/* 穹顶小镇 · dometown.omniworlds.ai — the night over the base by default, warm paper in light mode */

:root {
  --bg: #0b0d14;
  --glow: rgba(110, 160, 255, 0.16);
  --card: rgba(255, 255, 255, 0.045);
  --line: rgba(255, 255, 255, 0.09);
  --text: #eceff6;
  --muted: #a9b0c2;
  --faint: #7f879a;
  --accent: #ffbe78;
  --heading: #ffd8a8;
  --link: #ffd8a8;
  --link-hover: #fff0dc;
  --note: rgba(255, 190, 120, 0.09);
  --note-line: rgba(255, 190, 120, 0.4);
  --stars: 0.9;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f1e8;
    --glow: rgba(255, 170, 90, 0.18);
    --card: #fffdf9;
    --line: rgba(60, 44, 24, 0.12);
    --text: #1d2130;
    --muted: #535b6e;
    --faint: #747b8c;
    --accent: #c4661b;
    --heading: #8f4512;
    --link: #a14d16;
    --link-hover: #6e3210;
    --note: rgba(196, 102, 27, 0.07);
    --note-line: rgba(196, 102, 27, 0.4);
    --stars: 0;
    color-scheme: light;
  }
}

:lang(zh-Hans) { --font: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", system-ui, sans-serif; }
:lang(zh-Hant) { --font: "PingFang TC", "Noto Sans TC", "Source Han Sans TC", "Microsoft JhengHei", system-ui, sans-serif; }
:lang(ja) { --font: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Source Han Sans JP", "Yu Gothic", Meiryo, system-ui, sans-serif; }
/* the language links are each in their own language, with its own fonts */
[lang] { font-family: var(--font); }
/* Japanese lines break between phrases where the browser can (Chrome) */
:lang(ja) h1, :lang(ja) h2, :lang(ja) h3, :lang(ja) .hero p { word-break: auto-phrase; }

*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--text);
  background:
    radial-gradient(120% 60% at 50% -10%, var(--glow), transparent 60%),
    var(--bg);
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
  padding-bottom: env(safe-area-inset-bottom, 0px);
  position: relative;
}
body:lang(en) { line-height: 1.6; }

/* a few stars, only at night */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: var(--stars);
  background-image:
    radial-gradient(1px 1px at 12% 18%, rgba(255, 255, 255, 0.7), transparent 60%),
    radial-gradient(1px 1px at 27% 64%, rgba(255, 255, 255, 0.45), transparent 60%),
    radial-gradient(1.5px 1.5px at 44% 12%, rgba(255, 255, 255, 0.6), transparent 60%),
    radial-gradient(1px 1px at 63% 38%, rgba(255, 255, 255, 0.5), transparent 60%),
    radial-gradient(1px 1px at 78% 22%, rgba(255, 255, 255, 0.7), transparent 60%),
    radial-gradient(1.5px 1.5px at 88% 70%, rgba(255, 255, 255, 0.4), transparent 60%),
    radial-gradient(1px 1px at 8% 84%, rgba(255, 255, 255, 0.5), transparent 60%),
    radial-gradient(1px 1px at 52% 88%, rgba(255, 255, 255, 0.35), transparent 60%),
    radial-gradient(1px 1px at 95% 46%, rgba(255, 255, 255, 0.55), transparent 60%),
    radial-gradient(1px 1px at 35% 32%, rgba(255, 255, 255, 0.3), transparent 60%);
  z-index: -1;
}

a { color: var(--link); text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:hover { color: var(--link-hover); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

.skip {
  position: absolute;
  left: 16px;
  top: -60px;
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--accent);
  color: #1d1306;
  font-weight: 700;
  text-decoration: none;
  z-index: 10;
}
.skip:focus { top: calc(12px + env(safe-area-inset-top, 0px)); }

/* the top bar */
.top {
  max-width: 46rem;
  margin: 0 auto;
  padding-top: calc(14px + env(safe-area-inset-top, 0px));
  padding-bottom: 14px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 18px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  font-family: ui-rounded, "SF Pro Rounded", var(--font);
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: 0.02em;
}
.brand img { border-radius: 22.5%; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.25); }
.langs { display: flex; flex-wrap: wrap; gap: 4px; }
.langs a {
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid transparent;
}
.langs a:hover { color: var(--text); background: var(--card); }
.langs a[aria-current] { color: var(--text); border-color: var(--line); background: var(--card); font-weight: 600; }

