:root {
  color-scheme: dark;
  --bg: #050505;
  --fg: #f4f4f4;
  --muted: #8d8d8d;
  --line: #1c1c1c;
  --card: #0c0c0c;
  --btn: #f4f4f4;
  --btn-fg: #050505;
  --dot-r: #ff5f56;
  --dot-y: #ffbd2e;
  --dot-g: #27c93f;
  --mark: #c8ff3d;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.5 ui-sans-serif, system-ui, Segoe UI, sans-serif;
}
a { color: inherit; }
img { max-width: 100%; }

.wrap { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.muted { color: var(--muted); }
.mono, code, pre, kbd {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

header.top {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(5,5,5,.92);
  backdrop-filter: blur(10px);
}
.top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
}
.logo {
  text-decoration: none;
  font-weight: 650;
  letter-spacing: -.03em;
  white-space: nowrap;
}
.logo span { color: var(--muted); }
nav.links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 18px;
}
nav.links a {
  text-decoration: none;
  color: var(--muted);
  font-size: 14px;
}
nav.links a:hover, nav.links a[aria-current="page"] { color: var(--fg); }
.lang { font-variant: small-caps; letter-spacing: .08em; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  padding: 0 16px;
  border-radius: 999px;
  background: var(--btn);
  color: var(--btn-fg);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  border: 1px solid var(--btn);
}
.btn:hover { filter: brightness(1.06); }
.btn.ghost {
  background: transparent;
  color: var(--fg);
  border-color: var(--line);
}

.hero {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 48px;
  align-items: center;
  padding: 72px 0 56px;
}
.mark {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--fg);
}
.mark i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--mark);
}
h1 {
  margin: 0 0 16px;
  font-size: clamp(2.1rem, 4.6vw, 3.6rem);
  line-height: 1.05;
  letter-spacing: -.045em;
  font-weight: 650;
}
.lead { margin: 0 0 28px; max-width: 38rem; color: var(--muted); font-size: 1.05rem; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 18px; }
.fine { font-size: 13px; }

.term {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
}
.term-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
}
.term-bar b { color: var(--fg); font-weight: 500; margin-left: auto; }
.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot.r { background: var(--dot-r); }
.dot.y { background: var(--dot-y); }
.dot.g { background: var(--dot-g); }
.term pre {
  margin: 0;
  padding: 18px 16px 20px;
  font-size: 12.5px;
  line-height: 1.55;
  white-space: pre-wrap;
  color: #d7d7d7;
}
.term .ok { color: var(--mark); }

.demo-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}
.demo-tabs {
  display: flex;
  gap: 2px;
  padding: 0 10px;
  border-bottom: 1px solid var(--line);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
}
.demo-tabs label {
  padding: 10px 12px;
  color: var(--muted);
  cursor: pointer;
  border-bottom: 1px solid transparent;
  margin-bottom: -1px;
}
.demo-panel { display: none; }
#ru-d1:checked ~ .demo-tabs label[for="ru-d1"],
#ru-d2:checked ~ .demo-tabs label[for="ru-d2"],
#ru-d3:checked ~ .demo-tabs label[for="ru-d3"],
#en-d1:checked ~ .demo-tabs label[for="en-d1"],
#en-d2:checked ~ .demo-tabs label[for="en-d2"],
#en-d3:checked ~ .demo-tabs label[for="en-d3"] {
  color: var(--fg);
  border-bottom-color: var(--fg);
}
#ru-d1:checked ~ .demo-panels .p1,
#ru-d2:checked ~ .demo-panels .p2,
#ru-d3:checked ~ .demo-panels .p3,
#en-d1:checked ~ .demo-panels .p1,
#en-d2:checked ~ .demo-panels .p2,
#en-d3:checked ~ .demo-panels .p3 { display: block; }
.demo-user {
  display: flex;
  gap: 10px;
  margin: 0;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.45;
}
.demo-user span {
  flex: 0 0 auto;
  margin-top: 2px;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10px;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.demo-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.demo-col {
  padding: 14px 16px 16px;
  min-height: 160px;
}
.demo-col + .demo-col { border-left: 1px solid var(--line); }
.demo-who {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 10px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
}
.demo-who i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mark);
}
.demo-who.them i { background: #ff5f56; }
.demo-col p, .demo-col pre {
  margin: 0;
  padding: 0;
  font-size: 12.5px;
  line-height: 1.5;
  white-space: pre-wrap;
}
.demo-col.them p { color: var(--muted); font-style: italic; }

@media (max-width: 900px) {
  .demo-split { grid-template-columns: 1fr; }
  .demo-col + .demo-col { border-left: 0; border-top: 1px solid var(--line); }
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
}
.stat {
  padding: 22px 20px;
  border-right: 1px solid var(--line);
}
.stat:last-child { border-right: 0; }
.stat strong {
  display: block;
  font-size: 1.55rem;
  letter-spacing: -.04em;
  margin-bottom: 4px;
}
.stat span { color: var(--muted); font-size: 13px; }

section { padding: 72px 0; }
.kicker {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
}
h2 {
  margin: 0 0 12px;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: -.03em;
}
.sub { margin: 0 0 32px; max-width: 40rem; color: var(--muted); }

.cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px 20px;
}
.card h3 { margin: 0 0 8px; font-size: 1.05rem; letter-spacing: -.02em; }
.card p { margin: 0; color: var(--muted); font-size: 14.5px; }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.step {
  border-top: 1px solid var(--line);
  padding: 18px 0 0;
}
.step .n {
  display: block;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: .12em;
}
.step h3 { margin: 0 0 8px; font-size: 1.15rem; }
.step p { margin: 0; color: var(--muted); }

