/* OmniGame — omnigame.cc */
:root {
  color-scheme: light dark;
  --bg: #0b0d12;
  --bg-soft: #12151d;
  --card: #161a24;
  --line: #242a38;
  --fg: #e8ecf4;
  --fg-dim: #98a2b8;
  --accent: #6d8cff;
  --accent-2: #35d6a4;
  --radius: 14px;
  --maxw: 960px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue",
    "Hiragino Sans", "Noto Sans JP", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #ffffff;
    --bg-soft: #f5f7fb;
    --card: #ffffff;
    --line: #e3e8f0;
    --fg: #131722;
    --fg-dim: #5b6478;
    --accent: #3a5bd9;
    --accent-2: #128a63;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding-inline: 20px;
}

/* ---------- header ---------- */
header.site {
  border-bottom: 1px solid var(--line);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 10;
}
header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-block: 14px;
  flex-wrap: wrap;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
  color: var(--fg);
}
.brand:hover { text-decoration: none; }
.brand .mark {
  width: 28px; height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: grid; place-items: center;
  color: #fff; font-size: 15px; font-weight: 800;
  flex: none;
}
nav.site { display: flex; gap: 20px; flex-wrap: wrap; }
nav.site a { color: var(--fg-dim); font-size: 15px; }
nav.site a:hover, nav.site a[aria-current="page"] { color: var(--fg); }

/* ---------- hero ---------- */
.hero {
  padding-block: 72px 56px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(900px 380px at 15% -10%, color-mix(in srgb, var(--accent) 16%, transparent), transparent),
    var(--bg);
}
.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(30px, 6vw, 46px);
  line-height: 1.15;
  letter-spacing: -0.025em;
}
.hero p.lede {
  margin: 0 0 28px;
  font-size: clamp(16px, 2.6vw, 19px);
  color: var(--fg-dim);
  max-width: 62ch;
}
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-block;
  padding: 11px 20px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 15px;
  border: 1px solid var(--line);
  color: var(--fg);
}
.btn:hover { text-decoration: none; border-color: var(--accent); }
.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn.primary:hover { filter: brightness(1.08); }

/* ---------- sections ---------- */
section { padding-block: 56px; }
section + section { border-top: 1px solid var(--line); }
h2 {
  margin: 0 0 8px;
  font-size: clamp(22px, 3.6vw, 28px);
  letter-spacing: -0.02em;
}
h2 + p.sub { margin: 0 0 28px; color: var(--fg-dim); max-width: 62ch; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 16px;
}
.card {
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: var(--radius);
  padding: 20px;
}
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--fg-dim); font-size: 14.5px; }
.card .tag {
  display: inline-block;
  margin-top: 12px;
  font-size: 12px;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--accent-2);
  border: 1px solid color-mix(in srgb, var(--accent-2) 40%, transparent);
  border-radius: 999px;
  padding: 2px 9px;
}

/* ---------- contact ---------- */
.contact-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.contact-list li {
  display: flex; gap: 10px; flex-wrap: wrap; align-items: baseline;
  border-bottom: 1px dashed var(--line);
  padding-bottom: 10px;
}
.contact-list .what { min-width: 190px; color: var(--fg-dim); font-size: 14.5px; }

/* ---------- legal pages ---------- */
.legal { padding-block: 48px 72px; }
.legal h1 { font-size: clamp(26px, 5vw, 34px); margin: 0 0 6px; letter-spacing: -0.02em; }
.legal .updated { color: var(--fg-dim); font-size: 14px; margin: 0 0 32px; }
.legal h2 { margin: 36px 0 10px; font-size: 20px; }
.legal h3 { margin: 24px 0 8px; font-size: 16.5px; }
.legal p, .legal li { color: var(--fg); font-size: 15.5px; }
.legal ul, .legal ol { padding-left: 22px; }
.legal li { margin-bottom: 6px; }
.legal table {
  width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 14.5px;
}
.legal th, .legal td {
  border: 1px solid var(--line); padding: 9px 11px; text-align: left; vertical-align: top;
}
.legal th { background: var(--bg-soft); font-weight: 600; }
.table-scroll { overflow-x: auto; }
.note {
  border-left: 3px solid var(--accent);
  background: var(--bg-soft);
  padding: 14px 16px;
  border-radius: 0 10px 10px 0;
  margin: 20px 0;
  font-size: 14.5px;
  color: var(--fg-dim);
}
.toc {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 20px;
  background: var(--bg-soft);
  margin-bottom: 28px;
}
.toc ol { margin: 8px 0 0; font-size: 14.5px; }

/* ---------- footer ---------- */
footer.site {
  border-top: 1px solid var(--line);
  padding-block: 32px 48px;
  color: var(--fg-dim);
  font-size: 14px;
}
footer.site .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
footer.site a { color: var(--fg-dim); }
footer.site nav { display: flex; gap: 18px; flex-wrap: wrap; }