/* the page */
main { max-width: 46rem; margin: 0 auto; }
.doc { max-width: 42rem; margin: 0 auto; padding: 18px 0 40px; }
.doc h1 {
  font-family: ui-rounded, "SF Pro Rounded", var(--font);
  font-size: clamp(1.8rem, 5vw, 2.3rem);
  line-height: 1.25;
  font-weight: 800;
  margin: 12px 0 6px;
  text-wrap: balance;
}
.doc h2 {
  font-family: ui-rounded, "SF Pro Rounded", var(--font);
  font-size: 1.3rem;
  line-height: 1.4;
  font-weight: 800;
  margin: 2.2em 0 0.5em;
  padding-top: 1.1em;
  border-top: 1px solid var(--line);
  text-wrap: balance;
}
.doc h3 {
  font-size: 1.02rem;
  line-height: 1.5;
  font-weight: 700;
  color: var(--heading);
  margin: 1.6em 0 0.3em;
}
.doc p { margin: 0.6em 0; }
.doc ul { margin: 0.5em 0; padding-left: 1.3em; }
.doc li { margin: 0.35em 0; }
.doc li::marker { color: var(--faint); }
.doc li > ul { margin: 0.3em 0; }
.doc strong { font-weight: 700; }

/* 简单说 / In short */
.doc blockquote {
  margin: 1.4em 0;
  padding: 14px 18px;
  border-radius: 18px;
  background: var(--note);
  border: 1px solid var(--note-line);
}
.doc blockquote p:first-child { margin-top: 0; }
.doc blockquote ul { margin-bottom: 0; }

.draft {
  display: inline-block;
  margin: 6px 0 0;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--heading);
  background: var(--note);
  border: 1px solid var(--note-line);
}

/* the home page */
.hero { text-align: center; padding: 28px 0 8px; }
.hero h1 { font-size: clamp(2.2rem, 8vw, 3rem); margin: 18px 0 4px; letter-spacing: 0.04em; }
.hero p { font-size: 1.15rem; color: var(--muted); max-width: 30rem; margin: 0.4em auto; text-wrap: balance; }
.hero-icon {
  width: 112px;
  height: 112px;
  max-width: 100%;
  border-radius: 22.5%;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.35), 0 0 0 1px var(--line);
}
.hero .soon {
  display: inline-block;
  margin-top: 14px;
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--heading);
  background: var(--note);
  border: 1px solid var(--note-line);
}
.page-home .doc h3 { color: var(--text); margin-top: 1.4em; }
.page-home .doc h3 + p { color: var(--muted); }

/* the bare domain and 404 */
.root { text-align: center; padding: calc(48px + env(safe-area-inset-top, 0px)) 0 32px; }
.root h1 { font-family: ui-rounded, "SF Pro Rounded", var(--font); font-size: 2.6rem; margin: 18px 0 2px; }
.root .choose { color: var(--muted); margin: 0 0 22px; }
.picks {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  max-width: 26rem;
  margin: 0 auto;
}
.pick {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 16px 12px;
  border-radius: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  color: var(--text);
  text-decoration: none;
}
.pick:hover { border-color: var(--note-line); color: var(--text); }
.pick strong { font-family: ui-rounded, "SF Pro Rounded", var(--font); font-size: 1.15rem; }
.pick span { color: var(--muted); font-size: 0.85rem; }
@media (max-width: 360px) { .picks { grid-template-columns: minmax(0, 1fr); } }

/* the foot */
.foot {
  max-width: 46rem;
  margin: 0 auto;
  padding: 22px 0 calc(28px + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid var(--line);
  color: var(--faint);
  font-size: 0.85rem;
  text-align: center;
}
.foot nav { display: flex; flex-wrap: wrap; justify-content: center; gap: 4px 16px; margin-bottom: 8px; }
.foot nav a { color: var(--muted); text-decoration: none; }
.foot nav a:hover, .foot nav a[aria-current] { color: var(--text); }
.foot p { margin: 0; }
.foot p a { color: var(--muted); }

@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; } }
@media print {
  body::before { display: none; }
  .top .langs, .skip { display: none; }
}