:root {
  --bg: #f6f7f4;
  --paper: #fff;
  --ink: #202e29;
  --muted: #6e7872;
  --line: #e3e8df;
  --green: #25684e;
  --mint: #edf4e9;
  --sand: #f7f0df;
  --radius: 16px;
}
.weekly-plan{margin-top:18px}.weekly-plan-grid{display:grid;grid-template-columns:62px 100px 150px minmax(220px,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line);font-size:12px}.weekly-plan-grid>div{padding:9px 10px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.weekly-plan-head{font-size:11px;font-weight:650;color:var(--muted);background:color-mix(in srgb,var(--accent) 6%,#fff)}.weekly-plan-grid strong{font-size:12px}
.task-source,.quiz-source{display:inline-block;margin-top:8px;color:var(--accent);font-size:12px;text-decoration:none}.task-source:hover,.quiz-source:hover{text-decoration:underline}.quiz-source{margin:5px 0 10px;font-weight:600}.task-solution,.quiz-solution{color:var(--accent);font-size:12px;margin-left:7px}.source-badge{display:inline-block;margin-left:8px;padding:2px 7px;border-radius:99px;font-size:10px;line-height:1.4;background:#eef4ef;color:var(--green);vertical-align:middle}.source-badge.generated_variant{background:#f7f0df;color:#876b2e}.quiz-submit{margin:10px 0 0}
.question-bank{margin-top:18px;padding:14px 16px}.question-bank summary{display:flex;align-items:center;justify-content:space-between;gap:12px;cursor:pointer}.question-bank .task-list{margin-top:14px}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font:
    14px/1.65 -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "PingFang SC",
    "Microsoft YaHei",
    sans-serif;
}
button,
input,
select,
textarea {
  font: inherit;
}
button,
a,
input,
select,
textarea {
  -webkit-tap-highlight-color: transparent;
}
button {
  cursor: pointer;
}
button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}
a {
  color: inherit;
  text-decoration: none;
}
a:hover {
  color: var(--green);
}
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid #87b9a2;
  outline-offset: 3px;
}
button {
  border: 0;
  background: none;
  color: inherit;
}
h1,
h2,
h3,
p {
  margin-top: 0;
}
h1 {
  font-size: 32px;
  line-height: 1.3;
  letter-spacing: -1px;
  margin-bottom: 12px;
}
h2 {
  font-size: 19px;
  letter-spacing: -0.3px;
  margin-bottom: 16px;
}
h3 {
  font-size: 15px;
  margin-bottom: 7px;
}
.muted,
.hint {
  color: var(--muted);
}
.hint {
  font-size: 12px;
}
.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: 244px;
  background: #fbfcfa;
  border-right: 1px solid var(--line);
  padding: 30px 22px 20px;
  display: flex;
  flex-direction: column;
}
.brand {
  display: flex;
  gap: 12px;
  align-items: center;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.4px;
}
.brand small {
  display: block;
  font-size: 8px;
  letter-spacing: 1.1px;
  color: var(--muted);
  margin-top: 2px;
}
.brand-mark {
  background: var(--green);
  color: #fff;
  border-radius: 11px;
  font: italic 30px Georgia;
  width: 43px;
  height: 43px;
  display: grid;
  place-items: center;
}
.semester-label {
  font-size: 10px;
  letter-spacing: 1.5px;
  color: #89938b;
  margin: 35px 10px 12px;
}
#nav {
  display: grid;
  gap: 5px;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 11px;
  width: 100%;
  text-align: left;
  padding: 11px 13px;
  border-radius: 9px;
  color: #68716b;
}
.nav-item.active {
  background: #e7efe4;
  color: #255c42;
  font-weight: 650;
}
.nav-item:hover,
.course-link:hover {
  background: #edf1e9;
}
.nav-icon {
  width: 22px;
  font-size: 17px;
}
.course-label {
  display: flex;
  justify-content: space-between;
  margin: 28px 10px 12px;
  font-size: 11px;
  color: var(--muted);
}
#course-count {
  font-size: 10px;
  background: #e9ede6;
  border-radius: 5px;
  padding: 0 6px;
}
.search-label input {
  width: 100%;
  border: 1px solid var(--line);
  background: white;
  border-radius: 8px;
  padding: 7px 10px;
  font-size: 12px;
  margin-bottom: 9px;
}
#courses {
  overflow-y: auto;
  flex: 1;
  min-height: 80px;
}
.course-link {
  display: flex;
  align-items: center;
  width: 100%;
  padding: 8px 10px;
  gap: 10px;
  text-align: left;
  border-radius: 7px;
  font-size: 12px;
  color: #626d65;
}
.course-link.active {
  background: #e7efe4;
  color: var(--green);
  font-weight: 650;
}
.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex: none;
  background: var(--course, #688970);
