:root {
  --canvas: #efeae0;
  --paper: #fffdf8;
  --paper-warm: #faf6ed;
  --ink: #1f322b;
  --ink-soft: #4c5a53;
  --muted: #777e77;
  --line: #ded7c9;
  --line-strong: #cdc4b4;
  --green: #235f4e;
  --green-dark: #18493b;
  --green-soft: #e6efe9;
  --rust: #a95535;
  --rust-soft: #f8ebe5;
  --gold: #92651f;
  --gold-soft: #f8f0dd;
  --danger: #a33a3a;
  --shadow: 0 12px 36px rgba(46, 48, 39, 0.07);
  --font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  --font-reading: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
}

body {
  min-width: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  color: var(--ink);
  background:
    radial-gradient(900px 500px at 12% -8%, #fffaf0 0%, transparent 60%),
    radial-gradient(800px 420px at 100% 0%, #e8eee8 0%, transparent 48%),
    var(--canvas);
  font-family: var(--font-ui);
  -webkit-font-smoothing: antialiased;
}

body[data-view="review"] {
  --canvas: #f8f7f3;
  --paper: #ffffff;
  --paper-warm: #fbfaf7;
  --line: #eae6dd;
  --line-strong: #dcd6cb;
  --green: #2f725e;
  --green-dark: #245947;
  --green-soft: #edf6f1;
  --rust: #aa6248;
  --rust-soft: #fcf3ee;
  --gold: #9a7134;
  --gold-soft: #fbf5e9;
  --shadow: 0 12px 38px rgba(52, 65, 56, 0.055);
  background:
    radial-gradient(900px 520px at 8% -10%, rgba(255, 255, 255, 0.98), transparent 60%),
    radial-gradient(780px 430px at 100% 0%, rgba(235, 245, 239, 0.8), transparent 52%),
    var(--canvas);
}

button,
textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
}

::selection {
  background: #cee0d6;
}

:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}

/* ---------- 顶栏 ---------- */

.topbar {
  position: relative;
  z-index: 30;
  flex: 0 0 62px;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 18px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(15px);
}

.icon-action {
  display: none;
  place-items: center;
  width: 38px;
  height: 38px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--paper);
  color: var(--ink-soft);
}

.brand {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 9px;
  color: inherit;
  text-decoration: none;
}

.brand-seal {
  display: grid;
  place-items: center;
  width: 33px;
  height: 33px;
  border: 1px solid var(--green);
  border-radius: 8px;
  color: var(--green);
  font-family: var(--font-reading);
  font-size: 17px;
  font-weight: 600;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-copy strong {
  font-family: var(--font-reading);
  font-size: 16px;
  letter-spacing: 0.08em;
}

.brand-copy small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.1em;
}

.context-strip {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-left: 4px;
  padding-left: 16px;
  border-left: 1px solid var(--line);
}

.context-title,
.context-meta {
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.context-title {
  color: var(--ink-soft);
  font-size: 13px;
}

.context-meta {
  display: flex;
  gap: 6px;
  color: var(--muted);
  font-size: 10px;
}

.topbar-end {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 11px;
}

.visibility-note {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 9px;
  border: 1px solid #ceddd4;
  border-radius: 999px;
  background: #f2f7f3;
  color: var(--green);
  font-size: 10px;
}

.logout-form {
  margin: 0;
}

.logout-form button {
  padding: 4px 6px;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 9px;
}

.logout-form button:hover {
  color: var(--rust);
}

.teacher-avatar {
  width: 34px;
  height: 34px;
  padding: 0;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: var(--paper);
  color: var(--ink-soft);
  font-size: 12px;
}

/* ---------- 工作区 ---------- */

.workspace {
  flex: 1;
  min-width: 0;
  min-height: 0;
  display: grid;
  grid-template-columns: 272px minmax(0, 1fr) 350px;
  gap: 14px;
  padding: 14px;
}

.panel {
  min-width: 0;
  min-height: 0;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--paper);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.eyebrow {
  margin: 0 0 7px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.16em;
}

/* ---------- 作业上下文 ---------- */

.context-panel {
  display: flex;
  flex-direction: column;
  gap: 22px;
  padding: 21px 17px;
  overflow-y: auto;
  scrollbar-width: thin;
}

