@charset "UTF-8";

/* Cloud OJ adapter: the local OJ's Quiet Technology layer is the design source. */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

[hidden] {
  display: none !important;
}

.navbar-default .navbar-brand::before {
  background-image: url("/assets/brand-logo-v2.png");
}

.navbar-default .navbar-nav > li > a {
  display: flex;
  align-items: center;
}

.navbar-default .navbar-nav > li > a .nav-icon {
  width: 15px;
  height: 15px;
  flex: 0 0 15px;
  margin-right: 7px;
}

.navbar-default .navbar-nav > li > a[data-action="logout"] {
  cursor: pointer;
}

.navbar-default .hs-account-menu {
  position: relative;
}

.navbar-default .hs-account-menu > a .hs-caret {
  margin-left: 8px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1;
}

.navbar-default .hs-account-menu .dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 1100;
  min-width: 176px;
  display: none;
  padding: 7px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  box-shadow: 0 18px 50px rgba(7, 21, 33, 0.12);
}

.navbar-default .hs-account-menu.open .dropdown-menu {
  display: block;
}

.navbar-default .hs-account-menu .dropdown-menu > li > a {
  min-height: 40px;
  display: flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 8px;
  color: var(--ink);
  font-size: 13px;
}

.navbar-default .hs-account-menu .dropdown-menu > li > a:hover {
  background: var(--blue-soft);
  color: var(--blue-deep);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  margin: 0 0 22px !important;
  padding: 0 !important;
  list-style: none;
}

.breadcrumb > li {
  display: inline-flex;
  align-items: center;
}

.breadcrumb > li + li::before {
  content: "/" !important;
  padding: 0 9px !important;
  color: var(--faint);
}

.navbar-toggle .icon-bar {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px auto;
  border-radius: 2px;
  background: var(--ink);
}

.list-section > .list-group > .list-group-item.active .activity-name::before,
.list-section > .list-group > .list-group-item.active .list-group-item-heading::before {
  content: none !important;
}

.hs-page-home .wrap > .container {
  padding-top: 34px;
}

.hs-lists-panel {
  overflow: hidden;
  border-radius: var(--radius-lg) !important;
}

.hs-lists-panel .panel-heading {
  padding: 22px 26px !important;
  font-size: 18px !important;
}

.hs-lists-panel .panel-body {
  padding: 24px 26px 30px !important;
}

.hs-panel-count {
  margin-left: 7px;
  color: var(--faint);
  font-family: var(--font-number);
  font-size: 13px;
  font-weight: 500;
}

.hs-tag-count {
  margin-left: 4px;
  color: var(--faint);
  font-family: var(--font-number);
  font-size: 11px;
}

.hs-list-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.hs-list-types {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.hs-list-type {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0 15px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  color: var(--muted);
  font-size: 12px;
  font-weight: 550;
}

.hs-list-type span {
  color: var(--faint);
  font-family: var(--font-number);
  font-size: 10px;
}

.hs-list-type.is-active {
  border-color: rgba(8, 120, 249, 0.18);
  background: var(--blue-soft);
  color: var(--blue-deep);
  font-weight: 650;
}

.hs-list-search {
  width: min(620px, 100%);
  display: flex;
  gap: 8px;
}

.hs-list-search .form-control {
  flex: 1 1 auto;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--surface-soft);
}

.hs-list-search .btn {
  min-width: 78px;
  min-height: 42px;
}

.hs-list-table {
  margin: 0 !important;
}

.hs-list-table > thead > tr > th {
  padding: 12px 10px !important;
  border-bottom: 1px solid var(--line) !important;
  color: var(--faint) !important;
  font-size: 10px;
  font-weight: 550;
  text-transform: uppercase;
}

.hs-list-table > tbody > tr > td {
  padding: 13px 10px !important;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  vertical-align: middle;
}

.hs-list-table > tbody > tr > td:nth-child(2) a {
  color: var(--ink);
  font-size: 13px;
  font-weight: 600;
}

.hs-lock-label {
  color: var(--danger);
  font-size: 11px;
}

.hs-list-detail {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 20px;
  align-items: start;
}

.hs-list-detail > main,
.hs-list-detail > aside {
  min-width: 0;
}

.hs-list-head {
  overflow: hidden;
  margin-bottom: 16px;
  border-radius: var(--radius-lg) !important;
}

.hs-list-head .panel-body {
  padding: 28px 30px !important;
}

.hs-list-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 13px;
  color: var(--faint);
  font-size: 11px;
}

.hs-list-head h1 {
  margin: 14px 0 8px;
  color: var(--ink);
  font-size: clamp(30px, 4vw, 48px);
  font-weight: 680;
  letter-spacing: -0.045em;
}

.hs-list-head p {
  max-width: 68ch;
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

