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    .login-screen{min-height:100vh;display:grid;grid-template-columns:1.15fr .85fr;background:white}.login-visual{background:linear-gradient(135deg,#102c64,#2867e8 65%,#51a0f4);padding:70px;color:white;position:relative;overflow:hidden;display:flex;align-items:center}.login-visual:before,.login-visual:after{content:"";position:absolute;border:1px solid #ffffff26;border-radius:50%}.login-visual:before{width:560px;height:560px;right:-190px;top:-160px}.login-visual:after{width:380px;height:380px;left:-160px;bottom:-180px}.login-copy{max-width:600px;position:relative;z-index:1}.login-copy .learner-logo{background:#ffffff24;border:1px solid #ffffff50}.login-copy h1{font-size:42px;margin:28px 0 15px}.login-copy p{font-size:17px;color:#d9e8ff}.login-features{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:50px}.login-feature{padding:16px;background:#ffffff12;border:1px solid #ffffff20;border-radius:12px}.login-feature b{display:block;margin-bottom:5px}.login-panel{display:grid;place-items:center;padding:35px;background:#f9fbff}.login-box{width:420px;max-width:100%;background:white;border:1px solid var(--line);border-radius:16px;padding:34px;box-shadow:0 16px 45px #20345b14}.login-box h2{font-size:25px;margin:0 0 5px}.account-list{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:22px 0}.account{border:1px solid var(--line);background:white;border-radius:9px;padding:11px 6px;cursor:pointer;text-align:center;color:var(--muted)}.account b{display:block;color:var(--text);margin-bottom:2px}.account.selected{border-color:var(--blue);background:var(--blue2);color:var(--blue)}.login-box .field{margin:14px 0}.login-box .field input{width:100%;padding:11px}.login-box .btn-block{width:100%;padding:12px;margin-top:8px}.auth-user{display:flex;align-items:center;gap:12px}.auth-user .avatar{width:32px;height:32px}.text-btn{border:0;background:transparent;color:var(--muted);cursor:pointer}.teacher-mode #adminNav [data-go="dashboard"],.teacher-mode #adminNav [data-go="tasks"],.teacher-mode #adminNav [data-go="progressPage"],.teacher-mode #adminNav [data-go="accounts"]{display:none}.teacher-mode #adminNav small:last-of-type{display:none}.resource-area{margin-top:18px}.upload-zone{border:1.5px dashed #b9cae4;border-radius:10px;background:#f8fbff;padding:17px;text-align:center;color:var(--muted);transition:.2s}.upload-zone.drag{border-color:var(--blue);background:var(--blue2)}.upload-zone b{color:var(--text)}.upload-zone p{margin:5px 0 11px;font-size:12px}.vod-row{display:flex;gap:8px;margin-top:10px}.vod-row input{flex:1}.resource-list{margin-top:13px;border:1px solid var(--line);border-radius:9px;overflow:hidden}.resource-row{display:grid;grid-template-columns:38px 1fr auto;gap:10px;align-items:center;padding:11px 12px;border-bottom:1px solid var(--line)}.resource-row:last-child{border:0}.file-icon{width:34px;height:34px;border-radius:7px;display:grid;place-items:center;background:var(--blue2);color:var(--blue);font-size:11px;font-weight:700}.file-icon.video{background:#f0e8ff;color:#7947b0}.file-icon.audio{background:#e5f7f1;color:#188467}.resource-name{font-weight:500}.resource-meta{font-size:12px;color:var(--muted)}.resource-actions{display:flex;align-items:center;gap:6px}.upload-progress{height:4px;background:#edf0f4;border-radius:5px;margin-top:5px;overflow:hidden}.upload-progress i{display:block;height:100%;background:var(--blue);transition:width .25s}.resource-empty{text-align:center;padding:18px;color:var(--muted)}
    .tabs{display:flex;gap:25px;border-bottom:1px solid var(--line);margin-bottom:18px}.tab{border:0;background:transparent;padding:11px 3px;color:var(--muted);cursor:pointer;position:relative}.tab.active{color:var(--blue);font-weight:500}.tab.active:after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:3px;background:var(--blue);border-radius:3px}.account-panel{display:none}.account-panel.active{display:block}.role-chip{display:inline-block;padding:3px 8px;margin:2px;border-radius:12px;background:var(--blue2);color:var(--blue);font-size:12px}.role-chip.admin{background:#f0e8ff;color:#764ab0}.role-chip.teacher{background:#e4f7ef;color:#168264}.perm-list{display:flex;gap:6px;flex-wrap:wrap}.perm-list span{padding:3px 7px;border-radius:5px;background:#f1f3f6;color:#617087;font-size:12px}.checkbox-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.check-option{border:1px solid var(--line);border-radius:8px;padding:11px;display:flex;align-items:flex-start;gap:8px}.check-option input{margin-top:3px}.source-mdm{color:var(--blue)}.source-local{color:var(--orange)}.chapter-item{align-items:center;justify-content:space-between;padding:13px 14px}.chapter-item.selected{border-color:var(--blue);background:var(--blue2);box-shadow:0 0 0 1px #2867e814}.chapter-main{flex:1;min-width:0}.chapter-headline{display:flex;align-items:center;gap:8px;margin-bottom:3px}.chapter-state{display:none;padding:2px 7px;border-radius:10px;background:var(--blue);color:white;font-size:11px;font-weight:400}.chapter-item.selected .chapter-state{display:inline-block}.chapter-actions{display:flex;gap:4px;flex:none}.chapter-title-input{width:100%;padding:8px 10px;margin:5px 0}.chapter-edit-label{display:block;color:var(--muted);font-size:12px}.chapter-save{color:var(--green)}.person-search{position:relative}.person-search input{width:100%;padding:11px 13px}.person-results{margin-top:8px;border:1px solid var(--line);border-radius:9px;background:white;max-height:215px;overflow:auto}.person-result{display:grid;grid-template-columns:34px 1fr auto;gap:10px;align-items:center;padding:10px 12px;border-bottom:1px solid var(--line)}.person-result:last-child{border:0}.person-result .avatar{width:32px;height:32px}.person-empty{padding:22px;text-align:center;color:var(--muted)}.selected-box{margin-top:16px;padding:13px;background:#f7f9fc;border-radius:10px}.selected-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:9px}.selected-people{display:flex;flex-wrap:wrap;gap:8px}.person-chip{display:flex;align-items:center;gap:6px;padding:6px 8px 6px 10px;border-radius:16px;background:white;border:1px solid #dbe3ef}.person-chip button{border:0;background:transparent;color:#8a97a9;cursor:pointer;padding:0 2px}.person-chip button:hover{color:var(--red)}
    .side{background:#fff;color:#536176;border-right:1px solid #e8ecf2;box-shadow:none}.brand{color:#18243a;border-bottom:1px solid #edf0f4}.brand .logo{box-shadow:none}.side small{color:#99a4b3}.side small:after{background:#edf0f4}.nav{color:#5d6a7d}.nav span{background:#f2f5f9;color:#738197}.nav:hover{background:#f5f7fa;color:#26364f}.nav.active{background:#eaf2ff;color:#2464dd;box-shadow:none}.nav.active:before{background:#2867e8}.nav.active span{background:#d9e8ff;color:#2867e8}.side-user{background:#f7f9fc;border-color:#e7ebf1;color:#35445a}.side-user:before{box-shadow:0 0 0 3px #39c98c1f}
    @media(max-width:1100px){.learner-links{display:none}.portal-grid{grid-template-columns:repeat(2,1fr)}.portal-search input{width:140px}.login-screen{grid-template-columns:1fr}.login-visual{display:none}}
    @media(max-width:1000px){.metrics{grid-template-columns:repeat(2,1fr)}.course-grid{grid-template-columns:repeat(2,1fr)}.grid2,.learning-layout{grid-template-columns:1fr}.portal-hero{grid-template-columns:1fr}.hero-decoration{display:none}}
    @media(max-width:700px){.side{transform:translateX(-100%);transition:.2s}.side.open{transform:none}.main{margin:0;width:100%}.mobile-menu{display:inline-block}.top{padding:0 14px}.content{padding:18px 14px}.metrics,.course-grid,.form-grid,.portal-grid{grid-template-columns:1fr}.head{flex-direction:column}.top .sub{display:none}.student-mode .top{padding:0 14px}.learner-brand div:last-child,.portal-search select,.learner-actions .text-btn{display:none}.portal-search input{width:120px}.learner-top{gap:8px}.hero-banner{padding:28px;min-height:260px}.hero-banner h1{font-size:27px}.continue-row{grid-template-columns:80px 1fr}.continue-row>.btn{grid-column:1/-1}.quick-rail{display:none!important}.login-panel{padding:18px}.login-box{padding:25px 20px}.account-list{grid-template-columns:1fr}.account{display:flex;justify-content:space-between;text-align:left;padding:10px 13px}}

:focus-visible {
  outline: 3px solid rgba(40, 103, 232, 0.35);
  outline-offset: 2px;
}

.field-help {
  margin-top: 6px;
  color: var(--muted);
  font-size: 12px;
}

#courseCategoryHelp,
#courseModal .dialog-body > .notice + h3 + .sub {
  display: none;
}

.category-picker {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
}

.category-picker #courseEditCategory {
  grid-column: 1 / -1;
  width: 100%;
}

.category-picker #courseCustomCategory {
  grid-column: 1;
  min-width: 0;
  width: 100%;
}

.category-picker #toggleCustomCategory {
  grid-column: 2;
  min-width: 64px;
  border-color: var(--blue);
  background: var(--blue);
  color: white;
}

