.ic {
  width: 15px;
  height: 15px;
  display: inline-block;
  vertical-align: -2px;
  fill: currentColor;
  color: currentColor;
}

.ic-fb {
  color: var(--amber);
}

.arc-filters {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 28px 0;
  max-width: 560px;
}

.arc-filter-input,
.arc-filter-select {
  height: 34px;
  padding: 0 10px;
  border-radius: 8px;
  border: 1px solid var(--steel);
  background: var(--bg1);
  color: var(--text);
  font-family: var(--body);
  font-size: 12.5px;
  outline: none;
}

.arc-filter-input {
  flex: 1;
  min-width: 0;
}

.arc-filter-select {
  flex: 0 0 auto;
  width: auto;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
}

.arc-filter-input::placeholder {
  color: var(--mut);
}

.arc-filter-input:focus,
.arc-filter-select:focus {
  border-color: var(--amber);
}

.arc-year-group {
  margin-bottom: 44px;
}

.arc-year {
  font-family: var(--disp);
  font-size: 52px;
  font-weight: 700;
  color: var(--cream);
  margin: 0 0 18px 0;
  letter-spacing: -0.01em;
}

.arc-cards {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.arc-card {
  position: relative;
  display: flex;
  flex: 0 0 auto;
  flex-direction: column;
  gap: 8px;
  width: 280px;
  padding: 20px 24px 46px 24px;
  border-radius: 14px;
  border: 1px solid var(--steel);
  background: var(--steel-soft);
  text-decoration: none;
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.arc-card:hover {
  transform: translateY(-4px);
  border-color: var(--amber);
  background: var(--amber-soft);
}

.arc-card-name {
  font-family: var(--disp);
  font-size: 28px;
  font-weight: 600;
  color: var(--cream);
  position: relative;
  z-index: 1;
}

.arc-card-mode {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--mut);
  position: relative;
  z-index: 1;
}

.arc-card-chart {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 50%;
  z-index: 0;
}

.arc-card-chart polyline {
  fill: none;
  stroke: var(--amber);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.55;
  stroke-dasharray: 6 10;
  animation: arc-chart-flow 3s linear infinite;
}

@keyframes arc-chart-flow {
  to {
    stroke-dashoffset: -160;
  }
}

.arc-empty {
  color: var(--mut);
}

.arc-show-head {
  margin-bottom: 24px;
}

.arc-kick {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--amber);
  border: 1px solid var(--steel);
  border-radius: 999px;
  padding: 4px 12px;
  margin-bottom: 12px;
}

.ex-vis {
  margin: 24px 0;
}

#archBoard {
  width: 100%;
  height: 100%;
  display: block;
  cursor: default;
}

.arc-tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--steel);
  margin: 32px 0 28px 0;
}

.arc-tab {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--mut);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 10px 18px;
  cursor: pointer;
  transition: color 0.2s ease;
}

.arc-tab:hover {
  color: var(--cream);
}

.arc-tab.active {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

.arc-panel {
  display: none;
}

.arc-panel.active {
  display: block;
}

.arc-about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  margin-bottom: 26px;
}

.arc-about-item {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 16px 18px;
  border-radius: 12px;
  border: 1px solid var(--steel);
  background: var(--steel-soft);
}

.arc-about-k {
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--mut);
}

.arc-about-v {
  font-family: var(--body);
  font-size: 15px;
  color: var(--cream);
  text-decoration: none;
}

.arc-link {
  color: var(--amber);
  text-decoration: none;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.arc-link:hover {
  text-decoration: underline;
}

.arc-back {
  display: inline-block;
  margin-bottom: 20px;
}

.arc-profile-back {
  margin-top: 32px;
}

.arc-author-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 18px 20px;
  border-radius: 12px;
  border: 1px solid var(--steel);
  background: var(--steel-soft);
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.arc-author-card:hover {
  transform: translateY(-3px);
  border-color: var(--amber);
  background: var(--amber-soft);
}

.arc-cat-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 26px;
}

.arc-cat-chip {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--cream);
  border: 1px solid var(--steel);
  border-radius: 999px;
  padding: 4px 12px;
}

.arc-member-chip {
  text-decoration: none;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.arc-member-chip:hover {
  border-color: var(--amber);
  color: var(--amber);
}

.arc-sub-h {
  font-family: var(--disp);
  font-size: 19px;
  color: var(--cream);
  margin: 28px 0 14px 0;
}

.arc-sponsor-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 8px;
}

.arc-sponsor {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 18px;
  border-radius: 12px;
  border: 1px solid var(--steel);
  min-width: 200px;
}