.hs-list-section {
  overflow: hidden;
  margin-bottom: 14px;
  border-radius: var(--radius-md) !important;
}

.hs-list-section > .panel-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 20px;
  background: var(--surface-soft);
  color: var(--ink);
}

.hs-list-section > .panel-heading span {
  color: var(--faint);
  font-size: 11px;
}

.hs-list-section .panel-body {
  padding: 0 20px 8px !important;
}

.hs-list-problem-table {
  margin: 0 !important;
}

.hs-list-problem-table > thead > tr > th {
  padding: 10px !important;
  color: var(--faint) !important;
  font-size: 10px;
  font-weight: 550;
}

.hs-list-problem-table > tbody > tr > td {
  padding: 11px 10px !important;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
}

.hs-list-problem-table > tbody > tr:last-child > td {
  border-bottom: 0;
}

.hs-list-problem-table td:nth-child(1) {
  width: 74px;
  font-family: var(--font-number);
}

.hs-list-problem-table td:nth-child(1) a {
  color: var(--faint);
}

.hs-list-problem-table td:nth-child(2) a {
  color: var(--ink);
  font-weight: 550;
}

.hs-list-toc {
  position: sticky;
  top: 96px;
  overflow: hidden;
  border-radius: var(--radius-md) !important;
}

.hs-list-toc .panel-body {
  display: grid;
  gap: 2px;
  padding: 10px !important;
}

.hs-list-toc a {
  padding: 8px 10px;
  border-radius: 7px;
  color: var(--muted);
  font-size: 12px;
}

.hs-list-toc a:hover {
  background: var(--blue-soft);
  color: var(--blue-deep);
}

.hs-list-detail aside > .panel {
  margin-bottom: 14px;
  overflow: hidden;
  border-radius: var(--radius-md) !important;
}

.hs-list-detail aside > .panel > .panel-body {
  padding: 16px !important;
}

.hs-delete-list {
  margin-top: 10px;
  color: var(--danger) !important;
}

.hs-page-group .hs-section-intro {
  padding-top: 6px;
}

.group-columns .card {
  height: 100%;
  cursor: pointer;
}

.group-columns .card:focus-visible {
  outline: 2px solid rgba(8, 120, 249, 0.62);
  outline-offset: 3px;
}

.group-columns .card-header {
  display: flex;
  align-items: center;
  gap: 8px;
}

.group-columns .card-header .nav-icon {
  width: 17px;
  height: 17px;
  flex: 0 0 17px;
  color: var(--blue);
}

.group-columns .card-text {
  min-height: 2.8em;
}

.hs-group-summary {
  margin: 10px 0 2px;
  color: var(--faint);
  font-size: 12px;
  text-align: right;
}

.group-filters {
  width: 100%;
  margin: 0 0 20px !important;
  padding: 0 !important;
  border: 0;
  border-radius: 0;
  background: transparent;
}

.group-filters form {
  width: 100%;
}

.group-filters .gf-fields {
  display: grid !important;
  grid-template-columns: repeat(5, minmax(120px, 1fr)) auto;
  flex-wrap: nowrap !important;
  align-items: center !important;
  justify-content: flex-start !important;
  gap: 8px !important;
}

.group-filters .gf-field {
  flex: none !important;
  max-width: none !important;
  min-width: 0 !important;
}

.group-filters .form-control {
  width: 100% !important;
  min-height: 40px;
  padding: 0 14px !important;
  border: 1px solid #d8dee7 !important;
  border-radius: 4px !important;
  background: var(--surface) !important;
  color: var(--ink);
  box-shadow: none !important;
}

.group-filters .gf-actions {
  flex: 0 0 auto;
  display: flex;
  gap: 6px;
}

.group-filters .gf-actions .btn {
  min-width: 72px;
  min-height: 40px;
  padding: 0 15px;
  border-radius: 10px !important;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition:
    transform 160ms ease,
    box-shadow 180ms ease,
    border-color 180ms ease,
    background-color 180ms ease;
}

.group-filters .gf-actions .btn-primary {
  border: 1px solid #0b69d4 !important;
  background: #0d73e8 !important;
  color: #fff !important;
  box-shadow: 0 1px 2px rgba(0, 87, 180, 0.12);
}

.group-filters .gf-actions .btn-primary:hover,
.group-filters .gf-actions .btn-primary:focus {
  border-color: #0862c8 !important;
  background: #086ad9 !important;
  color: #fff !important;
  box-shadow: 0 2px 5px rgba(0, 87, 180, 0.16);
}

.group-filters .gf-actions .btn-primary:active {
  background: #075fca !important;
  box-shadow: none;
  transform: translateY(1px);
}

.group-filters .gf-actions .btn-default {
  border: 1px solid #d8dde5 !important;
  background: #fff !important;
  color: #202124 !important;
  box-shadow: none;
}