.category-picker [hidden] {
  display: none !important;
}

.course-name-preview {
  max-width: 280px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.category-combobox {
  position: relative;
  width: 190px;
}

.category-combobox input {
  width: 100%;
  padding-right: 38px;
  cursor: text;
}

.category-combobox-toggle {
  position: absolute;
  top: 1px;
  right: 1px;
  width: 36px;
  height: calc(100% - 2px);
  padding: 0;
  border: 0;
  border-radius: 0 7px 7px 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 18px;
  transition: color .18s, transform .18s;
}

.category-combobox:hover input,
.category-combobox.open input {
  border-color: #b8c5d8;
}

.category-combobox.open input {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px #eaf1ff;
}

.category-combobox.open .category-combobox-toggle {
  color: var(--blue);
  transform: rotate(180deg);
}

.category-options {
  position: absolute;
  z-index: 15;
  top: calc(100% + 7px);
  left: 0;
  width: 250px;
  max-height: 280px;
  padding: 7px;
  overflow-y: auto;
  border: 1px solid #dfe5ee;
  border-radius: 11px;
  background: #fff;
  box-shadow: 0 14px 34px rgba(25, 42, 70, .16);
}

.category-option {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 11px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  text-align: left;
}

.category-option:hover,
.category-option.active {
  background: #f3f6fa;
}

.category-option[aria-selected="true"] {
  background: var(--blue2);
  color: var(--blue);
  font-weight: 600;
}

.category-option-check {
  visibility: hidden;
  color: var(--blue);
}

.category-option[aria-selected="true"] .category-option-check {
  visibility: visible;
}

.category-options-empty {
  padding: 22px 12px;
  color: var(--muted);
  text-align: center;
}

.person-course-progress {
  display: flex;
  min-width: 145px;
  align-items: center;
  gap: 8px;
}

.person-course-progress .progress {
  flex: 1;
}

.person-progress-table table {
  min-width: 1080px;
}

.task-progress-dialog {
  width: min(1180px, calc(100vw - 40px));
}

.task-progress-dialog-head {
  align-items: flex-start;
}

.task-progress-dialog-head p {
  margin: 6px 0 0;
}

.task-progress-head-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.task-progress-dialog .dialog-body {
  background: #f7f9fc;
}

.task-progress-dialog #taskProgressMetrics .card {
  padding: 15px 17px;
}

.task-progress-dialog #taskProgressMetrics strong {
  font-size: 24px;
}

.task-progress-table {
  max-height: 46vh;
}

.task-progress-table table {
  min-width: 1040px;
}

.task-progress-table thead {
  position: sticky;
  z-index: 1;
  top: 0;
}

#personProgressMetrics {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.person-summary-row > td {
  vertical-align: middle;
}

.person-status-summary {
  display: flex;
  min-width: 130px;
  flex-wrap: wrap;
  gap: 5px;
}

.person-overall-progress {
  display: grid;
  grid-template-columns: minmax(90px, 1fr) 40px;
  gap: 9px;
  align-items: center;
  min-width: 145px;
}

.person-overall-progress b,
.person-course-progress b {
  color: var(--text);
  font-size: 12px;
  text-align: right;
}

.person-courses-dialog {
  width: 980px;
}

.person-courses-dialog .dialog-head {
  align-items: flex-start;
}

.person-courses-dialog .dialog-head p {
  margin: 6px 0 0;
}

.person-course-filterbar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.person-course-filters {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.person-course-filters label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 12px;
}

.person-course-filters select {
  min-width: 150px;
  color: var(--text);
}

.person-course-list {
  display: grid;
  gap: 10px;
}

.person-course-list-item {
  display: grid;
  grid-template-columns: minmax(220px, 1.5fr) 100px minmax(130px, .8fr) 120px 72px;
  gap: 18px;
  align-items: center;
  padding: 15px 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
}

.person-course-identity {
  min-width: 0;
}

.person-course-identity h3 {
  margin: 7px 0 4px;
  overflow: hidden;
  font-size: 14px;
  line-height: 1.45;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.person-course-identity p {
  margin: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.person-course-deadline small {
  display: block;
  margin-bottom: 4px;
  color: var(--muted);
}

.person-course-deadline b {
  font-size: 12px;
}

.person-course-activity {
  display: grid;
  gap: 4px;
  color: var(--muted);
  font-size: 12px;
}

.person-course-state {
  text-align: right;
}

@media (max-width: 1200px) {
  #personProgressMetrics {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 1000px) {
  #personProgressMetrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 700px) {
  #personProgressMetrics {
    grid-template-columns: 1fr;
  }

  .category-combobox,
  .category-options {
    width: 100%;
  }

  .task-progress-dialog {
    width: 100%;
  }

  .task-progress-dialog-head,
  .task-progress-head-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .person-progress-toolbar,
  .task-progress-toolbar {
    display: grid;
    grid-template-columns: 1fr;
  }

  .person-progress-toolbar > *,
  .task-progress-toolbar > * {
    width: 100%;
  }

  .person-course-filterbar,
  .person-course-filters {
    align-items: stretch;
    flex-direction: column;
  }

  .person-course-filters select {
    width: 100%;
  }

  .person-course-list-item {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .person-course-state {
    text-align: left;
  }
}

.real-learning-player { min-height: calc(100vh - 185px); }
.real-learning-player video,
.real-learning-player iframe { width: 100%; height: min(72vh, 760px); min-height: 420px; border: 0; border-radius: 10px; background: #0d1727; margin: 12px 0; object-fit: contain; }
.real-learning-player .viewer-content { width: 100%; }
.lesson-progress { width: 100%; min-width: 0; height: 5px; margin-top: 6px; }
#taskCourseSelect[multiple] { min-height: 210px; padding: 6px; }
#taskCourseSelect[multiple] option { padding: 10px 12px; margin: 2px 0; border-radius: 7px; }

@media (max-width: 1000px) {
  .real-learning-player { min-height: 0; }
  .real-learning-player video,
  .real-learning-player iframe { height: min(68vh, 620px); min-height: 300px; }
}
.document-reader-dialog { width: 760px; }
.document-reader { max-height: 65vh; overflow: auto; color: #27364d; line-height: 1.8; }
.document-reader article { max-width: 680px; margin: auto; }
.document-reader h3 { margin: 20px 0 8px; }
.document-reader p { margin: 6px 0; }
.document-reader-status { position: sticky; bottom: 0; display: flex; justify-content: space-between; gap: 12px; padding: 12px; margin-top: 20px; border: 1px solid var(--line); border-radius: 9px; background: #ffffffee; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

/* Red brand theme and fluid desktop layout */
:root {
  --primary: #c61f2f;
  --primary-dark: #9f1724;
  --primary-bright: #e33a48;
  --primary-soft: #fff0f2;
  --primary-ring: rgba(198, 31, 47, 0.2);
  --blue: var(--primary);
  --blue2: var(--primary-soft);
  --red: #d9363e;
  --sidebar-width: clamp(220px, 14vw, 246px);
}

.side {
  width: var(--sidebar-width);
}

.main {
  width: calc(100% - var(--sidebar-width));
  margin-left: var(--sidebar-width);
}

.content,
.student-mode .content {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: clamp(20px, 1.8vw, 36px);
}

.brand .logo,
.learner-logo {
  background: linear-gradient(145deg, var(--primary-bright), var(--primary-dark));
  color: #fff;
}

.avatar {
  background: #ffe2e6;
  color: var(--primary-dark);
}

.nav.active {
  background: var(--primary-soft);
  color: var(--primary-dark);
}

.nav.active::before {
  background: var(--primary);
}

.nav.active span {
  background: #ffdce1;
  color: var(--primary);
}

.btn:hover {
  border-color: #df8790;
}

.search:focus,
input:focus,
select:focus {
  box-shadow: 0 0 0 3px var(--primary-ring);
}

:focus-visible {
  outline-color: rgba(198, 31, 47, 0.38);
}

.login-screen {
  grid-template-columns: minmax(0, 1.16fr) minmax(500px, 0.84fr);
  min-height: 100svh;
  background: #f4f5f7;
}

.login-visual {
  isolation: isolate;
  padding: clamp(48px, 6vw, 112px);
  color: #fff;
  background:
    radial-gradient(circle at 16% 8%, rgba(76, 102, 145, 0.24), transparent 32%),
    radial-gradient(circle at 86% 90%, rgba(190, 27, 43, 0.2), transparent 30%),
    linear-gradient(145deg, #172236 0%, #0c1524 58%, #080e18 100%);
}

.login-visual::before {
  inset: 0;
  width: auto;
  height: auto;
  border: 0;
  border-radius: 0;
  opacity: 0.22;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.055) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(105deg, #000, transparent 78%);
}

.login-visual::after {
  right: -82px;
  bottom: -235px;
  left: auto;
  width: 250px;
  height: 630px;
  border: 0;
  border-radius: 42px;
  background: linear-gradient(180deg, rgba(205, 31, 47, 0.92), rgba(125, 12, 25, 0.32));
  box-shadow: 0 0 90px rgba(198, 31, 47, 0.18);
  transform: rotate(27deg);
}

.login-copy {
  width: min(690px, 100%);
  max-width: none;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
}

.login-copy .learner-logo {
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: linear-gradient(145deg, #e84250, #a71423);
  box-shadow: 0 10px 30px rgba(175, 17, 32, 0.28);
}

.login-brand {
  color: #fff;
}

.login-brand-en {
  margin-top: 1px;
  color: #8390a4;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.8px;
}

