.ctf-page {
  --ctf-ink: #f5fbff;
  --ctf-muted: #a6bdd0;
  --ctf-dim: #6f8296;
  --ctf-bg: #05070d;
  --ctf-panel: rgba(9, 16, 30, 0.82);
  --ctf-panel-strong: rgba(13, 24, 43, 0.94);
  --ctf-line: rgba(134, 207, 255, 0.18);
  --ctf-cyan: #66e4ff;
  --ctf-purple: #9f7aff;
  --ctf-gold: #ffd166;
  --ctf-red: #ff6b8a;
  --ctf-green: #6dffa8;
  --ctf-radius: 22px;
  --ctf-sans: var(--font-primary, 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif);
  --ctf-display: var(--font-display, 'Sora', var(--ctf-sans));
  --ctf-mono: var(--font-mono, 'JetBrains Mono', 'SFMono-Regular', Menlo, Monaco, Consolas, monospace);
  background:
    radial-gradient(circle at 12% 5%, rgba(159, 122, 255, 0.24), transparent 31rem),
    radial-gradient(circle at 86% 14%, rgba(102, 228, 255, 0.18), transparent 28rem),
    linear-gradient(180deg, #05070d 0%, #08101c 48%, #05070d 100%);
  color: var(--ctf-ink);
  font-family: var(--ctf-sans);
  margin-top: -1px;
  overflow: hidden;
  position: relative;
}

.ctf-page::before {
  background-image:
    linear-gradient(rgba(102, 228, 255, 0.034) 1px, transparent 1px),
    linear-gradient(90deg, rgba(102, 228, 255, 0.034) 1px, transparent 1px);
  background-size: 44px 44px;
  content: "";
  inset: 0;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.8), transparent 64%);
  pointer-events: none;
  position: absolute;
}

.ctf-shell {
  margin: 0 auto;
  max-width: 1360px;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.ctf-hero {
  padding: 72px 0 46px;
}

.ctf-hero-grid {
  align-items: center;
  display: grid;
  gap: clamp(32px, 6vw, 88px);
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 0.58fr);
}

.ctf-kicker {
  color: var(--ctf-cyan);
  font-family: var(--ctf-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  margin: 0 0 14px;
  text-transform: uppercase;
}

.ctf-hero h1,
.ctf-section-heading h2,
.ctf-finder-header h2 {
  color: var(--ctf-ink);
  font-family: var(--ctf-display);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.08;
  margin: 0;
}

.ctf-hero h1 {
  font-size: clamp(2.75rem, 5vw, 4.65rem);
  letter-spacing: -0.025em;
  line-height: 1.08;
  max-width: 760px;
  text-shadow: 0 0 34px rgba(102, 228, 255, 0.11);
}

.ctf-hero-subtitle {
  color: var(--ctf-muted);
  font-size: clamp(1rem, 1.35vw, 1.13rem);
  line-height: 1.65;
  margin: 22px 0 0;
  max-width: 620px;
}

.ctf-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.ctf-btn {
  align-items: center;
  border-radius: 999px;
  display: inline-flex;
  font-family: var(--ctf-sans);
  font-size: 0.94rem;
  font-weight: 800;
  justify-content: center;
  letter-spacing: 0;
  min-height: 48px;
  overflow: hidden;
  padding: 0 24px;
  position: relative;
  text-decoration: none;
  transition: background 220ms ease, border-color 220ms ease, box-shadow 220ms ease, color 220ms ease, transform 220ms ease;
}

.ctf-btn::before {
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.34), transparent);
  content: "";
  inset: 0;
  pointer-events: none;
  position: absolute;
  transform: translateX(-120%);
  transition: transform 520ms ease;
}

.ctf-btn:focus-visible {
  outline: 3px solid rgba(102, 228, 255, 0.58);
  outline-offset: 4px;
}

.ctf-btn:hover::before {
  transform: translateX(120%);
}

.ctf-btn:hover {
  transform: translateY(-3px);
}

.ctf-card-link:hover,
.ctf-inline-link:hover {
  transform: translateY(-2px);
}

.ctf-btn-primary {
  background: linear-gradient(135deg, #45f4ff 0%, #7c5cff 58%, #a855f7 100%);
  border: 1px solid rgba(102, 228, 255, 0.52);
  box-shadow: 0 10px 28px rgba(69, 244, 255, 0.24), 0 0 44px rgba(124, 92, 255, 0.2);
  color: #ffffff;
  text-shadow: 0 1px 12px rgba(3, 8, 18, 0.45);
}

.ctf-btn-primary:hover {
  border-color: rgba(255, 255, 255, 0.34);
  box-shadow: 0 15px 38px rgba(69, 244, 255, 0.34), 0 0 58px rgba(168, 85, 247, 0.32);
}