.group-filters .gf-actions .btn-default:hover,
.group-filters .gf-actions .btn-default:focus {
  border-color: #b8c1cd !important;
  background: #f8fafc !important;
  color: #202124 !important;
  box-shadow: none;
}

.group-filters .gf-actions .btn-default:active {
  background: #f2f5f8 !important;
  transform: translateY(1px);
}

.hs-group-tabs {
  display: flex !important;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 18px !important;
  padding: 0 0 0 !important;
  border: 0 !important;
  border-bottom: 2px solid #2f80ed !important;
  list-style: none !important;
}

.hs-group-tabs > li {
  display: block !important;
  list-style: none !important;
}

.hs-group-tabs > li::marker,
.hs-group-tabs > li > a::marker {
  content: "" !important;
}

.hs-group-tabs > li > a {
  min-height: 48px;
  display: flex;
  align-items: center;
  padding: 0 20px !important;
  border: 0 !important;
  border-radius: 6px 6px 0 0 !important;
  background: transparent !important;
  color: #58708e !important;
  font-size: 15px;
}

.hs-group-tabs.nav-tabs.group-index.nav > li > a {
  min-height: 48px;
  padding: 0 20px !important;
  border: 0 !important;
  border-radius: 6px 6px 0 0 !important;
  background: transparent !important;
  color: #58708e !important;
  font-size: 15px;
  line-height: 1.4 !important;
}

.hs-group-tabs > li > a::before,
.hs-group-tabs > li > a::after {
  content: none !important;
}

.hs-group-tabs > li.active > a {
  border-color: transparent !important;
  background: #0f70e8 !important;
  color: #fff !important;
  font-weight: 650;
}

.hs-group-tabs.nav-tabs.group-index.nav > li.active > a,
.hs-group-tabs.nav-tabs.group-index.nav > li.active > a:hover,
.hs-group-tabs.nav-tabs.group-index.nav > li.active > a:focus {
  background: #0f70e8 !important;
  color: #fff !important;
  font-weight: 650;
}

.hs-group-tabs > li.pull-right {
  margin-left: auto;
  float: none !important;
}

.hs-group-tabs > li.pull-right > a {
  padding-right: 0 !important;
  color: #176ec9 !important;
  font-size: 14px;
}

.hs-group-tabs.nav-tabs.group-index.nav > li.pull-right > a {
  min-height: 46px;
  padding-right: 0 !important;
  color: #176ec9 !important;
  background: transparent !important;
}

.hs-group-card-foot {
  min-height: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.hs-group-detail {
  display: grid !important;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.hs-group-detail > [class*="col-"] {
  width: auto !important;
  float: none !important;
  padding: 0 !important;
}

.hs-group-detail aside > .panel {
  overflow: hidden;
  border-radius: var(--radius-md);
}

.hs-group-detail aside h2 {
  margin: 0 0 16px;
  font-size: 24px;
  font-weight: 650;
  letter-spacing: -0.03em;
}

.hs-group-info-list {
  display: grid;
  gap: 0;
  margin: 0;
}

.hs-group-info-list > div {
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}

.hs-group-info-list > div:last-child {
  border-bottom: 0;
}

.hs-group-info-list dt {
  color: var(--faint);
  font-size: 11px;
  font-weight: 500;
}

.hs-group-info-list dd {
  margin: 3px 0 0;
  color: var(--ink);
  font-size: 13px;
  line-height: 1.7;
}

.hs-group-main > .panel,
.hs-group-main > .hs-inline-form {
  margin: 0 0 18px !important;
  border-radius: var(--radius-md) !important;
}

.hs-group-panel-head {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 20px !important;
}

.hs-group-panel-head > div:first-child {
  display: flex;
  flex-direction: column;
}

.hs-group-panel-head > div:first-child span {
  color: var(--faint);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hs-group-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.hs-group-actions .btn {
  min-height: 38px;
}

.hs-group-main > .panel > .panel-body {
  padding: 18px 20px !important;
}

.hs-group-table {
  margin: 0 !important;
}

.hs-group-table > thead > tr > th {
  padding: 11px 10px !important;
  border-bottom: 1px solid var(--line) !important;
  color: var(--faint) !important;
  font-size: 10px;
  font-weight: 550;
  text-transform: uppercase;
}

.hs-group-table > tbody > tr > td {
  padding: 12px 10px !important;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  vertical-align: middle;
}

.hs-group-table > tbody > tr:last-child > td {
  border-bottom: 0;
}

.hs-group-table a {
  color: var(--ink);
  font-weight: 550;
}

.hs-assignment-status {
  display: inline-flex;
  min-height: 24px;
  align-items: center;
  padding: 2px 8px;
  border-radius: 7px;
  background: var(--blue-soft);
  color: var(--blue-deep);
  font-size: 10px;
  font-weight: 600;
}