.login-eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: clamp(64px, 10vh, 112px);
  color: #d6dce6;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2.6px;
  text-transform: uppercase;
}

.login-eyebrow span {
  width: 34px;
  height: 2px;
  background: var(--primary-bright);
}

.login-copy h1 {
  max-width: 690px;
  margin: 22px 0 20px;
  color: #fff;
  font-size: clamp(44px, 4vw, 68px);
  font-weight: 700;
  line-height: 1.13;
  letter-spacing: -0.045em;
}

.login-copy p {
  max-width: 610px;
  margin: 0;
  color: #aab5c6;
  font-size: 16px;
  line-height: 1.9;
}

.login-highlights {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  width: min(620px, 100%);
  margin-top: clamp(42px, 7vh, 72px);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.login-highlights div {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: 18px 20px 18px 0;
}

.login-highlights div + div {
  padding-left: 22px;
  border-left: 1px solid rgba(255, 255, 255, 0.1);
}

.login-highlights strong {
  color: #ef5361;
  font-size: 11px;
  letter-spacing: 1.5px;
}

.login-highlights span {
  color: #eef1f5;
  font-size: 13px;
}

.login-monogram {
  position: absolute;
  right: -24px;
  bottom: -84px;
  z-index: -1;
  color: rgba(255, 255, 255, 0.028);
  font-size: clamp(180px, 23vw, 430px);
  font-weight: 800;
  letter-spacing: -0.09em;
  line-height: 1;
  pointer-events: none;
}

.login-visual-footer {
  position: absolute;
  bottom: 28px;
  left: clamp(48px, 6vw, 112px);
  z-index: 1;
  color: #616e82;
  font-size: 10px;
  letter-spacing: 1.6px;
}

.login-panel {
  position: relative;
  padding: clamp(28px, 4vw, 72px);
  background:
    radial-gradient(circle at 100% 0, rgba(198, 31, 47, 0.055), transparent 25%),
    #f4f5f7;
}

.login-panel::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  width: 4px;
  height: 88px;
  border-radius: 0 4px 4px 0;
  background: var(--primary);
  transform: translateY(-50%);
}

.login-box {
  position: relative;
  width: 468px;
  padding: 36px 40px 32px;
  overflow: hidden;
  border: 1px solid #e5e7eb;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 24px 70px rgba(23, 31, 48, 0.1);
}

.login-box::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), #e95b68 45%, transparent 80%);
}

.login-box-brand {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.login-box-brand .learner-brand {
  color: #162238;
  font-size: 17px;
}

.login-box-brand .learner-logo {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  font-size: 17px;
}

.demo-badge {
  padding: 5px 9px;
  border: 1px solid #edd4d8;
  border-radius: 999px;
  color: #a42834;
  background: #fff7f8;
  font-size: 11px;
}

.login-heading {
  margin: 28px 0 22px;
}

.login-box h2 {
  margin: 0 0 5px;
  color: #111b2e;
  font-size: 30px;
  line-height: 1.3;
  letter-spacing: -0.03em;
}

.login-heading p {
  margin: 0;
}

.login-section-label {
  margin-bottom: 9px;
  color: #7a8495;
  font-size: 12px;
  font-weight: 600;
}

.account-list {
  gap: 8px;
  margin: 0 0 22px;
}

.account {
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 96px;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-start;
  padding: 12px;
  border-color: #e5e7eb;
  border-radius: 11px;
  color: #798394;
  background: #fff;
  text-align: left;
  transition: border-color 0.18s, background 0.18s, box-shadow 0.18s, transform 0.18s;
}

.account:hover {
  border-color: #d7a2a8;
  transform: translateY(-1px);
}

.account-avatar {
  display: grid;
  width: 28px;
  height: 28px;
  margin-bottom: 8px;
  place-items: center;
  border-radius: 8px;
  color: #5d6879;
  background: #f0f2f5;
  font-size: 11px;
  font-weight: 700;
}

.account-copy {
  display: block;
  min-width: 0;
}

.account b {
  margin: 0;
  overflow: hidden;
  color: #263145;
  font-size: 13px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.account small {
  display: block;
  margin-top: 1px;
  color: #8a94a3;
  font-size: 11px;
}

.account-mark {
  position: absolute;
  top: 11px;
  right: 10px;
  display: none;
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
}

.account.selected {
  border-color: #d55b67;
  color: var(--primary);
  background: #fff7f8;
  box-shadow: 0 0 0 1px rgba(198, 31, 47, 0.06);
}

.account.selected .account-avatar {
  color: #fff;
  background: var(--primary);
}

.account.selected .account-mark {
  display: block;
}

.login-fields .field {
  margin: 0 0 14px;
}

.login-fields .field label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 7px;
  color: #4e596b;
  font-size: 12px;
  font-weight: 600;
}

.login-fields .field label span {
  color: #99a1ae;
  font-weight: 400;
}

.login-box .field input {
  height: 46px;
  padding: 0 13px;
  border-color: #dfe3e8;
  border-radius: 10px;
  background: #fbfbfc;
}

.login-box .field input:hover {
  border-color: #cdd3db;
}

.login-box .btn-block {
  display: flex;
  width: 100%;
  height: 48px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 18px;
  border-radius: 10px;
  box-shadow: 0 10px 24px rgba(198, 31, 47, 0.18);
  font-weight: 600;
  transition: background 0.18s, box-shadow 0.18s, transform 0.18s;
}

.login-box .btn-block:hover {
  border-color: var(--primary-dark);
  background: var(--primary-dark);
  box-shadow: 0 12px 28px rgba(159, 23, 36, 0.24);
  transform: translateY(-1px);
}

.login-box .btn-block span {
  font-size: 18px;
  line-height: 1;
}

.login-note {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  margin: 16px 0 0;
  color: #939ba8;
  font-size: 11px;
}

.login-note span {
  display: grid;
  width: 16px;
  height: 16px;
  place-items: center;
  border: 1px solid #cdd2da;
  border-radius: 50%;
  font-family: Georgia, serif;
  font-size: 10px;
}

.mega-left b:first-child {
  background: var(--primary-soft);
}

.course-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

@media (max-width: 1200px) {
  .content,
  .student-mode .content {
    padding: 20px;
  }
}

@media (max-width: 1000px) {
  .content,
  .student-mode .content {
    padding: 18px;
  }
}

@media (max-width: 700px) {
  .main,
  .student-mode .main {
    width: 100%;
    margin-left: 0;
  }

  .content,
  .student-mode .content {
    padding: 18px 14px;
  }
}

@media (max-width: 1100px) {
  .login-screen {
    grid-template-columns: 1fr;
  }

  .login-panel {
    min-height: 100svh;
    padding: 32px;
  }

  .login-panel::before {
    display: none;
  }
}

@media (max-width: 700px) {
  .login-panel {
    padding: 18px;
  }

  .login-box {
    width: min(468px, 100%);
    padding: 28px 22px 24px;
    border-radius: 16px;
  }

  .login-heading {
    margin: 24px 0 20px;
  }

  .login-box h2 {
    font-size: 27px;
  }

  .login-box-brand .learner-brand div:last-child {
    display: block;
  }

  .account-list {
    grid-template-columns: 1fr;
  }

  .account {
    min-height: 62px;
    flex-direction: row;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
  }

  .account-avatar {
    margin: 0;
  }

  .account-mark {
    top: 50%;
    transform: translateY(-50%);
  }
}

@media (max-height: 760px) and (min-width: 1101px) {
  .login-box {
    padding: 28px 36px 24px;
  }

  .login-heading {
    margin: 20px 0 16px;
  }

  .account-list {
    margin-bottom: 16px;
  }

  .account {
    min-height: 88px;
    padding: 10px;
  }

  .account-avatar {
    margin-bottom: 5px;
  }

  .login-fields .field {
    margin-bottom: 10px;
  }

  .login-box .field input {
    height: 42px;
  }

  .login-box .btn-block {
    height: 44px;
    margin-top: 13px;
  }

  .login-note {
    margin-top: 12px;
  }
}

/* Minimal login */
.login-screen {
  display: block;
  min-height: 100svh;
  background: #f5f6f7;
}

.login-panel {
  display: flex;
  min-height: 100svh;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
  background: #f5f6f7;
}

.login-panel::before,
.login-box::before {
  content: none;
}

.login-box {
  width: 430px;
  max-width: 100%;
  padding: 38px;
  overflow: visible;
  border: 1px solid #e2e5e9;
  border-radius: 14px;
  background: #fff;
  box-shadow: none;
}

.login-box-brand {
  align-items: center;
}

.login-box-brand .learner-brand,
.login-brand {
  color: #172033;
  font-size: 16px;
}

.login-box-brand .learner-logo {
  width: 34px;
  height: 34px;
  border: 0;
  border-radius: 8px;
  background: var(--primary);
  box-shadow: none;
  font-size: 16px;
}

.login-brand-en {
  color: #939baa;
  font-size: 10px;
  letter-spacing: 0.6px;
}

.demo-badge {
  padding: 0;
  border: 0;
  color: #9aa1ad;
  background: transparent;
  font-size: 10px;
  letter-spacing: 1px;
}

.login-heading {
  margin: 30px 0 22px;
}

.login-heading h1 {
  margin: 0 0 5px;
  color: #151d2d;
  font-size: 26px;
  line-height: 1.35;
  letter-spacing: -0.02em;
}

.login-heading p {
  margin: 0;
  color: #7d8797;
  font-size: 13px;
}

.account-list {
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  margin: 0 0 24px;
  padding: 4px;
  border-radius: 10px;
  background: #f1f2f4;
}

