:root {
  --primary: #009688;
  --primary-dark: #0b6f65;
  --primary-soft: #e7f7f4;
  --bg: #f2f2f2;
  --card: #ffffff;
  --text: #333333;
  --muted: #666666;
  --border: #e6e6e6;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
}

.layui-input,
.layui-textarea,
.layui-form-select dl dd,
.layui-form-label,
.layui-nav,
.layui-table,
.layui-btn {
  font-size: 14px;
}

.site-topbar {
  background: #ffffff;
  border-bottom: 1px solid var(--border);
}

.site-topbar .layui-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
}

.site-brand {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
}

.site-main {
  padding: 24px 0;
}

.layui-layout-admin .layui-header {
  background: #ffffff;
  border-bottom: 1px solid var(--border);
}

.layui-layout-admin .layui-header .layui-nav {
  background: transparent !important;
}

.layui-layout-admin .layui-header .layui-nav .layui-nav-item a,
.layui-layout-admin .layui-header .layui-nav .layui-nav-item a:hover {
  color: #2f3a3a !important;
}

.layui-layout-admin .layui-header .layui-nav .layui-this a {
  color: var(--primary-dark) !important;
}

.layui-layout-admin .layui-logo {
  color: var(--primary);
  font-weight: 700;
  font-size: 20px;
}

.layui-layout-admin .layui-side {
  background: #ffffff;
  border-right: 1px solid var(--border);
}

.layui-layout-admin .layui-body {
  background: var(--bg);
  padding: 20px;
  overflow-x: hidden;
}

.layui-side-scroll {
  background: #ffffff;
}

.layui-nav-tree {
  background: transparent;
}

.layui-nav-tree .layui-nav-item a {
  color: #2f3a3a;
  height: 46px;
  line-height: 46px;
}

.layui-nav-tree .layui-nav-itemed > a,
.layui-nav-tree .layui-this > a,
.layui-nav-tree .layui-this > a:hover {
  background-color: var(--primary-soft);
  color: var(--primary-dark);
}

.layui-btn {
  background-color: var(--primary);
}

.layui-btn:hover {
  background-color: var(--primary-dark);
}

.layui-btn-primary {
  color: var(--primary-dark) !important;
  border-color: #b8dfd8 !important;
  background: #ffffff !important;
}

.layui-btn-primary:hover {
  color: var(--primary-dark) !important;
  border-color: var(--primary) !important;
}

.layui-input,
.layui-textarea,
.layui-select-title input {
  color: #2f3a3a;
  border-color: #d8e5e2;
}

.layui-input:focus,
.layui-textarea:focus {
  border-color: var(--primary);
}

.page-panel {
  background: transparent;
  width: 100%;
  max-width: 100%;
}

.page-title {
  margin: 0 0 4px;
  font-size: 24px;
  font-weight: 700;
}

.page-desc {
  margin: 0;
  color: var(--muted);
}

a {
  color: var(--primary);
}

.page-wrap {
  min-height: 100vh;
  padding: 28px 16px;
}

.container {
  max-width: 1180px;
  margin: 0 auto;
}

.hero-card,
.card,
.auth-card {
  background: var(--card);
  border-radius: 16px;
  border: 1px solid rgba(0, 150, 136, 0.08);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.04);
}

.hero-card {
  padding: 40px;
  display: grid;
  gap: 18px;
}

.layui-card {
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.04);
  border: 1px solid rgba(0, 150, 136, 0.08);
}

.layui-card-header {
  height: auto;
  min-height: 42px;
  line-height: 42px;
  font-size: 16px;
  font-weight: 700;
}

.layui-card-body {
  padding: 20px;
}

.hero-title {
  margin: 0;
  font-size: 34px;
  font-weight: 700;
}

.hero-subtitle {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.landing-tag {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 700;
}

.landing-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.landing-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 180px;
  height: 42px;
  padding: 0 18px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
}

.landing-btn.secondary {
  color: var(--primary-dark);
  border: 1px solid #b8dfd8;
  background: #ffffff;
}