.context-heading h1 {
  margin: 0;
  font-family: var(--font-reading);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
}

.back-to-class {
  display: inline-block;
  margin-bottom: 9px;
  color: var(--green);
  font-size: 9px;
  text-decoration: none;
}

.attempt-meta {
  display: flex;
  gap: 6px;
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 10px;
}

.context-section h2 {
  margin: 0 0 10px;
  color: var(--ink-soft);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.section-heading-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.section-heading-row span {
  color: var(--muted);
  font-size: 9px;
}

.detail-list {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.detail-list div {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 8px;
  align-items: baseline;
}

.detail-list dt {
  color: var(--muted);
  font-size: 10px;
}

.detail-list dd {
  min-width: 0;
  margin: 0;
  color: var(--ink-soft);
  font-size: 11px;
  line-height: 1.45;
}

.status-badge {
  display: inline-block;
  padding: 2px 7px;
  border-radius: 999px;
  font-size: 9px;
  font-weight: 600;
}

.status-pending {
  background: var(--gold-soft);
  color: var(--gold);
}

.rubric-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.rubric-item {
  position: relative;
  padding: 9px 8px 10px;
  border-radius: 10px;
}

.rubric-item:first-child {
  background: var(--green-soft);
}

.rubric-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.rubric-name {
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 600;
}

.rubric-points {
  color: var(--muted);
  font-size: 9px;
  font-variant-numeric: tabular-nums;
}

.rubric-item p {
  margin: 4px 0 0;
  padding-right: 48px;
  color: var(--muted);
  font-size: 9px;
  line-height: 1.5;
}

.criterion-state {
  position: absolute;
  right: 8px;
  bottom: 9px;
  color: var(--green);
  font-size: 8px;
  font-weight: 600;
}

.criterion-state.is-pending {
  color: var(--rust);
}

.context-note {
  margin-top: auto;
  padding: 12px 13px;
  border: 1px dashed var(--line-strong);
  border-radius: 12px;
  background: var(--paper-warm);
}

.context-note span {
  color: var(--rust);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.context-note p {
  margin: 6px 0 0;
  color: var(--ink-soft);
  font-size: 10px;
  line-height: 1.65;
}

/* ---------- 审核主区 ---------- */

.review-panel {
  display: flex;
  flex-direction: column;
}

.review-toolbar {
  flex: 0 0 auto;
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 11px 24px;
  border-bottom: 1px solid var(--line);
  background: var(--paper-warm);
  box-shadow: inset 0 -1px rgba(255, 255, 255, 0.7);
}

.review-state {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--muted);
  font-size: 10px;
}

.state-dot {
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 3px rgba(35, 95, 78, 0.12);
}

.state-chip {
  padding: 3px 7px;
  border-radius: 999px;
  background: var(--rust-soft);
  color: var(--rust);
  font-size: 9px;
}

.toolbar-actions {
  min-width: 0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 7px;
}

.feedback-target {
  color: var(--muted);
  font-size: 9px;
  white-space: nowrap;
}

.toolbar-button {
  min-height: 30px;
  padding: 0 10px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--paper);
  color: var(--ink-soft);
  font-size: 10px;
  white-space: nowrap;
  transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}

.toolbar-button:hover {
  border-color: var(--green);
  color: var(--green);
}

.toolbar-button:disabled {
  opacity: 0.55;
  cursor: wait;
}

.complete-review-button {
  border-color: var(--green);
  background: var(--green);
  color: #fff;
}

.complete-review-button:hover {
  background: var(--green-dark);
  color: #fff;
}

.count-pill {
  display: inline-grid;
  place-items: center;
  min-width: 17px;
  height: 17px;
  padding: 0 4px;
  border-radius: 999px;
  background: var(--green-soft);
  color: var(--green-dark);
  font-size: 8px;
}

.submission-preview {
  position: relative;
  flex: 0 1 auto;
  max-height: 34%;
  min-width: 0;
  padding: 17px 32px 19px;
  overflow-y: auto;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(500px 170px at 0 0, rgba(237, 246, 241, 0.72), transparent 70%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(250, 252, 250, 0.86));
  scrollbar-width: thin;
}

.preview-meta {
  min-width: 0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 7px;
  color: var(--muted);
  font-size: 9px;
}