}
.sidebar-bottom {
  padding-top: 18px;
  margin-top: 15px;
  border-top: 1px solid var(--line);
  font-size: 10px;
  color: var(--muted);
}
.status-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #74a27a;
  margin-right: 6px;
}
.text-button {
  padding: 0;
  color: var(--green);
  font-size: 12px;
}
.sidebar-bottom .text-button {
  display: block;
  margin-top: 6px;
}
.workspace {
  margin-left: 244px;
}
.topbar {
  height: 72px;
  padding: 0 42px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
}
.topbar-right {
  display: flex;
  gap: 24px;
}
#main {
  max-width: 1280px;
  padding: 38px 42px 20px;
  margin: auto;
  outline: none;
}
.eyebrow {
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--green);
  font-weight: 650;
  margin-bottom: 10px;
}
.page-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  margin-bottom: 27px;
}
.page-heading p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}
.controls {
  display: flex;
  gap: 9px;
  align-items: center;
  flex-wrap: wrap;
}
.select,
select {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 8px 11px;
  color: var(--ink);
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  background: var(--green);
  color: white;
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 12px;
  font-weight: 600;
}
.button:hover {
  background: #1c533d;
  color: white;
}
.button.secondary {
  background: #fff;
  border: 1px solid var(--line);
  color: var(--ink);
}
.button.soft {
  background: #e8f0e3;
  color: var(--green);
}
.button.small {
  padding: 6px 11px;
}
.mode-label {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
}
.mode-label input {
  accent-color: var(--green);
  width: 16px;
  height: 16px;
}
.overview {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 15px;
  margin-bottom: 28px;
}
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 23px;
}
.summary-card {
  min-height: 152px;
}
.summary-card:first-child {
  background: #e9f0e4;
  border-color: #e0e8da;
}
.stat-label {
  color: var(--muted);
  font-size: 11px;
  display: flex;
  justify-content: space-between;
}
.stat-number {
  font-size: 31px;
  letter-spacing: -1px;
  font-weight: 600;
  margin: 11px 0 1px;
}
.stat-number small {
  font-size: 12px;
  letter-spacing: 0;
  font-weight: 400;
  color: var(--muted);
  margin-left: 5px;
}
.progress-track {
  height: 5px;
  border-radius: 5px;
  background: #d8e2d2;
  margin-top: 13px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: var(--green);
  border-radius: 5px;
}
.columns {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 22px;
}
.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}
.section-heading h2 {
  margin: 0;
}
.pill {
  font-size: 10px;
  padding: 3px 8px;
  border-radius: 20px;
  background: #eef2ea;
  color: #5f755c;
}
.task-list {
  display: grid;
  gap: 11px;
}
.task {
  display: flex;
  align-items: flex-start;
  gap: 13px;
  padding: 18px 19px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 12px;
}
.task.done {
  background: #f4f7f0;
}
.task.done .task-title {
  text-decoration: line-through;
  color: #7f8c7c;
}
.task-check {
  appearance: none;
  -webkit-appearance: none;
  border: 1.5px solid #c9d2c5;
  border-radius: 6px;
  width: 21px;
  height: 21px;
  flex: none;
  margin: 3px 0 0;
  cursor: pointer;
  display: grid;
  place-content: center;
}
.task-check:checked {
  background: var(--green);
  border-color: var(--green);
}
.task-check:checked:after {
  content: "✓";
  color: #fff;
  font-size: 13px;
}
.task-body {
  flex: 1;
  min-width: 0;
}
.task-meta {
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 10px;
  color: var(--muted);
  margin-bottom: 4px;
  flex-wrap: wrap;
}
.task-title {
  font-size: 14px;
  font-weight: 550;
}
.task details {
  margin-top: 7px;
  font-size: 12px;
  color: var(--muted);
}
.task summary {
  cursor: pointer;
  width: fit-content;
  color: #52715e;
}
.task details p {
  margin: 7px 0 0;
  white-space: pre-wrap;
}
.task-actions {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 10px;
}
.side-stack {
  display: flex;
  flex-direction: column;
  gap: 17px;
}
.note-card {
  background: var(--sand);
  border-color: #ece5d5;
}
.note-card p {
  font-size: 12px;
  color: #766d57;
  margin-bottom: 12px;
}
.note-card .eyebrow {
  color: #887953;
}
.mini-row {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 9px 0;
