:root {
  --paper: #f7f4ef; --card: #ffffff; --ink: #1d1b19; --muted: #6a645d; --line: #e5dfd6;
  --accent: #b5322b; --accent-soft: #f5e4de; --code: #f0ebe3; --dark: #191817;
  --radius: 14px; --serif: "Noto Serif JP", Georgia, serif;
  --sans: Inter, "Segoe UI", system-ui, -apple-system, sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 16px/1.65 var(--sans); }
img, video { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
.wrap { max-width: 980px; margin: 0 auto; padding: 0 16px; }
h1, h2, h3 { font-family: var(--serif); font-weight: 700; line-height: 1.25; margin: 0 0 .5em; }
h1 { font-size: clamp(30px, 5vw, 46px); letter-spacing: -.01em; }
h2 { font-size: clamp(24px, 3.4vw, 32px); }
h3 { font-size: 19px; font-weight: 500; }
p { margin: 0 0 1em; }
.kicker { font: 600 12px/1 var(--sans); letter-spacing: .18em; text-transform: uppercase;
  color: var(--accent); margin: 0 0 14px; display: flex; align-items: center; gap: 10px; }
.kicker::before { content: ""; width: 22px; height: 2px; background: var(--accent); }
.lead { font-size: 18px; color: #3a3632; max-width: 46em; }
.muted { color: var(--muted); }
section { padding: 56px 0; border-top: 1px solid var(--line); }
section:first-of-type { border-top: 0; }
.hero { padding: 28px 0 40px; }
.hero img { border-radius: var(--radius); box-shadow: 0 18px 40px -24px rgba(40, 30, 20, .45); }
.hero h1 { margin-top: 30px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 0; padding: 0; list-style: none; }
.chips li { background: var(--card); border: 1px solid var(--line); border-radius: 999px;
  padding: 5px 13px; font-size: 13.5px; font-weight: 500; }
.chips li b { color: var(--accent); font-weight: 600; }
.grid { display: grid; gap: 16px; }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.card h3 { margin-bottom: .35em; }
.card p { margin: 0; color: #4a4540; font-size: 15px; }
.card .num { font: 700 13px/1 var(--sans); color: var(--accent); letter-spacing: .1em; margin-bottom: 12px; }
figure { margin: 0; }
figure.media { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
figure.media img, figure.media video { width: 100%; height: auto; }
figure.media figcaption { padding: 14px 18px 16px; font-size: 14.5px; color: #4a4540; }
figure.media figcaption b { color: var(--ink); font-weight: 600; display: block; font-size: 15.5px; margin-bottom: 2px; }
.gallery { display: grid; gap: 14px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.gallery figure:first-child { grid-column: 1 / -1; }
.steps { counter-reset: step; list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.steps li { counter-increment: step; background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 16px 18px 16px 62px; position: relative; }
.steps li::before { content: counter(step); position: absolute; left: 18px; top: 15px; width: 28px; height: 28px;
  border-radius: 50%; background: var(--accent); color: #fff; font: 600 14px/28px var(--sans); text-align: center; }
table { width: 100%; border-collapse: collapse; font-size: 14.5px; background: var(--card);
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-weight: 600; background: #fbf9f6; font-size: 13px; letter-spacing: .02em; color: #4a4540; }
tr:last-child td { border-bottom: 0; }
td.name { font-weight: 600; white-space: nowrap; }
td.type, td.val { white-space: nowrap; color: #4a4540; font-variant-numeric: tabular-nums; }
.scroll { overflow-x: auto; border-radius: var(--radius); }
code, kbd { font: 13.5px/1.4 ui-monospace, "Cascadia Code", Consolas, monospace; background: var(--code);
  border-radius: 6px; padding: 2px 6px; }
kbd { border: 1px solid var(--line); border-bottom-width: 2px; }
.note { background: var(--accent-soft); border-left: 3px solid var(--accent); border-radius: 0 10px 10px 0;
  padding: 14px 18px; margin: 18px 0; font-size: 15px; }
.cta { display: inline-flex; align-items: center; gap: 8px; background: var(--ink); color: #fff;
  text-decoration: none; padding: 12px 20px; border-radius: 999px; font-weight: 600; font-size: 15px; }
.cta:hover { background: var(--accent); }
.specs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.spec { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.spec b { display: block; font: 700 26px/1.1 var(--serif); }
.spec span { font-size: 13px; color: var(--muted); }
footer { padding: 36px 0 48px; border-top: 1px solid var(--line); font-size: 14px; color: var(--muted); }
/* documentation layout */
.doc { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 40px; align-items: start; }
.toc { position: sticky; top: 20px; font-size: 14.5px; }
.toc ol { list-style: none; margin: 0; padding: 0; border-left: 2px solid var(--line); }
.toc a { display: block; padding: 5px 0 5px 14px; color: #4a4540; text-decoration: none; margin-left: -2px;
  border-left: 2px solid transparent; }
.toc a:hover { color: var(--accent); border-left-color: var(--accent); }
.doc section { padding: 40px 0; }
.doc h2 { scroll-margin-top: 16px; }
.doc h3 { margin-top: 1.4em; scroll-margin-top: 16px; }
.doc ul { padding-left: 1.2em; } .doc li { margin: .3em 0; }
.panel-head { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin: 28px 0 10px; }
.panel-head h3 { margin: 0; }
.panel-head span { color: var(--muted); font-size: 14.5px; }
@media (max-width: 760px) {
  .grid.two, .grid.three, .gallery { grid-template-columns: 1fr; }
  .specs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .doc { grid-template-columns: 1fr; gap: 0; }
  .toc { position: static; margin: 8px 0 8px; }
  .toc ol { columns: 2; }
  section { padding: 40px 0; }
  .hero h1 { margin-top: 22px; }
}