.submission-label {
  padding: 3px 7px;
  border-radius: 5px;
  background: var(--green-soft);
  color: var(--green-dark);
  color: var(--ink-soft);
  font-weight: 600;
}

.attachment {
  margin-left: auto;
  padding: 3px 7px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--paper);
}

.submission-text {
  margin: 11px 0 0;
  color: var(--ink-soft);
  font-family: var(--font-reading);
  font-size: 13px;
  line-height: 1.82;
  white-space: pre-line;
  overflow-wrap: anywhere;
}

.feedback-workspace {
  flex: 1;
  min-width: 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.feedback-heading {
  flex: 0 0 auto;
  min-width: 0;
  padding: 23px 38px 7px;
}

.feedback-title {
  display: block;
  width: 100%;
  min-width: 0;
  padding: 0;
  border: 0;
  outline: none;
  overflow: hidden;
  resize: none;
  background: transparent;
  font-family: var(--font-reading);
  font-size: 22px;
  font-weight: 600;
  line-height: 1.45;
}

.feedback-editor {
  flex: 1;
  width: 100%;
  min-width: 0;
  min-height: 0;
  padding: 7px 38px 26px;
  border: 0;
  outline: none;
  resize: none;
  background: transparent;
  color: var(--ink);
  font-family: var(--font-reading);
  font-size: 16px;
  line-height: 1.92;
  overflow-wrap: anywhere;
  scrollbar-width: thin;
}

.review-footer {
  flex: 0 0 auto;
  min-width: 0;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 22px;
  border-top: 1px solid var(--line);
  background: var(--paper-warm);
  color: var(--muted);
  font-size: 10px;
}

.text-counts {
  display: flex;
  gap: 7px;
  font-variant-numeric: tabular-nums;
}

.text-counts strong {
  color: var(--ink-soft);
}

.save-state {
  color: var(--green);
}

.save-state.is-warning {
  color: var(--gold);
}

.save-state.is-error {
  color: var(--danger);
}

/* ---------- 审核助手 ---------- */

.assistant-panel {
  display: flex;
  flex-direction: column;
  padding: 20px 17px;
  overflow-y: auto;
  scrollbar-width: thin;
}

.assistant-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.assistant-heading h2 {
  margin: 0;
  font-family: var(--font-reading);
  font-size: 19px;
  font-weight: 600;
}

.assistant-heading p:last-child {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.6;
}

.assistant-count {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--green);
  color: #fff;
  font-size: 11px;
}

.assistant-count.is-empty {
  background: var(--line);
  color: var(--muted);
}

.assistant-card {
  position: relative;
  overflow: hidden;
  margin-top: 15px;
  padding: 15px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #ffffff;
  box-shadow: 0 6px 18px rgba(46, 48, 39, 0.04);
  transition: opacity 0.18s ease, transform 0.18s ease, border-color 0.18s ease;
}

.assistant-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 2px;
  background: linear-gradient(90deg, #d8b17d, #efe2cd);
}

.assistant-card:hover {
  transform: translateY(-1px);
  border-color: #e4d8c8;
}

.assistant-card.is-resolved {
  opacity: 0.58;
}

.card-labels {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.card-label {
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--gold-soft);
  color: var(--gold);
  font-size: 9px;
  font-weight: 600;
}

.card-weight {
  color: var(--muted);
  font-size: 9px;
}

.assistant-card h3 {
  margin: 11px 0 8px;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.45;
}

.assistant-card blockquote {
  margin: 0;
  padding: 9px 11px;
  border-left: 2px solid var(--rust);
  border-radius: 0 8px 8px 0;
  background: var(--paper-warm);
  color: var(--ink-soft);
  font-family: var(--font-reading);
  font-size: 11px;
  line-height: 1.7;
}

.card-explanation {
  margin: 9px 0 0;
  color: var(--ink-soft);
  font-size: 10px;
  line-height: 1.65;
}

.card-action-copy {
  margin-top: 11px;
  padding: 10px 11px;
  border-radius: 10px;
  background: var(--green-soft);
}

.card-action-copy span {
  color: var(--green);
  font-size: 9px;
  font-weight: 700;
}

.card-action-copy p {
  margin: 4px 0 0;
  color: var(--green-dark);
  font-size: 10px;
  line-height: 1.65;
}

