$line{1px solid var(--border)}
$box{border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface)}
$label{font: 600 0.8rem/1 var(--mono); letter-spacing: 0.06em; text-transform: uppercase}
$muted{color: var(--muted)}
$nodeco{text-decoration: none}
$flex{display: flex; align-items: center}
$iflex{display: inline-flex; align-items: center}
$center{display: inline-grid; place-items: center}
$tc{color 0.2s, background-color 0.2s}

:root {
  --bg: #0b0f17; --surface: #111725; --surface-2: #172033; --border: #243049;
  --text: #e6eaf2; --muted: #a3adbf; --accent: #38bdf8; --accent-2: #a78bfa; --accent-ink: #0b0f17;
  --ok: #34d399; --warn: #fbbf24; --code-bg: #0d1420; --code-text: #e6edf3;
  --header-bg: rgb(11 15 23 / 0.78); --shadow: 0 10px 30px rgb(0 0 0 / 0.35);
  --font: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Consolas, monospace;
  --radius: 14px; --wrap: 80rem;
  color-scheme: dark;
}
[data-theme="light"] {
  --bg: #ffffff; --surface: #f6f8fb; --surface-2: #eef2f7; --border: #dbe2ec;
  --text: #0f172a; --muted: #475569; --accent: #0369a1; --accent-2: #6d28d9; --accent-ink: #ffffff;
  --ok: #047857; --warn: #b45309; --header-bg: rgb(255 255 255 / 0.86); --shadow: 0 10px 30px rgb(15 23 42 / 0.08);
  color-scheme: light;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-padding-top: 6rem; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 400 1rem/1.7 var(--font); text-rendering: optimizeLegibility; }
img, svg { max-width: 100%; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; &:hover { text-decoration-thickness: 2px; } }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
code, kbd, pre { font-family: var(--mono); }
h1, h2, h3, h4 { line-height: 1.25; letter-spacing: -0.015em; margin: 0 0 0.6em; }
p { margin: 0 0 1.1em; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 1.25rem; }
.skip { position: absolute; left: 1rem; top: -4rem; z-index: 50; padding: 0.6rem 1rem; background: var(--accent); color: var(--accent-ink); border-radius: 8px; font-weight: 600; &:focus { top: 1rem; } }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* header */
.site-header {
  position: sticky; top: 0.75rem; z-index: 30; padding: 0 1rem; margin-top: 0.75rem;
  .bar { max-width: calc(var(--wrap) + 1rem); margin: 0 auto; $flex; gap: 1rem; padding: 0.5rem 0.75rem; background: var(--header-bg); border: $line; border-radius: var(--radius); backdrop-filter: saturate(1.4) blur(14px); -webkit-backdrop-filter: saturate(1.4) blur(14px); box-shadow: var(--shadow); }
}
.brand { $iflex; gap: 0.6rem; color: var(--text); $nodeco; font-weight: 700; letter-spacing: -0.01em; min-height: 44px; svg { flex: none; } }
.main-nav {
  $flex; gap: 0.25rem; margin-left: auto;
  a { $muted; $nodeco; font-weight: 500; padding: 0.55rem 0.75rem; border-radius: 9px; transition: $tc; &:not(.btn):hover, &:not(.btn)[aria-current="page"] { color: var(--text); background: var(--surface-2); } }
  .btn { color: var(--accent-ink); margin-left: 0.4rem; &:hover, &[aria-current="page"] { color: var(--accent-ink); background-position: 100% 0; } }
}
.tools { $flex; gap: 0.25rem; }
.icon-btn { $center; width: 44px; height: 44px; border: 0; border-radius: 10px; background: transparent; $muted; cursor: pointer; transition: $tc; &:hover { color: var(--text); background: var(--surface-2); } }
.menu-btn { display: none; }

/* buttons */
.btn {
  $iflex; justify-content: center; gap: 0.5rem; min-height: 44px; padding: 0.7rem 1.25rem; border-radius: 11px; border: 1px solid transparent; font: 600 1rem/1.2 var(--font); $nodeco; cursor: pointer; transition: background-position 0.25s, background-color 0.2s, border-color 0.2s, color 0.2s;
  &-sm { min-height: 40px; padding: 0.5rem 0.95rem; font-size: 0.95rem; }
  &-primary {
    color: var(--accent-ink); background: linear-gradient(110deg, var(--accent), #818cf8 55%, var(--accent)) 0 0 / 200% 100%;
    [data-theme="light"] & { background: var(--accent); }
    &:hover { background-position: 100% 0; color: var(--accent-ink); }
    [data-theme="light"] &:hover { background: #075985; }
  }
  &-ghost { color: var(--text); border-color: var(--border); background: var(--surface); &:hover { border-color: var(--accent); color: var(--text); } }
  &[disabled] { opacity: 0.6; cursor: progress; }
}

