:root {
  --bg: #1E1F22;
  --sidebar: #18191B;
  --panel: #25262A;
  --input: #2C2E33;
  --canvas: #1A1B1E;
  --grid: #2A2C31;
  --border: #3A3C42;
  --border-strong: #4C4F57;
  --hover: #30333A;
  --selected: #233A5C;
  --text: #E3E5E8;
  --muted: #9DA2AB;
  --accent: #4C9DFF;
  --on-accent: #0B1626;
  --success: #56C08D;
  --warning: #E2B04A;
  --danger: #F07A7A;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Consolas, monospace;
  --radius: 6px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 16px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { line-height: 1.15; margin: 0 0 .5em; letter-spacing: -0.01em; }
h1 { font-size: clamp(2rem, 4.2vw, 3.25rem); font-weight: 700; }
h2 { font-size: clamp(1.5rem, 2.6vw, 2.1rem); font-weight: 600; }
.muted { color: var(--muted); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.wrap { width: min(1180px, 100% - 32px); margin-inline: auto; }

.eyebrow {
  font: 500 .78rem/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--accent);
  margin: 0 0 1rem;
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .8rem 1.25rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--input);
  color: var(--text);
  font: 600 1rem/1 var(--sans);
  cursor: pointer;
  transition: background .15s, border-color .15s, transform .15s;
}
.btn:hover { text-decoration: none; background: var(--hover); border-color: var(--border-strong); }
.btn--primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.btn--primary:hover { background: #69aeff; border-color: #69aeff; }
.btn--ghost { background: transparent; }
.btn--small { padding: .5rem .9rem; font-size: .9rem; }
.btn[disabled] { opacity: .6; cursor: progress; }

/* Top bar */
.topbar {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--sidebar) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.topbar__inner { display: flex; align-items: center; gap: 1.5rem; height: 60px; }
.brand { display: flex; align-items: center; gap: .6rem; color: var(--text); font: 600 .95rem/1 var(--mono); letter-spacing: .08em; }
.brand:hover { text-decoration: none; }
.brand img { width: 64px; }
.nav { display: flex; gap: 1.5rem; margin-left: auto; }
.nav a { color: var(--muted); font-size: .95rem; }
.nav a:hover { color: var(--text); text-decoration: none; }

/* Hero */
.hero {
  padding: clamp(3rem, 7vw, 6rem) 0 3rem;
  background:
    linear-gradient(var(--grid) 1px, transparent 1px) 0 0 / 32px 32px,
    linear-gradient(90deg, var(--grid) 1px, transparent 1px) 0 0 / 32px 32px,
    var(--canvas);
  border-bottom: 1px solid var(--border);
  position: relative;
}
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(ellipse at 70% 40%, transparent 0%, var(--canvas) 75%);
  opacity: .85;
}
.hero > * { position: relative; z-index: 1; }
.hero__grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: clamp(2rem, 4vw, 4rem); align-items: center; }
.lead { font-size: 1.1rem; color: var(--muted); max-width: 34rem; }
.cta { display: flex; flex-wrap: wrap; gap: .75rem; margin: 2rem 0 1rem; }
.release-meta { font: 400 .85rem/1.5 var(--mono); color: var(--muted); margin: .75rem 0 0; }
.release-meta b { color: var(--success); font-weight: 500; }

.window {
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--panel);
  box-shadow: 0 30px 80px -20px rgba(0,0,0,.7), 0 0 0 1px rgba(76,157,255,.06);
}
.window__bar {
  display: flex; align-items: center; gap: 6px;
  height: 32px; padding: 0 12px;
  background: var(--sidebar);
  border-bottom: 1px solid var(--border);
  font: 400 .75rem/1 var(--mono); color: var(--muted);
}
.window__bar i { width: 10px; height: 10px; border-radius: 50%; background: var(--border-strong); }
.window__bar span { margin-left: 8px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.hero__shot { margin: 0; }
.slides { position: relative; aspect-ratio: 1200 / 717; background: var(--canvas); overflow: hidden; }
.slide {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  opacity: 0; transform: scale(1.02);
  transition: opacity .7s ease, transform 3.5s ease-out;
}
.slide.is-shown { opacity: 1; transform: scale(1); }
.slides__progress { height: 2px; background: var(--border); }
.slides__progress span { display: block; height: 100%; width: 0; background: var(--accent); }
.slides__progress span.is-running { width: 100%; transition: width linear var(--slide-ms, 3500ms); }
#hero-title { transition: opacity .3s; }

.facts {
  list-style: none; padding: 0; margin: 3.5rem 0 0;
  display: grid; grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--panel);
}
.facts li { padding: 1.1rem 1.25rem; display: flex; align-items: baseline; gap: .6rem; }
.facts li + li { border-left: 1px solid var(--border); }
.facts b { font: 500 1.6rem/1 var(--mono); color: var(--accent); }
.facts span { color: var(--muted); font-size: .92rem; }

/* Sections */
.section { padding: clamp(3.5rem, 8vw, 6rem) 0; }
.section--alt { background: var(--sidebar); border-block: 1px solid var(--border); }
.section__head { max-width: 44rem; margin-bottom: 2rem; }

/* Tool explorer */
.tabs { display: flex; gap: .25rem; border-bottom: 1px solid var(--border); margin-bottom: 1.5rem; overflow-x: auto; scrollbar-width: none; }
.tabs::-webkit-scrollbar { display: none; }
.tabs button {
  flex: none;
  background: none; border: 0; border-bottom: 2px solid transparent;
  color: var(--muted); font: 500 .95rem/1 var(--sans);
  padding: .85rem 1rem; cursor: pointer; margin-bottom: -1px;
}
.tabs button small { font-family: var(--mono); color: var(--border-strong); margin-left: .25rem; }
.tabs button:hover { color: var(--text); }
.tabs button[aria-selected="true"] { color: var(--text); border-bottom-color: var(--accent); }
.tabs button[aria-selected="true"] small { color: var(--accent); }
.no-js .tabs { display: none; }

