:root {
  --rk-bg: var(--bg, #f5f7ff);
  --rk-surface: var(--surface, #ffffff);
  --rk-surface-soft: var(--surface-2, #f8faff);
  --rk-text: var(--text, #111b3a);
  --rk-muted: var(--muted, #5e6b86);
  --rk-line: var(--line, #d9e2f5);
  --rk-brand: var(--brand, #1148d6);
  --rk-brand-2: var(--brand-2, #2f69ff);
  --rk-chip: #ecf2ff;
  --rk-popular: #d9480f;
  --rk-shadow: 0 12px 28px rgba(20, 40, 110, 0.08);
  --rk-radius-lg: 20px;
  --rk-radius-md: 14px;
  --rk-radius-sm: 10px;
  --rk-content: min(1200px, calc(100% - 2rem));
}

[data-theme="dark"] {
  --rk-bg: #0a1021;
  --rk-surface: #141f3a;
  --rk-surface-soft: #1a2748;
  --rk-text: #e8efff;
  --rk-muted: #9cafd2;
  --rk-line: #2e416a;
  --rk-brand: #7da2ff;
  --rk-brand-2: #5e88ff;
  --rk-chip: #1f3058;
  --rk-popular: #ff9966;
  --rk-shadow: 0 14px 30px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 0% 0%, color-mix(in srgb, var(--rk-brand) 12%, transparent), transparent 34%),
    radial-gradient(circle at 100% 0%, color-mix(in srgb, var(--rk-brand-2) 10%, transparent), transparent 30%),
    var(--rk-bg);
  color: var(--rk-text);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
}

a {
  color: inherit;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

p {
  margin: 0;
  color: var(--rk-muted);
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -100px;
  z-index: 120;
  background: var(--rk-brand);
  color: #fff;
  text-decoration: none;
  border-radius: var(--rk-radius-sm);
  padding: 0.55rem 0.75rem;
}

.skip-link:focus {
  top: 10px;
}

.rk-header {
  position: sticky;
  top: 0;
  z-index: 90;
  border-bottom: 1px solid color-mix(in srgb, var(--rk-line) 86%, transparent);
  background: color-mix(in srgb, var(--rk-surface) 86%, transparent);
  backdrop-filter: blur(10px);
}

.rk-header-inner {
  width: var(--rk-content);
  margin-inline: auto;
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.7rem;
}

.rk-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  font-weight: 800;
}

.rk-brand-dot {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: linear-gradient(120deg, var(--rk-brand), var(--rk-brand-2));
}

.rk-actions {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.rk-btn,
.rk-nav-toggle,
.rk-theme-toggle {
  border: 1px solid var(--rk-line);
  border-radius: var(--rk-radius-sm);
  background: var(--rk-surface);
  color: var(--rk-text);
  font: inherit;
  font-weight: 700;
  padding: 0.46rem 0.7rem;
  cursor: pointer;
}

.rk-nav-shell {
  width: var(--rk-content);
  margin-inline: auto;
}

.rk-nav {
  display: none;
  flex-direction: column;
  gap: 0.3rem;
  padding-bottom: 0.7rem;
}

.rk-nav.is-open {
  display: flex;
}

.rk-nav a {
  text-decoration: none;
  padding: 0.46rem 0.62rem;
  border-radius: var(--rk-radius-sm);
  border: 1px solid transparent;
  font-weight: 600;
}

.rk-nav a:hover,
.rk-nav a:focus-visible,
.rk-nav a[aria-current="page"] {
  border-color: var(--rk-line);
  background: color-mix(in srgb, var(--rk-brand) 10%, var(--rk-surface));
}

.rk-page {
  width: var(--rk-content);
  margin-inline: auto;
  padding: 1.05rem 0 2.2rem;
}

