:root {
  --bg: #070b14;
  --panel: #111827;
  --panel2: #1a2332;
  --border: rgba(148, 163, 184, 0.14);
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --sss: linear-gradient(135deg, #fbbf24, #f59e0b, #d97706);
  --ss: linear-gradient(135deg, #a78bfa, #8b5cf6, #6d28d9);
  --s: linear-gradient(135deg, #34d399, #10b981, #059669);
  --a: linear-gradient(135deg, #60a5fa, #3b82f6, #2563eb);
}

* { box-sizing: border-box; }

body.tier-demo-page {
  margin: 0;
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(56, 189, 248, 0.12), transparent),
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(139, 92, 246, 0.08), transparent);
}

.tier-demo-shell {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
}

.tier-demo-hero {
  text-align: center;
  margin-bottom: 1.75rem;
}

.tier-demo-hero h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(90deg, #f8fafc, #38bdf8 55%, #a78bfa);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.tier-demo-hero p {
  margin: 0.35rem auto 0;
  max-width: 42rem;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

.tier-demo-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.85rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: rgba(251, 191, 36, 0.12);
  border: 1px solid rgba(251, 191, 36, 0.35);
  color: #fcd34d;
}

.tier-demo-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.tier-demo-tabs,
.tier-demo-role-tabs {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  padding: 0.35rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.tier-demo-tabs button,
.tier-demo-role-tabs button,
.tier-demo-controls select,
.tier-demo-controls input {
  appearance: none;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.5rem 0.85rem;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.tier-demo-tabs button.active,
.tier-demo-role-tabs button.active {
  background: rgba(56, 189, 248, 0.15);
  border-color: rgba(56, 189, 248, 0.35);
  color: #7dd3fc;
}

.tier-demo-controls select,
.tier-demo-controls input {
  background: var(--panel);
  border-color: var(--border);
  color: var(--text);
  min-width: 10rem;
}

.tier-demo-controls input { min-width: 14rem; }

.tier-demo-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.85rem;
}

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

@media (max-width: 640px) {
  .tier-demo-grid { grid-template-columns: 1fr; }
}

.tier-column {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  min-height: 200px;
}

.tier-column-header {
  padding: 0.75rem 0.9rem;
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  text-align: center;
  color: #0f172a;
}

.tier-column-header.tier-sss { background: var(--sss); }
.tier-column-header.tier-ss { background: var(--ss); }
.tier-column-header.tier-s { background: var(--s); }
.tier-column-header.tier-a { background: var(--a); }

.tier-column-count {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  opacity: 0.75;
  letter-spacing: 0.02em;
}

.tier-column-body {
  padding: 0.65rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  max-height: 72vh;
  overflow-y: auto;
}

.tier-card {
  background: var(--panel2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.65rem;
  transition: transform 0.15s, border-color 0.15s, box-shadow 0.15s;
}

.tier-card:hover {
  transform: translateY(-2px);
  border-color: rgba(56, 189, 248, 0.35);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

.tier-card-top {
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
}

.tier-card-thumb {
  width: 52px;
  height: 52px;
  border-radius: 10px;
  object-fit: cover;
  background: #0f172a;
  border: 1px solid var(--border);
  flex-shrink: 0;
}

.tier-card-thumb.placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--muted);
}

.tier-card-meta { flex: 1; min-width: 0; }

.tier-card-name {
  font-weight: 700;
  font-size: 0.88rem;
  line-height: 1.25;
  margin: 0 0 0.2rem;
  word-break: break-word;
}

.tier-card-sub {
  font-size: 0.72rem;
  color: var(--muted);
  margin: 0;
}

.tier-card-score {
  font-size: 0.72rem;
  font-weight: 700;
  color: #7dd3fc;
  margin-top: 0.15rem;
}

.tier-card-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-top: 0.45rem;
}

.tier-chip {
  font-size: 0.65rem;
  font-weight: 600;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
  background: rgba(15, 23, 42, 0.6);
}

.tier-chip.limited {
  border-color: rgba(251, 191, 36, 0.45);
  color: #fcd34d;
  background: rgba(251, 191, 36, 0.1);
}

.tier-chip.crit {
  border-color: rgba(248, 113, 113, 0.45);
  color: #fca5a5;
  background: rgba(248, 113, 113, 0.1);
}

.tier-chip.peak {
  border-color: rgba(52, 211, 153, 0.45);
  color: #6ee7b7;
  background: rgba(52, 211, 153, 0.1);
}