.explorer { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr); gap: 2rem; align-items: start; }
.toolgroup h3 { font: 500 .78rem/1 var(--mono); text-transform: uppercase; letter-spacing: .12em; color: var(--muted); margin: 0 0 .75rem; }
.js .toolgroup:not(.is-active) { display: none; }
.js .toolgroup h3 { display: none; }
.no-js .toolgroup + .toolgroup { margin-top: 2rem; }
.tool {
  display: grid; grid-template-columns: 1fr auto; gap: .2rem 1rem;
  width: 100%; text-align: left;
  padding: .85rem 1rem;
  background: transparent; color: var(--text);
  border: 1px solid transparent; border-radius: var(--radius);
  font: inherit; cursor: pointer;
}
.tool + .tool { margin-top: .25rem; }
.tool b { font-weight: 600; }
.tool span { grid-column: 1 / -1; color: var(--muted); font-size: .92rem; }
.tool:hover { background: var(--hover); }
.tool.is-active { background: var(--selected); border-color: color-mix(in srgb, var(--accent) 40%, transparent); }
.tool.is-active span { color: var(--text); }
.sw {
  grid-row: 1; grid-column: 2;
  font: 500 .7rem/1 var(--mono); font-style: normal;
  padding: .35rem .5rem; border-radius: 4px; white-space: nowrap; align-self: center;
}
.sw--yes { color: var(--warning); background: color-mix(in srgb, var(--warning) 12%, transparent); }
.sw--no { color: var(--success); background: color-mix(in srgb, var(--success) 12%, transparent); }
.sw--part { color: var(--muted); background: var(--input); }
.preview { margin: 0; position: sticky; top: 84px; }
.preview img { transition: opacity .2s; }
.preview img.is-loading { opacity: .4; }
.no-js .preview { display: none; }
.no-js .explorer { grid-template-columns: 1fr; }

/* Install */
.install { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 5rem); align-items: start; }
.steps { padding: 0; margin: 1.5rem 0 2rem; list-style: none; counter-reset: s; }
.steps li { counter-increment: s; position: relative; padding: 0 0 1.25rem 3rem; color: var(--muted); }
.steps li::before {
  content: counter(s); position: absolute; left: 0; top: -.1rem;
  width: 2rem; height: 2rem; display: grid; place-items: center;
  border: 1px solid var(--border-strong); border-radius: 50%;
  font: 500 .85rem/1 var(--mono); color: var(--accent);
}
.steps b { color: var(--text); display: block; }
kbd { font: 500 .8rem/1 var(--mono); padding: .15rem .4rem; border: 1px solid var(--border-strong); border-bottom-width: 2px; border-radius: 4px; background: var(--input); color: var(--text); }
.specs { margin: 0; border: 1px solid var(--border); border-radius: var(--radius); background: var(--panel); }
.specs div { display: grid; grid-template-columns: 9rem 1fr; gap: 1rem; padding: 1rem 1.25rem; }
.specs div + div { border-top: 1px solid var(--border); }
.specs dt { font: 500 .78rem/1.6 var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.specs dd { margin: 0; }
.specs code { font: 400 .75rem/1.5 var(--mono); word-break: break-all; color: var(--muted); }

/* Contact */
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 5rem); align-items: start; }
.links { list-style: none; padding: 0; margin: 2rem 0 0; }
.links li { display: grid; grid-template-columns: 7rem 1fr; padding: .7rem 0; border-top: 1px solid var(--border); overflow-wrap: anywhere; }
.links span { font: 500 .78rem/1.9 var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.form { display: grid; gap: 1rem; padding: 1.5rem; border: 1px solid var(--border); border-radius: 8px; background: var(--panel); }
.form label { display: grid; gap: .4rem; font-size: .9rem; color: var(--muted); }
.form input, .form textarea {
  width: 100%; padding: .75rem .85rem;
  background: var(--input); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--radius);
  font: 400 1rem/1.4 var(--sans);
}
.form textarea { resize: vertical; min-height: 8rem; }
.form input:focus, .form textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 25%, transparent); }
.form .btn { justify-self: start; }
.form__status { margin: 0; min-height: 1.5em; font-size: .92rem; }
.form__status.is-ok { color: var(--success); }
.form__status.is-err { color: var(--danger); }

/* Footer */
.footer { border-top: 1px solid var(--border); padding: 2rem 0; font-size: .85rem; }
.footer__inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; }

/* Responsive */
@media (max-width: 900px) {
  .hero__grid, .explorer, .install, .contact { grid-template-columns: minmax(0, 1fr); }
  h1, h2 { overflow-wrap: anywhere; hyphens: auto; }
  .preview { position: static; order: -1; }
  .facts { grid-template-columns: repeat(2, 1fr); }
  .facts li:nth-child(3) { border-left: 0; }
  .facts li:nth-child(n+3) { border-top: 1px solid var(--border); }
}
@media (max-width: 600px) {
  .nav { display: none; }
  .topbar .btn--small { margin-left: auto; }
  .cta .btn { flex: 1 1 100%; justify-content: center; }
  .specs div { grid-template-columns: 1fr; gap: .25rem; }
  .links li { grid-template-columns: 1fr; }
  .facts li { flex-direction: column; gap: .3rem; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}