.card-buttons {
  display: flex;
  gap: 7px;
  margin-top: 12px;
}

.primary-action,
.secondary-action {
  flex: 1;
  min-height: 34px;
  padding: 0 10px;
  border-radius: 8px;
  font-size: 10px;
}

.primary-action {
  border: 1px solid var(--green);
  background: var(--green);
  color: #fff;
}

.primary-action:hover {
  background: var(--green-dark);
}

.secondary-action {
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--ink-soft);
}

.secondary-action:hover {
  background: var(--paper-warm);
}

.card-resolved {
  margin: 12px 0 0;
  color: var(--green);
  font-size: 10px;
  line-height: 1.55;
}

.assistant-foot {
  margin: 15px 2px 0;
  color: var(--muted);
  font-size: 9px;
  line-height: 1.6;
}

/* ---------- 反馈版本 ---------- */

.drawer-scrim {
  position: fixed;
  inset: 0;
  z-index: 60;
  background: rgba(27, 38, 32, 0.28);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.drawer-scrim.is-open {
  opacity: 1;
  pointer-events: auto;
}

.version-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 70;
  width: min(480px, 94vw);
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--line);
  background: var(--paper);
  box-shadow: -22px 0 60px rgba(31, 50, 43, 0.16);
  transform: translateX(102%);
  transition: transform 0.24s ease;
}

.version-drawer.is-open {
  transform: translateX(0);
}

.drawer-head {
  flex: 0 0 auto;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 21px 20px 14px;
  border-bottom: 1px solid var(--line);
}

.drawer-head h2 {
  margin: 0;
  font-family: var(--font-reading);
  font-size: 19px;
  font-weight: 600;
}

.drawer-close {
  width: 34px;
  height: 34px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--paper);
  color: var(--muted);
  font-size: 20px;
  line-height: 1;
}

.drawer-body {
  flex: 1;
  min-height: 0;
  padding: 16px 18px 24px;
  overflow-y: auto;
}

.drawer-hint {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.65;
}

.version-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.version-item {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fffefb;
  text-align: left;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.version-item:hover {
  border-color: var(--green);
  transform: translateY(-1px);
}

.version-number {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--green-soft);
  color: var(--green-dark);
  font-size: 10px;
  font-weight: 700;
}

.version-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.version-main strong {
  font-size: 11px;
  font-weight: 600;
}

.version-main small {
  color: var(--muted);
  font-size: 9px;
}

.version-chevron {
  color: var(--line-strong);
  font-size: 18px;
}

.drawer-empty {
  margin: 0;
  padding: 24px 10px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.7;
  text-align: center;
}

.back-button {
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--green);
  font-size: 10px;
}

.detail-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-top: 14px;
}

.detail-head h3 {
  margin: 0;
  font-size: 15px;
}

.detail-meta {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 9px;
}

.restore-button {
  flex: 0 0 auto;
  min-height: 34px;
  padding: 0 11px;
  border: 1px solid var(--green);
  border-radius: 8px;
  background: var(--green);
  color: #fff;
  font-size: 9px;
}

.restore-button:disabled {
  opacity: 0.55;
  cursor: wait;
}

.diff-caption {
  margin: 16px 0 6px;
  color: var(--muted);
  font-size: 9px;
  letter-spacing: 0.08em;
}

.diff-view {
  max-height: 46vh;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
}

.diff-line {
  display: flex;
  gap: 8px;
  padding: 2px 10px;
  color: var(--ink-soft);
  font-family: "Cascadia Code", Consolas, monospace;
  font-size: 10px;
  line-height: 1.7;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.diff-marker {
  flex: 0 0 12px;
  color: var(--muted);
  user-select: none;
}

.diff-line.is-add {
  background: #eaf4ed;
  color: #20533f;
}

.diff-line.is-remove {
  background: #fbece8;
  color: #87372c;
}

.diff-line.is-hunk {
  background: var(--paper-warm);
  color: var(--muted);
  font-style: italic;
}

/* ---------- 辅助层 ---------- */

.scrim {
  display: none;
}

.mobile-nav {
  display: none;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 22px;
  z-index: 80;
  padding: 9px 16px;
  border-radius: 999px;
  background: rgba(31, 50, 43, 0.94);
  color: #fff;
  font-size: 11px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 8px);
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