  border-bottom: 1px solid #e9ede5;
  font-size: 12px;
}
.mini-row:last-child {
  border-bottom: 0;
}
.mini-row span:last-child {
  color: var(--muted);
  white-space: nowrap;
}
.schedule-scroll{overflow-x:auto}.schedule-grid{display:grid;grid-template-columns:72px repeat(7,minmax(120px,1fr));min-width:920px;border-top:1px solid var(--line);border-left:1px solid var(--line)}.schedule-corner,.schedule-day,.schedule-time,.schedule-cell{border-right:1px solid var(--line);border-bottom:1px solid var(--line);min-height:42px}.schedule-day{padding:10px 8px;text-align:center;font-size:12px;font-weight:650;background:color-mix(in srgb,var(--accent) 6%,#fff)}.schedule-time{padding:8px 6px;color:var(--muted);font-size:11px;text-align:center}.schedule-cell{display:grid;align-content:start;gap:4px;padding:4px;background:#fff}.schedule-event{min-height:32px;padding:6px 7px;border-left:3px solid var(--accent);border-radius:6px;background:color-mix(in srgb,var(--accent) 11%,#fff)}.schedule-event.plan{border-left-color:#447151;background:#edf5ed}.schedule-event.teaching{border-left-color:#7a315c;background:#f7edf4}.schedule-event strong,.schedule-event small{display:block}.schedule-event strong{font-size:11px;line-height:1.35}.schedule-event small{margin-top:3px;color:var(--muted);font-size:10px;line-height:1.35}.schedule-legend{display:flex;flex-wrap:wrap;gap:8px;margin:-5px 0 12px}.schedule-legend span{font-size:11px;color:var(--muted)}.schedule-legend span:before{content:"";display:inline-block;width:8px;height:8px;margin-right:5px;border-radius:50%;background:var(--accent)}.schedule-legend span:nth-child(2):before{background:#447151}.schedule-legend span:nth-child(3):before{background:#7a315c}
.workflow {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: step;
}
.workflow li {
  counter-increment: step;
  display: flex;
  gap: 11px;
  padding: 10px 0;
  font-size: 12px;
}
.workflow li:before {
  content: counter(step);
  display: grid;
  place-items: center;
  width: 23px;
  height: 23px;
  background: #edf3e8;
  color: var(--green);
  border-radius: 50%;
  flex: none;
  font-size: 10px;
}
.workflow small {
  display: block;
  color: var(--muted);
  margin-top: 2px;
}
footer {
  padding: 24px 42px 28px;
  font-size: 11px;
  color: #85907f;
  display: flex;
  justify-content: space-between;
  gap: 20px;
}
.tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 23px;
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
}
.tab {
  padding: 10px 15px;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  color: var(--muted);
  font-size: 13px;
}
.tab.active {
  color: var(--green);
  border-color: var(--green);
  font-weight: 600;
}
.course-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.course-card {
  display: flex;
  flex-direction: column;
  text-align: left;
  min-height: 178px;
}
.course-card:hover {
  border-color: #a9bea0;
  transform: translateY(-2px);
}
.course-code {
  color: var(--course, var(--green));
  font-size: 11px;
  letter-spacing: 1px;
  font-weight: 700;
  margin-bottom: 18px;
}
.course-card h2 {
  font-size: 17px;
  margin-bottom: 7px;
}
.course-card p {
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 0;
}
.course-card .hint {
  margin-top: auto;
  padding-top: 17px;
}
.empty {
  padding: 28px;
  background: #f0f4eb;
  border: 1px dashed #cddbc5;
  border-radius: 12px;
  color: #66745f;
}
.empty p {
  margin-bottom: 0;
  font-size: 12px;
}
.resource {
  display: block;
  margin-bottom: 13px;
}
.resource:hover {
  border-color: #a6b89c;
}
.resource p {
  font-size: 12px;
  margin: 7px 0 0;
  color: var(--muted);
}
.resource .hint {
  display: block;
  margin-top: 9px;
  overflow-wrap: anywhere;
}
.field {
  display: grid;
  gap: 7px;
  font-size: 12px;
  margin-bottom: 17px;
}
.field input,
.field textarea {
  width: 100%;
  border: 1px solid #d8e0d3;
  border-radius: 8px;
  background: white;
  padding: 10px 12px;
  color: var(--ink);
}
textarea {
  resize: vertical;
  min-height: 115px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}
.quiz-card {
  margin-bottom: 16px;
}
.quiz-card h3 {
  font-size: 16px;
  line-height: 1.7;
}
.answer {
  background: #f1f6ed;
  border-radius: 10px;
  padding: 16px;
  margin: 15px 0;
  white-space: pre-wrap;
  font-size: 13px;
}
.answer p {
  margin-bottom: 8px;
}