.landing-btn.secondary:hover {
  color: var(--primary-dark);
  border-color: var(--primary);
}

.auth-shell {
  min-height: 100vh;
  padding: 48px 20px;
}

.auth-card {
  width: 100%;
  max-width: 480px;
  padding: 0;
  overflow: hidden;
}

.brand {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0;
}

.brand h1,
.brand h2 {
  margin: 0;
  font-size: 24px;
}

.brand small {
  color: var(--muted);
}

.grid-3,
.grid-2 {
  display: grid;
  gap: 16px;
}

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

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

.stat-card {
  padding: 22px;
}

.stat-label {
  color: var(--muted);
  font-size: 14px;
}

.stat-value {
  margin-top: 10px;
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
}

.stats-grid-4 .layui-col-md3 .layui-card {
  min-height: 140px;
}

.toolbar,
.header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.header-bar {
  margin-bottom: 18px;
}

.card {
  padding: 20px;
}

.layui-panel.card {
  padding: 20px;
}

.stat-card .layui-card-body,
.stat-card {
  padding: 22px;
}

.auth-header {
  padding: 24px 28px 10px;
  border-bottom: 1px solid #f0f0f0;
  background: linear-gradient(180deg, #ffffff 0%, #fbfffe 100%);
}

.auth-body {
  padding: 12px 28px 28px;
}

.form-label {
  margin-bottom: 8px;
  color: #444;
  font-weight: 600;
}

.narrow-card {
  max-width: 620px;
}

.table-ops {
  display: flex;
  gap: 8px;
  align-items: center;
}

.auth-side-note {
  color: var(--muted);
  line-height: 1.8;
}

.page-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hidden {
  display: none !important;
}

.card + .card {
  margin-top: 16px;
}

.card-title {
  margin: 0 0 16px;
  font-size: 18px;
  font-weight: 700;
}

.muted {
  color: var(--muted);
}

.mono {
  font-family: Consolas, Monaco, monospace;
  background: #f8fbfb;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  white-space: pre-wrap;
  word-break: break-all;
}

.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.layui-table td,
.layui-table th {
  white-space: nowrap;
}

.chart-box {
  height: 320px;
}

.footer-links {
  margin-top: 16px;
  color: var(--muted);
  text-align: center;
}

.package-table td,
.package-table th {
  text-align: center;
}

.landing-shell {
  display: grid;
  gap: 16px;
}

.landing-hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #ffffff 0%, #f6fffc 100%);
}

.landing-hero::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 150, 136, 0.12) 0%, rgba(0, 150, 136, 0) 68%);
}

.landing-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.95fr;
  gap: 16px;
}

.landing-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.step-card {
  border: 1px solid #e4f0ed;
  border-radius: 14px;
  padding: 16px;
  background: #fff;
}

.step-no {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-soft);
  color: var(--primary-dark);
  font-weight: 700;
  margin-bottom: 10px;
}

.step-title {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 700;
}

.step-desc {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
  font-size: 13px;
}

.hero-panel {
  position: relative;
  z-index: 1;
}

.topbar-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.cards-toolbar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: end;
}

.cards-toolbar .field {
  min-width: 160px;
}

.result-modal {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.32);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 9999;
}

.result-modal.show {
  display: flex;
}

.result-modal-card {
  width: 100%;
  max-width: 640px;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(15, 23, 42, 0.18);
  border: 1px solid #e6f0ee;
  overflow: hidden;
}

.result-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid #edf2f2;
}

.result-modal-title {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
}

.result-modal-body {
  padding: 20px;
}

.result-modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  padding: 0 20px 20px;
  flex-wrap: wrap;
}

.result-list {
  max-height: 320px;
  overflow: auto;
}

.mobile-menu-btn,
.mobile-sidebar-backdrop {
  display: none;
}

.mobile-menu-btn {
  width: 42px;
  height: 42px;
  border: 1px solid #dce9e5;
  border-radius: 12px;
  background: #ffffff;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  padding: 0;
}

.mobile-menu-btn span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--primary-dark);
}

.mobile-sidebar-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.36);
  z-index: 999;
}

