.panel {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.045), rgba(255,255,255,0.015)),
    rgba(8, 18, 37, 0.82);
  border: 1px solid var(--panel-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}
.panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(120deg, rgba(79,127,255,0.1), transparent 30%, transparent 70%, rgba(155,77,255,0.08));
  pointer-events: none;
}
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}
.brand-badge {
  width: 58px;
  height: 58px;
  border-radius: 50%;
  overflow: hidden;
  border: 1px solid rgba(216,228,255,0.16);
  box-shadow: 0 0 24px rgba(79,127,255,0.25);
  background: rgba(255,255,255,0.04);
}
.brand-copy small,
.nav a,
.kicker,
.section-kicker,
.button,
.tag,
.footer strong,
.page-pill {
  font-family: var(--font-display);
  text-transform: uppercase;
}
.brand-copy small {
  display: block;
  font-size: 11px;
  letter-spacing: 0.32em;
  color: rgba(216,228,255,0.62);
}
.brand-copy strong {
  display: block;
  margin-top: 4px;
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 0.14em;
}
.nav {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.nav a {
  padding: 11px 15px;
  border-radius: 999px;
  border: 1px solid rgba(216,228,255,0.12);
  background: rgba(255,255,255,0.035);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: rgba(238,246,255,0.82);
  transition: 180ms ease;
}
.nav a:hover,
.nav a.active {
  transform: translateY(-1px);
  border-color: rgba(81,228,255,0.35);
  box-shadow: 0 0 18px rgba(81,228,255,0.2);
}
.kicker,
.page-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  padding: 9px 14px;
  border-radius: 999px;
  letter-spacing: 0.16em;
  font-size: 11px;
  color: var(--chrome);
  background: rgba(81,228,255,0.08);
  border: 1px solid rgba(81,228,255,0.22);
  box-shadow: var(--glow-cyan);
}
.hero-copy {
  padding: 28px;
  display: grid;
  align-content: center;
}
.hero-copy h1,
.section-title,
.card h3,
.info-card h3,
.page-hero h1,
.footer strong {
  font-family: var(--font-display);
  text-transform: uppercase;
}
.hero-copy h1 {
  margin: 16px 0 12px;
  line-height: 0.94;
  letter-spacing: 0.06em;
  font-size: clamp(2.8rem, 6vw, 5.4rem);
}
.hero-copy .gradient {
  display: block;
  background: linear-gradient(90deg, var(--red), var(--chrome), var(--blue), var(--purple), var(--green));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-copy p,
.section-copy,
.card p,
.info-card p,
.page-hero p,
.page-body p,
.page-list li {
  color: var(--muted);
  line-height: 1.62;
  font-size: 1.08rem;
}
.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 14px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 18px;
  border-radius: 14px;
  letter-spacing: 0.14em;
  font-size: 11px;
  transition: 180ms ease;
}
.button.primary {
  color: #07101f;
  background: linear-gradient(90deg, var(--cyan), var(--blue));
  box-shadow: 0 0 22px rgba(81,228,255,0.28);
}
.button.secondary {
  color: var(--text);
  border: 1px solid rgba(216,228,255,0.14);
  background: rgba(255,255,255,0.04);
}
.button:hover { transform: translateY(-1px); }
.hero-visual {
  min-height: 540px;
  padding: 30px;
  display: grid;
  align-content: stretch;
  gap: 16px;
  background:
    radial-gradient(circle at 20% 20%, rgba(155,77,255,0.12), transparent 22%),
    radial-gradient(circle at 80% 18%, rgba(79,127,255,0.14), transparent 24%),
    radial-gradient(circle at 70% 78%, rgba(35,240,110,0.10), transparent 22%),
    linear-gradient(160deg, rgba(5,11,22,0.98), rgba(10,18,34,0.92));
}