.ctf-btn-ghost {
  background: rgba(255, 255, 255, 0.075);
  border: 1px solid rgba(134, 207, 255, 0.3);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.22), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  color: var(--ctf-ink);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.ctf-btn-ghost:hover {
  background: rgba(102, 228, 255, 0.13);
  border-color: rgba(102, 228, 255, 0.56);
  box-shadow: 0 12px 32px rgba(69, 244, 255, 0.18), inset 0 1px 0 rgba(255, 255, 255, 0.12);
  color: #ffffff;
}

.ctf-topic-list span,
.ctf-filter-chip,
.ctf-card-meta span,
.ctf-difficulty {
  border: 1px solid rgba(134, 207, 255, 0.18);
  border-radius: 999px;
  color: var(--ctf-muted);
  font-family: var(--ctf-sans);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0;
  padding: 6px 9px;
}

.ctf-terminal {
  background:
    linear-gradient(180deg, rgba(8, 18, 32, 0.96), rgba(7, 11, 19, 0.96)),
    radial-gradient(circle at 80% 15%, rgba(102, 228, 255, 0.24), transparent 16rem);
  border: 1px solid rgba(102, 228, 255, 0.26);
  border-radius: var(--ctf-radius);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.38), inset 0 0 30px rgba(102, 228, 255, 0.045);
  font-family: var(--ctf-mono);
  overflow: hidden;
  position: relative;
}

.ctf-terminal::after {
  background: linear-gradient(90deg, transparent, rgba(102, 228, 255, 0.14), transparent);
  content: "";
  height: 1px;
  left: 0;
  position: absolute;
  right: 0;
  top: 48px;
}

.ctf-terminal-bar {
  display: flex;
  gap: 7px;
  padding: 18px;
}

.ctf-terminal-bar span {
  background: var(--ctf-red);
  border-radius: 999px;
  height: 9px;
  width: 9px;
}

.ctf-terminal-bar span:nth-child(2) {
  background: var(--ctf-gold);
}

.ctf-terminal-bar span:nth-child(3) {
  background: var(--ctf-green);
}

.ctf-terminal-body {
  padding: 8px 22px 24px;
}

.ctf-terminal-body p {
  color: var(--ctf-muted);
  font-size: 0.83rem;
  margin: 0 0 18px;
}

.ctf-terminal-body strong {
  color: var(--ctf-cyan);
}

.ctf-terminal-body ol {
  display: grid;
  gap: 10px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.ctf-terminal-body li {
  align-items: center;
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid rgba(134, 207, 255, 0.14);
  border-radius: 14px;
  color: var(--ctf-ink);
  display: flex;
  gap: 12px;
  font-size: 0.86rem;
  padding: 12px;
}

.ctf-terminal-body li span {
  color: var(--ctf-gold);
  font-weight: 900;
}

.ctf-paths,
.ctf-finder,
.ctf-faq {
  padding: 48px 0;
}

.ctf-finder {
  padding-top: 26px;
}

.ctf-section-heading {
  margin-bottom: 22px;
  max-width: 860px;
}

.ctf-section-heading h2,
.ctf-finder-header h2 {
  font-size: clamp(1.9rem, 3.1vw, 3.1rem);
  letter-spacing: -0.025em;
  line-height: 1.12;
}

.ctf-section-heading p:not(.ctf-kicker) {
  color: var(--ctf-muted);
  font-size: 0.98rem;
  line-height: 1.68;
}

.ctf-path-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.ctf-path-card,
.ctf-finder-panel,
.ctf-faq details {
  background: var(--ctf-panel);
  border: 1px solid var(--ctf-line);
  box-shadow: 0 18px 52px rgba(0, 0, 0, 0.2);
}

.ctf-path-card {
  border-radius: 18px;
  display: flex;
  flex-direction: column;
  min-height: 0;
  padding: 18px;
  position: relative;
}

.ctf-path-card-featured {
  background:
    radial-gradient(circle at 80% 0%, rgba(255, 209, 102, 0.16), transparent 14rem),
    var(--ctf-panel-strong);
  border-color: rgba(255, 209, 102, 0.32);
}

.ctf-path-index {
  color: var(--ctf-gold);
  font-family: var(--ctf-sans);
  font-size: 0.72rem;
  font-weight: 900;
}

.ctf-path-head {
  align-items: baseline;
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
}

.ctf-path-card h3,
.ctf-card h3,
.ctf-empty h3 {
  color: var(--ctf-ink);
  font-size: 1.08rem;
  letter-spacing: 0;
  line-height: 1.28;
  margin: 0;
}

.ctf-path-card ul {
  display: grid;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.ctf-path-card li {
  align-items: center;
  color: var(--ctf-muted);
  display: flex;
  font-size: 0.9rem;
  gap: 9px;
  line-height: 1.35;
}

