:root {
  color-scheme: light dark;
  --bg: #f7f8fa;
  --bg-alt: #ffffff;
  --text: #1b1e24;
  --muted: #5b6270;
  --border: #dfe3ea;
  --accent: #1f6fd1;
  --accent-text: #ffffff;
  --code-bg: #eceff4;
  --shadow: 0 10px 30px rgba(20, 30, 50, 0.15);
  --radius: 10px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "DejaVu Sans Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { --bg: #14161a; --bg-alt: #1b1e24; --text: #e8eaee; --muted: #a0a7b4; --border: #2c313a; --accent: #4594ed; --accent-text: #0b1220; --code-bg: #242830; --shadow: 0 10px 30px rgba(0, 0, 0, 0.5); }
}
:root[data-theme="dark"] { --bg: #14161a; --bg-alt: #1b1e24; --text: #e8eaee; --muted: #a0a7b4; --border: #2c313a; --accent: #4594ed; --accent-text: #0b1220; --code-bg: #242830; --shadow: 0 10px 30px rgba(0, 0, 0, 0.5); }
:root[data-theme="light"] { color-scheme: light; }
:root[data-theme="dark"] { color-scheme: dark; }

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
}

body {
  margin: 0;
  font-family: var(--font);
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

a { color: var(--accent); }
a:focus-visible, .btn:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: var(--accent-text);
  padding: .5rem 1rem;
  z-index: 10;
}
.skip:focus { left: 0; }

.wrap { width: min(1120px, 100% - 2rem); margin-inline: auto; }

header.site {
  position: sticky;
  top: 0;
  z-index: 5;
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
header.site .wrap { display: flex; align-items: center; gap: 1rem; padding-block: .6rem; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: .6rem; font-weight: 700; color: var(--text); text-decoration: none; }
.brand img { width: 32px; height: 32px; }
nav { margin-left: auto; display: flex; gap: 1.1rem; flex-wrap: wrap; }
nav a { color: var(--muted); text-decoration: none; font-size: .95rem; }
nav a:hover { color: var(--text); }

.hero { padding: 4rem 0 2rem; text-align: center; }
.hero h1 { font-size: clamp(2rem, 5vw, 3.4rem); line-height: 1.15; margin: 0 0 1rem; }
.hero p.lead { font-size: clamp(1.05rem, 2.2vw, 1.3rem); color: var(--muted); max-width: 46rem; margin: 0 auto 1.6rem; }
.badge {
  display: inline-block;
  font-size: .8rem;
  font-weight: 600;
  padding: .15rem .6rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  background: var(--bg-alt);
  margin-bottom: 1rem;
}
.cta { display: flex; gap: .8rem; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-block;
  padding: .7rem 1.3rem;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--accent-text);
}
.btn.secondary { background: transparent; color: var(--accent); }
.btn:hover { filter: brightness(1.08); }

.shot {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  background: var(--bg-alt);
}
.shot img { display: block; width: 100%; height: auto; }
.shot figcaption { padding: .7rem 1rem; font-size: .9rem; color: var(--muted); border-top: 1px solid var(--border); }
.hero .shot { margin-top: 3rem; text-align: left; }

section { padding: 3.5rem 0; }
section.alt { background: var(--bg-alt); border-block: 1px solid var(--border); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin: 0 0 .5rem; }
.sub { color: var(--muted); margin: 0 0 2rem; max-width: 46rem; }

.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.card { border: 1px solid var(--border); border-radius: var(--radius); padding: 1.1rem 1.2rem; background: var(--bg-alt); }
section.alt .card { background: var(--bg); }
.card h3 { margin: 0 0 .3rem; font-size: 1.05rem; }
.card p { margin: 0; color: var(--muted); font-size: .95rem; }

.showcase { display: grid; gap: 3rem; }
.feature { display: grid; gap: 1.5rem; align-items: center; grid-template-columns: 1fr 1.6fr; }
.feature:nth-child(even) { grid-template-columns: 1.6fr 1fr; }
.feature:nth-child(even) .text { order: 2; }
.feature h3 { margin: 0 0 .5rem; font-size: 1.3rem; }
.feature p { color: var(--muted); margin: 0 0 .6rem; }
@media (max-width: 820px) {
  .feature, .feature:nth-child(even) { grid-template-columns: 1fr; }
  .feature:nth-child(even) .text { order: 0; }
}

.platforms { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
pre, code { font-family: var(--mono); font-size: .88rem; }
code { background: var(--code-bg); padding: .1rem .35rem; border-radius: 4px; }
pre { background: var(--code-bg); padding: .8rem 1rem; border-radius: 8px; overflow-x: auto; margin: .6rem 0; }
pre code { background: none; padding: 0; }
.card ol, .card ul { margin: .4rem 0 0; padding-left: 1.2rem; color: var(--muted); font-size: .95rem; }

.note { border-left: 4px solid var(--accent); padding: .6rem 1rem; background: var(--bg-alt); border-radius: 0 8px 8px 0; margin-top: 1.5rem; color: var(--muted); }

footer { border-top: 1px solid var(--border); padding: 2rem 0; color: var(--muted); font-size: .9rem; }
footer .wrap { display: flex; gap: 1rem 2rem; flex-wrap: wrap; justify-content: space-between; }
footer a { color: var(--muted); }

.theme-toggle { display: inline-flex; border: 1px solid var(--border); border-radius: 999px; overflow: hidden; }
.theme-toggle button { font: inherit; font-size: .85rem; padding: .25rem .7rem; border: 0; background: transparent; color: var(--muted); cursor: pointer; }
.theme-toggle button[aria-pressed="true"] { background: var(--accent); color: var(--accent-text); }
.theme-toggle button:focus-visible { outline: 3px solid var(--accent); outline-offset: -3px; }
.video-wrap { max-width: 1000px; margin-inline: auto; }
.video-wrap video { width: 100%; height: auto; border-radius: var(--radius); box-shadow: var(--shadow); background: #000; }
.pair { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem; margin-top: 1.5rem; }
.pair figure { margin: 0; }
.pair figcaption { font-size: .9rem; color: var(--muted); margin-top: .4rem; }
.pair img { width: 100%; height: auto; border-radius: var(--radius); box-shadow: var(--shadow); }
@media (max-width: 700px) { .pair { grid-template-columns: 1fr; } }

.zoomable { cursor: zoom-in; }
.lightbox { border: 0; padding: 0; background: transparent; max-width: 96vw; max-height: 96vh; }
.lightbox::backdrop { background: rgba(0, 0, 0, .85); }
.lightbox img { display: block; max-width: 96vw; max-height: 96vh; width: auto; height: auto; border-radius: 8px; cursor: zoom-out; }
.lightbox-close { position: fixed; top: 12px; right: 16px; font-size: 2rem; line-height: 1; color: #fff; background: rgba(0, 0, 0, .5); border: 0; border-radius: 50%; width: 2.5rem; height: 2.5rem; cursor: pointer; }

.pair.trio { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 700px) { .pair.trio { grid-template-columns: 1fr; } }