.tier-chip.pilot {
  border-color: rgba(167, 139, 250, 0.4);
  color: #c4b5fd;
}

.tier-card-why {
  margin-top: 0.5rem;
  padding-top: 0.45rem;
  border-top: 1px solid var(--border);
}

.tier-card-why-title {
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #7dd3fc;
  margin-bottom: 0.3rem;
}

.tier-card-advantages {
  margin: 0;
  padding-left: 1rem;
  font-size: 0.72rem;
  color: #cbd5e1;
  line-height: 1.55;
}

.tier-card-advantages li {
  margin: 0.35rem 0;
}

.tier-leader-buff {
  font-size: 0.66rem;
  margin: 0.2rem 0 0.45rem;
  color: #94a3b8;
  line-height: 1.4;
}

.tier-card-merit {
  font-size: 0.68rem;
  color: #38bdf8;
  margin: 0 0 0.35rem;
  font-weight: 600;
}

.tier-card-rationale {
  font-size: 0.7rem;
  color: #e2e8f0;
  line-height: 1.55;
  margin: 0 0 0.5rem;
}

.tier-card-advantages li::marker {
  color: #38bdf8;
}

.tier-demo-loading,
.tier-demo-empty {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--muted);
}

.tier-demo-foot {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.55;
}

.tier-demo-foot a { color: var(--accent); text-decoration: none; }
.tier-demo-foot a:hover { text-decoration: underline; }

.tier-demo-back {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-bottom: 1rem;
  color: var(--accent);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
}

.tier-demo-back:hover { text-decoration: underline; }

.tier-scoring-panel {
  margin-bottom: 1.35rem;
  padding: 1rem 1.1rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
}

.tier-scoring-title {
  margin: 0 0 0.45rem;
  font-size: 1.05rem;
  font-weight: 800;
  color: #f1f5f9;
}

.tier-scoring-intro {
  margin: 0 0 0.85rem;
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.5;
}

.tier-scoring-modes {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.85rem;
}

.tier-scoring-mode {
  flex: 1 1 220px;
  padding: 0.55rem 0.7rem;
  border-radius: 10px;
  background: var(--panel2);
  border: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--muted);
  line-height: 1.45;
}

.tier-scoring-mode strong {
  display: block;
  color: #7dd3fc;
  font-size: 0.78rem;
  margin-bottom: 0.15rem;
}

.tier-scoring-pillars {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.45rem;
}

.tier-pillar {
  padding: 0.5rem 0.65rem;
  border-radius: 10px;
  background: rgba(15, 23, 42, 0.55);
  border: 1px solid var(--border);
}

.tier-pillar-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.35rem;
  margin-bottom: 0.2rem;
}

.tier-pillar-label {
  font-size: 0.74rem;
  font-weight: 700;
  color: #e2e8f0;
}

.tier-pillar-max {
  font-size: 0.68rem;
  font-weight: 700;
  color: #6ee7b7;
  white-space: nowrap;
}

.tier-pillar-detail {
  margin: 0;
  font-size: 0.68rem;
  color: var(--muted);
  line-height: 1.4;
}

.tier-scoring-global {
  margin-top: 0.75rem;
  padding-top: 0.65rem;
  border-top: 1px solid var(--border);
  font-size: 0.72rem;
  color: var(--muted);
  line-height: 1.5;
}

.tier-scoring-global strong { color: #cbd5e1; }

.tier-demo-status {
  margin: 0 0 0.85rem;
  font-size: 0.78rem;
  color: var(--muted);
}

.tier-card-subscores {
  margin-top: 0.45rem;
  display: flex;
  flex-direction: column;
  gap: 0.22rem;
}

.tier-sub-row {
  display: grid;
  grid-template-columns: 4.5rem 1fr 2rem;
  gap: 0.35rem;
  align-items: center;
  font-size: 0.62rem;
  color: var(--muted);
}

.tier-sub-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tier-sub-bar {
  height: 4px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.15);
  overflow: hidden;
}

.tier-sub-bar > span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #38bdf8, #818cf8);
}

.tier-sub-val {
  text-align: right;
  font-weight: 700;
  color: #94a3b8;
  font-variant-numeric: tabular-nums;
}

.tier-card-thumb.fallback-icon {
  object-fit: contain;
  padding: 6px;
  background: #0f172a;
}