.ctf-path-card li::before {
  background: linear-gradient(135deg, var(--ctf-cyan), var(--ctf-purple));
  border-radius: 999px;
  content: "";
  flex: 0 0 auto;
  height: 7px;
  width: 7px;
}

.ctf-path-card p,
.ctf-card-description,
.ctf-empty p,
.ctf-faq p {
  color: var(--ctf-muted);
  font-size: 0.91rem;
  line-height: 1.65;
}

.ctf-path-card strong {
  color: var(--ctf-cyan);
  display: block;
  font-family: var(--ctf-sans);
  font-size: 0.84rem;
  font-weight: 800;
  line-height: 1.5;
  margin-top: auto;
  padding-top: 16px;
}

.ctf-finder-panel {
  border-radius: 26px;
  padding: 24px;
}

.ctf-finder-header {
  align-items: end;
  display: flex;
  gap: 18px;
  justify-content: space-between;
  margin-bottom: 22px;
}

.ctf-results-count {
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  height: 1px;
  overflow: hidden;
  position: absolute;
  white-space: nowrap;
  width: 1px;
}

.ctf-controls {
  display: grid;
  gap: 12px;
  margin-bottom: 18px;
}

.ctf-search-label {
  color: var(--ctf-muted);
  font-family: var(--ctf-sans);
  font-size: 0.72rem;
  font-weight: 800;
}

.ctf-search {
  background: rgba(2, 6, 12, 0.76);
  border: 1px solid rgba(102, 228, 255, 0.22);
  border-radius: 14px;
  color: var(--ctf-ink);
  font: 0.88rem var(--ctf-sans);
  min-height: 46px;
  outline: none;
  padding: 0 18px;
}

.ctf-search:focus {
  border-color: var(--ctf-cyan);
  box-shadow: 0 0 0 4px rgba(102, 228, 255, 0.1);
}

.ctf-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.ctf-filter-chip {
  background: rgba(255, 255, 255, 0.035);
  cursor: pointer;
  font-family: var(--ctf-sans);
  min-height: 40px;
}

.ctf-filter-chip:focus-visible,
.ctf-card-link:focus-visible,
.ctf-inline-link:focus-visible,
.ctf-faq summary:focus-visible {
  outline: 3px solid rgba(102, 228, 255, 0.58);
  outline-offset: 3px;
}

.ctf-filter-chip.is-active {
  background: rgba(102, 228, 255, 0.12);
  border-color: rgba(102, 228, 255, 0.48);
  color: var(--ctf-ink);
}

.ctf-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.ctf-card {
  align-items: stretch;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.028), rgba(255, 255, 255, 0.012)),
    rgba(4, 9, 17, 0.72);
  border: 1px solid rgba(134, 207, 255, 0.14);
  border-radius: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 398px;
  overflow: hidden;
  padding: 18px;
  position: relative;
  transition: background 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.ctf-card-brand {
  align-items: center;
  background:
    radial-gradient(circle at 15% 0%, rgba(102, 228, 255, 0.11), transparent 9rem),
    linear-gradient(135deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.018));
  border: 1px solid rgba(134, 207, 255, 0.13);
  border-radius: 14px;
  display: flex;
  height: 64px;
  justify-content: center;
  margin-bottom: 2px;
  overflow: hidden;
  padding: 12px 16px;
}

.ctf-card-brand img {
  display: block;
  filter: drop-shadow(0 8px 18px rgba(0, 0, 0, 0.22));
  height: 100%;
  max-height: 40px;
  max-width: 86%;
  object-fit: contain;
  width: auto;
}

.ctf-card-brand span {
  color: var(--ctf-ink);
  font-family: var(--ctf-display);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.ctf-card:hover {
  background: rgba(11, 22, 38, 0.84);
  border-color: rgba(102, 228, 255, 0.28);
  transform: translateY(-2px);
}

.ctf-card[hidden] {
  display: none;
}

.ctf-card-top {
  align-items: start;
  display: grid;
  gap: 10px;
}

.ctf-difficulty {
  font-size: 0.68rem;
  line-height: 1;
  padding: 6px 9px;
}

.ctf-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.ctf-card-meta span:not(.ctf-difficulty) {
  background: rgba(255, 255, 255, 0.025);
  color: var(--ctf-dim);
  font-size: 0.68rem;
  line-height: 1;
}

.ctf-difficulty-beginner {
  border-color: rgba(109, 255, 168, 0.38);
  color: var(--ctf-green);
}

.ctf-difficulty-intermediate,
.ctf-difficulty-mixed {
  border-color: rgba(255, 209, 102, 0.38);
  color: var(--ctf-gold);
}

