
  height: min(650px, calc(100vh - 112px));
  min-width: 0;
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 40;
  display: grid;
  grid-template-rows: 54px auto minmax(0,1fr);
  overflow: hidden;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-lg);
  background: var(--surface);
  box-shadow: var(--sh-3);
}
.work-panel-head { display: flex; align-items: center; gap: 12px; padding: 0 18px; border-bottom: 1px solid var(--border); }
.work-panel-head > div { min-width: 0; display: grid; }
.work-panel-head strong { font-size: 14px; }
.work-panel-head small { overflow: hidden; color: var(--text-3); font-size: 11px; text-overflow: ellipsis; white-space: nowrap; }
.work-panel-drag { flex: 0 0 auto; cursor: grab; touch-action: none; }
.work-panel-drag:active { cursor: grabbing; }
.work-panel-lock { min-width: 78px; margin-left: auto; color: var(--text-2); font-size: var(--fs-11); }
.work-panel-close { display: inline-grid; }
.panel-tabs, .page-tabs { display: flex; overflow-x: auto; border-bottom: 1px solid var(--border); }
.panel-tabs button, .page-tabs a { min-height: 44px; display: inline-flex; align-items: center; gap: 6px; padding: 0 16px; border: 0; border-bottom: 2px solid transparent; color: var(--text-2); background: transparent; cursor: pointer; white-space: nowrap; }
.panel-tabs button[aria-selected='true'], .page-tabs a[aria-current='page'] { color: var(--accent); border-bottom-color: var(--accent); font-weight: 650; }
.panel-content { min-height: 0; overflow: auto; }
.panel-content > section { padding: 18px; }
.panel-content > section[data-panel-pane='agent'] { height: 100%; min-height: 0; padding: 0; overflow: hidden; }
#agent-chat-root { height: 100%; min-height: 0; }
.agent-mount-loading { height: 100%; display: grid; place-items: center; padding: 24px; color: var(--text-3); font-size: 12px; }
.work-panel-backdrop { display: none; }
.work-panel-collapsed .work-panel { display: none; }
.work-panel[data-active-tab='agent'] { grid-template-rows: minmax(0,1fr); }
.work-panel[data-active-tab='agent'] > .work-panel-head,
.work-panel[data-active-tab='agent'] > .panel-tabs { display: none; }
.work-panel[data-agent-locked='true'] {
  width: clamp(390px, 31vw, 460px);
  height: 100vh;
  min-width: 360px;
  max-width: min(520px, calc(100vw - var(--nav-w-compact)));
  left: auto;
  top: 0;
  right: 0;
  bottom: 0;
  resize: none;
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}
.work-panel[data-agent-locked='false'] {
  min-width: 320px;
  min-height: 260px;
  max-width: calc(100vw - 24px);
  max-height: calc(100vh - 24px);
  resize: both;
}
.work-panel[data-agent-minimized='true'] { width: min(360px, calc(100vw - 32px)); height: 54px; }
.work-panel[data-agent-minimized='true'] { min-width: 280px; min-height: 54px; resize: none; }
.work-panel[data-agent-minimized='true'] [data-panel-pane='agent'] > :not(#agent-chat-root),
.work-panel[data-agent-minimized='true'] .qieti-agent-chat > :not(.qieti-agent-chat__header) { display: none !important; }
.panel-empty { padding: 26px 10px; color: var(--text-3); text-align: center; }
.panel-empty strong { display: block; margin-bottom: 5px; color: var(--text-2); }
.panel-empty p { margin: 4px 0; }
.panel-loading { color: var(--text-3); }
.panel-section { padding-bottom: 18px; margin-bottom: 18px; border-bottom: 1px solid var(--border); }
.panel-section:last-child { border: 0; }
.panel-section h3 { margin: 0 0 10px; font-size: 13px; }