.quiz-note {
  margin-top: 13px;
  font-size: 11px;
  color: var(--muted);
}
.note-entry {
  margin: 12px 0;
}
.note-entry pre {
  white-space: pre-wrap;
  font: inherit;
  font-size: 13px;
  margin: 10px 0;
}
.note-entry small {
  color: var(--muted);
}
.practice-output {
  border-left: 3px solid #7fa778;
  padding-left: 12px;
  margin: 12px 0;
}
.notice {
  background: #f0f4eb;
  border-radius: 9px;
  padding: 12px 15px;
  font-size: 12px;
  color: #62735b;
  margin-bottom: 20px;
}
.backup-area {
  font:
    11px/1.5 ui-monospace,
    monospace !important;
  min-height: 130px;
}
.danger {
  color: #a6573f;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: fixed;
  top: -50px;
  left: 260px;
  padding: 10px;
  background: white;
  z-index: 100;
}
.skip-link:focus {
  top: 10px;
}
#toast {
  position: fixed;
  bottom: 25px;
  left: calc(50% + 100px);
  transform: translateX(-50%);
  background: #243e2e;
  color: white;
  box-shadow: 0 5px 25px #0002;
  border-radius: 10px;
  padding: 12px 22px;
  font-size: 12px;
  z-index: 20;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s;
}
#toast.show {
  opacity: 1;
}
@media (min-width: 1600px) {
  #main {
    padding-top: 48px;
  }
  .columns {
    grid-template-columns: minmax(0, 1fr) 330px;
  }
}
@media (max-width: 1100px) {
  .sidebar {
    width: 210px;
    padding: 24px 15px;
  }
  .workspace {
    margin-left: 210px;
  }
  #main {
    padding: 30px 25px;
  }
  .topbar {
    padding: 0 25px;
  }
  .columns {
    grid-template-columns: minmax(0, 1fr) 260px;
    gap: 16px;
  }
  .card {
    padding: 19px;
  }
  .course-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .overview {
    grid-template-columns: 1.2fr 1fr 1fr;
  }
  .page-heading {
    align-items: flex-start;
  }
  h1 {
    font-size: 29px;
  }
  .controls {
    justify-content: flex-end;
  }
  footer {
    padding: 25px;
  }
}
@media (max-width: 850px) {
  .columns {
    grid-template-columns: 1fr;
  }
  .side-stack {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
  .side-stack .card:last-child {
    grid-column: 1/-1;
  }
  .overview {
    gap: 10px;
  }
  .stat-number {
    font-size: 27px;
  }
  .summary-card {
    padding: 17px;
    min-height: 138px;
  }
}
@media (max-width: 650px) {
  .sidebar {
    position: static;
    width: auto;
    padding: 18px 18px 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .brand {
    font-size: 11px;
  }
  .brand-mark {
    width: 34px;
    height: 34px;
    font-size: 24px;
  }
  .semester-label,
  .course-label,
  .search-label,
  #courses,
  .sidebar-bottom {
    display: none;
  }
  #nav {
    display: flex;
    justify-content: space-between;
    margin-top: 17px;
    gap: 1px;
  }
  .nav-item {
    font-size: 12px;
    padding: 10px 8px;
    border-radius: 7px 7px 0 0;
    gap: 5px;
  }
  .nav-icon {
    font-size: 14px;
    width: 16px;
  }
  .workspace {
    margin-left: 0;
  }
  .topbar {
    height: 43px;
    padding: 0 18px;
    font-size: 10px;
  }
  .topbar-right {
    gap: 12px;
  }
  #main {
    padding: 25px 18px;
  }
  .page-heading {
    display: block;
    margin-bottom: 22px;
  }
  .page-heading .controls {
    justify-content: flex-start;
    margin-top: 17px;
  }
  h1 {
    font-size: 28px;
  }
  .page-heading p {
    font-size: 12px;
  }
  .overview {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }
  .overview .summary-card:first-child {
    grid-column: 1/-1;
    min-height: 126px;
  }
  .summary-card {
    min-height: 129px;
  }
  .stat-label {
    font-size: 10px;
  }
  .columns {
    gap: 22px;
  }
  .side-stack {
    grid-template-columns: 1fr;
  }
  .side-stack .card:last-child {
    grid-column: auto;
  }
  .task {
    padding: 15px 13px;
    gap: 11px;
  }
  .task-title {
    font-size: 13px;
  }
  .task-actions {
    flex-wrap: wrap;
  }
  .course-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }
  .course-card {
    padding: 16px;
    min-height: 178px;
  }
  .course-card h2 {
    font-size: 15px;
  }
  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
  footer {
    display: block;
    padding: 20px 18px;
  }
  footer span {
    display: block;
    margin-top: 6px;
  }
  .tabs {
    gap: 0;
  }
  .tab {
    padding: 10px 12px;
  }
  #toast {
    left: 50%;
    width: max-content;
    max-width: 90vw;
  }
  .skip-link {
    left: 15px;
  }
}