.ctf-difficulty-advanced {
  border-color: rgba(255, 107, 138, 0.42);
  color: var(--ctf-red);
}

.ctf-card-description {
  color: var(--ctf-muted);
  font-size: 0.92rem;
  line-height: 1.58;
  margin: 0;
}

.ctf-card-start {
  color: var(--ctf-ink);
  font-size: 0.8rem;
  line-height: 1.5;
  margin: 0;
}

.ctf-card-start span {
  color: var(--ctf-cyan);
  display: inline;
  font-size: 0.78rem;
  font-weight: 800;
}

.ctf-topic-list {
  align-content: start;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 0;
}

.ctf-card-link,
.ctf-inline-link {
  align-items: center;
  color: var(--ctf-cyan);
  display: inline-flex;
  font-family: var(--ctf-sans);
  font-size: 0.84rem;
  font-weight: 900;
  margin-top: auto;
  text-decoration: none;
  transition: transform 160ms ease;
  white-space: nowrap;
}

.ctf-card-link {
  border: 1px solid rgba(102, 228, 255, 0.18);
  border-radius: 999px;
  justify-content: center;
  min-height: 44px;
  padding: 0 0.9rem;
}

.ctf-link-note {
  background: rgba(102, 228, 255, 0.1);
  border-radius: 999px;
  color: var(--ctf-muted);
  font-size: 0.64rem;
  margin-left: 0.45rem;
  padding: 0.18rem 0.42rem;
  text-transform: uppercase;
}

.ctf-card-footer {
  border-top: 1px solid rgba(134, 207, 255, 0.12);
  margin-top: auto;
  padding-top: 12px;
}

.ctf-empty {
  background: rgba(255, 255, 255, 0.035);
  border: 1px dashed rgba(134, 207, 255, 0.28);
  border-radius: 18px;
  margin-top: 18px;
  padding: 22px;
  text-align: center;
}

.ctf-faq-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
}

.ctf-faq details {
  border-radius: 16px;
  padding: 0;
  transition: background 160ms ease, border-color 160ms ease;
}

.ctf-faq details[open] {
  background: rgba(11, 22, 38, 0.86);
  border-color: rgba(102, 228, 255, 0.26);
}

.ctf-faq summary {
  align-items: center;
  color: var(--ctf-ink);
  cursor: pointer;
  display: flex;
  font-size: 0.92rem;
  font-weight: 800;
  line-height: 1.35;
  list-style: none;
  min-height: 48px;
  padding: 0.85rem 1rem 0.85rem 2.7rem;
  position: relative;
}

.ctf-faq summary::-webkit-details-marker {
  display: none;
}

.ctf-faq summary::before {
  color: var(--ctf-cyan);
  content: "+";
  font-size: 1rem;
  font-weight: 900;
  left: 1rem;
  line-height: 1;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
}

.ctf-faq details[open] summary::before {
  content: "-";
}

.ctf-faq details p {
  margin: 0;
  max-width: 760px;
  padding: 0 1rem 1rem 2.7rem;
}

@media (max-width: 1180px) {
  .ctf-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .ctf-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  .ctf-hero-grid,
  .ctf-path-grid,
  .ctf-faq-grid {
    grid-template-columns: 1fr;
  }

  .ctf-hero-grid {
    gap: 26px;
  }

  .ctf-grid {
    gap: 12px;
  }

  .ctf-card {
    border: 1px solid rgba(134, 207, 255, 0.16);
    border-radius: 18px;
    padding: 16px;
  }

  .ctf-terminal {
    min-width: 0;
  }

  .ctf-finder-header {
    align-items: start;
    flex-direction: column;
  }

}

@media (max-width: 560px) {
  .ctf-shell {
    padding: 0 16px;
  }

  .ctf-hero {
    padding: 46px 0 32px;
  }

  .ctf-paths,
  .ctf-finder,
  .ctf-faq {
    padding: 42px 0;
  }

  .ctf-hero h1 {
    font-size: clamp(2.5rem, 12vw, 3.35rem);
    letter-spacing: -0.025em;
  }

  .ctf-section-heading h2,
  .ctf-finder-header h2 {
    font-size: clamp(1.85rem, 9vw, 2.55rem);
  }

  .ctf-finder-panel {
    border-radius: 20px;
    padding: 18px;
  }

  .ctf-btn {
    width: 100%;
  }

  .ctf-grid {
    grid-template-columns: 1fr;
  }

  .ctf-card {
    min-height: 0;
    grid-template-rows: auto auto auto auto auto;
  }

  .ctf-card-description {
    overflow: visible;
  }

  .ctf-terminal {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .ctf-btn,
  .ctf-card-link,
  .ctf-inline-link {
    transition: none;
  }
}