/* Shared components */
h1, h2, h3, p { overflow-wrap: anywhere; text-wrap: balance; }
h1 { margin: 0; color: var(--navy); font-size: clamp(1.6rem,1.22rem + .7vw,var(--fs-28)); line-height: 1.2; letter-spacing: -.03em; font-weight: 700; }
h2 { margin: 0; color: var(--navy); font-size: var(--fs-18); line-height: 1.35; font-weight: 700; }
h3 { margin: 0; font-size: var(--fs-16); font-weight: 650; }
.muted { color: var(--text-3); }
.eyebrow { display: block; margin-bottom: 7px; color: var(--text-3); font: var(--fs-11) var(--font-mono); letter-spacing: .1em; text-transform: uppercase; }
.page-head { display: flex; align-items: flex-start; gap: 20px; margin-bottom: 24px; }
.page-head p { max-width: 700px; margin: 7px 0 0; }
.row { display: flex; align-items: center; gap: 8px; }
.wrap-row { flex-wrap: wrap; }
.spacer { flex: 1; }
.stack { display: grid; gap: 14px; }
.card { padding: 20px; border: 1px solid var(--border); border-radius: var(--r-md); background: var(--surface); box-shadow: var(--sh-1), inset 0 1px 0 color-mix(in srgb, var(--accent-subtle) 42%, transparent); transition: box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease); }
.card.elevated, .bank-overview-card, .paper-summary, .review-card, .list-card { box-shadow: var(--sh-2), inset 0 1px 0 color-mix(in srgb, var(--accent-subtle) 42%, transparent); }
a.card:hover { transform: translateY(-3px); border-color: var(--accent-border); box-shadow: var(--sh-2), inset 0 1px 0 color-mix(in srgb, var(--accent-subtle) 42%, transparent); }
.btn { min-height: var(--h-md); display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 0 13px; border: 1px solid var(--border-strong); border-radius: var(--r-sm); color: var(--text-1); background: var(--surface); cursor: pointer; transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease); }
.btn:hover { border-color: var(--accent-border); color: var(--accent); background: var(--surface-2); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn.primary { color: #fff; border-color: var(--accent); background: var(--accent); box-shadow: 0 2px 8px var(--accent-border); }
.btn.primary:hover { color: #fff; border-color: var(--accent-hover); background: var(--accent-hover); box-shadow: 0 4px 14px var(--accent-border); }
.btn.primary:disabled { box-shadow: none; }
.btn.ghost { border-color: transparent; background: transparent; }
.btn.compact { min-height: 32px; padding: 0 10px; }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.button-link { text-align: center; }
.icon-button { width: 32px; height: 32px; display: inline-grid; place-items: center; padding: 0; border: 0; border-radius: 7px; color: var(--text-2); background: transparent; cursor: pointer; }
.icon-button:hover { color: var(--accent); background: var(--surface-2); }
.badge, .chip, .topic-chip { min-height: 24px; display: inline-flex; align-items: center; gap: 6px; padding: 3px 9px; border: 1px solid var(--border); border-radius: 999px; font-size: var(--fs-12); font-weight: 650; white-space: nowrap; }
.badge::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: currentColor; flex: 0 0 auto; }
.chip button { margin-right: -4px; border: 0; color: inherit; background: transparent; cursor: pointer; }
.chip button svg { width: 12px; height: 12px; fill: none; stroke: currentColor; }
.basket-item .move-up-icon { transform: rotate(180deg); }
.chip.primary, .topic-chip { color: var(--accent); border-color: var(--accent-border); background: var(--accent-subtle); }
.knowledge-tag { color: var(--accent); border-color: var(--accent-border); background: var(--accent-subtle); }
.badge.ok { color: var(--ok); border-color: var(--ok); background: var(--ok-subtle); }
.badge.warn { color: var(--warn); border-color: var(--warn); background: var(--warn-subtle); }
.badge.danger { color: var(--danger); border-color: var(--danger); background: var(--danger-subtle); }
.badge.info { color: var(--info); border-color: var(--info); background: var(--info-subtle); }
.badge.neutral { color: var(--text-2); border-color: var(--border-strong); background: var(--surface-2); }
.notice { padding: 13px 15px; border: 1px solid var(--warn); border-radius: var(--r-sm); color: var(--warn); background: var(--warn-subtle); }
.danger-notice { color: var(--danger); border-color: var(--danger); background: var(--danger-subtle); }
.success-notice { color: var(--ok); border-color: var(--ok); background: var(--ok-subtle); }
label { display: grid; gap: 5px; color: var(--text-2); font-size: var(--fs-13); }
input, select, textarea { width: 100%; border: 1px solid var(--border-strong); border-radius: var(--r-sm); background: var(--surface); transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease); }
input:focus, select:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-subtle); outline: none; }
input, select { min-height: var(--h-md); padding: 0 10px; }
textarea { min-height: 90px; padding: 9px 10px; resize: vertical; }
input::placeholder, textarea::placeholder { color: var(--text-3); }
input[type='checkbox'] { width: 16px; min-height: 16px; margin: 2px 0 0; accent-color: var(--accent); }
input[type='checkbox']:focus-visible, input[type='radio']:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
fieldset { min-width: 0; margin: 0; padding: 14px; border: 1px solid var(--border); border-radius: var(--r-sm); }
legend { padding: 0 5px; font-weight: 650; }
.form-grid { display: grid; gap: 12px; }
.form-grid.two { grid-template-columns: repeat(2,minmax(0,1fr)); }
.check-row { grid-template-columns: 16px minmax(0,1fr); align-items: start; }
.check-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 9px; }
kbd { padding: 2px 5px; border: 1px solid var(--border-strong); border-radius: 4px; color: var(--text-3); background: var(--surface-2); font: var(--fs-11) var(--font-mono); }
table { width: 100%; border-collapse: collapse; background: var(--surface); }
th, td { padding: 11px 12px; border-bottom: 1px solid var(--border); text-align: left; }
th { color: var(--text-2); background: var(--surface); border-bottom: 1px solid var(--border-strong); font-size: var(--fs-12); font-weight: 650; letter-spacing: .02em; }
tbody tr { transition: background var(--dur-fast) var(--ease); }
tbody tr:hover { background: var(--surface-inset); }
.table-card { padding: 0; overflow: auto; }
.table-card h2 { padding: 18px; }
.num { font-family: var(--font-mono); text-align: right; }
.pagination { display: flex; align-items: center; gap: 8px; margin-top: 18px; }