.hs-inline-form {
  margin-top: 14px;
  padding: 0 !important;
  border: 1px solid var(--line) !important;
  border-radius: 12px;
  background: var(--surface-soft);
}

.hs-inline-form > summary {
  min-height: 44px;
  display: flex;
  align-items: center;
  padding: 0 14px;
  color: var(--blue-deep);
  font-size: 12px;
  font-weight: 650;
  cursor: pointer;
}

.hs-inline-form > form {
  padding: 4px 14px 16px;
}

.hs-inline-form .field {
  margin-bottom: 12px;
}

.hs-inline-form .field > label {
  display: block;
  margin-bottom: 6px;
  color: var(--ink);
  font-size: 11px;
  font-weight: 650;
}

.hs-inline-form .input,
.hs-group-create-panel .input {
  width: 100%;
  min-height: 44px;
  padding: 9px 11px;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  background: var(--surface);
  color: var(--ink);
}

.hs-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.hs-form-grid .field {
  margin: 0;
}

.hs-form-span-2 {
  grid-column: 1 / -1;
}

.hs-group-create-panel {
  border-radius: var(--radius-lg) !important;
}

.hs-group-create-panel .panel-body {
  padding: 26px !important;
}

.hs-group-create-panel .field {
  margin-bottom: 0;
}

.hs-group-create-panel .field > label {
  display: block;
  margin-bottom: 7px;
  color: var(--ink);
  font-size: 12px;
  font-weight: 650;
}

.hs-group-create-panel form > .btn {
  margin-top: 20px;
}

.hs-group-quota,
.hs-field-hint {
  margin-left: 10px;
  color: var(--faint);
  font-size: 11px;
}

.hs-table-panel,
.hs-group-table-panel {
  border-radius: var(--radius-md) !important;
}

.hs-group-table-panel .panel-body {
  padding: 12px 18px 18px !important;
}

.hs-article-list {
  display: grid;
  gap: 9px;
  margin-bottom: 12px;
}

.hs-article-list article {
  padding: 13px 14px;
  border-radius: 9px;
  background: var(--surface-soft);
}

.hs-article-list article a {
  color: var(--ink);
  font-size: 13px;
  font-weight: 600;
}

.hs-article-list article p {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 11px;
}

.hs-coin-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 140px auto;
  gap: 10px;
  align-items: end;
  margin-bottom: 16px;
}

.hs-coin-form .field {
  margin: 0;
}

.hs-coin-form .field > label {
  display: block;
  margin-bottom: 6px;
  color: var(--ink);
  font-size: 11px;
  font-weight: 650;
}

.hs-award-form {
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.hs-small-empty {
  padding: 24px 12px !important;
}

.hs-mini-btn {
  min-height: 30px !important;
  padding: 3px 9px !important;
  font-size: 10px !important;
}

.hs-group-stat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.hs-group-stat-grid > .panel {
  padding: 22px;
}

.hs-group-stat-grid strong {
  display: block;
  color: var(--blue-deep);
  font-family: var(--font-number);
  font-size: 34px;
  line-height: 1;
}

.hs-group-stat-grid span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 12px;
}

.hs-ranking-table .hs-rank-number {
  min-width: 30px;
  min-height: 30px;
  display: inline-grid;
  place-items: center;
  border-radius: 9px;
  background: var(--surface-soft);
  color: var(--blue-deep);
  font-family: var(--font-number);
  font-weight: 650;
}

.hs-ranking-table tbody tr:nth-child(1) .hs-rank-number {
  background: var(--blue);
  color: #fff;
}

.hs-ranking-table tr.hs-current-user {
  background: rgba(8, 120, 249, 0.035);
}

.hs-cloud-list-tools {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
}

.hs-sort-select {
  min-height: 38px;
  padding: 0 34px 0 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background-color: var(--surface);
  color: var(--muted);
  font-size: 12px;
}

.hs-cloud-list-bottom {
  padding: 0 0 20px;
}

.hs-cloud-list-bottom .pagination {
  margin: 0 !important;
}

.hs-check {
  color: var(--success);
  font-weight: 700;
}

.problem-index-list td .label {
  vertical-align: middle;
}

.hs-problem-link {
  color: var(--ink);
  font-weight: 580;
}

.hs-problem-link:hover {
  color: var(--blue);
}

.hs-empty-hint {
  display: block;
  margin-top: 7px;
  color: var(--faint);
  font-size: 12px;
}

.hs-sidebar-news .blog-post {
  cursor: pointer;
}

.hs-sidebar-news .panel-body {
  padding-bottom: 12px !important;
}

.hs-news-more {
  width: 100%;
  margin-top: 8px;
}

.hs-cloud-tag-list a {
  cursor: pointer;
}

.hs-page-problem .problem-detail {
  margin: 0;
}

.hs-problem-title {
  grid-column: 1 / -1;
}

.hs-problem-title h3 {
  margin-bottom: 0;
}

.hs-problem-copy {
  position: absolute;
  top: 9px;
  right: 10px;
  min-height: 30px;
  padding: 0 9px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.07);
  color: rgba(255, 255, 255, 0.72);
  font-size: 11px;
}

