/* Визуально в духе тёмной темы Stake: панели #213743, акцент #00e701, без копирования брендинга */
:root {
  color-scheme: dark;
  --stake-bg-deep: #0a0e11;
  --stake-bg: #0f2123;
  --stake-surface: #213743;
  --stake-border: rgba(85, 112, 134, 0.45);
  --stake-border-soft: rgba(47, 69, 83, 0.6);
  --stake-text: #ffffff;
  --stake-text-muted: #b1bad3;
  --stake-text-dim: #6e8196;
  --stake-green: #00e701;
  --stake-green-dim: #00b801;
  --stake-green-glow: rgba(0, 231, 1, 0.22);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.65;
  color: var(--stake-text-muted);
  background-color: var(--stake-bg-deep);
  background-image:
    radial-gradient(ellipse 120% 80% at 50% -30%, var(--stake-green-glow), transparent 55%),
    linear-gradient(180deg, var(--stake-bg) 0%, var(--stake-bg-deep) 45%);
  -webkit-font-smoothing: antialiased;
}

@media (min-width: 640px) {
  body {
    font-size: 16px;
  }
}

a:focus-visible,
button:focus-visible,
.table-wrap:focus-visible {
  outline: 2px solid var(--stake-green);
  outline-offset: 2px;
}

.top-accent {
  height: 3px;
  width: 100%;
  background: linear-gradient(90deg, var(--stake-green-dim), var(--stake-green), var(--stake-green-dim));
  box-shadow: 0 0 24px var(--stake-green-glow);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(15, 33, 35, 0.92);
  border-bottom: 1px solid var(--stake-border-soft);
  backdrop-filter: blur(14px);
}

.site-header__inner {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0.65rem 1rem;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 0.5rem 0.75rem;
}

@media (min-width: 768px) {
  .site-header__inner {
    grid-template-columns: 1fr auto auto;
    gap: 0.5rem 1rem;
  }
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.site-header__logo-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--stake-green);
  box-shadow: 0 0 12px var(--stake-green-glow);
  flex-shrink: 0;
}

.site-header__brand-text {
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--stake-text);
  text-transform: lowercase;
}

.site-header__brand-tld {
  font-weight: 600;
  color: var(--stake-text-dim);
}

.site-header__note {
  grid-column: 1 / -1;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--stake-text-dim);
  margin: 0;
}

@media (min-width: 768px) {
  .site-header__note {
    grid-column: 3;
    text-align: right;
  }
}

.btn-play {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.35rem;
  font-family: inherit;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: #071208;
  background: linear-gradient(180deg, #2cff2c, var(--stake-green) 45%, var(--stake-green-dim));
  border-radius: var(--radius-sm);
  border: 1px solid rgba(0, 231, 1, 0.45);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.2) inset,
    0 2px 0 rgba(0, 0, 0, 0.25),
    0 0 18px var(--stake-green-glow);
  transition: filter 0.15s ease, transform 0.08s ease;
  white-space: nowrap;
}

.btn-play:hover {
  filter: brightness(1.07);
}

.btn-play:active {
  transform: translateY(1px);
  filter: brightness(0.98);
}

.btn-play--header {
  justify-self: end;
  padding: 0.4rem 0.95rem;
  font-size: 0.625rem;
}

.btn-play--hero {
  width: 100%;
  max-width: 22rem;
  padding: 0.9rem 1.85rem;
  font-size: 0.875rem;
}

.article__cta {
  margin: 0 0 1.25rem;
}

.nav-toc {
  max-width: 72rem;
  margin: 0 auto;
  padding: 1rem;
}

@media (min-width: 640px) {
  .nav-toc {
    padding: 1.25rem 1.5rem;
  }
}

.nav-toc__box {
  border-radius: var(--radius-md);
  border: 1px solid var(--stake-border);
  background: var(--stake-surface);
  padding: 1rem 1.1rem;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
}

@media (min-width: 640px) {
  .nav-toc__box {
    padding: 1.15rem 1.25rem;
  }
}

.nav-toc__label {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--stake-text-dim);
  margin: 0 0 0.85rem;
}

.nav-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.nav-toc__list a {
  display: inline-block;
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid transparent;
  padding: 0.4rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--stake-text-muted);
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

@media (min-width: 640px) {
  .nav-toc__list a {
    font-size: 0.8125rem;
    padding: 0.45rem 0.75rem;
  }
}

.nav-toc__list a:hover {
  background: rgba(0, 231, 1, 0.12);
  border-color: rgba(0, 231, 1, 0.35);
  color: var(--stake-text);
}