.hero-standard {
  position: relative;
  display: grid;
  align-content: end;
  min-height: 340px;
  padding: 24px;
  border-radius: 22px;
  overflow: hidden;
  border: 1px solid rgba(216,228,255,0.12);
  background:
    radial-gradient(circle at 18% 28%, rgba(255,59,59,0.16), transparent 20%),
    radial-gradient(circle at 72% 18%, rgba(79,127,255,0.18), transparent 22%),
    radial-gradient(circle at 62% 78%, rgba(35,240,110,0.16), transparent 20%),
    linear-gradient(180deg, rgba(5,10,18,0.6), rgba(7,13,24,0.12)),
    linear-gradient(135deg, #050914 0%, #081224 45%, #050914 100%);
  box-shadow:
    inset 0 0 40px rgba(255,255,255,0.03),
    0 0 40px rgba(79,127,255,0.10);
}

.hero-standard::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, transparent 0 6%, rgba(81,228,255,0.18) 6% 6.5%, transparent 6.5% 100%),
    linear-gradient(180deg, transparent 0 88%, rgba(81,228,255,0.16) 88% 88.8%, transparent 88.8% 100%);
  opacity: 0.9;
}

.hero-standard::after {
  content: "";
  position: absolute;
  inset: 14px;
  border-radius: 18px;
  pointer-events: none;
  border: 1px solid rgba(216,228,255,0.08);
  box-shadow:
    inset 0 0 28px rgba(81,228,255,0.05),
    0 0 18px rgba(81,228,255,0.06);
}

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

.tube-rules span {
  position: absolute;
  height: 6px;
  border-radius: 999px;
  filter: blur(0.1px);
  box-shadow: 0 0 16px currentColor, 0 0 30px currentColor;
  opacity: 0.95;
}

.tube-rules .r1 {
  top: 18%;
  left: 8%;
  width: 36%;
  color: var(--red);
  background: linear-gradient(90deg, transparent, var(--red), transparent);
}

.tube-rules .r2 {
  top: 24%;
  right: 9%;
  width: 42%;
  color: var(--blue);
  background: linear-gradient(90deg, transparent, var(--blue), transparent);
}

.tube-rules .r3 {
  bottom: 26%;
  left: 14%;
  width: 34%;
  color: var(--purple);
  background: linear-gradient(90deg, transparent, var(--purple), transparent);
}

.tube-rules .r4 {
  bottom: 16%;
  right: 12%;
  width: 40%;
  color: var(--green);
  background: linear-gradient(90deg, transparent, var(--green), transparent);
}

.hero-standard-content {
  position: relative;
  z-index: 1;
  max-width: 540px;
}

.hero-standard-content h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: clamp(1.5rem, 3vw, 2.3rem);
  color: var(--chrome);
}

.hero-standard-content p {
  margin: 0;
  color: rgba(238,246,255,0.76);
  line-height: 1.55;
  font-size: 1.02rem;
}

.legend {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(216,228,255,0.1);
  background: rgba(255,255,255,0.03);
}

.legend-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex: 0 0 auto;
  background: var(--dot);
  box-shadow: 0 0 14px var(--dot);
}
.section-kicker {
  color: rgba(216,228,255,0.56);
  font-size: 10px;
  letter-spacing: 0.18em;
}
.section-title {
  margin: 8px 0 0;
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  letter-spacing: 0.12em;
}
.card, .info-card, .page-hero, .page-body { padding: 20px; }
.card h3, .info-card h3 {
  margin: 0 0 8px;
  font-size: 1.16rem;
  letter-spacing: 0.08em;
}
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 10px 0 12px;
}
.tag {
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--chrome);
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid rgba(216,228,255,0.14);
  background: rgba(255,255,255,0.045);
}
.page-hero { margin-top: 10px; }
.page-hero h1 {
  margin: 16px 0 10px;
  letter-spacing: 0.08em;
  font-size: clamp(2.4rem, 6vw, 4.4rem);
}
.page-hero h1 span {
  color: var(--page-accent, var(--cyan));
  text-shadow: 0 0 16px var(--page-accent, var(--cyan));
}
.page-body h2 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 1.08rem;
}
.page-list { margin: 0; padding-left: 20px; }
.footer strong {
  font-size: 13px;
  letter-spacing: 0.14em;
  color: rgba(238,246,255,0.9);
}
@keyframes slow-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.section-accent-red .section-title,
.section-accent-red .section-kicker { color: var(--red); }