/* sections */
.section { padding: 5rem 0; &-alt { background: var(--surface); border-block: $line; } }
.eyebrow { $iflex; gap: 0.5rem; $label; color: var(--accent); margin-bottom: 1rem; }
.section-head { max-width: 46rem; margin-bottom: 2.75rem; h2 { font-size: clamp(1.75rem, 3.2vw, 2.4rem); } }
.lead { font-size: 1.15rem; $muted; }
.muted { $muted; }
.pill { $iflex; gap: 0.5rem; padding: 0.35rem 0.8rem; border: $line; border-radius: 999px; background: var(--surface); $muted; font-size: 0.875rem; $nodeco; strong { color: var(--text); font-weight: 600; } }
a.pill:hover { border-color: var(--accent); }

/* hero */
.hero {
  position: relative; padding: 5.5rem 0 4.5rem; overflow: hidden;
  &::before { content: ""; position: absolute; inset: -40% -10% auto; height: 120%; background: radial-gradient(50% 45% at 30% 30%, rgb(56 189 248 / 0.16), transparent 70%), radial-gradient(40% 40% at 75% 20%, rgb(167 139 250 / 0.16), transparent 70%); pointer-events: none; }
  [data-theme="light"] &::before { opacity: 0.6; }
  .wrap { position: relative; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 3rem; align-items: center; }
  h1 { font-size: clamp(2.4rem, 5.2vw, 3.9rem); line-height: 1.06; letter-spacing: -0.035em; margin: 0.9rem 0 1.1rem; }
}
.grad { background: linear-gradient(100deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero .lead { max-width: 36rem; }
.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin: 1.75rem 0 1.5rem; }
.install { $flex; gap: 0.5rem; max-width: 36rem; padding: 0.35rem 0.35rem 0.35rem 1rem; background: var(--code-bg); border: $line; border-radius: 12px; color: var(--code-text); font: 0.9rem/1.4 var(--mono); code { flex: 1; overflow-x: auto; white-space: nowrap; } .copy { flex: none; } }
.facts { display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem; margin: 1.5rem 0 0; padding: 0; list-style: none; $muted; font-size: 0.925rem; li { $iflex; gap: 0.45rem; } svg { color: var(--ok); flex: none; } }

/* cards & grids */
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.25rem; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; }
.card {
  display: flex; flex-direction: column; padding: 1.5rem; background: var(--surface); border: $line; border-radius: var(--radius); transition: border-color 0.2s;
  .section-alt & { background: var(--bg); }
  &:hover { border-color: color-mix(in srgb, var(--accent) 55%, var(--border)); }
  h3 { font-size: 1.15rem; margin-bottom: 0.4rem; }
  p { $muted; margin-bottom: 1rem; }
  .code { margin-top: auto; }
  a.more { margin-top: 0.75rem; font-weight: 600; $nodeco; &:hover { text-decoration: underline; } }
}
.ico { $center; width: 42px; height: 42px; margin-bottom: 1rem; border-radius: 11px; background: color-mix(in srgb, var(--accent) 14%, transparent); color: var(--accent); svg { width: 22px; height: 22px; } }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 3rem; align-items: center; }
.check {
  list-style: none; padding: 0; margin: 0 0 1.5rem;
  li { position: relative; padding-left: 1.9rem; margin: 0 0 0.7rem; &::before { content: ""; position: absolute; left: 0; top: 0.3em; width: 1.15rem; height: 1.15rem; border-radius: 50%; background: color-mix(in srgb, var(--ok) 18%, transparent) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='none' stroke='%2334d399' stroke-width='3' stroke-linecap='round' stroke-linejoin='round' d='m6 12 4 4 8-8'/%3E%3C/svg%3E") center / 70% no-repeat; } }
  &.no li::before { background: color-mix(in srgb, var(--warn) 18%, transparent) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='none' stroke='%23fbbf24' stroke-width='3' stroke-linecap='round' d='M8 8l8 8M16 8l-8 8'/%3E%3C/svg%3E") center / 62% no-repeat; }
}
.steps {
  counter-reset: step; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.25rem; padding: 0; margin: 0; list-style: none;
  li { counter-increment: step; padding: 1.5rem; $box; &::before { content: counter(step); $center; width: 2rem; height: 2rem; margin-bottom: 0.9rem; border-radius: 50%; background: var(--accent); color: var(--accent-ink); font: 700 0.95rem var(--mono); } }
  h3 { font-size: 1.05rem; margin-bottom: 0.35rem; }
  p { $muted; margin: 0; }
}
.cta { text-align: center; padding: 3.5rem 1.5rem; border: $line; border-radius: calc(var(--radius) + 6px); background: radial-gradient(60% 120% at 50% 0%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 70%), var(--surface); h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); } .actions { justify-content: center; margin-bottom: 0; } }
.stat { font: 700 2rem/1.1 var(--font); letter-spacing: -0.02em; }
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; > div { padding: 1.25rem; $box; } span { display: block; $muted; font-size: 0.9rem; } }