.main-shell {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 1rem 3rem;
}

@media (min-width: 640px) {
  .main-shell {
    padding: 0 1.5rem 4rem;
  }
}

.article-card {
  max-width: 65ch;
  margin: 0 auto;
  padding: 0 0 2rem;
  background: transparent;
}

.article__kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--stake-green);
  margin: 0 0 0.85rem;
}

.article__kicker::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--stake-green);
  border-radius: 1px;
  box-shadow: 0 0 8px var(--stake-green-glow);
}

.article__title {
  font-size: 1.625rem;
  line-height: 1.15;
  font-weight: 800;
  color: var(--stake-text);
  margin: 0;
  letter-spacing: -0.035em;
}

@media (min-width: 640px) {
  .article__title {
    font-size: 2.375rem;
  }
}

.article__hero {
  margin: 0 0 1.25rem;
}

.article__hero-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--stake-border);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

.article__header {
  padding-top: 1.5rem;
  padding-bottom: 1.75rem;
  border-bottom: 1px solid var(--stake-border-soft);
  margin-bottom: 0.5rem;
}

@media (min-width: 640px) {
  .article__header {
    padding-top: 2rem;
    padding-bottom: 2.25rem;
  }
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

section {
  scroll-margin-top: 5rem;
  border-top: 1px solid var(--stake-border-soft);
  padding-top: 1.75rem;
  margin-top: 2rem;
}

section:first-of-type {
  border-top: 0;
  padding-top: 1.25rem;
  margin-top: 0;
}

@media (min-width: 640px) {
  section {
    scroll-margin-top: 5.5rem;
    padding-top: 2rem;
    margin-top: 2.25rem;
  }

  section:first-of-type {
    padding-top: 1.5rem;
  }
}

section h2 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--stake-text);
  margin: 0 0 1rem;
  letter-spacing: -0.025em;
  padding-left: 0.65rem;
  border-left: 3px solid var(--stake-green);
}

@media (min-width: 640px) {
  section h2 {
    font-size: 1.375rem;
    padding-left: 0.85rem;
  }
}

section p {
  margin: 0 0 1rem;
}

section p:last-child {
  margin-bottom: 0;
}

section ul {
  margin: 0 0 1rem;
  padding-left: 1.25rem;
}

@media (min-width: 640px) {
  section ul {
    padding-left: 1.5rem;
  }
}

section li {
  margin-bottom: 0.5rem;
  color: var(--stake-text-muted);
}

section li::marker {
  color: var(--stake-green-dim);
}

section li:last-child {
  margin-bottom: 0;
}

.faq-list {
  margin: 0;
}

.faq-q {
  font-weight: 600;
  color: var(--stake-text);
  margin: 1.35rem 0 0.4rem;
}

.faq-q:first-child {
  margin-top: 0;
}

.faq-a {
  margin: 0 0 0.15rem;
  padding: 0;
  color: var(--stake-text-muted);
}

.table-wrap {
  margin: 0 -0.25rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius-md);
  border: 1px solid var(--stake-border);
  background: var(--stake-surface);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

@media (min-width: 640px) {
  .table-wrap {
    margin: 0;
  }
}

.spec-table {
  width: 100%;
  min-width: 18rem;
  border-collapse: collapse;
  font-size: 0.8125rem;
  text-align: left;
}

@media (min-width: 640px) {
  .spec-table {
    font-size: 0.9375rem;
  }
}

.spec-table thead th {
  padding: 0.85rem 1rem;
  color: var(--stake-text);
  font-weight: 700;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: rgba(0, 0, 0, 0.25);
  border-bottom: 1px solid var(--stake-border);
  white-space: nowrap;
}

.spec-table tbody th {
  padding: 0.7rem 1rem;
  color: var(--stake-text);
  font-weight: 600;
  vertical-align: top;
  border-bottom: 1px solid var(--stake-border-soft);
  width: 34%;
  min-width: 9.5rem;
  hyphens: auto;
}

.spec-table tbody td {
  padding: 0.7rem 1rem;
  vertical-align: top;
  border-bottom: 1px solid var(--stake-border-soft);
  color: var(--stake-text-muted);
}

.spec-table tbody tr:last-child th,
.spec-table tbody tr:last-child td {
  border-bottom: none;
}

.spec-table tbody tr:nth-child(even) {
  background: rgba(0, 0, 0, 0.12);
}

.site-footer {
  border-top: 1px solid var(--stake-border-soft);
  padding: 1.75rem 1rem;
  text-align: center;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--stake-text-dim);
  background: rgba(10, 14, 17, 0.6);
}