.account {
  display: block;
  min-height: 58px;
  padding: 9px 5px;
  border: 1px solid transparent;
  border-radius: 7px;
  color: #7f8896;
  background: transparent;
  text-align: center;
  transform: none;
}

.account:hover {
  border-color: transparent;
  background: #e9ebee;
  transform: none;
}

.account b {
  margin: 0;
  color: #313a49;
  font-size: 12px;
  font-weight: 600;
}

.account small {
  margin-top: 2px;
  color: #929aa7;
  font-size: 10px;
}

.account.selected {
  border-color: #e1e3e7;
  color: var(--primary);
  background: #fff;
  box-shadow: 0 1px 3px rgba(26, 33, 45, 0.08);
}

.account.selected b {
  color: var(--primary-dark);
}

.login-fields .field {
  margin-bottom: 14px;
}

.login-fields .field label {
  margin-bottom: 6px;
  color: #4d5665;
  font-size: 12px;
  font-weight: 500;
}

.login-fields .field label span {
  color: #9ca3ad;
}

.login-box .field input {
  height: 44px;
  padding: 0 12px;
  border-color: #d9dde3;
  border-radius: 8px;
  background: #fff;
}

.login-box .field input:hover {
  border-color: #c8cdd5;
}

.login-box .btn-block {
  height: 44px;
  margin-top: 18px;
  border-radius: 8px;
  box-shadow: none;
  font-weight: 500;
}

.login-box .btn-block:hover {
  box-shadow: none;
  transform: none;
}

.login-note {
  display: block;
  margin: 14px 0 0;
  color: #989faa;
  font-size: 11px;
  text-align: center;
}

.login-footer {
  margin: 18px 0 0;
  color: #a2a8b1;
  font-size: 11px;
}

@media (max-width: 520px) {
  .login-panel {
    padding: 24px 16px;
  }

  .login-box {
    padding: 28px 20px;
  }

  .login-heading {
    margin: 26px 0 20px;
  }

  .account {
    min-height: 56px;
    padding: 8px 3px;
  }
}

/* Cohesive split composition */
@media (min-width: 1001px) {
  .login-screen {
    grid-template-columns: minmax(0, 1.05fr) minmax(500px, 0.95fr);
  }

  .split-brand-inner {
    width: min(560px, 100%);
    justify-content: center;
  }

  .split-copy {
    margin: 50px 0 0;
    padding: 0;
  }

  .split-meta {
    margin-top: 48px;
  }

  .split-form-panel {
    padding-right: clamp(48px, 7vw, 112px);
    padding-left: clamp(48px, 7vw, 112px);
  }

  .split-form-panel .login-box {
    width: 420px;
  }
}

/* Reference-inspired glass learning scene */
.login-screen {
  position: relative;
  display: block;
  min-height: 100svh;
  overflow: hidden;
  background:
    radial-gradient(circle at 51% 58%, rgba(255, 255, 255, 0.96) 0, rgba(255, 255, 255, 0.38) 17%, transparent 38%),
    radial-gradient(circle at 20% 8%, rgba(255, 255, 255, 0.9), transparent 32%),
    linear-gradient(180deg, #a9c4e1 0%, #cfdeec 38%, #edf4f8 62%, #cbddeb 100%);
}

.login-screen::before {
  content: "";
  position: absolute;
  inset: 52% -10% -28%;
  background:
    radial-gradient(ellipse at 50% 0, rgba(255, 255, 255, 0.94) 0 4%, transparent 25%),
    repeating-radial-gradient(ellipse at 50% 10%, transparent 0 44px, rgba(80, 141, 208, 0.16) 46px 48px, transparent 50px 75px);
  transform: scaleX(1.18);
}

.login-screen::after {
  content: "";
  position: absolute;
  inset: 46% 0 auto;
  height: 120px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.78), rgba(255, 255, 255, 0));
  filter: blur(12px);
}

.scene-lines {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.scene-lines span {
  position: absolute;
  bottom: 4%;
  left: -8%;
  width: 72%;
  height: 34%;
  border-top: 2px solid rgba(64, 131, 206, 0.22);
  border-radius: 50%;
  transform: rotate(5deg);
}

.scene-lines span:nth-child(2) {
  bottom: -2%;
  left: 35%;
  width: 78%;
  height: 40%;
  border-color: rgba(126, 103, 221, 0.18);
  transform: rotate(-7deg);
}

.scene-lines span:nth-child(3) {
  bottom: 15%;
  left: 58%;
  width: 50%;
  height: 18%;
  border-color: rgba(45, 120, 199, 0.16);
  transform: rotate(-3deg);
}

.login-layout {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(360px, 0.65fr);
  gap: clamp(48px, 7vw, 120px);
  width: min(1500px, calc(100% - 96px));
  min-height: 100svh;
  margin: 0 auto;
  padding: 42px 0 66px;
}

.login-visual {
  position: relative;
  display: block;
  min-height: 560px;
  padding: 0;
  overflow: visible;
  color: #15345f;
  background: transparent;
  isolation: auto;
}

.login-visual::before,
.login-visual::after {
  content: none;
}

.login-visual .login-brand {
  position: absolute;
  top: 0;
  left: 0;
  color: #153563;
}

.login-visual .learner-logo {
  width: 34px;
  height: 34px;
  border: 0;
  border-radius: 8px;
  background: linear-gradient(145deg, #486fe7, #664fc8);
  box-shadow: 0 8px 20px rgba(69, 84, 184, 0.24);
  font-size: 16px;
}

.login-visual .login-brand-en {
  color: #607a9c;
}

.login-copy {
  position: absolute;
  top: 82px;
  left: 0;
  z-index: 3;
  width: min(640px, 100%);
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
}

.login-eyebrow {
  display: block;
  margin: 0 0 12px;
  color: #4b6d97;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.login-copy h1 {
  margin: 0 0 14px;
  color: #173966;
  font-size: clamp(38px, 3.2vw, 54px);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.04em;
}

.login-copy p {
  max-width: 520px;
  margin: 0;
  color: #55708f;
  font-size: 15px;
  line-height: 1.8;
}

.learning-object {
  position: absolute;
  bottom: 8px;
  left: clamp(110px, 18vw, 280px);
  width: 360px;
  height: 330px;
  perspective: 900px;
  transform: scale(1);
  transform-origin: bottom left;
}

.object-glow {
  position: absolute;
  bottom: 7px;
  left: 36px;
  width: 280px;
  height: 54px;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(74, 95, 211, 0.42), rgba(81, 187, 229, 0.12) 44%, transparent 72%);
  filter: blur(9px);
  transform: rotate(-5deg);
}

.glass-cube {
  position: absolute;
  top: 68px;
  left: 92px;
  width: 156px;
  height: 156px;
  transform: rotateX(-17deg) rotateY(34deg) rotateZ(-5deg);
  transform-style: preserve-3d;
}

.cube-face {
  position: absolute;
  inset: 0;
  display: grid;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.68);
  background: linear-gradient(145deg, rgba(82, 111, 235, 0.78), rgba(78, 212, 225, 0.45));
  box-shadow: inset 0 0 32px rgba(255, 255, 255, 0.24), 0 18px 40px rgba(49, 76, 164, 0.2);
  backdrop-filter: blur(8px);
}

.cube-front {
  align-content: center;
  justify-items: center;
  color: #fff;
  transform: translateZ(78px);
}

.cube-front::before,
.cube-front::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(255, 255, 255, 0.36);
  border-radius: 50%;
}

.cube-front::before {
  width: 112px;
  height: 112px;
  top: -54px;
  right: -38px;
}

.cube-front::after {
  width: 74px;
  height: 74px;
  bottom: -32px;
  left: -18px;
}

.cube-front strong {
  font-size: 30px;
  line-height: 1;
  letter-spacing: 2px;
}

.cube-front span {
  margin-top: 7px;
  font-size: 9px;
  letter-spacing: 2.4px;
}

.cube-right {
  display: flex;
  flex-direction: column;
  gap: 11px;
  padding: 34px 25px;
  background: linear-gradient(145deg, rgba(68, 73, 196, 0.76), rgba(109, 69, 201, 0.52));
  transform: rotateY(90deg) translateZ(78px);
}

.cube-right i {
  display: block;
  height: 8px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.5);
}

.cube-right i:nth-child(2) {
  width: 72%;
}

.cube-right i:nth-child(3) {
  width: 48%;
}

.cube-top {
  background: linear-gradient(145deg, rgba(119, 104, 239, 0.78), rgba(72, 172, 225, 0.5));
  transform: rotateX(90deg) translateZ(78px);
}

.cube-top span {
  width: 72px;
  height: 72px;
  place-self: center;
  border: 1px solid rgba(255, 255, 255, 0.54);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.13);
}

.float-panel {
  position: absolute;
  z-index: -1;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 18px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.5), rgba(90, 168, 232, 0.18));
  box-shadow: 0 16px 36px rgba(43, 91, 160, 0.12);
  backdrop-filter: blur(9px);
}

.panel-one {
  top: 34px;
  left: 25px;
  width: 146px;
  height: 106px;
  padding: 20px;
  transform: rotate(-9deg);
}

.panel-one span {
  display: block;
  width: 34px;
  height: 9px;
  margin-bottom: 15px;
  border-radius: 5px;
  background: #637ae1;
}

.panel-one i {
  display: block;
  width: 88%;
  height: 6px;
  margin: 8px 0;
  border-radius: 4px;
  background: rgba(69, 107, 173, 0.25);
}

