:root {
  --bg: #ffffff;
  --bg-2: #f5f7fa;
  --panel: #ffffff;
  --text: #1c2430;
  --text-2: #5b6675;
  --border: #e1e6ed;
  --accent: #1f6feb;
  --accent-2: #1a5fd0;
  --accent-bg: #e8f0fe;
  --code-bg: #f0f3f7;
  --shadow: 0 18px 50px rgba(20, 35, 60, 0.16), 0 2px 6px rgba(20, 35, 60, 0.08);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #11151b;
    --bg-2: #171c24;
    --panel: #1b212b;
    --text: #e6ebf2;
    --text-2: #9aa6b6;
    --border: #2a323e;
    --accent: #4c8dff;
    --accent-2: #6aa1ff;
    --accent-bg: #1c2a44;
    --code-bg: #222a35;
    --shadow: 0 18px 50px rgba(0, 0, 0, 0.5), 0 2px 6px rgba(0, 0, 0, 0.4);
    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: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", Ubuntu, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code, kbd, pre { font-family: ui-monospace, "SF Mono", Menlo, Consolas, "DejaVu Sans Mono", monospace; font-size: 0.9em; }
code { background: var(--code-bg); padding: 0.1em 0.35em; border-radius: 4px; }
kbd {
  background: var(--panel); border: 1px solid var(--border); border-bottom-width: 2px;
  border-radius: 4px; padding: 0 0.35em; font-size: 0.82em; white-space: nowrap;
}
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 16px; }

/* Header */
.top {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--border);
}
.bar { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 12px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--text); font-size: 17px; white-space: nowrap; }
.brand:hover { text-decoration: none; }
.brand img { border-radius: 6px; }
nav { display: flex; align-items: center; gap: 22px; }
nav a { color: var(--text-2); font-size: 15px; }
nav a:hover, nav a[aria-current] { color: var(--text); text-decoration: none; }

/* Buttons */
.btn {
  display: inline-block; background: var(--accent); color: #fff !important; border: 0;
  border-radius: 8px; padding: 10px 18px; font-weight: 600; font-size: 15px; cursor: pointer;
  text-decoration: none !important; transition: background 0.15s;
}
.btn:hover { background: var(--accent-2); }
.btn.big { padding: 14px 28px; font-size: 17px; border-radius: 10px; }
.btn.small { padding: 6px 14px; font-size: 14px; }

/* Hero */
.hero { padding: 72px 0 24px; text-align: center; background: linear-gradient(180deg, var(--bg-2), var(--bg) 70%); }
.hero h1 { font-size: clamp(32px, 5vw, 52px); line-height: 1.12; letter-spacing: -0.02em; margin: 0 auto 18px; max-width: 820px; }
.lead { font-size: clamp(17px, 2vw, 20px); color: var(--text-2); max-width: 760px; margin: 0 auto 30px; }
.lead b { color: var(--text); font-weight: 600; }
.cta { display: flex; flex-direction: column; align-items: center; gap: 10px; margin-bottom: 48px; }
.meta { color: var(--text-2); font-size: 14px; }

.shot { margin: 0; }
.shot img {
  display: block; width: 100%; height: auto; border-radius: 10px;
  border: 1px solid var(--border); box-shadow: var(--shadow); background: #fff;
}
.hero-shot { max-width: 1040px; margin: 0 auto; }

/* Sections */
section h2 { font-size: clamp(26px, 3.4vw, 34px); letter-spacing: -0.015em; line-height: 1.2; margin: 0 0 28px; text-align: center; }
.features { padding: 88px 16px 40px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid > div { background: var(--bg-2); border: 1px solid var(--border); border-radius: 12px; padding: 22px 22px 18px; }
.grid h3 { margin: 0 0 6px; font-size: 17px; }
.grid p { margin: 0; color: var(--text-2); font-size: 15px; }

.gallery { display: grid; grid-template-columns: 1fr 1fr; gap: 40px 32px; padding: 48px 16px 40px; }
.gallery figcaption { margin-top: 14px; color: var(--text-2); font-size: 15px; text-align: center; }
.gallery figcaption b { color: var(--text); }

.news { padding: 64px 16px 56px; max-width: 820px; }
.notes { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.notes li { background: var(--bg-2); border: 1px solid var(--border); border-radius: 10px; padding: 14px 18px; color: var(--text-2); }
.notes li strong { display: block; color: var(--text); margin-bottom: 2px; }
.more { text-align: center; color: var(--text-2); margin-top: 24px; }