.sample-test .input,
.sample-test .output {
  position: relative;
}

.sample-test .input h4,
.sample-test .output h4 {
  padding-right: 58px;
}

.hs-problem-empty {
  color: var(--muted);
}

.problem-info .hs-status-good {
  color: var(--success) !important;
}

.problem-info .hs-status-idle {
  color: var(--faint) !important;
}

.problem-info .hs-prev-next {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 12px;
}

.problem-info .hs-prev-next .btn {
  width: 100%;
  margin: 0;
}

.hs-page-status .problem-detail {
  display: block;
}

.hs-status-table-wrap {
  width: 100% !important;
  float: none !important;
  padding: 8px 0 0 !important;
}

.hs-status-table {
  margin-bottom: 0 !important;
}

.hs-status-table > thead > tr > th {
  padding: 12px 14px !important;
  border-bottom: 1px solid var(--line) !important;
  color: var(--faint);
  font-size: 11px;
  font-weight: 550;
}

.hs-status-table > tbody > tr > td {
  padding: 15px 14px !important;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}

.hs-status-table > tbody > tr:last-child > td {
  border-bottom: 0;
}

.hs-status-result {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 2px 9px;
  border-radius: 8px;
  background: var(--blue-soft);
  color: var(--blue-deep);
  font-size: 11px;
  font-weight: 650;
}

.hs-status-result.is-accepted {
  background: var(--success-soft);
  color: var(--success);
}

.hs-status-result.is-wrong,
.hs-status-result.is-error {
  background: var(--danger-soft);
  color: var(--danger);
}

.hs-status-result.is-pending {
  background: var(--warning-soft);
  color: var(--warning);
}

.hs-status-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 18px;
}

.hs-page-auth .site-login .left {
  min-height: 0;
}

.hs-page-auth .hs-login-field {
  position: relative;
}

.hs-page-auth .hs-login-field .input-group {
  width: 100%;
}

.hs-page-auth .hs-login-field .form-control {
  width: 100%;
  min-height: 50px;
  padding-left: 44px !important;
  border: 1px solid var(--line-strong) !important;
  border-radius: 10px !important;
  background: var(--surface-soft) !important;
}

.hs-login-icon {
  position: absolute;
  z-index: 2;
  top: 50%;
  left: 15px;
  width: 17px;
  height: 17px;
  color: var(--muted);
  transform: translateY(-50%);
  pointer-events: none;
}

.hs-page-auth .hs-login-check {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-top: 14px;
  color: var(--muted);
  font-size: 12px;
}

.hs-page-auth .hs-login-check input {
  margin: 0;
}

.hs-page-auth .hs-login-note {
  margin-top: 12px;
  color: var(--faint);
  font-size: 11px;
  line-height: 1.65;
}

.hs-auth-description {
  margin: -12px 0 24px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}

.hs-auth-links {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 15px;
  font-size: 12px;
}

.hs-auth-links a {
  color: var(--blue);
}

.hs-auth-second-button {
  margin-top: 10px !important;
}

.hs-form-error {
  margin-top: 10px;
  padding: 9px 11px;
  border-radius: 8px;
  background: var(--danger-soft);
  color: var(--danger);
  font-size: 12px;
  line-height: 1.55;
}

.hs-captcha-row {
  display: grid;
  grid-template-columns: 108px 84px minmax(0, 1fr);
  gap: 8px;
  align-items: stretch;
}

.hs-captcha-row .btn,
.hs-captcha-row .form-control {
  min-height: 50px;
}

.hs-captcha-image {
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background:
    repeating-linear-gradient(24deg, rgba(8, 120, 249, 0.08) 0 1px, transparent 1px 8px),
    var(--surface-soft);
  color: var(--blue-deep);
  font-family: "Cascadia Code", Consolas, monospace;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-indent: 0.16em;
  user-select: none;
}

.hs-page-auth .form-signin > .btn {
  width: 100%;
  min-height: 50px;
  display: block;
}

.hs-auth-logged {
  width: 100%;
}

.hs-auth-logged strong {
  color: var(--ink);
}

.hs-tabbar .hs-tab-icon {
  width: 19px;
  height: 19px;
  display: grid;
  place-items: center;
}

.hs-tabbar .hs-tab-icon svg {
  width: 19px;
  height: 19px;
}

.hs-news-mask {
  display: flex;
  opacity: 0;
}

.hs-news-mask.is-open {
  opacity: 1;
}

.hs-news-entry {
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.hs-news-entry:last-child {
  border-bottom: 0;
}