.panel-one i:last-child {
  width: 56%;
}

.panel-two {
  right: 26px;
  bottom: 54px;
  display: grid;
  width: 92px;
  height: 92px;
  place-items: center;
  color: #6f69db;
  font-size: 32px;
  transform: rotate(12deg);
}

.login-panel {
  display: grid;
  min-height: auto;
  place-items: center;
  padding: 0;
  background: transparent;
}

.login-panel::before,
.login-box::before {
  content: none;
}

.login-box {
  width: 388px;
  max-width: 100%;
  padding: 32px;
  overflow: visible;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 14px;
  background: rgba(240, 246, 252, 0.58);
  box-shadow: 0 22px 60px rgba(45, 73, 113, 0.13), inset 0 1px 0 rgba(255, 255, 255, 0.62);
  backdrop-filter: blur(18px);
}

.mobile-login-brand {
  display: none;
}

.login-heading {
  margin: 0 0 22px;
  text-align: center;
}

.login-heading span {
  display: block;
  margin-bottom: 7px;
  color: #637c9e;
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 1.8px;
}

.login-heading h2 {
  margin: 0 0 5px;
  color: #18345c;
  font-size: 23px;
  line-height: 1.35;
}

.login-heading p {
  margin: 0;
  color: #71849d;
  font-size: 12px;
}

.account-list {
  grid-template-columns: repeat(3, 1fr);
  gap: 5px;
  margin: 0 0 20px;
  padding: 4px;
  border: 1px solid rgba(255, 255, 255, 0.52);
  border-radius: 9px;
  background: rgba(202, 218, 235, 0.34);
}

.account {
  display: block;
  min-height: 52px;
  padding: 7px 4px;
  border: 1px solid transparent;
  border-radius: 6px;
  background: transparent;
  text-align: center;
  transform: none;
}

.account:hover {
  border-color: rgba(255, 255, 255, 0.55);
  background: rgba(255, 255, 255, 0.38);
  transform: none;
}

.account b {
  color: #34516f;
  font-size: 11px;
}

.account small {
  margin-top: 1px;
  color: #7f92aa;
  font-size: 9px;
}

.account.selected {
  border-color: rgba(255, 255, 255, 0.9);
  background: rgba(255, 255, 255, 0.76);
  box-shadow: 0 3px 9px rgba(64, 89, 128, 0.1);
}

.account.selected b {
  color: #4b58bf;
}

.login-fields .field {
  margin-bottom: 13px;
}

.login-fields .field label {
  margin-bottom: 5px;
  color: #506781;
  font-size: 11px;
  font-weight: 500;
}

.login-fields .field label span {
  color: #8da0b6;
}

.login-box .field input {
  height: 42px;
  padding: 0 11px;
  border-color: rgba(149, 174, 202, 0.32);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.55);
  color: #203b5c;
}

.login-box .field input:hover {
  border-color: rgba(100, 126, 203, 0.45);
}

.login-box .field input:focus {
  border-color: #6876d9;
  box-shadow: 0 0 0 3px rgba(104, 118, 217, 0.13);
}

.login-box .btn-block {
  height: 42px;
  margin-top: 17px;
  border: 0;
  border-radius: 7px;
  background: linear-gradient(90deg, #416fe1, #7358d2);
  box-shadow: 0 10px 23px rgba(84, 91, 199, 0.2);
  font-size: 12px;
  font-weight: 500;
}

.login-box .btn-block:hover {
  border: 0;
  background: linear-gradient(90deg, #315fcf, #6248c2);
  box-shadow: 0 12px 25px rgba(75, 81, 185, 0.25);
  transform: translateY(-1px);
}

.login-note {
  display: block;
  margin: 14px 0 0;
  color: #8497ad;
  font-size: 10px;
  text-align: center;
}

.login-footer {
  position: absolute;
  bottom: 18px;
  left: 50%;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 7px;
  margin: 0;
  color: #6d8098;
  font-size: 9px;
  letter-spacing: 0.5px;
  transform: translateX(-50%);
}

.login-footer span {
  display: grid;
  width: 15px;
  height: 15px;
  place-items: center;
  border-radius: 4px;
  color: #fff;
  background: var(--primary);
  font-size: 8px;
  font-weight: 700;
}

@media (max-width: 1100px) {
  .login-layout {
    grid-template-columns: 1fr;
    width: min(520px, calc(100% - 40px));
    padding: 40px 0 62px;
  }

  .login-visual {
    display: none;
  }

  .login-panel {
    min-height: calc(100svh - 102px);
  }

  .mobile-login-brand {
    display: flex;
    margin-bottom: 28px;
    color: #17385f;
  }

  .mobile-login-brand div:last-child {
    display: block;
  }
}

@media (max-width: 520px) {
  .login-layout {
    width: min(100% - 28px, 430px);
    padding-top: 26px;
  }

  .login-box {
    padding: 26px 22px;
  }

  .account {
    min-height: 50px;
  }

  .login-footer {
    width: 100%;
    justify-content: center;
  }
}

@media (max-height: 720px) and (min-width: 1101px) {
  .login-layout {
    padding-top: 28px;
    padding-bottom: 48px;
  }

  .login-visual {
    min-height: 510px;
  }

  .login-copy {
    top: 70px;
  }

  .learning-object {
    bottom: -16px;
    transform: scale(0.84);
  }

  .login-box {
    padding: 26px 30px;
  }

  .login-heading {
    margin-bottom: 17px;
  }

  .account-list {
    margin-bottom: 15px;
  }

  .login-fields .field {
    margin-bottom: 9px;
  }

  .login-box .field input,
  .login-box .btn-block {
    height: 38px;
  }

  .login-box .btn-block {
    margin-top: 12px;
  }
}

/* Clean split login */
.login-screen {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(480px, 0.88fr);
  min-height: 100svh;
  overflow: visible;
  background: linear-gradient(
    100deg,
    #f2f4f7 0%,
    #f3f5f8 43%,
    #f7f8fa 56%,
    #fcfcfd 66%,
    #fff 76%
  );
}

.login-screen::before,
.login-screen::after {
  content: none;
}

.split-brand-panel {
  min-height: 100svh;
  padding: clamp(42px, 5vw, 86px);
  background: transparent;
}

.split-brand-inner {
  display: flex;
  width: min(600px, 100%);
  height: 100%;
  min-height: calc(100svh - clamp(84px, 10vw, 172px));
  flex-direction: column;
  margin: 0 auto;
}

.split-brand-panel .login-brand {
  color: #182944;
}

.split-brand-panel .learner-logo {
  width: 38px;
  height: 38px;
  border: 0;
  border-radius: 9px;
  background: var(--primary);
  box-shadow: none;
  font-size: 18px;
}

.split-brand-panel .login-brand-en {
  color: #8792a2;
}

.split-copy {
  margin: auto 0;
  padding: 48px 0;
}

.split-kicker {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-bottom: 18px;
  color: #7c8797;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 1px;
}

.split-kicker span {
  width: 28px;
  height: 2px;
  background: var(--primary);
}

.split-copy h1 {
  margin: 0 0 20px;
  color: #172a49;
  font-size: clamp(42px, 4vw, 58px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.045em;
}

.split-copy p {
  max-width: 520px;
  margin: 0;
  color: #748094;
  font-size: 15px;
  line-height: 1.9;
}

.split-meta {
  color: #a2a9b4;
  font-size: 10px;
  letter-spacing: 2px;
}

.split-form-panel {
  display: grid;
  min-height: 100svh;
  padding: clamp(36px, 5vw, 84px);
  border-left: 0;
  background: transparent;
  place-items: center;
}

.split-form-panel::before,
.split-form-panel .login-box::before {
  content: none;
}

.split-form-panel .login-box {
  width: 400px;
  max-width: 100%;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
}

.mobile-login-brand {
  display: none;
}

.split-form-panel .login-heading {
  margin: 0 0 26px;
  text-align: left;
}

.split-form-panel .login-heading span {
  margin-bottom: 9px;
  color: #9a6c73;
  font-size: 9px;
  letter-spacing: 1.6px;
}

.split-form-panel .login-heading h2 {
  margin: 0 0 6px;
  color: #172033;
  font-size: 28px;
}

.split-form-panel .login-heading p {
  color: #7e8795;
  font-size: 13px;
}

.split-form-panel .account-list {
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  margin: 0 0 24px;
  padding: 4px;
  border: 0;
  border-radius: 9px;
  background: #f2f3f5;
}

.split-form-panel .account {
  min-height: 58px;
  padding: 8px 4px;
  border: 1px solid transparent;
  border-radius: 7px;
  background: transparent;
}

.split-form-panel .account:hover {
  border-color: transparent;
  background: #e9ebee;
}

.split-form-panel .account b {
  color: #343d4c;
  font-size: 12px;
}

.split-form-panel .account small {
  margin-top: 2px;
  color: #9199a5;
  font-size: 10px;
}

.split-form-panel .account.selected {
  border-color: #e1e3e7;
  background: #fff;
  box-shadow: 0 1px 3px rgba(25, 32, 45, 0.08);
}

.split-form-panel .account.selected b {
  color: var(--primary-dark);
}

.split-form-panel .login-fields .field {
  margin-bottom: 15px;
}

.split-form-panel .login-fields .field label {
  margin-bottom: 6px;
  color: #4e5765;
  font-size: 12px;
}

.split-form-panel .login-fields .field label span {
  color: #a0a6af;
}

.split-form-panel .login-box .field input {
  height: 45px;
  padding: 0 12px;
  border-color: #d9dde3;
  border-radius: 8px;
  background: #fff;
  color: #232d3d;
}