/* Workflow home */
.home-hero { margin-bottom: 24px; }
.home-hero p { max-width: 660px; margin: 8px 0 0; }
.featured-agent-card { height: 560px; min-height: 0; display: grid; grid-template-rows: auto minmax(0,1fr); margin-bottom: 24px; overflow: hidden; border: 1px solid var(--accent-border); border-radius: var(--r-lg); background: var(--surface); box-shadow: var(--sh-2); }
.featured-agent-head { min-height: 92px; display: flex; align-items: center; gap: 20px; padding: 18px 22px; border-bottom: 1px solid var(--border); background: var(--accent-subtle); }
.featured-agent-head > div { min-width: 0; }
.featured-agent-head h2 { font-size: 20px; }
.featured-agent-head p { margin: 5px 0 0; color: var(--text-3); }
.featured-agent-status { margin-left: auto; display: inline-flex; align-items: center; gap: 7px; padding: 7px 10px; border: 1px solid var(--accent-border); border-radius: 999px; color: var(--accent); background: var(--surface); font-size: 11px; font-weight: 650; white-space: nowrap; }
.featured-agent-status i { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); }
#featured-agent-chat-root { min-height: 0; height: 100%; }
.task-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 14px; margin-bottom: 24px; }
.task-card { min-height: 154px; display: grid; grid-template-columns: minmax(0,1fr) auto; align-content: space-between; gap: 16px; color: var(--text-1); }
.task-card:hover { color: var(--text-1); border-color: var(--accent-border); }
.task-card h2 { margin: 0 0 6px; }
.task-card p { margin: 0; color: var(--text-3); }
.task-value { align-self: start; color: var(--accent); font: 700 26px/1 var(--font-mono); }
.task-action { grid-column: 1/-1; color: var(--accent); font-weight: 650; }
.home-lists { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 14px; }
.home-modules { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 14px; margin-bottom: 24px; }
.home-module { display: grid; grid-template-columns: auto minmax(0,1fr); gap: 12px; align-items: center; padding: 16px; color: var(--text-1); }
.home-module:hover { color: var(--text-1); border-color: var(--accent-border); }
.home-module-icon { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 12px; color: var(--accent); background: linear-gradient(145deg, var(--accent-subtle), var(--surface)); box-shadow: inset 0 0 0 1px var(--accent-border); }
.home-module-icon svg { width: 20px; height: 20px; display: block; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.home-module-body { min-width: 0; display: grid; }
.home-module-body strong { font-size: 15px; font-weight: 650; letter-spacing: -.01em; }
.home-module-body small { overflow: hidden; color: var(--text-3); font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.home-recent .activity-item > small { padding: 4px 10px; border-radius: 999px; color: var(--accent); background: var(--accent-subtle); font-size: 12px; font-weight: 650; white-space: nowrap; }
.list-card h2 { margin-bottom: 10px; }
/* 最近试卷：最外层圆角容器，内含每份试卷的独立圆角卡片；隐藏滚动条但保留滚动 */
.home-recent .activity-list { display: grid; gap: 12px; max-height: min(760px, 78vh); overflow: auto; padding: 0 2px; scrollbar-width: none; }
.home-recent .activity-list::-webkit-scrollbar { display: none; }
.home-recent .activity-item, .home-recent .activity-item:first-child { display: grid; grid-template-columns: minmax(0,1fr) auto; align-items: center; gap: 12px; padding: 15px 18px; border: 1px solid var(--border); border-radius: 6px; background: var(--surface); box-shadow: var(--sh-1), inset 0 1px 0 color-mix(in srgb, var(--accent-subtle) 42%, transparent); transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease); }
.home-recent a.activity-item:hover { transform: translateY(-2px); border-color: var(--accent-border); box-shadow: var(--sh-2), inset 0 1px 0 color-mix(in srgb, var(--accent-subtle) 42%, transparent); }
.home-recent .activity-item > span strong { color: var(--text-1); }
.activity-list { display: grid; }
.activity-item { min-height: 50px; display: grid; grid-template-columns: minmax(0,1fr) auto; align-items: center; gap: 12px; padding: 9px 0; border-top: 1px solid var(--border); color: var(--text-1); }
.activity-item:first-child { border-top: 0; }
.activity-item span, .activity-item small { color: var(--text-3); }

/* Question bank and filters */
.filter-chips { min-height: 30px; display: flex; flex-wrap: wrap; align-items: center; gap: 7px; margin-bottom: 16px; }
.result-toolbar { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; color: var(--text-3); }
.question-list { display: grid; gap: 9px; }
.question-result { display: grid; gap: 10px; padding: 16px 18px; }
.question-result:hover { border-color: var(--accent-border); }
.result-meta, .result-actions, .result-topline { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.result-topline strong { color: var(--text-1); }
.result-excerpt { margin: 0; color: var(--text-2); line-height: 1.65; }
.exact-filter { display: grid; gap: 14px; }
.exact-filter .filter-group { padding-bottom: 14px; border-bottom: 1px solid var(--border); }
.exact-filter .filter-actions { position: sticky; bottom: -18px; display: flex; gap: 8px; padding: 14px 0 0; background: var(--surface); }
.filter-options { display: grid; gap: 7px; margin-top: 7px; }
.filter-options label { grid-template-columns: 16px minmax(0,1fr) auto; align-items: center; }
.question-panel-title { margin-bottom: 12px; }
.question-panel-body { color: var(--text-1); font: var(--fs-15,15px)/var(--lh-reading) var(--font-paper); }
.question-panel-meta { display: flex; flex-wrap: wrap; gap: 6px; margin: 12px 0; }
/* 知识点标签（知识模块/子标签/数学能力）：加在难度旁，随更改标签更新 */
.question-panel-meta [data-basket-labels] { display: contents; }
[data-basket-labels] .chip { color: var(--accent); border-color: var(--accent-border); background: var(--accent-subtle); }
.question-image { display: block; max-width: 100%; max-height: 420px; margin: 12px auto; object-fit: contain; }
.markdown-text { white-space: pre-line; }
.answer-entry { display: grid; grid-template-columns: auto minmax(0,1fr); gap: 8px; padding: 9px 0; border-top: 1px solid var(--border); }
.answer-entry small { grid-column: 1/-1; color: var(--text-3); }