/* code */
.code {
  position: relative; margin: 1.25rem 0 1.5rem; border: $line; border-radius: 12px; background: var(--code-bg); overflow: hidden;
  &-bar { $flex; justify-content: space-between; min-height: 2.5rem; padding: 0 0.5rem 0 1rem; border-bottom: 1px solid rgb(255 255 255 / 0.07); color: #9aa6b8; font: 600 0.75rem/1 var(--mono); letter-spacing: 0.04em; text-transform: uppercase; }
  pre { margin: 0; padding: 1rem 1.1rem; overflow-x: auto; color: var(--code-text); font-size: 0.875rem; line-height: 1.65; tab-size: 2; }
}
.copy { $iflex; gap: 0.35rem; min-height: 34px; padding: 0.3rem 0.65rem; border: 1px solid rgb(255 255 255 / 0.12); border-radius: 8px; background: rgb(255 255 255 / 0.04); color: #c9d3e1; font: 600 0.75rem/1 var(--mono); cursor: pointer; transition: background-color 0.2s, color 0.2s; &:hover { background: rgb(255 255 255 / 0.1); color: #fff; } }
.hljs-comment, .hljs-quote { color: #8b98a9; font-style: italic; }
.hljs-keyword, .hljs-selector-tag, .hljs-literal, .hljs-meta .hljs-keyword { color: #ff7b72; }
.hljs-string, .hljs-regexp, .hljs-meta .hljs-string { color: #a5d6ff; }
.hljs-number, .hljs-attr, .hljs-attribute, .hljs-property, .hljs-variable, .hljs-template-variable { color: #79c0ff; }
.hljs-selector-class, .hljs-selector-id, .hljs-selector-pseudo, .hljs-selector-attr, .hljs-title, .hljs-section, .hljs-name { color: #7ee787; }
.hljs-built_in, .hljs-type, .hljs-symbol, .hljs-bullet, .hljs-link { color: #ffa657; }
.hljs-tag, .hljs-punctuation { color: #c9d1d9; }
.hljs-deletion { color: #ffa198; } .hljs-addition { color: #7ee787; }