.split-form-panel .login-box .field input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-ring);
}

.split-form-panel .login-box .btn-block {
  height: 45px;
  margin-top: 19px;
  border: 1px solid var(--primary);
  border-radius: 8px;
  background: var(--primary);
  box-shadow: none;
  font-size: 13px;
}

.split-form-panel .login-box .btn-block:hover {
  border-color: var(--primary-dark);
  background: var(--primary-dark);
  box-shadow: none;
  transform: none;
}

.split-form-panel .login-note {
  margin-top: 14px;
  color: #9aa1ab;
  font-size: 11px;
}

.split-form-panel .login-footer {
  position: static;
  display: flex;
  justify-content: center;
  width: 100%;
  margin: 32px 0 0;
  color: #a0a7b1;
  font-size: 9px;
  transform: none;
}

@media (max-width: 1000px) {
  .login-screen {
    grid-template-columns: 1fr;
  }

  .split-brand-panel {
    display: none;
  }

  .split-form-panel {
    min-height: 100svh;
    padding: 36px 24px;
    border-left: 0;
  }

  .split-form-panel .mobile-login-brand {
    display: flex;
    margin-bottom: 34px;
    color: #172a49;
  }

  .split-form-panel .mobile-login-brand div:last-child {
    display: block;
  }

  .split-form-panel .mobile-login-brand .learner-logo {
    width: 36px;
    height: 36px;
    border-radius: 9px;
    background: var(--primary);
    box-shadow: none;
    font-size: 17px;
  }
}

@media (max-width: 520px) {
  .split-form-panel {
    padding: 28px 20px;
  }

  .split-form-panel .login-heading {
    margin-bottom: 22px;
  }

  .split-form-panel .account {
    min-height: 56px;
  }
}

/* Final desktop composition override */
@media (min-width: 1001px) {
  .login-screen {
    grid-template-columns: minmax(0, 1.05fr) minmax(500px, 0.95fr);
  }

  .split-brand-inner {
    width: min(560px, 100%);
    justify-content: center;
  }

  .split-copy {
    margin: 50px 0 0;
    padding: 0;
  }

  .split-meta {
    margin-top: 48px;
  }

  .split-form-panel {
    padding-right: clamp(48px, 7vw, 112px);
    padding-left: clamp(48px, 7vw, 112px);
  }

  .split-form-panel .login-box {
    width: 420px;
  }
}

/* Framed login panel */
.split-form-panel .login-box {
  width: 520px;
  padding: 42px 46px;
  border: 1px solid #e2e5ea;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 16px 42px rgba(28, 39, 58, 0.055);
}

@media (max-width: 1000px) {
  .split-form-panel .login-box {
    width: 440px;
    padding: 34px;
  }
}

@media (max-width: 520px) {
  .split-form-panel .login-box {
    width: 100%;
    padding: 28px 22px;
    border-radius: 14px;
  }
}

/* Typography and left content density */
@media (min-width: 1001px) {
  .split-brand-inner {
    width: min(620px, 100%);
  }

  .split-copy h1 {
    font-size: clamp(44px, 3.8vw, 56px);
    line-height: 1.12;
    letter-spacing: -0.035em;
  }

  .split-copy > p {
    line-height: 1.75;
  }

  .split-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-top: 38px;
  }

  .split-feature {
    min-height: 116px;
    padding: 15px;
    border: 1px solid #e4e7eb;
    border-radius: 11px;
    background: rgba(255, 255, 255, 0.58);
  }

  .split-feature > span {
    display: grid;
    width: 28px;
    height: 28px;
    place-items: center;
    border-radius: 7px;
    color: var(--primary);
    background: #fff0f2;
    font-size: 11px;
    font-weight: 700;
  }

  .split-feature b {
    display: block;
    margin: 11px 0 3px;
    color: #283548;
    font-size: 13px;
  }

  .split-feature p {
    margin: 0;
    color: #8892a1;
    font-size: 11px;
    line-height: 1.55;
  }

  .split-meta {
    margin-top: 32px;
  }
}

@media (max-width: 1000px) {
  .split-features {
    display: none;
  }
}

.chapter-resource-count {
  display: inline-block;
  padding: 2px 7px;
  border-radius: 999px;
  color: #6e7b8d;
  background: #eef1f5;
  font-size: 11px;
  font-weight: 500;
}

.chapter-item.selected .chapter-resource-count {
  color: var(--primary-dark);
  background: #ffe4e8;
}

.resource-list:empty::before {
  content: "本章还没有课件，请上传文件或添加视频链接";
  display: block;
  padding: 22px 16px;
  color: var(--muted);
  text-align: center;
}

/* Student learning workspace */
.student-mode .content {
  width: 100%;
  max-width: 2200px;
  margin-inline: auto;
}

.student-mode .quick-rail {
  display: none !important;
}

.learner-dashboard-head {
  display: grid;
  grid-template-columns: minmax(280px, 0.8fr) minmax(560px, 1.2fr);
  gap: 28px;
  align-items: center;
  margin-bottom: 20px;
  padding: 26px 28px;
  border: 1px solid #e7e9ee;
  border-radius: 14px;
  background: linear-gradient(135deg, #fff 0%, #fff 70%, #fff5f6 100%);
}

.learner-dashboard-head h1 {
  margin: 5px 0 6px;
  font-size: 28px;
  letter-spacing: -0.02em;
}

.learner-dashboard-head p,
.section-head p {
  margin: 4px 0 0;
  color: var(--muted);
}

.learner-eyebrow {
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.learning-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.learning-stat {
  min-width: 0;
  padding: 16px;
  border: 1px solid #e5e8ed;
  border-radius: 11px;
  background: #fff;
  color: var(--text);
  text-align: left;
  cursor: pointer;
  transition: border-color 0.18s, box-shadow 0.18s, transform 0.18s;
}

.learning-stat:hover {
  border-color: #d5a3aa;
  box-shadow: 0 8px 22px rgba(32, 39, 51, 0.08);
  transform: translateY(-1px);
}

.learning-stat strong,
.learning-stat span,
.learning-stat small {
  display: block;
}

.learning-stat strong {
  margin-bottom: 2px;
  font-size: 26px;
  line-height: 1.1;
}

.learning-stat span {
  font-weight: 650;
}

.learning-stat small {
  margin-top: 8px;
  color: var(--muted);
}

.learning-stat.todo strong { color: var(--primary); }
.learning-stat.doing strong { color: #2f6fc4; }
.learning-stat.done strong { color: var(--green); }

.learning-focus .section-head,
.recommendations .section-head {
  align-items: flex-start;
}

.learning-task-list,
.session-list,
.student-learning-list {
  display: grid;
  gap: 10px;
}

.learning-task-card {
  display: grid;
  grid-template-columns: 50px minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 15px 16px;
  border: 1px solid #e7e9ee;
  border-radius: 11px;
  background: #fff;
}

.learning-task-card:hover {
  border-color: #d8dce3;
  background: #fcfcfd;
}

.learning-task-main,
.student-learning-row > div,
.session-card > div:nth-child(2) {
  min-width: 0;
}

.learning-task-title {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.learning-task-title h3,
.student-learning-row h3,
.session-card h3 {
  margin: 0;
  font-size: 15px;
}

.learning-task-card p,
.student-learning-row p,
.session-card p {
  margin: 4px 0;
  color: var(--muted);
}

.learning-task-card small,
.student-learning-row small {
  color: #8793a3;
}

.learning-task-card .progress,
.student-learning-row .progress {
  max-width: 560px;
  margin: 8px 0 5px;
}

.course-type {
  display: inline-grid;
  min-width: 42px;
  height: 26px;
  padding: 0 8px;
  place-items: center;
  border-radius: 7px;
  font-size: 11px;
  font-weight: 700;
}

.course-type.online,
.learning-type-icon.online { background: #eaf2ff; color: #2867c9; }
.course-type.live,
.learning-type-icon.live { background: #fff0f2; color: var(--primary); }
.course-type.offline,
.learning-type-icon.offline { background: #eaf8f2; color: #17805e; }
.course-type.mixed { background: #f3ecff; color: #7240a8; }

.course-mode-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.course-mode-card {
  display: grid;
  grid-template-columns: 42px 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 17px;
  border: 1px solid #e5e8ed;
  border-radius: 11px;
  background: #fff;
  color: var(--text);
  text-align: left;
  cursor: pointer;
}

.course-mode-card:hover {
  border-color: #d5a3aa;
  background: #fffafb;
}

.course-mode-card > span {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 10px;
  background: #f1f4f8;
  font-weight: 700;
}

.course-mode-card.online > span { background: #eaf2ff; color: #2867c9; }
.course-mode-card.live > span { background: #fff0f2; color: var(--primary); }
.course-mode-card.offline > span { background: #eaf8f2; color: #17805e; }

.course-mode-card strong,
.course-mode-card small {
  display: block;
}

.course-mode-card small {
  margin-top: 3px;
  color: var(--muted);
}

.course-mode-card > b {
  color: var(--primary);
  font-size: 12px;
}

.recommendations .portal-grid {
  grid-template-columns: repeat(3, 1fr);
}

#studentCourses .course-body .course-type {
  margin-bottom: 9px;
}

.learning-total {
  display: grid;
  grid-template-columns: auto auto auto auto;
  gap: 8px 12px;
  align-items: baseline;
  padding: 12px 16px;
  border: 1px solid #e5e8ed;
  border-radius: 10px;
  background: #fff;
}

