:root {
  --bg: #f6f7fb;
  --surface: #ffffff;
  --text: #1b2033;
  --muted: #5a6275;
  --accent: #2f5bea;
  --accent-soft: #e6ecff;
  --ok: #16a36a;
  --stamp: #dc2626;
  --border: #e1e5ef;
  --note-bg: #fff4e5;
  --note-border: #f2cf96;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1220;
    --surface: #181c2e;
    --text: #e8eaf2;
    --muted: #a3aac0;
    --accent: #8ea8ff;
    --accent-soft: #222a4a;
    --ok: #3ccf8e;
    --stamp: #f87171;
    --border: #2a3048;
    --note-bg: #2b2414;
    --note-border: #5c4a22;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.7 -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Apple SD Gothic Neo",
        "PingFang SC", "Noto Sans", "Noto Sans CJK SC", sans-serif;
}
.wrap { max-width: 780px; margin: 0 auto; padding: 24px 16px 64px; }
header.site { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; justify-content: space-between;
  padding-bottom: 16px; border-bottom: 1px solid var(--border); margin-bottom: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.1rem; color: var(--text); text-decoration: none; }
.brand img { border-radius: 8px; }
nav.pages a, nav.langs a { color: var(--muted); text-decoration: none; margin-right: 14px; font-size: .95rem; }
nav.pages a[aria-current="page"], nav.langs a[aria-current="true"] { color: var(--accent); font-weight: 600; }
nav.langs { margin-top: 40px; padding-top: 16px; border-top: 1px solid var(--border); display: flex; flex-wrap: wrap; gap: 4px 0; }
h1 { font-size: 1.9rem; line-height: 1.25; margin: 8px 0 12px; }
h2 { font-size: 1.25rem; margin: 36px 0 8px; }
h3 { font-size: 1.05rem; margin: 22px 0 4px; }
p, li, td { overflow-wrap: anywhere; }
ul, ol { padding-left: 1.3em; }
a { color: var(--accent); }
.lead { font-size: 1.15rem; color: var(--muted); }
.meta { color: var(--muted); font-size: .9rem; }
.note { background: var(--note-bg); border: 1px solid var(--note-border); border-radius: 10px; padding: 12px 16px; margin: 20px 0; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 16px 20px; margin: 12px 0; }
.cta { display: inline-block; background: var(--accent); color: #fff; padding: 10px 20px; border-radius: 999px;
  text-decoration: none; font-weight: 600; margin: 8px 8px 8px 0; }
@media (prefers-color-scheme: dark) { .cta { color: #0f1220; } }
.soon { display: inline-block; color: var(--muted); border: 1px dashed var(--border); padding: 8px 16px; border-radius: 999px; }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; margin: 20px 0; }
.features .card { margin: 0; }
.features .card h3 { margin-top: 0; }
.features .card p { margin: 0; color: var(--muted); }
.steps li { margin: 6px 0; }
table { border-collapse: collapse; width: 100%; font-size: .95rem; display: block; overflow-x: auto; }
th, td { border: 1px solid var(--border); padding: 8px 10px; text-align: left; vertical-align: top; }
th { background: var(--accent-soft); }
footer { color: var(--muted); font-size: .85rem; margin-top: 16px; }