/* Review */
.review-tabs { margin-bottom: 16px; }
.review-queue-rail { width: clamp(240px, 21vw, 300px); display: grid; grid-template-rows: auto auto minmax(0,1fr) auto; gap: 9px; margin: 0; height: 100%; min-height: 0; grid-column: 1; grid-row: 1; }
.review-queue-rail > header { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; }
.review-queue-rail > header > div { min-width: 0; display: grid; gap: 2px; }
.review-queue-rail > header span { color: var(--text-3); font-size: var(--fs-11); }
.review-queue-rail > header .btn { margin-left: auto; }
.review-queue-track { min-height: 0; display: flex; flex-direction: column; gap: 8px; overflow-y: auto; padding: 2px 2px 8px; scroll-snap-type: y proximity; scrollbar-width: none; }
.review-queue-track::-webkit-scrollbar { display: none; }
.review-queue-item { flex: 0 0 auto; width: 100%; min-width: 0; display: grid; gap: 6px; padding: 10px 11px; overflow: hidden; scroll-snap-align: start; border: 1px solid var(--border); border-radius: var(--r-sm); color: var(--text-1); background: var(--surface); }
.review-queue-item:hover, .review-queue-item:focus-visible { color: var(--text-1); border-color: var(--accent-border); background: var(--accent-subtle); }
.review-queue-item.is-current { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.review-queue-item > span { display: flex; align-items: center; gap: 8px; }
.review-queue-item > span strong { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: var(--fs-12); }
.review-queue-item em { margin-left: auto; color: var(--text-3); font-size: var(--fs-11); font-style: normal; white-space: nowrap; }
.review-queue-item small { min-height: 32px; overflow: hidden; color: var(--text-2); font-size: var(--fs-11); line-height: 1.45; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.review-queue-item b { color: var(--warn); font-size: 10px; font-weight: 650; }
.review-queue-item b.is-clear { color: var(--ok); }
.review-shell { flex: 1 1 auto; min-height: 0; display: grid; grid-template-columns: auto minmax(0,1fr); gap: 16px; align-items: stretch; }
.review-main { min-width: 0; grid-column: 2; grid-row: 1; height: 100%; min-height: 0; }
.review-card { height: 100%; min-height: 0; display: grid; grid-template-rows: auto minmax(0,1fr) auto; padding: 0; overflow: hidden; }
.review-card-head { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; padding: 15px 18px; border-bottom: 1px solid var(--border); }
.review-body { min-height: 0; overflow-y: auto; scrollbar-width: none; padding: 28px clamp(18px,5vw,64px) 42px; color: var(--text-1); font: 20px/1.8 var(--font-paper); text-align: center; }
.review-body::-webkit-scrollbar { display: none; }
.review-body .question-panel-title { margin: 0 0 16px; }
.review-body .question-panel-title h2 { margin: 4px 0 0; font-size: 1.65em; }
.review-body .question-panel-meta { justify-content: center; margin: 16px 0; }
.review-body .question-panel-body { font-size: 20px; }
.review-body .question-panel-body .markdown-text { text-align: center; }
.review-body .question-table { margin-left: auto; margin-right: auto; }
.review-body .panel-section { text-align: left; }
.review-actions { display: flex; align-items: end; justify-content: flex-end; flex-wrap: wrap; gap: 8px; padding: 12px 18px; border-top: 1px solid var(--border); background: var(--surface-inset); }
.review-fields { display: flex; flex-wrap: wrap; align-items: end; gap: 8px; margin-right: auto; }
.review-actions .difficulty-field, .review-actions .task-type-field,
.review-actions .knowledge-field, .review-actions .subtag-field { width: auto; min-width: 96px; }
.review-actions .knowledge-field { min-width: 130px; }
.review-actions .subtag-field { min-width: 150px; }
.review-fields select { min-width: 96px; }

/* 更改标签气泡确认框 */
.label-bubble-anchor { position: relative; display: inline-flex; align-items: center; gap: 8px; }
.label-bubble { position: absolute; bottom: calc(100% + 12px); right: 0; width: 288px; padding: 14px 16px; background: var(--surface); border: 1px solid var(--border); border-radius: 14px; box-shadow: var(--sh-3); z-index: 60; }
.label-bubble[hidden] { display: none; }
.label-bubble-msg { margin: 0 0 12px; color: var(--text-1); font-weight: 650; font-size: var(--fs-14); }
.label-bubble-actions { display: flex; justify-content: flex-end; gap: 8px; margin-bottom: 10px; }
.label-bubble-noask { display: flex; align-items: center; justify-content: space-between; gap: 10px; border-top: 1px solid var(--border); padding-top: 9px; color: var(--text-2); font-size: var(--fs-12); }
.label-bubble-check { border: 0; background: transparent; cursor: pointer; font-size: 16px; line-height: 1; padding: 2px 4px; border-radius: 8px; opacity: .45; transition: opacity .15s ease, background .15s ease; }
.label-bubble-check:hover { background: var(--surface-inset); }
.label-bubble-check[aria-pressed="true"] { opacity: 1; }
.label-bubble-arrow { position: absolute; bottom: -6px; right: 44px; width: 12px; height: 12px; background: var(--surface); border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); transform: rotate(45deg); }
.review-ai-form-state { flex: 1 0 100%; display: flex; align-items: center; gap: 8px; padding: 9px 11px; border: 1px solid var(--accent-border); border-radius: var(--r-sm); color: var(--text-2); background: var(--accent-subtle); font-size: var(--fs-12); }
.review-ai-form-state strong { color: var(--accent); }
.review-ai-form-state.is-modified { border-color: var(--warn); background: var(--warn-subtle); }
.review-ai-form-state.is-modified strong { color: var(--warn); }
.review-ai-complete { display: grid; gap: 14px; margin-bottom: 16px; padding: 18px; }
.review-ai-complete-head { display: flex; align-items: flex-start; gap: 16px; }
.review-ai-complete-head > div { min-width: 0; flex: 1; }
.review-ai-complete-head p { margin: 4px 0 0; color: var(--text-2); }
.review-ai-complete-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 8px; margin: 0; }
.review-ai-complete-grid > div { padding: 10px 12px; border: 1px solid var(--border); border-radius: var(--r-sm); background: var(--surface); }
.review-ai-complete-grid dt { color: var(--text-3); font-size: var(--fs-11); }
.review-ai-complete-grid dd { margin: 4px 0 0; color: var(--text-1); font-weight: 650; }
.review-success { display: grid; justify-items: start; gap: 12px; padding: 24px; }
.review-success p { margin: 0; }
.issue-list { display: grid; gap: 8px; }
.issue-item { padding: 10px; border: 1px solid var(--border); border-radius: var(--r-sm); }
.issue-item strong { display: block; margin-bottom: 3px; }
.review-ai-history { display: grid; gap: 9px; }
.review-ai-history article { display: grid; gap: 6px; padding: 11px 12px; border: 1px solid var(--border); border-radius: var(--r-sm); background: var(--surface-inset); }
.review-ai-history article > div { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.review-ai-history time, .review-ai-history small { color: var(--text-3); font-size: var(--fs-11); }
.review-ai-history p { margin: 0; color: var(--text-2); font-size: var(--fs-12); }
.review-batch-tools { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; padding: 2px 0; }
.review-batch-tools label { width: auto; display: flex; grid-template-columns: 16px auto; align-items: center; gap: 7px; }
.review-batch-tools > span { margin-left: auto; color: var(--text-3); font-size: var(--fs-11); }
.review-batch-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 10px; }
.review-batch-card { position: relative; min-width: 0; display: grid; gap: 10px; padding: 14px; cursor: pointer; }
.review-batch-card:hover { border-color: var(--accent-border); }
.review-batch-card.is-selected { border-color: var(--accent); background: var(--accent-subtle); box-shadow: inset 0 0 0 1px var(--accent); }
.review-batch-select { width: auto; grid-template-columns: 16px auto; align-items: center; justify-self: start; gap: 6px; color: var(--text-3); font-size: var(--fs-11); }
.review-batch-card-head { display: flex; align-items: flex-start; gap: 8px; }
.review-batch-card-head > div { min-width: 0; display: grid; }
.review-batch-card-head > div strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.review-batch-card-head > div small { color: var(--text-3); }
.review-batch-card-head .badge { margin-left: auto; white-space: nowrap; }
.review-batch-card p { min-height: 42px; margin: 0; overflow: hidden; color: var(--text-2); font-size: var(--fs-12); line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.review-batch-card footer { display: flex; align-items: center; gap: 8px; padding-top: 9px; border-top: 1px solid var(--border); font-size: var(--fs-11); }
.review-batch-card footer span { color: var(--text-3); }
.review-batch-card footer a { margin-left: auto; }
.batch-actions { position: sticky; bottom: 10px; z-index: 4; display: flex; align-items: center; flex-wrap: wrap; gap: 10px; box-shadow: var(--sh-2); }
.batch-actions label { width: auto; grid-template-columns: auto minmax(90px,120px); align-items: center; }

