:root {
  --kb-ink: #111827;
  --kb-muted: #64748b;
  --kb-line: rgba(99, 102, 241, 0.16);
  --kb-indigo: #4f46e5;
  --kb-cyan: #0891b2;
  --kb-card: rgba(255, 255, 255, 0.82);
  --md-text-font: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --md-code-font: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

[data-md-color-scheme="slate"] {
  --kb-ink: #f8fafc;
  --kb-muted: #94a3b8;
  --kb-line: rgba(129, 140, 248, 0.22);
  --kb-card: rgba(15, 23, 42, 0.74);
  --md-default-bg-color: #090d18;
  --md-default-fg-color: #e5e7eb;
  --md-default-fg-color--light: #cbd5e1;
  --md-code-bg-color: #111827;
}

html {
  scroll-behavior: smooth;
}

body {
  letter-spacing: 0.005em;
}

.md-grid {
  max-width: 86rem;
}

.md-header,
.md-tabs {
  backdrop-filter: saturate(160%) blur(16px);
}

.md-header {
  background: linear-gradient(90deg, #312e81 0%, #4338ca 48%, #0e7490 100%);
}

.md-tabs {
  background: rgba(49, 46, 129, 0.96);
}

.md-typeset {
  font-size: 0.79rem;
  line-height: 1.8;
}

.md-typeset h1,
.md-typeset h2,
.md-typeset h3 {
  font-weight: 720;
  letter-spacing: -0.025em;
}

.md-typeset h1 {
  color: var(--kb-ink);
}

.md-typeset h2 {
  margin-top: 2.3em;
  padding-bottom: 0.38em;
  border-bottom: 1px solid var(--kb-line);
}

.md-typeset a:not(.md-button):not(.kb-track) {
  text-decoration-thickness: 0.07em;
  text-underline-offset: 0.14em;
}

.md-typeset table:not([class]) {
  display: table;
  width: 100%;
  border: 1px solid var(--kb-line);
  border-radius: 0.7rem;
  overflow: hidden;
  box-shadow: 0 8px 28px rgba(15, 23, 42, 0.04);
}

.md-typeset table:not([class]) th {
  background: rgba(79, 70, 229, 0.08);
  font-weight: 700;
}

.md-typeset table:not([class]) tr:hover td {
  background: rgba(8, 145, 178, 0.045);
}

.md-typeset code {
  border-radius: 0.32rem;
}

.md-typeset .admonition,
.md-typeset details {
  border-radius: 0.75rem;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.05);
}

.kb-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(16rem, 0.75fr);
  gap: 2rem;
  align-items: center;
  min-height: 31rem;
  margin: -1.2rem -1.2rem 2rem;
  padding: clamp(2.2rem, 6vw, 5rem);
  overflow: hidden;
  color: #fff;
  border-radius: 0 0 2rem 2rem;
  background:
    radial-gradient(circle at 82% 18%, rgba(34, 211, 238, 0.28), transparent 26%),
    radial-gradient(circle at 12% 90%, rgba(129, 140, 248, 0.30), transparent 30%),
    linear-gradient(135deg, #080d1d 0%, #1e1b4b 46%, #164e63 100%);
  box-shadow: 0 30px 70px rgba(30, 41, 59, 0.22);
}

.kb-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.16;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.18) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: linear-gradient(to right, #000, transparent 72%);
}

.kb-hero__content,
.kb-hero__signal {
  position: relative;
  z-index: 1;
}

.kb-hero .kb-eyebrow {
  display: inline-flex;
  margin-bottom: 1rem;
  padding: 0.38rem 0.7rem;
  color: #a5f3fc;
  font-size: 0.63rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  border: 1px solid rgba(165, 243, 252, 0.28);
  border-radius: 999px;
  background: rgba(8, 145, 178, 0.12);
}

.kb-hero h1 {
  max-width: 46rem;
  margin: 0 0 1.1rem;
  color: #fff;
  font-size: clamp(2rem, 4.7vw, 4.1rem);
  line-height: 1.08;
  letter-spacing: -0.055em;
}

.kb-hero p {
  max-width: 43rem;
  margin-bottom: 1.8rem;
  color: #cbd5e1;
  font-size: clamp(0.88rem, 1.5vw, 1.08rem);
}

.kb-hero .md-button {
  margin: 0.2rem 0.45rem 0.2rem 0;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.44);
  border-radius: 999px;
}

.kb-hero .md-button--primary {
  color: #111827;
  border-color: #67e8f9;
  background: #67e8f9;
}

.kb-hero__signal {
  width: min(24vw, 18rem);
  aspect-ratio: 1;
  justify-self: center;
}

.kb-signal__core {
  position: absolute;
  inset: 33%;
  display: grid;
  place-items: center;
  color: #ecfeff;
  font-size: 1rem;
  font-weight: 800;
  border: 1px solid rgba(103, 232, 249, 0.66);
  border-radius: 50%;
  background: rgba(8, 145, 178, 0.24);
  box-shadow: 0 0 46px rgba(34, 211, 238, 0.35);
}