@media (max-width: 1199px) {
  .workspace {
    grid-template-columns: minmax(0, 1fr) 336px;
  }

  .context-panel {
    position: fixed;
    top: 74px;
    bottom: 14px;
    left: 14px;
    z-index: 45;
    width: 296px;
    transform: translateX(-112%);
    transition: transform 0.22s ease;
  }

  .workspace.is-context-open .context-panel {
    transform: translateX(0);
  }

  .context-toggle {
    display: grid;
  }

  .scrim {
    display: block;
    position: fixed;
    inset: 62px 0 0;
    z-index: 40;
    background: rgba(30, 40, 35, 0.24);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
  }

  .workspace.is-context-open .scrim {
    opacity: 1;
    pointer-events: auto;
  }
}

@media (max-width: 899px) {
  html,
  body {
    overflow-x: hidden;
  }

  .topbar {
    height: 56px;
    flex-basis: 56px;
    gap: 8px;
    padding: 0 12px;
  }

  .brand-copy small,
  .context-meta,
  .visibility-note,
  .context-toggle {
    display: none;
  }

  .context-strip {
    padding-left: 10px;
  }

  .context-title {
    font-size: 11px;
  }

  .workspace {
    display: block;
    width: 100%;
    max-width: 100%;
    padding: 10px 10px calc(74px + env(safe-area-inset-bottom));
  }

  .panel {
    display: none;
    width: 100%;
    height: calc(100dvh - 140px - env(safe-area-inset-bottom));
    border-radius: 15px;
  }

  body[data-view="context"] .context-panel,
  body[data-view="review"] .review-panel,
  body[data-view="assistant"] .assistant-panel {
    display: flex;
  }

  .context-panel {
    position: static;
    width: auto;
    transform: none;
    padding: 18px 16px;
  }

  .scrim {
    display: none;
  }

  .review-toolbar {
    flex-wrap: wrap;
    padding: 9px 16px;
  }

  .review-state {
    flex: 1 1 100px;
  }

  .toolbar-actions {
    flex: 1 1 180px;
  }

  .state-chip,
  .feedback-target {
    display: none;
  }

  .submission-preview {
    max-height: 29%;
    padding: 14px 18px 15px;
  }

  .submission-text {
    font-size: 12px;
    line-height: 1.7;
  }

  .attachment {
    margin-left: 0;
  }

  .feedback-heading {
    padding: 18px 19px 6px;
  }

  .feedback-title {
    font-size: 19px;
  }

  .feedback-editor {
    padding: 6px 19px 18px;
    font-size: 16px;
    line-height: 1.85;
  }

  .assistant-panel {
    padding: 18px 16px;
  }

  .primary-action,
  .secondary-action {
    min-height: 42px;
    font-size: 11px;
  }

  .mobile-nav {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 55;
    width: 100%;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    padding: 6px 8px calc(6px + env(safe-area-inset-bottom));
    border-top: 1px solid var(--line);
    background: rgba(255, 253, 248, 0.96);
    backdrop-filter: blur(14px);
  }

  .version-drawer {
    width: 100%;
    max-width: none;
    border-left: 0;
  }

  .drawer-head {
    padding-top: calc(18px + env(safe-area-inset-top));
  }

  .drawer-body {
    padding-bottom: calc(24px + env(safe-area-inset-bottom));
  }

  .diff-view {
    max-height: 42vh;
  }

  .mobile-tab {
    position: relative;
    min-width: 0;
    min-height: 48px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    border: 0;
    border-radius: 10px;
    background: transparent;
    color: var(--muted);
    font-size: 10px;
    touch-action: manipulation;
  }

  .mobile-tab.is-active {
    background: var(--green-soft);
    color: var(--green-dark);
  }

  .mobile-badge {
    position: absolute;
    top: 5px;
    left: calc(50% + 8px);
    min-width: 15px;
    height: 15px;
    padding: 0 4px;
    border-radius: 999px;
    background: var(--rust);
    color: #fff;
    font-size: 8px;
    line-height: 15px;
    text-align: center;
  }

  .toast {
    bottom: calc(78px + env(safe-area-inset-bottom));
  }
}

@media (max-width: 420px) {
  .brand-copy {
    display: none;
  }

  .teacher-avatar {
    width: 31px;
    height: 31px;
  }

  .toolbar-button {
    padding: 0 8px;
    font-size: 9px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---------- 混合提交、评分建议与诚信核验 ---------- */