.section-accent-blue .section-title,
.section-accent-blue .section-kicker { color: var(--blue); }

.section-accent-green .section-title,
.section-accent-green .section-kicker { color: var(--green); }

.section-accent-purple .section-title,
.section-accent-purple .section-kicker { color: var(--purple); }

.cards-3 .card,
.cards-3 .info-card {
  position: relative;
}

.cards-3 .card::after,
.cards-3 .info-card::after {
  content: "";
  position: absolute;
  left: 20px;
  right: 20px;
  top: 0;
  height: 4px;
  border-radius: 999px;
  opacity: 0.98;
}

.card.accent-red,
.info-card.accent-red {
  box-shadow: var(--shadow), inset 0 0 0 1px rgba(255,59,59,0.08), 0 0 20px rgba(255,59,59,0.08);
}
.card.accent-red::after,
.info-card.accent-red::after {
  background: linear-gradient(90deg, transparent, var(--red), transparent);
  box-shadow: 0 0 12px var(--red), 0 0 24px rgba(255,59,59,0.45);
}

.card.accent-blue,
.info-card.accent-blue {
  box-shadow: var(--shadow), inset 0 0 0 1px rgba(79,127,255,0.08), 0 0 20px rgba(79,127,255,0.08);
}
.card.accent-blue::after,
.info-card.accent-blue::after {
  background: linear-gradient(90deg, transparent, var(--blue), transparent);
  box-shadow: 0 0 12px var(--blue), 0 0 24px rgba(79,127,255,0.45);
}

.card.accent-green,
.info-card.accent-green {
  box-shadow: var(--shadow), inset 0 0 0 1px rgba(35,240,110,0.08), 0 0 20px rgba(35,240,110,0.08);
}
.card.accent-green::after,
.info-card.accent-green::after {
  background: linear-gradient(90deg, transparent, var(--green), transparent);
  box-shadow: 0 0 12px var(--green), 0 0 24px rgba(35,240,110,0.42);
}

.card.accent-purple,
.info-card.accent-purple {
  box-shadow: var(--shadow), inset 0 0 0 1px rgba(155,77,255,0.08), 0 0 20px rgba(155,77,255,0.08);
}
.card.accent-purple::after,
.info-card.accent-purple::after {
  background: linear-gradient(90deg, transparent, var(--purple), transparent);
  box-shadow: 0 0 12px var(--purple), 0 0 24px rgba(155,77,255,0.42);
}

.accent-outline-red { border-color: rgba(255,59,59,0.18); }
.accent-outline-blue { border-color: rgba(79,127,255,0.18); }
.accent-outline-green { border-color: rgba(35,240,110,0.18); }
.accent-outline-purple { border-color: rgba(155,77,255,0.18); }


.history-list {
  margin: 14px 0 0;
  padding-left: 20px;
  display: grid;
  gap: 6px;
}

.history-list li {
  color: rgba(238,246,255,0.82);
  line-height: 1.5;
  font-size: 1rem;
}

.history-list li::marker {
  color: var(--cyan);
}

.hero-copy p + p {
  margin-top: 10px;
}


.card-title-link {
  color: inherit;
  text-decoration: none;
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.card-title-link::after {
  content: "→";
  color: var(--cyan);
  font-size: 0.9em;
  opacity: 0.82;
  transform: translateX(0);
  transition: transform 180ms ease, opacity 180ms ease;
}

.card-title-link:hover,
.card-title-link:focus-visible {
  color: var(--cyan);
}

.card-title-link:hover::after,
.card-title-link:focus-visible::after {
  opacity: 1;
  transform: translateX(3px);
}

.category-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 12px;
}

.category-links li a {
  display: block;
  padding: 14px 16px;
  border-radius: 16px;
  text-decoration: none;
  color: var(--text);
  border: 1px solid rgba(216,228,255,0.12);
  background: rgba(255,255,255,0.035);
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.category-links li a:hover,
.category-links li a:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(81,228,255,0.45);
  background: rgba(81,228,255,0.08);
}

.category-links strong {
  display: block;
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.category-links span {
  color: rgba(238,246,255,0.72);
  font-size: 0.96rem;
}