.mobile-side-actions {
  display: none;
}

@media (max-width: 900px) {
  html,
  body {
    width: 100%;
    overflow-x: hidden;
  }

  .layui-layout,
  .layui-layout-admin {
    min-width: 0 !important;
    width: 100% !important;
  }

  .layui-layout-admin,
  .layui-layout-admin > .layui-header,
  .layui-layout-admin > .layui-side,
  .layui-layout-admin > .layui-body {
    position: static !important;
  }

  .layui-layout-admin > .layui-header,
  .layui-layout-admin > .layui-side,
  .layui-layout-admin > .layui-body {
    left: auto !important;
    right: auto !important;
    top: auto !important;
    bottom: auto !important;
    width: 100% !important;
    margin: 0 !important;
  }

  .site-topbar,
  .site-main,
  .layui-body,
  .page-panel,
  .layui-card,
  .layui-card-body,
  .layui-form,
  .layui-form-item,
  .header-bar,
  .page-actions,
  .cards-toolbar,
  .auth-card,
  .narrow-card,
  .layui-row,
  .layui-col-md3,
  .layui-col-md4,
  .layui-col-md5,
  .layui-col-md6,
  .layui-col-md7,
  .layui-col-md8,
  .layui-col-md12,
  .layui-col-lg4,
  .layui-col-lg5 {
    max-width: 100% !important;
    width: 100% !important;
    min-width: 0 !important;
  }

  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .hero-card {
    padding: 24px;
  }

  .hero-title {
    font-size: 28px;
  }

  .landing-grid,
  .landing-steps {
    grid-template-columns: 1fr;
  }

  .site-topbar .layui-container {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    gap: 10px;
  }

  .topbar-actions {
    width: auto;
    justify-content: flex-end;
    flex-wrap: nowrap;
  }

  .page-actions {
    width: 100%;
    align-items: stretch;
  }

  .landing-btn {
    width: 100%;
    min-width: 0;
  }

  .cards-toolbar .field {
    min-width: 0;
    width: 100%;
  }

  .result-modal-card {
    max-width: 100%;
  }

  .landing-actions,
  .hero-actions,
  .page-actions {
    flex-direction: column;
  }

  .auth-shell {
    padding: 20px 12px 28px;
  }

  .auth-shell .layui-container,
  .site-main .layui-container {
    padding-left: 0;
    padding-right: 0;
  }

  .auth-header,
  .auth-body {
    padding-left: 18px;
    padding-right: 18px;
  }

  .layui-layout-admin .layui-header {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: space-between;
    height: auto !important;
    padding: 12px;
    overflow: visible;
    gap: 10px;
  }

  .mobile-menu-btn {
    display: inline-flex;
    order: 1;
    flex: 0 0 42px;
  }

  .layui-layout-admin .layui-logo {
    display: block;
    position: static !important;
    width: auto !important;
    height: auto !important;
    line-height: 1.4 !important;
    margin: 0 10px 0 0;
    order: 2;
    flex: 1;
    min-width: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .layui-layout-admin .layui-layout-right {
    position: static !important;
    float: none !important;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    width: auto;
    margin: 0;
    padding: 0;
    order: 3;
    flex: 0 0 auto;
  }

  .layui-layout-admin .layui-layout-right .layui-nav-item {
    line-height: 34px;
    float: none !important;
    width: auto;
    margin: 0;
  }

  .layui-layout-admin .layui-layout-right .layui-nav-item a {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 34px;
    padding: 0 10px;
    border-radius: 9px;
    background: #f6fbfa;
    border: 1px solid #ddebe8;
    white-space: nowrap;
    font-size: 13px;
  }

  .layui-layout-admin .layui-side {
    position: fixed !important;
    left: 0 !important;
    top: 0 !important;
    bottom: 0 !important;
    width: 278px !important;
    height: 100vh !important;
    border-right: 1px solid #dfeae7;
    border-bottom: none;
    overflow: auto;
    z-index: 1001;
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    box-shadow: 18px 0 40px rgba(15, 23, 42, 0.16);
    background: linear-gradient(180deg, #fcfffe 0%, #f4fbf9 100%);
  }

  body.mobile-sidebar-open .layui-side {
    transform: translateX(0);
  }

  body.mobile-sidebar-open .mobile-sidebar-backdrop {
    display: block;
  }

  .layui-side-scroll {
    width: 100%;
    height: 100%;
    padding: 16px 14px 18px;
  }