.hs-news-entry h2 {
  margin: 7px 0 8px !important;
  color: var(--ink);
  font-size: 21px !important;
}

.hs-news-entry p {
  margin: 0 !important;
  color: var(--muted);
  font-size: 14px !important;
  line-height: 1.8 !important;
}

.hs-news-entry-meta {
  color: var(--blue) !important;
  font-size: 11px !important;
  font-weight: 650;
  letter-spacing: 0.05em;
}

.hs-drawer-problem-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 18px;
}

.hs-drawer-preview {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.hs-drawer-preview p {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 13px;
}

.hs-drawer-preview .btn {
  width: 100%;
}

.cloud-submit-modal {
  width: min(820px, calc(100% - 32px));
}

.cloud-submit-modal .modal-head {
  border-bottom: 1px solid var(--line);
}

.cloud-submit-modal .modal-head h2 {
  color: var(--ink);
}

.cloud-submit-modal .field {
  margin-bottom: 16px;
}

.cloud-submit-modal .field label {
  display: block;
  margin-bottom: 7px;
  color: var(--ink);
  font-size: 12px;
  font-weight: 650;
}

.cloud-submit-modal .input {
  width: 100%;
  min-height: 48px;
  padding: 10px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: var(--surface-soft);
  color: var(--ink);
}

.cloud-submit-modal .editor {
  min-height: 330px;
  border: 0;
  background: var(--ink);
  color: rgba(255, 255, 255, 0.9);
  font: 13px/1.7 "Cascadia Code", "SFMono-Regular", Consolas, monospace;
}

.cloud-submit-modal .judge-notice {
  margin: 14px 0;
  padding: 12px 14px;
  border: 1px solid rgba(8, 120, 249, 0.14);
  border-radius: 10px;
  background: var(--blue-soft);
  color: var(--blue-deep);
  font-size: 12px;
  line-height: 1.7;
}

.cloud-submit-modal .judge-result {
  display: grid;
  gap: 8px;
  margin-top: 15px;
}

.cloud-submit-modal .case-row {
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface-soft);
  color: var(--muted);
  font-size: 12px;
}

.cloud-submit-modal .case-row pre {
  margin: 8px 0 0;
  padding: 12px;
  border-radius: 8px;
  background: var(--ink);
}

.toast {
  background: var(--ink);
  color: #fff;
}

@media (min-width: 992px) {
  .navbar-default .navbar-toggle {
    display: none !important;
  }

  .hs-tabbar,
  .hs-scroll-top {
    display: none !important;
  }
}

@media (max-width: 991px) {
  .navbar-default .navbar-toggle {
    display: block;
  }

  .navbar-default .navbar-nav {
    margin-top: 10px;
  }

  .navbar-default .navbar-nav > li {
    float: none;
  }

  .navbar-default .navbar-nav > li > a {
    min-height: 46px;
    padding: 10px 12px !important;
  }

  .navbar-default .hs-account-menu {
    position: static;
  }

  .navbar-default .hs-account-menu .dropdown-menu {
    position: static;
    display: none;
    min-width: 0;
    margin: 4px 0 8px;
    padding: 5px;
    border: 0;
    background: var(--surface-soft);
    box-shadow: none;
  }

  .navbar-default .hs-account-menu.open .dropdown-menu {
    display: block;
  }

  .hs-page-home .wrap > .container {
    padding-top: 18px;
  }

  .hs-cloud-list-tools {
    display: none;
  }

  .list-head > [class*="col-"]:last-child {
    width: 100% !important;
  }

  .list-head .pagination {
    overflow-x: auto;
  }

  .hs-cloud-list-bottom {
    padding-bottom: 8px;
  }

  .hs-page-status .problem-detail {
    padding: 24px 20px !important;
  }

  .hs-status-table > thead {
    display: none;
  }

  .hs-status-table,
  .hs-status-table tbody,
  .hs-status-table tr,
  .hs-status-table td {
    display: block;
  }

  .hs-status-table tr {
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
  }

  .hs-status-table tr:last-child {
    border-bottom: 0;
  }

  .hs-status-table td {
    padding: 2px 0 !important;
    border: 0 !important;
  }

  .hs-status-table td::before {
    display: inline-block;
    min-width: 5.1em;
    color: var(--faint);
    font-size: 11px;
  }

  .hs-status-table td:nth-child(1)::before { content: "提交编号"; }
  .hs-status-table td:nth-child(2)::before { content: "题目"; }
  .hs-status-table td:nth-child(3)::before { content: "语言"; }
  .hs-status-table td:nth-child(4)::before { content: "结果"; }
  .hs-status-table td:nth-child(5)::before { content: "测试点"; }
  .hs-status-table td:nth-child(6)::before { content: "提交时间"; }