.price-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 14px; }
table.rates {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
}
table.rates th, table.rates td {
  text-align: left;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}
table.rates th { color: var(--muted); font-weight: 500; }
table.rates tr:last-child td { border-bottom: 0; }
.packs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.pack {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  background: var(--card);
}
.pack strong { display: block; font-size: 1.4rem; letter-spacing: -.03em; }
.pack span { color: var(--muted); font-size: 13px; }

.note {
  margin-top: 18px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--muted);
  font-size: 14px;
}

#pricing { scroll-margin-top: 80px; }

.page { padding: 48px 0 80px; }
.page h1 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); }
.prose { max-width: 760px; }
.prose h2 { margin-top: 40px; font-size: 1.25rem; }
.prose h3 { margin: 28px 0 8px; font-size: 1.05rem; }
.prose p, .prose li { color: var(--fg); }
.prose a { color: var(--fg); text-underline-offset: 3px; }
.prose a.btn { color: var(--btn-fg); text-decoration: none; }
.prose a.btn.ghost { color: var(--fg); }
.toc {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  margin: 20px 0 28px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}
.toc a { color: var(--muted); text-decoration: none; font-size: 14px; }
.toc a:hover { color: var(--fg); }
pre.block, .card code, .prose code {
  background: var(--card);
}
.prose code {
  padding: .1em .35em;
  border-radius: 4px;
  font-size: .9em;
  overflow-wrap: anywhere;
}
pre.block {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 16px;
  overflow-x: auto;
}
.model-id-list {
  list-style: none;
  margin: 16px 0 28px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
}
.model-id-list li {
  display: grid;
  gap: 4px;
  padding: 10px 14px;
  border-top: 1px solid var(--line);
}
.model-id-list li:first-child { border-top: 0; }
.model-id-list code {
  padding: .1em .35em;
  border-radius: 4px;
  font-size: 13px;
  word-break: break-all;
  background: var(--card);
}
.model-id-list span {
  color: var(--muted);
  font-size: 13.5px;
}
.stub {
  margin-top: 28px;
  padding: 48px 24px;
  border: 1px dashed var(--line);
  border-radius: 14px;
  text-align: center;
  color: var(--muted);
}
.crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 8px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--muted);
}
.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:hover { color: var(--fg); }
.crumbs li:not(:last-child)::after {
  content: "/";
  margin-left: 8px;
  color: var(--line);
}
.meta-date {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 13px;
}
.post-list {
  list-style: none;
  margin: 0 0 36px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
}
.post-list li { border-top: 1px solid var(--line); }
.post-list li:first-child { border-top: 0; }
.post-list a {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  text-decoration: none;
}
.post-list a:hover { background: var(--card); }
.post-list strong { font-weight: 600; }
.post-list span { color: var(--muted); font-size: 14px; }
.faq {
  margin-top: 40px;
  border-top: 1px solid var(--line);
  padding-top: 8px;
}
.faq-item {
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
}
.faq-item h3 {
  margin: 0 0 8px;
  font-size: 1rem;
}
.faq-item p { margin: 0; color: var(--muted); }
.more {
  display: grid;
  gap: 8px;
  margin-top: 36px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}
.more a { color: var(--fg); }
.flow-svg {
  width: 100%;
  height: auto;
  margin: 8px 0 24px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--card);
}

footer.site {
  border-top: 1px solid var(--line);
  padding: 28px 0 40px;
  color: var(--muted);
  font-size: 13px;
}
.foot {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: space-between;
}
.foot nav { display: flex; flex-wrap: wrap; gap: 8px 16px; }
.foot a { color: var(--muted); text-decoration: none; }
.foot a:hover { color: var(--fg); }

.model-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 24px 0 8px;
}
.model-card {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px 18px 16px;
  background: var(--card);
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 100%;
}
.model-card header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}
.model-card h3 {
  margin: 0;
  font-size: 1.05rem;
  letter-spacing: -.02em;
}
.model-card .badge {
  flex: 0 0 auto;
  font-size: 11px;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--bg);
  background: var(--fg);
  border-radius: 999px;
  padding: 3px 8px;
}
.model-id { margin: 0; color: var(--muted); font-size: 12px; word-break: break-all; }
.model-card p { margin: 0; color: var(--muted); font-size: 14px; }
.feats {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.feats li {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px 8px;
  font-size: 12px;
  color: var(--fg);
}
.price-lines {
  margin: 4px 0 0;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 6px;
  font-size: 13px;
}
.price-lines div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}
.price-lines dt { color: var(--muted); }
.price-lines dd { margin: 0; font-variant-numeric: tabular-nums; }

@media (max-width: 900px) {
  .hero, .cards, .steps, .price-grid, .stats, .model-grid { grid-template-columns: 1fr; }
  .stat { border-right: 0; border-bottom: 1px solid var(--line); }
  .stat:last-child { border-bottom: 0; }
  .packs { grid-template-columns: repeat(2, 1fr); }
  .hero { padding-top: 40px; }
  section { padding: 48px 0; }
}
@media (max-width: 640px) {
  .wrap { width: min(1120px, calc(100% - 28px)); }
  .top-inner { align-items: flex-start; padding: 10px 0; }
  nav.links { max-width: 70%; }
  .packs { grid-template-columns: 1fr 1fr; }
}