.arc-sponsor-name {
  font-family: var(--disp);
  font-size: 14px;
  color: var(--cream);
}

.arc-sponsor-desc {
  font-family: var(--body);
  font-size: 13px;
  color: var(--mut);
}

.arc-rule-switch {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.arc-rule-btn {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  color: var(--mut);
  background: none;
  border: 1px solid var(--steel);
  border-radius: 999px;
  padding: 6px 16px;
  cursor: pointer;
}

.arc-rule-btn.active {
  color: var(--amber);
  border-color: var(--amber);
}

.arc-rule-panel {
  display: none;
  font-family: var(--body);
  font-size: 14px;
  line-height: 1.5;
  color: var(--text);
  padding: 16px 18px;
  border-radius: 12px;
  border: 1px solid var(--steel);
  background: var(--steel-soft);
}

.arc-rule-panel.active {
  display: block;
}

.arc-chal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
}

.arc-chal-mini {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px 20px;
  border-radius: 12px;
  border: 1px solid var(--steel);
  background: var(--steel-soft);
  text-decoration: none;
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.arc-chal-mini:hover {
  transform: translateY(-3px);
  border-color: var(--amber);
  background: var(--amber-soft);
}

.arc-chal-mini-name {
  font-family: var(--disp);
  font-size: 20px;
  font-weight: 600;
  color: var(--cream);
}

.arc-chal-mini-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.arc-authors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
}

.arc-author-main {
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-decoration: none;
}

.arc-author-name {
  font-family: var(--disp);
  font-size: 16px;
  color: var(--cream);
}

.arc-author-count {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--mut);
}

.arc-author-links {
  display: flex;
  gap: 10px;
}

.arc-author-links a {
  color: var(--mut);
  text-decoration: none;
  display: inline-flex;
}

.arc-author-links a:hover {
  color: var(--amber);
}

.arc-chal-card,
.arc-fb-card {
  padding: 20px;
  border-radius: 12px;
  border: 1px solid var(--steel);
  background: var(--steel-soft);
  margin-bottom: 16px;
}

.arc-chal-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
}

.arc-chal-name {
  font-family: var(--disp);
  font-size: 18px;
  color: var(--cream);
  margin: 0;
}

.arc-chal-points {
  color: var(--amber);
}

.arc-chal-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0 20px 0;
}

.arc-chal-tag {
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  color: var(--mut);
  border: 1px solid var(--steel);
  border-radius: 999px;
  padding: 3px 10px;
}

.arc-chal-tag-accent {
  color: var(--amber);
  border-color: var(--amber);
}

.arc-chal-title {
  margin-bottom: 6px;
}

.arc-chal-body {
  font-family: var(--body);
  font-size: 15px;
  line-height: 1.5;
  color: var(--text);
  margin: 18px 0;
}

.arc-chal-actions {
  display: flex;
  gap: 16px;
  margin: 20px 0;
}

.arc-chal-fb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--body);
  font-size: 14px;
  color: var(--mut);
  margin: 16px 0;
}

.arc-chal-fb b {
  color: var(--amber);
}

.arc-chal-writeups {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
}

.arc-sub-k {
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  color: var(--mut);
}

.arc-stat-switch {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.arc-stat-btn {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  color: var(--mut);
  background: none;
  border: 1px solid var(--steel);
  border-radius: 999px;
  padding: 6px 16px;
  cursor: pointer;
}

.arc-stat-btn.active {
  color: var(--amber);
  border-color: var(--amber);
}

.arc-stat-list {
  display: none;
}

.arc-stat-list.active {
  display: block;
}

.arc-stat-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 16px;
  border-radius: 10px;
  border: 1px solid var(--steel);
  margin-bottom: 8px;
  text-decoration: none;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.arc-stat-row:hover {
  border-color: var(--amber);
  background: var(--amber-soft);
}

.arc-stat-rank {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--mut);
  min-width: 36px;
}

.arc-stat-name {
  font-family: var(--disp);
  font-size: 14px;
  color: var(--cream);
  flex: 1;
}

.arc-stat-points {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--amber);
}

.arc-stat-extra {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--mut);
  display: flex;
  align-items: center;
  gap: 4px;
}

.arc-profile-links {
  display: flex;
  gap: 18px;
  margin: 16px 0 28px 0;
}

.arc-profile-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  margin: 24px 0;
}

.arc-profile-stat {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 16px 18px;
  border-radius: 12px;
  border: 1px solid var(--steel);
  background: var(--steel-soft);
}

.arc-profile-members {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 26px;
}

.arc-profile-chals {
  margin-bottom: 26px;
}