/* Basket */
.basket-summary { display: grid; grid-template-columns: repeat(2,1fr); gap: 8px; margin-bottom: 14px; }
.basket-summary > div { padding: 12px; border: 1px solid var(--border); border-radius: var(--r-sm); background: var(--surface-inset); }
.basket-summary strong, .basket-summary small { display: block; }
.basket-summary small { color: var(--text-3); }
.basket-list { display: grid; margin-bottom: 16px; }
.basket-item { min-height: 58px; display: grid; grid-template-columns: minmax(0,1fr) auto; align-items: center; gap: 8px; padding: 8px 0; border-bottom: 1px solid var(--border); }
.basket-item > div:first-child { min-width: 0; display: grid; }
.basket-item strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 12px; }
.basket-item small { color: var(--text-3); }
.basket-order { display: flex; }
.basket-order .icon-button { width: 27px; height: 27px; }
.panel-form { display: grid; gap: 9px; padding-top: 14px; border-top: 1px solid var(--border); }
.panel-form + .btn { width: 100%; margin-top: 10px; }

/* Compose */
.compose-flow { display: flex; align-items: center; gap: 8px; margin-bottom: 18px; color: var(--text-3); }
.compose-flow span { min-height: 30px; display: inline-flex; align-items: center; padding: 0 10px; border: 1px solid var(--border); border-radius: 999px; background: var(--surface); }
.compose-flow span.active { color: var(--accent); border-color: var(--accent-border); background: var(--accent-subtle); }
.compose-grid { display: grid; grid-template-columns: clamp(280px, 23%, 340px) minmax(0,1fr); gap: clamp(14px, 1.6vw, 22px); align-items: start; }
.compose-settings { position: sticky; top: 0; }
/* 组卷模块内容占满主区宽度：设置试卷贴左、题目顺序与作答空间贴右，预览在中间自适应 */
body[data-surface="compose"] main > * { width: 100%; margin-left: 0; margin-right: 0; }
/* 组卷模块占满一屏、无页面滚动：设置栏/作答空间栏各自内部滚动，预览窗口向下延伸填满视口 */
@media (min-width: 1181px) {
  body[data-surface="compose"] main { overflow: hidden; }
  body[data-surface="compose"] main > .compose-flow { margin-bottom: 0; }
  body[data-surface="compose"] main > .compose-grid {
    height: calc(100vh - var(--topbar-h) - 114px);
    min-height: 540px;
    grid-template-rows: minmax(0, 1fr);
    align-items: stretch;
  }
  body[data-surface="compose"] main > .compose-grid > .compose-settings {
    position: static;
    max-height: 100%;
    overflow: auto;
  }
  body[data-surface="compose"] .paper-workspace { height: 100%; grid-template-rows: minmax(0,1fr); align-items: stretch; }
  body[data-surface="compose"] .paper-workspace > .paper-summary {
    display: flex; flex-direction: column; min-height: 0; height: 100%;
  }
  body[data-surface="compose"] .preview-frame-wrap { height: auto; flex: 1 1 auto; min-height: 300px; }
  body[data-surface="compose"] .paper-workspace > .paper-editor { height: 100%; max-height: none; }
}
/* 组卷模块：隐藏各窗口滚动条但保留滚动 */
body[data-surface="compose"] main,
body[data-surface="compose"] .work-panel,
body[data-surface="compose"] main *,
body[data-surface="compose"] .work-panel * { scrollbar-width: none; }
body[data-surface="compose"] main::-webkit-scrollbar,
body[data-surface="compose"] .work-panel::-webkit-scrollbar,
body[data-surface="compose"] main *::-webkit-scrollbar,
body[data-surface="compose"] .work-panel *::-webkit-scrollbar { display: none; }
.compose-section-label { display: block; padding-top: 8px; color: var(--text-3); font-size: 11px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.source-choice { display: grid; gap: 8px; }
.source-choice label { grid-template-columns: 16px minmax(0,1fr); }
.collection-preview { padding: 11px; border: 1px solid var(--accent-border); border-radius: var(--r-sm); background: var(--accent-subtle); }
.paper-workspace { min-width: 0; display: grid; grid-template-columns: minmax(0,1fr) clamp(300px, 26%, 380px); gap: clamp(14px, 1.6vw, 22px); align-items: start; }
.paper-canvas { grid-column: 1 / -1; }
.paper-summary h1 { margin-top: 5px; }
.paper-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.preview-tabs { display: flex; gap: 6px; margin-top: 16px; }
.preview-tabs .active { color: var(--accent); border-color: var(--accent-border); background: var(--accent-subtle); }
.preview-frame-wrap { height: min(58vh,680px); min-height: 360px; margin-top: 10px; overflow: hidden; border: 1px solid var(--border); border-radius: var(--r-sm); background: var(--surface-inset); }
.preview-frame-wrap iframe { width: 100%; height: 100%; border: 0; background: #fff; }
.answer-space-settings { padding: 12px; }
.answer-space-settings p { font-size: 12px; }
/* 题目顺序与作答空间：右侧窄栏，卡片式堆叠，配合三栏组卷布局 */
.paper-editor { padding: 0; overflow: hidden; position: sticky; top: 0; max-height: calc(100vh - 108px); display: flex; flex-direction: column; }
.editor-toolbar { flex: 0 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 16px; border-bottom: 1px solid var(--border); background: var(--surface-2); }
.editor-toolbar > div { min-width: 0; display: grid; gap: 3px; }
.editor-toolbar .muted { margin: 0; font-size: 12px; }
.paper-editor table { display: block; flex: 1 1 auto; min-height: 0; overflow: auto; border: 0; border-collapse: separate; border-spacing: 0; }
.paper-editor thead, .paper-editor tfoot { display: none; }
.paper-editor tbody { display: grid; gap: 8px; padding: 10px; }
.paper-editor tbody tr { transition: opacity .15s ease, background .15s ease; display: grid; grid-template-columns: auto minmax(0,1fr) auto auto; gap: 2px 8px; align-items: center; padding: 8px 10px; border: 1px solid var(--border); border-radius: var(--r-sm); background: var(--surface); }
.paper-editor tbody tr:hover { background: var(--accent-subtle); }
.paper-editor tbody tr.is-dragging { opacity: .45; background: var(--accent-subtle); }
.paper-editor tbody td { padding: 0; border: 0; background: transparent; }
