:root {
  --bg: #0f1115;
  --panel: #141821;
  --text: #e6e6e6;
  --muted: #b7bdc6;
  --accent: #6ea8fe;
  --code-bg: #0b0d12;
  --border: #222839;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); font-family: system-ui, -apple-system, Segoe UI, Roboto, "Noto Sans JP", Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji"; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { max-width: 960px; margin: 0 auto; padding: 32px 20px 80px; }
h1 { font-size: 2.2rem; margin: 0 0 1rem; }
h2 { font-size: 1.6rem; margin: 2.2rem 0 0.8rem; padding-top: 0.2rem; border-top: 1px solid transparent; }
h3 { font-size: 1.25rem; margin: 1.8rem 0 0.6rem; }
p { line-height: 1.9; color: var(--muted); margin: 0.7rem 0; }
ul { padding-left: 1.3rem; }
li { margin: 0.35rem 0; line-height: 1.8; color: var(--muted); }
hr { border: 0; height: 1px; background: var(--border); margin: 2rem 0; }
code { background: var(--code-bg); color: #e9f0ff; padding: 0.1rem 0.35rem; border-radius: 4px; font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; font-size: 0.95em; }
pre { background: var(--code-bg); border: 1px solid var(--border); border-radius: 8px; padding: 16px; overflow: auto; }
pre code { background: transparent; padding: 0; color: #e9f0ff; display: block; }
.lead { font-size: 1.05rem; color: var(--muted); }
.badge { display: inline-block; padding: 0.2rem 0.5rem; border: 1px solid var(--border); border-radius: 999px; font-size: 0.85rem; color: var(--muted); }
.panel { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 16px 18px; margin: 1rem 0; }

/* Illustrations and images */
img { max-width: 100%; height: auto; }
.illustration { margin: 1rem 0 1.5rem; }
.illustration img { border: 1px solid var(--border); border-radius: 8px; background: #0003; }

/* Hero */
.hero { display: flex; align-items: center; gap: 24px; padding: 8px 0 12px; }
.hero-logo { width: 72px; height: auto; border-radius: 12px; border: 1px solid var(--border); background: #0003; }
.hero-copy { flex: 1; min-width: 240px; }
.hero-cta { display: inline-block; background: var(--accent); color: #0b0d12; font-weight: 600; padding: 10px 14px; border-radius: 8px; text-decoration: none; }
.hero-cta:hover { filter: brightness(1.06); text-decoration: none; }

/* Screenshot gallery: horizontal scroll with fixed height */
.gallery { display: flex; gap: 12px; margin: 0.5rem 0 2rem; overflow-x: auto; overflow-y: hidden; padding-bottom: 6px; scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch; }
.gallery figure { margin: 0; flex: 0 0 auto; scroll-snap-align: start; }
.gallery img { border: 1px solid var(--border); border-radius: 8px; background: #0003; height: 360px; width: auto; }

@media (max-width: 640px) {
  .gallery img { height: 260px; }
}