:root {
  color-scheme: dark light;
  --bg: #080628;
  --surface: #110f45;
  --text: #f3f2ff;
  --muted: #a5a4cf;
  --accent: #f4f57c;      /* ロゴの黄色 */
  --ring: #2c2a78;
  --border: #2b2970;
  --link: #f4f57c;
  --display: "RocknRoll One", "Zen Kaku Gothic New", system-ui, sans-serif;
  --font: "Zen Kaku Gothic New", system-ui, -apple-system, "Hiragino Sans", "BIZ UDPGothic", "Yu Gothic UI", Meiryo, "Noto Sans JP", sans-serif;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f8f8fd; --surface: #fff; --text: #14123a; --muted: #5d5c85;
    --accent: #f0e84a; --ring: #cfcdf0; --border: #dddcf0; --link: #2b2bb0;
  }
}
*, *::before, *::after { box-sizing: border-box; }
body {
  margin: 0; min-height: 100dvh; display: flex; flex-direction: column;
  background: var(--bg); color: var(--text); font: 1rem/1.85 var(--font);
  overflow-x: clip;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}
a { color: var(--link); text-underline-offset: .25em; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: .25rem; }
.skip-link { position: absolute; left: 1rem; top: -4rem; background: var(--surface); color: var(--text); padding: .5rem 1rem; border-radius: .5rem; z-index: 10; }
.skip-link:focus { top: 1rem; }
.wrapper { width: min(100% - 2.5rem, 62rem); margin-inline: auto; }
h1, h2 { line-height: 1.25; margin: 0; text-wrap: balance; }

/* header */
.site-header { padding-block: 1.25rem; position: relative; z-index: 1; }
.site-header .wrapper { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { display: flex; align-items: center; gap: .75rem; color: var(--text); text-decoration: none; font-weight: 700; }
.brand img { width: 2.5rem; height: 2.5rem; background: #fff; border-radius: 50%; padding: .2rem; }
.site-header nav a { color: var(--text); text-decoration: none; padding: .4rem .9rem; border-radius: 999px; border: 1px solid var(--border); }
.site-header nav a:hover, .site-header nav a[aria-current] { border-color: var(--accent); }

/* hero */
main { flex: 1; position: relative; }
.hero { position: relative; padding-block: clamp(2rem, 8vw, 6rem); display: grid; gap: clamp(2rem, 6vw, 4rem); align-items: center; }
@media (min-width: 52rem) { .hero { grid-template-columns: 1fr 1fr; } }

.orbit { position: relative; width: min(100%, 26rem); aspect-ratio: 1; margin-inline: auto; }
.orbit svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
@keyframes drift { to { transform: rotate(360deg); } }
@keyframes breathe { 50% { transform: scale(1.08); } }

.hero h1 { font-size: clamp(2.25rem, 6vw, 3.75rem); font-weight: 800; letter-spacing: .02em; }
.lead { margin: 1.25rem 0 1.75rem; color: var(--muted); max-width: 32rem; }
.button { display: inline-block; padding: .7rem 1.6rem; background: var(--accent); color: #080628; font-weight: 700; text-decoration: none; border-radius: 999px; transition: transform .2s; }
.button:hover { transform: translateY(-2px) rotate(-1deg); }

/* sections */
.section { padding-block: clamp(2rem, 5vw, 3.5rem); border-top: 1px solid var(--border); }
.section h2 { font-size: 1.35rem; margin-bottom: 1rem; }
.split { display: grid; gap: 1rem 3rem; }
@media (min-width: 52rem) { .split { grid-template-columns: 10rem 1fr; } }
.split h2 { margin: 0; }
.work { margin: 0; padding: 0; list-style: none; display: grid; gap: .9rem; }
.work li { padding-left: 1.6rem; position: relative; }
.work li::before { content: ""; position: absolute; left: 0; top: .6em; width: .8rem; height: .8rem; border-radius: 50%; border: 3px solid var(--accent); }
.news { margin: 0; padding: 0; list-style: none; }
.news li { display: flex; flex-wrap: wrap; gap: .1rem 1.25rem; }
.news time { color: var(--muted); font-variant-numeric: tabular-nums; }

/* company */
.page-title { font-size: clamp(1.75rem, 4vw, 2.5rem); font-weight: 800; padding-block: clamp(1.5rem, 5vw, 3rem) 1.5rem; }
.company-info { margin: 0 0 2rem; max-width: 46rem; }
.company-info .row { display: grid; gap: .2rem 2rem; padding-block: 1rem; border-top: 1px solid var(--border); }
.company-info .row:last-child { border-bottom: 1px solid var(--border); }
@media (min-width: 40rem) { .company-info .row { grid-template-columns: 9rem 1fr; } }
.company-info dt { color: var(--muted); font-weight: 700; }
.company-info dd { margin: 0; }
.company-info ul { margin: 0; padding-left: 1.2em; }
address { font-style: normal; }
.map { max-width: 46rem; aspect-ratio: 4 / 3; border-radius: 1.5rem; overflow: hidden; border: 1px solid var(--border); background: var(--surface); margin-bottom: 3rem; }
.map iframe { width: 100%; height: 100%; border: 0; display: block; }

.site-footer { padding-block: 1.5rem; color: var(--muted); font-size: .875rem; }
.site-footer p { margin: 0; }

@media (prefers-reduced-motion: reduce) {
  .orbit .rings, .orbit .sun { animation: none; }
  .button { transition: none; }
}

.site-header nav { display: flex; gap: .5rem; }

.orbit .rings { transform-origin: 50% 50%; animation: drift 80s linear infinite; }
.orbit .rings circle { fill: none; stroke: var(--ring); stroke-width: 10; }
.orbit .sun { fill: var(--accent); opacity: .9; animation: breathe 6s ease-in-out infinite; transform-origin: 68% 42%; }
.logo { position: absolute; inset: 22%; background: #fff; border-radius: 50%; display: grid; place-items: center; padding: 9%; box-shadow: 0 1.5rem 3rem -1rem rgb(0 0 0 / .55); }
.logo img { width: 100%; height: auto; display: block; }

/* タイポグラフィ: 見出しは RocknRoll One、本文はすっきりした角ゴシック */
body { font-weight: 500; letter-spacing: .02em; }
h1, h2, .brand { font-family: var(--display); font-weight: 400; font-feature-settings: "palt"; }
.hero h1 { letter-spacing: .02em; line-height: 1.2; }
.lead { font-size: 1.0625rem; line-height: 2; }
.section h2, .page-title { letter-spacing: .04em; }
.news time { font-weight: 700; }