.ranks-page {
  padding: 120px 32px 100px;
  min-height: 100vh;
}

.ranks-page__hero {
  text-align: center;
  margin-bottom: 80px;
}

.ranks-page__hero h1 {
  font-family: var(--font-display);
  font-size: clamp(48px, 8vw, 96px);
  letter-spacing: 0.05em;
  line-height: 1;
  margin-bottom: 16px;
}

.ranks-page__hero p {
  color: var(--fg-secondary);
  font-size: 16px;
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.7;
}

.spectrum {
  max-width: 1300px;
  margin: 0 auto;
  position: relative;
  padding: 80px 0 100px;
}

.spectrum__bar {
  position: relative;
  height: 64px;
  border-radius: 999px;
  background: linear-gradient(90deg,
    #2D3344 0%,
    #4B5366 8%,
    #6B7280 17%,
    #84A98C 28%,
    #4FB3F9 41%,
    #A78BFA 56%,
    #F59E0B 71%,
    #EF4444 84%,
    #FFFFFF 96%,
    #FFFFFF 100%);
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,0.1),
    0 0 60px -10px rgba(124, 58, 237, 0.4),
    0 0 120px -20px rgba(6, 182, 212, 0.3);
  overflow: visible;
}

.spectrum__bar::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(255,255,255,0.15), transparent 50%);
  pointer-events: none;
}

.spectrum__markers {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.spectrum__node {
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg-deep);
  border: 3px solid var(--node-color, white);
  box-shadow: 0 0 16px var(--node-color, white);
  cursor: pointer;
  pointer-events: auto;
  transition: all 0.3s var(--ease-out);
}

.spectrum__node:hover,
.spectrum__node:focus {
  transform: translate(-50%, -50%) scale(1.4);
  box-shadow: 0 0 28px var(--node-color, white);
  outline: none;
}

.spectrum__node--ss {
  background: white;
  border-color: white;
  animation: ssGlow 2s ease-in-out infinite;
}

.spectrum__node--sss {
  width: 36px; height: 36px;
  background: var(--gate-energy);
  border-color: white;
  animation: sssGlow 1.5s ease-in-out infinite;
}

@keyframes ssGlow {
  0%, 100% { box-shadow: 0 0 16px white, 0 0 32px rgba(255,255,255,0.5); }
  50%      { box-shadow: 0 0 24px white, 0 0 48px rgba(255,255,255,0.8); }
}

@keyframes sssGlow {
  0%, 100% { box-shadow: 0 0 16px #7C3AED, 0 0 32px #06B6D4, 0 0 48px #F472B6; }
  50%      { box-shadow: 0 0 28px #7C3AED, 0 0 56px #06B6D4, 0 0 80px #F472B6; }
}

.spectrum__label {
  position: absolute;
  top: -36px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: 0.04em;
  color: var(--node-color, white);
  text-shadow: 0 0 8px currentColor;
  white-space: nowrap;
  pointer-events: none;
}

.spectrum__milestone {
  position: absolute;
  top: 80px;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  background: var(--milestone-color, var(--gate-cyan));
  pointer-events: none;
}

.spectrum__milestone-label {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-top: 12px;
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--milestone-color, var(--gate-cyan));
  background: rgba(6, 8, 15, 0.92);
  border: 1px solid currentColor;
  border-radius: 6px;
  white-space: nowrap;
  text-align: center;
  line-height: 1.4;
}

.spectrum__milestone-label strong {
  display: block;
  color: var(--fg-primary);
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.spectrum__popup {
  position: absolute;
  bottom: calc(100% + 50px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  width: 320px;
  padding: 20px;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border: 1px solid var(--node-color, var(--border-strong));
  border-radius: var(--radius-md);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: all 0.3s var(--ease-out);
  box-shadow: 0 0 32px -8px var(--node-color, var(--gate-violet));
  z-index: 5;
}

.spectrum__node:hover + .spectrum__popup,
.spectrum__node:focus + .spectrum__popup,
.spectrum__popup:hover {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

.spectrum__popup::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 16px; height: 16px;
  background: var(--bg-glass);
  border-right: 1px solid var(--node-color, var(--border-strong));
  border-bottom: 1px solid var(--node-color, var(--border-strong));
}

.spectrum__popup-rank {
  font-family: var(--font-display);
  font-size: 28px;
  letter-spacing: 0.04em;
  color: var(--node-color, white);
  text-shadow: 0 0 12px currentColor;
  margin-bottom: 6px;
}

.spectrum__popup-desc {
  font-size: 13px;
  color: var(--fg-secondary);
  line-height: 1.6;
  margin-bottom: 14px;
}

.spectrum__popup-reps {
  border-top: 1px solid var(--border-subtle);
  padding-top: 12px;
}

.spectrum__popup-reps-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 8px;
}

.spectrum__popup-rep {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  margin: 2px;
  font-size: 12px;
  background: rgba(255,255,255,0.04);
  border-radius: 4px;
  cursor: pointer;
}

.spectrum__popup-rep:hover {
  background: rgba(255,255,255,0.08);
}

.spectrum__legend {
  display: flex;
  justify-content: space-between;
  margin-top: 240px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--fg-muted);
}

/* 등급 카드 그리드 */
.rank-cards {
  margin-top: 80px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.rank-card {
  padding: 28px;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  border-top: 3px solid var(--rank-color, var(--gate-violet));
  backdrop-filter: blur(16px);
  position: relative;
  overflow: hidden;
}

.rank-card__rank {
  font-family: var(--font-display);
  font-size: 48px;
  letter-spacing: 0.04em;
  line-height: 1;
  color: var(--rank-color);
  text-shadow: 0 0 16px currentColor;
  margin-bottom: 12px;
}

.rank-card__title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--fg-primary);
}

.rank-card__desc {
  font-size: 13px;
  color: var(--fg-secondary);
  line-height: 1.6;
}

.rank-card__count {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-muted);
}