.paper-editor td.editor-number { grid-column: 1; grid-row: 1 / 4; width: auto; min-width: 0; display: flex; align-items: center; gap: 6px; font-weight: 650; white-space: nowrap; }
.paper-editor td.editor-number .editor-drag-handle { margin-right: 0; }
.paper-editor tbody tr td:nth-child(2) { grid-column: 2; grid-row: 1; }
.paper-editor tbody tr td:nth-child(4) { grid-column: 2; grid-row: 2; }
.paper-editor tbody tr td:nth-child(4)::before { content: '难度 '; color: var(--text-3); }
.paper-editor tbody tr td:nth-child(5) { grid-column: 3; grid-row: 2; }
.paper-editor tbody tr td:nth-child(5)::after { content: ' 分'; color: var(--text-3); }
.paper-editor tbody tr td:nth-child(3) { grid-column: 2 / 4; grid-row: 3; }
.paper-editor td.editor-actions { grid-column: 4; grid-row: 1 / 4; width: auto; display: flex; flex-direction: column; gap: 4px; align-items: flex-end; justify-content: center; white-space: nowrap; }
.editor-drag-handle { width: 26px; height: 26px; margin-right: 0; padding: 0; border: 0; border-radius: 6px; color: var(--text-3); background: transparent; cursor: grab; font-size: 18px; line-height: 1; }
.editor-drag-handle:hover, .editor-drag-handle:focus-visible { color: var(--accent); background: var(--accent-subtle); }
.editor-drag-handle:active { cursor: grabbing; }
.paper-editor .editor-actions .icon-button { width: 28px; height: 28px; margin-left: 0; }
.paper-editor .editor-actions .move-up-icon { transform: rotate(180deg); }
.paper-editor .editor-actions .icon-button:disabled { opacity: .35; }
.paper-editor .editor-actions .danger { color: var(--danger); }
.paper-editor select { width: 100%; min-width: 0; height: 32px; }
.editor-unsaved { margin: 0; padding: 11px 16px; color: var(--warn); background: var(--warn-subtle); font-size: 12px; }
.paper-canvas { min-height: 480px; display: grid; place-items: center; text-align: center; }
.paper-placeholder { max-width: 500px; }
.paper-placeholder p { color: var(--text-3); }
.history-list { display: grid; }
.history-list a { display: grid; grid-template-columns: auto minmax(0,1fr) auto; align-items: center; gap: 10px; min-height: 45px; border-top: 1px solid var(--border); color: var(--text-1); }
.history-list a span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.history-list small { color: var(--text-3); }

/* Paper library */
.paper-library-head { align-items: flex-end; }
.paper-library-head .btn { flex: 0 0 auto; }
.paper-library-filters { display: grid; grid-template-columns: minmax(220px,2fr) repeat(4,minmax(110px,1fr)) auto; gap: 10px; align-items: end; margin-bottom: 18px; }
.paper-library-filters .filter-field { min-width: 0; }
.paper-library-filters .filter-actions { display: flex; gap: 8px; }
.paper-library-list { display: grid; gap: 12px; }
.paper-library-card { display: grid; gap: 15px; }
.paper-library-card-head { display: flex; align-items: flex-start; gap: 14px; }
.paper-library-card-head > div { min-width: 0; }
.paper-library-card-head h2 { margin-bottom: 5px; }
.paper-library-code { flex: 0 0 auto; padding: 6px 8px; border: 1px solid var(--border); border-radius: var(--r-sm); color: var(--accent); background: var(--accent-subtle); font: 650 var(--fs-12) var(--font-mono); letter-spacing: .08em; }
.paper-library-card-state { margin-left: auto; display: flex; align-items: center; gap: 7px; }
.paper-library-meta { display: flex; flex-wrap: wrap; gap: 7px 14px; color: var(--text-2); font-size: var(--fs-13); }
.paper-library-meta span, .paper-library-meta time { white-space: nowrap; }
.paper-library-sources { display: flex; flex-wrap: wrap; align-items: baseline; gap: 7px; color: var(--text-3); font-size: var(--fs-12); }
.paper-library-sources strong { color: var(--text-2); }
.paper-library-sources .source-link { color: var(--accent); text-decoration: none; }
.paper-library-sources .source-link:hover { text-decoration: underline; }
.paper-library-actions { display: flex; flex-wrap: wrap; gap: 8px; padding-top: 3px; border-top: 1px solid var(--border); }
.paper-library-actions .btn { min-height: 34px; }
.paper-library-actions form { margin: 0; }
.paper-library-actions .btn.danger { color: var(--danger); border-color: color-mix(in srgb,var(--danger) 45%,var(--border)); }
.paper-library-empty { padding: 48px 22px; text-align: center; }
.paper-library-empty p { max-width: 480px; margin: 8px auto 18px; color: var(--text-3); }
.paper-pagination { display: flex; align-items: center; justify-content: flex-end; gap: 6px; margin-top: 20px; flex-wrap: wrap; }
.paper-pagination .page-status { color: var(--text-3); font-size: var(--fs-12); }
.paper-pagination [aria-disabled='true'] { cursor: default; opacity: .45; pointer-events: none; }
.paper-pagination .pagination-btn { min-width: 34px; height: 34px; display: inline-flex; align-items: center; justify-content: center; padding: 0 10px; border: 1px solid var(--border); border-radius: 10px; color: var(--text-2); background: var(--surface); font-weight: 650; cursor: pointer; transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background var(--dur) var(--ease); }
.paper-pagination .pagination-btn:hover { border-color: var(--accent-border); color: var(--accent); }
.paper-pagination .pagination-btn.current { color: #fff; background: var(--accent); border-color: var(--accent); }
.paper-pagination .pagination-gap { align-self: center; padding: 0 4px; color: var(--text-3); }
.paper-pagination .pagination-jump { display: inline-flex; align-items: center; gap: 6px; margin-left: 4px; }
.paper-pagination .pagination-jump input { width: 62px; height: 30px; padding: 0 8px; border: 1px solid var(--border); border-radius: 9px; text-align: center; font-size: var(--fs-12); background: var(--surface); }
.paper-pagination .pagination-jump .btn { height: 30px; }
.paper-pagination .pagination-jump .muted { color: var(--text-3); font-size: var(--fs-12); }