.kb-signal__ring {
  position: absolute;
  border: 1px solid rgba(165, 243, 252, 0.26);
  border-radius: 50%;
}

.kb-signal__ring--one { inset: 17%; }
.kb-signal__ring--two { inset: 1%; border-style: dashed; }

.kb-token {
  position: absolute;
  padding: 0.3rem 0.58rem;
  color: #cffafe;
  font-size: 0.58rem;
  font-weight: 700;
  border: 1px solid rgba(165, 243, 252, 0.32);
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.72);
}

.kb-token--a { top: 7%; left: 8%; }
.kb-token--b { top: 30%; right: -2%; }
.kb-token--c { bottom: 6%; left: 24%; }

.kb-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.8rem;
  margin: 0 0 2.5rem;
}

.kb-stat {
  display: flex;
  flex-direction: column;
  padding: 1.2rem 1.25rem;
  border: 1px solid var(--kb-line);
  border-radius: 0.95rem;
  background: var(--kb-card);
  box-shadow: 0 10px 32px rgba(15, 23, 42, 0.05);
}

.kb-stat strong {
  color: var(--kb-ink);
  font-size: 1.55rem;
  line-height: 1.2;
}

.kb-stat span {
  margin-top: 0.2rem;
  color: var(--kb-muted);
  font-size: 0.68rem;
}

.md-typeset .grid.cards > ul > li,
.md-typeset .grid.cards > ol > li {
  border-color: var(--kb-line);
  border-radius: 0.95rem;
  background: var(--kb-card);
  box-shadow: 0 12px 34px rgba(15, 23, 42, 0.045);
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.md-typeset .grid.cards > ul > li:hover,
.md-typeset .grid.cards > ol > li:hover {
  transform: translateY(-3px);
  border-color: rgba(8, 145, 178, 0.42);
  box-shadow: 0 18px 42px rgba(15, 23, 42, 0.09);
}

.kb-track-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
}

.kb-track {
  position: relative;
  display: grid;
  grid-template-columns: 2.7rem 1fr;
  grid-template-rows: auto auto;
  column-gap: 0.9rem;
  padding: 1.15rem 1.25rem;
  overflow: hidden;
  color: var(--kb-ink) !important;
  text-decoration: none !important;
  border: 1px solid var(--kb-line);
  border-radius: 0.95rem;
  background: var(--kb-card);
  transition: transform 160ms ease, border-color 160ms ease;
}

.kb-track::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 3px;
  background: linear-gradient(#6366f1, #06b6d4);
}

.kb-track:hover {
  transform: translateX(4px);
  border-color: rgba(8, 145, 178, 0.42);
}

.kb-track__num {
  grid-row: 1 / 3;
  align-self: center;
  color: #6366f1;
  font-size: 1.05rem;
  font-weight: 850;
}

.kb-track strong {
  font-size: 0.78rem;
}

.kb-track small {
  margin-top: 0.18rem;
  color: var(--kb-muted);
  font-size: 0.61rem;
}

.kb-section-lead {
  margin: 1rem 0 1.5rem;
  padding: 1.15rem 1.3rem;
  color: var(--kb-muted);
  border-left: 3px solid #06b6d4;
  border-radius: 0 0.75rem 0.75rem 0;
  background: linear-gradient(90deg, rgba(8, 145, 178, 0.10), transparent);
}

.kb-inline-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 1rem 0 1.6rem;
}

.kb-inline-stats span {
  padding: 0.34rem 0.68rem;
  color: var(--kb-muted);
  font-size: 0.64rem;
  border: 1px solid var(--kb-line);
  border-radius: 999px;
  background: var(--kb-card);
}

.kb-footer-cta {
  margin-top: 3rem;
  padding: clamp(1.4rem, 4vw, 2.4rem);
  text-align: center;
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 1.2rem;
  background:
    radial-gradient(circle at 90% 10%, rgba(34, 211, 238, 0.12), transparent 28%),
    linear-gradient(135deg, rgba(79, 70, 229, 0.10), rgba(8, 145, 178, 0.08));
}

.kb-footer-cta h3 {
  margin-top: 0;
}

.kb-footer-cta .md-button {
  margin: 0.25rem;
  border-radius: 999px;
}

@media screen and (max-width: 60rem) {
  .kb-hero {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .kb-hero__signal {
    display: none;
  }
}

@media screen and (max-width: 44rem) {
  .kb-hero {
    margin-inline: -0.8rem;
    padding: 2.4rem 1.35rem 2.8rem;
    border-radius: 0 0 1.25rem 1.25rem;
  }

  .kb-hero h1 {
    font-size: 2.15rem;
  }

  .kb-stats,
  .kb-track-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media screen and (max-width: 28rem) {
  .kb-stats,
  .kb-track-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .kb-track,
  .md-typeset .grid.cards > ul > li,
  .md-typeset .grid.cards > ol > li { transition: none; }
}