.review-attachment-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
}

.review-attachment-list > span {
  color: var(--muted);
  font-size: 9px;
  font-weight: 600;
}

.review-attachment-list a {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 5px 7px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--paper);
  color: var(--green-dark);
  font-size: 9px;
  text-decoration: none;
}

.review-attachment-list small {
  color: var(--muted);
  font-size: 7px;
}

.integrity-declaration {
  display: flex;
  flex-wrap: wrap;
  gap: 5px 14px;
  margin-top: 10px;
  padding: 9px 10px;
  border-radius: 9px;
  background: var(--green-soft);
}

.integrity-declaration p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 9px;
  line-height: 1.55;
}

.review-guide {
  margin-top: 14px;
  padding: 11px 12px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--paper-warm);
}

.review-guide > span {
  color: var(--green);
  font-size: 9px;
  font-weight: 700;
}

.review-guide ol {
  margin: 7px 0 0;
  padding-left: 16px;
  color: var(--ink-soft);
  font-size: 9px;
  line-height: 1.7;
}

.score-suggestion-form {
  display: flex;
  flex-direction: column;
}

.score-input {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 10px;
  color: var(--muted);
  font-size: 9px;
}

.score-input input {
  width: 74px;
  padding: 6px 8px;
  border: 1px solid var(--line-strong);
  border-radius: 7px;
  background: #fffefb;
  color: var(--ink);
  font-size: 11px;
}

.score-submit-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-top: 10px;
  padding-top: 9px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 9px;
}

.score-submit-row button,
.integrity-create button,
.integrity-flag-card form button {
  min-height: 31px;
  padding: 0 10px;
  border: 1px solid var(--green);
  border-radius: 8px;
  background: var(--green);
  color: #fff;
  font-size: 9px;
}

.integrity-review {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.section-inline-head,
.integrity-flag-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.section-inline-head h2 {
  margin: 0;
  font-family: var(--font-reading);
  font-size: 17px;
}

.section-inline-head > span {
  color: var(--muted);
  font-size: 9px;
}

.integrity-caution {
  margin: 8px 0 11px;
  color: var(--muted);
  font-size: 9px;
  line-height: 1.65;
}

.integrity-flag-card {
  margin-top: 8px;
  padding: 10px;
  border: 1px solid #ead9ce;
  border-radius: 10px;
  background: #fffaf7;
}

.integrity-flag-head strong {
  font-size: 10px;
}

.flag-status {
  padding: 2px 6px;
  border-radius: 999px;
  background: var(--gold-soft);
  color: var(--gold);
  font-size: 8px;
}

.flag-status.status-confirmed {
  background: var(--rust-soft);
  color: var(--rust);
}

.flag-status.status-cleared {
  background: var(--green-soft);
  color: var(--green);
}

.integrity-flag-card p {
  margin: 6px 0 0;
  color: var(--ink-soft);
  font-size: 9px;
  line-height: 1.55;
}

.integrity-flag-card form {
  display: flex;
  gap: 6px;
  margin-top: 9px;
}

.integrity-flag-card form .secondary-action {
  border-color: var(--line-strong);
  background: transparent;
  color: var(--ink-soft);
}

.integrity-create {
  margin-top: 10px;
  padding: 9px 10px;
  border: 1px dashed var(--line-strong);
  border-radius: 10px;
}

.integrity-create summary {
  color: var(--green);
  font-size: 9px;
  cursor: pointer;
}

.integrity-create form {
  display: grid;
  gap: 8px;
  margin-top: 10px;
}

.integrity-create .field {
  gap: 4px;
}

.integrity-create .field > span {
  font-size: 8px;
}

.integrity-create input,
.integrity-create select,
.integrity-create textarea {
  width: 100%;
  padding: 7px 8px;
  border: 1px solid var(--line-strong);
  border-radius: 7px;
  background: #fffefb;
  color: var(--ink);
  font: inherit;
  font-size: 9px;
  resize: vertical;
}

@media (max-width: 899px) {
  .integrity-declaration {
    align-items: flex-start;
    flex-direction: column;
  }

  .score-submit-row {
    align-items: stretch;
    flex-direction: column;
  }
}