/* Import */
.upload-card { min-height: 330px; display: grid; place-items: center; border: 1px dashed var(--border-strong); background: var(--surface); }
.upload-form { width: min(100%,600px); display: grid; justify-items: center; gap: 14px; text-align: center; }
.upload-form h2, .upload-form p { margin: 0; }
.upload-form input[type='file'] { min-height: 52px; padding: 12px; background: var(--surface-inset); }
.upload-help { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; color: var(--text-3); font-size: 12px; }
.import-progress { width: 100%; }
.import-progress progress { width: 100%; height: 8px; accent-color: var(--accent); }
.pipeline { display: grid; gap: 0; }
.pipeline-step { position: relative; display: grid; grid-template-columns: 24px minmax(0,1fr); gap: 9px; padding: 8px 0; color: var(--text-3); }
.pipeline-step::before { content: ''; width: 1px; position: absolute; left: 11px; top: 30px; bottom: -4px; background: var(--border); }
.pipeline-step:last-child::before { display: none; }
.pipeline-step i { width: 22px; height: 22px; display: grid; place-items: center; border: 1px solid var(--border-strong); border-radius: 50%; color: var(--text-2); background: var(--surface); font-style: normal; font-size: 11px; }
.pipeline-step strong { display: block; color: var(--text-2); }

/* Compatibility surfaces */
.three-pane { display: grid; grid-template-columns: 230px minmax(400px,1fr) 350px; gap: 12px; }
.pane { min-width: 0; overflow: auto; border: 1px solid var(--border); background: var(--surface); }
.pane-head { padding: 13px 15px; border-bottom: 1px solid var(--border); background: var(--surface-2); font-weight: 650; }
.pane-body { padding: 15px; }
.queue-item { display: flex; justify-content: space-between; padding: 9px; color: var(--text-2); }
.queue-item.active { color: var(--accent); background: var(--accent-subtle); }
.split { display: grid; grid-template-columns: 1fr 360px; gap: 14px; }
.empty-state { text-align: center; }
.paper { font-family: var(--font-paper); line-height: var(--lh-reading); }

@media (max-width: 1180px) {
  .shell { grid-template-columns: var(--nav-w-compact) minmax(0,1fr); }
  .agent-sidebar-mode .shell { grid-template-columns: var(--nav-w-compact) minmax(0,1fr) clamp(390px,31vw,460px); }
  .nav { padding-inline: 10px; }
  .nav-label { display: none; }
  .nav-item { justify-content: center; padding-inline: 8px; }
  .topbar { grid-template-columns: minmax(0,1fr) auto; padding-inline: 18px; }
}

@media (max-width: 1180px) {
  .paper-workspace { grid-template-columns: minmax(0,1fr); }
  .paper-editor { position: static; max-height: none; }
}

@media (max-width: 920px) {
  .shell { grid-template-columns: var(--nav-w-compact) minmax(0,1fr); }
  .work-panel { width: min(92vw,460px); height: min(650px,calc(100vh - 92px)); right: 18px; bottom: 18px; }
  .compose-grid, .home-lists { grid-template-columns: 1fr; }
  .home-modules { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .compose-settings { position: static; }
  .three-pane { grid-template-columns: 1fr; }
  .paper-library-filters { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .paper-library-filters .filter-actions { grid-column: 1/-1; justify-content: flex-end; }
}

/* 窄屏时题篮退回单列：选题列表变横向条，卡片在下 */
@media (max-width: 1000px) {
  body[data-surface="review"] .review-shell { grid-template-columns: minmax(0,1fr); grid-template-rows: auto minmax(0,1fr); }
  .review-main, .review-queue-rail { grid-column: auto; grid-row: auto; }
  .review-queue-rail { width: 100%; height: auto; min-height: 0; margin: -4px 0 0; }
  .review-queue-track { flex-direction: row; overflow-x: auto; overflow-y: hidden; scroll-snap-type: x proximity; }
  .review-queue-item { flex-basis: min(78vw,250px); width: auto; }
  .review-main { height: auto; min-height: 320px; }
  .review-card { height: auto; min-height: 480px; }
}