.rk-section {
  margin-top: 1rem;
}

.rk-hero {
  border: 1px solid var(--rk-line);
  border-radius: var(--rk-radius-lg);
  background: linear-gradient(130deg, color-mix(in srgb, var(--rk-surface) 88%, transparent), color-mix(in srgb, var(--rk-brand) 8%, var(--rk-surface)));
  box-shadow: var(--rk-shadow);
  padding: 1.2rem;
}

.rk-eyebrow {
  text-transform: uppercase;
  font-size: 0.74rem;
  letter-spacing: 0.09em;
  font-weight: 800;
  color: color-mix(in srgb, var(--rk-brand) 78%, var(--rk-text));
}

.rk-hero h1 {
  margin-top: 0.45rem;
  font-size: clamp(1.8rem, 4.2vw, 2.75rem);
}

.rk-hero p {
  margin-top: 0.7rem;
  max-width: 76ch;
}

.rk-breadcrumbs {
  margin-top: 0.85rem;
  font-size: 0.86rem;
  color: var(--rk-muted);
}

.rk-breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.36rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.rk-breadcrumbs li + li::before {
  content: ">";
  margin-right: 0.36rem;
  color: var(--rk-muted);
}

.rk-disclosure,
.rk-disclaimer,
.rk-how,
.rk-faq {
  border: 1px solid var(--rk-line);
  border-radius: var(--rk-radius-md);
  background: var(--rk-surface);
  box-shadow: var(--rk-shadow);
  padding: 0.9rem;
}

.rk-disclosure strong,
.rk-disclaimer strong {
  color: var(--rk-text);
}

.rk-toolbar {
  border: 1px solid var(--rk-line);
  border-radius: var(--rk-radius-md);
  background: var(--rk-surface);
  box-shadow: var(--rk-shadow);
  padding: 0.9rem;
}

.rk-controls {
  display: grid;
  gap: 0.65rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  align-items: end;
}

.rk-field {
  display: grid;
  gap: 0.28rem;
}

.rk-label {
  font-size: 0.87rem;
  font-weight: 700;
}

.rk-input,
.rk-select {
  border: 1px solid var(--rk-line);
  border-radius: var(--rk-radius-sm);
  background: var(--rk-surface-soft);
  color: var(--rk-text);
  padding: 0.56rem 0.62rem;
  font: inherit;
}

.rk-check {
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
  border: 1px solid var(--rk-line);
  border-radius: var(--rk-radius-sm);
  padding: 0.52rem 0.62rem;
  background: var(--rk-surface-soft);
  font-size: 0.9rem;
}

.rk-results-meta {
  margin-top: 0.64rem;
  font-size: 0.9rem;
  color: var(--rk-muted);
}

.rk-live-status {
  margin-top: 0.4rem;
  font-size: 0.84rem;
  color: color-mix(in srgb, var(--rk-brand) 60%, var(--rk-text));
  background: color-mix(in srgb, var(--rk-brand) 8%, var(--rk-surface));
  border: 1px solid color-mix(in srgb, var(--rk-brand) 20%, var(--rk-line));
  border-radius: var(--rk-radius-sm);
  padding: 0.44rem 0.58rem;
}

.rk-grid {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.rk-card {
  border: 1px solid var(--rk-line);
  border-radius: var(--rk-radius-md);
  background: var(--rk-surface);
  box-shadow: var(--rk-shadow);
  padding: 0.9rem;
  display: grid;
  gap: 0.6rem;
  min-width: 0;
  scroll-margin-top: 140px;
}

.rk-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.rk-rank {
  width: 30px;
  height: 30px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--rk-brand) 16%, var(--rk-surface));
  border: 1px solid var(--rk-line);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.86rem;
}

.rk-badge {
  border-radius: 999px;
  background: color-mix(in srgb, var(--rk-popular) 12%, var(--rk-surface));
  border: 1px solid color-mix(in srgb, var(--rk-popular) 35%, var(--rk-line));
  color: var(--rk-popular);
  font-size: 0.74rem;
  padding: 0.18rem 0.45rem;
  font-weight: 700;
}