  .hs-page-auth .hs-auth-visual {
    min-height: 0;
  }

  .hs-group-summary {
    text-align: left;
  }

  .cloud-submit-modal .modal-body {
    max-height: calc(100vh - 150px);
    overflow-y: auto;
  }

  .hs-group-tabs {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 4px !important;
    scrollbar-width: none;
  }

  .hs-group-tabs::-webkit-scrollbar {
    display: none;
  }

  .hs-group-tabs > li {
    flex: 0 0 auto;
  }

  .hs-group-tabs > li.pull-right {
    margin-left: 0;
  }

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

  .group-filters .gf-actions {
    grid-column: 1 / -1;
    justify-content: flex-end;
  }

  .hs-group-detail {
    grid-template-columns: 1fr;
  }

  .hs-group-main {
    order: 0;
  }

  .hs-group-detail aside {
    order: 1;
  }

  .hs-group-panel-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .hs-form-grid {
    grid-template-columns: 1fr;
  }

  .hs-form-span-2 {
    grid-column: auto;
  }

  .hs-coin-form {
    grid-template-columns: 1fr;
  }

  .hs-coin-form .btn {
    width: 100%;
  }

  .hs-group-stat-grid {
    grid-template-columns: 1fr;
  }

  .hs-list-toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .hs-list-types {
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .hs-list-types::-webkit-scrollbar {
    display: none;
  }

  .hs-list-type {
    flex: 0 0 auto;
  }

  .hs-list-toolbar > .btn {
    width: 100%;
  }

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

  .hs-list-toc {
    position: static;
  }

  .hs-list-detail > aside {
    order: 1;
  }
}

@media (max-width: 540px) {
  .hs-page-auth .hs-login-field .form-control {
    padding-left: 42px !important;
  }

  .hs-captcha-row {
    grid-template-columns: 1fr 88px;
  }

  .hs-captcha-row .form-control {
    grid-column: 1 / -1;
  }

  .activity-header {
    padding: 26px 22px !important;
  }

  .hs-problem-title h3 {
    font-size: clamp(32px, 9vw, 44px) !important;
  }

  .hs-lists-panel .panel-body {
    padding: 20px !important;
  }

  .hs-list-search {
    flex-direction: column;
  }

  .hs-list-search .btn {
    width: 100%;
  }

  .group-filters {
    width: 100%;
  }

  .group-filters .gf-fields {
    grid-template-columns: 1fr !important;
  }

  .group-filters .gf-field {
    flex-basis: 100% !important;
  }

  .group-filters .gf-actions {
    width: 100%;
    grid-column: auto;
  }

  .group-filters .gf-actions .btn {
    flex: 1 1 0;
  }
}

/* Apple-inspired tech-blue top navigation */
nav.navbar-default.navbar {
  position: sticky;
  top: 0;
  z-index: 1100;
  min-height: 76px;
  border: 0 !important;
  border-bottom: 1px solid rgba(0, 113, 227, 0.1) !important;
  background: #d9ebff !important;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.9) inset,
    0 8px 30px rgba(0, 91, 181, 0.045);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

nav.navbar-default.navbar .container {
  min-height: 75px;
}

nav.navbar-default.navbar .navbar-brand {
  color: #1d1d1f !important;
}

nav.navbar-default.navbar .navbar-brand::before {
  filter: saturate(1.08) contrast(1.03);
}

nav.navbar-default.navbar .navbar-nav {
  align-items: center;
}

nav.navbar-default.navbar .navbar-nav > li {
  display: flex;
  align-items: stretch;
  float: none !important;
}

nav.navbar-default.navbar .navbar-nav > li > a {
  position: relative;
  min-height: 42px;
  display: flex;
  align-self: center;
  align-items: center;
  gap: 7px;
  margin: 0 1px;
  padding: 0 13px !important;
  border-radius: 10px;
  color: #53647a !important;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Microsoft YaHei", sans-serif !important;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: -0.005em;
  line-height: 42px !important;
  transition:
    color 180ms ease,
    background-color 180ms ease,
    box-shadow 180ms ease;
}

nav.navbar-default.navbar .navbar-nav > li > a .nav-icon {
  width: 16px;
  height: 16px;
  flex-basis: 16px;
  margin-right: 0;
  color: #0071e3;
  opacity: 0.78;
  transition: opacity 180ms ease, transform 180ms ease;
}

nav.navbar-default.navbar .navbar-nav > li > a:hover,
nav.navbar-default.navbar .navbar-nav > li > a:focus,
nav.navbar-default.navbar .navbar-nav > li.open > a {
  background: rgba(0, 113, 227, 0.065) !important;
  color: #005bb5 !important;
}

nav.navbar-default.navbar .navbar-nav > li > a:hover .nav-icon,
nav.navbar-default.navbar .navbar-nav > li > a:focus .nav-icon {
  opacity: 1;
  transform: translateY(-1px);
}