@media (max-width: 700px) {
  .shell { display: block; }
  .work-panel-collapsed .shell { display: block; }
  .workspace { height: auto; min-height: 100vh; grid-template-rows: auto auto; padding-bottom: 64px; }
  .nav { height: 62px; width: 100%; position: fixed; inset: auto 0 0; z-index: 25; display: block; padding: 5px 8px; border: 0; border-top: 1px solid var(--border); }
  .nav-links { height: 100%; display: grid; grid-template-columns: repeat(6,1fr); gap: 2px; }
  .nav-item { min-height: 50px; display: grid; justify-items: center; gap: 0; padding: 3px; }
  .nav-icon { font-size: 16px; }
  .nav-label { display: block; }
  .nav-label strong { display: block; font-size: 10px; }
  .nav-label small { display: none; }
  .topbar { min-height: 56px; grid-template-columns: minmax(0,1fr) auto; grid-template-rows: auto; gap: 4px 10px; padding: 7px 12px; }
  .topbar-actions { grid-column: 2; grid-row: 1; }
  .language-toggle { min-width: 52px; padding-inline: 7px; }
  .work-panel {
    width: 100%;
    height: min(76vh,680px);
    max-height: calc(100vh - 124px);
    left: 0 !important;
    right: 0 !important;
    top: auto !important;
    bottom: 62px !important;
    border-right: 0;
    border-bottom: 0;
    border-left: 0;
    border-radius: var(--r-lg) var(--r-lg) 0 0;
    transform: translateY(110%);
    transition: transform var(--dur) var(--ease);
  }
  .work-panel[data-agent-locked='true'],
  .work-panel[data-agent-locked='false'] {
    width: 100%;
    height: min(76vh,680px);
    min-width: 0;
    min-height: 0;
    max-width: none;
    max-height: calc(100vh - 124px);
    resize: none;
    border-radius: var(--r-lg) var(--r-lg) 0 0;
  }
  .work-panel-open .work-panel { transform: translateY(0); }
  .work-panel-backdrop { position: fixed; inset: 0 0 62px; z-index: 39; border: 0; background: rgba(20,24,34,.32); }
  .work-panel-open .work-panel-backdrop { display: block; }
  main { padding: 22px 14px 36px; }
  .task-grid, .form-grid.two, .check-grid, .compose-grid { grid-template-columns: 1fr; }
  .home-modules { grid-template-columns: 1fr; }
  .featured-agent-card { height: 620px; }
  .featured-agent-head { align-items: flex-start; padding: 16px; }
  .featured-agent-status { display: none; }
  .page-head { display: grid; }
  .result-actions .spacer { display: none; }
  .review-card { min-height: calc(100vh - 230px); }
  .review-actions { flex-wrap: wrap; }
  .review-fields { width: 100%; margin-right: 0; }
  .review-fields label { flex: 1 1 46%; min-width: 0; }
  .review-fields select { width: 100%; min-width: 0; }
  .review-ai-form-state { align-items: flex-start; flex-direction: column; gap: 2px; }
  .review-ai-complete-head { display: grid; }
  .review-ai-complete-grid { grid-template-columns: 1fr; }
  .review-batch-grid { grid-template-columns: 1fr; }
  .review-queue-item { flex-basis: min(78vw,250px); }
  .batch-actions .spacer { display: none; }
  .batch-actions .btn { flex: 1 1 120px; }
  .compose-flow { overflow-x: auto; }
  .paper-actions .btn { flex: 1 1 160px; }
  .paper-library-filters { grid-template-columns: 1fr; }
  .paper-library-filters .filter-actions { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); }
  .paper-library-card-head { display: grid; grid-template-columns: minmax(0,1fr) auto; }
  .paper-library-actions .btn { flex: 1 1 145px; }
}

/* 温暖亲和：温和微交互，轻量过渡 + 卡片轻微上浮（链接卡片才上浮，避免影响 sticky） */
.card { transition: box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease); }
a.card:hover { transform: translateY(-1px); box-shadow: var(--sh-2); }
.btn, .nav-item, .activity-item, .home-module, .icon-button {
  transition: background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease),
    color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}
.btn:active, .icon-button:active { transform: translateY(0) scale(.985); }
a.activity-item:hover { transform: translateX(2px); }

@media print {
  .nav, .topbar, .work-panel, .work-panel-backdrop { display: none !important; }
  .shell, .workspace { display: block; height: auto; }
  main { overflow: visible; padding: 0; }
}

/* AI 工作面板（含侧边栏）全站隐藏、不启用；主内容占满宽度，不预留侧栏列。 */
.work-panel,
.work-panel-backdrop { display: none !important; }
.agent-sidebar-mode .shell { grid-template-columns: var(--nav-w) minmax(0,1fr) !important; }

/* 题篮工作台 */
.basket-filter { margin: 8px 2px 10px; }
.basket-filter input { height: 36px; }
/* 快速选题分页：右下角数字按钮 */
.basket-pagination { display: flex; justify-content: flex-end; align-items: center; flex-wrap: wrap; gap: 6px; padding: 4px 2px 2px; }
.basket-pagination[hidden] { display: none; }
.basket-pagination .page-btn { min-width: 32px; height: 30px; display: inline-flex; align-items: center; justify-content: center; padding: 0 8px; border: 1px solid var(--border); border-radius: 8px; color: var(--text-2); background: var(--surface); font-weight: 650; font-size: var(--fs-12); cursor: pointer; transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background var(--dur) var(--ease); }
.basket-pagination .page-btn:hover { border-color: var(--accent-border); color: var(--accent); }
.basket-pagination .page-btn.current { color: #fff; background: var(--accent); border-color: var(--accent); }
.basket-pagination .page-gap { align-self: center; padding: 0 2px; color: var(--text-3); font-size: var(--fs-12); }
.basket-pagination .page-jump { display: inline-flex; align-items: center; gap: 5px; margin-left: 4px; }
.basket-pagination .page-jump input { width: 52px; height: 30px; padding: 0 6px; border: 1px solid var(--border); border-radius: 8px; text-align: center; font-size: var(--fs-12); background: var(--surface); }
.basket-pagination .page-jump .muted { color: var(--text-3); font-size: var(--fs-12); }