/* prose (docs / articles) */
.prose {
  min-width: 0; max-width: 48rem;
  h1 { font-size: clamp(2rem, 4vw, 2.6rem); letter-spacing: -0.03em; margin-bottom: 0.5em; }
  h1 + p { font-size: 1.15rem; $muted; }
  h2 { font-size: 1.55rem; margin-top: 2.6em; padding-top: 1.4rem; border-top: $line; }
  h3 { font-size: 1.2rem; margin-top: 2em; }
  h4 { font-size: 1.05rem; margin-top: 1.6em; }
  .anchor { margin-left: 0.4rem; $muted; $nodeco; opacity: 0; transition: opacity 0.2s; }
  h2:hover .anchor, h3:hover .anchor, .anchor:focus-visible { opacity: 1; }
  ul, ol { padding-left: 1.35rem; margin: 0 0 1.2em; }
  li { margin: 0.3em 0; }
  li::marker { $muted; }
  :not(pre) > code { padding: 0.12em 0.4em; border: $line; border-radius: 6px; background: var(--surface-2); font-size: 0.875em; overflow-wrap: anywhere; }
  blockquote { margin: 1.5rem 0; padding: 1rem 1.25rem; border: $line; border-left: 4px solid var(--accent); border-radius: 10px; background: var(--surface); p:last-child { margin: 0; } }
  hr { border: 0; border-top: $line; margin: 2.5rem 0; }
}
.table-wrap { overflow-x: auto; margin: 1.25rem 0 1.75rem; border: $line; border-radius: 12px; }
table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
th, td { padding: 0.7rem 0.9rem; text-align: left; vertical-align: top; border-bottom: $line; }
th { background: var(--surface); font-weight: 600; white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
td code { white-space: nowrap; }
.yes { color: var(--ok); font-weight: 600; } .no { color: var(--warn); font-weight: 600; }
.crumbs { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1.25rem; $muted; font-size: 0.9rem; a { $muted; $nodeco; &:hover { color: var(--text); } } }

/* docs layout */
.docs { display: grid; grid-template-columns: 14.5rem minmax(0, 1fr) 13rem; gap: 2.75rem; padding-top: 2.5rem; padding-bottom: 5rem; }
.docs-nav { position: sticky; top: 6.5rem; align-self: start; max-height: calc(100vh - 8rem); overflow-y: auto; summary { list-style: none; margin-bottom: 0.75rem; $label; $muted; &::-webkit-details-marker { display: none; } } }
.docs-nav ul, .toc ul { list-style: none; margin: 0; padding: 0; }
.docs-nav a { display: block; padding: 0.45rem 0.75rem; border-radius: 8px; $muted; $nodeco; font-size: 0.95rem; transition: $tc; &:hover { color: var(--text); background: var(--surface); } &[aria-current="page"] { color: var(--text); background: var(--surface-2); font-weight: 600; box-shadow: inset 3px 0 0 var(--accent); } }
.toc { position: sticky; top: 6.5rem; align-self: start; font-size: 0.9rem; p { $label; $muted; margin-bottom: 0.75rem; } a { display: block; padding: 0.3rem 0 0.3rem 0.75rem; border-left: $line; $muted; $nodeco; &:hover { color: var(--text); border-color: var(--accent); } } }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 3.5rem; a { display: block; padding: 1rem 1.25rem; border: $line; border-radius: 12px; $nodeco; font-weight: 600; color: var(--text); transition: border-color 0.2s; &:hover { border-color: var(--accent); } } small { display: block; $muted; font-weight: 400; } .next { text-align: right; grid-column: 2; } }
.article { padding-top: 2.5rem; padding-bottom: 5rem; .prose { margin: 0 auto; } }

/* forms */
.form { display: grid; gap: 1.1rem; max-width: 40rem; }
.field {
  label { display: block; margin-bottom: 0.4rem; font-weight: 600; }
  .hint { $muted; font-weight: 400; font-size: 0.9rem; }
  input, textarea, select { width: 100%; min-height: 46px; padding: 0.7rem 0.85rem; border: $line; border-radius: 10px; background: var(--bg); color: var(--text); font: 1rem/1.5 var(--font); transition: border-color 0.2s; }
  textarea { min-height: 9rem; resize: vertical; }
  input:focus, textarea:focus, select:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
}
.row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.rating {
  display: flex; flex-direction: row-reverse; justify-content: flex-end; gap: 0.25rem; border: 0; padding: 0; margin: 0;
  legend { float: left; width: 100%; margin-bottom: 0.4rem; font-weight: 600; }
  input { position: absolute; opacity: 0; width: 1px; height: 1px; }
  label { $center; width: 44px; height: 44px; border-radius: 10px; color: color-mix(in srgb, var(--muted) 70%, transparent); cursor: pointer; transition: color 0.15s; svg { width: 30px; height: 30px; } }
  input:checked ~ label, label:hover, label:hover ~ label { color: #fbbf24; }
  input:focus-visible + label { outline: 2px solid var(--accent); outline-offset: 2px; }
}
.alert { padding: 1rem 1.25rem; border: $line; border-left-width: 4px; border-radius: 10px; background: var(--surface); margin-bottom: 1.5rem; &.ok { border-left-color: var(--ok); } &.err { border-left-color: #f87171; } }
.panel { padding: 1.75rem; $box; }