/* Download */
.download { background: var(--bg-2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 72px 0; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: start; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 24px; min-width: 0; }
.card.yours { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-bg); }
.card h3 { margin: 0 0 6px; font-size: 20px; }
.card > p { color: var(--text-2); margin: 0 0 16px; font-size: 15px; }
.card .alt { margin: 10px 0 0; font-size: 14px; }
.card .fine { font-size: 13px; margin: 14px 0 0; }
.tabs { display: flex; gap: 4px; margin: 4px 0 10px; }
.tabs button {
  background: none; border: 1px solid transparent; border-radius: 6px; padding: 4px 10px;
  color: var(--text-2); font: inherit; font-size: 14px; cursor: pointer;
}
.tabs button[aria-selected="true"] { background: var(--accent-bg); color: var(--accent); }
.tabpane { position: relative; }
.tabpane pre { padding-top: 34px; }
pre {
  background: var(--code-bg); border-radius: 8px; padding: 12px 14px; margin: 0;
  overflow-x: auto; font-size: 12.5px; line-height: 1.55;
}
pre code { background: none; padding: 0; font-size: inherit; }
.copy {
  position: absolute; top: 6px; right: 6px; background: var(--panel); color: var(--text-2);
  border: 1px solid var(--border); border-radius: 6px; font: inherit; font-size: 12px; padding: 2px 8px; cursor: pointer;
}
.copy:hover { color: var(--text); }

.foot { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; padding: 28px 16px 40px; color: var(--text-2); font-size: 14px; }

/* Manual */
.manual { display: grid; grid-template-columns: 250px 1fr; gap: 48px; padding-top: 32px; padding-bottom: 48px; }
.toc { position: sticky; top: 84px; align-self: start; max-height: calc(100vh - 100px); overflow: auto; }
.toc input {
  width: 100%; padding: 7px 10px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--panel); color: var(--text); font: inherit; font-size: 14px; margin-bottom: 10px;
}
.toc ol { list-style: none; margin: 0; padding: 0; }
.toc li a { display: block; padding: 4px 10px; border-radius: 6px; color: var(--text-2); font-size: 14px; line-height: 1.4; }
.toc li a:hover { background: var(--bg-2); text-decoration: none; color: var(--text); }
.toc li.cur a { background: var(--accent-bg); color: var(--accent); }
.prose { min-width: 0; max-width: 760px; }
.prose h1 { font-size: 36px; letter-spacing: -0.02em; line-height: 1.2; margin: 0 0 16px; }
.prose h2 { text-align: left; font-size: 26px; margin: 48px 0 12px; padding-top: 8px; border-top: 1px solid var(--border); padding-top: 32px; }
.prose h3 { font-size: 19px; margin: 28px 0 8px; }
.prose hr { display: none; }
.prose table { border-collapse: collapse; width: 100%; font-size: 15px; display: block; overflow-x: auto; }
.prose th, .prose td { border-bottom: 1px solid var(--border); padding: 7px 10px; text-align: left; vertical-align: top; }
.prose th { color: var(--text-2); font-weight: 600; }
.prose pre { margin: 12px 0; }
.prose li { margin: 3px 0; }
.prose img { display: block; max-width: 100%; height: auto; margin: 16px 0 20px; border: 1px solid var(--border); border-radius: 8px; box-shadow: var(--shadow); }
.prose blockquote { margin: 16px 0; padding: 4px 16px; border-left: 3px solid var(--accent); color: var(--text-2); background: var(--bg-2); border-radius: 0 8px 8px 0; }

/* Roadmap */
.roadmap { max-width: 820px; padding-top: 56px; padding-bottom: 56px; }
.roadmap h1 { font-size: clamp(32px, 5vw, 44px); letter-spacing: -0.02em; line-height: 1.15; margin: 0 0 12px; }
.roadmap .lead { margin: 0 0 40px; }
.release { position: relative; padding: 0 0 36px 28px; border-left: 2px solid var(--border); }
.release:last-of-type { border-left-color: transparent; }
.release::before {
  content: ""; position: absolute; left: -8px; top: 8px; width: 14px; height: 14px;
  border-radius: 50%; background: var(--bg); border: 2px solid var(--border);
}
.release:has(.now)::before { background: var(--accent); border-color: var(--accent); }
.release header { display: flex; align-items: baseline; flex-wrap: wrap; gap: 4px 12px; }
.release h2 { margin: 0; font-size: 26px; text-align: left; }
.release .when { color: var(--text-2); font-size: 15px; }
.release .tag { font-size: 12px; font-weight: 600; padding: 2px 9px; border-radius: 999px; background: var(--bg-2); border: 1px solid var(--border); color: var(--text-2); }
.release .tag.now { background: var(--accent-bg); border-color: transparent; color: var(--accent); }
.release .theme { color: var(--text-2); margin: 4px 0 14px; }
.release ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.release li { background: var(--bg-2); border: 1px solid var(--border); border-radius: 10px; padding: 12px 16px; color: var(--text-2); font-size: 15px; }
.release li strong { display: block; color: var(--text); font-size: 16px; margin-bottom: 2px; }
.release li.doing { border-color: var(--accent); }
.release li.doing strong::after { content: "Working on it"; margin-left: 8px; font-size: 12px; font-weight: 600; color: var(--accent); }

@media (max-width: 900px) {
  .grid, .cards { grid-template-columns: 1fr 1fr; }
  .gallery { grid-template-columns: 1fr; }
  .manual { grid-template-columns: 1fr; gap: 16px; }
  .toc { position: static; max-height: none; }
}
@media (max-width: 620px) {
  nav a:not(.btn) { display: none; }
  .grid, .cards { grid-template-columns: 1fr; }
  .hero { padding-top: 44px; }
  .release { padding-left: 20px; }
}