.learning-total strong {
  font-size: 22px;
}

.learning-total span {
  color: var(--muted);
  font-size: 12px;
}

.learning-status-tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 14px;
  padding: 4px;
  border: 1px solid #e5e8ed;
  border-radius: 10px;
  background: #fff;
  width: fit-content;
}

.learning-status-tabs button {
  border: 0;
  border-radius: 7px;
  padding: 8px 14px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.learning-status-tabs button.active {
  background: #fff0f2;
  color: var(--primary);
  font-weight: 650;
}

.learning-status-tabs span {
  margin-left: 4px;
  font-size: 11px;
}

.student-learning-row {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr) auto auto;
  gap: 14px;
  align-items: center;
  padding: 16px;
  border: 1px solid #e5e8ed;
  border-radius: 11px;
  background: #fff;
}

.learning-type-icon {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border-radius: 11px;
  font-size: 11px;
  font-weight: 700;
}

.student-learning-empty {
  padding: 48px;
  border: 1px dashed #dce0e6;
  border-radius: 11px;
  color: var(--muted);
  text-align: center;
}

.session-card {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr) auto auto;
  gap: 18px;
  align-items: center;
  padding: 18px;
  border: 1px solid #e5e8ed;
  border-radius: 12px;
  background: #fff;
}

.session-card.live-now {
  border-color: #e7b7bd;
  box-shadow: inset 3px 0 var(--primary);
}

.session-date {
  padding-right: 16px;
  border-right: 1px solid #e5e8ed;
  text-align: center;
}

.session-date strong,
.session-date span {
  display: block;
}

.session-date strong {
  font-size: 16px;
}

.session-date span {
  margin-top: 3px;
  color: var(--muted);
}

@media (min-width: 1680px) {
  .student-mode #studentHome.active {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(400px, 1fr);
    gap: 20px;
    align-items: start;
  }

  #studentHome > .learner-dashboard-head,
  #studentHome > .recommendations {
    grid-column: 1 / -1;
  }

  #studentHome > .learner-dashboard-head,
  #studentHome > .portal-section {
    margin-bottom: 0;
  }

  #studentHome > .learning-focus {
    grid-column: 1;
  }

  #studentHome > .course-types {
    grid-column: 2;
  }

  #studentHome > .course-types .course-mode-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 1100px) {
  .student-mode .learner-links {
    display: flex;
    overflow-x: auto;
  }

  .student-mode .learner-actions .portal-search,
  .student-mode .learner-actions > b {
    display: none;
  }

  .learner-dashboard-head {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 800px) {
  .student-mode .top {
    height: auto;
    min-height: 64px;
    padding: 0 12px;
  }

  .student-mode .learner-top {
    gap: 8px;
  }

  .student-mode .learner-brand,
  .student-mode .learner-actions .bell,
  .student-mode .learner-actions .avatar {
    display: none;
  }

  .student-mode .learner-link {
    min-height: 64px;
    padding: 0 10px;
  }

  .learning-task-card,
  .student-learning-row,
  .session-card {
    grid-template-columns: 50px minmax(0, 1fr);
  }

  .learning-task-card > .btn,
  .student-learning-row > .badge,
  .student-learning-row > .btn,
  .session-card > .badge,
  .session-card > .btn {
    grid-column: 2;
    justify-self: start;
  }

  .course-mode-grid,
  .recommendations .portal-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .learner-dashboard-head {
    padding: 20px;
  }

  .learning-stats {
    grid-template-columns: 1fr;
  }

  .learning-status-tabs {
    width: 100%;
    overflow-x: auto;
  }

  .learning-status-tabs button {
    flex: none;
  }
}

/* Student viewport adaptation */
.student-mode .content {
  width: 100%;
  padding-inline: clamp(16px, 2.4vw, 36px);
}

.student-mode .learner-links {
  min-width: 0;
}

@media (max-width: 1280px) {
  .student-mode .top {
    padding-inline: 20px;
  }

  .student-mode .learner-top {
    gap: 18px;
  }

  .student-mode .learner-link {
    padding-inline: 12px;
  }

  .learner-dashboard-head {
    grid-template-columns: minmax(250px, 0.72fr) minmax(520px, 1.28fr);
    gap: 20px;
  }
}

@media (max-width: 1000px) {
  .student-mode .content {
    padding-block: 22px;
  }

  .learner-dashboard-head {
    grid-template-columns: 1fr;
    padding: 22px;
  }

  .learning-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .course-mode-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 800px) {
  .student-mode .learner-links {
    flex: 1 1 auto;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    scrollbar-width: none;
  }

  .student-mode .learner-links::-webkit-scrollbar {
    display: none;
  }

  .student-mode .learner-actions {
    flex: 0 0 auto;
  }

  .recommendations .portal-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .learning-task-card,
  .student-learning-row {
    grid-template-columns: 48px minmax(0, 1fr);
    gap: 12px;
  }

  .session-card {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 12px;
    padding: 15px;
  }

  .session-date {
    padding-right: 10px;
  }

  .learning-task-card > .btn,
  .student-learning-row > .btn,
  .session-card > .btn {
    min-height: 40px;
  }
}

@media (max-width: 700px) {
  .student-mode .content {
    padding: 18px 14px 28px;
  }

  .student-mode .head {
    gap: 12px;
  }

  .student-mode .head h1,
  .learner-dashboard-head h1 {
    font-size: 24px;
  }

  .student-mode .toolbar {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(140px, 0.55fr);
  }

  .student-mode .toolbar .search,
  .student-mode .toolbar select {
    width: 100%;
    min-width: 0;
  }

  .learning-total {
    width: 100%;
    grid-template-columns: auto 1fr auto 1fr;
  }

  .recommendations .portal-grid,
  #studentCourses .course-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .course-mode-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .student-mode .top {
    min-height: 58px;
  }

  .student-mode .learner-link {
    min-height: 58px;
    padding-inline: 9px;
    font-size: 13px;
  }

  .student-mode .learner-actions {
    gap: 4px;
  }

  .student-mode .learner-actions .text-btn {
    display: inline-block;
    padding-inline: 4px;
    font-size: 12px;
  }

  .learner-dashboard-head,
  .portal-section {
    padding: 16px;
    border-radius: 12px;
  }

  .learning-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
  }

  .learning-stat {
    padding: 12px 10px;
    text-align: center;
  }

  .learning-stat strong {
    font-size: 23px;
  }

  .learning-stat small {
    display: none;
  }

  .section-head {
    gap: 10px;
  }

  .section-head h2 {
    font-size: 17px;
  }

  .learning-task-card,
  .student-learning-row,
  .session-card {
    padding: 13px;
  }

  .learning-task-card > .btn,
  .student-learning-row > .btn,
  .session-card > .btn {
    width: 100%;
  }

  .student-mode .toolbar {
    grid-template-columns: 1fr;
  }

  .learning-status-tabs {
    gap: 3px;
    padding: 3px;
  }

  .learning-status-tabs button {
    padding: 8px 10px;
  }

  .course-mode-grid,
  .recommendations .portal-grid,
  #studentCourses .course-grid {
    grid-template-columns: 1fr;
  }

  .viewer {
    min-height: 260px;
    padding: 22px 16px;
  }
}

@media (max-width: 380px) {
  .student-mode .content {
    padding-inline: 10px;
  }

  .learner-dashboard-head,
  .portal-section {
    padding: 13px;
  }

  .learning-task-card,
  .student-learning-row {
    grid-template-columns: 42px minmax(0, 1fr);
    gap: 10px;
  }

  .learning-type-icon {
    width: 42px;
    height: 42px;
  }

  .session-card {
    grid-template-columns: 62px minmax(0, 1fr);
  }

  .learning-status-tabs button {
    padding-inline: 8px;
  }
}

/* Course types and completion rules */
#tasks table {
  min-width: 1080px;
}

#taskRows .course-type {
  white-space: nowrap;
}

.course-logic-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}

.course-logic-grid article {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 10px;
  align-items: center;
  padding: 15px 16px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: #fff;
}

.course-logic-grid article p {
  grid-column: 1 / -1;
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.course-dialog {
  width: 820px;
}

.course-base-fields {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.course-name-field {
  grid-column: 1 / -1;
}

.course-rule-summary {
  margin: 18px 0;
  padding: 12px 14px;
  border-left: 3px solid #2867c9;
  border-radius: 8px;
  background: #eef5ff;
  color: #356096;
}

.course-rule-summary.offline {
  border-left-color: #17805e;
  background: #edf8f4;
  color: #176d53;
}

.course-rule-summary.live {
  border-left-color: var(--primary);
  background: var(--primary-soft);
  color: var(--primary-dark);
}

.live-config-head { display:flex; align-items:flex-start; justify-content:space-between; gap:16px; margin-bottom:16px; }
.live-config-head h3 { margin:0 0 5px; }
.live-config-head p { margin:0; }
.live-registration-grid { display:grid; grid-template-columns:1fr; gap:14px; align-items:end; margin-bottom:12px; }
.live-registration-grid .field { margin:0; }
.live-registration-actions { display:flex; align-items:center; flex-wrap:wrap; gap:10px; margin-bottom:18px; padding-bottom:18px; border-bottom:1px solid var(--border); }
.live-registration-actions .field-help { flex:1 1 320px; }

@media (max-width: 1100px) {
  .live-registration-grid { grid-template-columns:1fr 1fr; }
  .live-reference-field { grid-column:1 / -1; }
}

@media (max-width: 700px) {
  .live-config-head { flex-direction:column; }
  .live-registration-grid { grid-template-columns:1fr; }
  .live-reference-field { grid-column:auto; }
  .live-registration-actions .btn { width:100%; }
}