nav.navbar-default.navbar .navbar-nav > li.active > a {
  background: transparent !important;
  color: #0071e3 !important;
  font-weight: 650;
}

nav.navbar-default.navbar .navbar-nav > li.active > a .nav-icon {
  color: #0071e3;
  opacity: 1;
}

nav.navbar-default.navbar .navbar-nav > li.active > a::after {
  content: "";
  position: absolute;
  right: 12px;
  bottom: 3px;
  left: 12px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, #52b9ff, #0071e3);
  box-shadow: 0 1px 5px rgba(0, 113, 227, 0.24);
}

nav.navbar-default.navbar .hs-account-menu > a .hs-caret {
  color: #6e7d91;
}

nav.navbar-default.navbar .hs-account-menu .dropdown-menu {
  border-color: rgba(0, 113, 227, 0.12);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow:
    0 20px 60px rgba(0, 60, 120, 0.14),
    0 1px 0 rgba(255, 255, 255, 0.9) inset;
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  backdrop-filter: blur(20px) saturate(160%);
}

nav.navbar-default.navbar .hs-account-menu .dropdown-menu > li > a {
  color: #405168;
}

nav.navbar-default.navbar .hs-account-menu .dropdown-menu > li > a:hover {
  background: rgba(0, 113, 227, 0.07);
  color: #006edb;
}

nav.navbar-default.navbar .navbar-toggle {
  border-color: rgba(0, 113, 227, 0.16) !important;
  background: rgba(255, 255, 255, 0.72) !important;
}

nav.navbar-default.navbar .navbar-toggle .icon-bar {
  background: #0071e3 !important;
}

@media (max-width: 991px) {
  nav.navbar-default.navbar {
    min-height: 70px;
  }

  nav.navbar-default.navbar .navbar-collapse {
    margin-top: 8px;
    padding: 8px !important;
    border: 1px solid rgba(0, 113, 227, 0.1) !important;
    border-radius: 16px;
    background: rgba(250, 253, 255, 0.97);
    box-shadow: 0 18px 50px rgba(0, 65, 125, 0.12);
  }

  nav.navbar-default.navbar .navbar-nav {
    display: block;
  }

  nav.navbar-default.navbar .navbar-nav > li {
    display: block;
  }

  nav.navbar-default.navbar .navbar-nav > li > a {
    min-height: 46px;
    padding: 0 12px !important;
    border-radius: 10px;
    line-height: 46px !important;
  }

  nav.navbar-default.navbar .navbar-nav > li.active > a {
    background: rgba(0, 113, 227, 0.075) !important;
  }

  nav.navbar-default.navbar .navbar-nav > li.active > a::after {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  nav.navbar-default.navbar .navbar-nav > li > a,
  nav.navbar-default.navbar .navbar-nav > li > a .nav-icon {
    transition-duration: 0.01ms !important;
  }
}

/* Shared action buttons: the search button is the reference style. */
.btn-primary,
.btn-success,
.btn-info,
.btn-blue,
.btn-blue-radius-3 {
  min-height: 40px;
  border: 1px solid #0b69d4 !important;
  border-radius: 10px !important;
  background: #0d73e8 !important;
  color: #fff !important;
  box-shadow: 0 1px 2px rgba(0, 87, 180, 0.12);
  font-weight: 600;
  transition:
    background-color 160ms ease,
    box-shadow 160ms ease,
    transform 120ms ease;
}

.btn-primary:hover,
.btn-primary:focus,
.btn-success:hover,
.btn-success:focus,
.btn-info:hover,
.btn-info:focus,
.btn-blue:hover,
.btn-blue:focus,
.btn-blue-radius-3:hover,
.btn-blue-radius-3:focus {
  border-color: #0862c8 !important;
  background: #086ad9 !important;
  color: #fff !important;
  box-shadow: 0 2px 5px rgba(0, 87, 180, 0.16);
}

.btn-primary:active,
.btn-success:active,
.btn-info:active,
.btn-blue:active,
.btn-blue-radius-3:active {
  background: #075fca !important;
  box-shadow: none;
  transform: translateY(1px);
}

.btn-default,
.btn-secondary {
  min-height: 40px;
  border: 1px solid #d8dde5 !important;
  border-radius: 10px !important;
  background: #fff !important;
  color: #202124 !important;
  box-shadow: none;
  font-weight: 500;
}

.btn-default:hover,
.btn-default:focus,
.btn-secondary:hover,
.btn-secondary:focus {
  border-color: #b8c1cd !important;
  background: #f8fafc !important;
  color: #202124 !important;
  box-shadow: none;
}

.btn-default:active,
.btn-secondary:active {
  background: #f2f5f8 !important;
  transform: translateY(1px);
}

.hs-delete-list {
  color: var(--danger) !important;
}