/* reviews */
.stars { display: inline-flex; gap: 2px; color: #fbbf24; vertical-align: -3px; svg { width: 18px; height: 18px; } .off { color: color-mix(in srgb, var(--muted) 45%, transparent); } }
.review { padding: 1.5rem; $box; h3 { font-size: 1.05rem; margin: 0.6rem 0 0.4rem; } p { margin-bottom: 0.75rem; white-space: pre-line; } footer { $muted; font-size: 0.9rem; } }
.reviews-list { display: grid; gap: 1rem; }
.score { $flex; gap: 1rem; flex-wrap: wrap; .big { font: 700 3rem/1 var(--font); letter-spacing: -0.03em; } }

/* examples */
.demo { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 1.5rem; align-items: start; padding: 1.5rem; $box; margin-bottom: 1.75rem; h2 { font-size: 1.3rem; } .code { margin: 0; } }
.stage { min-height: 12rem; padding: 1.25rem; border: 1px dashed var(--border); border-radius: 12px; background: var(--bg); }

/* search */
.search-dialog {
  width: min(40rem, calc(100vw - 2rem)); margin: 10vh auto auto; padding: 0; $box; color: var(--text); box-shadow: var(--shadow);
  &::backdrop { background: rgb(2 6 12 / 0.6); backdrop-filter: blur(3px); }
  input { width: 100%; min-height: 56px; padding: 1rem 1.25rem; border: 0; border-bottom: $line; background: transparent; color: var(--text); font: 1.05rem var(--font); &:focus { outline: none; } }
  ul { list-style: none; margin: 0; padding: 0.5rem; max-height: 60vh; overflow-y: auto; }
  li a { display: block; padding: 0.7rem 0.9rem; border-radius: 10px; color: var(--text); $nodeco; small { display: block; $muted; } &[aria-selected="true"], &:hover { background: var(--surface-2); } }
  .empty { padding: 1rem 1.25rem; $muted; }
}

/* footer */
.site-footer { border-top: $line; background: var(--surface); padding: 3.5rem 0 1.5rem; }
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2rem; }
.foot-brand p { $muted; max-width: 22rem; margin-top: 0.75rem; }
.site-footer {
  h2 { $label; $muted; margin: 0.75rem 0 1rem; }
  ul { list-style: none; padding: 0; margin: 0; }
  li { margin: 0.45rem 0; }
  a { color: var(--text); $nodeco; &:hover { color: var(--accent); } }
}
.foot-legal { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; margin-top: 2.5rem; padding-top: 1.5rem; border-top: $line; $muted; font-size: 0.9rem; p { margin: 0; } a { $muted; } }

/* responsive */
@media (max-width: 1199px) {
  .docs { grid-template-columns: 14rem minmax(0, 1fr); }
  .toc { display: none; }
}
@media (max-width: 960px) {
  .hero .wrap, .split, .demo { grid-template-columns: minmax(0, 1fr); }
  .grid-3, .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .docs { grid-template-columns: minmax(0, 1fr); gap: 1.5rem; padding-top: 1.5rem; }
  .docs-nav { position: static; max-height: none; padding: 0.75rem 1rem; border: $line; border-radius: 12px; background: var(--surface); summary { margin: 0; padding: 0.5rem 0; cursor: pointer; } details[open] summary { margin-bottom: 0.5rem; } }
  .menu-btn { display: inline-grid; }
  .main-nav { display: none; position: absolute; left: 1rem; right: 1rem; top: calc(100% + 0.5rem); flex-direction: column; align-items: stretch; padding: 0.75rem; background: var(--surface); border: $line; border-radius: var(--radius); box-shadow: var(--shadow); &.open { display: flex; } a { padding: 0.8rem 1rem; } .btn { margin: 0.4rem 0 0; } }
  .tools { margin-left: auto; }
  .section { padding: 3.75rem 0; }
}
@media (max-width: 640px) {
  .grid-3, .grid-2, .steps, .row-2, .stats { grid-template-columns: minmax(0, 1fr); }
  .foot-grid { grid-template-columns: 1fr; }
  .brand span { display: none; }
  .hero { padding-top: 3.5rem; }
  .pager { grid-template-columns: 1fr; .next { grid-column: 1; } }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}