.course-config-help {
  margin: -8px 0 12px;
}

.course-type-config {
  padding: 4px 0 8px;
}

.supporting-materials {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.supporting-materials-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.supporting-materials-head h3,
.supporting-materials-head p {
  margin: 0;
}

.supporting-materials-head p {
  margin-top: 5px;
  color: var(--muted);
  font-size: 12px;
}

.attachment-upload-zone {
  padding: 16px;
}

.attachment-list:empty::before {
  content: "暂未添加附件；附件不会影响学习进度";
}

.completion-rule-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.completion-rule-list > div,
.integration-empty {
  padding: 17px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fafbfc;
}

.completion-rule-list b,
.completion-rule-list span {
  display: block;
}

.completion-rule-list span,
.integration-empty p {
  margin: 5px 0 0;
  color: var(--muted);
}

.integration-banner {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 16px;
  padding: 16px 18px;
  border: 1px solid #ecd6a7;
  border-radius: 11px;
  background: #fffaf0;
}

.integration-banner p {
  margin: 5px 0 0;
  color: #7b6a49;
}

.integration-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--orange);
}

.demo-data {
  opacity: 0.82;
}

.btn:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.page-context-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  width: max-content;
  max-width: 100%;
  margin-bottom: 20px;
  overflow-x: auto;
  white-space: nowrap;
}

.page-back {
  display: inline-flex;
  flex: none;
  min-height: 34px;
  align-items: center;
  gap: 6px;
  padding: 0 11px 0 7px;
  border: 1px solid #e2e6ec;
  border-radius: 9px;
  background: #fff;
  color: var(--primary);
  font-weight: 650;
  box-shadow: 0 2px 8px rgba(28, 37, 52, 0.04);
  cursor: pointer;
  transition: border-color 0.18s, background 0.18s, box-shadow 0.18s;
}

.page-back:hover {
  border-color: #e2aeb4;
  background: #fffafb;
  box-shadow: 0 4px 12px rgba(28, 37, 52, 0.07);
}

.page-back-arrow {
  display: grid;
  width: 20px;
  height: 20px;
  place-items: center;
  border-radius: 50%;
  background: var(--primary-soft);
  font-size: 14px;
  line-height: 1;
}

.page-breadcrumb {
  display: flex;
  flex: none;
  min-height: 34px;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0 12px;
  border: 1px solid #e6e9ee;
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.78);
  list-style: none;
  color: var(--text);
  font-size: 13px;
  box-shadow: 0 2px 8px rgba(28, 37, 52, 0.025);
}

.page-breadcrumb button {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 0;
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.page-breadcrumb button:hover {
  color: var(--primary);
}

.page-breadcrumb-home {
  display: grid;
  width: 18px;
  height: 18px;
  place-items: center;
  border-radius: 5px;
  background: #f0f2f5;
  color: #7a8492;
  font-size: 12px;
}

.page-breadcrumb-separator {
  color: #b5bbc4;
  font-size: 16px;
  line-height: 1;
}

.page-breadcrumb [aria-current="page"] {
  color: #293446;
  font-weight: 650;
}

.offline-complete-all {
  margin-top: 18px;
  border: 1px solid #e0e5ec;
  border-radius: 12px;
  background: #fafbfc;
  transition: border-color .18s, background .18s, box-shadow .18s;
}

.offline-complete-all[hidden] {
  display: none;
}

.offline-complete-all label {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr) 34px;
  gap: 12px;
  align-items: center;
  padding: 15px 16px;
  cursor: pointer;
}

.offline-complete-all input {
  width: 19px;
  height: 19px;
  margin: 0;
  accent-color: var(--primary);
  cursor: pointer;
}

.offline-complete-all-copy b,
.offline-complete-all-copy small {
  display: block;
}

.offline-complete-all-copy b {
  margin-bottom: 4px;
  color: var(--text);
  font-size: 14px;
}

.offline-complete-all-copy small {
  color: var(--muted);
  line-height: 1.55;
}

.offline-complete-all-mark {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border-radius: 50%;
  background: #edf0f4;
  color: #a0a9b6;
  font-weight: 700;
  transition: background .18s, color .18s, transform .18s;
}

.offline-complete-all:not(.disabled):hover {
  border-color: #d5a2a8;
  background: #fffafb;
}

.offline-complete-all.selected {
  border-color: var(--primary);
  background: var(--primary-soft);
  box-shadow: 0 0 0 3px rgba(198, 31, 47, .08);
}

.offline-complete-all.selected .offline-complete-all-mark {
  background: var(--primary);
  color: #fff;
  transform: scale(1.04);
}

.offline-complete-all.disabled {
  opacity: .62;
}

.offline-complete-all.disabled label,
.offline-complete-all.disabled input {
  cursor: not-allowed;
}

.teacher-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.teacher-grid > .empty {
  grid-column: 1 / -1;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
}

.teacher-card {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 4px 14px rgba(26, 36, 52, .025);
}

.teacher-card-head {
  display: flex;
  align-items: flex-start;
  gap: 11px;
}

.teacher-card-head .avatar {
  flex: none;
  background: var(--primary-soft);
  color: var(--primary);
}

.teacher-card-identity {
  min-width: 0;
  flex: 1;
}

.teacher-card-identity h3 {
  margin: 0 0 3px;
  font-size: 16px;
}

.teacher-card-account {
  color: var(--muted);
  font-size: 12px;
}

.teacher-card-edit {
  flex: none;
}

.teacher-tags,
.teacher-tag-preview {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.teacher-tags {
  min-height: 26px;
  margin: 15px 0 12px;
}

.teacher-tag {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
}

.teacher-specialty {
  min-height: 21px;
  margin: 0 0 15px;
}

.teacher-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.teacher-stat {
  padding: 10px 12px;
  border-radius: 9px;
  background: #f7f9fc;
}

.teacher-stat span,
.teacher-stat strong {
  display: block;
}

.teacher-stat span {
  color: var(--muted);
  font-size: 12px;
}

.teacher-stat strong {
  margin-top: 5px;
  color: var(--text);
  font-size: 22px;
}

.teacher-dialog {
  width: 680px;
}

.teacher-person-picker > .field-help {
  margin: -1px 0 10px;
}

.teacher-person-picker input {
  width: 100%;
}

.teacher-person-results {
  max-height: 185px;
}

.teacher-selected-person {
  margin-top: 12px;
}

.teacher-selected-card {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 10px 11px;
  border: 1px solid #e0e5ec;
  border-radius: 9px;
  background: #fff;
}

.teacher-selected-card .avatar {
  width: 32px;
  height: 32px;
  flex: none;
}

.teacher-selected-card .sub {
  margin-top: 2px;
  font-size: 12px;
}

.teacher-specialty-field,
.teacher-tags-field {
  margin-top: 18px;
}

.teacher-tag-preview {
  min-height: 38px;
  margin-top: 10px;
  padding: 8px;
  align-items: center;
  border: 1px dashed #d9dfe8;
  border-radius: 9px;
  background: #fafbfc;
}

@media (max-width: 1100px) {
  .teacher-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 700px) {
  .teacher-grid,
  .teacher-form-grid {
    grid-template-columns: 1fr;
  }
}

.completion-flow {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 16px;
  padding: 13px 16px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  white-space: nowrap;
}

.completion-flow span {
  padding: 5px 9px;
  border-radius: 7px;
  background: #edf8f4;
  color: #176d53;
  font-size: 12px;
  font-weight: 650;
}

.completion-flow i {
  color: #a5adba;
  font-style: normal;
}

.viewer-content {
  width: min(520px, 100%);
}

.viewer-content p {
  color: #aab7ca;
}

.live-report-action {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 9px;
}

.live-report-dialog {
  width: min(940px, calc(100vw - 36px));
}

.live-report-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 20px;
}

.live-report-metrics article {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fafbfc;
}

.live-report-metrics span,
.live-report-metrics strong {
  display: block;
}

.live-report-metrics span {
  color: var(--muted);
  font-size: 12px;
}

.live-report-metrics strong {
  margin-top: 5px;
  font-size: 22px;
}

.live-report-section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  margin-bottom: 10px;
}

.live-report-section-head h3 {
  margin: 0 0 4px;
}

.live-viewer-table {
  max-height: 360px;
  overflow: auto;
}

.viewer-progress {
  width: 100%;
  margin: 16px 0;
  background: #344158;
}

.online-rule-panel {
  margin-top: 14px;
  padding: 17px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: #fff;
}

.online-rule-panel h3 {
  margin: 0 0 12px;
}

.rule-progress-row {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) auto;
  gap: 11px;
  align-items: center;
  padding: 11px 0;
  border-top: 1px solid var(--line);
}

.rule-progress-row small {
  display: block;
  margin-top: 3px;
  color: var(--muted);
}

@media (max-width: 1000px) {
  .course-logic-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .page-context-nav {
    width: 100%;
    gap: 8px;
    margin-bottom: 14px;
    padding-bottom: 2px;
  }

  .page-back,
  .page-breadcrumb {
    min-height: 32px;
  }

  .course-base-fields,
  .completion-rule-list {
    grid-template-columns: 1fr;
  }

  .course-name-field {
    grid-column: auto;
  }

  .rule-progress-row {
    grid-template-columns: 40px minmax(0, 1fr);
  }

  .rule-progress-row > :last-child {
    grid-column: 2;
    justify-self: start;
  }

  .live-report-action {
    align-items: stretch;
    flex-direction: column;
  }

  .live-report-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}