  .layui-side-scroll::before {
    content: '柠檬题库';
    display: block;
    margin-bottom: 12px;
    padding: 4px 2px 10px;
    color: var(--primary-dark);
    font-size: 18px;
    font-weight: 700;
    border-bottom: 1px solid #e3efec;
  }

  .mobile-side-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid #e3efec;
  }

  .mobile-side-link {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    padding: 0 12px;
    border-radius: 10px;
    border: 1px solid #dce9e5;
    background: #ffffff;
    color: #2f3a3a !important;
    text-decoration: none;
    font-weight: 600;
  }

  .layui-nav-tree {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 0;
    margin: 0;
  }

  .layui-nav-tree .layui-nav-item {
    width: 100%;
    margin: 0;
  }

  .layui-nav-tree .layui-nav-item a {
    border-radius: 12px;
    border: 1px solid #e2ece9;
    background: rgba(255, 255, 255, 0.9);
    text-align: left;
    padding: 12px 14px;
    height: auto;
    line-height: 1.5;
    white-space: normal;
    font-weight: 600;
    box-shadow: 0 6px 18px rgba(15, 23, 42, 0.04);
  }

  .layui-nav-tree .layui-this > a,
  .layui-nav-tree .layui-this > a:hover {
    background: linear-gradient(135deg, #e7f7f4 0%, #f4fffd 100%);
    border-color: #b9ded7;
  }

  .layui-layout-admin .layui-body {
    padding: 12px !important;
  }

  .page-title {
    font-size: 22px;
  }

  .page-desc {
    line-height: 1.7;
  }

  .header-bar {
    align-items: flex-start;
  }

  .layui-card-body {
    padding: 16px;
  }

  .result-modal-header,
  .result-modal-body,
  .result-modal-actions {
    padding-left: 16px;
    padding-right: 16px;
  }

  .stats-grid-4 .layui-col-md3 .layui-card {
    min-height: 0;
  }

  .stat-value {
    font-size: 24px;
  }

  .chart-box {
    height: 260px;
  }

  .layui-table {
    min-width: 640px;
  }
}

@media (max-width: 520px) {
  .site-brand {
    font-size: 20px;
  }

  .hero-title {
    font-size: 24px;
  }

  .layui-nav-tree {
    grid-template-columns: 1fr;
  }

  .site-topbar .layui-container,
  .layui-layout-admin .layui-header,
  .layui-layout-admin .layui-body {
    padding-left: 10px !important;
    padding-right: 10px !important;
  }

  .layui-card,
  .auth-card,
  .result-modal-card {
    border-radius: 12px;
  }

  .layui-card-body,
  .auth-header,
  .auth-body,
  .result-modal-header,
  .result-modal-body,
  .result-modal-actions {
    padding-left: 14px !important;
    padding-right: 14px !important;
  }

  .cards-toolbar,
  .header-bar,
  .page-actions,
  .landing-actions,
  .hero-actions {
    gap: 10px;
  }

  .topbar-actions {
    flex-wrap: nowrap;
    gap: 6px;
  }

  .topbar-actions .layui-btn,
  .layui-layout-admin .layui-layout-right .layui-nav-item a {
    min-width: 0;
    padding-left: 8px;
    padding-right: 8px;
    font-size: 12px;
  }

  .result-modal-actions,
  .page-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .result-modal-actions .layui-btn,
  .page-actions .layui-btn {
    width: 100%;
    justify-content: center;
  }

  .stat-value {
    font-size: 22px;
  }

  .form-label,
  .page-desc,
  .step-desc,
  .auth-side-note,
  .hero-subtitle {
    font-size: 13px;
  }

  .chart-box {
    height: 220px;
  }

  .layui-table {
    min-width: 560px;
  }
}