.rk-name {
  font-size: 1.1rem;
  overflow-wrap: anywhere;
}

.rk-highlight {
  font-size: 0.92rem;
  overflow-wrap: anywhere;
}

.rk-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem;
}

.rk-cols h4 {
  margin: 0 0 0.25rem;
  font-size: 0.86rem;
}

.rk-list {
  margin: 0;
  padding-left: 1rem;
  display: grid;
  gap: 0.2rem;
  color: var(--rk-muted);
  font-size: 0.88rem;
  overflow-wrap: anywhere;
}

.rk-metrics {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.23rem;
}

.rk-metrics li {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  border-bottom: 1px dashed color-mix(in srgb, var(--rk-line) 75%, transparent);
  padding-bottom: 0.18rem;
  font-size: 0.86rem;
}

.rk-metrics li span,
.rk-metrics li strong {
  overflow-wrap: anywhere;
}

.rk-meta-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.6rem;
  color: var(--rk-muted);
  font-size: 0.82rem;
}

.rk-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  border-radius: var(--rk-radius-sm);
  border: 1px solid transparent;
  background: linear-gradient(120deg, var(--rk-brand), var(--rk-brand-2));
  color: #fff;
  font-weight: 700;
  font-size: 0.88rem;
  padding: 0.53rem 0.7rem;
}

.rk-table-wrap {
  border: 1px solid var(--rk-line);
  border-radius: var(--rk-radius-md);
  background: var(--rk-surface);
  box-shadow: var(--rk-shadow);
  overflow: auto;
}

.rk-table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
}

.rk-table th,
.rk-table td {
  text-align: left;
  padding: 0.62rem;
  border-bottom: 1px solid color-mix(in srgb, var(--rk-line) 70%, transparent);
  vertical-align: top;
  font-size: 0.9rem;
}

.rk-table th {
  color: var(--rk-text);
  background: color-mix(in srgb, var(--rk-brand) 6%, var(--rk-surface));
  font-weight: 800;
}

.rk-table td {
  color: var(--rk-muted);
}

.rk-empty {
  border: 1px dashed var(--rk-line);
  border-radius: var(--rk-radius-md);
  background: var(--rk-surface);
  padding: 1rem;
  color: var(--rk-muted);
}

.rk-accordion details {
  border: 1px solid var(--rk-line);
  border-radius: var(--rk-radius-sm);
  background: var(--rk-surface-soft);
  padding: 0.6rem;
}

.rk-accordion details + details {
  margin-top: 0.6rem;
}

.rk-accordion summary {
  cursor: pointer;
  font-weight: 700;
}

.rk-accordion p,
.rk-accordion ul {
  margin-top: 0.55rem;
}

.rk-accordion ul {
  padding-left: 1rem;
  color: var(--rk-muted);
}

.rk-footer {
  margin-top: 1.3rem;
  border-top: 1px solid color-mix(in srgb, var(--rk-line) 78%, transparent);
}

.rk-footer-inner {
  width: var(--rk-content);
  margin-inline: auto;
  padding: 1rem 0 1.5rem;
  color: var(--rk-muted);
  font-size: 0.86rem;
}

.rk-links {
  margin-top: 0.42rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.rk-links a {
  text-decoration: none;
  border: 1px solid var(--rk-line);
  border-radius: 999px;
  padding: 0.3rem 0.52rem;
  background: var(--rk-surface);
}

@media (min-width: 980px) {
  .rk-nav-toggle {
    display: none;
  }

  .rk-nav {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.2rem;
    padding-bottom: 0;
    align-items: center;
  }

  .rk-nav-shell {
    width: var(--rk-content);
    margin-inline: auto;
  }

  .rk-header-inner {
    min-height: 82px;
  }

  .rk-hero {
    padding: 1.45rem;
  }
}

@media (max-width: 620px) {
  .rk-cols {
    grid-template-columns: 1fr;
  }

  .rk-cta {
    width: 100%;
  }
}